A multi-directional core-pulling structure suitable for air-laid chair mold

Abstract

The utility model discloses a kind of multidirectional core-pulling structure suitable for air-laid chair mould, including main plug, main plug bottom is equipped with hydraulic cylinder, driving rod is connected between hydraulic cylinder and main plug;Side insert component, side insert component is equipped in the both sides of main plug, for providing multi-angle core-pulling to rotate adjustment and side insertion;Positioning assembly, positioning assembly is equipped in the junction of side insert component and main plug, for the position of fixed side insert component.This kind of side insert component can be flexibly adjusted angle and length, can accurately adapt the complex cavity structure of air-laid chair mould, effectively solve the problem of insufficient adaptability of existing structure to multidirectional curved surface, different depth cavity, positioning assembly can be stably locked to side insert component, avoid position deviation due to stress in high-pressure injection molding process, significantly reduce product flash, material deficiency and other defects, solve the problem of unreliable positioning of existing structure.

Description

Technical Field

[0001] This utility model relates to the technical field of multi-directional core-pulling structure adapted to air-cushioned chair molds, specifically a multi-directional core-pulling structure adapted to air-cushioned chair molds. Background Technology

[0002] With the upgrading of modern furniture manufacturing, air-cushioned chairs are becoming increasingly widely used in office and home settings due to their excellent breathability, support, and adjustability. The core components of air-cushioned chairs, such as the seat and backrest, are mostly manufactured using integrated injection molding. The rationality of the mold structure directly determines the product molding accuracy and production efficiency. The core-pulling mechanism, as a key component of the injection mold, is mainly used for lateral recesses, holes, or complex curved surface structures on the molded product that cannot be directly demolded. For products like air-cushioned chairs with multi-directional curved surface connections, the adaptability of the angle and length of the core-pulling mechanism is a core challenge in mold design.

[0003] Existing core-pulling structures for air-cushioned chair molds mostly employ a single-direction fixed insert design or can only achieve limited manual adjustment, making it difficult to adapt to the complex cavity structure requirements of air-cushioned chairs. Furthermore, while some adjustable core-pulling mechanisms can achieve angle adjustment, they lack stable positioning devices, making them prone to positional shifts under pressure during high-pressure injection molding, leading to defects such as flash and material shortages in the product. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a multi-directional core-pulling structure adapted to air-cushioned chair molds, thereby solving problems such as difficulty in matching the cavity and difficulty in positioning in existing multi-directional core-pulling structures adapted to air-cushioned chair molds.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-directional core-pulling structure adapted to an air-cushioned chair mold, comprising a main insert block, a hydraulic cylinder at the bottom of the main insert block, and a drive rod connected between the hydraulic cylinder and the main insert block; a side insert assembly located on both sides of the main insert block for rotational adjustment to perform lateral insertion and provide multi-angle core pulling; and a positioning assembly located at the junction of the side insert assembly and the main insert block for fixing the position of the side insert assembly.

[0006] Preferably, the side insertion assembly includes: inclined insertion blocks slidably connected to both sides of the main insertion block, and the inclined insertion blocks being on the main insertion block; an inclined insertion platform provided on the surface of the inclined insertion blocks, a primary insertion block slidably connected inside the inclined insertion platform, and a secondary insertion block slidably connected inside the primary insertion block; and a connecting pipe opened inside the drive rod, the connecting pipe communicating with the interior of the inclined insertion platform.

[0007] Preferably, the positioning component includes: positioning grooves formed on both sides of the main insert block; sliders provided on both sides of the inclined insert block, and the sliders are slidably connected to the positioning grooves; and locking bolts are threadedly engaged on the sliders.

[0008] Preferably, a return spring is provided at the gap between the primary insertion block, the secondary insertion block, and the inclined insertion platform.

[0009] Preferably, a liquid guiding groove is formed on the surface of the inclined insertion block, a liquid guiding pipe is provided in the liquid guiding groove, the liquid guiding pipe is connected to the connecting pipe, and the liquid guiding pipe is a retractable flexible pipe.

