Extrusion feeding device, extrusion forming system and control method

Abstract

The invention relates to the technical field of metal material plastic forming, and discloses an extrusion feeding device, an extrusion forming system and a control method.The extrusion feeding device comprises a loading module and a feeding driving module, and the loading module is arranged between an extrusion driving device and an extrusion forming device; a plurality of loading parts used for loading bars are distributed on the loading module, the plurality of loading parts extend and penetrate in the first direction, the loading module is provided with a heating assembly, and the heating assembly is used for heating the bars of the plurality of loading parts; the feeding driving module is used for driving the loading module to move in the direction perpendicular to the first direction so as to control the loading module to move out of or move into the working position between the extrusion driving device and the extrusion forming device. According to the invention, the heating assembly and the plurality of loading parts are adopted, bar material supplement and temperature stabilization are completed in the extrusion stroke, the extrusion temperature of the bar material can be accurately controlled, and the controllability of extrusion process conditions is ensured.

Description

Technical Field

[0001] This invention relates to the field of metal material plastic forming technology, and in particular to an extrusion feeding device, an extrusion forming system and a control method. Background Technology

[0002] Using multiple small-diameter bars instead of a single large-diameter bar for extrusion forming can effectively reduce the extrusion ratio and is an important method for achieving one-time integral extrusion of wide aluminum alloy profiles / sheets with low extrusion pressure. However, in the multi-bar extrusion process, each extrusion cycle requires multiple bar loading processes, which is more complex than the traditional single-bar loading process. Currently, the loading operation of aluminum alloy extrusion production lines is mostly carried out manually or by robots. Manual loading is labor-intensive, inefficient, and it is difficult to ensure that each loading process follows standardized operations without accidents; while robotic loading is limited by fixtures and heating furnace equipment, often only able to hold one bar at a time, resulting in poor continuity of loading actions and low loading and transfer efficiency. At the same time, the transfer sequence of each bar varies, and the bars are exposed to air for a longer and inconsistent time, resulting in large heat loss during loading and making it difficult to ensure the accuracy and consistency of bar temperature, which affects the forming quality of the extrusion process. Summary of the Invention The purpose of this invention is to provide an extrusion feeding device, an extrusion forming system and a control method to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0003] The technical solution adopted to solve the above-mentioned technical problems is as follows: This invention provides an extrusion feeding device, comprising: A loading module is located between the extrusion drive device and the extrusion forming device. The loading module has multiple loading sections for loading bar stock. The multiple loading sections extend and pass through each other along a first direction, wherein the first direction is set as the direction in which the extrusion drive device and the extrusion forming device are arranged at intervals. The loading module is provided with a heating component for heating the bar stock in the multiple loading sections. The feeding drive module is connected to the loading module in a transmission manner. The feeding drive module is used to drive the loading module to move in a direction perpendicular to the first direction, so as to control the loading module to move out or into the working position between the extrusion drive device and the extrusion forming device.

[0004] As a further improvement to the above technical solution, the loading part is a loading hole.

[0005] As a further improvement to the above technical solution, the two ends of the loading hole are respectively provided with a switchable sealing mechanism.

[0006] As a further improvement to the above technical solution, the heating assembly includes multiple heating units, each of which heats the bar stock in the multiple loading sections individually.

[0007] As a further improvement to the above technical solution, the plurality of loading sections are arranged in a matrix, and the plurality of loading sections include multiple layers of loading sections, each layer of loading section including a preset number of loading sections; The feeding drive module is also used to control the multiple layers of the feeding section to move sequentially to the feeding position. When each layer of the feeding section is in the feeding position, the two ends of the feeding section in each layer are respectively opposite to the extrusion drive device and the extrusion forming device.

[0008] As a further improvement to the above technical solution, the feeding drive module includes a first drive mechanism and a second drive mechanism. The first drive mechanism is used to drive the loading module to move out or into the space between the extrusion drive device and the extrusion forming device. The second drive mechanism is used to drive the multi-layer loading section to move sequentially to the loading position.

[0009] As a further improvement to the above technical solution, the first driving mechanism includes a feeding guide rail, a support seat slidably mounted on the feeding guide rail along a second direction, and a first driving structure for driving the support seat to move. The second driving mechanism includes a lifting slider slidably mounted on the support seat along a third direction, and a second driving structure for driving the lifting slider to move. The loading module is mounted on the lifting slider.

