Micro quantitative dispensing valve

Abstract

The utility model discloses a trace quantitative dispensing valve and relates to the technical field of dispensing valves. An upper oil bearing part and a lower oil discharging part which are used for conveying lubricating oil are arranged on a lead screw and a sliding rod respectively, and a lubricating assembly used for providing the lubricating oil for the upper oil bearing part is arranged on the upper surface of a dispensing shell. A vertical pipe used for conveying lubricating oil on the upper oil bearing part to the lower oil discharging part is arranged between the upper oil bearing part and the lower oil discharging part. Lubricating oil can be provided for the upper oil bearing part through the arranged lubricating assembly, the effect of filling the outer surface of the lead screw with the lubricating oil is achieved, redundant lubricating oil at the upper oil bearing part can be conveyed to the lower oil discharging part under the cooperation of the vertical pipe, lubricating oil is supplemented to the outer wall face of the sliding rod and the limiting block, and the lubricating effect is improved. Lubricating oil is supplemented to the outer surfaces of the lead screw and the sliding rod, the friction coefficient can be reduced, abrasion and heat are reduced, oil films can protect the screw rod and the sliding rod against corrosion, the service life is prolonged, and the bolt coated with the lubricating oil can play a role in looseness prevention.

Description

Technical Field

[0001] The utility model relates to the technical field of dispensing valves, in particular to a micro quantitative dispensing valve. Background Art

[0002] The dispensing valve is the most important working component on the dispenser. The dispensing valve is widely used in operations such as dot coating, line coating, filling, injection, and potting by controlling fluids such as AB glue, instant glue, SMT red glue, and COB encapsulation glue.

[0003] The Chinese utility model patent with the publication number CN220346374U discloses a micro quantitative dispensing valve. The auxiliary mechanism includes a connecting frame, a limiting groove, and a dispensing head body. The connecting frame is fixedly arranged at the bottom of the dispensing housing. The limiting groove is opened on the side wall of the connecting frame. The dispensing head body is slidably arranged on the inner wall of the limiting groove. The limiting mechanism is arranged on the auxiliary mechanism and is used to limit and fix the auxiliary mechanism. The device uses a lead screw to move the opening and closing door and uses bolts to limit and fix the dispensing head body. Although it is convenient to repair the internal dispensing components and disassemble and replace the dispensing head body when a failure occurs, the lead screw and bolts may be corroded, rusted, or even worn during long-term use. Moreover, the device lacks components for lubricating the lead screw and bolts. Over time, this will affect the normal use effect and service life of the device, resulting in the need to replace the entire component, increasing economic losses, and at the same time, it will also affect the normal progress of the dispensing operation.

[0004] Therefore, a micro quantitative dispensing valve is proposed. Content of the Utility Model

[0005] The purpose of the utility model is to provide a micro quantitative dispensing valve to solve the problems existing in the prior art.

[0006] The utility model specifically adopts the following technical solutions to achieve the above purpose:

[0007] A micro quantitative dispensing valve includes a dispensing housing, a lead screw, a slide bar, a limiting block, and an opening and closing door. An upper oil receiving part for conveying lubricating oil and a lower oil discharging part are respectively arranged on the lead screw and the slide bar. A lubricating component for providing lubricating oil to the upper oil receiving part is arranged on the upper surface of the dispensing housing. A vertical pipe for conveying the lubricating oil on the upper oil receiving part to the lower oil discharging part is arranged between the upper oil receiving part and the lower oil discharging part. The vertical pipe is a tubular shape that is vertically through.

[0008] Further, the upper oil receiving part includes a moving block. The moving block is installed on the outer wall surface of the lead screw. A receiving pipe with an upward opening is installed on the top of the moving block. A plurality of oil discharging holes one are opened at one end of the receiving pipe facing the moving block. A through hole communicating with the vertical pipe is opened inside the moving block.

[0009] Further, the lower oil drainage part includes a slider. A slider is slidably connected to the outer wall surface of the sliding rod. A discharge pipe with an opening facing the limiting block is installed at the bottom of the slider. A plurality of second oil discharge holes are formed at one end of the discharge pipe facing the slider. An output port communicating with the vertical pipe is formed inside the slider. An output pipe is connected to the opening of the discharge pipe. A lower placement cavity for placing the output end of the output pipe is formed on the upper surface of the limiting block.

[0010] Further, the outer wall surface of the output end of the output pipe is slidably connected to the inner wall surface of the lower placement cavity.

[0011] Further, the lubrication assembly includes a mounting plate. A mounting plate with an opening facing the moving block is installed on the upper surface of the dispensing housing. An oil storage tank is tenoned on the mounting plate. A feed port for injecting lubricating oil is arranged at the top of the oil storage tank. An oil outlet for outputting lubricating oil is formed at the bottom of the feed port. A sealing block for sealing the oil outlet is installed at the bottom of the oil storage tank. A reset part for moving the sealing block is arranged on the oil storage tank.

