JPH05262452A - Device to superpose sheet upon metallic plate - Google Patents

Abstract

PURPOSE:To provide a device to superpose a sheet upon a metallic plate which can cope speedily with a dimensional change in the metallic plate by superposing the sheet accurately/reliably upon the metallic plate. CONSTITUTION:A coil shape continuous metallic belt 14 is conveyed after being cut in predetermined length, and a sheet being a coil shape laminated paper is cut by a sheet cutting means 16, and is superposed upon the tip part of a metallic plate so as to correspond to the tip part of the sheet, and the sheet cutting means 16 is operated in response to the length of the metallic plate, and in this way, the sheet can be superposed accurately/reliably upon the metallic plate.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is designed to prevent metal sheets such as stainless steel sheets from being scratched due to contact with each other by interposing sheets called interleaving sheets. TECHNICAL FIELD The present invention relates to a device for stacking a sheet on a metal plate to prevent it.

[0002]

BACKGROUND OF THE INVENTION One prior art is shown in FIG.
Coil-shaped metal strip 1 and sheet 2 which is a coiled interleaving paper
Are accurately stacked by the roll 3, then cut by the cutting means 4, stacked by the piler 5 in the box 6, and packed.

In such a prior art, since the metal strip 1 and the sheet 2 are sheared in a stacked state and packed in the box 6 as they are, the metal plate after cutting is inspected and each plate is damaged. In order to inspect how many damaged parts there are and rank the quality of the metal plate, the operator peels the sheet on the metal plate after cutting by the cutting means 4 and performs the above-mentioned inspection. There must be. Therefore, it takes a lot of labor to inspect all of a large number of metal plates, and therefore
There is a problem that the sampling inspection is unavoidable and the workability of the inspection is extremely poor.

Another prior art is shown in FIG.
In this prior art, the metal plate 7 is conveyed through the cutting means.
Then, the sheet 8 which is an interleaf sheet is pulled by a pair of pinch rolls 9 and conveyed while the front end portion 8a of the sheet 8 is engaged.

A new problem of the prior art shown in FIG. 19 is that when the sheets 8 are interposed between the steel plates 7 as shown in FIG. The reference numeral 1 of the metal plate 7 is defined by the tip 8a of the sheet 8.
The portion indicated by 0 is bent, causing a so-called waist break, resulting in damage to the metal plate 7.

In the prior art shown in FIG. 19 as described above, the front end portion 8a of the sheet 8 engaged with the metal plate 7 is packed in the box as shown by the arrow 11 in FIG. In addition, there is a problem that peeling is easy.

Further, in the prior art, as shown in FIG. 22, there is a problem that the sheet 8 on the metal plate 7 forms a space containing air to easily form wrinkles 12.

Further, in the prior art, the sheets 8 that have been cut in advance are prepared in accordance with the length of the metal plate 7, and the sheets are stacked one by one on each metal plate 7. Therefore, it is necessary to stack and prepare sheets 8 having various sizes corresponding to the size of the metal plate 7, the storage place becomes large, and when the size of the metal plate 7 changes, the metal after the change There is a problem that it is difficult to quickly select and supply a sheet corresponding to the size of the plate.

[0009]

SUMMARY OF THE INVENTION An object of the present invention is to accurately stack a sheet on a metal plate accurately and surely, and to quickly respond to changes in the dimensions of the metal plate. To provide a superimposing device.

[0010]

SUMMARY OF THE INVENTION The present invention is an apparatus for cutting a continuous metal strip into a predetermined length and superposing a sheet on the cut metal plate. A means for conveying the sheet from the sheet cutting means, and a means for superimposing the sheet on the metal plate by associating the tip portion of the sheet from the sheet conveying means with the tip portion of the cut and conveyed metal plate. A means for detecting the length of the sheet from the sheet cutting means, and a control means for operating the sheet cutting means in response to the output from the length detecting means so that the sheet has a length corresponding to the metal plate. And a sheet stacking device for stacking a sheet on a metal plate.

Further, the present invention is characterized in that the superposing means includes a supporting roll for supporting and transporting the metal plate, and a brush roll arranged to face the supporting roll and pressing the sheet onto the metal plate. The apparatus for stacking a sheet on a metal plate according to claim 1.

Further, according to the present invention, the sheet conveying means has an endless conveying belt on which a sheet is placed and conveyed, and a plurality of suction holes are formed, and an opening portion opened toward the sheet conveying portion of the conveying belt. However, the present invention is characterized by including a suction casing having a negative pressure suction chamber, and a charging unit that is disposed on the upstream side of the transport belt and that is charged so as to electrostatically attract the sheet to the transport belt.

Further, according to the present invention, the sheet conveying means is further arranged on the downstream side of the conveying belt, and is arranged on a further downstream side in the conveying direction than the discharging means for eliminating the charge on the sheet on the conveying belt. And a guide plate that guides the sheet separated from the conveyor belt.

Further, the present invention is provided with a discharging means for discharging the sheet upstream of the sheet cutting means, and the discharging means comprises an electrically insulating plate-like body which contacts one surface of the sheet and the other side of the sheet. And a contact member made of an electrically insulating fiber for elastically pressing the sheet against the plate by contacting the surface.

Further, according to the present invention, a wrinkle removing means for the sheet is provided between the sheet cutting means and the sheet conveying means,
The wrinkle removing means of the sheet is provided so as to face a member supporting one surface of the sheet and the other surface of the sheet, so that the brush tip ends come into contact with both sides from the widthwise center position of the passage of the sheet, A brush roll formed by winding the brushes in opposite directions from the central position.

[0016]

As described above, according to the present invention, a continuous metal strip such as a stainless steel strip is cut into a predetermined length to obtain a metal plate, and the surface of the cut metal plate is scratched. After inspecting, the sheets can be stacked on the metal plate, and the plurality of metal plates can be stacked on each other with a sheet of interleaving paper interposed therebetween and packaged in a box.

The continuous sheet is passed from the sheet cutting means to the sheet conveying means, the leading end of the sheet is overlapped with the leading end of the metal plate, and the sheet is cut into a length corresponding to the metal plate. So keep the metal plate flat,
The sheets can be easily overlapped with each other by interposing a sheet between the plurality of metal plates, which prevents the metal plates from bending as shown in FIG. 20.

The means for superimposing the sheet on the metal plate conveys the metal plate supported by a supporting roll, and the sheet is pressed onto the metal plate by a brush roll.
In this way, the sheet is exactly superposed on the metal plate, so that the problem that air is present between the metal plate and the sheet and the sheet is wrinkled is solved.

In the sheet conveying means for conveying the sheet from the sheet cutting means, a negative pressure suction chamber is formed in the suction casing, whereby a plurality of suction holes formed in the endless conveying belt sucks the outside air. The sheet on the conveyor belt is attracted to the surface of the conveyor belt, and a charging means such as corona discharge is provided on the upstream side of the conveyor belt. The charging means charges the sheet to the conveyor belt. The sheet is attracted by the electrostatic force, and thus the sheet is attracted to the transport belt by the vacuum suction force and the electrostatic force. Therefore, the sheet peels from the transport belt during transport, or the sheet is undesired on the transport belt. It is possible to prevent the position and posture from shifting.

Further, the sheet conveying means is provided with a discharging means on the downstream side of the conveying belt, so that the electrostatic force between the conveying belt and the sheet is removed. Therefore, the sheet on the conveyor belt can be smoothly peeled off and conveyed by the subsequent guide plate, and in this way, the sheet can be guided so as to be superposed on the metal plate.

In the sheet cutting means, if an electric charge is applied to the sheet, the sheet may be undesirably attached due to electrostatic force and the sheet cannot be cut accurately. In order to solve this problem, in the present invention, a charge removing unit is provided on the upstream side of the sheet cutting unit, and the charge removing unit removes the electric charge applied to the sheet cutting unit, for example, a roll-shaped sheet. .. This static eliminating means supports one surface of the sheet by a plate-like body made of an electrically insulating material such as bakelite so as to be in contact with the sheet, and the other surface of the sheet is made of a contact member made of an electrically insulating fiber such as cotton. Contact with carpet such as inorganic fibers or wool. It was confirmed by an experiment conducted by the inventor of the present invention that the charge of the sheet can be released by this. The sheet may be charged while being supplied to the sheet cutting unit, and the charge removing unit discharges the sheet supplied to the sheet cutting unit.

In order to allow the sheet supplied from the sheet cutting means to the sheet conveying means to adhere to the conveying belt by electrostatic force and vacuum suction force without causing wrinkles on the conveying belt of the sheet conveying means. A sheet wrinkle removing means is provided. The wrinkle removing means of the sheet supports one surface of the sheet supplied from the sheet cutting means by a supporting member such as a roll, and the other surface of the sheet is brought into contact with a brush roll. The brushes are wound, for example, in a spiral shape in opposite directions from the central position so that the brush tips contact with both sides from the central position in the width direction of the passage. Therefore, in the sheet supplied from the sheet cutting means to the passage of the sheet, the center position in the width direction is aligned with the center position in the width direction of the sheet passage, and the center position in the width direction of the sheet is
The sheet coincides with the central position of the brush roll, and the sheet is attracted to the surface of the conveying belt of the sheet conveying means without being wrinkled by the sheet due to the force acting on both sides in the width direction by the brush roller.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an overall system diagram of one embodiment of the present invention. The continuous metal strip 14 such as a stainless steel strip is used for the coil 1
5 state, cut by the running shearing means 16,
In the inspection step 17, the surface of each metal plate is inspected for scratches and the like, and is conveyed by the belt conveyor 18 as indicated by an arrow 19. The belt conveyor 18 includes an endless belt 20 and a roll 21. The cutting means 16 may be, for example, a guillotine cutter, or may be rotary shear or the like.

