A closed section composite thin-walled rod forming apparatus

Abstract

The application discloses a closed cross-section composite thin-walled rod forming equipment, which comprises a base and further comprises a feeding die module, a forming die module and a winding die module arranged in a pipeline mode on the base in sequence, wherein the forming die module comprises a pod-shaped core die which is sequentially arranged on the base and is connected with the feeding die module and the winding die module at two ends and penetrates through a pre-solidification assembly and a hot-pressing solidification assembly; the composite material is shaped by using the pod-shaped core die, and then the two side edges of the upper and lower two layers of the composite material are integrally extruded and hot-pressed by using the pre-solidification assembly and the hot-pressing solidification assembly, so that the two sides of the processed composite thin-walled rod are integrated, the influence of stress concentration on the two side edges in the flattening and winding process is reduced, the two side edges of the composite thin-walled rod are difficult to crack, and the flexibility and strength of the composite thin-walled rod are enhanced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of composite material processing, in particular to a closed cross-section composite material thin-walled rod forming device. BACKGROUND

[0002] Prepreg pultrusion is a low-cost automated manufacturing technology for composite materials, which uses prepreg as raw material to produce composite products with a specific cross-sectional shape through raw material laying, molding, curing and demolding steps. It has the advantages of high production efficiency, unlimited product length, low product porosity, etc., and thus has gradually become an important development trend in large-scale composite material processing and manufacturing.

[0003] Among them, the closed cross-section composite material thin-walled rod product has attracted widespread attention and research due to its high specific stiffness, high folding ratio and low mass. The current closed cross-section composite material thin-walled rod is mainly made by secondary bonding process, that is, two single-sided composite materials (such as prepreg) are molded by the same mold respectively, and then the two edges of the two molded composite materials are bonded to form a closed cross-section composite material thin-walled rod. However, the closed cross-section composite material thin-walled rod made by the secondary bonding process will have stress concentration at the bonding surface of the two edges during the flattening and rolling process, and the bonding surface is prone to cracking and other damage over time.

[0004] Therefore, the prior art still needs to be improved and improved. SUMMARY

[0005] In view of the shortcomings of the prior art, the purpose of the present application is to provide a closed cross-section composite material thin-walled rod forming device, which aims to solve the problem of cracking and other damage of the bonding surface at the two edges of the closed cross-section composite material thin-walled rod made by the secondary bonding process in the flattening and rolling process.

[0006] The technical solution adopted by the present application to solve the technical problems is as follows:

[0007] In a first aspect, the present application provides a closed cross-section composite material thin-walled rod forming device, comprising a base, further comprising:

[0008] A material feeding module is arranged on the base and used for placing and supporting the composite material.

[0009] A forming module, which comprises a pod-shaped core mold for shaping the composite material, a pre-solidification assembly for preliminarily shaping the shaped composite material, and a hot-pressing solidification assembly for hot-pressing solidification of the preliminarily shaped composite material, the pre-solidification assembly and the hot-pressing solidification assembly are sequentially arranged on the base along the conveying direction of the composite material, one end of the pod-shaped core mold is connected with the feeding module, and the other end of the pod-shaped core mold sequentially penetrates through the pre-solidification cavity in the pre-solidification assembly and the hot-pressing solidification cavity in the hot-pressing solidification assembly;

[0010] A winding module, which is sequentially arranged in a pipeline mode on the base together with the feeding module and the forming module, and is connected with the other end of the pod-shaped core mold, and is used for winding the shaped composite material thin-walled rod.

[0011] As a further improved technical solution, the feeding module comprises a feeding assembly, a first supporting assembly and a second supporting assembly which are sequentially arranged in a pipeline mode on the base along the movement direction of the composite material;

[0012] The feeding assembly comprises a feeding bin, a main upper guide roller and a main lower guide roller, the feeding bin is arranged on the base, the main upper guide roller and the main lower guide roller are rotatably arranged in the feeding bin, and the main upper guide roller is located above the main lower guide roller, the main upper guide roller is used for conveying the upper composite material to the first supporting assembly, and the main lower guide roller is used for conveying the lower composite material to the first supporting assembly;

[0013] One end of the pod-shaped core mold is fixedly arranged on the first supporting assembly, and the first supporting assembly is used for conveying the upper composite material and the lower composite material to the top and bottom surfaces of the pod-shaped core mold, respectively;

[0014] The second supporting assembly is located below the pod-shaped core mold and is used for supporting the lower composite material so that the lower composite material tightly adheres to the bottom surface of the pod-shaped core mold before entering the pre-solidification cavity.

[0015] As a further improved technical solution, the first supporting assembly comprises a first supporting seat, a guide roller support, a secondary upper guide roller and a secondary lower guide roller;

[0016] The first support seat is arranged on the base, the guide roller support is arranged on the top side of the first support seat, and the upper and lower auxiliary guide rollers are rotatably arranged on the guide roller support. In the direction of the composite material transmission, the upper auxiliary guide roller is inclined downward, and the lower auxiliary guide roller is inclined upward. One end of the pod-shaped core mold is located between the upper and lower auxiliary guide rollers and penetrates through the guide roller support and is fixedly arranged on the top side of the first support seat.

[0017] As a further improved technical solution, the second support assembly includes a second support seat, a first rotating shaft, a second rotating shaft, and an annular conveying belt. The second support seat is arranged on the base. The first rotating shaft and the second rotating shaft are rotatably arranged in the second support seat, and the first rotating shaft is located above the second rotating shaft. The annular conveying belt is vertically sleeved on the first rotating shaft and the second rotating shaft, and is used to support the lower composite material.

[0018] As a further improved technical solution, the forming mold group further includes a post-curing assembly. The post-curing assembly includes a post-curing base arranged between the hot-pressing and curing assembly and the winding mold group. The post-curing base is arranged on the base. The post-curing assembly is provided with two symmetrically arranged post-curing female molds. A post-curing cavity is formed between the two post-curing female molds. Each post-curing female mold is provided with a guide column and a pressing block. The pressing block is movably arranged on the guide column and is arranged above the post-curing female mold. A gap for the composite material thin-walled rod to pass through is formed between the bottom side of the pressing block and the top side of the post-curing female mold. The pressing block is provided with an upper heating hole for installing a heating pipe. The post-curing female mold is provided with a lower heating hole for installing a heating pipe.

