A molding die with an improved glue feeding structure

Abstract

The utility model relates to the technical field of forming die, disclose a kind of forming die of improved glue feeding structure, including lower mould, upper mould, the top of lower mould is fixedly connected with positioning guide rod, the outside of positioning guide rod is movably connected with upper mould, the top of lower mould is fixedly connected with forming module, the bottom of upper mould is equipped with forming die cavity, the bottom of lower mould is fixedly connected with mounting bracket, and top lifting assembly is arranged between the mounting bracket and lower mould. In the utility model, through the cooperation of lower mould and upper mould, positioning guide rod is accurately guided, forming module and forming die cavity form forming space, by glue feeding structure containing cross type glue groove, glue inlet, arc glue feeding channel, glue is evenly distributed, stably conveyed, realize mould accurate butt joint, glue low resistance flow, once forming multiple products, ensure product quality consistency, improve production efficiency and operational convenience.

Description

Technical Field

[0001] This utility model relates to the field of molding die technology, and in particular to a molding die with an improved injection structure. Background Technology

[0002] In the field of injection molding, molding dies are the core equipment for realizing mass production of products, and their structural design directly determines the product molding quality and production efficiency.

[0003] A molding die, or simply a die, is a core tooling device used in industrial production to process raw materials such as metals, plastics, rubber, and ceramics into finished or semi-finished products with specific shapes, sizes, and precision through specific processes. It uses its own pre-set cavity, structure, or working principle to cause raw materials in a plastic state, such as molten, softened, or liquid state, to undergo physical or chemical changes and be shaped under the action of pressure, temperature, time, and other conditions, ultimately obtaining a product that meets the design requirements.

[0004] While existing molding dies can achieve product molding, traditional mold injection structures have significant shortcomings. Most injection structures employ a single linear channel or asymmetrical glue channel design, making it difficult to evenly distribute the glue into each molding cavity after it enters from the injection port. Furthermore, the flow resistance is high, easily causing impacts and leading to insufficient or excessive filling of some cavities, further exacerbating product quality variations. Additionally, traditional injection ports are often located on the side or bottom of the mold, making it inconvenient to connect with external glue supply equipment and difficult to observe the injection status, causing inconvenience for operation and maintenance. Moreover, while traditional molds can achieve basic molding functions, they have poor adaptability to mass production, mostly only capable of molding a single product at a time, resulting in low production efficiency and failing to meet the market's demand for rapid supply of batch products. Some molds also lack effective glue residue cleaning designs; if residual glue in the glue channel is not cleaned in time after molding, it will affect the quality of subsequent moldings, increasing mold maintenance costs and operational complexity. Therefore, a molding die with an improved injection structure is proposed to solve these problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a molding die with an improved glue inlet structure, aiming to solve the problems in the existing technology. These problems include uneven glue distribution, high flow resistance leading to impact and resulting in large product quality differences; inconvenient glue inlet location for connecting to glue supply equipment and observing glue inlet status; poor adaptability to mass production; low production efficiency; and lack of effective glue residue cleaning design affecting subsequent molding quality and increasing maintenance costs and operational complexity.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a molding die with an improved glue injection structure, comprising a lower die and an upper die, wherein a positioning guide rod is fixedly connected to the top of the lower die, the upper die is movably connected to the outer side of the positioning guide rod, a molding module is fixedly connected to the top of the lower die, a molding cavity is provided at the bottom of the upper die, a mounting frame is fixedly connected to the bottom of the lower die, a lifting component is provided between the mounting frame and the lower die, and a glue injection structure is provided between the lower die and the upper die;

[0007] The glue inlet structure includes a cross-shaped glue groove and a glue inlet. The cross-shaped glue groove is opened between the mating surfaces of the lower mold and the upper mold. The glue inlet is opened on the upper surface of the upper mold. An arc-shaped glue supply channel is opened between the bottom of the inner wall of the cross-shaped glue groove and the upper surface of the lower mold.

[0008] As a further description of the above technical solution:

[0009] The bottom end of the glue inlet is connected to the upper surface of the inner wall of the cross-shaped glue groove.

[0010] As a further description of the above technical solution:

[0011] There are four arc-shaped glue dispensing channels and four molding cavities, and the four arc-shaped glue dispensing channels and molding cavities are set one-to-one.

[0012] As a further description of the above technical solution:

[0013] One end of the arc-shaped glue dispensing channel is connected to the lower surface of the inner wall of the cross-shaped glue groove, and the other end of the arc-shaped glue dispensing channel is connected to the inside of the molding cavity.

