JP3027972B2 - Hanger lift device for hanger conveyor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifting device for lifting a hanger at a predetermined height in a hanger conveyor for hanging and transporting articles on a hanger.

[0002]

2. Description of the Related Art Conventionally, various types of hanger conveyors for transporting articles such as sewn products through hangers in sewing factories and the like have been put to practical use. The hanger conveyor includes a rail disposed along a conveyance path, and a hanger having a rolling roller movably supported by the rail, and a configuration in which the hanger is conveyed and driven via a chain mechanism, or There is a configuration in which rails are installed at a gentle inclination and transported by their own weight such as hangers.

[0003] In particular, in a hanger conveyor configured to transport by its own weight such as a hanger, the hanger stored in the work station is transferred to the next step, or the hanger is placed in the middle of the rail to switch the transport path. In some cases, an inclined lift rail is provided to lift the hanger by a predetermined height, and a lift mechanism for lifting the hanger is provided on the lift rail. For example, in a hanger lifting device described in Japanese Utility Model Laid-Open Publication No. 61-21708, a hanger conveyor using the gentlely inclined rails is provided, and at each end position of two work stations, an inclined lift is mounted on the rails. A rail is provided, and a lift mechanism that lifts and drives the hanger via a hook that is reciprocally driven by each lift rail is provided.

Further, in the sewing hanger conveyor system described in Japanese Patent Publication No. 3-36712, a gently inclined rail is provided along a plurality of work stations.
An inclined lift rail is provided at the downstream position of each work station, and an endless chain type or cylinder type lift mechanism is provided on this lift rail, at the end of the work station on the upstream side of this lift mechanism. An auxiliary gate mechanism for stopping the hanger at the work station and a gate mechanism for storing a plurality of hangers are provided upstream of the work station.

The auxiliary gate mechanism and the gate mechanism are configured to lock a hanger with the gate plate or to kick out the hangers one by one by rotating a circular gate plate having a notch. In the gate mechanism, when one hanger is kicked out, movement of a subsequent hanger is restricted via a gate plate. It should be noted that, in addition to those described in the above publication, there are not a few lift mechanisms configured to lift a hanger along a lift rail via a swing arm driven by a cylinder or the like.

[0006]

However, the lift mechanisms described in the above publications have complicated structures and high manufacturing costs, so that the swing arm type lift mechanism is excellent in practicality. The auxiliary gate mechanism and the gate mechanism disclosed in the latter publication require a large-sized gate plate, a motor and a cylinder for driving the gate plate to rotate, and bracket members for attaching these to the rails. The cost becomes high. In addition, when the swing arm type lift mechanism is adopted, the lift start end of the lift mechanism is used to prevent the swing arm from interfering with the next hanger to be lifted when the swing arm returns. However, it is necessary to provide some kind of gate mechanism, but in the gate mechanism described in the above publication, it cannot be mounted at the lift start end of the lift mechanism in cooperation with the lift mechanism due to the characteristic of the large circular gate plate. There's a problem. The present invention has been made in order to solve the above-mentioned problems, and its object is to
An object of the present invention is to provide a hanger conveyor lift device that has a lift mechanism and a lock mechanism having a simple configuration and can smoothly transport a hanger.

[0007]

In order to achieve the above object, a hanger conveyor lifting device according to claim 1 is provided.
A rail arranged along the transport path, and a hanger having a rolling roller movably supported by the rail,
In a hanger conveyor that conveys goods via hangers, the hangers are moved up from the lower end position in the middle of the rail.
The inclined lift rail for lifting a predetermined height to the end position is provided, the engaging members projecting laterally of the rail to the hanger provided on the proximal end to the lift rail
It is pivotally supported to freely lower swing, a swing arm having an engaging engagement portions from below the engaging member to the tip portion, the swing arm, engagement thereof engaging portion of the hanger lower end position Down to the member
The lower limit of the swinging position for more engagement, and the engagement part corresponds to the upper end position
Upper for the swinging upper limit position and a drive cylinder for switching drive provided at the base end portion to the lifting rail
It has a locking part that is pivotally supported downward and locks the engaging member at the tip from the downstream side in the transport direction, and is held at the retracted position by the rocking arm when the rocking arm is at the rocking lower limit position. When the swing arm is moving upward from the swing lower limit position, a stopper arm is provided which is at a locking position for locking the engaging member of the subsequent hanger with the locking portion.

According to a second aspect of the present invention, there is provided a lift device for a hanger conveyor according to the first aspect, further comprising an elastic member for urging the stopper arm to a locking position.

[0009]

In the lift device for a hanger conveyor according to the first aspect, the hanger is moved to the lower end position of the lift rail.
When the swing arm has been moved, the engaging portion is engaged with the engaging member of the hanger from below with the swing arm lowered to the swing lower limit position.
When combined with that state, the drive switching the drive cylinder
The swing arm to the position corresponding to the upper end of the lift rail.
When the hanger is swung upward to the upper limit position , the rolling rollers of the hanger roll on the lift rail, and the hanger is lifted to the upper end position of the lift rail. When the swing arm is at the swing lower limit position, it is held at the retracted position by the stopper arm, but when the swing arm is moving upward from the swing lower limit position, the stopper arm is locked. And the engaging member of the hanger is locked.

In the lift device for a hanger conveyor according to the second aspect, the same operation as that of the first aspect is obtained, and the elastic member for urging the stopper arm to the locking position is provided. The member allows the stopper arm to be switched from the retracted position to the locked position.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. This hanger conveyor system uses a hanger 8 (see FIG. 10) as a carrier in a sewing processing factory.
(See FIG. 13 to FIG. 13) for transporting various workpieces (work cloth pieces, semi-finished products, and finished products) together with the hanger 8. As shown in FIG. 1, in the hanger conveyor system HC, a plurality of sorting devices 1 are arranged in series at predetermined intervals, and a plurality of intermediate rail units 2 are bridged between each pair of sorting devices 1. Are located in A pair of work input distribution rail units 3 are connected to the left and right sides of the sorting device 1 at the upstream end in the work transfer direction, and a pair of work take-out distribution rails are connected to the left and right sides of the sorting device 1 at the downstream end in the work transfer direction. Unit 4
Are connected. Further, a work distribution rail unit 5 extending to a work station 7 where a worker 6 is arranged is connected to both left and right sides of each sorting device 1 in the middle of the transport path. And these hanger conveyor systems HC
Are provided with a large number of hangers 8 (see FIG. 3). In the following description, upstream and downstream will be defined based on the work transfer direction.

