JPH0761582B2 - Supply device for cylindrical parts - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a device for supplying tubular parts, and more specifically,
The present invention relates to a tubular part supply device capable of automatically supplying parts such as bearings at a desired angular position to a press-fit rod that press-fits a cylindrical part into a press-fitted member.

[Prior Art] For example, work for automatically press-fitting parts such as bearings and bushes into a press-fitted member such as a casing is generally performed. That is, the parts sequentially conveyed from the parts feeder are positioned and held at predetermined positions, the parts are sent out to the press-fitting rod, and then the press-fitting rod and the press-fitted member are displaced relatively close to each other. The press-fitting work is automatically performed.

By the way, in this type of part, for example, there is one in which an oil hole is provided corresponding to the oil hole of the press-fitted member, and in this case, the hole and the oil hole are aligned with each other. It is necessary to press fit the parts into the press-fitted member.
Therefore, various devices have been proposed in the past for automatically performing the phase alignment work of the parts with respect to the press-fitted member. For example, the technique is disclosed in Japanese Utility Model Laid-Open No. 62-98621.

[Problems to be Solved by the Invention] However, in the above-mentioned conventional technique, the parts are positioned and held in the press-fitting head under the expanding action of the spherical body engaging with the elastic body. When the parts are moved, there is a possibility that the parts rotate and the angular positions thereof change. In addition, there is a risk that the part will rotate due to a partial difference in the press-fitting resistance when the part is press-fitted into the member to be press-fitted. As a result, it has been pointed out that the parts are press-fitted into the press-fitted member in a state where the oil holes of the press-fitted member and the hole portions of the parts are not communicated with each other, and the efficiency of the parts press-fitting work cannot be achieved.

The present invention has been made to solve the above-mentioned problems, and is configured to rotate the tubular part while pressing the tubular part against the press-fit rod, thereby positioning the tubular part. The positioning projection of the press-fit rod can be automatically and surely fitted into the groove,
An object of the present invention is to provide a cylindrical parts supply device capable of performing efficient parts press-fitting work.

[Means for Solving the Problem] In order to achieve the above-mentioned object, the present invention is a device for positioning and supplying the tubular part to a press-fitting rod for press-fitting the tubular part into a press-fitted member, A holding unit that has a housing part for arranging the tubular part by orienting a positioning groove formed on one end side of the tubular part toward the press-fitting rod, and at least a holding unit that is movable back and forth in the axial direction of the press-fitting rod; A parts delivery mechanism attached to the holding unit, wherein the parts delivery mechanism includes one or more pin members that are fitted into a positioning groove formed on the other end side of the tubular part in the housing. A pressing member that is arranged so as to be able to move forward and backward through the body and is provided coaxially with the tubular part inside the accommodating portion, and a first member for pressing the tubular part toward the press-fit rod side through the pressing member. By rotating the moving means and the pressing member, the cylindrical part is rotated through the one or more pin members, and the press-fitting rod is positioned in the positioning groove formed on one end side of the cylindrical part. A second drive unit for fitting the protrusion, and the second drive unit.

[Operation] In the tubular part supply device according to the present invention configured as described above, after the tubular part is arranged in the housing portion and the holding unit is moved to the press-fitting rod side, the first and second drive are performed. Under the action of the means, the tubular part is rotated while being pressed by the press-fitting rod. Then, when the positioning groove of the tubular part and the positioning projection of the press-fitting rod match, the tubular part moves to the press-fitting rod side and the projection fits in the groove, and the tubular part is The press-fitting rod is positioned and held at a predetermined angle.

[Embodiment] Next, a tubular part supply device according to the present invention will be described in detail below with reference to the accompanying drawings.

2 and 3, reference numeral 10 indicates a parts supply device according to this embodiment. The parts supply device 10 has a frame 12, and the frame 12 has respective columns 13a and 13b.
Bolted on. A pair of guide rails 14a and 14b are arranged on the frame 12 in the direction of arrow A, and one end of a stay 16 is fixed to the upper portion of the frame 12,
At the other end of the stay 16 extending in the direction of arrow A, a transport mechanism 18 is provided.
Is provided.