[0014] As a further description of the above technical solution:

[0015] The lifting assembly includes a first through groove, a second through groove, a limiting rod, and a limiting slot. The first through groove, the second through groove, and the limiting slot are all formed on the lower surface of the lower mold. The top end of the limiting rod is fixedly connected to the bottom of the lower mold.

[0016] As a further description of the above technical solution:

[0017] The top ends of the first and second through grooves are both connected to the inner wall of the cross-shaped adhesive groove.

[0018] As a further description of the above technical solution:

[0019] A lifting seat is movably connected to the outer side of the limiting rod. A first electric lifting rod is fixedly connected between the lower surface of the lifting seat and the inner surface of the mounting frame. A first lifting push rod and a second lifting push rod are fixedly connected to the top of the lifting seat.

[0020] As a further description of the above technical solution:

[0021] The outer wall of the first lifting push rod is attached to the inner wall of the first through groove, and the outer wall of the second lifting push rod is attached to the inner wall of the second through groove.

[0022] As a further description of the above technical solution:

[0023] The inner side of the limiting slot is movably connected to a lifting ring frame, and the top of the lifting ring frame is fixedly connected to a demolding ejector rod, the top of which penetrates the upper surface of the molding module.

[0024] As a further description of the above technical solution:

[0025] The top of the demolding ejector is horizontally positioned with respect to the surface of the molding module. A second electric lifting rod is fixedly connected between the lower surface of the lifting ring frame and the inner surface of the mounting frame. Multiple second electric lifting rods are arranged in a ring at equal intervals.

[0026] This utility model has the following beneficial effects:

[0027] 1. In this utility model, the lower mold and upper mold cooperate, the positioning guide rod provides precise guidance, the molding module and the molding cavity form a molding space, and the glue inlet structure includes a cross-shaped glue groove, a glue inlet, and an arc-shaped glue supply channel, so that the glue is evenly distributed and steadily conveyed, achieving precise mold docking, low-resistance glue flow, one-time molding of multiple products, ensuring consistent product quality, and improving production efficiency and ease of operation.

[0028] 2. In this utility model, the lifting assembly utilizes the first and second through slots. The first electric lifting rod drives the lifting seat, which in turn drives the first and second lifting push rods to clean the residual adhesive material in the cross-shaped adhesive groove. The second electric lifting rod drives the lifting ring frame, which in turn drives the demolding push rod to demold smoothly. Overall, this ensures mold stability, clean adhesive groove, and intact product, thereby improving production efficiency and molding quality. Attached Figure Description

[0029] Figure 1 This is a three-dimensional schematic diagram of a molding die with an improved glue injection structure proposed in this utility model.

[0030] Figure 2 This is a schematic diagram of the overall cross-sectional structure of a molding die with an improved glue injection structure proposed in this utility model;

[0031] Figure 3 This is a schematic diagram of the mold opening structure at the lower and upper molds of a molding die with an improved glue injection structure proposed in this utility model.

[0032] Figure 4This is a schematic diagram of the lifting assembly adjustment structure at the lower mold of a molding die with an improved glue injection structure proposed in this utility model.

[0033] Legend:

