White ink pen wipable film and production equipment thereof

Abstract

The invention discloses a water white pen wipable film and production equipment thereof, and belongs to the technical field of wipable films.The water white pen wipable film comprises a bottom plate, universal wheels are arranged at the corners of the lower end of the bottom plate, a storage tank is arranged on one side of the upper end of the bottom plate, a feeding hopper is arranged on the side edge of the upper end of the storage tank, and a stirring and cleaning mechanism is arranged in the center of the upper end of the storage tank; a spraying mechanism is arranged on the other side of the upper end of the bottom plate; the stirring and cleaning mechanism comprises a motor, the motor is arranged in the center of the upper end of the storage tank, a stirring shaft is arranged at the output end of the motor, and long stirring rods are arranged on the surfaces of the two ends of the stirring shaft. And the viscosity of the erasable solution is kept consistent, and the U-shaped cleaning plate synchronously brushes away deposition on the tank wall, so that manual tank opening for cleaning is avoided, the impurity introduction risk is reduced, and the stable coating quality is ensured.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of erasable film, and particularly relates to a water white pen erasable film and a production equipment thereof. BACKGROUND

[0002] The water white pen erasable film is a high polymer film coated with an erasable functional layer, the surface of which can make water-based whiteboard pen ink develop color quickly, and the ink can be completely removed by dry or wet wiping after drying, and the water white pen erasable film is widely used in teaching, office, advertising display and the like.

[0003] However, the existing storage tank is a static tank body, lacks effective stirring and cleaning mechanism, and thus the erasable solution is prone to pigment sedimentation, uneven viscosity, and gradually thickened deposition layer on the tank wall during long-term storage, which affects the coating uniformity, meanwhile, the tank body needs to be opened manually during cleaning, which is time-consuming and laborious and is easy to introduce impurities. In addition, the traditional roller coating is sensitive to the tension of the substrate, and when the film appears local relaxation or deviation, it cannot be corrected in time, resulting in uneven coating thickness; and the equipment only has a single function of "coating", lacks synchronous fixing and precise positioning means for the film surface, and is difficult to meet the needs of high-resolution patterns or narrow margin products, and the above defects directly reduce the yield and production efficiency of the erasable film. SUMMARY

[0004] The application provides a water white pen erasable film and a production equipment thereof, which have the characteristics that the erasable solution can be stirred and mixed, the film surface can be fixed, and the erasable solution can be sprayed on the film surface.

[0005] The technical scheme for solving the above technical problems is as follows: a water white pen erasable film and a production equipment thereof, comprising a bottom plate, a universal wheel is arranged at the lower end corner of the bottom plate, a storage tank is arranged at one side of the upper end of the bottom plate, an inlet hopper is arranged at the upper end side edge of the storage tank, a stirring and cleaning mechanism is arranged at the upper end center position of the storage tank, and a spraying mechanism is arranged at the other side of the upper end of the bottom plate. The stirring and cleaning mechanism comprises a motor, the upper end center position of the storage tank is provided with the motor, the output end of the motor is provided with a stirring shaft, the surfaces of the two ends of the stirring shaft are provided with long stirring rods, and the surface of the center position of the stirring shaft is provided with a short stirring rod.

[0006] Preferably, the stirring and cleaning mechanism further comprises a U-shaped cleaning plate, the lower end of the stirring shaft is provided with the U-shaped cleaning plate, and the side edge of the U-shaped cleaning plate is provided with bristles.

[0007] Preferably, the spraying mechanism comprises a liquid suction pump, the upper end of the bottom plate is provided with the liquid suction pump close to the position of the storage tank, one side of the liquid suction pump is provided with a liquid suction pipe and extends into the inside of the storage tank, the other end of the liquid suction pump is provided with a liquid spraying pipe, the other end of the liquid spraying pipe is provided with a spraying plate, the lower end side of the spraying plate is provided with a plurality of groups of nozzles, and the lower end of the bottom plate is provided with a film surface fixing assembly.

[0008] Preferably, the spraying mechanism further comprises an ear plate, the side edge of the spraying plate is provided with the ear plate, and the lower end of the ear plate is provided with an electric telescopic rod.

[0009] Preferably, the electric telescopic rod is connected with the controller through wires, and the controller controls the two groups of electric telescopic rods to be opened and closed at the same time.

