A spraying machine

Abstract

The present invention provides a spraying machine. The spraying machine includes a housing, a diaphragm, a housing cover, a thimble seat and a power device. A baffle is fixed inside the housing. An arc-shaped groove for fixing the thimble seat is formed on one side of the baffle. A number of thimble holes penetrating the baffle are formed on the thimble seat. Thimbles are fixed in the thimble holes. Both ends of the thimbles penetrate out of the thimble holes, and a key block is fixed at one end. A fixing column is provided on the other side of the top plate. A pressing block, a diaphragm and a pressing plate are sequentially arranged on the fixing column from inside to outside. A U-shaped concave surface is provided on the pressing block. A U-shaped convex surface is provided on the pressing plate. The diaphragm is pressed into an arch shape through the cooperation of the pressing plate and the pressing block, so that a gap is formed between the diaphragm and the pressing plate to form a coating channel. The housing cover is used to close one side of the housing, and the other side of the housing is closed by the power device. The power device is composed of a motor, a reducer and an actuator. A roller is provided on the actuator. The roller is driven by the motor to rotate and make a circular motion along the thimble. The actuator can also control the distance between the roller and the thimble.

Description

Technical Field

[0001] The present invention belongs to the field of spraying machines. Background Art

[0002] A spraying machine is a special equipment that adopts spraying technology. Its principle is to pressurize the inhaled paint, and the pressurized paint is transported to the spray gun through a hose, and the paint is released to the surface of the object to be sprayed by the spray gun.

[0003] At present, the spraying machines on the market can be mainly divided into two types: pneumatic type and plunger type. The pneumatic spraying machine inputs gas into the spraying machine to generate pressure, and the gas pushes the paint in the barrel out. The pneumatic spraying machine is suitable for spraying light paints, and has a poor spraying effect on solid-liquid mixed paints. The plunger spraying machine directly pressurizes the paint through the cooperation of the screw plunger and the plunger barrel to make it form high-pressure paint and spray out. The plunger spraying machine generates greater pressure than the pneumatic spraying machine and is suitable for spraying solid-liquid mixed paints. However, in order to achieve the high-pressure effect, the space inside the plunger structure of the plunger spraying machine is relatively narrow. When the solid-liquid mixed paint enters the plunger structure for pressurization, the solid particles in the paint squeeze and rub against each other, resulting in some large particles breaking into small particles. The solid particles sprayed onto the surface of the object to be sprayed will show different sizes, affecting the overall aesthetics after spraying. Summary of the Invention

[0004] In view of the defects existing in the existing spraying machines, the technical problem to be solved by the present invention is to provide a spraying machine that can avoid large solid particles breaking into small solid particles when spraying solid-liquid paints.

[0005] To achieve the above object, according to one aspect of the present invention, the present invention is realized by the following technical measures: A spraying machine, comprising:

[0006] A housing, a central through hole is provided in the center of the housing, a baffle is provided inside the housing, an arc-shaped groove is provided at one end of the baffle, a fixing column is provided at the other end of the baffle, a threaded hole is provided in the center of the fixing column, an arc-shaped pressing block is provided outside the fixing column, and a U-shaped concave surface is provided on the pressing block;

[0007] A diaphragm, the diaphragm is sleeved on the fixing column;

[0008] A shell cover, a pressing piece is provided on the shell cover, one side of the pressing piece faces the diaphragm, and a U-shaped convex surface is provided on this side of the pressing piece. The shell cover is fixed to the threaded hole on the fixing column to close one side of the housing, and the U-shaped convex surface of the pressing piece and the U-shaped concave surface of the pressing block cooperate to press the diaphragm into an arch shape, so that there is a gap between the diaphragm and the pressing piece to form a paint channel. An inlet and an outlet that penetrate the shell cover are also provided on the pressing piece;

[0009] An ejector seat, wherein the ejector seat is arranged in the arc groove, and the ejector seat is provided with a plurality of ejector holes penetrating the ejector seat and the baffle, each ejector hole is provided with an ejector, both ends of the ejector can pass through the ejector hole, and a key block is provided at the ejector end opposite to the diaphragm;

[0010] A power device is used to close the other side of the shell. The power device is composed of a motor, a reducer and an actuator. A roller is provided on the actuator. The motor drives the reducer, and the reducer drives the actuator to rotate and make a circular motion along the ejector. The actuator can also control the distance between the roller and the ejector.

