Cold nozzle structure for cold runner silica gel

Abstract

The utility model relates to the technical field of silica gel processing devices, in particular to a cold nozzle structure for cold runner silica gel, which comprises a cold nozzle structure main body, and a plurality of connecting rods for connecting two sections of cold nozzle structure main bodies are fixedly connected to the side surface of the cold nozzle structure main body. A cold nozzle head is fixedly inserted into one end of the cold nozzle structure main body, a valve needle is slidably inserted into one end of the cold nozzle structure main body, and a feeding pipe is fixedly inserted into one side of the cold nozzle structure main body; the device has the beneficial effects that the gear ring is rotatably mounted on the cold nozzle structure main body, the plurality of scrapers are slidably mounted on the gear ring, and the spring is fixedly connected between each scraper and the gear ring, so that when the motor drives the gear to rotate so as to control the gear ring to rotate, the gear ring can drive the plurality of scrapers to rotate together; and the scraper blade can scrape the uncured liquid silica gel retained on the surface of the cold runner of the cold nozzle structure main body under the action of the spring, so that the utilization rate of the material is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of silica gel processing devices, in particular to a cold nozzle structure for cold runner silica gel. Background Art

[0002] When preparing silicone, in order to better save material loss, the cold nozzle structure and cold runner technology are used to improve material utilization.

[0003] Currently, liquid silicone is injected into a cold nozzle structure through a cold runner and then cooled and molded in the cold nozzle structure.

[0004] However, when continuously injecting liquid silicone, the liquid silicone transfers its own temperature to the cold nozzle structure, causing the cold nozzle structure to heat up, resulting in the liquid silicone solidified in the cold nozzle to gradually increase, causing the material loss rate to gradually increase. For this reason, the utility model proposes a cold nozzle structure for cold runner silicone to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a cold nozzle structure for cold runner silicone to solve the problem proposed in the above background technology that the cold nozzle structure will gradually heat up during continuous injection of liquid silicone, resulting in the gradual increase of material solidified in the cold nozzle and ultimately leading to a gradual increase in material loss rate.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cold nozzle structure for cold runner silicone, the cold nozzle structure for cold runner silicone comprising:

[0007] A cold nozzle structure body, wherein a plurality of connecting rods for connecting two sections of the cold nozzle structure body are fixedly connected to the side of the cold nozzle structure body, a cold nozzle head is plugged and fixed at one end of the cold nozzle structure body, a valve needle is slidably plugged at one end of the cold nozzle structure body, and a feed pipe is plugged and fixed at one side of the cold nozzle structure body;

[0008] A gear ring, which is located on the side of the cold nozzle structure body and is rotatably connected to the cold nozzle structure body. The side of the gear ring is meshed with a gear driven to rotate by a motor. The motor and the cold nozzle structure body are fixedly connected. The gear ring is located on one side of the inner cavity of the cold nozzle structure body and is slidably connected to a plurality of scrapers distributed in a circular array. A spring is fixedly connected between each scraper and the gear ring.

[0009] Preferably, both ends of the gear ring are fixedly connected to a limit seal ring, and a mounting groove No. 1 for rotatably mounting the limit seal ring is provided on the side surface of the cold nozzle structure body.

[0010] Preferably, one side of each of the two first mounting grooves communicates with a water storage cavity for storing water, and the size of the first mounting groove is larger than that of the water storage cavity. One side of the cold nozzle structure body is fixedly connected with a support plate, and the motor is fixedly connected with the support plate.

[0011] Preferably, a plurality of second mounting grooves are formed on one side of the toothed ring. One side of the scraping plate is fixedly connected with a telescopic rod. The telescopic rod and the spring are both located in the inner cavity of the second mounting groove, and the spring is sleeved on the telescopic rod.

[0012] Preferably, grooves are formed at both ends of the toothed ring, and the grooves are located outside the cold nozzle structure body.

[0013] Preferably, the scraping plate is arranged in a triangular prism shape, and the surface of the scraping plate that fits the cold nozzle structure body is arranged as an arc surface. The connecting rod is arranged in a "C" shape.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] In this device, a toothed ring is rotatably installed on the cold nozzle structure body, and a plurality of scraping plates are slidably installed on the toothed ring. A spring is fixedly connected between each scraping plate and the toothed ring. In this way, when the motor drives the gear to rotate to control the rotation of the toothed ring, the toothed ring can drive a plurality of scraping plates to rotate together. The scraping plates will scrape off the uncured liquid silicone remaining on the surface of the cold flow channel of the cold nozzle structure body under the action of the spring, further improving the material utilization rate, and solving the problem that when continuously injecting liquid silicone, the temperature of the cold nozzle structure will gradually rise, resulting in an increasing amount of material solidified in the cold nozzle and ultimately leading to an increasing material loss rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 is a side sectional schematic diagram of the overall structure of the present utility model;

[0018] Figure 3 is a side schematic diagram of the cold nozzle structure body of the present utility model;

[0019] Figure 4 is a side schematic diagram of the toothed ring structure of the present utility model;

[0020] Figure 5 is a side schematic diagram of the scraping plate structure of the present utility model.

