Sheet feeding mechanism

Abstract

The utility model provides a sheet feeding mechanism, and belongs to the technical field of semiconductors. In order to solve the problem that the flatness of sheet materials is poor, the sheet feeding mechanism comprises a supply assembly, a feeding assembly, a discharging position and a mechanical arm. The material supply assembly is used for storing sheets and is connected with the feeding assembly so as to provide the sheets for the feeding assembly; the feeding assembly is used for transferring the sheets to the discharging position one by one in the first direction. The discharging position is provided with an arc-shaped surface, and the bending direction of the arc-shaped surface is opposite to that of the sheet; the mechanical arm comprises a mechanical arm main body and an execution part arranged at the tail end of the mechanical arm main body, and the execution part is used for applying pressure to the sheet on the arc-shaped surface at the discharging position to enable the sheet to be attached to the arc-shaped surface and then picking up the sheet. The arc-shaped surface of the discharging position is matched with the executing piece of the mechanical arm, reverse deformation of the sheets before picking is achieved, and therefore the flatness of the sheets is improved.

Description

Technical Field

[0001] The present application relates to the field of semiconductor technology, and in particular to a sheet material feeding mechanism. Background Art

[0002] In order to improve the integration of equipment and reduce the possibility of failure, modular design is increasingly used in the semiconductor field. Semiconductor modules usually include a mounting plate and a substrate arranged on the mounting plate, and the two are connected by a soldering plate, such as a single-sided direct cooling (SSDC) module. The SSDC module is a special power module design that aims to improve efficiency and reduce thermal resistance by directly dissipating heat on one side of the module. This design is usually used in high-power density applications such as electric vehicles, data centers, and renewable energy systems. The SSDC module includes a heat sink (i.e., a mounting plate) and a ceramic substrate (i.e., a substrate) arranged on the mounting plate, and a tin sheet (i.e., a soldering sheet) is arranged between the heat sink and the substrate to achieve welding so that the mounting plate and the substrate are reliably, evenly, and tightly fixed.

[0003] The soldering sheets in semiconductor modules, such as tin sheets, are usually cut from coiled materials, that is, the strip material is first coiled and bent into a disc shape to facilitate transportation and transfer, and then gradually unrolled and cut into sheet materials for easy use. The sheet material formed in this way will bend in the unrolling direction and have poor flatness, resulting in poor positioning accuracy during assembly with the mounting plate and substrate, and easily affecting other components, such as the flatness of the substrate. Utility Model Content

[0004] The purpose of this application is to solve the problem of poor flatness of sheet materials in the prior art. Therefore, this application provides a sheet feeding mechanism, which realizes reverse deformation before picking up the sheet by cooperating with the arc surface of the discharge position and the actuator of the mechanical arm, thereby improving the flatness of the sheet.

[0005] The embodiment of the present application provides a sheet material feeding mechanism, including a feeding component, a feeding component, a material discharging position and a mechanical arm;

[0006] The material supply assembly is used to store the sheet material and is connected to the material feeding assembly to provide the sheet material to the material feeding assembly;

[0007] The feeding assembly is used to transfer the sheets one by one along the first direction to the discharging position;

[0008] The discharge position has a curved surface, and the curved surface is opposite to the bending direction of the sheet;

[0009] The robotic arm includes a robotic arm body and an actuator disposed at the end of the robotic arm body, wherein the actuator is used to first apply pressure to the sheet on the arc surface at the discharge position so that the sheet fits the arc surface, and then pick up the sheet.

[0010] By adopting the above technical scheme, the curved surface of the discharge position opposite to the bending direction of the sheet cooperates with the actuator of the robot arm to realize reverse deformation before the sheet is picked up, thereby improving the flatness of the sheet; at the same time, the sheet is discharged one by one through the feeding assembly, so as to control the number of sheets located at the discharge position, which can improve the degree of fit between the reverse deformation of the sheet and the curved surface, and further improve the flatness of the sheet; and through the cooperation of the feeding assembly and the feeding assembly, the feeding assembly can realize uninterrupted discharge, thereby improving the loading efficiency.

