A sheet self-adapting positioning and conveying device

Abstract

The application provides a paper sheet self-adaptive positioning conveying device, and belongs to the technical field of paper cup processing equipment. The device comprises a rack, a conveying assembly, a protection assembly, a positioning assembly and an adjusting assembly arranged on the rack. The conveying assembly is used for conveying continuous paper sheets, is installed at one end of the rack, and the protection assembly is installed at the other end of the rack away from the conveying assembly. The cooperation between the multiple structures enables the paper sheet to be self-adaptively matched with paper sheets of different width specifications for side edge deviation correction positioning during the conveying and positioning process, actively completes positioning and deviation correction during each lifting process for cutting preparation, eliminates the accumulated slight deviation during the conveying process, effectively avoids the problem of cutting position deviation caused by deviation accumulation, effectively improves the adaptability and processing precision of the device, and enables the positioning and adsorption to be released in advance during the descending and resetting process after cutting, thereby facilitating subsequent continuous processing and effectively ensuring the quality of the cut products.

Description

Technical Field

[0001] This invention relates to the field of paper cup processing equipment technology, and more specifically, to a paper sheet adaptive positioning and conveying device. Background Technology

[0002] In the actual processing of paper cups, the initial stage involves handling the continuous paper sheet material in an unfolded state. Operators strictly follow the pre-set product design size parameters and use automated or semi-automated cutting equipment to precisely cut this long roll of paper into segments, thereby obtaining individual paper sheets with uniform specifications and flat edges. Subsequently, these cut paper sheets are transported in an orderly manner to the subsequent forming process. In the forming stage, specialized equipment uses precise mechanical movements to bend the flat paper sheets into a cylindrical shape and applies adhesive at the seams for firm bonding, ultimately forming a complete cup body prototype ready to enter the next processing stage.

[0003] In existing technologies, common conveying devices are prone to accumulating positional shifts in paper sheets during transport due to inherent flatness errors, gap deviations between conveying rollers, or minor fluctuations in traction speed. If these shifts are not corrected before cutting, the final cut paper sheets will not meet design requirements, thus affecting the processing quality of subsequent paper cup forming stages. Therefore, inventing an adaptive paper sheet positioning conveying device to solve these problems has become a pressing issue for those skilled in the art. Summary of the Invention

[0004] To overcome the above shortcomings, this invention provides a paper sheet adaptive positioning conveying device, which aims to solve the problem that in common conveying devices, paper sheets are prone to gradually accumulating positional shifts during the conveying process due to the flatness error of the paper itself, the gap deviation between the conveying rollers, or the slight fluctuations in the traction speed. If this shift cannot be corrected in time before cutting, it will result in the final cut single paper sheet size not meeting the design requirements, thereby affecting the processing quality of the subsequent paper cup forming process.

[0005] This invention is implemented as follows: This invention provides a paper sheet adaptive positioning and conveying device, including a frame and a conveying component, a protective component, a positioning component and an adjusting component disposed on the frame. The conveying component is used to convey continuous paper sheets and is installed at one end of the frame. The protective component is installed at the end of the frame away from the conveying component. The protective component is used to isolate and protect the end of the paper sheet to be cut. The protective component includes a positioning frame, a sliding rod, a connecting plate, a fixing rod, a first spring, and a hydraulic rod. The positioning component is installed inside the protective component. The positioning component is used to fix the end of the paper to be cut. The positioning component includes a floating platform, a negative pressure air frame and a piston sleeve. The lower end of the floating platform is fixedly connected to the telescopic end of the hydraulic rod. The adjustment assembly is installed on both sides of the floating table. The adjustment assembly is used to adjust the feeding direction of the paper sheet. The adjustment assembly includes a fixed frame, a limiting rod, a third spring, a sliding frame, and a roller.

