A PCB board feeding device based on irregular shape

Abstract

The invention relates to the technical field of PCB sheet material conveying technology, and specifically discloses a PCB sheet material feeding device based on an irregular shape, comprising a base, a conveying platform is arranged on one side of the base, a slide is arranged above the base, and a feeding mechanism matched with the sheet material is arranged on the slide; the invention provides a connecting disk, and can flexibly adjust the positions of the suction cups of multiple piston cylinders on the connecting disk according to the design of the end surface of the irregular sheet material, so that the multiple suction cups can flexibly correspond to the suction-holding parts on the sheet material, thereby facilitating the suction operation of the sheet material, and the position adjustment operation of the piston cylinder on the connecting disk is simple and clear; the invention provides multiple groups of suction components, so that the multiple suction cups can be well sucked on the sheet material according to the pressure values ​​fed back by the pressure sensor, thereby avoiding the situation that some suction cups fail to suck the sheet material, and also avoiding the situation that some suction cups cause over-pressure damage to the sheet material, thereby ensuring the feeding stability of the sheet material and reducing the feeding damage of the sheet material.

Description

Technical Field

[0001] The invention relates to the technical field of PCB board conveying, and in particular to a PCB board feeding device based on an irregular shape. Background Art

[0002] PCB, also known as printed circuit board, is the provider of electrical connections for electronic components. In the existing PCB manufacturing process, the empty boards of PCB are placed one by one on the conveying device through a suction cup fixture, and the empty boards of PCB are sequentially conveyed to the automatic assembly device to assemble the electronic components on the empty boards of PCB, and finally a complete PCB is obtained. However, due to the requirements of application scenarios, the empty boards of some special PCBs are designed to be irregular, and the end faces of the PCBs are uneven. The traditional automatic suction cup material picking device usually uses a suction cup with a specification corresponding to the size of the PCB board to hold and load the board. However, this suction cup cannot be applied to such irregular PCB empty boards. At present, manual loading of irregular PCB boards is still performed manually instead of suction cups, and the loading efficiency needs to be improved.

[0003] Therefore, we provide a PCB board feeding device based on irregular shape to solve the above problems. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] The problem to be solved by the present invention is to provide a PCB board feeding device based on an irregular shape to overcome the defects in the prior art.

[0006] (II) Technical solution

[0007] In order to solve the technical problem, the present invention provides a PCB board feeding device based on an irregular shape, comprising a base; a conveying platform is arranged on one side of the base, a slide is arranged above the base, a lifting platform is connected to the base through a lifting column, a plurality of sheets are stacked on the lifting platform, a first limiting column and a second limiting column matched with the sheets are arranged on both sides of the lifting platform, a sensor corresponding to the sheets is arranged on the first limiting column, the conveying platform comprises two limiting frames arranged flush with the top end of the second limiting column, and a conveyor belt is arranged between the two limiting frames; a feeding mechanism matched with the sheets is arranged on the slide;

[0008] The feeding mechanism comprises a connecting head connected to a slide seat on the slide table, the connecting head is detachably connected to a connecting disk, a plurality of arc-shaped matching holes are provided on the connecting disk, a plurality of groups of suction components are connected to the connecting disk through the arc-shaped matching holes, each group of the suction components comprises a piston cylinder, a suction cup is connected to the piston cylinder, and the plurality of groups of suction components in the feeding mechanism are connected to different positions on the connecting disk through the plurality of arc-shaped matching holes, so that the plurality of suction cups can be sucked at different positions of irregular-shaped sheets;

[0009] The suction assembly also includes an air intake joint connected to the inner cavity of the piston cylinder, the air intake joint is threadedly connected with a locking nut, the air intake joint of the piston cylinder passes through the arc-shaped matching hole and is detachably connected to the connecting disk through the locking nut, the piston cylinder is connected to an air release valve, the piston end of the piston cylinder is connected to a piston rod connected to a suction cup, a pressure sensor is arranged between the suction cup and the piston rod, a spring is sleeved on the piston rod, and the two ends of the spring are respectively connected to the piston cylinder and the suction cup, the air intake joint is connected to a first connecting pipe, and the suction cup is connected to a second connecting pipe;

