JP7250531B2 - Branch hose manufacturing device and manufacturing method - Google Patents

Description

TECHNICAL FIELD The present invention relates to an apparatus and method for manufacturing a branch hose in which a branch pipe portion is branched from a hose body having both ends opened.

Industrial products such as automobiles and buildings such as houses are equipped with hoses that circulate fluids such as air in various places. Adopted. For example, in automobiles, such a branch hose is adopted as an air cleaner hose for engine intake, and intake noise is reduced by installing a silencer such as a resonator that applies Helmholtz's resonance principle to the branch pipe branched from the hose body. It is known to reduce noise and increase quietness. Such a branch hose is formed by injection molding so that the branch pipe part branches from the hose body in a state where the branch proximal end side is closed (non-communication state) with rubber, synthetic resin, etc. It is installed in an opening processing device, and a tool such as a hole saw provided in the hole processing device is inserted into the branch pipe portion to perform hole processing in the blocking portion blocking the branch pipe portion, thereby forming a hose body and a branch pipe portion. are communicated (for example, Patent Document 1).

Japanese Patent No. 3440181

Such a branch hose is required to reliably communicate between the hose body and the branch pipe portion by perforating in order to exhibit its function. For this reason, after drilling, the hose body and the branch pipe are separated by irradiating the drilled edges with a laser beam from a laser sensor or the like from the end opening of the hose body of the branch hose removed from the drilling device. Since the communication state with the part is inspected, the number of man-hours for manufacturing the branch hose increases, and there is a problem that an inspection device such as a laser sensor is required in addition to the hole punching device.

That is, an object of the present invention is to provide a branch hose manufacturing apparatus and a manufacturing method capable of efficiently manufacturing a branch hose in which a hose main body and a branch pipe portion communicate with each other.

In order to overcome the above problems and achieve the intended purpose , the first aspect of the invention is
A branch pipe part is branched from a hose body with both ends open, and the branch proximal end side of the branch pipe part is blocked by a block part. A manufacturing device for manufacturing a branch hose communicating with a pipe portion,
a holding portion that holds the hose body in a processing posture;
a hole punching portion that is provided to be insertable into and removable from the branch pipe portion of the hose body held by the holding portion and that punches the closing portion that closes the branch pipe portion;
an air blowing portion for blowing air from the branch pipe portion toward the internal space of the hose body;
A detection unit that detects the air pressure in the internal space of the hose body,
After piercing the blocking portion by the piercing processing portion, air is blown into the branch pipe portion from the air blowing portion in a state where the openings at both end portions of the hose body are held by the holding portion. , wherein the air pressure in the internal space is detected by the detection unit.
In this way, by blowing air from the branch pipe after the hole-making process and detecting the air pressure in the internal space of the hose body, it is possible to inspect the state of communication between the hose body and the branch pipe. It becomes possible to discriminate a hole opening failure in which communication with the pipe portion is not achieved. For this reason, the inspection after the drilling process can be omitted or simplified, and the manufacturing efficiency of the branch hose can be improved.

A second form of the invention is
a second air blowing part for blowing air into the internal space of the hose body from one of the openings at both ends;
The gist is that the detector is configured to detect the air pressure in the internal space when air is blown from the air blowing portion and the second air blowing portion.
Thus, by providing the second air blowing part for blowing air into the inner space of the hose body, it is possible to inspect the airtightness of the workpiece before the hole opening process, thereby improving the manufacturing efficiency of the branch hose. can be done. In addition, by using a common detection unit to detect the airtight state before and after the hole punching process, the device can be simplified.

A third form of the invention is
The holding part is configured to hold the hose body such that the openings at both ends are positioned vertically in the working posture,
A communication opening that opens vertically and communicates with the internal space is formed in a lower holding portion that holds the lower end of the hose body in the holding portion, and the communication opening can be opened and closed by an opening and closing portion. configured,
The communication opening is opened after the air pressure in the internal space is detected by the detection unit by blowing air into the branch pipe while the communication opening is blocked by the open/close unit. is the gist.
In this way, by opening and closing the communication opening formed in the lower holding portion that holds the lower end of the hose body with the opening and closing portion, it is possible to inspect the communication state of the branch hose after the hole opening process. After the inspection, chips generated by the drilling process can be discharged, and the drilling process can be performed efficiently.

