An automatic paper feeding mechanism and PCB board automatic stacking and paper separation equipment

Abstract

The present invention discloses an automatic paper feeding mechanism and a PCB board automatic stacking and paper separation device. The automatic paper feeding mechanism comprises a conveying platform, a paper supply device, a paper cutting device, a paper cutting device, a paper suction platform and a paper feeding device arranged on a frame. The conveying platform is located between the paper supply device and the paper feeding device, and the paper cutting device and the paper cutting device are arranged above the conveying platform; the paper cutting device is used to cut the paper into a plurality of strips of paper; the paper cutting device is used to cut the strips of paper into a plurality of independent paper pieces; the paper feeding device comprises a plurality of groups of suction cup assemblies for respectively sucking a plurality of paper pieces, a paper separation assembly for driving the plurality of groups of suction cup assemblies to separate from each other, and a driving module for driving the paper separation assembly to reciprocate between the paper suction platform and the stacking position of the PCB board. This automatic paper feeding mechanism realizes the full automation of the paper cutting, paper separation and paper feeding processes, and can simultaneously load and stack a plurality of groups of PCB boards, greatly improving the efficiency of adding paper separation to the PCB board.

Description

Technical Field

[0001] The present invention relates to the technical field of automatic packaging equipment for PCB boards, and in particular to an automatic paper feeding mechanism and automatic PCB board stacking and paper separation equipment. Background Art

[0002] During the packaging process of PCB boards, paper sheets of the same size as the PCB boards need to be placed between the two layers of PCB boards for isolation. To achieve fully automatic packaging of PCB boards, it is necessary to first design a corresponding paper cutting mechanism to cut the paper into a preset size, and then use a conveying mechanism such as a robot and a suction cup to stack the PCB boards and the cut paper on the receiving mechanism in sequence, and then proceed to the subsequent packaging process.

[0003] When the PCB boards enter the packaging process, the quantity and model specifications of the PCB boards cannot be wrong, so the quantity and model specifications of the PCB boards need to be checked. Many PCB boards also require adding paper between two PCB boards when they are packaged. At present, most manufacturers manually complete the quantity check, model check, and adding paper. As a result, a large number of workers are employed in the PCB board packaging workshop. There are many people in the two processes of counting and checking models alone, and there are also special people to add paper. The efficiency is very low and it is easy to make mistakes. It will also cause secondary pollution and damage to the PCB boards. The ordinary stacking counting machine does not have the paper separation function and is not efficient.

[0004] A Chinese invention patent with publication number CN109625491A has been retrieved, which discloses a PCB board stacking counting and paper separation device, including a PCB board loading mechanism, a PCB board conveyor line, a vision system, a robot system, and a paper loading mechanism; the PCB board loading mechanism conveys the PCB board to the PCB board conveyor line, and the vision system accurately identifies and locates the PCB board on the PCB board conveyor line, and transmits the position information of the PCB board to the robot system; the robot system grabs the PCB board on the PCB board conveyor line and accurately places it on the stacking position set by the program according to the position information of the PCB board transmitted by the vision system; then the paper separation mechanism divides the corresponding stack of paper into pages, and the paper is sucked by the paper loading mechanism and the suction cup and quickly transported to the top of the stacking position through the linear module, and then the vacuum is broken to make the suction disappear, and the paper falls on the PCB board, realizing the function of automatic paper separation.

[0005] However, this PCB board stacking counting and paper separation equipment requires that the paper be cut in advance and stacked at the paper stacking position, and then the paper separation mechanism performs paging, and then the paper loading mechanism stacks the paper onto the PCB board. This method of automatically adding paper separation has the following problems:

[0006] 1. It is necessary to manually stack the cut paper on the paper stacking position, and it is impossible to achieve full automation of paper cutting, paper separation and paper loading;

[0007] 2. When the paper feeding mechanism sucks up paper through the suction cup, it is easy to suck up multiple sheets of paper at one time, which not only wastes paper, but also affects the subsequent weighing and other packaging procedures;

[0008] 3. The paper separation mechanism can only absorb one piece of separator paper at a time, and the speed of adding separator paper is low, which will seriously slow down the production efficiency of the entire PCB board packaging line. Even if a double-station design is adopted, it is difficult to significantly increase the paper stacking rate, and it will also lead to an increase in the size of the equipment.

[0009] Therefore, it is necessary to design an automatic paper feeding mechanism and a PCB board automatic stacking and paper separation device that can realize automatic paper cutting and paper feeding and has a fast production rate. Summary of the invention

[0010] Therefore, the technical problem to be solved by the present invention is to overcome the technical problems of low automation and low production efficiency of PCB paper stacking equipment in the prior art, thereby providing an automatic paper loading mechanism and automatic PCB board stacking and paper separation equipment.

