Counting and grouping device for paper materials

Abstract

The utility model provides a counting and grouping device for paper materials, and the device comprises a supporting skeleton which is provided with a supporting plate; the paper counting mechanism comprises a first driving part, an air suction part and a paper shifting part; wherein the air suction part comprises a cam and a suction device connected with the cam, and an air inlet of the suction device faces the supporting plate; the paper shifting part comprises a synchronous pulley group and a shifting rod; wherein the cam and a transmission wheel of the synchronous belt wheel set are coaxially connected to an output shaft of the first driving part, the deflector rod is connected with a driven wheel of the synchronous belt wheel set, and the cam and the deflector rod synchronously move in opposite phases; the paper separating mechanism comprises a second driving part, a push rod part and a turntable; wherein the push rod part comprises a push block and a hook which are connected with each other, the hook is close to an air inlet of the suction device, and the push block is connected with the second driving part through a connecting rod mechanism; wherein the push rod portion initially presses the paper material. By means of the device, the problems that when a teacher counts and distributes test papers in daily teaching, the work labor intensity is large, and the classroom efficiency is not high are solved.

Description

Technical Field

[0001] The present application relates to the field of teaching equipment, and particularly to a counting and grouping device for paper materials. Background Art

[0002] In schools and within the education examination system, it is a very frequent occurrence for teachers to distribute printed test papers, lecture notes, and exercise questions to students. Currently, in various schools, this work is basically completed manually by teachers. Then, according to the seating distribution of students in the classroom, manual counting is carried out to divide a whole stack of papers into several groups and then passed to each group of students. Distributing test papers is mechanical and repetitive labor with a huge workload. Both the teacher's counting and the students' waiting consume a large amount of time and energy, and manual counting of papers is prone to human errors such as overcounting or undercounting.

[0003] In the related art, there are some products that can achieve the function of counting test papers, but they do not have the grouping function, and they are costly. Their applications are limited to factories and cannot be applied to schools or personal use. Therefore, the modernization level of the teaching environment has not been improved yet. Utility Model Content

[0004] In view of the above problems, the present utility model provides a counting and grouping device for paper materials to solve the problems of high work intensity and low classroom efficiency when teachers count and distribute test papers in daily teaching.

[0005] The technical solution of the present utility model is as follows:

[0006] A counting and grouping device for paper materials, comprising:

[0007] A support skeleton, on which a support plate is installed, and the support plate is used for placing paper materials; and, installed on the support skeleton are:

[0008] A paper counting mechanism, including a first driving part, a suction part, and a paper pushing part; wherein, the suction part includes a cam and a suction device connected to the cam, and the air inlet of the suction device faces the support plate; the paper pushing part includes a synchronous pulley group and a push rod; wherein,

[0009] The cam and the driving pulley of the synchronous pulley group are coaxially connected to the output shaft of the first driving part, the push rod is connected to the driven pulley of the synchronous pulley group, and the cam and the push rod move synchronously with opposite phases;

[0010] A paper separating mechanism, including a second driving part, a push rod part, and a turntable; wherein, the push rod part includes a connected push block and a hook, the hook is close to the air inlet of the suction device, and the push block is connected to the second driving part through a link mechanism; wherein, the push rod part initially presses the paper materials;

[0011] Wherein, the output shaft of the first driving part rotates, driving the cam to rotate and the transmission wheel to rotate. The cam converts the rotational motion into the up-and-down reciprocating motion of the suction device with its own contour. The suction device generates suction to suck the uppermost sheet of the paper material on the support plate when moving to the lowest point, and then moves to the highest point. At the same time, the transmission wheel drives the driven wheel to rotate, and the driven wheel drives the lever to rotate below the sucked paper, and the sucked paper is toggled to be located above the hook.

[0012] The second driving part provides torque, and drives the push block and the hook to move close to the turntable through the link mechanism, so as to push the paper to be transferred onto the turntable.

[0013] After each time the turntable receives the paper, it rotates a preset angle around its own rotation center, so as to stagger and group the previous paper and the next paper.

[0014] As one of the preferred solutions, the suction device includes a blower, the air inlet of the blower is communicated with a suction nozzle, the cross-section in the middle of the suction nozzle is smaller than the cross-sections on both sides, and the end face close to the support plate is inclined.

[0015] As one of the preferred solutions, the lever includes a rotating part and two toggling rods. The rotating part is connected to the driven wheel, and the two toggling rods are symmetrically connected to both ends of the rotating part, and the toggling rods extend horizontally towards the support plate.

[0016] As one of the preferred solutions, the second driving part includes a motor and a second synchronous pulley set. The push block is connected to the synchronous belt of the second synchronous pulley set through the link mechanism, and the moving direction of the synchronous belt is towards the turntable.

[0017] As one of the preferred solutions, the device further includes components installed on the support frame:

[0018] A lifting mechanism, including a third driving part and a lifting block, and the lifting block is sleeved on the outer periphery of the output shaft of the third driving part;

[0019] Wherein, the lifting block is connected to the sheet counting mechanism to drive the sheet counting mechanism to move up and down along the output shaft, so as to adjust the distance between the air inlet and the paper material on the support plate.

[0020] As one of the preferred solutions, the lifting block and the sheet counting mechanism are respectively connected to the support frame through sliding mechanisms.

[0021] As one of the preferred solutions, the paper separating mechanism further includes:

[0022] The tray is located below the support plate and is mounted on the linkage mechanism to move synchronously with the linkage mechanism and the push rod portion.

