Cut-off structure of die flow gate stub bar
Through the cutting structure of the gate material head in the mold, the problem of secondary processing after side casting injection molding is solved, and the rapid cutting of the gate material head is achieved, reducing costs and improving efficiency.
Patent Information
- Application Number
- CN202421874904.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-05
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-08-05
AI Technical Summary
In the prior art, secondary processing of the product edge structure needs to be performed after side cast injection molding, resulting in increased costs and reduced efficiency.
A cutting structure for gate material heads in molds is designed. Through the cooperation of the molding part, feed flow channel and gate thimble, the rapid cutting of gate material heads is achieved to avoid the formation of edge structures.
It effectively avoids the problem of secondary processing gates, reduces the secondary processing cost of products, and improves processing efficiency.
Smart Images
Figure CN223045075U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of cutting the sprue of a mold, and particularly relates to a cutting structure for the sprue of a mold. Background Art
[0002] An injection mold is a type of mold, usually used for the injection molding of plastic products. For the injection molding of plastic products, the direct gating or side gating method is often used for injection molding. For the side gating method, the material is generally injected into the product through a side gate. This operation mode will result in more edge structures on the product after molding. Therefore, after the injection molding of the product is completed, it is necessary to cut off its edge structures, which is the secondary processing gate problem that appears after the injection molding of the product. If the sprue can be cut off inside the mold, then the formation of edge structures can be effectively avoided, so as to reduce the cost of manual secondary processing. Summary of the Utility Model
[0003] The utility model overcomes the deficiencies of the prior art and provides a cutting structure for the sprue of a mold to solve the problems existing in the prior art.
[0004] To achieve the above object, the technical solution adopted by the utility model is: a cutting structure for the sprue of a mold, which cuts off the sprue of the molded product in the mold, including
[0005] A molding part, the molding part includes a fixed mold insert and a movable mold insert. Guide grooves are provided on both the fixed mold insert and the movable mold insert. The two guide grooves are located on the same straight line. After the fixed mold insert and the movable mold insert are fitted together, an injection cavity for the molded product is formed;
[0006] A feed runner, the feed runner guides the material into the injection cavity;
[0007] A gate ejector pin, the gate ejector pin is located in the guide groove and moves along the length direction of the guide groove to cut off the material port of the feed runner from the injection cavity.
[0008] In a preferred embodiment of the utility model, it further includes an upper mold base, and the fixed mold insert is located in the upper mold base.
[0009] In a preferred embodiment of the utility model, the number of the fixed mold inserts is several and they are distributed at intervals along the length direction of the upper mold base.
[0010] In a preferred embodiment of the utility model, the number of the gate ejector pins is the same as the number of the fixed mold inserts and they correspond to each other one by one.
[0011] In a preferred embodiment of the present utility model, it further includes a top plate, the gate ejector pin is installed on the top plate, and the top plate drives the gate ejector pin to move in the guiding groove.
[0012] In a preferred embodiment of the present utility model, a return spring is arranged on the top plate, and the gate ejector pin is installed on the top plate through the return spring.
[0013] The present utility model solves the defects existing in the background art and has the following beneficial effects:
[0014] 1. The cutting structure of the gate stock in the mold of the present utility model realizes the rapid cutting of the gate stock inside the mold, effectively avoiding the problem of secondary processing of the gate, thereby avoiding the formation of the edge structure of the product, being able to effectively reduce the secondary processing cost of the product, and improving the processing efficiency of the product;
[0015] 2. By arranging a return spring on the top plate, the gate ejector pin can be quickly reset to ensure the continuity of the work of the gate ejector pin, thereby improving the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The following further illustrates the present utility model in conjunction with the drawings and embodiments;
[0017] Figure 1 is a schematic diagram of the overall structure of a preferred embodiment of the present utility model;
[0018] Figure 2 is a schematic diagram of the partial structure of a preferred embodiment of the present utility model;
[0019] Figure 3 is a partial cross-sectional view of a preferred embodiment of the present utility model;
[0020] Figure 4 is Figure 3 the enlarged view of part A in
[0021] In the figure: 10, forming part; 11, fixed mold insert; 12, moving mold insert; 101, guiding groove; 20, feed runner; 30, gate ejector pin; 40, upper mold base; 50, top plate; 60, return spring. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0022] The following will disclose multiple embodiments of the present utility model in the form of diagrams. For the sake of clarity, many practical details will be described together in the following description. However, it should be understood that these practical details are not used to limit the present utility model. That is to say, in some embodiments of the present utility model, these practical details are not necessary. In addition, for the purpose of simplifying the diagrams, some conventional structures and components will be shown in a simple schematic manner in the diagrams.
