Heating equipment for foaming forming of shoe sole
By incorporating an embedded heating element and a servo motor-driven rotating mixing paddle, along with an electric telescopic rod lifting design, the problems of uneven heating and material adhesion are solved, achieving all-around mixing and efficient cleaning, thus improving the quality and production efficiency of shoe sole foam molding.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUJIAN WENHUA SHOES MATERIAL CO LTD
- Filing Date
- 2025-05-31
- Publication Date
- 2026-05-01
AI Technical Summary
Existing shoe sole foaming molding equipment suffers from uneven heating and easy adhesion of foaming materials, affecting shoe sole quality and increasing cleaning difficulty.
The system employs an embedded heating element for heating, combined with a servo motor-driven rotating agitator and an electric telescopic rod to raise and lower the agitator. This, along with a ring scraper to remove material from the inner wall, achieves comprehensive mixing and prevents material adhesion.
It improves heating uniformity and stirring efficiency, avoids the adhesion of foaming material to the inner wall of the equipment, and ensures the quality of shoe sole foaming and production efficiency.
Smart Images

Figure CN224183548U_ABST
Abstract
Description
A heating device for foam molding of shoe soles Technical Field
[0001] This utility model relates to the technical field of heating equipment for shoe sole manufacturing, and in particular to a heating equipment for shoe sole foaming molding. Background Technology
[0002] In the footwear manufacturing industry, sole foaming is a crucial process that directly impacts the comfort, durability, and overall quality of the sole. During foaming, the heating and mixing of the foaming material are essential steps to ensure product performance. Traditional sole foaming heating equipment, such as the device described in publication number CN217670676U, while achieving heating and mixing of the foaming material to some extent, still has some shortcomings.
[0003] Specifically, the heating equipment in this prior art mainly relies on fixed stirring components to stir the foaming material. This stirring method often makes it difficult to achieve all-round stirring of the foaming material, resulting in uneven heating and thus affecting the quality of the shoe sole foaming. In addition, because the stirring components are in a fixed position, after long-term use, the foaming material tends to adhere to the inner wall of the equipment, which is not only difficult to clean but may also affect the quality of shoe soles produced subsequently. Summary of the Invention
[0004] The purpose of this invention is to provide a heating device for foam molding of shoe soles. The device heats the foam material through a heating tube embedded in the inner wall of the heating shell. A servo motor drives the active and driven gears to mesh, causing the stirring paddle to rotate for shearing and mixing. Simultaneously, an electric telescopic rod raises and lowers the machine shell and stirring paddle, achieving comprehensive mixing of the foam material and improving heating uniformity. Furthermore, when the machine shell is raised and lowered, the mounting ring and annular scraper at the bottom of the connecting rod scrape away material from the inner wall of the heating shell, effectively preventing foam material adhesion and ensuring production quality.
[0005] To achieve the above objectives, the main technical solutions adopted by this utility model include:
[0006] A heating device for foam molding of shoe soles, comprising:
[0007] The heating shell and the heating tube embedded in the heating shell are provided. A liftable stirring component is installed on the top of the heating shell. Drive components for driving the stirring component to move up and down are installed on both sides of the heating shell and at the positions corresponding to the stirring component.
[0008] The heating equipment described above for foam molding of shoe soles includes a feed pipe installed on the top of the side of the heating shell and a discharge pipe installed on the bottom of the heating shell.
[0009] The heating device for foam molding of shoe soles described above has a flow guide plate installed at the bottom of the inner wall of the heating shell and at the position corresponding to the discharge pipe.
[0010] The heating equipment for foam molding of shoe soles described above includes a lifting housing with two symmetrically arranged stirring paddles rotatably mounted on the housing.
[0011] In the aforementioned heating device for foam molding of shoe soles, a servo motor is fixedly connected to the top of the housing, a drive gear is fixedly connected to the output shaft of the servo motor, and a driven gear matching the drive gear is installed on the stirring paddle at a position corresponding to the drive gear.
