Rotary table assembly and paint mixing machine

Abstract

Rotary table assembly, characterized in that the rotary table assembly comprises a work table (210) and a rotary table (220) rotatably connected to the work table (210), wherein the rotary table (220) is provided with a plurality of liquid ink reservoir mounting locations (221) on its upper surface, which are distributed along a circumference, and wherein the axis about which the rotary table (220) rotates passes through the center of the circumference, and wherein a number of boundary elements (230) corresponding to the number of liquid ink reservoir mounting locations (221) are also distributed along the circumference, wherein the liquid ink reservoir mounting locations (221) are spaced apart from one another by the boundary elements (230), and wherein the boundary element (230) has an arcuate surface (231) extending along the axis, and wherein the arcuate surface (231) is configured toto limit the radial movement of a liquid paint barrel assembly (300) with respect to the circumference of the circle in the direction of the center of the circle.

Description

Technical field

[0001] The present disclosure relates to the field of ink production equipment, and in particular to a rotary table assembly and a color mixing machine. Technical background

[0002] The basic principle behind various automotive paints, varnishes, latex paints, and inks is to mix different liquid colors and additives according to a formulation to create the desired colors. In addition to the traditional manual mixing method using color mixers, various types of color mixing systems are now widely used. These systems typically include several liquid color drums and a material handling module that, according to the formulation, dispenses liquid colors from different drums and mixes them in a designated container to obtain the desired colors.

[0003] Nowadays, the number of customers on the market who want to order various personalized paint products is increasing. To meet this demand, the paint mixing system must be able to store several drums of liquid paint under a constant environment to ensure that the liquid paints do not deteriorate due to repeated contact with air. Furthermore, large-capacity liquid paint raw material tanks are disadvantageous for use in such scenarios. Repeatedly pouring liquid paint from a large-capacity tank into a small-capacity drum can lead to a deterioration in the quality of the liquid paints, causing them to stick to the wall and solidify, resulting in wasted paint.One type of paint mixing system on the market comprises a rectangular liquid paint drum storage cabinet in which several liquid paint drums are arranged in a matrix pattern on a single plane. An actuating mechanism for dispensing the liquid paint from the drums is located on one side of the cabinet. To supply the liquid paint drums to the actuating mechanism, a set of robotic arms is also required within the cabinet. This arm is designed to have a three-axis XYZ motion mechanism, whereby the lengths of the movement paths along the X and Y axes could increase with the number of liquid paint drums, resulting in longer movement times for the liquid paint drums within the cabinet.Furthermore, the distance varies due to the matrix-like distribution of the liquid paint barrels, around which the robot arm apparatus is supposed to move in order to store or remove liquid paint barrels at different positions, which makes the movement of the mechanical robot arm complex and thus the construction of the paint mixing machine complicated. Subject of the utility model

[0004] The purpose of this revelation is to provide a rotary table assembly and a color mixing machine to simplify the construction of the color mixing machine.

[0005] The embodiments of this disclosure are implemented as follows: In a first aspect, the embodiments of this disclosure provide a rotary table assembly, wherein the rotary table assembly comprises a worktable and a rotary table rotatably connected to the worktable, and wherein the rotary table is provided with a plurality of liquid paint barrel mounting locations on its upper surface, distributed along a circular circumference, and wherein the axis about which the rotary table rotates passes through the center of the circular circumference.

[0006] A number of boundary elements corresponding to the number of liquid paint barrel mounting locations are also distributed along the circumference of the circle, wherein the liquid paint barrel mounting locations are spaced apart from each other by the boundary elements, and wherein the boundary element has an arc-shaped surface extending along the direction of the axis and is designed to restrict the radial movement of a liquid paint barrel assembly in the direction of the center of the circle with respect to the circumference of the circle.

[0007] In the above technical solution, the liquid ink drum mounting point is designed for positioning the liquid ink drum assembly. Since the liquid ink drum mounting points are distributed along the circumference of the rotary table, each mounting point would pass by the same position when the rotary table is rotated. Therefore, when using the rotary table assembly provided by the above technical solution on a paint mixing machine, the rotary table can be rotated, and a liquid ink drum gripping mechanism, such as a robot arm, can pick up or position the liquid ink drum assembly at the point where each mounting point would pass. This ensures that when picking up or positioning the assembly, the mounting point is always the same.When each liquid ink barrel assembly is placed, the movement path of the liquid ink barrel gripping mechanism remains the same, which allows for a simplified structure of the liquid ink barrel gripping mechanism and thus simplifies the design of the color mixing machine onto which a rotary table assembly provided by the above technical solution is placed.

