JP2011230248A - Installation device of valve cotter and retainer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an installation device of a valve cotter and a retainer capable of supplying a part attached with the valve cotter and the retainer in large quantities, by improving installation efficiency and reliability in the valve cotter and the retainer.SOLUTION: This installation device includes a retainer carrying means 2 capable of carrying while aligning the retainer, a retainer transfer means 5 capable of transferring the carried retainer up to an installation position A with the valve cotter, a valve cotter carrying means 1 capable of carrying a pair of right-left valve cotters up to a standby position B positioned under the installation position A, an installation means 3 having a pushing-in bar 7 moving up to a hole part of the retainer existing in the installation position A by successively taking out the valve cotter existing in the standby position B, and a presser bar 18 for maintaining positioning in the standby position B by preventing the valve cotter existing in the standby position B from floating on the installation position A side except for a moving time by the pushing-in bar 7.

Description

  The present invention relates to a valve cotter and a retainer assembling apparatus that can be assembled by fitting a pair of left and right valve cotters into holes of the retainer.

  For example, a valve drive mechanism in a four-cycle internal combustion engine such as an automobile engine pushes up a retainer by a valve spring, and a valve shaft in the retainer is tightened and fixed to the center by a valve cotter. However, such a valve cotter and retainer are often pre-assembled (temporarily assembled) and handled as one part in order to improve the handling in the assembly operation of the valve drive mechanism. As an assembly device for a valve cotter and a retainer for automatically performing temporary assembly, for example, a device disclosed in Patent Document 1 has been proposed.

JP-A-1-188239

  However, the conventional valve cotter and retainer assembly apparatus has the following problems. In recent years, for example, in an automobile engine, the number of valves per cylinder, which is a large number of four or more, has become prominent, and a valve cotter and a retainer are assembled to cope with this. There is a need to supply a large amount to automobile assembly factories and the like. However, the above conventional assembly apparatus has a problem that the assembly efficiency and reliability of the valve cotter and the retainer are insufficient, and there is a problem in supplying a large amount of parts assembled with the valve cotter and the retainer. .

  The present invention has been made in view of such circumstances, can improve the assembly efficiency and reliability of the valve cotter and the retainer, and can supply a large amount of parts assembled with the valve cotter and the retainer. An object of the present invention is to provide an assembly device for a valve cotter and a retainer.

  The invention according to claim 1 is a valve cotter and retainer assembling apparatus that can be assembled by fitting a pair of left and right valve cotters into a hole portion of the retainer, and retainer conveying means that can convey the retainer while aligning; Retainer transporting means capable of transporting the retainer transported by the retainer transporting means to the assembly position with the valve cotter, and a large-diameter semicircular surface on the lower surface and a small-diameter semicircular surface on the upper surface while aligning the valve cotter. In which the outer peripheral surface can be conveyed outward and the pair of left and right valve cotters can be conveyed to a standby position that is substantially linear and substantially below the assembly position in a horizontal plane. A cotter conveying means, and a valve cotter moving means for sequentially cutting out the pair of left and right valve cotters at the standby position and moving them to the holes of the retainer at the assembly position. An assembly means for fitting the pair of left and right valve cotters fitted into the holes of the retainer, and a pair of left and right valve cotters in the standby position other than during movement by the valve cotter movement means Positioning maintaining means for preventing the floating to the position side and maintaining the positioning at the standby position is provided.

  According to a second aspect of the present invention, in the valve cotter / retainer assembling apparatus according to the first aspect, the valve cotter moving means is composed of a push rod that can move up and down in the longitudinal direction, and the push rod is raised. The pair of left and right valve cotters in the standby position can be moved to the assembly position.

  According to a third aspect of the present invention, in the valve cotter / retainer assembly apparatus according to the first or second aspect, the positioning maintaining means is a restraint capable of moving vertically in a longitudinal direction at a position above the standby position. It comprises a rod, and when moved by the valve cotter moving means, the valve cotter can be moved to an assembly position while being sandwiched between the holding rod and the valve cotter moving means.

  According to a fourth aspect of the present invention, in the valve cotter / retainer assembling apparatus according to the first or second aspect, the positioning maintaining means can be opened and closed at a position above the standby position and closed. The opening / closing means urged by the valve cotter, and when moving by the valve cotter moving means, the opening / closing means can be opened to allow movement to the assembly position of the valve cotter.