[0010] The present invention also proposes an extrusion forming system, including the extrusion feeding device, the extrusion driving device and the extrusion forming device, wherein the extrusion driving device and the extrusion forming device are arranged opposite each other at a distance along a first direction, and the loading module is disposed between the extrusion driving device and the extrusion forming device.

[0011] As a further improvement to the above technical solution, the extrusion driving device includes a plurality of extrusion rods extending along the first direction and an extrusion driving structure for driving the plurality of extrusion rods to move along the first direction. The extrusion forming device includes an extrusion cylinder seat and a plurality of extrusion dies connected sequentially along the first direction. The extrusion cylinder seat is close to the extrusion driving device and is provided with a plurality of extrusion holes that are arranged one-to-one with the plurality of extrusion rods.

[0012] Furthermore, the present invention also proposes a control method for extrusion molding, applicable to the aforementioned extrusion molding system, the control method comprising: Control the loading of the bar stock to be extruded into multiple loading sections; Control the heating of the bar stock to a preset temperature and maintain the temperature for a preset time; The loading module is controlled to move and be positioned between the extrusion drive device and the extrusion forming device; The extrusion drive device is controlled to push the bar stock from the preset loading section into the extrusion forming device; Control the loading module to move out from between the extrusion drive device and the extrusion forming device; The extrusion drive device is controlled to extrude the bar stock in the extrusion forming device; The system controls the loading of new bar stock into the loading section after the bar stock has been unloaded, and then heats and maintains the temperature.

[0013] The beneficial effects of this invention are: In operation, the control module moves from between the extrusion drive device and the extrusion forming device to the loading position. Then, the bar stock is loaded into multiple loading sections, and the heating component heats and maintains the bar stock. At the start of extrusion, the control module moves to the working position between the extrusion drive device and the extrusion forming device to load the bar stock. After loading, the control module moves back to the loading position without interfering with the extrusion operation between the extrusion drive device and the extrusion forming device. This invention, using a heating component and multiple loading sections, replenishes the bar stock and stabilizes the temperature during the extrusion stroke, ensuring a continuous supply of bar stock. After the extrusion action is completed and exited, only one loading action is needed to proceed to the next extrusion stroke. There is no need to wait for the bar stock to exit the furnace between extrusion strokes, and the bar stock is not completely exposed to air, greatly limiting heat loss during loading and ensuring temperature consistency across multiple bar stock, significantly improving production efficiency. Meanwhile, during feeding, the bar stock on the preset feeding section can be fed according to demand, while other bar stock is retained in the feeding module for heating and insulation. This allows sufficient time for the bar stock to stabilize and homogenize its temperature after entering the feeding device. Alternatively, heating can be performed directly within the feeding device to prevent bar stock transfer and precisely control the extrusion temperature, ensuring the controllability of the extrusion process conditions.

[0014] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a schematic diagram of an embodiment of the extrusion forming system provided by the present invention; Figure 2 This is a schematic diagram of an embodiment of the extrusion feeding device provided by the present invention; Figure 3 This is a flowchart of an embodiment of the extrusion molding control method provided by the present invention; Icon labels: 100 loading module; 110 loading section; 120 heating unit; Feeding drive module 200; first drive mechanism 210; feeding guide rail 211; support base 212; second drive mechanism 220; lifting slider 221; Extrusion drive device 300; extrusion rod 310; Extrusion forming device 400; extrusion cylinder seat 410; extrusion hole 411; Extrusion die 420. Detailed Implementation

[0016] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0017] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0018] In the description of this invention, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features or their sequential relationship.

[0019] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0020] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are some embodiments of the present invention, not all embodiments.

[0021] With the development of lightweight transportation equipment, aluminum extrusions have been widely used in automobiles, rail transportation, aerospace, shipbuilding and other fields, becoming an important lightweight material to replace traditional steel. Taking high-speed rail as an example, about 90% of high-speed rail vehicles use aluminum alloy bodies, and aluminum profiles account for more than 90% of the usage, with the remainder being aluminum sheets.

