JPS59124513A - Piling device for plate work - Google Patents

Abstract

PURPOSE:To make improvements in a handling speed of each plate work, by providing feed and exhaust chambers inclusive of a lot of pressure chambers being changed over and connected to each of positive and negative (suction) pressure sources, in case of a vacuum piler which vacuums and conveys a plate work in a way of attracting the backside of each multiholed belt running continuously. CONSTITUTION:A multiholed belt 22 is installed travelably in position upward a pair of lift tables 21 to be mounted with plate works 20. This multiholed belt 22 is formed up of installing a lot of small holes 23 and made up so as to enable it to travel in an A direction through rotation of a driving roller 24 by a motor 26 via a group of rollers 25, 27 and 28. At the backside of this multiholed belt 22, feed and exhaust chambers 29 are set up, and at the lower part, a lot of pressure chambers 30 are set in regular order. Also, on the top of a chamber 29, there are provided with both of a suction pressure chamber 33 interconnected to an exhaust blower 32 via an exhaust manifold 31 and a positive pressure chamber 36 interconnected to a feed blower 35 via a feed manifold 34 in an alternate manner. And, it is made up so as to install selector valves 37 interposingly between each pressure chamber 30 and each of suction pressure chambers 33 and positive pressure chambers 36.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a piling device that continuously conveys and stacks plates at a fixed location, and in particular, vacuums and depressurizes the back side of a continuously running perforated belt to adsorb the plates to the surface of the perforated belt. The present invention relates to a so-called vacuum piler that conveys plate materials.

Conventionally, when shipping steel plate coils as plates of fixed dimensions, the steel plate coils are continuously cut into fixed dimensions, and the cut plates are stacked according to the customer's requested units and then packaged. Shipping.

The equipment that laminates plates in this way is called piling equipment, but piling equipment also carries the risk of surface flaws when handling products that place importance on surface beauty, such as stainless steel BA products and hairline products. It is required to be able to continue piling work even while the laminated plates are being carried out, and to be able to handle both magnetic and non-magnetic materials. Therefore, a piling device constructed as shown in Figs. 1 and 2 has been proposed as a piling device capable of meeting these requirements (Japanese Patent Publication No.
No. 468).

That is, the piling device shown in these figures runs an endless perforated belt 2 in a fixed direction above a plurality of pedestals 1 arranged in a row, and faces each pedestal 1 with the perforated belt 2 sandwiched between them. The placed vacuum box 3 is kept under negative pressure, and the plate material 5 conveyed by the belt conveyor 4 is adsorbed onto the surface (lower surface) of the perforated belt 2 to be carried above the pedestal 1 and placed above any of the pedestals 1. By releasing the suction at , the plate material 5 is dropped onto the pedestal 1, and by repeating this operation, m layers of the plate material 5 are formed on the pedestal 1. The mechanism for releasing the suction is constructed as shown in FIG. 2, and the vacuum box 3 has multiple ventilation holes opened on the back side of the perforated belt 2 so as to match the positions through which the small holes 6 of the perforated belt 2 pass. 7, and a baffle plate 8 is disposed between the vacuum box 3 and the back surface of the porous belt 2.

The baffle plate 8 has a plurality of elongated ventilation holes 9 that match the ventilation holes 7, and the baffle plate 8 has an upwardly facing ]-shape arranged so as to straddle the perforated belt 2 at both left and right ends of the baffle plate 8. A frame 10 is attached, and by moving the perforated belt 2 along the moving frame 12 in the width direction by a baffle plate, the small holes 6 are made to communicate with the vacuum box 3, or the two are cut off. The movable frame 12 is configured to be able to move back and forth in the running direction of the perforated belt 2, and by moving the baffle plate 8 together with the movable frame 12, the position at which the adsorption of the plate material 5 is released can be arbitrarily set. There is.

