Paper sheet feeding device

Abstract

The invention relates to a paper sheet feeding device which comprises a grabbing assembly and a paper bending assembly, the grabbing assembly comprises a mechanical arm and a finger clamping suite, the finger clamping suite is connected to the movable free end of the mechanical arm, and the finger clamping suite is used for clamping paper sheets; the paper bending assembly comprises a discharging plate and a plurality of extrusion components located on the periphery of the discharging plate, the discharging plate is located in the moving range of the grabbing assembly, the paper bending assembly further comprises a cushion block protruding out of the surface of the discharging plate, and the extrusion components can move in the direction close to and away from the cushion block so as to drive paper sheets above the discharging plate to be bent and deformed towards the cushion block. According to the scheme, when the fan-shaped paper sheets of the paper cups are fed, the paper sheets are subjected to automatic pre-bending treatment, the problems that the manual dependence of feeding of the fan-shaped paper sheets is high, and the production efficiency is limited are solved, and the blank of current automatic paper sheet feeding is filled up.

Description

Technical Field

[0001] This application relates to the technical field of paper cup production, and particularly to a paper sheet feeding device. Background Art

[0002] In the paper cup manufacturing process, the feeding of fan-shaped paper sheets is a key link affecting production efficiency and product quality. In the prior art, since the fan-shaped paper sheets need to be pre-bent before entering the forming process to eliminate the stress rebound in their natural state and avoid problems such as corner folding, warping, or loose edge fitting during subsequent cup body forming.

[0003] The current industry generally adopts a manual-assisted feeding mode: operators need to manually grasp the fan-shaped paper sheets, physically bend the sheets based on experience judgment, and then place them on the feeding station one by one. The manual feeding of each sheet and the manual bending operation consume a large amount of man-hours, which not only increases the labor cost but also limits the production speed to the speed of manual operation, making it difficult to meet the requirements of large-scale production. Moreover, manual feeding is also prone to material waste. For example, during the manual operation, due to improper operation or mistakes, the paper cups may be damaged or misaligned, thereby affecting the forming quality of the paper cups and increasing the rejection rate.

[0004] Therefore, there is an urgent need to develop an automated device that integrates pre-forming and can achieve high-speed and stable feeding to break through the technical barriers of strong manual dependence and limited production efficiency in the prior art. Summary of the Invention

[0005] Based on this, in view of the problems of strong manual dependence and limited production efficiency in the feeding of fan-shaped paper sheets during the paper cup production process, it is necessary to provide a paper sheet feeding device.

[0006] A paper sheet feeding device, the paper sheet feeding device includes a grasping component and a paper bending component. The grasping component includes a robotic arm and a finger clip set. The finger clip set is connected to the movable free end of the robotic arm, and the finger clip set is used for clamping the paper sheet. The paper bending component includes a feeding plate and a plurality of pressing components located on the outer periphery of the feeding plate. The feeding plate is located within the moving range of the grasping component. The paper bending component further includes a cushion block protruding from the surface of the feeding plate. The pressing components can move in a direction close to and away from the cushion block to drive the paper sheet above the feeding plate to bend and deform towards the cushion block.

[0007] In one embodiment, the paper bending component further includes a limiting post. The limiting post is located on the outer periphery of the feeding plate. The end face of the limiting post facing the cushion block is recessed with a limiting groove. The limiting groove is used for limiting the edge of the paper sheet located above the feeding plate. Each limiting post is arranged to be synchronously movable with the pressing component in a direction close to and away from the cushion block.

[0008] In one embodiment, the limiting post has an abutting surface that defines the limiting groove and is located on the side away from the material discharging plate, and the abutting surface is inclined with an upward slope in the direction away from the material discharging plate.

[0009] In one embodiment, the cushion block is made of a flexible and elastic material.

[0010] In one embodiment, the paper sheet feeding device further includes a paper stacking assembly, the paper stacking assembly includes a storage cavity for storing paper sheets, and the storage cavity is within the moving range of the grasping assembly.

[0011] In one embodiment, the paper stacking assembly includes a bottom plate, the bottom plate is rotatably arranged around its own axis, and a plurality of spaced storage cavities are provided on the upper surface of the bottom plate, and at least one of the storage cavities is within the moving range of the grasping assembly.

