JP2006150566A - Circlip installation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a circlip installation device capable of easily and efficiently installing a circlip on a circlip control part of a circlip assembly tool. <P>SOLUTION: A circlip feed part 11 and a circlip assembly part 41 are provided, and a plurality of circlips 121 fed to a magazine 16 of the circlip feed part 11 is taken out one by one, and fed to the circlip assembly part 41. In the circlip assembly part 41, a circlip 121 is contracted and installed on a circlip retaining part 146 of a circlip installation tool 130 inserted in an installation tool insertion hole 57. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a circlip mounting device, and more specifically, a circlip that mounts a circlip on a circlip assembling jig that assembles a circlip in a clip groove formed in a piston pin hole for preventing the piston pin from coming off. The present invention relates to a mounting device.

  The piston pin and connecting rod connecting part in the engine has a piston pin inserted into the piston pin hole of the piston, and a small end portion of the connecting rod is inserted into the piston pin. Further, the piston pin is used to prevent the piston pin from coming out of the piston pin hole. A circlip is mounted in each clip groove formed at both ends of the hole.

  Conventionally, as a circlip assembling jig for assembling a circlip in a clip groove formed in a piston pin hole, a cylindrical member provided so as to be coaxially connected to a piston pin hole drilled in a piston, A guide passage that is fixed to the side of the member and communicates with the inside of the cylindrical member, a pressing member, and a mounting member that is provided inside the tubular member so as to be displaceable in the axial direction thereof, and is placed in the guide passage. The inserted circlip is pressed by the pressing member, slides in the guide passage and is inserted into the cylindrical member, and then the circlip is pressed by the movement of the mounting member to displace the cylindrical member to move the piston. A clip mounting device that is mounted in a clip groove of a pin hole is known (see, for example, Patent Document 1).

  Further, a circlip holding means and a press-fitting member comprising a pair of operating levers that hold the circlip in a state of being pressed and contracted to a device main body that is brought into contact with the surface of the piston and facing the open end of the piston pin hole There is known a circlip assembling jig for assembling a circlip into a clip groove by pushing a circlip held by a circlip clamping means into a piston pin hole by a press-fitting member (for example, a patent) Reference 2).

  According to these clip mounting devices and circlip assembling jigs, it is possible to obtain a subassembly in which a piston pin, a connecting rod and a circlip are assembled in advance to the piston.

  Therefore, in the assembly of the engine using this subassembly, the piston of the subassembly is inserted into the bore of the cylinder block, and then the large end of the connecting rod is assembled to the crankpin of the crankshaft that has been previously incorporated in the cylinder block. The engine can be assembled.

JP-A-10-156640 Utility Model Registration No. 2530726

  However, the above-described clip mounting device of Patent Document 1 and the piston circlip mounting jig of Patent Document 2 are arranged such that the circlip is attached to the piston pin hole in a state where the piston is assembled to the bore hole of the cylinder block, for example, as in a horizontally opposed engine. It is difficult to apply when fitting and assembling into the clip groove formed on.

  A specific description will be made with reference to FIG. 16 showing a cross-sectional view of the relevant part. A piston pin hole 106 is formed in the piston 105 inserted into the bore hole 102 of the cylinder block 101, and the piston pin hole 106. Annular clip grooves 107a and 107b are formed in the vicinity of both ends of each. A cylindrical piston pin 111 with a hollow hole 112 formed therein is inserted into the piston pin hole 106 and a circlip 121 that can contact the end surface 113 of the piston pin 111 is fitted into the piston pin hole 106 so that the piston pin 111 can be pulled out. It is preventing.

  The piston pin 111 is used to connect the piston 105 and the small end portion 119 of the connecting rod 118 in advance by assembling the large end portion of the connecting rod 118 to each crank pin of the crankshaft (not shown) and connecting the crankshaft of the subassembly to the left and right cylinders. A clip on one end side formed in the piston pin hole 106 in this state by inserting between the blocks 101 and combining the left and right cylinder blocks 101 and inserting the small end portions 119 of the connecting rods 118 into the bore holes 102 respectively. The piston 105 with the circlip 121 fitted in the groove 107a is inserted into the bore hole 102 of each cylinder block 101, and then the piston pin 111 is inserted into the piston pin hole 106 from the other end side, and the connecting rod is connected to the piston pin 111. 118 through the small end 119 Thereafter, the assembled circlip 121 to the clip groove 107b formed at the other end of the piston pin hole 106.

  Since the circlip 121 is assembled by hand through the service hole 103 formed in the cylinder block 101, the operation is troublesome and requires skill of the operator, and there is a concern about work efficiency.

  For these reasons, the present inventors have proposed a circlip assembling jig that can simplify and increase the efficiency of the circlip assembling work by Japanese Patent Application No. 2003-411574.

  The outline of the circlip assembling jig will be described with reference to FIGS.

  17 is an overall view showing an outline of the circlip assembling jig 130, FIG. 18 is a cross-sectional view taken along the line XX of FIG. 17, and FIGS. FIG. 21 is a cross-sectional view taken along line XI-XI in FIG. 20, and FIG. 22 is a cross-sectional view taken along line XII-XII in FIG.

  The circlip assembling jig 130 has a cylindrical outer cylinder 131 and a cylindrical jig body 141 that can move in the axial direction in the outer cylinder 131, and the outer cylinder 131 includes the piston pin hole 106 and the service hole 103. And has a tip 132 formed in an annular shape.

  The jig body 141 is provided with a gripping portion 142 at the base end, and a circlip mounting portion 145 is formed on the distal end side protruding from the distal end 132 of the outer cylinder 131.

  The circlip mounting portion 145 includes a circlip holding portion 146, a circlip opening portion 147, and a piston pin insertion portion 149 that are sequentially extended coaxially with the jig body 141 as shown in FIGS. ing. The circlip holding part 146 has a cylindrical outer peripheral surface 146a, a part of which is cut away to form a circlip abutting surface 146b orthogonal to the axial direction, and an edge of the circlip abutting surface 146b A flat surface 146d extending in the axial direction from 146c is formed, and a circlip engaging groove 146e continuous in the axial direction is formed in the flat surface 146d.

  On the other hand, the circlip 121 has an annular part 122 formed in a C shape as indicated by phantom lines in FIG. 21 and claw parts 123a and 123b formed at both ends of the annular part 122, respectively. The claw portions 123a and 123b that have been provided and reduced in diameter are held in the reduced diameter state by being locked to the side surfaces 146f and 146g of the circlip locking groove 146e.

  The circlip opening portion 147 has an outer peripheral surface 147a that is continuous with the outer peripheral surface 146a of the circlip holding portion 146, and a part of the circlip opening portion 147 is continuous with the flat surface 146d of the circlip holding portion 146 through the step portion 147b. An open groove 147e having a groove width larger than the circlip engaging groove 146e is formed on the flat surface 147d continuously with the circlip engaging groove 146e. ing. As shown in FIG. 22, the groove width of the open groove 147e is set larger than the outer width of both claws 123a and 123b of the unloaded circlip 121, and the circlip 121 can be moved in the axial direction.

  A piston pin contact portion 148 that can contact the end surface 113 of the piston pin 111 is formed at the tip of the circlip opening portion 147 by an arc-shaped stepped portion, and a piston pin insertion portion 149 is formed in the piston pin contact portion 148. Has been. The piston pin insertion portion 149 has a semi-cylindrical shape that can be inserted into the hollow hole 112 of the piston pin 111, and a positioning groove 150 is formed at the tip.

  A method of using the circlip assembling jig 130 configured as described above will be described.

