A degreasing device and degreasing method before plate coating

Abstract

The present invention provides a degreasing device and a degreasing method for a plate before coating, comprising a degreasing tank, a liquid storage tank being arranged on one side of the degreasing tank; a feeding assembly and a discharging assembly being arranged in the liquid storage tank; a clamping assembly being arranged in the degreasing tank, and a pressure tester and a control module being installed on the degreasing tank; the feeding assembly and the discharging assembly being both provided with a liquid pump and a liquid guide tube, the liquid pumps being both fixed to the bottom of the liquid storage tank, two ends of one liquid guide tube being respectively installed at the top of the degreasing tank and a liquid discharge end of a liquid pump adjacent thereto, and the three being communicated with each other, and two ends of another liquid guide tube being respectively installed at the bottom of the degreasing tank and a liquid inlet end of a liquid pump adjacent thereto, and the three being communicated with each other; the present invention has the beneficial effects of improving the stability of the plate structure and the degreasing rate of the plate, being able to clamp the plate in real time to prevent a large deformation of the plate during the dehydration and degreasing process, being able to automatically introduce and discharge the degreasing liquid, and reflecting the automation of the equipment.

Description

Technical Field

[0001] The invention belongs to the technical field of plate degreasing, and relates to a degreasing device and a degreasing method for a plate before painting. Background Art

[0002] Before painting, the plate needs to be degreased using degreasing equipment. This is mainly because the grease inside the plate will flow out, causing the plate to discolor, reduce adhesive properties, reduce paint film adhesion, and pollute the material surface. Therefore, it is necessary to degrease the plate before painting.

[0003] In the prior art, before degreasing, the plates are positioned in the degreasing equipment using a clamp. Due to the loss of grease and moisture inside the plates, there will be a large gap between the clamp and the plates. Therefore, the plates are prone to large deformation during the degreasing process, resulting in poor performance of the plates in later use. In addition, the existing plate degreasing methods have low degreasing efficiency and are time-consuming. Summary of the invention

[0004] The purpose of the present invention is to provide a degreasing device and a degreasing method for a plate before painting, which improves the stability of the plate structure and the degreasing rate of the plate, can clamp the plate in real time to prevent large deformation of the plate during the dehydration and degreasing process, and can automatically introduce and discharge the degreasing liquid, reflecting the automation of the equipment.

[0005] The technical solution adopted by the present invention is a degreasing device before plate painting, comprising a degreasing tank, one side of which is provided with a liquid storage tank;

[0006] The liquid storage tank is provided with a feeding component and a discharging component;

[0007] A clamping assembly is provided in the degreasing tank, and a pressure tester and a control module are installed on the degreasing tank.

[0008] Furthermore, the feeding assembly and the discharging assembly are both provided with a liquid pump and a liquid guide tube, the liquid pumps are both fixed to the bottom of the liquid storage tank, two ends of one of the liquid guide tubes are respectively installed at the top of the degreasing tank and the liquid discharge end of the adjacent liquid pump, and the three are communicated with each other, and two ends of another liquid guide tube are respectively installed at the bottom of the degreasing tank and the liquid inlet end of the adjacent liquid pump, and the three are communicated with each other, and an electromagnetic valve is installed on the outer wall of the liquid guide tube.

[0009] Furthermore, the clamping assembly includes an electric cylinder and a clamping plate, the clamping plate is located above the interior of the degreasing tank, two electric cylinders are provided, both of the electric cylinders are installed on the top of the degreasing tank, and the output end of the electric cylinder passes through the top of the degreasing tank and is fixed to the upper surface of the clamping plate.

[0010] Furthermore, one side of the pressure tester is connected to a sensing head via a wire, the sensing head is installed in the clamping plate, and the lower end of the sensing head is flush with the bottom of the clamping plate.

[0011] Furthermore, two parallel guide rails are installed at the bottom of the inner wall of the degreasing tank, and a placement rack is provided in the degreasing tank. Several sliding blocks are installed on both sides of the bottom of the placement rack. The several sliding blocks are respectively slidably connected to the two guide rails, and the clamping plate is located on the inner side of the placement rack.