[0010] According to the design of the irregular end surface of the sheet material, the positions of the multiple piston cylinders on the connecting disk are flexibly adjusted in advance, so that the multiple suction cups correspond to the suckable parts on the sheet material; when loading is required, the controller controls the slide seat on the slide table to drive the connecting disk to the material picking position above the lifting platform, and the controller controls the multiple first solenoid valves to be opened at the same time, so that the multiple first connecting pipes respectively supply air to the multiple piston cylinders through the multiple air inlet joints, so that the multiple piston rods drive the suction cups to move in the direction close to the sheet material. At the same time, the piston rod stretches the spring through the suction cup until the suction cup contacts the sheet material, and the suction cup presses the sheet material and detects the pressure data through the pressure sensor. The data detected by the pressure sensor is transmitted to the controller, and the controller The obtained pressure data is compared with the pressure threshold set in the database, and after the pressure value is detected to be within the set threshold, the first solenoid valve is closed, which means that the suction cup is in a state of good contact with the sheet. At the same time, the second solenoid valve is opened to allow the second connecting pipe to suck air through the suction cup to hold the sheet. Each group of suction components works independently through multiple first solenoid valves and second solenoid valves, so that multiple suction cups can be pressed well on the sheet according to the pressure values ​​fed back by the pressure sensor, avoiding the situation where some suction cups fail to hold the sheet, and also avoiding the situation where some suction cups cause over-pressure damage to the sheet, thereby ensuring the feeding stability of the sheet and reducing the feeding damage of the sheet.

[0011] When multiple groups of suction components have completed the suction operation of the sheet material, the controller controls the air release valve to release air, and the piston rod rises under the action of the spring. The controller drives the connecting plate to move to the top of the conveyor table through the slide. Since the limit frame of the conveyor table is flush with the second limit column, the controller controls the suction cup to stop the suction operation so that the sheet material is unloaded onto the conveyor belt. The controller then drives the connecting plate back to the material picking position and repeats the material picking operation. In this process, the material picking and unloading operations of the sheet material are only carried out by the piston rod in the piston cylinder descending to suck the sheet material through the suction cup, and the air release valve cooperates with the spring to make the sheet material follow the piston rod to rise and separate from the stacked sheet material, so that the slide directly drives the connecting plate to reciprocate. The connecting plate has no unnecessary lifting and adjustment operations, which saves the steps of loading and unloading the sheet material and improves the loading efficiency of the sheet material.

[0012] Furthermore, a matching cavity corresponding to the arc-shaped matching hole is formed between the piston cylinder and the locking nut, and the arc-shaped hole distance of the arc-shaped matching hole increases proportionally from the inside to the outside on the connecting plate.

[0013] Furthermore, the diameters of the multiple arc-shaped matching holes on the connecting plate are the same.

[0014] Furthermore, the connector is connected to a first adapter plate and a second adapter plate, and the first adapter plate and the second adapter plate are respectively located on two sides of the connector plate.

[0015] Furthermore, the first adapter disk is connected to the first connecting pipe, and a first solenoid valve is connected between the first adapter disk and multiple first connecting pipes; the second adapter disk is connected to the second connecting pipe, and a second solenoid valve is connected between the second adapter disk and multiple second connecting pipes; the multiple first solenoid valves and second solenoid valves correspond to multiple pressure sensors respectively.

[0016] Furthermore, a lifting cylinder connected to the lifting platform is arranged on the base.

[0017] Furthermore, the top of the limit frame is flush with the top of the second limit column, the second limit column is located on one side of the stacked sheets, the first limit column is located on the other side of the stacked sheets, and the second limit column is located between the stacked sheets and the limit frame.

[0018] Furthermore, when the sensor on the first limit column does not detect the sheet material, the lifting platform drives the sheet material to rise, and when the sensor detects the sheet material, the lifting platform stops moving, and the upper end of the sheet material at the uppermost end of the lifting platform is almost flush with the top end of the first limit column and the second limit column.

