Mold convenient to demold

Abstract

The utility model provides a mold convenient to demold, which belongs to the technical field of molds and comprises a fixed mold plate, a movable mold plate and a movable mold plate, the movable mold plate can be close to or far away from the fixed mold plate, the movable mold plate is provided with a second mold core, and a cavity is formed between the first mold core and the second mold core; the pull-out assembly comprises a pull block and a pull rod, the pull block is detachably connected with the fixed mold plate and / or the first mold core, the pull rod is connected with the movable mold plate and / or the second mold core, the pull block is provided with a pull hole, and the pull rod is in interference fit with the pull hole. The mold has the beneficial effects that the pull rod is inserted into the broaching hole and is in interference fit with the broaching hole during mold closing, the pull rod pulls the pull block through the broaching hole during mold opening so as to pull a product from the first mold core to the second mold core, and meanwhile, the pull rod is separated from the broaching hole manually or through other specific structures of the structure, so that the product can be conveniently ejected and taken out subsequently.

Description

Technical Field

[0001] This utility model belongs to the field of mold technology and relates to a mold that is easy to demold. Background Technology

[0002] Injection molds are molds used in the injection molding process to solidify molten plastic into specific sizes and shapes.

[0003] In the existing technology, for the sake of aesthetic appearance, the injection point of the overmolded product is usually made on the inner surface of the product. The overmolding mold is similar to the inverted mold, with the outer surface of the product being the rear mold and the inner surface being the front mold. Because there are many ribs on the inner surface of the product, the overmolded product sticks to the front mold, making it difficult for the operator to remove the injection molded product.

[0004] For example, a utility model patent with application number CN202220231166.4 provides an injection mold, including: a panel; a fixed template, on which a gate connected to the cavity of the injection mold is provided; a sprue plate, which is disposed between the fixed template and the panel and abuts against the fixed template and the panel respectively; an elastic component, one end of which is disposed in the sprue plate and abuts against the gate, and the other end of which is disposed in the panel; and a nozzle, which passes through the panel and is inserted into the sprue plate.

[0005] In summary, some existing technical solutions involve bonding the product to the front mold, requiring operators to use tools to pry it out, which is inefficient and can easily damage the product surface, resulting in defective products. Therefore, there is considerable room for improvement. Utility Model Content

[0006] The purpose of this invention is to address the aforementioned problems in the existing technology by proposing a mold that facilitates demolding.

[0007] The objective of this utility model can be achieved through the following technical solution: a mold that facilitates demolding, comprising:

[0008] A template is provided, which includes a first mold core;

[0009] A movable template that can move closer to or further away from the fixed template, the movable template being provided with a second mold core, and a cavity being formed between the first mold core and the second mold core;

[0010] The pull-out assembly includes a pull block and a pull rod. The pull block is detachably connected to the fixed template and / or the first mold core, and the pull rod is connected to the moving template and / or the second mold core. The pull block is provided with a pull hole, and the pull rod is interference-fitted with the pull hole. The pull rod can be inserted into the pull hole and pull the pull block through the pull hole or separated from the pull hole.

[0011] In the aforementioned mold designed for easy demolding, the fixed template and / or the first mold core are provided with mounting holes, and the pull block is disposed in the mounting hole and can move along the hole direction of the mounting hole.

[0012] In the aforementioned mold designed for easy demolding, the sidewall of the mounting hole is provided with a first limiting part, and the pull block is provided with a second limiting part. A pull-out gap is formed between the first limiting part and the second limiting part, and the first limiting part can contact the second limiting part.

[0013] In the aforementioned mold designed for easy demolding, the distance of the pull-out gap is 6 mm.

[0014] In the aforementioned mold designed for easy demolding, the thickness of the second limiting part is greater than or equal to 6 mm.

[0015] In the aforementioned mold designed for easy demolding, the pull rod is provided with a rubber plug, which is interference-fitted with the pull hole. The pull rod contacts or separates from the pull hole through the rubber plug.

[0016] In the aforementioned mold designed for easy demolding, the moving template and / or the second mold core are provided with a first connecting portion, and the pull rod is provided with a second connecting portion. The pull rod is detachably connected to the first connecting portion of the moving template and / or the second mold core through the second connecting portion.

[0017] In the aforementioned mold designed for easy demolding, the number of pull-out components is multiple sets. The pull blocks of two sets of pull-out components are respectively located at the two feet of the first mold core, and the pull rods are respectively located at the two feet of the second mold core. The pull blocks of at least one set of pull-out components are located between the other two feet of the first mold core, and the pull rods are located between the other two feet of the second mold core.

[0018] The mold described above, which facilitates demolding, also includes an ejection mechanism. The ejection mechanism includes an ejector rod and a push plate. One end of the ejector rod is connected to the push plate, and the other end of the ejector rod passes through the moving template and is inserted into the second mold core.