[0011] In order to solve the above technical problems, the technical solution of the present invention is as follows:

[0012] An automatic paper feeding mechanism comprises a conveying platform, a paper feeding device, a paper cutting device, a paper cutting device, a paper suction platform and a paper feeding device arranged on a frame, wherein the conveying platform is located between the paper feeding device and the paper feeding device, and the paper cutting device and the paper cutting device are arranged above the conveying platform;

[0013] The conveying platform is provided with a pair of paper feeding rollers for clamping the paper and providing running power for the paper;

[0014] The paper supply device comprises a paper feeding drum for supplying the paper to be cut to the paper feeding end of the conveying platform;

[0015] The paper cutting device comprises a plurality of cutting components for cutting the paper being conveyed on the conveying platform into a plurality of strips of paper along the conveying direction;

[0016] The paper cutting device comprises a cutter assembly for cutting a plurality of strips of paper being conveyed into a plurality of independent paper sheets in a direction perpendicular to the paper conveying direction;

[0017] The paper suction platform is arranged at the paper discharge end of the conveying platform and is used to receive multiple paper sheets conveyed by the conveying platform;

[0018] The paper loading device includes a plurality of suction cup assemblies installed on the frame for respectively sucking up multiple paper sheets arranged side by side on the paper suction platform, a paper separating assembly driving the plurality of suction cup assemblies to separate from each other along the side-by-side direction of the multiple paper sheets to increase the distance between two adjacent paper sheets, and a driving module driving the plurality of suction cup assemblies and the paper separating assembly to reciprocate between the paper suction station of the paper suction platform and the stacking position of multiple PCB boards.

[0019] Further, the paper loading device comprises: a mounting plate driven by the driving module to reciprocate between the paper suction station of the paper suction platform and the stacking position of multiple PCB boards; and a vertical driving cylinder installed on the mounting plate for driving the suction cup assembly and the paper separation assembly to reciprocate vertically;

[0020] The paper separation assembly includes: a mounting frame connected to the telescopic end of the vertical driving cylinder and driven by the vertical driving cylinder to perform vertical lifting movement below the mounting plate, a guide rail installed below the mounting frame and extending along the side-by-side direction of multiple sheets of paper, multiple driving motors vertically installed on the mounting frame, multiple synchronous belts driven to perform reciprocating movement by the multiple driving motors, multiple horizontal sliding frames respectively connected to the multiple synchronous belts and slidably installed on the guide rails, and the multiple horizontal sliding frames are arranged along the side-by-side direction of multiple sheets of paper; each of the horizontal sliding frames is connected to multiple suction cup mounting frames for installing the suction cup assembly.

[0021] Furthermore, the plurality of suction cup mounting frames are all slidably mounted on the horizontal sliding frame along the length direction of the horizontal sliding frame, and are arranged alternately and spaced apart on opposite sides of the horizontal sliding frame.

[0022] Furthermore, the suction cup mounting frame is provided with a slide groove extending along the side-by-side direction of the plurality of paper sheets, and the suction cup assembly is slidably mounted on the slide groove.

[0023] Furthermore, the paper cutting device also includes a first fixed frame of the frame installed above the conveying platform, and the first fixed frame is provided with a plurality of guide rods horizontally arranged along a direction perpendicular to the paper conveying direction; the slitting assembly includes a knife seat slidably installed on the plurality of guide rods along the axial direction of the guide rod, and a first cutter installed on the knife seat and with the blade facing the conveying platform.

[0024] Furthermore, the paper cutting device also includes a second fixed frame installed above the conveying platform, and a cutter driving structure that drives the cutter assembly to move vertically so that the cutter assembly cooperates with the conveying platform to cut the paper; the cutter assembly is a second cutter that is longitudinally slidably installed on the second fixed frame and the blade is horizontally arranged.

[0025] Furthermore, the paper suction platform includes a carrying plate for carrying paper sheets and having suction holes densely arranged on the upper surface, and a suction base connected to the bottom of the carrying plate and having a suction channel communicating with the suction holes inside, and the suction channel is connected to an exhaust system for extracting the gas in the suction channel to the outside.

[0026] Furthermore, a shifting device is installed on the frame to drive the paper suction platform to perform reciprocating motion between the paper loading station and the paper suction station of the paper suction platform along the conveying direction of the paper.

[0027] Furthermore, the frame is provided with two paper collecting slots located on opposite sides of the paper suction station of the paper suction platform. The frame is also slidably provided with a cleaning device located above the paper suction platform and reciprocating between the two paper collecting slots to clean paper scraps above the paper suction platform.

[0028] On the other hand, an embodiment of the present invention provides an automatic PCB board stacking and paper separation device, comprising a PCB board conveyor line arranged on a frame, a loading device for synchronously conveying multiple PCB boards arranged side by side on the PCB board conveyor line to multiple stacking positions, and the automatic paper loading mechanism as described above, wherein the loading device of the automatic paper loading mechanism is used to separate multiple cut paper sheets arranged side by side and convey them to just above the paper stacking position.