A stacking device 22 according to the present invention is installed for stacking sheets of kraft paper as interleaving paper on a metal plate and then packing the sheets in a box. The sheet 23 is formed into a roll shape as indicated by reference numeral 24, the sheet is cut from the sheet feeding device 25 by the sheet cutting means 26 in accordance with the length of the metal plate, and the sheet conveying means 27 is indicated by the arrow 28. The sheet is conveyed as shown, and the metal plate and the sheet are superposed by the superposing means 29. Thus, as shown in FIG. 2, a sheet 31 slightly smaller than the sheet 31 is placed on the metal plate indicated by reference numeral 30.
Are accurately stacked, conveyed by the belt conveyor 32, stacked and packed. Such a series of operations is achieved by the processing means 33 implemented by a microcomputer or the like performing the operations shown in FIG.

FIG. 4 is a sectional view showing the structure including the sheet feeding device 25, the sheet cutting means 26, the sheet conveying means 27, and the superposing means 29. In the sheet feeding device 25, the sheet 23 is driven by the motor 34. The sheet is supplied from the rolls 24, passed through a pair of rolls 35 provided at a fixed position, a dancer roll 36 that applies a tension to the sheet 23 by its own weight, and further supplied to the sheet cutting unit 26 via a charge eliminating unit 37. In the sheet feeding device 25, a sheet roll 38 for backup is provided, and the sheet can be fed by being driven by a motor 34.

FIG. 5 shows the charge eliminating means 37 and the sheet cutting means 2.
6 is a cross-sectional view showing 6 and the sheet wrinkle removing means 38, and further showing a part of the sheet conveying means 27. FIG. Static eliminator 37
At the sheet 23, as shown in FIG.
In order to remove the electric charges of the sheet and remove the electricity, the support member 39 provided at the fixed position has a plate made of an electrically insulating material, such as Bakelite, which contacts one surface of the sheet 23 (the lower surface of FIG. 6). The body 40 is fixed. Support member 3
9 is made of a material such as iron and is grounded. A contact member 41 for contacting the other surface of the sheet 23 (upper surface of FIG. 6) is provided. The contact member 41 is for elastically pressing the sheet 23 against the plate-like body 40, and is made of electrically insulating fiber, for example, inorganic fiber such as cotton or wool. The thickness d1 of the contact member 41 is, for example, 10 mm, and the length L1 thereof is, for example, 50 m.
m. The base end portion of the contact member 41 is fixed to a support piece 43, the support piece 43 is angularly driven by a lever 45, and the lever 45 is angularly driven by a double-acting cylinder 44, so that the contact member 41 is moved upward. Displaced,
The sheet 23 can be easily interposed between the plate 40 and the contact member 41. The contact member 41 is
It also serves to remove wrinkles on the sheet 23.

In the sheet cutting means 26, the wrinkle removing means 3
A pair of rolls 4 for nipping and conveying the sheet 23 from 7
7, 48 are provided. The rotation of the roll 47 is controlled by a motor 49, and the number of rotations of the roll 47, that is, the supply length of the sheet 23 is counted by the sheet length detecting means 50. The roll 47 is made of urethane rubber having a hardness of 90, for example, and the roll 48 is made of neoprene rubber having a hardness of 70.

The roll 47 is supported by a support roll 93, which prevents the rolls 47 and 48 from bending.

FIG. 7 is a sectional view around the rolls 47 and 48, and FIG. 8 is a front view of the rolls 47 and 48 as seen from the sheet entrance side. The maximum width of the seat 23 is indicated by the reference symbol L2, and the seat 23 is located at the center position 52 (see FIG. 8) in the width direction of the seat passage 51.
The widthwise central positions of 3 are aligned and are conveyed. Air bleeding grooves 53; 54, 56 are formed in the rolls 47, 48 symmetrically with respect to the central position 52. Nozzle members 59, 60 having nozzles 57, 58 for injecting compressed air to the upper and lower surfaces of the sheet 23 are provided in the passage 51a downstream of the rolls 47, 48 in the sheet 23.
Are placed. The nozzles 57 and 58 are formed so as to be inclined so as to be on the upstream side in the transport direction as they approach the sheet 23. Compressed air is supplied to the air chambers 61 and 62 of the nozzle member 59, and the air is jetted from the nozzles 57 and 58 at a uniform flow rate in the width direction of the sheet 23. Nozzles 57 and 58
Is a roll 47, as indicated by reference numeral L3 in FIG.
It is formed to extend in the direction perpendicular to the paper surface of FIG. 7 over the entire width of 48. The sheet 23 sandwiched by the rolls 47 and 48 is conveyed in the air by the compressed air ejected from the nozzles 57 and 58. Guide pieces 64, 65 are fitted in the grooves 53; 54, 56, and the guide pieces 64, 6
5 is connected to the nozzle members 59 and 60. Thereby, the sheet 23 can be stably guided and conveyed by the compressed air from the nozzles 57 and 58. Nozzle 57,
The guide member 6 is provided below the seat passage 51 on the downstream side of 58.
6 and the support member 67 are arranged above. The guide member 66 and the support member 67 are made of a material such as bakelite. In order to cut the sheet 23 passing through the passage 51a, a cutting blade 68 is provided facing the passage 51a.

FIG. 9 is a perspective view of the cutting blade 68, and FIG.
FIG. 10 is a cross-sectional view of the cutting blade 68 as seen from the cutting plane line XX in FIG. 9. The cutting blade 68 extends over the width direction of the sheet 23 and over the maximum width L2 of the sheet 23 shown in FIG. The cutting blade 68 is configured by repeating a plurality of crest edges 69 and a plurality of trough edges 70 in the width direction of the sheet (left and right direction in FIG. 9).
It is sharpened as shown in. The cutting blade 68 is guided along the guide member 66 by being projected into the passage 51 a by the link mechanism 72,
The cutting edges 68 and 70 of the cutting blade 68 break and cut the sheet 23, and the sheet 23 is supported by the support member 67.
In this way, the sheet 23 is cut by the cutting blade 68.

FIG. 11 is a simplified sectional view showing the structure of the link mechanism 72. The link mechanism 72 is supported by a base 74 of the sheet cutting means 26. The cutting blade 68 is
It is guided by the guide means 75 toward the seat passage 51a. The first links 76 and 77 are arranged at intervals along the width direction of the seat 23 (left-right direction in FIG. 11),
One ends thereof are pin-connected to the cutting blade 68 by pins 78 and 79, respectively. Third and fourth links 8
0 and 81 are arranged at intervals along the width direction of the seat 23, and the pins 8 are attached to the base 74 whose one end is a fixed position.
2, 83 are pin-coupled respectively. In a double-acting cylinder 84 driven by air pressure, a piston rod 87 fixed to a piston 86 projects in both axial directions of the cylinder 85 (both left and right directions in FIG. 11). One end of the piston rod 87 of the double-acting cylinder 84 is pin-coupled to the other ends of the first and third links 76, 80 by a pin 88. The other end of the piston rod 87 is pin-coupled to each end of the second and fourth links 77, 81 by a pin 89. Pins 78, 79, 82, 83, 88, 8
The axes of 9 are parallel to each other, and the cutting blade 68, the double-acting cylinder 84, and the base 74 form two parallelogram links at the top and bottom.

FIG. 12 is an enlarged sectional view of the vicinity of the double-acting cylinder 84. The double-acting cylinder 84 has a pair of trunnion shafts 90 extending perpendicularly to the axis of the cylinder 84.
The trunnion shaft 90 is fitted into a vertically extending support groove 92 of a bracket 91 that is erected on the base 74. Therefore, the cylinder 84 has its axial direction (see FIG.
1 and the lateral direction of FIG. 12) are prevented. Further, the cylinder 84 has the axial direction and the pin 7
Displacement in the vertical direction (vertical direction in FIGS. 11 and 12) with respect to the axial direction of 8, 79, 82, 83, 88, 89 is allowed.

A two-position electromagnetic switching valve 96 is connected to the double-acting cylinder 84 via flexible tubes 94 and 95, and compressed air is supplied by switching from a compressed air supply source 97 to two chambers of the double-acting cylinder 84. To be done.

