A multi-chamber foaming molding mold based on supercritical fluid gradient control

Abstract

The invention discloses a multi-chamber foaming molding mold based on supercritical fluid gradient regulation, relates to the field of foaming mold technology, and includes an adjustment table; and the adjustment table is specifically composed of a table, a top plate, and a hydraulic cylinder at the bottom of the top plate. By arranging a mold body and an injection port assembly on the adjustment table, a heat-conducting oil is used to heat a phase change material and then output it through a circulation channel formed by a first pipe nozzle. At the same time, the semi-ring body under the heating assembly can avoid the injection effect of the foaming fluid caused by the temperature difference of the injection port, and also change the diameter of the flow channel between multiple groups of combined templates to form a certain pressure gradient inside the combined template of the multiple chambers. By arranging the separation and wire mesh structure of the metal wire mesh, the heat-conducting metal forms a corresponding temperature gradient under the heat conductivity of the heat-absorbing material; by arranging the heat exchange component to cooperate with the mold body and the injection port assembly to form a circulation channel between the heat exchange fluid, the heat exchange efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of foaming moulds, in particular to a multi-chamber foaming mould based on supercritical fluid gradient regulation. Background Art

[0002] Traditional polymer foaming molding technologies, such as injection molding foaming and extrusion foaming, usually use chemical foaming agents or physical foaming agents to foam under a single pressure environment.

[0003] It is difficult to achieve different temperature gradients and pressure gradients for the mold at the same time using traditional methods. In order to meet the needs, it is often necessary to design complex cooling circuits inside the mold, which not only increases the design and manufacturing costs of the mold, but also increases the difficulty of maintaining the system. In addition, complex cooling systems require more energy to maintain their operation, resulting in increased energy consumption. At the same time, due to uneven cooling, longer cooling time may be required, further increasing energy consumption. Summary of the invention

[0004] Therefore, in order to solve the above-mentioned shortcomings, the present invention provides a multi-chamber foaming molding mold based on supercritical fluid gradient regulation.

[0005] The present invention is implemented by constructing a multi-chamber foaming molding mold based on supercritical fluid gradient regulation, the device includes an adjustment platform; and the adjustment platform is specifically composed of a platform and a top plate and a hydraulic cylinder at the bottom of the top plate;

[0006] The middle side of the top of the adjustment workbench is provided with a mold body; a material injection port assembly is fixedly provided on the side of the mold body; a heat exchange assembly with a temperature control function is fixedly provided on the side of the mold body; a liquid pump assembly is fixedly installed on the right side of the adjustment workbench by bolts; a control assembly is fixedly installed on the right side of the adjustment workbench by bolts;

[0007] The mold body specifically includes a fixed mold which is respectively installed on the top of the adjusting table body and the hydraulic cylinder at the top and bottom by bolts; a metal wire mesh is fixedly installed in the inner cavity of the fixed mold for fixing; a heat-absorbing material for heat conduction is arranged inside the metal wire mesh; a joint plate is fixedly installed at the groove on the side of the fixed mold by bolts, and two groups of joint plates are fixedly installed at the groove on the side of the fixed mold; the joint plate at the bottom of the inner side groove of the fixed mold is fixedly installed on the side of the heat-conducting metal by bolts, and the joint plate is vertical to the heat-conducting metal; a heat-resistant rubber strip for sealing is adhered to the U-shaped edge of the side of the heat-conducting metal; the joint plate at the top of the inner side groove of the fixed mold is fixedly installed on the side of the combined template by bolts; a first nozzle piece is fixedly installed on the side flow channel of the combined template.

[0008] Preferably, the first nozzle piece comprises a semi-ring body fixedly installed at the flow channel opening of the combined template by bolts, and a screw groove for installation and fixation is provided on the outer ring surface of the semi-ring body; liquid guide pieces are respectively plugged and fixedly installed at the upper and lower openings of the semi-ring body; a plug-in tube and a limiting ring are respectively provided at the upper and lower platforms of the semi-ring body, and the plug-in tube and the limiting ring are both plug-in and snap-fitted; the outer surfaces of the plug-in tube and the limiting ring are both corrugated.

