High-sensitivity dispensing valve

By driving the piston rod to move vertically through a servo drive mechanism, linear motion control of the sealing head is achieved, which solves the problem of insufficient accuracy and sensitivity of the switching valve in the existing technology and improves the consistency of the dispensing speed and dispensing volume of the dispensing valve.

CN223811192UActive Publication Date: 2026-01-20SUZHOU ZHUOXU NEW ENERGY TECHNOLOGY CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202520069494.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-01-13
Publication Date
2026-01-20
Estimated Expiration
2035-01-13

AI Technical Summary

Technical Problem

Existing switching valves, controlled by high-pressure gas, have poor precision and sensitivity, failing to meet the requirements for frequent switching of adhesives.

Method used

A servo drive mechanism is used to drive the piston rod to move vertically, and the reciprocating motion of the sealing head is realized through the glue guide channel, which converts the rotational motion into linear motion to control the glue application and improves the speed and sensitivity of glue application.

Benefits of technology

It improves the accuracy of dispensing volume and the consistency of dispensing volume across multiple applications, and enhances the speed and sensitivity of dispensing and sizing.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN223811192U_ABST
    Figure CN223811192U_ABST
Patent Text Reader

Abstract

The utility model discloses a high-sensitivity dispensing valve which comprises a glue inlet block, a piston rod extending vertically, a glue sealing head arranged at the lower end of the piston rod, a glue inlet runner arranged on the glue inlet block, a glue inlet arranged on the side wall of the glue inlet block, and a sealing block arranged above the glue inlet block, an output shaft of a servo driving mechanism installed above the sealing block through a support is in transmission connection with the upper end of the piston rod, a glue guiding block is installed at the lower end of the glue feeding block, and a lower glue guiding hole with the upper end communicated with the lower end of the upper glue guiding hole is formed in the glue guiding block extending vertically. The lower end of the lower glue guide hole extends to the lower end face of the glue guide block to form a glue outlet, and the blocking part of the glue sealing head is located below the glue outlet. Rotary motion is converted into linear motion through the servo driving mechanism to drive the glue sealing head to move in a reciprocating mode to achieve glue opening and closing operation, the glue opening and closing speed and sensitivity are improved, and therefore the precision of the glue outlet amount and the consistency of the multiple glue outlet amounts are improved.
Need to check novelty before this filing date? Find Prior Art

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of dispensing, particularly to a high-sensitivity dispensing valve. BACKGROUND

[0002] The dispensing machine is an automatic machine for controlling glue and then dropping or coating the glue on the surface or groove of a product. A special on-off valve is usually used to control the opening and closing of the glue. The on-off valve of the prior art realizes the opening and closing of the glue by the on-off of high-pressure gas. However, the precision and sensitivity of the control by the high-pressure gas are poor, which results in that the reaction sensitivity of the opening and closing of the glue cannot meet the use requirement of frequent opening and closing of the glue. SUMMARY

[0003] The utility model wants to solve the technical problem to provide a high-sensitivity dispensing valve, this high-sensitivity dispensing valve can improve the speed and sensitivity of the opening and closing of the glue, thereby improving the precision of the glue output and the consistency of the multiple glue outputs.

[0004] To solve the above technical problem, the utility model adopts the technical scheme of a high-sensitivity dispensing valve, comprising: a glue inlet block, a vertically extending piston rod and a glue sealing head mounted on the lower end of the piston rod, one end of a glue inlet flow channel provided on the glue inlet block is a glue inlet on the side wall of the glue inlet block, the other end of the horizontally extending glue inlet flow channel is in communication with the upper end of an upper glue guide hole provided in the glue inlet block and vertically extending, a sealing block is arranged above the glue inlet block, a sealing assembly is arranged between the outer surface of the piston rod penetrating through the sealing block and the inner wall of the mounting hole provided on the sealing block, the output shaft of a servo drive mechanism mounted above the sealing block through a support is in transmission connection with the upper end of the piston rod for driving the piston rod to move in the vertical direction.

[0005] The lower end of the glue inlet block is mounted with a glue guide block, a lower glue guide hole is provided on the vertically extending glue guide block and in communication with the lower end of the upper glue guide hole, the lower end of the lower glue guide hole extends to the lower end face of the glue guide block to form a glue outlet, the blocking part of the glue sealing head is located below the glue outlet, the connecting rod part of the glue sealing head extends upward into the lower glue guide hole and is connected with the piston rod, the outer side surfaces of the piston rod and the connecting rod part of the glue sealing head penetrating into the upper glue guide hole and the lower glue guide hole in sequence and the inner walls of the upper glue guide hole and the lower glue guide hole form a glue guide flow channel in communication with the glue inlet and the glue outlet, when the glue sealing head moves to the high position with the piston rod, the blocking part thereof is in sealing cooperation with the glue outlet, when the glue sealing head moves to the low position with the piston rod, a glue outlet gap is formed between the blocking part thereof and the glue outlet.

