Tapered paper sleeve forming device for ice-cream cone packaging

Abstract

The invention relates to a conical paper sleeve forming device for ice-cream cone packaging, and belongs to the technical field of paper distribution and conveying. The paper distributing device comprises a paper distributing mechanism and a gluing forming mechanism, the paper distributing mechanism comprises a lifting assembly, limiting assemblies, an air blowing assembly, a suction assembly and a conveying assembly, the lifting assembly supports a paper pile and drives the paper pile to move upwards, the height of paper on the uppermost layer of the paper pile is not changed, the two limiting assemblies are arranged on the two sides of the lifting assembly respectively, and the lifting assembly is connected with the limiting assemblies. When the lifting assembly drives the paper pile to move upwards, the limiting assembly horizontally moves in a reciprocating mode so that the paper pile can be horizontally limited through the limiting assembly, the blowing assembly is arranged on one side of the limiting assembly and used for blowing air to the side face of the paper pile so that paper on the uppermost layer of the paper pile can be separated from the paper pile, the suction assembly sucks the paper on the uppermost layer of the paper pile to the conveying assembly, and a single piece of paper is conveyed through the conveying assembly. And the gluing forming mechanism is used for gluing the paper and forming the paper into a conical paper sleeve. The conical paper sleeve forming device has the effect of improving the problem of poor paper distribution reliability in the conical paper sleeve forming process of the ice-cream cone.

Description

Technical Field

[0001] The present application relates to the technical field of paper distribution and transportation, and in particular to a conical paper sleeve forming device for ice cream cone packaging. Background Art

[0002] An ice cream cone usually has ice cream or other desserts filled in a conical cookie shell. To maintain the freshness and hygiene of the ice cream cone, a conical paper sleeve is generally used to wrap it on the outside. Currently, in order to achieve efficient forming of the conical paper sleeve for ice cream cone packaging, a paper sleeve forming machine is generally used.

[0003] The existing paper sleeve forming machine includes a conveying component for conveying a stack of multiple sheets of paper, a single - sheet paper distribution component for separating a single sheet of paper from the stack of paper, a gluing component for applying glue to the single sheet of paper, a forming component for forming a conical paper sleeve by rolling the single sheet of paper, and an output component for outputting the conical paper sleeve, which can process a stack of multiple fan - shaped papers into a conical paper sleeve composed of single - layer papers. Among them, in the related art, the single - sheet paper distribution component usually uses a friction roller to separate the top - most single sheet of paper from the stack of paper, so as to achieve the separation of the papers one by one and convey the single - layer papers.

[0004] However, when the friction roller distributes the stacked multi - layer papers, since the papers are relatively thin, it is easy for adjacent papers to stick together. When the friction roller drives by friction, it is easy to drive multiple sheets of paper to move simultaneously, which affects the processing quality of subsequent processes. It is also easy to drive multiple sheets of paper below to shift and become scattered, resulting in a change in the horizontal position of the stack of papers and a decrease in the positioning accuracy, thereby increasing the difficulty of paper distribution and making the reliability of the distribution and transportation of single - layer papers poor.

[0005] In the above - mentioned related art, there is a defect that the reliability of paper distribution in the process of forming the conical paper sleeve of the ice cream cone is poor. Summary of the Invention

[0006] In order to improve the problem of poor reliability of paper distribution in the process of forming the conical paper sleeve of the ice cream cone, the present application provides a conical paper sleeve forming device for ice cream cone packaging.

[0007] The conical paper sleeve forming device for ice cream cone packaging provided by the present application adopts the following technical solutions: A conical paper sleeve forming device for ice cream cone packaging, comprising: a paper separating mechanism, the paper separating mechanism includes a lifting component, a limiting component, a blowing component, a sucking component and a conveying component. A stack of several superimposed papers forms a paper pile. The lifting component is used to support the paper pile and drive the paper pile to move upward, so that the height of the topmost paper in the paper pile remains unchanged. There are two groups of the limiting component and the blowing component. The two groups of the limiting component are respectively arranged on both sides of the lifting component. The lifting component is connected to the limiting component, so that when the lifting component drives the paper pile to move upward, the limiting component moves horizontally back and forth. The limiting component can abut against the side surface of the paper pile to horizontally limit the paper pile through the limiting component. The blowing component is arranged on the side where the limiting component can abut against the paper pile. The blowing component is used to blow air against the side surface of the paper pile, so that the topmost paper in the paper pile is separated from the paper pile. The limiting component drives the blowing component to move, so that the horizontal distance between the blowing component and the side surface of the paper pile changes periodically. The conveying component is arranged on one side of the lifting component. The sucking component is arranged at the input end of the conveying component. The sucking component is used to suck the topmost paper in the paper pile to the conveying component to transport single sheets of paper through the conveying component; a glue coating and forming mechanism, the glue coating and forming mechanism is matched with the output end of the conveying component. The glue coating and forming mechanism is used to coat glue on the paper and form it into a conical paper sleeve.

[0008] By adopting the above technical solution, the lifting assembly supports the paper stack and adjusts its position as the height of the paper stack itself changes, so that the height of the topmost paper in the paper stack remains unchanged, ensuring that the topmost paper in the paper stack is always at an appropriate height to be separated; the limiting assembly moves horizontally back and forth as the lifting height of the paper stack by the lifting assembly changes to horizontally limit the paper stack, reducing the risk of the remaining papers in the paper stack being scattered due to the separation of the topmost paper. By improving the positioning accuracy of the papers in the paper stack, the difficulty of paper distribution is reduced. The suction assembly sucks and feeds the separated single sheets of paper into the conveying assembly, enabling the single sheets of paper at the topmost layer of the paper stack to be reliably conveyed to the conveying assembly to ensure the continuous supply of paper; the conveying assembly conveys the single-layer papers to the glue coating and forming mechanism. The glue coating and forming mechanism cooperates closely with the conveying assembly to accurately apply glue to each sheet of paper and finally form it into a conical paper sleeve; since the blowing assembly is arranged on the limiting assembly, the blowing assembly can be driven by the limiting assembly to move horizontally back and forth, and thus the horizontal distance between the blowing assembly and the paper stack changes periodically. When the distance between the blowing assembly and the paper stack is far, the blown area of the paper stack is large and the blowing effect is dispersed, which helps to reduce the adhesion between multiple papers in the paper stack; when the distance between the blowing assembly and the paper stack is close, the blown area of the paper stack is small and the blowing effect is concentrated, further reducing the adhesiveness of the topmost paper in the paper stack, so that the topmost paper in the paper stack is reliably separated. Combined with the suction force of the suction assembly, the topmost paper in the paper stack can be reliably distributed, reducing the problem of multiple layers of papers being simultaneously sucked out due to paper adhesion. This device can efficiently and stably distribute and convey the stacked multiple sheets of paper one by one to the glue coating and forming mechanism, improving the production efficiency and significantly enhancing the stability of product quality at the same time.

