A forming mold for a silicone hose with semi-enclosed ends

Abstract

The utility model discloses a molding die for a silicone hose with semi-enclosed ends, wherein the glue feeding structure includes a hot nozzle and a flow channel, wherein the nozzle end passes through the fixed mold core and extends to the movable mold core, the flow channel is arranged on the movable mold core, a first molding ring is arranged on the movable mold core at one side of the end of the flow channel, and a second molding ring is arranged on the fixed mold core at the other side of the flow channel, and the second molding ring cover is arranged on the periphery of the first molding ring; the demolding structure of the mold includes a first core and a second core with matching ends, the first core is slidably mounted in the first molding ring, and the second core is slidably mounted in the second molding ring. The utility model can form a semi-enclosed structure at both ends of the silicone hose in a single mold closing and injection molding action, without the need for subsequent secondary processing, and can ensure the sealing of the mold closing cavity, avoid the generation of injection molding flash, and facilitate the entry of gas into the cavity when the mold is opened, thereby avoiding and slowing down the adhesion of the product to the core and the molding ring due to the air pressure difference, reducing the probability of breaking the product during the mold opening and demolding process, and improving the product yield rate.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic molds, in particular to a molding mold for a silicone hose with semi-closed ends. Background Art

[0002] Silicone hoses are widely used in the fields of medical products, beauty products and personal products, and their structures vary to meet different usage needs. In production, most of these silicone hoses are formed by molding, but because the product has a thin wall and a soft texture, it is necessary to wait until the product is fully cooled and shaped before opening the mold. In addition, the product is easy to be adsorbed on the fixed mold during the mold opening process, and on the movable mold during the demolding process, causing the hose to be deformed or even torn, and the molding efficiency and yield rate are both low. Utility Model Content

[0003] In view of the problems existing in the above-mentioned prior art, the utility model provides a molding mold with semi-closed silicone hose at both ends. A one-time mold closing and injection molding action can form a semi-closed structure at both ends of the silicone hose, without the need for subsequent secondary processing, and can ensure the sealing of the mold closing cavity, avoid the generation of injection molding flash, and facilitate the entry of gas into the cavity when the mold is opened, thereby avoiding and slowing down the adhesion of the product to the core and the molding ring due to the air pressure difference, reducing the chance of the product being broken during the mold opening and demolding process, and improving the product yield.

[0004] In order to solve the above technical problems, a technical solution adopted by the utility model is as follows:

[0005] A forming mold for a semi-enclosed silicone hose at both ends, wherein a movable mold and a fixed mold are provided on the forming mold, a mold core is set on the fixed mold, and a movable mold core is provided on the movable mold, and both the fixed mold core and the movable mold core are provided with a glue feeding structure and a demoulding structure, wherein:

[0006] The glue feeding structure includes a hot nozzle and a flow channel: the hot nozzle is arranged on the fixed mold and its end passes through the fixed mold core and extends to the movable mold core; the flow channel is arranged on the movable mold core at the end facing the fixed mold core, including a main flow channel and a flow guide member embedded in the main flow channel, and a submerged flow channel penetrating the two end surfaces thereof is formed on the flow guide member, one end of the submerged flow channel is connected to the main flow channel, and the other end extends to the upper end of the flow guide member, a first molding ring is arranged on one side of the open end of the submerged flow channel on the movable mold core, and a second molding ring is arranged on the other side of the submerged flow channel on the fixed mold core, and the inner wall of the second molding ring is adapted to a semi-closed end of a silicone hose; when the mold is closed, the end cover of the second molding ring is arranged on the periphery of the first molding ring;

[0007] The demolding structure includes a first core and a second core: the first core is slidably mounted in the first molding ring, one end of which is transmission-connected to the ejector plate arranged on the movable mold, and the other end of which extends to the outside of the first molding ring and the exposed part of which is adapted to the other semi-closed end of the silicone hose; the second core is slidably mounted in the second molding ring, one end of which is adapted to the end of the first core, and a sliding rod is slidably mounted on the other end, one end of the sliding rod extends into the second core, and the other end passes through the second core and the second molding ring and is transmission-connected to the fixed mold core and / or the second molding ring.

[0008] As a further elaboration of the above technical solution:

[0009] In the above technical solution, a group of protrusions are respectively formed on the inner wall of the second molding ring and the end of the first core, and the height / thickness of each group of protrusions is greater than the wall thickness of the silicone hose, so as to form a group of hole grooves at both ends of the silicone hose and form its two semi-closed ends.

[0010] In the above technical solution, the end of the first molding ring facing the fixed mold is a raised first frustum, the fixed mold core is provided with a second through hole adapted to the second molding ring, one end of the second through hole is provided with an outer bell mouth, the outer bell mouth is adapted to the first frustum, and the end on the fixed mold core is provided with a vent groove connected to the outer bell mouth on the periphery of the outer bell mouth.