[0008] Furthermore, when the liquid ink barrel assembly is placed into the liquid ink barrel mounting position by the liquid ink barrel gripping mechanism, the assembly can be positioned insofar as a number of limiting elements corresponding to the number of mounting positions are provided, and the arcuate surface of the limiting element restricts the radial movement of the liquid ink barrel assembly towards the center of the circle, thereby improving the positional accuracy of the liquid ink barrel assembly and thus the accuracy when picking up and placing the liquid ink barrel assembly. Moreover, the arcuate surface extends along the direction of the rotary table's axis of rotation and can thus restrict the movement of the liquid ink barrel assembly towards the center of the circle.In addition, the arc-shaped surface has a certain size along the direction of extension of the axis of rotation and a larger contact area with the liquid ink barrel assembly, which reduces the damage to the liquid ink barrel assembly to a certain extent.

[0009] In combination with the first aspect, the boundary element in some optional versions comprises a first arc-shaped plate and a second arc-shaped plate connected to each other, with the first arc-shaped plate and the second arc-shaped plate each having the arc-shaped surface.

[0010] In this process, one of the two adjacent boundary elements is referred to as a first boundary element and the other of the two adjacent boundary elements is referred to as a second boundary element, with the liquid paint barrel installation point between the first and second boundary elements being referred to as a first liquid paint barrel installation point.

[0011] The arc-shaped surface of the first arc-shaped plate located in the first boundary element and the arc-shaped surface of the second arc-shaped plate located in the second boundary element together restrict the radial movement of the liquid paint barrel assembly located in the first liquid paint barrel installation site towards the center of the circle with respect to the circumference of the circle.

[0012] In the above technical solution, the movement of the liquid paint barrel assembly from the liquid paint barrel installation point towards the center of the circle is jointly restricted by the first arcuate plate of the first boundary element and the second arcuate plate of the second boundary element, thereby reducing the processing difficulty of the boundary element.

[0013] In combination with the first aspect, in some optional versions the arc-shaped surface represents a circularly circumferential surface and the installation points of the first boundary element and the second boundary element are configured such that the arc-shaped surface of the first arc-shaped plate located in the first boundary element and the arc-shaped surface of the second arc-shaped plate located in the second boundary element lie on the same circular cylindrical surface.

[0014] In the above technical solution, because the arc-shaped surfaces in a boundary element each represent a circularly circumferential surface and the arc-shaped surface of the first arc-shaped plate in the first boundary element lies on the same circular cylindrical surface as the arc-shaped surface of the second arc-shaped plate in the second boundary element, the first boundary element and the second boundary element together have a limiting effect on the liquid paint barrel assembly.

[0015] In combination with the first aspect, the limiting element in some optional embodiments further comprises a positioning piece, wherein the positioning piece is connected to the rotary table, and wherein the first arcuate plate and the second arcuate plate are each connected to the positioning piece, and wherein the positioning piece extends radially with respect to the circumference of the circle, and wherein the positioning piece in the first limiting element and the positioning piece in the second limiting element jointly restrict the circumferential movement with respect to the circumference of the liquid ink barrel assembly located in the first liquid ink barrel installation site.

[0016] In the above technical solution, the positioning element in the limiting element extends radially around the circumference. When the rotary table rotates, the change in position of the liquid ink barrel assembly can be reduced by the positioning elements of the first and second limiting elements jointly restricting the movement of the liquid ink barrel assembly in the circumferential direction around the circumference. This allows the liquid ink barrel gripping mechanism to pick up the liquid ink barrel assembly at a specific installation location and increases the accuracy of the picking process.

[0017] In combination with the first aspect, the boundary element in some optional versions further comprises a side plate, wherein the first arc-shaped plate and the second arc-shaped plate are each connected to a side edge of the side plate, forming a Y-shaped structure in a cross-sectional area, and wherein another side edge of the side plate is connected to the positioning piece.

[0018] In the above technical solution, the side plate can function as a reinforcing rib between the first arc-shaped plate or the second arc-shaped plate and the positioning piece by connecting the first arc-shaped plate or the second arc-shaped plate to the positioning piece. This reduces the possibility of significant deformation of the first arc-shaped plate and the second arc-shaped plate during positioning of the liquid ink barrel assembly. This, in turn, increases the positioning accuracy of the liquid ink barrel assembly, thus improving the accuracy when picking up or setting down the liquid ink barrel assembly.

