JPH08290378A - Sucking and transferring equipment of article - Google Patents

Abstract

PURPOSE: To realize the sure and fast transfer without generating any mistaken sucking of a sheet-shaped article. CONSTITUTION: Sucking and transferring equipment comprises an eccentric shaft 4 which is eccentrically turned by the turning of a main shaft 1, a valve block 6 which is fitted to the eccentric shaft 4 and regulates the direction by a free shaft 9, a planetary gear 10 which is adjacent to the side of the valve block 6, pressed by the spring pressure, and turnably supported by the eccentric shaft 4, a sucking table 8 having a sucking pat which is fixed to the planetary gear 10, and an internal gear 16 which is engaged with the planetary gear 10 and concentrically fixed to a body frame F with the main shaft 1. The sucking pat 81 of the sucking table 8 is turnable by the turning of the eccentric shaft 4, and arranged between a feeding hopper H and an article receiving table T.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction and transfer apparatus for a sheet-shaped article which is capable of transferring between two different positions at high speed and with high accuracy.

[0002]

2. Description of the Related Art When a sheet-shaped article or a flat-plate article having a certain thickness is transferred between two different positions from a supply position to a delivery position of the article, as shown in FIG. The suction table is rotatably arranged on the main shaft that rotates, the article is sucked at the supply position, the article is sucked and moved by the rotation of the suction table, and the article is paid out at the payout position. The suction table is fixed to the main shaft by projecting.

[0003]

Therefore, in the conventional apparatus, the suction base which is provided so as to project from the main shaft and rotates together with the main shaft is
Depending on the size of the suction article, a flat suction surface having a certain length and width is provided. Therefore, when the suction table rotates about the main shaft, the rotation locus differs between the central portion and the end portion of the suction surface, and generally the rotation locus of the central portion of the suction surface closest to the center of the spindle. Has a small radius,
The radius of the end becomes large. Therefore, at the supply position for sucking articles, the gap between the article outlet and the suction surface is set so that the suction base end does not come in contact with the article outlet and is not on the rotation trajectory line of the suction end, and the gap is set large. are doing.
For this reason, if the gap is large, the suction vacuum source may leak from this gap, and a suction error of the article may occur. Further, in order to solve this suction error, a suction table moving device is separately provided so that the suction table is located at the article outlet position and approaches the outlet only when the article is sucked. However, in this method, the apparatus becomes complicated and the number of operations of the suction table at the article suction position increases, so that high-speed transfer is also limited.

An object of the present invention is to reliably and at high speed transfer a sheet-like article without causing a suction error.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above object, and includes an eccentric shaft which is eccentrically rotated by the rotation of a main shaft and a floating shaft which is fitted to the eccentric shaft. With a valve block that regulates its direction, a planetary gear that is adjacent to the side surface of this valve block and is rotatably supported by an eccentric shaft by pressure contact with spring pressure, and a suction pad that is detachably attached to this planetary gear. It consists of a suction table and an internal gear that meshes with the planetary gear and is concentric with the main shaft and fixed to the body frame.The suction pad of this suction table is made rotatable by the rotation of the eccentric shaft, and the supply hopper is provided. The gist is that it is placed between the product and the pedestal. In addition, a support plate having an eccentric inner hole is rotatably supported via a bearing in the planetary gear that is internally engaged with the internal gear, and this support plate is attached to the internal gear. And

[0006]

The planetary gear, which is disposed so as to face each other, is provided between the supply hopper and the article pedestal and which is provided on an eccentric shaft that rotates in advance with a predetermined eccentricity according to the main axis of the supply hopper and the article pedestal. Since the valve block is arranged so as to be in pressure contact with the planetary gears, and the suction table equipped with the article suction pads on the planetary gear is exchangeable, this suction table with suction pads can be attached to the lower surface of the supply hopper as much as possible. As they close to each other and swivel between the two points, and the gap between the suction pad and the lower surface of the hopper can be reduced,
A reliable article transfer can be performed at high speed without causing a suction error. In addition, a support plate having an eccentric inner hole is rotatably supported via a bearing in the planetary gear that is internally engaged with the internal gear, so that the drive part is covered by this support plate for safety. You can secure the sex.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An adsorption transfer device for articles according to the present invention will be described below with reference to the illustrated embodiments. In the figure, H is a supply hopper that stores a large number of sheet-like articles, and article pedestals T that receive the articles are arranged to face the supply hopper H, and are supported by a main body frame F, and the supply hopper H and The article suction and transfer device of the present invention is disposed between the article cradle T.

The supply hopper H is attached to a pedestal (not shown) and accumulates the sheet-like objects formed in the previous step. The size is made slightly larger than the seat, and the lower part is equipped with a claw that prevents the seat from falling and is easy to take out. This hopper has a structure that can be changed with one touch according to the size of the seat.