[0012] In one embodiment, the paper stacking assembly includes a backing plate for defining the bottom surface of the storage cavity, the backing plate corresponds to the storage cavity one by one, and the backing plate is inclined with a downward slope in the direction towards the axis of the bottom plate.

[0013] In one embodiment, the finger clip set includes an even number of clamping fingers, each clamping finger has another clamping finger arranged oppositely, and the two oppositely arranged clamping fingers can move towards and away from each other to clamp and release the paper sheet; and / or, each clamping finger is telescopically arranged to approach the paper sheet to be clamped.

[0014] In one embodiment, the finger clip set further includes a top block, and the top block is used to push the paper sheet located in the storage cavity so as to form a gap convenient for the clamping finger to insert between the paper sheet and other paper sheets located below the paper sheet.

[0015] In one embodiment, the paper sheet feeding device further includes a waiting material assembly, the waiting material assembly includes a placing plate for placing paper sheets and limiting guide posts located on the outer periphery of the placing plate, the placing plate is within the moving range of the grasping assembly, the number of the limiting guide posts is multiple and they are spaced apart and distributed on the outer periphery of the placing plate to jointly enclose a temporary storage cavity for placing paper sheets and having an open top end.

[0016] In the paper sheet feeding device provided in the above solution, by setting a grasping component capable of picking up and placing the paper sheet, and a paper bending component capable of pre-bending the paper sheet, the telescopic extrusion component in the bending component is set, and a cushion block with a fixed position is set, so as to drive the edge of the paper sheet to move towards the cushion block by the movement of the extrusion component, so that the paper sheet is deformed because the middle is supported by the cushion block and the edge moves downward under the action of the extrusion component, realizing automatic pre-bending treatment of the paper sheet during the feeding of the fan-shaped paper sheet for the paper cup, eliminating the stress rebound of the paper sheet in the natural state, avoiding problems such as corner folding and warping in the subsequent paper cup forming process, overcoming the problems of strong manual dependence and limited production efficiency in the feeding of the fan-shaped paper sheet in the current paper cup production process, and filling the blank of automatic feeding of the current fan-shaped paper sheet. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 FIG. is a schematic structural diagram of a paper sheet feeding device in an embodiment of the present application.

[0018] Figure 2 is Figure 1 a schematic structural diagram of the middle finger clip kit.

[0019] Figure 3 is Figure 2 a schematic diagram of the middle finger clip kit picking up a paper sheet.

[0020] Figure 4 is Figure 1 a schematic structural diagram of the middle paper bending component.

[0021] Figure 5 is Figure 4 a top view of the middle paper bending component.

[0022] Figure 6 is Figure 1 a schematic structural diagram of the stacking paper component in.

[0023] Figure 7 is Figure 6 a sectional view of the stacking paper component in.

[0024] Description of the reference numerals:

[0025] 100. Paper sheet feeding device; 110. Gripping component; 111. Robot arm; 112. Finger clip kit; 1121. Clamping finger; 1122. Top block; 1123. Slide rail; 1124. Slide driving member; 1125. Telescopic driving member; 120. Paper bending component; 121. Feeding plate; 122. Limit post; 1221. Limit groove; 1222. Contact surface; 1223. Support surface; 123. Spacer block; 124. Extrusion component; 1241. Support platform; 1242. Extrusion column; 12421. Column body; 12422. Connection part; 1243. Arc-shaped corner; 130. Paper stacking component; 131. Storage cavity; 132. Bottom plate; 133. Padding plate; 134. Rotation driving member; 135. Transmission component; 136. Support component; 1361. Bearing seat; 1362. Support column; 1363. Support plate; 137. Rotation shaft; 138. Frame component; 1381. Support pillar; 1382. Stop block; 139. Position detection component; 140. Waiting material component; 141. Placing plate; 142. Limit guide post; 143. Temporary storage cavity; 150. Base; 200. Paper sheet. Detailed implementation manners

[0026] To make the above objects, features, and advantages of the present application more obvious and understandable, the following will describe the detailed implementation manners of the present application with reference to the accompanying drawings. Many specific details are set forth in the following description to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0027] In the description of the present application, it should be understood that if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0028] In addition, if the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0029] In this application, unless otherwise clearly specified and defined, if terms such as "installed", "connected", "joined", "fixed", etc. appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0030] In this application, unless otherwise clearly specified and defined, if there is a description such as a first feature "on" or "under" a second feature, its meaning can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over", and "on top of" the second feature can mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath", and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature has a lower horizontal height than the second feature.

