CN113573483B - Automatic pre-stacking equipment for PCB (printed circuit board) brown plates - Google Patents

Abstract

The invention discloses automatic pre-stacking equipment for a PCB brown oxidation plate; belongs to the technical field of PCB manufacture; the technical key points of the device are that the device comprises a case, wherein an operation port is arranged on one side surface of the case along the length direction, a pre-stacking station is arranged in the case corresponding to the operation port, and a pre-stacking platform is arranged in the pre-stacking station; PP sheet stacking and storing stations and browning plate stacking and storing stations are arranged on two sides of the pre-stacking station; a PP sheet stacking table is arranged in the PP sheet stacking and storing station, and a browning plate stacking table is arranged in the browning plate stacking and storing station; a horizontal driving mechanism is arranged in the case, and a lifting type vacuum adsorption unit matched with each station is connected to the horizontal driving mechanism; the lifting type vacuum adsorption unit sequentially adsorbs and conveys the PP sheets on the PP sheet stacking table and the browning plates on the browning plate stacking table to a pre-stacking table for stacking; the invention aims to provide automatic pre-stacking equipment for PCB brown plates, which has the advantages of compact structure, high working efficiency and low pre-stacking error rate; is used for automatic pre-stacking of the browning plates.

Description

Automatic pre-stacking equipment for PCB (printed circuit board) brown plates

Technical Field

The invention relates to PCB production equipment, in particular to automatic pre-stacking equipment for PCB brown oxidation plates.

Background

In the PCB manufacturing process, the browning plate and the PP sheet are required to be pre-stacked according to the requirement, and then the PCB semi-finished product is formed by typesetting and pressing. In the prior art, a manual mode is often adopted for pre-stacking, and the operation mode has the disadvantages of low working efficiency and high labor intensity of workers, and moreover, the situations that PP sheets are more or less due to working operation errors or negligence and the like easily occur, and the semi-finished products which are subsequently processed are scrapped. In the probability of abnormal conditions, the PP sheets are mainly placed, because the PP sheets are thin and easy to adhere, when a worker takes the sheets, if the worker does not pay attention to the sheets, the problem that the plurality of sheets are taken out at one time is very easy to occur.

Disclosure of Invention

The invention aims to provide automatic pre-stacking equipment for PCB brown plates, which has the advantages of compact structure, high working efficiency and low pre-stacking error rate, aiming at overcoming the defects of the prior art.

The technical scheme of the invention is realized as follows: the utility model provides an automatic equipment of folding in advance of PCB brown oxidation board, includes quick-witted case, a side of machine case along length direction is provided with the operation mouth, is the station of folding in advance in the quick-witted incasement that the operation mouth corresponds, is provided with the platform of folding in advance in the station of folding in advance.

PP sheet stacking and storing stations and browning plate stacking and storing stations are arranged on two sides of the pre-stacking station along the length direction of the case; and a PP sheet stacking platform is arranged in the PP sheet stacking and storing station, and a browning plate stacking platform is arranged in the browning plate stacking and storing station.

A horizontal driving mechanism is arranged at the upper part in the case along the length direction, and a lifting type vacuum adsorption unit matched with each station is connected to the horizontal driving mechanism; the lifting type vacuum adsorption unit moves among stations according to a preset command, and sequentially adsorbs and conveys the PP sheets on the PP sheet stacking table and the brown oxidation plates on the brown oxidation plate stacking table to the pre-stacking table for stacking.

In the automatic pre-stacking equipment of PCB palm oxidation board, the PP piece is piled up the storage station and is piled up storage station and second PP piece by first PP piece and pile up storage station and constitute, piles up storage station and second PP piece at first PP piece and all is equipped with the PP piece that the structure is the same and stacks the platform in the storage station.

First PP piece piles up the station and second PP piece piles up the station and is located prestack station both sides respectively, palm ization board piles up the station and piles up the station outside second PP piece piles up the station.

The pre-stacking station, the first PP sheet stacking and storing station, the second PP sheet stacking and storing station and the brown oxidation plate stacking and storing station are arranged side by side in the length direction of the case at equal intervals.

In the automatic pre-stacking equipment for the PCB brown plates, the lifting type vacuum adsorption unit consists of two groups of lifting type vacuum adsorption devices which are arranged side by side and have the same structure; the horizontal driving mechanism drives the two groups of lifting vacuum adsorption devices to move synchronously;

the lifting type vacuum adsorption device comprises a first lifting mechanism arranged vertically and a vacuum adsorption mechanism connected with the first lifting mechanism; when the workpiece of the corresponding station needs to be adsorbed, the first lifting mechanism drives the vacuum adsorption mechanism to descend for adsorption.

In the automatic pre-stacking equipment for the PCB browning plates, the first lifting mechanism comprises a first horizontal mounting plate fixedly connected with the horizontal driving mechanism, a first mounting frame is fixedly connected to the first horizontal mounting plate along the vertical direction, and a lifting driving cylinder is arranged on the first mounting frame along the vertical direction;

the side edge of the lifting driving air cylinder is parallelly provided with a first guide rail, the first guide rail is connected with a first lifting seat in a sliding manner, and the first lifting seat is connected and linked with the free end of a piston rod of the lifting driving air cylinder through a first connecting plate.

Be provided with angle rotating assembly on first lift seat, angle rotating assembly's power take off end is connected with the pivot, the pivot is connected with vacuum adsorption mechanism.

When the vacuum adsorption mechanism adsorbs a workpiece and needs to rotate by an angle, the angle rotating assembly drives the rotating shaft to rotate; when the vacuum adsorption mechanism loosens the workpiece, the angle rotating assembly drives the rotating shaft to reset.

In the automatic equipment of folding in advance of foretell PCB brown oxidation board, angle rotating assembly drives the cylinder including the rotation of following vertical setting at first lift seat upper portion proximal end, is connected with the direction box at the rotation and drives the cylinder piston rod free end, is provided with the direction stop collar with direction box matched with on the first lift seat in the direction box outside, the section outline of direction box horizontal direction is the polygon.

The two opposite side surfaces of the guide box are oppositely provided with mounting holes, first bearings are arranged in the mounting holes, and a guide rod is connected between the two first bearings.

The rotating shaft is rotatably connected to the first lifting seat through a shaft seat, a spiral sleeve is fixedly connected to the upper end of the rotating shaft, and a spiral guide notch matched with the guide rod is formed in the upper end of the spiral sleeve; when the rotary driving cylinder drives the guide box to move up and down, the guide rod is matched with the guide notch to drive the rotating shaft to rotate.

