Automatic feeding device

Abstract

The utility model provides an automatic feeding device which comprises a material carrying device used for carrying materials; the limiting device and the material carrying device are arranged in a spaced mode to form a reserved space, gas is stored in the material located in the reserved space, and the limiting device is used for limiting gas movement so that the material passing through the space can be released from the internal adsorption state under the action of the gas; the expansion device is used for making contact with the material with the internal adsorption removed and driving the material at the contact position of the expansion device and the material to move in the first direction so that the material can be in an expansion state; the carrying device is used for stretching into the expanded materials, extracting the materials and driving the materials to move in the second direction; and the cutting device is used for cutting the materials after the carrying device drives the materials to move in the second direction. According to the feeding device, materials of hollow structures can be fed, the automation degree is high, and the feeding efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of automated assembly equipment, and in particular to an automatic loading device. Background Art

[0002] The loading device is one of the indispensable and important equipment in modern industrial automation production lines. This device is mainly used to automatically transport materials from the storage location to the designated location on the production line for subsequent processing.

[0003] At present, the feeding of materials with hollow structures mainly relies on manual operation, which leads to high operating error rate and low production efficiency. The automatic feeding devices on the market are only applicable to materials with ordinary structures, and cannot be used for feeding materials with hollow structures that need to be mounted on the next processing device. Utility Model Content

[0004] In order to overcome the defects of the above-mentioned prior art, the present application provides an automatic feeding device, and the specific technical solution is as follows:

[0005] An automatic feeding device, comprising:

[0006] A material loading device, used for loading materials;

[0007] A limiting device, wherein the limiting device is spaced apart from the material loading device to form a reserved space, wherein gas is stored inside the material located in the reserved space, and the limiting device is used to limit the movement of the gas so that the material passing through the reserved space is released from an internal adsorption state under the action of the gas;

[0008] An expansion device, used to contact the material that has been released from the internal adsorption state, and drive the material at the contact point to move along the first direction, so that the material is in an expanded state;

[0009] A handling device, used for extending into the material in the expanded state and extracting the material, and driving the material to move along the second direction;

[0010] The cutting device is used to cut the material after the transport device drives the material to move along the second direction.

[0011] In a specific embodiment, it also includes:

[0012] A sensing device, located between the limiting device and the expanding device, the sensing device is used to detect the state of the material and output a signal when the transport device drives the material to move along the second direction;

[0013] The conveying device is located between the limiting device and the sensing device, and is used to drive the material to move according to the signal output by the sensing device.

[0014] In a specific embodiment, the sensing device comprises:

[0015] A reference object, which is placed on the material and causes the material to bend, and is used to generate displacement driven by the material when the material is driven by the transport device to move along the second direction;

[0016] The sensing element is directed toward the reference object, and is used for detecting the position of the reference object and outputting a signal when the reference object is displaced.

[0017] In a specific embodiment, the conveying device includes a first driving member and at least one rolling member, the rolling member is in contact with the material, and the first driving member is configured to drive the rolling member to rotate according to a signal output by the sensing device to drive the material to move.

[0018] In a specific embodiment, the horizontal height of the loading device is H1, the horizontal height of the limiting device is H2, and the horizontal height of the expansion device is H3, wherein H1<H2, H3≤H2;

[0019] The side and upper part of the limiting device are in contact with the material, and the limiting device is used to make the material located on both sides of the limiting device form an angle to limit the movement of the gas.

[0020] In a specific embodiment, the expansion device includes a second driving member, a vacuum generator and at least one suction member;

[0021] The adsorption member is close to the cutting device and is located on a side of the cutting device away from the transporting device. The adsorption member is configured to be driven by the second driving member to reciprocate along the first direction to approach and move away from a portion of the material.

[0022] The vacuum generator is configured to cause the adsorbent to generate negative pressure so as to adsorb the material at a contact point between the adsorbent and the material when the adsorbent contacts the material.

