A composite material part bonding assembly tool and use method thereof

Abstract

The present invention discloses a composite material part gluing assembly tool and a method of using the tool in the technical field of composite material part molding, the tool comprising a bracket assembly and a pressurized positioning plate assembly mounted on the bracket assembly, the pressurized positioning plate assembly being used to continuously pressurize the gluing position of the composite material part that needs to be glued. The pressurized positioning plate assembly comprises a positioning plate mounted on a tripod; a pressurizing unit is mounted on the positioning plate; the pressurizing unit is used to pressurize the gluing position of the composite material part through a pressure strip, the profile of the pressure strip respectively matches the profile of the composite material part at its installation position. The present invention can continuously pressurize the gluing position of the composite material part that needs to be glued, has the characteristics of compact structure, convenient operation, strong versatility, etc., and is particularly suitable for the gluing of special-shaped cylinders.

Description

Technical Field

[0001] The invention belongs to the technical field of composite material part molding, and in particular relates to a composite material part gluing and assembling tool and a use method thereof. Background Art

[0002] In the field of aerospace, carbon fiber composite parts are mostly formed by secondary bonding in some areas where the force requirements are small and it is not easy to form one piece. Secondary bonding requires pressure to be applied to the bonded parts and adhesives. The current pressurization methods include: vacuum bag pressurization, bolt tightening pressurization, hot press pressurization, and tensioning belt pressurization. It is impossible to pay attention to the gelation of the adhesive at all times when using vacuum bags for pressurization. In addition, for cylindrical curved structures such as special-shaped cylinders, which have compact structures, limited space, high positioning requirements, and parts that need to be pressurized in both circumferential directions, vacuum bag pressurization or hot press pressurization are complicated to operate, with high time and labor costs, and the final bonding effect is not ideal; when using bolts to tighten pressurization, the pressure will be released when the adhesive solidifies and shrinks, and the effect of continuous pressurization cannot be achieved. It is necessary to tighten the bolts continuously to apply pressure; using tensioning belts to pressurize special-shaped cylinders is prone to slippage, and the pressurization effect is not good. Summary of the invention

[0003] In order to solve the deficiencies in the prior art, the present invention provides a composite material part gluing assembly tool and a method of using the tool, which can continuously pressurize the gluing position of the composite material part that needs to be glued, has the characteristics of compact structure, easy operation, strong versatility, etc., and is particularly suitable for the gluing of special-shaped cylinders.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] In a first aspect, a composite material workpiece bonding assembly tool is provided, comprising a bracket assembly and a pressurized positioning plate assembly mounted on the bracket assembly, wherein the pressurized positioning plate assembly is used to continuously pressurize a bonding position of a composite material workpiece to be bonded.

[0006] Furthermore, the support assembly includes a workbench, on which a plurality of tripods are installed; the tripods are used to install the pressurized positioning plate assembly.

[0007] Furthermore, the pressurized positioning plate assembly includes a positioning plate installed on the tripod, and a pressurizing unit is installed on the positioning plate. The pressurizing unit is used to pressurize the bonding position of the composite material part through a pressure strip, and the surface of the pressure strip matches the surface of the composite material part at its installation position.

[0008] Furthermore, the pressure unit includes a pressure shaft, a pressure plate and a spring; the pressure plate includes a fixed end and a supporting end, the fixed end is used to connect with the positioning plate, and the supporting end is provided with a locking hole; the pressure shaft includes an operating end and a round head end for abutting against the pressure strip, a first limit card point and a second limit card point that can pass through the locking hole are provided between the operating end and the round head end, and the spring is installed between the first limit card point and the supporting end of the pressure plate.

[0009] Furthermore, the angle between the fixed end and the supporting end is a right angle or an obtuse angle.

[0010] Furthermore, the pressurizing unit further comprises a pressing block, which is connected to the positioning plate and is used to fix the positioning edge of the T-shaped flange on the positioning plate.