[0006] The further improved scheme in the above technical scheme is as follows:

[0007] 1. In the above scheme, a guide tube is provided inside the upper guide hole and the lower guide hole and on the outside of the connecting rod of the piston rod and the sealing head. The outer walls of the upper and lower ends of the guide tube are connected to the glue inlet block and the guide block respectively through sealing rings.

[0008] 2. In the above scheme, the adhesive channel is formed between the inner wall of the adhesive tube and the connecting rod of the piston rod and the sealing head, and the inner wall of the lower end of the adhesive tube has a radially inward flange, and the adhesive outlet is formed on the inner side of the flange.

[0009] 3. In the above scheme, the guide tube is a metal guide tube.

[0010] 4. In the above scheme, a mounting groove is formed on the lower surface of the glue inlet block and outside the upper glue guide hole. The upper end of the glue guide block is embedded in this mounting groove and is sealed with the inner wall of the mounting groove by a sealing ring.

[0011] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0012] This utility model relates to a high-sensitivity dispensing valve. A sealing block is positioned above the dispensing block. A sealing assembly is installed between the outer surface of a piston rod, whose upper end passes through the sealing block, and the inner wall of a mounting hole on the sealing block. The output shaft of a servo drive mechanism, mounted above the sealing block via a bracket, is connected to the upper end of the piston rod, driving the piston rod to move vertically. A guide block is installed at the lower end of the dispensing block. A lower guide hole, whose upper end communicates with the lower end of an upper guide hole, is formed on the vertically extending guide block. The lower end of the lower guide hole extends to the lower end of the guide block. An outlet is formed at the surface, and the sealing part of the sealing head is located below the outlet. The connecting rod of the sealing head extends upward into the lower guide hole and connects with the piston rod. The outer surfaces of the piston rod and the connecting rod of the sealing head, which pass through the upper guide hole and the lower guide hole in sequence, form a guide channel connecting the inlet and outlet between the inner walls of the upper guide hole and the lower guide hole. The rotary motion is converted into linear motion by a servo drive mechanism to drive the sealing head to reciprocate and realize the dispensing operation, thereby improving the speed and sensitivity of dispensing, and thus improving the accuracy of dispensing amount and the consistency of dispensing amount in multiple applications. Attached Figure Description

[0013] Appendix Figure 1 This is a schematic diagram of the overall structure of the high-sensitivity dispensing valve of this utility model;

[0014] Appendix Figure 2 For the appendix Figure 1 A schematic cross-sectional view along the middle AA section;

[0015] Appendix Figure 3 For the appendix Figure 2 Enlarged diagram of point B in the middle.

[0016] In the above drawings: 1, support; 2, glue feeding block; 201, upper glue guiding hole; 202, mounting groove; 3, piston rod; 4, glue sealing head; 41, sealing part; 42, connecting rod part; 51, glue feeding port; 52, glue discharging port; 61, glue feeding flow channel; 62, glue guiding flow channel; 7, sealing block; 71, mounting hole; 72, sealing assembly; 8, servo driving mechanism; 9, glue guiding block; 91, lower glue guiding hole; 92, sealing ring; 10, glue guiding pipe; 11, flange part. DETAILED DESCRIPTION

[0017] The patent can be further clearly understood through the specific examples given below, but they are not a limitation of the patent.

[0018] Example 1: A high-sensitivity glue dispensing valve, comprising: a glue feeding block 2, a vertically extending piston rod 3 and a glue sealing head 4 mounted at the lower end of the piston rod 3, a glue feeding flow channel 61 opened on the glue feeding block 2, one end of which is a glue feeding port 51 located on the side wall of the glue feeding block 2, the other end of the horizontally extending glue feeding flow channel 61 communicates with the upper end of the vertically extending upper glue guiding hole 201 opened in the glue feeding block 2, the upper side of the glue feeding block 2 is provided with a sealing block 7, the outer side surface of the piston rod 3 passing through the sealing block 7 communicates with the inner wall of the mounting hole 71 opened on the sealing block 7, a sealing assembly 72 is arranged therebetween, the output shaft of a servo driving mechanism 8 mounted above the sealing block 7 through a support 1 is in transmission connection with the upper end of the piston rod 3 for driving the piston rod 3 to move in the vertical direction, the servo driving mechanism converts the rotary motion into linear motion to drive the glue sealing head to reciprocate and realize the glue opening and closing operation, thereby improving the speed and sensitivity of the glue opening and closing, and improving the accuracy of the glue discharging amount and the consistency of the glue discharging amount for multiple times.