[0029] 1. The automatic paper feeding mechanism provided by the present invention has the paper provided by the paper feeding roller moving along the paper feeding direction on the conveying platform under the driving force of a pair of paper feeding rollers, and the paper being conveyed is cut into a plurality of paper pieces arranged side by side after being successively striped by a paper cutting device and cut by a paper cutting device on the conveying platform, and then the plurality of paper pieces continue to move and are received by the paper suction platform, and the plurality of groups of suction cup assemblies on the paper feeding device respectively absorb the corresponding plurality of paper pieces, and are separated from each other along the side-by-side direction of the plurality of paper pieces under the action of the paper separation assembly, and finally the suction cup assembly and the paper separation assembly move from the paper suction station of the paper suction platform to the stacking position of the plurality of PCB boards under the action of the driving module. The automatic paper feeding mechanism can not only realize the full automation of paper cutting, paper separation and paper feeding process, but also the suction cup assembly can only suck one paper piece at a time, thus avoiding sucking multiple paper pieces at one time, causing paper waste and affecting subsequent weighing and other procedural problems; in addition, the automatic paper feeding mechanism can load and stack two or more groups of PCB boards at the same time without significantly increasing the volume of the equipment, thus greatly improving the efficiency of adding paper spacers to PCB boards.

[0030] 2. The automatic paper feeding mechanism provided by the present invention has a vertical driving cylinder driving the paper separation assembly and the suction cup assembly installed on the paper separation assembly to perform vertical reciprocating motion, a driving module driving the mounting plate of the paper feeding device to perform reciprocating motion between the paper suction station of the paper suction platform and the stacking position of multiple PCB boards, and multiple driving motors respectively and exclusively drive the corresponding horizontal sliding frames to perform horizontal lateral motion on the guide rails through synchronous belt transmission, so that the spacing between the multiple horizontal sliding frames can be adjusted, thereby realizing the adjustment of the spacing between the multiple suction cup assemblies arranged side by side; through the coordinated action of the driving module, the vertical driving cylinder, and the multiple driving motors, multiple sheets of paper sucked by the multiple groups of suction cup assemblies can be simultaneously transported to the corresponding stacking positions of the multiple PCB boards; it should be noted here that since the stacking positions of the multiple PCB boards need to be separated by corresponding partition positioning mechanisms, and the partitions The positioning mechanism itself needs to occupy a certain space. After the paper pieces obtained by direct cutting are sucked by the suction cup assembly, if the spacing between the multiple side-by-side suction cup assemblies is not expanded through the paper separating assembly, the paper pieces on the suction cup assembly cannot be placed one by one on the stacking positions of each PCB board; if multiple paper pieces arranged in the same line as the stacking positions of the multiple PCB boards are cut according to the stacking positions of the multiple PCB boards, a large amount of waste paper will inevitably be cut between the multiple paper pieces obtained by cutting, resulting in paper waste, and when the size of the stacking position of the PCB board is certain, this method has larger size requirements for the paper feeding roller, the paper cutting device, and the paper cutting device. Therefore, this paper feeding device provided with a paper separating assembly greatly improves the efficiency of adding paper spacing to the PCB board and reduces the generation of waste paper without increasing the size of the paper feeding roller, the paper cutting device, the paper cutting device, etc.

[0031] 3. In the automatic paper loading mechanism provided by the present invention, multiple suction cup mounting frames and corresponding suction cup assemblies are staggeredly arranged on both sides of the horizontal sliding frame, so that the distribution range of the multiple suction cup assemblies can be larger. When multiple suction cup assemblies are used to absorb a piece of paper at the same time, the stability of the paper during the operation of the suction cup assembly can be improved.

[0032] 4. The automatic paper loading mechanism provided by the present invention has a suction cup assembly that is slidably mounted on a slide groove on a suction cup mounting frame, and the spacing between multiple suction cup assemblies that simultaneously absorb a piece of paper can be adjusted to meet the needs of grabbing paper sheets of different sizes, which is more practical.

[0033] 5. The automatic paper feeding mechanism provided by the present invention has a knife holder of the slitting assembly slidably mounted on a guide rod on the first fixed frame, which can adjust the distance between two adjacent knife holders and the first cutter, thereby cutting paper pieces of different sizes to meet the paper stacking requirements of PCB boards of different sizes.

[0034] 6. The automatic paper feeding mechanism provided by the present invention can ensure that the paper is stably adsorbed on the paper adsorbing platform by forming negative pressure through the exhaust system of the paper adsorbing platform, and avoid the phenomenon of paper fluttering due to being too light.

[0035] 7. The automatic paper loading mechanism provided by the present invention has a shifting device which can drive the paper suction platform to make reciprocating motion between the paper loading station and the paper suction station of the paper suction platform along the paper conveying direction. The shifting device is arranged between the conveying platform and the paper loading device, which can realize the full automation of paper cutting, paper separation and paper loading processes, thereby improving the efficiency of adding paper spacers to the PCB board.

[0036] 8. The automatic paper feeding mechanism provided by the present invention and the cleaning device on the paper suction platform can effectively sweep away the waste paper on the paper suction platform in time to avoid the influence of the waste paper on the added spacer paper.

