A type of riveting core-pulling mold

Abstract

This utility model provides a riveting core-pulling mold, including an upper mold assembly, a lower mold assembly, and a molding component for injection molding. The upper mold assembly is pressed onto the lower mold assembly. Multiple sets of first and second mounting holes are respectively formed on the upper and lower mold assemblies, with both ends of the molding component residing within them. The molding component includes an upper housing, a lower housing, and a rotating rod. The upper and lower housings are connected to form a molding cavity, and the injection molding component communicates with the molding cavities in the multiple molding components. One end of the rotating rod is a threaded end, and the other end is a rotating end. The threaded end passes through the lower housing and is located within the molding cavity, while the rotating end passes through the second mounting hole. A driving component is provided in the lower mold assembly and connected to the rotating end. The mold uses the upper and lower mold assemblies and multiple mounting holes to fix the molding component. The injection molding component distributes raw materials to each molding cavity via a distribution pipe. The threaded end of the rotating rod forms a thread, and the driving component drives multiple rods to demold synchronously via gear transmission, improving efficiency and consistency.

Description

Technical Field

[0001] This utility model belongs to the field of core-pulling mold technology, and more specifically, it relates to a riveting thread core-pulling mold. Background Technology

[0002] In the manufacturing of plastic products, products with threaded structures are widely used in various industries. Riveting threaded core-pulling molds, as tools for molding and demolding these products, enable thread forming and smooth demolding, providing a reliable guarantee for the mass production of plastic products. However, traditional core-pulling molds typically install multiple molding components to perform multiple injection molding operations simultaneously. Each molding component has a corresponding drive component, resulting in a bulky and complex mold structure that occupies a large amount of space and increases mold manufacturing and installation costs. Furthermore, the independent operation of multiple drive components makes it difficult to ensure synchronization among the molding components. Uneven power and asynchronous operation can easily occur during operation, leading to poor product molding accuracy, high defect rates, and impacting production efficiency and product quality. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model provides a riveting core-pulling mold, which solves the technical problem in the prior art where multiple forming components correspond to multiple driving parts in traditional core-pulling molds, resulting in complex structure, high cost, uneven power, and poor synchronization, thereby affecting product forming accuracy and production efficiency.

[0004] The purpose and effect of this utility model's riveting thread core-pulling mold are achieved by the following specific technical means: A riveting core-pulling mold includes an upper mold assembly, a lower mold assembly, and a molding component for injection molding. The upper mold assembly is pressed onto the lower mold assembly. The upper mold assembly has multiple sets of first mounting holes. The lower mold assembly has second mounting holes corresponding to the first mounting holes. The molding component has two ends that pass through the first mounting holes and the second mounting holes, respectively. The molding assembly includes an upper housing, a lower housing, and a rotating rod. The upper housing is located in the first mounting hole, and the lower housing is located in the second mounting hole. The two are connected to form a molding cavity. The injection molding assembly communicates with the molding cavities of multiple sets of the molding assemblies. One end of the rotating rod is a threaded end, and the other end is a rotating end. The threaded end passes through the lower housing and is located in the molding cavity. The rotating end passes through the second mounting hole. A driving assembly is provided in the lower module, and the driving assembly is connected to the rotating end.

[0005] According to a preferred embodiment, the injection molding assembly includes an injection port, a mounting plate, and a distribution component. The injection port is installed on the top of the upper module. The upper module is composed of multiple upper templates, one of which has a first mounting groove, and the mounting plate is engaged in the first mounting groove. The mounting plate has a slot, the distribution component is engaged in the slot, and the injection port is connected to the distribution component.

[0006] According to a preferred embodiment, the bottom of the dispensing component is provided with multiple sets of dispensing tubes, and the dispensing component is connected to two sets of molding components through each set of the dispensing tubes. The dispensing tube includes two sets of dispensing needle tubes, which are integrally formed with the dispensing component. An injection hole is provided on the upper housing, and one end of the dispensing needle tube passes through the injection hole. The raw material in the dispensing component is injected into the molding cavity through the dispensing needle tube.

[0007] According to a preferred embodiment, the lower module is composed of multiple sets of lower templates, one set of which is provided with a stabilizing plate and the rotating rod passes through the stabilizing plate, and another set of which is provided with two sets of connecting plates, and the multiple sets of rotating rods are rotatably connected to one set of connecting plates respectively.