[0019] In combination with the first aspect, in some optional versions the size of the side plate along the axis gradually decreases in the direction away from the first arc-shaped plate.

[0020] In the above technical solution, the side plate occupies a comparatively small space, which can reduce the installation space occupied by the rotary table assembly and reduce the possibility of interference between the side plate and other structures.

[0021] In combination with the first aspect, in some optional versions the size of the arc-shaped area along the axis is no less than 10 cm. In the above technical solution, the size of the arc-shaped area along the axis is comparatively large, and the contact area with the liquid ink drum assembly is therefore larger, which can reduce damage to the liquid ink drum assembly to some extent and improve its positioning.

[0022] In combination with the first aspect, in some optional versions the worktable is further connected to a protective plate, wherein the protective plate has an arc-shaped structure and surrounds the liquid paint barrel installation point on the outside, and wherein the upper edge of the protective plate is higher than the upper surface of the turntable.

[0023] In the above technical solution, the protective plate encloses the liquid ink drum mounting location on the outside, and the upper edge of the protective plate is higher than the top surface of the rotary table. Therefore, the protective plate prevents the liquid ink drum assembly, mounted on the top surface of the rotary table, from moving radially away from the center of the circle. This reduces the positional change of the liquid ink drum assembly and allows the liquid ink drum gripping mechanism to pick up the assembly more accurately at the mounting location. Thus, the accuracy of the liquid ink drum assembly picking process is increased.

[0024] In combination with the first aspect, in some optional versions the protective plate is designed as an enclosing ring-shaped structure with a recess, the recess being configured to allow the liquid paint barrel assembly to pass through.

[0025] In the above-mentioned technical solution, the liquid ink barrel assembly can be received or placed via the recess of the ring-shaped structure, thereby simplifying the movement of the liquid ink barrel gripping mechanism and simplifying the structure of a paint mixing machine having the above-mentioned rotary table assembly.

[0026] In a second aspect, the embodiments of the present disclosure provide a color mixing machine, wherein the color mixing machine comprises a liquid color drum assembly, a liquid color drum gripping mechanism, a drive device and a rotary table assembly according to the first aspect, wherein the drive device is mounted on the work table and is connected to the rotary table in a drive-related manner, and wherein the liquid color drum assembly is arranged at the liquid color drum installation location, and wherein the color mixing machine is configured such that the liquid color drum gripping mechanism can be inserted into the recess in order to remove the liquid color drum assembly from the recess.

[0027] In the paint mixing machine provided by the above technical solution, to pick up or place the liquid paint drum assembly via the recess in the protective plate using the liquid paint drum gripping mechanism, a predetermined liquid paint drum mounting position can first be rotated by the rotary table to a specific position near the liquid paint drum gripping mechanism. This allows the liquid paint drum gripping mechanism to pick up the liquid paint drum assembly from the predetermined mounting position through this recess, or to place the liquid paint drum assembly into the predetermined mounting position. It is possible to pick up or place the liquid paint drum assembly in this way for different mounting positions, thus simplifying the movement of the liquid paint drum gripping mechanism and consequently simplifying the design of the paint mixing machine.Insofar as a limiting element is provided on the rotary table assembly to restrict the position of the liquid ink drum assembly, the liquid ink drum assembly can be positioned and its positional change on the rotary table can be reduced. This allows the liquid ink drum gripping mechanism to pick up or place the liquid ink drum assembly more precisely, thereby increasing the accuracy of picking up or placing the liquid ink drum assembly. Description of drawings

[0028] To further explain the technical solutions of the embodiments of this disclosure, the drawings required in these embodiments will be briefly presented below. It should be understood that the following drawings represent only some of the embodiments of this disclosure and are therefore not to be regarded as limiting the scope. Further designations relating to this disclosure are available to those skilled in the art based on these drawings without any inventive step being required. Fig. 1 is a schematic partial representation of the structure of the color mixing machine provided in an embodiment of the present disclosure; Fig. Figure 2 is a schematic representation in a first view showing a mounted liquid ink barrel assembly on the rotary table assembly provided in the embodiment of the present disclosure; Fig. Figure 3 is a schematic representation in a second view showing a liquid ink barrel assembly mounted on the rotary table assembly provided in the embodiment of the present disclosure; Fig. Figure 4 is a perspective view of the rotary table assembly provided in the embodiment of the present disclosure; and Fig. Figure 5 is a top view of the rotary table assembly provided in the embodiment of the present disclosure.