[0023] As one of the preferred solutions, the paper separating mechanism further includes:

[0024] The stop post is mounted on the support frame, and the stop post is located below the edge of the support plate adjacent to the turntable.

[0025] As one of the preferred solutions, the paper counting mechanism further includes:

[0026] The anti-slip block is mounted below the paper counting mechanism and is located above the support plate;

[0027] The anti-slip block is connected with a fourth driving portion, and the anti-slip block is driven by the fourth driving portion to be in a folded state when the first driving portion starts and in an unfolded state when it stops.

[0028] As one of the preferred solutions, the device further includes:

[0029] The magnetic sensor is mounted on the dial rod and is used for monitoring the number of rotation turns of the dial rod;

[0030] The photoelectric sensor is located above the support plate and is used for scanning the picking-up condition of the paper;

[0031] The ultrasonic sensor is located above the support plate and is used for measuring the distance between the air inlet and the paper material.

[0032] Compared with the prior art, the present application has the following advantages:

[0033] The teacher can pre-divide the papers on the machine. Just input the number of papers to be counted and the dividing method. The paper counting mechanism works in a cycle to count the preset number of papers in each portion. The paper separating mechanism pushes the counted papers onto the turntable. After the turntable receives each portion of papers pushed down by the paper separating mechanism each time, it rotates a certain angle. Therefore, each portion of test papers is arranged in an interlaced manner, which is convenient for the teacher to distinguish and distribute. Therefore, this device can automatically complete the counting and dividing of papers, and directly distribute them to each group of students by portion on-site. It not only greatly improves the efficiency, but also saves some time and energy for teachers and students, and improves the automation and intelligent level of the campus. Brief Description of the Drawings

[0034] In order to more clearly illustrate the technical solutions of the present application, the drawings required to be used in the description of the present application will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0035] Figure 1 It is an overall structural diagram of a counting and grouping device for paper materials according to an embodiment of the present application;

[0036] Figure 2 It is a schematic diagram of the overall structure of the support frame described in one embodiment of the present application;

[0037] Figure 3 It is a schematic diagram of the overall structure of the air suction nozzle according to an embodiment of the present application;

[0038] Figure 4 This is an overall structural diagram of the paper counting mechanism according to an embodiment of the present application assembled on a supporting frame;

[0039] Figure 5 This is an overall structural diagram of the paper counting mechanism, the lifting mechanism and the sliding mechanism of one embodiment of the present application assembled on the supporting frame;

[0040] Figure 6 This is an overall structural diagram of a paper separation mechanism without a rotating disk assembled on a supporting frame according to an embodiment of the present application;

[0041] Figure 7 It is an overall structural diagram of a paper separation mechanism without a rotating disk according to an embodiment of the present application;

[0042] Figure 8 It is an overall diagram of an embodiment of the present application with an anti-sliding block and a blocking column.

[0043] Description of reference numerals:

[0044] 1. Support frame; 111. Long steel pipe; 112. Quasi-rectangular frame; 113. Round rotating disk; 114. Rectangular steel pipe; 2. Support plate; 3. First driving part; 4. Cam; 5. Suction device; 51. Fan casing; 6. Synchronous belt pulley set; 61. Transmission wheel; 62. Driven wheel; 7. Push rod; 71. Rotating part; 72. Push rod; 8. Connecting rod mechanism; 81. Parallelogram connecting rod; 82. Transition section; 83. Connecting section; 9. Second driving part; 91. Synchronous belt; 92. Keel; 93. Guide structure; 931. First guide round rod; 932. Second guide round rod; 10. Suction nozzle; 11. Push block; 12. Hook; 13. Turntable; 14. Tray; 15. Lifting block; 16. Third driving part; 17. Sliding beam; 18. Guide beam; 19. Anti-sliding block; 20. Stop column. DETAILED DESCRIPTION

[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the scope of protection of the present application.

[0046] It should be noted that the paper materials applicable to the embodiments of the present utility model may include paper types such as lecture notes, exercise books, leaflets, worksheets, exam answer sheets, study guides, project reports, questionnaires, lecture or event materials, announcements and notices, etc. When used for different paper types, it is applicable not only to schools and educational institutions, but also to various scenarios that require a large number of paper materials to be distributed, such as companies and enterprises, government agencies, medical institutions, reference rooms, scientific research institutions, large conferences and exhibitions.

[0047] According to the deficiencies mentioned in the background art, please refer to Figure 1 as shown in Figure 1 the overall structure diagram of the counting and grouping device for paper materials shown in the present utility model. As Figure 1 shown, the present utility model provides a counting and grouping device for paper materials, including: a support frame 1, on which a support plate 2 is installed, and the support plate 2 is used for placing paper materials; and, installed on the support frame 1: a paper counting mechanism, including a first driving part 3, a suction part and a paper pushing part; wherein, the suction part includes a cam 4 and a suction device 5 connected to the cam 4, and the air inlet of the suction device 5 faces the support plate 2; the paper pushing part includes a synchronous pulley set 6 and a paper pushing rod 7; wherein, the cam 4 and the driving pulley 61 of the synchronous pulley set 6 are coaxially connected to the output shaft of the first driving part 3, the paper pushing rod 7 is connected to the driven pulley 62 of the synchronous pulley set 6, and the cam 4 and the paper pushing rod 7 move synchronously in opposite phases; a paper separating mechanism, including a second driving part 9, a push rod part and a turntable 13; wherein, the push rod part includes a connected push block 11 and a hook 12, the hook 12 is close to the air inlet of the suction device 5, and the push block 11 is connected to the second driving part 9 through a link mechanism 8; wherein, the push rod part initially presses the paper materials.