[0008] According to a preferred embodiment, the drive assembly includes a rotating shaft that passes through the lower module and is rotatably connected to the upper module at one end. Two sets of rotating grooves are provided on one set of the lower module, and the rotating grooves are composed of multiple sets of rotating holes that are connected to adjacent rotating holes. A main gear is provided on the rotating shaft, and connecting gears are provided in multiple sets of rotating holes. The connecting gear in one set of rotating holes in each set of rotating slots meshes with the main gear.

[0009] According to a preferred embodiment, the rotating rod is provided with a driven gear, the driven gear is located in the rotating hole, the connecting gear is located between two sets of driven gears and meshes with the adjacent driven gear, and the multiple sets of driven gears and the multiple sets of connecting gears are arranged in a cross pattern; One set of the connecting gears meshes with the main gear and the driven gear respectively, so that the main gear drives the transmission to one set of the driven gears.

[0010] Compared with the prior art, the present invention has the following beneficial effects: 1. The mold is equipped with a drive assembly, in which the main gear on the rotating shaft meshes with the connecting gear on the rotating rod, and multiple sets of driven gears are arranged in a crisscross pattern with the connecting gears. This allows the main gear to transmit power to each driven gear, thus enabling one drive to rotate multiple molding components. This structure abandons the traditional model of multiple molding components corresponding to multiple drive components, simplifies the mold structure, reduces space occupation and manufacturing and installation costs; the meshing transmission between gears ensures uniform and stable power transmission, ensuring synchronous operation of multiple molding components, effectively improving product molding accuracy, reducing the defect rate, and significantly improving production efficiency.

[0011] 2. The coordination of the injection port, mounting plate, and distribution components, as well as the connection method between the multiple sets of distribution tubes at the bottom of the distribution components and the molding assembly, enables the uniform and efficient distribution of raw materials into each molding cavity. The two sets of distribution needles in the distribution tubes are integrated with the distribution components and pass through the injection holes in the upper housing, ensuring the stability and accuracy of raw material injection. This further guarantees the consistency of product quality, avoids product defects caused by uneven raw material distribution, and provides strong support for the high-quality production of plastic products. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the assembled structure of this utility model; Figure 2 This is a schematic diagram of the disassembled structure of this utility model; Figure 3 This is a schematic diagram of the structure after the upper module is disassembled; Figure 4 This is a schematic diagram of the structure after the molded component is disassembled.

[0013] In the diagram, the correspondence between component names and their corresponding reference numerals is as follows: 11. Upper module; 12. First mounting hole; 13. First mounting groove; 21. Lower module; 22. Second mounting hole; 23. Stabilizing plate; 24. Connecting plate; 25. Rotating groove; 31. Upper housing; 32. Lower housing; 33. Rotating rod; 41. Injection port; 42. Mounting plate; 43. Distributor; 44. Slot; 45. Distributor needle; 51. Rotating shaft; 52. Main gear; 53. Connecting gear; 54. Driven gear. Detailed Implementation

[0014] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the technical solution of this utility model, but should not be used to limit the scope of protection of this utility model.

[0015] Example:

[0016] like Figures 1 to 4As shown, this utility model provides a riveting core-pulling mold, including an upper mold assembly 11, a lower mold assembly 21, and molding components for injection molding. The upper mold assembly 11 is pressed onto the lower mold assembly 21, forming the overall frame of the mold. Multiple sets of first mounting holes 12 on the upper mold assembly 11 and corresponding second mounting holes 22 on the lower mold assembly 21 form a positioning structure. These mounting holes provide mounting positions for the molding components, ensuring accurate placement of the molding components in the mold, fixing the relative positions of each component, avoiding misalignment during injection molding, and ensuring normal operation of the mold.

[0017] The molding assembly consists of an upper housing 31, a lower housing 32, and a rotating rod 33. The upper housing 31 is positioned within the first mounting hole 12, and the lower housing 32 is located within the second mounting hole 22. When connected, they form a molding cavity, which serves as the spatial carrier for molding plastic products. During injection molding, the raw material is injected into this cavity, cooled, and solidified to ultimately form the desired shape of the plastic product. The injection molding assembly communicates with the molding cavities in the multi-cavity molding assembly, allowing the raw material in the injection molding assembly to flow smoothly into each molding cavity, meeting the needs of multi-cavity injection molding and improving production efficiency.

