Laser cutting gas valve

Abstract

The present invention discloses a laser cutting gas valve, comprising: a valve body, a valve core, and a driving device, wherein a first gas outlet is arranged on one side of the valve body, the valve body is provided with a plurality of first gas inlets, the first gas inlets are arranged along the circumference of the valve body, the first gas outlet is connected to a gas outlet pipe, the gas outlet pipe is connected to a light outlet pipe, the light outlet pipe extends vertically, a lens is arranged inside the light outlet pipe, a light outlet is arranged at the lower end of the light outlet pipe, the light outlet pipe is provided with a second gas inlet, the valve core is slidably connected in the valve body, the valve core and the valve body are rotatably connected, the valve core is provided with an airway, one end of the airway is connected to the first gas outlet, and the other end of the airway is used to be connected to one of the first gas inlets; the driving device is connected to the valve core, the driving device is used to drive the valve core to move along the axial direction of the valve body, and the driving device is also used to drive the valve core to rotate in the valve body. Compared with the prior art, the laser cutting gas valve provided by the present invention can quickly replace the auxiliary gas.

Description

Technical Field

[0001] The invention relates to the technical field of laser cutting, and in particular to a laser cutting gas valve. Background Art

[0002] When cutting machines use lasers to cut plates, they often require auxiliary gas to assist in cutting. The auxiliary gas is generally air or oxygen. In the prior art, it is very troublesome to replace the auxiliary gas during laser cutting, and the existing gas valve does not have the function of replacing the auxiliary gas. Summary of the invention

[0003] In order to solve the above-mentioned shortcomings of the prior art, the present invention provides a laser cutting gas valve.

[0004] To achieve the above object, the present invention adopts the following technical solution:

[0005] A laser cutting air valve comprises: a valve body, a valve core, and a driving device. A first air outlet is arranged on one side of the valve body, and the valve body is provided with a plurality of first air inlets, the first air inlets are arranged along the circumference of the valve body, the first air outlet is connected to an air outlet pipe, the air outlet pipe is connected to a light outlet pipe, the light outlet pipe extends vertically, a lens is arranged in the light outlet pipe, a light outlet is arranged at the lower end of the light outlet pipe, the light outlet pipe is provided with a second air inlet, the second air inlet is connected to the air outlet pipe, and the second air inlet is arranged below the lens; the valve core is slidably connected in the valve body, the valve core and the valve body are rotatably connected, the valve core is provided with an airway, one end of the airway is connected to the first air outlet, and the other end of the airway is used to be connected to one of the first air inlets; the driving device is connected to the valve core, the driving device is used to drive the valve core to move along the axial direction of the valve body, and the driving device is also used to drive the valve core to rotate in the valve body.

[0006] Furthermore, the number of the first air inlets is two, and the first air inlets include an oxygen inlet and an air inlet, the air inlet is connected to an air compressor, and the oxygen inlet is connected to an oxygen cylinder.

[0007] Furthermore, the driving device includes a rack, one end of the rack is rotatably connected to an end of the valve core away from the first air outlet, a support plate is provided at an end of the valve body away from the first air outlet, the rack passes through the support plate and is slidably connected to the support plate, the support plate is provided with a gear, the gear is connected to a motor, the rack and the gear are meshed, the rack is provided with a rotating groove, the extension direction of the rotating groove is the same as the extension direction of the rack, a rotating shaft is rotatably connected in the rotating groove, the rotating shaft and the valve core are fixedly connected, a servo motor is provided at the end of the rack away from the valve core, the servo motor includes a main body and an output shaft, the main body and the rack are fixedly connected, and the output shaft is connected to the rotating shaft.

