Manufacturing device and manufacturing method for painting in bottle based on magnetic pigment

Abstract

The invention discloses a manufacturing device and method for a bottle interior painting based on magnetic pigment, and the device comprises a magnetic template assembly, a coloring assembly, a conveying assembly and a master controller, and the magnetic template assembly is used for placing a bottle body to be drawn; the coloring assembly is arranged on one side of the opening of the bottle body on the magnetic template assembly and is used for spraying a magnetic pigment on the inner wall of the bottle body to be drawn; the conveying assembly is arranged above the magnetic template assembly and used for clamping and moving bottle bodies. And the master controller is used for realizing control and operation of the whole device. Automatic mechanical drawing of the picture in the bottle can be achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of handicraft production, and particularly relates to a production device and a production method for bottle inner painting based on magnetic pigments. Background Art

[0002] Bottle painting is a kind of painting art that uses a special small brush to enter the pot through the small mouth of the pot, which can only hold beans, and then paint on the transparent pot wall. It is a traditional folk art that integrates Chinese and Western cultures and is a pocket-sized artwork that embodies the essence of Chinese national art. Bottle painting, as a unique Chinese artwork, has been selected as a diplomatic gift many times to participate in the foreign exchange activities of the Chinese government. Its appearance is exquisite and delicate, and the pictures are lifelike, which is amazing.

[0003] However, traditional bottle painting is purely hand-painted, which requires great technical difficulty, a long production time and high labor costs, resulting in high prices. In addition, due to economic and operational reasons, the team engaged in creation has gradually shrunk and even a gap has appeared. In recent years, some bottle painting schools have even faced the dilemma of no successors. Summary of the invention

[0004] The present invention provides a device and method for producing bottle interior paintings based on magnetic pigments, so as to solve the problems of high production cost and low production efficiency of bottle interior paintings.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: On the one hand, the present application provides a device for making bottle paintings based on magnetic pigments, comprising: A magnetic template assembly is used to place the bottle to be painted, including a magnetic template, a supporting plate and a template base. The magnetic template and the supporting plate are arranged in multiple groups at staggered intervals. The magnetic template is a station for bottle painting, the supporting plate is a station for bottle drying, and the template base supports multiple groups of the magnetic template and the supporting plate; A coloring component is arranged on one side of the bottle opening of the magnetic template component, and is used to spray the magnetic pigment on the inner wall of the bottle to be painted, including a plurality of sets of coloring devices and dryers arranged in a staggered manner, the coloring devices and the magnetic template are arranged in a corresponding position, and are used to extend into the bottle body to realize the painting of the inner wall of the bottle, and the dryer is arranged in a corresponding position to the support plate, and is used to dry the inner wall of the bottle after the painting is completed; A conveying assembly is arranged above the magnetic template assembly and is used to clamp and move the bottle body, comprising a mechanical clamp, a conveyor belt and a lifting frame, wherein the conveyor belt is used to drive the mechanical clamp to move horizontally, and the lifting frame is used to drive the mechanical clamp to move vertically; The main controller is used to control and operate the entire device.

[0006] Furthermore, the coloring component further comprises a plurality of mobile platforms, some of which are provided with rotating gears, the dryer is fixed on the mobile platform not provided with the rotating gears, and the coloring device is fixed on the rotating gears; The utility model also comprises a base and a telescopic rod. The mobile platform is slidably arranged on the base. The telescopic rod controls the mobile platform to move toward or away from the bottle body.

[0007] Furthermore, the colorizer includes a paint head, a support frame and a folding rod, one end of the support frame is fixed to the rotating gear, one end of the folding rod is connected to the support frame, and the other end is connected to the paint head, and the folding rod can drive the paint head to move toward or away from the inner wall of the bottle.

[0008] Furthermore, the colorizer also includes: Paint jars, used to store magnetic paint; A retractable hose, one end of which is connected to the paint head; a pigment chamber, connected to an end of the retractable hose away from the pigment head, for supplying magnetic pigment to the pigment head; A paint tube is connected to the paint cavity and the paint tank.

[0009] Furthermore, the pigment head includes a plurality of capillaries, an ink storage cavity is provided at the input end of the capillary, each of the capillary is connected to the ink storage cavity, and the ink storage cavity is connected to the retractable hose.

