Curing device and method for cooperatively regulating and controlling adhesive layer thickness and pressing force of lap joint piece

Abstract

The invention discloses a curing device and method for cooperatively regulating and controlling the thickness and the pressing force of an adhesive layer of a lap joint piece, and belongs to the technical field of material testing, the device comprises a locking device, a movable rotating device, a pressure control device, a positioning device and a temperature control device, and the locking device fixes a crank screw rod through a frame and a flange; the rotating device is moved to realize multidirectional adjustment of the sample piece; the pressure control device is matched with the locking device through a dynamometer and a pressure controller to realize pressure regulation, and the positioning device adopts a positioning tool to be matched with a filler gauge and a pin to realize sample piece positioning; the temperature control device comprises an infrared heating lamp and a temperature controller, and the curing time of the adhesive layer is shortened through closed-loop control; according to the method, the positioning device controls the thickness of an adhesive layer, the movable rotating device, the locking device and the pressure control device cooperatively regulate and control pressing force, and the temperature control device is matched to achieve rapid curing of the adhesive layer. The device is low in cost and high in precision, and can be widely applied to the performance test and process optimization of the cementing piece.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of material testing, and particularly relates to a curing device and method for cooperatively regulating the thickness and compression force of a bonding layer of a lap joint. BACKGROUND

[0002] In the field of aerospace, reducing the weight of structural components can directly increase the payload and range of the aircraft, which is a core indicator in structural design and material selection. In most cases, mechanical connection methods such as threaded connection, riveting, etc. cannot be used in structural design, and there are significant physical / chemical property differences between dissimilar materials such as metals and non-metals. Although traditional mechanical connection methods have the advantages of high connection strength and simple process, they can introduce problems such as electrochemical corrosion and stress concentration, and it is difficult to coordinate the physical property differences such as the thermal expansion coefficients of materials. Adhesive bonding technology has become an ideal alternative solution due to its lightweight, corrosion resistance, and vibration reduction advantages, but its performance is significantly affected by factors such as surface treatment, environmental temperature, and load conditions, and there is a risk of interface debonding and slippage. The current core problems include adhesive performance evaluation, process parameter optimization, and efficient and low-cost testing methods and devices.

[0003] The reliability of adhesive bonding technology is highly dependent on the precise regulation of the thickness and compression force of the adhesive layer, which has a complex nonlinear relationship with the shear and tensile properties of the joint. Existing testing methods cannot achieve simultaneous regulation of the parameters, resulting in inaccurate and inefficient performance evaluation of adhesive joints. Therefore, developing a curing device and testing method that can efficiently and cost-effectively regulate the thickness and compression force of the adhesive layer simultaneously has important engineering value for breaking through the bottleneck of dissimilar material connection technology and improving the reliability of aerospace structural connections. Precise and simultaneous control of the adhesive bonding process and optimization of process parameters are currently urgent problems to be solved. SUMMARY

[0004] The present application provides a curing device and method for cooperatively regulating the thickness and compression force of the adhesive layer of a lap joint to address the problems of existing technology, providing an efficient and cost-effective solution for adhesive performance testing, precise control of connection process parameters between dissimilar materials, and performance optimization.

[0005] To solve the above technical problems, the present application provides the following technical solutions: a curing device for cooperatively regulating the thickness and compression force of the adhesive layer of a lap joint, comprising: a locking device, a moving and rotating device, a pressure control device, a positioning device, and a temperature control device.

[0006] The locking device includes a shear locking device and a tensile locking device, which use ascending and descending mechanisms to lock the shear and tensile samples.

[0007] The mobile rotating device comprises a rotating device and a mobile device for realizing multi-directional adjustment of the sample;

[0008] The pressure control device realizes pressure regulation by force measurement function, pressure control function and cooperation with the locking device.

[0009] The positioning device comprises a shearing positioning device and a stretching positioning device, and realizes sample positioning by cooperation of a positioning tool, a plug gauge and a pin.

[0010] The temperature control device shortens the curing time of the glue layer through closed-loop control.