In the state shown in FIG. 11, the double-acting cylinder 84
11, the piston rod 87 is displaced to the right in FIG. 11 and is in a stopped state, at which time the cutting blade 68 is descending,
It is retracted from the passage 51a of the seat 23. Seat 23
The processing circuit 33 switches the position of the solenoid valve 96 when is to be disconnected. As a result, compressed air is supplied to the cylinder chamber on the right side of the double-acting cylinder 84, and the links 76, 77; 80,
81 is in the state shown by virtual lines 98 and 99 in FIG. In this way, while the links 76, 77; 80, 81 are angularly displaced by the displacement of the piston rod 87 of the double-acting cylinder 84 in one direction, the cutting blade 68 is guided by the guide means 75 and the passage 51 a of the seat 23. To project and then back. By displacing the piston rod 87 of the double-acting cylinder 84 in one direction (leftward in FIG. 11) in this way, the cutting blade 68 can be driven to cut the sheet 23, so that the sheet 23 is run. The disconnection can be performed while in the open state. In order to cut off the seat 23 again while compressed air is being supplied to the cylinder chamber on the right side of the double-acting cylinder 84, the solenoid valve 96 is brought into the state shown in FIG. 11, which causes the piston rod 87 to move in the other direction. (Displacement to the right of FIG. 11) and returns to the state of FIG. 11, and at this time also, the cutting blade 68 projects into the passage 51a of the seat 23 and then retreats, thus running the seat 23.
Can be disconnected instantly.

The sheet 23 supplied to the cutting means 26 is
Since the charge removing means 37 has previously removed the charge, the compressed air ejected from the nozzles 57 and 58 causes the passage 51 to pass through.
The sheet can be stably conveyed and run in the inside of a, and thus the cutting blade 68 can accurately cut the sheet 23.

Sheet cutting means 26 and sheet conveying means 27
Sheet wrinkle removing means 38 is provided between and.
In this wrinkle removing means 38, as shown clearly in FIG. 7, the support roll 101 having a right columnar shape made of a material such as iron is used.
The brush roll 102 is arranged to face the support roll 101. Roll 101 is sheet 2
3, the brush roll 102 contacts the other surface of the sheet 23, that is, the upper surface. Rolls 101, 10 of the passage 51a of the sheet 23
Guide members 103 and 104 that guide the sheet 23 are disposed between the sheet cutting means 26 and the upstream side of the sheet cutting means 26.

FIG. 13 is a plan view of the brush roll 102. In this brush roll 102, a brush 106 is spirally wound around an outer peripheral portion of a shaft 105 made of a material such as a right columnar iron as shown in FIG. This brush 1
In the case of the sheet 06, the brush tip portion 107 of the brush 106 is located on both sides of the seat 23 from the central position 52 of the passage 51a.
3 are spirally wound in the opposite directions from the central position 52 so as to come into contact with each other. This brush roll 10
The rotationally driven direction of 2 is indicated by reference numeral 108, and the feeding direction of the sheet 23 is indicated by reference numeral 109, and thus the sheet 23 is supported by the roll 101 and comes into contact with the brush roll 102, thereby 23
A force is exerted on the outer side in the width direction, so that the seat 2
The wrinkle of 3 is removed.

The brush 10 constituting the brush roll 102
6 includes a large number of fibers 110, a wire member 111 that bends and supports the center of the fibers 110, and a metal holding member 112 that holds the fibers 110 from both sides. Fiber 11
Zero may consist of, for example, nylon, polyethylene, horsehair, and the like. Especially, horse hair does not generate static electricity,
Therefore, the sheet 23 can be reliably conveyed to the sheet conveying means 27, which is convenient. Wrinkle removing means 3
The sheet 23 from 8 is guided to the conveyance means 27, and is adsorbed and conveyed by the endless belt 113 by the vacuum adsorption force and the electrostatic force.

FIG. 15 is a simplified perspective view of the sheet conveying means 27, and FIG. 16 is the sheet conveying means 27 of FIG.
5 is a simplified sectional view taken along the line V-V in FIG. The conveyor belt 113 is made of an electrically insulating material, for example, a material such as rubber, and conveys the sheet 23 thereon, and a plurality of suction holes 114 are formed in rows along the sheet conveying direction 28. .. This conveyor belt 113
The sheet conveying portion 115, that is, the suction casing 117 having the opening portion 116 that opens toward the upper stretched portion of FIGS. 15 and 16 is provided at the fixed position. The suction casing 117 has a suction chamber 118 communicating with the opening 116, the connecting portion 119 is connected to the fan 120, and thus the suction chamber 118 has a negative pressure. Opening 11
6 is formed elongated along the sheet conveying direction 28, and the sheet conveying portion 1 of the conveying belt 113 is formed in the opening 116.
The suction holes 114 at 15 face each other. As a result, the sheet from the wrinkle removing means 38 is vacuum-sucked and transported on the surface of the sheet transport portion 115 of the transport belt 113.

Further, in the sheet conveying means 27, the charging means 122 is provided on the upstream side of the conveying belt 113, and the sheet 23 and the conveying belt 113 are charged by the corona discharge generated here. Therefore, the sheet 23
The carrier belt 113 is attracted to the carrier belt 113 by the electrostatic force, and thus the sheet 23 is also attracted to the carrier belt 113 by the electrostatic force as described above. Therefore, it is possible to prevent the position of the sheet 23 from being displaced and the posture thereof to be displaced while the sheet 23 is being conveyed by the conveyor belt 113. The conveyor belt 113 receives the power from the motor 124 as the clutch 12
One roll 12 which is transmitted via 5 and is rotationally driven.
It is stretched between 6 and another roll 127. In the suction casing 117, the roll 127 has a distance L4 in FIG.
Only located upstream. The distance L4 is, for example, 2
It is 00 mm. The thickness of the conveyor belt 113 is, for example, about 1 mm, and the suction chamber 118 is, for example, −20 to −40.
mmAq.

The static eliminating means 1 is provided on the downstream side of the sheet conveying means 27.
29 is provided, thereby removing the charges of the conveyor belt 113 and the sheet 23 on the conveyor belt 113. The static eliminator 129 may have a configuration for performing corona discharge having a polarity opposite to that of the static eliminator 122 described above, for example.
A guide plate 130 is provided further downstream in the transport direction 28 than the charge removing unit 129, and thereby the lower surface of the sheet 23 separated from the transport belt 113 is guided.

FIG. 17 is a sectional view showing the superposing means 29 and its vicinity. The metal plate 14a is conveyed by the belt conveyor 18 and guided to the support roll 131 that supports and conveys the metal plate 14a. Support roll 131
Is driven to rotate in the direction of arrow 132, and its surface is made of a material such as polyurethane. Support roll 13
The brush roll 133 is arranged so as to face 1. The brush roll 133 is rotationally driven in the direction of arrow 134. The brush roll 133 has a large number of radially extending brushes 135, and the fibers of the brushes 135 are made of materials such as nylon, polyethylene and horse hair. The brush roll 133 elastically presses the sheet 23 guided by the guide plate 130 onto the metal plate 30 supported and guided by the support roll 131.
In relation to the belt conveyor 18, a metal plate detecting means 136 is provided for detecting the front end of the metal plate 30, and a sheet detecting means for detecting the front end of the sheet 23 is provided upstream of the superposing means 29. 137 is provided.

A pair of pinch rolls 138 and 139 is provided downstream of the superposing means 29. These pinch rolls 138 and 139 are made of a material such as urethane, one pinch roll 138 is rotatably provided at a fixed position, and the other pinch roll 139 is vertically displaced by a double-acting pneumatic cylinder 140. The charging means 141 is provided on the downstream side of the pinch rolls 138 and 139, whereby the charging means 141 is accurately placed on the metal plate 30.
The sheet 31 that has been overlapped and cut as described above is charged and brought into close contact, and is conveyed by the belt conveyor 32. The detection means 142 detects the metal plate 30. The pinch rolls 138 and 139 serve to prevent the sheet 31 on the metal plate 30 from wrinkling. The distance L5 between the pinch roll 139 and the detection means 142 may be 500 mm, for example.

The overall operation will be described with reference to FIG. 3 again. Moving from step a1 to step a2, the cutting means 1
The metal strip 14 is cut according to 6, and the surface of the metal plate 30 after cutting is inspected in the inspection step 17. The cutting command or the cutting detection signal of the metal band 14 by the cutting means 16 is given to the processing circuit 33, whereby the clutch 125 of the sheet conveying means 27 is turned on, so that the conveying belt 113 is conveyed by the conveyor belt of the belt conveyor 18. Two
The sheet 23 travels at the same speed as 0 and the sheet 23
3 is adsorbed by vacuum suction force and electrostatic force and conveyed, and thereafter, the electricity is removed by the electricity removing unit 129, and the leading end portion of the sheet 23 and the sheet detecting unit 137 are used.
When detected in step a4, in step a5
The clutch 125 is turned off. As a result, the conveyor belt 113 is stopped, and the sheet 23 is stopped in a state where the leading edge of the sheet 23 is detected by the sheet detecting unit 137, and the sheet 23 enters a standby state.

