JPH09100023A - Direction reversing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To place a free flow conveyor at low equipment cost with excellent workability by arranging a slide moving member on an upper surface of a placing stand, a support part to rotatably support the placing stand, a vertically moving means to which the support part is fixed and vertically positioning stoppers of the placing stand. SOLUTION: When a platen 15 is sent back by sliding down up to a forward direction reversing device 20 by a sending-back conveyor 62 of a carrying device 60, it transfers to a platen placing stand 21 journalled to a holding arm, and a sliding unit 25 rises, and a tip part of the platen placing stand 21 comes into contact with a locking stopper 30 arranged in a front upper part of the forward direction reversing device 20. When the sliding unit 25 rises further, the platen placing stand 21 rotates with a rotary fulcrum 23 arranged under the platen placing stand 21 as a fulcrum, and a downward gradient is arranged over the tip part from a rear end part of the placing stand 21, and the plate 15 slides down, and transfers to a carrying surface of a carrying conveyor 61.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a direction reversing device for reversing the traveling direction of an article, for example, a direction reversing device for circulating a platen used in a free flow conveyor device or the like.

[0002]

2. Description of the Related Art A conventional free flow conveyor device is shown in FIG.
This will be described with reference to FIG. FIG. 6 is an internal side view showing the configuration of a conventional free flow conveyor device. Reference numeral 100 denotes a free flow conveyor device, which is a unitary transport device that connects the forward reversing device 70 installed at the head, the backward reversing device 90 installed at the end, and the forward reversing device 70 and the backward reversing device 90. It is composed of 80. The total length of the free-flow conveyor device 100 can be adjusted (unit) by the number of units of the transfer device 80 to be installed. In the free flow conveyor device 100,
Platen (conveying workbench equipped with parts holding jig, etc.)
The platen 99 can be conveyed at a desired position, and the platen 99 can be stopped at a desired position to process the parts.

Forward reversing device 70 and rear reversing device 90
Are front-rear objects (opposite hands) and have substantially the same configuration, so the description will be made on the front-direction reversing device 70 and the description on the rear-direction reversing device 90 will be omitted. The forward reversing device 70 includes a conveyor 71, a holder 72, a slide unit (air cylinder) 74, and switches (not shown) for detecting the vertical stop position of the conveyor 71 and the position of the platen 99.

The conveyor 71 is designed so that the direction of rotation is switched between normal and reverse. When the conveyor 71 is at the bottom, it rotates in the direction of arrow p, and when the conveyor 71 is at the top, it rotates in the direction of arrow q. Then, by rotating the conveyor 71, the platen 99 is loaded into the forward reversing device 70 or is unloaded from the front reversing device 70 to the transport device 80. Holder 7
2 is fixed to a slide unit 74 guided by a guide shaft so that the conveyor 71 is held horizontally and smoothly moved in the vertical direction, and the vertical movement is performed by the slide unit 74. For the guide portion of the slide unit 74, a combination of a shaft and a slide bearing which are hardened and polished so as to move smoothly is used.

The conveyer 80 is provided with upper and lower conveyors, the upper conveyer 81 conveys a platen 99 on which processed parts are mounted in the direction of arrow r, and the lower return conveyer 82 is an empty platen 99. Is returned in the direction of arrow s. In addition, a stopper (not shown) for a processing station for stopping the platen 99 to perform processing and the like is provided on the upper conveyor 81 as necessary. The transport device 80 is unitized with a drive device for both the transport conveyor 81 and the return conveyor 82.

Next, the operation will be described. When the empty platen 99 is returned in the arrow t direction by the return conveyor 82 of the transport device 80, the conveyor 71 located below the forward direction reversing device 70 rotates in the arrow p direction, and the empty platen 99 is returned.
Is carried into the forward reversing device 70. When the platen 99 is completely transferred to the conveyor 71, the rotation of the conveyor 71 is stopped by the detection switch. Next, when the slide unit 74 operates and the conveyor 71 rises to reach the upper fulcrum, the slide unit 74 stops, and the conveyor 71 moves to the arrow q.
Rotate in the direction. Then, the platen 99 is transferred to the transport device 80.
To the transport conveyor 81.

Next, the platen 99 on the transfer conveyor 81
Is stopped at the processing station as required, and after the processing is completed, it is conveyed to the next station. Then, when all the processing on the conveyor 81 is completed and the end of the conveyor 80 is reached, the conveyor 91 waiting on the upper part of the backward reversing device 90 rotates in the direction of arrow u, and the empty platen 99 is removed. The paper is carried into the backward turning device 90. When the platen 99 is completely transferred to the conveyor 91, the rotation of the conveyor 91 is stopped by the detection switch.