[0009] Optionally, the paper separating mechanism includes a supporting assembly, and both the lifting assembly and the limiting assembly are arranged on the supporting assembly. There are two groups of the lifting assemblies. Each lifting assembly includes a lifting driving member, a lead screw, a nut, and a lifting frame. The lifting driving member is arranged on the supporting assembly, and the output end of the lifting driving member is in transmission connection with one end of the lead screw. The nut is screwed on the lead screw. The two groups of lifting assemblies are arranged at intervals perpendicular to the paper conveying direction. The nuts of the two groups of lifting assemblies are connected by a connecting member. The lifting frame is connected to the two nuts, and the lifting frame is used to support the paper stack.

[0010] By adopting the above technical solutions, the supporting component provides support for the lifting component and the limiting component. The two sets of lifting components are arranged at intervals perpendicular to the paper conveying direction, which helps to keep the paper stack stable during the rising process, avoid tilting or skewing phenomena, thus ensuring the flatness of the paper stack, enabling each piece of paper to be accurately separated and fed into the subsequent process, and improving the paper separation accuracy; the design of the lead screw, nut and lifting frame in the lifting component makes the entire lifting process more stable and reliable, reduces the risk of paper damage caused by mechanical vibration, and enhances the structural stability; the double-lifting component design not only improves the load-bearing capacity of the paper stack, but also ensures the continuity and consistency of the paper through synchronous actions, improving the production efficiency; at the same time, the way of screw drive helps to improve the moving accuracy and is more suitable for the vertical movement of thinner papers.

[0011] Optionally, the limiting component includes a support member, a fixing member, an elastic member, a pushing member and a sliding member. The support member is connected to the support component, the fixing member is connected to the support member, the sliding member is arranged on the side of the fixing member away from the support member, the sliding member is slidably connected to the fixing member, the two ends of the elastic member are respectively connected to the fixing member and the sliding member, the pushing member is arranged between the fixing member and the sliding member, and the pushing member can push the sliding member to move horizontally away from the fixing member, so that the sliding member abuts against the side surface of the paper stack, and the elastic member is used to make the sliding member move horizontally back to the direction close to the fixing member to reset.

[0012] By adopting the above technical solutions, the sliding member can move horizontally under the action of the pushing member, so that the sliding member can abut against the paper stack, thereby realizing the horizontal limitation of the paper stack, ensuring the neatness of the paper stack, improving the positioning accuracy of the topmost paper of the paper stack, and reducing the problem of the decrease in separation reliability caused by paper offset; after the pushing member releases the pushing action on the sliding member, the elastic member enables the sliding member to quickly reset away from the side surface of the paper stack after completing the sorting action of the paper stack, so as to keep the paper stack neat by intermittently pushing the paper stack.

[0013] Optionally, the limiting component is correspondingly arranged with the lifting component. The pushing member includes a cam, a rotating shaft, a first sprocket, a chain and a second sprocket. The rotating shaft is rotatably connected to the fixing member, the first sprocket and the cam are both connected to the rotating shaft, the second sprocket is connected to the lead screw, and the chain is drivingly connected to the first sprocket and the second sprocket, so that the rotation of the lead screw can drive the rotation of the cam, and the outer peripheral surface of the cam abuts against the sliding member, so that the rotation of the cam can push the sliding member to move.

[0014] By adopting the above technical solution, the limiting component and the lifting component are correspondingly arranged, so that a lifting component can drive a limiting component to move, reducing the load of the lifting component and improving reliability; the cooperative action of the cam, the rotating shaft, the first sprocket, the chain and the second sprocket enables the rotation of the lead screw to effectively drive the rotation of the cam, and then intermittently push the sliding part to move horizontally away from the fixed part through the rotation of the cam, realizing the intermittent pushing of the side of the paper stack, so as to be able to sort the paper stack every time a single sheet of paper is distributed, which helps to improve the reliability of single-sheet paper distribution.

[0015] Optionally, the air blowing component is offset to the side where the sliding part can abut against the paper stack, so that the air blowing component is arranged at one end of the sliding part close to the conveying component. A groove is arranged on the side of the sliding part away from the fixed part, and the air blowing component is arranged in the groove. The horizontal depth of the groove is greater than the thickness of the air blowing component, so that the air blowing component is recessed in the sliding part.

[0016] By adopting the above technical solution, the air blowing component is offset to one end of the sliding part close to the conveying component, which can blow air at the edge of the topmost sheet of the paper stack close to the conveying component, effectively reducing the phenomenon of paper adhesion and improving the paper separation efficiency; at the same time, the groove on the sliding part forms a channel at the front end of the air blowing direction of the air blowing component, thus reducing the risk of turbulent flow formation in the air blowing direction when the horizontal distance between the air blowing component and the paper stack is far, and improving the concentration of the air blowing effect when the horizontal distance between the air blowing component and the paper stack is close. Furthermore, at one end of the paper stack close to the conveying component, a vertical gap is formed between the topmost sheet of the paper stack and the paper stack below, so that the topmost sheet of the paper stack can be reliably distributed.

[0017] Optionally, the paper separation mechanism further includes an adjustment component. The support member includes a rotating part, a support part and a limiting part. The bottom of the support part is connected to the support component. The rotating part is rotatably connected to the support part. The adjustment component is arranged on the support component and is used for adjusting the angle of the rotating part. The limiting part is connected to one end of the rotating part, and the limiting part can be relatively positioned with the support part through a fastener to fix the angle of the rotating part.

[0018] By adopting the above technical solution, the adjustment component can flexibly adjust the angle of the rotating part, so as to adapt to papers of different sizes, improving the applicable range and flexibility of the equipment. The relative positioning design between the limiting part and the support part enables the rotating part to be stably maintained after adjusting the angle, avoiding the change of the angle of the rotating part due to vibration or other factors during use and affecting the paper separation effect.

