JPH09301558A - Sheet material suction holding method and apparatus - Google Patents

Abstract

(57) An object of the present invention is to provide a sheet material suction holding method and device capable of sucking and holding a sheet material and easily separating the held sheet material from the next layer sheet material. In a method of sucking and holding stacked sheet materials, a process of bringing an sucking member close to a stacked sheet material and before the sucking member reaches the uppermost sheet material of the stacked sheet materials. A method for suction-holding a sheet material, comprising: a step of starting suction of the suction member; and a step of holding the sheet material by suction with the suction member.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used in a sheet material feeding device for feeding sheet materials to a sheet material processing device, and sequentially adsorbs and holds stacked sheet materials to the sheet material processing device. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet material adsorption holding method and apparatus suitable for supplying the sheet material.

[0002]

2. Description of the Related Art FIG. 9 is a schematic view showing a conventional sheet material feeding device, and FIGS. 8 and 10 are explanatory views showing a suction state of a conventional suction pad.

Conventionally, in the case of continuously processing a sheet material such as a thin metal plate, the sheet supply side of the sheet material processing apparatus is shown in FIG.
An unprocessed sheet feeding mechanism such as the above is provided.

In the sheet supply unit shown in FIG. 9, unprocessed sheet material P is stacked in the unprocessed sheet material storage section 11. A suction pad 12 is disposed above the untreated sheet material storage unit 11. The pad 12 is driven by the movable cylinder 13 and sucks and lifts the sheet material P. Here, an attempt is made to separate the sheet material by ejecting air toward the end portion of the sheet material P from an air nozzle 15 installed near the sheet material storage portion. The lifted sheet material P is conveyed to the entrance of the sheet material processing apparatus 16 by the conveying means 14, and then transferred to the entrance roller 17 of the sheet material processing apparatus and taken into the apparatus, where appropriate processing is performed. .

[0005]

The sheet material feeding method as shown in FIG. 9 has a problem that the sheet material is fed without being reliably separated. Further, as shown in FIG. 10, there is known a method in which a pressing member 16 is provided and a sheet material is deformed and separated. However, in the case where a suction pad is pressed against a laminated thin sheet material for adsorption, As shown in FIG. 8, the adsorbed sheet material may form an adsorption recess indicated by B and may be lifted up to the sheet material of the next layer. Furthermore, the method for separating thin sheet materials is described in FIG.
As described above, it is common to use a means for blowing compressed air to the edge of the sheet material, but the amount of air consumed is large, which also causes a hindrance to continuous processing.

The object of the present invention was made in view of the above-mentioned problems, and a sheet capable of adsorbing and holding a sheet material on an adsorbing member and easily separating the held sheet material from the sheet material of the next layer. An object is to provide a method for adsorbing and holding a material and an apparatus therefor.

[0007]

The present invention has the following configuration in order to achieve the above object. That is, (1) in the method of sucking and holding the stacked sheet materials on the suction member, the step of bringing the suction member closer to the stacked sheet material and the suction member on the uppermost sheet material of the stacked sheet materials. A suction holding method for a sheet material, comprising a step of starting suction of the suction member before the arrival and a step of holding the sheet material by the suction member.

(2) In the method of adsorbing and holding the laminated sheet materials on the adsorbing member, a process of bringing at least two adsorbing members close to the laminated sheet material, and a sheet material of the uppermost layer of the laminated sheet materials. And a step of starting suction of at least one suction member of the at least two suction members before the at least two suction members arrive.

(3) In the method of sucking and holding the stacked sheet materials on the suction member, the process of bringing at least two suction members close to the stacked sheet material, and the uppermost sheet material of the stacked sheet materials. A step of starting suction of at least one suction member of the at least two suction members before the at least two suction members reach the sheet, and lifting the sheet material suction-held by the at least one suction member. A method of attracting and holding a sheet material, comprising: a step of bending the material.

(4) In the process of bringing at least two suction members closer to the laminated sheet material, the arrival time of at least one suction member to the sheet material and the arrival time of another suction member to the sheet material are made different. (2) characterized by
Alternatively, the method for adsorbing and holding a sheet material according to (3).

