Device for preventing bubble generation of polyurethane developing roller
By designing a device that integrates a U-shaped table, agitating tank, an ultrasonic generator and agitating assembly, the problem of bubble generation in the production of traditional polyurethane development rollers is solved, and the surface of the development roller is flat, the developer distribution is uniform and the service life of the development roller is extended.
Patent Information
- Application Number
- CN202421914905.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-08
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-08-08
AI Technical Summary
The traditional polyurethane development roller production device cannot effectively prevent the generation of air bubbles, resulting in uneven surface of the development roller, affecting the uniform distribution of the developer, resulting in blurred image and chromatic aberration problems, and accelerating the wear of the development roller.
A device including a U-shaped table, a stirring tank, an ultrasonic generator and a stirring assembly is designed. The mixing column and spiral blades are driven by the reducer motor for low-speed stirring, combined with the ultrasonic generator to rupture the bubbles, reduce the agitating tank lifting assembly to prevent sputtering, and prevent the generation of polyurethane bubbles by electric heating and curing assembly.
It effectively reduces the bubble generation of polyurethane during mixing and curing, ensures that the surface of the developing roller is flat, improves the developer distribution, avoids image blur and chromatic aberration problems, and extends the service life of the developing roller.
Smart Images
Figure CN222918533U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of preventing the generation of polyurethane bubbles, in particular to a device for preventing the generation of bubbles on a polyurethane developing roller. Background Art
[0002] A developing roller is a key component of a printer and a copier, mainly used for image transfer during the developing process. The polyurethane developing roller is made of high-performance polyurethane material and has good mechanical strength, wear resistance and chemical stability.
[0003] In the traditional production device of the polyurethane developing roller, there is a problem that bubbles cannot be prevented. When mixing polyurethane components, the stirring is uneven, which will lead to a large number of bubbles. And when pouring polyurethane into the developing roller mold, the pouring height is too high, resulting in the sputtering of polyurethane in the developing roller mold, thus generating bubbles again. The bubbles will cause the surface of the developing roller to be uneven, which will affect the uniform distribution of the developer (such as toner) on the paper or other media. Due to the uneven distribution of the developer, the printed image may be blurred and unclear, and the developing effects in different areas are inconsistent, resulting in color difference problems. The bubbles on the surface of the developing roller will cause local pressure concentration, thus accelerating the wear speed of the developing roller. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a device for preventing the generation of bubbles on a polyurethane developing roller, so as to solve the problem that bubbles cannot be prevented in the background art.
[0005] To achieve the above purpose, the utility model provides the following technical solutions:
[0006] A device for preventing the generation of bubbles on a polyurethane developing roller, comprising:
[0007] A U-shaped table;
[0008] A stirring tank; the stirring tank is arranged above the U-shaped table;
[0009] An ultrasonic generator; the ultrasonic generator is arranged on one side of the U-shaped table; the ultrasonic generating end of the ultrasonic generator is arranged inside the stirring tank;
[0010] It further includes a stirring component, the stirring component includes a reduction motor, the reduction motor is arranged on the top of the stirring tank, the output end of the reduction motor is provided with a stirring column, the stirring column is rotatably connected to the inside of the stirring tank, the outer surface of the stirring column is provided with spiral blades, and lifting components for lifting the stirring tank are arranged around the stirring tank.
[0011] On the basis of the above technical solutions, the utility model further provides the following optional technical solutions:
[0012] In an alternative solution: The lifting assembly includes bumps provided around the mixing tank. An electric telescopic rod is provided inside the bumps. A support leg is also slidably connected inside the bumps. A fixing block is fixedly connected to the middle-upper part of the support leg, and the output end of the electric telescopic rod is fixedly connected to the bottom of the fixing block.
[0013] In an alternative solution: A moving assembly for moving the developing roller mold is provided inside the U-shaped table. The moving assembly includes belt rollers. Both belt rollers are rotatably connected inside the notch of the U-shaped table. A conveyor belt is provided between the two belt rollers. A first motor is provided inside the U-shaped table. A first rotating gear is provided at the output end of the first motor. The first rotating gear meshes with a second rotating gear, and the inside of the second rotating gear is fixedly connected to the belt roller.
