A large-scale spliced ​​arc-shaped mold for preparing carbon fiber tubes with arc-shaped surfaces and a preparation method thereof

Abstract

The present invention relates to a large-scale spliced ​​arc mold for preparing carbon fiber tubes with arc-shaped surfaces and a preparation method thereof; the mold comprises ribs and ribs, and some ribs are provided with connecting holes; slots are provided at the left and right ends of each rib, and each rib is tightly fitted and plugged with the corresponding rib through the slot; the upper end surface of each rib is an arc surface, and a groove is provided on the upper end surface of the rib, and the groove separates the upper end surface of the rib into a first arc surface segment and a second arc surface segment; the mold also comprises a plurality of long groove plates, and a plurality of first side plates and a plurality of second side plates are respectively provided on the left and right sides of the rib, and each first side plate and each second side plate are respectively connected to the corresponding ribs through a detachable connecting piece, and each first side plate is bent with a first arc panel at one end, and each second side plate is bent with a second arc panel at one end; the structural design of the large-scale spliced ​​arc mold for preparing carbon fiber tubes with arc-shaped surfaces can be customized in unit modules, is convenient for transportation, convenient for preparation, has high precision, and has high precision of arc surface.

Description

Technical Field

[0001] The present invention relates to the technical field of large-scale mold preparation, and in particular to a large-scale spliced ​​arc-shaped mold for preparing a carbon fiber tube with an arc-shaped surface and a preparation method thereof. Background Art

[0002] Traditional large curved molds are manufactured using integral casting or computer-controlled precision machining (CNC machining), which can lead to high equipment investment, long production cycles, and transportation difficulties. Current spliced ​​molds are often welded from flat steel plates and then machined and reshaped as a whole, but this still presents drawbacks such as high processing costs and difficulty ensuring curved surface accuracy.

[0003] Therefore, in order to solve the above problems, the present invention urgently needs to provide a large-scale spliced ​​arc-shaped mold for preparing carbon fiber tubes with arc-shaped surfaces and a preparation method thereof. Summary of the Invention

[0004] The present invention aims to provide a large-scale arc-shaped mold for producing carbon fiber tubes with curved surfaces and a method for producing the same. This method addresses the existing problems of conventional large-scale arc-shaped molds, which typically use integral casting or computer-controlled precision machining (CNC machining), resulting in high equipment investment, long production cycles, and transportation difficulties. Current arc-shaped molds are often produced by welding flat steel plates and then machining them into a single piece, which still presents technical challenges such as high processing costs and difficulty ensuring the accuracy of the curved surface.

[0005] The present invention provides a large-scale arc-shaped splicing mold for preparing carbon fiber tubes with arc-shaped surfaces, comprising a plurality of ribs and a plurality of ribs, some of which are provided with connection holes; slots are provided on the left and right ends of each rib, and the plurality of ribs are arranged at intervals and assembled with the plurality of ribs through the slots to form a frame;

[0006] The upper end surface of each rib is an arc-shaped surface, and a groove is provided on the upper end surface of the rib. The opposite side walls of the groove are connected with the front end surface and the rear end surface of the corresponding rib. The groove divides the upper end surface of the rib into a first arc surface segment and a second arc surface segment.

[0007] It also includes a plurality of long groove plates, each of which includes a long plate matching the bottom of the groove, and a vertical plate close to the inner wall of the groove at the left and right ends of the long plate;

[0008] It also includes multiple first side panels and multiple second side panels respectively arranged on the left and right sides of the rib plate, each first side panel and each second side panel are respectively connected to the corresponding rib through a detachable connecting piece, one end of each first side panel is bent to have a first arc panel tightly attached to the first arc surface segment, and one end of each second side panel is bent to have a second arc panel tightly attached to the second arc surface segment.

[0009] Preferably, it also includes at least two reinforcing strips located in each long slot plate, which are detachably connected to the long slot plate, and each reinforcing strip is arranged in a straight line along the length direction of the long slot plate, with adjacent two reinforcing strips abutting each other end to end, and the abutting points of two adjacent reinforcing strips are staggered with adjacent ribs.

[0010] Preferably, the joint of two adjacent long groove plates corresponds to two spliced ​​rib plates, and the two rib plates are connected together through connecting holes and countersunk bolts.

