JP4317657B2 - Plunger valve forming device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention Plunger valve molding equipment For details, valve A caulking hole is formed on the tip of the body material by forging, and a steel ball or pin is used for the caulking hole. valve After inserting the element, it can be crimped by forging Plunger valve molding It relates to the device.
[0002]
[Prior art]
In an automobile braking device, an electromagnetic valve is used to control the supply of brake oil. A plunger valve that is excited by a solenoid and controls the opening and closing of the valve hole is accommodated inside the electromagnetic valve. This plunger valve is composed of a plunger valve main body material and a spherical valve that is press-fitted into a caulking hole formed on the tip end surface thereof.
[0003]
A conventional method for manufacturing a plunger valve will be described with reference to FIGS. As shown in FIG. 15A, a wire 91 is cut into a predetermined length to form a valve body material 92 having a groove 92a. Next, as shown in FIG. 2B, a tapered correction surface 92b is formed on one end surface of the valve body material 92 by forging. Next, as shown in FIG. 3C, a tapered correction surface 92c is formed on the opposite side of the valve main body material 92 by forging. Thereafter, as shown in FIG. 4D, a narrowed shaft 92d is forcibly formed on one correction surface 92b side. Further, as shown in FIG. 9E, the tip surface 92e of the aperture shaft 92d is drilled with a drilling machine or the like to form a caulking hole 92f. Thereafter, a spherical valve 93 is press-fitted into the caulking hole 92f by a press as shown in FIG. 9F, and the outer peripheral edge of the throttle shaft 92d is spherically shaped by a caulking device as shown in FIG. The plunger valve 94 is manufactured by pressing and caulking to the valve 93 side.
[0004]
[Problems to be solved by the invention]
In the manufacturing method of the conventional plunger valve 94, the four steps of manufacturing the plunger valve main body material 92 shown in FIGS. Plunger valve molding equipment It is carried out continuously by a device (so-called part former). However, the caulking hole 92f for the aperture shaft 92d shown in FIG. 15 (e) is drilled on the tip end surface 92e of the aperture shaft 92d by a drilling machine or the like which is a device different from the parts homer. Further, the step of press-fitting the spherical valve 93 shown in FIG. 15 (f) into the caulking hole 92f is also performed by an independent press machine. Further, the caulking process shown in FIG. 15 (g) has also been performed by an independent caulking apparatus. For this reason, each process of Drawing 15 (a)-(d), (e), (f), and (g) was divided, and there was a problem that the manufacturing efficiency of plunger valve 94 could not be improved. .
[0005]
In the method of forming the caulking hole 92f in the tip end surface 92e of the aperture shaft 92d by a drilling machine, the axis of the aperture shaft 92d and the axis of the caulking hole 92f do not necessarily coincide with each other, and there is a problem in processing accuracy. The quality of the product as the jar valve 94 cannot be made uniform. Further, since the caulking hole is drilled by a drilling machine or the like, a problem of chip disposal also occurs.
[0006]
By the way, the five steps from FIGS. 15A to 15E are formed by forging. Plunger valve molding equipment A device is also proposed. 15A to 15E can be continuously performed in this case, and the caulking hole 92f is formed by forging, so that the accuracy of the processing position of the caulking hole 92f is improved, and the spherical valve 93 The centering accuracy with respect to the diaphragm shaft 92d is improved. However, the press-fitting step and the caulking step of the spherical valve 93 shown in FIGS. 15 (f) and 15 (g) are performed by different apparatuses, so that there is a problem that the manufacturing process is divided and the working efficiency cannot be improved. .
[0007]
The present invention has been made to solve the above-mentioned problems in the prior art, and its purpose is Plunger valve Processing of caulking holes in the body material and against caulking holes valve Efficient element insertion and caulking work No, plunger valve can be molded quickly Ru Plunger valve molding equipment Is to provide a place.
[0008]
[Means for Solving the Problems]
In order to solve the above problem, the invention according to claim 1 A forging mechanism for forging a tapered correction surface at both ends of the plunger valve body material (92) obtained by cutting the wire into a predetermined length; and a forging mechanism for forcing a throttle shaft at one end of the valve body material; A caulking hole forging forming mechanism for forming a caulking hole on the end face of the throttle shaft of the valve body material, a valve element insertion mechanism for inserting a spherical or cylindrical valve element into the caulking hole of the valve body material, and a valve body material A valve element caulking mechanism that presses the outer peripheral edge of the caulking hole against the outer peripheral surface of the valve element and caulks the valve element to the valve body material, and each of the mechanisms is a common die block attached to the upper surface of the machine base And a common ram mounted so as to be movable back and forth toward the die block, and a material transfer mechanism for transferring the valve body material to a mechanism for the next stroke is interposed between the die block and the ram. Each mechanism provided The gist of this is that it is configured to operate continuously as a series of mechanisms.
[0010]
Claim 2 The invention described in claim 1 In the caulking hole forging forming mechanism, valve Consists of a first caulking hole forging mechanism that forms a shallow caulking hole in the end face of the main body material, and a second caulking hole forging mechanism that is provided on the downstream side of this mechanism and forges the shallow caulking hole into a deep caulking hole. It is a summary.
[0011]
Claim 3 The invention described in claim 1 In the element insertion mechanism, The da The holder provided in the i-block and received in the holder's receiving hole valve With a knockout pin that pushes out the body material, The One element at a time valve The gist is that an element press-fitting mechanism for press-fitting into the caulking hole of the main body material is provided.