[0012] Furthermore, a sealing cover is hinged on one side of the degreasing tank and the liquid storage tank, and an electric push rod is installed on the side of the degreasing tank away from the sealing cover. The output end of the electric push rod passes through the inner wall of the degreasing tank, and a push plate is installed on the output end of the electric push rod.

[0013] Furthermore, a temperature tester, a pressure gauge and a vacuum pump are installed on the outer wall of the degreasing tank, and two heating tubes are installed in the degreasing tank.

[0014] Another technical solution adopted by the present invention is a method for degreasing a plate, comprising the following steps:

[0015] Step 1: Select an appropriate amount of boards, stack them in the tank, and then continue to heat the boards until they are completely dry;

[0016] Step 2: Add degreasing liquid into the tank and soak the plate, continue to heat the plate to 40-50°C, vacuum the tank, reduce the pressure to 1.2MPa-1.5MPa, and maintain the pressure for 30-45min;

[0017] Step 3: Vacuum again to reduce the pressure to 0.6MPa-0.9MPa, maintain the pressure for 2.5-4h, and increase the temperature in the tank to 60-75℃ to deeply degrease the plate;

[0018] Step 4: Pump out the degreasing liquid in the tank, raise the temperature in the tank to 80-105°C to dry the plates until they are absolutely dry, and finally take the plates out of the tank.

[0019] The initial drying temperature of the board is increased to 100-110℃ at a rate of 3℃ / min, kept warm for 55-65min, then increased to 150-160℃ at a rate of 2.5℃ / min, kept warm for 45-60min, and then cooled to 30-35℃ at a rate of 2℃ / min.

[0020] The beneficial effects of the present invention are:

[0021] 1. A board degreasing method in the present scheme, in which the initial drying of the board can reduce the moisture content of the board, and at the same time some oil will be discharged, which will increase the hardness value of the board and improve the stability of the board structure, so that the board has stronger pressure resistance during the later degreasing process. After two heating and evacuation pressure reduction treatments, and the slow segmented heating-cooling treatment during the heating process of the board, it can avoid damage to the board fiber caused by rapid heating and cooling and the decline in mechanical properties. The slow segmented heating-cooling can activate the oil to the greatest extent and promote its separation from the board fiber without damaging the board fiber, thereby improving the degreasing rate of the board.

[0022] 2. A degreasing device for plates before painting in this scheme, when used with an electric cylinder, a clamping plate, a pressure tester, a sensor head and a control module, is conducive to the clamping plate clamping the plate in real time to prevent the plate from undergoing large deformation during the dehydration and degreasing process, thereby improving the stability of the plate and making it beautiful in appearance and durable.

[0023] 3. A degreasing device before plate painting in this scheme can automatically introduce and discharge the degreasing liquid through the use of a feeding component and a discharging component, which reflects the automation of the equipment and makes the plate drying and degreasing treatment more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the main cross-sectional structure of the degreasing tank of the present invention;

[0026] Figure 3 It is a schematic diagram of the three-dimensional structure of the placement rack of the present invention;

[0027] Figure 4 It is a schematic diagram of the front cross-sectional structure of the liquid storage tank of the present invention.

[0028] Markings in the figure: degreasing tank 1, liquid storage tank 2, temperature tester 3, pressure gauge 4, solenoid valve 5, electric cylinder 6, vacuum pump 7, pressure tester 8, liquid guide tube 9, sealing cover 10, guide rail 11, placement rack 12, slider 13, induction head 14, clamping plate 15, heating tube 16, electric push rod 17, push plate 18, liquid extraction pump 19. DETAILED DESCRIPTION

[0029] The present invention is described in detail below in conjunction with specific implementation modes.

[0030] like Figure 1-4 As shown, the present invention discloses a plate degreasing method, comprising the following steps:

[0031] Step 1: Select an appropriate amount of boards, stack them in the tank, and then continue to heat the boards until they are completely dry;

[0032] Step 2: Add degreasing liquid into the tank and soak the plate, continue to heat the plate to 40-50°C, vacuum the tank, reduce the pressure to 1.2MPa-1.5MPa, and maintain the pressure for 30-45min;

[0033] Step 3: Vacuum again to reduce the pressure to 0.6MPa-0.9MPa, maintain the pressure for 2.5-4h, and increase the temperature in the tank to 60-75℃ to deeply degrease the plate;

[0034] Step 4: Pump out the degreasing liquid in the tank, raise the temperature in the tank to 80-105°C to dry the plates until they are absolutely dry, and finally take the plates out of the tank.

