Optimized gate structure of connector housing injection mold

Abstract

The utility model relates to the field of mould, and disclose a kind of optimization gate structure of connector shell injection mould, including mould local shell, the round hole on mould local shell is inserted with the spigot pipe, the spigot pipe is integrally formed with annular side wing in one end of mould local shell outside, the inside of mould local shell is provided with plugging assembly, the top of mould local shell is provided with injection port, the spout inner wall of injection port can be socketed in spigot pipe outside, on forming precision and quality, by the accurate butt joint of injection port and spigot pipe, cooperate the opening and closing control of plugging assembly, the inflow path and flow of raw material can be accurately controlled.Injection, plugging assembly is pressed down to open spigot pipe, make raw material evenly fill mould cavity, effectively reduce weld mark, bubble and other defects, avoid product to appear deformation, warping problem, guarantee the dimensional accuracy and surface quality of connector shell.

Description

Technical Field

[0001] This utility model relates to the field of molds, specifically to an optimized gate structure for an injection mold for a connector housing. Background Technology

[0002] In the field of injection molding, the design of the gate structure plays a crucial role in the quality of plastic products. As a key channel connecting the runner and the cavity, the gate bears the important responsibility of guiding the molten plastic to fill the cavity quickly and evenly. Traditional injection mold gate structures have gradually revealed many drawbacks when dealing with the production of plastic products with complex shapes and high dimensional accuracy requirements, such as connector housings.

[0003] In conventional injection mold gate designs, such as side gates and point gates, it is difficult to balance the uniform distribution of glass fiber in the product and the product's appearance quality when molding connector shells containing glass fiber reinforced materials. To ensure uniform glass fiber distribution and avoid severe deformation and warping, the gate thickness is often increased. However, this easily leads to defects such as shrinkage marks on the product's appearance. Taking a common side gate as an example, when the glass fiber molten material enters the mold cavity through the side gate, it needs to break through the cured layer near the moving platen. This not only causes a chaotic distribution of glass fiber at the front of the uncured layer, leading to product deformation and warping, but also causes corrosion and depression of the mold surface at the side gate due to the corrosive effect of the glass fiber molten material, thus affecting the product's appearance.

[0004] For example, Chinese patent CN202943834U describes a mold sprue sleeve, which includes a sprue sleeve with a glue flow channel in the middle. The key feature is that a resin groove, which mates with the glue flow channel, is designed at the contact point between the sprue sleeve and the nozzle of the molding machine; the resin groove is circular. This invention has a simple structure and reasonable design. By adding a resin groove, the diameter of the sprue sleeve's end is reduced, thus reducing the flow channel diameter and saving raw materials. Furthermore, the reduced diameter of the sprue sleeve's end improves cooling efficiency, accelerates the cold solidification of the sprue, reduces stringing, and shortens the molding cycle.

[0005] Meanwhile, some traditional gate structures are not sophisticated enough in their design for controlling gate opening and closing. For example, some gates cannot effectively prevent material from overflowing from the mold after injection molding, leading to product defects and increasing the scrap rate. Furthermore, in terms of mold maintenance and repair, if a traditional integrated gate structure is used, damage to internal components will result in difficult and costly repairs, seriously affecting production efficiency and corporate economic benefits. Therefore, we propose an optimized gate structure for connector housing injection molds. Utility Model Content

[0006] To address the shortcomings of existing technologies, this invention provides an optimized gate structure for a connector housing injection mold, thus solving the aforementioned problems.

[0007] To achieve the above-mentioned objectives, this utility model provides the following technical solution: an optimized gate structure for a connector housing injection mold, comprising a partial housing of the mold, wherein a plug tube is inserted into a circular hole on the partial housing of the mold, and an annular side wing is integrally formed at one end of the plug tube located on the outer side of the partial housing of the mold, a sealing component is provided inside the partial housing of the mold, and an injection port is provided at the top of the partial housing of the mold, wherein the inner wall of the nozzle of the injection port can be sleeved on the outer side of the plug tube.