[0014] In an alternative solution: A curing assembly for curing the polyurethane inside the developing roller mold is provided on the top of the U-shaped table. The curing assembly includes a second motor provided above the U-shaped table. A threaded rod is provided at the output end of the second motor. The bottom of the threaded rod is rotatably connected to the top of the U-shaped table. A slider is threadedly connected to the outer surface of the threaded rod. A limiting rod is also slidably connected inside the slider. The base of the limiting rod is fixedly connected to the top of the U-shaped table. A limiting plate is provided at the top of the limiting rod. A support box is provided on the side of the slider away from the threaded rod. A number of electric heating tubes are provided inside the support box.
[0015] In an alternative solution: A cooling assembly for cooling the developing roller mold is also provided on the top of the U-shaped table. The cooling assembly includes blowers provided on both sides of the top of the U-shaped table. A number of exhaust ducts are provided at the output ends of the blowers.
[0016] In an alternative solution: Feed ports are provided on both sides of the top of the mixing tank.
[0017] In an alternative solution: A support plate is provided at the bottom of the support leg.
[0018] In an alternative solution: A discharge pipe is provided at the bottom of the mixing tank, and a solenoid valve is provided on the discharge pipe.
[0019] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0020] 1. The present utility model drives the mixing column and the spiral blades to rotate through a reduction motor, achieving the effect of slow and uniform stirring when mixing polyurethane components. In the case of low speed, a large amount of air can be prevented from entering the material, and the generation of bubbles can be reduced during the mixing stage.
[0021] 2. By starting the electric telescopic rod, the present utility model drives the convex block to slide on the outer surface of the support leg, achieving the effect of driving the mixing tank to lift, and preventing polyurethane from splashing and generating new bubbles due to the excessive distance between the discharge pipe and the developing roller die.
[0022] 3. By starting the ultrasonic generator, the present utility model makes the bubbles burst through the ultrasonic vibration energy, achieving the effect of eliminating the bubbles inside the mixing tank, having a good removal effect on micro-bubbles, and preventing the production of micro-bubbles. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 is a structural schematic diagram of the present utility model.
[0024] Figure 2 is a sectional view of the mixing tank structure of the present utility model.
[0025] Figure 3 is a structural schematic diagram of the moving component of the present utility model.
[0026] Figure 4 is a sectional view of the support box structure of the present utility model.
[0027] Wherein: 100, U-shaped table; 200, mixing tank; 300, ultrasonic generator; 401, reduction motor; 402, mixing column; 403, convex block; 404, electric telescopic rod; 405, support leg; 501, belt roller; 502, conveyor belt; 503, first motor; 504, first rotating gear; 505, second rotating gear; 601, second motor; 602, threaded rod; 603, slider; 604, support box; 605, electric heating tube; 701, blower; 702, exhaust duct. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0028] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.
[0029] In one embodiment, as Figures 1-4As shown in the figure, a device for preventing the generation of air bubbles in a polyurethane developing roller includes: a U-shaped table 100, a stirring tank 200, an ultrasonic generator 300, and a stirring assembly. The stirring tank 200 is arranged above the U-shaped table 100; the ultrasonic generator 300 is arranged on one side of the U-shaped table 100; the ultrasonic generating end of the ultrasonic generator 300 is arranged inside the stirring tank 200; the stirring assembly includes a reduction motor 401, the reduction motor 401 is arranged on the top of the stirring tank 200, the output end of the reduction motor 401 is provided with a stirring column 402, the stirring column 402 is rotatably connected to the inside of the stirring tank 200, the outer surface of the stirring column 402 is provided with spiral blades, and lifting assemblies for lifting the stirring tank 200 are arranged around the stirring tank 200. By starting the reduction motor 401, it drives the stirring column 402 and the spiral blades to rotate at a low speed, so as to stir the polyurethane mixed raw materials inside the stirring tank 200.
[0030] In one embodiment, as Figure 1 and Figure 2 shown, the lifting assembly includes a convex block 403, the convex block 403 is arranged around the stirring tank 200, an electric telescopic rod 404 is arranged inside the convex block 403, a support leg 405 is also slidably connected inside the convex block 403, a fixed block is fixedly connected to the middle and upper part of the support leg 405, and the output end of the electric telescopic rod 404 is fixedly connected to the bottom of the fixed block. By starting the electric telescopic rod 404, it moves closer to or away from the fixed block, thereby driving the convex block 403 to slide up and down on the outer surface of the support leg 405, and the convex block 403 drives the stirring tank 200.
