Resorption device of slit coating tool bit

Abstract

The back suction device comprises a base, sliding strips are fixedly installed on the front side and the rear side of the upper end of the base, a movable frame is jointly installed at the upper ends of the two sliding strips in a sliding mode, and installation frames are fixedly installed on the front portion and the rear portion of the upper end of the base. A transverse plate is fixedly mounted at the upper ends of the two mounting frames jointly, and a hydraulic cylinder is fixedly mounted in the middle of the upper end of the transverse plate. According to the back suction device of the slit coating tool bit, the storage box is arranged, so that the coating feeding function can be enhanced; by arranging the recycling box, residual paint in the paint spray head body is convenient to treat, when the residual paint needs to be treated, a suction hose is connected with a connecting port, the suction hose sucks the residual paint into the suction hose under the action of a suction pump, and the residual paint is sucked into the suction hose under the assistance of an auxiliary box. And the residual coating can be injected into the recycling box, so that the blockage of the pipeline caused by crystallization of the residual coating can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of coating, in particular to a re-sucking device for a slit coating knife head. Background Art

[0002] Since being reported in 2012, perovskite solar cells have attracted widespread attention due to their extremely high photoelectric conversion efficiency and low material cost. Perovskite solar cells are considered to be the next generation of new solar cells that can replace crystalline silicon solar cells. In the research field of perovskite solar cells, the three-layer mesoporous structure with carbon as the back electrode is considered to be the most marketable structure due to its low material cost and scalable process. During the preparation process of perovskite solar cells with this structure, the perovskite solution needs to be filled into the mesoporous layer. The mainstream filling technologies mainly include handheld liquid gun filling, automatic dispensing machine filling, slit coating filling, etc.

[0003] The prior art (patent number: CN114100957B) discloses a slit coating system containing a liquid re-suction channel, comprising a liquid storage device, a two-way pump, a two-way magnetic flux valve unit, a liquid outlet circuit unit and a slit coating die; the liquid storage device has a liquid outlet port and a liquid re-suction port; the liquid storage device is used to supply coating liquid and receive re-sucked coating liquid; the two-way magnetic flux valve unit has a discharge channel and a re-suction channel, one end of the discharge channel is connected to the liquid discharge port; one end of the re-suction channel is connected to the liquid re-suction port. The beneficial effects of the utility model are as follows: the slit coating system containing the liquid reabsorption channel adopts a two-way pump (such as a syringe pump) auxiliary structure, and is connected in parallel through a two-way magnetic flux valve unit. When the coating liquid is discharged, the main magnetic flux valve is opened, and the coating liquid is pumped to the slit coating die by the two-way pump; when the coating liquid is reabsorbed, the auxiliary magnetic flux valve is opened to suck the residual (or excess) coating liquid back to the liquid storage device, solving the problems of pipeline blockage due to crystallization of the coating liquid and excessive consumption of the coating liquid. The coating liquid used in the present invention is preferably a perovskite solution. Furthermore, the present invention can achieve the removal of gas from the inner cavity of the slit coating die to solve the problems of holes and uneven thickness of the film caused by bubbles, thereby improving the coating accuracy.

[0004] The existing slit coating knife head back-suction device has the following disadvantages. When the existing equipment is in a stationary state, the paint back-suction process inside the slit coating nozzle is relatively complicated. When the paint is stored for a long time, the paint is easy to form crystals and easily cause blockage in the pipeline. Therefore, we propose a new type of slit coating knife head back-suction device. Utility Model Content

[0005] The main purpose of the utility model is to provide a re-sucking device for a slit coating blade, which can effectively solve the problem that the coating is not convenient to be re-sucked.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A suction device for a slit coating tool head comprises a base, wherein sliding bars are fixedly installed on the front and rear sides of the upper end of the base, a movable frame is slidably installed on the upper ends of two sliding bars, mounting frames are fixedly installed on the front and rear sides of the upper end of the base, a cross plate is fixedly installed on the upper ends of the two mounting frames, a hydraulic cylinder is fixedly installed on the middle part of the upper end of the cross plate, a recovery box is fixedly installed on the front part of the upper end of the cross plate, and a storage box is arranged on the left end of the hydraulic cylinder.