Then, in step a6, the metal plate 30
When the leading end of is detected by the metal plate detecting means 136, the timer in the processing circuit 33 starts the time-keeping operation in step a7. In this timer, after the front end of the metal plate 30 is detected by the metal plate detection means 136, the front end of the metal plate 30 is moved to the sheet detection means 137 by a distance L.
This is the time T1 required for traveling by 6 and traveling. When it is determined that the time T1 has elapsed in step a8, the clutch 125 of the sheet conveying means 27 is operated in step a.
It is turned on at 9, and thereby the superposing means 2
9, the sheet 23 is supplied together with the metal plate 30,
The sheet 31 is superposed on the metal plate 30 and conveyed. In step a9, the length of the sheet 23 is detected by the sheet length detecting means 50, and in step a10, whether the length matches the length of the metal plate 30 which is preliminarily changeably input to the processing circuit 33 and is set. It is determined in step a12 described below. In step a10,
Detecting means 1 arranged upstream of the belt conveyor 32
When the leading end of the sheet 30 or the sheet 23 is detected by 42, the upper pinch roll 139 is raised by the cylinder 140 in step a11, thereby preventing the sheet 31 on the metal plate 30 from wrinkling. Step a
When it is determined in step 12 that the length of the sheet 23 conveyed by the sheet conveying means 27 matches the preset length of the metal plate 30, step a1.
3, the sheet 23 is cut by the sheet cutting means 26, and the clutch 125 is cut to convey the conveyor belt 11.
Stop 3.

When it is determined in step a14 that the rear end of the metal plate 30 or the sheet 31 on the metal plate 30 is detected by the detecting means 142, in step a15, the pinch roll 139 is lowered by the cylinder 140, and the succeeding metal plate 30 is detected. The sheet 31 and the sheet 31 can be pressed. Thus, in step a16, a series of operations ends.

In the present invention, in addition to kraft paper as a sheet, a protective film (Safty Protective Vinyl, abbreviated to SPV),
A polyethylene sheet, a nylon sheet, or the like can be used, and other sheets can also be used.

Although the link mechanism 72 has a structure having two parallelogram links in the above-described embodiment, it may have a structure other than that.

[0049]

As described above, according to the present invention, for example, a coil-shaped continuous metal strip is cut by a sheet cutting means on a metal plate obtained by cutting the continuous metal strip into a predetermined length. The sheets are cut and superposed, and the leading end of this sheet is made to correspond to the leading end of the metal plate, and the sheet is superposed on the metal plate as described above, and the sheet cutting means corresponds to the length of the metal plate. Since it was made to operate, the sheets can be accurately and surely stacked on the metal plate, there is no risk of the metal plate breaking, and there is no risk of the sheet peeling from the metal plate. Even if the size, that is, the length of the metal plate is changed, the sheets can be cut and overlapped appropriately in accordance with the length of the metal plate.

Further, according to the present invention, the metal plate is supported by the supporting roll, and the sheet conveyed by the conveying means is pressed by the brush roll and superposed on the metal plate supported by the supporting roll. Therefore, there is no problem that air is present between the metal plate and the sheet to cause wrinkles in the sheet.

Further, according to the present invention, in the sheet conveying means, the sheet is vacuum-adsorbed on the endless conveying belt and is adsorbed by the electrostatic force by the charging means, so that the sheet is conveyed on the conveying belt. The sheet is prevented from having an undesired position and posture, and the sheet can be accurately stacked on the metal plate.

Further, according to the present invention, since the sheet conveyed by the conveyor belt is destaticized, it is guided to the metal plate by the guide plate, so that the sheet is smoothly peeled off from the conveyor belt. Therefore, the sheet can be accurately overlapped on the metal plate.

Further, according to the present invention, in order to enable the sheet to be cut accurately by the sheet cutting means, a charge removing means is provided upstream of the sheet cutting means,
The charge removing means elastically presses a contact member made of an electrically insulating fiber such as a carpet against the other surface of the sheet while supporting one surface of the sheet with an electrically insulating plate such as bakelite. The electric charge of the sheet can be removed, and the sheet can be cut accurately by the sheet cutting means.

Further, in the present invention, a sheet wrinkle removing means is provided between the sheet cutting means and the sheet conveying means,
When the widthwise center position of the sheet is conveyed so as to coincide with the widthwise center position of the sheet passage, the brush roll exerts a force on both sides of the sheet from the widthwise center position, and thus wrinkles the sheet. The sheet can be conveyed to the sheet conveying unit without being generated while being flat.

[Brief description of drawings]

FIG. 1 is a system diagram showing an overall configuration of the present invention.

FIG. 2 is a plan view showing a state in which a sheet 31 is superposed on a metal plate 30.

FIG. 3 is a flowchart for explaining the operation of the embodiment of the present invention.

FIG. 4 is a diagram illustrating a sheet feeding device 25 including sheet cutting means 26,
FIG. 6 is a cross-sectional view showing a sheet conveying unit 27, an overlapping unit 29, and the like.

5 is a sectional view showing a sheet cutting means 26, a wrinkle removing means 38, and a sheet conveying means 27. FIG.

FIG. 6 is an enlarged cross-sectional view of a static eliminator 37.

FIG. 7 is a sectional view showing a sheet cutting means 26 and a wrinkle removing means 38.

FIG. 8: Rolls 47, 48 in the sheet cutting means 26
FIG. 4 is a cross-sectional view of the sheet as viewed from the sheet entrance side.

9 is a perspective view showing a cutting blade 68. FIG.

10 is a cross-sectional view taken along the section line 10-10 of FIG.

11 is a sectional view showing a simplified link mechanism 72 of the sheet cutting means 28. FIG.

12 is a cross-sectional view showing a double-acting cylinder 84 used in the link mechanism 72. FIG.

13 is a partially cutaway sectional view of a brush roll 102 used in the wrinkle removing means 38. FIG.

FIG. 14 is a partial cross-sectional view of the brush roll 102.

FIG. 15 is a perspective view showing a sheet conveying unit 27.

16 is a cross-sectional view of the sheet conveying means 27 taken along the section line 5-5 in FIG.

FIG. 17 is a cross-sectional view showing a superposing means 29.

FIG. 18 is a simplified system diagram illustrating certain prior art.

FIG. 19 is a cross-sectional view of another prior art.

20 is a cross-sectional view of a portion of the prior art shown in FIG.

FIG. 21 is a cross-sectional view of the prior art shown in FIGS. 19 and 20.

22 is a cross-sectional view of the prior art shown in FIGS. 19-21.

[Explanation of symbols]

 14 metal strip 16 metal strip cutting means 17 inspection step 18, 32 belt conveyor 22 stacking device 23 sheet 25 sheet feeding device 26 sheet cutting means 27 sheet conveying means 29 stacking means 30 metal plate 31 sheet 38 wrinkle removing means 40 plate-like Body 41 Contact member 47,48 Pinch roll 50 Sheet length detecting means 51,51a Sheet passage 57,58 Nozzle 59,60 Nozzle member 66 Guide member 67 Supporting member 68 Cutting blade 69 Mountain blade edge 70 Valley edge 72 Link mechanism 74 Base 75 Guide means 76 1st link 77 2nd link 80 3rd link 81 4th link 84 Double acting cylinder 86 Piston 87 Piston rod 92 Trunnion shaft 101 Support roll 102 Brush roll 106 Brush 113 Conveyor belt 117 Suction casing 118 suction chamber 122 and 141 charging means 129 discharging means 131 supporting rolls 133 brush roll

[Procedure amendment]

[Submission date] April 19, 1991

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Full text

[Correction method] Change

[Correction content]

[Document name] Statement

Title: Stacking device for a sheet on a metal plate

[Claims]

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention, for example, when stacking and packing metal plates such as stainless steel which are continuously cut and stacked, interposing sheets called interleaving sheets between the metal plates. The present invention relates to a device for stacking sheets on a metal plate for preventing the metal plates from being in contact with each other and scratched after being stacked after being stacked.

[0002]

BACKGROUND OF THE INVENTION One prior art is shown in FIG.
Coil-shaped metal strip 1 and sheet 2 which is a coiled interleaving paper
Are accurately stacked by the roll 3, then continuously cut by the cutting means 4, stacked by the piler 5 in the box 6, and packed.

In such a prior art, since the metal strip 1 and the sheet 2 are continuously cut in a stacked state and stacked as they are and packed in the box 6, the cut metal plate is inspected. In order to rank the quality of the metal plate by inspecting how many damages such as scratches are present on each plate, the operator peels the sheet on the metal plate after cutting by the cutting means 4. , The above inspection must be carried out. Therefore, a lot of labor is required to inspect all of a large number of metal plates, and it is difficult not only to scratch or stain the metal plates or sheets at the time of peeling, but also to cause wrinkles on the sheets and to accurately stack them again. Therefore, there is a problem that the sampling inspection is unavoidable, and the workability and safety of the inspection are extremely poor.

Another prior art is shown in FIG.
In this prior art, the metal plate 7 is conveyed through the cutting means.
A pair of pinch rolls 9 are attached to the front end portion 7a of the sheet 8 with the front end portion 8a of the sheet 8 which is the interleaving paper being slightly bent and engaged.
And pull and transport.

As shown in FIG. 20, the new problem of the prior art shown in FIG. 19 is that the sheets 8 are stacked between the metal plates 7 and are stacked in a box. The bent tip portion 8 of the sheet 8
By a, the portion of the metal plate 7 indicated by the reference numeral 10 is bent, so that a so-called waist bending is caused, resulting in damage to the metal plate 7.

Further, in the prior art shown in FIG. 19, only the bent front end portion 8a of the sheet 8 engaged with the metal plate 7 is accommodated in the box as shown by the arrow 11 in FIG. Before packaging, there is a problem that it is easy to peel off.

