Sealing assembly of semi-automatic dispensing machine

Abstract

The utility model discloses a sealing assembly of a semi-automatic glue dispenser, which belongs to the technical field of glue dispensers and comprises a polyurethane sealing ring and a glue dispenser head for mounting the polyurethane sealing ring, one end of the glue dispenser head is provided with a mounting assembly, one side of the glue dispenser head is communicated with a glue dispensing nozzle, and the other side of the glue dispensing nozzle is provided with a sealing assembly. The polyurethane sealing ring is arranged at the end, away from the machine head of the dispensing machine, of the dispensing nozzle, a positioning shell is arranged on the side, away from the dispensing nozzle, of the polyurethane sealing ring, and a glue outlet hole matched with the dispensing nozzle is formed in the surface of the positioning shell. The positioning shell and the locking assembly are used in cooperation, the polyurethane sealing ring can be fixedly installed at one end of the dispensing nozzle, a traditional Teflon sealing ring is replaced with the polyurethane sealing ring, the situation that wire drawing and glue leakage exist in the dispensing nozzle in the moving process of an extruder head is reduced, and compared with the prior art, the positioning shell and the locking assembly are used in a matched mode. And the sealing effect is good, the glue leakage condition of the wire drawing is less, and other elements which do not need to be dispensed are not polluted.

Description

Technical Field

[0001] The utility model relates to the technical field of glue dispensing machines, in particular to a sealing component of a semi-automatic glue dispensing machine. Background Art

[0002] In industrial production, dispensing is needed in many places, such as integrated circuits, semiconductor packaging, printed circuit boards, color LCD screens, electronic components (such as relays, speakers), electronic components, automotive parts, etc.

[0003] A Chinese patent with a publication (announcement) number of CN211330056U discloses a semi-automatic glue dispensing machine, comprising a glue dispensing machine head, a glue dispensing nozzle fixedly connected to the bottom of the glue dispensing machine head, a glue delivery cavity provided in the middle position inside the glue dispensing machine head, a glue suction disk fixedly connected below the glue delivery cavity, a glue storage cavity provided inside the glue dispensing machine head, an air delivery channel connected to one side of the glue storage cavity, the air delivery channel being connected to the glue suction disk, an air outlet channel connected to the outside being connected to the upper end of the glue storage cavity, a vacuum pump being provided on the air outlet channel, an annular threaded groove provided on the bottom surface of the glue dispensing machine head, a fixing ring provided on the outer side of the glue dispensing nozzle, the upper end of the fixing ring being threadedly connected to the threaded groove, in the utility model, the semi-automatic glue dispensing machine can adjust the glue output according to actual needs, and can avoid the occurrence of glue dripping or wire drawing.

[0004] The semi-automatic dispensing machine involved in the above patent does not have a sealing structure on its dispensing nozzle, while the sealing structure on the dispensing nozzle of the existing semi-automatic dispensing machine is mostly a Teflon sealing ring. When the silicone rubber is fixed on the component during production, the semi-automatic dispensing valve is sealed by returning the cylinder after the dispensing is completed. The current dispensing valve assembly uses a Teflon sealing ring inside, and the sealing effect is not good. After the dispensing is completed, it moves to other positions and there is wire drawing and glue leakage in the dispensing path, which contaminates the components that do not need dispensing, resulting in customer complaints and batch rework. Therefore, we need to propose a sealing assembly for a semi-automatic dispensing machine. Utility Model Content

[0005] The purpose of the utility model is to provide a sealing component for a semi-automatic glue dispensing machine, which has the advantages of good sealing effect and less wire drawing and glue leakage during movement, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides a sealing component of a semi-automatic dispensing machine, including a polyurethane sealing ring and a dispensing machine head for installing the polyurethane sealing ring, one end of the dispensing machine head is provided with a mounting component, one side of the dispensing machine head is connected to a dispensing nozzle, the polyurethane sealing ring is arranged at the end of the dispensing nozzle away from the dispensing machine head, a positioning shell is arranged on the side of the polyurethane sealing ring away from the dispensing nozzle, a glue outlet hole matched with the dispensing nozzle is opened on the surface of the positioning shell, the polyurethane sealing ring is installed and fixed to one end of the dispensing nozzle through the positioning shell, the positioning shell is locked and fixed to one end of the dispensing nozzle through a locking assembly, and a rotating assembly is arranged in the inner cavity of the positioning shell and on one side of the polyurethane sealing ring.