[0011] Further, the shearing locking device comprises a crank, a fine-threaded screw, a handle screw, a first fastening screw, a first flange, a gantry, a second flange, a second fastening screw, a large base plate and a first locking screw.

[0012] The fine-threaded screw is connected to the gantry through the first fastening screw, the gantry is connected to the large base plate, the crank is connected to the fine-threaded screw through the first locking screw, the second flange is connected to the lower end of the fine-threaded screw through the second fastening screw, and rotating the crank drives the fine-threaded screw to rise or fall, and when the up-down position is determined, the handle screw is tightened to lock the fine-threaded screw.

[0013] The stretching locking device comprises a fastening nut, a cross beam, a coarse screw and a small base plate.

[0014] Further, the rotating device comprises a third fastening screw, a fifth silicone rubber gasket, a rotating module, a first silicone rubber gasket, a rotating module handle, a square force transmission member and a fourth fastening screw.

[0015] The upper end of the rotating module is connected to the flange through the fifth silicone rubber gasket and the third fastening screw, and the lower end of the rotating module is connected to the square force transmission member through the silicone rubber gasket and the fourth fastening screw, and when the angle is adjusted, the rotating module handle is twisted clockwise or counterclockwise to realize angle adjustment of the sample position.

[0016] The mobile device comprises a horizontal mobile module, a vertical mobile module, a second locking screw, a horizontal crank, a vertical crank and a third locking screw.

[0017] The second locking screw and the third locking screw are connected to the horizontal mobile module and the vertical mobile module through threads, the horizontal mobile module and the vertical mobile module are fixed to the large base plate of the shearing locking device and the small base plate of the stretching locking device, and the horizontal mobile module handle or the vertical mobile module handle is twisted clockwise or counterclockwise to realize horizontal or vertical position adjustment.

[0018] Further, the aforementioned pressure control device comprises a second silicone rubber gasket, a force gauge, a third silicone rubber gasket, a fifth fastening screw, a force transmission element, a fourth silicone rubber gasket, a pressure controller, and an insulated quick-release protective box.

[0019] The upper end of the force gauge is connected to the square force transmission element through the second silicone rubber gasket and the fourth fastening screw, and the lower end of the force gauge is connected to the force transmission element through the third silicone rubber gasket and the fifth fastening screw. The end of the force transmission element is attached with the fourth silicone rubber gasket, and the third silicone rubber gasket is used to ensure the uniformity of force transmission. The force gauge is connected to the pressure controller, which is installed inside the insulated quick-release protective box.

[0020] Further, the aforementioned insulated quick-release protective box comprises a foot pad, a plastic insulated sliding cover, a plastic insulated shell, a ferrous connecting element, and a magnetic connecting element.

[0021] The insulated quick-release protective box adopts a magnetic quick-release structure. The plastic insulated shell has a square hollow structure with open ends at the top and front. The foot pad is connected to the bottom of the plastic insulated shell. The plastic insulated sliding cover is matched with the top of the plastic insulated shell through a concave-convex fitting structure to realize quick disassembly. The ferrous connecting element is connected to the front opening end of the plastic insulated sliding cover. One end of the magnetic connecting element is connected to the force gauge, and the other end is connected to the ferrous connecting element in a magnetic manner.

[0022] Further, the aforementioned curing device for cooperatively regulating the thickness of the adhesive layer and the compression force of the lap joint comprises: when the upper end of the force gauge has a pressure transmission, the force gauge transmits the force to the outside through the force transmission element, and the pressure controller detects and calculates the applied pressure stress and the compression force acting on the sample. The calculation relationship between the pressure stress and the compression force is as follows:

[0023] σ = F / S

[0024] In the formula, σ is the pressure stress, F is the pressure value displayed by the pressure controller, and S is the area of the circular part at the lower end of the force transmission element.

[0025] Further, the aforementioned shear positioning device comprises a shear positioning tool, a first horizontal plug gauge, a first vertical plug gauge, a first shear sample, a second shear sample, a horizontal large limit block, a sixth fastening screw, a horizontal small limit block, and a seventh fastening screw.