[0008] Preferably, multiple sets of circular holes are equally spaced on the annular side wing, and bolts are installed inside the circular holes. One end of the bolts is threadedly connected to a portion of the mold shell.

[0009] Preferably, the annular side wing surface has an annular protrusion integrally formed on the outer region of the insertion tube, and there is an annular gap between the annular protrusion and the insertion tube.

[0010] Preferably, the inner wall of the annular protrusion on one side corresponding to the center point is a tapered inclined inner wall, and the lower end of the nozzle of the injection port is tapered. When the injection port moves downward, when the inner wall of the injection port wraps around the outer wall of the insertion tube, the inclined wall of the outer side of the injection port and the inclined inner wall of the annular protrusion remain in contact, achieving coordination during docking.

[0011] Preferably, the sealing assembly includes a sealing block and a spring assembly. The spring assembly is disposed in the annular gap, the sealing block is disposed inside the insertion tube, and the spring assembly is located outside the insertion tube. The spring assembly is connected to the sealing block, and the spring assembly can be pressed downward by the end of the injection port. When the spring assembly is pressed downward, the sealing block moves downward synchronously.

[0012] Preferably, the sealing block is frustum-shaped, and the top inner wall of the insertion pipe is provided with a conical inner wall.

[0013] Preferably, the spring assembly includes multiple sets of springs, annular blocks, and connecting blocks. Multiple sets of inner wall grooves are equidistantly formed on the insertion tube. The connecting blocks are slidably disposed inside the inner wall grooves, and one end of the connecting blocks is fixedly connected to the side of the sealing block. The multiple sets of connecting blocks extend to the outer side of the annular gap and are fixedly connected to the annular block. The springs are fixedly installed inside the annular gap, and the tops of the springs are fixedly connected to the annular block.

[0014] Compared with the prior art, this utility model provides an optimized gate structure for a connector housing injection mold, which has the following beneficial effects:

[0015] In terms of molding precision and quality, the precise alignment of the injection port and the insertion tube, combined with the opening and closing control of the sealing component, allows for precise control of the material's inflow path and flow rate. During injection molding, the sealing component is pressed down to open the insertion tube, allowing the material to evenly fill the mold cavity, effectively reducing defects such as weld lines and bubbles, preventing product deformation and warping, and ensuring the dimensional accuracy and surface quality of the connector shell. Simultaneously, the conical design of the injection port and the annular protrusion ensures a tight seal and good fit, further improving the material filling effect and increasing the product yield.

[0016] In terms of ease of operation and production efficiency, the working principle of this structure is simple and easy to understand. Pressing down on the injection port opens the connector for injection, and lifting it after injection resets the sealing block to close the gate via a spring assembly. This high degree of automation eliminates the need for complex operating procedures, reducing the workload and labor intensity for operators and effectively improving production efficiency. Furthermore, the bolted, detachable design allows for quick disassembly of components such as the annular side wings when the mold malfunctions or requires regular maintenance. This facilitates inspection, repair, and replacement of internal components, significantly shortening mold maintenance time, reducing equipment downtime losses, and ensuring continuous production.

[0017] In terms of cost control and mold lifespan, precise raw material filling control reduces scrap rates due to product defects, lowering raw material waste and production costs. The detachable structural design avoids replacing the entire mold due to partial damage, extending mold lifespan and reducing replacement costs. The rational design of key components such as spring assemblies ensures stable performance of the gate structure over long-term use, reducing maintenance costs and production interruption risks caused by frequent component failures, thus improving the company's economic efficiency and market competitiveness. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a top view of the present invention;

[0020] Figure 3 for Figure 2 CC section view diagram;

[0021] Figure 4 for Figure 3 A magnified view of part A in the diagram.

