Anti-backflow injection mold sprue structure

Abstract

The utility model discloses an anti-backflow injection mold sprue structure which comprises a mold pouring main body, a top plate is fixedly connected to the bottom end of the mold pouring main body, an upper mold is fixedly connected to the bottom of the top plate, supporting rods are movably connected to the four corners of the bottom of the top plate, and connecting plates are fixedly connected to the bottom ends of the supporting rods. A movable opening is formed in the top of the mold pouring main body, a limiting rod is movably connected to the top of the mold pouring main body through the movable opening, a reset spring is movably connected to the outer side of the limiting rod, a movable sleeve is fixedly connected to the top end of the limiting rod, and a pouring opening is formed in the top end of the movable sleeve; the bottom end of the movable sleeve is fixedly connected with a connecting rod, the bottom end of the connecting rod is fixedly connected with a plug, through the arrangement of the movable sleeve, the limiting rod, the reset spring, the connecting rod and the plug, the backflow prevention effect can be achieved, the injection molding efficiency is guaranteed through the structure, and the situation that an injection molding object blocks a sprue of an injection mold, and the production efficiency is affected is avoided.

Description

Technical Field

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

[0002] The injection mold consists of a movable mold and a fixed mold. The movable mold is installed on the movable template of the injection molding machine, and the fixed mold is installed on the fixed template of the injection molding machine. 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. In order to reduce the heavy workload of mold design and manufacturing, most injection molds use standard mold frames. Injection molds are important process equipment for the production of various industrial products. With the rapid development of the plastics industry and the promotion and application of plastic products in aviation, aerospace, electronics, machinery, ships, automobiles and other industrial sectors, the requirements for molds are getting higher and higher.

[0003] The patent document with the prior art publication number CN215396606U provides an anti-backflow device for injection molds. The anti-backflow structure is located at the middle side of the upper end of the upper mold base, wherein the injection head is located above the middle end of the upper mold base, and the injection head is located at the upper end of the anti-backflow structure. A receiving groove is provided on the upper side of the middle end of the upper mold base, wherein the anti-backflow structure includes a feed port, a reset spring, a receiving cylinder, a working ball, a pushing cylinder and a docking tube, wherein the feed port is located inside the receiving groove, wherein the feed port and the upper mold base are welded. Through the setting of this utility model, the injection mold can be subjected to anti-backflow operation during the injection molding process, thereby effectively avoiding the waste of raw materials during the injection molding process, and at the same time, it is beneficial to ensure the quality of the product.

[0004] However, although the existing anti-backflow injection mold gate structure can play an anti-backflow role during use, the injection efficiency is low during injection molding, and the injection molded object can easily block the injection mold gate, thereby affecting the production efficiency. For this reason, we propose an anti-backflow injection mold gate structure. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies of the prior art, the utility model provides an anti-backflow injection mold gate structure to solve the problems raised in the above background technology.

[0007] (II) Technical solution

[0008] To achieve the above objectives, the utility model is implemented through the following technical solutions: a backflow prevention injection mold gate structure, including a mold casting body, the bottom end of the mold casting body is fixedly connected to a top plate, the bottom of the top plate is fixedly connected to an upper mold, the four corners of the bottom of the top plate are movably connected to support rods, the bottom ends of the support rods are fixedly connected to a connecting plate, the bottom of the connecting plate is fixedly connected to a mounting assembly, a movable opening is opened at the top of the mold casting body, the top of the mold casting body is movably connected to a limit rod through the movable opening, the outer side of the limit rod is movably connected to a return spring, the top of the limit rod is fixedly connected to a movable sleeve, the top of the movable sleeve is provided with a casting port, the bottom end of the movable sleeve is fixedly connected to a connecting rod, and the bottom end of the connecting rod is fixedly connected to a plug.

[0009] Preferably, the mounting assembly comprises a base plate and a fixing opening, the base plate is fixedly connected to the bottom of the connecting plate, and the fixing openings are provided at the four corners of the top of the base plate.

[0010] Preferably, a lower mold is fixedly connected to the top of the connecting plate, and a mold groove is formed on the top of the lower mold.

