A powder spraying mechanism of a digital printer

Abstract

This utility model relates to the field of digital printing machine technology and discloses a powder spraying mechanism for a digital printing machine. It includes a fixed plate with at least one fixed position. Each fixed position has a corresponding powder storage tank and a powder outlet pipe. A negative pressure component is connected internally to the powder outlet pipe. The bottom of the powder storage tank has a discharge port connected to the powder outlet pipe. Inside the powder storage tank, corresponding to the discharge port, are a drive component and a stirring component connected to it. The drive component drives the stirring component to agitate the glitter powder in the powder storage tank, causing the glitter powder to flow into the powder outlet pipe through the discharge port and be sprayed out under the action of the negative pressure component. When the powder spraying mechanism performs powder spraying, the glitter powder in the powder storage tank is agitated by the drive component, causing the glitter powder to flow into the powder outlet pipe through the discharge port and be sprayed out from the bottom of the powder outlet pipe under the action of the negative pressure component. This achieves uniform powder spraying, ensuring the powder spraying effect and thus guaranteeing product quality.

Description

Technical Field

[0001] This utility model relates to the field of digital printing machine technology, and in particular to a powder spraying mechanism for a digital printing machine. Background Technology

[0002] In digital printing processes, powder spraying is often combined to improve the appearance of products. However, existing powder spraying systems often produce poor powder spraying results, affecting the final quality of the products. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a powder spraying mechanism for a digital printing machine, which improves the powder spraying effect and ensures product quality.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A powder spraying mechanism for a digital printing machine includes a fixed plate with at least one fixed position. Each fixed position is equipped with a matching powder storage tank and a powder outlet pipe. The powder outlet pipe is internally connected to a negative pressure component. The bottom of the powder storage tank is provided with a discharge port connected to the powder outlet pipe. The interior of the powder storage tank is provided with a drive component and a stirring component connected to the discharge port. The drive component is used to drive the stirring component to stir the glitter powder in the powder storage tank, so that the glitter powder flows into the powder outlet pipe through the discharge port and is sprayed out under the action of the negative pressure component.

[0006] Preferably, the device includes a mounting sleeve that is inserted into the fixing plate. The mounting sleeve is a cylindrical shape with one end open. The lower end of the powder storage tank is inserted into the mounting sleeve through the open end of the mounting sleeve. The powder outlet pipe is fixed to the bottom wall of the mounting sleeve.

[0007] Preferably, the device includes a powder suction cover, which is fitted onto the outer wall of the mounting sleeve and surrounds the powder outlet tube therein. The lower end of the powder suction cover is provided with a powder suction hole corresponding to the powder outlet tube. The outer wall of the powder suction cover is provided with a powder suction tube that communicates with the powder suction hole. The other end of the powder suction tube is used to connect to an air suction device.

[0008] Preferably, there are multiple powder storage tanks, and the mounting sleeves and powder outlet pipes are all provided in one-to-one correspondence with the powder storage tanks. The multiple mounting sleeves are connected to form a whole. There is one powder suction hood, and the multiple powder outlet pipes are all located inside the powder suction hood.

[0009] Preferably, the mounting sleeve is provided with a fixing seat, the lower end of the powder storage tank is inserted into the fixing seat, the fixing seat is provided with a first conductive seat, the powder storage tank is provided with a second conductive seat that cooperates with the first conductive seat, and the driving component is electrically connected to the second conductive seat.

[0010] Preferably, the powder storage tank includes a detachably connected tank body and a cover body. The discharge port and the second conductive base are both provided on the cover body, and a sieve plate is provided at one end of the discharge port near the tank body. The sieve plate is provided with a plurality of sieve holes, and the flash powder in the tank body flows into the discharge port through the sieve holes.

[0011] Preferably, the outer wall of the cover is provided with a positioning strip extending along its length, and the inner wall of the fixing seat is provided with a positioning groove, and the positioning strip is embedded in the positioning groove.