[0012]
Claim 4 The invention described in claim 3 The element press-fitting mechanism includes a liner that can reciprocate within a predetermined stroke range within a mounting cylinder that is cantilevered and fixed to the ram, and that is biased in a protruding direction by a biasing member, and a central portion of the liner. An element supply nozzle that is inserted in a predetermined stroke range so as to be able to reciprocate in a guide hole formed in the axial direction and is urged in a protruding direction by an urging member, and formed in the axial direction at the center of the element supply nozzle A press-fit pin that is inserted into the guide hole so as to be able to reciprocate within a predetermined stroke range, and is urged in the backward direction by the urging member, and a supply passage provided on the outer peripheral surface of the tip of the element supply nozzle, And an element supply pipe for supplying an element to the guide hole, and an accommodating hole provided slightly in front of the supply passage with respect to the outer peripheral surface of the tip of the element supply nozzle, and the guide A locking member that prevents the element supplied into the housing from dropping off, a biasing member that is provided in the accommodation hole and biases the locking member to a position that always protrudes into the guide hole, and the press-fitting Forming a space for accommodating only one element in the guide hole between the distal end surface of the press-fit pin and the locking member in a state where the pin is in the last retracted position by the biasing member; The tip surface of the element supply nozzle is moved forward. valve When the ram is further advanced in a state where the position is regulated by the main body material, the press-fit pin includes moving the guide hole of the element supply nozzle in the protruding direction and press-fitting the element into the caulking hole. And
[0013]
Claim 5 The invention described in claim 1 ~ 4 In any one of the above, the element caulking mechanism is Above Provided in the die block, and valve Die formed with a receiving hole for receiving the main body material in the reverse direction, and inserted into the pin guide hole of the die and received valve A knockout pin that pushes out the body material, The And valve A punch that presses the proximal end of the main body material, a tapered circumferential caulking surface formed between the accommodation hole of the die and the pin guide hole, valve The outer edge of the main body material is pressed with the punch to press the outer peripheral edge of the caulking hole into the caulking surface, and the outer peripheral surface of the element is pressed in the reduced diameter direction and caulked. To do.
[0014]
Claim 6 The invention described in claim 4 or 5 Before Record A plurality of knockout pins provided for each mechanism with respect to the i-block are operated at the same time by a common drive mechanism, and the punch and element supply nozzle provided at the ram are configured to be operated at the same time by the longitudinal movement of the ram. Please It is a summary.
[0016]
Claim 7 The invention described in claim 1 In the element insertion mechanism, The da Provided in iBlock, and valve A holder that accommodates the body material in the opposite direction; The And is received in the holder's receiving hole. valve Punch that pushes the body material, and provided on the die block side, one element at a time valve The gist of the invention is that it includes an element press-fitting mechanism that press-fits the caulking hole of the main body material.
[0017]
Claim 8 The invention described in claim 7 The element press-fitting mechanism is formed in a cylindrical element supply nozzle that can be projected and retracted with a predetermined stroke with respect to the accommodation hole of the holder and also serves as a knockout pin, and is formed in the axial direction at the center of the element supply nozzle Connected to a press-fit pin inserted into the guide hole so as to be able to reciprocate within a predetermined stroke range and biased in a backward direction by a biasing member, and a groove provided in the axial direction on the outer peripheral surface of the tip of the element supply nozzle And an element supply pipe that supplies the element to the guide hole at a predetermined position, and a container that is provided at a position slightly ahead of the supply pipe at a predetermined position of the holder, and is supplied into the guide hole. A locking member that prevents the element from falling off, and a biasing member that is provided in the housing cylinder and biases the locking member to a position that always protrudes into the guide hole; Forming a space for accommodating only one element in the guide hole between the front end surface of the press-fit pin and the locking member in a state where the press-fit pin is in the last retracted position by the biasing member; The punch moves as the ram advances valve In conjunction with the operation of pushing the main body material into the receiving hole of the holder, the press-fit pin includes moving the guide hole of the element supply nozzle in the protruding direction to press-fit the element into the caulking hole. And
[0018]
DETAILED DESCRIPTION OF THE INVENTION
(First embodiment)
Hereinafter, the plunger of the present invention Dialect Equipment The A specific first embodiment will be described with reference to FIGS.
(Schematic configuration of the device)
FIG. 8 is a plan view showing a schematic configuration of the multistage forging and forming apparatus. A die block 2 is disposed at a predetermined position of the machine base 1. In this die block 2, five dies 29 to 29, two holders 48 and 49, and one die 71 are mounted in parallel at a predetermined interval in this order. In addition, a ram 6 is installed on the machine base 1 so as to be able to move back and forth at a position spaced to the right from the die block 2 (the right side in FIG. 8 is the front side and the left side is the rear side). On the front surface, six punches 38 to 38, one spherical valve supply nozzle 55, and one punch 38 are mounted in parallel in this order so as to correspond to the dies 29 to 29, the holders 48 and 49, and the die 71, respectively. . The die 29 to 29, the holders 48 and 49 and the die 29, the punch 38 to 38, the spherical valve supply nozzle 55 and the punch 38 are used for five forging stations S1, S2, S3, S4 and S5, a relay station S6, a spherical station. A press-fitting station S7 for the valve 93 and a caulking station S8 for the spherical valve 93 are configured.
[0019]
A crankshaft 13 provided integrally with a flywheel 12 rotated by a driving motor 11 of the forging apparatus is connected to the rear end of the ram 6 via a connecting member 14. The ram 6 is moved back and forth toward the die block 2 via the connecting member 14 by the operation of the driving motor 11. A material transfer mechanism 15 is provided between the die block 2 and the ram 6. Then, the plurality of material transfer chucks (not shown) provided in the material transfer mechanism 15 are used to simultaneously process the valve body materials 92 to 92 between the stations S1, S2, S3, S4, S5, S6, S7, and S8. To be transported to.
[0020]
FIG. 9 shows the valve body material 92 shown in FIG. 15A obtained by cutting the wire 91 into a predetermined length by a cutting mechanism (not shown), as shown in FIGS. 15B, 15C, and 15D. The flat surface forming mechanisms 17A, 17B and the drawing shaft forging mechanism 17C as the forging forming mechanisms corresponding to the three stations S1, S2, S3 until the shaping surfaces 92b, 92c and the drawing shaft 92d are forged. It is sectional drawing.