[0011] In some embodiments, the discharge position further has two supporting surfaces respectively arranged at two ends of the arc-shaped surface, the supporting surfaces are used to support the ends of the sheet, and the two supporting surfaces are arranged along the first direction.

[0012] By adopting the above technical scheme, the stability of the sheet on the curved surface is improved through the supporting surface, thereby improving the sheet position accuracy, and then improving the sheet deformation accuracy and the sheet flatness; and by the two supporting surfaces being arranged along the first direction, that is, consistent with the direction in which the feeding assembly transfers the sheet to the discharge position, the discharge reliability can be improved.

[0013] In some embodiments, the feeding assembly includes a limiting frame and a pressing piece;

[0014] The limiting frame is used to limit the sheet material in the circumferential direction, and the bottom of the limiting frame is arranged as a feed port, and the feed port is located above the feeding assembly;

[0015] The material pressing member is arranged in the limiting frame and can apply pressure to the sheet material in the limiting frame along a direction toward the feeding port.

[0016] By adopting the above technical scheme, the sheet can be restricted in the circumferential direction and height through the cooperation of the limit frame and the pressure piece, thereby improving the stability of the sheet in storage, thereby improving the stability of the feeding component providing the sheet to the feeding component, and then improving the stability of sheet feeding; at the same time, by applying pressure to the sheet in the limit frame toward the feeding port through the pressure piece, the reverse deformation of the sheet can be initially achieved, thereby further improving the flatness of the sheet.

[0017] In some embodiments, the feeding assembly includes a carrier, and the carrier can be switched between a first position and a second position along the first direction;

[0018] The bearing platform is provided with a discharging portion and an abutting portion, and the discharging portion is provided with the arc surface; the bottom of the limiting frame is provided with a discharging port in the first direction;

[0019] When the carrying platform is located at the first position, the discharging portion is opposite to the feeding port and obtains the sheet in the limiting frame;

[0020] When the support platform is switched from the first position to the second position, the discharge portion supports the sheet material to be sent out from the discharge port and forms the discharge position;

[0021] When the supporting platform is located at the second position, the abutting portion abuts against the feeding port of the limiting frame.

[0022] By adopting the above technical solution, the discharge position is formed by switching the support platform between the first position and the second position, so that the feeding component has a simple structure and a small volume, which can effectively control the volume of the feeding mechanism and ensure reliable feeding.

[0023] In some embodiments, a friction surface is provided on the discharge portion, and the friction surface faces the feed port of the limiting frame, so that when the supporting platform switches from the first position to the second position, the friction surface supports and drives the sheet to be delivered from the discharge port; or,

[0024] A discharging block is disposed at one end of the discharging portion close to the abutting portion, and the height of the discharging block matches the thickness of the sheet material, so that when the supporting platform is switched from the first position to the second position, the discharging block drives the sheet material to be delivered from the discharging port; or,

[0025] The material discharging portion is connected to an air control component, so that when the supporting platform is switched from the first position to the second position, the air control component sucks the sheet material and sends it out from the material discharging port.

[0026] By adopting the above technical solution, the reliability of feeding the sheet by sheet at the discharging part of the supporting platform is improved, thereby improving the matching accuracy between the arc surface of the discharging position and the actuator of the robot arm, and further improving the flatness of the sheet.

[0027] In some embodiments, a limit frame is provided on the circumference of the carrying platform to limit the movement of the carrying platform along the first direction;

[0028] A U-shaped limiting piece is arranged above the end of the limiting frame to circumferentially limit the sheet located at the discharge position.

[0029] The adoption of the technical solution improves the reliability of the movement of the support platform and improves the safety of the sheets located at the discharge position.

[0030] In some embodiments, a detection member is provided near an end of the moving path of the carrying platform to detect the position of the carrying platform.

[0031] The above technical solution is adopted to improve the reliability of feeding.

[0032] In some embodiments, the machine further comprises a frame, on which a first driving member and a second driving member are disposed, and both the first driving member and the second driving member are cylinders;

[0033] The first driving member is connected to the carrying platform to drive the carrying platform to move along the first direction;

[0034] The second driving member is connected to the material pressing member through a connecting arm to drive the material pressing member to apply pressure to the sheet material in the limiting frame in a direction toward the material feeding port.