[0019] (III) Beneficial effects

[0020] Compared with the prior art, the irregular PCB board feeding device provided by the present invention has the following beneficial effects:

[0021] 1. The present invention can flexibly adjust the positions of the suction cups of multiple piston cylinders on the connecting disk according to the design of the irregular end surface of the sheet material by setting a connecting disk, so that the multiple suction cups can flexibly correspond to the suckable parts on the sheet material, thereby facilitating the sucking operation of the sheet material. The connecting disk has a simple structure, and the position adjustment operation of the piston cylinder on the connecting disk is simple and clear, which brings convenience to the operator.

[0022] 2. According to the suction assembly set up in the present invention, when loading is required, the controller controls multiple first solenoid valves to open at the same time, so that the multiple first connecting pipes respectively supply air to the multiple piston cylinders through the multiple air inlet joints, so that the multiple piston rods drive the suction cups to move in the direction close to the sheet material until the suction cups touch the sheet material, the suction cups press the sheet material and detect pressure data through the pressure sensor, the data detected by the pressure sensor is transmitted to the controller, the controller compares the obtained pressure data with the pressure threshold set in the database, and after the pressure value is detected to be within the set threshold, the first solenoid valve is closed, which means that the suction cup is in a state of good contact with the sheet material, and the second solenoid valve is opened to make the second connecting pipe suck air through the suction cup to hold the sheet material, each group of suction assemblies works independently through the multiple first solenoid valves and the second solenoid valves, so that the multiple suction cups can be well sucked and touched on the sheet material according to the pressure values ​​fed back by the pressure sensor, avoiding the situation that some suction cups fail to hold the sheet material, and also avoiding the situation that some suction cups cause over-pressure damage to the sheet material, thereby ensuring the loading stability of the sheet material and reducing the loading damage of the sheet material.

[0023] 3. In the present invention, after multiple groups of suction components have completed the suction operation of the sheet material, the controller controls the air release valve to release air, and the piston rod rises under the action of the spring. The controller drives the connecting plate to move to the top of the conveyor table through the slide. Since the limit frame of the conveyor table and the second limit column are arranged flush, it is convenient for the slide to directly drive the connecting plate to reciprocate. The suction cup is controlled by the controller to stop the suction operation so that the sheet material is unloaded onto the conveyor belt. The controller then drives the connecting plate back to the material picking position and repeats the material picking operation. In this process, the material picking and unloading operations of the sheet material are only carried out by the piston rod in the piston cylinder descending to suck the sheet material through the suction cup, and the air release valve cooperates with the spring to make the sheet material follow the piston rod to rise and separate from the stacked sheet material. There is no unnecessary lifting and adjusting operation for the connecting plate, which saves the steps of loading and unloading the sheet material and improves the loading efficiency of the sheet material. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 This is a first stereoscopic diagram of a PCB board feeding device based on an irregular shape according to the present invention;

[0026] Figure 2 A second stereoscopic diagram of an irregular PCB board feeding device according to the present invention;

[0027] Figure 3 This is a front view of a PCB board feeding device based on an irregular shape according to the present invention;

[0028] Figure 4 A top view of a PCB board feeding device based on an irregular shape according to the present invention;

[0029] Figure 5 A side view of a PCB board feeding device based on an irregular shape according to the present invention;

[0030] Figure 6 This is a schematic diagram of the feeding working state of a feeding device for an irregular PCB board according to the present invention;

[0031] Figure 7 For the present invention Figure 6 Enlarged view of point A in the middle;

[0032] Figure 8 This is a schematic structural diagram of a feeding mechanism of an irregular PCB board feeding device according to the present invention;

[0033] Fig. 9 This is a structural schematic diagram of another viewing angle of a feeding mechanism of an irregular PCB board feeding device according to the present invention;

[0034] Fig.10 An exploded diagram of a feeding mechanism of an irregular PCB board feeding device according to the present invention;

[0035] Fig.11 This is an exploded view from another perspective of a feeding mechanism of an irregular PCB board feeding device according to the present invention;

[0036] Fig.12 This is a schematic diagram of the connection plate structure of an irregular PCB board feeding device according to the present invention;