[0019] In the aforementioned mold designed for easy demolding, the ejection mechanism further includes an elastic element disposed between the moving template and the push plate, with both ends of the elastic element connected to the moving template and the push plate, respectively.

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

[0021] 1. When the mold is closed, the tie rod is inserted into the pull hole and is interference-fitted with the pull hole. When the mold is opened, the tie rod pulls the pull block through the pull hole, thereby pulling the product from the first mold core to the second mold core. At the same time, the tie rod can be separated from the pull hole manually or by other specific structural structures to facilitate the subsequent ejection and removal of the product.

[0022] 2. The pull block is set in the mounting hole and can move along the hole direction of the mounting hole to ensure that the pull block can be used as a fixed template or part of the first mold core during injection molding. After injection molding is completed, the pull block can move along the hole direction of the mounting hole to pull the product from the first mold core to the second mold core.

[0023] 3. The pull-out gap formed between the first limiting part and the second limiting part allows the first limiting part and the second limiting part to approach each other and eventually make contact, so that the pull block pulls the product from the first mold core to the second mold core and is then limited, thereby separating the pull rod from the pull hole.

[0024] 4. The rubber plug and the pull hole are interference-fitted. The pull rod contacts or separates from the pull hole through the rubber plug. When the mold is closed, the pull rod is inserted into the pull hole through the rubber plug and is interference-fitted with the pull hole. When the mold is opened, the pull rod pulls the pull block through the rubber plug and the pull hole, thereby pulling the product from the first mold core to the second mold core. At the same time, the rubber plug is separated from the pull hole by manual means or other specific structural means, which facilitates the subsequent ejection and removal of the product.

[0025] 5. The pull rod is detachably connected to the first connecting part of the second mold core through the second connecting part. After the pull rod wears out due to prolonged pulling of the pull block through the pull hole to move the product from the first mold core to the second mold core, the pull rod can be disassembled and replaced in time to ensure good material pulling effect. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the mold for easy demolding according to the present invention.

[0027] Figure 2 for Figure 1 Enlarged view of part A.

[0028] Figure 3 This is a schematic diagram of the template structure of this utility model.

[0029] Figure 4 This is an exploded view of the template of this utility model.

[0030] Figure 5 This is a schematic diagram of the structure of the moving template of this utility model.

[0031] Figure 6 This is an exploded view of the moving template of this utility model.

[0032] In the diagram, 100 is the fixed template; 110 is the first mold core; 111 is the mounting hole; 112 is the first limiting part; 200 is the moving template; 210 is the second mold core; 220 is the first thread; 310 is the pull block; 311 is the pull hole; 312 is the second limiting part; 320 is the pull rod; 321 is the rubber plug; 322 is the second thread; 410 is the push rod; 420 is the push plate; and 430 is the elastic element. Detailed Implementation

[0033] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0034] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0035] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0036] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0038] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0039] like Figures 1-6 As shown, a mold that facilitates demolding, especially a plastic mold, includes: a fixed template 100, a movable template 200, and a pull-out assembly.

[0040] Plastic molds are tools used to manufacture plastic products. They are made by injecting molten plastic into a mold cavity, which then cools and solidifies to form the desired shape.

[0041] The template 100 is provided with a first mold core 110.

[0042] Specifically, the fixed mold plate 100 is the part of the mold connected to the stationary part of the injection molding machine. It usually includes structures such as a gating system. The gating system includes the main runner, branch runners, and gates, which are responsible for guiding the molten plastic into each cavity.

[0043] The movable template 200 can be close to or away from the fixed template 100. The movable template 200 is provided with a second mold core 210, and a cavity is formed between the first mold core 110 and the second mold core 210.

[0044] Specifically, the moving mold plate 200 is the part of the mold connected to the moving part of the injection molding machine, which is responsible for demolding from the plastic part when the mold is opened.

[0045] The pull-out assembly includes a pull block 310 and a pull rod 320. The pull block 310 is detachably connected to the fixed template 100 and / or the first mold core 110. The pull rod 320 is connected to the moving template 200 and / or the second mold core 210. The pull block 310 is provided with a pull hole 311. The pull rod 320 is interference-fitted with the pull hole 311. The pull rod 320 can be inserted into the pull hole 311 and pull the pull block 310 through the pull hole 311 or separate from the pull hole 311.

[0046] It is worth noting that in the existing technology, for the sake of aesthetic appearance, the injection point of the overmolding mold is generally made on the inner surface of the product. The overmolding mold is similar to the inverted mold, with the outer surface of the product being the rear mold and the inner surface being the front mold. Because there are many ribs on the inner surface of the product, the overmolded product sticks to the front mold, making it difficult for the operator to remove the injection molded product. The operator basically needs to use tools to pry the product out, which is inefficient and can easily damage the product surface, resulting in defective products.