[0010] Preferably, the film surface fixing assembly comprises a fixing cover, the lower end of the bottom plate is provided with the fixing cover, the fixing cover and the bottom plate are fixedly connected through bolts, the lower end of the fixing cover is provided with an air suction pipe, the other end of the air suction pipe is provided with an air suction pump, and a plurality of groups of negative pressure air suction holes are formed in the inside of the bottom plate and located at the upper end of the fixing cover.

[0011] The beneficial effects of the present application are: 1. The present application is provided with the stirring and cleaning mechanism, the motor drives the long and short stirring rods to form a composite flow field, continuously disperses the pigment agglomeration, keeps the viscosity of the erasable solution consistent, synchronously brushes off the deposition on the tank wall through the U-shaped cleaning plate, avoids manual tank opening and cleaning, reduces the risk of impurity introduction, and guarantees the stable coating quality; 2. The present application is provided with the spraying mechanism, the frequency conversion liquid suction pump cooperates with the plurality of groups of fan-shaped nozzles, realizes the accurate control of the 10-50 mu m wet film, the negative pressure air suction hole adsorbs the film flatly, prevents deviation and wrinkle, the electric telescopic rod quickly adjusts the spraying height, adapts to different viscosity liquid, and the yield is improved to more than 99%. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a perspective view of the present application; Figure 2 It is a perspective cut view of the stirring and cleaning mechanism of the present application; Figure 3 It is a perspective view of the spraying mechanism of the present application; Figure 4 It is a perspective view of the film surface fixing assembly of the present application.

[0013] In the drawings, the components represented by each reference numeral are listed as follows: 1, bottom plate; 2, universal wheel; 3, storage tank; 4, feed hopper; 5, stirring and cleaning mechanism; 51, motor; 52, stirring shaft; 53, long stirring rod; 54, short stirring rod; 55, U-shaped cleaning plate; 56, brush; 6, spraying mechanism; 61, spraying plate; 62, spray head; 63, ear plate; 64, electric telescopic rod; 65, liquid spraying pipe; 66, liquid pumping pump; 67, liquid pumping pipe; 68, film surface fixing assembly; 681, fixing cover; 682, bolt; 683, air suction pipe; 684, air suction pump; 685, negative pressure air suction hole. DETAILED DESCRIPTION

[0014] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0015] In the description of the present application, the terms "first", "second" are used only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0016] In the description of the present application, the term "for example" is used to indicate "as an example, illustration or explanation". Any embodiment described as "for example" in the present application is not necessarily interpreted as more preferred or more advantageous than other embodiments. The following description is given in order to enable any person skilled in the art to implement and use the present application. In the following description, details are listed for the purpose of explanation. It should be understood that those skilled in the art can recognize that the present application can be implemented without using these specific details. In other examples, well-known structures and processes will not be described in detail to avoid unnecessary details making the description of the present application obscure. Therefore, the present application is not intended to be limited to the embodiments shown, but is consistent with the broadest scope in accordance with the principles and characteristics disclosed in the present application.

[0017] Embodiment 1 Reference Figure 1 - Figure 4 A water white erasable film and its production equipment, comprising a bottom plate 1, a universal wheel 2 is arranged at the lower corner of the bottom plate 1, a storage tank 3 is arranged at one side of the upper end of the bottom plate 1, a feed hopper 4 is arranged at the upper end side of the storage tank 3, a stirring and cleaning mechanism 5 is arranged at the center position of the upper end of the storage tank 3, and a spraying mechanism 6 is arranged at the other side of the upper end of the bottom plate 1. The stirring and cleaning mechanism 5 comprises a motor 51, the motor 51 is arranged at the upper end center position of the storage tank 3, the output end of the motor 51 is provided with a stirring shaft 52, the two end surfaces of the stirring shaft 52 are provided with long stirring rods 53, and the center position surface of the stirring shaft 52 is provided with a short stirring rod 54.

[0018] Specifically, the stirring and cleaning mechanism 5 further comprises a U-shaped cleaning plate 55, the lower end of the stirring shaft 52 is provided with the U-shaped cleaning plate 55, the side edge of the U-shaped cleaning plate 55 is provided with bristles 56, By adopting the above technical scheme, the motor 51 drives the stirring shaft 52 to rotate, the long stirring rod 53 and the short stirring rod 54 form a multi-layer shear flow in the storage tank 3, the pigment agglomeration can be fully dispersed, the concentration of the erasable solution can be kept uniform, the U-shaped cleaning plate 55 rotates with the shaft, the outer bristles 56 of the U-shaped cleaning plate 55 are attached to the tank wall to sweep in a circle, the attached layer is scraped in real time, the material liquid is prevented from crystallizing or depositing on the wall surface, the integration of “stirring and cleaning” is realized, the manual tank cleaning link is saved, and the continuous operation efficiency is improved.

