JPH0761574A - Elevating conveying device - Google Patents

Abstract

PURPOSE:To perform elevation of an object to be conveyed at a limited space, to shorten a conveyance cycle, and to prevent breakage of the object to be conveyed. CONSTITUTION:Support rollers 1A1 and 1A2 for elevation are fixed to a chain 3R1 run around sprocket wheels 23 arranged in a vertical direction and the rollers 1A1 and 1A2 are moved around along a peripheral round track XR. A spool horizontally conveyed by an upper conveyor is received on the support rollers 1A1 and 1A2, stopped in a position situated facing the spool and through drive of the chain 3R1, the support roller 1A1 and 1A2, are moved and the spool. is lowered. When the support rollers 1A1 and 1A2, pass between the rollers of a lower conveyor, the spool is transferred to the lower conveyor. Right after the starting of lowering, drive at a comparatively high speed is executed and when the spool approaches the lower conveyor, deceleration is effected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention

[0002]

2. Description of the Related Art For example, in a welding wire production line, it is necessary to pass a spooled wire product or a semi-finished product through a large number of manufacturing processes such as an inspection process, an oil coating process and a packaging process. Yes, products or semi-finished products that have completed one process must be transported to the next process. Therefore, in general, a horizontally arranged belt conveyor is arranged between processes to carry a product or a semi-finished product.

In such equipment, the installation space of the belt conveyor occupies a considerably large space. However, it is not necessary to place it in the space above the ground because the function of the belt conveyor is only to carry it. That is, if a conveyor is installed underground and the product or the semi-finished product is transported in the underground space, the space on the ground occupied for the transportation can be reduced and the space can be effectively used.

By the way, when various processes of the manufacturing line are installed on the ground and the product is transferred between the processes by the conveyor installed in the underground, the goods are moved up and down from the ground and from the underground to the ground. The need arises. Therefore, conventionally, a conveyor is installed at an inclined position with respect to the transport direction at the portion where the transported object is moved up and down from the ground to the ground, and the transported object is transported along the slope. . In addition, in the part of the inclined conveyor that conveys from the ground to the underground, the structure is such that it is conveyed by its own weight.

[0005]

However, since the inclination of the inclined conveyor cannot be increased in order to prevent the product from falling off the conveyor, the ground space occupied by the inclined conveyor becomes considerably large. . In addition, when carrying the product by its own weight, it is difficult to adjust the carrying speed. Therefore, the front and rear conveyed objects may collide with each other, causing damage to the spool.

In order to eliminate such inconvenience, an elevating and lowering conveying device such as an elevator which reciprocates in the vertical direction is installed at a portion for elevating a product from the ground to the underground and from the underground to the ground. It is possible. However, this type of lifting / lowering transfer device cannot be used in a production line having a high transfer speed because the time required for one cycle of the lifting / lowering operation is relatively long. In addition, it is difficult to automatically transfer the transported object between the normal conveyor and the lifting / lowering transportation device.

Therefore, the present invention aims to reduce the space occupied by a device for raising and lowering a conveyed object, shorten the time required for the raising and lowering operation of the conveyed object, and prevent damage to the conveyed object during conveyance. And

[0008]

In order to solve the above-mentioned problems, the lifting / lowering conveyance device of the present invention is provided with at least two vertical movement devices.
Vertical support means (2 ₁ , 2 ₂ , 2 ₃ , 2 ₄ ), which are arranged at different positions and at least one of which is rotatably supported; Endless orbital supporting means (3R ₁ , 3R ₂ , 3L ₁ , 3L ₂ ) configured to be capable of orbiting along the orbits (XR, XL); fixed to a part of the endless orbital supporting means and supporting an object to be conveyed. At least one conveyed product holding means in which the projections (1A ₁ , 1A ₂ , 1B ₁ , 1B ₂ ) are formed so as to project in a direction substantially perpendicular to the moving direction of the endless orbiting support means. (21, 22); drive means (12) for rotationally driving at least one of the upper and lower support means; controlling the drive means to position the protrusion of the carried object holding means at a predetermined carried object carry-in position Positioning control means (LS, 43,
73, 74); guides an object to be conveyed onto the protrusions at the conveyed-in position, and a carrying-in side conveying means (9); and a predetermined conveyed-object unloading position adjacent to the movement track of the protrusions. The carrying-out side carrying means (10) for carrying out the object to be carried, which is installed and placed on the projection, from the projection.
₁ , 10 ₂ );

Further, in a preferred aspect of the present invention, a carry-in detection means (11) for detecting whether or not an object to be carried is carried onto the protrusion at the carried-in position, and an object to be carried onto the protrusion. When the carry-in detection means detects that an object has been carried in, it is provided with a transportation start control means (75, 76); which automatically starts driving of the driving means to vertically transport the transportation object.