[0019] As a further improved technical solution, in the direction of the composite material movement, the pod-shaped core mold includes a positioning plate, a plastic core mold, a pre-curing core shaft, a hot-pressing and curing core shaft, and a post-curing core shaft connected in sequence. The positioning plate is arranged on the top side of the first support seat and is integrally formed with the plastic core mold. The pre-curing core shaft, the hot-pressing and curing core shaft, and the post-curing core shaft are respectively provided with a first heating hole, a second heating hole, and a third heating hole for installing a heating pipe.

[0020] Thermal insulation plates are respectively arranged between the pre-curing core shaft and the plastic core mold, between the hot-pressing and curing core shaft and the pre-curing core shaft, and between the post-curing core shaft and the hot-pressing and curing core shaft.

[0021] The outer side of the pre-cured mandrel, the hot-pressing cured mandrel and the post-cured mandrel is respectively sleeved with a pre-cured core mold, a hot-pressing cured core mold and a post-cured core mold, the pre-cured core mold is arranged in the pre-cured chamber, the hot-pressing cured core mold is arranged in the hot-pressing cured chamber, and the post-cured core mold is arranged in the post-cured chamber.

[0022] As a further improved technical solution, the pre-cured assembly comprises a pre-cured base and a main upper electric cylinder, a main upper connecting plate, a pre-cured upper female mold, a pre-cured lower female mold, a main lower connecting plate and a main lower electric cylinder arranged in the pre-cured base in sequence from top to bottom.

[0023] The main upper electric cylinder and the main lower electric cylinder are respectively arranged vertically, the pre-cured chamber is located in the pre-cured base, the main upper connecting plate, the pre-cured upper female mold, the pre-cured lower female mold and the main lower connecting plate are all arranged in the pre-cured chamber, the top side of the main upper connecting plate is connected with the bottom end of the main upper electric cylinder, the bottom side of the main upper connecting plate is connected with the pre-cured upper female mold, the bottom side of the main lower connecting plate is connected with the top end of the main lower electric cylinder, the top side of the main lower connecting plate is connected with the pre-cured lower female mold, and the bottom surface of the pre-cured upper female mold is used to press the composite material on the top surface of the pre-cured mandrel, and the top surface of the pre-cured lower female mold is used to press the composite material on the bottom surface of the pre-cured mandrel.

[0024] As a further improved technical solution, the hot-pressing cured assembly comprises a hot-pressing cured base and a vice upper electric cylinder, a vice upper connecting plate, a hot-pressing cured upper female mold, a hot-pressing cured lower female mold, a vice lower connecting plate and a vice lower electric cylinder arranged in the hot-pressing cured base in sequence from top to bottom.

[0025] The vice upper electric cylinder and the vice lower electric cylinder are respectively arranged vertically, the hot-pressing cured chamber is located in the hot-pressing cured base, the vice upper connecting plate, the hot-pressing cured upper female mold, the hot-pressing cured lower female mold and the vice lower connecting plate are all arranged in the hot-pressing cured chamber, the top side of the vice upper connecting plate is connected with the bottom end of the vice upper electric cylinder, the bottom side of the vice upper connecting plate is connected with the hot-pressing cured upper female mold, the bottom side of the vice lower connecting plate is connected with the top end of the vice lower electric cylinder, the top side of the vice lower connecting plate is connected with the hot-pressing cured lower female mold, the bottom surface of the pre-cured upper female mold is used to press the composite material on the top surface of the pre-cured mandrel, and the top surface of the pre-cured lower female mold is used to press the composite material on the bottom surface of the pre-cured mandrel.

[0026] As a further improved technical solution, the winding mold group comprises a third supporting assembly and a winding assembly, the third supporting assembly is located below the end of the pod-shaped core mold away from the feeding mold group, and the winding assembly is located on the side of the third supporting assembly away from the feeding mold group.

[0027] The third support assembly comprises a third support base, a support plate, a slide rod, a precision lead screw and a support roller; the third support base is arranged on the base; the slide rod is vertically arranged on the top side of the third support base; the support plate is arranged on the slide rod in a liftable manner; the precision lead screw is connected with the third support base and the support plate at two ends respectively, and is used for adjusting the height of the support plate; and the support roller is rotatably arranged on the top side of the support plate and is used for supporting the composite thin-walled rod on the pod-shaped core mold.

[0028] The winding assembly comprises a winding base, a guide roller and a winding roller; the winding base is arranged on the base; the guide roller and the winding roller are rotatably horizontally arranged in the winding base respectively; the winding roller is arranged at a higher horizontal level than the guide roller; and the winding roller is connected with a motor and is driven by the motor to wind the formed composite thin-walled rod.

[0029] As a further improved technical scheme, a demolding film storage area is formed between the positioning plate and the shaping core mold, and an inner demolding film for assisting the upper and lower composite materials in demolding is arranged on the demolding film storage area.

[0030] Compared with the prior art, the embodiment of the present application has the following advantages:

[0031] The present application provides power to drive the composite material by the winding module, that is, the initial end of the composite material is manually pulled through the forming module and wound on the winding module before the forming module works, and then the winding module and the forming module are started, the composite material is shaped by using the pod-shaped core mold, and then the upper and lower two sides of the composite material are integrally extruded and hot-pressed by using the pre-solidification assembly and the hot-pressing solidification assembly, so that the two sides of the formed composite thin-walled rod are integrated, thereby reducing the influence of stress concentration on the two sides, making it difficult for the two sides of the composite thin-walled rod to crack, enhancing the flexibility and strength of the composite thin-walled rod, and improving the production efficiency of the composite thin-walled rod compared with the secondary adhesive forming process by using the closed cross-section composite thin-walled rod forming equipment provided by the present application. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 It is a perspective structural schematic view of the closed cross-section composite thin-walled rod forming equipment provided by the present application;

[0033] Figure 2 It is a side structural schematic view of the closed cross-section composite thin-walled rod forming equipment provided by the present application;

