An automated production line and production method for treating the surface of a green body

Abstract

The present invention discloses an automatic production line for surface treatment of green bodies, which includes a green body trimming area, a green body buffer area, and a green body glazing area; the green body trimming area includes a green body loading station, a green body trimming station, and a green body reinspection station arranged in sequence; the green body buffer area includes a green body storage library and a return board conveyor line, the return board conveyor line is connected to a selection device, and front and rear green body conveyor lines with opposite conveying directions are arranged on both sides of the green body storage library; the green body glazing area includes a dust blowing and water spraying station, a pipeline glaze application station, a water outlet cloth arranging station, a basic glaze spraying station, and a green body bottom wiping station in sequence. The present invention also discloses a production method using the automatic production line for surface treatment of green bodies. Compared with the prior art, the technical solution of the present invention has the advantages of simple design, reasonable process, comprehensive design, and convenient operation, etc., and can effectively solve the technical problems existing in the surface treatment of green bodies in the prior art, as well as improve the production efficiency and product competitive advantage.

Description

Technical Field

[0001] The present invention relates to the technical field of surface treatment of sanitary ware blanks, and particularly relates to an automated production line and a production method for surface treatment of blanks. Background Art

[0002] After the blanks in the sanitary ware industry are formed, their surfaces need to be surface-treated and meet corresponding standard requirements before the blanks can be sintered. Therefore, the surface treatment process and process of the blanks will directly and indirectly affect the product quality and the scrap rate of the products after the blanks are sintered. The surface treatment of the blanks is a relatively important production link in the production of sanitary ware products.

[0003] However, each manufacturer has its own internal process standards and production process flows. If there are certain defects in the production standards and processes of the manufacturer, it will be relatively easy for cracks to appear after the blanks are sintered, and there will be defects such as missing or uneven glaze on the surface.

[0004] Therefore, setting up a relatively perfect automated production line for surface treatment of blanks and forming a relatively perfect production process are of great significance for reducing production costs and improving product quality. Summary of the Invention

[0005] The main purpose of the present invention is to propose an automated production line for surface treatment of blanks with simple design, reasonable process, comprehensive design and convenient operation. The present invention also proposes a production method using the automated production line for surface treatment of blanks, aiming to solve the technical problems existing in the surface treatment of blanks in the prior art and improve production efficiency and product competitive advantages.

[0006] To achieve the above object, an automated production line for surface treatment of blanks proposed by the present invention includes a blank trimming area, a blank buffer area and a blank glazing area;

[0007] The blank trimming area includes a blank loading station, a blank trimming station and a blank re-inspection station arranged in sequence. The blank loading station is connected to the blank trimming station through a first double-speed chain conveyor line, and the blank trimming station is connected to the blank re-inspection station through a second double-speed chain conveyor line; a selection device is provided between the blank re-inspection station and the blank buffer area. The selection device is connected to one end of a repair conveyor line, and the other end of the repair conveyor line is connected to the blank trimming station;

[0008] The blank buffer area includes a blank storage and a return conveyor line. The return conveyor line is connected to the selection device, and front blank conveyor lines and rear blank conveyor lines with opposite conveying directions are provided on both sides of the blank storage;

[0009] The body glazing area includes a dust blowing and water supply station, a pipe glazing station, a water distribution station, a basic glaze spraying station and a body bottom wiping station which are arranged in sequence. The end of the rear body conveyor line is connected with a shuttle machine, and the shuttle machine is connected to the dust blowing and water supply station through a synchronous belt. The pipe glazing station is provided with a pipe glazing device to glaze the body. The water distribution station is provided with a handling robot to transfer the body with the water distribution station to the glazing cabinet for spraying the basic glaze. The body sprayed with the basic glaze is transferred to the synchronous belt by the handling robot again and the bottom wiping work is completed at the body bottom wiping station. The body bottom wiping station is connected to one end of the third-speed conveyor line, and the other end of the third-speed conveyor line is connected to the elevator.