[0012] In the aforementioned heating device for foam molding of shoe soles, connecting rods are fixedly connected to both sides of the bottom of the machine housing, and the bottoms of the two connecting rods are fixedly connected by a mounting ring. An annular scraper matching the inner wall of the heating shell is fixedly connected to the edge of the mounting ring.
[0013] The heating device for foam molding of shoe soles described above includes a driving assembly comprising a mounting base fixedly connected to the side of the heating shell, an electric telescopic rod for driving the shell to rise and fall mounted on the mounting base, a driving seat fixedly connected to the output end of the electric telescopic rod, and the side of the driving seat near the shell being fixedly connected to the side of the shell.
[0014] This utility model has at least the following beneficial effects:
[0015] 1. This utility model realizes a heating device for foam molding of shoe soles. The foam material is heated by a heating tube embedded in the inner wall of the heating shell. The active gear and the driven gear are driven by a servo motor to rotate the stirring paddle to achieve shearing and stirring. At the same time, the electric telescopic rod drives the machine shell and the stirring paddle to rise and fall, so as to achieve all-round mixing of the foam material and improve the heating uniformity. In addition, when the machine shell rises and falls, the mounting ring and the annular scraper at the bottom of the connecting rod scrape the inner wall of the heating shell, effectively preventing the foam material from adhering and ensuring production quality.
[0016] 2. This invention heats the foaming material using a heating tube embedded in the inner wall of the heating shell. Simultaneously, a servo motor drives a drive gear, which, through the meshing of the driven gear, drives two stirring paddles to rotate. This design enables the stirring paddles to shear and stir the foaming material, effectively improving stirring efficiency. Furthermore, an electric telescopic rod raises and lowers the housing, which in turn raises and lowers the stirring paddles, achieving comprehensive mixing of the foaming material inside the heating shell. This significantly improves heating uniformity, thereby ensuring the quality of the shoe sole foaming process.
[0017] 3. Simultaneously with the lifting and lowering of the housing, this invention also drives the mounting ring at the bottom of the connecting rod to rise and fall. The annular scraper at the edge of the mounting ring scrapes away debris from the inner wall of the heating shell as the mounting ring rises and falls, effectively preventing foam material from adhering to the inner wall of the heating shell. This design not only simplifies cleaning and improves production efficiency but also ensures that the quality of subsequent shoe sole production is not affected. Attached Figure Description
[0018] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:
[0019] Figure 1 is a schematic diagram of the heating device of this utility model for foam molding of shoe soles;
[0020] Figure 2 is a cross-sectional structural schematic diagram of the heating device for foam molding of shoe soles according to this utility model;
[0021] Figure 3 is a schematic diagram of the stirring component in the heating device for foam molding of shoe soles according to this utility model;
[0022] Figure 4 is a schematic diagram of the structure of the annular scraper in the heating device for foam molding of shoe soles according to this utility model;
[0023] Figure 5 is a schematic diagram of the drive component in the heating device for foam molding of shoe soles according to this utility model.
[0024] Explanation of icon numbers:
[0025] 1. Heating shell; 11. Heating tube; 2. Stirring assembly; 3. Drive assembly;
[0026] 101. Feed pipe; 1011. Discharge pipe;
[0027] 102. Drainage ramp;
[0028] 201. Casing; 2011. Agitator;
[0029] 202. Servo motor; 2021. Drive gear; 2022. Driven gear;
[0030] 203. Connecting rod; 2031. Mounting ring; 2032. Annular scraper;
[0031] 301. Mounting base; 302. Electric telescopic rod; 303. Drive base. Detailed Implementation
[0032] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.
