Double-station part cleaning assembly line and cleaning method thereof

Abstract

The invention discloses a double-station part cleaning assembly line and a cleaning method thereof.The cleaning assembly line comprises a first conveying line, a second conveying line and a third conveying line, and the first conveying line is sequentially provided with an ultrasonic cleaning station and a high-pressure spraying station in the conveying direction; a pure water rinsing station, a wind cutting station and a drying station are sequentially arranged on the third conveying line in the conveying direction; the second conveying line is in butt joint with the first conveying line and the third conveying line, and the conveying speed of the second conveying line is adjustable; the second conveying line is sequentially provided with a fixed-point cleaning station A and a fixed-point cleaning station B in the conveying direction, the fixed-point cleaning station A is provided with a plurality of fixed-point cleaning nozzles A, and the fixed-point cleaning station B is provided with a plurality of fixed-point cleaning nozzles B; and when the part B is conveyed to the fixed-point cleaning station A, the second conveying line independently accelerates conveying, and the part B is conveyed to the fixed-point cleaning station B from the fixed-point cleaning station A. The parts can skip the non-corresponding fixed-point cleaning stations, so that the cleaning time of one station is saved, and the cleaning efficiency is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile manufacturing, and particularly relates to a double-station part cleaning production line and a cleaning method thereof. Background Art

[0002] Existing automobile part cleaning production lines, such as "An Automobile Part Cleaning Production Line and Cleaning Method" with the publication number CN108856095B, provide an automobile part cleaning production line that performs multiple cleanings on automobile parts to avoid oil pollution of other automobile parts. Along the transmission direction of the automobile parts, there are sequentially arranged a spray cleaning assembly, an ultrasonic cleaning assembly, a clear water spray rinsing assembly, a bubbling cleaning assembly, a pure water spray rinsing assembly, and an air drying device. Through the setting of the conveying device, automobile parts can be sent to the corresponding cleaning assemblies for cleaning.

[0003] However, for automobile parts with a large number of holes and deep hole diameters, the prior art does not perform fixed-point cleaning on the holes, so that the automobile parts still cannot meet the cleanliness requirements of customers after cleaning. And, as Figure 1 shown, since the customer's Part A and Part B can share the same set of tire molds, during production, Part A and Part B are produced in two lines and conveyed to the automobile part cleaning production line for cleaning through a conveyor belt, so that Part A and Part B are arranged alternately. If fixed-point cleaning is set according to the part hole diameter, for the production line, Part A and Part B will inevitably need to be cleaned at non-corresponding fixed-point cleaning stations, which not only wastes time but also wastes resources. Summary of the Invention

[0004] The present invention aims to provide a double-station part cleaning production line to solve one or more technical problems existing in the prior art, and at least provide a beneficial choice or create conditions.

[0005] The double-station part cleaning production line according to the first aspect embodiment of the present invention includes:

[0006] A first conveyor line, which is sequentially provided with an ultrasonic cleaning station and a high-pressure spray station along the conveying direction;

[0007] A third conveyor line, which is sequentially provided with a pure water rinsing station, an air knife station, and a drying station along the conveying direction;

[0008] The second conveyor line is respectively connected to the first conveyor line and the third conveyor line. The first conveyor line, the second conveyor line, and the third conveyor line all maintain the same conveying direction. The conveying speeds of the first conveyor line and the third conveyor line are the same, and the conveying speed of the second conveyor line is adjustable. Along the conveying direction, the second conveyor line is successively provided with a fixed-point cleaning station A and a fixed-point cleaning station B. The fixed-point cleaning station A is provided with a plurality of fixed-point cleaning nozzles A, and the installation positions of all the fixed-point cleaning nozzles A respectively correspond one-to-one to all the deep hole positions of the A part. The fixed-point cleaning station B is provided with a plurality of fixed-point cleaning nozzles B, and the installation positions of all the fixed-point cleaning nozzles B respectively correspond one-to-one to all the deep hole positions of the B part. When the B part is conveyed to the fixed-point cleaning station A, the second conveyor line accelerates and conveys it alone, and conveys the B part from the fixed-point cleaning station A to the fixed-point cleaning station B. At this time, the fixed-point cleaning station A is vacant.

[0009] The double-station part cleaning production line according to the embodiment of the present invention has at least the following beneficial effects: The A parts and the B parts are alternately arranged along the conveying direction. When the A part is conveyed by the first conveyor line to the fixed-point cleaning station A of the second conveyor line, a plurality of fixed-point cleaning nozzles A perform fixed-point cleaning on all the deep holes of the A part, so as to prevent processing chips from accumulating in the deep holes and affecting subsequent assembly. After the A part is fixed-point cleaned, the first conveyor line continues to convey the B part to the fixed-point cleaning station A of the second conveyor line. Since the fixed-point cleaning station A is not designed for the deep holes of the B part, the second conveyor line will accelerate and convey it alone at this time, so that the B part is conveyed to the fixed-point cleaning station B for fixed-point cleaning. And because the second conveyor line is independent of the first conveyor line and the third conveyor line, the positions of the parts on other conveyor lines will not be affected, and the A parts that have been fixed-point cleaned can also be conveyed to the pure water rinsing station of the third conveyor line. That is to say, the present invention can make the B part skip the fixed-point cleaning station A, and the A part skip the fixed-point cleaning station B, saving the cleaning time of a whole station, effectively improving the cleaning efficiency, and thus meeting the requirement of alternating cleaning of the A part and the B part.

[0010] According to some embodiments of the present invention, both the fixed-point cleaning station A and the fixed-point cleaning station B are provided with induction sensors, and the detection direction of the induction sensors points to the position of the parts. When the induction sensors do not sense the parts, the corresponding fixed-point cleaning stations do not start, so as to prevent the idle fixed-point cleaning stations from starting when there are no parts, thereby saving the cleaning cost.