[0009] Preferably, high heat-resistant rubber is adhered and fixedly provided on the annular inner wall of the semi-ring body, and the surface of the high heat-resistant rubber has a smooth structure; a flow channel with a diversion function is fixedly installed inside the semi-ring body; a memory alloy is fixedly installed in the flow channel by bolts, and a spherical body is provided at the top end of the memory alloy.

[0010] Preferably, the injection port assembly includes a second nozzle piece fixedly arranged inside the flow channel of the combined template, and the second nozzle piece has the same structure as the first nozzle piece; the surface of the high heat-resistant rubber in the second nozzle piece is an annular protrusion structure; the high heat-resistant rubber in the second nozzle piece is pressed and fixed with a limit material pipe; the limit material pipe is fixedly installed inside the heat-conducting sleeve; a gas guide piece is inserted into the side surface of the inner cavity of the heat-conducting sleeve; a heat-insulating sleeve with a protective function is fixedly installed on the outside of the heat-conducting sleeve; a coil ring is fixedly arranged on the outer bottom side of the heat-insulating sleeve by gluing; and a gas guide assembly is inserted into the side surface of the second nozzle piece on the right side of the fixed mold.

[0011] Preferably, the heat exchange assembly includes a heat exchange tube fixedly arranged inside the metal wire mesh; a diverter box for diverting flow is fixedly installed on the side of the heat exchange tube; a sensor with data collection function is fixedly installed on the top of the diverter box by bolts; a first diverter assembly is fixedly installed on the side of the diverter box; and a second diverter assembly is fixedly installed on the side of the injection port assembly.

[0012] Preferably, the first diversion component includes a telescopic tube plugged and fixedly installed at the side flow outlet of the diversion box; the telescopic tube is fixedly plugged and installed at the bottom flow outlet of the relay box; the top flow outlet of the relay box is plugged and fixed with a first diversion valve with a diversion function through a connecting pipe; the first diversion component and the second diversion component have the same overall structure, and the first diversion valve in the first diversion component and the second diversion component is connected to the liquid pump of the liquid pump component through a connecting pipe.

[0013] Preferably, the internal baffle block of the relay box is plugged and fixed to the end of the piston rod on the side of the pneumatic cylinder; and the second diverter valve is fixedly installed on the pressure relief port of the pneumatic cylinder body through a connecting pipe.

[0014] Preferably, the air guide component includes a detachable connecting pipe which is plugged and fixed inside the high heat-resistant rubber in the second pipe mouth piece; light sensors are fixedly installed on the upper and lower sides of the detachable connecting pipe body by bolts; a sealed air box is plugged and fixedly installed on the right side of the detachable connecting pipe; an air pressure sensor is fixedly installed on the top side of the connection between the sealed air box and the detachable connecting pipe; a heat exchanger is fixedly installed on the inside of the sealed air box; a reversing valve is plugged and installed on the top air port of the sealed air box through a connecting pipe; a fine-pore diaphragm is clamped and fixed at the connection between the left and right tube bodies of the detachable connecting pipe.

[0015] Preferably, the liquid pump assembly includes a thermally conductive oil tank fixedly installed on the side of the adjustment table by bolts, and a liquid pump and a diverter valve fixedly installed on the side of the thermally conductive oil tank for diversion; the heating element in the thermally conductive oil tank of the liquid pump assembly is fixedly connected to the control assembly through a cable.

[0016] Preferably, two groups of fixed molds and combined molds are arranged on the front side of the adjustment workbench and are symmetrically distributed up and down; the metal wire mesh is in a rectangular frame structure, and the inside of the metal wire mesh is provided with the same number of separating wire meshes as the heat-resistant rubber strips, and the gaps between the multiple groups of separating wire meshes are set to be the same as the width of the heat-conducting metal.

[0017] Preferably, the liquid guide member and the gas guide member are both composed of a one-way valve and a connecting pipe assembly; the metal wire mesh and the flow channel groove are both provided with heat-absorbing material, and the heat-absorbing material is specifically a phase change material; the flow channel inside the flow channel groove is in the shape of a flat semicircular arc.

