Injection mold with exhaust structure for dumbbell processing and production

Abstract

The utility model provides an injection mold with an exhaust structure for dumbbell processing and production, which relates to the technical field of injection molds and comprises a lower mold mechanism, the lower mold mechanism comprises a lower mold body, an extrusion groove is formed in the outer wall of the upper end of the lower mold body, and a lower mold injection groove is formed in one side of the inner wall of the lower mold body; a first exhaust groove is formed in one side of the inner wall of the lower die body, a fixing block is fixedly connected to one side of the inner wall of the first exhaust groove, a sealing block is fixedly connected to the other side of the fixing block, a vacuum groove is formed in one side of the inner wall of the lower die body, a second exhaust groove is formed in the inner wall of one side of the lower die body, and a filter screen is fixedly connected to one side of the inner wall of the second exhaust groove. The connecting grooves are formed in the outer wall of the upper end of the lower mold body. The injection mold solves the problem that the quality of injection products is poor due to the fact that gas in a mold cavity of an existing injection mold is exhausted through simple exhaust holes or exhaust grooves and cannot be exhausted efficiently in the mode.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to an injection mold with a venting structure for dumbbell manufacturing. Background Technology

[0002] With the rapid development of the fitness industry, dumbbells, as an important piece of fitness equipment, are widely used in homes, gyms, and other training facilities. The demand for dumbbells is constantly increasing, and injection molding technology, due to its high efficiency, low cost, and good molding precision, has become one of the main processes in dumbbell manufacturing. In the traditional dumbbell injection molding process, the design of the mold structure has a crucial impact on product quality, especially the mold's venting performance, which directly affects the injection molding effect. However, existing injection molds used in dumbbell manufacturing still have some significant shortcomings in their application.

[0003] Traditional injection molds typically use simple vents or venting channels to expel gases from the mold cavity. However, due to poor design, gas cannot be expelled efficiently, easily forming air bubbles or voids within the mold cavity. This leads to quality problems in the injection molded product, such as surface defects and insufficient internal structural strength. Furthermore, the lack of protective measures for the mold venting channels allows external impurities to enter the mold cavity, contaminating the internal environment and further affecting injection molding quality. Simultaneously, because the mold venting system is not tightly integrated with the injection molding process, backflow of gas may occur during expulsion, affecting venting efficiency and even causing uneven pressure within the mold cavity, ultimately impacting the filling effect of the injection molded material. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an injection mold with a venting structure for dumbbell manufacturing.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an injection mold for dumbbell processing and production with an exhaust structure, comprising: a lower mold mechanism, a dumbbell body connected to the upper inner wall of the lower mold mechanism, a hydraulic rod fixedly connected to the upper outer wall of the lower mold mechanism, a movable plate connected to the lower end of the hydraulic rod, a connecting groove provided on the upper outer wall of the lower mold mechanism, and an upper mold mechanism movably connected to the upper end of the lower mold mechanism;

[0006] The lower mold mechanism includes a lower mold body, an extrusion groove on the upper outer wall of the lower mold body, a lower mold injection groove on one side of the inner wall of the lower mold body, a first venting groove on one side of the inner wall of the lower mold body, a fixing block fixedly connected to one side of the inner wall of the first venting groove, a sealing block fixedly connected to the other side of the fixing block, a vacuum groove on one side of the inner wall of the lower mold body, a second venting groove on one side of the inner wall of the lower mold body, a filter screen fixedly connected to one side of the inner wall of the second venting groove, and a connecting groove on the upper outer wall of the lower mold body.

[0007] In a preferred embodiment, the upper mold mechanism includes an upper mold body, an inlet fixedly connected to the upper outer wall of the upper mold body, an upper mold injection groove opened on one side of the inner wall of the upper mold body, and an electric telescopic rod fixedly connected to the lower end of one side of the outer wall of the upper mold body.

[0008] In a preferred embodiment, the electric telescopic rod provided at the lower end of the outer wall of the upper mold body is connected to the connecting groove opened at the upper end of the outer wall of the lower mold body.

[0009] In a preferred embodiment, the lower end of the upper mold body is movably connected to the inner wall of the extrusion groove opened at the upper end of the lower mold body.

[0010] In a preferred embodiment, both the lower mold injection groove and the first venting groove are located on one side of the inner wall of the lower mold body, and the first venting groove is connected to the lower mold injection groove.

