Injection mold for long strip-shaped workpieces

Abstract

The utility model discloses a kind of injection mould of long strip-shaped workpiece: the injection mould includes fixed mould and movable mould, the fixed mould is provided with injection port, and the fixed mould and the movable mould between are provided with feed channel and forming chamber;The forming chamber includes several sub-chambers for forming single long strip-shaped workpiece;The feed channel includes the main feed channel of the injection port communication, the sub-feed channel of the sub-chamber communication, the buffer chamber of the main feed channel and the sub-feed channel communication.The injection mould of long strip-shaped workpiece of the utility model can improve the injection of injection raw material and the forming of product, improve the forming quality of long strip-shaped workpiece.

Description

Technical Field

[0001] This utility model relates to the technical field of injection mold structure, and in particular to an injection mold for a long strip-shaped workpiece. Background Technology

[0002] For long and narrow workpieces, the forming cavity of the injection mold is long and narrow.

[0003] At the same time, in order to improve production efficiency, multiple forming cavities will be set up, and the multiple forming cavities will be arranged side by side.

[0004] Meanwhile, the injection port of the injection mold is located on the same side of multiple forming cavities, and the injection mold is also equipped with injection branches to connect the injection port and the forming cavity.

[0005] During injection molding production, the injection material enters the injection mold through the injection port, then enters the forming cavity through the injection branch, and finally flows from one end of the long strip workpiece to the other end along its length.

[0006] However, the different lengths of the injection branches result in variations in the material injection, which significantly affects the forming quality of long strip-shaped workpieces. Utility Model Content

[0007] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an injection mold for elongated workpieces, which can improve the injection of raw materials and the molding of products, thereby improving the molding quality of elongated workpieces.

[0008] An injection mold for a long strip-shaped workpiece according to an embodiment of the present invention: the injection mold includes a fixed mold and a moving mold, the fixed mold is provided with an injection port, and a feeding channel and a forming chamber are provided between the fixed mold and the moving mold; the forming chamber includes a plurality of sub-cavities for forming a single long strip-shaped workpiece; the feeding channel includes a main feeding channel communicating with the injection port, a secondary feeding channel communicating with the sub-cavities, and a buffer cavity communicating with the main feeding channel and the secondary feeding channel.

[0009] According to an embodiment of the present invention, an injection mold for a long strip-shaped workpiece includes a plurality of sub-cavities comprising two first sub-cavities arranged side by side and two second sub-cavities arranged side by side. The two first sub-cavities are located between the two second sub-cavities, and the ends of the two first sub-cavities and the ends of the two second sub-cavities are staggered. The injection port is located between the two first sub-cavities, and the buffer chamber is located at one end of the two first sub-cavities and between the two second sub-cavities.

[0010] According to an embodiment of the present invention, an injection mold for a long strip-shaped workpiece is provided: the number of auxiliary feed channels is two, one of which is located between a first sub-chamber and a second sub-chamber. The auxiliary feed channel has a first opening and a second opening arranged opposite to each other, the first opening communicating with the first sub-chamber and the second opening communicating with the second sub-chamber.

[0011] An injection mold for a long strip-shaped workpiece according to an embodiment of the present utility model: the secondary feed channel has a first protruding section connecting the first opening, a second protruding section connecting the second opening, and a third protruding section extending away from the buffer chamber.

[0012] According to an embodiment of the present invention, an injection mold for a long strip-shaped workpiece is provided: the moving mold includes a first ejector pin, the first ejector pin ejects the sprue formed by the secondary feed channel, and the first ejector pin is located between the first opening and the second opening.

[0013] According to an embodiment of the present invention, an injection mold for a long strip-shaped workpiece includes a buffer chamber comprising an annular channel, a main opening disposed at three quadrants of the annular channel, and two secondary openings. The two secondary openings are disposed opposite to each other. The main opening is connected to the main feed channel, and the secondary openings are connected to the secondary feed channels.

[0014] According to an embodiment of the present invention, an injection mold for a long strip-shaped workpiece includes a buffer chamber comprising a chordal channel located between two secondary openings, the chordal channel passing through the center of the annular channel and connecting the annular channel to the side of the secondary opening opposite to the secondary opening.

[0015] According to an embodiment of the present invention, an injection mold for a long strip-shaped workpiece includes a second ejector pin located at the center of the annular channel. The second ejector pin is used to eject the sprue formed by the annular channel and the chord channel.

[0016] According to an embodiment of the present invention, an injection mold for a long strip-shaped workpiece is provided: the main feed channel includes a first channel and a second channel that are perpendicular to each other and connected to each other; the first channel is formed in the fixed mold and connected to the injection port; the second channel is formed between the fixed mold and the moving mold; and the second channel is connected to the buffer chamber.