[0018] The present invention has the following advantages: The present invention provides a multi-chamber foaming molding die based on supercritical fluid gradient control through improvement, which has the following improvements compared with the same type of equipment:

[0019] The multi-chamber foaming molding mold based on supercritical fluid gradient regulation described in the present invention is configured such that a mold body and an injection port assembly are arranged on an adjustment table, and a heat-conducting oil is used to heat a phase change material and then discharge it through a circulation channel formed by a first nozzle piece. At the same time, the semi-ring body under the heating assembly can avoid the injection effect of the foaming fluid caused by the temperature difference of the injection port, and also change the diameter of the flow channel between multiple groups of combined templates to form a certain pressure gradient inside the combined templates of the multiple chambers. By arranging a metal wire mesh partition and a wire mesh structure, the heat-conducting metal forms a corresponding temperature gradient under the thermal conductivity of the heat-absorbing material; a heat exchange component is arranged to cooperate with the mold body and the injection port assembly to form a circulation channel between the heat exchange fluids, thereby improving the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 The present invention Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0022] Figure 3 It is a schematic diagram of the exploded structure of the mold body of the present invention;

[0023] Figure 4 is a schematic diagram of the exploded structure of the first nozzle member of the present invention;

[0024] Figure 5 It is a schematic diagram of the axial structure of the injection port assembly of the present invention;

[0025] Figure 6 It is a schematic diagram of the cross-sectional structure of the injection port assembly of the present invention;

[0026] Figure 7 It is a schematic diagram of the axial structure of the heat exchange component of the present invention;

[0027] Figure 8 It is a schematic diagram of the axial structure of the first flow diversion component of the present invention;

[0028] Fig. 9 It is a schematic diagram of the axial structure of the gas guide assembly of the present invention;

[0029] Fig.10 It is a schematic diagram of the exploded structure of the gas guide component of the present invention.

[0030] Among them: adjustment table-1, mold body-2, injection port assembly-3, heat exchange assembly-4, liquid pump assembly-5, control assembly-6, fixed mold-21, metal wire mesh-22, heat absorbing material-23, joint plate-24, heat conductive metal-25, heat resistant rubber strip-26, combined template-27, first nozzle piece-28, semi-ring body-281, liquid guide piece-282, plug-in tube-283, limit collar-284, high heat resistant rubber-285, flow channel groove-286, memory alloy-287, second nozzle piece-31, limit material pipe-32 , heat-conducting sleeve -33, gas guide member -34, heat-insulating sleeve -35, coil ring -36, gas guide assembly -37, detachable connecting pipe -371, optical sensor -372, sealed gas box -373, air pressure sensor -374, heat exchange member -375, reversing valve -376, fine-pore diaphragm -377, heat exchange tube -41, diverter box -42, sensor -43, first diverter assembly -44, second diverter assembly -45, telescopic tube -441, relay box -442, first diverter valve -443, pneumatic cylinder -444, second diverter valve -445. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1 to Figure 10The principles and features of the present invention are described, and the examples given are only used to explain the present invention and are not used to limit the scope of the present invention. In the following paragraphs, the present invention is described in more detail by way of example with reference to the accompanying drawings. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to facilitate and clearly assist in explaining the purpose of the embodiments of the present invention.

[0032] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" 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 an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is an explanation of the embodiments of the present invention based on its overall structure.

[0034] Embodiment 1:

[0035] See also Figure 1 to Figure 10 The multi-chamber foaming molding mold based on supercritical fluid gradient regulation of the present invention includes an adjustment platform 1; and the adjustment platform 1 is specifically composed of a platform, a top plate, and a hydraulic cylinder at the bottom of the top plate.

[0036] A mold body 2 is arranged on the middle side of the top of the adjustment table 1; a material injection port assembly 3 is fixedly arranged on the side of the mold body 2; a heat exchange assembly 4 with a temperature control function is fixedly arranged on the side of the mold body 2; a liquid pump assembly 5 is fixedly installed on the right side of the adjustment table 1 by bolts; a control assembly 6 is fixedly installed on the right side of the adjustment table 1 by bolts; the liquid pump assembly 5 includes a thermal oil tank fixedly installed on the side of the adjustment table 1 by bolts and a liquid pump and a diverter valve fixedly installed on the side of the thermal oil tank for diversion; the heating component in the thermal oil tank of the liquid pump assembly 5 is fixedly connected to the control assembly 6 through a cable.

