Manufacturing equipment and method of thermoplastic composite truss
By designing thermoplastic composite truss manufacturing equipment and using the heating forming module and the hot melt docking module for hot melt connection, the problem of lack of thermoplastic composite truss equipment in the prior art is solved, and stable truss structure manufacturing and efficient thermal control are achieved. manage.
Patent Information
- Application Number
- CN202411283211.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-13
- Publication Date
- 2024-12-13
AI Technical Summary
The prior art lacks equipment for manufacturing trusses using thermoplastic composite materials as raw materials, resulting in the inability to stably obtain the truss structure through welding.
A thermoplastic composite truss manufacturing equipment is designed, including two main beam forming mechanisms, a diagonal brace forming mechanism and two hot melt docking modules, cross beams, longitudinal beams and diagonal braces are manufactured through heating molding modules and traction modules, and The hot melt docking module is used to make hot melt connections to form a stable truss structure.
The use of flexible fiber composite braids is achieved to obtain stable thermoplastic composite trusses through pultrusion molding. It has good structural stability and thermal control management, which reduces heat loss and reduces the floor area of the equipment.
Smart Images
Figure CN119116422A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of composite material molding, and in particular to a manufacturing device and method for a thermoplastic composite material truss. Background Art
[0002] Composite materials products are developed into profile products to replace traditional metal profiles due to their light weight, high strength and corrosion resistance.
[0003] At present, the common trusses on the market are usually made of metal materials through welding. The connection method of composite profiles is different from that of conventional metal profile products due to the particularity of materials, structures and molding processes. It is impossible to obtain a stable truss structure through welding like metal profiles. The reason is that there is a lack of equipment on the market that uses thermoplastic composite materials as raw materials to manufacture trusses. Summary of the invention
[0004] In view of the above problems, the purpose of the present invention is to provide a manufacturing device and method for a thermoplastic composite truss, so as to solve the problem that there is a lack of equipment on the market that uses thermoplastic composite materials as raw materials to manufacture trusses.
[0005] To achieve the above object, the present invention adopts the following technical solutions: In a first aspect, the present invention discloses a manufacturing device for a thermoplastic composite truss, which is used to manufacture a thermoplastic composite truss. The thermoplastic composite truss includes a crossbeam, two longitudinal beams and a plurality of diagonal braces. The two longitudinal beams are arranged in parallel at both ends of the crossbeam to form an outer frame. The plurality of diagonal braces are respectively arranged between the two longitudinal beams. The plurality of diagonal braces form a continuous whole in sequence from head to tail. The manufacturing device for the thermoplastic composite truss includes two main beam forming mechanisms, a diagonal brace forming mechanism and two hot-melt butt-jointing modules. Each main beam forming mechanism includes a main beam heating forming module. The main beam heating forming module The block is provided with a main beam material inlet hole, and the main beam material inlet holes and their longitudinal extension lines of the main beam heating and forming modules of the two main beam forming mechanisms are parallel to each other; the diagonal brace forming mechanism is transversely arranged between the two main beam forming mechanisms, including a transverse moving mechanism and a diagonal brace heating and forming module, and the transverse moving mechanism can drive the diagonal brace heating and forming module to move back and forth transversely and stop between the longitudinal extension lines of the two main beam material inlet holes through transverse movement, and the diagonal brace heating and forming module is provided with a diagonal brace material inlet hole; two hot melt butt joint modules are respectively arranged at the spatial intersection of the longitudinal extension lines of the two main beam material inlet holes and the transverse moving mechanism; wherein the two main beam forming mechanisms are used to manufacture the outer frame of the thermoplastic composite material truss, including a crossbeam and two longitudinal beams at both ends thereof; the diagonal brace forming mechanism is used to manufacture the diagonal brace of the thermoplastic composite material truss; when the diagonal brace heating and forming module moves to the longitudinal extension line behind the main beam material inlet hole and stops, the hot melt butt joint module is used to connect the two longitudinal beams and the diagonal brace at the junction through hot melt connection.
[0006] Furthermore, every two adjacent diagonal braces are connected by a straight line segment on the longitudinal beam, and a plurality of diagonal braces are sequentially connected end to end through a plurality of straight line segments to form a continuous whole; the junction between the longitudinal beam and the diagonal brace is the straight line segment.
[0007] Furthermore, the main beam material inlet hole is a square hole, and a first heating rod is respectively arranged in the main beam heating and forming module above and / or below each main beam material inlet hole; wherein, the main beam material inlet hole of the main beam heating and forming module is used to load the flexible fiber composite braid for manufacturing the outer frame, and the first heating rod is used to heat the flexible fiber composite braid loaded in the main beam material inlet hole, and after cooling and forming, a horizontal beam and two longitudinal beams of the outer frame of the thermoplastic composite truss are respectively obtained.
[0008] Furthermore, each main beam forming mechanism includes a main wire wheel, which is arranged near the inlet of the main beam material inlet hole of the corresponding main beam heating and forming module, and is located above the corresponding main beam heating and forming module; wherein the flexible fiber composite braided body used to manufacture the outer frame is pre-wound on the main wire wheel, passes through the main beam material inlet hole of the main beam heating and forming module and exposes the wire end.
[0009] Furthermore, each main beam forming mechanism also includes a group of traction modules, and the traction modules of the two main beam forming mechanisms are respectively arranged on the outside of the longitudinal extension line behind the main beam material inlet holes of the two main beam forming mechanisms, and the outer wall of each traction module is in contact with the outer wall of the crossbeam or longitudinal beam coming out of the corresponding main beam material inlet hole, so as to drive the crossbeam or longitudinal beam to be transported outward.
[0010] Furthermore, the diagonal brace material inlet hole is a square hole, and a second heating rod is respectively arranged in the diagonal brace heating and forming module above and / or below the diagonal brace material inlet hole; wherein, the diagonal brace material inlet hole of the diagonal brace heating and forming module is used to load the flexible fiber composite braid used to manufacture the diagonal brace, and the second heating rod is used to heat the flexible fiber composite braid loaded in the diagonal brace material inlet hole, and after cooling and forming, the diagonal brace of the thermoplastic composite truss is obtained.
