Needle cylinder type constant-pressure glue supply device

Abstract

The utility model relates to the technical field of supply devices, in particular to a needle cylinder type constant-pressure glue supply device which can be used for adding glue without shutdown, does not influence the glue injection position and ensures the processing precision. Comprising a needle cylinder, a glue outlet needle nozzle, a sealing assembly, a shunting part, a pushing assembly and a feeding part, the glue outlet needle nozzle is installed at the lower end of the needle cylinder, the sealing assembly is installed at the top of the needle cylinder, the shunting part is installed on the sealing assembly, the pushing assembly is installed above the sealing assembly, and the feeding part is installed on the pushing assembly.

Description

Technical Field

[0001] This utility model relates to the technical field of supply devices, and in particular to a syringe-type constant pressure glue supply device. Background Technology

[0002] Syringe-based glue dispensing is widely used in many industries, such as applying red glue in SMT processing, glue injection in footwear production, and adhesive coating in the electronics industry. The principle of syringe-based glue dispensing is that an air source is connected to the top cap, and a certain volume of adhesive is contained in the syringe. By controlling the pressure and application time connected to the top cap, the amount of adhesive dispensed from the syringe can be controlled. Existing technology announcement CN214354848U proposes a glue metering device, including a support plate, an extrusion mechanism, and a conversion mechanism; the support plate has a storage cylinder on its bottom surface, with a discharge port at the bottom of the storage cylinder... The device is equipped with an injection head, a support frame on the upper surface of a support plate, an electric push rod on the inner top wall of the support frame, a distance sensor on the inner top wall of the support frame, and a mounting plate symmetrically mounted on the bottom surface of the support plate. The mounting plate has evenly spaced mounting screw holes on its bottom. A feed pipe is located at the left inlet on the upper left side of the outer arc surface of the storage cylinder. The left end of the feed pipe passes through a circular hole on the upper left side of the mounting plate and extends to the left side of the mounting plate. An vent pipe is located at the right outlet on the upper right side of the outer arc surface of the storage cylinder. The right end of the vent pipe passes through a through hole on the upper right side of the mounting plate and extends to the right side of the mounting plate. However, adding adhesive during use is a tricky problem. It must be done when the machine is stopped, and air bubbles are easily generated in the adhesive, affecting the operation. Touching the syringe, end cap, or dispensing nozzle can affect the dispensing position in precision dispensing applications, requiring reconfirmation of the dispensing trajectory, causing considerable inconvenience. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a syringe-type constant pressure glue supply device that can add glue without stopping the machine, without affecting the glue injection position, and ensures processing accuracy.

[0004] This utility model discloses a syringe-type constant pressure glue supply device, comprising a syringe, a glue dispensing nozzle, a sealing assembly, a flow divider, a pusher assembly, and a feeding assembly. The glue dispensing nozzle is installed at the lower end of the syringe, and the sealing assembly is installed at the top of the syringe. The flow divider is installed on the sealing assembly, and the pusher assembly is installed above the sealing assembly. The feeding assembly is installed on the pusher assembly. After installation, the feeding assembly is connected to the glue supply line. The pusher assembly and the flow divider cooperate to make the glue dispensing nozzle dispense glue at constant pressure and in a quantitative manner. It can add glue without stopping the machine, without affecting the glue dispensing position, and ensures processing accuracy. The sealing assembly can open the top of the syringe for easy cleaning of the inside of the syringe.

[0005] Preferably, the sealing assembly includes a connecting ring, a cap, and multiple connecting seats. The upper outer wall of the syringe is threaded, the cap is threaded to the syringe, and a connecting ring is installed on the cap and the outer wall of the syringe. The two connecting rings are connected and fixed by multiple connecting seats. The cap is screwed onto the upper part of the syringe for a sealing connection. At the same time, the multiple connecting seats can ensure the connection strength between the cap and the syringe. After the cap is removed from the top of the syringe, it is convenient to clean the inside of the syringe.

[0006] Preferably, the feeding assembly includes two connecting seats, two pushing cylinders, two electric telescopic rods, and two pushing pistons. The connecting seats are installed at the left and right ends of the top of the cylinder cover, and the bottom of the connecting seats has a feeding hole that communicates with the inside of the syringe. The pushing cylinders are installed on the upper end of the connecting seats, and the electric telescopic rods are installed on the top of the pushing cylinders. The telescopic end of the electric telescopic rod passes through the top of the pushing cylinder and is fitted with a pushing piston. Activating the pushing cylinders pushes the pushing pistons to move inside the pushing cylinders, which can push the adhesive material into the syringe. The two pushing cylinders work alternately to maintain constant pressure inside the syringe.

[0007] Preferably, the feeding component includes two one-way valves and two connectors. The input end of the connector is equipped with a one-way valve and a connector. The connector is connected to the glue supply line. When the push cylinder drives the push piston to move upward, it can draw glue into the push cylinder. The one-way valve can prevent glue backflow, and glue can be added without stopping the machine. It will not affect the glue injection position and ensure processing accuracy.

