JPH07117853A - Work conveying device - Google Patents

Abstract

PURPOSE:To reduce an installation space and eliminate a frictional phenomenon between works in conveying so as to prevent accidental damage in the work or a deterioration of the quality. CONSTITUTION:The work 5 discharged from a processing machine is fed onto the first conveyor means 3, and the work 5 on the first conveyor means 3 is moved onto the second conveyor means 7 by means of a work moving means 9, in which work holding arms 75 for holding the work 5 are provided in both ends of a rotational arm body 73 on a base platform 1. Then, the work 5 moved onto the second conveyor means 7 is conveyed onto the third conveyor means 11 interlocking with the second conveyor means 7, and the work 5 conveyed to the end part of the third conveyor means 11 by the third conveyor means 11 is discharged onto an elevating lifter 15 when the end part of the third conveyor means 11 is retracted, and consequently, the work 5 is stacked and held on the elevating lifter 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work transfer device for transferring and stacking a work, which has been processed into a predetermined shape by an arbitrary processing machine, onto, for example, an elevator lifter of a lifter means, and in particular, Prevents inadvertent damage to the work or deterioration of its quality during transport and stacking,
In addition, the present invention relates to a product that enables efficient work in a small installation space.

[0002]

2. Description of the Related Art An example of this type of work transfer device is shown in FIG. First, the base 201
There are four wheels (only two of which are shown on one side) 203 are attached to the lower surface of the base 201. A first conveyor 205 is installed on the right side of FIG. 12 above the base 201. The work 2 discharged from a processing machine (not shown) on the first conveyor 205
06 is sent. A second conveyor 207 is connected to the left side of the first conveyor 205 in FIG. 12,
Further, the third conveyor 209 is connected to the tip thereof.

On the other hand, a carriage 211 is arranged on the left side of the base 201 in FIG. 12, and can be brought into and out of contact with the base 201 within a predetermined distance. Four wheels 213 (only two on one side are shown in the figure) are attached to the lower surface side of the carriage 211.

In the above-mentioned structure, the work 206 discharged from the processing machine is sent onto the first conveyor 205, and from there, conveyed through the second conveyor 207 and the third conveyor 209 onto the carriage 211, and sequentially laminated. Will be done.
At that time, the level gradually increases due to the conveyance and stacking of the works 206. Therefore, the levels of the second conveyor 207 and the third conveyor 209 are gradually increased so as to deal with the increase in the level. still,
In FIG. 12, changes in the above levels are sequentially shown from the bottom. Further, the third conveyor 209 is controlled so as to always maintain a horizontal state. Further, on the dolly 211, the works 206 are stacked in two rows in front and back. This is the state where the dolly 211 is initially moved to the base 201 side, the first row is stacked on the left side in the drawing, and then, Dolly 211 to base 2
A predetermined amount is separated from 01, and the second row on the right side in the drawing is laminated.

[0005]

The above-mentioned conventional structure has the following problems. First, in the case of the work transfer apparatus as shown in FIG. 12, the length of the apparatus itself is relatively long, and the length of the carriage 211 is further added to it, and as a result, as a whole. There is a problem that a large space is required in the feed direction of the work 206. In addition, as another problem, the work 206 is set to the third
When the work 206 to be sent out from the conveyor 209 to the dolly 211 side, there is a problem that the work 206 to be sent out damages the upper surface of the work 206 already stacked and deteriorates the quality thereof. This is the work 206 to be sent out.
This is caused by the fact that the lower edge of the front end of the sheet is sent while rubbing the upper surface of the work 206 already laminated.

The present invention has been made on the basis of such a point, and an object of the present invention is to reduce the installation space, eliminate the phenomenon of rubbing between works at the time of conveyance, and prepare the works unprepared. Another object of the present invention is to provide a work transfer device capable of preventing various damages and deterioration of quality.

