Mistake proofing device for detecting empty glue of glue dispensing system
By using small glue buckets and ring metal induction sensors in the dispensing system to detect the remaining glue, the problem of not being discovered in time when the glue is used up in the fully automatic servo screw dispenser is solved, and the stable monitoring of glue usage and product quality are achieved. promote.
Patent Information
- Application Number
- CN202421016633.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-11
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-05-11
AI Technical Summary
In a fully automatic servo screw dispenser, the glue in the metal glue barrel cannot be monitored in time when it is used, resulting in the product not being dispensed or the glue composition is incorrect, affecting the product quality and production rhythm.
An error-proof device for detecting and dispensing systems is designed, including a small glue barrel, annular metal sensing sensor and piston. The pressure difference and metal sensor are used to detect the remaining glue, and the buzzer alarm is used to ensure sufficient glue.
The monitoring of the height of glue in large metal glue barrels is achieved, the stability of the dispensing amount and product quality is ensured, and the structure is simple, and it is suitable for single-liquid and double-liquid screw valve systems, reducing the production cost.
Smart Images
Figure CN222306282U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of glue dispensing systems, and particularly relates to an error-proofing device for detecting empty glue in a glue dispensing system. Background Art
[0002] The fully automatic servo screw dispensing machine is a device that automatically dispenses glue to single or multiple products by using a dispensing controller to determine the quantity and position of glue. At present, the loading of this small dispensing machine is done by placing a plastic glue barrel into a metal pressurized sealing glue barrel, applying air pressure to the metal glue barrel through the dispensing controller to inject the glue into the dispensing valve or screw pump, and then dispensing the product. Its disadvantage is that the glue in the metal glue barrel cannot be monitored to see if it has been used up. When the glue is used up and the operator does not find it in time, it will cause the product to not be dispensed or one of the AB glues is missing. The product has no glue or the glue composition is incorrect, which will cause product performance defects and affect product quality and production rhythm. Utility Model Content
[0003] The purpose of the utility model is to provide an error-proofing device for detecting empty glue in a dispensing system, which can give an early warning to prevent the glue from running out, ensure the stability of dispensing for each product, and improve production stability and product quality.
[0004] The purpose of the utility model is achieved as follows: an error-proofing device for detecting empty glue in a dispensing system, comprising a screw dispensing device, the screw dispensing device is connected to a glue storage device through a glue injection pipeline, at least one error-proofing device is arranged on the glue injection pipeline, the error-proofing device comprises a small glue barrel, a three-way joint, an air inlet pipe and an annular metal induction sensor, glue, a piston and a small metal ball are arranged in the small glue barrel from bottom to top, the piston can move up and down along the inner wall of the small glue barrel, the annular metal induction sensor is sleeved on the outside of the bottom of the small glue barrel, the three-way joint comprises a first inlet, a second inlet and an outlet, the first inlet is connected to a glue injection pipeline, the second inlet is connected to the bottom of the small glue barrel, the outlet is connected to the screw dispensing device, the pressure in the glue storage device is P1, the air inlet pipe is connected to the top of the small glue barrel, and is used to apply air pressure P2 to the piston, and P2<P1.
[0005] When the utility model is used, when the glue storage device is in a glue-containing state, because the pressure in the glue storage device is greater than the pressure in the small glue barrel, the piston and the metal ball rise to the top of the small glue barrel, and the annular metal sensor cannot detect the metal ball. The glue in the glue storage device passes through the glue injection pipeline, the first inlet and the outlet, and enters the screw dispensing device; when the glue storage device is in a glue-free state, the glue inside the small glue barrel enters the screw dispensing device through the second inlet and the outlet under the action of air pressure, and the piston gradually descends until the metal ball falls into the sensor range, and the induction light of the annular metal sensor lights up to play an early warning role. The beneficial effects of the utility model are: the large metal glue barrel that is not easy to monitor is transformed into a height monitoring device for monitoring the glue in the small glue barrel, and the pressure difference is used to achieve the directional flow of the glue, so as to realize the feasibility of detection, thereby ensuring the continuity of the glue in the pipeline, and then ensuring the stability of the product dispensing amount; the advance degree of the early warning can be controlled by changing the relative position of the annular metal sensor and the small glue barrel.
