JP2962153B2 - Transfer equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer device for pushing and pulling a load between a load supporting portion on a transfer device side and a load support table on a shelf or the like provided beside a traveling route of the transfer device. It is about.

[0002]

2. Description of the Related Art In a transfer apparatus of this type, a load support portion such as a load support section and a shelf on a transfer apparatus side slidably supports a load in a direction perpendicular to a traveling path direction of the transfer apparatus. In addition, on the side of the transport device, there is provided a retreating movable body which is capable of reciprocatingly moving in the load sliding transfer direction, and the retractable moving body is disengaged from the load with an upwardly protruding posture engaging with the bottom of the load. A load pushing / pulling device that can be switched between the retracted position and the retracted position is provided. When the load is slid and transferred from the load support table such as a shelf to the load support section on the transfer device side, move the moving object to the advance limit position and then move the load pushing / pulling tool from the evacuation position. The load is switched to the upwardly protruding position, and the loading / unloading tool in the upwardly protruding position is hooked by a load pushing / pulling tool in the upwardly protruding position to pull out the load on the load support unit on the transfer device side. When the load on the load support section of the transfer device is slid and transferred onto a load support such as a shelf, the load push / pull tool is switched to the upwardly protruding posture, and then the retreating movable body is advanced to the advance limit position. .

[0003] The above-mentioned transfer device requires a driving means for switching the attitude of a load pushing / pulling tool provided on the retreating and moving body. Either a motor or solenoid, which is the power source of the push-pull retracting drive means, is mounted on the retractable moving body, or the rotational force of a power source such as a motor mounted on the transfer device is used to load the load on the retractable moving body. Transmission means for transmitting the push-pull tool to the retracting drive means is provided.

[0004]

In the above-mentioned conventional structure, a power source for driving the loading / unloading tool is required, so that not only the whole apparatus becomes large and heavy but also the cost increases. . In particular, in the case of a type in which a power source is mounted on the moving member, a power supply means capable of supplying power to the power source on the moving member side without being affected by the movement of the moving member is required. In the case of the type for transmitting the rotational force to the retreating moving body, a complicated and expensive transmission means is required.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and its features are indicated by reference numerals in the embodiments described later. A transfer device that transfers a load between the load support section (7) on the side of the transfer device (1) and a load support table (24) on a shelf or the like provided on the side of the traveling path of the transfer device (1). There is a moving-in / out moving body (10), a loading / pulling tool (13a, 13b), and a lifting / lowering drive means (17) for the loading / pulling tool (13a, 13b). And load support
(24) slidably supports the load in a direction perpendicular to the traveling path direction of the transfer device (1), and the moving body (10) is provided in the transfer device (1), and It can move back and forth in the sliding transfer direction, and the load pushing and pulling devices (13a, 13b)
0), and can be switched between an upwardly protruding posture (S1) that engages with the bottom of the load and a retracting posture (S2) that separates from the load, so that the loading / pulling tools (13a, 13b) can move in and out. Driving means (17)
Pushes the reciprocating motion of the horizontal moving body (18a, 18b) and the horizontal moving body (18a, 18b) provided on the reciprocating moving body (10) so as to be able to reciprocate in the direction of the travel path of the transfer device (1). Movement conversion mechanism (15, 19a, 19) that converts the posture of the pulling tool (13a, 13b)
b) and a positioning mechanism (20) for positioning the traversing body (18a, 18b) at the position corresponding to each posture of the load / pull tool (13a, 13b)
And a fitting member (21a, 21b) protruding from the laterally moving body (18a, 18b) in the direction in which the moving body (10) advances, and a moving body ( 10) is advanced to the advance limit position, the fitting member (21a, 21b) is fitted with the fitted member (22), and the fitting member (21a, 21b) is fitted with the fitted member (22). ), The laterally moving body (18a, 18b) moves laterally with respect to the moving out and moving body (10), and the laterally moving body (18a, 18b) moves.
Is characterized in that the posture of the load pushing / pulling implements (13a, 13b) is switched by the lateral movement of.

