Drawing device for mathematical modeling

Abstract

The invention relates to a drawing device for mathematical modeling, which is characterized in that a peripheral sliding groove is formed in the top surface of a cover plate on the outer side of a drawing area groove, a sliding block is clamped in the peripheral sliding groove, a peripheral sliding scale is mounted on the sliding block, and a paper clamping groove is formed between a drawing paper supporting platform and the bottom surface of the cover plate; a longitudinal limiting groove is formed in the portion, on the inner side of the paper clamping groove, of the drawing paper supporting platform, a paper lifting clamping fixing block matched with the bottom of the cover plate is installed in the longitudinal limiting groove, a bolt is installed in the center of the paper lifting clamping fixing block in a matched mode, and the bottom of the bolt is fixedly connected with the output end of a micro motor installed on the bottom face of the drawing box. Automatic paper feeding and discharging mechanisms are arranged on the left side and the right side of the paper clamping groove. Paper can be automatically fed and discharged, the modeling and drawing work precision is high, the overall automation degree is high, and convenience and high efficiency are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of drawing equipment, and in particular to a drawing device for mathematical modeling. Background Art

[0002] Drawing equipment can assist users in modeling and drawing in the process of mathematical modeling. Mathematical modeling drawing plays an important role in the process of mathematical modeling. Mathematical modeling drawing can intuitively display complex problems and help people better understand the essence of the problem. Through modeling drawing, the relationship between variables can be clearly displayed, making the problem more intuitive and easy to understand, and practical problems can be converted into mathematical language, making it easier to establish mathematical models and solve them. Through modeling drawing, problems can be better analyzed, key points and breakthroughs for solving problems can be found, and finally, through graphical analysis, the changing trends and influencing factors of the problem can be more intuitively seen, so as to develop more effective solutions.

[0003] The following problems are often encountered in the traditional mathematical modeling and drawing process: First, at the beginning of the drawing work, it is necessary to lay out the drawing paper and ensure the flatness and stability of the drawing paper to provide a stable working surface for the later drawing work. The traditional way is to use objects to fix the four corners of the drawing paper. This method often causes defects such as paper movement, curling, or failure to maintain reference parallelism during the drawing process. Secondly, rulers are often used for line drawing and reference measurement during the drawing process. The ruler lacks stable support, which causes the ruler to move or slide during the drawing process, resulting in displacement of reference points and lines, which ultimately affects the drawing accuracy. Thirdly, on-site drawing work is often required during the modeling and drawing process. When conducting on-site drawing work in different venues, it is necessary to deal with complex external environments. Affected by external working environment factors, only a simple flat bracket support cannot meet the various needs of paper laying, paper fixation and stability, and stable drawing measurement during the drawing process, reducing work efficiency.

[0004] Therefore, the present invention provides a drawing device for mathematical modeling that is easy to carry, has strong mobility, can realize automatic feeding and laying of drawing paper and taking out of drawing paper, has strong stability after laying the drawing paper, is firmly fixed, has high overall flatness, provides a variety of stable combined drawing aids, has flexible and diverse support methods, has a high degree of automation, and helps to improve drawing accuracy. The device has broad market prospects. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a drawing device for mathematical modeling that is easy to carry, has strong mobility, can realize automatic paper feeding and laying and paper removal of drawing paper, has strong stability after laying, is firmly fixed, has high overall flatness, provides a variety of stable combined drawing aids, has flexible and diverse support methods, has a high degree of automation, and helps to improve drawing accuracy, so as to overcome the defects in the prior art.

