Multi-cavity synchronous injection molding uniform shunting structure for injection mold

Abstract

The utility model discloses a multi-chamber synchronous injection molding uniform shunting structure for an injection mold, which belongs to the technical field of injection molds and comprises a bottom plate, four legs at the top of the bottom plate are fixedly connected with struts, the tops of the struts are fixedly connected with a top plate, the bottom of the top plate is uniformly and fixedly connected with cylinders, and the output ends of the cylinders are fixedly connected with a movable mold plate. The top of the movable mold plate is connected with a main runner in a penetrating mode, branch runners are evenly and fixedly connected to the two ends of the bottom of the main runner, pin-point gates are fixedly connected to the tail ends of the branch runners, and the branch runners are located in the movable mold plate. According to the multi-cavity synchronous injection molding uniform distribution structure for the injection mold, through the main runner and the branch runners which are symmetrically arranged, a material in a molten state can be uniformly conveyed to each cavity, the situation that the molten material cannot uniformly fill the multiple cavities due to the distance problem is prevented, and it is ensured that each cavity can obtain an equal amount of injection molding material; and the forming quality and consistency of plastic products are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold technical field, concretely is a kind of injection mold with multi-chamber synchronous injection even shunting structure. BACKGROUND

[0002] Injection mold is a kind of tool for mass production of plastic products, it is fused by injection molding process, and the plastic raw material is injected into mold cavity under high pressure, after cooling solidification, the plastic product with specific shape and size is obtained, its structure is precise and complex, mainly by pouring system, forming part and structural part are composed, pouring system guides plastic melt to flow into cavity, forming part determines the shape and size of product, and structural part ensures the normal operation and opening and closing of mold, injection mold is widely used in automobile manufacturing, electronic appliances, medical devices, daily necessities and other industries, as small as mobile phone shell, toys, as large as automobile bumper, household appliance shell, it cannot do without its "shaping", with the advantages of high efficiency, high precision and repeatable production, injection mold greatly promotes the development and innovation of manufacturing industry, and is the core element to realize mass production and quality stability.

[0003] Patent with publication number CN218019833U discloses a multi-chamber key injection mold, including support seat, support seat lower end middle part installs top-up device, support seat lower end left part and lower end right part are equipped with support frame, support seat upper end middle part installs lower mold, support seat right end middle part installs cooling device, support seat upper end rear part installs support frame, support frame upper end front part installs injection device. However, in the use process of the existing device, multiple forming cavities are fed through the upper part, which leads to the fact that the fluid enters different chambers in sequence due to the distance, so that the cooling time in each chamber cannot be controlled to keep synchronization, and the fluid cannot be uniformly filled into multiple chambers.

[0004] Therefore, in order to solve such problems, we propose a multi-chamber synchronous injection even shunting structure for injection mold. INVENTION CONTENTS

[0005] The utility model aims at providing a multi-chamber synchronous injection even shunting structure for injection mold, to solve the problem that in the use process of the existing device, multiple forming cavities are fed through the upper part, which leads to the fact that the fluid enters different chambers in sequence due to the distance, so that the cooling time in each chamber cannot be controlled to keep synchronization, and the fluid cannot be uniformly filled into multiple chambers.

[0006] In order to achieve the above object, the utility model provides the following technical scheme: A kind of multi-chamber synchronous injection molding even shunt structure for injection mold, including bottom plate, four legs of the top of bottom plate are uniformly connected with support column, the top of support column is fixedly connected with top plate, the bottom of top plate is uniformly fixedly connected with cylinder, the output end of cylinder is fixedly connected with movable die plate, the top of movable die plate is connected with main runner and penetrates, the both ends of main runner bottom are uniformly fixedly connected with shunt channel, the end of shunt channel is fixedly connected with point gate, and shunt channel is located inside movable die plate.

[0007] Further, the top of the top plate is connected with a positioning ring, and the end of the positioning ring is fixedly connected with the top of the main runner.

[0008] Further, the top of the bottom plate is uniformly fixedly connected with an electric telescopic rod, and the top of the electric telescopic rod is fixedly connected with a fixed die plate.