[0011] According to some embodiments of the present invention, each station is provided with an independent circulating filtration system. Since cleaning agents may be used in the water-related stations, and different cleaning agents cannot be mixed, each water-related station needs to be independently circulated and filtered.

[0012] According to some embodiments of the present invention, pneumatic gates are provided between any two adjacent workstations, and the pneumatic gates are used to control the connection or disconnection between the adjacent two workstations. Since the cleaning agents used in each workstation may be different and different cleaning agents cannot be mixed, in order to ensure the independence of each workstation during operation, pneumatic gates are needed to close the connection between adjacent two workstations and open the pneumatic gates when parts need to be transported.

[0013] According to some embodiments of the present invention, the high-pressure spray workstation is provided with a spray pipe controlled to move by a spray servo motor, and the moving direction of the spray pipe is orthogonal to the conveying direction of the first conveyor line. The spray servo motor can more precisely control the movement of the spray pipe. For example, on the basis of moving spray, it can perform enhanced spraying on specific positions so that the spraying time at this position is longer than that at other positions.

[0014] According to some embodiments of the present invention, the number of pure water rinsing workstations is two, and the two pure water rinsing workstations are arranged in sequence along the conveying direction of the third conveyor line. Since the pure water rinsing workstation can effectively ensure that there are no water marks or other residues on the product surface, the first pure water rinsing workstation can achieve the primary rinsing of the parts, and the second pure water rinsing workstation can achieve the final rinsing of the parts.

[0015] According to some embodiments of the present invention, each pure water rinsing workstation is provided with a rinsing pipe controlled to move by a pure water servo motor, and the moving direction of the rinsing pipe is orthogonal to the conveying direction of the third conveyor line. The pure water servo motor can more precisely control the movement of the rinsing pipe. For example, on the basis of moving rinsing, it can perform enhanced rinsing on specific positions so that the rinsing time at this position is longer than that at other positions.

[0016] According to some embodiments of the present invention, the moving ends of the two rinsing pipes both stop at the length center of the part, and the moving paths of the two rinsing pipes jointly cover the overall length of the part. Since the circulating filtration process of pure water is relatively long, the water outlet flow rate of the rinsing pipe is small. In the present invention, the first pure water rinsing workstation can be set to rinse half of the length of the part, and the second pure water rinsing workstation can be set to rinse the remaining half of the length of the part, effectively extending the unit rinsing time of each position of the part, and the rinsing effect will be better.

[0017] According to some embodiments of the present invention, the air knife workstation is provided with an air knife pipe controlled to move by an air knife servo motor, and the moving direction of the air knife pipe is orthogonal to the conveying direction of the third conveyor line. The air knife servo motor can more precisely control the movement of the air knife pipe. For example, on the basis of moving air knife, it can perform enhanced air knife on specific positions so that the air knife time at this position is longer than that at other positions.

[0018] The cleaning method according to the embodiment of the second aspect of the present invention applies the above-mentioned double-station part cleaning production line. When part A and part B are arranged alternately along the conveying direction, the method includes the following steps:

[0019] The first conveyor line drives the parts to sequentially pass through the ultrasonic cleaning station and the high-pressure spraying station. The ultrasonic cleaning station performs ultrasonic cleaning on the parts, and the high-pressure spraying station performs high-pressure spraying on the parts.

[0020] When part A is conveyed by the first conveyor line to the fixed-point cleaning A station of the second conveyor line, multiple fixed-point cleaning A nozzles at the fixed-point cleaning A station clean all the deep holes of part A.

[0021] When part B is conveyed by the first conveyor line to the fixed-point cleaning A station of the second conveyor line, the second conveyor line synchronously conveys the already fixed-point cleaned part A to the fixed-point cleaning B station, and then the second conveyor line accelerates and conveys alone, causing part B to be conveyed to the fixed-point cleaning B station, and the already fixed-point cleaned part A is conveyed by the second conveyor line to the pure water rinsing station of the third conveyor line. After that, multiple fixed-point cleaning B nozzles at the fixed-point cleaning B station clean all the deep holes of part B.

[0022] The third conveyor line drives the parts to sequentially pass through the pure water rinsing station, the air knife station, and the drying station. The pure water rinsing station performs pure water rinsing on the parts, the air knife station performs air knife treatment on the parts, and the drying station dries the parts.

[0023] The cleaning method according to the embodiment of the present invention has at least the following beneficial effects: Compared with the existing cleaning methods, the present invention can not only realize the production line cleaning of part A and part B, but also perform fixed-point cleaning for different parts. On the premise of meeting the production line cleaning, it skips unnecessary cleaning stations, achieving the purpose of cost reduction and efficiency improvement.

[0024] The additional aspects and advantages of the present invention will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present invention. Description of the Drawings

[0025] The above and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0026] Figure 1 is a three-dimensional structural schematic diagram when part A and part B are positioned with the tire mold;

[0027] Figure 2 is a front view of the double-station part cleaning production line provided by the embodiment of the present invention;

[0028] Figure 3 It is the rear view of the double-station part cleaning pipeline provided by the embodiment of the present invention;

[0029] Figure 4 It is the three-dimensional structure schematic diagram of the fixed-point cleaning mechanism provided by the embodiment of the present invention;

[0030] Figure 5 is Figure 4 the front view of the fixed-point cleaning mechanism shown;

[0031] Figure 6 It is the three-dimensional structure schematic diagram of the moving nozzle mechanism provided by the embodiment of the present invention;

[0032] Figure 7 It is the three-dimensional structure schematic diagram of the pneumatic gate provided by the embodiment of the present invention.

