JP3179484U - Coupling device - Google Patents

Abstract

A coupling device capable of connecting / separating a first fluid passage and a second fluid passage which can improve the space-saving installation space.
A female joint 10 and a male joint 20 are provided. The female joint 10 is mounted in the first mounting hole 6 having the first valve seat 12, and the first valve body 13 having the first valve portion 14 and the compression for biasing the first valve body 13 toward the valve closing side. And a coil spring 15. The male joint 20 includes a valve case 21 having a second valve seat 22 made of an annular seal member 26, a second valve body 23 having a second valve portion 24, and biasing the second valve body 23 toward the valve closing side. And a compression coil spring 28 that urges the valve case 21. A first internal passage portion 4b communicating with the first fluid passage 4 is formed in the first mounting hole 6, a second internal passage portion 5b communicating with the first internal passage portion 4b is formed in the valve case 21, and the first 2 The internal passage portion 5 b communicates with the second fluid passage 6 via a valve body passage portion 34 formed in the second valve body 23.
[Selection] Figure 4

Description

  The present invention relates to a coupling device including a female joint and a male joint that can connect and separate the first and second fluid passages formed in the first and second members, respectively.

  Conventionally, a first joint attached to a first member such as a mold or a work pallet and a second joint attached to a second member such as a mold fixing member of a molding machine or a base member of a machine tool are provided. In order to supply fluid (cooling water, pressurized fluid, etc.) from one of the first and second fluid passages in the first and second members to the other in a state where the first and second members are connected, A coupling device that can connect and separate the first and second fluid passages via the first and second joints when the first and second members are connected and disconnected in a predetermined positional relationship has been put into practical use. Yes.

  The coupling device of Patent Document 1 includes a male joint and a female joint, each of which has a valve body that can be opened and closed, and the male joint and the female joint are separated from each other. With the valve body of the joint and the female joint closed, and with the male joint and the female joint connected, the distal end portion of the male joint valve body is inserted into the female joint. By opening both valve bodies with the female joint, the first and second fluid passages are connected.

  In this coupling device, when the male joint and the female joint are connected, both joints are transferred from the separated state to the connected state through the contact state. The male joint side valve case is provided with an annular seal member at the tip, and the tip of this annular seal member is in a position retracted to the valve closing side from the tip of another valve case containing the male joint side valve case. Is formed. When both joints are in contact, the annular seal member is in contact with the tip of the female joint side valve case so as to surround the passage port (valve part), and the passage between the male joint side valve case and the female joint side valve case passes through. The roadway is connected in a liquid-tight and connectable state. Therefore, when the male joint side valve body is moved forward, the first and second fluid passages can be connected without causing fluid leakage from the connecting portion.

  Further, in this coupling device, a mounting hole for mounting a male joint is formed in the second member, and a fluid pressure working chamber is defined by a male joint side valve body and a male joint side valve case at a base end portion of the mounting hole. Is formed. When connecting a male joint and a female joint, supply the fluid pressure from the external fluid pressure supply unit to the fluid pressure working chamber and drive the male joint side valve body to the valve opening side, thereby driving the male joint. And both valve bodies of the female joint can be opened.

Utility Model Registration No. 3173825

  By the way, in the coupling device of Patent Document 1, the fluid pressure working chamber is formed at the proximal end portion of the mounting hole of the second member, and the male joint side valve body is moved to the male joint side by the fluid pressure supplied to the fluid working chamber. The second fluid passage in the second member is formed on the outer periphery of the male joint side valve case so as not to interfere with the male joint side valve body and the fluid pressure working chamber due to the structure that is driven forward and backward in the valve case. It communicates with the internal passage in the male joint side valve case via the passage portion.

  For this reason, for example, when the female joint is mounted downward on the first member, the male joint is mounted upward on the second member, and the coupling device is mounted vertically, the second fluid passage is connected to the male joint. It is formed so as to extend in the direction perpendicular to the moving direction of both valve bodies of the female joint, that is, the inside of the second member. In this case, conventionally, since the second fluid passage is opened laterally on the side surface of the second member, a piping space for arranging a fluid hose or the like is provided in the lateral vicinity of the first and second members. Become.

  However, when assembling the coupling device to existing molds, work pallets, mold fixing members of molding machines, base members of machine tools, etc., piping space as described above in addition to the installation space required for the coupling device In view of the above, the piping space is limited by the lateral width size of the existing member, so there is a possibility that the piping space cannot be secured.

  In addition, since there is a case where an empty space is provided in the lower space of the portion where the coupling device of the first and second members is mounted, the piping space is used for the first and second in order to make effective use of this empty space. When provided on the lower side of the member, it is necessary to open the second fluid passage in the lower end surface of the second member. However, in this structure, the middle part of the second fluid passage must be bent, and an extra space for forming the second fluid passage must be provided in the second member. Therefore, it is difficult to reduce the installation space. is there.

