A turntable color mixing machine

Abstract

The present invention provides a turntable color mixing machine, comprising a frame, a controller is arranged on the frame, a wheel turntable is arranged on the frame to rotate vertically, a plurality of color paste bags are arranged on the wheel turntable, the color paste bags are evenly arranged along the circumference of the wheel turntable, the color paste bags are connected to a piston pump driven by a lifting mechanism to inject a fixed volume through a valve body, a material receiving device that moves up and down is provided in the middle of the wheel turntable, the piston pump and the color paste bag are connected to realize volume injection, the wheel turntable drives the color paste bag to do circular motion, so that the color paste in the color paste bag is turned up and down to achieve a mixing effect, no stirring device is needed to be added, and the manufacturing cost is saved, a plunger valve is arranged in the color paste bag, and the air in the color paste bag is extracted through a vacuum pump to ensure that there is no air in the color paste bag, prevent the color paste from deteriorating, and extend the service life of the color paste.

Description

Technical Field

[0001] The invention relates to the technical field of paint color mixing, and in particular to a rotary disc color mixing machine. Background Art

[0002] When matching the color of car repair paint before painting, one of the common methods is to compare the color card with the car color, find the color card of the same color, and find the masterbatch ratio and weight formula of each masterbatch according to the color card number from the color matching software database in the computer. According to the formula, the required masterbatch is weighed manually, mixed, stirred and prepared to produce car repair paint (hereinafter referred to as car paint) with the same color as the color card. The manual efficiency is low, and the car repair paint prepared according to the color card is usually sometimes different from the color of the car, which requires manual further adjustment, which is time-consuming and laborious, and has high technical requirements for colorists. Experienced mixers are required to prepare car paint with the same color.

[0003] In the existing technology, there is also a method of finding the formula of the spray paint at the factory according to the model or paint code of the car, or using an optical instrument (spectrophotometer) to measure the surface paint of the car to obtain the paint formula. This formula method can be suitable for the analysis of most car surface paints, which is relatively accurate and reduces the error between the color of the car paint obtained by the formula according to the car model or paint code and the actual color of the car paint. But even so, the previous statistical data show that a considerable proportion of car surface paints still have color differences after one color matching, and further manual color matching correction is still required. Therefore, the color matching of today's car repair paint has high requirements for labor and high dependence, while the efficiency of manual color matching is low, especially some paint shops have a very large amount of color matching per day, which can reach dozens or hundreds of colors, and one color matcher cannot complete it. Some shops even need two or four color matchers. Even so, due to the high labor intensity and poor environment (colors are stuck everywhere, even on the body), the technical improvement requires a long time of accumulation, and people are still unwilling to do the job of color matching. On the other hand, it is also very difficult to recruit an excellent color matcher, and no one will do it if the salary is low. Nowadays, color matching technicians are necessary, but for paint shops with small amounts of color matching or where color matching is only an auxiliary business (such as some 4S shops), the income from paint matching cannot even cover the salary of a painter. Therefore, if there is a device on the market that can automatically and accurately match the amount of masterbatches for each color, it can achieve the purpose of improving efficiency, reducing the requirements for matching technology, and reducing labor costs.

[0004] In fact, in recent years, some companies have developed automatic color mixing machines for car repair paints, but they have not been able to form a stable product and put it on the market.

[0005] We all know that the mature and common methods for color matching of automotive paints in the world all use the weight ratio method, and the masterbatch is manually poured out from the paint bucket and weighed to match the color. That is, according to the weight requirements of the required color matching masterbatch, the masterbatch is manually poured out from the masterbatch bucket equipped with a slurry cover on the upper part through the slurry outlet on the slurry cover. The required weight of the color matching masterbatch is weighed on an electronic scale. The color matching masterbatch in each formula is poured out from the masterbatch bucket and weighed to reach the required weight. The color matching masterbatch is stirred and mixed to complete the color matching of the required color paint. The slurry cover has a stirring function and a manual control masterbatch pouring function. At present, the color matching formulas of manufacturers of automotive repair paint color matching masterbatch in the world (such as: Xinjin, DuPont, PPG, BASF) are all designed according to the weight ratio.