[0010] Preferably, the surface-processed blanks are loaded by a blank vehicle and stored in advance at the blank-on-line station, and the blank-on-line is completed by manual labor and the cooperation of a non-powered assisting arm.

[0011] Preferably, the blank re-inspection station marks unqualified blanks, and the marked unqualified blanks are returned to the blank repair station via the rework conveyor line for re-repair.

[0012] Preferably, the blank repairing area is provided with a plurality of blank repairing stations arranged in parallel, the blank repairing stations complete the repairing in a wet repairing manner, and each blank repairing station is provided with a lifting and translating machine for product screening and positioning.

[0013] Preferably, the first double-speed chain conveyor line is a double-layer conveyor line, the second double-speed chain conveyor line, the third double-speed conveyor line and the rework conveyor line are single-layer conveyor lines; the return board conveyor line is connected by a separate line body.

[0014] Preferably, the pipe glazing station adopts a linear pipe glazing machine and is provided with a water tank cover sub-line. Before the one-piece toilet blank enters the pipe glazing station, the water tank cover of the one-piece toilet blank is removed through the water tank cover sub-line. After the one-piece toilet blank body is pipe glazed, the water tank cover is removed from the water tank cover sub-line and put back into the one-piece toilet blank body.

[0015] Preferably, the synchronous belt comprises two sections of conveying lines separated along the conveying direction, a plurality of glazing spraying cabinets are provided at the separation position of the two sections of the conveying lines, and the plurality of glazing spraying cabinets are evenly arranged on both sides of the synchronous belt.

[0016] The present invention also proposes a production method for the automatic production line for surface treatment of blanks, comprising the following steps:

[0017] Step S1: the surface-processed blanks are loaded by the blank car and stored in advance at the blank-on-line station, and the surface-processed blanks are put on-line by manual and non-powered assist arms;

[0018] Step S2: The blanks on the line are conveyed to the blank repair station via the first double-speed chain conveyor line, and then the repair is completed by wet repair. The repaired blanks are conveyed to the blank re-inspection station via the second double-speed chain conveyor line for inspection, and the unqualified blanks will be marked; the unqualified blanks are transferred to the re-repair conveyor line via the selection device and conveyed to the blank repair station and repaired again;

[0019] Step S3: the qualified blanks after the blank repair are conveyed to the blank storage warehouse for buffering via the front blank conveying line, and after being buffered for a certain period of time, are conveyed to the connection machine via the rear blank conveying line;

[0020] Step S4: The transfer machine transfers the blank to the synchronous belt, and then to the dust blowing and water supply station. After the blank is manually dusted, the blank is glazed by the pipe glazing device provided in the pipe glazing station. When the blank after pipe glazing is at the water outlet station, the handling robot transfers the blank with the water outlet to the glazing single cabinet for spraying basic glaze. The blank sprayed with basic glaze is transferred to the synchronous belt by the handling robot again and the bottom glazing work is completed at the blank bottom wiping station.

[0021] Step S5: The bottom-polished blank is transported to the elevator via the third-time-speed conveyor line and transferred to the next production process.

[0022] The technical solution of the present invention has the following advantages over the prior art:

[0023] The technical solution of the present invention is that the automatic production line for blank surface treatment adopts a multi-station parallel wet repair method in the blank repair area to complete the repair, and also utilizes single-layer and double-layer blank feeding lines and return lines to form a mixed mixed line mode. The multi-station parallel layout can ensure daily production capacity and subsequent production line optimization, and can also uniformly arrange re-inspection and re-repair, greatly reducing the number of re-inspections and reducing the re-repair line, and the mixed line mode can save unnecessary return board layer line and improve the work efficiency of the return board layer. Among them, the re-repair line and the blank repair summary line are both single-layer lines, and the blank repair conveyor line before entering the blank repair is a double-layer line with a return board layer. In addition, there is a roller line for returning the board between the blank repair summary line and the blank repair conveyor line before the blank repair, so that the return board line can not pass through the blank repair area, reducing the return board line and related equipment.

