Integrated forming process of composite adjustable outdoor protection table framework

Abstract

The application discloses a composite adjustable outdoor protection table framework integrated forming process, which is used for manufacturing an integrated framework integrated with stepless adjustment function and comprises the following steps: preparing an adjustable connecting piece, wherein the adjustable connecting piece is provided with a preset combination interface and is internally provided with a damping adjustment structure. Through the cooperative process design of "pre-embedded adjustable component + one-time forming", the mechanism for realizing the adjustment function is moved from the subsequent assembly process to the forming process, so that the mechanism becomes part of the forming die. After forming, the adjustable connecting piece and the framework body are fixedly connected in an integrated manner at the combination interface without gaps, so that the structural weakness existing in the traditional splicing structure is completely eliminated, and the overall strength and stability are comparable to pure integrated static components. Meanwhile, the pre-prepared adjustable connecting piece and the internal damping adjustment structure are well preserved during the forming process, and the technical bottleneck of "one-time forming and non-adjustment" is perfectly solved.

Description

Technical Field

[0001] This invention relates to the field of furniture manufacturing technology, and in particular to an integrated molding process for a composite adjustable outdoor protective table frame. Background Technology

[0002] For outdoor safety tables to meet the needs of different terrains and users, the adjustable height and angle of the tabletop are crucial.

[0003] Currently, the conventional process for achieving adjustable skeleton functionality involves first molding the individual pipes, joints, and other segmented components that make up the skeleton separately, and then assembling these segmented components into a single movable skeleton through subsequent assembly processes (such as bolt tightening and pin connections). This "segmented molding + splicing assembly" process inevitably introduces multiple splicing interfaces into the final product. Under long-term outdoor use and frequent adjustments, the stress repeatedly acts on the splicing points with limited bonding strength, which can easily lead to cracks and gaps at the splicing interfaces, thereby causing the entire skeleton to loosen, shake, or even disintegrate.

[0004] Another technological approach, namely the integrated molding process that can provide excellent structural strength, is inherently incompatible with the integration of functional modules due to its one-time molding characteristics, making it impossible to directly realize adjustable functions on the integral skeleton after molding.

[0005] Therefore, how to fundamentally break through the technical bottleneck that "integrated molding" and "adjustable function" cannot be achieved at the same time, and provide a manufacturing process that can ensure the overall structural strength of the skeleton, achieve flexible stepless adjustment, and remain stable and noiseless for long-term use, has become a key technical problem that urgently needs to be solved. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides the following technical solution: The integrated molding process for the composite adjustable outdoor protective table frame, used to manufacture an integrated frame with stepless adjustment function, includes the following steps: An adjustable connector is prepared, wherein the adjustable connector has a preset joint interface and is provided with a damping adjustment structure inside; At least one of the adjustable connectors is embedded as an insert and fixed in a preset position within the cavity of the molding die, so that the mating interface of the adjustable connector is exposed in the cavity. Molten skeleton substrate is injected into the cavity, and the skeleton substrate fills the cavity under pressure and covers the bonding interface exposed by the adjustable connector; Temperature control is applied to the molding die to solidify the skeleton substrate into a skeleton body within the cavity. During the molding process, the skeleton body forms an integrated fixed connection structure with the interface of the pre-embedded adjustable connector. The integrated frame, once formed, has an integral structure and achieves stepless adjustment of the desktop height and / or desktop angle directly through the damping adjustment structure inside the pre-embedded adjustable connector.

[0007] As an improvement to the above technical solution, in the step of "preparing adjustable connectors", the damping adjustment structure is a mechanical stepless damping structure, which is encapsulated by a shell, and the bonding interface is located on the outer surface of the shell.

[0008] As an improvement to the above technical solution, the adjustable connector is provided with a mechanical locking structure on the interface for enhancing the bonding strength with the skeleton body.

[0009] As an improvement to the above technical solution, the mechanical locking structure is a non-planar structure selected from grooves, protrusions, dovetail grooves, knurling, or combinations thereof.

[0010] As an improvement to the above technical solution, in the step of "pre-embedding and fixing it in the cavity of the molding mold", the preset position is determined by the cooperation of the preset positioning reference surface on the adjustable connector with the positioning mating surface on the molding mold.

[0011] As an improvement to the above technical solution, the skeleton substrate is a composite substrate composed of high-strength aluminum alloy and modified engineering plastic.

