Three-piece type EPS foam automatic forming machine
By linking the high-precision linear guide rail assembly and the mold moving drive device of the three-piece EPS foam automatic molding machine, the problems of long production cycle and excessive manual intervention of traditional foam molding machines are solved, achieving high-efficiency production and stable product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG TIANWU JINBAI PACKAGING PRODUCTS CO LTD
- Filing Date
- 2025-05-20
- Publication Date
- 2026-04-28
AI Technical Summary
Traditional foam molding machines have long production cycles, require a lot of manual intervention, have difficulty guaranteeing mold closing accuracy, are prone to product damage, have low space utilization, and cannot achieve linkage between mold closing and demolding.
The three-piece EPS foam automatic molding machine utilizes a high-precision linear guide rail assembly and a mold moving drive device to achieve synchronous control of the moving mold and the fixed mold. Combined with a feeding device and steam pipeline, it achieves efficient linkage of mold closing, foaming, and demolding.
It achieves a highly efficient linkage mechanism of "ejection upon mold opening", shortens the production cycle, improves production efficiency, ensures product quality consistency, reduces manual intervention, and improves space utilization.
Smart Images
Figure CN224170297U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of foam molding machine technology, and more specifically, to a three-piece EPS foam automatic molding machine. Background Technology
[0002] Foam molding machines are equipment used to produce foam materials, widely used in packaging, insulation, construction, and other fields. EPS (expanded polystyrene) is made from polystyrene. EPS production involves preheating polystyrene granules and a foaming agent with steam to expand them, followed by curing and a second heating process to fuse them into shape. However, traditional foam molding machines require separate steps for mold closing, material injection, and demolding, involving significant manual intervention and hindering coordinated operation. This results in long production cycles. Demolding often requires manual assistance for ejection or removal, leading to low efficiency and potential product damage due to improper operation. Furthermore, traditional foam molding machines are bulky, requiring considerable space to move the mold frames, resulting in low space utilization. Manual adjustment of the mold closing position makes it difficult to guarantee mold closing accuracy, affecting product quality consistency. Utility Model Content
[0003] The purpose of this invention is to overcome the above-mentioned defects in the prior art and provide a three-piece EPS foam automatic molding machine that can realize the linkage mechanism of "ejection upon mold opening", shorten the production cycle, eliminate the need for manual intervention, and achieve high production efficiency.
[0004] To achieve the above objectives, this utility model provides a three-piece EPS foam automatic molding machine, including a frame, a fixed mold, a movable mold, a demolding frame, a linear guide rail assembly, a mold moving drive device, and a feeding device. The fixed mold is vertically fixedly connected to the top of the frame. The movable mold and the demolding frame are slidably connected to the front and rear of the fixed mold respectively via linear guide rail assemblies fixedly connected to both sides of the fixed mold, and are both parallel to the fixed mold. The mold moving drive device is fixedly installed on the fixed mold. The output part of the mold moving drive device is connected to the movable mold for transmission and to the demolding frame via the linear guide rail assembly. The frame is driven by a transmission mechanism. The mold moving drive device can simultaneously drive the moving mold and the demolding frame to move back and forth on the linear guide rail assembly. Several feeding devices are provided, each fixedly mounted on the frame and located above the fixed mold. They are connected to the feed port of the fixed mold through a feeding pipe. The mold moving drive device can drive the moving mold to move closer to the fixed mold until it docks with the fixed mold to achieve clamping and mold closing. When the mold is opened, the mold moving drive device can drive the moving mold to move away from the fixed mold and simultaneously drive the demolding frame to move closer to the fixed mold until it docks with the fixed mold to achieve ejection and demolding.
[0005] Preferably, the system also includes a fixed mold steam pipe and a moving mold steam pipe, wherein the fixed mold steam pipe is horizontally installed on the top of the fixed mold and connected to the forming cavity of the fixed mold, and the moving mold steam pipe is horizontally installed on the top of the moving mold and connected to the forming cavity of the moving mold.
[0006] Preferably, the linear guide assembly includes slide rods and connecting rods. Several slide rods are provided, with one end of each slide rod arranged parallel to each other in the horizontal direction and fixedly connected to both sides of the fixed mold. Slide sleeves are fixedly connected to both sides of the moving mold, and the moving mold is slidably connected to the slide rods via the slide sleeves. Four connecting rods are provided, with one end fixedly connected to the upper and lower sides of the front of the moving mold. The other end of each connecting rod passes through the upper and lower sides of the fixed mold. The upper and lower sides of the demolding frame are locked to the end of the connecting rod extending out of the fixed mold via locking fasteners.
