Visual communication design teaching device

Abstract

The invention belongs to the technical field of teaching, and discloses a visual communication design teaching device which comprises a supporting frame and further comprises a frame assembly fixed to the supporting frame through a stabilizing assembly. And the first clamping assembly is arranged on the frame assembly through a transmission assembly. The drawing is arranged outside the cam rod and the arc-shaped plate piece in a sleeving mode, the inner ring end of the drawing is located between the cam rod and the arc-shaped plate piece, the inner ring end of the drawing is clamped between the cam rod and the arc-shaped plate piece, and at the moment, the inner ring end of the drawing can be fixed to the cam rod and the arc-shaped plate piece; and meanwhile, the outer end of the drawing is clamped through the second clamping assembly, the first clamping assembly and the transmission assembly can be pulled to move downwards along the frame assembly, in the downward moving process, a cam rod, an arc-shaped plate piece, a second transmission wheel and a movable wheel rotate to unfold the drawing, the drawing is wound and taken down through reverse operation, and the phenomenon that the drawing is torn when taken down is avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of teaching, and specifically relates to a teaching device for visual communication design. Background Art

[0002] Visual communication design is an art and science that effectively conveys information through visual elements. It covers multiple fields from graphic design to digital media, aiming to transform complex information into an easily understandable and memorable form through means such as graphics, colors, and typography. Poster or drawing display is of great significance in visual communication design teaching. It is not only an intuitive manifestation of teaching achievements but also an important way to cultivate students' design thinking, expression ability, and practical ability. Through the display session, students can transform theoretical knowledge into practical applications and obtain valuable feedback and suggestions in teacher-student interaction. Poster or drawing display should be regarded as an indispensable part of visual communication design teaching. Currently, in visual communication teaching, drawings are usually fixed to the display rack with thumbtacks or tape. However, thumbtacks usually fix the four corners of the drawing, leaving holes on the drawing. Long-term replacement of the drawing will cause the holes on the drawing to increase and the phenomenon of tearing to occur. When the tape is used to fix the drawing and then removed, it is difficult to separate the tape from the drawing, and the phenomenon of tearing is likely to occur. At the same time, for the convenience of storage and transportation, the drawing is usually wound into a cylindrical shape. When fixing it with thumbtacks or tape, the drawing needs to be unfolded before it can be fixed to the display rack, and manual winding is required after use, increasing the risk of tearing the drawing. Therefore, a teaching device for visual communication design is proposed. Summary of the Invention

[0003] To solve the problems raised in the above background art, the present invention provides a teaching device for visual communication design, which solves the problem that existing drawings are usually fixed to the display rack with thumbtacks or tape, but this method causes the drawing to be easily torn after repeated use.

[0004] To achieve the above object, the present invention provides the following technical solution: A teaching device for visual communication design, including a support frame, and further including:

[0005] A frame assembly, the frame assembly is fixed to the support frame through a stabilizing assembly;

[0006] A first clamping assembly, the first clamping assembly is arranged on the frame assembly through a transmission assembly;

[0007] A second clamping assembly, the second clamping assembly is arranged on the frame assembly, and the first clamping assembly and the second clamping assembly are used to clamp both ends of the drawing;

[0008] A limiting assembly, the limiting assembly is installed at the bottom of the transmission assembly;

[0009] The transmission assembly includes a second cross frame sliding on the frame assembly, a transmission rod is arranged inside the second cross frame, and a first transmission wheel is fixedly mounted on one end of the transmission rod.

[0010] The first clamping assembly comprises a cam rod movably mounted on the second cross frame, a second transmission wheel is movably mounted on one end of the cam rod, and the first transmission wheel is connected to the second transmission wheel via a belt;

[0011] The side of the second transmission wheel is fixed with an arc-shaped plate, one end of the second cross frame is fixed with a support plate, the middle of the support plate is movably mounted with a movable wheel, the movable wheel is provided with a through hole for one end of the arc-shaped plate to engage, the side of the movable wheel is fixed with a stabilizing frame, the stabilizing frame is threaded with a docking screw, and the other end of the cam rod is provided with a threaded hole;

[0012] The drawing sheet is sleeved on the outside of the cam rod and the arc-shaped plate, the support plate is installed on the second cross frame, the other end of the cam rod is sleeved on the middle part of the movable wheel, and one end of the drawing sheet is clamped between the cam rod and the arc-shaped plate by rotating the cam rod, and the docking screw is screwed into the threaded hole to fix the cam rod.