[0034] Figure 3 It is a perspective structural schematic view of the base in the present application;

[0035] Figure 4 The schematic diagram of the three-dimensional structure of the feeding assembly in the application;

[0036] Figure 5 The schematic diagram of the assembly structure of the first supporting assembly, the second supporting assembly, the third supporting assembly and the pod-shaped core mold in the application;

[0037] Figure 6 The schematic diagram of the three-dimensional structure of the second supporting assembly in the application;

[0038] Figure 7 The schematic diagram of the three-dimensional structure of the post-curing assembly in the application;

[0039] Figure 8 The schematic diagram of the three-dimensional structure of the post-curing assembly in the application; Figure 7 The enlarged schematic diagram of A in the application;

[0040] Figure 9 The exploded view of the pod-shaped core mold in the application;

[0041] Figure 10 The schematic diagram of the three-dimensional structure of the pre-curing assembly in the application;

[0042] Figure 11 The schematic diagram of the three-dimensional structure of the hot-pressing curing assembly in the application;

[0043] Figure 12 The schematic diagram of the structure when the pod-shaped core mold in the application is clamped by the pre-curing upper mold, the pre-curing lower mold, the hot-pressing curing upper mold and the hot-pressing curing lower mold;

[0044] Figure 13 The schematic diagram of the three-dimensional structure of the winding assembly when winding the closed cross-section composite thin-walled rod in the application;

[0045] Figure 14 The sectional view of the internal release film in the application.

[0046] In the figure: 1, base; 2, feeding module; 21, feeding assembly; 211, feeding bin; 212, main upper layer guide roller; 213, main lower layer guide roller; 214, driven guide roller; 22, first support assembly; 221, first support seat; 222, guide roller support; 223, auxiliary upper layer guide roller; 224, auxiliary lower layer guide roller; 23, second support assembly; 231, second support seat; 232, first rotating shaft; 233, second rotating shaft; 3, forming module; 31, pod-shaped core mold; 311, positioning plate; 3111, demolding film storage area; 3112, scale line; 312, shaping core mold; 313, pre-solidification core shaft; 3131, first heating hole; 314, hot-pressing solidification core shaft; 3141, second heating hole; 315, post-solidification core shaft; 3151, third heating hole; 316, heat insulation plate; 317, pre-solidification core mold; 318, hot-pressing solidification core mold; 319, post-solidification core mold; 32, pre-solidification assembly; 321, pre-solidification chamber; 322, pre-solidification base; 323, main upper electric cylinder; 324, main upper connecting plate; 325, pre-solidification upper female mold; 326, pre-solidification lower female mold; 327, main lower connecting plate; 328, main lower electric cylinder; 33, hot-pressing solidification assembly; 331, hot-pressing solidification chamber; 332, hot-pressing solidification base; 333, auxiliary upper electric cylinder; 334, auxiliary upper connecting plate; 335, hot-pressing solidification upper female mold; 336, hot-pressing solidification lower female mold; 337, auxiliary lower connecting plate; 338, auxiliary lower electric cylinder; 34, post-solidification assembly; 341, post-solidification base; 342, post-solidification female mold; 3421, lower layer heating hole; 343, post-solidification chamber; 344, guide column; 345, pressing block; 3451, upper layer heating hole; 346, gap; 347, linear bearing; 348, horizontal panel; 4, winding module; 41, third support assembly; 411, third support seat; 412, support plate; 413, sliding rod; 414, precision lead screw; 415, support roller; 42, winding assembly; 421, winding base; 422, guide roller; 423, winding roller; 5, inner demolding film; 51, main demolding film; 52, auxiliary demolding film; 53, adhesive. DETAILED DESCRIPTION

[0047] Embodiments of the present application are described in detail below with reference to the attached drawing figures, wherein the same or like reference numerals and characters designate the same or like components throughout the drawings. The embodiments described below are exemplary and are not intended to be limiting of the present application.

[0048] Embodiments:

[0049] As Figures 1-14The closed cross-section composite thin-walled rod forming equipment comprises a base 1, further comprises: a feeding module 2 arranged on the base 1 and used for placing and supporting the composite material; a forming module 3 comprising a pod-shaped core mold 31 used for shaping the composite material, a pre-solidification assembly used for preliminarily shaping the shaped composite material, and a hot-pressing solidification assembly 33 used for hot-pressing and solidifying the preliminarily shaped composite material; the pre-solidification assembly and the hot-pressing solidification assembly 33 are sequentially arranged on the base 1 along the conveying direction of the composite material; one end of the pod-shaped core mold 31 is connected with the feeding module 2, and the other end of the pod-shaped core mold 31 sequentially penetrates through a pre-solidification cavity 321 in the pre-solidification assembly and a hot-pressing solidification cavity 331 in the hot-pressing solidification assembly 33; and a winding module 4 sequentially arranged in a pipeline mode on the base 1 and connected with the other end of the pod-shaped core mold 31 and used for winding the formed composite thin-walled rod.

[0050] As Figures 1-3As shown, in the embodiment, the closed cross-section composite thin-walled rod forming device comprises a base 1, a feeding die set 2, a forming die set 3 and a winding die set 4 arranged on the base 1, and the feeding die set 2, the forming die set 3 and the winding die set 4 are arranged in a pipeline manner on the base 1 along the processing direction of the composite material, the feeding die set 2 is used for placing the composite material, the forming die set 3 is used for processing and forming the composite material, and the winding die set 4 is used for winding the processed and formed composite thin-walled rod; specifically, the forming die set 3 comprises a pod-shaped core die 31 used for shaping the composite material, a pre-solidification assembly used for preliminarily shaping the shaped composite material, and a hot-pressing solidification assembly 33 used for hot-pressing and solidifying the preliminarily shaped composite material, the pre-solidification assembly and the hot-pressing solidification assembly 33 are arranged in sequence on the base 1 along the conveying direction of the composite material, the left end of the pod-shaped core die 31 is connected with the feeding die set 2, the right end of the pod-shaped core die 31 penetrates the pre-solidification cavity 321 in the pre-solidification assembly and the hot-pressing solidification cavity 331 in the hot-pressing solidification assembly 33 in sequence, and is connected with the winding die set 4. The composite material is driven to move by the power provided by the winding die set 4, that is, the initial end of the composite material is manually pulled through the forming die set 3 and wound on the winding die set 4 before the forming die set 3 works, then the winding die set 4 and the forming die set 3 are started, the composite material is shaped by using the pod-shaped core die 31, then the upper and lower two sides of the composite material are integrally extruded and hot-pressed by using the pre-solidification assembly and the hot-pressing solidification assembly 33, and the processed and formed composite thin-walled rod has two integrated sides, so that the influence of stress concentration on the two sides is reduced, the two sides of the composite thin-walled rod are difficult to crack, the flexibility and strength of the composite thin-walled rod are enhanced, and the production efficiency of the composite thin-walled rod can be improved by using the closed cross-section composite thin-walled rod forming device compared with the secondary adhesive forming process.

