Polystyrene foam molding column adjustment assembly

Abstract

This utility model discloses a molding column adjustment assembly for polystyrene foaming, belonging to the field of polystyrene foaming molding technology. The molding column adjustment assembly for polystyrene foaming includes an upper mold assembly and a lower mold assembly. The upper mold assembly has an injection port at its top, connected to the upper mold assembly via a flange. An integrally formed injection tube is located below the injection port. Guide pillars are arranged around the bottom of the upper mold assembly. The lower mold assembly has a molding cavity at its top, and a flow divider valve is installed inside the molding cavity. To solve the problem of collision vibration between the upper and lower mold bases during the mold closing process of existing foaming molds, which leads to gaps and flash on the finished product, a spring buffer system absorbs most of the collision energy, allowing for increased mold closing speed without vibration. The parting line gap is controlled within ±0.02mm, fundamentally preventing molten material overflow.

Description

Technical Field

[0001] This utility model relates to the field of polystyrene foam molding technology, specifically to a polystyrene foam molding column adjustment assembly. Background Technology

[0002] Polystyrene foam molding is mainly used in the production of packaging materials and building insulation boards. The molding column adjustment assembly in polystyrene foam molding is a key equipment component, mainly used to support, position and adjust the upper mold (or moving mold) of the molding die. Its core function is to accurately control the mold closing height, parallelism and provide stable mold closing force.

[0003] Existing foam molding molds are subject to pressure during the mold closing process, which causes collisions and vibrations between the upper and lower mold bases. This results in gaps after mold closing and flash on the finished product. Utility Model Content

[0004] The purpose of this invention is to provide a molding column adjustment assembly for polystyrene foam. The spring buffer system absorbs most of the collision energy, which can increase the mold closing speed without generating vibration. The parting surface gap is controlled within ±0.02mm, fundamentally eliminating molten material overflow and solving the problems in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a polystyrene foam molding column adjustment assembly, including an upper mold assembly and a lower mold assembly. The top of the upper mold assembly is provided with an injection port, which is connected to the upper mold assembly via a flange. An integrally formed injection tube is provided below the injection port. Guide pillars are provided around the bottom of the upper mold assembly. A molding cavity is provided at the top of the lower mold assembly, and a flow divider valve is provided inside the molding cavity.

[0006] Preferably, the molding cavity is provided with limiting sleeves around its perimeter, and the limiting sleeves are connected to the lower mold assembly through slots. A guide sleeve is provided below the limiting sleeve.

[0007] With the above solution, the guide post is protected by the guide sleeve throughout the entire process, the lateral impact force is reduced, the risk of guide post breakage is reduced, the spring preload can be adjusted periodically to compensate for the gap caused by guide sleeve wear, and the mold overhaul cycle is extended.

[0008] Preferably, the guide post extends into the interior of the guide sleeve through a limiting sleeve, and the upper mold assembly and the lower mold assembly are fitted together, wherein the diversion valve and the injection tube are combined with each other.

[0009] The above solution ensures a soft contact connection between the injection molding tube and the diversion valve, preventing damage and deformation of the valve port, maintaining the smoothness of the inner wall of the flow channel, and reducing material degradation black spots.

[0010] Preferably, the bottom of the lower mold assembly is provided with a support, and an adjusting rod is provided above the support, wherein the adjusting rod extends through to the top of the lower mold assembly.

[0011] Preferably, a compression spring is provided between the adjusting rod and the support, and the adjusting rod is telescopically connected to the lower mold assembly through the compression spring.

[0012] Through the above solution, the spring buffer system absorbs most of the collision energy, which can increase the mold closing speed without generating vibration.

[0013] Preferably, the diversion valve is in communication with the molding cavity.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. In this utility model, the spring buffer system absorbs most of the collision energy, which can increase the mold closing speed without generating vibration. The gap of the parting surface is controlled within ±0.02mm, which fundamentally eliminates the overflow of molten material. At the same time, the soft contact docking between the injection tube and the diverter valve avoids damage and deformation of the valve port, ensures the smoothness of the inner wall of the flow channel, and reduces the black spots of material degradation.

[0016] 2. In this utility model, the guide post is protected by the guide sleeve throughout its entire length, which reduces the lateral impact force, lowers the risk of guide post breakage, and allows the spring preload to be adjusted periodically to compensate for the gap caused by guide sleeve wear, thus extending the mold overhaul cycle. Attached Figure Description

[0017] Figure 1 This is the overall front view of the present invention;

[0018] Figure 2 This is a schematic diagram of the overall cross-sectional structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the support structure of this utility model.