[0033] Please refer to Figures 1 to 5. An embodiment of this utility model provides a heating device for foam molding of shoe soles, including: a heating shell 1 and a heating tube 11 embedded in the heating shell 1. A liftable stirring component 2 is installed on the top of the heating shell 1, and driving components 3 for driving the stirring component 2 to move up and down are installed on both sides of the heating shell 1 and at positions corresponding to the stirring component 2.
[0034] By adopting the above technical solution, the foaming material is heated by the heating tube 11 embedded in the inner wall of the heating shell 1. The servo motor 202 drives the active gear 2021 and the driven gear 2022 to mesh, which drives the stirring paddle 2011 to rotate to achieve shearing and stirring. At the same time, the electric telescopic rod 302 drives the machine shell 201 and the stirring paddle 2011 to rise and fall, so as to achieve all-round mixing of the foaming material and improve the heating uniformity. In addition, when the machine shell 201 rises and falls, it drives the mounting ring 2031 and the annular scraper 2032 at the bottom of the connecting rod 203 to scrape the inner wall of the heating shell 1, effectively avoiding the foaming material from adhering and ensuring production quality.
[0035] To facilitate the addition of foaming material into the heating shell 1, in this embodiment: a feed pipe 101 is installed on the top of the side of the heating shell 1, and a discharge pipe 1011 is installed on the bottom of the heating shell 1. By setting the feed pipe 101 on the top of the side of the heating shell 1, the foaming material can be conveniently and accurately added into the heating shell 1, improving the convenience of production operations; while setting the discharge pipe 1011 at the bottom of the heating shell 1 facilitates the smooth discharge of the foaming material in the heating shell 1 after the foaming molding is completed, ensuring the smooth progress of the production process.
[0036] In order to allow the foaming material to be discharged more smoothly from the discharge pipe 1011, in this embodiment, a flow guide plate 102 is installed at the bottom of the inner wall of the heating shell 1 and at the position corresponding to the discharge pipe 1011.
[0037] To achieve efficient mixing of the foaming material, in this embodiment: the stirring assembly 2 includes a liftable housing 201, on which two symmetrically arranged stirring paddles 2011 are rotatably mounted. A servo motor 202 is fixedly connected to the top of the housing 201, and a drive gear 2021 is fixedly connected to the output shaft of the servo motor 202. A driven gear 2022, matching the drive gear 2021, is installed on the stirring paddle 2011 at a position corresponding to the drive gear 2021. The servo motor 202 drives the two stirring paddles 2011 to rotate through the meshing action of the drive gear 2021 and the driven gear 2022, thereby achieving shearing and mixing of the foaming material. This mixing method can more effectively disperse the foaming material, improve the uniformity and efficiency of mixing, and thus improve the quality of shoe sole foaming.
[0038] To prevent foam material from adhering to the inner wall of the heating shell 1, in this embodiment: connecting rods 203 are fixedly connected to both sides of the bottom of the housing 201. The bottoms of the two connecting rods 203 are fixedly connected by mounting rings 2031. An annular scraper 2032 matching the inner wall of the heating shell 1 is fixedly connected to the edge of the mounting rings 2031. During the lifting and lowering of the housing 201, the connecting rods 203 drive the mounting rings 2031 and the annular scraper 2032 to lift and lower synchronously. The annular scraper 2032 can scrape off the inner wall of the heating shell 1, effectively preventing foam material from adhering to the inner wall of the heating shell 1, ensuring the cleanliness of the inner wall of the heating shell 1, reducing the amount of cleaning work, and preventing the adhering foam material from affecting subsequent production, thus ensuring stable product quality.
[0039] To achieve the lifting function of the stirring component 2, in this embodiment: the driving component 3 includes a mounting base 301 fixedly connected to the side of the heating shell 1. An electric telescopic rod 302 for driving the housing 201 to lift is mounted on the mounting base 301. A driving seat 303 is fixedly connected to the output end of the electric telescopic rod 302, and the side of the driving seat 303 near the housing 201 is fixedly connected to the side of the housing 201. Through the extension and retraction of the electric telescopic rod 302, the housing 201 is driven to lift via the driving seat 303, thus realizing the lifting function of the stirring component 2. This allows the stirring paddle 2011 to stir at different heights inside the heating shell 1, thereby achieving all-round mixing of the foaming material, further improving heating uniformity and stirring effect, and improving the quality of shoe sole foam molding.