[0010] Preferably, the connecting pipe has a delay pipe inside, and the delay pipe is arranged in an "S"-shaped curved structure.

[0011] Preferably, the positioning groove and the surface of the slider have multiple anti-slip grooves, and the multiple anti-slip grooves are equidistantly distributed.

[0012] This utility model provides a multi-directional core-pulling structure adapted to air-cushioned chair molds, which has the following beneficial effects: the side insertion component can flexibly adjust its angle and length, and can accurately adapt to the complex cavity structure of the air-cushioned chair mold, effectively solving the problem of insufficient adaptability of existing structures to multi-directional curved surfaces and cavities of different depths; the positioning component can stably lock the side insertion component, avoiding positional displacement due to force during high-pressure injection molding, significantly reducing defects such as flash and material shortage in the product, and solving the problem of unreliable positioning in existing structures. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the multi-directional core-pulling structure of the gas-supported chair mold of this utility model. Figure 2 This is a cross-sectional schematic diagram of the multi-directional core-pulling structure of the gas-supported chair mold of this utility model. Figure 3 This is a schematic diagram of the inclined insert block of the multi-directional core-pulling structure adapted to the gas-supported chair mold of this utility model. Figure 4 This is a cross-sectional schematic diagram of the inclined insert block of the multi-directional core-pulling structure adapted to the gas-supported chair mold of this utility model.

[0014] Figure 5 This utility model provides a multi-directional core-pulling structure adapted to air-cushioned chair molds. Figure 2 Enlarged schematic diagram of the structure at point A in the diagram.

[0015] In the diagram: 100-Main insertion block; 110-Hydraulic cylinder; 120-Drive rod; 121-Connecting pipe; 122-Delaying pipe; 200-Side insertion assembly; 210-Angled insertion block; 211-Angled insertion platform; 212-First-stage insertion block; 213-Second-stage insertion block; 214-Reset spring; 220-Guide groove; 221-Guide pipe; 300-Positioning assembly; 310-Positioning groove; 320-Slider; 330-Locking bolt; 340-Anti-slip groove. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-5 This utility model provides a technical solution: a multi-directional core-pulling structure adapted to an air-cushioned chair mold, including a main insertion block 100, a hydraulic cylinder 110 at the bottom of the main insertion block 100, and a drive rod 120 connected between the hydraulic cylinder 110 and the main insertion block 100; a side insertion assembly 200, which is disposed on both sides of the main insertion block 100 and is used for rotational adjustment to perform lateral insertion and provide multi-angle core pulling; and a positioning assembly 300, which is disposed at the connection between the side insertion assembly 200 and the main insertion block 100 and is used to fix the position of the side insertion assembly 200. The multi-directional core-pulling structure operates with the main insertion block 100 as the core driving force transmission carrier. After startup, the hydraulic cylinder 110 generates linear driving force, which is transmitted to the main insertion block 100 through the drive rod 120, causing the main insertion block 100 to move in the basic direction. The side insertion components 200 on both sides of the main insertion block 100 respond synchronously, changing the insertion angle through their own rotation adjustment mechanism to complete the lateral insertion action, forming a multi-directional core-pulling layout. When the side insertion components 200 are adjusted to the target angle, the positioning component 300 located at the connection between the side insertion components 200 and the main insertion block 100 is immediately activated to lock the position of the side insertion components 200, ensuring that the entire core-pulling structure maintains a stable posture during operation and avoiding the impact of positional displacement on the mold forming accuracy. By combining the basic drive of the main insert block 100 with the rotational adjustment of the side insert assembly 200, the limitations of traditional single-direction core pulling are broken through. It can adapt to the complex cavity structure of the air-cushioned chair mold, meet the multi-angle molding requirements, and improve the mold's adaptability to the product structure.