[0033] In the drawings: 100 - First conveyor line, 200 - Second conveyor line, 300 - Third conveyor line, 410 - Part A, 420 - Part B, 430 - Tire mold, 110 - Ultrasonic cleaning station, 120 - High-pressure spraying station, 500 - Pneumatic gate, 510 - First cylinder, 520 - Limit rod, 530 - Gate rod, 540 - Gate, 101 - Top plate, 121 - Spraying pipe, 122 - Nozzle, 123 - High-pressure pump, 102 - Oil mist separator, 210 - Fixed-point cleaning station A, 220 - Fixed-point cleaning station B, 211 - Second cylinder, 212 - Connecting rod, 213 - Cleaning pipe, 214 - Fixed-point cleaning plate, 215 - Fixed-point cleaning nozzle, 310 - Pure water rinsing station, 320 - Air knife station, 330 - Drying station, 311 - Pure water unit, 312 - Pure water tank, 321 - Air storage tank, 331 - Vacuum pump, 332 - Chiller. Detailed implementation manners

[0034] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0035] In the description of the present invention, it should be understood that for the orientation description, such as the up, down, front, rear, left, right, etc. indicating the orientation or position relationship is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0036] In the description of the present invention, the meaning of "several" is one or more, the meaning of "multiple" is more than two, and understandings such as "greater than", "less than", "exceeding", etc. do not include the base number, and understandings such as "above", "below", "within", etc. include the base number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0037] In the description of the present invention, unless otherwise clearly defined, words such as "set", "installed", "connected", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0038] As Figures 1 to 3 shown, the double-station part cleaning pipeline according to the first aspect embodiment of the present invention includes a first conveyor line 100, a second conveyor line 200, and a third conveyor line 300. If the double-station part cleaning pipeline is docked to the production station, then one end of the first conveyor line 100 is docked to the production station, that is, the parts and their molds 430 processed at the production station enter the first conveyor line 100 in a pipeline manner. If the double-station part cleaning pipeline is independent of the production station, then the staff needs to place the processed parts and their molds 430 on the first conveyor line 100.

[0039] The present invention preferably docks the double-station part cleaning pipeline to the production station. And since part A 410 and part B 420 can share the same set of molds 430, during production, part A 410 and part B 420 are produced in two lines and are conveyed by a conveyor belt to the double-station part cleaning pipeline for cleaning, so that part A 410 and part B 420 are arranged alternately, that is, there is one part B 420 between every two parts A 410. The object of the present invention is based on the alternating cleaning of part A 410 and part B 420.

[0040] The first conveyor line 100, the second conveyor line 200, and the third conveyor line 300 are sequentially docked in a straight line, and the first conveyor line 100, the second conveyor line 200, and the third conveyor line 300 all maintain the same conveying direction. The present invention does not limit the specific structures of the first conveyor line 100, the second conveyor line 200, and the third conveyor line 300, which include but are not limited to conveyor belts, conveyor chains, etc. But no matter what structures the first conveyor line 100, the second conveyor line 200, and the third conveyor line 300 are, they all need to meet the conveying of the mold 430.

[0041] There is an ultrasonic cleaning station 110 and a high-pressure spraying station 120 on the first conveyor line 100. The ultrasonic cleaning station 110 is located upstream of the high-pressure spraying station 120. When the parts enter the first conveyor line 100, they are first ultrasonically cleaned in the ultrasonic cleaning station 110 and then conveyed to the high-pressure spraying station 120 for high-pressure spraying. Both the ultrasonic cleaning station 110 and the high-pressure spraying station 120 are provided with water tanks for collecting waste water for recycling by the circulating filtration system. Since the high-pressure spraying station 120 needs to add cleaning agents for cleaning while the ultrasonic cleaning station 110 does not, in order to prevent water from flowing back between the high-pressure spraying station 120 and the ultrasonic cleaning station 110 during operation and causing the cleaning agent to enter the ultrasonic cleaning station 110, a pneumatic gate 500 is provided between the ultrasonic cleaning station 110 and the high-pressure spraying station 120. Moreover, both the ultrasonic cleaning station 110 and the high-pressure spraying station 120 are provided with independent circulating filtration systems. Since it is difficult to filter the cleaning agent, if the circulating filtration systems are used in a mixed manner, mutual contamination is bound to occur.

[0042] As Figure 7 shown, the pneumatic gate 500 includes a first cylinder 510, a limit rod 520, a gate rod 530 and a gate 540. The first cylinder 510 is connected above the top plate 101, and its telescopic part faces upward. The telescopic part is connected to the top plate 101 by two limit rods 520 for limit connection. When the limit rod 520 abuts downward against the top plate 101, the first cylinder 510 cannot continue to retract downward, thus limiting the retraction stroke of the first cylinder 510. Two gate rods 530 pass through the top plate 101 and are fixedly connected to the telescopic part. The lower ends of the two gate rods 530 are fixedly connected to the gate 540 together. The gate rod 530 is movably connected to the top plate 101 through a flange linear bearing. When the telescopic part of the first cylinder 510 extends upward, the two gate rods 530 and the two limit rods 520 move upward under the drive of the telescopic part, thereby driving the gate 540 to move upward together. At this time, the electric gate 540 is in the open state; when the telescopic part of the first cylinder 510 retracts downward, the two gate rods 530 and the two limit rods 520 move downward under the drive of the telescopic part, thereby driving the gate 540 to move downward together until the two limit rods 520 abut against the top plate 101. At this time, the electric gate 540 is in the closed state.