Further, in the prior art, as shown in FIG. 21, there is a problem that the sheet 8 on the metal plate 7 forms a space containing air to easily form wrinkles 12.

In still another prior art, sheets 8 that have been cut in advance are prepared according to the length of the metal plates 7, and the sheets are stacked one by one on each metal plate 7. Therefore, it is necessary to stack and prepare sheets 8 having various sizes corresponding to the size of the metal plate 7, not only the preparation is difficult but also the storage place becomes large, and the length and width of the metal plate 7 are also increased. When the cutting dimension changes, it is difficult to quickly select and supply a sheet corresponding to the changed cutting dimension of the metal plate. For example, the operating rate of a continuous cutting line for metal plates as shown in FIG. There is a problem of lowering.

[0009]

SUMMARY OF THE INVENTION An object of the present invention is to accurately and surely superimpose a sheet on a metal plate that is continuously cut and successively conveyed, and quickly respond to changes in the size of the metal plate. It is an object of the present invention to provide an apparatus for superposing a sheet on a metal plate, which is made possible.

[0010]

SUMMARY OF THE INVENTION The present invention is an apparatus for continuously cutting a continuous metal strip into a predetermined length, and stacking the sheets on the cut and sequentially conveyed metal plates. Then, the means for cutting the continuous sheet, the means for conveying the sheet from the sheet cutting means, and the leading end portion of the sheet to be cut and conveyed are made to correspond to the leading end portion of the sheet from the sheet conveying means. Means for superposing on the metal plate, means for detecting the length of the sheet from the sheet cutting means, and in response to the output from the length detecting means, so that the sheet has a length corresponding to the metal plate, A stacking device for a sheet on a metal plate, comprising: a control means for operating the sheet cutting means.

Further, the present invention is characterized in that the superposing means includes a supporting roll for supporting and transporting the metal plate, and a brush roll arranged to face the supporting roll and pressing the sheet onto the metal plate. The apparatus for stacking a sheet on a metal plate according to claim 1.

Further, according to the present invention, the sheet conveying means has an endless conveying belt on which a sheet is placed and conveyed, and a plurality of suction holes are formed, and an opening portion opened toward the sheet conveying portion of the conveying belt. However, the present invention is characterized by including a suction casing having a negative pressure suction chamber, and a charging unit that is disposed on the upstream side of the transport belt and that is charged so as to electrostatically attract the sheet to the transport belt.

Further, according to the present invention, the sheet conveying means is further arranged on the downstream side of the conveying belt, and is arranged on a further downstream side in the conveying direction than the discharging means for eliminating the charge on the sheet on the conveying belt. And a guide plate that guides the sheet separated from the conveyor belt.

Further, the present invention is provided with a discharging means for discharging the sheet upstream of the sheet cutting means, and the discharging means comprises an electrically insulating plate-like body which contacts one surface of the sheet and the other side of the sheet. And a contact member made of an electrically insulating fiber for elastically pressing the sheet against the plate by contacting the surface.

Further, according to the present invention, a wrinkle removing means for the sheet is provided between the sheet cutting means and the sheet conveying means,
The wrinkle removing means of the sheet is provided so as to face a member supporting one surface of the sheet and the other surface of the sheet, so that the brush tip ends come into contact with both sides from the widthwise center position of the passage of the sheet, A brush roll formed by winding the brushes in opposite directions from the central position.

[0016]

As described above, according to the present invention, a continuous metal strip such as a stainless steel strip is cut into a predetermined length to obtain a metal plate, and this cut metal plate is sequentially conveyed. After inspecting not only the dimensions but also the scratches on the surface accurately and accurately and surely, overlay the sheet on the metal plate,
It is possible to stack a plurality of metal plates on top of each other with a sheet of interleaving paper interposed therebetween, and then stack them into a box.

The continuous sheet is passed from the sheet cutting means to the sheet conveying means, the leading end of the sheet is overlapped with the leading end of the metal plate, and the sheet is cut into a length corresponding to the metal plate. So keep the metal plate flat,
It is possible to easily stack the sheets with the sheets interposed between the plurality of metal sheets, and then stack the sheets, which prevents the metal sheets from bending as shown in FIG. 20.

The means for superposing the sheet on the metal plate conveys the metal plate supported by the supporting roll, and the sheet is pressed against the upper surface of the metal plate by the brush roll. In this way, the sheet is exactly superposed on the upper surface of the metal plate, so that the problem that the air is present between the metal plate and the sheet and the sheet is wrinkled is solved.

In the sheet conveying means for conveying the sheet from the sheet cutting means, a negative pressure suction chamber is formed in the suction casing, whereby a plurality of suction holes formed in the endless conveying belt sucks the outside air. The sheet on the conveyor belt is attracted to the surface of the conveyor belt, and a charging means such as corona discharge is provided on the upstream side of the conveyor belt. The charging means charges the sheet to the conveyor belt. The sheet is attracted by the electrostatic force, and thus the sheet is attracted to the transport belt by both the vacuum suction force and the electrostatic force, which causes the sheet to be peeled from the transport belt during transport, or the sheet may not adhere to the transport belt. It is possible to prevent shifting to a desired position and posture.

Further, the sheet conveying means is provided with a discharging means on the downstream side of the conveying belt, so that the electrostatic force between the conveying belt and the sheet is removed. Therefore, the sheet on the conveyor belt can be smoothly peeled off and conveyed by the subsequent guide plate, and in this way, the sheet can be guided so as to be superposed on the metal plate.

In the sheet cutting means, if an electric charge is applied to the sheet, the sheet may be undesirably attached due to electrostatic force and the sheet cannot be cut accurately. In order to solve this problem, in the present invention, a static eliminator is provided on the upstream side of the sheet cutting unit, and the static eliminator removes the electric charge supplied to the sheet cutting unit, for example, a roll-shaped sheet. .. The static eliminating means supports one surface of the sheet by a plate-like body made of an electrically insulating material such as bakelite so as to be in contact with the sheet, and from the other surface of the sheet, a contact member made of an electrically insulating fiber such as cotton. Contact with carpet such as inorganic fibers or wool. It was confirmed by an experiment conducted by the inventor of the present invention that the charge of the sheet can be released by this. The sheet may be charged while being supplied to the sheet cutting unit, and the charge removing unit discharges the sheet supplied to the sheet cutting unit.

In order to allow the sheet supplied from the sheet cutting means to the sheet conveying means to adhere to the conveying belt by electrostatic force and vacuum suction force without causing wrinkles on the conveying belt of the sheet conveying means. A sheet wrinkle removing means is provided. The wrinkle removing means of the sheet supports one surface of the sheet supplied from the sheet cutting means by a supporting member such as a roll, and the other surface of the sheet is brought into contact with a brush roll. The brushes are wound, for example, in a spiral shape in opposite directions from the central position so that the brush tips contact with both sides from the central position in the width direction of the passage. Therefore, in the sheet supplied from the sheet cutting means to the passage of the sheet, the center position in the width direction is aligned with the center position in the width direction of the sheet passage, and the center position in the width direction of the sheet is
The sheet coincides with the central position of the brush roll, and the sheet is attracted to the surface of the conveying belt of the sheet conveying means without being wrinkled by the sheet due to the force acting on both sides in the width direction by the brush roller.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an overall system diagram of one embodiment of the present invention. The continuous metal strip 14 such as a stainless steel strip is used for the coil 1
From the state of No. 5, the running cutting means 16 continuously cuts, and in the inspection step 17, the dimensions and scratches on the surface of each metal plate are inspected, and the belt conveyor 18 indicates the arrow 1
9 are sequentially conveyed. The belt conveyor 18 includes an endless belt 20 and a roll 21. Cutting means 16
May be, for example, a guillotine cutter, or may be rotary shear or the like.

A stacking device 22 according to the present invention is installed for stacking sheets such as kraft paper as interleaving paper on a metal plate and finally stacking them into a box (not shown). .. The sheet 23 in this device 22 is initially in a roll shape as indicated by reference numeral 24, and the sheet is continuously cut by the sheet cutting means 26 from the sheet feeding device 25 in accordance with the length of the metal plate,
The sheets are sequentially conveyed from the sheet conveying means 27 as indicated by an arrow 28, and the metal sheet 30 and the sheet are superposed by the superposing means 29. Thus, as shown in FIG. 2, sheets 31 having almost the same size or slightly smaller than that are precisely stacked on a metal plate indicated by reference numeral 30 and sequentially conveyed by a belt conveyor 32, stacked and packed. To be done. Such a series of operations is performed by the processing means 33 realized by a microcomputer or the like.
Are achieved by performing the operations shown in FIG.

FIG. 4 is a sectional view showing the structure including the sheet feeding device 25, the sheet cutting means 26, the sheet conveying means 27, and the superposing means 29. In the sheet feeding device 25, the sheet 23 is driven by the motor 34. The sheet is supplied from the rolls 24, passed through a pair of rolls 35 provided at a fixed position, a dancer roll 36 that applies a tension to the sheet 23 by its own weight, and further supplied to the sheet cutting unit 26 via a charge eliminating unit 37. The sheet feeding device 25 is provided with a sheet roll 24a for preliminary use, and is driven by a motor 34 to feed a sheet.

