Feeding device

Abstract

The invention provides a feeding device which comprises a positioning assembly and a feeding assembly, the positioning assembly is annularly arranged, a material transferring area is arranged in the middle of the positioning assembly, the positioning assembly is provided with an opening, the opening communicates with the material transferring area, and the size of the material transferring area is adjustable; the transporting frame is used for transporting materials, the transporting frame can enter the material transferring area through the opening, and the positioning assembly can limit the position of the transporting frame in the material transferring area; and the sensing part is arranged at the opening and is used for detecting a moving object at the opening. By the adoption of the scheme, the problem that in the prior art, rapid and accurate positioning and placing of materials are difficult to achieve can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of feeding, in particular to a feeding device. Background Art

[0002] During the processing of parts, parts usually need to go through complex multiple processes, such as processing, testing, cleaning, etc. These processes have strict requirements on the feeding position accuracy of parts to ensure the processing quality and the smooth progress of subsequent processing. However, when feeding, the existing feeding devices often have difficulty in achieving fast and accurate positioning and placement of materials, resulting in limited efficiency of the production line and even material handling errors. Summary of the invention

[0003] The present invention provides a feeding device to solve the problem in the prior art that it is difficult to quickly and accurately position and place materials.

[0004] The present invention provides a feeding device, which includes: a positioning component, which is arranged in a ring, the middle part of the positioning component is a material transfer area, the positioning component has an opening, the opening is connected to the material transfer area, and the size of the material transfer area is adjustable; a transport frame, which is used to transport materials, the transport frame can enter the material transfer area through the opening, and the positioning component can limit the position of the transport frame in the material transfer area; a sensing part, which is arranged at the opening, and the sensing part is used to detect moving objects at the opening.

[0005] Furthermore, the positioning assembly includes: a first limiting portion and two second limiting portions, the first limiting portion extends along a first direction, the second limiting portion extends along a second direction, the first direction and the second direction have an angle, the two ends of the first limiting portion are respectively connected to the first end of the second limiting portion, the first limiting portion and the two second limiting portions cooperate to enclose a material transfer area, an opening is formed between the second ends of the two second limiting portions, and the spacing between the two second limiting portions is adjustable.

[0006] Furthermore, the second limiting portion includes: a fixed seat, extending along the second direction, the fixed seat is connected to one end of the first limiting portion; a limiting member, arranged on the fixed seat and arranged toward the inner side of the material transfer area, the limiting member can move along the first direction relative to the fixed seat; a first driving member, arranged on the fixed seat, the first driving member is drivingly connected to the limiting member to drive the limiting member to move in the first direction; wherein the limiting members of the two second limiting portions are arranged facing each other.

[0007] Furthermore, the limiting member includes: a fixed plate, which extends along the second direction, and the fixed plate has an inner side surface and an outer side surface relative to the material transfer area, the first driving member is drivingly connected to the outer side surface, and the inner side surface is arranged toward the material transfer area; a plurality of guide members, the plurality of guide members are rotatably arranged on the inner side surface, the plurality of guide members are distributed along the extension direction of the fixed plate, the rotation axis of the guide members extends along the vertical direction, and the guide members are used to guide the transport frame to move into the material transfer area.

[0008] Furthermore, the second limiting portion also includes: a stopper, which is movably arranged on the fixed seat, the stopper is close to an end of the fixed seat away from the first limiting portion, the stopper has a stop position for rotating to the material transfer area and an avoidance position for rotating out of the material transfer area, and the stopper is used to stop the transport rack located in the material transfer area.

[0009] Further, the stop member includes a connecting section and a stop section that are relatively arranged, the stop member is rotatably arranged on a fixed seat, the rotating shaft of the stop member is located at the connection between the connecting section and the stop section, and the rotating shaft extends in a vertical direction, and the second limiting portion also includes: a second driving member, which is arranged on the fixed seat, and the second driving member is drivingly connected to the connecting section to drive the stop section to rotate between the stop position and the avoidance position through the rotating shaft.

[0010] Furthermore, the transport rack comprises: a base frame, the bottom of which is provided with rollers; and a plurality of placement racks, the plurality of placement racks are stacked on the base frame, and the placement racks are used to place materials.

[0011] Furthermore, a plug-in structure is provided between the base frame and the placement rack, and between two adjacent placement racks. The base frame is detachably connected to the placement rack via the plug-in structure, and the two adjacent placement racks are detachably connected via the plug-in structure.