[0012] Further, the reset part includes a limiting post. A limiting post is inserted into the side wall surface of the mounting plate. A plurality of damping springs and a plurality of telescopic rods are connected between the side wall surface of the limiting post and the side wall surface of the sealing block.

[0013] The beneficial effects of the present utility model are as follows:

[0014] 1. The lubrication assembly provided in the present utility model can supply lubricating oil to the upper oil receiving part, so as to achieve the effect of filling lubricating oil on the outer surface of the lead screw. With the cooperation of the vertical pipe, the excess lubricating oil at the upper oil receiving part can be conveyed to the lower oil drainage part, and the outer wall surface of the sliding rod and the limiting block can be supplemented with lubricating oil. Supplementing lubricating oil on the outer surfaces of the lead screw and the sliding rod can reduce the friction coefficient, reduce wear and heat, and the oil film can protect it from corrosion and extend the service life. In addition, the lubricating oil inside the limiting block can flow to the bolt, and the bolt coated with lubricating oil can play a role in preventing loosening and ensure the safe operation of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the front view of the overall structure of the present utility model;

[0016] Figure 2 is the exploded view of the overall structure of the present utility model;

[0017] Figure 3 is the enlarged view of the structure of the upper oil receiving part of the present utility model;

[0018] Figure 4 is the enlarged view of the structure of the lower oil drainage part of the present utility model;

[0019] Figure 5It is an enlarged schematic diagram of the lubrication component structure of the present utility model;

[0020] Reference numerals: 1, dispensing housing; 2, lead screw; 3, slide bar; 4, limit block; 5, vertical pipe; 6, upper oil receiving part; 601, moving block; 602, receiving pipe; 603, through port; 7, lower oil discharging part; 701, slider; 702, discharge pipe; 703, output port; 704, lower cavity; 705, output pipe; 8, opening and closing door; 9, lubrication component; 901, mounting plate; 902, oil storage tank; 903, feed port; 904, oil outlet; 905, sealing block; 906, reset part; 9061, limit post; 9062, damping spring; 9063, telescopic rod. Detailed implementation manners

[0021] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0023] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In addition, the terms "first", "second", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0024] In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "inner", "outer", "upper", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship when the product of the present utility model is usually placed. It is only for the convenience of describing the present utility model 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 therefore cannot be understood as a limitation to the present utility model.

[0025] Such as Figures 1 to 5As shown in the figure, a micro quantitative dispensing valve includes a dispensing housing 1, a lead screw 2, a slide bar 3, a limit block 4, and an opening and closing door 8. An upper oil receiving part 6 for conveying lubricating oil and a lower oil discharging part 7 are respectively arranged on the lead screw 2 and the slide bar 3. A lubricating component 9 for providing lubricating oil to the upper oil receiving part 6 is arranged on the upper surface of the dispensing housing 1. A vertical pipe 5 for conveying the lubricating oil on the upper oil receiving part 6 to the lower oil discharging part 7 is arranged between the upper oil receiving part 6 and the lower oil discharging part 7. The vertical pipe 5 is a tubular structure that is vertically through.

[0026] Specifically, the lubricating component 9 can provide lubricating oil to the upper oil receiving part 6, so as to fill the outer surface of the lead screw 2 with lubricating oil. With the cooperation of the vertical pipe 5, the excess lubricating oil at the upper oil receiving part 6 can be conveyed to the lower oil discharging part 7, and the outer wall surface of the slide bar 3 and the limit block 4 can be supplemented with lubricating oil. Supplementing lubricating oil on the outer surfaces of the lead screw 2 and the slide bar 3 can reduce the friction coefficient, reduce wear and heat, and the oil film can protect them from corrosion and extend the service life. In addition, the lubricating oil inside the limit block 4 can flow to the bolt, and the bolt coated with lubricating oil can play a role in preventing loosening and ensure the safe operation of the device.

[0027] As Figure 3 shown in the figure, the upper oil receiving part 6 includes a moving block 601. The moving block 601 is installed on the outer wall surface of the lead screw 2. A receiving pipe 602 with an upward opening is installed on the top of the moving block 601. A plurality of oil discharging holes 1 are opened at one end of the receiving pipe 602 facing the moving block 601. A through hole 603 communicating with the vertical pipe 5 is opened inside the moving block 601.

[0028] Specifically, the receiving pipe 602 can receive the lubricating oil discharged from the lubricating component 9. Subsequently, during the movement of the moving block 601, the lubricating oil can be filled on the outer surface of the lead screw 2. The plurality of opened oil discharging holes can slow down the speed of the lubricating oil flowing down to the through hole 603, so that each part of the outer surface of the lead screw 2 can contact a certain amount of lubricating oil.