[0023] In a specific embodiment, the transport device includes a pick-and-place assembly and a moving assembly, the moving assembly is connected to the pick-and-place assembly, the pick-and-place assembly is used to extend into the expanded material and extract the material, and the moving assembly is used to drive the pick-and-place assembly that extracts the material to move.

[0024] In a specific embodiment, the pick-and-place assembly includes a third driving member and two extraction members, the two extraction members are arranged at an interval, and the extraction members are configured to be driven by the third driving member to reduce and increase the interval between the two extraction members.

[0025] In a specific embodiment, the moving assembly includes a fourth driving member and a transmission member, the pick-and-place assembly is disposed on the transmission member, and the transmission member is configured to be driven by the fourth driving member to drive the pick-and-place assembly to move along the second direction.

[0026] In a specific embodiment, the cutting device includes a fifth driving member and a cutting knife, and the cutting knife is configured to be driven by the fifth driving member to move along a third direction to cut the material.

[0027] This application has at least the following beneficial effects:

[0028] An automatic loading device of the present application includes: a loading device for carrying materials; a limiting device, which is spaced apart from the loading device to form a reserved space, wherein gas is stored inside the materials in the reserved space, and the limiting device is used to limit the movement of the gas so that the materials passing through the space can release the internal adsorption state under the action of the gas; an expansion device, which is used to contact the materials that have released the internal adsorption state, and drive the materials at the contact point of the two to move along the first direction, so that the materials are in an expanded state; a conveying device, which is used to extend into the materials in the expanded state and extract the materials, and drive the materials to move along the second direction; and a cutting device, which is used to cut the materials after the conveying device drives the materials to move along the second direction.

[0029] The present application can load materials with a hollow structure through the cooperation of a loading device, a limiting device, an expansion device, a conveying device and a cutting device, and has a high degree of automation and improved loading efficiency.

[0030] The present application stores gas inside the material located in the reserved space and sets a limiter to limit the movement of gas, so that the material segments that enter the reserved space successively due to the movement of the material can release their internal adsorption state under the action of gas, avoiding the material being tightly adsorbed together, reducing the difficulty of operating the subsequent expansion device, so that the expansion device can easily expand the material without releasing the internal adsorption state of the material, thereby improving the feeding efficiency. The coordination of the gas and the limiter allows the material to change from the original compact state to the loose state, making it easier for the expansion device to drive a part of the material to move, avoiding the material from being broken or deformed during the movement, and ensuring the integrity of the material.

[0031] In addition, the present application expands the material through the expansion device, thereby increasing the internal space of the material, making it easier for the transport device to quickly and accurately reach into the material and extract the material, thereby increasing the success rate of the transport device in extracting the material and thereby improving the loading efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of 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 creative work.

[0033] Figure 1 The structure diagram of the automatic feeding device provided in this embodiment Figure 1 ;

[0034] Figure 2 The structure diagram of the automatic feeding device provided in this embodiment Figure 2 ;

[0035] Figure 3 The structure diagram of the automatic feeding device provided in this embodiment Figure 3 ;

[0036] Figure 4 for Figure 3 A partial enlarged view of the middle A area;

[0037] Figure 5 The structure diagram of the automatic feeding device provided in this embodiment Figure 4 ;

[0038] Figure 6 The structure diagram of the automatic feeding device provided in this embodiment Figure 5 ;

[0039] Figure 7 for Figure 6 A partial enlarged view of area B.

[0040] Reference numerals:

[0041] 1-loading device; 2-limiting device; 3-expansion device; 4-handling device; 5-cutting device; 6-sensing device; 7-conveying device; 8-pressing device; 9-material; 10-frame; 21-limiting member; 31-adsorption member; 41-pick-and-place assembly; 42-moving assembly; 51-fifth driving member; 52-cutting knife; 61-reference object; 62-sensing member; 63-housing; 71-first driving member; 72-rolling member; 81-sixth driving member; 82-pressing member; 211-arc surface; 411-third driving member; 412-extraction member; 421-fourth driving member; 422-transmission member; X1-first direction; X2-second direction; X3-third direction. DETAILED DESCRIPTION

[0042] Hereinafter, various embodiments of the present application will be described more fully. The present application may have various embodiments, and adjustments and changes may be made therein. However, it should be understood that there is no intention to limit the various embodiments of the present application to the specific embodiments disclosed herein, but the present application should be understood to cover all adjustments, equivalents and / or alternatives within the spirit and scope of the various embodiments of the present application.