Therefore, in the piling apparatus having the configuration shown in FIGS. 1 and 2, the back side of the porous belt 2 is suctioned and depressurized to remove the plate material 5.
is adsorbed onto the surface of the perforated belt 2, so there is no risk of putting an eave on the surface of the plate material 5, and after a predetermined number of plate materials 5 are stacked on the pedestal 1 on the terminal end side in the running direction of the perforated belt 2. By setting the suction to be released above the pedestal 1 in front of the pedestal 1, the stacking of the subsequent plate 5 can be continued even while the plate 5 is being carried out from the pedestal 1 on which 84 layers have been completed. Furthermore, since the plate material 5 is attracted and conveyed, even non-magnetic materials such as stainless steel can be piled.

By the way, when piling the plate material 5 obtained by cutting a steel plate coil as described above, it is normal to pile the plate material 5 immediately after cutting, so it is necessary to synchronize the cutting operation and the piling operation. In other words, the cutting speed is limited by the piling speed.

However, in the conventional device described above, the falling position of the plate 5 is adjusted by moving the baffle plate 8 together with the moving frame 12, so that the falling position of the plate 5 due to a change in length is adjusted. Since it takes a relatively long time to adjust the position and the sliding mechanism of the baffle plate 8 is provided on the moving frame 12, a compact actuator such as an air cylinder is used as the drive device to move the baffle plate 8. Therefore, there was a problem that the operation time of the baffle plate 8, that is, the switching time between adsorption and adsorption release was increased. As a result, when the above-mentioned conventional piling device is used, the plate material 5
Each time the length of the coil is changed, the cutting operation of the steel plate coil must be interrupted or the timing of cutting must be delayed.

In addition, since the switching time between adsorption and adsorption release due to the operation of the baffle plate 8 is long, in order to ensure the passage and fall of the plates 5, the intervals between the plates 5 should be widened according to the running speed of the perforated belt 2. must,
As a result, the length of the steel plate coil that can be cut per unit time becomes shorter, and this tendency is particularly noticeable when the length of the plate material 5 is shortened. In this way, in the conventional device, since the baffle plate 8 is used to switch between adsorption and removal of adsorption, the cutting speed for cutting out a predetermined length of the plate material 5 from the steel plate coil is greatly restricted, and not only the piling speed but also the plate material There were limits to how much productivity could be improved.

This invention was made in view of the above six circumstances, and it is possible to quickly switch between adsorption and removal of adsorption, and therefore, when piling plate materials obtained by cutting steel plate coils, the cutting speed is also improved. The purpose is to provide a piling device that can arbitrarily set the falling pattern of planks in a rough manner, and its features include a perforated belt that runs above multiple loading sections such as pedestals. On the back side of the perforated belt, a large number of pressure chambers are arranged over the entire area from above the loading section on the starting end side to above the loading section on the terminal end side in the running direction of the perforated belt. The back side is opened at the position where the small hole provided in the perforated belt passes through, and a switching valve is provided for each pressure chamber to communicate with each other, and the switching valve individually separates each pressure chamber from the negative pressure part lower than the atmospheric pressure to the atmospheric pressure. The present invention is configured to switch and communicate with the above-mentioned high pressure section.

Embodiments of the present invention will be described below with reference to FIGS. 3 to 8.

