Injection molding joint of mold and insulating sheet processing mold

Abstract

The utility model discloses an injection molding joint of a mold, which comprises an injection molding head, the injection molding head is provided with an injection molding runner and a glue receiving groove, and the injection molding runner is communicated with the glue receiving groove; the injection molding runner is provided with an inlet and an outlet, the inlet is opposite to the glue receiving groove, and the outlet is communicated with the outside. The insulating sheet processing mold comprises a machine body and an injection molding joint of the mold, and the injection molding joint is arranged in the machine body. When the injection molding head is used, the injection molding head is provided with the injection molding runner and the glue receiving groove, so that cold glue at the front section of a nozzle of an injection molding machine can be injected into the glue receiving groove in the injection molding process, and then thermoplastic fluid with high temperature enters a mold cavity of a product through the injection molding runner, so that the probability that the cold glue enters the mold cavity is reduced as much as possible.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a mold for injection molding joints and insulating sheet processing. Background Technology

[0002] In existing insulating sheet processing molds, during injection molding, the nozzle tip of the injection molding machine usually generates a small amount of cold glue during the product cooling stage. This cold glue will be injected out in the next injection cycle. Since the product is very thin, even a small amount of cold glue entering the mold cavity can cause the mold cavity to become blocked, resulting in incomplete injection. Utility Model Content

[0003] In order to overcome at least one of the defects mentioned above in the prior art, the present invention provides an injection joint for a mold and a mold for processing insulating sheets. The injection head has a glue receiving groove. During the injection process, the cold glue at the front of the injection nozzle of the injection molding machine can be injected into the glue receiving groove, and the high-temperature plastic at the back is then injected into the mold cavity of the product through the injection channel, thereby minimizing the probability of cold glue entering the mold cavity.

[0004] The technical solution adopted by this utility model to solve its problem is:

[0005] An injection joint for a mold includes an injection head, the injection head having an injection channel and a receiving groove, the injection channel being in communication with the receiving groove; the injection channel having an inlet and an outlet, the inlet being disposed opposite to the receiving groove, and the outlet being connected to the outside.

[0006] Furthermore, it also includes a glue-receiving column, which is vertically disposed at the bottom of the injection molding process and is positioned opposite to the inlet. A glue-receiving groove is formed within the glue-receiving column, and the glue-receiving groove has an inlet that communicates with the injection molding flow channel.

[0007] Furthermore, the outlet is provided with a nozzle, the nozzle having a jet channel and a jet port, the jet port being connected to the jet channel, and the jet channel being connected to the outlet.

[0008] Furthermore, the inner diameter of the jet channel is set to decrease in the direction away from the injection flow channel.

[0009] Furthermore, the outlet is provided in multiple locations, and each of the multiple outlets is provided with a nozzle.

[0010] Furthermore, the top of the injection head is provided with a connecting groove, which extends circumferentially along the inlet.

[0011] An insulating sheet processing mold includes a machine body and an injection head for the mold, wherein the injection head is installed in the machine body.

[0012] Furthermore, the machine body is provided with an injection port, which is connected to the injection head.

[0013] In summary, the injection joint and insulating sheet processing mold provided by this utility model have the following technical effects: In specific use, the nozzle of the injection molding machine extends into the machine body and connects with the inlet of the injection head. Since the injection head has an injection flow channel and a glue receiving groove, the cold glue at the front of the injection nozzle can be injected into the glue receiving groove first during the injection process. Then, the hot plastic fluid with a higher temperature enters the mold cavity of the product through the injection flow channel, thereby minimizing the probability of cold glue entering the mold cavity. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0015] Figure 2 This is a cross-sectional view of the structure of Embodiment 1 of this utility model;

[0016] Figure 3 This is a structural schematic diagram of Embodiment 2 of the present invention.

