A co-extrusion die for an intermediate reinforced plate

Abstract

The present invention discloses a co-extrusion die for an intermediate reinforced plate, comprising a molding device, a speed regulating device, a temperature controlling device and a height adjusting mechanism. The molding device is connected to the speed regulating device, the temperature controlling device is tightly connected to the molding device, and the height adjusting mechanism is connected to the molding device. The molding device comprises an upper molding die, a lower molding die and a mold core. The upper molding die, the mold core and the lower molding die are arranged in sequence, and the two sides of the mold core are tightly connected to the upper molding die and the lower molding die respectively. After the melt is pressurized, it is transported to the molding device through a pipeline for extrusion molding. The melt flow rate is assisted by the speed regulating device, and the temperature of the three-layer melt is controlled by the temperature controlling device. The height adjusting mechanism is used for height adjustment to ensure the uniformity of the extruded material. The upper molding die, the lower molding die and the mold core perform extrusion molding of three different materials, thereby improving the efficiency of integrated molding.

Description

Technical Field

[0001] The invention relates to the technical field of reinforced plate co-extrusion dies, in particular to a middle reinforced plate co-extrusion die. Background Art

[0002] In recent years, with the continuous development of automation equipment, more and more industries have begun to introduce automated processing equipment. However, in the production process of reinforced acrylic sheets, a large amount of manual labor is still required to participate in the actual operation and assist in forming.

[0003] Acrylic sheets are typically produced manually or semi-mechanized. Extruded acrylic sheets offer high strength and impact resistance, and when used as outdoor sound barriers, they also offer bird strike protection. Reinforced acrylic sheets are typically produced using a casting process. During production, the reinforcement wires are manually drawn and placed into a prefabricated casting template. Acrylic adhesive is then filled into the mold, heated in a water bath, and dried until fully polymerized. The resulting sheet is then demolded and cooled to create the desired look.

[0004] However, the distributed operation of the transmission not only has many steps, but also requires a lot of manual participation. When producing reinforcing wire sheets of two different materials, partial pouring is required. After molding, the connection strength between the sheets is insufficient, which affects the subsequent service life. Summary of the Invention

[0005] The object of the present invention is to provide a co-extrusion die for an intermediate stiffened plate to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A co-extrusion die for an intermediate reinforced plate includes a forming device, a speed regulating device, a temperature control device and a height adjustment mechanism. The forming device is connected to the speed regulating device, the temperature control device is tightly connected to the forming device, and the height adjustment mechanism is connected to the forming device. The forming device includes an upper forming die, a lower forming die and a die core. The upper forming die, the die core and the lower forming die are arranged in sequence, and the two sides of the die core are tightly connected to the upper forming die and the lower forming die respectively.

[0008] After the melt is pressurized, it is transported to the molding device through a pipeline for extrusion molding. The melt flow rate is regulated with the assistance of a speed regulating device, and the temperature of the three-layer melt is controlled by a temperature control device. The height adjustment mechanism is used to adjust the height to ensure the uniformity of the extruded material. The upper molding die, lower molding die and mold core perform extrusion molding of three different materials to improve the efficiency of integrated molding.

[0009] Furthermore, a discharge flow channel is provided between the upper forming die and the lower forming die, a rib line flow channel is provided on the die core, and a rib line outlet is provided at the end of the rib line flow channel. The upper forming die includes an upper die body, and an upper melt flow channel is provided on the side of the upper die body close to the die core. The lower forming die includes a lower die body, and a lower melt flow channel is provided on the side of the lower die body close to the die core. The ends of the upper melt flow channel and the lower melt flow channel intersect with the discharge flow channel, and the end of the rib line outlet faces between the upper melt flow channel and the lower melt flow channel.

[0010] The temperature control device includes a heater, a heater is respectively provided on one side of the upper melt flow channel and the lower melt flow channel, a heater is respectively provided on both sides of the rib line flow channel, a speed regulating cavity is provided on the upper mold body, the speed regulating cavity is located on the upper side of the discharge flow channel, and the speed regulating device is placed in the speed regulating cavity. The speed regulating device includes a transmission chain, a sprocket and a drive motor. Two sprockets are provided, and the two sprockets are arranged along the flow direction of the medium in the discharge flow channel. The drive motor and the sprocket are connected in transmission. The transmission chain is wound around the outer rings of the two sprockets. The lower plane of the transmission chain is in transmission contact with the adjacent medium. The flow direction of the lower side of the transmission chain is the same as the flow direction of the medium in the discharge flow channel.