[0021]
In FIG. 10, a plunger valve 94 is manufactured by forming a caulking hole 92f in the tip end surface 92e of the throttle shaft 92d of the valve main body 92 and then press-fitting a spherical valve 93 as an element into the caulking hole 92f. The first and second caulking hole forging forming mechanisms 17D and 17E, the material standby gripping mechanism 17F, the spherical valve press fitting mechanism 17G, and the spherical valve caulking mechanism 17H corresponding to the five stations S4, S5, S6, S7, and S8. It is a plane sectional view expanding and showing.
[0022]
The first and second caulking hole forging and forming mechanisms 17D and 17E are forcibly forming the caulking hole 92f in two stages of shallow depth in the distal end surface 92e of the throttle shaft 92d of the plunger valve main body material 92. The material standby gripping mechanism 17F temporarily waits the valve body material 92 having the caulking hole 92f formed in the reverse direction. The spherical valve press-fitting mechanism 17G presses the spherical valve 93 into the caulking hole 92f of the plunger valve main body material 92. The spherical valve caulking mechanism 17H caulks the pressed spherical valve 93 to the tip of the throttle shaft 92d.
[0023]
Therefore, the configurations of the mechanisms 17A, 17B, 17C, 17D, 17E, 17F, 17G, and 17H will be sequentially described.
(Correction surface forging mechanism 17A, 17B and throttle shaft forging mechanism 17C)
As shown in FIG. 9, a fixed guide member 25 and a die liner 26 are fitted in the mounting holes 2 a, 2 b, 2 c of the die block 2, and a die holder 27 and a die 29 are fitted in the die liner 26. An intermediate knockout pin 34 and a knockout pin 35 are inserted into the fixed guide member 25, the die holder 27, and the die 29 so as to be capable of reciprocating in the front-rear direction by a cam mechanism (not shown).
[0024]
A fixed support base 36 and a holder 37 are fitted into the mounting cylinders 23 a, 23 b, and 23 c of the ram 6, and a punch 38 is supported by the holder 37. A pressing pin 39 is interposed between the fixed support base 36 and the punch 38. Reference numeral 40 denotes a bolt for fixing the punch 38 to the holder 37.
[0025]
Accordingly, the correction surface 92b is formed on the end surface of the valve body material 92 by the die 29 and the punch 38 of the correction surface forging mechanism 17A, and the correction surface is formed on the end surface of the valve body material 92 by the die 29 and the punch 38 of the correction surface forging mechanism 17B. 92c is formed by forging, and the drawing shaft 92d is formed by forging on the correction surface 92b side of the valve body material 92 by the die 29 and the punch 38 of the drawing shaft forging mechanism 17C.
[0026]
When the punch 38 is retracted and the knockout pin 35 is advanced after the forging of the throttle shaft 92d, the valve main body material 92 is discharged to the outside from the forming portion 29a, and the material transfer mechanism 15 makes the next first caulking hole. It is transferred to the pressure forming mechanism 17D.
[0027]
(First caulking hole forging mechanism mechanism 17D)
A first caulking hole forging and forming mechanism 17D shown in FIG. 1 is a mechanism for forming a shallow caulking hole 92f at the tip of the throttle shaft 92d of the plunger valve main body material 92 as shown in FIG. A fixed guide member 25 and a die liner 26 are fitted into the mounting hole 2d of the die block 2, and a die holder 27 is accommodated on the inner peripheral surface of the tip of the die liner 26 so as to be capable of reciprocating in the axial direction. A locked step portion 27 a is formed on the outer peripheral surface of the die holder 27, and the position is regulated by a locking step portion 26 a formed on the inner peripheral surface of the die liner 26. A die holder 28 is inserted into the inner peripheral surface of the die holder 27, and a die 29 is inserted into the inner peripheral surface of the die holder 28. The die 29 is provided with a molding portion 29a and an insertion hole 29b for a diaphragm shaft 92d. A spring receiving member 30 is fixed by a bolt 31 on the inner peripheral surface near the inner end of the die liner 26. An angular spring 33 is interposed between the spring receiving member 30 and the bottom of the die holder 27 and always presses the die holder 27 outward. An intermediate knockout pin 34 is inserted into the guide hole 25a of the fixed guide member 25 and the guide hole 30a of the spring receiving member 30 so as to be able to reciprocate in the front-rear direction by a cam mechanism (not shown). A knockout pin 35 is interposed between the front end surface of the intermediate knockout pin 34 and the guide hole 27b and insertion hole 29b of the die holder 27. Tip surface of knockout pin 35 35a No protrusion 35 b Is formed, and a shallow crimping hole 92f is formed on the tip end surface 92e of the throttle shaft 92d of the plunger valve main body 92 by forging.
[0028]
A mounting cylinder 23d is connected to the front end surface of the ram 6, and a fixed support base 36 is fitted and fixed at a predetermined position on the inner peripheral surface of the mounting cylinder 23d. A holder 37 is fitted on the distal end side of the mounting cylinder 23 d, a punch 38 is penetrated in the front-rear direction at the distal end portion, and a pressing pin 39 is interposed between the fixed support base 36 and the punch 38. A set bolt 40 is screwed onto the holder 37 to fix the punch 38 to the holder 37.
[0029]
Accordingly, the ram 6 moves forward with the plunger valve body material 92 inserted in the molding portion 29a and the insertion hole 29b of the die 29, and the distal end surface of the punch 38 presses the proximal end surface of the plunger valve body material 92. Then, the throttle shaft 92d of the plunger valve main body material 92 is pressed and held at a predetermined position in the insertion hole 29b. In this state, since the knockout pin 35 is held at a predetermined position, the protrusion 35 is formed on the distal end surface 92e of the diaphragm shaft 92d. b Is pressed, and the caulking hole 92f is shallowly formed.