FIG. 5 shows the charge eliminating means 37 and the sheet cutting means 2.
6 is a cross-sectional view showing 6 and the sheet wrinkle removing means 38, and further showing a part of the sheet conveying means 27. FIG. Static eliminator 37
At the sheet 23, as shown in FIG.
In order to remove the electric charges of the sheet and remove the electricity, the support member 39 provided at the fixed position has a plate made of an electrically insulating material, such as Bakelite, which contacts one surface of the sheet 23 (the lower surface of FIG. 6). The body 40 is fixed. Support member 3
9 is made of a material such as iron and is grounded. A contact member 41 for contacting the other surface of the sheet 23 (upper surface of FIG. 6) is provided. The contact member 41 is for elastically pressing the sheet 23 against the plate-like body 40, and is made of electrically insulating fiber, for example, inorganic fiber such as cotton or wool. Thickness d of this contact member 41
1 is, for example, 10 mm, and its length L1 is, for example, 50 mm. As shown in FIGS. 4 to 6, the base end portion of the contact member 41 is fixed to the support piece 43, and the support piece 43 is angularly displaced and driven by the lever 45, and the lever 45 is driven.
Is angularly driven by a double-acting cylinder 44, which causes the contact member 41 to be displaced upward, so that the sheet 23 is moved to the plate-like body 4.
It is possible to easily interpose between 0 and the contact member 41. The contact member 41 also serves to remove wrinkles from the sheet 23 between the contact member 41 and the plate member 40.

The sheet cutting means 26 is provided with a pair of pinch rolls 47 and 48 for nipping and conveying the sheet 23 from which the electricity has been removed by the electricity removing means 37 and from which the wrinkle has been removed from the wrinkle removing means 38. The roll 47 has a motor 49
The rotation speed of the roll 47, and thus the supply length of the sheet 23, is controlled by the sheet length detecting means 5.
Counted by 0. The roll 47 has, for example, a hardness of 90.
Of urethane rubber, and the roll 48 is made of neoprene rubber having a hardness of 70.

The roll 47 is supported by a support roll 93 (see FIGS. 5 and 8), which causes the roll 4 to roll.
Bending of 7,48 is prevented.

FIG. 7 is a sectional view around the rolls 47 and 48, and FIG. 8 is a front view of the rolls 47 and 48 as seen from the sheet entrance side. The maximum width of the seat 23 is indicated by the reference symbol L2, and the seat 23 is located at the center position 52 (see FIG. 8) in the width direction of the seat passage 51.
The widthwise central positions of 3 are aligned and are conveyed. Air bleeding grooves 53; 54, 56 are formed in the rolls 47, 48 symmetrically with respect to the central position 52. Nozzle members 59, 60 having nozzles 57, 58 for injecting compressed air to both upper and lower surfaces of the sheet 23 are provided in the passage 51a on the downstream side of the sheet 23 with respect to the rolls 47, 48.
Are placed. The nozzles 57 and 58 are formed so as to be inclined so as to be on the upstream side in the transport direction as they approach the sheet 23. In the air chambers 61 and 62 of the nozzle members 59 and 60,
Compressed air is supplied, and the compressed air is jetted from the nozzles 57 and 58 at a uniform flow rate in the width direction of the sheet 23. The nozzles 57 and 58 are formed so as to extend in the direction perpendicular to the paper surface of FIG. 7 over the entire width of the rolls 47 and 48, as indicated by reference numeral L3 in FIG. The sheet 23 sandwiched by the rolls 47 and 48 is conveyed in the air by the compressed air ejected from the nozzles 57 and 58. Groove 53; 5
Guide pieces 64 and 65 for guiding the seat 23 are provided on the sheets 4 and 56.
The guide member 64, 65 is inserted into the nozzle member 59,
60 in a row. Thereby, the sheet 23 can be stably guided and conveyed by the compressed air from the nozzles 57 and 58. On the downstream side of the nozzles 57 and 58, a guide member 66 is arranged below the sheet passage 51, and a support member 67 is arranged above. The guide member 66 and the support member 67 are made of a material such as bakelite. In order to cut the sheet 23 passing through this passage 51a, the passage 5
A cutting blade 68 is provided to face 1a.

FIG. 9 is a perspective view of the cutting blade 68, and FIG.
FIG. 10 is a cross-sectional view of the cutting blade 68 as seen from the cutting plane line XX in FIG. 9. The cutting blade 68 extends over the width direction of the sheet 23 and over the maximum width L2 of the sheet 23 shown in FIG. The cutting blade 68 is configured by repeating a plurality of crest edges 69 and a plurality of trough edges 70 in the width direction of the sheet (left and right direction in FIG. 9).
As shown in, it has a sharp single-edged blade. This cutting blade 6
When 8 is projected into the passage 51a by the link mechanism 72, the cutting blade 68 is guided along the guide member 66, the cutting edges 69 and 70 of the cutting blade 68 break through the sheet 23, and the sheet 23 is cut. The sheet 23 is supported by the support member 67, and thus the cutting blade 68 cuts the sheet 23.

FIG. 11 is a simplified sectional view showing the structure of the link mechanism 72. The link mechanism 72 is supported by a base 74 of the sheet cutting means 26. The cutting blade 68 is
It is guided by the guide means 75 toward the seat passage 51a. The first links 76 and 77 are arranged at intervals along the width direction of the seat 23 (left-right direction in FIG. 11),
One ends thereof are pin-connected to the cutting blade 68 by pins 78 and 79, respectively. Third and fourth links 8
0 and 81 are arranged at intervals along the width direction of the seat 23, and the pins 8 are attached to the base 74 whose one end is a fixed position.
2, 83 are pin-coupled respectively. In the double-acting cylinder 84 driven by air pressure, the piston rod 87 fixed to the piston 86 projects in both axial directions of the cylinder 84 (both left and right directions in FIG. 11). One end of the piston rod 87 of the double-acting cylinder 84 is pin-coupled to the other ends of the first and third links 76, 80 by a pin 88. The other end of the piston rod 87 is pin-coupled to each end of the second and fourth links 77, 81 by a pin 89. Pins 78, 79, 82, 83, 88, 8
The axes of 9 are parallel to each other, and the cutting blade 68, the double-acting cylinder 84, and the base 74 form two parallelogram links at the top and bottom.

FIG. 12 is an enlarged sectional view of the vicinity of the double-acting cylinder 84. The double-acting cylinder 84 has a pair of trunnion shafts 90 extending perpendicularly to the axis of the cylinder 84.
The trunnion shaft 90 is fitted into a vertically extending support groove 92 of a bracket 91 that is erected on the base 74. Therefore, the cylinder 84 has its axial direction (see FIG.
1 and the lateral direction of FIG. 12) are prevented. Further, the cylinder 84 has the axial direction and the pin 7
Displacement in the vertical direction (vertical direction in FIGS. 11 and 12) with respect to the axial direction of 8, 79, 82, 83, 88, 89 is allowed.

A two-position electromagnetic switching valve 96 is connected to the double-acting cylinder 84 via flexible tubes 94 and 95, and compressed air is supplied by switching from a compressed air supply source 97 to two chambers of the double-acting cylinder 84. To be done.

In the state shown in FIG. 11, the double-acting cylinder 84
11, the piston rod 87 is displaced to the right in FIG. 11 and is in a stopped state, at which time the cutting blade 68 is descending,
It is retracted from the passage 51a of the seat 23. Seat 23
When is to be cut off, the processing circuit 33 sends a command signal for switching the position of the solenoid valve 96. As a result, compressed air is supplied to the cylinder chamber on the right side of the double-acting cylinder 84, and the links 76, 77; 80, 81 are in a resting state shown by phantom lines 98, 99 in FIG. Link 76,
77; 80 and 81 are piston rods 87 of the double-acting cylinder 84
When the cutting blade 68 is angularly displaced by the displacement in one direction, the cutting blade 68 is guided by the guide means 75 and immediately retracts after protruding into the passage 51a of the sheet 23. In this way, the piston rod 87 of the double-acting cylinder 84 is displaced in one direction (leftward in FIG. 11), driving the cutting blade 68 and moving the seat 23.
Therefore, the cutting can be performed while the sheet 23 is being conveyed. With the compressed air being supplied to the cylinder chamber on the right side of the double-acting cylinder 84, the solenoid valve 96 is used to disconnect the seat 23 again.
11, the piston rod 87 is displaced in the other direction (rightward in FIG. 11) to return to the state in FIG. 11, and at this time, the cutting blade 68 also moves to the passage 51a of the sheet 23. The sheet 23 which is retracted as soon as it is projected and is conveyed in this manner can be instantly pierced and cut with the help of a sharp single-edged blade as shown in FIGS. 9 to 10.

The sheet 23 supplied to the cutting means 26 is
Since the charge removing means 37 has previously removed the charge, the compressed air ejected from the nozzles 57 and 58 causes the passage 51 to pass through.
The sheet can be stably conveyed and run in the inside of a, and thus the cutting blade 68 can accurately cut the sheet 23.

