Continuous extrusion type processing method and equipment for foamed profile

Abstract

The invention provides a continuous extrusion type processing method of a foamed profile. The continuous extrusion type processing method comprises the following steps: 1) adding raw material particles required by foaming into an extruder; (2) raw material particles needed by foaming are plasticized in an extruder and evenly mixed, then a foaming profile is extruded from an extrusion die head at the pressure larger than the supercritical pressure, the foaming profile passes through an up-down rolling type demolding forming die assembly, and the up-down rolling type demolding forming die assembly comprises a plurality of sets of forming dies; the foaming profiles at the corresponding positions are sealed in mold forming cavities by each group of forming molds, and the foaming profiles are foamed and expanded in the forming cavities until the forming cavities are filled with foaming bodies and then are cooled and shaped into finished products; (3) the forming mold is normally opened in the conveying direction of the conveying belt, and the foaming profile is continuously led out in the mold opening direction along with the forming mold in the mold closing state; and the forming efficiency is directly improved.

Description

Technical Field

[0001] The invention relates to the technical field of plastic extrusion, and in particular to a continuous extrusion processing method and equipment for foamed profiles. Background Art

[0002] Traditional injection molding foaming is limited by the structure of the injection molding machine and the runner structure of the mold. It can never break through the 2-fold foaming ratio and is prone to surface texture defects. Another high-ratio foaming method is to pre-blend and granulate the foaming materials, including the cross-linking agent and the foaming agent, and inject them into the mold at a temperature below 120°C. Then, the mold is heated to 210°C for more than 10 minutes, the mold is opened for foaming, and then the shape is fixed. However, this high-ratio foaming requires shaping outside the mold, which is dimensionally unstable and time-consuming.

[0003] China application publication number CN 115466515 A, application publication date is December 13, 2022, discloses a method for preparing silicone rubber foam material by extrusion foaming, the method comprising putting a material into a screw extruder for extrusion; during the extrusion process of the material in the screw extruder, supercritical carbon dioxide is injected into the material, and pre-crosslinking is performed, and the extruded foaming material is vulcanized and molded to obtain foamed silicone rubber; a method for preparing silicone rubber foam material by extrusion foaming of the present invention, only supercritical carbon dioxide is used as a foaming agent, and no other foaming agent is added, so as to achieve the purpose of safety and environmental protection; by adding supercritical carbon dioxide to silicone rubber during the extrusion process of the screw extruder, dynamic and sufficient mixing is achieved to ensure the uniformity of foaming; at the same time, by controlling the amount of supercritical carbon dioxide added, the foaming ratio can be controlled, so that the density of the product is controllable and the precision is high, thereby continuously producing extruded silicone rubber foam sheets, or preparing foamed products by thermal curing molding, without pollutant emissions, and realizing green production. The defects of the prior art are: low molding efficiency, which needs to be improved urgently. Summary of the invention

[0004] Based on this, the object of the present invention is to provide a continuous extrusion processing method and equipment for foamed profiles with high molding efficiency.

[0005] The present invention provides a continuous extrusion processing method for a foamed profile, comprising the following steps:

[0006] 1) Add the raw material particles required for foaming into the extruder;

[0007] 2) After the raw material particles required for foaming are plasticized and uniformly mixed in the extruder, a foaming profile is extruded from the extrusion die head at a pressure greater than the supercritical pressure. The foaming profile passes through a molding die assembly with an upper and lower rolling demolding method. The molding die assembly with an upper and lower rolling demolding method includes multiple sets of molding dies. Each set of molding dies seals the foaming profile at a corresponding position in a molding cavity of the mold. The foaming profile foams and expands in the molding cavity until the foam fills the molding cavity and then cools and shapes into a finished product;

[0008] 3) The forming mold opens normally along the conveying direction of the conveyor belt, and the foamed profile is continuously led out in the opening direction along with the forming mold in the mold closing state;

[0009] 4) A series of linearly connected finished products are transferred to the next processing step.

[0010] Preferably, the extruder is configured as a multi-channel extruder.

[0011] Preferably, the traction device is configured as a traction cutting device.

