Digital printing machine

Abstract

The utility model discloses a digital printing machine, which belongs to the technical field of printing machine design, and comprises a rack, a primary powder storage box, a powder scattering channel and a powder return device, the powder return device comprises a material collecting groove, a transverse spiral conveying rod, a secondary powder storage box and a longitudinal spiral conveying rod, and the material collecting groove is used for collecting jet printing powder scattered from a printing area; the transverse spiral conveying rod is rotationally arranged in the material collecting groove and used for conveying the jet printing powder in the material collecting groove. The secondary powder storage box is arranged at the output end of the transverse spiral conveying rod and is communicated with the transverse spiral conveying rod; the longitudinal spiral conveying rod is arranged between the first-stage powder storage box and the second-stage powder storage box in a communicating mode and used for conveying the jet printing powder in the second-stage powder storage box into the first-stage powder storage box. The digital calico printing machine can recycle jet printing powder which is scattered and is not utilized, so that the waste of raw materials is effectively reduced, and the manufacturing cost is further saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of printing machine design, in particular to a digital printing machine. Background Art

[0002] There is a printing machine including a powder storage box and a powder spreading channel. The powder spreading channel is used to output the printing powder in the powder storage box and sprinkle it on the printing medium, thereby making prints. However, the printing machine is not provided with a recovery device to recover the printing powder that is not used after being scattered. Since the printing powder cannot be recycled, it leads to waste of raw materials, thereby increasing the manufacturing cost.

[0003] Therefore, the existing technology needs to be improved and developed. Utility Model Content

[0004] The utility model aims to provide a digital printing machine, which can recycle the printing powder that has been scattered but not used and realize recycling, effectively reduce the waste of raw materials, and thus save manufacturing costs.

[0005] In a first aspect, the utility model provides a digital printing machine, comprising a frame, a primary powder storage box and a powder spreading channel, wherein the primary powder storage box is arranged on the frame and communicated with the powder spreading channel, and the primary powder storage box is used to store printing powder; the powder spreading channel extends in the left and right directions and is used to transport the printing powder in the primary powder storage box and spread the printing powder in the printing area; and further comprises a powder returning device, wherein the powder returning device comprises:

[0006] A collecting trough, which is arranged on the frame and is located directly below the printing area, and is used to collect the printing powder scattered from the printing area;

[0007] A transverse screw conveying rod, which is rotatably disposed in the collecting trough and extends in the left-right direction, and is used to transport the inkjet printing powder in the collecting trough;

[0008] A secondary powder storage box, which is arranged at the output end of the transverse spiral conveying rod and is connected to the transverse spiral conveying rod, and is used to store the printing powder received from the transverse spiral conveying rod;

[0009] A longitudinal spiral conveying rod is connected and arranged between the primary powder storage box and the secondary powder storage box and extends in the up-down direction. The longitudinal spiral conveying rod is used to transport the printing powder in the secondary powder storage box to the primary powder storage box.

[0010] The digital printing machine provided by the utility model recovers the unused printing powder after being scattered through the collecting trough and transports it back to the primary powder storage box through the spiral conveying rod for continued use, thereby realizing the recycling of the printing powder and achieving the effect of reducing the waste of raw materials and saving the manufacturing cost.

[0011] Furthermore, the first-level powder storage box is provided with a scattering mechanism, which includes a driving device and at least one shaft rod, all of which are located inside the first-level powder storage box and can contact the printing powder in the first-level powder storage box; the driving device is rotatably connected to all of the shaft rods and is used to drive all of the shaft rods to rotate so that the shaft rods stir the printing powder in the first-level powder storage box.

[0012] The breaking up mechanism stirs the printing powder to effectively break up the agglomerated printing powder, ensuring that the printing powder can be normally output through the transverse spiral conveying rod and normally used for printing operations.

[0013] Furthermore, the breaking up mechanism includes a central axis and a plurality of shafts, wherein the plurality of shafts are distributed circumferentially around the central axis and are arranged inclined toward the central axis so as to be located on the same conical surface; the driving device is connected to the central axis and is used to drive all the shafts to rotate by driving the central axis to rotate.

[0014] The cone-shaped breaking mechanism has a compact structure and effectively improves the stirring intensity and speed, making the printing powder fine enough and meeting the dispersion requirements.

[0015] Furthermore, a centralizing portion is provided near the bottom of the first-level powder storage box, the opening area of ​​the centralizing portion gradually decreases from top to bottom, and the bottom of the centralizing portion is connected to the feed port of the powder sprinkling channel.

[0016] The centralizing portion can guide the printing powder to be concentrated at the bottom of the primary powder storage box, so that the powder spreading channel can better output the printing powder, and it is also beneficial to prevent the printing powder from being unable to be used normally due to being distributed in a dead zone.

