Directional thread core-pulling mechanism

By designing a snap-fit ​​connection and a cooling water circulation system, the threaded core can be quickly replaced and the plastic can be rapidly cooled, solving the problems of applicability and insufficient cooling of existing devices, and improving production efficiency and product quality.

CN224044444UActive Publication Date: 2026-03-27SUZHOU RUIYOUDA MOULD TECH SERVICE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-12-15
Publication Date
2026-03-27

AI Technical Summary

Technical Problem

Existing threaded core pulling devices cannot be flexibly adjusted to accommodate threaded cores of different sizes, and the lack of a cooling system leads to low production efficiency and unstable product quality.

Method used

A directional threaded core-pulling mechanism was designed, which enables quick replacement of threaded cores through a snap-fit ​​connection mechanism, and is equipped with a cooling water circulation system to accelerate the cooling and curing of plastics.

Benefits of technology

It improves the versatility and production efficiency of the equipment, ensures product quality and shape stability, and avoids the risk of deformation due to insufficient cooling.

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Abstract

The utility model provides a directional thread core pulling mechanism which comprises an operation plate, a water tank is fixedly mounted on the lower surface of the operation plate, four fixing rods are fixedly mounted on the upper surface of the operation plate, a top plate is fixedly mounted at the tops of the four fixing rods, and two hydraulic rods are fixedly mounted on the upper surface of the top plate; sliding plates are fixedly mounted at the telescopic ends of the two hydraulic rods and slidably connected with the fixing rods. Through the use of the connecting mechanism, the connecting block on the lower surface of the rotating shaft is connected with the mounting block on the upper surface of the threaded core in a clamping manner, so that the stable mounting of the threaded core on the rotating shaft is ensured, and an operator can easily replace threaded cores with different sizes according to actual requirements; when the directional thread core-pulling mechanism is used, the mounting block and the connecting groove are simply aligned and clamped, so that quick mounting can be realized, and the universality and the practicability of the directional thread core-pulling mechanism are improved.
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Description

TECHNICAL FIELD

[0001] The utility model relates to the threaded core pulling related field, specifically, a directional threaded core pulling mechanism. BACKGROUND

[0002] Threaded core pulling is an advanced mold forming technology, widely used in the production process of plastic products, especially in the manufacture of parts with internal and external threaded structure. The technology is particularly important. Through the clever design of the threaded core, it is closely combined with the molten plastic during the injection molding stage, and after the plastic is cooled and solidified, the threaded core is smoothly and accurately pulled out of the mold with the help of a precise core pulling mechanism, thereby perfectly replicating the required thread pattern on the product.

[0003] The prior art disclosed in patent publication (announcement) No. CN218366266U discloses a threaded core pulling device based on injection mold, comprising a base, a fixing device, two groups of guide columns, a support plate, a rotating device, a first hydraulic cylinder, a plurality of second hydraulic cylinders, a plurality of telescopic columns, a plurality of pressing plates and a plurality of springs, the fixing device is arranged at the top center of the base, the bottom ends of the two groups of guide columns are connected with the top end of the base, the support plate is slidably sleeved on the two groups of guide columns, and the fixed ends of the two groups of first hydraulic cylinders are respectively installed at the top end of the base.

[0004] In the above patent document, a threaded core pulling device based on injection mold is disclosed, which can solve the problem of directly clamping and fixing the threaded core with the U-shaped clamping plate and pulling it upward, reducing the stability of the mold during core pulling. However, the deficiency is that:

[0005] The device only supports the use of threaded cores of specific sizes, and cannot be flexibly adjusted to adapt to threaded cores of different sizes, which limits its application range to some extent and reduces the practicality and universality of the device. Moreover, during the injection molding process, the plastic melt needs to be rapidly cooled and solidified to achieve the designed shape and performance. However, the device does not have a cooling system, which means that the mold and the molded product cannot be effectively cooled before or during the threaded core pulling operation, which may prolong the production cycle, affect the production efficiency, and increase the risk of product deformation or unstable quality.