In the automatic pre-stacking equipment for the PCB browning plates, the vacuum adsorption mechanism comprises a cross beam fixedly connected with the first lifting mechanism, at least three mounting beams are distributed on the cross beam at intervals along the length direction, and a plurality of vacuum suckers are distributed on the mounting beams at intervals along the length direction.

The mounting beams positioned at the two ends of the cross beam are connected with a second lifting mechanism; when the first lifting mechanism drives the vacuum adsorption mechanism to descend to adsorb a workpiece, the second lifting mechanism firstly acts to drive the mounting beams at two ends to ascend so as to pre-lift two ends of the workpiece, and then the first lifting mechanism drives the vacuum adsorption mechanism to ascend.

In foretell PCB palm ization board is automatic to fold equipment in advance, second elevating system is provided with first lift cylinder including fixing on the crossbeam and with the second horizontal installation board that crossbeam mutually perpendicular set up on the second horizontal installation board that the crossbeam corresponds, first lift cylinder piston rod free end is connected with the crane, crane and the installation roof beam fixed connection that corresponds.

And a guide rod and a first guide sleeve which are matched with each other are arranged between the second horizontal mounting plate on two sides of the first lifting cylinder and the lifting frame.

In the automatic pre-stacking equipment for the PCB browning plates, the pre-stacking table comprises a vertical support plate vertically fixed on the chassis framework, a third lifting mechanism is arranged on the vertical support plate, and the pre-stacking plate is detachably arranged on the third lifting mechanism.

A transfer device connected with the next process is arranged below the pre-laminated plate; when the PP sheet and the browning plate are pre-stacked on the pre-stacking plate, the third lifting mechanism descends, and the pre-stacking plate is moved to the transfer device to be conveyed to the next procedure.

In the automatic pre-stacking equipment for the PCB brown oxidation plates, the third lifting mechanism comprises a first lifting screw rod which is vertically arranged on the back of the vertical support plate through a shaft seat, and the first lifting screw rod is connected with a first driving motor; the vertical support plates on two sides of the first lifting screw rod are vertically provided with abdication long holes, a second lifting seat in threaded connection with the first lifting screw rod is sleeved on the vertical support plate between the abdication long holes, the vertical support plates on two sides of the first lifting screw rod are connected with guide posts through shaft seats, and the second lifting seat is movably connected with the guide posts through sliding sleeves;

and a plurality of mutually parallel cantilevers are arranged on the outer end face of the second lifting seat positioned in front of the vertical support plate at intervals along the horizontal direction, and the pre-stacked plate is placed on the cantilevers.

The transfer device is a transfer car, and a guide roller set matched with the transfer car is arranged on a chassis framework in the operation port; and a yielding port matched with each cantilever is arranged on a bracket of the transfer car bearing the pre-laminated plate.

In the automatic pre-stacking equipment for the PCB browning plates, the upper end of the vertical support plate is provided with the PP sheet single-piece detection mechanism, the PP sheet single-piece detection mechanism comprises a support fixed to the upper end of the vertical support plate, a second guide rail is arranged on the support in the moving direction of the vertical horizontal driving mechanism, the second guide rail is connected with a second mounting rack which is horizontally placed and is U-shaped through a sliding block, and the free end of the second mounting rack is provided with the thickness sensor.

Keep away from the one end fixedly connected with linkage piece of opening at the second mounting bracket, linkage piece free end is connected with the response post, be provided with on the support with response post matched with displacement sensor.

A synchronous pulley group is arranged on a support at the side edge of the linkage block, and one synchronous pulley of the synchronous pulley group is connected with a servo motor; the linkage block is fixedly connected with a synchronous belt on the synchronous belt wheel set.

When the thickness of the PP sheet needs to be detected, the servo motor and the synchronous pulley set are matched to drive the second mounting rack to extend out to the pre-stacking area, the thickness of the PP sheet on the lifting type vacuum adsorption unit which is just moved to the pre-stacking area is detected, and the number of the PP sheets is confirmed to be one; after the detection is finished, the servo motor and the synchronous belt wheel drive the second mounting frame to move backwards, and when the displacement sensor detects the induction column, the servo motor stops rotating.

In the automatic pre-stacking equipment for the PCB brownification plates, the PP sheet stacking table comprises a mounting bottom plate arranged on the chassis framework, a second lifting screw rod is vertically arranged on the mounting bottom plate, and a second driving motor connected and linked with the second lifting screw rod is arranged on the mounting bottom plate.

The second lifting screw rod is in threaded connection with a lifting plate, a plurality of connecting rods are vertically arranged on the periphery of the lifting plate, and the upper end of each connecting rod is connected with a stacking plate.

Guide upright posts are respectively arranged on the mounting bottom plates on two sides of the second lifting screw rod, and second guide sleeves which are matched with the guide upright posts in a one-to-one correspondence mode are fixedly connected to the lifting plate.

The upper end of the guide upright post is connected with a third horizontal mounting plate, the third horizontal mounting plate is connected with a plurality of positioning rods which are vertically arranged through positioning adjusting mechanisms, the stacking plate is provided with adjusting long holes which are in one-to-one correspondence with the positioning rods, and the adjusting long holes are arranged along the adjusting direction of the corresponding positioning rods; the structure of the PP sheet stacking table is the same as that of the brown oxidation plate stacking table.

In the automatic pre-stacking device for the PCB brown plates, the positioning rods comprise a plurality of transverse positioning rods and a plurality of longitudinal positioning rods; the positioning adjusting mechanism comprises a plurality of positioning blocks fixed on a third horizontal mounting plate, at least two first guide rods are fixedly arranged on the positioning blocks in parallel at intervals, first positioning sliding blocks are movably sleeved at two ends of each first guide rod respectively, and each transverse positioning rod is arranged at the proximal end parts of two ends of each first positioning sliding block along the length direction.

Guide rod groups are symmetrically arranged on the positioning blocks on the left side and the right side of the first guide rod along the length direction, and each guide rod group is respectively vertical to the first guide rod and consists of at least two second guide rods which are parallel and arranged at intervals; the linkage adjusting blocks are sleeved on the guide rod groups, hinge shafts are arranged in the middle of the two first positioning sliding blocks and the middle of the two linkage adjusting blocks, and linkage rods are connected between the hinge shafts of the two first positioning sliding blocks and the hinge shafts of the two linkage adjusting blocks.

