Digital printer dusting assembly

Abstract

The utility model relates to the technical field of printing machines, and discloses a digital printing machine dusting assembly which comprises a powder storage tank, a stirring brush and a driving mechanism, a powder spraying head assembly is arranged at the lower end of the powder storage tank, the stirring brush is arranged in the powder storage tank corresponding to the powder spraying head assembly, and the driving mechanism is used for driving the stirring brush to rotate; the powder storage tank is further connected with an air pipe connector, and the air pipe connector is used for being connected with an air source to drive powder to be sprayed out of the powder spraying head assembly. According to the powder scattering assembly of the digital printing machine, the stirring brush corresponding to the powder spraying head assembly is arranged in the powder storage tank, the driving mechanism drives the stirring brush to rotate, in the powder scattering process, the air pipe connector is connected with the air source to drive powder to be sprayed out of the powder spraying head assembly, powder scattering is achieved, and meanwhile the stirring brush sweeps the powder spraying head assembly. The situation that the powder spraying head assembly is blocked in the powder spraying process is avoided, and the product quality is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of printing machines, in particular to a powder spreading component of a digital printing machine. Background Art

[0002] In the digital printing process, powdering process is often combined to improve the appearance of the product. However, the existing powdering components often clog the powder spray head components, affecting the final quality of the product. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a powder spreading component of a digital printing machine, which avoids the situation where the powder spray head component is blocked during the powder spreading process and ensures product quality.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A powder spreading assembly for a digital printing machine, comprising a powder storage tank, a stirring brush and a driving mechanism, wherein a powder spraying head assembly is arranged at the lower end of the powder storage tank, the stirring brush is arranged inside the powder storage tank corresponding to the powder spraying head assembly, and the driving mechanism is used to drive the stirring brush to rotate;

[0006] The powder storage tank is also connected to an air pipe joint, and the air pipe joint is used to connect to an air source to drive the powder to be sprayed out from the powder spraying head assembly.

[0007] Preferably, the upper end of the powder storage tank is open, an upper cover is threadedly connected to the opening, and the air pipe joint is arranged on the upper cover.

[0008] Preferably, the driving mechanism is a motor; the motor is arranged inside the powder storage tank, and the output shaft of the motor is connected to the stirring brush.

[0009] Preferably, a motor support plate is provided inside the upper cover and between the inner wall of the upper cover and the powder storage tank, a motor fixing plate is provided inside the powder storage tank corresponding to the motor support plate, the motor support plate and the motor fixing plate are connected by studs, and the motor is fixed on the motor fixing plate.

[0010] Preferably, a powder suction pipe is provided on the outer wall of the lower end of the powder storage tank, the powder spraying head assembly is arranged inside the powder suction pipe, and a powder discharge port for discharging excess powder is provided on the side wall of the powder suction pipe.

[0011] Preferably, the powder spray head assembly includes a coaxially arranged lower cover, a powder spray pipe, a powder spray head and a powder sieve, the lower cover is connected to the powder storage tank, one end of the powder spray pipe passes through the lower cover and is connected to the interior of the powder storage tank, the powder spray head cover is arranged at the other end of the powder spray pipe, the powder sieve is arranged inside the powder spray head and is located between the inner wall of the powder spray head and the powder spray pipe, and the stirring brush is arranged in the powder spray pipe.

[0012] Preferably, the lower cover comprises a cover body and a ring protruding from the edge of the cover body, the ring is threadedly connected to the powder storage tank, and a sealing gasket is provided between the cover body and the powder storage tank;

[0013] A flange nut and a sealing ring are arranged inside the cover body, the powder spraying tube is threadedly connected to the flange nut, the sealing ring is fitted with the flange nut and is located between the flange nut and the sealing gasket.

[0014] Preferably, the cross section of the powder storage tank is rectangular, a top plate is provided at the upper end of the powder storage tank, a feed port is provided on the top plate, and a sealing assembly is detachably provided on the feed port;

[0015] The driving mechanism is a motor, the air pipe joint and the motor are both arranged on the side wall of the powder storage tank, and the output shaft of the motor passes through the outer wall of the powder storage tank to connect with the stirring brush.

[0016] Preferably, the sealing assembly includes a nut, a nut and an internal and external thread joint inserted into the feed port, the nut is connected to the external thread of the internal and external thread joint to fix the internal and external thread joint to the feed port, and the nut is detachably connected to the internal thread of the internal and external thread joint.

