Anti-deviation mechanism of examination question card counting instrument
By introducing an anti-drift mechanism into the test question card counter, using shrapnel and roller assemblies to prevent the paper from shifting when unfolding, and combining an electric servo and push rod motor to control the paper unfolding, the problem of excessive displacement of paper in the question card slot is solved, and the accuracy and efficiency of counting are improved.
Patent Information
- Application Number
- CN202423061832.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2034-12-12
AI Technical Summary
Existing examination question card counters are not provided with a component to inhibit paper from unfolding, which causes excessive displacement of paper in the question card slot, affecting effective counting.
An anti-drift mechanism was designed, which included a bracket unit, a placement unit, an unfolding unit, and an auxiliary unit. Shrapnel and roller assemblies were used to prevent excessive displacement of paper during unfolding. The unfolding and fixation of the paper were controlled by an electric servo and a push rod motor, and image processing was performed in combination with a camera.
It effectively prevents paper from shifting during the unfolding process, ensures the accuracy and efficiency of counting, especially for the unfolding and counting of large papers, and improves the automation level of the answer sheet counter.
Smart Images
Figure CN223422062U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of education, in particular to an anti-deviating mechanism of an examination question card counter. Background Art
[0002] In most existing exams, answers are generally filled in on answer sheets, which need to be counted after collection. The current method of counting answer sheets after the exam still relies on people counting the number of papers one by one, which will undoubtedly lead to slower efficiency and the possibility of counting errors.
[0003] The current market research on paper counting is still stuck at weighing or manual counting. Manual counting usually requires two hands. The first hand bends the paper and then pinches it and folds it back. The unfolded part is fixed with the second hand. This method has limitations and may cause errors due to external influences. With the development of technology, test paper counters have emerged. It can automatically and evenly unfold the paper and take pictures of the edges of the paper for image collection and processing. It performs grayscale recognition through a designed algorithm. The instrument for measuring the number of papers is equipped with a power adapter and battery box, and can be used with both AC and DC power.
[0004] Some existing test card counters do not have a component to inhibit paper unfolding, which causes excessive displacement of paper in the test card slot. As a result, the paper often pops out of the test card slot before the edge of the paper is unfolded, affecting the effective counting of the paper. Utility Model Content
[0005] In response to the deficiencies in the prior art, the utility model provides an anti-drift mechanism for an examination question card counter, which solves the problem that some examination question card counters are not provided with a component to inhibit paper unfolding, resulting in excessive displacement of paper in the question card slot, and thus causing the paper to pop out of the question card slot before the edge of the paper is unfolded during the unfolding process, thus affecting the effective counting of the paper.
[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: an anti-drift mechanism of an examination question card counter comprises a bracket unit and a placement unit, the placement unit is mounted on the bracket unit, and an expansion unit is provided on one side of the placement unit;
[0007] The bracket unit includes a frame base, a connecting frame, a frame, a steering gear seat and a spring fixing piece, wherein the connecting frame is provided at one end of the frame base, one end of the frame is plugged into the top of the connecting frame, the steering gear seat is installed at the other end of the frame, and the spring fixing piece is installed at the top of the other end of the frame;
[0008] The unfolding unit includes a roller assembly and an elastic sheet. The roller assembly is arranged on one side of the elastic sheet, and the top of the elastic sheet is installed on an elastic sheet fixing piece.
[0009] Preferably, the bracket unit further includes a support frame, a baffle seat and a tripod, the support frame is arranged at the other end of the rack base, the baffle seat is installed on the top of the support frame, and the tripod is used to connect the rack base with the connecting frame and the support frame with the rack base.
[0010] Preferably, the placement unit includes an electric servo, a question card slot and a connecting seat, the electric servo is installed on the servo seat, the top of the question card slot is installed on the electric servo, and the connecting seat is fixedly connected to the side of the question card slot.
[0011] Preferably, the unfolding unit also includes a first fixed plate, a first push rod motor, a chuck, a second fixed plate and a second push rod motor, the first fixed plate is installed on the inner side of the support frame, the first push rod motor is installed on the first fixed plate, the chuck is fixedly connected to the output end of the first push rod motor, the second fixed plate is arranged on one side of the placement unit, and the second push rod motor is installed on the second fixed plate.
[0012] Preferably, the spring piece abuts against the test question card.