[0022] Replacing a single large-diameter bar with multiple 310 extrusion rods and several small-diameter aluminum alloy bars can effectively reduce the extrusion ratio, which is an important method for achieving low-extrusion-pressure, single-pass, integral extrusion of wide aluminum alloy profiles / sheets. However, in the multi-bar extrusion process, each extrusion cycle requires multiple bar loading processes, which is more complex than the traditional single-bar loading process. Currently, the loading operation of aluminum alloy extrusion production lines is mostly performed manually or by robots.

[0023] Whether it is manual or mechanical feeding, the bar stock is inevitably exposed to the air for a period of time between exiting the furnace and extrusion. At the same time, the transfer order of each bar stock is different, and the time the bar stock is exposed to the air is long and inconsistent, resulting in large heat loss during the feeding process. It is difficult to ensure the accuracy and consistency of the bar stock temperature. In addition, the full contact with air also accelerates the formation of oxides on the surface of the aluminum bar. All these problems affect the forming quality of the subsequent extrusion process.

[0024] Therefore, the present invention provides an extrusion feeding device that enables automatic feeding in a short time, greatly shortens the time for bar stock transfer and feeding between extrusion strokes, and reduces heat loss and oxidation of the bar stock in the air.

[0025] like Figure 1 As shown, the extrusion feeding device of the present invention includes a feeding module 100 and a feeding drive module 200.

[0026] like Figure 2 As shown, the loading module 100 is located between the extrusion driving device 300 and the extrusion forming device 400. The extrusion driving device 300 and the extrusion forming device 400 are arranged at intervals along a first direction. In this embodiment, the first direction is defined as the front-back direction. In some other embodiments, the first direction can be set as the left-right or up-down direction, etc. In this embodiment, the first direction is the front-back direction as an example.

[0027] like Figure 1 and 2 As shown, the loading module 100 of this embodiment has multiple loading sections 110 for loading bar stock. The multiple loading sections 110 extend and pass through each other in the front-back direction. The bar stock can be fixedly placed on the loading section 110, and can move in the front-back direction under the action of external force.

[0028] The loading module 100 in this embodiment is equipped with a heating component, which is used to heat the bar stock on the multiple loading sections 110.

[0029] The feeding drive module 200 of the present invention is connected to the loading module 100 in a transmission manner. The feeding drive module 200 is used to drive the loading module 100 to move in a direction perpendicular to the first direction, so as to control the loading module 100 to move out or into the working position between the extrusion drive device 300 and the extrusion forming device 400.

[0030] In use, the control module 100 moves from between the extrusion drive device 300 and the extrusion forming device 400 to the loading position, and then the bar stock is loaded into multiple loading sections 110. The bar stock is heated and kept warm by the heating component. Then the control module 100 moves into the working position between the extrusion drive device 300 and the extrusion forming device 400 to feed the bar stock. During feeding, the extrusion drive device 300 pushes the bar stock into the extrusion forming device 400.

[0031] After the material is loaded, the loading module 100 is moved to the loading position without interfering with the extrusion operation between the extrusion drive device 300 and the extrusion forming device 400. At this time, the extrusion drive device 300 extrudes and forms the bar material in the extrusion forming device 400.

[0032] This invention employs a heating component and multiple charging sections 110 to replenish and stabilize the bar stock during the extrusion stroke, ensuring a continuous supply of bar stock. After the extrusion action is completed and exited, only one transfer action is required to proceed to the next extrusion stroke. There is no need to wait for the bar stock to exit the furnace and transfer between extrusion strokes, which greatly improves production efficiency. The efficiency improvement is even more significant when multiple billets are extruded simultaneously. It is suitable for the extrusion forming of wide aluminum alloy profiles / sheets.

[0033] Furthermore, during feeding, the bar stock on the preset loading section 110 can be fed according to the requirements, while other bar stock is retained in the loading module 100 for heating and heat preservation. This allows sufficient time for the bar stock to stabilize and homogenize its temperature after entering the feeding device. In some other embodiments, the bar stock can also be heated directly in the feeding device to avoid the transfer of high-temperature bar stock, which greatly limits the heat loss of the bar stock during the feeding process. This enables precise control of the bar stock extrusion temperature and ensures the controllability of the extrusion process conditions.

[0034] In this embodiment, the loading section 110 is a loading hole into which the bar stock is loaded and the movement of the bar stock is guided. The diameter of each loading hole may be the same or different.

[0035] In some other embodiments, the loading section 110 may be a trough-type structure.

