Plastic-coated product detection device and plastic-coated product production line applying same

Abstract

The invention relates to a plastic-coated product detection device and a plastic-coated product production line applying the same, and the device comprises a frame, the frame is provided with a lifting mechanism, the lifting mechanism is connected with a lifting platform, the lifting platform is provided with a detection box, the detection box is internally provided with a conductive medium, and the detection box is connected with a detection circuit through the conductive medium. The detection box is provided with a detection terminal, the detection terminal is electrically connected with the detection circuit, the detection circuit is electrically connected with a power supply and an indicating lamp, the plastic-coated product production line comprises a detection device and a conveying track, the conveying track penetrates through the frame, the conveying track is provided with a hanging rack, and the hanging rack is provided with a plurality of groups of plastic-coated finished products. The number of the plastic dipping finished products corresponds to the number of the detection boxes. When defects such as pinholes, bubbles or cracks appear on a plastic-dipped finished product, a conducting medium enters the defect position to cause resistance change, then alarm reminding is performed through the indicator lamp, the detection time is short, the accuracy is high, the device is suitable for rapid production of an assembly line, and the production efficiency and the product quality can be improved.

Description

Technical Field

[0001] The present application relates to the field of plastic dip detection technology, and in particular to a plastic dip product detection device and a plastic dip product production line using the device. Background Art

[0002] Dip molding is also known as plastic coating, hot dip molding, hot compress plastic coating, etc. It is a plastic coating process. It is a surface treatment technology that forms a uniform plastic coating by dipping the metal frame into molten plastic (such as PE, PVC, etc.). It can improve the durability, corrosion resistance and aesthetics of the product. Dip molding products are widely used in all aspects of production and life, such as dishwasher pull-out baskets, clothes drying racks, tool handle rubber covers, etc.

[0003] Since the pull-out basket needs to work in a high temperature and humid environment, during the plastic dipping production process of the pull-out basket, it is necessary to ensure that the plastic dipping completely covers the product. Once defects such as pinholes, bubbles or cracks appear, it will cause corrosion to the product and affect the product life. Therefore, the finished product needs to be inspected in the last step of the plastic dipping of the pull-out basket.

[0004] At present, the commonly used detection method is the underwater visual method. The underwater visual method refers to applying a detection agent on the stress concentration area of ​​the dip-plastic pull-out basket, such as the grid intersection, welds and other positions. The detection agent is generally vaseline and phenolphthalein filter paper, or a UV tracer is used to detect whether there are pinholes or crack defects on the dip-plastic finished product. However, this detection method can only be used for random inspections, and its detection efficiency is low. The detection process takes 15 to 30 minutes, which is not suitable for the assembly line production of dip-plastic pull-out baskets. Therefore, this application believes that a detection device and a dip-plastic assembly line that can respond quickly and detect accurately should be designed. Summary of the invention

[0005] The present application provides a device for detecting plastic-impregnated products, which has the effects of rapid response and accurate detection.

[0006] The present application provides a device for detecting plastic dipped products using the following technical solution: A device for detecting plastic-dipped products comprises a frame, a lifting mechanism is arranged on the frame, a lifting platform is connected to the lifting mechanism, a detection box is arranged on the lifting platform, a conductive medium is arranged in the detection box and a detection circuit is connected via the conductive medium, a detection terminal is arranged on the detection box and the detection terminal is electrically connected to the detection circuit, and a power supply and an indicator light are electrically connected to the detection circuit.

[0007] Preferably, the lifting mechanism includes a driving motor arranged on the upper part of the frame, the output shaft of the driving motor is drivingly connected to a sprocket, a chain is wound around the sprocket, the chain is drivingly connected to the sprocket, one end of the chain is connected to a lifting plate, and the other end of the chain is connected to the lifting platform.