[0011] Preferably, the movable sleeve is movably connected to the mold casting body, and the bottom end diameter of the movable sleeve is matched with the inner diameter of the mold casting body.

[0012] Preferably, the plug has a semicircular structure and the outer surface of the plug is smooth.

[0013] Preferably, the mold casting body is made of metal material, and the mold casting body is located in the center of the top of the top plate.

[0014] (III) Beneficial effects

[0015] The utility model provides a backflow prevention injection mold gate structure, which has the following beneficial effects:

[0016] (1) This anti-backflow injection mold gate structure is provided with a movable sleeve, a limit rod, a reset spring, a connecting rod and a plug. When using the injection mold gate structure, the staff aligns the discharge port of the injection molding equipment with the pouring port of the movable sleeve, and then enables the injection molding equipment to push the movable sleeve, and the movable sleeve will enter the mold casting body, and the movable sleeve pushes the plug downward through the connecting rod, thereby opening the mold casting body, and at the same time the limit rod enters the movable port and compresses the reset spring. At this time, when the injection molding equipment is injecting, the injection molded material will flow along the outer side of the plug and flow into the upper mold and the lower mold through the mold casting body. After the injection molding is completed, when the injection molding equipment is separated from the movable sleeve, the reset spring uses its own resilience to push the movable sleeve to reset, and the movable sleeve drives the plug upward through the connecting rod, thereby blocking the mold casting body, thereby playing an anti-backflow role. This structure ensures the injection molding efficiency and avoids the injection molded material blocking the injection mold gate and affecting the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a partial structural schematic diagram of the casting body of the mold of the utility model;

[0019] Figure 3 It is a cross-sectional view of the casting body of the mold of the utility model;

[0020] Figure 4 It is a partial structural schematic diagram of the movable sleeve of the mold of the utility model.

[0021] In the figure: 1. lower mold; 2. mold groove; 3. connecting plate; 4. bottom plate; 5. fixing port; 6. support rod; 7. top plate; 701. upper mold; 8. mold casting body; 9. movable sleeve; 10. pouring port; 11. limit rod; 12. return spring; 13. connecting rod; 14. plug; 15. movable port. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4The utility model provides a technical solution: a backflow prevention injection mold gate structure, including a mold casting body 8, the bottom end of the mold casting body 8 is fixedly connected with a top plate 7, the bottom of the top plate 7 is fixedly connected with an upper mold 701, the four corners of the bottom of the top plate 7 are movably connected with support rods 6, the bottom end of the support rod 6 is fixedly connected with a connecting plate 3, the bottom of the connecting plate 3 is fixedly connected to a mounting assembly, a movable opening 15 is opened at the top of the mold casting body 8, the top of the mold casting body 8 is movably connected with a limit rod 11 through the movable opening 15, the outer side of the limit rod 11 is movably connected with a return spring 12, the top of the limit rod 11 is fixedly connected with a movable sleeve 9, the top of the movable sleeve 9 is opened with a casting port 10, the bottom end of the movable sleeve 9 is fixedly connected with a connecting rod 13, and the bottom end of the connecting rod 13 is fixedly connected with a plug 14.

[0024] In this embodiment, specifically, the installation assembly includes a base plate 4 and a fixing port 5. The base plate 4 is fixedly connected to the bottom of the connecting plate 3. The fixing ports 5 are opened at the four corners of the top of the base plate 4. By inserting bolts into the fixing ports 5 and then fixing the bolts, the base plate 4 and the device can be firmly fixed together.

[0025] In this embodiment, specifically, the top of the connecting plate 3 is fixedly connected with the lower mold 1 , and the top of the lower mold 1 is provided with a mold groove 2 , so that the injection molded object can be better molded through the mold groove 2 .

[0026] In the present embodiment, specifically, the movable sleeve 9 is movably connected to the mold casting body 8, the bottom end diameter of the movable sleeve 9 is matched with the inner diameter of the mold casting body 8, the discharge port of the injection molding equipment is aligned with the casting port 10 of the movable sleeve 9, and then the injection molding equipment pushes the movable sleeve 9, the movable sleeve 9 will enter the mold casting body 8, and the movable sleeve 9 pushes the plug 14 downward through the connecting rod 13, thereby opening the mold casting body 8.

[0027] In this embodiment, specifically, the plug 14 has a semicircular structure, and the outer surface of the plug 14 is smooth. The plug 14 with a semicircular structure allows the injection molded product to flow better along the outside, and can also firmly block the mold casting body 8 to prevent the injection molded product from flowing back.

[0028] In this embodiment, specifically, the mold casting body 8 is made of metal material, and the mold casting body 8 is located in the center of the top of the top plate 7. The mold casting body 8 made of metal material is more durable and not easy to be damaged.

[0029] Working principle: After the utility model is installed, first check the installation and safety protection of the utility model. When using the injection mold gate structure, the staff aligns the discharge port of the injection molding equipment with the pouring port 10 of the movable sleeve 9, and then the injection molding equipment pushes the movable sleeve 9, and the movable sleeve 9 will enter the mold pouring body 8, and the movable sleeve 9 pushes the plug 14 downward through the connecting rod 13, thereby opening the mold pouring body 8, and at the same time the limit rod 11 enters the movable port 15 and compresses the reset spring 12. At this time, the injection molding equipment pushes the movable sleeve 9, and the movable sleeve 9 pushes the plug 14 downward through the connecting rod 13, thereby opening the mold pouring body 8. At the same time, the limit rod 11 enters the movable port 15 and compresses the reset spring 12. When the plastic equipment is injecting, the injection molded material will flow along the outside of the plug 14 and flow into the upper mold 701 and the lower mold 1 through the mold casting body 8. After the injection molding is completed, when the injection molding equipment is separated from the movable sleeve 9, the reset spring 12 uses its own resilience to push the movable sleeve 9 to reset, and the movable sleeve 9 drives the plug 14 to move upward through the connecting rod 13, thereby blocking the mold casting body 8, thereby playing a role in preventing backflow. In this way, the use process of the utility model is completed. The utility model has a simple structure and is safe and convenient to use.

[0030] 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.

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.

Claims

1. A backflow-proof injection mold gate structure, comprising a mold casting body (8), characterized in that: The bottom end of the mold casting body (8) is fixedly connected to a top plate (7), the bottom of the top plate (7) is fixedly connected to an upper mold (701), the four corners of the bottom of the top plate (7) are movably connected to support rods (6), the bottom end of the support rod (6) is fixedly connected to a connecting plate (3), the bottom of the connecting plate (3) is fixedly connected to a mounting assembly, a movable opening (15) is provided at the top of the mold casting body (8), the top of the mold casting body (8) is movably connected to a limit rod (11) through the movable opening (15), the outer side of the limit rod (11) is movably connected to a return spring (12), the top end of the limit rod (11) is fixedly connected to a movable sleeve (9), the top end of the movable sleeve (9) is provided with a casting port (10), the bottom end of the movable sleeve (9) is fixedly connected to a connecting rod (13), and the bottom end of the connecting rod (13) is fixedly connected to a plug (14).

2. The anti-backflow injection mold gate structure according to claim 1, characterized in that: The installation assembly comprises a bottom plate (4) and a fixing opening (5); the bottom plate (4) is fixedly connected to the bottom of the connecting plate (3); and the fixing openings (5) are provided at the four corners of the top of the bottom plate (4).

3. The anti-backflow injection mold gate structure according to claim 1, characterized in that: The top of the connecting plate (3) is fixedly connected to a lower mold (1), and the top of the lower mold (1) is provided with a mold groove (2).

4. The anti-backflow injection mold gate structure according to claim 1, characterized in that: The movable sleeve (9) is movably connected to the mold casting body (8), and the bottom end diameter of the movable sleeve (9) is matched with the inner diameter of the mold casting body (8).

5. The anti-backflow injection mold gate structure according to claim 1, characterized in that: The plug (14) has a semicircular structure, and the outer surface of the plug (14) is smooth.

6. The anti-backflow injection mold gate structure according to claim 1, characterized in that: The mold casting body (8) is made of metal material and is located at the top center of the top plate (7).

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