[0012] The present invention also provides a continuous extrusion device for a foamed profile, comprising an extruder and a molding die assembly; the molding die assembly comprises an upper mold conveying structure and a lower mold conveying structure, and a mold-closing molding area is formed between the upper mold conveying structure and the lower mold conveying structure;

[0013] The upper mold conveying structure includes an upper annular circulating conveyor belt and a plurality of upper molds that are orderly and evenly distributed along the circumference of the upper annular circulating conveyor belt, and the lower mold conveying structure includes a lower annular circulating conveyor belt and a plurality of lower molds that are orderly and evenly distributed along the circumference of the lower annular circulating conveyor belt; the upper annular circulating conveyor belt and the lower annular circulating conveyor belt located in the mold closing and molding area have the same running direction;

[0014] An upper molding cavity is arranged on the side of the upper mold close to the lower mold, and a lower molding cavity is arranged on the side of the lower mold close to the upper mold. A foam molding cavity is formed after the upper mold and the lower mold are combined, and a glue injection channel is formed on the side of the foam molding cavity close to the extrusion die head of the extruder.

[0015] Preferably, the upper die comprises an upper die core, a first positioning seat, a first drive motor, and a first buffer guide rod. The upper die core is provided with the upper molding cavity. The first drive motor is fixedly mounted on one side of the first positioning seat. The power output end of the first drive motor passes through the first positioning seat and is connected to the upper die core. The upper die core is provided with first buffer guide rods passing through the first positioning seat on both sides opposite to the first positioning seat. The upper die core is provided with an upper glue injection channel on the side close to the extrusion die head.

[0016] The lower mold includes a lower mold core, a second positioning seat, a second drive motor, and a second buffer guide rod. The lower mold core is provided with the lower molding cavity. The second drive motor is fixedly installed on one side of the second positioning seat. The power output end of the second drive motor passes through the second positioning seat and is connected to the lower mold core. The lower mold core is close to the second positioning seat. Both sides of the second mold core are provided with second buffer guide rods that pass through the second positioning seat. The lower mold core is close to the extrusion die head. A lower glue injection channel is formed; the upper glue injection channel and the lower glue injection channel are molded together to form a glue injection channel.

[0017] Preferably, the lower mold core and the upper mold core are both provided with exhaust holes connected to the foaming molding cavity.

[0018] Preferably, the lower mold core forms a first temperature regulating chamber around the lower molding cavity, and the first temperature regulating chamber is connected to the insulation liquid storage chamber through a pipeline; the upper mold core forms a second temperature regulating chamber around the upper molding cavity, and the second temperature regulating chamber is connected to the temperature regulating liquid storage chamber through a pipeline.

[0019] Preferably, the extrusion die head comprises a front upper die body, a rear upper die body, a front lower die body, a rear lower die body, an upper die lip and an adjusting slider, the rear upper die body is correspondingly arranged on the upper part of the rear lower die body, the front lower die body is correspondingly arranged on the side of the rear lower die body close to the discharge port, the front upper die body is correspondingly arranged on the side of the rear upper die body close to the discharge port and is located above the front lower die body, the front upper die body and the rear upper die body have an upper flow channel together, the front lower die body and the rear lower die body have a lower flow channel together, and the rear upper die body and the rear lower die body have a main flow channel together; the upper flow channel inlet, the lower flow channel inlet and the main flow channel inlet are arranged on the same side; the main flow channel, the upper flow channel and the lower flow channel are all spread out from the middle to the left and right sides in a hanger-like manner;

[0020] The upper die lip is arranged above the front lower die body and its upper part is connected to the front upper die body; a mounting groove for accommodating the adjusting slider is provided on the side of the rear upper die body close to the rear lower die body, and the adjusting slider is correspondingly arranged in the mounting groove; the upper die lip and the front lower die body have a composite flow channel together; an upper groove is formed on the side of the upper die lip close to the inlet of the front lower die body, and a front composite buffer space with a cross-section of an obtuse triangle that gradually increases and then gradually decreases from the feeding side to the discharging side is formed between the inner groove wall of the upper groove and the front lower die body; the upper flow channel, the lower flow channel and the main flow channel are all connected to the front composite buffer space;

[0021] An extrusion section structure is formed on one side where the main channel is connected to the composite channel; the extrusion section structure includes a first horizontal extrusion section and a second sunken horizontal extrusion section; the adjusting slider is correspondingly arranged at the transition between the first horizontal extrusion section and the second sunken horizontal extrusion section to form a bending transition section; the second sunken horizontal extrusion section is located between the adjusting slider and the front composite buffer space and is successively formed with a first protrusion and a second protrusion on a side facing the rear lower mold body; the width distance of the bending transition section is smaller than the width distance of the first horizontal extrusion section and the second sunken horizontal extrusion section; a first teardrop-shaped feed port is formed at the connection between the main channel and the first horizontal extrusion section.

