TWI583461B - Nozzle and metal die casting machine with the nozzle - Google Patents

Description

Nozzle and metal die casting machine having the same

The present invention relates to a spray head, and more particularly to a spray head of a metal die casting machine and a metal die casting machine having the same.

Referring to Figures 1 and 2, a conventional spray head 1 suitable for use in a metal die casting machine has a body 11, a four-liquid sprayer 12, a cover plate 13, and a plurality of nozzles 14. The body 11 has two elongated slots 111 on opposite sides and a centrally located air slot 112. Each of the two single-liquid sprayers 12 is disposed at opposite ends of one of the elongated slots 111 for providing atomized working fluid into the corresponding elongated receptacles 111. The cover plate 13 is disposed on the body 11 to close the elongate cavity 111 and the air groove 112, and the nozzles 14 are inserted on the cover plate 13 to communicate with the elongated slots 111 and the gas groove 112 are configured to output the atomized working fluid in the elongated tank 111 and output the high pressure gas in the gas tank 112.

The ends of the nozzles 14 are bent according to the shape of the mold on the metal die casting machine, that is, when it is determined that a certain position in the mold needs to be sprayed with high pressure gas, the nozzle communicating with the gas groove 112 is bent. 14 to the location. Similarly, if a certain position needs to be sprayed with the working fluid, one of the nozzles 14 is also bent to the position. Thus, depending on the mold, it is often necessary to replace the nozzle 1 with a suitable one, and re-tune the position of the nozzles 14, but this also causes an increase in cost and is relatively troublesome to use.

Accordingly, it is an object of the present invention to provide a spray head for a metal die casting machine that can adjust the range of sprayed working fluid as needed.

Therefore, the nozzle of the metal die casting machine of the present invention is suitably mounted on a frame of a metal die casting machine through a driving arm, and the frame is provided with a male die and a female die which can be relatively opened and closed. The nozzle of the metal die casting machine comprises: a main body, a plurality of sprayers, and a plurality of spray tube units.

The body extends in a long direction and includes two buffer chamber units formed inside. The buffer chamber units are respectively located at opposite sides of the main body, and each of the buffer chamber units has a plurality of buffer chambers, and the buffer chambers are arranged along the long direction and are not connected to each other.

The sprayers are used to atomize the working fluid and are connected to the buffer chambers, respectively. Each sprayer includes a spray port that communicates with the buffer chamber and is used to output an atomized working fluid.

The spray tube units are disposed in the body and are respectively connected to the buffer chambers. Each spray tube unit includes at least one spray tube that communicates with the buffer chamber.

The nozzle of the metal die casting machine can be moved between the male mold and the master mold, and the sprayer is controlled to allow the corresponding spray tube unit to spray the atomized working fluid to the male mold and the master mold.

Another object of the present invention is to provide a metal die casting machine capable of adjusting the range of the spray working fluid depending on the size of the mold without correspondingly replacing the spray head.

Thus, the metal die casting machine of the present invention comprises: a machine table, and a nozzle as described above.

The machine base comprises a frame, a driving arm disposed on the frame, and a male die and a female die disposed on the frame and relatively openable.

The spray head is disposed to the drive arm and is movable by the drive arm.

The effect of the present invention is that, through the separate buffer chambers, and the corresponding sprayers and the spray tube units, the user can confirm the corresponding position of the spray tube unit according to the position to be sprayed, and then pass through the spray tube unit. The sprayer controls whether the working fluid is output to the spray tube unit. Thus, the spray head can adjust the range of the sprayed working fluid according to needs, and does not need to be replaced together due to different molds, thereby saving cost.

Referring to Figures 3 and 4, an embodiment of the metal die casting machine of the present invention comprises a machine 2 and a nozzle 3.

The machine 2 includes a frame 21, a driving device 22, a driving arm 23, and a die 24. The frame 21 has a base 211, two spaced apart bases 212, four spaced apart support shafts 213, a moving base 214, and a secondary seat 215. Each of the pedestals 212 has a rectangular cross section, and is disposed erectly on opposite sides of the pedestal 211, and has four installation portions 216 respectively formed at four corners. The opposite ends of each of the support shafts 213 are respectively connected to the bases 212, and are disposed correspondingly to the setting portions 216 of the respective bases 212. The movable seat 214 has a rectangular cross section and has four moving portions respectively formed at four corners, and each moving portion is movably disposed on each of the support shafts 213. The sub-mount 215 is disposed in one of the pedestals 212.

