Detection and rejection device for external forms of product packages

Abstract

The utility model discloses a product package external form detecting and removing device, and belongs to the technical field of product package detection. The device comprises a conveying mechanism, a lever, a mounting support, an upper photoelectric sensor, a lower photoelectric sensor and a removing device, the mounting support is fixedly mounted on one side of the conveying mechanism, the lever is rotatably mounted on the mounting support and located above the conveying mechanism, the upper photoelectric sensor is fixedly mounted above the mounting support, and the lower photoelectric sensor is located above the lower photoelectric sensor. The upper photoelectric sensor detects position signals of the lever, the lower photoelectric sensor is fixedly installed on the conveying mechanism on the rear side of the upper photoelectric sensor, the lower photoelectric sensor detects position signals of products, and the removing device is installed on the conveying mechanism on the front side of the lever. The device can quickly and effectively detect whether a to-be-detected part exists on a product package or not and improve the product quality and the production efficiency, is wide in application range, small in investment and large in benefit, is suitable for detecting the appearance package of various products which can be in direct contact, and has relatively high universality.

Description

Technical Field

[0001] The utility model relates to a detection and rejection device for the external form of product packaging, belonging to the technical field of product packaging detection. Background Art

[0002] Product packaging quality control is an important part of product production. Product packaging not only wraps the main product, but also includes additional products, such as placing a set of spoons or forks on the top of the boxed food. However, the existing product packaging detection system cannot quickly and effectively detect whether there are spoons or forks on the product packaging, resulting in the untimely removal of defective products, affecting the quality and production efficiency of the product. At present, traditional detection methods mainly rely on manual detection or simple photoelectric detection, but this method is inefficient, prone to errors, and requires high skills from the inspectors. At the same time, although there are related visual inspection devices that can realize packaging appearance inspection and the removal of defective products, the visual inspection device cannot detect opaque products and the manufacturing cost is too high. It is not suitable for some usage environments and has high limitations in usage scenarios.

[0003] Therefore, there is an urgent need for a device for detecting components to be detected on product packaging to solve the above technical problems. Utility Model Content

[0004] The purpose of the research and development of the utility model is to solve the problem of being able to quickly and effectively detect whether there are components to be detected, i.e., spoons or forks, on the product packaging, and to improve the quality and production efficiency of the product with a small investment. A brief overview of the utility model is given below to provide a basic understanding of certain aspects of the utility model. It should be understood that this overview is not an exhaustive overview of the utility model. It is not intended to determine the key or important parts of the utility model, nor is it intended to limit the scope of the utility model.

[0005] The technical solution of this utility model:

[0006] A device for detecting and rejecting the external form of product packaging comprises a conveying mechanism, a lever, a mounting bracket, an upper photoelectric sensor, a lower photoelectric sensor and a rejecting device, wherein the mounting bracket is fixedly mounted on one side of the conveying mechanism, the lever is rotatably mounted on the mounting bracket, and the lever is located above the conveying mechanism, an upper photoelectric sensor is fixedly mounted above the mounting bracket, the upper photoelectric sensor detects a position signal of the lever, a lower photoelectric sensor is fixedly mounted on the conveying mechanism behind the upper photoelectric sensor, the lower photoelectric sensor detects a position signal of the product, and a rejecting device is mounted on the conveying mechanism in front of the lever.

[0007] Preferably: the rejection device includes a rejection cylinder and a push plate, the conveying mechanism is provided with a rejection channel perpendicular to the transmission direction of the conveying mechanism, the rejection cylinder is fixedly installed on the conveying mechanism located on one side of the rejection channel, and a push plate is installed at the output end of the rejection cylinder, and the extension direction of the rejection cylinder is perpendicular to the transmission direction of the conveying mechanism.

[0008] Preferably, a discharging inclined plate is fixedly installed on the other side of the rejection channel.

[0009] Preferably, a support arm is provided on the mounting bracket, and the middle part of the lever is rotatably mounted on the support arm via a bearing.

[0010] Preferably: the lever comprises a shielding section, a mounting section and a detection section which are arranged in sequence from top to bottom, the upper photoelectric sensor detects a position signal of the shielding section, the mounting section is rotatably mounted on the mounting bracket, and the detection section slides and fits with the product passing below.

[0011] Preferably, an arc-shaped fitting detection plate is provided at the bottom of the detection section, and the arc-shaped fitting detection plate is slidably fitted with the top of the product.

