JP2015066666A - Suction cylinder device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a suction cylinder device which can take out a sheet-like material that is stacked one sheet by one sheet certainly and transport it.SOLUTION: At an under surface of a suction head 40 lifted by an air cylinder 10, provided are suction pads 50 each of which has flexibility to suck a sheet-like material Sby a given suction force, and protruding tools 60 each of which is provided together with the suction pad 50 an under end of each of which is made to protrude below an under end of the suction pad 50 when the suction pad 50 sucks the sheet-like material Sand a suction portion is lifted upward. Under a condition that the suction pads 50 suck the sheet-like material S, bending and curving is generated in the sheet-like materials Sbecause of a height difference between the suction pads 50 and under ends of the protruding tools 60, and an air layer is formed between the sheet-like material Sand the next sheet-like material S, to put the sheet-like material Sinto a delamination state.

Description

  The present invention relates to a suction cylinder device that sucks and conveys a sheet-like material such as paper.

  Conventionally, a suction cylinder device described in Patent Document 1 is known as a suction cylinder device in which stacked sheet-like materials such as paper are sucked one by one from the top and taken out upward.

  In the suction cylinder device, a piston is slidably incorporated in the cylinder, and a suction pad is attached to a lower end portion of a cylindrical piston rod provided on the lower surface of the piston and slidably penetrating the rod cover. The ejector passage is communicated with the lower chamber formed below the piston, the suction force is applied to the lower chamber by supplying compressed air to the ejector passage, the piston and the piston rod are lowered, and the suction pads are stacked. When it comes into contact with the upper surface of the sheet-like material, the sheet-like material is adsorbed and simultaneously raised and taken out upward.

Japanese Utility Model Publication No.54-1874

  By the way, in the above suction cylinder device, since the suction pad for sucking the sheet-like material simply moves up and down by a predetermined stroke, if the stacked sheet-like materials are in close contact with each other or are adsorbed by static electricity, the sheet There are cases where a plurality of sheets are taken out in a state of being overlapped, and there are still points to be improved in reliably taking out and transporting the sheet-like objects one by one.

  The subject of this invention is providing the adsorption | suction cylinder apparatus which enabled it to take out the sheet-like object stacked | stacked one by one from the upper part reliably, and to convey.

  In order to solve the above problems, in the present invention, an air cylinder, a suction head that is moved up and down by the air cylinder, and a sheet-like object are sucked by a suction force that is supported and applied to the lower surface of the suction head. A suction pad having flexibility to be attached to the suction pad supported by the suction head, the suction pad sucks a sheet-like material, and the lower end of the suction pad is pulled up by lifting the suction part upward. The structure which consists of the protrusion tool made into the state which faces below is employ | adopted.

  In the suction cylinder device having the above-described configuration, the suction head is lowered by the operation of the air cylinder, stops by contacting the sheet-like object on which the suction pad is stacked, and suction force is applied to the suction pad in the stopped state. Then, the uppermost sheet is adsorbed by the suction pad.

  At this time, if the lower end of the protruding tool is in contact with the sheet-like object, the suction pad contracts by the suction force applied to the suction pad, and the suction site is pulled up by elastic deformation due to the contraction. Since the lower end of the protruding tool faces below the lower end of the suction pad by raising the suction part, the sheet-like object is bent starting from the position facing the lower end of the protruding tool, and the air is between the next sheet. A layer is formed to be in a delaminated state.

  For this reason, by contracting the air cylinder in a state where a suction force is applied to the suction pad, only one sheet-like object is taken upward by the suction pad.