[0012] Preferably, the negative pressure assembly includes an air blowing needle, which includes an air blowing end and a connecting end. The connecting end is used to connect to an air source. The outer wall of the air blowing end is provided with an air blowing hole. The air blowing end penetrates the outer wall of the powder outlet pipe and the air blowing hole is located inside the powder outlet pipe. When the air blowing hole blows air in a direction away from the powder storage tank, a negative pressure is formed between the air blowing needle and the discharge port.

[0013] Preferably, it is installed on a powder spraying trolley, with a handle at one end of the fixing plate and slide rails on both sides of the fixing plate, the slide rails being used to cooperate with the slide grooves on the powder spraying trolley.

[0014] Preferably, the driving component is a motor, and the stirring element is a brush or a flexible scraper, wherein the brush or the scraper is connected to the output shaft of the motor.

[0015] The powder spraying mechanism of this utility model, compared with the prior art, has the following advantages: A powder storage tank and a powder outlet pipe are installed on the fixed position of the fixed plate. The powder outlet pipe is internally connected to a negative pressure component. Simultaneously, a discharge port connected to the powder outlet pipe is provided at the bottom of the powder storage tank. A drive component and a stirring component are connected to the discharge port inside the powder storage tank. During powder spraying, the glitter in the powder storage tank is stirred by the stirring component under the action of the drive component, causing the glitter to flow into the powder outlet pipe through the discharge port and be sprayed out from the bottom of the powder outlet pipe under the action of the negative pressure component. This achieves uniform powder spraying, ensuring the powder spraying effect and thus guaranteeing product quality. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the powder spraying mechanism of the digital printing machine of this utility model.

[0017] Figure 2 for Figure 1 Exploded view.

[0018] Figure 3 for Figure 1 A sectional view.

[0019] Figure 4 for Figure 3 A partial view.

[0020] Among them: 1-fixed plate, 2-powder storage tank, 21-tank body, 22-lid, 23-positioning strip, 24-discharge port, 3-powder discharge pipe, 4-motor, 5-stirring component, 6-mounting sleeve, 7-powder suction hood, 71-powder suction hole, 72-powder suction pipe, 8-fixed base, 9-screening plate, 10-air blowing needle, 20-handle, 30-first conductive base, 40-second conductive base, 50-slide rail. Detailed Implementation

[0021] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0022] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] like Figure 1-4As shown in the preferred embodiment of this utility model, a powder spraying mechanism for a digital printing machine is generally installed on a movable powder spraying carriage for powder spraying. For ease of installation, the powder spraying mechanism includes a fixing plate 1 connected to the powder spraying carriage. Specifically, one end of the fixing plate 1 is provided with a handle 20, and both sides of the fixing plate 1 are provided with slide rails 50. The slide rails 50 are used to cooperate with the slide grooves on the powder spraying carriage. The handle 20 can drive the powder spraying mechanism of the digital printing machine to move back and forth. Alternatively, other driving methods such as a motor lead screw can be used for back and forth movement. Generally, the powder spraying carriage is mounted on the crossbeam of a digital printing machine and can move along the X-axis, while the crossbeam can move along the Y-axis. The powder spraying carriage contains a printing mechanism that sprays colored ink to form colored patterns. During the printing process, printing can be performed before or after powder spraying, depending on the specific process. Since the printing mechanism moves with the printing carriage along the X-axis, switching between different processes can be achieved simply by changing the relative distance between the powder spraying and printing mechanisms along the Y-axis. Therefore, this application, by providing the handle, changes the position of the powder spraying mechanism along the Y-axis, thus altering the powder spraying sequence according to the actual printing process. In addition, magnets can be set at both ends of the fixed plate 1, and limiting iron plates can be set at the corresponding positions of the powder spraying trolley. When the magnets are connected to the corresponding limiting iron plates during the movement, the fixed plate 1 will no longer continue to move in that direction. Therefore, two limiting iron plates can be set for the fixed plate 1, so as to limit the movement of the fixed plate 1 between the two limiting iron plates.