[0030]
When the punch 38 is retracted and the intermediate knockout pin 34 and the knockout pin 35 are advanced after forging the shallow hole 92f, the valve body material 92 is discharged from the forming portion 29a to the next by the material transfer mechanism 15. To the second caulking hole forging forming mechanism 17E.
[0031]
(Second caulking hole forging mechanism 17E)
The second caulking hole forging mechanism 17E is a mechanism for deepening the caulking hole 92f formed shallower into a predetermined caulking hole 92f, and only the configuration different from the first caulking hole forging mechanism 17D will be described. .
[0032]
A holder 42 is fitted and fixed in the guide hole 30 a of the spring receiving member 30, and the position of the base end portion thereof is regulated by the lid plate 43. A positioning rod 44 is fitted into the holder 42 so that the position of the base end portion of the perforated pin 41 is regulated by the positioning rod 44. A plurality of branch knockout pins 45 connected to the intermediate knockout pin 34 are supported through the cover plate 43, the holder 42, and the fixed guide member 25 in the front-rear direction. One end of a receiving plate 46 fitted so as to surround the outer periphery of the perforated pin 41 is in contact with the tip of the branch knockout pin 45. A cylindrical knockout pin 47 is fitted to the outer periphery of the perforated pin 41 so as to be relatively movable in the axial direction, a base end portion of the knockout pin 47 is connected to a receiving plate 46, and a distal end portion of the knockout pin 47 is The plunger valve main body material 92 can come into contact with the distal end surface 92e of the throttle shaft 92d.
[0033]
Therefore, in the state where the punch 38 is pressed against the proximal end surface of the plunger valve main body material 92, the distal end portion of the punch pin 41 is provided. 41a Is pressed into the shallow caulking hole 92f of the throttle shaft 92d, the caulking hole 92f having a predetermined depth is formed by forging. In this state, after the punch 38 is moved backward, when the cam mechanism is operated and the intermediate knockout pin 34 is advanced, the knockout pin 47 is advanced via the branch knockout pin 45 and the receiving plate 46, and the valve body material 92 is moved. The die 29 is pushed out of the molding portion 29a and transferred to the next valve body material standby gripping mechanism 17F by the material transfer mechanism 15.
[0034]
(Valve body material standby gripping mechanism 17F)
The valve body material standby gripping mechanism 17F reverses the plunger valve body material 92 so that the throttle shaft 92d faces outside in the accommodation hole 48a of the holder 48 fitted in the mounting hole 2f provided in the die block 2. For holding and holding. The operation of reversing the valve body material 92 from the position shown in FIG. 2B to the position shown in FIG. 2C is performed by reversing a material transfer chuck (not shown) of the material transfer mechanism 15. The punch 38 accommodates and holds the valve body material 92 at a predetermined position with the knockout pin 35.
[0035]
The valve body material 92 that has been temporarily waiting by the material standby gripping mechanism 17F is operated after the punch 38 is retracted, the cam mechanism is operated, the knockout pin 35 is advanced, and the valve body material 92 is accommodated in the holder 48. The material is pushed out of the hole 48a and transferred to the next spherical valve press-fitting mechanism 17G by the material transfer mechanism 15.
[0036]
(Spherical valve press-fitting mechanism 17G)
Next, the spherical valve press-fitting mechanism 17G for press-fitting the spherical valve 93 into the caulking hole 92f of the plunger valve main body material 92 will be described with reference to FIGS.
[0037]
A large-diameter holder 48 is fitted and fixed in the mounting hole 2g of the die block 2. A small-diameter holder 49 is fitted and fixed to the tip of the holder 48. The plunger valve main body material 92 is accommodated in the accommodation hole 49 a of the holder 49, and the accommodation position thereof is regulated by the knockout pin 35.
[0038]
As shown in FIG. 3, a liner 51 is accommodated in a mounting cylinder 23g connected to the ram 6 so as to be capable of reciprocating in the front-rear direction with a predetermined stroke. A position restricting ring 52 is fixed to the tip of the mounting cylinder 23g by a bolt 53, and a flange 51a formed on the outer periphery of the liner 51 is brought into contact with the position restricting ring 52 so that the liner 51 protrudes forward. Is regulated. A square spring 54 is accommodated between the fixed support 36 and the flange 51a of the liner 51, and always urges the liner 51 forward (in the protruding direction).
[0039]
A large-diameter guide hole 51b and a small-diameter guide hole 51c are formed concentrically at the center of the liner 51, and a spherical valve supply nozzle 55 is accommodated in the guide hole 51c so as to be able to reciprocate in the front-rear direction with a predetermined stroke. Has been. A flange 55a is formed on the inner end side of the spherical valve supply nozzle 55, and the spherical valve supply nozzle 55 protrudes forward by coming into contact with a step surface 51d formed at the inner end of the guide hole 51b of the liner 51. The position is regulated.
[0040]
A cylindrical pressing pin 56 is fitted into the large-diameter guide hole 51b of the liner 51 so as to be movable in the front-rear direction, and is formed between the flange 56a integrally formed at the front end portion and the fixed support base 36. A square spring 57 is interposed. Then, the pressing pin 56 is pressed forward so that the spherical valve supply nozzle 55 is always pressed forward. A small-diameter guide hole 55b is formed in the central portion of the spherical valve supply nozzle 55 on the distal end side, and a large-diameter guide hole 55c is formed in the central portion on the proximal end side. The guide hole 55b accommodates the tip end portion of the press-fit pin 58 so as to be slidable back and forth in a front-rear direction with a predetermined stroke. Between the large diameter portion 58a formed at the proximal end of the press-fit pin 58 and the inner top surface of the guide hole 55c so as to be positioned in the guide hole 55c provided in the spherical valve supply nozzle 55, a biasing member is provided. A coil spring 59 is interposed. The press-fit pin 58 is always biased in the backward (immersion) direction. A guide hole 56b having the same diameter and concentricity as the guide hole 55c of the spherical valve supply nozzle 55 is formed at the center of the press pin 56, and the press pin 60 passes through the guide hole 56b. The base end surface is in contact with the fixed support base 36, and the tip end surface is in contact with the base end surface of the press-fit pin 58.
