A plastic mold capable of fast changing mold cores on an injection molding machine

Abstract

The utility model relates to mould technical field, concretely relates to a plastic mould of quick mould core replacement on injection molding machine, including fixed die assembly and movable die assembly, fixed die assembly includes fixed die fixed plate and sets up on fixed die fixed plate fixed die plate, movable die assembly includes movable die fixed plate, movable die plate and the mould foot of setting between movable die fixed plate and movable die plate, the female mould core is detachably provided on the fixed die plate, and the male mould core is detachably provided on the movable die plate, through the design quick detachable mould core and integrated ejection unit, make when producing abnormality, need not to dismount the whole mould from injection molding machine, can directly complete the replacement and maintenance of mould core on the machine table, thereby greatly shorten the downtime caused by maintenance and debugging, significantly improve the operation rate and production flexibility of injection molding machine, greatly reduce the labor intensity and the dependence on professional skill of operator simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically to a plastic mold for quick mold core changing on an injection molding machine. Background Technology

[0002] In the injection molding production of precision electronic components such as connectors, due to the complex structure of the products, the molds typically have numerous small inserts and thin plastic areas. This structural feature makes the molds prone to production abnormalities such as broken inserts, misaligned inserts, broken ejector pins, uneven ejection, and material shortages due to poor venting.

[0003] When the aforementioned anomalies occur, the traditional solution requires completely disassembling the entire mold from the injection molding machine, transporting it to a mold repair department, and performing lengthy cleaning, repair, and debugging on a specialized mold bed. This process is not only labor-intensive and demands high operator skills, but it also leads to prolonged downtime of the injection molding machine, resulting in significantly low machine uptime, a serious waste of manpower and time, and a direct increase in production costs.

[0004] Therefore, in view of the above situation, there is an urgent need to develop a plastic mold that allows for rapid mold core changing on injection molding machines, in order to overcome the shortcomings in current practical applications and meet current needs. Utility Model Content

[0005] The purpose of this invention is to provide a plastic mold for quick mold core changing on an injection molding machine, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a plastic mold for quick mold core changing on an injection molding machine, comprising a fixed mold assembly and a moving mold assembly. The fixed mold assembly includes a fixed mold fixing plate and a fixed template disposed on the fixed mold fixing plate. The moving mold assembly includes a moving mold fixing plate, a moving template, and mold feet disposed between the moving mold fixing plate and the moving template.

[0007] A female mold core is detachably provided on the fixed template, and a male mold core is detachably provided on the moving template;

[0008] The male mold core is integrated with an ejection mechanism to form an ejection unit that can be detached from the entire driven mold assembly;

[0009] The fixed template and / or moving template are provided with elastic ejection elements to assist in ejecting the female mold core and / or male mold core during disassembly.

[0010] Specifically, by detachably setting the female mold core (9) and male mold core (11) on the fixed mold plate (3) and the moving mold plate (5), and integrating the male mold core (11) with the ejection mechanism into an ejection unit that can be disassembled as a whole, and supplemented by the elastic ejection element (8) set on the mold plate, the mold core can be quickly replaced without disassembling the entire mold on the injection molding machine, which greatly shortens the downtime caused by maintenance, mold cleaning or production change, significantly improves production efficiency and machine utilization, and effectively reduces the labor intensity and production cost of operators.

[0011] Preferably, the ejector unit includes:

[0012] male model ren;

[0013] Ejector pins inserted into the male mold core;

[0014] Ejector plate for fixing ejector pins;

[0015] And the connecting piece that connects the ejector plate and the male mold core, so that the male mold core, ejector pin, ejector plate and connecting piece form a whole.

[0016] Preferably, the connecting member can be a tie rod, which fixes the ejector plate to the male mold core.

[0017] Specifically, this design makes the male mold core, ejector pins, ejector plate, and connectors form a stable whole. When disassembling and assembling the mold core, the operator can remove and install the entire ejection unit as a whole from the moving mold assembly at once, avoiding the tedious individual calibration and positioning of small ejector pins in the narrow machine space. This greatly simplifies the operation process, effectively prevents bending, damage, or assembly errors that may occur during the disassembly and assembly of ejector pins, significantly improves mold change efficiency and operational reliability, and reduces the risk of damage to precision parts.

