Code spraying equipment

Abstract

The invention discloses code spraying equipment. The code spraying equipment comprises a code spraying mechanism, a conveying mechanism, a paper collecting mechanism and an air blowing speed reducing mechanism. The code spraying mechanism is used for conducting jet printing on the printing stock. And the conveying mechanism is used for conveying the printed material subjected to jet printing forwards. The paper collecting mechanism comprises a paper collecting tray, a front baffle arranged at the front end of the paper collecting tray and side baffles arranged on the left side and the right side of the paper collecting tray. And the printed material subjected to jet printing is conveyed to a paper collecting tray of the paper collecting mechanism. The air blowing speed reducing mechanism is arranged at the inlet end of the paper collecting tray and provided with a plurality of air outlets. The air outlet is configured to blow downward airflow towards the printing stock so as to slow down the moving speed of the printing stock. According to the code spraying equipment, the air blowing speed reducing mechanism is arranged at the inlet end of the paper collecting tray, so that the printing stock is subjected to the acting force of downward airflow blown by the air blowing speed reducing mechanism when just entering the paper collecting tray, paper disorder caused by too high speed is avoided, and the paper collecting stability is improved.

Description

Technical Field

[0001] The invention relates to the technical field of printing, and in particular to a coding device. Background Art

[0002] With the rapid development of QR code technology, inkjet coding equipment is increasingly used in all walks of life, especially in the printing and packaging industry. After the substrate is printed and dried, it needs to be transported to the paper collection mechanism for collection. With the improvement of production efficiency, the printing speed gradually increases, which makes the conveying speed of the substrate very fast after printing and drying. Due to inertia, even if the substrate is conveyed to the paper collection tray, there will still be a forward conveying speed. Therefore, some individual papers may be collected unevenly, skewed or warped due to excessive speed, that is, there will be a messy paper phenomenon. After the messy paper phenomenon occurs, it is necessary to stop the machine for debugging, which greatly affects production efficiency.

[0003] It should be noted that the statements in this background technology section only provide background technology related to the present invention and do not necessarily constitute prior art. Summary of the invention

[0004] The invention provides a coding device to improve the stability of a paper collection process.

[0005] The present invention provides a coding device, comprising:

[0006] A coding mechanism, used for printing on substrates;

[0007] A conveying mechanism is used to convey the printed substrate forward;

[0008] A paper receiving mechanism, comprising a paper receiving tray, a front baffle plate arranged at the front end of the paper receiving tray, and side baffle plates arranged at the left and right sides of the paper receiving tray. The printed substrate is transported by the transport mechanism to the paper receiving tray of the paper receiving mechanism; and

[0009] The air blowing deceleration mechanism is arranged at the inlet end of the paper receiving tray and has a plurality of air outlets, and the air outlets are configured to blow downward airflow toward the printing substrate to slow down the moving speed of the printing substrate.

[0010] In some embodiments, the plurality of air outlets are configured to be spaced apart in a transverse direction, and the transverse direction is perpendicular to a conveying direction of the substrate.

[0011] In some embodiments, the air blowing deceleration mechanism includes an air cavity extending in a transverse direction, an air inlet is formed at one end of the air cavity, and a plurality of air outlets are arranged at intervals on the cavity wall of the air cavity.

[0012] In some embodiments, the air blowing deceleration mechanism further includes a regulating valve, which is configured to adjust the flow rate and / or pressure of the air flow blown out of the air outlet according to the grammage of the substrate.

[0013] In some embodiments, the inkjet coding device further includes a controller, which is connected to the regulating valve signal and is configured to adjust the flow rate and / or pressure of the air flow blown out of the air outlet according to the grammage of the substrate.

[0014] In some embodiments, the air blowing deceleration mechanism is disposed above the paper receiving tray so that the air outlet blows air from above the substrate.

[0015] In some embodiments, the air blowing speed reduction mechanism further includes an air blowing pipe disposed at the air outlet, and the air outlet position of the air blowing pipe can be adjusted.

[0016] In some embodiments, the air outlet positions of the air blowing pipes corresponding to the multiple air outlets of the air blowing deceleration mechanism are different.

[0017] In some embodiments, the air blow tube comprises a universal bamboo air blow tube.

[0018] In some embodiments, the air blowing tube includes a flat air outlet end.