[0041]
A distal end portion of a supply pipe 61 having flexibility is connected to the distal end portion of the spherical valve supply nozzle 55 by an attachment ring 62. The base end portion of the supply pipe 61 is connected to a hopper (not shown) that contains a large number of spherical valves 93. The opening of the supply pipe 61 communicates with a supply passage 55e formed in the spherical valve supply nozzle 55, and the spherical valves 93 are supplied one by one from the supply passage 55e to the guide hole 55b.
[0042]
A receiving hole 55f is formed at the tip of the spherical valve supply nozzle 55 so as to be positioned slightly forward and below the supply passage 55e. The opening of the storage hole 55f on the supply passage 55e side is It is formed with a smaller diameter than other parts. A retaining ball 63 as a retaining member of the element is accommodated in the accommodation hole 55f. A screw hole 62a is formed in the mounting ring 62 so as to correspond to the receiving hole 55f, and a coil spring 65 is interposed between the bolt 64 screwed into the screw hole 62a and the locking ball 63. . Then, the locking ball 63 is always urged to a position where the spherical valve 93 is locked by the coil spring 65. When the press-fit pin 58 is retracted by the coil spring 59, the front end surface 58b of the press-fit pin 58 is retracted to a position where the opening on the guide hole 55b side of the supply passage 55e is opened, and the front end surface 58b A space in which only one spherical valve 93 can be accommodated is defined in the guide hole 55b between the locking ball 63 and the locking ball 63.
[0043]
A linear guide groove 55g is formed on the outer peripheral surface of the spherical valve supply nozzle 55 in a direction parallel to the axial direction thereof, and a front end portion of a bolt 66 screwed to the liner 51 is engaged with the guide groove 55g. The spherical valve supply nozzle 55 is prevented from rotating in the liner 51. The rotation prevention of the liner 51 with respect to the mounting cylinder 23g is performed by a key and a key groove (not shown).
[0044]
The inner diameter D1 of the guide hole 55b is set slightly larger than the inner diameter D2 of the caulking hole 92f, and the diameter D3 of the spherical valve 93 is set slightly larger than the inner diameter D2 of the caulking hole 92f. The symbols such as D1, D2, and D3 are not shown.
[0045]
(Operation of spherical valve press-fitting mechanism 17G)
Next, the operation of the spherical valve press-fitting mechanism 17G configured as described above will be described with reference to FIGS.
[0046]
In FIG. 4, the ram 6 moves backward, the liner 51 is pushed to the most advanced position by the angular spring 54, and the spherical valve supply nozzle 55 and the pressing pin 56 are pushed to the most advanced position by the angular spring 57, and further press-fitted. The pin 58 is pushed by the coil spring 59 to the last retracted position. In this state, a space for accommodating one spherical valve 93 is formed between the distal end surface 58b of the press-fit pin 58 and the locking ball 63, and only one spherical valve 93 is accommodated in the space. A valve body material 92 is accommodated on the holder 49 side, and a caulking hole 92f formed in the throttle shaft 92d is held at a position corresponding to the guide hole 55b of the spherical valve supply nozzle 55. In this state, when the ram 6 is advanced, FIG. And FIG. As shown in FIG. 4, the tip end surface 55h of the spherical valve supply nozzle 55 is brought into contact with the tip end surface 92e of the throttle shaft 92d, and the guide hole 55b and the caulking hole 92f correspond to be concentric on the same axis.
[0047]
In the state shown in FIG. 5, when the ram 6 is further advanced, the spherical valve supply nozzle 55 and the pressing pin 56 are stopped at predetermined positions by the valve body material 92, so that the ram 6, the fixed support base 36, the mounting cylinder 23g, the liner 51 and the position regulating ring 52 are advanced. After the liner 51 has moved a little, it comes into contact with the mounting ring 62 and is stopped. Thereafter, the fixed support base 36, the pressing pin 60, and the press-fit pin 58 are advanced. As a result, as shown in FIG. 6, the spherical valve 93 is moved forward in the guide hole 55b of the spherical valve supply nozzle 55 by the tip surface 58b of the press-fit pin 58, and the spherical valve 93 is moved as shown in FIG. It is press-fitted into the caulking hole 92f.
[0048]
FIG. 6 and FIG. 7A show the press-fitted state of the spherical valve 93. After the press-fitting is completed, the related members are retracted by the retraction of the ram 6, and the related members are shown in FIG. The original position shown in FIG. In this restoration process, only one spherical valve 93 is again supplied to a predetermined space of the guide hole 55b in the spherical valve supply nozzle 55 to prepare for the next press-fitting operation.
[0049]
After the spherical valve supply nozzle 55 has been retracted, the valve body material 92 into which the spherical valve 93 has been press-fitted is operated so that the knockout pin 35 is advanced and pushed out from the accommodation hole 49a of the holder 49 to transfer the material. The mechanism 15 is transferred to the next spherical valve caulking mechanism 17H.
[0050]
(Spherical valve caulking mechanism 17H)
The spherical valve caulking mechanism 17H has a die inside the holder 48 as shown in FIG. 71, 72 is housed. As shown in FIG. Die 7 1's On the outside, a receiving hole 7 for receiving the valve body material 92 is provided. 1 a is formed, and a guide hole 71b through which the knockout pin 73 is inserted is formed inside. Die 7 1 A crimping surface 71c for caulking the spherical valve 93 to the caulking hole 92f is formed in the intermediate portion by forging the tip end portion of the throttle shaft 92d of the valve body material 92 so as to reduce the diameter inward in the radial direction. The valve body material 92 is accommodated in the opposite direction by the accommodation hole 71a and the caulking surface 71c. A recess 73 a for avoiding interference with the spherical valve 93 is formed at the tip of the knockout pin 73.