(5) In the method of sucking and holding the stacked sheet materials on the suction member, at least one suction member reaches the sheet material in the process of bringing at least two suction members close to the stacked sheet material. A method for sucking and holding a sheet material, wherein the time and the arrival time of another suction member to the sheet material are different.

(6) In a device for adsorbing and holding the stacked sheet materials on an adsorbing member, at least two adsorbing members for adsorbing and holding the sheet materials and at least two adsorbing members can be individually driven and stacked. A sheet material suction-holding device comprising: a suction member movable mechanism that can be moved toward and away from a placed sheet material and a suction mechanism of the suction member.

(7) The sheet material suction-holding device according to (6), wherein at least one of the suction members that suction-holds the sheet material is a bellows type suction member.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail based on embodiments shown in the drawings.

Embodiment 1 FIG. 1 is a schematic view showing an embodiment of a sheet material suction holding device according to the present invention.

In the figure, reference numeral 1 is a sheet material feeding device,
The sheet material processing apparatus 10 is installed on the downstream side.
The sheet material supply device 1 includes a sheet material suction unit 2, a sheet material storage base 9 and a transport system 6.

The sheet suction portion 2 is positioned above the sheet material P stacked on the sheet material storage base 9, and the air cylinder 3
Adsorption pads 5 attached to the tips of a and 3b, respectively.
A and 5b are individually slidably attached to the laminated sheet materials P in the vertical direction.

The driving speeds of the air cylinders 3a and 3b can be individually adjusted by driving speed controllers 4a and 4b. Further, the suction pads 5 a and 5 b are connected to the suction pump 7. A vacuum switch 8 is attached between the suction pump 7 and the suction pads 5a and 5b. Furthermore, the transport system 6 is a mechanism that reciprocates between the sheet material processing device 10 and the sheet material storage base 9. The sheet material storage base 9 is preferably one that can be stacked diagonally in consideration of the installation space and the like, but it may be one that is stacked horizontally, and in the description of the present embodiment, it will be described as one that is stacked horizontally. Further, if it is necessary to reverse the sheet material, it is preferable to have a mechanism in which the arm 6a of the transport system 6 swings and deploys.

Next, the operation of the sheet material feeding device 1 will be described with reference to FIGS.
This will be described with reference to FIG.

FIG. 2 is an explanatory view showing the state of the sheet material adsorbed according to the present invention, and FIGS. 3 and 4 are explanatory diagrams showing the sheet material holding state of the sheet material adsorbing portion.

As shown in FIGS. 3 and 4, in the sheet material adsorbing portion 2 positioned above the sheet material P stacked on the sheet material accommodating base 9, the air cylinders 3a and 3b are driven to adsorb the tip end. The pads 5a and 5b start approaching toward the sheet material P. Here, before the suction pads 5a, 5b reach the uppermost sheet material P, the suction pump 7 is driven to bring the suction pads 5a, 5b into a suction state. Immediately before the suction pads 5a and 5b approaching the uppermost sheet material P reach the uppermost sheet material P, the suction pads 5 in the suction state
The uppermost sheet material P is lifted by the suction airflow A generated in the vicinity of a and 5b and is adsorbed to the adsorption pads 5a and 5b. At this time, since the vacuum switch 8 can judge whether or not the sheet is adsorbed, if the controller 8a judges the signal of the vacuum switch 8 and the driving of the air cylinders 3a, 3b is stopped, as shown in FIG. The sheet material P can be held at a position slightly separated from the lower layer sheet material P. Further, the suction pad 5a holding the sheet material P can be lifted by contraction of the air cylinder 3a, and the uppermost sheet material P can be separated from the lower sheet material P. Further, if the suction pads 3a and 3b are provided at positions where the end portions of the laminated sheet material P are suction-held, the separation performance of the sheet material is further improved.

Next, the air cylinders 3a, 3b contract most, the sheet material P is completely separated from the sheet material P of the next layer, and the sheet material P sucked and held by the suction pads 5a, 5b is conveyed by the conveying system 6. Sheet material processing device 10
It is carried to and processed appropriately.