Next, when the slide unit 94 is operated and the conveyor 91 moves up and reaches the lower fulcrum, the slide unit 9
4 stops, and the conveyor 91 rotates in the v direction. Then, the platen 99 is unloaded onto the transport conveyor 81 of the transport device 80.

[0009]

However, in the above-described free-flow conveyor device 100, the transport device 80 in which the electric conveyors are installed in the upper and lower two stages, the leading forward reversing device 70 in which the electric conveyors are installed, and the end portion. Since the rear-direction reversing device 90 is combined, the facility cost of the free flow conveyor device 100 as a whole is high.

Therefore, the present invention solves the above-mentioned problems, and an object of the present invention is to provide a direction reversing device useful for realizing a free-flow conveyor device or the like which is low in equipment cost and good in workability. .

[0011]

Means for Solving the Problems The present invention achieves the above-mentioned object, and has a platform that moves in the vertical direction, and moves an article carried into the platform to an upper part or a lower part, In a direction reversing device for reversing the direction of the article in the direction opposite to the carrying-in direction, a sliding member provided on the upper surface of the table, and a support portion having a rotation fulcrum for rotatably supporting the table. A vertical movement means for fixing the support portion to move in the vertical direction, and a positioning stopper for restricting the vertical stop position of the mounting table by contact with the front portion of the mounting table. .

Further, it is characterized in that the rotation fulcrum position of the above-mentioned table is provided eccentrically from the center of gravity of the table. In addition, the front end of the table, which rotates around the seesaw with the rotation fulcrum as a fulcrum, is elastically held by the elastic holding means by providing an upward slant, and the article carried in the table is moved in the direction opposite to the carrying-in direction. In a direction reversing device for reversing the direction, a sliding member provided on the upper surface of the table described above, and the rear member provided so as to hold the inclination of the table described above until the transfer of the article to the table described above is completed. Stop stopper, the front locking stopper provided so as to hold the inclination of the preceding table until the article is completely carried out from the preceding table, and the tension for urging the rear locking stopper in the locking direction. It is characterized in that it is composed of a spring and a tension spring that urges in a direction to release the locking of the front locking stopper.

Further, the elastic holding means is characterized in that a front portion of the above-mentioned stand is suspended by using a balancer for suspending an article having a constant weight at a predetermined position. Also,
A spring member is used for the elastic holding means to support the front part of the table from below.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention is shown in FIGS. 1, 2, 3 and 4.
And FIG. 5 will be described. 1A and 1B are views showing the configuration of a free-flow conveyor device according to an embodiment of the present invention. FIG. 1A is a plan view and FIG. 1B is an internal side view. FIG. 2 shows the first aspect of the present invention.
It is a figure which shows the forward reversing device of an Example, (a) is a top view,
(B) is an internal side view showing the lower position of the mounting table.

FIG. 3 is a view showing a forward direction reversing device according to one embodiment of the present invention. FIG. 3 (c) is an internal side view showing the position of the top of the mounting table.
(D) is an internal side view showing the platen unloading state. FIG. 4 is a view showing a backward inverting device according to an embodiment of the present invention.
(A) is a plan view, (b) is an inner side view showing the upper position of the mounting table, and (c) is an inner side view showing the loading state of the platen.

FIG. 5 is a view showing a rearward reversing device according to an embodiment of the present invention. FIG. 5 (d) is an internal side view showing the lower position of the mounting table.
(E) is an internal side view showing a platen unloading state. 1
Reference numeral 0 is a free-flow conveyor device, which is composed of a front-side reversing device 20 at the head, a rear-side reversing device 40 installed at the end portion, and a unitized conveying device 60 connecting the front-side reversing device 20 and the rear-direction reversing device 40 Has been done. The total length of the free flow conveyor device 10 can be adjusted (unit) by the number of units of the transfer device 60 to be installed. In the free-flow conveyor device 10, a platen (conveyance type work table on which a component holding jig or the like is mounted) 1
5 is manually transferred to the platen 15 at a desired position.
Can be stopped and processing of the mounted parts can be performed.

The forward reversing device 20 is a device for returning the platen 15 returned by the return conveyor 62 of the transfer device 60 onto the transfer conveyor 61 of the transfer device 60 again. The platen table 21, the holding arm 22, the slide unit ( The air cylinder) 25, the front upper stopper 30, the front lower stopper 31, and the like. Platen stand 2
1 is the platen 1 returned by the return conveyor 62
5 is a plate-shaped mount on which the roller 32 is used on the upper surface so that the platen 15 is slippery. Platen stand 21
A bearing 27 for a rotation fulcrum 23 for rotating the seesaw of the platen table 21 is provided on the back surface of the. The rotation fulcrum 23 is provided in front of the center of the platen mounting table 21 in the front-rear direction, and since the weight of the platen mounting table 21 is behind the rotation fulcrum 23, the platen mounting table 21 is in a natural state. The rear end 29 descends downward, and the platen mounting table 21 has a downward slope from the front end 28 to the rear end 29.