[0006] Therefore, we improve it and propose a directional threaded core pulling mechanism. UTILITY MODEL CONTENT

[0007] In view of the deficiencies of the prior art, the utility model provides a directional threaded core pulling mechanism to solve the problems mentioned in the background art.

[0008] In order to achieve the above utility model purposes, the utility model provides the following technical solutions:

[0009] The core-pulling mechanism is oriented to solve the above problems.

[0010] The application is specifically as follows:

[0011] The operation plate is provided with a water tank fixedly installed on the lower surface, four fixed rods fixedly installed on the upper surface, a top plate fixedly installed on the top of the four fixed rods, two hydraulic rods fixedly installed on the upper surface of the top plate, a sliding plate fixedly installed on the extension end of the two hydraulic rods, a first motor fixedly installed on the upper surface of the sliding plate, a rotating shaft fixedly connected to the output end of the first motor, a threaded core provided on the lower side of the rotating shaft, a connecting mechanism provided between the threaded core and the rotating shaft, a fixed block fixedly installed on the upper surface of the operation plate, a fixing mechanism provided in the fixed block, and a heat dissipation mechanism provided on the upper side of the operation plate.

[0012] The lower surface of the rotating shaft is provided with a connecting block fixedly installed thereon, and the connecting block is provided with a connecting groove in the interior.

[0013] As a preferred technical solution of the application, the interior of the rotating shaft is provided with a first sliding groove, and a clamping block is slidably connected in the first sliding groove, and the clamping block is in a rectangular shape.

[0014] As a preferred technical solution of the application, a spring is fixedly installed between the clamping block and the inner wall of the clamping groove, and a notch is formed on both sides of the first sliding groove, and a push block is slidably connected in the interior of the notch, and the two push blocks are fixedly connected to the clamping block.

[0015] As a preferred technical solution of the application, two second sliding grooves are formed on the upper surface of the fixed block, and a sliding block is slidably connected in the interior of each second sliding groove, a clamping plate is fixedly installed on the upper surface of each sliding block, and a rubber pad is fixedly installed on one side surface of the clamping plate.

[0016] As a preferred technical solution of the application, a threaded rod is rotatably connected in the interior of each second sliding groove, the threads on both ends of the threaded rod are oppositely arranged, and the two sliding blocks are threadedly connected to the threaded rod, a second motor is fixedly installed in the interior of the fixed block, and the output end of the second motor is fixedly connected to the threaded rod.

[0017] As a preferred technical solution of the application, the heat dissipation mechanism comprises two fixed cylinders, and each fixed cylinder is fixedly installed with a fixed pipe in the interior, one end of the fixed pipe is in a curved shape, and a spray head is fixedly installed on the end surface of the fixed pipe.

[0018] As the preferred technical scheme of the present application, the top of the water tank is provided with two connecting pipes, the top ends of the two connecting pipes are communicated with two fixed pipes, a connecting tee is fixedly installed between the bottom ends of the two connecting pipes, a submersible pump is fixedly installed at the bottom of the water tank, a water pumping pipe is fixedly installed on one side surface of the submersible pump, a water discharging pipe is fixedly installed on the other side surface of the submersible pump, and the other end of the water discharging pipe is communicated with the connecting tee.

[0019] Compared with the prior art, the present application has the following beneficial effects:

[0020] In the scheme of the present application:

[0021] 1. By using the connecting mechanism, the clamping connection between the connecting block on the lower surface of the rotating shaft and the mounting block on the upper surface of the threaded core is ensured. This design not only ensures the stable installation of the threaded core on the rotating shaft, but also allows the operator to easily replace threaded cores of different sizes according to actual needs. Only by simply aligning and clamping the mounting block and the connecting groove, quick installation can be achieved, improving the versatility and practicality of the directional threaded core pulling mechanism.