Further, in a preferred aspect of the present invention, a transport assembly (50R, 50L) composed of the upper and lower support means, the endless circling support means, and the transport object holding means is provided to the left and right of the transport path of the transport object. Install in pairs in a symmetrical shape.

The symbols shown in the above parentheses are the reference numerals of the corresponding elements in the embodiments described later, but each component of the present invention is a specific element in the embodiments. It is not limited to only.

[0012]

In the present invention, a predetermined orbit (XR, X
Endless revolving support means configured to be freely circularly moves along _{L) (3R 1, 3R 2} , 3L 1, 3L 2) is arranged at two positions in the vertical direction the rotatable upper and lower support means (2 ₁ , 2 ₂ , 2
It is supported at each upper and lower position by ₃ , ₂₄ ). The transported object holding means (21, 22) is fixed to a part of the endless circling support means, and supports the projection object (1).
A ₁ , 1A ₂ , 1B ₁ , 1B ₂ ). At least one of the upper and lower support means is connected to a drive means (12) for rotationally driving it. Therefore, when the drive means is energized, the upper and lower support means are rotationally driven, and the endless revolving support means supported thereby revolves along the revolving orbits (XR, XL), and accordingly, the object to be held is conveyed. The protrusions of the means also move along the orbit. Since the endless orbital support means is supported at the upper and lower two places, most of the orbital track goes in the vertical direction. That is, the conveyed object holding means moves from top to bottom in a certain portion and from bottom to top in another portion. Therefore, if the object to be conveyed is placed on the protrusion at the portion where the object holding means moves from the top to the bottom, the object can be lowered, and the object holding means moves from the bottom to the top. If the object to be transported is placed on the protrusion at the moving portion, it can be raised.

The positioning control means controls the driving means to position the protrusion of the carried object holding means at a predetermined carried-in article carrying position. The carry-in-side carrier means guides the object to be carried onto the protrusion at the carried-in position.
Further, the unloading-side transporting unit is installed at a predetermined transporting object unloading position adjacent to the moving track of the protrusion, and unloads the transport target object placed on the protrusion from the protrusion.
That is, the object to be conveyed is horizontally conveyed by the carry-in side conveying means and carried into the conveyed-object carry-in position, and then conveyed in the vertical direction as the conveyed object holding means moves, and then carried out by the carry-out side conveying means. It is transported again in the horizontal direction.

According to the present invention, since the object to be conveyed is moved in the vertical direction, even if the object to be conveyed is moved from the ground to the underground or from the underground to the ground, a space occupied by a device required for the conveyance. Is very small and can make effective use of space. Further, in the present invention, since the conveyed object is moved while the conveyed object holding means is moved by the endless revolution supporting means, it is not necessary to reverse the driving direction on the way as in the case of reciprocating movement, and the stopping operation is not performed. Since the number of times is reduced, the time required for one transport cycle can be shortened. In particular,
Since a plurality of conveyed object holding means can be installed at intervals in the endless circuit supporting means, it is possible to execute a plurality of conveying cycles while the endless circuit supporting means makes one rotation, and the driving speed of the endless circuit supporting means. The time required for transportation can be shortened without increasing the height.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a front view of a lifting / conveying device according to an embodiment of the present invention, and FIG. 2 is a right side view thereof.
3 is an enlarged cross-sectional view taken along line III-III of FIG.
A vertical section taken along line IV-IV is shown in FIG. 4, and is taken along line VIII-VI in FIG.
FIG. 8 shows an enlarged cross section viewed from the line II. In this embodiment, the main body 50 of the lifting / conveying device is equipped with a spool (8A, 8B, ...
.) Are sequentially received from the upper conveyance conveyor 9 in the previous process on the ground side (position above the horizontal line indicated by the symbol D), and are vertically lowered to the underground (position below the horizontal line indicated by the symbol D). ) Lower conveyors 10 ₁ , 10 ₂ installed in
It is conveyed to the lower conveyance conveyors 10 ₁ and 10 ₂ and conveyed to the next process.