[0011] Differential flow: The medium flow rate close to the transmission chain is faster than the medium flow rate far away from the transmission chain.

[0012] A discharge flow channel is provided between the upper forming die and the lower forming die, which is used to guide the composite material of the upper melt and the lower melt with the ribs sandwiched therebetween, and extrude under pressure. The upper die body and the lower die body are close to the melt feeding side, and the two melt materials are guided respectively through the upper melt flow channel and the lower melt flow channel, and the melt is heated to the required plasticizing temperature through the heater on one side, and the molten rib material is guided through the rib flow channel on the die core and extruded from the rib outlet. When the three layers of melt material intersect in the discharge flow channel, they are distributed in a stacked manner, and the ribs are clamped between the two layers of plate materials to form a composite reinforced wire sheet. The upper melt flow channel and the lower melt flow channel are made of different materials and have a clear boundary layer. They are two layers of fluid, and the flow rate of the upper melt is adjusted by the speed regulating device on the upper side of the discharge flow channel. The speed regulating device is installed in the speed regulating cavity, and the sprocket is driven to rotate by the drive motor. During the rotation of the sprocket, the transmission is driven by the transmission. The chain rotates, and the lower side of the transmission chain is a planar structure with a rough surface. Under the action of the viscosity of the upper melt, the upper melt is dragged forward by the transmission chain, so that the flow rate of the upper melt is greater than the flow rate of the lower melt. By forming a differential flow, the lower melt is regarded as a state tending to be stationary, and the upper fluid is in a flowing state, and the flow rate is the difference in melt flow rates between the upper and lower layers. The upper layer is a flow close to the moving boundary, and the lower layer is similar to a state close to a fixed boundary. The viscous resistance between the upper and lower melts drives the lower melt to flow, forming a drag flow state. The melt close to the moving boundary moves faster and away from the moving boundary, and the melt close to the fixed boundary moves slower, thereby forming a shear flow in the upper melt, and part of the upper melt is inserted into the lower melt. After later molding, due to different plasticizing temperatures of the materials, the cooling rates are also different, and the upper sheet is partially inserted into the lower sheet, thereby improving the self-locking quality.

[0013] Furthermore, the transmission chain includes a plurality of chain plates, a plurality of chain plates are provided with a shaft pin on one side, adjacent chain plates are rotatably connected by the shaft pin, an engagement groove is provided on the inner side of the chain plate, the sprocket is transmission-connected to the chain plate through the engagement groove, a sealing arc surface is provided on one side of the chain plate, and a sealing groove is provided on the other side of the chain plate;

[0014] The sealing arc surface contacts the sealing groove surface on the adjacent chain plate.

[0015] The transmission chain includes several chain plates, which are driven by meshing grooves and sprockets. The connected chain plates are connected by shaft pins, which can generate relative rotation and are used for reversing meshing at the head and tail sections. The chain plates are in a rotating sealed state through the front sealing arc surface and the front sealing groove, so that the lower layer of the transmission chain presents a complete plane structure, which is convenient for dragging flow and improves the smoothness of the dragging flow state of the upper melt.

[0016] Furthermore, the upper forming die also includes an upper die lip, and the lower forming die also includes a lower die lip. The upper die lip is located at the end of the upper die body, and the upper die lip and the upper die body are slidingly connected. The lower die lip is located at the end of the lower die body, and the lower die lip and the lower die body are slidingly connected. The height adjustment mechanism includes a transmission screw and a nut. Transmission screws are respectively provided on the upper die lip and the lower die lip, and nuts are respectively provided at corresponding positions of the upper die body and the lower die body. The two nuts are respectively rotatably connected to the upper die body and the lower die body, and the nuts and adjacent transmission screws are threadedly transmitted.