[0051]
Accordingly, when the ram 6 is advanced with the valve body material 92 inserted in the opposite direction into the receiving hole 71a of the die 71, the distal end surface of the punch 38 is pressed against the base end surface of the valve body material 92, and FIG. As shown in (b), the outer peripheral edge of the tip of the throttle shaft 92d is pressed against the caulking surface 71c, and the tip edge of the throttle shaft 92d is caulked to the outer peripheral surface of the spherical valve 93. In this way, the plunger valve 94 is manufactured.
[0052]
When the knockout pin 73 is advanced after the punch 38 is retracted, the plunger valve 94 is discharged from the die 71, dropped onto a shooter (not shown), and stored in the collection box.
(Effect of multi-stage forging machine)
The effects of the multistage forging and forming apparatus configured as described above will be listed together with the configuration.
[0053]
(1) In the above-described embodiment, the first and second caulking hole forging forming mechanisms 17D and 17E of the multistage forging and forming apparatus 17 forcibly form the caulking hole 92f in the tip end surface 92e of the throttle shaft 92d of the valve main body 92 in two stages. I tried to do it. For this reason, the formation position of the caulking hole 92f coincides with the central axis of the throttle shaft 92d. After the spherical valve 93 is press-fitted into the caulking hole 92f and caulked, the assembly position of the spherical valve 93 is centered at an appropriate position. Can be held.
[0054]
(2) In the above embodiment, the spherical valve 93 can be easily press-fitted one by one into the caulking hole 92f of the valve main body 92 by incorporating the spherical valve press-fitting mechanism 17G into the multistage forging and forming apparatus.
[0055]
(3) In the above embodiment, the spherical valve caulking mechanism 17H is provided on the next process side of the spherical valve press-fitting mechanism 17G, and the spherical valve 93 press-fitted into the caulking hole 92f is caulked. Operation can be performed quickly following a series of forging steps.
[0056]
(4) In the above-described embodiment, the spherical valve press-fitting mechanism 17G is accommodated in the mounting cylinder 23g so as to be reciprocable and is urged forward by the angular spring 54, and is accommodated in the liner 51. A spherical valve supply nozzle 55 urged forward by a spring 57, a press-fit pin 58 housed in the spherical valve supply nozzle 55 and always urged in a backward direction by a coil spring 59, and a spherical valve supply nozzle 55 The supply pipe 61 and the locking sphere 63 are configured to supply the spherical valve 93 one by one into the guide hole 55b one by one. For this reason, the spherical valves 93 can be supplied and press-fitted into the caulking holes 92f of the valve body material 92 one by one with a simple configuration.
[0057]
(5) The angular spring 54 is compressed and stored by the advancement of the fixed support base 36, and the angular spring 57 is compressed and the pressing pin 56 is pressed forward. For this reason, the front end surface 55h of the spherical valve supply nozzle 55 is properly pressed against the front end surface 92e of the throttle shaft 92d, and the press-fitting of the spherical valve 93 into the caulking hole 92f is performed smoothly without dropping off.
(Second Embodiment)
A second embodiment of the present invention will be described with reference to FIGS.
[0058]
The members having the same functions as those of the first embodiment are denoted by the same reference numerals, and the description of the configuration and operation is omitted or simplified.
The spherical valve press-fitting mechanism 17G according to the second embodiment has the above-described spherical valve supply nozzle 55, press-fit pin 58, supply pipe 61, locking ball 63 and the like mounted on the die block 2 side. The base plate of the spherical valve supply nozzle 55 is connected to the receiving plate 46, and the spherical valve supply nozzle 55 also functions as a knockout pin of the valve body material 92. Grooves 55 i and 55 j are formed above and below the spherical valve supply nozzle 55 in parallel with the axial direction. The tip of the supply pipe 61 extends through the die holder 27 from the groove 55i of the spherical valve supply nozzle 55 to the guide hole 55b. The locking sphere 63 is accommodated in a storage cylinder 80 attached to the die holder 27, the tip of the storage cylinder 80 extends into the groove 55j, and a part of the locking sphere 63 extends to the guide hole 55b.
[0059]
A pressed member 81 is connected to the base end portion of the press-fit pin 58, and the pressed member 81 is moved forward and backward by an operating lever 82 that is connected to be tiltable by a connecting pin 83. An operating rod 84 passes through the guide hole 26b of the die liner 26, its inner end is in contact with the operating lever 82, and its outer end protrudes toward the mounting cylinder 23g. An operating block 85 is fixed to the front end of the holder 37 by a bolt 86, and an operating element 87 fitted in the operating block 85 is disposed so as to correspond to the operating rod 84. A punch 38 is supported on the holder 37.
[0060]
In FIG. 11, the punch 38 is retracted, the spherical valve supply nozzle 55 and the press-fit pin 58 are held in the last retracted position, and one spherical valve 93 is engaged with the front end surface 58b of the press-fit pin 58 and the locking ball in the guide hole 55b. 63 shows a state of being accommodated in between. Further, the valve body material 92 is accommodated in the accommodation hole 49 a of the holder 49 in the reverse direction halfway by the material transfer mechanism 15.
[0061]
In this state, when the ram 6 is advanced and the punch 38 and the operation block 85 are advanced, the valve body material 92 is pushed into the accommodation hole 49 a of the holder 49 by the advance operation of the punch 38. In synchronization with this, the operating rod 84 is pushed and the operating lever 82 is rotated counterclockwise about the connecting pin 83, and the press-fit pin 58 is advanced through the pressed member 81. Accordingly, the spherical valve 93 is press-fitted into the caulking hole 92f of the valve body material 92 as shown in FIG.