[0019] The lower end of the glue feeding block 2 is provided with a glue guiding block 9, a vertically extending glue guiding block 9 is provided with a lower glue guiding hole 91, the upper end of which communicates with the lower end of the upper glue guiding hole 201, the lower end of the lower glue guiding hole 91 extends to the lower end face of the glue guiding block 9 to form a glue discharging port 52, the sealing part 41 of the glue sealing head 4 is located below the glue discharging port 52, the connecting rod part 42 of the glue sealing head 4 extends upward into the lower glue guiding hole 91 and is connected with the piston rod 3, the connecting rod part 42 of the piston rod 3 and the glue sealing head 4 passes through the inner wall of the upper glue guiding hole 201 and the lower glue guiding hole 91 respectively, and the outer side surface of the connecting rod part 42 forms a glue guiding flow channel 62 which communicates the glue feeding port 51 and the glue discharging port 52, when the glue sealing head 4 moves to the high position with the piston rod 3, the sealing part 41 thereof is in sealing cooperation with the glue discharging port 52, when the glue sealing head 4 moves to the low position with the piston rod 3, a glue discharging gap is formed between the sealing part 41 and the glue discharging port 52.

[0020] A glue guide pipe 10 is arranged in the upper glue guide hole 201 and the lower glue guide hole 91 and outside the connecting rod part 42 of the piston rod 3 and the glue sealing head 4, the outer wall of the upper and lower ends of the glue guide pipe 10 is connected with the glue feeding block 2 and the glue guide block 9 through a sealing ring respectively, the glue guide flow channel 62 is formed between the inner wall of the glue guide pipe 10 and the connecting rod part 42 of the piston rod 3 and the glue sealing head 4, the inner wall of the lower end of the glue guide pipe 10 is provided with a flange part 11 extending radially inward, and the glue outlet 52 is formed on the inner side of the flange part 11.

[0021] The glue guide pipe 10 is a metal glue guide pipe;

[0022] The lower end of the glue feeding block 2 is provided with a glue guide block 9, the glue guide block 9 is vertically extended, the glue guide block 9 is provided with a lower glue guide hole 91, the lower end of the lower glue guide hole 91 extends to the lower end surface of the glue guide block 9 to form the glue outlet 52, the blocking part 41 of the glue sealing head 4 is located below the glue outlet 52, the connecting rod part 42 of the glue sealing head 4 extends upward into the lower glue guide hole 91 and is connected with the piston rod 3, the outer side surface of the connecting rod part 42 of the piston rod 3 and the glue sealing head 4 which penetrates into the upper glue guide hole 201 and the lower glue guide hole 91 in sequence is connected with the inner wall of the upper glue guide hole 201 and the lower glue guide hole 91 to form the glue guide flow channel 62 which connects the glue feeding outlet 51 and the glue outlet 52, when the glue sealing head 4 moves to the high position with the piston rod 3, the blocking part 41 of the glue sealing head 4 is sealed with the glue outlet 52, when the glue sealing head 4 moves to the low position with the piston rod 3, the glue outlet gap is formed between the blocking part 41 of the glue sealing head 4 and the glue outlet 52.

[0023] The lower surface of the glue feeding block 2 is provided with a mounting groove 202 outside the upper glue guide hole 201, the upper end of the glue guide block 9 is embedded into the mounting groove 202 and is sealed with the inner wall of the mounting groove 202 through a sealing ring 92.

[0024] The lower surface of the glue feeding block 2 is provided with a mounting groove 202 outside the upper glue guide hole 201, the upper end of the glue guide block 9 is embedded into the mounting groove 202 and is sealed with the inner wall of the mounting groove 202 through a sealing ring 92.