[0018] Preferably, both the female mold core and the male mold core are equipped with a mold removal process structure.

[0019] Preferably, the demolding process structure can be a threaded hole, a draft groove, or a lifting hole.

[0020] Specifically, this design provides operators with standard and diverse points of force application, enabling them to safely and effortlessly remove the mold core from the cavity of the fixed or moving mold plate using external tools such as screws, pry bars, or lifting tools. This effectively avoids damage to the mold core, scratches to personnel, and damage to its precision forming surfaces that may be caused by inconvenient manual operation or forced prying. Thus, while ensuring rapid mold change, it greatly improves the safety and convenience of operation and protects the long-term service life of the mold.

[0021] Preferably, the elastic ejection element can be a spring, urethane, or a rubber pad, which is disposed in the mounting groove of the mold foot and acts on the male mold core.

[0022] Specifically, this structure can immediately provide a stable initial ejection force when the second locking member is released, automatically dislodging the male mold core and its integrated ejection unit from the cavity of the moving template by a small displacement. This effectively overcomes the difficulty of removing the mold core and the template due to vacuum adsorption or excessive tightness, making subsequent manual mold removal operations more labor-saving and smoother. It not only significantly improves mold changing efficiency, but also avoids scratches and damage to the male mold core or the moving template caused by forcibly prying it with tools, ensuring the fitting accuracy and service life of the mold.

[0023] Preferably, the female mold core is fixed to the fixed template by the first locking member, and the male mold core is fixed to the moving template by the second locking member.

[0024] Preferably, the first locking element and the second locking element can be mold locking screws.

[0025] Specifically, this fastening method achieves stable installation and quick release of the mold core through a simple and reliable mechanical connection. Operators only need to use a standard wrench to tighten or loosen the locking screws at the parting surface to complete the fixing and release of the mold core, without disassembling the main mold frame or using special hydraulic or electrical devices. This not only greatly simplifies the operation process and shortens the mold change time, but also reduces the skill requirements of operators and the dependence on tools. At the same time, this rigid connection method can ensure that the mold core maintains accurate positioning and stability when subjected to high injection pressure during the production process, fundamentally guaranteeing the molding quality of the product and achieving the core purpose of rapid mold change.

[0026] Preferably, the fixed mold plate is provided with a detachable sprue.

[0027] It should be noted that A in the attached diagram of the instruction manual is a mounting groove set on the mold foot for installing elastic ejector elements.

[0028] Compared with the prior art, this utility model provides a plastic mold for quick mold core changing on an injection molding machine, which has the following beneficial effects:

[0029] By designing a quick-release mold core and an integrated ejection unit, in the event of a production anomaly, the mold core can be replaced and maintained directly on the injection molding machine without disassembling the entire mold. This greatly reduces downtime caused by maintenance and debugging, significantly improves the uptime and production flexibility of the injection molding machine, and significantly reduces the labor intensity and reliance on professional skills of operators. It also effectively avoids potential damage to the precision components of the mold during the traditional whole mold disassembly process, fundamentally solving the problems of low production efficiency and high production costs caused by frequent mold removal. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments 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.

[0031] Figure 1 This is a schematic diagram of the front structure of this utility model;

[0032] Figure 2 This is an exploded view of the entire utility model;

[0033] Figure 3 This is a cross-sectional view of the present invention;

[0034] Figure 4 This is a schematic diagram showing the positional relationship of the elastic ejector element of this utility model;

[0035] Figure 5 This is a cross-sectional view of the ejector unit of this utility model.

[0036] In the diagram: 1. Fixed mold fixing plate; 2. Moving mold fixing plate; 3. Fixed mold plate; 4. Mold foot; 5. Moving mold plate; 6. First locking component; 7. Sprue; 8. Elastic ejection element; 9. Female mold core; 10. Demolding process structure; 11. Male mold core; 12. Ejector pin; 13. Connecting component; 14. Ejector plate; 15. Second locking component. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] Example:

[0040] Please see Figures 1-5This utility model provides a technical solution: a plastic mold for quick mold core changing on an injection molding machine, including a fixed mold assembly and a moving mold assembly. The fixed mold assembly includes a fixed mold fixing plate 1 and a fixed template 3 disposed on the fixed mold fixing plate 1. The moving mold assembly includes a moving mold fixing plate 2, a moving template 5, and a mold foot 4 disposed between the moving mold fixing plate 2 and the moving template 5.