  An object of the present invention is to improve the space-saving installation space and to easily secure a piping space in the coupling device.

  The coupling device according to claim 1 includes a female joint attached to the first member and a male joint attached to the second member, and the first and second fluids respectively formed on the first and second members. In the coupling device capable of connecting / separating a passage, a first mounting hole having a first valve seat is formed at a distal end portion of the first member, and a second mounting hole is formed in the second member. Is attached to the first mounting hole so as to be movable forward and backward, and has a first valve body having a first valve portion that is in contact with the first valve seat from the inside at the distal end portion, and the first valve body is attached to the valve closing side. First male urging means for energizing, and the male joint is mounted in the second mounting hole so as to be movable forward and backward, and has a second valve seat made of a seal member at a tip portion thereof, and the valve case It has a second valve portion that is mounted so as to be movable forward and backward, and that abuts against the second valve seat from the outside at the tip portion. A second valve body, a second biasing means for biasing the second valve body toward the valve closing side, and a third biasing means for biasing the valve case in the same direction as the second biasing means. And the first and second fluid passages are formed in the first and second members, respectively, so as to extend in a direction parallel to a moving direction of the first and second valve bodies. A first internal passage portion that communicates with the first fluid passage, and a first internal passage portion that communicates with the first internal passage portion in the state where the male joint is connected to the female joint inside the valve case. Two internal passage portions are formed, and the second internal passage portion communicates with the second fluid passage through a valve body passage portion formed inside the second valve body.

  According to a second aspect of the present invention, there is provided the coupling device according to the first aspect, wherein the second valve body is slidably fitted inside the valve case, and the second valve portion is formed from the piston portion. And a rod portion extending in a direction parallel to the moving direction to the opposite side, and is partitioned by a part of the second mounting hole by the piston portion and drives the second valve body to the valve opening side. A fluid pressure working chamber into which fluid pressure is introduced, and an insertion hole that is formed in the second member and communicates with the fluid pressure working chamber and the second fluid passage. The valve body passage portion is formed in the piston portion and the rod portion, and is inserted into the insertion hole in a fluid-tight manner so as to freely move forward and backward through the pressure working chamber.

  According to a third aspect of the present invention, there is provided the coupling device according to the first or second aspect, wherein the front end of the seal member is closer to the valve closing side than the surface of the second member when the male joint is separated from the female joint. It is characterized by being located in the retreated position.

  According to the first aspect of the present invention, the second internal passage portion communicates with the second fluid passage via the valve body passage portion formed in the second valve body, so that the second fluid passage and the second internal passage portion are communicated with each other. It is not necessary to form a passage portion for communicating with the passage portion in the valve case, and the first and second valve bodies are provided inside the second member without being interfered by the forward / backward drive of the second valve body. The second fluid passage can be formed in a direction parallel to the moving direction.

  For this reason, when the coupling device is mounted vertically with respect to the first and second members, the second fluid passage can be formed in a straight vertical direction, so that the space for forming the second fluid passage is made as small as possible. It can be made smaller and the installation space saving can be improved. Since the second fluid passage can be opened at the lower end surface of the second member, a piping space for a fluid hose or the like can be provided on the lower side in the longitudinal direction of the first and second members, and therefore becomes an attachment target. Compared with the case where the piping space is provided in the vicinity of the lateral direction of the first and second members, it is difficult to be restricted by the size of the existing member, and the piping space can be easily secured.

  According to the invention of claim 2, the second valve body includes a piston portion and a rod portion, and the rod portion penetrates the fluid pressure working chamber and is inserted into the insertion hole in a fluid tight manner so as to move forward and backward. Since the valve body passage portion is formed inside the rod portion, the second fluid passage can be formed inside the second member without receiving interference from the fluid pressure working chamber, and the rod portion, the insertion hole, By sealing hermetically, the air tightness of the second fluid passage can be reliably maintained.

  According to the invention of claim 3, in the state where the male joint is separated from the female joint, the distal end portion of the seal member is located at the position retracted to the valve closing side from the surface of the second member. When in the separated state, the tip of the seal member is formed at a position retracted further to the valve closing side than the tip of the second mounting hole, so that the seal member can be prevented from being damaged.