[0009] Further, the both ends of the top of the bottom plate are fixedly connected with side plates, and the inner wall of the side plate is provided with a sliding groove, and the sliding groove is matched with a sliding block fixedly connected to the outer wall of the movable die plate and the fixed die plate.

[0010] Further, the bottom of the movable die plate is uniformly fixedly connected with a sealing plate, and the top of the fixed die plate is uniformly provided with a sealing groove, and the movable die plate and the fixed die plate are sealingly connected through the sealing plate and the sealing groove.

[0011] Further, the inside of the sealing groove on the top of the fixed die plate is uniformly provided with a cavity, and the inner wall of the cavity is provided with an exhaust groove extending to the outer wall of the fixed die plate above.

[0012] Further, a top rod is movably connected in the cavity on the fixed die plate, and the bottom of the top rod is fixedly connected with the top of the bottom plate.

[0013] Compared with the prior art, the utility model has the beneficial effects that: the multi-chamber synchronous injection molding even shunt structure for injection mold adopts a novel structure design, and the specific contents are as follows:

[0014] (1) The multi-chamber synchronous injection molding uniform distribution structure of the injection mold, the main flow channel and the distribution channel are symmetrically arranged, when the molten plastic raw material is injected into the main flow channel, the balanced pressure conduction characteristics of the symmetric structure can make the raw material smoothly flow down along the main flow channel, and accurately and uniformly distribute to the distribution channels at both ends of the bottom, effectively avoiding the uneven filling problem caused by the distance difference between each cavity and the injection port in the traditional injection molding method, ensuring that each cavity can receive an equal amount of injection material, and ensuring the consistency of key parameters such as density and thickness of each part when the plastic product is formed, greatly reducing the size deviation, surface defects and other quality problems caused by uneven material distribution, thereby significantly improving the molding quality and overall consistency of the plastic product, and providing a strong guarantee for large-scale and high-quality plastic product production.

[0015] (2) The multi-chamber synchronous injection molding uniform distribution structure of the injection mold, in the operation process of the injection mold, the electric telescopic rod and the ejector rod closely cooperate, when the mold enters the parting stage, the electric telescopic rod quickly responds, and the strong pushing force of the electric telescopic rod pushes the fixed mold plate to move stably, so that the mold is smoothly opened, at this time, the ejector rod accurately pushes the molded plastic product out of the cavity by cleverly cooperating with the fixed mold plate. This efficient ejection mechanism greatly facilitates subsequent material taking operations, greatly shortens the production cycle, significantly improves production efficiency, and provides strong support for large-scale continuous production. The sealing plate at the bottom of the movable mold plate and the sealing groove at the top of the fixed mold plate are designed to be sealingly connected, which can effectively block the leakage of plastic melt during the injection molding process, ensuring the integrity of the injection molding process. Whether it is in the high-pressure injection molding stage or in the process of plastic melt flowing and filling the cavity, it can strictly prevent the melt from overflowing, ensuring the molding precision of the plastic product and avoiding product defects and material waste caused by melt leakage. The exhaust groove carefully opened above the inner wall of the fixed mold plate cavity can accurately capture and guide the air in the cavity to be quickly discharged when the plastic melt is rapidly injected into the cavity, avoiding air remaining in the cavity. Once the air remains, the plastic product is prone to defects such as bubbles and cavities during the cooling and solidification process, which seriously affects the quality and performance of the product. The reasonable design and effective operation of the exhaust groove can prevent these problems from the source, laying a solid foundation for producing high-quality plastic products.

