A suction-blow switching mechanism and a printing apparatus

Abstract

A suction-blow switching mechanism and printing equipment are disclosed, relating to the field of printing equipment technology. The mechanism includes an air outlet pipe, a positive pressure air pipe, a negative pressure air pipe, and a switching component. The switching component includes a switching base, a connector, a connecting air pipe, and a driving component. The switching base has a positive pressure port and a negative pressure port. The connector has an air inlet and an air outlet that communicate with each other. One end of the air outlet pipe is connected to the air outlet of the connector, and the other end extends to the printing platform. One end of the connecting air pipe is connected to the air inlet of the connector, and the other end is a connecting end. The driving component drives the connecting air pipe to move, causing its connecting end to form a sealed connection with the positive or negative pressure port of the switching base to achieve conductivity. Using this technical solution, suction-blow switching can be achieved during continuous printing and material changing, ensuring that the printing platform stably adsorbs the printing medium during continuous printing and blows the printing medium away during material changing, thus improving printing efficiency and printing quality.

Description

Technical Field

[0001] This utility model relates to the field of printing equipment technology, specifically to a suction-blowing switching mechanism and a printing device. Background Technology

[0002] In the field of industrial high-precision printing, ensuring stable adhesion of thin media such as flexible films to the platform throughout the printing process is crucial for quality assurance when printing continuously. Currently, negative pressure adsorption platforms are the mainstream fixation solution. The uniform negative pressure generated by the platform's micropores effectively prevents the media from shifting or warping during printing, thus guaranteeing printing accuracy.

[0003] However, during the material change preparation stage, that is, after a batch of printing tasks is completed and before the next printing medium needs to be changed, due to factors such as negative pressure adsorption and static electricity, the printed film will adhere tightly to the platform surface and is difficult to peel off. This requires operators to spend a lot of time manually prying and tearing it off, which not only easily scratches the precision platform or damages the printed products, but also seriously hinders the continuity of production and the automation process. Utility Model Content

[0004] The purpose of this application is to provide a suction-blowing switching mechanism and printing equipment that can effectively solve the problem of thin printing media being difficult to peel off during the material changing stage when performing continuous printing, while ensuring the stability and accuracy of the printing process.

[0005] The technical solution adopted by this utility model is: a suction and blow switching mechanism, including an air outlet pipe for providing airflow to the printing platform, a positive pressure air pipe for providing positive pressure airflow, a negative pressure air pipe for providing negative pressure airflow, and a switching component for controlling the connection between the air outlet pipe and the positive pressure air pipe or the negative pressure air pipe. The switching assembly includes a switching base, a connector, a connecting air pipe, and a driving component. The switching base has a positive pressure port communicating with a positive pressure air pipe and a negative pressure port communicating with a negative pressure air pipe. The connector has an air inlet and an air outlet communicating with each other. One end of the air outlet pipe is connected to the air outlet of the connector, and the other end extends to the printing platform. One end of the connecting air pipe is connected to the air inlet of the connector, and the other end is the connecting end. The driving component is used to drive the connecting air pipe to move so that its connecting end forms a sealed connection with the positive pressure port or negative pressure port of the switching base to achieve conductivity.

[0006] Optionally, the switching assembly further includes a sliding seat slidably disposed on the switching base. The sliding seat has a communication port that is sealed and communicates with the connection end of the connecting air pipe. The output end of the driving component is connected to the sliding seat. The switching base is provided with a positive pressure station and a negative pressure station. The sliding seat moves back and forth between the positive pressure station and the negative pressure station under the drive of the driving component. When the driving component drives the sliding seat to move to the positive pressure station, the connecting port on the sliding seat is aligned with the positive pressure port and connected. The positive pressure airflow in the positive pressure air pipe passes through the positive pressure port, the connecting air pipe, the air inlet of the connector, and the air outlet of the connector in sequence before entering the air outlet pipe. When the driving component drives the sliding seat to move to the negative pressure station, the connecting port on the sliding seat is aligned with the negative pressure port and connected. The negative pressure airflow in the negative pressure air pipe passes through the negative pressure port, the connecting air pipe, the air inlet of the connector, and the air outlet of the connector in sequence before entering the air outlet pipe.

[0007] Optionally, the driving component includes a driving cylinder fixedly mounted on the switching seat, and the power rod of the driving cylinder is fixedly connected to the sliding seat to drive the sliding seat to move back and forth between the positive pressure station and the negative pressure station.

[0008] Optionally, the sliding seat has an annular sealing groove on the side facing the switching seat, the communication port is located inside the annular sealing groove, and an annular sealing ring is provided inside the annular sealing groove.