[0041] The fixed template 3 is detachably provided with a female mold core 9, and the movable template 5 is detachably provided with a male mold core 11;

[0042] The male mold core 11 is integrated with an ejection mechanism to form an ejection unit that can be detached from the entire driven mold assembly;

[0043] The fixed template 3 and / or the moving template 5 are provided with elastic ejection elements 8 for assisting in ejecting the female mold core 9 and / or the male mold core 11 during disassembly.

[0044] Specifically, by detachably setting the female mold core (9) and male mold core (11) on the fixed mold plate (3) and the moving mold plate (5), and integrating the male mold core (11) with the ejection mechanism into an ejection unit that can be disassembled as a whole, and supplemented by the elastic ejection element (8) set on the mold plate, the mold core can be quickly replaced without disassembling the entire mold on the injection molding machine, which greatly shortens the downtime caused by maintenance, mold cleaning or production change, significantly improves production efficiency and machine utilization, and effectively reduces the labor intensity and production cost of operators.

[0045] Preferably, the ejector unit includes:

[0046] male model 11;

[0047] Ejector pin 12 is inserted into the male mold core 11;

[0048] Ejector plate 14 for fixing ejector pin 12;

[0049] And the connecting piece 13 that connects the ejector plate 14 and the male mold core 11, so that the male mold core 11, ejector pin 12, ejector plate 14 and connecting piece 13 form a whole.

[0050] Preferably, the connector 13 can be a pull rod, which fixes the ejector plate 14 to the male mold core 11.

[0051] Specifically, this design makes the male mold core 11, ejector pin 12, ejector plate 14 and connector 13 form a stable whole. When disassembling and assembling the mold core, the operator can remove and install the entire ejection unit as a whole from the moving mold assembly at one time. This avoids the tedious one-by-one calibration and positioning of the small ejector pins 12 in the narrow machine space, thus greatly simplifying the operation process, effectively preventing bending, damage or assembly errors of the ejector pins 12 that may occur during disassembly and assembly, significantly improving mold change efficiency and operational reliability, and reducing the risk of damage to precision parts.

[0052] Preferably, both the female mold core 9 and the male mold core 11 are provided with a mold removal process structure 10.

[0053] Preferably, the mold removal process structure 10 can be a threaded hole, a draft groove, or a lifting hole.

[0054] Specifically, this design provides operators with standard and diverse points of force application, enabling them to safely and effortlessly remove the mold core from the cavity of the fixed mold plate 3 or the moving mold plate 5 using external tools such as screws, pry bars, or lifting tools. This effectively avoids damage to the mold core 9 and 11, scratches to personnel, and damage to its precision forming surfaces that may be caused by inconvenient manual operation or forced prying. Thus, while ensuring rapid mold change, it greatly improves the safety and convenience of operation and protects the long-term service life of the mold.

[0055] Preferably, the elastic ejection element 8 can be a spring, urethane, or a rubber pad, which is disposed in the mounting groove of the mold foot 4 and acts on the male mold core 11.

[0056] Specifically, this structure can immediately provide a stable initial ejection force when the second locking member 15 is released, automatically loosening the male mold core 11 and its integrated ejection unit from the cavity of the moving template 5 by a small displacement. This effectively overcomes the difficulty of removing the mold core and template due to vacuum adsorption or excessive tightness, making subsequent manual mold removal operations more labor-saving and smoother. It not only significantly improves mold changing efficiency, but also avoids scratches and damage to the male mold core 11 or the moving template 5 caused by forcibly prying with tools, ensuring the fitting accuracy and service life of the mold.

[0057] Preferably, the female mold core 9 is fixed to the fixed template 3 by the first locking member 6, and the male mold core 11 is fixed to the moving template 5 by the second locking member 15.

[0058] Preferably, the first locking member 6 and the second locking member 15 can be mold-locking screws.

