A spraying device for producing a projection screen

Abstract

The utility model discloses a kind of spraying equipment for projection screen production, it is related to spraying equipment field, including mounting bracket, the inside of mounting bracket is provided with first drive assembly, and the bottom of first drive assembly is provided with fixed frame, the inside of fixed frame is installed with second motor, the output of second motor is provided with screw rod, the outer wall of screw rod is equipped with sliding block, and the side of sliding block is fixed with fixed rod, and the side of fixed rod is installed with automatic spray head. The utility model solves the problem that the projection screen air-drying time is longer when the existing projection screen spraying equipment works, when first drive assembly drives spray head to move, gear and rack contact to drive first blade and second blade to rotate, and the first blade and second blade of rotation dry the projection screen after spraying, and the wind through heating wire is heated, and the drying effect of hot air on projection screen is better, and the working efficiency of spraying is improved.

Description

Technical Field

[0001] This utility model relates to the field of spraying equipment, specifically a spraying equipment for producing projection screens. Background Technology

[0002] A projection screen is a surface material used for projection displays. It is usually made of special fabrics, plastics, or other synthetic materials to enhance the display effect of projected images. By providing a smooth, reflective surface, it makes the projected image clearer and brighter, avoiding color differences or distortions that may occur when projecting directly onto a wall. Projection screens are widely used in home theaters, conference rooms, classrooms, cinemas, and other places. Depending on the purpose, there are various types, such as manual screens, electric screens, and fixed frame screens. During the production of projection screens, a special reflective coating needs to be sprayed onto their surface, and spraying equipment is required for this process.

[0003] Existing spraying equipment uses a control system to move the spray gun. However, after spraying, the coating needs to be allowed to air dry naturally, which takes a long time. If the projection screen is moved after spraying, the reflective coating on its surface is easily damaged, rendering the projection screen unusable. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a spraying equipment for the production of projection screens, so as to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a spraying device for producing projection screens, comprising a mounting frame, a first driving component disposed inside the mounting frame, and a fixed frame disposed at the bottom of the first driving component, a second motor disposed inside the fixed frame, a lead screw disposed at the output end of the second motor, a slider sleeved on the outer wall of the lead screw, a fixed rod fixed on one side of the slider, an automatic spray head disposed on one side of the fixed rod, a speed-changing gearbox fixed on one side of the fixed frame, an input rod and an output rod disposed on both sides of the speed-changing gearbox, a gear fixed at the end of the input rod, and a first blade disposed at the end of the output rod, a fixed frame disposed at the bottom of the speed-changing gearbox, a heating wire disposed inside the fixed frame, and a rack fixed on one side of the mounting frame.

[0006] By adopting the above technical solution, the problem of long drying time for projection screens during operation of existing projection screen spraying equipment is solved. When the first drive component moves the nozzle, the gear and rack contact each other, thereby driving the first and second blades to rotate. The rotating first and second blades dry the sprayed projection screen, and the air is heated by the heating wire. The drying effect of the projection screen by hot air is better, thus improving the spraying efficiency.

[0007] The present invention is further configured such that a rotating rod is movably mounted on the bottom of the gearbox, and a second blade is fixed at the end of the rotating rod. A transmission assembly is provided between the rotating rod and the output rod. The transmission assembly includes pulleys fixed to the outer walls of the output rod and the rotating rod, and belts are sleeved on the outer walls of the two sets of pulleys.

[0008] Preferably, when the output rod rotates, it drives the pulley to rotate, which in turn drives another set of pulleys to rotate. The rotation of the pulleys drives the rotating rod to rotate, which in turn drives the second blade to rotate. At the same time, the heating wire works. The first blade rotates clockwise, and the second blade rotates counterclockwise. The clockwise rotating first blade blows air, and the blown air passes through the heating wire and reaches the surface of the sprayed screen to dry the screen.

[0009] The present invention is further configured such that multiple sets of connecting rods are fixed on both sides of the fixed frame, and the ends of the connecting rods are fixedly connected to the gearbox.

[0010] Preferably, the connecting rods can be used to fix the frame in place, preventing the frame from being suspended in mid-air.