[0037] 9. The automatic PCB board stacking and paper separation equipment provided by the present invention can place the PCB boards and paper separation sheets in sequence at the stacking positions of the PCB boards through the cooperation of the PCB board conveyor line, the loading device, and the paper loading device, and realize the simultaneous addition of paper separations to multiple groups of PCB boards, thereby greatly improving the efficiency of adding paper separations to the PCB boards. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0039] Figure 1 A top view of a PCB automatic stacking and paper separation device in an embodiment of the present invention;

[0040] Figure 2 This is a schematic diagram of the overall structure of the paper cutting part of the automatic PCB stacking and paper separation device in an embodiment of the present invention;

[0041] Figure 3 It is a schematic diagram of the installation structure of the conveying platform, paper feeding device, paper cutting device, paper cutting device and paper suction platform of the paper cutting part on the frame in an embodiment of the present invention;

[0042] Figure 4 This is an exploded schematic diagram of a paper suction platform in an embodiment of the present invention;

[0043] Figure 5 This is a schematic diagram of the overall structure of the stacking part of the automatic PCB stacking and paper separation device in an embodiment of the present invention;

[0044] Figure 6Schematic diagram of the stacking position of PCB boards in the stacking part and the installation structure of the partition positioning mechanism on the rack in an embodiment of the present invention;

[0045] Figure 7 This is a schematic structural diagram of the first side of the paper loading device in an embodiment of the present invention;

[0046] Figure 8 It is a schematic structural diagram of the second side of the paper loading device in an embodiment of the present invention.

[0047] Description of reference numerals: 100, frame; 200, paper cutting part; 210, conveying platform; 211, paper feeding roller; 220, paper feeding device; 221, paper feeding drum; 222, tensioning roller; 223, height adjustment assembly; 230, paper cutting device; 231, first fixed frame; 232, guide rod; 233, knife seat; 234, first cutter; 240, paper cutting device; 241, second fixed frame; 242, cutter assembly; 250, paper suction platform; 251, carrying plate; 252, air suction base; 253, air suction channel; 260, shifting device; 270, collecting Paper trough; 280, cleaning device; 300, stacking part; 310, paper loading device; 311, suction cup assembly; 312, paper separation assembly; 3121, mounting frame; 3122, guide rail; 3123, driving motor; 3124, synchronous belt; 3125, horizontal sliding frame; 3126, suction cup mounting frame; 3127, slide; 313, driving module; 314, mounting plate; 315, vertical driving cylinder; 320, PCB board conveyor line; 330, board loading device; 340, PCB board stacking position; 350, partition positioning mechanism; 360, discharge conveyor belt. DETAILED DESCRIPTION

[0048] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0050] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0052] like Figure 1 The PCB board automatic stacking and paper separation device shown in the figure comprises a frame 100 and a stacking part 300 and a paper cutting part 200 sequentially mounted on the frame 100. The paper cutting part 200 comprises a conveying platform 210, a paper supply device 220, a paper cutting device 230, a paper cutting device 240 and a paper suction platform 250 mounted on the frame 100, the conveying platform 210 is located between the paper supply device 220 and the paper loading device 310, and the paper cutting device 230 and the paper cutting device 240 are arranged above the conveying platform 210. The stacking part 300 includes a PCB board conveying line 320 arranged on the frame 100, a board loading device 330 for synchronously conveying a plurality of PCB boards arranged side by side on the PCB board conveying line 320 to a stacking position of a plurality of PCB boards; and a paper loading device 310 for separating a plurality of paper sheets arranged side by side and conveying them to the position just above the stacking position of the PCB boards, one end of the paper loading device 310 extends above the paper cutting part 200, and reciprocates between the paper suction platform 250 and the stacking position of a plurality of PCB boards. The stacking part 300 also includes a discharge conveyor belt 360 arranged on the frame 100 for outputting the stacked PCB boards.

[0053] Through the cooperation of the PCB board conveyor line 320, the loading device 330, the paper cutting device 230, the paper cutting device 240 and the loading device 310, the PCB board and the cut paper separation sheets can be placed in sequence on the stacking position of the PCB board, and transported outward through the discharge conveyor belt 360, so that multiple groups of PCB boards can be added with paper separation sheets simultaneously, which greatly improves the efficiency of adding paper separation sheets to the PCB boards.

[0054] like Figure 2 and Figure 3As shown, in this embodiment, the paper supply device 220 includes a paper feeding drum 221 for providing the paper to be cut to the paper feeding end of the conveying platform 210, and a tensioning roller 222 arranged on the paper feeding path for keeping the paper in a tensioned state and entering the conveying platform 210. Both sides of the tensioning roller 222 are provided with a height adjustment component 223 for adjusting the height of the tensioning roller 222 relative to the paper. The height adjustment component 223 specifically uses a screw slider structure to adjust the height of the tensioning roller 222 to ensure that the paper is in a flat tensioned state. The height adjustment component 223 is common knowledge known to those skilled in the art and will not be described here.

[0055] like Figure 2 and Figure 3 As shown, in this embodiment, a pair of paper feed rollers 211 are provided on the conveying platform 210 for clamping the paper and providing running power for the paper; one of the paper feed rollers 211 is an active paper feed roller 211, and the other is a driven paper feed roller 211. The paper is clamped in the gap between the active paper feed roller 211 and the driven paper feed roller 211. The active paper feed roller 211 is driven to rotate by a servo motor and drives the clamped paper to move along the conveying direction.

