Screen printing workpiece cleaning tank

Abstract

The utility model provides a silk-screen printing workpiece cleaning tank which comprises a tank body, the tank body extends in the front-back direction and is provided with a conveying belt penetrating through the tank body in the front-back direction, the tank body is divided into a plurality of branch tank bodies in the front-back direction, and the branch tank bodies comprise a first spraying tank, a second spraying tank, an ultrasonic cleaning tank, a surge cleaning tank and an air cleaning tank. The first spray washing tank and the second spray washing tank are internally provided with water spray row pipes for washing workpieces; an ultrasonic generator is arranged in the ultrasonic cleaning tank; a winding drum for stirring water flow is arranged in the surge cleaning tank; and an air injection plate for blow-drying the workpiece is arranged above the air cleaning tank. According to the cleaning tank for the silk-screen printing workpiece, the flat-plate-shaped to-be-printed workpiece is pre-cleaned through continuous clean water spray cleaning, ultrasonic cleaning, surge soaking cleaning and air cleaning, and the cleaning tank has the advantages of being high in cleaning efficiency and good in effect.

Description

Technical Field

[0001] The utility model relates to the technical field of printing, and particularly relates to a cleaning tank for screen printing workpieces. Background Art

[0002] Screen printing refers to making a screen printing plate with patterns and texts using a screen. It uses the basic principle that the mesh holes in the graphic part of the screen printing plate can pass through ink, while the mesh holes in the non-graphic part cannot pass through ink for printing. Screen printing is widely used and can print patterns on various materials such as plastics, glass, and fabrics. To ensure printing quality, hard materials such as plastics and glass need to be thoroughly cleaned before printing. However, these semi-finished workpieces to be printed may be contaminated with substances such as dust, cutting debris, and protective oil in the previous processes. Ordinary cleaning cannot completely clean them, and after cleaning, they still need to be transported to other workstations and loaded onto drying racks for drying, which seriously affects the printing efficiency. Content of the Utility Model

[0003] In view of the defects in the background art, the utility model provides a cleaning tank for screen printing workpieces, which pre-cleans flat workpieces to be printed through continuous processes of water spray cleaning, ultrasonic cleaning, surge immersion cleaning, and air cleaning, and has the characteristics of high cleaning efficiency and good effect.

[0004] The utility model provides a cleaning tank for screen printing workpieces, which includes a tank body. The tank body extends along the front-back direction and is provided with a conveyor belt that runs through the tank body from front to back. The tank body is divided into multiple sub-tank bodies along the front-back direction, including a first spray cleaning tank, a second spray cleaning tank, an ultrasonic cleaning tank, a surge cleaning tank, and an air cleaning tank;

[0005] The first spray cleaning tank and the second spray cleaning tank are provided with water spray pipes for flushing workpieces;

[0006] The ultrasonic cleaning tank is provided with an ultrasonic generator;

[0007] The surge cleaning tank is provided with a reel for agitating water flow;

[0008] Above the air cleaning tank, there is an air jet plate for drying workpieces.

[0009] Preferably, the water spray pipe in the first spray cleaning tank is the first water spray pipe. The first water spray pipe is located above the conveyor belt and extends along the left-right direction of the tank body, spraying water forward and downward and backward and downward.

[0010] Preferably, the water spray pipe in the second spray cleaning tank is the second water spray pipe. The second water spray pipe is located above the conveyor belt and extends along the front-back direction of the tank body, spraying water leftward and downward and rightward and downward.

[0011] Preferably, there are two reels, which are installed on the same horizontal plane and rotate in opposite directions.

[0012] Preferably, a plurality of parallel air jets are provided at the bottom of the air jet plate. The air jets extend in the left-right direction of the groove body and jet high-pressure gas forward and downward onto the conveyor belt.

[0013] Preferably, the conveyor belt is composed of two upper and lower rows of conveyor rollers, and a plurality of pressure wheels for clamping workpieces are provided at intervals along the axial direction of each conveyor roller.

[0014] Preferably, the first spray washing tank, the second spray washing tank, the ultrasonic cleaning tank and the surge cleaning tank are respectively provided with independent water circulation systems.

[0015] Preferably, a sluice for the workpiece to pass through is provided between the sub-tank bodies, and a pair of water blocking rollers that open up and down are installed at the sluice;

[0016] The upper water blocking roller is elastically installed at the top of the sluice, and the lower water blocking roller is elastically installed at the bottom of the sluice.