The upper transfer conveyor 9 and the lower transfer conveyors 10 ₁ and 10 ₂ each include a large number of rotatable rollers.
It is arranged side by side at regular intervals in the direction of travel,
Further, it is arranged so as to be inclined slightly downward with respect to the horizontal plane in the traveling direction. On the upper transfer conveyor 9 and the lower conveyor 10 _1, 10 ₂ Thus, spool - Le (8A, 8B, · · ·) are by the weight of itself,
It moves unmoved in the direction of travel (generally horizontal) indicated by the arrow.

As shown in FIG. 1, the main body 50 of the lifting and lowering transporting device is a right transporting mechanism 50R which is symmetrical to each other.
And the left side transport mechanism 50L. The right transport mechanism 50R, each rotatable 3 filtrates - consisting of La 2 pairs of spool - Le holding Russia - are equipped La unit 1A ₁ and 1A _2, the left side transport mechanism 50L, each pivot Two sets of spool holding roller unit 1B consisting of three freely adjustable rollers
₁ and 1B ₂ are provided. Although details will be described later, by driving the electric motor 12, the spool holding roller units 1A ₁ and 1A ₂ move in the direction of the arrow along the orbit XR to hold the spool. The roller units 1B ₁ and 1B ₂ move in the direction of the arrow along the orbit XL.

Right side transport mechanism 50R and left side transport mechanism 50L
Have substantially the same configuration, so only the right side transport mechanism 50R will be described. Referring to FIG. 3, bearings 5 ₁ and 5 ₂ are fixed to vertically extending frames 6 ₁ and 6 ₂ , respectively, and a shaft 4 ₁ is rotatably supported by the bearings 5 ₁ and 5 _2. ing. On the shaft 4 _1, three sprockets wheel - Le 7R, 2 ₁ and 2 ₂ are fixed.

Below each of the bearings 5 ₁ and 5 ₂ ,
Located bearing 5 ₃ and 5 ₄ are as shown in FIG. 8, the bearing 5 ₃ and 5 ₄ are each the frame - are fixed to the arm 6 ₁ and 6 _2. The shaft 4 ₂ is rotatably supported by the bearings 5 ₃ and 5 ₄ . Two sprocket wheels 2 ₃ and 2 ₄ are fixed on the shaft 4 ₂ . The sprocket wheels 2 ₃ and 2 ₄ are located below the sprocket wheels 2 ₁ and 2 ₂ , respectively. Between the Le 2 _3,閉Ru - - upper sprocket wheel - le 2 ₁ and the lower side of the sprocket wheel Yes spanned the down 3R _1, similarly, the sprocket wheel - - Choi to form a pull-2 ₂ and sprocket wheel - Le 2 ₄ Choi - down 3R ₂ is are spanned.

The sprockets are fixed on the shaft 4 ₁ Hui - Above the Le 7R, sprocket wheel - Le 17R
Are arranged, and these sprocket wheels are connected to each other by a chain 18R. The sprocket wheel 17R is supported by a shaft 16, and another sprocket wheel 15 fixed to the shaft 16 is connected to an electric motor (inverter motor) via a speed reducer 13. It is connected to 12 drive shafts. Further, as shown in FIG. 1, the sprocket wheel 1
The sprocket wheel 17L disposed adjacent to the 7R is connected to the 7R.
7L is a left side transport mechanism 50L via a chain 18L.
It is connected to the sprocket wheel 7L. Therefore, if the electric motor 12 is driven, the right transport mechanism 50R
The sprocket wheel 7R and the sprocket wheel 7L of the left side transport mechanism 50L are rotationally driven.

Referring again to FIG. Sprocket wheel
When Le 7R is rotated via the shaft 4 ₁ a sprocket wheel - so le 2 ₁ and 2 ₂ are driven sprocket wheel - and down 3R _1, sprocket wheel - - Choi hung on le 2 ₁ Le 2 _The chain 3R ₂ hung on ₂ moves around in the same direction. Further, Choi - Le 2 ₃ is rotated, Choi - - sprocket wheel is accompanied to the circulation of the emissions 3R ₁ sprocket wheel is accompanied to the circulation of the emissions 3R ₂ - le 2 ₄ rotates.