[0022] In the diagram: 1. Partial outer shell of the mold; 2. Insert pipe; 3. Annular side wing; 4. Injection port; 5. Annular protrusion; 6. Bolt; 7. Conical inner wall; 8. Inner wall groove; 9. Sealing block; 10. Connecting block; 11. Spring; 12. Annular block. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-4 An optimized gate structure for a connector housing injection mold includes a partial mold housing 1, a plug tube 2 inserted into a circular hole on the partial mold housing 1, an annular side wing 3 integrally formed at one end of the plug tube 2 located on the outer side of the partial mold housing 1, a sealing component inside the partial mold housing 1, and an injection port 4 at the top of the partial mold housing 1. The inner wall of the nozzle of the injection port 4 can be sleeved on the outer side of the plug tube 2. When injection is required, the injection port 4 moves downward to contact the plug tube 2. When the injection port 4 is pressed down, the sealing component is pressed down simultaneously, at which time the plug tube 2 is opened, and then the raw material enters the mold through the plug tube 2.

[0025] Furthermore, multiple sets of circular holes are equally spaced on the annular side wing 3, and bolts 6 are installed inside the circular holes. One end of the bolts 6 is threaded to the mold partial outer shell 1. By adding the installation method of bolts 6, this device can be disassembled, making it convenient for maintenance or replacement.

[0026] Furthermore, an annular protrusion 5 is integrally formed on the outer region of the insertion tube 2 on the surface of the annular side wing 3, and there is an annular gap between the annular protrusion 5 and the insertion tube 2.

[0027] Furthermore, the inner wall of the annular protrusion 5 on one side corresponding to the center point is a tapered inclined inner wall, and the lower end of the nozzle of the injection port 4 is tapered. When the injection port 4 moves downward, when the inner wall of the injection port 4 wraps around the outer wall of the insertion tube 2, the inclined wall of the outer side of the injection port 4 and the inclined inner wall of the annular protrusion 5 remain in contact, achieving coordination during docking.

[0028] Furthermore, the sealing assembly includes a sealing block 9 and a spring assembly. The spring assembly is disposed in the annular gap, the sealing block 9 is disposed inside the insertion tube 2, and the spring assembly is located outside the insertion tube 2. The spring assembly is connected to the sealing block 9, and the spring assembly can be pressed down by the end of the injection port 4. When the spring assembly is pressed down, the sealing block 9 moves down synchronously.

[0029] Furthermore, the sealing block 9 is frustum-shaped, and a conical inner wall 7 is provided on the top inner wall of the insertion pipe 2. The conical inner wall 7 is a conical inner wall. When the spring assembly rebounds normally, the outer wall surface of the sealing block 9 fits against the conical inner wall 7 to keep the insertion pipe 2 sealed.

[0030] Furthermore, the spring assembly includes multiple sets of springs 11, annular blocks 12, and connecting blocks 10. Multiple sets of inner wall grooves 8 are equidistantly formed on the insertion pipe 2. The connecting blocks 10 are slidably disposed inside the inner wall grooves 8, and one end of the connecting blocks 10 is fixedly connected to the side of the sealing block 9. The multiple sets of connecting blocks 10 extend to the outer side of the annular gap and are fixedly connected to the annular block 12. Springs 11 are fixedly installed inside the annular gap, and the tops of the springs 11 are fixedly connected to the annular block 12. When injection molding is required, the injection port 4 moves downwards, and then the lower end face of the injection port 4 contacts the annular block 12. Pressing down on block 12 causes spring 11 to compress, then connecting block 10 moves downward, causing sealing block 9 to move downward. The outer wall of sealing block 9 then no longer adheres to the conical inner wall 7, and injection is then performed at injection port 4. The raw material flows downward through the gap between the side wall of sealing block 9 and the conical inner wall 7. After injection is complete, injection port 4 is lifted downward, spring 11 rebounds, and block 12 moves upward. Sealing block 9 then resets, and its side wall again adheres to the conical inner wall 7. The insertion pipe 2 is then sealed again to prevent raw material from overflowing from the mold inner wall.