[0010] Furthermore, the magnetic template includes a non-magnetic bottom plate, on which a magnetic pattern is arranged, or the magnetic template includes a magnetic bottom plate, on which a magnetic isolation sheet is pasted.

[0011] Furthermore, the bottle body is painted with magnetic pigments, which are magnetic pigments prepared by adding magnetic particles, a surfactant and a carrier liquid into liquid pigments.

[0012] Furthermore, the template base comprises: The positioning rib groove comprises two parallel long strip structures, the bottle body is placed on the positioning rib groove, and the positioning rib groove is provided with a bottle mouth hole for the bottle mouth to extend out; The positioning axle comprises a steel axle and rollers arranged at both ends of the steel axle, and the positioning axle is slidably engaged in the positioning groove; A plate clamp is fixed on the steel shaft, and the plate clamp is fixed on one side opposite to a pair of positioning wheel shafts, and is used for abutting against the limiting bottle body.

[0013] Furthermore, the dryer includes a heating resistance wire and a support rod, one end of the support rod is fixed to the mobile platform, and the other end is connected to the heating resistance wire, and the heating resistance wire is electrically connected to the main controller.

[0014] On the other hand, the present application provides a method for making bottle interior painting based on magnetic pigments, comprising the following steps: S1: Making a magnetic template, separating the original color image of the bottle painting into respective color separation sheets, and making a magnetic template for each color separation according to the color area displayed on the color separation sheet; S2: Fix the magnetic template and fix it on the template base in the coloring order. The coloring order is determined according to the brightness and transparency of the pigment. The principle is that the brighter and more transparent ones are printed first, and the darker and less transparent ones are printed later. S3: pouring magnetic pigments, adding corresponding magnetic pigments into the pigment tanks corresponding to the color separation magnetic templates; S4: placing the bottle body and sending the bottle body to the magnetic template by using the conveying component; S5: Adjust the position of the coloring device, move the coloring device until the pigment head is sent to the top of the magnetic template in the bottle, rotate the gear to rotate the angle of the coloring device, align the liquid outlet surface of the pigment head with the starting end of the pattern, and then open the folding rod to push the pigment head close to the inner surface of the bottle; S6: monochrome coloring: the magnetic pigment is attracted by the magnetic template and drips onto the magnetic pattern area through the capillary on the pigment head to perform monochrome coloring; after the first part of the coloring is completed, the coloring device is rotated to color the next area, and so on, to complete the monochrome coloring of the pattern; S7: Use the conveying assembly to move the bottle to the drying position; S8: Send the dryer into the bottle to dry the magnetic pigment; after drying, the bottle body is transported to the next magnetic template position to color the next single color, and so on, completing all the coloring and drying procedures, and the bottle painting is completed; S9: Repeat the above steps 4-8 for other bottles to achieve assembly line production.

[0015] The present invention can achieve the following beneficial effects: 1. The present invention realizes the mechanized and automated assembly line production of bottle painting through the coordination of magnetic template components, coloring components, and transmission components, as well as the regulation of the general controller. It is suitable for bottle painting of different specifications and types, greatly improving the production efficiency of bottle painting, reducing time and labor costs, realizing the development of traditional skills, increasing output and economic benefits, allowing traditional art to be continued and preserved in a new form, and making it a more popular and more people-friendly mass handicraft.

[0016] 2. The present invention uses magnetic pigments for coloring, and a magnetic template controls the coloring range. The two cooperate to form a pattern. The production is quick, and the magnetic template can be used repeatedly after being produced once. The cost is low and it is suitable for mass production.

[0017] 3. The present invention utilizes a capillary to make a pigment head, and utilizes the suction force of a magnetic template on the magnetic pigment to adsorb the magnetic pigment to the inner surface of the bottle, without the need for additional power, with an accurate coloring range and saving pigment.

[0018] 4. The present invention draws on the principle of four-color printing, and can achieve richer color effects by using four magnetic colors of yellow, magenta, cyan and black, and color separation and coloring are more conducive to automated assembly line production, thereby improving efficiency.

