Positioning structure and injection mold

Abstract

A positioning structure and injection mold, comprising: a mold core, provided with a profiling groove and an exhaust passage, the profiling groove is used for accommodating an insert, and the exhaust passage penetrates through the mold core; a suction cup assembly, comprising a suction cup, the suction cup is arranged at the bottom of the profiling groove, the suction cup is fixedly connected with the mold core, and the suction cup is used for adsorbing the insert; and the exhaust passage is connected with a suction cup pipeline. The utility model discloses a suction cup is fixed on the mold core and an exhaust passage penetrating through the lower mold core is arranged, so that the suction cup can stably adsorb the insert (such as a metal base) before injection, the insert is prevented from loosening or falling off due to vibration during mold clamping or injection, and the positioning precision of the insert in the mold and the injection quality are ensured.

Description

Technical Field

[0001] This utility model relates to the field of injection molding, and in particular to a positioning structure and an injection mold. Background Technology

[0002] Metal inserts may be included in injection-molded products such as automobiles, home appliances, and electronic products to enhance structural strength or facilitate installation. During the production of these products, it is often necessary to pre-place metal parts, functional components, or support components within the mold cavity, achieving integral molding of the plastic and inserts through in-mold injection. However, in current technology, the placement and positioning of inserts mainly rely on manual placement or robotic gripping, with mechanical positioning being the primary method. While this approach can guarantee insert position to some extent, it still presents the following problems: inserts are prone to displacement or even detachment during mold closing or injection molding due to vibration, mold impact, or the scouring effect of molten plastic, leading to product defects or mold damage. Utility Model Content The technical problem to be solved by this utility model is to provide a positioning structure that enables precise positioning of inserts during injection molding and prevents mistaken insertion.

[0003] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A positioning structure, comprising: The mold core is provided with a contour groove and an exhaust channel. The contour groove is used to accommodate the insert, and the exhaust channel passes through the mold core. A suction cup assembly includes a suction cup disposed at the bottom of the contour groove, the suction cup being fixedly connected to the mold core and used to adsorb the insert; The exhaust channel is connected to the suction cup tubing.

[0004] In some embodiments, the positioning groove is provided with a positioning step, which is used to position the insert.

[0005] In some embodiments, a sensor is also included, which is connected to the suction cup and is used to provide feedback on the pressure at which the suction cup is adsorbed.

[0006] In some embodiments, the suction cup assembly further includes a suction cup insert; the suction cup insert is connected to the mold core, one end of the suction cup insert is connected to the suction cup, and the other end is connected to the exhaust channel.

[0007] In some embodiments, the mold core includes a first mold body and a second mold body that can be detachably installed. The contour groove is formed in the first mold body, and the exhaust channel is formed in the second mold body. The first mold body has an installation hole, one end of which is connected to the contour groove and the other end of which is connected to the exhaust channel.

[0008] In some embodiments, the suction cup pin is disposed within the mounting hole.

[0009] In some embodiments, the suction cup assembly further includes an air tube disposed within the exhaust channel.

[0010] In some embodiments, the suction cup assembly further includes an air intake connector connected to the end of the exhaust channel away from the suction cup pin.

[0011] In some embodiments, a control center connected to the sensor is also included, which is also communicatively connected to the mold closing mechanism of the injection mold.

[0012] An injection mold includes an upper mold, a lower mold, and a positioning structure, wherein the mold core is connected to the lower mold.

[0013] The beneficial effects of this utility model are as follows: It provides a positioning structure and injection mold. By setting a contour groove in the mold core to accommodate the insert and arranging a suction cup at the bottom of the contour groove, and at the same time, a venting channel is passed through the mold core and connected to the suction cup pipeline, so as to achieve dual fixation of the insert: on the one hand, the geometric constraint of the contour groove provides mechanical limit, and on the other hand, the suction cup provides vacuum adsorption force. The contour groove is used to fix the insert to achieve the effect of preventing fooling, and at the same time, it effectively avoids the insert from loosening or falling off due to vibration or molten material impact during the injection molding process, so as to ensure the positioning accuracy and molding quality of the insert. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of an injection mold used in one of the embodiments; Figure 2 for Figure 1 A magnified view of a portion of the image; Figure 3 This is a top view of an injection mold in one of the embodiments; Figure 4 for Figure 3 BB (sectional view); Figure 5 This is a schematic diagram of a positioning structure; Label Explanation: 1. Injection mold; 11. Mold core; 111. First mold body; 112. Second mold body; 113. Mounting hole; 12. Contouring groove; 13. Positioning step; 2. Suction cup assembly; 21. Suction cup; 22. Exhaust channel; 221. Air pipe; 23. Suction cup insert; 24. Suction connector; 3. Insert. Detailed Implementation

[0015] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0016] A positioning structure, comprising: The mold core 11 is provided with a contour groove 12 and an exhaust channel 22. The contour groove 12 is used to accommodate the insert 3, and the exhaust channel 22 passes through the mold core 11. The suction cup assembly 2 includes a suction cup 21, which is disposed at the bottom of the contour groove 12. The suction cup 21 is fixedly connected to the mold core 11 and is used to adsorb the insert 3. The exhaust channel 22 is connected to the suction cup 21 via a pipe.

