A quality inspection device for plastic straws

Abstract

The present application relates to the technical field of plastic product production, and presents a quality inspection device for plastic straws. By providing an air supply pipe, an air pressure sensor and a PLC control box, when the two ends of the plastic straw are blocked by a conical plug and the air supply pipe respectively, the air supply pump supplies air to the inside of the air supply pipe. At this time, it can be judged whether there are cracks on the plastic straw according to the indication of the air pressure sensor inside the air supply pipe. By providing an alarm device, when there are cracks on the plastic straw, the alarm device alarms, and the operator can take out the unqualified plastic straw after receiving the alarm warning. By providing a flap device and providing conical plugs on both sides of the flap device, after the flap device is turned over, the operator can still install or remove the plastic straw on its back, making the entire workflow more coherent and further improving work efficiency. The device has a simple structure, low cost, and is suitable for wide application.

Description

Technical Field

[0001] The present application relates to the technical field of plastic product production, and in particular to a quality inspection device for plastic straws. Background Art

[0002] Plastic straws are a widely used product, mainly used as straws for drinks such as milk and milk tea. Plastic straws usually need to be tested before they are packaged and sold. Since broken straws will affect their subsequent use, the testing process is mainly used to detect whether the plastic straws are damaged.

[0003] There are usually two ways to detect plastic straws in the prior art. The first is to use visual inspection. During the inspection, workers hold the straws and bend them to a certain extent to observe whether there are cracks. This detection method is time-consuming and labor-intensive, and requires a large labor cost. In addition, since some cracks are shallow, they cannot be effectively identified by the naked eye. Another way is to use automated equipment for detection, but the equipment is expensive and the equipment cost is too high, so its promotion is limited. Utility Model Content

[0004] In view of the above problems, an embodiment of the present application provides a quality inspection device for plastic straws, which can quickly detect whether there are cracks on the plastic straws, and has a simple structure and low manufacturing cost.

[0005] According to one aspect of the embodiments of the present application, a quality inspection device for plastic straws is provided. The quality inspection device for plastic straws comprises a horizontally arranged workbench, a lifting plate arranged at the bottom of the workbench, and a flap device arranged above the workbench, wherein the lifting plate is provided with a plurality of air supply pipes, the workbench is provided with a through working groove corresponding to the air supply pipe, the top end of the air supply pipe contracts inward to form a socket, an air pressure sensor is arranged in the inner cavity of the air supply pipe, the air pressure sensor is electrically connected to a PLC control box, the PLC control box is electrically connected to an alarm device, the inner cavities of the plurality of air supply pipes are connected to air supply pumps, and a plurality of conical plugs are arranged on both sides of the flap device, and the conical plugs match the air supply pipes.

[0006] In some embodiments, the lifting plate includes a plate body, the air supply pipe is arranged on the top of the plate body, support platforms are respectively arranged on both sides of the bottom of the plate body, and at least one telescopic rod is commonly connected between the top wall of the support platform and the bottom wall of the lifting plate.

[0007] In some embodiments, the flap device includes a flap body and a support plate, the conical plug is arranged on the flap body, there are two support plates and they are arranged at both ends of the working groove, the two ends of the flap body are respectively rotatably connected to the two support plates, one of the support plates is provided with a rotating motor, and the output shaft of the rotating motor is transmission-connected to the central axis of the flap body.

[0008] In some embodiments, the alarm device includes a plurality of signal lights, which are disposed on the workbench and correspond to the plurality of gas supply pipes respectively, and the plurality of signal lights are electrically connected to the PLC control box.

[0009] In some embodiments, the outer diameter of the conical plug is larger than the aperture of the socket.

[0010] In some embodiments, a storage box for storing waste is disposed on one side of the workbench, the top of the storage box is open, the bottom of the storage box is open and a plug plate is disposed at the opening.

