A computer upper cover shell surface drawing device and process

Abstract

The invention discloses a device and process for drawing a surface of a computer upper cover shell, comprising a device body and a conveying mechanism, and also comprising: a drawing mechanism connected to the device body and used for drawing a surface of the computer upper cover; and a spray mechanism connected to the drawing mechanism and used for lubricating and cooling the surface of the computer upper cover; the drawing mechanism comprises a blade, a driving member, a rotating shaft A, a rotating shaft B and an adjusting component; the adjusting component comprises a screw, a push rod B and a tilting unit; the driving member of the invention drives the rotating shaft A to rotate through the rotating shaft B, the rotating shaft A drives the blade to rotate, and at the same time the screw pushes the tilting unit to rotate, the elastic member A pushes the rotating shaft A to perform linear motion along the rotating shaft B, the rotating shaft A pushes the push rod B to contact the tilting unit to cause the rotating shaft A to perform reciprocating linear motion, and at the same time the rotating shaft A changes the spraying intensity of the spray mechanism through its own moving thread, so as to achieve multiple drawing treatments on the surface of the computer upper cover.

Description

Technical Field

[0001] This invention belongs to the field of wire drawing technology, and in particular relates to a wire drawing device and process for the surface of a computer top cover. Background Technology

[0002] With the advancement of technology, more and more families or individuals have been equipped with personal computers in recent years. Since brushed finish can bring out the texture of metal materials, many computer casings have adopted brushed finish.

[0003] Existing wire drawing methods mainly use flat-pressure abrasive belt drawing or roller brush drawing. For some special materials, chemical etching is required to form textures.

[0004] Existing wire drawing equipment cannot change the wire drawing pattern according to the user's needs, nor can it adjust the lubrication and cooling intensity in real time according to different wire drawing patterns. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a brushing device and process for the surface of a computer top cover, thus solving the aforementioned problems.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a brushed surface device for a computer top cover, comprising a device body and a conveying mechanism, and further comprising:

[0007] A wire-drawing mechanism, connected to the main body of the device, is used to perform a wire-drawing process on the surface of the computer's top cover; and

[0008] The spray mechanism, connected to the wire drawing mechanism, is used to lubricate and cool the surface of the computer cover.

[0009] The wire drawing mechanism includes a blade, a drive component, a rotating shaft A, a rotating shaft B, and an adjustment assembly. The drive component is connected to the device body. The drive component is connected to the rotating shaft B, which is rotatably connected to the device body, through a transmission pair. The rotating shaft A and the rotating shaft B are in sliding fit. The blade is connected to the rotating shaft A. The rotating shaft A is connected to the spraying mechanism through an elastic element A.

[0010] The adjustment assembly includes a screw, a push rod B, and a tilting unit. The screw is threadedly connected to the device body, and the push rod B is connected to the rotating shaft A.

[0011] The driving component drives the rotating shaft A to rotate horizontally via the rotating shaft B. The rotating shaft A drives the blade to rotate, while the screw pushes the tilting unit to rotate vertically. The elastic element A pushes the rotating shaft A to move linearly horizontally along the rotating shaft B. The rotating shaft A pushes the push rod B to abut against the tilting unit, causing the rotating shaft A to move linearly back and forth horizontally. At the same time, the rotating shaft A changes the spray intensity of the spray mechanism through its own movement thread, thereby achieving various brushing treatments on the surface of the computer cover.

[0012] Based on the above technical solutions, the present invention also provides the following optional technical solutions:

[0013] A further technical solution: The device body is provided with a positioning component for positioning the computer's top cover.

[0014] Further technical solution: The spraying mechanism includes a liquid storage cylinder and a push plate A. The push plate A is slidably engaged with the liquid storage cylinder. The liquid storage cylinder is rotatably connected to a rotating shaft B. The push plate A is threadedly connected to the rotating shaft B. The liquid storage cylinder is connected to the device body via a support frame. It also includes:

[0015] The inlet component, connected to the liquid storage tank, is used to introduce liquid into the liquid storage tank;

[0016] The export component, connected to the liquid reservoir, is used to export liquid from the reservoir; and

[0017] The actuating component, connected to the liquid storage tank, is used to change the internal air pressure of the liquid storage tank.