[0017] As can be seen from the above description, by setting a contour groove 12 in the mold core 11 to accommodate the insert 3, and arranging a suction cup 21 at the bottom of the contour groove 12, and at the same time, passing through an exhaust channel 22 in the mold core 11 and connecting it to the suction cup 21, a dual fixation of the insert 3 is achieved: on the one hand, the geometric constraint of the contour groove 12 provides mechanical limiting, and on the other hand, the suction cup 21 provides vacuum adsorption force. The contour groove 12 is used to fix the insert 3 to achieve the effect of preventing fooling, and at the same time, it effectively prevents the insert 3 from loosening or falling off due to vibration or molten material impact during the injection molding process, ensuring the positioning accuracy and molding quality of the insert 3.

[0018] Contouring grooves are used in the injection molding of products to integrally mold inserts with the injection molded body.

[0019] In some embodiments, the positioning groove is provided with a positioning step 13, which is used to position the insert 3.

[0020] As can be seen from the above description, by setting the positioning step 13 in the positioning groove, the insert 3 can be accurately limited in the height direction, thereby avoiding the positional displacement of the insert 3 during mold closing and injection molding, and further improving the reliability of the positioning of the insert 3 and the consistency of the product.

[0021] In some embodiments, a sensor is also included, which is connected to the suction cup 21 and is used to provide feedback on the pressure at which the suction cup 21 adsorbs.

[0022] As described above, by setting a sensor at the suction cup 21 to provide feedback on the adsorption pressure, it is possible to detect in real time whether the insert 3 is stably adsorbed, thereby achieving a foolproof function and preventing accidental mold closure when the insert 3 is not placed or the adsorption force is insufficient, thus improving the safety and stability of the production process. Preferably, the sensor is a vacuum sensor. When a vacuum sensor is selected, it can accurately monitor the vacuum level of the suction cup 21 and promptly reflect whether the adsorption is reliable. Vacuum sensors have the advantages of fast response and high sensitivity, and can capture changes in the adsorption state of the insert 3 in real time, ensuring the efficient execution of the mold's error prevention and protection functions.

[0023] In some embodiments, the suction cup assembly 2 further includes a suction cup insert 23; the suction cup insert 23 is connected to the mold core 11, one end of the suction cup insert 23 is connected to the suction cup 21, and the other end is connected to the exhaust channel 22.

[0024] As can be seen from the above description, by adding a suction cup insert 23 to the suction cup assembly 2, the suction cup 21 can be reliably connected to the exhaust channel 22 through the insert, which not only ensures the stability of the suction force of the suction cup 21, but also improves the air passage sealing performance. At the same time, the insert structure facilitates mold processing and maintenance, and reduces the risk of air leakage.

[0025] In some embodiments, the mold core 11 includes a first mold body 111 and a second mold body 112 that can be detachably installed. The contour groove 12 is formed in the first mold body 111, and the exhaust channel 22 is formed in the second mold body 112. The first mold body 111 is provided with a mounting hole 113, one end of which is connected to the contour groove 12 and the other end is connected to the exhaust channel 22.

[0026] As described above, by dividing the mold core 11 into a first mold body 111 and a second mold body 112, forming a contour groove 12 and an exhaust channel 22 respectively, and by providing mounting holes 113 on the first mold body 111, the suction cup 21 and the exhaust channel 22 can be assembled and connected in a modular manner. This split design facilitates mold disassembly and maintenance, and the overall structure is not affected when replacing parts, thus improving the mold's adaptability and lifespan. Furthermore, when different shapes of products need to be injection molded, only the first mold body 111 needs to be replaced, thus adapting to different products (insertions 3 and injection bodies) without replacing the entire mold, improving adaptability. Specifically, the first mold body 111 and the second mold body 112 can be fixedly connected by screws.

[0027] In some embodiments, the suction cup insert 23 is disposed within the mounting hole 113.

[0028] As can be seen from the above description, by arranging the suction cup insert 23 in the mounting hole 113, a compact connection structure between the suction cup 21 and the exhaust channel 22 is achieved, which simplifies the internal pipeline layout of the mold, reduces the processing complexity, and improves the stability and reliability of the connection.

[0029] In some embodiments, the suction cup assembly 2 further includes an air tube 221 disposed within the exhaust channel 22.

