Blowing structure of laser engraving machine

Abstract

The utility model provides a laser engraving machine blowing structure which comprises a blowing pipe connected with the air outlet end of an air blower through a hose, the blowing pipe is sleeved with a supporting piece used for adjusting the angle of the blowing pipe, a detachable hollow pipe is installed at the end, away from the hose, of the blowing pipe, an expansion rubber sleeve is installed in the hollow pipe, and the expansion rubber sleeve is connected with the supporting piece. A gap exists between the outer surface of the expansion rubber sleeve and the inner wall of the hollow pipe, an air cylinder is installed on the outer surface of the hollow pipe, a piston is slidably installed in the air cylinder, a screw is installed in the middle of one face of the piston, and the end, away from the piston, of the screw extends to the outer side of the air cylinder and is in threaded connection with the air cylinder. And a knob head is mounted at one end, far away from the piston, of the screw rod. The air blower has the following beneficial effect that the flow speed of air flow is adjusted under the condition that the power of the air blower is not changed.

Description

Technical Field

[0001] This utility model relates to an air blowing structure for a laser engraving machine, belonging to the technical field of laser engraving machines. Background Technology

[0002] Laser engraving is a process based on CNC technology, using laser as the processing medium. The physical transformation of the material under laser irradiation—instant melting and vaporization—enables the laser engraving to achieve its processing purpose. However, impurities generated during laser engraving machine operation can interfere with the machine's information acquisition, leading to inaccurate positioning. Therefore, an air blowing pipe that moves with the machine head needs to be installed. This pipe is connected to the blower's outlet via a flexible hose. When the blower is working, airflow flows out of the air blowing pipe to remove impurities. Because the inner diameter of the air blowing pipe is fixed, when removing impurities with strong adhesion, it is necessary to increase the blower's power to increase the airflow velocity through the pipe. This increases energy consumption. Therefore, a laser engraving machine air blowing structure that can adjust the airflow velocity without changing the blower's power is needed. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an air blowing structure for a laser engraving machine to solve the problems mentioned in the background technology. This utility model realizes the adjustment of airflow speed without changing the blower power.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: a blower structure for a laser engraving machine, comprising a blower pipe connected to the air outlet of a blower via a flexible hose, a support member for adjusting the angle of the blower pipe sleeved on the blower pipe, a detachable hollow tube installed at the end of the blower pipe away from the flexible hose, an expansion rubber sleeve installed inside the hollow tube, a gap existing between the outer surface of the expansion rubber sleeve and the inner wall of the hollow tube, an air cylinder installed on the outer surface of the hollow tube, a piston slidably installed inside the air cylinder, a screw installed at the middle position of one side of the piston, the end of the screw away from the piston extending to the outside of the air cylinder and threadedly connected to the air cylinder, and a knob head installed at the end of the screw away from the piston.

[0005] Furthermore, the support includes a sphere, and the sphere is fitted onto the air blowing pipe and fixedly connected to the air blowing pipe. An upper spherical cover and a lower spherical cover are fitted onto the air blowing pipe. The upper spherical cover is fixedly connected to the lower spherical cover by bolts. The sphere is rolled between the upper spherical cover and the lower spherical cover. A screw hole is opened on the outer surface of the upper spherical cover, and a positioning screw for limiting the position of the sphere is threaded into the screw hole.

[0006] Furthermore, a support arm plate is fixedly connected to the outer surface of the lower spherical cover, and two symmetrically arranged fixing holes for inserting bolts are opened on one side of the support arm plate away from the lower spherical cover.

[0007] Furthermore, an upper ring is fixedly connected to the outer edge of the upper spherical cover, and a lower ring is fixedly connected to the outer edge of the lower spherical cover. The upper ring is fixedly connected to the lower ring by bolts.

[0008] Furthermore, an external threaded ring is fixedly connected to one end of the hollow tube near the air blowing pipe, and an internal thread is machined on the side of the air blowing pipe near the hollow tube, with the external threaded ring threadedly connected inside the air blowing pipe.

[0009] Furthermore, a circular opening is provided on the outer surface of the hollow tube, and the open end of the air cylinder is connected and fixed inside the circular opening.

[0010] Furthermore, an internal threaded sleeve is installed at the center of the side of the air cylinder facing away from the hollow tube. The internal threaded sleeve communicates with the air cylinder, and the screw is threadedly connected inside the internal threaded sleeve.