[0043] Hereinafter, the term "include" or "may include" used in various embodiments of the present application indicates the presence of a disclosed function, operation, or element, and does not limit the addition of one or more functions, operations, or elements. In addition, as used in various embodiments of the present application, the terms "include", "have", and their cognates are intended only to indicate a specific feature, number, step, operation, element, component, or combination of the foregoing, and should not be understood as first excluding the presence of one or more other features, numbers, steps, operations, elements, components, or a combination of the foregoing or the possibility of adding one or more features, numbers, steps, operations, elements, components, or a combination of the foregoing.

[0044] It should be noted that in this application, unless otherwise clearly specified and defined, the terms "installation", "connection", "fixation" and the like 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 an indirect connection through an intermediate medium; 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.

[0045] In the present application, a person of ordinary skill in the art should understand that the terms indicating orientation or positional relationship herein are based on the orientation or positional relationship shown in the accompanying drawings, and 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 should not be understood as a limitation on the present application.

[0046] like Figures 1 to 7 As shown, this embodiment provides an automatic feeding device, comprising:

[0047] A material loading device 1, used for loading material 9;

[0048] The limiting device 2 is spaced apart from the material loading device 1 to form a reserved space. The material 9 in the reserved space has gas stored inside. The limiting device 2 is used to limit the movement of the gas so that the material 9 passing through the reserved space is released from the internal adsorption state under the action of the gas.

[0049] The expansion device 3 is used to contact the material 9 that has released its internal adsorption state, and drive the material 9 at the contact point to move along the first direction X1, so that the material 9 is in an expanded state;

[0050] The handling device 4 is used to extend into the material 9 in the expanded state and extract the material 9, and drive the material 9 to move along the second direction X2;

[0051] The cutting device 5 is used to cut the material 9 after the transport device 4 drives the material 9 to move along the second direction X2.

[0052] Specifically, the automatic loading device provided in this embodiment can be applied to loading a film material with a hollow structure, but is not limited thereto. The film material is located on the loading device 1 and the interior is in an adsorption state. Specifically, the adsorption state refers to an electrostatic adsorption state.

[0053] This embodiment can load materials with a hollow structure through the cooperation of the loading device 1, the limiting device 2, the expansion device 3, the conveying device 4 and the cutting device 5, and has a high degree of automation and improved loading efficiency.

[0054] In this embodiment, gas is stored inside the material 9 located in the reserved space, and a limit device 2 is provided to restrict the movement of gas, so that the material segments that successively enter the reserved space due to the movement of the material 9 can release their internal adsorption state under the action of the gas, thereby preventing the material 9 from being tightly adsorbed together, reducing the difficulty of operating the subsequent expansion device 3, so that the expansion device 3 can easily expand the material 9 without releasing the internal adsorption state of the material 9, thereby improving the feeding efficiency.

[0055] And through the cooperation of gas and limiting device 2, the material 9 is transformed from the original compact state (when the material 9 is in an adsorbed state) to a loose state (when the material 9 is released from the adsorption state), which makes it easier for the expansion device 3 to drive part of the material 9 to move, avoiding the material 9 from breaking or deforming during the movement, thereby ensuring the integrity of the material 9.

[0056] In this embodiment, the material 9 is expanded by the expansion device 3, thereby increasing the internal space of the material 9, making it easier for the conveying device 4 to quickly and accurately reach into the material 9 and extract the material 9, thereby improving the success rate of the conveying device 4 in extracting the material 9 and further improving the loading efficiency.

[0057] In one embodiment, the material 9 is wound on the material loading device 1 , and the material 9 can rotate relative to the material loading device 1 under the action of an external force to release the material 9 .