[0029] Reference symbols: 100-Frame; 200-Rotary table assembly; 210-Work table; 220 Rotary table; 221-Liquid paint drum mounting location; 230-Limiting element; 231-Arc-shaped surface; 232-First arc-shaped plate; 233-Second arc-shaped plate; 234-Positioning piece; 235 Side plate; 240-Protective plate; 241-Recess; 250-Stirring mechanism; 300-Liquid paint drum assembly; 500-Drive unit. Detailed description of embodiments

[0030] To further explain the problem, the technical solutions, and the advantages of the embodiment of the present disclosure, the technical solutions in the embodiments of the present disclosure are clearly and completely described with reference to the figures in the embodiments of the present disclosure. Naturally, the described embodiments represent a subset of the embodiments of the present disclosure, but not all of them. As a rule, the components of the embodiments of the present disclosure, which are described and illustrated in the figures here, can be arranged and designed in various configurations.

[0031] Therefore, the detailed description of the embodiments of the present disclosure provided in the figures is not intended to limit the claimed circumference of the present disclosure, but merely presents selected embodiments of the present disclosure. All other embodiments that a person skilled in the art can achieve without inventive step based on the embodiments in the utility model fall within the claimed circumference of the present disclosure.

[0032] It should be noted that similar reference symbols and letters denote similar objects in the following figures. Therefore, if an object is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] It should be noted in the description of the present disclosure that the orientation or position relationship indicated by terms such as "center", "top", "bottom", "vertical", "horizontal", "inside", "outside", or the like is based on the orientation or position relationship shown in the figures or refers to the orientation or position relationship in which the product is usually arranged during use according to the utility model. Furthermore, terms such as "first", "second", "third" serve only to differentiate the description and are not to be understood as indicating or implying any relative importance.

[0034] Furthermore, terms like "horizontal," "vertical," etc., do not mean that the parts must be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" simply means that the orientation is described as more horizontal than "vertical," and does not mean that this structure must be perfectly horizontal, but can be slightly inclined.

[0035] It should further be noted in the description of the present disclosure that, unless expressly specified and defined otherwise, terms such as "arranged," "attached," "coupled," and "connected" are to be understood in a broad sense. This can refer to a fixed connection, a detachable connection, or a one-piece connection; a mechanical connection or an electrical connection; a direct connection, an indirect connection via an intermediate medium, or an internal connection between the two elements. The specific meaning of the aforementioned terms within the context of the present disclosure will be readily apparent to the person skilled in the art.

[0036] The present disclosure provides a color mixing machine in which a simplified construction of the color mixing machine is made possible by simplifying the movement of a liquid color barrel gripping mechanism.

[0037] As in Fig. 1, Fig. 2 to Fig. As shown in Figure 3, the color mixing machine provided by the present disclosure comprises a liquid ink drum assembly 300, a liquid ink drum gripping mechanism, a rotary table assembly 200, and a drive unit 500. The rotary table assembly 200 further comprises a work table 210 and a rotary table 220, which is rotatably connected to the work table 210. The work table 210 is stationary, for example, connected to the frame 100 of the color mixing machine, and remains stationary relative to the floor during operation of the color mixing machine. The rotary table 220 is drive-connected to the drive unit 500, and thus the rotation of the rotary table 220 is driven by the operating drive unit 500. The rotary table 220 has a plurality of liquid ink drum mounting positions 221, which are distributed along a circumference, and the liquid ink drum assembly 300 can be placed into the liquid ink drum mounting position 221.The liquid paint barrel installation locations 221 are distributed along a circumference on the top of the turntable 220, and the center of the circumference is located on the axis of rotation of the turntable 220. Fig. 1, Fig. 2, Fig. 3, Fig. 4 to Fig. In Figure 5, the rotary table 220 is a circular disk-shaped component, and its axis of rotation is perpendicular to the top surface of the rotary table 220. During the rotation of the rotary table 220, the path of movement remains identical for each liquid ink drum mounting position 221, and accordingly, the path of movement also remains identical for each liquid ink drum assembly 300. This rotates the designated liquid ink drum mounting position 221 into a position in the immediate vicinity of the liquid ink drum gripping mechanism for picking up or setting down a liquid ink drum assembly 300. It is easy to understand that, prior to picking up by the liquid ink drum gripping mechanism, the designated liquid ink drum mounting position 221 is selected by the operator or the control programs based on the desired arrangement position of the liquid ink drum assembly 300 or on the unoccupied liquid ink drum storage positions.