[0009] Optionally, the switching seat is provided with a guide rail, and the sliding seat is provided with a slider that slides with the guide rail.

[0010] Optionally, it also includes an upper connector fixedly disposed on the bottom side of the printing platform, wherein one end of the air outlet pipe extending to the printing platform is connected to the upper connector.

[0011] Optionally, the number of air outlets, air outlet pipes, and upper connectors of the connector may be multiple.

[0012] Optionally, the outlet pipe is equipped with a ball valve for adjusting the flow rate of the gas inside it.

[0013] Optionally, the end of the positive pressure pipe away from the positive pressure port is connected to a positive pressure airflow supply device, and the end of the negative pressure pipe away from the negative pressure port is connected to a negative pressure airflow supply device.

[0014] This application also provides a printing device, including a body, a printing platform, a printing mechanism, and a suction-blowing switching mechanism as described above.

[0015] After adopting the above technical solution, the beneficial effects of this utility model are as follows: During continuous printing, this application uses a drive unit to create a sealed connection between the connecting end of the air pipe and the negative pressure port, connecting the negative pressure air pipe and the outlet air pipe. This generates a uniform negative pressure on the printing platform, ensuring stable adhesion of thin printing media and guaranteeing printing accuracy. During the material change phase, the drive unit creates a sealed connection between the connecting end of the air pipe and the positive pressure port, connecting the positive pressure air pipe and the outlet air pipe. Positive pressure airflow enters the outlet air pipe and is blown out through the micropores of the printing platform, separating the printed film from the platform surface. This solves the problem of difficult peeling during the material change phase and avoids damage to the printing platform and printed products caused by manual prying and tearing, thus improving printing efficiency and printing quality. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the suction and blowing switching mechanism provided in this embodiment; Figure 2 It is a schematic diagram used to illustrate the cooperation relationship between the switching seat, connector, connecting pipe, drive cylinder and sliding seat; Figure 3 It is a schematic diagram used to illustrate the cooperation relationship between the switching seat, the drive cylinder, and the sliding seat; Figure 4 It is a schematic diagram used to illustrate the positional relationship between the connecting port, annular sealing groove, and annular sealing ring on the sliding seat; Figure 5 It is a schematic diagram used to illustrate the positional relationship between the suction and blow switching mechanism and the body, printing platform and printing mechanism of the printing equipment.

[0018] Explanation of reference numerals in the attached drawings: 100, suction / blowing switching mechanism; 10, air outlet pipe; 11, ball valve; 20, positive pressure air pipe; 30, negative pressure air pipe; 40, switching component; 41, switching seat; 411, positive pressure port; 412, negative pressure port; 413, positive pressure station; 414, negative pressure station; 415, guide rail; 42, connector; 421, air inlet; 422, air outlet; 43, connecting air pipe; 431, connecting end; 44, drive cylinder; 45, sliding seat; 451, connecting port; 452, annular sealing groove; 453, annular sealing ring; 454, slider; 50, upper connector; 200, machine body; 300, printing platform; 400, printing mechanism. Detailed Implementation

[0019] The following will refer to the appendix in the embodiments of this utility model. Figures 1-5 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0020] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0021] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, if the word "and / or" appears throughout the text, it means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0022] A suction-blowing switching mechanism 100, as shown in the reference Figures 1-5 It includes an air outlet pipe 10 for providing airflow to the printing platform 200, a positive pressure air pipe 20 for providing positive pressure airflow, a negative pressure air pipe 30 for providing negative pressure airflow, and a switching component 40 for controlling the connection between the air outlet pipe 10 and the positive pressure air pipe 20 or the negative pressure air pipe 30.

[0023] The switching assembly 40 includes a switching base 41, a connector 42, a connecting air pipe 43, and a driving component. The switching base 41 has a positive pressure port 411 that communicates with the positive pressure air pipe 20 and a negative pressure port 412 that communicates with the negative pressure air pipe 30. The connector 42 has an air inlet 421 and an air outlet 422 that communicate with each other. One end of the air outlet pipe 10 communicates with the air outlet 422 of the connector 42, and the other end extends to the printing platform 200. One end of the connecting air pipe 43 communicates with the air inlet 421 of the connector 42, and the other end is a connecting end 431. The driving component is used to drive the connecting air pipe 43 to move so that its connecting end 431 forms a sealed connection with the positive pressure port 411 or the negative pressure port 412 of the switching base 41 to achieve conduction.