A fourth form of the invention is
The holding portion includes an upper holding portion that holds the hose body positioned on the upper side in the working posture so as to close the opening, and a lower holding portion that holds the hose body positioned on the lower side in the working posture so as to close the opening. The hose body is held by sandwiching the hose body from above and below by the upper and lower holding parts, and the hose body can be held by relatively separating the upper and lower holding parts. configured to be released,
The lower holding portion is supported on the upper surface side of the base through an elastic member having elasticity to form a gap between the base and the lower holding portion,
The opening/closing part is movable between a closed position positioned in a gap between the base and the lower holding part and facing the lower side of the communication opening, and an open position retracted from the lower side of the communication opening. configured,
With the opening/closing portion moved to the closed position, the upper holding portion and the lower holding portion are moved relatively close to each other to hold the hose body from above and below, thereby deforming the elastic member. The gist of the present invention is that the lower holding part pressed down while opening is brought into close contact with the opening/closing part to block the communication opening.
In this way, when the hose body is sandwiched and held from above and below by the upper holding part and the lower holding part, the support supporting the lower end of the hose body is pushed down and comes into close contact with the opening and closing part. The lower opening can be closed. When the upper holding part and the lower holding part are separated from each other, the support supporting the lower end of the hose body is pushed up, and the opening/closing part can be moved to the open position.

In order to overcome the above problems and achieve the intended purpose , the fifth aspect of the invention is
A hose body and a branch pipe are separated from each other by opening a hole in the blocked part for the workpiece in which the branch pipe part branches from the hose body with both ends open and the branch proximal end side of the hose body is blocked by the blocked part. A manufacturing method for manufacturing a branch hose communicating with a part,
a holding step of holding the hose body in a working posture;
a hole-making step of inserting a hole-making portion into the branch pipe portion of the held hose body and making a hole in the blocking portion that closes the branch pipe portion so as to allow the hose body and the branch pipe portion to communicate;
an air blowing step of blowing air from the branch pipe portion toward the internal space of the hose main body in a state in which the hole punched portion is inserted into the branch pipe portion;
In the air blowing step, air is blown into the inner space of the hose body from the branch pipe portion while the openings at both ends of the hose body are held closed, and the air pressure in the inner space of the hose body is detected. The gist is to
In this way, by blowing air into the inside of the branch pipe after the hole opening process and detecting the air pressure in the internal space of the hose body, it is possible to inspect the state of communication between the hose body and the branch pipe. It is possible to discriminate a hole opening failure in which the branch pipe portion is not communicated with the branch pipe portion. For this reason, the inspection after the drilling process can be omitted or simplified, and the manufacturing efficiency of the branch hose can be improved.

A sixth form of the invention is
In the holding step, the hose body is held in a processing posture in which the openings at both ends are positioned vertically,
In the air blowing step, a communication opening formed to communicate with the internal space in a lower holding portion that is held so as to block the opening of the hose body located on the lower side in the working posture is closed by an opening/closing portion. air is blown into the inside of the branch pipe portion, and after the air pressure in the internal space is detected, the communication opening is opened.
In this way, by opening and closing the communication opening formed in the lower holding portion that holds the lower end of the hose body with the opening and closing portion, it is possible to inspect the communication state of the branch hose after the hole opening process. After the inspection, chips generated by the drilling process can be discharged, and the drilling process can be performed efficiently.

According to the present invention, it is possible to efficiently manufacture a branch hose in which the hose main body and the branch pipe portion communicate with each other.

BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing which shows roughly the manufacturing apparatus of the branch hose which concerns on this invention in a cross section. It is explanatory drawing which shows roughly a lower side holding part and a lower side base in a cross section. It is a top view which shows roughly the lower side holding part, a lower side base, and a shutter apparatus. It is an explanatory view showing a punching device roughly. BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing which shows roughly the branch hose formed by the manufacturing apparatus which concerns on this invention, and a manufacturing apparatus. FIG. 4 is an explanatory view showing manufacturing steps of a method for manufacturing a branch hose according to the present invention, in which (a) and (b) show holding steps, and (c) shows a state in which air is blown from the air blowing hole of the upper holding portion. show. BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing which shows the manufacturing process of the manufacturing method of the branch hose based on this invention, Comprising: (a) shows a hole opening process, (c) shows an air blowing process. FIG. 4 is an explanatory drawing showing manufacturing steps of a method for manufacturing a branch hose according to the present invention, in which (a) shows a discharging step and (c) shows a taking-out step.

BEST MODE FOR CARRYING OUT THE INVENTION Next, preferred embodiments of a branch hose manufacturing apparatus and manufacturing method according to the present invention will be described below with reference to the accompanying drawings. In this embodiment, as shown in FIG. 5, it can be suitably used as an air cleaner hose that can be attached by fitting a silencer R such as a resonator to a branch pipe portion 102 branched from a hose body 101 with both ends open. A configuration for manufacturing the branch hose 110 will be described as an example. This branch hose 110 is in a state before processing by the manufacturing apparatus and manufacturing method of the branch hose 110 according to the present invention, and the branch base end side of the branch pipe portion 102 branching from the hose body 101 is blocked by the blocking portion 103. The hose main body 101 and the branch pipe portion 102 are formed in a non-communicating state, and the closed portion 103 is perforated by the apparatus and method for manufacturing the branch hose 110 according to the present invention. The non-communication hose (processed product) 100 in which the branch proximal end side of the branch pipe portion 102 is closed with the closing portion 103 is molded by conventionally known injection molding using synthetic resin or rubber as a raw material.