[0017] Furthermore, the discharge port of the longitudinal spiral conveying rod is located above the concentrated portion.

[0018] Furthermore, the cross-sectional shape of the concentrated portion is V-shaped.

[0019] Furthermore, a feed port of the first-level powder storage box is provided with a grid mesh cover, and the grid mesh cover is located above the centralizing portion.

[0020] Furthermore, the cross-section of the grid mesh cover is V-shaped.

[0021] Furthermore, the first-level powder storage box is provided with a temperature maintaining device for maintaining the temperature of the printing powder in the first-level powder storage box constant.

[0022] Furthermore, the cross-sectional shape of the aggregate trough is V-shaped.

[0023] From the above, it can be seen that the digital printing machine of the utility model collects the unused printing powder after being scattered by setting a collecting trough, and then uses a spiral conveying rod to transport the printing powder in the collecting trough back to the primary powder storage box for recycling. Reusing the printing powder is beneficial to reducing the raw material loss of the printing powder, thereby achieving the effect of saving manufacturing costs.

[0024] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the embodiments of the utility model. The purpose and other advantages of the utility model can be achieved and obtained by the structures specifically pointed out in the written description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The present invention provides a structural schematic diagram of a digital printing machine according to an embodiment of the present invention.

[0026] Figure 2 A partial structural sectional view of a digital printing machine provided in an embodiment of the utility model.

[0027] Figure 3 It is a cross-sectional view of a first-level powder storage box in an embodiment of the utility model.

[0028] Figure 4 It is a cross-sectional view of the aggregate trough and the transverse spiral conveying rod in the embodiment of the utility model.

[0029] Figure 5 It is a structural schematic diagram of the breaking up mechanism in the embodiment of the utility model.

[0030] Description of labels:

[0031] 100, frame; 200, primary powder storage box; 210, scattering mechanism; 211, driving device; 212, shaft; 213, central axis; 220, concentrator; 230, grid cover; 300, powder spreading channel; 400, powder return device; 410, collecting trough; 420, transverse screw conveying rod; 430, secondary powder storage box; 440, longitudinal screw conveying rod; 450, vibration device. DETAILED DESCRIPTION

[0032] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0033] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0034] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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, an electrical connection, or mutual communication; 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 utility model can be understood according to specific circumstances.

[0035] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0036] The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the utility model. In addition, the utility model may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the utility model provides various specific examples of processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0037] It should be noted that the “left-right direction” and “up-down direction” mentioned below are based on the attached Figure 1 The labeled arrows in the figure are used as reference.

[0038] Reference Figure 1 and attached Figure 2 The utility model provides a digital printing machine, including a frame 100, a primary powder storage box 200 and a powder spreading channel 300. The primary powder storage box 200 is arranged on the frame 100 and communicated with the powder spreading channel 300. The primary powder storage box 200 is used to store printing powder; the powder spreading channel 300 extends in the left and right directions and is used to transport the printing powder in the primary powder storage box 200 and make the printing powder fall in the printing area;

[0039] The digital printing machine further includes a powder recycling device 400, which includes:

[0040] A collecting trough 410, which is disposed on the frame 100 and is located directly below the printing area. The collecting trough 410 is used to collect the printing powder scattered from the printing area;

[0041] A transverse spiral conveying rod 420, which is rotatably disposed in the collecting trough 410 and extends in the left-right direction. The transverse spiral conveying rod 420 is used to transport the printing powder in the collecting trough 410;

[0042] A secondary powder storage box 430, which is disposed at the output end of the transverse spiral conveying rod 420 and is in communication with the transverse spiral conveying rod 420, and is used to store the printing powder received from the transverse spiral conveying rod 420;

[0043] The longitudinal spiral conveying rod 440 is connected and arranged between the primary powder storage box 200 and the secondary powder storage box 430 and extends in the up-down direction. The longitudinal spiral conveying rod 440 is used to transport the printing powder in the secondary powder storage box 430 to the primary powder storage box 200.

[0044] In this embodiment, in actual application, the printing powder is transported from the primary powder storage box 200 to the powder spreading channel 300 and scattered in the printing area, wherein the unused printing powder will be gathered in the collecting trough 410 under the action of gravity, and the printing powder in the collecting trough 410 is transferred and stored in the secondary powder storage box 430 under the drive of the transverse spiral conveying rod 420, and the printing powder in the secondary powder storage box 430 will be transferred and stored in the primary powder storage box 200 again under the drive of the longitudinal spiral conveying rod 440, thereby realizing the recycling of unused printing powder, achieving the effect of reducing the waste of printing raw materials, protecting environment and saving energy, and reducing manufacturing costs.

