Plastic lunch box cover quality inspection equipment

Abstract

The utility model relates to the technical field of plastic meal box production, and proposes a plastic meal box cover quality inspection equipment, including work table, control assembly and detection component. Control assembly includes first mobile part, second mobile part, adsorption stem and pushover part, realizes the space movement of adsorption stem through motor drive screw rod, and gently captures the cover by using negative pressure adsorption principle. Detection component includes bottom plate, placing frame and mounting part, wherein the mounting part is equipped with limit stop, air outlet pipeline and replaceable fixed mould. When the equipment works, the cover on the fixed mould is blown with constant airflow through the air blowing device, and the size compliance and sealing performance are comprehensively judged according to whether the cover is blown away, whether it is fluctuating or slightly convex. The utility model realizes the automatic feeding, positioning and detection integration operation of the plastic meal box cover, and has the advantages of accurate detection, high efficiency, strong adaptability and high automation degree.

Description

Technical Field

[0001] This utility model relates to the field of plastic lunch box production technology, and more specifically, to a quality inspection device for plastic lunch box lids. Background Technology

[0002] Plastic lunch boxes are widely used in the food packaging industry due to their lightweight, low cost, and ease of use. As a crucial component of the lunch box, the lid's sealing performance directly affects the food's freshness and transportation safety. Currently, plastic lunch box lids often suffer from dimensional deviations or incomplete seals during the production process due to mold wear, process fluctuations, and other reasons, seriously impacting product quality.

[0003] Existing box lid quality inspections mostly rely on manual operations, such as visually inspecting the appearance and manually pressing to test the seal. This method is inefficient, labor-intensive, and susceptible to subjective factors, which can easily lead to missed inspections or misjudgments.

[0004] In view of this, this utility model proposes a quality inspection device for plastic lunch box lids. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, this utility model provides a plastic lunch box lid quality inspection device to solve the problem that the existing lid quality inspection relies heavily on manual operation, such as visual inspection of appearance and manual pressing to test sealing. This method is inefficient, labor-intensive, and easily leads to missed inspections or misjudgments due to subjective factors of personnel.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a quality inspection device for plastic lunch box lids, comprising: Workbench; The control component includes a first moving part, a second moving part, an adsorption rod, and a pushing part. The first moving part is fixedly installed on the top of the workbench. The second moving part is connected inside the first moving part and moves horizontally to adsorb the plastic lunch box lid. The adsorption rod is located at the front end of the second moving part, and the pushing part is located at the front end of the second moving part to push the plastic lunch box lid. The detection component includes a base plate, a placement frame, and an installation component. The base plate is fixedly installed on the top of the workbench, and the placement frame is fixedly connected to the top of the base plate for limiting the position of the plastic lunch box lid to be inspected. The installation component is fixedly connected to the top of the base plate for fixing the plastic lunch box lid and performing a sealing test. Through the cooperation of the control component and the detection component, automatic detection and feeding of plastic lunch box lids can be achieved.

[0007] Preferably, the first moving component includes a first fixed housing, a first motor, and a first threaded rod. The first fixed housing is fixedly installed on the top of the workbench, the first motor is fixedly installed on the side of the first fixed housing, one end of the first threaded rod is fixedly connected to the output end of the first motor, and the other end is installed inside the first fixed housing through a bearing.

[0008] Preferably, the second moving component includes a second fixed housing, a second motor, a second threaded rod, and a moving seat. The bottom of the second fixed housing is threadedly connected to the outer surface of the first threaded rod. The second motor is mounted on the top of the second fixed housing. One end of the second threaded rod is fixedly connected to the output end of the second motor, and the other end is mounted inside the second fixed housing via a bearing. The moving seat is threadedly connected to the outer surface of the second threaded rod.

[0009] Preferably, the adsorption rod is fixedly installed inside the movable seat near the front end, and a through hole is provided on the outer surface of the adsorption rod near the bottom end.

