A cleaning device for screw parts of plastic screw extruder

Abstract

The present invention relates to the technical field of screw cleaning equipment, and specifically to a cleaning equipment for screw accessories of a plastic screw extruder, comprising a frame, a rotating shaft, a transfer frame, a first cleaning component, a cleaning pool and a detection component. The method of cleaning the surface of the screw by the first cleaning component and then judging whether to continue cleaning by the detection component can improve the cleaning efficiency of the screw, reduce the steps, and reduce the burden on the staff. The transfer frame is cooperated with the movement of the screw, so that the equipment can clean multiple screws and improve the cleaning efficiency of the screw. Through the arrangement of multiple ultrasonic transducers, the screw can be strengthened to clean key parts of the screw according to different degrees of dirt after being detected by the detection component, thereby improving the cleaning effect of the screw. In the area where the cleaning has been completed, the ultrasonic transducer can be directly turned off, so that the cleaning pool can clean the screw more efficiently and with pertinence.

Description

Technical Field

[0001] The invention relates to the technical field of screw cleaning equipment, in particular to a cleaning device for screw accessories of a plastic screw extruder. Background Art

[0002] The extrusion process is to heat the plastic raw material to make it in a viscous flow state. Under the action of the screw pressure, it passes through the extrusion die to become a continuum with a cross-section similar to the shape of the die, and then cools and shapes it. After cutting, plastic products with certain geometric shapes and sizes are obtained. During the extrusion process, the plastic raw material will remain on the surface of the screw and gradually solidify to form a bond. When the screw is heated, the residual raw material bonded to the surface of the screw will form a carbonized agglomerate, which will not only cause the screw to become stuck during operation, but also cause the agglomerate to be wrapped in the molten raw material, affecting the product quality. Therefore, the screw needs to be cleaned regularly to keep the surface of the screw clean, so as to make the extrusion process more reliable and improve product quality.

[0003] Chinese patent CN115889268B discloses an intelligent screw cleaning device, including a feed conveying mechanism, a return conveying mechanism, a first handling mechanism, a second handling mechanism, a feed detection mechanism, a cleaning mechanism and a discharge detection mechanism. This patent uses a first imaging component to photograph the screw, thereby judging the severity of dirt agglomeration at various locations of the screw through the acquired image information, and controls the operating speed of the cleaning drive component according to the judgment result. The higher the severity, the faster the operating speed of the cleaning drive component. The cleaning effect of the cleaning mechanism on the screw is judged according to the image information acquired by the second imaging component. If it is judged that the cleaning effect does not meet expectations, after the feed conveying mechanism conveys the screw to the discharge end, the second imaging component The conveying mechanism conveys the screw to the return material conveying mechanism. Although this method can reduce the burden on the staff, the screw is generally cleaned in batches during production. The collection of image information twice will increase the waiting time for screw cleaning and reduce the efficiency of screw cleaning. Since there will be agglomerates formed after carbonization on the surface of the screw, the cleaning mechanism uses a brush and a grinding disc to clean the screw, which may have the problem of cleaning dead corners. At the same time, this cleaning method may cause a certain degree of wear on the surface of the screw. For this reason, it is necessary to add equipment for detecting the surface size of the screw, which increases the cost of the equipment. At the same time, the equipment requires a large footprint, which will further increase the maintenance cost of the screw. Summary of the invention

[0004] In view of the above problems, a cleaning device for screw accessories of a plastic screw extruder is provided. The present invention improves the cleaning efficiency of the screw, reduces the steps, and reduces the burden on the staff by using a method in which a first cleaning component cleans the surface of the screw and then uses a detection component to determine whether to continue cleaning. The device cooperates with a transfer rack to drive the screw to move, so that the device can clean multiple screws and improve the cleaning efficiency of the screw. Through the provision of multiple ultrasonic transducers, the screw can be cleaned more intensively at key locations on the screw according to different degrees of dirt after being detected by the detection component, thereby improving the cleaning effect of the screw. In the area that has been cleaned, the ultrasonic transducer can be directly turned off, so that the cleaning pool can clean the screw more efficiently and specifically.

