A magnetic powder printing screen

Abstract

This utility model discloses a magnetic powder printing screen, comprising: a substrate; and a magnetic printing mechanism, wherein the magnetic printing mechanism includes an electromagnetic control circuit and several magnetic coils disposed on the substrate; the electromagnetic control circuit is electrically connected to the several magnetic coils and is used to control one or more of the magnetic coils to be energized. When the magnetic coils are energized, a magnetic field is generated. The substrate is placed above the printing wet film coating, and the magnetic powder in the coating will move and rearrange under the magnetic force of the magnetic field to form the desired pattern effect, achieving the effect of magnetic printing. In addition, by controlling the several magnetic coils through the electromagnetic control circuit, the number of energized magnetic coils can be selected, or the magnetic coils at corresponding positions can be selected to be energized, so that the magnetic force distribution on the substrate can be changed according to the needs, thereby allowing the printing pattern to be changed as needed. Therefore, this utility model has the advantage of being able to change a variety of printing patterns.

Description

Technical Field

[0001] This application relates to the field of magnetic powder printing coating technology, specifically to a magnetic powder printing screen. Background Technology

[0002] Magnetic powder printing coating process involves printing with magnetic powder, usually used on shoe uppers. It requires a wet film condition, where a magnetic plate is placed on top of the wet film coating. Under the action of magnetic force, the magnetic powder in the coating will move and rearrange to form a new pattern, achieving the printing effect by relying on magnetic force.

[0003] Currently, the magnetic plates used are made of a single iron plate as the base, with embedded magnets that can only present fixed patterns. On the one hand, the patterns on the magnetic plates are relatively simple, and on the other hand, the magnetic properties of the magnetic plates are limited and cannot be freely adjusted, resulting in limited applications. Utility Model Content

[0004] Therefore, it is necessary to provide a magnetic powder printing screen to solve the problem of monotonous patterns in existing magnetic plate printing technology.

[0005] To achieve the above objectives, the inventor provides a magnetic powder printing screen, comprising:

[0006] substrate;

[0007] A magnetic printing mechanism includes an electromagnetic control circuit and several magnetic coils disposed on a substrate; the electromagnetic control circuit is electrically connected to the several magnetic coils and is used to control one or more of the magnetic coils to be energized.

[0008] In some embodiments, the magnetic printing mechanism further includes:

[0009] A switching assembly is disposed on the surface of the substrate and connected to an electromagnetic control circuit.

[0010] In some embodiments, the switching assembly includes:

[0011] The magnetic coil selection key is used to select one or more magnetic coils to be connected to the electromagnetic control circuit.

[0012] The magnetic field strength adjustment key is used to adjust the magnetic field strength of the magnetic coil.

[0013] The magnetic field direction adjustment key is used to adjust the direction of the magnetic field of the magnetic coil.

[0014] In some embodiments, the magnetic field direction adjustment key is used to switch between the first power supply sub-circuit and the second power supply sub-circuit; the power supply current directions in the first power supply sub-circuit and the second power supply sub-circuit are opposite.

[0015] In some embodiments, the magnetic field strength adjustment key is used to control the number of connected power sources or resistors to adjust the magnetic field strength.

[0016] In some embodiments, the electromagnetic control circuit further includes a magnetic field strength adjustment circuit, which adjusts the magnetic field strength by controlling the number of power supplies or resistors connected to the magnetic coil through a magnetic field strength adjustment switch.

[0017] In some embodiments, the electromagnetic control circuit further includes a magnetic field direction adjustment circuit, which switches between a first power supply sub-circuit and a second power supply sub-circuit via a magnetic field direction adjustment switch, wherein the power supply currents in the first power supply sub-circuit and the second power supply sub-circuit are in opposite directions.

[0018] In some embodiments, the substrate includes:

[0019] The printing plate, wherein the electromagnetic control circuit is located on the printing plate;

[0020] An inlay plate is embedded in the printing plate, and several magnetic coils are disposed on the inlay plate.