[0011] Furthermore, the positioning plate includes a first positioning plate, a second positioning plate and a third positioning plate respectively installed on the tripod; the first positioning plate and the second positioning plate are mirror-symmetrical and are respectively connected to the tripod bolts, and each includes at least one positioning bolt, and the positioning bolt is used to realize the rotation opening and closing of the first positioning plate and the second positioning plate; the third positioning plate is connected to the tripod bolts through a plurality of positioning bolt holes and guide bolt holes arranged thereon, and the guide bolt holes are used to realize the gravity downward movement of the third positioning plate; the first positioning plate, the second positioning plate and the third positioning plate are respectively installed with a plurality of pressurizing units.

[0012] Furthermore, the pressurized positioning plate assembly also includes a T-shaped calibration plate, which is fixedly connected to the first positioning plate and the second positioning plate respectively, and is used to maintain the relative positions of the first positioning plate and the second positioning plate.

[0013] Furthermore, the workbench is formed by splicing a plurality of legs and beams, and a plurality of tripods are installed on the workbench; and a plurality of reference holes for adjusting the positions of the tripods and the pressurized positioning plate assembly are provided on the workbench.

[0014] In a second aspect, a method for using a composite material part gluing and assembly tool is provided, including: adjusting the relative positions between a pressurized positioning plate assembly and a bracket assembly; lifting a pressure shaft in the pressurized positioning plate assembly; fixing a positioning edge of a T-flange for gluing composite material parts on the positioning plate; placing a pressure strip at a gluing position to be tightened, lowering the pressure shaft, with the spring in a compressed state, and the round head end of the pressure shaft pressing on the pressure strip.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) The present invention can continuously pressurize the bonding position of the composite material parts to be bonded by means of the bracket assembly and the pressure positioning plate assembly, and has the characteristics of compact structure, convenient operation, strong versatility, etc., and is particularly suitable for bonding of special-shaped cylinders;

[0017] (2) The present invention solves the problem of difficulty in applying secondary bonding pressure to composite materials with special-shaped curvature structures, especially for parts such as special-shaped cylinders that require pressure in the circumferential direction;

[0018] (3) The oblique pressure application method of the present invention reduces the warping of the flange positioning edge and the problem of inaccurate positioning;

[0019] (4) The structure of the upper positioning plate rotating left and right to open and close and the lower positioning plate moving downward by gravity greatly facilitates the operation of the operator, is convenient, fast, time-saving and labor-saving;

[0020] (5) The present invention solves the problem of operation in a narrow space; compared with bagging pressurization, pressurization by a press machine and tightening belt pressurization, it is more convenient to observe the pressurized bonding condition. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a special-shaped composite material part applicable to a composite material part adhesive assembly tool provided in an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the state of a composite material component adhesive assembly tool provided by an embodiment of the present invention when in use;

[0023] Figure 3 is a schematic structural diagram of a bracket assembly in an embodiment of the present invention;

[0024] Figure 4 is a partial enlarged view of the pressurized positioning plate assembly in the embodiment of the present invention in the use state;

[0025] Figure 5 The schematic diagram of the connection relationship between the pressurized positioning plate assembly and the L-shaped bracket in the embodiment of the present invention is Figure 1 ;

[0026] Figure 6 1 is a schematic structural diagram of a T-shaped flange for connecting special-shaped composite material parts in an embodiment of the present invention;

[0027] Figure 7 The working state of the pressurizing unit in the embodiment of the present invention is shown in FIG. Figure 1 ;

[0028] Figure 8 is a schematic structural diagram of a pressure shaft in an embodiment of the present invention;

[0029] Fig. 9is a schematic structural diagram of a pressure plate in an embodiment of the present invention;

[0030] Fig.10 The working state of the pressurizing unit in the embodiment of the present invention is shown in FIG. Figure 2 ;

[0031] Fig.11 2 is a schematic diagram of the structure of a pressing block according to an embodiment of the present invention;