Sheet cutting means 26 and sheet conveying means 27
Between the wrinkle removing means 3 of the sheet 23 described above.
Unlike FIG. 8, wrinkle removing means 38a for the sheet 31 of which at least the leading end is cut is provided. In the following description, instead of the belt-shaped sheet 23, at least only the front end portion or the front and rear end portions of the cut sheet 31 will be described. In this wrinkle removing means 38a, as shown clearly in FIG. 7, a right cylindrical support roll 101 made of a material such as iron is arranged, and a brush roll 102 is arranged opposite to this support roll 101. .. The roll 101 supports one surface (the lower surface in FIG. 7) of the sheet 31, and the brush roller 102 contacts the other surface of the sheet 31, that is, the upper surface. At the upstream side of the rolls 101 and 102 in the passage 51a of the sheet 31, the sheet cutting means 2
6, a guide member 103 for guiding the seat 23,
104 is arranged.

FIG. 13 is a partially cutaway sectional view of the brush roll 102. In this brush roll 102, a brush 106 is spirally wound around an outer peripheral portion of a shaft 105 made of a material such as a right columnar iron as shown in FIG. The brush 106 extends from the central position 52 of the passage 51 a of the seat 31 to both sides thereof, and the brush tip portion 107 of the brush 106.
Are spirally wound in opposite directions from the central position 52 so that they contact the sheet 31. The direction in which the brush roll 102 is driven to rotate is indicated by reference numeral 108, and the feeding direction of the sheet 31 is indicated by reference numeral 109, so that the sheet 31 is supported by the roll 101 and is in contact with the brush roll 102. As a result, a force is exerted on the sheet 31 to extend it toward both ends in the width direction, so that the wrinkles of the sheet 31 are removed.

The brush 10 constituting the brush roll 102
6 includes a large number of fibers 110, a wire member 111 that bends and supports the center of the fibers 110, and a metal holding member 112 that holds the fibers 110 from both sides. Fiber 11
Zero may consist of, for example, nylon, polyethylene, horsehair, and the like. Especially, horse hair does not generate static electricity,
Therefore, the sheet 31 can be reliably conveyed to the sheet conveying means 27, which is convenient. Wrinkle removing means 3
The sheet 31 from 8a is guided to the conveyance means 27, and is adsorbed and conveyed by the endless belt 113 by the vacuum adsorption force and the electrostatic force.

FIG. 15 is a simplified perspective view of the sheet conveying means 27, and FIG. 16 is the sheet conveying means 27 of FIG.
5 is a simplified sectional view taken along the line V-V in FIG. The conveyor belt 113 is made of an electrically insulating material, for example, a material such as rubber, and conveys the sheet 31 thereon, and a plurality of suction holes 114 are formed in rows along the sheet conveying direction 28. .. This conveyor belt 113
The sheet conveying portion 115, that is, the suction casing 117 having the opening portion 116 that opens toward the upper stretched portion of FIGS. 15 and 16 is provided at the fixed position. The suction casing 117 has a suction chamber 118 communicating with the opening 116, the connecting portion 119 is connected to the fan 120, and thus the suction chamber 118 has a negative pressure. The opening 116 is formed so as to be elongated along the sheet conveying direction 28, and the suction hole 114 in the sheet conveying portion 115 of the conveying belt 113 faces the opening 116. As a result, the sheet 31 from the wrinkle removing unit 38a is vacuum-sucked and transported on the surface of the sheet transporting portion 115 of the transport belt 113.

Further, in the sheet conveying means 27, a charging means 122 is provided on the upstream side of the conveying belt 113, and the corona discharge generated here charges the sheet 31 and the conveying belt 113. Therefore, sheet 31
And the conveyor belt 113 are attracted to each other by electrostatic force, and thus the sheet 31 is also attracted to the surface of the sheet conveyor portion 115 of the conveyor belt 113 by electrostatic force as described above.
Therefore, it is possible to prevent the position of the sheet 31 whose front end portion is cut off from being displaced or the posture of the sheet 31 to be distorted when the rear end portion is cut off while the sheet 31 is being conveyed by the conveyance belt 113. Conveyor belt 113
Is stretched between one roll 126, which is rotatably driven by the power from the motor 124 being transmitted through the clutch 125, and the other roll 127. In the suction casing 117, the roll 127 is arranged on the upstream side by the distance L4 in FIG. The distance L4 is 200 mm, for example. The thickness of the conveyor belt 113 is, for example, about 1 to 10 mm.
And the suction chamber 118 is, for example, −20 to −40 mmA.
About q is sucked.

The static eliminating means 1 is provided on the downstream side of the sheet conveying means 27.
29 is provided, thereby removing the electric charge of the sheet 31 on the surface of the conveyor belt 113 and the sheet conveying portion 115 thereof. The charge removing unit 129 may have a configuration of performing a corona discharge having a polarity opposite to that of the above-described charging unit 122, for example. A guide plate 130 is provided further downstream than the charge removing unit 129 in the transport direction 28,
As a result, the sheet 3 separated from the conveyor belt 113
The lower surface of 1 is supported and guided.

FIG. 17 is a sectional view showing the superposing means 29 and its vicinity. The metal plate 30 is the belt conveyor 1
8 and is guided to a support roll 131 that supports and transports the metal plate 30. The support roll 131 is
It is driven to rotate in the direction of arrow 132, and its surface is made of a material such as polyurethane. A brush roll 133 is arranged so as to face the support roll 131. The brush roll 133 is rotationally driven in the direction of arrow 134. The brush roll 133 has a large number of brushes 13 that extend radially.
5, the fibers of this brush 135 are made of materials such as nylon, polyethylene and horsehair. The brush roll 133 elastically presses the sheet 31 guided by the guide plate 130 against the upper surface of the metal plate 30 supported and guided by the support roll 131. Figure 1
In relation to the belt conveyor 18 as shown in FIG.
A metal plate detecting means 136 is provided for detecting the leading edge of 0, and a sheet detecting means 137 for detecting the leading edge of the sheet 31 is provided upstream of the superposing means 29.

A pair of pinch rolls 138 and 139 is provided downstream of the superposing means 29. These pinch rolls 138 and 139 are made of a material such as urethane, one pinch roll 138 is rotatably provided at a fixed position, and the other pinch roll 139 is vertically displaced by a double-acting pneumatic cylinder 140. The charging means 141 is provided on the downstream side of the pinch rolls 138 and 139, whereby the sheet 3 that has been accurately stacked and cut on the upper surface of the metal plate 30 as shown in FIG.
1 is charged and brought into close contact, and further conveyed by the belt conveyor 32. The detection means 142 detects the metal plate 30. The pinch rolls 138 and 139 have a function of preventing wrinkles from being generated in the sheet 31 superposed on the upper surface of the metal plate 30. The distance L5 between the pinch roll 139 and the detection means 142 may be 300 mm, for example.

The overall operation will be described with reference to FIG. 3 again. Moving from step a1 to step a2, the cutting means 1
The metal strip 14 is cut according to 6, and the surface of the metal plate 30 after cutting is inspected in the inspection step 17. The cutting command or the cutting detection signal of the metal band 14 by the cutting means 16 is given to the processing circuit 33, whereby the clutch 125 of the sheet conveying means 27 is turned on, so that the conveying belt 113 is conveyed by the conveyor belt of the belt conveyor 18. Two
The sheet 31 travels at the same speed as 0, and the sheet 31 moves
3 is attracted to the sheet 3 by vacuum suction force and electrostatic force and conveyed, and thereafter, the electricity is removed by the electricity removing unit 129, and the leading end portion of the sheet 31 is delivered by the sheet detecting unit 137.
When detected in step a4, in step a5
The clutch 125 is turned off. As a result, the transport belt 113 is stopped, and the sheet 31 is stopped in a state where the leading edge of the sheet 31 is detected by the sheet detection unit 137 and enters a standby state.

Then, in step a6, the metal plate 30
When the leading end of is detected by the metal plate detecting means 136, the timer in the processing circuit 33 starts the time-keeping operation in step a7. This timer has a time T1 required to convey a distance L6 from when the leading end of the metal plate 30 is detected by the metal plate detecting means 136 to when the leading end of the metal plate 30 reaches the position of the sheet detecting means 137. Is. When it is determined in step a8 that this time T1 has elapsed, the clutch 125 of the sheet conveying means 27 is turned on in step a9, whereby the sheet 31 together with the metal plate 30 is supplied to the superposing means 29, and the metal sheet 30 is supplied. The sheet 31 is superposed on the upper surface of the plate 30 and conveyed. In step a9, the sheet length detecting means 5
The length of the sheet 31 is detected by 0, and in step a10, it is determined in step a12 to be described later whether or not the length of the sheet 31 matches the length of the metal plate 30 that is preliminarily changeably input to the processing circuit 33 and is set. It Step a
When the leading end of the metal plate 30 or the sheet 31 is detected by the detecting means 142 arranged on the upstream side of the belt conveyor 32 in step 10, in step a11, the cylinder 1
The upper pinch roll 139 is lifted by 40, thereby preventing the sheet 31 on the upper surface of the metal plate 30 from wrinkling. When it is determined in step a12 that the length of the sheet 31 conveyed by the sheet conveying means 27 matches the preset length of the metal plate 30, the process proceeds to step a13 and the sheet cutting means 26 performs the sheet operation. The rear end of 31 is disconnected, and the clutch 125
Is cut and the conveyor belt 113 is stopped.

