Varnish filling apparatus and filling method

Abstract

The present application discloses a varnish filling device and a filling method, wherein the varnish filling device comprises: a valve body, which is internally and laterally provided with a first filling channel, and a reverse suction pump is arranged on the first filling channel; a valve nozzle, which is arranged at the lower end of the valve body and is communicated with the first filling channel, and the valve nozzle is conical or horn-shaped, the large opening end of the valve nozzle is connected with the valve body, and the small opening end is located at the side away from the valve body; a valve plug, which is arranged in the valve body and can block the valve nozzle at the lower end; and a driving mechanism, which comprises a shell, a pull rod and a driving assembly, the shell is connected with the valve body, the driving assembly is movably arranged in the shell, one end of the pull rod is arranged on the valve plug, and the other end of the pull rod is arranged on the driving assembly, and the driving assembly can drive the valve plug to move away from or close to the valve nozzle through the pull rod. In this way, the conical or horn-shaped valve nozzle can leave only a varnish film column at the valve nozzle, the reverse suction pump can suck the varnish film column back into the valve body, the weight of the filled product is accurate, and the filling site is clean and tidy.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of varnish filling device, in particular to a varnish filling device and a filling method. BACKGROUND

[0002] Varnish, also known as varnish, is a transparent light yellow paint mainly composed of resin and solvent. It has beautiful luster and is easy to shape. It is widely used in daily life and is mainly applied to the surface of objects to protect the objects. When it is dry, it will not affect the original color of the object, on the contrary, it can also play a good decorative role on the object.

[0003] The existing filling valve of the filling machine is mostly cylindrical. When filling varnish, due to the fast film-forming characteristics of varnish, wall hanging phenomenon will occur at the end. Varnish flows along the inside of the filling valve and forms multiple varnish film columns. If it is allowed to drop into the filling barrel, it will affect the filling accuracy and cause filling unqualified. If it is left unchecked, the barrel wall will collide with the varnish film column when the next filling barrel reaches the filling position, affecting the cleanliness of the outside of the barrel and possibly causing problems in the next process. SUMMARY

[0004] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application proposes a varnish filling device to ensure the accuracy of the filling product weight and improve the product qualification rate.

[0005] The present application also proposes a varnish filling method.

[0006] The varnish filling device according to the first aspect of the embodiments of the present application comprises:

[0007] A valve body is provided with a first filling channel in the inside and the side surface, and a reverse suction pump is arranged on the first filling channel;

[0008] A valve nozzle is arranged at the lower end of the valve body and communicates with the first filling channel. The valve nozzle is conical or trumpet-shaped, wherein the large opening end of the conical or trumpet-shaped valve nozzle is connected to the valve body, and the small opening end is located away from the valve body;

[0009] A valve plug is arranged in the valve body, and the lower end of the valve plug can block the valve nozzle;

[0010] A driving mechanism comprises a housing, a pull rod and a driving assembly. The housing is connected to the valve body, the driving assembly is movably arranged in the housing, one end of the pull rod is arranged on the valve plug, and the other end of the pull rod is arranged on the driving assembly. The driving assembly can drive the valve plug away from or close to the valve nozzle through the pull rod.

[0011] The varnish filling device according to the first aspect of the embodiments of the present application has at least the following beneficial effects: after the filling is completed, the conical or horn-shaped valve nozzle can leave only a column of varnish film at the valve nozzle, and the column of varnish film can be sucked back into the valve body by the back suction pump, so as to ensure the filling product weight accuracy, improve the product qualification rate, and facilitate the clean and tidy filling site.

[0012] According to some embodiments of the present application, a valve core is further included, a second filling channel is arranged in the valve plug, the valve core is movably arranged in the second filling channel, one end of the second filling channel is communicated with the first filling channel, and the other end of the second filling channel is communicated with the valve nozzle, and the driving assembly can drive the valve core to be close to or away from the valve nozzle, so as to block or communicate the second filling channel with the valve nozzle.