Further, the dropping hopper of the article receiving tray T is incorporated in the dropping hopper mechanism, is attached to the shaft of the dropping gear 30 at a position facing the suction table, receives the fall of the sheet, and is rotated by the dropping gear. Then, it is dropped and supplied to the next process. The drop gear is rotated by another drive source (not shown) in response to a command confirming that a certain number of sheet-shaped objects are accumulated, and the sheet is dropped to the lower part.

In this article suction and transfer apparatus, a bearing frame B having a bearing is attached to a main body frame F of the article suction and transfer apparatus so that the main shaft 1 is cantilevered, and the bearing is supported by two points to rotate. In addition to being freely supported, a power transmission mechanism 2 such as a pulley, a sprocket wheel, and a gear is provided at the outer end of the main shaft so that the main shaft can be rotationally driven according to the transfer speed of the article and can be adjusted as necessary. An eccentric plate 3 is fixed to the tip of the main shaft 1.
Rotates with the main shaft 1, but the eccentric plate 3 has an eccentric shaft 4
The amount of eccentricity between the main shaft 1 and the eccentric shaft 4 via the eccentric plate 3 is determined to be a predetermined value, and the eccentric plate 3 has a bearing 5 on its outer periphery. It is arranged and rotatably supported by the bearing frame B.

The eccentric shaft 4 supports a valve block 6, a planetary gear mount 7 and a suction base 8 via bearings. The rotation of the main shaft 1 causes the valve block 6 to rotate on the outer circumference of the main shaft in accordance with the amount of eccentricity of the eccentric shaft 4.
In order to keep the direction of the valve block 6 constant during this eccentric rotation, the valve block 6 is provided with a floating shaft 9,
A thrust bearing 10 of a slide body 11 is slidably fitted to the idle shaft, and the slide body 11 is supported by a support shaft 12 projecting from the main body frame F so as to be rotatable. As a result, when the valve block 6 is eccentrically rotated, the floating shaft 9 slides in the up-and-down direction while rotating left and right in accordance with the eccentric rotation, and holds the direction of the valve block constant.

The valve block 6 is supported by the eccentric shaft 4 via a bearing inside, and a spring S is interposed in the inner hole of the valve block.
One end of the eccentric shaft is supported by a part of the eccentric shaft, and the other end is supported by the valve block, and this elastic force is applied to the valve block 6 so as to be pressed against the end face of the planetary gear mounting base 7, thereby mounting the valve block 6 and the planetary gear. A vacuum leak is prevented between the vacuum holes 60 and 70 which are formed in the table 7 and are electrically connected to each other. Further, the valve block 6 is provided with a vacuum connection port 14 and is connected to a vacuum source via a vacuum hose or the like.

The vacuum hole 60 provided in the valve block 6 is a vacuum hole, and has a structure in which a groove is engraved along a circle having its central axis in the valve block, and a part of the grinding is left. Then, one end is opened to the outside and faces the vacuum port of the planetary gear, and the other end is closed and connected to the vacuum connection part by a hole leading to the outside, so that the part left after grinding penetrates the compressed air hole and drops the sheet by compressed air. You may

The planetary gear 7, which is rotatably supported by the eccentric shaft 4 via bearings, has a required number of teeth on its outer peripheral surface, and the eccentric shaft 4 extends through the central boss portion. The planetary gear 7 is rotatably supported via bearings, and the outer periphery of the planetary gear 7 has an internal gear 1 having a diameter larger than the inner diameter of the planetary gear 7.
6 is fitted, some of the teeth formed on the inner peripheral surface of the internal gear 16 and some of the teeth of the planetary gear mesh with each other, and the planetary gear 7
Eccentrically rotates along the inner peripheral surface of the internal gear 16 concentric with the main shaft 1 while changing the positions of the meshing teeth.

An eccentric disk-shaped support plate 15 is fitted to the outer peripheral portion of the planetary gear mounting base 7 through a bearing, and a bearing is also fitted to the outer peripheral portion of the support plate 15 so that the internal gear is attached to the inner gear. It is rotatably supported by the bearing support 19 provided.

The internal gear 16 is supported by a plurality of support beams 18 projecting from the main body frame F, so that the internal gear is fixed to the main body frame.

Further, a suction table 8 is directly abutted and fixed to the outer surface of the boss portion of the planetary gear 7 so as to rotate together with the planetary gear 7 about the eccentric shaft 4.

The suction pad 81 projecting from the outer surface of the suction table 8 is provided on one side surface of the suction table, and when the eccentric shaft is at the top dead center, the suction pad 81 faces upward and is located at a lower position of the supply hopper. To suck the article at the lowermost position of the supply hopper, and at the bottom dead center position of the eccentric shaft rotated by 180 degrees from the top dead center position, the suction pad faces downward and faces the article cradle. Then, the suction-moving article is placed on the article cradle. This is because the position of the vacuum hole in the valve block and the planetary gear mount becomes the same or not as the main shaft rotates, which closes or opens the vacuum hole to open and close the valve. When 81 is upward, the sheet-like article is adsorbed from the supply hopper, and is downward while moving downward by the rotation of the eccentric shaft 4 and the adsorption table 8. When the sheet article is opposed to the article receiving stand, the adsorption is released, and the adsorption is performed. The sheet-like article is transferred onto the pedestal.