[0008] Furthermore, the light output tube includes an output tube, which has a guide section extending downward, a sliding tube extending vertically slidably connected in the guide section, a fixed tube extending vertically is provided at the lower end of the sliding tube, the fixed tube and the guide section are fixedly connected by a connecting piece, the sliding tube and the fixed tube are abutted, a first limiting groove is provided at the lower end of the sliding tube, the first limiting groove is provided along the circumference of the sliding tube, a second limiting groove is provided at the upper end of the fixed tube, the second limiting groove is provided along the circumference of the fixed tube, an accommodating space is formed between the first limiting groove and the second limiting groove, the edge of the lens is provided in the accommodating space and is rotatably connected to the accommodating space, a plurality of blades are fixedly connected to the lower side of the lens, the blades are arranged in sequence along the edge of the lens, and the blades extend radially along the lens, the fixed tube is provided with a rotating hole, the rotating hole The inner rotation is connected with a rotating block, and the second air inlet is arranged on the rotating block. An air nozzle is arranged on the side of the rotating block away from the air outlet pipe, and the air nozzle includes an input end and an output end, and the input end is connected with the second air inlet. From the input end to the output end, the air nozzle gradually moves away from the rotating block and gradually tilts downward; when the lens needs to be cleaned, the rotating block is rotated so that the output end of the air nozzle tilts upward, and under the action of the driving device, the air inlet is connected with the first air outlet through the air duct, the air compressor runs and delivers compressed air to the air inlet, and the compressed air moves to the lens through the air nozzle and cleans the dust on the lower side of the lens, and the output end of the air nozzle faces the blades on the side of the lens close to the rotating block. Under the action of the compressed air, the blades rotate, and the blades drive the lens to rotate, and the lower side of the lens is cleaned.

[0009] Furthermore, a ball bearing for reducing the rotational resistance of the lens is arranged in the accommodating space.

[0010] Furthermore, the sliding tube is threadedly connected with a fixing bolt, and the fixing bolt abuts against the sliding tube.

[0011] Compared with the prior art, the laser cutting gas valve provided by the present invention can quickly replace the auxiliary gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A schematic diagram of an embodiment of the present application;

[0013] Figure 2 A schematic diagram of the airway and oxygen cylinder being connected in an embodiment of the present application;

[0014] Figure 3 A schematic diagram of the air duct and the air compressor being connected in an embodiment of the present application;

[0015] Figure 4 A bottom view of a lens according to an embodiment of the present application;

[0016] Figure 5 For the embodiments of this application Figure 1 A magnified image of point A;

[0017] Figure 6 It is a schematic diagram of lens rotation according to an embodiment of the present application.

[0018] In the figure: valve body 11, first air outlet 111, air outlet pipe 1111, light outlet pipe 1111a, lens 1111b, light outlet 1111c, second air inlet 1111d, output pipe 1111e, guide section 1111f, sliding pipe 1111g, connecting piece 1111h, first limiting groove 1111j, second limiting groove 1111k, accommodating space 1111m, blade 1111n, rotating hole 1111p, rotating block 1111q, ball 1111r, fixing bolt 1111s, air nozzle 1111t, first air inlet 112, air compressor 1121, oxygen cylinder 1122, support plate 113, gear 1131, valve core 12, air duct 121, driving device 13, rack 131, rotating groove 1311, rotating shaft 1311a, servo motor 1312. DETAILED DESCRIPTION

[0019] The technical solution of the present invention is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0020] See also Figures 1 to 6 A laser cutting gas valve comprises a valve body 11, a valve core 12 and a driving device 13: a first air outlet 111 is arranged on one side of the valve body 11, the valve body 11 is provided with a plurality of first air inlets 112, the first air inlets 112 are arranged along the circumference of the valve body 11, the first air outlet 111 is connected with an air outlet pipe 1111, the air outlet pipe 1111 is connected with a light outlet pipe 1111a, the light outlet pipe 1111a extends vertically, a lens 1111b is arranged in the light outlet pipe 1111a, a light outlet 1111c is arranged at the lower end of the light outlet pipe 1111a, and the light outlet pipe 1111a is provided with a second air inlet 1111 d. The second air inlet 1111d is connected to the air outlet pipe 1111, and the second air inlet 1111d is arranged below the lens 1111b; the valve core 12 is slidably connected in the valve body 11, and the valve core 12 and the valve body 11 are rotatably connected. The valve core 12 is provided with an air channel 121, one end of the air channel 121 is connected to the first air outlet 111, and the other end of the air channel 121 is used to be connected to one of the first air inlets 112; the driving device 13 is connected to the valve core 12, and the driving device 13 is used to drive the valve core 12 to move along the axial direction of the valve body 11, and the driving device 13 is also used to drive the valve core 12 to rotate in the valve body 11.