[0051] As Figures 4-5As shown, as a further scheme, the feeding module 2 comprises a feeding assembly 21, a first supporting assembly 22 and a second supporting assembly 23 arranged in a pipeline manner on the base 1 in sequence along the movement direction of the composite material; the feeding assembly 21 comprises a feeding bin 211, a main upper layer guide roller 212 and a main lower layer guide roller 213; the feeding bin 211 is arranged on the base 1, the main upper layer guide roller 212 and the main lower layer guide roller 213 are rotatably arranged in the feeding bin 211 respectively, and the main upper layer guide roller 212 is located above the main lower layer guide roller 213; the main upper layer guide roller 212 is used for conveying the upper layer composite material to the first supporting assembly 22, and the main lower layer guide roller 213 is used for conveying the lower layer composite material to the first supporting assembly 22; the left end of the pod-shaped core mold 31 is fixedly arranged on the first supporting assembly 22, and the first supporting assembly 22 is used for conveying the upper layer composite material and the lower layer composite material to the top and bottom surfaces of the pod-shaped core mold 31 respectively; the second supporting assembly 23 is located below the pod-shaped core mold 31 and is used for supporting the lower layer composite material so that the lower layer composite material tightly adheres to the bottom surface of the pod-shaped core mold 31 before entering the pre-curing chamber 321. Specifically, in the feeding bin 211, three main upper layer guide rollers 212 and three main lower layer guide rollers 213 are arranged respectively, the three main upper layer guide rollers 212 are uniformly distributed in a row along the horizontal direction, the three main lower layer guide rollers 213 are uniformly distributed in a row along the horizontal direction and are opposite to the three main upper layer guide rollers 212 respectively, six driven guide rollers 214 are arranged between the main upper layer guide rollers 212 and the main lower layer guide rollers 213, both ends of each driven guide roller 214 are rotatably connected to the feeding bin 211, the six driven guide rollers 214 are arranged in two layers in the feeding bin 211, an acute angle is formed between the upper layer driven guide rollers 214 and the lower layer driven guide rollers 214, and the acute angle is open to the first supporting assembly 22; for example, the first driven guide roller 214 is arranged at the left end in the feeding bin 211, the second driven guide roller 214 is arranged above the right of the first driven guide roller 214, the third driven guide roller 214 is arranged above the right of the second driven guide roller 214, the fourth driven guide roller 214 is arranged below the right of the first driven guide roller 214, the fifth driven guide roller 214 is arranged below the right of the fourth driven guide roller 214, and the sixth driven guide roller 214 is arranged below the right of the fifth driven guide roller 214; the feeding assembly 21 in the embodiment can separate the materials in each layer in the feeding bin 211, so as to avoid the materials adhering together after entering the feeding bin 211, and the position of any layer of material can be adjusted in time if the position is not aligned.Meanwhile, the discharging assembly 21 further comprises dampers (not shown) and a tension detector (not shown), which are both conventional devices, and the dampers are provided in multiple numbers, one in each of the main upper guide roller 212 and the main lower guide roller 213, and the tension detector is connected with the driven guide roller 214, for detecting the tension of the composite material, because the composite material needs a certain tension to not fall downward and to facilitate processing, when the tension does not meet the requirement, the resistance of the rotation shafts in the main upper guide roller 212 and the main lower guide roller 213 can be adjusted through the dampers to make the tension meet the requirement.

[0052] As a further solution, the first support assembly 22 comprises a first support base 221, a guide roller support 222, a secondary upper guide roller 223 and a secondary lower guide roller 224; the first support base 221 is arranged on the base 1, the guide roller support 222 is arranged on the right top of the first support base 221, and the secondary upper guide roller 223 and the secondary lower guide roller 224 are rotatably arranged on the guide roller support 222, respectively, and are inclined downward and upward along the composite material conveying direction, respectively, and one end of the pod-shaped core mold 31 is arranged between the secondary upper guide roller 223 and the secondary lower guide roller 224 and penetrates through the guide roller support 222 and is fixedly arranged on the top side of the first support base 221. In the present embodiment, the secondary upper guide roller 223 is used for receiving the upper layer of composite material conveyed by the main upper guide roller 212, and supporting and guiding the upper layer of composite material to adhere to the top surface of the left end of the pod-shaped core mold 31, and the secondary lower guide roller 224 is used for receiving the lower layer of composite material conveyed by the main lower guide roller 213, and supporting and guiding the lower layer of composite material to adhere to the bottom surface of the left end of the pod-shaped core mold 31.

[0053] As Figure 6As shown, in the present embodiment, the second support assembly 23 comprises a second support base 231, a first rotating shaft 232, a second rotating shaft 233 and an annular conveyor belt (not shown). The second support base 231 is arranged on the base 1. The first rotating shaft 232 and the second rotating shaft 233 are rotatably arranged in the second support base 231. The first rotating shaft 232 is arranged above the second rotating shaft 233. The annular conveyor belt is vertically sleeved on the first rotating shaft 232 and the second rotating shaft 233, and is used to support the lower layer of composite material. Specifically, the second support base 231 is arranged below the pod-shaped core mold 31. The first rotating shaft 232 and the second rotating shaft 233 are provided with a layer of annular conveyor belt. The annular conveyor belt is made of soft silicone rubber. The lower layer of composite material is pressed against the bottom surface of the pod-shaped core mold 31 by the annular conveyor belt. When the lower layer of composite material contacts the annular conveyor belt, the lower layer of composite material drives the annular conveyor belt, the first rotating shaft 232 and the second rotating shaft 233 to rotate. At the same time, the first rotating shaft 232 is a variable cross-section rotating shaft. The top and bottom surfaces of the left end of the pod-shaped core mold 31 are arc surfaces. The center of the bottom surface protrudes downward. Therefore, the use of the variable cross-section rotating shaft can better attach the lower layer of composite material to the pod-shaped core mold 31.

