A supercritical fluid foaming shoe material production equipment and process with smooth surface

Abstract

The present application discloses a supercritical fluid foaming shoe material production equipment and process with a flat surface, which belongs to the technical field of foaming mold fastening structure, including an operating table, on which a screw injection molding machine and a support frame are respectively arranged, and a mold component is connected between the operating table and the support frame, and the mold component includes a movable film component and a fixed mold component; the fixed mold component includes a fixed mold, and two side mounting seats are symmetrically connected to the fixed mold, and each side mounting seat is provided with a number of fastening structures for fixing the fixed mold on the support frame, and the fastening structure includes a fastening screw and a rotation-inhibiting component. After the present application installs the mold component through the fastening structure, the rotation-inhibiting component in the fastening structure can monitor the tightening degree of the fastening screws in the molding foaming process in real time, and when the fastening screws become loose and fail, a fault alarm signal can be promptly issued to the outside to remind the staff to promptly troubleshoot the fault.

Description

Technical Field

[0001] The present application relates to the technical field of foaming mold fastening structures, and more specifically, to a production device and process for supercritical fluid foaming shoe materials with a smooth surface. Background Art

[0002] Supercritical foaming is a process technology that uses supercritical carbon dioxide and nitrogen to replace organic foaming agents and foams at a certain pressure and temperature. As an important way to achieve lightweight polymer materials, foaming plays a vital role. Supercritical fluid foaming polymer is a safe and green process technology. Its excellent thermal insulation, mechanical properties and low carbon and environmental protection meet the needs of rapidly developing emerging industries and high-quality life, and the market prospects are considerable.

[0003] In the field of shoe material manufacturing, supercritical fluid foaming technology is mainly used in the preparation of midsole materials for running shoes, sports shoes, etc. The midsole materials prepared by this technology have ultra-light weight, excellent shock absorption performance and resilience, which can significantly reduce the impact of exercise on the body, reduce the risk of injury, and provide a more stable sports experience.

[0004] When the screw-type injection molding foaming equipment is in operation, the injection nozzle of the above-mentioned equipment is often unstable and prone to vibration during the process of injecting the molten material into the cavity of the molding mold due to improper settings of parameters such as injection speed and pressure. However, the molding molds in the existing screw-type injection molding foaming equipment are mostly fixed and installed by traditional fastening structures such as bolts. This makes it easy for the fastening structure close to the vibration source to loosen due to the vibration generated during the injection process during long-term use of the equipment, thereby causing the mold to shift or shake during the supercritical fluid molding process, affecting the positioning accuracy of the mold, and causing the final supercritical foamed shoe material products to have defects such as inaccurate size or unqualified shape, affecting the product quality of the foamed shoe material, and causing the product qualification rate to decrease. This will not only cause a waste of resources, but also lead to an increase in the production cost of the company's foamed shoe material production, which cannot meet actual production requirements.

[0005] In view of this, we propose a supercritical fluid foaming shoe material production equipment and process with a smooth surface. Summary of the invention

[0006] Technical problem to be solved: The purpose of this application is to provide a supercritical fluid foaming shoe material production equipment and process with a smooth surface, which solves the technical problems raised in the above-mentioned background technology.

[0007] Technical solution: The technical solution of the present application provides a supercritical fluid foaming shoe material production equipment with a flat surface, including an operating table, on which a screw injection molding machine and a support frame are respectively provided, and a mold component is connected between the operating table and the support frame, and the mold component includes a movable mold component and a fixed mold component;

[0008] The fixed mold assembly includes a fixed mold, and two side mounting seats are symmetrically connected to the fixed mold. Each side mounting seat is provided with a plurality of fastening structures for fixing the fixed mold on the support frame, and the fastening structures include fastening screws and anti-rotation components;

[0009] The anti-rotation component includes an annular hollow insulating pad, a limiting convex strip is connected to the inner ring wall of the annular hollow insulating pad, a sealing cover at the end opening of the annular hollow insulating pad is connected to an annular insulating bottom sealing plate, a control component is provided in the inner cavity of the annular hollow insulating pad, a retractable step-in component is provided on the side wall of the annular hollow insulating pad, a passive ring body is provided in the inner cavity of the annular hollow insulating pad, a plurality of pressure springs are evenly connected to the passive ring body, a transition chamfered portion that can drive the step-in component to move is provided on the passive ring body, a first guide component is provided at a position corresponding to the position of the step-in component on the passive ring body, and a plurality of second guide components are also provided on the passive ring body, the first guide component and the second guide component are in a circular array and are evenly arranged in the inner cavity of the annular hollow insulating pad.