[0024] During operation, when positive pressure airflow is required, the drive unit moves the connecting air pipe 43, causing the connecting end 431 of the connecting air pipe 43 to form a sealed connection with the positive pressure port 411 of the switching seat 41. At this time, the positive pressure airflow in the positive pressure air pipe 20 passes through the positive pressure port 411, the connecting air pipe 43, and the connector 42 in sequence, and is then delivered to the printing platform 200 through the air outlet pipe 10. When negative pressure airflow is required, the drive unit moves the connecting air pipe 43 again, causing the connecting end 431 of the connecting air pipe 43 to form a sealed connection with the negative pressure port 412 of the switching seat 41. In this way, the negative pressure airflow in the negative pressure air pipe 30 passes through the negative pressure port 412, the connecting air pipe 43, and the connector 42 in sequence, and is finally delivered to the printing platform 200 through the air outlet pipe 10, thereby realizing the suction and blow switching function. This invention solves the problem in existing technologies where the negative pressure adsorption platform adheres tightly to the printed film during the material changing stage, making it difficult to peel off. It avoids damage to the printing platform 200 and the printed product caused by manual prying and tearing, thus improving printing efficiency and quality.

[0025] Furthermore, the switching assembly 40 also includes a sliding seat 45 slidably disposed on the switching seat 41. The sliding seat 45 has a communication port 451 that is sealed and communicates with the connection end 431 of the connecting air pipe 43. The output end of the driving member is connected to the sliding seat 45. The switching seat 41 is provided with a positive pressure station 413 and a negative pressure station 414 respectively. The sliding seat 45 moves back and forth between the positive pressure station 413 and the negative pressure station 414 under the drive of the driving member. When the driving component drives the sliding seat 45 to move to the positive pressure station 413, the connecting port 451 on the sliding seat 45 is aligned with the positive pressure port 411 and connected. The positive pressure airflow in the positive pressure air pipe 20 passes through the positive pressure port 411, the connecting air pipe 43, the air inlet 421 of the connector 42, and the air outlet 422 of the connector 42 in sequence before entering the air outlet pipe 10. When the driving component drives the sliding seat 45 to move to the negative pressure station 414, the connecting port 451 on the sliding seat 45 is aligned with the negative pressure port 412 and connected. The negative pressure airflow in the negative pressure air pipe 30 passes through the negative pressure port 412, the connecting air pipe 43, the air inlet 421 of the connector 42, and the air outlet 422 of the connector 42 in sequence before entering the air outlet pipe 10.

[0026] By setting up a sliding seat 45 and corresponding positive pressure stations 413 and negative pressure stations 414 on the switching seat 41, the driving component can more accurately switch between positive and negative pressure airflow when driving the sliding seat 45 to move. This improves the stability and reliability of suction-blow switching, reduces the possibility of airflow leakage, and simplifies the operation process. It allows the printing equipment to quickly complete the suction-blow switching function during operation, meeting the needs of printing jobs and improving overall printing quality and production efficiency.

[0027] Furthermore, the driving component includes a driving cylinder 44 fixedly mounted on the switching seat 41, and the power rod of the driving cylinder 44 is fixedly connected to the sliding seat 45 to drive the sliding seat 45 to move back and forth between the positive pressure station 413 and the negative pressure station 414.

[0028] The drive cylinder 44 stably drives the sliding seat 45 to move back and forth between the positive pressure station 413 and the negative pressure station 414. Its power output is smooth and reliable, ensuring that the sliding seat 45 will not jam or shift during movement. This further improves the accuracy of suction and blow switching. At the same time, the drive cylinder 44 has a relatively simple structure, making maintenance easier and reducing the maintenance cost and difficulty of use of the equipment, thus providing a strong guarantee for the long-term stable operation of the printing equipment.

[0029] Furthermore, an annular sealing groove 452 is provided on the side of the sliding seat 45 facing the switching seat 41, the connecting port 451 is located inside the annular sealing groove 452, and an annular sealing ring 453 is provided inside the annular sealing groove 452.

[0030] When the sliding seat 45 moves between the positive pressure station 413 and the negative pressure station 414, the annular sealing ring 453 can fit tightly against the switching seat 41, preventing leakage of positive and negative airflow around the connection port 451, thereby further improving the stability and reliability of suction and blowing switching.

[0031] Furthermore, the switching seat 41 is provided with a guide rail 415, and the sliding seat 45 is provided with a slider 454 that slides in cooperation with the guide rail 415.