[0032] Fig.12 is a schematic diagram of the installation state of the calibration plate in an embodiment of the present invention;

[0033] Fig.13 The schematic diagram of the connection relationship between the pressurized positioning plate assembly and the L-shaped bracket in the embodiment of the present invention is Figure 2 ;

[0034] Fig.14 yes Fig.13 Rear view of

[0035] Fig.15 The working state of the pressurizing unit in the embodiment of the present invention is shown in FIG. Figure 3 ;

[0036] Fig.16 is a schematic diagram of operating a pressure shaft in an embodiment of the present invention;

[0037] Fig.17 Schematic diagram of the connection state of the positioning bolts between the pressurized positioning plate assembly and the L-shaped bracket in the embodiment of the present invention;

[0038] Fig.18 is a schematic diagram of the first positioning plate and the second positioning plate rotating to open and close and the third positioning plate falling due to gravity in an embodiment of the present invention;

[0039] Fig.19 Schematic diagram of a homemade wrench for operating a pressure shaft in an embodiment of the present invention;

[0040] In the figure, 1, bracket assembly; 101, leg; 102, crossbeam; 103, L-shaped tripod; OPT, reference hole; 2, pressurized positioning plate assembly; 201, first positioning plate; 202, second positioning plate; 203, third positioning plate; 2031, positioning bolt hole; 2032, guide bolt hole; 204, positioning bolt; 205, pressure strip; 206, silicone pad; 207, calibration plate; 2071, positioning block; 2072, knurled nut; 208, pressure shaft; 2081, operating end ; 20811, hexagonal; 2082, round head end; 2083, first limit point; 2084, fastening bolt hole; 20841, second limit point; 2085, nut; 209, pressure plate; 2091, fixed end; 2092, support end; 20921, lock hole; 210, spring; 211, pressure block; 2111, butterfly bolt; 212, homemade wrench; 3, cylinder mold; a, flange; a1, positioning edge; b, cylinder; F0, surface normal; T, surface tangent. DETAILED DESCRIPTION

[0041] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0042] Embodiment 1:

[0043] like Figure 1 to Figure 19 As shown, this embodiment takes the bonding of special-shaped cylinders as an example for explanation. Figure 1 As shown, the special-shaped cylinder is formed by secondary bonding of flange a and cylinder b. The flange structure is annular and divided into two petals. The bonding is performed around the cylinder. Therefore, the force applied by the secondary bonding should also be distributed circumferentially, which increases the difficulty of the bonding work. Considering the cost and operability of other pressurization methods, the tooling described in this embodiment is adopted.

[0044] A composite material workpiece bonding assembly tool comprises a bracket assembly 1 and a pressurized positioning plate assembly 2 mounted on the bracket assembly 1, wherein the pressurized positioning plate assembly 2 is used to continuously pressurize the bonding position of the composite material workpiece to be bonded, such as Figure 2 shown.

[0045] like Figure 3As shown, the support assembly 1 includes a workbench composed of a plurality of legs 101 and a crossbeam 102, on which a plurality of L-shaped legs 103 are mounted; and the pressurized positioning plate assembly 2 is mounted on the L-shaped legs 103. The workbench is a welded frame structure, and a plurality of reference holes OPT for adjusting the positions of the L-shaped legs and the pressurized positioning plate assembly are provided on the workbench. In this embodiment, four reference holes OPT are designed on the welding plate on the top surface of the workbench, and the reference holes OPT are used to adjust the relative positions of the L-shaped tripod 103 and the pressurized positioning plate assembly 2 as a whole on the workbench; the L-shaped tripod 103 is used for positioning and fixing during the repeated disassembly and assembly of the pressurized positioning plate assembly 2. The position of the L-shaped tripod 103 is determined during the manufacture of the tooling. The L-shaped tripod 103 and the pressurized positioning plate assembly 2 are first connected as one, and then the coordinate positions of the target holes PT (not shown in the accompanying drawings) on each pressurized positioning plate assembly 2 are adjusted by using the four reference holes OPT on the bracket through a laser tracker. After adjustment, the L-shaped tripod 103 is locked on the workbench with bolts to form an integral body with the workbench and no longer be disassembled. In this way, the pressurized positioning plate assembly 2 will not change its position even if it is repeatedly disassembled and assembled. The main functions of the bracket assembly 1 are: 1. to increase the height of the tooling to facilitate workers' operation; 2. to position the special-shaped cylinder with the cylinder mold 3; 3. to position each pressurized positioning plate assembly to ensure the relative assembly position of each flange and reinforcing rib on the cylinder.