[0018] The rotating rod 33 has clearly defined functional areas. One threaded end passes through the lower housing 32 and is located within the molding cavity. During injection molding, this threaded end contacts the raw material injected into the molding cavity. After the raw material cools and solidifies, a corresponding threaded structure is formed on the plastic product, giving it threaded characteristics. The other rotating end passes through the second mounting hole 22, and a drive assembly located within the lower mold assembly 21 is connected to the rotating end. When the drive assembly operates, power is transmitted to the rotating end, causing the rotating rod 33 to rotate, thereby ejecting the molded plastic product with the threaded structure from the molding cavity, completing the demolding process. This allows the molded product to be smoothly removed from the mold for subsequent production processes.

[0019] The injection molding assembly consists of an injection port 41, a mounting plate 42, and a distribution component 43. The injection port 41 is installed on the top of the upper mold assembly 11 and serves as the entry point for raw materials into the mold. Under the action of the injection molding machine, the plastic raw material enters the mold through the injection port 41. The upper mold assembly 11 consists of multiple upper mold plates, one of which has a first mounting groove 13 for accommodating the mounting plate 42. The mounting plate 42 is engaged within the first mounting groove 13, which provides space for the mounting plate 42 and, to a certain extent, restricts its position, preventing it from moving arbitrarily during the injection molding process.

[0020] The slot 44 on the mounting plate 42 is a placement area for the distribution component 43. The distribution component 43 is secured in the slot 44, which provides support and positioning, ensuring that the distribution component 43 is stably positioned in the mold. The injection port 41 is connected to the distribution component 43, allowing the plastic material entering from the injection port 41 to flow smoothly into the distribution component 43. In subsequent operations, the distribution component 43 will further distribute the material to different molding components within the mold. Therefore, the connection between the injection port 41 and the distribution component 43 is fundamental for the subsequent distribution of the material within the mold, ensuring that the material flows along a predetermined path within the mold to achieve the molding of the plastic product.

[0021] The multiple distribution pipes at the bottom of the distribution component 43 are a key part of the mold for multi-cavity injection molding. Each distribution pipe is connected to two molding components, and its function is to distribute and transport the raw material in the distribution component 43 to different molding components, so that multiple molding cavities can receive raw materials for injection molding at the same time, thereby improving the production efficiency of the mold.

[0022] The distribution tube consists of two sets of distribution needle tubes 45, which are integrally set with the distribution component 43. This integrated structure reduces the possibility of material leakage during transmission, ensuring stable material flow in the pipeline. An injection hole on the upper housing 31 corresponds to one end of the distribution needle tube 45, which passes through the injection hole, allowing direct communication between the distribution needle tube 45 and the molding cavity. When injection begins, the material in the distribution component 43 is smoothly injected into the molding cavity through the distribution needle tube 45 under pressure. This opens up the material transmission path from the distribution component 43 to the molding cavity, ensuring that each molding cavity receives material, allowing the plastic product to be gradually formed within the molding cavity. This meets the requirements of simultaneous injection molding in multiple cavities and ensures the continuity of the production process.

[0023] like Figure 2 , Figure 4 As shown, the lower mold assembly 21 consists of multiple lower mold plates and is an important component of the mold bottom, bearing part of the mold's structure and function. A stabilizing plate 23 on one of the lower mold plates provides a support point for the rotating rod 33. The rotating rod 33 passes through the stabilizing plate 23, which restricts the vertical movement of the rotating rod 33, preventing it from wobbling during rotation and ensuring a stable rotation. Two connecting plates 24 on the other lower mold plate provide a connection base for the rotation of the rotating rod 33. Multiple rotating rods 33 are rotatably connected to one of the connecting plates 24. The connecting plate 24 fixes one end of the rotating rod 33 while allowing it to rotate around the connection point, enabling the power transmitted by the drive assembly to smoothly rotate the rotating rod 33, thereby achieving the demolding operation of the plastic product inside the molding cavity.

[0024] The rotating shaft 51 in the drive assembly passes through the lower module 21, with one end rotatably connected to the upper module 11, serving to connect the upper module 11 and the lower module 21, and also acting as the main component for power transmission. When external power is applied to the rotating shaft 51, the rotating shaft 51 can rotate within the module and transmit power.

[0025] Two sets of rotating grooves 25 are formed on one of the lower templates, consisting of multiple sets of rotating holes that are connected to adjacent rotating holes, providing space for the connecting gear 53 to be placed and rotated. The main gear 52 on the rotating shaft 51 works in conjunction with the connecting gear 53 on the rotating rod 33. The connecting gear 53 is located in the rotating hole, and one set of connecting gears 53 meshes with the main gear 52. When the rotating shaft 51 rotates, the main gear 52 rotates accordingly, driving the connecting gear 53 to rotate through the meshing relationship, thereby transmitting power to the rotating rod 33, enabling the rotating rod 33 to rotate and realizing the demolding operation of the plastic product in the molding cavity.