[0011] In a preferred embodiment, the movable plate at the lower end of the hydraulic rod is movably connected to the inner wall of the vacuum groove opened on one side of the inner wall of the lower mold body.

[0012] In a preferred embodiment, the two sides of the vacuum groove are respectively connected to the first exhaust groove and the second exhaust groove.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] 1. In use, this utility model achieves precise gas discharge by setting a first exhaust groove, a vacuum groove, and a second exhaust groove, and connecting a sealing block inside the first exhaust groove. The hydraulic rod drives the moving plate up and down, and the soft nature of the sealing block prevents backflow of gas, effectively removing gas from the lower mold injection groove and improving injection quality. The second exhaust groove has a built-in filter screen, effectively preventing external impurities from entering the mold and ensuring a clean internal environment.

[0015] 2. In use, the upper and lower mold injection grooves of this invention are structurally compatible, allowing liquid injection material to be directly introduced into the mold cavity through the inlet, ensuring uniform filling. The cooled dumbbell body can be directly molded, reducing subsequent processing steps and improving production efficiency. Attached Figure Description

[0016] Figure 1 This utility model provides a schematic diagram of the external structure of an injection mold for dumbbell manufacturing with an exhaust structure.

[0017] Figure 2 This utility model provides a disassembly diagram of an injection mold with an exhaust structure for dumbbell manufacturing.

[0018] Figure 3 This utility model provides a cross-sectional disassembly diagram of the lower mold mechanism of an injection mold with an exhaust structure for dumbbell manufacturing.

[0019] Figure 4 This utility model provides a cross-sectional disassembly diagram of the lower mold mechanism of an injection mold with an exhaust structure for dumbbell manufacturing.

[0020] Figure 5 This utility model provides a cross-sectional disassembly diagram of the upper mold mechanism of an injection mold with an exhaust structure for dumbbell manufacturing.

[0021] Legend:

[0022] 1. Lower mold mechanism; 2. Dumbbell body; 3. Hydraulic rod; 4. Moving plate; 5. Upper mold mechanism; 6. Connecting groove;

[0023] 11. Lower mold body; 12. Extrusion groove; 13. Lower mold injection groove; 14. First venting groove; 15. Fixing block; 16. Sealing block; 17. Vacuum groove; 18. Second venting groove; 19. Filter screen;

[0024] 51. Upper mold body; 52. Feed port; 53. Upper mold injection groove; 54. Electric telescopic rod. Detailed Implementation

[0025] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings and examples.

[0026] It should be noted that 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. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0027] Furthermore, it should be understood in the description of this utility model that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral unit; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. However, specifying a direct connection indicates that the two main bodies at the connection point are not connected through a transitional structure, but are simply connected to form a whole through a connecting structure. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0029] In this utility model, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0030] Example 1

[0031] like Figure 1-4 As shown, this utility model provides a technical solution: an injection mold for dumbbell processing and production with an exhaust structure, comprising: a lower mold mechanism 1, a dumbbell body 2 connected to the upper inner wall of the lower mold mechanism 1, a hydraulic rod 3 fixedly connected to the upper outer wall of the lower mold mechanism 1, a movable plate 4 connected to the lower end of the hydraulic rod 3, a connecting groove 6 opened on the upper outer wall of the lower mold mechanism 1, and an upper mold mechanism 5 movably connected to the upper end of the lower mold mechanism 1;

[0032] The lower mold mechanism 1 includes a lower mold body 11. An extrusion groove 12 is formed on the outer wall of the upper end of the lower mold body 11. A lower mold injection groove 13 is formed on one side of the inner wall of the lower mold body 11. A first venting groove 14 is formed on one side of the inner wall of the lower mold body 11. Both the lower mold injection groove 13 and the first venting groove 14 are located on one side of the inner wall of the lower mold body 11, and one side of the first venting groove 14 is correspondingly connected to one side of the lower mold injection groove 13. A fixing block 15 is fixedly connected to one side of the inner wall of the first venting groove 14. 5. A sealing block 16 is fixedly connected to the other side. A vacuum groove 17 is opened on one side of the inner wall of the lower mold body 11. The movable plate 4 at the lower end of the hydraulic rod 3 is movably connected to the inner wall of the vacuum groove 17 opened on one side of the inner wall of the lower mold body 11. A second exhaust groove 18 is opened on one side of the inner wall of the lower mold body 11. The two sides of the vacuum groove 17 are respectively connected to the first exhaust groove 14 and the second exhaust groove 18. A filter screen 19 is fixedly connected to one side of the inner wall of the second exhaust groove 18. A connecting groove 6 is opened on the upper outer wall of the lower mold body 11.

