CN113562487A

CN113562487A - Device for separating paper

Info

Publication number: CN113562487A
Application number: CN202110901413.7A
Authority: CN
Inventors: 杜巧勇; 陈民亮; 黎柏良
Original assignee: Fudewei Intelligent Technology Shanghai Co ltd
Current assignee: Fudewei Intelligent Technology Shanghai Co ltd
Priority date: 2021-08-06
Filing date: 2021-08-06
Publication date: 2021-10-29

Abstract

An apparatus for separating paper. According to the invention, after the paper is rubbed out by the paper rubbing wheel, the paper pressing piece in the paper pressing cylinder group is rotated to press the exposed lower layer of paper, the sucker frame moves to a preset position to suck the paper, and in the process of sucking up the paper, the sucker frame adjusts the height and the width in the width direction of the two rows of suckers, so that the sucked up paper forms a shape that the edge height is sucked by the sucker and the middle is not sucked by the sucker. Meanwhile, in the process of the position change of the sucker, the shaking sucker on the sucker frame continuously shakes in a vertical direction at high frequency; the air knife group continuously blows air to the lower part of the edge of the paper, and the modes are all used for increasing the air among the paper so that the lower layer of paper is not sucked and falls back to the paper stack; thus, when the sucking disc frame sucks the top paper sheet to move to a preset position, each part of the invention is ready to separate the next paper sheet. The paper separation device has the advantages that through the mutual matching of various parts and modes, the paper is not easy to cling together after air enters, and therefore the paper is stably, reliably, efficiently and conveniently separated.

Description

Device for separating paper

Technical Field

The invention relates to the field of automatic paper separating equipment, in particular to a paper separating device.

Background

In the production process of the PCB, when the PCB is collected in some procedures, in order to prevent the board surface from being damaged by pressure, a layer of separation paper needs to be arranged below the board in a stacking mode, and the separation paper needs to be taken away one by a paper suction mechanism and placed below the board. The traditional paper suction mechanism only uses a suction cup frame with a vacuum suction cup to directly suck paper, the mode is easy to cause the phenomenon of taking two sheets, and after the lower paper is taken off, the subsequent suction cup frame can not accurately take the paper. In fact, the paper is breathable, which causes the 'continuous paper' to be formed, so that when the vacuum chuck sucks the first paper by air suction, air between the lower paper is also sucked out to reduce air pressure, and the lower paper is tightly attached to the upper paper and is also sucked by the vacuum chuck. However, if the position of the suction cup is located at the edge of the paper, outside air can be supplemented more conveniently, so that the air pressure between two pieces of paper is not easy to reduce, and the pieces of paper are prevented from being stuck together.

Chinese utility model patent 201620331789.3 (hereinafter referred to as "893 patent") discloses a paper sheet separating and discharging device, including: the paper sheet pre-sucking device comprises a lifting assembly for lifting paper sheets in a bin to a preset position, an air blowing port for blowing air to stacked paper sheets, a pre-sucking paper assembly for lifting one corner of the paper sheet on the top surface and a paper sucking clamp for lifting the whole paper sheet. The paper pile is lifted to a preset position by a lifting assembly, one corner of a first piece of paper is firstly sucked by a pre-suction paper assembly, then the paper is lifted by a first suction disc group which is close to the pre-suction paper assembly and an air blowing opening on a paper suction clamp for a certain distance, a second suction disc group works again, and after the second suction disc group adsorbs the paper, the paper suction clamp takes out the paper; and the air blowing pipe can blow air to the paper before and after pre-absorbing the paper. However, the pre-suction paper assembly in the patent is easy to suck a plurality of pieces of paper, and the main action part of the suction cup of the paper suction clamp is the middle part of the paper, so that air is not easily supplemented into the paper; although the air blowing pipe is arranged to enable the paper sheets at the top to be fluffy, the auxiliary separation screw arranged for preventing the paper sheets from being blown away limits the fluffiness of the paper sheets, so that the device disclosed by the patent is still easy to suck a plurality of paper sheets and is not stable and quick enough in working.

Therefore, in the field of automatic paper separating equipment, a paper separating device which has high working efficiency, stability and reliability and is suitable for the automatic production process of large-area circuit printed boards is needed.