The elongated support plates 21 and 22 are
Each of them has one end fixed to the outer peripheral side of the chain 3R ₁ and the other end fixed to the outer peripheral side of the chain 3R ₂ , and is supported so as to be always kept horizontal between these two chains. ing. On the outer peripheral side of the support plate 21, each roller of the spool holding roller unit 1A ₁ is cantilevered to be supported 3
Two shafts are fixed, and a rotatable guide roller 23 is installed on the inner peripheral side. Similarly, on the outer peripheral side of the support plate 22, each roller of the spool holding roller unit 1A ₂ is provided.
Three shafts which cantilever and rotatably support the rotor are fixed, and a rotatable guide roller 24 is installed on the inner peripheral side. As shown in FIGS. 3 and 4, the support plate 21
Guide roller 23 and the guide roller 24 of the support plate 22
A guide plate 25 extending in the vertical direction is arranged at a position where it can abut.

Therefore, when the portions of the chains 3R ₁ and 3R _{2 to which} the support plates 21 are fixed are in the position to move in the vertical direction, as shown in FIG. 4, for example, the spool holding roller unit 1A. Each roller of ₁ is held horizontally and descends or rises in the direction of the arrow as it is. In the example of FIG.
A spool holding roll located inside the right transport mechanism 50R.
The spool 8B around which the welding wire is wound is supported by the la unit 1A ₁ and the spool holding roller unit 1B ₁ located inside the left side transport mechanism 50L. In this state, if the chains 3R ₁ , 3R ₂ , 3L ₁ and 3L ₂ are circularly moved in a predetermined direction, the spool 8B is supported,
You can lower it.

As shown in FIG. 3, each roller of the spool holding roller unit 1A ₁ has four rollers 10a, 10b, 10c and 10d provided on the lower transfer conveyor 10 _1.
Are located in the middle of adjacent ones. Further, as shown in FIG. 2, the lower transfer conveyor 10 ₁ B -
The rollers 10a, 10b, 10c and 10d are respectively supported by bearings provided at the tips of projecting frames 31a extending vertically from the support base 31. Thus, spool - Le holding Russia - each La units 1A ₁ and 1A ₂ b - la, each b of the lower conveyor 10 ₁ - without interfering with La, can pass through between them, various frame -
It does not interfere with the system.

For example, as shown in FIG. 3, the spool holding roller units 1A ₁ and 1B ₁ supporting the spool 8B.
But lowered, the lower transfer conveyor 10 ₁ B - La 10a,
When moving below 10b, 10c and 10d, the spool 8B on the spool holding roller units 1A ₁ and 1B ₁
Moves onto the lower transfer conveyor 10 ₁ . Further, since the lower transfer conveyor 10 ₁ is inclined, spool - Le 8B
Moves in the direction of the arrow by its own weight, further Noriutsuri the lower transfer conveyor 10 _2, is further conveyed in the direction of the arrow. In addition, the spool holding roller units 1A ₁ and 1B ₁
But the lower transfer conveyor 10 ₁ B - La 10a, 10b,
When passing through 10c and 10d, a spool holding roll
The la units 1A ₁ and 1B ₁ do not stop, and while the spool is descending, it is replaced.

In order to receive the spool 8B carried by the upper transfer conveyor 9 as shown in FIG. 2, the main body 50 of the lifting / lowering transfer device is located at a position opposite to the upper transfer conveyor 9 in order to receive the spool 8B. Holding roller units 1A ₁ and 1B ₁
(Or 1A ₂ , 1B ₂ ) must be positioned and stopped. Therefore, in this embodiment, when the spool holding roller unit 1A ₁ or 1A ₂ is positioned a predetermined distance before the predetermined stop position (position facing the upper conveyor 9), the guide roller 23 or A stop position sensor (limit switch) LS for detecting 24 is installed on the guide plate 25, and using the signal output from the stop position sensor LS, the spool holding roller units 1A ₁ , 1B ₁ and 1A ₂ and 1B ₂ are positioned at predetermined positions.