[0012] The utility model has the following beneficial effects:

[0013] 1. The detection accuracy of the utility model is high. Since the photoelectric sensor is used for detection, it can effectively avoid false detection or missed detection caused by human factors and improve the detection accuracy;

[0014] 2. The utility model has a fast detection speed and quick response. It can complete the detection of products in a short time, improve production efficiency, and has a high degree of automation. It can be connected with PLC to achieve automation, reduce the labor intensity of manual detection, and reduce management costs;

[0015] 3. The utility model has a wide range of applications, small investment and large returns, and is suitable for various product appearance and packaging inspection issues that can be directly contacted, and has strong versatility;

[0016] 4. The setting of the rejection cylinder of the utility model can effectively prevent unqualified products from flowing into the next process, thereby ensuring the stability of the production line and product quality;

[0017] 5. The utility model has a simple structure, is easy to operate, fast and accurate, and has better effects. By timely eliminating defective products, the number of unqualified products can be reduced, which can effectively improve product quality and production efficiency, and improve product quality and enterprise economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of a device for detecting and rejecting the external form of product packaging;

[0019] Figure 2 It is a side view of a device for detecting and rejecting the external form of product packaging;

[0020] Figure 3 It is a front view of a device for detecting and rejecting the external form of product packaging;

[0021] Figure 4 It is a usage status diagram of a device for detecting and rejecting the external form of product packaging;

[0022] Figure 5 This is a diagram of the use state of the rejection device of the utility model;

[0023] Figure 6 It is a three-dimensional diagram of the lever of the utility model.

[0024] In the figure: 0-product, 1-transmission mechanism, 2-lever, 3-mounting bracket, 4-upper photoelectric sensor, 5-lower photoelectric sensor, 6-rejection device, 21-shielding section, 22-installation section, 23-detection section, 24-arc-shaped fitting detection plate, 31-support arm, 32-bearing, 61-rejection cylinder, 62-push plate, 63-rejection channel, 64-discharging inclined plate. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is described below by specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0026] The connection mentioned in the present invention is divided into fixed connection and detachable connection. The fixed connection is a non-detachable connection, including but not limited to conventional fixed connection methods such as folding connection, rivet connection, bonding connection and welding connection. The detachable connection includes but is not limited to conventional detachable methods such as threaded connection, snap connection, pin connection and hinge connection. When the specific connection method is not clearly defined, it is assumed that at least one connection method can always be found in the existing connection methods to achieve the function. Those skilled in the art can choose according to their needs. For example: choose welding connection for fixed connection and hinge connection for detachable connection.

[0027] Specific implementation method 1: Combination Figure 1-Figure 6The present embodiment is described. The present embodiment is a device for detecting and rejecting the external form of product packaging, comprising a conveying mechanism 1, a lever 2, a mounting bracket 3, an upper photoelectric sensor 4, a lower photoelectric sensor 5 and a rejecting device 6. The mounting bracket 3 is fixedly mounted on one side of the conveying mechanism 1. The lever 2 is rotatably mounted on the mounting bracket 3, and the lever 2 is located above the conveying mechanism 1. An upper photoelectric sensor 4 is fixedly mounted above the mounting bracket 3. The upper photoelectric sensor 4 detects a position signal of the lever 2. The lower photoelectric sensor 5 is fixedly mounted on the conveying mechanism 1 on the rear side of the upper photoelectric sensor 4. The lower photoelectric sensor 5 detects a position signal of the product 0. A rejecting device 6 is installed on the conveying mechanism 1 on the front side of the lever 2. The rejecting device 6 can determine whether a product is qualified and reject defective products. The principle of lever is fully utilized. The triggering accuracy of the photoelectric sensor is amplified by designing components. When the product passes through the designed component, the triggering signal of the photoelectric sensor is affected by the swing of the component, so as to detect whether the product packaging is qualified.

[0028] The rejection device 6 includes a rejection cylinder 61 and a push plate 62. The conveying mechanism 1 is provided with a rejection channel 63 which is perpendicular to the transmission direction of the conveying mechanism 1. The rejection cylinder 61 is fixedly installed on the conveying mechanism 1 on one side of the rejection channel 63. The push plate 62 is installed at the output end of the rejection cylinder 61. The extension direction of the rejection cylinder 61 is perpendicular to the transmission direction of the conveying mechanism 1, so as to reject unqualified products.

[0029] The conveying mechanism 1 is a belt or chain transmission mechanism, and has baffles on the left and right sides of the top, and through holes through which the rejection channel 63 passes are opened on the baffles on both sides.

[0030] A discharging inclined plate 64 is fixedly installed on the other side of the rejection channel 63 to buffer and collect the unqualified products pushed out of the conveying mechanism 1 by the rejection cylinder 61 and the push plate 62.

[0031] The mounting bracket 3 is provided with a support arm 31 , and the middle portion of the lever 2 is rotatably mounted on the support arm 31 via a bearing 32 .

[0032] The lever 2 includes a shielding section 21, a mounting section 22 and a detection section 23 which are arranged in sequence from top to bottom. The upper photoelectric sensor 4 detects the position signal of the shielding section 21, that is, when the product is unqualified and the product has not passed the bottom of the detection section 23, the shielding section 21 always keeps the state of shielding the output signal of the upper photoelectric sensor 4. The mounting section 22 is rotatably mounted on the mounting bracket 3, and the detection section 23 slides and fits with the product 0 passing below. An arc-shaped fitting detection plate 24 is arranged at the bottom of the detection section 23, and the arc-shaped fitting detection plate 24 slides and fits with the top of the product 0, that is, the arc-shaped fitting detection plate 24 always slides and fits with the top of the product 0 passing below. Due to the effect of its own weight, the lever 2 can be reset to its initial position after swinging;

[0033] A more preferred technical solution is that the lever 2 is rotatably mounted on the support arm 31 via a bearing 32, and a return spring is provided at the rotating connection so that the lever 2 can return to the initial position of blocking the upper photoelectric sensor 4 after swinging.