And a third guide rod is arranged above the second guide rod in parallel and is fixedly connected with the second guide rod through a second connecting plate.

And second positioning sliding blocks are symmetrically sleeved on two sides of the third guide rod, and the longitudinal positioning rod is arranged on each second positioning sliding block.

In the automatic pre-stacking equipment for the PCB brownification plates, the horizontal driving mechanism comprises a chute fixed on a framework at the top of the case, a horizontal screw rod is connected to the chute along the length direction through a shaft seat, and a third driving motor is connected to one end of the horizontal screw rod.

The horizontal screw rod is in threaded connection with a sliding block, the sliding block is connected with a fourth horizontal mounting plate, and the lifting type vacuum adsorption unit is fixedly connected with the fourth horizontal mounting plate; and a line concentration box is fixedly connected to the side edge of the fourth horizontal mounting plate, the line concentration box is connected with a drag chain, and each line enters the line concentration box through the drag chain.

After the structure is adopted, the pre-stacking station is arranged in the case, the PP stacking storage station and the brown oxidation plate stacking storage station are arranged on the side edge of the pre-stacking station, and the lifting type vacuum adsorption unit is driven by the horizontal driving mechanism to carry out real-home adsorption on the PP sheets on the PP stacking storage station and the brown oxidation sheets on the brown oxidation plate stacking storage station and then move to the pre-stacking station for pre-stacking. The whole operation realizes automatic operation, thereby not only greatly reducing the labor intensity of workers, but also obviously improving the working efficiency.

Drawings

The invention will be further described in detail with reference to examples of embodiments shown in the drawings to which, however, the invention is not restricted.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of FIG. 1 with the chassis removed;

FIG. 3 is a schematic view of the structure of FIG. 2 at another angle;

FIG. 4 is an exploded view of the horizontal drive mechanism of the present invention;

FIG. 5 is an enlarged partial schematic view at A of FIG. 4;

FIG. 6 is a schematic view of the internal structure of FIG. 4;

FIG. 7 is a schematic view of the elevating vacuum adsorption apparatus according to the present invention;

FIG. 8 is a second schematic view of the elevating vacuum adsorption apparatus of the present invention;

FIG. 9 is a schematic structural view of a second lift mechanism of the present invention;

FIG. 10 is an exploded view of the angular rotation assembly of the present invention;

FIG. 11 is a schematic view of the assembly structure of the screw sleeve and the rotating shaft according to the present invention;

FIG. 12 is a schematic view of the assembled structure of the pre-stack table and the transfer device of the present invention;

FIG. 13 is an exploded view of the pre-stack station and transfer apparatus of the present invention;

FIG. 14 is an exploded view of the PP sheet detecting mechanism of the invention;

FIG. 15 is an enlarged partial schematic view at B of FIG. 14;

FIG. 16 is a schematic structural view of a PP sheet stacking station of the invention;

fig. 17 is a schematic structural view of the positioning adjustment mechanism of the present invention.

In the figure: 1. a chassis; 1a, a guide roller set; 2. a pre-stacking table; 2a, erecting a support plate; 2b, a third lifting mechanism; 2c, pre-stacking plates; 2d, a first lifting screw rod; 2e, a first driving motor; 2f, yielding slot holes; 2g, a second lifting seat; 2h, a guide post; 2i, a cantilever; 3. a PP sheet stacking table; 3a, mounting a bottom plate; 3b, a second lifting screw rod; 3c, a second driving motor; 3d, a lifting plate; 3e, a connecting rod; 3f, stacking plates; 3g, guiding the upright post; 3h, a second guide sleeve; 3i, a third horizontal mounting plate; 3j, adjusting the long hole; 3k, a transverse positioning rod; 3l, longitudinal positioning rod; 4. a brown plate stacking table; 5. a horizontal driving mechanism; 5a, a chute; 5b, a horizontal screw rod; 5c, a third driving motor; 5d, a sliding block; 5e, a fourth horizontal mounting plate; 5f, a wire collecting box; 5g, drag chain; 6. a lifting vacuum adsorption device; 7. a first lifting mechanism; 7a, a first horizontal mounting plate; 7b, a first mounting frame; 7c, a lifting driving cylinder; 7d, a first guide rail; 7e, a first lifting seat; 7f, a first connecting plate; 7g, a rotating shaft; 7h, shaft seat; 8. a vacuum adsorption mechanism; 8a, a cross beam; 8b, mounting a beam; 8c, vacuum chuck; 8d, a second lifting mechanism; 8e, a second horizontal mounting plate; 8f, a first lifting cylinder; 8g, a lifting frame; 8h, a guide rod; 8i, a first guide sleeve; 9. an angle rotation assembly; 9a, rotating the driving cylinder; 9b, a guide box; 9c, a guide limit sleeve; 9d, a first bearing; 9e, a guide rod; 9f, a spiral sleeve; 9g, a guide notch; 10. a transfer device; 11. a PP sheet single detection mechanism; 11a, a support; 11b, a second mounting rack; 11c, a thickness sensor; 11d, a linkage block; 11e, an induction column; 11f, a displacement sensor; 11g, synchronous pulley sets; 11h, a servo motor; 12. a positioning adjustment mechanism; 12a, a positioning block; 12b, a first guide bar; 12c, a first positioning slider; 12d, a second guide bar; 12e, a linkage adjusting block; 12f, a linkage rod; 12g, a third guide bar; 12h, a second connecting plate; 12i, a second positioning slider; 13. an induction block; 14. a correlation photoelectric sensor.

Detailed Description

Referring to fig. 1 to 3, the automatic pre-stacking apparatus for PCB brown plates of the present invention includes a case 1, wherein the case mainly plays a role of protection, and the structure of the case may be determined according to requirements. In this embodiment, the machine case upside is provided with transparent glass door along circumference, can be convenient for observe the inside condition. An operation opening is formed in one side face of the case 1 in the length direction, a pre-stacking station is arranged in the case 1 corresponding to the operation opening, and a pre-stacking platform 2 is arranged in the pre-stacking station.

PP sheet stacking and storing stations and browning plate stacking and storing stations are arranged on two sides of the pre-stacking station along the length direction of the case 1; a PP sheet stacking table 3 is arranged in the PP sheet stacking and storing station, and a brown oxidation plate stacking table 4 is arranged in the brown oxidation plate stacking and storing station.