[0006] There are two benefits of using weight ratio to manually pour paint and mix colors:

[0007] 1. It is convenient to pour out the required amount of masterbatch from the masterbatch barrel, and it is also convenient to control the pouring amount: just observe that when the required weight on the weighing scale is about to be reached, manually slow down the pouring speed of the masterbatch gradually, so that it slowly approaches the required pouring weight, until it finally reaches the required masterbatch weight and stops pouring the masterbatch. Other color matching masterbatch can also be poured out and weighed in the same way;

[0008] 2. Several masterbatches that need to be matched can be poured into a container and stirred evenly: For example, if three masterbatches are needed to match a color, the weight of each masterbatch is 1.1 grams for masterbatch A, 2.2 grams for masterbatch B, and 3.3 grams for masterbatch C. An empty bucket can be placed on an electronic scale and the weight is reset to zero. Pour masterbatch A into the empty bucket until the electronic scale shows 1.1 grams. Reset the electronic scale, then pour masterbatch B until the electronic scale shows 2.2 grams; then reset the electronic scale, pour color paste C until the electronic scale shows 3.3 grams. Finally, stir the three masterbatches evenly with a stirring ruler to complete the color matching.

[0009] Using weight to match colors is the first natural choice in the history of color matching. In order to avoid the inability to accurately know the proportion of masterbatches and the inability to accurately control the required amount of masterbatches based on experience, the most convenient weight ratio method for accurate color matching was developed based on experience.

[0010] In theory, it is also valid to use volume ratio color matching. However, the volume ratio color matching method that is valid in theory is difficult to implement in practice. There are several ways to get the required volume of color masterbatch by volume ratio color matching method: Assumption 1: Pour the masterbatch manually into the measuring cup, and control the amount of masterbatch poured in by human eye according to the position of the volume scale of the measuring cup. But there is a problem. Due to the characteristics of the paint, the human eye cannot determine the volume of the masterbatch by observing the position of the scale of the measuring cup, and the required 0.1 gram weight accuracy cannot be achieved. In particular, when a large amount of paint is mixed, the volume of the measuring cup must be larger, and the cross-sectional area of ​​the measuring cup is larger. The error of the human eye in determining whether the masterbatch reaches the specified scale position is larger, and the color matching accuracy requirement of 0.1 gram cannot be achieved at all. Moreover, the inaccurate volume manual color mixing method is much more difficult and cumbersome in actual operation than the weight ratio color mixing method, so it cannot achieve effective color mixing and matching; Concept 2: Using the specific gravity cup method: Because of the wall residue of the masterbatch and the discontinuity of volume measurement, it is also difficult to obtain the required volume in actual application; Concept 3: Manual syringe volumetric measurement and injection method: Due to the masterbatch hanging tape at the injection tube head for extracting the masterbatch, it will cause accuracy errors. Removing the hanging tape is both troublesome and environmentally unfriendly. If it is not cleaned, it will flow to the outlet of the syringe head and affect the error guarantee below 0.1 gram. Similarly, manually injecting viscous masterbatch requires a lot of effort, and people with less strength cannot even push it. Although reducing the diameter of the syringe can reduce the injection force and improve the accuracy of a single injection, accurate injection of large amounts of masterbatch requires multiple extractions into the masterbatch container. Each extraction requires clearing the masterbatch hanging at the injection tube mouth, and increasing the number of extractions will increase the cumulative error. At this time, an error of 0.1 gram is more difficult to control, and this is much more complicated than the currently used weight ratio method for color matching. The color matching industry will of course choose the simple and easy-to-implement weight ratio method for color matching, rather than the volume ratio method for color matching, which is both troublesome and difficult to ensure accuracy. Summary of the invention

[0011] The technical problem to be solved by the present invention is how to achieve precise mixing, measure by volume, and prevent air from entering and causing paint deterioration. In order to solve the above problem, the present invention provides a turntable color mixing machine.

[0012] The object of the present invention is achieved in the following manner:

[0013] A turntable color mixing machine comprises a frame, a controller is arranged on the frame, a vertically rotating wheel turntable is arranged on the frame, a plurality of color paste bags are arranged on the wheel turntable, the color paste bags are evenly arranged along the circumference of the wheel turntable, the color paste bags are connected to a piston pump driven by a lifting mechanism to inject a fixed volume through a valve body, and a material receiving device that moves up and down is arranged in the middle of the wheel turntable.