[0013] The utility model discloses an anti-deviating mechanism for an examination question card counter, which has the following beneficial effects: by installing the top of a spring sheet on a spring sheet fixing part and arranging the spring sheet and a roller assembly to cooperate, the paper is prevented from excessively shifting out of the question card slot when unfolding, that is, when the paper is unfolded, it often pops out of the question card slot before the edge of the paper is unfolded. Since the spring sheet is fixed and locked and will not deviate, when the question card slot rotates, the answer sheet and the spring sheet will bend, and when rotating back, the roller presses the paper and the spring sheet, so that the paper and the spring sheet are fixed together, and the spring sheet is fixed and will not shift upward, which can ensure that the paper will not deviate significantly out of the question card slot. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0015] Figure 1 This is a schematic diagram of the structure of the utility model;
[0016] Figure 2 This is a schematic diagram of the structure of the bracket unit of the utility model;
[0017] Figure 3 This is a schematic diagram of the placement unit structure of the utility model;
[0018] Figure 4 This is a schematic diagram of the structure of the expansion unit of the utility model;
[0019] Figure 5 This is a schematic diagram of the structure of the roller assembly of the utility model;
[0020] Figure 6 This is a schematic diagram of the auxiliary unit structure of the utility model;
[0021] Figure 7 This is a schematic diagram of the support unit structure of the utility model.
[0022] In the figure: 1. Bracket unit; 11. Frame base; 12. Connecting frame; 13. Frame; 14. Servo seat; 15. Spring clip fixing member; 16. Support frame; 17. Baffle seat; 171. Clamping seat; 18. Tripod; 2. Placement unit; 21. Electric servo; 22. Question card slot; 23. Connecting block; 3. Deployment unit; 31. First fixing plate; 32. First push rod motor; 33. Clamping head; 34. Second fixing plate; 35. Second push rod motor; 36. Roller assembly; 361. Moving seat; 362. Roller; 363. Bearing; 37. Shrapnel; 4. Auxiliary unit; 41. Mounting plate; 42. Camera seat; 421. Mounting slot; 43. Lamp plate; 431. Through hole; 44. Lamp holder; 5. Support unit; 51. Front curved plate; 52. Front baffle; 53. Rear curved plate; 54. Rear baffle; 55. Connecting seat; 56. Block. DETAILED DESCRIPTION
[0023] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.
[0024] The embodiment of the utility model discloses an anti-deviating mechanism of an examination question card counter.
[0025] According to the attached Figure 1-7 As shown, it includes a bracket unit 1 and a placement unit 2, the placement unit 2 is installed on the bracket unit 1, an expansion unit 3 is provided on one side of the placement unit 2, an auxiliary unit 4 is provided on one side of the expansion unit 3, and a support unit 5 is provided above the placement unit 2.
[0026] Furthermore, the bracket unit 1 includes a frame base 11, a connecting frame 12, a frame 13, a servo seat 14, a spring fixing member 15, a support frame 16, a baffle seat 17 and a tripod 18. The connecting frame 12 is arranged at one end of the frame base 11, one end of the frame 13 is plugged into the top of the connecting frame 12, the servo seat 14 is installed at the other end of the frame 13, the spring fixing member 15 is installed at the top of the other end of the frame 13, the support frame 16 is arranged at the other end of the frame base 11, the baffle seat 17 is installed on the top of the support frame 16, and the tripod 18 is used to connect the frame base 11 with the connecting frame 12 and the support frame 16 with the frame base 11.
[0027] It is particularly disclosed that the placement unit 2 includes an electric servo 21, a question card slot 22 and a connecting block 23. The electric servo 21 is installed on the servo seat 14, and the top of the question card slot 22 is installed on the electric servo 21. The inner middle part of the question card slot 22 is a hollow design, and the connecting block 23 is fixedly connected to the side of the question card slot 22. When the answer sheet is placed in the question card slot 22, the rotation of the electric servo 21 can drive the question card slot 22 and the answer sheet therein to rotate so that the paper is evenly unfolded, and the middle of the side of the question card slot 22 is hollow. When the machine unfolds the paper, the camera will take a picture from here for image processing.
[0028] Specifically disclosed, the unfolding unit 3 includes a first fixed plate 31, a first push rod motor 32, a chuck 33, a second fixed plate 34, a second push rod motor 35, a roller assembly 36 and a spring 37. The first fixed plate 31 is installed on the inner side of the support frame 16, the first push rod motor 32 is installed on the first fixed plate 31, the chuck 33 is fixedly connected to the output end of the first push rod motor 32, the second fixed plate 34 is installed on the connecting block 23 through the tripod 18, the second push rod motor 35 is installed on the second fixed plate 34, and the roller assembly 36 is arranged at the output end of the second push rod motor 35.