[0046] In this embodiment, there are 5 groups of pressurized positioning plate assemblies, each of which has a similar structure and the same basic principle. Therefore, taking one of them as an example, the structure, working principle, design ideas and advantages of the pressurized positioning plate assembly are introduced.

[0047] like Figure 4~Figure 6 , Figure 13~Figure 14 , Fig.18As shown, the pressurized positioning plate assembly 2 has a total of 3 positioning plates, wherein there are 2 upper positioning plates, including a first positioning plate 201 and a second positioning plate 202 respectively mounted on the L-shaped bracket 103 by equal height bolts, and 1 lower positioning plate, which is a third positioning plate 203 mounted on the L-shaped bracket 103 by equal height bolts; the first positioning plate 201 and the second positioning plate 202 are mirror-symmetrical, and each includes at least one positioning bolt 204 (one of the equal height bolts is used as a positioning bolt), and the positioning bolt 204 is used to realize the rotation of the first positioning plate 201 and the second positioning plate 202 Turn to open and close; the third positioning plate 203 is bolted to the L-shaped tripod 103 by means of a plurality of positioning bolt holes 2031 and guide bolt holes 2032 arranged thereon, and the guide bolt holes 2032 are used to realize the gravity downward movement of the third positioning plate 203; a plurality of pressurizing units are respectively installed on the first positioning plate 201, the second positioning plate 202 and the third positioning plate 203; the pressurizing unit is used to pressurize the bonding position of the composite material part through the pressure strip 205, and there are multiple pressure strips, and the surface of each pressure strip 205 matches the surface of the composite material part at its installation position.

[0048] In this embodiment, the cross section of flange a is T-shaped. Figure 6 As shown, the vertical edge of flange a is the positioning edge a1. The edges of the positioning edge a1 glued to the cylinder body on both sides need to be pressurized, so pressure strips and pressure devices are designed on both sides. The pressure strip 205 follows the profile of the flange a glued profile, and a layer of 2mm silicone pad 206 is added between the profile of the flange to be pressurized to protect the flange. The pressure strip on one side of the positioning edge a1 is divided into 3 sections, which are symmetrical along the central axis of the flange. There are 12 pressure strips 205 in total.

[0049] Since the upper positioning plates are two symmetrical pieces, which are fixed on the L-shaped foot frame 103, with a suspended section in the middle, the calibration plate 207 is designed to ensure the rigidity of the suspended section in the middle and the coplanarity of the two upper positioning plates, and to connect the two upper positioning plates into one. The calibration plate 207 is T-shaped, with four bolt holes in the upper part of the T-shaped plate, and the bolts are used to level the two upper positioning plates. A bolt hole is opened in the lower part of the T-shaped plate, and the bolt passes through the hole and the gap between the two upper positioning plates, and is connected to the positioning block 2071 and the knurled nut 2072 (a butterfly nut can also be used) on the other side of the upper positioning plate. Figure 5 , Fig.12 shown.

