Hot runner medical mold

Abstract

The utility model discloses a hot runner medical mold, which relates to the technical field of molds, and comprises a main body structure and a fixed mold fixing plate, and the modular assembly is arranged on one side of the fixed mold fixing plate and comprises a hot runner plate, the hot runner plate is fixedly connected to one side of the fixed mold fixing plate, one side of the hot runner plate is fixedly connected with a fixed mold cavity plate, one side of the fixed mold cavity plate is fixedly connected with a movable mold cavity plate, and the movable mold cavity plate is fixedly connected with the movable mold cavity plate. One side of the movable mold cavity plate is fixedly connected with a rear mold base plate; by adopting the hot runner plate consisting of the upper-layer splitter plate and the lower-layer splitter plate (comprising a plurality of splitter base plates) and matching with the first sprue bush and the second sprue bush, a splitting path can be flexibly adjusted according to different product requirements, so that plastic melts are uniformly distributed in the runner, the consistency of product quality is remarkably improved, and the production cost is reduced. The problem that a traditional hot runner design cannot flexibly adapt to different product requirements is solved.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a hot runner medical mold. Background Technology

[0002] In the field of mold manufacturing and injection molding, existing technologies have many shortcomings. Traditional molds have relatively simple hot runner designs and simple hot runner plate structures, usually with only a single manifold plate. This makes it impossible to flexibly adjust the manifold path according to different product requirements, resulting in uneven distribution of the plastic melt in the runner during injection molding, affecting the consistency of product quality. Moreover, existing molds have a limited number of cavities, generally fewer than others. For large-scale production, a large number of molds are needed to meet the production demand, which undoubtedly increases the mold cost significantly. At the same time, due to the limited number of cavities, the number of products produced in each injection molding is limited, resulting in low production efficiency. In addition, the existing mold assembly and connection are not reasonable enough, and the connection between the components is not stable enough. They are prone to displacement due to pressure changes during injection molding, affecting the molding accuracy of the product. Utility Model Content

[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0004] In view of the problems existing in the above and / or existing hot runner medical molds, this utility model is proposed.

[0005] Therefore, the problem to be solved by this utility model is how to solve the problem of uneven distribution of plastic melt in the flow channel, which affects the consistency of product quality. At the same time, the number of mold cavities is limited, and for large-scale production, a large number of molds are required to meet the production demand.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a hot runner medical mold, comprising,

[0007] The main structure includes a fixed mold plate; and,

[0008] A modular component, having a fixed mold fixing plate on one side, includes a hot runner plate, the hot runner plate being fixedly connected to one side of the fixed mold fixing plate, a fixed mold cavity plate being fixedly connected to one side of the hot runner plate, a movable mold cavity plate being fixedly connected to one side of the fixed mold cavity plate, a rear mold pad being fixedly connected to one side of the movable mold cavity plate, and a movable mold fixing plate being fixedly connected to one side of the rear mold pad.

[0009] As a preferred embodiment of the hot runner medical mold of this utility model, the hot runner plate includes a lower flow divider plate disposed at the bottom of the fixed mold plate, an upper flow divider plate disposed on one side of the lower flow divider plate, a first sprue sleeve disposed on one side of the upper flow divider plate, and one side of the first sprue sleeve penetrating the fixed mold plate and extending to one side of the fixed mold plate.

[0010] In a preferred embodiment of the hot runner medical mold of this utility model, the lower flow divider plate is composed of several flow divider substrates, which are evenly distributed on one side of the upper flow divider plate.

[0011] As a preferred embodiment of the hot runner medical mold of this utility model, a second gate sleeve is provided on one side of the flow divider plate, and the second gate sleeve cooperates with the upper flow divider plate.

[0012] In a preferred embodiment of the hot runner medical mold of this utility model, a front mold core is provided on one side of the fixed mold cavity plate, and a molding cavity is provided on the other side of the fixed mold cavity plate.

[0013] As a preferred embodiment of the hot runner medical mold of this utility model, the molding cavity is composed of multiple sets and is evenly distributed on the other side of the fixed mold cavity plate.

[0014] In a preferred embodiment of the hot runner medical mold of this utility model, the molding cavity is located at the bottom of the flow distribution plate and cooperates with the flow distribution plate.

[0015] In a preferred embodiment of the hot runner medical mold of this utility model, guide holes are provided around one side of the fixed mold cavity plate, and guide blocks are provided around one side of the moving mold cavity plate, with the guide holes cooperating with the guide blocks.

[0016] In a preferred embodiment of the hot runner medical mold of this utility model, a push ring is provided on one side of the moving model cavity plate, and one side of the push ring is connected to the front model core.