[0014] The frame is provided with a linear drive mechanism, and the material receiving device comprises a moving platform, and the moving platform is connected to the linear drive mechanism and performs vertical linear motion in the middle of the wheeled turntable.

[0015] The linear drive mechanism includes a moving frame, a gear is connected to the top of the moving frame through a bearing seat, the gear is connected to a moving motor through a chain, the chain is fixedly connected to a moving plate, the moving plate is connected to the moving frame through a pulley, the moving plate is fixedly connected to a material receiving platform, and a paint mixing cup is provided on the material receiving platform.

[0016] A turntable motor is arranged above the moving frame, a plurality of wheel pin holes are arranged on the circumference of one side of the wheel turntable away from the piston pump, the turntable motor is connected to the columnar driving wheel, and the turntable motor drives the wheel turntable to rotate through the driving wheel pin on the driving wheel.

[0017] A valve body lever is arranged on the valve body, a slurry outlet nozzle is arranged below the valve body, an injection channel is arranged in the valve body, and the lifting mechanism comprises a lifting frame, on which a valve motor is arranged for moving the valve body lever to connect or close the injection channel with the slurry outlet nozzle.

[0018] The lifting frame is provided with a lifting drive mechanism, and the lifting drive mechanism is provided with a clamping block which moves up and down, and the clamping block lifts or presses down the piston rod of the piston pump.

[0019] A slurry inlet is provided above the color paste bag, and a slurry outlet is provided below the color paste bag. The slurry outlet is connected to the valve body through a slurry pipe, the slurry inlet is threadedly connected to the plunger valve, and a sealing cover is threadedly connected above the plunger valve, and the sealing cover is connected to the vacuum cylinder through a hose.

[0020] The valve body is a reflux valve, and the piston pump is a large and small combined pump.

[0021] A plurality of support rods are arranged on the inner periphery of the wheel-type turntable, the color paste bag is fixedly connected to the hanging plate, and the support rods are fixedly connected to the hanging plate with adjacent support rods.

[0022] A cleaning assembly for cleaning the pulp outlet is arranged on the wheel turntable. The cleaning assembly comprises a brush assembly and a cleaning wheel assembly. The cleaning wheel assembly comprises a cleaning wheel shaft and a cotton glue cleaning wheel arranged on the cleaning wheel shaft. The brush assembly comprises a brush shaft and a brush.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows: a piston pump is used to connect the color paste bag to realize volume injection, the wheel turntable drives the color paste bag to make a circular motion, so that the color paste in the color paste bag is turned up and down to achieve a mixing effect, and there is no need to add a stirring device, which saves manufacturing costs. A plunger valve is set in the color paste bag, and the air in the color paste bag is extracted through a vacuum pump to ensure that there is no air in the color paste bag, prevent the color paste from deteriorating, and extend the service life of the color paste. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the present invention.

[0025] Figure 2It is a structural schematic diagram of the linear drive mechanism.

[0026] Figure 3 It is a structural diagram of the lifting mechanism.

[0027] Figure 4 yes Figure 3 The reverse side of .

[0028] Figure 5 This is a schematic diagram of the installation of the piston pump and the color paste bag.

[0029] Figure 6 It is a schematic diagram of the structure of the cleaning component.

[0030] Figure 7 It is a schematic diagram of the installation of the wheel turntable and the support rod.

[0031] Figure 8 This is the installation diagram of the turntable motor.

[0032] Fig. 9 yes Figure 8 Enlarged view of B.

[0033] Fig.10 It is a schematic diagram of the structure of the color paste bag.

[0034] Fig.11 It is a cross-sectional view of the color paste bag.

[0035] Fig.12 It is a structural diagram of the piston pump and valve body.