[0024] The technical solution of the present invention adopts a wet repair process instead of a traditional dry repair process, which can not only overcome the dust generated in dry repair, but also effectively improve the efficiency of the repair process and better control the quality of the repair process. In addition, wet repair can reduce the use of equipment, such as dust removal cabinets and other dust-proof equipment, greatly reducing the equipment production cost of the product, while having the advantages of increasing production capacity and controlling the repair process.

[0025] The green body buffer area of the technical solution of the present invention includes a green body storage library and a return board line. Among them, the flat-layer roller line structure is adopted as the green body storage library, which can greatly meet the requirements of green body storage, and this method is simple and reliable. The return board conveyor line is connected by a separate line body, so that the green body return board layer can return the tooling board without entering the buffer library body, which can save equipment costs and improve the return board efficiency.

[0026] The docking method between the green body buffer library and the green body glazing area of the technical solution of the present invention is completed by using a connecting machine to connect the green body into the green body glazing area. The conveyor line in the green body glazing area uses a synchronous belt line as the conveyor line, so that the green body can be conveyed on the conveyor line without an external tooling board, and there are no problems such as the tooling boards colliding with each other. Moreover, the green body always remains relatively stationary with the belt line. Therefore, the green body is not likely to shift on the conveyor line and cause problems such as inaccurate positioning. Therefore, it is beneficial to the smooth progress of the glazing process in the glazing area, reduces production costs and improves production quality.

[0027] The green body glazing area of the technical solution of the present invention includes a dust blowing and water spraying station, a pipeline glazing station, a water outlet arranging station, a basic glaze spraying station and a green body bottom wiping station. After the green body comes out of the green body buffer library, the connecting machine connects the green body to the synchronous belt. The green body enters the dust blowing and water spraying station along with the synchronous belt for dust blowing and water spraying. After completing the dust blowing and water spraying, the green body enters the pipeline glazing device for glazing. After completing the pipeline glazing, then the green body starts to arrange the water outlets. The green body after arranging the water outlets is transported by a handling robot to a glazing single cabinet for spraying the basic glaze. After the green body is sprayed with the basic glaze, it is transported by the handling robot to the belt line again for the green body bottom wiping action. Finally, the green body is sent to the multiple chain by the connecting machine to complete the green body glazing.

[0028] The technical solution of the present invention adopts an on-line pipeline glazing plus a combination of a sub-line for taking and placing the water tank cover for the green body pipeline glazing, which can overcome multiple problems such as pipeline glaze accumulation and glaze leakage in the flipping pipeline glazing machine, and the glazing method is simple, without the need for an additional handling robot, saving production costs and improving production efficiency. By adopting the form of one handling robot with four glazing single cabinets, the glazing efficiency is high, the glazing is flexible, and the glaze under the glazing will not dirty the conveyor line, which can improve the service life of the conveyor line. In addition, the green body bottom wiping machine is divided into two types: an off-line bottom wiping machine and an on-line bottom wiping machine. The two bottom wiping machines are used in combination to complete the green body bottom wiping, which is more convenient than manual bottom wiping and can save the labor of one work station. Brief Description of the Drawings

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on the structures shown in these drawings.

[0030] Figure 1 It is a layout plan of the automatic production line for surface treatment of the green body in the embodiment of the present invention;

[0031] Figure 2 It is a layout plan of the green body trimming area in the embodiment of the present invention;

[0032] Figure 3 It is a layout plan of the green body buffer area in the embodiment of the present invention;

[0033] Figure 4 It is a layout plan of the green body glazing area in the embodiment of the present invention;

[0034] Figure 5 It is a flowchart of the production method in the embodiment of the present invention.