[0022] Preferably, a first heater is provided at a position of the front upper mold body corresponding to the upper flow channel; a second heater is provided at a position of the rear upper mold body corresponding to the upper flow channel; a third heater is provided at a position of the front lower mold body corresponding to the lower flow channel; and a fourth heater is provided at a position of the rear lower mold body corresponding to the lower flow channel.

[0023] Preferably, a traction device is provided at the discharge end of the mold-clamping molding zone, and the traction device is configured as a traction cutting device.

[0024] The beneficial effects of the invention are as follows: the foamed profile passes through a molding mold assembly with up and down rolling demolding, and each group of molding molds seals the foamed profile at the corresponding position in the mold molding cavity for foaming and expansion until the foam fills the molding cavity and then cools and shapes it into a finished product. The finished product is in the shape of a linearly connected string, which directly improves the molding efficiency compared to single-piece molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is the front view of the present invention.

[0026] Figure 2 Schematic diagram of the relative structural relationship between the upper die and the lower die.

[0027] Figure 3 A cross-sectional view of the extrusion die.

[0028] The accompanying drawings are marked as follows: extruder 10, lower die 11, lower annular circulating conveyor belt 12, upper annular circulating conveyor belt 13, upper die 14, traction device 15, finished product 16, extrusion die head 17, molding die assembly 18, lower die conveying structure 19, mold clamping molding area 20, upper die conveying structure 21, glue injection channel 22, second drive motor 23, second buffer guide rod 24, first temperature adjustment chamber 25, foaming molding chamber 26, second temperature adjustment chamber 27, first positioning seat 29, first drive motor 30, first buffer guide rod 28, exhaust hole 31, second positioning seat 32, pipeline 33, front upper mold body 34, rear Upper mold body 35, front lower mold body 36, rear lower mold body 37, upper runner 38, lower runner 39, main runner 40, upper runner inlet 41, lower runner inlet 42, main runner inlet 43, upper mold lip 44, adjusting slider 45, composite runner 46, upper groove 47, front composite buffer space 48, first horizontal extrusion section 49, second sunken horizontal extrusion section 50, bending transition section 51, first raised portion 52, second raised portion 53, first teardrop-shaped inlet 54, first heater 55, second heater 56, third heater 57, fourth heater 58, upper mold core 60, lower mold core 61. DETAILED DESCRIPTION

[0029] In order to further understand the characteristics, technical means and specific purposes and functions of the invention, the invention is further described in detail below in conjunction with specific implementation methods and drawings.

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 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 the invention can be understood according to specific circumstances.

[0031] The present invention provides a continuous extrusion processing method for a foamed profile, comprising the following steps:

[0032] 1) Add the raw material particles required for foaming into the extruder;

[0033] 2) After the raw material particles required for foaming are plasticized and uniformly mixed in the extruder, a foaming profile is extruded from the extrusion die head at a pressure greater than the supercritical pressure. The foaming profile passes through a molding die assembly with an upper and lower rolling demolding method. The molding die assembly with an upper and lower rolling demolding method includes multiple sets of molding dies. Each set of molding dies seals the foaming profile at a corresponding position in a molding cavity of the mold. The foaming profile foams and expands in the molding cavity until the foam fills the molding cavity and then cools and shapes into a finished product;

[0034] 3) The forming mold opens normally along the conveying direction of the conveyor belt, and the foamed profile is continuously led out in the opening direction along with the forming mold in the mold closing state;

[0035] 4) A series of linearly connected finished products 16 are transferred to the next processing step.

[0036] Preferably, the extruder is configured as a multi-channel extruder.

[0037] Preferably, the traction device is configured as a traction cutting device.