As shown in FIG. 1 , the apparatus for manufacturing a branch hose 110 according to the embodiment includes holding portions 11 and 21 that hold a hose body 101 in a predetermined working posture, and a branching portion of the hose body 101 held by the holding portions 11 and 21 . A hole punching portion 51 which is provided to be insertable into and removable from the pipe portion 102 and which forms a hole in the blocking portion 103 blocking the branch pipe portion 102, and from the branch pipe portion 102 toward the internal space 101a of the hose main body 101. An air blowing portion (air blowing hole 52 to be described later) for blowing air is provided. is configured to be capable of blowing In this embodiment, the holding portions 11 and 21 are configured to hold the openings at both ends of the hose body 101 in a working posture in which they are positioned vertically. Explanation will be made by pointing up and down.

The holding portions 11 and 21 are composed of an upper holding portion 11 that holds the opening end side of the hose body 101 located on the upper side in the processing posture, and a lower holding portion that holds the opening end side of the hose body 101 located on the lower side in the processing posture. The upper holding portion 11 and the lower holding portion 21 sandwich and hold the hose body 101 from above and below.

The upper holding portion 11 includes an upper support portion 12 that abuts and supports the opening end portion located above the hose body 101 , and an upper end side opening (upper end side opening) of the hose body 101 that protrudes downward from the upper support portion 12 . ) is provided with an upper insertion part 13 that can be inserted into the body. The upper insertion portion 13 is formed in a shape that substantially matches the opening shape of the upper end side opening of the hose body 101 , and the outer peripheral surface of the upper insertion portion 13 inserted into the upper end side opening is in close contact with the inner peripheral surface of the hose body 101 . It is designed to

Similarly, the lower holding portion 21 includes a lower support portion 22 that abuts and supports the opening end located on the lower side of the hose body 101 , and a lower support portion 22 that protrudes upward from the lower support portion 22 to support the lower end of the hose body 101 . and a lower insertion portion 23 that can be inserted into the side opening (lower end side opening). The lower insertion portion 23 is formed in a shape that substantially matches the opening shape of the lower end side opening of the hose body 101 , and the outer peripheral surface of the lower insertion portion 23 inserted into the lower end side opening is the inner peripheral surface of the hose body 101 . It is designed to adhere to That is, by inserting the upper insertion portion 13 into the upper end opening of the hose body 101, the upper end side of the hose body 101 is held by the upper holding portion 11 so as to block the upper end opening, and the lower end side opening of the hose body 101 is held. By inserting the lower insertion portion 23 into the hose body 101, the lower end side of the hose body 101 is held by the lower holding portion 21 so as to close the lower end opening.

Further, the upper holding portion 11 is formed with an air blowing hole (second air blowing portion) 14 to which a pipe H1 connected to the air pump P is connected. The air blowing hole 14 of the upper holding part 11 opens into the internal space 101a of the hose main body 101 with the upper inserting part 13 inserted into the upper end side opening, and the air sent from the air pump P is discharged. The air is blown into the internal space 101 a of the hose body 101 from the air blow hole 14 of the upper holding portion 11 . A switching device CH such as an electromagnetic valve is attached to the pipe H1 connected to the air pump P, and the switching device can switch between blowing and blocking of air. An air pressure sensor SW is attached between the switching device CH of the pipe H1 connected to the air pump P and the upper holding portion 11, and is configured to detect the air pressure in the internal space 101a of the hose body 101.

A communicating opening 27 is formed in the lower holding portion 21 so as to penetrate vertically. The communicating opening 27 is formed in a shape and size that allow chips M generated by the boring process to the closing portion 103 to pass through, and is inserted into the hose body 101 with the lower inserting portion 23 inserted into the opening on the lower end side. It is open to the internal space 101a of the. That is, in a state in which the lower end side of the hose body 101 is held by the lower holding portion 21, chips M generated by the drilling process can be dropped downward from the communication opening portion 27 and discharged. The communication opening 27 is preferably made as large as possible so that the chips M can easily pass through.

The upper holding part 11 and the lower holding part 21 are attached to bases 31 and 32 that are movable so as to move relatively close to each other and separate from each other. ing. That is, by moving the upper holding portion 11 and the lower holding portion 21 relatively close to each other and separating them, both holding portions 11 and 21 are relatively separated to allow the hose main body 101 to be attached and detached. It can be switched to a holding state in which the portions 11 and 21 are relatively close to each other and hold the hose body 101 from above and below. In this embodiment, the lower holding part 21 is attached to the upper surface side of the lower base 32 which is fixedly installed, and is configured to be vertically movable (liftable) above the lower base 32. The upper holding portion 11 is attached to the lower surface side of the upper base 31 so as to face the lower support portion 22 . It is constructed so that the platform 31 can be raised and lowered.