[0011] Furthermore, the lateral movement mechanism includes a screw rod, which is perpendicular to the main beam material inlet hole and its longitudinal extension line; the diagonal brace heating and forming module is arranged on the screw rod, and when the screw rod rotates, it can drive the diagonal brace heating and forming module to move back and forth laterally between the two longitudinal extension lines of the main beam material inlet holes.
[0012] Furthermore, the lateral moving mechanism also includes a motor, the output shaft of the motor is fixedly connected to one end of the screw rod; an external thread is provided on the outer wall of the screw rod, a screw rod slider is provided on the sliding sleeve of the screw rod, an internal thread is provided in the screw rod slider, and the internal thread of the screw rod slider is connected to the external thread of the screw rod through a threaded connection; the screw rod slider is fixedly connected to the diagonal support heating molding module through a first connecting block.
[0013] Furthermore, the lateral movement mechanism also includes a gear set, which includes a main gear and a sub-gear, the main gear is arranged on the output shaft of the motor; the sub-gear is arranged on the end of the screw rod close to the output shaft of the motor; the main gear and the sub-gear are meshed with each other, thereby realizing a fixed connection between the output shaft of the motor and one end of the screw rod.
[0014] Furthermore, the diagonal brace forming mechanism is also equipped with a secondary line wheel device, which includes a secondary line wheel, a secondary line wheel slider and a slide rail, wherein the secondary line wheel is arranged on the slide rail through the secondary line wheel slider, and the secondary line wheel is located above the entrance of the diagonal brace material inlet hole of the diagonal brace heating and forming module; the secondary line wheel slider is fixedly connected to the diagonal brace heating and forming module through a second connecting block; when the screw rod rotates, the screw rod slider drives the diagonal brace heating and forming module to move, and while the diagonal brace heating and forming module moves laterally between the two longitudinal extension lines of the main beam material inlet holes, the diagonal brace heating and forming module drives the secondary line wheel slider to slide on the slide rail through the second connecting block, so that the secondary line wheel moves following the entrance of the diagonal brace material inlet hole of the diagonal brace heating and forming module; wherein the flexible fiber composite braid used to manufacture the diagonal brace is pre-wound on the secondary line wheel, passes through the diagonal brace material inlet hole of the diagonal brace heating and forming module and exposes the thread end.
[0015] Furthermore, each of the hot melt butt joint modules includes two rollers and a pair of heating rollers, and the two rollers are respectively arranged above and below the longitudinal extension lines of the two main beam material feeding holes and are parallel to each other; a heating roller is respectively arranged at both ends of each roller, and the upper and lower heating rollers of the roller on the same side are respectively arranged above and below the extension line behind the main beam material feeding hole, forming a pair of pressing heating rollers; the two pairs of heating rollers are respectively located at the junction of the screw rod and the extension line behind the two main beam material feeding holes; when the screw rod drives the diagonal brace heating forming module to move to the extension line behind the main beam material feeding hole, the hot melt butt joint module performs hot melt connection on the connection between the two longitudinal beams and the diagonal brace.
[0016] In a second aspect, the present invention also discloses a method for manufacturing a thermoplastic composite material truss, using the above-mentioned manufacturing equipment for the thermoplastic composite material truss, comprising: Step A: Make a beam, including the following steps: A main beam feed hole of a main beam heating and forming module of one of the two main beam forming mechanisms is selected, and a flexible fiber composite braided body used to manufacture an outer frame is passed through the main beam feed hole; during the loading of the flexible fiber composite braided body used to manufacture the outer frame into the main beam feed hole of the main beam heating and forming module, the first heating rod heats the flexible fiber composite braided body loaded in the main beam feed hole, and after cooling and forming, a crossbeam of the outer frame of the thermoplastic composite truss is obtained; Step B: manufacturing two longitudinal beams parallel to each other at the same time, and after the ends of the two longitudinal beams are exposed, fixing the two ends of the cross beam to the outer ends of the two longitudinal beams respectively, thereby obtaining the end portion of the outer frame; Step C: In the process of forming the subsequent outer frame, a plurality of diagonal braces are manufactured at the same time, and the diagonal braces are respectively arranged between the two longitudinal beams by driving the diagonal brace heating and forming module to move back and forth horizontally between the two longitudinal extension lines behind the main beam material inlet holes and stop on the longitudinal beam, and the straight line segments connecting adjacent diagonal braces are arranged on the longitudinal beam. The plurality of diagonal braces are sequentially formed into a continuous whole through multiple straight line segments, and finally the thermoplastic composite material truss is obtained.
[0017] Specifically, the step B comprises the following steps: Step B1: passing the flexible fiber composite braid for manufacturing the outer frame into the main beam material inlet holes of the main beam heating and forming modules respectively passing through the two main beam forming mechanisms; while the flexible fiber composite braid for manufacturing the outer frame is respectively loaded into the main beam material inlet holes of the two main beam heating and forming modules, the first heating rod heats the flexible fiber composite braid loaded in the main beam material inlet holes, and after cooling and forming, two longitudinal beams of the outer frame of the thermoplastic composite truss are obtained; Step B2: After the ends of the two longitudinal beams are exposed, the two ends of the cross beam are respectively fixed to the outer ends of the two longitudinal beams, thereby obtaining the end portion of the outer frame.
[0018] Specifically, the step C comprises the following steps: Step C1: introducing the flexible fiber composite braid of the thermoplastic composite material for manufacturing the diagonal brace into the diagonal brace inlet hole, and during the loading of the flexible fiber composite braid of the thermoplastic composite material for manufacturing the diagonal brace into the diagonal brace inlet hole of the diagonal brace heating and forming module, the second heating rod heats the flexible fiber composite braid of the thermoplastic composite material loaded in the diagonal brace inlet hole, and after cooling and forming, gradually forms the diagonal brace of the outer frame of the thermoplastic composite truss; Step C2: While the two longitudinal beams of the outer frame are being conveyed outward at the same time, the transverse moving mechanism drives the diagonal brace heating and forming module to move transversely back and forth between the longitudinal extension lines behind the two main beam inlet holes. and The diagonal brace stays on the longitudinal beam, wherein when the diagonal brace heating and forming module moves horizontally or back once between the longitudinal extension lines behind the two main beam material holes, a diagonal brace is produced between the two longitudinal beams respectively. At When staying on the longitudinal beam, the hot melt butt joint module performs hot melt connection on the connection between the two longitudinal beams and the diagonal braces to form the straight line segment. Every two adjacent diagonal braces are connected by a straight line segment on the longitudinal beam. Several diagonal braces are sequentially connected end to end through multiple straight lines to form a continuous whole, and finally the thermoplastic composite material truss is obtained.