The driving device 22 is disposed on the sub-mount 215 of the frame 21 and has a driver 221 and a driving rod 222. One end of the driving rod 222 is coupled to the driver 221, and the other end is movably mounted to the base 212. One end of the drive rod 222 can be displaced on the base 212 by the push of the driver 221.

The drive arm 23 is disposed on the sub-mount 215 of the frame 21. The driving arm 23 can adopt a conventional mechanical arm such as a linear arm, a SCARA arm, a joint multi-axis robot arm, and the like. The joint multi-axis robot can be subdivided into three-axis arms with three axes or less, and multi-axis arms with four or more axes.

The mold 24 is disposed on the frame 21 and has a male mold 241 and a female mold 242 that can be relatively opened and closed. The male mold 241 is disposed on the movable seat 214 of the frame 21, and the female mold 242 is disposed on the base 212 opposite to the male mold 241, and is connected to the driving rod 222 of the driving device 22, It can be pushed by the drive rod 222 to be displaced relative to the male mold 241. The mold 24 is adjusted according to the size of the workpiece to be die-cast, and usually the mold 24 of a suitable size is selected for the die casting operation.

Referring to Figures 4 and 5, the spray head 3 is disposed on the drive arm 23 and is movable by the drive arm 23. The spray head 3 comprises a main body 4, a plurality of sprayers 5, a plurality of spray tube units 6, two support frames 7, two air tube units 8, and a control unit 9.

Referring to FIG. 5, FIG. 6, and FIG. 7, the main body 4 extends along a long direction L, and includes a top seat 41, two buffer chamber units 42 formed therein, a base 43, and an air passage 44.

The top seat 41 has two inverted T-shaped frames 411, two side plates 412, an upper cover plate 413, and a top post 410. The inverted T-shaped frames 411 are spaced apart along the long direction, and each inverted T-shaped frame 411 has an accommodating space 414 on opposite sides. The side plates 412 extend along the long direction and are correspondingly disposed in the accommodating spaces 414. The upper cover 413 is capped over the side plates 412, and the side plates 412 are fastened between the inverted T-shaped frame 411 and the upper cover plate 413. The top post 410 is disposed at the center of the upper cover 413 and is for connecting with the driving arm 23.

The buffer chamber units 42 are formed inside the top seat 41 and are respectively located at opposite sides of the main body 4. Each of the buffer chamber units 42 has a plurality of buffer chambers 421 which are arranged along the longitudinal direction L and are not in communication with each other. In this embodiment, a plurality of spaces that do not communicate with each other are formed by excavating the side plates 412 and the upper cover plate 413, and the space constitutes the buffer chambers 421. The top seat 41 also has a plurality of flaps 415, which are respectively disposed in the buffer chambers 421, and each of the flaps 415 has a plurality of perforations 416, each of the perforations 416 having an aperture of 0.5 to Between 5 mm, preferably 1 to 3.5 mm. The aperture of this embodiment is at 2 mm.

Referring to FIG. 8 and FIG. 9 , the base 43 is disposed under the top seat 41 and has a pillar 431 interposed between the side plates 412 , a air tube bracket 432 disposed at the bottom of the pillar 431 , and two An extension 433 below the air tube frame 432. The air tube holder 432 extends in the longitudinal direction L. The extension frames 433 are respectively disposed at the bottom of the air tube holder 432 at intervals in the longitudinal direction L.

The air passage 44 extends downward from the top post 410 of the top seat 41, continues to extend through the center of the upper cover 413 to the post 431 (see FIGS. 5 and 6), and finally to the air tube bracket 432. An air groove 441 is formed therein. The gas flow path 44 is capable of introducing gas from the outside to the gas pipe units 8.

Referring to Figures 7 and 10, the sprayers 5 are used to atomize the working fluid and are connected to the buffer chambers 421, respectively. In the present embodiment, each sprayer 5 is a two-liquid sprayer 51. The two-liquid sprayer 51 can introduce two working fluids from the outside and atomize them separately, and then input them into the corresponding buffer chambers 421, respectively. The aforementioned working liquid can be divided into a release liquid and water. The two-liquid sprayer 51 has a body 52, two valve members 53, and two flow members 54.

Referring to FIG. 7 , FIG. 11 and FIG. 12 , the body 52 has a mist chamber 521 , a rod portion 522 , a dispersing portion 523 , a second flow path 524 , and an air passage 525 . The mist chamber 521 is cut into the interior of the body 52 and has a spray port 526. The spray port 526 communicates with the corresponding buffer chamber 421. The rod portion 522 is formed inside the mist chamber 521 and protrudes from the spray port 526. The dispersing portion 523 is formed at the end of the rod portion 522 and has a substantially disk shape, and is received in the corresponding buffer chamber 421 and opposed to the spray port 526.