[0012] As an improvement to the above technical solution, after molding, the bonding strength between the skeleton body and the adjustable connector at the bonding interface is greater than the internal bonding strength of the pure skeleton body material of the same cross-sectional area.

[0013] The beneficial effects of this invention are: Through a collaborative process design of "pre-embedded adjustable components + one-time molding", the mechanism that enables adjustment is revolutionaryly moved from the post-assembly process to the molding process, making it part of the molding mold. After molding, the adjustable connector and the frame body form a seamless integrated fixed connection at the interface, completely eliminating the structural weaknesses of traditional splicing structures. Its overall strength and stability are comparable to pure integrated static components. At the same time, the pre-fabricated adjustable connector and its internal damping adjustment structure are well preserved during the molding process, perfectly solving the technical bottleneck of "one-piece molding without adjustment". By abandoning the easily loosened splicing structure, the problems of cracking and loosening are solved at the root, significantly improving the product's durability and safe lifespan; it achieves true "integrated stepless adjustment", with a smooth and quiet adjustment feel and an excellent user experience; at the same time, multiple processes are combined, simplifying the production process and improving production efficiency and automation level. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0015] Reference numerals: 100, Adjustable connector; 110, Connecting interface; 111, Mechanical locking structure; 120, Damping adjustment structure; 130, Outer shell; 140, Positioning reference surface; 200, Molding mold; 210, Cavity; 220, Positioning mating surface; 300, Skeleton base material; 400, Skeleton body. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0017] The adjustable connector 100 has a housing 130, which encapsulates a complete damping adjustment structure 120. The outer surface of the housing 130 is marked with a mating interface 110 for mating with the subsequent skeleton body 400. The mating interface 110 is machined with dovetail grooves arranged in a ring array and knurled in a crisscross pattern, forming a mechanical locking structure 111. The non-matting functional area of ​​the adjustable connector 100 is also precision machined with a flat end face, which serves as a positioning reference surface 140 for mating with the mold. The integrated molding process for the composite adjustable outdoor protective table frame includes: the steps of preparing the adjustable connector 100, the steps of pre-embedding in the mold, the steps of injecting the substrate and integral molding, and the steps of cooling and mold opening; In the step of preparing the adjustable connector 100, a mechanical processing method is used to manufacture an adjustable connector 100 with an outer metal shell 130. The connector 100 contains a complete planetary gear damping adjustment structure 120, which is filled with high-performance damping grease to provide continuous and smooth rotational resistance and maintain its posture at any angle. In order to achieve a strong bond with the subsequently formed skeleton body 400, the outer surface of the shell 130 of the adjustable connector 100 is structurally designed: it is used as the area to bond with the skeleton body 400 and is clearly defined as the bonding interface 110. On the bonding interface 110, dovetail grooves distributed in a ring array and crisscrossing knurling are machined by milling or knurling to form a mechanical locking structure 111. At the same time, a flat end face is precisely machined in the non-bonding functional area of ​​the connector 100 as the positioning reference surface 140 for its cooperation with the mold. In the pre-embedding step, the mold 200 used for injection molding is opened. The shape of the cavity 210 of the mold is consistent with the final shape of the skeleton body. At the side wall of the corresponding skeleton joint node, there is a recessed area for receiving the adjustable connector 100. The inner wall of the recessed area is the positioning mating surface 220. The prepared adjustable connector 100 is placed into the cavity 210 by a robot or manually, and its positioning reference surface 140 is tightly fitted with the positioning mating surface 220 on the mold, so that the connector 100 is uniquely and accurately fixed in the preset position. After fixing, the joint interface 110 of the adjustable connector 100 with the mechanical locking structure 111 is fully inserted into and exposed in the cavity 210, while the main body of the internally encapsulated damping adjustment structure 120 is wrapped and protected by the mold wall to prevent the subsequent high-pressure melt from intruding into its functional gap. In the substrate injection and integral molding step, the mold 200 is closed, and the molten skeleton substrate 300, which is used to form the skeleton body 400, is injected into the cavity 210 at a preset high pressure and high speed through the injection molding machine screw. The molten substrate quickly fills the entire cavity 210 and is forced into each dovetail groove and knurled pit on the interface 110 of the adjustable connector 100 under pressure, forming a tight coating at the microscopic level. During this process, the temperature of the mold is precisely controlled by the temperature control channel inside the mold 200, so that the temperature is maintained in a range that ensures good flow and rapid solidification of the skeleton substrate 300. During the solidification process, the volume of the skeleton substrate 300 shrinks slightly, which makes it generate a strong clamping force on all the concave and convex structures on the interface 110. After solidification, a nearly gapless integrated fixed connection structure is formed based on material penetration and mechanical interlocking. In the cooling and mold opening process, after the pressure holding and cooling are completed, the mold 200 is opened and the ejection mechanism ejects the formed integrated skeleton component. At this time, the skeleton body 400 has become a continuous whole, and at its joint position, it is fixed to the adjustable connector 100. From the appearance and microscopic interface observation, the materials of the two at the joint interface 110 have achieved seamless interlocking. A destructive pull-out test was conducted on the molded joint. The fracture surface was located inside the material of the frame body 400, while the joint interface 110 remained intact without separation. This indicates that the strength of the integrated fixed connection exceeds that of the base material itself. In the subsequent tens of thousands of load-bearing stepless adjustment cycle tests, the damping feel of the integrated joint remained smooth and constant throughout, without any loosening, cracking, or abnormal noise. This fully demonstrates that the process has successfully overcome the technical bottleneck of "one-piece molding and non-adjustable", and produced a protective table frame that combines overall structural strength with flexible and adjustable functions.