[0017] In a preferred embodiment of the hot runner medical mold of this utility model, the inner cavity of the push ring is provided with a rear mold core, and the rear mold core is in contact with the inner wall of the push ring.

[0018] The beneficial effects of this utility model are as follows: By adopting a hot runner plate composed of an upper flow divider plate and a lower flow divider plate containing several flow divider substrates, and in conjunction with a first gate sleeve and a second gate sleeve, the flow divider path can be flexibly adjusted according to different product requirements, so that the plastic melt is evenly distributed in the flow channel, which significantly improves the consistency of product quality and solves the problem that the traditional hot runner design cannot flexibly adapt to different product requirements, resulting in uneven melt distribution that affects product quality; by setting multiple sets of evenly distributed molding cavities on the fixed mold cavity plate, the mold is designed as a cavity, which greatly increases the number of cavities in the mold. In large-scale production, multiple products can be molded in one injection, which greatly improves production efficiency. At the same time, it reduces the number of molds required to meet production demand, effectively reducing mold costs and solving the problems of low number of cavities, low production efficiency, and high cost of traditional molds. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of 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. Among them:

[0020] Figure 1 This is a structural diagram of a hot runner medical mold.

[0021] Figure 2 This is a structural diagram of the front and rear core of a hot runner medical mold.

[0022] Figure 3 This is a structural diagram of the moving model cavity plate of a hot runner medical mold.

[0023] Figure 4 This is a structural diagram of the cavity plate for a hot runner medical mold.

[0024] Figure 5 This is a structural diagram of the hot runner plate for a hot runner medical mold.

[0025] Figure 6 This is an exploded view of the hot runner plate structure for a hot runner medical mold.

[0026] In the diagram: 100, main structure; 101, fixed mold fixing plate; 200, modular component; 201, hot runner plate; 202, fixed mold cavity plate; 203, moving mold cavity plate; 204, rear mold pad; 205, moving mold fixing plate; 201a, lower manifold plate; 201b, upper manifold plate; 201c, first sprue bushing; 201d, manifold base plate; 201e, second sprue bushing; 202a, front mold core; 202b, molding cavity; 202c, guide hole; 202d, guide block; 203a, push ring; 203b, rear mold core. Detailed Implementation

[0027] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0028] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0030] Reference Figures 1-6 This invention provides a hot runner medical mold, which includes a modular component 200.

[0031] The main structure 100 includes a fixed mold fixing plate 101; and,

[0032] The modular component 200 has a fixed mold fixing plate 101 on one side, including a hot runner plate 201. The hot runner plate 201 is fixedly connected to one side of the fixed mold fixing plate 101. A fixed mold cavity plate 202 is fixedly connected to one side of the hot runner plate 201. A movable mold cavity plate 203 is fixedly connected to one side of the fixed mold cavity plate 202. A rear mold pad plate 204 is fixedly connected to one side of the movable mold cavity plate 203. A movable mold fixing plate 205 is fixedly connected to one side of the rear mold pad plate 204.

[0033] The fixed mold plate 101 in the main structure 100 serves as the basic support component of the entire mold, providing a stable platform for the installation of subsequent components. Modular components 200 are connected in an orderly manner on one side of the fixed mold plate 101. The hot runner plate 201 is fixed to the fixed mold plate 101 and is responsible for the diversion and transportation of the plastic melt. It is a key component that ensures the uniform distribution of the plastic melt to each cavity during the injection molding process. The fixed mold cavity plate 202 and the moving mold cavity plate 203 cooperate with each other to form the mold cavity for product molding. The rear mold pad plate 204 and the moving mold plate 205 support and fix the moving mold cavity plate 203, ensuring the stability of the entire mold structure during the injection molding process. All components work closely together to form a complete and functionally defined mold system.

[0034] The hot runner plate 201 has the following advantages:

[0035] 1. Simple structure, easy assembly, and convenient maintenance;

[0036] 2. Disc spring design to prevent leakage;

[0037] 3. The nozzle combines multiple processes and materials, making it resistant to friction;

[0038] 4. Easy to maintain; thermocouples and heating coils can be replaced under high pressure.

[0039] 5. A single O-ring seal in the cooling backplate makes it easier to replace;

[0040] 6. The cylindrical valve needle head is guided and closes at 0°, pre-aligning the valve needle with the mold gate to minimize gate wear.

[0041] The fixed mold cavity plate 202 and the moving mold cavity plate 203 have self-developed hot runners and scientific analysis, which make the mold arrangement more compact and allow small machines to meet the operation of molds with higher cavities. At the same time, the parting surface allows for the disassembly and assembly of molding parts of various parts, making maintenance and operation simpler.