[0013] According to some embodiments of the present application, the other end of the second filling channel is provided with a horn-shaped closing structure, the lower end of the valve core is provided with a conical surface, the lower end of the conical surface is provided with a plug, the plug passes through the closing structure, and the closing structure and the conical surface are matched to block the second filling channel.

[0014] According to some embodiments of the present application, a valve cap is arranged on the valve plug, the valve cap is threadedly connected with the valve plug, a valve cover is arranged on the valve body, and the valve cover is connected with the valve body by bolts.

[0015] According to some embodiments of the present application, a first through hole is arranged on the valve cover, a second through hole is arranged on the valve cap, one end of the pull rod passes through the first through hole and the second through hole to be connected with the valve core, the other end of the pull rod is connected with the driving mechanism, and the upper end of the valve core has a diameter greater than that of the second through hole.

[0016] According to some embodiments of the present application, an elastic member is further arranged between the upper end of the valve cover and the valve cap, and the elastic member is used to tightly fit the valve plug with the valve nozzle.

[0017] According to some embodiments of the present application, a spring pad is arranged on the valve cover, and the spring pad is used to support the elastic member.

[0018] According to some embodiments of the present application, two air holes are arranged on the valve cap.

[0019] According to some embodiments of the present application, the shell is arranged as a support frame, the driving assembly includes a first air cylinder and a second air cylinder, the first air cylinder and the second air cylinder are arranged on the support frame and are distributed in an up-down position, the first air cylinder is connected with the other end of the pull rod, and the second air cylinder is connected with the first air cylinder.

[0020] A filling method according to the embodiment of the second aspect of the present application, for filling varnish, comprising the following steps:

[0021] A. The first cylinder and the second cylinder in the driving mechanism are both moved up to the maximum position, the valve core is moved up to abut against the valve cap, and the valve plug is moved up, so that the valve nozzle is opened;

[0022] B. The back suction pump is powered on, and the varnish starts to be filled through the first filling channel and is quickly added through the valve nozzle;

[0023] C. After reaching the first set filling amount, the second cylinder is vented, the first cylinder is moved down, the valve core is moved down together, and under the action of the elastic element, the valve plug is moved down and abuts against the valve nozzle, at this time, the valve nozzle is communicated with the second filling channel, but the flux of the varnish is reduced, and the varnish continues to be slowly added through the second filling channel;

[0024] D. After reaching the rated filling amount, the filling is stopped, at this time, under the action of the conical or horn-shaped valve nozzle, only a varnish film column is left, the varnish film column is sucked back into the valve through the continuous action of the back suction pump, the first cylinder is vented and moved down, the valve core is moved down and blocks the second filling channel through the plug at the lower end of the valve core.

[0025] The filling method according to the embodiment of the second aspect of the present application has at least the following beneficial effects: the structure of the first cylinder and the second cylinder is used to realize quick adding and slow adding in the varnish filling process, and the conical or horn-shaped valve nozzle is used to make the varnish leave only a varnish film column at the valve nozzle after slow adding, and the varnish film column can be sucked back into the valve body through the back suction pump, so that the weight accuracy of the filled product is ensured, the product qualification rate is improved, and the varnish film column can be prevented from being scratched to the outside of the barrel or falling to the ground during the next filling, which is beneficial to the cleanliness of the filling site.

[0026] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter in the description. BRIEF DESCRIPTION OF DRAWINGS

[0027] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the description of embodiments, given by reference to the following drawings, in which:

[0028] Figure 1 It is a structural schematic diagram of the varnish filling equipment according to the embodiment of the present application;

[0029] Figure 2 It is a top view of the valve body according to the embodiment of the present application;

[0030] Figure 3 It isFigure 2 A-A sectional view of the valve body shown in the figure;

[0031] Figure 4 A-A sectional view of the valve body shown in the figure; Figure 3 A-A sectional view of the valve body shown in the figure;

[0032] Figure 5 A-A sectional view of the valve body shown in the figure; Figure 2 A-A sectional view of the valve body shown in the figure.