[0010] Preferably, the estimating component includes an electric telescopic rod and a push block. The electric telescopic rod is fixedly installed inside the movable seat near the front end, and the push block is fixedly connected to the bottom of the electric telescopic rod.

[0011] Preferably, the installation components include a limiting block, an air outlet pipe, and a fixing mold. The limiting block is fixedly connected to the top of the base plate, the air outlet pipe is installed between the limiting block and the base plate and passes through the base plate and the limiting block, and the fixing mold is sleeved on the outer surface of the limiting block.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This invention, by incorporating control and detection components, achieves precise positioning of the adsorption rod in three-dimensional space through the cooperation of the first and second moving parts. This, combined with the estimating component, enables automatic picking, placing, and positioning of the lid, significantly improving production efficiency and reducing labor costs and intensity. The invention employs an air-blowing sealing test method, analyzing the lid's state under a fixed airflow to comprehensively judge its dimensional compliance and sealing performance. The test results are objective and accurate, effectively avoiding subjective errors inherent in manual inspection. The fixed mold features a replaceable design, allowing for quick adaptation to different models and sizes of plastic lunchbox lids, meeting the needs of flexible production in small batches and for diverse varieties. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the control component and detection component of this utility model; Figure 3 This is a schematic diagram of the moving component and the presumed component of this utility model; Figure 4 This is a schematic diagram of the installation component structure of this utility model.

[0014] [Figure Labels] 1. Workbench; 2. Control components; 21. First moving component; 211. First fixed housing; 212. First motor; 213. First threaded rod; 22. Second moving component; 221. Second fixed housing; 222. Second motor; 223. Second threaded rod; 224. Moving seat; 23. Adsorption rod; 231. Through hole; 24. Pushing component; 241. Electric telescopic rod; 242. Push block; 3. Detection components; 31. Base plate; 32. Placement frame; 33. Mounting components; 331. Limiting block; 332. Air outlet pipe; 333. Fixed mold. Detailed Implementation

[0015] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0016] Example Please see Figure 1 , Figure 2 , Figure 3 as well as Figure 4 The plastic lunchbox lid quality inspection equipment includes: a workbench 1; a control component 2, which includes a first moving part 21, a second moving part 22, an adsorption rod 23, and a pushing part 24. The first moving part 21 is fixedly installed on the top of the workbench 1, the second moving part 22 is connected inside the first moving part 21 and moves horizontally, the adsorption rod 23 is located at the front end of the second moving part 22 and is used to adsorb the plastic lunchbox lid, and the pushing part 24 is located at the front end of the second moving part 22 and is used to push the plastic lunchbox lid; and a detection component 3, which includes a base plate 31, a placement frame 32, and a mounting part 33. The base plate 31 is fixedly installed on the top of the workbench 1, the placement frame 32 is fixedly connected to the top of the base plate 31 and is used to limit the plastic lunchbox lid to be inspected, and the mounting part 33 is fixedly connected to the top of the base plate 31 and is used to fix the plastic lunchbox lid and perform a sealing test. Through the cooperation of the control component 2 and the detection component 3, the automatic detection and feeding of plastic lunchbox lids can be realized.

[0017] Specifically, the first moving component 21 includes a first fixed housing 211, a first motor 212, and a first threaded rod 213. The first fixed housing 211 is fixedly installed on the top of the workbench 1, the first motor 212 is fixedly installed on the side of the first fixed housing 211, and one end of the first threaded rod 213 is fixedly connected to the output end of the first motor 212, while the other end is installed inside the first fixed housing 211 via a bearing. The second moving component 22 includes a second fixed housing 221, a second motor 222, a second threaded rod 223, and a moving base 224. The bottom of the second fixed housing 221 is threadedly connected to the outer surface of the first threaded rod 213. The second motor 222 is installed on the top of the second fixed housing 221. One end of the second threaded rod 223 is fixedly connected to the output end of the second motor 222, and the other end is installed inside the second fixed housing 221 through a bearing. The movable seat 224 is threadedly connected to the outer surface of the second threaded rod 223. The adsorption rod 23 is fixedly installed inside the movable seat 224 near the front end. The adsorption rod 23 has a through hole 231 on its outer surface near the bottom end. The pushing component 24 includes an electric telescopic rod 241 and a push block 242. The electric telescopic rod 241 is fixedly installed inside the movable seat 224 near the front end, and the push block 242 is fixedly connected to the bottom of the electric telescopic rod 241.