[0020] In the diagram: 1. Upper mold assembly; 2. Lower mold assembly; 101. Injection port; 102. Guide post; 103. Injection tube; 201. Molding cavity; 202. Support; 203. Adjusting ejector rod; 204. Diverter valve; 205. Limiting sleeve; 2031. Compression spring; 2051. Guide sleeve. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] To address the issue of existing foam molding molds experiencing collisions and vibrations between the upper and lower mold bases during mold closing due to pressure, resulting in gaps and flash on the finished product; please refer to... Figure 1-3 The present invention provides the following solution:

[0023] refer to Figure 1-2 A polystyrene foam molding column adjustment assembly includes an upper mold assembly 1 and a lower mold assembly 2. The upper mold assembly 1 has an injection port 101 at its top, which is connected to the upper mold assembly 1 via a flange. An integrally formed injection tube 103 is provided below the injection port 101. Guide posts 102 are provided around the bottom of the upper mold assembly 1. The lower mold assembly 2 has a molding cavity 201 at its top, and a flow divider valve 204 is provided inside the molding cavity 201. Limiting sleeves 205 are provided around the molding cavity 201, which are connected to the lower mold assembly 2 via slots. A guide sleeve 2051 is provided below the limiting sleeve 205, and the guide posts 102 extend into the guide sleeve 2051 through the limiting sleeve 205. The upper mold assembly 1 and the lower mold assembly 2 are fitted together, and the flow divider valve 204 is combined with the injection tube 103.

[0024] In this embodiment, as the upper mold continues to press down, the adjusting rod 203 retracts at a constant speed under the reaction of the spring, pushing the lower mold assembly 2 to rise slightly in sync. When the guide post 102 is fully embedded in the bottom of the guide sleeve 2051, the parting surfaces of the upper and lower molds gradually come into contact under the action of the spring preload. The diversion valve 204 and the injection tube 103 are precisely connected to form a leak-free flow channel. The continuous elastic force of the compression spring 2031 compensates for the thermal deformation and manufacturing tolerance of the mold, and maintains uniform force on the mold closing surface.

[0025] refer to Figure 2-3 The bottom of the lower mold assembly 2 is provided with a support 202, and an adjusting rod 203 is provided above the support 202. The adjusting rod 203 extends through to the top of the lower mold assembly 2. A compression spring 2031 is provided between the adjusting rod 203 and the support 202. The adjusting rod 203 is telescopically connected to the lower mold assembly 2 through the compression spring 2031. The flow divider valve 204 is interconnected with the molding cavity 201.

[0026] In this embodiment, when the upper mold assembly 1 moves downward, the guide post 102 first inserts into the limiting sleeve 205. The high-precision guide sleeve 2051 achieves precise axial positioning, preventing mold skewing. Just before the upper and lower molds are about to contact, with a gap of approximately 1-3 mm, the top of the adjusting push rod 203 contacts the bottom surface of the upper mold assembly 1 first. At this time, the compression spring 2031 enters a pre-compression state, generating a reverse buffer force. The elastic deformation of the spring absorbs the mechanical inertial impact, transforming rigid collisions into flexible contact. The system's kinetic energy is gradually dissipated, eliminating the instantaneous vibration caused by hard-on-hard collisions.

[0027] During the foaming process, the material expands and generates internal pressure. The pressure is transmitted to the adjusting rod 203 through the lower mold assembly 2. The compression spring 2031 further deforms, allowing the lower mold to sink slightly. This displacement adaptively releases the local pressure peak, avoiding mold cavity deformation caused by rigid mold locking. After the pressure stabilizes, the spring rebounds, ensuring that the parting surface is always in an elastic compression state.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[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 polystyrene foamed profiled column conditioning assembly, characterized by, The assembly includes an upper mold assembly (1) and a lower mold assembly (2). The upper mold assembly (1) has an injection port (101) at its top, which is connected to the upper mold assembly (1) via a flange. An integrally formed injection tube (103) is provided below the injection port (101). Guide pillars (102) are provided around the bottom of the upper mold assembly (1). The lower mold assembly (2) has a molding cavity (201) at its top, and a flow divider valve (204) is provided inside the molding cavity (201).

2. The polystyrene foam molding column adjustment assembly according to claim 1, characterized in that: The molding cavity (201) is provided with limiting sleeves (205) around its perimeter. The limiting sleeves (205) are connected to the lower mold assembly (2) through slots. A guide sleeve (2051) is provided below the limiting sleeves (205).

3. The polystyrene foam molding column adjustment assembly according to claim 2, characterized in that: The guide post (102) extends into the interior of the guide sleeve (2051) through the limiting slide sleeve (205), and the upper mold assembly (1) and the lower mold assembly (2) are fitted together, wherein the diversion valve (204) and the injection tube (103) are combined with each other.

4. The polystyrene foam molding column adjustment assembly according to claim 1, characterized in that: The bottom of the lower mold assembly (2) is provided with a support (202), and an adjusting rod (203) is provided above the support (202), wherein the adjusting rod (203) extends through to the top of the lower mold assembly (2).

5. The polystyrene foam molding column adjustment assembly according to claim 4, characterized in that: A compression spring (2031) is provided between the adjusting top rod (203) and the support (202), and the adjusting top rod (203) is telescopically connected to the lower mold assembly (2) through the compression spring (2031).

6. The polystyrene foam molding column adjustment assembly according to claim 1, characterized in that: The diversion valve (204) is in communication with the forming cavity (201).

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