[0031] Working principle: When injection molding is required, the injection port 4 moves downward to contact the insertion tube 2. When the injection port 4 is pressed down, the sealing component will be pressed down simultaneously. At this time, the insertion tube 2 is opened, and then the raw material enters the mold through the insertion tube 2.

[0032] Structural Description:

[0033] Mold partial outer shell 1: As the basic component of the mold gate structure, it serves as the carrier for the installation and operation of other components. Its surface has circular holes for inserting the plug tube 2, and the top is equipped with an injection port 4 to provide an inlet for material injection. The interior houses the sealing components, which work together to control the opening and closing of the gate.

[0034] Insert pipe 2: Inserted into the circular hole of the partial outer shell 1 of the mold, with one end extending to the outside of the partial outer shell 1 and integrally formed with an annular side wing 3. Insert pipe 2 is the channel for raw material to enter the mold. Its interior can accommodate the sealing block 9, which cooperates with the sealing component to open during injection molding and close after injection molding to prevent raw material from overflowing.

[0035] Annular side wing 3: Located at one end of the insertion tube 2 outside the mold partial outer shell 1, it is integrally formed with the insertion tube 2. Multiple sets of circular holes are evenly distributed on it, which are threadedly connected to the mold partial outer shell 1 by bolts 6, enabling detachable installation and facilitating mold maintenance and replacement. In addition, the surface of the annular side wing 3 is also integrally formed with annular protrusions 5 to assist in the docking of the injection port 4 and the insertion tube 2.

[0036] Injection port 4: Located on the top of the partial outer shell 1 of the mold, the inner wall of the nozzle can be fitted onto the outside of the insertion tube 2. The lower end of its nozzle is conical, fitting snugly against the conical inclined inner wall of the annular protrusion 5 to ensure proper alignment. During injection, injection port 4 moves downward, pressing down the sealing component to open the insertion tube 2, allowing the raw material to enter the mold through the insertion tube 2; after injection, injection port 4 lifts up, and the sealing component resets to close the insertion tube 2.

[0037] Annular protrusion 5: integrally formed on the outer area of ​​the insertion tube 2 on the surface of the annular side wing 3, with an annular gap between it and the insertion tube 2 to accommodate the spring assembly. The inner wall on one side corresponding to the center point is a tapered inclined inner wall, which cooperates with the tapered structure at the lower end of the injection port 4 nozzle to ensure the sealing and stability when the injection port 4 is connected to the insertion tube 2.

[0038] Bolt 6: Installed in the circular hole of the annular side wing 3, one end of which is threaded to the mold partial outer shell 1, fixing the annular side wing 3 to the mold partial outer shell 1, so that the entire gate structure can be disassembled and installed, which is convenient for subsequent maintenance and component replacement.

[0039] Conical inner wall 7: Located on the top inner wall of the insertion tube 2, it has a conical structure. When the sealing block 9 rebounds under the action of the spring assembly, the outer wall surface of the sealing block 9 fits against the conical inner wall 7 to form a seal, preventing the material in the mold from overflowing and ensuring the sealing of the gate after injection molding.

[0040] Inner wall groove 8: Equally spaced openings on the wall of the insertion pipe 2, used for sliding the connecting block 10. The inner wall groove 8 provides a moving track for the connecting block 10, allowing the connecting block 10 to drive the sealing block 9 to move up and down under the action of the spring assembly, thereby realizing the opening and closing control of the insertion pipe 2.

[0041] Sealing block 9: Located inside the insertion tube 2, it has a frustum-shaped structure. It cooperates with the conical inner wall 7 at the top of the insertion tube 2, and under the action of the spring assembly, it realizes the sealing and opening of the insertion tube 2. When the spring assembly rebounds normally, the outer wall of the sealing block 9 fits against the conical inner wall 7, sealing the insertion tube 2; when the injection port 4 presses down on the spring assembly, the sealing block 9 moves down, and the raw material can enter the mold through the gap between its side wall and the conical inner wall 7.