[0017] The beneficial effects of the present utility model include: The screen printing workpiece cleaning tank includes a conveyor belt that runs through the tank body from front to back and is divided into a first spray washing tank, a second spray washing tank, an ultrasonic cleaning tank, a surge cleaning tank and an air cleaning tank. In the first spray washing tank and the second spray washing tank, the workpiece can be rinsed with clean water from different directions to remove the floating dust and cutting debris on the workpiece surface and prevent the floating dust and debris from remaining in the grooves on the workpiece surface. In the ultrasonic cleaning tank, the residual protective oil film on the workpiece surface can be removed. In the surge cleaning tank, various foreign matters still remaining on the workpiece surface can be softened by soaking and taken away by the water flow. In the air cleaning tank, the liquid that may dissolve foreign matters on the workpiece surface can be blown away by high-pressure air, and the workpiece can be quickly dried to prepare for the next screen printing. Description of the Drawings

[0018] The following will describe the present utility model in detail in conjunction with the embodiments and the drawings, where:

[0019] Figure 1 is a perspective view of the screen printing workpiece cleaning tank of the present utility model.

[0020] Figure 2 is a sectional view of the screen printing workpiece cleaning tank of the present utility model.

[0021] Figure 3 is a structural diagram of the conveyor roller of the present utility model.

[0022] Figure 4 is a structural diagram of the air cleaning tank of the present utility model.

[0023] Figure 5 is a structural diagram of the water blocking roller of the present utility model.

[0024] Reference numerals:

[0025] 1 - conveyor belt, 11 - conveyor roller, 12 - pressure wheel, 13 - workpiece inlet, 14 - workpiece outlet, 2 - first spray washing tank, 21 - first water spray pipe, 22 - first filtration tank, 23 - first water pump, 3 - second spray washing tank, 31 - second water spray pipe, 32 - second filtration tank, 33 - second water pump, 4 - ultrasonic cleaning tank, 41 - ultrasonic generator, 42 - third water supply pipe, 43 - third filtration tank, 44 - third water pump, 5 - surge cleaning tank, 51 - reel, 52 - fourth water supply pipe, 53 - fourth filtration tank, 54 - fourth water pump, 6 - air cleaning tank, 61 - jet plate, 62 - jet groove, 63 - fifth filtration tank, 7 - gate, 71 - water retaining roller. Detailed implementation manners

[0026] In order to make the technical problems, technical solutions and beneficial effects to be solved by 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. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0027] Therefore, a feature pointed out in this specification will be used to illustrate one of the features of one embodiment of the present utility model, rather than implying that each embodiment of the present utility model must have the described feature. In addition, it should be noted that this specification describes many features. Although some features may be combined to show possible system designs, these features can also be used in other combinations not explicitly described. Therefore, unless otherwise stated, the described combination is not intended to be limiting.

[0028] The principle of the present utility model will be described in detail below with reference to the accompanying drawings and embodiments.

[0029] The present utility model provides a kind of as Figures 1-5The screen printing workpiece cleaning tank shown in the figure includes a tank body. The tank body extends in the front-back direction and is provided with a conveyor belt 1 that runs through the tank body from front to back. The tank body is divided into multiple sub-tank bodies in the front-back direction, including a first spray washing tank 2, a second spray washing tank 3, an ultrasonic cleaning tank 4, a surge cleaning tank 5, and an air cleaning tank 6. In the first spray washing tank 2 and the second spray washing tank 3, there are water spray pipes for flushing the workpieces. In the ultrasonic cleaning tank 4, there is an ultrasonic generator 41. In the surge cleaning tank 5, there is a reel 51 for agitating the water flow. Above the air cleaning tank 6, there is an air jet plate 61 for drying the workpieces. The water spray pipe in the first spray washing tank 2 is the first water spray pipe 21. The first water spray pipe 21 is located above the conveyor belt 1 and extends in the left-right direction of the tank body, spraying water forward and downward and backward and downward. The water spray pipe in the second spray washing tank 3 is the second water spray pipe 31. The second water spray pipe 31 is located above the conveyor belt 1 and extends in the front-back direction of the tank body, spraying water leftward and downward and rightward and downward.