[0048] Among them, the output shaft of the first driving part 3 rotates, driving the cam 4 and the transmission wheel 61 to rotate, and the cam 4 converts the rotational motion into the up and down reciprocating motion of the suction device 5 with its own contour, and the suction device 5 generates suction to absorb the topmost paper in the paper material on the support plate 2 when moving to the lowest point, and then moves to the highest point; at the same time, the transmission wheel 61 drives the driven wheel 62 to rotate, and the driven wheel 62 drives the lever 7 to rotate to the bottom of the sucked paper, and moves the sucked paper to the top of the hook 12; the second driving part 9 provides torque, and drives the push block 11 and the hook 12 to move close to the turntable 13 through the connecting rod mechanism 8, so as to push the paper to be transferred to the turntable 13; after receiving the paper each time, the turntable 13 rotates around its own rotation center by a preset angle to interleave the previous paper with the next paper.

[0049] Specifically, the support skeleton 1 includes a plurality of crossbeams and longitudinal beams connected and combined to form a truss structure of a certain shape. The shape can be regular or irregular, and is used to support the various components installed thereon, such as part or all of the components in a paper counting mechanism and a paper separating mechanism. Since there are many components supported thereon, the embodiments of the utility model do not specifically specify on which specific crossbeam or longitudinal beam the various components subsequently installed on the support skeleton 1 are installed. Of course, the support skeleton 1 can directly install some components, or indirectly connect some components through connectors or connecting rods, and the specific connection structure will not be repeated. It is only necessary to flexibly select a suitable installation position and design a suitable shape structure without affecting the installation effect and structural stability.

[0050] For example, Figure 2 The overall structural schematic diagram of the support skeleton 1 is shown. In one embodiment, the support skeleton 1 is a special-shaped frame structure formed by 3D printing, which has two long steel pipes 111 extending vertically, and the two long steel pipes 111 are connected at the top by a crossbeam, and a rectangular frame 112 is welded in the middle of the two long steel pipes 111, and a support plate 2 is installed on the rectangular frame 112, and the support plate 2 can also be an irregular shape, and a stack of paper materials can be installed on the support plate 2. A special-shaped chassis frame is arranged below the two long steel pipes 111 to support the entire device, and a circular rotating disk 113 is arranged at one end of the special-shaped chassis frame, and a rotating disk 13 can be installed on the circular rotating disk 113, and a motor is independently installed inside, and the motor drives the rotating disk to drive the rotating disk 13 to rotate at a preset angle.

[0051] Furthermore, if Figure 4 As shown, for a clearer understanding, Figure 4The paper separating mechanism is omitted, and a partial schematic view of the paper counting mechanism located on the support skeleton 1 is shown. A rectangular steel pipe 114 extending horizontally from left to right is designed. The left end part of the rectangular steel pipe 114 is connected to two long steel pipes 111, and the right end part is sleeved with an installation shell. The installation shell is in the shape of a horizontally placed hollow T. The horizontal hollow section is sleeved on the right end of the rectangular steel pipe 114, and the suction fan shell 51 is installed on the lower surface of the horizontal hollow section. A suction device 5, such as a blower, can be accommodated in the suction fan shell 51. A synchronous pulley set 6 is installed in the vertical hollow section. The synchronous pulley set 6 generally includes a driving pulley 61, a synchronous belt, and a driven pulley 62. The driving pulley 61 is connected to the driven pulley 62 through the synchronous belt. The driving pulley 61 is located above in the vertical hollow section, and the driven pulley 62 is located below.

[0052] Specifically, the open end of an inverted U-shaped steel pipe passes through the rectangular steel pipe 114 and is connected to the suction device 5 in the installation shell, and a cam 4 is arranged in the opening, so that the lower surface of the closed end of the inverted U-shaped steel pipe is in movable contact with the contour curve of the cam 4, thereby integrally combining the cam 4 and the suction device 5. Among them, the air inlet of the suction device 5 faces the support plate 2. Therefore, the paper material placed on the support plate 2 is located below the air inlet. When the suction device 5 is started, the suction force acts directly on the paper material, facilitating the suction of the uppermost paper.

[0053] Among them, the cam 4 is in the shape of an elliptical flat. When the inverted U-shaped steel pipe contacts the surface of the cam 4, that is, at this time the elliptical flat is in a horizontal state, the inverted U-shaped steel pipe and the suction device 5 connected thereto are in the lowest position, and the air inlet of the suction device 5 is close to the paper material; when the inverted U-shaped steel pipe contacts the edge of the cam 4, that is, at this time the elliptical flat is in a vertical state, the inverted U-shaped steel pipe and the suction device 5 connected thereto are in the highest position, and the sucked paper is taken away.

[0054] Specifically, the driving end of the first driving part 3 is located on the upper surface of the left end part of the rectangular steel pipe 114 and is located in the area enclosed by the two long steel pipes 111. Its power output shaft extends successively through the central through hole of the cam 4 and the left through hole of the installation shell along the direction parallel to the rectangular steel pipe 114 and is coaxially connected to the driving pulley 61 in the shell. Among them, the driven pulley 62 connected to the driving pulley 61 through the synchronous belt is connected to the lever 7, driving the lever 7 to rotate. The lever 7 is a metal rod that rotates cyclically around a fixed point and is responsible for dialing away the sucked paper.