  The circlip 121 is mounted on the circlip holding unit 146 with the circlip mounting unit 145 protruding from the tip 132 of the outer cylinder 131. As shown in FIG. 21, the attached circlip 121 has the claw portions 123a and 123b locked to the side surface portions 146f and 146g of the circlip locking groove 146e, and is constrained to a reduced diameter state, thereby being annular portion 122. Is fitted to the outer peripheral surface 146a of the circlip holding portion 146.

  On the other hand, the large end of the connecting rod 118 is assembled to each crankpin of the crankshaft in advance, the crankshaft of the subassembly is inserted between the left and right cylinder blocks 101, and the left and right cylinder blocks 101 are combined. The small end portions 119 are respectively inserted into the bore holes 102, and the pistons 105 in which the circlips 121 are fitted are inserted into the bore holes 102 in one end side clip grooves 107 a formed in the piston pin holes 106. Next, the piston pin 111 is inserted into the piston pin hole 106 from the other end side until it abuts on the circlip 121 fitted in the clip groove 107 a, and the small end portion 119 of the connecting rod 118 is inserted into the piston pin 121.

  Next, the operator passes the circlip assembly jig 130 with the circlip 121 mounted on the circlip mounting part 145 from the piston pin insertion part 149 side through the service hole 103 of the cylinder block 101 as shown in FIG. Are inserted into the piston pin hole 106 of the piston 105. Further, as shown in FIG. 24, the piston pin insertion portion 149 is inserted into the hollow hole 112 of the piston pin 121 so that the piston pin contact portion 148 contacts the end surface 113 of the piston pin 111.

  In a state where the piston pin insertion portion 149 is inserted into the hollow hole 112 of the piston pin 111, the outer peripheral surface 149a of the piston pin insertion portion 149 is engaged with the inner peripheral surface of the hollow hole 112, and the piston pin insertion portion 149 and The circlip opening part 147 and the circlip holding part 146 formed on the same axis are held on the same axis as the piston pin hole 106.

  When the outer cylinder 131 is pushed along the axial direction in a state where the piston pin abutting portion 148 contacts the end surface 113 of the piston pin 111 and the jig main body 141 is prevented from entering, only the outer cylinder 131 becomes a cylinder. It is pushed into the service hole 103 and the piston pin hole 106 of the block 101 and abuts against the annular portion 122 of the circlip 121 held by the circlip holding portion 146 by the tip 132 thereof, and this annular portion 122 is connected to the circlip holding portion. It pushes toward the circlip opening part 147 side along the outer peripheral surface 146a of 146. By this pushing, the claw portions 123a and 123b of the circlip 121 move along the side surfaces 146f and 146g of the circlip locking groove 146e, and come out to the opening groove 147e side of the circlip opening portion 147.

  The circlip 121 from which the claw portions 123a and 123b are pulled out from the circlip engaging groove 146e in the circlip opening portion 147 is released from the constriction in a reduced diameter state and is expanded in diameter by its elastic restoring force, and is shown in FIG. In this way, a small gap is formed between the clip pin 107 and the circlip mounting portion 145.

  Thereafter, the circlip assembling jig 130 is extracted from the hollow hole 112 of the piston pin 111 and the service hole 103 of the cylinder block 101, and the circlip 121 is attached.

  According to the circlip assembling jig 130 configured as described above, the circlip assembling jig 130 in which the circlip 121 is mounted and held on the circlip mounting portion 145 is passed through the service hole 103 of the cylinder block 101 and the piston. 105 is inserted into the piston pin hole 106, the piston pin insertion portion 149 is inserted into the hollow hole 112 of the piston pin 111, and the piston pin contact portion 148 is brought into contact with the end surface 113 of the piston pin 111. The circlip 121 can be attached to the clip groove 107b by a simple operation of pushing the cylinder 131 into the piston pin hole 106. By using such a circlip assembling jig 130, the assembling work of the circlip 121 can be easily performed without requiring the skill of the operator, and the work efficiency can be improved.

  Here, in order to further improve the working efficiency, there is a demand for efficiently attaching the circlip 121 to the circlip assembling jig 130.

  Accordingly, an object of the present invention made in view of such a point is to provide a circlip mounting device that can easily and efficiently mount a circlip on a circlip mounting part of a circlip assembling jig. .

  In the invention of the circlip mounting device according to claim 1, which achieves the above object, a clip groove for assembling a circlip in which a claw portion is bent is formed at both ends of an annular portion formed in a C shape. An outer cylinder that can be inserted into the piston pin hole, and a claw portion that engages the tip of a jig body that is movably inserted into the outer cylinder to hold the circlip in a reduced diameter state in the axial direction. A circlip holding portion having a continuous circlip locking groove, and a circlip holding portion mounted with a circlip held in a reduced diameter by locking the both claw portions in the circlip locking groove. The circlip is inserted into the piston pin hole and moved in the axial direction by pushing the circlip at the tip of the outer cylinder so that the claw is pulled out of the circlip locking groove, and a circlip that elastically restores is attached to the clip groove Sacrifice A circlip mounting apparatus for mounting a circlip on an assembling jig, which has a tapered guide hole and an assembling jig insertion hole in which a circlip mounting position is continuously formed in the tapered guiding hole, and a circlip supply unit The circlip supplied one by one from the circlip set position to the circlip setting position is pushed toward the circlip mounting position side by the circlip pushing imparting portion along the tapered guide hole, and the reduced diameter is given. While the circlip is moved to the circlip mounting position, the both claw portions are inserted into the circlip locking grooves of the circlip assembling jig set in advance in the assembling jig insertion hole. The claw portions of the circlip, which are inserted and released from the reduced diameter application at the circlip mounting position and elastically restored, are engaged with the circlip engaging grooves of the circlip holding portion to support the circlip. Characterized by comprising a circlip assembly portion for mounting the clip to the circlip retaining portion of the circlip assembly jig.

  According to a second aspect of the present invention, in the circlip mounting device according to the first aspect, the taper guide hole is formed from a circlip set position in which the unloaded circlip supplied from the circlip supply unit can be accommodated. The diameter of the circlip is reduced as it moves to the clip mounting position, and the end of the circlip mounting position side is smaller in diameter than the circular portion of the circlip in the mounted state in which the both claw portions are locked in the circlip locking groove. A guide surface is formed, and the assembly jig insertion hole is continuous with the circlip mounting position side end of the tapered guide hole and has a diameter larger than that of the circlip mounting position side end of the tapered guide hole. The circlip push-applying part has a substantially cylindrical shape and the tip part capable of contacting the circular part of the circlip is located at the circlip set position. A lift plate disposed in the tapered guide hole so as to be reciprocally movable between a retracted retracted position and an advanced end position corresponding to the circlip mounting position, and the lift plate from the retracted position to the advanced end position and the advanced end position. A lift plate driving portion that moves from the position to the retracted position, and the circlip supplied to the circlip set position is tapered at the tip of the lift plate that is moved from the retracted position to the forward end position by the lift plate driving portion. And the circlip is pushed to the mounting position.

  According to a third aspect of the present invention, in the circlip mounting apparatus according to the second aspect, an assembling jig mounting detection for detecting a circlip assembling jig inserted and set in the assembling jig insertion hole. And a lift plate is moved from the retracted position to the forward end position by the lift plate driving unit based on the detection of the set of the circlip assembly jig by the assembly jig mounting detection means.

  According to a fourth aspect of the present invention, in the circlip mounting device according to any one of the first to third aspects, a protrusion that can be fitted between both claw portions of the circlip has a circlip in the tapered guide hole. It is characterized by being formed continuously from the mounting position to the circlip mounting part side.

  According to a fifth aspect of the present invention, in the circlip mounting device according to any one of the first to fourth aspects, the circlip supply unit includes a magazine that houses a plurality of circlips, and the circlip is supplied from the magazine. The circlip supply passage communicating from the upstream portion to the circlip set position of the circlip assembly portion and the circlip supplied from the magazine to the upstream portion of the circlip supply passage are cut out one by one and supplied to the circlip And a circlip pushing section for supplying the circlip set position along the path.

