JPS60262000A - Air feeding and exhausting changeover device - Google Patents

Abstract

PURPOSE:To simplify construction by providing an air passage, a compressed air intake, and a small hole between an inside cylinder body and a frame to enable air in both outside and inside cylinders to move in the opposite directions. CONSTITUTION:Nozzle bodies 2, 2' which are hollow cylinders, are provided in the through hole of a frame body 1, while air passages 4, 4' which are connected to air intakes 5, 5', are provided between the nozzle bodies 2, 2' and the outside cylinder bodies 1. Thereby, it is possible to switch over the same duct into either of two conditions of intake and exhaust, merely by controlling a compressed air in its being jetted out from either of the right and left inside cylinders 2, 2'. Accordingly, an air feeding and exhausting chageover device can be made compact and low cost.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an air supply/exhaust switching device suitable for clothing press machines and the like.

(Prior Art) Conventionally, in a clothes press machine, clothes attached to a trowel are treated with steam jetted from the trowel, and then dried with air.
It is known to give clothes a fluffy and soft finish without applying pressure. Specifically, this method involves spraying steam onto clothes attached to a trowel and immediately cooling and drying them with air (outside air) sucked in by a vacuum mechanism. When finishing clothes, the problem is that the hair on the surface remains fallen during suction, making it impossible to obtain a finish with the texture of a brand new material. It is known that air can be sucked from

In such a clothes press, it is necessary to switch between blowing air and suctioning air to clothes that are not pressurized. For this reason, conventionally, for example, on the lower trowel,
A connecting pipe for air supply (blowout) and a connecting pipe for exhaust air (suction) are provided, and the former is connected to the blower's air outlet [1] through an air outlet valve.
The latter is connected to the intake port of a blower via a vacuum valve. However, there is a drawback that the air supply and exhaust air conduits must be separated. On the other hand, the lower trowel is provided with an air supply/exhaust port that has a common air supply/exhaust port, and the air supply/exhaust port is connected to the blower's air outlet and intake port by an air pipe branched into two. By operating the valve mechanism installed in each branch, the supply and discharge of the lower iron "1"
It is also known to switch to the air outlet of the blower during the blowing process and to the air inlet of the blower during the suction process. However, this known switching valve device has a configuration in which the valve mechanisms provided in the branch path to the ventilation outlet and the branch path of the intake valve are mechanically interlocked. 316. (Objective of the Invention) The object of the present invention is to provide an air supply/exhaust switching device that can switch between supplying and exhausting air to the same pipe line using compressed air. It is about providing.

(Structure of the Invention) The air supply/exhaust switching device of the present invention has two inner cylinder bodies arranged one after the other in a through hole of a frame body having a cylindrical through hole, and a gap between each inner cylinder body and the frame body. each has an independent air passage continuous in the circumferential direction at its axially intermediate portion, the frame body is provided with a compressed air intake for each air passage, and each inner cylinder is provided with an air passage connected to the outer periphery of the inner cylinder. A small hole extending from the air passage into the inner cylinder is provided obliquely in the axial direction toward different opening ends of the inner cylinder,
A recess is formed on the inner surface of each inner cylinder so that the opening of the small hole belonging to the inner cylinder is located at the step and a tapered slope is formed in front of the opening of the small hole, The air inside the outer and inner cylinders can be moved in opposite directions depending on the direction of the compressed air injected from the small holes of each inner cylinder.

)(Example) The present invention will now be described with reference to an illustrated embodiment.

FIG. 1 shows a sectional view of an air supply/exhaust switching device 40 used for the lower iron 30 of the clothes press illustrated in FIG. 3. As shown in FIG.

In the figure, 1 is a frame body having a cylindrical through hole (a cylindrical hollow body in this embodiment), and within the through hole of this frame body 1 are two nozzle bodies 2, 2 each made of a hollow cylinder. ' are inserted one after the other in the axial direction. In this embodiment, the two nozzle bodies 2.2' are placed in close contact with each other, but they can also be placed apart from each other. The outer shape of the frame body l and the cross-sectional shape of the cylindrical through hole thereof can be any shape, but in this embodiment, it is a hollow cylindrical body.