[0036] Furthermore, a switchable sealing mechanism (not shown) is provided at both ends of the loading hole. When the bar stock is being loaded or pushed, the corresponding sealing mechanism is opened, while during heating and transfer, both ends of the loading hole are closed, reducing the contact area and contact time between the bar stock and air during the feeding process, thereby further reducing heat loss. At the same time, it also inhibits the oxidation process on the surface of the aluminum bar during the feeding process, reduces the generation of oxides, which is beneficial to improving the quality of extruded products and also improves the heating and heat preservation performance.

[0037] Specifically, the sealing mechanism of this embodiment includes a sealing plate and a sealing drive structure. The sealing plate is used to block the filling hole, and the sealing drive structure is used to drive the sealing plate to rotate around one side edge of the filling hole to realize the opening and closing of the sealing plate. The sealing drive structure can be a servo motor, and the edge of the sealing plate is hinged to the edge of the filling hole through a hinge shaft. The servo motor is driven by the hinge shaft. In some other embodiments, the sealing drive structure can drive the sealing plate to move circumferentially along the filling hole to realize the opening and closing of the sealing plate.

[0038] The heating assembly of the present invention includes multiple heating units 120, which individually heat the bar stock in multiple loading sections 110 in a one-to-one correspondence. In this embodiment, the heating unit 120 is a sleeve structure, which is sleeved in the loading hole.

[0039] The heating temperatures of the multiple heating units 120 can be the same or different to meet the different extrusion process requirements.

[0040] Furthermore, in this embodiment, the multiple loading sections 110 are arranged in a matrix, and the multiple loading sections 110 include multiple layers of loading sections 110, each layer of loading section 110 including a preset number of loading sections 110.

[0041] The feeding drive module 200 in this embodiment is also used to control the multi-layer feeding section 110 to move sequentially to the feeding position. When each layer of feeding section 110 is in the feeding position, the two ends of each layer of feeding section 110 are respectively opposite to the extrusion drive device 300 and the extrusion forming device 400. It can be understood that the bar stock in one layer of feeding section 110 can be pushed into the extrusion forming device 400 at the same time, which is suitable for the extrusion forming of wide aluminum alloy profiles / sheets. In each extrusion, the bar stock on one layer of feeding section 110 can be pushed into the extrusion forming device 400, while the bar stock in other layers of feeding section 110 continues to be pressurized and kept warm for use in the next extrusion. In each filling operation, only the new bar stock is filled into the just-empty feeding section 110, and the feeding section 110 of another layer is controlled to move to the feeding position, so that the bar stock has sufficient time to stabilize and homogenize its temperature after entering the feeding device.

[0042] The feeding drive module 200 in this embodiment includes a first drive mechanism 210 and a second drive mechanism 220. The first drive mechanism 210 is used to drive the loading module 100 to move out or into the working position between the extrusion drive device 300 and the extrusion forming device 400, while the second drive mechanism 220 is used to drive the multi-layer loading part 110 to move sequentially to the loading position.

[0043] In this embodiment, the first driving mechanism 210 drives the loading module 100 to move out of and into the working position, and the second driving mechanism 220 drives the loading module 100 to move, so as to control the multi-layer loading section 110 to move sequentially to the loading position.

[0044] Specifically, the first drive mechanism 210 of this embodiment includes a feeding guide rail 211, a support seat 212 slidably mounted on the feeding guide rail 211 along a second direction, and a first drive structure (not shown) for driving the support seat 212 to move. The second drive mechanism 220 includes a lifting slider 221 slidably mounted on the support seat 212 along a third direction, and a second drive structure (not shown) for driving the lifting slider 221 to move. The loading module 100 is mounted on the lifting slider 221.

[0045] In this embodiment, the second direction is defined as the left-right direction and the third direction as the up-down direction. The multi-layer loading parts 110 are arranged at intervals along the up-down direction, while the loading parts 110 in each layer are arranged at intervals along the left-right direction. In other embodiments, the arrangement of the loading parts 110 can be determined according to the shape of the profile / plate, and is not limited to the arrangement of this embodiment.

[0046] The first and second drive structures can be linear drive structures such as cylinders or electric rods.

