Glue injection structure of plastic mold

Abstract

The utility model discloses a glue injection structure for a plastic mold, comprising a glue storage box, a material outlet at the lower end of the glue storage box is provided with a glue injection nozzle through a connecting seat, a retractable heat-insulating sleeve is provided on the outer side of the glue injection nozzle, a first heating layer is provided on the inner wall of the heat-insulating sleeve, a sealing end plate is provided on the lower end of the heat-insulating sleeve, and a first sealing ring is provided on the lower side of the sealing end plate, a spring is provided on the outer side of the glue injection nozzle between the sealing end plate and the connecting seat, a second heating layer is provided on the outer side of the glue storage box and the material outlet, and a heat-insulating layer is provided on the outer side of the second heating layer. The utility model provides a retractable heat-insulating sleeve on the outer side of the glue injection nozzle, and the first heating layer is provided on the inner wall of the heat-insulating sleeve, so that the outer side of the glue injection nozzle can be heated and insulated, so as to prevent the glue liquid from solidifying due to the glue injection nozzle not being used for a long time, and to avoid affecting the efficiency of intermittent glue injection.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic mold glue injection, in particular to a glue injection structure of a plastic mold. Background Art

[0002] Plastic mold is the abbreviation of a combined mold used for compression molding, extrusion molding, injection molding, blow molding and low foaming molding. Plastic products are generally made by injection molding. However, some products have complex internal structures and high surface requirements, which makes the front and back injection molding in the injection molding process affect the appearance and function of the product, making the entire mold opening difficult.

[0003] In the prior art, there is a glue injection structure for a plastic mold with application number 202023051971.9, which includes a main channel and several secondary channels connected to the main channel, wherein the main channel is relatively thick, and the inner diameter of the secondary channel gradually decreases from close to the main channel to away from the main channel, and the end of the secondary channel is provided with a glue injection port for flowing into the product. The glue injection structure of the plastic mold of the utility model can reduce the impact on the appearance of the product through the smaller glue injection port of the secondary channel. At the same time, when the mold is opened, the main channel and the secondary channel can be easily pulled away from the product, which can speed up the production speed. However, if the glue injection nozzle is not used for a long time, it is easy to cause the internal glue to solidify, and it takes a long time to clean it, which affects the efficiency of intermittent glue injection. Utility Model Content

[0004] The utility model aims to provide a glue injection structure for a plastic mold to solve the problem in the prior art that the glue injection nozzle is not used for a long time and the internal glue liquid is easily solidified, which takes a long time to clean, thereby affecting the intermittent glue injection efficiency.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a glue injection structure for a plastic mold, comprising a glue storage box, a material outlet at the lower end of the glue storage box is provided with a glue injection nozzle through a connecting seat, a retractable insulation sleeve is provided on the outer side of the glue injection nozzle, a first heating layer is provided on the inner wall of the insulation sleeve, and a sealing end plate is provided at the lower end of the insulation sleeve, and a first sealing ring is provided on the lower side of the sealing end plate, and a spring is provided on the outer side of the glue injection nozzle between the sealing end plate and the connecting seat.

[0006] Furthermore, a second heating layer is provided on the outside of the glue storage box and the discharge port, and a heat preservation layer is provided on the outside of the second heating layer.

[0007] Furthermore, a mounting frame is provided on the outer side of the upper portion of the glue storage box, and a hydraulic cylinder is provided on the middle portion of the upper side of the mounting frame.

[0008] Furthermore, a booster pump is provided on one side of the upper end of the glue storage box through a booster pipe, and a first valve is provided on the booster pipe.

[0009] Furthermore, the thermal insulation sleeve is made of a corrugated rubber sleeve, and the first heating layer inside the thermal insulation sleeve is made of an electric heating wire, and one end of the first heating layer is electrically connected to a temperature controller.

[0010] Furthermore, a through hole is provided on the inner wall of the sealing end plate, and the through hole slides through the outer wall of the glue injection nozzle, and a second sealing ring is provided on the inner side of the through hole.

[0011] Furthermore, a feed port is provided at the upper end of the glue storage box, and a second valve is provided at the discharge port at the lower end of the glue storage box.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model is provided with a retractable heat-insulating sleeve on the outer side of the glue injection nozzle, and a first heating layer is provided on the inner wall of the heat-insulating sleeve. The first heating layer adopts an electric heating wire, and one end of the first heating layer is electrically connected to a temperature controller, so that the outer side of the glue injection nozzle can be heated and insulated to prevent the glue liquid from solidifying due to the glue injection nozzle not being used for a long time, thereby avoiding affecting the efficiency of intermittent glue injection.

[0014] 2. The utility model adopts a corrugated rubber sleeve through the insulation sleeve, and a spring is provided on the outer sleeve of the glue injection nozzle between the sealing end plate and the connecting seat, so that the insulation sleeve has excellent elasticity and can meet the needs of glue injection nozzles of different depths for insertion and injection. In addition, a first sealing ring is provided on the lower side of the sealing end plate. At the same time, the spring can elastically press the sealing end plate and the first sealing ring to the outside of the glue injection port for sealing, thereby preventing the glue liquid from overflowing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 This is the overall structural front view of the utility model;

[0017] Figure 2 This is a top view of the glue storage box structure of the utility model;

[0018] Figure 3 The utility model is a schematic diagram of the connection structure of the thermal insulation sleeve and the glue injection nozzle.

