Surface defect detection device for plywood

Abstract

The utility model relates to the technical field of plywood production, and discloses a plywood surface defect detection device which comprises a plate conveying mechanism, a defect detection mechanism is arranged on the plate conveying mechanism, and a sorting mechanism used for sorting qualified products and unqualified products is arranged at the sending-out end of the plate conveying mechanism. The classification mechanism comprises a front turnover conveyor, a rear turnover conveyor and a double-layer conveyor arranged between the front turnover conveyor and the rear turnover conveyor, the upper layer is an unqualified product conveyor, and the lower layer is a qualified product conveyor; the front turnover conveyor and the rear turnover conveyor can rotate to be connected with the qualified product conveyor and the unqualified product conveyor respectively, a waste product frame is arranged on one side of the unqualified product conveyor, and a material pushing mechanism for pushing waste products out of the unqualified product conveyor is arranged on the other side of the unqualified product conveyor. According to the device, qualified products and unqualified products can be classified conveniently, the unqualified products can be continuously conveyed to the next stage for operation after being confirmed and repaired, and waste products which cannot be repaired are collected on the waste product frame.

Description

Technical Field

[0001] The utility model relates to the technical field of plywood production, and particularly relates to a surface defect detection device for plywood. Background Art

[0002] When producing plywood, it is necessary to detect the defects on its surface. The detection can be carried out by manual visual inspection or defect detection equipment. Manual detection has low efficiency over a long time, while defect detection can automatically detect, which greatly solves the problem of detection efficiency. The existing defect detection devices can perform single-sided detection or detect both sides by setting a flipping mechanism. For example, a Chinese invention patent with the patent publication number CN 107831175 A discloses a double-sided detection device for surface defects of plates and its detection method. By setting a turning plate device, the plate is turned over to detect both sides of the plate. However, after the existing device finishes detection, it is not convenient to classify the qualified products and unqualified products. Summary of the Utility Model

[0003] The purpose of the utility model is to solve the above problems and provide a surface defect detection device for plywood, which is convenient for classifying qualified products and unqualified products.

[0004] To achieve the above purpose, the technical scheme adopted by the utility model is as follows: A surface defect detection device for plywood includes a plate conveying mechanism, a defect detection mechanism is arranged on the plate conveying mechanism, a classification mechanism for classifying qualified products and unqualified products is arranged at the sending end of the plate conveying mechanism. The classification mechanism includes a front flipping conveyor, a rear flipping conveyor and a double-layer conveyor arranged between the two. The upper layer is an unqualified product conveyor, and the lower layer is a qualified product conveyor; both the front flipping conveyor and the rear flipping conveyor can rotate to be respectively connected with the qualified product conveyor and the unqualified product conveyor. A waste rack is arranged on one side of the unqualified product conveyor, and a pushing mechanism for pushing the waste products off the unqualified product conveyor is arranged on the other side.

[0005] Further, the front flipping conveyor is installed on a first support, and one end thereof close to the plate conveying mechanism is hinged to the first support. A first lifting cylinder is arranged at the other end of the front flipping conveyor, the first lifting cylinder is hinged to the first support, and the piston end of the first lifting cylinder is hinged to the bottom of the front flipping conveyor.

[0006] Further, the rear flipping conveyor is installed on a second support, and one end thereof far from the plate conveying mechanism is hinged to the second support. A second lifting cylinder is arranged at the other end of the rear flipping conveyor, the second lifting cylinder is hinged to the second support, and the piston end of the second lifting cylinder is hinged to the bottom of the rear flipping conveyor.

[0007] Further, infrared positioning probes are provided at the delivery ends of the sheet conveying mechanism, the qualified product conveyor, and the unqualified product conveyor.

[0008] Further, a lifting mechanism for driving the waste rack to lift is provided outside the double-layer conveyor.

[0009] Further, the pushing mechanism includes a push plate, a lifting air cylinder for driving the push plate to lift, and a lateral walking mechanism for driving the push plate and the lifting air cylinder to move. The lateral walking mechanism is installed on the mounting frame.