The plurality of sorting devices 1 have the same structure, the plurality of intermediate rail units 2 have the same structure, and a pair of input distribution rail units 3 (3A, 3A).
B) has a symmetrical structure, and the pair of take-out distribution rail units 4 (4A, 4B) has a symmetrical structure.
The plurality of work distribution rail units 5 have the same structure. Therefore, the transport direction of the hanger 8 in the hanger conveyor system HC is basically a counterclockwise direction in plan view as shown by a plurality of arrows, but as shown in FIG. The transport direction of the hanger 8 in the distribution rail unit 3A and the left distribution rail unit 4B on the left side is clockwise.

Next, a specific configuration of the sorting device 1 will be described with reference to FIGS. Each sorting device 1
As shown in FIG. 3 and FIG. 6, the device has a completely unitized structure so as to be a single independent device, and is provided with a column 10 standing on the floor. As shown in FIG. 6, a mounting shaft member 11 is fixed to an upper end of the column 10, and a support plate 12 is fixed to an upper end of the mounting shaft member 11. A distributing mechanism 13 is rotatably mounted on the mounting shaft member 11.
The third body member 14 is driven to rotate by a servomotor 17 via a timing belt 15 and a timing pulley 16. The servo motor 17 is mounted on the support plate 12 and has a drive pulley 17a fixed to a motor shaft.
Between the belt and the timing pulley 16
Is stretched.

As shown in FIG. 5, the distributing mechanism 13 includes eight distributing arms 1 which are horizontally arranged in the radial direction at 45 ° intervals and fixed to the main body member 14 at the base end.
9 and the distribution arm 19 is provided between the intermediate rail unit 2 and the distribution rail units 3, 4, 5.
11 is attached to each of the distribution arms 19.
(See FIG. 3) is formed. A movable arm 20 having a slit 20a similar to the slit 19a is pin-coupled to the distal end of each distribution arm 19 at the outer end thereof. The movable arm 20 is connected to the outlet 25b of the intermediate rail unit 2 and the distribution rail unit 3 In order to introduce the hanger 8 by the weight of the hanger 8 from the outlets 99b of 4 and 5, the hanger 8 is arranged to be inclined downward toward the inner end side. Furthermore, the distribution arm 1
9, an air cylinder 18 is fixedly disposed on the column 10. The rod of the air cylinder 18 is extended so that the movable arm 20 is inclined downward toward the outer end as shown by the phantom line in FIG. 6. By tilting the movable arm 20
The hanger 8 is sent out from its own weight to the entrance 25a of the intermediate rail unit 2 and the entrance 99a of the distribution rail units 3, 4, and 5.

The sorting device 1 includes an intermediate rail unit 2
From the outlet 25b of the distributing rail unit or the outlet 99b of the distribution rail units 3 to 5, a set of the distributing arm 19 and the movable arm 2
After receiving the hanger 8 at 0, the distributing mechanism 13 is rotated by a commanded angle (an integer multiple of 45 °) to thereby provide a set of the distributing arm 19 and the movable arm 20.
To the entrance 99 of the distribution rail unit 3 to 5 on either side.
a, or by extending the rod of the corresponding air cylinder 18 to raise the movable arm 20 and supply the hanger 8 to any one of the inlets.

Next, a specific configuration of the intermediate rail unit 2 will be described with reference to FIGS. Each intermediate rail unit 2 has an independent one as shown in FIGS.
FIG. 12 shows a structure in which a pair of left and right support frames 24 are provided long in parallel.
As shown in (1), support pieces 77 are arranged and fixed on the lower surface of each of the support frames 24 at a plurality of locations. Left and right support frames 2
Below the 4, a rectangular support fitting 79 formed by bending a plate material so as to be parallel to the support frame 24,
A plurality of the support pieces 77 are fixed to the support frame 24 with two bolts 78 at intervals. As shown in FIG. 12, an opening 79a that allows the hanger rod 51 to pass through the hanger rod 51 is formed in each support fitting 79.

Over the inside of the plurality of support fittings 79,
2 supported at the same level as the outer end of the movable arm 20
The strip rails 25 (25A, 25B) are disposed at intervals equal to the width of the opening 79a. In addition, rail 2
5, as shown in FIG. 4, both ends are bent inward, and three sprockets 26 having a vertical axis are provided at the upstream end of the bent portion. At the downstream end, three sprockets 2 having a vertical axis are provided.
7 are provided. The six sprockets 26, 2
The endless chain 28 (moving body) mounted on the right side (upper side in FIG. 4) of the inner rail 25A and the left side inner rail 2
It is arranged in the horizontal plane at a predetermined height higher than the rail 25 and slightly inside along the 5A. Further, a chain guide mechanism 29 for guiding the chain 28 is attached to the inside of the plurality of support fittings 79, as shown in FIGS.

As shown in FIG. 2, the left and right supporting frames 24 are connected by a plurality of connecting frames 34, and the supporting frames 24 and the connecting frames 34 have a ladder shape. In addition, support frame 24
3 and 7, between the connecting frames 34 at one end thereof.
As shown in FIG. 8, a chain 28 is passed through a central tensioner sprocket 26a of the sprocket 26.
Is provided with a tension mechanism 30 for adjusting the tension. On the other hand, between the connecting frame 34 at the other end of the support frame 24, as shown in FIGS.
7 is provided with a drive motor 31 (drive means) for driving the center drive sprocket 27a. As shown in FIGS. 5, 14, and 16, a support mechanism 79 at a position corresponding to a downstream portion of the rail 25 corresponding to the support frame 24 on the right side (upper side in FIG. 2) in the chain rotation direction is provided with a stop mechanism. 32 and a detector 33 are mounted. As shown in FIG. 2, the support bracket 7 is located at a position corresponding to a downstream portion of the rail 25 corresponding to the left support frame 24 in the chain rotation direction.
9 is provided with a stop mechanism 32 and a detector 33 similar to those described above.