[0025] The fixing plate 1 is provided with at least one fixing position, and each fixing position is provided with a matching powder storage tank 2 and a powder outlet pipe 3, so that multiple powder storage tanks 2 can be set at the same time. Each powder storage tank 2 contains different glitter powder. During operation, one powder storage tank 2 can be sprayed with powder, or two or more powder storage tanks 2 can be sprayed with powder, so as to obtain different powder spraying effects and improve the product effect.

[0026] To ensure the smooth discharge of glitter from the powder storage tank 2, a negative pressure component is connected to the inside of the powder outlet pipe 3. The bottom of the powder storage tank 2 is provided with a discharge port 24 connected to the powder outlet pipe 3. Inside the powder storage tank 2, corresponding to the discharge port 24, there is a drive mechanism and a stirring component 5 connected to it. The drive mechanism is used to drive the stirring component 5 to stir the glitter in the powder storage tank 2, so that the glitter flows into the powder outlet pipe 3 through the discharge port 24 and is sprayed out under the action of the negative pressure component.

[0027] Based on the above-mentioned technical features, the powder spraying mechanism of the digital printing machine is equipped with a powder storage tank 2 and a powder outlet pipe 3, which are fixed on the fixed position of the fixed plate 1. The powder outlet pipe 3 is connected to a negative pressure component. At the same time, the bottom of the powder storage tank 2 is provided with a discharge port 24 connected to the powder outlet pipe 3. The inside of the powder storage tank 2 is equipped with a drive component and a stirring component 5 connected to the discharge port 24. During powder spraying, the glitter in the powder storage tank 2 is stirred by the driving component and the stirring component 5, so that the glitter flows into the powder outlet pipe 3 through the discharge port 24 and is sprayed out from the bottom of the powder outlet pipe 3 under the action of the negative pressure component. This achieves uniform powder spraying and ensures the powder spraying effect, thereby ensuring product quality.

[0028] In this embodiment, the powder spraying mechanism of the digital printing machine includes a mounting sleeve 6 inserted into the fixed plate 1. The mounting sleeve 6 is a cylindrical shape with one open end. The lower end of the powder storage tank 2 is inserted into the mounting sleeve 6 through the open end of the mounting sleeve 6. The powder outlet pipe 3 is fixed to the bottom wall of the mounting sleeve 6. Therefore, different powder storage tanks 2 can be installed according to product needs to obtain different product effects.

[0029] Meanwhile, during the powder spraying process, excess powder will remain in the air around the product. If not removed in time, it may partially adhere to the product, affecting its quality. Therefore, to remove the powder, a powder suction hood 7 can be installed. The powder suction hood 7 is fitted onto the outer wall of the mounting sleeve 6 and surrounds the powder outlet pipe 3. The lower end of the powder suction hood 7 is provided with a powder suction hole 71 corresponding to the powder outlet pipe 3. Specifically, a set of powder suction holes 71 is provided for each powder outlet pipe 3, and the set of powder suction holes 71 is evenly distributed around the center line of the powder outlet pipe 3. The outer wall of the powder suction hood 7 is provided with a powder suction pipe 72 that communicates with the powder suction holes 71. The other end of the powder suction pipe 72 is used to connect to an air suction device. After the glitter is sprayed, the excess glitter is sucked away through the powder suction holes 71 by the air suction component, thereby achieving the function of removing excess powder, preventing powder from adhering to the product, and ensuring product quality.

[0030] Since multiple powder storage tanks 2 can be provided (two are shown in the attached figure), and each powder outlet pipe 3 is correspondingly provided with one powder storage tank 2, if there are multiple powder storage tanks 2, then multiple mounting sleeves 6 and powder outlet pipes 3 are also provided, corresponding one-to-one with each powder storage tank 2. Multiple mounting sleeves 6 can then be connected to form a whole, improving the overall strength between them. Alternatively, multiple mounting sleeves 6 can be arranged in pairs, with multiple groups installed separately. The powder suction hood 7 can be a single unit, with multiple powder outlet pipes 3 located inside it. The powder suction hood 7 can be connected to one powder suction pipe 3. Alternatively, there can be multiple powder suction hoods 7, each connected to a pipe. Multiple pipes are connected to one powder suction pipe 3 via an air pipe connector, thus requiring only one suction device. Of course, multiple powder suction hoods 7 can also be connected to multiple suction devices.