[0037] The mold body 2 specifically includes a fixed mold 21 which is respectively installed on the top of the adjusting workbench 1 and the hydraulic cylinder at the top and bottom by bolts; a metal wire mesh 22 for fixing is fixedly installed in the inner cavity of the fixed mold 21; a heat-absorbing material 23 for heat conduction is arranged inside the metal wire mesh 22; a joint plate 24 is fixedly installed at the side groove of the fixed mold 21 by bolts, and two groups of joint plates 24 are fixedly installed at the side groove of the fixed mold 21; the joint plate 24 at the bottom of the inner side groove of the fixed mold 21 is fixedly installed on the side of the heat-conducting metal 25 by bolts, and the joint plate 24 is vertical to the heat-conducting metal 25; a heat-resistant rubber strip 26 for sealing is adhered to the U-shaped edge of the side of the heat-conducting metal 25; the joint plate 24 at the top of the inner side groove of the fixed mold 21 is fixedly installed on the side of the combined template 27 by bolts; and a first nozzle piece 28 is fixedly installed on the side flow channel of the combined template 27.

[0038] The first nozzle piece 28 includes a semi-ring body 281 fixedly installed at the flow channel opening of the combined template 27 by bolts, and a screw groove for installation and fixation is provided on the outer ring surface of the semi-ring body 281; liquid guide members 282 are respectively plugged and fixedly installed at the upper and lower openings of the semi-ring body 281; plug-in tubes 283 and limiting collars 284 are respectively provided at the upper and lower platforms of the semi-ring body 281, and the plug-in tubes 283 and the limiting collars 284 are plug-in and snap-fitted; the outer surfaces of the plug-in tubes 283 and the limiting collars 284 are both corrugated; a high heat-resistant rubber 285 is glued and fixedly provided on the annular inner wall of the semi-ring body 281, and the surface of the high heat-resistant rubber 285 is a smooth structure; a flow channel 286 with a guiding function is fixedly installed inside the semi-ring body 281; a memory alloy 287 is fixedly installed in the flow channel 286 by bolts, and a spherical body is provided at the top end of the memory alloy 287.

[0039] The injection port assembly 3 includes a second nozzle piece 31 fixedly arranged inside the flow channel of the combined template 27, and the second nozzle piece 31 has the same structure as the first nozzle piece 28; the surface of the high heat-resistant rubber 285 in the second nozzle piece 31 is an annular protrusion structure; the high heat-resistant rubber 285 in the second nozzle piece 31 is pressed and fixed with a limit material pipe 32; the limit material pipe 32 is fixedly installed inside the heat-conducting sleeve 33; a gas guide piece 34 is inserted on the side of the inner cavity of the heat-conducting sleeve 33; a heat-insulating sleeve 35 with a protective function is fixedly installed on the outside of the heat-conducting sleeve 33; a coil ring 36 is fixedly provided on the outer bottom side of the heat-insulating sleeve 35 by gluing; and a gas guide assembly 37 is inserted on the side of the second nozzle piece 31 on the right side of the fixed mold 21.

[0040] The air guide component 37 includes a detachable connecting pipe 371 which is plugged and fixed inside the high heat-resistant rubber 285 in the second pipe outlet member 31; light sensors 372 are fixedly installed on the upper and lower sides of the tube body of the detachable connecting pipe 371 by bolts; a sealed air box 373 is plugged and fixedly installed on the right side of the detachable connecting pipe 371; an air pressure sensor 374 is fixedly installed on the top side of the connection between the sealed air box 373 and the detachable connecting pipe 371; a heat exchange component 375 is fixedly installed on the inside of the sealed air box 373, and the heat exchange component 375 is specifically composed of a heat exchange tube and a control valve; a reversing valve 376 is plugged and installed at the top air port of the sealed air box 373 through a connecting pipe, and the reversing valve 376 is connected to an external air pump device; a fine-pore diaphragm 377 is clamped and fixed at the connection between the left and right tube bodies of the detachable connecting pipe 371, and the fine-pore diaphragm 377 is used to block the outflow of the foam body.

