Injection mold runner adjusting device

Abstract

The utility model discloses a runner adjusting device of an injection mold, which belongs to the technical field of injection molds and comprises a fixed mold plate group arranged on an injection molding machine and provided with a main sprue; the runner plate is arranged below the fixed mold plate group; the mold cavity is formed in the outer wall of the side, facing the movable mold plate, of the runner plate; the runner is arranged on the surface of the runner plate, and the runner is communicated with the main sprue and the mold cavity; the flow channel adjusting component comprises a plug piece and a flow channel adjusting valve which can be mounted in a manner of being matched with the flow channel, and the plug piece and the flow channel adjusting valve are alternatively mounted in the flow channel; when the plug piece is installed in the flow channel, the flow channel is smooth, and when the flow channel adjusting valve is installed in the flow channel, the flow channel can be blocked. According to the utility model, molten plastic can be effectively prevented from flowing to a damaged runner, medical negligence caused by unqualified products flowing into the market is avoided, the maintenance cost is reduced, and the time is saved.

Description

Technical Field

[0001] This utility model belongs to the field of injection mold technology, and in particular to an injection mold flow channel adjustment device. Background Technology

[0002] In injection molding, the mold is one of the key factors determining product quality. Traditional injection molds typically consist of a moving mold plate, a fixed mold plate, a gating system, and mold cavities. Molten plastic enters the runner through the main gate and is then distributed to the various mold cavities for filling and solidification. However, in actual production, due to various reasons (such as wear, accidental damage, etc.), certain parts of the mold may malfunction, especially the mold cavity areas. For multi-cavity molds, even if only one cavity is damaged, it can lead to the continuous production of defective products in that cavity. If production continues normally, defective products will mix with qualified products, requiring manual sorting later, which not only wastes manpower and resources but also reduces production efficiency.

[0003] Currently, Chinese patents with publication numbers CN206374143U, CN207105481U, and CN211138031U disclose several flow channel control structures. These structures control flow rate by adjusting the cross-sectional area of ​​the flow channel, and theoretically, they can also achieve flow channel blocking by complete closure. However, these flow channel regulating valve structures are relatively complex and require a large installation space in the mold. This directly leads to an increase in the spacing between mold cavities, resulting in low mold space utilization and reduced product output per mold, thus affecting overall production efficiency.

[0004] Therefore, there is an urgent need to develop a flow channel control device with a simple structure and small footprint. Utility Model Content

[0005] The purpose of this invention is to provide an injection mold flow channel adjustment device that is simple in structure, occupies little space, is easy to install, and has high reliability, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a flow channel adjustment device for injection molds, comprising:

[0007] The fixed mold plate group is set on the injection molding machine, and the main gate is set in the fixed mold plate group;

[0008] The flow channel plate is located below the fixed template assembly;

[0009] The mold cavity is located on the outer wall of the runner plate on the side facing the moving mold plate;

[0010] A runner is provided on the surface of a runner plate, and the runner connects the main gate and the mold cavity;

[0011] A flow channel regulating component includes a plug and a flow channel regulating valve, both of which are adapted to be installed in the flow channel;

[0012] When the plug is installed in the flow channel, the flow channel is unobstructed; when the flow channel regulating valve is installed in the flow channel, it can block the flow channel.

[0013] In a preferred embodiment of this scheme, the bottom of the flow channel is provided with a threaded countersunk hole;

[0014] The plug includes a threaded section that mates with the countersunk hole and a disassembly end. When the plug is threadedly connected in the countersunk hole, it prevents molten plastic from flowing into the countersunk hole.

[0015] The flow channel regulating valve includes a valve bolt that mates with the threaded countersunk hole and a valve body that mates with the flow channel. When the flow channel regulating valve is installed in the flow channel, the valve bolt passes through the valve body and is threadedly connected to the threaded countersunk hole, thereby fixing the valve body in the flow channel to block the flow channel.

[0016] In this preferred embodiment, when the plug is threaded into the countersunk hole, the disassembly end is flush with the hole opening.

[0017] In this preferred embodiment, the valve bolt and the valve body are rotatable relative to each other.

[0018] In a preferred embodiment of this scheme, when the valve body is fitted into the flow channel, the cross-sections of the valve body and the flow channel fit together perfectly.

[0019] In a preferred embodiment of this design, the valve body has an adapter hole, and the bolt head of the valve bolt engages with the tapered shape of the adapter hole.

[0020] Compared with the prior art, the technical effects and advantages of this utility model are as follows:

[0021] 1. The flow channel is managed by two interchangeable components: a plug and a flow channel regulating valve. During normal production, the plug is used to keep the flow channel unobstructed. When a cavity is damaged, the plug in the corresponding flow channel is replaced with a flow channel regulating valve to block the flow channel and prevent molten plastic from flowing into the damaged cavity, thus avoiding the continuous production of defective products. At the same time, it ensures the normal production of other cavities, which saves raw materials and avoids the problem of defective products mixing with qualified products and requiring manual sorting later. This improves production efficiency and reduces production costs.

[0022] 2. It has a simple structure and occupies little space, which can effectively reduce the distance between mold cavities, improve mold space utilization and production efficiency, and is easy to disassemble and assemble with high reliability. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a flow channel with a plug installed.

[0024] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0025] Figure 3 This is a schematic diagram of a flow channel regulating valve installed in the flow channel.

[0026] Figure 4 for Figure 3 Enlarged view of point B in the middle.

[0027] Figure 5 This is a breakdown diagram of the flow channel regulating valve.

[0028] Figure 6 This is a schematic diagram showing the operating status of the flow channel regulating valve for a multi-cavity mold.

