Water gap cutting shaping mold for injection molding part
By designing the injection molding part water cutting port shaping mold, using the combination of guide grooves, inserts and cutter modules, the water ports are quickly and accurately removed during the injection molding process, solving the problems of burrs and cracks in traditional methods, and improving product quality and production efficiency.
Patent Information
- Application Number
- CN202421512385.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-06-28
Smart Images
Figure CN222755953U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of plastic product production, in particular to a water cutout shaping die for an injection molded part. Background Art
[0002] Injection molding is a commonly used plastic processing method, which injects molten plastic material into the mold and forms the desired product shape after cooling and solidification. In the injection molding process, the injection port is the key part connecting the mold and the plastic material supply, which allows the molten plastic to enter the mold cavity. The mold cavity is the part inside the mold that forms the shape of the product, and the sprue is the entrance mark left on the product after the plastic material enters the mold cavity.
[0003] In traditional injection molding processes, in order to improve production efficiency and reduce costs, mold designs usually include multiple cavities and multiple injection ports. In this way, multiple products can be produced at the same time, but this also requires additional processing steps after the product is molded. When the product is taken out of the mold, it is usually connected to the sprue, which needs to be manually fixed on a special fixture, and then the sprue is cut off to complete the final shape of the product.
[0004] In this regard, during the injection molding process, a cutter is set in the module to remove the sprue. This method removes the sprue through the interaction between the cutter and the sprue while the product is ejected after the mold is opened. However, this method has some shortcomings. Burrs may be left at the removed sprue due to the contact and cutting process between the cutter and the sprue. These burrs not only affect the appearance quality of the product, but also require additional processes to remove. During the process of cutting the sprue, if there is no appropriate auxiliary mold component to press or support the molded product, the molded product will crack due to uneven force. This will seriously affect the structural integrity and durability of the product. Utility Model Content
[0005] The utility model aims to avoid the shortcomings of the prior art and provide an injection molded part water outlet shaping mold, which can quickly remove the water outlet before the product is demoulded and has the advantage of accurate water outlet removal.
[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0007] Provide injection molding parts cutting nozzle shaping mold, including
[0008] The upper and lower molds cooperate with each other.
[0009] A mold cavity for molding a product is formed between the upper mold and the lower mold. The upper mold is provided with a glue inlet flow channel, which is connected to the mold cavity. The connection between the glue inlet flow channel and the mold cavity is a water inlet position.
[0010] The upper mold is provided with a first guide groove and a second guide groove, wherein the first guide groove is located above the water inlet and points to the top of the upper mold.
[0011] The second guide groove is located on the side of the water inlet and is perpendicular to the first guide groove.
[0012] A first insert is inserted into the second guide groove, the first insert is movable and fits above the water inlet, a cutter module is inserted into the first guide groove, and the cutter head of the cutter module points to the water inlet.
[0013] The cutter module is connected to a pressurizing mechanism, and the pressurizing mechanism drives the cutter module to move.
[0014] In some embodiments, the lower mold is provided with a third guide groove and a fourth guide groove, wherein the third guide groove is located below the water inlet and points to the bottom of the lower mold.
[0015] The fourth guide groove is located on the side of the water inlet and is perpendicular to the third guide groove.
[0016] A second insert is inserted into the fourth guide groove, and the second insert is movable and fits below the water inlet. A knife seat is inserted into the third guide groove, and a groove pointing to the knife head is provided on the knife seat, and a knife edge protection structure is provided in the groove.
[0017] In some embodiments, the blade protection structure includes a boss extending from the inner wall of the groove to the middle of the groove, and the boss abuts against the cutter module. When the cutter module abuts against the boss, a distance is left between the blade of the cutter module and the groove.
[0018] In some embodiments, the cutter module includes a guide block, which moves in the first guide groove, the cutter head is connected to the guide block, the cross-section of the cutter head is V-shaped, and a step surface is formed at the connection between the guide block and the cutter head, and the boss abuts against the step surface.