[0019] In the figure: 1. glue storage box; 2. feed port; 3. connecting seat; 4. glue injection nozzle; 5. second heating layer; 6. insulation layer; 7. insulation sleeve; 8. first heating layer; 9. spring; 10. sealing end plate; 11. first sealing ring; 12. booster pump; 13. booster pipe; 14. first valve; 15. mounting frame; 16. hydraulic cylinder; 17. discharge port; 18. second valve; 19. through hole. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figure 1 , Figure 2 , Figure 3 In the embodiment of the utility model, a glue injection structure of a plastic mold includes a glue storage box 1, a feed port 2 is provided at the upper end of the glue storage box 1, and a second valve 18 is provided on the discharge port 17 at the lower end of the glue storage box 1, which is convenient for controlling the glue liquid to enter and exit the glue storage box 1, and the discharge port 17 at the lower end of the glue storage box 1 is provided with a glue injection nozzle 4 through a connecting seat 3, and a retractable insulation sleeve 7 is provided on the outer side of the glue injection nozzle 4, and a first heating layer 8 is provided on the inner wall of the insulation sleeve 7. The first heating layer 8 on the inner side of the insulation sleeve 7 adopts an electric heating wire, and one end of the first heating layer 8 is electrically connected to a temperature controller, so that the outer side of the glue injection nozzle 4 can be heated and insulated to prevent the glue liquid from solidifying due to the long-term non-use of the glue injection nozzle 4, and avoid affecting the efficiency of intermittent glue injection, and the insulation sleeve 7 adopts a corrugated rubber sleeve, so that the insulation sleeve has excellent elasticity, which can meet the insertion and injection use of glue injection nozzles of different depths.

[0022] like Figure 1 , Figure 3 As shown, a sealing end plate 10 is provided at the lower end of the insulation sleeve 7, and a first sealing ring 11 is provided on the lower side of the sealing end plate 10, a spring 9 is provided on the outer side of the glue injection nozzle 4 between the sealing end plate 10 and the connecting seat 3, a through hole 19 is provided on the inner wall of the sealing end plate 10, and the through hole 19 slides through the outer wall of the glue injection nozzle 4, a second sealing ring is provided on the inner side of the through hole 19, and at the same time, the spring 9 can be used to elastically press the sealing end plate 10 and the sealing ring to the outside of the glue injection port for sealing, so as to prevent the glue from overflowing.

[0023] like Figure 1 , Figure 2 As shown, a second heating layer 5 is provided on the outside of the glue storage box 1 and the discharge port 17, and an insulation layer 6 is provided on the outside of the second heating layer 5, so that the outside of the glue storage box 1 can be insulated to prevent the glue stored in the glue storage box 1 from solidifying. A mounting frame 15 is provided on the outside of the upper part of the glue storage box 1, and a hydraulic cylinder 16 is provided in the middle of the upper side of the mounting frame 15, so that the glue storage box 1 can be installed and fixed, and the glue storage box 1 can be adjusted up and down. A booster pump 12 is provided on one side of the upper end of the glue storage box 1 through a booster pipe 13, and a first valve 14 is provided on the booster pipe 13, so that the inside of the glue storage box 1 can be pressurized, so as to improve the smoothness of the glue injection of the glue liquid inside the glue storage box 1.

[0024] The working principle and use process of the utility model are as follows: when in use, a retractable insulation sleeve 7 is provided on the outer side of the glue injection nozzle 4, and a first heating layer 8 is provided on the inner wall of the insulation sleeve 7, so that the outer side of the glue injection nozzle 4 can be heated and insulated to prevent the glue liquid from solidifying due to long-term non-use of the glue injection nozzle 4, thereby avoiding affecting the efficiency of intermittent glue injection; and a first sealing ring 11 is provided on the lower side of the sealing end plate 10, and at the same time, the sealing end plate 10 and the first sealing ring 11 can be elastically pressed to the outside of the glue injection port for sealing in cooperation with the spring 9, so as to prevent the glue liquid from overflowing.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A glue injection structure for a plastic mold, comprising a glue storage box (1), characterized in that: The discharge port (17) at the lower end of the glue storage box (1) is provided with a glue injection nozzle (4) through a connecting seat (3); a retractable heat-insulating sleeve (7) is sleeved on the outer side of the glue injection nozzle (4); a first heating layer (8) is provided on the inner wall of the heat-insulating sleeve (7); a sealing end plate (10) is provided at the lower end of the heat-insulating sleeve (7); a first sealing ring (11) is provided on the lower side of the sealing end plate (10); and a spring (9) is sleeved on the outer side of the glue injection nozzle (4) between the sealing end plate (10) and the connecting seat (3).

2. The glue injection structure of a plastic mold according to claim 1, characterized in that: A second heating layer (5) is provided outside the glue storage box (1) and the discharge port (17), and a heat preservation layer (6) is provided outside the second heating layer (5).

3. The glue injection structure of a plastic mold according to claim 2, characterized in that: A mounting frame (15) is provided on the outer side of the upper part of the glue storage box (1), and a hydraulic cylinder (16) is provided in the middle part of the upper side of the mounting frame (15).

4. The plastic injection structure of a plastic mold according to claim 1, characterized in that: A booster pump (12) is provided on one side of the upper end of the glue storage box (1) via a booster pipe (13), and a first valve (14) is provided on the booster pipe (13).

5. The glue injection structure of a plastic mold according to claim 1, characterized in that: The heat-insulating sleeve (7) is a corrugated rubber sleeve, and the first heating layer (8) inside the heat-insulating sleeve (7) is a heating wire, and one end of the first heating layer (8) is electrically connected to a temperature controller.

6. The glue injection structure of a plastic mold according to claim 1, characterized in that: The inner wall of the sealing end plate (10) is provided with a through hole (19), and the through hole (19) is slidably penetrated through the outer wall of the glue injection nozzle (4), and a second sealing ring is provided inside the through hole (19).

7. The plastic injection structure of a plastic mold according to claim 1, characterized in that: The upper end of the glue storage box (1) is provided with a feed inlet (2), and the lower end of the glue storage box (1) is provided with a second valve (18).

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