[0029] Specifically disclosed, the roller assembly 36 includes a moving seat 361, a roller 362 and a bearing 363. The moving seat 361 is fixedly connected to the output end of the second push rod motor 35. The roller 362 is rotatably connected to the moving seat 361. The roller 362 is against the answer sheet, and the roller 362 is rollingly connected to the answer sheet. By setting the roller 362, the paper can achieve a better unfolding effect in the unfolding degree. The bearings 363 are set on both sides of the moving seat 361, and the two ends of the roller 362 are connected to the bearings 363. When the answer sheet slot is opened, the roller 362 is rotated. After 22 rotates, the second push rod motor 35 drives the moving seat 361 to move toward the answer sheet, and then drives the roller 362 to move toward the answer sheet, so that the roller 362 presses the answer sheet against the answer sheet and slowly unfolds the bottom of the answer sheet. After the unfolding is completed, the first push rod motor 32 drives the clamp 33 to move toward the question card slot 22, so that the clamp 33 presses against the top of the answer sheet and fixes the paper that has been unfolded above. Then the question card slot 22 rotates back to its original position, and the second push rod motor 35 drives the moving seat 361 and the roller 362 to move in the opposite direction.
[0030] It is particularly disclosed that the top of the spring piece 37 is installed on the spring piece fixing part 15. By setting the spring piece 37, the answer sheet is prevented from excessively displacing outside the question card slot 22 when it is unfolded, that is, when the paper is unfolded, it often pops out of the question card slot 22 before the edge of the paper is unfolded. Since the spring piece 37 is fixed and locked, it will not deviate. When the question card slot 22 rotates, the answer sheet and the spring piece 37 will bend. When it rotates back, the roller 362 presses the answer sheet and the spring piece 37, so that the answer sheet and the spring piece 37 are fixed together. The spring piece 37 is fixed and will not move upward, which can ensure that the paper will not deviate significantly outside the question card slot 22.
[0031] It is particularly disclosed that the auxiliary unit 4 includes a mounting plate 41, a camera seat 42, a lamp plate 43 and a lamp tube seat 44. The mounting plate 41 is installed at the bottom of the support frame 16. The camera seat 42 is fixedly connected to the mounting plate 41, and a mounting groove 421 is provided on the camera seat 42. The lamp plate 43 is fixedly connected to the camera seat 42, and a through hole 431 is opened on the lamp plate 43. The lamp tube seat 44 is arranged on the back of the lamp plate 43.
[0032] It should be noted that a camera is installed in the installation slot 421, and the position of the camera is aimed at the hollow part of the question card slot 22. When the machine unfolds the paper, the camera can take a picture and send it to the program for image processing to obtain the number of papers. The lamp is installed in the lamp holder 44, and the light shines along the through hole 431 to the camera position. The function of the light is to make the picture clearer when taking pictures, and the light cannot be parallel to the question card slot 22 when filling in the light. The light needs to be irradiated from top to bottom. Since the black line on the edge of the paper when it is unfolded is the shadow of the overlap of the edge and the paper, the problem of no shadow between the papers and the inability to count is avoided by filling in the light from bottom to top, so that the light must be irradiated from top to bottom to get a clearer photo.
[0033] It's important to note that due to certain physical defects in the answer sheet slot 22, the last sheet of paper cannot be unfolded when measuring larger sheets. Therefore, when the machine takes the final photo, the answer sheet slot 22 is not perpendicular to the ground, but tilted 30 degrees clockwise. This facilitates the unfolding of the last sheet of paper and greatly improves the accuracy of the answer sheet counter. The camera needs to be parallel to the answer sheet slot 22 when taking the photo. The camera is tilted at the same angle as the answer sheet slot 22 to ensure that the camera and the answer sheet are parallel when taking the photo.
[0034] Furthermore, a holder 171 is provided on the spring fixing member 15 and the baffle seat 17, and the clamping block 56 is clamped in the holder 171. Through the snap-fit design, the front baffle 52 and the rear baffle 54 are easy to install and remove, thereby improving the overall flexibility of use.
[0035] Furthermore, the support unit 5 includes a front curved plate 51, a front baffle 52, a rear curved plate 53, a rear baffle 54, a connecting seat 55 and a clamping block 56. The front curved plate 51 is connected to the front baffle 52 through the connecting seat 55, and the rear curved plate 53 is connected to the rear baffle 54 through the connecting seat 55. The connecting seat 55 is set on the side of the front baffle 52 and the rear baffle 54, and the clamping block 56 is set at the bottom of the front baffle 52 and the rear baffle 54. By setting the support unit 5, when unfolding large paper such as A3 paper, only the front baffle 52 and the rear baffle need to be connected. The card block 56 at the bottom end of the plate 54 is respectively connected to the spring fixing part 15 and the card seat 171 of the baffle seat 17, so that the large paper can be supported first, and then the paper can be better unfolded. By connecting the top of the front baffle 52 and the rear baffle 54 to the front curved plate 51 and the rear curved plate 53 respectively, the opening of the support baffle is made funnel-shaped, so that large paper such as A3 paper can quickly enter the question card slot 22 after being arranged, which is convenient for automatic unfolding of the paper, thereby improving the unfolding efficiency and unfolding quality of large paper such as A3 paper.