[0042] Connecting block 10: Slidably disposed inside the inner wall groove 8, one end is fixedly connected to the side of the sealing block 9, and the other end extends to the outside of the annular gap and is fixedly connected to the annular block 12. Under the action of the spring assembly, the connecting block 10 drives the sealing block 9 to move up and down, transmitting the force of the spring assembly and realizing the opening and closing action of the insertion pipe 2.

[0043] Spring 11: Installed inside the annular gap, with its top fixedly connected to the annular block 12. When the injection port 4 presses down on the annular block 12, the spring 11 is compressed, storing elastic potential energy; after the injection port 4 is lifted, the spring 11 rebounds, pushing the annular block 12 upward, causing the sealing block 9 to reset and seal the insertion pipe 2.

[0044] Annular block 12: It is fixedly connected to one end of multiple sets of connecting blocks 10 extending to the outside of the annular gap, and is also connected to the top of spring 11. When the injection port 4 is pressed down, the annular block 12 is pressured to drive the connecting block 10 and the sealing block 9 to move down, opening the insertion pipe 2; after injection molding is completed, under the action of spring 11, the annular block 12 moves up, causing the sealing block 9 to reset and close the insertion pipe 2.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An optimized gate structure for a connector housing injection mold, characterized in that, The mold includes a partial outer shell (1), a plug tube (2) is inserted into a circular hole on the partial outer shell (1), and an annular side wing (3) is integrally formed at one end of the plug tube (2) located outside the partial outer shell (1). A sealing component is provided inside the partial outer shell (1), and an injection port (4) is provided at the top of the partial outer shell (1). The inner wall of the nozzle of the injection port (4) can be sleeved on the outside of the plug tube (2).

2. The optimized gate structure of a connector housing injection mold according to claim 1, characterized in that: Multiple sets of circular holes are equally spaced on the annular side wing (3), and bolts (6) are installed inside the circular holes. One end of the bolts (6) is threaded to the mold partial outer shell (1).

3. The optimized gate structure of a connector housing injection mold according to claim 1, characterized in that: The annular side wing (3) has an annular protrusion (5) integrally formed on the outer region of the insertion tube (2), and there is an annular gap between the annular protrusion (5) and the insertion tube (2).

4. The optimized gate structure of a connector housing injection mold according to claim 3, characterized in that: The inner wall of the annular protrusion (5) on one side corresponding to the center point is a tapered inclined inner wall, and the lower end of the nozzle of the injection port (4) is tapered.

5. The optimized gate structure of a connector housing injection mold according to claim 3, characterized in that: The sealing assembly includes a sealing block (9) and a spring assembly. The spring assembly is disposed in the annular gap. The sealing block (9) is disposed inside the insertion tube (2), and the spring assembly is located outside the insertion tube (2). The spring assembly is connected to the sealing block (9). The spring assembly can be pressed down by the end of the injection port (4). When the spring assembly is pressed down, the sealing block (9) moves down synchronously.

6. The optimized gate structure of a connector housing injection mold according to claim 5, characterized in that: The sealing block (9) is frustum shaped, and the top inner wall of the insertion pipe (2) is provided with a conical inner wall (7), which is a conical inner wall.

7. The optimized gate structure of a connector housing injection mold according to claim 5, characterized in that: The spring assembly includes multiple sets of springs (11), annular blocks (12), and connecting blocks (10). Multiple sets of inner wall grooves (8) are equidistantly provided on the insertion tube (2). The connecting blocks (10) are slidably disposed inside the inner wall grooves (8), and one end of the connecting blocks (10) is fixedly connected to the side of the sealing block (9). Multiple sets of connecting blocks (10) extend to one end of the outer side of the annular gap and are fixedly connected to the annular block (12). The springs (11) are fixedly installed inside the annular gap, and the top of the springs (11) is fixedly connected to the annular block (12).

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