[0035] In some embodiments, the actuator includes two suction cups, and the two suction cups are used to first apply pressure to the sheet material on the curved surface at the discharge position so that the sheet material fits the curved surface, and then suck the sheet material.

[0036] By adopting the above technical scheme, the sheet is picked up by the suction cup, which improves the safety of sheet picking and reduces the risk of sheet damage. At the same time, it is convenient to achieve the fitting of the sheet and the curved surface through the deformation of the suction cup, thereby improving the degree of fitting of the sheet with the curved surface through reverse deformation and further improving the flatness of the sheet. At the same time, the two suction cups can further improve the degree of fitting of the sheet with the curved surface, thereby further improving the flatness of the sheet.

[0037] In some embodiments, the feeding assembly includes a supporting platform and a pushing rod, the supporting platform is used to support the sheet material, and the pushing rod is used to push the sheet material from the supporting platform to the discharging position piece by piece along the first direction.

[0038] Other features and corresponding beneficial effects of the present application are described in the latter part of the specification, and it should be understood that at least some of the beneficial effects become obvious from the records in the specification of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a schematic diagram of the structure of this application;

[0040] Figure 2 It is a partial structural diagram of this application;

[0041] Figure 3 This is a schematic diagram of the discharge position of the present application in use.

[0042] Description of reference numerals: 1, sheet; 10, frame;

[0043] 100, feeding assembly; 110, limiting frame; 120, pressing member; 121, connecting arm; 122, second driving member;

[0044] 200, feeding assembly; 210, carrying platform; 211, discharging portion; 212, abutting portion; 213, first driving member; 220, limiting frame; 221, U-shaped limiting member; 230, detecting member;

[0045] 300, discharge position; 301, arc surface; 302, support surface;

[0046] 400, robotic arm; 410, robotic arm body; 420, actuator; 421, suction cup. DETAILED DESCRIPTION

[0047] The following specific embodiments illustrate the implementation of the present application, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Although the description of the present application will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this application are limited to the implementation. On the contrary, the purpose of introducing the application in conjunction with the implementation is to cover other options or modifications that may be extended based on the claims of the present application. In order to provide a deep understanding of the present application, the following description will include many specific details. The present application can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present application, some specific details will be omitted in the description. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0048] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0049] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0050] In the description of the present application, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply 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 a limitation on the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description created by the present application, unless otherwise specified, "multiple" means two or more.

[0051] In the description of this application, 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 this application can be understood according to specific circumstances.

[0052] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0053] See also Figure 1-3 , Figure 1 This is a schematic diagram of the structure of this application; Figure 2 It is a partial structural schematic diagram of the present application, which includes a feeding assembly 100 and a feeding assembly 200, and the carrier 210 is located at a first position, and the position indicated by arrow A can form a discharge position 300; Figure 3 This is a schematic diagram of the discharge position 300 of the present application in use, wherein the sheet 1 is located on the discharge position 300 , and for the sake of clarity, this schematic diagram exaggerates the curvature of the sheet 1 and the arcuate surface 301 to a certain extent.

[0054] The embodiment of the present application provides a sheet material loading mechanism, including a feeding assembly 100 , a feeding assembly 200 , a material discharge position 300 and a robotic arm 400 .

[0055] Specifically, the supply assembly 100 is used to store the sheet material 1 and is connected to the feeding assembly 200 to provide the sheet material 1 to the feeding assembly 200 .

[0056] The feeding assembly 200 is used to transfer the sheets 1 piece by piece along a first direction to the discharge position 300 .

[0057] The discharge position 300 has a curved surface 301 , and the curved surface 301 is opposite to the bending direction of the sheet 1 .

[0058] The robot 400 includes a robot body 410 and an actuator 420 disposed at the end of the robot body 410. The actuator 420 is used to first apply pressure to the sheet 1 located on the curved surface 301 of the discharge position 300 so that the sheet 1 fits the curved surface 301, and then pick up the sheet 1.