[0011] In this spraying machine, the roller moves in a circle along the ejector pin, so that the roller will squeeze the ejector pin in an orderly manner. The ejector pin pushes the key block to form a regular fluctuation of the circular key block group, and the paint channel also fluctuates accordingly. The paint enters the paint channel from the feed port and is sprayed out from the discharge port as the gap fluctuates. In this way, it can effectively prevent large solid particles from being broken into small solid particles due to excessive extrusion.

[0012] Furthermore, the housing is formed by fixing a housing I and a housing II, the baffle is arranged in the housing I, the motor, the reducer and the actuator are arranged in the housing II, and the roller on the actuator is in the housing I. The above design is easy to install.

[0013] Furthermore, the actuator includes a shift block, an adjusting block, a rotating shaft, a rotating ring, a cam and an adjusting knob. The two ends of the shift block are fixed to the housing II by a fixing rod so that the shift block can swing left and right. A plug interface is provided at the center of the shift block, and the plug interface is buckled on the plug slot of the adjusting block for fixing. The shift block is also provided with a cam groove. One end of the rotating shaft passes through the adjusting block and is fixed to the reducer. A rotating ring is tightly sleeved on the outside of the other end of the rotating shaft. The rotating ring is driven to rotate by the rotating shaft and can move toward the adjusting block side along the rotating shaft through external force. A spring shaft is also provided between the rotating ring and the adjusting block, and a spring is sleeved on the spring shaft. A roller column is also provided on the rotating ring, and the roller is fixed on the roller. A limit ring is also provided on the rotating shaft, and the limit ring and the spring limit the displacement of the rotating ring. The adjusting knob is arranged on the outside of the housing II, and the rotating shaft of the adjusting knob is inserted into the housing II and fixed to the cam. The cam is arranged in the cam groove.

[0014] Furthermore, the rotating ring is provided with two opposite roller columns, and a roller is fixed on each roller column.

[0015] Furthermore, there are multiple spring shafts in a circular array between the rotating ring and the adjusting block.

[0016] Further, the spraying machine further includes a fixing ring which is a stepped cylinder. Its large-diameter cylinder faces the pressing block, and the pressing block and the fixing column are separate parts. The fixing ring is sleeved outside the fixing column and fixed to the fixing column by bolts, so that the fixing ring can squeeze and fix the pressing block. The diaphragm and the pressing piece are arranged on the small-diameter cylinder of the fixing ring.

[0017] Further, there are two diaphragms.

[0018] Compared with the prior art, the advantages of the present invention are as follows: when the spraying machine sprays solid-liquid coatings, it avoids the large solid particles in the coating from being broken into small solid particles due to excessive extrusion. The overall effect of the object after spraying is better, and the pressure of the sprayed coating can also be controlled by adjusting the knob. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0020] Figure 1 is an exploded view of the parts of a spraying machine according to the present invention.

[0021] Figure 2 is a schematic structural diagram of the housing I according to the present invention.

[0022] Figure 3 is a schematic diagram of the parts of the actuating mechanism according to the present invention.

[0023] Figure 4 is a schematic structural diagram when the roller presses the ejector pin according to the present invention.

[0024] Figure 5 is a schematic structural diagram of the pressing piece according to the present invention.

[0025] Explanation of the reference numerals in the drawings: 1. Outer shell; 2. Baffle; 3. Arc groove; 4. Fixing column; 5. Threaded hole; 6. Pressing block; 7. Diaphragm; 8. U-shaped concave surface; 9. Shell cover; 10. Pressing piece; 11. U-shaped convex surface; 12. Feed port; 13. Discharge port; 14. Ejector pin seat; 15. Ejector pin hole; 16. Ejector pin; 17. Motor; 18. Reducer; 19. Actuating mechanism; 20. Roller; 21. Housing I; 22. Housing II; 23. Poking block; 24. Adjusting block; 25. Rotating shaft; 26. Rotating ring; 27. Cam; 28. Adjusting knob; 29. Fixed rod; 30. Insertion port; 31. Insertion groove; 32. Cam groove; 33. Spring shaft; 34. Spring; 35. Roller column; 36. Limiting ring; 37. Fixing ring; 38. Key block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0027] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "bottom", "top", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. Embodiment