[0021] There are two first air inlets 112 , and the first air inlets 112 include an oxygen inlet and an air inlet. The air inlet is connected to an air compressor 1121 , and the oxygen inlet is connected to an oxygen cylinder 1122 .

[0022] The driving device 13 includes a rack 131, one end of the rack 131 is rotatably connected to an end of the valve core 12 away from the first air outlet 111, a support plate 113 is provided at an end of the valve body 11 away from the first air outlet 111, the rack 131 passes through the support plate 113 and is slidably connected to the support plate 113, the support plate 113 is provided with a gear 1131, the gear 1131 is connected to a motor, the rack 131 and the gear 1131 are meshed, the rack 131 is provided with a rotating groove 1311, the extension direction of the rotating groove 1311 is the same as the extension direction of the rack 131, a rotating shaft 1311a is rotatably connected in the rotating groove 1311, the rotating shaft 1311a is fixedly connected to the valve core 12, a servo motor 1312 is provided at the end of the rack 131 away from the valve core 12, the servo motor 1312 includes a main body and an output shaft, the main body is fixedly connected to the rack 131, and the output shaft is connected to the rotating shaft 1311a.

[0023] The light emitting tube 1111a includes an output tube 1111e, and a guide section 1111f extends downwardly from the output tube 1111e. A sliding tube 1111g extending vertically is slidably connected in the guide section 1111f. A fixed tube 1111g extending vertically is provided at the lower end of the sliding tube 1111g. The fixed tube 1111g and the guide section 1111f are fixedly connected by a connecting piece 1111h. The sliding tube 1111g and the fixed tube 1111g are in contact with each other. A first limiting groove 1111j is provided at the lower end of the sliding tube 1111g. The first limiting groove 1111j is arranged along the circumference of the sliding tube 1111g. A second limiting groove 1111k is provided at the upper end of the fixed tube 1111g. The second limiting groove 1111k is arranged along the circumference of the fixed tube 1111g. An accommodating space 1111j is formed between the first limiting groove 1111j and the second limiting groove 1111k. 111m, the edge of the lens 1111b is arranged in the accommodating space 1111m and is rotatably connected to the accommodating space 1111m, a plurality of blades 1111n are fixedly connected to the lower side of the lens 1111b, the blades 1111n are arranged in sequence along the edge of the lens 1111b, and the blades 1111n extend radially along the lens 1111b, the fixed tube 1111g is provided with a rotating hole 1111p, a rotating block 1111q is rotatably connected in the rotating hole 1111p, a second air inlet 1111d is provided on the rotating block 1111q, a gas nozzle 1111t is provided on a side of the rotating block 1111q away from the air outlet pipe 1111, the gas nozzle 1111t includes an input end and an output end, the input end is connected to the second air inlet 1111d, and from the input end to the output end, the gas nozzle 1111t gradually moves away from the rotating block 1111q and gradually tilts downward;

[0024] When it is necessary to clean the lens 1111b, the rotating block 1111q is rotated so that the output end of the air nozzle 1111t is tilted upward. Under the action of the driving device 13, the air inlet is connected to the first air outlet 111 through the air duct 121, and the air compressor 1121 runs and delivers compressed air to the air inlet. The compressed air moves to the lens 1111b through the air nozzle 1111t and cleans the dust on the lower side of the lens 1111b. The output end of the air nozzle 1111t is directed toward the blade 1111n on the side of the lens 1111b close to the rotating block 1111q. Under the action of the compressed air, the blade 1111n rotates, and the blade 1111n drives the lens 1111b to rotate, and the lower side of the lens 1111b is cleaned.