[0034] 1. Lower mold; 2. Upper mold; 3. Positioning guide rod; 4. Glue inlet structure; 41. Cross-shaped glue groove; 42. Glue inlet; 43. Arc-shaped glue channel; 5. Mounting bracket; 6. Lifting assembly; 61. First through groove; 62. Second through groove; 63. Limiting rod; 64. Lifting seat; 65. First electric lifting rod; 66. First lifting push rod; 67. Second lifting push rod; 68. Limiting slot; 69. Lifting ring frame; 610. Demolding ejector rod; 611. Second electric lifting rod; 7. Molding cavity; 8. Molding module. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] Reference Figures 1-3This utility model provides an embodiment of a molding die with an improved injection structure, comprising a lower die 1 and an upper die 2. The lower die 1 serves as the basic load-bearing component of the die, supporting and mounting key structures such as the molding module 8. The upper die 2 works in conjunction with the lower die 1 to form the closed space required for product molding. A positioning guide rod 3 is fixedly connected to the top of the lower die 1, providing precise positioning and guidance to ensure accurate alignment between the upper die 2 and the lower die 1 during vertical movement, preventing misalignment that could affect product molding accuracy. The upper die 2 is movably connected to the outer side of the positioning guide rod 3, allowing it to move smoothly along the axis of the positioning guide rod 3, facilitating the opening and closing of the die for product placement and removal. A molding module 8 is fixedly connected to the top of mold 1. The shape of the molding module 8 matches a part of the product structure and is one of the key structures for product molding, providing a specific molding profile for the product. A molding cavity 7 is provided at the bottom of the upper mold 2. The molding cavity 7 and the molding module 8 cooperate with each other to form a complete product molding space. After the molten rubber is injected, it cools and solidifies into the desired product in this space. A glue inlet structure 4 is provided between the lower mold 1 and the upper mold 2. The glue inlet structure 4 is the channel for the molten rubber to enter the molding cavity 7. Its structural design directly affects the flow rate of the rubber, the filling effect, and the quality of the final product. The glue inlet structure 4 includes a cross-shaped glue groove 41 and a glue inlet 42. The cross-shaped glue groove 41 can evenly distribute the rubber entering from the glue inlet 42. In all directions, the inlet 42 serves as the entrance for the adhesive to enter the mold, connecting to external adhesive supply equipment. A cross-shaped groove 41 is located between the mating surfaces of the lower mold 1 and the upper mold 2. This location between the mating surfaces prevents leakage of the adhesive as it flows within the groove, while ensuring smooth delivery of the adhesive from the mating point of the lower mold 1 and the upper mold 2 to the molding cavity 7. The inlet 42 is located on the upper surface of the upper mold 2. This placement facilitates connection to external adhesive supply pipes and allows for easy observation and operation of the adhesive delivery process by staff. The bottom end of the inlet 42 is continuously connected to the upper surface of the inner wall of the cross-shaped groove 41. This continuous connection allows the adhesive flowing from the inlet 42 to directly enter the cross-shaped groove 41. To reduce resistance and loss during the flow of the adhesive material, an arc-shaped adhesive channel 43 is provided between the bottom of the inner wall of the cross-shaped adhesive groove 41 and the upper surface of the lower mold 1. The arc-shaped adhesive channel 43 adopts an arc design, which can effectively reduce the impact and resistance of the adhesive material during the flow process, allowing the adhesive material to be delivered to the molding cavity 7 more smoothly. There are four arc-shaped adhesive channels 43 and four molding cavities 7. Setting four arc-shaped adhesive channels 43 and four molding cavities 7 can realize the molding of multiple products at one time, improve production efficiency, and meet the needs of mass production. The four arc-shaped adhesive channels 43 and four molding cavities 7 are set one-to-one, which ensures that each molding cavity 7 can obtain sufficient and uniform adhesive material through the independent arc-shaped adhesive channel 43, ensuring that the molding quality of each product is consistent.One end of the arc-shaped dispensing channel 43 is connected to the lower inner wall of the cross-shaped glue groove 41. This connection allows the glue material in the cross-shaped glue groove 41 to smoothly enter the arc-shaped dispensing channel 43, achieving orderly delivery of the glue material. The other end of the arc-shaped dispensing channel 43 is connected to the inside of the molding cavity 7. Through this connection, the glue material in the arc-shaped dispensing channel 43 can be directly injected into the molding cavity 7, completing the product filling and molding process.