Disclosure of Invention

In view of the above, the present invention provides a paper separating device with high working efficiency, stability and reliability, and suitable for automatic production process of large-area printed circuit boards. In order to achieve the purpose, the invention adopts the following technical scheme:

according to the first aspect, the paper separating device is used for placing a paper carrying table for stacking paper, a sucker frame for sucking up the paper at the edge of the width direction is installed above the paper carrying table, the position of the sucker frame in the horizontal direction and the position of the sucker frame in the vertical direction can be adjusted, and the distance between two rows of suckers on the width direction can be adjusted.

In other possible embodiments, the suction cup frame comprises a main beam located in the middle, at least one end of the main beam is obliquely provided with a lifting cylinder, the side of the cylinder barrel of the lifting cylinder faces upward and the inner side of the suction cup frame, and a piston rod of the lifting cylinder is fixed with the suction cup assembly.

In other possible embodiments, the suction cup frame comprises a main beam located in the middle, at least one end of the main beam is horizontally provided with a telescopic cylinder, the side of the cylinder barrel of the telescopic cylinder faces the inner side of the suction cup frame, and a piston rod of the telescopic cylinder is fixed with the suction cup assembly.

In other possible embodiments, the sucker assembly comprises a suction pipe, a plurality of paper suction suckers and at least one shaking sucker, wherein the shaking sucker comprises a shaking cylinder and a vacuum sucker, and the shaking cylinder enables the vacuum sucker to shake in a vertical direction during operation.

In other possible embodiments, a paper twisting mechanism for twisting out the top-layer paper is installed at one side of the paper carrying table, the paper twisting mechanism comprises a paper twisting wheel for twisting out the top-layer paper, a paper twisting cylinder group for adjusting the position of the paper twisting wheel, and a supporting plate for supporting the top-layer paper is arranged below the paper twisting wheel.

In other possible embodiments, the device further comprises a paper pressing air knife mechanism arranged at the edge of the paper carrying table, the paper pressing air knife mechanism comprises a lifting cylinder vertically arranged in the middle, a guide rod of the lifting cylinder is fixed with the mounting plate, two ends of the mounting plate are respectively fixed with a rotary paper pressing cylinder group, an air knife group is arranged in the middle of the mounting plate, and the air knife group is used for blowing air to the paper.

In other possible embodiments, the rotary paper pressing cylinder group comprises a rotary cylinder and a paper pressing piece, and after the top layer paper is twisted out, the rotary cylinder rotates the paper pressing piece and presses the lower layer paper.

In other possible embodiments, the paper support has a lifting mechanism below the paper support for adjusting the height of the paper support.

In other possible embodiments, the sheet support is provided with a flap that restricts the position of the sheet.

According to the invention, after the paper is rubbed out by the paper rubbing wheel, the paper pressing piece in the paper pressing cylinder group is rotated to press the exposed lower layer of paper, the sucker frame moves to a preset position to suck the paper, and in the process of sucking up the paper, the sucker frame adjusts the height and the width in the width direction of the two rows of suckers, so that the sucked up paper forms a shape that the edge height is sucked by the sucker and the middle is not sucked by the sucker. Meanwhile, in the process of the position change of the sucker, the shaking sucker on the sucker frame continuously shakes in a vertical direction at high frequency; the air knife group continuously blows air to the lower part of the edge of the paper, and the modes are all used for increasing the air among the paper so that the lower layer of paper is not sucked and falls back to the paper stack; thus, when the sucking disc frame sucks the top paper sheet to move to a preset position, each part of the invention is ready to separate the next paper sheet. The paper separation device has the advantages that through the mutual matching of various parts and modes, the paper is not easy to cling together after air enters, and therefore the paper is stably, reliably, efficiently and conveniently separated.

Drawings

FIG. 1 is a schematic view of a suction tray holder of the apparatus for separating paper sheets according to the present invention;

FIG. 2 is a schematic view of a suction tray holding a sheet in the apparatus for separating sheets according to the present invention;

FIG. 3 is a schematic view of a suction tray holding a sheet in the apparatus for separating sheets according to the present invention;

FIG. 4 is an enlarged schematic view of the extended state of the lift cylinder in the apparatus for separating paper of the present invention;

FIG. 5 is an enlarged view of the contracted state of the lift cylinder in the apparatus for separating paper sheets according to the present invention;

FIG. 6 is a schematic view showing a partial structure of the apparatus for separating paper sheets according to the present invention;

FIG. 7 is a schematic view of a paper feeding mechanism of the apparatus for separating paper according to the present invention;

FIG. 8 is a schematic view of the apparatus for separating paper of the present invention during pressing of paper;

FIG. 9 is a schematic view of the apparatus for separating paper of the present invention when the paper is not being pressed;

FIG. 10 is a partial schematic view of a paper pressing air knife mechanism in the paper separating device of the present invention.