  Here, the air cylinder is provided at the lower end of the cylinder main body, a piston incorporated in the cylinder main body, a spring for urging the piston upward, and extending downward from the lower surface of the piston. And a cylindrical piston rod provided with the suction head at a lower end facing the outside, slidably penetrating the rod cover, and the cylinder body communicates with an upper chamber provided above the piston. The air supply port is connected to a lower chamber provided below the piston to provide an air supply / exhaust port. The piston has a check valve port communicating the interior of the piston rod and the upper chamber, an upper chamber and a lower chamber. A piston port that communicates with the chamber, a check valve is incorporated in the check valve port, and the piston and piston are separated by a suction force applied to the supply / exhaust port. Nroddo lowering the suction pad adsorbs sheet by applying suction to the suction pads on the falling stop state abutting the sheet may be adsorbed cylinder so as to increase the dynamic simultaneously.

  The air cylinder slidably passes through a cylinder body, a piston incorporated in the cylinder body, and a rod cover extending downward from the lower surface of the piston and provided at the lower end of the cylinder body, and faces the outside. A piston rod provided with the suction head at the lower end, and the cylinder body is provided with two ports communicating with an upper chamber provided above the piston and a lower chamber provided below the piston; It may be a single rod type air cylinder in which the piston is lowered by supplying compressed air to the upper chamber and the piston is raised by supplying compressed air to the lower chamber.

  In the suction cylinder device according to the present invention, the protruding tool is a cylindrical holder attached to the suction head, and is slidably inserted into the holder so that the lower end protrudes downward from the lower end opening of the holder. It may be made to be extendable / contractible consisting of a protruding protruding pin that is secured and a spring that urges the protruding pin in the protruding direction, or may be made of a non-stretchable pin. .

  In the case of using an extendable protruding tool, it is assumed that the suction pad is lowered and sucks the sheet-like object, and the protruding pin comes into contact with the sheet-like object and is pushed in, and the ascending head starts to rise from the lowered position. At the start of this, the spring protrudes by the elasticity of the spring and pushes the pin to push the sheet-like material so that the sheet-like material is bent starting from the suction portion by the suction pad.

  On the other hand, in the case of using a non-stretchable projecting tool consisting of a pin, the suction pad absorbs the sheet-like material and contracts as a support located at the same level as the lower end of the suction pad or slightly above it. At the time of elastic deformation, the mounting is such that the lower end of the pin faces below the lower end of the suction pad.

  In the present invention, as described above, when the suction pad sucks the sheet-like object and the suction portion is pulled up, the lower end of the protruding tool is placed below the lower end of the suction pad. The sheet-like material to be pulled up can be bent to form a delamination state in which an air layer is formed between the next sheet-like material, and the stacked sheet-like material is reliably removed from the top one by one. Can be transported.

Front view showing an embodiment of an adsorption cylinder device according to the present invention 1 is a longitudinal sectional view of the suction cylinder device shown in FIG. Sectional drawing which expands and shows the upper part of the adsorption cylinder apparatus shown in FIG. Sectional drawing which expands and shows the attachment part of the suction pad of the suction cylinder apparatus shown in FIG. (A) is a front view showing a state in which the suction head is lowered, and (b) is a front view showing a state at the beginning of the upward stroke of the suction head. (A) is a front view which shows the other example of a protrusion tool, (b) is a front view which shows the state which lowered | hung the adsorption head shown to (a) to the minimum position. Schematic showing another embodiment of the suction cylinder device according to the present invention

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 1, the suction cylinder device according to the present invention has an air cylinder 10 and a suction head 40 that is moved up and down by the air cylinder 10.

  Here, a suction cylinder is employed as the air cylinder 10. The suction cylinder 10 has a cylinder body 11, a head cover 12 is provided at the upper end of the cylinder body 11, and a rod cover 13 is provided at the lower end.

  A piston 14 is slidably incorporated in the cylinder body 11, and a lower end portion of a cylindrical piston rod 15 whose upper part is connected to the lower surface of the piston 14 penetrates the rod cover 13 slidably.

  The inside of the cylinder body 11 is partitioned into an upper chamber 16 and a lower chamber 17 by incorporating the piston 14, and a spring 18 that urges the piston 14 upward is incorporated in the lower chamber 17.