[0011] The present invention is further configured such that the first drive assembly includes two sets of sprockets installed inside the mounting frame, a first motor is provided on one side of one set of sprockets, and a chain is sleeved on the outer wall of the two sets of sprockets.

[0012] Preferably, the first motor is started, which drives the sprocket to rotate. When the sprocket rotates, it drives the chain to move, which in turn drives the fixed frame to move. The automatic spray head then operates to spray paint. The fixed frame moves along the X-axis, which in turn drives the automatic spray head to perform the spraying operation.

[0013] The present invention is further configured such that a fixing block is fixed to the outer wall of the chain, and the fixing block is fixedly connected to the fixing frame.

[0014] Preferably, the chain moves, causing the fixed frame to move, which in turn adjusts the position of the automatic nozzle.

[0015] The present invention is further provided that the outer wall of the fixing frame is provided with a sliding groove.

[0016] Preferably, the groove allows the slider to slide easily inside, thus limiting the slider's position.

[0017] The present invention is further configured such that the middle part of the fixing frame is hollow, and the heating wire is irregularly arranged.

[0018] Preferably, the hollow frame facilitates gas passage, and the irregularly arranged heating wires increase the contact area with the gas, thus generating more heat when the gas passes through.

[0019] The present invention is further configured such that a control box is mounted on one side of the mounting bracket.

[0020] Preferably, the control box allows for convenient control of the first motor, heating wire, and second motor to open and close, and also allows for setting the stroke of the automatic nozzle.

[0021] In summary, the present invention has the following main advantages:

[0022] 1. This utility model solves the problem of long drying time for projection screens in existing projection screen spraying equipment by setting up a speed-changing gearbox, gears, racks, heating wires, and a fixing frame. When the first drive component moves the nozzle, the gears and racks contact each other, thereby driving the first and second blades to rotate. The rotating first and second blades dry the sprayed projection screen, and the air passes through the heating wire to heat it. The hot air dries the projection screen better and improves the spraying efficiency.

[0023] 2. This utility model is equipped with a first drive assembly, a second motor, and a lead screw. The first motor can drive the nozzle to move to achieve the set spraying length, and the second motor can drive the nozzle to move, which can meet the spraying needs of large curtains and greatly improve production efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is a side view of the present invention;

[0026] Figure 3 This is a connection diagram of the first transmission component of this utility model;

[0027] Figure 4 This is a perspective view of the fixing frame of this utility model;

[0028] Figure 5 This is a schematic diagram showing the connection between the lead screw and the slider of this utility model;

[0029] Figure 6 This is a perspective view of the variable speed gearbox of this utility model.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Mounting bracket; 2. First drive assembly; 21. First motor; 22. Chain; 23. Sprocket; 3. Fixing bracket; 31. Fixing block; 32. Slide groove; 33. Second motor; 34. Slider; 35. Lead screw; 36. Fixing rod; 4. Gearbox; 41. Input rod; 42. Output rod; 43. Rotating rod; 44. First blade; 45. Second blade; 46. Pulley; 47. Belt; 5. Fixing frame; 51. Connecting rod; 52. Heating wire; 6. Automatic nozzle; 7. Gear; 8. Rack; 9. Control box. Detailed Implementation

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0033] The embodiments of this utility model will be described below based on its overall structure.

[0034] First embodiment:

[0035] Please see Figures 1-6 The system includes a mounting frame 1, inside which a first drive assembly 2 is installed. A fixing frame 3 is located at the bottom of the first drive assembly 2. A second motor 33 is installed inside the fixing frame 3. A lead screw 35 is installed at the output end of the second motor 33. A slider 34 is fitted onto the outer wall of the lead screw 35. A fixing rod 36 is fixed to one side of the slider 34. An automatic nozzle 6 is installed on one side of the fixing rod 36. A speed-changing gearbox 4 is fixed to one side of the fixing frame 3. An input rod 41 and an output rod 42 are installed on both sides of the speed-changing gearbox 4. A gear 7 is fixed to the end of the input rod 41, and a first blade 44 is installed to the end of the output rod 42. A fixing frame 5 is located at the bottom of the speed-changing gearbox 4. The gear 7 engages with a rack 8 to drive the gear... When wheel 7 rotates, gear 7 rotates, which drives input rod 41 to rotate. Input rod 41 rotates, which drives output rod 42 to rotate. Output rod 42 rotates, which drives first blade 44 to rotate. Output rod 42 rotates, which drives pulley 46 to rotate. Through the belt, another set of pulleys 46 rotates. The rotation of pulleys drives rotating rod 43 to rotate. Rotating rod 43 rotates, which drives second blade 45 to rotate. At the same time, heating wire 52 works. First blade 44 rotates clockwise, and second blade 45 rotates counterclockwise. The clockwise rotating first blade 44 blows air, and the blown air passes through heating wire 52, thus reaching the surface of the sprayed screen to dry the screen. Heating wire 52 is installed inside the fixing frame 5, and rack 8 is fixed on one side of the mounting bracket 1.