[0007]

In order to achieve the above object, a work transfer apparatus according to the present invention is such that a work on which a work to be transferred is stacked and held and a position above the base are overlapped with each other. A belt conveyor means with its end protruding in a state, and the work conveyed to the end by the belt conveyor means is discharged onto the table by retreating the end of the belt conveyor means. It is characterized by having done. At that time, it is conceivable that the end portion of the belt conveyor means is retracted while rotating in the direction of discharging the work. Further, it is conceivable that the end portion of the belt conveyor means is retracted while the rotation thereof is stopped.

Further, the first conveyor means, the second conveyor means arranged at a higher position in the vertical direction with respect to the first conveyor means, and the work being held at both ends of the rotatable arm body and always horizontal. And a work moving means having a work holding arm to be held, wherein the work on the first conveyor means is moved to the second conveyor means by rotating the work moving means. It is characterized by. At that time, the first conveyor means and the second conveyor means are provided with a plurality of conveyors at predetermined intervals, and the work moving means is provided between the conveyors of the first conveyor means and the second conveyor means. A plurality of arm bodies are provided at the positions, and each arm body and the work holding arms provided at both ends thereof are
It is conceivable to pass between the conveyors of the conveyor means and the second conveyor means from below to above or from above to below.

Further, a base, a first conveyer means mounted on the base for receiving and feeding a workpiece, and a conveyer mounted on the base to a predetermined position on the first conveyer means. Second conveyor means for receiving and transporting the formed work, and a work holding arm that is attached to the base and is always horizontally held at both ends of the rotatable arm body. (1) Work moving means for receiving a work on the conveyor means by the work holding arm and moving it to the second conveyor, and an elevating lifter attached to the base to provide a predetermined position on the second conveyor means. A lifter means for receiving the work conveyed to the lifting lifter and stacking and holding the work, and the end portion of the second conveyor means on the lifter means side is a lifter. Protrude to polymerize over means, in which in the case of discharging the workpiece lifter means side and performing by retracting the end in the counter-lifter means side. At that time, another third conveyor means is provided between the second conveyor means and the lifter means, and the third conveyor means is arranged so as to overlap with the lifter means, and the work is discharged to the lifter means side. In this case, it may be considered that the third conveyor means is retracted to the side opposite to the lifter means. Further, it is conceivable that the second conveyor means or the third conveyor means is retracted to the side opposite to the lifter means while rotating in the work discharge direction or in a state where the rotation is stopped.

[0010]

In the case of the present invention, when the work is discharged from the belt conveyor means onto the table, the end of the belt conveyor means on the table side is retracted to the opposite table side. Accordingly, first, it is possible to arrange the belt conveyor means and the base so as to overlap each other in the vertical direction, thereby reducing the space. Further, when the work is discharged, slipping of the work and rubbing with the already discharged work are eliminated to prevent deterioration of the quality of the work.

The first conveyor means and the second conveyor means having different heights.
When the work is moved to and from the conveyor means, the work moving means is used which holds the work at both ends of the rotatable arm body and has a work holding arm that is always horizontally held. And thereby
It has an extremely simple structure and is capable of moving a work in a small space.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. First, there is a base 1, and the base 1 is constructed by joining various steel materials by welding or the like. A first conveyor means 3 is installed on the left side of the base 1 in FIG. 1 and at a substantially intermediate position in the vertical direction. The work 5 discharged from a processing machine (not shown) arranged on the left side in FIG. 1 is fed onto the first conveyor means 3. A second conveyor means 7 is installed on the right side of the base 1 in FIG. 1 and above the base 1. A work moving means 9 is installed on the base 1, and the work moving means 9 moves the work 5 on the first conveyor means 3 onto the second conveyor means 7.

On the right side of the second conveyor means 7 in FIG. 1 and below the third conveyor means 7, a third conveyor means 11 is installed.
Further, below the third conveyor means 11, the base 1
The lifter means 13 is installed at the right end in FIG.
Then, the work 5 moved onto the second conveyor means 7 is conveyed from there onto the third conveyor means 11, and is conveyed and stacked on the elevating lifter 15 of the lifter means 13 by the third conveyor means 11. It is a thing. The above is the basic configuration of the work transfer apparatus according to the present embodiment, and the configuration of each unit will be described in detail below.