[0058] like Figure 1As shown, in one embodiment, the automatic loading device further comprises a frame 10, and the loading device 1, the limiting device 2, the expansion device 3 and the handling device 4 are all arranged on the frame 10. In one embodiment, the loading device 1 is rotatably arranged on the frame 10, so that the material 9 can rotate relative to the frame 10 under the action of an external force to release the material 9.

[0059] In one embodiment, the automatic feeding device further includes an inflation device, which is close to the limiting device 2 and is used to inject gas into the interior of the material 9 . The material 9 after being injected with gas by the inflation device is installed on the limiting device 2 .

[0060] like Figure 2 As shown, in one embodiment, the horizontal height of the loading device 1 is H1, the horizontal height of the limiting device 2 is H2, and the horizontal height of the expansion device 3 is H3, wherein H1<H2, H3≤H2; the side and top of the limiting device 2 are in contact with the material 9, and the limiting device 2 is used to make the materials located on both sides of the limiting device 2 form an angle to limit the movement of the gas.

[0061] The included angle between the materials 9 on both sides of the limiting device 2 is between 30° and 170°.

[0062] In this embodiment, the horizontal height of the loading device 1 is lower than the horizontal height of the limiting device 2, and the horizontal height of the expansion device 3 is lower than or equal to the horizontal height of the limiting device 2, so that the material 9 located between the loading device 1 and the limiting device 2 forms an angle with the material 9 located between the expansion device 3 and the limiting device 2, so that the limiting device 2 can limit the gas position through a simple structure to avoid gas movement, with a simple structure and low production cost.

[0063] like Figure 3 As shown, in one embodiment, the limiting device 2 includes a limiting member 21, which is disposed on the frame 10. The limiting member 21 is in a strip shape, and the length of the limiting member 21 is greater than the width of the material 9, and the side and upper portion of the limiting member 21 are in contact with the material 9. The side and upper portion of the limiting member 21 both have an outwardly protruding arc surface 211, and the arc surface 211 is in contact with the material 9.

[0064] In this embodiment, an outwardly protruding arc surface 211 is provided on the limiting member 21 to reduce the friction generated when the material 9 contacts the limiting member 21, thereby avoiding the material 9 from being broken or deformed due to the limiting member 21 during movement, thereby ensuring the integrity of the material.

[0065] like Figure 2 As shown, in one embodiment, the automatic feeding device further includes:

[0066] The sensing device 6 is located between the limiting device 2 and the expanding device 3, and is used to detect the state of the material 9 and output a signal when the conveying device 4 drives the material 9 to move along the second direction X2;

[0067] The conveying device 7 is located between the limiting device 2 and the sensing device 6 , and is used to drive the material 9 to move according to the signal output by the sensing device 6 .

[0068] In this embodiment, through the cooperation of the sensing device 6 and the conveying device 7, when the handling device 4 drives the material 9 to move along the second direction X2, the sensing device 6 detects that the material 9 has moved and then outputs a signal, and the conveying device 7 starts to assist in conveying the material 9 between the limiting device 2 and the sensing device 6 according to the signal output by the sensing device 6; when the handling device 4 drives the material 9 to move along the second direction X2, the sensing device 6 detects that the material 9 stops moving and then outputs a signal again, and the conveying device 7 stops conveying according to the signal output by the sensing device 6.

[0069] In this embodiment, the conveying device 7 assists the handling device 4 in driving the movement of the material 9, so that the conveying device 7 and the handling device 4 respectively transport the material 9 in different areas, with a high degree of automation. At the same time, the handling pressure of the handling device 4 is reduced, and excessive local pressure at the connection end between the material 9 and the handling device 4 is avoided, thereby avoiding the rupture and deformation of the material 9.

[0070] like Figure 5 As shown, in one embodiment, the sensing device 6 comprises:

[0071] A reference object 61, which is placed on the material 9 and causes the material 9 to bend, and is used to generate displacement driven by the material 9 when the transport device 4 drives the material 9 to move along the second direction X2;

[0072] The sensing element 62 faces the reference object 61 and is used for detecting the position of the reference object 61 and outputting a signal when the reference object 61 is displaced.