[0012] Furthermore, the plug-in structure includes: a plug-in protrusion, which is arranged on the top of the base frame and the top of the placement rack; a plug-in hole, which is arranged at the bottom of the placement rack, the plug-in hole is adapted to the position of the plug-in protrusion, the plug-in protrusion on the base frame is plug-connected with the plug-in hole of the placement rack, and between two adjacent placement racks, the plug-in protrusion of the placement rack on the lower layer is plug-connected with the placement rack on the upper layer.

[0013] Furthermore, the placement rack includes: a bottom frame, on which a limit groove is arranged, the limit groove is used to place materials, and the size of the limit groove is adjustable; a plurality of support rods, the plurality of support rods are distributed at intervals along the circumference of the bottom frame, and the support rods extend in the vertical direction; a limit rack, which is arranged on the support rods, the limit rack and the bottom frame are spaced apart in the vertical direction, and the limit member cooperates with the bottom frame to limit the position of the material in the vertical direction.

[0014] According to the technical solution of the present invention, the feeding device is composed of a positioning component, a transport frame and a sensing part. The positioning components are arranged in a ring to form a hollow area, which is a material transfer area. The size of the material transfer area can be flexibly adjusted according to the situation to meet various material processing needs. The positioning component is provided with an opening connected to the material transfer area, providing a channel for the entry and removal of materials. The transport frame can enter from the opening and be restricted in the material transfer area by the positioning component. A sensing part is provided at the opening to prevent personnel from entering the material transfer device during operation, thereby improving the safety of material feeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0016] Figure 1 A schematic structural diagram of a feeding device provided in an embodiment of the present invention is shown;

[0017] Figure 2 A schematic diagram of the structure of a positioning assembly provided by an embodiment of the present invention is shown;

[0018] Figure 3 A schematic diagram of the structure of a transport rack provided by an embodiment of the present invention is shown;

[0019] Figure 4 A schematic structural diagram of a placement rack provided in an embodiment of the present invention is shown.

[0020] The above drawings include the following reference numerals:

[0021] 10. Positioning components;

[0022] 11. A first limiting portion;

[0023] 12. The second limiting part;

[0024] 121, fixed seat;

[0025] 122, limiting member; 1221, fixing plate; 1222, guiding member;

[0026] 123. A first driving member;

[0027] 124, stopper; 1241, connecting section; 1242, stopper section;

[0028] 125. A second driving member;

[0029] 20. Transport rack;

[0030] 21. Base frame;

[0031] 22. Roller;

[0032] 23. Placement rack; 2301. Plug-in protrusion; 2302. Plug-in hole;

[0033] 231, bottom frame; 2311, limiting groove;

[0034] 232, support rod;

[0035] 233, limit frame;

[0036] 30. Sensing department. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. 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.

[0038] like Figure 1 As shown, the present invention provides a feeding device, which includes a positioning assembly 10, a transport frame 20 and a sensing part 30. The positioning assembly 10 is arranged in a ring shape, and the middle part of the positioning assembly 10 is a material transfer area. The positioning assembly 10 has an opening, which is connected to the material transfer area, and the size of the material transfer area is adjustable. The transport frame 20 is used to transport materials, and the transport frame 20 can enter the material transfer area through the opening. The positioning assembly 10 can limit the position of the transport frame 20 in the material transfer area. The sensing part 30 is arranged at the opening, and the sensing part 30 is used to detect moving objects at the opening.

[0039] By applying the technical solution of the present invention, the feeding device is composed of a positioning component 10, a transport frame 20 and a sensing part 30. Among them, the positioning component 10 is arranged in a ring to form a transfer area with an empty center. The size of the transfer area can be flexibly adjusted according to the situation to meet various material processing needs. The positioning component 10 is provided with an opening connected to the transfer area, providing a channel for the entry and removal of materials. The transport frame 20 can enter from the opening and be restricted in the transfer area by the positioning component 10, which can avoid the problem of the transport frame being offset during the feeding process, resulting in the inability to accurately position the parts, thereby improving the feeding efficiency. The sensing part 30 is provided at the opening to prevent personnel from entering the material device during operation, thereby improving the safety of feeding.

[0040] like Figure 2 As shown, the positioning assembly 10 includes a first limiting portion 11 and two second limiting portions 12, the first limiting portion 11 extends along a first direction, the second limiting portion 12 extends along a second direction, the first direction and the second direction have an angle, the two ends of the first limiting portion 11 are respectively connected to the first ends of the second limiting portions 12, the first limiting portion 11 and the two second limiting portions 12 cooperate to enclose a material transfer area, an opening is formed between the second ends of the two second limiting portions 12, and the spacing between the two second limiting portions 12 is adjustable.