As shown in FIG. 2, two support frames 34a are provided between the connection frames 34 at both ends of the support frame 24, and a support piece 77 is fixed to the support frames 34a. Like the support frame 24, 2
The support bracket 79 is fixed to the support frame 34 by the bolts 78.
a. Thereby, the bent portion of the rail 25 is held. The upstream end portions of the pair of support frames 24 include:
As shown in FIGS. 2 and 3, the distribution rail unit 3 is disposed on the upper surface of the support plate 12 of the sorting device 1 to which the distribution rail unit 3 is connected.
The lower end portions of the pair of supporting frames 24 are similarly attached to the upper surface of the support plate 12 of the sorting device 1 to which the pair of supporting frames 24 are connected, by being disassembled and fixed by a plurality of bolts with the supporting frames 96 of 4, 5 interposed. The distributing rail units 3, 4, and 5 are fixed so as to be disassembled by a plurality of bolts with the supporting frames 96 interposed therebetween.

As shown in FIG. 4, the entrance 25a of the right rail 25 (upper side in FIG. 2) and the exit 25b of the left rail 25 opposite to the entrance 25a are adjacent to each other in the sorting device 1. In order to connect to the movable arm 20 with a small gap, the opening angle between them is bent toward the approaching side so as to form an angle of 45 °.
And the entrance 25a of the left rail 25, as shown in FIG. 5, the opening angle between them is set to 4 so as to connect to a pair of adjacent movable arms 20 of the sorting device 1 with a small gap.
It is bent toward the approach side so as to form 5 °. The sprocket 27 and the drive motor 31 will be described with reference to FIGS. 4 and 6. The three sprockets 27 are mounted on a bracket 37 fixed to the downstream ends of a pair of support frames 24, One driving sprocket 27a is disposed upstream of the other two sprockets 27 by a predetermined distance, and the driving position of the driving sprocket 27a is shifted upstream so that the driving motor 31 is driven by the intermediate rail unit 2 Can be fixed to the pair of supporting frames 24.

The sprocket 26 and the tension mechanism 3
Referring to FIG. 4, FIG. 7 to FIG. 9, the left and right sprockets 26 among the three sprockets 26 are fixed to a pair of connecting frames 34 by bolts or screws as shown in FIG. As shown in FIG. 4, the tensioner sprocket 26a at the center is mounted on the bracket 38 downstream of the two left and right sprockets 26 so as to be movable in the workpiece transfer direction. ing. That is, the shaft member 39 of the tensioner sprocket 26a is
As shown in FIG. 8, a slide member 41 is provided at the upper end of the shaft member 39, and the tensioner sprocket 26a is configured to be movable by a predetermined distance in the workpiece transfer direction within the range of the slit 40. It is. still,
During the use of the hanger conveyor system HC, the drive motor 31 is constantly driven to rotate in the same direction, and the chain 28 moves around in the direction of the arrow in FIG.

The tension mechanism 30 has a structure in which the tensioner sprocket 26a is movably supported and, as shown in FIG. 9, a pair of guide members 48 are provided on a bracket 38 at predetermined intervals in parallel. Have been. The guide member 48 guides the slide member 41 (tensioner sprocket 26a).
As shown in FIG. 8, the slide member 41 is provided with four guide rollers 49, and the slide member 41 can be moved along the guide member 48 by the guide rollers 49. Further, on the downstream side of the guide member 48, a lower guide wheel 43 is rotatably supported by a support piece 48a fixed to the upper surface thereof. As shown in FIG. 7, a frame 42 is provided upright on the pair of connection frames 34, and the frame 42 supports a guide wheel 44 with a one-way clutch and an upper guide wheel 45.

A chain member 47 having one end fixed to the slide member 41 is guided by three guide wheels 43, 44 and 45, and a weight 46 is fixed to the other end as shown in FIG. I have. For this reason, the tension of the chain 28 can be maintained constant by constantly urging the tensioner sprocket 26a in the downstream direction via the chain member 47 by the constant gravity acting on the weight 46. Thus, the three sprockets 26 and the tension mechanism 30 could be mounted on the pair of support frames 24 of the intermediate rail unit 2 via the pair of connection frames 34.

Here, the chain guide mechanism 29, the stop mechanism 32, and the detector 33 of the intermediate rail unit 2 are described.
Before describing the structure, a specific structure of the hanger 8 will be described with reference to FIGS. Each hanger 8 has
As shown in FIG. 12, a hanger rod 51 extending vertically downward from the center of the carrier body 50 is provided, and an engagement disc 52 made of a sprocket that engages the chain 28 from outside is provided on the upper end of the carrier body 50. Is provided. Further, a friction clutch mechanism 53 as shown in FIG. 13 is formed and arranged between the carrier body 50 and the engagement disc 52. As shown in FIG. 3, a work holding portion 54 capable of holding a plurality of works is provided below the hanger rod 51. Note that the hanger 8 has basically a symmetric structure in the left-right direction and the front-back direction.

As shown in FIG. 11, the carrier body 5
0 is formed to be elongated in the transport direction.
Rolling rollers 56 that roll on the rail 25 via a shaft member 55 are provided on both left and right sides of the center in the length direction. As shown in FIG. 12, the pair of left and right shaft members 55 protrude outside of the rolling rollers 56 by a predetermined length, and a sleeve 57 is rotatably fitted to the shaft members 55. Also, as shown in FIGS. 10 and 11, both ends of the carrier body 50 are located slightly above the upper surface of the rail 25 and are positioned on the rail 25 when the hanger 8 swings in the transport direction. A swing regulating wheel 58 that contacts the upper surface and regulates the swing of the hanger 8 is provided.

Further, at the lower part of the carrier body 50, FIG.
As shown in FIG. 1 and FIG. 12, a pair of vertical bosses 5 are provided at predetermined positions from the hanger rod 51 to the upstream side and the downstream side.
9 are projectingly provided between the pair of rails 25, and guide rollers 60 are respectively mounted on the vertical bosses 59 so as to be rotatable around a vertical axis, and the carrier body 50 is formed by the guide rollers 60 and the pair of rails 25. Restricts rotation around the vertical axis. As shown in FIG. 11, rubber members 61 for cushioning are fixed to both ends of the carrier body 50 with screws 62, and the rubber members 6 of the hanger 8 which are conveyed adjacent to each other.
The distance between the hanger rods 51 is maintained at a predetermined distance by contact between the hanger rods 51. Therefore, the hanger 8 is movable along the rails 25 by rolling the pair of rolling rollers 56 on the pair of rails 25.