In implementing the above-described apparatus of the present invention,
The movement converting mechanism of the lifting / lowering drive means (17) of the load pushing / pulling tool (13a, 13b) is changed to a posture switching drive rotary shaft ( 15)
And a cam mechanism (19a, 19b) for converting the reciprocating motion of the horizontal moving body (18a, 18b) into forward and reverse rotation of the rotary shaft (15).

[0007] The fitting members (21a, 21b) of the loading / unloading and retracting driving means (17) are supported so as to be movable within a certain range in the sliding direction of the load and protruded by the spring (35). The fitting members (21a, 21b) of the loading / unloading device (17) can be urged in the limit direction, and the fitting members (21a, 21b) are constituted by rollers supported by a vertical support shaft (34). Joint material
(22) may have a U-shape in plan view, in which the rollers are fitted and rollably contact in the direction of the travel path of the transport device (1).

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. In FIG. 2, reference numeral 1 denotes a transfer device, which is driven to rotate by a motor 3 on a pair of left and right guide rails 2. A guide roller 6 is provided movably supported via the drive wheel 4 and the idler wheel 5 and sandwiches the guide rail 2 on one side. Reference numeral 7 denotes a load supporting portion provided on the transport device 1, and a pair of roller rails 8 arranged side by side in the traveling path direction of the transport device 1,
And a side guide 9 which is provided in parallel with the pair of roller guides 8, and slidably supports the load supported by the pair of roller rails 8 between the pair of side guides 9 in a direction orthogonal to the traveling path direction of the transport device 1. It is.

Reference numeral 10 denotes a reciprocating movable body, which is capable of reciprocating between a pair of roller rails 8 in the load supporting portion 7 in a sliding and transferring direction of the load (a direction orthogonal to a traveling path direction of the transport device 1). It is provided at a position slightly lower than the load support level (the load support level of the roller rail 8) in the load support portion 7 so as not to come into contact with the load. As shown in FIG. 3, the movable body 10 is an intermediate movable slide guide supported on a fixed slide guide 11 fixedly mounted on the transport device 1 so as to be able to move in and out of the fixed slide guide 11. The intermediate movable slide guide 12 is moved forward and backward with respect to the intermediate movable slide guide 12 by moving the intermediate movable slide guide 12 forward and backward with respect to the fixed slide guide 11. Thus, the transfer device 1 can move from the load supporting portion 7 of the transfer device 1 to the limit position projecting completely laterally. As the driving means for the intermediate movable slide guide 12 and the moving means for moving the moving body 10, the driving means for the conventional loading fork running fork can be used as it is, and the illustration and description thereof are omitted.

As shown in FIG. 2, the retractable moving body 10 is provided with a pair of load pushing / pulling tools 13a, 13b in the retracting direction at a position near one side. As shown in FIGS. 1A and 1B, the load pushing / pulling devices 13a and 13b
4 attaches to the rotating shaft 15 supported on the back side of the moving body 10 in parallel with the moving direction of the moving body 10, and by the forward and reverse rotation of the rotating shaft 15, the imaginary lines in FIG. 1B and FIG. As shown, the upwardly protruding posture S1 engaging with the bottom of the load
And the evacuation posture S2 that separates from the load as shown by the solid line in each drawing of FIG. The moving body 10 is provided with a through hole 16 through which the load pushing / pulling tools 13a and 13b that switch from the evacuation posture S2 to the upward protruding posture S1 move.

Reference numeral 17 denotes a retracting drive means for the load pushing / pulling tools 13a, 13b, which is positioned adjacent to both ends of the rotating shaft 15 for driving the attitude switching of the load pushing / pulling tools 13a, 13b. The horizontal moving members 18a and 18b supported on the back side of the movable member 10 so as to be able to reciprocate in the direction of the travel path of the transport device 1 and the reciprocating motion of the horizontal members 18a and 18b are determined by the reciprocal movement of the posture switching rotary shaft 15 in the opposite direction. Cam mechanisms 19a and 19b for converting rotation, and load pushing and pulling devices 13a and 13b
The horizontal moving bodies 18a, 1 are located at positions corresponding to the respective postures S1, S2.
8b, and a positioning mechanism 20 for positioning the
a, 21b, which protrude from the moving member 10 in the direction in which the moving body 10 advances, and the fitting members 21a, 21b.
21b.

