A fully automatic EPP forming machine

By using the linkage structure of the worm gear screw drive screw shaft and sliding rod frame, combined with the guiding design of double-headed gear rod and gear rack, the problem of unstable mold closing movement of EPP molding machine is solved, realizing precise mold positioning and stable processing, and avoiding the generation of overflow and burrs in the mold gap.

CN224545154UActive Publication Date: 2026-07-24GUANGDONG FUMEI NEW MATERIALS TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
GUANGDONG FUMEI NEW MATERIALS TECHNOLOGY CO LTD
Filing Date
2025-06-20
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

The existing EPP molding machine has poor stability during the mold closing and movement process, resulting in low mold closing accuracy, easy burrs during mold forming, and difficulty in achieving precise alignment.

Method used

The worm gear screw drive is used to move the mold closing template back and forth. Combined with the linkage structure of the sliding rod frame and the movable rod, the mold closing template is accurately positioned through threaded transmission. The movement stability is improved by the cooperation of the double-headed gear rod and the gear rack.

Benefits of technology

It achieves precise positioning and stable movement of the mold closing template, ensuring the stability and accuracy of the EPP mold processing, and avoiding overflow and burrs in the mold gap.

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Abstract

The utility model relates to EPP forming machine technical field especially relates to a full -automatic EPP forming machine, including the forming frame still including feeding subassembly, cooling sprayer, the upper end of forming frame is provided with feeding subassembly, the front of feeding subassembly is provided with cooling sprayer, the utility model discloses the worm screw machine drive screw rod axle rotation and utilize screw rod before and after removal adjustment, in the screw rod axle before and after removal process drive the whole before and after removal of the closing mould template and sliding rod frame, movable rod, thereby realize the closing mould template and the processing frame between the closing mould and the separation function, thereby realize the setting processing and the disassembly separation function of EPP mould in the closing mould template, cooperate the sliding adjustment auxiliary structure of sliding rod frame and movable rod, make the movement and the positioning of closing mould template more accurate.
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Description

Technical Field

[0001] This utility model relates to the field of EPP molding machine technology, and in particular to a fully automatic EPP molding machine. Background Technology

[0002] EPP (expanded polypropylene) is a high-performance, highly crystalline polymer-gas composite material. Due to its excellent shock absorption, high deformation recovery rate, good heat resistance, chemical resistance, oil resistance, thermal insulation, and light weight, it is widely used in many fields, such as electronic product packaging, automobile bumpers and shock-absorbing cores, and sports shoe soles.

[0003] Mold closing and movement is a crucial part of molding machine operation. Precise control of the relative position and movement trajectory of the moving mold and the fixed mold is required to achieve tight fitting and efficient production. However, many factors make it difficult to guarantee the stability of this process. Some molding machines have defects in their mechanical structure design, such as insufficient precision of the mold closing guide device and wear of the guide rail after long-term use, which makes the moving mold prone to deviation and shaking during movement. In addition, unstable pressure in the hydraulic drive system can also cause uneven movement speed of the moving mold, further aggravating stability problems. Poor mold closing and movement stability will lead to reduced mold closing accuracy. When the moving mold deviates or shakes during movement, it is difficult for the molds to be precisely aligned during mold closing, and an ideal sealed cavity cannot be formed. During injection molding, this will cause molten EPP material to overflow from the mold gap, forming burrs on the edge of the product. Utility Model Content

[0004] In order to overcome the problems of poor stability during the mold closing and movement of existing EPP molding machines, which result in low mold closing accuracy and easy burrs in the mold forming process, this utility model provides a fully automatic EPP molding machine.

[0005] The technical solution is as follows: A fully automatic EPP molding machine includes a molding frame, a feeding component, and a cooling sprayer; the feeding component is provided at the upper end of the molding frame; a cooling sprayer is provided in front of the feeding component; the molding frame includes a processing frame, a mold closing template, a movable rod, a worm gear screw, a lead screw shaft, a sliding rod frame, a double-headed gear rod, and a gear rack.

[0006] Furthermore, the processing frame is equipped with a mold closing template inside; worm gear screw machines are installed on both sides of the front end of the processing frame, and the housing of the worm gear screw machines is fixedly connected to the processing frame.

[0007] Furthermore, the worm gear screw machine has a screw shaft inside, and the rear end of the screw shaft is rotatably connected to the mold closing template. The worm gear screw machine is also designed to drive the screw shaft to move back and forth via a threaded drive.