[0041] Two groups of fixed molds 21 and a combined mold plate 27 are arranged on the front side of the adjustment workbench 1 in an upper and lower symmetrical distribution; the metal wire mesh 22 is in a rectangular frame structure, and the same number of dividing wire meshes as the heat-resistant rubber strips 26 are arranged inside the metal wire mesh 22, and the gaps between the multiple groups of dividing wire meshes are arranged to be the same as the width of the heat-conducting metal 25; the liquid guide 282 and the gas guide 34 are both composed of a one-way valve and a connecting pipe assembly; the metal wire mesh 22 and the flow channel groove 286 are both provided with heat-absorbing material 23, and the heat-absorbing material 23 is specifically a phase change material; the flow channel inside the flow channel groove 286 is in a right-angled semicircular arc shape.

[0042] Embodiment 2:

[0043] See also Figure 1 to Figure 10 , a multi-chamber foaming molding mold based on supercritical fluid gradient regulation of the present invention, compared with the first embodiment, this embodiment also includes: the heat exchange component 4 includes a heat exchange tube 41 fixedly arranged inside the metal wire mesh 22; a diverter box 42 for diversion is fixedly installed on the side of the heat exchange tube 41; a sensor 43 with data collection function is fixedly installed on the top of the diverter box 42 by bolts; a first diverter component 44 is fixedly installed on the side of the diverter box 42; a second diverter component 45 is fixedly installed on the side of the injection port component 3.

[0044] The first diverter assembly 44 includes a telescopic tube 441 which is plugged and fixedly installed on the side flow outlet of the diverter box 42; the telescopic tube 441 is fixedly plugged and installed at the bottom flow outlet of the relay box 442; a first diverter valve 443 with a diverting function is plugged and fixed to the top flow outlet of the relay box 442 through a connecting pipe; the first diverter assembly 44 and the second diverter assembly 45 have the same overall structure, and the first diverter valve 443 in the first diverter assembly 44 and the second diverter assembly 45 is connected to the liquid pump of the liquid pump assembly 5 through a connecting pipe; the internal flow blocking block of the relay box 442 is plugged and fixed to the end of the piston rod on the side of the pneumatic cylinder 444; the second diverter valve 445 is fixedly installed on the pressure relief port of the cylinder body of the pneumatic cylinder 444 through a connecting pipe.

[0045] The working principle of the multi-chamber foaming molding mold based on supercritical fluid gradient control is:

[0046] First, when using this device, first place the device in the working area, and then connect the device to an external power source to provide the device with the power required for operation;

[0047] Second, before foaming, the staff first checks the installation and use of the heat-conducting metal 25, the heat-resistant rubber strip 26 and the joint plate 24 on the side of the heat-conducting metal 25, and then assembles the combined mold plate 27 and the joint plate 24 for molding and installs them in the groove on the side of the fixed mold 21, and then fixes the first nozzle piece 28 and the second nozzle piece 31 on the middle flow channel and the side flow channel of the fixed mold 21 respectively through external bolts, and here the control component 6 controls the liquid pump component 5 to perform preheating action;

[0048] Third, after completing the assembly process of the mold body 2, the control component 6 controls the adjustment workbench 1 to drive the two groups of mold bodies 2 to perform a trial mold closing action. Here, the upper and lower semi-ring bodies 281 of the first nozzle member 28 and the second nozzle member 31 are combined to form a reflux channel, and then the staff inserts the limiting material pipe 32 in the injection port assembly 3 into the high heat-resistant rubber 285 in the second nozzle member 31, and then guides the heat-conducting oil into the flow channel 286 inside the semi-ring body 281 through the liquid guide member 282 of the second nozzle member 31. Here, the heat-conducting oil heats the phase change material inside the flow channel 286 through the circulating flow channel formed by the two groups of semi-ring bodies 281 and the liquid guide member 282 and then guides it out;