[0037] Fig.13 This is a schematic structural diagram of a material suction component of an irregular PCB board feeding device according to the present invention;

[0038] The names of the components corresponding to the various figure marks in the figure are: 1. Base; 101. Lifting platform; 2. First limiting column; 201. Second limiting column; 3. Slide; 301. Connecting head; 4. Connecting plate; 401. Arc-shaped matching hole; 5. Limiting frame; 501. Conveyor belt; 6. Sheet material; 7. Sensor; 8. Piston cylinder; 801. Air inlet connector; 802. Locking nut; 803. Matching chamber; 804. Piston rod; 805. Air relief valve; 9. First adapter plate; 10. Second adapter plate; 11. Suction cup; 12. Pressure sensor; 13. Spring; 14. First connecting pipe; 15. Second connecting pipe. DETAILED DESCRIPTION

[0039] The present application is described in detail below with reference to the accompanying drawings and specific embodiments.

[0040] The following describes the implementation methods of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.

[0041] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0042] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0043] Additionally, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the examples can be practiced without these specific details.

[0044] The technical solutions provided by various embodiments of the present application are described below in conjunction with the accompanying drawings.

[0045] See also Figures 1 to 13 The present invention provides a PCB board feeding device based on an irregular shape, comprising a base 1; a conveying platform is arranged on one side of the base 1, a slide 3 is arranged above the base 1, a lifting platform 101 is connected to the base 1 through a lifting column, a plurality of sheets 6 are stacked on the lifting platform 101, a first limiting column 2 and a second limiting column 201 matched with the sheets 6 are arranged on both sides of the lifting platform 101, a sensor 7 corresponding to the sheets 6 is arranged on the first limiting column 2, the conveying platform comprises two limiting frames 5 arranged flush with the top of the second limiting column 201, and a conveyor belt 501 is arranged between the two limiting frames 5; a feeding mechanism matched with the sheets 6 is arranged on the slide 3;

[0046] The feeding mechanism includes a connecting head 301 connected to the slide seat on the slide table 3, the connecting head 301 is detachably connected to a connecting disk 4, a plurality of arc-shaped matching holes 401 are provided on the connecting disk 4, a plurality of groups of suction components are connected to the connecting disk 4 through the arc-shaped matching holes 401, each group of suction components includes a piston cylinder 8, a suction cup 11 is connected to the piston cylinder 8, and a plurality of groups of suction components in the feeding mechanism are connected to different positions on the connecting disk 4 through the plurality of arc-shaped matching holes 401, so that the plurality of suction cups 11 can be sucked at different positions of the irregular sheet material 6;

[0047] The suction assembly also includes an air intake joint 801 connected to the inner cavity of the piston cylinder 8, the air intake joint 801 is threadedly connected with a locking nut 802, the air intake joint 801 of the piston cylinder 8 passes through the arc-shaped matching hole 401 and is detachably connected to the connecting plate 4 through the locking nut 802, the piston cylinder 8 is connected with an air release valve 805, the piston end of the piston cylinder 8 is connected with a piston rod 804 connected with a suction cup 11, a pressure sensor 12 is arranged between the suction cup 11 and the piston rod 804, a spring 13 is sleeved on the piston rod 804, and the two ends of the spring 13 are respectively connected to the piston cylinder 8 and the suction cup 11, the air intake joint 801 is connected with a first connecting pipe 14, and the suction cup 11 is connected with a second connecting pipe 15;