It is a top view of the female joint attachment member with which the coupling apparatus which concerns on this invention was mounted | worn, and a male joint attachment member. It is a rear view of the female joint attachment member with which the coupling apparatus was mounted | worn, and a male joint attachment member. It is a side view of the female joint attachment member with which the coupling apparatus was mounted | worn, and a male joint attachment member. It is sectional drawing of the isolation | separation state of a male joint and a female joint. It is sectional drawing of the grounding state of a male joint and a female joint. It is sectional drawing of the connection state of a male joint and a female joint. FIG. 2 is a view corresponding to FIG. 1 according to a partial change mode. FIG. 3 is a diagram corresponding to FIG. FIG. 4 is a diagram corresponding to FIG. 3 according to a partial change mode.

Embodiments of the present invention will be described below with reference to the drawings.
This embodiment is an example when the present invention is applied to a work pallet and a base member of a machine tool that fixes the work pallet.

  In the coupling device 1 of this embodiment, a female joint mounting member 2 (corresponding to a first member) attached to a work pallet P is equipped with a plurality of female joints 10 and a base member of a machine tool for fixing the work pallet P. The male joint mounting member 3 (corresponding to the second member) attached to B is provided with a plurality of male joints 20, and when the work pallet P is fixed to the base member B and released, the second joint in the female joint mounting member 2 is installed. The first fluid passage 4 and the second fluid passage 5 in the male joint mounting member 3 are connected and separated.

  As shown in FIG. 1 to FIG. 6, the coupling device 1 includes a plurality of (for example, four) female joints 10 and male joint mounting members 3 that are equidistantly provided in the female joint mounting member 2 in the longitudinal direction. A plurality of (for example, four) male joints 20 provided at equal intervals in the longitudinal direction and corresponding to the plurality of female joints 10 are provided, and the work pallet P is fixed to and released from the base member B in a predetermined positional relationship. In this case, a plurality of (for example, four) first fluid passages 4 in the female joint mounting member 2 and a plurality of (for example, four in the male joint mounting member 3) are provided via a plurality of sets of female joints 10 and male joints 20. The second fluid passage 5 can be connected and separated.

  As shown in FIGS. 1 to 3, the female joint mounting member 2 includes a female main body member 2a formed in a block shape having a rectangular shape in plan view, and a plurality of bolts 2c on the upper end surface of the female main body member 2a. And a flat female side upper member 2b which is smaller than the female side main body member 2a.

  A plurality of first mounting holes 6 having a downward opening are formed at equal intervals in the female side main body member 2a, and a plurality of first mounting holes 6b respectively communicating with the upper ends of the plurality of first mounting holes 6 are formed in the female side upper member 2b. One fluid passage 4 is formed vertically. The female joint mounting member 2 is arranged in the horizontal direction, and the female main body member 2 a is fixed to the side surface of the work pallet P with a plurality of bolts 8.

  As shown in FIGS. 1 to 3, the male joint mounting member 3 includes a male main body member 3a formed in a block shape having a rectangular shape in plan view, and a plurality of bolts (illustrated) on the upper end surface of the male main body member 3a. And a flat male side upper member 3b which is smaller than the male side main body member 3a.

  The male-side body member 3a includes a plurality of second half holes 7a in the plurality of second mounting holes 7, a plurality of vertical second fluid passages 5 respectively connected to the lower ends of the lower half portions 7a, and a plurality of lower sides. A fluid pressure passage 36 extending in the longitudinal direction communicating with the base end portion of the half portion 7a is formed, and the female-side upper member 2b has a plurality of portions respectively connected to the upper ends of the lower half portions 7a of the plurality of second mounting holes 7. An upper half portion 7b of the second mounting hole 7 is formed. The male joint mounting member 3 is disposed in the horizontal direction, and the male main body member 3 a is fixed to the side surface of the base member B with a plurality of bolts 9.

  Although not shown, the fluid port 4a of the first fluid passage 4 is formed in the female-side upper member 2b, the fluid port 4a and a predetermined fluid supply destination are connected by a fluid hose, and the fluid port of the second fluid passage 5 5a is formed in the male body member 3a, and the fluid port 5a and the fluid supply / discharge unit are connected by a fluid hose. In a state in which the plurality of first and second fluid passages 4 and 5 are connected, a fluid supply / discharge unit is driven by a control device (not shown), and fluid is supplied to the first fluid passage 4 via the second fluid passage 5. Flows, and the fluid is supplied to and discharged from a predetermined fluid supply destination via the first fluid passage 4.

Next, the female joint 10 and the male joint 20 of each set will be described in detail.
In addition, about the female joint 10, the downward direction of FIGS. 4-6 is demonstrated as a front end side, and about the male joint 20, the upper direction of FIGS.