[0017] Preferably, the powder spray head assembly includes a screen, a screen pressing frame and a screen fixing frame for connecting the powder storage tank, the screen fixing frame is provided with a mounting groove, and the bottom surface of the mounting groove is connected to the interior of the powder storage tank, the screen is arranged in the mounting groove and fixed by the screen pressing frame.

[0018] Compared with the prior art, the digital printing machine powder sprinkling component of the utility model embodiment has the following beneficial effects: a stirring brush is arranged inside the powder storage tank corresponding to the powder spraying head component, and the stirring brush is driven to rotate by a driving mechanism. During the powder sprinkling process, the air pipe joint is connected to the air source to drive the powder to be sprayed out from the powder spraying head component to realize powder sprinkling, and at the same time the stirring brush sweeps the powder spraying head component, thereby avoiding the situation where the powder spraying head component is blocked during the powder sprinkling process and ensuring product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural schematic diagram of a powder spreading assembly of a digital printing machine according to the first embodiment of the utility model.

[0020] Figure 2 for Figure 1 Exploded diagram.

[0021] Figure 3 This is a structural schematic diagram of a powder spreading assembly of a digital printing machine according to the second embodiment of the utility model.

[0022] Figure 4 for Figure 3 Exploded view of the powder spray head assembly.

[0023] Among them: 1-powder storage tank, 2-stirring brush, 3-upper cover, 4-motor, 5-air pipe joint, 6-motor support plate, 7-motor fixing plate, 8-stud, 9-powder suction pipe, 10-powder discharge port, 11-lower cover, 12-powder spraying pipe, 13-powder spraying head, 14-powder sieve, 15-sealing gasket, 16-flange nut, 17-sealing ring, 18-top plate, 19-nut, 20-internal and external thread joint, 21-screen, 22-screen pressing frame, 23-screen fixing frame. DETAILED DESCRIPTION

[0024] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0025] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0026] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Embodiment 1

[0028] like Figure 1-2As shown, a digital printing machine powder spreading assembly of a preferred embodiment of the utility model comprises a powder storage tank 1, a stirring brush 2 and a driving mechanism, wherein a powder spraying head assembly is provided at the lower end of the powder storage tank 1, the stirring brush 2 is arranged inside the powder storage tank 1 corresponding to the powder spraying head assembly, and the driving mechanism is used to drive the stirring brush 2 to rotate;

[0029] The powder storage tank 1 is also connected to an air pipe joint 5, which is used to connect to an air source to drive the powder to be sprayed out by the powder spray head assembly. Specifically, the air pipe joint 5 is connected to an air source, and the gas blows through the air pipe joint 5 to make the powder storage tank 1 under positive pressure, so that the powder particles are sprayed out by the powder spray head through the air pressure.

[0030] The digital printing machine powder sprinkling assembly based on the above technical features is provided with a stirring brush 2 inside the powder storage tank 1 corresponding to the powder spraying head assembly, and the stirring brush 2 is driven to rotate by a driving mechanism. During the powder sprinkling process, the air pipe joint 5 is connected to the air source to drive the powder to be sprayed out from the powder spraying head assembly to achieve powder sprinkling, and at the same time, the stirring brush 2 sweeps the powder spraying head assembly, thereby avoiding the situation where the powder spraying head assembly is blocked during the powder sprinkling process and ensuring product quality.

[0031] In this embodiment, the cross section of the powder storage tank 1 is circular, the upper end of the powder storage tank 1 is open, and the upper cover 3 is threadedly connected to the opening, that is, the upper cover 3 and the powder storage tank 1 are detachably connected, and the upper cover 3 can be opened when powder needs to be added, and the upper cover 3 can be covered after adding. The air pipe joint 5 is also provided on the upper cover 3.

[0032] In this embodiment, the driving mechanism is a motor 4; the motor 4 is arranged inside the powder storage tank 1. Specifically, a motor support plate 6 is provided inside the upper cover 3 and between the inner wall of the upper cover 3 and the powder storage tank 1. A hole for air to enter is provided in the middle of the motor support plate 6 corresponding to the air pipe joint 5. A motor fixing plate 7 is provided inside the powder storage tank 1 corresponding to the motor support plate 6. The motor support plate 6 is connected to the motor fixing plate 7 by a stud 8, and the motor 4 is fixed on the motor fixing plate 7. The output shaft of the motor 4 is connected to the stirring brush 2. Specifically, the output shaft of the motor is connected to the rotating shaft through a coupling, and the other end of the rotating shaft is connected to the stirring brush 2. At the same time, a sealing sleeve can be provided between the upper cover 3 and the powder storage tank 1, and the motor support plate 6 is inserted in the sealing sleeve, which not only ensures the sealing between the upper cover 3 and the powder storage tank 1, but also facilitates the installation of the motor support plate 6.