[0056] like Figure 2 and Figure 3 As shown, in this embodiment, the paper cutting device 230 includes a plurality of slitting components for slitting the paper being conveyed on the conveying platform 210 into a plurality of strips of paper along the conveying direction thereof, and a first fixed frame 231 of the frame 100 installed above the conveying platform 210. The first fixed frame 231 is provided with a plurality of guide rods 232 horizontally arranged along a direction perpendicular to the paper conveying direction; the slitting components include a plurality of knife seats 233 slidably installed on the plurality of guide rods 232 along the axial direction of the guide rods 232, and a first cutter 234 installed on the knife seat 233 with the blade facing the conveying platform 210. The knife seat 233 of the slitting component is slidably installed on the guide rod 232 on the first fixed frame 231, so that the distance between two adjacent knife seats 233 and the first cutter 234 can be adjusted, and then paper pieces of different sizes can be cut to meet the paper stacking requirements of PCB boards of different sizes.

[0057] like Figure 2 and Figure 3 As shown, in a specific implementation of this embodiment, there are five slitting assemblies, which are used to slit a whole piece of paper into six strips of paper, of which the four strips of paper in the middle are the paper required for stacking, and the two strips of paper at the edge are waste paper generated by cutting. Specifically, the first cutter 234 is a roller or blade fixedly mounted on the knife seat 233, and the first cutter 234 is detachably mounted on the knife seat 233 so as to replace the first cutter 234 that is worn out. Preferably, a protective cover for covering the multiple slitting assemblies is also provided on the first fixed frame 231.

[0058] like Figure 2 and Figure 3 As shown, in this embodiment, the paper cutting device 240 includes: a second fixed frame 241 installed above the conveying platform 210; a plurality of cutter assemblies 242 vertically slidably installed on the second fixed frame 241 for cutting the paper being conveyed on the conveying platform 210 into a plurality of strips of paper along its conveying direction; and a cutter driving structure for driving the cutter assembly 242 to move vertically so that the cutter assembly 242 cooperates with the conveying platform 210 to cut the paper; the cutter assembly 242 is a second cutter longitudinally slidably installed on the second fixed frame 241 and the blade is horizontally arranged. The cutter driving structure can drive the second cutter to slide up and down along the opposite side walls of the second fixed frame 241 by a servo motor + cam transmission, or directly drive the second cutter to reciprocate vertically by one or more cylinders installed above the second fixed frame 241 to achieve the function of cutting the paper. The second cutter can cut a plurality of strips of paper into a plurality of paper pieces arranged side by side and independent of each other.

[0059] Combination Figure 4 As shown, in this embodiment, the paper suction platform 250 is arranged on the frame 100 at the paper outlet end of the conveying platform 210, and is used to receive multiple paper pieces arranged side by side conveyed by the conveying platform 210. Specifically, the paper suction platform 250 includes a carrier plate 251 for carrying paper pieces and having suction holes densely arranged on the upper surface, and a suction base 252 connected to the bottom of the carrier plate 251 and having a suction channel 253 communicating with the suction holes inside, and the suction channel 253 is connected to an exhaust system for extracting the gas in the suction channel 253 outward. The paper suction platform 250 can ensure that the paper is stably adsorbed on the paper suction platform 250 by vacuuming the exhaust system to form a negative pressure to adsorb the paper thereon, thereby avoiding the phenomenon that the paper flutters due to being too light.

[0060] like Figure 2 and Figure 3As shown, in this embodiment, a shifting device 260 is also installed on the frame 100 to drive the paper suction platform 250 to reciprocate between the paper loading station and the paper suction station of the paper suction platform 250 along the conveying direction of the paper. The shifting device 260 can drive the paper suction platform 250 to reciprocate between the paper loading station and the paper suction station of the paper suction platform 250 along the conveying direction of the paper. The shifting device 260 is arranged between the conveying platform 210 and the paper loading device 310, which can realize the full automation of the paper cutting, paper separation, and paper loading process, and improve the efficiency of adding paper separation to the PCB board. Specifically, the shifting device 260 includes two truss beams fixed on the frame 100, a bottom plate installed on the truss beam and a servo motor fixed on the bottom plate, a screw driven by the servo motor, and a slider structure threadedly connected to the screw and fixedly connected to the air suction platform. The shifting device 260 drives the air suction platform to reciprocate through the screw transmission, which has the advantages of high control accuracy and fast response speed. The shifting device 260 here is a design structure that can be thought of by those skilled in the art based on the text description, and is not shown in detail here through the drawings.

[0061] like Figure 2 and Figure 3 As shown, in this embodiment, two paper collecting slots 270 located on opposite sides of the paper sucking station of the paper sucking platform 250 are installed on the frame 100, and a cleaning device 280 located above the paper sucking platform 250 and reciprocating between the two paper collecting slots 270 to clean the paper scraps above the paper sucking platform 250 is also slidably installed on the frame 100. The setting of the cleaning device 280 can effectively sweep away the waste paper on the paper sucking platform 250 in time, avoiding the influence of waste paper on the added separation paper, and the paper collecting slot 270 can collect waste paper, which is convenient for the collection and processing of waste paper. Specifically, the cleaning device 280 includes a servo motor installed on a truss beam, a screw driven by the servo motor to rotate in the truss beam, a slider structure threadedly connected to the screw and slidably connected to the truss beam, a connecting plate connected to the slider structure and extending above the paper sucking platform 250, and a brush part installed on the connecting plate and extending toward the direction of the paper sucking platform 250 for sweeping away the waste paper above the paper sucking platform 250.

