Sole supercritical foaming equipment
By introducing an agitation mechanism into the supercritical foaming equipment for shoe soles, and using an internal toothed ring and fan blades to drive the flow of carbon dioxide gas, the problem of uneven distribution of inert gas was solved, thereby improving the uniformity of foam cells and product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-20
- Publication Date
- 2026-04-17
AI Technical Summary
In existing supercritical foaming equipment for shoe soles, the inert gas is unevenly distributed, resulting in inconsistent cell sizes and affecting product quality.
A supercritical foaming device for shoe soles, including a stirring mechanism, was designed. The internal gear ring drives the connecting arc plate and fan blade plate to rotate, which promotes the flow of carbon dioxide gas in the device and ensures that the small blank cold mold product is in uniform contact with carbon dioxide.
This achieves uniform flow of carbon dioxide gas within the equipment, ensuring uniform contact between the preform cold mold product and the gas, thus improving the uniformity of the bubble structure and product quality.
Smart Images

Figure CN224130297U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of supercritical foaming technology, and in particular to a supercritical foaming device for shoe soles. Background Technology
[0002] Supercritical foaming of shoe soles is an advanced manufacturing process that utilizes the dependence of the solubility of supercritical fluids in polymers on pressure and temperature to create foam materials with microporous structures. Modified nylon particles are injection molded to obtain small preform cold mold products, which are then foamed.
[0003] A search revealed a Chinese patent publication number, CN220763310U, which discloses a supercritical foaming device for shoe soles. This patent uses a first heating plate and a second heating plate to gradually increase the air temperature inside the shell. At this time, the blank on the connecting seat gradually undergoes supercritical foaming. However, this device has certain problems: the inert gas inside the shell cannot circulate, resulting in uneven distribution of the inert gas and causing the material to form bubbles of varying sizes, which affects product quality. Utility Model Content
[0004] The purpose of this invention is to provide a supercritical foaming device for shoe soles in order to solve the above-mentioned problems.
[0005] This utility model achieves the above objectives through the following technical solutions:
[0006] A supercritical foaming device for shoe soles includes a base plate, an equipment shell fixedly connected to the base plate, a heating tube fixedly installed on the bottom wall of the equipment shell, an opening and closing mechanism at the front end of the equipment shell, a transmission mechanism at the rear end of the equipment shell, and a stirring mechanism inside the equipment shell.
[0007] The agitation mechanism includes an internal gear ring, which is coaxially rotatably connected to the rear wall of the equipment housing. A fixing ring is fixedly connected to the front side of the equipment housing. An annular groove is opened at the rear end of the fixing ring. Multiple connecting arc plates are fixedly connected to the front end of the internal gear ring. The multiple connecting arc plates are evenly distributed along the circumference of the internal gear ring. The front end of the connecting arc plate is slidably connected inside the annular groove. A fan blade is fixed on the side of the connecting arc plate near the axis of the equipment housing.
[0008] Preferably, the transmission mechanism includes a drive motor, which is fixedly installed at the rear end of the equipment housing. The output shaft of the drive motor is fixedly connected to a drive gear, which meshes with an internal gear ring.
[0009] Preferably, a support frame is fixedly connected to the front end of the equipment casing, a support plate is fixedly connected to the upper end of the support frame, and the rear end of the support plate is fixedly connected to the rear wall of the equipment casing.
[0010] Preferably, a connecting pipe is fixedly connected to the upper end of one side of the equipment casing, the connecting pipe is connected to the inside of the equipment casing, and a gas cylinder is fixedly connected to the upper end of the connecting pipe.
[0011] Preferably, a mounting bracket is fixedly installed at the front end of the equipment casing, the mounting bracket is located on one side of the equipment casing, and a compartment door is rotatably connected inside the mounting bracket.
[0012] Preferably, a power motor is fixedly installed on the upper end of the mounting bracket, and the output shaft of the power motor is fixedly connected to the compartment door.
[0013] Preferably, a sealing gasket is fixedly connected to the side of the door closest to the equipment casing.
[0014] The beneficial effects are as follows: carbon dioxide gas is added into the equipment shell, the heating tube is turned on to heat the equipment shell, the transmission mechanism drives the internal gear ring to rotate the connecting arc plate, and the connecting arc plate drives the fan blade plate to rotate to push the carbon dioxide gas in the equipment shell, so that the carbon dioxide flows continuously in the equipment shell and ensures that the small blank cold mold product is in uniform contact with the carbon dioxide.