  An air supply port 19 is provided in the head cover 12. On the other hand, the rod cover 13 is provided with an air supply / exhaust port 20 communicating with the lower chamber 17, and a prismatic block 22 is connected to the air supply / exhaust port 20 via a nipple 21. An ejector passage 23 communicating with the air supply / exhaust port 20 is formed in the block 22, and when compressed air is supplied to the inlet 23 a of the ejector passage 23, the compressed air is discharged into the outlet 23 b formed at the top of the block 22 and its outlet 23 b. A suction force is applied to the air supply / exhaust port 20 by being ejected from the filter 31 covering the air, and the pressure in the lower chamber 17 is reduced.

  As shown in FIG. 3, a check valve port 24 that communicates the inside of the piston rod 15 and the upper chamber 16 is formed in the piston 14, and a check valve 25 is incorporated in the check valve port 24. The check valve 25 opens the check valve port 24 when the pressure inside the piston rod 15 becomes higher than the pressure in the upper chamber 16.

  The piston 14 is provided with a piston port 26 that communicates the upper chamber 16 and the lower chamber 17. On the other hand, a rod port 27 that communicates the inside of the piston rod 15 and the lower chamber 17 is provided at the upper portion of the piston rod 15.

  As shown in FIG. 2, an arm 28 is attached to a lower end portion of the piston rod 15 that passes through the rod cover 13 and faces downward, and a rod 29 having a lower end portion attached to the end of the arm 28 is attached to the rod cover 13. The piston 14 and the piston rod 15 are prevented from rotating about the shaft center by being slidably inserted into the rod insertion hole 30 formed in the shaft.

  A suction head 40 is attached to the lower end of the piston rod 15 below the attachment position of the arm 28. The suction head 40 is made of a square bar material, and the central portion in the length direction is supported by the lower end of the piston rod 15.

  A suction pad 50 is attached to both ends of the lower surface of the suction head 40, and a protruding tool 60 is attached to the outer end of the suction pad 50.

  As shown in FIGS. 1 and 4, the suction pad 50 has a bellows shape, is made of a flexible rubber or resin, and can be elastically deformed, and the inside thereof has a suction passage 41 formed in the suction head 40. And communicates with the inside of the piston rod 15. A dish-shaped suction pad may be employed instead of the bellows-shaped suction pad 50.

  As shown in FIG. 4, the protruding tool 60 includes a cylindrical holder 61, a protruding pin 62 that is slidably inserted into the holder 61, and a direction in which the protruding pin 62 protrudes from the lower end opening of the holder 61. The holder 61 is provided with an inward flange 64 at the end opening of the holder 61, and the protruding pin 62 is prevented from being pulled out by engagement of the head 62 a of the protruding pin 62 with the flange 64. ing.

The holder 61 has a male screw 61 a on the outer periphery, and the male screw 61 a is screwed into a screw hole 42 formed on the lower surface of the suction head 40 and is fixed by tightening a lock nut 65. Such lower end of the ejector pin 62 by the mounting of the holder 61 has been the same height as the lower end of the suction pad 50, the elastic deformation state suction pad 50 is contracted by adsorbing sheet S _0, the suction pad It suffices if it projects from the lower end of 50 and the lower end of the pin 62 is positioned below.

As shown in FIG. 1, an air supply passage T ₁ is connected to the inlet 23a of the ejector passage 23 formed in the block 22, the air supply passage T ₁ to 3-port 2-position switching valve V ₁ is incorporated therein. The air supply passage T ₂ is connected to the air supply port 19, the air supply passage T ₂ to 2-port 2-position switching valve V ₂ is incorporated. C shown in FIG. 1 indicates a supply source of compressed air.

Adsorption cylinder device shown in the embodiment consists of the structure described above, FIG. 1 shows a state in which the set stacking sheet S ₀ stacked plurality of sheet S ₁ to the lower side of the adsorption cylinder device. In the set state, the 2-port 2-position switching valve V ₂ shown in FIG. 1 and a closed position, when switching the 3-port 2-position switching valve V ₁ to the supply position, the compressed air is supplied to the ejector passage 23. The compressed air is ejected from the outlet 23b, and suction force is applied to the air supply / exhaust port 20 by the ejection.

