Assembly line integrating automatic weighing, leak detection and waste discharge

Abstract

The utility model relates to an assembly line integrating automatic weighing, leak detection and waste discharge. The detection device mainly comprises a conveying table, a weighing module, a leak detection module, an eliminating module and the like. Wherein the conveying table is responsible for stably conveying articles to be detected; the weighing module is used for accurately weighing an object to be detected through a telescopic air cylinder and a weighing scale; the leak detection module performs an air tightness test by using a telescopic cylinder, a detection head, an electromagnetic valve and a compressed air tank; and the rejecting module is responsible for automatically rejecting unqualified objects. In addition, the system preferably comprises a blocking module and an unqualified product line which are respectively used for improving the accuracy of the detection position and processing unqualified products. According to the utility model, through a highly automatic process, the production efficiency and the accuracy of product quality detection are obviously improved, and the outflow of products with abnormal quality is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical automation production, in particular to an assembly line integrating automatic weighing, leak detection and waste discharge. Background Art

[0002] With the rapid development of the packaging industry, packaging materials made of plastic materials such as HDPE (high-density polyethylene), PP (polypropylene), and PFA (perfluoroalkoxy resin) through processes such as blow molding and injection molding are widely used. However, in the production process of packaging materials, due to the influence of processes such as molding, molds, and flash removal, weight deviation or potential leakage risks often occur in parts such as the barrel mouth and barrel body. These problems not only affect the quality and safety of products, but may also cause potential economic losses and safety hazards to customers using these packaging materials.

[0003] At present, the common practice in the industry is to conduct hydraulic, airtight and other tests offline according to national standards such as GB18191 and GB13508 by sampling inspection. However, this offline detection method has many deficiencies. First of all, the sampling inspection method cannot ensure that every product is detected, and there is a risk of missed inspection. Secondly, offline detection requires additional time and labor costs, reducing production efficiency. Finally, since the detection environment is separated from the production environment, there may be differences between the detection results and the actual production situation.

[0004] Therefore, how to quickly and accurately solve the problems of weighing and leak detection on the production line is an urgent problem for those skilled in the art to solve. Summary of the Utility Model

[0005] Based on the problems existing in the above-mentioned prior art, the utility model aims to integrate functions such as automatic weighing, leak detection and waste discharge, realize the comprehensive detection of products on the production line, thus preventing the outflow of products with abnormal quality and improving production efficiency and product quality.

[0006] To achieve the above object, the technical solution of the utility model is to design an assembly line integrating automatic weighing, leak detection and waste discharge, including a conveying table, a weighing module, a leak detection module and a rejection module. The conveying table is used to transport the articles to be detected. The weighing module is arranged below the conveying table and is used to detect whether the weight of the articles to be detected meets the requirements. The leak detection module is arranged above the conveying table and is used to detect whether the airtightness of the articles to be detected is qualified. The rejection module is arranged on the horizontal side of the conveying table and is used to reject the unqualified articles to be detected.

[0007] Further, the weighing module includes a weighing scale and a first telescopic cylinder. The weighing scale is arranged on the extending section of the first telescopic cylinder. When weighing, the first telescopic cylinder extends to lift the weighing scale under the item to be detected for weighing the item to be detected, and then the first telescopic cylinder drives the weighing scale to retract to complete the weighing detection.

[0008] Further, the leak detection module includes a second telescopic cylinder, a detection head, a solenoid valve and a compressed air tank. The detection head is arranged under the second telescopic cylinder, and the other end of the detection head is connected to the compressed air tank. The solenoid valve is arranged between the detection head and the compressed air tank for control. During detection, the second telescopic cylinder drives the detection head to press down. After pressing the item to be detected, the solenoid valve is opened to connect the compressed air tank to ventilate the item to be detected. After pressurizing to the set pressure, the solenoid valve is closed, and it is detected whether the item to be detected has a side leak.

[0009] Further, the rejection module includes a third telescopic cylinder and a push rod. The push rod is arranged at the extending end of the third telescopic cylinder. When an unqualified item to be detected is detected, the third telescopic cylinder extends the push rod to push the unqualified item to be detected away from the conveying table.