[0043] The start of the pneumatic gate 500 is associated with the start of the first conveyor line 100. When the first conveyor line 100 starts to convey, the pneumatic gate 500 switches to the open state, so that the parts can enter from the ultrasonic cleaning station 110 to the high-pressure spraying station 120; when the first conveyor line 100 stops conveying, the pneumatic gate 500 switches to the closed state. At this time, the ultrasonic cleaning station 110 and the high-pressure spraying station 120 clean the corresponding parts simultaneously to prevent water from flowing back between different stations.

[0044] Specifically, the ultrasonic cleaning station 110 is provided with a cleaning cover that can be lifted up and down, and an ultrasonic generator is provided in the cleaning cover. When the parts enter the ultrasonic cleaning station 110 and are transported to a predetermined position, the lifting mechanism drives the cleaning cover downward to cover the entire tire mold 430 until the ultrasonic generator contacts the water in the water tank, and the cavitation effect, acceleration effect and straight flow effect of the ultrasonic wave in the liquid are used to indirectly clean the parts, so that the dirt layer on the parts is dispersed, emulsified and peeled off to achieve the purpose of cleaning. Ultrasonic cleaning can penetrate into the complex structure of the parts, such as threaded holes, blind holes, gaps, etc., and completely remove these dirts to improve the precision and surface quality of the parts.

[0045] like Figure 6 As shown, the high-pressure spray station 120 is provided with a movable nozzle mechanism, and the movable nozzle mechanism is provided with a spray pipe 121 controlled by a spray servo motor. The moving direction of the spray pipe 121 is orthogonal to the conveying direction of the first conveyor line 100. When the spray pipe 121 moves to any end of the moving path, the spray pipe 121 is not on the conveying path of the parts and will not block the conveying of the parts. The spray pipe 121 is in the shape of a "冂" shape, and the top surface and two side surfaces of the parts are located on the inner side of the spray pipe 121. The spray pipe 121 is provided with a plurality of nozzles 122 at the position facing the parts. The spray pipe 121 is connected to a high-pressure pump 123, and the high-pressure pump 123 pressurizes the cleaning liquid so that the nozzle 122 can spray high-pressure liquid outward to enhance the cleaning effect. When the parts enter the high-pressure spray station 120 and are transported to the predetermined position, the spray servo motor drives the spray pipe 121 to move from one end of the moving path to the other end of the moving path, and repeats at least once. During this process, the nozzle 122 sprays high-pressure liquid along the length direction of the parts to perform comprehensive high-pressure cleaning on the parts. Since the high-pressure spray station 120 requires a cleaning agent, and the cleaning agents used for different types of parts may be different, the present invention does not specifically limit the types of cleaning agents, and those skilled in the art need to select different cleaning agents according to actual conditions.

[0046] It should be noted that the water temperature of both the ultrasonic cleaning station 110 and the high-pressure spraying station 120 needs to reach 40°C to 60°C. Under this water temperature range, the cleaning effect will be better. Compared with ordinary motors, the spray servo motor can more finely control the movement of the spray pipe 121. For example, on the basis of mobile spraying, enhanced spraying can be performed at a specific position so that the spraying time at this position is longer than the spraying time at other positions.

[0047] like Figure 2 and Figure 3As shown in the figure, a fixed-point cleaning station A 210 and a fixed-point cleaning station B 220 are provided on the second conveyor line 200. The fixed-point cleaning station A 210 is located upstream of the fixed-point cleaning station B 220. When the parts are transported from the first conveyor line 100 to the second conveyor line 200, the parts first enter the fixed-point cleaning station A 210 and are then transported to the fixed-point cleaning station B 220. Both the fixed-point cleaning station A 210 and the fixed-point cleaning station B 220 are provided with water tanks for collecting wastewater for recycling by the circulating filtration system. Since cleaning agents need to be added at the fixed-point cleaning stations, but the cleaning agents used for part A 410 may be different from those used for part B 420, in order to prevent water from flowing between the fixed-point cleaning station A 210 and the fixed-point cleaning station B 220 during operation, resulting in the mixing of cleaning agents, a pneumatic gate 500 is provided between the fixed-point cleaning station A 210 and the fixed-point cleaning station B 220. Similarly, a pneumatic gate 500 is also provided between the fixed-point cleaning station A 210 and the high-pressure spraying station 120. The structure of the pneumatic gate 500 is as Figure 7 shown. Since the specific structure of the pneumatic gate 500 has been specifically disclosed above, it will not be repeated here. In addition, both the fixed-point cleaning station A 210 and the fixed-point cleaning station B 220 are provided with independent circulating filtration systems. Since it is difficult to filter cleaning agents, if the circulating filtration systems are used interchangeably, it will inevitably cause cross-contamination.

[0048] In the fixed-point cleaning stations, fixed-point cleaning is mainly carried out on the deep holes or deep grooves of the parts. Therefore, the fixed-point cleaning station A 210 is provided with a plurality of fixed-point cleaning nozzles A, and the installation positions of all the fixed-point cleaning nozzles A correspond one by one to all the deep holes or deep groove positions of part A 410. The fixed-point cleaning station B 220 is provided with a plurality of fixed-point cleaning nozzles B, and the installation positions of all the fixed-point cleaning nozzles B correspond one by one to all the deep holes or deep groove positions of part B 420.