[0038] Reference Figure 1-3 The present invention also provides a continuous extrusion device for a foamed profile, including an extruder 10 and a molding die assembly 18; the molding die assembly 18 includes an upper die conveying structure 21 and a lower die conveying structure 19, and a mold forming area 20 is formed between the upper die conveying structure 21 and the lower die conveying structure 19; the upper die conveying structure 21 includes an upper annular circulating conveyor belt 13 and a plurality of upper dies 14 orderly and evenly distributed along the circumference of the upper annular circulating conveyor belt 13, and the lower die conveying structure 19 includes a lower annular circulating conveyor belt 12 and A plurality of lower molds 11 are orderly and evenly distributed along the circumference of the lower annular circulating conveyor belt 12; the upper annular circulating conveyor belt 13 and the lower annular circulating conveyor belt 12 located in the mold closing molding area 20 have the same running direction; the upper mold 14 is provided with an upper molding cavity on the side close to the lower mold 11, and the lower mold 11 is provided with a lower molding cavity on the side close to the upper mold 14; a foaming molding cavity 26 is formed after the upper mold 14 and the lower mold 11 are closed, and a glue injection channel 22 is formed in the foaming molding cavity 26 on the side close to the extrusion die head 17 of the extruder 10.

[0039] The upper mold 14 includes an upper mold core 60, a first positioning seat 29, a first drive motor 30, and a first buffer guide rod 28. The upper mold core 60 is provided with an upper molding cavity. The first drive motor 30 is fixedly installed on one side of the first positioning seat 29. The power output end of the first drive motor 30 passes through the first positioning seat 29 and is connected to the upper mold core 60. The upper mold core 60 is close to the first positioning seat 29. Both sides of the first buffer guide rod 28 are provided on the opposite sides of the first positioning seat 29. The upper mold core 60 is close to the extrusion die head 17. The side is formed with an upper glue injection channel; the first positioning seat 29 is fixedly installed on the upper annular circulating conveyor belt 13.

[0040] The lower mold 11 includes a lower mold core 61, a second positioning seat 32, a second drive motor 23, and a second buffer guide rod 24. The lower mold core 61 is provided with a lower molding cavity. The second drive motor 23 is fixedly mounted on one side of the second positioning seat 32. The power output end of the second drive motor 23 passes through the second positioning seat 32 and is connected to the lower mold core 61. The lower mold core 61 is provided with a second buffer guide rod 24 that passes through the second positioning seat 32 on both sides of the lower mold core 61 that are close to the second positioning seat 32. The lower mold core 61 is formed with a lower glue injection channel on the side close to the extrusion die head 17. The upper glue injection channel and the lower glue injection channel are molded together to form a glue injection channel 22. The second positioning seat 32 is fixedly mounted on the lower annular circulating conveyor belt 12.

[0041] The lower mold core 61 and the upper mold core 60 are both provided with exhaust holes 31 communicating with the foaming molding cavity 26. The lower mold core 61 and the upper mold core 60 are provided with control valves at positions corresponding to the exhaust holes 31.

[0042] The lower mold core 61 forms a first temperature regulating chamber 25 around the lower molding cavity, and the first temperature regulating chamber 25 is connected to the insulation liquid storage chamber through a pipeline 33; the upper mold core 60 forms a second temperature regulating chamber 27 around the upper molding cavity, and the second temperature regulating chamber 27 is connected to the temperature regulating liquid storage chamber through a pipeline.

[0043] When closing the mold, the first drive motor 30 causes the upper mold core 60 to move toward the lower mold core 61 , and the second drive motor 23 causes the lower mold core 61 to move toward the upper mold core 60 until the upper mold core 60 and the lower mold core 61 are closed to form a foaming molding cavity 26 .

[0044] Preferably, the extrusion die head 11 includes a front upper die body 34, a rear upper die body 35, a front lower die body 36, a rear lower die body 37, an upper die lip 44 and an adjusting slider 45, the rear upper die body 35 is correspondingly arranged on the upper part of the rear lower die body 37, the front lower die body 36 is correspondingly arranged on the side of the rear lower die body 37 close to the discharge port, the front upper die body 34 is correspondingly arranged on the side of the rear upper die body 35 close to the discharge port and is located above the front lower die body 36, the front upper die body 34 and the rear upper die body 35 have an upper flow channel 38 together, the front lower die body 36 and the rear lower die body 37 have a lower flow channel 39 together, and the rear upper die body 35 and the rear lower die body 37 have a main flow channel 40 together; the upper flow channel inlet 41, the lower flow channel inlet 42 and the main flow channel inlet 43 are arranged on the same side; the main flow channel 40, the upper flow channel 38 and the lower flow channel 39 are all spread out from the middle to the left and right sides in a hanger-like manner;