[0031] In one embodiment, as Figure 1 and Figure 3 shown, a moving assembly for moving the developing roller mold is arranged inside the U-shaped table 100. The moving assembly includes belt rollers 501, both of the two belt rollers 501 are rotatably connected inside the notch of the U-shaped table 100, a conveyor belt 502 is arranged between the two belt rollers 501, a first motor 503 is arranged inside the U-shaped table 100, a first rotating gear 504 is arranged at the output end of the first motor 503, the first rotating gear 504 meshes with a second rotating gear 505, and the inside of the second rotating gear 505 is fixedly connected to the belt roller 501. By starting the first motor 503, it drives the first rotating gear 504 to rotate, thereby driving the second rotating gear 505, so that the belt roller 501 drives the conveyor belt 502 to rotate.
[0032] In one embodiment, as Figure 1 and Figure 4As shown, a curing assembly for curing the polyurethane inside the developing roller mold is provided at the top of the U-shaped table 100. The curing assembly includes a second motor 601. The second motor 601 is arranged above the U-shaped table 100. A threaded rod 602 is provided at the output end of the second motor 601. The bottom of the threaded rod 602 is rotatably connected to the top of the U-shaped table 100. A slider 603 is threadedly connected to the outer surface of the threaded rod 602. A limiting rod is also slidably connected inside the slider 603. The base of the limiting rod is fixedly connected to the top of the U-shaped table 100. A limiting plate is provided at the top of the limiting rod. A support box 604 is provided on one side of the slider 603 away from the threaded rod 602. A plurality of electric heating tubes 605 are provided inside the support box 604. By starting the second motor 601, it drives the threaded rod 602 to rotate. Under the limitation of the limiting rod, it drives the slider 603 to move horizontally up and down, thereby driving the support box 604 and the electric heating tubes 605 to move up and down.
[0033] In one embodiment, as Figure 1 shown, a cooling assembly for cooling the developing roller mold is also provided at the top of the U-shaped table 100. The cooling assembly includes a blower 701. The blower 701 is arranged on both sides of the top of the U-shaped table 100. A plurality of exhaust ducts 702 are provided at the output end of the blower 701. By starting the blower 701, it conveys air from the input end to the exhaust ducts 702 at the output end.
[0034] In one embodiment, as Figure 1 and Figure 2 shown, feeding ports are provided on both sides of the top of the mixing tank 200. It is convenient to add polyurethane raw materials into the mixing tank 200 through the feeding ports.
[0035] In one embodiment, as Figure 1 and Figure 2 shown, a support plate is provided at the bottom of the support leg 405 to increase the contact area with the ground, thereby enhancing the support effect.
[0036] In one embodiment, as Figure 2 shown, a discharge pipe is provided at the bottom of the mixing tank 200. An electromagnetic valve is provided on the discharge pipe. The mixed polyurethane is discharged through the discharge pipe, and the electromagnetic valve controls its opening and closing.
[0037] The above embodiments disclose a device for preventing the generation of air bubbles in a polyurethane developing roller. Among them, polyurethane raw materials are added into the interior of the stirring tank 200 through the feeding port. Subsequently, the reduction motor 401 is started, which drives the stirring column 402 and the spiral blades to rotate at a low speed, thereby stirring the polyurethane mixed raw materials inside the stirring tank 200. Through low-speed and uniform stirring, since it is in a low-speed state, a large amount of air can be prevented from entering the materials, and the generation of air bubbles can be reduced during the mixing stage. When stirring, the ultrasonic generator 300 can also be started, which causes the air bubbles to burst through the ultrasonic vibration energy, thereby eliminating the internal air bubbles and having a good effect on removing micro air bubbles. Subsequently, after the stirring is completed, the electric telescopic rod 404 is started to move closer to or away from the fixed block, thereby driving the convex block 403 to slide up and down on the outer surface of the support leg 405. The convex block 403 drives the stirring tank 200 to lift or lower, causing the discharge pipe to approach the conveyor belt 502. Subsequently, a developing roller mold is placed on the conveyor belt 502. Then, the polyurethane inside the stirring tank 200 is discharged through the discharge pipe by the solenoid valve. By reducing the distance between the discharge pipe and the developing roller mold, the sputtering of polyurethane is prevented, thereby avoiding the generation of new air bubbles. Subsequently, by starting the first motor 503, it drives the first rotating gear 504 to rotate, thereby driving the second rotating gear 505, and then the belt roller 501 drives the conveyor belt 502 to rotate, driving the developing roller mold to move. When it moves below the electric heating tube 605, by starting the second motor 601, it drives the threaded rod 602 to rotate. Under the limitation of the limiting rod, it drives the slider 603 to move horizontally up and down, thereby driving the support box 604 and the electric heating tube 605 to lift or lower, covering the developing roller mold with the support box 604. Subsequently, the electric heating tube 605 is started, so that the polyurethane in the developing roller mold can be cured under a suitable constant temperature state, preventing the generation of air bubbles. After the curing is completed, the second motor 601 is started again to drive the electric heating tube 605 away from the developing roller mold, and it continues to move. When it moves to the position of the blower 701, by starting the blower 701, the air is conveyed from the input end to the exhaust duct 702 at the output end, and then the mold is cooled through the exhaust duct 702, enabling the operator to take it.
