Low-carbon environment-friendly double-coating single-baking process and system

Abstract

The application discloses a low-carbon and environment-friendly double-coating and one-drying process, which comprises the following steps: conveying a workpiece to the lower side of a first coating machine through a synchronous conveying mechanism, performing first coating to obtain a primary workpiece; continuously feeding the primary workpiece to the lower side of a second coating machine, performing second coating, the pattern of the first coating being completely consistent with that of the second coating, so that air bubbles and black marks on the primary workpiece are eliminated, and a secondary workpiece with stronger overall performance is obtained; detecting a plurality of secondary workpieces, and drying the secondary workpieces that pass the detection; and a system for the low-carbon and environment-friendly double-coating and one-drying process. The application realizes the continuous movement of the workpiece on the double-coating coating line, thereby improving the efficiency of coating of the workpiece twice into the coating machine, reducing the difficulty of register in the secondary coating process, and improving the production efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of coating technology, in particular to a low-carbon and environmentally friendly double-coating and single-baking process and system. BACKGROUND

[0002] Currently, the process flow used in the industry is a single roller coating and single baking process. This process has many quality problems in the market feedback. The most prominent problem is that the pattern after coating has poor hiding power and poor leveling. Moreover, due to the poor leveling, the pattern after the first coating is easily blackened, and due to the thin thickness of the pattern, bubbles are easily generated during subsequent baking, resulting in a high rate of defective products.

[0003] In the prior art, to solve this problem, the same process needs to be repeated twice, that is, the product is put into the coating roller multiple times for multiple roller coating. However, in actual production, multiple coating will result in low production efficiency, and accurate alignment is required for the second coating. If the alignment is not accurate, it will result in a large waste rate and an increase in the rate of defective products. SUMMARY

[0004] The purpose of the present application is to provide a low-carbon and environmentally friendly double-coating and single-baking process and system to solve the technical problems of difficult continuous coating and difficult alignment of workpieces in the prior art.

[0005] To solve the above technical problems, the present application specifically provides the following technical solutions:

[0006] The present application provides a low-carbon and environmentally friendly double-coating and single-baking process, comprising the following steps:

[0007] The workpiece is conveyed to the lower side of the first coating machine by a synchronous conveying mechanism for the first coating to obtain a primary workpiece;

[0008] The primary workpiece is continuously fed to the lower side of the second coating machine for the second coating. The pattern of the first coating is completely consistent with that of the second coating to eliminate bubbles and blackening on the primary workpiece and obtain a secondary workpiece with stronger overall performance;

[0009] The secondary workpieces are detected, and the secondary workpieces that pass the detection are dried.

[0010] The present application also provides a system for a low-carbon and environmentally friendly double-coating and single-baking process, comprising:

[0011] A feeding part, a first coating machine, a second coating machine, and a drying table are sequentially arranged from upstream to downstream of the process. The first coating machine is used for the first coating, the second coating machine is used for the second coating, and the drying table is used for drying the coated workpiece.

[0012] The feeding part, the coating machine one, the coating machine two and the drying table are connected through a synchronous conveying mechanism, the synchronous conveying mechanism drives the workpiece of the feeding part to pass through the coating machine one, the coating machine two in sequence for coating, and drives the secondary workpiece after coating into the drying table for drying;

[0013] The bottom of the synchronous conveying mechanism is provided with a edge correction assembly, the edge correction assembly can pass through the synchronous conveying mechanism and is attached to both sides of the conveyed workpiece, thereby preventing the workpiece from shaking on the synchronous conveying mechanism.

[0014] As a preferred scheme of the present application, the synchronous conveying mechanism comprises a frame body and a plurality of conveying belts installed between the feeding part, the coating machine one, the coating machine two and the drying table, the conveying belts are arranged side by side below the coating machine one and the coating machine two, and gaps for the edge correction assembly to pass through are arranged between the conveying belts;

[0015] The frame body is arranged at both ends of the conveying belts, and a driving group is arranged on the frame body;

[0016] The conveying belts are connected with the driving group, and the conveying belts are driven to rotate synchronously by the driving group to complete the synchronous conveying of the workpiece.

[0017] As a preferred scheme of the present application, the driving group comprises a main motor, the main motor is connected with a main transmission shaft, the length of the main transmission shaft extends from the feeding part to the drying table, and the rotation direction of the main motor is consistent with that of the main transmission shaft;

[0018] The main transmission shaft is connected with a slave transmission shaft through a chain and drives the slave transmission shaft to rotate, the rotation direction of the slave transmission shaft is perpendicular to that of the main transmission shaft, the conveying belts are installed on the slave transmission shaft, and the conveying belts rotate synchronously with the rotation of the slave transmission shaft;

[0019] The main transmission shaft and the slave transmission shaft are both installed on the frame body and can rotate on the frame body.