[0005] In order to solve the problems of the prior art, the present invention provides a cleaning device for screw accessories of a plastic screw extruder, comprising a frame, a rotating shaft in a horizontal state is arranged in the frame, a transfer frame which can rotate around its axis is arranged on the rotating shaft, a plurality of clamping positions equidistantly arranged around its axis are arranged on the transfer frame, and a clamping assembly for clamping both ends of the screw is arranged on each clamping position; a first cleaning assembly for cleaning the screw is arranged on the top of the frame, the first cleaning assembly comprises a nozzle which can move along the axis of the rotating shaft, and the nozzle is connected to an external water source; a cleaning pool for soaking the screw is arranged at the bottom of the frame; a detection assembly for detecting the state of the screw after cleaning is arranged between the first cleaning assembly and the second cleaning assembly.

[0006] Preferably, a water collecting box capable of collecting water and dirt generated during the screw cleaning process is provided below the first cleaning component, a filter is provided on the water collecting box, and a first pipe connected to an external collecting device is provided at one end of the water collecting box.

[0007] Preferably, rotatable baffles are provided on both sides of the water collecting box.

[0008] Preferably, a plurality of first support frames which can synchronously slide along the height direction of the frame are further provided in the water collecting box, and two rollers for supporting the screw rods are provided at the top ends of the first support frames.

[0009] Preferably, a driving shaft parallel to the rotating shaft is sleeved on the bottom of the plurality of first support frames, and a connecting rod connected to the driving shaft in a transmission manner is disposed on both baffles.

[0010] Preferably, the filter is arranged in an arc-shaped structure, and a spiral rod for driving impurities to move is arranged on the filter of the water collecting box. The spiral rod is rotatably arranged in the water collecting box, and the axis of the spiral rod is parallel to the rotation axis. A dust box is arranged on the end of the water collecting box away from the first pipe, and the dust box is provided with a second pipe connected to an external recovery device.

[0011] Preferably, a first driving assembly for synchronously driving a plurality of first supporting frames is provided at the bottom of the water collecting box.

[0012] Preferably, a plurality of ultrasonic transducers arranged in a rectangular array are provided on the pool wall of the cleaning pool.

[0013] Preferably, two second support frames which can slide synchronously along the height direction of the frame are provided at the bottom of the cleaning pool.

[0014] Preferably, a second driving assembly capable of synchronously driving the two second support frames is provided at the bottom of the cleaning pool.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention, through the setting of the first cleaning component, uses water flow to clean the screw, which can reduce the problem of cleaning dead corners caused by the brush head or the grinding disc when cleaning the screw surface. At the same time, the water flow can be reused and is easy to obtain. At the same time, the water flow cleaning method will not cause the problem of wear on the screw surface, thereby extending the service life of the screw. Therefore, there is no need to add a process for detecting the size of the screw surface, which can improve the cleaning efficiency of the screw.

[0017] 2. The present invention detects the surface of the screw after cleaning through the detection component. By immersing the screw in the cleaning pool, the remaining residues on the surface of the screw can be effectively cleaned. The transfer rack moves the screw so that the equipment can clean multiple screws, thereby improving the cleaning efficiency of the screw. The method of cleaning the surface of the screw with the first cleaning component and then judging whether to continue cleaning with the detection component can improve the cleaning efficiency of the screw, reduce steps, and reduce the burden on the staff.

[0018] 3. The present invention sets up multiple ultrasonic transducers, so that after the detection component is detected, the key parts of the screw can be cleaned intensively according to different degrees of dirtiness, thereby improving the cleaning effect of the screw. In the area that has been cleaned, the ultrasonic transducer can be directly turned off, so that the cleaning pool can clean the screw more efficiently and specifically. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The present invention is a three-dimensional structural schematic diagram of a cleaning device for screw accessories of a plastic screw extruder.