[0054] As Figures 7-8As shown, as a further scheme, the forming module 3 further comprises a post-curing assembly 34, which comprises a post-curing base 341 arranged between the hot-pressing and curing assembly 33 and the winding module 4, the post-curing base 341 being arranged on the base 1, two symmetric post-curing female molds 342 being arranged on the post-curing assembly 34, a post-curing cavity 343 being formed between the two post-curing female molds 342, a guide column 344 and a pressing block 345 being arranged on each post-curing female mold 342, the pressing block 345 being slidably arranged on the guide column 344 and above the post-curing female mold 342, a gap 346 for the passage of the side edges of the composite thin-walled rod member being formed between the bottom side of the pressing block 345 and the top side of the post-curing female mold 342, and an upper heating hole 3451 for installing a heating pipe being arranged in the pressing block 345, and a lower heating hole 3421 for installing a heating pipe being arranged in the post-curing female mold 342. Specifically, one side of the top surface of the post-curing female mold 342 is provided with a downwardly curved arc surface, one side of the bottom surface of the pressing block 345 is provided with an upwardly curved arc surface, the arc surface on the post-curing female mold 342 is opposite to the arc surface on the pressing block 345 and forms the gap 346, when the closed cross-section composite thin-walled rod member is conveyed into the post-curing cavity 343, the left and right side edges of the closed cross-section composite thin-walled rod member are respectively located in the two opposite gaps 346, and the pressing block 345 slides on the guide column 344 by virtue of its own gravity, when the closed cross-section composite thin-walled rod member slides in the gap 346, the pressing block 345 is lifted by the closed cross-section composite thin-walled rod member, and the pressing block 345 presses down the side edges of the closed cross-section composite thin-walled rod member, and the pressing block 345 descends when the closed cross-section composite thin-walled rod member leaves the post-curing cavity 343. Meanwhile, the post-curing assembly 34 further comprises a linear bearing 347 and a horizontal panel 348, the top side of each pressing block 345 is respectively provided with a plurality of linear bearings 347, and the top ends of each linear bearing 347 are located at the same horizontal height, the bottom side of the horizontal panel 348 is provided with a plurality of grooves (not shown), the horizontal panel 348 is fixed by being clamped with the top ends of each linear bearing 347 through each groove, and the depth of each groove is constant, when the horizontal panel 348 is arranged on the linear bearing 347 and cannot shake, it indicates that the pressing blocks 345 remain horizontal, the pressing forces applied by the two pressing blocks 345 are consistent after the pressing blocks 345 remain horizontal, so that the left and right side edges of the closed cross-section composite thin-walled rod member are uniformly stressed.

[0055] As Figure 9As shown, as a further solution, along the composite material movement direction, the pod-shaped core mold 31 comprises sequentially connected positioning plate 311, plastic core mold 312, pre-curing core shaft 313, hot-pressing curing core shaft 314 and post-curing core shaft 315, the connection mode is conventional screw connection, the positioning plate 311 is arranged on the top side of the first support base 221 and is integrally formed with the plastic core mold 312, the pre-curing core shaft 313, the hot-pressing curing core shaft 314 and the post-curing core shaft 315 are respectively provided with first heating hole 3131, second heating hole and third heating hole 3151 for installing heating pipes; the pre-curing core shaft 313 and the plastic core mold 312, the hot-pressing curing core shaft 314 and the pre-curing core shaft 313 and the post-curing core shaft 315 and the hot-pressing curing core shaft 314 are respectively provided with heat insulation plates 316, because the temperatures in the pre-curing cavity 321, the hot-pressing curing cavity 331 and the post-curing cavity 343 are different, the heat insulation plates 316 are needed for heat insulation; the outer sides of the pre-curing core shaft 313, the hot-pressing curing core shaft 314 and the post-curing core shaft 315 are respectively sleeved with pre-curing core mold 317, hot-pressing curing core mold 318 and post-curing core mold 319, the pre-curing core mold 317 is arranged in the pre-curing cavity 321, the hot-pressing curing core mold 318 is arranged in the hot-pressing curing cavity 331, and the post-curing core mold 319 is arranged in the post-curing cavity 343; the upper and lower two layers of composite materials form a closed cross section through the closing of the core mold and the cavity mold, and details are shown in Figure 12 .

[0056] As Figure 10As shown, in the present embodiment, the pre-curing assembly comprises a pre-curing base 322, a main upper electric cylinder 323, a main upper connecting plate 324, a pre-curing upper female mold 325, a pre-curing lower female mold 326, a main lower connecting plate 327 and a main lower electric cylinder 328 which are sequentially arranged on the pre-curing base 322 from top to bottom; the main upper electric cylinder 323 and the main lower electric cylinder 328 are vertically arranged, the pre-curing cavity 321 is located in the pre-curing base 322, the main upper connecting plate 324, the pre-curing upper female mold 325, the pre-curing lower female mold 326 and the main lower connecting plate 327 are all arranged in the pre-curing cavity 321, the top side of the main upper connecting plate 324 is connected with the bottom end of the main upper electric cylinder 323, the bottom side of the main upper connecting plate 324 is connected with the pre-curing upper female mold 325, the bottom side of the main lower connecting plate 327 is connected with the top end of the main lower electric cylinder 328, and the top side of the main lower connecting plate 327 is connected with the pre-curing lower female mold 326, the bottom surface of the pre-curing upper female mold 325 is used to press the composite material on the top surface of the pre-curing mandrel 313, and the top surface of the pre-curing lower female mold 326 is used to press the composite material on the bottom surface of the pre-curing mandrel 313. Specifically, the main upper electric cylinder 323 can drive the main upper connecting plate 324 and the pre-curing upper female mold 325 to move up and down, and the main upper connecting plate 324 and the pre-curing upper female mold 325 are detachably connected, for example, by positioning pins or bolts; the main lower electric cylinder 328 can drive the main lower connecting plate 327 and the pre-curing lower female mold 326 to move up and down, and the main lower connecting plate 327 and the pre-curing lower female mold 326 are detachably connected, for example, by positioning pins or bolts, so as to facilitate the replacement of the pod-shaped core mold 31. The bottom surface of the pre-curing upper female mold 325 and the top surface of the pre-curing lower female mold 326 are both curved surfaces adapted to the shape of the pre-curing core mold.