[0018] Further technical solution: The conveying mechanism includes a moving roller, a support roller, and a fixed roller. The moving roller, support roller, and fixed roller are arranged linearly and horizontally on the device body and rotatably connected to the device body. The moving roller, support roller, and fixed roller are connected by belt drive. The mechanism also includes:

[0019] A fixing component, connected to a belt, is used to limit the movement of the computer's top cover.

[0020] A further technical solution: The tilting unit includes a turntable and a ball A. The turntable is movably connected to the ball A. The ball A is connected to the rotating shaft B. The turntable is movably connected to the screw.

[0021] Further technical solution: The positioning component includes a roller, a sliding plate B, and a square tube B. The roller is embedded in the sliding plate B and is rotatably connected to the sliding plate B. The sliding plate B and the square tube B are slidably engaged. An elastic element B is provided inside the square tube B. The elastic element B is connected to the sliding plate B and the square tube B.

[0022] Further technical solution: The inlet component includes a pipe A and a one-way valve. The one-way valve is embedded in and connected to the pipe A. The pipe A passes through and is connected to the liquid storage tank.

[0023] Further technical solution: The pushing component includes a push plate B and a push rod A. The push plate B is connected to the push rod A. Both the push plate B and the push rod A are slidably engaged with the liquid storage cylinder. The push rod A is connected to the rotating shaft A.

[0024] Further technical solution: The fixing component includes a timer, a square tube A, a sliding plate A, and an electromagnet. The electromagnet is embedded in and connected to the sliding plate A. The sliding plate A and the square tube A are slidably engaged. A linear motion component is provided inside the square tube A. The elastic component B is connected to the square tube A and the sliding plate A. The timer is connected to the square tube A. The electromagnet is electrically connected to the timer. The square tube A is connected to the belt.

[0025] A brushed finish process for a computer top cover shell based on the above-mentioned device, characterized by comprising the following steps:

[0026] SP1: Place the computer cover plate on the conveyor mechanism for limiting and fixing;

[0027] SP2: The wire drawing mechanism activates the adjustment component to adjust the movement position of the blade according to the wire drawing pattern required by the computer cover plate, so that the blade rotates while performing linear reciprocating motion in the horizontal direction;

[0028] SP3: The spray mechanism synchronously changes the intensity of the liquid sprayed onto the wire drawing area of ​​the computer cover according to the horizontal movement thread of the blade.

[0029] SP4: The conveying mechanism transports the computer cover plate to the wire drawing mechanism for wire drawing.

[0030] Beneficial effects

[0031] This invention provides a brushing device and process for the surface of a computer top cover, which has the following advantages compared with the prior art:

[0032] 1. The conveying mechanism can fix the computer cover and drive it to make linear motion in the horizontal direction. At this time, the driving component drives the rotating shaft A to rotate in the horizontal direction through the rotating shaft B. The rotating shaft A drives the blade to rotate. At the same time, the screw pushes the tilting unit to rotate in the vertical direction. The elastic element A pushes the rotating shaft A to make linear motion in the horizontal direction along the rotating shaft B. The rotating shaft A pushes the push rod B to abut against the tilting unit, causing the rotating shaft A to make linear reciprocating motion in the horizontal direction. At the same time, the rotating shaft A changes the spray intensity of the spraying mechanism through its own motion thread to realize various brushing treatments on the surface of the computer cover. Attached Figure Description

[0033] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0034] Figure 2 This is a schematic diagram of the overall structure of the present invention.

[0035] Figure 3 This is a schematic diagram of the spraying mechanism in this invention.

[0036] Figure 4 For the present invention Figure 2 Enlarged schematic diagram of the structure of section A in the middle.

[0037] Figure 5 For the present invention Figure 2 Enlarged schematic diagram of section B in the middle.

[0038] Figure 6 For the present invention Figure 2 Enlarged schematic diagram of the C-section structure.

[0039] Figure 7 For the present invention Figure 2 Enlarged schematic diagram of the structure of section D in the middle.