[0006] The technical solution of the present invention is achieved as follows: a drawing device for mathematical modeling, comprising a drawing box, a cover plate fixedly installed on the top surface of the drawing box, a drawing area groove being provided on the cover plate, a scale identification layer being provided on the outer edge of the drawing area groove, a drawing paper support platform being provided at the bottom of the drawing area groove, a horizontal transverse sliding ruler and a horizontal longitudinal sliding ruler being movably clamped on the inner wall of the drawing area groove from top to bottom, an outer sliding groove being provided on the top surface of the cover plate outside the drawing area groove, a slider being clamped in the outer sliding groove, a outer sliding ruler being installed on the slider, a paper clamping groove being provided between the drawing paper support platform and the bottom surface of the cover plate, a longitudinal limiting groove being provided on the drawing paper support platform inside the paper clamping groove, a paper lifting and clamping fixing block matching with the bottom of the cover plate being installed in the longitudinal limiting groove, a bolt being provided at the center position of the paper lifting and clamping fixing block, the bottom of the bolt being fixedly connected to the output end of a micro motor installed on the bottom surface of the drawing box, and automatic paper feeding and discharging mechanisms being provided on the left and right sides of the paper clamping groove.

[0007] Furthermore, the automatic paper feeding and discharging mechanism includes a paper feed port and a paper outlet respectively arranged on the left and right sides of the drawing box, and a paper feed cavity and a paper outlet cavity respectively arranged on the left and right sides of the drawing paper support platform, the paper feed cavity is provided with a paper feed driven roller and a paper feed active roller which cooperate with the paper feed port, one end of the paper feed active roller is meshed with the paper feed active gear through the paper feed driven gear, and the paper feed active gear is connected to the output end of the paper feed motor, the paper outlet cavity is provided with a paper outlet driven roller and a paper outlet active roller which cooperate with the paper outlet, one end of the paper outlet active roller is meshed with the paper outlet active gear through the paper outlet driven gear, and the paper outlet active gear is connected to the output end of the paper outlet motor, and a controller is installed at the front end of the drawing box, and the controller is connected to the paper feed motor, the paper outlet motor and the micro motor through wires.

[0008] Furthermore, a rotating support leg is installed at the bottom of the drawing box through a connecting piece, and the rotating support legs are respectively installed on the left and right sides or the front and rear sides of the bottom of the drawing box. The drawing area groove is a square groove structure, and mutually symmetrical upper slide grooves are opened on the left and right inner walls of the drawing area groove, and mutually symmetrical lower slide grooves are opened on the front and rear inner walls of the drawing area groove below the upper slide grooves. The two ends of the horizontal longitudinal sliding ruler are respectively clamped in the two upper slide grooves, and the two ends of the horizontal transverse sliding ruler are respectively clamped in the two lower slide grooves.

[0009] Furthermore, the horizontal transverse sliding ruler and the horizontal longitudinal sliding ruler are respectively provided with a horizontal transverse perspective through hole groove and a horizontal longitudinal perspective through hole groove, the bottom of the horizontal longitudinal sliding ruler contacts the top of the horizontal transverse sliding ruler, and the bottom of the horizontal transverse sliding ruler cooperates with the top surface of the paper card slot.

[0010] Furthermore, the peripheral sliding ruler is a long strip structure that can rotate freely along the direction of the slider, and the length of the peripheral sliding ruler is not less than the length of the diagonal line connecting the drawing area slots.

[0011] Optionally, paper upper pressure plates are provided on both the front and rear sides of the paper clamping groove, and a pressure-bearing top plate that matches the top surface of the paper lifting and clamping fixing block is fixedly installed at the inner center position of the paper upper pressure plate, the top of the pressure-bearing top plate is fixedly connected to the bottom surface of the cover plate, and the top surface and bottom surface of the paper upper pressure plate are respectively connected to the cover plate and the drawing paper support platform.

[0012] Furthermore, the paper inlet and paper outlet are arranged in the same plane, the horizontal center line of the paper inlet and the horizontal center line of the paper clamping slot are in the same plane, and a paper feed gap is arranged between the paper feed driven roller and the paper feed active roller, and the paper feed gap and the horizontal center line of the paper clamping slot are in the same plane.

[0013] Furthermore, the horizontal center line of the paper outlet is in the same plane as the horizontal center line of the paper clamping slot, and a paper outlet gap is provided between the paper outlet driven roller and the paper outlet active roller, and the paper outlet gap is in the same plane as the horizontal center line of the paper clamping slot.