Further, as shown in FIG. 2, the spool (8
The spool sensor 1 is provided at a position adjacent to the receiving position of B).
1 is installed. The spool sensor 11 is a reflection type optical sensor, and is located at a position facing the upper transport conveyor 9 to hold the spool holding roller units 1A ₁ and 1B ₁ (or 1).
When A _2, 1B ₂₎ is present, the spool - Le holding Russia - spray on La unit - whether Le is present, i.e., spool from the upper transfer conveyor 9 - detecting whether Le is carried To do. Each time the spool sensor 11 detects the loading of the spool, the driving of the electric motor 12 is started, and the spool is transported downward.

FIG. 6 shows the configuration of the electrical equipment section of this apparatus. Referring to FIG. 6, the control unit 43 including a microcomputer includes the stop position sensor LS and the spray.
The signals output from the sensor 11 are input, and in response to these signals, a control signal is output to the inverter 44 to output an electric motor.
The drive of the controller 12 is controlled. The power supply unit 42 converts the electric power supplied from the AC power supply 41 into direct current and supplies the direct current to the control unit 43 and the inverter 44. Inverter 44
Generates AC power having a frequency corresponding to the signal output by the control unit 43, and applies the AC power to the electric motor 12. The rotation speed of the electric motor 12 is determined by the frequency of the AC power supplied to it. Therefore, the control unit 43 can control the rotation speed of the electric motor 12. The electric motor 12 is rotationally driven only in the forward rotation direction and does not rotate in the reverse direction.

The outline of the processing of the control unit 43 is shown in FIG. 7, and the change in the driving speed of the electric motor 12 is shown in FIG. The operation of the control unit 43 will be described with reference to the drawings. When the power is turned on, initialization is first executed in step 71, and in the next step 72, driving of the electric motor 12 (speed V1) is started. Then, in the next step 73, referring to the signal output by the stop position sensor LS, the spool holding roller units 1A ₁ , 1B ₁ (or 1A ₂ , 1B ₂ ) are brought to a predetermined stop position (actually, stop). When it is detected that the reference position (before the position) has been reached, the process proceeds to the next step 74. Step 74
Then, the drive speed of the electric motor 12 is decelerated at a predetermined deceleration rate, and the drive is stopped when the speed becomes zero. As a result, the spool holding roller units 1A ₁ and 1B
₁ (or 1A ₂ , 1B ₂ ) is accurately stopped at a predetermined stop position, that is, a position facing the upper conveyor 9.

In the next step 75, the spool sensor 1
1 monitors the state of the signal output, and the spool holding roller unit 1A ₁ , 1B ₁ (or 1A ₂ , 1B ₂ )
Check whether or not Le (8B) has been accepted. When the acceptance of the spool is detected, the process proceeds to the next step 76. In step 76, the counting of the internal timer is started, the drive of the electric motor 12 is turned on, and the speed thereof is increased with the passage of time at a predetermined acceleration rate. In the next step 77,
Whether or not the drive speed of the electric motor 12 has reached a predetermined V2 (see FIG. 5) is identified. When the speed reaches V2, the process proceeds from step 77 to step 78.

In step 78, the acceleration of the electric motor 12 is terminated, and the electric motor 12 is continuously driven at a constant driving speed V2. In the next step 79, it is discriminated whether or not the elapsed time after starting the timer reaches 1.5 seconds. When 1.5 seconds have passed, the process proceeds to the next step 80.
In step 80, deceleration control for reducing the drive speed of the electric motor 12 at a predetermined deceleration rate is started. Then, in the next step 81, it is discriminated whether or not the drive speed of the electric motor 12 has reached a predetermined V1 (see FIG. 5). When the speed reaches V1, the process proceeds from step 81 to step 82. In step 82, the deceleration of the electric motor 12 is completed, and the electric motor 12 is continuously driven at a constant driving speed V1. Then, returning to step 73, when the stop position is detected, deceleration is started in step 74, and when the speed becomes zero, the driving of the electric motor 12 is stopped.

That is, when the acceptance of the spool is detected,
As shown in FIG. 5, first, the motor drive speed is accelerated from 0 to V2 at a constant acceleration rate (about 0.5 seconds), and then the motor is driven at a constant speed V2 for a predetermined time (about 1.0 second). After that, the motor drive speed is decelerated from V2 to V1 at a constant deceleration rate (about 0.2 seconds), and then the motor is driven at a constant speed V1.