[0011] The beneficial effects of the present application are as follows: by providing an air supply pipe, an air pressure sensor and a PLC control box, when the two ends of the plastic straw are blocked by the conical plug and the air supply pipe respectively, the air supply pump supplies air to the inside of the air supply pipe. At this time, it is possible to judge whether there are cracks on the plastic straw based on the indication of the air pressure sensor inside the air supply pipe. By providing an alarm device, when there are cracks on the plastic straw, the alarm device alarms, and the operator can remove the unqualified plastic straw after receiving the alarm warning. By providing a flap device and providing conical plugs on both sides of the flap device, after the flap device is turned over, the operator can still install or remove the plastic straw on its back, making the entire workflow more coherent and further improving work efficiency. The device has a simple structure, low cost, and is suitable for wide application.

[0012] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0014] Figure 1A schematic diagram of the overall structure of a quality inspection device for plastic straws provided in an embodiment of the present application;

[0015] Figure 2 Schematic diagram of the overall cross-sectional structure of a quality inspection device for plastic straws provided in an embodiment of the present application.

[0016] The reference numerals in the specific implementation manner are as follows:

[0017] Quality inspection equipment 100 for plastic straws, workbench 110, working groove 111, lifting plate 120, air supply pipe 121, socket 121a, air pressure sensor 121b, plate body 122, support platform 123, telescopic rod 124, flip device 130, conical plug 131, flip body 132, support plate 133, rotating motor 134, alarm device 140, signal light 141, air supply pump 150, storage box 160, plug plate 161. DETAILED DESCRIPTION

[0018] The following will describe in detail the embodiments of the technical solution of the present application in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only used as examples and cannot be used to limit the scope of protection of the present application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of the present application; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "including" and "having" in the specification and claims of the present application and the above-mentioned description of the drawings and any variations thereof are intended to cover non-exclusive inclusions.

[0019] Specifically, please refer to Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the overall structure of a quality inspection device for plastic straws provided in an embodiment of the present application. Figure 2The overall cross-sectional structure diagram of the quality inspection equipment for plastic straws provided in the embodiment of the present application. The quality inspection equipment 100 for plastic straws includes a horizontally arranged workbench 110, a lifting plate 120 arranged at the bottom of the workbench 110, and a flap device 130 arranged above the workbench 110, wherein the workbench 110 is the main structure, which plays the role of supporting the erection and is also the platform for the operator to operate. The specific shape of the workbench 110 is not limited here, and can be set according to the actual working situation to meet the use requirements. The lifting plate 120 is used to drive the air supply pipe 121 to lift or fall, and the lifting function of the lifting plate 120 can be achieved by matching components such as hydraulic cylinders or cylinders. A plurality of air supply pipes 121 are arranged on the lifting plate 120, and the air supply pipes 121 are used to inflate the inside of the straw after it is connected. The workbench 110 is provided with a through working groove 111 corresponding to the air supply pipe 121. When the lifting plate 120 is lifted, the air supply pipe 121 will be lifted from the working groove 111 to the top working surface of the workbench 110. The top of the air supply pipe 121 shrinks inward to form a socket 121a. The air supply pipe 121 at the socket 121a shrinks gradually, which makes it easy to align and insert the plastic straw into the air supply pipe 121. An air pressure sensor 121b is provided in the inner cavity of the air supply pipe 121. The air pressure sensor 121b is used to detect the air pressure inside the air supply pipe 121. When cracks appear on the plastic straw, the air pressure of the air supply pipe 121 changes greatly when supplying air, while when there are no cracks, the air pressure changes more steadily. According to the above principle, it can be judged whether the plastic straw has cracks by the reading detected by the air pressure sensor 121b. It is also possible to determine whether there are cracks on the corresponding plastic straw by supplying the same volume of air pressure into the air supply pipe 121 and detecting the rate of air pressure relief. The air pressure sensor 121b is electrically connected to a PLC control box, and the PLC control box is electrically connected to an alarm device 140. When the reading on the air pressure sensor 121b in the air supply pipe 121 is abnormal, the air pressure sensor 121b transmits an electrical signal to the PLC control box, and further. The PLC control box controls the corresponding alarm device 140 to alarm. The inner cavities of the multiple air supply pipes 121 are all connected to an air supply pump 150, and the air supply pump 150 is used to supply air to the inside of the air supply pipe 121. Multiple conical plugs 131 are provided on both sides of the flap device 130, and the conical plugs 131 match the air supply pipe 121. The conical plugs 131 are used to connect and fix the plastic straws. The outer diameter of the conical plugs 131 should be slightly larger than the inner diameter of the plastic straws, so that the connection between the two is in an interference fit, thereby increasing the stability during the connection.