[0022] 2. By using the heat dissipation mechanism, the cooling water circulation system composed of the fixed cylinder, the fixed pipe, the spray head and other components uses the cooling water in the water tank to be delivered to the fixed pipe through the connecting pipe by the power of the submersible pump, and then uniformly sprayed to the surface of the mold and the molded product by the spray head. This process not only accelerates the cooling and solidification of the plastic melt, ensuring that the product meets the design requirements for shape and performance, but also effectively avoids the risk of product deformation or unstable quality caused by insufficient cooling. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the first three-dimensional structure schematic view of the present application;

[0024] Figure 2 It is the second three-dimensional structure schematic view of the present application;

[0025] Figure 3 It is the three-dimensional structure schematic view of the connecting mechanism of the present application;

[0026] Figure 4 It is the structure schematic view of the rotating shaft section of the present application;

[0027] Figure 5 It is the structure schematic view of the fixed mechanism section of the present application;

[0028] Figure 6 It is the structure schematic view of the heat dissipation mechanism section of the present application.

[0029] Indications in the figure:

[0030] 1, operation board; 2, water tank; 3, fixed rod; 4, top plate; 5, hydraulic rod; 6, sliding plate; 7, first motor; 8, rotating shaft; 9, threaded core; 10, connecting mechanism; 1001, connecting block; 1002, connecting groove; 1003, mounting block; 1004, first sliding groove; 1005, clamping block; 1006, clamping groove; 1007, spring; 1008, notch; 1009, push block; 11, fixed block; 12, fixing mechanism; 1201, second sliding groove; 1202, sliding block; 1203, clamping plate; 1204, rubber pad; 1205, threaded rod; 1206, second motor; 13, heat dissipation mechanism; 1301, fixed cylinder; 1302, fixed pipe; 1303, nozzle; 1304, connecting pipe; 1305, connecting tee; 1306, submersible pump; 1307, water suction pipe; 1308, drain pipe. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings. Obviously, the described examples are part of the embodiments of the present application, rather than all the embodiments.

[0032] Therefore, the following detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but merely represents some embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0033] It should be noted that the embodiments in the present application and the features and technical solutions in the embodiments can be combined with each other without conflict.

[0034] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0035] In the description of the present application, it should be noted that the orientation or position relationship indicated by the terms "upper", "lower", etc. is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship commonly used when the product of the present application is used, or the orientation or position relationship commonly understood by those skilled in the art, such terms are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the present application. In addition, the terms "first", "second", etc. are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0036] To solve the technical problems in the background art, the directional thread core-pulling mechanism is given as follows:

[0037] In combination with Figure 1 - Figure 6 The utility model provides a directional thread core-pulling mechanism, including operation board 1, the lower surface fixed mounting of operation board 1 has water tank 2, and the upper surface fixed mounting of operation board 1 has four fixed links 3, and the top fixed mounting of four fixed links 3 has top plate 4, the upper surface fixed mounting of top plate 4 has two hydraulic rams 5, and the telescopic end fixed mounting of two hydraulic rams 5 has sliding plate 6, and sliding plate 6 is connected with fixed link 3 slidingly, the upper surface fixed mounting of sliding plate 6 has first motor 7, and the output fixed connection of first motor 7 has rotating shaft 8, the downside of rotating shaft 8 is provided with threaded core 9, and is provided with connecting mechanism 10 between threaded core 9 and rotating shaft 8, the upper surface fixed mounting of operation board 1 has fixed block 11, and is provided with fixed mechanism 12 in fixed block 11, and the upside of operation board 1 is provided with heat dissipation mechanism 13, the lower surface fixed mounting of rotating shaft 8 has connecting block 1001, and connecting block 1001 is fixedly installed on the lower surface of rotating shaft 8, and the inside of connecting block 1001 is provided with connecting groove 1002, the upper surface fixed mounting of threaded core 9 has mounting block 1003, and the connecting mode of mounting block 1003 and connecting groove 1002 is snap connection.