[0017] An injection mold for a long strip-shaped workpiece according to an embodiment of the present invention: the fourth protruding section of the second channel, the fourth protruding section being located on the side of the first channel away from the buffer chamber.

[0018] An injection mold for a long strip-shaped workpiece according to an embodiment of the present invention has at least the following beneficial effects: This invention, by setting up a buffer chamber, can buffer a larger amount of injection molding material, thereby supplying injection molding material evenly to each sub-chamber, so that the elongated workpieces in each sub-chamber are molded in a uniform manner, reducing the impact of material supply differences on product quality.

[0019] By setting up a buffer chamber, this invention can also reduce the length difference between the secondary feed channels and avoid affecting the feeding due to the length difference of the secondary feed channels.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of an injection mold for a long strip-shaped workpiece according to an embodiment of the present utility model; Figure 2 for Figure 1 A schematic diagram of the spatial structure of the feeding channel and forming chamber of an injection mold; Figure 3 for Figure 2 A spatial diagram of the feed channel.

[0023] Reference numerals: Fixed mold 100; Moving mold 110; Injection port 120; Feed channel 130; Forming chamber 140; Main feed channel 150; Secondary feed channel 160; Buffer chamber 170; First sub-chamber 180; Second sub-chamber 190; First protruding section 200; Second protruding section 210; Third protruding section 220; Annular channel 230; Main opening 240; Secondary opening 250; Chord channel 260; First channel 270; Second channel 280; Fourth protruding section 290. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0025] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" and "second" are mentioned, this is only for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation, connection, and linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] The following description, in conjunction with the accompanying drawings, describes an injection mold for a long strip-shaped workpiece according to an embodiment of the present invention.

[0029] Reference Figures 1 to 3 The present invention aims to provide an embodiment of an injection mold for elongated workpieces, which can improve the injection of raw materials and the molding of products, thereby improving the molding quality of elongated workpieces.

[0030] In this embodiment, the injection mold mainly includes a fixed mold 100 and a movable mold 110. The fixed mold 100 is a part that is fixed to the injection molding machine, while the movable mold 110 is a part that moves on the injection molding machine. When the movable mold 110 is close to the fixed mold 100, the mold can be closed, and when the movable mold 110 is away from the fixed mold 100, the mold can be opened and demolded.

[0031] The known structures in injection molds will not be described in detail in this embodiment, but this does not mean that this embodiment does not have such structures.

[0032] Related to the improvement, the fixed mold 100 is provided with an injection port, and a feeding channel and a forming chamber 140 are provided between the fixed mold 100 and the moving mold 110.

[0033] The forming chamber 140 includes several sub-chambers for forming a single elongated workpiece; the feeding channel includes a main feeding channel connecting to the injection port 120, a secondary feeding channel connecting to the sub-chambers, and a buffer chamber connecting the main feeding channel and the secondary feeding channel.

[0034] In summary, by setting up a buffer chamber, this utility model can buffer a larger amount of injection molding material, thereby supplying injection molding material evenly to each sub-chamber, so that the elongated workpieces in each sub-chamber are molded in a uniform manner, reducing the impact of material supply differences on product quality.

[0035] By setting up a buffer chamber, this invention can also reduce the length difference between the secondary feed channels and avoid affecting the feeding due to the length difference of the secondary feed channels.

[0036] In some specific embodiments of this utility model, the plurality of sub-chambers may include two first sub-chambers 180 arranged side by side and two second sub-chambers 190 arranged side by side. The two first sub-chambers 180 are located between the two second sub-chambers 190, and the ends of the two first sub-chambers 180 and the ends of the two second sub-chambers 190 are staggered. The injection port is located between the two first sub-chambers 180, the buffer chamber is located at one end of the two first sub-chambers 180, and the buffer chamber is located between the two second sub-chambers 190.

[0037] It is easy to understand that by setting two first sub-chambers 180 and two second sub-chambers 190, this embodiment can increase the number of products produced by a single mold, improve output, and increase production efficiency.

[0038] Meanwhile, the injection port is located between the two first sub-chambers 180°, which also makes the injection port centrally located in the injection mold, facilitating mold installation and ensuring that the injection mold is subjected to balanced forces when the mold is closed, making it less prone to tipping over.

[0039] The buffer chamber is located at one end of the two first sub-chambers 180 and between the two second sub-chambers 190. This also makes the main feed channel and the secondary feed channel shorter, reducing flow resistance and making it easier to maintain pressure during injection molding production.

[0040] Meanwhile, the buffer chamber is located at one end of the two first sub-chambers 180 and between the two second sub-chambers 190, which also helps to make reasonable use of the space in the length direction of the injection mold and achieve optimized structural layout.