[0035] Explanation of the reference numerals in the drawings:

[0036] Label Name Label Name 1 Green body trimming area 3 Green body glazing area 11 Green body loading station 31 Dusting and water supply station 12 Green body trimming station 32 Pipe glaze application station 13 Green body reinspection station 33 Water outlet layout station 14 Power-free assist arm 34 Base glaze spraying station 15 First double-speed chain conveyor line 341 Handling robot 151 Return board machine 342 Glazing single cabinet 152 Tooling board 35 Green body bottom wiping station 153 Power-free transfer machine 351 Off-line bottom wiping machine 16 Second double-speed chain conveyor line 352 Reinspection station 17 Selection device 353 Linear bottom wiping machine 171 Lifting transfer machine 36 Synchronous belt 18 Repair conveyor line 37 Third triple-speed conveyor line 2 Green body buffer area 4 Green body 21 Green body storage 41 Green body cart 22 Return board conveyor line 5 Connector 23 Front green body conveyor line 6 Return board machine 24 Rear green body conveyor line 7 Auxiliary line for taking water tank cover

[0037] The realization, functional features and advantages of the object of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings. Detailed implementation manners

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0039] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0040] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments may be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0041] The present invention provides an automated production line for surface treatment of green bodies.

[0042] Please refer to Figures 1 to 4 , the automated production line for surface treatment of green bodies in the embodiments of the present invention mainly includes a green body trimming area 1, a green body buffer area 2, and a green body glazing area 3.

[0043] Please refer to Figure 2 , wherein the green body trimming area 1 of this embodiment includes a green body loading station 11, a green body trimming station 12, and a green body re-inspection station 13. At the green body loading station 11, the green body 4 after preliminary extrusion molding is loaded by the green body cart 41 and pre-stored at the green body loading station 11. In order to save labor and improve production efficiency, a non-powered assist arm 14 is provided at the green body loading station 11 in this embodiment. By combining manual labor with the non-powered assist arm 14, the green body 4 can be quickly and conveniently loaded onto the line. Using the non-powered assist arm 14 can greatly save the physical strength of workers and improve the work efficiency of workers, and the non-powered assist arm 14 can be faster in rhythm and lower in production cost than pure mechanical blank loading.

[0044] After the green body 4 is loaded onto the line, the green body 4 is conveyed from the green body loading station 11 to the green body trimming station 12 through the first double-speed chain conveyor line 15. At this time, the surface of the green body is trimmed manually. The trimmed green body is continuously conveyed forward through the second double-speed chain conveyor line 16 and conveyed to the green body re-inspection station 13. Then, unqualified green bodies are detected manually, and the unqualified green bodies need to be marked on the surface. In addition, a selection device 17 is provided between the green body re-inspection station 13 and the green body buffer area 2. The marked unqualified green bodies are conveyed to the repair conveyor line 18 through the selection device 17, and then conveyed back to the green body trimming station 12 by the repair conveyor line 18 for re-trimming.

[0045] Please refer to Figure 2Preferably, the blank repairing station 12 of the present embodiment adopts a multi-station parallel wet repairing method to complete the repairing. The multi-station parallel repairing can not only ensure that the production capacity meets the standard, but also can uniformly arrange re-inspection and re-repair, reduce the number of re-inspection people and reduce the amount of re-repair. In addition, the wet repair method can also reduce dust generation and effectively reduce the cost of repairing and improve the efficiency of repairing.

[0046] See also Figure 3 The blank buffer area 2 of this embodiment includes a blank storage warehouse 21 and a return plate conveyor line 22. The return plate conveyor line is connected to the selection device 17. The front blank conveyor line 23 and the rear blank conveyor line 24 with opposite conveying directions are arranged on both sides of the blank storage warehouse 21. Since the blank storage warehouse 21 requires a small amount of blanks, a flat roller line warehouse can be used for blank storage. This method is simple and reliable and can conveniently complete the blank caching of the blank buffer area 2 without the need to install external equipment. At the same time, the return plate conveyor line 22 is connected by a separate line body, so that the return plate conveyor line 22 does not need to enter the blank storage warehouse 21, thereby saving equipment costs and improving the efficiency of returning plates.