[0041] In this embodiment, the positioning assembly 10 is composed of a first limiting portion 11 and two second limiting portions 12, which together form a material transfer area to ensure the stability and safety of the transport rack 20 during the material transfer process. The first limiting portion 11 extends along the first direction, and the second limiting portion 12 extends along the second direction. Among them, the first limiting portion 11 is used to limit the displacement of the transport rack 20 in the second direction, and the second limiting portion 12 is used to limit the displacement of the transport rack 20 in the first direction, thereby avoiding the problem that the transport rack 20 moves during the feeding process and the parts cannot be accurately placed. An opening is formed between the second ends of the two second limiting portions 12, and the size of the opening is adjustable to facilitate the entry of different transport racks 20.

[0042] Further, the second limiting portion 12 includes a fixed seat 121, a limiting member 122 and a first driving member 123. The fixed seat 121 extends along the second direction, and the fixed seat 121 is connected to one end of the first limiting portion 11. The limiting member 122 is arranged on the fixed seat 121 and is arranged toward the inner side of the material transfer area, and the limiting member 122 can move along the first direction relative to the fixed seat 121. The first driving member 123 is arranged on the fixed seat 121, and the first driving member 123 is drivingly connected to the limiting member 122 to drive the limiting member 122 to move in the first direction; wherein the limiting members 122 of the two second limiting portions 12 are arranged facing each other.

[0043] In this embodiment, the fixed seat 121 extends along the second direction, and one end thereof is connected to the first limiting part 11, forming a part of the entire limiting system. The limiting member 122 is installed on the fixed seat 121, and the limiting member 122 is arranged toward the inner side of the material transfer area, and is used to directly contact and limit the position of the transport rack 20. The first driving member 123 is arranged on the fixed seat 121, and is drivingly connected to the limiting member 122, and is used to drive the limiting member 122 to move along the first direction. Two groups of second limiting parts 12 are respectively arranged on both sides of the material transfer area, and are arranged facing each other. Under the drive of the first driving member 123, the two limiting parts can simultaneously approach or move away from the center of the material transfer area, and the transport rack 20 is bidirectionally limited, ensuring the stability of the transport rack 20 in the first direction in the material transfer area. The opposite arrangement can also adapt to transport racks 20 of different sizes by adjusting the distance between the two second limiting parts 12, thereby improving the versatility and flexibility of the positioning assembly 10.

[0044] Specifically, the material of the fixing seat 121 is usually selected from high-strength steel or light alloy to ensure sufficient firmness and stability.

[0045] Specifically, the first driving member 123 may be an electric cylinder, a pneumatic cylinder or a hydraulic cylinder, which can realize rapid adjustment and stable limiting of the limiting member 122 through precise displacement control.

[0046] Further, the stopper 122 includes a fixed plate 1221 and a plurality of guide members 1222. The fixed plate 1221 extends along the second direction, and the fixed plate 1221 has an inner side and an outer side relative to the material transfer area. The first driving member 123 is drivingly connected to the outer side, and the inner side is arranged toward the material transfer area. The plurality of guide members 1222 are rotatably arranged on the inner side, and the plurality of guide members 1222 are distributed along the extension direction of the fixed plate 1221, and the rotation axis of the guide members 1222 extends along the vertical direction. The guide members 1222 are used to guide the transport rack 20 to move into the material transfer area.

[0047] In this embodiment, the fixed plate 1221 extends along the second direction to form a stable plane. The outer side surface of the fixed plate 1221 is connected to the first driving member 123, and the first driving member 123 is used to provide a force so that the fixed plate 1221 can move along the first direction and abut against one end of the transport rack 20 of different sizes. The inner side surface of the fixed plate 1221 faces the material transfer area, and the inner side surface of the fixed plate 1221 is provided with a plurality of guide members 1222 for guiding the precise movement of the transport rack 20. The rotation axis of the guide member 1222 is arranged in the vertical direction, so that even under the action of gravity, the guide member 1222 can remain stable and avoid horizontal deviation.