[0033] In this embodiment, a lower mold mechanism 1 is designed, which includes a lower mold body 11. An extrusion groove 12 is formed on the upper outer wall of the lower mold body 11, and a lower mold injection groove 13 is formed at the bottom of the extrusion groove 12 and on one side of the inner wall of the lower mold body 11. A first venting groove 14 is formed on one side of the lower mold injection groove 13 and on one side of the inner wall of the lower mold body 11. A sealing block 16 is fixedly connected to one side of the inner wall of the first venting groove 14 by a fixing block 15. A vacuum groove 17 is formed on the other side of the first venting groove 14 and on one side of the inner wall of the lower mold body 11. A second venting groove 18 is formed on one side of the vacuum groove 17 and on one side of the inner wall of the lower mold body 11. A filter screen 19 is fixedly connected to the inner wall of the second venting groove 18. The first venting groove 14 and the second venting groove 18 are correspondingly connected and respectively located on both sides of the vacuum groove 17. A movable plate 4 is movably connected to one side of the inner wall of the vacuum groove 17. A hydraulic rod 3 is fixedly connected to the upper end of the movable plate 4. Located on one side of the upper outer wall of the lower mold body 11, the lower end of the hydraulic rod 3 extends to one side of the inner wall of the lower mold body 11 and is fixedly connected to the moving plate 4. Therefore, when the hydraulic rod 3 is activated, the hydraulic rod 3 can drive the moving plate 4 to move up and down on the inner wall of the vacuum tank 17. The sealing block 16 is made of soft material. When venting is required, the moving plate 4 can be driven to move upward through the hydraulic rod 3. At this time, the gas in the lower mold injection tank 13 will be transported to the vacuum tank 17 through the first venting groove 14 and the bending of the sealing block 16. At this time, the moving plate 4 is pushed downward. At this time, the sealing block 16 will return to its original shape and be limited by the first venting groove 14, so that the first venting groove 14 is sealed. Therefore, when the moving plate 4 squeezes the gas in the vacuum tank 17, the gas will be transported to the outside through the second venting groove 18, thereby venting the gas in the lower mold injection tank 13. A filter screen 19 is provided on one side of the inner wall of the second venting groove 18. The filter screen 19 can prevent external impurities from entering the lower mold body 11.

[0034] Example 2

[0035] like Figure 1-2 and Figure 5 As shown, the upper mold mechanism 5 includes an upper mold body 51. The lower end of the upper mold body 51 is movably connected to the inner wall of the extrusion groove 12 opened at the upper end of the lower mold body 11. The upper outer wall of the upper mold body 51 is fixedly connected to the feed port 52. An upper mold injection groove 53 is opened on one side of the inner wall of the upper mold body 51. An electric telescopic rod 54 is fixedly connected to the lower end of one side of the outer wall of the upper mold body 51. The electric telescopic rod 54 at the lower end of the outer wall of the upper mold body 51 is correspondingly connected to the connecting groove 6 opened at the upper outer wall of the lower mold body 11.

[0036] In this embodiment, an electric telescopic rod 54 is connected to the inner wall of the connecting groove 6 opened at the upper end of the lower mold body 11, thereby enabling the upper mold body 51 and the lower mold body 11 to be movably connected. The upper end of the upper mold body 51 is fixedly connected to the inlet 52, and an upper mold injection groove 53 is opened on one side of the inner wall of the upper mold body 51. The upper mold body 51 can move up and down at the upper end of the lower mold body 11 via the electric telescopic rod 54. When injection molding is required, the lower end of the upper mold body 51 can be engaged with the extrusion groove 12 opened at the upper end of the lower mold body 11. At this time, the inlet 52 is correspondingly connected to the lower mold injection groove 13, and the liquid to be injected is added through the inlet 52 and flows into the upper mold injection groove 53 and the lower mold injection groove 13. After cooling, a dumbbell body 2 will be formed, thereby completing the injection molding operation of the dumbbell body 2.