[0011] The beneficial effects of this utility model are:

[0012] 1. By turning the knob, the screw is driven to move the piston inside the air cylinder. The piston moves and compresses the air inside the air cylinder, causing the air to enter the space formed by the expansion rubber sleeve and the hollow tube. At this time, the expansion rubber sleeve expands, thus reducing the space in the central area of ​​the expansion rubber sleeve. When the airflow generated by the blower with a fixed power flows through the narrowed channel in the central area of ​​the expansion rubber sleeve, its flow rate increases. This allows for adjustment of the airflow rate without changing the blower power, which helps to reduce energy consumption.

[0013] 2. Roll the ball fixed on the air tube into the space formed by the upper and lower spherical covers. After loosening the positioning screw, use the air tube to drive the ball to rotate, thereby changing the orientation of the air tube until the orientation of the air tube meets the requirements. Then use the positioning screw to limit the position of the ball, so as to adjust the angle of the air tube as needed. Attached Figure Description

[0014] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0015] Figure 1 This is a schematic diagram of the air blowing structure of a laser engraving machine according to the present invention;

[0016] Figure 2 This is an assembly diagram of the expansion rubber sleeve, air cylinder, and hollow tube in the air blowing structure of a laser engraving machine according to the present invention.

[0017] Figure 3 This is an assembly diagram of the expansion rubber sleeve, piston, screw, air cylinder and hollow tube in the air blowing structure of a laser engraving machine according to the present invention;

[0018] Figure 4 This is a schematic diagram of the assembly of the external threaded ring and the hollow tube in the air blowing structure of a laser engraving machine according to this utility model.

[0019] Figure 5 This is a schematic diagram of the assembly of the screw and piston in the air blowing structure of a laser engraving machine according to the present invention;

[0020] Figure 6 This is a perspective view of the expansion rubber sleeve in the air blowing structure of a laser engraving machine according to the present invention;

[0021] Figure 7 This is a three-dimensional view of the air blowing pipe in the air blowing structure of a laser engraving machine according to the present invention;

[0022] Figure 8 This is a perspective view of the upper spherical cover in the air blowing structure of a laser engraving machine according to the present invention;

[0023] Figure 9 This is a perspective view of the lower spherical cover in the air blowing structure of a laser engraving machine according to the present invention;

[0024] In the diagram: 1-air blowing pipe, 2-sphere, 3-upper ball cover, 4-support arm plate, 5-lower ball cover, 6-hollow tube, 7-air cylinder, 8-screw, 9-knob head, 10-upper ring, 11-positioning screw, 12-external threaded ring, 13-internal threaded sleeve, 14-expansion rubber sleeve, 15-piston, 16-round opening, 17-screw hole, 18-lower ring. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0026] Please see Figure 1 , Figure 8 and Figure 9This utility model provides a technical solution: an air blowing structure for a laser engraving machine, including an air blowing pipe 1 connected to the air outlet of a blower via a flexible hose. A ball 2 is fitted onto the air blowing pipe 1 and fixed thereto. An upper ball cover 3 and a lower ball cover 5 are fitted onto the air blowing pipe 1. An upper ring 10 is fixed to the outer edge of the upper ball cover 3, and a lower ring 18 is fixed to the outer edge of the lower ball cover 5. The upper ring 10 is fixed to the lower ring 18 by bolts, thus assembling the upper ball cover 3 and the lower ball cover 5. The ball 2 is rolled between the upper ball cover 3 and the lower ball cover 5. A support plate 4 is fixed to the outer surface of the lower ball cover 5. Two symmetrically arranged fixing holes for inserting bolts are opened on one side of the support plate 4 away from the lower ball cover 5, so that the bolts can pass through the fixing holes and be installed at a suitable position on the laser engraving machine, thus restricting the position of the lower ball cover 5.

[0027] Please see Figure 1 , Figure 8 and Figure 9 The outer surface of the upper ball cover 3 is provided with a screw hole 17. The screw hole 17 is internally threaded with a positioning screw 11 for limiting the position of the ball 2, so that the ball 2 fixed on the air pipe 1 is rolled in the space formed by the upper ball cover 3 and the lower ball cover 5. After loosening the positioning screw 11, the air pipe 1 drives the ball 2 to rotate, thereby changing the orientation of the air pipe 1 until the orientation of the air pipe 1 meets the requirements. Then, the positioning screw 11 is used to limit the position of the ball 2, so that the angle of the air pipe 1 can be adjusted as needed.

[0028] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 7 A detachable hollow tube 6 is installed at the end of the air tube 1 away from the hose. That is, an external threaded ring 12 is connected and fixed at the end of the hollow tube 6 near the air tube 1. An internal thread is machined on the side of the air tube 1 near the hollow tube 6, so that the external threaded ring 12 is threadedly connected to the air tube 1, thus completing the assembly of the hollow tube 6 and the air tube 1.