[0019] In some embodiments, the inkjet coding device also includes a curing mechanism, which is arranged downstream of the inkjet coding mechanism and between the inkjet coding mechanism and the paper receiving mechanism. The printed substrate is transported to the curing mechanism by the conveying mechanism for curing, and after curing, it is further transported to the paper receiving mechanism by the conveying mechanism.

[0020] Based on the technical solution provided by the present invention, the coding device includes a coding mechanism, a conveying mechanism, a paper receiving mechanism and a blowing deceleration mechanism. The coding mechanism is used to print on the substrate. The conveying mechanism is used to convey the printed substrate forward. The paper receiving mechanism includes a paper receiving tray, a front baffle plate arranged at the front end of the paper receiving tray, and side baffle plates arranged on the left and right sides of the paper receiving tray. The printed substrate is conveyed to the paper receiving tray of the paper receiving mechanism by the conveying mechanism. The blowing deceleration mechanism is arranged at the inlet end of the paper receiving tray and has a plurality of air outlets. The air outlet is configured to blow a downward airflow toward the substrate to slow down the moving speed of the substrate. The coding device of the present invention is provided with a blowing deceleration mechanism at the inlet end of the paper receiving tray, so that when the substrate just enters the paper receiving tray, it will be subjected to the force of the downward airflow blown by the blowing deceleration mechanism, thereby slowing down the forward moving speed of the substrate, thereby effectively avoiding the messy paper phenomenon caused by too fast speed, and improving the stability of paper receiving. Moreover, the inkjet coding device of the embodiment of the present invention uses the air flow blown by the air outlet of the air blowing deceleration mechanism to exert a downward force on the substrate and then press the substrate downward to achieve deceleration. Compared with using other structures such as a pressure plate to directly contact the substrate to achieve downward pressing, it can effectively avoid damage to the inkjet coding on the substrate.

[0021] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0023] Figure 1 The present invention is a schematic diagram of a top view of the paper collection mechanism of the inkjet coding device according to some embodiments of the present invention.

[0024] Figure 2 The present invention is a schematic side structural diagram of a paper collection mechanism of a coding device according to some embodiments of the present invention.

[0025] Figure 3 It is a schematic diagram of the structure of the air blowing pipe of the paper collection mechanism of the inkjet coding device in some embodiments of the present invention.

[0026] Figure 4 for Figure 3 A schematic structural diagram of the air outlet end of the air blowing pipe is shown. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0029] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways, and the spatially relative descriptions used here are interpreted accordingly.

[0030] The inventor found during the research that the existing inkjet printers mainly consider the printing speed and quality during the design process, but often fail to pay enough attention to the stability of the paper collection process. In particular, in recent years, the printing speed has increased to 6300~6500 sheets / hour. In such a high-speed production environment, due to inertia, the front baffle is prone to overshoot, skew, and tail lift, which will cause confusion in the paper collection stage and affect the subsequent production process.

[0031] The inventor discovered the above problem and proposed that the main reason for the above paper collection chaos is that the existing inkjet printer does not take into account the dynamic situation of the paper under high-speed conveying conditions, that is, it does not take into account the adverse effects of high-speed conveying on paper collection. Based on this discovery, the present invention proposes to set a blowing deceleration mechanism on the inkjet printer to blow a downward airflow to the paper during the paper collection process, and use the downward airflow to exert a downward force on the paper, thereby slowing down the speed of the paper and improving the stability of paper collection.

[0032] In the description of each embodiment of the present invention, the front end refers to the downstream in the direction of substrate conveying, and the rear end refers to the upstream in the direction of substrate conveying. Figure 1 As shown in FIG. 1 , the conveying direction X of the substrate A is from right to left. Then, Figure 1 As shown, the front end of substrate A refers to Figure 1 The left end of the substrate A refers to Figure 1 The right end of .

[0033] In some embodiments, the substrate comprises wrapping paper.

[0034] refer to Figure 1 and Figure 2 , some embodiments of the present invention provide a coding device including a coding mechanism, a conveying mechanism, a paper receiving mechanism 1 and an air blowing deceleration mechanism 2. The coding mechanism is used to print on a substrate. The conveying mechanism is used to convey the printed substrate forward. The paper receiving mechanism 1 includes a paper receiving tray 11, a front baffle 12 arranged at the front end of the paper receiving tray 11, and side baffles 13 arranged on the left and right sides of the paper receiving tray 11. The printed substrate is conveyed to the paper receiving tray 11 of the paper receiving mechanism 1 by the conveying mechanism. The air blowing deceleration mechanism 2 is arranged at the inlet end of the paper receiving tray 11 and has a plurality of air outlets 21. The air outlet 21 is configured to blow a downward airflow toward the substrate to slow down the moving speed of the substrate.

