Leakage early warning type injection mold

Abstract

The invention relates to the technical field of injection molds, in particular to a leakage early warning type injection mold which comprises a fixed mold body and a movable mold body, a lower cooling groove is formed in the fixed mold body, an upper cooling groove is formed in the movable mold body, and a positioning communicating pipe communicating with the interior of the upper cooling groove is inserted into the inner top of the lower cooling groove. A partition plate is fixed to the inner wall of the lower cooling groove, a water inlet pipe and a water outlet pipe are inserted into the two side walls of the fixed mold correspondingly, and protective sleeves are fixed to the outer walls of the water inlet pipe and the water outlet pipe correspondingly. The device has the advantages that after leakage occurs, leaked water flow enters the water storage tank through the water receiving pipe, so that the water flow is recycled in time, starting switches of the warning lamp and the water pump are not short-circuited any more, the warning lamp and the water pump are started, and the warning lamp flickers to play a warning role; and the water pump pumps water flow in the water storage tank and injects the water flow into the water return pipe, so that the water flow is recycled and transferred in time, and leakage pollution is avoided.

Description

Technical Field

[0001] This invention relates to the field of injection mold technology, and in particular to a leakage warning injection mold. Background Technology

[0002] Injection molding, also known as injection molding, is a molding method that combines injection and molding. The advantages of injection molding are fast production speed, high efficiency, automated operation, a wide variety of colors and shapes, shapes that can be simple or complex, sizes that can be large or small, precise product dimensions, easy product updates and replacements, and the ability to produce complex-shaped parts. Injection molding is suitable for mass production and molding processing fields such as complex-shaped products.

[0003] In injection mold cooling systems, water pipes and nozzles are often connected by threaded seals. However, due to the long-term high-frequency temperature changes in the cooling system, gaps inevitably appear at the connection between the water pipes and nozzles due to thermal expansion and contraction. This can easily cause the coolant in the cooling system to leak, which can contaminate the mold or product and reduce the cooling performance of the system. Furthermore, since the water pipes and nozzles are located inside the mold, leaks cannot be observed or detected immediately, often resulting in a large number of products experiencing a decline in quality. Summary of the Invention

[0004] The purpose of this invention is to solve the problem of poor mold leakage handling in the prior art, and to propose a leakage early warning injection mold.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a leakage warning injection mold, comprising a fixed mold and a moving mold, wherein a cooling groove is provided inside the fixed mold, and an upper cooling groove is provided inside the moving mold; a positioning connecting pipe communicating with the interior of the upper cooling groove is inserted into the top of the cooling groove; a partition is fixed to the inner wall of the cooling groove; a water inlet pipe and a water outlet pipe are respectively inserted into the two side walls of the fixed mold; a protective sleeve is fixed to the outer wall of both the water inlet pipe and the water outlet pipe; a water injection pipe and a water return pipe are installed on the inner wall of both the water inlet pipe and the water outlet pipe; a buffer warning mechanism is provided on the inner wall of the water inlet pipe; and a warning activation mechanism is provided inside the protective sleeve.

[0006] In the aforementioned leakage warning injection mold, the inner wall of the upper cooling groove is provided with multiple heat-conducting fins, and the inner wall of the lower cooling groove is provided with multiple supporting heat-conducting fins.

[0007] In the aforementioned leakage warning injection mold, the buffer warning mechanism includes a mounting plate fixed to the inner wall of the water inlet pipe, a rotating shaft rotatably connected to the side wall of the mounting plate, and a rotating blade fixed to the side wall of the rotating shaft.

[0008] In the aforementioned leakage warning injection mold, a vibration spring is fixed to the end of the rotating blade, and a bell is fixed to the end of the vibration spring.

[0009] In the aforementioned leakage warning injection mold, a sealing half-sleeve is fixed to the lower inner wall of the protective sleeve, a water storage tank is fixed to the side wall of the fixed mold, a water inlet pipe connected to the inside of the protective sleeve is inserted into the inner wall of the water storage tank, a water pump is installed on the inner wall of the water storage tank, a transfer pipe is installed at the outlet of the water pump, and the transfer pipe is connected to the return water pipe.

[0010] In the aforementioned leakage warning injection mold, the warning activation mechanism includes a sliding cavity formed in the inner wall of the protective sleeve. The inner wall of the sliding cavity is connected to a slider via a return spring. The slider is slidably and sealed to the inner wall of the sliding cavity. The side walls of the water inlet pipe and the water return pipe are each fitted with a connecting pipe that communicates with the inside of the sliding cavity.

