Improved structure of dispensing machine

Abstract

The utility model discloses an improved structure of point gum machine, containing point gum machine main part, glue pipe support, glue pipe, diversion block and liquid level response fixed block. Point gum machine main part has piezoelectric valve and liquid level sensor, and the glue pipe is located at one side of piezoelectric valve, and the glue outlet is located at the bottom. The glue pipe support has a snap ring and a support mounting seat, the support mounting seat is fixed on one side of the piezoelectric valve, and the snap ring fixes the glue pipe. The diversion block is installed on the bottom of the glue pipe and the piezoelectric valve mounting base, the passage mouth of the diversion block corresponds to the glue outlet of the glue pipe, and the center of the passage mouth is greater than or equal to the radius of the glue pipe from the outer peripheral wall of the piezoelectric valve. The liquid level sensor is installed on the liquid level response fixed block. The utility model can adapt to the 300cc glue pipe by replacing the diversion block, adjusting the position of the liquid level sensor and improving the glue pipe support, is easy to transform and popularize. The upgraded glue pipe can reduce the glue changing frequency and glue loss, improve the utilization rate of glue, improve the point gum efficiency, and the improved point gum machine can be compatible with the existing defoaming machine.

Description

Technical Field

[0001] This utility model relates to the technical field of dispensing machines, and in particular to an improved structure of a dispensing machine. Background Technology

[0002] In the production of electronic components, the dispensing process for nickel sheets and NTC components typically uses 50g packages of adhesive. However, this small packaging size has significant drawbacks: firstly, a considerable amount of adhesive residue remains in the dispensing tube each time the material is changed, resulting in an adhesive wastage rate exceeding 20% ​​and material waste; secondly, frequent adhesive changes require machine downtime, necessitating adhesive replacement approximately every 1.5 hours, severely impacting equipment uptime and increasing production and time costs.

[0003] To address these issues, the market has proposed upgrading adhesive packaging to a larger 300cc size. However, existing dispensing equipment is primarily designed for 50g small-sized tubing. Directly using 300cc tubing presents numerous equipment compatibility problems, such as insufficient parallel distance between the center of the Luer interface connecting the dispensing machine's piezoelectric valve and the tubing, and mismatch between the liquid level sensor position and the tubing size. These issues prevent the proper use of 300cc tubing for dispensing operations.

[0004] In view of this, the present invention addresses the numerous shortcomings and inconveniences caused by the inability of existing dispensing machines to directly install large packages of adhesive. Through in-depth design, research, improvement, and trial production, the present invention was developed. Utility Model Content

[0005] The purpose of this invention is to provide an improved structure for a dispensing machine that is compatible with large-size adhesive tubes, so as to solve the defects of high adhesive loss rate and low equipment uptime in the existing dispensing machine that uses small-size adhesive.

[0006] To achieve the above objectives, the solution of this utility model is:

[0007] An improved structure of a dispensing machine includes a dispensing machine body, a hose support, a hose, a flow guide block, and a liquid level sensing fixing block. The dispensing machine body includes a piezoelectric valve and a liquid level sensor. The hose is disposed on one side of the piezoelectric valve of the dispensing machine body, with the hose outlet located at the bottom end of the hose. The hose support includes a support mounting base and a retaining ring. The support mounting base is fixedly disposed on the piezoelectric valve of the dispensing machine body, and the retaining ring is disposed on the support mounting base to fix the hose. The flow guide block is disposed at the bottom of the hose and on the mounting base of the piezoelectric valve. The top of the flow guide block has a channel corresponding to the hose outlet. The distance between the center of the channel and the outer peripheral wall of the piezoelectric valve is greater than or equal to the radius of the hose. The hose outlet is installed on the channel of the flow guide block. The liquid level sensor is disposed on the liquid level sensing fixing block, which is mounted on the support mounting base of the hose support.

[0008] Furthermore, the hose has a capacity of 300cc and a radius of 27.5mm, and the distance between the center of the channel opening of the guide block and the outer peripheral wall of the piezoelectric valve is greater than or equal to 27.5mm.