[0035] The initial drying temperature of the board is increased to 100-110℃ at a rate of 3℃ / min, kept warm for 55-65min, then increased to 150-160℃ at a rate of 2.5℃ / min, kept warm for 45-60min, and then cooled to 30-35℃ at a rate of 2℃ / min.

[0036] like Figure 1-4 As shown, the present invention also includes a degreasing device before plate coating, including a degreasing tank 1, and a liquid storage tank 2 is provided on one side of the degreasing tank 1;

[0037] A sealing cover 10 is hinged on one side of the degreasing tank 1 and the liquid storage tank 2. Two parallel guide rails 11 are installed at the bottom of the inner wall of the degreasing tank 1. A placement rack 12 is provided inside the degreasing tank 1. Both sides of the bottom of the placement rack 12 are installed with a plurality of sliders 13. The plurality of sliders 13 are slidably connected to the two guide rails 11 respectively.

[0038] Open the sealing cover 10 on the degreasing tank 1 outward, and then move the placement rack 12 outward of the degreasing tank 1 for a distance. When the placement rack 12 moves, it will drive the slider 13 at the bottom thereof to slide on the two guide rails 11 in the degreasing tank 1, so that the staff can stack the plates in the placement rack 12 conveniently. After the plates are stacked, push the placement rack 12 into the degreasing tank 1 so that the placement rack 12 moves into the degreasing tank 1, and then cover the sealing cover 10 on the degreasing tank 1 so that the interior of the degreasing tank 1 is in a closed state.

[0039] The degreasing tank 1 is provided with a clamping assembly, and a pressure tester 8 and a control module are installed on the degreasing tank 1;

[0040] The clamping assembly includes an electric cylinder 6 and a clamping plate 15, wherein the clamping plate 15 is located above the inside of the degreasing tank 1, and two electric cylinders 6 are provided, both of which are installed on the top of the degreasing tank 1, and the output end of the electric cylinder 6 passes through the top of the degreasing tank 1 and is fixed to the upper surface of the clamping plate 15, and the clamping plate 15 is located on the inner side of the placement rack 12;

[0041] One side of the pressure tester 8 is connected to a sensing head 14 through a wire, and the sensing head 14 is installed in the clamping plate 15, and the lower end of the sensing head 14 is flush with the bottom of the clamping plate 15;

[0042] The control module is a control panel, a PLC controller or a computer. The electric cylinder 6 and the pressure tester 8 are both electrically connected to the control module. The pressure value of the pressure tester 8 is preset through the control module. Since the lower end of the sensing head 14 is flush with the bottom of the clamping plate 15, when the clamping plate 15 clamps the plate, the clamping force of the clamping plate 15 is equal to the pressure value measured by the pressure tester 8. Then, the clamping force of the clamping plate 15 is preset by presetting the pressure value of the pressure tester 8, which can effectively prevent the clamping plate 15 from clamping the plate too loosely or too tightly.

[0043] After the plate is completely moved into the degreasing tank 1, the two electric cylinders 6 are started through the control module, and the two electric cylinders 6 will drive the clamping plate 15 to move downward, and the clamping plate 15 will move to the top of the placement rack 12 and clamp the plate. The pressure information felt by the sensor head 14 will be transmitted to the pressure tester 8, and the pressure tester 8 will feed back the pressure information to the control module. When the pressure value obtained by the control module is equal to the preset pressure value, the control module will turn off the power of the two electric cylinders 6, and the clamping plate 15 will stop moving, so that the plate can be clamped automatically, which is time-saving and does not require manual operation by the staff, thereby improving the efficiency of the staff in loading materials.