[0057] As Figure 11As shown, as a further solution, the hot-pressing and curing assembly 33 comprises a hot-pressing and curing base 332, a sub-upper electric cylinder 333, a sub-upper connecting plate 334, a hot-pressing and curing upper female mold 335, a hot-pressing and curing lower female mold 336, a sub-lower connecting plate 337 and a sub-lower electric cylinder 338 arranged in sequence from top to bottom on the hot-pressing and curing base 332; the sub-upper electric cylinder 333 and the sub-lower electric cylinder 338 are vertically arranged respectively, the hot-pressing and curing cavity 331 is located in the hot-pressing and curing base 332, the sub-upper connecting plate 334, the hot-pressing and curing upper female mold 335, the hot-pressing and curing lower female mold 336 and the sub-lower connecting plate 337 are all arranged in the hot-pressing and curing cavity 331, the top side of the sub-upper connecting plate 334 is connected with the bottom end of the sub-upper electric cylinder 333, the bottom side of the sub-upper connecting plate 334 is connected with the hot-pressing and curing upper female mold 335, the bottom side of the sub-lower connecting plate 337 is connected with the top end of the sub-lower electric cylinder 338, and the top side of the sub-lower connecting plate 337 is connected with the hot-pressing and curing lower female mold 336, the bottom surface of the pre-curing upper female mold 325 is used to compress the composite material on the top surface of the pre-curing mandrel 313, and the top surface of the pre-curing lower female mold 326 is used to compress the composite material on the bottom surface of the pre-curing mandrel 313. Specifically, the sub-upper electric cylinder 333 can drive the sub-upper connecting plate 334 and the hot-pressing and curing upper female mold 335 to move up and down, and the sub-upper connecting plate 334 and the hot-pressing and curing upper female mold are detachably connected; the sub-lower electric cylinder 338 can drive the sub-lower connecting plate 337 and the hot-pressing and curing lower female mold 336 to move up and down, and the sub-lower connecting plate 337 and the hot-pressing and curing lower female mold 336 are detachably connected. The shape of the bottom surface of the hot-pressing and curing upper female mold 335 and the shape of the top surface of the hot-pressing and curing lower female mold 336 are both curved surfaces adapted to the shape of the hot-pressing and curing core mold.

[0058] As Figure 13As shown, as a further solution, the winding module 4 comprises a third support assembly 41 located below the end of the pod-shaped core mold 31 away from the feeding module 2 and a winding assembly located on the side of the third support assembly 41 away from the feeding module 2; the third support assembly 41 comprises a third support base 411, a support plate 412, a slide rod 413, a precision lead screw and a support roller; the third support base 411 is arranged on the base 1, the slide rod 413 is arranged vertically on the top side of the third support base 411, the support plate 412 is arranged in a liftable manner on the slide rod 413, the precision lead screw is connected with the third support base 411 and the support plate 412 at both ends respectively for adjusting the height of the support plate 412, and the support roller is arranged rotatably on the top side of the support plate 412 and is used for supporting the composite thin-walled rod on the pod-shaped core mold 31; specifically, the precision lead screw is an existing device, which is used for adjusting the height of the support plate 412 and the support roller, has a certain influence on the tension of the composite material, and is used for guiding the winding of the closed-section composite thin-walled rod after forming.

[0059] The winding assembly comprises a winding base arranged on the base 1, a guide roller 422 and a winding roller 423 arranged rotatably and horizontally in the winding base respectively, the winding roller 423 is arranged at a higher level than the guide roller 422, and the winding roller 423 is connected with a motor (not shown) and is driven by the motor to wind the composite thin-walled rod after forming. Before using the device provided by the application, each layer of composite material needs to be manually threaded through the feeding module 2, the forming module 3 and fixed on the winding roller 423 of the winding module 4, and the winding roller 423 is driven to wind each layer of composite material by the motor.

[0060] As shown in the drawings, Figure 14The inner release film 5 is formed by one release film with a cross-section bent into a pod shape, the adhesive 53 is arranged on the outside of both sides of the main release film 51, and then the two ends of the auxiliary release film 52 are adhered to the adhesive 53, so as to suture the main release film 51; the cross-sectional circumference of the inner release film 5 in the embodiment is consistent with the cross-sectional circumference of the closed cross-section composite thin-walled rod, and before the composite material is processed, the inner release film 5 needs to be sleeved from the right end of the pod-shaped core mold 31 and moved to the left to the release film storage area 3111 for folding; when the upper and lower two layers of composite materials contact the inner release film 5, the inner release film 5 is driven to slide together, which is beneficial to the release of the closed cross-section composite thin-walled rod, and the closed cross-section composite thin-walled rod after being manufactured contains the inner release film 5, and the inner release film 5 can be taken out in the later period. Meanwhile, the top surface of the shaping core mold 312 is also provided with a scale line 3112, which is arranged on the center line of the top surface of the shaping core mold 312 along the moving direction of the composite thin-walled rod, and details are shown in Figure 12 When the inner release film 5 is installed in the release film storage area 3111, the gap between the two ends of the main release film 51 needs to be aligned with the scale line 3112, at this time, the middle part of the auxiliary release film 52 is also aligned with the scale line 3112, when the composite thin-walled rod is deflected in the circumferential direction during winding or processing, the gap between the two ends of the main release film 51 and the middle part of the auxiliary release film 52 will also be deflected, that is, the gap between the two ends of the main release film 51 and the middle part of the auxiliary release film 52 are offset at this time, which needs to be manually corrected, so as to ensure that the quality of the closed cross-section composite thin-walled rod after processing meets the requirements, therefore, by adding the scale line 3112 on the top surface of the shaping core mold 312, the quality of the closed cross-section composite thin-walled rod can be guaranteed.