Further, the outer shape of the nozzle body 2.2', which is a hollow cylindrical body, has only to have a cross-sectional shape complementary to that of the through hole of the frame body l and an outer shape that can be inserted into the through hole. In this embodiment, the nozzle body 2.2'' is also a cylindrical hollow cylinder.
The frame body 1 will be referred to as an "outer cylindrical body", and the nozzle bodies 2 and 2° will be referred to as an "inner cylindrical body".

The outer peripheral surface near both ends of each inner cylinder 2.2° is in contact with the inner peripheral surface of the outer cylinder l, and is airtightly sealed by O-rings 3 provided near both ends IζJ. ing. In the intermediate region between the locations hermetically sealed by the O-ring 3, there is an air passage 4.2 continuous in the circumferential direction between each inner cylinder 2.2' and the outer cylinder l.
4' is formed. Each of the air passages 4, 4'' communicates separately with compressed air intake ports 5.5° provided in the side wall of the outer cylinder l one after the other in the cylinder axis direction.Compressed air intake port 5 .5° are connected to a compressed air source by means of connecting pipe parts 6, 6'', which are respectively protruded from the side wall of the outer cylinder l. 6A, 6°B are connected to a compressed air source by means of connecting pipe parts 6. It is a threaded part provided inside the 6゛.

Inside both open ends of the outer cylindrical body l, there are trumpet tubes 7, respectively.
．． One end of 7' is inserted and connected in a screw engagement manner. The end of this wrapper tube 7.7' which is screwed into the outer barrel l has an internal diameter that is the same as the inner diameter of the inner barrel 2.2' and is continuous with the inner barrel 2.2°. And the trumpet pipe 7,
The inner diameter of the other end of the wrapper tube 7.7' is larger than the inner diameter of the inner cylindrical bodies 2, 2'', and the outer periphery of the other end of the wrapper tube 7.7' has an inner surface in order to connect a desired conduit. The joint tube part with threaded part is provided at 8.8°. Therefore, the trumpet tube 7.
The inner diameter of tube 7' gradually increases from the inner cylinder 2, 2'' toward the joint tube portion 8, 8' to reduce the loss of air passing through it.

In each inner cylinder 2.2°, a small hole 9.9' extending from the air passage 4.4' on the outer periphery of the inner cylinder into the inner cylinder is axially directed toward the different open ends of the inner cylinder. It is installed diagonally. Furthermore, on the inner surface of each inner cylinder 2.2', the opening of the small hole 9.9' belonging to the inner cylinder to the inner surface of the inner cylinder is located at the stepped portion 11.11', and A recess 10.10' is formed on the inner surface of the inner cylinder so that a tapered inclined surface 12.12' is formed in front of the opening.

Next, the structure of the inner cylinder 2.2' will be explained. Since the inner cylinder 2.2' has exactly the same construction with the only difference being that it is arranged in the opposite direction within the outer cylinder 1, only the inner cylinder 2 will be described here. still,
When necessary for explanation, the same numerals will be given to the parts of the inner cylinder 2' that correspond to the inner cylinder 2, and the parts belonging to the inner cylinder 2° will be distinguished by adding a dash.

In FIG. 2, the inner cylindrical body 2 is connected to the outer cylindrical body l by 11j1.
．． In order to form a suitable air passage 4, a recess 13 continuous in the circumferential direction is provided in the middle part of the outer circumferential surface in the axial direction of the cylinder, and a recess 13 is provided in the circumferential direction on both edges of the outer circumferential surface in the axial direction of the cylinder. A stepped portion 14, 15 for storing an O-ring that continues in the direction is provided. Therefore, the shape of the outer peripheral surface of the inner cylinder 2 is as if a cylinder with an outer diameter one step larger than the inner diameter of the outer cylinder 1 is used, and near both ends there are flanges with a diameter that is approximately the same as the inner diameter of the outer cylinder l. 16.1
A groove 20 that continues in the circumferential i direction is provided between the two flanges, that is, in the recess 13, on one open end (intake port) 18 side.

The recess lO on the inner circumferential surface of the inner cylinder 2 extends from the groove 20.