[0062] like Figure 1 and Figure 5As shown in Figure 8, in this embodiment, the paper loading device 310 includes a plurality of suction cup assemblies 311 installed on the frame 100 for respectively sucking a plurality of paper sheets arranged side by side on the paper suction platform 250, a paper separation assembly 312 for driving the plurality of suction cup assemblies 311 to separate from each other along the side-by-side direction of the plurality of paper sheets to increase the distance between two adjacent paper sheets, a driving module 313 for driving the plurality of suction cup assemblies 311 and the paper separation assembly 312 to reciprocate between the paper suction station of the paper suction platform 250 and the stacking position of a plurality of PCB boards; a mounting plate 314 driven by the driving module 313 to reciprocate between the paper suction station of the paper suction platform 250 and the stacking position of a plurality of PCB boards; and a vertical driving cylinder 315 installed on the mounting plate 314 for driving the suction cup assemblies 311 and the paper separation assembly 312 to reciprocate vertically.

[0063] The paper provided by the paper feeding roller 211 moves along the paper feeding direction on the conveying platform 210 under the driving force of a pair of paper feeding rollers 211. The paper being conveyed is cut into a plurality of paper pieces arranged side by side after being striped by the paper cutting device 230 and cut by the paper cutting device 240 on the conveying platform 210. Then the plurality of paper pieces continue to move and are received by the paper suction platform 250. The plurality of groups of suction cup assemblies 311 on the paper loading device 310 absorb the corresponding plurality of paper pieces respectively, and are separated from each other along the side-by-side direction of the plurality of paper pieces under the action of the paper separation assembly 312. Finally, the suction cup assembly 311 and the paper separation assembly 312 move from the paper suction station of the paper suction platform 250 to the paper suction station 310 under the action of the driving module 313. The stacking positions of multiple PCB boards are arranged, and the paper pieces on the suction cup assembly 311 correspond to the stacking positions of one PCB board respectively, and then the suction cup assembly 311 breaks the vacuum, the suction force on the paper piece disappears, and the paper piece falls on the PCB board at the stacking position; this automatic paper loading mechanism not only realizes the full automation of paper cutting, paper separation, and paper loading processes, but also the suction cup assembly 311 can only suck one paper piece at a time, avoiding sucking multiple paper pieces at one time, causing paper waste and affecting subsequent weighing and other procedural problems; in addition, this automatic paper loading mechanism can load and stack two or more groups of PCB boards at the same time without significantly increasing the volume of the equipment, greatly improving the efficiency of adding paper spacing to the PCB boards.

[0064] like Figure 8As shown, specifically, the paper separation assembly 312 includes: a mounting frame 3121 connected to the telescopic end of the vertical driving cylinder 315 and driven by the vertical driving cylinder 315 to perform vertical lifting movement below the mounting plate 314, a guide rail 3122 installed below the mounting frame 3121 and extending along the side-by-side direction of multiple paper sheets, a plurality of driving motors 3123 vertically installed on the mounting frame 3121, a plurality of synchronous belts 3124 driven to perform reciprocating motion by the plurality of driving motors 3123, a plurality of horizontal sliding frames 3125 respectively connected to the plurality of synchronous belts 3124 and slidably installed on the guide rail 3122, the plurality of horizontal sliding frames 3125 being arranged along the side-by-side direction of multiple paper sheets; each horizontal sliding frame 3125 is connected with a plurality of suction cup mounting frames 3126 for installing the suction cup assembly 311.

[0065] The vertical driving cylinder 315 drives the paper separation assembly 312 and the suction cup assembly 311 installed on the paper separation assembly 312 to perform vertical reciprocating motion, the driving module 313 drives the mounting plate 314 of the paper loading device 310 to perform reciprocating motion between the paper suction station of the paper suction platform 250 and the stacking position of multiple PCB boards, and the multiple driving motors 3123 respectively drive the corresponding horizontal sliding frames 3125 to perform horizontal lateral motion on the guide rail 3122 through the transmission of the synchronous belt 3124, so that the spacing between the multiple horizontal sliding frames 3125 can be adjusted, thereby realizing the adjustment of the spacing between the multiple suction cup assemblies 311 arranged side by side; through the coordinated action of the driving module 313, the vertical driving cylinder 315, and the multiple driving motors 3123, the multiple sheets of paper sucked by the multiple groups of suction cup assemblies 311 can be simultaneously transported to the corresponding stacking positions of the multiple PCB boards; it should be noted here that since the stacking positions of the multiple PCB boards need to be separated by corresponding partition positioning mechanisms 350 , and the partition positioning mechanism 350 itself needs to occupy a certain space. After the paper pieces cut directly are sucked by the suction cup assembly 311, if the spacing between the multiple suction cup assemblies 311 arranged side by side is not enlarged by the paper separating assembly 312, the paper pieces on the suction cup assembly 311 cannot be placed one by one on the stacking positions of each PCB board; if multiple paper pieces arranged in the same line as the stacking positions of the multiple PCB boards are cut according to the stacking positions of the multiple PCB boards, a large amount of waste paper will inevitably be generated between the multiple paper pieces cut, resulting in paper waste. Moreover, when the size of the stacking position of the PCB board is certain, this method requires larger sizes of the paper feeding roller 211, the paper cutting device 230, and the paper cutting device 240. Therefore, the paper loading device 310 provided with the paper separating assembly 312 greatly improves the efficiency of adding paper partitions to the PCB board and reduces the generation of waste paper without increasing the sizes of the paper feeding roller 211, the paper cutting device 230, the paper cutting device 240, etc.