[0021] In the figure: 1. cold nozzle structure body; 11. support plate; 12. water storage chamber; 13. No. 1 mounting groove; 2. connecting rod; 3. cold nozzle head; 4. valve needle; 5. gear ring; 51. limit sealing ring; 52. groove; 53. No. 2 mounting groove; 6. gear; 61. motor; 7. feed pipe; 8. scraper; 81. telescopic rod; 9. spring. DETAILED DESCRIPTION

[0022] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] In the description of the present invention, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] For the purpose of simplicity and illustration, the principles of the embodiments are mainly described by reference to examples. In the following description, many specific details are proposed to provide a thorough understanding of the embodiments. However, it is obvious that for those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, known methods and structures are not described in detail to avoid making these embodiments unnecessarily difficult to understand. In addition, all embodiments can be used in combination with each other.

[0026] See also Figures 1 to 5 , the utility model provides a technical solution:

[0027] Embodiment 1, a cold nozzle structure for cold runner silicone, the cold nozzle structure for cold runner silicone includes: a cold nozzle structure body 1.

[0028] Specifically, a plurality of connecting rods 2 for connecting two sections of the cold nozzle structure main body 1 are fixedly connected to the side of the cold nozzle structure main body 1, a cold nozzle head 3 is plugged and fixed at one end of the cold nozzle structure main body 1, a valve needle 4 is slidably plugged at one end of the cold nozzle structure main body 1, and a feed pipe 7 is plugged and fixed at one side of the cold nozzle structure main body 1. The cold nozzle structure main body 1, the cold nozzle head 3, and the valve needle 4 are all existing technologies. The feed pipe 7 allows the silicone rubber to be transported to the cold runner of the inner cavity of the cold nozzle structure main body 1, and then injected into the mold through the injection port;

[0029] Furthermore, the gear ring 5 is located on the side of the cold nozzle structure body 1 and is rotatably connected to the cold nozzle structure body 1. The side of the gear ring 5 is meshed with a gear 6 driven to rotate by a motor 61. The motor 61 is fixedly connected to the cold nozzle structure body 1. The gear ring 5 is located on one side of the inner cavity of the cold nozzle structure body 1 and is slidably connected to a plurality of scrapers 8 distributed in a circular array. A spring 9 is fixedly connected between each scraper 8 and the gear ring 5. When the motor 61 drives the gear 6 to rotate, it will drive the gear ring 5 to rotate together. When the gear ring 5 rotates, it will drive multiple scrapers 8 to rotate together. During the rotation process, the scraper 8 will always fit the surface of the cold nozzle structure body 1 under the action of the spring 9, so that the liquid silicone retained on the surface of the cold runner of the cold nozzle structure body 1 can be scraped off, so that this part of the liquid silicone can flow into the mold before solidification, thereby improving the utilization rate of the material.

[0030] In order to facilitate the installation of the gear ring 5, both ends of the gear ring 5 of the present application are fixedly connected to the limiting sealing ring 51, and the side of the cold nozzle structure body 1 is provided with a No. 1 installation groove 13 for the limiting sealing ring 51 to be rotatably installed. Through the limiting sealing ring 51 and the No. 1 installation groove 13, it can be ensured that the gear ring 5 is rotatably installed on the cold nozzle structure body 1, and at the same time, the gear ring 5 can be prevented from shaking.

[0031] To improve the heat dissipation effect of the main body 1 of the cold nozzle structure, on one side of each of the two first mounting grooves 13 of the present application, there is a water storage cavity 12 for storing water, and the size of the first mounting groove 13 is larger than that of the water storage cavity 12. In this way, the limit sealing ring 51 can seal the water storage cavity 12 to prevent water leakage. On one side of the main body 1 of the cold nozzle structure, there is a fixed connection with a support plate 11, and the motor 61 is fixedly connected to the support plate 11. The support plate 11 can provide an installation space for the motor 61, enabling the gear 6 to mesh better with the gear ring 5. The water stored in the water storage cavity 12 will absorb the temperature of the main body 1 of the cold nozzle structure, making the main body 1 of the cold nozzle structure heated more evenly. At the same time, the gear ring 5 can be made of a material with better heat conduction effect, so that the temperature of the water and the temperature of the main body 1 of the cold nozzle structure can be better guided to the outside, ensuring that the main body 1 of the cold nozzle structure will not overheat during continuous use.

[0032] To facilitate the installation of the scraper 8, on one side of the gear ring 5 of the present application, there are a plurality of second mounting grooves 53. On one side of the scraper 8, there is a fixed connection with a telescopic rod 81. Both the telescopic rod 81 and the spring 9 are located inside the second mounting groove 53, and the spring 9 is sleeved on the telescopic rod 81. The telescopic rod 81 can facilitate the sliding installation of the scraper 8 on the gear ring 5, and the second mounting groove 53 can provide an installation space for the telescopic rod 81 and the spring 9.