  As shown in FIGS. 4 to 6, the female joint 10 is mounted in a first mounting hole 6 having a circular cross section formed in the female joint mounting member 2. The 1st attachment hole 6 has the 1st valve seat 12 in the front-end | tip part. The female joint 10 is mounted in the first mounting hole 6 so as to be movable forward and backward, and has a first valve body 13 having a first valve portion 14 in contact with the first valve seat 12 from the inside (base end side) at the distal end portion. And a compression coil spring 15 corresponding to first biasing means for biasing the first valve body 13 toward the valve closing side (front end side) with respect to the first mounting hole 6.

  The first attachment hole 6 opens to the lower surface side of the female joint attachment member 2, and the first fluid passage 4 is connected to the base end portion. A first internal passage portion 4 b is formed inside the first attachment hole 6, and a passage port 6 a that communicates the first internal passage portion 4 b with the outside is formed at the tip of the first attachment hole 6. A tapered inner peripheral surface that decreases in diameter toward the distal end side is formed at the distal end portion of the first mounting hole 6 and a first valve seat 12 is formed on the tapered inner peripheral surface. A distal-end recess 6b is formed in the outer peripheral wall portion at the distal end of the first mounting hole 6, and the distal-end recess 6b is slightly recessed from the surface of the female main body member 2a to the proximal end side.

  The first valve body 13 is formed concentrically with the first mounting hole 6 and has a shaft portion 13a, a large-diameter head portion 13b, a middle head portion 13c, and a distal head portion 13d in this order from the proximal end side to the distal end side. is doing. An annular seal 16 is attached to the outer peripheral portion of the proximal end portion of the distal end head portion 13 d of the first valve body 13, and the annular seal 16 forms the first valve portion 14. An annular seal 17 is mounted at the boundary between the first mounting hole 6 and the first fluid passage 4 and between the female main body member 2a and the female upper member 2b.

  An annular member 18 is fitted into the proximal end portion inside the first mounting hole 6, and a stop ring 19 is attached to the inner surface of the proximal end portion of the first mounting hole 6, and the annular member 18 is attached to the stop ring 19. It is locked so that it cannot move to the base end side. A cylindrical portion 18a extending toward the distal end is formed at the radial center of the annular member 18, and the shaft-shaped portion 13a of the first valve body 13 is slidably guided by the cylindrical portion 18a. A plurality of passage portions 18 b that communicate the first internal passage portion 4 b and the first fluid passage 4 are formed at the proximal end portion of the annular member 18.

  The compression coil spring 15 is externally mounted on the shaft-like portion 13 a of the first valve body 13 between the large-diameter head portion 13 b and the annular member 18. When the first valve body 13 is in the closed state, the first valve portion 14 (annular seal 16) and the first valve seat 12 are in contact with each other, and the distal end portion of the distal end head portion 13d of the first valve body 13 is the first portion. The front end face of the front end head portion 13d and the front end recessed portion 6b of the first attachment hole 6 are substantially continuously located on the same plane.

  As shown in FIGS. 4 to 6, the male joint 20 is mounted in the second mounting hole 7 having a circular cross section formed in the male joint mounting member 3. The male joint 20 has a valve case 21 having a second valve seat 22 at the distal end portion thereof, is mounted in the valve case 21 so as to be movable forward and backward, and abuts the second valve seat 22 at the distal end portion from the outside (front end side). A second valve body 23 having a second valve portion 24, and a compression coil spring corresponding to a second biasing means for biasing the second valve body 23 toward the valve closing side (base end side) with respect to the valve case 21 And a compression coil spring 28 corresponding to third biasing means for biasing the valve case 21 in the same direction as the compression coil spring 25 with respect to the second mounting hole 7.

  The valve case 21 includes a tube portion 21a, a tip tube portion 21b formed in a smaller diameter than the tube portion 21a, an annular horizontal plate portion 21c at the tip of the tip tube portion 21b, and the annular horizontal plate portion 21c. An annular recess 21d is formed so as to protrude outward in the radial direction. A second internal passage portion 5b is formed inside the valve case 21, and a passage port 21e that connects the second internal passage portion 5b and the outside is formed inside the annular horizontal plate portion 21c.

  On the inner peripheral portion of the valve case 21, a step portion 21 f that protrudes radially inward is formed between the tube portion 21 a and the tip tube portion 21 b. An annular seal member 26 is attached to the distal end side of the annular recess 21d. The annular seal member 26 forms the second valve seat 22 and is configured to abut on the tip recess 6b at the tip of the first mounting hole 6 so as to surround the passage opening 6a.

  The second valve body 23 includes a rod portion 23a, a piston portion 23b, a shaft base portion 23c, a shaft-shaped portion 23d, and a valve portion forming portion 23e in this order from the proximal end side to the distal end side. As shown in FIG. 4, when the male joint 20 and the female joint 10 are in the separated state, the tip of the piston portion 23b is disposed at a position retracted from the stepped portion 21f by the distance α to the base end side.