[0021] In some embodiments, the substrate has positioning protrusions on its side.

[0022] Unlike existing technologies, the magnetic powder printing screen described in the above technical solution uses a substrate with several magnetic coils arranged according to the printing pattern. When the magnetic coils are energized, a magnetic field is generated. The substrate is placed on top of the wet film coating, and the magnetic powder in the coating will move and rearrange under the magnetic force of the magnetic field to form the desired pattern effect, thus achieving the effect of magnetic printing. In addition, the electromagnetic control circuit controls the magnetic coils to select the number of energized magnetic coils or to select the magnetic coils at corresponding positions to be energized, so that the magnetic force distribution on the substrate can be changed according to the needs, thereby changing the printing pattern as required.

[0023] The above description of the utility model is merely an overview of the technical solution of this application. In order to enable those skilled in the art to better understand the technical solution of this application and to implement it based on the description and drawings, and to make the above-mentioned objectives and other objectives, features and advantages of this application easier to understand, the following description is provided in conjunction with the specific embodiments and drawings of this application. Attached Figure Description

[0024] The accompanying drawings are only used to illustrate the principles, implementation methods, applications, features, and effects of specific embodiments of this application and other related content, and should not be considered as limitations on this application.

[0025] In the accompanying drawings of the instruction manual:

[0026] Figure 1 This is a structural diagram of the magnetic powder printing screen described in a specific embodiment;

[0027] Figure 2 An exploded view of the magnetic powder printing screen as described in the specific embodiment;

[0028] Figure 3 The circuit diagram of the magnetic field strength adjustment circuit described in the specific implementation embodiment is shown below.

[0029] Figure 4 The circuit diagram is shown in the embodiment of the magnetic field direction adjustment circuit.

[0030] Figure 5 A circuit diagram of the electromagnetic control circuit described in a specific embodiment;

[0031] Figure 6 A circuit diagram of another electromagnetic control circuit described in a specific embodiment;

[0032] The reference numerals used in the above figures are explained as follows:

[0033] 1. Printing substrate;

[0034] 2. Inlay panel;

[0035] 200. Coil slot;

[0036] 3. Magnetic coil;

[0037] 4. Positioning protrusion;

[0038] 5. Magnetic coil selection key;

[0039] 6. Magnetic field strength adjustment key;

[0040] 7. Magnetic field direction adjustment key;

[0041] 8. Main switch;

[0042] 9. Electromagnetic control circuit. Detailed Implementation

[0043] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0044] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0045] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0046] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0047] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0048] Unless otherwise specified, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0049] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0050] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0051] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0052] Magnetic powder printing coating process involves printing with magnetic powder, usually used on shoe uppers. It requires a wet film condition, where a magnetic plate is placed on top of the wet film coating. Under the action of magnetic force, the magnetic powder in the coating will move and rearrange to form a new pattern, achieving the printing effect by relying on magnetic force.

[0053] Currently, the magnetic plates used are made of a single iron plate as the base, with embedded magnets that can only present fixed patterns. On the one hand, the patterns on the magnetic plates are relatively simple, and on the other hand, the magnetic properties of the magnetic plates are limited and cannot be freely adjusted, resulting in limited applications.

[0054] Therefore, this utility model provides a magnetic powder printing screen with controllable magnetism, which allows for free adjustment of the printing pattern and provides a variety of printing patterns, thus expanding its application range.

[0055] Please see Figure 1 In a specific embodiment, the magnetic powder printing screen includes a substrate and a magnetic printing mechanism. The magnetic printing mechanism includes an electromagnetic control circuit 9 and a plurality of magnetic coils 3. The plurality of magnetic coils 3 are disposed on the substrate; the electromagnetic control circuit 9 is electrically connected to the plurality of magnetic coils 3 and is used to control the energization of one or more of the plurality of magnetic coils 3.