[0038] Since the path of movement of each liquid ink drum mounting position 221 remains identical, and the path of movement of each liquid ink drum assembly 300 also remains identical, in the aforementioned color mixing machine according to this disclosure, the rotation of the rotary table assembly 200 can be driven by the drive device 500 when both picking up and placing the liquid ink drum assembly 300 relative to each liquid ink drum mounting position 221, so that the predetermined liquid ink drum mounting position 221 is rotated into a position in the immediate vicinity of the liquid ink drum gripping mechanism. Subsequently, the liquid ink drum assembly 300 is picked up from or placed into the predetermined liquid ink drum mounting position 221 by the liquid ink drum gripping mechanism. Therefore, the movement of the liquid ink drum gripping mechanism is independent of the location where the liquid ink drum assembly 300 is picked up or placed.is switched off, which simplifies the movement of the liquid paint barrel gripping mechanism and thus the construction of the paint mixing machine.

[0039] In some embodiments, the motion transmission between the rotary table 220 and the drive unit 500 is effected by a gear drive. In the Fig. In the embodiment shown in Figure 3, a toothed ring is provided on the underside of the rotary table 220, and an electric motor mounted on the worktable 210 serves as the drive device 500. A gear engaging with the toothed ring connects to the output shaft of the electric motor, and the rotation of the rotary table 220 is achieved by the rotation of the electric motor. Furthermore, the liquid ink reservoir mounting point 221 is located on the top of the rotary table 220; thus, the liquid ink reservoir assembly 300 is placed on the top of the rotary table 220.

[0040] To achieve greater accuracy when picking up and setting down the liquid ink reservoir assembly 300, in some embodiments of the present disclosure, a number of boundary elements 230 are distributed along the circumference of the circle, which is distributed along the liquid ink reservoir mounting locations 221, wherein the number of boundary elements corresponds to the number of liquid ink reservoir mounting locations 221. The liquid ink reservoir mounting locations 221 are spaced apart from the boundary elements 230, that is, on the circumference of the circle, which is distributed along the liquid ink reservoir mounting locations 221, there is one boundary element 230 between each two adjacent liquid ink reservoir mounting locations 221, and there is one liquid ink reservoir mounting location 221 between each two adjacent boundary elements 230.The limiting element 230 has an arc-shaped surface 231 that extends along the axis of rotation of the rotary table 220 and prevents the liquid ink drum assembly 300 from moving radially towards the center of the circle with respect to its circumference. This allows the liquid ink drum assembly 300 to be positioned when it is placed into a liquid ink drum mounting location 221 by the liquid ink drum gripping mechanism. This improves the accuracy of the placement process of the liquid ink drum assembly 300 and ensures its positional accuracy within the liquid ink drum mounting location 221. Consequently, the accuracy of the picking-up process of the liquid ink drum assembly 300 from the liquid ink drum mounting location 221 is also increased.

[0041] In the Fig. In the embodiment shown in Figure 4, the axis of rotation of the rotary table 220 extends in the vertical direction, and accordingly, the arcuate surface 231 extends in the vertical direction. That is, the curve formed by the intersection of the arcuate surface 231 with the horizontal plane is an arcuate line, and the curve formed by the intersection of the arcuate surface 231 with the vertical plane is a straight line. It is not difficult for a person skilled in the art to understand that the arcuate surface 231 should have a certain size in the direction of the axis of rotation of the rotary table 220 because, when the liquid ink barrel assembly 300 is placed into the liquid ink barrel mounting location 221 by the liquid ink barrel gripping mechanism, the arcuate surface 231 can position the liquid ink barrel assembly 300. As shown in Figure 4, the arcuate surface 231 can position the liquid ink barrel assembly 300. Fig. 2 and Fig. As shown in Figure 3, the contact area between the arc-shaped surface 231 and the liquid ink reservoir assembly 300 is therefore relatively large, which reduces damage to the liquid ink reservoir assembly 300 to a certain extent. Furthermore, the size of the arc-shaped surface 231 in the direction of the axis of rotation of the rotary axis 220 is not less than 10 cm. The size can also be 10 cm to 20 cm, such as 10 cm, 12 cm, 14 cm, 16 cm, 18 cm, and 20 cm. In other embodiments, the size can also be 25 cm, 30 cm, etc.