  According to the first aspect of the present invention, the valve cotter moving means for sequentially cutting out the pair of left and right valve cotters in the standby position and moving them to the hole of the retainer in the assembled position is moved by the valve cotter moving means. The pair of left and right valve cotters that are assembled by fitting them into the holes of the retainer and the pair of left and right valve cotters in the standby position are lifted to the assembly position side, except when moved by the valve cotter moving means. And maintaining the positioning at the standby position, the assembly efficiency and reliability of the valve cotter and the retainer can be improved, and the parts assembled with the valve cotter and the retainer A large amount can be supplied.

  According to the second aspect of the present invention, the valve cotter moving means is composed of a push bar that can be moved vertically in the longitudinal direction, and the pair of left and right valve cotters in the standby position are moved to the assembly position by raising the push bar. Since it is possible, the valve cotter can be smoothly and stably moved from the standby position to the assembly position with a simple configuration.

  According to the third aspect of the present invention, the positioning maintaining means comprises the holding bar that can move up and down in the longitudinal direction at a position above the standby position, and when moved by the valve cotter moving means, the valve cotter is connected to the holding bar. Since it can move to the assembly position while being pinched by the valve cotter moving means, the pair of left and right valve cotters in the standby position can be prevented from floating to the assembling position side except during movement by the valve cotter moving means. In addition, during the movement by the valve cotter moving means, the valve cotter can be moved more stably.

  According to the fourth aspect of the present invention, the positioning maintaining means is composed of opening / closing means that can be opened / closed at a position above the standby position and biased in the closing direction. Since the opening / closing means can be opened to allow movement of the valve cotter to the assembly position, it is possible to prevent the pair of left and right valve cotters in the standby position from being lifted to the assembly position side with a simpler configuration. .

The top view which shows the assembly apparatus of the valve cotter and retainer in embodiment of this invention It is a front view which shows the assembly apparatus of the valve cotter and a retainer, Comprising: The II-II arrow directional view in FIG. The top view which shows the structure of the index (valve cotter moving means) and its vicinity in the assembly apparatus of the valve cotter and the retainer Front view showing assembly means in the valve cotter and retainer assembly device Side view showing assembly means in assembly apparatus of valve cotter and retainer Schematic diagram showing the vicinity of the assembly position and standby position in the valve cotter and retainer assembly device Schematic diagram showing valve cotter moving means (push bar) and partition plate in the valve cotter and retainer assembly device Side view showing partition plate in assembly apparatus of valve cotter and retainer The top view which shows the cover plate and attachment / detachment piece in the assembly apparatus of the valve cotter and the retainer The top view which shows the state which removed the cover plate in the assembly apparatus of the valve cotter and the retainer Front view showing positioning maintaining means (holding bar) in the valve cotter and retainer assembly device Side view showing slide guide, slide block, etc. in assembly device of valve cotter and retainer The front view which shows the inversion board of the carrying-out means in the assembly apparatus of the valve cotter and the retainer Front view showing cam plate of unloading means in assembly apparatus of valve cotter and retainer Schematic diagram for explaining the assembly process for the retainer of the valve cotter in the valve cotter and retainer assembly device The perspective view which shows the valve cotter and retainer assembled | attached with the assembly apparatus of the valve cotter and retainer The side view which shows the positioning maintenance means (opening-closing means) in the assembly apparatus of the valve cotter and retainer which concerns on the 2nd Embodiment of this invention. The top view which shows the positioning maintenance means (opening-closing means) in the assembly | attachment apparatus of the valve cotter and retainer which concerns on the 2nd Embodiment. The front view which shows the positioning maintenance means (opening-closing means) in the assembly | attachment apparatus of the valve cotter and retainer which concern on the 2nd Embodiment. The side view which shows the positioning maintenance means (opening-closing means is a closed state) in the assembly | attachment apparatus of the valve cotter and retainer which concern on the 2nd Embodiment. The side view which shows the positioning maintenance means (opening-closing means is an open state) in the assembly | attachment apparatus of the valve cotter and retainer which concern on the 2nd Embodiment. The schematic diagram which shows the positioning maintenance means in the assembly apparatus of the valve cotter and retainer which concerns on other embodiment of this invention. The schematic diagram which shows the positioning maintenance means in the assembly | attachment apparatus of the valve cotter and retainer which concerns on other embodiment of this invention.

Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.
The valve cotter and retainer assembling apparatus according to the first embodiment can be assembled by fitting the valve cotter Wa to the retainer Wb (see FIG. 16). As shown in FIGS. Cotter conveying means 1, retainer conveying means 2, assembly means 3, unloading means 4, index 5 (retainer transfer means), push rod 7 (valve cotter moving means), and restraining rod 18 (positioning maintaining means) ).

  Note that the valve cotter Wa and the retainer Wb, which are to be assembled, constitute a valve drive mechanism in a four-cycle internal combustion engine such as an automobile engine. Specifically, as shown in FIG. 16, the valve cotter Wa is composed of a pair of left and right hollow members, and in a state where the left and right valve cotters Wa are matched, the lower surface has an annular shape with a large diameter, and the upper surface has a small diameter. The retainer Wb is formed with a conical hole portion Wba that can be inserted and fitted in a state where the pair of left and right valve cotters Wa are aligned with each other. . However, when the valve cotter Wa is fitted in the hole Wba of the retainer Wb, it is temporarily assembled and can be handled as one component by being inverted upside down.

  The valve cotter conveying means 1 is composed of conveying means (such as a reciprocating linear feeder) that can convey the valve cotter Wa while aligning the left and right pairs as a pair, and can accommodate a large number of valve cotters Wa in a random manner. The container 1a has a chute 1b and a conveyance path 1c that convey the valve cotter Wa in the container 1a to the assembly position while aligning them. As shown in FIG. 2, the valve cotter transport means 1 according to this embodiment is configured so that the accommodating portion 1a is supported by the front and rear leaf springs Ia and Ib while the valve cotter Wa is sequentially moved by the vibration of the accommodating portion 1a. The housing portion 1aa is configured to be replenished, and the second housing portion 1aa is supported by front and rear leaf springs (not shown) while the valve cotter Wa is moved toward the chute 1b and the conveyance path 1c by the vibration of the second housing portion 1aa. It is possible to send them out in sequence.

  The chute 1b is composed of a substantially linear conveying member, and can transmit vibration to the conveying path 1c to convey the valve cotter Wa to the assembly position A via the conveying path 1c. A lid plate h that is detachable along the longitudinal direction is attached to the upper portion of the transport path 1c, and a lid plate 14 as shown in FIG. Yes. A detachable piece 15 is attached to the lid plate 14, and the detachable piece 15 is removed from the lid plate 14, and the upper portion in the vicinity of the standby position B can be opened by removing the knob portion 15a. Has been.

  Thus, the chute 1b and the conveyance path 1c can convey the valve cotter Wa in a state where the large-diameter semicircular surface is the lower surface and the small-diameter semicircular surface is the upper surface and the outer peripheral surface is directed outward. In addition, the pair of left and right valve cotters Wa can be continuously conveyed to a standby position B (a position below the assembly position A with respect to the retainer Wb) in a substantially linear and substantially horizontal plane. The conveyance can be performed more smoothly and accurately.

  The retainer transport means 2 is composed of transport means that can transport the retainer Wb while aligning the retainer Wb. The retainer Wb can accommodate a large number of retainers Wb in a random manner, and the retainer Wb in the retainer 2a is aligned. And a chute 2b that conveys the assembly position. The retainer transporting means 2 according to the present embodiment is composed of a reciprocating linear feeder supported by a leaf spring (not shown), like the valve cotter transporting means 1, and continuously holds the retainer Wb by vibration. It can be transported.

  The valve cotter Wa is in a stable state with the large-diameter semicircular surface as the lower surface and the small-diameter semicircular surface as the upper surface and with the outer peripheral surface facing outward, while being partitioned by the partition plate 13, Is conveyed to a standby position B (a space formed between the upper end surface of the push-in bar 7 and the lower end surface of the holding bar 18 as described later), and the retainer Wb has a conical hole. The portion Wba is conveyed in a row by the chute 2b of the retainer conveying means 2 with the large diameter side of the portion Wba facing downward. In particular, the pair of left and right valve cotters Wa can be conveyed by a chute 1b of the valve cotter conveying means 1 in a substantially straight line and in a substantially horizontal plane.

  On the other hand, an index 5 (retainer transfer means) made of a disk-like member that can be rotated on the top plate 6 by driving the motor M1 is disposed on the tip side of the chute 2b. A plurality of notches 5a are formed at substantially equal intervals in the direction. The notch 5a is sized to fit the retainer Wb. The retainer Wb reaching the tip of the chute 2b is fitted into the notch 5a, and the motor M1 is intermittently operated in this state (in this embodiment). 45 degrees), the retainers Wb are cut out one by one and can be transferred to the assembly position A (position above the standby position B) with the valve cotter Wa.