[0006] Preferably, the positioning frame is fixed on the machine frame, the four sliding rods are symmetrically fixed in pairs on the inner wall of the positioning frame, the upper surface of the negative pressure air frame is provided with a plurality of adsorption holes communicating with its internal cavity, and the four connecting plates are fixed in pairs on the inner side wall of the positioning frame, with one end of the connecting plate being fixed by bolts and fixing rods.

[0007] Preferably, the lower end of the fixing rod is provided with a sliding groove, the upper side wall of the fixing rod is equipped with a slider, the lower end of the fixing rod is fixedly connected to the upper end of the first spring near the outer side wall of the sliding groove, and the hydraulic rod is installed at the bottom of the positioning frame.

[0008] Preferably, the negative pressure air frame is fixed to the upper end of the floating platform by bolts, and the four piston sleeves are symmetrically installed in pairs on the side wall of the negative pressure air frame. The upper side wall of the piston sleeve is provided with a connection port that communicates and is fixed with the negative pressure air frame, and a one-way valve is installed on the upper side wall of the piston sleeve.

[0009] Preferably, a rod is fixedly connected to the bottom end of the piston sleeve, the outer wall of the rod is slidably connected to the inner wall of the groove, multiple notches are provided on the upper side wall of the rod, a second spring is installed at the bottom of the piston sleeve, a piston plate is installed at the upper end of the second spring, the upper end of the piston plate is fixedly connected to the lower end of the first spring, and the inner wall of the piston plate is slidably connected to the outer wall of the rod.

[0010] Preferably, the two fixed frames are symmetrically fixed on both sides of the floating platform. The outer walls of the two sides of the fixed frames are fixedly connected with inclined guide grooves. The inclined guide grooves are composed of two parallel inclined strips. The inner wall of the inclined guide grooves and the outer wall of the slider are slidably connected.

[0011] By adopting the above technical solution, it is possible to adaptively adapt to paper sheets of different widths, complete the guidance and correction of the paper sheets, and thus ensure the stability of the paper sheet's direction during the conveying process. As the cutting process is completed and the floating table begins to move down, the entire adjustment component will move away from the paper sheet and relax it. This allows the adjustment component to actively reposition the paper sheet before each cutting preparation. This periodic reset mechanism can effectively avoid the gradual accumulation and amplification of small deviations caused by feeding along the conveying direction during conventional continuous conveying, thereby preventing the subsequent cutting position from mismatching with the preset pattern and tear position of the paper cup, thus effectively ensuring the subsequent cutting quality.

[0012] Preferably, a plurality of the limiting rods are fixed at equal intervals to the side wall of the fixed frame, the third spring is sleeved on the outside of the limiting rods, and one end of the third spring is fixedly connected to the inner wall of the fixed frame.

[0013] Preferably, the upper end of the sliding frame is fixedly connected to an ear plate, the inner wall of the ear plate is slidably connected to the outer wall of the limiting rod, the side wall of the ear plate is fixedly connected to one end of the third spring, and one end of the roller shaft is rotatably mounted on the inner wall of the sliding frame via a shaft body.

[0014] By adopting the above technical solution, the entire positioning component first pushes the paper upward during the cutting preparation process, completing active positioning in this process. At the same time, the paper is adsorbed and fixed as it approaches the upper surface inside the fixed frame. This sequence of first limiting space and then adsorbing and fixing ensures that the main body of the paper is effectively constrained during the lifting process. On this stable basis, the protruding end of the paper is then cut, which can fundamentally prevent the main body of the paper from accidentally slipping, deflecting, or changing position due to the cutting force or vibration of the blade. This ensures the accuracy and repeatability of the cutting trajectory and guarantees the quality of the cut.