[0059] Specifically, this fastening method achieves stable installation and quick release of the mold core through a simple and reliable mechanical connection. Operators only need to use a standard wrench to tighten or loosen the locking screws at the parting surface to complete the fixing and release of the mold core, without disassembling the main mold frame or using special hydraulic or electrical devices. This not only greatly simplifies the operation process and shortens the mold change time, but also reduces the skill requirements of operators and the dependence on tools. At the same time, this rigid connection method can ensure that the mold core maintains accurate positioning and stability when subjected to high injection pressure during the production process, fundamentally guaranteeing the molding quality of the product and achieving the core purpose of rapid mold change.

[0060] Preferably, the fixed mold plate 1 is provided with a detachable sprue 7.

[0061] Working principle: During a normal injection molding cycle, after mold closing, the female mold core 9 and male mold core 11 form a sealed cavity for filling under the fastening of the first locking member 6 and the second locking member 15. After mold opening, the ejector unit pushes the product out through the ejector pin 12 under the push of the injection molding machine ejector rod. When mold changing is required, the operator only needs to open the mold, disconnect the external utilities, and then loosen and remove the first locking member 6 on the fixed platen 3 and the second locking member 15 on the moving platen 5 in sequence. At this time, the pre-compressed elastic ejector element 8 will automatically loosen the male mold core 11 and its integrated ejector unit as a whole. Then, the female mold core 9 can be safely removed separately with the help of the mold removal process structure 10. Then, the male mold core 11, ejector pin 12, ejector plate 14 and connecting member 13 are extracted as a whole from the moving mold side as an ejector unit, so as to efficiently complete the replacement and maintenance of the entire set of mold cores on the injection molding machine. After that, the parts can be put back in the reverse order to quickly resume production.

[0062] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. 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 limitations, 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.

Claims

1. A plastic mold for quick mold core changing on an injection molding machine, comprising a fixed mold assembly and a moving mold assembly, wherein the fixed mold assembly comprises a fixed mold fixing plate (1) and a fixed template (3) disposed on the fixed mold fixing plate (1), and the moving mold assembly comprises a moving mold fixing plate (2), a moving template (5), and mold feet (4) disposed between the moving mold fixing plate (2) and the moving template (5), characterized in that: The fixed template (3) is detachably provided with a female mold core (9), and the moving template (5) is detachably provided with a male mold core (11). The male mold core (11) is integrated with an ejection mechanism to form an ejection unit that can be detached from the moving mold assembly as a whole; The fixed template (3) and / or the moving template (5) are provided with elastic ejection elements (8) for assisting in ejecting the female mold core (9) and / or the male mold core (11) during disassembly.

2. A plastic mold for quick mold core changing on an injection molding machine according to claim 1, characterized in that: The ejection unit includes: The male mold core (11); Ejector pin (12) inserted into the male mold core (11); Ejector plate (14) for fixing the ejector pin (12); And a connector (13) connecting the ejector plate (14) and the male mold core (11) so that the male mold core (11), ejector (12), ejector plate (14) and connector (13) form a whole.

3. A plastic mold for quick mold core changing on an injection molding machine according to claim 2, characterized in that: The connector (13) may be a pull rod, which fixes the ejector plate (14) to the male mold core (11).

4. A plastic mold for quick mold core changing on an injection molding machine according to claim 1, characterized in that: Both the female mold core (9) and the male mold core (11) are provided with a mold-removing process structure (10).

5. A plastic mold for quick mold core changing on an injection molding machine according to claim 4, characterized in that: The mold removal process structure (10) can be a threaded hole, a draft groove, or a lifting hole.

6. A plastic mold for quick mold core changing on an injection molding machine according to claim 1, characterized in that: The elastic ejection element (8) can be a spring, urethane rubber or a rubber pad, which is set in the mounting groove of the mold foot (4) and acts on the male mold core (11).

7. A plastic mold for quick mold core changing on an injection molding machine according to claim 1, characterized in that: The female mold core (9) is fixed to the fixed template (3) by the first locking member (6), and the male mold core (11) is fixed to the moving template (5) by the second locking member (15).

8. A plastic mold for quick mold core changing on an injection molding machine according to claim 7, characterized in that: The first locking member (6) and the second locking member (15) can be mold-locking screws.

9. A plastic mold for quick mold core changing on an injection molding machine according to claim 1, characterized in that: The fixed mold plate (1) is provided with a detachable sprue (7).

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