[0034] Specific implementation method 2: Combination Figure 1-Figure 6 This embodiment is described. A method for detecting and rejecting the external form of a product package in this embodiment is implemented based on a device for detecting and rejecting the external form of a product package described in the first embodiment, and includes the following steps:

[0035] Step 1, start the upper photoelectric sensor 4 and the lower photoelectric sensor 5, the top of the lever 2 always covers the upper photoelectric sensor 4, so that the upper photoelectric sensor 4 maintains a detection state with a position signal, and the lower photoelectric sensor 5 maintains a detection state without a position signal;

[0036] Step 2, start the conveying mechanism 1, so that the conveying mechanism 1 drives the product 0 placed on it to move forward. When the product 0 passes the lower photoelectric sensor 5, the lower photoelectric sensor 5 detects a position signal and transmits the signal to the PLC. A delayed detection interval is generated in the logic program of the PLC. In this delayed detection interval, if there are parts to be detected on the product 0, such as accessories such as spoons or forks, the lever 2 swings, causing the upper photoelectric sensor 4 to detect that there is no position signal, and the product 0 is determined to be a qualified product;

[0037] On the contrary, if there is no part to be detected on product 0, lever 2 does not swing, the upper photoelectric sensor 4 detects a position signal, and product 0 is determined to be unqualified;

[0038] Step 3, after the predetermined delay detection interval is completed, product 0 reaches the position of the rejection channel 63. When product 0 is determined to be a qualified product, the rejection cylinder 61 does not operate, and the qualified product 0 is driven to the next process through the conveying mechanism 1. When product 0 is determined to be an unqualified product, the rejection cylinder 61 operates, and the push plate 62 pushes product 0 out of the rejection channel 63.

[0039] It should be noted that in the above embodiments, as long as the technical solutions are not contradictory, they can be arranged and combined, and those skilled in the art can exhaust all possibilities based on the mathematical knowledge of arrangement and combination. Therefore, the present utility model will no longer describe the technical solutions after arrangement and combination one by one, but it should be understood that the technical solutions after arrangement and combination have been disclosed by the present utility model.

[0040] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A device for detecting and rejecting the external form of product packaging, characterized in that: The invention comprises a conveying mechanism (1), a lever (2), a mounting bracket (3), an upper photoelectric sensor (4), a lower photoelectric sensor (5) and a rejection device (6), wherein the mounting bracket (3) is fixedly mounted on one side of the conveying mechanism (1), the lever (2) is rotatably mounted on the mounting bracket (3), and the lever (2) is located above the conveying mechanism (1), an upper photoelectric sensor (4) is fixedly mounted above the mounting bracket (3), and the upper photoelectric sensor (4) detects a position signal of the lever (2), the lower photoelectric sensor (5) is fixedly mounted on the conveying mechanism (1) at the rear side of the upper photoelectric sensor (4), and the lower photoelectric sensor (5) detects a position signal of the product (0), and the rejection device (6) is mounted on the conveying mechanism (1) at the front side of the lever (2).

2. The device for detecting and rejecting the external form of product packaging according to claim 1, characterized in that: The rejecting device (6) comprises a rejecting cylinder (61) and a push plate (62); the conveying mechanism (1) is provided with a rejecting channel (63) perpendicular to the conveying direction of the conveying mechanism (1); the rejecting cylinder (61) is fixedly mounted on the conveying mechanism (1) at one side of the rejecting channel (63); the push plate (62) is mounted at the output end of the rejecting cylinder (61); and the telescopic direction of the rejecting cylinder (61) is perpendicular to the conveying direction of the conveying mechanism (1).

3. The device for detecting and rejecting the external form of product packaging according to claim 2, characterized in that: A discharging inclined plate (64) is fixedly mounted on the other side of the rejection channel (63).

4. The device for detecting and rejecting the external form of product packaging according to claim 1, characterized in that: The mounting bracket (3) is provided with a support arm (31), and the middle part of the lever (2) is rotatably mounted on the support arm (31) via a bearing (32).

5. The device for detecting and rejecting the external form of product packaging according to claim 1, characterized in that: The lever (2) comprises a shielding section (21), a mounting section (22) and a detection section (23) which are arranged in sequence from top to bottom; an upper photoelectric sensor (4) detects a position signal of the shielding section (21); the mounting section (22) is rotatably mounted on a mounting bracket (3); and the detection section (23) is slidably fitted with a product (0) passing below.

6. The device for detecting and rejecting the external form of product packaging according to claim 5, characterized in that: An arc-shaped fitting detection plate (24) is provided at the bottom of the detection section (23), and the arc-shaped fitting detection plate (24) is slidably fitted with the top of the product (0).

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