[0048] Specifically, the guide member 1222 can be a plurality of rollers or wheels 22, which are rotatably mounted on the inner side of the fixed plate 1221 and are evenly distributed along the extension direction of the fixed plate 1221. The main function of the guide member 1222 is to guide the transport rack 20 to move smoothly to the material transfer area, reduce friction and vibration during the movement, and ensure the accurate docking of the transport rack 20 with the material transfer area.

[0049] Furthermore, the second limiting portion 12 also includes a stopper 124, which is movably disposed on the fixed seat 121. The stopper 124 is close to the end of the fixed seat 121 away from the first limiting portion 11. The stopper 124 has a stop position for rotating to the transfer area and an avoidance position for rotating out of the transfer area. The stopper 124 is used to stop the transport rack 20 located in the transfer area.

[0050] In this embodiment, the stopper 124 of the second limiting portion 12 is a movable component that can rotate on the fixed seat 121 to perform two functions: stopping and avoiding. When it is necessary to stop the transport rack 20 entering the material transfer area, the stopper 124 rotates to the stop position through the rotating shaft, and the stopper 124 contacts the transport rack 20 to prevent the further movement of the transport rack 20, thereby ensuring the stable position of the material in the material transfer area. When the material processing is completed and the transport rack 20 needs to be moved out of the material transfer area, the stopper 124 rotates to the avoidance position, and the stopper 124 rotates out of the range of the material transfer area and no longer blocks the transport rack 20, so as to facilitate the free movement of the transport rack 20. The switching of the stopper 124 between the two positions needs to be designed to be both rapid and stable to avoid negative impact on the efficiency of the production line.

[0051] Furthermore, the stop member 124 includes a connecting section 1241 and a stop section 1242 that are relatively arranged. The stop member 124 is rotatably arranged on the fixed seat 121. The rotating shaft of the stop member 124 is located at the connection between the connecting section 1241 and the stop section 1242, and the rotating shaft extends in the vertical direction. The second limiting portion 12 also includes a second driving member 125. The second driving member 125 is arranged on the fixed seat 121. The second driving member 125 is drivingly connected to the connecting section 1241 to drive the stop section 1242 to rotate between the stop position and the avoidance position through the rotating shaft.

[0052] In this embodiment, the stopper 124 is composed of a connecting section 1241 and a stopper section 1242. The connecting section 1241 is connected to the fixed seat 121 through a rotating shaft, and the design of the rotating shaft enables it to rotate freely in the vertical direction. The stopper section 1242 is arranged toward the inner side of the material transfer area to directly contact and stop the material. The second driving member 125 is arranged on the fixed seat 121, drivingly connected to the connecting section 1241, and driving the stopper section 1242 to rotate between the stop position and the avoidance position through the rotating shaft.

[0053] Specifically, the shape and size of the stopping section 1242 can be designed according to the shape of the transport rack 20 to ensure a stable and safe stopping effect.

[0054] like Figure 3 As shown, the transport rack 20 includes a base frame 21 and a plurality of placement racks 23. The base frame 21 has rollers 22 at the bottom, and a plurality of placement racks 23 are stacked on the base frame 21, and the placement racks 23 are used to place materials. In this embodiment, the base frame 21 is the basic part of the transport rack 20, and plays the role of carrying all parts and placement racks 23. The base frame 21 is equipped with rollers 22 at the bottom, which is convenient for easy movement between different workstations, reducing manpower handling, and improving logistics efficiency.

[0055] The stop section 1242 cooperates with and abuts against the side of the base frame 21 to limit the transport rack 20 . Such a setting can form a stable stop for the transport rack 20 and avoid obstruction to the placement rack 23 .

[0056] Specifically, the roller 22 should be a high-quality roller 22 with low noise, high load capacity and good grip to adapt to the high-speed operation environment of the production line. The chassis 21 of the transport rack 20 should also be equipped with a brake system to facilitate stable parking at locations such as the transfer area where positioning operations are required.

[0057] Further, a plug-in structure is provided between the base frame 21 and the placement rack 23, and between two adjacent placement racks 23. The base frame 21 is detachably connected to the placement rack 23 through the plug-in structure, and the two adjacent placement racks 23 are detachably connected through the plug-in structure. In this embodiment, the base frame 21 and the placement rack 23, and between two adjacent placement racks 23, are detachably connected through the provided plug-in structure. The plug-in structure requires a certain degree of tightness to prevent loosening during operation, and is designed to be easily disassembled, which can be achieved by spring force, magnetic attraction, or a simple mechanical locking mechanism.