[0017] The upper die lip and the lower die lip are respectively located at the end of the upper die body and the lower die body, and are used to extrude the composite sheet material in the plug-in state. They are located at the end of the discharge flow channel. The upper die lip and the lower die lip are each provided with a height adjustment mechanism for adjusting the height. When large-scale adjustment is performed, it is used to produce composite sheets of different sizes. When small-scale adjustment is performed, it is used to adjust the extrusion state of local composite sheets. The upper die body and the lower die body are respectively provided with a rotating groove, and the nut is placed in the rotating groove. The nut can rotate on a fixed axis in the rotating groove. The upper die lip and the lower die lip are respectively fastened to the transmission screw. When the nut is rotated, since the transmission screw does not rotate, the upper die lip and the lower die lip are driven to move in the vertical direction under the action of the thread engagement.

[0018] Furthermore, the temperature control device also includes a heat insulation board, which is located outside the heater on the mold core.

[0019] For example: the upper layer melt is made of PP material, the middle rib material is nylon, the plasticizing temperature is 200-280℃, the lower layer melt is acrylic material, the plasticizing temperature is 180-250℃, the heating temperature of the three melts is controlled by the heater, and the adjacent melts are separated by setting up insulation boards to avoid mutual interference due to the temperature difference between the two.

[0020] Furthermore, the temperature control device also includes a cooling pipe, a cooling groove is provided on the mold core, the cooling pipe is placed in the cooling groove, and the cooling groove is located outside the rib line outlet.

[0021] The cooling pipe is installed through the cooling trough, and the cooling pipe is connected to the cold air source. The molten ribs at the rib outlet are pre-cooled through the cooling pipe to ensure the cylindricity of the ribs. After the ribs are discharged, the radial cross-section remains consistent. When the reinforced wire plate is subjected to stress in the later stage, the stress at each point of the nylon ribs remains consistent, and local fracture will not occur.

[0022] As an optimization, the cooling pipes are arranged in a spiral shape. This allows for circumferential cooling of the ribs, improving circumferential cooling uniformity and ensuring the cylindrical shape of the discharged material.

[0023] As an optimization, the cooling tube spiral diameter decreases along the conveying direction of the internal ribs. By setting the cooling tube spiral diameter gradually, the flow rate decreases as the ribs move forward, thereby increasing the local pressure and forming a cylindrical shape during extrusion.

[0024] As an optimization, the chain plate width is smaller than the discharge channel width. The length direction is along the transmission chain, and the horizontal direction perpendicular to the conveying direction is the width direction. The chain plate width is smaller than the discharge channel width, so that the side edges of the two reinforced plates do not blend together, and a clear boundary layer is still maintained.

[0025] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: under the action of the viscosity of the upper melt, the present invention drags the upper melt forward through the transmission chain, so that the flow speed of the upper melt is greater than the flow speed of the lower melt, and by forming a differential flow, the lower melt is regarded as a state tending to be static, the upper fluid is in a flowing state, the flow speed is the difference in melt flow speed between the upper and lower layers, the upper layer is a flow close to the moving boundary, and the lower layer is similar to a state close to a fixed boundary, and the lower layer melt is driven to flow by the viscous resistance between the upper and lower melts, forming a drag flow state, and the melt close to the moving boundary is The melt moves quickly away from the moving boundary, while the melt near the fixed boundary moves slowly, causing shear flow to form in the upper melt. Part of the upper melt is inserted into the lower melt. After later molding, due to different plasticizing temperatures and cooling rates of the materials, part of the upper sheet is inserted into the lower sheet, improving the self-locking quality. The molten ribs at the rib outlet are pre-cooled by the cooling pipe to ensure the cylindricity of the ribs, so that the radial cross-section remains consistent after the ribs are discharged, so that when the reinforced wire plate is subjected to stress in the later stage, the stress at each point of the nylon ribs remains consistent, and no local fracture occurs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the co-extrusion molding of the reinforced plate of the present invention;

[0029] Figure 3 It is a structural schematic diagram of the molding device of the present invention;

[0030] Figure 4 It is a schematic diagram of the mold core structure of the present invention;

[0031] Figure 5 yes Figure 2 A magnified view of the partial A of the view;

[0032] Figure 6 It is a schematic diagram of the transmission chain structure of the present invention;

[0033] Figure 7 yes Figure 2 A magnified view of a detail B of the view;