[0048] According to the design of the end face of the irregular sheet material 6, the positions of the multiple piston cylinders 8 on the connecting disk 4 are flexibly adjusted in advance, so that the multiple suction cups 11 correspond to the suckable parts on the sheet material 6; when loading is required, the controller controls the slide seat on the slide table 3 to drive the connecting disk 4 to the material picking position above the lifting platform 101, and the controller controls the multiple first solenoid valves to be opened at the same time, so that the multiple first connecting pipes 14 respectively supply air to the multiple piston cylinders 8 through the multiple air inlet joints 801, so that the multiple piston rods 804 drive the suction cups 11 to move in the direction close to the sheet material 6. At the same time, the piston rod 804 stretches the spring 13 through the suction cup 11 until the suction cup 11 contacts the sheet material 6, and the suction cup 11 presses the sheet material 6 and detects the pressure data through the pressure sensor 12. The pressure sensor 12 detects the data obtained The pressure data is transmitted to the controller, and the controller compares the obtained pressure data with the pressure threshold set in the database. After detecting that the pressure value is at the set threshold, the first solenoid valve is closed, which means that the suction cup 11 is in a state of good contact with the sheet material 6. At the same time, by opening the second solenoid valve, the second connecting pipe 15 sucks air through the suction cup 11 to hold the sheet material 6. Each group of suction components works independently through multiple first solenoid valves and second solenoid valves, so that multiple suction cups 11 can be pressed well on the sheet material 6 according to the pressure values ​​fed back by the pressure sensor 12, avoiding the situation that some suction cups 11 fail to hold the sheet material 6, and also avoiding the situation that some suction cups 11 cause over-pressure damage to the sheet material 6, thereby ensuring the feeding stability of the sheet material 6 and reducing the feeding damage of the sheet material 6.

[0049] When multiple groups of suction components have completed the suction operation of sheet material 6, the controller controls the air release valve 805 to release air, and the piston rod 804 rises under the action of the spring 13. The controller drives the connecting plate 4 to move to the top of the conveyor table through the slide 3. Since the limit frame 5 of the conveyor table is flush with the second limit column 201, the controller controls the suction cup 11 to stop the suction operation, so that the sheet material 6 is unloaded onto the conveyor belt 501. The controller then drives the connecting plate 4 back to the material picking position and repeats the material picking operation. In this process, the material picking and unloading operations of the sheet material 6 are only carried out by the piston rod 804 in the piston cylinder 8 descending to absorb the sheet material 6 through the suction cup 11, and the air release valve 805 cooperates with the spring 13 to make the sheet material 6 follow the piston rod 804 to rise and separate from the stacked sheet material 6, so that the slide 3 directly drives the connecting plate 4 to reciprocate, and the connecting plate 4 has no unnecessary lifting and adjustment operations, which saves the steps of loading and unloading the sheet material 6 and improves the loading efficiency of the sheet material 6.

[0050] See also Figures 4 to 12A matching cavity 803 corresponding to the arc-shaped matching hole 401 is formed between the piston cylinder 8 and the locking nut 802. The arc-shaped hole distance of the arc-shaped matching hole 401 increases proportionally from the inside to the outside on the connecting disk 4. The apertures of multiple arc-shaped matching holes 401 on the connecting disk 4 are the same. The first adapter disk 9 and the second adapter disk 10 are connected to the connecting head 301. The first adapter disk 9 and the second adapter disk 10 are respectively located on both sides of the connecting disk 4. The first adapter disk 9 is connected to the first connecting pipe 14. The first solenoid valve is connected between the first adapter disk 9 and multiple first connecting pipes 14. The second adapter disk 10 is connected to the second connecting pipe 15. The second solenoid valve is connected between the second adapter disk 10 and multiple second connecting pipes 15. The multiple first solenoid valves and the second solenoid valves correspond to multiple pressure sensors 12 respectively. A lifting cylinder connected to the lifting platform 101 is provided on the base 1.

[0051] See also Figures 1 to 7 The top of the limit frame 5 is flush with the top of the second limit column 201, the second limit column 201 is located on one side of the stacked sheet 6, the first limit column 2 is located on the other side of the stacked sheet 6, and the second limit column 201 is located between the stacked sheet 6 and the limit frame 5. When the sensor 7 on the first limit column 2 does not detect the sheet 6, the lifting platform 101 drives the sheet 6 to rise. When the sensor 7 detects the sheet 6, the lifting platform 101 stops moving, and the upper end of the sheet 6 at the uppermost end of the lifting platform 101 is almost flush with the top of the first limit column 2 and the second limit column 201.