[0016] Further, after the plastic product is cooled and formed, the electric telescopic rod is started, the electric telescopic rod is retracted upward, driving the fixed mold plate to move upward, realizing mold opening. During the mold opening process, the ejector rod in the fixed mold plate cavity moves with the fixed mold plate. Since the bottom of the ejector rod is fixedly connected with the bottom plate, the relative position does not change, so the ejector rod will push the molded plastic product out of the cavity, facilitating the operator to take out the plastic product, and completing a injection molding production cycle. BRIEF DESCRIPTION OF DRAWINGS

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

[0018] Figure 2 It is an explosion structure schematic diagram of the utility model;

[0019] Figure 3 It is a three-dimensional schematic diagram of the movable die assembly of the utility model;

[0020] Figure 4 It is an explosion schematic diagram of the movable die assembly of the utility model;

[0021] Figure 5 It is a three-dimensional schematic diagram of the fixed die assembly of the utility model;

[0022] Figure 6 It is an explosion schematic diagram of the fixed die assembly of the utility model;

[0023] Figure 1, bottom plate; 11, pillar; 111, side plate; 12, top plate; 121, positioning ring; 13, air cylinder; 131, movable die plate; 132, sealing plate; 14, main runner; 141, branch runner; 142, point gate; 2, electric telescopic rod; 21, fixed die plate; 211, sealing groove; 212, exhaust groove; 22, ejector pin. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to 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 the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0025] The utility model provides the following technical scheme: a kind of multi-chamber synchronous injection molding even flow structure for injection mold.

[0026] Embodiment one: a kind of multi-chamber synchronous injection molding even flow structure for injection mold, by the main runner 14 and branch runner 141 of symmetrically arranged component, to the material in molten state is evenly transported, prevent the material in molten state from being not evenly filled into multiple chambers, such as Figure 1 - Figure 4As shown, a multi-chamber synchronous injection molding uniform distribution structure for injection mold includes a bottom plate 1, four legs of the top of the bottom plate 1 are fixedly connected with a support column 11, the top of the support column 11 is fixedly connected with a top plate 12, the bottom of the top plate 12 is uniformly fixedly connected with an air cylinder 13, the output end of the air cylinder 13 is fixedly connected with a movable die plate 131, the top of the movable die plate 131 is penetratedly connected with a main runner 14, the two ends of the bottom of the main runner 14 are uniformly fixedly connected with a distribution runner 141, the ends of the distribution runner 141 are fixedly connected with a point gate 142, the distribution runner 141 is located inside the movable die plate 131, the top of the top plate 12 is penetratedly connected with a positioning ring 121, the end of the positioning ring 121 is fixedly connected with the top of the main runner 14, the inside of the top sealing groove 211 of the fixed die plate 21 is uniformly provided with a cavity, and the upper portion of the cavity inner wall is provided with an exhaust groove 212 extending to the outer wall of the fixed die plate 21.

[0027] Firstly, the air cylinder 13 is started, the output end of the air cylinder 13 drives the movable die plate 131 to move downwards, the sealing plate 132 at the bottom of the movable die plate 131 gradually inserts into the sealing groove 211 at the top of the fixed die plate 21, the sealing connection between the movable die plate 131 and the fixed die plate 21 is realized, at the same time, the sliding blocks at the two ends of the movable die plate 131 and the fixed die plate 21 slide in the sliding grooves of the side plates 111, the stable and accurate mold closing process is ensured, the injection port of the injection equipment is butted with the positioning ring 121, the molten plastic raw material enters the main runner 14 through the positioning ring 121, in the main runner 14, the plastic raw material flows downwards due to the pressure effect, and then is uniformly distributed into the distribution runners 141 at the two ends of the bottom of the main runner 14, the distribution runner 141 is located inside the movable die plate 131, the plastic raw material is further conveyed to the point gate 142 at the end, and finally is injected into the cavity inside the sealing groove 211 at the top of the fixed die plate 21 through the point gate 142, in the injection process, the air in the cavity is exhausted through the exhaust groove 212, after the plastic raw material is injected into the cavity, the gradual molding of the plastic product is realized after a period of cooling and solidification.