[0015] The beneficial effects of this invention are: The coordinated operation of multiple structures enables the paper sheet to adaptively match different width specifications for side correction and positioning during the conveying and positioning process. Simultaneously, it achieves adsorption and fixation during the lifting and positioning process. Compared to conventional fixed positioning mechanisms, this device can actively complete positioning and correction during each lifting preparation for cutting, eliminating minor deviations accumulated during conveying and effectively preventing the problem of cutting position shift due to accumulated deviations. It can also adapt to the processing of different specifications of paper sheets within a certain range, effectively improving the adaptability and processing accuracy of the device. During the descent and reset process after cutting, positioning and adsorption can be released in advance, facilitating the removal of the cut paper sheet while ensuring the stability of the remaining paper sheet position for subsequent continuous processing. The overall structure has strong linkage, eliminating the need for multiple additional power components to separately complete the correction, positioning, and fixing steps, effectively reducing the control complexity and manufacturing cost of the device, while effectively ensuring the quality of the cut product. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of a paper sheet adaptive positioning and conveying device provided by an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the protective component of a paper sheet adaptive positioning and conveying device provided by an embodiment of the present invention; Figure 3 This invention provides a paper sheet adaptive positioning and conveying device. Figure 2 Enlarged view of the structure of region A in the middle; Figure 4 This is a cross-sectional view of the protective component structure in a paper adaptive positioning and conveying device provided by an embodiment of the present invention; Figure 5 This invention provides a paper sheet adaptive positioning and conveying device. Figure 4 Enlarged view of the structure of region B in the middle; Figure 6 This is a schematic diagram of the structural combination of the positioning component and the adjustment component in a paper adaptive positioning and conveying device provided by an embodiment of the present invention; Figure 7 This is a half-sectional view of the structural combination of the positioning component and the adjustment component in a paper adaptive positioning and conveying device provided by an embodiment of the present invention; Figure 8This invention provides a paper sheet adaptive positioning and conveying device. Figure 7 Enlarged view of the structure of region C in the middle; Figure 9 This is a schematic diagram of the adjustment component structure in a paper adaptive positioning and conveying device provided by an embodiment of the present invention.

[0018] In the diagram: 1. Frame; 2. Conveying assembly; 3. Protective assembly; 31. Positioning frame; 32. Slide rod; 33. Connecting plate; 34. Fixing rod; 341. Slide groove; 342. Slider; 35. First spring; 36. Hydraulic rod; 4. Positioning assembly; 41. Floating table; 42. Negative pressure air frame; 43. Piston sleeve; 431. Connecting port; 432. One-way valve; 44. Insert rod; 441. Notch; 45. Second spring; 46. Piston plate; 5. Adjusting assembly; 51. Fixing frame; 511. Angled guide groove; 52. Limiting rod; 53. Third spring; 54. Sliding frame; 541. Ear plate; 55. Roller shaft; Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example, refer to Figures 1-9 An adaptive positioning and conveying device for paper sheets includes a frame 1 and a conveying component 2, a protective component 3, a positioning component 4 and an adjusting component 5 disposed on the frame 1. The conveying component 2 is used to convey continuous paper sheets and is installed at one end of the frame 1. The protective component 3 is installed at the end of the frame 1 away from the conveying component 2. The protective component 3 is used to isolate and protect the end of the paper to be cut. The protective component 3 includes a positioning frame 31, a slide bar 32, a connecting plate 33, a fixing rod 34, a first spring 35, and a hydraulic rod 36. The positioning component 4 is installed inside the protective component 3. The positioning component 4 is used to fix the end of the paper to be cut. The positioning component 4 includes a floating table 41, a negative pressure air frame 42 and a piston sleeve 43. The lower end of the floating table 41 is fixedly connected to the telescopic end of the hydraulic rod 36. Adjustment components 5 are installed on both sides of the floating table 41. Adjustment components 5 are used to adjust the conveying direction of the paper sheet. Adjustment components 5 include a fixed frame 51, a limit rod 52, a third spring 53, a sliding frame 54, and a roller 55.

