KR950000382B1 - Stacker - Google Patents

Abstract

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Description

Stacker

1 is a front view of a roller conveyor in the loader of the present invention.

2 is a side view of the roller conveyor viewed from the workpiece supply side.

3 is a view of the principle of driving a roller conveyor.

4th front view of the loader.

5 is a block diagram showing the electrical system of the present invention.

6 is a side view of the loader shown in FIG.

7 is a partially cut away plan view of another embodiment of a roller conveyor.

* Explanation of symbols for main parts of the drawings

1: roller conveyor 2, 21: belt

3: roll 4, 13, 14: pulley

5: frame 7: axis

8: bolt 9: hole

10 cylinder 15 regulator

17: bracket 18: hole

100: loader 101: main body

102: slide 103: detector

104: slide driving means 105: tray

106: load detector 107: tray drive cylinder

108: belt conveyor 110: box

111: controller 113, 114, 115: solenoid valve

The present invention relates to an improvement of the conveying part for transporting a workpiece, in particular into the main body of the loader, rather than a stacker for stacking the workpiece.

Lining and cut fabrics in the textile factory are glued by hot press and fed to the stacker one by one. This type of loader is disclosed in DE-OS P 1660982.8 and in Japanese Utility Model Publication No. 42592/1986. This type of loader uses a belt conveyor as a means of transporting a workpiece consisting of lining and fabric bonded by a hot press. On the counter of the loader, a table is arranged to move between the operating position and the folded position. It is designed to face very close to the underside of the conveyor when the table is in the operating position. The workpiece supplied from the press is conveyed and pressed against the table by the conveyor as the conveyor belt rotates. When the workpiece is transported to its intended position, the table is retracted to the retracted position and the workpiece falls down and accumulates or collects on the collection site.

However, when static electricity accumulates on the belt and the workpiece due to friction, the workpiece is attracted by the belt due to the action of the electrostatic force acting between them. In some cases, when the table is moved to the retracted position, a portion of the workpiece is strongly pulled onto the belt and does not fall completely on the loading table. This results in a poor loading of the workpiece, which may fold or crease. This does not achieve the desired purpose of the loader, which in turn stacks the workpiece.

Relatively high electrostatic charges occur after many workpieces are transported or when the workpieces are mixed fibrous fabrics. Thus, the workpiece sometimes attaches to the belt and does not try to fall off. Nevertheless, if the next workpiece is to be transported behind it, the workpiece will be concentrated around the falling position and these workpieces must be manually stacked by the operator.

In order to prevent the effects of static electricity, it is contemplated to use electrostatic dischargers or conductive fibers in the loader. However, the electrostatic induction increases to the maximum level when the workpiece and the table are separated from each other.

For example, when a workpiece of 100% polyester fabric is transported by a Teflon-type belt, the level of static electricity at the moment of table recovery rises from 10 to 20 KV, at least 10 times the value before recovery (Kasu Denki Kabu) When measured with a collected form measuring instrument model KS-525 manufactured by Shiki Kaisha).

Conventional electrostatic dischargers do not instantaneously remove a significant amount of static electricity from the workpiece. Even in loaders with anti-static equipment, parts of the workpiece are strongly attached to the belt, resulting in disordered loading of the workpiece. Moreover, if the electrostatic discharger is integrated in the loader, the overall loader size becomes large. On the other hand, if conductive fiber prices are used, the price of the workpiece increases.

A method of removing static electricity by injecting ions onto the belt using a corona discharger has been proposed, which does not have the effect of removing static electricity from a loader that comes close to the belt of the workpiece.

It is therefore an object of the present invention to eliminate the effects of static electricity on the workpiece and to use inexpensive workpieces to minimize the size of the entire loader unit in order to provide a loader for collecting and stacking the workpieces neatly.

The present invention has been proposed in view of solving all the above-mentioned problems. The stacker of the present invention accommodates a plurality of workpieces fed continuously from an external unit. Workpieces are collected and stacked on the stack. The loader is characterized by having a transport means for receiving and transporting workpieces at various locations. When the workpiece is moved to a predetermined position, the workpiece discharging means located under the transport means is withdrawn so that the workpiece is dropped into the loading unit.