[0025] A ball 1111r is provided in the accommodation space 1111m to reduce the rotation resistance of the lens 1111b. A fixing bolt 1111s is threadedly connected to the sliding tube, and the fixing bolt 1111s is in contact with the sliding tube.

[0026] Working principle:

[0027] When not in operation, the air passage 121 and the first air inlet 112 are staggered, and the output end of the air nozzle 1111t is tilted downward, see Figure 1 .

[0028] When cutting, place the plate under the light outlet 1111c, and then the laser passes through the lens 1111b and the light outlet 1111c from top to bottom to cut the plate. If oxygen is needed as an auxiliary gas during cutting, the gear 1131 moves, driving the rack 131 to move toward the first air outlet 111, until the airway 121 is connected to the corresponding first air inlet 112, that is, the airway 121 is connected to the oxygen cylinder 1122, see Figure 2 At this time, oxygen passes through the first air inlet 112, the air channel 121, the first air outlet 111, the air outlet pipe 1111, the air nozzle 1111t, and the light outlet 1111c, and then blows to the laser cutting point, which greatly increases the cutting speed. At this time, the lens 1111b can prevent the oxygen in the fixed tube 1111g from moving upward, and the output end of the air nozzle 1111t is facing away from the lens 1111b, which can reduce the oxygen output by the air nozzle 1111t from vibrating the lens 1111b, thereby improving the stability of the laser.

[0029] In this embodiment, the rack 131 can only move along the axial direction of the rack 131, and cannot rotate relative to the support plate 113. When air is needed as the auxiliary gas, the servo motor 1312 is operated, the rotating shaft 1311a rotates in the rotating groove 1311, so that the valve core 12 rotates in the valve body 11, and the airway 121 and the oxygen cylinder 1122 are disconnected until the airway 121 is connected to the other first air inlet 112, that is, the airway 121 is connected to the air compressor 1121. At this time, the air compressor 1121 operates and outputs compressed air. The compressed air passes through the first air inlet 112, the airway 121, the first air outlet 111, the air outlet pipe 1111, the air nozzle 1111t, and the light outlet 1111c, and then blows to the laser cutting point, see Figure 3 .

[0030] When it is necessary to clean the dust on the lower side of lens 1111b, the rotating block 1111q rotates 180 degrees, the output end of the air nozzle 1111t tilts upward, the air compressor 1121 runs, and the air nozzle 1111t outputs compressed air to the blade 1111n. The compressed air drives the blade 1111n to rotate, thereby causing the lens 1111b to rotate, and the compressed air blows away the dust on the lower side of the lens 1111b. During cutting, it passes through the center of lens 1111b, so the center of lens 1111b is the focus of cleaning. Since the air nozzle 1111t is inclined, the compressed air output by the air nozzle 1111t will move toward the central area of ​​lens 1111b under the guidance of lens 1111b, thereby cleaning the dust in the central area of ​​lens 1111b. The rotation of lens 1111b can cause the dust in the central area of ​​lens 1111b to be affected by compressed air at different angles, thereby increasing the cleaning effect. See. Figure 6 .

[0031] When the lens needs to be replaced, loosen the fixing bolt, the fixing bolt and the sliding tube are disengaged, then the upward sliding tube moves upward, the sliding tube and the fixed tube are disengaged, after replacing the lens, the sliding tube moves downward and abuts against the fixed tube again, and then tighten the fixing bolt.