[0021] Furthermore; the positioning frame 31 is fixed on the frame 1, four sliding rods 32 are symmetrically fixed in pairs on the inner wall of the positioning frame 31, and four connecting plates 33 are fixed in pairs on the inner side wall of the positioning frame 31. One end of the connecting plate 33 is fixed by bolts and fixing rods 34. The lower end of the fixing rod 34 is provided with a sliding groove 341, and a slider 342 is installed on the upper side wall of the fixing rod 34. The lower end of the fixing rod 34 is fixedly connected to the upper end of the first spring 35 near the outer side wall of the sliding groove 341. The hydraulic rod 36 is installed on the positioning frame 31. At the bottom of 1, the negative pressure air frame 42 is fixed to the upper end of the floating platform 41 by bolts. Four piston sleeves 43 are symmetrically installed in pairs on the side wall of the negative pressure air frame 42. The upper surface of the negative pressure air frame 42 has multiple adsorption holes communicating with its internal cavity. The upper side wall of the piston sleeve 43 is provided with a connection port 431 that communicates and is fixed with the negative pressure air frame 42. A one-way valve 432 is installed on the upper side wall of the piston sleeve 43. The bottom end of the piston sleeve 43 is fixedly connected to an insertion rod 44. The outer wall of the insertion rod 44 is slidably connected to the inner wall of the slide groove 341. The upper side wall of the insertion rod 44 has multiple notches 441. A second spring 45 is installed at the bottom of the piston sleeve 43. A piston plate 46 is installed at the upper end of the second spring 45. The upper end of the piston plate 46 is fixedly connected to the lower end of the first spring 35. The inner wall of the piston plate 46 is slidably connected to the outer wall of the insertion rod 44. Two fixed frames 51 are symmetrically fixed on both sides of the floating platform 41. An oblique guide groove 511 is fixedly connected to the outer walls of both sides of the fixed frame 51. The oblique guide groove 511 is composed of two parallel oblique strips. The inner wall of 511 and the outer wall of slider 342 are slidably connected. Multiple limiting rods 52 are fixed at equal intervals on the side wall of fixed frame 51. The third spring 53 is sleeved on the outside of the limiting rod 52. One end of the third spring 53 is fixedly connected to the inner wall of fixed frame 51. The upper end of sliding frame 54 is fixedly connected to ear plate 541. The inner wall of ear plate 541 and the outer wall of limiting rod 52 are slidably connected. The side wall of ear plate 541 and one end of third spring 53 are fixedly connected. One end of roller shaft 55 is rotatably mounted on the inner wall of sliding frame 54 through shaft.