[0010] Due to the adoption of the above technical solution, the present utility model has the following beneficial effects:

[0011] In this embodiment of the utility model, by providing a front flipping conveyor, an unqualified product conveyor and a qualified product conveyor arranged in upper and lower layers, and a rear flipping conveyor, both the front flipping conveyor and the rear flipping conveyor can rotate and be respectively connected with the qualified product conveyor and the unqualified product conveyor. Thus, qualified products can be conveyed onto the qualified product conveyor, and unqualified products can be conveyed onto the unqualified product conveyor. And after the unqualified products are reconfirmed and repaired, they can continue to be conveyed for the next-stage operation. If the unqualified products are reconfirmed as waste products, they are pushed out onto the waste rack by the pushing mechanism. This device is convenient for classifying qualified products and unqualified products, and collecting waste products from unqualified products. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic structural view of a surface defect detection device for a plywood of the present utility model;

[0013] Figure 2 is a left-view structural view of the double-layer conveyor of the present utility model;

[0014] In the figure: 1 - sheet conveying mechanism, 2 - defect detection mechanism, 3 - front flipping conveyor, 31 - first bracket, 32 - first lifting cylinder, 4 - qualified product conveyor, 5 - unqualified product conveyor, 6 - rear flipping conveyor, 61 - second bracket, 62 - second lifting cylinder, 7 - waste rack, 8 - lifting mechanism, 9 - pushing mechanism, 91 - push plate, 92 - lifting cylinder, 93 - lateral walking mechanism, 10 - infrared positioning probe. DETAILED DESCRIPTION OF THE EMBODIMENT

[0015] To enable those skilled in the art to better understand the solution of the present utility model, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the specification of the present utility model are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The terms "first", "second", etc. in the specification and claims of the present utility model and the above-mentioned drawings are used to distinguish different objects and not to describe a specific order. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products or devices.

[0016] As mentioned herein, "embodiment" means that a specific feature, structure or characteristic described in connection with the embodiment can be included in at least one embodiment of the present utility model. The phrase appears at various positions in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0017] As Figure 1 shown, a surface defect detection device for plywood includes a sheet conveying mechanism 1, a defect detection mechanism 2 is provided on the sheet conveying mechanism 1, a sorting mechanism for sorting qualified products and unqualified products is provided at the output end of the sheet conveying mechanism 1. The sorting mechanism includes a front flipping conveyor 3, a rear flipping conveyor 6 and a double-layer conveyor disposed therebetween. The upper layer is an unqualified product conveyor 5, and the lower layer is a qualified product conveyor 4; the front flipping conveyor and the rear flipping conveyor can rotate respectively to connect with the qualified product conveyor 4 and the unqualified product conveyor 5. A waste rack 7 is provided on one side of the unqualified product conveyor 5, and a pushing mechanism 9 for pushing the waste from the unqualified product conveyor 5 is provided on the other side.

[0018] The front turnover conveyor 3 is installed on the first support 31, and one end of it close to the sheet conveying mechanism 1 is hinged to the first support 31. A first lifting cylinder 32 is provided at the other end of the front turnover conveyor 3. The first lifting cylinder 32 is hinged to the first support 31, and the piston end of the first lifting cylinder 32 is hinged to the bottom of the front turnover conveyor 3. Through the telescopic movement of the first lifting cylinder 32, the front turnover conveyor 3 can be rotated around the hinge point, so as to be respectively connected with the qualified product conveyor 4 and the unqualified product conveyor 5, facilitating the conveyance of qualified products to the qualified product conveyor 4 and unqualified products to the unqualified product conveyor 5 for effective classification.

[0019] The rear turnover conveyor 6 is installed on the second support 61, and one end of it far from the sheet conveying mechanism 1 is hinged to the second support 61. A second lifting cylinder 62 is provided at the other end of the rear turnover conveyor 6. The second lifting cylinder 62 is hinged to the second support 61, and the piston end of the second lifting cylinder 62 is hinged to the bottom of the rear turnover conveyor 6. Through the telescopic movement of the second lifting cylinder 62, the rear turnover conveyor 6 can be rotated around the hinge point, so as to be respectively connected with the qualified product conveyor 4 and the unqualified product conveyor 5, facilitating the continuous forward conveyance of qualified products, while the unqualified products can be continuously conveyed forward after being reconfirmed or repaired by workers.

[0020] Infrared positioning probes 10 are provided at the delivery ends of the sheet conveying mechanism 1, the qualified product conveyor 4, and the unqualified product conveyor 5. The infrared positioning probes 10 are used to detect the conveying position of the sheet.

[0021] See Figure 2 , a lifting mechanism 8 for driving the waste rack 7 to lift is provided outside the double-layer conveyor. The lifting mechanism 8 adopts a screw rod mechanism, and the screw rod mechanism belongs to the prior art and will not be elaborated here. By setting the lifting mechanism 8 to adjust the height of the waste rack 7, it is convenient for waste stacking.

