阅读说明：本技术 调色机清洗机构
(Color mixer cleaning mechanism
) 是由 张坤坤
沈如华 于 2019-03-17 设计创作，主要内容包括：本发明提供一种调色机清洗机构,包括机体,机体上设置水平移动机构,水平移动机构上设置升降机构,升降机构上设置绕自身轴线转动的毛刷。升降机构包括设置在机架上的安装板,安装板上转动连接两个上支撑臂,两个上支撑臂远离安装板的一端分别连接一个下支撑臂,两个下支撑臂转动连接在下安装板上,下安装板与可以转动的毛刷转动相连；两个上支撑臂之间或者两个下支撑臂之间设置直线伸缩机构,直线伸缩机构伸缩带动下安装板上下移动。本发明的清洁机构结构简单、精度高、成本低、有效的满足调色机的需要。(The invention provides a color mixer cleaning mechanism which comprises a machine body, wherein a horizontal moving mechanism is arranged on the machine body, a lifting mechanism is arranged on the horizontal moving mechanism, and a brush rotating around the axis of the lifting mechanism is arranged on the lifting mechanism. The lifting mechanism comprises a mounting plate arranged on the rack, two upper supporting arms are rotatably connected on the mounting plate, one ends of the two upper supporting arms, which are far away from the mounting plate, are respectively connected with a lower supporting arm, the two lower supporting arms are rotatably connected on the lower mounting plate, and the lower mounting plate is rotatably connected with a rotatable brush; a linear telescopic mechanism is arranged between the two upper supporting arms or between the two lower supporting arms, and the linear telescopic mechanism drives the lower mounting plate to move up and down in a telescopic mode. The cleaning mechanism has the advantages of simple structure, high precision and low cost, and effectively meets the requirements of the color mixer.)
1. The utility model provides a color mixer wiper mechanism, includes the organism, its characterized in that: a horizontal moving mechanism is arranged on the machine body, a lifting mechanism is arranged on the horizontal moving mechanism, and a brush rotating around the axis of the lifting mechanism is arranged on the lifting mechanism.
2. The tinting machine cleaning mechanism of claim 1 in which: the lifting mechanism comprises a mounting plate arranged on the rack, two upper supporting arms are rotatably connected to the mounting plate, one ends of the two upper supporting arms, which are far away from the mounting plate, are respectively connected with a lower supporting arm, the two lower supporting arms are rotatably connected to the lower mounting plate, and the lower mounting plate is rotatably connected with a rotatable brush; a linear telescopic mechanism is arranged between the two upper supporting arms or between the two lower supporting arms, and the linear telescopic mechanism drives the lower mounting plate to move up and down in a telescopic mode.
3. The tinting machine cleaning mechanism of claim 2 in which: the upper supporting arm and the lower supporting arm are hinged to each other, the lower end of the upper supporting arm and the upper end of the lower supporting arm are rotatably arranged on the hinged shafts, and the two hinged shafts are respectively connected with the telescopic end and the fixed end of the linear telescopic mechanism.
4. The tinting machine cleaning mechanism of claim 2 in which: the end of the two upper supporting arms, which is positioned on the mounting plate, is provided with meshing teeth which are distributed along the circumference and centered around the rotating shaft of the mounting plate, and the meshing teeth of the two upper supporting arms are meshed and clamped with each other.
5. The tinting machine cleaning mechanism of claim 4 in which: the one end that two lower support arms lie in the lower mounting panel sets up the meshing tooth that lower support arm around the axis of rotation of lower mounting panel pivoted as the center, distribute along the circumference, intermeshing between the meshing tooth of two lower support arms.
6. The tinting machine cleaning mechanism of any one of claims 2 to 5 in which: a telescopic multi-section sleeve is rotatably arranged on the mounting plate and is driven to rotate by a driving mechanism; the multi-section sleeve comprises at least two sections of sleeves, and adjacent sleeves are connected in a sliding manner; the brush is fixed at the tail end of the multi-section sleeve.