FIG. 13 shows the friction clutch mechanism 53.
With reference to FIG. 4, a vertical cylindrical hole 67 is formed in the boss 66 at the upper end of the carrier body 50 in the longitudinal direction, and the boss 66 is inserted through the metal 68 into the center of the engaging disc 52. A vertical shaft member 69 that rotatably supports the engaging disk 52 is inserted into the cylindrical hole 67 and screwed to the carrier body 50. A clutch plate 70 made of an oil-impregnated resin is mounted on both upper and lower surfaces of the engaging disk 52. Further, both clutch plates 70 are externally fitted to the shaft member 69, and the convex portions 52a on both upper and lower surfaces of the engaging disk 52 are provided. Are fitted into the corresponding small holes of the clutch plate 70 so that the engaging disc 52 and the two clutch plates 70 cannot rotate relative to each other. A washer 71 is mounted between the lower clutch plate 70 and the upper end of the boss 66, and the upper clutch plate 70 and the head 69 of the shaft member 69.
The engaging disc 52 and the pair of clutch plates 70 are resiliently sandwiched between the pair of washers 71 by the clutch spring 72 externally mounted on the shaft member 69 in the cylindrical hole 67. I have.

Since an appropriate frictional force acts between the upper and lower clutch plates 70 and the washers 71 by the elastic force of the clutch spring 72, the movement of the hanger 8 in the chain circling direction is not restricted. Even if the transport driving force from the nip acts on the engaging disk 52, the engaging disk 52 does not rotate relative to the carrier body 50, and the hanger 8 moves on the rail 25 integrally with the chain 28. Also,
When the movement of the hanger 8 is prevented by the stop mechanism 32 described later, a slip occurs between the upper and lower pairs of clutch plates 70 and washers 71, and the engaging disk 52 rotates relative to the carriage body 50, and the hanger 8 Are kept stopped.

As shown in FIG. 10, a plurality of engaging teeth 52a (engaging portions) meshing with the chain 28 are formed on the engaging disk 52 at a constant pitch, as shown in FIG. Also,
In the plane portion of the engaging disc 52, eleven bit slits 73 for generating a reference pulse are provided at 12 equally-divided positions on the circumference, and the bit slit 73 is not formed in the 12 equally-divided positions on the circumference. One point is the origin position. Further, the engaging disc 52
Inside the bit slit 73 in the plane portion of
Eleven through holes 74 are formed on the radiation connecting the rotation center of the engagement disk 52 and the bit slit 73, and a closing plate 75 for closing the through holes 74 is provided differently for each hanger 8. I have. Therefore, the hanger 8 can be made of 2 11 −1 = 2047 types. The hanger 8 thus configured is stopped by a stop mechanism 32 to be described later, and the detector 33 to be described later is driven by these bit slits 73, while the engaging disk 52 is rotating clockwise in FIG. The position of the through hole 74 and the closing plate 75 is detected, and a detection signal such as an identification code for identifying the type (number) of the hanger 8 is output.

Next, the chain guide mechanism 29, the stop mechanism 32, and the detector 33 of the intermediate rail unit 2 will be described with reference to FIGS. 2 to 4 and FIGS. The chain guide mechanism 29 is configured as shown in FIG. 12. A guide member 80 made of a synthetic resin made of an integrated component or a plurality of components for guiding the inner portion of the chain 28 is provided on the inner portion of the support bracket 79. As shown in FIG. 4 and FIG. 12, a guide member 81 made of synthetic resin or an integral part or a plurality of parts for guiding the bottom of the chain 28 is disposed along the obliquely upper part of each inner rail 25A. Have been.
Although the guide members 80 and 81 are not arranged above the bent portion of the rail 25 as shown in FIG. 4, they may be arranged continuously. These guide strips 80, 8
1 is integrally fixed together with the attachments 82 and 83 by screws 84, and the attachments 82 and 83 are fixed to the support metal 79 by screws (not shown).

Here, in order to prevent the engaging disk 52 from coming off the chain 28 due to the swinging of the hanger 8 in the left-right direction, as shown in FIG.
A swing regulating member 8 composed of an integral part or a plurality of parts having an L-shaped cross section extending along the guide strip 81 and the rail 25.
5 are provided. The swing regulating member 85 is fixed by the screw 84 so as to be in contact with the guide strip 81. Although not shown in FIG. 4, the swing regulating member 85 is disposed along the entire length of the inner rail 25A. Have been. The restricting portion 85a, which is the tip of the swing restricting member 85,
As shown in the figure, the hanger 8 is provided in a state of approaching the upper end of the shaft member 55 and the sleeve 57 (corresponding to the protrusion member 86) projecting inward from the carrier body 50 with a slight gap. . Therefore, when the hanger rod 51 slightly swings inward (clockwise in FIG. 12), the projection member 86 abuts on the regulating portion 85a from below, and the swing of the hanger 8 is regulated. In addition, as shown by a virtual line in FIG. 12, it is also possible to provide a swing regulating member 85i corresponding to the outer projecting member 86 along the outer rail 25B.

Next, the stop mechanism 32 and the detector 33
2 and 5, and FIGS. 14 to 16, the stop mechanism 32 and the detector 33 are connected to the rail 2
5 is disposed inside the support fitting 79 which is one more upstream in the chain circulating direction than the support fitting 79 provided at the outlet 25b, and is supported by the support frame 24 via the support fitting 79. As shown in FIG. 16, a fixing plate 88 is fixed to the inner upper surface of the support bracket 79 by bolts 87, and the fixing plate 88 is fixed to the fixing plate 88 as shown in FIG.
A support shaft 89 to which the locking arm 90 is connected by a bent portion is attached with a stepped screw.
9 can be rotated. The locking arm 90 is provided on the shaft member 6 protruding from the upper end of the carrier body 50 of the hanger 8.
The head 69a is locked from the downstream side in the rotation direction of the chain 28, and is horizontally swingable between a locking position shown by a solid line in FIG. 14 and a retracted position shown by a virtual line in FIG.

Further, a torsion spring 91 for urging the locking arm 90 to the locking position is wound around the support shaft 89.
As shown in FIGS. 14 and 16, the holding plate 7 is provided on the outer upper surface of the support fitting 79 by the bolt 87.
9a, an air cylinder 92 is provided. The air cylinder 92 is in contact with the side surface of the contact arm portion 92c of the locking arm 90. When the piston 92a is projected against the torsion spring 91, Lock the arm 90 to the support shaft 89
To the retreat position with the center as the center. The contact arm 92
The contact portion 92b on the end face c is formed in an arc shape as shown in FIG. Usually, the locking arm 90 is arranged at the locking position. A V-shaped locking portion 90 for locking the head 69a of the shaft member 69 is provided at the tip of the locking arm 90.
a is formed, and the shaft member 6 is formed by the V-shaped locking portion 90a.
9 is locked without shifting in the left-right direction.