[0050] like Figure 4~Figure 5 , Figure 7~Figure 11 , Figure 15-16 , Fig.19As shown, the pressure unit includes a pressure shaft 208, a pressure plate 209 and a spring 210; the pressure shaft 208 includes an operating end 2081 and a round head end 2082 for abutting against the pressure strip 205, the operating end 2081 is provided with an external thread, and a first limit point 2083 and a second limit point 20841 that can pass through the lock-shaped hole 20921 are provided between the operating end 2081 and the round head end 2082, and the spring 210 is installed between the first limit point 2083 and the second limit point 20841. The pressure shaft 208 is a stepped shaft, the round head end 2082 contacts the pressure strip 205, the operating end 2081 is a threaded section, and a nut 2085 can be installed to limit the pressure shaft 208 to prevent it from falling off from the lock hole 20921 on the pressure plate 209. A hexagonal 20811 with a smaller circle is processed near the top of the operating end 2081 (due to the small space, the fingers cannot operate, and a homemade small wrench is used ( Fig.19 ) to clamp the hexagonal operation), a fixing bolt hole 2084 is opened in the middle position of the pressure shaft 208 to install a fixing screw, forming a clamping point of the pressure shaft, that is, the second limit clamping point 20841 (the fixing screw hole here can also be omitted, and a small protrusion can be directly welded at the position where the fixing screw of the pressure shaft is installed, which can also achieve the effect of opening a fixing screw hole to install the fixing screw, so that there is a clamping point on the pressure shaft).

[0051] The pressure plate 209 is L-shaped, including an integrally formed fixed end 2091 and a supporting end 2092; the fixed end 2091 is drilled with two bolt holes for connecting with the first positioning plate 201, the second positioning plate 202 or the third positioning plate 203, and the supporting end 2092 is provided with a lock hole 20921 for the pressure shaft to pass through the pressure plate 209. The angles of each pressure plate 209 are determined according to the normal direction of the actual flange surface, so the angles are not consistent. Usually, the angle between the fixed end 2091 and the supporting end 2092 is a right angle or an obtuse angle, but the working principle and general structure are the same. The assembly relationship is as follows: Fig.10 As shown, first install the pressure plate 209 on the positioning plate, then screw the set screw into the pressure shaft, leaving the set screw head protruding about 1mm outside the pressure shaft, forming the second limit point 20841 of the pressure shaft 208, and the spring 210 is inserted from the threaded end of the pressure shaft 208, and finally the pressure shaft 208 is passed through the lock hole 20921 of the pressure plate 209 as a whole. When the spring 210 hits the plane of the pressure plate 209, screw on the nut 2085, then release your hand, the pressure shaft can be hung on the pressure plate 209 because of the nut, and the spring 210 is also in a natural state. There are about 1 to 3 on a pressure strip, and the specific number is related to the size of the pressure strip, which is described in detail below.

[0052] The pressure block 211 is locked on the first positioning plate 201, the second positioning plate 202 or the third positioning plate 203 using a butterfly bolt 2111, and is used to fix the positioning edge of the T-shaped flange on the first positioning plate 201, the second positioning plate 202 or the third positioning plate 203, and to assist in applying pressure to the flange positioning edge so that the flange positioning edge can be stuck to the positioning clamping plate to ensure the position of the flange on the special-shaped cylinder body.

[0053] Working principle:

[0054] The core part of this tooling is the pressurizing unit, and the pressurizing principle is to use the continuous force generated by the compression of the spring 210 to pressurize the flange. Fig.15 As shown, generally the bonding pressure should be perpendicular to the curved surface, and the pressure should be applied along the normal direction F0 of the curved surface (perpendicular to the tangent direction T of the curved surface). However, in this embodiment, the flange is T-shaped, and its positioning edge a1 also needs to apply force to fit it with the positioning surface, so the direction of the force is deflected by a certain angle. The tooling can be deflected by 0~45°. The angle should not be too large. If the angle is too large, the pressure used for bonding will be too small, and the positioning edge a1 and the positioning plate will be pressed too tightly. During bonding, the flange cannot jump up and down, and the pressure block 211 cannot be pressed down, thereby affecting the bonding quality. In this embodiment, the deflection angle is 30°; after deflecting a certain angle, the force F on the pressure rod has a component force, and the component force F 1 Used for bonding flange and cylinder, force F 2 It is used to ensure that the flange positioning edge is in close contact with the positioning plate. In addition, this force application method, such as the curved surface of the special-shaped cylinder, is from low to high, which can prevent the pressure strip 205 from sliding down along the adhesive slope. Since the force of pressing the positioning edge and the positioning plate is uncertain, in order to avoid the force F 2 It may not be sufficient, and a pressing block 211 is added to assist in tightening the positioning edge by utilizing the tightness of the tightening nut.