7. The tinting machine cleaning mechanism of any one of claims 1 to 5, further comprising: the machine body is provided with an outlet space for cleaning and receiving color paste, and a backflow injection assembly is circumferentially distributed around the outlet space and comprises a first valve and an injection plate, the injection plate comprises at least one liquid outlet through hole, the first valve comprises at least one backflow channel, and the first valve and the injection plate move relatively to enable the injection assembly to change between an injection position and a backflow position.
Technical Field
The invention belongs to the field of paint color mixing, and particularly relates to a cleaning mechanism of a color mixer.
Background
Tinting machines are common devices in the coatings field for taking different coatings and mixing them as desired to obtain a desired coating, such as latex paint. The color mixer is internally provided with a plurality of components for pouring color paste, the pouring components comprise a color paste channel, a pump body and the like, and the color paste is poured through a paste outlet channel or a paste outlet nozzle. The injection components are arranged on the color mixer in various ways, generally in a way that a plurality of injection components are arranged linearly or circumferentially. The paste outlet nozzles of the injection components which are arranged in a circumferential manner can be concentrated in a range, and the automatic color mixing mechanism is suitable for simultaneously injecting at least two color pastes. There are various kinds of pouring-out assemblies including a backflow pouring-out assembly having a dry junction prevention function, and the like. The CN105026307B dispensing valve assembly and the mill base dispensing device for a tinting machine provide a back flow pour out assembly and mill base dispensing device, but still have some problems. Because of the tension of liquid such as color paste, the paste outlet part of the paste outlet channel of the paste outlet assembly is easy to absorb the liquid, thereby reducing the pouring accuracy of the color paste. The residual color paste after the color paste is poured out needs to be cleaned, and the existing structure of the pouring-out assembly and the cleaning mechanism causes insufficient cleaning.
Disclosure of Invention
The invention provides a cleaning mechanism of a color mixer.
The object of the invention is achieved in the following way: a color mixer cleaning mechanism comprises a machine body, wherein a horizontal moving mechanism is arranged on the machine body, a lifting mechanism is arranged on the horizontal moving mechanism, and a brush rotating around the axis of the brush is arranged on the lifting mechanism.
The lifting mechanism comprises a mounting plate arranged on the rack, two upper supporting arms are rotatably connected on the mounting plate, one ends of the two upper supporting arms, which are far away from the mounting plate, are respectively connected with a lower supporting arm, the two lower supporting arms are rotatably connected on the lower mounting plate, and the lower mounting plate is rotatably connected with a rotatable brush; a linear telescopic mechanism is arranged between the two upper supporting arms or between the two lower supporting arms, and the linear telescopic mechanism drives the lower mounting plate to move up and down in a telescopic mode.
The upper supporting arm and the lower supporting arm are hinged to each other, namely the lower end of the upper supporting arm and the upper end of the lower supporting arm are rotatably arranged on the hinged shafts, and the two hinged shafts are respectively connected with the telescopic end and the fixed end of the linear telescopic mechanism.
The end of the two upper supporting arms, which is positioned on the mounting plate, is provided with meshing teeth which are distributed along the circumference and centered around the rotating shaft of the mounting plate, and the meshing teeth of the two upper supporting arms are meshed and clamped with each other.
The end of the two lower supporting arms, which is positioned on the lower mounting plate, is provided with meshing teeth which are distributed along the circumference by taking the rotating shaft of the lower supporting arms rotating around the lower mounting plate as the center, and the meshing teeth of the two lower supporting arms are meshed with each other.
A plurality of telescopic sleeves are rotatably arranged on the mounting plate and are driven to rotate by a driving mechanism; the multi-section sleeve comprises at least two sections of sleeves, and adjacent sleeves are connected in a sliding manner; the brush is fixed at the tail end of the multi-section sleeve.
The organism sets up the export space that is used for the clearance and connects and get the mill base, is the backward flow of circumference distribution around the export space and pours out the subassembly, and the backward flow is annotated out the subassembly and is included first valve member and annotate out the board, annotates out the board and includes at least one play liquid through-hole, and first valve member includes at least one backward flow passageway, and relative movement makes and annotates out the subassembly and change between annotating out position and backward flow position between first valve member and annotating out the board.