[0073] In this embodiment, the position of the reference object 61 is detected by the sensing element 62 through the cooperation between the reference object 61 and the sensing element 62, and the state of the material 9 is obtained based on the position of the reference object 61. In this embodiment, there is no need to set up a high-precision sensing device to detect the state of the material 9, so that the cost of the sensing device 6 is low and the economic benefit is high.

[0074] In one embodiment, the sensing device 6 includes a housing 63, and the reference object 61 is movably disposed in the housing 63 and placed on the material 9, so that the material 9 contacts the lower part of the reference object 61, and the reference object 61 bends the material 9 due to its own gravity. The sensing element 62 is also disposed on the housing 63 and corresponds to the reference object 61. When the transport device 4 drives the material 9 to move along the second direction X2, the material section located at the lower part of the reference object 61 moves upward or sideways upward together with the reference object 61 under the drive of the material section close to the transport device 4, so that the reference object 61 is displaced. After the sensing element 62 detects the movement of the reference object 61, it outputs a signal, so that the conveying device 7 assists the transport device 4 in driving the movement of the material 9.

[0075] In one embodiment, the sensing element 62 is a position sensor, but is not limited thereto.

[0076] like Figure 3 As shown, in one embodiment, the conveying device 7 includes a first driving member 71 and at least one rolling member 72, the rolling member 72 is in contact with the material 9, and the first driving member 71 is configured to drive the rolling member 72 to rotate according to the signal output by the sensing device 6 to drive the material 9 to move.

[0077] In one embodiment, the number of at least one rolling member 72 is two, one of which is located above the other rolling member, and the material 9 is located between the two rolling members. The two rolling members are in contact with the upper and lower sides of the material 9 respectively, and drive the material 9 to move under the drive of the first driving member 71.

[0078] In one embodiment, the first driving member 71 includes one of a motor, a cylinder or a hydraulic cylinder, but is not limited thereto.

[0079] like Figure 3 As shown, in one embodiment, the automatic feeding device further includes a material pressing device 8, which is located between the limiting device 2 and the expansion device 3 and contacts the material whose internal adsorption state is released, and is used to apply a certain pressure to the material whose internal adsorption state is released, so as to make the surface of the material whose internal adsorption state is released flat, thereby facilitating the subsequent expansion device 3 to contact a part of the material 9. In one embodiment, the material pressing device 8 is located between the sensing device 6 and the expansion device 3.

[0080] In one embodiment, the pressing device 8 includes a sixth driving member 81 and a pressing member 82 , and the pressing member 82 is configured to be driven by the sixth driving member 81 to approach and move away from the material 9 .

[0081] In one embodiment, the sixth driving member 71 includes one of a motor, a cylinder or a hydraulic cylinder, but is not limited thereto.

[0082] like Figure 6 and Figure 7 As shown, in one embodiment, the expansion device 3 includes a second driving member (not shown in the figure), a vacuum generator (not shown in the figure) and at least one adsorption member 31; the adsorption member 31 is configured to be driven by the second driving member to reciprocate along the first direction X1 to approach and move away from one part of the material 9; the vacuum generator is configured to cause the adsorption member 31 to generate negative pressure so as to adsorb the material at the contact point between the adsorption member 31 and the material 9 when the adsorption member 31 contacts the material 9.

[0083] In this embodiment, the vacuum generator and the adsorption member 31 are used to enable the expansion device 3 to act on a part of the material alone, and with the cooperation of the second driving member, the adsorption member 31 can drive the adsorbed part of the material to move in the first direction X1, so that the interior of the material is in an expanded state, thereby increasing the internal space of the material and facilitating the insertion of the conveying device 4.