[0011] Preferably, after assembly, a reinforcing insert is arranged in the long slot plate close to the end side along the width direction thereof, and the reinforcing insert is detachably connected to the long slot plate.

[0012] Preferably, each first curved panel is provided with a transverse reinforcement strip arranged along its length, and the transverse reinforcement strip is fixedly connected to the first curved panel;

[0013] After assembly, longitudinal reinforcement strips are arranged on the first curved panel located on the outer end side along the width direction.

[0014] Preferably, each rib is provided with a plurality of weight-reducing holes.

[0015] Preferably, the length of each first side panel is 500-800 mm; the length of each second side panel is 500-800 mm;

[0016] The surfaces of the first side plate, the second side plate and the long groove plate are provided with Teflon coating;

[0017] The ribs are made of square steel;

[0018] The ribs are made of steel plates;

[0019] The thickness of the rib is ≥2mm.

[0020] The present invention also provides a method for preparing a large-scale spliced ​​arc-shaped mold for preparing a carbon fiber tube with an arc-shaped surface based on any one of the above methods, comprising the following steps:

[0021] A plurality of ribs are prepared by using steel plates, a plurality of ribs are prepared by using square steel, and the plurality of ribs are connected end to end and connected into one body by welding;

[0022] A first side plate and a first curved panel are made of steel plates, and a second side plate and a second curved panel are made of steel plates. The first side plate and the first curved panel are formed as a whole by cold bending with a plate rolling machine, and the second side plate and the second curved panel are formed as a whole by cold bending with a plate rolling machine.

[0023] Long trough plates are prepared using steel plates;

[0024] Assemble multiple ribs and ribs into a frame.

[0025] Assemble the long groove plate and the multiple ribs through the grooves of each rib;

[0026] Each first side plate is connected to the corresponding rib by bolts, and each second side plate is connected to the corresponding rib by bolts.

[0027] The first curved panel and the second curved panel are welded to the corresponding ribs to obtain a large-scale spliced ​​curved mold for preparing a carbon fiber tube with a curved surface.

[0028] Preferably, reinforcing strips are installed in the long slot plates, and each reinforcing strip is detachably connected to the long slot plates by bolts.

[0029] Preferably, the transverse reinforcement strip is welded to the first arc panel; a reinforcement insert is installed in the groove of the long slot plate at the outer end, and the reinforcement insert is detachably connected to the long slot plate; and a longitudinal reinforcement strip is welded in the first arc panel at the outer end along its width direction.

[0030] The large-scale arc-shaped splicing mold for preparing carbon fiber tubes with arc-shaped surfaces and the preparation method thereof provided by the present invention have the following improvements compared with the prior art:

[0031] 1. The large-scale spliced ​​arc mold for preparing a carbon fiber tube with an arc surface provided by the present invention includes a plurality of ribs and ribs. Through the plurality of ribs, the plurality of ribs, and the design of the plug-in grooves on each rib, the ribs can be spliced ​​according to the required length and assembled into a frame. The plurality of first side panels and the plurality of second side panels can be detachably connected to the corresponding ribs by bolts. The first arc panel and the second arc panel can be welded and fixed with the corresponding first arc surface segment and the second arc surface segment. The first arc surface segment and the second arc surface segment support the first arc panel and the second arc panel, and the groove can support the long groove plate. The above structural design is small in size and convenient for transportation. It can be transported to the place of use and then assembled. The above structures can be customized according to the required units, which is convenient for processing, reduces equipment requirements, and reduces energy consumption.

[0032] 2. The large-scale arc-shaped mold for producing curved carbon fiber tubes provided by the present invention also includes at least two reinforcing strips located within each elongated plate. The reinforcing strips are detachably connected to the elongated plate and arranged in a straight line along the length of the elongated plate. Adjacent reinforcing strips abut end to end, and the abutment points of two adjacent reinforcing strips are offset from adjacent ribs. The reinforcing strips reinforce the elongated plate to prevent deformation. The abutment points of two adjacent reinforcing strips are offset from the corresponding ribs to prevent bending at the connection.