The invention has the beneficial effects that: the cleaning mechanism of the color mixer has the advantages of simple structure, high precision, low cost and capability of effectively meeting the requirements of the color mixer.
Drawings
FIG. 1 is a schematic view of a tinting machine dispensing assembly and a purging mechanism.
FIG. 2 is a circumferential distribution of the tinting machine pour-out assembly.
Fig. 3 is a schematic view of a reflux extraction assembly.
Fig. 4 is a schematic view of the pour-out plate.
Fig. 5 is a sectional view of fig. 4.
Fig. 6 is a schematic view of the cleaning mechanism.
Fig. 7 is a schematic view of the elevator mechanism in an extended state.
Fig. 8 is a sectional view of fig. 3.
Figure 9 is a schematic view of the first valve member.
Wherein, 1 is a frame, 11 is a base, 12 is an outlet space, 2 is a backflow injection assembly, 20 is an injection plate, 200 is a backflow through hole, 201 is a liquid outlet through hole, 21 is a backflow pipe, 22 is a pulp outlet pipe, 220 is an upper limit stop, 221 is a lower limit stop, 23 is a sealing mechanism, 24 is a swing rod, 25 is a spring, 26 is a first valve element, 260 is a backflow channel, 27 is a cleaning tank, 3 is a fixed frame, 30 is a horizontal strip groove, 31 is a limit groove, 4 is a horizontal guide rail pair, 40 is a sliding block, 5 is a moving frame, 50 is a screw rod, 51 is a nut, 52 is a first motor, 53 is a second guide rail, 54 is a sensor, 6 is a pressing sliding block, 60 is a guide column, 61 is a compression spring, 7 is a cleaning mechanism, 70 is a brush, 71 is a mounting plate, 72 is an upper support arm, 73 is a lower mounting plate, 74 is a lower support arm, 75 is a second lead screw mechanism, 76 is a linear expansion mechanism, 77 is a tooth and 78 is a multi-section sleeve.
Detailed Description
As shown in fig. 1 to 9, a pouring assembly includes a pouring plate 20, a liquid outlet through hole 201 is provided on the pouring plate 20, a slurry outlet pipe 22 is provided in the liquid outlet through hole 201, the slurry outlet pipe 22 moves up and down in the liquid outlet through hole 201, and when the lower end of the slurry outlet pipe 22 extends out of the liquid outlet through hole 201, the slurry outlet pipe 22 is in a state of pouring out liquid. The slurry outlet pipe 22 is communicated with the slurry pump through the pump body. Since the liquid such as color paste or water has surface tension, the color paste adheres to the surface of the outlet. The pouring plate 20 is mostly in a planar state, and when the color paste is directly poured out from the liquid outlet through hole 201, more color paste is attached to the outlet of the liquid outlet through hole 201, which affects the amount of the poured color paste, thereby affecting the pouring accuracy of the pouring assembly. The paste outlet pipe 22 arranged in the paste outlet through hole 201 can effectively reduce the amount of the paste attached to the paste outlet of the paste outlet pipe.
The thickness of the lower end surface of the slurry outlet pipe 22 is less than 1 mm. At the slurry outlet of the slurry outlet pipe 22, the smaller the wall thickness, the higher the precision, and the same inner diameter of the slurry outlet. Preferred wall thicknesses may be 0.5 mm and below. Or the grout outlet pipe 22 is a thin-walled pipe, and the thickness of the thin-walled pipe is less than 1 mm. Or the wall thickness of the lower end of the slurry outlet pipe 22 is gradually reduced from top to bottom. The thickness of the end surface, namely the wall thickness at the pulp outlet is less than 1 mm. A sealing mechanism 23 is arranged between the liquid outlet through hole 201 and the pulp outlet pipe 22. The sealing mechanism 23 may be a gasket.