[0019] 5. The present invention connects the pigment head with the rotating gear so that the pigment head can rotate or stay as needed, and accurately controls the coloring range and the stay time. The stay time determines the dripping amount of the magnetic pigment, thereby realizing the control of the coloring concentration. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings and embodiments: Figure 1 It is a schematic plan view of the overall structure of the present invention; Figure 2 It is a side schematic diagram of the overall structure of the present invention; Figure 3 It is a plan view schematic diagram for showing the positional relationship between the magnetic template component and the transmission component of the present invention; Figure 4 It is a plan view schematic diagram of the magnetic template assembly of the present invention; Figure 5 It is a schematic front elevation view of the magnetic template assembly of the present invention; Figure 6 It is a side elevation schematic diagram of the magnetic template assembly of the present invention; Figure 7 It is a schematic diagram of the magnetic template of the present invention; Figure 8 It is a schematic plan view of the coloring component of the present invention; Fig. 9 It is a schematic elevation view of the coloring assembly and the coloring device of the present invention; Fig.10 This is a schematic diagram of the coloring device structure of the present invention; Fig.11 It is a schematic elevation view of the coloring assembly and the drying device of the present invention; Fig.12 It is a plan view of the transmission assembly of the present invention; Fig.13 It is a front elevation schematic diagram of the transmission assembly of the present invention; Fig.14 It is a side elevation schematic diagram of the transmission component of the present invention.

[0021] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. Magnetic template assembly; 2. Coloring assembly; 3. Conveying assembly; 4. Magnetic pigment; 5. Bottle; 6. Master controller; 11. Magnetic template; 12. Support plate; 13. Template base; 21. Base; 22. Mobile platform; 23. Coloring device; 24. Rotating gear; 25. Dryer; 26. Telescopic rod; 27. No. 1 hydraulic transmission mechanism; 28. No. 1 motor; 31. Conveyor belt; 32. Mechanical clamp; 33. Lifting frame; 34. No. 2 motor; 35. No. 2 hydraulic transmission mechanism; 111. No magnetic base plate; 112. Magnetic pattern; 113. Magnetic base plate; 114. Magnetic isolation Plate; 131, base; 132, positioning groove; 133, positioning wheel shaft; 134, plate clamp; 135, centering line; 231, pigment head; 232, retractable hose; 233, pigment cavity; 234, pigment tube; 235, pigment can; 236, support frame; 237, folding rod; 251, heating resistor wire; 252, support rod; 1321, bottom plate; 1322, groove; 1323, positioning strip; 1324, bottle mouth hole; 1331, roller; 1332, steel shaft; 2351, injection hole; 2352, air pressure balance hole; 2311, capillary; 2312, ink storage cavity. DETAILED DESCRIPTION

[0022] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0023] Reference Figures 1 to 3 , a device for making bottle paintings based on magnetic pigments, comprising a magnetic template component 1, a coloring component 2, a conveying component 3, a bottle body 5 and a master controller 6. The magnetic template component 1 is located below the conveying component 3, and the bottle body 5 is placed on it with the painting surface facing downward, providing a pattern template for the production of bottle paintings and controlling the coloring range; the coloring component 2 is located at one side of the opening end of the bottle body 5, and is used to spray the magnetic pigment into the pattern range; the conveying component 3 is located above the bottle body 5, and is used to clamp the bottle body 5 and control the movement of the bottle body 5; the master controller 6 is used to control the operation of the entire device.

[0024] Reference Figure 4The magnetic template assembly 1 is composed of a magnetic template 11, a supporting plate 12 and a template base 13; the magnetic template 11 is a pattern base made of magnetic material; the supporting plate 12 is used to support the bottle body when drying the magnetic pigment; the magnetic template 11 and the supporting plate 12 can be arranged in several groups alternately; the template base 13 is used to place the magnetic template 11 and the supporting plate 12, and can adapt to their different sizes.

[0025] Reference Figures 4 to 6 The template base 13 includes a base 131, a positioning rib groove 132, a positioning wheel shaft 133 and a plate clamp 134. The positioning rib groove 132 is fixed on the base 131, and is two parallel long strip structures, and a long groove is opened on the top; a bottom plate 1321 is provided at the bottom, with a groove 1322 on the inner side, a positioning strip 1323 on the outer side, and a bottle mouth hole 1324 is reserved at the position corresponding to the bottle mouth; the positioning wheel shaft 133 is a steel shaft 1332 with rollers 1331 at both ends, two in a group, and multiple groups can be set, and the rollers 1331 at both ends are respectively stuck in the two grooves 1322; two plate clamps 134 are symmetrically fixed on each group of positioning wheel shafts 133. The positioning wheel shaft 133 can move in the positioning groove 132 to adapt to magnetic templates 11 and supporting plates 12 of different widths; the positioning groove 132, the magnetic template 11 and the supporting plate 12 are all provided with a centering line 135 for determining the position of the magnetic template 11 and the supporting plate 12. After the position is determined, the roller 1331 is fixed by bolts passing through the positioning bar 1323.