  The suction force acting on the air supply / exhaust port 20 lowers the pressure in the lower chamber 17, and the piston 14 and the piston rod 15 descend against the elasticity of the spring 18 due to the decrease in pressure.

  At this time, since the air supply port 19 is in a closed state, the pressure in the upper chamber 16 of the cylinder body 11 is slightly reduced through the piston port 26, but the inside of the piston rod 15 is externally connected via the suction pad 50 and the suction passage 41. Therefore, the check valve 25 is opened and the upper chamber 16 is maintained at the atmospheric pressure so that the lowering of the piston 14 is not hindered.

When the piston rod 15 is lowered and the lower end of the suction pad 50 comes into contact with the upper surface of the stacked sheet S ₀ , the lower end of the protruding pin 62 of the protruding tool 60 is flush with the lower end of the suction pad 50. 62 stacked in contact with the upper surface of the sheet S ₀ the lower end of the.

When the lower end of the suction pad 50 comes into contact with the upper surface of the stacked sheet S ₀ , the lower end opening of the suction pad 50 is closed. At this time, the lower chamber 17 communicates with the inside of the piston rod 15 through the rod port 27, and the lower chamber 17 and the upper chamber 16 communicate with each other through the piston port 26. The upper chamber 16 is maintained at the same pressure as the lower chamber 17.

Further, since the inside of the piston rod 15 communicates with the inside of the suction pad 50 via the suction passage 41 provided in the suction head 40, the inside of the suction pad 50 is also held at the same pressure as the lower chamber 17. It becomes, for these pressures lower than atmospheric pressure, a state in which the suction force is applied to the suction pad 50, sheet S ₁ uppermost stacked sheets S ₀ is adsorbed by the suction force.

When the uppermost sheet S ₁ is sucked, the suction pad 50 is elastically deformed and contracted, and the suction head 40 is lowered by an amount corresponding to the contraction amount, and the protruding pin 62 resists the elasticity of the spring 63. It is pushed into the holder 61. The spring 63 is held in an elastically deformed state by the pushing.

FIG. 5A shows a state where the suction head 40 is lowered to the lower limit position. In the lowered state, the pressure in the lower chamber 17 and the upper chamber 16 of the cylinder body 11 is lower than the atmospheric pressure, so that the piston 14 and the piston rod 15 are raised by the restoring elasticity of the spring 18. Further, the suction head 40 rises together with the piston rod 15. At this time, the suction pad 50 because in a state of adsorbing sheet S ₁ of the uppermost sheet S ₁ of the uppermost will be pulled in the adsorption state.

On the other hand, the protrusion pin 62 of the protrusion 60 protrudes due to the restoring elasticity of the spring 63 as the suction head 40 starts to rise. Thus, sheet S ₁ of the uppermost as shown in FIG. 5 (b) by the protrusion by pulling the ejector pins 62 by the suction pad 50, the next sheet bent the ejector pin 62 to the starting point S ₁ The delamination state is such that an air layer is formed therebetween.

Thus, sheet S ₁ is not be taken in a stacked state, and only the sheet S ₁ of one uppermost is reliably pulled upward.

As shown in FIG. 2, the piston 14 on the lower surface of the head cover 12 is sheet-like material S ₁ to a position abutting is pulled, the air cylinder 10 toward the discharge position of the sheet S ₁ by the transport device is not shown It is conveyed horizontally.

When sheet S ₁ is conveyed to the discharge position, three-port two-position changeover valve V ₁ shown in FIG. 1 is switched to the exhaust position shown in FIG. Releasing suction to flow from the rod port 27 into the interior of the piston rod 15, the sheet material S ₁ that has been adsorbed by the suction pad 50 with the outside air flows into the lower chamber 17 from the outlet 23b of the ejector channel 23 by the switching And is discharged downward by its own weight.