[0045] The upper die lip 44 is arranged above the front lower die body 36 and connected to the front upper die body 34 at its upper part; a mounting groove for accommodating the adjusting slider 45 is provided on the side of the rear upper die body 35 close to the rear lower die body 37, and the adjusting slider 45 is correspondingly arranged in the mounting groove; the upper die lip 44 and the front lower die body 36 have a composite flow channel 46 together; an upper groove 47 is formed on the side of the upper die lip 44 close to the feeding port of the front lower die body 36, and a front composite buffer space 48 with a cross-section of an obtuse triangle that gradually increases and then gradually decreases from the feeding side to the discharging side is formed between the inner groove wall of the upper groove 47 and the front lower die body 36; the upper flow channel 46 is provided on the upper die lip 44 and the front lower die body 36; The upper flow channel 38, the lower flow channel 39 and the main flow channel 40 are all connected with the front composite buffer space 48; by forming the composite buffer space 48, after entering the composite flow channel 46 from the upper flow channel 38, the lower flow channel 39 and the main flow channel 40, there is a buffer mixing process that gradually increases and then gradually decreases. The material is evenly divided to both sides in the flow channel, ensuring that the material in the composite buffer space 48 flows evenly in its width direction, improving the uniformity of mixing and then extrusion, thereby ensuring the quality of the product. This structure can make the thickness of the blanks at different positions different, so that after foaming and molding in the mold, the thickness is uniform and the foaming ratio is consistent.

[0046] An extrusion section structure is formed on one side where the main channel 40 is connected to the composite channel 46; the extrusion section structure includes a first horizontal extrusion section 49 and a second sunken horizontal extrusion section 50; the adjusting slider 45 is correspondingly arranged at the transition between the first horizontal extrusion section 49 and the second sunken horizontal extrusion section 50 to form a bending transition section 51; the second sunken horizontal extrusion section 50 is located between the adjusting slider 45 and the front composite buffer space 48 and is sequentially formed with a first protrusion 52 and a second protrusion 53 on a side facing the rear lower mold body 37; the width distance of the bending transition section 51 is smaller than the width distance of the first horizontal extrusion section 49 and the second sunken horizontal extrusion section 50; the present invention provides an adjusting slider 45, on the one hand, to facilitate the replacement of the damaged adjusting slider 45, thereby ensuring the quality of the product, and on the other hand, the width of the bending transition section can be adjusted by replacing different types of adjusting sliders 45, so that the material flowing into this position can achieve different damping, and when entering the second sunken horizontal extrusion section 50, the cooperation with the first protrusion 52 and the second protrusion 53 makes the material flowing through this area more uniform, thereby further ensuring the quality of the product. A first water drop-shaped feed inlet 54 is formed at the connection between the main channel 40 and the first horizontal extrusion section 49, so that the main channel 40 gradually decreases from the middle to both ends, and the cross-sectional area of ​​the entire channel also gradually decreases, shortening the residence time of the material at both ends of the channel and extending the continuous production cycle.

[0047] Preferably, the front upper mold body 34 is provided with a first heater 55 at a position corresponding to the upper flow channel 38; the rear upper mold body 35 is provided with a second heater 56 at a position corresponding to the upper flow channel 38; the front lower mold body 36 is provided with a third heater 57 at a position corresponding to the lower flow channel 39; and the rear lower mold body 37 is provided with a fourth heater 58 at a position corresponding to the lower flow channel 39. The process temperature requirements of the material in each flow channel are ensured, thereby ensuring product quality.

[0048] Preferably, a traction device 15 is provided at the discharge end of the mold forming area 20, and the traction device 15 is configured as a traction and cutting device. On the one hand, the foamed profile can be pulled out by the traction device 15, and on the other hand, the string-shaped finished product can be cut by the traction and cutting device, thereby further improving production efficiency.

[0049] The operation steps of this embodiment are:

[0050] 1) Adding raw material particles required for foaming into an extruder 10;

[0051] 2) The raw material particles required for foaming are plasticized and uniformly mixed in the extruder 10 and then extruded from the extrusion die 11 into the mold forming area 20 at a pressure greater than the supercritical pressure;

[0052] 3) The upper mold and the lower mold at each corresponding position seal the foam profile at the corresponding position in the foam molding cavity 26. The foam profile foams and expands in the foam molding cavity 26 until the foam fills the molding cavity and then cools and shapes into a finished product. The upper mold and the lower mold at each corresponding position are naturally opened along the conveying direction of the conveyor belt;

[0053] 4) The foamed profile is continuously drawn out in the mold opening direction along with each set of upper and lower molds in the mold closing state, so that a series of linearly connected finished products 16 are pulled out in sequence;

[0054] 5) Repeat this process.