[0026] Reference Figures 4 to 6 , the template base 13 is alternately provided with a magnetic template position and a drying position, the magnetic template position is used to fix the magnetic template 11, and the drying position is used to fix the supporting plate 12; according to the direction of conveying the bottle body 5, the magnetic template position is set at the first position, and the drying position is set at the last position.

[0027] The magnetic template 11 can be made by two methods. Figure 7 : First, a magnetic pattern 112 is made on a non-magnetic bottom plate 111. The non-magnetic bottom plate 111 can be made of a thin plate formed of a polymer material, and the magnetic pattern 112 can be made by a device for 3D printing magnetic materials, and the pattern is the part that needs to be colored.

[0028] Second, a magnetic isolation sheet 114 is pasted on the magnetic base plate 113. The magnetic base plate 113 is made of a material that is inherently magnetic, such as a magnet, and the magnetic isolation sheet 114 is made of a magnetic material with high magnetic permeability and has magnetic shielding properties. The magnetic isolation sheet 114 covers the magnetic base plate 113, and the patterned part is cut and hollowed out. The cut magnetic isolation sheet 114 is pasted on the magnetic base plate 113 with a pressure-sensitive adhesive. After use, the magnetic isolation sheet 114 can be peeled off, and the magnetic base plate 113 can be reused.

[0029] Reference Figure 8 and Fig. 9 The coloring component 2 includes a base 21, a mobile platform 22, a coloring device 23, a rotating gear 24, a dryer 25, a telescopic rod 26, a hydraulic transmission mechanism 27 and a motor 28; the coloring device 23 is fixed on the mobile platform 22 by the rotating gear 24, and the dryer 25 is directly fixed on the mobile platform 22; a plurality of coloring devices 23 and dryers 25 can be arranged, and the intervals are fixed, and the fixing order is determined according to the production process and the conveying direction of the conveying component 3; the mobile platform 22 is arranged on the base 21, and is moved forward and backward by the push of the telescopic rod 26, and the telescopic rod 26 is connected to the hydraulic transmission mechanism 27; the rotating gear 24 is connected to the motor 28, and the motor 28 can be fixed on the mobile platform 22; the hydraulic transmission mechanism 27 and the motor 28 are both connected to the main controller 6, and the main controller 6 controls their movement direction, angle and speed.

[0030] Reference Figures 9 and 10 The coloring device 23 includes a pigment head 231, a retractable hose 232, a pigment cavity 233, a pigment tube 234, a pigment tank 235, a support frame 236 and a folding rod 237; wherein the pigment head 231 is connected to one end of the pigment cavity 233 through the retractable hose 232, the other end of the pigment cavity 233 is connected to one end of the pigment tube 234, and the other end of the pigment tube 234 is placed in the pigment tank 235; one end of the support frame 236 is fixed to the rotating gear 24 so that the support frame 236 can rotate, and the other end is provided with a folding rod 237, the folding rod 237 is connected to the pigment head 231 so that the pigment head 231 can move up and down, and the pigment cavity 233 is fixed on the support frame 236; the folding rod 237 obtains power through a No. 1 hydraulic transmission mechanism 27; the pigment tank 235 is used to store magnetic pigments, and is provided with a filling hole 2351 and an air pressure balance hole 2352, and both holes are provided with sealing plugs.

[0031] Reference Fig.10 The pigment head 231 includes a plurality of neatly arranged capillaries 2311, an ink storage cavity 2312 is provided at the upper end of the capillary 2311, the capillary 2311 is communicated with the ink storage cavity 2312, the ink storage cavity 2312 is communicated with the retractable hose 232, and the magnetic pigment is transported from the pigment tank 235 to the capillary 2311 and flows out during coloring.