[0037] Reference Figure 1 , Figure 2 and Figure 4The bottom of the lower mold 1 is fixedly connected to a mounting frame 5. The mounting frame 5 provides stable support and a mounting foundation for the entire mold, allowing the mold to be fixed in a designated position on the production equipment, ensuring the stability of the mold during operation. A lifting assembly 6 is provided between the mounting frame 5 and the lower mold 1. The lifting assembly 6 is mainly used to eject the product from the mold after it has been formed, making it easier for workers to remove the product and improving production efficiency. The lifting assembly 6 includes a first through groove 61, a second through groove 62, a limiting rod 63, and a limiting slot 68. The first through groove 61 and the second through groove 62 provide moving channels for the first lifting push rod 66 and the second lifting push rod 67. The limiting rod 63 is used to limit the moving direction of the lifting seat 64 to ensure its stable lifting. The limiting slot 68 is used to lift the lifting ring frame 69. For limiting and guiding purposes, the first through groove 61, the second through groove 62, and the limiting slot 68 are all formed on the lower surface of the lower mold 1. This placement on the lower surface of the lower mold 1 allows for a reasonable arrangement of the components of the lifting assembly 6 between the mounting bracket 5 and the lower mold 1, without affecting the molding structure of the upper surface of the mold. It also facilitates the installation and maintenance of the lifting assembly 6. The tops of the first through groove 61 and the second through groove 62 are connected to the inner wall of the cross-shaped glue groove 41. This through-hole design allows the first lifting push rod 66 and the second lifting push rod 67 to extend into the cross-shaped glue groove 41 through the first through groove 61 and the second through groove 62. After molding, any residual glue material in the cross-shaped glue groove 41 can be ejected, preventing residual glue material from affecting the quality of the next molding. The top of the limiting rod 63 is fixedly connected to... At the bottom of the lower mold 1, the top end of the limiting rod 63 is fixed to the bottom of the lower mold 1 to ensure the stability of the limiting rod 63 and provide reliable guidance and limitation for the lifting seat 64. The lifting seat 64 is movably connected to the outer side of the limiting rod 63. The lifting seat 64 can move up and down along the outer side of the limiting rod 63. Its movement drives the first lifting push rod 66 and the second lifting push rod 67 to rise and fall synchronously, realizing the ejection action. The lower surface of the lifting seat 64 is fixedly connected to the inner surface of the mounting frame 5. The first electric lifting rod 65 provides the power source for the lifting of the lifting seat 64. Through electric control, the precise lifting of the lifting seat 64 can be realized, thereby controlling the ejection force and height of the first lifting push rod 66 and the second lifting push rod 67. The unit is fixedly connected to a first lifting push rod 66 and a second lifting push rod 67. The first and second lifting push rods 66 and 67 move up and down under the drive of the lifting seat 64, mainly used to eject residual adhesive in the cross-shaped adhesive groove 41, ensuring the groove is clean. The outer wall of the first lifting push rod 66 is fitted to the inner wall of the first through groove 61. This fitted connection prevents adhesive from leaking from the gap between the first through groove 61 and the first lifting push rod 66, while also ensuring stable movement of the first lifting push rod 66 within the first through groove 61, preventing wobbling. The outer wall of the second lifting push rod 67 is fitted to the inner wall of the second through groove 62, similarly to the first lifting push rod 66. This fitted connection prevents adhesive leakage and ensures the stability of the second lifting push rod 67's movement.To ensure effective ejection of residual adhesive, a lifting ring 69 is movably connected to the inner side of the limiting slot 68. The lifting ring 69 can move up and down inside the limiting slot 68, restricting its movement direction to prevent deviation during lifting. A demolding ejector rod 610 is fixedly connected to the top of the lifting ring 69. Driven by the lifting ring 69, the demolding ejector rod 610 moves upward, ejecting the molded product from between the molding cavity 7 and the molding module 8, thus achieving demolding. The top of the demolding ejector rod 610 penetrates the upper surface of the molding module 8, allowing it to directly act on the bottom of the product during ejection, ensuring smooth product detachment from the molding module 8. The top of the demolding ejector rod 610 is horizontally aligned with the surface of the molding module 8. The horizontal setting ensures that the top of the demolding ejector 610 does not protrude from the surface of the molding module 8 during product molding, thus not affecting the product's shape and surface quality. A second electric lifting rod 611 is fixedly connected between the lower surface of the lifting ring frame 69 and the inner surface of the mounting frame 5. The second electric lifting rod 611 provides power for the lifting of the lifting ring frame 69. Electric control enables precise lifting of the lifting ring frame 69, thereby controlling the ejection action of the demolding ejector 610 and ensuring smooth product demolding. Multiple second electric lifting rods 611 are evenly spaced in a ring. This evenly spaced ring distribution ensures uniform force on the lifting ring frame 69 during lifting, preventing tilting due to uneven force and ensuring uniform ejection force applied by the demolding ejector 610, thus preventing product damage during demolding.

[0038] Working principle: When using the improved injection molding die, the upper die 2 is first guided by the positioning guide rod 3 to move downward along the positioning guide rod 3 until it is precisely fitted with the lower die 1. At this time, the molding module 8 at the top of the lower die 1 and the molding cavity 7 at the bottom of the upper die 2 together form a closed product molding space.

[0039] Next, the external glue supply equipment injects molten glue through the glue inlet 42 on the upper surface of the upper mold 2. The glue flows directly into the cross-shaped glue groove 41 between the mating surfaces of the lower mold 1 and the upper mold 2 through the bottom end of the glue inlet 42. The cross-shaped glue groove 41 evenly distributes the glue to four directions. The glue then passes through the arc-shaped glue supply channel 43 that runs through the lower surface of the inner wall of the cross-shaped glue groove 41. The four arc-shaped glue supply channels 43 correspond one-to-one with the four molding cavities 7 and are smoothly transported into the molding cavity 7. After the glue cools and solidifies in the molding cavity 7, the upper mold 2 is controlled to move upward along the positioning guide rod 3 to open the mold.