[0047] See also Figure 4 The body glazing area 3 of this embodiment includes a dust blowing and water supply station 31, a pipeline glazing station 32, a water distribution station 33, a basic glaze spraying station 34 and a body bottom wiping station 35. The end of the rear body conveying line 24 is connected to the shuttle machine 5, wherein the body is transferred from the rear body conveying line 24 to the shuttle machine 5, and then the shuttle machine 5 is transferred to the synchronous belt 36. The body 4 enters the dust blowing and water supply station 31 along with the synchronous belt line 36 for dust blowing and water supply. After the dust blowing and water supply are completed, the body 4 enters the pipeline glazing device of the pipeline glazing station 32 for glazing. After the pipeline glazing is completed, the body 4 will be glazed with the water distribution station. When the body 4 after the water distribution station is transported by the handling robot 341 to the glazing single cabinet 342 for spraying basic glaze, after the base glaze is sprayed, the body 4 is transported again to the synchronous belt 36 by the handling robot 341 for the body bottom wiping operation. Finally, the body 4 is transferred to the third speed conveying line 37 and the body glazing work is completed.

[0048] Among them, the pipe glazing station 32 in this embodiment adopts an online pipe glazing machine, and is also provided with a water tank cover sub-line 7. When the blank 4 is a one-piece toilet structure, the one-piece toilet body needs to remove the water tank cover on the one-piece toilet blank through the water tank cover sub-line 7 before entering the pipe glazing station 32, and the one-piece toilet blank body is pipe-glazed. After the glazing is completed, the water tank cover is removed from the water tank cover sub-line 7 and placed back to the original position of the one-piece toilet blank body.

[0049] In addition, the synchronous belt 36 of this embodiment includes two conveying lines separated along the conveying direction. At the separating position of the two conveying lines, a number of single glazing cabinets 342 are provided. The multiple single glazing cabinets 342 are arranged on both sides of the synchronous belt 36 in a uniform manner. This can prevent the surface of the synchronous belt 36 from being soiled during the glazing process, and can also improve the glazing rhythm of the glazing line to improve production efficiency. After the base glaze is sprayed on the green body, the bottom of the green body can be wiped off offline by the handling robot 341.

[0050] In addition, the first double-speed chain conveying line 15 of this embodiment is a double-layer conveying line, and the second double-speed chain conveying line 16, the third triple-speed conveying line 37, and the repair conveying line 18 are single-layer conveying lines; the return board conveying line 18 is connected by a separate line body, which can avoid the full use of double-layer conveying lines, thus saving unnecessary redundant return board lines, reducing equipment costs, and improving the return board efficiency.

[0051] Please refer to Figures 1 to 5 , the present invention also proposes a production method for an automatic production line for green body surface treatment,

[0052] After the automatic production line for green body surface treatment of this embodiment is correctly and reasonably installed and debugged, it can be used normally. After the green body 4 is quickly dried in the previous process, it is transferred to the green body loading station 11 by the green body cart 41. The loading of the green body 4 is completed by manual and non-powered assist arm 14. Before the green body 4 is loaded, the return board machine 151 jacks up from the bottom layer and sends up an empty tooling board 152, and then the operator loads the green body 4 and places it on the tooling board 152. The tooling board 152 with the green body 4 moves along the first double-speed chain conveying line 15 to the green body trimming station 12, and the first double-speed conveying line 15 is equipped with a non-powered transfer machine 153 in front of the green body trimming station 12. The operator for trimming pulls the green body 4 into the green body trimming station 12 and completes the trimming in a wet trimming manner.