[0019] In use, the water-based erasable paint is first injected into the storage tank 3 through the feeding hopper 4, the motor 51 is started, the stirring shaft 52 rotates at a uniform speed of 30-60 r / min, the long stirring rod 53 is responsible for macro mixing, the short stirring rod 54 generates local turbulence to prevent sedimentation, the U-shaped cleaning plate 55 brushes the tank wall once every rotation, the bristles 56 are made of nylon 612 material, are corrosion-resistant and soft and do not damage the wall surface, and after the operation is completed, only the tank body needs to be washed with clean water to complete the daily maintenance.

[0020] Embodiment 2 The difference between this embodiment and embodiment 1 is that the spraying mechanism 6 comprises a liquid suction pump 66, the bottom plate 1 is provided with the liquid suction pump 66 at the position close to the upper end of the storage tank 3, one side of the liquid suction pump 66 is provided with a liquid suction pipe 67 and extends into the inside of the storage tank 3, the other end of the liquid suction pump 66 is provided with a liquid spraying pipe 65, the other end of the liquid spraying pipe 65 is provided with a spraying plate 61, the lower end side edge of the spraying plate 61 is provided with a plurality of groups of spray heads 62, and the lower end of the bottom plate 1 is provided with a film surface fixing assembly 68, By adopting the above technical scheme, the liquid suction pump 66 is a variable frequency diaphragm pump, the flow rate is adjustable at 0.3-1.2 L / min, the filter screen is arranged at the end of the liquid suction pipe 67 to prevent impurities from blocking, the solution is atomized by 12-16 fan-shaped spray heads 62 after entering the spraying plate 61 through the liquid spraying pipe 65, a uniform liquid curtain is formed, and the wet film thickness is accurately controlled at 10-50 μm in cooperation with the uniform movement of the PET film.

[0021] Specifically, the spraying mechanism 6 further comprises an ear plate 63, the side edge of the spraying plate 61 is provided with the ear plate 63, the lower end of the ear plate 63 is provided with an electric telescopic rod 64, By adopting the above technical scheme, two groups of electric telescopic rods 64 are synchronously lifted and lowered, driving the spray plate 61 to accurately adjust the height within ±30mm, thereby changing the distance from the spray head 62 to the film surface, adapting to different viscosity of the liquid or different thickness requirements, and avoiding splashing and sagging.

[0022] Specifically, the electric telescopic rods 64 are connected with the controller through wires, the controller controls the two groups of electric telescopic rods 64 to be opened and closed at the same time, By adopting the above technical scheme, the controller adopts a PLC+touch screen scheme, can store multiple sets of process parameters, and realize one-key switching; the telescopic rod has an adjustable running speed of 5-15mm / s, a repeat positioning accuracy of ±0.1mm, ensures that the heights of the two sides are consistent, and the uniformity of the coating transverse thickness is CV<3%.

[0023] Specifically, the film surface fixing assembly 68 includes a fixing cover 681, the lower end of the bottom plate 1 is provided with the fixing cover 681, the fixing cover 681 and the bottom plate 1 are fixedly connected through bolts 682, the lower end of the fixing cover 681 is provided with an air suction pipe 683, the other end of the air suction pipe 683 is provided with an air suction pump 684, a plurality of negative pressure air suction holes 685 are formed in the inside of the bottom plate 1 and located at the upper end of the fixing cover 681, By adopting the above technical scheme, the air suction pump 684 generates a negative pressure of-0.06MPa in the fixing cover 681, the negative pressure acts on the back of the film through the array of air suction holes 685, and the film is flatly adsorbed on the upper surface of the bottom plate 1, preventing deviation and wrinkles; when it is necessary to change the roll, the pump body is closed to instantaneously release the adsorption, realize rapid feeding and discharging, and improve the continuous production efficiency.

[0024] In use, the film is developed on the upper surface of the bottom plate 1 after the unwinding device, the air suction pump 684 is started to form negative pressure adsorption, the liquid pump 66 sends the uniformly stirred liquid in the storage tank 3 to the spray plate 61, the electric telescopic rod 64 adjusts the spray head 62 to the best coating distance according to the set height, after the spraying is completed, the film enters the drying section, the negative pressure is maintained until the film surface is dried and shaped, ensuring that the coating thickness is uniform and the edges are neat, and the yield of the finished product is improved to more than 99%.