[0034] In the figure: 1-molding device, 11-upper molding die, 111-upper mold body, 1111-upper melt flow channel, 1112-speed regulating cavity, 112-upper mold lip, 12-lower molding die, 121-lower mold body, 1211-lower melt flow channel, 122-lower mold lip, 13-mold core, 131-ribbed line flow channel, 132-ribbed line outlet, 133-cooling trough, 14-discharge flow channel, 2-speed regulating device, 21-transmission chain, 211-chain plate, 2111-engaging groove, 2112-sealing groove, 2113-sealing arc surface, 212-axle pin, 22-sprocket, 23-drive motor, 3-temperature control device, 31-heater, 32-heat insulation board, 33-cooling pipe, 4-height adjustment mechanism, 41-transmission screw, 42-nut. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] The present invention provides a technical solution:

[0037] like Figures 1 to 7 As shown, a co-extrusion die for an intermediate stiffened plate includes a molding device 1, a speed regulating device 2, a temperature control device 3 and a height adjustment mechanism 4. The molding device 1 is connected to the speed regulating device 2, the temperature control device 3 is firmly connected to the molding device 1, and the height adjustment mechanism 4 is connected to the molding device 1. The molding device 1 includes an upper molding die 11, a lower molding die 12 and a mold core 13. The upper molding die 11, the mold core 13 and the lower molding die 12 are arranged in sequence, and the two sides of the mold core 13 are firmly connected to the upper molding die 11 and the lower molding die 12 respectively.

[0038] After the melt is pressurized, it is transported to the molding device 1 through a pipeline for extrusion molding. The melt flow rate is assisted by the speed regulating device 2, and the temperature of the three-layer melt is controlled by the temperature control device 3. The height adjustment mechanism 4 is used to adjust the height to ensure the uniformity of the extruded material. The upper molding die 11, the lower molding die 12 and the mold core 13 perform extrusion molding of three different materials to improve the efficiency of integrated molding.

[0039] Furthermore, a discharge runner 14 is provided between the upper molding die 11 and the lower molding die 12, a rib line runner 131 is provided in the mold core 13, and a rib line outlet 132 is provided at the end of the rib line runner 131. The upper molding die 11 includes an upper mold body 111, and an upper melt runner 1111 is provided on the side of the upper mold body 111 close to the mold core 13. The lower molding die 12 includes a lower mold body 121, and a lower melt runner 1211 is provided on the side of the lower mold body 121 close to the mold core 13. The ends of the upper melt runner 1111 and the lower melt runner 1211 intersect with the discharge runner 14, and the end of the rib line outlet 132 faces between the upper melt runner 1111 and the lower melt runner 1211.

[0040] The temperature control device 3 includes a heater 31, a heater 31 is provided on one side of the upper melt flow channel 1111 and the lower melt flow channel 1211, and a heater 31 is provided on both sides of the rib line flow channel 131. A speed regulating cavity 1112 is provided on the upper mold body 111, and the speed regulating cavity 1112 is located on the upper side of the discharge flow channel 14. The speed regulating device 2 is placed in the speed regulating cavity 1112. The speed regulating device 2 includes a transmission chain 21, a sprocket 22 and a drive motor 23. Two sprockets 22 are provided. The two sprockets 22 are arranged along the flow direction of the medium in the discharge flow channel 14. The drive motor 23 is connected to the sprocket 22 for transmission. The transmission chain 21 is wound around the outer rings of the two sprockets 22. The lower plane of the transmission chain 21 is in transmission contact with the adjacent medium. The flow direction of the lower side of the transmission chain 21 is the same as the flow direction of the medium in the discharge flow channel 14.

[0041] Differential flow: The flow velocity of the medium close to the transmission chain 21 is faster than the flow velocity of the medium far from the transmission chain 21 .