[0009] Furthermore, a translation pad is provided between the dispensing machine body and the liquid level sensor.

[0010] Furthermore, the retaining ring of the hose support is locked to the top of the support mounting base by screws, and the inner diameter of the retaining ring corresponds to the outer diameter of the hose.

[0011] Furthermore, the retaining ring of the hose support has an opening, which makes the retaining ring elastic. When the hose is installed, the hose is inserted through the opening of the retaining ring, and the retaining ring supports the hose.

[0012] Furthermore, the retaining ring of the hose support has a double-layer structure. The inner layer that contacts the hose is a protective layer, which is made of soft silicone or sponge, and the outer layer is made of metal.

[0013] Furthermore, the bracket mounting base of the hose support has a bracket mounting groove and a liquid level sensing mounting groove. The bracket mounting groove is fixed together with the piezoelectric valve, and the liquid level sensing mounting groove is used to install the liquid level sensing fixing block. The peripheral wall of the end of the liquid level sensing mounting groove facing the retaining ring is an arc corresponding to the outer diameter of the hose.

[0014] Furthermore, the liquid level sensing fixing block has a sensor mounting groove, and the liquid level sensor is installed in the sensor mounting groove.

[0015] With the above structure, the improved dispensing machine of this invention can be easily adapted to 300cc dispensing tubing by simply replacing the existing guide block, adjusting the position of the liquid level sensor, and improving the tubing support. The modification is simple and easy to promote and apply. Compared with existing technologies, it has the following advantages:

[0016] This invention upgrades the existing 50cc glue hose to a larger 300cc hose, significantly reducing the frequency of glue changes and minimizing glue loss, thus greatly improving glue utilization and resulting in significant material cost reduction. Furthermore, the reduced glue change frequency avoids wasted dispensing machine operation due to frequent hose changes, thereby increasing production efficiency. The modified dispensing machine is highly compatible with existing degassing machine adapters, eliminating the need to purchase a separate degassing machine and reducing modification costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a three-dimensional schematic diagram of Embodiment 1 of the hose support of this utility model.

[0019] Figure 3 This is a three-dimensional schematic diagram of Embodiment 2 of the hose support of this utility model.

[0020] Figure 4 This is a schematic diagram of the flow guide block of this utility model.

[0021] Figure 5 This is a schematic diagram of the liquid level sensing fixing block of this utility model.

[0022] Figure 6 This is a schematic diagram of the structure of the liquid level sensing translation pad of this utility model.

[0023] Label Explanation:

[0024] 1. Dispensing machine body; 11. Piezoelectric valve; 12. Liquid level sensor; 2. Hose support; 21. Support mounting base; 211. Support mounting groove; 212. Liquid level sensor mounting groove; 22. Snap ring; 221. Opening; 3. Hose; 31. Dispensing port; 4. Guide block; 41. Channel opening; 5. Liquid level sensor fixing block; 51. Sensor mounting groove; 6. Translation pad. Detailed Implementation

[0025] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0026] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0027] like Figures 1 to 6As shown, this utility model discloses an improved structure of a dispensing machine, which includes a dispensing machine body 1, a tube support 2, a tube 3, a guide block 4, and a liquid level sensing and fixing block 5. The dispensing machine body 1 includes a piezoelectric valve 11 and a liquid level sensor 12. The tube 3 is disposed on one side of the piezoelectric valve 11 of the dispensing machine body 1, and the outlet 31 of the tube 3 is located at the bottom end of the tube 3. The tube support 2 includes a support mounting base 21 and a retaining ring 22. The support mounting base 21 is fixedly disposed on the piezoelectric valve 11 of the dispensing machine body 1, and the retaining ring 22 is disposed on the support... The hose 3 is fixed on the bracket mounting base 21. The guide block 4 is set at the bottom of the hose 3 and on the mounting base of the piezoelectric valve 11. The top of the guide block 4 is provided with a channel 41 corresponding to the outlet 31 of the hose 3. The distance between the center of the channel 41 and the outer peripheral wall of the piezoelectric valve 11 is greater than or equal to the radius of the hose 3. The outlet 31 of the hose 3 is installed on the channel 41 of the guide block 4. The liquid level sensor 12 is set on the liquid level sensing fixing block 5. The liquid level sensing fixing block 5 is installed on the bracket mounting base 21 of the hose support 2.