[0022] It should be noted that when this device is working, the continuous paper sheet is smoothly fed into the internal space of the protective component 3 by the conveying component 2. When the front end of the continuous paper sheet to be cut extends out of the positioning frame 31 and just reaches the preset length, the conveying action stops (the conveying component 2 precisely controls the rotation speed of the unwinding roller through the motor, and completes the stable conveying of the continuous paper sheet under the coordinated guidance and support of multiple limit rollers. This conveying mechanism is a mature existing technology in the industry, and will not be described in detail here). The side wall of the positioning frame 31 is provided with a corresponding cutting component, which can perform subsequent cutting on the paper sheet extending out of the positioning frame 31 (this cutting component precisely controls the rotation speed of the eccentric shaft through the motor, driving the cutting blade connected by the connecting rod below to perform a reciprocating cutting process. This is a mature existing technology in the industry, and will not be described in detail here). Then the telescopic end of the hydraulic rod 36 begins to move outward, thereby driving the floating table 41 to move smoothly upward along the guide trajectory of the fixed rod 34. As the floating platform 41 moves upward, it simultaneously lifts the paper placed above it. At the same time, the piston sleeve 43 also moves upward in sync with the rise of the negative pressure air frame 42. During this process, the insertion rod 44 slides relative to the groove 341 at the lower end of the fixed rod 34, while the piston plate 46 slides upward along the outer wall of the insertion rod 44. As the piston sleeve 43 continues to rise, the piston plate 46 is first pushed, compressing the second spring 45 and moving inside the piston sleeve 43. During this stage, the space inside the negative pressure air frame 42 maintains air communication with the lower end of the piston sleeve 43 through the notch 441 on the outer side of the insertion rod 44, thus ensuring negative pressure. Stable transmission allows the paper sheet to be smoothly lifted upwards and gradually approach the inner top of the positioning frame 31. Simultaneously, the upward-moving floating platform 41 also drives the fixed frames 51 mounted on both sides to move together. The inclined guide grooves 511 on the outer wall of the fixed frames 51 slide along the sliders 342 on the side wall of the fixed rod 34. Because the inclined guide grooves 511 are designed at an angle, as the fixed frames 51 move upwards with the floating platform 41, the rollers 55 at their ends, guided by the inclined guide grooves 511, gradually move closer to the side of the paper sheet. If the paper sheet has shifted position during the previous conveying process, this structure can adaptively push and... Adjust the position of the paper sheet until both rollers 55 are tightly fitted to the left and right edges of the paper sheet. Supported by the elasticity of the third spring 53, once the paper sheet is positioned, even if the two fixed frames 51 tend to move closer together due to the continued upward movement of the floating platform 41, the third spring 53 will be compressed, keeping the position of the rollers 55 relatively unchanged. This enhances the clamping and positioning strength of the paper sheet. Furthermore, the third spring 53 has relatively weak elasticity; when the rollers 55 contact a displaced piece of paper, the paper sheet can push the rollers 55 to squeeze the third spring 53 to complete the repositioning. This also avoids the problem of excessive clamping force causing the paper sheet edges to fold or wrinkle. This mechanism can adaptively adapt to different... Paper pieces of the same width are used to guide and correct the paper, thus ensuring the stability of the paper's direction during the conveying process. As the cutting process is completed and the floating table 41 begins to move down, the entire adjustment component 5 will move away from the paper and relax it. This allows the adjustment component 5 to actively reposition the paper before each cutting preparation. This periodic reset mechanism can effectively avoid the gradual accumulation and amplification of small deviations caused by feeding along the conveying direction during the regular continuous conveying process. This prevents the subsequent cutting position from mismatching with the preset pattern and tear position of the paper cup, providing a positioning basis for subsequent cutting and effectively ensuring the subsequent cutting quality. When the upper end of the piston plate 46 is fully aligned with the bottom end of the notch 441, the floating platform 41 continues to move upward along the preset trajectory. At this time, the piston plate 46 will overcome the elastic force of the second spring 45 and move downward relative to the continuously rising piston sleeve 43. This relative motion causes the volume of the sealed space inside the piston sleeve 43 near the upper end of the piston plate 46 to increase instantaneously, thereby forming a significant negative pressure suction in this area. At the same time, the air in the negative pressure air frame 42 is continuously drawn into the internal space of the piston sleeve 43 through the connection port 431 between the two, which makes the upper chamber of the negative pressure air frame 42... A negative pressure is quickly generated, and with this negative pressure effect, the paper is stably adsorbed and fixed on the upper surface of the floating platform 41. During this process, the restoring force provided by the second