[0042] A discharge channel 14 is provided between the upper molding die 11 and the lower molding die 12 for guiding the composite material of the upper melt and the lower melt with the ribs. Under the action of pressure, the composite material is extruded. The upper mold body 111 and the lower mold body 121 are close to the melt feeding side. The upper melt flow channel 1111 and the lower melt flow channel 1211 are used to guide the two melt materials respectively, and the melt is heated to the required plasticizing temperature through the heater 31 on one side. The melted ribs are heated to the required plasticizing temperature through the rib flow channel 131 on the mold core 13. The material is guided and extruded from the rib outlet 132. When the three layers of melt material intersect at the discharge channel 14, they are distributed in a stacked manner and clamp the ribs between the two layers of plate material to form a composite reinforced wire sheet. The upper melt flow channel 1111 and the lower melt flow channel 1211 are made of different materials and have a clear boundary layer. They are two layers of fluid. The flow rate of the upper melt is adjusted by the speed regulating device 2 on the upper side of the discharge channel 14. The speed regulating device 2 is installed in the speed regulating chamber 1112 and drives the sprocket through the drive motor 23. 22 rotates. During the rotation of the sprocket 22, the transmission chain 21 is driven to perform a rotational motion through transmission. The lower side of the transmission chain 21 is a planar structure with a rough surface. Under the action of the viscosity of the upper melt, the upper melt is dragged forward by the transmission chain 21, so that the flow speed of the upper melt is greater than the flow speed of the lower melt. By forming a differential flow, the lower melt is regarded as a state tending to be stationary, and the upper fluid is in a flowing state. The flow speed is the difference in melt flow speed between the upper and lower layers. The upper layer is a flow close to the moving boundary, and the lower layer is similar to a state close to a fixed boundary. The viscous resistance between the upper and lower melts drives the lower melt to flow, forming a drag flow state. The melt close to the moving boundary moves faster and away from the moving boundary, and the melt close to the fixed boundary moves slower, thereby forming a shear flow in the upper melt, and part of the upper melt is inserted into the lower melt. After the later molding, due to the different plasticizing temperatures and cooling rates of the materials, the upper sheet is partially inserted into the lower sheet, thereby improving the self-locking quality.

[0043] Furthermore, the transmission chain 21 includes a plurality of chain plates 211, each of which is provided with an axle pin 212 on one side. Adjacent chain plates 211 are rotatably connected by the axle pin 212. An engagement groove 2111 is provided on the inner side of the chain plate 211. The sprocket 22 is transmission-connected to the chain plate 211 via the engagement groove 2111. A sealing arc surface 2113 is provided on one side of the chain plate 211, and a sealing groove 2112 is provided on the other side of the chain plate 211.

[0044] The sealing arc surface 2113 is in surface contact with the sealing groove 2112 on the adjacent link plate 211 .

[0045] The transmission chain 21 includes several chain plates 211, which are driven by the meshing groove 2111 and the sprocket 22. The connected chain plates 211 are connected by the shaft pin 212, which can generate relative rotation and be used for reversing meshing at the head and tail sections. The chain plate 211 is in a rotationally sealed state through the front sealing arc surface 2113 and the front sealing groove 2112, so that the lower layer of the transmission chain 21 presents a complete planar structure, which is convenient for dragging flow and improves the smoothness of the dragging flow state of the upper melt.

[0046] Furthermore, the upper molding die 11 also includes an upper die lip 112, and the lower molding die 12 also includes a lower die lip 122. The upper die lip 112 is located at the end of the upper mold body 111, and the upper die lip 112 and the upper mold body 111 are slidingly connected. The lower die lip 122 is located at the end of the lower mold body 121, and the lower die lip 122 and the lower mold body 121 are slidingly connected. The height adjustment mechanism 4 includes a transmission screw 41 and a nut 42. The upper die lip 112 and the lower die lip 122 are respectively provided with a transmission screw 41, and the upper mold body 111 and the lower mold body 121 are respectively provided with nuts 42 at corresponding positions. The two nuts 42 are respectively rotatably connected to the upper mold body 111 and the lower mold body 121, and the nuts 42 and the adjacent transmission screws 41 are threadedly transmitted.

[0047] The upper die lip 112 and the lower die lip 122 are respectively located at the ends of the upper die body 111 and the lower die body 121, and are used to extrude the composite sheet material in the plug-in state. They are located at the end of the discharge channel 14. The upper die lip 112 and the lower die lip 122 are each provided with a height adjustment mechanism 4 for adjusting the height. When large-scale adjustment is performed, it is used to produce composite sheets of different sizes. When small-scale adjustment is performed, it is used to adjust the extrusion state of local composite sheets. A rotary groove is respectively provided on the upper die body 111 and the lower die body 121, and the nut 42 is placed in the rotary groove. The nut 42 can rotate around a fixed axis in the rotary groove. The upper die lip 112 and the lower die lip 122 are respectively fastened to the transmission screw 41. When the nut 42 is rotated, since the transmission screw 41 does not rotate, the upper die lip 112 and the lower die lip 122 are driven to move in the vertical direction under the action of the thread engagement.