[0055] like Fig.16 As shown, before gluing, a self-made wrench 212 with a structure similar to an open-end wrench is used to fork the hexagonal 20811 of the pressure shaft 208, and the pressure shaft 208 is lifted in the direction close to the pressure plate 209, so that the second limit point 20841 on the pressure shaft 208 passes through the lock-shaped hole 20911 of the pressure plate 209. After passing through, the pressure shaft 208 is rotated so that the second limit point 20841 avoids the opening of the lock-shaped hole 20911, and then the pressure shaft 208 is released, and the pressure shaft 208 is stuck. During gluing, after placing the pressure strip 205, the pressure shaft 208 is pulled by a wrench, and the spring 210 will pop out with the pressure shaft 208, thereby pressing the pressure strip 205. At this time, the spring 210 is still in a compressed state, and the compressed spring 210 will generate a certain force, which will be transmitted to the flange through the pressure shaft 208 to support the pressure strip 205. Even in the process of the resin glue solidifying and thinning, the pressure is continuously applied.

[0056] Each positioning plate and L-shaped bracket 103 of the tooling are positioned and clamped with equal height bolts. Fig.17 As shown, the positioning plate and the L-shaped bracket 103 are secured in relative position by the pin rod section of the equal height bolt, and then the threaded section is used to tighten the nut. Fig.18 As shown, the upper positioning plate (i.e., the first positioning plate 201 and the second positioning plate 202) has two equal height bolts. The equal height bolts in the lower corners are used for positioning and also as the rotation axis of the upper positioning plate. A triangular opening is opened in the upper corner of the upper positioning plate as a handle for rotating and pulling; the lower positioning plate (i.e., the third positioning plate 203) has four equal height bolts, two of which play a positioning and clamping role, and the other two serve as guide pins. The corresponding position on the lower positioning plate is a longitudinal waist-shaped hole (i.e., the guide bolt hole). When the two equal height bolts for positioning and clamping are pulled out, the lower positioning plate can be prevented from falling forward, and at the same time, the lower positioning plate can be restricted from sliding downward under the action of gravity. This method greatly facilitates the operation. During operation, you only need to pull out the corresponding equal height bolts, and the lower positioning plate will automatically slide down and disengage. The upper positioning plate only needs to be moved with a little force, and there is no need to disassemble the entire positioning plate for transportation.

[0057] Parameter design:

[0058] The general bonding pressure is 3~50Psi (i.e. 0.0207MPa~0.345MPa), and the designed secondary bonding strip is in contact with the workpiece in an area of ​​S=0.004m2. According to the pressure format, the force required to be applied to the pressure block is F=PS=82.8N~1380N; if the pressure is 108N, and the pressure axis is designed at 3 locations, then the component force F1=108 / 3=36N along the normal direction of the surface is required to be evenly distributed on each pressure axis, and the component angle is 30°. Therefore, according to the formula, it can be concluded that the force generated on the pressure axis during operation is F=F1 / cos30°≈41.57N. Considering that there needs to be space for inserting and removing the strip, the spring cannot be in a fully compressed state during bonding, but should be in a semi-compressed state, so it needs to be multiplied by the coefficient n, so the working limit load of the spring is P j =F / n, if n is 0.5, then P j It is 83N, and then according to the standard parameter table of cylindrical helical compression springs, the corresponding spring is found to be 1.4×10. The length is combined with the actual space required to plug / remove the pressure strip and the calculation formula of various parameters of the compression spring to obtain the length suitable for this set of tooling.

[0059] The pressurizing unit of the present invention can increase or decrease the bonding pressure according to the actual bonding situation, thereby reducing the cost of repeated tests and tooling modifications and shortening the project cycle.

[0060] The above parameters are examples, and many parameters can be changed. Specific parameters need to be set according to actual needs. The setting follows the following principles: 1. Set the pressure according to the actual bonding pressure and the area of ​​the contact surface between the pressure strip and the bonding; 2. Consider the operating space and arrange the number of pressure devices reasonably; 3. If you use manual compression springs, you need to consider the maximum force that a person can withstand. For example, if the required force of the compression spring is 150N, an operator needs to be able to lift an object of 15KG, so try not to exceed 100N. You can increase the length of the spring (because of Hooke's law F=kx, when the length of the spring increases, the greater the amount of compression that the spring can have, the smaller its coefficient, and the space △x required to insert / remove the pressure strip is constant, then the additional force △F=k△x required to stretch the spring is smaller), or increase the number of pressure devices to reduce P. j ;

[0061] If the actual required bonding pressure is high, the space is limited, the spring compression pressure is high, and the operator cannot use a homemade wrench to compress the spring, an additional set of Fig.19 It is operated by the force-saving clamp shown in the figure (the principle of the force-saving lever is not elaborated in detail).

[0062] The present invention successfully reduces the warping of the flange positioning edge and the problem of inaccurate positioning through the structure of the external pressure block of the oblique force-applying shaft; the force-applying device of the tooling can increase or decrease the bonding pressure according to the actual bonding situation; increase: 1. Add gaskets to the spring and angle steel parts to make the spring tighter in the working state, thereby increasing the pressure; 2. Replace with a spring with a larger wire diameter; 3. Replace the pressure plate, and reduce the deflection angle of the pressure plate to increase the force component. Reduce: 1. Replace with a spring with a smaller wire diameter; 2. Increase the length of the spring; 3. Replace the angle steel, and increase the deflection angle of the angle steel to reduce the force component. In narrow spaces, it is simple and convenient to operate with a homemade wrench; the flipping of the upper positioning plate and the sliding of the lower positioning plate greatly reduce the burden of employees' handling; compared with bagging pressurization, press pressurization and tightening belt pressurization, it is more convenient to observe the pressurized bonding situation, and the pressure at each point is more variable and adjustable.

[0063] The invention is not only suitable for simple flat plate bonding, but also suitable for composite material assembly bonding of various cylindrical and annular special-shaped curved surface structures. The tooling can adjust the pressure applied according to actual conditions, and can change the pressure direction by replacing some small parts.

[0064] Embodiment 2:

[0065] Based on the composite material component adhesive assembly tool described in the first embodiment, this embodiment provides a method for using the composite material component adhesive assembly tool, including:

[0066] 1. Adjust the relative position between the pressurized positioning plate assembly and the bracket assembly; specifically, adjust the relative position between the tripod, the pressurized positioning plate assembly, and the workbench, use the reference hole and the target hole to adjust the position of the pressurized positioning plate assembly on the workbench, and install the two parts into one;

[0067] 2. Lift all pressure shafts with a wrench through the operating end, so that the second limit point on the pressure shaft passes through the lock hole on the pressure plate;

[0068] 3. Pull out the equal-height bolts of each pressurized positioning plate assembly, so that the lower positioning plate of the pressurized positioning plate assembly moves downward and disengages, and the upper positioning plate rotates to both sides and opens;

[0069] 4. Position and lock the special-shaped cylinder and the cylinder mold as a whole using the positioning plates at both ends of the tooling positioning bracket;

[0070] 5. Turn the upper positioning plate back, lift the lower positioning plate, insert the equal height bolts back for positioning, and install the calibration plate on the upper positioning plate;

[0071] 6. Place the flange, use the flange positioning edge to tightly position it against the positioning plate, then install the pressing block, apply resin glue, and use the pressing block to press the flange positioning edge; adjust the pressing block to fix the positioning edge of the T-shaped flange used for bonding the composite material workpiece on the first positioning plate, the second positioning plate and / or the third positioning plate;

[0072] 7. Place a silicone pad and a pressure strip on the curved surface of the flange, place the pressure strip at the bonding position to be tightened, lower the pressure shaft, compress the spring, and press the round head end on the pressure strip; loosen the nut of the pressure block a little so that the pressure strip can press the bonding surface to apply pressure to the resin glue.