  That is, the index 5 is formed of a so-called turntable, and is intermittently rotationally driven to cut out the front row of the retainer Wb that is continuously transported by the chute 2b of the retainer transporting means 2, It is configured so that it can be slid along the upper surface of the plate 6 and conveyed to the assembly position A. In addition, a guide member G is disposed along the periphery of the outer periphery of the index 5 to prevent the retainer Wb inserted into the notch 5a from being displaced outward during the conveyance process.

  Further, a concave notch (not shown) is formed in a connection portion of the top plate 6 with the chute 2b, and is fitted so that the tip of the chute 2b enters the notch (the vibration of the chute 2b is reduced). The transfer surface of the retainer Wb at the tip of the chute 2b is set to a height substantially equal to the upper surface of the top plate 6. Thereby, the retainer Wb can be more reliably and stably transferred from the chute 2b to the notch 5a of the index 5.

Reference numeral 4 in FIG. 4 denotes unloading means (which will be described in detail later), and in the process in which the index 5 is intermittently rotated, the retainer Wb is fitted with the valve cotter Wa. Can be taken out by the carrying-out means 4. A position (a chute in this embodiment) between a position where the carry-out means 4 is disposed (a position 180 ° downstream of the assembly position A in the present embodiment) and a portion to which the chute 2b is connected. A hole H is provided in the top plate 6 at a position 45 ° before the part to which 2b is connected. Thereby, the unloading means 4
The assembled retainer Wb and valve cotter Wa can be discharged from the hole H and taken out directly as an off-line product without the need to drive the retainer Wb and the valve cotter Wa inadvertently installed. If it is not carried out, it can be dropped into the hole H and excluded from the index 5.

  The assembling means 3 includes a push rod 7 (valve cotter moving means) that sequentially cuts out the pair of left and right valve cotters Wa at the standby position B and moves them to the hole Wba of the retainer Wb at the assembling position A. The pair of left and right valve cotters Wa moved by the push rod 7 (valve cotter moving means) is fitted into the hole Wba of the retainer Wb and assembled. Specifically, as shown in FIGS. 4 to 10, the assembling means 3 is connected in the order of the base plates 8, 9, 12, and has the assembling block 11, the cylinder 10, and the like, and is assembled integrally. The assembly unit is configured by an assembly unit (see FIG. 5), and the assembly unit is attached to a fixing member 6 a (see FIG. 3) fixed to the top plate 6. It is supposed to be removable.

  The assembly block 11 is formed by separating a pair of left and right blocks by a predetermined distance to form a separation portion 11a, and a partition plate 13 is erected at the center of the separation portion 11a. The spacing portion 11a is a space extending in the vertical direction, and is dimensioned to allow the pair of valve cotters Wa at the standby position B to pass upward. Further, a cover plate 14 as shown in FIG. 9 is attached to the upper part of the assembly block 11, and a through-hole having substantially the same diameter as that of the separation part 11 a is located at the upper part of the separation part 11 a in the cover plate 14. A hole 14a is formed.

  Further, a detachable piece 15 having a knob portion 15a is detachably attached to the lid portion 14. As shown in FIG. 6, the detachable piece 15 is formed above the conveying surface in the conveying path 1 c (more specifically, above the position before the standby position B), and the detachable piece 15 is covered with a lid portion. 14 can be used to clean the standby position B and the near position, and even if the part is clogged in the transport process, the pair of clogged valve cotters Wa is removed. And so on.

  The push rod 7 (valve cotter moving means) is disposed in the separating portion 11a and can be moved up and down in the longitudinal direction (vertical direction in the figure) by the operation of the cylinder 10, and the upper end surface thereof is the transport path 1c. And a position (post-movement position) substantially equal to the upper surface of the cover plate 14 (upper surface of the top plate 6) (position after movement: the position before movement: see FIG. 15 (c)). : Refer to FIGS. 15D and 15E) and can move back and forth.

  Thus, in the position before the push rod 7 moves, the valve cotter Wa can be conveyed to the upper end surface (standby position B) of the push rod 7 and the cylinder 10 is operated to move the push rod 7 upward. As a result, the pair of valve cotters Wa are moved. When the push rod 7 reaches the post-movement position, the pair of valve cotters Wa reach the assembly position A and are assembled in the hole Wba of the retainer Wb.