[0029] As Figure 4 shown in the figure, the lower oil discharging part 7 includes a slider 701. The slider 701 is slidably connected to the outer wall surface of the slide bar 3. A discharge pipe 702 with an opening facing the limit block 4 is installed at the bottom of the slider 701. A plurality of oil discharging holes 2 are opened at one end of the discharge pipe 702 facing the slider 701. An output port 703 communicating with the vertical pipe 5 is opened inside the slider 701. An output pipe 705 is connected to the opening of the discharge pipe 702. A lower cavity 704 for placing the output end of the output pipe 705 is opened on the upper surface of the limit block 4.

[0030] To ensure the stability and firmness of the output pipe 705 during movement, the outer wall surface of the output end of the output pipe 705 is slidably connected to the inner wall surface of the lower cavity 704.

[0031] Specifically, the lubricating oil discharged from the lower end of the vertical pipe 5 can be transported to the discharge pipe 702 through the set outlet 703. Subsequently, under the action of the second oil discharge hole, the flow rate of the lubricating oil flowing into the interior of the discharge pipe 702 can be slowed down, so that the lubricating oil can be evenly discharged to various parts of the inner cavity of the limiting block 4 through the output pipe 705, thereby filling the outer surface of the bolt installed inside the limiting block 4 with lubricating oil.

[0032] As Figure 5 shown, the lubricating assembly 9 includes a mounting plate 901. The mounting plate 901 with an opening facing the moving block 601 is mounted on the upper surface of the dispensing housing 1. A storage tank 902 is mortised on the mounting plate 901. A feed port 903 for injecting lubricating oil is provided at the top of the storage tank 902. An oil outlet 904 for outputting lubricating oil is opened at the bottom of the feed port 903. A sealing block 905 for sealing the oil outlet 904 is mounted at the bottom of the storage tank 902. A reset portion 906 for moving the sealing block 905 is provided on the storage tank 902. The size of the sealing block 905 is the same as that of the oil outlet 904. The length of the oil outlet 904 is the same as the length of the receiving pipe 602. The width of the oil outlet 904 is one-third of the width of the receiving pipe 602.

[0033] Specifically, the external lubricating oil can be injected into the interior of the storage tank 902 through the set feed port 903. Subsequently, under the action of the oil outlet 904, the lubricating oil can fall downward into the interior of the receiving pipe 602 that has moved below the oil outlet 904, so as to replenish the lubricating oil inside the moving block 601. With the cooperation of the reset portion 906, when the receiving pipe 602 approaches the sealing block 905, the sealing block 905 can be pushed to the side away from the oil outlet 904, thereby achieving the purpose of opening the oil outlet 904.

[0034] As Figure 5 shown, the reset portion 906 includes a limiting post 9061. The limiting post 9061 is inserted into the side wall surface of the mounting plate 901. A plurality of damping springs 9062 and a plurality of telescopic rods 9063 are connected between the side wall surface of the limiting post 9061 and the side wall surface of the sealing block 905.

[0035] Specifically, through the set damping springs 9062 and telescopic rods 9063, when the upper oil receiving portion 6 moves to the side away from the lubricating assembly 9, a corresponding spring-back effect will occur, thereby driving the sealing block 905 to automatically reset and achieving the effect of blocking the oil outlet 904.

[0036] When in use, the user can insert the limit post 9061 into the oil storage tank 902, and then inject external lubricating oil into the interior of the oil storage tank 902 through the feed port 903. When it is necessary to open the opening and closing door 8, the moving block 601 can approach the lubricating assembly 9 under the rotation of the lead screw 2. When the upper end of the connecting pipe 602 contacts the side wall surface of the sealing block 905, the sealing block 905 can be pushed to move away from the oil outlet 904, so that the oil outlet 904 can be opened. When the opening and closing door 8 is completely opened, the exposed space of the oil outlet 904 is directly above the connecting pipe 602, that is, the horizontal central axis of the oil outlet 904 corresponds to the horizontal central axis of the connecting pipe 602 up and down, and the lubricating oil inside the oil storage tank 902 can fall downward into the interior of the connecting pipe 602;

[0037] When it is necessary to close the opening and closing door 8, the lead screw 2 is driven in the reverse direction. At this time, the moving block 601 moves away from the sealing block 905. Under the action of the damping spring 9062 and the telescopic rod 9063, the sealing block 905 automatically resets to achieve the purpose of blocking the oil outlet 904. The lubricating oil inside the connecting pipe 602 can slowly slide down along the first oil drain hole to the through port 603. During the process of sliding to the through port 603, the lubricating oil can contact the outer surface of the lead screw 2 when the moving block 601 moves, so as to achieve the purpose of filling the outer surface of the lead screw 2 with lubricating oil. The lubricating oil falling at the through port 603 can be discharged into the interior of the vertical pipe 5, and then the vertical pipe 5 can convey the lubricating oil to the discharge pipe 702. Before being conveyed to the discharge pipe 702, the lubricating oil falling from the second oil drain hole can contact the outer surface of the sliding rod 3, so as to fill the outer surface of the sliding rod 3 with lubricating oil;