[0033] To further improve the heat dissipation effect of the gear ring 5, at both ends of the gear ring 5 of the present application, there are grooves 52. The grooves 52 are located outside the main body 1 of the cold nozzle structure. The grooves 52 can increase the contact area between the gear ring 5 and the air, so that during the rotation of the gear ring 5, the natural wind in the air can better take away the temperature of the gear ring 5.

[0034] To further improve the structure of the present device, the scraper 8 is set in a triangular prism shape, and the surface of the scraper 8 that fits the main body 1 of the cold nozzle structure is set as an arc surface. In this way, the scraper 8 can better scrape off the liquid silicone remaining on the inner surface of the main body 1 of the cold nozzle structure. The connecting rod 2 is set in a "C" shape, which can prevent the connecting rod 2 from interfering with the installation of external structures such as the gear 6 on the main body 1 of the cold nozzle structure.

[0035] During actual implementation, the liquid silicone will enter the cold runner of the cold nozzle structure body 1 through the feed pipe 7, and then the sliding scraper 8 can allow the liquid silicone to be injected into the mold from the injection port of the cold nozzle head 3. At the same time, the motor 61 is started to drive the gear 6 to rotate. The rotation of the gear 6 will drive the ring gear 5 and the multiple scrapers 8 on the ring gear 5 to rotate together. During the rotation of the scraper 8, not only can the liquid silicone retained on the surface of the cold runner of the cold nozzle structure body 1 be scraped off, but the liquid silicone in the cold runner can also be stirred to a certain extent, effectively avoiding the retention of liquid silicone. The scraped liquid silicone will flow into the mold together with other liquid silicone before solidification, thereby improving the utilization rate of the material. At the same time, the water stored in the water storage chamber 12 can also make the cold nozzle structure body 1 heated more evenly. The ring gear 5 is made of a material with good thermal conductivity, which can also further improve the heat dissipation effect of the cold nozzle structure body 1 and ensure the function of the cold runner.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cold nozzle structure for cold runner silicone, characterized by: The cold nozzle structure for cold runner silicone includes: The main body (1) of the cold nozzle structure, on the side of the main body (1) of the cold nozzle structure, a plurality of connecting rods (2) for connecting two sections of the main body (1) of the cold nozzle structure are fixedly connected. At one end of the main body (1) of the cold nozzle structure, a cold nozzle head (3) is inserted and fixed. At one end of the main body (1) of the cold nozzle structure, a valve needle (4) is slidably inserted. On one side of the main body (1) of the cold nozzle structure, a feed pipe (7) is inserted and fixed. A gear ring (5), the gear ring (5) is located on the side of the main body (1) of the cold nozzle structure and is rotatably connected to the main body (1) of the cold nozzle structure. On the side of the gear ring (5), a gear (6) driven by a motor (61) to rotate is meshed. The motor (61) is fixedly connected to the main body (1) of the cold nozzle structure. On one side of the inner cavity of the main body (1) of the cold nozzle structure where the gear ring (5) is located, a plurality of scraping plates (8) distributed in a circumferential array are slidably connected. A spring (9) is fixedly connected between each scraping plate (8) and the gear ring (5).

2. A cold nozzle structure for cold runner silicone according to claim 1, characterized in that: At both ends of the gear ring (5), a limit sealing ring (51) is fixedly connected. On the side of the main body (1) of the cold nozzle structure, a first installation groove (13) for rotatably installing the limit sealing ring (51) is opened.

3. A cold nozzle structure for cold runner silicone according to claim 2, characterized in that: On one side of each of the two first installation grooves (13), a water storage cavity (12) for storing water is communicated, and the size of the first installation groove (13) is larger than the size of the water storage cavity (12). On one side of the main body (1) of the cold nozzle structure, a support plate (11) is fixedly connected. The motor (61) is fixedly connected to the support plate (11).

4. A cold nozzle structure for cold runner silicone according to claim 2, characterized in that: On one side of the gear ring (5), a plurality of second installation grooves (53) are opened. On one side of the scraping plate (8), a telescopic rod (81) is fixedly connected. The telescopic rod (81) and the spring (9) are both located in the inner cavity of the second installation groove (53), and the spring (9) is sleeved on the telescopic rod (81).

5. A cold nozzle structure for cold runner silicone according to claim 4, characterized in that: At both ends of the gear ring (5), a groove (52) is opened, and the groove (52) is located outside the main body (1) of the cold nozzle structure.

6. A cold nozzle structure for cold runner silicone according to claim 5, characterized in that: The scraping plate (8) is arranged in a triangular prism shape, and the surface of the scraping plate (8) that fits the main body (1) of the cold nozzle structure is arranged as an arc surface. The connecting rod (2) is arranged in a "C" shape.

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