[0011] In the above technical solution, the end of the second molding ring facing the movable mold is a raised second frustum, the inner wall of the second through hole is provided with an inner bell mouth adapted to the second bell mouth, and the smallest end of the inner bell mouth abuts against the outer bell mouth.

[0012] In the above technical solution, the movable mold core is provided with one or more ejector rods at the lower end of the main flow channel, and one end of each ejector rod is drivingly connected to the ejector plate.

[0013] In the above technical solution, the guide member includes two symmetrically arranged guide blocks, and through grooves are formed on the opposite side walls of the two guide blocks. The two through grooves match to form the submerged flow channel.

[0014] Compared with the prior art, the beneficial effects of the utility model are: by providing a first molding ring on the movable mold core, providing a movable first core in the first molding ring and extending it to the second molding ring on the fixed mold core, and providing a movable second core and a slide rod in the second molding ring, a one-time mold closing and injection molding action can form a semi-closed structure at both ends of the silicone hose, and no subsequent secondary processing is required; by providing a vent groove on the mold closing end face of the fixed mold core, and providing an outer bell mouth and an inner bell mouth on the inner wall of the second through hole on the fixed mold core, the sealing of the mold closing cavity can be ensured, the generation of injection molding flash can be avoided, and it is convenient for gas to enter the cavity when the mold is opened, avoiding and slowing down the adhesion of the product to the core and the molding ring due to the air pressure difference, reducing the probability of the product being broken during the mold opening and demolding process, and improving the product yield rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the structure of the semi-enclosed silicone hose at both ends in this embodiment;

[0016] Figure 2 It is a schematic diagram of the structure of the movable mold core and the fixed mold core in the mold closing state of this embodiment;

[0017] Figure 3 yes Figure 2 Schematic diagram of the decomposition structure;

[0018] Figure 4 It is a schematic cross-sectional view of the glue feeding structure and the demoulding structure in the mold closing state of this embodiment;

[0019] Figure 5 It is a structural schematic diagram of the fixed mold core of this embodiment;

[0020] Figure 6 yes Figure 5 A schematic diagram of the structure from another perspective;

[0021] Figure 7 Schematic diagram of the structure of the movable mold core of this embodiment;

[0022] Figure 8 is a schematic structural diagram of the first core in this embodiment;

[0023] Fig. 9 Schematic diagram of the structure of the second core in this embodiment.

[0024] In the figure: 10, fixed mold core; 11, second through hole; 12, outer bell mouth; 13, vent groove; 14, inner bell mouth; 20, movable mold core; 30, hot nozzle; 41, main flow channel; 42, guide piece; 50, first molding ring; 51, first cone; 60, second molding ring; 61, second cone; 70, first core; 80, second core; 90, slide rod; 100, silicone hose; 1, protrusion; 2, hole groove; 3, ejector rod; 4, guide block; 5, through groove. DETAILED DESCRIPTION

[0025] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0026] The embodiments described with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and cannot be understood as limiting the present application. In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, "several" and "multiple" mean two or more, unless otherwise clearly and specifically defined. In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 an indirect connection through an intermediate medium, or it can be a communication between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances. In this application, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature can include the first and second features being in direct contact, or it can include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0027] The present embodiment is a hot runner mold, on which a fixed mold base, a nozzle plate, a fixed mold plate, a fixed mold core, a movable mold core, a movable mold plate, a pad, an ejector plate and a movable mold base are sequentially provided. The mold composition and its connection relationship as well as the structure of the hot nozzle are common knowledge to those skilled in the art, and their specific structures are not described in detail here. At the same time, in order to simplify the drawings and highlight the new and main structural features of the utility model, the drawings only show a schematic diagram of the structure of the fixed mold core 10 and the movable mold core 20 in the mold and the structural parts thereon.

[0028] To facilitate understanding of the present invention, Figure 1 The schematic diagram of the structure of the silicone hose 100 in this embodiment is shown. It can be seen that the overall structure of the product is slender, and holes 2 are provided at both ends to connect the inside and outside of the hook, forming a semi-closed structure at both ends.