[0044] The liquid storage tank 2 is provided with a feeding component and a discharging component;

[0045] The feeding assembly and the discharging assembly are both provided with a liquid pump 19 and a liquid guide tube 9, the liquid pump 19 is fixed to the bottom of the liquid storage tank 2, the two ends of one of the liquid guide tubes 9 are respectively installed at the top of the degreasing tank 1 and the adjacent liquid discharge end of the liquid pump 19, and the three are connected, the two ends of another liquid guide tube 9 are respectively installed at the bottom of the degreasing tank 1 and the adjacent liquid inlet end of the liquid pump 19, and the three are connected, and the outer wall of the liquid guide tube 9 is installed with a solenoid valve 5;

[0046] The liquid storage tank 2 is used to store degreasing liquid. The solenoid valve 5 and the liquid pump 19 are electrically connected to the control module. The working time of the solenoid valve 5 and the liquid pump 19 can be preset through the control module. The liquid pump 19 and the solenoid valve 5 in the feeding assembly are started through the control module. The liquid pump 19 will pump the degreasing liquid in the liquid storage tank 2 into the degreasing tank 1 through the liquid conduit 9 to degrease the plate in the degreasing tank 1. After the degreasing liquid is added, the control module will close the liquid pump 19 and the solenoid valve 5.

[0047] The outer wall of the degreasing tank 1 is installed with a temperature tester 3, a pressure gauge 4 and a vacuum pump 7, and two heating pipes 16 are installed inside the degreasing tank 1;

[0048] The temperature tester 3, the barometer 4, the vacuum pump 7 and the two heating tubes 16 are all electrically connected to the control module. The heating temperature of the heating tube 16 and the vacuum value of the vacuum pump 7 can be set through the control module. The heating tube 16 can heat the degreasing tank 1, which is beneficial to the degreasing and drying treatment of the plate. When the vacuum pump 7 is working, the degreasing tank 1 can be vacuumed to achieve the vacuum condition for degreasing of the plate. The temperature tester 3 and the barometer 4 can test the temperature and air pressure in the degreasing tank 1 respectively. The temperature tester 3 and the barometer 4 will transmit the measured data to the control module so that the control module can adjust the temperature and air pressure in the degreasing tank 1 in real time.

[0049] When the plate is degreased and dried, the moisture and grease inside the plate will be lost, making the thickness of the plate gradually thinner, so there will be a gap between the clamping plate 15 and the plate, and the pressure value measured by the sensor head 14 will become smaller. The sensor head 14 will transmit the measured pressure data to the pressure tester 8, and the pressure tester 8 will transmit the information to the control module. The control module will start the two electric cylinders 6, and the two electric cylinders 6 will drive the clamping plate 15 to move down, so that the clamping plate 15 clamps the plate. When the pressure value obtained by the control module is equal to the preset pressure value, the control module will turn off the power of the two electric cylinders 6. Under the use of the electric cylinder 6, the clamping plate 15, the pressure tester 8, the sensor head 14 and the control module, it is beneficial for the clamping plate 15 to clamp the plate in real time to prevent large deformation of the plate during the dehydration and degreasing process, thereby improving the stability of the plate and making the appearance beautiful and durable.

[0050] After the degreasing of the plate is completed, the staff can start the liquid pump 19 and the solenoid valve 5 in the discharge assembly through the control module. The liquid pump 19 will pump the degreasing liquid in the degreasing tank 1 into the liquid storage tank 2 through the liquid conduit 9 connected to it, and the used degreasing liquid will be recovered for later reuse to save resources.

[0051] An electric push rod 17 is installed on the side of the degreasing tank 1 away from the sealing cover 10, the output end of the electric push rod 17 passes through the inner wall of the degreasing tank 1, and a push plate 18 is installed on the output end of the electric push rod 17;

[0052] When the second drying process of the plate is completed, the heating tube 16 is turned off through the control module, and the two electric cylinders 6 are started. The two electric cylinders 6 will drive the clamping plate 15 to move upward, so that the clamping plate 15 is away from the plate, and the sealing cover 10 on the degreasing tank 1 is opened, so that the heat in the degreasing tank 1 can be dissipated to the outside. After the degreasing tank 1 is cooled to room temperature, the electric push rod 17 is connected to the power supply, and the electric push rod 17 will drive the push plate 18 to push the placement rack 12, so that the placement rack 12 moves out of the degreasing tank 1. When the outer end of the placement rack 12 moves a certain distance, the power supply of the electric push rod 17 is cut off, and the material can be automatically discharged, making it more convenient to unload the plate.