[0038] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed in the present application can easily think of changes or substitutions, which should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A device for preventing the generation of bubbles in a polyurethane developing roller, comprising: U-shaped table (100); A stirring tank (200); the stirring tank (200) is arranged above the U-shaped platform (100); An ultrasonic generator (300); the ultrasonic generator (300) is arranged on one side of the U-shaped platform (100); an ultrasonic generating end of the ultrasonic generator (300) is arranged inside the stirring tank (200); The invention is characterized in that it also includes a stirring component, wherein the stirring component includes a reduction motor (401), the reduction motor (401) is arranged on the top of the stirring tank (200), a stirring column (402) is arranged at the output end of the reduction motor (401), the stirring column (402) is rotatably connected to the inside of the stirring tank (200), a spiral blade is arranged on the outer surface of the stirring column (402), and a lifting component for lifting the stirring tank (200) is arranged around the stirring tank (200).
2. A device for preventing the generation of bubbles in a polyurethane developing roller according to claim 1, characterized in that: The lifting assembly comprises a protrusion (403), the protrusion (403) being arranged around the stirring tank (200), an electric telescopic rod (404) being arranged inside the protrusion (403), a supporting leg (405) being slidably connected inside the protrusion (403), a fixing block being fixedly connected to the middle and upper part of the supporting leg (405), and an output end of the electric telescopic rod (404) being fixedly connected to the bottom of the fixing block.
3. The device for preventing the generation of bubbles in a polyurethane developing roller according to claim 1, characterized in that: A moving assembly for moving the developing roller mould is provided inside the U-shaped platform (100), the moving assembly comprising a belt roller (501), the two belt rollers (501) are both rotatably connected to the notch of the U-shaped platform (100), a transmission belt (502) is provided between the two belt rollers (501), a first motor (503) is provided inside the U-shaped platform (100), a first rotating gear (504) is provided at the output end of the first motor (503), the first rotating gear (504) is meshed with a second rotating gear (505), and the second rotating gear (505) is fixedly connected to the belt roller (501) inside.
4. The device for preventing the generation of bubbles in a polyurethane developing roller according to claim 1, characterized in that: A curing assembly for curing the polyurethane inside the developing roller mould is provided at the top of the U-shaped platform (100), the curing assembly comprising a second motor (601), the second motor (601) being provided above the U-shaped platform (100), a threaded rod (602) being provided at the output end of the second motor (601), the bottom of the threaded rod (602) being rotatably connected to the top of the U-shaped platform (100), a slider (603) being threadedly connected to the outer surface of the threaded rod (602), a limit rod being slidably connected inside the slider (603), the limit rod base being fixedly connected to the top of the U-shaped platform (100), a limit plate being provided at the top of the limit rod, a support box (604) being provided on a side of the slider (603) away from the threaded rod (602), a plurality of electric heating tubes (605) being provided inside the support box (604).
5. The device for preventing the generation of bubbles in a polyurethane developing roller according to claim 1, characterized in that: A cooling assembly for cooling the developing roller mould is also provided on the top of the U-shaped platform (100), wherein the cooling assembly comprises a fan (701), the fan (701) being provided on both sides of the top of the U-shaped platform (100), and a plurality of exhaust pipes (702) are provided at the output end of the fan (701).
6. The device for preventing the generation of bubbles in a polyurethane developing roller according to claim 1, characterized in that: Both sides of the top of the stirring tank (200) are provided with feed inlets.
7. The device for preventing the generation of bubbles in a polyurethane developing roller according to claim 2, characterized in that: A support plate is provided at the bottom of the support leg (405).
8. The device for preventing the generation of bubbles in a polyurethane developing roller according to claim 1, characterized in that: A discharge pipe is provided at the bottom of the stirring tank (200), and a solenoid valve is provided on the discharge pipe.