[0018] Preferably, the side insertion assembly 200 includes: an inclined insertion block 210 slidably connected to both sides of the main insertion block 100, and the inclined insertion block 210 is located on the main insertion block 100; an inclined insertion platform 211 is provided on the surface of the inclined insertion block 210, a primary insertion block 212 is slidably connected inside the inclined insertion platform 211, and a secondary insertion block 213 is slidably connected inside the primary insertion block 212; and a connecting pipe 121 is opened inside the drive rod 120, and the connecting pipe 121 communicates with the interior of the inclined insertion platform 211. The operation of the side insertion assembly 200 is triggered by the movement of the main insertion block 100. When the main insertion block 100 moves, it drives the inclined insertion blocks 210 that are slidably connected on both sides to move synchronously. The inclined insertion platform 211 on the surface of the inclined insertion block 210 is adjusted in position along with the inclined insertion block 210. When it is necessary to adapt to the core pulling requirements of different depths, the connecting pipe 121 delivers hydraulic oil or other driving medium from inside the drive rod 120 to inside the inclined insertion platform 211. The medium pressure pushes the first-stage insertion block 212 inside the inclined insertion platform 211 to extend outward. If it is necessary to further extend the core pulling length, the second-stage insertion block 213 inside the first-stage insertion block 212 can continue to extend under the action of subsequent medium pressure, realizing multi-level adjustment of the core pulling length. When the core pulling is completed, the medium pressure is released, and the first-stage insertion block 212 and the second-stage insertion block 213 are retracted to the initial position under the action of the reset mechanism or the mold return force. The inclined insertion block 210 is reset with the main insertion block 100, completing one core pulling cycle. The sliding connection between the inclined insertion block 210 and the main insertion block 100, combined with the inclined structure of the inclined insertion stage 211, enables flexible adjustment of the core-pulling angle. The nested sliding design of the first-level insertion block 212 and the second-level insertion block 213 allows for multi-level adjustment of the core-pulling length according to the mold cavity depth, improving the adaptability of the component to complex mold structures.

[0019] Preferably, a return spring 214 is provided in the gap between the primary insertion block 212, the secondary insertion block 213, and the inclined insertion platform 211. Before the core-pulling action is initiated, the return spring 214 is in a natural extension and contraction state, and the primary insertion block 212 and the secondary insertion block 213 retract into the inclined insertion platform 211 and the primary insertion block 212 under the action of the spring preload. When the driving medium conveyed by the connecting pipe 121 enters the inclined insertion platform 211 and generates pressure, the pressure overcomes the elastic force of the return spring 214 and pushes the primary insertion block 212 outward. As the medium pressure continues to increase, the secondary insertion block 213 inside the primary insertion block 212 simultaneously overcomes the elastic force of the corresponding return spring 214 and extends outward, realizing the core-pulling action. After the core-pulling is completed, the driving medium pressure is released, and the return spring 214 immediately generates a rebound force, which drives the secondary insertion block 213 and the primary insertion block 212 to retract to their initial positions in sequence, completing the reset process.

[0020] Preferably, a liquid guiding groove 220 is formed on the surface of the inclined insertion block 210, and a liquid guiding pipe 221 is provided in the liquid guiding groove 220. The liquid guiding pipe 221 is connected to the connecting pipe 121, and the liquid guiding pipe 221 is a retractable flexible pipe. The connecting pipe 121 inside the drive rod 120 is connected to the liquid guiding pipe 221 in the liquid guiding groove 220 on the surface of the inclined insertion block 210, forming a complete driving medium conveying channel. When the hydraulic cylinder 110 is started, the driving medium flows into the liquid guiding pipe 221 through the connecting pipe 121. The liquid guiding pipe 221 accurately conveys the medium to the inside of the inclined insertion platform 211, providing power for the extension of the first-stage insertion block 212 and the second-stage insertion block 213. When the inclined insertion block 210 moves with the main insertion block 100 or is adjusted in angle, the retractable flexible liquid guiding pipe 221 can adapt to the position change of the inclined insertion block 210, always keeping the conveying channel unobstructed, and avoiding pipe breakage or medium leakage due to structural movement.