Embodiments of the present invention will be described in detail with reference to the accompanying drawings 1 to 7.

In FIG. 4, the loader 100 is disposed adjacent to a press (not shown). Workpieces with linings and fabrics formed by hot presses are fed to the loader 100 via a belt conveyor 108. The loader 100 is composed of a main body 101 of which the basic frame is made of rectangular metal. The roller conveyor 1 carrying the workpiece therein is hooked to the upper rail 101a of the main body 101 via a bracket 17 and a regulator 15.

As shown in FIG. 1, the roller knuckle 1 is composed of a metal mold 5 such as a long plate and a plurality of rolls 3 arranged side by side in the metal mold 5 horizontally. The rear end (left end of FIG. 1) portion of the mold 5 is supported on the bracket 17 and can move vertically.

As shown in FIG. 2, each roll 3 consists of three rollers 3a made of urethane rubber. This roller 3a is rotatably supported by the shaft 7 on the metal frame 5. The roll 3 is arranged such that its lower part protrudes below the lower side of the side panel of the frame 5 as shown in FIG. Referring again to FIG. 2, a toothed pulley 4 is fitted between each pair of rollers 3a of each roll 3. The timing belt 2 extends over each row of the toothed pulley 4 along the longitudinal axis of the frame 5.

As shown in FIG. 1 and FIG. 3, the tension rolls 6, which are rotationally supported on the metal 5, are arranged between each pair of rolls 3 to apply the proper tension to the timing belt 2, Ensure a good match between 2) and toothed pulley. The guide roll 6a is rotationally disposed adjacent to the two outermost rolls 3 of the roller conveyor 1 such that the timing belt 2 is separated from the lower part of the toothed pulley 4.

The foremost shaft 7 has a toothed pulley 13 driven at its end as shown in the second road. The driven toothed pulley 14 is arranged on the output shaft of the motor 11 mounted on the front end portion of the mold 5 as shown in FIG. 1 and the timing belt 12 is connected to these two pulleys 13 and 14. Connected up. When the driven pulley 13 is rotated by the motor 11, the toothed pulley 4 is driven through the timing belt 2 which rotates the roll 3.

When referring to the regulator 15, the air cylinder 10 is disposed above the frame 5 behind the motor 11. The air cylinder 10 causes the roller conveyor 1 to operate vertically. Air cylinder 10 has two handles (10a, 10b) and the operating speed of the air cylinder 10 can be adjusted by appropriately operating with these two handles (10a, 10b). A bolt 15b is attached to the upper end of the rod of the air cylinder 10 via the connecting piece 19. The upper end of the bolt 15b is connected to a handle 15a disposed on the upper rail 101a and the height of the roller conveyor 1 is adjusted by operating the handle 15b.

A horizontal hole 9 is formed in the rear end portion on the side panel of the frame 5 so that the rearmost shaft 7 actuates the tensioning bolt 8 which is screwed into the frame 5, thereby adjusting the mechanism. It moves horizontally in the hole 9 through (not shown). In this way, the tension applied to the timing belt 2 is adjusted.

Furthermore, the row of vertical holes 18 is on the side panel of the frame 5. The shaft 7 inserted through this hole 18 is continuously tightened downward by the tension of the timing belt 2. The stopper 18a shown in FIG. 2 is designed to prevent on-axis deviation of the shaft 7.

As shown in FIG. 6, the slide 102 is disposed under the roller conveyor 1 and is disposed behind the main body 101 by the operation of the table drive cylinder 104 (see FIG. 4). Move between the retracted position (shown in straight line in FIG. 6) and the operating position (shown in dashed line) inward. In the operating position, the slide 102 is transported collaboratively with the roll 3 and causes the workpiece to fall to the tray 105 when the slide returns to the retracted position.

As shown in FIG. 4, the light receiver 103b of the light emitter 103a constituted by the workpiece detector 103 is disposed on each side of the upper rail 101a. The air cylinder 10 and the motor 11 are activated when the workpiece detector 103 detects the start of the operation of transporting the workpiece on the roller conveyor 1. When the workpiece detector 103 senses the completion of the conveying operation of the workpiece in the roller conveyor 1, the table drive cylinder 104 extends to return the slide 102 from the operating position to the retracted position. Simultaneously with the contraction movement of the slide 102 the motor 11 is stopped and the air cylinder 10 is retracted to its original shape in order to lift the roller conveyor 1 back to its original position.