[0038] In this embodiment: operation board 1 stably supports the whole device, and the water tank 2 installed on the lower surface thereof provides the necessary cooling water source for the heat dissipation mechanism 13, the four fixed links 3 on the upper surface of the operation board 1 are connected with the top plate 4, forming a stable support frame, the two hydraulic rams 5 installed on the top plate 4 drive the sliding plate 6 to slide on the fixed links 3 through the telescopic ends thereof, realizing accurate movement in the vertical direction, the first motor 7 fixedly installed on the sliding plate 6 drives the rotating shaft 8 to rotate, and the rotating shaft 8 is connected with the threaded core 9 through the connecting mechanism 10 on the downside thereof, when core pulling is needed, the threaded core 9 can be driven to rotate by the first motor 7, and at the same time, the sliding plate 6 is moved upward, facilitating core pulling work, the connecting mechanism 10 is composed of the connecting block 1001 on the lower surface of the rotating shaft 8 and the mounting block 1003 on the upper surface of the threaded core 9, and they are connected in the snap connection mode, which not only ensures the stability of the connection, but also facilitates quick replacement of threaded cores 9 of different sizes according to different needs; the fixed mechanism 12 arranged in the fixed block 11 on the operation board 1 can firmly fix the mold, and the heat dissipation mechanism 13 effectively accelerates the cooling and solidification in the injection molding process, ensuring product quality and production efficiency.

[0039] Reference Figure 3 and Figure 4On the basis of the above-mentioned embodiment, in order to facilitate the fixing of the mounting block 1003 in the connecting groove 1002, the embodiment is designed as follows:

[0040] As a preferred embodiment, the first sliding groove 1004 is arranged in the rotating shaft 8, and the clamping block 1005 is slidably connected in the first sliding groove 1004. The clamping block 1005 is arranged in a rectangular shape, and the upper surface of the mounting block 1003 is provided with the clamping groove 1006. The clamping block 1005 is connected with the clamping groove 1006 in a clamping manner.

[0041] In the embodiment, the first sliding groove 1004 arranged in the rotating shaft 8 and the clamping block 1005 connected therewith facilitate the fixing of the mounting block 1003 in the connecting groove 1002. The clamping connection between the clamping block 1005 and the clamping groove 1006 is stable, and the clamping block 1005 can be automatically clamped into the clamping groove 1006 through the elastic force of the spring 1007, thereby achieving the purpose of fixing.

[0042] Reference Figure 3 and Figure 4 On the basis of the above-mentioned embodiment, in order to facilitate the disassembly and replacement of the mounting block 1003 and the threaded core 9, the embodiment is designed as follows:

[0043] As a preferred embodiment, the spring 1007 is fixedly arranged between the clamping block 1005 and the inner wall of the clamping groove 1006. The slot 1008 is arranged on both sides of the first sliding groove 1004, and the push block 1009 is slidably arranged in the slot 1008. The two push blocks 1009 are fixedly connected with the clamping block 1005.

[0044] In the embodiment, the slot 1008 and the push block 1009 allow the user to overcome the elastic force of the spring 1007 by pushing the push block 1009, so that the clamping block 1005 is detached from the clamping groove 1006. Therefore, the mounting block 1003 and the threaded core 9 can be easily disassembled and replaced. The quick replacement of the mounting block 1003 and the threaded core 9 can be achieved through simple operation, thereby improving the flexibility and applicability of the equipment.

[0045] Reference Figure 1 and Figure 5 On the basis of the above-mentioned embodiment, in order to fix the mold to be fixed on the upper surface of the fixing block 11, the embodiment is designed as follows:

[0046] As a preferred embodiment, the upper surface of the fixing block 11 is provided with two second sliding grooves 1201, and the sliding block 1202 is slidably arranged in the second sliding groove 1201. The clamping plate 1203 is fixedly arranged on the upper surface of the sliding block 1202, and the rubber pad 1204 is fixedly arranged on one side surface of the clamping plate 1203.

[0047] In the embodiment, the second sliding groove 1201, the sliding block 1202 and the clamping plate 1203 on the upper surface of the fixed block 11 are designed to facilitate the fixing of the mold on the upper surface of the fixed block 11. The rubber pad 1204 on one side of the clamping plate 1203 not only increases the clamping force, but also protects the surface of the mold from damage. This design not only improves the stability and reliability of the mold fixing, but also helps to prolong the service life of the mold.