The holder 20 constituting the transport mechanism 18 has an intermediate portion fixed to the stay 16 and extends in the direction of the arrow B, and a hole 22 is formed through the holder 20 in the longitudinal direction. The holder 20 has a chute 24 from a parts feeder (not shown).
The part introduction port 26 which has a rectangular cross section and is inclined with respect to the vertically upward direction so that the part P conveyed through
The holes 22 are provided with a and 26b and part outlets 28a and 28b for dropping and supplying the parts P to a parts holding unit described later.
To communicate with.

A rotating body 30 is fitted in the hole portion 22, and parts introducing ports 26a, 26b and a parts outlet port 28 are provided at both end edges of the rotating body 30, respectively.
Apertures 32a, 32b, which can communicate with a, 28b, are formed in the diametrical direction. In this case, the openings 32a and 32b are selected to have a size capable of accommodating the single part P, and the cylinder 36 engages with one end of the rotary body 30 exposed to the outside through the arm 34. The cylinder 36 is swingably supported on the upper portion of the frame 12, and a piston rod 38 extending from the cylinder 36 engages with the arm 34.

Further, a cam plate 42 constituting a drive mechanism 40 for opening and closing a support arm described later is attached to the lower side of the stay 16.

Then, the holding unit 44 is attached to the frame 12 by the arrows A and B.
It is arranged so that it can move back and forth in any direction. That is, the frame
The shift cylinder 46 is attached to the shift cylinder 12, the movable base 50 is fixed to the piston rod 48 extending from the shift cylinder 46, and the movable base 50 is placed on the guide rails 14a and 14b. The movable table 50 is provided with a pair of parallel guide bars 52a, 52b extending in the direction of arrow B, and a cylinder 54 is engaged between them, and a piston rod 56 extending from the cylinder 54 is unitized. Fasten the body 58 (4th
See figure). The unit body 58 has cylindrical bodies 60a and 60b into which the guide bars 52a and 52b are fitted.

The unit main body 58 includes a pair of rectangular cylinders 62a and 62b, each of which has a transport mechanism 18
Is provided so as to be vertically arranged below the part outlets 28a, 28b that make up the above, and passages 64a, 64b extending in the vertically downward direction are formed in the rectangular tubular bodies 62a, 62b, respectively. , 64b
The parts accommodating parts 66a and 66b communicate with the lower part of the.

Openings 68a and 68b communicating with the parts accommodating portions 66a and 66b are formed at the lower ends of the rectangular tubular bodies 62a and 62b, and the openings 68a and 68b are formed.
The part support mechanisms 70a and 70b face one end of the. That is,
Explaining the parts support mechanism 70a, as shown in FIG. 5, the parts support mechanism 70a includes a set of support arms 72a.
a, 72a, the upper side of the support arms 72a, 72a is a pin
It is swingably supported by the rectangular tubular body 62a by 74a and 74a. Both ends of a spring member 76 are engaged with the support arms 72a, 72a below the pins 74a, 74a, and the lower ends of the support arms 72a, 72a come close to each other under the pulling action of the spring members 76a. Biased in the direction. Here, the support arms 72a, 72a
A circular opening having a diameter slightly smaller than the outer diameter of the part P is defined in the lower part of the opening P, and the opening 68a is formed.
Arc-shaped locking portions 78a, 78a that enter the are formed. on the other hand,
Locking portions 80a, 80a are provided on the upper portions of the support arms 72a, 72a so as to be spaced apart from each other at a predetermined distance and project vertically upward, and the driving mechanism 40 is engaged with the locking portions 80a, 80a.