[0056] The magnetic powder printing screen is configured with several magnetic coils 3 on a substrate, arranged according to the printing pattern. When the magnetic coils 3 are energized, a magnetic field is generated. The substrate is placed above the wet film coating, and the magnetic powder in the coating will move and rearrange under the magnetic force of the magnetic field to form the desired pattern effect, thus achieving the effect of magnetic printing. In addition, the electromagnetic control circuit 9 controls the several magnetic coils 3 to select the number of energized magnetic coils 3 or to select the magnetic coils 3 at corresponding positions to be energized, that is, to control one or several of the several magnetic coils 3 to be energized, so that the magnetic force distribution on the substrate can be changed according to the needs, which is controllable, and thus the printing pattern can be changed according to the needs.

[0057] In some embodiments, the magnetic coils 3 are arranged in parallel, interleaved, or otherwise.

[0058] In some embodiments, the size of the plurality of magnetic coils 3 can be 1mm-3mm, and the spacing between adjacent magnetic coils 3 can be 0.5mm-2.0mm.

[0059] In some embodiments, the inner core of the magnetic coil 3 is made of soft iron, not steel. Otherwise, once the steel is magnetized, it will retain its magnetism for a long time and cannot be demagnetized, so the strength of its magnetism cannot be adjusted.

[0060] In some embodiments, the substrate includes a printing plate 1 and an inlay plate 2, and the electromagnetic control circuit 9 is disposed on the printing plate 1; the inlay plate 2 is embedded in the printing plate 1, and a plurality of magnetic coils 3 are disposed on the inlay plate 2.

[0061] Please see Figure 2 In some embodiments, the inlay plate 2 is provided with a coil groove 200, and a plurality of magnetic coils 3 are embedded in the coil groove 200.

[0062] In some embodiments, the substrate has a positioning protrusion 4 on its side. The positioning protrusion 4 is used to limit the position of the substrate on the printing table so that the magnetic coil 3 on the substrate is aligned with the printing position of the fabric to be printed, thereby achieving fast and accurate positioning.

[0063] In some embodiments, the magnetic printing mechanism further includes a switch assembly disposed on the surface of the substrate, specifically at the edge of the printing plate 1, and the switch assembly is connected to the electromagnetic control circuit 9. The user controls the electromagnetic control circuit 9 by manipulating the switch assembly to change the magnetic force distribution, thereby achieving controllability and allowing the printing pattern to be changed as needed.

[0064] In some embodiments, the switch assembly includes a magnetic coil selection key 5, a magnetic field strength adjustment key 6, and a magnetic field direction adjustment key 7. The magnetic coil selection key 5, the magnetic field strength adjustment key 6, and the magnetic field direction adjustment key 7 are all located on the substrate, specifically at the edge of the printing plate 1, for user operation.

[0065] In some embodiments, the switching assembly further includes a main switch 8, which activates the electromagnetic control circuit.

[0066] The magnetic coil selection key 5 is used to select one or more magnetic coils to connect to the electromagnetic control circuit 9, thereby selecting the number of energized magnetic coils or selecting the corresponding magnetic coil 3 to be energized. This allows the magnetic force distribution on the substrate to be changed as needed, thus altering the printed pattern. The magnetic field strength adjustment key 6 is used to adjust the magnetic field strength of the magnetic coil 3. Because the magnetic powder in the coating has different magnetic properties, its displacement varies, resulting in patterns of varying depths. The magnetic field direction adjustment key 7 is used to adjust the magnetic field direction of the magnetic coil 3, changing the magnetic direction of the pattern and thus altering the printed pattern effect.

[0067] By controlling the switch assembly, a certain pattern of magnetism can be generated on the surface of the magnetic plate. These patterns can be changed by controlling the magnetic coil selection key 5. The magnetic coil 3 can control the strength of the magnetism by adjusting the magnetic field strength key 6. The magnetic powder in the coating will be displaced differently due to different magnetism, so the pattern will be formed with different depths. The magnetic direction adjustment key 7 can change the magnetic direction of the pattern, which will produce different pattern effects.