The pulp outlet pipe 22 moves up and down in the pulp outlet through hole 201, indicating that the pulp outlet pipe 22 is extended downward by a downward force and retracted by an upward force. The specific structure can be as follows: the injection assembly further comprises a swing rod 24 rotatably arranged on the injection plate 20, an upper limit stop 220 and a lower limit stop 221 are arranged on the slurry outlet pipe 22, and the A end of the swing rod 24 is positioned between the upper limit stop 220 and the lower limit stop 221. When the end A of the swing rod 24 rotates downwards, the end A of the swing rod 24 pushes the lower limit stop block 221 to move downwards together with the pulp outlet pipe 22; when the swing lever 24 is rotated upward, the end A of the swing lever 24 pushes the upper limit stopper 220 to move upward together with the slurry outlet pipe 22. A power source is required to be provided to the rocking lever 24 to rotate the rocking lever. The power source for the oscillation may be a conventional mechanism. The oscillating lever 24 may be provided in a "7" shape or other shapes depending on the actual situation. The upper limit stopper 220 and the lower limit stopper 221 are located above the injection plate 20, i.e., on the side away from the contact surface of the injection plate 20 and the first valve element 26.
Or the pouring-out assembly also comprises a swing rod 24 which is rotatably arranged on the pouring-out plate 20, a lower limit stop 221 is arranged above the pouring-out plate 20 of the slurry outlet pipe 22, the end A of the swing rod is arranged above the lower limit stop 221, and a spring 25 is arranged between the slurry outlet pipe and the pouring-out plate 20. When the A end of the swing lever 24 is rotated downward, the A end of the swing lever pushes the lower limit stopper 221 to move downward together with the pulp outlet pipe 22. When the A end of the swing rod 24 rotates upwards, the resilience of the spring 25 provides an upward force for the pulp outlet pipe. The spring 25 can also be added to the previous embodiment, but in this case the spring 25 has a damping effect.
In order to prevent the color paste from drying out in the channel or the outlet, a dispensing assembly with a return function, i.e. a return dispensing assembly 2, can be used. The return flow injection assembly 2 further includes a first valve member 26, the first valve member 26 including at least one return flow passage 260, and relative movement between the first valve member 26 and the injection plate 20 transitioning the return flow injection assembly 2 between the injection position and the return flow position. The interface between the first valve member 26 and the pour plate 20 is preferably planar. The injection plate 20 is further provided with a return through hole 200, and a return pipe 21 is arranged in the return through hole 200. When in the backflow position, the liquid outlet through hole 201, the backflow channel 260 and the backflow through hole 200 are communicated. There are, of course, other ways of refluxing and other configurations as desired, as shown in patent CN 105026307B. These are prior art and will not be described in detail.
The injection assembly can also comprise a fixed frame 3, a first linear driving mechanism is arranged on the fixed frame 3, and the moving end of the first linear driving mechanism is fixedly connected with the injection plate 20 to move the injection plate 20; the end B of the swing rod 24 is arranged in the horizontal strip-shaped groove 30 of the fixed frame 3, and the horizontal moving stroke of the injection plate 20 is larger than the horizontal length of the horizontal strip-shaped groove 30; the shape of the horizontal bar-shaped groove 30 is fitted correspondingly to the swing margin of the swing lever 24.
In addition, the conventional backflow jet assembly 2 includes a first valve member 26 and a jet plate 20, the jet plate 20 includes at least one fluid outlet hole 201, the first valve member 26 includes at least one backflow passage 260, and relative movement between the first valve member 26 and the jet plate shifts the backflow jet assembly between the jet position and the backflow position. Wherein the contact surface between the first valve member 26 and the pouring plate 20 is a plane surface, i.e. the axial line or length direction of the liquid outlet hole 201 is perpendicular to the contact surface. With the structure, the residual color paste after the color paste is poured out is inconvenient to clean. In the present invention, the contact surface of the first valve element 26 and the pouring plate 20 may be provided as an inclined plane. The axis or length direction of the liquid outlet through hole 201 has a certain included angle with the contact surface. By the structure, residual color paste is easier to gather downwards at the cleaning position, and cleaning of a cleaning tool is facilitated.