[0026] The driven gear 54 mounted on the rotating rod 33 is located within the rotating hole and, together with the connecting gear 53, forms a transmission system. The connecting gear 53 is positioned between two sets of driven gears 54 and meshes with adjacent driven gears 54. This arrangement results in a cross-arrangement between multiple sets of driven gears 54 and multiple sets of connecting gears 53. When the main gear 52 rotates, one set of connecting gears 53 acts as an intermediary, meshing with both the main gear 52 and the driven gears 54, transmitting the power of the main gear 52 to one set of driven gears 54. Through this cross-arranged gear transmission structure, power can be sequentially transmitted between multiple gears, driving multiple rotating rods 33 to rotate synchronously, achieving synchronous demolding of plastic products in multiple molding cavities, ensuring normal mold operation and production efficiency.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments.

Claims

1. A riveting core-pulling mold, comprising an upper mold assembly (11) and a lower mold assembly (21) and a molding component for injection molding, characterized in that: The upper module (11) is pressed onto the lower module (21). The upper module (11) has multiple sets of first mounting holes (12). The lower module (21) has second mounting holes (22) corresponding to the first mounting holes (12). The two ends of the molding component are respectively inserted into the first mounting holes (12) and the second mounting holes (22). The molding assembly includes an upper housing (31), a lower housing (32), and a rotating rod (33). The upper housing (31) is located in the first mounting hole (12), and the lower housing (32) is located in the second mounting hole (22). The two are connected to form a molding cavity. The injection molding assembly communicates with the molding cavities in multiple sets of the molding assembly. One end of the rotating rod (33) is a threaded end and the other end is a rotating end. The threaded end passes through the lower housing (32) and is located in the molding cavity. The rotating end passes through the second mounting hole (22). A driving assembly is provided in the lower module (21). The driving assembly is connected to the rotating end.

2. The riveting thread core-pulling mold according to claim 1, characterized in that: The injection molding assembly includes an injection port (41), a mounting plate (42), and a distribution component (43). The injection port (41) is installed on the top of the upper module (11). The upper module (11) is composed of multiple upper templates, one of which has a first mounting groove (13). The mounting plate (42) is fitted into the first mounting groove (13). The mounting plate (42) has a slot (44) and the distribution component (43) is fitted into the slot (44). The injection port (41) is connected to the distribution component (43).

3. The riveting thread core-pulling mold according to claim 2, characterized in that: The bottom of the distribution component (43) is provided with multiple sets of distribution tubes, and the distribution component (43) is connected to two sets of molding components through each set of distribution tubes; The distribution tube includes two sets of distribution needle tubes (45). The distribution needle tubes (45) are integrally formed with the distribution component (43). The upper housing (31) has an injection hole. One end of the distribution needle tube (45) passes through the injection hole. The raw material in the distribution component (43) is injected into the molding cavity through the distribution needle tube (45).

4. The riveting thread core-pulling mold according to claim 1, characterized in that: The lower module (21) is composed of multiple sets of lower templates. One set of the lower templates is provided with a stabilizing plate (23), and the rotating rod (33) passes through the stabilizing plate (23). The other set of the lower templates is provided with two sets of connecting plates (24), and the multiple sets of rotating rods (33) are rotatably connected to one set of connecting plates (24).

5. A riveting thread core-pulling mold according to claim 4, characterized in that: The drive assembly includes a rotating shaft (51) which passes through the lower module (21) and is rotatably connected to the upper module (11) at one end. Two sets of rotating grooves (25) are provided on one set of the lower template. The rotating grooves (25) are composed of multiple sets of rotating holes that are connected to adjacent rotating holes. A main gear (52) is provided on the rotating shaft (51), and a connecting gear (53) is provided on the rotating rod (33). The connecting gear (53) is located in the rotating hole, and one set of the connecting gears (53) meshes with the main gear (52).

6. A riveting thread core-pulling mold according to claim 5, characterized in that: The rotating rod (33) is provided with a driven gear (54), the driven gear (54) is located in the rotating hole, the connecting gear (53) is located between two sets of driven gears (54) and meshes with the adjacent driven gear (54), and the multiple sets of driven gears (54) and the multiple sets of connecting gears (53) are arranged in a cross pattern; One set of the connecting gears (53) meshes with the main gear (52) and the driven gear (54) respectively, so that the main gear (52) is driven to one set of the driven gears (54).

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