[0032] Reference Figure 8 and Fig.11 The dryer 25 includes a heating resistor 251 and a support rod 252. The heating resistor 251 is arranged at one end of the support rod 252, and the other end is fixed on the mobile platform 22. The heating resistor 251 is connected to the main controller 6, and its heating power and time can be controlled to quickly dry the colored pattern.

[0033] Reference Figure 12 to Figure 14The conveying assembly 3 includes a conveyor belt 31, a mechanical clamp 32, a lifting frame 33, a No. 2 motor 34 and a No. 2 hydraulic transmission mechanism 35; the conveyor belt 31 is supported by the lifting frame 33 to achieve up and down movement; the mechanical clamp 32 is provided with a plurality of stems, which are installed on the conveyor belt 31 and move with the conveyor belt 31; the conveyor belt 31 is driven by the No. 2 motor 34, and a No. 2 hydraulic transmission mechanism 35 is provided at the base of the lifting frame 33 to provide power for the lifting and lowering of the lifting frame 33 and the opening and closing of the mechanical clamp 32; the No. 2 motor 34 and the No. 2 hydraulic transmission mechanism 35 are both connected to the main controller 6.

[0034] Magnetic pigments are made by adding magnetic particles, surfactants and carrier liquids to liquid pigments. Magnetic particles can be made of common materials such as Fe, Ni, Co, Fe3O4, Fe2O3, etc., or new transparent magnetic materials, such as nano-particle materials made by mixing nano-scale magnetic metal particles of iron-cobalt alloy and insulating material aluminum fluoride; surfactants can be oleic acid, etc.; carrier liquids can be water, kerosene, engine oil, diester, polyphenylene ether, silicone oil, etc. Magnetic particles in magnetic pigments can be prepared according to 1%-10% of the solution content, and surfactants and carrier liquids can be used in a 1:1 ratio. The above ratios can be adjusted according to usage needs and actual conditions.

[0035] The bottle body 5 needs to be made of transparent material, such as glass, resin, etc., and the surface for painting can be frosted to increase the uniformity and firmness of coloring.

[0036] The present application also discloses a method for producing bottle interior painting based on magnetic pigments, using the above-mentioned bottle interior painting production device based on magnetic pigments, comprising the following steps: Step 1: Make a magnetic template 1. Based on the principle of four-color printing, use yellow, magenta, cyan and black to make the bottle painting. Other color matching modes can also be used as needed. First, separate the original color image of the bottle painting into separate color separation sheets, and make each color separation magnetic template 11 according to the color area displayed on the color separation sheet. The method for making the magnetic template 11 has been described in detail in the previous text.

[0037] Step 2: Fix the magnetic template 11. The four-color magnetic template 11 is fixed to the magnetic template position of the template base 13 in sequence according to the coloring order, and then the position of the plate clamp 134 is adjusted to align the center line 135 of each magnetic template 11 with the corresponding center line 135 on the positioning groove 132. After alignment, the roller 1331 is fixed with a bolt through the positioning bar 1323. The coloring order is determined according to the brightness and transparency of the pigment. The principle is that the brightest and most transparent ones are printed first, and the darkest and least transparent ones are printed later.

[0038] Step 3: Pouring magnetic pigment 4. Add the corresponding magnetic pigment 4 into the pigment tank 235 corresponding to the color separation magnetic template 11, and keep the injection hole 2351 and the air pressure balance hole 2352 sealed before coloring begins.

[0039] Step 4: Place the bottle 5. The main controller 6 controls the mechanical clamp 32 on the conveyor belt 31 to clamp the bottle 5, with the bottle mouth facing the coloring component 2. The conveyor belt 31 moves to send the bottle 5 to the top of the first magnetic template. The lifting frame 33 descends and places the bottle 5 on the magnetic template 11. The mechanical clamp 32 is released and the lifting frame 33 rises.

[0040] Step 5: Adjust the position of the coloring device 23. The main controller 6 controls the moving platform 22 in the coloring component 2 to move toward the bottle body 5, and the pigment head 231 of the coloring device 23 is sent to the top of the magnetic template 11 in the bottle. Then, the coloring device 23 is rotated by rotating the gear 24 to align the liquid outlet surface of the pigment head 231 with the starting end of the pattern, and then the folding rod 237 is opened to push the pigment head 231 close to the inner surface of the bottle.