The relative movement between the first valve member 26 and the pour plate 20 to transition the backflow pour assembly 2 between the pour position and the backflow position is: the pour plate 20 moves horizontally and the first valve member 26 moves up and down in cooperation with the pour plate 20 to maintain contact between the two. The pour plate 20 and the first valve member 26 are inclined so that when the pour plate 20 moves horizontally, the first valve member 26 needs to move up and down to ensure that the pour plate 20 and the first valve member 26 are always in contact.
The backflow injection assembly 2 further comprises a fixed frame 3, a horizontal guide rail pair 4 is arranged on the fixed frame 3, a moving device is fixedly connected to a sliding block 40 of the horizontal guide rail pair and comprises a moving frame 5, and a screw rod mechanism is arranged on the moving frame 5; the screw mechanism comprises a screw 50 and a nut 51; wherein the screw 50 is rotatably arranged on the moving frame 5, and the contact surface of the injection plate 20 and the first valve piece 26 is parallel to the axis of the screw 50 in the moving direction of the moving frame; the nut 51 is arranged in the limiting groove 31 of the fixed frame 3 in a vertical sliding manner; the limiting groove 31 limits the horizontal movement of the nut 51; the nut 51 is fixedly connected to the first valve member 26. The screw 50 of the screw mechanism is rotatably provided on the moving frame 5 through a bearing. The screw 50 is rotated by a first motor 52. The first motor 52 may be a servo motor. The limiting groove 31 is perpendicular to the moving direction of the moving frame 5, and the nut 51 moves linearly in the limiting groove 31. The intersection line of the plane of the axis of the screw 50 and the moving direction of the moving frame 5 with the contact surface of the pouring plate 20 and the first valve element 26 is parallel to the axis of the screw 50. The screw 50 is inclined, and the slide block 40 fixed with the screw 50 can only move linearly in the horizontal direction, so that the screw 50 rotates and moves linearly horizontally to drive the injection plate 20 to move, and the nut 51 moves up and down to drive the first valve element 26 to move.
The pressing slide block 6 is elastically connected below the first valve piece 26, and the pressing slide block 6 and the second guide rail 53 on the moving frame 5 form a second guide rail pair; the axis of the second rail 53 is parallel to the axis of the screw 50. The first valve member 26 and the pressing slider 6 are provided with guide holes, guide posts 60 capable of moving are arranged in the guide holes, and a compression spring 61 is arranged outside the guide posts 60 between the first valve member 26 and the pressing slider 6. The rollers are rotatably arranged below the pressing sliding block 6 and slide in the guide grooves of the second guide rail 53, so that the pressing sliding block 6 rolls on the second guide rail 53. The roller can be directly used as a bearing. The compression slide allows for resilient compression between the first valve member 26 and the pour plate 20.
A position sensor 54 or a travel switch for determining the distance traveled by the injection plate is provided between injection plate 20 and first valve plate 26. For example, the emitting ends or receiving ends of two position sensors are arranged on the movable frame 5 along a line parallel to the axis of the screw 50, and the end of the first valve plate 26 is connected to the other end of the position sensor 54, so as to determine the distance of relative movement between the injection plate 20 and the first valve plate 26.
In addition, the slurry outlet pipe 22 moving up and down in the liquid outlet through hole 201 can also be arranged in the liquid outlet through hole 201 of the backflow injection assembly 2, like the structure in the embodiment of the injection assembly of the present application. Namely, when the lower end of the slurry outlet pipe 22 extends out of the slurry outlet through hole 201, the slurry outlet pipe 22 is in a state of injecting liquid; the slurry outlet pipe 22 moves up and down in the slurry outlet through hole 201, indicating that the slurry outlet pipe 22 is extended downward by a downward force and retracted by an upward force.