First, the first conveyor means 3 is shown in FIG.
First, there is a drive shaft 17, and a sprocket 19 is fixed to the drive shaft 17, as shown in FIG. Further, a drive motor 21 is arranged, and a sprocket 23 is fixed to the output shaft of the drive motor 21. A chain 25 is wound around the sprockets 19 and 23. Therefore, the drive shaft 17 is rotated by rotating the drive motor 21. The drive shaft 17 has bearings 27 at its both ends.
It is rotatably supported by 27.

A plurality of (five in this embodiment) rotating bodies (for example, pulleys) 29 are fixed to the drive shaft 17 at a predetermined pitch. On the other hand, rotating bodies (for example, pulleys) 31 are arranged on the sides corresponding to these rotating bodies 29, respectively. A belt 33 is wound around the rotating body 29 and the rotating body 31. That is, five belts 33
Are installed at a predetermined pitch, and five belt conveyors are intermittently provided. Then, the work 5 discharged from the processing machine is conveyed from the left side to the right side in FIG.

Next, the structures of the second conveyor means 7 and the third conveyor means 11 will be described. First, a drive shaft 35 is provided, and a plurality of (five in this embodiment) rotating bodies (for example, pulleys) are provided on the drive shaft 35.
37 is fixed. In addition, bearings (not shown) are arranged on both sides of each rotating body 37 to rotatably support the drive shaft 35. Rotating bodies 39 are arranged on the sides corresponding to the rotating bodies 37, respectively. The above is the basic configuration on the second conveyor means 7 side. Further, as shown in FIG. 4, rotating bodies 41, 43, 45 are arranged. Then, the rotating bodies 37, 39, 41, 4 already described
A belt 47 is wound around 3, 45. That is, the second conveyor means 7 and the third conveyor means 11 are connected to each other.

Further, as shown in FIG. 4, a drive motor 49 is arranged, and between a sprocket (not shown) fixed to the output shaft of the drive motor 49 and a sprocket 51 fixed to the drive shaft 35. The chain 53 is wound. Therefore, by rotating the drive motor 49, the drive shaft 35 rotates, which causes
The belt 47 rotates in a loop.

By the way, the third conveyor means 11 is connected with a moving body 55 as shown in FIG.
A top member 57 is fixed to the moving body 55. On the other hand, as shown in FIG. 4, a drive motor 59 is installed, and a chain 63 is wound around a sprocket 61 (not shown) fixed to the output shaft of the drive motor 59 and another sprocket 61. . Another sprocket (not shown) is coaxially fixed to the sprocket 61, and a chain 65 is wound around the sprocket and the sprocket 63. The top member 57 is fixed to the chain 65. Then, when the drive motor 59 rotates in the normal / reverse direction, the chain 67 rotates in the normal / reverse direction in a loop, whereby the top member 57, and thus the moving body 55, reciprocates. In that case, the rotating body 41
The part of is also configured to move together. That is, the entire third conveyor means 11 reciprocates in the left-right direction in FIG.
Thereby, the work 5 placed thereon is discharged onto the lift lifter 15 on the lifter means 13 side.

Next, the structure of the work moving means 9 will be described. First, there is a drive shaft 71, and a plurality of (four in the case of this embodiment) arm bodies 73 are fixed to the drive shaft 71. The positions of these four arm bodies 73 coincide with the positions between the belt conveyors of the first and second conveyor means 3 and 7 already described.
The arm body 73 is a pair of arm body elements 73a, 73a.
It consists of A work moving arm 75 is rotatably attached to both ends of the arm body 73 via a shaft 77 so as to be sandwiched by a pair of arm body elements 73a and 73a. In addition, as shown in FIG.
A free sprocket 79 is fixed to one end of 7. And the free sprockets 79 located at both ends,
79, the chain 81 is wound around the sprocket 84 fixed to the drive shaft 71 already described. or,
A sprocket 83 is fixed to the drive shaft 71 coaxially with the sprocket 84.
A chain 85 is wound between 3 and a sprocket (not shown) on the drive motor 47 side.