[0031] In this embodiment, since the drive mechanism needs to be connected to a power source, and the powder storage tank 2 needs to be replaced during use, ensuring that the drive mechanism is always easily connected to a power source is crucial. In this application, the mounting sleeve 6 is provided with a fixing seat 8, and the lower end of the powder storage tank 2 is inserted into the fixing seat 8. The fixing seat 8 is provided with a first conductive seat 30, and the powder storage tank 2 is provided with a second conductive seat 40 that mates with the first conductive seat 30. The drive mechanism is electrically connected to the second conductive seat 40. The first conductive seat 30 can be a male conductive seat, and the second conductive seat 40 can be a female conductive seat; alternatively, the first conductive seat 30 can be a female conductive seat, and the second conductive seat 40 can be a male conductive seat.

[0032] Additionally, a magnet can be installed inside the fixing base 8. The magnet can simply attract the four nickel-plated iron screws mounted on the bottle cap 22, thus securing the powder storage tank 2 to the fixing base 8. This ensures that the powder storage tank 2 does not shake or fall during operation and that the male and female electrical connectors are firmly pressed together. The magnet can also further attract magnetic powder. When magnetic powder is stored in the powder storage tank 2, after the printing mechanism sprays varnish, the powder spraying mechanism sprinkles powder onto the transfer varnish, and then the magnet attracts the magnetic powder, allowing the magnetic powder to achieve different visual effects under different magnetic fields.

[0033] In this embodiment, the powder storage tank 2 includes a detachably connected tank body 21 and a cover 22. The driving component can be any existing mechanism, such as a motor, rotary cylinder, etc., but a motor is preferred. During installation, a mounting plate can be installed inside the powder storage tank 2, and the driving component is mounted on the mounting plate. Several powder-passing holes are provided on the mounting plate, through which the flash powder flows into the discharge port 24. When the motor is damaged and needs replacement, or when flash powder needs to be added to the powder storage tank 2, the cover 22 can be opened for operation; the operation is simple and convenient. The discharge port 24 and the second conductive seat 40 can both be located on the cover 22. To ensure accurate connection between the first conductive seat 30 and the second conductive seat 40, the outer wall of the cover 22 is provided with a positioning strip 23 extending along its length. The inner wall of the fixing seat 8 is provided with a positioning groove, and the positioning strip 23 is embedded in the positioning groove. Under the action of the positioning groove and the positioning strip 23, the connection accuracy between the first conductive seat 30 and the second conductive seat 40 is ensured.

[0034] In this embodiment, a sieve plate 9 is provided at one end of the discharge port 24 near the tank body 21. The sieve plate 9 has multiple sieving holes, and the glitter in the tank body 21 flows into the discharge port 24 through the sieving holes, thereby ensuring that the particle size of the glitter sprayed on the product is uniform. In actual operation, different sieve plates 9 can be set, and the sieving holes on different sieve plates 9 have different diameters, so that different sieve plates 9 can be installed according to different products to ensure product quality.

[0035] In this embodiment, the negative pressure component includes an air blowing needle 10, which includes an air blowing end and a connecting end. The connecting end is used to connect to an air source. The outer wall of the air blowing end is provided with an air blowing hole. The air blowing end penetrates the outer wall of the powder outlet pipe 3 and the air blowing hole is located inside the powder outlet pipe 3. When the air blowing hole blows air away from the powder storage tank 2, a negative pressure is formed between the air blowing needle 10 and the discharge port 24. At this time, the glitter will have a downward suction force, and the negative pressure will suck down the glitter. Then, the glitter will be sprayed out through the powder outlet pipe 3 with the airflow from the air blowing hole to complete the powder spraying. Then, the suction component will remove the excess floating powder through the suction hole 71 and filter it out through the filter box on the printing carriage.

[0036] In this embodiment, the driving component is a motor 4, and the stirring component 5 is a brush or a flexible scraper, such as a silicone scraper or a rubber scraper. The brush or the scraper is connected to the output shaft of the motor, and the stirring component 5 is driven by the motor 4 to stir the glitter powder.