[0020] In the embodiment of the present application, during the specific working process, the operator inserts the straws on the assembly line into the conical plug 131 one by one, and then controls the flap device 130 to flip 180 degrees. At this time, the operator continues to insert the plastic straw into the conical plug 131 on the back of the flap device 130. At the same time, the lifting plate 120 drives the air supply pipe 121 to lift upward. After the air supply pipe 121 is lifted to the top of the workbench 110 through the working groove 111, the end of the plastic straw away from the conical plug 131 will be inserted into the air supply pipe. 121a at the top of the air supply pipe 121, the air supply pump 150 supplies air to the plastic straw, and the air pressure sensor 121b detects the internal pressure of the air supply pipe 121. After the detection is completed, the workbench 110 falls, and the operator completes the arrangement of the plastic straws on the back of the flip device 130. The flip device 130 flips again, and the operator removes the plastic straws that have been tested on the top of the flip device 130 and reinserts the plastic straws to be tested. In this cycle, the detection of plastic straws can be completed efficiently. During the operation of the air pressure sensor 121b, if the corresponding air pressure sensor 121b shows an abnormal reading, the PLC controller will alarm, and the operator needs to remove the corresponding plastic straws.

[0021] As can be seen from the above, in the embodiment of the present application, by providing the air supply pipe 121, the air pressure sensor 121b and the PLC control box, when the two ends of the plastic straw are blocked by the conical plug 131 and the air supply pipe 121 respectively, the air supply pump 150 supplies air to the inside of the air supply pipe 121. At this time, it can be judged whether there is a crack on the plastic straw according to the indication of the air pressure sensor 121b inside the air supply pipe 121. By providing the alarm device 140, when there is a crack on the plastic straw, the alarm device 140 alarms, and the operator can take out the unqualified plastic straw after receiving the alarm warning. By providing the flap device 130 and providing the conical plug 131 on both sides of the flap device 130, after the flap device 130 is turned over, the operator can still install or remove the plastic straw on its back, making the whole work process more coherent and further improving the work efficiency. The device has a simple structure, low cost, and is suitable for wide application.

[0022] In some embodiments, the lifting plate 120 includes a plate body 122, an air supply pipe 121 is arranged at the top of the plate body 122, and support platforms 123 are respectively arranged on both sides of the bottom of the plate body 122, and at least one telescopic rod 124 is commonly connected between the top wall of the support platform 123 and the bottom wall of the lifting plate 120. In the embodiment of the present application, a specific setting method of the lifting plate 120 is provided, and the telescopic rod 124 can be an electric telescopic rod 124. Through the above setting, the telescopic rod 124 will drive the plate body 122 to rise during the extension process, and conversely, the telescopic rod 124 will drive the plate body to fall during the retraction process. In this way, the lifting and falling of the lifting plate 120 are realized.

[0023] In some embodiments, the flap device 130 includes a flap body 132 and a support plate 133123, the conical plug 131 is arranged on the flap body 132, there are two support plates 133123 and they are arranged at both ends of the working groove 111, and the two ends of the flap body 132 can be rotatably connected to the two support plates 133123 respectively, one of the support plates 133123 is provided with a rotating motor 134, and the output shaft of the rotating motor 134 is transmission-connected to the central axis of the flap body 132.