[0028] In the embodiment two, different from the embodiment one, the cooperation of the electric telescopic rod 2 and the top rod 22 and other components makes the material to be molded be effectively ejected during the parting process, and the subsequent material taking is facilitated. Figures 5-6 As shown, the top of the bottom plate 1 is uniformly fixedly connected with an electric telescopic rod 2, the top of the electric telescopic rod 2 is fixedly connected with a fixed die plate 21, the two ends of the top of the bottom plate 1 are fixedly connected with side plates 111, the inner walls of the side plates 111 are all provided with sliding grooves, the sliding grooves are matched with the sliding blocks fixedly connected to the outer walls at the two ends of the movable die plate 131 and the fixed die plate 21, the bottom of the movable die plate 131 is uniformly fixedly connected with a sealing plate 132, the top of the fixed die plate 21 is uniformly provided with a sealing groove 211, the movable die plate 131 and the fixed die plate 21 are sealingly connected through the sealing plate 132 and the sealing groove 211, a top rod 22 is movably connected in a cavity on the fixed die plate 21, and the bottom of the top rod 22 is fixedly connected with the top of the bottom plate 1.

[0029] After the plastic product is cooled and formed, the electric telescopic rod 2 is started, the electric telescopic rod 2 is retracted upwards, the fixed mold plate 21 is moved upwards, the mold is opened, in the opening process, the ejector rod 22 in the cavity of the fixed mold plate 21 moves together with the fixed mold plate 21, since the bottom of the ejector rod 22 is fixedly connected with the bottom plate 1, the relative position is unchanged, so the ejector rod 22 will eject the formed plastic product from the cavity, the operator can conveniently take out the plastic product, and a cycle of injection molding production is completed.

[0030] The above is the working process of the whole device, and the contents not described in detail in the specification all belong to the prior art known to the person skilled in the art.

[0031] Although the embodiments of the utility model have been shown and described, it can be understood by those of ordinary skill in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A multi-chamber synchronous injection molding uniform distribution structure for injection molding mold, comprising a bottom plate (1), characterized in that: The bottom plate (1) top four legs are fixedly connected with the support (11), the top of the support (11) is fixedly connected with the top plate (12), the bottom of the top plate (12) is uniformly fixedly connected with the air cylinder (13), the output end of the air cylinder (13) is fixedly connected with the dynamic mold plate (131), the top of the dynamic mold plate (131) is connected with the main runner (14), the bottom of the main runner (14) is uniformly fixedly connected with the branch runner (141), the end of the branch runner (141) is fixedly connected with the point gate (142), and the branch runner (141) is located in the dynamic mold plate (131).

2. The multi-chambered synchronized injection and uniform distribution structure for injection mold according to claim 1, characterized in that: The top of the top plate (12) is connected with the positioning ring (121), and the end of the positioning ring (121) is fixedly connected with the top of the main runner (14).

3. The multi-chambered synchronized injection and uniform distribution structure for injection mold according to claim 1, characterized in that: The top of the bottom plate (1) is uniformly fixedly connected with the electric telescopic rod (2), and the top of the electric telescopic rod (2) is fixedly connected with the fixed mold plate (21).

4. The multi-chambered synchronized injection and uniform distribution structure for injection mold according to claim 1, characterized in that: The both ends of the bottom plate (1) top are fixedly connected with the side plate (111), and the inner wall of the side plate (111) is provided with a sliding groove, and the sliding groove is matched with the sliding block fixedly connected to the outer wall of the dynamic mold plate (131) and the fixed mold plate (21).

5. The multi-chambered synchronized injection and uniform distribution structure for injection mold according to claim 1, characterized in that: The bottom of the dynamic mold plate (131) is uniformly fixedly connected with the sealing plate (132), and the top of the fixed mold plate (21) is uniformly provided with a sealing groove (211), and the dynamic mold plate (131) and the fixed mold plate (21) are sealingly connected through the sealing plate (132) and the sealing groove (211).

6. The multi-chambered, simultaneous injection, uniform distribution structure for injection molds of claim 3, wherein: The inner side of the sealing groove (211) of the top of the fixed mold plate (21) is uniformly provided with a cavity, and the inner wall of the cavity is provided with an exhaust groove (212) extending to the outer wall of the fixed mold plate (21).

7. The multi-chambered synchronized injection and uniform distribution structure for injection mold according to claim 3, characterized in that: The cavity of the fixed mold plate (21) is movably connected with the top rod (22), and the bottom of the top rod (22) is fixedly connected with the top of the bottom plate (1).

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