As shown in FIG. 2, shelves 23A and 23B are erected on the left and right sides of the traveling route of the transport device 1, and a load support table 24 is provided for each load storage section of the shelf. Each load support 24 is connected to a pair of load rails 25 at the same level as a pair of roller rails 8 of the load support 7 of the transport device 1 stopped at a position adjacent to the load support 24.
And a side guide 26 attached to each load support rail 25.
The load supported by the pair of load support rails 25 is slidably supported between the pair of side guides 26 in a direction orthogonal to the traveling path direction of the transport device 1.

The above-described load pushing / pulling tools 13a, 13b
The fitted member 22 of the retracting drive means 17 is provided for each of the load supporting tables 24 on the shelves 23A and 23B. As shown in FIG. When the vehicle has advanced to the advance limit position, the fitting member 21a (or 2
1b) is attached to the innermost end of the load support rail 25 on one side via a bracket 27 so that 1b) is fitted.

The laterally moving members 18a and 18b of the retracting drive means 17 of the load pushing and pulling devices 13a and 13b extend through a slide guide unit 28 and a bracket 29 attached to the retractable moving member 10 as shown in FIG. It is supported by the retreating moving body 10. The cam mechanisms 19a and 19b include an arm 30 attached to an end of the rotating shaft 15, a roller 31 pivotally supported at the tip of the arm 30, and a
a, 18b, and the cam grooves 32 are provided in the vertical direction. When the rollers 31 are fitted into the cam grooves 32, the rollers 31 are moved in accordance with the lateral movement of the traversing members 18a, 18b.
The arm 30 is rotated while moving up and down in the cam groove 32, and the rotation of the arm 30 is transmitted to the rotating shaft 15.

A fitting member 21a, 21b provided on each of the laterally moving members 18a, 18b is vertically supported by a tip of a rod 33 supported by each of the laterally moving members 18a, 18b so as to be movable in a load sliding direction within a certain range. The rod 33 is supported by a shaft 34, and the rod 33 is urged by a spring 35 in a protruding limit direction. The fitting member 22 provided on the load support table 24 side of the shelves 23A and 23B has a U-shaped plane shape in which the fitting members 21a and 21b formed of rollers can be fitted. , Fitting members 21a, 2
It is desirable to form the roller 1b (roller) into an outwardly expanding shape that guides the roller 1b inside.

[0016] Positioning mechanism 20 for the horizontal moving bodies 18a and 18b
As shown in FIG. 1A, two engaging recesses 36 formed on one lateral moving body 18a at a predetermined interval in the lateral movement direction are provided.
A rod 37 supported by the moving body 10 so as to be movable within a certain range in parallel with the moving direction of the moving body 10;
7, a roller 38 which is pivotally supported at the tip of the engaging member 7 and selectively fits into the two engaging concave portions 36;
And a spring 39 for urging the rod 37 in a direction in which the rod 37 is fitted. Reference numerals 40a and 40b denote stoppers for regulating the range of lateral movement of each of the laterally moving bodies 18a and 18b.

Hereinafter, a method of using the transfer device will be described. As shown in FIG. 6, a load W to be handled is provided at its bottom with an engaged portion (a pair of load pushing / pulling tools 13a and 13b). Concave portions) 41a and 41b are provided. Then
As shown in FIG. 2, a method of transferring a load W supported by one load support 24 on the shelf 23A to the transport apparatus 1 will be described as an example.
Is empty, and a pair of load pushing / pulling tools 13 of the reciprocating mobile unit 10 waiting at the central home position of the load supporting unit 7.
a and 13b are in the retracted posture S2 as shown in FIG. Therefore, each of the horizontal moving bodies 18a and 18b
0, the roller 38 of the positioning mechanism 20 and the inner engaging recess 3
6 is held at the position.