[0036] Working principle: First, put the answer sheet into the question card slot 22, start the electric servo 21, drive the question card slot 22 to rotate, and then drive the answer sheet to rotate. At this time, the answer sheet and the spring 37 will bend. Then the second push rod motor 35 drives the moving seat 361 to move toward the answer sheet, and then drives the roller 362 to move toward the answer sheet, so that the roller 362 will press the answer sheet against the answer sheet, so that the question card slot 22 rotates back to its original position. During the returning process, the roller 362 presses the answer sheet and the spring 37, so that the answer sheet and the spring 37 are fixed. Together, and the spring piece 37 is fixed and will not move upward, which can ensure that the paper will not deviate significantly outside the question card slot 22, and the bottom of the answer sheet will slowly unfold. After the unfolding is completed, the first push rod motor 32 drives the clamp 33 to move toward the question card slot 22, so that the clamp 33 is fixed against the top of the answer sheet, so that the paper that has been unfolded above is fixed, and then the second push rod motor 35 drives the moving seat 361 and the roller 362 to move in the opposite direction, so that the second push rod returns to its position, and the above unfolding action is repeated.
[0037] When large paper sheets need to be counted, the clamping blocks 56 at the bottom ends of the front baffle 52 and the rear baffle 54 are respectively clamped in the spring fixing member 15 and the clamping seat 171 of the baffle seat 17, so that the large paper sheets can be supported first, and then the subsequent paper sheets can be unfolded.
[0038] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.
Claims
1. An anti-drift mechanism for an examination question card counter, comprising a bracket unit (1) and a placement unit (2), wherein the placement unit (2) is mounted on the bracket unit (1), and is characterized in that: An unfolding unit (3) is provided on one side of the placement unit (2); The bracket unit (1) includes a frame base (11), a connecting frame (12), a frame (13), a steering gear seat (14) and a spring fixing member (15), wherein the connecting frame (12) is provided at one end of the frame base (11), one end of the frame (13) is plugged into the top of the connecting frame (12), the steering gear seat (14) is installed at the other end of the frame (13), and the spring fixing member (15) is installed at the top of the other end of the frame (13); The unfolding unit (3) comprises a roller assembly (36) and a spring (37), wherein the roller assembly (36) is arranged on one side of the spring (37), and the top of the spring (37) is mounted on the spring fixing member (15).
2. The anti-drift mechanism of the examination question card counter according to claim 1, characterized in that: The bracket unit (1) further comprises a support frame (16), a baffle seat (17) and a tripod (18), wherein the support frame (16) is arranged at the other end of the rack base (11), the baffle seat (17) is mounted on the top of the support frame (16), and the tripod (18) is used for connecting the rack base (11) and the connecting frame (12) and the support frame (16) and the rack base (11).
3. The anti-drift mechanism of the examination question card counter according to claim 1, characterized in that: The placement unit (2) comprises an electric servo (21), a question card slot (22) and a connecting seat (23); the electric servo (21) is mounted on the servo seat (14); the top of the question card slot (22) is mounted on the electric servo (21); and the connecting seat (23) is fixedly connected to the side of the question card slot (22).
4. The anti-drift mechanism of the examination question card counter according to claim 1, characterized in that: The unfolding unit (3) further comprises a first fixing plate (31), a first push rod motor (32), a clamp (33), a second fixing plate (34) and a second push rod motor (35), wherein the first fixing plate (31) is mounted on the inner side of the support frame (16), the first push rod motor (32) is mounted on the first fixing plate (31), the clamp (33) is fixedly connected to the output end of the first push rod motor (32), the second fixing plate (34) is arranged on one side of the placement unit (2), and the second push rod motor (35) is mounted on the second fixing plate (34).
5. The anti-drift mechanism of the examination question card counter according to claim 1, characterized in that: The roller assembly (36) includes a movable seat (361), a roller (362) and a bearing (363). The movable seat (361) is fixedly connected to the output end of the second push rod motor (35). The roller (362) is rotatably connected to the movable seat (361). The bearing (363) is arranged on both sides of the movable seat (361). Both ends of the roller (362) are connected to the bearing (363).
6. The anti-drift mechanism of the examination question card counter according to claim 1, characterized in that: The shrapnel (37) abuts against the examination question card.