[0040] Figure reference numerals: 1. Device body; 2. Blade; 3. Drive component; 4. Adjustment component; 401. Screw; 402. Turntable; 403. Ball A; 404. Push rod B; 5. Spraying mechanism; 501. Liquid storage tank; 502. Push plate A; 503. Pipe B; 504. Push plate B; 505. Push rod A; 6. Rotating shaft A; 7. Rotating shaft B; 8. Conveying mechanism; 801. Moving roller; 802. Support roller; 803. Belt; 9. Fixing component; 901. Timer; 902. Square tube A; 903. Slide plate A; 904. Electromagnet; 10. Positioning component; 1001. Roller; 1002. Slide plate B; 1003. Square tube B; 11. Pipe A; 12. Transmission pair; 13. Elastic element A; 14. Mounting frame. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0042] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0043] Please see Figure 1 , Figure 2 , Figure 4 as well as Figure 5According to one embodiment of the present invention, a brushed surface device for a computer top cover includes a device body 1 and a conveying mechanism 8, and further includes:

[0044] A wire-drawing mechanism, connected to the device body 1, is used to perform a wire-drawing process on the surface of the computer top cover; and

[0045] Spraying mechanism 5, connected to wire drawing mechanism, is used to lubricate and cool the surface of the computer cover.

[0046] The wire drawing mechanism includes a blade 2, a drive component 3, a rotating shaft A6, a rotating shaft B7, and an adjustment component 4. The drive component 3 is fixedly connected to the device body 1. The drive component 3 is connected to the rotating shaft B7, which is rotatably connected to the device body 1, through a transmission pair 12. The rotating shaft A6 and the rotating shaft B7 are in sliding fit. The blade 2 is fixedly connected to the rotating shaft A6. The rotating shaft A6 is connected to the spraying mechanism 5 through an elastic element A13.

[0047] Adjustment component 4 includes screw 401, push rod B404 and tilting unit. Screw 401 is threadedly connected to device body 1, and push rod B404 is fixedly connected to rotating shaft A6.

[0048] The driving component 3 drives the rotating shaft A6 to rotate horizontally via the rotating shaft B7. The rotating shaft A6 drives the blade 2 to rotate. At the same time, the screw 401 pushes the tilting unit to rotate vertically. The elastic element A13 pushes the rotating shaft A6 to move linearly horizontally along the rotating shaft B7. The rotating shaft A6 pushes the push rod B404 to abut against the tilting unit, causing the rotating shaft A6 to move linearly reciprocating in the horizontal direction. Meanwhile, the rotating shaft A6 changes the spray intensity of the spraying mechanism 5 through its own motion thread, thereby achieving various brushing treatments on the surface of the computer cover.

[0049] Preferably, the driving component 3 is either a hand crank or a motor.

[0050] Preferably, the elastic element A13 is any one of a spring, a compression spring, and an elastic steel plate.

[0051] Preferably, the drive component 3 is fixedly connected to the device body 1 via the mounting bracket 14. The purpose of this arrangement is to fix the drive component 3 to the device body 1, so that the drive component 3 can stably drive the rotating shaft B7 to rotate in the horizontal direction.

[0052] Preferably, the output shaft of the drive component 3 is connected to the rotating shaft B7, which is rotatably connected to the device body 1, via a coupling (not shown in the figure). The purpose of this arrangement is to stably transmit the rotational motion of the output shaft of the drive component 3 in the horizontal direction to the rotating shaft B7 using the coupling.

[0053] Preferably, the tilting unit includes a turntable 402 and a sphere A403. The turntable 402 is movably connected to the sphere A403, the sphere A403 is fixedly connected to the rotating shaft B7, and the turntable 402 is movably connected to the screw 401. Under the horizontal push of the screw 401, the turntable 402 slides along the surface of the sphere A403. By rotating vertically along the sphere A403, the turntable 402 tilts the contact surface with the push rod B404, thereby achieving the technical effect of causing the rotating shaft A6 to move linearly in the horizontal direction.

[0054] Preferably, the turntable 402 is movably connected to a connecting ball (not shown in the figure) fixedly connected to the screw 401, and the connecting ball is embedded in the turntable 402. The purpose of this arrangement is to enable 401 to drive 402 to rotate without detaching from 402.