[0008] Preferably, the sprocket includes a first sprocket and a second sprocket, the first sprocket and the second sprocket are both arranged in pairs, and the first sprocket and the second sprocket are both arranged at two ends of the output shaft of the drive motor, and the chain includes a first chain and a second chain, the first chain is wound around the first sprocket and the two ends of the first chain are respectively connected to the lifting plate and the lifting platform on a side close to the drive motor, and the second chain is wound around the second sprocket and the two ends of the second chain are respectively connected to the lifting plate and the lifting platform on a side away from the drive motor.

[0009] Preferably, a supporting sprocket is provided on a side of the frame away from the driving motor, a middle portion of the second chain is wound around the supporting sprocket and the second chain is drivingly connected to the supporting sprocket.

[0010] Preferably, the side surfaces of the first sprocket, the second sprocket and the supporting sprocket are all provided with supporting bearings.

[0011] Preferably, the lifting plate is a vertically arranged hollow plate-like structure, the lifting plate is slidably arranged on the side of the frame, and the weight of the lifting plate is not less than the sum of the weights of the lifting platform, the detection box and the conductive medium.

[0012] Preferably, an in-position detection mechanism is provided between the lifting plate and the frame.

[0013] Preferably, there are multiple detection boxes and each detection box is provided with the detection terminal and the indicator light, the detection terminal and the indicator light are connected in series, the detection circuit is a resistance detection circuit, and the detection terminals and indicator lights in different detection boxes are connected in parallel.

[0014] Preferably, the detection box is provided with a pair of detection terminals, the detection terminals are located at the lower part of the detection box and intervals are provided between the detection terminals, and the detection box is provided with a water inlet, a water overflow and a water level line.

[0015] The present application also provides a production line for plastic dipping products, comprising the above-mentioned detection device and a conveying track, wherein the conveying track passes through the frame, a hanging rack is arranged on the conveying track and a plurality of groups of plastic dipping products are arranged on the hanging rack, the positions and quantities of the plastic dipping products correspond to the positions and quantities of the detection box, a sensor is arranged at a position corresponding to the detection box on the conveying track and the sensor can detect the position of the hanging rack, and the sensor is electrically connected to the lifting mechanism.

[0016] In summary, the present application includes at least one of the following beneficial technical effects: 1. The present application sets a frame and a lifting mechanism on the frame, and at the same time, a detection box is set on the lifting mechanism, which can be lifted up to detect the finished product when the plastic-dipped product reaches the position. At the same time, a conductive medium is set in the detection box, and the conductive medium is electrically connected to a detection circuit, a power supply and an indicator light. The plastic-dipped product can be powered on for detection through the conductive medium. When defects such as pinholes, bubbles or cracks appear on the plastic-dipped product, the conductive medium will enter the defective part, causing the conductive medium to contact the metal material inside the plastic-dipped product, causing the resistance of the conductive medium to change, and then an alarm is given through the indicator light. The detection time is short and the accuracy is high. It can adapt to the rapid production of the assembly line and can improve production efficiency and product quality.

[0017] 2. A driving motor is arranged on the frame and a sprocket is connected to the output end of the driving motor, and a chain is wound on the sprocket, and two ends of the chain are respectively connected to the lifting plate and the lifting platform, and the sprocket can be driven to rotate by the driving motor, and then the chain can be driven to rotate, so as to realize the lifting and lowering adjustment of the lifting platform, and the structure is compact and convenient to adjust and use; by arranging the sprockets as a first sprocket and a second sprocket, and the first chain and the second chain are respectively connected to the first sprocket and the second sprocket, and the first chain and the second chain are respectively on different sides of the lifting platform, the first chain and the second chain can be driven to rotate at the same time by the driving motor, so as to realize the stable adjustment of the lifting platform, and the lifting effect is good; by arranging a supporting sprocket on the frame, the transmission of the second chain is guaranteed, and by arranging supporting bearings on the sides of the first sprocket, the second sprocket and the supporting sprocket, the stable transmission of the sprocket and the chain is guaranteed.