[0019] Optionally, the adjusting assembly includes a telescopic driving member and a pushing member. The fixed end of the telescopic driving member is provided on the supporting assembly. The telescopic end of the telescopic driving member is connected to the first end of the pushing member. The second end of the pushing member is used to push the rotating portion away from one end of the limiting portion.

[0020] By adopting the above technical solution, the telescopic driving member provides stable power output, enabling the pushing member to push one end of the rotating portion away from the limiting portion, thereby adjusting the posture of the sliding member, and further optimizing the effect of paper distribution.

[0021] Optionally, the supporting portion is provided with a rotating rod, the rotating rod is rotatably connected to the rotating portion, and a torsion spring is provided between the rotating rod and the rotating portion, so that the rotating portion can rotate and reset.

[0022] By adopting the above technical solution, the design of providing a torsion spring between the rotating rod and the rotating portion enables the rotating portion to automatically reset after the external force is removed, reducing the equipment maintenance cost.

[0023] Optionally, the conveying assembly includes a conveying platform, a conveying driving member, a connecting shaft and conveying rollers. Along the paper conveying direction, the conveying platform is arranged at the rear end of the lifting assembly. The conveying driving member is arranged on the conveying platform. The output end of the conveying driving member is in transmission connection with the connecting shaft. The conveying rollers are connected to the connecting shaft. The suction assembly cooperates with the conveying rollers to drive the paper to be conveyed onto the conveying platform.

[0024] By adopting the above technical solution, the conveying efficiency and stability of the paper are improved. Specifically, the conveying platform is arranged at the rear end of the lifting assembly, ensuring the smooth transportation of the paper from the paper stack to the gluing and forming mechanism after being sucked out; the conveying driving member is in transmission connection with the connecting shaft, enabling the conveying rollers on the connecting shaft to operate stably and reliably, so that the paper can be clamped and conveyed between the conveying rollers and the conveying platform, and the transportation of a single layer of paper is realized through the cooperation of the suction assembly, the conveying rollers and the conveying platform, ensuring the continuous conveying of the paper.

[0025] Optionally, the paper separating mechanism further includes two groups of pressing-down assemblies. There are two groups of conveying rollers. Along the paper conveying direction, the two groups of conveying rollers are arranged on both sides of the suction assembly. The two groups of pressing-down assemblies are arranged on both sides of the suction assembly. The pressing-down assemblies are arranged in one-to-one correspondence with the conveying rollers. The pressing-down assemblies are arranged between the conveying rollers and the suction assembly. The pressing-down assembly includes a vertical telescopic member and a pressing-down member. The fixed end of the vertical telescopic member is connected to the supporting assembly. The pressing-down member is connected to the telescopic end of the vertical telescopic member. The vertical telescopic member drives the pressing-down member to move vertically, so as to selectively limit the vertical moving distance of the paper through the pressing-down member.

[0026] By adopting the above technical solution, the vertical telescopic member drives the pressing member to move vertically to adjust the vertical position of the pressing member, so that the pressing member can reliably limit the vertical movement distance of the paper, prevent the paper from shifting or overlapping due to excessive vertical freedom, and thus ensure that the paper smoothly enters the subsequent process; the pressing assemblies are arranged in one-to-one correspondence with the conveying rollers, and the pressing assemblies are arranged between the suction assembly and the conveying rollers, which can, while vertically limiting the paper, move the pressing assemblies away from the suction assembly, reducing the influence on the blowing and separating effect of the topmost paper due to vertical limiting.

[0027] In summary, the present application includes at least one of the following beneficial technical effects: 1. Through the coordinated action of the lifting assembly, the limiting assembly, the blowing assembly and the suction assembly in the paper separating mechanism, multiple stacked papers can be separated one by one, and the distribution of single-layer papers can be realized in combination with the conveying of the conveying assembly, reducing the problem of paper adhesion caused only by the friction roller method and improving the reliability of paper distribution; 2. The linkage design of the limiting assembly and the blowing assembly ensures that while the paper is blown up, its horizontal position is accurately controlled, preventing the paper from affecting the subsequent process due to horizontal displacement and improving the positioning accuracy and stability of the entire device; 3. The effective cooperation between the conveying assembly and the glue coating and forming mechanism realizes the integrated operation from paper separation to the forming of the conical paper sleeve, reduces manual intervention, reduces the pollution risk, and meets the requirements of large-scale production. Description of the Drawings

[0028] Figure 1 is a schematic diagram of the paper separating mechanism of the conical paper sleeve forming device for ice cream packaging in the embodiment of the present application.

[0029] Figure 2 is a schematic diagram of the paper separating mechanism in the embodiment of the present application with the conveying assembly and the suction assembly hidden.

[0030] Figure 3 is a schematic diagram of the cooperation between the lead screw and the limiting assembly in the embodiment of the present application.

[0031] Figure 4 is a top view of the cooperation between the lifting assembly, the limiting assembly and the adjusting assembly in the embodiment of the present application.

[0032] Description of the Reference Numerals: 1. Lifting assembly; 11. Lifting driving member; 12. Lead screw; 13. Nut; 14. Lifting frame; 15. Connecting member; 2. Limiting assembly; 21. Support member; 211. Rotating part; 212. Supporting part; 213. Limiting part; 214. Rotating rod; 22. Fixing member; 23. Elastic member; 24. Pushing member; 241. Cam; 242. Rotating shaft; 243. First sprocket; 244. Chain; 245. Second sprocket; 25. Sliding member; 251. Groove; 26. Fastening member; 3. Blowing assembly; 4. Suction assembly; 41. Suction nozzle; 5. Conveying assembly; 51. Conveyor platform; 52. Conveying driving member; 53. Connecting shaft; 54. Conveyor roller; 55. Baffle; 6. Support assembly; 7. Adjusting assembly; 71. Telescopic driving member; 72. Pushing member; 8. Pressing-down assembly; 81. Vertical telescopic member; 82. Pressing-down member. Detailed implementation manners

[0033] The following will further describe the present application in detail with reference to the Figure 1 - attached Figure 4 drawings. In this embodiment, unless otherwise clearly specified, "connection", "connection" and "fixation" are understood in a broad sense, including fixed connection, detachable connection, connection to form an integral structure, mechanical connection, electrical connection, direct connection, indirect connection through an intermediary, internal connection and interaction between two components, etc., which can be understood according to specific circumstances.