[0066] like Figure 7 and Figure 8As shown, in a specific implementation of the present embodiment, there are four stacking positions of the PCB board on the frame 100 and they are arranged side by side, the corresponding paper sheets need to be cut into four sheets arranged side by side, the corresponding suction cup assemblies 311 and the horizontal sliding frames 3125 are each provided with four groups, there are two drive motors 3123 installed on the mounting frame 3121, and they are respectively located at two diagonal positions of the mounting frame 3121, there are also two corresponding synchronous belts 3124, and there are two guide rails 3122 which are arranged opposite to each other. The four horizontal sliding frames 3125 are respectively slidably installed on the two tamping drums through the slider structure. The two horizontal sliding frames 3125 located in the middle of the four horizontal sliding frames 3125 are respectively connected to the two sides of the same synchronous belt 3124. The driving motor 3123 drives the synchronous belt 3124 to rotate and drives the two horizontal sliding frames 3125 in the middle to move closer to or away from each other to adjust the distance between them. One of the two horizontal sliding frames 3125 located on both sides is not connected to any synchronous belt 3124, and the other is connected to another synchronous belt 3124, and slides horizontally along the guide rail 3122 driven by the synchronous belt 3124. The paper separation assembly 312 of this structural arrangement can adjust the distance between any two adjacent horizontal sliding frames 3125, that is, it can adjust the distance between the four groups of suction cup assemblies 311 arranged side by side and the four pieces of paper adsorbed thereon to meet the paper stacking packaging requirements of PCB boards of different sizes.

[0067] like Figure 7 and Figure 8 As shown, in this embodiment, a plurality of suction cup mounting frames 3126 are slidably mounted on the horizontal sliding frame 3125 along the length direction of the horizontal sliding frame 3125, and are arranged alternately at intervals on opposite sides of the horizontal sliding frame 3125. In a specific implementation of this embodiment, three suction cup assemblies 311 are used to absorb a piece of paper, wherein two suction cup assemblies 311 are located on one side of the horizontal sliding frame 3125, and another suction cup assembly 311 is located on one side of the horizontal sliding frame 3125, and the three suction cup assemblies 311 in the same group are arranged in a triangle. Three suction cup mounting frames 3126 and a corresponding number of suction cup assemblies 311 are arranged alternately on both sides of the horizontal sliding frame 3125, and the installation position of the suction cup mounting frames 3126 on the horizontal sliding frame 3125 is adjustable, so that the distribution range of the three suction cup assemblies 311 can be expanded. When the three suction cup assemblies 311 are used to absorb a piece of paper at the same time, not only can the stability of the paper with the suction cup assembly 311 be improved, but also the installation position of the suction cup mounting frames 3126 can be adjusted to meet the absorption requirements of paper pieces of different sizes. In other specific embodiments, the number of suction cup assemblies 311 that absorb the same piece of paper can also be set to four or more.

[0068] like Figure 7 and Figure 8As shown, in this embodiment, the suction cup mounting frame 3126 is provided with a slide groove 3127 extending along the parallel direction of the multiple paper sheets, and the suction cup assembly 311 is slidably mounted on the slide groove 3127. The suction cup assembly 311 is slidably mounted on the slide groove 3127 on the suction cup mounting frame 3126, so that the spacing between the multiple suction cup assemblies 311 that simultaneously absorb a paper sheet can be adjusted to meet the needs of grabbing paper sheets of different sizes, and the practicality is stronger.

[0069] In summary, the automated paper loading mechanism and PCB board automatic stacking and paper separation equipment provided by the embodiments of the present invention realize full automation of multi-path paper cutting, paper separation, and paper loading processes by arranging a paper separation component 312 on the paper loading device 310 that can separate multiple sheets of paper, and cooperate with the coordinated operation of the PCB board conveyor line 320 and the board loading device 330 to realize the simultaneous addition of paper separations to multiple groups of PCB boards, greatly improving the efficiency of adding paper separations to PCB boards; and because the suction cup component 311 can only suck up one sheet of paper at a time, it avoids sucking up multiple sheets of paper at one time, causing waste of paper and affecting subsequent weighing and other procedural problems.