The transport device 1 in such a state is caused to travel along the guide rail 2 and is stopped at a first position adjacent to the load support 24 to be unloaded. At this time, the transport device 1
As shown in A, the load supporting portion 7 is slightly offset from the load supporting table 24 to be unloaded in the retreating direction of the horizontal moving members 18a and 18b. Next, as shown in FIG. 3A, when the reciprocating movable body 10 is advanced toward the load support base 24 to the advance limit position, the fitting member (roller) 21a on the reciprocating movable body 10 is ejected as shown in FIG. It is fitted to the fitted member 22 at the back end of the target load support 24. At this time, the fitting member 21a
1A is slightly retracted with the rod 33 against the urging force of the spring 35 shown in FIG. Note that the retreating moving body 10 that moves into and out of the load support 24 moves at a level slightly lower than the bottom surface of the load W supported by the load support 24 and does not contact the bottom surface of the load W. .

In this state, as shown in FIG. 3B, the transport apparatus 1 is moved to the load support table 24 to be unloaded from the load support section 7.
Are moved in the forward movement direction side of the laterally moving bodies 18a and 18b by a slight distance to the second position where they are completely connected. At this time, since the fitting member 21a of the horizontal moving body 18a is fitted to the fitted member 22 on the load support base 24 side, the horizontal movement of the horizontal moving body 18a with respect to the retractable moving body 10 is prevented. ,
The retractable moving body 10 is integrated with the transport device 1 and is
By moving the moving body 8b in the forward moving direction, the laterally moving body 18a is forcibly moved in the backward moving direction with respect to the moving out and moving body 10. At this time, the roller 38 of the positioning mechanism 20 is
Is disengaged from the engaging concave portion 36 on the side of the laterally moving body 18a against the biasing force of.

When the transporting device 1 moves to the second position, the horizontal moving body 18a reaches a horizontal movement limit position on the retreating movement side, and at that position, the roller 38 of the positioning mechanism 20 rotates the spring 39.
With the urging force described above, the laterally moving body 18a is positioned by fitting into the engaging concave portion 36 on the outside of the laterally moving body 18a, but the lateral movement of the laterally moving body 18a causes rotation of the load pushing / pulling tool posture switching via the cam mechanism 19a. The shaft 15 rotates by a predetermined angle, and as shown by phantom lines in FIG. 1B and FIG.
3a and 13b are switched from the evacuation posture S2 to the upward protruding posture S1 and protrude upward from the egress and retraction moving body 10, and FIG.
As shown in FIG. 6 and D, it is engaged with the engaged portions 41a and 41b provided on the bottom surface of the load W.

In this state, as shown in FIG.
0 is moved backward to the center home position of the load support section 7 on the transport device 1 side, so that the load support table 2 on the shelf 23 side.
4 is supported by a pair of load pushing / pulling tools 13.
The load is pulled out by a and 13b, and is slid and transferred from the load support rail 25 of the load support base 24 to the roller rail 8 of the load support section 7 on the transport device 1 side. Note that the rotating shaft 15 rotates as described above to rotate the pair of load pushing / pulling tools 13a, 13a.
b, when the posture is switched, the load pushing / pulling tool 13b
The lateral moving body 18b on the opposite side via the cam mechanism 19b on the side also
The lateral movement is performed in the same direction as the laterally moving body 18a which is forcibly moved laterally by the action of the fitting member 21a and the fitted member 22.

The load W transferred to and from the load support section 7 of the transport device 1 can be transported to a destination by traveling of the transport device 1 and can be unloaded. Also, as described above, the loading / pulling tools 13a, 13a
b is the upwardly projecting posture S1 and the engaged portions 41a, 41 of the load W
Since the load W is engaged with the load b, there is no possibility that the load W slides on the load supporting portion 7 unexpectedly and drops from the transport device 1.

