Die with delayed ejection structure

Abstract

The utility model relates to a mould with a delayed ejection structure, which comprises a front mould, a rear mould and an ejection component arranged on the rear mould, the front mould and the rear mould can be mutually opened and closed, a cavity is formed when the front mould and the rear mould are closed, a flow channel communicated with the cavity is arranged in the rear mould, and the ejection component is arranged on the rear mould. At least one side wall of the runner is provided with a protrusion protruding outwards horizontally, the ejection assembly comprises a product ejector pin, a runner water gap material ejector pin and an ejector pin plate, one end of the product ejector pin is fixedly connected with the ejector pin plate, the other end of the product ejector pin movably extends into the cavity, one end of the runner water gap material ejector pin movably extends into the runner, and the other end of the runner water gap material ejector pin movably extends into the cavity. One end of the product ejector pin is inserted into the ejector pin plate, the other end of the product ejector pin is inserted into the ejector pin plate, an avoiding space distance is formed between the part, inserted into the ejector pin plate, of the runner water gap material ejector pin and the ejector pin plate, and when the ejector pin plate moves by a distance equal to the avoiding space distance, the product ejector pin and the runner water gap material ejector pin move synchronously. According to the utility model, the product ejector pin and the runner nozzle material ejector pin are ejected successively, manual operation is reduced, and the reject ratio of products is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to mould technical field, specifically, relate to a mould with delay ejection structure. BACKGROUND

[0002] In injection mould, because the part product because own characteristic requirement, the glue way must use "big water gap" glue, this kind of glue way can lead to runner water gap material and product to be connected together, and in order to obtain the final qualified product, then need manual runner water gap material removal. Manual runner water gap material removal process not only time-consuming and laborious, and in the removal process, it is difficult to ensure that the water gap material residue is completely removed. The residual water gap material protrusion not only affects the appearance quality of the product, but also may hinder the subsequent assembly process, and even lead to assembly failure. SUMMARY

[0003] The utility model discloses a mould with delay ejection structure, realized product ejector pin and runner water gap material ejector pin ejection in turn, reduce manual operation, reduced product failure rate.

[0004] A mould with delay ejection structure, including front mould, back mould and the ejection assembly of being located in the back mould, the front mould with the back mould can be mutually opened and closed, when the front mould with the back mould is closed, forms the cavity, is equipped with the runner of the communication with the cavity in the back mould, at least one side wall of the runner is equipped with the horizontal outward protruding protrusion, the ejection assembly includes product ejector pin, runner water gap material ejector pin and ejector pin plate, one end of product ejector pin with the ejector pin plate fixed connection, the other end movablely extends into the cavity, one end of runner water gap material ejector pin movablely extends into the runner, and the other end is inserted into the ejector pin plate, and the part of runner water gap material ejector pin inserted into the ejector pin plate with the ejector pin plate between is equipped with the avoidance distance, when the ejector pin plate moves and the avoidance distance is equal, product ejector pin and runner water gap material ejector pin synchronous movement.

[0005] In the above technical solution, first, the front mold and the back mold are closed to form a cavity for injection molding. Subsequently, the molten plastic is injected into the cavity through the runner to fill the entire mold space. After the injection molding is completed, the mold remains closed to allow the plastic to cool and solidify into the desired shape in the mold. When the plastic product is completely solidified, the front mold and the back mold are separated. At this time, the ejection assembly starts to work. When the ejector plate starts to move, the product ejector will immediately start to push the product out of the mold. Due to the restriction of the protrusion, the product is separated from the sprue material in the runner when it is ejected from the cavity. At the same time, due to the existence of the avoidance distance, the runner sprue material ejector remains in place and does not move until the distance moved by the ejector plate reaches the same as the avoidance distance. The runner sprue material ejector begins to move with the ejector plate, and then ejects the sprue material. The utility model provides a protrusion and a avoidance distance, so that the product can be separated from the runner sprue material and ejected before the runner sprue material, thereby improving the integrity and appearance quality of the product.

[0006] Furthermore, the ejector plate includes an upper ejector plate and a lower ejector plate, the upper ejector plate is detachably mounted on the lower ejector plate, the product ejector is arranged on the upper ejector plate, and the runner material ejector passes through the upper ejector plate and the lower ejector plate in sequence and contacts the bottom of the rear mold.

[0007] In the above technical solution, the ejector plate consists of an upper plate and a lower plate, with the upper plate being detachably mounted on the lower plate. This detachable design allows the upper plate to be easily removed from the lower plate when needed, facilitating maintenance, cleaning, or ejector pin replacement.

[0008] Furthermore, the lower top plate is provided with an extension block extending horizontally outward, and the extension block can move up and down within the range of the avoidance distance. When the lower top plate moves a distance equal to the avoidance distance, the extension block is tightly pressed against the runner nozzle material ejector pin.