[0007] Preferably, the movable mold is fixedly provided with positioning posts on both sides facing the fixed mold, and the fixed mold is fixedly provided with positioning sleeves for the positioning posts to be inserted on both sides corresponding to the positioning posts on both sides of the movable mold.
[0008] Preferably, the mold moving drive device includes four linear drive cylinders, which are respectively fixedly arranged on the upper and lower sides of the fixed mold, and the output shafts of the linear drive cylinders are respectively connected to the upper and lower sides of the moving mold.
[0009] Preferably, the feeding devices are all configured as intermittent quantitative feeding tanks.
[0010] Preferably, the assembly also includes a lifting beam frame, which is vertically mounted above the fixed mold via a support frame fixed above the fixed mold and the machine frame. A slide rail slider assembly is fixedly connected to the bottom surface of the lifting beam frame, and the top of the demolding frame is slidably connected to the slide rail slider assembly via a connecting plate.
[0011] Preferably, the system also includes two drainage pipes, each connected to the fixed mold and the movable mold respectively, and located on top of the fixed mold and the movable mold.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0013] This utility model features a novel structure and a reasonable design. By employing a high-precision linear guide assembly in conjunction with a mold-moving drive device, the mold-moving drive device can synchronously control the clamping and closing of the moving mold and the ejection and demolding of the demolding frame. This ensures tight mold closing and smooth demolding. It has a high degree of automation and realizes a highly efficient linkage mechanism of "ejection upon mold opening," which greatly shortens the production cycle, eliminates the need for manual intervention, improves production efficiency, and ensures the consistency and stability of product quality. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is a schematic diagram of the structure of the three-piece EPS foam automatic molding machine provided in this embodiment of the utility model. Figure 1 ;
[0016] Figure 2 This is a schematic diagram of the fixed mold, moving mold, and demolding frame of the three-piece EPS foam automatic molding machine provided in this embodiment of the utility model;
[0017] Figure 3 This is a partially enlarged schematic diagram of the three-piece EPS foam automatic molding machine provided in this embodiment of the utility model;
[0018] Figure 4 This is a schematic diagram of the structure of the three-piece EPS foam automatic molding machine provided in this embodiment of the utility model. Figure 2 . Detailed Implementation
[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0020] Please refer to Figure 1 The present invention provides a three-piece EPS foam automatic molding machine, including a frame 1, a fixed mold 2, a movable mold 3, a demolding frame 4, a linear guide rail assembly 5, a mold moving drive device 6, and a feeding device 7. The components of this embodiment will be described in detail below with reference to the accompanying drawings.
[0021] like Figure 1As shown, the fixed mold 2 can be vertically fixedly connected to the top of the frame 1. The movable mold 3 and the demolding frame 4 are slidably connected to the front and rear of the fixed mold 2 respectively through the linear guide rail assemblies 5 fixedly connected to both sides of the fixed mold 2, and are both arranged parallel to the fixed mold 2. The mold moving drive device 6 is fixedly installed on the fixed mold 2. The output part of the mold moving drive device 6 is connected to the movable mold 3 and to the demolding frame 4 through the linear guide rail assembly 5. The mold moving drive device 6 can simultaneously drive the movable mold 3 and the demolding frame 4 to move back and forth on the linear guide rail assembly 5. Several feeding devices 7 are provided. Several feeding devices 7 are fixedly installed on the frame 1 and located above the fixed mold 2 and are connected to the feed port of the fixed mold 2 through the feeding pipe.
[0022] In order to quantitatively control and ensure product consistency, the feeding device 7 can be preferably set as an intermittent quantitative feeding tank. The intermittent design is adapted to the periodic production process and works in sync with processes such as mold closing and foaming to ensure product density and dimensional stability.
[0023] like Figure 2 As shown, positioning pins 32 facing the fixed mold 2 can be fixedly provided on both sides of the movable mold 3. Positioning sleeves 21 for the positioning pins to be inserted are fixedly provided on both sides of the fixed mold 2 corresponding to the positioning pins 32 on both sides of the movable mold 3, which can ensure the precise alignment of the movable mold 3 and the fixed mold 2 when the mold is closed.
[0024] In specific implementation, the mold moving drive device 6 can drive the moving mold 3 to move towards the fixed mold 2 until it docks with the fixed mold 2, so that the positioning pins 32 on both sides of the moving mold 3 can be inserted into the positioning sleeves 21 on both sides of the fixed mold 2 and then move forward to achieve clamping and mold closing. When the mold is opened, the mold moving drive device 6 can drive the moving mold 3 to move away from the fixed mold 2 and at the same time drive the demolding frame 4 to move towards the fixed mold 2 until it docks with the fixed mold 2 to achieve ejection and demolding.