[0049] Fourth, the temperature inside the flow channel groove 286 increases, causing the memory alloy 287 to deform and push up the high heat-resistant rubber 285. Here, due to the convex structure on the surface of the high heat-resistant rubber 285 in the second nozzle piece 31, the high heat-resistant rubber 285 clamps the limiting material pipe 32, and uses the coil ring 36 to be energized to make it magnetically cooperate with the limiting material pipe 32 to complete the installation of the injection port assembly 3 as a whole; then the staff connects the external gas pipeline with the limiting material pipe 32, and presses gas to increase the internal pressure of the mold body 2 for air tightness detection, and at the same time, the heat-conducting oil is introduced into the diverter box 42 through the connecting pipe and the first diverter valve 443 through the liquid pump assembly 5, and the heat-absorbing material 23 inside the mold body 2 is heated through the heat exchange pipe 41; here, by pressing the external gas pipeline into the limiting material pipe 32, the staff can directly install the injection port assembly 3 as shown in FIG. Part of the gas enters the pneumatic cylinder 444 through the second diverter valve 445 to adjust the diameter of the flow channel inside the relay box 442, thereby changing the flow efficiency of the heat-conducting oil; at this time, the heat-absorbing material 23 inside the mold body 2 is transformed from solid to liquid after being heated, and the fluidity of the heat-absorbing material 23 is low due to the separation and mesh structure of the metal wire mesh 22, thereby forming a plurality of relatively independent heat-absorbing material 23 areas in the space surrounded by the heat-conducting metal 25 and the fixed mold 21. Here, since the temperature of the heat-conducting oil on the side of the introduction is absorbed by the heat-absorbing material 23, the heat-conducting oil between the introduction area and the outlet area will form a gradient threshold with a gradually decreasing temperature, and form a corresponding temperature gradient under the partition of the heat-resistant rubber strip 26 and the thermal conductivity of the heat-conducting metal 25;

[0050] Fifth, after the trial mold closing process is completed, the staff will check whether the heat-absorbing material 23 appears on the surface of the heat-conducting metal 25 when the pressure drops suddenly after the mold is removed by adjusting the workbench 1, so as to judge the sealing condition of the heat-resistant rubber strip 26; then, the two groups of mold bodies 2 are driven to close the mold again by adjusting the workbench 1, and the foaming fluid is introduced into the multi-chamber structure formed by the closing of the multiple groups of combined templates 27 through the external pipeline. Here, the heat-conducting oil is repeatedly introduced into the semi-ring body 281 by the liquid guide 282, and the temperature of the introduced heat-conducting oil can be controlled to adjust whether the memory alloy 287 in the semi-ring body 281 is deformed. Adjusting the lifting degree of the high heat-resistant rubber 285 and heating the installed semi-ring body 281 at the same time can avoid the injection effect of the foaming fluid caused by the temperature difference of the injection port. The deformation state of the high heat-resistant rubber 285 here can also change the diameter of the flow channel between the multiple groups of combined templates 27, so that after the internal pressure of the combined template 27 close to the injection port component 3 is gradually increased, the foaming fluid enters the combined template 27 on the other side through the small-diameter flow channel inside the adjusted semi-ring body 281, so that different injection pressures are formed inside the front and rear groups of combined templates 27, and then a certain pressure gradient is formed inside the multi-chamber combined template 27;

[0051] Sixth, during the injection process, the liquid pump assembly 5 is synchronously controlled to introduce the heat transfer oil into the diverter box 42 through the connecting pipe and the first diverter valve 443, and the heat absorbing material 23 inside the mold body 2 is heated through the heat exchange pipe 41 to cooperate with the foaming process; during the injection process, the internal space of the mold body 2 in the mold closing state is squeezed by the material introduced by the limit material pipe 32, and the pressure gradually increases. Here, the airflow in the internal space of the mold body 2 is guided out or blocked by controlling the reversing action of the reversing valve 376. In the blocked state, the reversing valve 376 can keep the pressure at a certain value when the material enters the cavity of the combined template 27. In the guided state, the reversing valve 376 can quickly relieve the pressure of the internal cavity of the combined template 27, and at the same time, the heat exchanger 375 inside the sealed air box 373 provides heat recovery for the regulated guided airflow; the light sensor 372 and the air pressure sensor 374 provide foreign matter and air pressure detection actions for the inside of the detachable connecting pipe 371.

[0052] The present invention provides a multi-chamber foaming molding mold based on supercritical fluid gradient regulation through improvement. By arranging the mold body 2 and the injection port assembly 3 on the adjustment workbench 1, the heat-conducting oil heats the phase change material and then discharges it through the circulation channel formed by the first nozzle piece. At the same time, the semi-ring body 281 installed under the heating device can avoid the injection effect of the foaming fluid caused by the temperature difference of the injection port, and also change the diameter of the flow channel between the multiple groups of combined templates 27 to form a certain pressure gradient inside the multi-chamber combined template 27. By arranging the separation and wire mesh structure of the metal wire mesh 22, the heat-conducting metal 25 forms a corresponding temperature gradient under the thermal conductivity of the heat-absorbing material 23; by arranging the heat exchange component 4 to cooperate with the mold body 2 and the injection port assembly 3 to form a circulation channel between the heat exchange fluid, thereby improving the heat exchange efficiency.