[0068] When the coil is wound in a fixed direction, the direction of the magnetic field of the magnetic coil 3 is determined by the direction of the current. Therefore, in some embodiments, the magnetic field direction adjustment key 7 is used to switch between the first power supply sub-circuit and the second power supply sub-circuit. The power supply currents in the first power supply sub-circuit and the second power supply sub-circuit are in opposite directions. By switching between the first power supply sub-circuit and the second power supply sub-circuit, the direction of the magnetic field of the magnetic coil 3 can be changed.

[0069] When the number of coil turns is fixed, the strength of the magnetic field of the magnetic coil 3 is determined by the magnitude of the current. Therefore, in some embodiments, the magnetic field strength adjustment key 6 is used to control the number of power supplies and resistors connected to adjust the magnetic field strength. The magnetic field strength adjustment key 6 can also be used to control components such as variable resistors to adjust the magnetic field strength.

[0070] In some embodiments, the electromagnetic control circuit 9 further includes a magnetic field strength adjustment circuit. This circuit adjusts the magnetic field strength by controlling the number of power sources, the number of resistors, and the resistance value of the variable resistor connected to the magnetic coil 3 via a magnetic field strength adjustment switch. The magnetic field strength adjustment circuit includes branches with different numbers of power sources and resistors. The magnetic field strength adjustment switch can be a selector switch to choose which branches to connect.

[0071] Please see Figure 3 The electromagnetic intensity adjustment circuit has three branches. The first branch has one power supply I1, the second branch has two power supplies I2, and the third branch has three power supplies I3. By using the magnetic field intensity adjustment switch (selection switch SA1), the first branch, the second branch, or the third branch can be selected to be connected, thereby changing the current and thus adjusting the magnetic field intensity.

[0072] In some embodiments, the commutator of a DC motor can be used to change the two poles of the power supply to change the direction of the power supply current, thereby changing the direction of the magnetic field of the magnetic coil 3.

[0073] In other embodiments, the electromagnetic control circuit 9 further includes a magnetic field direction adjustment circuit, which switches between a first power supply sub-circuit and a second power supply sub-circuit via a magnetic field direction adjustment switch. The power supply currents in the first power supply sub-circuit and the second power supply sub-circuit are set in opposite directions. The magnetic field direction adjustment switch can be a selector switch.

[0074] Please see Figure 4 The current directions of power supply I4 in the first power supply sub-circuit and power supply I5 in the second power supply sub-circuit are opposite. By adjusting the magnetic field direction switch (selection switch SA2), the first power supply sub-circuit or the second power supply sub-circuit can be selected to be connected, thereby changing the current direction and adjusting the magnetic field direction.

[0075] In some embodiments, the electromagnetic control circuit 9, as shown in the figure, is a type of electromagnetic control circuit 9. Figure 5 or Figure 6 As shown, the electromagnetic control circuit 9 is provided with several magnetic coil branches. By selecting the magnetic coil branch to be connected through the selection switch SA3, the energized magnetic coil can be selected as L1, L2 or L3, etc. Each magnetic coil branch can be connected to a different number of magnetic coils to select the number of energized magnetic coils.

[0076] In some embodiments, the electromagnetic control circuit 9, as shown in the figure, is a type of electromagnetic control circuit 9. Figure 5As shown, the first and second power supply subcircuits each have three branches. The first branch of the first power supply subcircuit has one power supply I1, the second branch has two power supplies I2, and the third branch has three power supplies I3. The first branch of the second power supply subcircuit has one power supply I6, the second branch has two power supplies I7, and the third branch has three power supplies I8. The current directions of the three branches of the first power supply subcircuit are the same, and the current directions of the three branches of the second power supply subcircuit are also the same, but the current directions of the three branches of the first and second power supply subcircuits are opposite. This allows for adjustment of both the magnetic field strength and the magnetic field direction. The electromagnetic control circuit is activated by switch S1 (main switch 8). The magnetic field direction adjustment switch (selector switch SA4) selects to connect to either the first or second power supply subcircuit, thereby changing the current direction and thus adjusting the magnetic field direction. The magnetic field strength adjustment switch (selector switch SA1 or SA5) selects to connect to either the first, second, or third branch, thereby changing the current magnitude and thus adjusting the magnetic field strength.