[0041] Step 6: Single color coloring. The air pressure balance hole 2352 is opened, and the magnetic pigment 4, under the attraction of the magnetic template 11, drips into the magnetic pattern area through the capillary 2311 on the pigment head 231 to perform single color coloring. The depth of the coloring is controlled by controlling the residence time of the pigment head 231 at a certain position. After the first part of the coloring is completed, the coloring device 23 is rotated to color the next area, and so on, to complete the single color coloring of the pattern. After the coloring is completed, the air pressure balance hole 2352 can be closed.

[0042] Step 7: Move the bottle 5 to the drying position. After the single-color coloring is completed, the folding rod 237 is folded, the mobile platform 22 moves away from the bottle 5, the coloring device 23 is pulled out, the lifting frame 33 descends, the mechanical clamp 32 clamps the bottle 5, the lifting frame 33 rises, the conveyor belt 31 moves, and the bottle 5 is sent to the top of the first drying position, and the bottle 5 is put down on the supporting plate 12.

[0043] Step 8: Drying the magnetic pigment 4. The mobile platform 22 moves toward the bottle body 5, and the dryer 25 is sent into the bottle for drying. After drying, the bottle body 5 is transported to the next magnetic template position for the next single color coloring, and so on, completing all the coloring and drying procedures, and the bottle painting is completed.

[0044] Step 9: Repeat steps 4-8 for other bottles to achieve efficient and uninterrupted production on the assembly line.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A device for making bottle interior painting based on magnetic pigments, characterized in that: include: A magnetic template assembly (1) is used to place a bottle body (5) to be painted, comprising a magnetic template (11), a supporting plate (12) and a template base (13); the magnetic template (11) and the supporting plate (12) are arranged in multiple groups at staggered intervals; the magnetic template (11) is a work station for painting the bottle body (5); the supporting plate (12) is a work station for drying the bottle body (5); and the template base (13) supports multiple groups of the magnetic template (11) and the supporting plate (12); A coloring component (2) is arranged on one side of the opening of the bottle body (5) on the magnetic template component (1) and is used to spray the magnetic pigment (4) onto the inner wall of the bottle body (5) to be painted, and comprises a plurality of sets of coloring devices (23) and drying devices (25) arranged in an alternating manner, wherein the coloring devices (23) and the magnetic template (11) are arranged in a corresponding position and are used to extend into the bottle body (5) to paint the inner wall of the bottle body (5), and the drying device (25) and the supporting plate (12) are arranged in a corresponding position and are used to dry the inner wall of the bottle body (5) after painting; A conveying assembly (3) is arranged above the magnetic template assembly (1) and is used to clamp and move the bottle body (5), comprising a mechanical clamp (32), a conveyor belt (31) and a lifting frame (33), wherein the conveyor belt (31) is used to drive the mechanical clamp (32) to move horizontally, and the lifting frame (33) is used to drive the mechanical clamp (32) to move vertically; The main controller (6) is used to control and operate the entire device.

2. The device for making bottle interior painting based on magnetic pigment according to claim 1, characterized in that: The coloring component (2) further comprises a plurality of mobile platforms (22), some of the mobile platforms (22) being provided with rotating gears (24), the dryer (25) being fixed on the mobile platform (22) not provided with the rotating gear (24), and the coloring device (23) being fixed on the rotating gear (24); It also comprises a base (21) and a telescopic rod (26), wherein the mobile platform (22) is slidably arranged on the base (21), and the telescopic rod (26) controls the mobile platform (22) to move towards a direction close to the bottle body (5) or away from the bottle body (5).

3. The device for making bottle interior painting based on magnetic pigment according to claim 2, characterized in that: The coloring device (23) comprises a pigment head (231), a support frame (236) and a folding rod (237); one end of the support frame (236) is fixed to the rotating gear (24); one end of the folding rod (237) is connected to the support frame (236) and the other end is connected to the pigment head (231); and the folding rod (237) is capable of driving the pigment head (231) to move in a direction close to or away from the inner wall of the bottle body (5).