[0031] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If so, the terms "vertical", "horizontal", "up", "down", "left", "right", and similar expressions used in this application are only for illustrative purposes and do not represent the only implementation manner.

[0032] Refer to Figure 1 , Figure 1 FIG. shows a schematic structural diagram of a paper sheet feeding device 100 in an embodiment of this application. The paper sheet feeding device 100 provided in an embodiment of this application is applied in the production of paper cups and is located upstream of a paper cup forming machine.

[0033] As Figure 1As shown in the figure, the paper sheet feeding device 100 includes a grasping assembly 110 and a paper bending assembly 120. The grasping assembly 110 is used for picking and placing the paper sheet 200, and the paper bending assembly 120 is used for pre-bending the paper sheet 200 to eliminate the stress rebound in its natural state and avoid problems such as corner folding, warping, or loose edge fitting during the subsequent cup forming. In this embodiment, the paper sheet feeding device 100 further includes a base 150, and the grasping assembly 110 and the paper bending assembly 120 are both connected to the base 150 and located above the base 150.

[0034] As Figure 1 shown, the grasping assembly 110 includes a robotic arm 111 and a finger clip set 112. Among them, the robotic arm 111 includes a plurality of connecting rods and rotating joints connecting two adjacent connecting rods. Each connecting rod is connected through a plurality of rotating joints, and each joint corresponds to one degree of freedom. The rotating joints enable the connecting rods to rotate around the axis to achieve the direction adjustment of the grasping position.

[0035] Combined with Figure 2 and Figure 3 shown, Figure 2 The figure shows a partial structural schematic diagram of the grasping assembly 110 in the paper sheet feeding device 100 in an embodiment of the present application. The finger clip set 112 is connected to the movable free end of the robotic arm 111. The finger clip set 112 is used for clamping the paper sheet 200 to pick and place the paper sheet 200 through the finger clip set 112, so as to cooperate with the robotic arm 111 to achieve the position movement of the paper sheet 200.

[0036] As Figure 2 and Figure 3 shown, in one embodiment, the finger clip set 112 includes an even number of clamping fingers 1121, and each clamping finger 1121 has another clamping finger 1121 arranged oppositely. In this embodiment, the number of clamping fingers 1121 is 4, but it is only used as an example and not as a limitation.

[0037] As Figure 2 and Figure 3 shown, two oppositely arranged clamping fingers 1121 can move towards and away from each other to clamp and release the paper sheet 200. When the two clamping fingers 1121 move towards each other, they can clamp the paper sheet 200 as shown in Figure 3 shown, and when the two clamping fingers 1121 move away from each other, they release the paper sheet 200. In this embodiment, the clamping fingers 1121 are arranged oppositely in the up-down direction, and the finger clip set 112 further includes a slide rail 1123. The two oppositely arranged clamping fingers 1121 are slidably connected to the same slide rail 1123 to move towards and away from each other.

[0038] As Figure 2 and Figure 3As shown, the finger clip kit 112 further includes a sliding drive member 1124. The clamping finger 1121 is drivingly connected to the sliding drive member 1124. The sliding drive member 1124 is used to drive the clamping finger 1121 to move to complete the actions of clamping and releasing the paper sheet 200.

[0039] As Figure 2 and Figure 3 As shown, in one embodiment, the finger clip kit 112 further includes a top block 1122. The top block 1122 is used to push the paper sheet 200 located in the storage cavity 131, so as to form a gap between the paper sheet 200 and other paper sheets 200 located below the paper sheet 200 that is convenient for the clamping finger 1121 to insert, so that the clamping finger 1121 can more conveniently pick up the paper sheet 200. Exemplarily, the top block 1122 can approach and move away from the paper sheet 200 relative to the robotic arm 111, so as to push the paper sheet 200 located in the storage cavity 131 by approaching the top block 1122, so as to form a gap between the paper sheet 200 and other paper sheets 200 located below the paper sheet 200 that is convenient for the clamping finger 1121 to insert.