[0018] 3. By setting the lifting plate as a hollow plate structure, and the weight of the lifting plate is not less than the sum of the weights of the lifting platform, the test box and the conductive medium, it is ensured that the drive motor can drive the sprocket and the chain to rotate, and ensure the lifting and lowering. At the same time, the weight of the lifting plate can be adjusted according to actual needs to ensure smooth lifting; by setting an in-place detection mechanism on the lifting plate, the lifting position can be detected to ensure that the finished product is completely immersed in the test box, thereby ensuring the detection accuracy.

[0019] 4. By setting up multiple groups of detection boxes and connecting the detection terminals and indicator lights in the multiple groups of detection boxes in parallel, multiple plastic-dipped finished products can be detected at the same time, improving the detection effect and adapting to assembly line operations.

[0020] 5. The present application also provides a production line for dip-molded products, including the above-mentioned detection device, which can be combined with a hanger and a transmission structure to realize rapid detection of dip-molded finished products, thereby effectively improving production efficiency and product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a stereoscopic diagram of the plastic dipping product detection device in the first embodiment of the present application.

[0022] Figure 2 It is a stereoscopic diagram from another perspective of the plastic dipping product detection device in the first embodiment of the present application.

[0023] Figure 3 It is a top view of the plastic dipping product detection device in the first embodiment of the present application.

[0024] Figure 4 It is a schematic diagram of the structure of the detection box in the first embodiment of the present application.

[0025] Figure 5 It is a circuit diagram of the detection circuit in the first embodiment of the present application.

[0026] Figure 6 It is a structural schematic diagram of the plastic dipping line in the second embodiment of the present application.

[0027] Explanation of the accompanying drawings: 1. Frame; 2. Lifting mechanism; 201. Drive motor; 202. Sprocket; 202a. First sprocket; 202b. Second sprocket; 203. Chain; 203a. First chain; 203b. Second chain; 204. Lifting plate; 205. Support sprocket; 206. Support bearing; 3. Lifting platform; 4. Detection box; 401. Water inlet; 402. Overflow; 403. Water level line; 5. Detection terminal; 6. Power supply; 7. Indicator light; 8. In-place detection mechanism; 9. Conveying track; 901. Hanging rack. DETAILED DESCRIPTION

[0028] The present application is further described in detail below in conjunction with the accompanying drawings.

[0029] Embodiment 1: Reference Figures 1 to 5 A device for detecting a plastic dipped product comprises a frame 1. In this embodiment, the frame 1 is a gantry frame. A lifting mechanism 2 is arranged on the frame 1. A lifting platform 3 is connected to the lifting mechanism 2. A detection box 4 is arranged on the lifting platform 3. A conductive medium is arranged in the detection box 4 and a detection circuit is connected through the conductive medium. In this embodiment, the conductive medium is water. A detection terminal 5 is arranged on the detection box 4 and the detection terminal 5 is electrically connected to the detection circuit. A power supply 6 and an indicator light 7 are electrically connected to the detection circuit.

[0030] Specifically, the power supply 6 in this embodiment is a 24V-150W single-group output closed power supply, the indicator light 7 includes a green qualified indicator light and a red defect indicator light, and the red defect indicator light in this embodiment is also connected to a buzzer; the lifting mechanism 2 includes a driving motor 201 arranged on the upper part of the frame 1, and the output shaft of the driving motor 201 is transmission-connected with a sprocket 202. Specifically, a horizontal plate is arranged on the upper part of the frame 1 in this embodiment, and a driving motor is arranged on the horizontal plate. The driving motor is transmission-connected with a reduction box, and output shafts are arranged at both ends of the reduction box and are connected to sprockets 202 through the ends of the output shafts. A chain 203 is wound around the sprocket 202, and the chain 203 is transmission-connected with the sprocket 202. One end of the chain 203 is connected to a lifting plate 204, and the other end of the chain 203 is connected to the lifting platform 3.