[0013] Preferably, the frame assembly comprises a tooth plate movably mounted on the support frame, a frame body is fixedly mounted on the outside of the tooth plate, and guide rods are fixedly mounted on both ends of the frame body.

[0014] Preferably, the second cross frame vertically slides on the outside of the guide rod through a second docking ear, and a gear meshing with a toothed plate is fixedly mounted in the middle of the transmission rod.

[0015] Preferably, the limiting assembly includes a docking plate fixedly mounted on the bottom of the second cross frame, a connecting rod movably sleeved on the docking plate, one end of the connecting rod is fixedly mounted with a tooth engaged with the tooth plate, and a spring is fixedly mounted on the side of the docking plate to support the tooth.

[0016] Preferably, the second clamping assembly comprises a first cross frame, the first cross frame is arranged on the outside of the guide rod through a first docking ear sleeve, a fixing rod is fixed inside the first cross frame, and a clamping member for clamping the drawing is provided on the fixing rod.

[0017] Preferably, the second clamping assembly further comprises a clamping plate movably arranged on the first cross frame, an elastic sheet is arranged between the clamping plate and the first cross frame, and under the action of the elastic sheet, both ends of the clamping plate pass through the interior of the first docking ear and abut against the guide rod.

[0018] Preferably, the stabilizing assembly comprises a threaded rod fixedly mounted on the back of the support frame, the outer movable sleeve of the threaded rod is provided with a support plate, both ends of the support plate are fixedly mounted with docking blocks, and the outer thread sleeve of the threaded rod is provided with a nut;

[0019] The two ends of the support frame are provided with a second rectangular groove, and the two ends of the tooth plate are provided with a first rectangular groove having the same specifications as the second rectangular groove.

[0020] Preferably, when the tooth plate is kept in a vertical state, the nut rotates to push the support plate so that the docking block passes through the second rectangular groove and is engaged with the inside of the first rectangular groove;

[0021] When the tooth plate is in a horizontal state, the support plate and the docking block are synchronously in a horizontal state, and the support plate is pushed by the nut so that the docking block is engaged with the inside of the first rectangular groove.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The present invention arranges the drawing sheet on the outside of the cam rod and the arc-shaped plate, and the inner circle end of the drawing sheet is located between the cam rod and the arc-shaped plate, the support plate is installed on the second horizontal frame, and the other end of the cam rod passes through the middle of the movable wheel, and the arc-shaped plate passes through the through hole. The cam rod is rotated to contact the arc-shaped plate, and the inner circle end of the drawing sheet is clamped between the cam rod and the arc-shaped plate, and then the docking screw is rotated and screwed into the threaded hole of the cam rod to fix the cam rod. At this time, the inner circle end of the drawing sheet can be fixed to the cam rod and the arc-shaped plate, and the outer end of the drawing sheet is clamped by the second clamping assembly, and the first clamping assembly and the transmission assembly can be pulled down along the frame assembly. During the downward movement, the cam rod, the arc-shaped plate, the second transmission wheel and the movable wheel rotate to unfold the drawing sheet, and the reverse operation is used to roll up the drawing sheet and take it down, so as to avoid the phenomenon of tearing when the drawing sheet is taken down;

[0024] The present invention rotates the nut in the opposite direction, and the docking block is separated from the first rectangular groove and the second rectangular groove, so that the frame body can be rotated to a horizontal state, and the support plate and the docking block are in a horizontal state. The nut is rotated to push the support plate along the outside of the threaded rod so that the docking block is engaged with the inside of the first rectangular groove. The docking block can improve the stability of the frame body in horizontally displaying drawings, so that different drawings can be displayed;

[0025] The present invention arranges the drawing on the outside of the first clamping assembly, and can pull the clamping plate according to the length of the drawing to make the two ends disengage from the guide rod, so as to push the second clamping assembly to slide along the guide rod to a suitable position, and release the clamping plate so that it contacts the guide rod under the action of the spring sheet, so as to pull the first clamping assembly and the transmission assembly to unfold the drawing, thereby ensuring that the drawing is located in the middle of the frame body and the support frame, which is more convenient for students to watch. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall external structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the side external structure of the present invention;

[0028] Figure 3 This is a schematic diagram of the mating structure of the transmission component and the frame component of the present invention;

[0029] Figure 4 This is a schematic diagram of the internal structure of the transmission component of the present invention;

[0030] Figure 5 This is a schematic diagram of the disassembled structure of the first clamping component of the present invention;

[0031] Figure 6 This is a schematic diagram of the mating structure of the first clamping component and the poster of the present invention;

[0032] Figure 7 This is a schematic diagram of the mating structure of the frame component, the stabilizing component and the transmission component of the present invention;

[0033] Figure 8 This is a schematic diagram of the external structure of the second clamping component of the present invention;

[0034] Figure 9 This is a schematic diagram of the mating structure of the second clamping component and the frame component of the present invention;

[0035] Figure 10 This is a schematic diagram of the deformation structure of the frame component and the support frame of the present invention;

[0036] Figure 11 This is a schematic diagram of the disassembled structure of the stabilizing component of the present invention.