[0020] Figure 2 This is a schematic diagram of the cross-sectional structure of a plastic screw extruder screw parts cleaning device. Figure 1 .

[0021] Figure 3 This is a schematic diagram of the cross-sectional structure of a plastic screw extruder screw parts cleaning device. Figure 2 .

[0022] Figure 4 The present invention is a schematic diagram of the three-dimensional structure inside a frame of a cleaning device for screw parts of a plastic screw extruder.

[0023] Figure 5 The invention is a three-dimensional structural schematic diagram of a transfer rack, a cleaning pool and a water collecting box in a cleaning device for screw parts of a plastic screw extruder.

[0024] Figure 6 This is a partial three-dimensional structure diagram of the frame and cleaning pool in the cleaning equipment for screw parts of a plastic screw extruder. Figure 1 .

[0025] Figure 7 This is a schematic diagram of the three-dimensional structure of the frame, cleaning pool and local parts of the screw parts cleaning equipment of a plastic screw extruder. Figure 2 .

[0026] Figure 8 The present invention is a schematic diagram of the three-dimensional structure of a part of a water collecting box in a cleaning device for screw parts of a plastic screw extruder.

[0027] Fig. 9 yes Figure 8 Enlarged view of point A in the middle.

[0028] Fig.10 The present invention is a side view of a transfer rack and a water collecting box in a cleaning device for screw parts of a plastic screw extruder.

[0029] Fig.11 It is an exploded view of a water collecting box in a cleaning device for screw accessories of a plastic screw extruder.

[0030] The numbers in the figure are:

[0031] 1. Frame; 11. Rotating shaft; 12. Transfer frame; 121. Clamping assembly; 13. First cleaning assembly; 131. Nozzle; 14. Cleaning pool; 141. Ultrasonic transducer; 142. Second supporting frame; 143. Second driving assembly; 1431. Second fixing plate; 1432. Second screw rod; 1433. Second rotating driving motor; 1434. Second driving frame; 1435. Second guide rod; 15. Detection assembly; 2. Water collecting box; 21. Filter; 211, spiral rod; 212, dust box; 213, second pipe; 22, first pipe; 23, baffle; 231, connecting rod; 2311, slide rail; 24, first support frame; 241, roller; 242, drive shaft; 2421, pulley; 25, mounting shaft; 26, slide groove; 27, first drive assembly; 271, first fixed frame; 272, first screw rod; 273, first rotary drive motor; 274, first drive frame; 275, first guide rod. DETAILED DESCRIPTION

[0032] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0033] like Figures 1 to 6 As shown: A cleaning device for screw accessories of a plastic screw extruder comprises a frame 1, a rotating shaft 11 in a horizontal state is arranged in the frame 1, a transfer frame 12 which can rotate around its axis is arranged on the rotating shaft 11, a plurality of clamping positions equidistantly arranged around its axis are arranged on the transfer frame 12, and a clamping assembly 121 for clamping both ends of the screw is arranged on each clamping position; a first cleaning assembly 13 for cleaning the screw is arranged on the top of the frame 1, the first cleaning assembly 13 comprises a nozzle 131 which can move along the axis of the rotating shaft 11, and the nozzle 131 is connected to an external water source; a cleaning pool 14 for soaking the screw is arranged at the bottom of the frame 1; a detection assembly 15 for detecting the state of the screw after cleaning is arranged between the first cleaning assembly 13 and the second cleaning assembly.

[0034] First, the screw to be cleaned is placed on the clamping assembly 121 of the transfer rack 12. At this time, the rotation of the rotating shaft 11 drives the clamping assembly 121 to rotate, and the clamping assembly 121 drives the screw to rotate around the axis of the rotating shaft 11. The screw will first move to the first cleaning assembly 13 under the drive of the transfer rack 12, and the nozzle 131 of the first cleaning assembly 13 slides along the axis of the rotating shaft 11, so that the nozzle 131 can spray the external water source on the screw through high pressure, thereby cleaning the adhesive and dirt on the surface of the screw. Through the setting of the first cleaning assembly 13, the method of cleaning the screw with water flow can reduce the problem of cleaning dead corners caused by brush heads or grinding discs when cleaning the screw surface. At the same time, the water flow can be reused and is easy to obtain. At the same time, the water flow cleaning method will not cause the problem of wear on the screw surface, thereby extending the service life of the screw. Therefore, there is no need to increase the process of detecting the size of the screw surface, which can improve the cleaning efficiency of the screw.