[0053] After trimming is completed, the operator pushes out the green body 4 and converges it on the second double-speed chain conveying line 16 for summarization. A green body re-inspection station 13 can also be set at the rear position of the second double-speed chain conveying line 16 to uniformly re-inspect and position the green body, which can facilitate the secondary positioning of unqualified green bodies in the follow-up. When the green body 4 is re-inspected and positioned at the green body re-inspection station 13, the green body is identified and screened by the lifting transfer machine 171. Among them, the unqualified green bodies are sent into the repair conveying line 18 through the selection device 17 and are conveyed back to the green body trimming station 12 for re-repair, while the qualified green bodies are sent into the green body storage library 21 for caching.

[0054] When the blanks 4 are sent from the blank repairing area 1 to the blank buffer area 2, the blanks 4 are sent to the front blank conveying line 23 of the roller line structure at the front of the blank storage 21 by the lifting and translating machine 171, and a whole row of large lifting and translating machines are installed on the front blank conveying line 23. Under the action of the translating machines, the blanks 4 can be entered into the blank storage 21 in a row at one time for blank buffering. The blanks 4 are taken out of the blank storage 21 through the same steps, which will not be described in detail here.

[0055] After being shipped out of the warehouse, the blank 4 is transferred to the blank injection area 3 through the connecting machine 5, and the empty tooling plate 152 is brought to the returning plate layer by the returning plate machine 6 for returning the plate. After the connection, the blank 4 first arrives at the dust blowing and water supply station 31 for dust blowing and secondary positioning of the blank 4, and then the blank 4 continues to move forward, reaches the water tank cover sub-line 7 to perform the water tank cover action, and then continues forward to the pipe glazing machine at the pipe glazing station 32 for pipe glazing action. After the pipe glazing is completed, the water tank cover is removed from the water tank cover sub-line 7 and placed back to the original position, and then the blank 4 completes the water outlet work at the water outlet station 33.

[0056] The blank 4 continues to be transported forward along the synchronous belt 36 until the transport robot 341 transports the blank 4 to the glazing cabinet 342 for the basic glaze glazing action. After the basic glazing is completed, the transport robot 341 moves the blank 4 to the off-line bottom rubbing machine 351 for off-line bottom rubbing action. After the transport robot 341 completes the bottom rubbing action, it places the blank on the rear section of the synchronous belt 36, and then a re-inspection station 352 is reserved, and it is determined whether personnel need to be arranged according to the situation. At the same time, the blank 4 moves to the online bottom rubbing machine 353 on the synchronous belt 36 for online bottom rubbing, completing the complete bottom rubbing action of the blank. Finally, the shuttle machine 5 puts the blank 4 back on the third-speed conveyor line 37, and the third-speed conveyor line 37 transports the blank 4 to the elevator, completing all the processes of the entire blank surface treatment automatic production line system.

[0057] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An automated production line for surface treatment of green bodies, It is characterized in that The blank repairing area includes a blank repairing area, a blank buffer area and a blank glazing area; the blank repairing area includes a blank on-line station, a blank repairing station and a blank re-inspection station which are arranged in sequence, the blank on-line station is connected to the blank repairing station through a first double-speed chain conveyor line, and the blank repairing station is connected to the blank re-inspection station through a second double-speed chain conveyor line; a selection device is provided between the blank re-inspection station and the blank buffer area, the selection device is connected to one end of the rework conveyor line, and the other end of the rework conveyor line is connected to the blank repairing station; the blank buffer area includes a blank storage warehouse and a return plate conveyor line, the return plate conveyor line is connected to the selection device, and both sides of the blank storage warehouse are provided with a front blank conveyor line and a rear blank conveyor line with opposite conveying directions. The blank glazing area includes a dust blowing and water supply station, a pipe glazing station, a water outlet station, a basic glaze spraying station and a blank bottom wiping station, which are arranged in sequence. The end of the rear blank conveyor line is connected to a shuttle machine, and the shuttle machine is connected to the dust blowing and water supply station through a synchronous belt. The pipe glazing station is provided with a pipe glazing device to glaze the blank. The water outlet station is provided with a handling robot to transfer the blank with the water outlet to the glazing single cabinet for spraying the basic glaze. The blank sprayed with the basic glaze is transferred to the synchronous belt by the handling robot again and the bottom wiping work is completed at the blank bottom wiping station. The blank bottom wiping station is connected to one end of the third-times-speed conveyor line, and the other end of the third-times-speed conveyor line is connected to the elevator; The blank repairing area is provided with a plurality of blank repairing stations arranged in parallel, and the blank repairing stations complete the repairing in a wet repairing manner. Each blank repairing station is provided with a lifting and translating machine for product screening and positioning.