[0009] In the above technical solution, as the lower ejector plate continues to move, when its travel distance reaches a distance equal to the clearance distance, the extension block on the lower ejector plate begins to contact and tighten with the runner nozzle ejector pin. This contact point marks the end of the delay phase and the beginning of the synchronous ejection phase.

[0010] Furthermore, the product ejector includes a metal ejector and a plastic ejector for supporting the product. One end of the metal ejector is threadedly connected to the plastic ejector, and the other end is inserted into the upper ejector plate.

[0011] In the above technical solution, the plastic ejector pin is located above the metal ejector pin and directly contacts the product. Because the plastic material has certain elasticity and toughness, the plastic ejector pin can better adapt to the shape and surface of the product, providing uniform and stable support force to prevent damage to the product during ejection. The metal ejector pin, as the main load-bearing and force transmission component of the product ejector pin, has high strength and wear resistance. Its one end is connected with the plastic ejector pin through threads, ensuring the firm combination and reliable force transmission path between the two.

[0012] Further, the plastic ejector pin is provided with a tightening portion at the end away from the metal ejector pin.

[0013] In the above technical solution, the tightening portion facilitates the clamping of the tightening tool, so that the plastic ejector pin can be firmly installed on the metal ejector pin. This design simplifies the installation process, improves the installation efficiency, and ensures the stability of the plastic ejector pin during ejection.

[0014] Further, the tightening portion includes two gripping planes, and the two gripping planes are arranged along the radial direction of the plastic ejector pin.

[0015] In the above technical solution, the two radially arranged gripping planes provide stable gripping points for the operator. This design allows the operator to easily clamp the plastic ejector pin with fingers or tools without worrying about slipping or improper rotation.

[0016] Further, the protrusions are two, respectively located on the opposite side walls of the flow channel.

[0017] In the above technical solution, the protrusions are used to limit the movement of the nozzle material in the flow channel, so that the product ejector pin does not eject the nozzle material when ejecting the product.

[0018] Further, the protrusions extend along the length direction of the flow channel.

[0019] In the above technical solution, the protrusions extend along the length direction of the flow channel, which can significantly increase the contact area between the nozzle material and the protrusions, further limiting the movement of the nozzle material.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] 1. The protrusions are arranged on the side walls of the flow channel to limit the movement of the nozzle material in the flow channel, so that the product ejector pin does not eject the nozzle material when ejecting the product.

[0022] 2, the needle plate sets the space distance, because the product needle and the needle plate fixed installation, when the needle plate moves, the product needle moves synchronously, at the same time, because the space distance exists, when the needle plate moves, the flow channel nozzle material needle keeps still, when the needle plate moves the same distance as the space distance, the flow channel nozzle material needle starts to move with the needle plate, and then ejects the nozzle material. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The utility model discloses a mould with delay ejection structure.

[0024] Figure 2 The utility model discloses a structure schematic view of the ejection assembly.

[0025] Figure 3 For Figure 2 The enlarged schematic view of A in the middle.

[0026] Figure 4 The utility model discloses a sectional structure schematic view of the lower mould

[0027] Figure 5 The utility model discloses a structure schematic view of the tightening part.

[0028] BRIEF DESCRIPTION OF DRAWINGS

[0029] 1, the front mould;

[0030] 2, the back mould;201, the flow channel;2011, the protrusion;

[0031] 3, the ejection assembly;301, the product needle;3011, the metal needle;3012, the plastic needle;3012a, the tightening part;3012b, the holding plane;302, the flow channel nozzle material needle;303, the needle plate;3031, the upper needle plate;3032, the lower needle plate;3032a, the space distance;3032b, the extension block;

[0032] 4, the cavity;5, the product;6, the nozzle material. DETAILED DESCRIPTION

[0033] The delay ejection structure's mould of the utility model will be described further in detail in combination with specific embodiment and drawings. The preferred implementation manner of the utility model is given in the drawings. However, the utility model can be realized in many different forms, and is not limited to the implementation manner described herein.