[0042] In some embodiments of the present disclosure, the limiting element 230 comprises a structure as shown in Fig. 2, Fig. 4 and Fig. Figure 5 shows a first arcuate plate 232 and a second arcuate plate 233 connected to each other. Both the first arcuate plate 232 and the second arcuate plate 233 have the arcuate surface 231, which is configured to restrict the movement of the liquid ink barrel assembly 300 along the radial direction of the circumference to the center of the circle. Furthermore, it is assumed that one of the two adjacent boundary elements 230 is a first boundary element and the other a second boundary element, and that the liquid ink barrel mounting location 221 between the first and second boundary elements is a first liquid ink barrel mounting location.The arcuate surface 231 of the first arcuate plate 232, located in the first limiting element, and the arcuate surface 231 of the second arcuate plate 233, located in the second limiting element, together restrict the movement of the liquid ink drum assembly 300, provided in the first liquid ink drum mounting location, along the radial direction of the circumference to the center of the circle. In this embodiment, the movement of the liquid ink drum assembly 300, located between the two adjacent limiting elements 230, is jointly restricted by the two adjacent limiting elements 230, thereby reducing the processing difficulty of the limiting elements 230.

[0043] Furthermore, the arc-shaped surface 231 represents a circularly circumscribing surface; therefore, the curve formed by the intersection of the arc-shaped surface 231 with the horizontal surface is a circular arc. As in Fig. As shown in Figure 5, the arcuate surface 231 of the first arcuate plate 232 and the arcuate surface 231 of the second arcuate plate 233 are located on the same circular cylindrical surface after the first boundary element and the second boundary element are connected to the rotary table 220.

[0044] In the above embodiment, as in Fig. As shown in Figure 5, in a boundary element 230, the first arcuate plate 232 and the second arcuate plate 233 form a substantially V-shaped structure. In other embodiments, the arcuate surface 231 of the first arcuate plate 232 and the arcuate surface 231 of the second arcuate plate 233 in a boundary element 230 can have a smooth transition and form a continuous arcuate surface; that is, the first arcuate plate 232 and the second arcuate plate 233 in the same boundary element 230 form a structure that is substantially V-shaped.

[0045] Furthermore, in some embodiments, the limiting element 230 also includes a positioning piece 234 for limiting the movement of the liquid ink barrel assembly 300 in the radial direction. As in Fig. 2 and Fig. As shown in Figure 5, the positioning piece 234 is connected to the rotary table 220, and the first arcuate plate 232 and the second arcuate plate 233 are each connected to the positioning piece 234. The positioning piece 234 extends radially with respect to the circumference around which the liquid ink barrel mounting locations 221 are distributed, with the positioning pieces 234 in the first and second limiting elements restricting the circumferential movement of the liquid ink barrel assembly 300 on each side in the circumferential direction. By restricting the movement of the liquid ink barrel assembly 300 in the circumferential direction, the liquid ink barrel gripping mechanism can pick up a liquid ink barrel assembly 300 located in the liquid ink barrel mounting location 221 more accurately, thereby improving the accuracy of the picking process of the liquid ink barrel assembly 300.

[0046] Furthermore, in some embodiments, the limiting element 230 also comprises a side plate 235 that connects the arcuate plate (including the first arcuate plate 232 and the second arcuate plate 233) to the positioning element 234. That is, both the first arcuate plate 232 and the second arcuate plate 233 are directly connected to the positioning element 234 and also indirectly connected to the positioning element 234 via the side plate 235, in order to increase the stiffness of the overall structure of the limiting element 230 and to reduce the deformation of the limiting element 230 under an external force. As shown in Fig. 4 and Fig. As shown in Figure 5, both the first arcuate plate 232 and the second arcuate plate 233 are connected to a side edge of the side plate 235, such that the first arcuate plate 232, the second arcuate plate 233, and the side plate 235 form a Y-shaped structure in a cross-sectional area. It is not difficult to understand that this cross-sectional area is a cross-sectional area perpendicular to the extension direction of the arcuate surface 231. Another adjacent side edge of the side plate 235 is connected to the positioning piece 234. In the Fig. 4 and Fig. In the structures shown in Figure 5, the side plate 235 can function as a reinforcing rib. While the liquid ink barrel gripping mechanism places the liquid ink barrel assembly 300 into a liquid ink barrel mounting location 221, the first arcuate plate 232 and the second arcuate plate 233 may come into contact with the liquid ink barrel assembly 300. Due to the presence of the side plate 235, the deformation at the end of the first arcuate plate 232 and the second arcuate plate 233, respectively, facing away from the positioning element 234, can thus be reduced.