[0049] As Figure 4 and Figure 5As shown, specifically, the two fixed-point cleaning stations are both provided with a fixed-point cleaning mechanism, which includes a second cylinder 211, a connecting rod 212, a cleaning pipe 213 and a fixed-point cleaning plate 214. The second cylinder 211 is connected to the top of the top plate 101, and its telescopic part faces upward. Four connecting rods 212 pass through the top plate 101 and are fixedly connected to the telescopic part. The connecting rods 212 and the top plate 101 are movably connected through flange linear bearings. The lower ends of the four connecting rods 212 are commonly fixedly connected with a fixed-point cleaning plate 214. The cleaning pipe 213 supplies water to the fixed-point cleaning plate 214. The fixed-point cleaning plate 214 is in a "冂" shape. The top surface and two side surfaces of the part are located on the inner side of the fixed-point cleaning plate 214. The fixed-point cleaning plate 214 is provided with a plurality of fixed-point cleaning nozzles 215 at a position facing the part. The setting positions of all the fixed-point cleaning nozzles 215 correspond to all the deep holes or deep grooves of the corresponding parts. When the telescopic part of the second cylinder 211 retracts downward, the four connecting rods 212 move downward under the drive of the telescopic part, thereby driving the fixed-point cleaning plate 214 to cover the parts downward; when the telescopic part of the second cylinder 211 extends upward, the four connecting rods 212 move upward under the drive of the telescopic part, thereby driving the fixed-point cleaning plate 214 to move upward away from the parts.

[0050] When the part enters the fixed-point cleaning station and is transported to a predetermined position, the second cylinder 211 drives the fixed-point cleaning plate 214 to cover the part downwards. During this process, multiple fixed-point cleaning nozzles 215 perform fixed-point cleaning on all deep holes or deep grooves of the part. Since the fixed-point cleaning station requires a cleaning agent, and the cleaning agents used for different types of parts may be different, the present invention does not specifically limit the types of cleaning agents, and those skilled in the art need to select different cleaning agents according to actual conditions.

[0051] That is, when part A 410 enters the fixed-point cleaning station B 220, the fixed-point cleaning station B 220 cannot perform fixed-point cleaning on part A 410 because the positions of the multiple fixed-point cleaning nozzles B of the fixed-point cleaning station B 220 do not correspond to the deep holes or deep grooves of part A 410. Similarly, when part B 420 enters the fixed-point cleaning station A 210, the fixed-point cleaning station A 210 cannot perform fixed-point cleaning on part B 420 because the positions of the multiple fixed-point cleaning nozzles A of the fixed-point cleaning station A 210 do not correspond to the deep holes or deep grooves of part B 420.

[0052] According to the conventional design concept in the art, in order to achieve fixed-point cleaning of part A 410 and part B 420, in the cleaning production line, a fixed-point cleaning station A 210 and a fixed-point cleaning station B 220 are sequentially arranged. When part A 410 enters the fixed-point cleaning station A 210, the fixed-point cleaning station A 210 performs fixed-point cleaning on the deep holes or deep grooves of part A 410. Once part A 410 enters the fixed-point cleaning station B 220, the fixed-point cleaning station B 220 continues to clean part A 410 or pauses working under the control of the control system. Similarly, when part B 420 enters the fixed-point cleaning station A 210, the fixed-point cleaning station A 210 continues to clean part B 420 or pauses working under the control of the control system. Once part B 420 enters the fixed-point cleaning station B 220, the fixed-point cleaning station B 220 performs fixed-point cleaning on the deep holes or deep grooves of part B 420. However, regardless of whether the fixed-point cleaning station pauses working for non-corresponding parts, the parts need to completely pass through the two fixed-point cleaning stations before being conveyed to the third conveyor line 300.

[0053] Compared with the conventional design concept in the art, the present invention sets the conveying speed of the second conveyor line 200 to be adjustable. The conveying speed of the second conveyor line 200 can be different from the conveying speeds of the first conveyor line 100 and the third conveyor line 300. Since the second conveyor line 200 is independent of the first conveyor line 100 and the third conveyor line 300, the change in the conveying speed of the second conveyor line 200 will not affect other conveyor lines or the setting of the production line. The advantage of this setting is that part A 410 and part B 420 are alternately arranged along the conveying direction. When part A 410 is conveyed by the first conveyor line 100 to the fixed-point cleaning station A 210 of the second conveyor line 200, multiple fixed-point cleaning nozzles for A perform fixed-point cleaning on all the deep holes of part A 410 to prevent machining chips from accumulating in the deep holes and affecting subsequent assembly. After part A 410 is fixed-point cleaned, the first conveyor line 100 continues to convey part B 420 to the fixed-point cleaning station A 210 of the second conveyor line 200. Since the fixed-point cleaning station A 210 is not designed for the deep holes of part B 420, the second conveyor line 200 will accelerate separately at this time, causing part B 420 to be conveyed to the fixed-point cleaning station B 220 for fixed-point cleaning, and the fixed-point cleaned part A 410 can also be conveyed to the third conveyor line 300. That is to say, the present invention can enable part B 420 to skip the fixed-point cleaning station A 210 and part A 410 to skip the fixed-point cleaning station B 220, saving the cleaning time of a whole station and effectively improving the cleaning efficiency, so as to meet the requirement of alternating cleaning of part A 410 and part B 420.

[0054] Furthermore, induction sensors are provided at both the fixed-point cleaning station A 210 and the fixed-point cleaning station B 220, and the detection direction of the induction sensors points to the position of the parts. When the induction sensors do not sense the parts, the corresponding fixed-point cleaning stations do not start, so as to prevent the idle fixed-point cleaning stations from starting when there are no parts, thus saving the cleaning cost. Of course, this process can also be controlled by a control system. For example, the working interval of the fixed-point cleaning stations can be set through a PLC, and the purpose of saving the cleaning cost can also be achieved.

[0055] It should be noted that whether it is the fixed-point cleaning station A 210 or the fixed-point cleaning station B 220, the water temperature needs to reach 40°C to 60°C. In this water temperature range, the cleaning effect will be better.