FIG. 3 is a schematic cross-sectional view showing one embodiment of the present invention, in which a perforated belt 22 is disposed to run above a pair of lift tables 21, which serve as a stacking section on which plate materials 20 are to be stacked. . The perforated belt 22 has a large number of small holes 23 penetrating from the front surface to the back surface, and has a driving roller 24.
The perforated belt 22 is stretched over each lift table 21 by a driven roller 25, and by rotating the drive roller 24 by a motor 26, the perforated belt 22 is stretched over each lift table 21 by a driven roller 25.
and a plurality of rollers run in the six directions of arrows in FIG. 3 via the idle rollers 27 and tension rows 528. An air supply/exhaust switching chamber 29 is arranged on the back side of the perforated belt 22, that is, at a location facing the lift table 21 with the perforated belt 22 in between. The supply/exhaust switching chamber 29 has a length extending from the starting end (left end in FIG. 3) to the terminal end (right end in FIG. 3) of the perforated belt 22, that is, from above one lift table 21 to the other lift table 21. It has the entire length up to the top and almost the same width as the perforated belt 21, and a number of pressure chambers 30 that open at the positions where the small holes 23 pass through the back surface of the perforated belt 22 are located at the lower part of the perforated belt 22. , are arranged along the running direction of the perforated belt 22, and in the upper part of the supply/exhaust switching chamber 29 are a negative pressure chamber 33 communicating with the exhaust blower 32 via an exhaust manifold pipe 31, and a supply air manifold pipe 34. Air supply blower 3
5 and 4 communication chambers and positive pressure chambers 36 are provided alternately,
Furthermore, a rotary valve 37 as a switching valve is provided between each pressure chamber 30 and the negative pressure chamber 33 and positive pressure chamber 36.

FIG. 4 is a partial detailed view showing the rotary valve 37, and FIG. 5 is a detailed view showing the drive mechanism of the rotary valve 37. Each rotary valve 37 has 90
It is configured so that the corresponding pressure of 30 yen is switched to and communicated with either the negative pressure chamber 33 or the positive pressure chamber 36 each time it rotates, and the valve body, that is, the rotor 38 is oriented in the width direction of the perforated belt 22. supply/exhaust switching chamber 29
A rotary shaft 40 is connected to an end of a shaft 39 that is integral with the shaft 38 and projects from the supply/exhaust switching chamber 29 . Rotating axis 4
0 is rotatably attached to a fixed frame 41,
The fixed frame 41 includes a pulley 42 and a belt (
A drive shaft 43 that is continuously rotated by a motor (not shown) via a motor (not shown) is provided parallel to the rotation shaft 40, and the rotation shaft 40 and the drive shaft 43 are 40 via a bearing 44 and a gear 46 fixed to a drive shaft 43. Also, a rotating wheel 40 and a gear 4 attached to it
5 through a clutch 47. That is, the clutch 47 consists of a clutch disk 48 attached to one end of the rotating shaft 40, and a clutch tube 49 attached to the gear 45 via a bracket so as to face the outer peripheral surface of the clutch disk 48. The clutch tube 49 is communicated with an air supply hose 52 via a tube 50 and a rotary seal 51, and the air supply hose 52 is connected to an air source (not shown) via a solenoid valve (not shown).

Therefore, the clutch 47 connects the gear 45 and the rotating shaft 40 by expanding the clutch tube 49 with compressed air and bringing it into pressure contact with the clutch disk 48, and connects the gear 45 and the rotating shaft 40 by removing air from the clutch tube 49 and contracting it. It is configured to disconnect from the rotating shaft 40.

Further, a brake 53 is provided on the rotating shaft 40. The brake 53 converts the pressure chamber 30 into the negative pressure chamber 33 or the positive pressure chamber 3.
This is for fixing the rotary shaft 40 to maintain the rotary 38 in communication with the rotary shaft 6, and faces the brake disc 54 attached to the other end of the rotary shaft 40 and the outer peripheral surface of the brake disc 54. The brake tube 55 is connected to an air source (not shown) through an air supply hose 56 inserted with a solenoid valve (not shown). )It is connected to the. Therefore, the brake 53 fixes the rotating shaft 40, that is, the rotor 38, by expanding the brake tube 55 with compressed air and bringing it into pressure contact with the brake disc 54, and by contracting the brake tube 55, the rotating shaft 40 is fixed.
The brakes are released.