[0047] In this embodiment, when the mold is closed, the pull rod 320 is inserted into the pull hole 311 and is interference-fitted with the pull hole 311. When the mold is opened, the pull rod 320 pulls the pull block 310 through the pull hole 311, thereby pulling the product from the first mold core 110 to the second mold core 210. At the same time, the pull rod 320 is separated from the pull hole 311 by manual means or other specific structural means, which facilitates the subsequent ejection and removal of the product.

[0048] like Figures 1-6 As shown, based on the above embodiment, the fixed template 100 and / or the first mold core 110 are provided with mounting holes 111, and the pull block 310 is disposed in the mounting hole 111 and can move along the hole direction of the mounting hole 111.

[0049] In this embodiment, the pull block 310 is disposed in the mounting hole 111 and can move along the hole direction of the mounting hole 111, so that the pull block 310 can be used as part of the fixed template 100 or the first mold core 110 during injection molding, so as to complete the injection molding. After the injection molding is completed, the pull block 310 can move along the hole direction of the mounting hole 111 to pull the product from the first mold core 110 to the second mold core 210.

[0050] like Figures 1-6 As shown, based on the above embodiment, the side wall of the mounting hole 111 is provided with a first limiting part 112, and the pull block 310 is provided with a second limiting part 312. A pull-out gap is formed between the first limiting part 112 and the second limiting part 312, and the first limiting part 112 can contact the second limiting part 312.

[0051] In this embodiment, the pull-out gap formed between the first limiting part 112 and the second limiting part 312 allows the first limiting part 112 and the second limiting part 312 to approach each other and eventually make contact, thereby causing the pull block 310 to pull the product from the first mold core 110 to the second mold core 210 and then be limited, thereby causing the pull rod 320 to separate from the pull hole 311.

[0052] Specifically, the distance of the pull-out gap L is 6mm.

[0053] Setting the pull-out gap distance L to 6mm ensures that the pull-out gap is not too large, making it easy to detach from the mounting hole 111, nor too small, so that the product is not fully pulled from the first mold core 110 to the second mold core 210.

[0054] Specifically, the thickness D of the second limiting part 312 is greater than or equal to 6 mm.

[0055] The thickness D of the second limiting part 312 is set to be greater than or equal to 6mm, which can effectively ensure that the pull block 310 is broken when the product is pulled from the first mold core 110 to the second mold core 210.

[0056] like Figures 1-6 As shown, based on the above embodiment, the pull rod 320 is provided with a rubber stopper 321, the rubber stopper 321 is interference-fitted with the pull hole 311, and the pull rod 320 contacts or separates from the pull hole 311 through the rubber stopper 321.

[0057] Specifically, the rubber stopper 321 can be made of nylon or rubber.

[0058] In this embodiment, the rubber plug 321 is interference-fitted with the pull hole 311, and the pull rod 320 contacts or separates from the pull hole 311 through the rubber plug 321. When the mold is closed, the pull rod 320 is inserted into the pull hole 311 through the rubber plug 321 and is interference-fitted with the pull hole 311. When the mold is opened, the pull rod 320 pulls the pull block 310 through the rubber plug 321 and the pull hole 311, thereby pulling the product from the first mold core 110 to the second mold core 210. At the same time, the rubber plug 321 is separated from the pull hole 311 by manual means or other specific structural means, which facilitates the subsequent ejection and removal of the product.

[0059] In addition, the rubber stopper 321 can also reduce noise and vibration: by absorbing and dispersing vibration energy, it significantly reduces the noise and unnecessary vibration generated during the operation of mechanical equipment, improving user experience and work efficiency.

[0060] like Figures 1-6 As shown, based on the above embodiment, the moving template 200 and / or the second mold core 210 are provided with a first connecting part, and the pull rod 320 is provided with a second connecting part. The pull rod 320 is detachably connected to the first connecting part of the moving template 200 and / or the second mold core 210 through the second connecting part.

[0061] Specifically, the structure of the first connecting part and the second connecting part is not specifically limited. It can be a locking block or a locking groove, and the first connecting part and the second connecting part can be locked together; or it can be a tenon and a mortise, and the tenon and the mortise can be connected by tenon and mortise; or it can be two connecting holes and connected by fasteners, as long as the pull rod 320 can be detachably connected to the first connecting part of the second mold core 210 through the second connecting part.

[0062] In this embodiment, the pull rod 320 is detachably connected to the first connecting part of the second mold core 210 via the second connecting part. After the pull rod 320 wears out due to pulling the pull block 310 through the pull hole 311 for a long time, thereby pulling the product from the first mold core 110 to the second mold core 210, the pull rod 320 can be disassembled and replaced in time to ensure good material pulling effect.