[0010] As an optional solution of the technical solution of this application document, the step-in-step component includes an insulating retractable column and a fixed trigger spring;

[0011] A trigger ring is connected to the side wall of the insulating retractable column, and the side wall surface of the trigger ring is flush with the side wall surface of the insulating retractable column;

[0012] A reset unit is also provided on the insulating retractable column.

[0013] As an optional solution of the technical solution of the present application document, the reset unit includes a synchronous slip ring sleeved on the outer periphery of the side wall of the insulating retractable column;

[0014] There are multiple return springs evenly connected on the synchronous slip ring.

[0015] As an optional solution of the technical solution of this application document, a sliding cavity is opened on the side wall of the inner cavity of the annular hollow insulating cushion seat, and the synchronous slip ring slides inside the sliding cavity;

[0016] One end of the return spring away from the synchronous slip ring is connected to the end of the sliding cavity;

[0017] One end of the insulating retractable column away from the trigger ring penetrates through the side wall of the annular hollow insulating cushion seat;

[0018] The fixed trigger spring is connected to the side wall of the sliding cavity;

[0019] A positioning straight groove matching the limiting convex strip is provided on the screw rod of the fastening screw;

[0020] One end of the pressure spring away from the passive ring body is connected to the annular insulating bottom sealing plate.

[0021] As an optional solution of the technical solution of the present application document, the first guide member includes a first insulating guide tube whose bottom end is connected to the annular insulating bottom sealing plate;

[0022] A first insulating top rod is slidably inserted into the end opening of the first insulating guide tube;

[0023] A movable switch spring connected to the end of the first insulating top rod and a fixed switch terminal connected to the annular insulating bottom sealing plate are respectively arranged in the inner cavity of the first insulating guide tube, and the movable switch spring and the fixed switch terminal are arranged opposite to each other.

[0024] As an optional solution of the technical solution of the present application document, the second guide member includes a second insulating guide tube whose bottom end is connected to the annular insulating bottom sealing plate;

[0025] A second insulating top rod is slidably inserted into the end opening of the second insulating guide tube;

[0026] The first insulating top rod and the second insulating top rod are commonly connected with a passive ring body, and the ends of the first insulating top rod and the second insulating top rod both penetrate the end of the annular hollow insulating cushion seat.

[0027] As an optional solution of the technical solution of the present application document, the control element includes a control circuit board connected to the annular insulating bottom sealing plate;

[0028] The control circuit board is respectively connected with a wireless signal transmitter and an alarm;

[0029] When the trigger ring contacts the fixed trigger spring, the trigger control circuit board controls the wireless signal transmitter to send an alarm signal to the controller of the operating table;

[0030] When the movable switch spring contacts the fixed switch terminal, the alarm is triggered to turn on.

[0031] As an optional solution of the technical solution of the present application document, the movable mold assembly includes a movable mold arranged opposite to the fixed mold;

[0032] An electric telescopic device is provided on the limiting convex strip and is fixedly installed between the limiting convex strip and the operating table, and the electric telescopic device is also fixedly installed between the limiting convex strip and the operating table through a fastening structure.

[0033] As an optional solution of the technical solution of this application document, the injection nozzle seal of the screw injection molding machine is inserted into the feed port of the fixed mold.

[0034] The technical solution of the present application provides a production process of a supercritical fluid foaming shoe material production device with a smooth surface, comprising the following steps:

[0035] S1. Fix the movable mold assembly and the fixed mold assembly in the mold component between the operating table and the support frame through the fastening structure;

[0036] S2. The anti-rotation component in the fastening structure can monitor the tightening degree of the fastening screws in real time;

[0037] S3, extruding the hot-melt polymer into the cavity of the mold component after mold closing through a screw injection molding machine;

[0038] S4, filling the mold component with supercritical fluid;

[0039] S5, the supercritical fluid diffuses into the polymer and reaches a saturated state, forming a polymer / gas homogeneous system;

[0040] S6, opening the mold component to release the pressure of the polymer / gas homogeneous system for foaming, thereby obtaining a primary product of the supercritical fluid foamed shoe material;

[0041] S7, cutting the pre-finished foamed shoe material to obtain a finished foamed shoe material.