[0026] The shear positioning tool is connected to the horizontal large limit block and the horizontal small limit block through the sixth fastening screw. The first horizontal plug gauge and the first vertical plug gauge are placed in the positioning groove of the shear positioning tool. The first shear sample and the second shear sample coated with adhesive are placed on the shear positioning tool, and the thickness and length of the adhesive layer are adjusted by the first horizontal plug gauge and the first vertical plug gauge.

[0027] The stretching positioning device comprises a stretching positioning tool, a first stretching sample, a second stretching sample, an eighth fastening screw, a handle screw, a ninth fastening screw, a pin, a second longitudinal plug gauge, a second transverse plug gauge, an L-shaped connecting piece, a height plug gauge, a longitudinal small limiting block and a longitudinal large limiting block.

[0028] The stretching positioning tool is connected with the longitudinal small limiting block and the longitudinal large limiting block through the eighth fastening screw, the stretching positioning tool is connected with the transverse moving module through the ninth fastening screw and the L-shaped connecting piece, the pin, the second longitudinal plug gauge, the second transverse plug gauge and the height plug gauge are placed in the pin hole and the positioning groove of the stretching positioning tool, the handle screw is threadedly connected on the stretching positioning tool and the position of the second longitudinal plug gauge is constrained, the first stretching sample and the second stretching sample coated with the adhesive are placed on the stretching positioning tool, and the thickness and the length of the stretching sample are adjusted through the second longitudinal plug gauge, the second transverse plug gauge and the height plug gauge.

[0029] Further, the temperature control device comprises an infrared heating lamp, a temperature controller, a PID controller, a magnetic ring and a temperature probe.

[0030] The temperature controller is used for setting a required temperature, the PID controller collects an actual temperature value measured by the temperature probe, dynamic adjustment of the power of the infrared heating lamp is realized through closed-loop control, the temperature of the adhesive layer region is ensured to be constant, and the curing of the adhesive layer is accelerated through temperature increase in the curing process.

[0031] The application also provides a method for the curing device for cooperatively regulating the thickness and the pressing force of the adhesive layer of a lapping piece.

[0032] S1, preparing a required stretching test to-be-cured adhesive joint or a shearing test to-be-cured adhesive joint according to a national standard;

[0033] S2, uniformly coating an adhesive on a to-be-bonded surface of the shearing sample or the stretching sample required to be tested;

[0034] S3, placing the shearing sample or the stretching sample coated with the adhesive in step S2 on a shearing positioning tool or a stretching positioning tool of a positioning device, and adjusting the thickness and the length of the adhesive layer through each transverse plug gauge, each longitudinal plug gauge and a height plug gauge,

[0035] S4, adjusting the relative position of the shearing sample or the stretching sample and a silicon rubber gasket at the end of a force transmission block in a pressure control device through a moving rotating device, and when the position is in contact and aligned, the adjustment is in place;

[0036] S5, rotating a handle of a fastening device, when the pressure range of a pressure controller is within a preset range, tightening a first locking screw 34 of the fastening device, eliminating the gap between screw threads, and ensuring that the pressure is constant during the curing process;

[0037] S6, turn on the infrared heating lamp of the temperature control device, set the curing temperature, and wait for a preset time before curing is completed;

[0038] S7, turn off the temperature control device and the pressure control device, reverse the tightening of the tightening device, remove the shear sample or the tensile sample, and then carry out the subsequent tensile or shear bonding mechanical property test.

[0039] Compared with the prior art, the beneficial technical effects of the above technical scheme of the present application are as follows:

[0040] 1. The present application proposes a method for efficiently and low-costly controlling the thickness of the adhesive layer and the pressing force before the shear or tensile test of the bonded sample, and realizing synchronous curing, which solves the problem of difficult accurate and coordinated control of the thickness of the adhesive layer and the pressing force during the tensile or shear test of the adhesive and the sample.