[0052] This embodiment provides a PCB board feeding device based on irregular shapes:

[0053] According to the design of the end face of the irregular sheet material 6, the positions of the multiple piston cylinders 8 on the connecting disk 4 are flexibly adjusted in advance, so that the multiple suction cups 11 correspond to the suckable parts on the sheet material 6; when loading is required, the controller controls the slide seat on the slide table 3 to drive the connecting disk 4 to the material picking position above the lifting platform 101, and the controller controls the multiple first solenoid valves to be opened at the same time, so that the multiple first connecting pipes 14 respectively supply air to the multiple piston cylinders 8 through the multiple air inlet joints 801, so that the multiple piston rods 804 drive the suction cups 11 to move in the direction close to the sheet material 6. At the same time, the piston rod 804 stretches the spring 13 through the suction cup 11 until the suction cup 11 contacts the sheet material 6, and the suction cup 11 presses the sheet material 6 and detects the pressure data through the pressure sensor 12. The pressure sensor 12 detects the data obtained The pressure data is transmitted to the controller, and the controller compares the obtained pressure data with the pressure threshold set in the database. After detecting that the pressure value is at the set threshold, the first solenoid valve is closed, which means that the suction cup 11 is in a state of good contact with the sheet material 6. At the same time, by opening the second solenoid valve, the second connecting pipe 15 sucks air through the suction cup 11 to hold the sheet material 6. Each group of suction components works independently through multiple first solenoid valves and second solenoid valves, so that multiple suction cups 11 can be pressed well on the sheet material 6 according to the pressure values ​​fed back by the pressure sensor 12, avoiding the situation that some suction cups 11 fail to hold the sheet material 6, and also avoiding the situation that some suction cups 11 cause over-pressure damage to the sheet material 6, thereby ensuring the feeding stability of the sheet material 6 and reducing the feeding damage of the sheet material 6.

[0054] When multiple groups of suction components have completed the suction operation of sheet material 6, the controller controls the air release valve 805 to release air, and the piston rod 804 rises under the action of the spring 13. The controller drives the connecting plate 4 to move to the top of the conveyor table through the slide 3. Since the limit frame 5 of the conveyor table is flush with the second limit column 201, the controller controls the suction cup 11 to stop the suction operation, so that the sheet material 6 is unloaded onto the conveyor belt 501. The controller then drives the connecting plate 4 back to the material picking position and repeats the material picking operation. In this process, the material picking and unloading operations of the sheet material 6 are only carried out by the piston rod 804 in the piston cylinder 8 descending to absorb the sheet material 6 through the suction cup 11, and the air release valve 805 cooperates with the spring 13 to make the sheet material 6 follow the piston rod 804 to rise and separate from the stacked sheet material 6, so that the slide 3 directly drives the connecting plate 4 to reciprocate, and the connecting plate 4 has no unnecessary lifting and adjustment operations, which saves the steps of loading and unloading the sheet material 6 and improves the loading efficiency of the sheet material 6.

