Pouring gate structure of injection mold

Abstract

The utility model discloses a sprue gate structure of an injection mold, which comprises a sprue gate arranged on a movable mold of the injection mold, a mounting cavity crossing the sprue gate is arranged on the movable mold, a plugging block is arranged in the mounting cavity, and a communicating hole is arranged on the plugging block; and a pushing structure is further arranged on the movable mold and can push the plugging block to move in the mounting cavity, so that the plugging block can plug the sprue gate, or the communicating hole can communicate with the sprue gate. The pouring head extrudes the pressing block to move downwards, so that the plugging block is pushed to move, the pouring opening is opened, and a mold is poured conveniently; after pouring is completed, the pouring head is pulled out of the movable mold, the pressing block resets and drives the plugging block to reset, the pouring opening is closed again, the pouring material is prevented from flowing back to the mold, the structure is simple, the structure of the pouring head does not need to be changed, and the mold is suitable for wide popularization.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a pouring port structure of an injection mold. Background Art

[0002] The mold pouring gate is also called the feed port. It is a narrow passage between the runner and the mold cavity. During pouring, the pouring head of the pouring equipment is inserted into the pouring gate for pouring. After the pouring is completed, the pouring head is pulled out of the pouring gate. At this time, the pouring material poured into the mold is easy to flow back out of the mold from the pouring gate, affecting the pouring effect of the mold.

[0003] To this end, the patented technology with application number CN202021644221.X discloses a mold pouring port pressurized sealing device, which blocks the pouring port through two shear plates after pouring to prevent the pouring material from flowing back. However, the patented technology has a relatively complex structure and requires a major change in the pouring head structure of the pouring equipment, which is not suitable for large-scale promotion. Utility Model Content

[0004] The utility model aims to solve the above problems and provides a pouring gate structure of an injection mold, which has a simple structure and can prevent pouring materials from flowing back out of the mold.

[0005] The purpose of the utility model is achieved through the following technical scheme: a pouring gate structure of an injection mold, comprising a pouring gate arranged on a movable mold of the injection mold, the movable mold is provided with a mounting cavity spanning the pouring gate, a blocking block is installed in the mounting cavity, and a connecting hole is provided on the blocking block; the movable mold is also provided with a pushing structure, and the pushing structure can push the blocking block to move in the mounting cavity so that the blocking block can block the pouring gate, or the connecting hole can be connected with the pouring gate.

[0006] Furthermore, the pushing structure includes a concave cavity arranged on the surface of the movable mold, an outer cylinder arranged on the movable mold and connected to the concave cavity, an extension cylinder arranged at the bottom of the concave cavity and connected to the pouring port, an extrusion spring sleeved on the extension cylinder, and a pressure block supported on the top of the extrusion spring; a through hole connected to the extension cylinder is opened on the pressure block, and the pressure block is connected to the blocking block through a pushing assembly; the pressure block can move up and down to push the blocking block through the pushing assembly.

[0007] The installation cavity is communicated with the concave cavity through a slot hole, a plug hole is obliquely provided on the pressing block, and an insertion rod is provided on the blocking block. The insertion rod passes through the slot hole upward and is inserted into the plug hole.

[0008] A return spring for pushing the blocking block to a blocking position is arranged in the installation cavity.

[0009] The upper end of the outer cylinder is provided with an annular end cover for preventing the pressing block from escaping from the outer cylinder.

[0010] Compared with the prior art, the present application has the following beneficial effects: the present application uses the pouring head to squeeze the pressing block downward, thereby pushing the sealing block to move, and the pouring gate is opened to facilitate pouring the mold; when the pouring is completed, the pouring head is pulled out of the movable mold, the pressing block is reset and drives the sealing block to reset, and the pouring gate is closed again to prevent the pouring material from flowing back out of the mold. The utility model has a simple structure, does not require the structure of the pouring head to be changed, and is suitable for wide promotion.

[0011] Some additional features of the present application may be explained in the following description. Some additional features of the present application will be apparent to those skilled in the art by inspection of the following description and corresponding drawings or understanding of the production or operation of the embodiments. The features disclosed in the present application may be realized and achieved by practice or use of various methods, means and combinations of the specific embodiments described below. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The exemplary embodiments of the present application and their descriptions are used to explain the present application and do not constitute a limitation of the present application. In each figure, the same reference numeral represents the same component.

[0013] Figure 1 It is a cross-sectional view of the utility model when the pouring port is blocked.

[0014] Figure 2 It is a cross-sectional view of the utility model when the pouring gate is opened.

[0015] The figure marks in the above drawings are: 1-movable mold, 2-pouring gate, 3-extrusion spring, 4-concave cavity, 5-annular end cover, 6-pressing block, 7-extension cylinder, 8-through hole, 9-insertion hole, 10-insertion rod, 11-blocking block, 12-reset spring, 13-connecting hole, 14-outer cylinder, 15-slot hole, 16-installation cavity, 17-pouring head. DETAILED DESCRIPTION

[0016] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0017] It should be noted that if the description and claims of the present application and the above-mentioned drawings relate to the terms "first", "second", etc., they are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, if the terms "including" and "having" and any of their variations are involved, it is intended to cover non-exclusive inclusions, for example, the process, method, system, product or equipment that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0018] In this application, if the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. are involved, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0019] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0020] In addition, in this application, the terms "installed", "set", "provided with", "connected", "connected", "socketed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0021] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0022] Example

[0023] like Figure 1As shown, this embodiment discloses a pouring gate structure of an injection mold, which includes a pouring gate 2 arranged on a movable mold 1 of the injection mold, and the pouring gate 2 is connected to the flow channel and mold cavity of the mold. In order to achieve the purpose of the utility model, the movable mold 1 is provided with a mounting cavity 16 spanning the pouring gate 2, a blocking block 11 is installed in the mounting cavity 16, and a connecting hole 13 is arranged on the blocking block 11, and the diameter of the connecting hole 13 matches the diameter of the pouring gate 2, and the blocking block 11 can move in the mounting cavity 16; Figure 1 , 2 As shown, when the blocking block 11 moves to the left, the blocking block can block the pouring port 2, and when the blocking block 11 moves to the right, the connecting hole 13 can be connected to the pouring port 2, so that the pouring port 2 is opened.

[0024] In addition, a return spring 12 is provided in the installation cavity 16, and the return spring 12 is located between the blocking block 11 and the inner wall of the installation cavity 16. When the return spring 12 is in the original state, the blocking block 11 is in the position of blocking the pouring gate 2. When the return spring 12 is in a compressed state, the pouring gate 2 is in an open state.

[0025] In addition, a pushing structure is also provided on the movable mold 1 , which can push the blocking block 11 to move in the installation cavity 16 , so that the blocking block 11 blocks the pouring port 2 , or the communicating hole 13 can be connected with the pouring port 2 .

[0026] Specifically, the pushing structure includes a concave cavity 4 arranged on the surface of the movable mold 1, an outer cylinder 14 arranged on the movable mold 1 and connected to the concave cavity 4, an extension cylinder 7 arranged at the bottom of the concave cavity 4 and connected to the pouring port 2, an extrusion spring 3 sleeved on the extension cylinder 7, and a pressure block 6 supported on the top of the extrusion spring 3.

[0027] When set, the lower end of the extrusion spring 3 is sleeved on the extension tube 7, and the upper end thereof supports the pressing block 6. The diameter of the pressing block 6 matches the inner diameter of the outer tube 14, and the pressing block 6 can move up and down in the outer tube 14. The pressing block 6 is provided with a through hole 8, and when the pressing block 6 moves downward, the pressing block 6 can abut against the extension tube 7, and the through hole 8 is connected to the extension tube 7.

[0028] In addition, the installation cavity 16 is connected with the concave cavity 4 through the slot 15, the pressing block 6 is provided with a plug hole 9 obliquely, and the blocking block 11 is provided with a plug rod 10 matching the plug hole 9, and the plug rod 10 passes upward through the slot 15 and then is inserted into the plug hole 9.