[0034] In the present application, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include the first and second features not being in direct contact but being in contact through other features therebetween. Moreover, in the description of this embodiment, the orientation or positional relationship terms such as "above", "below", "left", "right", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application. Without contrary description, the orientation terms such as "inside, outside" used in the present application refer to the outline of the corresponding component itself.

[0035] As Figure 1 , Figure 2 and Figure 3 shown, the embodiment of the present application discloses a conical paper sleeve forming device for ice cream packaging (hereinafter simply referred to as "device"). The device includes a paper separating mechanism and a glue coating and forming mechanism, which are used to realize the distribution and conveying of a single layer of paper, and further coat and form the single layer of paper with glue.

[0036] The sheet separating mechanism includes a lifting component 1, a limiting component 2, a blowing component 3, a sucking component 4 and a conveying component 5. A stack of several superimposed sheets forms a paper stack. The lifting component 1 is used to support the paper stack and drive the paper stack to move upward, so as to adjust the position as the height of the paper stack changes itself, so that the height of the topmost sheet of the paper stack remains unchanged, so that the topmost sheet of the paper stack is always at a suitable height to be separated.

[0037] As Figure 1 , Figure 2 and Figure 3 shown, there are two sets of the limiting component 2 and the blowing component 3 respectively and they correspond one by one. The two sets of the limiting component 2 are respectively arranged on both sides of the lifting component 1 to horizontally limit the side surface of the paper stack. The lifting component 1 is connected to the limiting component 2, so that when the lifting component 1 drives the paper stack to move upward, the limiting component 2 moves horizontally back and forth. The limiting component 2 can be in contact with the side surface of the paper stack to horizontally limit the paper stack through the limiting component 2. Along the conveying direction of the sheets, the conveying component 5 is arranged at the front end of the lifting component 1, and the sucking component 4 is arranged at the input end of the conveying component 5. The sucking component 4 is used to suck the topmost sheet of the paper stack to the conveying component 5, and convey single sheets of paper to the gluing and forming mechanism through the conveying component 5.

[0038] As Figure 1 , Figure 2 and Figure 3 shown, the limiting component 2 moves horizontally back and forth as the lifting height of the lifting component 1 changes to horizontally limit the paper stack, reducing the risk of the remaining sheets of the paper stack being scattered due to the separation of the topmost sheet. By improving the positioning accuracy of the sheets in the paper stack, the difficulty of sheet distribution is reduced. The sucking component 4 sucks and sends the separated single sheet of paper into the conveying component 5, so that the single sheet of paper on the topmost layer of the paper stack can be reliably conveyed to the conveying component 5 to ensure the continuous supply of paper.

[0039] The gluing and forming mechanism (not shown in the figure) is matched with the output end of the conveying component 5. The gluing and forming mechanism is used to apply glue to the paper and form it into a conical paper sleeve. The single-layer paper is conveyed to the gluing and forming mechanism through the conveying component 5. The gluing and forming mechanism is closely matched with the conveying component 5, so that each sheet of paper can be accurately subjected to glue application treatment and finally formed into a conical paper sleeve. The gluing and forming mechanism can select a suitable type in the prior art according to needs, and it is only necessary to be able to realize the glue application to the paper and winding and forming into a conical paper sleeve. In view of the existing related structures, the specific structures and implementation principles are not described in detail here.

[0040] As Figure 1 , Figure 2 and Figure 3As shown, the air blowing assembly 3 is disposed on one side of the limiting assembly 2 that can abut against the paper stack. The limiting assembly 2 drives the air blowing assembly 3 to move, causing the air blowing assembly 3 to reciprocate horizontally under the drive of the limiting assembly 2, thereby making the horizontal distance between the air blowing assembly 3 and the paper stack change periodically. The air blowing assembly 3 is used to blow air against the side of the paper stack to separate the topmost sheet of paper from the paper stack. When the horizontal distance between the air blowing assembly 3 and the paper stack is relatively large, the blown area of the paper stack is large and the blowing effect is dispersed, which helps to reduce the adhesion between multiple sheets of paper in the paper stack; when the horizontal distance between the air blowing assembly 3 and the paper stack is relatively small, the blown area of the paper stack is small and the blowing effect is concentrated, further reducing the adhesiveness of the topmost sheet of paper in the paper stack, so that the topmost sheet of paper in the paper stack can be reliably separated. Under the suction force of the suction assembly 4, the topmost sheet of paper in the paper stack can be reliably distributed, reducing the problem of multiple sheets of paper being simultaneously sucked out due to paper adhesion.

[0041] During use, as the paper is gradually distributed, the lifting assembly 1 gradually raises the bottom of the paper stack, and at the same time, the limiting assembly 2 moves horizontally back and forth as the lifting assembly 1 rises, ensuring that the paper stack always maintains a stable posture. The air blowing assembly 3 moves together with the limiting assembly 2 and blows air against the side of the paper stack to separate the topmost sheet of paper from the paper stack below. The suction assembly 4 is located at the input end of the conveying assembly 5. Once the topmost sheet of paper is successfully separated, the suction assembly 4 can adsorb it and send it into the conveying assembly 5, thus realizing efficient and continuous paper distribution and conveying. This device can efficiently and stably distribute multiple stacked sheets of paper one by one and convey them to the gluing and forming mechanism, improving production efficiency while significantly enhancing the stability of product quality.

[0042] As Figure 1 、 Figure 2 and Figure 3 shown, optionally, the paper separating mechanism includes a support assembly 6, and both the lifting assembly 1 and the limiting assembly 2 are disposed on the support assembly 6. The specific structure of the support assembly 6 is not limited, as long as it can achieve the necessary support function.

[0043] There are two groups of lifting assemblies 1, and the two groups of lifting assemblies 1 are arranged at intervals perpendicular to the paper conveying direction, which helps to keep the paper stack stable during the rising process, avoiding tilting or skewing phenomena, thus ensuring the flatness of the paper stack and enabling each sheet of paper to be accurately separated and sent to the subsequent process, improving the paper separation accuracy.