When driven at a relatively low constant speed V1, the spool holding roller units 1A ₁ and 1B ₁ (or 1A ₂ and 1B ₂ ) on which the spool is mounted are moved by the lower conveyer 10. ₁ b - La 10a, 10b, passes between the 10c and 10d, when the spool thereof - possess Le on the lower conveyor 10 ₁ while descending. Since lowering speed V1 Le is relatively small, spool - - this time the spool forces applied to them by the collision between Le and the lower conveyor 10 ₁ is relatively small. Further, as shown in FIGS. 1 and 2, the support table 31 for supporting the lower transfer conveyor 10 _1, base via the compression coil spring 32 - souffle - because it is supported by the arm 33, spool - applied to the Le Impact is further reduced. Therefore, the possibility of damage to the spool is extremely small.

Spool transfer (discharging) from the spool holding roller units 1A ₁ and 1B ₁ (or 1A ₂ and 1B ₂ ) on which the spool is placed to the lower conveyor 10 ₁ is completed. After that, the other spool holding roller unit 1A ₂ , 1
When B ₂ (or 1A ₁ , 1B ₁ ) reaches the stop position, deceleration of the driving speed is started, and the driving is stopped in a short time (about 0.2 seconds). The spool - Le receiving position spool stops at (upper conveyor 9 and a position facing) - Le holding Russia - la unit 1A _2, 1B ₂ (or 1A _1, 1B ₁₎ the following spool - accept le.

In this example, the distance between the two sets of spool holding roller units 1A ₁ and 1A ₂ (and 1B ₁ and 1B ₂ ) is half the circumference of the chains 3R ₁ and 3R _2. ing. In other words, while the chains 3R ₁ and 3R ₂ move half a circle, the positions of the two sets of spool holding roller units 1A ₁ and 1A ₂ are exchanged, and the spool transport cycle is changed (see the following). It will be possible to receive a spool). That is, the chain 3R ₁ ,
Since the time required for the 3R ₂ to move half a cycle is the time of the spool transfer cycle, the spool transfer cycle becomes sufficiently short without driving the chains 3R ₁ and 3R ₂ at a particularly high speed. .

In the above embodiment, a pair of chains is used.
2 sets of spool holding roller units (1A ₁ and 1A ₂ ) were installed in the space (3R ₁ and 3R ₂ ) at intervals of half the lap length, but one set of spool holding rollers was installed. It is possible to carry the spool only by installing the la units, and conversely, it is possible to install three or more sets of the spool holding roller units. However, the timing of the drive speed control needs to be changed appropriately according to the number and positions of the spool holding roller units.

Further, instead of the sprocket wheel and chain of the above embodiment, a pulley or roller and a belt may be provided.

Further, in the above embodiment, the heavy spout
The right and left transport mechanisms 50R and 50L, which are symmetrically installed on the left and right sides, are provided as a pair to hold the left and right carriages. However, if a relatively light object is to be lifted or lowered, one of the mechanisms is installed. The object can be lifted and lowered by itself.

Further, in the above embodiment, the case where the upper spool is conveyed downward has been shown, but conversely, the device for conveying the lower spool to the upper position is also slightly changed. Can consist of That is, the chain (3R ₁ , 3R ₂ )
Driving direction is changed to the opposite direction, the installation positions of the spool sensor 11 and the stop position sensor LS are changed, and the stop position (spool receiving position) and the spool dispensing position of the spool holding roller unit are changed. You can reverse and.

[0040]

As described above, according to the present invention, since the mechanism for vertically moving the object to be conveyed is provided, the object to be conveyed can be moved, for example, from the ground to the underground or from the underground to the ground in a narrow space. Therefore, the space occupied by the device can be reduced and the space can be effectively used.

Further, in the present invention, since the object to be conveyed is moved while the conveyed object holding means is being moved by the endless circling support means, it is not necessary to reverse the driving direction midway as in the case of reciprocating movement. Since the number of stop operations is reduced, the time required for one transport cycle can be shortened.
In particular, since a plurality of conveyed object holding means can be installed in the endless circuit supporting means at intervals from each other, it is possible to execute a plurality of conveyance cycles while the endless circuit supporting means makes one rotation, and Even if the driving speed is not increased, the required transportation time can be shortened.