[0047] In some other embodiments, a single drive mechanism can be used to move the loading module 100 out of and into the working position, as well as to control the multi-layer loading section 110 to move sequentially to the loading position. For example, the two actions can be accomplished by a second drive mechanism 220. Specifically, the second drive mechanism 220 drives the loading module 100 to move from bottom to top, moving the loading module 100 out to the loading position; the second drive mechanism 220 drives the loading module 100 to move from top to bottom, moving the loading module 100 into the working position; and the second drive mechanism 220 drives the loading module 100 to move up and down between the extrusion drive device 300 and the extrusion forming device 400, thereby controlling the loading section 110 of the corresponding layer to move to the loading position.

[0048] like Figure 1 As shown, the present invention also proposes an extrusion forming system, including the above-mentioned extrusion feeding device, extrusion driving device 300 and extrusion forming device 400. The extrusion driving device 300 and the extrusion forming device 400 are arranged opposite each other in the front-back direction, and the loading module 100 is disposed between the extrusion driving device 300 and the extrusion forming device 400.

[0049] The extrusion drive device 300 includes a plurality of extrusion rods 310 extending in the front-back direction and an extrusion drive structure (not shown) for driving the plurality of extrusion rods 310 to move in the front-back direction. In this embodiment, the extrusion drive structure includes a linear drive structure and a drive base. The plurality of extrusion rods 310 are mounted on the drive base. The linear drive structure drives the drive base to reciprocate in the front-back direction, thereby driving the plurality of extrusion rods 310 to move in the front-back direction.

[0050] The extrusion forming apparatus 400 of this embodiment includes an extrusion cylinder seat 410 and a plurality of extrusion dies 420 connected sequentially in the front-back direction. The extrusion cylinder seat 410 is close to the extrusion drive device 300. The extrusion cylinder seat 410 is provided with a plurality of extrusion holes 411 that are arranged one-to-one with the plurality of extrusion rods 310. During feeding, the bar stock on the loading module 100 is pushed into the plurality of extrusion holes 411 by the plurality of extrusion rods 310. Then the loading module 100 is moved out, and the plurality of extrusion rods 310 are controlled to re-enter the plurality of extrusion holes 411 to extrude the bar stock. The bar stock passes through the plurality of extrusion dies 420 and is extruded into a profile / plate of a certain length.

[0051] In addition, such as Figure 3 As shown, the present invention also proposes a control method for extrusion molding, applicable to the above-mentioned extrusion molding system, the control method comprising: Step S100: Control the loading of the bar stock to be extruded into multiple loading sections 110; Step S200: Control the heating of the bar stock to a preset temperature and hold it at that temperature for a preset time; Step S300: Control the loading module 100 to move and position itself between the extrusion drive device 300 and the extrusion forming device 400; Step S400: Control the extrusion drive device 300 to push the bar stock of the preset loading section 110 into the extrusion forming device 400. Step S500: Control the loading module 100 to move out from between the extrusion drive device 300 and the extrusion forming device 400; Step S600: Control the extrusion drive device 300 to extrude the bar stock in the extrusion forming device 400; Step S700: Control the loading of new bar stock into the loading section 110 after the bar stock has been unloaded, and heat and keep it warm.

[0052] In step S100, preheated bar stock is loaded into the loading hole, or room temperature bar stock is loaded into the loading hole. After loading, the two ends of the loading hole are closed by a sealing mechanism.

[0053] In step S200, the loading hole is preheated to the required temperature according to the extrusion process to improve the efficiency of heating the bar stock.

[0054] In step S300, in this embodiment, the first driving structure drives the support base 212 to move laterally, so as to move the loading module 100 into the working position positioned between the extrusion driving device 300 and the extrusion forming device 400. At the same time, the second driving structure drives the lifting slider 221 to move up and down, so as to move the loading hole of the corresponding layer to the loading position.

[0055] In step S400, the sealing mechanism on the loading hole at the loading position is opened, and the bar stock at the loading position is pushed into the multiple extrusion holes 411 by multiple extrusion rods 310.

[0056] In step S500, the extrusion rod 310 retracts to outside the feeding device, and then the first drive mechanism 210 drives the loading module 100 to move out of the working position. In this embodiment, the loading module 100 is moved to the side.

[0057] In step S600, the extrusion rod 310 continues to be pushed forward into the extrusion hole 411 to start the extrusion process.