A horizontal driving mechanism 5 is arranged at the upper part in the case 1 along the length direction, and a lifting type vacuum adsorption unit matched with each station is connected to the horizontal driving mechanism 5; the lifting type vacuum adsorption unit moves among stations according to preset commands, and sequentially adsorbs and conveys the PP sheets on the PP sheet stacking table 3 and the brown oxidation plates on the brown oxidation plate stacking table 4 to the pre-stacking table 2 for stacking.

Preferably, the PP sheet stacking and storing station consists of a first PP sheet stacking and storing station and a second PP sheet stacking and storing station, and PP sheet stacking tables 3 with the same structure are arranged in the first PP sheet stacking and storing station and the second PP sheet stacking and storing station;

first PP piece piles up the station and second PP piece piles up the station and is located prestack station both sides respectively, palm ization board piles up the station and piles up the station outside second PP piece piles up the station.

The pre-stacking station, the first PP sheet stacking and storing station, the second PP sheet stacking and storing station and the brown oxidation plate stacking and storing station are arranged side by side in the length direction of the case 1 at equal intervals.

The lifting vacuum adsorption units are matched with the stations in an equidistant arrangement, and each lifting vacuum adsorption unit consists of two groups of lifting vacuum adsorption devices 6 which are arranged side by side and have the same structure; the horizontal driving mechanism 5 drives the two groups of lifting vacuum adsorption devices 6 to move synchronously. The distance between the two groups of lifting vacuum adsorption devices 6 is the same as the distance between two adjacent stations. The structure can randomly carry out the operation of picking or placing the workpieces at two stations or a single station, and can obviously improve the working efficiency.

The lifting type vacuum adsorption device 6 comprises a first lifting mechanism 7 arranged vertically and a vacuum adsorption mechanism 8 connected with the first lifting mechanism 7; when the thin assembly of the corresponding station needs to be adsorbed, the first lifting mechanism 7 drives the vacuum adsorption mechanism 8 to descend for adsorption.

The preferred structure of each device and mechanism will be described in further detail below:

referring to fig. 4 to 6, preferably, the horizontal driving mechanism 5 includes a sliding slot 5a fixed on the top frame of the chassis 1, a horizontal screw rod 5b connected to the sliding slot 5a along the length direction through a shaft seat, and a third driving motor 5c connected to one end of the horizontal screw rod 5 b.

The horizontal screw rod 5b is in threaded connection with a sliding block 5d, the sliding block 5d is connected with a fourth horizontal mounting plate 5e, and the lifting type vacuum adsorption device 6 is fixedly connected with the fourth horizontal mounting plate 5 e; a wire collecting box 5f is fixedly connected to the side edge of the fourth horizontal mounting plate 5e, the wire collecting box 5f is connected with a drag chain 5g, and all lines enter the wire collecting box 5f through the drag chain.

In order to ensure that the sliding block moves smoothly, sliding rails matched with the sliding block are arranged in the sliding grooves on the two sides of the horizontal screw rod. In this embodiment, in order to control the moving position of the sliding block, an induction block 13 is disposed on one side of the sliding block, and a corresponding correlation photoelectric sensor 14 is disposed on the sliding chute according to the corresponding position of each station to control the start and stop of the third driving motor. Of course, other sensors commonly used in the art may be used, such as infrared correlation sensors, non-contact proximity switches, and the like. These are all common knowledge to the person skilled in the art. Meanwhile, the installation mode and the working principle of the correlation type photoelectric sensor are the prior art, which are not the technical points to be protected by the invention, and are not described herein again.

Referring to fig. 7 to 9, preferably, the first lifting mechanism 7 includes a first horizontal mounting plate 7a fixedly connected to the horizontal driving mechanism 5, a first mounting bracket 7b fixedly connected to the first horizontal mounting plate 7a along a vertical direction, and a lifting driving cylinder 7c vertically disposed on the first mounting bracket 7 b.

A first guide rail 7d is arranged on the side edge of the lifting driving cylinder 7c in parallel, a first lifting seat 7e is connected to the first guide rail 7d in a sliding manner, and the first lifting seat 7e is connected and linked with the free end of a piston rod of the lifting driving cylinder 7c through a first connecting plate 7 f;

be provided with angle rotating assembly 9 on first lift seat 7e, angle rotating assembly 9's power take off end is connected with pivot 7g, pivot 7g is connected with vacuum adsorption mechanism 8.

When the vacuum adsorption mechanism 8 adsorbs the thin component and needs to rotate the angle, the angle rotation component 9 drives the rotating shaft 7g to rotate; when the vacuum adsorption mechanism 8 loosens the thin component, the angle rotation component 9 drives the rotating shaft 7g to reset. The design of the angle rotating assembly 9 enables adjacent pre-stacked pieces to be staggered by a certain angle relatively, so that the adjacent two groups of pre-stacked pieces are ensured not to interfere, and stacking of multiple groups of pre-stacked pieces is facilitated.

Referring to fig. 10 and 11, it is further preferable that the angle rotating assembly 9 includes a rotation driving cylinder 9a vertically disposed at a proximal end of an upper portion of the first lifting seat 7e, a guide box 9b is connected to a free end of a piston rod of the rotation driving cylinder 9a, a guide limit sleeve 9c matched with the guide box 9b is disposed on the first lifting seat 7e outside the guide box 9b, and a cross-sectional outer contour of the guide box 9b in a horizontal direction is polygonal.

Mounting holes are oppositely formed in two opposite side surfaces of the guide box 9b, first bearings 9d are arranged in the mounting holes, and a guide rod 9e is connected between the two first bearings 9 d.

The rotating shaft 7g is rotatably connected to the first lifting seat 7e through a shaft seat 7h, a spiral sleeve 9f is fixedly connected to the upper end of the rotating shaft 7g, and a spiral guide notch 9g matched with the guide rod 9e is formed in the upper end of the spiral sleeve 9 f.

When the rotary driving cylinder 9a drives the guide box 9b to move up and down, the guide rod 9e is matched with the guide notch 9g to drive the rotating shaft 7g to rotate.

The telescopic motion of the rotary driving cylinder is skillfully matched with the guide box, the guide limiting sleeve, the first bearing and the guide rod, the rotary driving cylinder is accurately converted into the rotary motion of the rotating shaft, and the rotating angle can be accurately controlled. The device has the advantages of compact structure, low failure rate and high accuracy.