The flow passages 524 are cut into the interior of the body 52, and two different types of working fluids can be introduced into the mist chamber 521 from the outside. The end of the first-class passage 524 is cut to the rod portion 522, and the working fluid can be introduced into the flow path I. The end of the other flow path 524 is grooved to the outer peripheral surface of the mist chamber 521, and the working fluid can be introduced into the flow path II. The air passage 525 is cut into the interior of the body 52, and one end thereof is cut to the end portion of the mist chamber 521 away from the spray port 526, and gas can be introduced into the path III. The air passage 525 can introduce high-pressure gas into the mist chamber 521 from the outside, and the aforementioned working fluid is atomized in the mist chamber 521 and blown out from the spray port 526. The atomized working fluid that is blown out is blocked by the dispersing portion 523, and the hysteresis stays in the buffer chamber 421, and is uniformly mixed.

Referring to Figures 10, 11 and 12, the first channel 524 introduces a release fluid and the other runner 524 introduces water. In the present embodiment, the flow passage 524 that is cut into the rod portion 522 is introduced into the release liquid, so that the release liquid flows in through the path I, and the other flow passage 524 introduces water, so the water flows in through the path II, and finally The gas flowing in from path III will force the release liquid or water to atomize in the mist chamber 521 and eject from the spray port 526. The above-mentioned release liquid is a solution prepared by mixing water and a release agent, and the ratio can be adjusted as needed.

Referring to Figures 11 and 12, the valve members 53 are respectively disposed in the flow passages 524, and the flow passages 524 can be opened and closed, respectively. The valve members 53 are respectively disposed in the two valve chambers 527 which are cut out from the body 52. Each valve member 53 has a top plug 531 and a bottom plug 532. Each plug 531 is fixed to the top end of each valve chamber 527 and closed. The bottom plug 532 is movably disposed in the valve chambers 527 and can block the corresponding flow passages 524. The bottom plug 532 can be forced to block the corresponding flow passage 524 by inputting gas between the top plug 531 and the bottom plug 532. By inserting the gas between the bottom plug 532 and the valve chamber 527, forcing the bottom plug 532 to move toward the top plug 531, the bottom plugs 532 can be prevented from blocking the flow passages 524. The valve members 53 can be replaced by other conventional elements and are not limited by the disclosure of the present invention.

The flow devices 54 are disposed in the flow channels 524, respectively. Each of the flow members 54 is a screw valve that can be locked into the flow passages 524 by rotation, thereby reducing the inflow of the working fluid.

Referring to FIGS. 7 and 8, the spray tube units 6 are disposed on the main body 4 and are respectively connected to the buffer chambers 421. Each spray tube unit 6 includes seven spray tubes 61 that communicate with the buffer chamber 421. Each spray tube 61 has a communicating portion 611 and an outwardly bent bent portion 612. The connecting portion 611 is disposed on the side plate 412, and the top seat 41 further has a plurality of flanges 417 formed in the buffer chambers 421, and the flanges 417 respectively correspond to the positions of the communicating portions 611 of the spray tubes 61. . The height of each flange 417 is between 0.3 and 3 mm, preferably 0.7 to 2 mm, and is 1 mm in this embodiment. The bent portions 612 of each spray tube unit 6 are spaced apart from each other. In this embodiment, the six bent portions 612 in each spray tube unit 6 are arranged in a hexagonal shape, and the last bent portion 612 is located in the center of the hexagonal shape, but the arrangement is not The present invention is limited thereto, and the number of the spray tubes 61 in each spray tube unit 6 may be one to six, or eight or more, and is not limited to those disclosed in the present invention.

Referring to Figures 8 and 9, the support frames 7 extend along the longitudinal direction L and are respectively located on opposite sides of the top seat 41, respectively for the spray tube units 6 on opposite sides of the main body 4. The arrangement is such that the spray tubes 61 are fixed.

The tracheal units 8 are respectively disposed on the base 43 of the main body 4 and on opposite sides of the base 43 and communicate with the air groove 441. Each of the air tube units 8 includes a plurality of straight air tubes 81 disposed in the air tube holder 432, and a plurality of curved air tubes 82 disposed in the extension frame 433. The straight air tubes 81 and the curved air tubes 82 can spray the gas input from the air passages 44 to the male mold 241 and the female mold 242.

