Nozzle structure for injection mold

Abstract

The nozzle structure comprises a nozzle body and a spray head, a mounting groove is formed in one side of the interior of the nozzle body, a sliding rod is connected to the inner wall of the mounting groove in a sliding mode, and a reset spring is fixedly connected to one side of the outer surface of the sliding rod; and one end of the reset spring is fixedly connected with one side of the inner wall of the mounting groove, and one end of the sliding rod is fixedly connected with a sliding disc. Raw materials passing through an injection molding machine are extruded into the nozzle body, the raw materials push the sliding disc, the anti-leakage plug moves along with the sliding disc in the moving process, the raw materials are discharged out of the nozzle body, after injection molding is completed, the raw materials do not extrude the sliding disc, the anti-leakage plug is pulled back through the counter-acting force of the reset spring, and a discharging port of a spray head is blocked. According to the structural design, the discharge port of the nozzle can be automatically blocked after injection molding is completed, raw material waste caused by raw material leakage after injection molding is completed is avoided, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of injection mold nozzles, in particular to a nozzle structure for an injection mold. Background Art

[0002] The injection mold injects heated molten plastic into the mold cavity, and obtains the finished product after cooling and solidification. A nozzle is needed to inject the heated molten plastic into the mold cavity. One end of the nozzle is installed on the injection molding machine, and the raw materials in the injection molding machine are squeezed into the mold through the nozzle to make the finished product.

[0003] In the prior art, Chinese patent CN217476453U discloses a nozzle structure for an injection mold, comprising a first fixed cylinder, a second fixed cylinder being provided at the bottom of the first fixed cylinder, a first bolt fixing ring being provided on the outer lower end fixing sleeve of the first fixed cylinder, a second bolt fixing ring being provided on the upper outer end fixing sleeve of the second fixed cylinder, a hydraulic telescopic rod being provided on the top of the first fixed cylinder, an injection nozzle being inserted at the lower end of the inner cavity of the second fixed cylinder, and a limiting ring being fixedly connected to the side wall of the inner cavity upper end of the second fixed cylinder.

[0004] At present, the nozzle structure of most injection molds is such that after the injection molding is completed, part of the molten plastic in the nozzle leaks out from the inside of the nozzle mouth, causing the raw material to leak. The raw material leaked from the nozzle cannot be reused, which will cause the waste of raw materials, increase production costs, and thus be inconvenient to use. Utility Model Content

[0005] The purpose of the present utility model is to provide a nozzle structure for an injection mold to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a nozzle structure for an injection mold, comprising a nozzle body and a nozzle head, an installation groove being provided on one side of the interior of the nozzle body, a sliding rod being slidably connected to the inner wall of the installation groove, a return spring being fixedly connected to one side of the outer surface of the sliding rod, one end of the return spring being fixedly connected to one side of the inner wall of the installation groove, one end of the sliding rod being fixedly connected to a sliding disk, a sliding groove being provided on one side of the inner wall of the nozzle body, one side of the sliding groove being connected through the discharge pipe of the nozzle body, the sliding disk being located inside the sliding groove, a connecting rod being fixedly connected to the middle part of one side of the sliding disk, one end of the connecting rod being fixedly connected to an anti-leakage plug, a plurality of discharge grooves being provided on the outer surface of the anti-leakage plug, and the anti-leakage plug being located inside the nozzle head.

[0007] As a further preferred embodiment of the present technical solution, a fixing bracket is slidably connected to the outer surface of the connecting rod, and both ends of the fixing bracket are fixedly connected to both sides of the inner wall of the sliding groove.

[0008] As a further preferred embodiment of the present technical solution, a rubber plug is slidably engaged with the inner wall of the nozzle.

[0009] As a further preferred embodiment of the present technical solution, a hexagonal connecting ring is fixedly connected to one side of the outer surface of the nozzle body, and a threaded groove is provided on the other side of the outer surface of the nozzle body.

[0010] The utility model provides a nozzle structure for an injection mold, which has the following beneficial effects:

[0011] The utility model uses the raw material of the injection molding machine to extrude into the nozzle body, and the raw material pushes the sliding disk. During the movement of the sliding disk, the anti-leakage plug also moves, and the raw material is discharged from the nozzle body. When the injection molding is completed, the raw material stops squeezing the sliding disk, and the reaction force of the reset spring pulls the anti-leakage plug back to block the discharge port of the nozzle. This structural design can automatically block the discharge port of the nozzle after the injection molding is completed, thereby avoiding leakage of raw materials after the injection molding is completed, causing waste of raw materials, and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the cross-sectional structure of the nozzle body and the nozzle in the present invention;

[0014] Figure 3 This is a schematic diagram of the connection relationship between the nozzle body, the nozzle, the sliding disk and the anti-leakage plug in the utility model;

[0015] Figure 4 Schematic diagram of the connection relationship between the sliding plate, the sliding rod and the anti-leakage plug in the present invention;

