Ink-jet printer and ink supply device thereof

Abstract

The utility model relates to an ink-jet printer and an ink supply device thereof. The ink supply device of the ink-jet printer comprises an ink tank; the ink bag is used for containing ink, and the ink bag is fixed in the ink tank; the liquid preparation unit is detachably connected with the ink tank, the liquid preparation unit comprises an air inlet, a steel needle and a liquid outlet, the steel needle is provided with a hollow cavity, and the liquid outlet is communicated with the cavity of the steel needle; the air inlet is communicated with the ink tank, so that air input through the air inlet enters the ink tank; and the steel needle is inserted into the ink bag, so that ink in the ink bag flows out through the steel needle. Compared with the prior art, an additional liquid supplementing device is not needed, the structure is simple, the ink bag can be quickly replaced, the operation is simple, and the code spraying efficiency cannot be influenced.

Description

Technical Field

[0001] This utility model relates to the field of printing technology, and in particular to an inkjet printer and its ink supply device. Background Technology

[0002] Inkjet printers are devices that use charged ink particles deflected by an electric field to mark products in a non-contact manner. They are widely used in the food, cosmetics, pharmaceutical, automotive parts processing, wire and cable, aluminum-plastic pipe, tobacco and alcohol, and other fields. They can be used to print production dates, batch numbers, barcodes, trademarks, anti-counterfeiting marks, and Chinese characters.

[0003] Inkjet printers generally consist of a printing unit, an ink supply system, and a control system. The ink supply system is primarily responsible for ink supply and recycling. Please refer to [link / reference]. Figure 1 Chinese Patent 201921968162.9 discloses an ink reservoir for an inkjet printer, comprising a bottle body 1, a filling funnel 2, and a pressure safety membrane 3. The filling funnel 2 is fixedly connected to the top of the bottle body 1 via a one-way valve 4. The pressure safety membrane 3 is fixedly installed on a through-hole 5 at the top of the bottle body 1. Additionally, the upper part of the bottle body 1 is connected to a pressure venting device and the inkjet printer printhead via a three-way valve 6, and is also connected to an external pressurizing device via a pipe. When ink needs to be added to the bottle, simply close the external pressurizing device, then open the valve connected to the pressure venting device (three-way valve 6) to release pressure from the bottle body 1, and then open the one-way valve 4 to add ink to the bottle body 1 through the filling funnel 2. By observing the ink level display 7, once the predetermined ink volume is reached, ink addition can be stopped, and the one-way valve can be closed.

[0004] The aforementioned ink reservoir requires a special refill device to add ink, which is complex in structure, cumbersome in operation, and time-consuming. Utility Model Content

[0005] Based on this, the purpose of this utility model is to overcome the shortcomings and deficiencies in the prior art and provide a coding machine and its ink supply device.

[0006] In a first aspect, this utility model provides an ink supply device for an inkjet printer, comprising:

[0007] Ink canister;

[0008] An ink bag is used to hold ink, and the ink bag is fixed inside the ink container;

[0009] The liquid preparation unit is detachably connected with the ink tank, and comprises an air inlet, a steel needle and a liquid outlet.

[0010] Compared with the prior art, the utility model need not set up additional liquid supplementing device, simple structure can realize ink bag replacement faster, simple operation will not affect the code efficiency.

[0011] In one of the embodiments, further comprising:

[0012] The fixing assembly is detachably connected with the opening end of the ink tank, and is provided with a plurality of notches in communication with the inside of the ink tank, and the air inlet is communicated with the ink tank through the notches.

[0013] In one of the embodiments, the fixing assembly comprises:

[0014] The bottom plate is provided with a through hole;

[0015] The connecting part extends axially from the edge of the through hole and is used for connecting with the opening end of the ink bag;

[0016] The clamping part extends axially from the edge of the bottom plate and is used for connecting with the opening end of the ink tank.

[0017] In one of the embodiments, the notches are arranged at intervals along the circumference of the clamping part.

[0018] In one of the embodiments, the opening end of the ink bag is provided with a thread, and the thread is matched with the clamping part of the fixing assembly, so that the ink bag is fixed on the fixing assembly.

[0019] In one of the embodiments, the opening end of the ink bag is provided with a cover, and the cover covers the opening end of the ink bag.

[0020] In one of the embodiments, the end of the steel needle penetrates through the cover, so that the ink in the ink bag flows out through the steel needle.

[0021] In one of the embodiments, the liquid preparation unit is threadedly connected with the opening end of the ink tank.

[0022] In one of the embodiments, further comprising a pressure sensor, and the pressure sensor is fixed on the liquid preparation unit.