The mounting bracket 79 at a position corresponding to the engaging disk 52 of the hanger 8 stopped by the stop mechanism 32
As shown in FIGS. 14 and 16, a photointerrupter 33 having two sets of light-emitting units and light-receiving units
A detector 33 is formed from a and 33b. The photo interrupter 33a is arranged at a position facing the bit slit 73, and detects the origin position and the position of the bit slit 73 based on the rotation speed of the chain 28, that is, the rotation speed of the engagement disk 52. In addition, the photo interrupter 33
b is disposed at a position facing the through hole 74 and the closing plate 75, detects whether the through hole 74 or the closing plate 75 based on the position data of the bit slit 73 of the photo interrupter 33a, and outputs the data to a control unit (not shown). To supply. Then, the control unit identifies the type (number) of the hanger 8 based on the data from the photo interrupters 33a and 33b, and detects that the hanger 8 is locked by the stop mechanism 32.

In this way, the number of the hanger 8 is identified by the detector 33, and the sorting arm 19 of the sorting device 1 and the outlet 25b of the rail 25 as shown in FIG.
And the rod 92a of the air cylinder 92
Is projected. This causes the locking arm 90 to rotate to the retracted position about the support shaft 89 against the torsion spring 91. Then, the locking of the hanger 8 by the locking arm 90 is released, and the hanger 8 moves toward the outlet 25 b of the rail 25 (in the direction of arrow A) by the rotation of the chain 28. At this time, since the locking arm 90 is located at the retracted position, the following hanger 8 is formed by the arc-shaped end face of the contact portion 90b of the locking arm 90, so that the head 6
9a is locked, the hanger 8 is not transported continuously, and the hanger 8 is surely stopped one by one. Then, when the piston 92a of the air cylinder 92 is retracted, the locking arm 90 is rotated to the locking position by the torsion spring 91. With this rotation, the head 69a of the shaft member 69 of the succeeding hanger 8 slides on the arcuate end face of the contact portion 90b of the locking arm 90, and the subsequent hanger 8 moves.
Is smoothly transported, the shaft member 69 is locked by the V-shaped locking portion 90a, and the hanger 8 is locked. At this time, since the rubber member 61 of the subsequent hanger 8 is in contact with the rubber member 61 of the hanger 8 being locked,
Also not conveyed.

Next, the work distribution rail unit 5 will be described with reference to FIGS. 1, 2, 5, and 17. FIG.
Each distribution rail unit 5 for work is, as shown in FIG.
It has a structure completely unitized so as to be one independent device, and U-shaped supporting frames 96 in plan view are arranged in parallel at intervals. On the lower surface of the support frame 96, support pieces 97 are arranged and fixed at a plurality of locations. Below the support frame 96, each support piece 97 and two support rods 98 are used.
A pair of rails 99 (99A, 99A) having a substantially U shape in plan view
B) is fixed. As shown in FIG. 17, a rail dividing mechanism 102 for removing the hanger 8 from the distribution rail unit 5 is provided in the middle of the pair of rails 99 on the upstream side in the work transport direction. Subsequently, as shown in FIGS. 1 and 17, a stop mechanism 100 for stocking the hanger 8 for sewing work is provided at a downstream portion of the curved portion of the pair of rails 99 in the work transfer direction.
Is provided. Further, a lift mechanism 101 for lifting the hanger 8 by a predetermined height is provided on the pair of rails 99 downstream of the stop mechanism 100.
And, on the slightly upstream portion of the exit portion 99b of the rail 99,
A timing stopper mechanism 130 for determining the timing of returning the hanger 8 to the sorting device 1 is provided.

As shown in FIG. 6, the end of the support frame 96 is fixed to the support plate 12 of the sorting device 1 by a bolt (not shown) so as to be disassembled. The entrance 99a and the exit 99b of the rail 99 are at the same height as the outer end of the movable arm 20 of the sorting device 1 and are connected to a pair of adjacent movable arms 20 of the sorting device 1 with a slight gap. As a result, the angle is bent toward each other so that the opening angle between them is 45 °. The rail 99 is shown in FIG.
As shown in FIG. 7, the rail cutting mechanism 10 is moved from the entrance 99a.
2 and the lift mechanism 101 passing through the stop mechanism 100
To a lower end portion of the first member (e.g., an inclination angle of 2 to 5 degrees). Further, the rail 99 is connected to the lift mechanism 101.
From the upper end portion to the outlet portion 99b through the timing stopper mechanism 130, as in the case described above.

In the stop mechanism 100, FIG.
As shown in FIG. 7, an air cylinder 103 is provided upright on a support plate 105, and one end of a locking arm 104 rotatably supported by the support plate 105 has one end.
3 is fixed to the rod by a stepped screw. Also,
When the rod of the air cylinder 103 is extended, the locking arm 104 rotates to lock the projecting member 86 of the hanger 8. Further, a first sensor (not shown) is attached to the support plate 105, and the first sensor determines whether or not the hanger 8 is stopped by the stop mechanism 100.

Next, the lift mechanism 101 will be described with reference to FIGS. 17 to 20. In the distribution rail unit 5 for work, as shown in FIG. It is formed so as to be gently inclined toward the side, and is configured to be conveyed and driven by the own weight of the hanger 8 and its work. Further, since the entrance 99a and the exit 99b of the rail 99 have the same height level, To send the hanger 8 to the exit 99b, the hanger 8
Must be lifted by the lift mechanism 101 to a predetermined height. For this reason, the outlet 99b of the pair of rails 99
As shown in FIG. 19, a pair of lift rails 107 inclined upward toward the downstream side in the transport direction are provided on the slightly upstream portion.
Is provided.

A second sensor (not shown) is provided at an upstream portion (lowest position) of the pair of lift rails 107 in the transport direction. It is determined whether or not it exists at the lowermost position. Further, a swing arm 108 is rotatably disposed inside the inner lift rail 107, and the base end of the swing arm 108 is swung to the inner lift rail 107 by a stepped screw member 109. It is pivoted freely. Further, at the tip of the swing arm 108, an engaging portion 108a is formed on the hanger 8 which can be engaged from below with a projecting member 86 (corresponding to an engaging member) projecting inward of the inner rail 99A. I have. The lowermost position of the pair of lift rails 107 is a hanger 8 for performing a sewing operation.
Is the stop position.