[0034] Please refer to Figure 1 And Figure 4In a preferred embodiment, the mold with the delayed ejection structure comprises a front mold 1, a rear mold 2, and an ejection assembly 3 arranged on the rear mold 2. The front mold 1 and the rear mold 2 can be opened and closed relative to each other. When the front mold 1 and the rear mold 2 are closed, a cavity 4 is formed. The rear mold 2 is provided with a flow channel 201 that is in communication with the cavity 4. At least one side wall of the flow channel 201 is provided with a horizontally outward protruding protrusion 2011. The ejection assembly 3 comprises a product ejector pin 301, a flow channel nozzle material ejector pin 302, and an ejector plate 303. One end of the product ejector pin 301 is fixedly connected to the ejector plate 303, and the other end is movably inserted into the cavity 4. One end of the flow channel nozzle material ejector pin 302 is movably inserted into the flow channel 201, and the other end is inserted into the ejector plate 303. A space 3032a is arranged between the portion of the flow channel nozzle material ejector pin 302 inserted into the ejector plate 303 and the ejector plate 303. When the ejector plate 303 moves a distance equal to the space 3032a, the product ejector pin 301 and the flow channel nozzle material ejector pin 302 move synchronously.

[0035] In actual application, first, the front mold 1 and the rear mold 2 are closed to form a cavity 4 for injection molding. Then, the molten plastic is injected into the cavity 4 through the flow channel 201 to fill the entire mold space. After the injection is completed, the mold remains closed to allow the plastic to cool and solidify into the desired shape in the mold. When the plastic product is completely solidified, the front mold 1 and the rear mold 2 are separated. At this time, the ejection assembly 3 starts to work. When the ejector plate 303 starts to move, the product ejector pin 301 will immediately start to push the product 5 out of the mold. Due to the limitation of the protrusion 2011, the product is separated from the nozzle material 6 in the flow channel 201 when being ejected from the cavity 4. At the same time, due to the existence of the space 3032a, the flow channel nozzle material ejector pin 302 remains stationary until the distance moved by the ejector plate 303 reaches the space 3032a. Then, the flow channel nozzle material ejector pin 302 starts to move with the ejector plate 303, and the nozzle material 6 is ejected. By arranging the protrusion 2011 and the space 3032a, the product 5 can be separated from the flow channel nozzle material 6 and ejected before the flow channel nozzle material 6, thereby improving the integrity and appearance quality of the product 5.

[0036] For reference Figure 4 In this embodiment, the ejector plate 303 comprises an upper ejector plate 3031 and a lower ejector plate 3032. The upper ejector plate 3031 is detachably mounted on the lower ejector plate 3032. The product ejector pin 301 is arranged on the upper ejector plate 3031, and the flow channel nozzle material ejector pin 302 passes through the upper ejector plate 3031 and the lower ejector plate 3032 in sequence and contacts the bottom of the rear mold 2. The ejector plate 303 is composed of the upper ejector plate 3031 and the lower ejector plate 3032. The upper ejector plate 3031 is detachably mounted on the lower ejector plate 3032. This detachable design allows users to easily remove the upper ejector plate 3031 from the lower ejector plate 3032 when needed, thereby facilitating maintenance, cleaning, or replacement of the ejector pins and other operations.

[0037] Please refer to Figure 4 The lower top plate 3032 is provided with an extension block 3032b extending horizontally outward, which can move up and down within a range of avoidance distance 3032a. When the lower top plate 3032 moves a distance equal to the avoidance distance 3032a, the extension block 3032b abuts against the runner gate pin 302. Before the ejection process starts, the extension block 3032b is located at a certain position in its moving range, and there is a certain gap between it and the runner gate pin 302, i.e. the avoidance distance 3032a. When the pin plate 303 (including the upper top plate 3031 and the lower top plate 3032) starts to move, the product pin 301 first pushes the product 5 out of the cavity 4. At this time, due to the existence of the avoidance distance 3032a, the runner gate pin 302 does not immediately move with it. With the continuous movement of the pin plate 303, when the distance it moves reaches the same degree as the avoidance distance 3032a, the extension block 3032b on the lower top plate 3032 begins to contact and abut against the runner gate pin 302. This contact point marks the end of the delay phase and the beginning of the synchronous ejection phase. Once the extension block 3032b abuts against the runner gate pin 302, they begin to move synchronously. At this time, the runner gate pin 302 is pushed out of the runner by the extension block 3032b

[0038] Please refer to Figure 5 The product pin 301 includes a metal pin 3011 and a plastic pin 3012 for supporting the product. One end of the metal pin 3011 is threadedly connected to the plastic pin 3012, and the other end is inserted into the upper top plate 3031. The plastic pin 3012 is located above the metal pin 3011 and directly contacts the product. Because the plastic material has a certain elasticity and toughness, the plastic pin 3012 can better adapt to the shape and surface of the product 5, providing uniform and stable support force to prevent damage to the product 5 during ejection. The metal pin 3011, as the main load-bearing and force-transmitting component of the product pin 301, has high strength and wear resistance. Its one end is threadedly connected to the plastic pin 3012, ensuring firm combination and reliable force transmission path between them. The use of the metal pin 3011 significantly enhances the strength and durability of the product pin 301, enabling it to withstand greater ejection force and more severe working environment. The plastic pin 3012 directly contacts the product, and its soft material can reduce the impact and damage to the product 5, protecting the appearance and internal structure of the product. The threaded connection design allows the metal pin 3011 and the plastic pin 3012 to be replaced or repaired separately, reducing maintenance cost and difficulty.