The inner diameter of the inner cylinder body 2 gradually increases from the open end (exhaust port) 19 on the far side to approximately the center of the inner cylinder body 2 toward the groove 20 . Therefore, the inner circumferential surface of the inner cylinder 2 to which the groove 20 belongs is depressed to the deepest part of the recess 13 with a step 11. A plurality of small holes 9 are provided so as to pass through the stepped portion 11 from the groove 20 to the deepest part of the recess 10, that is, diagonally toward the open end 19 on the exhaust port side. In this embodiment, four small holes 9 are provided at equal intervals in the circumferential direction of the stepped portion 14. As will be described later, these small holes 9 function as compressed air injection nozzles, and the tapered slope from the deepest part of the four parts 10 to the open end 19 functions as a guide surface for the injected compressed air. do. In order to facilitate the drilling of the four small holes 9, the top of the collar 17 is partially cut out on the small hole side.

In this embodiment, the inner cylinders 2.2' constructed as described above are arranged oppositely to each other in the outer cylinder l. In FIG. 1, the opening ends 19 and 19' on the outlet side are butted against each other. At that time, remove O-ring 3 for sealing.
Step part 15.15' between corner inner cylinder body 2.2' and end
These O-rings allow the recess 1 of the inner cylindrical body 2 to
3 and groove 20, and recess 13' and groove 20' of inner cylinder 2'.
and are partitioned into mutually independent air passages 4.4'. The two partitioned air passages 4.4' each communicate directly with the compressed air intake 5.5' and with the interior of the inner cylinder 2.2' via the injection nozzle small hole 9.9'. The nine compressed air intakes L+5.5' communicate with each other, for example, as shown in FIG.
Connect to the air outlet. On the other hand, as shown in FIG. 3, one of the two trumpet tubes 7.7° has
It is connected to the supply/discharge port 25 of the lower iron 30 via a pipe 1824.

Now, when the solenoid valve 21 belonging to the inner cylinder body 2 on the right side in FIG. recess lO
is ejected. Since the small hole 9 is provided diagonally toward the opening end 19 of the inner cylinder 2 on the outlet side, the inner cylinder 2
The air blown inward has a directionality toward the inner cylinder 2'. The ejected air is guided by the inclined surface 12 of the four parts 10 and escapes at high speed in the direction of the trumpet tube 7' on the left side of FIG. As a result, the air inside the inner cylinder 2 becomes a negative pressure on the right side of the small hole 9, and the air flows in the direction of the arrow Pl through the trumpet tube 7. Therefore,
As long as compressed air continues to be injected from the small hole 9, air is taken in from the trumpet tube 7 side and exhausted from the trumpet tube 7' side, as shown by arrow PI. Therefore, air can be supplied to the supply/discharge port 25.

Conversely, the solenoid valve 22 belonging to the inner cylinder 2' on the left side in FIG.
, the compressed air is in turn ejected obliquely into the inner cylinder 2° through the small hole 9' directed toward the side of the inner cylinder 2, and guided to the inclined surface 12' of the recess 10'. Then, it exits at high speed in the direction of the trumpet tube 7 on the right side of FIG. As a result, the left side inside the inner cylinder 2' becomes negative pressure, and air flows in the direction of arrow P2 through the trumpet tube 7'.
As long as compressed air continues to be injected from the trumpet tube 7, as shown by arrow P2, air is taken in from the trumpet tube 7 side, and the trumpet tube 7
It is expelled from the side. Therefore, air can be vacuumed from the supply/discharge [J25].

In this way, the air supply/exhaust switching device 40 of the present invention has the following features:
By simply controlling which of the left and right inner cylindrical bodies 2.2'' compressed air is injected from, the same pipe line can be switched between two states: intake and exhaust.

The upper trowel 30 shown in FIG. 3 is configured so that the direction of the upper trowel can be rotated by 180 # within a horizontal plane when the upper trowel (not shown) is in the open position. This upper iron plate 30 has a flat and elongated iron body with chambers 32 and 33 formed above and below an upper iron plate 31, and a protruding position slightly shifted to one side from the center of the lower surface of the upper iron plate 31. It has a hollow boss part 34, and the boss part 34 is fixed to the machine frame 35.
Further, it is rotatably fitted into a hollow support column 36. The above-mentioned supply/discharge port 25 is provided at the lower end of this hollow support column 36, and the upper opening of the hollow boss portion 34 is connected to the upper chamber 32.
I am communicating with you. The lower chamber 33 has a steam inlet 3
3A is provided, and this lower chamber 33 is connected to the boss part 3.
4 and communicates with the steam outlet 33B through a passage between the cylinder 37 and the boss portion 34. Therefore, the upper trowel spray 31 is heated to an appropriate temperature by the steam in the lower chamber 33.