[0018] Furthermore, the installation component 33 includes a limiting block 331, an air outlet pipe 332, and a fixing mold 333. The limiting block 331 is fixedly connected to the top of the base plate 31. The air outlet pipe 332 is installed between the limiting block 331 and the base plate 31 and passes through the base plate 31 and the limiting block 331. The fixing mold 333 is sleeved on the outer surface of the limiting block 331.

[0019] In this embodiment, the manufactured plastic lunchbox lids are stacked and placed inside the placement frame 32. The first motor 212 drives the first threaded rod 213 to rotate, causing the second fixed outer shell 221 to move on the outer surface of the first threaded rod 213. Then, the second motor 222 drives the second threaded rod 223 to rotate, causing the moving seat 224 to move on the outer surface of the second threaded rod 223. The moving seat 224 approaches the stacked plastic lunchbox lids, and the suction rod 23 adsorbs the plastic lunchbox lids. An air suction device is connected above the suction rod 23. This device is a conventional air suction device. The through-hole 231, along with the air suction device, draws air from around the suction rod 23 into the suction rod 23. This increases the airflow inside the suction rod 23, thereby reducing the pressure at the bottom of the suction rod 23 and achieving the adsorption of the plastic lunchbox lids. The plastic lunchbox lids are not directly adsorbed by suction because the plastic lunchbox lid material is brittle, and excessive suction can easily damage the plastic lunchbox lids. After the suction rod 23 suctions the plastic lunchbox lid, it is moved above the mounting component 33 by the second moving part 22. The plastic lunchbox lid is then moved to the top of the fixing mold 333. The electric telescopic rod 241 drives the push block 242 to remove the plastic lunchbox lid and fix it to the top of the fixing mold 333. The fixing mold 333 is a replaceable mold, allowing replacement with plastic lunchbox lids of different shapes as needed. After the plastic lunchbox lid is fixed to the top of the fixing mold 333, the end of the air outlet pipe 332 near the base plate 31 is connected... With the air blowing device (an existing device), air at a fixed flow rate is blown into the air outlet pipe 332. The air passes through the air outlet pipe 332 and is blown out from the end of the air outlet pipe 332 near the limit block 331. If the plastic lunch box lid is blown away directly, it means that the lid size is not up to standard. If the plastic lunch box lid does not move but does not undulate, it means that the plastic lunch box lid is damaged and the sealing performance is not up to standard. When the plastic lunch box lid does not move and the surface of the plastic lunch box lid is slightly convex, it means that the plastic lunch box lid size and sealing performance are both up to standard.

[0020] The working process of this utility model is as follows: The completed plastic lunchbox lids are neatly stacked and placed inside the placement frame 32. The first motor 212 is started, driving the first threaded rod 213 to rotate, which in turn moves the second fixed outer shell 221 horizontally along the surface of the first threaded rod 213. Then, the second motor 222 is started, driving the second threaded rod 223 to rotate, which moves the moving seat 224 along the surface of the second threaded rod 223 to a designated position above the stacked lids.

[0021] The lid is adsorbed using the adsorption rod 23. A conventional air suction device is connected to the top of the adsorption rod 23. During the suction process, air around the through hole 231 is drawn into the rod, and the accelerated internal airflow causes a drop in air pressure at the bottom of the adsorption rod 23, thus achieving stable adsorption of the lid. This adsorption method avoids damage to the lid caused by direct strong suction and is suitable for the brittle nature of plastic lids.