[0044] As Figure 1 、 Figure 2 and Figure 3As shown, the lifting assembly 1 includes a lifting driving member 11, a lead screw 12, a lead nut 13, and a lifting frame 14. The lifting driving member 11 is arranged on the support assembly 6. The output end of the lifting driving member 11 is drivingly connected to one end of the lead screw 12. The lead nut 13 is screwed onto the lead screw 12, making the entire lifting process smoother and more reliable, reducing the risk of paper damage caused by mechanical vibration, and enhancing the structural stability. The lead nuts 13 of the two groups of lifting assemblies 1 are connected by a connecting member 15. The lifting frame 14 is connected to the two lead nuts 13, and the lifting frame 14 is used to support the paper stack. The design of the double-lifting assembly 1 not only improves the load-bearing capacity of the paper stack but also ensures the continuity and consistency of the paper through synchronous actions, improving production efficiency. At the same time, the way of screw drive helps to improve the moving accuracy and is more suitable for the vertical movement of thinner paper.

[0045] When the lifting driving member 11 works, it can drive the lead screw 12 to rotate. Since the lead nut 13 is screwed onto the lead screw 12 and its rotation is restricted by the connecting member 15, the rotation of the lead screw 12 will be converted into the linear motion of the lead nut 13. At the same time, the lead nuts 13 of the two groups of lifting assemblies 1 are connected by the connecting member 15, which also helps to ensure the synchronous linear movement of the two lead nuts 13. The lifting frame 14 is connected to the two lead nuts 13. Under the action of the linear motion of the lead nuts 13, the lifting frame 14 moves up and down accordingly, thus realizing the smooth lifting of the paper stack.

[0046] As Figure 1 , Figure 2 and Figure 3 shown, optionally, the limiting assembly 2 includes a support member 21, a fixing member 22, an elastic member 23, a pushing member 24, and a sliding member 25. The support member 21 is connected to the support assembly 6. The fixing member 22 is connected to the support member 21. The sliding member 25 is arranged on the side of the fixing member 22 away from the support member 21, and the sliding member 25 is slidably connected to the fixing member 22. The pushing member 24 is arranged between the fixing member 22 and the sliding member 25. The pushing member 24 can push the sliding member 25 to move horizontally away from the fixing member 22, so that the sliding member 25 abuts against the side of the paper stack. The two ends of the elastic member 23 are respectively connected to the fixing member 22 and the sliding member 25. The elastic member 23 is used to make the sliding member 25 move horizontally back to the direction close to the fixing member 22 for reset.

[0047] The sliding member 25 can move horizontally under the action of the pushing member 24, enabling the sliding member 25 to abut against the paper stack, thereby achieving horizontal limiting of the paper stack, ensuring the neatness of the paper stack, improving the positioning accuracy of the topmost sheet of the paper stack, and reducing the problem of decreased separation reliability caused by paper offset. After the pushing member 24 releases the pushing action on the sliding member 25, the elastic member 23 enables the sliding member 25 to quickly reset away from the side of the paper stack after completing the sorting action of the paper stack, so as to keep the paper stack neat through intermittent pushing against the paper stack. When horizontal limiting of the paper stack is required, the sliding member 25 moves outwards under the action of the pushing member 24, contacts the side of the paper stack and applies pressure, thereby achieving effective limiting of the paper stack. At the same time, after completing a paper separation action, the elastic member 23 quickly pulls the sliding member 25 back to its original position to ensure the smooth progress of the next paper separation operation and reduce interference. The elastic member 23 can be a spring, and elastic members 23 can be provided at both ends of the sliding member 25 to improve the movement stability of the sliding member 25.

[0048] As Figure 1 , Figure 2 and Figure 3 shown, optionally, the support member 21 includes a rotating portion 211, a support portion 212, and a limiting portion 213. The bottom of the support portion 212 is connected to the support assembly 6, and the rotating portion 211 is rotatably connected to the support portion 212. The paper separation mechanism further includes an adjustment assembly 7, and the adjustment assembly 7 is provided on the support assembly 6. The adjustment assembly 7 is used to adjust the angle of the rotating portion 211. The limiting portion 213 is connected to one end of the rotating portion 211, and the limiting portion 213 can be relatively positioned with the support portion 212 through a fastener 26 to fix the angle of the rotating portion 211.

[0049] The adjustment assembly 7 can flexibly adjust the angle of the rotating portion 211, thereby adapting to papers of different sizes, improving the applicable range and flexibility of the equipment. The relative positioning design between the limiting portion 213 and the support portion 212 enables the rotating portion 211 to stably maintain the adjusted angle, avoiding the change of the angle of the rotating portion 211 due to vibration or other factors during use, which affects the paper separation effect. The rotating portion 211 can rotate around the support portion 212, and the angle of the rotating portion 211 is adjusted through the adjustment assembly 7 to ensure that the limiting assembly 2 maintains a proper contact position with the side of the paper stack. When a specific angle needs to be fixed, the support portion 212 can be tightened by a fastener 26 such as a bolt to relatively position the limiting portion 213 with the support portion 212, so that the rotating portion 211 is stabilized at the required angle, ensuring the stability of the paper separation process.

[0050] As Figure 1 , Figure 2 and Figure 4As shown, optionally, the adjusting assembly 7 includes a telescopic driving member 71 and a pushing member 72. The fixed end of the telescopic driving member 71 is provided on the supporting assembly 6, the telescopic end of the telescopic driving member 71 is connected to the first end of the pushing member 72, and the second end of the pushing member 72 is used to push the rotating portion 211 away from one end of the limiting portion 213.

[0051] The telescopic driving member 71 provides stable power output, enabling the pushing member 72 to push the rotating portion 211 away from one end of the limiting portion 213, thereby adjusting the posture of the sliding member 25 and further optimizing the effect of paper distribution. When it is necessary to change the angle of the rotating portion 211, the telescopic end of the telescopic driving member 71 extends outwards, pushing the first end of the pushing member 72, and further enabling the second end of the pushing member 72 to push the rotating portion 211 away from one end of the limiting portion 213. This action causes the rotating portion 211 to rotate around the supporting portion 212, achieving precise adjustment of the position of the sliding member 25. The telescopic driving member 71 can be a structure capable of telescoping such as a cylinder, a hydraulic cylinder or an electric telescopic rod, etc.; the pushing member 72 is in a C shape to enable simultaneous adjustment of the angles of the two limiting assemblies 2 so that the set angles of the two limiting assemblies 2 are the same.