Description of the main elements

10	Paper carrying table
		101	Paper sheet
102	Baffle plate
		20	Paper rubbing mechanism
201	Paper rolling wheel
		202	Paper rubbing cylinder set
203	Supporting plate
		204	Limiting plate
30	Suction cup holder
		301	Main beam
302	Lifting cylinder
		30a	Cylinder barrel
30b	Piston rod
		304	Sucker assembly
304a	Air suction pipeline
		304b	Paper suction cup
304c	Shaking cylinder
		304d	Vacuum chuck
40	Paper pressing air knife mechanism
		400	Lifting cylinder
401	Rotary cylinder
		402	Paper pressing piece
403	Air knife group

Detailed Description

In order to make the objects, principles, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration and are not intended to limit the invention, as described in this summary of the invention.

It should be particularly noted that in the description of the present invention, the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, the vertical direction and the width direction are indicated in fig. 1, the horizontal direction is the direction perpendicular to the vertical direction, and the width direction is the moving direction when the distance between the two rows of suction cups is shortened or restored, the connection or positional relationship can be determined according to the text or technical content of the description, and some or all of the positional change diagrams are omitted or not shown for the sake of simplicity of the drawing, and the omitted or not-shown positional change diagrams are not clearly described in the present description, and it cannot be considered that no description is made, for simplicity of explanation, specific explanations are not repeated one by one in the detailed explanation, and are collectively explained herein.

Referring to fig. 1, which is a schematic structural diagram of a suction tray holder in the paper separating device of the present invention, in a first aspect, the present invention provides a paper separating device, including: the paper carrying table 10 is used for placing stacked paper 101, a baffle plate 102 for limiting a paper stack is arranged at the edge of the paper carrying table 10, a paper twisting mechanism 20 for twisting out top-layer paper is installed on one side of the paper carrying table 10, a suction cup frame 30 for sucking up the paper at the edge in the width direction is installed above the paper carrying table 10, the suction cup frame 30 makes reciprocating motion in the horizontal direction and the vertical direction, and the distance between two rows of suction cups of the suction cup frame 30 in the width direction is adjustable. In another embodiment, the paper twisting mechanism 20 includes a paper twisting wheel 201 for twisting out the top layer of paper, a paper twisting cylinder group 202 for adjusting the position of the paper twisting wheel 201, a supporting plate 203 for supporting the twisted out paper is disposed below the paper twisting wheel 201, and a position limiting plate 204 for limiting the position of the paper 101 is also disposed below the supporting plate 203. In another embodiment, the paper support 10 has a lifting mechanism below to adjust the height of the paper support 10, so that the top layer of paper can be rubbed by the paper rubbing wheel 201 onto the surface of the supporting plate 203 without being stuck on the chamfer of the supporting plate 203 for blocking the lower layer of paper.

The specific working process of the components is that the lifting mechanism below the paper carrier 10 adjusts the height of the paper carrier 10, so that the top layer of paper can be rubbed onto the surface of the supporting plate 203 by the paper rubbing wheel 201 and can not be clamped on a chamfer used for blocking the lower layer of paper by the supporting plate 203; then the position (including the position in the vertical direction and the position in the horizontal direction) of the paper twisting wheel 201 is adjusted by the paper twisting cylinder group 202, so that the paper twisting wheel 201 just contacts the top layer of paper, the paper twisting cylinder group 202 contracts, the paper twisting wheel 201 twists the top layer of paper onto the supporting plate 203, and the paper twisting cylinder group 202 adjusts the paper twisting wheel 201 to the initial position; the suction cup holder 30 is controlled by the driving mechanism to reciprocate in the horizontal direction and the vertical direction, the suction cup holder 30 is provided with at least two rows of paper suction cups 304b in the width direction, the two rows of paper suction cups 304b suck the edge of the paper in the width direction, the suction cup holder 30 moves to the upper side of the top layer of paper first and then descends until the suction cups are in contact with the top layer of paper, the paper suction cups 304b generate suction force through ventilation, as shown in fig. 2, the drawing is a schematic diagram of the paper being sucked by the suction cup holder 30 in the paper separating device of the present invention, and the suction cup holder 30 descends until the paper suction cups 304b suck the edge of the top layer of paper. Then, the two rows of suction cups of the suction cup holder 30 rise and the distance in the width direction is reduced, as shown in fig. 3, the paper will form a shape with high edges and concave middle; the driving mechanism then controls the suction tray 30 to suck and move the top sheet over the printed circuit board to place the sheet on the printed circuit board.