  As shown in FIG. 8, the partition plate 13 is composed of a plate-like member integrally formed with a protruding portion 13a protruding upward. As shown in FIGS. 6 and 7, the partition plate 13 is erected at a substantially central position of the separating portion 11a. However, the protruding portion 13 a reaches the upper opening of the through hole 14 a in the lid portion 14. Thus, when the valve cotter Wa is moved upward from the standby position B toward the assembly position A by the push rod 7, the state where the valve cotter Wa is partitioned left and right by the partition plate 13 is maintained until just before being assembled to the retainer Wb. The Rukoto.

  A slit 7a extending in the longitudinal direction is formed at the center of the upper end side of the push rod 7, so that the partition plate 13 can enter the slit 7a. This prevents the push bar 7 from interfering with the partition plate 13 in the process of moving up and down. Further, as shown in FIG. 10, the assembly block 11 is provided with a pair of detection sensors 16 (small high-frequency sensors) that can detect the pair of left and right valve cotters Wa at the standby position B. It is configured to detect whether or not the valve cotter Wa is at the position B.

  When the holding rod 18 (positioning maintaining means) is not moved by the push rod 7 (valve cotter moving means), the pair of left and right valve cotters Wa at the standby position B is lifted to the assembly position A side (upper in the figure). Is maintained at the standby position B, and is assembled to the clamping unit 17 as shown in FIGS. The clamping unit 17 is extended in the vertical direction, with a cylinder 19, a bracket 20 that moves up and down by the operation of the cylinder 19, a connecting rod 22 with the bracket 20 attached to the upper end and a plate 24 attached to the lower end. The slide guide 21 mainly includes a slide block 23 slidable along the slide guide 21, and a spring 25 interposed between the bracket 20 and the slide block 23.

  The slide block 23 is connected to the bracket 20 and the cylinder 19 via a spring 25. When the cylinder 19 is operated and its operating rod is extended, the slide block 23 slides downward along the slide guide 21 and the operation is performed. When the rod contracts, it is configured to slide upward along the slide guide 21. Further, a bar-shaped holding bar 18 extending downward is formed on the lower surface of the slide block 23, and both the slide block 23 and the holding bar 18 can be moved up and down.

  Further, the holding unit 17 is provided with a stopper 26 through which the holding bar 18 is inserted, and a large-diameter stopper portion 18a is provided at the base end of the holding bar 18 (the connection portion with the slide block 23). Is formed. Thus, when the slide block 23 slides downward and the stopper portion 18a reaches the stopper 26 and interferes with each other, further downward sliding of the holding bar 18 is restricted. .

  The holding bar 18 in the present embodiment can be moved up and down in the axial direction (vertical direction in the figure) by the operation of the cylinder 19, and the lower end surface thereof is higher than the upper end surface of the valve cotter Wa except when the valve cotter Wa is moved. It is in a state of being stopped at a slightly upper position. Accordingly, a standby position B can be formed between the upper surface of the push rod 7 at the pre-movement position and the holding rod 18, and a pair of left and right at the standby position B (the position of the upper surface of the push rod 7). When the valve cotter Wa tries to float to the assembly position A side (upward in the drawing), the valve cotter Wa can interfere with the lower surface of the holding bar 18 to prevent the lifting.

  That is, since the force of the valve cotter Wa sequentially sent from the conveyance path 1c is applied to the valve cotter Wa at the standby position B, a force to lift to the assembly position A side acts. Therefore, the upward movement of the valve cotter Wa at the standby position B can be restricted by the holding bar 18 to prevent the valve cotter Wa from being lifted to the assembly position A side. Furthermore, the holding bar 18 according to this embodiment can move to the assembly position A while holding the valve cotter Wa between the holding bar 18 and the pushing bar 7 when moving by the pushing bar 7 (valve cotter moving means). It is configured as follows.

Next, the operation of the push bar 7 (valve cotter moving means) and the holding bar 18 (positioning maintaining means) according to the present embodiment will be described with reference to FIGS. 15 (a) to 15 (e).
First, the retainer Wb is transferred to the assembling position A by rotating the index 5 by 1 pitch with the presser bar 18 maintained at the upper limit position (position where the lower end surface of the presser bar 18 is higher than the upper end surface of the retainer Wb). ((A) in the figure). Thereafter, by actuating the cylinder 19, the slide block 23 is lowered together with the bracket 20, the connecting rod 22 and the plate 24, and the lower end side of the holding bar 18 is inserted into the hole ba of the retainer Wb ((b) in the figure). . In this state, the operation of the cylinder 19 is stopped. At this time, the lower surface of the holding bar 18 is in contact with the upper surface of the push bar 7 and the slide block 23 is stopped at a position above the plate 24 by a predetermined dimension.