FIG. 18 shows the inside of the swing arm 108.
As shown in FIG. 2, an air cylinder 110 (corresponding to a drive cylinder) is provided, and the base end of the cylinder body of the air cylinder 110 is pivotally attached to the inner lift rail 107 by a horizontal pin 111. , Air cylinder 1
A connector 112 fixed to the tip of the ten rods 110a
Is connected to a bracket portion 108b at the upper end of the base end portion of the swing arm 108 by a horizontal pin 113. When the rod 110a of the air cylinder 110 is completely retracted, the swing arm 108 is at the swing lower limit position (the position shown in FIG. 19), and the engaging portion 108a does not protrude from the upper surface of the rail 99. Retreat, and air cylinder 11
When the 0 rod 110a is extended, the engaging portion 108a pushes up the projection member 86 inside the carrier body 50 of the hanger 8 and swings upward by about 90 degrees (the position shown in FIG. 20). become. As described above, the swing arm 108 is swung upward by the air cylinder 110 to push up the inner protrusion member 86, so that the hanger 8 is moved from the lower end position of the lift rail 107 to the lift rail 10.
7 can be lifted to the upper end position.

Further, when returning the swing arm 108 from the swing upper limit position to the swing lower limit position, the swing arm 108
The stopper arm 114 for preventing the engaging portion 108a of the hanger 8 from interfering with the projection member 86 of the subsequent hanger 8 is provided.
As shown in FIG. 20, it is disposed between the inner lift rail 107 and the swing arm 108. The base end of the stopper arm 114 is pivotally attached to the inner lift rail 107 by a stepped screw 115 so as to be swingable, and the tip end of the stopper arm 114 is provided with a rolling roller 56 of the subsequent hanger 8. Lift rail 10 inside
A locking portion 114a is formed to lock a portion (also corresponding to an engagement member) projecting slightly inward from the lower side from the downstream side, and the stopper arm 114 is stretched between the stopper arm 114 and the lift rail 107. The tension spring 116 is urged in the upward swing direction.

The stopper arm 114 has the structure shown in FIG.
As shown in (1), a pin member 117 that can be engaged with the lower end of the engaging portion 108a of the swing arm 108 is protrudingly provided. When the swing arm 108 is located at the swing lower limit position, the swing arm 108 pushes the pin member 117 downward, so that the stopper arm 114 does not protrude above the upper surface of the rail 99 (see FIG. 19). Position),
Further, while the swing arm 108 is moving upward from the swing lower limit position, the stopper arm 114 is not pushed downward by the swing arm 108, so that the tension spring 1
With the urging force of 16, the rocker swings up to the locking position (the position shown in FIG. 20), and the position is regulated by the cushioning member 119 fitted on the pin 118 protruding from the lift rail 107.

As shown in FIG. 20, when the stopper arm 114 is at the locking position, the rolling roller 56 of the succeeding hanger 8 is positioned at a position slightly upstream of the lower end position of the lift rail 107. When the swing arm 108 returns to the lower swing limit position, the engaging portion 108a of the swing arm 108 There is no interference with the projection member 86. When the swing arm 108 returns to the swing lower limit position, the stopper arm 114 is switched to the retracted position by the swing arm 108, and the subsequent hanger 8 is lifted because the lift rail 107 is inclined. To the lower end position (sewing standby position of the hanger 8). When a lift button (not shown) is pressed, the rod 110a of the air cylinder 110 is extended, and the hanger 8 is lifted by the swing arm 108. At this time, the pair of rolling rollers 56 is connected to the pair of lift rails 1.
07, the carrier body 50 is lifted while maintaining a horizontal state.
Downstream half and a pair of swing regulating wheels 58 attached thereto.
Moves between the pair of lift rails 107.

The timing stopper mechanism 130 is disposed between the upper end position of the lift rail 107 and the outlet 99b of the rail 99.
It has the same configuration as 00. That is, as shown in FIG. 17, in the timing stopper mechanism 130, one end of the locking arm 134 is connected to the rod of the air cylinder 133 erected, and the distribution arm 19 of the distribution device 1 and the exit of the rail 99 are connected. When the portion 99b is not aligned on a straight line, the protrusion member 86 of the hanger 8 is locked by the locking arm 134. Further, the timing stopper mechanism 130 is also provided with a third sensor (not shown) for determining whether or not the hanger 8 exists at that position.

Next, the rail dividing mechanism 102 will be described. As shown in FIG. 17, the rail dividing mechanism 102 is provided on the outer rail 99B at a position slightly downstream of the entrance 99a of the rail 99. A predetermined length portion of the rail 99B is formed on the dividing rail 120,
As shown in FIG. 22, the dividing rail 120 is formed to have a half width of the rail 99B. Also, the dividing rail 120
21 is connected movably in the transport direction by a stepped screw 123 inserted into a long hole 122 formed in the narrow rail portion 121 of the rail 99B, as shown in FIG.
Further, a metal piece 124 is fixed to the downstream end of the dividing rail 120, a U-shaped notch 125 is formed at the end of the rail 99B on the downstream side of the dividing rail 120, and a screw 126 with a knob having a knob 126a is a U-shaped notch. The distal end portion is inserted into a screw hole of the metal piece 124.

During normal work transfer, the dividing rail 12
0 is held in the state shown in the figure, and since the screw 126 with the knob is fastened, the rail 99B is in a continuous state without being divided. However, when any hanger 8 needs to be removed, Loosen the screw with knob 126,
By moving the dividing rail 120 to the upstream side (the direction of arrow B), the dividing rail 120 is switched to the downward state as shown by the imaginary line in FIG. 21, and the pair of the carrier main body 50 is separated from the dividing point of the rail 99B. By removing the vertical boss 59 and the swing regulating wheel 60, the hanger 8 can be removed. After the removal, the dividing rail 120 is restored to the illustrated state.

Next, the input distribution rail unit 3 and the take-out distribution rail unit 4 will be described. Basically, the input distribution rail unit 3B on the left side is provided with the support frame 96 and the support frame 96 in the work distribution rail unit 5. Although the horizontal length of the parallel portion of the pair of rails 99 is enlarged, as shown in FIG. 1, the stopper mechanism 100 is located upstream of the curved portion of the rail 99 (on the side of the intermediate rail unit 2 in FIG. 1). ). Further, the timing stopper mechanism 130 is disposed near the outlet 99b of the rail 99. Further, the timing stopper mechanism 13
0 and a lift mechanism 101, a holding mechanism (not shown) for holding a plurality of hangers 8 at a predetermined interval is provided to facilitate mounting of a work on the hanger 8; A fourth sensor (not shown) for detecting the presence / absence of the hanger 8 closest to the mechanism 101 is provided near the lift mechanism 101. On the other hand, as shown in FIG. 1, the input distribution rail unit 3A on the right has a left-right symmetrical structure with the distribution rail unit 3B on the left centering on the distribution device 1, as shown in FIG. A detailed description of these input distribution rail units 3A and 3B will be omitted.