[0031] Reference Figure 2 and Figure 3 The sprocket 202 includes a first sprocket 202a and a second sprocket 202b, and the first sprocket 202a and the second sprocket 202b are both arranged in pairs. The first sprocket 202a and the second sprocket 202b are both arranged at the two ends of the output shaft of the driving motor 201. The chain 203 includes a first chain 203a and a second chain 203b. The first chain 203a is wound around the first sprocket 202a and the two ends of the first chain 203a are respectively connected to the lifting plate 204 and the lifting platform 3 on the side close to the driving motor 201. The second chain 203b is wound around the second sprocket 202b and the two ends of the second chain 203b are respectively connected to the lifting plate 204 and the lifting platform 3 on the side away from the driving motor 201.

[0032] Specifically, in this embodiment, connecting plates corresponding to the first chain 203a and the second chain 203b are arranged at the four corners of the lifting platform 3, which can simultaneously drive the first chain 203a and the second chain 203b to rotate through the driving motor 201, so as to realize the smooth adjustment of the lifting platform 3 and achieve a good lifting effect; a supporting sprocket 205 is arranged on the side of the frame 1 away from the driving motor 201, the middle part of the second chain 203b is wound around the supporting sprocket 205 and the second chain 203b is connected to the supporting sprocket 205 in transmission, and the supporting sprocket 205 can ensure the stable transmission of the second chain 203b, and the first sprocket 202a, the second sprocket 202b and the side of the supporting sprocket 205 are all provided with supporting bearings 206.

[0033] Reference Figure 1 The lifting plate 204 is a vertically arranged hollow plate structure. The lifting plate 204 is slidably arranged on the side of the frame 1. The weight of the lifting plate 204 is not less than the sum of the weights of the lifting platform 3, the detection box 4 and the conductive medium. An in-place detection mechanism 8 is arranged between the lifting plate 204 and the frame 1.

[0034] Specifically, the in-place detection mechanism 8 in this embodiment includes travel switches arranged on both sides of the lifting plate 204. There are two travel switches and they are respectively arranged at different heights of the lifting plate 204. The distance between the two travel switches corresponds to the lifting stroke of the lifting platform 3. The travel switches are vertically arranged on both sides of the lifting plate 204 and the travel switches can be connected to the outer side of the frame 1. The horizontal position of the lifting plate 204 is limited by the travel switches. The frame 1 is provided with a positioning protrusion that can be connected to the travel switch.

[0035] Reference Figures 1 to 5 In this embodiment, there are multiple detection boxes 4 and each detection box 4 is provided with a detection terminal 5 and an indicator light 7, the detection terminal 5 and the indicator light 7 are connected in series, the detection circuit is a resistance detection circuit, the detection terminals 5 and the indicator lights 7 in different detection boxes 4 are connected in parallel, and paired detection terminals 5 are provided in the detection box 4. The detection terminals 5 are located at the lower part of the detection box 4 and intervals are provided between the detection terminals 5. The detection box 4 is provided with a water inlet 401, an overflow port 402 and a water level line 403.

[0036] Embodiment 2: Reference Figure 6 A plastic dipping product production line includes a conveyor track 9 and a detection device of embodiment 1. The conveyor track 9 is arranged through a frame 1. A hanger 901 is arranged on the conveyor track 9 and a plurality of groups of plastic dipping products are arranged on the hanger 901. The positions and quantities of the plastic dipping products correspond to the positions and quantities of the detection box 4. A sensor is arranged at a position corresponding to the detection box 4 on the conveyor track 9 and the sensor can detect the position of the hanger 901. The sensor is electrically connected to the lifting mechanism 2. Specifically, the sensor in this embodiment is an infrared sensor and the sensor is located in the middle of the frame 1 and directly above the detection box 4.