Further, the rotary valve 37 is configured such that its rotor 38 stops at a position where the pressure chamber 30 is communicated with the negative pressure chamber 33 or the positive pressure chamber 36, and a valve for stopping the rotor 38 at such a position is used. Position detection device 5
7 is configured as follows. That is, a detection rotating shaft 59 is arranged parallel to the rotating shaft 40 on a bracket 58 attached to the fixed frame 41, and
The detection rotating shaft 59 and the rotating shaft 40 are connected by pulleys 60, 61 and a timing belt 62 attached to each. Here, the pulley 6 attached to the rotating shaft 40
0 and the pulley 61 attached to the detection rotating shaft 59 is set to 2:1. Therefore, every time the rotating shaft 40, that is, the rotor 38 rotates 906 times, the detection rotating shaft 59 rotates 18 times.
It is designed to rotate by 0°. In addition, the rotation shaft 59 for detection
Two sensitive plates 63.64 are attached to the , and a proximity switch 65.6 is attached to each sensitive plate 63.64.
6 is attached to the bracket 58, and the sensitive plate 6
Each proximity switch 65, 66 is operated every time 3.64 rotates half a rotation together with the detection rotation shaft 59, and the output signal thereof operates the solenoid valve communicating with the clutch tube 49 and the solenoid valve communicating with the brake tube 55. As a result, the rotor 38 is stopped each time it rotates 90 degrees.

Note that although the mechanism shown in FIG. 5 is for one rotary valve 37, the other rotary valves 37 have a similar configuration.

Next, the operation of the apparatus configured as described above will be explained.

For example, a plate material 20 obtained by cutting a steel plate coil (not shown) into a predetermined size is sent to the starting end side of the perforated belt 22 in the running direction A by a conveyor 67, and the plate material 20 is
The rotary valve 37 connects each pressure chamber 30 to the negative pressure chamber 33.
By communicating with each other through the porous belt 22, the porous belt 22 is adsorbed onto the surface of the porous belt 22. When the plate material 20 that has been adsorbed onto the surface of the perforated belt 22 and transported is dropped onto the right lift table 21 in FIG. 3, for example, each pressure chamber located above the left lift table 21 in FIG. 30 is connected to the negative pressure chamber 33 by each rotary valve 37, and the plate material 20 is connected to the lift table 2 on the right side.
1, each pressure chamber 30 located above the lift table 21 is communicated with the positive pressure chamber 36 by switching each rotary valve 37. In this way, the plate material 20 is placed above the left lift table 21.
The plate material 20 passes above the lift table 21 on the left side and reaches the lift table 2 on the right side.
1 and falls toward the lift table 21. In that case, it is necessary to switch the rotary valve 37 when the tip of the plate 20 reaches a certain degree of advance above the right-hand lift table 21, but such an operation requires that the plate 20 be detected by an appropriate detector. The above-mentioned solenoid valve is operated based on the output signal, thereby engaging the clutch 47 and disengaging the brake 53, thereby changing the rotor 38 by 90° from the state shown by the solid line in FIG. 4 to the state shown by the broken line. Just rotate it. Also, after dropping the preceding plate material 20,
In order to similarly drop the subsequent plate 20, the rotor 38 above the right lift table 21 is rotated another 90 degrees in the same manner as described above, and the subsequent plate 20 is
When the rotor 38 is brought to the desired position, the rotor 38 is moved to the 9
Rotate 0'. In this way, in the above device, the plate material 20
Since the suction and suction release for dropping the material to a predetermined position are performed by rotating the rotor 38 in the rotary valve 37, the suction and suction release are instantaneous (
0.05 to 0.1 seconds).

Therefore, it is necessary to leave a gap between the preceding plate material 20 and the succeeding plate material 2o by the distance that allows the perforated belt 22 to easily switch from the suction release state to the suction state. Since the time is extremely short, 20 pieces of each board
As a result, the efficiency of piling the plate material 20 can be improved, and when the steel plate coil is cut to obtain the plate material 20, the cutting speed can be increased.

Note that the above description of the operation is for the case where the plate materials 20 are stacked on the right lift table 21 in FIG.
The situation is similar when 0 is placed in the @ layer.