[0055] In some embodiments, a lifting lug is arranged on the output shaft of the first driving part 3. The lifting lug is installed on the rectangular steel pipe 114 and allows the output shaft to pass through to avoid the rotational offset of the driving shaft.

[0056] Therefore, the paper counting mechanism can achieve the function of counting test papers. The output shaft of the first driving part 3 is connected to the cam 4. When the output shaft rotates, it drives the cam 4 to rotate. The rotational motion of the cam 4 is converted into the reciprocating up and down motion of the suction device 5 through the specific contour shape of the cam 4. When the contour curve of the cam 4 causes the suction device 5 to move downward, air is inhaled to lift a corner of the upper paper in a stack of papers by aerodynamic force. Since the output shaft is also connected to the lever 7 through the synchronous pulley set 6, the driving pulley 61 drives the driven pulley 62 to rotate through the synchronous belt, and the driven pulley 62 is connected to the lever 7, causing the lever 7 to rotate in a reciprocating cycle as the driven pulley 62 rotates.

[0057] Since the suction part and the lever 7 are connected by the synchronous pulley set 6 and perform reciprocating motions in opposite phases. Therefore, in one cycle, when the suction device 5 moves to the lowest point, it sucks up the paper, then moves to the highest point. Then, when the suction device 5 just reaches the highest point, the lever 7 moves to the lowest point and removes the sucked paper. After that, the suction device 5 descends again to suck the paper, while the lever 7 rises to prepare to remove the next piece of paper, thus completing a working cycle, that is, completing the separation and counting of one piece of paper. By repeating this cycle, the number of papers removed per portion can be set as needed. After repeating the cycle multiple times, the separation of one portion / group of papers is completed, and one portion can include one or more pieces of paper.

[0058] It can be understood that the rotational direction of the lever 7 should be opposite to the angle formed between the sucked paper and the remaining paper material. For example, when the paper counting mechanism has counted the number of papers in a group, the upper right corner of this group of papers will be lifted by the suction force of the air inlet. Therefore, an angle facing the rear is formed between the lifted paper and the remaining paper material. When the lever 7 rotates counterclockwise, it just passes through this angle and lifts the lifted paper.

[0059] It can be understood that the first driving part 3 and the second driving part 9 can be connected to a computer. First, the number of papers required for each group is input into the computer. The computer will count according to the total number of papers per portion / group and control and monitor the number of papers sucked by the suction device 5 and the number of rotations of the lever 7 in the paper counting mechanism to separate the target number of papers and obtain a group of test papers at one time. When the set number of papers per portion is reached, the computer will control the second driving part 9 to start working and group the counted test papers in each group.

[0060] As a further illustration of this embodiment, the paper counting mechanism is also equipped with a magnetic sensor installed on the lever 7 for monitoring the number of rotations of the lever 7, and a photoelectric sensor located above the support plate 2 for scanning the picking-up situation of the paper. In this embodiment, in order to conveniently obtain the number of copies separated by the paper counting mechanism, the computer simultaneously receives the situation of the lever 7 picking up the paper and the number of rotations of the lever 7 from the magnetic sensor, as well as the passing situation of the paper scanned by the photoelectric sensor. Through calculation and analysis, the number of papers that the lever 7 has picked up is obtained, so that the paper counting mechanism stops working after counting the specified number of papers.

[0061] It should be noted that when the suction device 5 moves to the highest point, the lever 7 just moves to the lowest point (i.e., the phases are opposite), which can be achieved by designing appropriate parameters such as the transmission ratio of the synchronous belt, the aspect ratio of the length and width of the cam 4 profile, and the inner diameter of the movement of the lever 7.

[0062] Furthermore, as Figure 6 and Figure 7 shown, Figure 6 Figure shows a partial schematic of the paper separating mechanism when it is located on the support frame 1. For a clearer display, Figure 6 the turntable 13 in the paper counting mechanism and the paper separating mechanism is omitted. Figure 7 Continuing to show an exemplary paper separating structure according to some embodiments of the present disclosure, the turntable 13 in the paper separating mechanism is not shown. For the grouping of papers, in the embodiment of the present invention, a paper separating mechanism is designed, which mainly consists of a push rod part, a second driving part 9, and a turntable 13. After the paper counting mechanism counts the number of papers in a group, the upper right corner of this group of papers will be lifted by the suction of the air inlet. One end of the push block 11 is connected to the second driving part 9 through a linkage mechanism 8, and the other end is connected to a hook 12, which can hook the lifted paper corner. At the same time, the push block 11 moves quickly under the action of the second driving part 9, and quickly pushes the counted group of papers onto the turntable 13.

[0063] Preferably, the angle of each rotation of the turntable 13 is 90°, so that adjacent groups of papers are vertically staggered, which is more convenient for the teacher to distribute.

[0064] In this embodiment, the push rod part is located above the support plate 2 and has a distance from the plate surface of the support plate 2. That is to say, when a stack of paper materials is placed on the support plate 2, the push block 11 and the hook 12 just press on the topmost piece of paper. Since the push block 11 has a large plane and is farther from the air inlet than the hook 12, when the air inlet sucks the paper and makes the paper lift up, one lifted corner of the paper is located above the hook 12, and the push block 11 always remains above the topmost piece of paper. Therefore, the hook 12 is just under the lifted corner by the paper counting mechanism, and can smoothly hook the counted paper, so as to ensure that the paper stably falls on the turntable 13 under the drive of the linkage mechanism 8.

