Anti-leakage injection mold

Abstract

The utility model relates to the technical field of injection molds, and discloses an anti-leakage injection mold which comprises a lower mold, an upper mold is arranged at the upper end of the lower mold, two semicircular grooves are formed in the edge of the lower mold, a fixing ring is arranged at the junction of the semicircular grooves, and an arc-shaped rod is arranged in the middle of the fixing ring in a penetrating mode. Plugging rubber rings are welded to the two sides of the arc-shaped rod correspondingly. According to the technical scheme, the pressing ring can extrude the blocking rubber ring on the inner side of the arc-shaped rod, the blocking rubber ring on the inner side drives the arc-shaped rod to move in the semicircular ring groove, meanwhile, the reset spring at one end of the arc-shaped rod is extruded, and the reset spring at the other end of the arc-shaped rod is stretched; the extrusion ring is clamped into the semi-circular-ring groove for first-time blocking and leakage prevention, and the blocking rubber ring on the outer side of the arc-shaped rod can be clamped into the annular groove of the upper mold in the moving process of the arc-shaped rod, so that the edges of the upper mold and the lower mold are blocked again for leakage prevention, and the injection molding production efficiency of the injection mold is further guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to a leakage-proof injection mold. Background Art

[0002] An injection mold is a tool for producing injection molded products. It consists of two parts: a movable mold and a fixed mold. During injection molding, the movable mold and the fixed mold are closed to form a pouring system and a cavity. When the mold is opened, the movable mold and the fixed mold are separated to take out the plastic product. When injection molding small products with complex structures, due to the complex structure and small shape, a larger injection pressure is required to fill the mold, and the high pressure puts higher requirements on the overall sealing of the mold.

[0003] When implementing this technical solution, there are at least the following defects: although the existing injection mold can be used for injection molding production, the injection material is very easy to leak out during the injection molding process, thereby affecting the molding effect of the injection material, and it is urgently needed to be improved. Therefore, we propose an anti-leakage injection mold. Utility Model Content

[0004] The utility model aims to provide a leakage-proof injection mold, which solves the problems raised in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a leakage-proof injection mold, comprising a lower mold, an upper mold is arranged at the upper end of the lower mold, two semicircular ring grooves are provided on the edge of the lower mold, a fixing ring is provided at the junction of the semicircular ring grooves, an arc rod is penetrated through the middle of the fixing ring, and sealing rubber rings are respectively welded on both sides of the arc rod, a pressing ring is fixedly installed at the lower end of the upper mold, an annular groove is provided on the edge of the upper mold, and the radius of the pressing ring is smaller than the radius of the annular groove.

[0006] By adopting the above technical scheme, the inner sealing rubber ring can drive the arc rod to move along the semicircular ring groove, and at the same time squeeze the return spring at one end of the arc rod, stretch the return spring at the other end of the arc rod, and squeeze the ring into the semicircular ring groove to perform the first sealing and leakage prevention. At the same time, during the movement of the arc rod, the sealing rubber ring on the outside of the arc rod will be stuck in the annular groove of the upper mold, thereby sealing the edges of the upper mold and the lower mold again to prevent leakage, further ensuring the injection molding production efficiency of the injection mold.

[0007] Optionally, a return spring is sleeved on the outer wall of the arc-shaped rod, and two ends of the return spring are fixedly connected to the sealing rubber ring and the fixing ring respectively.

[0008] By adopting the above technical solution, it is convenient to cooperate with the reset spring on the arc rod, so as to drive the blocking rubber rings at both ends of the arc rod to reset.

[0009] Optionally, the semicircular ring grooves are symmetrically arranged, and the two semicircular ring grooves have the same size.

[0010] By adopting the above technical solution, it is convenient to accommodate the sealing rubber ring through the provision of the semicircular ring groove.

[0011] Optionally, an injection tube is connected to the middle of the upper end of the upper mold, and a mold cavity is opened at the upper end of the lower mold.

[0012] By adopting the above technical solution, it is convenient to carry out injection molding production of injection molded products.

[0013] Optionally, the size of the sealing rubber ring is matched with the size of the annular groove, and the sealing rubber ring is movably connected to the annular groove.

[0014] By adopting the above technical solution, it is convenient to cooperate with the annular groove through the sealing rubber ring, thereby ensuring the anti-leakage effect of the injection mold.

[0015] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0016] The technical solution of the present application is to set up a lower mold, an upper mold, a semicircular ring groove, an arc rod, a return spring, a sealing rubber ring and annular groove, so that the pressing ring can squeeze the sealing rubber ring on the inner side of the arc rod, and the inner sealing rubber ring drives the arc rod to move along the semicircular ring groove, and at the same time squeezes the return spring at one end of the arc rod, stretches the return spring at the other end of the arc rod, and inserts the extrusion ring into the semicircular ring groove to perform the initial sealing and leakage prevention. In addition, during the movement of the arc rod, the sealing rubber ring on the outer side of the arc rod can be inserted into the annular groove of the upper mold, so that the edges of the upper and lower molds are sealed again to prevent leakage, thereby further ensuring the injection molding production efficiency of the injection mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of a leakage-proof injection mold of the utility model;

[0019] Figure 2 It is a schematic diagram of the partially enlarged structure of position A of a leakage-proof injection mold of the utility model.