  According to a sixth aspect of the present invention, in the circlip mounting apparatus according to the fifth aspect, the circlip supply unit is a circlip that is supplied from the upstream portion of the circlip supply path to the circlip set position by the circlip pushing unit. A circlip phase restricting portion is provided that is fitted between both the claw portions to restrict the rotation of the circlip.

  According to a seventh aspect of the present invention, in the circlip mounting apparatus according to the fifth or sixth aspect, the magazine has a cylindrical shape in which a plurality of circlips are stacked in the axial direction and accommodates both the circlips stored therein. It is characterized in that it is provided with a ridge that fits between the claw portions and regulates the rotation of the circlip.

  The invention according to claim 8 is the circlip mounting device according to any one of claims 1 to 7, comprising a pair of assembling jig guide members in which the opposing guide portions are recessed and contacted. The assembly jig guide member approaches to form a guide hole for guiding the circlip assembly jig inserted into the circlip mounting position by the mutual guide portion, and the assembly jig guide member An assembly jig positioning portion is provided in which the guide hole is opened by separation.

  According to the invention of claim 1, the circlip supplied one by one from the circlip supply unit to the circlip set position in the circlip assembling unit is attached to the circlip along the tapered guide hole by the circlip pushing portion. By pushing to the position side, the circlip moves to the circlip mounting position on the circlip assembling jig while reducing the diameter. Then, while the reduced circlip moves to the circlip mounting position, both claws are inserted into the circlip locking groove of the circlip assembling jig set in advance in the assembling jig insertion hole. Is inserted. Then, at the circlip mounting position, the claw portions are locked in the circlip locking grooves by elastic recovery of the circlip, and the circlip is mounted on the circlip holding portion of the circlip assembling jig. Therefore, the circlip can be easily attached to the circlip assembling jig by inserting and setting the circlip holding part of the circlip assembling jig at the circlip mounting position in the circlip assembling part of the circlip mounting device. And can be mounted efficiently.

  The invention of claim 2 shows a more specific configuration of the circlip assembling part and the circlip pushing imparting part, and the circlip supplied from the circlip supplying part to the circlip setting position is driven by a lift plate. The circlip is reduced in diameter while moving along the taper guide hole by pushing the circlip to the circlip mounting position at the tip of the lift plate that moves from the retracted position to the forward end position by the part, and the circlip assembling treatment Both claws are fitted into the circlip locking groove of the tool, and the provision of the reduced diameter to the circlip is released at the large-diameter circlip mounting position. Thereby, both claw parts can be locked in the circlip locking groove by elastic recovery of the circlip, and the circlip can be mounted on the circlip holding part of the circlip assembling jig.

  According to the invention of claim 3, the set of the circlip assembling jig is detected by the assembling jig mounting detecting means, and the lift plate is moved from the retracted position to the forward end position by the lift plate driving unit based on the detection. By mounting the circlip on the circlip assembling jig, the circlip can be easily mounted on the circlip assembling jig.

  According to the fourth aspect of the present invention, the provision of the protruding portion that fits between the claw portions of the circlip in the tapered guide hole allows the circlip to be restricted from rotating so that the circlip can be held in the same phase. The circlip can be more reliably attached to the circlip assembling jig.

  According to the invention of claim 5, the circlip supplied to the upstream portion of the circlip supply path from the magazine that accommodates the plurality of circlips is cut out one by one by the circlip pusher and pushed along the circlip supply path. It can be moved and supplied to the circlip set position of the circlip assembly part.

  According to the invention of claim 6, since the circlip is supplied to the circlip set position from the upstream portion of the circlip supply path by the circlip pushing unit by the circlip phase regulating unit, Can be supplied to the circlip set position of the circlip assembling part while maintaining the position of the circlip. Can be reliably prevented.

  According to the invention of claim 7, since the rotation of the circlip is regulated by the protrusion in the magazine, the circlip can be supplied to the upstream portion of the circlip supply path while maintaining the same phase. It is possible to reliably prevent a circlip from being attached to the circlip assembling jig due to a phase shift.

  According to the eighth aspect of the present invention, the circlip assembling jig can be easily inserted by guiding the circlip assembling into the circlip mounting position by guiding the circlip to the guide hole. By opening the circlip, the circlip assembling jig can be easily extracted from the circlip mounting position without dropping the circlip.

  Embodiments of a circlip mounting apparatus according to the present invention will be described below with reference to FIGS.

  FIG. 1 is an overall explanatory view of a circlip mounting device 1 according to the present embodiment. The circlip mounting device 1 of this embodiment includes a circlip supply unit 11, a circlip assembly unit 41, and an assembly jig positioning unit 71, and a plurality of the circlip supply units 11 supplied to the magazine 16 of the circlip supply unit 11. The circlips 121 are supplied to the circlip assembling part 41 one by one, and the circlip 121 is mounted on the circlip assembling jig 130 in the circlip assembling part 41. The circlip assembling jig 130 is the same as that described in the section of the problem to be solved by the above-described invention, and the same reference numerals are given and detailed description thereof is omitted.

  Next, the circlip supply unit 11, the circlip assembling unit 41, and the assembling jig positioning unit 71 will be sequentially described.

  2 is a cross-sectional view taken along the line I-I of FIG. 1 showing an outline of the circlip supply unit 11, FIG. 3 is an enlarged view of a part A of FIG. 2, FIG. 3 is a sectional view taken along line IV-IV in FIG. 3, FIG. 7 is a sectional view taken along line VV in FIG. 3, and FIG. 8 is a circlip 121 in the magazine 16 of the circlip supplying section 11. It is explanatory drawing of the circlip supply rod 31 for supplying the.

  As shown in FIGS. 3 and 5, the circlip supply unit 11 includes a lower plate 13 and an upper plate 14 that are supported by a support unit 12 disposed opposite to the table 10 and extend in the horizontal direction. A circlip supply path 15 is formed by a guide groove 13a that is continuously recessed from the upstream portion 15A to which the circlip 121 is supplied on the upper surface of the lower plate 13 to the downstream end and the lower surface 14a of the upper plate 14. The circlip supply path 15 has a substantially rectangular cross-sectional shape having a width slightly larger than the outer diameter of the expanded unloaded circlip 121 and a height slightly larger than the thickness of the circlip 121, and a downstream end will be described later. It communicates with the circlip supply port 60 of the circlip assembling part 41.

  An opening 14b that communicates with the upstream portion 15A of the circlip supply passage 15 opens in the upper plate 14, and a lower end portion is fitted into the opening 14b so as to communicate with the upstream portion 15A of the circlip supply passage 15. A magazine 16 is erected on the upper plate 14.

  The magazine 16 has an arc-shaped peripheral wall 17 that can accommodate the annular portion 122 of the unloaded circlip 121 that has been expanded in diameter as shown in FIG. 6, and the open end of the peripheral wall 17 is closed and closed. A protruding strip 18a that can be fitted between the claw portions 123a and 123b of the clip 121 is continuous in the axial direction by a positioning guide 18 having a substantially T-shaped cross section formed continuously in the vertical direction, that is, in the axial direction. It is formed in a cylindrical shape. A plurality of circlips 121 are accommodated in the magazine 16 by being stacked in the axial direction, and the protrusions 18a are inserted between the claw portions 123a and 123b of the respective circlips 121 accommodated. The rotation is restricted and held in the same phase. The lower end 16 a of the magazine 16 is formed flush with the lower surface 14 a of the upper plate 14 that forms the upper surface of the circlip supply path 15. The peripheral wall 17 is formed with a slit 17a that is continuous from the top end to the vicinity of the lower end.