According to the above-described embodiment of the present invention, the suction member is brought closer to one of the uppermost layers of the stacked sheet materials, and suction is performed before the suction member reaches the uppermost layer of the sheet materials. Since the uppermost sheet material is lifted and held by suction before the operation is started (the suction mechanism is activated) and the suction member reaches the uppermost layer of the sheet material, the sheet material can be easily separated. In addition, since the uppermost sheet material that is suction-held can be curved, the sheet material can be further easily separated.

Second Embodiment In the device configuration of the above first embodiment, the following configuration is adopted in the second embodiment in order to more preferably separate the sheet material.

The drive speed of the air cylinder 3a is set lower than that of the air cylinder 3b by using the drive speed adjusters 4a and 4b, and the suction pad 5a is a bellows type pad.

Hereinafter, the operation of the sheet material suction portion 2 when this structure is used will be described with reference to FIGS. 1 and 5 to 7.

FIG. 5 is an operation explanatory view of the sheet material adsorbing portion in the second embodiment according to the present invention, and FIG. 6 is a second embodiment.
Explanatory drawing of the primary sheet separation state of the sheet material adsorption section in FIG.
FIG. 7 is an explanatory view of the secondary sheet separation state of the sheet material suction portion in the second embodiment.

Similar to the first embodiment, in the sheet material suction portion 2 positioned above the sheet material P stacked on the sheet material storage base 9, the air cylinders 3a and 3b are driven, and the suction pads 5a at the tip end, 5b starts approaching toward the sheet material P. Here, before the suction pads 5a, 5b reach the uppermost sheet material P, the suction pump 7 is driven to bring the suction pads 5a, 5b into a suction state.

Since the drive speed of the air cylinder 3a is slower than that of the air cylinder 3b, the suction pad 5a approaches the uppermost sheet material P after the suction pad 5b reaches the uppermost sheet material P. Become. Here, the air cylinder 3a to which the suction pad 5a is attached may start driving after the suction pad 5b reaches the sheet material P. Immediately before the suction pad 5a gradually approaching the uppermost sheet material P reaches the uppermost sheet material P, the suction airflow as shown in FIG. The sheet material P is lifted by itself, and the uppermost sheet material P is separated from the lower layer sheet material P.

At this time, since the suction pad 5a is a bellows type, the uppermost sheet material P is lifted by the contraction stroke x of the bellows. Further, since one suction pad 5b reaches the sheet material P first, it is possible to lift the sheet material P with the suction pad 5b as a fulcrum, so that the sheet material P is gently curved and the sheet material of the next layer is formed. P can be separated. Here, the contraction of the bellows occurs only when the suction is surely performed, and therefore, there is an advantage that the suction failure can be avoided. Further, when the bellows type suction pad 5a is lifted on one side of the sheet material P by contraction of the air cylinder 3a, the uppermost sheet material P has two stages (x +).
Since it is subjected to the lifting operation of y), it can be completely separated from the lower layer sheet material P.

Next, the air cylinders 3a, 3b are contracted to the maximum extent to completely separate the sheet material P from the next layer sheet material P, and the sheet material P sucked and held by the suction pads 5a, 5b is conveyed by the transport system 6. Sheet material processing device 10
It is then carried to an appropriate treatment.

According to the above-described embodiment of the present invention, one of the uppermost layers of the stacked sheet materials can be adsorbed and held, and one of the uppermost layers of the sheet materials can be gently deformed and lifted. In addition, the adsorbed sheet material can be surely adsorbed and separated.

Furthermore, when adsorbing the uppermost one of the stacked sheet materials, the adsorbing member that reaches the sheet material first presses the sheet material, and the adsorbing member that arrives later lifts the sheet material. , It is possible to separate while turning the sheet material.

The present invention can be applied to sheet materials such as thin metal plates, paper, films, printing plate materials and the like.

[0035]

EFFECTS OF THE INVENTION With the above-mentioned structure, the present invention has the following excellent effects.