[0033] In addition, since the air pipe joint 5 is also arranged on the upper cover 3, and the motor 4 is arranged inside the powder storage tank 1, in order to prevent the motor 4 from affecting the air entering the powder storage tank 1 through the air pipe joint 5, the length of the stud 8 should be greater than the length of the motor 4, so that there is a gap between the bottom of the motor 4 and the motor support plate 6, which does not affect the entry of air.

[0034] In this embodiment, a powder suction pipe 9 is provided on the outer wall of the lower end of the powder storage tank 1, and the powder spraying head assembly is arranged inside the powder suction pipe 9. When the powder spraying head assembly sprinkles powder, the powder is sprayed onto the substrate from the lower end of the powder suction pipe 9. A powder discharge port 10 for discharging excess powder is provided on the side wall of the powder suction pipe 9. The setting of the powder suction pipe 9 is mainly aimed at the structure in which the printing assembly is simultaneously provided in the printing machine. Since the two processes of printing and powder sprinkling are carried out on one device, there may be excess dust polluting the printing assembly during the powder sprinkling process, resulting in the blocking of the printing nozzle. In this application, the powder suction pipe 9 is provided, and the powder discharge port 10 is connected to the suction device, so that the excess dust can be sucked out, thereby avoiding dust contamination of the nozzle of the printing assembly and ensuring the printing effect.

[0035] In this embodiment, the powder spray head assembly includes a coaxially arranged lower cover 11, a powder spray pipe 12, a powder spray head 13 and a powder sieving net 14, wherein the lower cover 11 is connected to the powder storage tank 1, one end of the powder spray pipe 12 passes through the lower cover 11 and is connected to the inside of the powder storage tank 1, and the powder spray head 13 is covered with the other end of the powder spray pipe 12. The powder sieving net 14 is arranged inside the powder spray head 13 and is located between the inner wall of the powder spray head 13 and the powder spray pipe 12, and the stirring brush 2 is arranged inside the powder spray pipe 12. When powdering, under the action of the positive pressure of gas, the powder enters the powder spray pipe 12 from the powder storage tank 1, and then passes through the powder sieving net 14 and is sprayed out from the powder spray head 13. The sieve aperture of the powder sieving net 14 can be selected as needed to ensure the powdering effect. The powder spray head 13 is connected to the powder spray pipe 12 by a thread, and when a different powder sieving net 14 needs to be replaced, it is only necessary to disassemble the powder spray head 13.

[0036] In addition, in order to ensure the sealing between the powder spray head assembly and the powder storage tank 1 and the connection stability between the powder spray pipe 12 and the lower cover 11, the lower cover 11 includes a cover body and a ring protruding from the edge of the cover body, the ring is threadedly connected to the powder storage tank 1, and a sealing gasket 15 is provided between the cover body and the powder storage tank 1; a flange nut 16 and a sealing ring 17 are provided inside the cover body, the powder spray pipe 12 is threadedly connected to the flange nut 16, the sealing ring 17 is in contact with the flange nut 16, and is located between the flange nut 16 and the sealing gasket 15.

[0037] In addition, a sealing ring may be provided between the flange nut 16 and the powder spraying net 14 to ensure overall sealing.

[0038] Embodiment 2

[0039] like Figure 3 As shown, in this embodiment, the cross-section of the powder storage tank 1 is rectangular, and a top plate 18 is provided at the upper end of the powder storage tank 1. A feed port is provided on the top plate 18. A sealing assembly is detachably provided on the feed port. When feeding is required, the sealing assembly is disassembled, and the material can be fed from the feed port; after the feeding is completed, the sealing assembly can be closed. The sealing assembly includes a nut, a nut 19, and an internal and external thread joint 20 inserted into the feed port. The nut is connected to the external thread of the internal and external thread joint, and the internal and external thread joint 20 is fixed to the feed port. The nut 19 is detachably connected to the internal thread of the internal and external thread joint. When feeding, the nut 19 is removed, and the material can be fed from the internal and external thread joint 20. After the feeding is completed, the nut 19 can be installed.

[0040] In this embodiment, the driving mechanism is a motor 4 , the air pipe joint 5 and the motor 4 are both arranged on the side wall of the powder storage tank 1 , and the output shaft of the motor 4 passes through the outer wall of the powder storage tank 1 to connect with the stirring brush 2 .

