Paper jam preventing device of screen printer

Abstract

The utility model relates to the technical field of screen printing machines, and discloses a paper jam prevention device of a screen printing machine, which comprises machine frames and a paper conveying belt, the paper conveying belt is arranged between the machine frames, supporting seats are arranged on two sides of the top of each machine frame, a supporting rod is arranged between the supporting seats, a C-shaped clamp is arranged on the outer wall of the supporting rod, a T-shaped groove is arranged on one side of a connecting rod, and the T-shaped groove is arranged on the other side of the connecting rod. When the infrared sensor is installed, the angle of the connecting rod can be adjusted through the bolt connection of the connecting rod, the position of the infrared sensor can be adjusted through the matching of the T-shaped groove and the T-shaped bolt, and the height of the infrared sensor can be adjusted through the matching of the T-shaped groove and the T-shaped bolt. Meanwhile, through the height adjusting rod and the mounting plate, height adjustment of the infrared sensor can be achieved, the infrared sensor is suitable for detection of paper with different material light transmittances, and missing detection and error detection are reduced.

Description

Technical Field

[0001] This utility model relates to the field of screen printing machine technology, specifically to a screen printing machine anti-paper jam device. Background Technology

[0002] A screen printing machine, also known as a silkscreen printing press, is a device that prints ink onto the surface of various materials using a silkscreen screen. The working principle of a screen printing machine is to use a silkscreen as a printing plate, and rely on the squeegee pressure to transfer ink through the mesh of the silkscreen onto the substrate, thereby achieving the printing of the pattern.

[0003] A Chinese patent (CN102152603B) discloses a fully automatic roll-to-roll screen printing machine, including an automatic roll-out device, an automatic printing device, and an automatic drying device. The automatic printing device has a feeding end, a printing mechanism, and a discharging end. The automatic roll-out device, equipped with a feeding roller, is placed at the feeding end. The roll-to-roll workpiece enters the feeding end through the automatic roll-out device, is printed by the printing mechanism, and exits from the discharging end, being fed into the automatic drying device. This invention can automatically perform a series of steps, including printing, drying, and winding into rolls, on roll-to-roll products such as paper and film, achieving a high level of automation.

[0004] Fully automatic screen printing machines, as precision printing equipment, are widely used in industrial production in fields such as packaging and decoration, and electronic product panels. Their core process uses a UV curing system to achieve instantaneous ink drying, with operating temperatures typically reaching 80-120℃. However, during high-speed continuous operation, paper jams often occur. These jams are often only detected and require manual intervention after 3-5 minutes. During this process, the stuck paper is continuously irradiated by the UV lamps, causing it to heat up and potentially burn, posing a significant safety hazard.

[0005] While existing technologies use infrared detection devices for paper jam warnings, these devices are often fixed in place and difficult to adjust in terms of position and height. For different types of paper, which often have different light transmittance, infrared detection devices with a fixed distance are not suitable for printing detection on different types of paper. Utility Model Content

[0006] The purpose of this invention is to provide a paper jam prevention device for screen printing machines to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a paper jam prevention device for a screen printing machine, comprising: a frame and a paper conveyor belt, wherein the paper conveyor belt is provided between the frames, support seats are provided on both sides of the top of the frame, support rods are provided between the support seats, C-shaped clamps are provided on the outer wall of the support rods, a fixing plate is provided on one side of the outer wall of the C-shaped clamps, a connecting rod is connected to the top of the fixing plate by bolts, a T-shaped groove is provided on one side of the connecting rod, a T-shaped bolt is provided in the T-shaped groove, a height adjustment rod is provided at one end of the T-shaped bolt, a mounting plate is provided on the height adjustment rod, and an infrared sensor is provided at the bottom of the mounting plate.

[0008] Furthermore, multiple support rods are provided, and support rods are provided at the top of both ends of the paper conveyor belt.

[0009] Furthermore, a wheel frame is bolted to the bottom of the fixed plate, and a support wheel is provided between the wheel frames, with the bottom surface of the support wheel in contact with the paper conveyor belt.