[0008] Preferably, the output end of the hydraulic cylinder passes through the horizontal plate and is movably connected to a hydraulic rod, the lower end of the hydraulic rod is fixedly connected to a paint spray head body, and a connecting port is opened at the front right end of the paint spray head body.

[0009] Preferably, an injection pipe is fixedly connected to the middle of the upper end of the storage box, a delivery pipe is fixedly connected to the middle of the lower end of the storage box and the middle of the left end of the paint spray head body, and an air pump is fixedly connected to the front of the upper end of the storage box.

[0010] Preferably, the storage box is located at the left upper end of the paint spray head body.

[0011] Preferably, a suction pump is fixedly connected to the upper end of the recovery box, an auxiliary box is fixedly connected to the output end of the suction pump, a connecting pipe is fixedly connected to the right side of the outer cylindrical surface of the auxiliary box, and a suction hose is fixedly connected to the end of the connecting pipe away from the auxiliary box.

[0012] Preferably, one end of the suction hose away from the auxiliary box is fixedly inserted and connected in the connecting port.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. In the utility model, by setting a storage box, the feeding function of the paint can be enhanced. When in use, the paint is first injected into the storage box from the injection pipe, and the paint is transported to the paint nozzle body through the delivery pipe under the action of the air pump. Under the air pressure of the air pump, the paint can be quickly transported into the paint nozzle body, thereby enhancing the feeding function;

[0015] 2. In the utility model, by setting up a recovery box, the residual paint in the paint nozzle body is easy to handle. During use, when the residual paint needs to be handled, the suction hose is first connected to the connecting port, and the suction hose is used to suck the residual paint into the suction hose under the action of the suction pump, and with the assistance of the auxiliary box, the residual paint can be injected into the recovery box, which can avoid the residual paint from crystallizing and clogging the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of a back-suction device of a slit coating knife head of the utility model;

[0017] Figure 2 It is a schematic diagram of the overall structure of a hydraulic cylinder of a suction device of a slit coating cutter head of the utility model;

[0018] Figure 3 It is a schematic diagram of the overall structure of a storage box of a slit coating blade suction device of the utility model;

[0019] Figure 4 The utility model is a schematic diagram of the overall structure of a recovery box of a slit coating blade re-suction device.

[0020] In the figure: 1. base; 2. slide bar; 3. mobile frame; 4. mounting frame; 5. cross plate; 6. hydraulic cylinder; 7. storage box; 8. recovery box; 61. hydraulic rod; 62. paint nozzle body; 63. connecting port; 71. injection pipe; 72. delivery pipe; 73. air pump; 81. suction pump; 82. auxiliary box; 83. connecting pipe; 84. suction hose. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] like Figure 1-4 As shown, a suction device for a slit coating tool head includes a base 1, a slide bar 2 is fixedly installed on the front and rear sides of the upper end of the base 1, a movable frame 3 is slidably installed on the upper ends of the two slide bars 2, a mounting frame 4 is fixedly installed on the front and rear sides of the upper end of the base 1, a cross plate 5 is fixedly installed on the upper ends of the two mounting frames 4, a hydraulic cylinder 6 is fixedly installed on the middle part of the upper end of the cross plate 5, a recovery box 8 is fixedly installed on the front part of the upper end of the cross plate 5, and a storage box 7 is arranged on the left end of the hydraulic cylinder 6.

[0025] The output end of the hydraulic cylinder 6 passes through the cross plate 5 and is movably connected with a hydraulic rod 61, the lower end of the hydraulic rod 61 is fixedly connected with a paint nozzle body 62, and a connection port 63 is provided at the front right end of the paint nozzle body 62; an injection pipe 71 is fixedly inserted and connected to the middle of the upper end of the storage box 7, and a delivery pipe 72 is fixedly connected to the middle of the lower end of the storage box 7 and the middle of the left end of the paint nozzle body 62, and an air pump 73 is fixedly connected to the front upper end of the storage box 7; the storage box 7 is located at the left upper end of the paint nozzle body 62; by setting the storage box 7, the feeding function of the paint can be enhanced. When in use, the paint is first injected into the storage box 7 from the injection pipe 71, and under the action of the air pump 73, the paint is transported to the paint nozzle body 62 through the delivery pipe 72, and the paint can be quickly transported to the paint nozzle body 62 under the air pressure push of the air pump 73, thereby enhancing the feeding function.