[0014] Furthermore, the controller is provided with a paper feed button, a paper output button and a paper fixing button, and the paper feed driven roller, the paper feed active roller, the paper output driven roller and the paper output active roller are all provided with an anti-slip layer, and the controller is connected to a rechargeable battery pack installed inside the drawing paper support platform through a wire.

[0015] The present invention has the following positive effects: 1. The present invention provides a drawing device dedicated to mathematical modeling, which uses a drawing box that can be flexibly moved and conveniently carried as a carrier, opens a drawing area slot used for drawing on the top of the drawing box, and lays drawing paper on the bottom of the drawing area slot to implement drawing operations. A sliding ruler that can move horizontally and vertically is used to draw markings, starting points, line segments, lines and other elements during the drawing operation, and cooperates with a scale identification layer and a peripheral sliding ruler to achieve high-precision operation of modeling and drawing operations.

[0016] 2. The present invention can realize automatic laying after adding drawing paper from one side of the paper inlet, feed the added drawing paper smoothly through the paper feed driven roller and the paper feed active roller, and accurately deliver it to the paper clamping groove, and drive the bolt to rotate through the micro motor to further move the paper lifting clamping fixed block upward from the bottom of the longitudinal limit groove, so as to clamp and fix the edge position of the laid drawing paper, ensure the flatness and stability of the paper when the drawing operation is running, and after the drawing is completed, the paper is output through the paper outlet under the clamping action of the paper output driven roller and the paper output active roller, with a high overall degree of automation, convenient and efficient.

[0017] 3. This product is suitable for use in different working conditions. It can quickly and efficiently complete the laying of drawing paper in different environments, and fix the corners of the drawing paper in an automated way, which helps to improve the effectiveness of on-site drawing and provide a dedicated portable device for modeling and drawing under special working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the top structure of the present invention.

[0019] Figure 2 It is a bottom view structural schematic diagram of the present invention.

[0020] Figure 3 It is a side structural schematic diagram of the present invention.

[0021] Figure 4 It is a schematic diagram of the internal top view structure of the present invention.

[0022] Figure 5 It is a schematic diagram of the main internal structure of the present invention.

[0023] Figure 6 It is a left-side internal structure schematic diagram of the present invention.

[0024] Figure 7 It is a schematic diagram of the internal structure of the present invention from the right side. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0026] In the following description of the invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating directions or positional relationships, are based on directions or positional relationships shown in the drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. The term "connection" only indicates the connection between devices and has no special meaning.

[0027] like Figure 1 , 2 , 3, 4, 5, 6, and 7, a drawing device for mathematical modeling comprises a drawing box 1, a cover plate 6 fixedly mounted on the top surface of the drawing box 1, a drawing area groove 10 is provided on the cover plate 6, a scale marking layer 11 is provided on the outer edge of the drawing area groove 10, a drawing paper support platform 12 is provided at the bottom of the drawing area groove 10, a horizontal transverse sliding ruler 14 and a horizontal longitudinal sliding ruler 13 are movably connected to the inner wall of the drawing area groove 10 from top to bottom, a peripheral sliding groove 7 is provided on the top surface of the cover plate 6 outside the drawing area groove 10, and a A slider 8 is provided with an outer sliding ruler 9, a paper clamping groove 23 is provided between the drawing paper supporting platform 12 and the bottom surface of the cover plate 6, a longitudinal limit groove 33 is provided on the drawing paper supporting platform 12 inside the paper clamping groove 23, a paper lifting clamping fixing block 34 matched with the bottom of the cover plate 6 is installed in the longitudinal limit groove 33, a bolt 28 is installed at the center position of the paper lifting clamping fixing block 34, the bottom of the bolt 28 is fixedly connected to the output end of the micro motor 19 installed on the bottom surface of the drawing box 1, and automatic paper feeding and discharging mechanisms are provided on the left and right sides of the paper clamping groove 23.