[0045] In certain embodiments, referring to Figure 2 , Attachment Figure 3 and attached Figure 5 The first-level powder storage box 200 is provided with a scattering mechanism 210, which includes a driving device 211 and at least one shaft rod 212. All shaft rods 212 are located inside the first-level powder storage box 200 and can contact the printing powder in the first-level powder storage box 200; the driving device 211 is rotatably connected to all shaft rods 212 and is used to drive all shaft rods 212 to rotate so that the shaft rods 212 stir the printing powder in the first-level powder storage box 200.

[0046] In actual application, the printing powder may clump due to moisture. In this embodiment, a breaking mechanism 210 is provided in the primary powder storage box 200 to stir the printing powder, which can effectively break up the clumped printing powder, thereby ensuring that the printing powder can be normally output through the transverse spiral conveying rod and used normally in printing operations.

[0047] Furthermore, the first-level powder storage box 200 is provided with a temperature maintaining device (not shown) for maintaining the temperature of the printing powder in the first-level powder storage box 200 at a constant level. The temperature maintaining device can keep the printing powder in the first-level powder storage box 200 dry, thereby preventing the printing powder from agglomerating at the source, and is also beneficial for maintaining the quality of the printing powder, thereby producing high-quality prints.

[0048] It should be noted that the temperature maintaining device is, for example, a thermostat, a constant temperature system, etc. The temperature maintaining device belongs to the prior art and will not be described in detail here.

[0049] In certain embodiments, referring to Figure 2 , Attachment Figure 3 and attached Figure 5The breaking mechanism 210 includes a central axis 213 and a plurality of shafts 212. The plurality of shafts 212 are circumferentially distributed around the central axis 213 and are arranged inclined toward the central axis 213 so as to be located on the same conical surface. The driving device 211 is connected to the central axis 213 and is used to drive all the shafts 212 to rotate by driving the central axis 213 to rotate. The breaking mechanism 210 is designed to be in a cone shape, which has a compact structure and effectively improves the stirring intensity and speed, so that the printed powder is fine enough and meets the dispersion requirements.

[0050] In certain embodiments, referring to Figure 2 and attached Figure 3 A centralizing portion 220 is provided near the bottom of the first-level powder storage box 200. The opening area of ​​the centralizing portion 220 gradually decreases from top to bottom, and the bottom of the centralizing portion 220 is connected with the feed port of the powder sprinkling channel 300. The centralizing portion 220 can guide the printing powder to be concentrated at the bottom of the first-level powder storage box 200, so that the powder sprinkling channel 300 can better output the printing powder. At the same time, it is also beneficial to avoid the printing powder from being unable to be used normally due to being distributed in the dead zone.

[0051] In certain embodiments, referring to Figure 3 The discharge port of the longitudinal spiral conveying rod 440 is located above the concentrated portion 220. Since the printing powder will gather in the concentrated portion 220, setting the discharge port of the longitudinal spiral conveying rod 440 above the concentrated portion 220 can ensure that the recovered printing powder is normally input into the primary powder storage box 200, which is conducive to avoiding the recovered printing powder from clogging the longitudinal spiral conveying rod 440.

[0052] In certain embodiments, referring to Figure 2 and attached Figure 3 The cross-sectional shape of the centralizing portion 220 is V-shaped, and the V-shaped slope can guide the printing powder, so that the printing powder in the first-level powder storage box 200 is more concentrated, avoiding the printing powder from being unable to be used normally due to being distributed in the dead zone.

[0053] In certain embodiments, referring to Figure 1 , Attachment Figure 2 and attached Figure 3 The feed port of the first-level powder storage box 200 is provided with a grid mesh cover 230, and the grid mesh cover 230 is located above the central part 220. When the first-level powder storage box 200 is replenished with printing powder, the grid mesh cover 230 is equivalent to filtering and breaking up the printing powder. On the one hand, it can prevent the agglomerated printing powder from entering the first-level powder storage box 200. On the other hand, the user can also apply pressure to the agglomerated printing powder so that the grid mesh cover 230 breaks up the agglomerated printing powder.

[0054] In certain embodiments, referring to Figure 1 , Attachment Figure 2 and attached Figure 3 The cross-sectional shape of the grid mesh cover 230 is V-shaped. When the printing powder is added to the primary powder storage box 200, the V-shaped grid mesh cover 230 can concentrate the input of the printing powder, thereby avoiding the impact on the surrounding environment caused by the overflow of the printing powder.

[0055] In certain embodiments, referring to Figure 4 The cross-sectional shape of the collecting trough 410 is V-shaped. The V-shaped collecting trough 410 can better collect the scattered printing powder and centrally transport it by the transverse spiral conveying rod 420, thereby improving the recovery rate and better reducing the raw material loss of the printing powder.