[0036] Among them, 1. Frame. 2. Color paste bag, 3. Wheel turntable, 4. Material receiving platform, 5. Mobile frame, 6. Bearing seat, 7. Chain, 8. Gear, 9. Mobile plate, 10. Mobile motor, 11. Lifting frame, 12. Stepper motor, 13. Lead screw, 14. Screw nut, 15. Block, 16. Valve motor, 17. Piston pump, 18. Valve body, 19. Turntable motor, 20. Driving wheel, 21. Driving wheel pin, 22. Wheel pin hole, 23. Cleaning assembly, 31. Support rod, 201. Hanging plate, 202. Slurry pipe, 203. Plunger valve, 204. Sealing cover, 205 Vacuum pump, 231. Brush assembly, 232. Cleaning wheel assembly, 171. Piston rod, 181. Valve body lever, 182. Slurry nozzle, 183. Injection channel, 161. Lever. DETAILED DESCRIPTION

[0037] As attached Figures 1 to 12As shown, a turntable color mixing machine includes a frame 1, a controller is provided on the frame 1, a vertically rotating wheel turntable 3 is provided on the frame 1, a plurality of color paste bags 2 are provided on the wheel turntable 3, and the color paste bags 2 are evenly arranged along the circumference of the wheel turntable 3. The color paste bags 2 are connected to a piston pump 17 driven by a lifting mechanism to inject a fixed volume through a valve body 18. A material receiving device that moves up and down is provided in the middle of the wheel turntable 3. The valve body 18 has the functions of on-off and flow conversion, and the piston pump 17 has the function of volume measurement. At present, in the field of color matching of automobile repair paint, various color pastes are prepared according to mass specific gravity. This method requires the additional setting of weighing devices such as electronic scales. In this application, the piston pump 17 injects color paste according to volume, and various color pastes can be prepared by volume ratio to achieve a predetermined effect, without the need for a weighing device.

[0038] The frame 1 is provided with a linear drive mechanism, and the material receiving device includes a mobile platform, and the mobile platform is connected to the linear drive mechanism, so that the material receiving device makes an up and down linear motion in the middle of the wheeled turntable 3, and the linear drive mechanism includes a mobile frame 5, and the upper part of the mobile frame 5 is connected to a gear 8 through a bearing seat 6, and the gear 8 is connected to a mobile motor 10 through a chain 7, and the mobile motor 10 is a servo motor. The mobile motor 10 is electrically connected to a controller on the frame 1, and the controller controls the mobile motor 10 to work. A connecting mobile plate 9 is fixed on the chain 7, and the middle part of the chain 7 is fixed to the mobile plate 9, and the chain 7 is used for transmission to prevent slipping. The mobile plate 9 is connected to the mobile frame 5 through a pulley, that is, the mobile plate 9 moves up and down in the mobile frame, and the mobile plate 9 is fixedly connected to the material receiving platform 4, and a paint mixing cup is provided on the material receiving platform 4. The middle of the wheeled turntable 3 is hollowed out as the up and down moving area of ​​the mobile platform. When mixing the color paste, the paint mixing cup should be placed on the mobile platform in advance to prevent leakage and affect the volume ratio.

[0039] A turntable motor 19 is provided above the movable frame 5. The turntable motor 19 is a servo motor. The turntable motor 19 is connected to a controller on the frame 1. The controller controls the turntable motor 19 to work. A plurality of wheel pin holes 22 are provided on the circumference of the side of the wheeled turntable 3 away from the piston pump 17. The turntable motor 19 is connected to a columnar driving wheel 20. The turntable motor 19 drives the wheeled turntable 3 to rotate through a driving wheel pin 21 on the driving wheel 20. The driving wheel pin 21 cooperates with the wheel pin hole 22 and is evenly distributed around the side of the wheeled turntable 3 away from the piston pump. When the turntable motor 19 drives the driving wheel pin 21 to rotate, the driving wheel pin 21 corresponds to the wheel pin hole 22 one by one.

[0040] The valve body 18 is provided with a valve body lever 181, a slurry outlet nozzle 182 is provided below the valve body 18, and an injection channel 183 is provided in the valve body 18. The lifting mechanism includes a lifting frame 11, and the lifting frame 11 is provided with a valve motor 16 for toggling the valve body lever 181 to connect or close the injection channel 183 with the slurry outlet nozzle 182. The valve motor 16 is provided with a lever 161, and the lever 161 rotates to rotate the valve body lever 181. The lifting frame 11 is provided with a lifting drive mechanism, and the lifting drive mechanism is provided with a block 15 that moves up and down. The block 15 lifts or presses down the piston rod 171 of the piston pump 17. The lifting drive mechanism can be a screw 13 nut 14 mechanism. The lifting frame 11 is provided with a screw 13 driven to rotate by a stepping motor 12, and a nut 14 is provided on the screw 13, and the nut 14 is connected to the block 15. The block 15 is a slot-type mechanism, and the piston head of the piston rod 171 leaves or enters the slot of the slot-type mechanism as the wheel turntable 3 rotates. The nut 14 moves up and down to drive the block 15, and the block 15 moves the piston rod 171 up and down to suck away the color paste from the color paste bag 2 and beat the color paste.