[0030] As described above, by providing an air pipe 221 within the exhaust channel 22, a highly efficient air passage can be established between the suction cup 21 and the external vacuum system, improving vacuum transmission efficiency and adsorption response speed, and ensuring stable adsorption even in injection molding environments with fast production cycles. In other embodiments, the air pipe 221 can also be provided as a channel on the mold core 11.

[0031] In some embodiments, the suction cup assembly 2 further includes a suction connector 24 connected to the end of the exhaust channel 22 away from the suction cup pin 23.

[0032] As described above, by providing a suction connector 24 at the end of the exhaust channel 22, the mold can be quickly connected to an external vacuum source or vacuum generator, enabling flexible installation and disassembly and improving the mold's versatility in different production lines and equipment. Preferably, when the suction cup assembly 2 is equipped with an air pipe 221, the suction connector 24 is connected to the air pipe 221.

[0033] In some embodiments, a control center connected to the sensor is also included, which is also communicatively connected to the mold closing mechanism of the injection mold 1.

[0034] As can be seen from the above description, by establishing communication between the sensor and the control center and connecting the control center to the mold closing mechanism, the mold closing can be stopped immediately when an adsorption abnormality is detected, thus avoiding mold clamping, mold damage, or product scrap caused by the insertion part 3 falling off, which significantly improves the safety and reliability of the injection molding process.

[0035] Preferably, when the sensor detects that the suction cup 21 fails to stably adsorb the insert 3 or loses its adsorption force during the mold closing process, the control center controls the injection mold 1 to stop closing the mold.

[0036] An injection mold 1 includes an upper mold, a lower mold, and the aforementioned positioning structure, wherein the mold core 11 is connected to the lower mold.

[0037] As can be seen from the above description, by combining the above positioning structure with the injection mold 1, an integrated solution including the upper mold, lower mold and insert 3 positioning system is formed, realizing automatic insert 3 positioning and intelligent detection in the injection molding process. This not only improves the molding quality and production stability of insert 3, but also reduces manual intervention and enhances the intelligence level and applicability of the injection mold 1.

[0038] In some embodiments, a vacuum generator is included, which is connected to the suction connector 24 via a conduit.

[0039] As described above, connecting the vacuum generator to the suction connector 24 provides a continuous and stable vacuum environment for the suction cup 21, ensuring long-term reliable suction force. The vacuum generator, in conjunction with the mold, not only achieves stable positioning of the insert 3 within the mold but also, in conjunction with the sensor, provides a foolproof function, resulting in a comprehensive effect of intelligent, automated, and safe production.

[0040] The embodiments of this utility model are as follows: This solution provides a positioning structure and an injection mold 1 containing the positioning structure.

[0041] The positioning structure includes a mold core 11, inside which are a contour groove 12 and an exhaust channel 22. The contour groove 12 is used to accommodate the insert 3 to be injection molded and matches the shape of the insert 3 in terms of geometry, thereby mechanically limiting the insert 3. The exhaust channel 22 penetrates through the mold core 11, forming an air passage with the suction cup assembly 2.

[0042] A suction cup assembly 2 is provided at the bottom of the contour groove 12. The suction cup 21 is fixedly connected to the mold core 11, with its adsorption surface facing the insert 3. The insert 3 is adsorbed through vacuum. The contour groove 12 provides geometric constraints, and the suction cup 21 provides vacuum adsorption force. The combination of the two achieves double fixation of the insert 3, thereby effectively preventing the insert 3 from loosening or shifting under mold closing or molten material impact.

[0043] The contour groove 12 is provided with a positioning step 13. When the insert 3 is placed, it can be locked in the positioning step 13, thereby forming a reliable limit in the height direction, preventing the insert 3 from floating or sinking during the injection molding process, and ensuring molding accuracy and product consistency.

[0044] To achieve intelligent monitoring, a sensor, preferably a vacuum sensor, is installed on the suction cup 21. This sensor is used to detect the vacuum level of the suction cup 21 in real time, and can accurately provide feedback on whether the insert 3 is stably adsorbed. When adsorption is abnormal, the sensor can immediately output a signal to monitor and prevent mistakenly control the placement status of the insert 3.

[0045] The suction cup assembly 2 further includes a suction cup insert 23, which is connected to the mold core 11. One end of the suction cup insert 23 is connected to the suction cup 21, and the other end is connected to the exhaust channel 22. Through the setting of the suction cup insert 23, the suction cup 21 and the exhaust channel 22 form a reliable sealed passage, which not only enhances the adsorption stability but also facilitates processing and maintenance.