[0020] In the figure: 1. lower mold; 11. upper mold; 12. injection tube; 13. mold cavity; 2. semicircular ring groove; 21. fixing ring; 22. arc rod; 23. return spring; 24. sealing rubber ring; 3. pressing ring; 4. annular groove. DETAILED DESCRIPTION

[0021] See also Figure 1-2 The utility model provides a technical solution: an anti-leakage injection mold, comprising a lower mold 1, an upper mold 11 is arranged at the upper end of the lower mold 1, two semicircular ring grooves 2 are arranged on the edge of the lower mold 1, and a fixing ring 21 is arranged at the junction of the semicircular ring grooves 2, which is convenient for the setting of the fixing ring 21 to ensure the stability of the semicircular ring grooves 2, an arc rod 22 is arranged through the middle of the fixing ring 21, and sealing rubber rings 24 are respectively welded on both sides of the arc rod 22, which is convenient for playing the effect of sealing and preventing leakage on both sides, and the upper mold A pressing ring 3 is fixedly installed at the lower end of 11, an annular groove 4 is provided on the edge of the upper mold 11, the radius of the pressing ring 3 is smaller than the radius of the annular groove 4, an injection tube 12 is connected to the middle of the upper end of the upper mold 11, and a mold cavity 13 is provided at the upper end of the lower mold 1, which is convenient for injection molding production of injection molded products. The size of the sealing rubber ring 24 is compatible with the size of the annular groove 4, and the sealing rubber ring 24 is movably connected to the annular groove 4, which is convenient for the sealing rubber ring 24 to cooperate with the annular groove 4, thereby ensuring the anti-leakage effect of the injection mold.

[0022] A return spring 23 is sleeved on the outer wall of the arc rod 22, and the two ends of the return spring 23 are fixedly connected to the sealing rubber ring 24 and the fixing ring 21 respectively, so that the return spring 23 on the arc rod 22 can cooperate to drive the sealing rubber rings 24 at both ends of the arc rod 22 to reset.

[0023] The semicircular ring grooves 2 are symmetrically arranged, and the two semicircular ring grooves 2 have the same size, so that the sealing rubber ring 24 can be easily accommodated through the arrangement of the semicircular ring grooves 2 .

[0024] When in use, first control the upper mold 11 to move downward. During the downward movement of the upper mold 11, the pressing ring 3 on the upper mold 11 enters the semicircular annular groove 2. The pressing ring 3 will squeeze the sealing rubber ring 24 on the inner side of the arc rod 22. The inner sealing rubber ring 24 drives the arc rod 22 to move along the semicircular annular groove 2, and at the same time squeezes the return spring 23 at one end of the arc rod 22, stretches the return spring 23 at the other end of the arc rod 22, and inserts the extrusion ring into the semicircular annular groove 2 for the first sealing and leakage prevention. At the same time, during the movement of the arc rod 22, the sealing rubber ring 24 on the outer side of the arc rod 22 will be inserted into the annular groove 4 of the upper mold 11, thereby sealing the edges of the upper mold 11 and the lower mold 1 again to prevent leakage, further ensuring the injection molding production efficiency of the injection mold.

Claims

1. A leakage-proof injection mold, comprising a lower mold (1), characterized in that: An upper mold (11) is arranged at the upper end of the lower mold (1), and two semicircular annular grooves (2) are provided on the edge of the lower mold (1), and a fixing ring (21) is arranged at the junction of the semicircular annular grooves (2), and an arc rod (22) is arranged through the middle of the fixing ring (21), and sealing rubber rings (24) are respectively welded on both sides of the arc rod (22), and a pressing ring (3) is fixedly installed at the lower end of the upper mold (11), and an annular groove (4) is provided on the edge of the upper mold (11), and the radius of the pressing ring (3) is smaller than the radius of the annular groove (4).

2. The anti-leakage injection mold according to claim 1, characterized in that: A return spring (23) is sleeved on the outer side wall of the arc-shaped rod (22), and two ends of the return spring (23) are respectively fixedly connected to a sealing rubber ring (24) and a fixing ring (21).

3. The anti-leakage injection mold according to claim 1, characterized in that: The semicircular annular grooves (2) are symmetrically arranged, and the two semicircular annular grooves (2) have the same size.

4. The anti-leakage injection mold according to claim 1, characterized in that: The middle part of the upper end of the upper mold (11) is connected to an injection tube (12), and the upper end of the lower mold (1) is provided with a mold cavity (13).

5. The anti-leakage injection mold according to claim 1, characterized in that: The size of the sealing rubber ring (24) is matched to the size of the annular groove (4), and the sealing rubber ring (24) is movably connected to the annular groove (4).

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