The drive mechanism 40 has a rod 82a substantially slidably fitted in the unit main body 58, and a spring member 84a is interposed between the rod 82a and the unit main body 58 to provide the rod 82a.
Is urged vertically upward. On the upper part of the rod 82a, the rotating body 8
6a is provided, and the rotating body 86a engages with the cam plate 42 described above. The lower part of the rod 82a has an opening / closing claw 8 with a bent shape.
8a is provided, and taper surfaces 89a, 8a are provided at the ends of the opening and closing claws 88a so as to slidably contact the engaging portions 80a, 80a of the support arms 72a, 72a, respectively.
9a is formed.

The configuration of the parts support mechanism 70a has been described above.
With regard to the parts support mechanism 70b, the same components are designated by the same reference numerals, and detailed description thereof will be omitted.

A parts delivery mechanism 9 is provided on the other end side of the openings 68a of the rectangular tubular bodies 62a and 62b.
0a faces. A bracket 92a that constitutes the parts delivery mechanism 90a is fixed to the rectangular tubular body 62a.
The drive pulley 94a is fitted onto one end of a. As shown in FIGS. 1 and 6, a tooth portion 96a is provided on one side of the drive pulley 94a, and the drive pulley 94a is rotationally driven via a rotary drive means (second drive means) 97. . That is, the rotary drive means 97 includes a rotary drive source 98, a belt 102 is stretched around a pulley 100 connected to the rotary drive source 98, and one end of the belt 102 is engaged with a drive pulley 94a.

Next, the tooth portion 96a of the drive pulley 94a meshes with the tooth portion 106a of the clutch member 104a, and a spline hole 108a is formed in the center portion of the clutch member 104a. The spline hole 108a, the drive pulley 94a, and the bracket 92a The rotary cylinder 110a is disposed in the. A spline 114a is formed on one end side of the rotary cylinder 110a, and the spline 114a is fitted into the spline hole 108a of the clutch member 104a and is a locking member.
Tie on 116a. The locking member 116a and the clutch member 104a
A spring member 118a is interposed between the clutch member 10 and
4a is pressed against the drive pulley 94a side.

On the other hand, a part pressing member 120a having a substantially tubular shape is attached to the other end side of the rotating tubular body 110a. As shown in FIG. 6, the parts pressing member 120a includes a first cylindrical body 119a substantially attached to the rotary cylindrical body 110a and a bolt 12 attached to the first cylindrical body 119a.
It has the 2nd cylindrical body 123a fixed integrally via 1a. An end face for pressing a part is provided on one side of the second cylindrical body 123a.
122a is provided, and guide grooves 124a extending in the axial direction are formed at four positions on the end surface 122a at equal angular intervals. Also, four dog portions 125a are formed on the outer peripheral portion of the first cylindrical body 119a so as to project toward the rotary cylinder 110a side at equal angular intervals (actually, 90 ° intervals), and the dog portion 125a is a bracket.
The proximity switch 127a fixed vertically downward to 92a is driven (see FIG. 1). A spring member 126a is arranged between the first cylindrical body 119a and the bracket 92a.

Further, a rod 128a is arranged in the rotary cylinder 11a and the locking member 116a, and a plate 130a is attached to an end of the rod 128a which is inserted into the parts pressing member 120a to rotate with the plate 130a. Cylinder
A spring member 132a is interposed between the spring member 132a and 110a. Four holes 134a are formed in the plate 130a corresponding to the guide grooves 124a of the parts pressing member 120a, and the parts indexing pin member is formed in the holes 134a.
Fit 136a. The outer peripheral surface of the pin member 136a is cut out to form a flat plate portion 138a that substantially fits in the guide groove 124a, and the end surface of the pin member 136a and the part pressing member 120a are formed.
A spring member 139a is interposed on the inner wall surface of the.

Therefore, an advance / retreat driving means (first driving means) 140a for moving the part pressing member 120a and the pin member 136a to the part P side via the locking member 116a is provided in the unit main body 58. As shown in FIG. 3, the advancing / retreating drive means 140a.
Has an actuator, for example, a cylinder 141a, and a oscillating plate on a piston rod 142a extending from the cylinder 141a.
144a is engaged, and the swing plate 144a is attached to the rotary shaft 146a. One end of an arm member 148a is attached to the rotary shaft 146a, and the arm member extends downward from the rotary shaft 146a.
At the other end of 148a, a lever 150a having a substantially U shape and engaging with the locking member 116a is formed.