[0040] In some embodiments, each clamping finger 1121 is telescopically arranged to approach the paper sheet 200 to be picked up, so as to facilitate the action of the clamping finger 1121 picking up the paper sheet 200.

[0041] As Figure 2 and Figure 3 As shown, the finger clip kit 112 further includes a telescopic drive member 1125. The clamping finger 1121 is drivingly connected to the telescopic drive member 1125. The telescopic drive member 1125 is used to drive the clamping finger 1121 to move to approach the paper sheet 200 for convenient picking up.

[0042] As Figure 4 and Figure 5 As shown, the paper bending assembly 120 includes a paper feeding plate 121 and a plurality of pressing members 124 located on the outer periphery of the paper feeding plate 121. The paper feeding plate 121 is located within the moving range of the grasping assembly 110. The paper feeding plate 121 and the pressing members 124 together enclose a space for placing the paper sheet 200 above the paper feeding plate 121, so that the grasping assembly 110 can place the paper sheet 200 above the paper feeding plate 121.

[0043] The paper bending assembly 120 further includes a cushion block 123 protruding from the surface of the feeding plate 121. The cushion block 123 is placed on the surface of the feeding plate 121. When the gripping assembly 110 places the paper sheet 200, the paper sheet 200 is located above the feeding plate 121 and the cushion block 123. The pressing member 124 can move in a direction approaching and departing from the cushion block 123 to drive the paper sheet 200 above the feeding plate 121 to bend and deform towards the cushion block 123, so that it is deformed due to being supported by the cushion block 123 in the middle and the edges being bent under the action of the pressing member 124. Furthermore, when feeding the fan-shaped paper sheet 200 of the paper cup, the paper sheet 200 is pre-bent, thereby eliminating the stress rebound of the paper sheet 200 in the natural state and avoiding problems such as corner folding and warping in the subsequent paper cup forming process.

[0044] As Figure 4 and Figure 5 shown, in this embodiment, the number of the pressing members 124 is multiple, and at least one pressing member 124 is located on one side of the paper sheet 200, and at least another pressing member 124 is located on the other side of the paper sheet 200, so that when the pressing members 124 on both sides of the paper sheet 200 move relatively, the paper sheet 200 can be pressed, thereby realizing the bending of the paper sheet towards the direction where the cushion block 123 is located and realizing the pre-bending treatment of the paper sheet 200.

[0045] As Figure 4 and Figure 5 shown, in one embodiment, the pressing member 124 includes a pressing column 1242 perpendicular to the plane where the feeding plate 121 is located and a supporting platform 1241 connected to the pressing column 1242. The supporting platform 1241 protrudes from the pressing column 1242 in the direction where the pressing column 1242 faces the cushion block 123, so as to play a certain supporting role for the paper sheet 200 when the pressing column moves towards the cushion block 123 and presses the paper sheet 200 to deform.

[0046] As Figure 4 and Figure 5 shown, in one embodiment, the pressing member 124 further includes an arc-shaped corner 1243. The arc-shaped corner 1243 is located at the top of the part of the pressing column 1242 for pressing the paper sheet 200. The arc-shaped corner 1243 has an arc-shaped structure, so that when the pressing force of the pressing member 124 on the paper sheet 200 is too large, the paper sheet 200 can break away from the force applied by the pressing member 124 along the arc-shaped corner, thereby preventing the paper sheet 200 from being damaged due to the excessive pressing force of the pressing member 124 on the paper sheet 200.

[0047] As Figure 4 and Figure 5As shown, in one embodiment, the extrusion post 1242 includes a post body 12421 and a connecting portion 12422 connected to the post body 12421. Optionally, the connecting portion 12422 and the post body 12421 are detachable split structures. The post body 12421 is used to connect to other components to cause the extrusion post 1242 to move toward the cushion block 123 so as to extrude the paper sheet 200 to deform. The portion of the extrusion post 1242 for extruding the paper sheet 200 is a part of the post body 12421 and a part of the connecting portion 12422. And the connecting portion 12422 and the support platform 1241, and the connecting portion 12422 and the arc-shaped corner 1243 are of an integral structure, so as to facilitate the installation and processing of the extrusion component 124.