[0084] In one embodiment, the number of at least one adsorption component 31 is more than two, and the more than two adsorption components 31 are respectively located above and below the material 9. The adsorption component 31 located above the material 9 drives the corresponding adsorbed part of the material to move in the first direction X1, and the adsorption component 31 located below the material 9 drives the corresponding adsorbed part of the material to move in the opposite direction of the first direction X1.

[0085] In one embodiment, the adsorption member 31 is close to the cutting device 5 and is located on the side of the cutting device 5 away from the transporting device 4, so that the adsorption member 31 adsorbs the cut end of the material, and then under the action of the second driving member, the open end of the material is in an expanded state, further increasing the convenience of the transporting device 4 to extend into the interior of the material 9.

[0086] In one embodiment, the second driving member includes one of a motor, a cylinder or a hydraulic cylinder, but is not limited thereto.

[0087] like Figure 3 and Figure 4 As shown, in one embodiment, the handling device 4 includes a pick-and-place assembly 41 and a moving assembly 42. The moving assembly 42 is connected to the pick-and-place assembly 41. The pick-and-place assembly 41 is used to extend into the expanded material and extract the material. The moving assembly 42 is used to drive the pick-and-place assembly 41 to move to extract the material.

[0088] In this embodiment, the pick-and-place assembly 41 extends into the material in the expanded state to extract the material 9, so that the contact area between the pick-and-place assembly 41 and the material 9 is increased, thereby increasing the success rate of extracting the material. At the same time, the pick-and-place assembly 41 extends into the material in the expanded state to extract the material 9, so that the material 9 is transferred by the moving assembly in the expanded state or in a state close to the expanded state and sleeved on the carrier of the next process.

[0089] like Figure 3 and Figure 4As shown, in one embodiment, the pick-and-place assembly 41 includes a third driving member 411 and two extracting members 412 . The two extracting members 412 are spaced apart, and the extracting members 412 are configured to be driven by the third driving member 411 to reduce and increase the spacing between the two extracting members 412 .

[0090] In this embodiment, the distance between the two extraction members 412 is adjustable through the third driving member 411, so that the two extraction members 412 can be gathered and extended into the expanded material, and then the distance between the two extraction members 412 is increased through the third driving member 411 to adapt to the internal space of the material 9, so that the material 9 is stably placed on the two extraction members 412, thereby increasing the success rate of extracting the material. At the same time, the pick-and-place assembly 41 can adjust the distance between the two extraction members 412 according to the size of the material 9 to adapt to materials 9 of different sizes, so that the application range is wide.

[0091] In one embodiment, the pick-and-place assembly 41 includes a third driving member 411, and the third driving member 411 is respectively connected to the two extraction members 412. In another embodiment, the pick-and-place assembly 41 may also include two third driving members 411, and the two third driving members 411 correspond to the two extraction members 412 one by one, and the third driving member 411 drives the extraction members 412 corresponding thereto.

[0092] In one embodiment, the third driving member 411 includes one of a motor, a cylinder or a hydraulic cylinder, but is not limited thereto.

[0093] like Figure 3 and Figure 4 As shown, in one embodiment, the moving assembly 42 includes a fourth driving member 421 and a transmission member 422, the pick-and-place assembly 41 is disposed on the transmission member 422, and the transmission member 422 is configured to be driven by the fourth driving member 421 to drive the pick-and-place assembly 41 to move along the second direction X2.

[0094] In one embodiment, the fourth driving member 421 includes one of a motor, a cylinder or a hydraulic cylinder, but is not limited thereto.

[0095] like Figure 6 and Figure 7 As shown, in one embodiment, the cutting device 5 includes a fifth driving member 51 and a cutting knife 52 , and the cutting knife 52 is configured to be driven by the fifth driving member 51 to move along the third direction X3 to cut the material 9 .

[0096] In one embodiment, the fifth driving member 51 includes one of a motor, a cylinder or a hydraulic cylinder, but is not limited thereto.

[0097] In one embodiment, the first direction X1 , the second direction X2 , and the third direction X3 are perpendicular to each other, but the present invention is not limited thereto.