[0047] To reduce the possibility of interference between the side plate 235 and other structures (such as the liquid paint barrel gripping mechanism), the size of the side plate 235 also gradually decreases along the axis of the rotary table 220 (i.e., the direction of extension of the arcuate surface 231) in the direction away from the first arcuate plate 232. That is, as in Fig. As shown in Figure 2, the side plate 235 is a triangular component.

[0048] In the Fig. 2, Fig. 3, Fig. 4 to Fig. In the embodiments shown in Figure 5, the rotary table assembly 200 further comprises a protective plate 240, which is connected to the worktable 210. The protective plate 240 has an arc-shaped structure and encloses the liquid ink reservoir mounting locations 221 from the outside, with the upper surface of the protective plate 240 being higher than the upper surface of the rotary table 220. Furthermore, the connection point between the protective plate 240 and the worktable 210 is located on the outside of the rotary table 220, and the surface of the protective plate 240 that serves to limit the movement of the liquid ink reservoir assembly 300 is located inside with respect to the edge of the rotary table 220. In the embodiment shown in Figure 5, the protective plate 240 is located on the outside of the rotary table 220. Fig. In the embodiment shown in Figure 3, the protective plate 240 has a circular circumferential surface arranged in a vertical direction, the axis of which coincides with the axis of rotation of the rotary table 220. The radius of this circular circumferential surface is larger than the radius of the circumference on which the liquid color installation points 221 are located, and less than the radius of the rotary table 220.

[0049] It is not difficult to understand that the protective plate 240 can prevent the liquid ink drum assembly 300 from moving radially away from the center of the circumference under the influence of centrifugal force, thereby reducing the change in position of the liquid ink drum assembly 300, which allows the liquid ink drum gripping mechanism to pick up the liquid ink drum assembly 300 located in the liquid ink drum mounting location 221 more accurately and improves the accuracy of the picking process of the liquid ink drum assembly 300.

[0050] Furthermore, in the Fig. In the embodiment shown in Figure 3, the protective plate 240 is designed as an enclosing ring-shaped structure with a recess 241 whose size allows the liquid ink drum assembly 300 to pass through. It is not difficult for a person skilled in the art to understand that during the picking-up or setting-down process of the liquid ink drum assembly 300 by the liquid ink drum gripping mechanism, the liquid ink drum assembly 300 can pass through this recess 241, thus eliminating the need to complicate the movement of the liquid ink drum gripping mechanism to avoid the protective plate 240, making the movement of the liquid ink drum gripping mechanism comparatively simple. It is also easy to understand that the size of the recess 241 should allow the liquid ink drum gripping mechanism to pass through in order to pick up or set down the liquid ink drum assembly 300 from the liquid ink drum mounting location 221.

[0051] In the Fig. 2, Fig. 3, Fig. 4 to Fig. In the embodiments shown in Figure 5, the protective plate 240 is a longer ring structure having a recess 241, which consists of several shorter arc-shaped structures to facilitate the processing of the protective plate 240. In other embodiments, the protective plate 240 can also be an integral ring structure with a recess 241.

[0052] Furthermore, in some embodiments of the present disclosure, the liquid ink drum assembly 300 comprises a liquid ink drum and a stirring shaft connected to the liquid ink drum, wherein one end of the stirring shaft is located inside the liquid ink drum and the other end of the stirring shaft is located outside the liquid ink drum. A stirring mechanism 250 is provided at each liquid ink drum mounting location 221. When the liquid ink drum assembly 300 is placed at the liquid ink drum mounting location 221, the stirring shaft of the liquid ink drum assembly 300 is connected to the stirring mechanism 250. During the rotation of the rotary table 220, the stirring mechanism 250 drives the rotation of the stirring shaft to stir the ink inside the liquid ink drum, thereby preventing the ink from solidifying.

[0053] The foregoing merely presents preferred embodiments of this disclosure and is not intended to limit it. Various changes and modifications to this disclosure are conceivable to a person skilled in the art. All changes, equivalent replacements, improvements, etc., made within the spirit and principles of this disclosure fall within the scope of protection of this disclosure.