[0042] Beneficial effects: One or more technical solutions provided in the technical solution of the present application have at least the following technical effects or advantages: 1. After the mold component is installed through the fastening structure of the present application, the tightening degree of the fastening screws during the molding and foaming process can be monitored in real time through the anti-rotation component in the fastening structure, and when the fastening screws become loose and fail, a fault alarm signal can be promptly sent out to remind the staff to promptly troubleshoot the fault to ensure the production quality of supercritical fluid footwear products.

[0043] 2. After the fastening screw in the fastening structure is tightened, the first guide member and the second guide member simultaneously apply a reverse force to the screw head of the fastening screw under the action of the reverse elastic force provided by the pressure spring, so as to increase the friction force that needs to be overcome when the fastening screw loosens and reverses, and inhibit the fastening screw from rotating relative to the anti-rotation component, so as to achieve anti-loosening treatment of the fastening structure.

[0044] 3. When the fastening screws in the fastening structure become loose due to vibration, the first guide member and the second guide member in the anti-rotation component continuously extend from the end of the annular hollow insulating pad, and in this process, the insulating retraction column in the aligning member continuously extends from the inside of the sliding cavity along the transition chamfer, and when the trigger ring contacts the fixed trigger spring, the trigger control circuit board controls the wireless signal transmitter to send an alarm signal to the controller of the operating table, reminding the staff to promptly check the fault to ensure the production quality of supercritical fluid footwear products.

[0045] 4. When installing the mold structure, the fastening screws in the fastening structure are overtightened, causing the annular hollow insulating pad in the anti-rotation component to be squeezed and deformed. During the process of the first guide member synchronously retracting with the annular hollow insulating pad, the active switch spring is driven to contact the fixed switch terminal and trigger the alarm to turn on, reminding the staff that the normal activities of the aligning member, the first guide member and the second guide member in the anti-rotation component may be affected by the deformation of the annular hollow insulating pad, and the anti-rotation component needs to be replaced in time to ensure that the anti-loosening and alarm functions of the fastening structure can function normally after the mold structure is installed. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 This is a schematic diagram of the overall structure of this application.

[0047] Figure 2 For this application Figure 1 A schematic diagram of the enlarged local structure of part A.

[0048] Figure 3 For this application Figure 2 Schematic diagram of the enlarged local structure of part B.

[0049] Figure 4 This is a top view of the overall structure of this application.

[0050] Figure 5 For this application Figure 4 Schematic diagram of the enlarged local structure of part C in the middle.

[0051] Figure 6 For this application Figure 5 A schematic diagram of the enlarged local structure of part D in the middle.

[0052] Figure 7 It is a schematic diagram of the structure of the anti-rotation component in this application.

[0053] Figure 8 It is a cross-sectional schematic diagram of the fastening structure of the present application.

[0054] Fig. 9 For this application Figure 8 Schematic diagram of the enlarged local structure of part E in the middle.

[0055] Fig.10 For this application Fig. 9 A schematic diagram of the enlarged local structure of part F in the middle.

[0056] Fig.11 For this application Fig. 9 Schematic diagram of the enlarged local structure of part G in the middle.

[0057] Description of the numbers in the figure:

[0058] 101. operating table; 102. screw injection molding machine; 103. supporting frame;

[0059] 201. movable mold; 203. fixed mold; 204. side mounting seat; 205. annular hollow insulating cushion seat; 206. fastening screw; 207. annular insulating bottom sealing plate; 208. insulating retracting column; 210. limiting convex strip; 212. control circuit board; 213. wireless signal transmitter; 214. alarm; 215. first insulating guide tube; 216. first insulating top rod; 217. passive ring body; 218. synchronous slip ring; 219. reset spring; 220. trigger ring; 221. fixed trigger spring; 222. transition chamfer; 223. movable switch spring; 224. fixed switch terminal; 225. pressure spring; 226. second insulating guide tube; 227. second insulating top rod. DETAILED DESCRIPTION