Referring to fig. 8 and 9, in this embodiment, the vacuum adsorption mechanism 8 includes a cross beam 8a fixedly connected to the first lifting mechanism 7, at least three mounting beams 8b are distributed on the cross beam 8a at intervals along the length direction, and a plurality of vacuum suction cups 8c are distributed on the mounting beams 8b at intervals along the length direction.

The mounting beams 8b positioned at the two ends of the cross beam 8a are connected with a second lifting mechanism 8 d; after the first lifting mechanism 7 drives the vacuum adsorption mechanism 8 to descend and adsorb the thin component, the second lifting mechanism 8d firstly acts to drive the mounting beams 8b at the two ends to ascend so as to lift the two ends of the thin component in advance, and then the first lifting mechanism 7 drives the vacuum adsorption mechanism 8 to ascend.

Further preferably, the second lifting mechanism 8d comprises a second horizontal mounting plate 8e which is fixed on the cross beam 8a and is perpendicular to the cross beam 8a, a first lifting cylinder 8f is arranged on the second horizontal mounting plate 8e corresponding to the cross beam 8a, the free end of the piston rod of the first lifting cylinder 8f is connected with a lifting frame 8g, and the lifting frame 8g is fixedly connected with the corresponding mounting beam 8 b.

A guide rod 8h and a first guide sleeve 8i which are matched with each other are arranged between the second horizontal mounting plates 8e on the two sides of the first lifting cylinder 8f and the lifting frame 8 g.

Because the PP sheet and the browning plate are both thin, especially the PP sheet is thin and soft, two adjacent sheets are tightly attached, and if the whole PP sheet is directly lifted, the two PP sheets are very easy to lift simultaneously. And the direct whole-piece lifting also has the problem of great resistance, because the adjacent PP sheets are extremely well overlapped to form a vacuum state, and are easy to adhere and be lifted simultaneously. And the two ends of the PP sheet are pre-lifted through the second lifting mechanism, so that the problems can be solved skillfully.

Referring to fig. 12 and 13, in the present embodiment, the pre-stack table 2 includes a vertical support plate 2a vertically fixed on the framework of the chassis 1, a third lifting mechanism 2b is disposed on the vertical support plate 2a, and a pre-stack plate 2c is detachably disposed on the third lifting mechanism 2 b.

A transfer device 10 connected with the next process is arranged below the pre-laminated plate 2 c; when the pre-stacking of the PP sheet and the browning plate is completed on the pre-stacking plate 2c, the third lifting mechanism 2b descends, and the pre-stacking plate 2c is moved to the transfer device 10 to be sent to the next process.

Further preferably, the third lifting mechanism 2b comprises a first lifting screw rod 2d which passes through the shaft seat and is vertically arranged on the back of the vertical support plate 2a, and the first lifting screw rod 2d is connected with a first driving motor 2 e; the vertical support plates 2a on the two sides of the first lifting screw rod 2d are vertically provided with yielding long holes 2f, the vertical support plates 2a between the yielding long holes 2f are sleeved with second lifting seats 2g in threaded connection with the first lifting screw rod 2d, the vertical support plates 2a on the two sides of the first lifting screw rod 2d are connected with guide posts 2h through shaft seats, and the second lifting seats 2g are movably connected with the guide posts 2h through sliding sleeves.

A plurality of mutually parallel cantilevers 2i are arranged on the outer end face of the second lifting seat 2g in front of the vertical support plate 2a at intervals along the horizontal direction, and the pre-stacked plate 2c is placed on the cantilevers 2 i.

The transfer device 10 is a transfer car, and a guiding roller set 1a matched with the transfer car is arranged on a chassis 1 framework in an operation port; and a yielding opening matched with each cantilever 2i is arranged on a bracket of the transfer car bearing the pre-stack plate 2 c.

Other conventional techniques in the art may also be used for the third lifting mechanism, depending on the application. For example, when the transfer device is a conveyor belt connected to the next process, the third lifting mechanism needs to be adjusted according to the installation position of the conveyor belt, and according to the actual situation, an air cylinder or a manipulator is adopted to achieve the technical purpose. It is also an equivalent alternative that can be easily conceived by a person skilled in the art on the basis of the above disclosure.

Further, in order to avoid the situation that PP sheets are stacked and carried in a clamping manner, referring to fig. 14 and 15, a single PP sheet detection mechanism 11 is arranged at the upper end of the vertical support plate 2a, the single PP sheet detection mechanism 11 comprises a support 11a fixed at the upper end of the vertical support plate 2a, a second guide rail is arranged on the support 11a along the moving direction of the vertical horizontal driving mechanism 5, a second mounting frame 11b which is horizontally placed and is in a U shape is connected to the second guide rail through a slider, and a thickness sensor 11c is arranged at the free end of the second mounting frame 11 b.

One end of the second mounting frame 11b far away from the opening is fixedly connected with a linkage block 11d, the free end of the linkage block 11d is connected with an induction column 11e, and a displacement sensor 11f matched with the induction column 11e is arranged on the support 11 a.

A synchronous belt wheel set 11g is arranged on a support 11a on the side edge of the linkage block 11d, and one synchronous belt wheel of the synchronous belt wheel set 11g is connected with a servo motor 11 h; the linkage block 11d is fixedly connected with a synchronous belt on the synchronous belt wheel set 11 g;

when the thickness of the PP sheet needs to be detected, the servo motor 11h and the synchronous pulley set 11g are matched to drive the second mounting rack 11b to extend out to the pre-stacking area, the thickness of the PP sheet on the lifting type vacuum adsorption device 6 which is just moved to the pre-stacking area is detected, and the number of the PP sheets is confirmed to be one; after the detection is finished, the servo motor 11h and the synchronous pulley set 11g drive the second mounting rack 11b to move backwards, and when the displacement sensor 11f detects the induction column 11e, the servo motor 11h stops rotating.

Referring to fig. 16 and 17, in the present embodiment, the PP sheet stacking table 3 includes a mounting bottom plate 3a disposed on the framework of the chassis 1, a second lifting screw 3b is vertically disposed on the mounting bottom plate 3a, and a second driving motor 3c linked with the second lifting screw 3b is disposed on the mounting bottom plate 3 a.

