Coating tank of low-pressure pneumatic spraying gun

Abstract

The utility model discloses a coating tank of a low-pressure pneumatic spraying gun, and relates to the technical field of low-pressure pneumatic spraying guns, in particular to the coating tank of the low-pressure pneumatic spraying gun, which comprises a spraying gun, a hopper is connected above the spraying gun, and a top sealing cover is fixedly sleeved outside the top end of the hopper. A blocking piece is movably sleeved with an inner cavity of the hopper, a contraction spring is fixedly connected to the top sealing cover, a contraction rod is fixedly installed at the top end of the contraction spring, and a sealing piece is movably sleeved with the inner side of the top of the blocking piece. According to the coating tank of the low-pressure pneumatic spraying gun, the top end of the hopper is sleeved with the top sealing cover, the top sealing cover is connected with the shrinkage spring, the shrinkage rod is installed at the top end of the shrinkage spring, the shrinkage rod can be continuously shrunk through the shrinkage spring, and then a sealing piece in an inner cavity of the hopper is continuously shrunk; and it can be guaranteed that paint stably blocks the discharging opening, and unstable discharging of the spraying gun is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of low-pressure pneumatic spray guns, in particular to a paint tank of a low-pressure pneumatic spray gun. Background Art

[0002] A spray gun is a device that uses liquid or compressed air to release quickly as power. There are two types of spray guns: general pressure type and pressurized type. There are also pressure spray guns, Carle spray guns, and automatic recovery spray guns. Spray guns are used in the industry to directly load paint, that is, simple spray guns, which can be installed in automated equipment, such as automatic glue sprayers, automatic glue coating machines, automatic paint sprayers, coating machines and other spraying equipment.

[0003] In order to adapt to the use environment, spray guns can be divided into high-pressure spray guns and low-pressure spray guns. Most low-pressure spray guns are equipped with a hopper above the spray gun to store paint. During the spraying process, in some environments, the spray gun needs to be tilted according to the relative position of the sprayed part and the human body. During the tilted use, the paint inside the paint hopper will move under the action of gravity and roll inside the hopper. When the paint is less than half, it is easy to cause the paint to fail to cover the discharge port, and the material cannot be discharged stably at this time. In order to improve the stability of spraying, we propose a paint tank for a low-pressure pneumatic spray gun. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a paint tank for a low-pressure pneumatic spray gun, which solves the problems raised in the above-mentioned background technology.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a paint tank for a low-pressure pneumatic spray gun, comprising a spray gun, a hopper connected to the top of the spray gun, a capping cover fixedly sleeved on the outside of the top of the hopper, a sealing piece movably sleeved on the inner cavity of the hopper, a contraction spring fixedly connected to the top of the capping cover, a contraction rod fixedly installed on the top of the contraction spring, and a sealing piece movably sleeved on the top inner side of the sealing piece.

[0006] Optionally, the external movable sleeve of the hopper is provided with a balancing ring, the internal fixed sleeve of the balancing ring is provided with a balancing block, the top surface of the balancing ring is fixedly installed with a driven gear ring, the outer side of the hopper is fixedly installed with a driving motor, and the bottom end of the output shaft of the driving motor is fixedly connected with a driving gear.

[0007] Optionally, the outer side of the blocking piece fits the inner wall of the hopper, the bottom end of the retractable rod extends downward to the inner cavity of the hopper, and the bottom end of the retractable rod is fixedly connected to the top surface of the blocking piece.

[0008] Optionally, a cylindrical groove adapted to fit the top of the sealing piece is opened inside the capping cover, and the sealing piece is made of silicone material.

[0009] Optionally, the inner sides of the balancing ring and the balancing block are in contact with the outer side of the hopper, and the horizontal cross-section of the balancing block is semi-circular.

[0010] Optionally, the driving gear and the driven gear ring are located on the same inclined plane, and the outer side of the driving gear and the outer side of the driven gear ring are meshed with each other.