On the other hand, the parts delivery mechanism 90b faces the opening 68b of the rectangular tube body 62b. The parts feeding mechanism 90b is configured in the same manner as the parts feeding mechanism 90a described above, and the same reference numerals are attached to the same constituent elements and the detailed description thereof will be omitted. In this case, the drive pulley 94b forming the parts delivery mechanism 90b is connected to the pulley 100 connected to the rotary drive source 98.
The end portion of the belt 102 stretched over is engaged.

As shown in FIG. 3, the part P has an oil hole portion.
300 is provided, and positioning grooves 302 are formed on both side surfaces of the part P. Further, small-diameter parts 314a, 314b for fitting parts and projections 316a, 316b for fitting in the groove 302 are formed at the ends of press-fitting rods 312a, 312b for press-fitting the part P into a press-fitted member (not shown). ing.

The parts supply device according to this embodiment is basically constructed as described above, and its operation will be described below.

First, when a part P is fed from a parts feeder (not shown) to the transport mechanism 18 via the chute 24, the part P is opened through the part introduction ports 26a and 26b.
They are housed one by one in 2b. Therefore, the piston rod 38 is displaced in the direction of the arrow in FIG. 3 under the driving action of the cylinder 36, and the rotating body 30 engaged with this through the arm 34 is rotated by a predetermined angle, and the respective opening portions are opened. The parts P accommodated in 32a, 32b are dropped and supplied to the passages 64a, 64b of the rectangular tubular bodies 62a, 62b.

The parts supporting mechanism 70a and the parts feeding mechanism 90a will be described below. The parts P supplied to the passage 64a as described above are arranged in the parts accommodating portion 66a. At that time, both side portions of the part P are held by the arcuate locking portions 78a, 78a of the support arms 72a, 72a facing both ends of the opening 68a and the part pressing member 120a.

Therefore, the unit main body 58, which is engaged with the piston rod 56 that drives the cylinder 54 and extends from this, is guided by the guide bar.
Under the guiding action of 52a and 52b, the unit main body 58 is positioned by displacing it to the left in FIG. by this,
The axis of the press-fitting rod 312a and the part P arranged in the parts accommodating portion 66a are aligned.

Next, the shift cylinder 46 is driven to drive the guide rails 14a, 1a.
When the movable table 50 is moved to the press-fitting rod 312a side under the guiding action of 4b, the rotating body 86a constituting the drive mechanism 40 is moved by the cam plate 42.
The rod 82a descends against the elastic force of the spring member 84a by engaging with the thick portion side of the. Therefore, the tapered surface 89 of the opening / closing claw 88a
a and 89a engage the engaging portions 80a and 80a of the supporting arms 72a and 72a, and the supporting arms 72a and 72a swing and displace the engaging portions 78a and 78a in a direction in which they are separated from each other (in FIG. 5). , See the alternate long and two short dashes line). As a result, the small-diameter portion 314a of the press-fitting rod 312a faces the inside of the rectangular tubular body 62a from the opening 68a through the gap between the locking portions 78a, 78a, and the part P is fitted onto the press-fitting rod 312a.

Further, while the driving of the shift cylinder 46 is stopped, the cylinder 141a that constitutes the advancing / retreating drive means 140a of the parts feeding mechanism 90a is driven to displace the piston rod 142a outwardly, and the rocking plate 144a engaged with this. The rotating shaft 146a is rotated via the. An arm member 148a that engages with the rotary shaft 146a is formed with a lever 150a formed on the lower end side thereof into a press-fit rod 31.
It is displaced to the 2a side, and therefore, the locking member 116a with which the lever 150a is engaged and the rotary tubular body 110a move integrally to the press-fit rod 312a side. Therefore, the end face 122a of the part pressing member 120a fixed to the rotary cylinder 110a presses one side surface of the part P, and
The pin member 136a presses one side surface of the part P under the resilient action of the spring member 139a that engages with the inner wall surface of 120a (see FIG. 7a).