[0025] The working principle of the utility model is as follows:

[0026] Through the external glue supply unit, such as platen pump, the glue solution is injected into the glue valve from the glue inlet injection point;

[0027] When the glue dispensing is needed, the servo drive mechanism rotates to drive the plugging head to move downward, thereby moving away from the glue outlet, at this time, the glue outlet gap is formed between the plugging part and the glue outlet, the glue enters from the glue inlet, flows along the glue inlet channel and the glue guide channel, and finally flows out from the glue outlet gap, realizing the glue dispensing;

[0028] When the glue dispensing is needed, the servo drive mechanism rotates to drive the plugging head to move downward, thereby moving away from the glue outlet, at this time, the glue outlet gap is formed between the plugging part and the glue outlet, the glue enters from the glue inlet, flows along the glue inlet channel and the glue guide channel, and finally flows out from the glue outlet gap, realizing the glue dispensing;

[0029] In the above process, the servo drive mechanism is used to convert the rotary motion into linear motion to drive the glue sealing head to reciprocate, realizing the glue opening and closing operation, improving the speed and sensitivity of the glue opening and closing, thereby improving the accuracy of the glue dispensing amount and the consistency of the multiple glue dispensing amounts.

[0030] When the above high sensitivity glue valve is used, the servo drive mechanism is used to convert the rotary motion into linear motion to drive the glue sealing head to reciprocate, realizing the glue opening and closing operation, improving the speed and sensitivity of the glue opening and closing, thereby improving the accuracy of the glue dispensing amount and the consistency of the multiple glue dispensing amounts.

[0031] The above embodiments are only for illustrating the technical concept and characteristics of the utility model, the purpose is to enable the person skilled in the art to understand the content of the utility model and to implement it, and it cannot limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit and essence of the utility model should be covered within the protection scope of the utility model.

Claims

1. A high sensitivity dispensing valve comprising: The glue feeding block (2), the vertically extending piston rod (3) and the glue sealing head (4) mounted on the lower end of the piston rod (3), one glue feeding flow channel (61) is opened on the glue feeding block (2), one end of the glue feeding flow channel (61) is the glue feeding port (51) on the side wall of the glue feeding block (2), the other end of the horizontally extending glue feeding flow channel (61) is communicated with the upper end of the vertically extending upper glue guiding hole (201) opened in the glue feeding block (2), characterized in that: a sealing block (7) is arranged above the glue feeding block (2), the outer surface of the piston rod (3) penetrating through the sealing block (7) is arranged between the inner wall of the mounting hole (71) opened on the sealing block (7) and the outer surface of the piston rod (3), the output shaft of the servo driving mechanism (8) mounted on the upper side of the sealing block (7) through a support (1) is in transmission connection with the upper end of the piston rod (3), for driving the piston rod (3) to move in the vertical direction; The lower end of the glue feeding block (2) is mounted with a glue guiding block (9), a vertically extending glue guiding block (9) is opened with a lower glue guiding hole (91) with the lower end of the upper glue guiding hole (201) communicated, the lower end of the lower glue guiding hole (91) extends to the lower end face of the glue guiding block (9) to form the glue outlet (52), the sealing part (41) of the glue sealing head (4) is located below the glue outlet (52), the connecting rod part (42) of the glue sealing head (4) extends upward into the lower glue guiding hole (91) and is connected with the piston rod (3), the outer surface of the piston rod (3) and the connecting rod part (42) of the glue sealing head (4) penetrating into the upper glue guiding hole (201) and the lower glue guiding hole (91) in sequence is arranged between the inner wall of the upper glue guiding hole (201) and the lower glue guiding hole (91) to form the glue guiding flow channel (62) communicated with the glue feeding port (51) and the glue outlet (52), when the glue sealing head (4) moves to the high position with the piston rod (3), the sealing part (41) is sealed with the glue outlet (52), when the glue sealing head (4) moves to the low position with the piston rod (3), the glue gap is formed between the sealing part (41) and the glue outlet (52).

2. The high sensitivity dispensing valve of claim 1, wherein: The glue guiding pipe (10) is arranged in the upper glue guiding hole (201) and the lower glue guiding hole (91) and on the outer side of the connecting rod part (42) of the piston rod (3) and the glue sealing head (4), the outer wall of the upper and lower ends of the glue guiding pipe (10) is connected with the glue feeding block (2) and the glue guiding block (9) through the sealing ring respectively.

3. The high sensitivity dispensing valve of claim 2, wherein: The glue guiding flow channel (62) is formed between the inner wall of the glue guiding pipe (10) and the connecting rod part (42) of the piston rod (3) and the glue sealing head (4), the inner wall of the lower end of the glue guiding pipe (10) has a flange part (11) radially inward, and the glue outlet (52) is formed on the inner side of the flange part (11).

4. The high sensitivity dispensing valve of claim 2, wherein: The glue guiding pipe (10) is a metal glue guiding pipe.

5. The high sensitivity dispensing valve of claim 1, wherein: The lower surface of the glue feeding block (2) and the upper end of the glue guiding block (9) are embedded in the installation groove (202) and sealed with the inner wall of the installation groove (202) through a sealing ring (92).