Here, in a state where the horizontal conveyance of the air cylinder 10 to the discharge position of the sheet S ₁ by the transport device is not shown, two-port two-position changeover 3 With port 2-position switching valve V ₁ is is an air supply position When the valve V < _b > ₂ is switched to the open state, outside air flows into the upper chamber 16 from the air supply port 19 and becomes an atmospheric pressure state, and the check valve 25 closes the check valve port 24.

At this time, since the lower chamber 17 in the lower than the atmospheric pressure by applying a suction force, the piston 14 and piston rod 15 is lowered, the sheet material S ₁ is lowered in a state of being sucked by the suction pad 50, the lower chamber 17 to the atmospheric pressure flows through the piston port 26, but because the suction force acting on the lower chamber 17 is much greater, largely ignored, sheet S ₁ continues to descend.

When sheet S ₁ is lowered to a predetermined position, 3 switch the port 2-position switching valve V ₁ to the exhaust position, as described above, outside air flows into the lower chamber 17 from the outlet 23b of the ejector passage 23 to flowing from the rod port 27 into the interior of the piston rod 15 as well as the sheet-like material S ₁ that has been adsorbed by the suction pad 50 is released adsorbed, it is discharged downward by its own weight.

  In the embodiment shown in FIG. 4, as a protruding tool 60, a cylindrical holder 61 attached to the suction head 40 and a slidably inserted into the holder 61, and a lower end portion from a lower end opening of the holder 61. Although a projecting pin 62 that is prevented from being pulled out in a state of projecting downward and a spring 63 that biases the projecting pin 62 in the projecting direction is shown, the projecting tool 60 is limited to this. is not.

For example, as shown to Fig.6 (a), it may consist of the pin 66 without a stretching property. In adoption of the projecting member 60 of the pin 66, the lower end or lower end of the same level of suction pads 50 of the pin 66, as a support which is located slightly higher than, the suction pad 50 adsorbs sheet S ₁ At the time of elastic deformation that contracts, the pin 66 is attached so that the lower end of the pin 66 faces below the lower end of the suction pad 50.

In the mounting, such as the projecting member 60 of the pin 66, when brought into contact with the upper surface of the sheet S ₀ stacked lower end of the suction pad 50 lowers the suction head 40 by actuation of the cylinder 10 protrudes consisting pin 66 the upper surface of the sheet S ₀ be stacked lower end of the tool 60 becomes in contact state.

At this time, it has been closed lower end of the suction pads 50, since the state in which the suction force is applied to the interior of the suction pad 50, the suction pad 50 is elastically deformed while adsorbing the sheet S ₁ of the uppermost deflated, sheet S ₁ by the contraction pulled adsorption sites by the suction pad 50.

At this time, the lower end of the pin 66 for forming the projecting member 60 is due to the state in contact with the sheet S _1, the lower end of the pin 66 is in a state which is located below the lower end of the suction pad 50, due to the suction pads 50 by pulling of the sheet S _1, as shown in FIG. 6 (b), bent into a sheet-like material S ₁ is generated and delamination state air layer is formed between the next sheet S ₁ Is done.

Therefore, only sheet S ₁ of the uppermost and the suction head 40 is raised movement by actuation of the cylinder 10 is taken out upwardly.

In the embodiment shown in FIG. 2, as the air cylinder 10, the piston 14 and the piston rod 15 are lowered by supplying compressed air, and a suction force is applied to the suction pad 50 in the lowered state to suck the sheet-like material S ₁ . Although the suction cylinder in which the piston 14 and the piston rod 15 are raised in the suction state is employed, the air cylinder 10 is not limited to the above.

  For example, as shown in FIG. 7, a cylinder body 70, a piston 71 incorporated in the cylinder body 70, and a rod cover 72 that extends downward from the lower surface of the piston 71 and is provided at the lower end of the cylinder body 70. The cylinder body 70 has an upper chamber 74 provided above the piston 71 and a piston 71 below the piston 71. The piston rod 73 has a suction head 40 provided at the lower end facing the outside. Two ports 76 and 77 communicating with the lower chamber 75 are provided, the piston 71 is lowered by supplying compressed air to the upper chamber 74, and the piston 71 is raised by supplying compressed air to the lower chamber 75. A single rod type air cylinder may be used.