[0065] In one realizable manner, the sheet counting mechanism further includes: an anti-slip block 19, which is installed below the sheet counting mechanism and above the support plate 2; the anti-slip block 19 is connected to a fourth driving part, and the anti-slip block 19 is driven by the fourth driving part to be in a folded state when the first driving part 3 starts and in an unfolded state when it stops. In order to prevent the uncounted papers below from being taken away under the action of friction during the process of the push block 11 pushing the counted papers to move, the anti-slip block 19 is arranged near the air suction port. Exemplarily, it is installed on a rectangular steel pipe 114 through a support beam, and the anti-slip block 19 is rotatably installed on the support beam. The anti-slip block 19 can rotate at the installation point. When rotating outwards, it extends out of the support beam. The anti-slip block 19 located at the lower part of the sheet counting mechanism can press the uncounted papers to prevent them from being pushed away together with the push rod due to the friction between the papers; when rotating inwards, it folds to avoid blocking the dial rod 7 from picking up the papers.

[0066] Combined with the above embodiments, when the dial rod 7 picks up the papers, the picked-up papers can freely fall onto the support beam, so that the included angle between the picked-up papers and the unpicked-up papers is enlarged, facilitating the hook 12 to hook the corner of the papers.

[0067] In this way, through the mutual cooperation of the paper separating mechanism and the sheet counting mechanism, and the alternating operation and cooperation of the two, counting and grouping are completed simultaneously, and the papers of each group are arranged in a staggered manner by the rotation of the turntable 13. The function of staggered stacking can be realized by counting from top to bottom in this application. Combined with the air suction part for sucking up the test papers, the paper separating part for separating a specified number of papers, and the push rod part for staggering and placing this portion of papers, automation is realized. Therefore, the user only needs to input the number of papers to be counted and the sorting method, and the machine can automatically complete the counting and sorting of the papers, and directly distribute them to each group of students on-site according to the portions. Thus, there are at least the following many significant improvements:

[0068] 1. It saves the time of teachers and students. Students have more time for learning or reviewing, reducing the workload of teachers in cumbersome affairs, helping to relieve work pressure. Teachers have more time and energy to prepare teaching content, activities and student guidance, thus improving the overall teaching quality and effect;

[0069] 2. This application can sort and manage according to different subjects, grades or classes, which helps to systematize and manage teaching materials in an orderly manner;

[0070] 3. With the development of educational technology, it is an irresistible trend to apply automation and intelligent technologies to the teaching process. This application can improve the modernization level of the teaching environment, promote the development of the educational environment towards a more modern and intelligent direction, not only improving the efficiency and accuracy in the teaching process, but also bringing a better learning and teaching experience for teachers and students.

[0071] 4. The device has a simple structure, effectively saves costs, has extremely low energy consumption, occupies a small area, and expands the user group to general units, schools and even individuals, making it more popular.

[0072] As described above, the support frame 1 can indirectly connect some components through connectors or connecting rods. As an example of this embodiment, the connecting rod mechanism 8 connecting the push block 11 and the support frame 1 includes a parallelogram connecting rod 81, a transition section 82, and a connecting section 83 connected in sequence. The parallelogram connecting rod 81 is located above the support plate 2 and is inclined in the direction of the push block 11 from front to back. The inclined sides are two parallel diagonal rods, and the inclined starting end and the inclined ending end are two parallel vertical rods. The vertical rod at the inclined ending end at the rear is connected to the push block 11, and the vertical rod at the inclined starting end at the front is integrally formed with the connecting section 83 through the transition section 82, and the connecting section 83 is connected to the second driving part 9.

[0073] Among them, the transition section 82 can be understood as a connecting rod member that connects the parallelogram connecting rod 81 to the second driving part 9 through a suitable path and direction, so it can be irregular. The connecting section 83 can be understood as a rod member that is convenient for directly forming a transmission connection with the second driving part 9. For example, it can be designed according to the position of the second driving part 9.

[0074] In some embodiments, the second driving part 9 is connected to the support frame 1 through a metal frame. The second driving part 9 can include a motor and a second synchronous pulley set 6. The structure of the second synchronous pulley set 6 can refer to the above synchronous pulley set 6.

[0075] In another exemplary embodiment, the metal frame includes two inverted U-shaped keels 92 at the front and rear, with the openings facing the bottom, and the length of the horizontal section is greater than the length of the vertical section. The left and right vertical sections of the front keel 92 form an inverted U-shaped space. The transmission wheel of the second driving part 9 can be installed in the left inverted U-shaped space. The transmission wheel is connected by a motor installed on the left vertical section. The transmission wheel of the second driving part 9 can be installed in the right inverted U-shaped space. Therefore, the transmission wheel is connected to the driven wheel through a synchronous belt 91 parallel to and equal in length to the horizontal section.

[0076] Combining the above embodiments, a slot is provided in the connecting section 83 of the connecting rod mechanism 8, and the synchronous belt 91 passes through the slot to connect the push block 11 to the second driving part 9 through the connecting rod mechanism 8.