[0036] For details regarding the above embodiments, please refer to [link / reference]. Figure 6A rotating rod 43 is movably mounted on the bottom of the gearbox 4, and a second blade 45 is fixed to the end of the rotating rod 43. A transmission assembly is provided between the rotating rod 43 and the output rod 42. The transmission assembly includes pulleys 46 fixed to the outer walls of the output rod 42 and the rotating rod 43. Belts 47 are sleeved on the outer walls of the two sets of pulleys 46. When the output rod 42 rotates, it drives the pulleys 46 to rotate, which in turn drives the other set of pulleys 46 to rotate. The rotation of the pulleys drives the rotating rod 43 to rotate. When the rotating rod 43 rotates, it drives the second blade 45 to rotate. At the same time, the heating wire 52 works. The first blade 44 rotates clockwise, and the second blade 45 rotates counterclockwise. The clockwise rotating first blade 44 blows air, and the blown air passes through the heating wire 52 to reach the surface of the sprayed curtain and dry the curtain.

[0037] For details regarding the above embodiments, please refer to [link / reference]. Figure 6 Multiple sets of connecting rods 51 are fixed on both sides of the fixed frame 5, and the ends of the connecting rods 51 are fixedly connected to the gearbox 4. The fixed frame 5 can be fixed by the connecting rods 51 to prevent the fixed frame 5 from being suspended.

[0038] For details regarding the above embodiments, please refer to [link / reference]. Figure 4 The outer wall of the fixed frame 3 is provided with a sliding groove 32, which allows the slider 34 to slide inside and limit the slider 34.

[0039] For details regarding the above embodiments, please refer to [link / reference]. Figure 6 The fixing frame 5 is hollow in the middle, and the heating wire 52 is irregularly arranged. The hollow fixing frame 5 facilitates the passage of gas, and the irregularly arranged heating wire increases the contact area with the gas, thereby making the gas generate more heat when it passes through.

[0040] For details regarding the above embodiments, please refer to [link / reference]. Figure 3 A control box 9 is installed on one side of the mounting bracket 1. The control box 9 can be used to easily control the first motor 21, the heating wire and the second motor 33 to open and close, and can also set the stroke of the automatic nozzle 6.

[0041] Second embodiment:

[0042] Please see Figures 1-3 The first drive assembly 2 includes two sets of sprockets 23 installed inside the mounting frame 1. A first motor 21 is provided on one side of each set of sprockets 23. A chain 22 is sleeved on the outer wall of the two sets of sprockets 23. A fixing block 31 is fixed on the outer wall of the chain 22 and is fixedly connected to the mounting frame 3. When the first motor 21 is started, the first motor 21 will drive the sprockets 23 to rotate. When the sprockets 23 rotate, they will drive the chain 22 to move, thereby driving the mounting frame 3 to move. The automatic spray head 6 will work to spray. The mounting frame 3 will move along the X-axis, driving the automatic spray head 6 to perform the spraying work.