  Further, a circlip presence / absence detecting means 19 for detecting the presence / absence of the circlip 121 accommodated in the magazine 16 is provided in the vicinity of the lower end 16 a of the magazine 16. As shown in FIG. 7, the circlip presence / absence detecting means 19 includes a protruding portion 18 a of the positioning guide 18 and a through hole 18 b that passes coaxially in the vicinity of both ends of the peripheral wall 17 that faces the protruding portion 18 a. The light-emitting element 19a is provided in one through-hole 17b formed in the peripheral wall 17 and the light-receiving element 19b is provided in the other through-hole 17c. The circlip presence / absence detecting means 19 is turned on when the light receiving element 19b receives the light emitted from the light emitting element 19a and operates a display device (not shown) to confirm that the circlip 121 in the magazine 16 is empty. To inform.

  The circlip 121 supplied from the magazine 16 to the upstream portion 15A of the circlip supply path 15 formed by the lower plate 13 and the upper plate 14 one by one along the circlip supply path 15 one by one. A circlip cutout portion 21 to be supplied to 41 is provided.

  The circlip cutout portion 21 is disposed from the upstream portion 15A to the downstream end of the circlip supply passage 15 and regulates the rotation of the circlip 121 supplied from the magazine 16 to the upstream portion 15A of the circlip supply passage 15. The circlip phase restricting unit 22 that maintains the same phase and the circlip pushing unit 27 that cuts out and supplies the circlip 121 one by one from the upstream portion 15A of the circlip supply path 15 to the circlip assembling unit 41 on the downstream side. ing.

  In the lower plate 13 on which the circlip phase restricting portion 22 is disposed, the guide groove 13a is formed from the phase restricting member accommodating portion 13c and the phase restricting member accommodating portion 13c that are recessed on the lower surface of the lower plate 13 so as to face the guide groove 13a. An opening 13d that opens in the form of a slit in communication with the upper end of the circlip supply path 15 is formed continuously from the upstream portion 15A to the downstream end, and on the lower surface of the upper plate 14, facing the opening 13d, the phase regulating member accommodating portion 14d. Is recessed.

  The circlip phase restricting portion 22 penetrates the base portion 23 disposed on the table 10 and the phase restricting portion main body 24a and the opening portion 13d that can be fitted into the position restricting member accommodating portion 13c formed on the lower plate 13 from below. And a phase regulating member 24 having a convex shape in section and integrally projecting phase regulating portions 24b, and biasing means disposed on the upstream end side and the downstream end side of the base portion 23 and the phase regulating member 24, respectively. Spring plates 25a and 25b are provided, and the phase restricting member 24 is always urged in the direction in which the position restricting portion 24b protrudes from the opening 13d by the urging force of the spring plates 25a and 25b.

  The phase restricting portion 24b has a width that can be fitted between the claw portions 123a and 123b of the circlip 121, and the top portion of the upstream end portion of the phase restricting portion 24b is gently increased so as to rise toward the downstream side. It inclines, and the top part of the downstream end part inclines gently so that it may descend | fall as it moves downstream. Further, a notch that is fitted to the tip of the protrusion 53 of the circlip assembling portion 41 to be described later is recessed at the downstream end of the phase restricting portion 24b. A guide pin 26 is erected on the base 23 so that an upper end 26 a is slidably fitted into a guide hole formed in the phase regulating member 24 and guides the vertical movement of the phase regulating member 24.

  The circlip extruding part 27 has a cutting air cylinder 28 as driving means provided on the table 10 and a cutting plate 29 whose base end is connected to the cylinder rod 28a of the cutting air cylinder 28. As shown in FIG. 4, the leading end portion 29 is branched by a groove 29 a that allows the position restricting portion 24 b to be inserted, and each leading end 29 b is inserted into the circlip supply path 15. As the cutting air cylinder 28 contracts, the cutting plate 29 moves back to the retracted position where the tip 29b is retracted from the upstream portion 15A of the circlip supply passage 15, and by the extension of the cutting air cylinder 28, the cutting plate 29 is The tip 29b protrudes from the downstream end of the circlip supply path 15 and moves forward to a forward position where it protrudes into the taper guide hole 55 of the circlip assembly 41.

  On the other hand, the circlip supply rod 31 for supplying the circlip 121 into the magazine 16 is provided with a circlip retaining means serving as a circlip retaining means on the outer periphery in the vicinity of the tip 32a of the cylindrical rod body 32 as shown in FIG. A bolt 33 protrudes in the circumferential direction and is screwed, and a grip portion 34 is provided at the proximal end.

  Further, as shown in FIG. 2, a plurality of circlips 121 supplied in the magazine 16 are held in a stable state, and a detection dog 35 that indicates the amount of the circlip 121 stored in the magazine 16 is provided. The detection dog 35 is provided with a concave portion that engages with the convex portion 18 a of the positioning guide 18, and has a substantially cylindrical dog body 36 that can be fitted into the magazine 16. The dog body 36 formed by the rod 37 provided with the portion 38 and inserted into the magazine 16 is in contact with the bottom surface of the upstream portion 15A of the circlip supply path 15, that is, the guide groove 13a. The upper end is positioned below a through hole 18b formed in the convex portion 18a of the positioning guide 18, and light from the light emitting element 19a is detected by the light receiving element 19b through the through hole 18b.

  As shown in FIG. 8, a large number of circlips 121 are fitted along the axial direction on the rod body 32 of the circlip supply rod 31 screwed with a circlip retaining bolt 33 in the vicinity of the tip 32a. The circlip supply rod 31 to which the many circlips 121 are locked is prepared in an upright posture with its tip 32a positioned downward. With the cylinder 28 contracted and the cutting plate 29 held in the retracted position as indicated by phantom lines in FIG. 4, the head of the circlip retaining bolt 33 protrudes from the slit 17a to the magazine 16, and The clip 121 is inserted from the side of the tip 32a while maintaining the state in which the ridge portion 18a is fitted between the claw portions 123a and 123b.

  In the state where the tip 32a of the circlip supply rod 31 is in contact with the bottom of the circlip supply path 15, the circlip retaining bolt 33 whose head protrudes from the slit 17a is loosened and removed, thereby removing the circlip retaining bolt 33. The circlip 121 is released, and the rotation of each circlip 121 is restricted by the convex portion 18a of the positioning guide 18 so that the phase thereof is maintained and the lower circlip 121 abuts against the bottom surface of the circlip supply passage 15. Drop in the magazine 16.

  The lowermost circlip 121 that abuts the bottom of the circlip supply path 15 has claw portions 123a and 123b at the upstream end of the position restricting portion 24b that faces the lower end of the convex portion 18a formed in the positioning guide 18. And the rotation of the circlip 121 is restricted, and the same phase is maintained.

  In this state, the circlip supply rod 31 is pulled out from the magazine 16. Then, the dog body 36 of the detection dog 35 is inserted from the upper end of the magazine 16 and set on the circlip 121. The weight of the detection dog 35 set on the circlip 121 acts on the circlip 121 stored in a stacked state in the magazine 16 from above, and a gap generated between the circlips 121 is prevented. The clip 121 is maintained in a well-aligned state.

  When the circlip 121 is placed on the upstream portion 15A of the circlip supply path 15 while the phase is maintained by the phase restricting portion 24b and the contracted cut-out air cylinder 28 is extended, the lowermost circlip The annular portion 122 is pushed by the pair of leading ends 29b of the cut-out plate 29, and the rotation is restricted by the position restricting portion 24b fitted between the claw portions 123a and 123b, and moves to the downstream side while maintaining the same phase. Here, the movement of the other circlip 121 is restricted by the magazine 16 and the movement of only the lowermost circlip 121 is permitted and cut out without fail.