[0058] In step S700, the new bar stock is loaded into the loading hole after the bar stock has been unloaded, the sealing mechanisms at both ends of the loading hole are closed, and heating and heat preservation are performed. Steps S600 and S700 are executed synchronously. The second drive mechanism 220 is also used to move the loading holes of other layers to the loading position, replacing the position of the loading holes in the original step S300.

[0059] Once an extrusion stroke is completed, the extrusion rod 310 retracts, and the loading module 100 moves back into the working position. Steps S300 to S700 are repeated until a certain length of profile / sheet material is extruded, at which point the extrusion stops.

[0060] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0061] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. An extrusion feeding device, characterized in that, include: A loading module is located between the extrusion drive device and the extrusion forming device. The loading module has multiple loading sections for loading bar stock. The multiple loading sections extend and pass through each other along a first direction, wherein the first direction is set as the direction in which the extrusion drive device and the extrusion forming device are arranged at intervals. The loading module is provided with a heating component for heating the bar stock in the multiple loading sections. The feeding drive module is connected to the loading module in a transmission manner. The feeding drive module is used to drive the loading module to move in a direction perpendicular to the first direction, so as to control the loading module to move out or into the working position between the extrusion drive device and the extrusion forming device.

2. The extrusion feeding device according to claim 1, characterized in that: The loading section is a loading hole.

3. The extrusion feeding device according to claim 2, characterized in that: The two ends of the loading hole are respectively equipped with a switchable sealing mechanism.

4. The extrusion feeding device according to claim 1, characterized in that: The heating assembly includes multiple heating units, each of which heats the bar stock in the multiple loading sections individually.

5. The extrusion feeding device according to claim 1, characterized in that: The plurality of loading sections are arranged in a matrix, and the plurality of loading sections include multiple layers of loading sections, each layer of loading sections including a preset number of loading sections; The feeding drive module is also used to control the multiple layers of the feeding section to move sequentially to the feeding position. When each layer of the feeding section is in the feeding position, the two ends of the feeding section in each layer are respectively opposite to the extrusion drive device and the extrusion forming device.

6. The extrusion feeding device according to claim 5, characterized in that: The feeding drive module includes a first drive mechanism and a second drive mechanism. The first drive mechanism is used to drive the feeding module to move out or into the space between the extrusion drive device and the extrusion forming device. The second drive mechanism is used to drive the multi-layer feeding section to move sequentially to the feeding position.

7. The extrusion feeding device according to claim 6, characterized in that: The first driving mechanism includes a feeding guide rail, a support seat slidably mounted on the feeding guide rail along a second direction, and a first driving structure for moving the support seat. The second driving mechanism includes a lifting slider slidably mounted on the support seat along a third direction, and a second driving structure for moving the lifting slider. The loading module is mounted on the lifting slider.

8. An extrusion molding system, characterized in that, The device includes the extrusion feeding device, extrusion driving device, and extrusion forming device as described in any one of claims 1 to 7, wherein the extrusion driving device and the extrusion forming device are arranged opposite each other at a distance along a first direction, and the loading module is disposed between the extrusion driving device and the extrusion forming device.

9. The extrusion forming system according to claim 8, characterized in that: The extrusion drive device includes a plurality of extrusion rods extending along the first direction and an extrusion drive structure for driving the plurality of extrusion rods to move along the first direction. The extrusion forming device includes an extrusion cylinder seat and a plurality of extrusion dies connected sequentially along the first direction. The extrusion cylinder seat is close to the extrusion driving device and is provided with a plurality of extrusion holes that are arranged one-to-one with the plurality of extrusion rods.

10. A method for controlling extrusion molding, characterized in that, The control method, applicable to the extrusion molding system as described in any one of claims 8 or 9, comprises: Control the loading of the bar stock to be extruded into multiple loading sections; Control the heating of the bar stock to a preset temperature and maintain the temperature for a preset time; The loading module is controlled to move and be positioned between the extrusion drive device and the extrusion forming device; The extrusion drive device is controlled to push the bar stock from the preset loading section into the extrusion forming device; Control the loading module to move out from between the extrusion drive device and the extrusion forming device; The extrusion drive device is controlled to extrude the bar stock in the extrusion forming device; The system controls the loading of new bar stock into the loading section after the bar stock has been unloaded, and then heats and maintains the temperature.

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