Below the supply hopper H, the article receiving tray T, which is disposed with the suction table 8 interposed therebetween, has a drop gear 30 for transmitting power from the outside, a shaft 31 thereof, and a drop hopper 32.
According to a command from a control mechanism (not shown), the drop gear rotates to drop the integrated sheet in the hopper to the next step. This mechanism has a structure that can be replaced and changed with one touch according to the size of the seat.

The suction base 8 is connected to a planetary gear mounting base so that it can be easily replaced, and the shape of the suction base is determined by the number of teeth of the internal gear and the planetary gear. It has a flat surface, and the suction port is parallel to the flat surface of the table inside.
There are several through holes, one end of which is connected to the suction port of the planetary gear mount and the other end of which is connected to the suction pad is a hole that is connected to the suction pad. At this suction port, a hole is formed inside the suction base along its circumference in the axial direction according to the number of suction pads, one end is closed and the other end is released facing the suction port of the planetary gear mounting base. A hole for attaching a pad is attached near the closed mouth.

The suction pad 81 is made of a rubber material,
One end is open to suck the sheet,
The other end is fixed to a suction table and is connected to a suction port formed in the suction table, and the number of the suction ports is one to several per one sheet depending on the shape and weight of the sheet.

Next, the operation of the article suction and transfer apparatus constructed as described above will be described. Sheet-shaped articles are continuously supplied to the supply hopper H from a pre-process (not shown). In this state, the external drive source is rotated to connect the external vacuum source to the vacuum connection port 14. As the main shaft 1 rotates, the planetary gear 7 meshes with the internal gear 16 while rotating (spinning) about the eccentric shaft, and the planetary gear mounting base and the suction mount 8 both rotate. When the suction pad 8 moves up and down by the rotation of the suction table 8 and comes directly under the supply hopper H, the pad operates as a vacuum (passes from the vacuum connection port through the vacuum hole and the vacuum port to the pad). To adsorb one sheet. When this pad is placed on the lower receiving table T, the valve is closed and the seat falls on the receiving table T. Air pressure may be applied when dropping.

At this time, the valve block 6 tries to rotate by the rotation of the eccentric shaft 4, but since it is limited by the floating shaft 9, it moves up and down while rotating slightly to the left and right, but the vacuum hole 60 is provided. The spring S constantly pushes against the side surface of the planetary gear mount so that it moves so as to communicate with the suction port 70.

At this time, the support plate 15 rotates via the upper bearing in accordance with the revolution of the eccentric shaft 4 with the main shaft 1 as the center, and the planetary gear 7 rotates via the lower bearing. This support plate has a considerable weight and is an indispensable mechanism for holding a suction table that rotates at high speed.

[0025]

In the apparatus for transferring and transporting articles according to the first aspect of the present invention, the suction table provided with the suction pads so as to rotate eccentrically with respect to the main shaft is rotatably supported between the supply hopper and the article receiving table. Therefore, there is an advantage that the gap between the supply hopper and the suction pad can be made as small as possible, the suction of the sheet-like article by the pad can be reliably performed, and the transfer efficiency can be improved. In the adsorption transfer device for articles according to the second aspect of the invention, a bearing is provided inside the internal gear, and a bearing is attached to the outer periphery of the planetary gear mounting base to which the adsorption base is mounted, and a support plate is held between both bearings. Since the driving plate is covered with this support plate, there is an advantage that operational safety can be achieved.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of an adsorption transfer device for articles according to the present invention.

FIG. 2 is an explanatory diagram of an embodiment in which the device is symmetrically arranged.

FIG. 3 is an explanatory diagram of a known example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 main shaft 2 power transmission mechanism 3 eccentric plate 4 eccentric shaft 5 bearing 6 valve block 60 vacuum hole 7 planetary gear mount 70 vacuum hole 8 adsorption table 81 adsorption pad 9 idler shaft 10 planetary gear 11 adsorption hole internal gear 12 spindle 14 Vacuum connection port 15 Support plate 16 Internal gear B Bearing frame F Body frame H Supply hopper T Article pedestal

Claims (2)

[Claims] 1. An eccentric shaft which is eccentrically rotated by the rotation of a main shaft, a valve block which is fitted to the eccentric shaft and whose direction is restricted by a floating shaft, and a spring pressure which is adjacent to a side surface of the valve block. Planet gears pressed against each other and rotatably supported on an eccentric shaft, a suction pad with a suction pad fixed to this planet gear, and an internal gear that meshes with the planet gear and is concentric with the main shaft and fixed to the main frame. And a suction pad of the suction table which is made rotatable by rotation of an eccentric shaft and is arranged between a supply hopper and an article receiving table. 2. A support plate having an eccentric inner hole is rotatably supported in a planetary gear via a bearing, and
The adsorption transfer device for articles according to claim 1, wherein the support plate is attached to the internal gear.