[0025] In this embodiment, a fixed mold steam pipe 81 and a moving mold steam pipe 82 are also included. The fixed mold steam pipe 81 can be horizontally installed on the top of the fixed mold 2 and connected to the molding cavity of the fixed mold 2. The moving mold steam pipe 82 can be horizontally installed on the top of the moving mold 3 and connected to the molding cavity of the moving mold 3.
[0026] Among them, the fixed mold 2 is a mold fixedly set on the frame 1, which cooperates with the movable mold 3 to form a molding cavity for containing EPS raw materials and molding. The steam system is connected through the fixed mold steam pipe 81 to heat and foam the raw materials inside the cavity. The movable mold 3 and the fixed mold 2 are engaged to form a closed cavity. The steam system is connected through the movable mold steam pipe 82 to assist in heating and foaming, forming a double steam pipe for uniform heating, ensuring that the raw materials foam quickly and have a consistent density.
[0027] like Figure 3As shown, specifically, the linear guide assembly 5 may include a slide rod 51 and a connecting rod 52. The slide rod 51 has several pieces, and one end of each slide rod 51 is arranged in parallel in the horizontal direction and fixedly connected to both sides of the fixed mold 2. The movable mold 3 has a sliding sleeve 31 fixedly connected to both sides. The movable mold 3 is slidably connected to the slide rod 51 through the sliding sleeve 31.
[0028] Furthermore, four linkage rods 52 can be provided, with one end of each rod fixedly connected to the upper and lower sides of the front of the movable mold 3. The other end of the linkage rod 52 passes through the upper and lower sides of the fixed mold 2. The upper and lower sides of the demolding frame 4 are locked to the end of the linkage rod 52 extending out of the fixed mold 2 by fasteners (support blocks + bolts).
[0029] Preferably, it may also include a lifting beam frame 11, which is vertically set above the fixed mold 2 by a support frame fixed above the fixed mold 2 and the frame 1. A slide rail slider assembly is fixedly connected to the bottom surface of the lifting beam frame 11, and the top of the demolding frame 4 is slidably connected to the slide rail slider assembly through a connecting plate 41.
[0030] The slide rail and slider assembly of the lifting beam 11 provides vertical support and horizontal sliding guidance to prevent tilting during ejection and ensure complete demolding of the product.
[0031] In practice, the slide bar 51 provides a sliding track for the moving mold 3 to ensure its smooth movement in the horizontal direction. The connecting rod 52 connects the moving mold 3 and the demolding frame 4, transmitting driving force so that when the moving mold 3 moves backward, the demolding frame 4 moves forward and the top plate (or ejector pin) set inside its front side contacts the product, pushing the product out of the cavity of the fixed mold 2, thus achieving automatic demolding. The moving mold drive device 6 drives the movement of the moving mold 3 to drive the demolding frame 4 in the opposite direction, eliminating the need for an additional power device and improving demolding efficiency.
[0032] like Figure 4 As shown, the mold moving drive device 6 may include four linear drive cylinders 61, which are fixedly mounted on the upper and lower sides of the fixed mold 2, respectively. The output shafts of the linear drive cylinders 61 are respectively connected to the upper and lower sides of the moving mold 3. The four linear drive cylinders 61 provide balanced thrust, prevent mold displacement, and can synchronously drive the moving mold and the demolding frame, reducing action time and greatly improving production efficiency.
[0033] Furthermore, it may also include a drainage pipe 9 for draining condensate generated during the cooling process of the solid mold 2 and the movable mold 3. The drainage pipe 9 has two pipes, each connected to the solid mold 2 and the movable mold 3 respectively and located on top of the solid mold 2 and the movable mold 3, which can reduce cooling time and shorten the production cycle.
[0034] The working principle of this embodiment is as follows:
[0035] First, according to the product specifications, install three matching fixed molds 2, movable molds 3, and demolding frames 4. Adjust and fix the positions of each mold to ensure that each mold is tightly closed and accurately positioned. Start the equipment, and use four linear drive cylinders 61 to push the movable mold 3 along the slide bar 51 towards the fixed mold 2 until it is tightly closed with the fixed mold 2 to form a closed cavity. The intermittent quantitative feeding tank injects EPS raw materials into the feed port of the fixed mold 2 through the feeding pipe to ensure that the raw materials are evenly distributed in the cavity. Set the heating temperature according to the product process and start the steam heating system. Steam is introduced through the fixed mold steam pipe 81 and the moving mold steam pipe 82. The raw material is heated, foamed, and expanded to fill the mold cavity. After foaming, the moving mold drive device 6 maintains the mold closing pressure, and the equipment automatically maintains pressure to stabilize the product shape. Then, water cooling is performed to cool to a suitable temperature to solidify the product shape. The condensate is then discharged through the drain pipe 9. Subsequently, four linear drive cylinders 61 drive the moving mold 3 to retract and open the mold. At the same time, the connecting rod 52 pulls the demolding frame 4 forward to push the product out of the fixed mold 2, thus achieving demolding.