[0058] Further, the plug-in structure includes a plug-in protrusion 2301 and a plug-in hole 2302. The plug-in protrusion 2301 is arranged on the top of the base frame 21 and the top of the placement rack 23. The plug-in hole 2302 is arranged at the bottom of the placement rack 23, and the plug-in hole 2302 is adapted to the position of the plug-in protrusion 2301. The plug-in protrusion 2301 on the base frame 21 is plug-connected with the plug-in hole 2302 of the placement rack 23. Between two adjacent placement racks 23, the plug-in protrusion 2301 of the placement rack 23 on the lower layer is plug-connected with the placement rack 23 on the upper layer.

[0059] In this embodiment, the top of the base frame 21 and the placement rack 23 are designed with a plurality of plug-in protrusions 2301, and the bottom of the base frame 21 and the placement rack 23 is provided with plug-in holes 2302 adapted to the plug-in protrusions 2301, and the shape of the hole matches the plug-in protrusions 2301, so as to facilitate fast and accurate plug-in. After the plug-in protrusions 2301 on the base frame 21 are aligned with the plug-in holes 2302 at the bottom of the placement rack 23, the plug-in connection can be achieved by simply pressing down, without the need for additional fasteners or tools, thereby improving the convenience and efficiency of the connection.

[0060] Specifically, the protrusions may be cylindrical, prismatic or hemispherical, and their size and spacing must match the plug holes 2302. The protrusion material should be a high-strength and wear-resistant alloy to ensure structural stability and durability during frequent plugging.

[0061] like Figure 4As shown, the placement rack 23 includes a bottom frame 231, and a limiting groove 2311 is provided on the bottom frame 231. The limiting groove 2311 is used to place materials, and the size of the limiting groove 2311 is adjustable. A plurality of support rods 232 are distributed at intervals along the circumference of the bottom frame 231, and the support rods 232 extend in the vertical direction. The limiting rack 233 is arranged on the support rods 232, and the limiting rack 233 and the bottom frame 231 are spaced in the vertical direction. The limiting rack 233 cooperates with the bottom frame 231 to limit the position of the material in the vertical direction.

[0062] In this embodiment, the bottom frame 231 is provided with a limiting groove 2311 for placing and positioning materials. The limiting groove 2311 is detachably connected to the bottom frame 231, and different limiting grooves 2311 can be replaced according to the needs of the parts, so that the placement rack 23 can adapt to parts of different sizes, thereby improving the versatility and flexibility of the placement rack 23. Specifically, a plurality of support rods 232 are evenly spaced around the bottom frame 231, and these support rods 232 extend in the vertical direction to support and reinforce the bottom frame 231, thereby ensuring the structural stability of the placement rack 23. The limiting rack 233 is arranged on the top of the support rod 232, and maintains a certain interval with the bottom frame 231 in the vertical direction. The limiting rack 233 cooperates with the limiting groove 2311 on the bottom frame 231 to limit the position of the parts in the vertical direction, prevent the parts from floating up and down, and ensure the stability of the position of the parts during processing, testing or cleaning.

[0063] In another embodiment of the present invention, a guide rail and a plurality of protrusions are provided on the limiting groove 2311, and the plurality of protrusions can move along the guide rail, and the position of the protrusions on the guide rail can be adjusted according to the requirements of the parts. A locking mechanism is provided on the guide rail, and when the protrusion slides to a specified position, the locking mechanism is immediately locked to limit the position of the part.

[0064] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0065] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0066] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0067] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0068] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A feeding device, characterized in that: The feeding device comprises: A positioning component (10), the positioning component (10) is arranged in an annular shape, the middle part of the positioning component (10) is a material transfer area, the positioning component (10) has an opening, the opening is connected to the material transfer area, and the size of the material transfer area is adjustable; A transport rack (20) for transporting materials, wherein the transport rack (20) can enter the material transfer area through the opening, and the positioning assembly (10) can limit the position of the transport rack (20) in the material transfer area; A sensing portion (30) is arranged at the opening, and the sensing portion (30) is used to detect a moving object at the opening.

2. The feeding device according to claim 1, characterized in that: The positioning assembly (10) comprises: A first limiting portion (11) and two second limiting portions (12), wherein the first limiting portion (11) extends along a first direction, and the second limiting portion (12) extends along a second direction, and the first direction and the second direction have an included angle, and the two ends of the first limiting portion (11) are respectively connected to the first end of the second limiting portion (12), and the first limiting portion (11) and the two second limiting portions (12) cooperate to enclose the material transfer area, and the opening is formed between the second ends of the two second limiting portions (12), and the spacing between the two second limiting portions (12) is adjustable.