The backflow injection assembly 2 further comprises a swing rod 24 which is rotatably arranged on the injection plate 20, an upper limit stop 220 and a lower limit stop 221 are arranged on the slurry outlet pipe 22, and the end A of the swing rod 24 is positioned between the upper limit stop 220 and the lower limit stop 221; or the slurry outlet pipe 22 only needs to be provided with the lower limit stop 221, the end A of the swing rod 24 is positioned above the lower limit stop 221, and the spring 25 is arranged between the slurry outlet pipe 22 and the injection plate 20; the a end of the swing lever 24 is restored upward by the elastic force of the spring 25. The rod B end of the swinging 24 with the two structures is arranged in the horizontal strip-shaped groove 30 of the fixed frame 3, and the horizontal moving stroke of the injection plate 20 is larger than the horizontal length of the horizontal strip-shaped groove 30; the shape of the horizontal bar-shaped groove 30 is fitted correspondingly to the swing margin of the swing lever 24. It is assumed that the outlet passage is opened when the pouring plate 20 is moved forward. During the forward movement of the pour plate 20 and the upward movement of the first valve member 26, the oscillating lever 24 moves horizontally with the pour plate 20. When the end B of the swing lever 24 moves to the foremost end of the horizontal bar-shaped groove 30, the swing lever is caught by the horizontal bar-shaped groove 30, the portion of the swing lever 24 rotatably connected to the pouring plate 20 continues forward, the section B of the swing lever 24 swings upward, and the end a of the swing lever 24 swings downward. Of course, a sealing mechanism is also arranged between the slurry outlet through hole 201 and the slurry outlet pipe 22.
The above-described reflow ejection assembly 2 can be applied to various color printers. Preferably on automatic tinting machines that can be simultaneously dispensed. The automatic color mixer comprises a frame 1, wherein a color paste distribution unit is arranged on the frame 1, the color paste distribution unit comprises a color paste barrel for storing color paste, a pump body which is communicated with the color paste barrel in a fluid mode, and a backflow injection assembly 2, the backflow injection assembly 2 is placed into an injection channel and connected with the pump body, and the backflow channel is connected with the color paste barrel; the color mixer is provided with a base 11, the base 11 is provided with an outlet space 12 for cleaning and slurry distribution, and the plurality of backflow injection assemblies 2 are circumferentially distributed on the base 11 of the color mixer along the outlet space 12. Wherein the front end side of the injection plate 20 and the first valve member 26, which is a side surface of a section close to the outlet space 12, is provided with a cleaning tank, and the residual color paste enters the cleaning tank 27 and is cleaned by a cleaning mechanism. The front end of the horizontal bar-shaped groove 30 is also directed towards one end of the outlet space 12. The rest of the functions of the tinting machine can be seen in patent CN 105026307B. The backflow pouring-out components 2 of the color mixer are distributed along the outlet space 12 in a centralized way, a paint mixing cup for receiving color paste can be arranged below the outlet space 12, and when one or more color pastes are needed, the color pastes can be poured out simultaneously through the paste outlet pipe of the pump body. The color paste distribution unit can also comprise a plurality of valve bodies, so that the size of the amount of the color paste injected by each paste outlet pipe is controlled, and each color paste distribution unit can be used for injecting a large amount of the color paste and injecting a small amount of the color paste and can also be used for refluxing. Here, the contact surface between the first valve member 26 and the pour plate 20 in the backflow pour assembly may be inclined or horizontal.
The color mixer needs a special cleaning mechanism 7, a horizontal moving mechanism is arranged on the body of the color mixer, a lifting mechanism is arranged on the horizontal moving mechanism, and a brush 70 rotating around the axis of the lifting mechanism is arranged on the lifting mechanism. The horizontal moving mechanism may be a common linear mechanism, a second screw mechanism 75 driven by a second motor is disposed on the frame 1 of the color mixer, and the lifting mechanism slides on a second screw of the second screw mechanism 75. The brush 70 may be a cylindrical brush 70. When cleaning. The brush enters the outlet space 12 and rotates to clean the first valve member 26 and the leading side of the pour plate 20 of residual color.