[0033] Valve body 100, first filling channel 110;

[0034] Valve nozzle 200;

[0035] Valve plug 300, second filling channel 310, closing structure 320;

[0036] Driving mechanism 400, housing 410, pull rod 420, first cylinder 430, second cylinder 440;

[0037] Valve core 500, plug 510;

[0038] Valve cap 600, air hole 610, second through hole 620;

[0039] Valve cover 700, first through hole 710;

[0040] Elastic member 800;

[0041] Spring pad 900. DETAILED DESCRIPTION

[0042] The embodiments of the present application are described in detail below with reference to the accompanying drawings. The embodiments described below are exemplary only, and are not intended to limit the present application, and are only used to explain the present application.

[0043] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by the upper, lower, front, rear, left, right, etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0044] In the description of the present application, the meaning of one or more is one or more, the meaning of multiple is more than two, greater than, less than, more than, etc. is understood as not including the number, above, below, within, etc. is understood as including the number. If the first, second is described, it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0045] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be broadly understood, and those skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical scheme.

[0046] Reference Figures 1 to 5 According to the varnish filling device of the first aspect of the embodiments of the present application, the valve body 100 is provided with a first filling channel 110 inside and on the side, and a reverse suction pump is arranged on the first filling channel 110. It should be noted that the reverse suction pump is not shown in the drawings. The valve body 100 is fixedly connected with a valve nozzle 200. The outer edge of the valve nozzle 200 is fixed with the valve body 100 by bolts. The valve nozzle 200 is downwardly open and communicates with the first filling channel 110. The opening below the valve nozzle 200 is conical or trumpet-shaped. The large opening end of the conical or trumpet-shaped opening is connected with the valve body 100, and the small opening end is located on the side away from the valve body 100. A valve plug 300 is further arranged in the valve body 100. The lower end of the valve plug 300 can plug the valve nozzle 200. The lower end of the valve plug 300 is also conical or trumpet-shaped, and the slope thereof is consistent with that of the valve nozzle 200. A driving mechanism 400 is arranged above the valve body 100. The driving mechanism 400 includes a housing 410, a pull rod 420 and a driving assembly. The housing 410 is connected with the valve body 100. The driving assembly is movably arranged in the housing 410. One end of the pull rod 420 is arranged on the valve plug 300, and the other end is arranged on the driving assembly. The driving assembly can drive the valve plug 300 away from the valve nozzle 200 through the pull rod 420, so as to make the valve nozzle 200 and the first filling channel 110 communicate. The varnish can enter the first filling channel 110 and flow out through the valve nozzle 200 for filling. The valve plug 300 can also be driven by the pull rod 420 to approach and abut against the valve nozzle 200, so as to plug the valve nozzle 200 and prevent the varnish from flowing out, thereby stopping the filling.

[0047] The varnish filling device according to the first aspect of the embodiments of the present application has at least the following beneficial effects: After the filling is completed, the conical or trumpet-shaped valve nozzle 200 can only leave a varnish film column at the valve nozzle 200. The reverse suction pump can suck the varnish film column into the valve body 100, so as to ensure the accuracy of the filling product weight and improve the product qualification rate. At the same time, it is beneficial to keep the filling site clean and tidy.