As shown in FIGS. 1 to 3, on the upper surface of the lower base 32, an installation portion 33 for installing the lower holding portion 21 is supported so as to surround the outer peripheral side of the lower holding portion 21. A wall 34 is provided, and upwardly projecting guide projections 35 are provided at a plurality of locations (two locations in the embodiment). A guide hole 24 is provided in the lower holding portion 21 so as to open vertically in accordance with the formation position of the guide projection 35 . The lower holding part 21 is vertically movable. The position, shape, number, etc. of the supporting wall 34 and the guide projections 35 are not limited to this, and can be arbitrarily determined. In addition, the lower base 32 (installation portion 33) is formed with a discharge hole portion 36 corresponding to the formation position of the communication opening portion 27 of the lower holding portion 21. It is configured so that chips M can be discharged below the lower base 32 .

A resilient coil spring (elastic member) 38 is interposed between the installation portion 33 and the lower surface of the lower holding portion 21 in the guide protrusion 35 . The lower holding portion 21 is placed on the upper surface side of the lower base 32 (installation portion 33) via the coil spring 38 so as to form a gap S between the (installation portion 33) and the lower surface of the lower holding portion 21. Supported. That is, when a force acts to push down the lower holding portion 21 from above, the lower holding portion 21 moves downward to approach the installation portion 33 while the coil spring 38 is compressed and deformed, and the force acts. Since the gap S is eliminated, the lower holding portion 21 is moved upward by the elastic force of the coil spring 38 to form a predetermined gap S. As shown in FIG. Reference numeral 35a in FIG. 2 denotes a locking portion provided at the projecting end of the guide protrusion 35, and the locking portion 35a engages with the upper surface side of the lower holding portion 21 to hold the lower side. The guide protrusion 35 is prevented from slipping out of the guide hole 24 of the portion 21.例文帳に追加

A shutter device 40 is provided on the lower base 32 and is configured to open and close the communication opening 27 of the lower holding portion 21 by the shutter device 40 . The shutter device 40 is driven by a drive means 42 to position the shutter member (opening/closing portion) 41 in the gap S between the lower base 32 (installation portion 33) and the lower holding portion 21, thereby opening the communication opening. 27 and an open position retracted from below the communication opening 27. By moving the shutter member 41 to the closing position, the communication opening of the lower holding portion 21 is closed. 27 is closed, and by moving the shutter member 41 to the open position, the communication opening 27 of the lower holding portion 21 communicates with the discharge hole 36 of the lower base 32 . As the driving means 42, conventionally known various means such as a motor and a cylinder can be adopted. In this embodiment, as shown in FIG. 3, a support wall 34 is formed so as to partially surround the outer peripheral side of the lower holding portion 21, so that the space between the installation portion 33 and the lower surface of the lower holding portion 21 is reduced. A shutter insertion portion 44 is provided through which the gap S communicates with the outside of the installation portion 33 , and a flat plate-shaped shutter member 41 that can be inserted into the gap S is inserted into the gap S via the shutter insertion portion 44 . The shutter member 41 is configured to move between the closed position and the open position by moving to release.

In addition, on the lower surface of the lower holding part 21, a holding part sealing material (sealing material) 25 made of rubber or the like is provided in an annular shape so as to surround the communication opening 27, and pushes down the lower holding part 21. When the shutter member 41 is closed, the holding portion sealing material 25 comes into contact with the upper surface of the shutter member 41 so that the lower holding portion 21 is brought into close contact with the shutter member 41 to block the communication opening 27 .

A punching device 50 having a punching portion 51 is supported on the upper base 31 of the embodiment via a bracket (not shown). is designed to move up and down. As shown in FIG. 4, the piercing device 50 includes a piercing portion 51 for piercing the blocking portion 103 blocking the branch pipe portion 102, a rotation driving portion 55 for rotating the piercing portion 51, A drive means 61 is provided for moving the perforating portion 51 in the direction of insertion into and removal from the branch pipe portion 102 of the hose body 101 held by the upper holding portion 11 and the lower holding portion 21 . In the embodiment, the drive means 61 moves the case body 54 that supports the hole-forming portion 51 and the rotation drive portion 55 , so that the hole-forming portion 51 is retracted to be positioned outside the branch pipe portion 102 of the hose body 101 . , and an insertion position where the piercing portion 51 is positioned inside the branch pipe portion 102 . As the driving means 61, conventionally known various means such as a motor and a cylinder can be adopted.