[0035] After the cleaning is completed, the transfer rack 12 will drive the screw to continue to move, so that the screw moves to the detection component 15, and the detection component 15 will detect the surface of the screw after cleaning to check whether there are any residues or other marks on the surface. After the detection of the detection component 15 is completed, the transfer rack 12 will continue to rotate to drive the screw to move to the cleaning pool 14. A cleaning liquid for cleaning the remaining residues on the surface of the screw will be provided in the cleaning pool 14. By immersing the screw in the cleaning pool 14, the remaining residues on the surface of the screw can be effectively cleaned, and because the cleaning liquid can wrap the screw, there will be no cleaning dead corners on the surface of the screw, thereby improving the cleaning efficiency. After the cleaning is completed, the screw will return to its initial position driven by the transfer rack 12;

[0036] Under normal circumstances, the screw can be taken out directly at this time. To ensure that the surface cleaning of the screw is completed, the surface of the screw can be rinsed through the first cleaning component 13 by continuing to rotate the transfer rack 12, so that the cleaning liquid will not remain on the surface of the screw, which also helps to improve the cleaning effect. This step can be performed according to whether the cleaning liquid used in the cleaning pool 14 will cause damage to the surface of the screw and whether the surface of the screw is completely cleaned. At the same time, the surface of the screw can also be sent to the detection component 15 again through the movement of the transfer rack 12, and the detection component 15 can be used to detect it to determine whether the surface of the screw has been cleaned, thereby determining whether the screw should be cleaned for the second time. In the above manner, the equipment can clean multiple screws and improve the cleaning efficiency of the screw. The method of cleaning the screw surface with the first cleaning component 13 and then determining whether to continue cleaning with the detection component 15 can improve the cleaning efficiency of the screw, reduce steps, and reduce the burden on staff.

[0037] In the prior art, the clamping assembly 121 is generally configured as a fixed part and a movable part, one end of the screw is abutted against the fixed part, and the movable plate abuts against the other end of the screw along the axis of the screw. At the same time, the fixed part and the movable part are generally configured to be rotatably connected to the equipment, so that the screw can avoid cleaning dead corners. There are many such methods in the prior art, which will not be described one by one here; the detection assembly 15 can be configured as a method in the prior art of photographing the surface of the screw by a camera and then making a judgment based on the obtained image, or a piezoelectric sensor can be used to indirectly judge the presence of dirt on the screw by using the strain characteristics of the piezoelectric material to change the vibration of the screw surface, or by using ultrasonic detection technology through sound wave detection to analyze the sound waves reflected from the surface of the screw to judge whether there are pollutants or wear on its surface. There are many such methods in the prior art, which will not be described one by one here.

[0038] like Figures 2 to 4 , Figures 8 to 11 As shown: a water collecting box 2 capable of collecting water and dirt generated during the screw cleaning process is arranged below the first cleaning component 13, a filter screen 21 is arranged on the water collecting box 2, and a first pipe 22 connected to an external collecting device is arranged at one end of the water collecting box 2.