Claims

[1] Rotary table assembly, characterized bythat the rotary table assembly comprises a worktable (210) and a rotary table (220) rotatably connected to the worktable (210), the rotary table (220) being provided with a plurality of liquid ink reservoir mounting locations (221) on its upper surface, distributed along a circumference, and wherein the axis about which the rotary table (220) rotates passes through the center of the circumference, and that a number of boundary elements (230) corresponding to the number of liquid ink reservoir mounting locations (221) are also distributed along the circumference, the liquid ink reservoir mounting locations (221) being spaced apart from the boundary elements (230), and wherein the boundary element (230) has an arcuate surface (231) extending along the axis, and wherein the arcuate surface (231) is configured toto limit the radial movement of a liquid paint barrel assembly (300) with respect to the circumference of the circle in the direction of the center of the circle. [2] Rotary table assembly according to claim 1, characterized by , that the boundary element (230) comprises a first arcuate plate (232) and a second arcuate plate (233) connected to each other, wherein the first arcuate plate (232) and the second arcuate plate (233) each have the arcuate surface (231), and that one of the two adjacent boundary elements (230) is referred to as a first boundary element and the other of the two adjacent boundary elements (230) is referred to as a second boundary element, wherein the liquid paint barrel installation site (221) between the first and second boundary elements is referred to as a first liquid paint barrel installation site, and that the arc-shaped surface (231) of the first arc-shaped plate (232) located in the first boundary element and the arc-shaped surface (231) of the second arc-shaped plate (233) located in the second boundary element jointly restrict the radial movement of the liquid color barrel assembly (300) located in the first liquid color barrel installation site in the direction of the center of the circle with respect to the circumference of the circle. [3] Rotary table assembly according to claim 2, characterized by, that the arcuate surface (231) represents a circularly circumferential surface and the installation points of the first boundary element and the second boundary element are configured such that the arcuate surface (231) of the first arcuate plate (232) located in the first boundary element and the arcuate surface (231) of the second arcuate plate (233) located in the second boundary element lie on the same circular cylindrical surface. [4] Rotary table assembly according to claim 2, characterized by, that the limiting element (230) further comprises a positioning piece (234) which is connected to the rotary table (220), wherein the first arcuate plate (232) and the second arcuate plate (233) are each connected to the positioning piece (234), and wherein the positioning piece (234) extends radially with respect to the circumference of the circle, and wherein the positioning piece (234) in the first limiting element and the positioning piece (234) in the second limiting element jointly restrict the circumferential movement of the liquid color barrel assembly (300) located in the first liquid color barrel installation location (221) with respect to the circumference of the circle. [5] Rotary table assembly according to claim 4, characterized by, that the limiting element (230) further comprises a side plate (235), wherein the first arc-shaped plate (232) and the second arc-shaped plate (233) are each connected to a side edge of the side plate (235), forming a Y-shaped structure in a cross-sectional area, and wherein another side edge of the side plate (235) is connected to the positioning piece (234). [6] Rotary table assembly according to claim 5, characterized by , that the size of the side plate (235) along the axis gradually decreases in the direction away from the first arc-shaped plate (232). [7] Rotary table assembly according to claim 1, characterized by , that the size of the arc-shaped area (231) along the axis is not less than 10cm. [8] Rotary table assembly according to any one of claims 1 to 7, characterized by, that a protective plate (240) is also connected to the work table (210), wherein the protective plate (240) has an arc-shaped structure and surrounds the liquid paint barrel installation points (221) on the outside, and wherein the upper edge of the protective plate (240) is higher than the upper surface of the rotary table (220). [9] Rotary table assembly according to claim 8, characterized by , that the protective plate (240) is designed as an enclosing ring-shaped structure with a recess (241), wherein the recess is configured to allow the liquid ink barrel assembly (300) to pass through. [10] Paint mixing machine, characterized by, that the color mixing machine comprises a liquid ink drum assembly (300), a liquid ink drum gripping mechanism, a drive unit (500) and a rotary table assembly (200) according to claim 9, wherein the drive unit (500) is mounted on the work table (210) and is connected to the rotary table (220) via a drive mechanism, and wherein the liquid ink drum assembly (300) is arranged at the liquid ink drum installation point (221), and wherein the color mixing machine is configured such that the liquid color barrel gripping mechanism can be inserted into the recess in order to remove the liquid color barrel assembly (300) from the recess.

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