When it is determined in step a14 that the rear end of the metal plate 30 or the sheet 31 on the metal plate 30 is detected by the detecting means 142, in step a15, the pinch roll 139 is lowered by the cylinder 140, and the succeeding metal plate 30 is detected. The sheet 31 and the sheet 31 can be pressed. Thus, in step a16, a series of operations ends.

In the present invention, in addition to kraft paper as a sheet, a protective film (Safty Protective Vinyl, abbreviated to SPV),
A polyethylene sheet, a nylon sheet, or the like can be used, and other sheets can also be used.

Although the link mechanism 72 has a structure having two parallelogram links in the above-described embodiment, it may have a structure other than that.

[0049]

As described above, according to the present invention, for example, a coil-shaped continuous sheet is cut by sheet cutting means on a metal plate obtained by cutting a coil-shaped continuous metal strip into a predetermined length. Then, the leading end of this sheet is made to correspond to the leading end of the metal plate, and the sheet is placed on the upper surface of the metal plate as described above, and the sheet cutting means corresponds to the length of the metal plate. Since it is operated, the sheets can be accurately and reliably stacked on the upper surface of the metal plate, there is no risk of the metal plates breaking when stacked and packed via the sheet, and the sheet is made of metal. There is no risk of peeling or deviation from the plate, and even if the size of the metal plate, that is, the length changes, the sheets are cut and overlapped in an appropriate manner corresponding to the length of the metal plate. It becomes possible way.

Further, according to the present invention, the metal plate is supported by the supporting roll, and the sheet conveyed by the conveying means is pressed by the brush roll and superposed on the upper surface of the metal plate supported by the supporting roll. As a result, air is present between the metal plate and the sheet to cause wrinkles in the sheet and reduce the commercial value of the metal plate product. Disappear.

Further, according to the present invention, in the sheet conveying means, the sheet is vacuum-adsorbed on the endless conveying belt and is adsorbed by the electrostatic force by the charging means, so that the sheet is conveyed on the conveying belt. The sheet is prevented from having an undesired position and posture, and the sheet can be accurately stacked on the metal plate.

Further, according to the present invention, since the sheet conveyed by the conveyor belt is destaticized, it is guided to the metal plate by the guide plate, so that the sheet is smoothly peeled off from the conveyor belt. Therefore, the sheet can be accurately overlapped on the metal plate.

Further, according to the present invention, in order to enable the sheet to be cut accurately by the sheet cutting means, a charge removing means is provided upstream of the sheet cutting means,
The charge removing means elastically presses a contact member made of an electrically insulating fiber such as a carpet against the other surface of the sheet while supporting one surface of the sheet with an electrically insulating plate such as bakelite. The electric charge of the sheet can be removed, and the sheet can be cut accurately by the sheet cutting means.

Further, in the present invention, a sheet wrinkle removing means is provided between the sheet cutting means and the sheet conveying means,
When the widthwise central position of the sheet is conveyed to coincide with the widthwise central position of the sheet passage, the brush roll exerts a force on the sheet so that the sheet is stretched to both sides from the widthwise central position. The sheet can be conveyed to the sheet conveying means without wrinkling while remaining flat.

Further, according to the present invention, it becomes possible to sufficiently inspect all the metal plates before the sheets are superposed on the upper surface of the cut metal plates, and the sampling inspection is performed as in the conventional case. Not only is the metal plate or sheet scratched or soiled when the interleaving paper is peeled off from the upper surface of the plate, but it also eliminates all the problems of causing wrinkles on the sheet and making it difficult to accurately stack the sheets again. Therefore, there is no problem at all that the workability and safety associated with the sampling inspection are extremely poor.

[Brief description of drawings]

FIG. 1 is a system diagram showing an overall configuration of the present invention.

FIG. 2 is a plan view showing a state in which a sheet 31 is superposed on a metal plate 30.

FIG. 3 is a flowchart for explaining the operation of the embodiment of the present invention.

FIG. 4 is a diagram illustrating a sheet feeding device 25 including sheet cutting means 26,
FIG. 6 is a cross-sectional view showing a sheet conveying unit 27, an overlapping unit 29, and the like.

5 is a sectional view showing a sheet cutting means 26, a wrinkle removing means 38, and a sheet conveying means 27. FIG.

FIG. 6 is an enlarged cross-sectional view of a static eliminator 37.

FIG. 7: Sheet cutting means 26 and wrinkle removing means 38a
It is sectional drawing which shows.

FIG. 8: Rolls 47, 48 in the sheet cutting means 26
FIG. 4 is a cross-sectional view of the sheet as viewed from the sheet entrance side.

9 is a perspective view showing a cutting blade 68. FIG.

10 is a cross-sectional view taken along the section line XX of FIG.

11 is a sectional view showing a simplified link mechanism 72 of the sheet cutting means 28. FIG.

12 is a cross-sectional view showing a double-acting cylinder 84 used in the link mechanism 72. FIG.

FIG. 13 is a partially cutaway sectional view of a brush roll 102 used in wrinkle removing means 38a.

FIG. 14 is a partial cross-sectional view of the brush roll 102.

FIG. 15 is a perspective view showing a sheet conveying unit 27.

16 is a cross-sectional view of the sheet conveying means 27 as seen from a section line VV in FIG.

FIG. 17 is a sectional view showing a superposing means 29.

FIG. 18 is a simplified system diagram illustrating certain prior art.

FIG. 19 is a cross-sectional view of another prior art.

20 is a cross-sectional view of a portion of the prior art shown in FIG.

FIG. 21 is a cross-sectional view of the prior art shown in FIGS. 19 and 20.

22 is a cross-sectional view of the prior art shown in FIGS. 19-21.

[Description of Reference Signs] 14 metal band 16 metal band cutting means 17 inspection step 18, 32 belt conveyor 22 stacking device 23 band-shaped sheet 25 sheet feeding device 26 sheet cutting means 27 sheet conveying means 29 stacking means 30 metal plate 31 tip part Sheets cut only at the leading or trailing end 37 Static eliminator 38, 38a Wrinkle remover 40 Plate 41 Contact member 47, 48 Pinch roll 50 Sheet length detector 51, 51a Sheet passage 57, 58 Nozzle 59, 60 Nozzle member 66 Guide member 67 Supporting member 68 Cutting blade 69 Mountain blade edge 70 Valley blade edge 72 Link mechanism 74 Base 75 Guide means 76 1st link 77 2nd link 80 3rd link 81 4th link 84 Double acting cylinder 86 Piston 87 Piston Rod 90 Trunnion shaft 91 Bracket 91 101 Support Roll 102 Brush Roll 106 Brush 113 Conveyor Belt 117 Suction Casing 118 Suction Chambers 122, 141 Charging Means 129 Electrifying Means 131 Support Rolls 133 Brush Rolls

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Claims (6)

[Claims] 1. A device for cutting a continuous metal strip into a predetermined length and stacking a sheet on the cut metal plate, a unit for cutting the continuous sheet, and a sheet from the sheet cutting unit. A means for transporting the sheet, a means for superimposing the sheet on the metal plate with the leading edge of the sheet fed from the sheet transporting means corresponding to the leading edge of the sheet to be cut and transported, and the sheet from the sheet cutting means. And a control means for operating the sheet cutting means so that the sheet has a length corresponding to the metal plate in response to the output from the length detecting means. A device for stacking sheets on a metal plate. 2. The superposing means includes a support roll that supports and conveys the metal plate, and a brush roll that is arranged so as to face the support roll and presses the sheet onto the metal plate. Item 1
A device for stacking a sheet on a metal plate as described above. 3. The sheet conveying means has an endless conveying belt on which a sheet is placed and conveyed to form a plurality of suction holes, and an opening portion opened toward a sheet conveying portion of the conveying belt. The suction casing having a pressure suction chamber, and a charging unit that is disposed on the upstream side of the conveyor belt and that is electrically charged so as to adsorb the sheet to the conveyor belt by electrostatic force. Sheet overlay device on metal plate. 4. The sheet conveying means is further arranged on the downstream side of the conveying belt, and is configured to remove electricity from the sheet on the conveying belt. Further, the sheet conveying means is arranged further downstream in the conveying direction than the discharging means. The sheet stacking device for a metal plate according to claim 3, further comprising a guide plate that guides the sheet separated from the sheet. 5. A static eliminator for static eliminating the sheet is provided on the upstream side of the sheet cutting means, and the static eliminator is in contact with one surface of the sheet and an electrically insulating plate-like body. 2. The sheet stacking device for a metal plate according to claim 1, further comprising a contact member made of an electrically insulating fiber for elastically pressing the sheet against the plate-like body. 6. A wrinkle removing means for a sheet is provided between the sheet cutting means and the sheet conveying means, and the wrinkle removing means for the sheet is opposed to the member supporting one surface of the sheet and the other surface of the sheet. And a brush roll configured such that the brushes are wound in opposite directions from the central position so that the brush tip portions come in contact with both sides from the central position in the width direction of the sheet passage. The sheet stacking device for a metal plate according to claim 1, wherein: