Exhaust structure for injection mold

Abstract

The exhaust structure comprises a lower mold, an injection molding hole and a cavity, an exhaust hole is formed in the middle of the side face of the lower portion of the lower mold, connecting blocks are fixed to the two ends of the upper portion of the side face of the lower mold, an upper mold is arranged above the lower mold, and an injection molding hole is formed in the middle of the side face of the upper portion of the upper mold. A sliding rod is slidably connected to the middle of the upper mold, a top disc is fixed to the top of the sliding rod, a wire sleeve is connected to the upper portion of the top disc, and a steel wire rope is fixed to the side face of the upper portion of the upper mold. According to the exhaust structure for the injection mold, a steel wire rope can be wound through a winding wheel, so that a sliding rod drives an exhaust plate to move downwards, the exhaust plate is matched with a sealing rubber pad to move downwards, gas in a cavity is exhausted, meanwhile, when the exhaust plate moves to the lower end, an exhaust hole can be blocked, and the problem of slurry and expected material blocking in the using process can be avoided; and the use effect is better.

Description

Technical Field

[0001] The utility model relates to the technical field related to injection molds, in particular to an exhaust structure for injection molds. Background Art

[0002] Injection molds are commonly used equipment for plastic parts processing. When the injection mold is used, the gas in the cavity inside the injection mold needs to be discharged to prevent the gas in the cavity from affecting the quality of the plastic parts. However, there are still some shortcomings in the existing exhaust structure for injection molds, such as:

[0003] An injection mold exhaust structure disclosed in the existing publication number CN219522913U includes an exhaust mechanism, the exhaust mechanism includes a bottom plate, an upper mold base, a rectangular tube, a round rod and a vertical tube; the upper mold base is arranged above the bottom plate, the top of the upper mold base is connected to and fixed with an injection tube, and the top of the upper mold base is provided with two first rectangular holes;

[0004] The above document can avoid the defects of poor filling and appearance damage caused by the inability to discharge gas smoothly, thereby reducing the impact on the quality of the finished product of the mobile phone back shell; however, after the exhaust structure in the above document is used, the slurry or slag inside the cavity is easy to block the exhaust hole during use, which affects the exhaust effect of the device over time. Therefore, we propose an exhaust structure for injection molds to solve the above problems. Utility Model Content

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

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an exhaust structure for an injection mold, comprising a lower mold, an injection hole and a cavity, an exhaust hole is opened in the middle of the lower side surface of the lower mold, and connecting blocks are fixed at both ends of the upper side surface of the lower mold, an upper mold is arranged above the lower mold, a cavity is arranged inside the lower mold, a connecting screw is fixed below the side surface of the upper mold, and a fastening nut is threadedly connected to the lower side surface of the connecting screw, an injection hole is opened in the middle of the upper side surface of the upper mold, a sliding rod is slidably connected to the middle part of the upper mold, and a top plate is fixed to the top of the sliding rod, a wire sleeve is connected above the top plate, a wire rope is fixed to the upper side surface of the upper mold, a fixed block is fixed to the other side of the upper mold, and a winding wheel is rotatably connected to the fixed block, a rotating disk located at the outer end of the fixed block is fixed on the shaft body of the winding wheel, an exhaust plate is arranged above the interior of the upper mold, and a sealing rubber pad is fixed to the outer end surface of the exhaust plate, and a threaded hole is opened in the middle of the exhaust plate.

[0007] Preferably, the connecting screw on the lower side of the upper mold and the connecting block on the side of the lower mold are arranged in a one-to-one correspondence, and the lower side of the connecting screw is fixedly connected to the connecting block through a fastening nut.

[0008] By adopting the above technical solution, the upper mold and the lower mold can be stably clamped by using the connecting screw and the fastening nut.

[0009] Preferably, a threaded head is fixed at the bottom of the sliding rod, and the sliding rod and the top plate are arranged in a "T" shape, and the top of the top plate is connected to the wire sleeve in a rotating manner.

[0010] By adopting the above technical solution, the top plate at the top of the sliding rod can be easily rotated under the line sleeve.

[0011] Preferably, a spring fixed above the upper mold is arranged on the outer side of the sliding rod, and the top of the spring is in contact connection with the bottom of the top plate.

[0012] The above technical solution is adopted to facilitate the separation between the top plate at the upper end of the sliding rod and the spring.

[0013] Preferably, the other end of the steel wire rope passes through a wire sleeve and is fixedly connected to a winding wheel.

[0014] By adopting the above technical solution, it is convenient to rotate the turntable, so that the turntable drives the winding wheel to wind up the wire rope, so that the wire sleeve presses the sliding rod downward, so that the sliding rod drives the exhaust plate to move downward.

[0015] Preferably, the outer end surface of the sealing rubber pad at the outer end of the exhaust plate matches the inner end surface of the inner cavity of the lower mold and the upper mold, and the exhaust plate and the threaded head below the sliding rod are threadedly connected for disassembly and installation.