As shown in FIG. 1, the right take-out distribution rail unit 4A basically has the length in the left-right direction of the parallel portion of the support frame 96 and the pair of rails 99 in the work distribution rail unit 5. However, the stop mechanism 100 is disposed on the intermediate rail unit 2 side of the rail 99, similarly to the left-side distributing rail unit 3B. Similarly, the timing stopper mechanism 130 is also disposed near the outlet 99b of the rail 99. The left take-out distribution rail unit 4B has a symmetric structure with the right take-out distribution rail unit 4A, like the input distribution rail unit 3. These input distribution rail units 4A,
Detailed description of 4B is omitted.

A pair of left and right input distribution rail units 3
The reason why the A and 3B are symmetrical is that as shown in FIG. 1, the input worker 6 linearly reciprocates left and right as shown by the arrow C, while distributing these input distribution rail units 3A and 3B. This is because the work can be efficiently put into the large number of hangers 8 of 3B. Further, the pair of left and right take-out distribution rail units 4A and 4B is formed to be symmetrical in structure, as shown in FIG. However, this is because the work of the finished product can be efficiently removed from the large number of hangers 8 of the take-out distribution rail units 4A and 4B.

Next, the hanger conveyor system HC
Briefly describing the control system, first, the servo motors 17 and the air cylinders 18 of the plurality of
And the air cylinder 92 of the motor 31 and the stop mechanism 32 of the plurality of intermediate rail units 2, and the air cylinder 11 of the lift mechanism 101 of the plurality of distribution rail units 3 to 5.
A control unit for controlling 0 and the like is provided. The detectors 33 of the plurality of intermediate rail units 2
Is supplied to a control unit, to which a keyboard, a CRT display, and a printer are connected. The air cylinder 103 of the stop mechanism 100 of each of the distribution rail units 3 to 5 is operated by the operator 6 via a foot switch or the like. In the control unit, a control program for controlling the various devices to be controlled and data of the transport path of each hanger 8 associated with the identification code of each hanger 8 are input in advance, or from a host computer (not shown). The data is transferred, and the control unit is configured to control the transport path of each hanger 8 by controlling various control target devices based on the detection signal from the detector 33.

Hereinafter, the hanger conveyor system HC
The operation of will be described. First, a plurality of empty hangers 8 are placed on the input distribution rail unit 3 while waiting in the direction of arrow C.
When the worker 6 stops the work in sequence on the empty hanger 8, each of the hangers 8 flows to the sorting device 1 at the uppermost stream, is sorted by the sorting device 1, and is intermediated in the downstream side. It is supplied to the rail unit 2 and transported. When the detector 33 detects the identification code of the hanger 8 during the transport, the next sorting device 1 is controlled based on the detection signal, and the sorting device 1 is controlled.
Thus, the work is distributed to one of the two work distribution rail units 5 and the next intermediate rail unit 2.

The hanger 8 is used for the work distribution rail unit 5
17, the hanger 8 moves by its own weight while waiting along the rail 99 due to the inclination of the rail 99 of the distribution rail unit 5 as shown in FIG. Is stopped. Then, at the work station at the stop position, the work is removed from the hanger 8 and a predetermined sewing operation is performed. Thereafter, the work is stopped again by the hanger 8, and when the work passes through the stop mechanism 100, the hanger 8 is again moved to the rail 99. As shown in FIG. 19, the lift rail 107 moves to the lower end position of the lift rail 107 and stops. At this time, since the swing arm 108 is at the swing lower end position and the pin member 117 is pressed down by the swing arm 108, the stopper arm 114 is held at the retracted position shown in FIG. Is not engaged.

If the subsequent hanger 8 moves before the lift mechanism 101 operates, both hangers 8 move.
Is held in a state where the rubber members 61 are in contact with each other. Thereafter, when the rod 110a of the air cylinder 110 is extended, the swing arm 108 swings counterclockwise around the stepped screw member 109. Accordingly, the projecting member 8 of the hanger 8 is moved by the engaging portion 108a of the swing arm 108.
6, the hanger 8 is swung along the lift rail 107, and is moved to the swing upper limit position shown in FIG. At this time, with the swing of the swing arm 108, the stopper arm 114 also swings and is disposed at the locking position protruding from the upper surface of the rail 99, so that the stopper arm 114 at this locking position and the subsequent The rolling roller 56 of the hanger 8 is engaged, and the following hanger 8 is engaged.
Are held as shown in FIG.

The rod 11 of the air cylinder 110
When 0a is retracted, the swing arm 108 swings clockwise around the stepped screw member 109. Accordingly, the pin member 117 of the swing arm 108 engages with the stopper arm 114, and swings the stopper arm 114 to a retracted position where the stopper arm 114 does not protrude above the upper surface of the rail 99. At this time, as shown in FIG. 19, the tip of the swing arm 108 is located upstream of the tip of the stopper arm 114 (FIG. 19).
Does not protrude to the right), and does not come into contact with the subsequent hanger 8 held by the stopper arm 114. When the stopper arm 114 swings to the retracted position, the inclination of the rail causes the subsequent hanger 8 to move.
Moves downstream to the position shown in FIG.

On the other hand, as shown in FIG. 20, the hanger 8 oscillated by the oscillating arm 108 to the upper end position of the lift rail 107 is moved out of the exit portion 99 by the inclination of the rail 99.
b and is supplied to the sorting device 1 to be sorted in the same manner as described above. Then, in the same manner, the hanger 8 is sequentially transported to the downstream side via a plurality of work stations, and finally transported to the take-out distribution rail unit 4 and along the rail 99 of the take-out distribution rail unit 4. The workpiece flows to the arrow D side while waiting, and the unloading worker removes the completed or unfinished workpiece from the hanger 8. Thereafter, the empty hanger 8 is moved to the plurality of sorting devices 1.
Is transported to the upstream side via the plurality of intermediate rail units 2 and returned to the input distribution rail unit 3 again.

