Exhaust structure of die-casting die

Abstract

The utility model belongs to the technical field of exhaust structures, and particularly relates to an exhaust structure of a die-casting die, which comprises a lower die, an upper die is arranged at the upper end of the lower die, an injection molding head is detachably mounted in the upper die, a hanging rod is slidably connected in the upper die, a sealing plate is welded at the lower end of the hanging rod, and the sealing plate is welded with the lower die. And an air outlet hole is formed in the upper mold, a supporting cylinder is welded to the upper end of the upper mold, and an adjusting mechanism is arranged in the supporting cylinder. By arranging the sealing plate and the air outlet hole, air in the mold is discharged through the air outlet hole until molten metal is in contact with the sealing plate, so that the sealing plate moves upwards to enter the upper mold to block the air outlet hole, and the situation that the molten metal overflows from the air outlet hole and blocks the air outlet hole in the injection molding process is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of exhaust structures, in particular to an exhaust structure of a die-casting mold. Background Art

[0002] The utility model patent with announcement number CN216461672U discloses an improved die-casting mold exhaust structure, including an upper mold, an upper mounting plate and a fixing assembly, wherein the lower mold is provided with a lower mold at the lower part, the upper mold is provided with an upper mounting plate at the upper part, the bottom of the lower mold is provided with a lower mounting plate, the left side of the lower mounting plate is provided with a fixing assembly, the lower mold is provided with a casting groove inside, one end of the casting groove is fixedly connected with an exhaust pipe, the connecting frame is fixedly installed on the side of the lower mounting plate, the upper part of the connecting frame is provided with a rotating shaft, and the upper part of the rotating shaft is movably connected with an adjusting column; the patent increases the exhaust area, increases the exhaust volume of the mold, and has a good exhaust effect. The fixed assembly further prevents the die-casting mold from being offset, enhances the stability of the mold when it is used, and has a clever design, which ensures the molding quality of the die-casting mold and has good practical performance. However, after the exhaust is completed, the metal also enters the exhaust hole, which will cause the exhaust hole to be blocked. At the same time, the exhaust speed is too fast, which will cause the metal liquid to produce flying materials, resulting in safety hazards. Therefore, improvements are needed. Utility Model Content

[0003] The utility model aims to provide an exhaust structure for a die-casting mold, which solves the problem that after the exhaust is completed, metal also enters the exhaust hole, causing the exhaust hole to be blocked. At the same time, too fast exhaust speed will cause the metal liquid to produce flying materials, causing safety hazards.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an exhaust structure of a die-casting mold, comprising a lower mold, an upper mold is arranged at the upper end of the lower mold, an injection head is detachably installed in the upper mold, a suspension rod is slidably connected to the interior of the upper mold, a sealing plate is welded to the lower end of the suspension rod, the sealing plate is welded to the lower mold, an air outlet is opened inside the upper mold, a support tube is welded to the upper end of the upper mold, and an adjustment mechanism is arranged inside the support tube.

[0005] Preferably, the adjustment mechanism includes a support ring, the support ring and the support tube are fixedly connected, a plug is slidably connected inside the support ring, a sliding pin is welded to the outside of the plug, a spiral ring is threadedly connected to the outside of the support tube, a support plate is welded to the upper inner part of the support tube, a guide rod is welded to the lower end of the support plate, the guide rod and the plug are slidably connected, and a spring is arranged on the outside of the guide rod. By rotating the spiral ring and the support tube to make a threaded motion, the sliding pin drives the plug to slide inside the support ring, and the gap between the plug and the support ring is adjusted, thereby controlling the exhaust speed to avoid the metal liquid flying due to the excessive exhaust speed caused by the thermal expansion of the air.

[0006] Preferably, a slide groove is provided inside the wall of the support tube, and the slide groove is slidably connected to the slide pin. The slide groove is provided to guide the movement of the slide pin.

[0007] Preferably, a stopper sleeve is fixedly sleeved on the outer side of the middle part of the sliding pin, and the stopper sleeve is slidably connected to the support tube. By providing the stopper sleeve, air leakage of the sliding groove is prevented.

[0008] Preferably, a slider is welded to the lower end of the sliding pin, and the slider is slidably connected to the spiral ring. By providing the slider, the friction between the sliding pin and the spiral ring is reduced.

[0009] Preferably, one end of the spring is fixedly connected to the support plate, and the other end of the spring is fixedly connected to the plug. By providing the spring, the plug can be automatically reset.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0011] 1. The utility model provides a sealing plate and an air outlet, and the air in the mold is discharged through the air outlet until the molten metal contacts the sealing plate, so that the sealing plate moves up into the upper mold to seal the air outlet, thereby preventing the molten metal from overflowing from the air outlet during the injection molding process and clogging the air outlet.

[0012] 2. The utility model rotates the screw ring and the support tube to make a threaded motion, so that the sliding pin drives the plug to slide in the support ring, adjusts the gap between the plug and the support ring, and then controls the exhaust speed to avoid the flying of molten metal due to excessive exhaust speed caused by thermal expansion of air. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0014] Figure 2 For this utility model Figure 1 A partial cross-sectional view of

[0015] Figure 3 For this utility model Figure 2 A magnified image of point A;

[0016] Figure 4 For this utility model Figure 2 Schematic diagram of the support tube.

[0017] In the figure: 1. lower mold; 2. upper mold; 3. injection head; 4. suspension rod; 5. sealing plate; 6. air outlet; 7. support tube; 8. adjustment mechanism; 81. support ring; 82. plug; 83. sliding pin; 84. slide groove; 85. stopper sleeve; 86. screw ring; 87. slider; 88. support plate; 89. guide rod; 810. spring. DETAILED DESCRIPTION

[0018] 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.