[0056] Since the water temperature of the above-mentioned stations reaches 40°C to 60°C, water vapor will be generated during their operation. If the water vapor is not treated, the water vapor will be mixed with cutting fluid oil stains and diffuse throughout the workshop, thus polluting the entire workshop. For this reason, an oil mist separator 102 needs to be provided on the top plate 101. The oil mist separator 102 can be divided into a centrifugal oil mist separator, an electrostatic oil mist separator, or a condensation type oil mist separator, etc. Taking the centrifugal oil mist separator as an example, when it is powered on, a strong negative pressure is generated at the mist suction port to force the oil mist to be directionally sucked into the mist suction device. The oil mist particles collide under the action of the wind wheel in the mist suction device, and the tiny particles aggregate into larger particles that can be controlled and are intercepted by the high-efficiency mist suction material and collected and recycled through the return port.

[0057] As Figure 2 and Figure 3 shown, the third conveyor line 300 is successively provided with a pure water rinsing station 310, an air knife station 320, and a drying station 330 along the conveying direction. The pure water rinsing station 310 is located at the most upstream, and the drying station 330 is located at the most downstream. When the parts are conveyed by the second conveyor line 200 to the third conveyor line 300, the parts first enter the pure water rinsing station 310 at this time, and then are conveyed to the air knife station 320 and the drying station 330. The pure water rinsing station 310 is provided with a water tank for collecting waste water for recycling by the circulating filtration system. Since the pure water rinsing station 310 involves water circulation, and the air knife station 320 and the drying station 330 involve air circulation, in order to prevent water and air from leaking between adjacent stations during operation, pneumatic gates 500 are provided between every two adjacent stations. The structure of the pneumatic gate 500 is as Figure 7 shown. Since the specific structure of the pneumatic gate 500 has been specifically disclosed above, it will not be repeated here.

[0058] Specifically, the structure of the pure water rinsing station 310 can be referred to Figure 6The high-pressure spray station 120 structure is provided with a rinsing pipe controlled by a rinsing servo motor. The moving direction of the rinsing pipe is orthogonal to the conveying direction of the third conveyor line 300. When the rinsing pipe moves to any end of the moving path, the rinsing pipe at this time is not on the conveying path of the parts and will not block the conveying of the parts. The shape of the rinsing pipe is "冂" shaped. The top surface and two side surfaces of the parts are located on the inner side of the rinsing pipe. The rinsing pipe is provided with a plurality of nozzles 122 at the position facing the parts. The rinsing pipe is connected to a pure water unit 311, and the pure water unit 311 provides pure water for the rinsing pipe. The pure water unit 311 converts city water into pure water through pure water filtration technology and stores it in a pure water tank 312. In the process of producing pure water, the waste water generated by filtration can be collected for recycling such as flushing toilets or mopping the floor. When using pure water to rinse parts, it can effectively ensure that there are no water marks and other residues on the surface of the product.

[0059] When the parts enter the pure water rinsing station 310 and are transported to a predetermined position, the rinsing servo motor drives the rinsing tube to move from one end of the moving path to the other end of the moving path and repeats at least once. During this process, the nozzle 122 sprays pure water along the length direction of the parts to rinse the parts with pure water.

[0060] In this embodiment, there are two pure water rinsing stations 310, which are arranged in sequence along the conveying direction of the third conveyor line 300. Since the pure water rinsing stations 310 can effectively ensure that there is no water mark or other residue on the surface of the product, the first pure water rinsing station 310 can achieve the initial rinsing of the parts, and the second pure water rinsing station 310 can achieve the final rinsing of the parts.

[0061] Alternatively, the moving end points of the two rinsing pipes both stop at the length center of the part, but the two rinsing pipes have different moving paths, so that the moving paths of the two rinsing pipes can jointly cover the entire length of the part. Since the circulation and filtration process of pure water is relatively long, the water flow rate of the rinsing pipe is relatively small. The present invention can set the first pure water rinsing station 310 to half the length of the rinsed part, and set the second pure water rinsing station 310 to the remaining half of the length of the rinsed part, effectively extending the unit rinsing time of each position of the part, and the rinsing effect will be better.

[0062] On the other hand, the structure of the wind shear station 320 can be referred to Figure 6The high-pressure spray station 120 structure is provided with an air shear tube controlled by an air shear servo motor. The moving direction of the air shear tube is orthogonal to the conveying direction of the third conveyor line 300. When the air shear tube moves to any end of the moving path, the air shear tube is not on the conveying path of the parts and will not block the conveying of the parts. The air shear tube is in a "冂" shape. The top surface and two side surfaces of the parts are located on the inner side of the air shear tube. The air shear tube is provided with multiple nozzles 122 at the position facing the parts. The air shear tube is connected to the gas tank 321. The air pump provides high-pressure gas to the gas tank 321. The high-pressure gas passes through the air shear tube to shear the residual liquid on the parts. The residual liquid attached to the surface of the parts will roll away from the surface of the parts along the direction of the air flow under the action of the high-speed airflow.

[0063] It should be noted that compared with ordinary motors, the rinse servo motor and the wind shear servo motor can control the movement of the rinse tube and the wind shear tube more finely. For example, on the basis of mobile rinsing, enhanced rinsing can be performed on a specific position so that the rinsing time at this position is longer than the rinsing time at other positions; on the basis of mobile wind shear, enhanced wind shear can be performed on a specific position so that the wind shear time at this position is longer than the wind shear time at other positions.

[0064] On the other hand, the drying station 330 is provided with a drying hood that can be lifted up and down. A vacuum tube is connected to the drying hood. When the parts enter the drying station 330 and are transported to the predetermined position, the lifting mechanism drives the drying hood downward to cover the entire tire mold 430. During the vacuum drying process, the water in the parts is sublimated into water vapor and then pumped out by the vacuum pump 331. Part of the water vapor will be cooled in the condenser and condensed into liquid water again, and then discharged from the equipment through the drainage system. The chiller 332 ensures that the water vapor can be effectively condensed into water by maintaining the low temperature environment of the condenser, thereby improving the drying efficiency.