[0022] See Figure 2 , the pushing mechanism 9 includes a push plate 91, a lifting cylinder 92 for driving the push plate 91 to lift, and a lateral walking mechanism 93 for driving the push plate 91 and the lifting cylinder 92 to move. The lateral walking mechanism 93 is installed on the mounting frame. The lateral walking mechanism 93 adopts a screw rod mechanism, and the screw rod mechanism belongs to the prior art and will not be elaborated here.

[0023] During use, the sheet is placed on the sheet conveying mechanism 1 and detected by the defect detection mechanism 2. When a qualified product is detected, neither the first lifting cylinder 32 nor the second lifting cylinder 62 operates, and the front turning conveyor 3 and the rear turning conveyor 6 are both connected to the qualified product conveyor 4, and the qualified product is conveyed forward. When an unqualified product is detected, when the unqualified product is conveyed to the delivery end of the sheet conveying mechanism 1 and the infrared positioning probe 10 detects the sheet, the first lifting cylinder 32 operates to make the front turning conveyor 3 rotate to an upward inclined state and connect to the unqualified product conveyor 5, so that the unqualified product is conveyed onto the unqualified product conveyor 5. When the infrared positioning probe 10 on the unqualified product conveyor 5 detects the sheet, the conveying stops, the first lifting cylinder 32 contracts and returns to the horizontal state, and continues to operate according to the detection result of the defect detection mechanism 2.

[0024] After the unqualified products on the unqualified product conveyor 5 are rechecked and confirmed by the worker, if they need to be scrapped, the pushing mechanism 9 operates. Driven by the lateral walking mechanism 93, the push plate 91 is driven to push out the waste products. After the waste products are pushed out, the lifting cylinder 92 contracts, and then the lateral walking mechanism 93 drives the push plate 91 to reset. If the unqualified products can continue to be used after being confirmed and repaired, the worker starts the second lifting cylinder 62 to make the rear turning conveyor 6 in a downward inclined state, and the unqualified product conveyor 5 continues to convey the repaired products forward. This device facilitates the classification of qualified and unqualified products, and facilitates the continued conveyance of the unqualified products to the next stage after repair. The waste products that cannot be repaired are collected on the waste rack 7.

[0025] The above has generally described the present utility model in detail, but based on the present utility model, some modifications or improvements can be made, which are obvious to those of ordinary skill in the art. Therefore, the modifications or improvements that do not depart from the spirit of the present utility model are within the protection scope of the present utility model.

Claims

1. A surface defect detection device for plywood, comprising a sheet conveying mechanism, and a defect detection mechanism is arranged on the sheet conveying mechanism, characterized in that: The delivery end of the sheet conveying mechanism is provided with a sorting mechanism for sorting qualified products and unqualified products. The sorting mechanism includes a front flipping conveyor, a rear flipping conveyor, and a double-layer conveyor disposed between the two. The upper layer is an unqualified product conveyor, and the lower layer is a qualified product conveyor. The front flipping conveyor and the rear flipping conveyor can rotate respectively to connect with the qualified product conveyor and the unqualified product conveyor. A waste rack is arranged on one side of the unqualified product conveyor, and a pushing mechanism for pushing the waste from the unqualified product conveyor is arranged on the other side.

2. The surface defect detection device for a plywood board according to claim 1, characterized in that: The front flipping conveyor is installed on the first bracket, and one end thereof close to the sheet conveying mechanism is hinged to the first bracket. A first lifting cylinder is arranged at the other end of the front flipping conveyor. The first lifting cylinder is hinged to the first bracket, and the piston end of the first lifting cylinder is hinged to the bottom of the front flipping conveyor.

3. The surface defect detection device for plywood according to claim 1, wherein: The rear flipping conveyor is installed on the second bracket, and one end thereof far from the sheet conveying mechanism is hinged to the second bracket. A second lifting cylinder is arranged at the other end of the rear flipping conveyor. The second lifting cylinder is hinged to the second bracket, and the piston end of the second lifting cylinder is hinged to the bottom of the rear flipping conveyor.

4. The surface defect detection device for a plywood according to claim 1, characterized in that: Infrared positioning probes are arranged at the delivery ends of the sheet conveying mechanism, the qualified product conveyor, and the unqualified product conveyor.

5. The surface defect detection device for a plywood board according to claim 1, wherein: A lifting mechanism for driving the waste rack to lift is arranged outside the double-layer conveyor.

6. The surface defect detection device for plywood according to claim 1, characterized in that: The pushing mechanism includes a push plate, a lifting cylinder for driving the push plate to lift, and a lateral walking mechanism for driving the push plate and the lifting cylinder to move. The lateral walking mechanism is installed on the mounting rack.

Images