[0006] As a further improvement of the present invention, the metal balls are steel balls with a diameter of 8 mm.
[0007] As a further improvement of the utility model, the annular metal induction sensor is connected to the buzzer alarm via an electrical signal.
[0008] As a further improvement of the utility model, the error-proofing device further includes a bracket, and the small glue barrel is connected to the screw dispensing device via the bracket.
[0009] As a further improvement of the utility model, two error-proofing devices are arranged on the glue injection pipeline, which are a first error-proofing device and a second error-proofing device respectively. The glue injection pipeline includes a first pipeline and a second pipeline. The glue storage device includes a first large glue barrel and a second large glue barrel. The screw dispensing device includes a dual-liquid servo screw valve and a mixing needle. The dual-liquid servo screw valve includes a valve body, a first glue inlet and a second glue inlet. The first large glue barrel is connected to the first error-proofing device and the first glue inlet in sequence through a first pipeline, and the second large glue barrel is connected to the second error-proofing device and the second glue inlet in sequence through a second pipeline.
[0010] As a further improvement of the present utility model, the first glue inlet and the second glue inlet are symmetrically distributed on both sides of the valve body.
[0011] As a further improvement of the present invention, the first large glue barrel and the small glue barrel of the first error-proofing device are both filled with glue A, and the second large glue barrel and the small glue barrel of the second error-proofing device are both filled with glue B. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the structure of the utility model.
[0013] Figure 2 This is an enlarged view of the error-proofing device of the utility model.
[0014] Among them, 1 screw dispensing device, 101 mixing needle, 102 valve body, 103 first glue inlet, 104 second glue inlet, 2 glue injection pipeline, 201 first pipeline, 202 second pipeline, 3 glue storage device, 301 first large glue barrel, 302 second large glue barrel, 4 first error proofing device, 5 second error proofing device, 6 small glue barrel, 7 three-way connector, 701 first inlet, 702 second inlet, 703 outlet, 8 air inlet pipe, 9 bracket, 10 annular metal induction sensor, 11 piston, 12 metal ball, 13 glue A, 14 glue B. DETAILED DESCRIPTION
[0015] like Figure 1 and 2 As shown, a device for detecting empty glue in a dispensing system is provided with an error-proofing device, comprising a screw dispensing device 1, the screw dispensing device 1 being connected to a glue storage device 3 via a glue injection pipeline 2, the glue injection pipeline 2 being provided with two error-proofing devices, namely a first error-proofing device 4 and a second error-proofing device 5, the glue injection pipeline 2 comprising a first pipeline 201 and a second pipeline 202, the glue storage device 3 comprising a first large glue barrel 301 and a second large glue barrel 302, the screw dispensing device 1 comprising a dual-liquid servo screw valve and a mixing needle 101, the dual-liquid servo screw valve comprising a valve body 102, a first glue inlet 103 and the second glue inlet 104, the first glue inlet 103 and the second glue inlet 104 are symmetrically distributed on both sides of the valve body 102; the first large glue barrel 301 and the small glue barrel 6 of the first error-proofing device 4 are filled with glue A, and the second large glue barrel 302 and the small glue barrel 6 of the second error-proofing device 5 are filled with glue B; the first large glue barrel 301 is connected with the first error-proofing device 4 and the first glue inlet 103 in sequence through the first pipeline 201, and the second large glue barrel 302 is connected with the second error-proofing device 5 and the second glue inlet 104 in sequence through the second pipeline 202.
[0016] Specifically, the first error proofing device 4 and the second error proofing device 5 each include a small glue barrel 6, a three-way joint 7, an air inlet pipe 8, a bracket 9 and an annular metal induction sensor 10. The small glue barrel 6 is connected to the screw dispensing device 1 through the bracket 9. Glue, a piston 11 and a metal ball 12 are sequentially arranged in the small glue barrel 6 from bottom to top. Preferably, the metal ball 12 is a steel ball with a diameter of 8 mm. The small glue barrel 6 is made of transparent plastic; the piston 11 can move up and down along the inner wall of the small glue barrel 6, and the annular metal induction sensor The sensor 10 is sleeved on the outside of the bottom of the small rubber barrel 6 and is connected to the buzzer alarm through an electrical signal. The three-way connector 7 includes a first inlet 701, a second inlet 702 and an outlet 703. The first inlet 701 is connected to the glue injection pipeline 2, the second inlet 702 is connected to the bottom of the small rubber barrel 6, and the outlet 703 is connected to the screw dispensing device 1. The pressure in the glue storage device 3 is P1, and the air inlet pipe 8 is connected to the top of the small rubber barrel 6, which is used to apply an air pressure P2 to the piston 11, and P2-P1=0.5MPa.