[0023] In addition, in the present utility model, descriptions such as "first", "second", etc. are only for descriptive purposes, not specifically referring to the order or sequence, nor are they used to limit the present utility model. They are merely used to distinguish components or operations described with the same technical terms, and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.
[0024] This embodiment provides a cutting structure for the gate stock in the mold, which cuts off the gate stock of the molded product in the mold, effectively avoiding the problem of secondary processing of the gate, thereby avoiding the formation of the edge structure of the product, being able to effectively reduce the secondary processing cost of the product, and improving the processing efficiency of the product.
[0025] Combined with Figures 1 to 4 As shown, the cutting structure for the gate stock in the mold of this embodiment includes a molding part 10, a feeding runner 20, and a gate ejector pin 30. The molding part 10 forms the product, and the feeding runner 20 guides the molten material into the molding part 10 to achieve the molding operation of the product. The gate ejector pin 30 can cut off the gate stock, thereby avoiding the problem of secondary processing of the gate.
[0026] In this embodiment, the cutting structure for the gate stock in the mold further includes a top plate 50. The gate ejector pin 30 is installed on the top plate 50, and the top plate 50 drives the gate ejector pin 30 to move, thereby cutting off the gate stock.
[0027] Furthermore, a return spring 60 is arranged on the top plate 50. The gate ejector pin 30 is installed on the top plate 50 through the return spring 60. The presence of the return spring 60 can quickly reset the gate ejector pin 30 to ensure the continuity of the operation of the gate ejector pin 30, thereby improving the processing efficiency.
[0028] Combined with Figure 1 And Figure 2As shown in the figure, the molding part 10 of this embodiment includes a fixed mold insert 11 and a movable mold insert 12. Guide grooves 101 are provided on both the fixed mold insert 11 and the movable mold insert 12. The two guide grooves 101 are located on the same straight line. After the fixed mold insert 11 and the movable mold insert 12 are fitted together, an injection cavity for forming the product is formed. The feed runner 20 guides the material into the injection cavity. The gate ejector pin 30 is located in the guide groove 101 and moves along the length direction of the guide groove 101 to cut off the material port of the feed runner 20 from the injection cavity. The molten material is introduced into the injection cavity through the material port of the feed runner 20 to realize the injection molding of the product. After the product is initially formed, the top plate 50 drives the gate ejector pin 30, so that the gate ejector pin 30 quickly cuts off the gate sprue inside the mold, thus avoiding the problem of secondary processing of the gate.
[0029] In this embodiment, the cutting structure of the gate sprue inside the mold further includes an upper mold base 40. The fixed mold insert 11 is located inside the upper mold base 40. The number of fixed mold inserts 11 in this embodiment is several and they are spaced along the length direction of the upper mold base 40. The existence of multiple fixed mold inserts 11 forms an injection cavity with the movable mold insert 12, realizing stable injection molding of the product.
[0030] Specifically, the number of gate ejector pins 30 is the same as the number of fixed mold inserts 11 and they correspond one by one. Multiple gate ejector pins 30 are all installed on the top plate 50 and are driven uniformly by the top plate 50, realizing the quick cutting of the gate sprue inside.
[0031] In actual use of the cutting structure of the gate sprue inside the mold of this embodiment, the molten material is introduced into the injection cavity through the feed runner 20 to realize the injection molding of the product. After the product is initially formed, the top plate 50 drives the gate ejector pin 30, so that the gate ejector pin 30 quickly cuts off the gate sprue inside the mold, thus avoiding the problem of secondary processing of the gate.