[0041] In some specific embodiments of this utility model, the number of auxiliary feed channels can be two. One auxiliary feed channel is located between a first sub-chamber 180 and a second sub-chamber 190. The auxiliary feed channel has a first opening and a second opening that are arranged opposite to each other. The first opening is connected to the first sub-chamber 180, and the second opening is connected to the second sub-chamber 190.

[0042] It is easy to understand that this embodiment uses a secondary feed channel to feed material to two sub-chambers, which can reduce the number of secondary feed channels, make the feeding of the two sub-chambers corresponding to one secondary feed channel balanced, and ensure good material forming consistency, which is convenient for prompting or ensuring product quality.

[0043] In some specific embodiments of this utility model, the auxiliary feed channel may have a first protruding section 200 connecting the first opening, a second protruding section 210 connecting the second opening, and a third protruding section 220 extending away from the buffer chamber.

[0044] It is easy to understand that by setting the first protruding section 200 and the second protruding section 210, this embodiment also ensures that the first sub-chamber 180 and the second sub-chamber 190 are kept at a certain distance from the auxiliary feed channel, thereby reducing material overflow and facilitating forming.

[0045] The third protruding section 220 is designed to allow for grinding allowance, which facilitates the enlargement of the first and second openings. On the other hand, it ensures that the material is evenly distributed, preventing the material from flowing randomly to one sub-chamber and causing the other sub-chamber to wait for feeding.

[0046] In some specific embodiments of this utility model, the movable mold 110 may include a first ejector pin, which ejects the sprue formed by the secondary feed channel, and the first ejector pin is located between the first opening and the second opening.

[0047] It is easy to understand that by setting the first ejector pin, this embodiment also ensures that the gate of the secondary feed channel is demolded under balanced force, thus preventing the gate from sticking to the secondary feed channel and affecting the next production.

[0048] In some specific embodiments of this utility model, the buffer chamber may include an annular channel 230, a main opening 240 disposed at three quadrant angles of the annular channel 230, and two secondary openings 250, with the two secondary openings 250 disposed opposite to each other, the main opening 240 connected to the main feed channel, and the secondary openings 250 connected to the secondary feed channel.

[0049] It is easy to understand that by including the annular channel 230 in the buffer chamber, this embodiment can both utilize the large volume of the annular channel 230 to meet the needs of material buffering and avoid the buffer chamber being too large, resulting in a large sprue and material waste.

[0050] Meanwhile, the main port 240 and the two secondary ports 250 are located in the quadrant angle of the annular channel 230. The two secondary ports 250 are arranged opposite each other, which also shortens the path of the material through the buffer chamber and reduces the cooling and flow resistance of the material.

[0051] Furthermore, the material that enters the injection mold first can be pre-stored in other positions of the annular channel 230 to prevent the material that enters the injection mold first from forming the product, thereby reducing the impact of cooling differences and eddy current agitation on product forming.

[0052] In some specific embodiments of this utility model, the buffer chamber may include a string channel 260 located between two secondary openings 250, the string channel 260 passing through the center of the annular channel 230, and the string channel 260 connecting the side of the annular channel 230 facing away from the secondary opening 250.

[0053] It is easy to understand that by setting the string channel 260, this embodiment can also easily increase the volume of the buffer chamber, improve the buffering capacity, and at the same time, improve the strength of the gate formed by the buffer chamber, which facilitates demolding and other uses.

[0054] In some specific embodiments of this utility model, the sprue formed by the buffer chamber can be used as a spraying point to facilitate the next processing step.

[0055] In some specific embodiments of this utility model, the movable mold 110 may include a second ejector pin, which is located at the center of the annular channel 230. The second ejector pin is used to eject the sprue formed by the annular channel 230 and the chord channel 260.

[0056] It is easy to understand that this embodiment uses a second ejector pin to facilitate the ejection of the sprue from the buffer chamber, making demolding easier.

[0057] In some specific embodiments of this utility model, the number of ejector pins can be increased to meet the needs of demolding long strip-shaped workpieces and sprues, while avoiding separation of the long strip-shaped workpieces and sprues, thus facilitating use in the next process.

[0058] In some specific embodiments of this utility model, the main feed channel may include a first channel 270 and a second channel 280 that are perpendicular to each other and connected. The first channel 270 is formed in the fixed mold 100 and connected to the injection port. The second channel 280 is formed between the fixed mold 100 and the moving mold 110 and is connected to the buffer chamber.

[0059] It is easy to understand that this embodiment can reduce manufacturing difficulty, facilitate the formation of the main feed channel, and facilitate the entry of materials into the buffer chamber through the first channel 270 and the second channel 280.