[0011] In the aforementioned leakage warning injection mold, a drive shaft is rotatably connected through the side wall of the sliding cavity. A junction plate is fixed to the side wall of the drive shaft. A storage groove is provided on the side wall of the drive shaft. A sliding rod is connected to the inner wall of the storage groove through a connecting spring. A locking block is fixed to the end of the sliding rod. The locking block is a permanent magnet. Both the sliding rod and the locking block have square cross-sections.

[0012] In the aforementioned leakage warning injection mold, the side walls of the water injection pipe and the water return pipe are sealed and rotatably connected with a rotating rod. The end of the rotating rod is fixed with a rotating plate. The side wall of the rotating rod is provided with a sliding groove. The locking block is slidably connected to the inner wall of the sliding groove. A warning light is installed at the upper end of the protective sleeve. A whistle is inserted into the side wall of the sliding cavity.

[0013] Compared with existing technologies, the advantages of this invention are:

[0014] 1. In this invention, the moving mold and the fixed mold are connected by a positioning connector, thereby ensuring the smooth progress of the mold closing process, reducing the difficulty of mold closing, and facilitating the rapid progress of the subsequent injection molding process;

[0015] 2. In this invention, the presence of the heat-conducting sheet can improve the heat transfer efficiency without affecting the strength of the moving mold, thereby greatly improving the cooling speed. The presence of the lower supporting heat sheet can effectively support the fixed mold, so that the lower part of the fixed mold can be effectively cooled while stably supporting the internal material.

[0016] 3. In this invention, when the water flows normally inside the inlet pipe, it will impact the rotating blade, causing the rotating blade to drive the rotating shaft to rotate, thereby reducing the impact force when the water flows into the cooling tank, reducing the impact on the fixed mold during the water circulation process, and greatly improving the service life of the fixed mold.

[0017] 4. In this invention, a whistle is provided. Once a leak occurs, a gap will appear, and airflow will transfer. This will cause the vibration sound waves to spread rapidly with the airflow, so that the outside can feel the internal sound, thus warning of the leak.

[0018] 5. In this invention, after a leak occurs, the leaked water will enter the water storage tank through the water inlet pipe, thereby realizing the timely recovery of the water. The warning light and the water pump start switch are no longer short-circuited, which will cause the warning light and the water pump to start. The warning light will flash to serve as a warning, while the water pump will draw water from inside the water storage tank and inject it into the return water pipe, realizing the timely recovery and transfer of the water and avoiding leakage pollution.

[0019] 6. In this invention, the reciprocating motion of the slider will cause airflow to the whistle, thereby enabling the whistle to produce a whistling sound, thus achieving multiple warning effects and ensuring the purpose of leakage warning and protection. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a leakage early warning injection mold proposed in this invention;

[0021] Figure 2 This is a half-sectional view of a leakage warning injection mold proposed in this invention;

[0022] Figure 3 This is a schematic diagram of the water inlet pipe section of a leakage warning injection mold proposed in this invention;

[0023] Figure 4 This is a schematic diagram of the water outlet pipe section of a leakage warning injection mold proposed in this invention;

[0024] Figure 5 This is a schematic diagram of the rotating rod part of a leakage early warning injection mold proposed in this invention;

[0025] Figure 6 This is a side view of the protective sleeve portion of a leakage warning injection mold proposed in this invention.

[0026] In the diagram: 1. Fixed mold, 2. Moving mold, 3. Cooling tank, 4. Upper cooling tank, 5. Positioning connecting pipe, 6. Heat-conducting plate, 7. Supporting heat plate, 8. Partition plate, 9. Water inlet pipe, 10. Water outlet pipe, 11. Water injection pipe, 12. Water return pipe, 13. Protective sleeve, 14. Sealing half sleeve, 15. Water storage tank, 16. Water inlet pipe, 17. Water pump, 18. Transfer pipe, 19. Mounting plate, 20. Rotating shaft, 21. Rotating blade, 22. Vibrating spring, 23. Bell, 24. Slide cavity, 25. Reset spring, 26. Slider, 27. Connecting pipe, 28. Whistle, 29. Warning light, 30. Rotating rod, 31. Rotating plate, 32. Slide groove, 33. Drive shaft, 34. Storage groove, 35. Connecting spring, 36. Slide rod, 37. Locking block, 38. Connecting board. Detailed Implementation