[0070] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. An automatic paper feeding mechanism, characterized in that: The machine comprises a conveying platform (210), a paper supply device (220), a paper cutting device (230), a paper cutting device (240), a paper suction platform (250) and a paper loading device (310) arranged on a frame (100), wherein the conveying platform (210) is located between the paper supply device (220) and the paper loading device (310), and the paper cutting device (230) and the paper cutting device (240) are arranged above the conveying platform (210); The conveying platform (210) is provided with a pair of paper conveying rollers (211) for clamping the paper and providing running power for the paper; The paper supply device (220) comprises a paper supply drum (221) for supplying the paper to be cut to the paper feed end of the conveying platform (210); The paper cutting device (230) comprises a plurality of cutting components for cutting the paper being conveyed on the conveying platform (210) into a plurality of strips of paper along the conveying direction; The paper cutting device (240) comprises a cutter assembly (242) for cutting a plurality of strips of paper being conveyed into a plurality of independent paper sheets in a direction perpendicular to the paper conveying direction; The paper suction platform (250) is arranged at the paper outlet end of the conveying platform (210) and is used to receive a plurality of paper sheets conveyed by the conveying platform (210); The paper loading device (310) comprises a plurality of groups of suction cup assemblies (311) mounted on the frame (100) and used to respectively suck up a plurality of paper sheets arranged side by side on the paper suction platform (250), a paper separation assembly (312) for driving the plurality of groups of suction cup assemblies (311) to separate from each other along the side-by-side direction of the plurality of paper sheets so as to increase the distance between two adjacent paper sheets, and a driving module (313) for driving the plurality of groups of suction cup assemblies (311) and the paper separation assembly (312) to reciprocate between the paper suction station of the paper suction platform (250) and the stacking position of a plurality of PCB boards; The paper loading device (310) comprises: a mounting plate (314) driven by the driving module (313) to reciprocate between the paper suction station of the paper suction platform (250) and the stacking position of the plurality of PCB boards; and a vertical driving cylinder (315) mounted on the mounting plate (314) and used for driving the suction cup assembly (311) and the paper separation assembly (312) to reciprocate vertically; The paper separation assembly (312) comprises: a mounting frame (3121) connected to the telescopic end of the vertical driving cylinder (315) and driven by the vertical driving cylinder (315) to perform vertical lifting movement below the mounting plate (314); a guide rail (3122) installed below the mounting frame (3121) and extending along the parallel direction of the plurality of paper sheets; a plurality of driving motors (3123) vertically installed on the mounting frame (3121); The motor (3123) drives a plurality of synchronous belts (3124) to perform reciprocating motion, and is respectively connected to the plurality of synchronous belts (3124) in a transmission manner and slidably mounted on a plurality of horizontal sliding frames (3125) of the guide rail (3122), wherein the plurality of horizontal sliding frames (3125) are arranged along the parallel direction of the plurality of paper sheets; each of the horizontal sliding frames (3125) is connected to a plurality of suction cup mounting frames (3126) for mounting the suction cup assembly (311); The plurality of suction cup mounting frames (3126) are all slidably mounted on the horizontal sliding frame (3125) along the length direction of the horizontal sliding frame (3125), and are arranged alternately and spaced apart on opposite sides of the horizontal sliding frame (3125); The suction cup mounting frame (3126) is provided with a slide groove (3127) extending along the parallel direction of the plurality of paper sheets, and the suction cup assembly (311) is slidably mounted on the slide groove (3127); The paper cutting device (230) further comprises a first fixed frame (231) of the frame (100) mounted above the conveying platform (210), wherein the first fixed frame (231) is provided with a plurality of guide rods (232) horizontally arranged along a direction perpendicular to the paper conveying direction; the slitting assembly comprises a knife seat (233) slidably mounted on the plurality of guide rods (232) along the axial direction of the guide rods (232), and a first cutter (234) mounted on the knife seat (233) and arranged with the blade facing the conveying platform (210); The paper cutting device (240) further comprises a second fixed frame (241) mounted above the conveying platform (210), and a cutter driving structure for driving the cutter assembly (242) to move vertically so that the cutter assembly (242) cooperates with the conveying platform (210) to cut the paper; the cutter assembly (242) is a second cutter mounted on the second fixed frame (241) in a longitudinal sliding manner and with a blade arranged horizontally; The paper suction platform (250) comprises a carrying plate (251) for carrying paper sheets and having air suction holes densely arranged on its upper surface, and an air suction base (252) connected to the lower side of the carrying plate (251) and having an air suction channel (253) communicating with the air suction holes arranged therein, wherein the air suction channel (253) is connected to an air suction system for extracting gas in the air suction channel (253) to the outside; The frame (100) is provided with a shifting device (260) for driving the paper suction platform (250) to perform reciprocating motion between a paper loading station and a paper suction station of the paper suction platform (250) along the conveying direction of the paper.

2. The automatic paper feeding mechanism according to claim 1, characterized in that: The frame (100) is provided with two paper collecting grooves (270) located on opposite sides of the paper suction station of the paper suction platform (250). The frame (100) is also provided with a cleaning device (280) located above the paper suction platform (250) and reciprocating between the two paper collecting grooves (270) to clean paper scraps above the paper suction platform (250) in a slidable manner.

3. A PCB board automatic stacking and paper separation device, characterized in that: It comprises a PCB board conveyor line (320) arranged on a frame (100), a loading device (330) for synchronously conveying a plurality of PCB boards arranged side by side on the PCB board conveyor line (320) to a plurality of stacking positions, and an automatic paper loading mechanism as claimed in any one of claims 1 to 2, wherein the loading device (310) of the automatic paper loading mechanism is used to separate a plurality of cut paper sheets arranged side by side and convey them to a position just above the stacking position.

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