[0028] The automatic paper feeding and discharging mechanism comprises a paper feeding port 20 and a paper discharging port 21 respectively provided on the left and right sides of the drawing box 1, and a paper feeding cavity 25 and a paper discharging cavity 26 respectively provided on the left and right sides of the drawing paper support platform 12 to match the paper clamping groove 23, and a paper feeding driven roller 29 and a paper feeding driving roller 35 matching the paper feeding port 20 are provided in the paper feeding cavity 25, and one end of the paper feeding driving roller 35 is meshed with the paper feeding driving gear 36 through the paper feeding driven gear 31, and the paper feeding driving gear 36 is meshed with the paper feeding driven gear 31. 6 is connected to the output end of the paper feed motor 37, a paper discharge driven roller 30 and a paper discharge active roller 38 matched with the paper discharge port 21 are arranged in the paper discharge cavity 26, one end of the paper discharge active roller 38 is meshed with the paper discharge active gear 39 through the paper discharge driven gear 32, and the paper discharge active gear 39 is connected to the output end of the paper discharge motor 40, and a controller 2 is installed at the front end of the drawing box 1, and the controller 2 is connected to the paper feed motor 37, the paper discharge motor 40 and the micro motor 19 through a wire.

[0029] The bottom of the drawing box 1 is provided with a rotating support leg 18 through a connecting piece 17. The rotating support leg 18 is respectively installed on the left and right sides or the front and rear sides of the bottom of the drawing box 1. The drawing area slot 10 is a square slot structure. The left and right inner walls of the drawing area slot 10 are provided with mutually symmetrical upper slide grooves 42. The front and rear inner walls of the drawing area slot 10 below the upper slide grooves 42 are provided with mutually symmetrical lower slide grooves 43. The two ends of the horizontal longitudinal sliding ruler 13 are respectively clamped in the two upper slide grooves 42, and the two ends of the horizontal transverse sliding ruler 14 are respectively clamped in the two lower slide grooves 43. The horizontal transverse sliding ruler 14 and the horizontal longitudinal sliding ruler 13 are respectively provided with a horizontal transverse perspective through hole slot 16 and a horizontal longitudinal perspective through hole slot 15. The bottom of the horizontal longitudinal sliding ruler 13 is in contact with the top of the horizontal transverse sliding ruler 14, and the bottom of the horizontal transverse sliding ruler 14 is matched with the top surface of the paper clamping slot 23.

[0030] The peripheral sliding ruler 9 is a strip-shaped structure that can rotate freely along the direction of the slider 8, and the length of the peripheral sliding ruler 9 is not less than the length of the diagonal line of the drawing area slot 10. The front and rear sides of the paper clamping slot 23 are both provided with paper upper pressing plates 22, and the inner center position of the paper upper pressing plate 22 is fixedly installed with a pressure receiving top plate 24 that matches the top surface of the paper lifting clamping fixed block 34, the top of the pressure receiving top plate 24 is fixedly connected to the bottom surface of the cover plate 6, and the top and bottom surfaces of the paper upper pressing plate 22 are respectively connected to the cover plate 6 and the drawing paper support platform 12.

[0031] The paper inlet 20 and the paper outlet 21 are arranged in the same plane, the horizontal center line of the paper inlet 20 is in the same plane as the horizontal center line of the paper clamping slot 23, a paper inlet gap is arranged between the paper inlet driven roller 29 and the paper inlet active roller 35, and the paper inlet gap is in the same plane as the horizontal center line of the paper clamping slot 23. The horizontal center line of the paper outlet 21 is in the same plane as the horizontal center line of the paper clamping slot 23, a paper outlet gap is arranged between the paper outlet driven roller 30 and the paper outlet active roller 38, and the paper outlet gap is in the same plane as the horizontal center line of the paper clamping slot 23. The controller 2 is provided with a paper inlet button 3, a paper outlet button 4 and a paper fixing button 5, and the paper inlet driven roller 29, the paper inlet active roller 35, the paper outlet driven roller 30 and the paper outlet active roller 38 are all provided with an anti-skid layer 27, and the controller 2 is connected to a rechargeable battery pack 41 installed inside the drawing paper support platform 12 through a wire.