[0059] This method realizes the reverse deformation of the sheet 1 before picking up by cooperating with the arc surface 301 of the discharge position 300 in the opposite direction to the bending direction of the sheet 1 and the actuator 420 of the robot 400. In the process of picking up and transferring the sheet 1 by the actuator 420, the reversely deformed sheet 1 can gradually recover to the original direction and offset its original bending deformation, thereby improving the flatness of the sheet 1. In addition, compared with adjusting the flatness of the sheet 1 by other mechanisms alone, this mechanism combines the flatness adjustment structure with the feeding structure, which can effectively control the overall volume and improve the feeding efficiency.

[0060] At the same time, the feeding assembly 200 realizes sheet-by-sheet discharge and can control the number of sheets 1 located at the discharge position 300 , thereby increasing the pressure applied by the actuator 420 of the robot 400 to make the sheet 1 deform in reverse and fit the curved surface 301 , further improving the flatness of the sheet 1 .

[0061] Furthermore, the cooperation between the feeding assembly 100 and the feeding assembly 200 can realize uninterrupted material discharge of the feeding assembly 200, thereby improving the feeding efficiency.

[0062] In one embodiment, the discharge position 300 also has two supporting surfaces 302 respectively arranged at the two ends of the arc surface 301, and the supporting surfaces 302 are used to support the ends of the sheet 1, so that the stability of the sheet 1 on the arc surface 301 is higher, thereby improving the position accuracy of the sheet 1, and then improving the deformation accuracy of the sheet 1 and improving the flatness of the sheet 1.

[0063] In one embodiment, the two supporting surfaces 302 are arranged along a first direction, that is, consistent with the direction in which the feeding assembly 200 transfers the sheet 1 to the discharge position 300, thereby improving the discharge reliability.

[0064] In one embodiment, the feeding assembly 100 includes a limiting frame 110 and a pressing member 120 .

[0065] Specifically, the limiting frame 110 is used to limit the sheet 1 in the circumferential direction, and the bottom of the limiting frame 110 is configured as a feed port, which is located above the feeding assembly 200 .

[0066] The pressing member 120 is disposed in the limiting frame 110 and can apply pressure to the sheet 1 in the limiting frame 110 along a direction toward the feeding port.

[0067] This method achieves circumferential and height restrictions on the sheet 1 by cooperating with the limit frame 110 and the pressure piece 120, thereby improving the stability of the sheet 1 in storage, thereby improving the stability of the feeding component 100 providing the sheet 1 to the feeding component 200, and further improving the feeding stability of the sheet 1.

[0068] At the same time, by applying pressure to the sheet 1 in the limiting frame 110 in the direction of the material pressing member 120 toward the material feeding port, the reverse deformation of the sheet 1 can be preliminarily achieved, thereby further improving the flatness of the sheet 1 .

[0069] It is understandable that the pressing member 120 controls the magnitude of the pressure applied thereto as the number of sheets 1 in the limiting frame 110 changes, thereby avoiding damage to the sheets 1 and facilitating the subsequent feeding assembly 200 to feed out the sheets 1 .

[0070] In one embodiment, the feeding assembly 200 includes a carrier 210 , and the carrier 210 can be switched between a first position and a second position along a first direction.

[0071] The carrying platform 210 is provided with a discharge portion 211 and a contact portion 212 , and the discharge portion 211 is provided with an arc surface 301 .

[0072] A discharge port is provided at the bottom of the limiting frame 110 in the first direction.

[0073] When the carrying platform 210 is located at the first position, the discharging portion 211 is opposite to the feeding port and obtains the sheet 1 in the limiting frame 110 .

[0074] When the support platform 210 is switched from the first position to the second position, the discharge portion 211 supports the sheet 1 to be discharged from the discharge port, and a discharge position 300 is formed at the A position.

[0075] When the carrying platform 210 is located at the second position, the abutting portion 212 abuts against the feeding port of the limiting frame 110 .

[0076] In this manner, the material discharging position 300 is formed by switching the support platform 210 between the first position and the second position, so that the feeding assembly 200 has a simple structure and a small volume, and can effectively control the volume of the feeding mechanism while ensuring reliable feeding.

[0077] It can be understood that the size of the discharge port is adapted to the size of the sheet 1 being fed out, so as to ensure that the feeding assembly 200 feeds the sheet one by one.