[0025] The air suction pump 684 in the application is a prior art, and the selected model is THOMAS 1420 DC.

[0026] The electric telescopic rod 64 in the application is a prior art, and the selected model is LIM-TECLE50 series of Limtec.

[0027] The controller in the application is a prior art, and the selected model is SIMATIC S7-1200 of Siemens.

[0028] The working principle and use process of the present application: when the present application is used, the water-based erasable paint is first injected into the storage tank 3 through the feeding hopper 4, the motor 51 is started, and the stirring shaft 52 rotates at a uniform speed of 30-60 r / min, the long stirring rod 53 is responsible for macro mixing, the short stirring rod 54 generates local turbulent flow to prevent sedimentation, the U-shaped cleaning plate 55 brushes the tank wall once every revolution, the bristles 56 are made of nylon 612 material, which is corrosion-resistant and soft and does not damage the wall surface; after the operation is completed, only the tank body needs to be washed with clean water to complete the daily maintenance; the film is unwound by the unwinding device and then enters the upper surface of the bottom plate 1, the suction pump 684 is started to form negative pressure adsorption, the liquid pump 66 sends the uniformly stirred liquid in the storage tank 3 to the spraying plate 61, the electric telescopic rod 64 adjusts the spray head 62 to the best coating distance according to the set height, after the spraying is completed, the film enters the drying section, the negative pressure is maintained until the film surface is dry and shaped, ensuring that the coating thickness is uniform, the edge is neat, and the yield of finished products is improved to more than 99%.

[0029] Although preferred embodiments of the application have been described, those skilled in the art will be able to make additional changes and modifications to these embodiments once they have the basic inventive concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0030] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application also intends to include these modifications and variations.

Claims

1. A water-white pen erasable film and its production equipment, comprising a base plate (1), wherein a caster wheel (2) is provided at the lower corner of the base plate (1), a storage tank (3) is provided on one side of the upper end of the base plate (1), and a feed hopper (4) is provided on the upper side of the storage tank (3), characterized in that: A stirring and cleaning mechanism (5) is provided at the center of the upper end of the storage tank (3), and a spraying mechanism (6) is provided on the other side of the upper end of the bottom plate (1). The stirring and cleaning mechanism (5) includes a motor (51). The motor (51) is located at the center of the upper end of the storage tank (3). The output end of the motor (51) is provided with a stirring shaft (52). Long stirring rods (53) are provided on both ends of the stirring shaft (52). Short stirring rods (54) are provided on the center of the stirring shaft (52).

2. The erasable film for water-white pens and its production equipment according to claim 1, characterized in that: The stirring and cleaning mechanism (5) also includes a U-shaped cleaning plate (55), the lower end of the stirring shaft (52) is provided with a U-shaped cleaning plate (55), and the side of the U-shaped cleaning plate (55) is provided with bristles (56).

3. The erasable film for water-white pens and its production equipment according to claim 1, characterized in that: The spraying mechanism (6) includes a liquid pump (66). The liquid pump (66) is located at the upper end of the base plate (1) near the storage tank (3). A liquid pump (67) is provided on one side of the liquid pump (66) and extends into the storage tank (3). A spray pipe (65) is provided at the other end of the liquid pump (66). A spray plate (61) is provided at the other end of the spray pipe (65). Multiple sets of nozzles (62) are provided on the lower side of the spray plate (61). A film surface fixing assembly (68) is provided at the lower end of the base plate (1).

4. The erasable film for water-white pens and its production equipment according to claim 1, characterized in that: The spraying mechanism (6) also includes an ear plate (63), an ear plate (63) is provided on the side of the spray plate (61), and an electric telescopic rod (64) is provided at the lower end of the ear plate (63).

5. The erasable film for water-white pens and its production equipment according to claim 4, characterized in that: The electric telescopic pole (64) is connected to the controller via a wire, and the controller controls the two sets of electric telescopic poles (64) to open and close simultaneously.

6. The erasable film for water-white pens and its production equipment according to claim 3, characterized in that: The membrane surface fixing assembly (68) includes a fixing cover (681). The fixing cover (681) is provided at the lower end of the base plate (1). The fixing cover (681) and the base plate (1) are fixedly connected by bolts (682). The lower end of the fixing cover (681) is provided with an air suction pipe (683). The other end of the air suction pipe (683) is provided with an air suction pump (684). The interior of the base plate (1) located at the upper end of the fixing cover (681) has multiple sets of negative pressure air suction holes (685).

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