Five-way ventilation type rotary joint

Abstract

The utility model provides a five-way ventilation type rotary joint, which relates to the technical field of pneumatic chucks of laser pipe cutting machines and comprises a fixed outer sleeve, a first air inlet, a second air inlet, a third air inlet, a fourth air inlet and a fifth air inlet are respectively arranged on the outer side of the fixed outer sleeve, and a rotary shaft core is arranged in the fixed outer sleeve. An annular groove is formed between the rotating shaft core and the fixed outer sleeve and connected with a first air inlet, a second air inlet, a third air inlet, a fourth air inlet and a fifth air inlet. According to the utility model, the rotating shaft core is rotationally connected in the fixed outer sleeve, the annular groove is formed between the rotating shaft core and the fixed outer sleeve, and meanwhile, five air inlets in the outer side of the fixed outer sleeve are inserted into the annular groove, so that air enters the corresponding air path channels from the air inlets and is connected with the air pipe joints through the air outlets in the tail ends of the air path channels; through the design, the rotating shaft core synchronously rotates along with the chuck rotating body.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic chucks for laser tube cutting machines, in particular to a five-way ventilated rotary joint. Background Art

[0002] The pneumatic chuck of the laser tube cutting machine refers to the key technology used to clamp the tube in the laser tube cutting machine. In the laser tube cutting machine, the chuck plays an important role in fixing and clamping the tube, which affects the cutting accuracy and stability. With the development of laser tube cutting technology, the chuck technology is also constantly innovating and improving.

[0003] In the prior art, the pneumatic chuck commonly used in laser tube cutting machines requires an external air source for air supply, but the air pipe is prone to entanglement during rotation. In addition, in order to ensure the stability of the cylinder drive, each cylinder requires an independent gas channel. Therefore, a dedicated ventilated rotary joint is needed to solve these problems. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings existing in the prior art. The pneumatic chuck of the laser tube cutting machine requires an external air source for air supply, but the problem of air pipe entanglement often occurs during rotation. In addition, the cylinders inside many pneumatic chucks lack independent air channels, which affects the stability of the cylinder output.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a five-way ventilation rotary joint, comprising a fixed outer sleeve, the outer side of the fixed outer sleeve is respectively provided with a first air inlet, a second air inlet, a third air inlet, a fourth air inlet and a fifth air inlet, a rotating shaft core is provided inside the fixed outer sleeve, an annular groove is provided between the rotating shaft core and the fixed outer sleeve, the annular groove is respectively connected to the first air inlet, the second air inlet, the third air inlet, the fourth air inlet and the fifth air inlet, and air holes are correspondingly opened in the annular groove and the rotating shaft core near the five air inlets, the five air holes are respectively connected to an air channel, and the five air channels are respectively provided with an air outlet hole at one end away from the air hole, the air outlet hole is arranged on the outer side of the rotating shaft core, and the end is respectively connected to a trachea joint.

[0006] Optionally, the first air inlet, the second air inlet, the third air inlet, the fourth air inlet and the fifth air inlet are slidably connected in the annular groove.

[0007] Optionally, a bearing is provided inside the fixed outer sleeve near both ends of the rotating shaft core, and the rotating shaft core is rotatably connected in the bearing.

[0008] Optionally, sealing rings are provided around both sides of the annular groove.

[0009] Optionally, the annular groove is composed of a plurality of parallel annular grooves that do not interfere with each other, and fills the cavity between the fixed outer sleeve and the annular groove.

[0010] Optionally, an end cap is provided on the end of the fixed outer sleeve away from the trachea connector.

[0011] Optionally, a connecting plate is provided at one end of the rotating shaft core close to the trachea joint.

[0012] Compared with the prior art, the advantages and positive effects of the utility model are:

[0013] In the utility model, the rotating shaft core is rotatably connected in the fixed outer sleeve, and an annular groove is provided between the two. At the same time, five air inlets on the outside of the fixed outer sleeve are inserted into the annular groove, and the gas enters the corresponding air path channel from these air inlets, and is connected to the air pipe joint through the air outlet hole at the end of the air path channel. This design allows the rotating shaft core to rotate synchronously with the chuck rotating body, and will not affect the gas entering the annular groove, air path holes, air path channel, air outlet hole and air pipe joint from the five air inlets, and finally connected to the cylinder inside the chuck rotating body through five independent air pipe joints and air pipes, so that the air pipe joint on the rotating shaft core will rotate together with the cylinder and the chuck rotating body, avoiding the problem of air pipe entanglement during rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A three-dimensional diagram of a five-way ventilated rotary joint provided by the utility model;

[0015] Figure 2 A schematic cross-sectional structure diagram of a five-way ventilation rotary joint provided by the utility model;

[0016] Figure 3 A sectional stereoscopic view of a fixed outer sleeve structure of a five-way ventilated rotary joint provided by the utility model;

[0017] Figure 4 The utility model provides a five-way ventilation rotary joint of the rotary shaft core structure of the cross-sectional perspective view.