[0022] After adsorption is complete, the lid is moved above the mounting component 33 by the second moving component 22 and positioned on top of the fixing mold 333. Subsequently, the electric telescopic rod 241 pushes the push block 242 to move, pushing the lid into the fixing mold 333 to complete the fixation. The fixing mold 333 adopts a replaceable design to accommodate lids of different shapes and sizes.

[0023] After the lid is secured, the air-blowing device connected to the air outlet pipe 332 is activated (a standard device) to introduce air into the pipe at a constant flow rate. The airflow exits from one end of the limit block 331 through the air outlet pipe 332. The quality is judged based on the lid's reaction: if the lid is blown off directly, it indicates that the dimensions are not up to standard; if the lid is not blown off and the surface is smooth, it indicates that there is damage and the sealing performance is not up to standard; if the lid remains still and the surface is slightly raised, it indicates that its dimensions and sealing performance meet the requirements.

[0024] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change. Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other. Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A quality inspection device for plastic lunch box lids, characterized in that, include: Workbench (1); The control component (2) includes a first moving part (21), a second moving part (22), an adsorption rod (23), and a pushing part (24). The first moving part (21) is fixedly installed on the top of the workbench (1). The second moving part (22) is connected inside the first moving part (21) and moves horizontally. The adsorption rod (23) is located at the front end of the second moving part (22) and is used to adsorb the plastic lunch box lid. The pushing part (24) is located at the front end of the second moving part (22) and is used to push the plastic lunch box lid. The detection component (3) includes a base plate (31), a placement frame (32), and an installation component (33). The base plate (31) is fixedly installed on the top of the workbench (1). The placement frame (32) is fixedly connected to the top of the base plate (31) and is used to limit the plastic lunch box lid to be inspected. The installation component (33) is fixedly connected to the top of the base plate (31) and is used to fix the plastic lunch box lid and perform a sealing test. Through the cooperation of the control component (2) and the detection component (3), the automatic detection and feeding of the plastic lunch box lid can be realized.

2. The quality inspection equipment for plastic lunch box lids according to claim 1, characterized in that, The first moving component (21) includes a first fixed housing (211), a first motor (212), and a first threaded rod (213). The first fixed housing (211) is fixedly installed on the top of the workbench (1). The first motor (212) is fixedly installed on the side of the first fixed housing (211). One end of the first threaded rod (213) is fixedly connected to the output end of the first motor (212), and the other end is installed inside the first fixed housing (211) through a bearing.

3. The quality inspection equipment for plastic lunch box lids according to claim 2, characterized in that, The second moving component (22) includes a second fixed housing (221), a second motor (222), a second threaded rod (223), and a moving seat (224). The bottom of the second fixed housing (221) is threadedly connected to the outer surface of the first threaded rod (213). The second motor (222) is mounted on the top of the second fixed housing (221). One end of the second threaded rod (223) is fixedly connected to the output end of the second motor (222), and the other end is mounted inside the second fixed housing (221) through a bearing. The moving seat (224) is threadedly connected to the outer surface of the second threaded rod (223).

4. The plastic lunch box cover quality inspection equipment according to claim 3, characterized in that, The adsorption rod (23) is fixedly installed inside the movable base (224) near the front end, and a through hole (231) is opened on the outer surface of the adsorption rod (23) near the bottom end.

5. The plastic lunch box cover quality inspection equipment according to claim 3, characterized in that, The estimating component (24) includes an electric telescopic rod (241) and a push block (242). The electric telescopic rod (241) is fixedly installed inside the movable seat (224) near the front end, and the push block (242) is fixedly connected to the bottom of the electric telescopic rod (241).

6. The plastic lunch box cover quality inspection equipment according to claim 1, characterized in that, The installation component (33) includes a limiting block (331), an air outlet pipe (332), and a fixing mold (333). The limiting block (331) is fixedly connected to the top of the base plate (31). The air outlet pipe (332) is installed between the limiting block (331) and the base plate (31) and passes through the base plate (31) and the limiting block (331). The fixing mold (333) is sleeved on the outer surface of the limiting block (331).

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