[0029] See Figures 1-7An expansion rubber sleeve 14 is installed inside the hollow tube 6. A gap exists between the outer surface of the expansion rubber sleeve 14 and the inner wall of the hollow tube 6. An air cylinder 7 is installed inside a circular opening 16 on the outer surface of the hollow tube 6, with the open end of the air cylinder 7 inside the circular opening 16. A piston 15 is slidably installed inside the air cylinder 7. A screw 8 is installed at the center of one side of the piston 15. The end of the screw 8 away from the piston 15 extends to the outside of the air cylinder 7 and is threadedly connected to it. An internally threaded sleeve 13 is installed at the center of the side of the air cylinder 7 facing away from the hollow tube 6. The internally threaded sleeve 13 communicates with the air cylinder 7, allowing the screw 8 to be threadedly connected within the internally threaded sleeve 13, thus completing the connection between the screw 8 and the air cylinder 7. The screw 8 is connected by a thread, and a knob 9 is installed at the end of the screw 8 away from the piston 15. By turning the knob 9, the screw 8 is driven to move the piston 15 inside the air cylinder 7. The piston 15 moves and compresses the air inside the air cylinder 7, causing the air inside the air cylinder 7 to enter the space formed by the expansion rubber sleeve 14 and the hollow tube 6. At this time, the volume of the expansion rubber sleeve 14 expands, thereby reducing the space in the central area of ​​the expansion rubber sleeve 14. When the airflow generated by the blower with a certain power flows through the reduced channel in the central area of ​​the expansion rubber sleeve 14, its flow rate increases. This allows for adjustment of the airflow rate without changing the blower power, which helps to reduce energy consumption.

[0030] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A laser engraving machine blowing structure, comprising a blowing pipe (1) connected with the air outlet end of a blower through a hose, characterized in that: The blowing pipe (1) is sleeved with a support for adjusting the angle of the blowing pipe (1), a detachable hollow pipe (6) is installed at the end of the blowing pipe (1) away from the hose, an inflatable rubber sleeve (14) is installed in the hollow pipe (6), a gap exists between the outer surface of the inflatable rubber sleeve (14) and the inner wall of the hollow pipe (6), a gas cylinder (7) is installed on the outer surface of the hollow pipe (6), a piston (15) is slidingly installed in the gas cylinder (7), a screw rod (8) is installed at the middle position of one side of the piston (15), the end of the screw rod (8) away from the piston (15) extends to the outside of the gas cylinder (7) and is threadedly connected with the gas cylinder (7), and a knob head (9) is installed at the end of the screw rod (8) away from the piston (15).

2. The air blowing structure of the laser engraver according to claim 1, wherein: The support comprises a ball (2), the blowing pipe (1) is sleeved with the ball (2) which is connected and fixed with the blowing pipe (1), the blowing pipe (1) is sleeved with an upper ball cover (3) and a lower ball cover (5), the upper ball cover (3) is connected and fixed with the lower ball cover (5) through bolts, the ball (2) is rollingly installed between the upper ball cover (3) and the lower ball cover (5), screw holes (17) are formed in the outer surface of the upper ball cover (3), and positioning screws (11) for limiting the position of the ball (2) are threadedly connected in the screw holes (17).

3. The air blowing structure of the laser engraver according to claim 2, wherein: The lower ball cover (5) is connected and fixed with an arm plate (4), two symmetrically arranged fixing holes for inserting bolts are formed in the side of the arm plate (4) away from the lower ball cover (5).

4. The air blowing structure of the laser engraver according to claim 2, wherein: The outer surface edge of the upper ball cover (3) is connected and fixed with an upper ring (10), the outer surface edge of the lower ball cover (5) is connected and fixed with a lower ring (18), and the upper ring (10) is connected and fixed with the lower ring (18) through bolts.

5. The air blowing structure of the laser engraver according to claim 1, wherein: The end of the hollow pipe (6) close to the blowing pipe (1) is connected and fixed with an external thread ring (12), an internal thread is processed on the side of the blowing pipe (1) close to the hollow pipe (6), and the external thread ring (12) is threadedly connected in the blowing pipe (1).

6. The air blowing structure of the laser engraver according to claim 1, wherein: A round opening (16) is formed in the outer surface of the hollow pipe (6), and the open end of the gas cylinder (7) is connected and fixed in the round opening (16).

7. The air blowing structure of the laser engraver according to claim 1, wherein: An internal thread sleeve (13) is installed at the middle position of the side of the gas cylinder (7) away from the hollow pipe (6), the internal thread sleeve (13) is communicated with the gas cylinder (7), and the screw rod (8) is threadedly connected in the internal thread sleeve (13).

Images