  The circlip 121 pushed out by the tip 29b of the cut-out plate 29 is advanced in the circlip supply path 15 while maintaining the same phase with the rotation regulated by the position regulating part 24b fitted between the claw parts 123a and 123b. .

  More specifically, the circlip 121 pushed out by the cutout plate 29 in a state in which the position restricting portion 24b is fitted between the claw portions 123a and 123b is upstream of the annular portion 122 inclined by the position restricting portion 24b. The ring-shaped portion 122 of the circlip 121 that abuts on the top of the end and moves forward slides sequentially from the top of the upstream end of the movement restricting portion 24b toward the downstream end, while moving the movement restricting portion 24b to the spring plate 25a and Push down against the urging force of 25b. When the movement restricting portion 24b is pushed down by the circlip 121, first, the upstream end side where the annular portion 122 of the circlip 121 is pressed is pushed down by the annular portion 122, and the upstream side of the movement restricting portion 24b is lower than the downstream side. After that, the downstream side is also pushed down with the movement of the pressure applying position by the annular portion 122, and the movement restricting portion 24b is pushed down to a substantially horizontal state, and then the annular portion 122 moves. When the sliding movement to the top of the downstream end portion of the restricting portion 24b is performed, the upstream side where the pressure is released is inclined so that the upstream side becomes upward with respect to the downstream side. That is, the state in which the movement restricting portion 24b is continuously inserted between the claw portions 123a and 123b of the circlip 121 moved by the movement restricting portion 24b swinging with the movement of the annular portion 122 of the circlip 121 is continuously provided. The circlip 121 that is maintained and moves in the circlip supply path 15 from the upstream portion 15A to the downstream end does not rotate, and the circlip 121 is maintained in the same phase from the downstream end of the circlip supply path 15. It is supplied to the clip assembling unit 41.

  On the other hand, as the cutting air cylinder 28 contracts, the cutting plate 29 moves backward from the forward position shown by the solid line in FIG. 4 to the backward position shown by the phantom line. When the cutout plate 29 moves backward to the retreat position, the cutout plate 29 is retracted from below the magazine 16 in the circlip supply path 15, and the lowest circlip 121 held by the cutout plate 29 moves to the circlip supply path 15. The upstream portion 15A is supplied, and the upstream end portion of the position restricting portion 24b is fitted between the claw portions 123a and 123b, and the same phase of the circlip 121 is maintained.

  Similarly, by repeating expansion and contraction of the cutting air cylinder 28, the circlips 121 accommodated in the magazine 16 are sequentially cut out and supplied one by one to the circlip assembling unit 41 through the circlip supply path 15.

  Next, the circlip assembling part 41 will be described with reference to FIGS. 3 and 9 to 12.

  9 is a view showing a state where the circlip assembling part 130 is mounted on the circlip assembling portion 41 shown in FIG. 3, FIG. 10 is a sectional view taken along line VI-VI in FIG. 9, and FIG. 11 is VII in FIG. FIG.

  The circlip assembling part 41 has a cylindrical assembling part main body 42 that is erected on the table 10 with a lower end fitted into an opening 10a formed in the table 10. Is formed with a lift plate guide hole 43 having substantially the same diameter as the outer diameter of the unloaded circlip 121.

  A cylindrical assembling jig mounting part 45 is arranged continuously on the upper part of the assembling part main body 42.

  The assembly jig mounting portion 45 is formed in a cylindrical shape that communicates in the vertical direction with a peripheral wall 47 having an arcuate cross section and a positioning guide 51 that closes an open end of the peripheral wall 47.

  The peripheral wall 47 is gradually reduced in diameter as it moves upward in an arc shape that can accommodate the annular portion 122 of the unloaded circlip 121 whose lower end 48a is expanded in diameter, and the upper end 48b is as shown in FIG. The circular circlip 121 of the reduced diameter state in which the claw portions 123a and 123b are engaged with the respective side surfaces 146f and 146g of the circlip retaining groove 146e formed in the circlip holding portion 146 of the circlip assembling jig 130. A tapered guide surface 48 formed in an arc shape having a slightly smaller diameter than the portion 122 is formed. A circlip guide surface 49 having the same diameter as that of the upper end 48b is formed continuously with the upper end 48b of the tapered guide surface 48.

  A large-diameter assembly jig insertion surface 50 is continuously formed through a step at the upper end of the circlip guide surface 49.

  A circlip supply port 60 that opens along the lower end 48 a of the tapered guide surface 48 and continues to the circlip supply path 15 of the circlip supply unit 11 opens at the lower end of the peripheral wall 47.

  The positioning guide 51 is formed so as to protrude between the claw portions 123a and 123b of the circlip 121 and is formed so as to protrude from the lower end portion of the side wall 52 and the flat side wall 52 that closes the opened end of the peripheral wall 47. A protrusion 53 that can be fitted with a positioning groove 150 formed at the tip of the piston pin insertion portion 149 of the assembly jig 130 is integrally formed.

  By connecting both end portions of the peripheral wall 47 and the side wall 52 of the positioning guide 51, a tapered guide hole in which the protruding portion 53 continuously protrudes in the vertical direction by the tapered guide surface 48 of the peripheral wall 47 and the side wall 52 of the positioning guide 51. 55 is formed, and the lower end of the taper guide hole 55 becomes the circlip setting position 55A. A clip guide hole 56 is formed by the circlip guide surface 49 and the side wall 52 continuously to the taper guide hole 55, and an assembly jig insertion hole 57 is formed by the assembly jig insertion surface 50 and the side wall 52. The lower end of the tool insertion hole 57 is a circlip mounting position 57A.

  Here, the circlip 121 supplied to the circlip setting position 55A through the circlip supply port 60 to the tip 29b of the cutout plate 29 by extending the cutting air cylinder 28 of the circlip supplying unit 11 is connected to the claw 123a. The protruding portion 53 is fitted between 123b and the phase is regulated, and the vicinity of the end of the circlip supply port 60 is blocked by the tip 29b of the cutout plate 29 held at the advanced position to be in a stable state. Retained.

  Further, the assembling jig mounting portion 45 is provided with an assembling jig mounting detecting means 58 for detecting the set of the circlip assembling jig 130. The assembling jig mounting detecting means 58 has a seating switch air hole 59 having a tip 59a opened at the upper part of the protruding portion 53 of the positioning guide 51, and is fed from the air supply source to the seating switch air hole 59. A seating switch (not shown) that turns ON when the air pressure is higher than a preset value is provided, and the circlip assembling jig 130 is fitted in the protrusion 53 with the positioning groove 150 formed in the piston pin insertion portion 149. When the seating switch air hole 59 is set, the tip 59a of the seating switch air hole 59 is sealed by the piston pin insertion portion 149, and the air pressure in the seating switch air hole 59 becomes equal to or higher than a predetermined value. A set of assembly jigs 130 is detected.

  Further, the circlip 121 supplied to the circlip setting position 55A at the lower end of the tapered guide hole 55 is pushed up along the tapered guide hole 55 and pushed toward the circlip mounting position 57A, thereby reducing the diameter of the circlip 121. A circlip pushing portion 61 is provided.

  The circlip push imparting portion 61 is swingable via a joint 63 to an assembly air cylinder 62 serving as a lift plate driving portion disposed on the table 10 and a cylinder rod 62a of the assembly air cylinder 62. A cylindrical lift plate 65 that is supported and moves up and down in the lift plate guide hole 43 of the assembly portion main body 42 by expansion and contraction of the assembly air cylinder 62 is provided.