[0029] like Figure 2-4 As shown, a forming mold of a silicone hose with two ends semi-closed, the forming mold is provided with a movable mold and a fixed mold, the fixed mold is provided with a mold core 10, the movable mold is provided with a movable mold core 20, and the fixed mold core 10 and the movable mold core 20 are provided with a glue feeding structure and a demoulding structure, wherein:

[0030] The glue feeding structure includes a hot nozzle 30 and a flow channel: the hot nozzle 30 is arranged on the fixed mold and its end passes through the fixed mold core 10 and extends to the movable mold core 20; the flow channel is arranged on the movable mold core 20 towards the end of the fixed mold core 10, including a main flow channel 41 and a guide member 42 embedded in the main flow channel 41, and a submerged flow channel penetrating the two end surfaces thereof is formed on the guide member 42, one end of the submerged flow channel is connected to the main flow channel 41, and the other end extends to the upper end of the guide member 42, a first molding ring 50 is arranged on one side of the open end of the submerged flow channel on the movable mold core 20, and a second molding ring 60 is arranged on the other side of the submerged flow channel on the fixed mold core 10, and the inner wall of the second molding ring 60 is adapted to a semi-closed end of the silicone hose 100; when the mold is closed, the end of the second molding ring 60 is covered on the periphery of the first molding ring 50;

[0031] The demolding structure includes a first core 70 and a second core 80: the first core 70 is slidably installed in the first molding ring 50, one end of which is transmission-connected to the ejector plate arranged on the movable mold, and the other end thereof extends to the outside of the first molding ring 50 and its exposed part is adapted to the other semi-closed end of the silicone hose 100; the second core 80 is slidably installed in the second molding ring 60, one end of which is adapted to the end of the first core 70, and a sliding rod 90 is slidably installed on the other end, one end of the sliding rod 90 extends into the second core 80, and the other end passes through the second core 80 and the second molding ring 60 and is transmission-connected to the fixed mold core 20 and / or the second molding ring 60.

[0032] like Figure 4As shown, during the mold closing process, the movable mold core 20 matches the fixed mold core 10, the end of the hot nozzle 30 extends into the main flow channel 41, the second molding ring 60 is covered on the outer periphery of the end of the first molding ring 50, the end of the first core 70 extends into the second molding ring 60 and the second core 80 is pressed against the second molding ring 60, and at the same time, the slide bar 90 passes through the second molding ring 60 and extends into the second core 80; after the mold closing is completed, the glue enters the cavity formed by the first molding ring 50, the first core 70, the second core 80 and the second molding ring 60 from the hot nozzle 30, the main flow channel 41 and the submerged flow channel; after the injection molding is completed, the mold is opened, and the movable mold belt The movable fixed mold core 20 drives the first molding ring 50 to leave the fixed mold core 10, and the sliding rod 90 slides relative to the second core 80 and the silicone hose 100, and a small amount of gas enters the first molding core 50. The silicone hose 100 is attached to the second core 80 and the first core 70 and withdraws from the second molding ring 60. After the mold opening is completed, the external force drives the ejector plate to drive the first core 70 to eject the second core 80 and the silicone hose 100 to make them leave the movable mold core 20. Finally, the silicone hose 100 and the second core 80 are separated manually or by a robot, and the second core 80 is placed in the second molding ring 60 or the end of the first core 70 again to start the next mold closing action.

[0033] like Figure 5-6 As shown, a group of protrusions 1 are respectively formed on the inner wall of the second molding ring 60 and the end of the first core 70, and the height / thickness of each group of protrusions 1 is greater than the wall thickness of the silicone hose 100, so as to form a group of hole grooves 2 at both ends of the silicone hose 100 and form its two semi-closed ends.

[0034] It is understandable that during the injection molding process, each group of protrusions 1 can cooperate with the enclosed cavity, and a group of holes and grooves 2 are formed at both ends of the silicone hose 100.

[0035] like Figure 4 , 7 -8, the end of the first molding ring 50 facing the fixed mold is a raised first cone 51, the fixed mold core 10 is provided with a second through hole 11 adapted to the second molding ring 60, one end of the second through hole 11 is provided with an outer bell mouth 12, the outer bell mouth 12 is adapted to the first cone 51, and the end on the fixed mold core 10 is provided with a vent groove 13 connected to the outer bell mouth 11 on the periphery of the outer bell mouth 11; the end of the second molding ring 60 facing the movable mold is a raised second cone 61, the inner wall of the second through hole 11 is provided with an inner bell mouth 14 adapted to the second cone 61, and the inner bell mouth 14 is abutted against the smallest end of the outer bell mouth 12.

[0036] It can be understood that the inner bell mouth 14 can limit the position of the second molding ring 60 in the fixed mold core 10 and ensure that the two fit together, ensure that the cavity formed by the various structural parts maintains good sealing, and avoid the formation of burrs on the outer wall of the silicone hose 100 during injection molding; when the mold is opened, the interconnected outer bell mouth 12 and the vent groove 13 can allow the gas to quickly enter the second molding ring 60 and enter the inner and outer sides of the silicone hose 100, avoiding the silicone hose 100 from being adsorbed on the inner wall of the second molding ring 60 due to the air pressure difference, thereby avoiding or slowing down the damage or pulling of the silicone hose 100.