[0033] 3. The large-scale spliced ​​arc-shaped mold provided by the present invention for preparing carbon fiber tubes with arc-shaped surfaces has reinforcing inserts arranged along the width direction of the long slot plate close to the end side. The reinforcing inserts are detachably connected to the long slot plate to achieve reinforcement of the width direction of the long slot plate on the end side.

[0034] 4. The large-scale arc-shaped mold for preparing carbon fiber tubes with curved surfaces provided by the present invention, after assembly, comprises four long slotted plates, each of which has two removable reinforcing strips. The two reinforcing strips in the long slotted plates at both ends are shorter than the length of the long slotted plates, leaving space for the installation of reinforcing inserts. The reinforcing inserts are removably connected to the long slotted plates by bolts, thereby reinforcing the long slotted plates in the width direction and preventing deformation during use or demolding. The two reinforcing strips in each long slotted plate in the middle are equal in length to ensure reinforcement of the long slotted plates in the length direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0036] Figure 1 This is a schematic structural diagram of a large-scale spliced ​​arc-shaped mold for preparing a carbon fiber tube with an arc-shaped surface according to the present invention (a top perspective view);

[0037] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0038] Figure 3 This is a schematic structural diagram of a large-scale spliced ​​arc-shaped mold for preparing a carbon fiber tube with an arc-shaped surface according to the present invention (bottom-view stereogram);

[0039] Figure 4 A schematic structural diagram (stereoscopic diagram) of the rib plate of the present invention;

[0040] Figure 5 This is a schematic structural diagram of a large-scale spliced ​​arc-shaped mold for preparing a carbon fiber tube with an arc-shaped surface according to the present invention (a partial top view, with portions of the first side panel, the second side panel, the first arc-shaped panel, the second arc-shaped panel, and the reinforcing fillet removed).

[0041] Description of reference numerals:

[0042] 1. Rib; 2. Rib; 101. First arc segment; 102. Second arc segment; 103. Slot; 104. Groove; 105. Weight-reducing hole; 106. Connection hole; 3. Long trough plate; 31. Long plate; 32. Vertical plate; 4. First side plate; 5. Second side plate; 6. First arc panel; 7. Second arc panel; 8. Reinforcement insert; 9. Reinforcement insert; 10. Horizontal reinforcement strip; 11. Longitudinal reinforcement strip. DETAILED DESCRIPTION

[0043] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0044] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0045] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0046] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5As shown, this embodiment is a large-scale spliced ​​arc mold for preparing a carbon fiber tube with an arc surface, comprising a plurality of ribs 1 and a plurality of ribs 2, some of the ribs 1 being provided with connecting holes 106; slots 103 are provided at the left and right ends of each rib 1, and the plurality of ribs 1 are arranged at intervals and assembled into a frame with the plurality of ribs 2 through the slots 103; the upper end surface of each rib 1 is an arc surface, and a groove 104 is provided on the upper end surface of the rib 1, and the opposite side walls of the groove 104 are connected with the front end surface and the rear end surface of the corresponding rib 1, and the groove 104 divides the upper end surface of the rib 1 into a first arc surface segment 101 and a second arc surface segment 102; it also includes a plurality of long slot plates 3, each The long trough plate 3 includes a long plate 31 that matches the bottom of the groove 104, and the left and right ends of the long plate 31 are respectively provided with vertical plates 32 that are tightly attached to the inner wall of the groove 104; it also includes a plurality of first side panels 4 and a plurality of second side panels 5 that are respectively arranged on the left and right sides of the rib plate 1, and each first side panel 4 and each second side panel 5 are respectively connected to the corresponding rib 2 through a detachable connecting piece, and one end of each first side panel 4 is bent to have a first curved panel 6 that is tightly attached to the first curved surface segment 101, and one end of each second side panel 5 is bent to have a second curved panel 7 that is tightly attached to the second curved surface segment 102.