[0063] like Figures 1-6As shown, based on the above embodiment, the first connecting part is a first thread 220, the second connecting part is a second thread 322, and the second thread 322 can be threadedly connected to the first thread 220.

[0064] In this embodiment, the second thread 322 can be threadedly connected to the first thread 220, thereby allowing the pull rod 320 to be detachably connected to the first connecting part of the second mold core 210 via the second connecting part.

[0065] like Figures 1-6 As shown, based on the above embodiment, the number of pull-out components is multiple sets. The pull blocks 310 of two sets of pull-out components are respectively located at the two feet of the first mold core 110 and the pull rods 320 are respectively located at the two feet of the second mold core 210. The pull blocks 310 of at least one set of pull-out components are located between the other two feet of the first mold core 110 and the pull rods 320 are located between the other two feet of the second mold core 210.

[0066] In this embodiment, during actual implementation, two or more sets of pull blocks 310 can be located between the other two legs of the first mold core 110 and the pull rod 320 can be located between the other two legs of the second mold core 210.

[0067] like Figures 1-6 As shown, based on the above embodiment, it also includes an ejection mechanism, which includes an ejector rod 410 and a push plate 420. One end of the ejector rod 410 is connected to the push plate 420, and the other end of the ejector rod 410 passes through the moving template 200 and is disposed in the second mold core 210.

[0068] In this embodiment, one end of the push rod 410 is connected to the push plate 420 and the other end of the push rod 410 passes through the moving template 200 and is inserted into the second mold core 210. The push plate 420 can approach the moving template 200 to push the product out of the second mold core 210.

[0069] like Figures 1-6 As shown, based on the above embodiment, the ejection mechanism further includes an elastic element 430, which is disposed between the moving template 200 and the push plate 420. The two ends of the elastic element 430 are respectively connected to the moving template 200 and the push plate 420.

[0070] In this embodiment, the two ends of the elastic member 430 are connected to the moving template 200 and the push plate 420 respectively, so the push plate 420 can be driven to approach the moving template 200 to push the product out of the second mold core 210.

Claims

1. A mold that facilitates demolding, characterized in that, include: A template is provided, which includes a first mold core; A movable template that can move closer to or further away from the fixed template, the movable template being provided with a second mold core, and a cavity being formed between the first mold core and the second mold core; The pull-out assembly includes a pull block and a pull rod. The pull block is detachably connected to the fixed template and / or the first mold core, and the pull rod is connected to the moving template and / or the second mold core. The pull block is provided with a pull hole, and the pull rod is interference-fitted with the pull hole. The pull rod can be inserted into the pull hole and pull the pull block through the pull hole or separated from the pull hole.

2. The mold for easy demolding as described in claim 1, characterized in that: The fixed template and / or the first mold core are provided with mounting holes, and the pull block is disposed in the mounting hole and can move along the hole direction of the mounting hole.

3. The mold for easy demolding as described in claim 2, characterized in that: The side wall of the mounting hole is provided with a first limiting part, and the pull block is provided with a second limiting part. A pull-out gap is formed between the first limiting part and the second limiting part, and the first limiting part can contact the second limiting part.

4. The mold for easy demolding as described in claim 3, characterized in that: The distance of the pull-out gap is 6mm.

5. The mold for easy demolding as described in claim 3, characterized in that: The thickness of the second limiting part is greater than or equal to 6 mm.

6. The mold for easy demolding as described in claim 1, characterized in that: The pull rod is provided with a rubber plug, which is interference-fitted with the pull hole. The pull rod contacts or separates from the pull hole through the rubber plug.

7. The mold for easy demolding as described in claim 1, characterized in that: The moving template and / or the second mold core are provided with a first connecting part, and the pull rod is provided with a second connecting part. The pull rod is detachably connected to the first connecting part of the moving template and / or the second mold core through the second connecting part.

8. The mold for easy demolding as described in claim 1, characterized in that: The number of pull-out components is multiple sets, with the pull blocks of two sets of pull-out components located at the two feet of the first mold core and the pull rods located at the two feet of the second mold core respectively, and the pull blocks of at least one set of pull-out components located between the other two feet of the first mold core and the pull rods located between the other two feet of the second mold core.

9. A mold for easy demolding as described in claim 1, characterized in that: It also includes an ejection mechanism, which includes an ejector rod and a push plate. One end of the ejector rod is connected to the push plate, and the other end of the ejector rod passes through the moving template and is inserted into the second mold core.

10. A mold for easy demolding as described in claim 9, characterized in that: The ejection mechanism also includes an elastic element, which is disposed between the moving template and the push plate, and the two ends of the elastic element are respectively connected to the moving template and the push plate.

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