[0027] The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0028] Example

[0029] Reference Figure 1-6 A leakage warning injection mold includes a fixed mold 1 and a moving mold 2. The fixed mold 1 has a cooling groove 3 inside, and the moving mold 2 has an upper cooling groove 4 inside. A positioning connection pipe 5 that communicates with the inside of the upper cooling groove 4 is inserted into the top of the cooling groove 3. A partition plate 8 is fixed to the inner wall of the cooling groove 3. A water inlet pipe 9 and a water outlet pipe 10 are respectively inserted into the two side walls of the fixed mold 1. A protective sleeve 13 is fixed to the outer wall of both the water inlet pipe 9 and the water outlet pipe 10. A water injection pipe 11 and a water return pipe 12 are installed on the inner wall of both the water inlet pipe 9 and the water outlet pipe 10. A buffer warning mechanism is provided on the inner wall of the water inlet pipe 9, and a warning activation mechanism is provided inside the protective sleeve 13.

[0030] Multiple heat-conducting plates 6 are inserted into the inner wall of the upper cooling groove 4, and multiple supporting heat plates 7 are inserted into the inner wall of the lower cooling groove 3. The heat-conducting plates 6 can better transfer the heat at the center of the moving mold 2 to the upper cooling groove 4 without affecting the strength of the moving mold 2, so that the moving mold 2 can be well cooled and used for a long time. The presence of the supporting heat plates 7 provides support to the bottom of the lower cooling groove 3, avoiding pressure damage to the fixed mold 1 by the injection molding material. The supporting heat plates 7 can also achieve rapid heat conduction, improve the overall cooling efficiency, and at the same time, ensure that the internal material of the fixed mold 1 is fully cooled, avoiding local overheating. This improves the quality of the molded product and greatly extends its service life. The buffer warning mechanism includes a mounting plate 19 fixed to the inner wall of the water inlet pipe 9. A rotating shaft 20 is rotatably connected to the side wall of the mounting plate 19. A rotating blade 21 is fixed to the side wall of the rotating shaft 20. The rotating blade 21 acts as a buffer for the water flow, preventing excessive impact on the fixed mold 1 during the injection process and improving the service life of the fixed mold 1.

[0031] A vibrating spring 22 is fixed to the end of the rotating blade 21, and a bell 23 is fixed to the end of the vibrating spring 22. The bell 23 rotates and shakes to produce a sound. After a leak occurs, the gap can diffuse the intensity of the sound propagating outward, thus serving as a warning.

[0032] A sealing half-sleeve 14 is fixed to the lower inner wall of the protective sleeve 13, and a water storage tank 15 is fixed to the side wall of the fixed mold 1. A water inlet pipe 16 connected to the inside of the protective sleeve 13 is inserted into the inner wall of the water storage tank 15. A water pump 17 is installed on the inner wall of the water storage tank 15, and a transfer pipe 18 is installed at the outlet of the water pump 17. The transfer pipe 18 is connected to the return water pipe 12. The sealing half-sleeve 14 can block the lower area of ​​the protective sleeve 13, so that the leaked water will not overflow directly, and at the same time, it will not block the contact of external airflow. The leaked water will be transferred to the water storage tank 15 for collection in a timely manner through the water inlet pipe 16 to avoid leakage pollution.

[0033] The warning activation mechanism includes a sliding cavity 24 formed in the inner wall of the protective sleeve 13. The inner wall of the sliding cavity 24 is connected to a slider 26 via a return spring 25. The slider 26 is slidably connected to the inner wall of the sliding cavity 24. The side walls of the inlet pipe 9 and the return pipe 12 are each fitted with a guide pipe 27 that communicates with the inside of the sliding cavity 24. One end of the guide pipe 27 is connected to the inside of the sliding cavity 24, and the other end is located at the overlapping position of the inlet pipe 9 and the injection pipe 11, and similarly at the overlapping position of the outlet pipe 10 and the return pipe 12. When there is no leakage, the gap is sealed, the guide pipe 27 is closed, and the slider 26 cannot move because it cannot push the airflow. However, when a leak occurs, a gap will be created, allowing the fluid to transfer, and the slider 26 will be able to move.