[0077] In some other embodiments, the metal frame may further include a first guiding structure 93 and a second guiding structure 93. The first guiding structure 93 is disposed above the two inverted U-shaped keels 92 and has a first guiding round rod 931, and the first guiding round rod 931 is also parallel to the synchronous belt 91. The transition section 82 in the link mechanism 8 is slidably sleeved on the first guiding round rod 931. The second guiding structure 93 may be a second guiding round rod 932, and the second guiding round rod 932 passes through the connecting section 83 in the link mechanism 8 and is connected to the left and right vertical sections of a keel 92 at the rear. Therefore, when the push block 11 moves along the moving direction of the synchronous belt 91 driven by the synchronous belt 91 with the link mechanism 8, the link mechanism 8 performs a smooth linear motion under the action of the guiding structure 93, ensuring the stability and accuracy of the paper pushing process and reducing the damage to the paper.

[0078] In some embodiments, the turntable 13 is located below the left side of the support plate 2. The link mechanism 8 moves from right to left along with the synchronous belt 91. Therefore, a spring is disposed on the left side of the first guiding round rod 931 and is in movable contact with the transition section 82 in the link mechanism 8. When the motor is started, the link mechanism 8 moves driven by the synchronous belt 91 and contacts the spring at the end position of the movement, buffering the impact force of the link mechanism 8, thereby reducing the loss of the link mechanism 8 hitting the frame during rapid movement.

[0079] Please refer to Figure 3 , and in combination with Figure 1 , Figure 3 which is the overall structural schematic diagram of the suction nozzle 10. As a further improvement of this embodiment, the suction device 5 includes a blower, the air inlet of the blower is communicated with the suction nozzle 10, the cross section in the middle of the suction nozzle 10 is smaller than the cross sections on both sides, and the end face close to the support plate 2 is inclined. In this embodiment, the suction nozzle 10 is designed to additionally form an air inlet passage with a suitable shape at the air inlet of the blower. The end of the suction nozzle 10 forms a certain angle with the paper surface, and the toughness of the paper can be utilized to suck up a corner of the paper and move upward, separating the top sheet of paper from the papers below, so as to realize sucking up only one sheet of paper at a time.

[0080] The working principle of this embodiment is as follows:

[0081] The suction nozzle 10 uses aerodynamic force, and the inclination angle of the suction nozzle 10 allows the paper to overcome its own stress and bend upwards, and be sucked up. The stress overcome by the bending of the paper is much greater than the force of the paper's gravity, the electrostatic force between the papers, and other forces that will cause multiple sheets of paper to be sucked away at one time. At the same time, the paper has a strong obstruction to the flow of air. When the suction nozzle 10 has sucked a piece of paper, the very small amount of airflow that passes through the gaps between the paper fibers is difficult to generate enough suction for the next piece of paper, and then the next piece of paper cannot overcome its own stress and bend upwards. Therefore, by forming an air inlet at a certain angle between the suction nozzle 10 and the paper surface, the suction device can cleverly suck up only one piece of paper at a time.

[0082] In addition, the interior of the air inlet of the air suction nozzle 10 imitates the structure of a rocket engine nozzle, reducing the cross-sectional area in the middle, thereby increasing the gas flow rate. By utilizing the Bernoulli principle that the greater the gas flow rate, the smaller the pressure, the pressure inside the air inlet is reduced, thereby increasing the suction force of the suction port of the air suction nozzle 10, ensuring that it is sufficient to suck up the paper stably and quickly.

[0083] In some embodiments, the suction device 5 may be a vacuum pump to provide suction.

[0084] In a further technical solution, the lever 7 includes a rotating portion 71 and two toggle rods 72, the rotating portion 71 is connected to the driven wheel 62, the two toggle rods 72 are symmetrically connected to the two ends of the rotating portion 71, and the toggle rods 72 extend horizontally in a direction close to the support plate 2. In combination with the above embodiments, the rotating portion 71 is located on the right side shell wall of the vertical hollow section of the mounting shell, the center of the rotating portion 71 is connected to the driven wheel 62 in the shell through the rotating shaft passing through the mounting shell, and the two ends of the rotating portion 71 are respectively installed with toggle rods 72 facing the left side, and each toggle rod 72 rotates to the bottom to lift each sucked paper. Therefore, when the lever 7 rotates one circle, two sheets of paper can be lifted, and at the same time, the suction device 5 reciprocates up and down twice.

[0085] In a preferred implementation extended from this embodiment, please refer to Figure 5 , Figure 5 It is a three-dimensional structure when the paper counting mechanism, the lifting mechanism and the sliding mechanism are assembled on the support frame 1. The device also includes: a lifting mechanism installed on the support frame 1, including a third driving part 16 and a lifting block 15, wherein the lifting block 15 is sleeved on the outer periphery of the output shaft of the third driving part 16; wherein the lifting block 15 is connected to the paper counting mechanism to drive the paper counting mechanism to move up and down along the output shaft to adjust the distance between the air inlet and the paper material on the support plate 2.

[0086] Specifically, as the paper counting progresses, the remaining uncounted paper materials will become thinner and thinner. Therefore, it is necessary to adjust the position of the air inlet in the paper counting mechanism so that the air inlet of the paper counting mechanism is in a suitable position relative to the paper to be sucked. A support steel pipe can be installed on the rectangular frame 112 in the support skeleton 1, and the top end of the support steel pipe is flush with the long steel pipe 111 of the support skeleton 1. A third driving part 16 is arranged on the top end of the support steel pipe and the top end of the support skeleton 1. The output shaft of the third driving part 16 extends downward parallel to the long steel pipe 111 to the mounting table. The mounting table can be installed at the corner of the rectangular frame 112 and is located within the notch of the irregular support plate 2.