[0032] When in use, the drawing box 1 can be flexibly moved and loaded for transportation, and is suitable for use in different scenes and working conditions. The drawing paper support platform 12 below the drawing area slot 10 is a plane structure, which provides a smooth and flat work surface for modeling and drawing operations. When the modeling and drawing operation is running, by adjusting the horizontal transverse sliding ruler 14 and the horizontal longitudinal sliding ruler 13, in conjunction with the scale identification layer 11, it is possible to easily achieve the drawing operations such as point, line, length measurement, and line segment connection required in the X-axis and Y-axis directions during the drawing process. At the same time, in conjunction with the use of the peripheral sliding ruler 9, by adjusting the position of the slider 8 in the peripheral sliding slot 7 and rotating the angle of the peripheral sliding ruler 9 around the slider 8, the peripheral sliding ruler 9, the horizontal transverse sliding ruler 14, and the horizontal longitudinal sliding ruler 13 can be formed into a drawing auxiliary ruler body combination structure during the drawing operation to meet different drawing needs.

[0033] During use, when the micro motor 19 is running, it can drive the bolt 28 to rotate. During the rotation of the bolt 28, an internal thread layer that matches the external thread of the bolt 28 is provided on the inner wall of the paper lifting and clamping fixing block 34 mounted on the outside thereof. Under the limiting action of the longitudinal limit groove 33, when the micro motor 19 is turned on, the paper lifting and clamping fixing block 34 becomes a sliding nut structure that slides up and down in the longitudinal limit groove 33. When the top of the paper lifting and clamping fixing block 34 rises and exposes the top surface of the longitudinal limit groove 33, the drawing paper set in the paper clamping groove 23 is clamped between the upper part of the paper lifting and clamping fixing block 34 and the bottom of the cover plate 6, thereby implementing fixed limitation on the drawing paper, ensuring the stability and smoothness of the paper during the modeling and drawing process, and improving the efficiency and accuracy of the modeling and drawing.

[0034] When in use, the automatic paper feeding and discharging mechanism improves the automation level of this product. Because the product is designed as a flexible and movable box structure, the portability of the product needs to be fully considered during use. In addition to meeting the flexibility of using the reference ruler during drawing and the accuracy of drawing markings, the quickness of paper laying, stability and fixation must also be considered. This product implements paper filling at the paper inlet 20. The drawing paper is automatically fed into the paper clamping slot 23 in a single-sheet feeding manner, and is fitted and connected with the drawing paper support platform 12 at the bottom to ensure the flatness of the drawing paper surface during the drawing process. After the drawing operation is completed, the paper can be smoothly output through the paper outlet 21, providing convenient operation for later storage and preservation.

[0035] The specific automatic feeding method of paper is as follows: the drawing paper is fed through the paper inlet 20, and the paper feeding motor 37 is turned on by the controller 2, the paper feeding motor 37 drives the paper feeding active gear 36 to rotate, the paper feeding active gear 36 drives the paper feeding driven gear 31 to rotate, the paper feeding driven gear 31 drives the paper feeding active roller 35 to rotate, the paper feeding active roller 35 drives the paper feeding driven roller 29 to rotate by friction, while the rotating operation is running, the drawing paper is clamped by the gap between the paper feeding driven roller 29 and the paper feeding active roller 35 and gradually moves toward the paper clamping slot 23 In order to improve the stability of the product during operation and ensure the accuracy of paper feeding, a paper feeding limit slot can be set at the left side of the paper clamping slot 23 to implement accurate receiving operation during feeding. When a piece of drawing paper is fully fed and clamped to the paper clamping slot 23, the right side of the drawing paper just falls into the gap between the paper output driven roller 30 and the paper output active roller 38. At this time, the paper output motor 40 is in the off state, and then the micro motor 19 is turned on to make the lifting clamping fixed block 34 rise and clamp the drawing paper stably.