[0018] Legend:

[0019] 1. Fixed outer sleeve; 2. End cover; 3. Connecting plate; 4. First air inlet; 5. Second air inlet; 6. Third air inlet; 7. Fourth air inlet; 8. Fifth air inlet; 9. Bearing; 10. Annular groove; 11. Sealing ring; 12. Rotating shaft core; 13. Air path hole; 14. Air path passage; 15. Air outlet; 16. Air pipe joint. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Example

[0022] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the utility model provides a technical solution: a five-way ventilated rotary joint, comprising a fixed outer sleeve 1, the outer side of the fixed outer sleeve 1 is respectively provided with a first air inlet 4, a second air inlet 5, a third air inlet 6, a fourth air inlet 7 and a fifth air inlet 8, a rotating shaft core 12 is provided inside the fixed outer sleeve 1, and an annular groove 10 is provided between the rotating shaft core 12 and the fixed outer sleeve 1, and the annular groove 10 is respectively connected to the first air inlet 4, the second air inlet 5, the third air inlet 6, the fourth air inlet 7 and the fifth air inlet 8 There are five air inlets 8, and the annular groove 10 and the rotating shaft core 12 are respectively provided with air holes 13 near the five air inlets, and the five air holes 13 are respectively connected to an air channel 14. The five air channels 14 are respectively provided with air outlets 15 at one end away from the air holes 13. The air outlets 15 are arranged on the outside of the rotating shaft core 12, and the ends are respectively connected to an air pipe joint 16. The first air inlet 4, the second air inlet 5, the third air inlet 6, the fourth air inlet 7 and the fifth air inlet 8 are slidably connected in the annular groove 10.

[0023] In the present embodiment, the rotating shaft core 12 is rotatably connected in the fixed outer sleeve 1, and an annular groove 10 is provided between the two. At the same time, five air inlets on the outside of the fixed outer sleeve 1 are inserted into the annular groove 10, and the gas enters the corresponding air path channel 14 from these air inlets, and is connected to the air pipe joint 16 through the air outlet hole 15 at the end of the air path channel 14. This design allows the rotating shaft core 12 to rotate synchronously with the chuck rotating body, and will not affect the gas entering the annular groove 10, air path hole 13, air path channel 14, air outlet hole 15 and air pipe joint 16 from the five air inlets, and finally connected to the cylinder inside the chuck rotating body through five independent air pipe joints 16 and the air pipe, so that the air pipe joint 16 on the rotating shaft core 12 will rotate together with the cylinder and the chuck rotating body, avoiding the problem of entanglement of the air pipe during rotation.

[0024] A bearing 9 is provided inside the fixed outer sleeve 1 near the head and tail ends of the rotating shaft core 12. The rotating shaft core 12 is rotatably connected in the bearing 9. Sealing rings 11 are surrounded on both sides of the annular groove 10. The annular groove 10 is composed of a plurality of parallel and non-interfering annular grooves, and fills the cavity between the fixed outer sleeve 1 and the annular groove 10.

[0025] In this embodiment, the bearing 9 can reduce the friction of the rotating shaft core 12 rotating inside the fixed outer sleeve 1, thereby reducing the wear generated during rotation. Each independent and non-interfering annular groove is isolated by a sealing ring 11, and the sealing ring 11 can prevent the gas from escaping into other annular grooves connected to the air inlet, thereby achieving a good sealing effect.

[0026] An end cap 2 is mounted on the end of the fixed outer sleeve 1 away from the trachea connector 16 , and a connecting plate 3 is mounted on the end of the rotating shaft core 12 close to the trachea connector 16 .

[0027] In this embodiment, the end cover 2 is fixedly connected to the anti-rotation member, so that the fixed outer sleeve 1 can be fixed, and the rotating shaft core 12 is fixedly connected to the chuck rotating body through the connecting plate 3, so that it can rotate with the chuck rotating body.

[0028] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A five-way ventilated rotary joint, comprising a fixed outer sleeve (1), characterized in that: The fixed outer sleeve (1) is provided with a first air inlet (4), a second air inlet (5), a third air inlet (6), a fourth air inlet (7) and a fifth air inlet (8) on the outside thereof, and a rotating shaft core (12) is provided inside the fixed outer sleeve (1). An annular groove (10) is provided between the rotating shaft core (12) and the fixed outer sleeve (1), and the annular groove (10) is connected to the first air inlet (4), the second air inlet (5), the third air inlet (6), the fourth air inlet (7) and the fifth air inlet (8) respectively. Four air inlets (7) and a fifth air inlet (8), and the annular groove (10) and the rotating shaft core (12) are each provided with air path holes (13) near the five air inlets, the five air path holes (13) are respectively connected to an air path channel (14), and the five air path channels (14) are each provided with an air outlet hole (15) at one end away from the air path hole (13), the air outlet hole (15) is arranged on the outside of the rotating shaft core (12), and the end thereof is respectively connected to an air pipe joint (16).

2. A five-way ventilated rotary joint according to claim 1, characterized in that: The first air inlet (4), the second air inlet (5), the third air inlet (6), the fourth air inlet (7) and the fifth air inlet (8) are slidably connected in the annular groove (10).

3. A five-way ventilated rotary joint according to claim 1, characterized in that: A bearing (9) is provided inside the fixed outer sleeve (1) at both ends close to the rotating shaft core (12), and the rotating shaft core (12) is rotatably connected in the bearing (9).

4. A five-way ventilated rotary joint according to claim 1, characterized in that: The annular groove (10) is surrounded by sealing rings (11) on both sides.

5. A five-way ventilated rotary joint according to claim 1, characterized in that: The annular groove (10) is composed of a plurality of parallel annular grooves that do not interfere with each other, and fills the cavity between the fixed outer sleeve (1) and the annular groove (10).

6. A five-way ventilated rotary joint according to claim 1, characterized in that: An end cap (2) is provided at one end of the fixed outer sleeve (1) away from the air pipe joint (16).

7. A five-way ventilated rotary joint according to claim 1, characterized in that: A connecting plate (3) is provided at one end of the rotating shaft core (12) close to the air pipe joint (16).

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