[0019] See also Figure 1-Figure 4 A venting structure of a die-casting mold comprises a lower mold 1, an upper mold 2 is arranged at the upper end of the lower mold 1, an injection head 3 is detachably installed in the upper mold 2, a suspension rod 4 is slidably connected inside the upper mold 2, a sealing plate 5 is welded to the lower end of the suspension rod 4, the sealing plate 5 is welded to the lower mold 1, an air outlet 6 is opened inside the upper mold 2, a support tube 7 is welded to the upper end of the upper mold 2, and an adjustment mechanism 8 is arranged inside the support tube 7.

[0020] See also Figure 1 , Figure 4 The adjusting mechanism 8 includes a supporting ring 81, which is fixedly connected to the supporting tube 7. A plug 82 is slidably connected inside the supporting ring 81, and a sliding pin 83 is welded on the outside of the plug 82. A sliding groove 84 is provided inside the wall of the supporting tube 7, and the sliding groove 84 and the sliding pin 83 are slidably connected. By setting the sliding groove 84, the movement of the sliding pin 83 is guided. A stopper sleeve 85 is fixedly sleeved on the outside of the middle part of the sliding pin 83, and the stopper sleeve 85 is slidably connected to the supporting tube 7. By setting the stopper sleeve 85, the sliding groove 84 is prevented from leaking. A screw ring 86 is threadedly connected to the outside of the supporting tube 7. A slider 87 is welded on the lower end of the sliding pin 83, and the slider 87 is slidably connected to the screw ring 86. By setting the slider 87, the sliding pin 83 and the screw ring 86 are reduced. The friction force between the rings 86, a support plate 88 is welded on the inner upper part of the support tube 7, and a guide rod 89 is welded on the lower end of the support plate 88. The guide rod 89 and the plug 82 are slidably connected, and a spring 810 is arranged on the outer side of the guide rod 89, one end of the spring 810 is fixedly connected to the support plate 88, and the other end of the spring 810 is fixedly connected to the plug 82. By setting the spring 810, the plug 82 can be automatically reset, and the screw ring 86 and the support tube 7 are rotated to make a threaded movement, so that the sliding pin 83 drives the plug 82 to slide in the support ring 81, and the gap between the plug 82 and the support ring 81 is adjusted, so as to control the exhaust speed, so as to avoid the flying of molten metal due to the excessive exhaust speed caused by the thermal expansion of the air.

[0021] The specific implementation process of the utility model is as follows: during injection molding, the molten metal enters the mold cavity through the injection head 3, so that the air in the mold cavity is discharged through the air outlet 6, until the molten metal contacts the sealing plate 5, so that the sealing plate 5 floats up and enters the upper mold 2, and the air outlet 6 is blocked to prevent the molten metal from overflowing from the air outlet 6 during the injection molding process and clogging the air outlet 6. According to the air outlet speed adjustment device, the screw ring 86 and the support tube 7 are rotated to make a threaded movement, so that the screw ring 86 moves up, the screw ring 86 drives the sliding pin 83 to move, and the sliding pin 83 drives the plug 82 to slide in the support ring 81, so that the distance between the plug 82 and the support ring 81 changes, and the size of the gap between the plug 82 and the support ring 81 is adjusted, and then the exhaust speed is controlled to prevent the air thermal expansion and the exhaust speed from being too fast to cause the molten metal to fly.

[0022] 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 venting structure for a die-casting mold, comprising a lower mold (1), characterized in that: An upper mold (2) is arranged at the upper end of the lower mold (1), an injection head (3) is detachably installed in the upper mold (2), a suspension rod (4) is slidably connected to the interior of the upper mold (2), a sealing plate (5) is welded to the lower end of the suspension rod (4), the sealing plate (5) and the lower mold (1) are welded, an air outlet hole (6) is opened inside the upper mold (2), a support tube (7) is welded to the upper end of the upper mold (2), and an adjustment mechanism (8) is arranged inside the support tube (7).

2. The exhaust structure of a die-casting mold according to claim 1, characterized in that: The adjustment mechanism (8) comprises a support ring (81), the support ring (81) and the support tube (7) are fixedly connected, a plug (82) is slidably connected inside the support ring (81), a sliding pin (83) is welded to the outer side of the plug (82), a screw ring (86) is threadedly connected to the outer side of the support tube (7), a support plate (88) is welded to the inner upper part of the support tube (7), a guide rod (89) is welded to the lower end of the support plate (88), the guide rod (89) and the plug (82) are slidably connected, and a spring (810) is arranged on the outer side of the guide rod (89).

3. The exhaust structure of a die-casting mold according to claim 2, characterized in that: A sliding groove (84) is provided inside the wall of the support tube (7), and the sliding groove (84) and the sliding pin (83) are slidably connected.

4. The exhaust structure of a die-casting mold according to claim 2, characterized in that: A stopper sleeve (85) is fixedly sleeved on the outer side of the middle portion of the sliding pin (83), and the stopper sleeve (85) is slidably connected to the support tube (7).

5. The exhaust structure of a die-casting mold according to claim 2, characterized in that: A slider (87) is welded to the lower end of the sliding pin (83), and the slider (87) is slidably connected to the screw ring (86).

6. The exhaust structure of a die-casting mold according to claim 2, characterized in that: One end of the spring (810) is fixedly connected to the support plate (88), and the other end of the spring (810) is fixedly connected to the plug (82).

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