[0010] Preferably, the device further includes a blocking module. The blocking module includes a detection photoelectric sensor, a blocking cylinder and a blocking rod. The detection photoelectric sensor is arranged on one side of the conveying table, and the blocking rod is arranged at the extending end of the blocking cylinder. When the detection photoelectric sensor detects the item to be detected, the blocking cylinder extends the blocking rod to block the item to be detected, improving the accuracy of the detection position.

[0011] Preferably, the conveying table is two split synchronous chain plate lines.

[0012] Preferably, the device further includes an unqualified product line, which is vertically arranged on one side of the conveying table. The unqualified products detected will be pushed by the rejection module onto the unqualified product line.

[0013] The advantages and beneficial effects of the present utility model are as follows: A production line integrating automatic weighing, leak detection, and waste discharging provided by the present utility model integrates functions such as weighing, leak detection, and rejection in a single station in the traditional process, significantly reducing the floor area, improving the space utilization rate, and making the production line layout more compact. Operations such as weighing, leak detection, and waste discharging are carried out at the same station, avoiding the transfer process of products between different stations, such as starting, conveying, and stopping, thus greatly reducing the time used for transferring products. This design significantly improves the detection efficiency and reduces the production cycle. Concentrating the three functions in one station reduces control points such as fixtures, stoppers, transplanting, starting and stopping of the conveying line for product positioning, simplifies the production line control logic, and reduces the difficulty and complexity of PLC programming. Brief Description of the Drawings

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0015] Figure 1 It is the front view of the present utility model.

[0016] Figure 2 It is the top view of the utility model.

[0017] Among them, 1 - conveying table, 2 - weighing module, 21 - weighing scale, 22 - first telescopic cylinder, 3 - leak detection module, 31 - second telescopic cylinder, 32 - detection head, 33 - solenoid valve, 34 - compressed air tank, 4 - rejection module, 41 - third telescopic cylinder, 42 - push rod, 5 - blocking module, 51 - detection photoelectric, 52 - blocking cylinder, 53 - blocking rod, 6 - unqualified product line. Detailed Embodiment

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present utility model. In addition, it should be understood that the specific implementation manners described herein are only used to illustrate and explain the present utility model, and are not used to limit the present utility model. In the present utility model, unless otherwise stated, the orientation words such as "upper" and "lower" generally refer to the upper and lower in the actual use or working state of the device, specifically the drawing direction in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0019] As Figure 1 and Figure 2 shown, the present utility model mainly consists of a conveying table 1, a weighing module 2, a leak detection module 3, a rejection module 4, a blocking module 5, and a non-conforming product line 6.

[0020] The conveying table 1 is used to transport the items to be detected. It adopts a design of two split synchronous chain plate lines to ensure the stable and continuous transmission of the items to each station.

[0021] The weighing module 2 is arranged below the conveying table 1 and includes a weighing scale 21 and a first telescopic cylinder 22. The weighing scale 21 is a high-precision weighing device for accurately measuring the weight of the items to be detected. The first telescopic cylinder 22 controls the lifting of the weighing scale 21 so as to place the items to be detected on the weighing scale for measurement when needed.

[0022] The leak detection module 3 is arranged above the conveying table 1 and includes a second telescopic cylinder 31, a detection head 32, a solenoid valve 33, and a compressed air tank 34. The second telescopic cylinder 31 controls the lifting of the detection head 32 to enable it to closely contact the items to be detected. The detection head 32 contacts the items to be detected to form a sealed space for airtightness testing. The solenoid valve 33 controls the flow of compressed air for pressurizing and detecting the airtightness of the items to be detected. The compressed air tank 34 provides compressed air for airtightness testing.

[0023] The rejection module 4 is arranged on the horizontal side of the conveying table 1 and includes a third telescopic cylinder 41 and a push rod 42. The third telescopic cylinder 41 controls the telescopic movement of the push rod 42 to push the non-conforming products off the conveying table 1.

[0024] The blocking module 5 is arranged on the horizontal side of the conveying table 1 and includes a detection photoelectric 51, a blocking cylinder 52 and a blocking rod 53. The detection photoelectric 51 senses the arrival of the item to be detected and triggers the subsequent detection process. The blocking cylinder 52 and the blocking rod 53 work together to fix the item to be detected and ensure its position stability during the detection process.