[0032] The cooperation between the guide rail 415 and the slider 454 makes the movement of the sliding seat 45 between the positive pressure station 413 and the negative pressure station 414 smoother, reducing component wear and airflow instability caused by uneven sliding. The guide rail 415 provides a clear movement path for the sliding seat 45, while the slider 454 ensures that the sliding seat 45 moves strictly according to this path. The two work together to effectively improve the accuracy and stability of the movement of the sliding seat 45.

[0033] Furthermore, the suction and blowing switching mechanism 100 provided in this embodiment also includes an upper connector 50 fixedly disposed on the bottom side of the printing platform 200, and one end of the air outlet pipe 10 extending to the printing platform 200 is connected to the upper connector 50.

[0034] The upper connector 50 makes the connection between the air outlet pipe 10 and the printing platform 200 more stable and convenient. As an intermediate connecting component, it can better distribute and conduct airflow, ensuring that all parts of the printing platform 200 are evenly subjected to positive or negative pressure airflow, thereby ensuring the stable adhesion and smooth peeling of the printing medium on the printing platform 200.

[0035] Furthermore, the number of air outlets 422, air outlet pipes 10, and upper connectors 50 of connector 42 are all multiple.

[0036] The air outlets 422 of multiple connectors 42 can simultaneously deliver airflow to different air outlet pipes 10 to meet the airflow requirements of different areas of the printing platform 200; the multiple air outlet pipes 10 can more flexibly guide the airflow to various areas of the printing platform 200, so that each area of ​​the printing platform 200 can generate negative pressure adsorption force or positive pressure blowing force, ensuring that the printing medium remains stable throughout the printing process.

[0037] Furthermore, a ball valve 11 is provided on the vent pipe 10 for adjusting the flow rate of the gas inside it.

[0038] Ball valve 11 allows for convenient adjustment of the gas flow through the outlet pipe 10. Operators can flexibly control the positive or negative pressure airflow entering the printing platform 200 according to actual printing needs. When a larger negative pressure is required to stabilize thin printing media, ball valve 11 can be opened wider to increase the negative pressure airflow. Conversely, during the material changing stage, if only a smaller positive pressure airflow is needed to assist in peeling off the printed product, ball valve 11 can be closed to reduce the positive pressure airflow. This enables the printing equipment to better adapt to various complex printing scenarios, further improving printing quality and efficiency.

[0039] Furthermore, the end of the positive pressure pipe 20 away from the positive pressure port 411 is connected to a positive pressure airflow supply device, and the end of the negative pressure pipe 30 away from the negative pressure port 412 is connected to a negative pressure airflow supply device.

[0040] The positive pressure airflow supply equipment can continuously and stably provide positive pressure airflow, ensuring that there is sufficient and stable positive pressure airflow entering the air outlet pipe 10 during the material changing stage when positive pressure blowing is required; the negative pressure airflow supply equipment can ensure that the printing platform 200 is provided with continuous and uniform negative pressure during the printing process, so that the printing medium is always stably attached to the platform.

[0041] In addition, this embodiment also provides a printing device, which includes a body 200, a printing platform 300, a printing mechanism 400, and a suction-blowing switching mechanism 100 as described above.

[0042] Working principle: During continuous printing, the drive cylinder 44 drives the sliding seat 45 to move to the negative pressure station 414. At this time, the connecting port 451 on the sliding seat 45 is aligned and connected with the negative pressure port 412. The negative pressure airflow generated by the negative pressure airflow supply device passes through the negative pressure port 412, the connecting air pipe 43, the air inlet 421 of the connector 42, and the air outlet 422 of the connector 42 in sequence before entering the air outlet pipe 10. Then, it is evenly delivered to each area of ​​the printing platform 200 through the upper connector 50, so that the printing platform 200 generates uniform negative pressure, ensuring that the thin printing medium is stably attached to the printing platform 200 and ensuring printing accuracy.

[0043] When a printing stage is completed and the material changing stage begins, the drive cylinder 44 drives the sliding seat 45 to move to the positive pressure station 413. The connecting port 451 on the sliding seat 45 is aligned with and connected to the positive pressure port 411. The positive pressure airflow generated by the positive pressure airflow supply device passes through the positive pressure port 411, the connecting air pipe 43, the air inlet 421 of the connector 42, and the air outlet 422 of the connector 42 in sequence before entering the air outlet pipe 10. Then, it is blown out from the micro-holes of the printing platform 200, separating the printed film from the platform surface. This solves the problem of difficult peeling during the material changing stage and avoids damage to the printing platform 200 and the printed product caused by manual prying and tearing, thereby improving printing efficiency and printing quality.