[0020] As a preferred scheme of the present application, a plurality of fixed nodes are arranged on the slave transmission shaft, the conveying belts are installed on the fixed nodes, and the conveying belts correspond to the fixed nodes one by one.

[0021] As a preferred scheme of the present application, a plurality of connection nodes are arranged on the main transmission shaft, and the chain is installed on the connection nodes.

[0022] As a preferred scheme of the present application, the bottom of the conveying belt strip is provided with a rotating bottom roller, which is arranged in close contact with the bottom of the conveying belt strip, is installed on the frame body and rotates on the frame body under the drive of the main transmission shaft, and is connected with the main transmission shaft through the chain.

[0023] As a preferred scheme of the present application, the edge sticking correction assembly comprises a plurality of bases arranged at the bottom of the conveying belt strip, and an edge sticking block is clamped on each base and can pass through the gap between the conveying belt strips from bottom to top, and the edge sticking block is used for sticking to the edge of the workpiece and controlling the horizontal stability of the workpiece during conveying.

[0024] As a preferred scheme of the present application, a roller is rotatably arranged on the edge sticking block, and the roller can roll on the edge sticking block and stick to the edge of the workpiece during use.

[0025] As a preferred scheme of the present application, a main control cabinet is further included, which is in communication connection with the coating rubber roller of the first coating machine, the coating rubber roller of the second coating machine and the main motor respectively, and can control the rotating speed of the coating rubber roller of the first coating machine, the coating rubber roller of the second coating machine and the main motor respectively, so as to control the coating speed and conveying speed of the workpiece.

[0026] Compared with the prior art, the present application has the following beneficial effects:

[0027] The present application improves the coating thickness of the workpiece through multiple continuous coating, realizes continuous production of double coating and one baking, improves production efficiency, does not need to perform multiple register matching, reduces waste discharge rate, and improves product coating efficiency through synchronous conveying mechanism for central control, is low in carbon, environmentally friendly, green and energy-saving, and easy to operate.

[0028] The present application performs real-time position correction on the workpiece transported on the conveying belt through continuous edge sticking correction on the continuous production line, so that the workpiece is in the correct position required by the process, and the continuous conveying of the workpiece during transportation is difficult to guarantee, so that the accuracy of the second coating is more controlled.

[0029] The present application only controls the forward and backward movement state of the workpiece and the coating state of the coating machine, realizes the continuous movement of the workpiece on the double coating line, improves the efficiency of the workpiece entering the coating machine for coating twice, reduces the difficulty of register matching in the secondary coating process, and improves the production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to make the technical solutions in the embodiments of the present application or the prior art clearer, the accompanying drawings needed in the description of the embodiments or the prior art will be briefly introduced. Obviously, the accompanying drawings in the following description are only exemplary and, for those ordinarily skilled in the art, other drawings can be obtained from the provided drawings without any creative effort.

[0031] Figure 1 A flowchart of a low-carbon and environmentally friendly double-coating and one-baking process is provided for the present application.

[0032] Figure 2 A structural diagram of a system for performing a low-carbon and environmentally friendly double-coating and one-baking process is provided for the present application.

[0033] Figure 3 A structural diagram of a driving group is provided for the present application. Figure 2

[0034] A structural diagram of a hem correcting assembly is provided for the present application. Figure 4 Figure 2 A structural diagram of a hem correcting assembly is provided for the present application.

[0035] The reference numbers in the drawings represent the following respectively:

[0036] 1 - feeding part; 2 - first coating machine; 3 - second coating machine; 4 - synchronous conveying mechanism; 5 - hem correcting assembly; 6 - fixed node; 7 - connecting node; 8 - rotating bottom roller; 9 - main control cabinet; 10 - drying table.

[0037] 401 - conveying belt strip; 402 - frame body; 403 - driving group.

[0038] 4031 - main motor; 4032 - main transmission shaft; 4033 - chain; 4034 - slave transmission shaft.

[0039] 501 - base; 502 - hem block; 503 - roller. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those ordinarily skilled in the art without any creative effort belong to the scope of protection of the present application.