  FIG. 12A shows a side view, FIG. 12B shows a view taken along the arrow B in FIG. 12B, and FIG. 12C shows a sectional view taken along line VIII-VIII in FIG. As described above, except for the portion corresponding to the side wall 52 from the outer periphery of the substantially disc-shaped base 66 that is screwed into the joint 62, it extends in a substantially cylindrical shape, extends in the axial direction, and is divided into a plurality by slits. A plurality of movable pieces 67 made of a spring member formed in a strip shape are formed, and the distal end portion 67a of each movable piece 67 is formed thick.

  In the retracted position where the assembling air cylinder 62 is contracted, the lift plate 65 is positioned in the lift plate guide hole 43 of the assembly portion main body 42 as shown in FIGS. Located below the circlip supply port 60.

  The cylinder rod 62a of the assembling air cylinder 62 is extended based on the ON of the seating switch when the tip 59a of the seating switch air hole 59 is closed by the attachment of the circlip assembling jig 130, and the lift plate 65 The taper guide hole is formed by each tip 67a that moves up from the retracted position in the lift plate guide hole 43 and the tip 67a of each movable piece 67 moves toward the circlip mounting position 57A while sliding on the taper guide surface 48. The circlip 121 supplied to the circlip set position 55A formed at the lower end of 55 is pushed up to the circlip mounting position 57A side along the tapered guide surface 48 that is gradually reduced in a taper shape, and a reduced diameter is given. The front of the clip guide hole 56 corresponding to the circlip mounting position 57A through the upper end of the circlip mounting position side end Raising up to the end position. On the other hand, when the assembly air cylinder 62 contracts, the lift plate 65 descends in the lift plate guide hole 43 and stops at the retracted position.

  As shown in the plan view of FIG. 13 and the cross-sectional view taken along the line IX-IX of FIG. 13, the assembly jig positioning unit 71 is provided at both ends of the guide rail 72 extending horizontally on the table 10. A pair of positioning air cylinders 73 and 74, which are driving means arranged opposite to each other, and sliders 75 and 76 that move in the contact and separation directions along the guide rails 72 in the contact and separation directions by the positioning air cylinders 73 and 74, respectively. I have. The sliders 75 and 76 are provided with stoppers 75a and 76a projecting opposite to each other, and assembly jig guide members 77 and 78 formed with semicircular guide portions 77a and 78a facing each other. It is extended.

  When the sliders 75 and 76 move close to each other and the stoppers 75a and 76a contact the contact portion 79, the guide portions 77a and 78a of the assembly jig guide members 77 and 78 cause the circlip assembly jig 130 to move. The jig main body 141 is moved to a guide position where a guide hole 80 for guiding the assembly main body 141 and the assembly jig mounting portion 45 coaxially is formed, and the sliders 75 and 76 are separated from each other, whereby the guide portion 77a, 78a moves to an open position separated from each other. Further, the guide is brought into contact with the circlip contact surface 146b of the jig body 141 of the circlip assembly jig 130 inserted into the guide hole 80 formed by the guide portions 77a and 77b of the assembly guide members 77 and 78. A restricting portion 81 for restricting the position of the jig main body 141 inserted into the hole 80 is projected from one guide portion, for example, the guide portion 78a.

  Further, the proximity switch 82 serves as an assembling jig detecting means for detecting the presence or absence of the circlip assembling jig 130 inserted into the guide hole 80 formed by the guide portions 77a and 78a of the assembling jig guide members 77 and 78. Is provided. When the circlip assembling jig 130 is extracted from the guide hole 80 and removed, it is detected by the proximity switch 80, and the positioning air cylinders 73 and 74 of the assembling jig positioning portion 71 contract by the detection signal. Thus, the guide portions 77a and 78a of the assembly jig guide members 77 and 78 are closed, and the guide hole 80 is closed.

  Next, mounting of the circlip 121 to the circlip assembling jig 130 by the circlip mounting apparatus 1 configured as described above will be described with reference to a flowchart shown in FIG.

  As shown in FIG. 8, a number of circlips 121 are prepared by fitting and locking a plurality of circlips 121 to the bar main body 32 to which the circlip retaining bolts 33 of the circlip supply bar 31 are attached.

  On the other hand, the cutting air cylinder 28 of the circlip extruding unit 27 disposed in the circlip supplying unit 11 contracts, and the cutting plate 29 is held in the retracted position as indicated by the phantom line in FIG. 41, the assembling air cylinder 62 contracts to maintain the lift plate 65 in the retracted position below the circlip supply port 60, and the positioning air cylinders 73, 74 of the assembling jig positioning portion 71 are extended to assemble. The guide holes 80 are prepared by the guide portions 77a and 78a of the jig guide members 77 and 78.

  Then, the circlip supply rod 31 prepared by engaging a number of circlips 121 in advance is erected such that the tip 32a is downward, and the head of the circlip retaining bolt 33 is attached to the magazine 16. The protrusion 32a of the positioning guide 18 is fitted between the claw portions 123a and 123b of each circlip 121 that protrudes from the slit 17a of the circlip and is locked to the circlip supply rod 31. It is inserted into the magazine 16 from the side, and the tip 32a of the circlip supply rod 31 comes into contact with the bottom of the circlip supply path 15 and stops.

  Thereafter, with the tip 32a of the circlip supply rod 31 in contact with the bottom of the circlip supply path 15, the circlip retaining bolt 33 protruding from the slit 17a opening in the magazine 16 is loosened and removed. . Each circlip 121 whose circlip retaining bolt 33 has been removed and whose retaining has been released maintains its phase by the engagement of the convex portion 18a of the positioning guide 18, while the lowermost circlip 121 is circlip. The inside of the magazine 16 is dropped until it comes into contact with the bottom surface of the supply path 15, and is supplied to the upstream portion 15 </ b> A of the circlip supply path 15. The lowermost circlip 121 that abuts the bottom of the circlip supply path 15 has an upstream end portion of the position restricting portion 24b of the phase restricting member 24 facing the lower end of the convex portion 18a formed in the positioning guide 18. The same phase is maintained by fitting between the claw portions 123a and 123b.

  In this state, the circlip supply rod 31 is pulled upward, and the dog body 36 of the detection dog 35 is inserted from the upper end of the magazine 16 and set on the circlip 121 as shown in FIG. In this way, the circlip 121 is loaded into the magazine 16 to complete the preparation for work.

  After that, the cutting air cylinder 28 of the circlip cutting unit 21 provided in the circlip supplying unit 11 is extended, and the cutting plate 29 moves forward from the retracted position shown by the phantom line to the advanced position shown by the solid line in FIG. The annular portion 122 of the lowermost circlip 121 is pushed by the pair of leading ends 29b of the cutting plate 29 that moves forward to move forward from the upstream portion 15A of the circlip supply path 15 toward the circlip assembling portion 41 side. (Step S1).

  The circlip 121 pushed out by the tip 29b of the cut-out plate 29 is advanced in the circlip supply path 15 while the rotation is restricted by the position restricting part 24b inserted between the claw parts 123a and 123b and the same phase is maintained. To do.

  The annular portion 122 of the lowermost circlip 121 is pushed by the pair of leading ends 29b of the cutting plate 29 that moves forward, and the circlip assembly portion 41 of the circlip assembling portion 41 passes from the downstream end of the circlip supply path 15 through the circlip supply port 60. The circlip 121 is supplied and set at the circlip setting position 55A at the lower end of the taper guide hole 55 (step S2).

  The phase is regulated by the protrusion 53 into which the claw portions 123a and 123b of the circlip 121 supplied to the circlip set position 55A are inserted. Further, the vicinity of the end of the circlip supply port 60 is blocked by the tip 29b of the cutout plate 29, and the circlip 121 is maintained in a stable state at the circlip setting position 55A.