[0055] The same and similar parts between the various embodiments in this specification can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0056] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A device for feeding irregular PCB boards, comprising a base (1); characterized in that: A conveying platform is arranged on one side of the base (1), a slide (3) is arranged above the base (1), a lifting platform (101) is connected to the base (1) via a lifting column, a plurality of sheet materials (6) are stacked on the lifting platform (101), a first limiting column (2) and a second limiting column (201) cooperating with the sheet materials (6) are arranged on both sides of the lifting platform (101), a sensor (7) corresponding to the sheet materials (6) is arranged on the first limiting column (2), the conveying platform comprises two limiting frames (5) arranged flush with the top end of the second limiting column (201), a conveyor belt (501) is arranged between the two limiting frames (5); a loading mechanism cooperating with the sheet materials (6) is arranged on the slide (3); The feeding mechanism comprises a connecting head (301) connected to a slide seat on a slide table (3); the connecting head (301) is detachably connected to a connecting disk (4); a plurality of arc-shaped matching holes (401) are provided on the connecting disk (4); a plurality of groups of suction components are connected to the connecting disk (4) through the arc-shaped matching holes (401); each group of the suction components comprises a piston cylinder (8); a suction cup (11) is connected to the piston cylinder (8); the plurality of groups of suction components in the feeding mechanism are connected to different positions on the connecting disk (4) through the plurality of arc-shaped matching holes (401), so that the plurality of suction cups (11) can be sucked at different positions of the irregular-shaped sheet material (6); The suction assembly further comprises an air intake joint (801) connected to the inner cavity of the piston cylinder (8), the air intake joint (801) being threadedly connected to a locking nut (802), the air intake joint (801) of the piston cylinder (8) passing through the arc-shaped matching hole (401) and being detachably connected to the connecting plate (4) through the locking nut (802), the piston cylinder (8) being connected to an air release valve (805), the piston end of the piston cylinder (8) being connected to a piston rod (804) connected to a suction cup (11), a pressure sensor (12) being arranged between the suction cup (11) and the piston rod (804), a spring (13) being sleeved on the piston rod (804), the two ends of the spring (13) being respectively connected to the piston cylinder (8) and the suction cup (11), the air intake joint (801) being connected to a first connecting pipe (14), and the suction cup (11) being connected to a second connecting pipe (15); The first connecting pipe (14) in the suction assembly supplies air to the piston cylinder (8) through the air inlet joint (801), so that the piston rod (804) drives the suction cup (11) to move in the direction close to the sheet material (6). The suction cup (11) presses the sheet material (6) and detects pressure data through the pressure sensor (12). When the data detected by the pressure sensor (12) is within the set pressure threshold, the first connecting pipe (14) stops supplying air to the piston cylinder (8), and the suction cup (11) sucks air through the second connecting pipe (15) to hold the sheet material (6). The air release valve (805) exhausts air, and the piston rod (804) and the suction cup (11) are driven by the spring (13) to move the sheet material (6) upward. The slide table (3) drives the connecting plate (4) on the connecting head (301) to move to the direction of the conveying table to a specified position through the slide seat, and then the sheet material (6) is unloaded onto the conveyor belt (501).

2. The irregular PCB board feeding device according to claim 1, characterized in that: A matching cavity (803) corresponding to the arc-shaped matching hole (401) is formed between the piston cylinder (8) and the locking nut (802), and the arc-shaped hole distance of the arc-shaped matching hole (401) increases proportionally from the inside to the outside on the connecting plate (4).

3. The irregular PCB board feeding device according to claim 1, characterized in that: The multiple arc-shaped matching holes (401) on the connecting plate (4) have the same hole diameter.

4. The irregular PCB board feeding device according to claim 1, characterized in that: The connector (301) is connected to a first adapter plate (9) and a second adapter plate (10), and the first adapter plate (9) and the second adapter plate (10) are respectively located on two sides of the connecting plate (4).

5. The irregular PCB board feeding device according to claim 4, characterized in that: The first adapter disk (9) is in communication with a first connecting pipe (14), and a first solenoid valve is in communication between the first adapter disk (9) and a plurality of first connecting pipes (14).

6. The irregular PCB board feeding device according to claim 5, characterized in that: The second adapter disk (10) is in communication with a second connecting pipe (15), and a second solenoid valve is in communication between the second adapter disk (10) and the plurality of second connecting pipes (15).

7. The irregular PCB board feeding device according to claim 6, characterized in that: The plurality of first solenoid valves and second solenoid valves correspond to a plurality of pressure sensors (13) respectively.

8. The irregular PCB board feeding device according to claim 1, characterized in that: The base (1) is provided with a lifting cylinder connected to the lifting platform (101).

9. The irregular PCB board feeding device according to claim 1, characterized in that: The top end of the limiting frame (5) is flush with the top end of the second limiting column (201); the second limiting column (201) is located on one side of the stacked sheet materials (6); the first limiting column (2) is located on the other side of the stacked sheet materials (6); and the second limiting column (201) is located between the stacked sheet materials (6) and the limiting frame (5).

10. The irregular PCB board feeding device according to claim 9, characterized in that: When the sensor (7) on the first limiting column (2) does not detect the sheet material (6), the lifting platform (101) drives the sheet material (6) to rise; when the sensor (7) detects the sheet material (6), the lifting platform (101) stops moving, and the upper end of the sheet material (6) at the uppermost end of the lifting platform (101) is almost flush with the top ends of the first limiting column (2) and the second limiting column (201).

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