[0037] Working principle:

[0038] like Figure 1-5 As shown, this device achieves the processing and molding of injection molding materials through the coordinated action of the upper and lower molds. The lower mold mechanism 1 consists of a lower mold body 11, which has an injection groove inside. Gas generated during injection is discharged through the first exhaust groove 14, which is connected to the vacuum groove 17 through a sealing component to ensure that the gas is concentrated and extracted. The moving plate 4 in the vacuum groove 17 is driven by the hydraulic rod 3 to reciprocate, driving the gas from the injection groove through the first exhaust groove 14 into the vacuum groove 17, and then squeezed by the moving plate 4 through the second exhaust groove 18 to the outside. At the same time, the filter screen 19 can prevent the backflow of external impurities. The upper mold is connected to the lower mold through an electric telescopic rod 54, which can move up and down and form a closed structure through the mating slot. During injection, liquid material is injected through the feed port 52 of the upper mold, and the injection grooves in the upper and lower molds receive the material together. After cooling, the liquid is formed into a dumbbell shape. The whole system achieves efficient injection molding operation through hydraulic drive, vacuum exhaust and electric adjustment, while ensuring no leakage during the exhaust process and internal cleanliness, thus ensuring the molding quality of the product.

[0039] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0040] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An injection mold for manufacturing dumbbells with a venting structure, comprising a lower mold mechanism (1), characterized in that: The lower mold mechanism (1) has a dumbbell body (2) connected to its upper inner wall, a hydraulic rod (3) fixedly connected to one side outer wall of its upper end, a moving plate (4) connected to the lower end of the hydraulic rod (3), a connecting groove (6) opened on the upper outer wall of its upper end, and an upper mold mechanism (5) movably connected to the upper end of its lower mold mechanism (1). The lower mold mechanism (1) includes a lower mold body (11), an extrusion groove (12) is provided on the upper outer wall of the lower mold body (11), a lower mold injection groove (13) is provided on one side of the inner wall of the lower mold body (11), a first venting groove (14) is provided on one side of the inner wall of the lower mold body (11), a fixing block (15) is fixedly connected to one side of the inner wall of the first venting groove (14), a sealing block (16) is fixedly connected to the other side of the fixing block (15), a vacuum groove (17) is provided on one side of the inner wall of the lower mold body (11), a second venting groove (18) is provided on one side of the inner wall of the lower mold body (11), a filter screen (19) is fixedly connected to one side of the inner wall of the second venting groove (18), and a connecting groove (6) is provided on the upper outer wall of the lower mold body (11).

2. The injection mold for dumbbell manufacturing with a venting structure according to claim 1, characterized in that: The upper mold mechanism (5) includes an upper mold body (51), an inlet (52) is fixedly connected to the upper outer wall of the upper mold body (51), an upper mold injection groove (53) is opened on one side of the inner wall of the upper mold body (51), and an electric telescopic rod (54) is fixedly connected to the lower end of one side of the outer wall of the upper mold body (51).

3. The injection mold for dumbbell manufacturing with a venting structure according to claim 2, characterized in that: The electric telescopic rod (54) provided at the lower end of the outer wall of the upper mold body (51) is connected to the connecting groove (6) opened at the upper end of the outer wall of the lower mold body (11).

4. The injection mold for dumbbell manufacturing with a venting structure according to claim 2, characterized in that: The lower end of the upper mold body (51) is movably connected to the inner wall of the extrusion groove (12) opened at the upper end of the lower mold body (11).

5. The injection mold for dumbbell manufacturing with a venting structure according to claim 1, characterized in that: The lower mold injection groove (13) and the first venting groove (14) are both located on one side of the inner wall of the lower mold body (11), and the first venting groove (14) is connected to the lower mold injection groove (13) on one side.

6. The injection mold for dumbbell manufacturing with a venting structure according to claim 1, characterized in that: The movable plate (4) at the lower end of the hydraulic rod (3) is movably connected to the inner wall of the vacuum groove (17) opened on one side of the inner wall of the lower mold body (11).

7. The injection mold for dumbbell manufacturing with a venting structure according to claim 1, characterized in that: The vacuum groove (17) is connected to the first exhaust groove (14) and the second exhaust groove (18) on both sides respectively.

Images