Referring to Figures 4 and 9, the control unit 9 is coupled to the sprayers 5 for controlling the operation of the respective sprayers 5. In the present embodiment, the gas input to the valve members 53 in the respective atomizers 5 (see FIG. 12) is controlled, thereby controlling the operation of the respective atomizers 5, so that it can be operated by a solenoid valve (not shown). . The user can preset the parameters, sequentially start the preset sprayers 5, first introduce the water, and then introduce the release liquid, so that the mold 24 is first sprinkled with water to cool, and then spray the release liquid. .

Spray method

Referring to Figures 4 and 9, after the die casting machine is completed, the subsequent die casting process can be smoothly carried out by removing the flocculation, cooling and spraying the release liquid. The steps are as follows: after the metal die casting machine completes the metal die casting, the male mold 241 and the female mold 242 are opened, and the castings therein (not shown) are taken out. Then, the driving arm 23 is driven by the control unit 9, and the nozzle 3 is moved between the male mold 241 and the female mold 242, and the gas unit 8 is sprayed with gas to blow off the metal burrs on the mold 24. Next, confirm the position on the mold 24 where the working fluid needs to be sprayed to confirm the corresponding spray tube unit 6, and then pass through the sprayers 5 corresponding to the spray tube unit 6, and input the working fluid to allow the spray tube units to be 6 Spray the atomized working fluid to the male mold 241 and the female mold 242. Next, the mold 24 is first cooled by inputting water, and then the release liquid is applied to the mold 24. Finally, the air tube units 8 are again operated to blow air, and the release liquid is further cooled to stabilize. When the foregoing steps are completed, the metal die casting machine can perform the next round of die casting process.

When the mold 24 is replaced with other sizes, it is only necessary to determine the position of the mold 24 to be sprayed with gas or working fluid, and then control the corresponding sprayers 5 without replacing them with nozzles of corresponding sizes.

It is worth mentioning that the sprayer 5 can also be a conventional one-liquid sprayer. Although it is only possible to introduce a single type of working fluid, it is not possible to determine whether the introduced working fluid is water or a release fluid. However, since the present invention has separate buffer chambers 421 (see Fig. 7), as long as the partial The single-liquid atomizer is connected to the water source, and the remaining part is connected to the liquid source, and the corresponding single-liquid atomizer is activated according to the water spray or the release liquid, and the effect of outputting the water and the release liquid in stages can also be achieved. .

Through the above description, the advantages of the present invention can be further summarized as follows:

1. Through the separate buffer chambers 421 and the sprayers 5 and the spray tube units 6, the user can confirm the corresponding spray tubes according to the size of the mold 24 and the position to be sprayed. The unit 6 controls the output of the working fluid to the spray tube unit 6 through the sprayers 5, so that the spray head 3 can adjust the range of the sprayed working fluid as needed, and does not need to be replaced together due to different molds. Can be more cost effective.

2. The bent portions 612 of each spray tube unit 6 are spaced apart from each other, thereby allowing the sprayed working fluid to be uniformly sprayed without excessive concentration in a specific range, improving the efficiency of spraying.

3. When the double liquid atomizer 5 is used, different working liquids can be separately output through the same, thereby allowing the nozzle 3 to first cool the mold 24 with high specific heat water, and then spraying the release liquid to shorten the cooling time. And save the amount of release liquid used.

4. When using a conventional single-liquid sprayer, as long as some of the single-liquid sprayers are connected to the water source in advance, the remaining part is connected to the release liquid source, and then the corresponding single liquid is activated according to the water spray or the release liquid. The sprayer can also achieve the effect of outputting water and release liquid in stages.

5. The atomized working fluid blown by the two-liquid atomizer 51 is blocked by the dispersing portion 523, and the hysteresis stays in the buffer chamber 421, and is uniformly mixed.

6. The flaps 415 can not only further mix the atomized working fluid, but also distribute the atomized working fluid evenly in the buffer chamber 421, so that the flow rate of the working fluid flowing out from each spray tube 61 is nearly uniform. .

7. The flanges 417 can generate a turbulence effect, such that turbulence occurs adjacent to the spray tubes 61, allowing the atomized working fluid to be mixed again, so that the sprayed working fluid is more evenly distributed.

8. The drive arm 23 can drive the displacement of the nozzle 3 to adjust the position of the nozzle 3 relative to the mold 24. In this way, it is possible to spray the position of the mold 3 which is difficult to spray to the gas or the working fluid, so as to achieve the better effect of removing the filter, cooling and spraying the release liquid by the metal burrs.