  Then, on the condition that a sensor (not shown) detects that the state shown in FIG. 5B has been reached, the cylinder 10 is operated to lower the push rod 7, and its upper end surface is the same as the transport surface of the transport path 1c. The height is assumed ((c) in the figure). At this time, the holding bar 18 moves down following the pushing bar 7 by its own weight and the urging force of the spring 25 until the stopper portion 18a reaches the stopper 26. After the lowering, the holding bar 18 is set so that its lower end surface is stopped at the same height as the lower surface of the detachable piece 15 or slightly higher than the lower surface.

  Thus, a standby position B that is continuous with the conveyance path of the conveyance path 1c can be formed between the upper end surface of the push bar 7 and the lower end surface of the holding bar 18. That is, since the transport surface of the transport path 1c and the upper end surface of the push rod 7 are set to the same height, the leading valve cotter Wa transported in the transport path 1c is formed on the upper end surface of the push rod 7. The standby position B is reached. In addition, the lower end surface of the holding rod 18 is positioned with a slight clearance above the valve cotter Wa conveyed to the standby position B, and the valve cotter Wa at the standby position B is lifted upward. Can be prevented.

  Thereafter, the cylinder 10 is operated to raise the push rod 7 on condition that the detection sensor 16 (see FIG. 10) detects that the pair of left and right valve cotters Wa are positioned at the standby position B. Then, while holding the valve cotter Wa at the standby position B with the holding rod 18, the valve cotter Wa is moved and assembled into the hole Wba of the retainer Wb at the assembly position A ((d) in the figure). Here, in the process of moving the push bar 7, the valve cotter Wa is pressed from above by the dead weight of the holding bar 18 and the urging force of the spring 25 and is held between the push bar 7 and the holding state is maintained. The valve cotter Wa is moved to the assembly position A while being done. The push bar 7 is raised until the upper end surface thereof is flush with the upper surface of the top plate 6.

  Then, by operating the cylinder 19 on the condition that the push rod 7 has reached the rising end by a sensor (not shown), the slide block 23 is raised and restrained together with the bracket 20, the connecting rod 22 and the plate 24. The rod 18 is brought to the upper limit position ((e) in the figure). In this state, since the upper end surface of the push bar 7 is maintained at the same height as the upper surface of the top plate 6, when the index 5 rotates, the assembled valve cotter Wa and retainer Wb are transferred to the next process well. Can be made.

  The unloading means 4 is used for unloading the valve cotter Wa and the retainer Wb assembled by the cooperation of the push-in bar 7 and the holding bar 18 and transported by the index 5 and then to the next process. 3 and FIG. 13 and FIG. 14, the reversing plate 29 is configured to be rotatable about a rotating shaft 31. The reversing plate 29 is formed with a plurality of insertion portions 29a in the circumferential direction, and can be accommodated by inserting the valve cotter Wa and the retainer Wb assembled to each insertion portion 29a.

  The reversing plate 29 is connected to the operating rod of the cylinder C via the arm 32, and is rotatable about the rotating shaft 31 by operating the cylinder C. In addition, a one-way clutch 33 is interposed at a connection portion of the arm 32 with the rotating shaft 31, and when the operating rod of the cylinder C is expanded and contracted, the force is transmitted to the reversing plate 29 to rotate, and the cylinder When the operating rod in C is extended, the force is not transmitted to the reversing plate 29, so that the reversing plate 29 can rotate in a certain direction.

  Further, a cam plate 30 having a plurality of recesses 30a formed in the circumferential direction is fixed to the reversing plate 29. A cam follower 34 supported by an arm 36 is fitted into the recess 30a of the cam plate 30. Yes. A spring 35 is connected to the arm 36 so that the cam follower 34 can be pressed toward the concave portion 30a by the biasing force. As a result, the reversing plate 29 is accurately positioned at a predetermined pitch.