  The valve portion forming portion 23e is increased in diameter toward the distal end side, and a second valve portion 24 is formed on the outer peripheral surface thereof. An annular seal member 23f is attached to the outer peripheral portion of the piston portion 23b, and the piston portion 23b is slidably fitted inside the valve case 21. Stop rings 31a and 31b are mounted on the peripheral surface portion of the base end portion of the valve case 21, and the second valve body 23 is locked to the base end side so as not to move by the stop rings 31a and 31b.

  The rod portion 23a is formed so as to extend in the direction parallel to the moving direction of the second valve portion 24 from the base end surface of the piston portion 23b to the side opposite to the second valve portion 24. The rod part 23a has a large-diameter cylindrical part 23g extending from the central part of the piston part 23b, and a small-diameter cylindrical part 23h connected to the base end part of the large-diameter cylindrical part 23g. The male joint mounting member 3 is formed with an insertion hole 32 for communicating a fluid pressure working chamber 35 (described later) and the second fluid passage 5. The insertion hole 32 has a large-diameter hole 32a that communicates with the fluid pressure working chamber 35 and a small-diameter hole 32b that communicates with the base end of the large-diameter hole 32a.

  The rod portion 23a is inserted into the insertion hole 32 through the fluid pressure working chamber 35 so as to be able to move forward and backward in a fluid tight manner. That is, the base end side portion of the large-diameter cylindrical portion 23g of the rod portion 23a is inserted into the large-diameter hole 32a of the insertion hole 32 so as to be movable forward and backward, and the small-diameter cylindrical portion 23h of the rod portion 23a is inserted into the small-diameter hole 32b of the insertion hole 32. Inserted to move forward and backward. An annular seal member 33 is attached to the base end portion of the large diameter hole 32 a of the insertion hole 32.

  A vertical passage portion 34a extending in the longitudinal direction is formed inside the rod portion 23a, and an inclined passage portion 34b extending obliquely inside the piston portion 23b and the shaft base portion 23c and having a smaller diameter than the vertical passage portion 34a is formed. A valve body passage portion 34 is constituted by the vertical passage portion 34a and the inclined passage portion 34b. The second internal passage portion 5 b communicates with the second fluid passage 5 through the valve body passage portion 34.

  The compression coil spring 25 is mounted on the shaft base portion 23 c and the shaft-shaped portion 23 d of the second valve body 23 between the piston portion 23 b of the second valve body 23 and the annular horizontal plate portion 21 c of the valve case 21. When the second valve body 23 is in the closed state, the annular seal member 26 and the second valve portion 24 abut on the distal end side of the passage port 21e, and the distal end surface of the annular recess 21d and the distal end of the valve portion forming portion 23e. The faces are on the same face.

  The second mounting hole 7 has a lower half 7a formed in the male main body member 3a, and an upper half 7b formed in the male upper member 3b having the same diameter as the lower half 7a. And it opens to the upper surface side of the male joint attachment member 3, and the 2nd fluid channel | path 5 is connected to the base end side. In the upper half portion 7b of the second mounting hole 7, an annular portion 7c extending radially inward from the tip is formed.

  Inside the second mounting hole 7, the valve case 21 is slidably accommodated, and when the male joint 20 and the female joint 10 are in a separated state, the tip of the annular horizontal plate portion 21c of the valve case 21 is in the annular portion 7c. It is located at a position retracted from the base end to the base end side by a distance β. An annular seal member 29 is attached to the boundary between the lower half 7a and the upper half 7b of the second mounting hole 7. The distal end portion of the annular recess 21d of the valve case 21 is slightly recessed from the distal end portion of the annular portion 7c toward the proximal end side.

  The compression coil spring 28 is externally attached to the distal end cylindrical portion 21 b between the distal end of the cylindrical portion 21 a of the valve case 21 and the proximal end of the annular portion 7 c of the second mounting hole 7. The biasing force of the compression coil spring 28 is set smaller than the sum of the biasing force of the compression coil spring 25 and the force received from the fluid acting on the valve case 21 toward the valve opening side. After completion, the compression operation of the compression coil spring 25 is started.

  In this coupling device 1, the work pallet P and the base member B are in contact, that is, the female joint mounting member 2 and the male joint mounting member 3 are in contact (the tip recess 6 b and the tip of the valve case 21. In the male joint 20, the valve case 21 is driven into the second mounting hole 7 and the second valve body 23 is driven into the valve case 21. By this, the valve body drive means which drives the 1st, 2nd valve bodies 13 and 23 to the valve opening side is provided.