[0039] The water collecting box 2 is fixedly connected to the frame 1 in a horizontal state, and the filter screen 21 is arranged on the top of the water collecting box 2. Through the arrangement of the water collecting box 2, the water flow generated by the first cleaning component 13 after cleaning the screw can be collected, so as to prevent the water flow from entering the cleaning pool 14 and affecting the immersion cleaning effect of the cleaning pool 14 on the screw. At the same time, it can also reduce the interference with the detection component 15, improve the utilization of water resources, and through subsequent filtration, the water flow in the first cleaning component 13 can be repeatedly used, reducing the waste of water resources, and also reducing the maintenance of the screw. The cost expenditure can be reduced by setting the filter screen 21 to block the impurities on the screw, so that the impurities cleaned from the screw can be collected on the filter screen 21, thereby facilitating the unified recycling of impurities, and also preliminarily filtering the water flow, thereby improving the subsequent filtering efficiency of the water flow. The rotating shaft 11 is a hollow structure, and the first pipe 22 passes through the rotating shaft 11 and is connected to an external collecting device. When there is more water in the water collecting box 2, the water in the water collecting box 2 is pumped away by an external collecting device, so that the equipment can be used continuously.

[0040] like Figures 2 to 4 , Figures 8 to 11 As shown: rotatable baffles 23 are provided on both sides of the water collecting box 2.

[0041] Since the water flow ejected from the nozzle 131 on the first cleaning component 13 is high pressure, the water flow ejected from the screw toward the water collecting box 2 after cleaning may splash to the surrounding side again. By setting the two baffles 23, the effect of water splashing can be reduced through the baffle 23, so that the water flow can flow along the inner wall of the baffle 23 into the water collecting box 2. By setting the baffle 23 to be rotatable, the baffle 23 can be adjusted according to actual conditions, thereby improving the adaptability of the equipment. At the same time, since the space inside the frame 1 is small, the rotation of the baffle 23 can be used to avoid the rotating screw on the conversion frame.

[0042] like Figures 2 to 4 , Figures 8 to 11 As shown, a plurality of first support frames 24 that can synchronously slide along the height direction of the frame 1 are also arranged in the water collecting box 2, and two rollers 241 for supporting the screw are arranged at the top of the first support frame 24.

[0043] Since the screw in the extruder is generally long, when it is clamped on the conversion frame for cleaning, the cleaning time is long. If there is no support under the screw, the screw will be deformed under the dual effects of gravity and water pressure. The bottom of the screw is supported by the first support frame 24, so that the possibility of deformation of the screw can be reduced. However, since the conversion frame drives the screw to rotate around the rotating axis 11, if the first support frame 24 cannot avoid it, it will cause the screw to collide with the first support frame 24 during the rotation of the transfer frame 12. The first support frame 24 slides along the height direction of the frame 1, so that the screw can pass through when transferring. The first support frame 24 moves toward the axial side of the rotating shaft 11 to avoid the screw, so that the equipment can run stably. By setting up multiple first support frames 24, the supporting force of the first support frame 24 on the screw is kept uniform, avoiding the problem of uneven force. By setting a roller 241 on the top of the first support frame 24, the screw can keep rotating during the cleaning process, generally avoiding the generation of cleaning dead corners during the screw cleaning process. After the screw is fixed, it can generally rotate around its axis. The setting of the roller 241 can support the screw while assisting its rotation, avoiding the problem of the screw being unable to rotate and causing the screw to be unable to clean properly.

[0044] like Figures 2 to 4 , Figures 8 to 11 As shown, a driving shaft 242 parallel to the rotating shaft 11 is sleeved on the bottom of the plurality of first support frames 24 , and a connecting rod 231 which is transmission-connected to the driving shaft 242 is disposed on both baffles 23 .

[0045] The top of both sides of the water collecting box 2 is provided with a mounting shaft 25, and the mounting shaft 25 is parallel to the axis of the rotating shaft 11. The bottom of the baffle 23 is sleeved on the mounting shaft 25, and the connecting rod 231 is fixedly connected to the bottom of the baffle 23 to form an L-shaped structure with it. The connecting rods 231 of the two baffles 23 are arranged in a mirror-symmetrical state, and the connecting rod 231 is provided with a slide rail 2311 extending along its length direction. The driving shaft 242 passes through the slide rails 2311 of the two connecting rods 231 and slides with them. A pulley 2421 is provided on the sliding part of the driving shaft 242 and the slide rail 2311. The interior of the water collecting box 2 is provided with a slide groove 26 extending along the height direction of the frame 1, and the driving shaft 242 can be slidably arranged on the slide groove 26. The movement of the first support frame 24 can drive the movement of the driving shaft 242. Through the setting of the driving shaft 242, only one of the first support frames 24 needs to be moved. The two baffles 23 are driven by the first support frame 24, and the two baffles 23 are driven to rotate to the side away from the first support frame 24 by the first support frame 24. The water flow sprayed by the first cleaning machine can be better collected to avoid the splashing of the water flow. The baffles 23 and the first support frame 24 can work synchronously through the same driving source, thereby reducing the overall cost of the equipment.