[0055] In this embodiment of the invention, the conveying mechanism 8 can fix the computer top cover and drive it to make linear motion in the horizontal direction. At this time, the driving member 3 drives the rotating shaft A6 to rotate in the horizontal direction through the rotating shaft B7. The rotating shaft A6 drives the blade 2 to rotate. At the same time, the screw 401 pushes the tilting unit to rotate in the vertical direction. The elastic member A13 pushes the rotating shaft A6 to make linear motion in the horizontal direction along the rotating shaft B7. The rotating shaft A6 pushes the push rod B404 to abut against the tilting unit to make the rotating shaft A6 make linear reciprocating motion in the horizontal direction. At the same time, the rotating shaft A6 changes the spray intensity of the spraying mechanism 5 through its own motion thread to realize various wire drawing treatments on the surface of the computer top cover.

[0056] Please see Figures 1-4 As an embodiment of the present invention, the spraying mechanism 5 includes a liquid storage cylinder 501 and a push plate A502. The push plate A502 is slidably engaged with the liquid storage cylinder 501. The liquid storage cylinder 501 is rotatably connected to the rotating shaft B7. The push plate A502 is threadedly connected to the rotating shaft B7. The liquid storage cylinder 501 is fixedly connected to the device body 1 through a support frame (not shown in the figure). It also includes:

[0057] An inlet component is connected to the liquid storage tank 501 and is used to introduce liquid into the liquid storage tank 501.

[0058] The discharge component, connected to the liquid reservoir 501, is used to discharge liquid into the liquid reservoir 501; and

[0059] The actuating component is connected to the liquid storage tank 501 and is used to change the internal air pressure of the liquid storage tank 501.

[0060] Preferably, the inlet assembly includes a pipe A11 and a one-way valve (not shown in the figure). The one-way valve is embedded in and fixedly connected to the pipe A11, and the pipe A11 passes through and is fixedly connected to the liquid storage tank 501. The purpose of this arrangement is to introduce external liquid into the liquid storage tank 501, while the one-way valve ensures that the liquid in the pipe A11 does not flow back, thus guaranteeing the airtightness of the entire liquid storage tank 501.

[0061] Preferably, the output component includes a pipe B503 and a nozzle (not shown in the figure). The nozzle is threadedly connected to the pipe B503, and the pipe B503 passes through the liquid storage cylinder 501 and is fixedly connected to the liquid storage cylinder 501. The purpose of this arrangement is to guide the liquid in the liquid storage cylinder 501 into the pipe B503 and spray it through the nozzle onto the wire drawing area of ​​the computer top cover.

[0062] Preferably, the pushing component includes a push plate B504 and a push rod A505. The push plate B504 and the push rod A505 are fixedly connected, and both the push plate B504 and the push rod A505 are slidably engaged with the liquid storage cylinder 501. The push rod A505 is fixedly connected to the rotating shaft A6. The push rod A505 moves linearly in the horizontal direction by being pushed by the rotating shaft A6, and the rotating shaft A6 pushes the push plate B504 to move linearly reciprocatingly along the liquid storage cylinder 501, thereby achieving the technical effect of changing the internal air pressure of the liquid storage cylinder 501.

[0063] In this embodiment of the invention, the pushing component moves linearly and reciprocally along the liquid storage cylinder 501 in the horizontal direction under the push of the rotating shaft A6. At the same time, the pushing component changes the air pressure inside the liquid storage cylinder 501 to transport the liquid introduced into the liquid storage cylinder 501 by the inlet component to the outlet component, and uses the outlet component to spray the liquid onto the wire drawing part of the computer cover for lubrication and cooling.

[0064] Please see Figure 1 , Figure 2 as well as Figure 4 As an embodiment of the present invention, the conveying mechanism 8 includes a moving roller 801, a support roller 802, and a fixed roller (not shown in the figure). The moving roller 801, the support roller 802, and the fixed roller are arranged horizontally on the device body 1 in a linear sequence and are rotatably connected to the device body 1. The moving roller 801, the support roller 802, and the fixed roller are connected by a belt 803 for transmission. The mechanism also includes:

[0065] The fixing component 9, connected to the belt 803, is used to limit the movement of the computer top cover.