[0048] Furthermore, the temperature control device 3 further includes a heat insulation board 32 , which is located outside the heater 31 on the mold core 13 .

[0049] For example, the upper melt is made of PP, the middle rib material is nylon, and the plasticizing temperature is 200-280°C. The lower melt is made of acrylic material, and the plasticizing temperature is 180-250°C. The heating temperatures of the three melts are controlled by the heater 31, and the adjacent melts are separated by the heat insulation board 32 to avoid mutual interference due to the temperature difference between the two.

[0050] Furthermore, the temperature control device 3 also includes a cooling pipe 33 . A cooling groove 133 is provided on the mold core 13 . The cooling pipe 33 is placed in the cooling groove 133 . The cooling groove 133 is located outside the rib outlet 132 .

[0051] The cooling pipe 33 is installed through the cooling groove 133, and the cooling pipe 33 is connected to the cold air source. The molten ribs at the rib outlet 132 are pre-cooled through the cooling pipe 33, thereby ensuring the cylindricity of the ribs and keeping the radial cross-section consistent after the ribs are discharged. When the reinforced wire plate is subjected to stress in the later stage, the stress at each point of the nylon ribs is consistent, and no local fracture occurs.

[0052] As an optimization, the cooling tube 33 is arranged in a spiral shape. By the spiral arrangement of the cooling tube 33, the ribs are cooled circumferentially, the circumferential cooling uniformity is improved, and the cylindricality of the discharged material is ensured.

[0053] As an optimization, the cooling tube 33 spiral diameter decreases along the conveying direction of the internal ribs. By gradually changing the cooling tube 33 spiral diameter, the flow rate decreases as the ribs move forward, thereby increasing the local pressure and forming a cylindrical shape during extrusion.

[0054] As an optimization, the width of the chain plate 211 is smaller than the width of the discharge channel 14. The conveying direction along the transmission chain 21 is the length direction, and the horizontal direction perpendicular to the conveying direction is the width direction. The width of the chain plate 211 is smaller than the width of the discharge channel 14, so that the side edges of the two side reinforcement plates do not blend together, and still form a clear boundary layer.

[0055] The working principle of the present invention is as follows: under the action of the viscosity of the upper melt, the upper melt is dragged forward by the transmission chain 21, so that the flow speed of the upper melt is greater than the flow speed of the lower melt. By forming a differential flow, the lower melt is regarded as a state tending to be static, the upper fluid is in a flowing state, and the flow speed is the difference in melt flow speed between the upper and lower layers. The upper layer is a flow close to the moving boundary, and the lower layer is similar to a state close to a fixed boundary. The viscous resistance between the upper and lower melts drives the lower melt to flow, forming a drag flow state. The melt close to the moving boundary moves faster and farther. The melt moving away from the moving boundary and close to the fixed boundary moves slowly, so that the upper melt forms shear flow, and part of the upper melt is inserted into the lower melt. After the later molding, due to the different plasticizing temperatures of the materials, the cooling speed is also different, and the upper plate is partially inserted into the lower plate, thereby improving the self-locking quality; the molten ribs at the rib outlet 132 are pre-cooled by the cooling pipe 33 to ensure the cylindricity of the ribs, so that the radial cross-section remains consistent after the ribs are discharged, so that when the reinforced wire plate is subjected to force in the later stage, the force at each point of the nylon ribs remains consistent, and no local fracture occurs.

[0056] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0057] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A co-extrusion die for an intermediate reinforced plate, characterized by: The co-extrusion die comprises a molding device (1), a speed regulating device (2), a temperature control device (3) and a height adjustment mechanism (4); the molding device (1) is connected to the speed regulating device (2); the temperature control device (3) is tightly connected to the molding device (1); the height adjustment mechanism (4) is connected to the molding device (1); the molding device (1) comprises an upper molding die (11), a lower molding die (12) and a mold core (13); the upper molding die (11), the mold core (13) and the lower molding die (12) are arranged in sequence; and both sides of the mold core (13) are tightly connected to the upper molding die (11) and the lower molding die (12) respectively; The mold core (13) is provided with a rib runner (131), the upper molding die (11) comprises an upper mold body (111), and the upper mold body (111) is provided with an upper melt runner (1111) on a side close to the mold core (13); the lower molding die (12) comprises a lower mold body (121), and the lower mold body (121) is provided with a lower melt runner (1211) on a side close to the mold core (13); The temperature control device (3) includes a heater (31), a heater (31) is provided on one side of the upper melt flow channel (1111) and the lower melt flow channel (1211), and a heater (31) is provided on both sides of the rib line flow channel (131). A speed regulating cavity (1112) is provided on the upper mold body (111), and the speed regulating cavity (1112) is located on the upper side of the discharge flow channel (14). The speed regulating device (2) is placed in the speed regulating cavity (1112), and the speed regulating device (2) includes a transmission chain (21). The lower plane of the transmission chain (21) is in transmission contact with the adjacent medium, and the flow direction of the lower side of the transmission chain (21) is the same as the flow direction of the medium in the discharge flow channel (14). Differential flow: The flow velocity of the medium close to the transmission chain (21) is faster than the flow velocity of the medium far from the transmission chain (21).