[0010] Furthermore, a rod sleeve is provided on one side of the mounting plate, and the rod sleeve and the height adjustment rod are in clearance fit. A locking screw is provided on one side of the rod sleeve, and one end of the locking screw can abut against the outer wall of the height adjustment rod.

[0011] Furthermore, the top of the C-shaped clamp is provided with a screw that abuts against the support rod.

[0012] Furthermore, infrared sensors are installed on the support rods located at both ends of the paper conveyor belt.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This utility model, through the setting of infrared sensors, T-slots and height adjustment rods, realizes the anti-paper jam device of screen printing machines. When the infrared sensor is set above the paper conveyor belt to sense the paper, if no paper is sensed, it sends a signal to the equipment. The microcomputer controller on the equipment controls the audible and visual alarm to issue an alarm in time to remind and handle the situation, thus preventing prolonged paper jams.

[0015] During the installation of the infrared sensor, the angle of the connecting rod can be adjusted by bolting the connecting rod. The position of the infrared sensor can be adjusted by the cooperation of the T-slot and T-bolt, ensuring that the infrared sensor can be used to detect paper of different widths. At the same time, the height of the infrared sensor can be adjusted by the height adjustment rod and the mounting plate, which is suitable for detecting paper with different light transmittance and reducing missed detections and false detections.

[0016] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0017] Figure 1 This is a perspective view of a screen printing machine anti-paper jam device according to the present invention;

[0018] Figure 2 for Figure 1 Enlarged structural diagram at point A in the middle;

[0019] Figure 3 This is a perspective view of another aspect of the anti-paper jam device for a screen printing machine according to the present invention.

[0020] Figure 4 This is a top view of a screen printing machine anti-paper jam device according to the present invention.

[0021] In the diagram: 1. Frame; 2. Paper conveyor belt; 3. Support base; 4. Support rod; 5. C-clamp; 6. Fixing plate; 7. Wheel frame; 8. Support wheel; 9. Bolt; 10. Connecting rod; 11. T-slot; 12. T-bolt; 13. Height adjustment rod; 14. Mounting plate; 15. Infrared sensor. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Please see Figures 1-4 This utility model provides a technical solution: a paper jam prevention device for a screen printing machine, comprising: a frame 1 and a paper conveyor belt 2, with the paper conveyor belt 2 positioned between the frames 1; support seats 3 on both sides of the top of the frame 1; support rods 4 positioned between the support seats 3; and C-shaped clamps 5 on the outer wall of the support rods 4. The inner bottom wall of the C-shaped clamps 5 is machined with V-shaped guide grooves, forming a self-centering fit with the outer circle of the support rods 4. The combination of the support seats 3 and the support rods 4 provides a stable mounting platform for subsequent paper jam prevention components, ensuring that these components can operate accurately and reliably.

[0024] A fixing plate 6 is provided on one side of the outer wall of the C-clamp 5. A connecting rod 10 is connected to the top of the fixing plate 6 by bolts 9. A T-slot 11 is opened on one side of the connecting rod 10, and a T-bolt 12 is installed in the T-slot 11. A height adjustment rod 13 is provided at one end of the T-bolt 12. This design allows the position of the connecting rod and its subsequent components to be adjusted by adjusting the position of the T-bolt in the T-slot, thus enabling precise adjustment. A mounting plate 14 is provided on the height adjustment rod 13, and an infrared sensor 15 is provided at the bottom of the mounting plate 14. The height adjustment rod allows for further adjustment of the height of the mounting plate and its components to accommodate different thicknesses or types of paper, enhancing the adaptability and flexibility of the device.

[0025] Multiple support rods 4 are provided, with support rods 4 located at the top of both ends of the paper conveyor belt 2. The design of multiple support rods enhances the stability and support capacity of the device, especially at both ends of the paper conveyor belt, where these support rods ensure the smoothness and accuracy of the paper during the conveying process.