[0061] In summary, the embodiment of the present application provides a closed cross-section composite thin-walled rod forming equipment, which comprises a base 1 and further comprises: a feeding module 2 arranged on the base 1 and used for placing and supporting the composite material; a forming module 3 comprising a pod-shaped core mold 31 used for shaping the composite material, a pre-solidification assembly used for preliminarily shaping the shaped composite material, and a hot-pressing solidification assembly 33 used for hot-pressing and solidifying the preliminarily shaped composite material, wherein the pre-solidification assembly and the hot-pressing solidification assembly 33 are sequentially arranged on the base 1 along the composite material conveying direction, one end of the pod-shaped core mold 31 is connected with the feeding module 2, and the other end of the pod-shaped core mold 31 sequentially penetrates through a pre-solidification cavity 321 in the pre-solidification assembly and a hot-pressing solidification cavity 331 in the hot-pressing solidification assembly 33; and a winding module 4 sequentially arranged in a pipeline mode on the base 1 with the feeding module 2 and the forming module 3, and connected with the other end of the pod-shaped core mold 31 and used for winding the formed composite thin-walled rod. The winding module 4 is driven to move the composite material, i.e., the initial end of the composite material is manually pulled through the forming module 3 and wound on the winding module 4 before the forming module 3 works, and then the winding module 4 and the forming module 3 are started. The composite material is shaped by using the pod-shaped core mold 31, and then the upper and lower two sides of the composite material are integrally extruded and hot-pressed by using the pre-solidification assembly and the hot-pressing solidification assembly 33, so that the formed composite thin-walled rod has two integrated sides, thereby reducing the influence of stress concentration on the two sides, making the two sides of the composite thin-walled rod difficult to crack, enhancing the flexibility and strength of the composite thin-walled rod, and improving the production efficiency of the composite thin-walled rod compared with the secondary adhesive forming process by using the closed cross-section composite thin-walled rod forming equipment.

[0062] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0063] In addition, the terms "first", "second", etc. are used only for descriptive purposes and do not connote or imply any relative importance or imply an order or sequence in which such features could be implemented. Thus, a feature defined with "first", "second", etc. can include at least one of the features, explicitly or implicitly.

[0064] In the present application, unless specifically defined otherwise, the terms "mounting", "connected", "connecting", "fixed", "fixing", etc. are to be construed as broad terms, for example, they can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection via intermediate medium; can be internal communication between two elements, or interaction between two elements, unless specifically defined otherwise. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0065] In the present application, unless specifically defined otherwise, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0066] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there can be an intermediate element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or there can be an intermediate element. The terms "vertical", "horizontal", "up", "down", "left", "right", and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0067] Of course, the above description of the embodiments of the present application is more detailed, but it cannot be understood as a limitation on the protection scope of the present application. The present application can have other various implementations. Based on the present implementation, other implementations obtained by those skilled in the art without any creative labor are within the scope of protection of the present application. The protection scope of the present application is subject to the appended claims.

Claims

1. A closed cross-section composite thin-walled rod forming apparatus comprising a base, characterised in that, Also comprising: a material feeding module arranged on the base for placing and supporting the composite material; a forming module including a pod-shaped core mold for shaping the composite material, a pre-solidification assembly for preliminarily shaping the shaped composite material, and a hot-pressing solidification assembly for hot-pressing solidification of the preliminarily shaped composite material, the pre-solidification assembly and the hot-pressing solidification assembly being sequentially arranged on the base along the conveying direction of the composite material, one end of the pod-shaped core mold being connected to the material feeding module, and the other end of the pod-shaped core mold sequentially penetrating through the pre-solidification cavity in the pre-solidification assembly and the hot-pressing solidification cavity in the hot-pressing solidification assembly; a winding module sequentially arranged in a flow line mode on the base along with the material feeding module and the forming module, and connected to the other end of the pod-shaped core mold for winding the formed composite material thin-walled rod; the material feeding module includes a material feeding assembly, a first supporting assembly, and a second supporting assembly sequentially arranged in a flow line mode on the base along the movement direction of the composite material, one end of the pod-shaped core mold being fixedly arranged on the first supporting assembly, the first supporting assembly being used for conveying the upper and lower composite materials to the top and bottom surfaces of the pod-shaped core mold, respectively, and the second supporting assembly being arranged below the pod-shaped core mold for supporting the lower composite material so as to make the lower composite material tightly adhere to the bottom surface of the pod-shaped core mold before entering the pre-solidification cavity; the first supporting assembly includes a first supporting seat, a guide roller support, a secondary upper guide roller, and a secondary lower guide roller; the forming module further includes a post-solidification assembly, the post-solidification assembly including a post-solidification base arranged between the hot-pressing solidification assembly and the winding module, the post-solidification base being arranged on the base, the post-solidification assembly being provided with two symmetric post-solidification female molds, a post-solidification cavity being formed between the two post-solidification female molds, each post-solidification female mold being provided with a guide column and a pressing block, the pressing block being movably arranged on the guide column and above the post-solidification female mold, a gap for the composite material thin-walled rod to pass through being formed between the bottom side of the pressing block and the top side of the post-solidification female mold, the pressing block being provided with an upper heating hole for installing a heating pipe, and the post-solidification female mold being provided with a lower heating hole for installing a heating pipe; along the movement direction of the composite material, the pod-shaped core mold includes a positioning plate, a shaping core mold, a pre-solidification core shaft, a hot-pressing solidification core shaft, and a post-solidification core shaft connected in sequence, the positioning plate being arranged on the top side of the first supporting seat and integrally formed with the shaping core mold, the pre-solidification core shaft, the hot-pressing solidification core shaft, and the post-solidification core shaft being respectively provided with a first heating hole, a second heating hole, and a third heating hole for installing a heating pipe; heat insulation plates are respectively arranged between the pre-solidification core shaft and the shaping core mold, between the hot-pressing solidification core shaft and the pre-solidification core shaft, and between the post-solidification core shaft and the hot-pressing solidification core shaft; The outer sides of the pre-curing mandrel, the hot-pressing curing mandrel and the post-curing mandrel are respectively sleeved with a pre-curing core mold, a hot-pressing curing core mold and a post-curing core mold, the pre-curing core mold is arranged in the pre-curing chamber, the hot-pressing curing core mold is arranged in the hot-pressing curing chamber, and the post-curing core mold is arranged in the post-curing chamber.