[0036] The specific automatic paper discharging method is as follows: when the modeling and drawing operation is completed, the micro motor 19 reverses to make the lifting clamping fixed block 34 descend, release the clamping state of the drawing paper, and then turn on the paper discharging motor 40, the paper discharging motor 40 drives the paper discharging active gear 39 to rotate, the paper discharging active gear 39 drives the paper discharging driven gear 32 to rotate, the paper discharging driven gear 32 drives the paper discharging active roller 38 to rotate, the paper discharging active roller 38 drives the paper discharging driven roller 30 to rotate by friction, while the rotating operation is running, the drawing paper is clamped by the gap between the paper discharging driven roller 30 and the paper discharging active roller 38 and gradually moves toward the paper discharging port 21. In order to improve the stability of the product during operation and ensure the accuracy of the paper discharging operation, a paper discharging receiving limit groove can be set at the right side of the paper clamping groove 23 during the specific operation to implement the accurate receiving operation during the discharging process. With the continuous rotation of the paper discharging motor 40, the drawing paper after the modeling and drawing is completed is finally discharged from the paper discharging port 21.

[0037] When in use, the rotating support leg 18 is adjusted and regulated according to the flatness of the specific bottom support surface. The rotating support leg 18 can adopt an L, U or I-shaped structure, and correspondingly implement angle adjustment and telescopic adjustment operations. At the same time, it can support the drawing work surface on one side to form an inclined surface structure, and can also adjust the drawing work surface on both sides synchronously to form a horizontal support structure. The upper slide groove 42 and the lower slide groove 43 provide a movable and support-limited clamping groove structure for the horizontal longitudinal sliding scale 13 and the horizontal transverse sliding scale 14, which realizes the free transformation and positioning measurement of the X-axis and Y-axis directions during the drawing process, and improves the drawing accuracy and drawing efficiency. The horizontal transverse perspective through-hole groove 16 and the horizontal longitudinal perspective through-hole groove 15 provide convenient operation for marking the starting position of the marking line or punctuation during the drawing process. The pen stroke position can pass through the horizontal transverse perspective through-hole groove 16 and the horizontal longitudinal perspective through-hole groove 15 for corresponding marking operations, which improves the flexibility during use. The contact positions of the upper and lower sliding rulers fit each other and correspond to the bottom paper, reducing the error of the pen touch point.

[0038] The peripheral sliding ruler 9 can be used alone or in conjunction with the horizontal transverse sliding ruler 14 and the horizontal longitudinal sliding ruler 13. It provides auxiliary measurement and drawing work for modeling and drawing work at the top of the outer layer. The length of the peripheral sliding ruler 9 should not be less than the length of the diagonal line of the drawing area slot 10 to ensure that it can play the greatest auxiliary role during use and fully cover the drawing area slot 10.

[0039] As another embodiment of the present invention, this product provides a design of an upper paper pressure plate 22. The upper paper pressure plate 22 can provide a more stable upper limit and cover for the drawing paper after it enters the paper clamping slot 23, thereby ensuring that the paper is smooth. At the same time, it also provides top pressure support for the paper lifting and clamping fixing block 34 after it rises, thereby ensuring that the paper will not warp or have excessive vertical displacement after it is fixed.

[0040] The paper inlet 20 and the paper outlet 21 are opened corresponding to each other and on the same plane, which helps to improve the efficiency of paper in and out and avoid paper jams. The paper feeding gap between the paper feeding driven roller 29 and the paper feeding active roller 35 corresponds to the horizontal height of the paper after feeding, ensuring the smooth advancement of the paper after feeding and realizing the efficient corresponding insertion of the drawing paper. At the same time, the design of the paper outlet also meets the above requirements to ensure the efficient operation of paper discharge.

[0041] During specific operation: a piece of drawing paper is loaded from the paper feed port 20, and then the paper feed button 3 is turned on, the paper feed motor 37 runs, driving the paper feed active gear 36 to rotate, and the paper feed driven gear 31 meshing with the paper feed active gear 36 rotates. While the paper feed driven gear 31 rotates, the paper feed active roller 35 rotates, and under the interaction of the anti-slip layer 27, the paper feed driven roller 29 is driven to rotate. As the drawing paper loading operation continues, the end of the paper entering the paper feed cavity 25 is clamped by the paper feed driven roller 29 and the paper feed active roller 35 and moves toward the paper clamping slot 23 until the paper is completely moved to the paper clamping slot 23, and then the paper feed motor 37 is turned off.