The tray 105 may be mounted on the rod 107a of the air tray support cylinder 107 disposed on the bottom of the main body 1 to move up and down. A load detector 106 composed of a light emitter 106a and a light receiver 106a is disposed between the tray 105 and the slide table 102. The load detector 106 senses the height of the workpiece stacked on the tray 105. The tray support cylinder 107 is designed to maintain a uniform gap by automatically adjusting the distance between the slide 102 and the stacked workpiece top based on the detection data of the load detector 106.

The control box 110 is disposed below the belt conveyor 108 which transfers the workpiece from the pros into the loader 100. The control box 110 has a control panel on its surface and a controller 111 disposed therein as shown in FIG. The controller 111 controls the operation of the loader by driving the solenoid valves 113, 114, and 115 based on the output signal of each detector.

The workpiece detector 103 sends a start signal to the controller 111 when it detects that the workpiece has been transported to the roller conveyor 1. When the workpiece detector 103 detects the completion of the workpiece conveyance operation on the conveyor 1, it sends a termination signal to the controller 111.

When the load detector 106 detects that the height of the workpiece stacked on the tray 105 has not reached the predetermined height, it signals the controller 111 that space is left. When the load detector 106 detects that the height of the workpiece stacked on the tray 105 has reached a predetermined level, it signals the controller 111 that the space is full.

When receiving the start signal, the controller 111 drives the motor 11 through the motor driver 12. At the same time, the controller 111 also actuates the solenoid valve 113 to supply air to one chamber of the air cylinder 10 and withdraw air from the other chamber so that the cylinder 10 is pushed out.

When receiving the end signal, the controller 111 deflects air from one chamber of the air cylinder 10 and converts the solenoid valve 113 to supply air to the other chamber so that the air cylinder 10 is contracted. At the same time, the controller 111 actuates the solenoid valve 114 to supply air to one chamber of the cylinder 104 driving one table and to draw air out of the other chamber so that the rod of the cylinder 104 driving the table is out of the way. Pushed. Immediately after this operation is completed, controller 111 converts solenoid valve 114 such that cylinder 104 has its original position to retract the rod.

The controller 111 controls the solenoid valve 115 based on the signal that the space is not occupied by the load detector 106 to supply air to one chamber of the tray support cylinder 107 and withdraw air from the other chamber. The rod of the cylinder 107 is pushed out. Upon receiving a signal from the load detector 106 that the space is full, the controller 111 keeps the solenoid valve 15 in its state and holds the tray support cylinder 107 in this position.

The actual use of this loader 100 is explained in full detail. The workpiece is carried by the belt conveyor 108 to the loader 100 and into the main body 101 of the loader 100. When the workpiece detector 103 detects this, the air cylinder 10 extends to push the roller conveyor 1 down and the roller conveyor 1 rotates on the bracket 17. At the same time, the motor 11 is driven to rotate the roll 3 and the workpiece is conveyed to a predetermined position by the cooperation of the roll 3 and the slide 102. Upon completion of the workpiece transport operation with the workpiece detector 103, the table drive cylinder 104 operates to move the slide table 102 to the retracted position, where the workpiece falls onto the tray 105 and is stacked thereon.

In the meantime, the motor 11 is stopped at the same time as the slide 102 is contracted to lift the roller conveyor 1 by the contraction of the cylinder 10, which becomes the standby posture. The slide 102 quickly returns to its original position after dropping the workpiece. As the number of workpieces stacked on the tray 105 increases, the piston rod of the tray support cylinder 107 contracts to move the tray 105 in small increments.

When the workpiece is transported into the stacker 100 by the roller conveyor 1 according to the above embodiment, the workpiece is designed to contact the lower position of each roll 3 but the conventional belt conveyor is the upper surface of the workpiece. It is in contact with the entire surface of the belt. Thus, in this embodiment the contact area of the roller conveyor 1 with the workpiece is much smaller than that in the conventional conveyor so that the workpiece is not separated from the roller conveyor 1 by the static electricity applied between them.