2. The co-extrusion die for the intermediate reinforced plate according to claim 1, characterized in that: A discharge flow channel (14) is provided between the upper forming die (11) and the lower forming die (12); a rib line outlet (132) is provided at the end of the rib line flow channel (131); the ends of the upper melt flow channel (1111) and the lower melt flow channel (1211) intersect with the discharge flow channel (14); and the end of the rib line outlet (132) faces between the upper melt flow channel (1111) and the lower melt flow channel (1211); The speed regulating device (2) comprises a sprocket (22) and a driving motor (23), wherein two sprockets (22) are provided, and the two sprockets (22) are arranged along the flow direction of the medium in the discharge flow channel (14), the driving motor (23) and the sprocket (22) are connected in a transmission manner, and the transmission chain (21) is wound around the outer rings of the two sprockets (22).

3. The co-extrusion die for the intermediate reinforced plate according to claim 2, characterized in that: The transmission chain (21) includes a plurality of chain plates (211), one side of each of the chain plates (211) is provided with an axle pin (212), adjacent chain plates (211) are rotatably connected via the axle pin (212), an inner side of each chain plate (211) is provided with an engagement groove (2111), the sprocket (22) is transmission-connected to the chain plates (211) via the engagement groove (2111), one side of each chain plate (211) is provided with a sealing arc surface (2113), and the other side of the chain plate (211) is provided with a sealing groove (2112); The sealing arc surface (2113) is in surface contact with the sealing groove (2112) on the adjacent chain plate (211).

4. The co-extrusion die for the intermediate stiffened plate according to claim 3, characterized in that: The upper molding die (11) further includes an upper die lip (112), and the lower molding die (12) further includes a lower die lip (122), wherein the upper die lip (112) is located at the end of the upper mold body (111), and the upper die lip (112) and the upper mold body (111) are slidably connected, and the lower die lip (122) is located at the end of the lower mold body (121), and the lower die lip (122) and the lower mold body (121) are slidably connected, and the height adjustment mechanism (4) includes a transmission screw (41) and a nut (42), wherein the upper die lip (112) and the lower die lip (122) are respectively provided with a transmission screw (41), and the upper mold body (111) and the lower mold body (121) are respectively provided with nuts (42), and the two nuts (42) are respectively rotatably connected to the upper mold body (111) and the lower mold body (121), and the nuts (42) and the adjacent transmission screws (41) are threadedly driven.

5. The co-extrusion die for the intermediate stiffened plate according to claim 4, characterized in that: The temperature control device (3) further comprises a heat insulation plate (32), and the heat insulation plate (32) is located outside the heater (31) on the mold core (13).

6. The co-extrusion die for the intermediate stiffened plate according to claim 5, characterized in that: The temperature control device (3) further comprises a cooling pipe (33), a cooling groove (133) is provided on the mold core (13), the cooling pipe (33) is placed in the cooling groove (133), and the cooling groove (133) is located outside the rib outlet (132).

7. The co-extrusion die for the intermediate stiffened plate according to claim 6, characterized in that: The cooling tube (33) is arranged in a spiral shape.

8. The co-extrusion die for the intermediate stiffened plate according to claim 7, characterized in that: The spiral diameter of the cooling pipe (33) decreases along the conveying direction of the internal rib line.

9. The co-extrusion die for the intermediate stiffened plate according to claim 8, characterized in that: The width of the chain plate (211) is smaller than the width of the discharge channel (14).

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