[0098] Those skilled in the art will appreciate that the accompanying drawings are merely schematic diagrams of a preferred implementation scenario, and the modules or processes in the accompanying drawings are not necessarily required for implementing the present application.

[0099] Those skilled in the art will appreciate that the modules in the device in the implementation scenario can be distributed in the device in the implementation scenario according to the implementation scenario description, or can be changed accordingly and located in one or more devices different from the implementation scenario. The modules in the above implementation scenario can be combined into one module, or can be further split into multiple sub-modules.

[0100] The above application serial numbers are for description only and do not represent the advantages or disadvantages of the implementation scenarios.

[0101] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An automatic feeding device, characterized in that: include: A material loading device, used for loading materials; A limiting device is arranged at a distance from the material loading device to form a reserved space, wherein gas is stored inside the material located in the reserved space, and the limiting device is used to limit the movement of the gas so that the material passing through the reserved space releases the internal adsorption state under the action of the gas; An expansion device, used to contact the material that has been released from the internal adsorption state, and drive the material at the contact point to move along the first direction, so that the material is in an expanded state; A handling device, used for extending into the material in the expanded state and extracting the material, and driving the material to move along the second direction; The cutting device is used to cut the material after the transport device drives the material to move along the second direction.

2. The automatic feeding device according to claim 1, characterized in that: Also includes: A sensing device, located between the limiting device and the expanding device, the sensing device is used to detect the state of the material and output a signal when the transport device drives the material to move along the second direction; The conveying device is located between the limiting device and the sensing device, and is used to drive the material to move according to the signal output by the sensing device.

3. The automatic feeding device according to claim 2, characterized in that: The sensing device comprises: A reference object, which is placed on the material and causes the material to bend, and is used to generate displacement driven by the material when the material is driven by the transport device to move along the second direction; The sensing element is directed toward the reference object, and is used for detecting the position of the reference object and outputting a signal when the reference object is displaced.

4. The automatic feeding device according to claim 2, characterized in that: The conveying device includes a first driving member and at least one rolling member, the rolling member is in contact with the material, and the first driving member is configured to drive the rolling member to rotate according to a signal output by the sensing device to drive the material to move.

5. The automatic feeding device according to claim 1, characterized in that: The horizontal height of the material loading device is H1, the horizontal height of the position limiting device is H2, and the horizontal height of the expansion device is H3, wherein H1<H2, H3≤H2; The side and upper part of the limiting device are in contact with the material, and the limiting device is used to make the material located on both sides of the limiting device form an angle to limit the movement of the gas.

6. The automatic feeding device according to claim 1, characterized in that: The expansion device includes a second driving member, a vacuum generator and at least one adsorption member; The adsorption member is close to the cutting device and is located on a side of the cutting device away from the transporting device. The adsorption member is configured to be driven by the second driving member to reciprocate along the first direction to approach and move away from the material; The vacuum generator is configured to cause the adsorbent to generate negative pressure so as to adsorb the material at a contact point between the adsorbent and the material when the adsorbent contacts the material.

7. The automatic feeding device according to claim 1, characterized in that: The transport device includes a pick-and-place assembly and a moving assembly, wherein the moving assembly is connected to the pick-and-place assembly, the pick-and-place assembly is used to extend into the expanded material and extract the material, and the moving assembly is used to drive the pick-and-place assembly for extracting the material to move.

8. The automatic feeding device according to claim 7, characterized in that: The pick-and-place assembly includes a third driving member and two extracting members, the two extracting members are arranged at an interval, and the extracting members are configured to be driven by the third driving member to reduce and increase the interval between the two extracting members.

9. The automatic feeding device according to claim 7, characterized in that: The moving assembly includes a fourth driving member and a transmission member, the pick-and-place assembly is arranged on the transmission member, and the transmission member is configured to be driven by the fourth driving member to drive the pick-and-place assembly to move along the second direction.

10. The automatic feeding device according to claim 1, characterized in that: The cutting device includes a fifth driving member and a cutting knife. The cutting knife is configured to be driven by the fifth driving member to move along a third direction to cut the material.

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