  Thus, when the reversing plate 29 is rotated in a fixed direction at a predetermined pitch, the cylinder 28 is operated to operate the pusher 27, and one of the pushing portions (27a, 27b) formed at both ends of the pusher 27. The extruding portion 27a inserts the valve cotter Wa and retainer Wb transferred at the index 5 into the inserting portion 29a of the reversing plate 29, and the other extruding portion 27b inserts the vertically inverted valve cotter Wa and retainer Wb into the inserting portion. Remove from 29a.

  According to the above embodiment, it has the push rod 7 (valve cotter moving means) that sequentially cuts out the pair of left and right valve cotters Wa at the standby position B and moves them to the hole Wba of the retainer Wb at the assembly position A. The assembling means 3 for fitting the pair of left and right valve cotters Wa moved by the push bar 7 (valve cotter moving means) into the hole Wba of the retainer Wb, and the push bar 7 (valve cotter moving means) When the pair of left and right valve cotters Wa at the standby position B is not lifted to the assembly position A side (upward) and the positioning at the standby position B is maintained. Therefore, the assembly efficiency and reliability of the valve cotter Wa and the retainer Wb can be improved, and a large amount of parts assembled with the valve cotter Wa and the retainer Wb can be supplied. That.

  The valve cotter moving means is composed of a push rod 7 that can move up and down in the longitudinal direction, and the pair of left and right valve cotters Wa at the standby position B can be moved to the assembly position A by raising the push rod 7. Therefore, the valve cotter Wa can be moved smoothly and stably from the standby position B to the assembly position A with a simple configuration. Further, the positioning maintaining means is composed of a pressing bar 18 that can move up and down in the longitudinal direction at a position above the standby position B, and when moving by the pushing bar 7 (valve cotter moving means), the valve cotter Wa is moved to the pressing bar. 18 and the push rod 7 (valve cotter moving means), and can be moved to the assembly position A. Therefore, the pair of left and right at the standby position B is not moved by the push rod 7 (valve cotter moving means). It is possible to prevent the valve cotter Wa from being lifted to the assembly position A side, and to move the valve cotter Wa more stably during the movement by the push rod 7 (valve cotter moving means).

Next, a second embodiment of the present invention will be described.
The valve cotter and retainer assembling apparatus according to the present embodiment can be assembled by fitting the valve cotter Wa to the retainer Wb (see FIG. 16), as in the first embodiment. As shown in FIG. 5, the pusher bar 7 is provided as a valve cotter moving means, and the opening / closing means 37 is provided as a positioning maintaining means. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  The opening / closing means 37 is disposed in place of the holding bar 18 in the first embodiment. The opening / closing means 37 can be opened and closed at a position above the standby position B and is urged in the closing direction. In order to maintain the positioning at the standby position B by preventing the pair of left and right valve cotters Wa at the standby position B from floating to the assembly position A side (upward) except during movement by the valve cotter moving means). Is.

  Specifically, the opening / closing means 37 is provided in each of the left and right assembly blocks 11, and is fixed to a pair of arms 39 that can swing around the swing axis L and to the respective distal ends of the arms 39. The stopper piece 38 and the tension spring 40 that urges the arm 39 in the closing direction are mainly configured, and a pair of stopper pieces 38 in a normal state (a state in which the arm 39 is closed by the urging force of the tension spring 40). Is set above the valve cotter Wa at the standby position B.

  As a result, when the pair of left and right valve cotters Wa at the standby position B tries to float up to the assembly position A side (upward in the figure), the stopper piece 38 can cause interference to prevent the lift. When the push rod 7 (valve cotter moving means) is moved, the opening / closing means 37 is opened by swinging the arms 39 outward against the urging force of the tension spring 40, and the valve cotter Wa is assembled. Movement to position A can be allowed.

  According to the present embodiment, the positioning maintaining means is configured by the opening / closing means 37 that can be opened and closed at a position above the standby position B and is biased in the closing direction, and the push rod 7 (valve cotter moving means). Since the opening / closing means 37 can be opened to allow the movement of the valve cotter Wa to the assembly position A, the clamping unit 17 and the like in the first embodiment can be dispensed with, and it is simpler. With the configuration, the pair of left and right valve cotters Wa at the standby position B can be prevented from floating to the assembly position A side (upward).

  Although the present embodiment has been described above, the present invention is not limited to these embodiments, and the pair of left and right valve cotters Wa in the standby position B are sequentially cut out to sequentially hold the hole Wba of the retainer Wb in the assembly position A. Assembly means 3 for fitting the pair of left and right valve cotters Wa moved by the valve cotter movement means into the holes Wba of the retainer Wb, and valve cotter movement means. In addition to the movement by the above, if there is a positioning maintaining means for preventing the pair of left and right valve cotters Wa at the standby position B from floating to the assembly position A side and maintaining the positioning at the standby position B It ’s enough.