[0032] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. A laser cutting gas valve, characterized in that: include: A valve body, a first air outlet is provided on one side of the valve body, the valve body is provided with a plurality of first air inlets, the first air inlets are arranged along the circumference of the valve body, the first air outlet is connected to an air outlet pipe, the air outlet pipe is connected to a light outlet pipe, the light outlet pipe extends vertically, a lens is provided in the light outlet pipe, a light outlet is provided at the lower end of the light outlet pipe, the light outlet pipe is provided with a second air inlet, the second air inlet is connected to the air outlet pipe, and the second air inlet is provided below the lens; A valve core, wherein the valve core is slidably connected to the valve body, the valve core and the valve body are rotatably connected, the valve core is provided with an air passage, one end of the air passage is connected to the first air outlet, and the other end of the air passage is used to be connected to one of the first air inlets; A driving device, the driving device is connected to the valve core, the driving device is used to drive the valve core to move along the axial direction of the valve body, and the driving device is also used to drive the valve core to rotate within the valve body; Wherein, the number of the first air inlets is two, the first air inlets include an oxygen inlet and an air inlet, the air inlet is connected to an air compressor, and the oxygen inlet is connected to an oxygen cylinder; When cutting, place the plate under the light outlet, and then the laser passes through the lens and the light outlet from top to bottom to cut the plate. If oxygen is needed as an auxiliary gas during cutting, the gear moves to drive the rack to move toward the first air outlet until the airway is connected to the corresponding first air inlet. The driving device comprises a rack, one end of the rack is rotatably connected to an end of the valve core away from the first air outlet, a support plate is provided at an end of the valve body away from the first air outlet, the rack passes through the support plate and is slidably connected to the support plate, the support plate is provided with a gear, the gear is connected to a motor, the rack is meshed with the gear, the rack is provided with a rotation groove, the extension direction of the rotation groove is the same as the extension direction of the rack, a rotating shaft is rotatably connected in the rotation groove, the rotating shaft is fixedly connected to the valve core, a servo motor is provided at one end of the rack away from the valve core, the servo motor comprises a main body and an output shaft, the main body is fixedly connected to the rack, and the output shaft is connected to the rotating shaft; The light output tube comprises an output tube, a guide section extending downwardly from the output tube, a sliding tube extending vertically is slidably connected in the guide section, a fixed tube extending vertically is arranged at the lower end of the sliding tube, the fixed tube and the guide section are fixedly connected by a connecting piece, the sliding tube abuts against the fixed tube, a first limiting groove is arranged at the lower end of the sliding tube, the first limiting groove is arranged along the circumference of the sliding tube, a second limiting groove is arranged at the upper end of the fixed tube, the second limiting groove is arranged along the circumference of the fixed tube, an accommodating space is formed between the first limiting groove and the second limiting groove, and the lens The edge is arranged in the accommodating space and is rotatably connected to the accommodating space. A plurality of blades are fixedly connected to the lower side of the lens. The blades are arranged in sequence along the edge of the lens and extend radially along the lens. The fixed tube is provided with a rotating hole. A rotating block is rotatably connected in the rotating hole. The second air inlet is arranged on the rotating block. A gas nozzle is arranged on a side of the rotating block away from the air outlet pipe. The gas nozzle includes an input end and an output end. The input end is connected to the second air inlet. From the input end to the output end, the gas nozzle gradually moves away from the rotating block and gradually tilts downward. When the lens needs to be cleaned, the rotating block is rotated so that the output end of the air nozzle is tilted upward. Under the action of the driving device, the air inlet is connected to the first air outlet through the air duct, the air compressor runs and delivers compressed air to the air inlet, and the compressed air moves to the lens through the air nozzle and cleans the dust on the lower side of the lens. The output end of the air nozzle is toward the blade on the side of the lens close to the rotating block. Under the action of compressed air, the blade rotates, and the blade drives the lens to rotate, and the lower side of the lens is cleaned.

2. A laser cutting gas valve according to claim 1, characterized in that: A rolling ball for reducing the rotation resistance of the lens is arranged in the accommodating space.

3. A laser cutting gas valve according to claim 1, characterized in that: The sliding tube is threadedly connected with a fixing bolt, and the fixing bolt abuts against the sliding tube.

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