[0008] Furthermore, a sliding rod frame is provided at the front end of the lead screw shaft, and the sliding rod frame is rotatably connected to the front end of the lead screw shaft, and the rear end of the sliding rod frame is fixedly connected to the mold closing template.

[0009] Furthermore, a movable rod is provided at the rear end of the mold closing template, and the front end of the movable rod is fixedly connected to the mold closing template, and the rear end of the movable rod passes through the limiting hole at the rear end of the processing frame.

[0010] Furthermore, a double-headed gear rod is provided at the upper rear end of the mold closing template, and the double-headed gear rod is rotatably connected to the outer shell of the mold closing template.

[0011] Furthermore, gear racks are provided above both ends of the double-ended gear rod, and the gear racks are fixedly connected to the processing frame, and there is a gear connection between the double-ended gear rod and the gear racks.

[0012] The beneficial effects are as follows: The EPP molding machine of this utility model achieves core motion control through a worm gear screw mechanism. After the worm gear screw mechanism is powered on, it drives the screw shaft to rotate. Based on the principle of screw transmission, the screw shaft moves back and forth along the axial direction. During the movement of the screw shaft, the mold closing template connected to it moves synchronously. At the same time, the sliding rod and the movable rod also move back and forth as a whole with the mold closing template. This linkage mechanism allows the mold closing template to move closer to or further away from the processing frame to complete the mold closing and separation operations. When the mold closing template moves to fit with the processing frame, forming a closed space, the EPP mold can be shaped and processed within the mold closing template. When the shaping and processing are completed, the worm gear screw mechanism drives the screw shaft to move in the opposite direction, and the mold closing template separates from the processing frame, facilitating mold disassembly. The sliding rod and the movable rod constitute a sliding adjustment auxiliary structure. When the mold closing template moves, the sliding rod slides along the set track, and the movable rod plays a supporting and guiding role. The two work together to ensure that the mold closing template moves along the predetermined path, achieving precise positioning and ensuring the stability and accuracy of the EPP mold processing and disassembly process.

[0013] By setting up a double-headed gear rod and gear rack, the double-headed gear rod moves back and forth along the gear rack when the mold closing template moves back and forth. Due to the auxiliary guiding structure of the gear rack, the movement stability of the mold closing template is further improved. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0015] Figure 2 This is a side view of the overall three-dimensional structure of the present invention;

[0016] Figure 3 This is a side view of the three-dimensional structure of the molding frame of this utility model;

[0017] Figure 4 This is a rear three-dimensional structural diagram of the molding frame of this utility model;

[0018] Figure 5 This is a rear-view, three-dimensional structural diagram of the molding frame of this utility model.

[0019] In the attached diagram, the following are the reference numerals: 1. Molding frame; 2. Feeding assembly; 3. Cooling sprayer; 101. Processing frame; 102. Mold closing template; 103. Movable rod; 104. Worm gear screw mechanism; 105. Screw shaft; 106. Sliding rod frame; 107. Double-headed gear rod; 108. Gear rack. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0021] Example 1

[0022] like Figures 1-5 As shown, a fully automatic EPP molding machine includes a molding frame 1, a feeding component 2, and a cooling sprayer 3; the feeding component 2 is provided at the upper end of the molding frame 1; the cooling sprayer 3 is provided in front of the feeding component 2; the molding frame 1 includes a processing frame 101, a mold closing template 102, a movable rod 103, a worm gear screw mechanism 104, a screw shaft 105, a sliding rod frame 106, a double-headed gear rod 107, and a gear rack 108.

[0023] The processing frame 101 is equipped with a mold closing template 102 inside; worm gear screw machines 104 are provided on both sides of the front end of the processing frame 101, and the housing of the worm gear screw machine 104 is fixedly connected to the processing frame 101.

[0024] The worm gear screw machine 104 has a screw shaft 105 inside, and the rear end of the screw shaft 105 is rotatably connected to the mold closing template 102. The worm gear screw machine 104 drives the screw shaft 105 to move back and forth via a thread.

[0025] The front end of the lead screw shaft 105 is provided with a sliding rod bracket 106, and the sliding rod bracket 106 is rotatably connected to the front end of the lead screw shaft 105, and the rear end of the sliding rod bracket 106 is fixedly connected to the mold closing template 102.