[0066] Preferably, the fixing component 9 includes a timer 901, a square tube A902, a sliding plate A903, and an electromagnet 904. The electromagnet 904 is embedded in and fixedly connected to the sliding plate A903. The sliding plate A903 slides in conjunction with the square tube A902. A linear motion component (not shown in the figure) is provided inside the square tube A902. An elastic component B is fixedly connected to the square tube A902 and the sliding plate A903. The timer 901 is fixedly connected to the square tube A902. The electromagnet 904 is electrically connected to the timer 901. The square tube A902 is fixedly connected to the belt 803. The electric telescopic rod pushes the sliding plate A903 to move linearly along the square tube A902. At the same time, the timer 901 controls the electromagnet 904 to attract the computer cover plate. The purpose of this arrangement is to limit and fix the computer cover plate.

[0067] Preferably, the linear motion component is any one of an electric telescopic rod, a hydraulic cylinder, and a pneumatic cylinder.

[0068] In this embodiment of the invention, the fixing component 9 confines the computer cover plate on the moving roller 801. The moving roller 801 drives the belt 803 to rotate in an elliptical motion trajectory in the horizontal direction through the cooperation of the fixed roller and the support roller 802. At the same time, the belt 803 drives the computer cover plate to move linearly in the horizontal direction, thereby achieving the technical effect of conveying the computer cover plate to the wire drawing mechanism.

[0069] Please see Figure 1 , Figure 2 as well as Figure 7 As an embodiment of the present invention, the device body 1 is provided with a positioning component for positioning the computer top cover.

[0070] Preferably, the positioning components include a roller 1001, a sliding plate B1002, and a square tube B1003. The roller 1001 is embedded in and rotatably connected to the sliding plate B1002. The sliding plate B1002 and the square tube B1003 are slidably engaged. An elastic element B (not shown in the figure) is provided inside the square tube B1003, and the elastic element B is fixedly connected to the sliding plate B1002 and the square tube B1003. The elastic elements B in the two positioning components each push the sliding plate B1002 to move linearly in opposite directions along the square tube B1003. The two sliding plates B1002 push the roller 1001 to press against the computer cover, thereby achieving the technical effect of positioning the computer cover.

[0071] Preferably, the elastic element A13 is any one of a spring, a compression spring, and an elastic steel plate.

[0072] In this embodiment of the invention, the purpose of this arrangement is to perform positioning processing between the wires drawn on the computer top cover.

[0073] A brushed surface process for a computer top cover based on the above-mentioned device includes the following steps:

[0074] SP1: Place the computer cover plate on the conveyor mechanism 8 for limiting and fixing;

[0075] SP2: The wire drawing mechanism starts the adjustment component 4 to adjust the movement position of the blade 2 according to the wire drawing pattern required by the computer cover plate, so that the blade 2 rotates and performs linear reciprocating motion in the horizontal direction.

[0076] SP3: The spray mechanism 5 synchronously changes the intensity of the liquid sprayed onto the computer cover plate according to the horizontal movement thread of the blade 2.

[0077] SP4: Conveying mechanism 8 conveys the computer cover plate to the wire drawing mechanism for wire drawing.

[0078] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0079] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A computer cover shell surface drawing device, comprising a device body (1) and a conveying mechanism (8), characterized in that: Also includes: A wire drawing mechanism, connected to the device body (1), for performing wire drawing on the surface of the computer cover; as well as A spray mechanism (5), connected to the wire drawing mechanism, is used to lubricate and cool the surface of the computer cover; The wire drawing mechanism comprises a blade (2), a driving member (3), a rotating shaft A (6), a rotating shaft B (7) and an adjusting assembly (4), wherein the driving member (3) is connected to the device body (1), the driving member (3) is connected to the rotating shaft B (7) rotatably connected to the device body (1) through a transmission pair (12), the rotating shaft A (6) and the rotating shaft B (7) are slidably matched, the blade (2) is connected to the rotating shaft A (6), and the rotating shaft A (6) is connected to the spray mechanism (5) through an elastic member A (13); The adjustment assembly (4) comprises a screw (401), a push rod B (404) and a tilting unit, wherein the screw (401) is threadedly connected to the device body (1), and the push rod B (404) is connected to the rotating shaft A (6); The driving member (3) drives the rotating shaft A (6) to rotate in the horizontal direction through the rotating shaft B (7), and the rotating shaft A (6) drives the blade (2) to rotate. At the same time, the screw (401) drives the tilting unit to rotate in the vertical direction. The elastic member A (13) drives the rotating shaft A (6) to perform linear motion in the horizontal direction along the rotating shaft B (7). The rotating shaft A (6) pushes the push rod B (404) to contact the tilting unit to cause the rotating shaft A (6) to perform linear reciprocating motion in the horizontal direction. At the same time, the rotating shaft A (6) changes the spraying intensity of the spraying mechanism (5) through its own moving thread, thereby realizing a variety of wire drawing treatments on the surface of the computer cover; The tilting unit comprises a turntable (402) and a sphere A (403), wherein the turntable (402) is movably connected to the sphere A (403), the sphere A (403) is connected to a rotating shaft B (7), and the turntable (402) is movably connected to a screw rod (401); the turntable (402) slides along the surface of the sphere A (403) under the horizontal push of the screw rod (401), and the turntable (402) rotates vertically along the sphere A (403) to tilt the contact surface between the turntable (402) and the push rod B (404), thereby causing the rotating shaft A (6) to perform linear motion in the horizontal direction.