[0060] At the same time, it facilitates the demolding of the sprue in the main feed channel and also makes mold repair easier, reducing production costs.

[0061] In some specific embodiments of this utility model, the fourth protrusion 290 of the second channel 280 can be located on the side of the first channel 270 away from the buffer chamber.

[0062] It is readily understood that, by providing the fourth protruding section 290, this embodiment also facilitates the release of material entry pressure, reduces erosion of the mold, prevents prematurely cooled material from entering the sub-cavity, improves product forming, and facilitates the formation of a sprue for easy demolding, reducing demolding difficulty. In the description of this specification, references to terms such as "an embodiment, some embodiments, illustrative embodiment, example, specific example, or some examples," etc., indicate that the specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0063] The terms "first," "second," "third," "fourth," etc. (if applicable) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in a sequence other than that illustrated or described herein.

[0064] It should also be noted that, in the description of this specification, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0065] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may also include other steps or units that are not explicitly listed or that are inherent to such processes, methods, products, or apparatus.

[0066] Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0067] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An injection mold for a long strip-shaped workpiece, characterized by, The injection mold includes a fixed mold (100) and a moving mold (110). The fixed mold (100) is provided with an injection port (120). A feeding channel (130) and a forming chamber (140) are provided between the fixed mold (100) and the moving mold (110). The forming chamber (140) includes a plurality of sub-chambers for forming a single elongated workpiece; The feeding channel (130) includes a main feeding channel (150) connecting the injection port (120), a secondary feeding channel (160) connecting the sub-chamber, and a buffer chamber (170) connecting the main feeding channel (150) and the secondary feeding channel (160).

2. The injection mold for a long strip-shaped workpiece according to claim 1, characterized in that: The plurality of said sub-chambers include two first sub-chambers (180) arranged side by side and two second sub-chambers (190) arranged side by side, the two first sub-chambers (180) being located between the two second sub-chambers (190), and the ends of the two first sub-chambers (180) and the ends of the two second sub-chambers (190) being staggered, the injection port (120) being located between the two first sub-chambers (180), the buffer chamber (170) being located at one end of the two first sub-chambers (180), and the buffer chamber (170) being located between the two second sub-chambers (190).

3. The injection mold for a long strip-shaped workpiece according to claim 2, characterized in that: The number of auxiliary feed channels (160) is two. One auxiliary feed channel (160) is located between a first sub-chamber (180) and a second sub-chamber (190). The auxiliary feed channel (160) has a first opening and a second opening arranged opposite to each other. The first opening is connected to the first sub-chamber (180), and the second opening is connected to the second sub-chamber (190).

4. The injection mold for a long strip-shaped workpiece according to claim 3, characterized in that: The secondary feed channel (160) has a first protruding section (200) connecting to the first opening, a second protruding section (210) connecting to the second opening, and a third protruding section (220) extending away from the buffer chamber (170).

5. The injection mold for a long strip-shaped workpiece according to claim 3, characterized in that: The moving mold (110) includes a first ejector pin, which ejects the sprue formed by the secondary feed channel (160) and is located between the first opening and the second opening.

6. The injection mold for a long strip-shaped workpiece according to claim 1, characterized in that: The buffer chamber (170) includes an annular channel (230), a main inlet (240) disposed in three quadrants of the annular channel (230), and two secondary inlets (250). The two secondary inlets (250) are disposed opposite to each other. The main inlet (240) is connected to the main feed channel (150), and the secondary inlets (250) are connected to the secondary feed channel (160).

7. The injection mold for a long strip-shaped workpiece according to claim 6, characterized in that: The buffer chamber (170) includes a chordal channel (260) located between the two sub-ports (250), the chordal channel (260) passing through the center of the annular channel (230), and the chordal channel (260) connecting the annular channel (230) to the side of the sub-port (250) opposite to the sub-port (250).

8. The injection mold for a long strip-shaped workpiece according to claim 7, characterized in that: The moving mold (110) includes a second ejector pin, which is located at the center of the annular channel (230). The second ejector pin is used to eject the sprue formed by the annular channel (230) and the chord channel (260).

9. The injection mold for a long strip-shaped workpiece according to claim 1, characterized in that: The main feed channel (150) includes a first channel (270) and a second channel (280) that are perpendicular to each other and connected. The first channel (270) is formed in the fixed mold (100) and connected to the injection port (120). The second channel (280) is formed between the fixed mold (100) and the moving mold (110). The second channel (280) is connected to the buffer chamber (170).

10. The injection mold for a long strip-shaped workpiece according to claim 9, characterized in that: The second channel (280) has a fourth protrusion (290), which is located on the side of the first channel (270) away from the buffer chamber (170).

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