[0048] In one embodiment, the paper bending assembly 120 further includes a limit post 122, and the limit post 122 is located on the outer periphery of the material feeding plate 121. And in this embodiment, the number of the limit posts 122 is multiple, and the multiple limit posts 122 are spaced apart and distributed on the outer periphery of the material feeding plate 121. A limit groove 1221 is recessed in the end surface of the limit post 122 facing the cushion block 123. The limit groove 1221 is used to define the edge of the paper sheet 200 located on the surface of the material feeding plate 121. Each limit post 122 is arranged to be synchronously movable with the extrusion component 124 in the directions close to and away from the cushion block 123, so as to limit the edge of the paper sheet 200 through the limit groove 1221 and prevent the deformation direction of the paper sheet 200 from being uncontrolled or the paper sheet 200 from spreading out and detaching when the paper sheet 200 is being extruded.

[0049] As Figure 4 and Figure 5 shown, in this embodiment, the number of the limit posts 122 and the extrusion components 124 is the same and they are arranged in one-to-one correspondence, and the limit posts 122 and the extrusion components 124 are connected to the same mounting plate to move synchronously.

[0050] In one embodiment, the cushion block 123 is made of a flexible and elastic material, which can be rubber, latex, silicone rubber, etc., without limitation.

[0051] As Figure 4 shown, in one embodiment, the limit post 122 has an abutting surface 1222 that defines the limit groove 1221 and is located on the side away from the material feeding plate 121. When the extrusion component 124 moves toward the cushion block 123 to press down the edge of the paper sheet 200, the abutting surface 1222 contacts and abuts against the edge of the paper sheet 200. The abutting surface 1222 is inclined with an upward slope in the direction away from the material feeding plate 121, so as to prevent the edge of the paper sheet 200 from slipping out of the limit groove 1221 and escaping from the downward pressure of the limit post 122 when the extrusion component 124 presses down the paper sheet 200.

[0052] As Figure 4As shown, in one embodiment, the limit post 122 further has a support surface 1223 that defines the limit groove 1221. The support surface 1223 is located on the side close to the paper feeding plate 121 and is disposed away from the paper feeding plate 121, and is used to support the paper sheet 200 placed in the limit groove 1221. In this embodiment, the support surface 1223 is a plane parallel to the paper feeding plate 121, and the support surfaces 1223 of all the limit posts 122 are in the same plane. In this embodiment, the support surface 1223 is also in the same plane as the support platform 1241 of the pressing member 124, so as to facilitate the support of the paper sheet 200.

[0053] As Figure 1 , Figure 6 and Figure 7 As shown, in one embodiment, the paper sheet feeding device 100 further includes a paper stacking assembly 130 for storing the paper sheets 200. The paper stacking assembly 130 includes a storage cavity 131 for storing the paper sheets 200. The storage cavity 131 is located within the moving range of the grasping assembly 110, so that the grasping assembly 110 can clamp the paper sheets 200 from the storage cavity 131.

[0054] As Figure 6 and Figure 7 As shown, in one embodiment, the paper stacking assembly 130 includes a bottom plate 132 that is rotatably disposed about its own axis. The upper surface of the bottom plate 132 is provided with a plurality of spaced storage cavities 131, and the adjacent storage cavities 131 are arranged without interference. The plurality of storage cavities 131 can increase the number of paper sheets 200 that the paper stacking assembly 130 can store, and avoid the need for frequent feeding due to a small stock. At least one storage cavity 131 is located within the moving range of the grasping assembly 110. Since the bottom plate 132 is rotatably disposed, after the grasping assembly 110 clamps the paper sheet 200 from the storage cavity 131 within its moving range, the bottom plate 132 rotates to make the next storage cavity 131 within the moving range of the grasping assembly 110, and so on, so that each storage cavity 131 can be within the moving range of the grasping assembly 110 through the rotation of the bottom plate 132, avoiding the need for the grasping assembly 110 to adjust multiple positions corresponding to multiple storage cavities 131.

[0055] As Figure 6 and Figure 7 As shown, in one embodiment, the paper stacking assembly 130 includes a backing plate 133 for defining the bottom surface of the storage cavity 131. The backing plate 133 corresponds to the storage cavity 131 one by one, and the backing plate 133 is provided with a downward slope in the direction towards the axis of the bottom plate 132, so that the paper sheet 200 inclines towards the central position of the bottom plate 132, avoiding the paper sheet 200 falling out of the storage cavity 131 under the action of centrifugal force when the bottom plate 132 rotates.