[0077] The magnetic field strength can also be adjusted by adjusting the resistance value of the variable resistor. In some embodiments, the electromagnetic control circuit 9 is as follows: Figure 6 As shown, the current directions of power supply I4 in the first power supply sub-circuit and power supply I5 in the second power supply sub-circuit are opposite. By using the magnetic field direction adjustment switch (selector switch SA2), the first or second power supply sub-circuit can be selected, thereby changing the current direction and thus adjusting the magnetic field direction. The electromagnetic control circuit is activated by switch S2 (main switch 8), and the magnetic field direction is adjusted by the magnetic field direction adjustment switch (selector switch SA2). The magnetic field strength adjustment circuit is equipped with a variable resistor connected in series with the magnetic field direction adjustment circuit. By using the magnetic field direction adjustment switch (selector switch SA2), the first or second power supply sub-circuit can be selected, thereby changing the current direction and thus adjusting the magnetic field strength. By adjusting the variable resistor, the current magnitude is changed, thereby adjusting the magnetic field strength.

[0078] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A magnetic powder printing screen, characterized in that, include: substrate; A magnetic printing mechanism includes an electromagnetic control circuit and several magnetic coils disposed on a substrate; the electromagnetic control circuit is electrically connected to the several magnetic coils and is used to control one or more of the magnetic coils to be energized.

2. The magnetic powder printing screen according to claim 1, characterized in that, The magnetic printing mechanism further includes: A switching assembly is disposed on the surface of the substrate and connected to an electromagnetic control circuit.

3. The magnetic powder printing screen according to claim 2, characterized in that, The switching assembly includes: The magnetic coil selection key is used to select one or more magnetic coils to be connected to the electromagnetic control circuit. The magnetic field strength adjustment key is used to adjust the magnetic field strength of the magnetic coil. The magnetic field direction adjustment key is used to adjust the direction of the magnetic field of the magnetic coil.

4. The magnetic powder printing screen according to claim 3, characterized in that, The magnetic field direction adjustment key is used to switch between the first power supply sub-circuit and the second power supply sub-circuit; the power supply current directions set in the first power supply sub-circuit and the second power supply sub-circuit are opposite.

5. The magnetic powder printing screen according to claim 3, characterized in that, The magnetic field strength adjustment key is used to control the number of power sources or resistors connected, thereby adjusting the magnetic field strength.

6. The magnetic powder printing screen according to claim 1, characterized in that, The electromagnetic control circuit also includes a magnetic field strength adjustment circuit, which adjusts the magnetic field strength by controlling the number of power supplies or resistors connected to the magnetic coil through a magnetic field strength adjustment switch.

7. The magnetic powder printing screen according to claim 1, characterized in that, The electromagnetic control circuit also includes a magnetic field direction adjustment circuit, which switches between the first power supply sub-circuit and the second power supply sub-circuit via a magnetic field direction adjustment switch. The power supply currents in the first power supply sub-circuit and the second power supply sub-circuit are set in opposite directions.

8. The magnetic powder printing screen according to claim 1, characterized in that, The substrate includes: The printing plate, wherein the electromagnetic control circuit is located on the printing plate; An inlay plate is embedded in the printing plate, and several magnetic coils are disposed on the inlay plate.

9. The magnetic powder printing screen according to claim 1, characterized in that, The substrate has positioning protrusions on its side.

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