The second lifting screw rod 3b is in threaded connection with a lifting plate 3d, a plurality of connecting rods 3e are vertically arranged on the periphery of the lifting plate 3d, and the upper end of each connecting rod 3e is connected with a stacking plate 3 f.

Guide upright posts 3g are respectively arranged on the mounting bottom plates 3a at two sides of the second lifting screw rod 3b, and second guide sleeves 3h which are in one-to-one corresponding fit with the guide upright posts 3g are fixedly connected to the lifting plate 3 d.

The upper end of the guide upright post 3g is connected with a third horizontal mounting plate 3i, the third horizontal mounting plate 3i is connected with a plurality of positioning rods which are vertically arranged through a positioning adjusting mechanism 12, the stacking plate 3f is provided with adjusting long holes 3j which are in one-to-one correspondence with the positioning rods, and the adjusting long holes 3j are arranged along the adjusting direction of the corresponding positioning rods; the structure of the PP sheet stacking table 3 is the same as that of the browning plate stacking table 4.

The position of the positioning rod can be adjusted by the positioning adjusting mechanism according to the size of the PP sheet or the browning plate, so that the limit of the PP sheet or the browning plate is formed, and the problem that the lower adjacent plate or sheet shifts when the vacuum adsorption is carried out is avoided.

Further preferably, the positioning rod is composed of a plurality of transverse positioning rods 3k and a plurality of longitudinal positioning rods 3 l; through transverse positioning rod and vertical positioning rod, can effectively prevent the aversion of material. The positioning adjusting mechanism 12 includes a plurality of positioning blocks 12a fixed on the third horizontal mounting plate 3i, at least two first guide rods 12b are fixedly arranged on the positioning blocks 12a in parallel and at intervals, first positioning sliding blocks 12c are movably sleeved at two ends of each first guide rod 12b respectively, and each transverse positioning rod 3k is arranged at the proximal end portions of two ends of each first positioning sliding block 12c along the length direction respectively.

Guide rod groups are symmetrically arranged on the positioning blocks 12a on the left side and the right side of the first guide rod 12b along the length direction, and each guide rod group is respectively vertical to the first guide rod 12b and consists of at least two second guide rods 12d which are parallel and arranged at intervals; each guide rod group is sleeved with a linkage adjusting block 12e, hinge shafts are arranged in the middle of each first positioning sliding block 12c and each linkage adjusting block 12e, and a linkage rod 12f is connected between the hinge shafts of the first positioning sliding blocks 12c and the hinge shafts of the linkage adjusting blocks 12 e.

A third guide rod 12g is arranged above the second guide rod 12d in parallel, and the third guide rod 12g is fixedly connected with the second guide rod 12d through a second connecting plate 12 h.

Second positioning slide blocks 12i are symmetrically sleeved on both sides of third guide bar 12g, and longitudinal positioning bars 3l are provided on respective second positioning slide blocks 12 i.

Because the adjusting long holes are symmetrically arranged on the stacking plate 3f, the synchronous movement of the transverse positioning rod can be ensured through the arrangement of the linkage rod and the linkage adjusting block, so that the material on the stacking plate can not shift transversely, and the accuracy in the vacuum adsorption movement process is facilitated.

Simultaneously, in this embodiment, for improving degree of automation, stack the platform mesa side at pre-stack platform, PP piece and palm board and all be provided with the infrared correlation sensor that detects each bench material up end, its effect makes the up end of each mesa material remain on same plane all the time, is favorable to over-and-under type vacuum adsorption device's work. Of course, if there is no infrared correlation sensor, the skilled person can also make the elevation type vacuum adsorption device perform height compensation at each movement according to the thickness of the material moved each time. This is all a routine technical measure in the art.

And photoelectric sensors for detecting whether the table tops have materials are arranged on the PP sheet stacking table and the browning plate stacking table and are arranged in mounting holes of the middle stacking area of each table top. Meanwhile, electromagnetic induction type non-contact proximity switches for controlling the upper limit and the lower limit of the detection lifting plate are vertically arranged on the side edges of the pre-stacking table, the PP sheet stacking table and the browning plate stacking table. And the proximity switches of the upper limit and the lower limit are arranged side by side, the lowest proximity switch or the uppermost proximity switch plays a role of safety, and when the proximity switch normally used for controlling the starting and stopping of the motor is damaged, the lifting plate continues to move upwards or downwards and contacts the uppermost proximity switch or the lowermost proximity switch, the motor is forcibly stopped and an error is reported.

The use of the above sensors is common knowledge in the art, and the connection manner and the operation principle thereof are not the technical points to be protected in the present invention, and are not described herein again.

The above-mentioned embodiments are only for convenience of description, and are not intended to limit the present invention in any way, and those skilled in the art will understand that the technical features of the present invention can be modified or changed by other equivalent embodiments without departing from the scope of the present invention.

Claims (12)

1. An automatic pre-stacking device for PCB brown plates comprises a case (1) and is characterized in that an operation port is formed in one side surface of the case (1) along the length direction, a pre-stacking station is arranged in the case (1) corresponding to the operation port, and a pre-stacking table (2) is arranged in the pre-stacking station;

PP sheet stacking and storing stations and brown oxidation plate stacking and storing stations are arranged on two sides of the pre-stacking station along the length direction of the case (1); a PP sheet stacking table (3) is arranged in the PP sheet stacking and storing station, and a brown oxidation plate stacking table (4) is arranged in the brown oxidation plate stacking and storing station;

a horizontal driving mechanism (5) is arranged at the upper part in the case (1) along the length direction, and a lifting type vacuum adsorption unit matched with each station is connected to the horizontal driving mechanism (5); the lifting type vacuum adsorption unit moves among stations according to a preset command, and sequentially adsorbs and conveys the PP sheets on the PP sheet stacking table (3) and the brown oxidation plates on the brown oxidation plate stacking table (4) to the pre-stacking table (2) for stacking;

the PP sheet stacking table (3) comprises a mounting bottom plate (3a) arranged on a framework of the case (1), a second lifting screw rod (3b) is vertically arranged on the mounting bottom plate (3a), and a second driving motor (3c) connected and linked with the second lifting screw rod (3b) is arranged on the mounting bottom plate (3 a);

a lifting plate (3d) is connected to the second lifting screw rod (3b) in a threaded manner, a plurality of connecting rods (3e) are vertically arranged on the periphery of the lifting plate (3d), and a stacking plate (3f) is connected to the upper end of each connecting rod (3 e);

guide upright posts (3g) are respectively arranged on the mounting bottom plates (3a) at two sides of the second lifting screw rod (3b), and second guide sleeves (3h) which are in one-to-one corresponding fit with the guide upright posts (3g) are fixedly connected to the lifting plate (3 d);

the upper end of the guide upright post (3g) is connected with a third horizontal mounting plate (3i), the third horizontal mounting plate (3i) is connected with a plurality of positioning rods which are vertically arranged through a positioning adjusting mechanism (12), the stacking plate (3f) is provided with adjusting long holes (3j) which are in one-to-one correspondence with the positioning rods, and the adjusting long holes (3j) are arranged along the adjusting direction of the corresponding positioning rods;

the structure of the PP sheet stacking table (3) is the same as that of the browning plate stacking table (4).