[0019] Compared with the prior art, the present invention has the following beneficial effects: (I) The present invention discloses a manufacturing device for a thermoplastic composite truss, comprising two main beam forming mechanisms, a diagonal brace forming mechanism and two hot melt butt joint modules, each main beam forming mechanism comprising a main beam heating forming module, a main beam material inlet hole is arranged inside the main beam heating forming module, the main beam material inlet holes and their longitudinal extension lines of the main beam heating forming modules of the two main beam forming mechanisms are parallel to each other; the diagonal brace forming mechanism is transversely arranged between the two main beam forming mechanisms, comprising a transverse moving mechanism and a diagonal brace heating forming module, the transverse moving mechanism can drive the diagonal brace heating forming module to move transversely back and forth between the longitudinal extension lines of the two main beam material inlet holes through transverse movement, and the diagonal brace heating forming module is provided with a diagonal brace material inlet hole; the two hot melt butt joint modules are respectively arranged at the spatial intersection of the longitudinal extension lines of the two main beam material inlet holes and the transverse moving mechanism; Among them, the two main beam forming mechanisms are used to manufacture the outer frame of the thermoplastic composite truss, including a horizontal beam and two longitudinal beams at both ends thereof; the diagonal brace forming mechanism is used to manufacture the diagonal braces of the thermoplastic composite truss; when the diagonal brace heating forming module moves to the longitudinal extension line behind the main beam material inlet hole, the hot melt butt joint module is used to connect the two longitudinal beams and the diagonal braces together at the junction through hot melt connection.
[0020] (ii) The present invention discloses a method for manufacturing a thermoplastic composite truss, comprising: manufacturing a horizontal beam; manufacturing two longitudinal beams parallel to each other at the same time, and after the ends of the two longitudinal beams are exposed as the primary finished products, fixing the two ends of the horizontal beam to the outer ends of the two longitudinal beams respectively, thereby obtaining the end portion of the outer frame; in the process of forming the middle and tail parts of the outer frame, manufacturing a plurality of diagonal braces at the same time, and driving the diagonal brace heating and forming module to move back and forth horizontally between the longitudinal extension lines behind the two main beam material inlet holes, and arranging the plurality of diagonal braces between the two longitudinal beams at intervals, thereby finally obtaining a thermoplastic composite truss.
[0021] In addition, the present invention also has the following advantages: (a) The present invention discloses a manufacturing device for a thermoplastic composite material truss, which uses a flexible fiber flexible braided body as a raw material for producing a thermoplastic composite material truss, and obtains a stable profile structure after curing through a pultrusion molding process; (b) The present invention discloses a manufacturing device for a thermoplastic composite truss, in which heating components for producing the cross beams and longitudinal beams of the truss outer frame and hot-melt welding components for hot-melt connection of the diagonal brace and the outer frame are closely arranged along the manufacturing direction, thereby obtaining good truss structural stability, facilitating thermal control management, and reducing heat loss; (c) The present invention discloses a manufacturing device for a thermoplastic composite truss. An outer frame consisting of a crossbeam and two longitudinal beams at both ends thereof and a diagonal brace are manufactured separately in the same device, and then the diagonal brace is hot-melt connected to the outer frame, thereby reducing the occupied area. The truss can also be used in teaching demonstrations, space manufacturing and other fields. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 is a front view of the thermoplastic composite truss provided in Example 1 of the present invention; Figure 2 is a three-dimensional view of a thermoplastic composite truss provided in Example 1 of the present invention; Figure 3 is a three-dimensional view of a manufacturing device for a thermoplastic composite truss provided in Example 2 of the present invention; Figure 4 This is a three-dimensional view of the main components of the manufacturing equipment for the thermoplastic composite truss provided in Example 2 of the present invention, in which the outer frame that blocks the view is deleted. Figure 5 1 is a schematic diagram of the structure of the main components of the manufacturing equipment of the thermoplastic composite material truss provided in Example 2 of the present invention, wherein, in order to display these main components, the outer frame that blocks the line of sight is deliberately deleted, the same below; Figure 6 is a schematic structural diagram of two main beam forming mechanisms provided in Example 2 of the present invention; Figure 7 It is a top view of two main beam forming mechanisms provided in Example 2 of the present invention, each of which is equipped with two hot melt butt-jointing modules; Figure 8 It is a structural schematic diagram of a main beam forming mechanism and a diagonal brace forming mechanism provided in Example 2 of the present invention; Fig. 9 is a structural schematic diagram of the diagonal brace forming mechanism provided in Example 2 of the present invention; Fig.10 It is a left side view of the diagonal brace forming mechanism provided in Example 2 of the present invention; Fig.11 It is a vertical view of the diagonal brace forming mechanism provided in Example 2 of the present invention.
[0023] Description of reference numerals: 100 - outer frame, 101 - cross beam, 102 - longitudinal beam, 103 - diagonal brace; 1-main beam forming mechanism, 11-main line wheel, 12-main beam heating and forming module, 13-traction module; 20-lateral moving mechanism, 200-motor, 201-screw, 2010-screw slider; 202-gear shaft, 2021-main gear, 2022-secondary gear; 21-secondary line wheel device, 210-secondary line wheel, 211-secondary line wheel slider, 212-slide rail; 22-diagonal brace heating and forming module; 231-first connection block, 232-second connection block; 3- hot melt butt welding module, 30- roller, 31- heating roller, 32- electric ring; 40-frame, 41-partition. DETAILED DESCRIPTION
[0024] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.