[0042] After the paper feeding operation is completed, the original feeding end of the drawing paper just falls between the paper output driven roller 30 and the paper output active roller 38. At this time, the paper fixing button 5 is turned on, and the micro motor 19 is running, driving the bolt 28 to rotate. During the rotation, the sliding nut principle is used to drive the paper lifting clamping fixed block 34 to slide upward along the inner wall of the longitudinal limit groove 33, and apply pressure to the bottom of the paper. During the pressure operation, the top of the drawing paper contacts the bottom surface of the cover plate 6 or the bottom surface of the upper pressure plate 22 of the paper, so as to fix the drawing paper after the paper feeding and filling operation. At least one micro motor 19 is set at the front and rear bottom positions of this product, and the fixed points are set according to the paper size and model to meet the stability requirements. After the paper is fixed, the drawing paper support platform 12 becomes the bottom support surface of the paper during the drawing process, and the paper is stably fixed on its surface.

[0043] When the drawing paper is automatically fixed and stabilized, the modeling and drawing operation is implemented through the cooperation of the horizontal transverse sliding ruler 14, the horizontal longitudinal sliding ruler 13 and the peripheral sliding ruler 9. The different axial drawing requirements during the specific modeling and drawing operation are realized by the free movement of the horizontal transverse sliding ruler 14 and the horizontal longitudinal sliding ruler 13 with reference to the scale identification layer 11.

[0044] As another implementation of the product, the modeling and drawing work can also be carried out by using an automatic drawing pen supported and fixed on the upper part of the cover plate 6.

[0045] After the modeling and drawing operation is completed, the paper discharge button 4 is turned on, and the paper discharge motor 40 drives the paper discharge driving gear 39 to rotate, and further drives the paper discharge driven gear 32 and the paper discharge driving roller 38 to rotate. Under the interaction of the anti-slip layer 27, the paper discharge driven gear 32 is driven to rotate, and the drawing paper clamped between the paper discharge driven roller 30 and the paper discharge driving roller 38 is moved toward the paper discharge port 21, and finally all the paper is discharged. Then the drawing paper is collected and saved.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A drawing device for mathematical modeling, comprising a drawing box (1), and a cover plate (6) fixedly mounted on the top surface of the drawing box (1), characterized in that: The cover plate (6) is provided with a drawing area groove (10), the outer edge of the drawing area groove (10) is provided with a scale identification layer (11), the bottom of the drawing area groove (10) is provided with a drawing paper support platform (12), the inner wall of the drawing area groove (10) is movably connected with a horizontal transverse sliding ruler (14) and a horizontal longitudinal sliding ruler (13) from top to bottom, the top surface of the cover plate (6) outside the drawing area groove (10) is provided with a peripheral sliding groove (7), a slider (8) is connected in the peripheral sliding groove (7), and the slider (8) is installed with a peripheral sliding ruler (9), and the drawing paper support A paper clamping groove (23) is provided between the platform (12) and the bottom surface of the cover plate (6); a longitudinal limit groove (33) is provided on the drawing paper support platform (12) inside the paper clamping groove (23); a paper lifting clamping fixing block (34) matched with the bottom of the cover plate (6) is installed in the longitudinal limit groove (33); a bolt (28) is installed at the center position of the paper lifting clamping fixing block (34); the bottom of the bolt (28) is fixedly connected to the output end of a micro motor (19) installed on the bottom surface of the drawing box (1); and automatic paper feeding and discharging mechanisms are provided on the left and right sides of the paper clamping groove (23).