[0046] like Figures 2 to 4 , Figures 8 to 11 As shown: the filter 21 is arranged in an arc-shaped structure, and a spiral rod 211 for driving impurities to move is arranged on the filter 21 of the water collecting box 2, and the spiral rod 211 is rotatably arranged in the water collecting box 2, and the axis of the spiral rod 211 is parallel to the rotating shaft 11, and a dust collecting box 212 is arranged on the end of the water collecting box 2 away from the first pipe 22, and a second pipe 213 connected to an external recovery device is arranged on the dust collecting box 212.

[0047] By setting the screw rod 211, the rotating screw rod 211 can drive the impurities to move, and by setting the filter 21 in an arc-shaped structure, the filter 21 can use its arc surface to allow the impurities to slide toward the center of the filter 21 under the action of gravity, so that the screw rod 211 drives the impurities to move until the impurities move to the dust box 212, so that the impurities are collected by the dust box 212, and the second pipe 213 passes through the hollow rotating shaft 11 to be connected to the external recovery device, so that the impurities and part of the water in the dust box 212 can be sucked away by the external recovery device, so that the equipment can be used continuously.

[0048] like Figures 2 to 4 , Figures 8 to 11 As shown: a first driving assembly 27 for synchronously driving a plurality of first supporting frames 24 is disposed at the bottom of the water collecting box 2 .

[0049] The first driving assembly 27 includes a first fixed frame 271, a first screw rod 272, a first rotary driving motor 273, a first driving frame 274 and a plurality of first guide rods 275. The first fixed frame 271 is fixedly connected to the bottom of the water collecting box 2. The first screw rod 272 is rotatably arranged between the first fixed frame 271 and the bottom of the water collecting box 2 in a vertical state. The first driving frame 274 is sleeved on the first screw rod 272 and is threadedly matched with the first screw rod 272. The number of the first guide rods 275 is the same as the number of the first supporting frame 24 and corresponds one to one. The first guide rods 275 are fixedly connected to the first driving frame 274 and between the first supporting frame 24 in a vertical state, and the first guide rods 275 pass through the bottom of the water collecting box 2 and are connected to the first supporting frame 24. The first rotation drive motor 273 is fixedly connected to the bottom of the first fixed frame 271 in a sliding manner, and the first screw rod 272 is transmission-connected to the output shaft of the first rotation drive motor 273. By starting the first rotation drive motor 273, the output shaft of the first rotation drive motor 273 drives the first screw rod 272 transmission-connected thereto to rotate, and the rotation of the first screw rod 272 drives the movement of the first drive frame 274 threadedly matched therewith, and the movement of the first drive frame 274 drives the movement of multiple first guide rods 275, and the movement of the first guide rod 275 drives the movement of the first support frame 24, thereby realizing the synchronous sliding of multiple first support frames 24 along the height direction of the frame 1.

[0050] like Figures 2 to 7 As shown, a plurality of ultrasonic transducers 141 arranged in a rectangular shape are arranged on the wall of the cleaning pool 14 .