spring 45 not only causes the piston plate 46 to move downward, but its continuous action also effectively maintains the dynamic stability of the negative pressure adsorption state. Subsequently, when the floating platform 41 carries the adsorbed paper further upward, the one-way valve 432 integrated in the connecting channel immediately activates its reverse function. The one-way valve 432 can only allow external air to enter the piston sleeve 43, thus effectively preventing the pressure inside the piston sleeve 43 and the negative pressure air frame 42 from increasing. If the pressure is too low, the paper cannot be moved upwards. Air is drawn from the outside to maintain stable internal air pressure, ensuring a constant pressure within the adsorption chamber and preventing fluctuations in adsorption force during the lifting phase. Simultaneously, the first spring 35, supporting the overall structure of the floating platform 41, is gradually compressed until the upper edge of the adsorbed paper finally contacts the upper positioning surface inside the fixed frame 51, reliably clamping and fixing the cutting end of the paper. During the cutting preparation phase, a pushing action is first performed to move the paper smoothly upwards, actively completing the initial spatial limitation during this movement. At the critical moment when the paper is close to the upper surface of the fixed frame 51, the negative pressure adsorption mechanism is triggered simultaneously to achieve a seamless connection from limiting to firm fixation. This sequence of first limiting space and then adsorption fixation ensures that the main body of the paper is effectively constrained during the lifting process. On this stable basis, the extended end of the paper is then cut, which can prevent the main body of the paper from accidentally slipping, deflecting or changing position due to the cutting force or vibration of the blade. This ensures the accuracy and repeatability of the cutting trajectory, provides a positioning basis for subsequent cutting, and guarantees the quality after cutting. After the cutting process is completed, the telescopic end of the hydraulic rod 36 begins to retract smoothly, driving the floating platform 41 connected to it to move downwards. In the initial stage of the downward movement of the floating platform 41, the previously compressed first spring 35 begins to slowly release its elastic potential energy and gradually restores its original length. During this process, the inside of the negative pressure air frame 42 maintains a stable negative pressure state, continuously adsorbing the paper. This key design effectively prevents the paper from accidentally adhering to the inner upper surface of the positioning frame 31 due to static electricity or friction, thereby avoiding unnecessary displacement of the paper position when it is released from the constraint, ensuring that the subsequent conveying and cutting processes can be smoothly and uninterruptedly connected. As the floating platform 41 continues to descend to the lowest point, the fixed frame 51 also moves downwards synchronously. At this time, the oblique guide groove 511 on the side of the fixed frame 51 moves along the sliding... The inclined surface of block 342 slides in the opposite direction. This movement is transmitted to the rollers 55 on both sides of the positioning frame 31, driving the rollers 55 on both sides to move away from each other, thereby releasing the clamping limit on the two sides of the paper. At the same time, the piston sleeve 43 linked with the floating table 41 also moves down. The piston plate 46 inside it quickly returns to the initial position under the combined action of the restoring force of the second spring 45 and the external air pressure. Thus, a complete single cutting operation cycle is declared complete. The subsequent paper will continue to move forward smoothly under the drive of the conveying system until it reaches the next preset processing position and stops precisely. The system will automatically repeat the above positioning adjustment, clamping, cutting and releasing steps. In this way, efficient and adaptive positioning and conveying of continuous paper can be achieved, providing a positioning basis for subsequent cutting. Through the coordinated operation of the aforementioned structures, the paper sheet can adaptively match different width specifications for side-alignment correction during the conveying and positioning process. Simultaneously, it achieves adsorption and fixation during the lifting and positioning process. Compared to conventional fixed positioning mechanisms, this device can actively complete positioning and correction during each lifting preparation for cutting, eliminating minor deviations accumulated during conveying and effectively preventing cutting position offset due to accumulated deviations. It can also adapt to processing paper sheets of different specifications within a certain range without requiring additional replacement of positioning components, effectively improving the device's adaptability and processing accuracy. During the descent and reset process after cutting, positioning and adsorption can be released in advance, facilitating the removal of the cut paper sheet while ensuring the stability of the remaining paper sheet position for subsequent continuous processing. The overall structure has strong linkage, eliminating the need for multiple additional power components to separately complete the correction, positioning, and fixing steps, effectively reducing the control complexity and manufacturing cost of the device, providing a positioning basis for subsequent cutting, and effectively ensuring the quality of the cut product.