4. The device for making bottle interior painting based on magnetic pigment according to claim 3 is characterized in that: The colorizer (23) further comprises: A paint tank (235) for storing magnetic paint (4); A retractable hose (232), one end of which is connected to the paint head (231); a pigment chamber (233), which is in communication with an end of the retractable hose (232) away from the pigment head (231), and is used to supply magnetic pigment (4) to the pigment head (231); The pigment tube (234) is connected to the pigment cavity (233) and the pigment tank (235).

5. The device for making bottle interior painting based on magnetic pigment according to claim 4, characterized in that: The pigment head (231) comprises a plurality of capillaries (2311), an ink storage cavity (2312) being provided at the input end of the capillary (2311), each of the capillaries (2311) being connected to the ink storage cavity (2312), and the ink storage cavity (2312) being connected to the retractable hose (232).

6. The device for making bottle interior painting based on magnetic pigment according to claim 1, characterized in that: The magnetic template (11) comprises a non-magnetic bottom plate (111), on which a magnetic pattern (112) is arranged, or the magnetic template (111) comprises a magnetic bottom plate (113), on which a magnetic isolation sheet (114) is adhered.

7. The device for making bottle interior painting based on magnetic pigment according to claim 1, characterized in that: The bottle body (5) is painted with a magnetic pigment (4), wherein the magnetic pigment (4) is a magnetic pigment prepared by adding magnetic particles, a surfactant and a carrier liquid to a liquid pigment.

8. The device for making bottle interior painting based on magnetic pigment according to claim 1, characterized in that: The template base (13) comprises: The positioning rib groove (132) comprises two parallel long strip structures, the bottle body (5) is placed on the positioning rib groove (132), and the positioning rib groove (132) is provided with a bottle mouth hole (1324) for the bottle mouth to extend out; The positioning wheel shaft (133) comprises a steel shaft (1332) and rollers (1331) arranged at both ends of the steel shaft (1332), wherein the positioning wheel shaft (133) is slidably engaged in the positioning rib groove (132); The plate clamp (134) is fixed on the steel shaft (1332), and the plate clamp (134) is fixed on opposite sides of a pair of positioning wheel shafts (133) and is used to abut against the limiting bottle body (5).

9. The device for making bottle interior painting based on magnetic pigment according to claim 2, characterized in that: The dryer (25) comprises a heating resistance wire (251) and a support rod (252); one end of the support rod (252) is fixed to the mobile platform (22), and the other end is connected to the heating resistance wire (251); the heating resistance wire (251) is electrically connected to the main controller (6).

10. A method for making bottle interior painting based on magnetic pigments, characterized in that: The following steps are involved: S1: making a magnetic template (11), separating the original color image of the bottle painting into respective color separation sheets, and making each color separation magnetic template (11) according to the color area displayed on the color separation sheet; S2: fixing the magnetic template (11) and fixing the magnetic template (11) on the template base (13) in a coloring order. The coloring order is determined according to the brightness and transparency of the pigment. In principle, the pigments with high brightness and high transparency are printed first, and the pigments with low brightness and poor transparency are printed later. S3: pouring magnetic pigment (4), adding corresponding magnetic pigment (4) into the pigment tank (235) corresponding to the color separation magnetic template (11); S4: placing the bottle body (5), and using the conveying component (3) to convey the bottle body (5) onto the magnetic template (11); S5: adjusting the position of the coloring device (23), moving the coloring device (23) until the pigment head (231) is sent to the top of the magnetic template (11) in the bottle, rotating the angle of the coloring device (23) by rotating the gear (24) so ​​that the liquid outlet surface of the pigment head (231) is aligned with the starting end of the pattern, and then opening the folding rod (237) to push the pigment head (231) close to the inner surface of the bottle; S6: monochrome coloring, the magnetic pigment (4) is attracted by the magnetic template (11) and drips onto the magnetic pattern area through the capillary (2311) on the pigment head (231) to perform monochrome coloring; after the first part of the coloring is completed, the coloring device (23) is rotated to color the next area, and so on, to complete the monochrome coloring of the pattern; S7: using the conveying assembly (3) to move the bottle body (5) to a drying position; S8: The dryer (25) is sent into the bottle to dry the magnetic pigment (4); after the drying is completed, the bottle body (5) is transported to the next magnetic template (11) to carry out the next single-color coloring, and so on, completing all the coloring and drying procedures, and the bottle painting is completed; S9: Repeat the above steps 4-8 for other bottles (5) to achieve assembly line production.

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