[0039] Further, please refer to Figure 5The tightening portion 3012a facilitates clamping by a tightening tool, so that the plastic ejector pin 3012 can be firmly installed on the metal ejector pin 3011. This design simplifies the installation process, improves installation efficiency, and ensures the stability of the plastic ejector pin 3012 during the ejection process.

[0040] In the present embodiment, the tightening portion 3012a includes two holding planes 3012b arranged along the radial direction of the plastic ejector pin 3012. The two radially arranged holding planes 3012b provide stable holding points for the operator. This design allows the operator to easily clamp the plastic ejector pin 3012 with fingers or tools without worrying about slipping or improper rotation. At the same time, the presence of the holding planes 3012b increases the contact area between the operator's hand or tool and the plastic ejector pin 3012, thereby increasing the friction and helping to maintain the stability of the plastic ejector pin 3012 during rotation, preventing it from moving or rotating unexpectedly.

[0041] It should be noted that the protrusions 2011 in the present embodiment are two, located on the opposite side walls of the flow channel 201. The protrusions 2011 are used to limit the movement of the nozzle material 6 in the flow channel 201, so that when the product ejector pin 301 ejects the product 5, the nozzle material 6 is also ejected. The protrusions 2011 located on the opposite side walls of the flow channel 201 can more effectively restrict the movement of the nozzle material 6.

[0042] Specifically, the protrusions 2011 extend along the length direction of the flow channel 201. The protrusions 2011 extending along the length direction of the flow channel 201 can significantly increase the contact area between the nozzle material 6 and the protrusions 2011, further restricting the movement of the nozzle material.

[0043] In the description of the present utility model, it should be understood that the terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present utility model.

[0044] In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0045] In the utility model, unless another explicit provision and limitation, the terms "mount", "link", "connect", "fix" and so on terms should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be direct connection, also can pass through intermediate medium indirectly connect, can be two element inside's intercommunication or two element's interaction relation. For ordinary skilled person in the art, can understand the above terms in the utility model of concrete meaning according to specific circumstances.

[0046] Although the description of the utility model is combined with the above specific embodiment, it is obvious that many substitutions, modifications and changes can be made according to the above content for the person skilled in the art. Therefore, all such alternatives, improvements and changes are included in the spirit and scope of the appended claims.

Claims

1. A mold with a delayed ejection structure, characterized in that: The present invention comprises a front mold, a rear mold, and an ejection assembly provided on the rear mold, the front mold and the rear mold can be opened and closed with each other, and a cavity is formed when the front mold and the rear mold are closed, a flow channel connected to the cavity is provided in the rear mold, and at least one side wall of the flow channel is provided with a horizontal outward protrusion, and the protrusion extends along the length direction of the flow channel, the ejection assembly comprises a product ejector, a flow channel sprue ejector and an ejector plate, one end of the product ejector is fixedly connected to the ejector plate, and the other end can be movably extended into the cavity, one end of the flow channel sprue ejector can be movably extended into the flow channel, and the other end is inserted into the ejector plate, A clearance distance is provided between the part of the runner material ejector inserted into the ejector plate and the ejector plate. When the ejector plate moves a distance equal to the clearance distance, the product ejector and the runner material ejector move synchronously; the ejector plate includes an upper ejector plate and a lower ejector plate, the upper ejector plate is detachably mounted on the lower ejector plate, the product ejector is provided on the upper ejector plate, the runner material ejector passes through the upper ejector plate and the lower ejector plate in sequence and contacts the bottom of the rear mold; the product ejector includes a metal ejector and a plastic ejector for supporting the product, one end of the metal ejector is threadedly connected to the plastic ejector, and the other end is inserted into the upper ejector plate.

2. The mold with a delayed ejection structure according to claim 1, characterized in that: The lower top plate is provided with an extension block extending horizontally outward, and the extension block can move up and down within the range of the avoidance distance. When the ejector plate moves a distance equal to the avoidance distance, the extension block is tightly pressed against the runner gate material ejector.

3. The mold with a delayed ejection structure according to claim 1, characterized in that: A tightening portion is provided on one end of the plastic thimble away from the metal thimble.

4. The mold with a delayed ejection structure according to claim 3, characterized in that: The tightening portion includes two gripping planes, and the two gripping planes are arranged along the radial direction of the plastic ejector.

5. The mold with a delayed ejection structure according to claim 1, characterized in that: There are two protrusions, which are respectively located on two opposite side walls of the flow channel.

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