9. The tracheal unit 8 is composed of different types of trachea, which can cope with different angles of spraying, so that the blowing efficiency of the metal burrs is further improved.

In summary, when the metal die casting machine of the present invention replaces the mold 24 into other sizes, as long as the position where the gas or the working fluid needs to be sprayed is determined again, the corresponding sprayer 5 can be controlled without being replaced with The nozzle 3 of the corresponding size can indeed achieve the object of the present invention.

However, the above is only the embodiment of the present invention, and the scope of the invention is not limited thereto, and all the equivalent equivalent changes and modifications according to the scope of the patent application and the patent specification of the present invention are still The scope of the invention is covered.

1‧‧‧Spray
11‧‧‧Ontology
111‧‧‧Long trough
112‧‧‧ gas trough
12‧‧‧Single liquid sprayer
13‧‧‧ Cover
14‧‧‧ nozzle
2‧‧‧ machine
21‧‧‧Rack
211‧‧‧ pedestal
212‧‧‧Base
213‧‧‧Support shaft
214‧‧‧Mobile seat
215‧‧‧Second seat
216‧‧‧Setting Department
22‧‧‧ drive
221‧‧‧ drive
222‧‧‧ drive rod
23‧‧‧ drive arm
24‧‧‧Mold
241‧‧‧Male model
242‧‧‧Female model
3‧‧‧Spray
4‧‧‧ Subject
41‧‧‧ top seat
410‧‧‧Top column
411‧‧‧Inverted T-frame
412‧‧‧ side panels
413‧‧‧Upper cover
414‧‧‧ accommodating space
415‧‧ ‧ pieces
416‧‧‧Perforation
417‧‧‧Flange
42‧‧‧buffer unit
421‧‧‧ buffer room
43‧‧‧Base
431‧‧‧ pillar
432‧‧‧pipe rack
433‧‧‧Extension
44‧‧‧ air passage
441‧‧‧ gas trough
5‧‧‧ sprayer
51‧‧‧Two-liquid sprayer
52‧‧‧ body
521‧‧‧ fog room
522‧‧‧ pole
523‧‧‧Distribution Department
524‧‧‧ flow path
525‧‧‧ airway
526‧‧‧ spray port
527‧‧‧Valves
53‧‧‧ valve parts
531‧‧‧ top plug
532‧‧‧Basse
54‧‧‧Flower parts
6‧‧‧ spray tube unit
61‧‧‧ spray tube
611‧‧‧Connecting Department
612‧‧‧Bend
7‧‧‧Support frame
8‧‧‧ tracheal unit
81‧‧‧straight trachea
82‧‧‧ Curved trachea
9‧‧‧Control unit
L‧‧‧Long direction
I~III‧‧‧ Path

Other features and advantages of the present invention will be apparent from the following description of the drawings, wherein: Figure 1 is an exploded perspective view of a conventional metal die casting machine; Figure 2 is a partial side view, BRIEF DESCRIPTION OF THE DRAWINGS FIG. 3 is a perspective view showing an embodiment of a metal die casting machine of the present invention; FIG. 4 is a side view showing the embodiment of the metal die casting machine of the present invention; FIG. 5 is a perspective view illustrating Figure 6 is a partial exploded view showing the two-buffer chamber unit and a plurality of flaps of the embodiment; Figure 7 is a cross-sectional view taken along line VII-VII of Figure 5, illustrating a majority of the embodiment Figure 8 is a front view showing the head of the embodiment; Figure 9 is a side view showing the head of the embodiment; Figure 10 is a perspective view showing a two-liquid sprayer of the embodiment; 11 is a cross-sectional view taken along line XI-XI of Fig. 10, illustrating the two-liquid atomizer of the embodiment; and Fig. 12 is a cross-sectional view taken along line XII-XII of Fig. 10, illustrating the two-liquid atomizer of the embodiment.