[0037] In the figure: 1. Support frame; 2. Frame component; 21. Frame main body; 22. Guide rod; 23. Rack; 3. Stabilizing component; 31. Threaded rod; 32. Nut; 33. Support plate; 34. Docking block; 35. First rectangular groove; 36. Second rectangular groove; 4. Limiting component; 41. Locking tooth; 42. Spring; 43. Connecting rod; 44. Docking plate; 5. First clamping component; 51. Support plate; 52. Arc plate; 53. Cam rod; 54. Stabilizing frame; 55. Docking screw; 56. Movable wheel; 57. Through hole; 58. Second transmission wheel; 6. Second clamping component; 61. First cross frame; 62. Fixed rod; 63. Clamping piece; 64. First docking ear; 65. Elastic piece; 66. Clamping plate; 7. Transmission component; 71. Second cross frame; 72. Second docking ear; 73. Transmission rod; 74. Gear; 75. First transmission wheel. Detailed implementation manners

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0039] As Figures 1 to 11 shown, the present invention provides a visual communication design teaching device, including a support frame 1, and further including:

[0040] A frame assembly 2, and the frame assembly 2 is fixed to the support frame 1 through a stabilizing assembly 3;

[0041] A first clamping assembly 5, and the first clamping assembly 5 is arranged on the frame assembly 2 through a transmission assembly 7;

[0042] A second clamping assembly 6, and the second clamping assembly 6 is arranged on the frame assembly 2. The first clamping assembly 5 and the second clamping assembly 6 are used to clamp both ends of a drawing;

[0043] A limiting assembly 4, and the limiting assembly 4 is installed at the bottom of the transmission assembly 7;

[0044] Wherein, the transmission assembly 7 includes a second cross frame 71 sliding on the frame assembly 2. A transmission rod 73 is arranged inside the second cross frame 71, and a first transmission wheel 75 is fixedly installed at one end of the transmission rod 73

[0045] The first clamping assembly 5 includes a cam rod 53 movably installed on the second cross frame 71. A second transmission wheel 58 is movably installed at one end of the cam rod 53, and the first transmission wheel 75 and the second transmission wheel 58 are connected by a belt;

[0046] An arc-shaped plate 52 is fixedly installed on the side of the second transmission wheel 58. A support plate 51 is fixedly installed at one end of the second cross frame 71. A movable wheel 56 is movably installed in the middle of the support plate 51. A through hole 57 for engaging one end of the arc-shaped plate 52 is formed in the movable wheel 56. A stabilizing frame 54 is fixedly installed on the side of the movable wheel 56. A docking screw 55 is threadedly arranged on the stabilizing frame 54, and a threaded hole is formed at the other end of the cam rod 53;

[0047] The drawing is sleeved outside the cam rod 53 and the arc-shaped plate 52. The support plate 51 is installed on the second cross frame 71. The other end of the cam rod 53 is sleeved in the middle of the movable wheel 56. By rotating the cam rod 53, one end of the drawing is clamped between the cam rod 53 and the arc-shaped plate 52, and the docking screw 55 is screwed into the threaded hole to fix the cam rod 53.

[0048] The support plate 51 is separated from the second horizontal frame 71, and the rolled drawing is placed on the outside of the cam rod 53 and the arc plate 52, and the inner circle end of the drawing is located between the cam rod 53 and the arc plate 52. The support plate 51 is installed on the second horizontal frame 71, and the other end of the cam rod 53 passes through the middle of the movable wheel 56, and the arc plate 52 passes through the through hole 57. By rotating the cam rod 53 and the arc plate 52, the inner circle end of the drawing is clamped between the cam rod 53 and the arc plate 52, and then the docking screw 55 is rotated. The cam rod 53 is screwed into the threaded hole of the cam rod 53 to fix it. At this time, the inner circle end of the drawing can be fixed on the cam rod 53 and the arc plate 52. At the same time, the outer end of the drawing is clamped by the second clamping assembly 6, and the first clamping assembly 5 and the transmission assembly 7 can be pulled down along the frame assembly 2. During the downward movement, the cam rod 53, the arc plate 52, the second transmission wheel 58 and the movable wheel 56 rotate to unfold the drawing. The reverse operation will roll up the drawing and take it down to avoid tearing when the drawing is taken down.