[0052] As Figure 1 、 Figure 2 and Figure 3 shown, optionally, the supporting portion 212 is provided with a rotating rod 214, the rotating rod 214 is rotatably connected to the rotating portion 211, and a torsion spring is provided between the rotating rod 214 and the rotating portion 211 so that the rotating portion 211 can rotate and reset. The design of providing a torsion spring between the rotating rod 214 and the rotating portion 211 enables the rotating portion 211 to rotate in the reverse direction after the external force of the pushing member 72 is removed, so as to achieve automatic reset and reduce the equipment maintenance cost.

[0053] As Figure 1 、 Figure 2 and Figure 3 shown, optionally, the limiting assemblies 2 and the lifting assemblies 1 are arranged in one-to-one correspondence, so that one lifting assembly 1 can drive one limiting assembly 2 to move, reducing the load of the lifting assembly 1 and improving the reliability.

[0054] The pusher 24 of the limiting component 2 includes a cam 241, a rotating shaft 242, a first sprocket 243, a chain 244 and a second sprocket 245. The rotating shaft 242 is rotatably connected to the fixing member 22, and the vertical limit of the rotating shaft 242 is realized through the fixing member 22, so as to support the rotating shaft 242. The specific manner in which the rotating shaft 242 is rotatably connected to the fixing member 22 is not limited. Both the first sprocket 243 and the cam 241 are connected to the rotating shaft 242. Under the action of the elastic member 23, the outer peripheral surface of the cam 241 always abuts against the sliding member 25. The second sprocket 245 is connected to the lead screw 12, and the chain 244 is drivingly connected to the first sprocket 243 and the second sprocket 245, so that the rotation of the lead screw 12 can drive the cam 241 to rotate, and the sliding member 25 is pushed to move horizontally back and forth through the rotation of the cam 241. It should be noted that the adjustment of the adjustment component 7 is before the paper distribution. The length of the chain 244 is determined according to the position after the rotation part 211 is rotated and fixed, or an adjustable tension wheel can be provided so that the length of the chain 244 can meet the needs of the rotation of the rotation part 211.

[0055] As Figure 1 , Figure 2 and Figure 3 shown, when the lead screw 12 rotates, the second sprocket 245 rotates accordingly and drives the first sprocket 243 to rotate synchronously through the chain 244, and then the rotating shaft 242 and the cam 241 rotate together. As the cam 241 rotates, its outer peripheral surface always abuts against the sliding member 25, so that the sliding member 25 can be pushed away from the fixing member 22, realizing the horizontal movement of the sliding member 25. In this process, the sliding member 25 overcomes the acting force of the elastic member 23 and extends outwards to complete the limiting action on the side of the paper stack. When the cam 241 rotates back to the corresponding position, the sliding member 25 automatically resets under the restoring action of the elastic member 23 and returns to the initial position. The coordinated action of the cam 241, the rotating shaft 242, the first sprocket 243, the chain 244 and the second sprocket 245 enables the rotation of the lead screw 12 to effectively drive the rotation of the cam 241, and then intermittently push the sliding member 25 to move horizontally away from the fixing member 22 through the rotation of the cam 241, realizing the intermittent pushing on the side of the paper stack, so as to be able to sort the paper stack every time a single sheet of paper is distributed, which helps to improve the reliability of single-sheet paper distribution.

[0056] As Figure 1 , Figure 2 and Figure 3As shown, optionally, the air blowing assembly 3 is biased such that the sliding member 25 can abut against one side of the paper stack, and the air blowing assembly 3 is disposed at one end of the sliding member 25 close to the conveying assembly 5, capable of blowing air at the edge of the uppermost paper of the paper stack close to the conveying assembly 5, effectively reducing the phenomenon of paper sticking and improving the paper separation efficiency. A groove 251 is provided on the side of the sliding member 25 away from the fixing member 22, and the air blowing assembly 3 is disposed in the groove 251. The horizontal depth of the groove 251 is greater than the thickness of the air blowing assembly 3, so that the air blowing assembly 3 is recessed in the sliding member 25. The groove 251 on the sliding member 25 forms a channel at the front end of the blowing direction of the air blowing assembly 3, thereby reducing the risk of turbulent flow in the blowing direction when the horizontal distance between the air blowing assembly 3 and the paper stack is far; when the horizontal distance between the air blowing assembly 3 and the paper stack is close, the groove 251 can improve the concentration of the blowing effect, and further, at one end of the paper stack close to the conveying assembly 5, a vertical gap is formed between the uppermost paper and the lower paper stack, so that the uppermost paper of the paper stack can be reliably distributed.

[0057] When the sliding member 25 moves horizontally on the fixing member 22, the air blowing assembly 3 changes its position along with the movement of the sliding member 25. Since the air blowing assembly 3 is biased at one end of the sliding member 25 close to the conveying assembly 5 and is recessed in the groove 251 on the sliding member 25, it can be ensured that the air blowing assembly 3 always maintains a certain distance from the side of the paper stack, avoiding paper damage or jamming caused by direct contact. At the same time, this design enables the air blowing assembly 3 to more accurately align with the edge of the uppermost paper of the paper stack, thereby effectively separating the papers and improving the paper separation efficiency and reliability.

[0058] As Figure 1 , Figure 2 and Figure 3 shown, optionally, the conveying assembly 5 includes a conveying platform 51, a conveying driving member 52, a connecting shaft 53, and conveying rollers 54. Along the paper conveying direction, the conveying platform 51 is disposed at the rear end of the lifting assembly 1, ensuring the smooth transportation of the paper from the paper stack to the gluing and forming mechanism after being sucked out. The conveying driving member 52 is disposed on the conveying platform 51. The output end of the conveying driving member 52 is drivingly connected to the connecting shaft 53, and the conveying rollers 54 are connected to the connecting shaft 53, enabling the conveying rollers 54 on the connecting shaft 53 to rotate stably and reliably, and the paper can be clamped and conveyed between the conveying rollers 54 and the conveying platform 51. Through the cooperation of the sucking assembly 4, the conveying rollers 54, and the conveying platform 51, the transportation of a single layer of paper is realized, ensuring the continuous conveyance of the paper onto the conveying platform 51.

[0059] When the suction assembly 4 sucks the topmost sheet of paper from the paper stack, the conveying drive 52 drives the conveying roller 54 to rotate through the connecting shaft 53. At this time, the conveying roller 54 cooperates with the suction assembly 4 to smoothly convey a single sheet of paper onto the transfer platform 51, ensuring that the paper does not tilt or jam during the transmission process, improving the stability and efficiency of paper conveyance. The conveying drive 52 can be a motor, and the surface of the conveying roller 54 is rough to facilitate driving the paper to move and achieve the transportation of the paper.