[0018] This process moves the adjustable mechanism from the later assembly stage to the molding stage, making it part of the molding mold. This results in a seamless integral connection between the adjustable connector 100 and the frame body 400 after molding, completely eliminating the structural weaknesses present in traditional splicing. Functionally, the prefabricated adjustable connector 100 and its internal damping adjustment structure 120 are perfectly preserved during the molding process, perfectly solving the technical bottleneck of "one-piece molding without adjustment". At the same time, merging multiple processes simplifies the production process and improves production efficiency and automation level.

[0019] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. A composite adjustable outdoor protective table frame integrated molding process, used to manufacture an integrated frame with stepless adjustment function, characterized in that... Includes the following steps: An adjustable connector (100) is prepared, the adjustable connector (100) has a preset joint interface (110) and is provided with a damping adjustment structure (120) inside. At least one of the adjustable connectors (100) is embedded and fixed in a preset position in the cavity (210) of the molding die (200) as an insert, so that the mating interface (110) of the adjustable connector (100) is exposed in the cavity (210). Molten skeleton substrate (300) is injected into the cavity (210), and the skeleton substrate (300) fills the cavity (210) under pressure and covers the bonding interface (110) exposed by the adjustable connector (100). Temperature control is applied to the molding die (200) so that the skeleton substrate (300) is solidified in the cavity (210) to form a skeleton body (400). While the skeleton body (400) is being formed, it forms an integrated fixed connection structure with the interface (110) of the pre-embedded adjustable connector (100). Among them, the integrated frame after molding, the frame body (400) is an integral structure, and the stepless adjustment function of the desktop height and / or desktop angle is realized directly through the damping adjustment structure (120) inside the pre-embedded adjustable connector (100).

2. The integrated molding process for the composite adjustable outdoor protective table frame according to claim 1, characterized in that: In the step of "preparing the adjustable connector (100)", the damping adjustment structure (120) is a mechanical stepless damping structure, which is encapsulated by the shell (130), and the bonding interface (110) is located on the outer surface of the shell (130).

3. The integrated molding process for the composite adjustable outdoor protective table frame according to claim 2, characterized in that: The adjustable connector (100) is provided with a mechanical locking structure (111) on the joint interface (110) for enhancing the joint strength with the skeleton body (400).

4. The integrated molding process for the composite adjustable outdoor protective table frame according to claim 3, characterized in that: The mechanical locking structure (111) is a non-planar structure selected from grooves, protrusions, dovetail grooves, knurling, or combinations thereof.

5. The integrated molding process for the composite adjustable outdoor protective table frame according to claim 1, characterized in that: In the step of "pre-embedding and fixing in the cavity (210) of the molding mold (200)," the preset position is determined by the cooperation between the preset positioning reference surface (140) on the adjustable connector (100) and the positioning mating surface (220) on the molding mold (200).

6. The integrated molding process for the composite adjustable outdoor protective table frame according to claim 1, characterized in that: The skeleton substrate (300) is a composite substrate composed of high-strength aluminum alloy and modified engineering plastic.

7. The integrated molding process for the composite adjustable outdoor protective table frame according to any one of claims 1 to 6, characterized in that: After molding, the bonding strength between the skeleton body (400) and the adjustable connector (100) at the bonding interface (110) is greater than the internal bonding strength of the pure skeleton body (400) material with the same cross-sectional area.

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