[0040] Then, the lifting assembly 6 is activated. On one hand, the first electric lifting rod 65 between the mounting frame 5 and the lower mold 1 drives the lifting seat 64 to move upward along the limiting rod 63, which in turn drives the first lifting push rod 66 at the top of the lifting seat 64 to extend upward along the first through groove 61 and the second lifting push rod 67 along the second through groove 62 into the cross-shaped glue groove 41, thus removing and cleaning the residual glue material in the groove. On the other hand, multiple second electric lifting rods 611 distributed at equal intervals in a ring drive the lifting ring frame 69 to move upward along the limiting slot 68, which in turn drives the top of the demolding push rod 610 at the top of the lifting ring frame 69 to penetrate through the molding module 8 and initially push upward horizontally with the surface of the molding module 8, thus ejecting the molded product from between the molding cavity 7 and the molding module 8, completing the product demolding.

[0041] Finally, the first electric lifting rod 65 and the second electric lifting rod 611 respectively drive each lifting component to reset, waiting for the next molding operation.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A molding die with an improved injection structure, comprising a lower die (1) and an upper die (2), characterized in that: The top of the lower mold (1) is fixedly connected to a positioning guide rod (3), the outer side of the positioning guide rod (3) is movably connected to an upper mold (2), the top of the lower mold (1) is fixedly connected to a molding module (8), the bottom of the upper mold (2) is provided with a molding cavity (7), the bottom end of the lower mold (1) is fixedly connected to a mounting bracket (5), a lifting component (6) is provided between the mounting bracket (5) and the lower mold (1), and a glue injection structure (4) is provided between the lower mold (1) and the upper mold (2). The glue inlet structure (4) includes a cross-shaped glue groove (41) and a glue inlet (42). The cross-shaped glue groove (41) is opened between the mating surfaces of the lower mold (1) and the upper mold (2). The glue inlet (42) is opened on the upper surface of the upper mold (2). An arc-shaped glue inlet channel (43) is opened between the bottom of the inner wall of the cross-shaped glue groove (41) and the upper surface of the lower mold (1).

2. The molding die with an improved injection structure according to claim 1, characterized in that: The bottom end of the glue inlet (42) is connected to the upper surface of the inner wall of the cross-shaped glue groove (41).

3. The molding die with an improved injection structure according to claim 1, characterized in that: The arc-shaped glue dispensing channel (43) and the molding cavity (7) are each provided in four parts, and the four arc-shaped glue dispensing channels (43) and the molding cavity (7) are provided in a one-to-one correspondence.

4. The molding die with an improved injection structure according to claim 3, characterized in that: One end of the arc-shaped glue channel (43) is connected to the lower surface of the inner wall of the cross-shaped glue groove (41), and the other end of the arc-shaped glue channel (43) is connected to the interior of the molding cavity (7).

5. The molding die with an improved injection structure according to claim 1, characterized in that: The lifting assembly (6) includes a first through groove (61), a second through groove (62), a limiting rod (63), and a limiting slot (68). The first through groove (61), the second through groove (62), and the limiting slot (68) are all opened on the lower surface of the lower mold (1). The top end of the limiting rod (63) is fixedly connected to the bottom of the lower mold (1).

6. The molding die with an improved injection structure according to claim 5, characterized in that: The top ends of the first through groove (61) and the second through groove (62) are both connected to the inner wall of the cross-shaped glue groove (41).

7. A molding die with an improved injection structure according to claim 6, characterized in that: The outer side of the limiting rod (63) is movably connected to the lifting seat (64), and the lower surface of the lifting seat (64) is fixedly connected to the inner surface of the mounting frame (5). The top of the lifting seat (64) is fixedly connected to the first lifting push rod (66) and the second lifting push rod (67).

8. A molding die with an improved injection structure according to claim 7, characterized in that: The outer wall of the first lifting push rod (66) is attached to the inner wall of the first through groove (61), and the outer wall of the second lifting push rod (67) is attached to the inner wall of the second through groove (62).

9. A molding die with an improved injection structure according to claim 5, characterized in that: The inner side of the limiting slot (68) is movably connected to a lifting ring frame (69), and the top of the lifting ring frame (69) is fixedly connected to a demolding ejector rod (610), the top end of which penetrates the upper surface of the molding module (8).

10. A molding die with an improved injection structure according to claim 9, characterized in that: The top of the demolding ejector rod (610) is horizontally positioned with respect to the surface of the molding module (8). A second electric lifting rod (611) is fixedly connected between the lower surface of the lifting ring frame (69) and the inner surface of the mounting frame (5). Multiple second electric lifting rods (611) are arranged in a ring at equal intervals.

Images