The holding arm 22 is an arm for holding the platen mounting table 21. The holding arm 22 pivotally supports bearings 27 for the rotation fulcrums 23 of the platen mounting table 21 from both sides of the platen mounting table 21. It is screwed and fixed to the slide portion of the slide unit 25. And the platen mounting table 2
The entire holding arm 22 holding 1 is the slide unit 2
Move up and down by 5. Further, the platen mounts 21 are provided near the upper and lower central portions on both sides of the holding arm 22.
An upper stopper 26 and a lower receiving stopper 24 are installed.

The backward reversing device 40 is a reversing device for returning the platen 15 conveyed by the conveyer conveyor 61 of the conveyer device 60 to the head of the free flow conveyer device 10. The platen mount 41, the holding column 46 and the balancer. 47, a front lock lever 48, a rear lock lever 49, a front return spring 50, a rear return spring 51, and the like.

The platen mounting table 41 is a plate-shaped mounting table on which the platen 15 transferred by the transfer conveyor 61 is placed, and the rollers 32 are used on the upper surface of the platen mounting table 41 so that the platen 15 is slippery. The platen mounting table 4 is provided on the back surface of the platen mounting table 41.
A bearing 43 for a rotation fulcrum 42 for rotating the seesaw.
Is provided. The rotation fulcrum 42 is the platen mounting table 4
1 is provided behind the center of the front-back direction, and the weight of the platen mounting table 41 is in front of the rotation fulcrum 42.
In a natural state, the front end 44 of the platen mounting table 41 descends downward, and a downward slope is formed from the rear end 45 of the platen mounting table 41 to the tip 44.

The holding column 46 is an arm for holding the platen mounting table 41, and the bearings 43 for the rotation fulcrums 42 of the platen mounting table 41 are pivotally supported by the shaft 52 from both sides of the platen mounting table 41. The position (height) of the shaft 52 is the same as that of the conveyor 61.
Is provided at a position lower than the upper surface of. Balancer 47
Is to keep the platen platform 41 elastically suspended,
The suspension force of the balancer 47 is adjusted so that the front end portion 44 of the platen mounting table 41 is always at the same height as the upper surface of the conveyor 61 when the platen mounting table 41 is empty.

The front lock lever 48 has a fishhook shape, and the front end 44 of the platen mounting table 41 is provided with a locking shaft 5 at the tip thereof.
An engaging portion 54 that engages with 3 is formed. Further, there is a rotation fulcrum 55 in the middle of the front lock lever 48, and a contact portion 68 is formed on the opposite side of the rotation fulcrum 55 from the locking portion 54. The contact portion 68 is the front end portion 4 of the platen mounting table 41.
4 is installed at the front end portion of the backward inverting device 40 so as to project from the upper surface of the platen mounting table 41 when the front end portion 4 of the return conveyor 62 is substantially level with the starting end portion 64 of the return conveyor 62.

The rear lock lever 49 has a fishing hook shape, and a locking portion 57 for locking a locking shaft 56 provided below the rear end portion 45 of the platen mounting table 41 is formed at the tip thereof. . Further, in the middle of the rear side lock lever 48, the rotation fulcrum 5
8 and a contact portion 65 is formed on the opposite side of the rotation fulcrum 58 from the locking portion 57. The rear lock lever 48 is provided on the rear end portion 45 of the platen mounting table 41, and the contact portion 6 is provided.
5 projects above the upper surface of the platen mounting table 41. When the platen 15 slides down the platen mount 41 and the rear end of the platen 15 contacts the contact part 65, the rear lock lever 48
Is rotated in the direction of arrow f, the locking portion 57 is disengaged from the locking shaft 56, and the locked state is released.

The front side return spring 50 is a tension spring, and the locking portion 54 of the front side lock lever 48 has the front end portion 4 of the platen mounting table 41.
It is installed so as to act in the direction in which the locked state is released from the locking shaft 53 of No. 4. The rear side return spring 51 is a tension spring, and the rear side lock lever 49 attached to the platen mounting table 41.
The locking portion 57 is installed so as to act on the locking shaft 56 provided below the rear end portion of the platen mounting table 41 in a locking state.