[0017] The meanings of the reference numerals in the attached figures are as follows:

[0018] 10. Injection head; 11. Injection runner; 111. Inlet; 12. Glue receiving column; 121. Glue receiving groove; 13. Nozzle; 131. Injection port; 132. Injection channel; 14. Connecting groove; 20. Machine body; 21. Injection port. Detailed Implementation

[0019] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0020] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0022] Example 1,

[0023] See Figures 1 to 2 This utility model discloses an injection joint for a mold, including an injection head 10. The injection head 10 has an injection flow channel 11 and a glue receiving groove 121. The injection flow channel 11 and the glue receiving groove 121 are connected. The injection flow channel 11 has an inlet 111 and an outlet. The inlet 111 and the glue receiving groove 121 are arranged opposite to each other, and the outlet is connected to the outside.

[0024] Based on the above structure, during assembly, a pipe or groove is integrally formed inside the injection head 10, forming an injection flow channel 11 and a receiving groove 121. The receiving groove 121 is connected to the injection flow channel 11. Specifically, the receiving groove 121 is concave relative to the injection flow channel 11, so that the receiving groove 121 is lower than the injection flow channel 11. The receiving groove 121 is positioned opposite to the inlet 111 of the injection flow channel 11. In this way, the thermoplastic fluid introduced through the inlet 111 will first enter the receiving groove 121, and then the other thermoplastic fluid will be discharged from the outlet of the injection flow channel 11.

[0025] Specifically, during the injection molding of workpieces in existing molds, the thermoplastic fluid at the front of the injection nozzle of the injection molding machine usually generates a small amount of cold glue during the product cooling stage. The cold glue will be injected out in the next injection cycle. Since the product is very thin, as long as a little bit of cold glue enters the mold cavity of the product, it will cause blockage and produce the defect of incomplete injection.

[0026] Therefore, when the injection connector in this embodiment is applied to the processing mold, during assembly, the injection head 10 is installed inside the machine body 20. The inlet 111 of the injection channel 11 is connected to the injection port 21 on the machine body 20, and the outlet is connected to the mold cavity of the product. During injection, the nozzle of the injection molding machine extends into the machine body 20 and connects with the inlet 111, so that the thermoplastic fluid discharged from the injection molding machine can be introduced into the injection channel 11. Since the inlet 111 is arranged opposite to the glue receiving groove 121 (i.e., glue receiving groove), The groove 121 is located directly below the inlet 111, and the receiving groove 121 is recessed relative to the injection runner 11 and is lower than the bottom wall of the injection runner 11. This allows the cold plastic at the front of the injection nozzle of the injection molding machine to enter the receiving groove 121 under the action of gravity after being discharged. After that, the continuously injected thermoplastic fluid overflows into the injection runner 11 after flowing into the receiving groove 121 and continues to flow to the outlet. Then it flows into the mold cavity of the product to complete the injection molding operation.

[0027] During this process, the cold glue at the front of the injection nozzle of the injection molding machine will first flow into the glue receiving groove 121 under the action of gravity. Since the cold glue is not easy to flow, it will settle at the bottom of the glue receiving groove 121 after entering it, and it will not flow directly into the injection runner 11. This avoids the cold glue from entering the injection runner 11 after being injected from the nozzle and entering the mold cavity of the product from the outlet, reducing the probability of the cold glue entering the mold cavity of the product, preventing the mold cavity from being blocked and causing defects such as incomplete injection, and indirectly improving the product injection molding qualification rate.

[0028] It should be noted that the glue receiving groove 121 and the injection head 10 can also be independent structures. During assembly, the injection flow channel 11 can be integrally formed inside the injection head 10, or it can be formed by setting a conduit inside the injection head 10. The glue receiving groove 121 can be formed by setting a columnar or tubular structure at the bottom of the injection head 10, forming the glue receiving groove 121 through the channel inside the columnar or tubular structure, and placing the glue receiving groove 121 directly below the inlet 111 of the injection flow channel 11. This allows the cold glue from the front of the injection nozzle to fall directly into the glue receiving groove 121 and settle under gravity when it is injected through the inlet 111, ensuring that the cold glue does not easily enter the interior of the injection flow channel 11.