[0023] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A paper sheet adaptive positioning and conveying device, comprising a frame (1) and a conveying assembly (2), a protective assembly (3), a positioning assembly (4), and an adjusting assembly (5) disposed on the frame (1), characterized in that, The conveying assembly (2) is used to convey continuous paper sheets, and the conveying assembly (2) is installed at one end of the frame (1); The protective component (3) is installed at one end of the frame (1) away from the conveying component (2). The protective component (3) is used to isolate and protect the end of the paper to be cut. The protective component (3) includes a positioning frame (31), a slide bar (32), a connecting plate (33), a fixing rod (34), a first spring (35), and a hydraulic rod (36). The positioning component (4) is installed inside the protective component (3). The positioning component (4) is used to fix the end of the paper to be cut. The positioning component (4) includes a floating platform (41), a negative pressure air frame (42) and a piston sleeve (43). The lower end of the floating platform (41) is fixedly connected to the telescopic end of the hydraulic rod (36). The adjustment assembly (5) is installed on both sides of the floating table (41). The adjustment assembly (5) is used to adjust the conveying direction of the paper sheet. The adjustment assembly (5) includes a fixed frame (51), a limiting rod (52), a third spring (53), a sliding frame (54), and a roller (55).

2. The paper sheet adaptive positioning and conveying device according to claim 1, characterized in that, The positioning frame (31) is fixed on the frame (1), the four slide rods (32) are symmetrically fixed in pairs on the inner wall of the positioning frame (31), and the four connecting plates (33) are fixed in pairs on the inner side wall of the positioning frame (31). One end of the connecting plate (33) is fixed by bolts and fixing rods (34).

3. The paper sheet adaptive positioning and conveying device according to claim 2, characterized in that, The lower end of the fixed rod (34) is provided with a sliding groove (341), and a slider (342) is installed on the upper side wall of the fixed rod (34). The lower end of the fixed rod (34) is fixedly connected to the upper end of the first spring (35) near the outer side wall of the sliding groove (341). The hydraulic rod (36) is installed at the bottom of the positioning frame (31).

4. The paper sheet adaptive positioning and conveying device according to claim 3, characterized in that, The negative pressure air frame (42) is fixed to the upper end of the floating platform (41) by bolts. The four piston sleeves (43) are symmetrically installed on the side wall of the negative pressure air frame (42) in pairs. The upper surface of the negative pressure air frame (42) is provided with a plurality of adsorption holes communicating with its internal cavity. The upper side wall of the piston sleeve (43) is provided with a connection port (431) that communicates and is fixed with the negative pressure air frame (42). A one-way valve (432) is installed on the upper side wall of the piston sleeve (43).

5. The paper sheet adaptive positioning and conveying device according to claim 4, characterized in that, The bottom end of the piston sleeve (43) is fixedly connected to the insert rod (44). The outer wall of the insert rod (44) is slidably connected to the inner wall of the slide groove (341). The upper side wall of the insert rod (44) is provided with multiple notches (441). The bottom of the piston sleeve (43) is equipped with a second spring (45). The upper end of the second spring (45) is equipped with a piston plate (46). The upper end of the piston plate (46) is fixedly connected to the lower end of the first spring (35). The inner wall of the piston plate (46) is slidably connected to the outer wall of the insert rod (44).

6. The paper sheet adaptive positioning and conveying device according to claim 5, characterized in that, Two fixed frames (51) are symmetrically fixed on both sides of the floating platform (41). The outer walls of both sides of the fixed frames (51) are fixedly connected with inclined guide grooves (511). The inclined guide grooves (511) are composed of two parallel inclined strips. The inner wall of the inclined guide grooves (511) and the outer wall of the slider (342) are slidably connected.

7. The paper sheet adaptive positioning and conveying device according to claim 6, characterized in that, Multiple limiting rods (52) are fixed at equal intervals to the side wall of the fixed frame (51), and the third spring (53) is sleeved on the outside of the limiting rods (52). One end of the third spring (53) is fixedly connected to the inner wall of the fixed frame (51).

8. The paper sheet adaptive positioning and conveying device according to claim 7, characterized in that, The upper end of the sliding frame (54) is fixedly connected to an ear plate (541). The inner wall of the ear plate (541) is slidably connected to the outer wall of the limiting rod (52). The side wall of the ear plate (541) is fixedly connected to one end of the third spring (53). One end of the roller shaft (55) is rotatably mounted on the inner wall of the sliding frame (54) through the shaft.

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