[0053] The above shows and describes the basic principles, main features and advantages of the present invention, and the standard parts used in the present invention can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0054] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multi-chamber foaming molding die based on supercritical fluid gradient control, comprising an adjustment platform (1); wherein the adjustment platform (1) is specifically composed of a platform, a top plate, and a hydraulic cylinder at the bottom of the top plate; A mold body (2) is arranged at the middle of the top of the adjustment platform (1); a material injection port assembly (3) is fixedly arranged at the side of the mold body (2); a heat exchange assembly (4) with a temperature control function is fixedly arranged at the side of the mold body (2); a liquid pump assembly (5) is fixedly installed at the right side of the adjustment platform (1) by means of bolts; and a control assembly (6) is fixedly installed at the right side of the adjustment platform (1) by means of bolts; Features: The mold body (2) specifically comprises a fixed mold (21) which is respectively installed on the top of the adjusting table (1) and the hydraulic cylinders at the top and bottom by bolts; a metal wire mesh (22) is fixedly installed in the inner cavity of the fixed mold (21) for fixing; a heat-absorbing material (23) for heat conduction is arranged inside the metal wire mesh (22); a joint plate (24) is fixedly installed at the groove on the side of the fixed mold (21) by bolts, and two sets of joint plates (24) are fixedly installed at the groove on the side of the fixed mold (21); The joint plate (24) at the bottom of the groove on the side of the mold (21) is fixedly mounted on the side of the heat-conducting metal (25) by means of bolts, and the joint plate (24) and the heat-conducting metal (25) are in a vertical state; a heat-resistant rubber strip (26) for sealing is adhered to the U-shaped edge on the side of the heat-conducting metal (25); the joint plate (24) at the top of the groove on the side of the fixed mold (21) is fixedly mounted on the side of the combined mold plate (27) by means of bolts; a first nozzle piece (28) is fixedly mounted on the side flow channel of the combined mold plate (27); The first nozzle member (28) comprises a semi-ring body (281) fixedly mounted on the flow channel opening of the combined template (27) by means of bolts, and a screw groove for mounting and fixing is provided on the outer ring surface of the semi-ring body (281); liquid guide members (282) are respectively plugged and fixedly mounted on the upper and lower openings of the semi-ring body (281); and an inserting tube (283) and a limiting ring (284) are respectively provided on the upper and lower platforms of the semi-ring body (281), and the inserting tube (283) and the limiting ring (284) are in the form of an inserting card. The insert tube (283) and the limiting ring (284) are both provided with corrugated outer surfaces; a high heat-resistant rubber (285) is fixedly provided on the annular inner wall of the semi-ring body (281), and the surface of the high heat-resistant rubber (285) is smooth; a flow channel (286) having a flow guiding function is fixedly provided inside the semi-ring body (281); a memory alloy (287) is fixedly provided in the flow channel of the flow channel (286) by means of bolts, and a spherical body is provided at the top end of the memory alloy (287).

2. According to claim 1, a multi-chamber foaming molding mold based on supercritical fluid gradient control, characterized in that: The injection port assembly (3) comprises a second nozzle piece (31) fixedly arranged inside the flow channel of the combined mold plate (27), and the second nozzle piece (31) has the same structure as the first nozzle piece (28); the surface of the high heat-resistant rubber (285) in the second nozzle piece (31) presents an annular protrusion structure; the high heat-resistant rubber (285) in the second nozzle piece (31) is pressed and fixedly provided with a limit material pipe (32); the limit material pipe (32) is fixedly installed inside the heat-conducting sleeve (33); a gas flow guide piece (34) is inserted and provided on the side surface of the inner cavity of the heat-conducting sleeve (33); a heat-insulating sleeve (35) with a protective function is fixedly installed on the outside of the heat-conducting sleeve (33); a coil ring (36) is fixedly provided on the outer bottom side of the heat-insulating sleeve (35) by gluing; and a gas guide assembly (37) is inserted and provided on the side surface of the second nozzle piece (31) on the right side of the fixed mold (21).