[0049] like Figure 3 , Figure 4 and Figure 7 As shown, the frame assembly 2 includes a tooth plate 23 movably mounted on the support frame 1, a frame body 21 is fixedly mounted on the outside of the tooth plate 23, and guide rods 22 are fixedly mounted on both ends of the frame body 21;

[0050] The second cross frame 71 vertically slides on the outside of the guide rod 22 through the second docking ear 72, and a gear 74 meshing with the toothed plate 23 is fixedly mounted in the middle of the transmission rod 73;

[0051] The limiting assembly 4 includes a docking plate 44 fixedly mounted on the bottom of the second cross frame 71, a connecting rod 43 is movably mounted on the docking plate 44, one end of the connecting rod 43 is fixedly mounted with a latching tooth 41 engaged with the tooth plate 23, and a spring 42 is fixedly mounted on the side of the docking plate 44 to support the latching tooth 41.

[0052] Clamp the two ends of the drawing on the first clamping assembly 5 and the second clamping assembly 6, pull the connecting rod 43 to disengage the latching tooth 41 from the tooth plate 23, then pull the second cross frame 71 and the first clamping assembly 5 down along the guide rod 22 to unfold the drawing, release the connecting rod 43 after the drawing is unfolded, and the spring 42 pushes the latching tooth 41 to engage with the tooth plate 23 to fix the drawing, so that visual communication teaching can be carried out through the drawing.

[0053] like Figure 8 and Figure 9 As shown, the second clamping assembly 6 includes a first cross frame 61, which is sleeved on the outside of the guide rod 22 through a first docking ear 64. A fixing rod 62 is fixed inside the first cross frame 61, and a clamping member 63 for clamping the drawing is provided on the fixing rod 62.

[0054] By sleeving the drawing on the outside of the first clamping component 5, the outer ring end of the drawing is clamped by the clamping piece 63. At the same time, the number of the clamping pieces 63 can be increased or decreased according to the actual situation. On the basis of not deviating from the present application, the clamping piece 63 can be replaced with other mechanisms having a clamping function.

[0055] As Figures 8 to 11 shown, the second clamping component 6 further includes a clamping plate 66 movably arranged on the first cross frame 61. A spring piece 65 is arranged between the clamping plate 66 and the first cross frame 61. Under the action of the spring piece 65, both ends of the clamping plate 66 pass through the inside of the first docking ear 64 and abut against the guide rod 22;

[0056] The stabilizing component 3 includes a threaded rod 31 fixedly installed on the back of the support frame 1. A support plate 33 is movably sleeved on the outside of the threaded rod 31. Docking blocks 34 are fixedly installed at both ends of the support plate 33. A nut 32 is threadedly sleeved on the outside of the threaded rod 31;

[0057] Second rectangular grooves 36 are formed at both ends of the support frame 1. First rectangular grooves 35 with the same specifications as the second rectangular grooves 36 are formed at both ends of the toothed plate 23;

[0058] When the toothed plate 23 is in a vertical state, the nut 32 rotates to push the support plate 33 so that the docking block 34 passes through the second rectangular groove 36 and is engaged inside the first rectangular groove 35;

[0059] When the toothed plate 23 is in a horizontal state, the support plate 33 and the docking block 34 are in a horizontal state synchronously. By pushing the support plate 33 with the nut 32, the docking block 34 is engaged inside the first rectangular groove 35.

[0060] When the toothed plate 23 is in a vertical state, the nut 32 pushes the support plate 33 and the docking block 34 along the threaded rod 31, so that the docking block 34 passes through the second rectangular groove 36 and is engaged inside the first rectangular groove 35. The stability of the toothed plate 23 and the frame body 21 can be improved through the docking block 34;

[0061] When the drawing needs to be horizontally unfolded, by reversely rotating the nut 32, the docking block 34 disengages from the inside of the first rectangular groove 35 and the second rectangular groove 36, and then the frame body 21 can be rotated to a horizontal state. At the same time, the support plate 33 and the docking block 34 are in a horizontal state. By rotating the nut 32 to push the support plate 33 along the outside of the threaded rod 31, the docking block 34 is engaged inside the first rectangular groove 35. The stability of the frame body 21 for horizontally displaying the drawing can be improved through the docking block 34, realizing the display of drawings in different display modes;