[0037] The implementation principle is as follows: the present application sets a frame 1 and sets a lifting mechanism 2 on the frame 1, and at the same time sets a detection box 4 on the lifting mechanism 2, which can lift the detection box 4 through the lifting mechanism 2, and then put the dip-molded finished product into the conductive medium in the detection box 4, the conductive medium is electrically connected with a detection circuit, a power supply and an indicator light, when defects such as pinholes, bubbles or cracks appear on the dip-molded finished product, the conductive medium will enter the defect, thereby causing the resistance of the conductive medium to change, and an alarm will be given through the indicator light on the detection circuit, and the staff will mark or directly remove the dip-molded finished product in the corresponding detection box 4, with short detection time and high accuracy, and can adapt to the fast production process of the assembly line, effectively improving production efficiency and product quality.

[0038] When the present application is used in conjunction with a plastic dipping line, the conveying track 9 on the plastic dipping line conveys the hanger 901 with the finished plastic dipping product to the detection device, and a sensor electrically connected to the lifting mechanism 2 is provided at a position corresponding to the detection box 4 on the conveying track 9. After the sensor detects that the hanger has arrived, it sends a signal to the lifting mechanism 2, and the driving motor 201 drives the sprocket 202 to rotate through the output shaft of the reduction gearbox. Since a chain 203 is provided on the sprocket and the two ends of the chain 203 are respectively connected to the lifting plate 204 and the lifting platform 3, the lifting plate descends during the rotation and the lifting platform 3 rises, so that the finished plastic dipping product enters the conductive medium in the detection box 4 for detection.

[0039] During the lifting process, since the first sprocket 202a and the second sprocket 202b are provided at both ends of the driving motor 201, the first sprocket 202a and the second sprocket 202b are respectively connected with the first chain 203a and the second chain 203b, one end of the first chain 203a and the second chain 203b are connected to the lifting plate 204, and the other end of the first chain 203a is connected to the proximal end of the lifting platform 3, and the second chain 203b bypasses the supporting sprocket 205 and is connected to the distal end of the lifting platform 3, the first sprocket 202a and the second sprocket 202b rotate in the same direction, driving the first chain 203a and the second chain 203b to rotate synchronously, the proximal end and the distal end of the lifting platform 3 are lifted and lowered at the same time, and the lifting and lowering are smooth, the lifting plate 204 and the lifting platform 3 rise and fall one by one, and the side of the lifting plate 204 is provided with an in-place detection mechanism 8, when the height of the lifting plate 204 drops to a suitable position, the lifting platform 3 rises to the detection position synchronously, at this time the dip-molded finished product completely enters the conductive medium, and the detection begins.

[0040] Since a power supply 6 is provided in the detection circuit, a non-defective plastic-coated finished product is an insulator when it enters the conductive medium, the resistance in the detection circuit will not change, and the indicator light 7 lights up green to indicate that it is qualified; when a plastic-coated finished product with air bubbles, pinholes or cracks enters the detection box 4, the conductive medium and the plastic-coated finished product are connected, the resistance of the detection circuit changes, the indicator light lights up red and the corresponding buzzer alarms; the driving motor 201 rotates forward for a certain period of time (for example, 5 seconds) and then reverses, driving the lifting platform 3 to descend, and after the lifting platform 3 descends to a certain position, the in-place detection mechanism 8 is triggered, the lifting mechanism 2 stops, and then the conveying track 9 continues to operate, and the staff will mark or take out the defective plastic-coated finished product to ensure the quality of the finished product; repeating the above operations can perform defect detection on all finished products of the plastic-coated product production line, and at the same time, the detection efficiency and detection accuracy are high, ensuring the production efficiency and production quality of the plastic-coated finished products.