[0019] In some embodiments, the first insert is connected to a first guide column, and the first guide column drives the first insert to move.
[0020] In some embodiments, the tool holder is connected to a first ejector pin, and the tool holder is controlled to move in the third guide groove by the first ejector pin.
[0021] In some embodiments, the second insert is connected to a second guide post, and the second guide post drives the second insert to move.
[0022] In some embodiments, the pressurizing mechanism includes a hydraulic cylinder connected to the cutter module.
[0023] In some embodiments, a buffer rubber is provided at the junction of the step surface and the boss.
[0024] In the injection molding part sprue cutting shaping mold of the utility model, the first insert fills the sprue position during the molding process to ensure that the glue inlet flow channel and the mold cavity form a continuous flow channel, which helps to inject molten plastic into the mold cavity more smoothly and improve the molding efficiency. After the product is molded, the sprue position is exposed by moving the first insert instead of opening the mold, and then the sprue is cut inside the mold using a cutter module. This method avoids product deformation or damage that may be caused by opening the mold. The pressure mechanism is used to drive the cutter head to move down quickly to achieve rapid cutting of the sprue. This fast operation can reduce the production cycle time and improve production efficiency. Since the sprue is cut inside the mold and there is auxiliary positioning of the upper mold, the cutting process can be more accurately controlled, the generation of burrs and cracks can be reduced, and thus the product quality can be improved. This design allows the sprue to be automatically cut inside the mold, reducing the need for manual operation and improving the degree of automation of production. By reducing manual operation and improving the degree of automation, labor costs and scrap rates caused by improper operation can be reduced, thereby reducing overall production costs. The automated cutting process can ensure that the sprue cutting of each product is consistent, improving the consistency and reliability of the product. Since the frequent contact between mold opening and mold is reduced, the wear of mold and equipment can be reduced and the service life of equipment can be extended. This design allows easier maintenance and adjustment of molds to adapt to different product requirements or for rapid product changeover. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 It is a structural schematic diagram of a water cutout shaping mold for an injection molded part according to a specific implementation mode of the utility model.
[0026] Figure 2 It is a structural schematic diagram of the working state of the cutter head and the cutter seat according to a specific implementation mode of the utility model.
[0027] Reference numerals:
[0028] 1. Upper mold; 2. Lower mold; 3. Mold cavity; 4. Glue inlet channel; 5. Water inlet position; 6. First guide groove; 7. Second guide groove; 8. First insert; 9. Cutter module, 91, guide block, 92, Cutter head; 11. Third guide groove; 12. Fourth guide groove; 13. Second insert; 14. Cutter seat; 15. Groove; 16. Boss; 17. Step surface; 18. First guide column; 19. First ejector pin; 20. Second guide column; 21. Buffer rubber. DETAILED DESCRIPTION
[0029] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.
[0030] The terms used in the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The singular forms "a", "the" and "the" used in the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.
[0031] It should be understood that although the terms "first", "second", "third", etc. may be used to describe various information in the present invention, this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. Example 1
[0032] The injection molding part cutting water outlet shaping mold disclosed in this embodiment is as follows: Figure 1~2 Shown, including
[0033] The upper mold 1 and the lower mold 2 cooperate with each other.
[0034] A mold cavity 3 for molding a product is formed between the upper mold 1 and the lower mold 2. The upper mold 1 is provided with a glue inlet flow channel 4, which is connected to the mold cavity 3. The connection between the glue inlet flow channel 4 and the mold cavity 3 is a water inlet position 5.
[0035] Specifically, the glue inlet channel 4 is used to input molding glue, so that the connection position between the glue channel and the mold cavity 3 is a redundant part, namely the sprue position 5, and the useless part needs to be removed by cutting off the sprue position 5.
[0036] The upper mold 1 is provided with a first guide groove 6 and a second guide groove 7. The first guide groove 6 is located above the water inlet 5 and points to the top of the upper mold 1.