[0051] By setting up multiple ultrasonic transducers, after the screw is placed in the cleaning pool 14, the electrical signal generated by the ultrasonic generator can be converted into mechanical vibration, and then transmitted to the cleaning liquid in the cleaning pool 14, and a cavitation effect is generated in the liquid through high-frequency sound waves. This effect will form a large number of tiny bubbles in the liquid. These bubbles are quickly formed and burst, generating a strong impact force, which can effectively peel off the attachments on the surface of the screw, thereby playing a cleaning role. The setting of the ultrasonic transducer 141 allows the screw to be cleaned without dead angles. At the same time, since the screw can be cleaned by vibration, it can be directly used The screw is cleaned with a water source without cleaning liquid, thereby reducing the cost expenditure, so that the water used by the first cleaning component 13 to clean the screw can be directly used in the cleaning pool 14 for cleaning the screw after filtering, and the water resources are effectively utilized. Through multiple ultrasonic transducers 141 arranged in a rectangular row, the screw can be strengthened to clean the key parts of the screw according to different degrees of dirt after being detected by the detection component 15, thereby improving the cleaning effect of the screw. In the area that has been cleaned, the ultrasonic transducer 141 can be directly turned off, so that the cleaning of the screw by the cleaning pool 14 is more efficient and targeted.

[0052] like Figures 2 to 7 As shown, two second support frames 142 that can slide synchronously along the height direction of the frame 1 are arranged at the bottom of the cleaning pool 14 .

[0053] When the transfer rack 12 drives the screw into the cleaning pool 14, if the second support rack 142 is not set, when the transfer rack 12 drives the screw to immerse in the cleaning pool 14, the transfer rack 12 and the clamping assembly 121 also need to be immersed in the cleaning pool 14, thereby improving the waterproof performance of the clamping assembly 121 and the transfer rack 12. If cleaning fluid is used in the cleaning pool 14, the cleaning fluid may also remain on the transfer rack 12. If the cleaning fluid has a certain corrosiveness, it may cause damage to the clamping assembly 121 and the transfer rack 12. Through the setting of the second support rack 142 and the lifting of the second support rack 142, the screw on the transfer rack 12 can be placed on the two second support racks 142, and the screw is driven to immerse in the cleaning pool 14 by the downward movement of the second support rack 142, thereby avoiding the cleaning fluid from adhering to the clamping assembly 121 and the transfer rack 12, thereby extending the service life of the clamping assembly 121 and the transfer rack 12 while improving the flexibility of the equipment, so that the equipment can clean and detect the two screws at the same time.

[0054] like Figures 2 to 7 As shown, a second driving assembly 143 capable of synchronously driving two second supporting frames 142 is disposed at the bottom of the cleaning pool 14 .

[0055] The second driving assembly 143 includes a second fixed plate 1431, a second screw rod 1432, a second rotary driving motor 1433 and a second driving frame 1434. The second fixed plate 1431 is fixedly connected to the bottom of the frame 1. The second screw rod 1432 is rotatably arranged between the second fixed plate 1431 and the bottom of the cleaning pool 14 in a vertical state. The second driving frame 1434 is sleeved on the second screw rod 1432 and threadedly cooperates with it. The second driving frame 1434 is located between the two second supporting frames 142 and is fixedly connected to the bottoms of the two. Two second guide rods 1435 are arranged on the second supporting frame 142. The second guide rods 1435 pass through the bottom of the cleaning pool 14 and slide with it. The second rotary driving motor 1 433 is fixedly connected to the bottom of the second fixed plate 1431, and the second screw rod 1432 is transmission-connected to the output shaft of the second rotary drive motor 1433. By starting the second rotary drive motor 1433, the output shaft of the second rotary drive motor 1433 drives the rotation of the second screw rod 1432 transmission-connected thereto, and the rotation of the second screw rod 1432 drives the movement of the second drive frame 1434 threadedly matched therewith, and the movement of the second drive frame 1434 drives the movement of the two second support frames 142, so that the second support frames 142 move on the cleaning pool 14 along the second guide rod 1435, thereby driving the screw rod to move in the cleaning pool 14, so that the screw rod can enter the cleaning pool 14 for cleaning.