[0041] A slurry inlet is provided above the color paste bag 2, and a slurry outlet is provided below the color paste bag 2. The slurry outlet is connected to the valve body 18 through a slurry pipe 202, and the slurry inlet is threadedly connected to a plunger valve 203. A sealing cover 204 is threadedly connected above the plunger valve 203. The sealing cover 204 is connected to a vacuum cylinder 205 through a hose. The plunger valve 203 is opened, and the vacuum cylinder 205 sucks out the air in the color paste bag 2 to prevent residual air from causing the color paste to deteriorate. After the air is sucked out, the plunger valve 203 is closed, and the vacuum cylinder 205 is removed, which does not hinder the rotation of the color paste bag 2 on the wheel turntable 3. At the same time, during the rotation, the color paste in the color paste bag 2 can also be fully stirred to prevent the color paste from drying up due to long-term non-use.

[0042] The valve body 18 is a reflux valve, and the piston pump 17 is a large and small combination pump, such as the valve body 18 structure and pump structure in patent CN201410792479.7 or CN201711400600.7 or CN201310045508.9. The reflux valve has a reflux channel. When the valve body 18 is in a closed state, that is, no color paste is injected, the reflux channel is connected, that is, the valve body 18 is connected to the color paste bag 2, and the paint can flow back into the color paste. Because the paint is relatively viscous, if there is no reflux channel, the injection channel 183 is easy to dry and clog, making it difficult to discharge the paint.

[0043] A plurality of support rods 31 are arranged around the inner periphery of the wheel turntable 3, the color paste bags 2 are fixedly connected to the hanging plates 201, and the support rods 31 are fixedly connected to the hanging plates 201 between the adjacent support rods 31, the color paste bags 2 are arranged around the wheel turntable 3, and the support rods 31 make the space of the color paste bags 2 uniform.

[0044] A cleaning assembly 23 is provided on the wheel turntable 3 to clean the pulp outlet nozzle 182. The cleaning assembly 23 includes a brush assembly 231 and a cleaning wheel assembly 232. The cleaning wheel assembly 232 includes a cleaning wheel shaft and a cotton glue cleaning wheel arranged on the cleaning wheel shaft. The brush assembly 231 includes a brush shaft and a brush. The brush shaft and the cleaning wheel shaft are both passive shafts. After the injection channel 183 is removed, the cleaning wheel assembly 232 first passes through the pulp outlet nozzle 182 and then the brush assembly 231 to clean the pulp outlet nozzle 182 to prevent residual color paste from drying up.

[0045] The color paste bag 2 is a soft bag with good sealing performance to prevent air from entering. The wheel turntable 3 drives the color paste bag 2 to rotate in a circle, so that the color paste is turned up and down in the color paste bag 2 to achieve a mixing effect and prevent the color paste from drying out due to long-term storage.

[0046] The working process is as follows:

[0047] The worker puts the color paste into the corresponding color paste bag 2 one by one. When putting in each bag of color paste, the worker uses the exhaust pipe to extract the air in the color paste bag 2 to ensure that there is no air in the color paste bag 2. The controller starts to control the turntable motor 19 to work. The turntable motor 19 drives the wheel turntable 3 to rotate through the driving wheel pin 21. During the rotation, the color paste bag 2 flips up and down to ensure that the color paste does not dry up. The piston pump 17 moves to the top of the wheel turntable 3, that is, the piston rod 171 of the piston pump 17 is transported to the block 15, and the controller controls the lifting drive mechanism to start working. At the same time, the controller The mobile motor 10 is controlled to work. The mobile motor 10 moves the mobile plate 9 upwards through the chain 7. The mobile plate 9 drives the material receiving platform 4 to move upwards. Before work, a paint mixing cup is placed on the material receiving platform 4. The screw 13 rotates to drive the nut 14 to move upwards. The block 15 drives the piston rod 171 of the piston pump 17 to rise to extract the color paste. After the piston rod 171 rises to a preset displacement, the valve motor 16 is started to connect the injection channel 183 of the valve body 18 to the slurry outlet nozzle 182, and the piston rod 171 begins to descend. A predetermined amount of color paste flows out from the slurry outlet nozzle 182 to the paint mixing cup.