[0041] 2. The present application designs a high-efficiency and low-cost adhesive layer control device, which is simple and reliable, and can adjust the thickness and length of the adhesive layer in the shear or tensile direction through the positioning device, solves the problem of difficult positioning and operation of glass beads or small metal rods in the shear or tensile bonding and curing, and the plug gauge and the pin in the positioning device are standard parts, which are low in cost and simple and reliable.

[0042] 3. The present application designs a high-efficiency and low-cost pressing force control device, which realizes the application and control of the pressing force of the adhesive layer in the shear or tensile direction through the pressure control device and the tightening device, and has compact structure, low cost and simple and reliable.

[0043] 4. In the pressure control device, the present application designs a high-efficiency and low-cost magnetic type insulation quick-release power distribution box structure, which effectively avoids the problem that the original power distribution box has exposed wires and lacks isolation safety protection, and can be quickly installed and disassembled, and the power distribution box structure is compact, low in cost and easy to use.

[0044] 5. The present application designs a high-efficiency and low-cost local temperature closed-loop control device, which adopts a closed-loop temperature control scheme combining an infrared heating lamp and a magnetic type temperature probe, realizes accurate regulation and control of the curing temperature of the adhesive layer through a PID controller, and integrates a temperature controller, a power supply and other standardized modules, which not only ensures the stability of the temperature of the adhesive layer area, but also significantly improves the curing efficiency, and the magnetic structure design makes the temperature probe have the characteristics of quick positioning and adsorption, and cooperates with the modular electrical device, so that the whole device has the advantages of convenient operation and economy, and provides a reliable local heating solution for the bonding process. BRIEF DESCRIPTION OF DRAWINGS

[0045] Figure 1 is the front view of the shear sample synchronous curing device in the embodiment.

[0046] Figure 2 is a top view of the shear sample piece cooperative curing device in the embodiment.

[0047] Figure 3 is a top view of the positioning device of the shear sample piece cooperative curing device in the embodiment, a sectional view and a partial enlarged view.

[0048] Figure 4 is a top view, a sectional view and a partial enlarged view of the positioning device of the shear sample piece cooperative curing device in the embodiment;

[0049] Figure 5 is a front view of the tensile sample piece cooperative curing device in the embodiment.

[0050] Figure 6 is a left view and a rear view of the tensile sample piece cooperative curing device in the embodiment.

[0051] Figure 7 is a top view, a sectional view and a partial enlarged view of the tensile sample piece cooperative curing device in the embodiment.

[0052] Figure 8 is an exploded view of the insulation quick-release protection box of the pressure control device in the embodiment.

[0053] Figure 9 is a schematic view of the temperature control device in the embodiment.

[0054] Figure 10 is a closed-loop control strategy diagram of the temperature control device in the embodiment.

[0055] Figure 11 is an implementation flowchart of the method of the present application.

[0056] In the figure, 1 - handle, 2 - fine toothed screw 3 - handle screw, 4 - first fastening screw, 5 - first flange, 6 gantry, 7 - second flange, 8 - second fastening screw, 9 - third fastening screw, 10 fifth silicone rubber gasket, 11 rotating module, 12 - first silicone rubber gasket, 13 - rotating module handle, 14 - square force transfer piece, 15 - fourth fastening screw, 16 - second silicone rubber gasket, 17 - force gauge, 18 - third silicone rubber gasket, 19 - fifth fastening screw, 20 - force transfer piece, 21 - fourth silicone rubber gasket, 22 - shearing positioning tool, 23 - transverse movement module, 24 - longitudinal movement module, 25 - infrared heating lamp, 26 - pressure controller, 27 - foot pad, 28 - temperature controller 28, 29 - PID controller, 30 - plastic insulated sliding cover, 31 - plastic insulated shell, 32 - ferrous connector, 33 - magnetic connector, 34 - first locking screw, 35 - large base plate, 36 - second locking screw, 37 - transverse handle, 38 - first transverse plug gauge, 39 - first longitudinal plug gauge, 40 - longitudinal handle, 41 - first shearing sample, 42 - third locking screw, 43 - magnetic ring, 44 temperature probe, 45 - second shearing sample, 46 - transverse large limit block, 47 - sixth fastening screw, 48 - transverse small limit block, 49 - seventh fastening screw, 50 - fastening nut, 51 - cross beam, 52 - coarse screw, 53 - tensile positioning tool, 55 - first tensile sample, 56 - second tensile sample, 57 - eighth fastening screw, 58 - handle screw, 59 - ninth fastening screw, 60 - pin, 61 - second longitudinal plug gauge, 62 - second transverse plug gauge, 63 - L-shaped connector, 64 - height plug gauge, 65 - longitudinal small limit block, 66 - longitudinal large limit block. DETAILED DESCRIPTION