[0025] The unqualified product line 6 is vertically and horizontally arranged on the other side of the conveying table 1 and is used to receive and store the rejected unqualified products.

[0026] Specific usage steps:

[0027] During use, the item to be detected passes through the conveying table 1, that is, two split synchronous chain plate lines, and is stably conveyed from the flash trimming station to the detection station. When the detection photoelectric 51 senses the item, the chain plate line pauses, the blocking cylinder 52 acts, and the item is fixed by the blocking rod 53.

[0028] Subsequently, the second telescopic cylinder 31 of the leak detection module 3 pushes the detection head 32 downward to make close contact with the item to be detected, and the solenoid valve 33 is opened to pressurize to 30 kPa. After closing the intake solenoid valve, if there is no pressure drop within 6 seconds, it is judged as airtight qualified. If the pressure drops by 0.1 kPa, it is judged as unqualified and recorded in the PLC.

[0029] After the airtightness detection is qualified, the blocking cylinder 52 releases, the first telescopic cylinder 22 of the weighing module 2 acts, raises the weighing scale 21 below the item for weighing detection, reads the gram weight value 1 s after the weighing is stable, conducts weighing detection on the product, and if the detected weight is within ±5 g of the standard gram weight, it is judged as qualified, otherwise it is judged as unqualified.

[0030] After all the detections are completed, according to the judgment result of the PLC, if the item is unqualified, the third telescopic cylinder 41 of the rejection module 4 will push the push rod 42 to push the unqualified product to the unqualified product line 6; if it is qualified, it will continue to be conveyed to the packaging station. The entire process has a high degree of automation and high detection efficiency, effectively ensuring the product quality.

[0031] The above has introduced in detail a production line integrating automatic weighing, leak detection and waste discharge provided by the present utility model. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. An assembly line integrating automatic weighing, leak detection and waste discharge, comprising a conveying platform (1), a weighing module (2), a leak detection module (3) and a rejection module (4), characterized in that: The weighing module (2) is arranged below the conveying platform (1), the leak detection module (3) is arranged above the conveying platform (1), and the rejection module (4) is arranged on the horizontal side of the conveying platform (1).

2. The production line integrating automatic weighing, leak detection and waste discharge according to claim 1 is characterized in that: The weighing module (2) comprises a weighing scale (21) and a first telescopic cylinder (22); the weighing scale (21) is arranged at an extended section of the first telescopic cylinder (22); when weighing, the first telescopic cylinder (22) extends to lift the weighing scale (21) below the inspected object to weigh the inspected object.

3. The production line integrating automatic weighing, leak detection and waste discharge according to claim 2 is characterized in that: The leak detection module (3) comprises a second telescopic cylinder (31), a detection head (32), a solenoid valve (33) and a compressed air tank (34); the detection head (32) is arranged under the second telescopic cylinder (31); the other end of the detection head (32) is connected to the compressed air tank (34); and the solenoid valve (33) is provided between the detection head (32) and the compressed air tank (34) for control.

4. The production line integrating automatic weighing, leak detection and waste discharge according to claim 3 is characterized in that: The rejection module (4) comprises a third telescopic cylinder (41) and a push rod (42), wherein the push rod (42) is arranged at the protruding end of the third telescopic cylinder (41).

5. The production line integrating automatic weighing, leak detection and waste discharge according to claim 4 is characterized in that: The device also includes a non-conforming product line (6), which is vertically arranged on one side of the conveying platform (1), and the non-conforming products detected will be pushed onto the non-conforming product line (6) by the rejection module (4).

6. A production line integrating automatic weighing, leak detection and waste discharge according to any one of claims 1 to 5, characterized in that: The device further comprises a blocking module (5), the blocking module (5) comprising a detection photoelectric device (51), a blocking cylinder (52) and a blocking rod (53), the detection photoelectric device (51) being arranged on one side of the conveying platform (1), the blocking rod (53) being arranged at an extended end of the blocking cylinder (52), and when the detection photoelectric device (51) detects a detected object, the blocking cylinder (52) will extend the blocking rod (53).

7. The production line integrating automatic weighing, leak detection and waste discharge according to claim 6 is characterized in that: The conveying platform (1) is composed of two separate synchronous chain plate lines.

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