Accordingly, the lift mechanism 101 has a simple structure including a pair of left and right lift rails 107, a swing arm 108, an air cylinder 110, a stopper arm 114, and the like. To the swing arm 10
While the roller 8 is moving upward from the lower swing limit position, the roller 5 of the subsequent hanger 8 is moved by the stopper arm 114.
6 to lock and hold the lift rail 107 in a stopped state at a position slightly upstream from the lower end position of the lift rail 107.
When the swing arm 08 returns to the swing lower limit position and swings, the swing arm 108 and the protruding member 86 of the subsequent hanger 8 are not buffered, and the swing arm 108 can reliably return. In this way, even if the hangers 8 are continuously transported, they can be lifted one by one without fail.
The transfer of the hanger 8 can be continuously and smoothly performed. As described above, by linking the stopper arm 114 to the swing arm type lift mechanism 101, the lift mechanism 101 having a simple structure and excellent operation reliability is obtained.

Incidentally, a solenoid type actuator may be provided in place of the air cylinder 110.
17 may be provided on the swing arm 108 side, and the stopper arm 114 may be pushed to the retracted position by the swing arm 108 at the swing lower limit position. In the above-described embodiment, the distribution rail units 3 to 5 are configured to be conveyed by the self-weight method. However, a chain drive system similar to that of the intermediate rail unit 2 may be provided. The configuration of the units 2 to 5 is merely an example, and is not limited to the configuration of the embodiment. Further, in the above-described embodiment, the transport direction of the input distribution rail unit 3A and the take-out distribution rail unit 4B is set in the clockwise direction, but may be set in the counterclockwise direction. As the take-out distribution rail unit 4, the same one as the work distribution rail unit 5 can be used.

The overall configuration of the hanger conveyor system HC is, as shown in FIG. 23, a plurality of sorting devices 1, a plurality of intermediate rail units 2, a pair of input distribution rail units 3, and a pair of unloading units. The distribution rail unit 4 for work and the plurality of distribution rail units 5 for work can be appropriately combined to form various types of hanger conveyor systems.

[0060]

As described above in detail, according to the hanger conveyor lifting device of the first aspect, the swing arm, the drive cylinder and the stopper arm are combined, and the operation of the stopper arm is linked to the operation of the swing arm. By doing so, a lift device having a simple structure and excellent operation reliability can be obtained.

According to the lift device for a hanger conveyor according to the second aspect, the same effect as that of the first aspect is obtained, and the elastic member for biasing the stopper arm to the locking position is provided. The stopper arm can be switched from the retracted position to the locked position with an elastic member having a simple structure.

[Brief description of the drawings]

FIG. 1 is an overall configuration plan view of a hanger conveyor system according to an embodiment.

FIG. 2 is a schematic plan view of a distribution device, an intermediate rail unit, and a work distribution rail unit.

FIG. 3 is a side view of a sorting device and an intermediate rail unit.

FIG. 4 is an enlarged plan view of a main part of the intermediate rail unit.

FIG. 5 is an enlarged plan view of a main part of a distribution device, a part of an intermediate rail unit, and a work distribution rail unit.

FIG. 6 is an enlarged side view of a main part of a sorting device and an intermediate rail unit.

FIG. 7 is a vertical sectional side view of the tensioner device.

FIG. 8 is a sectional view taken along line 8-8 in FIG. 7;

FIG. 9 is a sectional view taken along line 9-9 of FIG. 7;

FIG. 10 is a plan view of a rail and the like of an intermediate rail unit, a chain, and a hanger.

FIG. 11 is a side view of rails and the like of an intermediate rail unit, and main parts of a chain and a hanger.

FIG. 12 is an enlarged sectional view taken along line 12-12 of FIG. 2 including a hanger;

FIG. 13 is a longitudinal sectional front view of a main part of a hanger, a chain guide mechanism, and a rail.

FIG. 14 is a plan view of a stop mechanism of the intermediate rail unit.

FIG. 15 is a side view of a hanger and a stop mechanism of the intermediate rail unit.

FIG. 16 is an enlarged sectional view taken along line 16-16 of FIG. 2 including a hanger;

FIG. 17 is a front view of the work distribution rail unit (as viewed from arrow 17 in FIG. 2).

FIG. 18 is a plan view of a lift mechanism of the work distribution rail unit.

FIG. 19 is a front view of the lift mechanism of the work distribution rail unit before the lift.

FIG. 20 is a front view of the lift mechanism of the work distribution rail unit after lift.

FIG. 21 is a front view of a rail dividing mechanism of the work distribution rail unit.

FIG. 22 is a plan view of a rail dividing mechanism of the work distribution rail unit.

FIG. 23 is a schematic plan view of the entire configuration of a hanger conveyor system according to a modification.

[Explanation of symbols]

 HC hanger conveyor system 8 hanger 55 shaft member 56 rolling roller 57 sleeve 86 projecting member 99 rail 101 lift mechanism 107 lift rail 108 swing arm 108a engaging portion 110 air cylinder 114 stopper arm 114a locking portion 116 tension spring 117 pin Element

Continuation of the front page (58) Fields investigated (Int. Cl. ⁷ , DB name) B65G 9/00 B65G 35/00 B65G 47/61 B65G 47/78 B65G 47/82

Claims (2)

(57) [Claims] A rail disposed along a transport path;
And a hanger having a rolling roller that is movably supported on the rails, the hanger conveyor for conveying articles through the hanger, provided in the middle portion of the rail, the lower end position the hanger
An inclined lift rail for lifting a predetermined height from the installation position to an upper end position; an engaging member provided on the hanger and protruding to the side of the rail; and a vertical swing at a base end of the lift rail. A swing arm movably pivotally supported and having an engagement portion at its distal end capable of engaging the engagement member from below ; a swing arm having the swing portion having the engagement portion at the lower end position;
The lower swing position to engage the engagement member from below
Between the swing upper limit position corresponding to the upper end position
A drive cylinder for switching and driving; a lifting portion vertically pivotally supported at a base end portion at the base end, and a locking portion for locking the engaging member from a downstream side in the transport direction at a distal end portion; When the moving arm is at the swing lower limit position, it is held at the retracted position by the swing arm, and when the swing arm is moving upward from the swing lower limit position, the engaging member of the subsequent hanger is locked by the locking portion. A lift device for a hanger conveyor, comprising: a stopper arm at a locking position for locking. 2. The hanger conveyor lift device according to claim 1, further comprising an elastic member for urging the stopper arm to a locking position.