[0029] In the diagram: 1. Fixed mold plate group; 2. Main gate; 3. Runner plate; 4. Mold cavity; 5. Runner; 6. Runner regulating valve; 7. Plug; 8. Threaded section; 9. Disassembly end; 11. Valve bolt; 12. Valve body; 13. Adapter hole. Detailed Implementation

[0030] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0031] Unless otherwise defined, the directions mentioned herein, such as up, down, left, right, front, back, inside, and outside, are based on the directions shown in the figures of this utility model, and are explained here together.

[0032] This embodiment provides, for example Figures 1 to 6 The injection mold runner adjustment device shown includes a fixed platen assembly 1, a runner plate 3, a mold cavity 4, a runner 5, and a runner adjustment component.

[0033] The fixed mold plate group 1 is set on the injection molding machine, and the main gate 2 is set in the fixed mold plate group 1; the runner plate 3 is set below the fixed mold plate group 1; the mold cavity 4 is set on the outer wall of the runner plate 3 facing the moving mold plate; the runner 5 is set on the surface of the runner plate 3, and the runner 5 connects the main gate 2 and the mold cavity 4.

[0034] The flow channel regulating component includes a plug 7 and a flow channel regulating valve 6, which are respectively adapted to be installed in the flow channel 5. Either the plug 7 or the flow channel regulating valve 6 is installed in the flow channel 5. When the plug 7 is installed in the flow channel 5, the flow channel 5 is unobstructed. When the flow channel regulating valve 6 is installed in the flow channel 5, it can block the flow channel.

[0035] In this embodiment, a threaded countersunk hole is provided at the bottom of the channel 5. The plug 7 includes a threaded section 8 that mates with the threaded countersunk hole and a disassembly end 9. When the plug 7 is threadedly connected in the threaded countersunk hole, it prevents molten plastic from flowing into the threaded countersunk hole. The channel regulating valve 6 includes a valve bolt 11 that mates with the threaded countersunk hole and a valve body 12 that mates with the channel 5. The valve bolt 11 passes through the valve body 12, and the valve bolt 11 and the valve body 12 can rotate relative to each other. When the channel regulating valve 6 is installed in the channel 5, the valve body 12 is fitted in the channel 5 and remains stationary. The cross-sections of the valve body 12 and the channel 5 are matched together. The valve bolt 11 passes through the valve body 12 and is screwed into the threaded countersunk hole, thus fixing the valve body 12 in the channel 5 to block the channel 5.

[0036] In this embodiment, when the plug 7 is threaded into the threaded countersunk hole, the disassembly end 9 is flush with the hole opening, thereby ensuring the smooth flow of the flow channel 5 to the greatest extent.

[0037] In this embodiment, the valve body 12 has an adapter hole 13, and the bolt head of the valve bolt 11 is tapered with the adapter hole 13.

[0038] Working principle:

[0039] During normal use, the plug 7 is screwed into the countersunk hole of the flow channel 5, ensuring unobstructed flow and preventing molten plastic from flowing into the countersunk hole. If a cavity 4 is found to be damaged, the plug 7 is removed, and the flow channel regulating valve 6 is installed. Its valve body 12 is fitted into the flow channel 5, and the valve bolt 11 passes through the valve body 12 and is threaded into the countersunk hole, thereby fixing the valve body 12 in the flow channel 5 to block the flow channel 5. Once the flow channel 5 is effectively blocked, the molten plastic will no longer flow to the damaged cavity 4, thus avoiding the generation of waste and the manufacture of defective products.

[0040] It should be noted that, in this document, relational terms such as "one" and "two" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0041] 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. A flow channel adjustment device for injection molds, characterized in that, include: A fixed mold assembly (1) is installed on the injection molding machine, and a main gate (2) is installed in the fixed mold assembly (1); The flow channel plate (3) is located below the fixed template group (1); The mold cavity (4) is located on the outer wall of the runner plate (3) facing the moving mold plate; A runner (5) is provided on the surface of the runner plate (3), and the runner (5) connects the main gate (2) and the mold cavity (4); The flow channel regulating component includes a plug (7) and a flow channel regulating valve (6) that are respectively adapted to be installed in the flow channel (5), wherein either the plug (7) or the flow channel regulating valve (6) is installed in the flow channel (5); When the plug (7) is installed in the flow channel (5), the flow channel (5) is unobstructed. When the flow channel regulating valve (6) is installed in the flow channel (5), it can block the flow channel.

2. The injection mold runner adjustment device according to claim 1, characterized in that: The bottom of the channel (5) is provided with a threaded countersunk hole; The plug (7) includes a threaded section (8) that mates with the threaded countersunk hole and a disassembly end (9). When the plug (7) is threadedly connected in the threaded countersunk hole, it prevents molten plastic from flowing into the threaded countersunk hole. The flow channel regulating valve (6) includes a valve bolt (11) that mates with the threaded countersunk hole and a valve body (12) that mates with the flow channel (5). When the flow channel regulating valve (6) is installed in the flow channel (5), the valve bolt (11) passes through the valve body (12) and is threadedly connected to the threaded countersunk hole, thereby fixing the valve body (12) in the flow channel (5) to block the flow channel (5).

3. The injection mold runner adjustment device according to claim 2, characterized in that: When the plug (7) is threaded into the threaded countersunk hole, the disassembly end (9) is flush with the hole opening.

4. The injection mold runner adjustment device according to claim 3, characterized in that: The valve bolt (11) and the valve body (12) can rotate relative to each other.

5. The injection mold runner adjustment device according to claim 4, characterized in that: When the valve body (12) is fitted into the flow channel (5), the cross-sections of the valve body (12) and the flow channel (5) fit together.

6. The injection mold runner adjustment device according to claim 5, characterized in that: The valve body (12) has an adapter hole (13), and the bolt head of the valve bolt (11) is tapered to fit the adapter hole (13).

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