The piercing portion 51 is formed in a bottomed cylindrical shape with an opening on the tip end side to be inserted into the branch tube portion 102 , and a blade portion 51 a for piercing the closing portion 103 is formed at the tip end portion. The blade portion 51a is formed to have an outer diameter that substantially matches the inner diameter of the branch pipe portion 102, and is inclined so as to expand from the inner peripheral tip side of the cylindrical hole punching portion 51 toward the outer peripheral tip side. It is attached so that the closure portion 103 can be pierced in the vicinity of the branch proximal end portion of the branch tube portion 102 .

The rotation driving section 55 is configured to rotate a shaft section 57 rotatably supported by the case body 54 via a bearing 56 such as a bearing, by driving means 58 such as a motor. One end of the shaft portion 57 protrudes from the case body 54 , and the bottom portion of the drilled portion 51 is connected to the end portion of the shaft portion 57 protruding from the case body 54 to form the shaft. By rotating the portion 57, the punching portion 51 is rotated. Here, as the transmission mechanism that connects the shaft portion 57 and the driving means 58, conventionally known mechanisms such as gears, cams, and link mechanisms can be adopted. One is attached to the other end of the shaft portion 57 and the other pulley 59 is rotated by the drive means 58 .

A through hole 57a is formed in the shaft portion 57 so as to penetrate in the longitudinal direction, and the through hole 57a is provided at the end portion of the shaft portion 57 opposite to the mounting end portion of the drilled portion 51. A rotary joint 60 is attached so as to communicate, and a pipe H2 leading to the air pump P is connected to the rotary joint 60 . An air blowing hole (air blowing portion) 52 is formed in the bottom portion of the punched portion 51 so as to pass therethrough in alignment with the through hole 57 a of the shaft portion 57 . That is, the air blowing hole 52 of the perforating portion 51 is opened inside the branch pipe portion 102 in a state in which the perforating portion 51 is inserted into the branch pipe portion 102. The air is blown into the branch pipe portion 102 from the air blowing hole 52 of the hole punching portion 51, and after the hole is opened in the blocking portion 103, the air is blown from the branch pipe portion 102 toward the inner space 101a of the hose body 101. It is designed to be blown in. A switching device CH such as an electromagnetic valve is attached to the pipe H2 connected to the air blowing hole 52 of the drilling portion 51 so that the switching device CH can switch between air blowing and air blocking. In the embodiment, the piping H2 corresponding to the air blowing hole 52 of the hole punching part 51 and the piping H1 corresponding to the air blowing hole 14 of the upper holding part 11 are configured to be connected to the same switching device CH. The switching device CH switches the air from the air pump P to the pipe H1, to the pipe H2, to both the pipe H1 and the pipe H2, and to any of the pipes H1 and H2. It is designed to be able to switch to a non-existent state (blocked state). In addition, the air pressure sensor SW is not attached between the switching device CH of the pipe connected to the air pump P and the hole punching portion 51, and air is directed from the branch pipe portion 102 toward the internal space 101a of the hose body 101. The air pressure in the internal space 101a of the hose body 101 can be detected by the air pressure sensor SW attached to the pipe H1 connected to the air blowing hole 14 of the upper holding portion 11 when the air is blown.

Further, a processing portion sealing material (sealing material) 53 formed of rubber or the like is provided in the hole processing portion 51 so as to extend over the entire circumference of the outer peripheral surface, and the branch pipe portion 102 is drilled. When the processed portion 51 is inserted, the processed portion sealing material 53 is configured to adhere to the inner peripheral surface of the branch pipe. Here, the length from the tip of the piercing portion 51 to the processing portion sealing material 53 is configured to be shorter than the pipe length of the branch pipe portion 102, and the length of the piercing portion 51 inserted into the branch pipe portion 102 is reduced. Before the tip reaches the closed portion 103, the processed portion sealing material 53 is brought into close contact with the inner peripheral surface of the branch pipe.

Next, a method for manufacturing the branch hose 110 according to the embodiment will be described using the manufacturing apparatus described above.

First, a drive device AC such as a cylinder connected to the upper base 31 is driven to move the upper base 31 upward, and the upper holding portion 11 and the lower holding portion 21 are separated from each other in a detachable state. do. In this state, the hose main body 101 of the non-communication hose 100 is inserted into the lower insertion part 23 of the lower holding part 21 into the opening at one end (lower end side opening), and the lower open end of the hose main body 101 is inserted. is supported by the lower supporting portion 22 of the lower holding portion 21 (FIG. 6(a)). In this state, as shown in FIG. 6B, the driving device AC of the upper base 31 is driven to lower the upper base 31, and the upper holding portion 11 is inserted into the upper opening of the hose body 101. The portion 13 is inserted, and the upper opening end of the hose body 101 is abutted and supported by the upper supporting portion 12 of the upper holding portion 11 (holding step).