[0036] In summary, this utility model, by employing a high-precision linear guide assembly in conjunction with a mold-moving drive device, enables the mold-moving drive device to synchronously control the clamping and closing of the moving mold and the ejection and demolding of the demolding frame. This ensures tight mold closing and smooth demolding, and its high degree of automation achieves a highly efficient linkage mechanism of "ejection upon mold opening," shortening the production cycle, eliminating the need for manual intervention, improving production efficiency, and ensuring the consistency and stability of product quality.
[0037] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.
Claims
1. A three-piece EPS foam automatic molding machine, characterized in that: The system includes a frame, a fixed mold, a movable mold, a demolding frame, a linear guide rail assembly, a mold-moving drive device, and a feeding device. The fixed mold is vertically fixedly connected to the top of the frame. The movable mold and the demolding frame are slidably connected to the front and rear of the fixed mold respectively via linear guide rail assemblies fixedly connected to both sides of the fixed mold, and are both parallel to the fixed mold. The mold-moving drive device is fixedly mounted on the fixed mold. The output part of the mold-moving drive device is connected to the movable mold for transmission and to the demolding frame for transmission through the linear guide rail assembly. The mold-moving drive device is capable of... Simultaneously, the moving mold and the demolding frame move back and forth on the linear guide assembly. Several feeding devices are provided, each fixedly mounted on the frame and located above the fixed mold, and connected to the feed port of the fixed mold through a feeding pipe. The moving mold drive device can drive the moving mold to move closer to the fixed mold until it docks with the fixed mold to achieve clamping and mold closing. When the mold is opened, the moving mold drive device can drive the moving mold to move away from the fixed mold and simultaneously drive the demolding frame to move closer to the fixed mold until it docks with the fixed mold to achieve ejection and demolding.
2. The three-piece EPS foam automatic molding machine according to claim 1, characterized in that: It also includes a fixed mold steam pipe and a moving mold steam pipe. The fixed mold steam pipe is horizontally installed on the top of the fixed mold and connected to the forming cavity of the fixed mold. The moving mold steam pipe is horizontally installed on the top of the moving mold and connected to the forming cavity of the moving mold.
3. The three-piece EPS foam automatic molding machine according to claim 1, characterized in that: The linear guide assembly includes slide rods and connecting rods. Several slide rods are provided, with one end of each slide rod arranged parallel to each other in the horizontal direction and fixedly connected to both sides of the fixed mold. Slide sleeves are fixedly connected to both sides of the moving mold, and the moving mold is slidably connected to the slide rods via the slide sleeves. Four connecting rods are provided, with one end fixedly connected to the upper and lower sides of the front of the moving mold. The other end of each connecting rod passes through the upper and lower sides of the fixed mold. The upper and lower sides of the demolding frame are locked to the ends of the connecting rods extending out of the fixed mold via fasteners.
4. The three-piece EPS foam automatic molding machine according to claim 1, characterized in that: The movable mold is fixedly provided with positioning posts on both sides facing the fixed mold, and the fixed mold is fixedly provided with positioning sleeves for the positioning posts to be inserted on both sides corresponding to the positioning posts on both sides of the movable mold.
5. The three-piece EPS foam automatic molding machine according to claim 1, characterized in that: The mold moving drive device includes four linear drive cylinders, which are fixedly installed on the upper and lower sides of the fixed mold, and the output shafts of the linear drive cylinders are respectively connected to the upper and lower sides of the moving mold.
6. The three-piece EPS foam automatic molding machine according to claim 1, characterized in that: All feeding devices are configured as intermittent quantitative feeding tanks.
7. The three-piece EPS foam automatic molding machine according to claim 1, characterized in that: It also includes a lifting beam frame, which is vertically installed above the fixed mold via a support frame fixed above the fixed mold and the machine frame. A slide rail slider assembly is fixedly connected to the bottom surface of the lifting beam frame, and the top of the demolding frame is slidably connected to the slide rail slider assembly via a connecting plate.
8. The three-piece EPS foam automatic molding machine according to claim 1, characterized in that: It also includes drainage pipes, which are provided in two sections and are respectively connected to the fixed mold and the moving mold and are located on top of the fixed mold and the moving mold.