The way of realizing that two rows of sucking discs of the sucking disc frame 30 rise and the distance in the width direction is reduced is that except that two rows of sucking discs directly move to the position above the inner side of the sucking disc frame 30, the height of the sucking discs also rises while the distance in the width direction of the two rows of sucking discs is shortened, thereby forming the shapes of edge height and middle depression in the width direction of the sucked paper, and facilitating the subsequent processes of assisting in separating paper, such as shaking, blowing and the like. The reason why the distance between the two rows of suction cups 30 in the width direction is shortened first is that the distance between the two rows of suction cups sucking the paper in the width direction is shortened first, and the paper is likely to be wrinkled and damaged or irregular due to the fact that a certain distance is not available between the two rows of suction cups and the paper stack, which is not beneficial to the subsequent process of separating the paper. One possible embodiment is an enlarged schematic view of the extended state of the lift cylinder 302 in the apparatus for separating sheets of paper of the present invention, as shown in fig. 4. The suction cup holder 30 comprises a main beam 301 located in the middle, at least one end of the main beam 301 is obliquely provided with a lifting cylinder 302, the side of the cylinder 30a of the lifting cylinder 302 faces upward and the inner side of the suction cup holder 30, and the piston rod 30b of the lifting cylinder 302 is fixed with the suction cup assembly 304, as shown in fig. 5, which is an enlarged schematic view of the contraction state of the lifting cylinder 302 in the device for separating paper sheets of the present invention. In a second possible embodiment, the suction cup holder 30 includes a main beam 301 located in the middle, at least one end of the main beam 301 is horizontally installed with a telescopic cylinder, the side of the cylinder 30a of the telescopic cylinder faces the inside of the suction cup holder 30, and the piston rod 30b of the telescopic cylinder is fixed with the suction cup assembly 304, specifically, after the paper suction cup 304b sucks the paper, the suction cup holder 30 first rises to a predetermined height, and then the distance between the two rows of suction cups of the suction cup holder 30 in the width direction decreases. The above examples are only two embodiments of the present invention, which can achieve the ascending of the two rows of suction cups and the distance reduction in the width direction, and other solutions that can achieve the ascending of the two rows of suction cups and the distance reduction in the width direction in different ways should also be within the scope of the present invention.

In another embodiment, the suction cup assembly 304 includes a suction line 304a, a plurality of paper suction cups 304b, at least one dithering cup, the dithering cup including a dithering cylinder 304c and a vacuum cup 304d, the dithering cylinder 304c operable to dither the vacuum cup 304d in a vertical direction. The suction duct 304a is an air passage for the paper suction cup 304b and the shaking cup to work, when the two rows of suction cups of the suction cup frame 30 rise and the distance in the width direction is reduced, and the paper sheets will form a shape with high edges and concave middle, the shaking cup shakes in the vertical direction, so that air enters the sucked paper sheets, air exists between the paper sheets, and the lower paper sheets are easily separated from the top paper sheet. As shown in fig. 8, which is a schematic view of the paper pressing of the paper separating device of the present invention, in another embodiment, the paper separating device of the present invention further includes a paper pressing air knife mechanism 40 disposed at the edge of the paper support 10, the paper pressing air knife mechanism 40 includes a centrally vertically disposed lifting cylinder 400, a guide rod of the lifting cylinder 400 is fixed to a mounting plate, two ends of the mounting plate respectively fix a rotating paper pressing cylinder set, the rotating paper pressing cylinder set includes a rotating cylinder 401 and a paper pressing member 402, and after the top layer paper is twisted out, the rotating cylinder 401 rotates the paper pressing member 402 and presses the lower layer paper. The middle part installation air knife tackle 403 of mounting panel, air knife tackle 403 is used for blowing to the paper, so set up, also can be convenient for during the air admission is sucked up the paper, the paper and the lower floor paper separation of the superiors of being convenient for. It should be noted that the installation position of the air knife group is not limited to the middle part of the installation plate, and the drawings in the specification show only one installation mode.