[0029] Furthermore, it also includes a glue receiving column 12, which is vertically disposed at the bottom of the injection molding process and is positioned opposite to the inlet 111. A glue receiving groove 121 is formed inside the glue receiving column 12, and the glue receiving groove 121 has an inlet that communicates with the injection molding channel 11.

[0030] Specifically, in this embodiment, the receiving groove 121 is formed inside the receiving column 12. During assembly, the receiving column 12 is vertically positioned at the bottom of the injection head 10 and opposite to the inlet 111, so that the inlet of the receiving groove 121 is opposite to the inlet 111 and is concave relative to the injection channel 11. Thus, during the injection process, the cold glue from the front of the injection nozzle can be vertically inserted into the bottom of the receiving groove 121 after being introduced through the inlet 111. Since the receiving column 12 is perpendicular to the injection head 10, the receiving groove 121 is perpendicular to the bottom of the injection channel 11. This results in the direction of gravity acting on the cold glue after injection being perpendicular to the direction it needs to flow. Without external force, it is difficult for the cold glue to overcome gravity and flow upward along the groove wall or laterally along the bottom of the groove. This makes it difficult for the cold glue to flow out of the receiving groove 121 after it sinks into it, thus reducing the risk of cold glue entering the injection channel 11.

[0031] It should be noted that the glue-receiving column 12 can be connected to the injection head 10 by gluing or welding.

[0032] Furthermore, a nozzle 13 is provided at the outlet, the nozzle 13 having a jet channel 132 and a jet port 131, the jet port 131 being connected to the jet channel 132, and the jet channel 132 being connected to the outlet.

[0033] Specifically, if there were no nozzle 13 to discharge the thermoplastic fluid, and the outlet were directly connected to the mold cavity of the product, the thermoplastic fluid might solidify rapidly at the outlet of the injection runner 11 due to the temperature drop, causing blockage of the injection runner 11 and affecting the continuity and stability of the injection process. Therefore, in this embodiment, by setting a nozzle 13 at the outlet, the fluid in the injection runner 11 can be discharged into the mold cavity of the product through the injection port 131 at the injection channel 132. Usually, the injection channel 132 of the nozzle 13 is optimized to reduce the resistance of the fluid during the flow process, while ensuring that the fluid can flow evenly and stably. This design helps to reduce the residence time of the fluid in the nozzle 13 and reduce the risk of thermoplastic fluid solidification.

[0034] In addition, the nozzle 13 usually has a certain length, which makes the jet channel 132 have a certain length. The appropriate length can ensure that the fluid flows at an appropriate speed in the jet channel 132, thus enabling precise control of the amount of plastic injected into the mold cavity of the product, effectively delivering the thermoplastic fluid to the mold cavity, and maintaining its molten state in the jet channel 132 to prevent the plastic from solidifying.

[0035] Preferably, the nozzle 13 can be made of high temperature and corrosion resistant materials, such as stainless steel, alloy steel or special ceramic materials.

[0036] More specifically, the inner diameter of the jet channel 132 decreases in the direction away from the injection runner 11, making the jet channel 132 tapered. That is, the jet channel 132 gradually narrows from the inlet to the jet outlet 131. According to the principles of fluid dynamics, this design can accelerate the flow of fluid. When the thermoplastic fluid passes through the tapered runner, its speed will gradually increase, which helps the thermoplastic fluid to fill the mold cavity more quickly.

[0037] In addition, the tapered flow channel design helps reduce pressure loss of the fluid during the flow process. Due to the gradual reduction of the cross-section of the jet channel 132, the fluid can maintain a high pressure during flow, thereby more effectively pushing the thermoplastic fluid into the mold cavity.

[0038] Furthermore, the aforementioned outlets are provided in multiple locations, each equipped with a nozzle 13. This allows the outlets to connect with the mold cavities of multiple products, enabling the simultaneous introduction of thermoplastic fluid into the mold cavities of multiple products and improving product production efficiency.

[0039] Furthermore, a connecting groove 14 is provided on the top of the injection head 10, and the connecting groove 14 is extended circumferentially along the inlet 111.