Moreover, the contact with the workpiece in each roll 3 of the roller conveyor 1 is designed such that each roll 3 is composed of three rollers 3a so that the contact area is reduced so that the effect described above is remarkable.

Two timing belts 2 run over the toothed pulley 4 of each row sandwiched between the rollers 3a so that the tension of the timing belt 2 is applied uniformly to the entire depth of the roller conveyor 1. Thus, noise generated by the interference between the roller 3a and the metal part of the toothed poly 4 or the wear of such a part or member is prevented.

In addition, the tension applied to the timing belt 2 is controlled by the action of the tensioning bolt 8, the hole 9 and the hole 18. Thus, the tension applied by the timing belt 2 to the roll 3 is in turn adjusted and the force applied to the workpiece is adjusted to match the type of fabric.

In the above embodiment, each cylinder is designed to be driven by the controller 111 according to the condition sensed by each detector. On the tray 105, the entire process from inflow to loading of the workpiece is controlled. Thus only minimal manual work is required, which facilitates loading.

The present invention can be embodied as follows.

(1) The rollers 3a are alternately arranged as shown in FIG. In this arrangement the contact area of the roller 3a and the workpiece is further reduced so that this arrangement is more effective for mixed fibrous fabrics of chemical fibers which produce significantly static electricity.

(2) The three rollers 3a constituting each roll 3 can be replaced with a plurality of discs. This configuration of the roll 3 further reduces the contact area of the roll 3 with the workpiece. Reduction of electrostatic interaction is achieved.

(3) The surface of the roll 3 is rolled up so that a workpiece | work does not slip.

(4) Air cylinders can be replaced by hydraulic cylinders.

(5) The industrial sewing machine can be used instead of the press as a device for supplying the workpiece to the main body 101 of the stacker 100.

Claims (5)

It can be used by connecting to an external device that continuously supplies a single piece of work such as fiber as an enemy site. A tray 105 for receiving a workpiece from an external device; A main conveyor means (1) for transporting the workpiece to the tray and a drive cylinder (10) for driving it; And In a loader having a known configuration, such as a sub conveyor means comprising a slide 102 for cooperating with the conveyor 1 for transporting a workpiece and a slide drive cylinder 104 for driving the workpiece, The main conveyor 1 has a plurality of roll shafts 7 arranged in the direction in which the workpiece is transported, and each roll shaft has a plurality of rolls 3a, which are separated by a predetermined space in contact with the workpiece, and the roll drives for driving the rolls It characterized in that the motor and the pulley (11, 14) is included, in the operation of the loader, The slide 102 comprising sub conveyor means can be moved to the operating position and the retracted position, in which the workpiece is sandwiched between the roll and the slide, and in the retracted position the main Separates the workpiece from the conveyor means, loads the workpiece away from the tray located under the slide, The main conveyor means can move between a first position and a second position, in which the workpiece is sandwiched between the slide in the operating position and the main conveyor means, in the second position and then on the slide. A loader, characterized in that the main conveyor means are separated from the slide so that the workpiece can be moved. The sliding drive cylinder according to claim 1, further comprising: a completion detector (103) for detecting the end of transportation of the workpiece from the external device on the sliding stage and generating a signal instructing the end of the transportation, and a termination signal generated from the completion detecting means. And a slide drive control controller (111) for controlling (104). The conveyor driving air cylinder according to claim 1, further comprising: a workpiece detector (103) for detecting the conveyance of the workpiece from the external device and generating a conveyance operation start signal of the workpiece, and a start signal generated from the workpiece sensing means. 10 and a conveyor control controller 111 for adjusting the roll drive motor pulleys (11, 14). The loader as claimed in claim 1, wherein the loader includes a vertical movement tray (105) for receiving a workpiece and a tray drive cylinder (107) for operating the tray. A load detector (106) is provided which senses a workpiece loaded on the tray (105) and generates a detection signal, the load detector being positioned at a height between the highest and lowest positions of the tray; And a controller (111) for adjusting the tray driving cylinder (107) to adjust the height of the tray based on the detection signal.