[0007] Preferably, the locking assembly includes a threaded groove opened at one end of the dispensing nozzle, one end of the inner cavity of the positioning shell is provided with an internal thread adapted to the threaded groove, and the positioning shell is tightened and installed in the threaded groove at one end of the dispensing nozzle by the internal thread.

[0008] Preferably, the rotating assembly includes a rotating plate arranged in the inner cavity of the positioning shell, and a through hole adapted to the glue dispensing nozzle is opened on the surface of the rotating plate, and both ends of the through hole are respectively connected to the glue dispensing nozzle and the glue outlet hole, and one side of the rotating plate is movably mounted in the inner cavity of the positioning shell through a rotating connecting assembly.

[0009] Preferably, the rotating connection assembly includes an annular limiter fixedly mounted on one side of the rotating plate, a rotating groove is provided on one side of the inner cavity of the positioning shell and at a corresponding position of the annular limiter, and the surface of the annular limiter is rotatably connected to the inner wall of the rotating groove.

[0010] Preferably, a polyurethane liner block is fixedly installed in the inner cavity of the glue dispensing machine head, and a glue storage cavity is provided inside the polyurethane liner block, and a glue extrusion component for extruding glue is movably installed in the glue storage cavity.

[0011] Preferably, the glue extrusion assembly includes an extrusion piston slidably mounted in the inner cavity of the glue storage chamber, a connecting rod is fixedly mounted on one end of the extrusion piston, and the end of the connecting rod away from the extrusion piston passes through the glue storage chamber and extends to the outside of the glue storage chamber.

[0012] Preferably, a fixing hole is opened on one side of the glue dispensing machine head, one end of the glue dispensing nozzle is fixedly installed in the inner cavity of the fixing hole, and the glue storage cavity is connected to the glue dispensing nozzle.

[0013] Preferably, the mounting assembly includes a mounting seat fixedly mounted on the surface of the dispensing machine head, and a mounting hole is provided on the surface of the mounting seat.

[0014] Preferably, a glue supply hose is provided above the glue dispensing machine head, and the bottom end of the glue supply hose is connected to the surface of the glue dispensing machine head.

[0015] Preferably, a glue inlet hole is opened on the top of the polyurethane liner block, the bottom end of the glue inlet hole is connected to the top of the glue storage cavity, and the top end of the glue inlet hole is connected to the bottom end of the glue supply hose.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model discloses the polyurethane sealing ring can be installed and fixed on one end of the glue dispensing nozzle through the coordinated use of the positioning shell and the locking component, and the traditional Teflon sealing ring is replaced by the polyurethane sealing ring, thereby reducing the phenomenon of wire drawing and glue leakage at the glue dispensing nozzle when the extruder head is moving. Compared with the prior art, the sealing effect is better, the wire drawing and glue leakage are less, and other components that do not need glue dispensing will not be polluted. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a schematic cross-sectional view of the head of the glue dispensing machine of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the glue extrusion component of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the locking assembly of the utility model;

[0022] Figure 5 It is a structural schematic diagram of the rotating assembly of the utility model.

[0023] In the figure: 1. polyurethane sealing ring; 2. dispensing machine head; 3. dispensing nozzle; 4. positioning shell; 5. glue outlet hole; 6. threaded groove; 7. internal thread; 8. rotating plate; 9. through hole; 10. annular limiter; 11. rotating groove; 12. polyurethane liner block; 13. glue storage cavity; 14. extrusion piston; 15. connecting rod; 16. fixing hole; 17. mounting seat; 18. mounting hole; 19. glue supply hose; 20. glue inlet hole. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-Figure 5The utility model provides a sealing component of a semi-automatic glue dispensing machine, including a polyurethane sealing ring 1 and a glue dispensing machine head 2 for installing the polyurethane sealing ring 1, a polyurethane liner block 12 is fixedly installed in the inner cavity of the glue dispensing machine head 2, a glue storage cavity 13 is provided inside the polyurethane liner block 12, a glue extrusion component for extruding glue is movably installed in the glue storage cavity 13, and the glue extrusion component includes an extrusion piston 14 slidably installed in the inner cavity of the glue storage cavity 13, a connecting rod 15 is fixedly installed at one end of the extrusion piston 14, and the connecting rod 15 is away from the extrusion piston 14. One end passes through the glue storage cavity 13 and extends to the outside of the glue storage cavity 13. A fixing hole 16 is provided on one side of the glue dispensing machine head 2. One end of the glue dispensing nozzle 3 is fixedly installed in the inner cavity of the fixing hole 16. The glue storage cavity 13 is connected with the glue dispensing nozzle 3. A glue supply hose 19 is provided above the glue dispensing machine head 2. The bottom end of the glue supply hose 19 is connected with the surface of the glue dispensing machine head 2. A glue inlet hole 20 is provided on the top of the polyurethane liner block 12. The bottom end of the glue inlet hole 20 is connected with the top of the glue storage cavity 13, and the top end of the glue inlet hole 20 is connected with the bottom end of the glue supply hose 19.