[0025] In order to solve the problem that there is a lack of equipment on the market for manufacturing trusses using thermoplastic composite materials as raw materials, firstly, Example 1 of the present invention provides a thermoplastic composite truss, which uses a flexible fiber composite braid as the raw material of the thermoplastic composite material to manufacture the truss product to be obtained by the present invention, including a crossbeam 101, two longitudinal beams 102 and a plurality of diagonal braces 103, wherein the two longitudinal beams 102 are arranged parallel to each other at both ends of the crossbeam 101 to form an outer frame 100, and the plurality of diagonal braces 103 are respectively arranged between the two longitudinal beams 102, and each adjacent two diagonal braces 103 are connected on the longitudinal beam 102 by a straight line segment 104, and the plurality of diagonal braces 103 are sequentially formed into a continuous whole through multiple straight line segments 104. Secondly, Example 2 of the present invention discloses a manufacturing device for a thermoplastic composite truss, comprising two main beam forming mechanisms 1, a diagonal brace forming mechanism and two hot melt butt joint modules 3, the two main beam forming mechanisms 1 are used to manufacture the outer frame 100 of the thermoplastic composite truss, comprising a cross beam 101 and two longitudinal beams 102 at both ends thereof; the diagonal brace forming mechanism is used to manufacture the diagonal braces 103 of the thermoplastic composite truss; when the diagonal brace heating forming module moves to the longitudinal extension line behind the main beam material inlet hole, the hot melt butt joint module 3 is used to connect the two longitudinal beams 102 and the diagonal brace 103 together at the junction through hot melt connection. Finally, Example 3 of the present invention discloses a method for manufacturing a thermoplastic composite truss, comprising: manufacturing a crossbeam 101; manufacturing two parallel longitudinal beams 102 at the same time, and after the ends of the two longitudinal beams 102 are exposed as the initial finished products, fixing the two ends of the crossbeam 101 to the outer ends of the two longitudinal beams 102, thereby obtaining the end portion of the outer frame 100; in the process of forming the outer frame, manufacturing a plurality of diagonal braces 103 at the same time, and driving the diagonal brace heating forming module 22 to move back and forth laterally between the two longitudinal extension lines behind the main beam material hole and stay on the longitudinal beam, and respectively arranging the plurality of diagonal braces 103 between the two longitudinal beams 102, and arranging the straight line segments 104 connecting the adjacent diagonal braces 103 on the longitudinal beams 102, and the plurality of diagonal braces 103 are sequentially formed into a continuous whole through the plurality of straight line segments 104, and finally obtaining a thermoplastic composite truss.
[0026] Example 1: A thermoplastic composite truss Embodiment 1 of the present invention provides a thermoplastic composite truss, and its structure is described in detail below with reference to the accompanying drawings.
[0027] refer to Figure 1 and Figure 2 The thermoplastic composite truss includes a crossbeam 101, two longitudinal beams 102 and a plurality of diagonal braces 103. The two longitudinal beams 102 are arranged parallel to each other at both ends of the crossbeam 101 to form an outer frame 100. The plurality of diagonal braces 103 are respectively arranged between the two longitudinal beams 102. The plurality of diagonal braces 103 are connected end to end through a plurality of straight line segments 104 to form a continuous whole.
[0028] As a specific implementation method for connecting the diagonal brace 103 with the longitudinal beam 102, each two adjacent diagonal braces 103 are connected by a straight line segment 104 on the longitudinal beam 102, and a plurality of diagonal braces 103 are sequentially connected to form a continuous whole through a plurality of straight line segments 104. That is, the connection between the longitudinal beam 102 and the diagonal brace 103 is a straight line segment 104.
[0029] Among them, the thermoplastic composite truss is produced using a flexible fiber composite braid as raw material.
[0030] Specifically, the flexible fiber composite braided body is a belt-shaped or tubular composite material formed by weaving inorganic fibers and resin fibers.
[0031] Embodiment 2: A manufacturing device for thermoplastic composite truss Embodiment 2 of the present invention provides a manufacturing device for a thermoplastic composite material truss, which is used to manufacture the thermoplastic composite material truss of Embodiment 1. The structure and connection relationship thereof are described in detail below.
[0032] refer to Figures 3 to 7 The manufacturing equipment of the thermoplastic composite truss includes two main beam forming mechanisms 1, a diagonal brace forming mechanism and two hot melt butt-jointing modules 3. Each main beam forming mechanism 1 includes a main beam heating and forming module 12, wherein a main beam material inlet hole is provided inside the main beam heating and forming module 12, and the main beam material inlet holes and their longitudinal extension lines of the main beam heating and forming modules 12 of the two main beam forming mechanisms 1 are parallel to each other; The diagonal brace forming mechanism is transversely arranged between the two main beam forming mechanisms 1, and includes a transverse moving mechanism 20 and a diagonal brace heating and forming module 22. The transverse moving mechanism 20 can drive the diagonal brace heating and forming module 22 to move back and forth transversely and stay between the longitudinal extension lines of the two main beam material inlet holes through transverse movement. The diagonal brace heating and forming module 22 is provided with a diagonal brace material inlet hole. The two hot melt butt welding modules 3 are respectively arranged at the spatial intersection of the longitudinal extension lines of the two main beam material inlet holes and the horizontal moving mechanism 20; The two main beam forming mechanisms 1 are used to manufacture the outer frame 100 of the thermoplastic composite truss, including a cross beam 101 and two longitudinal beams 102 at both ends thereof; The diagonal brace forming mechanism is used to manufacture the diagonal brace 103 of the thermoplastic composite material truss; When the diagonal brace heating and forming module 22 moves to the longitudinal extension line behind the main beam material inlet hole and stops, the hot melt butt joint module 3 is used to connect the two longitudinal beams 102 and the diagonal brace 103 together at the junction thereof by hot melt connection. Specifically, the junction of the longitudinal beam 102 and the diagonal brace 103 is a straight line segment 104.
[0033] More specifically, the two main beam forming mechanisms 1 are arranged parallel to each other, and the diagonal brace forming mechanism is transversely arranged between the two main beam forming mechanisms 1 .
[0034] In order to ensure that the cross-sections of the produced cross beam 101 and the two longitudinal beams 102 are square, the main beam inlet hole is a square hole. In order to heat and form the outer frame 100 raw materials loaded in the main beam inlet hole, a first heating rod is respectively arranged in the main beam heating and forming module 12 above and / or below each main beam inlet hole.
[0035] Among them, the main beam material inlet hole of the main beam heating and forming module 12 is used to load the flexible fiber composite braided body for manufacturing the outer frame 100, and the first heating rod is used to heat the flexible fiber composite braided body loaded in the main beam material inlet hole. After cooling and forming, a cross beam 101 and two longitudinal beams 102 of the outer frame 100 of the thermoplastic composite truss are obtained respectively.