[0037] The second guide groove 7 is located on the side of the water inlet 5 and is perpendicular to the first guide groove 6.
[0038] Specifically, the first guide groove 6 and the second guide groove 7 are perpendicular to each other.
[0039] A first insert 8 is inserted into the second guide groove 7, and the first insert 8 is movable and fits above the water inlet position 5. A cutter module 9 is inserted into the first guide groove 6, and a cutter head 92 of the cutter module 9 points to the water inlet position 5. The cutter module 9 is connected to a pressurizing mechanism, and the pressurizing mechanism drives the cutter module 9 to move.
[0040] Specifically, since the first guide groove 6 and the second guide groove 7 are perpendicular to each other, when molding the product, the first insert 8 is first filled on the sprue position 5, so that the glue inlet channel 4 and the mold cavity 3 are continuous channels, which is convenient for molding; after the product is molded, the first insert 8 is moved to make the first insert 8 leave the sprue position 5, and at this time the cutter head 92 of the cutting module 9 falls on the sprue position 5. Without opening the mold, the cutter head 92 is driven downward by the pressure mechanism to quickly cut off the sprue, thereby avoiding the problem of cutting the sprue without pressing the product after the mold is opened, resulting in cutting defects or affecting product quality.
[0041] In this embodiment, the lower mold is provided with a third guide groove 11 and a fourth guide groove 12. The third guide groove 11 is located below the water inlet position 5 and points to the bottom of the lower mold 2.
[0042] The fourth guide groove 12 is located on the side of the water inlet 5 and is perpendicular to the third guide groove 11.
[0043] A second insert 13 is inserted into the fourth guide groove 12, and the second insert 13 is movable and fits below the water inlet position 5. A tool holder 14 is inserted into the third guide groove 11, and the tool holder 14 is provided with the groove 15 pointing to the tool head 92, and the groove 15 is provided with a tool edge protection structure.
[0044] Specifically, since the third guide groove 11 and the fourth guide groove 12 are perpendicular to each other, when molding the product, the fourth insert is first filled under the water inlet position 5, so that the glue inlet channel 4 and the mold cavity 3 are continuous channels, which is convenient for molding; when the water inlet is cut after the product is molded, if there is no protection for the cutter head 92, the cutter head 92 will be damaged very quickly. At this time, after the product is molded and the second insert 13 is removed, the tool seat 14 can be moved to the water inlet position 5. The tool seat 14 is provided with a blade protection structure, so the blade can be prevented from being severely worn.
[0045] In this embodiment, the blade protection structure includes a boss 16 extending from the inner wall of the groove 15 to the middle of the groove 15, and the boss 16 abuts against the cutter module 9. When the cutter module 9 abuts against the boss 16, a distance is left between the blade of the cutter module 9 and the groove 15.
[0046] Specifically, since the boss 16 in the groove 15 can abut against the cutter module 9, the cutter head 92 can be suspended to prevent the cutter head 92 from continuing to move downward after cutting, and the cutter head 92 can be prevented from contacting a relatively large part of the mold and being damaged.
[0047] In this embodiment, the cutter module 9 includes a guide block 91, which moves in the first guide groove 6. The cutter head 92 is connected to the guide block 91. The cross-section of the cutter head 92 is V-shaped. A step surface 17 is formed at the connection between the guide block 91 and the cutter head 92, and the boss 16 abuts against the step surface 17.
[0048] Specifically, the boss 16 abuts against the step surface 17 to prevent further downward movement, so that the boss 16 hinders the cutter head 92 from continuing to move forward and avoids the problem of hitting hard parts and being worn, thereby effectively extending the service life of the cutter head 92.
[0049] In this embodiment, the first insert 8 is connected to a first guide column 18 , and the first guide column 18 drives the first insert 8 to move.