[0060] As Figure 1 , Figure 2 and Figure 3 shown, the suction assembly 4 includes a suction pump and a suction nozzle 41. The suction pump is mounted on the conveying mechanism. The first end of the suction nozzle 41 is connected to the output end of the suction pump, and the second end of the suction nozzle 41 is used to suck the paper, enabling the paper to move from the paper stack to below the conveying roller 54. Thus, through the movement of the conveying roller 54 and the transfer platform 51, a single layer of paper is reliably conveyed on the transfer platform 51. The suction nozzle 41 can be horizontally arranged; it can also be inclined so that the second end of the suction nozzle 41 is lower than its first end to reduce the interference of the second end of the suction nozzle 41 on the paper conveyance while sucking a single layer of paper. The transfer platform 51 can include a conveyor belt, and baffles 55 can be vertically spaced above the conveyor belt to reduce the risk of a single layer of paper flying up on the conveyor belt; the blowing assembly 3 can be a fan. The top height of the paper stack is coordinated with the transfer platform 51 so that the topmost sheet of paper can be smoothly moved onto the transfer platform 51 under the action of the suction assembly 4 and the conveying roller 54 and then conveyed.

[0061] Optionally, the paper separating mechanism further includes two groups of pressing components 8, and the two groups of pressing components 8 are arranged on both sides of the suction assembly 4. There are two groups of conveying rollers 54, and along the paper conveying direction, the two groups of conveying rollers 54 are arranged on both sides of the suction assembly 4. The pressing components 8 are arranged in one-to-one correspondence with the conveying rollers 54, and the pressing components 8 are arranged between the conveying rollers 54 and the suction assembly 4. While vertically limiting the paper, the pressing components 8 can be moved away from the suction assembly 4 to reduce the influence of vertical limiting on the blowing and separating effect of the topmost sheet of paper.

[0062] As Figure 1 , Figure 2 and Figure 3As shown in the figure, the pressing-down assembly 8 includes a vertical telescopic member 81 and a pressing-down member 82. The fixed end of the vertical telescopic member 81 is connected to the support assembly 6, and the pressing-down member 82 is connected to the telescopic end of the vertical telescopic member 81. The vertical telescopic member 81 drives the pressing-down member 82 to move vertically, so as to selectively limit the vertical movement distance of the paper through the pressing-down member 82. At the same time, it helps the position corresponding to the conveying roller 54 on the edge of the paper to be separated from the paper stack under the blowing action of the blowing assembly 3, so that the paper located below the conveying roller 54 can be easily taken out onto the conveying assembly 5. The vertical telescopic member 81 drives the pressing-down member 82 to move vertically to adjust the vertical position of the pressing-down member 82, so that the pressing-down member 82 can reliably limit the vertical movement distance of the paper, preventing the paper from shifting or overlapping due to excessive vertical freedom, thus ensuring the smooth entry of the paper into the subsequent process. During the process of the paper being sucked in by the sucking assembly 4 and sent to the conveying roller 54, the pressing-down assembly 8 can limit the vertical movement distance of the paper, preventing the paper from flying up due to external interference. When it is necessary to place the paper stack to be distributed, the pressing-down member 82 can move upward to reduce the operation difficulty. The vertical telescopic member 81 can be a structure that can achieve telescoping such as a cylinder, a hydraulic cylinder or an electric telescopic rod, etc.

[0063] It can be understood that the device also includes necessary structures for functions such as connection, support, drive, positioning, limiting and control, etc., so that the device can operate normally; parameters such as the shape, size, material and setting quantity of each part of the device can be determined according to needs, as long as the corresponding functions can be achieved.

[0064] The implementation principle of a conical paper sleeve forming device for ice cream cone packaging in an embodiment of the present application is as follows: The lifting assembly 1 supports the paper stack and adjusts its position as the height of the paper stack itself changes, so that the height of the topmost paper of the paper stack remains unchanged, so that the topmost paper of the paper stack is always at a suitable height to be separated; the limiting assembly 2 moves horizontally reciprocally as the lifting height of the paper stack by the lifting assembly 1 changes, so as to horizontally limit the paper stack, reducing the risk of the remaining papers in the paper stack being scattered due to the separation of the topmost paper. By improving the positioning accuracy of the papers in the paper stack, the difficulty of paper distribution is reduced. The sucking assembly 4 sucks and sends the separated single sheet of paper into the conveying assembly 5, so that the single sheet of paper on the topmost layer of the paper stack can be reliably conveyed to the conveying assembly 5, ensuring the continuous supply of the paper; the single layer of paper is conveyed to the glue coating and forming mechanism through the conveying assembly 5, and the glue coating and forming mechanism is closely matched with the conveying assembly 5, so that each sheet of paper can be accurately subjected to glue coating treatment and finally formed into a conical paper sleeve.

[0065] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited by this. Therefore, all equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A conical paper sleeve forming device for ice cream cone packaging, characterized in that, Including: Sheet separating mechanism, the sheet separating mechanism includes a lifting component (1), a limiting component (2), a blowing component (3), a sucking component (4) and a conveying component (5). A stack of several superimposed sheets forms a paper stack. The lifting component (1) is used to support the paper stack and drive the paper stack to move upward, so that the height of the topmost sheet of the paper stack remains unchanged. There are two groups of the limiting component (2) and the blowing component (3). The two groups of the limiting component (2) are respectively arranged on both sides of the lifting component (1). The lifting component (1) is connected to the limiting component (2). When the lifting component (1) drives the paper stack to move upward, the limiting component (2) moves horizontally back and forth. The limiting component (2) can be abutted against the side surface of the paper stack to horizontally limit the paper stack through the limiting component (2). The blowing component (3) is arranged on the side where the limiting component (2) can be abutted against the paper stack. The blowing component (3) is used to blow air against the side surface of the paper stack to separate the topmost sheet of the paper stack from the paper stack. The limiting component (2) drives the blowing component (3) to move, so that the horizontal distance between the blowing component (3) and the side surface of the paper stack changes periodically. The conveying component (5) is arranged on one side of the lifting component (1). The sucking component (4) is arranged at the input end of the conveying component (5). The sucking component (4) is used to suck the topmost sheet of the paper stack to the conveying component (5) to transport single sheets of paper through the conveying component (5); Gluing and forming mechanism, the gluing and forming mechanism is matched with the output end of the conveying component (5). The gluing and forming mechanism is used to apply glue to the paper and form it into a conical paper sleeve.