Further, as in the above-mentioned embodiment, when the carrying-in detecting means for detecting whether or not the carrying object is carried in and the carrying-in detecting means detecting the carrying object are carried in, the driving is automatically carried out. In the case of including a transport start control means for starting the drive of the means and vertically moving the transport target,
Since the raising / lowering operation can be automatically started each time the object to be conveyed arrives, the apparatus can be operated unmanned.

Further, as in the above-described embodiment, the transport assembly (50R, 50L) composed of the upper and lower support means, the endless circling support means, and the transported object holding means is provided to the left and right with respect to the transport path of the transported object. By installing two objects in a symmetrical shape, even heavy objects can be stably transported.

[Brief description of drawings]

FIG. 1 is a front view showing the entire lifting and lowering conveyance device of an embodiment.

2 is a right side view of the device of FIG. 1. FIG.

FIG. 3 is an enlarged transverse sectional view taken along the line III-III in FIG.

FIG. 4 is a vertical sectional view taken along line IV-IV in FIG.

FIG. 5 is a time chart showing a change in speed of an electric motor.

FIG. 6 is a block diagram showing an electrical component section of the apparatus of FIG.

7 is a flowchart showing the operation of the control unit shown in FIG.

FIG. 8 is an enlarged transverse sectional view taken along the line VIII-VIII in FIG.

[Explanation of symbols]

1A ₁ , 1A ₂ , 1B ₁ , 1B ₂ : Spool holding roller unit 2 ₁ , 2 ₂ , 2 ₃ , 2 ₄ , 7R, 7L: Sprocket wheel
Le 3R _1, 3R _2, 3L _1, 3L _2: Choi - down 4 _1, 4 _2: shaft 5 _1, 5 _2, 5 _3,
5 _4: bearing 6 _1, 6 _2: frame - arm 8A, 8B, · ·
-: spool - le 9: the upper transfer conveyor 10 _1, 10 _2: lower transfer conveyor 10a, 10b, 10c, 10d: b - La 11: spool - Rusensa 12: electric motor - motor 13 - reduction gear 15,17R, 17L : Sprocket wheel 16: Shaft 18R, 18L: Chain 21, 22: Support plate 23, 24: Guide roller 25: Guide plate 31: Support stand 31a: Frame 32: Compression coil spring 33: Base Frame 41: AC power supply 42: Power supply unit 43: Control unit 44: Inverter 50: Main body of lifting and lowering transport device 50R: Right transport mechanism 50L: Left transport mechanism XR, XL: Circular orbit LS: Stop position sensor

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hisayuki Nakanishi 2-140, Higashi-Taishi, Yao-shi, Osaka Prefecture Osaka Joint Instrumentation Co., Ltd.

Claims (3)

[Claims] 1. A vertical support means disposed at least at two positions in the vertical direction, at least one of which is rotatably supported; supported by the vertical support means at respective vertical positions, and along a predetermined orbit. Endless circling support means configured to freely circulate around; a projection fixed to a part of the endless circling support means for supporting an object to be conveyed is a direction substantially perpendicular to a moving direction of the endless circling support means. At least one conveyed article holding means formed in a projecting manner; a driving means for rotationally driving at least one of the upper and lower supporting means; and controlling the driving means to cause a protrusion of the conveyed article holding means to Positioning control means for positioning at a predetermined carried-in position; on the protrusion at the carried-in position,
The carrying-in side conveying means for guiding the object to be conveyed; and the object to be conveyed, which is placed at a predetermined object unloading position adjacent to the moving track of the protrusion, and is placed on the protrusion. An elevating / conveying device, which is provided with a carrying-out side carrying means for carrying out from the. 2. A carry-in detection unit that detects whether or not a target object has been carried onto the protrusion at the carried-in position; and the carry-in information indicating that the target object has been carried onto the protrusion. 2. The elevating / conveying device according to claim 1, further comprising: a conveyance start control means for automatically starting the driving of the driving means to vertically move the object to be conveyed when detected by the detecting means. 3. The upper and lower support means, endless circling support means,
2. The elevating / conveying device according to claim 1, wherein the transport assembly constituted by the transport object holding means is installed as a set of two in a symmetrical manner with respect to the transport path of the transport object.