[0057] In order to better understand the technical content of the present application, specific embodiments are described below with reference to the accompanying drawings.

[0058] Aspects of the present application are described in this detailed description and illustrated in the accompanying drawings by various illustrative embodiments. Embodiments of the present application are not limited to the illustrations described in the drawings. It should be understood that the present application is implemented by any one of the above-mentioned concepts and embodiments, as well as the concepts and embodiments described in detail below, because the concepts and embodiments disclosed by the present application are not limited to any embodiment. In addition, some aspects disclosed by the present application can be used alone or in any appropriate combination with other aspects disclosed by the present application.

[0059] Reference Figures 1 to 9 The embodiments of the present application provide a curing device for the thickness and compression force of the adhesive layer of the lap joint, comprising: a locking device, a moving and rotating device, a pressure control device, a positioning device, and a temperature control device.

[0060] Among them,

[0061] The locking device comprises a shearing locking device and a tensile locking device, and the shearing sample and the tensile sample are locked by means of the cooperation of the lifting and lowering mechanism, the gear rack or the ball screw;

[0062] The moving and rotating device comprises a rotating device and a moving device, and is used for realizing the multi-directional adjustment of the sample;

[0063] The pressure control device realizes the pressure control by means of the cooperation of the force measuring function and the pressure control function and the locking device;

[0064] The positioning device comprises a shearing positioning device and a tensile positioning device, and the sample is positioned by means of the cooperation of the positioning tool, the plug gauge and the pin;

[0065] The temperature control device shortens the curing time of the glue layer by means of the closed-loop control.

[0066] As a preferred embodiment of the present application, the shearing locking device comprises a crank 1, a fine-threaded screw 2, a handle screw 3, a first fastening screw 4, a first flange 5, a gantry 6, a second flange 7, a second fastening screw 8 and a large base plate 35.

[0067] The fine-threaded screw 2 is connected to the gantry 6 through the first fastening screw 4 and the first flange 5, the gantry 6 is connected to the large base plate 35, the crank 1 is connected to the fine-threaded screw 2 through the locking screw 34, the second flange 7 is connected to the lower end of the fine-threaded screw 2 through the second fastening screw 8, the crank 1 is rotated to drive the fine-threaded screw 2 to realize the lifting or lowering, and when the up-down position is determined, the handle screw 3 is tightened to lock the fine-threaded screw 2.

[0068] The tensile locking device comprises a fastening nut 50, a cross beam 51, a coarse screw 52 and a small base plate 54, the cross beam 51 and the coarse screw 52 are connected to the small base plate 54 through the fastening nut 50, and the threaded connection mode in the embodiment can be connected in other modes such as the latch or the expansion connection.

[0069] The horizontal moving module handle 37 or the vertical moving module handle 40 is twisted clockwise or counterclockwise to realize the horizontal or vertical position adjustment.

[0070] As a preferred embodiment of the present application, the rotating device comprises a third fastening screw 9, a fifth silica rubber gasket 10, a rotating module 11, a first silica rubber gasket 12, a rotating module handle 13, a square force transmission member 14 and a fourth fastening screw 15.

[0071] The upper end of the rotating module 11 is connected with the second flange 7 through the fifth silicone rubber gasket 10 and the third fastening screw 9, and the lower end of the rotating module 11 is connected with the square force transmitting piece 14 through the silicone rubber gasket 12 and the fourth fastening screw 15; when the angle is adjusted, the rotating module handle 13 is twisted clockwise or counterclockwise to realize the angle adjustment of the sample position.