[0060] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0061] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0062] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or a connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0063] Reference Figure 1 , Figure 2 as well as Figures 4 to 10, the embodiment of the present application provides a supercritical fluid foaming shoe material production device with a flat surface, including an operating table 101, on which a screw injection molding machine 102 and a support frame 103 are respectively provided, and the support frame 103 is preferably integrally formed and connected to the operating table 101;

[0064] A mold component is connected between the operating table 101 and the support frame 103, and the mold component includes a movable mold component and a fixed mold component;

[0065] The fixed mold assembly includes a fixed mold 203, and the injection nozzle of the screw injection molding machine 102 is sealed and inserted into the feed port of the fixed mold 203;

[0066] Two side mounting seats 204 are symmetrically connected to the fixed mold 203, and the two side mounting seats 204 are symmetrically connected to the fixed mold 203 in an integral manner at the front and rear.

[0067] Each side mounting seat 204 is provided with a plurality of fastening structures for fixing the fixed mold 203 on the support frame 103, and the fastening structures include fastening screws 206 and anti-rotation components;

[0068] The anti-rotation component includes an annular hollow insulating seat 205, which is made of insulating material. A limiting convex strip 210 is connected to the inner ring wall of the annular hollow insulating seat 205, and a positioning straight groove adapted to the limiting convex strip 210 is opened on the screw rod of the fastening screw 206;

[0069] The opening at the end of the annular hollow insulating cushion 205 is sealed and covered with an annular insulating bottom sealing plate 207, which is made of insulating material. A control component is provided in the inner cavity of the annular hollow insulating cushion 205, and a retractable step-in component is provided on the side wall of the annular hollow insulating cushion 205. A passive ring body 217 is provided in the inner cavity of the annular hollow insulating cushion 205, and a plurality of pressure springs 225 are evenly connected to the passive ring body 217. One end of the pressure spring 225 away from the passive ring body 217 is connected to the annular insulating bottom sealing plate 207;

[0070] The passive ring body 217 is provided with a transition chamfer 222 that can drive the stepping member to move. The passive ring body 217 is provided with a first guide member at a position corresponding to the stepping member. The passive ring body 217 is also provided with a plurality of second guide members. The first guide members and the second guide members are arranged in a circular array and are evenly arranged in the inner cavity of the annular hollow insulating cushion seat 205 (refer to Figures 7 to 9 ).

[0071] After the mold component is installed through the fastening structure of the present application, the tightening degree of the fastening screw 206 during the molding and foaming process can be monitored in real time through the anti-rotation component in the fastening structure, and when the fastening screw 206 becomes loose and fails, a fault alarm signal can be promptly sent out to remind the staff to promptly troubleshoot the fault to ensure the production quality of supercritical fluid footwear products.

[0072] Reference Figure 1 and Figure 4 , the embodiment of the present application provides a supercritical fluid foaming shoe material production device with a flat surface, the movable mold assembly includes a movable mold 201 arranged opposite to a fixed mold 203;

[0073] The limiting convex strip 210 is provided with an electric telescopic device fixedly installed between the limiting convex strip 210 and the operating table 101, and the electric telescopic device is also fixedly installed between the limiting convex strip 210 and the operating table 101 through a fastening structure.

[0074] Among them, the electric telescopic device is a common device such as an electric cylinder that can automatically extend or shorten as needed. It is a known prior art and will not be described here. The electric telescopic device in this article is electrically connected to the controller of the operating table 101, and the extension or shortening of the electric telescopic device is controlled by the controller on the operating table 101.

[0075] Reference Figures 8 to 10 , the embodiment of the present application provides a supercritical fluid foaming shoe material production device with a flat surface, the step-in-step component includes an insulating retractable column 208 and a fixed trigger spring 221, wherein the insulating retractable column 208 is made of an insulating material;

[0076] A trigger ring 220 is connected to the side wall of the insulating retractable column 208, and the side wall surface of the trigger ring 220 is flush with the side wall surface of the insulating retractable column 208;

[0077] The insulating retractable column 208 is also provided with a reset unit.