[0037] It should be noted that there are various powder spraying methods, such as spraying glitter into the interlayer between inks or printing glitter onto the outer surface. When spraying glitter onto the surface, it is necessary to spray the glitter onto the substrate after the varnish or ink has been applied but before it has cured, allowing the glitter to adhere, and then allowing it to cure.

[0038] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A powdering mechanism for a digital printer, characterized by: The device includes a fixing plate with at least one fixing position. Each fixing position is equipped with a matching powder storage tank and a powder outlet pipe. The powder outlet pipe is internally connected to a negative pressure component. The bottom of the powder storage tank is provided with a discharge port connected to the powder outlet pipe. The inside of the powder storage tank is provided with a drive component and a stirring component connected to the discharge port. The drive component is used to drive the stirring component to stir the glitter in the powder storage tank, so that the glitter flows into the powder outlet pipe through the discharge port and is sprayed out under the action of the negative pressure component.

2. The powdering mechanism of a digital printer according to claim 1, wherein: The device includes a mounting sleeve that is inserted into the fixed plate. The mounting sleeve is a cylindrical shape with one end open. The lower end of the powder storage tank is inserted into the mounting sleeve through the open end of the mounting sleeve. The powder outlet pipe is fixed to the bottom wall of the mounting sleeve.

3. The powdering mechanism of the digital printer according to claim 2, wherein: The device includes a powder suction cover, which is fitted onto the outer wall of the mounting sleeve and surrounds the powder outlet tube therein. The lower end of the powder suction cover is provided with a powder suction hole corresponding to the powder outlet tube. The outer wall of the powder suction cover is provided with a powder suction tube that communicates with the powder suction hole. The other end of the powder suction tube is used to connect to an air suction device.

4. The digital printer duster mechanism of claim 3, wherein: There are multiple powder storage tanks, and each of the mounting sleeves and the powder outlet pipes is provided in a one-to-one correspondence with a powder storage tank. The multiple mounting sleeves are connected to form a whole. There is one powder suction hood, and the multiple powder outlet pipes are all located inside the powder suction hood.

5. The digital printer duster mechanism of claim 2, wherein: The mounting sleeve is provided with a fixing seat, the lower end of the powder storage tank is inserted into the fixing seat, the fixing seat is provided with a first conductive seat, the powder storage tank is provided with a second conductive seat that cooperates with the first conductive seat, and the driving component is electrically connected to the second conductive seat.

6. The powdering mechanism of the digital printer according to claim 5, wherein: The powder storage tank includes a detachably connected tank body and a cover. The discharge port and the second conductive base are both located on the cover. A sieve plate is provided at one end of the discharge port near the tank body. The sieve plate has multiple sieve holes. The flash powder in the tank body flows into the discharge port through the sieve holes.

7. A powdering mechanism for a digital printer as claimed in claim 6, wherein: The outer wall of the cover is provided with a positioning strip extending along its length, and the inner wall of the fixing seat is provided with a positioning groove, in which the positioning strip is embedded.

8. A powdering mechanism for a digital printer according to any one of claims 1 to 7, wherein: The negative pressure component includes an air blowing needle, which includes an air blowing end and a connecting end. The connecting end is used to connect to an air source. The outer wall of the air blowing end is provided with an air blowing hole. The air blowing end penetrates the outer wall of the powder outlet pipe and makes the air blowing hole located inside the powder outlet pipe. When the air blowing hole blows air in a direction away from the powder storage tank, a negative pressure is formed between the air blowing needle and the discharge port.

9. A powdering mechanism for a digital printer according to any one of claims 1 to 7, wherein: It is installed on the powder spraying trolley. One end of the fixing plate is provided with a handle, and both sides of the fixing plate are provided with slide rails, which are used to cooperate with the slide grooves on the powder spraying trolley.

10. A dusting mechanism for a digital printer as claimed in any one of claims 1 to 7, wherein: The driving component is a motor, and the stirring element is a brush or a flexible scraper, wherein the brush or the scraper is connected to the output shaft of the motor.

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