[0087] A lifting block 15 is sleeved on the output shaft of the third driving part 16. The rectangular steel pipe 114 mentioned above is placed on the top surface of the lifting block 15, and the suction device 5, the synchronous pulley group 6, the lever 7, etc. are indirectly installed on the rectangular steel pipe 114. Therefore, when the lifting block 15 moves up and down with the output shaft, it drives the suction device 5 and the suction nozzle 10 to approach or move away from the paper materials on the support plate 2 in the height direction.

[0088] The lifting mechanism can be a lead screw structure, and by using an ultrasonic sensor and a PID algorithm, the paper counting mechanism is always kept within a suitable distance range from the paper surface. The lead screw structure is common knowledge, which converts the rotational motion of the motor into the linear reciprocating motion of the lead screw. By controlling the rotational direction and speed of the motor, the height of the paper counting mechanism can be accurately adjusted. For the sake of clarity and conciseness, the description of well-known functions and structures is omitted in this embodiment.

[0089] The ultrasonic sensor is arranged above the support plate 2 and directly faces the surface of the paper, so that it can continuously monitor the distance between the paper and the air inlet. That is, as the paper is counted and removed, the height of the paper stack will gradually decrease. The ultrasonic sensor can emit and receive ultrasonic signals in the direction of the paper, and transmit the collected distance data to the computer or the third driving part 16 with a built-in control program. The computer uses the PID algorithm to adjust the rotational speed and direction of the motor in real time, so that the air inlet is always kept at a suitable working distance from the paper surface, ensuring that the suction nozzle 10 can accurately suck the paper.

[0090] Combined with the above, the first driving part 3, the second driving part 9, and the third driving part 16 can all select servo motors.

[0091] Further, the lifting block 15 and the paper counting mechanism are respectively connected to the support frame 1 through sliding mechanisms. In this embodiment, multiple beams can also be provided. For example, a sliding beam 17 extending vertically downward from top to bottom is connected to the left side of the rectangular steel pipe 114. The sliding beam 17 is slidably connected to the guide rail on the long steel pipe 111 on the left side. Therefore, when the rectangular steel pipe 114 moves up and down with the lifting block 15, the sliding beam 17 slides on the guide rail to ensure that the lifting block 15 and the paper counting mechanism move smoothly up and down on the support frame 1, preventing the risk of tilting or falling off during the movement. Alternatively, the lifting block 15 is also slidably sleeved on a guide beam 18 installed on the mounting table through a similar sliding guide rail structure.

[0092] In another preferred embodiment extended from this embodiment, the paper separating mechanism further includes: a tray 14, located below the support plate 2 and installed on the link mechanism 8 to move synchronously with the link mechanism 8 and the push rod part. In this embodiment, the tray 14 can be in an E-shaped structure, horizontally placed, facing the support plate 2 to form a supporting space. The middle cross beam is connected to the connecting section 83 in the link mechanism 8 and is adjacent to the synchronous belt 91 also located on the connecting section 83. The cross beams on both sides can be suspended. Therefore, when the link mechanism 8 moves from right to left along with the synchronous belt 91, it drives the tray 14 to move synchronously to extend out of the support plate 2 to catch a sheet of paper pushed out by the push block 11, preventing the paper from shifting in position due to excessive speed when falling.

[0093] Preferably, please continue to refer to Figure 8 , Figure 8 is the overall view with the anti-slip block 19 and the stop post 20. The specific structure of the second driving part 9 is not shown therein, but it can be obtained in other drawings or descriptions. A stop post 20 is installed below the support plate 2. Specifically, the stop post 20 can be installed on two adjacent beam frames on the left side in the quasi-rectangular frame 112, and the bottom projection is located within the bottom projection of the support plate 2 to prevent the paper on the support plate 2 from being blocked by the stop post 20 during the process of falling downward. Therefore, when the tray 14 withdraws from left to right, the paper is held against by the stop post 20 to prevent the paper from shifting in position directly due to the frictional force between the tray 14 and the paper. Through the design of the tray 14 and the stop post 20, after the counted paper accurately falls onto the turntable 13, the turntable 13 rotates to stagger each group of papers, thereby achieving the purpose of grouping the papers.

[0094] In summary, the usage steps of the device provided in this application are as follows:

[0095] Taking the Second High School Affiliated to Beijing Normal University as an example, a teacher has a class of 39 students sitting in 6 columns in the classroom. There are 7 students in the first 3 columns and 6 students in the last 3 columns. She needs to distribute a certain kind of test paper to each student in the class. So, first, it is set in the computer control program that the test paper sheets will be divided into 6 groups, with 7 sheets in each of the first 3 groups and 6 sheets in each of the last 3 groups. Then the device is started. After initialization is completed, the paper counting mechanism starts to count 7 sheets of the first group. After counting, the paper distributing mechanism pushes this group of papers onto the turntable 13, and then the turntable 13 rotates 90°. Then the paper counting mechanism starts to count the second group of papers, and the paper distributing mechanism pushes the second group of papers onto the turntable 13. In this way, the second group of papers is offset by 90° from the first group of papers. And so on until all 6 groups of papers are counted. The teacher can directly pick up the distributed test papers from the turntable and distribute them to the students group by group directly.