2. The automatic production line for surface treatment of green bodies according to claim 1, It is characterized in that The surface-processed blanks are loaded by the blank vehicle and stored in advance at the blank on-line station, and the blank on-line is completed by manual labor and the unpowered assisting arm.

3. The automatic production line for surface treatment of blanks according to claim 1, It is characterized in that The blank re-inspection station marks unqualified blanks, and the marked unqualified blanks are returned to the blank repair station via the re-repair conveyor line for re-repair.

4. The automatic production line for surface treatment of green bodies according to claim 1, It is characterized in that The first double-speed chain conveyor line is a double-layer conveyor line, the second double-speed chain conveyor line, the third double-speed conveyor line and the rework conveyor line are single-layer conveyor lines; the return board conveyor line is connected by a separate line body.

5. The automatic production line for surface treatment of green bodies according to claim 1, It is characterized in that The pipe glazing station adopts a linear pipe glazing machine and is provided with a water tank cover auxiliary line. Before the one-piece toilet blank enters the pipe glazing station, the water tank cover of the one-piece toilet blank is removed through the water tank cover auxiliary line. After the one-piece toilet blank body is pipe glazed, the water tank cover is removed from the water tank cover auxiliary line and put back into the one-piece toilet blank body.

6. The automatic production line for surface treatment of blanks according to claim 1, It is characterized in that The synchronous belt comprises two sections of conveying lines which are separated and arranged along the conveying direction. A plurality of glazing spraying cabinets are arranged at the separation position of the two sections of the conveying lines. The plurality of glazing spraying cabinets are evenly arranged on both sides of the synchronous belt.

7. A production method for the automatic production line for surface treatment of blanks as claimed in claim 1, It is characterized in that The following steps are involved: Step S1: the surface-processed blanks are loaded by the blank car and stored in advance at the blank-on-line station, and the surface-processed blanks are put on-line by manual and non-powered assist arms; Step S2: The blanks on the line are conveyed to the blank repair station via the first double-speed chain conveyor line, and then the repair is completed by wet repair. The repaired blanks are conveyed to the blank re-inspection station via the second double-speed chain conveyor line for inspection, and the unqualified blanks will be marked; the unqualified blanks are transferred to the re-repair conveyor line via the selection device and conveyed to the blank repair station and repaired again; Step S3: the qualified blanks after the blank repair are conveyed to the blank storage warehouse for buffering via the front blank conveying line, and after being buffered for a certain period of time, are conveyed to the connection machine via the rear blank conveying line; Step S4: The transfer machine transfers the blank to the synchronous belt, and then to the dust blowing and water supply station. After the blank is manually dusted, the blank is glazed by the pipe glazing device provided in the pipe glazing station. When the blank after pipe glazing is at the water outlet station, the handling robot transfers the blank with the water outlet to the glazing single cabinet for spraying basic glaze. The blank sprayed with basic glaze is transferred to the synchronous belt by the handling robot again and the bottom glazing work is completed at the blank bottom wiping station. Step S5: The bottom-polished blank is transported to the elevator via the third-time-speed conveyor line and transferred to the next production process.

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