[0008] Preferably, the diversion component includes a servo motor, a rotating plate, and two diversion plates. The servo motor is installed at the center of the top of the cylinder cover. The output end of the servo motor passes through the cylinder cover and is mounted on the rotating plate. Diversion plates are installed on the left and right sides of the rotating plate, and the diversion plates have connecting holes. When the servo motor is started, it drives the rotating plate to rotate, and the rotating plate drives the diversion plates to rotate, so that the connecting holes are connected to the feed holes of the two connecting seats respectively. In conjunction with the alternating work of the push cylinder, the pressure inside the syringe is kept constant.

[0009] Preferably, it also includes a turntable, a limiting ring, and a connecting ring. The cylinder cover has a rotating cavity inside, and the turntable is rotatably installed in the rotating cavity. The turntable is coaxially connected to the output shaft of the servo motor. A limiting groove is opened at the bottom of the cylinder cover, and the limiting ring is rotatably installed in the limiting groove. The connecting ring is installed on the outer ring of the distributor plate, and the bottom of the limiting ring is connected to the top of the connecting ring. The turntable can drive the turntable to rotate in the rotating cavity when the servo motor drives the turntable to rotate, reducing the wear on the servo motor. At the same time, when the distributor plate rotates, the connecting ring drives the limiting ring to rotate in the limiting groove, ensuring the stability during rotation.

[0010] Preferably, it also includes two scraper rings, which are respectively installed on the outer walls of the two push pistons; when the push pistons move, the push scraper rings contact the inner wall of the push cylinder and scrape the inner wall of the push cylinder to avoid adhesive residue and reduce material waste.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: After installation, the feeding component is connected to the glue supply pipeline, and the glue dispensing nozzle is made to dispense glue at constant pressure and in a quantitative manner through the cooperation of the pushing component and the diversion component. It is possible to add glue without stopping the machine, without affecting the glue dispensing position, and ensuring processing accuracy. The sealing component can open the top of the syringe, which is convenient for cleaning the inside of the syringe. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the isometric structure of this utility model;

[0014] Figure 3 This is a front view structural diagram of the present invention;

[0015] Figure 4 This is a cross-sectional structural schematic diagram of the present invention;

[0016] Figure 5 This is a schematic diagram of the lower cross-sectional structure of this utility model;

[0017] The following are labels in the attached diagram: 1. Syringe; 2. Dispensing nozzle; 3. Connecting ring; 4. Cap; 5. Connecting seat; 6. Push cylinder; 7. One-way valve; 8. Connector; 9. Electric telescopic rod; 10. Push piston; 11. Scraper ring; 12. Servo motor; 13. Rotating plate; 14. Diverter plate; 15. Turntable; 16. Limiting rotating ring; 17. Connecting ring. Detailed Implementation

[0018] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.

[0019] like Figures 1 to 5As shown, a dispensing nozzle 2 is installed at the lower end of the syringe 1. The upper outer wall of the syringe 1 is threaded. The cap 4 is threaded to the syringe 1. Connecting rings 3 are installed on the cap 4 and the outer wall of the syringe 1. Two connecting rings 3 are connected and fixed together by multiple connecting seats 5. The connecting seats 5 are installed at the left and right ends of the top of the cap 4. A feed hole communicating with the inside of the syringe 1 is opened at the bottom of the connecting seat 5. A push cylinder 6 is installed on the upper end of the connecting seat 5. An electric telescopic rod 9 is installed on the top of the push cylinder 6. The telescopic end of the electric telescopic rod 9 passes through the top of the push cylinder 6 and is fitted with a push piston 10. A one-way valve 7 is installed at the input end of the connecting seat 5, and a connector 8 is also installed. Motor 12 is installed at the top center of cylinder cover 4. The output end of servo motor 12 passes through cylinder cover 4 and is installed with rotating plate 13. Diverter plates 14 are installed on the left and right sides of rotating plate 13. Diverter plates 14 are provided with connecting holes. Rotating cavity is provided inside cylinder cover 4. Turntable 15 is rotatably installed in rotating cavity. Turntable 15 is coaxially connected with the output shaft of servo motor 12. Limiting groove is provided at the bottom of cylinder cover 4. Limiting ring 16 is rotatably installed in limiting groove. Connecting ring 17 is installed on the outer ring of diverter plate 14. The bottom of limiting ring 16 is connected to the top of connecting ring 17. Two scraper rings 11 are respectively installed on the outer wall of two push pistons 10.