[0035] The inkjet coding device of the embodiment of the present invention sets an air-blowing deceleration mechanism 2 at the inlet end of the paper receiving tray 11, so that when the substrate A just enters the paper receiving tray 11, it will be affected by the downward airflow blown by the air-blowing deceleration mechanism 2, thereby slowing down the forward movement speed of the substrate A, thereby effectively avoiding the paper mess caused by too fast speed and improving the stability of paper collection. In addition, the inkjet coding device of the embodiment of the present invention uses the airflow blown by the air outlet 21 of the air-blowing deceleration mechanism 2 to exert a downward force on the substrate A and then press the substrate downward to achieve deceleration. Compared with using other structures such as a pressure plate to directly contact the substrate to achieve downward compression, it can effectively avoid damage to the inkjet coding on the substrate.

[0036] like Figure 1As shown, the inlet end of the paper receiving tray 11 refers to the end of the paper receiving tray 11 that receives the printed material, that is, the end where the printed material A enters the paper receiving tray 11. By arranging the air blowing deceleration mechanism 2 at the inlet end of the paper receiving tray 11, the printed material just delivered to the paper receiving tray 11 is subjected to the force of the blowing airflow and then decelerated, and the deceleration effect is better.

[0037] refer to Figure 1 In some embodiments, the plurality of air outlets 21 are arranged at intervals in the transverse direction, and the transverse direction is perpendicular to the conveying direction X of the substrate A. The air blowing deceleration mechanism 2 of the embodiment of the present invention has a plurality of air outlets 21 arranged at intervals in the transverse direction. The plurality of air outlets 21 are used to blow air to different positions of the substrate A to apply downward force to different positions of the substrate A so that the substrate A can be uniformly subjected to the downward force, so that the speeds of different positions of the substrate A are the same, further improving the stability of paper collection.

[0038] In order to further improve the force uniformity of the substrate A, in some embodiments, a plurality of air outlets 21 are evenly arranged in the transverse direction.

[0039] In other embodiments, the air flow interruption of each of the multiple air outlets 21 is independently controlled, so that according to actual conditions, some of the multiple air outlets 21 can be controlled to be connected to achieve blowing and pressing on different positions of the substrate.

[0040] In some embodiments, the air blowing deceleration mechanism 2 includes an air cavity 22 extending in a transverse direction. An air inlet is formed at one end of the air cavity 22. A plurality of air outlets 21 are arranged at intervals on the cavity wall of the air cavity 22. Specifically, the cross-sectional shape of the air cavity 22 is square. For example, the air cavity 22 is a square aluminum shell structure, an air inlet is formed at the first end in the length direction, the second end is closed, and a plurality of air outlets 21 are arranged at intervals on the cavity wall. By setting an air cavity with one air inlet and multiple air outlets, the airflow can be evenly distributed, thereby covering a larger range of substrates.

[0041] The air inlet of the air cavity 22 is connected to the air supply system to introduce air into the air cavity 22, and then the air is blown downward through multiple air outlets 21. The air blown downward applies a downward force to the substrate A to press the substrate downward, thereby slowing down the speed of the substrate and also reducing the gap between the substrate and the tray below or the upper layer of the substrate, thereby allowing it to enter the tray smoothly.

[0042] In a specific embodiment, Figure 1 and Figure 2 As shown, the cross-section of the air cavity 22 is square, and the shape of the air outlet 21 opened on the cavity wall of the air cavity 22 is circular.

[0043] In order to further improve the applicability of the inkjet device of the embodiment of the present invention, in some embodiments, the air blowing deceleration mechanism 2 further includes a regulating valve. The regulating valve is configured to adjust the flow rate and / or pressure of the air flow blown out of the air outlet 21 according to the grammage of the substrate A.

[0044] For substrates with a smaller gram weight, the flow rate or pressure of the blown air flow is reduced; for substrates with a larger gram weight, the flow rate or pressure of the blown air flow is increased. In this way, the pressure of the air flow blown out of the air outlet 21 of the air blowing deceleration mechanism 2 of the embodiment of the present invention is adapted to the thickness of the substrate, avoiding bending or even damage of the substrate due to excessive air flow pressure. It can also avoid the inability to decelerate the substrate due to too low air flow pressure.