2. The closed cross-section composite thin-walled rod forming apparatus of claim 1, wherein, The feeding assembly comprises a feeding bin, a main upper guide roller and a main lower guide roller; the feeding bin is arranged on the base, the main upper guide roller and the main lower guide roller are rotatably arranged in the feeding bin, and the main upper guide roller is located above the main lower guide roller; the main upper guide roller is used for conveying the upper layer of composite material to the first support assembly, and the main lower guide roller is used for conveying the lower layer of composite material to the first support assembly.

3. The closed cross-section composite thin-walled rod forming apparatus of claim 2, wherein, The first support seat is arranged on the base, the guide roller support is arranged on one side of the top of the first support seat, and the auxiliary upper guide roller and the auxiliary lower guide roller are rotatably arranged on the guide roller support; along the conveying direction of the composite material, the auxiliary upper guide roller is downwardly inclined, and the auxiliary lower guide roller is upwardly inclined; one end of the pod-shaped core mold is located between the auxiliary upper guide roller and the auxiliary lower guide roller and penetrates through the guide roller support and is fixedly arranged on the top side of the first support seat.

4. The closed cross-section composite thin-walled rod forming apparatus of claim 3, wherein, The second support assembly comprises a second support seat, a first rotating shaft, a second rotating shaft and an annular conveying belt; the second support seat is arranged on the base, the first rotating shaft and the second rotating shaft are rotatably arranged in the second support seat, and the first rotating shaft is located above the second rotating shaft; the annular conveying belt is vertically sleeved on the first rotating shaft and the second rotating shaft, and is used for supporting the lower layer of composite material.

5. The closed cross-section composite thin-walled rod forming apparatus of claim 1, wherein, The pre-curing assembly comprises a pre-curing base and a main upper electric cylinder, a main upper connecting plate, a pre-curing upper female mold, a pre-curing lower female mold, a main lower connecting plate and a main lower electric cylinder which are sequentially arranged on the pre-curing base from top to bottom; The main upper electric cylinder and the main lower electric cylinder are vertically arranged, the pre-curing chamber is located in the pre-curing base, the main upper connecting plate, the pre-curing upper female mold, the pre-curing lower female mold and the main lower connecting plate are arranged in the pre-curing chamber, the top side of the main upper connecting plate is connected with the bottom end of the main upper electric cylinder, the bottom side of the main upper connecting plate is connected with the pre-curing upper female mold, the bottom side of the main lower connecting plate is connected with the top end of the main lower electric cylinder, the top side of the main lower connecting plate is connected with the pre-curing lower female mold, and the bottom surface of the pre-curing upper female mold is used for pressing the composite material on the top surface of the pre-curing mandrel, and the top surface of the pre-curing lower female mold is used for pressing the composite material on the bottom surface of the pre-curing mandrel.

6. The closed cross-section composite thin-walled rod forming apparatus of claim 1, wherein, The hot-pressing curing assembly comprises a hot-pressing curing base and a auxiliary upper electric cylinder, a auxiliary upper connecting plate, a hot-pressing curing upper female mold, a hot-pressing curing lower female mold, a auxiliary lower connecting plate and a auxiliary lower electric cylinder which are sequentially arranged on the hot-pressing curing base from top to bottom; The auxiliary upper cylinder and the auxiliary lower cylinder are vertically arranged, the hot-pressing curing cavity is located in the hot-pressing curing base, the auxiliary upper connecting plate, the hot-pressing curing upper female die, the hot-pressing curing lower female die and the auxiliary lower connecting plate are arranged in the hot-pressing curing cavity, the top side of the auxiliary upper connecting plate is connected with the bottom end of the auxiliary upper cylinder, the bottom side of the auxiliary upper connecting plate is connected with the hot-pressing curing upper female die, the bottom side of the auxiliary lower connecting plate is connected with the top end of the auxiliary lower cylinder, the top side of the auxiliary lower connecting plate is connected with the hot-pressing curing lower female die, and the bottom surface of the pre-curing upper female die is used for pressing the composite material on the top surface of the pre-curing mandrel, and the top surface of the pre-curing lower female die is used for pressing the composite material on the bottom surface of the pre-curing mandrel.

7. The closed cross-section composite thin-walled rod forming apparatus of claim 1, wherein, The winding module comprises a third supporting assembly and a winding assembly, the third supporting assembly is located below one end of the pod-shaped core mold away from the feeding module, and the winding assembly is located on the side of the third supporting assembly away from the feeding module. The third supporting assembly comprises a third supporting seat, a supporting plate, a sliding rod, a precision lead screw and a supporting roller, the third supporting seat is arranged on the base, the sliding rod is vertically arranged on the top side of the third supporting seat, the supporting plate is arranged on the sliding rod in a lifting manner, the precision lead screw is connected with the third supporting seat and the supporting plate at both ends, and is used for adjusting the height of the supporting plate, and the supporting roller is rotatably arranged on the top side of the supporting plate and is used for supporting the composite thin-walled rod on the pod-shaped core mold. The winding assembly comprises a winding base, a guide roller and a winding roller, the winding base is arranged on the base, the guide roller and the winding roller are rotatably and horizontally arranged in the winding base, the horizontal height of the winding roller is higher than that of the guide roller, the winding roller is connected with a motor and is driven by the motor to wind the formed composite thin-walled rod.

8. The closed cross-section composite thin-walled rod forming apparatus of claim 1, wherein, A demolding film storage area is formed between the positioning plate and the shaping core mold, and an inner demolding film for assisting the upper composite material and the lower composite material in demolding is arranged on the demolding film storage area.

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