[0036] In order to facilitate the feeding of materials to the inlet of the main beam material hole, each main beam forming mechanism 1 includes a main wire wheel 11. The main wire wheel 11 of each main beam forming mechanism 1 is arranged close to the inlet of the main beam material hole of the corresponding main beam heating and forming module 12, and is located above the corresponding main beam heating and forming module 12; wherein, the flexible fiber composite braided body used to manufacture the outer frame 100 is pre-wound on the main wire wheel 11, passes through the main beam material hole of the main beam heating and forming module 12 and exposes the thread end.
[0037] In order to drive the crossbeam 101 or the longitudinal beam 102 to be transported outward, each main beam forming mechanism 1 also includes a group of traction modules 13. The traction modules 13 of the two main beam forming mechanisms 1 are respectively arranged on the outside of the longitudinal extension line behind the main beam material inlet holes of the two main beam forming mechanisms 1, and the outer wall of each traction module 13 is in contact with the outer wall of the crossbeam 101 or the longitudinal beam 102 coming out of the corresponding main beam material inlet hole.
[0038] Specifically, each group of traction modules 13 includes two sprockets and a transmission track. The two sprockets are connected by the transmission track. The crossbeam 101 or the longitudinal beam 102 coming out of the main beam material inlet hole fits with the outer wall of the transmission track of the corresponding traction module 13.
[0039] In order to increase the contact area between the traction module 13 and the cooled longitudinal beam 102 , a rubber block is provided on the outer wall of the driving track, and the driving track is fitted to the driving track of the traction module 13 via the rubber block.
[0040] In order to ensure that the cross section of the produced diagonal brace 103 is square, the diagonal brace inlet hole is a square hole. In order to heat and form the diagonal brace 103 raw material loaded in the diagonal brace inlet hole, a second heating rod is respectively provided in the diagonal brace heating and forming module 22 above and / or below the diagonal brace inlet hole.
[0041] Among them, the diagonal brace material inlet hole of the diagonal brace heating and molding module 22 is used to load the flexible fiber composite braid used to manufacture the diagonal brace 103, and the second heating rod is used to heat the flexible fiber composite braid loaded in the diagonal brace material inlet hole, and after cooling and molding, the diagonal brace 103 of the thermoplastic composite truss is obtained.
[0042] As a specific implementation method for realizing that the lateral moving mechanism 20 can drive the diagonal brace heating and forming module 22 to move back and forth laterally between the two longitudinal extension lines of the main beam material feeding holes through lateral movement, the lateral moving mechanism 20 includes a screw rod 201, and the screw rod 201 is perpendicular to the main beam material feeding hole and its longitudinal extension line; the diagonal brace heating and forming module 22 is arranged on the screw rod 201, and when the screw rod 201 rotates, it can drive the diagonal brace heating and forming module 22 to move back and forth laterally between the two longitudinal extension lines of the main beam material feeding holes.
[0043] Furthermore, the lateral movement mechanism 20 further includes a motor 200, and an output shaft of the motor 200 is fixedly connected to one end of the screw rod 201; The outer wall of the screw rod 201 is provided with an external thread, a screw rod slider 2010 is slidably sleeved on the screw rod 201, an internal thread is provided inside the screw rod slider 2010, and the internal thread of the screw rod slider 2010 is connected with the external thread of the screw rod 201 through a thread; The screw slider 2010 is fixedly connected to the diagonal support heating and forming module 22 via a first connecting block 231 .
[0044] Furthermore, the lateral movement mechanism 20 further includes a gear set 202, and the gear set 202 includes a main gear 2021 and a secondary gear 2022. The main gear 2021 is arranged on the output shaft of the motor 200; The auxiliary gear 2022 is arranged on the end of the screw rod 201 close to the output shaft of the motor 200; The main gear 2021 and the sub-gear 2022 mesh with each other, thereby achieving a fixed connection between the output shaft of the motor 200 and one end of the screw rod 201 .
[0045] In order to make the flexible fiber composite braided body used to manufacture the diagonal brace 103 move along with the inlet of the diagonal brace material inlet hole of the diagonal brace heating and forming module 22, the diagonal brace forming mechanism is also provided with a secondary line wheel device 21, the secondary line wheel device 21 comprises a secondary line wheel 210, a secondary line wheel slider 211 and a slide rail 212, the secondary line wheel 210 is arranged on the slide rail 212 through the secondary line wheel slider 211, and the secondary line wheel 210 is located above the inlet of the diagonal brace material inlet hole of the diagonal brace heating and forming module 22; the secondary line wheel slider 211 is fixedly connected to the diagonal brace heating and forming module 22 through a second connecting block 232; When the screw rod 201 rotates, the screw rod slider 2010 drives the diagonal brace heating and forming module 22 to move. While the diagonal brace heating and forming module 22 moves laterally between the two longitudinal extension lines of the main beam material inlet holes, the diagonal brace heating and forming module 22 drives the secondary line wheel slider 211 to slide on the slide rail 212 through the second connecting block 232, so that the secondary line wheel 210 moves following the movement of the entrance of the diagonal brace material inlet hole of the diagonal brace heating and forming module 22.
[0046] The flexible fiber composite braid used to manufacture the diagonal brace 103 is pre-wound on the secondary wire wheel 21, passes through the diagonal brace material inlet hole of the diagonal brace heating and forming module 22, and exposes the thread ends.
[0047] As a specific implementation method for realizing that the hot melt butt joint module 3 connects the joints of the two longitudinal beams 102 and the diagonal braces 103 through hot melt connection, each of the hot melt butt joint modules 3 includes two rollers 30 and a pair of heating rollers 31, and the two rollers 30 are respectively arranged above and below the longitudinal extension lines of the two main beam material inlet holes and are parallel to each other; a heating roller 31 is respectively arranged at both ends of each roller 30, and the upper and lower heating rollers 31 of the roller 30 on the same side are respectively arranged above and below the extension line behind the main beam material inlet hole, forming a pair of pressing heating rollers 31; the two pairs of heating rollers 31 are respectively located at the joints of the screw rod 201 and the extension lines behind the two main beam material inlet holes.
[0048] A third heating rod is disposed inside the heating roller 31 , and each heating roller 31 is provided with an electric ring 32 , and an electric wire is passed through the electric ring 32 , and the electric wire is connected to the third heating rod to supply power to the third heating rod.