The work moving means 9 holds the work 5 on the first conveyor means 3 by one of the work moving arms 55 by rotating the four arm bodies 73 by the rotation of the drive motor 47. Then, it is placed on the second conveyor means 7 as it is. Next, the other work moving arm 55 holds the next work 5 on the first conveyor means 3 and moves it to the second conveyor means 7. At this time, the work moving arms 55, 55 attached to both ends of the arm body 73 are always held horizontally. That is, the arm 73 is rotated by the rotation of the drive motor 47 and the chain 81 is also rotated, so that the work moving arms 75, 75 at both ends are kept horizontal. FIG. 6 shows the relationship between the work moving arm 55, the free sprocket 79 and the shaft 77. A free sprocket 79 and a work moving arm 55 are fixed to the shaft 77. Reference numeral 80 in FIG. 6 is a bearing.

Next, the structure of the lifter means 13 will be described. As shown in FIG. 4, there is a drive motor 91, a sprocket (not shown) fixed to the output shaft of the drive motor 91, and a sprocket 9 arranged below the base 1.
A chain 95 is wound between 3 and 3. Another sprocket (not shown) is coaxially fixed to the sprocket 93, and a chain 99 is wound between the sprocket and the sprocket 97 arranged on the upper portion of the base 1. In addition, the same configuration (however, the drive motor 91
Are excluded) are installed on the opposite side. The lift lifter 15 is connected to the chains 99 on both sides.
Therefore, the normal and reverse rotations of the drive motor 91 cause normal and reverse rotations of the chains 99, 99 on both sides, whereby the lift lifter 15 moves up and down.

Further, in the work transfer apparatus of this embodiment, as shown in FIG. 4, a sensor (phototube type) and a limit switch are installed in each part. That is, the first sensor 101 is installed at the right end of the first conveyor means 3 in FIG. A second sensor 103 is installed on the right side of the second conveyor means 7 in FIG. 4, and the lifter means 1 is also provided.
A third sensor 105 is installed at the upper end of 3. Furthermore, the limit switches 107, 10
9, 111, 113, and 115 are installed, respectively.

The operation will be described based on the above configuration. First, a start switch arranged on an operation panel (not shown) is turned on. As a result, the lifter means 11 operates and the lift lifter 15 moves up. And the third sensor 1
The actuation of 05 causes the ascending operation to stop. From there, the lifting lifter 15 descends by a predetermined amount (corresponding to the thickness of the work 5) and stops. That is the initial position of the lift lifter 15. Next, the first conveyor means 3 is activated.
In this state, the work 5 is fed onto the first conveyor means 3 from the processing machine side (not shown). Work 5 sent in
Are conveyed to the right side in FIG. 4 by the first conveyor means 3. When the work 5 reaches the specified position
The sensor 107 detects and the detection signal causes the first conveyor means 3 to stop.

Then, the work moving means 9 is activated, and the four work moving arms 7 arranged at one end side thereof.
5, the work 5 on the first conveyor means 3 is taken out, moved to a position above the second conveyor means 7, and stands by in that state. Next, the next work 5 is conveyed to a predetermined position on the first conveyor means 3 by the same operation as described above. When the work moving means 9 is activated, the first work 5 waiting on the second conveyor means 7 is placed on the second conveyor means 7, and the four work pieces on the opposite side are moved. The second work 5 on the first conveyor means 3 is taken out by the arm 75 for the second conveyor means 7.
Wait at the position above.

The work 5 placed on the second conveyor means 7 is conveyed to the right side in FIG. 4 by the second conveyor means 7 and discharged onto the third conveyor means 11. When the work 5 is discharged onto the third conveyor means 11, the second sensor 103 detects it. By the detection signal of the second sensor 103, the third conveyor means 11 retreats to the left side in FIG. 4 and discharges the work 5 onto the lift lifter 15.
When the work 5 is discharged onto the lift lifter 15, the lifter means 13 descends by the thickness of the work 5. And
The third conveyor means 11 will protrude to the original position. Thereafter, by repeating the same operation, a plurality of works 5 are sequentially stacked on the lift lifter 15.