[0037] like Figure 4 , 9 As shown, one or more ejector rods 3 are provided at the lower end of the main flow channel 41 on the movable mold core 20, and one end of each ejector rod 3 is drivingly connected to the ejector plate; the guide member 42 includes two symmetrically arranged guide blocks 4, and through grooves 5 are formed on the opposite side walls thereof, and the two through grooves 5 are matched to form a submerged flow channel.

[0038] It can be understood that in this embodiment, the guide member 42 is configured as a structure composed of two guide blocks 4, and the through groove 5 is disposed on the outer wall of each guide block 4, which is convenient for production and processing as well as assembly.

[0039] The present invention provides a first molding ring 50 on the movable mold core 20, provides a movable first core 70 in the first molding ring 50 and extends it to the second molding ring 60 on the fixed mold core 10, and provides a movable second core 80 and a slide rod 90 in the second molding ring 60. One mold closing and injection molding action can form a semi-closed structure at both ends of the silicone hose 100 without subsequent secondary processing; by providing a vent groove 13 on the mold closing end face of the fixed mold core 10, and providing an outer bell mouth 12 and an inner bell mouth 14 on the inner wall of the second through hole 11 on the fixed mold core 10, the sealing of the mold closing cavity can be ensured, the generation of injection molding flash can be avoided, and it is convenient for gas to enter the cavity when the mold is opened, so as to avoid and slow down the adhesion of the product to the core and the molding ring due to the air pressure difference, reduce the probability of breaking the product during the mold opening and demolding process, and improve the product yield rate.

[0040] The above does not limit the technical scope of the present invention. Any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A forming mold for a silicone hose with semi-closed ends, wherein the forming mold is provided with a movable mold and a fixed mold, the fixed mold is provided with a mold core, and the movable mold is provided with a movable mold core, characterized in that: The fixed mold core and the movable mold core are both provided with a glue feeding structure and a demoulding structure, wherein: The glue feeding structure includes a hot nozzle and a flow channel: the hot nozzle is arranged on the fixed mold and its end passes through the fixed mold core and extends to the movable mold core; the flow channel is arranged on the movable mold core and faces the end of the fixed mold core, including a main flow channel and a flow guide member embedded in the main flow channel, and a submerged flow channel penetrating the two end surfaces thereof is formed on the flow guide member, one end of the submerged flow channel is connected to the main flow channel, and the other end extends to the upper end of the flow guide member, a first molding ring is arranged on one side of the open end of the submerged flow channel on the movable mold core, and a second molding ring is arranged on the other side of the submerged flow channel on the fixed mold core, and the inner wall of the second molding ring is adapted to a semi-closed end of a silicone hose; when the mold is closed, the end cover of the second molding ring is arranged on the periphery of the first molding ring; The demolding structure includes a first core and a second core: the first core is slidably mounted in the first molding ring, one end of which is transmission-connected to the ejector plate arranged on the movable mold, and the other end of which extends to the outside of the first molding ring and the exposed part of which is adapted to the other semi-closed end of the silicone hose; the second core is slidably mounted in the second molding ring, one end of which is adapted to the end of the first core, and a sliding rod is slidably mounted on the other end, one end of the sliding rod extends into the second core, and the other end passes through the second core and the second molding ring and is transmission-connected to the fixed mold core and / or the second molding ring.

2. A forming mold for a silicone hose with two ends semi-closed according to claim 1, characterized in that: A group of protrusions are respectively formed on the inner wall of the second molding ring and the end of the first core, and the height / thickness of each group of protrusions is greater than the wall thickness of the silicone hose, so as to form a group of holes and grooves at both ends of the silicone hose and form its two semi-closed ends.

3. The forming mold of the silicone hose with two ends semi-closed according to claim 1, characterized in that: The end of the first molding ring facing the fixed mold is a raised first frustum, the fixed mold core is provided with a second through hole adapted to the second molding ring, one end of the second through hole is provided with an outer bell mouth, the outer bell mouth is adapted to the first frustum, and the end on the fixed mold core is provided with a vent groove connected to the outer bell mouth on the periphery of the outer bell mouth.

4. The forming mold of the silicone hose with two ends semi-closed according to claim 3, characterized in that: The end of the second molding ring facing the movable mold is a raised second frustum, and the inner wall of the second through hole is provided with an inner bell mouth adapted to the second bell mouth, and the inner bell mouth abuts against the smallest end of the outer bell mouth.

5. A forming mold for a silicone hose with two ends half-closed according to any one of claims 1 to 4, characterized in that: The movable mold core is provided with one or more ejector rods at the lower end of the main flow channel, and one end of each ejector rod is transmission-connected to the ejector plate.

6. A forming mold for a silicone hose with two ends half-closed according to any one of claims 1 to 4, characterized in that: The guide member includes two symmetrically arranged guide blocks, each of which has a through groove formed on its opposite side walls, and the two through grooves match to form the submerged flow channel.

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