  Thereafter, the operator can remove the jig main body 141 of the circlip assembling jig 130 from the guide hole 80 formed by the guide parts 77a and 78a of the assembling jig guide members 77 and 78 of the assembling jig positioning part 71. The circlip mounting portion 145 formed at the tip is inserted, and further, as shown in FIGS. 9 and 10, the circlip mounting portion 145 is assembled while being guided and guided along the side wall 52 of the positioning guide 51 forming the circlip assembling portion 41. The circlip assembly jig 130 is set by inserting into the tapered guide hole 55 from the jig insertion hole 57 and fitting the positioning groove 150 formed at the tip of the piston pin insertion part 149 from above the protrusion 53. (Step S3).

  By setting the circlip assembling jig 130, the circlip assembling jig 130 inserted into the guide hole 80 formed by the guide portions 77 a and 78 a of the assembling jig guide members 77 and 78 is moved by the proximity switch 82. The leading end 59a of the seating switch air hole 59 is blocked by the positioning groove 150 of the piston insertion portion 149, and the circlip assembling jig 130 is appropriately set in the circlip assembling portion 41 when the seating switch is turned on. Is detected. (Step S4).

  When the seating switch is turned on, the assembling air cylinder 62 extends, the lift plate 65 moves up from the retracted position in the lift plate guide hole 43, and the distal end portion 67 a of each movable piece 67 of the lift plate 65 forms the taper guide surface 48. The circlip 121 that is raised while sliding and supplied to the lower end portion of the taper guide hole 55 by each tip portion 67a is tapered in a state in which the phase is regulated by the claw portions 123a and 123b fitted to the protruding portion 53. The inside of the tapered guide hole 55 is pushed up along the guide surface 48 to give a reduced diameter, and it is raised to the forward end position through the clip guide hole 56 (step S5).

  The circlip 121 is gradually reduced in diameter by the taper guide surface 48 while being pushed up in the taper guide hole 55, and the circlip engaging portion formed in the circlip holding part 146 of the circlip assembling jig 130. The claw portions 123a and 123b are engaged with the respective side surfaces 146f and 146g of the groove 146e, and the reduced diameter state is maintained while the clip guide hole 56 is raised, and the annular portion 122 of the circlip 121 is It moves along the outer peripheral surface 146a of the circlip holding portion 146 from the tip of the piston pin insertion portion 149 through the outer peripheral surface 147a of the circlip opening portion 147, and the claw portions 123a and 123b are on the opening groove 147e side of the circlip opening portion 147. To the circlip locking groove 146e.

  When the circlip 121 is pushed up to the circlip mounting position 57 </ b> A formed at the lower end of the assembly jig insertion hole 57 formed in a large diameter from the clip guide hole 56, the circlip 121 is contracted by the clip guide hole 56. As shown in FIG. 21, the claw portions 123a and 123b are locked to the side surfaces 146f and 146g of the circlip locking groove 146e by releasing the diameter and expanding the annular portion 122 by the elastic restoring force. It is attached to the holding part 146 (step S6).

  Subsequently, the assembly air cylinder 62 contracts, and the lift plate 65 is positioned in the lift plate guide hole 43 of the assembly portion main body 42 as shown in FIGS. 67a descends to the retracted position below the circlip supply port 60 and stops (step S7).

  When the lift plate 65 is retracted, the positioning air cylinders 73 and 74 of the assembly jig positioning unit 71 are contracted to move the sliders 75 and 76 away from each other along the guide rail 72, so that the guide units 77a and 78a are moved. The guide holes 80 are opened by moving to open positions separated from each other (step S8).

  After the guide hole 80 is opened, the operator can insert the tip of the jig main body 141 of the circlip assembling jig 130 from the guide hole 80 opened by separating the guide parts 77a and 78a of the assembling jig positioning part 71. The circlip assembling jig 130 with the circlip 121 attached to the circlip attaching part 145 formed in the above is pulled upward and removed from the assembling jig insertion hole 57 of the circlip assembling part 41 (step S9).

  When the circlip assembling jig 130 is pulled out, the guide parts 77a and 78a of the assembling jig positioning part 71 are maintained apart from each other and the guide hole 80 is opened. 130 and the assembly jig guide members 77 and 78 forming the guide hole 80 of the assembly jig positioning portion 71 are prevented from being contacted and attached to the circlip mounting portion 145 of the circlip assembly jig 130. It is possible to effectively prevent the circlip 121 from falling off.

  The set circlip assembling jig 130 is pulled upward, and the circlip assembling jig 130 is extracted from the guide hole 80 opened by separating the guide parts 77a and 78a of the circlip assembling part 41. When it is removed, it is detected by the proximity switch 82, and on the basis of the detection, the positioning air cylinders 73, 74 of the assembling jig positioning portion 71 extend, and the sliders 75, 76 move closer along the guide rail 72. Then, the guide portions 77a and 78a of the assembly jig guide members 77 and 78 are closed to form a guide hole 80, which is prepared for the next insertion of the circlip assembly jig 130 (step S10).

  Subsequently, the cutting air cylinder 28 of the circlip supply unit 11 contracts, and the cutting plate 29 moves backward from the forward position indicated by the solid line in FIG. 4 to the backward position indicated by the phantom line (step S11).

  When the cutout plate 29 moves backward, the cutout plate 29 is retracted from the upstream portion 15A of the circlip supply path 15, and each circlip 121 in the magazine 16 released from dropping by the cutout plate 29 is moved to the convex strip of the magazine 16. The inside of the magazine 16 is dropped until the lowermost circlip 121 contacts the bottom of the circlip supply path 15 while maintaining the phase by the engagement of the portion 18a. The lowermost circlip 121 supplied to the circlip supply path 15 has a claw at the upstream end of the position restricting portion 24b of the phase restricting member 24 facing the lower end of the protruding portion 18a formed on the positioning guide 18. The same phase is maintained by fitting between the parts 123a and 123b, and the circlip 121 to be mounted on the next circlip assembling jig 130 is prepared (step S12).

  Thereafter, the cutout plate 29 of the circlip supply section 11 is moved forward from the retracted position to the advanced position, and the circlip 121 of the upstream portion 15A of the circlip supply path 15 is pushed forward to move forward. The circlip 121 is sequentially mounted on each circlip assembling jig 130 by repeating step 12 in which the circlip 29 is moved back to the retreated position and the circlip 121 is supplied to the upstream portion 15A of the circlip supply path 15.

  Further, when the circlip 121 loaded in the magazine 16 becomes empty by repeating steps S1 to S12, the light emission from the light emitting element 19a shielded by the circlip 121 and the dog body 36 of the detection dog 35 is received. The element 19b receives the light, the circlip presence / absence detecting means 19 is turned on, the display device is activated by the detection signal to notify the operator that the circlip 121 in the magazine 16 is empty, and the circlip mounting device 1 Each operation of is stopped.

  Therefore, according to the circlip mounting device 1 configured as described above, the circlip 121 is moved one by one by the circlip cutting unit 21 while maintaining the phase of the circlip 121 loaded in the magazine 16 of the circlip supply unit 11. The circlip is supplied to the circlip set position 55A of the circlip assembling part 41, and the circlip is formed in the assembling jig insertion hole 57 from the circlip set position 55A through the taper guide hole 55 and the clip guide hole 56. The circlip 121 can be reduced in diameter while being pushed to the position 57 </ b> A and can be mounted on the circlip mounting portion 145 of the circlip assembling jig 130 set by being inserted into the assembling jig insertion hole 57. . Accordingly, the operator can insert the circlip mounting portion 145 of the circlip assembling jig 130 into the assembling jig insertion hole 57 of the circlip assembling portion 41 of the circlip mounting device 1 and remove the circlip with a simple operation. The circlip 121 can be easily and efficiently mounted on the circlip mounting portion 145 of the clip assembling jig 130.