The operation of discharging the work 5 from the third conveyor means 11 onto the lift lifter 15 will be described in more detail with reference to FIGS. 7 to 9. At that time, there is a work 5 already stacked on the lift lifter 15, and a work 5 newly stacked on the work 5.
The following describes how the layers are stacked.
As shown in FIG. 7, the work 5 is discharged from the second conveyor means 7 onto the third conveyor means 11, and the state shown in FIG. 8 is obtained. At this point, the third conveyor means 11 is in a state of protruding rightward in the drawing. Then, from the state shown in FIG. 8, the third conveyor means 11 moves backward to the left side in the figure,
At that time, the backward speed and the belt rotation speed are set to be the same. Therefore, the work 5 does not slip and is stacked on the already stacked work 5 without rubbing it.

As described above, according to this embodiment, the following effects can be obtained. First, the length of the device with respect to the conveyance direction of the work 5 is shortened, whereby the installation space can be reduced. In particular, the lifter means 13 and the third conveyor means 11 are arranged so as to overlap with each other in the vertical direction with respect to the work transfer direction, and the work piece 5 is stacked on the lifter means 13 side when the third conveyor means 11 retracts. I am trying to let you. Thereby,
It is possible to shorten the length of the device in the conveyance direction of the work 5. Also, when discharging the work 5 from the third conveyor means 11 to the lifter means 13, the work 5 should be discharged without slipping and without rubbing against the already stacked works 5. With such a structure, it is possible to prevent the work 5 from being inadvertently damaged and being deteriorated in quality.

Further, in the work moving means 9, since the work moving arm 75 is always held horizontally, the taken-out work 5 may drop during the movement, or carelessly. It will not be damaged by moving.

Next, a second embodiment will be described with reference to FIGS. 10 and 11. In the case of this embodiment, the second conveyor means 7 and the third conveyor means 11 in the first embodiment are used.
It has a structure that integrates and. When the work 5 is discharged onto the lift lifter 15, the rotation of the belt 47 is stopped and the drive motor 59 is rotated to move the moving body 55 and thus the protruding portion of the first conveyor means 7. Move backward to the left. This is shown in FIG. Thereby, the work 15 is lifted and lowered by the lifter 1.
If there is a work 5 already stacked on the work 5 without slipping, it is discharged without rubbing it.

In the case of this embodiment, the first
In addition to the effect similar to that of the embodiment, the work 5 can be dropped only once, which is effective in maintaining the quality of the work and the operating time accordingly. Also, the work 5 can be transported with higher efficiency.

The present invention is not limited to the above embodiments. First, the number, pitch, length, etc. of the belt conveyors of each belt conveyor means may be set arbitrarily. The same applies to the number of arm bodies of the work moving means. Various sizes and shapes of the work can be considered.

[0032]

As described above in detail, according to the work transfer apparatus of the present invention, when the work is discharged from the belt conveyor means onto the table, the end of the belt conveyor means on the table side is opposite to the table side. Since it is carried out by retracting the belt conveyor means, it is possible to arrange the belt conveyor means and the base so as to overlap with each other in the vertical direction, and the space can be reduced. Further, when the work is discharged, slipping of the work and rubbing with the already discharged work can be eliminated, and damage to the work and deterioration of quality can be prevented. Also, the first conveyor means and the second conveyor means having different heights.
When the work is moved to and from the conveyor means, the work moving means is used which holds the work at both ends of the rotatable arm body and has a work holding arm which is always held horizontally. , With an extremely simple configuration,
Moreover, the work can be moved in a small space, which is a great effect.

[Brief description of drawings]

FIG. 1 is a side view of a work transfer device according to a first embodiment of the present invention.

FIG. 2 is a plan view of the work transfer device showing the first embodiment of the present invention.