[0047] The large-scale spliced ​​arc mold for preparing carbon fiber tubes with arc-shaped surfaces provided by the present invention includes multiple ribs 1 and ribs 2. Through the multiple ribs 1, multiple ribs 2, and the design of plug-in grooves on each rib 1, they can be spliced ​​according to the required length and assembled into a frame. Multiple first side panels 4 and multiple second side panels 5 can be detachably connected to the corresponding ribs 2 by bolts. The first arc panel 6 and the second arc panel 7 can be welded and fixed to the corresponding first arc surface segment 101 and the second arc surface segment 102. The first arc surface segment 101 and the second arc surface segment 102 support the first arc panel 6 and the second arc panel 7, and the groove 104 can support the long groove plate 3; the above-mentioned structural design is small in size and convenient for transportation. It can be transported to the place of use and then assembled. The above-mentioned various structures can be customized according to the required units, which is convenient for processing, reduces equipment requirements, and reduces energy consumption.

[0048] like Figure 1 、 Figure 2 As shown, this embodiment also includes at least two reinforcing strips 8 located within each elongated plate 3. The reinforcing strips 8 are detachably connected to the elongated plate 3 and arranged in a straight line along the length of the elongated plate 3. Adjacent reinforcing strips 8 abut each other end to end, and the abutment points of two adjacent reinforcing strips 8 are offset from the adjacent ribs 1. The reinforcing strips 8 reinforce the elongated plate 3 and prevent deformation. The abutment points of two adjacent reinforcing strips 8 are offset from the corresponding ribs 1 to prevent bending at the connection.

[0049] like Figure 1 、 Figure 2As shown, after assembly, a reinforcing insert 9 is arranged in the long slot plate 3 close to the end side along its width direction, and the reinforcing insert 9 is detachably connected to the long slot plate 3 to achieve reinforcement of the long slot plate 3 in the width direction of the end side.

[0050] In some embodiments, after assembly, a large-scale arc-shaped mold for preparing carbon fiber tubes with curved surfaces comprises four elongated slotted plates 3, each of which has two removable reinforcing strips 8. The two reinforcing strips 8 located at the ends of the elongated slotted plates 3 are shorter than the length of the plates, leaving space for the installation of reinforcing inserts 9. The reinforcing inserts 9 are removably connected to the elongated slotted plates 3 by bolts, thereby reinforcing the elongated slotted plates 3 in the width direction and preventing deformation during use or demolding. The two reinforcing strips 8 in each of the middle elongated slotted plates 3 are equal in length to ensure reinforcement of the elongated slotted plates 3 in the length direction.

[0051] like Figure 3 As shown, the joint of two adjacent long slot plates 3 in this embodiment corresponds to two spliced ​​rib plates 1, and the two rib plates 1 are connected together with countersunk bolts through connecting holes 106, thereby improving the rigidity of the rib plates 1 and ensuring stable support at the joint.

[0052] like Figure 1 As shown, each first arc panel 6 of this embodiment is provided with a transverse reinforcement strip 10 arranged along its length, and the transverse reinforcement strip 10 is fixed to the first arc panel 6, and the transverse reinforcement strip 10 and the first arc panel 6 can be fixed by welding; after assembly, the first arc panel 6 located on the outer end side is provided with a longitudinal reinforcement strip 11 along the width direction; through the design of the transverse reinforcement strip 10 and the longitudinal reinforcement strip 11, the rigid reinforcement of the first arc panel 6 is achieved.

[0053] like Figure 1 As shown, each rib plate 1 of this embodiment is provided with a plurality of weight-reducing holes 105 to reduce the weight of each rib plate 1 and facilitate transportation and splicing.

[0054] The length of each first side panel 4 of the present invention is 500-800 mm; the length of each second side panel 5 is 500-800 mm; the corresponding length can be selected for processing as needed.

[0055] The surfaces of the first side plate 4, the second side plate 5 and the long groove plate 3 of the present invention are provided with Teflon coating, which improves the corrosion resistance of the first side plate 4, the second side plate 5 and the long groove plate 3 and prolongs the service life.

[0056] The ribs 2 of the present invention are made of square steel to ensure rigidity; the rib plates 1 of the present invention are made of steel plates to ensure rigidity; the thickness of the rib plates 1 of the present invention is ≥2 mm to ensure rigidity.