  In addition, this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the meaning of invention. For example, in the embodiment, the operator inserts the circlip assembling jig 130 into the assembling jig insertion hole 57 of the circlip assembling part 41 and positions it at the circlip mounting position 57A, and the circlip 121 is mounted. Although the circlip assembling jig 130 is configured to be pulled out from the assembling jig insertion hole 57, it can also be performed by an industrial robot or the like.

It is the whole circlip mounting device explanatory view showing the outline of the embodiment of the present invention. It is the II sectional view taken on the line of FIG. 1 which shows the outline | summary of a circlip supply part. It is the A section enlarged view of FIG. It is the II-II sectional view taken on the line of FIG. It is the III-III sectional view taken on the line of FIG. It is the IV-IV sectional view taken on the line of FIG. It is the VV sectional view taken on the line of FIG. It is explanatory drawing of a circlip supply rod. It is a figure which shows the state which mounted | wore the circlip assembling part with the circlip assembling part. It is the VI-VI sectional view taken on the line of FIG. It is the VII-VII sectional view taken on the line of FIG. It is explanatory drawing of a lift board, (a) is a side view of a lift board, (b) is a B arrow directional view of (a), (c) is a VIII-VIII sectional view taken on the line of (a). It is a top view of an assembly jig positioning part. It is the IX-IX sectional view taken on the line of FIG. It is a flowchart which shows an action | operation. It is principal part sectional drawing which shows the assembly | attachment state of a circlip. It is a general view which shows the outline | summary of a circlip assembling jig. It is the XX sectional view taken on the line of FIG. It is the D section enlarged view of FIG. 17 which shows the front-end | tip part of a circlip assembling jig. It is the E section enlarged view of Drawing 18 showing the tip part of a circlip assembly jig. It is the XI-XI sectional view taken on the line of FIG. It is the XII-XII sectional view taken on the line of FIG. It is a use explanatory view of a circlip assembling jig. It is a use explanatory view of a circlip assembling jig. It is a use explanatory view of a circlip assembling jig.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Circlip mounting apparatus 11 Circlip supply part 13 Lower board 14 Upper board 15 Circlip supply path 15A Upstream part 16 Magazine 18a Convex part 19 Circlip presence detection means 21 Circlip cutout part 22 Circlip phase restriction part 24 Phase restriction Member 27 Circlip Extruding Section 28 Cutting Air Cylinder (Drive Unit)
29 Cutout plate 41 Circlip assembly portion 42 Assembly portion main body 45 Assembly jig attachment portion 48 Tapered guide surface 53 Projection portion 55 Tapered guide hole 56 Clip guide hole 57 Assembly jig insertion hole 58 Assembly jig attachment Detection means 60 Circlip supply port 61 Circlip push imparting portion 62 Assembly air cylinder (lift plate drive portion)
65 Lift plate 67a Tip 71 Assembly jig positioning part 73, 74 Positioning air cylinder (driving means)
77, 78 Assembly jig guide members 77a, 78a Guide part 80 Guide hole 106 Piston pin holes 107a, 107b Clip groove 121 Circlip 122 Annular parts 123a, 123b Claw part 130 Circlip assembly jig 131 Outer cylinder 132 Tip 141 Jig body 145 Circlip mounting part 146 Circlip holding part 146e Circlip locking groove 147 Circlip opening part 149 Piston pin insertion part 150 Positioning groove

Claims (8)

An outer cylinder that can be inserted into a piston pin hole in which a clip groove for assembling a circlip in which a claw portion is bent is formed at both ends of an annular portion formed in a C-shape, and moves into the outer cylinder A circlip holding portion having a circlip engaging groove which is held in a reduced diameter by holding the claw portion at the tip of a jig main body to be inserted and holding the circlip in a reduced diameter state, and is continuous in the axial direction; The tip of the outer cylinder that moves in the axial direction is inserted into the piston pin hole with a circlip holding part on which a circlip that is held in a reduced-diameter state by locking the both claws in the locking groove is inserted. In the circlip mounting device that attaches the circlip to the circlip assembling jig that pushes the circlip and pulls out the claw part from the circlip locking groove and attaches the circlip to be elastically restored to the clip groove,
A circlip having a taper guide hole and an assembling jig insertion hole in which a circlip mounting position is continuously formed in the taper guide hole is supplied to the circlip set position one by one from the circlip supply section. While the circlip is applied to the circlip mounting position side by the circlip pressing application portion along the tapered guide hole to reduce the diameter, the circlip with the reduced diameter moves to the circlip mounting position. The both claws are inserted into the circlip engaging groove of the circlip assembling jig set in advance in the assembling jig insertion hole and released from the reduced diameter application at the circlip mounting position. The claw portions of the circlip to be elastically restored engage with the circlip retaining groove of the circlip holding portion, and the circlip is attached to the circlip holding portion of the circlip assembling jig. Circlip mounting apparatus characterized by comprising a clip assembly unit. The tapered guide hole is
The diameter of the circlip is reduced as it moves from the circlip setting position where the unloaded circlip supplied from the circlip supply unit can be accommodated to the circlip mounting position, and the end of the circlip mounting position is at the circlip engaging position. A tapered guide surface having a smaller diameter than the annular portion of the circlip in the mounted state in which the both claws are locked in the stop groove is formed,
The assembly jig insertion hole is continuous with the circlip mounting position side end of the tapered guide hole and has the circlip mounting position having a larger diameter than the circlip mounting position side end of the tapered guide hole,
The circlip push imparting section is
Tapered guide that is reciprocally movable between a retracted position in which the tip of the circlip is brought into contact with the annular portion of the circlip is retracted from the circlip setting position and an advanced end position corresponding to the circlip mounting position A lift plate disposed in the hole;
A lift plate drive unit that moves the lift plate from the retracted position to the forward end position and from the forward end position to the retracted position;
The circlip supplied to the circlip set position is pushed to the circlip mounting position along the taper guide hole at the tip of the lift plate that is moved from the retracted position to the forward end position by the lift plate driving unit. The circlip mounting device according to claim 1, characterized in that:   An assembly jig mounting detection means for detecting the circlip assembly jig inserted and set in the assembly jig insertion hole is provided, and the circlip assembly jig is set by the assembly jig installation detection means 3. The circlip mounting device according to claim 2, wherein the lift plate is moved from the retracted position to the forward end position by the lift plate driving unit based on the detection.   The protrusion part which can be inserted between the both claws of the circlip is formed continuously from the circlip mounting position to the circlip mounting part side in the tapered guide hole. The circlip mounting apparatus of any one of Claims. The circlip supply part is
A magazine containing a plurality of circlips;
A circlip supply path communicating from an upstream portion to which the circlip is supplied from the magazine to a circlip set position of the circlip assembling unit;
A circlip extruding unit that cuts out the circlips supplied to the upstream portion of the circlip supply path from the magazine one by one and supplies the circlip along the circlip supply path to the circlip set position;
The circlip mounting device according to any one of claims 1 to 4, further comprising: The circlip supply part is
A circlip phase restricting portion that is fitted between the claw portions of the circlip supplied from the upstream portion of the circlip supply path to the circlip set position by the circlip pushing portion and restricts the circlip rotation is provided. The circlip mounting device according to claim 5. The above magazine
A cylindrical shape in which a plurality of circlips are stacked and accommodated in the axial direction, and is provided with a ridge that fits between both claws of the accommodated circlip and restricts the rotation of the circlip. The circlip mounting device according to claim 5 or 6. A pair of assembling jig guide members having opposing guide portions that are recessed so as to come in contact with and away from each other, and the assembling jig guide members approach and are inserted into the circlip mounting position by the mutual guide portions. 2. An assembly jig positioning portion for forming a guide hole for guiding a clip assembly jig and opening the guide hole when the assembly jig guide members are separated from each other. The circlip mounting apparatus of any one of -7.

Images