2. The automatic pre-stacking equipment for the PCB brown oxidation plates, as recited in claim 1, is characterized in that the PP sheet stacking and storing station is composed of a first PP sheet stacking and storing station and a second PP sheet stacking and storing station, and PP sheet stacking tables (3) with the same structure are arranged in the first PP sheet stacking and storing station and the second PP sheet stacking and storing station;

the first PP sheet stacking storage station and the second PP sheet stacking storage station are respectively positioned on two sides of the pre-stacking station, and the browning plate stacking storage station is positioned on the outer side of the second PP sheet stacking storage station;

the pre-stacking station, the first PP sheet stacking storage station, the second PP sheet stacking storage station and the browning plate stacking storage station are arranged side by side in the length direction of the case (1) at equal intervals.

3. The automatic pre-stacking equipment for the PCB brown oxidation plates, according to the claim 1, is characterized in that the lifting type vacuum adsorption unit consists of two groups of lifting type vacuum adsorption devices (6) which are arranged side by side and have the same structure; the horizontal driving mechanism (5) drives the two groups of lifting vacuum adsorption devices (6) to move synchronously;

the lifting type vacuum adsorption device (6) comprises a first lifting mechanism (7) arranged vertically and a vacuum adsorption mechanism (8) connected with the first lifting mechanism (7); when the thin components of the corresponding stations need to be adsorbed, the first lifting mechanism (7) drives the vacuum adsorption mechanism (8) to descend for adsorption.

4. The automatic pre-stacking equipment for the PCB brown oxidation plates, according to the claim 3, is characterized in that the first lifting mechanism (7) comprises a first horizontal mounting plate (7a) fixedly connected with the horizontal driving mechanism (5), a first mounting frame (7b) is fixedly connected to the first horizontal mounting plate (7a) along the vertical direction, and a lifting driving cylinder (7c) is arranged on the first mounting frame (7b) along the vertical direction;

a first guide rail (7d) is arranged on the side edge of the lifting driving cylinder (7c) in parallel, a first lifting seat (7e) is connected onto the first guide rail (7d) in a sliding manner, and the first lifting seat (7e) is connected and linked with the free end of a piston rod of the lifting driving cylinder (7c) through a first connecting plate (7 f);

an angle rotating assembly (9) is arranged on the first lifting seat (7e), the power output end of the angle rotating assembly (9) is connected with a rotating shaft (7g), and the rotating shaft (7g) is connected with a vacuum adsorption mechanism (8);

when the vacuum adsorption mechanism (8) adsorbs the thin component and needs to rotate by an angle, the angle rotation component (9) drives the rotating shaft (7g) to rotate; after the vacuum adsorption mechanism (8) loosens the thin component, the angle rotating component (9) drives the rotating shaft (7g) to reset.

5. The automatic pre-stacking equipment for the PCB brown oxidation plates, according to claim 4, is characterized in that the angle rotating assembly (9) comprises a rotating driving cylinder (9a) vertically arranged at the upper proximal end of a first lifting seat (7e), a guide box (9b) is connected to the free end of a piston rod of the rotating driving cylinder (9a), a guide limiting sleeve (9c) matched with the guide box (9b) is arranged on the first lifting seat (7e) at the outer side of the guide box (9b), and the profile of the guide box (9b) in the horizontal direction is polygonal;

mounting holes are oppositely formed in two opposite side surfaces of the guide box (9b), first bearings (9d) are arranged in the mounting holes, and a guide rod (9e) is connected between the two first bearings (9 d);

the rotating shaft (7g) is rotatably connected to the first lifting seat (7e) through a shaft seat (7h), a spiral sleeve (9f) is fixedly connected to the upper end of the rotating shaft (7g), and a spiral guide notch (9g) matched with the guide rod (9e) and in a spiral shape is formed in the upper end of the spiral sleeve (9 f);

when the rotary driving cylinder (9a) drives the guide box (9b) to move up and down, the guide rod (9e) is matched with the guide notch (9g) to drive the rotating shaft (7g) to rotate.

6. The automatic pre-stacking device of the PCB brown oxidation plates according to claim 3, wherein the vacuum adsorption mechanism (8) comprises a cross beam (8a) fixedly connected with the first lifting mechanism (7), at least three mounting beams (8b) are distributed on the cross beam (8a) at intervals along the length direction, and a plurality of vacuum suckers (8c) are distributed on the mounting beams (8b) at intervals along the length direction;

the mounting beams (8b) positioned at the two ends of the cross beam (8a) are connected with a second lifting mechanism (8 d); after the first lifting mechanism (7) drives the vacuum adsorption mechanism (8) to descend to adsorb the thin component, the second lifting mechanism (8d) firstly acts to drive the mounting beams (8b) at the two ends to ascend so as to lift the two ends of the thin component in advance, and then the first lifting mechanism (7) drives the vacuum adsorption mechanism (8) to ascend.

7. The automatic pre-stacking equipment for the PCB brown oxidation plates according to claim 6, wherein the second lifting mechanism (8d) comprises a second horizontal mounting plate (8e) which is fixed on the cross beam (8a) and is perpendicular to the cross beam (8a), a first lifting cylinder (8f) is arranged on the second horizontal mounting plate (8e) corresponding to the cross beam (8a), the free end of a piston rod of the first lifting cylinder (8f) is connected with a lifting frame (8g), and the lifting frame (8g) is fixedly connected with the corresponding mounting beam (8 b);

a guide rod (8h) and a first guide sleeve (8i) which are matched with each other are arranged between the second horizontal mounting plate (8e) at two sides of the first lifting cylinder (8f) and the lifting frame (8 g).