[0049] When the screw rod 201 drives the diagonal brace heating and forming module 22 to move to the extension line behind the main beam material inlet hole, the hot melt butt joint module 3 performs hot melt connection on the connection between the two longitudinal beams 102 and the diagonal brace 103 .
[0050] Among them, hot melt connection is also called hot melt welding connection. Its principle is to use the characteristics of high temperature melting pipe materials to make two thermoplastic materials firmly connected. It includes the following specific steps: first, the surfaces of the two thermoplastic materials are heated and melted, and then they are bonded by applying pressure. Finally, the mating surfaces of the two thermoplastic materials are pressed against a heating tool to heat their flat end faces until they are melted. After removing the heating tool, the two molten end faces are pressed together to form a firm connection.
[0051] In order to integrate the above-mentioned structural parts together, a specific implementation method is that the manufacturing equipment of the thermoplastic composite truss also includes a frame 40, which is a rectangular frame, composed of a plurality of cross bars and a plurality of vertical bars. A partition 41 is arranged in the frame 40, and the main beam heating and forming modules 12 and the traction modules 13 of the two main beam forming mechanisms 1 are arranged on the partition 41 in sequence from front to back. The motor 200 is fixed on the vertical bars of the frame 40. In view of the fact that this structure is a common structure, how to place these components on the frame 40 is a conventional technical means for those skilled in the art, and will not be repeated here.
[0052] Embodiment 3: A method for manufacturing a thermoplastic composite truss Embodiment 3 of the present invention provides a method for manufacturing a thermoplastic composite material truss, using the manufacturing equipment for the thermoplastic composite material truss provided in Embodiment 2 to manufacture the thermoplastic composite material truss of Embodiment 1, the method comprising the following steps: Step A: Manufacturing a beam 101, including the following steps: A main beam material inlet hole of the main beam heating and forming module 12 of one of the two main beam forming mechanisms 1 is selected, and a flexible fiber composite braid for manufacturing the outer frame 100 is passed into the main beam material inlet hole; while the flexible fiber composite braid of the thermoplastic composite material for manufacturing the outer frame 100 is loaded into the main beam material inlet hole of the main beam heating and forming module 12, the first heating rod heats the flexible fiber composite braid of the thermoplastic composite material loaded in the main beam material inlet hole, and after cooling and forming, a crossbeam 101 of the outer frame 100 of the thermoplastic composite truss is obtained; Step B: Two longitudinal beams 102 are manufactured in parallel with each other at the same time. After the ends of the two longitudinal beams 102 are exposed, the two ends of the cross beam 101 are respectively fixed to the outer ends of the two longitudinal beams 102, thereby obtaining the end portion of the outer frame 100, including the following steps: Step B1: passing the flexible fiber composite braid of the thermoplastic composite material for manufacturing the outer frame 100 into the main beam material inlet holes of the main beam heating and forming modules 12 respectively passing through the two main beam forming mechanisms 1; while the flexible fiber composite braid of the thermoplastic composite material for manufacturing the outer frame 100 is respectively loaded into the main beam material inlet holes of the two main beam heating and forming modules 12, the first heating rod heats the flexible fiber composite braid of the thermoplastic composite material loaded in the main beam material inlet holes, and after cooling and forming, two longitudinal beams 102 of the outer frame 100 of the thermoplastic composite truss are obtained; Step B2: After the ends of the two longitudinal beams 102 are exposed, the two ends of the cross beam 101 are respectively fixed to the outer ends of the two longitudinal beams 102, thereby obtaining the end portion of the outer frame 100; Step C: During the process of forming the subsequent outer frame 100, a plurality of diagonal braces 103 are simultaneously manufactured, and the diagonal brace heating and forming module 22 is driven to move back and forth transversely between the two longitudinal extension lines behind the main beam material inlet holes and stop on the longitudinal beam 102, and the plurality of diagonal braces 103 are respectively arranged between the two longitudinal beams 102, and the straight line segments 104 connecting the adjacent diagonal braces 103 are arranged on the longitudinal beam 102, and the plurality of diagonal braces 103 are sequentially formed into a continuous whole through the plurality of straight line segments 104, and finally the thermoplastic composite material truss is obtained, including the following steps: Step C1: introducing the flexible fiber composite braid of the thermoplastic composite material for manufacturing the diagonal brace 103 into the diagonal brace inlet hole, and during the loading of the flexible fiber composite braid of the thermoplastic composite material for manufacturing the diagonal brace 103 into the diagonal brace inlet hole of the diagonal brace heating and forming module 22, the second heating rod heats the flexible fiber composite braid of the thermoplastic composite material loaded in the diagonal brace inlet hole, and after cooling and forming, gradually forms the diagonal brace 103 of the outer frame 100 of the thermoplastic composite truss; Step C2: While the two longitudinal beams 102 of the outer frame 100 are being conveyed outward at the same time, the transverse moving mechanism 20 drives the diagonal brace heating and forming module 22 to move back and forth transversely between the two longitudinal extension lines behind the main beam material holes and stay on the longitudinal beams 102, wherein when the diagonal brace heating and forming module 22 moves back and forth transversely between the two longitudinal extension lines behind the main beam material holes once, a diagonal brace 103 is produced between the two longitudinal beams 102 respectively, and when the diagonal brace heating and forming module 22 AtWhen staying on the longitudinal beam 102, the hot melt butt joint module 3 performs hot melt connection on the connection between the two longitudinal beams 102 and the diagonal braces 103 to form the straight line segment 104. Every two adjacent diagonal braces 103 are connected on the longitudinal beam 102 through a straight line segment 104. Several diagonal braces 103 are sequentially formed into a continuous whole through multiple straight line segments 104, and finally the thermoplastic composite material truss is obtained.