[0011] The utility model provides a paint tank for a low-pressure pneumatic spray gun, which has the following beneficial effects:

[0012] 1. The paint tank of the low-pressure pneumatic spray gun is provided with a capping cover mounted on the outside of the top of the hopper, a contraction spring is connected on the top of the capping cover, a contraction rod is installed on the top of the contraction spring, and the contraction rod can be continuously contracted by the contraction spring, thereby continuously contracting the sealing sheet of the inner cavity of the hopper. The setting of the sealing sheet can ensure that the paint stably blocks the discharge port, thereby avoiding unstable discharge of the spray gun.

[0013] 2. The paint tank of the low-pressure pneumatic spray gun is provided with a balance ring movably mounted on the outside of the hopper, so that a balance block is fixedly supported inside the balance ring, and a driven gear ring is fixedly mounted on the balance ring, so that a driving motor is installed on the outside of the hopper, and a driving gear is fixedly connected to the bottom end of the output shaft of the driving motor, so that the outside of the driving gear and the outside of the driven gear ring are meshed with each other, and the position of the balance block can be controlled during use, thereby stabilizing the center of gravity of the hopper and improving the stability of the spray gun. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the structure of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the hopper of the utility model;

[0017] Figure 4 It is a structural schematic diagram of the balance ring of the utility model.

[0018] In the figure: 1. spray gun; 2. hopper; 3. capping cover; 4. sealing plate; 5. retraction spring; 6. retraction rod; 7. sealing plate; 8. balance ring; 9. balance block; 10. driven gear ring; 11. driving motor; 12. driving gear. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] See also Figures 1 to 4 The utility model provides a technical solution: a paint tank for a low-pressure pneumatic spray gun, comprising a spray gun 1, a hopper 2 is connected to the top of the spray gun 1, the outer side of the blocking piece 4 is in contact with the inner wall of the hopper 2, the bottom end of the retracting rod 6 extends downward to the inner cavity of the hopper 2, the bottom end of the retracting rod 6 is fixedly connected to the top surface of the blocking piece 4, the setting of the blocking piece 4 can play a role of limiting, which can limit the range of movement of the paint so that the paint can only be discharged downward, and the setting of the blocking piece 4 can effectively prevent the paint in the inner cavity of the hopper 2 from flowing after the spray gun 1 is tilted, resulting in the inability to completely cover the discharge port, affecting the smoothness of the discharge, the external fixed sleeve on the top of the hopper 2 is provided with a capping cover 3, the inner cavity of the hopper 2 is movable sleeved with a blocking piece 4, and the capping cover 3 A cylindrical groove adapted to the top of the sealing piece 4 is provided inside the body, and the sealing piece 7 is made of silicone material. The contraction spring 5 will continuously drive the contraction rod 6 to move downward, so that the sealing piece 4 will be driven downward during the downward movement of the contraction rod 6. The cooperation of the contraction spring 5 and the contraction rod 6 can ensure the stability of the sealing piece 4 during the downward movement. The top of the capping cover 3 is fixedly connected with a contraction spring 5, and the top of the contraction spring 5 is fixedly installed with a contraction rod 6. A sealing piece 7 is movably sleeved on the inner side of the top of the sealing piece 4, so that the bottom surface of the sealing piece 4 is always in contact with the top surface of the paint. After the spray gun is tilted, the sealing piece 7 will ensure that the paint always blocks the discharge port to ensure the smoothness of the paint discharge. The setting of the sealing piece 7 can ensure the stability of the sealing liquid of the sealing piece 4.

[0021] The outer movable sleeve of the hopper 2 is provided with a balancing ring 8, the inner sides of the balancing ring 8 and the balancing block 9 are fitted with the outer side of the hopper 2, the horizontal cross section of the balancing block 9 is semi-circular, and the balancing block 9 is arranged in a semi-circular shape, which can play an auxiliary stabilizing role and balance the center of gravity. The inner fixed sleeve of the balancing ring 8 is provided with a balancing block 9, and the top surface of the balancing ring 8 is fixedly installed with a driven gear ring 10, the driving gear 12 and the driven gear ring 10 are located on the same inclined plane, and the outer sides of the driving gear 12 and the driven gear ring 10 are meshed with each other, and the output of the driving motor 11 is used to drive the driven gear 12 and the driven gear ring 10. The shaft controls the rotation of the driving gear 12, and then uses the driving gear 12 to drive the driven gear ring 10 to rotate. During the rotation of the driven gear ring 10, the balance ring 8 will be driven to move outside the hopper 2, and then drive the inner balance block 9 to move, so that the balance block 9 can stabilize the center of gravity. The cooperation between the balance ring 8 and the balance block 9 can stabilize the center of gravity and assist in spraying. A driving motor 11 is fixedly installed on the outside of the hopper 2, and the bottom end of the output shaft of the driving motor 11 is fixedly connected to the driving gear 12.