  This valve body drive means is configured in common to a plurality of sets of female joints 10 and male joints 20, and collectively includes a plurality of first and second valve bodies 13, 23 of the plurality of sets of female joints 10 and male joints 20. Can be driven to the valve opening side. The valve body driving means includes a piston portion 23b provided integrally with the second valve body 23 of each male joint 20, a fluid pressure operating chamber 35 for applying fluid pressure to the piston portion 23b, and the fluid pressure operation. The chamber 35 is constituted by a fluid pressure supply unit (not shown) for supplying fluid pressure via a fluid pressure passage 36 extending in the longitudinal direction formed in the male side main body member 3a.

  Each male joint 20 is provided with a fluid pressure working chamber 35, and the fluid pressure working chamber 35 is defined in a part of the second mounting hole 7 by a proximal end portion of the valve case 21, a piston portion 23 b and a rod portion 23 a. Then, fluid pressure (for example, air pressure or hydraulic pressure) for driving the second valve body 23 to the valve opening side is introduced. The male joint mounting member 3 is formed with fluid pressure passages 36 for connecting a plurality of fluid pressure working chambers 35 corresponding to the plurality of male joints 20. The fluid pressure passage 36 includes a fluid pressure passage that extends from the center in the longitudinal direction to the lower end surface of the male joint mounting member 3, and a fluid pressure port is formed at the lower end of the fluid pressure passage. The fluid pressure port and the fluid pressure supply Units are connected by a fluid pressure hose. The fluid pressure supply unit is controlled by the control device, the fluid pressure supply unit is driven, and the fluid pressure is supplied to and discharged from each fluid pressure working chamber 35.

The operation and effect of the coupling device 1 described above will be described.
First, the female joint mounting member 2 and the male joint mounting member 3 are mounted to the work pallet P and the base member B via a plurality of bolts 8 and 9, and correspond to the first and second fluid passages 4 and 5 and the fluid pressure passage 36. Connect the fluid hoses to be connected. At this time, a plurality of fluid hoses connected to the second fluid passage 5 and the fluid pressure passage 36 can be collectively disposed below the male joint mounting member 3.

  In a state where the work pallet P is not fixed to the base member B, each female joint 10 and the male joint 20 are separated, and the first and second valve bodies 13 and 23 are closed. Next, the work pallet P is transported to be fixed to the base member B. At this time, the female joint 10 and the male joint 20 do not protrude from the surfaces of the female joint mounting member 2 and the male joint mounting member 3, so When the pallet P is moved in parallel with respect to the fixed surface of the base member B, the work pallet P and the base member B can be brought into contact with each other.

  In order to fix the work pallet P to the base member B in a predetermined positional relationship, when the work pallet P is moved toward the base member B with the female joints 10 and the male joints 20 facing each other, the work pallet The surfaces of P and base member B are in contact with each other. At this time, as shown in FIG. 4, the tip recessed portion 6 b and the valve case 21 are disposed in a slightly opposed state, and the work pallet P is fixed to the base member B in this state.

  Next, fluid pressure is supplied to the fluid pressure working chamber 35 from the fluid pressure supply unit, and the fluid pressure acts on the base end surface of the piston portion 23b. At this time, the urging force of the compression coil spring 28 is set smaller than the sum of the urging force of the compression coil spring 25 and the force received from the fluid acting on the valve case 21 toward the valve opening side. The compression operation of the compression coil spring 28 is started before the compression operation, and the valve case 21 is driven to advance against the urging force of the compression coil spring 28.

  As a result, as shown in FIG. 5, the annular seal member 26 surrounds and abuts the passage opening 6 a on the distal end portion of the distal end recess 6 b, so that the annular seal member 26 and the passage opening 6 a of the first mounting hole 6 and the valve Connection is possible with the passage opening 21e of the case 21 being sealed.

  When the valve case 21 is driven to advance into the second mounting hole 7, the tip of the valve case 21 comes into contact with the tip recess 6 b of the first mounting hole 6, and the compression operation of the compression coil spring 28 ends and the compression coil spring 25. The compression operation starts. When the second valve body 23 is driven to advance, the distal end surface of the valve portion forming portion 23e comes into contact with the distal end surface of the distal end head portion 13d, so that the first valve body 13 and the second valve body 23 are integrally opened. Perform valve operation. As shown in FIG. 6, when the second valve body 23 is driven forward by a distance β with respect to the valve case 21, the tip of the piston portion 23 b comes into contact with the base end of the step portion 21 f, and the compression operation of the compression coil spring 25 is performed. finish.