[0034] A drive shaft 33 is rotatably connected through the side wall of the slide cavity 24. A junction plate 38 is fixed to the side wall of the drive shaft 33. A storage groove 34 is opened on the side wall of the drive shaft 33. A slide rod 36 is connected to the inner wall of the storage groove 34 through a connecting spring 35. A locking block 37 is fixed to the end of the slide rod 36. The locking block 37 is a permanent magnet. The cross-section of both the slide rod 36 and the locking block 37 is square. When the slider 26 contacts the junction plate 38, the warning light 29 and the water pump 17 will be short-circuited, thus preventing the warning light 29 and the water pump 17 from working properly.

[0035] Both the water inlet pipe 11 and the return pipe 12 are sealed and rotatably connected to a rotating rod 30. A rotating plate 31 is fixed to the end of the rotating rod 30. A sliding groove 32 is opened on the side wall of the rotating rod 30. A locking block 37 is slidably connected to the inner wall of the sliding groove 32. The locking block 37 and the sliding groove 32 match each other. The locking block 37 can slide inside the sliding groove 32 but cannot generate relative rotation. Therefore, when the rotating rod 30 rotates, it can drive the locking block 37 to rotate. Similarly, the sliding rod 36 cannot generate relative rotation with the drive shaft 33. Therefore, the rotating rod 30 can drive the drive shaft 33 to rotate. When the water inlet pipe 11 and the return pipe 12 need to be replaced, the locking block 37 can be separated and disassembled simply by using an external magnet to attract it and reset it. A warning light 29 is installed on the upper end of the protective sleeve 13. A whistle 28 is inserted into the side wall of the sliding cavity 24.

[0036] In this invention, during actual operation, the moving mold 2 and the fixed mold 1 are connected by the positioning connecting pipe 5, thereby ensuring the smooth progress of the mold closing process, reducing the difficulty of mold closing, and facilitating the rapid progress of the subsequent injection molding process.

[0037] After injection molding, cooling water is introduced into the water inlet pipe 9 through the water injection pipe 11, and then transferred to the cooling tank 3 and then to the upper cooling tank 4, so that the cooling water is circulated. Finally, it is transferred from the water outlet pipe 10 to the water return pipe 12 and then flows back to complete the circulation. During the process, the water flow carries away heat to achieve effective cooling. The presence of the heat conduction plate 6 can improve the heat transfer efficiency without affecting the strength of the moving mold 2, which greatly improves the cooling speed. The presence of the lower support heat plate 7 can effectively support the fixed mold 1, so that the lower area of ​​the fixed mold 1 can be effectively cooled while stably supporting the internal material.

[0038] When the water flows normally inside the inlet pipe 9, it will impact the vane 21, causing the vane 21 to drive the shaft 20 to rotate, thereby reducing the impact force when the water flows into the cooling tank 3, reducing the impact on the fixed mold 1 during the water circulation process, and greatly improving the service life of the fixed mold 1.

[0039] Furthermore, the rotation of the blade 21 will drive the bell 23 to rotate, and the bell 23 is connected by the vibrating spring 22. During the rotation, the bell 23 will shake continuously, thereby transmitting vibrational sound waves outward. When there is no water leakage, there is no gap at the connection between the water inlet pipe 9 and the water injection pipe 11, so the sound wave energy is greatly weakened and cannot transmit a substantial warning sound to the outside. However, once a gap appears and there is a water leakage, there will be airflow transfer, which will cause the vibrational sound waves to vibrate and spread rapidly with the airflow, so that the outside can feel the internal sound, thereby warning of the leakage.

[0040] Under normal conditions, after the water injection pipe 11 is installed, the rotating rod 30 will be aligned with the drive shaft 33, so that the locking block 37 will be in contact with the rotating rod 30 under the action of magnetic force. Under the drive of water flow, the rotating plate 31 will drive the rotating rod 30 to rotate, so that the locking block 37 will coincide with the slide groove 32, and the locking block 37 will enter the slide groove 32, thereby enabling the rotation of the rotating rod 30 to drive the rotation of the drive shaft 33.

[0041] After a leak occurs, the leaked water will enter the water storage tank 15 through the water inlet pipe 16, thus achieving timely water recovery. The gap will prevent the end of the guide pipe 27 from being blocked, allowing the slider 26 to slide by pumping out the fluid. This will prevent the slider 26 from obstructing the rotation of the contact plate 38, allowing the drive shaft 33 to drive the contact plate 38 to rotate continuously. This will cause the contact plate 38 to make intermittent contact with the slider 26. When the contact plate 38 separates from the slider 26, the warning light 29 and the start switch of the water pump 17 will no longer be short-circuited, causing the warning light 29 and the water pump 17 to start. The warning light 29 will flash to serve as a warning, while the water pump 17 will draw water from the water storage tank 15 and inject it into the return water pipe 12, achieving timely water recovery and transfer to prevent leakage and pollution.