[0078] Reference Fig. 9 and Fig.10 , the embodiment of the present application provides a supercritical fluid foaming shoe material production device with a flat surface, the reset unit includes a synchronous slip ring 218 sleeved on the outer periphery of the side wall of the insulating retractable column 208, a sliding cavity is opened on the inner cavity side wall of the annular hollow insulating cushion 205, and the synchronous slip ring 218 slides inside the sliding cavity;

[0079] A plurality of return springs 219 are evenly connected to the synchronous slip ring 218, and one end of the return spring 219 away from the synchronous slip ring 218 is connected to the end of the sliding cavity;

[0080] One end of the insulating retracted column 208 away from the trigger ring 220 penetrates through the side wall of the annular hollow insulating cushion 205;

[0081] The fixed trigger spring piece 221 is connected to the side wall of the sliding cavity.

[0082] During the tightening process of the fastening screw 206 in the fastening structure, the continuously tightened fastening screw 206 drives the first guide member and the second guide member in the anti-rotation component to contract simultaneously. During the contraction of the first guide member and the second guide member, the transition chamfer 222 on the passive ring body 217 drives the synchronization member to move. When the fastening screw 206 is tightened, under the action of the reverse elastic force provided by the pressure spring 225, the first guide member and the second guide member simultaneously apply a reverse force to the screw head of the fastening screw 206, so as to increase the friction force that needs to be overcome when the fastening screw 206 loosens and reverses, thereby inhibiting the fastening screw 206 from rotating relative to the anti-rotation component, so as to achieve anti-loosening treatment of the fastening structure.

[0083] Reference Figures 7 to 9 , the embodiment of the present application provides a supercritical fluid foaming shoe material production device with a flat surface, the first guide member includes a first insulating guide tube 215 whose bottom end is connected to the annular insulating bottom sealing plate 207, and the first insulating guide tube 215 and the second insulating guide tube 226 are both made of insulating material;

[0084] A first insulating top rod 216 is slidably inserted into the end opening of the first insulating guide tube 215. The first insulating top rod 216 and the second insulating top rod 227 are both made of insulating materials.

[0085] A movable switch spring 223 connected to the end of the first insulating top rod 216 and a fixed switch terminal 224 connected to the annular insulating bottom sealing plate 207 are respectively disposed in the inner cavity of the first insulating guide tube 215, and the movable switch spring 223 and the fixed switch terminal 224 are arranged opposite to each other.

[0086] Reference Figures 7 to 9 , the embodiment of the present application provides a supercritical fluid foaming shoe material production device with a flat surface, the second guide member includes a second insulating guide tube 226 whose bottom end is connected to the annular insulating bottom sealing plate 207;

[0087] A second insulating top rod 227 is slidably inserted into the end opening of the second insulating guide tube 226;

[0088] The first insulating top rod 216 and the second insulating top rod 227 are commonly connected with a passive ring body 217 , and the ends of the first insulating top rod 216 and the second insulating top rod 227 both pass through the end of the annular hollow insulating cushion seat 205 .

[0089] Reference Figures 8 to 11, the embodiment of the present application provides a supercritical fluid foaming shoe material production device with a flat surface, the control component includes a control circuit board 212 connected to the annular insulating bottom sealing plate 207;

[0090] The control circuit board 212 is respectively connected with a wireless signal transmitter 213 and an alarm 214, wherein the alarm 214 is preferably a buzzer alarm;

[0091] The control circuit board 212 is electrically connected to the mains via a wire, and one end of the wire away from the control circuit board 212 passes through the annular hollow insulating pad 205 and is electrically connected to the mains, and the mains simultaneously supplies power to the control circuit board 212, the wireless signal transmitter 213, and the alarm 214. The anti-rotation component is limited by the positioning straight groove on the screw of the fastening screw 206 to prevent the anti-rotation component from rotating with the fastening screw 206 during the tightening process, thereby causing the wire connected to the control circuit board 212 to be entangled around the outer periphery of the annular hollow insulating pad 205, or even causing the wire to be disconnected under the action of the pulling force, thereby affecting the normal power supply to the control component;

[0092] When the trigger ring 220 contacts the fixed trigger spring 221, the trigger control circuit board 212 controls the wireless signal transmitter 213 to send an alarm signal to the controller of the operating console 101;

[0093] When the movable switch spring 223 contacts the fixed switch terminal 224 , the alarm 214 is triggered to turn on.