A) When the sheet member is sucked and held by the sucking member, the sucking member starts sucking before the sheet member reaches the sheet member, so that the sheet member separates itself without difficulty.
It can be supplied to the next step.

(B) It is possible to bend the minutely separated sheet material, separate it, and supply it to the next step. C) When the sheet material is sucked and held by at least two suction members, one of the suction members and the other suction member have different times to reach the sheet material, so that the sheet material can be curved and separated. If the bellows type suction member is used, the uppermost sheet material can be securely sucked and can be lifted and separated without difficulty.

[Brief description of drawings]

FIG. 1 is a schematic view showing an embodiment of a sheet material suction holding device according to the present invention.

FIG. 2 is an explanatory view showing a state of a suction state of a sheet material according to the present invention.

FIG. 3 is an explanatory diagram showing a sheet material holding state of a sheet material suction portion according to the first embodiment of the present invention.

FIG. 4 is an explanatory diagram showing a sheet material holding state of a sheet material suction portion in the first embodiment.

FIG. 5 is an operation explanatory view of the sheet material suction portion in the second embodiment according to the present invention.

FIG. 6 is an explanatory diagram of a primary sheet separation state of a sheet material suction portion in the second embodiment.

FIG. 7 is an explanatory view of a secondary sheet separation state of a sheet material suction portion in the second embodiment.

FIG. 8 is an explanatory diagram showing a suction state of a conventional suction pad.

FIG. 9 is a schematic view showing a conventional sheet material feeding device.

FIG. 10 is an explanatory diagram showing a suction state of a conventional suction pad.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Sheet material supply device 2 ... Sheet material adsorption | suction part 3a, 3b ... Air cylinder 4a, 4b ... Driving speed regulator 5a, 5b ... Suction pad 6 ... Conveying system 7 ... Vacuum pump 8 ... Vacuum switch 9 ... Sheet material storage stand 10 ... Sheet material processing device P ... Sheet material

Claims (7)

[Claims] 1. A method for adsorbing and holding laminated sheet materials on an adsorbing member, wherein a step of bringing the adsorbing member closer to the laminated sheet material and an adsorbing member on the uppermost sheet material of the laminated sheet material. A suction holding method for a sheet material, comprising a step of starting suction of the suction member before the arrival and a step of holding the sheet material by the suction member. 2. A method of adsorbing and holding laminated sheet materials on an adsorbing member, wherein a step of bringing at least two adsorbing members close to the laminated sheet material, and a step of forming the uppermost sheet material of the laminated sheet materials. And a step of starting suction of at least one suction member of the at least two suction members before the at least two suction members arrive. 3. A method for adsorbing and holding laminated sheet materials on an adsorbing member, wherein a step of bringing at least two adsorbing members close to the laminated sheet material, and a step of forming the uppermost sheet material of the laminated sheet materials. A step of starting suction of at least one suction member of the at least two suction members before the arrival of the at least two suction members;
And a step of curving the sheet material by lifting the sheet material that has been suction-held by at least one suction member. 4. In the process of approaching at least two suction members to a laminated sheet material, the arrival time of at least one suction member to the sheet material and the arrival time of another suction member to the sheet material are made different. Claim 2 or 3 characterized
The method for adsorbing and holding a sheet material as described in. 5. A method for adsorbing and holding stacked sheet materials on an adsorbing member, wherein the arrival time of at least one adsorbing member to the sheet material in the process of bringing at least two adsorbing members closer to the laminated sheet material. And a suction holding method for a sheet material, wherein the arrival time of the other suction member to the sheet material is different. 6. An apparatus for adsorbing and holding stacked sheet materials on an adsorbing member, wherein at least two adsorbing members for adsorbing and holding sheet materials and at least two adsorbing members can be individually driven. A suction and holding device for a sheet material, comprising: a suction member moving mechanism capable of moving toward and away from the formed sheet material; and a suction mechanism of the suction member. 7. The sheet material suction-holding device according to claim 6, wherein at least one of the suction member holding the sheet material by suction is a bellows type suction member.