In such a state, the rotary drive source 98 constituting the rotary drive means 97 is driven to rotate the pulley 100 in a predetermined direction, and the drive pulley 94a is rotated via the belt 102 engaging with this. The rotation of the drive pulley 94a depends on the respective tooth portions 96a,
The spline 11 transmitted to the clutch member 104a via the 106a and fitted into the spline hole 108a of the clutch member 104a.
The rotary cylinder 110a rotates via the 4a. Therefore, when the part pressing member 120a and the pin member 136a rotate integrally and any one of the pin members 136a fits into the groove 302 formed on the one side surface portion side of the part P, the pin member 136a is The part P rotates under the locking action of (see FIG. 7b). Then, the part P moves to the press-fitting rod 312a side at a position where the groove 302 formed on the other side surface part side of the part P coincides with the projection 316a formed on the press-fitting rod 312a, and the projecting part 316a. Fits into the groove 302 (see FIG. 7c).

Here, since the rotation of the part P is stopped, the pin member 13
The load acts on 6a, and the parts pressing member 120a and the rotary cylinder
The clutch member 104a rotating the 110a is the spring member 118a.
It is slidably displaced to the locking member 116a against the elastic force of. As a result, from the tooth portion 96a of the drive pulley 94a to the clutch member 104a.
Since the tooth portion 106a is disengaged, the rotational force of the drive pulley 94a is not transmitted to the rotary cylinder 110a side. Therefore, as shown in FIG. 7c, one of the dog portions 125a of the first cylindrical body 119a forming the part pressing member 120a reaches the vertically upward direction, and the proximity switch 127a is driven. Then, the proximity switch 127a is continuously driven for a predetermined time, so that the parts pressing member 120a is not rotating,
That is, it is automatically and accurately detected that the part P is positioned and loaded on the press-fitting rod 312a, and the rotary drive source 98 is deenergized.

After the parts P are positioned and loaded on the press-fitting rod 312a in this manner, the cylinder 141a is driven to drive the arm member 14a.
8a is oscillated and displaced in a direction away from the press-fitting rod 312a,
The part pressing member 120a is separated from the part P.

Further, the shift cylinder 46 is driven to displace the movable table 50 in the direction of separating from the press-fitting rod 312a, and then the cylinder 54 is driven to move and position the unit main body 58 to the right side in FIG. On the other hand, the press-fitting rod 312a is displaced toward the press-fitted member (not shown) under the action of an actuator (not shown), and the part P held by the press-fitting rod 312a is press-fitted into a predetermined press-fitting portion.

In this case, according to the present embodiment, the positioning projection 316a of the press-fit rod 312a is provided in the positioning groove 302 formed in the part P corresponding to the position of the oil hole 300 provided in the part P. The part P is press-fitted by fitting the rod 31
2a is held at a predetermined angular position. Therefore, when the press-fitting rod 312a is moved to the press-fitted member (not shown) side, the part P is prevented from rotating under the locking action of the groove 302 and the protrusion 316a, and the part P is It is possible to obtain an effect that the member to be press-fitted is always pressed accurately. Moreover, even if a partial difference in the press-fitting resistance occurs when the part P is press-fitted, the part P rotates to cause the oil hole 30.
There is no fear that 0 does not communicate with the oil hole of the press-fitted member. As a result, the effect that the work of press-fitting the part P can be efficiently performed with high accuracy can be obtained.