[0045] In some embodiments, the inkjet printer further comprises a controller which is connected to the regulating valve signal and is configured to adjust the flow rate and / or pressure of the airflow blown out of the air outlet 21 according to the grammage of the substrate.

[0046] In some embodiments, the inkjet printer further includes an input device, which is used to receive the grammage of the substrate. The input device can be a mouse, keyboard, etc., or a visual recognition device, for example, by setting a visual camera at the paper inlet of the substrate to take a photo of the substrate to identify the type of the substrate, and then obtain the grammage of the substrate. The controller receives the grammage of the substrate input by the input device and calculates the target pressure or target flow of the airflow corresponding to the grammage based on the grammage, and then controls the action of the regulating valve based on the target pressure or target flow.

[0047] The controller of the inkjet device of the embodiment of the present invention controls the action of the regulating valve according to the grammage of the substrate to achieve automatic adjustment of the flow rate and / or pressure of the airflow blown out of the air outlet 21, thereby achieving automatic control and improving control accuracy.

[0048] like Figure 2 As shown, in some embodiments, the air blowing deceleration mechanism 2 is arranged above the paper receiving tray 11 so that the air outlet 21 blows air from above the substrate A. The air blowing deceleration mechanism 2 is arranged above the paper receiving tray 11 with a gap between the air outlet 21 and the paper receiving tray 11, and the air outlet 21 is arranged on the front wall of the air cavity 22. Figure 2 As shown, the air cavity 22 is a square cavity, which includes four walls arranged in sequence in the circumferential direction, wherein the front wall refers to the wall located at the front end. The air outlet 21 is arranged on the front wall.

[0049] The air blowing deceleration mechanism 2 of the embodiment of the present invention is used to blow downward airflow to the printing substrate A to achieve the purpose of decelerating the printing substrate A. The air outlet 21 is arranged on the front wall, which provides space for further arranging an air blowing pipe 23 at the air outlet 21.

[0050] refer to Figure 3 In some embodiments, the air blowing deceleration mechanism 2 further includes an air blowing pipe 23 disposed at the air outlet 21. The air outlet position of the air blowing pipe 23 is adjustable. For example, the air blowing pipe 23 is a flexible pipe, and the air outlet position can be adjusted by adjusting the bending direction of the air blowing pipe 23. For example, the air blowing pipe 23 can be extended forward to achieve blowing to a position that is further forward than the inlet end of the paper receiving tray 11 in the conveying direction, thereby expanding the air outlet position.

[0051] In some embodiments, the air outlet positions of the air pipes 23 corresponding to the multiple air outlets 21 of the air blowing deceleration mechanism are different. Since the multiple air outlets 21 are arranged at different positions in the transverse direction, the different air outlet positions here mainly refer to the fact that the air outlet positions of the air pipes 23 are different in the conveying direction due to the arrangement of the air pipes 23. For example, when the air pipes 23 are flexible pipes, it is possible to extend individual air pipes 23 forward to blow downward airflow to a more forward position of the substrate; and it is possible to extend individual air pipes 23 backward to blow downward airflow to a more backward position of the substrate. In this way, different positions of the area near the inlet end of the substrate A can be subjected to downward pressure, so that the speed of different positions of the substrate can be slowed down, avoiding the phenomenon of paper mess caused by slowing down of some positions while the speed of other parts is still very fast, and further improving the stability of paper collection.

[0052] like Figure 3 As shown, in some embodiments, the air blowing pipe 23 comprises a universal bamboo air blowing pipe. The air blowing pipe is formed by a universal bamboo air blowing pipe, and since the air blowing pipe is formed by multiple pipe sections, and each pipe section can change direction, the air outlet position of the air blowing pipe 23 of this embodiment can be changed more flexibly.

[0053] like Figure 3 and Figure 4 As shown, in some embodiments, the air blowing pipe 23 includes a flat outlet end. The outlet surface of the flat outlet end is more concentrated, and the slowing effect on the substrate is more obvious. Specifically, the flat outlet end can be an elongated outlet, and in some other embodiments, it can also be an oblong shape.