[0056] As Figure 6 and Figure 7As shown, in one embodiment, the paper stacking assembly 130 further includes a rotating driving member 134, a rotating shaft 137 and a transmission assembly 135, and the bottom plate 132 is connected to the rotating shaft 137 and rotates with the rotating shaft 137 around the axis of the rotating shaft 137. The rotating driving member 134 is used to drive the rotating shaft 137 and the bottom plate 132 connected to the rotating shaft 137 to rotate, and the transmission assembly 135 is transmission-connected between the rotating driving member 134 and the rotating shaft 137 for transmission.

[0057] like Figure 6 and Figure 7 As shown, in one embodiment, the paper stacking assembly 130 further includes a support assembly 136, which includes a support plate 1363 located above the rotating drive member 134, and the position of the support plate 1363 is fixed, and there is no force contact with the rotating drive member 134. The support assembly 136 also includes a support column 1362, and the support column 1362 is connected to the end surface of the support plate 1363 facing the direction of the bottom plate 132. And the support assembly 136 also includes a bearing seat 1361, the bearing seat 1361 is located at the outer periphery of one end of the connecting transmission assembly 135 of the rotating shaft 137, and the rotating shaft 137 is rotatably connected to the bearing seat 1361 through a bearing, and the bearing seat 1361 is connected to one end of the support column 1362 away from the support plate 1363, so that the weight of the bottom plate 132, the paper sheet 200 located above the bottom plate 132, and the rotating shaft 137 is supported by the bearing seat 1361, the support column 1362 and the support plate 1363, and will not be transmitted to the rotating drive member 134.

[0058] like Figure 6 and Figure 7 As shown, in one embodiment, the paper stacking assembly 130 further includes a frame assembly 138, which is connected to the top of the bottom plate 132 and is used to enclose the storage cavity 131 and to separate adjacent storage cavities 131. The frame assembly 138 includes a support column 1381 arranged perpendicular to the bottom plate 132, and the plurality of support columns 1381 and the bottom plate 132 together enclose the storage cavity 131, and the support columns 1381 are also used to separate adjacent storage cavities 131 in the vertical direction.

[0059] In this embodiment, a plurality of pillars 1381 may be disposed between adjacent storage chambers 131. For example, the pillars 1381 may be distributed in a triangular shape. The skeleton assembly 138 further includes a stopper 1382, which is connected to the plurality of pillars 1381 between two adjacent storage chambers 131 to stabilize the pillars 1381.

[0060] like Figure 6 and Figure 7As shown, in one embodiment, the paper stacking assembly 130 further includes a position detector 139 for confirming the rotational position of the bottom plate 132, so that the paper sheets 200 in different storage cavities 131 can all be picked up. When the paper sheets 200 in a storage cavity 131 are completely picked up, the bottom plate 132 rotates to enable the paper sheets in the next storage cavity 131 to be picked up.

[0061] As Figure 1 shown, in one embodiment, the paper feeding device 100 further includes a waiting material assembly 140. The waiting material assembly 140 is located in the downstream part of the paper sheet 200 feeding, and is used for storing the paper sheets 200 for the next process, and these paper sheets 200 have been pre-bent by the paper bending assembly 120.

[0062] As Figure 1 shown, the waiting material assembly 140 includes a placement plate 141 for placing the paper sheets 200 and limit guide posts 142 located on the outer periphery of the placement plate 141. The placement plate 141 is within the moving range of the grasping assembly 110, so that the grasping assembly 110 can place the paper sheets 200 pre-bent by the paper bending assembly 120 above the placement plate 141. As Figure 1 shown, the number of the limit guide posts 142 is multiple and they are spaced apart on the outer periphery of the placement plate 141 to jointly enclose a temporary storage cavity 143 with an open top for placing the paper sheets 200. The limit guide posts 142 are used to limit the movement of the paper sheets 200 in the temporary storage cavity 143, facilitating the movement of the paper sheets 200 to the next process by other components.

[0063] As Figure 1 shown, in one embodiment, one end of each limit guide post 142 away from the placement plate 141 is inclined, so that the opening of the temporary storage cavity 143 is in a gradually expanding shape, facilitating the entry of the paper sheets 200 into the temporary storage cavity 143 for use in the next process.