8. The automatic pre-stacking equipment for the PCB brown oxidation plates, as recited in claim 1, is characterized in that the pre-stacking table (2) comprises a vertical support plate (2a) vertically fixed on the framework of the case (1), a third lifting mechanism (2b) is arranged on the vertical support plate (2a), and a pre-stacking plate (2c) is detachably arranged on the third lifting mechanism (2 b);

a transfer device (10) connected with the next process is arranged below the pre-laminated plate (2 c); when the PP sheet and the browning plate are pre-stacked on the pre-stacking plate (2c), the third lifting mechanism (2b) descends, and the pre-stacking plate (2c) is moved to the transfer device (10) to be conveyed to the next process.

9. The automatic pre-stacking equipment for the PCB brown oxidation plates, as recited in claim 8, characterized in that the third lifting mechanism (2b) comprises a first lifting screw rod (2d) which is vertically arranged on the back of the vertical support plate (2a) through a shaft seat, the first lifting screw rod (2d) is connected with a first driving motor (2 e); the lifting device is characterized in that abdicating long holes (2f) are vertically formed in vertical support plates (2a) on two sides of a first lifting screw rod (2d), a second lifting seat (2g) in threaded connection with the first lifting screw rod (2d) is sleeved on the vertical support plate (2a) between the abdicating long holes (2f), guide posts (2h) are connected to the vertical support plates (2a) on two sides of the first lifting screw rod (2d) through shaft seats, and the second lifting seat (2g) is movably connected with the guide posts (2h) through sliding sleeves;

a plurality of cantilevers (2i) which are parallel to each other are arranged on the outer end face of a second lifting seat (2g) which is positioned in front of the vertical support plate (2a) at intervals along the horizontal direction, and the pre-laminated plate (2c) is placed on the cantilevers (2 i);

the transfer device (10) is a transfer car, and a guide roller set (1a) matched with the transfer car is arranged on a chassis (1) framework in the operation port; the bracket of the transfer car for bearing the pre-stack plate (2c) is provided with abdicating openings matched with the cantilevers (2 i).

10. The automatic pre-stacking equipment for the PCB brown oxidation plates according to claim 8, wherein a PP sheet single-sheet detection mechanism (11) is arranged at the upper end of the vertical support plate (2a), the PP sheet single-sheet detection mechanism (11) comprises a support (11a) fixed at the upper end of the vertical support plate (2a), a second guide rail is arranged on the support (11a) along the moving direction vertical to the horizontal driving mechanism (5), a second mounting frame (11b) which is horizontally placed and U-shaped is connected to the second guide rail through a sliding block, and a thickness sensor (11c) is arranged at the free end of the second mounting frame (11 b);

a linkage block (11d) is fixedly connected to one end, far away from the opening, of the second mounting frame (11b), the free end of the linkage block (11d) is connected with an induction column (11e), and a displacement sensor (11f) matched with the induction column (11e) is arranged on the support (11 a);

a synchronous pulley group (11g) is arranged on a support (11a) at the side of the linkage block (11d), and one synchronous pulley of the synchronous pulley group (11g) is connected with a servo motor (11 h); the linkage block (11d) is fixedly connected with a synchronous belt on the synchronous belt wheel set (11 g);

when the thickness of the PP sheet needs to be detected, the servo motor (11h) and the synchronous pulley set (11g) are matched to drive the second mounting rack (11b) to extend out to the pre-stacking area, the thickness of the PP sheet on the lifting type vacuum adsorption device (6) which is just moved to the pre-stacking area is detected, and the number of the PP sheets is confirmed to be one; after the detection is finished, the servo motor (11h) and the synchronous belt wheel set (11g) drive the second mounting rack (11b) to move backwards, and when the displacement sensor (11f) detects the induction column (11e), the servo motor (11h) stops rotating.

11. The automatic pre-stacking device of PCB brown oxidation plates according to claim 1, characterized in that the positioning rod is composed of a plurality of transverse positioning rods (3k) and a plurality of longitudinal positioning rods (3 l); the positioning adjusting mechanism (12) comprises a plurality of positioning blocks (12a) fixed on a third horizontal mounting plate (3i), at least two first guide rods (12b) are fixedly arranged on the positioning blocks (12a) in parallel at intervals, first positioning sliding blocks (12c) are movably sleeved at two ends of each first guide rod (12b), and transverse positioning rods (3k) are respectively arranged at the near end parts of two ends of each first positioning sliding block (12c) along the length direction;

guide rod groups are symmetrically arranged on the positioning blocks (12a) on the left side and the right side of the first guide rod (12b) along the length direction, and each guide rod group is respectively vertical to the first guide rod (12b) and consists of at least two second guide rods (12d) which are parallel and arranged at intervals; linkage adjusting blocks (12e) are sleeved on each guide rod group, hinged shafts are arranged in the middle of the two first positioning sliding blocks (12c) and the two linkage adjusting blocks (12e), and linkage rods (12f) are connected between the hinged shafts of the two first positioning sliding blocks (12c) and the hinged shafts of the two linkage adjusting blocks (12 e);

a third guide rod (12g) is arranged above the second guide rod (12d) in parallel, and the third guide rod (12g) is fixedly connected with the second guide rod (12d) through a second connecting plate (12 h);

and second positioning sliding blocks (12i) are symmetrically sleeved on two sides of the third guide rod (12g), and the longitudinal positioning rod (3l) is arranged on each second positioning sliding block (12 i).

12. The automatic pre-stacking equipment for the PCB brown oxidation plates as claimed in claim 1, wherein the horizontal driving mechanism (5) comprises a chute (5a) fixed on a top frame of the case (1), a horizontal screw rod (5b) is connected in the chute (5a) along the length direction through a shaft seat, and a third driving motor (5c) is connected at one end of the horizontal screw rod (5 b);

the horizontal screw rod (5b) is in threaded connection with a sliding block (5d), the sliding block (5d) is connected with a fourth horizontal mounting plate (5e), and the lifting type vacuum adsorption device (6) is fixedly connected with the fourth horizontal mounting plate (5 e); a wire collecting box (5f) is fixedly connected to the side edge of the fourth horizontal mounting plate (5e), a drag chain (5g) is connected to the wire collecting box (5f), and each line enters the wire collecting box (5f) through the drag chain.

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