[0028] In this embodiment, the hose 3 has a capacity of 300cc and a radius of 27.5mm. The distance between the center of the channel opening 41 of the guide block and the outer peripheral wall of the piezoelectric valve 11 is 27.5mm. This utility model replaces the existing guide block with an improved and enlarged guide block. The center position of the channel opening 41 of the improved guide block 4 is shifted outward by 19mm relative to the original guide block, so that the distance from the center of the interface to the valve body meets the filling space requirements of the 300cc hose, ensuring that the 300cc hose 3 can be smoothly installed and connected to the piezoelectric valve 11.

[0029] Preferably, a translation pad 6 is provided between the dispensing machine body 1 and the liquid level sensor 12 to realize the translation of the liquid level sensor 12. This is achieved by adding the translation pad 6 between the liquid level sensor 12 and the dispensing machine body 1, enabling the liquid level sensor 12 to accurately sense the glue level in the 300cc glue tube 3. Specifically, the translation pad 6 translates the liquid level sensor 12 horizontally by 19mm.

[0030] like Figure 2 The following is an embodiment of the hose support 2. The retaining ring 22 of the hose support 2 is locked to the top of the support mounting base 21 by screws. The inner diameter of the retaining ring 22 corresponds to the outer diameter of the hose 3. During installation, the hose 3 can be inserted into the retaining ring 22 from the top of the retaining ring 22. The retaining ring 22 plays a role in assisting to support the hose 3.

[0031] like Figure 3 The following is an embodiment 2 of the hose support 2. The hose support 2 has an opening 221 on the retaining ring 22, which gives the retaining ring 22 a certain elasticity. When the hose 3 is installed, the hose 3 is inserted through the opening 221 of the retaining ring 22, and the hose 3 is supported by the retaining ring 22.

[0032] Preferably, the retaining ring 22 of the hose support 2 has a double-layer structure. The inner layer that contacts the hose 3 is a protective layer, which can be made of soft silicone or sponge, and the outer layer is made of metal, such as stainless steel or iron sheet.

[0033] like Figure 2 or Figure 3 As shown, the bracket mounting base 21 of the hose bracket 2 has a bracket mounting groove 211 and a liquid level sensing mounting groove 212. The bracket mounting groove 211 is fixed together with the mounting post on one side of the piezoelectric valve 11. The liquid level sensing mounting groove 212 is used to install the liquid level sensing fixing block 5. The peripheral wall of the end of the liquid level sensing mounting groove 212 facing the retaining ring 22 is an arc corresponding to the outer diameter of the hose 3.

[0034] like Figure 4 As shown, the liquid level sensing fixing block 5 has a sensor mounting groove 51, and the liquid level sensor 12 is installed in the sensor mounting groove 51, with the liquid level sensor 12 closely attached to the wall of the rubber tube 3.

[0035] Before installing the liquid level sensor 12, its sensitivity is calibrated in two stages: First, align the liquid level sensor 12 with the piston position of the 300cc tubing 3, pressing it firmly against the tubing wall. Rotate the mechanical adjustment screw until the sensor light goes out, then turn it counterclockwise by 90°. Next, align the liquid level sensor with the full glue position of the 300cc tubing 3, about 1mm away from the tubing wall. Slowly rotate the mechanical adjustment screw clockwise until the sensor light just turns on. After the sensitivity calibration of the liquid level sensor 12 is completed, install the liquid level sensor 12 in the sensor mounting slot 51 of the liquid level sensor fixing block 5. Then, install the liquid level sensor fixing block 5 in the liquid level sensor mounting slot 212 of the tubing bracket 2, ensuring that the liquid level sensor 12 is pressed firmly against the tubing wall of the tubing 3. This design can prevent the problem of the tubing 3 running dry without triggering an alarm.