The lifting mechanism comprises a mounting plate 71 arranged on the rack, two upper supporting arms 72 are rotatably connected on the mounting plate 71, one ends of the two upper supporting arms 72, which are far away from the mounting plate 71, are respectively connected with a lower supporting arm 74, the two lower supporting arms 74 are rotatably connected on a lower mounting plate 73, and the lower mounting plate 73 is rotatably connected with a rotatable brush 70; a linear telescopic mechanism 76 is arranged between the two upper supporting arms 72 or between the two lower supporting arms 74, and the linear telescopic mechanism 76 is telescopic to drive the lower mounting plate 73 to move up and down. Preferably, the two upper support arms 72 are equal in length and the two lower support arms 74 are equal in length, or the upper support arms 72 and the lower support arms 74 are equal in length, so as to ensure that the brush 70 moves linearly. The upper support arm 72 is hinged to the mounting plate 71, the lower support arm 74 is hinged to the lower mounting plate 73, and the upper and lower support arms are hinged to each other. The two upper support arms 72 are symmetrically disposed. The linear telescopic mechanism can be a cylinder mechanism or a screw rod mechanism and the like. The linear actuator 76 is pivotally connected to the upper support arm 72 or the lower support arm 74 or may be articulated.
The upper support arm 72 and the lower support arm 74 are hinged with each other, that is, the lower end of the upper support arm 72 and the upper end of the lower support arm 74 are rotatably disposed on hinge shafts, and the two hinge shafts are respectively connected to the telescopic end and the fixed end of the linear telescopic mechanism 76.
The end of the two upper supporting arms 72, which is positioned on the mounting plate 71, is provided with meshing teeth 77 which are distributed along the circumference and centered on the rotating shaft of the upper supporting arms 72 rotating around the mounting plate 71, and the meshing teeth 77 of the two upper supporting arms 72 are meshed and clamped with each other.
The two lower support arms 74 are provided at one end of the lower mounting plate 73 with engaging teeth 77 distributed along the circumference around the rotational axis of the lower support arms 74 about the lower mounting plate 73, and the engaging teeth 77 of the two lower support arms 74 are engaged with each other.
A telescopic multi-section sleeve 78 is rotatably arranged on the mounting plate 71, and the multi-section sleeve 78 is driven by a driving mechanism to rotate; multi-section sleeve 78 comprises at least two sections of sleeves, with adjacent sleeves being slidably connected, where the sleeves may be hollow rods or other suitable shapes; the end of the multi-section sleeve 78 holds the brush 70. The mounting plate 71 is provided with a third motor, and the third motor drives the first section of sleeve to rotate through a driving mechanism. The first section of the sleeve does not move relative to the mounting plate 71, but only rotates relative to the mounting plate. The second section of sleeve is arranged in the first section of sleeve in a sliding manner, the third section of sleeve is arranged in the second section of sleeve in a sliding manner, and a plurality of sections of sleeves are sequentially arranged. A first sliding groove is formed in the first section of sleeve, a first sliding block is arranged at the upper end of the second section of sleeve, and the first sliding block slides in the first sliding groove. A second sliding groove is formed in the second section of sleeve, a second sliding block is arranged on the third section of sleeve, and the second sliding block slides in the second sliding groove. The tail end of the last sleeve, namely the multi-section sleeve 78, is rotatably connected with the lower mounting plate through a bearing, and a fixing sleeve for preventing the lower mounting plate 73 from sliding on the sleeve is arranged below the lower mounting plate 73 of the last sleeve. The brush 70 is fixedly disposed at the end of the multi-section sleeve 78. Alternatively, the brush 70 is rotatably mounted on the lower mounting plate 73 by a rotating shaft, and the multi-section sleeve 78 is fixedly connected to the rotating shaft of the brush 70. Other arrangements are possible, however, as long as it is achieved that the brush 70 can move both linearly with the lower mounting plate and rotationally with the multi-section sleeve 78. The cleaning mechanism in the application can also be applied to other types of color mixing machines, and can be used for cleaning color paste, not necessarily the color mixing machine which is injected out simultaneously.