[0016] In the figure: 1. Nozzle body; 2. Nozzle; 3. Hexagonal connecting ring; 4. Threaded groove; 5. Rubber plug; 6. Sliding plate; 7. Connecting rod; 8. Anti-leakage plug; 9. Fixed bracket; 10. Sliding groove; 11. Sliding rod; 12. Return spring; 13. Mounting groove; 14. Discharge chute. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0018] The utility model provides a technical solution: Figure 1 - Figure 4As shown, in this embodiment, a nozzle structure for an injection mold includes a nozzle body 1 and a nozzle head 2. A mounting groove 13 is provided on one side of the interior of the nozzle body 1. A sliding rod 11 is slidably connected to the inner wall of the mounting groove 13. A return spring 12 is fixedly connected to one side of the outer surface of the sliding rod 11. One end of the return spring 12 is fixedly connected to one side of the inner wall of the mounting groove 13. One end of the sliding rod 11 is fixedly connected to a sliding disk 6. A sliding groove 10 is provided on one side of the inner wall of the nozzle body 1. One side of the sliding groove 10 is connected to the discharge pipe of the nozzle body 1. The sliding disk 6 is located inside the sliding groove 10. A connecting rod is fixedly connected to the middle part of one side of the sliding disk 6. 7. One end of the connecting rod 7 is fixedly connected to an anti-leakage plug 8, and a plurality of discharge grooves 14 are provided on the outer surface of the anti-leakage plug 8. The anti-leakage plug 8 is located inside the nozzle 2, and the raw material of the injection molding machine is squeezed into the nozzle body 1. The raw material pushes the sliding disk 6. The sliding disk 6 moves during the movement of the anti-leakage plug 8, and the raw material is discharged from the nozzle body 1. When the injection molding is completed, the raw material does not squeeze the sliding disk 6, and the reaction force of the reset spring 12 pulls the anti-leakage plug 8 back to block the discharge port of the nozzle 2. This structural design can automatically block the discharge port of the nozzle 2 after the injection molding is completed, thereby avoiding leakage of raw materials after the injection molding is completed, causing waste of raw materials, and reducing production costs.

[0019] like Figure 2 - Figure 4 As shown, the outer surface of the connecting rod 7 is slidably connected to a fixing frame 9, and both ends of the fixing frame 9 are fixedly connected to the inner walls of the sliding groove 10. Through the structural design of the fixing frame 9, the connecting rod 7, the sliding disk 6 and the anti-leakage plug 8 can be supported and guided.

[0020] like Figure 1 As shown, a rubber plug 5 is slidably connected to the inner wall of the nozzle 2. The structural design of the rubber plug 5 can prevent the nozzle body 1 from being produced and dust from entering the nozzle body 1 from the nozzle 2, thereby affecting the injection molding effect of the nozzle body 1.

[0021] like Figure 1 and Figure 2 As shown, a hexagonal connecting ring 3 is fixedly connected to one side of the outer surface of the nozzle body 1, and a thread groove 4 is opened on the other side of the outer surface of the nozzle body 1. The structural design of the hexagonal connecting ring 3 and the thread groove 4 makes it convenient to install the nozzle body 1 on the injection molding machine.

[0022] The utility model provides a nozzle structure for an injection mold, and the specific working principle is as follows:

[0023] When installing the nozzle body 1 on the injection molding machine, first align the thread groove 4 with the thread of the injection molding machine, rotate the nozzle body 1, and the thread groove 4 moves with the thread in the injection molding machine. When it cannot be rotated, use a wrench to clamp the surface of the hexagonal connecting ring 3, rotate the wrench, and install the nozzle body 1 on the injection molding machine. After removing the rubber plug 5, when injecting into the mold, the raw material of the injection molding machine is squeezed into the nozzle body 1, and the raw material pushes the sliding disk 6. During the movement of the sliding disk 6, the anti-leakage plug 8 also moves to discharge the raw material from the nozzle body 1. When the injection is completed, the raw material does not squeeze the sliding disk 6. The reaction force of the reset spring 12 pulls the anti-leakage plug 8 back to block the discharge port of the nozzle head 2 to prevent the raw material from leaking.

[0024] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A nozzle structure for an injection mold, comprising a nozzle body (1) and a nozzle head (2), characterized in that: The nozzle body (1) has an installation groove (13) on one side of its interior, and a sliding rod (11) is slidably connected to the inner wall of the installation groove (13), and a return spring (12) is fixedly connected to the outer surface of the sliding rod (11), and one end of the return spring (12) is fixedly connected to the inner wall of the installation groove (13), and one end of the sliding rod (11) is fixedly connected to a sliding disk (6), and a sliding groove (10) is provided on one side of the inner wall of the nozzle body (1), and one side of the sliding groove (10) is connected to the discharge pipe of the nozzle body (1), and the sliding disk (6) is located inside the sliding groove (10), and a connecting rod (7) is fixedly connected to the middle part of one side of the sliding disk (6), and one end of the connecting rod (7) is fixedly connected to an anti-leakage plug (8), and a plurality of discharge grooves (14) are provided on the outer surface of the anti-leakage plug (8), and the anti-leakage plug (8) is located inside the nozzle head (2).

2. The nozzle structure for an injection mold according to claim 1, characterized in that: The outer surface of the connecting rod (7) is slidably connected to a fixing frame (9), and both ends of the fixing frame (9) are fixedly connected to both sides of the inner wall of the sliding groove (10).

3. The nozzle structure for an injection mold according to claim 1, characterized in that: A rubber plug (5) is slidably engaged with the inner wall of the nozzle (2).

4. The nozzle structure for an injection mold according to claim 1, characterized in that: A hexagonal connecting ring (3) is fixedly connected to one side of the outer surface of the nozzle body (1), and a thread groove (4) is provided on the other side of the outer surface of the nozzle body (1).

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