The conveyor 60 is provided with upper and lower conveyors, the upper conveyor 61 conveys the platen 15 on which the processed parts are mounted in the direction of arrow g, and the lower return conveyor 62 conveys the platen 15 with arrow. Returned in the h direction. The roller conveyor 32 is used for the upper conveyor 61, and the platen 15 is moved on the roller controller 32 by a manual movement method. The platen 15 on which the processed parts and the like are mounted is stopped at a predetermined place to perform processing or the like. Perform and move to subsequent steps.

The return conveyor 62 on the lower side also has a roller control 32.
Is used, from the start end 64 to the end 63 of the transport device 60.
A slope is provided to the platen 15, and the platen 15 slides down in the direction of the arrow h and is returned by its own weight. The transport device 60
It is necessary to provide the return conveyer 62 so that the gradient of the return conveyer 62 when using a plurality of the above is arranged so as to be a straight downward gradient from the final end of the transport device 60 to the most distal direction. Since the frame of the carrier device 60 is made of a standard pipe material and assembled by a standard connecting member, it is possible to relatively easily adjust a desired dimension (length, width, height) or the like.

Next, the operation will be described. The platen 15 is moved forward by the return conveyor 62 of the transfer device 60.
When it slides down to and is returned to, it is transferred to the platen table 21 which is pivotally supported by the holding arm which is standing by at the bottom of the forward direction reversing device 20. When the platen 15 is completely transferred to the platen mounting table 21, the slide unit 25 rises, and the tip end portion 28 of the platen mounting table 21 is located above the front surface of the forward reversing device 20 (the tip end portion 28 of the platen mounting table 21 is the transport conveyor 61).
(At a position where the height is substantially the same as that of the conveyance surface of the above). Furthermore, the slide unit 25
When is raised, the platen mounting table 21 rotates about a rotation fulcrum 23 provided on the lower portion of the platen mounting table 21, and the rear end 29 of the platen mounting table 21 is higher than the tip end 28 of the platen mounting table 21. Therefore, a downward slope is provided from the rear end portion 29 to the front end portion 28 of the platen mounting table 21.
Slides down to the transport surface of the transport conveyor 61.

When the platen 15 is completely transferred to the conveyer 61, the slide unit 25 starts descending and the platen mounting table 21 rotates about a rotation fulcrum 23 as a fulcrum, and the rear end 29 of the platen mounting table 21 moves to the platen. It is lower than the tip 28 of the mounting table 21. In this state, the slide unit 25 descends so that the tip end portion 28 of the platen mounting table 21 is at the lower front surface of the front-reversing device 20 (the tip end portion 28 of the platen mounting table 21 is at substantially the same height as the end conveyance surface of the return conveyor 62). Position)
It comes into contact with the locking stopper 31 provided on the. In this state, a downward slope is provided from the front end 28 to the rear end 29 of the platen platform 21. Then, the next platen 15 slides down and is carried in, and the above operation is repeated.

On the other hand, the platen 15 carried into the conveyer conveyor 61 is loaded with processed parts and the like, processed at a predetermined position and sequentially moved to subsequent steps, and when the processing is completed, the platen 15 is conveyed to the conveyer conveyor. It is conveyed to the terminal portion 66 of 61. When the conveyed platen 15 is carried into the platen mounting table 41 of the backward inverting device 40, the slope of the platen mounting table 41 slides down. And the platen mounting table 4
When the front end of the platen 15 comes into contact with the contact portion 65 of the rear lock lever 49 provided at the terminal end portion 44 of the No. 1, the rear lock lever 49 rotates in the arrow f direction around the rotation fulcrum 58. Then, the locking portion 57 of the rear lock lever 49 is disengaged from the locking shaft 56.

When the rear side lock lever 49 is released from the locked state, the suspension force of the balancer 47 that elastically suspends the platen mounting table 41 loses the weight of the platen mounting table 41 on which the platen 15 is mounted. The platen mounting table 41 rotates in the direction of arrow i with the rotation fulcrum 42 as a fulcrum. Then, the front end portion 44 of the platen mounting table 41 is inclined forward and the return conveyor 62
The platen 15 slides down on the platen mounting table 41 at substantially the same height as the starting end portion 64 of the platen 15.