[0038] Finally, the excess lubricating oil can be conveyed to the inner cavity of the limit block 4 through the output pipe 705 to supplement lubricating oil to the bolts installed inside the limit block 4. When it is necessary to extract the bolts, the outer surface of the bolts can contact the lubricating oil in each part of the inner cavity of the vertical pipe 5, so as to achieve the purpose of filling the outer surface of the bolts with lubricating oil.

[0039] In summary: By providing the lubricating assembly 9, lubricating oil can be provided to the upper oil receiving part 6, so as to achieve the effect of filling the outer surface of the lead screw 2 with lubricating oil. Under the cooperation of the vertical pipe 5, the excess lubricating oil at the upper oil receiving part 6 can be conveyed to the lower oil discharging part 7, and the outer wall surface of the sliding rod 3 and the limit block 4 can be supplemented with lubricating oil. Filling lubricating oil on the outer surfaces of the lead screw 2 and the sliding rod 3 can reduce the friction coefficient, reduce wear and heat, and the oil film can protect it from corrosion and extend the service life. In addition, the lubricating oil inside the limit block 4 can flow to the bolts, and the bolts coated with lubricating oil can play a role in preventing loosening and ensure the safe operation of the device.

[0040] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments, and what is described in the above embodiments and the specification is only the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A micro quantitative dispensing valve, characterized in that, It includes a dispensing housing (1), a lead screw (2), a slide bar (3), a limit block (4), and an opening and closing door (8). An upper oil receiving part (6) for conveying lubricating oil and a lower oil discharging part (7) are respectively arranged on the lead screw (2) and the slide bar (3). A lubricating component (9) for supplying lubricating oil to the upper oil receiving part (6) is arranged on the upper surface of the dispensing housing (1). A vertical pipe (5) for conveying the lubricating oil on the upper oil receiving part (6) to the lower oil discharging part (7) is arranged between the upper oil receiving part (6) and the lower oil discharging part (7). The vertical pipe (5) is a tubular body that is vertically through.

2. The micro quantitative dispensing valve according to claim 1, characterized in that, The upper oil receiving part (6) includes a moving block (601). The moving block (601) is installed on the outer wall surface of the lead screw (2). A receiving pipe (602) with an upward opening is installed on the top of the moving block (601). A plurality of oil discharging holes I are opened at one end of the receiving pipe (602) facing the moving block (601). A through opening (603) communicating with the vertical pipe (5) is opened inside the moving block (601).

3. A micro quantitative dispensing valve according to claim 1, characterized in that, The lower oil discharging part (7) includes a sliding block (701). The sliding block (701) is slidably connected to the outer wall surface of the slide bar (3). A discharge pipe (702) with an opening facing the limit block (4) is installed at the bottom of the sliding block (701). A plurality of oil discharging holes II are opened at one end of the discharge pipe (702) facing the sliding block (701). An output port (703) communicating with the vertical pipe (5) is opened inside the sliding block (701). An output pipe (705) is connected to the opening of the discharge pipe (702). A lower placing cavity (704) for placing the output end of the output pipe (705) is opened on the upper surface of the limit block (4).

4. The micro-quantitative dispensing valve according to claim 3, characterized in that, The outer wall surface of the output end of the output pipe (705) is slidably connected to the inner wall surface of the lower placing cavity (704).

5. A micro quantitative dispensing valve according to claim 1, characterized in that, The lubricating component (9) includes a mounting plate (901). The mounting plate (901) with an opening facing the moving block (601) is installed on the upper surface of the dispensing housing (1). An oil storage tank (902) is mortised on the mounting plate (901). A feed port (903) for injecting lubricating oil is arranged at the top of the oil storage tank (902). An oil outlet (904) for outputting lubricating oil is opened at the bottom of the feed port (903). A sealing block (905) for sealing the oil outlet (904) is installed at the bottom of the oil storage tank (902). A reset part (906) for moving the sealing block (905) is arranged on the oil storage tank (902).

6. The micro quantitative dispensing valve according to claim 5, characterized in that, The reset part (906) includes a limit post (9061). The limit post (9061) is inserted into the side wall surface of the mounting plate (901). A plurality of damping springs (9062) and a plurality of telescopic rods (9063) are connected between the side wall surface of the limit post (9061) and the side wall surface of the sealing block (905).

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