[0044] The above is only used to illustrate the technical solution of this utility model and not to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A suctio switch mechanism characterized by comprising: The air outlet pipe (10) for providing air flow to the printing platform (300), the positive pressure air pipe (20) for providing positive pressure air flow, the negative pressure air pipe (30) for providing negative pressure air flow, and the switching assembly (40) for controlling the conduction of the air outlet pipe (10) and the positive pressure air pipe (20) or the negative pressure air pipe (30); The switching assembly (40) includes a switching seat (41), a connecting head (42), a connecting air pipe (43) and a driving member, the switching seat (41) is provided with a positive pressure port (411) communicated with the positive pressure air pipe (20) and a negative pressure port (412) communicated with the negative pressure air pipe (30), the connecting head (42) has an air inlet port (421) and an air outlet port (422) communicated with each other, one end of the air outlet pipe (10) is communicated with the air outlet port (422) of the connecting head (42), and the other end extends to the printing platform (300), one end of the connecting air pipe (43) is communicated with the air inlet port (421) of the connecting head (42), and the other end is a connecting end (431), and the driving member is used for driving the connecting air pipe (43) to move, so that the connecting end (431) of the connecting air pipe (43) is in sealed connection with the positive pressure port (411) or the negative pressure port (412) of the switching seat (41) to realize conduction.

2. The sipping switching mechanism of claim 1, wherein, The switching assembly (40) further includes a sliding seat (45) slidingly arranged on the switching seat (41), the sliding seat (45) is provided with a communication port (451) in sealed communication with the connecting end (431) of the connecting air pipe (43), the output end of the driving member is connected to the sliding seat (45), and the switching seat (41) is correspondingly provided with a positive pressure station (413) and a negative pressure station (414), and the sliding seat (45) moves back and forth between the positive pressure station (413) and the negative pressure station (414) under the driving of the driving member; When the driving member drives the sliding seat (45) to move to the positive pressure station (413), the communication port (451) on the sliding seat (45) is aligned with and conducted with the positive pressure port (411), and the positive pressure air flow in the positive pressure air pipe (20) enters the air outlet pipe (10) in sequence through the positive pressure port (411), the connecting air pipe (43), the air inlet port (421) of the connecting head (42) and the air outlet port (422) of the connecting head (42); When the driving member drives the sliding seat (45) to move to the negative pressure station (414), the communication port (451) on the sliding seat (45) is aligned with and conducted with the negative pressure port (412), and the negative pressure air flow in the negative pressure air pipe (30) enters the air outlet pipe (10) in sequence through the negative pressure port (412), the connecting air pipe (43), the air inlet port (421) of the connecting head (42) and the air outlet port (422) of the connecting head (42).

3. The sipping switching mechanism of claim 2, wherein, The driving member includes a driving air cylinder (44) fixedly arranged on the switching seat (41), and a power rod of the driving air cylinder (44) is fixedly connected to the sliding seat (45) to drive the sliding seat (45) to move back and forth between the positive pressure station (413) and the negative pressure station (414).

4. The sipping switching mechanism of claim 2, wherein, An annular sealing groove (452) is formed on the side of the sliding seat (45) facing the switching seat (41), the communication port (451) is located inside the annular sealing groove (452), and an annular sealing ring (453) is arranged in the annular sealing groove (452).

5. The sipping switching mechanism of claim 2, wherein, A guide rail (415) is arranged on the switching seat (41), and a sliding block (454) that is in sliding cooperation with the guide rail (415) is arranged on the sliding seat (45).

6. The sipping switching mechanism of claim 1, wherein, An upper connector (50) fixed to the bottom side of the printing platform (300) is further included, and one end of the air outlet pipe (10) extending to the printing platform (300) is in communication with the upper connector (50).

7. The sipping switching mechanism of claim 6, wherein, The number of the air outlet ports (422) of the connector (42), the air outlet pipe (10) and the upper connector (50) is multiple.

8. The sipping switching mechanism of claim 1, wherein, A ball valve (11) for adjusting the flow of gas inside the air outlet pipe (10) is arranged on the air outlet pipe (10).

9. The sipping switching mechanism of claim 1, wherein, A positive pressure airflow supply device is in communication with one end of the positive pressure air pipe (20) away from the positive pressure port (411), and a negative pressure airflow supply device is in communication with one end of the negative pressure air pipe (30) away from the negative pressure port (412).

10. A printing device, characterized by, The device comprises a machine body (200), a printing platform (300), a printing mechanism (400) and the suction-blow switching mechanism (100) according to any one of claims 1-9.

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