[0055] In this embodiment, the foamed profile passes through a molding mold assembly with up and down rolling demolding. Each group of molding molds seals the foamed profile at the corresponding position in the mold molding cavity for foaming and expansion until the foam fills the molding cavity and then cools and shapes it into a finished product. The finished product is in the shape of a linearly connected string, which directly improves the molding efficiency.

[0056] The above-mentioned embodiment only expresses one implementation method of the invention, and its description is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the inventive concept, which all belong to the protection scope of the invention. Therefore, the protection scope of the invention patent shall be based on the attached claims.

Claims

1. A continuous extrusion processing method for a foamed profile, characterized in that: The following steps are involved: 1) Add the raw material particles required for foaming into the extruder; 2) After the raw material particles required for foaming are plasticized and uniformly mixed in the extruder, a foaming profile is extruded from the extrusion die head at a pressure greater than the supercritical pressure. The foaming profile passes through a molding die assembly with an upper and lower rolling demolding method. The molding die assembly with an upper and lower rolling demolding method includes multiple sets of molding dies. Each set of molding dies seals the foaming profile at a corresponding position in a molding cavity of the mold. The foaming profile foams and expands in the molding cavity until the foam fills the molding cavity and then cools and shapes into a finished product; 3) The forming mold opens normally along the conveying direction of the conveyor belt, and the foamed profile is continuously led out in the opening direction along with the forming mold in the mold closing state; 4) A linearly connected string of finished products (16) is transferred to the next processing step.

2. The continuous extrusion processing method of a foamed profile according to claim 1, characterized in that: The extruder is configured as a multi-channel extruder.

3. The continuous extrusion processing method of a foamed profile according to claim 1, characterized in that: The traction device is configured as a traction cutting device.

4. A continuous extrusion device for foamed profiles, characterized in that: It includes an extruder (10) and a molding die assembly (18); The molding die assembly (18) comprises an upper die conveying structure (21) and a lower die conveying structure (19), and a mold-clamping molding area (20) is formed between the upper die conveying structure (21) and the lower die conveying structure (19); The upper mold conveying structure (21) comprises an upper annular circulating conveyor belt (13) and a plurality of upper molds (14) arranged in an orderly and uniform manner along the circumference of the upper annular circulating conveyor belt (13); the lower mold conveying structure (19) comprises a lower annular circulating conveyor belt (12) and a plurality of lower molds (11) arranged in an orderly and uniform manner along the circumference of the lower annular circulating conveyor belt (12); the upper annular circulating conveyor belt (13) and the lower annular circulating conveyor belt (12) located in the mold closing and molding area (20) have the same running direction; An upper molding cavity is arranged on the side of the upper mold (14) close to the lower mold (11), and a lower molding cavity is arranged on the side of the lower mold (11) close to the upper mold (14). A foam molding cavity (26) is formed when the upper mold (14) and the lower mold (11) are combined, and a glue injection channel (22) is formed on the side of the foam molding cavity (26) close to the extrusion die head (17) of the extruder (10).

5. The continuous extrusion device for foamed profiles according to claim 4, characterized in that: The upper mold (14) comprises an upper mold core (60), a first positioning seat (29), a first drive motor (30), and a first buffer guide rod (28); the upper mold core (60) is provided with the upper molding cavity; the first drive motor (30) is fixedly mounted on one side of the first positioning seat (29); the power output end of the first drive motor (30) passes through the first positioning seat (29) and is connected to the upper mold core (60); the first buffer guide rod (28) passing through the first positioning seat (29) is provided on both sides of the upper mold core (60) facing the first positioning seat (29); an upper glue injection channel is formed on the side of the upper mold core (60) facing the extrusion die head (17); The lower mold (11) comprises a lower mold core (61), a second positioning seat (32), a second drive motor (23), and a second buffer guide rod (24); the lower mold core (61) is provided with the lower molding cavity; the second drive motor (23) is fixedly mounted on one side of the second positioning seat (32); the power output end of the second drive motor (23) passes through the second positioning seat (32) and is connected to the lower mold core (61); the lower mold core (61) is provided with second buffer guide rods (24) passing through the second positioning seat (32) on opposite sides thereof close to the second positioning seat (32); a lower glue injection channel is formed on the side of the lower mold core (61) close to the extrusion die head (17); and the upper glue injection channel and the lower glue injection channel are molded together to form a glue injection channel (22).