[0043] In practical operation, this invention works as follows: During use, the control box 9 controls the starting and stopping of the first motor 21 and the second motor 33, setting values. Then, the first motor 21 is started, driving the sprocket 23 to rotate. The rotation of the sprocket 23 drives the chain 22 to move, thereby moving the fixed frame 3. The automatic spray head 6 then operates for spraying. The fixed frame 3 moves along the X-axis, driving the gearbox 4 to move. The gearbox 4 then drives the gear 7 to move. The gear 7, in conjunction with the rack 8, rotates. The rotation of the gear 7 drives the input rod 41 to rotate, which in turn drives the output rod 42 to rotate. The rotation of the output rod 42 drives the first blade 44 to rotate, which in turn drives the pulley 46 to rotate. This, in turn, drives another set of pulleys 46 via a belt. The rotation of the wheel drives the rotating rod 43 to rotate, which in turn drives the second blade 45 to rotate. At the same time, the heating wire 52 works, the first blade 44 rotates clockwise, and the second blade 45 rotates counterclockwise. The clockwise rotating first blade 44 blows air, which passes through the heating wire 52 and reaches the surface of the sprayed curtain to dry it. When the fixing frame 3 moves to one side of the mounting frame 1, the second motor 33 drives the lead screw 35 to rotate. When the lead screw 35 rotates, it drives the slider 34 to move, thereby adjusting the position of the automatic spray head 6. Then, the first motor 21 reverses to drive the fixing frame 3 to reset. At this time, the gear 7 reverses, the first blade 44 reverses, and the second blade 45 rotates clockwise to dry the curtain. When the fixing frame 3 moves to one side of the mounting frame, the second motor works to adjust the position of the automatic spray head 6 again. Then, the above steps are repeated to achieve the spraying of the curtain.

[0044] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A spraying device for producing projection screens, comprising a mounting frame (1), characterized in that: The mounting bracket (1) is provided with a first drive assembly (2) inside, and a fixed frame (3) is provided at the bottom of the first drive assembly (2). A second motor (33) is installed inside the fixed frame (3). A lead screw (35) is provided at the output end of the second motor (33). A slider (34) is sleeved on the outer wall of the lead screw (35). A fixed rod (36) is fixed on one side of the slider (34). An automatic nozzle (6) is installed on one side of the fixed rod (36). A speed gearbox (4) is fixed on one side of the fixed frame (3). An input rod (41) and an output rod (42) are respectively installed on both sides of the speed gearbox (4). A gear (7) is fixed at the end of the input rod (41). A first blade (44) is installed at the end of the output rod (42). A fixed frame (5) is provided at the bottom of the speed gearbox (4). A heating wire (52) is installed inside the fixed frame (5). A rack (8) is fixed on one side of the mounting bracket (1).

2. The spraying equipment for producing projection screens according to claim 1, characterized in that: A rotating rod (43) is movably mounted on the bottom of the gearbox (4), and a second blade (45) is fixed at the end of the rotating rod (43). A transmission assembly is provided between the rotating rod (43) and the output rod (42).

3. The spraying equipment for producing projection screens according to claim 2, characterized in that: The transmission assembly includes pulleys (46) fixed to the outer walls of the output rod (42) and the rotating rod (43), and belts (47) are fitted on the outer walls of the two sets of pulleys (46).

4. The spraying equipment for producing projection screens according to claim 1, characterized in that: Multiple sets of connecting rods (51) are fixed on both sides of the fixed frame (5), and the ends of the connecting rods (51) are fixedly connected to the gearbox (4).

5. The spraying equipment for producing projection screens according to claim 1, characterized in that: The first drive assembly (2) includes two sets of sprockets (23) installed inside the mounting frame (1). A first motor (21) is provided on one side of one set of sprockets (23), and a chain (22) is sleeved on the outer wall of the two sets of sprockets (23).

6. The spraying equipment for producing projection screens according to claim 5, characterized in that: The outer wall of the chain (22) is fixed with a fixing block (31), and the fixing block (31) is fixedly connected to the fixing frame (3).

7. The spraying equipment for producing projection screens according to claim 1, characterized in that: The outer wall of the fixing frame (3) is provided with a sliding groove (32).

8. The spraying equipment for producing projection screens according to claim 1, characterized in that: The fixed frame (5) is hollow in the middle, and the heating wire (52) is irregularly arranged.

9. The spraying equipment for producing projection screens according to claim 1, characterized in that: A control box (9) is mounted on one side of the mounting bracket (1).

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