[0048] According to some embodiments of the present application, referenceFigures 1 to 5 , the valve core 500 is movably arranged in the second filling channel 310, one end of the second filling channel 310 is communicated with the first filling channel 110, and the other end of the second filling channel 310 is communicated with the valve nozzle 200; the driving assembly can drive the valve core 500 to be close to or away from the valve nozzle 200, so that the second filling channel 310 is blocked or communicated with the valve nozzle 200; by increasing the valve core 500, two filling modes can be generated in the process of filling varnish, the valve nozzle 200 is opened by lifting the valve core 500 and the valve plug 300, at this time, the flow of the varnish filling is large and fast, which is fast filling, the valve plug 300 can be abutted against the valve nozzle 200, the valve core 500 is away from the valve nozzle 200, the second filling channel 310 in the valve plug 300 is communicated with the valve nozzle 200, and the outlet of the second filling channel 310 is smaller than the diameter of the valve nozzle 200, so that the flow of the varnish filling is reduced, the filling speed is slowed down, and it is slow filling, and the valve core 500 can be driven to gradually approach the valve nozzle 200, so that the flow is further reduced, and the valve core 500 is abutted on the second filling channel 310 to block the second filling channel 310 and stop filling.

[0049] According to some embodiments of the present application, referring to Figures 1 to 5 , the other end of the second filling channel 310 is provided with a trumpet-shaped closing structure 320, the lower end of the valve core 500 is provided with a tapered surface, the lower end of the tapered surface is provided with a plug 510, the plug 510 passes through the closing structure 320, the closing structure 320 and the tapered surface are matched to block the second filling channel 310, and it should be noted that the slopes of the tapered surface and the closing structure 320 are different, compared with the vertical plane and in the direction of an acute angle, the inclination angle of the tapered surface is smaller than the angle of the closing structure 320, so that the lower end of the tapered surface and the lower end of the closing structure 320 gradually approach and finally abut completely in the process of downward displacement of the valve core 500, the closing structure 520 is in close contact with the tapered surface after the plug 510 passes through the closing structure 320, so that the flow of the varnish can be well limited.

[0050] According to some embodiments of the present application, referring to Figures 1 to 5 , the valve plug 300 is provided with a valve cap 600, the valve cap 600 is threadedly connected with the valve plug 300, the valve body 100 is provided with a valve cover 700, and the valve cover 700 is bolted with the valve body 100, so that the valve plug 300 and the valve cap 600 and the valve body 100 and the valve cover 700 are convenient to disassemble and assemble in production and disassemble, maintain and replace in subsequent use.

[0051] According to some embodiments of the present application, referring to Figures 1 to 5The first through hole 710 is arranged on the valve cover 700, the second through hole 620 is arranged on the valve cap 600, one end of the pull rod 420 is connected with the valve core 500 by penetrating the first through hole 710 and the second through hole 620, and the other end of the pull rod 420 is connected with the driving mechanism 400. The diameter of the upper end of the valve core 500 is greater than the diameter of the second through hole 620. It should be noted that the pull rod 420 is in clearance fit with the first through hole 710 and the second through hole 620, and the diameter of the upper end of the valve core 500 is greater than the diameter of the second through hole 620. The displacement of the valve core 500 is limited in the valve plug 300, and at the same time, when the valve core 500 is driven by the pull rod 420 to be displaced upward to abut against the valve cap 600, the valve cap 600 and the valve plug 300 can be further displaced upward, so that the valve nozzle 200 can be opened, and the fast adding is realized.

[0052] According to some embodiments of the present application, referring to Figures 1 to 5 The upper end of the valve cover 700 and the valve cap 600 are further provided with an elastic member 800. The elastic member 800 is used for tightly abutting the valve plug 300 to the valve nozzle 200. During the slow adding process, the valve plug 300 is abutted to the valve nozzle 200 by the elastic member 800, so that a gap is avoided between the valve plug 300 and the valve nozzle 200, and the clear varnish is prevented from flowing out from the gap.

[0053] According to some embodiments of the present application, referring to Figures 1 to 5 The valve cover 700 is provided with a spring pad 900. The spring pad 900 is used for supporting the elastic member 800.

[0054] According to some embodiments of the present application, referring to Figures 1 to 5 The valve cap 600 is provided with two air holes 610. The air holes 610 are used for avoiding that the internal air pressure of the valve plug 300 is too large, and the valve plug 300 or the valve core 500 is damaged.