[0048] Reference Figure 5 On the basis of the above-mentioned embodiment, in order to drive the relative movement of the sliding blocks 1202 on both sides, the following design is given in the embodiment:

[0049] As a preferred embodiment, the two second sliding grooves 1201 are rotatably connected with threaded rods 1205, the threaded directions of the threaded rods 1205 at both ends are oppositely arranged, the two sliding blocks 1202 are threadedly connected with the threaded rods 1205, and the fixed block 11 is internally fixedly installed with a second motor 1206, and the output end of the second motor 1206 is fixedly connected with the threaded rod 1205.

[0050] In the embodiment, the relative movement of the sliding blocks 1202 on both sides is realized through the threaded rod 1205 rotating in the second sliding groove 1201 and the sliding block 1202 threadedly connected therewith. The driving action of the second motor 1206 enables the threaded rod 1205 to rotate, thereby driving the sliding block 1202 to slide along the second sliding groove 1201, realizing the clamping and releasing of the mold.

[0051] Reference Figure 1 and Figure 6 On the basis of the above-mentioned embodiment, in order to be able to quickly cool the plastic melt after injection molding in the mold, the following design is given in the embodiment:

[0052] As a preferred embodiment, the heat dissipation mechanism 13 comprises two fixed cylinders 1301, and the two fixed cylinders 1301 are internally fixedly installed with fixed pipes 1302, one end of the fixed pipe 1302 is arranged in a curved shape, and the surface of one end of the fixed pipe 1302 is fixedly installed with a spray head 1303.

[0053] In the embodiment, the design of the heat dissipation mechanism 13 includes components such as the fixed cylinder 1301, the fixed pipe 1302 and the spray head 1303, realizing the rapid cooling of the plastic melt after injection molding in the mold. The curved design of one end of the fixed pipe 1302 and the uniform distribution of the spray head 1303 enable the cooling water to be uniformly sprayed on the surface of the mold, improving the cooling efficiency; helping to shorten the injection molding cycle and improve the product quality; avoiding the risk of product deformation or unstable quality due to insufficient cooling.

[0054] ReferenceFigure 6 In order to spray water from the spray head 1303, the embodiment is designed as follows based on the above-mentioned embodiment:

[0055] As a preferred embodiment, the top of the water tank 2 is provided with two connecting pipes 1304, the top ends of the two connecting pipes 1304 are communicated with the two fixed pipes 1302, and the bottom ends of the two connecting pipes 1304 are fixedly installed with a connecting tee 1305, the bottom of the water tank 2 is fixedly installed with a submersible pump 1306, one side surface of the submersible pump 1306 is fixedly installed with a water suction pipe 1307, the other side surface of the submersible pump 1306 is fixedly installed with a water discharge pipe 1308, and the other end of the water discharge pipe 1308 is communicated with the connecting tee 1305.

[0056] In the embodiment, the combination of the connecting pipes 1304, the connecting tee 1305, the submersible pump 1306, the water suction pipe 1307 and the water discharge pipe 1308 at the top of the water tank 2 realizes the circulating supply of cooling water. The driving action of the submersible pump 1306 enables the cooling water to be pumped out of the water tank 2, sprayed out of the spray head 1303 through the connecting tee 1305 and the fixed pipe 1302, and the mold is cooled.

[0057] The above is the working process of the entire device, and the contents not described in detail in the specification all belong to the prior art known to those skilled in the art.

[0058] The above embodiments are only used to illustrate the technical solutions described in the present application and do not limit the technical solutions described in the present application. Although the present application has been described in detail with reference to the above-mentioned embodiments, the present application is not limited to the above-mentioned specific embodiments, therefore any modification or equivalent replacement of the present application; all technical solutions and improvements without departing from the spirit and scope of the present application, they are all covered in the scope of the claims of the present application.