[0062] Meanwhile, the drawing is sleeved outside the first clamping assembly 5. The clamping plate 66 can be pulled according to the length of the drawing to disengage the two ends from contacting the guide rod 22, and then the second clamping assembly 6 can be pushed to slide along the guide rod 22. When it slides to a proper position and the clamping plate 66 is released to contact the guide rod 22 under the action of the elastic piece 65, the first clamping assembly 5 and the transmission assembly 7 can be pulled to unfold the drawing, ensuring that the drawing is located in the middle of the frame body 21 and the support frame 1, which is more convenient for students to view.

[0063] The working principle and usage process of the present invention:

[0064] The support plate 51 is disengaged from the second cross frame 71. The rolled drawing is sleeved outside the cam rod 53 and the arc-shaped plate 52, and the inner ring end of the drawing is located between the cam rod 53 and the arc-shaped plate 52. The support plate 51 is installed on the second cross frame 71, and the other end of the cam rod 53 passes through the middle of the movable wheel 56. The arc-shaped plate 52 passes through the through hole 57. By rotating the cam rod 53 to contact the arc-shaped plate 52, the inner ring end of the drawing is clamped between the cam rod 53 and the arc-shaped plate 52. Then, the docking screw 55 is rotated and screwed into the threaded hole of the cam rod 53 to fix the cam rod 53. At this time, the inner ring end of the drawing can be fixed on the cam rod 53 and the arc-shaped plate 52. The outer ring end of the drawing is clamped by the clamping member 63, and the number of the clamping members 63 can be increased or decreased according to the actual situation;

[0065] The two ends of the drawing are clamped on the first clamping assembly 5 and the second clamping assembly 6. The connecting rod 43 is pulled to disengage the engaging teeth 41 from engaging with the toothed plate 23. At this time, the second cross frame 71 and the first clamping assembly 5 can be pulled to move down along the guide rod 22 to unfold the drawing. The gear 74 moves down along the toothed plate 23 to drive the transmission rod 73, the first transmission wheel 75, the second transmission wheel 58, the cam rod 53, the arc-shaped plate 52 and the movable wheel 56 to rotate to unfold the drawing. After the drawing is unfolded, the connecting rod 43 is released, and the spring 42 pushes the engaging teeth 41 to engage with the toothed plate 23 to fix the drawing;

[0066] When the toothed plate 23 is in a vertical state, the nut 32 pushes the support plate 33 and the docking block 34 along the threaded rod 31, so that the docking block 34 passes through the second rectangular groove 36 and engages inside the first rectangular groove 35. The stability of the toothed plate 23 and the frame body 21 can be improved through the docking block 34;

[0067] When the drawings need to be unfolded horizontally, the nut 32 is rotated in the opposite direction, and the docking block 34 is disengaged from the first rectangular groove 35 and the second rectangular groove 36, so that the frame body 21 can be rotated to a horizontal state, and the support plate 33 and the docking block 34 are in a horizontal state. The nut 32 is rotated to push the support plate 33 along the outside of the threaded rod 31 so that the docking block 34 is engaged with the inside of the first rectangular groove 35. The docking block 34 can improve the stability of the frame body 21 in horizontally displaying drawings, so that drawings of different display modes can be displayed;

[0068] At the same time, the drawing is sleeved on the outside of the first clamping assembly 5. The clamping plate 66 can be pulled according to the length of the drawing to make the two ends disengage from the contact with the guide rod 22, and the second clamping assembly 6 can be pushed to slide along the guide rod 22 to a suitable position. The clamping plate 66 is released and contacts the guide rod 22 under the action of the spring piece 65, and the first clamping assembly 5 and the transmission assembly 7 can be pulled to unfold the drawing, ensuring that the drawing is located in the middle of the frame body 21 and the support frame 1, which is more convenient for students to watch.