Further, in the present embodiment, the part pressing member 120a presses the part P toward the press-fitting rod 312a side under the action of the advancing / retreating driving means 140a, and the part P is rotated via the pin member 136a under the action of the rotation driving means 97. ing. Therefore, part P
When the groove 302 and the protrusion 316a of the press-fitting rod 312a are aligned, the part P moves toward the press-fitting rod 312a and the protrusion 316a fits into the groove 302. As a result, the part P can be automatically and accurately positioned with respect to the press-fitting rod 312a, and the press-fitting operation of the part P can be smoothly performed.

[Effects of the Invention] The cylindrical parts supply device according to the present invention configured as described above has the following effects.

The positioning projection formed on the press-fitting rod is fitted into the positioning groove formed on the cylindrical part, and the tubular part is locked to the press-fitting rod at a predetermined angular position. Therefore, when the press-fitting rod is moved to the press-fitted member side, it is possible to prevent the tubular part from rotating with respect to the press-fitting rod. As a result, it is possible to maintain the tubular part at a predetermined angular position at all times and automatically and accurately press fit it into the press-fitted member.

Under the action of the first drive means and the second drive means, the tubular part can be efficiently and reliably delivered to the press-fitting rod at a predetermined angular position, and the press-fitting operation of the tubular part is performed with high accuracy. It becomes possible.

[Brief description of drawings]

FIG. 1 is an explanatory longitudinal sectional view of a main part of a parts supply device according to the present invention, FIG. 2 is a perspective view of the parts supply device, and FIG. 3 is a partial cross-sectional side view of the parts supply device. FIG. 5 is a front view of the parts supply device, FIG. 5 is an explanatory view of a parts support mechanism that constitutes the parts supply device, and FIG. 6 is an exploded perspective view of main parts of a parts delivery mechanism that constitutes the parts supply device. FIG. 7 and FIG. 7 are operation explanatory views when a part is sent to the press-fitting rod by the part supply device. 10 …… Parts supply device, 18 …… Transport mechanism 44 …… Holding unit, 58 …… Unit body 70a, 70b …… Parts supporting mechanism 90a, 90b …… Parts sending mechanism 94a, 94b …… Drive pulley 97 …… Rotating Drive means 104a, 104b ... Clutch members 110a, 110b ... Rotating cylinders 120a, 120b ... Parts pressing members 136a, 136b ... Pin members 140a, 140b ... Forward / backward drive means

Claims (4)

[Claims] 1. A device for positioning and supplying the tubular part to a press-fitting rod for press-fitting the tubular part into a press-fitted member, wherein a positioning groove formed at one end of the tubular part is press-fitted. A holding unit that has a housing portion for arranging the tubular parts oriented toward the rod side, and is capable of advancing and retracting at least in the axial direction of the press-fitting rod; and a parts feeding mechanism attached to the holding unit, The parts delivery mechanism has one or more pin members that fit into a positioning groove formed on the other end side of the tubular part in the accommodating portion and is arranged to be movable back and forth through an elastic body, and the cylinder in the accommodating portion. A pressing member provided coaxially with the cylindrical part, a first drive means for pressing the tubular part toward the press-fitting rod through the pressing member, and rotating the pressing member Second driving means for rotating the tubular part through the pin member and fitting the positioning projection of the press-fitting rod into the positioning groove formed at one end of the tubular part; An apparatus for supplying a cylindrical part, comprising: 2. The apparatus according to claim 1, wherein the second drive means includes a rotating body that is rotationally driven, a clutch member that is meshable with the rotating body, and the pressing member that is coaxially mounted on the clutch. A tubular part supply device, comprising: a rotatable shaft that rotates integrally with a member; 3. The apparatus according to claim 1, wherein the pressing member is provided with one or more dog parts, and a sensor driven by the dog part is provided, and the sensor is operated for a predetermined time via the dog part. A tubular part supply device, which is configured to be capable of detecting that the positioning projection of the press-fitting rod is fitted into the positioning groove of the tubular part by being driven continuously. 4. The apparatus for supplying a cylindrical part according to claim 1, wherein the first driving means includes an actuator for displacing a rotating shaft having a pressing member forward and backward with respect to a press-fitting rod.