Printing equipment nozzle anti-collision device

Abstract

The present invention discloses an anti-collision device for a nozzle of a printing device, which specifically includes an anti-collision fixing angle piece, an anti-collision support, a pendulum fixing seat, a pendulum, a photoelectric switch, an anti-collision switch baffle, a pendulum rotating shaft and a reset spring. During the operation of the printing device, when the nozzle of the printing device collides with an obstacle, the position of the pendulum shifts, and the movement of the anti-collision switch baffle on the pendulum triggers the photoelectric switch to send a stop signal to cause the device to stop, so as to prevent the nozzle of the printing device from touching the obstacle, and can effectively prevent the nozzle of the printing device from being damaged due to the unevenness of the printing medium during the printing process. The anti-collision device in the present invention has a simple structure, a balanced center of gravity of the pendulum, high stability, high sensitivity, is suitable for low-speed and medium-high-speed printing, and can effectively prevent the nozzle of the printing device from being damaged due to the unevenness of the printing medium during the printing process.

Description

Technical Field

[0001] The invention relates to the technical field of printing, and in particular to an anti-collision device for a nozzle of a printing device. Background Art

[0002] An inkjet printer places the substrate on a printing surface and prints ink on the substrate through a nozzle. The distance between the nozzle and the substrate is very close. If the substrate is wrinkled or has protrusions, it is easy to hit the nozzle during the printing process, causing damage to the nozzle or even scrapping.

[0003] CN205498342 discloses an anti-collision nozzle for an inkjet printer, the principle of which is to install a contact switch on the side of the nozzle, the contact switch measures the distance between several test points on the printing platform, and determines the safe position of the nozzle according to the maximum value of the measured distance. It uses point measurement and cannot measure whether the entire plane is safe.

[0004] CN204278759 discloses a universal printer and UV printer anti-collision alignment device, on which an infrared emission sensor is installed. If the sensor detects a protrusion, an alarm will sound, causing the machine to shut down. However, the infrared emission sensor is expensive, and it is ineffective for products that cannot be shielded. In addition, the infrared sensor has high requirements for air quality, and dust in the air can easily cause false alarms.

[0005] Therefore, there is an urgent need for a printing equipment nozzle anti-collision device with simple structure, low cost and high sensitivity. Summary of the invention

[0006] The purpose of the present invention is to provide a printing equipment nozzle anti-collision device, which has a simple structure, low cost, small space occupation and high stability.

[0007] The printing device nozzle anti-collision device of the present invention has a pendulum position shifted when the printing device nozzle collides with an obstacle during the operation of the printing device, and the anti-collision switch baffle on the pendulum moves to trigger the photoelectric switch to send a stop signal to cause the device to stop, so as to prevent the printing device nozzle from touching the obstacle. This can effectively prevent damage to the printing device nozzle caused by the unevenness of the printing medium during the printing process.

[0008] In order to achieve the above object, the technical solution of the present invention is as follows:

[0009] A printing device nozzle anti-collision device, the printing device nozzle anti-collision device is composed of an anti-collision fixing angle piece, an anti-collision support, a pendulum fixing seat, a pendulum, a photoelectric switch, an anti-collision switch baffle, a pendulum shaft and a reset spring. The pendulum shaft is located in the center of the pendulum, the weight of the upper and lower parts of the pendulum shaft is completely the same, and the center of gravity of the pendulum is in the center.

[0010] The anti-collision fixing angle piece is fixed on the printing device, the pendulum fixing seat is connected to the nozzle of the printing device, the pendulum is connected to the anti-collision support through the pendulum fixing seat, and the reset spring is connected to the pendulum and the anti-collision support.

[0011] The anti-collision switch baffle is L-shaped, fixed on the pendulum, and located between the pendulum and the photoelectric switch.

[0012] The photoelectric switch is a U-shaped groove structure, which is connected to the power supply of the printing device and is connected to the anti-collision fixed angle piece and the anti-collision support. During the operation of the printing device, when the printing device nozzle collides with an obstacle, the pendulum position shifts, and the anti-collision switch baffle on the pendulum moves to trigger the photoelectric switch to send a stop signal to cause the device to stop, thereby preventing the printing device nozzle from touching the obstacle.

[0013] There are two anti-collision devices, which are respectively located on both sides of the nozzle of the printing device.

[0014] When the pendulum is in the initial position, the pendulum is perpendicular to the printing surface.

[0015] When the pendulum is in the initial position, the distance between the bottom edge of the pendulum and the printing surface is 0.1-1.0 mm lower than the distance between the nozzle of the printing device and the printing surface.

[0016] The maximum offset distance of the pendulum is less than the distance between the pendulum and the nozzle of the printing device.

[0017] The width of the pendulum is greater than the width of the nozzle of the printing device.

[0018] The pendulum is a rectangular parallelepiped, and may be a solid structure or a hollow structure.