When the front end of the platen 15 comes into contact with the abutting portion 68 of the front lock lever 48 when the platen 15 slides down the platen mounting table 41, the front lock lever 48 uses the rotation fulcrum 55 as a fulcrum and is indicated by the arrow j. The locking portion 54 of the front lock lever 48 is locked to the locking shaft 53 of the front end portion 44 of the platen mounting table 41 by rotating in the direction. Then, the locking state is maintained until the platen 15 moves to the return conveyor 62, and when the platen 15 completely moves to the return conveyor 62,
The front side lock lever 48 held by the back side of the platen 15 is pulled by the front side return spring 50 to return to the original position, and the locked state of the front side lock lever 48 is released. When the locked state is released, the balancer 47 lifts the platen platform 41 to its original position. At the same time, the locking portion 57 of the rear lock lever 49 of the platen mounting table 41 is
The platen table 41 is held by being locked to the locking shaft 56 in an inclined state.

As described above, according to the free-flow conveyor device 10 of this embodiment, the platen 15 is moved by using the inclination and the elastic force without using the power of the motor or the like. Moreover, since the mechanism is simple, the equipment cost is low and there is almost no failure, so maintenance is easy. Further, it can be manufactured relatively easily according to the dimensions such as the installation area. Although the balancer 47 is used as the holding member that elastically holds the mounting table 41 of this embodiment, a rubber cord, a tension spring, or the like may be used instead. Further, the front end portion of the mounting table 41 can be elastically supported from below by a leaf spring, a coil spring, or the like.

[0033]

As described above, according to the present invention,
The articles are carried in and out of the direction reversing device by utilizing the inclination, elastic force, and the like. Since the mechanism is simple, the facility cost is low, and there is almost no failure, so maintenance is easy.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a free-flow conveyor device according to an embodiment of the present invention, in which (a) is a plan view and (b) is an internal side view.

2A and 2B are views showing a forward reversing device according to an embodiment of the present invention, FIG. 2A is a plan view, and FIG. 2B is an internal side view showing a lower position of a mounting table.

3A and 3B are views showing a forward-direction reversing device according to an embodiment of the present invention, FIG. 3C is an internal side view showing an upper position of a mounting table, and FIG. 3D is an internal side view showing a platen unloading state.

4A and 4B are views showing a backward inverting device according to an embodiment of the present invention, wherein FIG. 4A is a plan view, FIG. 4B is an internal side view showing an upper position of a mounting table, and FIG. It is an internal side view.

5A and 5B are views showing a rearward reversing device according to one embodiment of the present invention, FIG. 5D is an internal side view showing a lower position of a mounting table, and FIG. 5E is an internal side view showing a platen unloading state.

FIG. 6 is an internal side view showing the configuration of a conventional free flow conveyor device.

[Explanation of symbols]

 10 ... Free-flow conveyor device 15 ... Platen 20 ... Forward reversing device 21, 41 ... Platen platform 22 ... Holding arm 23, 42, 55, 58 ..Rotation fulcrum 25..Slide unit 40..Rearward reversing device 47..Balancer 48..Front lock lever 49..Rear lock lever 50 ..・ ・ ・ Front side return spring 51 ・ ・ ・ ・ ・ Rear side return spring 53, 56 ・ ・ Locking shafts 54, 57 ・ ・ Locking portion 60 ・ ・ ・ ・ ・ Conveying device 61 ・ ・ ・ ・ ・ Conveying conveyor 62 ・.... Return conveyor

Claims (5)

[Claims] 1. A direction reversing device that has a loading table that moves in the up-down direction, moves an article carried into the loading table to an upper part or a lower part, and reverses the direction of the article in a direction opposite to the loading direction. A sliding member provided on the upper surface of the table, a support portion having a rotation fulcrum for rotatably supporting the table, and a vertical movement means for fixing the support portion to move in the vertical direction, A direction reversing device comprising a positioning stopper that abuts on a front portion of the above-mentioned table and restricts a vertical stop position of the table. 2. The direction reversing device according to claim 1, wherein the rotation fulcrum position of the table is eccentric from the center of gravity of the table. 3. A front end of a table which is rotated by a seesaw about a rotation fulcrum is elastically held by an elastic holding means with an upward slope, and an article carried into the table is moved in the carrying direction. In a direction reversing device for reversing the direction to the opposite direction, a sliding member provided on the upper surface of the above-mentioned table and provided so as to maintain the inclination of the above-mentioned table until the transfer of the article to the above-mentioned table is completed. The rear locking stopper, the front locking stopper provided so as to maintain the inclination of the front locking table until the article is completely carried out from the front locking table, and the rear locking stopper are attached in a locking direction. A direction reversing device comprising a biasing tension spring and a tension spring biasing the front locking stopper in a direction to unlock the front locking stopper. 4. The front part of the table is suspended by using a balancer for suspending an article having a constant weight at a predetermined position in the elastic holding means. Direction reversing device. 5. The direction reversing device according to claim 3, wherein a spring member is used for the elastic holding means to support the front part of the table from below.