2. The computer upper cover shell surface drawing device according to claim 1, characterized in that: The device body (1) is provided with a positioning component for positioning the upper cover of the computer.

3. The computer upper cover shell surface drawing device according to claim 1, characterized in that: The spray mechanism (5) comprises a liquid storage cylinder (501) and a push plate A (502), wherein the push plate A (502) and the liquid storage cylinder (501) are slidably matched, the liquid storage cylinder (501) is rotatably connected to the rotating shaft B (7), the push plate A (502) and the rotating shaft B (7) are threadedly connected, the liquid storage cylinder (501) is connected to the device body (1) via a support frame, and further comprises: An introduction component connected to the liquid storage cylinder (501) and used for introducing liquid into the liquid storage cylinder (501); A guide assembly connected to the liquid storage cylinder (501) and used for guiding the liquid out of the liquid storage cylinder (501); and The pushing assembly is connected to the liquid storage cylinder (501) and is used to change the internal air pressure of the liquid storage cylinder (501).

4. The computer upper cover shell surface drawing device according to claim 1, characterized in that: The conveying mechanism (8) comprises a movable roller (801), a supporting roller (802) and a fixed roller, wherein the movable roller (801), the supporting roller (802) and the fixed roller are arranged in sequence in a linear manner and are horizontally arranged on the device body (1) and are rotatably connected to the device body (1), and the movable roller (801), the supporting roller (802) and the fixed roller are connected by a belt (803) for transmission, and further comprises: The fixing assembly (9) is connected to the belt (803) and is used to limit the position of the upper cover of the computer.

5. The computer upper cover shell surface drawing device according to claim 2, characterized in that: The positioning assembly comprises a roller (1001), a slide plate B (1002) and a square cylinder B (1003); the roller (1001) is embedded in the slide plate B (1002) and is rotatably connected to the slide plate B (1002); the slide plate B (1002) and the square cylinder B (1003) are slidably matched; an elastic member B is arranged inside the square cylinder B (1003); the elastic member B is connected to the slide plate B (1002) and the square cylinder B (1003).

6. The computer upper cover shell surface drawing device according to claim 3, characterized in that: The introduction component comprises a pipeline A (11) and a one-way valve, wherein the one-way valve is embedded in the pipeline A (11) and connected to the pipeline A (11), and the pipeline A (11) passes through the liquid storage cylinder (501) and is connected to the liquid storage cylinder (501).

7. The computer upper cover shell surface drawing device according to claim 3, characterized in that: The pushing assembly includes a push plate B (504) and a push rod A (505), wherein the push plate B (504) is connected to the push rod A (505), and both the push plate B (504) and the push rod A (505) are slidably matched with the liquid storage cylinder (501), and the push rod A (505) is connected to the rotating shaft A (6).

8. The computer upper cover shell surface drawing device according to claim 4, characterized in that: The fixing assembly (9) comprises a timer (901), a square cylinder A (902), a slide plate A (903) and an electromagnet (904); the electromagnet (904) is embedded in and connected to the slide plate A (903); the slide plate A (903) and the square cylinder A (902) are slidably matched; a linear moving part is arranged in the square cylinder A (902); the elastic part B is connected to the square cylinder A (902) and the slide plate A (903); the timer (901) is connected to the square cylinder A (902); the electromagnet (904) is electrically connected to the timer (901); and the square cylinder A (902) is connected to a belt (803).

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