[0078] In one embodiment, a friction surface is provided on the discharge portion 211, and the friction surface faces the feed port of the limit frame 110, so that when the support platform 210 switches from the first position to the second position, the friction surface supports and drives the sheet 1 to be sent out from the discharge port, which can improve the reliability of the sheet-by-sheet feeding of the discharge portion 211 of the support platform 210, thereby improving the matching accuracy between the arc surface 301 of the discharge position 300 and the actuator 420 of the robot arm 400, and further improving the flatness of the sheet 1.

[0079] In order to improve the reliability of feeding the sheet by sheet by the discharge portion 211 of the supporting platform 210, in other alternative embodiments, a discharge block is provided at one end of the discharge portion 211 close to the abutment portion 212, and the height of the discharge block matches the thickness of the sheet 1, so that when the supporting platform 210 switches from the first position to the second position, the discharge block drives the sheet 1 to be fed out from the discharge port.

[0080] In other alternative embodiments, the discharge portion 211 is connected to an air control component so that when the support platform 210 switches from the first position to the second position, the air control component sucks the sheet 1 and sends it out from the discharge port, which can also improve the reliability of the discharge portion 211 of the support platform 210 in feeding the sheet one by one.

[0081] It is understandable that the above methods for improving the reliability of feeding piece by piece by the discharge portion 211 of the carrier 210 can also be combined with two or all or other methods to further improve the reliability of feeding piece by piece by the discharge portion 211 of the carrier 210.

[0082] In one embodiment, a limit frame 220 is disposed on the circumference of the carrying platform 210 to limit the movement of the carrying platform 210 along the first direction, thereby improving the movement reliability of the carrying platform 210 .

[0083] In one embodiment, a detection member 230 is provided near the end of the moving path of the carrier 210 to detect the position of the carrier 210, thereby improving the reliability of loading. The detection member 230 can be, but is not limited to, a proximity switch, a photoelectric switch, and the like.

[0084] In one embodiment, a U-shaped limiting member 221 is disposed above the end of the limiting frame 220 to circumferentially limit the sheet 1 located on the discharge position 300 , thereby improving the safety of the sheet 1 located on the discharge position 300 .

[0085] In one embodiment, the feeding mechanism further includes a frame 10 , on which a first driving member 213 and a second driving member 122 are disposed.

[0086] Specifically, the first driving member 213 is connected to the carrying platform 210 to drive the carrying platform 210 to move along the first direction.

[0087] The second driving member 122 is connected to the pressing member 120 via the connecting arm 121 to drive the pressing member 120 to apply pressure to the sheet 1 in the limiting frame 110 along the direction toward the feeding port.

[0088] In one embodiment, the first driving member 213 and the second driving member 122 are both cylinders, thereby ensuring efficient reciprocating movement of the supporting platform 210 and the pressing member 120, improving the loading efficiency, and being light and simple in structure, thereby reducing the volume and weight of the mechanism.

[0089] In other alternative embodiments, at least one of the first driving member 213 and the second driving member 122 is a linear motor.

[0090] In one embodiment, the actuator 420 includes two suction cups 421 , which are used to first apply pressure to the sheet 1 located on the curved surface 301 of the discharge position 300 so that the sheet 1 fits the curved surface 301 , and then suck the sheet 1 .

[0091] This method uses the suction cup 421 to pick up the sheet 1, which improves the safety of picking up the sheet 1 and reduces the risk of damage to the sheet 1. In addition, the suction cup 421 is deformed to facilitate the sheet 1 to fit the curved surface 301, which improves the degree of fit between the reverse deformation of the sheet 1 and the curved surface 301, and further improves the flatness of the sheet 1. At the same time, the two suction cups 421 can further improve the fit between the sheet 1 and the curved surface 301, thereby further improving the flatness of the sheet 1.

[0092] In one embodiment, the feeding assembly 200 includes a supporting platform 210 and a pushing rod, the supporting platform 210 is used to support the sheet 1, and the pushing rod is used to push the sheet 1 from the supporting platform 210 to the discharge position 300 piece by piece along the first direction, so that the discharge position 300 is separated from the feeding assembly 200, which facilitates the assembly of the feeding assembly 200.