[0015] The additional technical features and advantages of this utility model will become more apparent from the following description, or may be learned through specific practice of this utility model. Attached Figure Description
[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0017] Figure 1 This is a perspective view of a supercritical foaming device for shoe soles as described in this utility model;
[0018] Figure 2 This is a front view of a supercritical foaming device for shoe soles as described in this utility model;
[0019] Figure 3 This is a schematic diagram of the internal structure of a supercritical foaming device for shoe soles according to this utility model;
[0020] Figure 4 This is a cross-sectional perspective view of a supercritical foaming device for shoe soles as described in this utility model;
[0021] Figure 5 yes Figure 4 Enlarged view of point A.
[0022] The reference numerals in the attached drawings are explained as follows: 101, base plate; 102, equipment casing; 103, heating tube; 201, mounting bracket; 202, power motor; 203, door; 301, support frame; 302, support plate; 401, internal gear ring; 402, fixing ring; 403, connecting arc plate; 404, fan blade plate; 501, transmission motor; 502, drive gear; 601, connecting pipe; 602, gas tank; 7, sealing gasket. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0024] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0025] The present invention will be further described below with reference to the accompanying drawings:
[0026] like Figures 1-5 As shown, a supercritical foaming device for shoe soles includes a base plate 101, a device housing 102 fixedly connected to the base plate 101, a heating tube 103 fixedly installed on the bottom wall of the device housing 102, an opening and closing mechanism at the front end of the device housing 102, a transmission mechanism at the rear end of the device housing 102, and a stirring mechanism inside the device housing 102.
[0027] The agitation mechanism includes an internal gear ring 401, which is coaxially rotatably connected to the rear wall of the equipment housing 102. A fixing ring 402 is fixedly connected to the front side of the equipment housing 102, and an annular groove is opened at the rear end of the fixing ring 402. Multiple connecting arc plates 403 are fixedly connected to the front end of the internal gear ring 401. The multiple connecting arc plates 403 are evenly distributed around the circumference of the internal gear ring 401. The front end of the connecting arc plates 403 is slidably connected to the inside of the annular groove. A fan blade 404 is fixed on the side of the connecting arc plate 403 near the axis of the equipment housing 102 to push the small blank cold mold product into the equipment housing. After step 102, the opening and closing mechanism creates a sealed state inside the equipment housing 102. Then, carbon dioxide gas is added into the equipment housing 102, and the heating pipe 103 is turned on to heat the inside of the equipment housing 102. The transmission mechanism drives the internal gear ring 401 to rotate, which in turn drives the connecting arc plate 403 to rotate. The connecting arc plate 403 drives the fan blade plate 404 to rotate, pushing the carbon dioxide gas inside the equipment housing 102. This ensures that the carbon dioxide flows continuously inside the equipment housing 102, ensuring that the small blank cold mold product is in uniform contact with the carbon dioxide.
[0028] The transmission mechanism includes a drive motor 501, which is fixedly installed at the rear end of the equipment housing 102. The output shaft of the drive motor 501 is fixedly connected to a drive gear 502, which meshes with an internal gear ring 401. The drive motor 501 drives the drive gear 502 to rotate, so that the drive gear 502 meshes with the internal gear ring 401.
[0029] A support frame 301 is fixedly connected to the front end of the equipment housing 102. A support plate 302 is fixedly connected to the upper end of the support frame 301. The rear end of the support plate 302 is fixedly connected to the rear wall of the equipment housing 102. A movable plate containing small blank cold mold products is placed on the support plate 302 and the movable plate is pushed into the equipment housing 102.
[0030] A connecting pipe 601 is fixedly connected to the upper end of one side of the equipment housing 102. The connecting pipe 601 communicates with the inside of the equipment housing 102. A gas tank 602 is fixedly connected to the upper end of the connecting pipe 601. The gas in the gas tank 602 enters the equipment housing 102 through the connecting pipe 601.
[0031] A mounting bracket 201 is fixedly installed at the front end of the equipment housing 102. The mounting bracket 201 is located on one side of the equipment housing 102, and a door 203 is rotatably connected inside the mounting bracket 201.