  For example, instead of the holding bar 18 and the opening / closing means 37, the positioning maintaining means may be configured as shown in FIGS. That is, in the conveyance end wall of the valve cotter Wa at the standby position B, as shown in FIG. 22, an overhang portion α protruding at a position above the valve cotter Wa is formed, or as shown in FIG. It is also possible to form a recess β that is recessed at the position of the side surface of the cotter Wa. Even in these cases, the pair of left and right at the standby position B is not moved by the valve cotter moving means (the push rod 7). It is possible to prevent the valve cotter Wa from being lifted to the assembly position A side and maintain the positioning at the standby position B.

  A pair of left and right valve cotters in the standby position are sequentially cut out and moved to the holes of the retainer in the assembly position, and the pair of left and right valve cotters moved by the valve cotter moving means are connected to the retainer. The pair of left and right valve cotters in the standby position are prevented from floating to the assembly position side except during the movement by the assembly means and the valve cotter moving means to be fitted and assembled in the hole portion. As long as the valve cotter and the retainer are assembled with a positioning maintaining means for maintaining the positioning, the apparatus can be applied to a device with a different external shape or with another function added.

DESCRIPTION OF SYMBOLS 1 Valve cotter conveyance means 2 Retainer conveyance means 3 Assembling means 4 Unloading means 5 Index (Retainer transfer means)
6 Top plate 7 Push rod (Valve cotter moving means)
8 Base plate 9 Base plate 10 Cylinder 11 Assembly block 12 Base plate 13 Partition plate 14 Lid plate 15 Detachment piece 16 Detection sensor 17 Holding unit 18 Holding rod (positioning maintaining means)
19 Cylinder 20 Bracket 21 Slide guide 22 Connecting rod 23 Slide block 24 Plate 25 Spring 26 Stopper 27 Pusher 28 Cylinder 29 Reversing plate 30 Cam plate 31 Rotating shaft 32 Arm 33 One-way clutch 34 Cam follower 35 Spring 36 Arm 37 Opening and closing means 38 Stopper piece 39 Arm 40 Tension spring A Assembly position B Standby position Wa Valve cotter Wb Retainer

Claims (4)

In an assembly device for a valve cotter and a retainer that can be assembled by fitting a pair of left and right valve cotters into the hole of the retainer,
Retainer transporting means capable of transporting the retainers while aligning them;
Retainer transporting means capable of transporting the retainer transported by the retainer transporting means to an assembly position with the valve cotter;
While the valve cotters are aligned, the large-diameter semicircular surface can be conveyed with the lower surface and the small-diameter semicircular surface as the upper surface, and the outer peripheral surface can be conveyed outward, and the pair of left and right valve cotters are substantially A valve cotter transporting means capable of transporting to a standby position located below the assembly position in a linear and substantially horizontal plane;
The valve cotter moving means that sequentially cuts out the pair of left and right valve cotters at the standby position and moves to the hole of the retainer at the assembly position, and the pair of left and right valve cotters moved by the valve cotter moving means. An assembling means to be fitted into the hole of the retainer and assembled;
Positioning maintaining means for preventing the pair of left and right valve cotters at the standby position from floating to the assembly position and maintaining the positioning at the standby position, except during movement by the valve cotter moving means,
A device for assembling a valve cotter and a retainer.   The valve cotter moving means is composed of a push rod that can move up and down in the longitudinal direction, and the pair of left and right valve cotters in the standby position can be moved to the assembly position by raising the push rod. The valve cotter / retainer assembling apparatus according to claim 1.   The positioning maintaining means includes a holding bar that can move up and down in the longitudinal direction at a position above the standby position, and the valve cotter is moved by the valve cotter moving means when the valve cotter is moved by the holding bar and the valve cotter moving means. The valve cotter / retainer assembling apparatus according to claim 1 or 2, wherein the assembling apparatus can move to an assembling position while being sandwiched between.   The positioning maintaining means is composed of opening / closing means that can be opened / closed at a position above the standby position and biased in the closing direction, and when the valve cotter moving means moves, the opening / closing means is opened. 3. The valve cotter and retainer assembling apparatus according to claim 1, wherein the valve cotter can be allowed to move to an assembling position.

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