[0021] Preferably, the positioning component 300 includes: positioning grooves 310 formed on both sides of the main insert block 100; sliders 320 provided on both sides of the inclined insert block 210, and the sliders 320 are slidably connected to the positioning grooves 310; and locking bolts 330 are threadedly engaged on the sliders 320. The operation of the positioning component 300 is synchronized with the angle adjustment action of the side insertion component 200. When the angle or position of the inclined insertion block 210 of the side insertion component 200 is adjusted, the sliders 320 on both sides of the inclined insertion block 210 slide along the positioning grooves 310 on both sides of the main insertion block 100, providing guidance for the inclined insertion block 210. When the inclined insertion block 210 reaches the target position, the locking bolts 330 engaged with the threads on the slider 320 are tightened. The end of the locking bolts 330 is tightly fitted with the inner wall of the positioning groove 310, and the slider 320 is fixed in the positioning groove 310 by the thread tightening force, thereby locking the position of the inclined insertion block 210. The positioning groove 310 and the anti-slip groove 340 on the surface of the slider 320 engage with each other, further enhancing the friction between the two and preventing the slider 320 from sliding relative to each other when subjected to force.

[0022] Preferably, the connecting pipe 121 is provided with a delay pipe 122, which is arranged in an "S"-shaped bend. After the driving medium enters the connecting pipe 121 inside the drive rod 120 from the side of the hydraulic cylinder 110, it needs to flow through the "S"-shaped delay pipe 122. Because the bend structure of the delay pipe 122 increases the flow path and resistance of the medium, the speed at which the medium enters the inclined insertion platform 211 is controlled, avoiding the rapid influx of medium that would cause the first-stage insertion block 212 and the second-stage insertion block 213 to extend instantaneously. The medium flows slowly in the delay pipe 122 and gradually accumulates pressure, pushing the insertion block to extend at a steady speed, ensuring that the core pulling action is smooth and orderly.

[0023] Preferably, multiple anti-slip grooves 340 are formed on the surfaces of the positioning groove 310 and the slider 320, and the multiple anti-slip grooves 340 are equidistantly distributed among them. When the inclined block 210 of the side insertion assembly 200 is adjusted, the sliders 320 on both sides of the inclined block 210 slide along the positioning groove 310 of the main insertion block 100. The positioning groove 310 and the multiple equidistant anti-slip grooves 340 on the surface of the slider 320 engage with each other to form a concave-convex fit structure. During the sliding process of the slider 320, the anti-slip grooves 340 play an auxiliary guiding role to ensure that the slider 320 moves in a straight line. When the slider 320 reaches the target position, the locking bolt 330 is tightened. The meshing structure between the anti-slip grooves 340 further enhances the static friction between the slider 320 and the positioning groove 310, and the tightening force of the locking bolt 330 achieves double positioning and fixation.

[0024] Working principle: Angle adjustment: Based on the cavity requirements of the air-cushioned chair mold, the angle of the inclined insert 210 is adjusted by sliding the inclined insert 210 with the main insert 100. The inclined insert platform 211 on the surface of the inclined insert 210 is adapted to the angle synchronously with the inclined insert 210 to ensure that the core pulling direction requirements are met.

[0025] Positioning and fixing: After the angle of the inclined insertion block 210 is adjusted to the correct position, the sliders 320 on both sides slide along the positioning groove 310 of the main insertion block 100 to the corresponding position. Tighten the locking bolts 330 on the slider 320. The positioning groove 310 and the equidistant anti-slip grooves 340 on the surface of the slider 320 engage with each other, doubly fixing the position of the inclined insertion block 210 and the side insertion assembly 200 to prevent displacement during operation.

[0026] Start-up drive and channel construction: Start-up hydraulic cylinder 110, the linear power generated by it is transmitted to main insertion block 100 through drive rod 120, driving main insertion block 100 to complete basic directional movement; at the same time, the connecting pipe 121 inside drive rod 120 is connected to the flexible liquid guiding pipe 221 in the liquid guiding groove 220 of inclined insertion block 210 to form a complete drive medium delivery channel.