[0042] Specifically, the hot runner plate 201 includes a lower runner plate 201a disposed at the bottom of the fixed mold plate 101, an upper runner plate 201b disposed on one side of the lower runner plate 201a, a first sprue bushing 201c disposed on one side of the upper runner plate 201b, and one side of the first sprue bushing 201c penetrating the fixed mold plate 101 and extending to one side of the fixed mold plate 101.

[0043] The structure of the hot runner plate 201 is further refined. The lower flow divider plate 201a is located at the bottom of the fixed mold plate 101 and cooperates with the upper flow divider plate 201b to form a more complex and flexibly adjustable flow divider structure. The first gate sleeve 201c penetrates the fixed mold plate 101 and connects the nozzle of the injection molding machine to the hot runner system to ensure that the plastic melt can smoothly enter the hot runner plate 201. Through the cooperation of the upper and lower flow dividers, the initial control of the melt flow direction is achieved.

[0044] Specifically, the lower shunt plate 201a is composed of several shunt substrates 201d, which are evenly distributed on one side of the upper shunt plate 201b.

[0045] The lower flow divider 201a is composed of several flow divider substrates 201d and is evenly distributed on one side of the upper flow divider 201b. This design greatly increases the flexibility and controllability of flow divider. The flow divider substrates 201d of different numbers and layouts can accurately distribute the plastic melt to each molding cavity according to the shape, size and injection molding process requirements of the product, effectively solving the problem that the traditional single flow divider cannot flexibly adapt to different product needs.

[0046] Specifically, a second gate sleeve 201e is provided on one side of the flow divider substrate 201d, and the second gate sleeve 201e cooperates with the upper flow divider plate 201b.

[0047] The second gate sleeve 201e, located on one side of the flow divider substrate 201d, works in conjunction with the upper flow divider plate 201b to further improve the flow divider path. The second gate sleeve 201e can adjust the flow rate and speed of the melt entering the flow divider substrate 201d according to actual needs, so that the melt is distributed more evenly and stably during the flow divider process, ensuring that each molding cavity can obtain plastic melt of consistent quality, and improving the stability of product quality.

[0048] Specifically, a front model core 202a is provided on one side of the fixed model cavity plate 202, and a molding cavity 202b is provided on the other side of the fixed model cavity plate 202.

[0049] A front model core 202a is provided on one side of the fixed model cavity plate 202, and a forming cavity 202b is provided on the other side. The front model core 202a cooperates with relevant components in the moving model cavity plate 203 to shape the specific shape and structure of the product, while the forming cavity 202b is the direct space for product forming. The two work together to determine the final product's shape and dimensional accuracy.

[0050] Specifically, there are multiple sets of molding cavities 202b, which are evenly distributed on the other side of the fixed mold cavity plate 202.

[0051] Multiple sets of molding cavities 202b, evenly distributed on the other side of the fixed mold cavity plate 202, significantly increase the number of cavities in the mold. In large-scale production, multiple products can be molded in one injection, which greatly improves production efficiency, reduces the production cost of a single product, and effectively solves the problems of low number of cavities and low production efficiency in traditional molds.

[0052] Specifically, the molding cavity 202b is located at the bottom of the shunt substrate 201d and cooperates with the shunt substrate 201d.

[0053] The molding cavity 202b is located at the bottom of the flow distribution substrate 201d and cooperates with it, ensuring that the plastic melt can flow accurately into each molding cavity 202b. Through this close cooperation, the flow distribution system and the molding system are effectively connected, ensuring that the melt can enter the cavity in the best state during the injection molding process, thereby improving the quality and efficiency of product molding.

[0054] Specifically, guide holes 202c are provided around one side of the fixed model cavity plate 202, and guide blocks 202d are provided around one side of the moving model cavity plate 203. The guide holes 202c and guide blocks 202d cooperate with each other.

[0055] The mounting holes 202c on one side of the fixed mold cavity plate 202 and the fixing bolts 202d on one side of the moving mold cavity plate 203 cooperate with each other to achieve a stable connection between the two. This connection method can withstand greater pressure during injection molding and avoid displacement between the fixed mold cavity plate 202 and the moving mold cavity plate 203 due to pressure changes, thereby ensuring the molding accuracy of the product and solving the problem of unstable connection in traditional mold assembly.

[0056] Specifically, a push ring 203a is provided on one side of the moving model cavity plate 203, and one side of the push ring 203a is connected to the front model core 202a.

[0057] The push ring 203a on one side of the moving mold cavity plate 203 is connected to the front mold core 202a. After the product is formed, the push ring 203a can apply a pushing force to the product during the demolding process, and push the product out smoothly from the front mold core 202a, so as to realize the demolding operation of the product and ensure that the product can be taken out of the mold completely and smoothly.