The loading and unloading operation of the load W from the load support table 24 on the shelf 23 side to the load support section 7 on the transport device 1 is performed by the shelf 23.
A, 23B can also be used when the load W to be stored in the transfer position is transferred onto the load supporting portion 7 of the transport device 1 at the home position. When the load W supported on the load supporting portion 7 of the transport device 1 is transferred to the load supporting table 24 on the shelves 23A and 23B, the second position (load supporting table) with respect to the load supporting table 24 to be stored. 24 at a position where the transfer device 1 is completely connected to the load support portion 7 of the transfer device 1).
Is moved forward, and the load pushing / pulling tools 13a, 13 engaged with the engaged portions 41a, 41b of the load W in the upwardly protruding posture S1.
In 3b, the load W on the load support unit 7 is slid and transferred onto the load support table 24 to be stored. Next, the transport device 1 is allowed to travel by a certain distance to the first position, and the laterally moving members 18a, 18b are fitted using the fitting members 21a or 21b fitted to the fitted member 22.
b is moved laterally from the retreat limit position to the forward limit position, and the load pushing / pulling tools 13a, 13b are switched from the upward protruding posture S1 to the retreat posture S2. Thereafter, the shelves 23A, 2 are moved back and forth to the home position.
The loading transfer of the load W to the 3B-side load support 24 is completed.

Note that, as shown in FIG.
One load pushing / pulling tool 13 may be arranged at the center position in the moving direction of the vehicle. Of course, in this case, one engaged portion 41 is provided on the bottom surface side of the load W at the center position in the sliding transfer direction. When the engaged portion is not provided on the bottom surface of the load W, or when handling the load W having no engaged portion, as shown in FIG. The load pushing / pulling tools 13a and 13b may be arranged at both ends in the direction of the sliding direction so as to sandwich both ends in the sliding transfer direction of the load W.

[0025]

As described above, in the transfer device according to the present invention, the load supporting portion (7) on the side of the transport device (1) and the shelves provided on the side of the traveling route of the transport device (1) are used. When a load is transferred to and from the load support table (24), the moving unit (10) on the side of the transport device (1) is moved in and out, and the transfer unit (10) is provided on the moving unit (10). It is necessary to switch the position of the load pushing / pulling tool (13a, 13b) between the upwardly protruding posture (S1) and the evacuation posture (S2). The driving means (17) does not have a power source such as a motor, a solenoid or a cylinder, and the mating member (22) on the load support (24) side
And the fitting member (21a, 21b) on the side of the laterally moving body (18a, 18b) provided on the moving out and moving body (10) are fitted to each other by the moving out of the moving out and moving body (10). The traveling device (18a, 18b) is traversed by a predetermined amount by traveling a short distance of the transfer device, and the lateral motion of the traversing device is converted into a posture switching movement of the load pushing and pulling device (13a, 13b), Since the posture of the load / pull tool (13a, 13b) is switched, the power source for traveling of the transporting device (1) can be used as a power source for driving the load / pull tool into and out. Compared with the conventional device which requires a dedicated power source for driving the pulling tool in and out, the cost can be significantly reduced and the whole apparatus can be reduced in size and weight.

In particular, according to the configuration of the second aspect, the lateral movement of the horizontal moving body (18a, 18b) is surely converted into the posture switching movement of the load / pull tool (13a, 13b) by a simple mechanism. Thus, the posture of the load pushing / pulling tool (13a, 13b) can be reliably switched. In particular, even when a pair of pushing / pulling tools (13a, 13b) are provided, the pushing / pulling tools (13a, 13b) can be easily supported by a single rotating shaft to perform the posture switching movement. .

According to the third aspect of the present invention, the transport device (1) has a small amount of play in the left and right lateral directions with respect to the traveling path direction, and the transport device (1) and the load support stand when stopped. (twenty four)
Even if there is some variation in the distance between them and the amount of advance of the moving body (10), the fitting members (21a, 21b) should be Thus, the push-pull device (13a, 13b) can be surely fitted to the fitted member (22), and the posture switching drive of the load pushing / pulling tool (13a, 13b) by the traveling of the transport device (1) can be performed reliably.

Further, according to the structure of the third aspect,
The fitting member (21
a, 21b) and the mating member (22) on the load support base (24) side, even if the play in the traveling path of the transport device (1) is reduced, It can be done easily.

[Brief description of the drawings]

1A is a partially cutaway plan view showing a main part of an embodiment of the present invention, FIG. 1B is a front view showing a support portion of a load / pull tool, and FIG. FIG.
The figure is a longitudinal side view showing an interlocking mechanism between the horizontal moving body and the load pushing / pulling tool.

FIG. 2 is a partially cutaway plan view showing a state immediately before carrying out transfer.

