Glue stopping mechanism and double-component glue dispensing device with glue stopping mechanism

Abstract

The utility model discloses a glue stopping mechanism and a two-component glue dispensing device, the glue stopping mechanism comprises a support, a cylinder, a glue stopping valve and a glue outlet head with a glue outlet runner, a cavity is arranged in a cylinder body of the cylinder, a piston disc positioned in the cavity is connected with the upper end of a piston rod, and the upper end of the piston rod is connected with the glue stopping valve. The lower end of the piston rod is connected with the upper end of a valve element of the glue stopping valve through a connecting rod arranged between the upper supporting part and the lower supporting part, a guide ring installed on the upper supporting part is arranged on the outer side of the connecting rod, and the inner wall of the guide ring is in sliding fit with the outer circumferential face of the connecting rod. When the lower surface of the piston disc makes contact with the lower wall of the cavity, a first gap is formed between the lower end of the connecting rod and the upper surface of the lower supporting part, and when the upper surface of the flange part makes contact with the lower surface of the guide ring, a second gap is formed between the lower end of the connecting rod and the upper surface of the lower supporting part. A second gap is formed between the upper surface of the piston disc and the upper wall of the cavity. According to the utility model, the glue outlet precision and consistency are improved, and the service life of the whole structure is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of dispensing, in particular to a glue stopping mechanism and a two-component dispensing device with the glue stopping mechanism. Background Art

[0002] In industrial production, dispensing is required in many places, such as integrated circuits, semiconductor packaging, printed circuit boards, color liquid crystal displays, electronic components, automotive parts, etc. Most production scenarios only require single-component glue for dispensing, but some production scenarios require mixing two different glue liquids in a certain proportion, usually through a two-component dispensing device to achieve automatic glue mixing and dispensing. In the existing two-component dispensing device, the reciprocating movement of the upper valve core of the glue stopping valve is driven by a cylinder to realize opening and closing of the glue. However, during the long-term reciprocating movement of the cylinder driving the valve core, it is impossible to ensure the concentricity of the repeated movement of the valve needle, which easily damages the valve core, and it is also impossible to ensure the accuracy of glue stopping. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a glue stopping mechanism and a two-component dispensing device with the glue stopping mechanism, which not only improve the glue dispensing accuracy and consistency, but also improve the service life of the overall structure.

[0004] To solve the above technical problem, the technical scheme adopted by the utility model is as follows: A glue stopping mechanism includes: a bracket, a cylinder, a glue stopping valve, and a glue outlet head with a glue outlet channel. The cylinder and the glue stopping valve are respectively installed on the bracket. The upper end of the glue outlet head is connected to the body part of the glue stopping valve. The lower end of the piston rod of the cylinder is connected to the upper end of the valve core of the glue stopping valve. The lower end of the valve core that can move in the vertical direction cooperates with the glue outlet channel to control the opening and closing of the glue outlet channel. The upper support part and the lower support part of the bracket are both horizontally arranged and spaced apart in the vertical direction. The cylinder body of the cylinder is installed on the upper surface of the upper support part, and the upper end of the body part of the glue stopping valve connected to the lower end of the glue outlet head is installed on the lower support part. There is a cavity in the cylinder body of the cylinder. The piston disk located in this cavity is connected to the upper end of the piston rod. The lower end of the piston rod is connected to the upper end of the valve core of the glue stopping valve through a connecting rod arranged between the upper support part and the lower support part. A guide ring installed on the upper support part is arranged outside the connecting rod. The inner wall of this guide ring is in sliding fit with the outer circumferential surface of the connecting rod. A flange part extending radially outward is arranged on the connecting rod and below the guide ring. When the lower surface of the piston disk contacts the lower wall of the cavity, there is a first gap between the lower end of the connecting rod and the upper surface of the lower support part. When the upper surface of the flange part contacts the lower surface of the guide ring, there is a second gap between the upper surface of the piston disk and the upper wall of the cavity.

[0005] The further improved scheme in the above technical scheme is as follows:

[0006] 1. In the above solution, the upper support part and the lower support part of the bracket are connected by a vertical support part.

[0007] 2. In the above solution, the glue stop valve is a Y-shaped glue stop valve or a T-shaped glue stop valve.