[0042] Meanwhile, during the reciprocating motion of the slider 26, airflow will occur in the whistle 28, which will enable the whistle 28 to produce a whistling sound, thus achieving multiple warning effects and ensuring the purpose of leakage warning and protection.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A leakage warning injection mold, comprising a fixed mold (1) and a moving mold (2), characterized in that, The fixed mold (1) has a cooling groove (3) inside, the moving mold (2) has an upper cooling groove (4) inside, the top of the cooling groove (3) is fitted with a positioning connection pipe (5) that communicates with the inside of the upper cooling groove (4), the inner wall of the cooling groove (3) is fixed with a partition plate (8), the two side walls of the fixed mold (1) are respectively fitted with a water inlet pipe (9) and a water outlet pipe (10), the outer walls of the water inlet pipe (9) and the water outlet pipe (10) are both fixed with a protective sleeve (13), the inner walls of the water inlet pipe (9) and the water outlet pipe (10) are both fitted with a water injection pipe (11) and a water return pipe (12), the inner wall of the water inlet pipe (9) is provided with a buffer warning mechanism, and the inside of the protective sleeve (13) is provided with a warning activation mechanism.

2. A leakage early warning injection mold according to claim 1, characterized in that, The inner wall of the upper cooling groove (4) is provided with multiple heat-conducting plates (6), and the inner wall of the lower cooling groove (3) is provided with multiple heat-supporting plates (7).

3. A leakage early warning injection mold according to claim 1, characterized in that, The buffer warning mechanism includes a mounting plate (19) fixed to the inner wall of the water inlet pipe (9), a rotating shaft (20) is rotatably connected to the side wall of the mounting plate (19), and a rotating blade (21) is fixed to the side wall of the rotating shaft (20).

4. A leakage early warning injection mold according to claim 3, characterized in that, A vibrating spring (22) is fixed to the end of the blade (21), and a bell (23) is fixed to the end of the vibrating spring (22).

5. A leakage early warning injection mold according to claim 1, characterized in that, A sealing half-sleeve (14) is fixed to the lower inner wall of the protective sleeve (13), and a water storage tank (15) is fixed to the side wall of the fixed mold (1). A water inlet pipe (16) connected to the inside of the protective sleeve (13) is inserted into the inner wall of the water storage tank (15). A water pump (17) is installed on the inner wall of the water storage tank (15). A transfer pipe (18) is installed at the outlet of the water pump (17). The transfer pipe (18) is connected to the return water pipe (12).

6. A leakage early warning injection mold according to claim 1, characterized in that, The warning activation mechanism includes a sliding cavity (24) opened in the inner wall of the protective sleeve (13). The inner wall of the sliding cavity (24) is connected to a slider (26) by a return spring (25). The slider (26) is slidably connected to the inner wall of the sliding cavity (24). The side walls of the water inlet pipe (9) and the water return pipe (12) are each provided with a guide pipe (27) that communicates with the inside of the sliding cavity (24).

7. A leakage early warning injection mold according to claim 6, characterized in that, The side wall of the sliding cavity (24) is rotatably connected to a drive shaft (33). A junction plate (38) is fixed to the side wall of the drive shaft (33). A storage groove (34) is opened on the side wall of the drive shaft (33). A sliding rod (36) is connected to the inner wall of the storage groove (34) through a connecting spring (35). A locking block (37) is fixed to the end of the sliding rod (36). The locking block (37) is a permanent magnet. The cross-section of the sliding rod (36) and the locking block (37) is square.

8. A leakage warning injection mold according to claim 7, characterized in that, The side walls of the water inlet pipe (11) and the return pipe (12) are sealed and rotatably connected to a rotating rod (30). The end of the rotating rod (30) is fixed with a rotating plate (31). The side wall of the rotating rod (30) is provided with a sliding groove (32). The locking block (37) is slidably connected to the inner wall of the sliding groove (32). The upper end of the protective sleeve (13) is equipped with a warning light (29). A whistle (28) is inserted into the side wall of the sliding cavity (24).

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