[0050] In this embodiment, the tool holder 14 is connected to a first ejector pin 19 , and the tool holder 14 is controlled to move in the third guide groove 11 by the first ejector pin 19 .
[0051] In this embodiment, the second insert 13 is connected to a second guide column 20 , and the second guide column 20 drives the second insert 13 to move.
[0052] In this embodiment, the pressurizing mechanism includes a hydraulic cylinder, and the hydraulic cylinder is connected to the cutter module 9 .
[0053] Specifically, the hydraulic cylinder can move the cutter module 9 conveniently and accurately.
[0054] In this embodiment, a buffer rubber 21 is provided at the junction of the step surface 17 and the boss 16 .
[0055] Specifically, the buffer rubber can also reduce the collision between the step surface 17 and the boss 16. Unless otherwise specifically stated, the relative arrangement of the components and steps, the numerical expressions and the numerical values described in these embodiments do not limit the scope of the present application. At the same time, it should be understood that for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to ordinary technicians in the relevant fields may not be discussed in detail, but in appropriate cases, the techniques, methods and equipment should be regarded as part of the authorized specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further discussed in subsequent figures.
[0056] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.
[0057] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.
[0058] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.
[0059] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A mold for shaping a water cutout of an injection molded part, characterized in that: include The upper and lower molds cooperate with each other. A mold cavity for molding a product is formed between the upper mold and the lower mold. The upper mold is provided with a glue inlet flow channel, which is connected to the mold cavity. The connection between the glue inlet flow channel and the mold cavity is a water inlet position. The upper mold is provided with a first guide groove and a second guide groove, wherein the first guide groove is located above the water inlet and points to the top of the upper mold. The second guide groove is located on the side of the water inlet and is perpendicular to the first guide groove. A first insert is inserted into the second guide groove, the first insert is movable and fits above the water inlet, a cutter module is inserted into the first guide groove, and the cutter head of the cutter module points to the water inlet. The cutter module is connected to a pressurizing mechanism, and the pressurizing mechanism drives the cutter module to move.
2. The injection molding part water cut shaping mold according to claim 1, characterized in that: The lower mold is provided with a third guide groove and a fourth guide groove, wherein the third guide groove is located below the water inlet and points to the bottom of the lower mold. The fourth guide groove is located on the side of the water inlet and is perpendicular to the third guide groove. A second insert is inserted into the fourth guide groove, and the second insert is movable and fits below the water inlet. A knife seat is inserted into the third guide groove, and a groove pointing to the knife head is provided on the knife seat, and a knife edge protection structure is provided in the groove.
3. The injection molding part water cut shaping mold according to claim 2, characterized in that: The blade protection structure includes a boss extending from the inner side wall of the groove to the middle of the groove, and the boss abuts against the cutter module. When the cutter module abuts against the boss, a distance is left between the blade of the cutter module and the groove.
4. The injection molding part water cut shaping mold according to claim 3, characterized in that: The cutter module includes a guide block, which moves in the first guide groove. The cutter head is connected to the guide block. The cross section of the cutter head is V-shaped. A step surface is formed at the connection between the guide block and the cutter head, and the boss abuts against the step surface.
5. The injection molding part water cut shaping mold according to claim 1, characterized in that: The first insert is connected to a first guide column, and the first guide column drives the first insert to move.
6. The injection molding part water cut shaping mold according to claim 2, characterized in that: The knife seat is connected to a first ejector pin, and the knife seat is controlled to move in the third guide groove by the first ejector pin.
7. The injection molding part water cut shaping mold according to claim 3, characterized in that: The second insert is connected to a second guide column, and the second guide column drives the second insert to move.
8. The injection molding part water cut shaping mold according to claim 1, characterized in that: The pressurizing mechanism comprises a hydraulic cylinder, and the hydraulic cylinder is connected to the cutter module.
9. The injection molding part water cut shaping mold according to claim 4, characterized in that: A buffer rubber is provided at the junction of the step surface and the boss.