[0026] Through the setting of the glue squeezing component, when dispensing glue, the user can inject glue into the glue storage chamber 13 through the glue supply hose 19, and then drive the connecting rod 15 and the extrusion piston 14 to move through the cylinder or other driving structure. The movement of the extrusion piston 14 will squeeze the glue in the glue storage chamber 13 and squeeze it out through the glue dispensing nozzle 3.

[0027] Preferably, a mounting assembly is provided at one end of the glue dispensing machine head 2, and the mounting assembly includes a mounting seat 17 fixedly mounted on the surface of the glue dispensing machine head 2, and a mounting hole 18 is opened on the surface of the mounting seat 17. Through the setting of the mounting assembly, the glue dispensing machine head 2 and the glue dispensing machine can be installed and connected together. During installation, the user can tighten and fix the mounting seat 17 to the body of the glue dispensing machine through the mounting hole 18 by a fastening structure such as bolts, thereby installing and fixing the use position of the device.

[0028] Among them, one side of the dispensing machine head 2 is connected to the dispensing nozzle 3, the polyurethane sealing ring 1 is arranged at the end of the dispensing nozzle 3 away from the dispensing machine head 2, and a positioning shell 4 is arranged on the side of the polyurethane sealing ring 1 away from the dispensing nozzle 3. The surface of the positioning shell 4 is provided with a glue outlet hole 5 compatible with the dispensing nozzle 3. The polyurethane sealing ring 1 is installed and fixed to one end of the dispensing nozzle 3 through the positioning shell 4. The positioning shell 4 is locked and fixed to one end of the dispensing nozzle 3 through a locking assembly. The locking assembly includes a threaded groove 6 opened at one end of the dispensing nozzle 3, and one end of the inner cavity of the positioning shell 4 is provided with an internal thread 7 compatible with the threaded groove 6. The positioning shell 4 is tightened and installed in the threaded groove 6 at one end of the dispensing nozzle 3 through the internal thread 7.

[0029] In this embodiment, one end of the glue dispensing nozzle 3 is sealed by a polyurethane sealing ring 1. In the prior art, a Teflon sealing ring is often used to seal the glue dispensing nozzle 3. In this embodiment, the polyurethane sealing ring 1 is used to replace the Teflon sealing ring, so that the glue dispensing nozzle 3 can avoid the situation of wire drawing and glue leakage when not dispensing glue. When installing the polyurethane sealing ring 1, the user can fit the polyurethane sealing ring 1 to one end of the glue dispensing nozzle 3, and then put the positioning shell 4 on its surface and twist the positioning shell 4. Under the cooperation of the internal thread 7 and the thread groove 6, the positioning shell 4 can be tightened and fixed to one end of the glue dispensing nozzle 3, so that the use position of the polyurethane sealing ring 1 is installed and fixed.

[0030] It is worth mentioning that a rotating assembly is provided in the inner cavity of the positioning shell 4 and on one side of the polyurethane sealing ring 1. The rotating assembly includes a rotating plate 8 provided in the inner cavity of the positioning shell 4. A through hole 9 adapted to the glue dispensing nozzle 3 is provided on the surface of the rotating plate 8. The two ends of the through hole 9 are respectively connected to the glue dispensing nozzle 3 and the glue outlet hole 5. One side of the rotating plate 8 is movably installed in the inner cavity of the positioning shell 4 through a rotating connection assembly. The rotating connection assembly includes an annular limiter 10 fixedly installed on one side of the rotating plate 8. A rotating groove 11 is provided on one side of the inner cavity of the positioning shell 4 and at a position corresponding to the annular limiter 10. The surface of the annular limiter 10 is rotatably connected to the inner wall of the rotating groove 11.