[0056] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A cleaning device for screw parts of a plastic screw extruder, comprising a frame (1), characterized in that: A rotating shaft (11) in a horizontal state is arranged in the frame (1), a transfer frame (12) capable of rotating around its axis is arranged on the rotating shaft (11), a plurality of clamping positions equidistantly arranged around its axis are arranged on the transfer frame (12), and each clamping position is provided with a clamping assembly (121) for clamping two ends of a screw rod; A first cleaning assembly (13) for cleaning the screw is arranged on the top of the frame (1), the first cleaning assembly (13) comprising a spray head (131) movable along the axis of the rotating shaft (11), the spray head (131) being connected to an external water source; A cleaning pool (14) capable of soaking the screw is provided at the bottom of the frame (1); A detection component (15) for detecting the state of the screw after cleaning is arranged between the first cleaning component (13) and the second cleaning component; A water collection box (2) capable of collecting water and dirt generated during the screw cleaning process is provided below the first cleaning assembly (13); a filter screen (21) is provided on the water collection box (2); and a first pipe (22) connected to an external collection device is provided at one end of the water collection box (2); Rotatable baffles (23) are provided on both sides of the water collecting box (2); A plurality of first support frames (24) that can synchronously slide along the height direction of the frame (1) are also arranged in the water collection box (2), and two rollers (241) that support the screw rods are arranged at the top of the first support frames (24); A driving shaft (242) parallel to the rotating shaft (11) is sleeved on the bottom of the plurality of first support frames (24), and a connecting rod (231) drivingly connected to the driving shaft (242) is provided on both baffles (23); The filter screen (21) is arranged in an arc-shaped structure. A spiral rod (211) for driving impurities to move is arranged on the filter screen (21) of the water collecting box (2). The spiral rod (211) is rotatably arranged in the water collecting box (2). The axis of the spiral rod (211) is parallel to the rotating shaft (11). A dust collecting box (212) is arranged at one end of the water collecting box (2) away from the first pipe (22). The dust collecting box (212) is provided with a second pipe (213) connected to an external recovery device. A first driving assembly (27) for synchronously driving a plurality of first support frames (24) is provided at the bottom of the water collection box (2); A plurality of ultrasonic transducers (141) arranged in a rectangular array are provided on the wall of the cleaning pool (14); The top of both sides of the water collecting box (2) is provided with a mounting shaft (25), the mounting shaft (25) is parallel to the axis of the rotating shaft (11), the bottom of the baffle (23) is sleeved on the mounting shaft (25), the connecting rod (231) is fixedly connected to the bottom of the baffle (23) to form an L-shaped structure therewith, the connecting rods (231) of the two baffles (23) are arranged in a mirror-symmetrical state, the connecting rod (231) is provided with a slide rail (2311) extending along its length direction, the driving shaft (242) passes through the slide rails (2311) of the two connecting rods (231) and slidably cooperates with them, the driving shaft (242) is provided with a pulley (2421) on the sliding part of the slide rail (2311), the interior of the water collecting box (2) is provided with a slide groove (26) extending along the height direction of the frame (1), and the driving shaft (242) is provided with a slide groove (26) extending along the height direction of the frame (1). The movable shaft (242) is slidably arranged on the slide groove (26). The movement of the first support frame (24) can drive the movement of the driving shaft (242). By setting the driving shaft (242), only one of the first support frames (24) needs to be driven, and all the first support frames (24) can move synchronously with the movement of the driving shaft (242). The movement of the driving shaft (242) can also drive the movement of the pulley (2421), so that the pulley (2421) slides along the slide rail (2311) of the connecting rod (231), so that the two baffles (23) rotate around the installation shaft (25), so that when the first support frame (24) is retracted, the two baffles (23) move closer to the first support frame (24), thereby preventing the screw on the transfer frame (12) from rotating.

2. A plastic screw extruder screw parts cleaning device according to claim 1, characterized in that: Two second support frames (142) that can slide synchronously along the height direction of the frame (1) are arranged at the bottom of the cleaning pool (14).

3. A plastic screw extruder screw parts cleaning device according to claim 2, characterized in that: A second driving assembly (143) capable of synchronously driving the two second support frames (142) is provided at the bottom of the cleaning pool (14).

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