[0029] like Figure 1As shown, the upper end of the insertion rod 10 is inclined toward the reset spring. Through the above structure, when the pouring head 17 of the pouring equipment is inserted from the through hole 8, the pressure block 6 is squeezed and moved downward, and the insertion rod 10 is continuously inserted into the insertion hole 9, thereby pushing the blocking block 11 to move toward the reset spring. When the pressure block 6 abuts against the extension tube 7, the connecting hole 13 is just connected with the pouring port 2, and the pouring work can be carried out at this time. Figure 2 When the pouring head 17 is withdrawn, the pressing block 6 is reset upward, and at the same time, the blocking block 11 is driven to reset, and the blocking block 11 blocks the pouring port 2 again to prevent the pouring material from flowing back out of the mold.

[0030] In addition, an annular end cover 5 is provided at the upper end of the outer cylinder 14 , and the annular end cover 5 can abut against the edge of the pressing block 6 to prevent the pressing block 6 from escaping from the outer cylinder 14 without affecting the insertion of the pouring head 17 into the through hole 8 .

[0031] In a specific implementation, a downwardly inclined through hole can be provided on the movable mold 1, one end of the through hole is connected to the installation cavity 16 and the concave cavity 4, and the other end extends to the outer wall of the movable mold. If any casting material enters the installation cavity 16 or the concave cavity 4 during the pouring process, it can be discharged through the through hole. Similarly, when the blocking block 11 is in the blocking position, the connecting hole 13 can also be connected to the through hole to prevent the casting material from remaining in the connecting hole 13.

[0032] It should be noted that all features disclosed in this specification, or steps in all methods or processes disclosed, except for mutually exclusive features and / or steps, can be combined in any manner.

[0033] In addition, the above specific embodiments are exemplary, and those skilled in the art can come up with various solutions inspired by the disclosure of the utility model, and these solutions also belong to the disclosure scope of the utility model and fall within the protection scope of the utility model. Those skilled in the art should understand that the utility model specification and its drawings are illustrative and do not constitute a limitation of the claims. The protection scope of the utility model is defined by the claims and their equivalents.

Claims

1. A pouring gate structure of an injection mold, comprising a pouring gate (2) arranged on a movable mold (1) of the injection mold, characterized in that: The movable mold (1) is provided with a mounting cavity (16) spanning the pouring port (2), a blocking block (11) is installed in the mounting cavity (16), and a connecting hole (13) is provided on the blocking block (11); the movable mold (1) is also provided with a pushing structure, and the pushing structure can push the blocking block (11) to move in the mounting cavity (16), so that the blocking block (11) can block the pouring port (2), or the connecting hole (13) can be connected with the pouring port (2).

2. The pouring gate structure of the injection mold according to claim 1, characterized in that: The pushing structure comprises a concave cavity (4) arranged on the surface of the movable mold (1), an outer cylinder (14) arranged on the movable mold (1) and connected to the concave cavity (4), an extension cylinder (7) arranged at the bottom of the concave cavity (4) and connected to the pouring port (2), an extrusion spring (3) sleeved on the extension cylinder (7), and a pressure block (6) supported on the top of the extrusion spring (3); the pressure block (6) is provided with a through hole (8) connected to the extension cylinder (7), and the pressure block (6) is connected to the blocking block (11) through a pushing component; the pressure block (6) can move up and down to push the blocking block (11) through the pushing component.

3. The pouring gate structure of the injection mold according to claim 2, characterized in that: The installation cavity (16) is connected to the concave cavity (4) via a slot hole (15); a plug hole (9) is obliquely provided on the pressing block (6); an insertion rod (10) is provided on the blocking block (11); the insertion rod (10) passes upward through the slot hole (15) and is then inserted into the plug hole (9).

4. The pouring gate structure of the injection mold according to claim 3, characterized in that: A return spring (12) for pushing the blocking block (11) to a blocking position is arranged in the installation cavity (16).

5. The pouring gate structure of the injection mold according to claim 4, characterized in that: The upper end of the outer cylinder (14) is provided with an annular end cover (5) for preventing the pressing block (6) from escaping from the outer cylinder (14).

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