[0046] The mold core 11 adopts a split structure, which is detachably assembled from a first mold body 111 and a second mold body 112. A contour groove 12 is formed within the first mold body 111, and an exhaust channel 22 is formed within the second mold body 112. The first mold body 111 has a mounting hole 113, one end of which connects to the contour groove 12, and the other end connects to the exhaust channel 22. A suction cup insert 23 is installed within this mounting hole 113, achieving a compact connection between the suction cup 21 and the exhaust channel 22. Through this modular design, when different shaped inserts 3 need to be adapted, only the first mold body 111 needs to be replaced, avoiding the need to replace the entire mold, thus improving the mold's adaptability and economy.

[0047] An air pipe 221 is installed inside the exhaust channel 22, passing through the mold core 11 and connecting to the external vacuum system. This improves the air transmission efficiency and response speed, enabling the suction cup 21 to maintain stable adsorption even during high-cycle injection molding production. A suction connector 24 is installed at the end of the exhaust channel 22 for quick docking with an external vacuum generator, ensuring a continuous and stable vacuum environment for the suction cup 21, facilitating disassembly and maintenance.

[0048] The sensor is electrically connected to the control center, which is also connected to the mold closing mechanism of the injection mold 1. When it is detected that the insert 3 is not effectively adsorbed or the adsorption force is lost during the mold closing process, the control center immediately issues a stop command to the mold closing mechanism, thereby avoiding mold clamping, mold damage or product scrap caused by the insert 3 falling off, and significantly improving the safety and reliability of production.

[0049] In the complete application, the injection mold 1 includes an upper mold, a lower mold, and the aforementioned positioning structure. The mold core 11 is connected to the lower mold, forming an integrated injection mold 1 that includes the upper mold, lower mold, and insert 3 positioning system. When the mold is in operation, the suction cup 21 provides a stable negative pressure through a vacuum generator. The insert 3 is fixed by the triple action of the contour groove 12, the positioning step 13, and the suction cup 21, and is monitored and controlled in real time by sensors and the control center to ensure the safety and stability of the mold closing and injection process. In summary, the positioning structure and injection mold provided by this utility model achieve dual positioning of the insert by setting a suction cup and a through-hole exhaust channel on the mold core, combined with the mechanical limiting of the positioning groove and positioning step. This ensures that the insert maintains a stable position before and during injection molding, preventing loosening or displacement due to vibration. By introducing suction cup inserts, suction connectors, and connections to a vacuum generator in the suction cup pipeline, the airtightness of the suction passage and the long-term reliability of the suction force are ensured, thereby improving the stability and maintainability of the mold operation. Furthermore, by setting a vacuum sensor at the suction cup and linking it with the control center and mold closing mechanism, when the control center detects that the insert has not been suctioned or the suction force has been lost, it can promptly prevent mold closing or immediately stop the machine, forming an effective foolproof and protection mechanism. This avoids mold clamping, mold damage, or product scrap caused by missing or detached inserts, ensuring product quality and production safety.

[0050] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A positioning structure, characterized in that: include: The mold core is provided with a contour groove and an exhaust channel. The contour groove is used to accommodate the insert, and the exhaust channel passes through the mold core. A suction cup assembly includes a suction cup disposed at the bottom of the contour groove, the suction cup being fixedly connected to the mold core and used to adsorb the insert; The exhaust channel is connected to the suction cup tubing.

2. The positioning structure according to claim 1, characterized in that: The contour groove is provided with a positioning step, which is used to position the insert.

3. The positioning structure according to claim 1, characterized in that: It also includes a sensor connected to the suction cup and used to provide feedback on the pressure of the suction cup adsorption.

4. The positioning structure according to claim 1, characterized in that: The suction cup assembly also includes a suction cup insert; the suction cup insert is connected to the mold core, one end of the suction cup insert is connected to the suction cup, and the other end is connected to the exhaust channel.

5. A positioning structure according to claim 4, characterized in that: The mold core includes a first mold body and a second mold body that can be detachably installed. The contour groove is formed in the first mold body, and the exhaust channel is formed in the second mold body. The first mold body has an installation hole, one end of which is connected to the contour groove and the other end is connected to the exhaust channel.

6. A positioning structure according to claim 5, characterized in that: The suction cup pin is disposed within the mounting hole.

7. A positioning structure according to claim 6, characterized in that: The suction cup assembly also includes an air tube, which is disposed within the exhaust channel.

8. A positioning structure according to claim 4, characterized in that: The suction cup assembly also includes a suction connector, which is connected to the end of the exhaust channel away from the suction cup pin.

9. A positioning structure according to claim 3, characterized in that: It also includes a control center connected to the sensor, which is also communicatively connected to the mold closing mechanism of the injection mold.

10. An injection mold, characterized in that: The injection mold includes an upper mold, a lower mold, and a positioning structure as described in any one of claims 1 to 9, wherein the mold core is connected to the lower mold.

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