[0057] The present invention also provides a method for preparing a large-scale spliced ​​arc-shaped mold for preparing a carbon fiber tube with an arc-shaped surface based on any one of the above methods, comprising the following steps:

[0058] 101) A plurality of ribs 1 are prepared using steel plates, and a plurality of ribs 2 are prepared using square steel. The plurality of ribs 2 are connected end to end and welded together;

[0059] 102) A first side panel 4 and a first curved panel 6 are made of steel plates, and a second side panel 5 and a second curved panel 7 are made of steel plates. The first side panel 4 and the first curved panel 6 are integrally formed by cold bending using a plate rolling machine, and the second side panel 5 and the second curved panel 7 are integrally formed by cold bending using a plate rolling machine;

[0060] 103) Using steel plate to prepare long trough plate 3;

[0061] 104) Assemble multiple ribs 1 and ribs 2 to form a frame.

[0062] 105) Assemble the long groove plate 3 and the multiple ribs 1 through the grooves of each rib 1;

[0063] 106) Each first side plate 4 is connected to the corresponding rib 2 by bolts, and each second side plate 5 is connected to the corresponding rib 2 by bolts.

[0064] 107) The first curved panel 6 and the second curved panel 7 are welded to the corresponding ribs 1 to obtain a large-scale spliced ​​curved mold for preparing a carbon fiber tube with a curved surface.

[0065] Furthermore, 108 ) reinforcing strips 8 are installed in the long slot plate 3 , and each reinforcing strip 8 is detachably connected to the long slot plate 3 by bolts.

[0066] Furthermore, 109) a transverse reinforcement strip 10 is welded to the first arc panel 6; a reinforcement insert 9 is installed in the groove of the long slot plate 3 at the outer end, and the reinforcement insert 9 is detachably connected to the long slot plate 3; a longitudinal reinforcement strip 11 is welded in the first arc panel 6 at the outer end along its width direction.

[0067] In some embodiments, a large-scale arc-shaped mold for preparing a carbon fiber tube with an arc surface is a four-section assembled structure. Two grooves 104 are provided along the height of the front and rear sides of each rib 1. Each rib is assembled with the ribs through the grooves. After the large-scale arc-shaped mold for preparing a carbon fiber tube with an arc surface is assembled, the assembled structure at both ends includes four ribs 1. In addition to the ribs at the two ends, a rib is added at the splice of the two reinforcing strips 8, and a rib is added adjacent to the reinforcing insert 9 to ensure the stability of the assembled structure. The assembled structure in the middle includes three ribs. In addition to the ribs at the two ends, a rib is added at the splice of the reinforcing strips 8 to ensure stable support. The splice of the reinforcing strips 8 mentioned above is staggered with the adjacent ribs. The two ribs at the connection of two adjacent assembled structures are connected together by countersunk bolts.

[0068] There is no gap at the joint of two adjacent long groove plates 3 of the present invention. Each long groove plate 3 is welded and fixed to the corresponding rib plate.

[0069] In the present invention, there is no gap at the connection between two adjacent first side panels 4; and there is no gap at the connection between two adjacent second side panels 5.

[0070] In the present invention, there is no gap at the connection between two adjacent first curved panels 6; and there is no gap at the connection between two adjacent second curved panels 7.

[0071] 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 above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A large arc-shaped splicing mold for preparing carbon fiber tubes with arc-shaped surfaces, characterized by: The frame comprises a plurality of ribs (1) and a plurality of ribs (2), wherein some of the ribs (1) are provided with connection holes (106); slots (103) are provided at the left and right ends of each rib (1); the plurality of ribs (1) are arranged at intervals and assembled with the plurality of ribs (2) through the slots (103) to form a frame; The upper end surface of each rib plate (1) is an arcuate surface, and a groove (104) is provided on the upper end surface of the rib plate (1). The opposite side walls of the groove (104) penetrate the front end surface and the rear end surface of the corresponding rib plate (1). The groove (104) divides the upper end surface of the rib plate (1) into a first arcuate surface segment (101) and a second arcuate surface segment (102); It also includes a plurality of long slot plates (3), each long slot plate (3) including a long plate (31) matching the bottom of the groove (104), and a vertical plate (32) closely attached to the inner wall of the groove (104) is provided at the left and right ends of the long plate (31); It also includes a plurality of first side panels (4) and a plurality of second side panels (5) respectively arranged on the left and right sides of the rib plate (1), each first side panel (4) and each second side panel (5) being connected to the corresponding rib (2) via a detachable connecting piece, each first side panel (4) having a first curved panel (6) bent at one end thereof and in close contact with the first curved surface segment (101), and each second side panel (5) having a second curved panel (7) bent at one end thereof and in close contact with the second curved surface segment (102); The invention also includes at least two reinforcing fillets (8) located in each long groove plate (3), the reinforcing fillets (8) and the long groove plate (3) are detachably connected, and each reinforcing fillet (8) is arranged in a straight line along the length direction of the long groove plate (3), and two adjacent reinforcing fillets (8) are butted end to end, and the butting point of the two adjacent reinforcing fillets (8) is staggered with the adjacent rib plate (1).