[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A manufacturing device for a thermoplastic composite material truss, used for manufacturing a thermoplastic composite material truss, the thermoplastic composite material truss comprising a cross beam (101), two longitudinal beams (102) and a plurality of diagonal braces (103), the two longitudinal beams (102) being arranged parallel to each other at both ends of the cross beam (101) to form an outer frame (100), the plurality of diagonal braces (103) being arranged respectively between the two longitudinal beams (102), and the plurality of diagonal braces (103) being arranged end to end to form a continuous whole, characterized in that: It comprises two main beam forming mechanisms (1), a diagonal brace forming mechanism and two hot-melt butt-jointing modules (3). Each main beam forming mechanism (1) comprises a main beam heating and forming module (12), wherein a main beam material inlet hole is arranged inside the main beam heating and forming module (12), and the main beam material inlet holes of the main beam heating and forming modules (12) of the two main beam forming mechanisms (1) and their longitudinal extension lines are parallel to each other; The diagonal brace forming mechanism is transversely arranged between the two main beam forming mechanisms (1), and comprises a transverse moving mechanism (20) and a diagonal brace heating and forming module (22); the transverse moving mechanism (20) can drive the diagonal brace heating and forming module (22) to move back and forth transversely and stay between the longitudinal extension lines of the two main beam material inlet holes through transverse movement; the diagonal brace heating and forming module (22) is provided with a diagonal brace material inlet hole inside; Two hot melt butt-jointing modules (3) are respectively arranged at the spatial intersection of the longitudinal extension lines of the two main beam material inlet holes and the transverse moving mechanism (20); The two main beam forming mechanisms (1) are used to manufacture the outer frame (100) of the thermoplastic composite material truss, comprising a cross beam (101) and two longitudinal beams (102) at both ends thereof; The diagonal brace forming mechanism is used to manufacture the diagonal brace (103) of the thermoplastic composite material truss; When the diagonal brace heating and forming module (22) moves to a stop on the longitudinal extension line behind the main beam material inlet hole, the hot melt butt joint module (3) is used to connect the joints of the two longitudinal beams (102) and the diagonal brace (103) together through hot melt connection.
2. The manufacturing equipment of thermoplastic composite truss according to claim 1, characterized in that: Each adjacent two diagonal braces (103) are connected on the longitudinal beam (102) via a straight line segment (104), and a plurality of diagonal braces (103) are sequentially connected end to end via a plurality of straight line segments (104) to form a continuous whole; The junction between the longitudinal beam (102) and the diagonal brace (103) is the straight line segment (104).
3. The manufacturing equipment of thermoplastic composite truss according to claim 1, characterized in that: The main beam material inlet hole is a square hole, and a first heating rod is respectively arranged in the main beam heating and forming module (12) above and / or below each main beam material inlet hole; The main beam material inlet hole of the main beam heating and forming module (12) is used for loading a flexible fiber composite braided body for manufacturing an outer frame (100), and the first heating rod is used for heating the flexible fiber composite braided body loaded in the main beam material inlet hole, and after cooling and forming, a cross beam (101) and two longitudinal beams (102) of the outer frame (100) of the thermoplastic composite truss are obtained respectively.
4. The manufacturing equipment of thermoplastic composite material truss according to claim 3, characterized in that: Each main beam forming mechanism (1) comprises a main line wheel (11), and the main line wheel (11) of each main beam forming mechanism (1) is arranged close to the inlet of the main beam material inlet hole of the corresponding main beam heating and forming module (12), and is located above the corresponding main beam heating and forming module (12); The flexible fiber composite braided body used to manufacture the outer frame (100) is pre-wound on the main wire wheel (11), passes through the main beam material inlet hole of the main beam heating and forming module (12) and exposes the wire ends.
5. The manufacturing equipment of thermoplastic composite material truss according to claim 3, characterized in that: Each main beam forming mechanism (1) further comprises a group of traction modules (13), wherein the traction modules (13) of the two main beam forming mechanisms (1) are respectively arranged outside the longitudinal extension lines behind the main beam material inlet holes of the two main beam forming mechanisms (1), and the outer wall of each traction module (13) is in contact with the outer wall of the cross beam (101) or the longitudinal beam (102) coming out of the corresponding main beam material inlet hole, so as to drive the cross beam (101) or the longitudinal beam (102) to be transported outward.
6. The manufacturing equipment of thermoplastic composite truss according to claim 1, characterized in that: The diagonal support material inlet hole is a square hole, and a second heating rod is respectively arranged in the diagonal support heating and forming module (22) above and / or below the diagonal support material inlet hole; The diagonal brace material inlet hole of the diagonal brace heating and forming module (22) is used to load a flexible fiber composite braid for manufacturing the diagonal brace (103), and the second heating rod is used to heat the flexible fiber composite braid loaded in the diagonal brace material inlet hole, and after cooling and forming, the diagonal brace (103) of the thermoplastic composite truss is obtained.
7. The manufacturing equipment of thermoplastic composite truss according to claim 1, characterized in that: The lateral movement mechanism (20) comprises a screw rod (201), wherein the screw rod (201) is perpendicular to the main beam material inlet hole and its longitudinal extension line; The diagonal brace heating and forming module (22) is arranged on the screw rod (201), and when the screw rod (201) rotates, it can drive the diagonal brace heating and forming module (22) to move back and forth horizontally between two longitudinal extension lines of the main beam material inlet holes.
8. The manufacturing equipment of thermoplastic composite material truss according to claim 7, characterized in that: The lateral movement mechanism (20) further comprises a motor (200), wherein an output shaft of the motor (200) is fixedly connected to one end of the screw rod (201); An external thread is provided on the outer wall of the screw rod (201), a screw rod slider (210) is provided on the sliding sleeve of the screw rod (201), an internal thread is provided in the screw rod slider (210), and the internal thread of the screw rod slider (210) is connected to the external thread of the screw rod (201) through a threaded connection; The screw slider (2010) is fixedly connected to the diagonal support heating and forming module (22) via a first connecting block (231).
9. The manufacturing equipment of thermoplastic composite truss according to claim 8, characterized in that: The lateral movement mechanism (20) further comprises a gear set (202), wherein the gear set (202) comprises a main gear (2021) and a secondary gear (2022). The main gear (2021) is arranged on the output shaft of the motor (200); The secondary gear (2022) is arranged on the end of the screw rod (201) close to the output shaft of the motor (200); The main gear (2021) and the secondary gear (2022) mesh with each other, thereby achieving a fixed connection between the output shaft of the motor (200) and one end of the lead screw (201).