[0073] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A composite material parts bonding assembly tool, characterized in that: It comprises a bracket assembly and a pressurized positioning plate assembly installed on the bracket assembly, wherein the pressurized positioning plate assembly is used to continuously pressurize the bonding position of the composite material workpiece that needs to be bonded; The pressurized positioning plate assembly comprises a positioning plate and a pressurizing unit; The pressurizing unit comprises a pressure shaft, a pressure plate and a spring; the pressure plate comprises a fixed end and a supporting end, the fixed end is used to connect with the positioning plate, and the supporting end is provided with a locking hole; the pressure shaft comprises an operating end and a round head end used to abut against the pressure strip, a first limit clamping point and a second limit clamping point that can pass through the locking hole are provided between the operating end and the round head end, and the spring is installed between the first limit clamping point and the supporting end of the pressure plate; The pressurizing unit further comprises a pressing block, which is connected to the positioning plate and is used to fix the positioning edge of the T-shaped flange on the positioning plate.

2. The composite material parts gluing assembly tool according to claim 1, characterized in that: The support assembly comprises a workbench, on which a plurality of tripods are mounted; the tripods are used to mount the pressurized positioning plate assembly.

3. The composite material parts gluing assembly tool according to claim 2, characterized in that: The positioning plate is mounted on the tripod, and the pressurizing unit is used to pressurize the bonding position of the composite material part through the pressure strip, and the profile of the pressure strip matches the profile of the composite material part at the installation position thereof.

4. The composite material parts gluing assembly tool according to claim 1, characterized in that: The angle between the fixed end and the supporting end is a right angle or an obtuse angle.

5. The composite material parts adhesive bonding assembly tool according to claim 2, characterized in that: The positioning plate includes a first positioning plate, a second positioning plate and a third positioning plate respectively installed on the tripod; the first positioning plate and the second positioning plate are mirror-symmetrical, and are respectively connected to the tripod bolts, and each includes at least one positioning bolt, and the positioning bolt is used to realize the rotation opening and closing of the first positioning plate and the second positioning plate; the third positioning plate is connected to the tripod bolts through a plurality of positioning bolt holes and guide bolt holes arranged thereon, and the guide bolt holes are used to realize the gravity downward movement of the third positioning plate; a plurality of pressurizing units are respectively installed on the first positioning plate, the second positioning plate and the third positioning plate.

6. The composite material parts adhesive bonding assembly tool according to claim 5, characterized in that: The pressurized positioning plate assembly also includes a T-shaped calibration plate, which is fixedly connected to the first positioning plate and the second positioning plate respectively, and is used to maintain the relative positions of the first positioning plate and the second positioning plate.

7. The composite material parts gluing assembly tool according to claim 2, characterized in that: The workbench is composed of a plurality of legs and beams, and a plurality of tripods are installed on the workbench; and a plurality of reference holes for adjusting the positions of the tripods and the pressurized positioning plate assembly are arranged on the workbench.

8. A method for using the composite material parts adhesive assembly tool according to any one of claims 1 to 7, characterized in that: include: Adjust the relative positions between the pressurized positioning plate assembly and the bracket assembly; Lift the pressure shaft in the pressure positioning plate assembly; Fixing the positioning edge of the T-shaped flange used for bonding the composite material parts on the positioning plate; Place the pressure strip at the glued joint to be compressed, lower the pressure shaft, the spring is in a compressed state, and the round head end of the pressure shaft is pressed on the pressure strip.

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