Unlike the prior art that most of the paper is directly sucked by the suction cup frame 30, the top layer paper is firstly rubbed out onto the supporting plate 203 by the paper rubbing mechanism, so that the lower layer paper is exposed from the other side of the paper rubbing mechanism, when the paper pressing cylinder group is rotated to press the lower layer paper by the paper pressing piece 402, the suction cups move and suck the rubbed out paper, then the heights of the two rows of suction cups rise and the distance in the width direction is shortened, so that the sucked up paper is in a shape of a concave with high edges and high middle, and the shape is also convenient for further assisting in subsequently separating the paper. In the process of lifting the paper, the shaking sucker on the sucker frame 30 shakes continuously to enable the lower layer of paper to fall off, the air knife set blows air towards the lower part of the edge of the paper, and when the paper shakes along with the shaking sucker, the sucked lower layer of paper can fall back to the paper stack more easily, so that the aim of separating the top layer of paper is achieved by the aid of various components and modes. In addition, when the suction tray frame 30 moves the top sheet to a predetermined position, the air knife set stops blowing air, and the rotating cylinder 401 rotates the paper pressing member 402 back to the initial state, as shown in fig. 9, which is a schematic view of the device for separating sheets of paper according to the present invention when the sheets of paper are not pressed, the present invention may also be provided with a paper pushing mechanism to push the lower sheet of paper back to the aligned state, and the above steps are repeated to separate the next top sheet of paper. Except that the suction disc frame 30 sucks the paper after the paper is rubbed out by the paper rubbing mechanism, the paper sucking position of the suction disc frame 30 is the edge of the paper, so that the shape that the edge of the paper is higher than the middle of the paper and is concave can be conveniently formed, most importantly, the edge of the paper is sucked, air can also enter the paper, and the paper on the lower layer is not easy to adhere to the paper on the top layer when the suction disc sucks the paper, so that the paper is more suitable for the automatic production process of a large-area circuit printed board, and the common device and method for sucking the small-size paper are not suitable for automatically placing packing paper on the large-area circuit printed board.

It should be noted that, in the foregoing embodiment, each included module is only divided according to functional logic, but is not limited to the above division as long as the corresponding function can be implemented; in addition, specific names of the functional units are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present invention. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. An apparatus for separating paper comprising: the paper carrying table is used for placing stacked paper, a sucker frame which sucks up the paper at the edge of the width direction is arranged above the paper carrying table, the positions of the sucker frame in the horizontal direction and the vertical direction can be adjusted, and the distance between two rows of suckers on the width direction can be adjusted.

2. The device for separating paper sheets as claimed in claim 1, wherein the suction cup frame comprises a main beam in the middle, at least one end of the main beam is obliquely provided with a lifting cylinder, the side of the cylinder barrel of the lifting cylinder faces upwards and the inner side of the suction cup frame, and the piston rod of the lifting cylinder is fixed with the suction cup assembly.

3. The device for separating paper according to claim 1, wherein the suction cup frame comprises a main beam in the middle, at least one end of the main beam is horizontally provided with a telescopic cylinder, the side of the cylinder barrel of the telescopic cylinder faces the inner side of the suction cup frame, and a piston rod of the telescopic cylinder is fixed with the suction cup assembly.

4. A device for separating sheets of paper as claimed in claim 2 or 3, wherein the suction cup assembly comprises a suction duct, a plurality of paper suction cups, at least one shaking cup, the shaking cup comprising a shaking cylinder and a vacuum cup, the shaking cylinder being operative to shake the vacuum cup in a vertical direction.

5. The device for separating the paper sheets according to claim 4, wherein a paper twisting mechanism for twisting out the top paper sheets is installed on one side of the paper carrying table, the paper twisting mechanism comprises a paper twisting wheel for twisting out the top paper sheets, a paper twisting cylinder group for adjusting the position of the paper twisting wheel, and a supporting plate for supporting the top paper sheets is arranged below the paper twisting wheel.

6. The apparatus for separating paper of claim 5, comprising a paper pressing air knife mechanism arranged at the edge of the paper carrying platform, wherein the paper pressing air knife mechanism comprises a centrally vertically arranged lifting cylinder, a guide rod of the lifting cylinder is fixed with a mounting plate, two ends of the mounting plate are respectively fixed with a rotary paper pressing air cylinder group, and an air knife group is arranged in the middle of the mounting plate and used for blowing air to the paper.

7. The apparatus for separating paper of claim 6 wherein the rotary platen cylinder includes a rotary cylinder, a platen, and the rotary cylinder rotates the platen and presses the lower paper after the top paper is twisted out.

8. The apparatus for separating sheets of paper as claimed in claim 7, wherein a lift mechanism is provided below the sheet support to adjust the height of the sheet support.

9. The apparatus for separating paper of claim 8, wherein the paper support is provided with a flapper for restricting the position of the paper.