[0072] The mobile device comprises: a transverse moving module 23, a longitudinal moving module 24, a second locking screw 36, a transverse handle 37, a longitudinal handle 40, a third locking screw 42.

[0073] The second locking screw 36 and the third locking screw 42 are connected on the transverse moving module 23 and the longitudinal moving module 24 through threads, the transverse moving module 23 and the longitudinal moving module 24 are fixed on the large bottom plate 35 of the shearing locking device and the small bottom plate 54 of the stretching locking device, the transverse moving module handle 37 or the longitudinal moving module handle 40 is twisted clockwise or counterclockwise to realize the transverse or longitudinal position adjustment. The thread connection mode in the embodiment can be connected in other ways such as a latch or expansion connection, and the moving and rotating structure mode in the embodiment can also be connected in other ways such as a worm gear, a gear and a rack or a ball screw, the thread connection mode in the embodiment can be connected in other ways such as a latch or expansion connection, and the silicone rubber gasket in the embodiment can also be connected in other ways such as a flexible graphite gasket, a polytetrafluoroethylene gasket or a butyronitrile rubber.

[0074] As a preferred embodiment of the present application, the pressure control device comprises a second silicone rubber gasket 16, a force gauge 17, a third silicone rubber gasket 18, a fifth fastening screw 19, a force transmitting piece 20, a fourth silicone rubber gasket 21, a pressure controller 26 and an insulating quick-release protective box.

[0075] The upper end of the force gauge 17 is connected with the square force transmitting piece 14 through the second silicone rubber gasket 16 and the fourth fastening screw 15, and the lower end of the force gauge 17 is connected with the force transmitting piece 20 through the third silicone rubber gasket 18 and the fifth fastening screw 19, the end of the force transmitting piece 20 is attached with the fourth silicone rubber gasket 21, the third silicone rubber gasket 18 is used to ensure the uniformity of force transmission, the force gauge 17 is connected with the pressure controller 26, and the pressure controller 26 is installed in the insulating quick-release protective box.

[0076] The insulating quick-release protective box comprises: a foot pad 27, a plastic insulating sliding cover 30, a plastic insulating shell 31, a ferrous connecting piece 32 and a magnetic connecting piece 33.

[0077] The insulation type quick release protection box adopts a magnetic quick release structure, the plastic insulation shell 31 is a square hollow structure with openings at the top and front two ends, the foot pad 27 is connected to the bottom of the plastic insulation shell 31, the plastic insulation sliding cover 30 is matched with the top of the plastic insulation shell 31 through a concave-convex fitting structure, and the front and rear quick release is realized, the ferrous connecting piece 32 is connected to the front opening end of the plastic insulation sliding cover 30, one end of the magnetic connecting piece 33 is connected to the force gauge 17, and the other end is connected to the ferrous connecting piece 32 in a magnetic attraction mode. The magnetic connection can ensure convenient installation and removal, and effectively avoid the problem that the original distribution box has exposed wires and lacks isolation safety protection.

[0078] When the upper end of the force gauge 17 has pressure transmission, the force gauge 17 transmits the force through the force transmitting piece 20, and the pressure controller 26 detects and calculates the applied compressive stress and the pressing force acting on the sample, and the calculation relationship between the compressive stress and the pressing force is as follows:

[0079] σ=F / S

[0080] In the formula, σ is the compressive stress, F is the pressure value displayed by the pressure controller 26, and S is the area of the circular part at the lower end of the force transmitting piece 20.

[0081] The threaded connection mode in the embodiment can be connected in other modes such as a latch or expansion connection, the silicone rubber gasket in the embodiment can also be other flexible gaskets such as a flexible graphite gasket, a polytetrafluoroethylene gasket or a butyronitrile rubber, and the protection box in the embodiment can also be made of other insulating materials such as acrylic, epoxy resin or rubber.