[0093] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A sheet material feeding mechanism, characterized in that: It includes a feeding component, a feeding component, a discharging position and a mechanical arm; The material supply assembly is used to store the sheet material and is connected to the material feeding assembly to provide the sheet material to the material feeding assembly; The feeding assembly is used to transfer the sheets one by one along the first direction to the discharging position; The discharge position has a curved surface, and the curved surface is opposite to the bending direction of the sheet; The robotic arm includes a robotic arm body and an actuator disposed at the end of the robotic arm body, wherein the actuator is used to first apply pressure to the sheet on the arc surface at the discharge position so that the sheet fits the arc surface, and then pick up the sheet.

2. The sheet material feeding mechanism according to claim 1, characterized in that: The material discharging position further comprises two supporting surfaces which are respectively arranged at two ends of the arc-shaped surface, the supporting surfaces are used to support the ends of the sheet material, and the two supporting surfaces are arranged along the first direction.

3. The sheet material feeding mechanism according to claim 1, characterized in that: The feeding assembly comprises a limiting frame and a pressing piece; The limiting frame is used to limit the sheet material in the circumferential direction, and the bottom of the limiting frame is set as a feed port, and the feed port is located above the feeding assembly; The material pressing member is arranged in the limiting frame and can apply pressure to the sheet material in the limiting frame along a direction toward the feeding port.

4. The sheet material feeding mechanism according to claim 3, characterized in that: The feeding assembly includes a carrying platform, and the carrying platform can be switched between a first position and a second position along the first direction; The bearing platform is provided with a discharging portion and an abutting portion, and the discharging portion is provided with the arc surface; the bottom of the limiting frame is provided with a discharging port in the first direction; When the carrying platform is located at the first position, the discharging portion is opposite to the feeding port and obtains the sheet in the limiting frame; When the support platform is switched from the first position to the second position, the discharge portion supports the sheet material to be discharged from the discharge port and forms the discharge position; When the supporting platform is located at the second position, the abutting portion abuts against the feeding port of the limiting frame.

5. The sheet material feeding mechanism according to claim 4, characterized in that: The discharge portion is provided with a friction surface, the friction surface faces the feed port of the limiting frame, so that when the bearing platform switches from the first position to the second position, the friction surface supports and drives the sheet to be delivered from the discharge port; or, A discharging block is provided at one end of the discharging portion close to the abutting portion, and the height of the discharging block matches the thickness of the sheet material, so that when the supporting platform is switched from the first position to the second position, the discharging block drives the sheet material to be delivered from the discharging port; or, The material discharging portion is connected to an air control component, so that when the supporting platform is switched from the first position to the second position, the air control component sucks the sheet material and sends it out from the material discharging port.

6. The sheet material feeding mechanism according to claim 4, characterized in that: A limit frame is provided on the circumference of the carrying platform to limit the movement of the carrying platform along the first direction; A U-shaped limiting piece is arranged above the end of the limiting frame to circumferentially limit the sheet located at the discharge position.

7. The sheet material feeding mechanism according to claim 4, characterized in that: A detection member is provided near the end of the moving path of the carrying platform to detect the position of the carrying platform.

8. The sheet material feeding mechanism according to any one of claims 4 to 7, characterized in that: The machine also includes a frame, on which a first driving member and a second driving member are arranged, and both the first driving member and the second driving member are cylinders; The first driving member is connected to the carrying platform to drive the carrying platform to move along the first direction; The second driving member is connected to the material pressing member through a connecting arm to drive the material pressing member to apply pressure to the sheet material in the limiting frame in a direction toward the material feeding port.

9. The sheet material feeding mechanism according to any one of claims 1 to 8, characterized in that: The actuator includes two suction cups, and the two suction cups are used to first apply pressure to the sheet material on the arc surface at the discharge position so that the sheet material fits the arc surface, and then suck the sheet material.

10. The sheet material feeding mechanism according to claim 1, characterized in that: The feeding assembly includes a bearing platform and a pushing rod, wherein the bearing platform is used to support the sheet material, and the pushing rod is used to push the sheet material from the bearing platform to the discharging position piece by piece along the first direction.

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