[0026] The bottom of the fixed plate 6 is connected to a wheel frame 7 by bolts 9. A support wheel 8 is provided between the wheel frames 7, and the bottom surface of the support wheel 8 contacts the paper conveyor belt 2. The support wheel 8 provides additional support and helps to maintain the smooth operation of the paper conveyor belt.

[0027] A sleeve is provided on one side of the mounting plate 14. The sleeve and the height adjustment rod 13 are fitted with a clearance fit. A locking screw is provided on one side of the sleeve, and one end of the locking screw can abut against the outer wall of the height adjustment rod 13. After the position of the height adjustment rod is precisely adjusted on the mounting plate 14, it is fixed by the locking screw, ensuring the accuracy and stability of the adjustment.

[0028] The top of the C-clamp 5 has a screw that abuts against the support rod 4. The C-clamp can be firmly fixed to the support rod.

[0029] Infrared sensors 15 are installed on the support rods 4 at both ends of the paper conveyor belt 2. Installing infrared sensors 15 at both ends of the paper conveyor belt allows for comprehensive monitoring of the paper conveying status, timely detection and handling of paper jams, and increases the error tolerance rate.

[0030] When using the anti-paper jam device on a screen printing machine, an infrared sensor 15 is installed above the paper conveyor belt to detect the paper. If no paper is detected, a signal is sent to the equipment, and the microcomputer controller on the equipment controls the sound and light alarm to issue an alarm in time to remind the user to handle the situation and prevent prolonged paper jams.

[0031] When installing the infrared sensor 5, the angle of the connecting rod 10 can be adjusted by connecting it with the bolt 9. The position of the infrared sensor 15 can be adjusted by the cooperation of the T-slot 11 and the T-bolt 12, ensuring that the infrared sensor 15 can be used to detect paper of different widths. At the same time, the height of the infrared sensor 15 can be adjusted by the height adjustment rod 13 and the mounting plate 14, which is suitable for detecting paper with different light transmittance and reducing missed detections and false detections.

[0032] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

Claims

1. A silk screening press anti-jam device, comprising: The rack (1) and the paper conveying belt (2) are characterized in that: the rack (1) is provided with the paper conveying belt (2), the rack (1) is provided with the support seat (3) on both sides of the top, the support seat (3) is provided with the support rod (4), the support rod (4) is provided with the C-shaped clamp (5) on the outer wall, the C-shaped clamp (5) is provided with the fixed plate (6) on one side of the outer wall, the fixed plate (6) is connected with the connecting rod (10) through the bolt (9) on the top, the connecting rod (10) is provided with the T-shaped slot (11) on one side, the T-shaped slot (11) is provided with the T-shaped bolt (12), one end of the T-shaped bolt (12) is provided with the height adjusting rod (13), the height adjusting rod (13) is provided with the mounting plate (14), and the infrared sensor (15) is arranged on the bottom of the mounting plate (14).

2. A jam-preventing device for a screen printing machine according to claim 1, characterized in that: The support rod (4) is provided with a plurality of support rods (4), and the paper conveying belt (2) is provided with the support rod (4) on the top of both ends.

3. A jam-preventing device for a screen printing machine according to claim 1, characterized in that: The fixed plate (6) is connected with the wheel frame (7) through the bolt (9) on the bottom, the wheel frame (7) is provided with the supporting wheel (8) between them, and the bottom surface of the supporting wheel (8) is in contact with the paper conveying belt (2).

4. A jam-preventing device for a screen printing machine according to claim 1, characterized in that: One side of the mounting plate (14) is provided with a rod sleeve, the rod sleeve and the height adjusting rod (13) are gap-fitted, one side of the rod sleeve is provided with a locking screw, and one end of the locking screw can abut the outer wall of the height adjusting rod (13).

5. A jam-preventing device for a screen printing machine according to claim 1, characterized in that: The C-shaped clamp (5) is provided with a screw abutting the support rod (4) on the top.

6. A jam-preventing device for a screen printing machine according to claim 2, characterized in that: The infrared sensor (15) is arranged on the support rod (4) located at both ends of the paper conveying belt (2).

Images