[0065] Although the first conveyor line 100 and the third conveyor line 300 are also independently set, and the conveying speeds of the two are also variable, in order to maintain the cleaning rhythm of the assembly line, the conveying speeds of the first conveyor line 100 and the third conveyor line 300 are always kept consistent. Moreover, no matter what kind of station, its working time is kept consistent. Assuming that the normal working time of the high-pressure spray station 120 is 25 seconds, and the normal working time of the fixed-point cleaning station is 20 seconds, either the working time of the high-pressure spray station 120 is compressed to 20 seconds, or the working time of the fixed-point cleaning station is extended to 25 seconds, so as to keep each station with the same working time.

[0066] According to the cleaning method of the second embodiment of the present invention, the double-station parts cleaning line according to the first embodiment of the present invention is used. When the A part 410 and the B part 420 are alternately arranged along the conveying direction, the cleaning method comprises the following steps:

[0067] S100. The first conveyor line 100 drives the parts to pass through the ultrasonic cleaning station 110 and the high-pressure spraying station 120 in sequence. The ultrasonic cleaning station 110 performs ultrasonic cleaning on the parts, and the high-pressure spraying station 120 performs high-pressure spraying on the parts.

[0068] S200. When the A part 410 is conveyed by the first conveyor line 100 to the fixed-point cleaning A station 210 of the second conveyor line 200, multiple fixed-point cleaning A nozzles at the fixed-point cleaning A station 210 clean all the deep holes or deep grooves of the A part 410.

[0069] S300. When the B part 420 is conveyed by the first conveyor line 100 to the fixed-point cleaning A station 210 of the second conveyor line 200, the second conveyor line 200 synchronously conveys the A part 410 that has been fixed-point cleaned to the fixed-point cleaning B station 220, and then the second conveyor line 200 accelerates and conveys alone, causing the B part 420 to be conveyed to the fixed-point cleaning B station 220. At this time, the fixed-point cleaning A station 210 is vacant, and the A part 410 that has been fixed-point cleaned is conveyed by the second conveyor line 200 to the pure water rinsing station 310 of the third conveyor line 300. After that, multiple fixed-point cleaning B nozzles at the fixed-point cleaning B station 220 clean all the deep holes or deep grooves of the B part 420.

[0070] S400. The third conveyor line 300 drives the parts to pass through the pure water rinsing station 310, the air knife station 320 and the drying station 330 in sequence. The pure water rinsing station 310 performs pure water rinsing on the parts, the air knife station 320 performs air knife treatment on the parts, and the drying station 330 dries the parts.

[0071] When the A parts 410 are arranged in a single row along the conveying direction, the cleaning method includes the following steps:

[0072] S10. The first conveyor line 100 drives the parts to pass through the ultrasonic cleaning station 110 and the high-pressure spraying station 120 in sequence. The ultrasonic cleaning station 110 performs ultrasonic cleaning on the parts, and the high-pressure spraying station 120 performs high-pressure spraying on the parts.

[0073] S20. When the A part 410 is conveyed by the first conveyor line 100 to the fixed-point cleaning A station 210 of the second conveyor line 200, multiple fixed-point cleaning A nozzles at the fixed-point cleaning A station 210 clean all the deep holes or deep grooves of the A part 410.

[0074] S30. After the A part 410 is cleaned at the fixed point, the second conveyor line 200 accelerates and conveys it alone, so that the A part 410 is conveyed to the fixed-point cleaning B station 220. At this time, the fixed-point cleaning A station 210 is vacant. When the next A part 410 is conveyed by the first conveyor line 100 to the fixed-point cleaning A station 210 of the second conveyor line 200, the second conveyor line 200 synchronously conveys the A part 410 that has been cleaned at the fixed point to the pure water rinsing station 310 of the third conveyor line 300.

[0075] S40. The third conveyor line 300 drives the parts to pass through the pure water rinsing station 310, the air knife station 320 and the drying station 330 in sequence. The pure water rinsing station 310 rinses the parts with pure water, the air knife station 320 performs air knife treatment on the parts, and the drying station 330 dries the parts.

[0076] When the B parts 420 are arranged in a single row along the conveying direction, the cleaning method includes the following steps:

[0077] S1. The first conveyor line 100 drives the parts to pass through the ultrasonic cleaning station 110 and the high-pressure spraying station 120 in sequence. The ultrasonic cleaning station 110 performs ultrasonic cleaning on the parts, and the high-pressure spraying station 120 performs high-pressure spraying on the parts.

[0078] S2. When the B part 420 is conveyed by the first conveyor line 100 to the fixed-point cleaning A station 210 of the second conveyor line 200, the second conveyor line 200 accelerates and conveys it alone, so that the B part 420 is conveyed to the fixed-point cleaning B station 220. At this time, the fixed-point cleaning A station 210 is vacant, and then multiple fixed-point cleaning B nozzles at the fixed-point cleaning B station 220 clean all the deep holes or deep grooves of the B part 420.

[0079] S3. After the B part 420 is cleaned at the fixed point, the next B part 420 is conveyed by the first conveyor line 100 to the fixed-point cleaning A station 210 of the second conveyor line 200, and the second conveyor line 200 synchronously conveys the B part 420 that has been cleaned at the fixed point to the pure water rinsing station 310 of the third conveyor line 300.

[0080] S4. The third conveyor line 300 drives the parts to pass through the pure water rinsing station 310, the air knife station 320 and the drying station 330 in sequence. The pure water rinsing station 310 rinses the parts with pure water, the air knife station 320 performs air knife treatment on the parts, and the drying station 330 dries the parts.