2. The large arc-shaped splicing mold for preparing carbon fiber tubes with arc-shaped surfaces according to claim 1, characterized in that: The joint of two adjacent long groove plates (3) corresponds to two spliced ​​rib plates (1), and the two rib plates (1) are connected to each other through the connecting holes (106) and the countersunk bolts.

3. The large arc-shaped splicing mold for preparing carbon fiber tubes with arc-shaped surfaces according to claim 1, characterized in that: After assembly, a reinforcing insert (9) is arranged in the long slot plate (3) close to the end side along the width direction thereof, and the reinforcing insert (9) is detachably connected to the long slot plate (3).

4. The large arc-shaped splicing mold for preparing carbon fiber tubes with arc-shaped surfaces according to claim 1, characterized in that: Each first arc panel (6) is provided with a transverse reinforcement strip (10) arranged along its length, and the transverse reinforcement strip (10) is fixedly connected to the first arc panel (6); After assembly, a longitudinal reinforcement strip (11) is arranged on the first curved panel (6) located on the outer end side along the width direction.

5. The large arc-shaped splicing mold for preparing carbon fiber tubes with arc-shaped surfaces according to claim 1, characterized in that: Each rib (1) is provided with a plurality of weight-reducing holes (105).

6. The large arc-shaped splicing mold for preparing carbon fiber tubes with arc-shaped surfaces according to claim 1, characterized in that: The length of each first side plate (4) is 500-800 mm; the length of each second side plate (5) is 500-800 mm; The surfaces of the first side plate (4), the second side plate (5), and the long groove plate (3) are provided with a Teflon coating; The ribs (2) are made of square steel; The rib plate (1) is made of steel plate; The thickness of the rib (1) is ≥ 2 mm.

7. A method for preparing a large-scale arc-shaped spliced ​​mold for preparing a carbon fiber tube with an arc surface according to any one of claims 1 to 6, characterized in that: The steps include: A plurality of ribs (1) are prepared using steel plates, a plurality of ribs (2) are prepared using square steel, and the plurality of ribs (2) are connected end to end and connected into one body using welding; A first side plate (4) and a first curved panel (6) are prepared using a steel plate, and a second side plate (5) and a second curved panel (7) are prepared using a steel plate. The first side plate (4) and the first curved panel (6) are formed as a whole by cold bending using a plate rolling machine, and the second side plate (5) and the second curved panel (7) are formed as a whole by cold bending using a plate rolling machine. A long groove plate (3) is prepared using a steel plate; Assemble multiple ribs (1) and ribs (2) to form a frame, Assembling the long groove plate (3) and the plurality of rib plates (1) through the grooves of each rib plate (1); Each first side plate (4) is connected to the corresponding rib (2) by bolts, and each second side plate (5) is connected to the corresponding rib (2) by bolts. The first curved panel (6) and the second curved panel (7) are welded to the corresponding ribs (1) to obtain a large-scale spliced ​​curved mold for preparing a carbon fiber tube with a curved surface; reinforcing strips (8) are installed in the long groove plate (3), and each reinforcing strip (8) is detachably connected to the long groove plate (3) by bolts.

8. The method for preparing a large-scale arc-shaped spliced ​​mold for preparing a carbon fiber tube with an arc surface according to claim 7, characterized in that: A transverse reinforcement strip (10) is welded to the first arc panel (6); a reinforcement insert (9) is installed in the groove of the long slot plate (3) at the outer end, and the reinforcement insert (9) is detachably connected to the long slot plate (3); and a longitudinal reinforcement strip (11) is welded in the first arc panel (6) at the outer end along its width direction.

Images