[0016] The above technical solution facilitates the exhaust plate and the sealing rubber pad to slide inside the cavity, and also facilitates the separation of the exhaust plate and the sliding rod.

[0017] Preferably, the thickness of the exhaust plate is greater than the diameter of the exhaust holes, and four groups of exhaust holes are provided.

[0018] By adopting the above technical solution, it is convenient to block the exhaust hole through the exhaust plate after the exhaust plate exhausts air downwards, so as to facilitate the injection molding of the internal cavity.

[0019] Compared with the prior art, the utility model has the following beneficial effects: the exhaust structure of the injection mold is

[0020] (1) The connection screw and the fastening nut on the side of the upper mold can be used in conjunction with the connection block on the side of the lower mold to facilitate improving the stability of the mold clamping between the upper mold and the lower mold;

[0021] (2) The wire rope can be wound up by the winding wheel so that the sliding rod can drive the exhaust plate to move downward, so that the exhaust plate can move downward with the sealing rubber pad to discharge the gas in the cavity. At the same time, when the exhaust plate moves to the lower end, the exhaust hole can be blocked, which can avoid the problem of slurry and anticipation blocking during use, and the use effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the sliding rod and the exhaust plate of the utility model;

[0025] Figure 4 It is a schematic diagram of the top view structure of the lower mold of the utility model.

[0026] In the figure: 1. lower mold; 2. exhaust hole; 3. connecting block; 4. upper mold; 5. connecting screw; 6. fastening nut; 7. injection hole; 8. sliding rod; 9. top plate; 10. spring; 11. wire rope; 12. wire sleeve; 13. fixing block; 14. winding wheel; 15. turntable; 16. exhaust plate; 17. sealing rubber pad; 18. threaded hole; 19. threaded head; 20. cavity. DETAILED DESCRIPTION

[0027] 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.

[0028] See also Figure 1-4The utility model provides a technical solution: an exhaust structure for an injection mold, comprising a lower mold 1, an injection hole 7 and a cavity 20, an exhaust hole 2 is opened in the middle of the lower side of the lower mold 1, and connecting blocks 3 are fixed at both ends of the upper side of the lower mold 1, an upper mold 4 is arranged above the lower mold 1, and a cavity 20 is arranged inside the lower mold 1, a connecting screw 5 is fixed at the lower side of the upper mold 4, and a fastening nut 6 is threadedly connected to the lower side of the connecting screw 5, an injection hole 7 is opened in the middle of the upper side of the upper mold 4, the connecting screw 5 on the lower side of the upper mold 4 is arranged one-to-one with the connecting block 3 on the side of the lower mold 1, and the lower side of the connecting screw 5 is connected to the connecting block 3 through the fastening nut 6. Fixed connection, can facilitate stable mold closing between upper mold 4 and lower mold 1 by using connecting screw 5 and fastening nut 6, the middle part of upper mold 4 is slidably connected with sliding rod 8, and top plate 9 is fixed on the top of sliding rod 8, and threaded head 19 is fixed on the bottom of sliding rod 8, and sliding rod 8 and top plate 9 are arranged in "T" shape, and the connection mode between top plate 9 and wire sleeve 12 is rotation connection, which is convenient for top plate 9 at the top of sliding rod 8 to rotate under wire sleeve 12, and the outer side of sliding rod 8 is provided with spring 10 fixed on the top of upper mold 4, and the top of spring 10 is in contact connection with the bottom of top plate 9, which is convenient for the separation between top plate 9 and spring 10 at the upper end of sliding rod 8;

[0029] See also Figure 1-4 A wire sleeve 12 is connected to the top of the top plate 9, a wire rope 11 is fixed to the upper side of the upper mold 4, and the other end of the wire rope 11 passes through the wire sleeve 12 and is fixedly connected to the winding wheel 14, so that the turntable 15 is convenient to rotate, so that the turntable 15 drives the winding wheel 14 to wind up the wire rope 11, so that the wire sleeve 12 presses the sliding rod 8 downward, so that the sliding rod 8 drives the exhaust plate 16 to move downward, and a fixed block 13 is fixed on the other side of the upper mold 4, and the winding wheel 14 is rotatably connected to the fixed block 13, and the turntable 15 located at the outer end of the fixed block 13 is fixed on the shaft of the winding wheel 14, and an exhaust plate 16 is arranged on the upper part of the interior of the upper mold 4, and a sealing rubber at the outer end of the exhaust plate 16 The outer end surface of the rubber pad 17 coincides with the inner end surface of the internal cavity 20 of the lower mold 1 and the upper mold 4, and the exhaust plate 16 and the threaded head 19 below the sliding rod 8 are threaded disassembly and installation connections, which facilitates the exhaust plate 16 and the sealing rubber pad 17 to slide inside the cavity 20, and also facilitates the disassembly between the exhaust plate 16 and the sliding rod 8. The outer end surface of the exhaust plate 16 is fixed with a sealing rubber pad 17, and a threaded hole 18 is opened in the middle of the exhaust plate 16. The thickness of the exhaust plate 16 is higher than the diameter of the exhaust hole 2, and the exhaust hole 2 is provided with four groups, which can facilitate the exhaust plate 16 to exhaust downwards and block the exhaust hole 2 through the exhaust plate 16 for injection molding of the internal cavity 20.