[0023] The utility model provides a kind of ink supply device of ink-jet printer, including ink-jet printer main body and the ink supply device of the ink-jet printer as any preceding, the liquid preparation unit is connected with the print head of the ink-jet printer. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the structure diagram of ink-jet printer ink storage bottle of prior art;

[0025] Figure 2 It is the front view of the ink supply device of the ink-jet printer of the utility model;

[0026] Figure 3 It is the explosion view of the ink supply device of the ink-jet printer of the utility model;

[0027] Figure 4 It is the structure diagram of ink bag of the ink supply device one embodiment of the ink-jet printer of the utility model;

[0028] Figure 5 It is the structure diagram of fixed assembly of the ink supply device one embodiment of the ink-jet printer of the utility model;

[0029] Figure 6 It is the explosion view of liquid preparation unit of the ink supply device one embodiment of the ink-jet printer of the utility model. DETAILED DESCRIPTION

[0030] To make the above purpose, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below. In the following description, a lot of specific details are set forth in order to fully understand the present application. But the present application can be implemented in many other ways different from the description, and those skilled in the art can make similar improvements without departing from the connotation of the present application, so the present application is not limited by the following disclosed specific embodiments.

[0031] In the description of the present application, if these terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the 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 particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application.

[0032] In addition, the terms "first", "second", "third", "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implying the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the term "a plurality of" means at least two, for example two, three, etc., unless otherwise explicitly specified and limited.

[0033] In the present application, unless otherwise explicitly specified and limited, if the terms "mounting", "connecting", "connecting", "fixing" and the like appear, these terms should be broadly understood. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] In the present application, unless otherwise explicitly specified and limited, if the first feature is described as "on" or "below" the second feature and the like, it can mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be the first feature directly above or obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature "below", "below" and "below" the second feature can be the first feature directly below or obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0035] The technical scheme of the present application will be described in detail below with specific embodiments.

[0036] Please refer to Figure 2 The ink supply device of the inkjet printer comprises an ink storage unit 10 and a liquid preparation unit 20, and the ink storage unit 10 is detachably connected with the liquid preparation unit 20. Among them, the ink storage unit 10 is used to contain ink, and the liquid preparation unit 20 supplies the ink in the ink storage unit 10 to the print head of the inkjet printer.

[0037] Please refer to Figure 3 The ink storage unit 10 comprises an ink tank 102, an ink bag 104 and a fixing assembly 106. The top end of the ink tank 102 is provided with an opening, and the outer side of the opening area is provided with a threaded structure for connecting with the liquid preparation unit 20. The ink tank 102 has a containing cavity, which can be of a type commonly used in the art, and the present application does not make specific limitations. Please refer to Figure 4The ink bag 104 includes a bag body 1042 containing ink and a cover 1044 covering the open end of the bag body 1042. The outer side of the open end of the bag body 1042 is provided with threads for cooperation with the fixing assembly 106 to fix the ink bag 104 on the fixing assembly 106. Please refer to Figure 5 The fixing assembly 106 includes a bottom plate 1062, connecting portions 1064 and a clamping portion 1066. The bottom plate 1062 is provided with a through hole, and the connecting portions 1064 extend axially from the edge of the through hole. The inner wall of each connecting portion 1064 is provided with threads for buckling cooperation with the threads on the outer side of the open end of the bag body 1062, so that the ink bag 104 is connected with the fixing assembly 106. The clamping portion 1066 extends axially from the edge of the bottom plate 1062 and clamps the open end of the ink tank 102 to form a support structure for the bag body 1042, so that the bag body 1042 and the ink tank 102 are relatively stably connected with a pre-set gap, which facilitates the pressurized gas to enter the ink tank 102 and press the ink in the bag body 1042 to maintain a pre-set pressure for outward spraying. The clamping portion 1066 is provided with a plurality of circumferentially spaced gaps, so that the interior of the ink tank 102 can be communicated with the outside after the ink tank 102 is connected with the fixing assembly 106, which facilitates the pressurized gas to enter the ink tank 102 through the gaps after entering the liquid dispensing unit 20 through the gas inlet 202.

[0038] Please refer to Figure 1 、 6 The liquid dispensing unit 20 is a cover structure, and the inner wall is provided with threads for cooperation with the open end of the ink tank 102, so that the liquid dispensing unit 20 and the ink storage unit 10 can be fixedly connected. The liquid dispensing unit 20 includes a gas inlet 202, a steel needle 204, a liquid outlet 206 and a pressure sensor 208. In use, the gas inlet 202 is connected with the external pressurizing device through a pipeline, so that the gas can enter the space between the liquid dispensing unit 20 and the ink storage unit 20 through the gas inlet 202 and then enter the interior of the ink tank 102 through the gaps of the clamping portion 1066. The steel needle 204 has a hollow cavity, one end of the liquid outlet 206 is communicated with the cavity of the steel needle 204, and the other end is connected with the print head of the inkjet printer. In use, the liquid dispensing unit 20 is connected with the ink storage unit 10, the tip of the steel needle 204 penetrates through the cover 1044 of the ink bag 104 and enters the interior of the ink bag 104. Under the pressure of the pressurized gas, the ink in the ink bag 104 can flow out through the cavity of the steel needle 204 and the liquid outlet 206 to realize the ink supply for the print head of the inkjet printer. The pressure sensor 208 is used to detect whether the gas pressure in the ink tank 102 meets the standard, so as to ensure the stability of the ink supply.