FIG. 3A is a partially cutaway schematic plan view showing a first stage of unloading transfer, and FIG. 3B is a partially cutout schematic plan view showing a second stage.

FIG. 4 is a partially cutaway plan view showing a final stage of delivery and transfer.

FIG. 5 is a front view showing the structure of the shelf on the load support side.

FIG. 6 is a schematic side view showing a load and a moving body at the time of loading and unloading transfer.

FIG. 7 is a schematic side view showing a modification of the load pushing / pulling tool.

FIG. 8 is a schematic side view showing still another modification of the load pushing / pulling tool.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Conveying device 7 Load support part 8 Roller rail 9 Side guide 10 Retractable moving body 13a Load pushing / pulling tool 13b Load pushing / pulling tool 15 Rotation axis for driving the attitude of load pushing / pulling tool 17 Loading / pulling out drive means 18a Horizontal moving body 18b Horizontal moving body 19a Cam mechanism 19b Cam mechanism 20 Horizontal moving body positioning mechanism 21a Fitting member 21b Fitting member 22 Fitted member 23A Shelf 23B Shelf 24 Shelf-side load support 25 Load support rail 26 Side guide 30 Arm 31 Roller 32 Cam groove 33 Rod 35 Spring 36 Two engaging recesses 37 Rod 39 Spring W Load 41a Engagement part of bottom 41b Engagement of bottom

Claims (4)

(57) [Claims] A load is transferred between a load support section (7) on a side of a transport device (1) and a load support table (24) on a shelf or the like provided beside a traveling route of the transport device (1). A loading / unloading moving body (10), a loading / pulling device (13a, 13b), and a loading / pulling device.
(13a, 13b) driving means (17), and the load support section (7) and the load support table (24) slide the load in a direction orthogonal to the traveling path direction of the transfer device (1). The moving body (10) is provided in the transport device (1),
The loading / pulling device (13a, 13b) is provided on the loading / unloading body (10), and is capable of engaging with the bottom of the load. ) And the evacuation posture (S2) for removing from the load, and the loading / unloading driving means (17) of the load pushing / pulling tools (13a, 13b) can reciprocate in the direction of the travel path of the transport device (1). Moving in and out (10)
(18a, 18b) and the horizontal (18a, 18b)
b) The motion conversion mechanism (15, 19a, 19b) that converts the reciprocating movement of the b) into the posture switching movement of the load / pull tool (13a, 13b) and the posture of the load / pull tool (13a, 13b) Lateral body in position
(18a, 18b) positioning mechanism (20)
(18a, 18b), the fitting members (21a, 21b) protruding in the direction of advance of the moving mobile unit (10), and the moving mobile unit (10) on the load support base (24) side advance. The fitting member when advanced to the
(21a, 21b) and the to-be-fitted member (22) to be fitted, and traveling of the transport device (1) in a state where the to-be-fitted member (21a, 21b) is fitted to the to-be-fitted member (22). As a result, the laterally moving body (18a, 18b) laterally moves with respect to the retractable moving body (10), and the lateral movement of the laterally moving body (18a, 18b) switches the position of the load pushing / pulling tool (13a, 13b). Transfer equipment. 2. A retracting drive means (1) of a load pushing / pulling tool (13a, 13b).
The motion conversion mechanism in (7) is a reciprocating motion of the rotation shaft (15) for driving the attitude of the load pushing / pulling device supported by the retraction / moving body parallel to the load sliding / transferring direction, and the horizontal moving body (18a, 18b). 2. The transfer device according to claim 1, wherein the transfer mechanism is a cam mechanism (19 a, 19 b) that converts the rotation into forward and reverse rotations of the rotation shaft (15). 3. A fitting member (21a, 21b) of a loading / pulling-out retracting drive means (17) is supported movably in a load sliding transfer direction within a certain range, and is protruded by a spring (35). The transfer device according to claim 1, wherein the transfer device is biased in a limit direction. 4. A fitting member (21a, 21b) in a loading / pulling-out retracting drive means (17) is composed of a roller supported by a vertical support shaft (34), and the fitted member (22) is The transfer device according to any one of claims 1 to 3, wherein a planar shape into which the roller can fit is a U-shape.