2. The drawing device for mathematical modeling according to claim 1, characterized in that: The automatic paper feeding and discharging mechanism comprises a paper feeding port (20) and a paper discharging port (21) respectively arranged on the left and right sides of the drawing box (1); a paper feeding cavity (25) and a paper discharging cavity (26) respectively arranged on the left and right sides of the drawing paper support platform (12) and matching with the paper clamping groove (23); a paper feeding driven roller (29) and a paper feeding driving roller (35) matching with the paper feeding port (20) are arranged in the paper feeding cavity (25); one end of the paper feeding driving roller (35) is meshed with the paper feeding driving gear (36) through the paper feeding driven gear (31); the paper feeding driving gear (36) The paper discharge chamber (26) is connected to the output end of the paper feed motor (37). A paper discharge driven roller (30) and a paper discharge driving roller (38) that match the paper discharge port (21) are arranged in the paper discharge chamber (26). One end of the paper discharge driving roller (38) is meshed with a paper discharge driving gear (39) through a paper discharge driven gear (32). The paper discharge driving gear (39) is connected to the output end of the paper discharge motor (40). A controller (2) is installed at the front end of the drawing box (1). The controller (2) is connected to the paper feed motor (37), the paper discharge motor (40) and the micro motor (19) through wires.

3. The drawing device for mathematical modeling according to claim 1, characterized in that: The bottom of the drawing box (1) is provided with a rotating support leg (18) via a connecting piece (17). The rotating support leg (18) is respectively installed on the left and right sides or the front and rear sides of the bottom of the drawing box (1). The drawing area groove (10) is a square groove structure. The left and right inner walls of the drawing area groove (10) are provided with mutually symmetrical upper slide grooves (42). The front and rear inner walls of the drawing area groove (10) below the upper slide grooves (42) are provided with mutually symmetrical lower slide grooves (43). The two ends of the horizontal longitudinal sliding ruler (13) are respectively clamped in the two upper slide grooves (42), and the two ends of the horizontal transverse sliding ruler (14) are respectively clamped in the two lower slide grooves (43).

4. The drawing device for mathematical modeling according to claim 1, characterized in that: The horizontal transverse sliding ruler (14) and the horizontal longitudinal sliding ruler (13) are respectively provided with a horizontal transverse perspective through hole groove (16) and a horizontal longitudinal perspective through hole groove (15), the bottom of the horizontal longitudinal sliding ruler (13) is in contact with the top of the horizontal transverse sliding ruler (14), and the bottom of the horizontal transverse sliding ruler (14) is matched with the top surface of the paper clamping groove (23).

5. The drawing device for mathematical modeling according to claim 1, characterized in that: The peripheral sliding scale (9) is a long strip structure that can rotate freely along the direction of the slider (8), and the length of the peripheral sliding scale (9) is not less than the length of the diagonal line of the drawing area groove (10).

6. The drawing device for mathematical modeling according to claim 1, characterized in that: The front and rear sides of the paper clamping groove (23) are both provided with a paper upper pressure plate (22), and a pressure receiving top plate (24) matched with the top surface of the paper lifting clamping fixed block (34) is fixedly installed at the inner center position of the paper upper pressure plate (22), and the top of the pressure receiving top plate (24) is fixedly connected to the bottom surface of the cover plate (6), and the top surface and bottom surface of the paper upper pressure plate (22) are respectively connected to the cover plate (6) and the drawing paper support platform (12).

7. The drawing device for mathematical modeling according to claim 2, characterized in that: The paper feed port (20) and the paper outlet (21) are arranged in the same plane, the horizontal center line of the paper feed port (20) and the horizontal center line of the paper engaging slot (23) are in the same plane, and a paper feed gap is arranged between the paper feed driven roller (29) and the paper feed active roller (35), and the paper feed gap and the horizontal center line of the paper engaging slot (23) are in the same plane.

8. The drawing device for mathematical modeling according to claim 2, characterized in that: The horizontal center line of the paper outlet (21) and the horizontal center line of the paper engaging slot (23) are in the same plane, and a paper outlet gap is provided between the paper outlet driven roller (30) and the paper outlet active roller (38), and the paper outlet gap and the horizontal center line of the paper engaging slot (23) are in the same plane.

9. The drawing device for mathematical modeling according to claim 2, characterized in that: The controller (2) is provided with a paper feed button (3), a paper discharge button (4) and a paper fixing button (5); a paper feed driven roller (29), a paper feed active roller (35), a paper discharge driven roller (30) and a paper discharge active roller (38) are all provided with an anti-slip layer (27); the controller (2) is connected to a rechargeable battery pack (41) installed inside the drawing paper support platform (12) via a wire.

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