Further, the driving device is driven to lower the upper base 31 while the shutter member 41 is positioned at the closed position located in the gap S between the lower base 32 (installation portion 33) and the lower holding portion 21. Drive AC. As a result, a force acts to push down the lower holding portion 21 from above through the hose body 101 , and the lower holding portion 21 is moved downward while the coil spring 38 is compressed and deformed. The communication opening 27 of the lower holding portion 21 is closed by the shutter member 41 in contact. At this time, the holding portion sealing material 25 of the lower holding portion 21 is pressed against the shutter member 41, so that the lower holding portion 21 is brought into close contact with the shutter member 41 (FIG. 6(c)). It should be noted that the shutter member 41 may be moved to the closed position at any timing before the lower holding portion 21 is pushed down from above. As a result, the inner space 101a of the hose body 101, which is held in a processing posture in which the openings at both ends are positioned vertically, is aligned with the outer peripheral surface of the upper insertion portion 13 and the outer peripheral surface of the lower insertion portion 23, respectively. The shutter member 41 closes the communication opening 27 of the lower holding portion 21 and closes the shutter member 41, thereby forming a highly airtight state.

In this state, as shown in FIG. 6(c), the switching device CH is operated to blow air into the internal space 101a of the hose body 101 from the air blowing hole 14 of the upper holding portion 11, and a predetermined amount of air is blown. After the air is blown in, the switching device CH is operated to stop the air blowing, and the air pressure in the internal space 101a of the hose body 101 is detected by the air pressure sensor SW to perform an airtightness inspection of the hose body 101 (inspection step). That is, by blowing air into the internal space 101a of the hose body 101 with improved airtightness, if the air pressure detected by the air pressure sensor SW is less than a predetermined reference value, the hose body 101 will be broken, such as a hole. It can be determined that there is a high possibility that In this way, by performing an airtightness inspection of the hose body 101 before performing the hole-making process (before the hole-making process), it is possible to prevent the defective product from being subjected to unnecessary processing, so that the branch hose 110 can be Manufacturing efficiency can be improved.

Then, as shown in FIG. 7( a ), the drive means 61 of the hole punching portion 51 is driven to insert the hole punching portion 51 from the opening of the branch pipe portion 102 of the hose body 101 , and the rotary drive portion 55 is rotated. By driving the driving means 58 provided in the piercing section 51 to rotate the piercing section 51 to pierce the blocking section 103 that blocks the branch pipe section 102, the hose main body 101 and the branch pipe section 102 are communicated (piercing step). . Here, since the length from the tip of the drilled portion 51 to the processed portion sealing material 53 is configured to be shorter than the pipe length of the branch pipe portion 102, the drilled portion 51 inserted into the branch pipe portion 102 The processed portion sealing material 53 comes into close contact with the inner peripheral surface of the branch pipe before the tip of the pipe reaches the closing portion 103 .

Here, a lubricant may be applied to the processed portion sealing member 53 before inserting the drilled portion 51 into the branch pipe portion 102 . Here, by applying a lubricant to the processing portion sealing material 53, the insertion of the hole processing portion 51 into the branch pipe portion 102 and the rotation of the hole processing portion 51 within the branch pipe portion 102 can be performed smoothly. be able to. In addition, since the lubricant of the processed portion sealing material 53 is applied to the inner peripheral surface of the branch pipe portion 102 in the process of opening the closed portion 103 of the branch pipe portion 102, the branch hose 110 that has opened the closed portion 103 does not move. When the silencer R is attached to the branch pipe portion 102, there is an advantage that it becomes possible to attach the silencer R and the branch pipe portion 102 without re-applying a lubricant. Here, the lubricant is preferably one that loses its lubricating properties with the lapse of time. For example, alcohol or water that naturally dries with the lapse of time can be preferably used. By using such a dry lubricant, the parts attached to the branch pipe portion 102 of the branch hose 110 can be prevented from loosening, and adhesion of dust and the like can be suppressed.

Then, as shown in FIG. 7B, after the hole-making process, air is blown from the air blowing hole 52 of the hole-making portion 51 in a state in which the hole-making portion 51 is inserted into the branch pipe portion 102. The switching device CH is operated, and the switching device CH is operated so as to stop blowing air after blowing a predetermined amount of air (air blowing step). Here, the blowing of air is performed in a state in which the processed portion sealing material 53 is in close contact with the inner peripheral surface of the branch pipe.