[0055] According to some embodiments of the present application, referring to ​The housing 410 is configured as a support frame. The drive assembly includes a first cylinder 430 and a second cylinder 440. Both the first cylinder 430 and the second cylinder 440 are mounted on the support frame and are vertically distributed. The first cylinder 430 is connected to the other end of the pull rod 420, and the second cylinder 440 is connected to the first cylinder 430. During the filling process, the first cylinder 430 and the second cylinder 440 act simultaneously, causing the pull rod 420 to move upward to its maximum displacement. This causes the valve core 500 to move upward until it abuts the valve cap 600, which in turn causes the valve cap 600 and the valve plug 300 to move upward, opening the valve nozzle 200 and connecting it to the first filling channel 110, thus clearing the contents of the filling channel. When the paint is added quickly, after the first cylinder 430 is depressurized, the pull rod 420 drives the valve core 500 to move downward a certain distance. Under the action of gravity and the elastic element 800, the valve cap 600 and the valve plug 300 move downward and abut against the valve nozzle 200. At this time, the valve nozzle 200 is connected to the second filling channel 310, and the flow rate of the valve nozzle 200 is reduced. The varnish flows out through the second filling channel 310 and the valve nozzle 200 for slow addition. Finally, the second cylinder 440 is depressurized, the pull rod 420 and the valve core 500 move downward, the plug enters the second filling channel 310 and blocks the second filling channel 310, the varnish can no longer flow out for filling, and filling stops.

[0056] A filling method according to an embodiment of a second aspect of the present invention, for filling varnish, includes the following steps:

[0057] A. The first cylinder 430 and the second cylinder 440 in the drive mechanism 400 both move upward to their maximum positions, causing the valve core 500 to move upward to abut against the valve cap 600, and driving the valve plug 300 to move upward, thereby opening the valve nozzle 200;

[0058] B. The back suction pump is powered on and the varnish begins to be added quickly through the first filling channel 110 and the valve nozzle 200;

[0059] C. After the first set filling volume is reached, the second cylinder 440 is depressurized, causing the first cylinder 430 to move down. The valve core 500 also moves down. Under the action of the elastic element 800, the valve plug 300 moves down and abuts against the valve nozzle 200. At this time, the valve nozzle 200 is connected to the second filling channel 310, but the flow of varnish is reduced. The varnish continues to be added slowly through the second filling channel 310.

[0060] D. After the rated filling volume is reached, filling is stopped. At this time, under the action of the conical or trumpet-shaped valve nozzle 200, only a column of varnish film remains. Through the continued action of the back suction pump, the column of varnish film is sucked back into the valve. The first cylinder 430 is depressurized and moves downward. The valve core 500 moves downward and blocks the second filling channel 310 through the plug 510 at the lower end of the valve core 500.

[0061] According to an embodiment of the second aspect of the present invention, a filling method has at least the following beneficial effects: by utilizing the dual-cylinder structure of the first cylinder 430 and the second cylinder 440, fast and slow addition of varnish can be achieved during the varnish filling process. At the same time, by utilizing the conical or horn-shaped valve nozzle 200, after the slow addition of varnish is completed, only a column of varnish film remains at the valve nozzle 200, and this column of varnish film can be drawn back into the valve body 100 by a back suction pump, which ensures the weight accuracy of the filled product, improves the product qualification rate, and also prevents the varnish film column from rubbing against the outside of the bucket or dripping onto the ground during the next filling, which is conducive to a clean and tidy filling site.