[0036] This invention conducted installation compatibility and performance tests on the modified dispensing machine. Test results show that after upgrading the dispensing tube 3 to the 300cc specification, the dispensing machine operates normally without structural interference. The liquid level sensor 12 accurately senses the glue level and promptly alarms when the remaining glue reaches the alarm threshold. The dispensing tube 3 is installed stably without shaking or leakage. By comparing the glue consumption and remaining glue loss before and after the modification, it was found that the 300cc specification packaging reduces glue consumption per piece by approximately 15.5% and reduces remaining glue loss by approximately 14.66%, significantly improving glue utilization.

[0037] Furthermore, during the small-batch trial operation, corresponding improvement measures were taken to address issues such as glue depletion without alarm and glue leakage due to hose wobbling. The sensor sensitivity was calibrated in two stages and the sensor position was fixed, resolving the issues of sensor sensitivity mismatch and unstable relative distance. The closed-loop design of the retaining ring 22 structure of the hose support 2 was modified and Teflon tape was wrapped around it, resolving the hose wobbling and glue leakage issues. After these improvements, the dispensing machine operated stably, and similar problems did not recur.

[0038] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. An improved structure of a glue dispenser, characterized in that, include: The dispensing machine includes a main body, a hose support, a hose, a flow guide block, and a liquid level sensor fixing block. The main body includes a piezoelectric valve and a liquid level sensor. The hose is located on one side of the piezoelectric valve of the dispensing machine, with the hose outlet located at the bottom end. The hose support includes a support mounting base and a retaining ring. The support mounting base is fixedly mounted on the piezoelectric valve of the dispensing machine, and the retaining ring is mounted on the support mounting base to fix the hose. The flow guide block is located at the bottom of the hose and on the mounting base of the piezoelectric valve. The top of the flow guide block has a channel corresponding to the hose outlet. The distance between the center of the channel and the outer peripheral wall of the piezoelectric valve is greater than or equal to the radius of the hose. The hose outlet is mounted on the channel of the flow guide block. The liquid level sensor is mounted on the liquid level sensor fixing block, which is mounted on the support mounting base of the hose support.

2. The improvement in a glue dispenser as set forth in claim 1, wherein: The hose has a capacity of 300cc and a radius of 27.5mm. The distance between the center of the channel opening of the guide block and the outer peripheral wall of the piezoelectric valve is greater than or equal to 27.5mm.

3. The improvement in a glue dispenser as defined in claim 1 wherein: A translation pad is provided between the dispensing machine body and the liquid level sensor.

4. The improvement in a glue dispenser as set forth in claim 1, wherein: The retaining ring of the hose support is secured to the top of the support mounting base with screws, and the inner diameter of the retaining ring corresponds to the outer diameter of the hose.

5. The improved structure of a dispensing machine as described in claim 1, characterized in that: The hose support has an opening on the retaining ring, which makes the retaining ring elastic. When installing the hose, the hose is inserted through the opening of the retaining ring, and the retaining ring supports the hose.

6. The improved structure of a dispensing machine as described in claim 1, characterized in that: The retaining ring of the hose support has a double-layer structure. The inner layer that contacts the hose is a protective layer, which is made of soft silicone or sponge, and the outer layer is made of metal.

7. The improved structure of a dispensing machine as described in claim 1, characterized in that: The hose support bracket has a bracket mounting slot and a liquid level sensor mounting slot. The bracket mounting slot is fixed together with the piezoelectric valve. The liquid level sensor mounting slot is used to install the liquid level sensor fixing block. The peripheral wall of the liquid level sensor mounting slot facing the retaining ring is an arc corresponding to the outer diameter of the hose.

8. The improved structure of a dispensing machine as described in claim 1, characterized in that: The liquid level sensing fixing block has a sensor mounting slot, and the liquid level sensor is installed in the sensor mounting slot.

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