Since the branch pipe portion 102 communicates with the internal space 101a of the hose main body 01 by the hole punching process, the inside of the hose main body 101 can be By detecting the air pressure in the space 101a with the air pressure sensor SW, it is possible to perform an airtightness inspection of the hose body 101 after the hole punching process. That is, when the air pressure detected by the air pressure sensor SW is less than the reference value, it means that the hole opening process is not sufficiently performed and the branch pipe portion 102 and the internal space 101a of the hose main body 101 are not in communication. can be discriminated. In this way, by using the blowing of air from the branch pipe portion 102, the state of communication between the hose main body 101 and the branch pipe portion 102 is inspected (ventilation inspection) after the hole making process (after the hole making process). ), the manufacturing efficiency of the branch hose 110 can be improved. Further, since the perforation inspection can be simultaneously and continuously performed while the perforation processing portion 51 is inserted into the branch pipe portion 102 by the perforation processing, the work time from the perforation processing to the completion of the permeation inspection can be shortened. can be achieved. In addition, by simultaneously (continuously) performing the perforating process and the ventilation inspection, it is possible to omit or simplify the inspection after the perforating process, thereby increasing the production efficiency of the branch hose.

Next, the driving device AC is driven so as to raise the upper base 31 with the hole-punching portion 51 inserted into the branch pipe portion 102, and the lower holding portion 21 pushed down through the hose main body 101 is removed from the coil. After the shutter member 41 is moved to a position separated from the shutter member 41 by the elastic force of the spring 38, the shutter member 41 is moved to the open position to open the communication opening 27 of the lower holding portion 21, and the chips generated by the drilling process are removed. M is discharged (discharging process). At this time, as shown in FIG. 8A, air is blown in for a predetermined time (for example, 5 seconds) from each of the air blowing holes 14 of the upper holding portion 11 and the air blowing holes 52 of the perforating portion 51. It's like As a result, the chips M caught on the uneven part of the inner peripheral surface of the hose body 101 can be discharged, and the chips M can be effectively prevented from remaining in the internal space 101a of the hose body 101.例文帳に追加

After that, the hole-making portion 51 is retracted so as to extract the hole-making portion 51 from the branch pipe portion 102, and the upper base 31 is raised to make it detachable. can be taken out of the branch hose 110 that communicates with (FIG. 8(b)).

As described above, according to the manufacturing apparatus and manufacturing method of the branch hose 110 according to the present invention, the air pressure in the internal space 101a of the hose main body 101 is detected by blowing air into the inside of the branch pipe portion 102 after the boring process. , the state of communication between the hose main body 101 and the branch pipe portion 102 can be inspected, and it is possible to determine a hole opening failure in which the hose main body 101 and the branch pipe portion 102 are not in communication. For this reason, the inspection after the drilling process can be omitted or simplified, and the manufacturing efficiency of the branch hose 110 can be improved.

Further, by providing an air blowing hole 14 in the upper holding part 11 so that air can be blown into the internal space 101a of the hose body 101, it is possible to inspect the airtightness of the non-communicating hose 100 before hole punching. The manufacturing efficiency of the branch hose 110 can be improved. In addition, by using the common air pressure sensor SW to detect the inspection before and after the drilling process, the device can be simplified. Further, when the hose body 101 is sandwiched and held from above and below by the upper holding part 11 and the lower holding part 21, the lower holding part 21 supporting the lower end of the hose body 101 can be pressed down to bring it into close contact with the shutter member 41. Therefore, the airtightness in the hose can be improved, and the airtight state can be inspected with high accuracy.

Furthermore, by opening and closing the communication opening 27 formed in the lower holding portion 21 that holds the lower end of the hose body 101 with the shutter member 41, it is possible to inspect the airtightness of the branch hose 110 after the perforating process. In addition, after the inspection, the chips M generated by the drilling process can be discharged, and the drilling process can be performed efficiently.

(Change example)
The embodiment is not limited to the above-described embodiment, and can be modified as follows, for example.
(1) In the embodiment, the upper holding part 11 is moved toward and away from the lower holding part 21. However, the present invention is not limited to this. The base 31 is fixedly installed, and the lower base 32 to which the lower holding part 21 is attached is configured to move up and down, so that the lower holding part 21 approaches and separates from the upper holding part 11. You may make it move so that it may carry out. Moreover, it is also possible to move both the upper holding part 11 and the lower holding part 21 so as to approach and separate from each other.
(2) In the embodiment, the upper holding part 11 is attached to the upper base 31 that can move up and down, but the upper holding part 11 may be attached to a robot arm or the like.
(3) In the embodiment, the openings at both ends of the hose body 101 are positioned vertically in the working posture, but the openings at both ends of the hose body 101 may be positioned left and right. An appropriate working posture can be set according to the shape of the workpiece.
(4) In the embodiment, the chips M are discharged as they are by opening the shutter member 41, but the discharge of the chips M may be detected. Specifically, for example, by providing detection means such as a photoelectric sensor in accordance with the discharge hole portion 36 of the lower base 32, the chips M discharged through the discharge hole portion 36 can be detected by the detection means. It becomes possible. By directly detecting the discharged chips M in this way, it is possible to prevent the chips M from remaining in the internal space 101 a of the hose body 101 .
(5) In the embodiment, the shutter member 41 is configured to slide between the open position and the closed position, but the shutter member 41 may be configured to be inverted. By inverting the shutter member 41 in this manner, the chips M on the shutter member 41 can be more reliably discharged. It is also possible to attach a static eliminator to the shutter member 41 . By attaching the static eliminator, it is possible to effectively remove the chips M adhering to the shutter member 41 due to static electricity.