[0032] All in all, the cutting structure of the gate sprue inside the mold of this embodiment realizes the quick cutting of the gate sprue inside the mold, effectively avoiding the problem of secondary processing of the gate, thereby avoiding the formation of the edge structure of the product, being able to effectively reduce the secondary processing cost of the product and improve the processing efficiency of the product.
[0033] Although the present utility model has been described above with reference to various embodiments, it should be understood that many changes and modifications can be made without departing from the scope of the present utility model. That is to say, the methods, systems, devices, etc. discussed above are all examples. Various configurations can be appropriately omitted, replaced, or various processes or components can be added. For example, in an alternative configuration, the method can be executed in an order different from the described order, and / or various stages can be added, omitted, and / or combined. Moreover, the features described with respect to certain configurations can be combined in various other configurations. Different aspects and elements of the configuration can be combined in a similar manner. In addition, with the development of technology, many elements are only examples and do not limit the scope of the present disclosure or the claims.
[0034] Specific details are given in the specification to provide a thorough understanding of the exemplary configurations including the implementation. However, the configurations can be practiced without these specific details. For example, well-known circuits, processes, algorithms, structures, and technologies have been shown without unnecessary details to avoid obscuring the configurations. The description only provides exemplary configurations and does not limit the scope, applicability, or configuration of the claims. Instead, the foregoing description of the configurations will provide those skilled in the art with an enabling description for implementing the described technology. Various changes can be made to the functions and arrangements of the elements without departing from the spirit or scope of the present disclosure.
[0035] In addition, although each operation can be described as a sequential process, many operations can be performed in parallel or simultaneously. Additionally, the order of the operations can be rearranged. A process may have other steps. Moreover, examples of the method can be implemented by hardware, software, firmware, middleware, code, a hardware description language, or any combination thereof. When implemented in software, firmware, middleware, or code, the program code or code segments for performing the necessary tasks can be stored in a non-transitory computer-readable medium such as a storage medium and executed by a processor to perform the described tasks.
[0036] In summary, it is intended that the above detailed description be considered illustrative rather than restrictive, and it should be understood that the claims (including all equivalents) are intended to define the spirit and scope of the present utility model. The above embodiments should be understood as only illustrative of the present utility model and not used to limit the protection scope of the present utility model. After reading the content recorded in the present utility model, those skilled in the art can make various changes or modifications to the present utility model, and these equivalent changes and modifications also fall within the scope defined by the claims of the present utility model.
Claims
1. A cutting structure for a gate head in a mold, which cuts off the gate head of a molded product in a mold, characterized in that: include A molding part (10), the molding part (10) comprising a fixed mold insert (11) and a movable mold insert (12), the fixed mold insert (11) and the movable mold insert (12) are both provided with guide grooves (101), the two guide grooves (101) are located on the same straight line, and after the fixed mold insert (11) and the movable mold insert (12) are fitted together, an injection molding cavity of a molded product is formed; A feed channel (20), wherein the feed channel (20) guides the material into the injection molding cavity; A gate ejector pin (30), the gate ejector pin (30) is located in the guide groove (101) and moves along the length direction of the guide groove (101) to separate the material port of the feed channel (20) from the injection molding cavity.
2. A cutting structure for a mold gate head according to claim 1, characterized in that: It also comprises an upper die seat (40), wherein the fixed die insert (11) is located in the upper die seat (40).
3. A cutting structure for a mold gate head according to claim 2, characterized in that: The fixed die inserts (11) are in multiple numbers and are distributed at intervals along the length direction of the upper die base (40).
4. A cutting structure for a mold gate head according to claim 3, characterized in that: The number of the gate ejector pins (30) is consistent with the number of the fixed mold inserts (11), and they correspond one to one.
5. The cutting structure of the mold gate head according to claim 1, characterized in that: It also includes a top plate (50), the gate ejector pin (30) is mounted on the top plate (50), and the gate ejector pin (30) is driven by the top plate (50) to move in the guide groove (101).
6. A cutting structure for a mold gate head according to claim 5, characterized in that: A return spring (60) is provided on the top plate (50), and the gate ejector pin (30) is mounted on the top plate (50) via the return spring (60).