3. The feeding device according to claim 2, characterized in that: The second limiting portion (12) comprises: A fixing seat (121) extending along the second direction, the fixing seat (121) being connected to one end of the first limiting portion (11); A limiting member (122) is arranged on the fixing seat (121) and is arranged toward the inner side of the material transfer area, and the limiting member (122) can move along the first direction relative to the fixing seat (121); A first driving member (123) is arranged on the fixing seat (121), and the first driving member (123) is drivingly connected to the limiting member (122) to drive the limiting member (122) to move in the first direction; Wherein, the limiting members (122) of the two second limiting portions (12) are arranged facing each other.

4. The feeding device according to claim 3, characterized in that: The limiting member (122) comprises: a fixed plate (1221), the fixed plate (1221) extending along the second direction, the fixed plate (1221) having an inner side surface and an outer side surface relative to the material transfer area, the first driving member (123) being drivingly connected to the outer side surface, and the inner side surface being arranged toward the material transfer area; A plurality of guide members (1222), wherein the plurality of guide members (1222) are rotatably arranged on the inner side surface, and the plurality of guide members (1222) are distributed along the extension direction of the fixed plate (1221), and the rotation axis of the guide members (1222) extends along the vertical direction. The guide members (1222) are used to guide the transport frame (20) to move into the material transfer area.

5. The feeding device according to claim 3, characterized in that: The second limiting portion (12) further comprises: A stopper (124) is movably arranged on the fixing seat (121), the stopper (124) being close to an end of the fixing seat (121) away from the first limiting portion (11), the stopper (124) having a stop position for rotating to the material transfer area and an escape position for rotating out of the material transfer area, the stopper (124) being used for stopping the transport rack (20) located in the material transfer area.

6. The feeding device according to claim 5, characterized in that: The stopper (124) comprises a connecting section (1241) and a stopping section (1242) which are arranged opposite to each other. The stopper (124) is rotatably arranged on the fixing seat (121). The rotating shaft of the stopper (124) is located at the connection between the connecting section (1241) and the stopping section (1242), and the rotating shaft extends in the vertical direction. The second limiting portion (12) further comprises: The second driving member (125) is arranged on the fixing seat (121), and the second driving member (125) is drivingly connected to the connecting section (1241) so as to drive the stopping section (1242) to rotate between the stopping position and the avoiding position through the rotating shaft.

7. The feeding device according to claim 1, characterized in that: The transport frame (20) comprises: A bottom frame (21), wherein the bottom of the bottom frame (21) has a roller (22); A plurality of placement racks (23) are stacked on the base frame (21), and the placement racks (23) are used to place materials.

8. The feeding device according to claim 7, characterized in that: A plug-in structure is provided between the base frame (21) and the placement rack (23), and between two adjacent placement racks (23); the base frame (21) is detachably connected to the placement rack (23) via the plug-in structure, and two adjacent placement racks (23) are detachably connected via the plug-in structure.

9. The feeding device according to claim 8, characterized in that: The plug-in structure comprises: A plug-in protrusion (2301), wherein the plug-in protrusion (2301) is arranged on the top of the base frame (21) and the top of the placement frame (23); The plug-in hole (2302) is arranged at the bottom of the placement rack (23), and the plug-in hole (2302) is adapted to the position of the plug-in protrusion (2301). The plug-in protrusion (2301) on the bottom frame (21) is plug-connected with the plug-in hole (2302) of the placement rack (23). Between two adjacent placement racks (23), the plug-in protrusion (2301) of the placement rack (23) at the lower layer is plug-connected with the placement rack (23) at the upper layer.

10. The feeding device according to claim 7, characterized in that: The placement rack (23) comprises: A bottom frame (231), wherein a limiting groove (2311) is provided on the bottom frame (231), wherein the limiting groove (2311) is used to place materials, and the size of the limiting groove (2311) is adjustable; A plurality of support rods (232), wherein the plurality of support rods (232) are distributed at intervals along the circumference of the bottom frame (231), and the support rods (232) extend in a vertical direction; A limiting frame (233) is arranged on the support rod (232), the limiting frame (233) and the bottom frame (231) are spaced apart in the vertical direction, and the limiting frame (233) cooperates with the bottom frame (231) to limit the position of the material in the vertical direction.

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