[0032] A power motor 202 is fixedly installed on the upper end of the mounting bracket 201, and the output shaft of the power motor 202 is fixedly connected to the compartment door 203.
[0033] A sealing gasket 7 is fixedly connected to the side of the door 203 near the equipment housing 102. The power motor 202 drives the door 203 to rotate, so that the door 203 abuts against the front end of the equipment housing 102 and the sealing gasket 7 abuts against the inner wall of the equipment housing 102.
[0034] Working principle: During use, the movable plate containing the small preform cold mold is placed on the support plate 302 and pushed into the equipment housing 102. Then, the power motor 202 drives the door 203 to rotate, so that the door 203 abuts against the front end of the equipment housing 102. The sealing gasket 7 abuts against the inner wall of the equipment housing 102, forming a sealed state inside the equipment housing 102. Then, the gas in the gas tank 602 enters the equipment housing 102 through the connecting pipe 601. At the same time, the heating pipe 103 is turned on to heat the inside of the equipment housing 102. The drive motor 501 drives the drive gear 502 to rotate, so that the drive gear 502 meshes with the internal gear ring 401, driving the internal gear ring 401 to rotate. The internal gear ring 401 drives the connecting arc plate 403 to rotate, and through the connecting arc plate 403, drives the fan blade plate 404 to rotate, pushing the carbon dioxide gas inside the equipment housing 102. This ensures that the carbon dioxide flows continuously inside the equipment housing 102, ensuring that the small preform cold mold is in uniform contact with the carbon dioxide.
[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A sole supercritical foaming device, comprising a bottom plate (101), a device shell (102) is fixedly connected on the bottom plate (101), characterized in that: A heating tube (103) is fixedly installed on the bottom wall of the equipment housing (102). The front end of the equipment housing (102) is provided with an opening and closing mechanism, the rear end of the equipment housing (102) is provided with a transmission mechanism, and the inside of the equipment housing (102) is provided with a stirring mechanism. The agitation mechanism includes an internal gear ring (401), which is coaxially rotatably connected to the rear wall of the equipment housing (102). A fixing ring (402) is fixedly connected to the front side of the equipment housing (102). An annular groove is opened at the rear end of the fixing ring (402). A plurality of connecting arc plates (403) are fixedly connected to the front end of the internal gear ring (401). The plurality of connecting arc plates (403) are evenly distributed around the circumference of the internal gear ring (401). The front end of the connecting arc plate (403) is slidably connected to the inside of the annular groove. A fan blade (404) is fixed on the side of the connecting arc plate (403) near the axis of the equipment housing (102).
2. A shoe sole supercritical foaming apparatus according to claim 1, wherein: The transmission mechanism includes a transmission motor (501), which is fixedly installed at the rear end of the equipment housing (102). The output shaft of the transmission motor (501) is fixedly connected to a drive gear (502), which meshes with the internal gear ring (401).
3. A shoe sole supercritical foaming apparatus according to claim 1, wherein: A support frame (301) is fixedly connected to the front end of the equipment housing (102), a support plate (302) is fixedly connected to the upper end of the support frame (301), and the rear end of the support plate (302) is fixedly connected to the rear wall of the equipment housing (102).
4. A shoe sole supercritical foaming apparatus according to claim 1, wherein: A connecting pipe (601) is fixedly connected to the upper end of one side of the equipment housing (102). The connecting pipe (601) communicates with the inside of the equipment housing (102). A gas tank (602) is fixedly connected to the upper end of the connecting pipe (601).
5. A shoe sole supercritical foaming apparatus according to claim 1, wherein: A mounting bracket (201) is fixedly installed at the front end of the equipment housing (102). The mounting bracket (201) is located on one side of the equipment housing (102), and a door (203) is rotatably connected inside the mounting bracket (201).
6. A shoe sole supercritical foaming apparatus according to claim 5, wherein: A power motor (202) is fixedly installed on the upper end of the mounting bracket (201), and the output shaft of the power motor (202) is fixedly connected to the compartment door (203).
7. The supercritical foaming equipment for shoe soles according to claim 6, characterized in that: A sealing gasket (7) is fixedly connected to the side of the door (203) near the equipment housing (102).
Citation Information
Patent Citations
Sole supercritical foaming equipment
CN220763310U