[0020] The cap 4 is screwed onto the upper part of the syringe 1 for a sealed connection. Multiple connecting seats 5 ensure the connection strength between the cap 4 and the syringe 1. Removing the cap 4 from the top of the syringe 1 facilitates cleaning of the inside of the syringe 1. Activating the push cylinder 6 moves the push piston 10 within the push cylinder 6, pushing the adhesive into the syringe 1. The two push cylinders 6 work alternately to maintain constant pressure inside the syringe 1. Connecting the connector 8 to the adhesive supply line allows adhesive to be drawn into the push cylinder 6 as the push cylinder 6 moves the push piston 10 upwards. The one-way valve 7 prevents adhesive backflow, allowing for adhesive addition without stopping the machine and without affecting the dispensing position, ensuring consistent dispensing. To improve work precision, the servo motor 12 is started to drive the rotating plate 13 to rotate, and the rotating plate 13 drives the flow divider plate 14 to rotate, so that the connecting hole is connected to the feed holes of the two connecting seats 5 respectively. With the alternating work of the push cylinder 6, the turntable 15 can rotate in the rotating cavity when the servo motor 12 drives the rotating plate 13 to rotate, reducing the wear on the servo motor 12. At the same time, when the flow divider plate 14 rotates, the connecting ring 17 drives the limiting rotating ring 16 to rotate in the limiting rotating groove, ensuring the stability during rotation. When the push piston 10 moves, it pushes the scraper ring 11 to contact the inner wall of the push cylinder 6, scraping the inner wall of the push cylinder 6 to avoid the residue of the adhesive and reduce material waste.

[0021] like Figures 1 to 5As shown, this utility model discloses a syringe-type constant pressure glue supply device. During operation, after installation, the connector 8 is connected to the glue supply line. The push cylinder 6 is activated, pushing the push piston 10 to move within the push cylinder 6. As the push cylinder 6 drives the push piston 10 upwards, glue is drawn into the push cylinder 6. The one-way valve 7 prevents glue backflow, allowing glue to be added without stopping the machine. The servo motor 12 is activated, driving the rotating plate 13 to rotate. The rotating plate 13 drives the diverter plate 14 to rotate, connecting the connecting hole to the feed holes of the two connecting seats 5. Combined with the alternating operation of the push cylinder 6, constant pressure is maintained inside the syringe 1. When the push piston 10 moves, it pushes the scraper ring 11 to contact the inner wall of the push cylinder 6, scraping the inner wall to prevent glue residue. After removing the cap 4 from the top of the syringe 1, the inside of the syringe 1 can be easily cleaned.

[0022] The one-way valve 7 and servo motor 12 of the syringe-type constant pressure glue supply device of this utility model are commercially available. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0023] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A syringe-type constant pressure adhesive supply device, characterized in that, It includes a syringe (1), a dispensing nozzle (2), a sealing assembly, a diversion component, a feeding assembly, and a feeding component. The dispensing nozzle (2) is installed at the lower end of the syringe (1), the sealing assembly is installed at the top of the syringe (1), the diversion component is installed on the sealing assembly, the feeding assembly is installed above the sealing assembly, and the feeding component is installed on the feeding assembly.

2. The syringe-type constant pressure glue supply device as described in claim 1, characterized in that, The sealing assembly includes a connecting ring (3), a cap (4) and multiple connecting seats (5). The upper outer wall of the syringe (1) is threaded. The cap (4) is threaded to the syringe (1). The cap (4) and the outer wall of the syringe (1) are fitted with connecting rings (3). The two connecting rings (3) are connected and fixed by multiple connecting seats (5).

3. The syringe-type constant pressure glue supply device as described in claim 2, characterized in that, The feeding assembly includes two connecting seats (5), two pushing cylinders (6), two electric telescopic rods (9) and two pushing pistons (10). The connecting seats (5) are installed on the left and right ends of the top of the cylinder cover (4). The bottom of the connecting seats (5) is provided with a feeding hole that communicates with the inside of the syringe (1). The pushing cylinders (6) are installed on the upper end of the connecting seats (5). The electric telescopic rods (9) are installed on the top of the pushing cylinders (6). The telescopic end of the electric telescopic rods (9) passes through the top of the pushing cylinders (6) and is equipped with a pushing piston (10).

4. The syringe-type constant pressure glue supply device as described in claim 3, characterized in that, The feeding component includes two check valves (7) and two connectors (8). The input end of the connector (5) is equipped with a check valve (7) and a connector (8).

5. The syringe-type constant pressure glue supply device as described in claim 2, characterized in that, The diversion component includes a servo motor (12), a rotating plate (13), and two diversion plates (14). The servo motor (12) is installed at the top center of the cylinder cover (4). The output end of the servo motor (12) passes through the cylinder cover (4) and is mounted on the rotating plate (13). Diversion plates (14) are installed on the left and right sides of the rotating plate (13). The diversion plates (14) have connecting holes.

6. The syringe-type constant pressure glue supply device as described in claim 5, characterized in that, It also includes a turntable (15), a limiting ring (16) and a connecting ring (17). The cylinder cover (4) has a rotating cavity inside, and the turntable (15) is rotatably installed in the rotating cavity. The turntable (15) is coaxially connected to the output shaft of the servo motor (12). The bottom of the cylinder cover (4) has a limiting groove, and the limiting ring (16) is rotatably installed in the limiting groove. The connecting ring (17) is installed on the outer ring of the diverter plate (14), and the bottom of the limiting ring (16) is connected to the top of the connecting ring (17).

7. The syringe-type constant pressure glue supply device as described in claim 3, characterized in that, It also includes two scraper rings (11), which are respectively installed on the outer walls of the two push pistons (10).

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