[0054] In some embodiments, the coding device further includes a curing mechanism. The curing mechanism is arranged downstream of the coding mechanism and between the coding mechanism and the paper receiving mechanism 1. The printed substrate is transported by the conveying mechanism to the curing mechanism for curing, and after curing, it is further transported by the conveying mechanism to the paper receiving mechanism.

[0055] That is to say, the paper collection mechanism of the inkjet printer of the embodiment of the present application collects the paper only after the inkjet printer of the substrate is solidified. Therefore, the air blowing deceleration mechanism 2 is also arranged downstream of the solidification mechanism. Figure 2 As shown, the paper receiving mechanism 1 of the embodiment of the present invention includes a frame 15 and a paper receiving tray 11 arranged on the frame 15. The paper receiving tray 11 is movably arranged in the height direction relative to the frame 15, so that the paper receiving tray 11 gradually descends in the process of receiving multiple substrates A in sequence to leave space for receiving the substrates and then forming a substrate stack on the paper receiving tray 11.

[0056] In some embodiments, the coding device is a sheet-fed coding device.

[0057] The inkjet printer of the embodiment of the present invention reduces the phenomenon of messy paper collection by setting an air-blowing deceleration mechanism, and ensures that the printed material can be collected smoothly during high-speed movement by controlling the airflow. It also effectively reduces the loss of paper caused by messy paper and reduces production costs. It reduces production delays caused by shutdown and debugging, makes the production line smoother, and improves production efficiency. Moreover, the air-blowing deceleration mechanism can adapt to papers of different gram weights and meet various production needs.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A coding device, characterized in that: include: A coding mechanism, used for printing on substrates; A conveying mechanism is used to convey the printed substrate forward; A paper receiving mechanism (1) comprising a paper receiving tray (11), a front baffle (12) arranged at the front end of the paper receiving tray (11), and side baffles (13) arranged on the left and right sides of the paper receiving tray (11), wherein the printed substrate is transported by the transport mechanism to the paper receiving tray (11) of the paper receiving mechanism (1); and An air blowing deceleration mechanism (2) is arranged at the inlet end of the paper receiving tray (11) and has a plurality of air outlets (21), wherein the air outlets (21) are configured to blow downward airflow toward the printing substrate to slow down the moving speed of the printing substrate.

2. The coding device according to claim 1, characterized in that: The plurality of air outlets (21) are configured to be spaced apart in a transverse direction, wherein the transverse direction is perpendicular to a conveying direction of the printing material.

3. The coding device according to claim 2, characterized in that: The air blowing speed reduction mechanism (2) comprises an air cavity (22) extending along the transverse direction, an air inlet is formed at one end of the air cavity (22), and a plurality of air outlets (21) are arranged at intervals on the cavity wall of the air cavity (22).

4. The coding device according to claim 1, characterized in that: The air blowing speed reduction mechanism (2) further comprises a regulating valve, wherein the regulating valve is configured to adjust the flow rate and / or pressure of the air flow blown out of the air outlet (21) according to the grammage of the printing material.

5. The coding device according to claim 4, characterized in that: The inkjet coding device further comprises a controller, which is connected to the regulating valve signal and is configured to adjust the flow rate and / or pressure of the air flow blown out of the air outlet (21) according to the grammage of the substrate.

6. The coding device according to claim 1, characterized in that: The air blowing speed reduction mechanism (2) is arranged above the paper receiving tray (11) so that the air outlet blows air from above the printing material.

7. The coding device according to any one of claims 1 to 6, characterized in that: The air blowing speed reduction mechanism (2) further comprises an air blowing pipe (23) arranged at the air outlet (21), and the air outlet position of the air blowing pipe (23) is adjustable.

8. The coding device according to claim 7, characterized in that: The air outlet positions of the air blowing pipes (23) corresponding to the multiple air outlets (21) of the air blowing speed reduction mechanism are different.

9. The coding device according to claim 7, characterized in that: The air blowing pipe (23) comprises a universal bamboo-jointed air blowing pipe.

10. The coding device according to claim 7, characterized in that: The air blowing pipe (23) comprises a flat air outlet end.

11. The coding device according to claim 1, characterized in that: The coding equipment also includes a curing mechanism, which is arranged downstream of the coding mechanism and between the coding mechanism and the paper collection mechanism. The printed substrate is transported by the conveying mechanism to the curing mechanism for curing, and after curing, it is further transported by the conveying mechanism to the paper collection mechanism.

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