[0081] It should be noted that in the second conveyor line 200, since one of the fixed-point cleaning station A 210 or the fixed-point cleaning station B 220 must be in an idle state during operation, the induction sensor cannot sense the corresponding part at this time. Therefore, the corresponding fixed-point cleaning station is not started to prevent the idle fixed-point cleaning station from starting when there is no part, thus saving the cleaning cost.

[0082] Compared with the existing cleaning methods, the present invention can not only achieve the pipeline cleaning of part A 410 and part B 420, but also perform fixed-point cleaning for different parts. On the premise of meeting the pipeline cleaning, unnecessary cleaning stations can be skipped to achieve the purpose of cost reduction and efficiency improvement.

[0083] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. Double-station part cleaning assembly line, characterized in that, Including: A first conveyor line (100) is sequentially provided with an ultrasonic cleaning station (110) and a high-pressure spraying station (120) along the conveying direction; A third conveyor line (300) is sequentially provided with a pure water rinsing station (310), an air knife station (320) and a drying station (330) along the conveying direction; A second conveyor line (200) is respectively connected to the first conveyor line (100) and the third conveyor line (300). The first conveyor line (100), the second conveyor line (200) and the third conveyor line (300) all maintain the same conveying direction. The conveying speeds of the first conveyor line (100) and the third conveyor line (300) are the same, and the conveying speed of the second conveyor line (200) is adjustable. The second conveyor line (200) is sequentially provided with a fixed-point cleaning station A (210) and a fixed-point cleaning station B (220) along the conveying direction. The fixed-point cleaning station A (210) is provided with a plurality of fixed-point cleaning nozzles A, and the installation positions of all the fixed-point cleaning nozzles A respectively correspond one by one to all the deep hole positions of the A part (410). The fixed-point cleaning station B (220) is provided with a plurality of fixed-point cleaning nozzles B, and the installation positions of all the fixed-point cleaning nozzles B respectively correspond one by one to all the deep hole positions of the B part (420). When the B part (420) is conveyed to the fixed-point cleaning station A (210), the second conveyor line (200) accelerates and conveys alone, and conveys the B part (420) from the fixed-point cleaning station A (210) to the fixed-point cleaning station B (220). At this time, the fixed-point cleaning station A (210) is vacant.

2. The double-station part cleaning assembly line according to claim 1, wherein: Both the fixed-point cleaning station A (210) and the fixed-point cleaning station B (220) are provided with induction sensors, and the detection directions of the induction sensors point to the positions of the parts.

3. The two-station part cleaning production line according to claim 1, wherein: Each of the multiple stations is provided with an independent circulating filtration system.

4. The double-station part cleaning production line according to claim 1 or 3, characterized in that: Pneumatic gates (500) are provided between any two adjacent stations, and the pneumatic gates (500) are used to control the connection or disconnection between two adjacent stations.

5. The double-station part cleaning production line according to claim 1, characterized in that: The high-pressure spraying station (120) is provided with a spray pipe (121) controlled by a spray servo motor to move, and the moving direction of the spray pipe (121) is orthogonal to the conveying direction of the first conveyor line (100).

6. The double-station part cleaning production line according to claim 1, wherein: The number of the pure water rinsing stations (310) is two, and the two pure water rinsing stations (310) are sequentially arranged along the conveying direction of the third conveyor line (300).

7. The double-station part cleaning production line according to claim 6, wherein: Each of the pure water rinsing stations (310) is provided with a rinsing pipe controlled by a pure water servo motor to move, and the moving direction of the rinsing pipe is orthogonal to the conveying direction of the third conveyor line (300).

8. The double-station part cleaning production line according to claim 7, wherein: The moving ends of the two rinsing pipes both stop at the length center of the part, and the moving paths of the two rinsing pipes jointly cover the overall length of the part.

9. The double-station part cleaning production line according to claim 1, wherein: The air knife station (320) is provided with an air knife pipe controlled by an air knife servo motor to move, and the moving direction of the air knife pipe is orthogonal to the conveying direction of the third conveyor line (300).

10. A cleaning method, characterized in that, When applying the double-station part cleaning production line described in any one of claims 1 to 9, when part A (410) and part B (420) are arranged alternately along the conveying direction, the following steps are included: The first conveyor line (100) drives the parts to sequentially pass through the ultrasonic cleaning station (110) and the high-pressure spraying station (120). The ultrasonic cleaning station (110) performs ultrasonic cleaning on the parts, and the high-pressure spraying station (120) performs high-pressure spraying on the parts; When part A (410) is conveyed by the first conveyor line (100) to the fixed-point cleaning A station (210) of the second conveyor line (200), multiple fixed-point cleaning A nozzles at the fixed-point cleaning A station (210) clean all the deep holes of part A (410); When part B (420) is conveyed by the first conveyor line (100) to the fixed-point cleaning A station (210) of the second conveyor line (200), the second conveyor line (200) synchronously conveys the part A (410) that has undergone fixed-point cleaning to the fixed-point cleaning B station (220), and then the second conveyor line (200) accelerates and conveys alone, causing part B (420) to be conveyed to the fixed-point cleaning B station (220). The part A (410) that has undergone fixed-point cleaning is conveyed by the second conveyor line (200) to the pure water rinsing station (310) of the third conveyor line (300). After that, multiple fixed-point cleaning B nozzles at the fixed-point cleaning B station (220) clean all the deep holes of part B (420); The third conveyor line (300) drives the parts to sequentially pass through the pure water rinsing station (310), the air knife station (320), and the drying station (330). The pure water rinsing station (310) performs pure water rinsing on the parts, the air knife station (320) performs air knife treatment on the parts, and the drying station (330) dries the parts.

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