[0040] The working principle of this invention is as follows: The heating tube 11 embedded in the inner wall of the heating shell 1 heats the foaming material inside the heating shell 1, ensuring that the foaming material reaches a suitable foaming temperature. Simultaneously, the servo motor 202 starts, and its output shaft drives the drive gear 2021 to rotate. Under the meshing action of the drive gear 2021 and the driven gear 2022, the two stirring paddles 2011 rotate, shearing and stirring the foaming material to ensure thorough mixing and improve the uniformity of the stirring. Furthermore, the electric telescopic rod 302 extends and retracts on the mounting base 301, driving the housing 201 to rise and fall via the drive base 303. This, in turn, causes the two stirring paddles 2011 on the housing 201 to rise and fall at different heights within the heating shell 1, achieving comprehensive mixing of the foaming material inside the heating shell 1, ensuring uniform heating, and improving the quality of the foamed sole molding. While the housing 201 is raised and lowered, the connecting rod 203 drives the mounting ring 2031 to rise and fall. The annular scraper 2032 at the edge of the mounting ring 2031 scrapes the inner wall of the heating shell 1 to prevent the foaming material from adhering to the inner wall of the heating shell 1, ensuring the cleanliness of the inner wall of the heating shell 1, reducing the amount of cleaning work, and ensuring the smooth progress of subsequent production.
[0041] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.
Claims
1. A heating device for foam molding of shoe soles, comprising a heating shell (1) and a heating tube (11) embedded in the heating shell (1), characterized in that, The top of the heating shell (1) is equipped with a liftable stirring component (2), and on both sides of the heating shell (1) and at positions corresponding to the stirring component (2), a drive component (3) is installed to drive the stirring component (2) to move up and down.
2. The heating equipment for foam molding of shoe soles according to claim 1, characterized in that: A feed pipe (101) is installed on the top of the side of the heating shell (1), and a discharge pipe (1011) is installed on the bottom of the heating shell (1).
3. The heating apparatus for shoe sole foam molding according to claim 2, wherein: A flow guide plate (102) is installed at the bottom of the inner wall of the heating shell (1) and at the position corresponding to the discharge pipe (1011).
4. The heating equipment for foam molding of shoe soles according to claim 3, characterized in that: The stirring assembly (2) includes a liftable housing (201) on which two symmetrically arranged stirring paddles (2011) are rotatably mounted.
5. The heating device for foam molding of shoe soles according to claim 4, characterized in that: A servo motor (202) is fixedly connected to the top of the housing (201), and a drive gear (2021) is fixedly connected to the output shaft of the servo motor (202). A driven gear (2022) matching the drive gear (2021) is installed on the stirring paddle (2011) at a position corresponding to the drive gear (2021).
6. The heating apparatus for shoe sole foam molding according to claim 5, wherein: Both sides of the bottom of the housing (201) are fixedly connected with connecting rods (203). The bottoms of the two connecting rods (203) are fixedly connected by mounting rings (2031). An annular scraper (2032) matching the inner wall of the heating shell (1) is fixedly connected to the edge of the mounting ring (2031).
7. The heating apparatus for shoe sole foam molding according to claim 6, wherein: The drive assembly (3) includes a mounting base (301) fixedly connected to the side of the heating shell (1). An electric telescopic rod (302) for driving the housing (201) to rise and fall is mounted on the mounting base (301). A drive seat (303) is fixedly connected to the output end of the electric telescopic rod (302), and the side of the drive seat (303) near the housing (201) is fixedly connected to the side of the housing (201).