[0030] Working principle: First, when in use, the upper mold 4 is installed above the lower mold 1, and the connecting screws 5 at both ends of the upper mold 4 are penetrated into the connecting block 3 on the upper side of the lower mold 1, and then the fastening nuts 6 are used to close the device;

[0031] Then, by rotating the turntable 15 on the side of the upper mold 4, the turntable 15 drives the winding wheel 14 to rotate, so that the winding wheel 14 can reel in the wire rope 11, and then the top plate 9 on the top of the sliding rod 8 is pressed when the wire rope 11 is reeled in, so that the sliding rod 8 slides on the upper mold 4, so that the exhaust plate 16 at the lower end of the sliding rod 8 moves downward, and the gas inside the mold cavity 20 of the mold is discharged from the exhaust holes 2 opened on the four sides of the lower mold 1. When the exhaust plate 16 moves to the bottom, the top plate 9 can be rotated to drive the screw below the sliding rod 8 to rotate. The threaded head 19 is separated from the threaded hole 18 on the surface of the exhaust plate 16. At the same time, the sliding rod 8 drives the threaded head 19 to slide to the top of the upper mold 4 after the compression of the spring 10 on the outside of the sliding rod 8, so as to facilitate the injection molding of the mold. The thickness of the exhaust plate 16 is greater than the aperture of the exhaust hole 2, which is convenient for the exhaust plate 16 to be discharged to the bottom, and the main exhaust hole 2 can be effectively closed to prevent the injected plastic liquid and injection slag from affecting the use of the exhaust hole 2, thereby improving the use effect of the device. This is the use principle of the exhaust structure for the injection mold.

[0032] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A venting structure for an injection mold, comprising a lower mold (1), an injection hole (7) and a cavity (20), characterized in that: An exhaust hole (2) is provided in the middle of the lower side surface of the lower mold (1), and connecting blocks (3) are fixed at both ends of the upper side surface of the lower mold (1). An upper mold (4) is provided above the lower mold (1), and a cavity (20) is provided inside the lower mold (1). A connecting screw (5) is fixed below the side surface of the upper mold (4), and a fastening nut (6) is threadedly connected below the connecting screw (5). An injection hole (7) is provided in the middle of the upper side surface of the upper mold (4), and a sliding rod (8) is slidably connected to the middle of the upper mold (4), and a top nut (20) is fixed on the top of the sliding rod (8). A plate (9) is provided, a wire sleeve (12) is connected to the top of the top plate (9), a wire rope (11) is fixed to the upper side of the upper mold (4), a fixed block (13) is fixed to the other side of the upper mold (4), and a winding wheel (14) is rotatably connected to the fixed block (13), a rotating disk (15) located at the outer end of the fixed block (13) is fixed to the shaft of the winding wheel (14), an exhaust plate (16) is arranged on the upper part of the interior of the upper mold (4), and a sealing rubber pad (17) is fixed to the outer end surface of the exhaust plate (16), and a threaded hole (18) is opened in the middle of the exhaust plate (16).

2. The exhaust structure for injection mold according to claim 1, characterized in that: The connecting screw rod (5) on the lower side of the upper mold (4) and the connecting block (3) on the side of the lower mold (1) are arranged in a one-to-one correspondence, and the lower part of the connecting screw rod (5) is fixedly connected to the connecting block (3) through a fastening nut (6).

3. The exhaust structure for injection mold according to claim 1, characterized in that: A threaded head (19) is fixed below the sliding rod (8), and the sliding rod (8) and the top plate (9) are arranged in a "T" shape. The top of the top plate (9) is connected to the wire sleeve (12) in a rotational manner.

4. The exhaust structure for injection mold according to claim 1, characterized in that: A spring (10) fixed on the upper mold (4) is arranged on the outer side of the sliding rod (8), and the top of the spring (10) is in contact connection with the bottom of the top plate (9).

5. The exhaust structure for injection mold according to claim 1, characterized in that: The other end of the steel wire rope (11) passes through a wire sleeve (12) and is fixedly connected to a winding wheel (14).

6. The exhaust structure for injection mold according to claim 1, characterized in that: The outer end surface of the sealing rubber pad (17) at the outer end of the exhaust plate (16) matches the inner end surface of the internal cavity (20) of the lower mold (1) and the upper mold (4), and the exhaust plate (16) is connected to the threaded head (19) below the sliding rod (8) in a threaded disassembly and installation manner.

7. The exhaust structure for injection mold according to claim 1, characterized in that: The thickness of the exhaust plate (16) is greater than the diameter of the exhaust holes (2), and four groups of exhaust holes (2) are provided.

Images