[0094] When the fastening screw 206 in the fastening structure becomes loose due to vibration, the first guide member and the second guide member in the anti-rotation component continuously extend from the end of the annular hollow insulating pad 205, and in this process, the insulating retracted column 208 in the aligning member continuously extends from the inside of the sliding cavity along the transition chamfer 222, and when the trigger ring 220 contacts the fixed trigger spring 221, the trigger control circuit board 212 controls the wireless signal transmitter 213 to send an alarm signal to the controller of the operating table 101, and the alarm information is then displayed on the display screen of the controller. The alarm prompt information displayed on the controller screen can remind the staff to promptly troubleshoot the fault to ensure the production quality of supercritical fluid shoe products.

[0095] When installing the mold structure, the fastening screws 206 in the fastening structure are overtightened, causing the annular hollow insulating pad 205 in the anti-rotation component to be squeezed and deformed. During the process of the first guide member synchronously retracting with the annular hollow insulating pad 205, the active switch spring 223 is driven to contact the fixed switch terminal 224 and trigger the alarm 214 to turn on, reminding the staff that the normal activities of the synchronizing member, the first guide member and the second guide member in the anti-rotation component may be affected by the deformation of the annular hollow insulating pad 205, and the anti-rotation component needs to be replaced in time to ensure that the anti-loosening and alarm functions of the fastening structure can function normally after the mold structure is installed.

[0096] The embodiment of the present application provides a production process of a supercritical fluid foaming shoe material production device with a smooth surface, comprising the following steps:

[0097] S1, installing and fixing the movable mold assembly and the fixed mold assembly in the mold component between the operating table 101 and the support frame 103 through the fastening structure;

[0098] S2. The anti-rotation component in the fastening structure can monitor the tightening degree of the fastening screw 206 in real time;

[0099] S3, extruding the hot-melt polymer into the cavity of the mold component after mold closing by the screw injection molding machine 102;

[0100] S4, injecting the supercritical fluid into the cavity of the mold member through the injection port on the fixed mold 203 to mix the supercritical fluid with the polymer material;

[0101] S5, the supercritical fluid diffuses into the polymer and reaches a saturated state, forming a polymer / gas homogeneous system, and then the polymer / gas homogeneous system gradually fills the cavity;

[0102] S6, opening the mold component to release the pressure of the polymer / gas homogeneous system and foam it, thereby obtaining a primary finished product of a supercritical fluid foamed shoe material with a smooth surface;

[0103] S7, cutting the primary finished foamed shoe material to obtain a finished supercritical fluid foamed shoe material with a smooth surface.

[0104] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A supercritical fluid foaming shoe material production equipment with a smooth surface, characterized in that: It comprises an operating table (101), on which a screw injection molding machine (102) and a support frame (103) are respectively arranged, and a mold component is connected between the operating table (101) and the support frame (103), wherein the mold component comprises a movable mold component and a fixed mold component; The fixed mold assembly comprises a fixed mold (203), two side mounting seats (204) are symmetrically connected to the fixed mold (203), and each side mounting seat (204) is provided with a plurality of fastening structures for fixing the fixed mold (203) on the support frame (103), and the fastening structures comprise fastening screws (206) and a rotation-inhibiting component; The anti-rotation component comprises an annular hollow insulating seat (205), the inner ring wall of the annular hollow insulating seat (205) is connected to a limiting convex strip (210), the end opening of the annular hollow insulating seat (205) is sealed and connected to an annular insulating bottom sealing plate (207), a control component is provided in the inner cavity of the annular hollow insulating seat (205), a retractable aligning component is provided on the side wall of the annular hollow insulating seat (205), and a A passive ring body (217) is provided, a plurality of pressure springs (225) are evenly connected to the passive ring body (217), a transition chamfer (222) capable of driving the stepping member to move is provided on the passive ring body (217), a first guide member is provided at a position corresponding to the position of the stepping member on the passive ring body (217), and a plurality of second guide members are also provided on the passive ring body (217), the first guide members and the second guide members are in a circular array and are evenly arranged in the inner cavity of the annular hollow insulating cushion seat (205); The first guide member comprises a first insulating guide tube (215) whose bottom end is connected to the annular insulating bottom sealing plate (207); The second guide member comprises a second insulating guide tube (226) whose bottom end is connected to the annular insulating bottom sealing plate (207); The control component comprises a control circuit board (212) connected to the annular insulating bottom sealing plate (207); The aligning member comprises an insulating retractable column (208) and a fixed trigger spring (221); A trigger ring (220) is connected to the side wall of the insulating retractable column (208), and the side wall surface of the trigger ring (220) is flush with the side wall surface of the insulating retractable column (208); A reset unit is also provided on the insulating retractable column (208).