[0041] like Figure 4 As shown, in this embodiment, the powder spray head assembly includes a screen 21, a screen pressing frame 22 and a screen fixing frame 23 for connecting the powder storage tank 1. The screen fixing frame 23 is provided with a mounting groove, and the bottom surface of the mounting groove is connected to the inside of the powder storage tank 1. The screen 21 is arranged in the mounting groove and fixed by the screen pressing frame 22. The bottom end of the powder storage tank 1 is provided with a bottom plate, and the screen fixing frame 23 is arranged on the bottom plate. The screen pressing frame 22 and the screen fixing frame 23 are connected by screws.

[0042] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A powder spreading component for a digital printing machine, characterized in that: It comprises a powder storage tank, a stirring brush and a driving mechanism, wherein a powder spray head assembly is arranged at the lower end of the powder storage tank, the stirring brush is arranged inside the powder storage tank corresponding to the powder spray head assembly, and the driving mechanism is used to drive the stirring brush to rotate; The powder storage tank is also connected to an air pipe joint, and the air pipe joint is used to connect to an air source to drive the powder to be sprayed out from the powder spraying head assembly.

2. The powder spreading assembly of a digital printing machine according to claim 1, characterized in that: The upper end of the powder storage tank is open, an upper cover is threadedly connected to the opening, and the air pipe joint is arranged on the upper cover.

3. The powder spreading assembly of a digital printing machine according to claim 2, characterized in that: The driving mechanism is a motor; the motor is arranged inside the powder storage tank, and the output shaft of the motor is connected to the stirring brush.

4. The powder spreading assembly of a digital printing machine according to claim 3, characterized in that: A motor support plate is provided inside the upper cover and between the inner wall of the upper cover and the powder storage tank. A motor fixing plate is provided inside the powder storage tank corresponding to the motor support plate. The motor support plate and the motor fixing plate are connected by studs, and the motor is fixed on the motor fixing plate.

5. The powder spreading assembly of a digital printing machine according to any one of claims 1 to 4, characterized in that: The outer wall of the lower end of the powder storage tank is provided with a powder suction pipe, the powder spraying head assembly is arranged inside the powder suction pipe, and the side wall of the powder suction pipe is provided with a powder discharge port for discharging excess powder.

6. The powder spreading assembly of a digital printing machine according to any one of claims 1 to 4, characterized in that: The powder spray head assembly includes a coaxially arranged lower cover, a powder spray pipe, a powder spray head and a powder sifting net, the lower cover is connected to the powder storage tank, one end of the powder spray pipe passes through the lower cover and is connected to the inside of the powder storage tank, the powder spray head cover is arranged at the other end of the powder spray pipe, the powder sifting net is arranged inside the powder spray head and is located between the inner wall of the powder spray head and the powder spray pipe, and the stirring brush is arranged in the powder spray pipe.

7. The powder spreading assembly of a digital printing machine according to claim 6, characterized in that: The lower cover comprises a cover body and a ring protruding from the edge of the cover body, the ring is threadedly connected to the powder storage tank, and a sealing gasket is provided between the cover body and the powder storage tank; A flange nut and a sealing ring are arranged inside the cover body, the powder spraying tube is threadedly connected to the flange nut, the sealing ring is fitted with the flange nut and is located between the flange nut and the sealing gasket.

8. The powder spreading assembly of a digital printing machine according to claim 1, characterized in that: The cross section of the powder storage tank is rectangular, the upper end of the powder storage tank is provided with a top plate, the top plate is provided with a feed port, and the feed port is detachably provided with a sealing assembly; The driving mechanism is a motor, the air pipe joint and the motor are both arranged on the side wall of the powder storage tank, and the output shaft of the motor passes through the outer wall of the powder storage tank to connect with the stirring brush.

9. The powder spreading assembly of a digital printing machine according to claim 8, characterized in that: The sealing assembly includes a nut, a nut and an internal and external thread joint inserted into the feed port, the nut is connected to the external thread of the internal and external thread joint to fix the internal and external thread joint to the feed port, and the nut is detachably connected to the internal thread of the internal and external thread joint.

10. The powder spreading assembly of a digital printing machine according to claim 8, characterized in that: The powder spray head assembly includes a screen, a screen pressing frame and a screen fixing frame for connecting the powder storage tank. The screen fixing frame is provided with a mounting groove, and the bottom surface of the mounting groove is connected to the interior of the powder storage tank. The screen is arranged in the mounting groove and fixed by the screen pressing frame.

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