[0026] A suction pump 81 is fixedly connected to the upper end of the recovery box 8, an auxiliary box 82 is fixedly connected to the output end of the suction pump 81, a connecting pipe 83 is fixedly connected to the right side of the outer cylindrical surface of the auxiliary box 82, and a suction hose 84 is fixedly connected to the end of the connecting pipe 83 away from the auxiliary box 82; the end of the suction hose 84 away from the auxiliary box 82 is fixedly inserted and connected in the connecting port 63; by setting up the recovery box 8, the residual paint in the paint nozzle body 62 is easy to handle. During use, when the residual paint needs to be handled, the suction hose 84 is first connected to the connecting port 63, and under the action of the suction pump 81, the suction hose 84 sucks the residual paint into the suction hose 84, and with the assistance of the auxiliary box 82, the residual paint can be injected into the recovery box 8, which can prevent the residual paint from clogging the pipeline due to crystallization.

[0027] It should be noted that the utility model is a suction device for a slit coating blade. By setting a storage box 7, the coating material feeding function can be enhanced. When in use, the coating is first injected into the storage box 7 from the injection pipe 71, and under the action of the air pump 73, the coating is transported to the coating nozzle body 62 through the delivery pipe 72. Under the air pressure push of the air pump 73, the coating can be quickly transported to the coating nozzle body 62, thereby enhancing the feeding function; by setting a recovery box 8, the residual coating in the coating nozzle body 62 is easy to handle. When in use, when the residual coating needs to be handled, the suction hose 84 is first connected to the connecting port 63, and under the action of the suction pump 81, the suction hose 84 sucks the residual coating into the suction hose 84, and with the assistance of the auxiliary box 82, the residual coating can be injected into the recovery box 8, which can avoid the residual coating from crystallizing and clogging the pipeline.

[0028] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A slit coating blade suction device, comprising a base (1), characterized in that: The front and rear sides of the upper end of the base (1) are fixedly mounted with a slide bar (2), the upper ends of the two slide bars (2) are slidably mounted with a movable frame (3), the front and rear parts of the upper end of the base (1) are fixedly mounted with a mounting frame (4), the upper ends of the two mounting frames (4) are fixedly mounted with a cross plate (5), the middle part of the upper end of the cross plate (5) is fixedly mounted with a hydraulic cylinder (6), the front part of the upper end of the cross plate (5) is fixedly mounted with a recovery box (8), and the left end of the hydraulic cylinder (6) is provided with a storage box (7).

2. The slit coating blade suction device according to claim 1, characterized in that: The output end of the hydraulic cylinder (6) passes through the horizontal plate (5) and is movably connected to a hydraulic rod (61); the lower end of the hydraulic rod (61) is fixedly connected to a paint spray head body (62); and a connection port (63) is provided at the front right end of the paint spray head body (62).

3. The slit coating blade suction device according to claim 2, characterized in that: The middle part of the upper end of the storage box (7) is fixedly connected with an injection pipe (71), the middle part of the lower end of the storage box (7) and the middle part of the left end of the paint spray head body (62) are fixedly connected with a delivery pipe (72), and the front part of the upper end of the storage box (7) is fixedly connected with an air pump (73).

4. The slit coating blade suction device according to claim 3, characterized in that: The storage box (7) is located at the upper left part of the paint spray head body (62).

5. The slit coating blade suction device according to claim 4, characterized in that: The upper end of the recovery box (8) is fixedly connected to a suction pump (81), the output end of the suction pump (81) is fixedly connected to an auxiliary box (82), the right side of the outer cylindrical surface of the auxiliary box (82) is fixedly connected to a connecting pipe (83), and the end of the connecting pipe (83) away from the auxiliary box (82) is fixedly connected to a suction hose (84).

6. The slit coating blade suction device according to claim 5, characterized in that: One end of the suction hose (84) away from the auxiliary box (82) is fixedly inserted and connected in the connection port (63).

Images