[0062] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A filling method for filling varnish, characterized in that, The application of varnish filling equipment includes: The valve body (100) has a first filling channel (110) inside and on the side, and a back suction pump is provided on the first filling channel (110); A valve nozzle (200) is disposed at the lower end of the valve body (100) and connected to the first filling channel (110). The valve nozzle (200) is conical or horn-shaped, wherein the large opening end of the conical or horn-shaped nozzle is connected to the valve body (100), and the small opening end is located on the side away from the valve body (100). A valve plug (300) is disposed in the valve body (100), and the lower end of the valve plug (300) can block the valve nozzle (200). The drive mechanism (400) includes a housing (410), a pull rod (420), and a drive assembly. The housing (410) is connected to the valve body (100). The drive assembly is movably disposed in the housing (410). One end of the pull rod (420) is disposed on the valve plug (300), and the other end is disposed on the drive assembly. The drive assembly can drive the valve plug (300) away from or near the valve nozzle (200) through the pull rod (420). The housing (410) is configured as a support frame. The drive assembly includes a first cylinder (430) and a second cylinder (440). The first cylinder (430) and the second cylinder (440) are both disposed on the support frame and are distributed vertically. The first cylinder (430) is connected to the other end of the pull rod (420), and the second cylinder (440) is connected to the first cylinder (430). The first cylinder (430) and the second cylinder (440) work together to displace the pull rod (420) upward. It also includes a valve core (500), and a second filling channel (310) is provided inside the valve plug (300). The valve core (500) is movably disposed in the second filling channel (310). One end of the second filling channel (310) is connected to the first filling channel (110), and the other end is connected to the valve nozzle (200). The driving assembly can drive the valve core (500) to move closer to or away from the valve nozzle (200) so that the second filling channel (310) blocks or connects to the valve nozzle (200). The other end of the second filling channel (310) is provided with a trumpet-shaped closing structure (320). The lower end of the valve core (500) is provided with a conical surface, and the lower end of the conical surface is provided with a plug (510). The plug (510) passes through the closing structure (320), so that the closing structure (320) and the conical surface cooperate to block the second filling channel (310). A valve cap (600) is provided on the valve plug (300), and the valve cap (600) is threadedly connected to the valve plug (300). A valve cover (700) is provided on the valve body (100), and the valve cover (700) is connected to the valve body (100) by bolts. An elastic element (800) is also provided between the upper end of the valve cover (700) and the valve cap (600), the elastic element (800) being used to make the valve plug (300) fit tightly against the valve nozzle (200). The method includes the following steps: A. The first cylinder (430) and the second cylinder (440) in the drive mechanism (400) both move upward to the maximum position, causing the valve core (500) to move upward to abut against the valve cap (600), and driving the valve plug (300) to move upward, thereby opening the valve nozzle (200); B. The back suction pump is powered on and turned on, and the varnish begins to be added quickly through the first filling channel (110) and the valve (200); C. After the first set filling volume is reached, the second cylinder (440) is depressurized, causing the first cylinder (430) to move down. The valve core (500) moves down as well. Under the action of the elastic element (800), the valve plug (300) moves down and abuts against the valve nozzle (200). At this time, the valve nozzle (200) is connected to the second filling channel (310), but the flow rate of the varnish is reduced. The varnish continues to be added slowly through the second filling channel (310). D. After the rated filling volume is reached, filling is stopped. At this time, under the action of the conical or trumpet-shaped valve nozzle (200), only a column of varnish film remains. Through the continued action of the back suction pump, the column of varnish film is sucked back into the valve. The first cylinder (430) is depressurized and moves downward. The valve core (500) moves downward and blocks the second filling channel (310) through the plug (510) at the lower end of the valve core (500).

2. The filling method according to claim 1, characterized in that, The valve cover (700) is provided with a first through hole (710), and the valve cap (600) is provided with a second through hole (620). One end of the pull rod (420) passes through the first through hole (710) and the second through hole (620) to connect to the valve core (500), and the other end is connected to the drive mechanism (400). The diameter of the upper end of the valve core (500) is larger than the diameter of the second through hole (620).

3. The filling method according to claim 1, characterized in that, A spring washer (900) is provided on the valve cover (700), and the spring washer (900) is used to support the elastic element (800).

4. The filling method according to claim 1, characterized in that, The valve cap (600) is provided with two air holes (610).

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