6. The continuous extrusion equipment for foamed profiles according to claim 5, characterized in that: The lower mold core (61) and the upper mold core (60) are both provided with an exhaust hole (31) which is in communication with the foaming molding cavity (26).

7. The continuous extrusion equipment for foamed profiles according to claim 6, characterized in that: The lower mold core (61) forms a first temperature regulating chamber (25) around the lower molding chamber, and the first temperature regulating chamber (25) is connected to the temperature-insulating liquid storage chamber via a pipeline (33); the upper mold core (60) forms a second temperature regulating chamber (27) around the upper molding chamber, and the second temperature regulating chamber (27) is connected to the temperature-insulating liquid storage chamber via a pipeline.

8. A continuous extrusion device for foamed profiles according to any one of claims 4 to 7, characterized in that: The extrusion die head (11) comprises a front upper die body (34), a rear upper die body (35), a front lower die body (36), a rear lower die body (37), an upper die lip (44) and an adjusting slider (45); the rear upper die body (35) is correspondingly arranged on the upper part of the rear lower die body (37); the front lower die body (36) is correspondingly arranged on a side of the rear lower die body (37) close to the discharge port; the front upper die body (34) is correspondingly arranged on a side of the rear upper die body (35) close to the discharge port and is located on the front lower die body (36). The front upper mold body (34) and the rear upper mold body (35) have an upper flow channel (38) together, the front lower mold body (36) and the rear lower mold body (37) have a lower flow channel (39) together, and the rear upper mold body (35) and the rear lower mold body (37) have a main flow channel (40) together; the upper flow channel inlet (41), the lower flow channel inlet (42) and the main flow channel inlet (43) are arranged on the same side; the main flow channel (40), the upper flow channel (38) and the lower flow channel (39) are all arranged in a hanger-like manner from the middle to the left and right sides; The upper die lip (44) is arranged above the front lower die body (36) and is connected to the front upper die body (34) at its upper part; a mounting groove for accommodating the adjusting slider (45) is provided on the side of the rear upper die body (35) close to the rear lower die body (37), and the adjusting slider (45) is correspondingly arranged in the mounting groove; the upper die lip (44) and the front lower die body (36) have a composite flow channel (46) together; an upper groove (47) is formed on the side of the upper die lip (44) close to the feed port of the front lower die body (36), and a front composite buffer space (48) with a cross-section gradually increasing and then decreasing in the shape of an obtuse triangle is formed between the inner groove wall of the upper groove (47) and the front lower die body (36) from the feed side to the discharge side; the upper flow channel (38), the lower flow channel (39), and the main flow channel (40) are all connected to the front composite buffer space (48); An extrusion section structure is formed on one side where the main channel (40) is connected to the composite channel (46); the extrusion section structure includes a first horizontal extrusion section (49) and a second sunken horizontal extrusion section (50); the adjusting slider (45) is correspondingly arranged at the transition between the first horizontal extrusion section (49) and the second sunken horizontal extrusion section (50) to form a bending transition section (51); the second sunken horizontal extrusion section (50) is located between the adjusting slider (45) and the front composite buffer space (48) and is formed with a first protrusion (52) and a second protrusion (53) in sequence on a side facing the rear lower mold body (37); the width distance of the bending transition section (51) is smaller than the width distance of the first horizontal extrusion section (49) and the second sunken horizontal extrusion section (50); a first water drop-shaped feed inlet (54) is formed at the connection between the main channel (40) and the first horizontal extrusion section (49).

9. The continuous extrusion device for foamed profiles according to claim 8, characterized in that: A first heater (55) is arranged at a position of the front upper mold body (34) corresponding to the upper flow channel (38); a second heater (56) is arranged at a position of the rear upper mold body (35) corresponding to the upper flow channel (38); a third heater (57) is arranged at a position of the front lower mold body (36) corresponding to the lower flow channel (39); and a fourth heater (58) is arranged at a position of the rear lower mold body (37) corresponding to the lower flow channel (39).

10. The continuous extrusion equipment for foamed profiles according to claim 1, characterized in that: A traction device (15) is provided at the discharge end of the mold-clamping molding area (20), and the traction device (15) is configured as a traction and cutting device.

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