FIG. 3 is a front view of the work transfer device according to the first embodiment of the present invention.

FIG. 4 is a side view for explaining the drive transmission mechanism of the work transfer device according to the first embodiment of the present invention.

FIG. 5 is a side view showing the structure of the work moving means in the first embodiment of the present invention.

FIG. 6 is a view showing a first embodiment of the present invention and is a view showing a mounting structure of a work moving arm.

FIG. 7 is a diagram showing the first embodiment of the present invention and is a diagram showing the action when the work is discharged to the lifter means side.

FIG. 8 is a view showing the first embodiment of the present invention and is a view showing the action when the work is discharged to the lifter means side.

FIG. 9 is a view showing the first embodiment of the present invention and is a view showing the action when the work is discharged to the lifter means side.

FIG. 10 is a diagram showing a second embodiment of the present invention and is a partial side view of the work transfer device.

FIG. 11 is a diagram showing a second embodiment of the present invention and is a partial side view of the work transfer device.

FIG. 12 is a side view of a work transfer device showing a conventional example.

[Explanation of symbols]

 1 Base 3 First Conveyor Means 5 Work 7 Second Conveyor Means 9 Work Moving Means 11 Third Conveyor Means 13 Lifter Means 15 Lift Lifters

Claims (8)

[Claims] 1. A table comprising a table on which works to be conveyed are stacked and held, and a belt conveyor means which is located above the table and whose end is projected in a state of overlapping with the table, A work transfer device, wherein a work transferred to the end of the work by the belt conveyor means is discharged onto the table by retreating the end of the belt conveyor means. 2. The work transfer apparatus according to claim 1, wherein the belt conveyor means is configured to rotate in a direction in which the work is discharged and to retract the end thereof. 3. The work transfer apparatus according to claim 1, wherein the belt conveyor means retracts an end of the belt conveyor while the rotation of the belt conveyor is stopped. 4. A first conveyor means, a second conveyor means arranged at a higher position in the vertical direction with respect to the first conveyor means, and a work which is held at both ends of a rotatable arm body and is always horizontal. And a work moving means having a work holding arm to be held, wherein the work on the first conveyor means is moved to the second conveyor means by rotating the work moving means. Work transfer device. 5. The work transfer apparatus according to claim 4, wherein the first conveyor means and the second conveyor means are provided with a plurality of conveyors at intervals of a predetermined pitch, and the work moving means is the first conveyor means. A plurality of arm bodies are provided between the respective conveyors of the first conveyor means and the second conveyor means. The arm bodies and the work holding arms provided at both ends thereof are the first conveyor means and the second conveyor. A work transfer device which passes between the conveyors of the means from below to above or from above to below. 6. A base, a first conveyor means mounted on the base for receiving and feeding a work fed therein, and a base mounted on the base and conveyed to a predetermined position on the first conveyor means. Second conveyor means for receiving and transporting the formed work, and a work holding arm that is attached to the base and is always horizontally held at both ends of the rotatable arm body. 1 work moving means for receiving the work on the conveyor means by the work holding arm and moving it to the second conveyor,
The second mount is attached to the base and has a lift lifter.
A lifter means for receiving the work conveyed to a predetermined position on the conveyor means on the lift lifter and stacking and holding the work, and the end portion of the second conveyor means on the lifter means side is superposed on the lifter means. As described above, when the work is ejected to the lifter means side, the end portion of the work is retracted to the anti-lifter means side to perform the work transfer apparatus. 7. The work transfer apparatus according to claim 6, wherein a third third member is provided between the second conveyor unit and the lifter unit.
Conveyor means is provided, and the third conveyor means is arranged so as to overlap the lifter means, and when the work is discharged to the lifter means side, the third conveyor means retracts to the anti-lifter means side. A work transfer device characterized by being performed. 8. The work transfer apparatus according to claim 6 or 7, wherein the second conveyor means or the third conveyor means is provided on the side opposite to the lifter means while rotating in the work discharging direction or stopped. A work transfer device characterized by being retracted.