2. The supercritical fluid foaming shoe material production equipment with a smooth surface according to claim 1 is characterized in that: The reset unit comprises a synchronous slip ring (218) sleeved on the outer periphery of the side wall of the insulating retractable column (208); A plurality of return springs (219) are evenly connected to the synchronous slip ring (218).

3. The supercritical fluid foaming shoe material production equipment with a smooth surface according to claim 2, characterized in that: A sliding cavity is provided on the inner side wall of the annular hollow insulating cushion seat (205), and a synchronous slip ring (218) slides inside the sliding cavity; One end of the return spring (219) away from the synchronous slip ring (218) is connected to the end of the sliding cavity; One end of the insulating retractable column (208) away from the trigger ring (220) penetrates the side wall of the annular hollow insulating cushion seat (205); The fixed trigger spring (221) is connected to the side wall of the sliding cavity; The screw rod of the fastening screw (206) is provided with a positioning straight groove adapted to the limiting convex strip (210); One end of the pressure spring (225) away from the passive ring body (217) is connected to the annular insulating bottom sealing plate (207).

4. The supercritical fluid foaming shoe material production equipment with a smooth surface according to claim 1, characterized in that: A first insulating top rod (216) is slidably inserted into the end opening of the first insulating guide tube (215); A movable switch spring (223) connected to the end of the first insulating top rod (216) and a fixed switch terminal (224) connected to the annular insulating bottom sealing plate (207) are respectively provided in the inner cavity of the first insulating guide tube (215), and the movable switch spring (223) and the fixed switch terminal (224) are arranged opposite to each other.

5. The supercritical fluid foaming shoe material production equipment with a smooth surface according to claim 4, characterized in that: A second insulating top rod (227) is slidably inserted into the end opening of the second insulating guide tube (226); The first insulating top rod (216) and the second insulating top rod (227) are commonly connected to a passive ring body (217), and the ends of the first insulating top rod (216) and the second insulating top rod (227) both pass through the end of the annular hollow insulating cushion seat (205).

6. The supercritical fluid foaming shoe material production equipment with a smooth surface according to claim 4, characterized in that: The control circuit board (212) is respectively connected to a wireless signal transmitter (213) and an alarm (214); When the trigger ring (220) contacts the fixed trigger spring (221), the trigger control circuit board (212) controls the wireless signal transmitter (213) to send an alarm signal to a controller of the operating console (101); When the movable switch spring (223) contacts the fixed switch terminal (224), the alarm (214) is triggered to turn on.

7. The supercritical fluid foaming shoe material production equipment with a smooth surface according to claim 1, characterized in that: The movable mold assembly comprises a movable mold (201) arranged opposite to the fixed mold (203); The limiting convex strip (210) is provided with an electric telescopic device fixedly installed between the limiting convex strip (210) and the operating table (101), and the electric telescopic device is also fixedly installed between the limiting convex strip (210) and the operating table (101) via a fastening structure.

8. The supercritical fluid foaming shoe material production equipment with a smooth surface according to claim 1, characterized in that: The injection nozzle of the screw injection molding machine (102) is sealed and inserted into the feed port of the fixed mold (203).

9. The production process of a supercritical fluid foaming shoe material production equipment with a smooth surface according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1, installing and fixing the movable mold assembly and the fixed mold assembly in the mold component between the operating table (101) and the support frame (103) through a fastening structure; S2. The anti-rotation component in the fastening structure can monitor the tightening degree of the fastening screw (206) in real time; S3, extruding the hot-melt polymer into the cavity of the mold component after mold closing by means of a screw injection molding machine (102); S4, filling the mold component with supercritical fluid; S5, the supercritical fluid diffuses into the polymer and reaches a saturated state, forming a polymer / gas homogeneous system; S6, opening the mold component to release the pressure of the polymer / gas homogeneous system for foaming, thereby obtaining a primary product of the supercritical fluid foamed shoe material; S7, cutting the pre-finished foamed shoe material to obtain a finished foamed shoe material.

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