[0040] Specifically, since the nozzle of an injection molding machine is usually arc-shaped or conical, in this embodiment, the top of the injection head 10 is provided with a connecting groove 14, and the connecting groove 14 extends circumferentially along the inlet 111 so as to connect the nozzle of the injection molding machine through the connecting groove 14, so that it can match the shape of the nozzle, making it less likely for the nozzle of the injection molding machine to shake during the injection process, thus ensuring the stability of the injection process.

[0041] It should be noted that the shape of the connecting groove 14 matches the shape of the injection molding machine nozzle, making the connection between the two more tight.

[0042] Example 2,

[0043] See Figures 1 to 3 An insulating sheet processing mold includes a body 20 and an injection joint of the mold in Embodiment 1, wherein the injection head 10 is installed inside the body 20.

[0044] Specifically, when the injection joint in this embodiment is applied to the mold for processing insulating sheets, during assembly, the injection head 10 is installed inside the machine body 20. The inlet 111 of the injection channel 11 is connected to the injection port 21 on the machine body 20, and the outlet is connected to the mold cavity of the product. During injection, the nozzle of the injection molding machine extends into the machine body 20 and connects with the inlet 111, so that the thermoplastic fluid discharged by the injection molding machine can be introduced into the injection channel 11. Since the inlet 111 and the glue receiving groove 121 are opposite to each other (that is, the glue receiving groove 121 is located directly below the inlet 111), the cold glue at the front of the nozzle of the injection molding machine can directly enter the glue receiving groove 121 under the action of gravity after being discharged. After that, the continuously injected thermoplastic fluid can first flow into the glue receiving groove 121 and then overflow into the injection channel 11 and continue to flow to the outlet, and then flow into the mold cavity of the product to complete the injection operation.

[0045] During this process, the cold glue at the front of the injection nozzle of the injection molding machine will first flow into the glue receiving groove 121 under the action of gravity. Since the cold glue is not easy to flow, it will settle at the bottom of the glue receiving groove 121 after entering it, and it will not flow directly into the injection runner 11. This avoids the cold glue from entering the injection runner 11 after being injected from the nozzle and entering the mold cavity of the product from the outlet, reducing the probability of the cold glue entering the mold cavity of the product, preventing the mold cavity from being blocked and causing defects such as incomplete injection, and indirectly improving the product injection molding qualification rate.

[0046] More specifically, by providing an injection port 21 on the machine body 20 and connecting the injection port 21 to the injection head 10, the nozzle of the injection molding machine can be directly connected to the inlet 111 of the injection head 10 through the injection port 21.

[0047] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. An injection joint for a mold, characterized in that, The device includes an injection head, which has an injection channel and a glue receiving groove, the injection channel being in communication with the glue receiving groove; the injection channel has an inlet and an outlet, the inlet being opposite to the glue receiving groove, and the outlet being connected to the outside; It also includes a receiving column, which is vertically disposed at the bottom of the injection channel and opposite to the inlet. A receiving groove is formed in the receiving column and has an inlet that communicates with the injection channel. The inlet is used to guide cold glue into the receiving groove under its own gravity.

2. The injection joint of the mold as described in claim 1, characterized in that, The outlet is provided with a nozzle, the nozzle having a jet channel and a jet port, the jet port being connected to the jet channel, and the jet channel being connected to the outlet.

3. The injection joint of the mold as described in claim 2, characterized in that, The inner diameter of the jet channel decreases in the direction away from the injection flow channel.

4. The injection joint as described in any one of claims 2-3, characterized in that, The outlet is provided in multiple locations, and each of the multiple outlets is provided with a nozzle.

5. The injection joint of the mold as described in claim 1, characterized in that, The top of the injection head is provided with a connecting groove, which extends circumferentially along the inlet.

6. A mold for processing insulating sheets, characterized in that, It includes a body and an injection joint for a mold as described in any one of claims 1-5, wherein the injection head is mounted in the body.

7. The insulating sheet processing mold as described in claim 6, characterized in that, The machine body is provided with an injection port, which is connected to the injection head.

Images