11 upper holding part (holding part), 14 air blowing hole (second air blowing part)
21 lower holding portion (holding portion), 27 communication opening, 38 coil spring (elastic member)
41 shutter member (opening/closing part), 51 hole processing part, 52 air blowing hole (air blowing part)
101 hose main body, 102 branch pipe portion, 103 blocking portion S gap, SW air pressure sensor (detection portion)

Claims (6)

A branch pipe part is branched from a hose body with both ends open, and the branch proximal end side of the branch pipe part is blocked by a block part. A manufacturing device for manufacturing a branch hose communicating with a pipe portion,
a holding portion that holds the hose body in a processing posture;
a hole punching portion that is provided to be insertable into and removable from the branch pipe portion of the hose body held by the holding portion and that punches the closing portion that closes the branch pipe portion;
an air blowing portion for blowing air from the branch pipe portion toward the internal space of the hose body;
A detection unit that detects the air pressure in the internal space of the hose body,
After piercing the blocking portion by the piercing processing portion, air is blown into the branch pipe portion from the air blowing portion in a state where the openings at both end portions of the hose body are held by the holding portion. 1. An apparatus for manufacturing a branch hose, wherein the air pressure in the internal space is detected by the detecting section. a second air blowing part for blowing air into the internal space of the hose body from one of the openings at both ends;
2. The apparatus for manufacturing a branch hose according to claim 1, wherein said detecting portion detects the air pressure in said internal space when air is blown from said air blowing portion and said second air blowing portion. The holding part is configured to hold the hose body such that the openings at both ends are positioned vertically in the working posture,
A communication opening that opens vertically and communicates with the internal space is formed in a lower holding portion that holds the lower end of the hose body in the holding portion, and the communication opening can be opened and closed by an opening and closing portion. configured,
The communication opening is opened after the air pressure in the internal space is detected by the detection unit by blowing air into the branch pipe while the communication opening is blocked by the open/close unit. Item 3. The apparatus for manufacturing a branch hose according to item 1 or 2. The holding portion includes an upper holding portion that holds the hose body positioned on the upper side in the working posture so as to close the opening, and a lower holding portion that holds the hose body positioned on the lower side in the working posture so as to close the opening. The hose body is held by sandwiching the hose body from above and below by the upper and lower holding parts, and the hose body can be held by relatively separating the upper and lower holding parts. configured to be released,
The lower holding portion is supported on the upper surface side of the base through an elastic member having elasticity to form a gap between the base and the lower holding portion,
The opening/closing part is movable between a closed position positioned in a gap between the base and the lower holding part and facing the lower side of the communication opening, and an open position retracted from the lower side of the communication opening. configured,
With the opening/closing portion moved to the closed position, the upper holding portion and the lower holding portion are moved relatively close to each other to hold the hose body from above and below, thereby deforming the elastic member. 4. The apparatus for manufacturing a branch hose according to claim 3, wherein the lower holding portion which is pushed down while opening is brought into close contact with the open/close portion so as to block the communication opening. A hose body and a branch pipe are separated from each other by opening a hole in the blocked part for the workpiece in which the branch pipe part branches from the hose body with both ends open and the branch proximal end side of the hose body is blocked by the blocked part. A manufacturing method for manufacturing a branch hose communicating with a part,
a holding step of holding the hose body in a working posture;
a hole-making step of inserting a hole-making portion into the branch pipe portion of the held hose body and making a hole in the blocking portion that closes the branch pipe portion so as to allow the hose body and the branch pipe portion to communicate;
an air blowing step of blowing air from the branch pipe portion toward the internal space of the hose main body in a state in which the hole punched portion is inserted into the branch pipe portion;
In the air blowing step, air is blown into the inner space of the hose body from the branch pipe portion while the openings at both ends of the hose body are held closed, and the air pressure in the inner space of the hose body is detected. A method for manufacturing a branch hose, characterized by: In the holding step, the hose body is held in a processing posture in which the openings at both ends are positioned vertically,
In the air blowing step, a communication opening formed to communicate with the internal space in a lower holding portion that is held so as to block the opening of the hose body located on the lower side in the working posture is closed by an opening/closing portion. 6. The method of manufacturing a branch hose according to claim 5, wherein air is blown into the inside of the branch pipe portion, and the communication opening is opened after the air pressure in the internal space is detected.

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