[0053] To sum up, with the use of the feeding component and the discharging component, the degreasing liquid can be automatically introduced and discharged, which reflects the automation of the equipment; with the use of the clamping component, the pressure tester 8, the sensor head 14 and the control module, it is beneficial for the clamping plate 15 to clamp the plate in real time to prevent the plate from undergoing large deformation during the dehydration and degreasing process, thereby improving the stability of the plate and making it beautiful in appearance and durable.

Claims

1. A degreasing device for a plate before coating, comprising a degreasing tank (1), a liquid storage tank (2) being provided on one side of the degreasing tank (1), characterized in that: The liquid storage tank (2) is provided with a feeding component and a discharging component; The degreasing tank (1) is provided with a clamping assembly, and a pressure tester (8) and a control module are installed on the degreasing tank (1); The feeding assembly and the discharging assembly are both provided with a liquid pump (19) and a liquid guide tube (9), the liquid pump (19) is fixed to the bottom of the liquid storage tank (2), the two ends of one of the liquid guide tubes (9) are respectively installed on the top of the degreasing tank (1) and the adjacent liquid discharge end of the liquid pump (19), and the three are in communication with each other, the two ends of another liquid guide tube (9) are respectively installed on the bottom of the degreasing tank (1) and the adjacent liquid inlet end of the liquid pump (19), and the three are in communication with each other, and the outer wall of the liquid guide tube (9) is provided with a solenoid valve (5); The clamping assembly comprises an electric cylinder (6) and a clamping plate (15), wherein the clamping plate (15) is located above the inside of the degreasing tank (1), two electric cylinders (6) are provided, and both of the two electric cylinders (6) are installed on the top of the degreasing tank (1), and the output end of the electric cylinder (6) passes through the top of the degreasing tank (1) and is fixed to the upper surface of the clamping plate (15); One side of the pressure tester (8) is connected to a sensing head (14) via a wire. The sensing head (14) is installed in a clamping plate (15), and the lower end of the sensing head (14) is flush with the bottom of the clamping plate (15).

2. The degreasing equipment before plate painting according to claim 1 is characterized in that: Two parallel guide rails (11) are installed at the bottom of the inner wall of the degreasing tank (1), and a placement rack (12) is provided inside the degreasing tank (1). A plurality of sliding blocks (13) are installed on both sides of the bottom of the placement rack (12), and the plurality of sliding blocks (13) are respectively slidably connected to the two guide rails (11), and the clamping plate (15) is located on the inner side of the placement rack (12).

3. The degreasing equipment before plate painting according to claim 1 is characterized in that: A sealing cover (10) is hingedly connected to one side of the degreasing tank (1) and the liquid storage tank (2), and an electric push rod (17) is installed on the side of the degreasing tank (1) away from the sealing cover (10), the output end of the electric push rod (17) passes through the inner wall of the degreasing tank (1), and a push plate (18) is installed on the output end of the electric push rod (17).

4. The degreasing equipment before plate painting according to claim 1 is characterized in that: The outer wall of the degreasing tank (1) is installed with a temperature tester (3), a pressure gauge (4) and a vacuum pump (7), and two heating pipes (16) are installed inside the degreasing tank (1).

5. A degreasing method based on the degreasing device according to any one of claims 1 to 4, characterized in that: The following steps are involved: Step 1: Select an appropriate amount of boards, stack them in the tank, and then continue to heat the boards until they are completely dry; Step 2: Add degreasing liquid into the tank and soak the plate, continue to heat the plate to 40-50°C, vacuum the tank, reduce the pressure to 1.2MPa-1.5MPa, and maintain the pressure for 30-45min; Step 3: Vacuum again to reduce the pressure to 0.6MPa-0.9MPa, maintain the pressure for 2.5-4h, and increase the temperature in the tank to 60-75℃ to deeply degrease the plate; Step 4: Pump out the degreasing liquid in the tank, raise the temperature in the tank to 80-105°C to dry the plates until they are absolutely dry, and finally take the plates out of the tank.

6. The degreasing method according to claim 5, characterized in that: The initial drying temperature of the board is increased to 100-110°C at a rate of 3°C / min, kept warm for 55-65min, then increased to 150-160°C at a rate of 2.5°C / min, kept warm for 45-60min, and then cooled to 30-35°C at a rate of 2°C / min.

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