[0058] Specifically, the inner cavity of the push ring 203a is provided with a rear model core 203b, which contacts the inner wall of the push ring 203a.

[0059] The rear mold core 203b, located inside the push ring 203a, contacts the inner wall of the push ring 203a. The rear mold core 203b, together with the front mold core 202a and the push ring 203a, works together to shape the internal structure of the product during the molding process. At the same time, supported by the rear mold core 203b, the push ring 203a can apply a more stable pushing force to the product during the demolding process, ensuring the smooth progress of the demolding process.

[0060] At the start of injection molding, the injection molding machine nozzle injects molten plastic into the hot runner plate 201 through the first sprue sleeve 201c. The upper manifold 201b and lower manifold 201a (composed of several manifold base plates 201d) in the hot runner plate 201 work together to divide the molten plastic according to product requirements. The molten plastic is evenly distributed to each manifold path through the second sprue sleeve 201e on one side of the manifold base plate 201d. The molding cavity 202b on the fixed mold cavity plate 202 is located at the bottom of the manifold base plate 201d, and the molten plastic flows into the molding cavity 202b from there. The front mold core 202a on one side of the fixed mold cavity plate 202 and the moving mold cavity plate 201a... The push ring 203a on one side and the rear mold core 203b inside the push ring 203a cooperate to shape the product and form the product cavity. After injection molding, the moving mold fixing plate 205 drives the moving mold cavity plate 203 to move, and the push ring 203a applies a pushing force to the product, pushing the product out of the front mold core 202a and completing the demolding process. Throughout the process, the fixed mold cavity plate 202 and the moving mold cavity plate 203 are tightly connected by the fixing bolt 202d. The rear mold pad plate 204 supports the moving mold cavity plate 203. The fixed mold fixing plate 101 provides a stable foundation for the entire mold. All components work together to complete the injection molding operation.

[0061] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A hot runner medical mold, characterized in that: include, The main structure (100) includes a fixed mold fixing plate (101); as well as, The modular component (200) has a fixed mold fixing plate (101) on one side, including a hot runner plate (201), the hot runner plate (201) being fixedly connected to one side of the fixed mold fixing plate (101), a fixed mold cavity plate (202) being fixedly connected to one side of the hot runner plate (201), a moving mold cavity plate (203) being fixedly connected to one side of the fixed mold cavity plate (202), a rear mold pad plate (204) being fixedly connected to one side of the moving mold cavity plate (203), and a moving mold fixing plate (205) being fixedly connected to one side of the rear mold pad plate (204).

2. The hot runner medical mold as described in claim 1, characterized in that: The hot runner plate (201) includes a lower runner plate (201a) disposed at the bottom of the fixed mold plate (101), an upper runner plate (201b) disposed on one side of the lower runner plate (201a), a first sprue bushing (201c) disposed on one side of the upper runner plate (201b), and one side of the first sprue bushing (201c) penetrating the fixed mold plate (101) and extending to one side of the fixed mold plate (101).

3. The hot runner medical mold as described in claim 2, characterized in that: The lower-level shunt plate (201a) is composed of several shunt substrates (201d), which are evenly distributed on one side of the upper-level shunt plate (201b).

4. The hot runner medical mold as described in claim 3, characterized in that: A second gate sleeve (201e) is provided on one side of the flow divider substrate (201d), and the second gate sleeve (201e) cooperates with the upper flow divider plate (201b).

5. The hot runner medical mold as described in claim 4, characterized in that: A front mold core (202a) is provided on one side of the fixed mold cavity plate (202), and a molding cavity (202b) is provided on the other side of the fixed mold cavity plate (202).

6. The hot runner medical mold as described in claim 5, characterized in that: The molding cavity (202b) has multiple sets and is evenly distributed on the other side of the fixed mold cavity plate (202).

7. The hot runner medical mold as described in claim 6, characterized in that: The molding cavity (202b) is located at the bottom of the shunt substrate (201d) and mates with the shunt substrate (201d).

8. The hot runner medical mold as described in claim 1, characterized in that: Guide holes (202c) are provided around one side of the fixed model cavity plate (202), and guide blocks (202d) are provided around one side of the moving model cavity plate (203). The guide holes (202c) cooperate with the guide blocks (202d).

9. The hot runner medical mold as described in claim 8, characterized in that: A push ring (203a) is provided on one side of the moving model cavity plate (203), and one side of the push ring (203a) is connected to the front model core (202a).

10. The hot runner medical mold as described in claim 9, characterized in that: The inner cavity of the push ring (203a) is provided with a rear model core (203b), which is in contact with the inner wall of the push ring (203a).

Images