Furthermore, as is clear from the configuration, the above device is provided with a rotary valve 37 for each pressure chamber 30, so each pressure chamber 30 can be individually communicated with the negative pressure chamber 33 or the positive pressure air 36, and therefore the plate material It is possible to take a falling pattern according to the thickness of the 20 sheets.

Fig. 6 shows a falling pattern suitable for thick (1.5 mm or more) short materials, and the point at which the tip of the plate 20 reaches approximately the center of the stack 71 to the table 21 (Fig. 6). (A)), each rotor 38 of the rotary valve 37 corresponding to the pressure chamber 30 sucking the plate material 20 was rotated in a predetermined direction (see FIG. 6(B)), and the plate material 20 was suctioned. As shown in FIG. 6(C), each pressure chamber 30, that is, the number of pressure chambers 30 corresponding to the length of the plate material 20, is connected to a positive pressure chamber 36.
communicate with. Then, the suction at all points from the front end to the rear end of the plate material 20 is released, and the plate material 20 separates from the perforated belt 22 and falls in parallel toward the lift table 21. In that case, the plate material 20 is the perforated belt 22
Almost at the same time as they are separated from the plate, each 38 rotates another 90 degrees and holds the succeeding plate 20 in an adsorbed state (see Fig. 6).
See D).

In the experiment conducted by the present inventors, in order to ensure that the plate material 20 falls, the time required to maintain the pressure chamber 30 at positive pressure (60 mmAo) was 0.06 seconds at the shortest.

In addition, Figure 7 shows an intermediate plate thickness (0.5 to 1.4II+n+
Pi! This figure shows a falling pattern suitable for the plate material 20 (degrees), and the falling pattern shown here is one in which the plate material 20 is dropped from its tip side. That is, as shown in FIG. 7(A), from the pressure chamber 30 located above the center of the lift table 21 where the plate materials 20 are to be stacked, for example, to the terminal end in the running direction of the perforated belt 22, as shown in FIG. The pressure chamber 30 on the side is communicated with the positive pressure chamber 36 by a rotary valve 37, and the pressure chamber 30 on this side is communicated with the negative pressure chamber 33. With this setting, as shown in FIGS. 7'(B) to (E), the plate material 20 is moved from the lower part of the pressure chamber 30 that communicates with the positive pressure chamber 36, that is, from the tip. The suction is gradually released and it hangs down, and at the end of the R track, the rear pant part falls and lift table 2
1.

Furthermore, FIG. 8 is a diagram showing a falling pattern suitable for a thin plate (approximately 0.3 to 0.4 mm), and the falling pattern shown here is one in which the plate material 20 is dropped from the rear end side. That is, as shown in FIG. 8, when the tip of the plate 20 reaches above the center of the lift table 21 on which it is to be stacked, the pressure pulling the rear end of the plate 20 is ¥30. is communicated with the positive pressure chamber 36 by switching the corresponding rotary valve 37, and thereafter that pressure chamber 3
11 pressure chambers 30 on the rear end side in the running direction of the porous belt 220 are sequentially passed through the positive pressure chambers 36 from zero.

In this way, as shown in FIGS. 8(B) to 8(D), the plate material 20 is first released from adsorption on the rear end side and falls from the rear end side, and eventually the entire plate material 20 is the riff! -Falls onto the table 21. Such a falling pattern is caused by plate material 2
An appropriate detector detects that the front end or rear end of the plate 20 has reached a predetermined position, and the rotor 38 corresponding to the rear end of the plate 20 is rotated based on the output signal. (not shown), and the timer causes the rotors 38 corresponding to the other pressure chambers 30 to sequentially rotate by a certain period of time. In addition, in the case of the falling pattern shown in FIG. 8, immediately after starting to drop the preceding plate material 20, the pressure chamber 30 communicated with the positive pressure chamber 36 is immediately switched to the negative pressure chamber by switching the corresponding rotary valve 37. 33 to maintain suction of the subsequent plate 20 as shown in FIGS. 8(E) and (F), and after the tip of the subsequent plate 20 reaches a predetermined position, the above As described above, the rotary valve 37 is operated to cause the plate material 20 to fall from the rear end side. In addition, when the plate material 20 is dropped as shown in FIG. By first bringing the part into contact with the guide table 68, the speed in the longitudinal direction of the plate 20 is reduced, and the tip of the plate 20 is prevented from breaking due to the tip of the plate 20 coming into contact with the stopper 69 forcefully. preferable.