[0022] In summary, when the paint tank of the low-pressure pneumatic spray gun is used, the paint is first filled into the inner cavity of the hopper 2 below the blocking piece 4, and the retraction rod 6 is pulled at the same time to put the retraction spring 5 in a stretched state. After the filling is completed, the sealing piece 7 is used to seal the top of the blocking piece 4, and the retraction rod 6 is released to install the hopper 2 above the spray gun 1. Subsequently, during use, the retraction spring 5 will continue to drive the retraction rod 6 to move downward, so that the blocking piece 4 is driven downward during the downward movement of the retraction rod 6, so that the bottom surface of the blocking piece 4 always fits the top surface of the paint. After the spray gun is tilted, the sealing sheet 7 will ensure that the paint always blocks the discharge port to ensure the smoothness of the paint discharge. At the same time, during the spraying process, after the spray gun is tilted, in order to ensure the stability of the spray gun during use, the output shaft of the drive motor 11 can be used to control the rotation of the active gear 12, and then the active gear 12 can be used to drive the driven gear ring 10 to rotate. During the rotation of the driven gear ring 10, the balance ring 8 will be driven to move outside the hopper 2, and then the inner balance block 9 will be driven to move, so that the balance block 9 can stabilize the center of gravity.

[0023] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it 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 indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not expressly listed, or also includes elements inherent to such process, method, article, or apparatus.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A paint tank for a low-pressure pneumatic spray gun, comprising a spray gun (1), wherein a hopper (2) is connected to the top of the spray gun (1), characterized in that: A capping cover (3) is fixedly mounted on the outside of the top of the hopper (2), a sealing plate (4) is movably mounted on the inner cavity of the hopper (2), a contraction spring (5) is fixedly connected to the top of the capping cover (3), a contraction rod (6) is fixedly mounted on the top of the contraction spring (5), and a sealing plate (7) is movably mounted on the inner side of the top of the sealing plate (4).

2. The paint tank of a low-pressure pneumatic spray gun according to claim 1, characterized in that: The hopper (2) is movably sleeved with a balancing ring (8) on the outside, a balancing block (9) is fixedly sleeved inside the balancing ring (8), a driven gear ring (10) is fixedly mounted on the top surface of the balancing ring (8), a driving motor (11) is fixedly mounted on the outside of the hopper (2), and a driving gear (12) is fixedly connected to the bottom end of the output shaft of the driving motor (11).

3. The paint tank of a low-pressure pneumatic spray gun according to claim 1, characterized in that: The outer side of the blocking piece (4) is in contact with the inner wall of the hopper (2), the bottom end of the retractable rod (6) extends downward into the inner cavity of the hopper (2), and the bottom end of the retractable rod (6) is fixedly connected to the top surface of the blocking piece (4).

4. The paint tank of a low-pressure pneumatic spray gun according to claim 1, characterized in that: The interior of the capping cover (3) is provided with a cylindrical groove adapted to fit the top of the sealing piece (4), and the sealing piece (7) is made of a silica gel material.

5. The paint tank of a low-pressure pneumatic spray gun according to claim 2, characterized in that: The inner sides of the balancing ring (8) and the balancing block (9) are fitted with the outer side of the hopper (2), and the horizontal cross section of the balancing block (9) is semi-circular.

6. The paint tank of a low-pressure pneumatic spray gun according to claim 2, characterized in that: The driving gear (12) and the driven gear ring (10) are located on the same inclined plane, and the outer side of the driving gear (12) and the outer side of the driven gear ring (10) are meshed with each other.

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