[0064] In the paper sheet feeding device 100 provided in the above solution, by setting a grasping component 110 capable of picking up and placing the paper sheet 200, and a paper bending component 120 capable of pre-bending the paper sheet 200, the squeezing component 124 movably arranged in the bending component is set, and the cushion block 123 with a fixed position is set, so that the edge of the paper sheet 200 is driven to move towards the cushion block 123 by the movement of the squeezing component 124, and thus it is deformed because the middle is supported by the cushion block 123 and the edge moves downward under the action of the squeezing component 124. When feeding the fan-shaped paper sheet 200 of the paper cup, the paper sheet 200 is automatically pre-bent, the stress rebound in the natural state of the paper sheet 200 is eliminated, and problems such as corner folding and warping are avoided in the subsequent paper cup forming process. It overcomes the problems of strong manual dependence and limited production efficiency in the current paper cup production process for the feeding of the fan-shaped paper sheet 200, and fills the blank of the automatic feeding of the current fan-shaped paper sheet 200.

[0065] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0066] The above-described embodiments only represent several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A paper sheet feeding device, characterized in that: The paper sheet feeding device comprises: A gripping assembly, comprising a mechanical arm and a finger gripper kit, wherein the finger gripper kit is connected to a movable free end of the mechanical arm, and the finger gripper kit is used to grip a paper sheet; and The paper bending assembly includes a feed plate and a plurality of extrusion components located on the periphery of the feed plate, wherein the feed plate is located within the movable range of the grabbing assembly, and the paper bending assembly also includes a pad block protruding from the surface of the feed plate, and the extrusion components can move in directions approaching and away from the pad block to drive the paper sheet above the feed plate to bend and deform toward the pad block.

2. The paper sheet feeding device according to claim 1, characterized in that: The paper bending assembly also includes a limit column, which is located at the outer periphery of the feed plate. The limit column is provided with a limit groove on the end surface facing the cushion block. The limit groove is used to limit the edge of the paper sheet above the feed plate. Each of the limit columns is arranged to be synchronously movable with the extrusion component in the direction of approaching and moving away from the cushion block.

3. The paper sheet feeding device according to claim 2, characterized in that: The limiting column has an abutting surface which defines the limiting groove and is located at a side away from the material placing plate, and the abutting surface is inclined at an upward slope in a direction away from the material placing plate.

4. The paper sheet feeding device according to claim 1, characterized in that: The cushion block is made of a flexible and elastic material.

5. The paper sheet feeding device according to claim 1, characterized in that: The paper sheet feeding device further comprises a paper stacking assembly, wherein the paper stacking assembly comprises a storage cavity for storing paper sheets, and the storage cavity is located within the movable range of the grabbing assembly.

6. The paper sheet feeding device according to claim 5, characterized in that: The paper stacking assembly comprises a bottom plate, which is rotatable around its own axis. The upper surface of the bottom plate is provided with a plurality of storage cavities spaced apart from each other, and at least one storage cavity is located within the movable range of the grabbing assembly.

7. The paper sheet feeding device according to claim 6, characterized in that: The paper stacking assembly includes a pad for defining the bottom surface of the storage cavity, the pad corresponds to the storage cavity one by one, and the pad is arranged with a downward slope in the axial direction toward the bottom plate.

8. The paper sheet feeding device according to claim 5, characterized in that: The finger clamp kit includes an even number of clamping fingers, each of which has another clamping finger arranged opposite to it, and the two clamping fingers arranged opposite to each other can move toward and away from each other to clamp and release the paper sheet; And / or, each of the clamping fingers can be telescopically arranged to approach the paper sheet to be clamped.

9. The paper sheet feeding device according to claim 8, characterized in that: The finger clamp kit also includes a top block, which is used to push the paper sheet in the storage cavity to form a gap between the paper sheet and other paper sheets below the paper sheet for easy insertion of the clamping fingers.

10. The paper sheet feeding device according to claim 1, characterized in that: The paper feeding device also includes a material waiting component, which includes a placement plate for placing paper sheets and limiting guide pillars located at the periphery of the placement plate. The placement plate is located within the movable range of the grabbing component. The limiting guide pillars are multiple and are distributed at intervals at the periphery of the placement plate to form a temporary storage cavity with an open top for placing paper sheets together with the placement plate.

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