[0008] 3. In the above solution, a glue inlet channel communicating with the glue outlet channel is formed on the body part of the glue stop valve.

[0009] A two-component dispensing device is further provided, including: a dual-liquid screw valve and a mixing glue pipe with one end connected to the dual-liquid screw valve, and the other end of the mixing glue pipe is installed with the above-mentioned glue stop mechanism.

[0010] The further improved solutions in the above technical solutions are as follows:

[0011] 1. In the above solution, a refrigeration mechanism is arranged outside the glue stop valve and the glue outlet head of the mixing glue pipe and the glue stop mechanism.

[0012] 2. In the above solution, a water receiving tray is arranged below the refrigeration mechanism and outside the glue outlet head.

[0013] Due to the application of the above technical solutions, the present utility model has the following advantages compared with the prior art:

[0014] For the glue stop mechanism of the present utility model and the two-component dispensing device having the glue stop mechanism, the upper support part and the lower support part of the bracket of the glue stop mechanism are both horizontally arranged and spaced apart in the vertical direction. The cylinder body of the cylinder is installed on the upper surface of the upper support part, and the upper end of the body part of the glue stop valve with the lower end connected to the glue outlet head is installed on the lower support part. A cavity is formed in the cylinder body of the cylinder, and a piston disk located in this cavity is connected to the upper end of the piston rod. The lower end of the piston rod is connected to the upper end of the valve core of the glue stop valve through a connecting rod arranged between the upper support part and the lower support part. A guide ring installed on the upper support part is arranged outside the connecting rod, and the inner wall of this guide ring is in sliding fit with the outer circumferential surface of the connecting rod. A flange part extending radially outward is arranged on the connecting rod and below the guide ring. When the lower surface of the piston disk contacts the lower wall of the cavity, there is a first gap between the lower end of the connecting rod and the upper surface of the lower support part. When the upper surface of the flange part contacts the lower surface of the guide ring, there is a second gap between the upper surface of the piston disk and the upper wall of the cavity. It can not only ensure the repeatability and concentricity of the valve core in the glue stop valve during long-term reciprocating movement, but also effectively avoid the damage to each component caused by the up and down stop impacts, improve both the glue dispensing accuracy and consistency, and improve the service life of the overall structure. Description of the Drawings

[0015] Appendix Figure 1It is a schematic structural diagram of the glue stopping mechanism of the present utility model;

[0016] Appendix Figure 2 It is a structural sectional view of the glue stopping mechanism of the present utility model in a state;

[0017] Appendix Figure 3 It is a structural sectional view of the glue stopping mechanism of the present utility model in another state;

[0018] Appendix Figure 4 It is a schematic overall structural diagram of the two-component dispensing device of the present utility model.

[0019] In the above drawings: 100, dual-liquid screw valve; 200, mixing rubber tube; 300, refrigeration mechanism; 301, water receiving tray; 1, bracket; 11, upper support part; 12, lower support part; 13, vertical support part; 2, cylinder; 21, piston rod; 22, cylinder body; 221, cavity; 23, piston disc; 3, glue stopping valve; 31, body part; 32, valve core; 33, glue inlet channel; 4, glue outlet head; 41, glue outlet channel; 5, connecting rod; 51, flange part; 6, guide ring; 71, first gap; 72, second gap. Specific embodiments

[0020] The present patent can be further clearly understood through the following specific embodiments given, but they do not limit the present patent.