[0019] Preferably, the pendulum is a hollow structure.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] 1) The printing equipment nozzle anti-collision device of the present invention has a simple structure, low cost, small space occupation and high stability;

[0022] 2) The pendulum of the present invention adopts a balanced structure with equal mass at the top and bottom, which can ensure that there will be no deviation in the upper and lower parts during normal movement. Once a foreign object appears, even a very weak force will break the balance and cause the pendulum to deviate and rotate;

[0023] 3) The anti-collision device of the present invention has high detection sensitivity and is not only suitable for medium and low speed printing, but also for high speed printing. It can effectively prevent damage to the nozzle of the printing device caused by the unevenness of the printing medium during the printing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1It is a schematic diagram of a print head anti-collision device of the present invention;

[0025] Figure 2 is a schematic diagram of a printing device of the present invention;

[0026] Figure 3 It is a schematic diagram of a pendulum structure of the present invention;

[0027] Among them: 1—anti-collision fixing angle piece; 2—anti-collision support; 3—pendulum fixing seat; 4—pendulum; 5—photoelectric switch; 6—anti-collision switch baffle; 7—pendulum shaft; 8—reset spring; 100—anti-collision device; 200—printing equipment nozzle. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0029] A printing equipment nozzle anti-collision device, such as Figure 1 and Figure 2 As shown, the printing device nozzle anti-collision device 100 is composed of an anti-collision fixing angle piece 1, an anti-collision support 2, a pendulum fixing seat 3, a pendulum 4, a photoelectric switch 5, an anti-collision switch baffle 6, a pendulum shaft 7 and a reset spring 8. The anti-collision device 100 is distributed on both sides of the printing device nozzle 200.

[0030] The anti-collision fixing angle piece 1 is fixed on the printing device, the pendulum fixing seat 3 is connected to the printing device nozzle 200, the pendulum 4 is connected to the anti-collision support 2 through the pendulum fixing seat 3, and the reset spring 8 is connected to the pendulum 4 and the anti-collision support 2.

[0031] The anti-collision switch baffle 6 is L-shaped, fixed on the pendulum 4, and located between the pendulum 4 and the photoelectric switch 5.

[0032] The photoelectric switch 5 is a U-shaped groove structure, connected to the power supply of the printing device, and connected to the anti-collision fixing angle piece 1 and the anti-collision support 2. During the operation of the printing device, when the printing device nozzle 200 collides with an obstacle, the pendulum shaft 7 rotates, the position of the pendulum 4 shifts, and the anti-collision switch baffle 6 on the pendulum 4 moves to trigger the photoelectric switch 5 to send a stop signal to cause the device to stop, so as to prevent the printing device nozzle 200 from touching the obstacle. When starting again, the reset spring 8 moves the anti-collision switch baffle 6 away and resets it, and the pendulum 4 returns to a position perpendicular to the printing surface.

[0033] Figure 3 It is a pendulum structure of the present invention. The pendulum 4 is a rectangular parallelepiped. The upper and lower parts of the pendulum shaft 7 are completely the same in shape and weight. In order to save materials and reduce costs, the upper and lower parts of the pendulum 4 are hollow rectangular parallelepipeds.

Claims

1. A printing equipment nozzle anti-collision device, characterized in that: The printing device nozzle anti-collision device (100) comprises an anti-collision fixing angle piece (1), an anti-collision support (2), a pendulum fixing seat (3), a pendulum (4), a photoelectric switch (5), an anti-collision switch baffle (6), a pendulum rotating shaft (7) and a reset spring (8); the pendulum rotating shaft (7) is located at the center of the pendulum (4), the upper and lower parts of the pendulum rotating shaft (7) have the same weight, and the center of gravity of the pendulum (4) is at the center; the anti-collision fixing angle piece (1) is fixed on the printing device, the pendulum fixing seat (3) is connected to the printing device nozzle (200), the pendulum (4) is connected to the anti-collision support (2) through the pendulum fixing seat (3), and the reset spring (8) is connected to the pendulum (4) and the anti-collision support (2); The anti-collision switch baffle (6) is L-shaped, fixed on the pendulum (4), and located between the pendulum (4) and the photoelectric switch (5); the photoelectric switch (5) is a U-shaped groove structure; when the pendulum (4) is in the initial position, the pendulum (4) is perpendicular to the printing surface; During the operation of the printing device, when the nozzle (200) of the printing device collides with an obstacle, the pendulum shaft (7) rotates, the position of the pendulum (4) is offset, and the anti-collision switch baffle (6) on the pendulum (4) moves to trigger the photoelectric switch (5) to send a stop signal to cause the device to stop, thereby preventing the nozzle (200) of the printing device from touching the obstacle; when starting again, the reset spring (8) moves the anti-collision switch baffle (6) away and resets it, and the pendulum (4) returns to a position perpendicular to the printing surface.

2. The printing head anti-collision device according to claim 1, characterized in that: There are two printing equipment nozzle anti-collision devices (100), which are respectively located on two sides of the printing equipment nozzle (200).

3. The printing head anti-collision device according to claim 1, characterized in that: When the pendulum (4) is in the initial position, the distance between the bottom edge of the pendulum (4) and the printing surface is 0.1 to 1.0 mm lower than the distance between the nozzle (200) of the printing device and the printing surface.

4. The printing head anti-collision device according to claim 1, characterized in that: The maximum offset distance of the pendulum (4) is less than the distance between the pendulum (4) and the nozzle (200) of the printing device; and the width of the pendulum (4) is greater than the width of the nozzle (200) of the printing device.

5. The printing head anti-collision device according to claim 1, characterized in that: The pendulum (4) is a rectangular parallelepiped.

6. The printing equipment nozzle anti-collision device according to claim 1, characterized in that: The pendulum (4) is a solid structure or a hollow structure.

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