[0041] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A device for detecting plastic dipped products, characterized in that: The invention comprises a frame (1), wherein a lifting mechanism (2) is arranged on the frame (1), a lifting platform (3) is connected to the lifting mechanism (2), a detection box (4) is arranged on the lifting platform (3), a conductive medium is arranged in the detection box (4) and a detection circuit is connected to the detection box (4), a detection terminal (5) is arranged on the detection box (4) and the detection terminal (5) is electrically connected to the detection circuit, and a power supply (6) and an indicator light (7) are electrically connected to the detection circuit.

2. A plastic dipped product detection device according to claim 1, characterized in that: The lifting mechanism (2) comprises a driving motor (201) arranged on the upper part of the frame (1); a sprocket (202) is drivingly connected to the output shaft of the driving motor (201); a chain (203) is wound around the sprocket (202); the chain (203) is drivingly connected to the sprocket (202); one end of the chain (203) is connected to a lifting plate (204); and the other end of the chain (203) is connected to the lifting platform (3).

3. A plastic dipped product detection device according to claim 2, characterized in that: The sprocket (202) comprises a first sprocket (202a) and a second sprocket (202b), the first sprocket (202a) and the second sprocket (202b) are both arranged in pairs, and the first sprocket (202a) and the second sprocket (202b) are both arranged at two ends of an output shaft of the drive motor (201); the chain (203) comprises a first chain (203a) and a second chain (203b), the first chain (203a) is wound around the first sprocket (202a), and two ends of the first chain (203a) are respectively connected to a side of the lifting plate (204) and the lifting platform (3) close to the drive motor (201); the second chain (203b) is wound around the second sprocket (202b), and two ends of the second chain (203b) are respectively connected to a side of the lifting plate (204) and the lifting platform (3) away from the drive motor (201).

4. A plastic dipped product detection device according to claim 3, characterized in that: A support sprocket (205) is provided on a side of the frame (1) away from the drive motor (201), a middle portion of the second chain (203b) is wound around the support sprocket (205), and the second chain (203b) is transmission-connected to the support sprocket (205).

5. A plastic dipped product detection device according to claim 4, characterized in that: Support bearings (206) are provided on the side surfaces of the first sprocket (202a), the second sprocket (202b) and the support sprocket (205).

6. A plastic dipped product detection device according to claim 2, characterized in that: The lifting plate (204) is a vertically arranged hollow plate-shaped structure, the lifting plate (204) is slidably arranged on the side of the frame (1), and the weight of the lifting plate (204) is not less than the sum of the weights of the lifting platform (3), the detection box (4) and the conductive medium.

7. A plastic dipped product detection device according to claim 2, characterized in that: An in-position detection mechanism (8) is provided between the lifting plate (204) and the frame (1).

8. The device for detecting plastic dipped products according to claim 1, characterized in that: There are a plurality of detection boxes (4), and each detection box (4) is provided with the detection terminal (5) and the indicator light (7), the detection terminal (5) and the indicator light (7) are connected in series, the detection circuit is a resistance detection circuit, and the detection terminals (5) and the indicator lights (7) in different detection boxes (4) are connected in parallel.

9. A plastic dipped product detection device according to claim 8, characterized in that: The detection box (4) is provided with a pair of detection terminals (5), the detection terminals (5) are located at the bottom of the detection box (4) and a gap is provided between the detection terminals (5), and the detection box (4) is provided with a water inlet (401), a water overflow (402) and a water level line (403).

10. A plastic dipping product production line, characterized in that: The invention comprises a conveying track (9) and a detection device according to any one of claims 1 to 9, wherein the conveying track (9) is arranged through the frame (1), a hanging rack (901) is arranged on the conveying track (9), and a plurality of groups of dip-molded finished products are arranged on the hanging rack (901), the positions and quantities of the dip-molded finished products correspond to the positions and quantities of the detection box (4), a sensor is arranged on the conveying track (9) at a position corresponding to the detection box (4), and the sensor can detect the position of the hanging rack (901), and the sensor is electrically connected to the lifting mechanism (2).

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