[0028] Please refer to Figure 1 and Figure 2 , a spraying machine provided in this embodiment includes a housing 1, an actuator 19, a pressing piece 10, a diaphragm 7, a housing cover 9, a thimble seat 14, a reducer 18, and a motor 17. The center of the above-mentioned housing 1 is provided with a central hole and is movably fixed by a housing I 21 and a housing II 22. A baffle 2 is fixed inside the above-mentioned housing I 21. A fixed column 4 is fixed at the center on the left side of the baffle 2. A threaded hole 5 is opened at the center of the fixed column 4. An arc-shaped groove 3 is opened on the right side of the above-mentioned baffle 2. The thimble holes 15 that penetrate the baffle 2 are evenly distributed in the arc-shaped groove 3. The above-mentioned thimble seat 14 has the same shape as the arc-shaped groove 3. The thimble seat 14 is clamped in the arc-shaped groove 3 and is horizontal with the baffle 2. The thimble holes 15 on the above-mentioned baffle 2 also penetrate the thimble seat 14 at the same time. The above-mentioned reducer 18 is connected to the main shaft of the motor 17, and the reducer 18 is used to seal the right side of the housing II 22. The above-mentioned actuator 19 is fixed at the left end of the reducer 18. In combination with Figure 3 and Figure 4Continuing the description, the above-mentioned actuator 19 includes a shifting block 23, an adjusting block 24, a rotating shaft 25, a rotating ring 26, a cam 27, and an adjusting knob 28. Both ends of the shifting block 23 are fixed to the housing II 22 through fixing rods 29, enabling the shifting block 23 to swing left and right within the housing II 22. An insertion port 30 is opened at the center of the shifting block 23, and the insertion port 30 is fastened and fixed within a socket groove 31 provided on the adjusting block 24. A cam groove 32 is also opened at the front end of the shifting block 23. The right end of the rotating shaft 25 passes through the adjusting block 24 and is fixed to the reducer 18. A rotating ring 26 is closely sleeved on the outer side of the left end of the rotating shaft 25. The rotating ring 26 is driven by the rotating shaft 25 to rotate, and the rotating ring 26 can be moved along the rotating shaft 25 toward the adjusting block 24 side by an external force. A plurality of spring shafts 33 are further provided between the rotating ring 26 and the adjusting block 24. The spring shafts 33 are distributed in a circular array. Springs 34 are sleeved on the spring shafts 33. At the same time, roller columns 35 extend outward from the front and rear ends of the rotating ring 26. Rollers 20 are fixed on both roller columns 35. A limit ring 36 is also fixed to the left end of the rotating shaft 25. The left and right displacement of the rotating ring 26 is limited by the limit ring 36 and the springs 34. The adjusting knob 28 is fixed to the outer side of the housing II 22. The rotating shaft of the adjusting knob 28 is inserted into the housing II 22 and fixed to the cam 27. The cam 27 is stuck in the cam groove 32, and the cam 27 abuts against the left side of the cam groove 32. A thimble 16 is fixed in each thimble hole 15. Both the left and right ends of the thimble 16 pass through the thimble hole 15. At the same time, the right side of the thimble 16 can contact the roller 20. The left side of the thimble 16 is located in the left cavity of the housing I 21, and a key block 38 is fixed to the left side of the thimble 16. A U-shaped concave surface 8 is opened on the left side wall surface of the pressing block 6. The pressing block 6 is close to the outer wall of the fixing column 4. The pressing block 6 is fixed by a fixing ring 37. Preferably, the fixing ring 37 is a stepped column body, composed of a large-diameter column body and a small-diameter column body. The fixing ring 37 is sleeved on the fixing column 4 and fixed by bolts, enabling the large-diameter column body to firmly hold the pressing block 6. The diaphragm 7 is composed of two pieces. The two pieces of the diaphragm 7 are sleeved on the small-diameter column body, combined with Figure 5 Continuing the description, a pressing piece 6 is fixed on the above-mentioned housing cover 9. A U-shaped convex surface 11 is machined on the opposite side of the pressing piece 6 facing the diaphragm 7. The housing cover 9 is fixed to the threaded hole 5 on the fixing column 4 to close the left side of the housing I 21. The U-shaped convex surface 11 of the pressing piece 10 and the U-shaped concave surface 8 of the pressing block 6 cooperate to press the diaphragm 7 into an arched shape, creating a gap between the diaphragm 7 and the pressing piece 10 to form a coating channel. The design of the two pieces of the diaphragm 7 enables the right diaphragm 7 to play a sealing role, preventing the coating in the left cavity formed by the baffle 2 in the housing I 21 from entering the right cavity. The pressing piece 10 is also provided with a feed port 12 and a discharge port 13 that penetrate the housing cover 9.