10. The manufacturing equipment of thermoplastic composite truss according to claim 7, characterized in that: The diagonal brace forming mechanism is further provided with a secondary wire wheel device (21), the secondary wire wheel device (21) comprising a secondary wire wheel (210), a secondary wire wheel slider (211) and a slide rail (212), the secondary wire wheel (210) being arranged on the slide rail (212) via the secondary wire wheel slider (211), and the secondary wire wheel (210) being located above the inlet of the diagonal brace material inlet hole of the diagonal brace heating and forming module (22); The secondary line wheel slider (211) is fixedly connected to the diagonal support heating and forming module (22) via a second connecting block (232); When the screw rod (201) rotates, the screw rod slider (210) drives the diagonal brace heating and forming module (22) to move, and while the diagonal brace heating and forming module (22) moves transversely between the longitudinal extension lines of the two main beam material inlet holes, the diagonal brace heating and forming module (22) drives the secondary line wheel slider (211) to slide on the slide rail (212) through the second connecting block (232), so that the secondary line wheel (210) moves following the movement of the inlet of the diagonal brace material inlet hole of the diagonal brace heating and forming module (22); The flexible fiber composite braid used to manufacture the diagonal brace (103) is pre-wound on the secondary wire wheel (21), passes through the diagonal brace material inlet hole of the diagonal brace heating and forming module (22) and exposes the thread ends.
11. The manufacturing equipment of thermoplastic composite truss according to claim 1, characterized in that: Each of the hot melt butt-jointing modules (3) comprises two rollers (30) and a pair of heating rollers (31); the two rollers (30) are respectively arranged above and below the longitudinal extension lines of the two main beam material inlet holes and are parallel to each other; a heating roller (31) is respectively arranged at both ends of each roller (30); the upper and lower heating rollers (31) of the roller (30) on the same side are respectively arranged above and below the extension line behind the main beam material inlet hole, forming a pair of pressing heating rollers (31); the two pairs of heating rollers (31) are respectively located at the junction of the screw rod (201) and the extension line behind the two main beam material inlet holes; When the screw rod (201) drives the diagonal brace heating and forming module (22) to move to the extension line behind the main beam material inlet hole, the hot melt butt joint module (3) performs hot melt connection on the connection points between the two longitudinal beams (102) and the diagonal brace (103).
12. A method for manufacturing a thermoplastic composite material truss, using the manufacturing equipment for a thermoplastic composite material truss according to any one of claims 1 to 11, characterized in that: include Step A: Manufacturing a beam (101), including the following steps: A main beam feed hole of a main beam heating and forming module (12) of one of the two main beam forming mechanisms (1) is selected, and a flexible fiber composite braided body used to manufacture an outer frame (100) is passed through the main beam feed hole; while the flexible fiber composite braided body used to manufacture an outer frame (100) is loaded into the main beam feed hole of the main beam heating and forming module (12), the first heating rod heats the flexible fiber composite braided body loaded in the main beam feed hole, and after cooling and forming, a crossbeam (101) of the outer frame (100) of the thermoplastic composite truss is obtained; Step B: simultaneously manufacturing two longitudinal beams (102) parallel to each other, and after the ends of the two longitudinal beams (102) are exposed as the primary finished products, fixing the two ends of the cross beam (101) to the outer ends of the two longitudinal beams (102) respectively, thereby obtaining the end portion of the outer frame (100); Step C: During the process of forming the subsequent outer frame (100), a plurality of diagonal braces (103) are simultaneously manufactured, and the diagonal brace heating and forming module (22) is driven to move back and forth transversely between two longitudinal extension lines behind the main beam material inlet holes and to stop on the longitudinal beam (102), and the plurality of diagonal braces (103) are respectively arranged between the two longitudinal beams (102), and the plurality of diagonal braces (103) are sequentially formed into a continuous whole from head to tail, and finally the thermoplastic composite material truss is obtained.
13. The method for manufacturing a thermoplastic composite truss according to claim 12, characterized in that: The step B comprises the following steps: Step B1: passing the flexible fiber composite braided body for manufacturing the outer frame (100) into the main beam material inlet holes of the main beam heating and forming modules (12) respectively passing through two main beam forming mechanisms (1); while the flexible fiber composite braided body for manufacturing the outer frame (100) is respectively loaded into the main beam material inlet holes of the two main beam heating and forming modules (12), the first heating rod heats the flexible fiber composite braided body loaded in the main beam material inlet holes, and after cooling and forming, two longitudinal beams (102) of the outer frame (100) of the thermoplastic composite truss are obtained; Step B2: After the ends of the two longitudinal beams (102) are exposed, the two ends of the cross beam (101) are respectively fixed to the outer ends of the two longitudinal beams (102), thereby obtaining the end portion of the outer frame (100).
14. The method for manufacturing a thermoplastic composite truss according to claim 13, characterized in that: The step C comprises the following steps: Step C1: introducing the flexible fiber composite braid of the thermoplastic composite material for manufacturing the diagonal brace (103) into the diagonal brace inlet hole, and while the flexible fiber composite braid of the thermoplastic composite material for manufacturing the diagonal brace (103) is loaded into the diagonal brace inlet hole of the diagonal brace heating and forming module (22), the second heating rod heats the flexible fiber composite braid of the thermoplastic composite material loaded in the diagonal brace inlet hole, and after cooling and forming, gradually forms the diagonal brace (103) of the outer frame (100) of the thermoplastic composite truss; Step C2: While the two longitudinal beams (102) of the outer frame (100) are being simultaneously conveyed outward, the transverse moving mechanism (20) drives the diagonal brace heating and forming module (22) to move transversely back and forth between the two longitudinal extension lines behind the main beam material inlet holes and to stop on the longitudinal beams (102), wherein when the diagonal brace heating and forming module (22) moves transversely back and forth once between the two longitudinal extension lines behind the main beam material inlet holes, a diagonal brace (103) is produced between the two longitudinal beams (102), and when the diagonal brace heating and forming module (22) At When the longitudinal beam (102) stays on the longitudinal beam (102), the hot-melt butt-jointing module (3) performs hot-melt connection on the connection points between the two longitudinal beams (102) and the diagonal braces (103) to form the straight line segment (104), and each two adjacent diagonal braces (103) are connected on the longitudinal beam (102) via a straight line segment (104), and a plurality of diagonal braces (103) are sequentially connected end to end via a plurality of straight line segments (104) to form a continuous whole, and finally the thermoplastic composite material truss is obtained.