[0024] In the embodiment of the present application, the rotating motor 134 may be a servo motor, and the flap body 132 and the support plate 133123 may be connected via a bearing seat. During operation, when flipping is required, the rotating motor 134 drives the flap body 132 to rotate, and the flipping is realized. In the present application, the support plate 133123 is provided to support the flap body 132, thereby fully ensuring the stability of the flap body 132 during operation.

[0025] In some embodiments, the alarm device 140 includes a plurality of signal lights 141, which are arranged on the workbench 110 and correspond to the plurality of air supply pipes 121, respectively, and the plurality of signal lights 141 are electrically connected to the PLC control box. In the embodiment of the present application, through the above arrangement, when the value of the air pressure sensor 121b is abnormal, the PLC control box controls the corresponding signal lights 141 to light up, thereby facilitating the operator to identify defective plastic straws.

[0026] In some embodiments, the outer diameter of the conical plug 131 is larger than the aperture of the socket 121a. In the embodiment of the present application, through the above arrangement, since the outer diameter of the conical plug 131 is larger than the aperture of the socket 121a, the stability of the plastic straw connected to the conical plug 131 is higher than the stability of the plastic straw connected to the air supply pipe 121, thereby avoiding the problem that the plastic straw is separated from the conical plug 131 and connected to the air supply pipe 121 when the lifting plate 120 falls.

[0027] In some embodiments, a storage box 160 for storing waste is provided on one side of the workbench 110. The top of the storage box 160 is open, and the bottom of the storage box 160 is open, and a plug plate 161 is provided at the opening. In the embodiment of the present application, with the above arrangement, the operator can pick out the defective products and put them into the storage box 160 for storage. When the storage box 160 is full, the plug plate 161 is pulled open, and the defective plastic straws in the storage box 160 can be conveniently dropped into the storage cart for transportation.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application is described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A quality inspection device for plastic straws, characterized in that: It comprises a horizontally arranged workbench, a lifting plate arranged at the bottom of the workbench, and a flap device arranged above the workbench; A plurality of air supply pipes are arranged on the lifting plate, a through working groove corresponding to the air supply pipe is opened on the workbench, the top end of the air supply pipe is contracted inward to form a socket, an air pressure sensor is arranged in the inner cavity of the air supply pipe, the air pressure sensor is electrically connected to a PLC control box, the PLC control box is electrically connected to an alarm device, and the inner cavities of the plurality of air supply pipes are all connected to an air supply pump; A plurality of conical plugs are arranged on both sides of the flap device, and the conical plugs match the air supply pipe.

2. The quality inspection device for plastic straws according to claim 1, characterized in that: The lifting plate includes a plate body, the air supply pipe is arranged on the top of the plate body, support platforms are respectively arranged on both sides of the bottom of the plate body, and at least one telescopic rod is commonly connected between the top wall of the support platform and the bottom wall of the lifting plate.

3. The quality inspection device for plastic straws according to claim 1, characterized in that: The flap device includes a flap body and a support plate, the conical plug is arranged on the flap body, there are two support plates and they are arranged at both ends of the working groove, the two ends of the flap body are rotatably connected to the two support plates respectively, one of the support plates is provided with a rotating motor, and the output shaft of the rotating motor is transmission-connected to the central axis of the flap body.

4. The quality inspection device for plastic straws according to claim 1, characterized in that: The alarm device comprises a plurality of signal lights, which are arranged on the workbench and correspond to the plurality of gas supply pipes respectively, and the plurality of signal lights are electrically connected to the PLC control box.

5. The quality inspection device for plastic straws according to claim 1, characterized in that: The outer diameter of the conical plug is larger than the aperture of the socket.

6. The quality inspection device for plastic straws according to any one of claims 1 to 5, characterized in that: A storage box for storing waste is arranged on one side of the workbench. The top of the storage box is open, and the bottom of the storage box is open, and a plug plate is arranged at the opening.

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