  Thus, the female joint 10 and the male joint 20 are connected, and the first and second fluid passages 4 and 5 are connected to the first internal passage portion 4b and the passage port 6a of the female joint 10, and the second internal passage portion of the male joint 20. 5b, the passage port 21e, and the valve body passage portion 34 are connected to each other, and in this state, fluid can be supplied and discharged from the fluid supply / discharge unit to the first fluid passage 4 in the female joint mounting member 2. When fluid pressure is discharged from each fluid pressure working chamber 35, the valve case 21, the second valve body 23, and the first valve body 13 are returned by the compression coil springs 28, 25, and 15, and the first and second valve bodies are returned. 13 and 23 are closed, and in this state, the work pallet P can be released from the base member B.

  According to this coupling device 1, the second internal passage portion 5 b communicates with the second fluid passage 5 via the valve body passage portion 34 formed inside the second valve body 23, so that the second fluid passage 5 and the second internal passage portion 5b are not required to be formed in the valve case 21, and the inside of the male joint mounting member 3 is not affected by the forward / backward drive interference of the second valve body 23. Thus, the second fluid passage 5 can be formed in a direction parallel to the moving direction of the first and second valve bodies 13 and 23.

  For this reason, when the coupling device 1 is vertically mounted on the female and male joint mounting members 2 and 3 corresponding to the first and second members, the second fluid passage 5 is formed in a straight vertical direction. Therefore, the space for forming the second fluid passage 5 can be reduced as much as possible, and the installation space saving can be improved. Since the second fluid passage 5 can be opened at the lower end surface of the male joint mounting member 3, a piping space for a fluid hose or the like can be provided on the lower side in the vertical direction of the male joint mounting member 3, so As compared with the case where the pipe space is provided in the vicinity of the male joint mounting member 3 in the lateral direction, the pipe space can be easily secured.

  The second valve body 23 includes a piston portion 23b and a rod portion 23a. The rod portion 23a passes through the fluid pressure working chamber 35 and is inserted into the insertion hole 32 in a fluid-tight manner so as to be movable forward and backward. The piston portion 23b Since the valve body passage portion 34 is formed inside the rod portion 23a, the second fluid passage 5 can be formed inside the male joint mounting member 3 without receiving interference from the fluid pressure working chamber 35. By sealing between the rod part 23a and the insertion hole 32 in an airtight manner, the airtightness of the second fluid passage 5 can be reliably maintained.

  Further, in a state where the male joint 20 is separated from the female joint 10, the tip of the annular seal member 26 is located at a position retracted to the valve closing side from the surface of the male joint mounting member 3, so that both joints are separated. In the state, since the tip end portion of the annular seal member 26 is formed at a position retracted to the valve closing side from the tip end portion of the second mounting hole 7, it is possible to prevent the annular seal member 26 from being damaged.

  According to this coupling device 1, the amount of advancement of the second valve body 23 with respect to the female joint 10 is set such that the relative advancement amount of the second valve body 23 with respect to the valve case 21 and the relative advancement amount of the valve case 21 with respect to the second mounting hole 7. Can be secured by the total amount of advance.

  In addition, before the male joint 20 and the female joint 10 are connected, the annular seal member 26 is brought into contact with the female joint 10 in a state of surrounding the first valve portion 14 by using the advance movement of the valve case 21. Therefore, the first valve portion 14 and the second valve portion 24 can be connected in a liquid-tight and connectable state, and the distal end portion of the annular seal member 26 is opened more than the distal end portion of the valve case 21. The sealing performance between the male joint 20 and the female joint 10 can be ensured without projecting to the side position.

  The biasing force of the compression coil spring 28 is set smaller than the sum of the biasing force of the compression coil spring 25 and the force received from the fluid acting on the valve case 21 toward the valve opening side. It is possible to start earlier than the compression operation of the compression coil spring 25, and to reliably seal between the male joint 20 and the female joint 10 by the annular seal member 26 before the first and second fluid passages 4 and 5 are connected. it can.

Next, a mode in which the above embodiment is partially changed will be described.
[1] In the above-described embodiment, the female joint mounting member 2 and the male joint mounting member 3 are each configured in a rectangular shape in plan view, and a plurality of sets of the female joint 10 and the male joint 20 are equally spaced in the longitudinal direction. Although it is attached, it is not necessary to limit to the above structure, and the structure of the female joint mounting member 2 and the male joint mounting member 3 and the number, arrangement, and structure of the female joint 10 and the male joint 20 can be appropriately changed. .

  For example, as shown in FIGS. 7 to 9, the female joint mounting member 2 </ b> A includes a female main body member 2 </ b> Aa formed in a square block shape in plan view, and a plurality of bolts on the upper end surface of the female main body member 2 </ b> Aa. The male-side main body 2Ab is formed of a square-shaped female-side upper member 2Ab that is fixed through the female-side main body member 2Aa, and is formed into a square-shaped block shape in the plan view. The member 3Aa and a male upper member 3Ab that is fixed to the upper end surface of the male main body member 3Aa via a plurality of bolts and has a square shape in plan view that is thinner than the male main body member 3Aa.