3. According to claim 2, a multi-chamber foaming molding mold based on supercritical fluid gradient control, characterized in that: The heat exchange assembly (4) comprises a heat exchange tube (41) fixedly arranged inside the metal wire mesh (22); a flow diversion box (42) for diversion is fixedly installed on the side of the heat exchange tube (41); a sensor (43) for data collection is fixedly installed on the top of the flow diversion box (42) by means of bolts; a first flow diversion assembly (44) is fixedly installed on the side of the flow diversion box (42); and a second flow diversion assembly (45) is fixedly installed on the side of the injection port assembly (3).

4. According to claim 3, a multi-chamber foaming molding die based on supercritical fluid gradient control, characterized in that: The first flow diversion component (44) comprises a telescopic tube (441) plugged and fixedly mounted on a flow outlet on the side of the flow diversion box (42); the telescopic tube (441) is fixedly plugged and mounted on a flow outlet on the bottom of the relay box (442); a first flow diversion valve (443) having a flow diversion function is plugged and fixedly mounted on the flow outlet on the top of the relay box (442) via a connecting pipe; the first flow diversion component (44) and the second flow diversion component (45) have the same overall structure, and the first flow diversion valves (443) in the first flow diversion component (44) and the second flow diversion component (45) are connected to the liquid pump of the liquid pump component (5) via a connecting pipe; the flow block inside the relay box (442) is plugged and fixedly mounted on the end of the piston rod on the side of the pneumatic cylinder (444); and a second flow diversion valve (445) is fixedly mounted on the pressure relief port of the cylinder body of the pneumatic cylinder (444) via a connecting pipe.

5. The multi-chamber foaming molding die based on supercritical fluid gradient control according to claim 4, characterized in that: The air guide assembly (37) comprises a detachable connecting pipe (371) plugged and fixedly arranged inside the high heat-resistant rubber (285) in the second pipe mouth piece (31); optical sensors (372) are fixedly installed on the upper and lower sides of the tube body of the detachable connecting pipe (371) by bolts; a sealed air box (373) is plugged and fixedly arranged on the right side of the detachable connecting pipe (371); an air pressure sensor (374) is fixedly arranged on the top side of the connection between the sealed air box (373) and the detachable connecting pipe (371); a heat exchange component (375) is fixedly arranged on the inside of the sealed air box (373); a reversing valve (376) is plugged and installed on the top air port of the sealed air box (373) through the connecting pipe; and a fine-pore diaphragm (377) is clamped and fixed at the connection between the left and right tube bodies of the detachable connecting pipe (371).

6. The multi-chamber foaming molding die based on supercritical fluid gradient control according to claim 5, characterized in that: The liquid pump assembly (5) comprises a thermal oil tank fixedly mounted on the side of the adjustment platform (1) by means of bolts, and a liquid pump and a diverter valve fixedly mounted on the side of the thermal oil tank for diversion; the heating element in the thermal oil tank of the liquid pump assembly (5) is fixedly connected to the control assembly (6) via a cable.

7. The multi-chamber foaming molding die based on supercritical fluid gradient control according to claim 6, characterized in that: The front side of the adjustment workbench (1) is provided with two groups of fixed molds (21) and a combined mold plate (27) which are symmetrically distributed in an upper and lower direction; the metal wire mesh (22) is in a rectangular frame structure, and the metal wire mesh (22) is provided with a number of separation wire meshes which is the same as the number of heat-resistant adhesive strips (26); the gaps between the multiple groups of separation wire meshes in the metal wire mesh (22) are set to be the same as the width of the heat-conducting metal (25).

8. The multi-chamber foaming molding die based on supercritical fluid gradient control according to claim 7, characterized in that: The liquid guide member (282) and the gas guide member (34) are both composed of a one-way valve and a connecting pipe assembly; a heat absorbing material (23) is arranged inside the metal wire mesh (22) and the flow channel groove (286), and the heat absorbing material (23) is specifically a phase change material; the flow channel inside the flow channel groove (286) is in the shape of a flat semicircular arc.

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