[0030] In the first spray washing tank 2 and the second spray washing tank 3, the workpieces can be rinsed with clean water from different directions to remove the floating dust and cutting debris on the surfaces of the workpieces and prevent the floating dust and debris from remaining in the grooves on the surfaces of the workpieces. In the ultrasonic cleaning tank 4, the residual protective oil film on the surfaces of the workpieces can be removed. In the surge cleaning tank 5, various foreign objects still remaining on the surfaces of the workpieces can be softened by soaking, and the foreign objects can be taken away by the water flow. In the air cleaning tank 6, the liquid on the surfaces of the workpieces that may dissolve foreign objects can be blown away by high-pressure air, and the workpieces can be quickly dried, preparing for the next step of screen printing.

[0031] In this embodiment, there are two reels 51, which are installed on the same horizontal plane and rotate in opposite directions. Figure 2 The water flow direction is given. The workpieces are immersed below the water surface, and the water flow will wash the top and bottom surfaces of the workpieces, fully soaking and cleaning the workpieces.

[0032] In this embodiment, several parallel air jet grooves 62 are provided at the bottom of the air jet plate 61. The air jet grooves 62 extend in the left-right direction of the tank body and spray high-pressure gas obliquely downward against the conveyor belt 1, that is, the high-pressure gas flushes the workpieces obliquely downward. This can not only blow away the liquid on the surfaces of the workpieces but also quickly dry the workpieces.

[0033] In this embodiment, the conveyor belt 1 is composed of two rows of conveyor rollers 11 from top to bottom. Along the axial direction of each conveyor roller 11, several pressure wheels 12 for clamping the workpieces are provided at intervals. The contact surface of the pressure wheels 12 with the workpieces is small, and the resistance to the water flow is also small, which will not affect the cleaning effect.

[0034] In this embodiment, the first spray washing tank 2, the second spray washing tank 3, the ultrasonic cleaning tank 4, and the surge cleaning tank 5 are respectively provided with independent water circulation systems.

[0035] Among them, the water circulation system in the first spray washing tank 2 includes a first water spray pipe 21, a first filter tank 22 and a first water pump 23. After the water is sprayed out from the first water spray pipe 21, it enters the first spray washing tank 2. The first filter tank 22 and the first water pump 23 are located on one side of the first spray washing tank 2. The bottom plate of the first spray washing tank 2 slopes towards the first filter tank 22 and is provided with drain holes communicating with the first filter tank 22. The water in the first spray washing tank 2 enters the first filter tank 22 with filter bags placed therein through the drain holes, is then connected to the first water pump 23 through a pipeline, and is pumped by the first water pump 23 to the first water spray pipe 21 for recycling.

[0036] The water circulation system in the second spray washing tank 3 includes a second water spray pipe 31, a second filter tank 32 and a second water pump 33. After the water is sprayed out from the second water spray pipe 31, it enters the second spray washing tank 3. The second filter tank 32 and the second water pump 33 are located on one side of the second spray washing tank 3. The bottom plate of the second spray washing tank 3 slopes towards the second filter tank 32 and is provided with drain holes communicating with the second filter tank 32. The water in the second spray washing tank 3 enters the second filter tank 32 with filter bags placed therein through the drain holes, is then connected to the second water pump 33 through a pipeline, and is pumped by the second water pump 33 to the second water spray pipe 31 for recycling.

[0037] The water circulation system in the ultrasonic cleaning tank 4 includes a third water supply pipe 42, a third filter tank 43 and a third water pump 44. After the water is sprayed out from the third water supply pipe 42, it enters the ultrasonic cleaning tank 4. The third filter tank 43 and the third water pump 44 are located on one side of the ultrasonic cleaning tank 4. The bottom plate of the ultrasonic cleaning tank 4 slopes towards the third filter tank 43 and is provided with drain holes communicating with the third filter tank 43. The water in the ultrasonic cleaning tank 4 enters the third filter tank 43 with filter bags placed therein through the drain holes, is then connected to the third water pump 44 through a pipeline, and is pumped by the third water pump 44 to the third water supply pipe 42 for recycling.