[0021] Embodiment 1: A glue stopping mechanism, comprising: a bracket 1, a cylinder 2, a glue stopping valve 3, and a glue outlet head 4 having a glue outlet channel 41. The cylinder 2 and the glue stopping valve 3 are each mounted on the bracket 1. The upper end of the glue outlet head 4 is connected to the body portion 31 of the glue stopping valve 3. The lower end of the piston rod 21 of the cylinder 2 is connected to the upper end of the valve core 32 of the glue stopping valve 3. The lower end of the valve core 32 that can move in the vertical direction cooperates with the glue outlet channel 41 to control the opening and closing of the glue outlet channel 41. The upper support portion 11 and the lower support portion 12 of the bracket 1 are both horizontally arranged and spaced apart in the vertical direction. The cylinder body 22 of the cylinder 2 is mounted on the upper surface of the upper support portion 11, and the upper end of the body portion 31 of the glue stopping valve 3 connected to the lower end of the glue outlet head 4 is mounted on the lower support portion 12. A cavity 221 is provided in the cylinder body 22 of the cylinder 2. A piston disk 23 located in this cavity 221 is connected to the upper end of the piston rod 21. The lower end of the piston rod 21 is connected to the upper end of the valve core 32 of the glue stopping valve 3 through a connecting rod 5 provided between the upper support portion 11 and the lower support portion 12. A guide ring 6 mounted on the upper support portion 11 is provided on the outer side of the connecting rod 5. The inner wall of this guide ring 6 is in sliding fit with the outer circumferential surface of the connecting rod 5. A radially outward flange portion 51 is provided on the connecting rod 5 and below the guide ring 6. When the lower surface of the piston disk 23 contacts the lower wall of the cavity 221, the glue outlet channel 41 is in a closed state and there is a first gap 71 between the lower end of the connecting rod 5 and the upper surface of the lower support portion 12. When the upper surface of the flange portion 51 contacts the lower surface of the guide ring 6, the glue outlet channel 41 is in an open state and there is a second gap 72 between the upper surface of the piston disk 23 and the upper wall of the cavity 221.

[0022] The upper support portion 11 and the lower support portion 12 of the above-mentioned bracket 1 are connected by a vertical support portion 13;

[0023] The above-mentioned glue stopping valve 3 is a Y-shaped glue stopping valve; a glue inlet channel 33 communicating with the glue outlet channel 41 is provided on the body portion 31 of the above-mentioned glue stopping valve 3.

[0024] Embodiment 2: A glue stopping mechanism, comprising: a bracket 1, a cylinder 2, a glue stopping valve 3, and a glue outlet head 4 having a glue outlet channel 41. The cylinder 2 and the glue stopping valve 3 are each mounted on the bracket 1. The upper end of the glue outlet head 4 is connected to the body portion 31 of the glue stopping valve 3. The lower end of the piston rod 21 of the cylinder 2 is connected to the upper end of the valve core 32 of the glue stopping valve 3. The lower end of the valve core 32 that can move in the vertical direction cooperates with the glue outlet channel 41 to control the opening and closing of the glue outlet channel 41. The upper support portion 11 and the lower support portion 12 of the bracket 1 are both horizontally arranged and spaced apart in the vertical direction. The cylinder body 22 of the cylinder 2 is mounted on the upper surface of the upper support portion 11, and the upper end of the body portion 31 of the glue stopping valve 3 connected to the lower end of the glue outlet head 4 is mounted on the lower support portion 12. A cavity 221 is provided in the cylinder body 22 of the cylinder 2. A piston disk 23 located in this cavity 221 is connected to the upper end of the piston rod 21. The lower end of the piston rod 21 and the upper end of the valve core 32 of the glue stopping valve 3 are connected by a connecting rod 5 provided between the upper support portion 11 and the lower support portion 12. A guide ring 6 mounted on the upper support portion 11 is provided on the outer side of the connecting rod 5. The inner wall of this guide ring 6 is in sliding fit with the outer circumferential surface of the connecting rod 5. A radially outward flange portion 51 is provided on the connecting rod 5 and below the guide ring 6. When the lower surface of the piston disk 23 contacts the lower wall of the cavity 221, the glue outlet channel 41 is in a closed state and there is a first gap 71 between the lower end of the connecting rod 5 and the upper surface of the lower support portion 12. When the upper surface of the flange portion 51 contacts the lower surface of the guide ring 6, the glue outlet channel 41 is in an open state and there is a second gap 72 between the upper surface of the piston disk 23 and the upper wall of the cavity 221.

[0025] The above glue stopping valve 3 is a T-shaped glue stopping valve.

[0026] Embodiment 3: A two-component dispensing device, comprising: a two-component screw valve 100 and a mixing glue tube 200 with one end connected to the two-component screw valve 100. The other end of the mixing glue tube 200 is provided with the above glue stopping mechanism.