[0017] When the utility model is in use, the first error proofing device 4 monitors the glue A in the first large glue barrel 301, and the second error proofing device 5 monitors the glue B in the second large glue barrel 302. When any type of glue in the glue storage device 3 is used up and the annular metal induction sensor 10 senses the steel ball, it will trigger the buzzer for sound and light warning to remind the operator to replace the large glue barrel or replenish the corresponding glue. The advantages of the utility model are: it is not only applicable to the dispensing system using a single-liquid screw valve, but also to the dispensing system using a double-liquid screw valve, and has strong flexibility; the utility model has a simple structure, does not need to change the original structure of the dispensing system, and ensures the stability of the dispensing process of each product through a low manufacturing cost, thereby ensuring the stability of production and product quality.
[0018] The present utility model is not limited to the above-mentioned embodiments. On the basis of the technical solution disclosed in the present utility model, technicians in this field can make some substitutions and deformations to some technical features therein according to the disclosed technical content without creative labor, and these substitutions and deformations are all within the protection scope of the present utility model.
Claims
1. An error-proofing device for detecting empty glue in a dispensing system, comprising a screw dispensing device, wherein the screw dispensing device is connected to a glue storage device through a glue injection pipeline, and is characterized in that: At least one error-proofing device is arranged on the glue injection pipeline, and the error-proofing device includes a small glue barrel, a three-way joint, an air inlet pipe and an annular metal induction sensor. Glue, a piston and a small metal ball are arranged in the small glue barrel from bottom to top, and the piston can move up and down along the inner wall of the small glue barrel. The annular metal induction sensor is sleeved on the outer side of the bottom of the small glue barrel. The three-way joint includes a first inlet, a second inlet and an outlet. The first inlet is connected to the glue injection pipeline, the second inlet is connected to the bottom of the small glue barrel, and the outlet is connected to the screw dispensing device. The pressure in the glue storage device is P1, and the air inlet pipe is connected to the top of the small glue barrel, which is used to apply air pressure P2 to the piston and P2<P1.
2. The error-proofing device for detecting empty glue in a dispensing system according to claim 1 is characterized in that: The metal ball is a steel ball with a diameter of 8 mm.
3. The error-proofing device for detecting empty glue in a dispensing system according to claim 1 is characterized in that: The annular metal induction sensor is connected to the buzzer alarm through an electrical signal.
4. The error-proofing device for detecting empty glue in a dispensing system according to claim 1, characterized in that: The error-proofing device also includes a bracket, and the small glue barrel is connected to the screw glue dispensing device through the bracket.
5. The error-proofing device for detecting empty glue in a dispensing system according to claim 1, characterized in that: The glue injection pipeline is provided with two error proofing devices, which are a first error proofing device and a second error proofing device respectively. The glue injection pipeline includes a first pipeline and a second pipeline. The glue storage device includes a first large glue barrel and a second large glue barrel. The screw dispensing device includes a double-liquid servo screw valve and a mixing needle. The double-liquid servo screw valve includes a valve body, a first glue inlet and a second glue inlet. The first large glue barrel is connected with the first error proofing device and the first glue inlet in sequence through a first pipeline, and the second large glue barrel is connected with the second error proofing device and the second glue inlet in sequence through a second pipeline.
6. The error-proofing device for detecting empty glue in a dispensing system according to claim 5, characterized in that: The first glue inlet and the second glue inlet are symmetrically distributed on both sides of the valve body.
7. The error-proofing device for detecting empty glue in a dispensing system according to claim 5, characterized in that: The first large glue barrel and the small glue barrel of the first error-proofing device are both filled with glue A, and the second large glue barrel and the small glue barrel of the second error-proofing device are both filled with glue B.