  That is, the coupling device 1 is equipped with a plurality of (for example, four) female joints 10 provided in the vicinity of the corner of the female joint mounting member 2A, a corner of the male joint mounting member 3A, and a plurality of A plurality of (for example, four) male joints 20 each having a pair with the female joint 10 are provided. That is, a plurality of sets of female joints 10 and male joints 20 are arranged in a 2 × 2 square shape and mounted. When the size of the female joint mounting member 2A and the male joint mounting member 3A is large, it is possible to mount a plurality of sets of female joints 10 and male joints 20 in a matrix of a plurality of rows and a plurality of columns.

[2] In the present embodiment, the female joint 10 attached to the female joint attachment member 2 attached to the work pallet P and the male joint 20 attached to the male joint attachment member 3 attached to the base member B are provided. Although the example of the provided coupling device 1 has been described, the present invention is not limited thereto, and the male joint mounting members 2 and 3 may be omitted and directly mounted on the work pallet P or the base member B of the machine tool. It may be mounted on a mold and a platen of an injection molding machine.

[3] Those skilled in the art can implement the present invention in various forms with various modifications without departing from the spirit of the present invention, and the present invention includes such modifications. .

  The present invention provides a coupling device including a female joint and a male joint that can connect and separate the first and second fluid passages formed in the first and second members, respectively, and a second internal passage portion and a second fluid passage. By communicating with the fluid passage through the valve body passage portion formed inside the second valve body, it is possible to improve the space-saving installation space and easily secure the piping space.

1 Coupling device 2 Female joint mounting member (first member)
3 Male joint mounting member (second member)
4 First fluid passage 4b First internal passage portion 5 Second fluid passage 5b Second internal passage portion 6 First attachment hole 7 Second attachment hole 10 Female joint 12 First valve seat 13 First valve body 14 First valve portion 15 Compression coil spring (first biasing means)
16 annular seal 20 male joint 21 valve case 22 second valve seat 23 second valve body 23a rod part 23b piston part 24 second valve part 25 compression coil spring (second urging means)
26 annular seal member 28 compression coil spring (third urging means)
32 Insertion hole 34 Valve element passage 35 Fluid pressure working chamber

Claims (3)

A coupling having a female joint attached to the first member and a male joint attached to the second member and capable of connecting and separating the first and second fluid passages formed in the first and second members, respectively. In the device
A first mounting hole having a first valve seat at a tip portion is formed in the first member, and a second mounting hole is formed in the second member;
The female joint is attached to the first mounting hole so as to be movable forward and backward, and has a first valve body having a first valve portion that abuts against the first valve seat from the inside at a tip portion thereof, and closes the first valve body. First biasing means for biasing to the side,
The male joint is attached to the second mounting hole so as to be movable forward and backward, and has a second valve seat made of a seal member at the tip portion, and is attached to the inside of the valve case so as to be movable forward and backward and the tip portion. A second valve body having a second valve portion that comes into contact with the second valve seat from the outside, second urging means for urging the second valve body toward the valve closing side, and the valve case with the second attachment. A third biasing means for biasing in the same direction as the biasing means,
The first and second fluid passages are respectively formed in the first and second members so as to extend in a direction parallel to the moving direction of the first and second valve bodies,
A first internal passage portion communicating with the first fluid passage is formed in the first mounting hole, and the first joint is connected to the female joint in the valve case. A second internal passage portion communicating with the internal passage portion is formed;
The coupling device, wherein the second internal passage portion communicates with the second fluid passage through a valve body passage portion formed inside the second valve body. The second valve body includes a piston portion that is slidably fitted inside the valve case, and a rod portion that extends from the piston portion to the opposite side of the second valve portion in a direction parallel to the moving direction. And
Formed in the second member, a fluid pressure working chamber that is defined by a part of the second mounting hole by the piston portion and into which a fluid pressure for driving the second valve body to the valve opening side is introduced. And an insertion hole communicating the fluid pressure working chamber and the second fluid passage,
The rod portion is inserted into the insertion hole in a fluid-tight manner through the fluid pressure working chamber so as to move forward and backward, and the valve body passage portion is formed inside the piston portion and the rod portion. The coupling device according to claim 1. 3. The state according to claim 1 or 2, wherein in a state where the male joint is separated from the female joint, the tip end portion of the seal member is located at a position retracted to the valve closing side from the surface of the second member. The coupling device as described.