[0039] When the ink in the ink bag 104 is used up, a new ink bag 104 needs to be replaced. First, the liquid preparation unit 20 is separated from the ink storage unit 10, the ink bag 104 and the fixing assembly 106 are taken out from the ink tank 102, and then the ink bag 104 is taken off from the fixing assembly 106. Subsequently, the new ink bag 104 is connected with the connecting part 1064 of the fixing assembly 106, so that the ink bag 104 is fixed on the fixing assembly 106; the ink bag 104 is placed in the accommodating cavity of the ink tank 102, and the clamping part 1066 of the fixing assembly 106 is clamped with the opening end of the ink tank 102, so that the assembled ink storage unit 10 is obtained, and finally the ink storage unit 10 is connected with the liquid preparation unit 20. When not in use, the ink storage unit 10 and the liquid preparation unit 20 are stored separately. In use, the ink storage unit 10 and the liquid preparation unit 20 are connected and assembled, and in the connecting and assembling process of the ink storage unit 10 and the liquid preparation unit 20, the distal end of the steel needle 204 penetrates the cover 1044 of the ink bag 104 and enters the inside of the ink bag 104. When the gas enters the inside of the ink tank 102 through the gas inlet 202, the ink bag 104 is squeezed, and the ink in the ink bag 104 can flow out through the cavity of the steel needle 204 and the liquid outlet 206, so as to realize the ink supply of the print head of the ink-jet printer.

[0040] Compared with the prior art, the utility model need not set up additional liquid supplementing device, simple structure, and can realize ink bag replacement faster, simple operation, and will not affect the code printing efficiency.

[0041] Further, the utility model also provides a kind of ink-jet printer, including ink-jet printer main body and the ink supply device of preceding ink-jet printer. Wherein, liquid outlet 206 connects the print head of ink-jet printer.

[0042] The technical features of the above-described embodiments can be combined arbitrarily, and to make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, however, as long as the combinations of the technical features do not exist contradictory, it should be considered that it is within the scope of the present application.

[0043] The above-described embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as limiting the patent application scope. It should be pointed out that for ordinary skilled person in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. An ink supply device for an inkjet printer, characterized by comprising: The ink tank comprises: an ink tank; an ink bag for containing ink, the ink bag being fixed in the ink tank; a liquid preparation unit detachably connected with the ink tank, the liquid preparation unit comprising an air inlet, a steel needle and a liquid outlet, the steel needle having a hollow cavity, the liquid outlet being in communication with the cavity of the steel needle; the air inlet being in communication with the ink tank so that air input through the air inlet enters the interior of the ink tank; the steel needle being inserted into the ink bag so that ink in the ink bag flows out through the steel needle.

2. The ink supply device for an inkjet printer according to claim 1, wherein Further comprising: a fixing assembly detachably connected with the open end of the ink tank, the fixing assembly being provided with a plurality of notches in communication with the interior of the ink tank, the air inlet being in communication with the ink tank through the notches.

3. Ink supply device for an inkjet printer according to claim 2, characterized in that The fixing assembly comprises: a bottom plate, the bottom plate being provided with a through hole; a connecting portion extending axially from the edge of the through hole, for connecting with the open end of the ink bag; a clamping portion extending axially from the edge of the bottom plate, for connecting with the open end of the ink tank.

4. Ink supply device for an inkjet printer according to claim 3, characterized in that The notches are arranged along the circumference of the clamping portion.

5. The ink supply device for an inkjet printer according to claim 3, wherein The open end of the ink bag is provided with a thread, the thread being matched with the connecting portion of the fixing assembly so that the ink bag is fixed on the fixing assembly.

6. Ink supply device for an inkjet printer according to claim 5, characterized in that The open end of the ink bag is provided with a cover, the cover being arranged on the open end of the ink bag.

7. Ink supply device for an inkjet printer according to claim 6, characterized in that The end of the steel needle penetrates through the cover so that ink in the ink bag flows out through the steel needle.

8. Ink supply device for an inkjet printer according to any of claims 1-7, characterized in that The liquid preparation unit is threadedly connected with the open end of the ink tank.

9. Ink supply device for an inkjet printer according to any one of claims 1-7, characterized in that Further comprising a pressure sensor, the pressure sensor being fixed on the liquid preparation unit.

10. An inkjet printer characterized by comprising: An ink supply device of an inkjet printer comprising the inkjet printer body and the ink supply device of any one of claims 1-9, the liquid preparation unit being connected with the print head of the inkjet printer.

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