[0038] The water circulation system in the surge cleaning tank 5 includes a fourth water supply pipe 52, a fourth filter tank 53 and a fourth water pump 54. After the water is sprayed out from the fourth water supply pipe 52, it enters the surge cleaning tank 5. The fourth filter tank 53 and the fourth water pump 54 are located on one side of the surge cleaning tank 5. The bottom plate of the surge cleaning tank 5 slopes towards the fourth filter tank 53 and is provided with drain holes communicating with the fourth filter tank 53. The water in the surge cleaning tank 5 enters the fourth filter tank 53 with filter bags placed therein through the drain holes, is then connected to the fourth water pump 54 through a pipeline, and is pumped by the fourth water pump 54 to the fourth water supply pipe 52 for recycling.

[0039] The air cleaning tank 6 only needs to drain water. A fifth filter tank 63 is provided on one side of the air cleaning tank 6, and filter bags are also placed in the fifth filter tank 63. However, the filtered water is no longer used but is discharged after environmental protection treatment.

[0040] In this embodiment, the liquid levels in the first spray washing tank 2 and the second spray washing tank 3 can be the same, as long as it is ensured that the liquid surface is below the workpiece; for the ultrasonic cleaning tank 4 and the surge cleaning tank 5, it is necessary to ensure that the workpiece is below the liquid surface, and the conveyor belt 1 extends horizontally. Therefore, the liquid levels in the ultrasonic cleaning tank 4 and the surge cleaning tank 5 are higher than those in the first spray washing tank 2 and the second spray washing tank 3; the air cleaning tank 6 only needs to drain the blown-off water. Therefore, it is necessary to reduce the mutual circulation of water in each sub-tank through the conveyor belt 1. To solve the above problems, a gate 7 for the workpiece to pass through is provided between each sub-tank, and a pair of water-blocking rollers 71 that open and close up and down are installed on the gate 7. The upper water-blocking roller 71 is elastically installed at the top of the gate 7, and the lower water-blocking roller 71 is elastically installed at the bottom of the gate 7. When the workpiece passes through the gate 7 along with the conveyor belt 1, the front end of the workpiece will push the two water-blocking rollers 71 to roll and open up and down. After the workpiece passes through the gate 7, the two water-blocking rollers 71 reset and close the gate 7 again.

[0041] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A screen printing workpiece cleaning tank, comprising a tank body, the tank body extends along the front-back direction, and is provided with a conveyor belt that penetrates through the tank body from front to back, characterized in that, The tank body is divided into a plurality of sub-tank bodies along the front-back direction, including a first spray washing tank, a second spray washing tank, an ultrasonic cleaning tank, a surge cleaning tank and an air cleaning tank; The first spray washing tank and the second spray washing tank are provided with water spray pipes for flushing workpieces; The ultrasonic cleaning tank is provided with an ultrasonic generator; The surge cleaning tank is provided with a reel for agitating water flow; Above the air cleaning tank, there is an air jet plate for drying workpieces.

2. The screen printing workpiece cleaning tank according to claim 1, wherein, The water spray pipe located in the first spray washing tank is the first water spray pipe, which is located above the conveyor belt and extends along the left-right direction of the tank body, spraying water forward and downward and backward and downward.

3. The screen printing workpiece cleaning tank according to claim 2, wherein, The water spray pipe located in the second spray washing tank is the second water spray pipe, which is located above the conveyor belt and extends along the front-back direction of the tank body, spraying water leftward and downward and rightward and downward.

4. The screen printing workpiece cleaning tank according to claim 3, characterized in that, There are two reels, which are installed on the same horizontal plane and rotate in opposite directions.

5. The screen printing workpiece cleaning tank according to claim 4, characterized in that, The bottom of the air jet plate is provided with a plurality of parallel air jet grooves, which extend along the left-right direction of the tank body and spray high-pressure gas forward and downward towards the conveyor belt.

6. The screen printing workpiece cleaning tank according to claim 1, wherein, The conveyor belt is composed of two rows of upper and lower conveyor rollers, and a plurality of pressure wheels for clamping workpieces are arranged at intervals along the axial direction on each conveyor roller.

7. The screen printing workpiece cleaning tank according to claim 1, characterized in that, The first spray washing tank, the second spray washing tank, the ultrasonic cleaning tank and the surge cleaning tank are respectively provided with independent water circulation systems.

8. The screen printing workpiece cleaning tank according to claim 7, characterized in that, Gate openings for the workpieces to pass through are provided between the sub-tank bodies, and a pair of water blocking rollers that open and close up and down are installed at the gate openings; The upper water blocking roller is elastically installed at the top of the gate opening, and the lower water blocking roller is elastically installed at the bottom of the gate opening.

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