[0027] Embodiment 4: A two-component dispensing device, comprising: a two-component screw valve 100 and a mixing glue tube 200 with one end connected to the two-component screw valve 100. The other end of the mixing glue tube 200 is provided with the above glue stopping mechanism.

[0028] A refrigeration mechanism 300 is provided on the outer sides of the above mixing glue tube 200, the glue stopping valve 3 of the glue stopping mechanism, and the glue outlet head 4; a water receiving tray 301 is provided below the refrigeration mechanism 300 and on the outer side of the glue outlet head 4.

[0029] When the above-mentioned glue stopping mechanism and the two-component dispensing device with the glue stopping mechanism are adopted, it can not only ensure the repeatability and concentricity of the valve core in the glue stopping valve during long-term reciprocating movement, but also effectively avoid the damage to each component caused by the up-and-down stop impact. It not only improves the glue dispensing accuracy and consistency, but also improves the service life of the overall structure.

[0030] The above embodiments are only used to illustrate the technical concept and characteristics of the present invention, and the purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly, and it cannot be used to limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. A glue stopping mechanism, comprising: A support (1), a cylinder (2), a glue stop valve (3) and a glue outlet head (4) having a glue outlet flow channel (41), wherein the cylinder (2) and the glue stop valve (3) are each mounted on the support (1), the upper end of the glue outlet head (4) is connected to the main body (31) of the glue stop valve (3), the lower end of the piston rod (21) of the cylinder (2) is connected to the upper end of the valve core (32) of the glue stop valve (3), and the lower end of the valve core (32) movable in the vertical direction cooperates with the glue outlet flow channel (41). A switch for controlling a glue outlet flow channel (41), characterized in that: the upper support portion (11) and the lower support portion (12) of the bracket (1) are both arranged horizontally and spaced apart in the vertical direction; the cylinder body (22) of the cylinder (2) is mounted on the upper surface of the upper support portion (11); the upper end of the main body (31) of the glue stop valve (3) connected to the glue outlet head (4) at the lower end is mounted on the lower support portion (12); and the cylinder body (22) of the cylinder (2) has a cavity (221) therein. The piston disc (23) located in the cavity (221) is connected to the upper end of the piston rod (21), and the lower end of the piston rod (21) is connected to the upper end of the valve core (32) of the glue stop valve (3) through a connecting rod (5) arranged between the upper support part (11) and the lower support part (12). The outer side of the connecting rod (5) is provided with a guide ring (6) installed on the upper support part (11). The inner wall of the guide ring (6) is slidably matched with the outer circumferential surface of the connecting rod (5). The connecting rod (5) A flange portion (51) is provided on and below the guide ring (6) and extends radially outward. When the lower surface of the piston disc (23) contacts the lower wall of the cavity (221), a first gap (71) is provided between the lower end of the connecting rod (5) and the upper surface of the lower support portion (12). When the upper surface of the flange portion (51) contacts the lower surface of the guide ring (6), a second gap (72) is provided between the upper surface of the piston disc (23) and the upper wall of the cavity (221).

2. The glue stopping mechanism according to claim 1, characterized in that: The upper support portion (11) and the lower support portion (12) of the bracket (1) are connected via a vertical support portion (13).

3. The glue stopping mechanism according to claim 1, characterized in that: The glue stop valve (3) is a Y-type glue stop valve or a T-type glue stop valve.

4. The glue stopping mechanism according to claim 3, characterized in that: The main body (31) of the glue stop valve (3) is provided with a glue inlet flow channel (33) which is in communication with the glue outlet flow channel (41).

5. A two-component dispensing device, comprising: A double-liquid screw valve (100) and a mixing hose (200) connected to the double-liquid screw valve (100) at one end, wherein the other end of the mixing hose (200) is provided with a glue stopping mechanism as claimed in any one of claims 1 to 4.

6. The two-component dispensing device according to claim 5, characterized in that: A refrigeration mechanism (300) is arranged outside the mixing rubber hose (200), the rubber stop valve (3) of the rubber stop mechanism, and the rubber outlet head (4).

7. The two-component dispensing device according to claim 6, characterized in that: A water receiving tray (301) is provided at the lower part of the refrigeration mechanism (300) and located outside the glue dispensing head (4).

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