[0062]
When the press-fitting operation is completed, the punch 38 is retracted as shown in FIG. 13, the press-fit pin 58 is retracted by the square spring 57, the branch knockout pin 45 is advanced, and the receiving plate 46 and the spherical valve supply nozzle 55 are advanced. Then, the valve body material 92 in the holder 49 is discharged, and the process proceeds to the next caulking process by the spherical valve caulking mechanism 17H.
[0063]
In the second embodiment, since the spherical valve press-fitting mechanism 17G is mounted on the die side, all of the mechanisms on the ram 6 side can have substantially the same configuration, the number of parts is reduced, the structure is simplified, Cost can be reduced.
[0064]
In the second embodiment, since the supply pipe 61 and the locking sphere 63 are arranged at predetermined positions on the spring receiving member 30 side, it is not necessary to use flexible piping as the supply pipe 61, and the spherical valve 93 is fed out. Can be performed stably. Other effects of the second embodiment are the same as the effects of the first embodiment.
[0065]
In addition, the said embodiment can also be actualized as follows.
○ The configuration of the plunger valve 94 is changed as shown in FIG. 14 (a), or a cylindrical valve body is used instead of the spherical valve 93 as shown in FIG. 14 (b) or FIG. 14 (c). And Also good.
[0066]
The press-fitting pin 58 and the pressing pin 60 may be integrally formed.
The spherical valve supply nozzle 55 and the pressing pin 56 may be integrally formed.
[0067]
【The invention's effect】
As detailed above, claims 1 to 8 The invention described in Plunger valve Processing of caulking holes in the body material and against caulking holes valve The element can be inserted and caulked efficiently. The plunger valve can be molded quickly The
[Brief description of the drawings]
FIG. 1 is a plan sectional view of a caulking hole forging forming mechanism and a material standby gripping mechanism showing a first embodiment embodying the present invention.
FIG. 2A is a cross-sectional view showing a shallow caulking hole forging process, FIG. 2B is a cross-sectional view showing a deep caulking hole forging process, and FIG. 2C is a cross-sectional view showing a standby state of an element.
FIG. 3 is a plan sectional view of a spherical valve press-fitting mechanism and a spherical valve caulking mechanism.
FIG. 4 is an enlarged vertical sectional view in the initial stage of the press-fitting process.
FIG. 5 is an enlarged longitudinal sectional view in the middle of the press-fitting process.
FIG. 6 is an enlarged vertical sectional view at the end of the press-fitting process.
7A is an enlarged partial longitudinal sectional view at the end of a spherical valve press-fitting process, and FIG. 7B is an enlarged partial longitudinal sectional view of a caulking process.
FIG. 8 is a schematic cross-sectional plan view showing the entire multistage forging and forming apparatus.
FIG. 9 is a plan sectional view showing a forging mechanism of the valve body material.
FIG. 10 is a cross-sectional plan view showing a caulking hole forging mechanism, a spherical valve press-fitting mechanism, and a spherical valve caulking mechanism of a valve body material.
FIG. 11 is a longitudinal sectional view of a spherical valve press-fitting mechanism according to a second embodiment at the initial stage of a press-fitting process.
FIG. 12 is a longitudinal sectional view of a middle stage of a spherical valve press-fitting process according to a second embodiment.
FIG. 13 is a longitudinal sectional view of a spherical valve press-fitting process completed according to the second embodiment.
14A, 14B, and 14C are partial cross-sectional views showing other examples of parts.
15 (a), (b), (c), (d), (e), (f), and (g) are explanatory views showing manufacturing steps of a conventional plunger valve, respectively.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Machine stand, 2 ... Die block, 6 ... Ram, 15 ... Material transfer mechanism, 17A, 17B ... Correction surface forging mechanism as forging forming mechanism, 17C ... Drawing shaft forging mechanism as forging forming mechanism, 17D, 17E ... Caulking hole forging mechanism, 17G ... element (spherical valve) insertion mechanism, 17H ... element (spherical valve) caulking mechanism, 23g ... mounting cylinder, 35, 47, 73 ... knockout pin, 38 ... punch, 49 ... holder, 49a , 55f, 71a ... receiving hole, 50 ... valve Element (spherical valve) press-fitting mechanism, 51 ... liner, 51c, 55b ... guide hole, 54, 57, 59, 65 ... angular spring as a biasing member, coil spring, 55 ... valve Element (spherical valve) supply nozzle, 55e ... supply passage, 55h, 58b ... tip surface, 55i ... groove, 58 ... press-fit pin, 61 ... valve Element (spherical valve) supply pipe, 63... Locking ball as a locking member, 71... Die, 71 b... Pin guide hole, 71 c. ... Ranger valve body material, 92e ... tip surface, 92f ... caulking hole, 93 ... valve A spherical valve as an element.