[0041] As shown in the drawings, the present application provides a low-carbon and environmentally friendly double-coating and one-baking process, which comprises the following steps: Figure 1

[0042] ​​The workpiece is conveyed to the lower side of the coating machine 2 by the synchronous conveying mechanism, and the coating roller performs the first coating on the workpiece to obtain a primary workpiece;

[0043] The primary workpiece is continuously conveyed to the lower side of the coating machine 3, and the coating roller performs the second coating on the primary workpiece, the patterns of the first coating and the second coating are completely consistent, so as to eliminate the bubbles and black smearing phenomenon of the primary workpiece after the first coating, increase the hiding power of the pattern, and obtain a secondary workpiece with stronger overall performance.

[0044] The secondary workpieces are detected, and the secondary workpieces that pass the detection are dried.

[0045] The present application increases the coating thickness through continuous secondary coating, improves the hiding power, reduces the bubbles and black smearing phenomenon of the workpiece in the coating process, and the two coatings are centrally controlled by the synchronous conveying mechanism, which improves the coating efficiency of the product, is low-carbon, environmentally friendly, green and energy-saving, and easy to operate.

[0046] Further, as shown in Figures 2 to 4 The present application also provides a system for performing the above low-carbon and environmentally friendly double-coating and drying process, which comprises a feeding part 1, a coating machine 2, a coating machine 3, a drying table 10, and a central control system for controlling the actions of the coating machine 2 and the coating machine 3 and the conveying of the workpiece.

[0047] The feeding part 1, the coating machine 2, the coating machine 3 and the drying table 10 are sequentially arranged from the upstream to the downstream of the process, and are connected by the synchronous conveying mechanism 4.

[0048] The feeding part 1 is used for continuously feeding the workpiece, so that the workpiece is sequentially fed to the synchronous conveying mechanism 4, and the synchronous conveying mechanism 4 conveys the workpiece to the coating machine 2.

[0049] The coating machine 2 is provided with a coating main machine and a coating roller, which can perform the first coating on the workpiece, and the coating process starts with the entry of the initial workpiece, and ends when the initial workpiece is coated in the coating machine 2, the initial workpiece becomes a primary workpiece, and the initial workpiece located upstream is continuously fed into the coating machine 2 for coating.

[0050] The structure of the coating machine 3 is almost identical to that of the coating machine 2. The coating machine 3 is provided with a coating main machine and a coating rubber roller. The coating machine 3 can perform second coating on the primary workpiece which has been coated once. At this time, the entering time of the primary workpiece needs to be paid special attention to. It must be ensured that the pattern coated after entering is completely consistent with that coated in the first coating. The entering time of the primary workpiece can be controlled by the synchronous conveying mechanism 4. When the primary workpiece is coated in the coating machine 3, the second coating is completed, and the primary workpiece becomes a secondary workpiece.

[0051] The drying table 10 is used for drying the secondary workpiece, so that the coating layer on the secondary workpiece becomes hard, that is, the above-mentioned double-coating and drying process is completed. Before drying, the workpiece also needs to be detected to prevent unqualified workpieces from entering the drying table 10.

[0052] In the whole process, the system needs to ensure the accuracy of the pattern in the two coating processes. This process can be realized by accurate synchronous conveying. At the same time, it is necessary to ensure that the workpiece only moves in the conveying direction and does not move in the horizontal direction during conveying.

[0053] The synchronous conveying mechanism 4 drives the workpiece of the feeding part 1 to pass through the coating machine 2 and the coating machine 3 in turn for coating, and drives the coated secondary workpiece to enter the drying table 10 for drying. The bottom of the synchronous conveying mechanism 4 is provided with a edge correction assembly 5. The edge correction assembly 5 can pass through the synchronous conveying mechanism 4 and contact the workpiece on the synchronous conveying mechanism 4, so as to prevent the workpiece from shaking on the synchronous conveying mechanism 4.

[0054] The prior art can correct the position of the workpiece transported on the conveying belt, so that the workpiece is in the correct position required by the process. However, most position correction devices cannot accurately control the position of a single workpiece, and it is difficult to ensure the continuous conveying of the workpiece during transportation. For the double-coating process, the interruption of continuous conveying will cause the second coating to be difficult to accurately perform.

[0055] In order to simply control the position of the workpiece continuously conveyed on the synchronous conveying mechanism 4, the synchronous conveying mechanism 4 includes a frame body 402 and a plurality of conveying belt strips 401 installed between the feeding part 1, the coating machine 2, the coating machine 3 and the drying table 10. The frame body 402 is arranged at both ends of the conveying belt strip 401, and the frame body 402 is provided with a driving group 403.