[0027] Multi-stage core-pulling action: The driving medium flows through the connecting pipe 121 and the “S”-shaped delay pipe 122 to slow down the flow rate and ensure smooth operation. Then, it is introduced into the inclined insertion platform 211 through the liquid guide pipe 221. The medium pressure overcomes the pre-tightening force of the reset spring 214 and pushes the first-stage insertion block 212 in the inclined insertion platform 211 to extend. When the pressure continues to increase, the second-stage insertion block 213 in the first-stage insertion block 212 extends synchronously, realizing multi-stage adjustment of the core-pulling length.

[0028] Reset cycle: After the core pulling is completed, the driving medium pressure is released, the reset spring 214 generates a rebound force, which drives the secondary insertion block 213 and the primary insertion block 212 to retract sequentially into the inclined insertion platform 211 and the primary insertion block 212. The inclined insertion block 210 resets with the main insertion block 100, completing one core pulling cycle. If it is necessary to change the mold or adjust the core pulling parameters, the locking bolt 330 can be loosened first and the angle adjustment steps can be repeated.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-directional core-pulling structure adapted to an air-cushioned chair mold, characterized in that, include: The main insert block (100) is provided with a hydraulic cylinder (110) at its bottom, and a drive rod (120) is connected between the hydraulic cylinder (110) and the main insert block (100). Side insertion assembly (200), the side insertion assembly (200) is disposed on both sides of the main insertion block (100), and is used for rotational adjustment to perform lateral insertion and provide multi-angle core pulling; A positioning component (300) is provided at the junction of the side insertion component (200) and the main insertion block (100) to fix the position of the side insertion component (200).

2. The multi-directional core-pulling structure adapted to an air-cushioned chair mold according to claim 1, characterized in that, The side-mounted assembly (200) includes: Sliding blocks (210) are slidably connected to both sides of the main plug (100), and the sliding blocks (210) are on the main plug (100); An inclined insertion platform (211) is provided on the surface of the inclined insertion block (210), and a first-level insertion block (212) is slidably connected inside the inclined insertion platform (211), and a second-level insertion block (213) is slidably connected inside the first-level insertion block (212). A connecting pipe (121) is opened inside the drive rod (120), and the connecting pipe (121) is connected to the interior of the inclined insertion platform (211).

3. The multi-directional core-pulling structure adapted to an air-cushioned chair mold according to claim 2, characterized in that, The positioning component (300) includes: Positioning grooves (310) are formed on both sides of the main insert (100); Slider blocks (320) are provided on both sides of the inclined insert block (210), and the sliders (320) are slidably connected to the positioning groove (310); A locking bolt (330) is threadedly engaged on the slider (320).

4. The multi-directional core-pulling structure adapted to an air-cushioned chair mold according to claim 2, characterized in that: A return spring (214) is provided in the gap between the first-level insertion block (212), the second-level insertion block (213) and the inclined insertion platform (211).

5. A multi-directional core-pulling structure adapted to an air-cushioned chair mold according to claim 2, characterized in that: The inclined insert (210) has a liquid guiding groove (220) on its surface. The liquid guiding groove (220) has a liquid guiding pipe (221) inside it. The liquid guiding pipe (221) is connected to the connecting pipe (121), and the liquid guiding pipe (221) is a retractable flexible pipe.

6. The multi-directional core-pulling structure adapted to an air-cushioned chair mold according to claim 2, characterized in that: The connecting pipe (121) is provided with a delay pipe (122) inside, and the delay pipe (122) is arranged in an "S" shaped curved structure.

7. A multi-directional core-pulling structure adapted to an air-cushioned chair mold according to claim 3, characterized in that: The positioning groove (310) and the slider (320) have multiple anti-slip grooves (340) on their surfaces, and the multiple anti-slip grooves (340) are equidistantly distributed among each other.

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