Claims

1. A directional thread core-pulling mechanism comprising an operating plate (1), characterized in that: The lower surface of the operation plate (1) is fixedly installed with a water tank (2), the upper surface of the operation plate (1) is fixedly installed with four fixed rods (3), the top of the four fixed rods (3) is fixedly installed with a top plate (4), the upper surface of the top plate (4) is fixedly installed with two hydraulic rods (5), the telescopic ends of the two hydraulic rods (5) are fixedly installed with a sliding plate (6), the sliding plate (6) is slidably connected with the fixed rods (3), the upper surface of the sliding plate (6) is fixedly installed with a first motor (7), the output end of the first motor (7) is fixedly connected with a rotating shaft (8), the lower side of the rotating shaft (8) is provided with a threaded core (9), a connecting mechanism (10) is arranged between the threaded core (9) and the rotating shaft (8), the upper surface of the operation plate (1) is fixedly installed with a fixed block (11), the inside of the fixed block (11) is provided with a fixing mechanism (12), and the upper side of the operation plate (1) is provided with a heat dissipation mechanism (13). The lower surface of the rotating shaft (8) is fixedly installed with a connecting block (1001), the connecting block (1001) is fixedly installed on the lower surface of the rotating shaft (8), and the inside of the connecting block (1001) is provided with a connecting groove (1002), the upper surface of the threaded core (9) is fixedly installed with a mounting block (1003), and the mounting block (1003) is connected with the connecting groove (1002) in a clamping manner.

2. A directional thread core-pulling mechanism according to claim 1, wherein: The inside of the rotating shaft (8) is provided with a first sliding groove (1004), the first sliding groove (1004) is slidably connected with a clamping block (1005), and the clamping block (1005) is arranged in a rectangular shape, the upper surface of the mounting block (1003) is provided with a clamping groove (1006), and the clamping block (1005) is connected with the clamping groove (1006) in a clamping manner.

3. A directional thread core-pulling mechanism according to claim 2, wherein: The spring (1007) is fixedly installed between the clamping block (1005) and the inner wall of the clamping groove (1006), the two sides of the first sliding groove (1004) are provided with notches (1008), the inside of each notch (1008) is slidably connected with a pushing block (1009), and the two pushing blocks (1009) are fixedly connected with the clamping block (1005).

4. A directional thread core-pulling mechanism according to claim 1, wherein: The upper surface of the fixed block (11) is provided with two second sliding grooves (1201), the inside of each second sliding groove (1201) is slidably connected with a sliding block (1202), the upper surfaces of the two sliding blocks (1202) are fixedly installed with a clamping plate (1203), and the side surface of the clamping plate (1203) is fixedly installed with a rubber pad (1204).

5. A directional thread core-pulling mechanism according to claim 4, wherein: The inside of each second sliding groove (1201) is rotatably connected with a threaded rod (1205), the screw threads at the two ends of the threaded rod (1205) are arranged in opposite directions, the two sliding blocks (1202) are threadedly connected with the threaded rod (1205), the inside of the fixed block (11) is fixedly installed with a second motor (1206), and the output end of the second motor (1206) is fixedly connected with the threaded rod (1205).

6. A directional thread core-pulling mechanism according to claim 1, wherein: The heat dissipation mechanism (13) comprises fixing cylinders (1301), two fixing cylinders (1301) are arranged, and the interiors of the two fixing cylinders (1301) are fixedly installed with fixing pipes (1302), one end of the fixing pipe (1302) is arranged in a curved shape, and the surface of one end of the fixing pipe (1302) is fixedly installed with a spray head (1303).

7. A directional thread core-pulling mechanism according to claim 6, wherein: The top of the water tank (2) is provided with two connecting pipes (1304), the top ends of the two connecting pipes (1304) are communicated with the two fixing pipes (1302), and the bottom ends of the two connecting pipes (1304) are fixedly installed with a connecting tee (1305); the bottom of the water tank (2) is fixedly installed with a submersible pump (1306), one side surface of the submersible pump (1306) is fixedly installed with a water pumping pipe (1307), the other side surface of the submersible pump (1306) is fixedly installed with a water discharging pipe (1308), and the other end of the water discharging pipe (1308) is communicated with the connecting tee (1305).

Citation Information

Patent Citations

  • Threaded core-pulling device based on injection mold

    CN218366266U