3‧‧‧Spray

41‧‧‧ top seat

411‧‧‧Inverted T-frame

412‧‧‧ side panels

414‧‧‧ accommodating space

42‧‧‧buffer unit

421‧‧‧ buffer room

5‧‧‧ sprayer

51‧‧‧Two-liquid sprayer

522‧‧‧ pole

523‧‧‧Distribution Department

526‧‧‧ spray port

53‧‧‧ valve parts

54‧‧‧Flower parts

6‧‧‧ spray tube unit

61‧‧‧ spray tube

611‧‧‧Connecting Department

612‧‧‧Bend

52‧‧‧ body

521‧‧‧ fog room

7‧‧‧Support frame

L‧‧‧Long direction

Claims (14)

A metal die casting machine nozzle is adapted to be mounted on a frame of a metal die casting machine through a driving arm. The frame is provided with a male mold and a female mold which can be relatively opened and closed. The nozzle of the metal die casting machine comprises: a body extending along a long direction and including two buffer chamber units formed inside, the buffer chamber units are respectively located at opposite sides of the body, and each buffer chamber unit has a plurality of buffer chambers, and the buffers The chambers are arranged along the long direction and are not connected to each other; a plurality of sprayers for atomizing the working fluid are disposed in the body and are respectively connected to the buffer chambers, and each sprayer includes a spray port, the spray port is connected to the buffer And a plurality of spray tube units disposed in the main body and respectively connected to the buffer chambers, each spray tube unit including at least one spray tube communicating with the buffer chamber; the metal die casting machine The spray head can be moved between the male mold and the female mold, and the sprayer is controlled to allow the corresponding spray tube unit to spray the atomized working fluid to the male mold and the female mold. The spray head suitable for a metal die casting machine according to claim 1 further comprises a control unit coupled to the sprayers for controlling the operation of the respective sprayers. A spray head suitable for a metal die casting machine according to claim 1, wherein each spray tube unit comprises a plurality of spray tubes, each spray tube having an outwardly bent bend portion, the bend of each spray tube unit The folds are spaced apart from each other. The spray head suitable for a metal die casting machine according to any one of claims 1 to 3, wherein each sprayer is a two-liquid sprayer, and the two-liquid sprayer comprises two flow passages and two valve members, and the flow passages can be respectively Two different types of working fluids are introduced from the outside, and the valve members are respectively disposed in the flow passages, and the flow passages can be opened and closed respectively. The spray head suitable for a metal die casting machine according to claim 4, wherein each two-liquid sprayer further comprises a rod portion and a dispersing portion, the rod portion projects from the spray port, and the dispersing portion is formed on the rod portion The end is substantially disk-shaped and is received in the corresponding buffer chamber and opposite to the spray port. The nozzle for a metal die casting machine according to any one of claims 1 to 3, further comprising a two air pipe unit, the air pipe units being respectively disposed on opposite sides of the main body, and capable of spraying gas to the male mold and The master model. A nozzle suitable for a metal die casting machine according to claim 6, wherein the body further comprises a top seat extending along the long direction and a base, the buffer chamber unit being formed inside the top seat, the base setting Below the top seat, and for the air tube units. A nozzle suitable for a metal die casting machine according to claim 7, wherein the top seat has two inverted T-shaped frames, two side plates, an upper cover plate, and a top column along which the inverted T-shaped frame is The directional spacing is disposed, and each of the inverted T-shaped frames has an accommodating space on opposite sides, the side plates extend along the long direction, and are correspondingly disposed in the accommodating spaces, and the upper cover covers the same Above the side plates, the side plates are fastened between the inverted T-shaped frame and the upper cover plate, and the top post is disposed on the upper cover plate for connection with the driving arm. A nozzle suitable for a metal die casting machine according to claim 7, wherein the base has a gas pipe frame, and an extension frame disposed under the gas pipe frame, each gas pipe unit including a plurality of straight shapes disposed on the gas pipe frame The trachea, and most of the curved trachea disposed in the extension. A nozzle suitable for a metal die casting machine according to claim 9, wherein the body further comprises an air flow passage formed therein, the air flow passage extending from the top seat to the base and communicating to the air pipe units, and Gas can be input from the outside to the gas pipe units. The spray head suitable for a metal die casting machine according to any one of claims 1 to 3, further comprising two support frames extending along the long direction, respectively, for the spray tube units located on opposite sides of the main body, thereby providing Let the spray tubes be fixed. A nozzle suitable for a metal die casting machine according to any one of claims 1 to 3, wherein the body further has a plurality of flaps, the flaps being respectively disposed in the buffer chambers, and each of the flaps having a majority perforation. A nozzle suitable for a metal die casting machine according to any one of claims 1 to 3, wherein the body has a plurality of flanges formed in the buffer chambers, the flanges respectively corresponding to the spray tubes position. A metal die casting machine comprising: a machine platform comprising a frame, a driving arm disposed on the frame, and a male die and a female die disposed on the frame and relatively openable; and The head according to any one of items 1 to 13, wherein the head is provided to the drive arm and is movable by the drive arm.