[0029] During use, the motor 17 starts, and the rotating shaft 25 drives the rotating ring 26 and the adjusting block 24 to rotate together. The roller 20 on the rotating shaft 25 makes a circular motion along the thimble 16. The roller 20 presses the thimble 16, and the thimble 16 pushes the key block 38 to form a group of ring key blocks 38 with regular fluctuations. At the same time, the paint channel also fluctuates accordingly. Paint enters the paint channel from the feed port 12 and is sprayed out from the discharge port 13 along with the fluctuation of the gap. This effectively solves the problem that when the spraying machine sprays solid-liquid paint, the solid particles in the paint are excessively squeezed, resulting in large solid particles being broken into small solid particles. Moreover, the above-mentioned adjusting knob 28 can also control the rotation of the shifting block 23, thereby adjusting the pressing depth of the roller 20 on the thimble 16, and further controlling the volume of the paint channel to achieve the effect of adjusting the pressure of the sprayed paint.

[0030] Through the above structural design, when the spraying machine sprays solid-liquid paint, it can avoid the solid particles in the paint being excessively squeezed and broken into small solid particles, and the overall effect of the object after spraying is better. The pressure of the sprayed paint can also be controlled by adjusting the knob.

[0031] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, various changes and modifications can be made to the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A spraying machine, It is characterized in that include: A shell, wherein a central through hole is provided at the center of the shell, a baffle is provided inside the shell, an arc-shaped groove is provided at one end of the baffle, a fixing column is provided at the other end of the baffle, a threaded hole is provided at the center of the fixing column, an arc-shaped pressing block is provided on the outer side of the fixing column, and a U-shaped concave surface is provided on the pressing block; A diaphragm, wherein the diaphragm is sleeved on the fixing column; A shell cover, wherein a pressing sheet is provided on the shell cover, one side of the pressing sheet is opposite to the diaphragm, and a U-shaped convex surface is provided on the pressing sheet on the side, the shell cover is fixed to the threaded hole on the fixing column for closing one side of the shell, and the U-shaped convex surface of the pressing sheet cooperates with the U-shaped concave surface of the pressing block to press the diaphragm into an arch shape, so that there is a gap between the diaphragm and the pressing sheet to form a coating material channel, and the pressing sheet is also provided with a feed port and a discharge port that cut through the shell cover; An ejector seat, wherein the ejector seat is arranged in the arc groove, and the ejector seat is provided with a plurality of ejector holes penetrating the ejector seat and the baffle, each ejector hole is provided with an ejector, both ends of the ejector can pass through the ejector hole, and a key block is provided at the ejector end opposite to the diaphragm; A power device, which is used to close the other side of the housing. The power device is composed of a motor, a reducer and an actuator. The actuator is provided with a roller. The motor drives the reducer, and the reducer drives the actuator to rotate and make a circular motion along the ejector. The actuator can also control the distance between the roller and the ejector. The actuator includes a shift block, an adjusting block, a rotating shaft, a rotating ring, a cam and an adjusting knob. Both ends of the shift block are fixed to the housing II by a fixing rod, so that the shift block can swing left and right. A plug interface is provided at the center of the shift block, and the plug interface is buckled on the plug slot of the adjusting block for fixing. The shift block is also provided with a cam slot. One end of the rotating shaft passes through the adjusting block and is fixed to the reducer. A rotating ring is tightly sleeved on the outside of the other end of the rotating shaft. The rotating ring is driven to rotate by the rotating shaft and can move toward the adjusting block side along the rotating shaft through external force. A spring shaft is also provided between the rotating ring and the adjusting block, and a spring is sleeved on the spring shaft. A roller column is also provided on the rotating ring, and the roller column is used to fix the roller. A limit ring is also provided on the rotating shaft, and the limit ring and the spring limit the displacement of the rotating ring. The adjusting knob is arranged on the outside of the housing II, and the rotating shaft of the adjusting knob is inserted into the housing II and fixed to the cam. The cam is arranged in the cam slot.

2. A spraying machine according to claim 1, Features: The shell is fixed by shell I and shell II, the baffle is arranged in shell I, the motor, reducer and actuator are arranged in shell II, and the roller on the actuator is in shell I.

3. A spraying machine according to claim 1 or 2, Features: The rotating ring is provided with two opposite roller columns, and a roller is fixed on each roller column.

4. A spraying machine according to claim 1 or 2, Features: There are multiple spring shafts in a circular array between the rotating ring and the adjusting block.

5. A spraying machine according to claim 1, Features: The spraying machine further includes a fixing ring, which is a stepped cylinder. Its large-diameter cylinder faces the pressing block, and the pressing block and the fixing column are separate parts. The fixing ring is sleeved on the outside of the fixing column and fixed to the fixing column by bolts, so that the fixing ring can squeeze and fix the pressing block. The diaphragm and the pressing sheet are arranged on the small-diameter cylinder of the fixing ring.

6. A spraying machine according to claim 1 or 5, characterized in that: There are two diaphragms.

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