[0056] The conveying belt strip 401 is connected with the driving group 403. The conveying belt strip 401 is driven by the driving group 403 to rotate synchronously, thereby completing the synchronous conveying of the workpiece.

[0057] The conveying belt strips 401 are arranged in parallel below the coating machine 2 and the coating machine 3, and gaps for the edge correction assembly 5 to pass through are arranged between the conveying belt strips 401. The edge correction assembly 5 positions the workpiece on the conveying belt strips 401 by passing through the conveying belt strips 401, and the positioning process is simple, and the positioning mainly prevents the workpiece from moving to the two sides of the conveying direction, so that there is only one movement direction in the continuous conveying process of the workpiece.

[0058] When the workpiece has only one movement direction, the coating time of the coating machine 3 and the conveying speed of the conveying belt strips 401 are controlled, so that the accurate control of the primary workpiece into the coating machine 3 is realized, the efficiency is improved, and the operation is convenient.

[0059] The conveying belt strips 401 are arranged in parallel below the coating machine 2 and the coating machine 3, and gaps for the edge correction assembly 5 to pass through are arranged between the conveying belt strips 401. The edge correction assembly 5 positions the workpiece on the conveying belt strips 401 by passing through the conveying belt strips 401, and the positioning process is simple, and the positioning mainly prevents the workpiece from moving to the two sides of the conveying direction, so that there is only one movement direction in the continuous conveying process of the workpiece. Figure 2 The main transmission shaft 4032 is connected with a slave transmission shaft 4034 through a chain 4033 and drives the slave transmission shaft 4034 to rotate, and the rotating direction of the slave transmission shaft 4034 is perpendicular to the rotating direction of the main transmission shaft 4032.

[0060] The main transmission shaft 4032 is connected with a slave transmission shaft 4034 through a chain 4033 and drives the slave transmission shaft 4034 to rotate, and the rotating direction of the slave transmission shaft 4034 is perpendicular to the rotating direction of the main transmission shaft 4032.

[0061] The main transmission shaft 4032 and the slave transmission shaft 4034 are installed on the frame body 402 and can rotate on the frame body 402.

[0062] In the rotating process of the conveying belt strips 401, although the control difficulty of the conveying belt strips 401 is great, the embodiment can control the synchronous conveying process in the whole synchronous conveying process through one main motor 4031, and the control difficulty of the conveying belt strips 401 is reduced, the operation difficulty is reduced, and the cost is reduced.

[0063] The simple control and simple operation mentioned in the present application are further described below.

[0064] The whole control system includes a main control cabinet 9, the coating machine 2, the coating machine 3 and a main motor 4031, and the main control cabinet 9 is in communication connection with the coating rubber roller of the coating machine 2, the coating rubber roller of the coating machine 3 and the main motor 4031. The main function of the main control cabinet 9 is to control the rotating speed of the coating rubber roller of the coating machine 2, the coating rubber roller of the coating machine 3 and the main motor 4031 respectively.

[0065] In the embodiment, since the position control of the workpiece is improved, the position state of the workpiece is affected by and only by the main motor 4031, and thus the rotation state of the main motor 4031 is controlled, that is, the position and moving speed of the workpiece are controlled.

[0066] When the position and moving speed of the workpiece are completely controlled, the relative position and coating speed between the coating machine 2, the coating machine 3 and the workpiece are designed, so that the fully automatic double-coating process is realized, the control process is simple and easy to operate.

[0067] The specific operation and control process of the embodiment is obtained through on-site debugging, and the parameters change with the change of the size of the workpiece, but the operation process is simple and easy to operate.

[0068] In order to fix the rotation of the conveying belt strip 401, a plurality of fixing nodes 6 are arranged on the transmission shaft 4034, the conveying belt strip 401 is installed on the fixing nodes 6, and the conveying belt strip 401 corresponds to the fixing nodes 6 one by one.

[0069] A plurality of connecting nodes 7 are arranged on the main transmission shaft 4032, and the chain 4033 is installed on the connecting nodes 7. The bottom of the conveying belt strip 401 is provided with a rotating bottom roller 8, and the rotating bottom roller 8 is mainly used for protecting the conveying belt strip 401.

[0070] The rotating bottom roller 8 is arranged on the bottom of the conveying belt strip 401, and the rotating bottom roller 8 is installed on the frame body 402 and rotates on the frame body 402 under the drive of the main transmission shaft 4032. The rotating bottom roller 8 is connected with the main transmission shaft 4032 through the chain 4033.