In the above description, the rotary valve 37 is used as the switching valve for switching the pressure chamber 30 to the negative pressure chamber 33 or the positive and positive chambers 36 and passing the 51, but the switching valve in this invention is not limited to the rotary valve. For example, it may be a solenoid valve. Further, the positive pressure chamber 36 preferably has a pressure equal to or higher than atmospheric pressure in order to ensure that the plate 20'' falls, but the positive pressure section in this invention simply opens to the atmosphere and has a pressure equivalent to atmospheric pressure. Good too.

As is clear from the above description, the piling device of the present invention has a piling device that is installed on the back side of a perforated belt running above a plurality of storage parts such as pedestals, etc., from above the loading part on the starting end side in the running direction of the perforated belt. A large number of pressure chambers are arranged over the entire area above the loading section on the terminal end side, and each pressure chamber is opened at a position where a small hole provided in the perforated belt passes through on the back side of the perforated bell 1-. A switching valve is provided for communication with each pressure chamber, and the switching valve allows each pressure chamber to be individually switched between a negative pressure section lower than atmospheric pressure and a high pressure section higher than atmospheric pressure. The pressure in the chamber can be changed extremely quickly from negative pressure to positive pressure, and from positive pressure to negative pressure. Therefore, according to the piling device of the present invention, the interval between the plates to be adsorbed to the surface of the perforated belt is narrowed. It is also possible to ensure that the board material is transported by suction and dropped when the suction is released, and as a result, the piling efficiency of the board material is improved.
Furthermore, when piling the plate material obtained by cutting the coil, the cutting speed can be increased and the productivity of the plate material can also be improved. In addition, in this invention, a large number of pressure chambers are provided throughout the plurality of storage sections, and each pressure chamber is individually switched into a negative pressure section and a positive pressure section for communication.
The position of attachment and suction release can be arbitrarily selected, and therefore various falling patterns can be adopted, such as allowing the plate material attracted to the perforated belt and conveyed to fall from its leading end or trailing end.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram showing an example of a conventional piling device, Fig. 2 is a perspective view of its main parts, Fig. 3 is a schematic diagram showing an embodiment of the present invention, and Fig. 4 is a schematic diagram of an air supply/exhaust switching chamber. A partial sectional view, FIG. 5 is a detailed view of the mechanism for rotating the rotor, and FIGS. 6 to 8 are explanatory views showing falling patterns of the plate materials, respectively. 20... Plate material, 21... Lift table, 22
...Porous belt, 23...Small hole, 30...Pressure chamber, 33...Negative pressure chamber, 36...Positive pressure chamber, 37
...Rotary valve, 38...Rotor. Applicant Kawasaki Steel Corporation Token Machinery Co., Ltd. Agent Patent attorney Takehisa Toyota (and one other person) Figure 8

Claims (1)

[Claims] A perforated belt with a large number of small holes is run above a plurality of stacking areas where board materials are to be stacked, and the back side of the perforated belt is vacuumed and depressurized to adsorb the board material to the surface of the perforated belt. In a piling device that drops suction onto the loading area by releasing suction above the loading area, a large number of pressure chambers opening at positions where the small holes pass through the back surface of the perforated belt are installed on the starting end side in the running direction of the perforated belt. They are arranged over the entire area from above the loading section to above the loading section on the f4 end side, and are provided with a switching valve in communication with each pressure chamber, and the switching valve individually separates each pressure chamber from atmospheric pressure. A piling device for plate material, characterized in that it is configured to switch and communicate a low-pressure negative pressure section and a high-pressure section above atmospheric pressure.