[0096] Therefore, it is applicable to the separation and grouping of various papers, and is especially suitable for the grouping and distribution of test papers in various schools and examination institutions. Users only need to input the number of papers to be counted and the way of dividing, and the machine can automatically complete the counting and dividing of papers, greatly improving the efficiency.

[0097] It should be noted that each embodiment in this specification is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other.

[0098] It also needs to be noted that in this article, the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation to the present invention. In addition, relative terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations, nor can they be understood as indicating or implying relative importance. Moreover, the term "comprises" or any other variant thereof is intended to cover a non-exclusive inclusion, so that a process, method, article or terminal device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or terminal device.

[0099] The above has introduced in detail a counting and grouping device for paper materials provided by the present application. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the present application, and the content of this specification should not be construed as a limitation on the present application. At the same time, for those of ordinary skill in the art, based on the present application, there will be various forms of changes in the specific implementation manner and application scope. It is not necessary and impossible to enumerate all the implementation manners here, and the obvious changes or variations derived therefrom still fall within the protection scope of the present application.

Claims

1. A counting and grouping device for paper materials, characterized in that, include: A support frame is provided with a support plate, wherein the support plate is used for placing paper materials; And, mounted on the support frame: The paper counting mechanism comprises a first driving unit, an air suction unit and a paper shifting unit; wherein the air suction unit comprises a cam and a suction device connected to the cam, and the air inlet of the suction device faces the support plate; the paper shifting unit comprises a synchronous pulley set and a shifting rod; wherein, The cam and the driving wheel of the synchronous pulley set are coaxially connected to the output shaft of the first driving part, the shifting rod is connected to the driven wheel of the synchronous pulley set, and the cam and the shifting rod move synchronously in opposite phases; The paper separation mechanism comprises a second driving part, a push rod part and a rotating disk; wherein the push rod part comprises a push block and a hook connected to each other, the hook is close to the air inlet of the suction device, and the push block is connected to the second driving part through a connecting rod mechanism; wherein the push rod part initially presses the paper material; The output shaft of the first driving unit rotates, driving the cam and the transmission wheel to rotate. The cam converts the rotational motion into the up and down reciprocating motion of the suction device with its own profile. The suction device generates suction to absorb the topmost paper of the paper material on the support plate when it moves to the lowest point, and then moves to the highest point. At the same time, the transmission wheel drives the driven wheel to rotate, and the driven wheel drives the lever to rotate to the bottom of the sucked paper, and moves the sucked paper to the top of the hook. The second driving part provides torque to drive the push block and the hook to move close to the rotating disk through the connecting rod mechanism, so as to push the paper to be transferred to the rotating disk; After receiving the paper each time, the rotating disk rotates around its own rotation center by a preset angle to interleave and group the previous paper with the next paper.

2. The counting and grouping device for paper materials according to claim 1, wherein The suction device comprises a blower, an air inlet of the blower is connected with an air suction nozzle, a middle cross section of the air suction nozzle is smaller than cross sections on both sides, and the air suction nozzle is inclined close to the end surface of the support plate.

3. The counting and grouping device for paper materials according to claim 1, wherein The shifting rod comprises a rotating part and two shifting rods, the rotating part is connected to the driven wheel, the two shifting rods are symmetrically connected to the two ends of the rotating part, and the shifting rods extend horizontally toward the direction close to the support plate.

4. A counting and grouping device for paper materials according to claim 1, characterized in that, The second driving part includes a motor and a second synchronous pulley set, the push block is connected to the synchronous belt of the second synchronous pulley set through the connecting rod mechanism, and the moving direction of the synchronous belt is the direction approaching the turntable.

5. The counting and grouping device for paper materials according to claim 1, characterized in that The device also includes: mounted on the support frame: The lifting mechanism comprises a third driving part and a lifting block, wherein the lifting block is sleeved on the outer circumference of the output shaft of the third driving part; The lifting block is connected to the paper counting mechanism to drive the paper counting mechanism to move up and down along the output shaft to adjust the distance between the air inlet and the paper material on the support plate.

6. The counting and grouping device for paper materials according to claim 5, characterized in that, The lifting block and the paper counting mechanism are respectively connected to the supporting frame through sliding mechanisms.

7. A counting and grouping device for paper materials according to claim 1, characterized in that, The paper separation mechanism also includes: The tray is located below the support plate and is mounted on the connecting rod mechanism so as to move synchronously with the connecting rod mechanism and the push rod part.

8. A counting and grouping device for paper materials according to claim 7, characterized in that, The sheet separating mechanism further includes: A stop post, which is installed on the support skeleton, and the stop post is located below the edge of the support plate adjacent to the turntable.

9. The counting and grouping device for paper materials according to claim 1, characterized in that, The sheet counting mechanism further includes: An anti-slip block, which is installed below the sheet counting mechanism and above the support plate; The anti-slip block is connected with a fourth driving part, and the anti-slip block is driven by the fourth driving part to be in a folded state when the first driving part starts and in an unfolded state when it stops.

10. A counting and grouping device for paper materials according to claim 1, characterized in that, The device further includes: A magnetic sensor, which is installed on the dial rod and used to monitor the number of rotation circles of the dial rod; An optoelectronic sensor, which is located above the support plate and used to scan the picking-up situation of the paper; An ultrasonic sensor, which is located above the support plate and used to measure the distance between the air inlet and the paper material.

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