[0056] In certain embodiments, referring to Figure 2 The secondary powder storage box 430 is connected to a vibration device 450 , and the vibration device 450 is used to drive the secondary powder storage box 430 to vibrate to evenly shake the printing powder in the secondary powder storage box 430 .

[0057] In actual applications, when the transverse screw conveying rod 420 conveys the printing powder to the secondary powder storage box 430, the printing powder often accumulates at the end of the transverse screw conveying rod 420 and blocks the transverse screw conveying rod 420. Therefore, this embodiment drives the secondary powder storage box 430 to vibrate through the vibration device 450 to evenly shake the printing powder in the secondary powder storage box 430, thereby avoiding the accumulation of printing powder at the end of the transverse screw conveying rod 420, thereby preventing the transverse screw conveying rod 420 from being blocked.

[0058] It should be noted that the vibration device can be but is not limited to a vibration motor, an electromagnetic vibrator, an ultrasonic vibrator, etc.; the vibration device belongs to the prior art and will not be described in detail here.

[0059] In the description of this specification, the description with reference to the terms "one embodiment", "certain embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0060] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A digital printing machine, comprising a frame (100), a primary powder storage box (200) and a powder spreading channel (300), wherein the primary powder storage box (200) is arranged on the frame (100) and is connected to the powder spreading channel (300), and the primary powder storage box (200) is used to store printing powder; the powder spreading channel (300) extends in the left-right direction and is used to transport the printing powder in the primary powder storage box (200) and to spread the printing powder in a printing area; characterized in that: It also includes a powder returning device (400), the powder returning device (400) comprising: A collecting trough (410), the collecting trough (410) being arranged on the frame (100) and located directly below the printing area, the collecting trough (410) being used to collect printing powder scattered from the printing area; a transverse spiral conveying rod (420), the transverse spiral conveying rod (420) being rotatably disposed in the material collecting trough (410) and extending in the left-right direction, the transverse spiral conveying rod (420) being used to transport the inkjet printing powder in the material collecting trough (410); a secondary powder storage box (430), the secondary powder storage box (430) being arranged at the output end of the transverse spiral conveying rod (420) and being in communication with the transverse spiral conveying rod (420), the secondary powder storage box (430) being used to store the printing powder received from the transverse spiral conveying rod (420); A longitudinal spiral conveying rod (440), the longitudinal spiral conveying rod (440) being arranged in communication between the primary powder storage box (200) and the secondary powder storage box (430) and extending in the up-down direction, the longitudinal spiral conveying rod (440) being used to transport the printing powder in the secondary powder storage box (430) to the primary powder storage box (200).

2. The digital printing machine according to claim 1, characterized in that: The primary powder storage box (200) is provided with a scattering mechanism (210), the scattering mechanism (210) comprising a driving device (211) and at least one shaft (212), all of the shafts (212) are located inside the primary powder storage box (200) and are capable of contacting the inkjet powder in the primary powder storage box (200); the driving device (211) is rotatably connected to all of the shafts (212) and is used to drive all of the shafts (212) to rotate so that the shafts (212) stir the inkjet powder in the primary powder storage box (200).

3. The digital printing machine according to claim 2, characterized in that: The dispersing mechanism (210) comprises a central axis (213) and a plurality of shafts (212), wherein the plurality of shafts (212) are circumferentially distributed around the central axis (213) and are arranged inclined toward the central axis (213) so as to be located on the same conical surface; the driving device (211) is connected to the central axis (213) and is used to drive all the shafts (212) to rotate by driving the central axis (213) to rotate.

4. The digital printing machine according to claim 1, characterized in that: A centralizing portion (220) is provided near the bottom of the first-level powder storage box (200), the opening area of ​​the centralizing portion (220) gradually decreases from top to bottom, and the bottom of the centralizing portion (220) is connected to the feed port of the powder sprinkling channel (300).

5. The digital printing machine according to claim 4, characterized in that: The discharge port of the longitudinal spiral conveying rod (440) is located above the central portion (220).

6. The digital printing machine according to claim 4, characterized in that: The cross-sectional shape of the concentrated portion (220) is V-shaped.

7. The digital printing machine according to claim 4, characterized in that: The feed inlet of the primary powder storage box (200) is provided with a grid mesh cover (230), and the grid mesh cover (230) is located above the centralizing portion (220).

8. The digital printing machine according to claim 7, characterized in that: The cross-sectional shape of the grid mesh cover (230) is V-shaped.

9. The digital printing machine according to claim 1, characterized in that: The primary powder storage box (200) is provided with a temperature maintaining device for maintaining the temperature of the printing powder in the primary powder storage box (200) constant.

10. The digital printing machine according to claim 1, characterized in that: The cross-sectional shape of the aggregate trough (410) is V-shaped.

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