In adoption of the above-described single rod type air cylinder, four-port two-position supply of compressed air for the exhaust and lower chamber 75 with respect to the lower chamber 75 and the supply of compressed air with respect to the upper chamber 74 by the changeover valve V ₃ and the upper chamber 74 So that the exhaust can be switched alternately.

Also, the suction pad 50 by the suction pads 50 to connect the suction passage 80, incorporating the ejector 81 to the suction passage 80, incorporating the inlet side to the 3-port 2-position switching valve V ₄ of the ejector 81, the switching valve V ₄ The load of the suction force on and the release of suction are switched.

  In FIG. 1, two suction pads 50 are provided in the suction head 40, and the protruding tools 60 are provided adjacent to the respective suction pads 50. However, the number of the suction pads 50 provided with the protruding tools 60 is the same. It is not limited. For example, one suction pad 50 may be provided in the suction head 40.

10 Air cylinder (Suction cylinder)
11 Cylinder body (Suction cylinder body)
13 Rod cover 14 Piston 15 Piston rod 16 Upper chamber 17 Lower chamber 19 Air supply port 20 Air supply / exhaust port 24 Check valve port 25 Check valve 40 Adsorption head 50 Adsorption pad 60 Projection tool 61 Holder 62 Projection pin 63 Spring 66 Pin 70 Cylinder body 71 Piston 72 Rod cover 73 Piston rod 74 Upper chamber 75 Lower chamber 76 Port 77 Port

Claims (5)

  An air cylinder, a suction head that is moved up and down by the air cylinder, a suction pad that is supported on the lower surface of the suction head and has a flexibility to suck a sheet-like object by an applied suction force, and supported by the suction head The suction pad is attached to the suction pad, the suction pad sucks the sheet-like material, and the suction part is pulled up upward, so that the lower end faces downward from the lower end of the suction pad. Cylinder device.   The air cylinder is provided at the lower end of the cylinder main body, a piston incorporated in the cylinder main body, a spring for urging the piston upward, and extending downward from the lower surface of the piston. The rod cover slidably penetrates, and has a cylindrical piston rod provided with the suction head at the lower end facing the outside, and the cylinder body communicates with an upper chamber provided above the piston. A supply / exhaust port is provided in communication with an air supply port and a lower chamber provided below the piston, a check valve port for communicating the inside of the piston rod and the upper chamber, and an upper chamber and a lower chamber. A piston port that communicates with each other, a check valve is incorporated in the check valve port, and a piston and a piston are provided by a suction force applied to the supply / exhaust port 2. The suction cylinder according to claim 1, further comprising a suction cylinder that lowers the lid and applies a suction force to the suction pad in a descending stop state where the suction pad comes into contact with the sheet-like material to suck the sheet-like material and simultaneously move it upward. The suction cylinder device described.   The air cylinder has a cylinder body, a piston incorporated in the cylinder body, and a lower end that extends downward from the lower surface of the piston and slidably passes through a rod cover provided at the lower end of the cylinder body and faces the outside. A piston rod provided with the suction head at a portion, and the cylinder body is provided with two ports communicating with an upper chamber provided above the piston and a lower chamber provided below the piston, 2. The suction cylinder device according to claim 1, comprising a single rod type air cylinder configured to lower the piston by supplying compressed air to the upper chamber and to raise the piston by supplying compressed air to the lower chamber.   The protruding tool is a cylindrical holder attached to the suction head, a protruding pin that is slidably inserted into the holder, and is secured in a state where the lower end protrudes downward from the lower end opening of the holder, and The suction cylinder device according to any one of claims 1 to 3, comprising a spring that biases the protruding pin in the protruding direction.   The suction cylinder device according to claim 1, wherein the protruding tool includes a pin attached to the suction head.

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