[0031] By setting the rotating component, when tightening the positioning shell 4, as the positioning shell 4 is continuously turned, its inner wall will gradually fit tightly with the polyurethane sealing ring 1, so that when the positioning shell 4 is rotated, the polyurethane sealing ring 1 will be driven to rotate, which is easy to cause wear thereon. By setting the rotating plate 8, when the positioning shell 4 is rotated, the rotating plate 8 will fit with the polyurethane sealing ring 1, so that when the positioning shell 4 is rotated, the rotating plate 8 and the polyurethane sealing ring 1 will not rotate, but the annular limit member 10 will rotate in the inner cavity of the rotating groove 11.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sealing assembly for a semi-automatic glue dispensing machine, comprising a polyurethane sealing ring (1) and a glue dispensing machine head (2) for mounting the polyurethane sealing ring (1), wherein one end of the glue dispensing machine head (2) is provided with a mounting assembly, characterized in that: One side of the glue dispensing machine head (2) is connected to the glue dispensing nozzle (3); the polyurethane sealing ring (1) is arranged at one end of the glue dispensing nozzle (3) away from the glue dispensing machine head (2); a positioning shell (4) is arranged on the side of the polyurethane sealing ring (1) away from the glue dispensing nozzle (3); a glue outlet hole (5) adapted to the glue dispensing nozzle (3) is provided on the surface of the positioning shell (4); the polyurethane sealing ring (1) is fixed to one end of the glue dispensing nozzle (3) through the positioning shell (4); the positioning shell (4) is fixed to one end of the glue dispensing nozzle (3) through a locking assembly; a rotating assembly is arranged in the inner cavity of the positioning shell (4) and on one side of the polyurethane sealing ring (1).

2. The sealing assembly of a semi-automatic glue dispensing machine according to claim 1, characterized in that: The locking assembly comprises a threaded groove (6) formed at one end of the glue dispensing nozzle (3); an internal thread (7) adapted to the threaded groove (6) is formed at one end of the inner cavity of the positioning shell (4); the positioning shell (4) is screwed and installed in the threaded groove (6) at one end of the glue dispensing nozzle (3) via the internal thread (7).

3. The sealing assembly of a semi-automatic glue dispensing machine according to claim 1, characterized in that: The rotating assembly comprises a rotating plate (8) arranged in the inner cavity of the positioning shell (4); a through hole (9) adapted to the glue dispensing nozzle (3) is provided on the surface of the rotating plate (8); two ends of the through hole (9) are respectively connected to the glue dispensing nozzle (3) and the glue outlet hole (5); one side of the rotating plate (8) is movably mounted in the inner cavity of the positioning shell (4) via a rotating connection assembly.

4. The sealing assembly of a semi-automatic glue dispensing machine according to claim 3, characterized in that: The rotating connection assembly comprises an annular stopper (10) fixedly mounted on one side of the rotating plate (8); a rotating groove (11) is provided on one side of the inner cavity of the positioning shell (4) and at a position corresponding to the annular stopper (10); and the surface of the annular stopper (10) is rotatably connected to the inner wall of the rotating groove (11).

5. The sealing assembly of a semi-automatic glue dispensing machine according to claim 1, characterized in that: A polyurethane lining block (12) is fixedly installed in the inner cavity of the glue dispensing machine head (2), and a glue storage cavity (13) is provided inside the polyurethane lining block (12), and a glue extrusion component for extruding glue is movably installed in the glue storage cavity (13).

6. The sealing assembly of a semi-automatic glue dispensing machine according to claim 5, characterized in that: The glue extrusion assembly comprises an extrusion piston (14) slidably mounted in the inner cavity of the glue storage cavity (13); a connecting rod (15) is fixedly mounted on one end of the extrusion piston (14); and an end of the connecting rod (15) away from the extrusion piston (14) penetrates the glue storage cavity (13) and extends to the outside of the glue storage cavity (13).

7. The sealing assembly of a semi-automatic glue dispensing machine according to claim 5, characterized in that: A fixing hole (16) is provided on one side of the glue dispensing machine head (2); one end of the glue dispensing nozzle (3) is fixedly mounted in the inner cavity of the fixing hole (16); and the glue storage cavity (13) is in communication with the glue dispensing nozzle (3).

8. The sealing assembly of a semi-automatic glue dispensing machine according to claim 1, characterized in that: The mounting assembly comprises a mounting seat (17) fixedly mounted on the surface of the glue dispensing machine head (2), and a mounting hole (18) is provided on the surface of the mounting seat (17).

9. The sealing assembly of a semi-automatic glue dispensing machine according to claim 5, characterized in that: A glue supply hose (19) is arranged above the glue dispensing machine head (2), and the bottom end of the glue supply hose (19) is connected to the surface of the glue dispensing machine head (2).

10. The sealing assembly of a semi-automatic glue dispensing machine according to claim 9, characterized in that: A glue inlet hole (20) is provided at the top of the polyurethane liner block (12), the bottom end of the glue inlet hole (20) is connected to the top of the glue storage cavity (13), and the top end of the glue inlet hole (20) is connected to the bottom end of the glue supply tube (19).

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