[0048] It is particularly noteworthy that the controller is a PLC, which is well known to those skilled in the art and will not be described in detail in this specification.

[0049] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several changes and improvements can be made without departing from the overall concept of the present invention, which should also be regarded as the scope of protection of the present invention.

Claims

1. A turntable color mixing machine, comprising a frame, on which a controller is provided, characterized in that: A vertically rotating wheel turntable is provided on the frame, and a plurality of color paste bags are provided on the wheel turntable. The color paste bags are evenly arranged along the circumference of the wheel turntable. The color paste bags are connected to a piston pump driven by a lifting mechanism to inject a fixed volume through a valve body. A material receiving device that moves up and down is provided in the middle of the wheel turntable. The color paste bag is a soft bag with good sealing performance; a paste inlet is arranged on the top of the color paste bag, the paste inlet is connected to the plunger valve, a sealing cover is connected to the top of the plunger valve, and the sealing cover is connected to the vacuum pump through a hose; a paste outlet is arranged at the bottom of the color paste bag, and the paste outlet is connected to the valve body through a paste pipe; The workers put the color pastes into the corresponding color paste bags one by one. When putting in each bag of color paste, the workers use a vacuum pump to extract the air in the bag to ensure that there is no air in the bag. A plurality of support rods are arranged on the inner periphery of the wheel-type turntable, the color paste bag is fixedly connected to the hanging plate, and the support rods are fixedly connected to the hanging plate with adjacent support rods.

2. The rotary disc color mixing machine according to claim 1, characterized in that: The frame is provided with a linear drive mechanism, and the material receiving device comprises a moving platform, and the moving platform is connected to the linear drive mechanism and performs vertical linear motion in the middle of the wheeled turntable.

3. The rotary disc color mixing machine according to claim 2, characterized in that: The linear drive mechanism includes a moving frame, a gear is connected to the top of the moving frame through a bearing seat, the gear is connected to a moving motor through a chain, the chain is fixedly connected to a moving plate, the moving plate is connected to the moving frame through a pulley, the moving plate is fixedly connected to a material receiving platform, and a paint mixing cup is provided on the material receiving platform.

4. The rotary color mixing machine according to claim 3, characterized in that: A turntable motor is arranged above the moving frame, a plurality of wheel pin holes are arranged on the circumference of one side of the wheel turntable away from the piston pump, the turntable motor is connected to the columnar driving wheel, and the turntable motor drives the wheel turntable to rotate through the driving wheel pin on the driving wheel.

5. The rotary disc color mixing machine according to claim 1, characterized in that: A valve body lever is arranged on the valve body, a slurry outlet nozzle is arranged below the valve body, an injection channel is arranged in the valve body, and the lifting mechanism comprises a lifting frame, on which a valve motor is arranged for moving the valve body lever to connect or close the injection channel with the slurry outlet nozzle.

6. The rotary disc color mixing machine according to claim 5, characterized in that: The lifting frame is provided with a lifting drive mechanism, and the lifting drive mechanism is provided with a clamping block which moves up and down, and the clamping block lifts or presses down the piston rod of the piston pump.

7. The rotary disc color mixing machine according to claim 1, characterized in that: The valve body is a reflux valve, and the piston pump is a large and small combined pump.

8. The rotary disc color mixing machine according to claim 1, characterized in that: A cleaning assembly for cleaning the pulp outlet is arranged on the wheel turntable. The cleaning assembly comprises a brush assembly and a cleaning wheel assembly. The cleaning wheel assembly comprises a cleaning wheel shaft and a cotton glue cleaning wheel arranged on the cleaning wheel shaft. The brush assembly comprises a brush shaft and a brush.

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