[0026] The EPP molding machine achieves core motion control through a worm gear screw mechanism 104. When the worm gear screw mechanism 104 is powered on, it drives the screw shaft 105 to rotate. Based on the principle of threaded transmission, the screw shaft 105 moves back and forth axially. During the movement of the screw shaft 105, the mold closing template 102 connected to it moves synchronously. Simultaneously, the sliding rod frame 106 and the movable rod 103 also move back and forth as a whole, following the mold closing template 102. This linkage mechanism allows the mold closing template 102 to move closer to or further away from the processing frame 101, completing the mold closing and separation operations. When the mold closing template 102 moves to be in contact with the processing frame 101... This forms a closed space, where the EPP mold can be shaped within the mold closing template 102. Once the shaping is complete, the worm gear screw mechanism 104 drives the screw shaft 105 to move in the opposite direction, separating the mold closing template 102 from the processing frame 101 for easy mold disassembly. The sliding rod frame 106 and the movable rod 103 form a sliding adjustment auxiliary structure. When the mold closing template 102 moves, the sliding rod frame 106 slides along a set track, while the movable rod 103 provides support and guidance. The two work together to ensure that the mold closing template 102 moves along a predetermined path, achieving precise positioning and ensuring the stability and accuracy of the EPP mold processing and disassembly process.

[0027] Example 2

[0028] Based on Example 1, such as Figures 1-5 As shown, a movable rod 103 is provided at the rear end of the mold closing template 102, and the front end of the movable rod 103 is fixedly connected to the mold closing template 102, and the rear end of the movable rod 103 passes through the limiting hole at the rear end of the processing frame 101.

[0029] A double-headed gear rod 107 is provided at the upper rear end of the mold closing template 102, and the double-headed gear rod 107 is rotatably connected to the outer shell of the mold closing template 102.

[0030] A gear rack 108 is provided above both ends of the double-ended gear rod 107, and the gear rack 108 is fixedly connected to the processing frame 101, and there is a gear connection between the double-ended gear rod 107 and the gear rack 108.

[0031] With the arrangement of the double-headed gear rod 107 and the gear rack 108, when the mold closing template 102 moves back and forth, the double-headed gear rod 107 moves back and forth along the gear rack 108. Due to the auxiliary guiding structure of the gear rack 108, the movement stability of the mold closing template 102 is further improved.

Claims

1. A fully automatic EPP molding machine, comprising a molding frame (1), characterized in that: It also includes a feeding assembly (2) and a cooling sprayer (3); the upper end of the molding frame (1) is provided with a feeding assembly (2); the front of the feeding assembly (2) is provided with a cooling sprayer (3); the molding frame (1) includes a processing frame (101), a mold closing template (102), a movable rod (103), a worm gear screw machine (104), a screw shaft (105), a sliding rod frame (106), a double-headed gear rod (107), and a gear rack (108).

2. The fully automatic EPP molding machine according to claim 1, characterized in that: The processing frame (101) is equipped with a mold closing template (102) inside; worm gear screw machines (104) are provided on both sides of the front end of the processing frame (101), and the housing of the worm gear screw machine (104) is fixedly connected to the processing frame (101).

3. The fully automatic EPP molding machine according to claim 2, characterized in that: The worm gear screw machine (104) has a screw shaft (105) inside, and the rear end of the screw shaft (105) is rotatably connected to the mold closing template (102). The worm gear screw machine (104) drives the screw shaft (105) to move back and forth.

4. The fully automatic EPP molding machine according to claim 3, characterized in that: The front end of the lead screw shaft (105) is provided with a sliding rod frame (106), and the sliding rod frame (106) is rotatably connected to the front end of the lead screw shaft (105), and the rear end of the sliding rod frame (106) is fixedly connected to the mold closing template (102).

5. The fully automatic EPP molding machine according to claim 2, characterized in that: The rear end of the mold closing template (102) is provided with a movable rod (103), and the front end of the movable rod (103) is fixedly connected to the mold closing template (102), and the rear end of the movable rod (103) passes through the limiting hole at the rear end of the processing frame (101).

6. The fully automatic EPP molding machine according to claim 2, characterized in that: A double-headed gear rod (107) is provided at the upper rear end of the mold closing template (102), and the double-headed gear rod (107) is rotatably connected to the outer shell of the mold closing template (102).

7. A fully automatic EPP molding machine according to claim 6, characterized in that: A gear rack (108) is provided above both ends of the double-headed gear rod (107), and the gear rack (108) is fixedly connected to the processing frame (101), and there is a gear connection between the double-headed gear rod (107) and the gear rack (108).