An example of a garment pressing procedure is as follows.

First, to press the clothes, which involves spraying steam onto the clothes on the upper trowel 30 and pressing the clothes, 1 - the trowel is closed with respect to the upper trowel 30 0, then 1: the trowel is opened.

Before and after this opening operation, the air supply/exhaust switching device 40
Open the solenoid valve 21 to draw air into the supply/discharge port 25.

This sent air enters the -side chamber 32, is heated while passing along the upper trowel plate 31, becomes hot air, and blows out from the upper trowel to dry the clothes.

The garment thus has a soft finish. Note that it is preferable to open the hot air solenoid valve 21 immediately before the opening operation of the upper trowel, in order to avoid a period in which the upper trowel is opened and the clothes are cooled by the outside air. Next, the solenoid valve 21 of the air supply/exhaust switching device 40 is closed, the solenoid valve 21 is opened, and the air is vacuumed through the supply/exhaust port 25 . Air is drawn through the clothing and upper chamber 32 to dry the clothing.

In this embodiment, the air is converted into hot air after it exits the air supply/exhaust switching device 40, that is, at the upper trowel 30, but the air itself entering the air supply/exhaust switching device 40 has already been converted into hot air. It can also be heated. In addition, if you want to send air only in one direction, for example, if you want to supply air to the upper trowel of a clothing press machine, as shown in Fig. It is sufficient to insert only the body 2' and connect the trumpet tube 7 to eliminate air loss.

(Effects of the Invention) As described above, the air supply/exhaust switching device of the present invention has two inner cylinder bodies arranged one after the other inside the frame body having a cylindrical through hole, An independent air passage continuous in the circumferential direction is formed between each inner cylindrical body and the frame body, and a compressed air intake port for each air passage is provided in the frame body, and each inner cylinder The body is provided with a small hole extending from the air passage on the outer periphery of the inner cylinder into the inner cylinder at an angle in the axial direction toward different opening ends of the inner cylinder. A concave portion is formed such that the opening II of the small hole belonging to the body is located at the step part and a tapered slope is formed in front of the opening of the small hole, and the injection is made from the small hole of each inner cylinder. The air inside the outer and inner cylinders can be moved in opposite directions depending on the direction of the compressed air.

By simply injecting compressed air from which side of the inner cylindrical nozzle, the needles in the same pipe can be switched from one side to the other, or in the opposite direction. There is no need to divide the pipe line into two branches as in the past, and an extremely compact and inexpensive air supply/exhaust switching device is provided. Therefore, by connecting the air supply/exhaust switching device of the present invention to the supply/discharge port of a clothes press, it is possible to easily switch between hot air blowing and vacuum in the clothes press.

[Brief explanation of drawings]

FIG. 1 is a sectional view of an embodiment of the air supply/exhaust switching device of the present invention, FIG. 2 is a sectional view of an inner cylinder as a nozzle body, and FIG. 3 is the air supply/exhaust switching device of the present invention. FIG. 4 is a cross-sectional view showing a configuration in which air is supplied only in one direction. l...Frame body (outer cylindrical body)? , 2'... Nozzle body (inner cylindrical body) 4.4゛...
・Air passage 5.5'...Compressed air intake lower, 7°
...Trumpet tube 9.9°...Small hole 1O1to'...
・Concave portion 21.22... Solenoid valve 23... Compressed air source 24... Pipe line 25... Supply/discharge port 40... Upper trowel
140...Air supply/exhaust switching device

Claims (1)

[Claims] Two inner cylindrical bodies are arranged one after the other in the through hole of a frame body having a cylindrical through hole, and there is a circumferentially continuous independent part between each inner cylindrical body and the frame body at the axially intermediate portion. The frame body is provided with a compressed air intake port for each air passage, and each inner cylinder has a small hole extending from the air passage on the outer periphery of the inner cylinder into the inner cylinder. The inner cylinder is provided obliquely in the axial direction toward the opening end of the inner cylinder, and on the inner surface of each inner cylinder, the opening of the small hole belonging to the inner cylinder is located in the stepped part, and the small hole has a tapered shape in front of the opening of the small hole. The four parts are formed so that an inclined surface is formed, and the air inside the outer and inner cylinders can be moved in opposite directions depending on the direction of the compressed air injected from the small holes of each inner cylinder. Air supply/exhaust switching device.