2. The conical paper sleeve forming device for ice cream cone packaging according to claim 1, wherein, The sheet separating mechanism includes a support component (6). The lifting component (1) and the limiting component (2) are both arranged on the support component (6). There are two groups of the lifting component (1). The lifting component (1) includes a lifting driving part (11), a lead screw (12), a lead screw nut (13) and a lifting frame (14). The lifting driving part (11) is arranged on the support component (6). The output end of the lifting driving part (11) is drivingly connected to one end of the lead screw (12). The lead screw nut (13) is screwed on the lead screw (12). The two groups of the lifting component (1) are arranged at intervals perpendicular to the paper conveying direction. The lead screw nuts (13) of the two groups of the lifting component (1) are connected through a connecting piece (15). The lifting frame (14) is connected to the two lead screw nuts (13). The lifting frame (14) is used to support the paper stack.

3. The cone paper sleeve forming device for ice cream cone packaging according to claim 2, characterized in that The limiting component (2) includes a support member (21), a fixing member (22), an elastic member (23), a pushing member (24), and a sliding member (25). The support member (21) is connected to the support assembly (6), the fixing member (22) is connected to the support member (21), the sliding member (25) is disposed on a side of the fixing member (22) away from the support member (21), the sliding member (25) is slidably connected to the fixing member (22), two ends of the elastic member (23) are respectively connected to the fixing member (22) and the sliding member (25), the pushing member (24) is disposed between the fixing member (22) and the sliding member (25), the pushing member (24) can push the sliding member (25) to horizontally move in a direction away from the fixing member (22) so that the sliding member (25) abuts against the side surface of the paper stack, and the elastic member (23) is used to horizontally move the sliding member (25) back to its original position in a direction close to the fixing member (22).

4. The conical paper sleeve forming device for ice cream cone packaging according to claim 3, characterized in that, The limiting component (2) is correspondingly arranged with the lifting component (1). The pushing member (24) includes a cam (241), a rotating shaft (242), a first sprocket (243), a chain (244), and a second sprocket (245). The rotating shaft (242) is rotatably connected to the fixing member (22), both the first sprocket (243) and the cam (241) are connected to the rotating shaft (242), the second sprocket (245) is connected to the lead screw (12), and the chain (244) is in transmission connection with the first sprocket (243) and the second sprocket (245) so that the rotation of the lead screw (12) can drive the cam (241) to rotate. The outer peripheral surface of the cam (241) abuts against the sliding member (25) so that the rotation of the cam (241) can push the sliding member (25) to move.

5. The cone paper sleeve forming device for ice cream cone packaging according to claim 3, characterized in that, The air blowing component (3) is offset to a side where the sliding member (25) can abut against the paper stack, so that the air blowing component (3) is disposed at one end of the sliding member (25) close to the conveying component (5). A groove (251) is provided on a side of the sliding member (25) away from the fixing member (22), the air blowing component (3) is disposed in the groove (251), and the horizontal depth of the groove (251) is greater than the thickness of the air blowing component (3) so that the air blowing component (3) is recessed in the sliding member (25).

6. The cone paper sleeve forming device for ice cream cone packaging according to claim 3, characterized in that, The sheet separating mechanism further includes an adjusting component (7). The support member (21) includes a rotating portion (211), a supporting portion (212), and a limiting portion (213). The bottom of the supporting portion (212) is connected to the supporting component (6). The rotating portion (211) is rotatably connected to the supporting portion (212). The adjusting component (7) is arranged on the supporting component (6). The adjusting component (7) is used to adjust the angle of the rotating portion (211). The limiting portion (213) is connected to one end of the rotating portion (211). The limiting portion (213) can be relatively positioned with the supporting portion (212) through a fastener (26) to fix the angle of the rotating portion (211).

7. The cone paper sleeve forming device for ice cream cone packaging according to claim 6, characterized in that, The adjusting component (7) includes a telescopic driving member (71) and a pushing member (72). The fixed end of the telescopic driving member (71) is arranged on the supporting component (6). The telescopic end of the telescopic driving member (71) is connected to the first end of the pushing member (72). The second end of the pushing member (72) is used to push the rotating portion (211) away from one end of the limiting portion (213).

8. The conical paper sleeve forming device for ice cream cone packaging according to claim 6, characterized in that, The supporting portion (212) is provided with a rotating rod (214). The rotating rod (214) is rotatably connected to the rotating portion (211). A torsion spring is arranged between the rotating rod (214) and the rotating portion (211) so that the rotating portion (211) can rotate and reset.

9. The cone-shaped paper sleeve forming device for ice cream cone packaging according to claim 2, wherein, The conveying component (5) includes a conveying platform (51), a conveying driving member (52), a connecting shaft (53), and conveying rollers (54). Along the paper conveying direction, the conveying platform (51) is arranged at the rear end of the lifting component (1). The conveying driving member (52) is arranged on the conveying platform (51). The output end of the conveying driving member (52) is in transmission connection with the connecting shaft (53). The conveying rollers (54) are connected to the connecting shaft (53). The suction component (4) cooperates with the conveying rollers (54) to drive the paper to be conveyed onto the conveying platform (51).

10. The cone paper sleeve forming device for ice cream cone packaging according to claim 9, characterized in that, The sheet separating mechanism further includes two groups of pressing components (8). There are two groups of the conveying rollers (54). Along the paper conveying direction, the two groups of conveying rollers (54) are arranged on both sides of the suction component (4). The two groups of pressing components (8) are arranged on both sides of the suction component (4). The pressing components (8) are arranged in one-to-one correspondence with the conveying rollers (54). The pressing components (8) are arranged between the conveying rollers (54) and the suction component (4). The pressing component (8) includes a vertical telescopic member (81) and a pressing member (82). The fixed end of the vertical telescopic member (81) is connected to the supporting component (6). The pressing member (82) is connected to the telescopic end of the vertical telescopic member (81). The vertical telescopic member (81) drives the pressing member (82) to move vertically to selectively limit the vertical moving distance of the paper through the pressing member (82).

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