Claims (8)

A forging mechanism (17A, 17B) for forcing tapered correction surfaces (92b, 92c) to both ends of the plunger valve body material (92) obtained by cutting the wire into a predetermined length;
A forging mechanism (17C) for forcing a throttle shaft (92d) at one end of the valve body material (92);
A caulking hole forging mechanism (17D, 17E) that forcibly molding a caulking hole (92f) in the end surface (92e) of the throttle shaft (92d) of the valve body material (92);
A valve element insertion mechanism (17G) for inserting a spherical or cylindrical valve element (93) into the caulking hole (92f) of the valve body material (92);
Valve element caulking mechanism (17H) for caulking the valve element (93) to the valve body material (92) by pressing the outer peripheral edge of the caulking hole (92f) of the valve body material (92) against the outer peripheral surface of the valve element (93) )
Each of the mechanisms (17A to 17H) includes a common die block (2) attached to the upper surface of the machine base (1), and a common ram (movable back and forth toward the die block (2)). 6), and a material transfer mechanism (15) is provided between the die block (2) and the ram (6) to transfer the valve body material (92) to the mechanism of the next stroke, plunger valve molding equipment, characterized by being configured to continuously operate each mechanism as a series of mechanisms. In Claim 1, the said caulking hole forging forming mechanism (17D, 17E) is the 1st caulking hole forging forming mechanism (17D) which forms a shallow caulking hole (92f) in the end surface (92e) of a valve main body raw material (92). A plunger valve molding device that is provided on the downstream side of this mechanism and that is constituted by a second crimping hole forging molding mechanism (17E) that forges the shallow crimping hole (92f) into the deep crimping hole (92f). The element insertion mechanism (17G) according to claim 1, wherein the element insertion mechanism (17G) includes a holder (49) provided in the die block (2) and a valve body material (92) accommodated in the accommodation hole (49a) of the holder (49). And an element press-fitting mechanism (50) provided on the ram (6) and press-fitting elements (93) into the caulking holes (92f) of the valve body material (92) one by one. Plunger valve forming device. The element press-fitting mechanism (50) according to claim 3,
  A liner (51) that can be reciprocated within a predetermined stroke range in a mounting cylinder (23g) that is cantilever-fixed to the ram (6), and is biased in a protruding direction by a biasing member (54);
  An element supply that is inserted into the guide hole (51c) formed in the axial direction at the center of the liner (51) so as to be reciprocable within a predetermined stroke range and is urged in the protruding direction by the urging member (57). A nozzle (55);
  A guide hole (55b) formed in the axial direction at the center of the element supply nozzle (55) is inserted so as to be reciprocable within a predetermined stroke range, and is urged in the backward direction by the urging member (59). Press-fit pin (58);
  An element supply pipe (61) connected to a supply passage (55e) provided on the outer peripheral surface of the tip of the element supply nozzle (55) and supplying the element (93) to the guide hole (55b);
  The element supply nozzle (55) is accommodated in an accommodation hole (55f) provided slightly in front of the supply passage (55e) with respect to the outer peripheral surface of the tip portion, and is supplied into the guide hole (55b). A locking member (63) for preventing the element (93) from dropping off;
  An urging member (65) provided in the accommodation hole (55f) and urging the locking member (63) to a position that always protrudes into the guide hole (55b);
  The guide hole (55b) between the front end surface (58b) of the press-fit pin (58) and the locking member (63) in a state where the press-fit pin (58) is in the last retracted position by the biasing member (59). ) Forming a space for accommodating only one element (93) in
  When the ram (6) is further advanced in a state where the tip end surface (55h) of the element supply nozzle (55) is positioned by the valve body material (92) by the advance of the ram (6), the press-fitting pin ( 58) moves the guide hole (55b) of the element supply nozzle (55) in the protruding direction to press-fit the element (93) into the caulking hole (92f).
And a plunger valve forming device. The element caulking mechanism (17H) according to any one of claims 1 to 4,
  A die (71) provided in the die block (2) and having an accommodation hole (71a) for accommodating the valve body material (92) in the opposite direction;
  A knockout pin (73) that is inserted into the pin guide hole (71b) of the die (71) and pushes out the received valve body material (92);
  A punch (38) provided on the ram (6) and pressing the proximal end of the valve body material (92);
  A tapered circumferential caulking surface (71c) formed between the accommodation hole (71a) of the die (71) and the pin guide hole (71b);
  By pressing the outer end of the valve body material (92) with the punch (38), the outer peripheral edge of the caulking hole (92f) is press-fitted into the caulking surface (71c) and contracted to the outer peripheral surface of the element (93). Forging in the radial direction and crimping
And a plunger valve forming device. A plurality of knockout pins (35, 47, 73) provided for each mechanism with respect to the die block (2) according to claim 4 or 5 are simultaneously operated by a common drive mechanism, and are provided in the ram (6). The plunger valve forming apparatus is configured such that the punch (38) and the element supply nozzle (55) are actuated simultaneously by the longitudinal movement of the ram (6). The element insertion mechanism (17G) according to claim 1, wherein the element insertion mechanism (17G) is provided with respect to a machine base (1) and a holder (49) provided in the die block (2) and accommodating the valve body material (92) in the reverse direction. Punch provided on the ram (6) mounted so as to be movable back and forth toward the die block (2) and pushing the valve body material (92) received in the receiving hole (49a) of the holder (49) (38) and an element press-fitting mechanism (50) provided on the die block (2) side and press-fitting elements (93) one by one into the caulking hole (92f) of the valve body material (92). Plunger valve forming device. The cylindrical element supply nozzle (55) according to claim 7, wherein the element press-fitting mechanism (50) is provided so as to be able to protrude and retract with a predetermined stroke with respect to the accommodation hole (49a) of the holder (49) and also serves as a knockout pin. )When,
  A guide hole (55b) formed in the axial direction at the center of the element supply nozzle (55) is inserted so as to be able to reciprocate within a predetermined stroke range, and is urged backward by an urging member (57). Press-fit pin (58);
  An element supply pipe (61) connected to a groove (55i) provided in the axial direction on the outer peripheral surface of the tip of the element supply nozzle (55) and supplying the element (93) to the guide hole (55b) at a predetermined position When,
  The element (93) accommodated in the accommodating cylinder (80) provided slightly in front of the supply pipe (61) at a predetermined position of the holder (49) and supplied into the guide hole (55b). A locking member (63) for preventing falling off;
  An urging member (65) provided in the housing cylinder (80) and urging the locking member (63) to a position that always protrudes into the guide hole (55b);
  The guide hole (55b) between the front end surface (58b) of the press-fit pin (58) and the locking member (63) in a state where the press-fit pin (58) is in the last retracted position by the biasing member (57). ) Forming a space for accommodating only one element (93) in
  As the ram (6) advances, the punch (38) pushes the valve body material (92) into the receiving hole (49a) of the holder (49), and the press-fit pin (58) is moved to the element. The guide hole (55b) of the supply nozzle (55) is moved in the protruding direction to press-fit the element (93) into the caulking hole (92f).
And a plunger valve forming device.

Images