[0071] The edge sticking correction assembly 5 includes a plurality of bases 501 arranged on the bottom of the conveying belt strip 401, and the edge sticking blocks 502 are clamped on the bases 501. The edge sticking blocks 502 can pass through the gap between the conveying belt strips 401 from bottom to top, and the edge sticking blocks 502 are used for sticking to the edge of the workpiece and controlling the stability of the workpiece in the horizontal direction during the conveying process.

[0072] The cylinder 503 is rotatably arranged on the edge sticking block 502, and the cylinder 503 can roll on the edge sticking block 502. In use, the cylinder 503 sticks to the edge of the workpiece, and the cylinder 503 is rubbed and rotated when the workpiece passes. The cylinder 503 is rubbed to better realize clamping of the workpiece, prevent the workpiece from moving left and right, and the rotation of the cylinder 503 can prevent the displacement of the workpiece from being affected.

[0073] Through the low-carbon and environment-friendly double-coating and baking process and system, the workpiece can realize continuous movement on the double-coating coating line, so as to improve the efficiency of the workpiece entering the coating machine twice for coating, reduce the difficulty of register in the secondary coating process, and improve the production efficiency.

[0074] The above embodiments are only exemplary embodiments of the present application, and are not intended to limit the present application. The scope of protection of the present application is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements to the present application within the spirit and protection scope of the present application, and such modifications or equivalent replacements should also be considered to fall within the protection scope of the present application.

Claims

1. A low carbon environmental protection double-coating and single-baking system, characterized in that, The application relates to a synchronous conveying mechanism for a coating machine. The synchronous conveying mechanism is composed of a feeding part (1), a coating machine (2), a coating machine (2), a drying table (10), and a synchronous conveying mechanism (4). The synchronous conveying mechanism (4) is provided with a side edge correction assembly (5) at the bottom, which can pass through the synchronous conveying mechanism (4) and be attached to the two sides of the conveyed workpiece. The synchronous conveying mechanism (4) comprises a frame body (402) and a plurality of conveying belt strips (401) installed between the feeding part (1), the coating machine (2), the coating machine (3), and the drying table (10). The frame body (402) is provided at the two ends of the conveying belt strips (401), and a driving group (403) is arranged on the frame body (402). The conveying belt strips (401) are connected with the driving group (403), and the conveying belt strips (401) are driven by the driving group (403) to rotate synchronously to realize synchronous conveying of the workpiece. The driving group (403) comprises a main motor (4031), and the main motor (4031) is connected with a main transmission shaft (4032). The main transmission shaft (4032) is connected with a slave transmission shaft (4034) through a chain (4033) and drives the slave transmission shaft (4034) to rotate. The main transmission shaft (4032) and the slave transmission shaft (4034) are installed on the frame body (402) and can rotate on the frame body (402). The slave transmission shaft (4034) is provided with a plurality of fixed nodes (6), and the conveying belt strips (401) are installed on the fixed nodes (6). The main transmission shaft (4032) is provided with a plurality of connection nodes (7), and the chain (4033) is installed on the connection nodes (7). ​ The edge bonding correction assembly (5) comprises a plurality of bases (501) arranged at the bottom of the conveying belt strips (401), the bases (501) are provided with edge bonding blocks (502) in a clamping manner, the edge bonding blocks (502) can pass through the gaps between the conveying belt strips (401) from bottom to top, and the edge bonding blocks (502) are used for bonding the edges of the workpieces; Rollers (503) are arranged on the edge bonding blocks (502) in a rotating manner, the rollers (503) can roll on the edge bonding blocks (502), and the rollers (503) bond the edges of the workpieces.

2. The system according to claim 1, wherein, The bottom of the conveying belt strip (401) is provided with a rotating bottom roller (8), the rotating bottom roller (8) is arranged at the bottom of the conveying belt strip (401), the rotating bottom roller (8) is installed on the frame body (402) and rotates on the frame body (402) under the drive of the main transmission shaft (4032), and the rotating bottom roller (8) is connected with the main transmission shaft (4032) through the chain (4033).

3. The system according to claim 1, wherein, The system further comprises a main control cabinet (9), the main control cabinet (9) is in communication connection with the coating rubber roller of the coating one machine (2), the coating rubber roller of the coating two machine (3) and the main motor (4031) respectively, and the main control cabinet (9) can control the rotating speeds of the coating rubber roller of the coating one machine (2), the coating rubber roller of the coating two machine (3) and the main motor (4031) respectively.

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