[0069] It should be noted that, in this article, relational terms such as first and second, etc. 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. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0070] 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 visual communication design teaching device, comprising a support frame (1), characterized in that: Also includes: A frame assembly (2), wherein the frame assembly (2) is fixed to the support frame (1) via a stabilizing assembly (3); A first clamping assembly (5), wherein the first clamping assembly (5) is arranged on the frame assembly (2) via a transmission assembly (7); A second clamping assembly (6), the second clamping assembly (6) is arranged on the frame assembly (2), and the first clamping assembly (5) and the second clamping assembly (6) are used to clamp two ends of the drawing; A limiting assembly (4), wherein the limiting assembly (4) is installed at the bottom of the transmission assembly (7); The transmission assembly (7) comprises a second cross frame (71) sliding on the frame assembly (2), a transmission rod (73) is arranged inside the second cross frame (71), and a first transmission wheel (75) is fixedly mounted on one end of the transmission rod (73). The first clamping assembly (5) comprises a cam rod (53) movably mounted on the second cross frame (71), a second transmission wheel (58) being movably mounted on one end of the cam rod (53), and the first transmission wheel (75) and the second transmission wheel (58) being connected via a belt; The side of the second transmission wheel (58) is fixedly provided with an arc-shaped plate (52), one end of the second cross frame (71) is fixedly provided with a support plate (51), the middle of the support plate (51) is movably provided with a movable wheel (56), the movable wheel (56) is provided with a through hole (57) for engaging one end of the arc-shaped plate (52), the side of the movable wheel (56) is fixedly provided with a stabilizing frame (54), the stabilizing frame (54) is threadedly provided with a docking screw (55), and the other end of the cam rod (53) is provided with a threaded hole.

2. The visual communication design teaching device according to claim 1, characterized in that: The drawing is sleeved on the outside of the cam rod (53) and the arc-shaped plate (52), the support plate (51) is installed on the second cross frame (71), the other end of the cam rod (53) is sleeved on the middle part of the movable wheel (56), and one end of the drawing is clamped between the cam rod (53) and the arc-shaped plate (52) by rotating the cam rod (53), and the docking screw (55) is screwed into the threaded hole to fix the cam rod (53). The frame assembly (2) comprises a tooth plate (23) movably mounted on the support frame (1), a frame body (21) is fixedly mounted on the outside of the tooth plate (23), and guide rods (22) are fixedly mounted on both ends of the frame body (21).

3. The visual communication design teaching device according to claim 2, characterized in that: The second cross frame (71) vertically slides on the outside of the guide rod (22) through the second docking ear (72), and a gear (74) meshing with the toothed plate (23) is fixedly mounted in the middle of the transmission rod (73).

4. The visual communication design teaching device according to claim 3, characterized in that: The limiting assembly (4) comprises a docking plate (44) fixedly mounted on the bottom of the second cross frame (71); a connecting rod (43) is movably sleeved on the docking plate (44); one end of the connecting rod (43) is fixedly mounted with a latching tooth (41) engaged with the tooth plate (23); and a spring (42) is fixedly mounted on the side of the docking plate (44) for supporting the latching tooth (41).

5. The visual communication design teaching device according to claim 2, characterized in that: The second clamping assembly (6) comprises a first cross frame (61), the first cross frame (61) is sleeved on the outside of the guide rod (22) through a first docking ear (64), a fixing rod (62) is fixed inside the first cross frame (61), and a clamping member (63) for clamping a drawing is arranged on the fixing rod (62).

6. The visual communication design teaching device according to claim 5, characterized in that: The second clamping assembly (6) further comprises a clamping plate (66) movably arranged on the first cross frame (61), a spring sheet (65) being arranged between the clamping plate (66) and the first cross frame (61), and under the action of the spring sheet (65), both ends of the clamping plate (66) pass through the interior of the first docking ear (64) and come into contact with the guide rod (22).

7. The visual communication design teaching device according to claim 6, characterized in that: The stabilizing assembly (3) comprises a threaded rod (31) fixedly mounted on the back of the support frame (1); a support plate (33) is provided on the outer sleeve of the threaded rod (31); docking blocks (34) are fixedly mounted on both ends of the support plate (33); and a nut (32) is provided on the outer thread sleeve of the threaded rod (31); The two ends of the support frame (1) are provided with second rectangular grooves (36), and the two ends of the tooth plate (23) are provided with first rectangular grooves (35) having the same specifications as the second rectangular grooves (36).

8. The visual communication design teaching device according to claim 7, characterized in that: When the tooth plate (23) is kept in a vertical state, the nut (32) rotates and pushes the support plate (33) so that the docking block (34) passes through the second rectangular groove (36) and is engaged with the inside of the first rectangular groove (35); When the tooth plate (23) is in a horizontal state, the support plate (33) and the docking block (34) are synchronously in a horizontal state, and the support plate (33) is pushed by the nut (32) so that the docking block (34) is engaged with the inside of the first rectangular groove (35).

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