[0082] As a preferred embodiment of the present application, the shear positioning device comprises a shear positioning tool 22, a first transverse plug gauge 38, a first longitudinal plug gauge 39, a first shear sample 41, a second shear sample 45, a transverse large limiting block 46, a sixth fastening screw 47, a transverse small limiting block 48 and a seventh fastening screw 49.

[0083] The shear positioning tool 22 is connected to the transverse large limiting block 46 and the transverse small limiting block 48 through the sixth fastening screw 47, the first transverse plug gauge 38 and the first longitudinal plug gauge 39 are placed in the positioning groove of the shear positioning tool 22, the shear sample 41 and the shear sample 45 coated with the adhesive are placed on the shear positioning tool 22, and the thickness and length of the adhesive layer are adjusted through the first transverse plug gauge 38 and the first longitudinal plug gauge 39. The thickness of the shear sample adhesive layer can be adjusted in the range of 0-10 mm, and the length of the shear sample adhesive layer can be adjusted in the range of 0-15 mm.

[0084] The stretching positioning device comprises a stretching positioning tool 53, a first stretching sample 55, a second stretching sample 56, an eighth fastening screw 57, a handle screw 58, a ninth fastening screw 59, a pin 60, a second longitudinal plug gauge 61, a second transverse plug gauge 62, an L-shaped connecting piece 63, a height plug gauge 64, a longitudinal small limiting block 65, and a longitudinal large limiting block 66.

[0085] The stretching positioning tool 53 is connected with the longitudinal small limiting block 65 and the longitudinal large limiting block 66 through the eighth fastening screw 57, the stretching positioning tool 53 is connected with the transverse moving module 23 through the ninth fastening screw 59 and the L-shaped connecting piece 63, the pin 60, the second longitudinal plug gauge 61, the second transverse plug gauge 62, and the height plug gauge 64 are placed in the pin hole and the positioning groove of the stretching positioning tool 53, the handle screw 58 is threadedly connected on the stretching positioning tool 53 to constrain the position of the second longitudinal plug gauge 61, and the stretching sample 55 and the stretching sample 56 coated with the adhesive are placed on the stretching positioning tool 53, and the thickness and the length of the stretching sample are adjusted through the second longitudinal plug gauge 61, the second transverse plug gauge 62, and the height plug gauge 64. The adjustable range of the thickness of the adhesive layer of the stretching sample is 0-13 mm, and the adjustable range of the length of the adhesive layer of the stretching sample is 0-25 mm. In the embodiment, the threaded connection mode can be connected in other modes such as a latch or an expansion connection, and the pin in the embodiment can be connected in other modes such as a screw, a bolt, a stud, or a metal rod.

[0086] The temperature control device comprises an infrared heating lamp 25, a temperature controller 28, a PID controller 29, a magnetic ring 43, and a temperature probe 44.

[0087] As shown in Figure 11 , the temperature controller 28 is used for setting a required temperature, the PID controller 29 collects an actual temperature value measured by the temperature probe 44, dynamic adjustment of the power of the infrared heating lamp 25 is realized through closed-loop control, the temperature of the adhesive layer area is ensured to be constant, and the curing of the adhesive layer is accelerated through the increase of the temperature during the curing process. For the epoxy resin adhesive, theoretically, the curing speed of the epoxy resin can be accelerated by about 50%-100% per 10℃ increase of the temperature, and the corresponding curing time can be shortened to 1 / 3-1 / 2 of the original time. The adjustable range of the temperature of the device is 10-100℃, and the optimal temperature interval is 70-100℃. The adhesive in the embodiment can also be other adhesives such as a polyurethane adhesive, an acrylic ester adhesive, and a phenolic resin adhesive.

[0088] As shown in Figure 10 , the application further provides a method for the thickness and the pressing force of the adhesive layer of a lap joint to be cooperatively regulated by a curing device, which comprises the following steps:

[0089] S1, according to the national standard, the required tensile test to be cured adhesive or shear test to be cured adhesive is prepared, wherein the rigid material is prepared according to GB / T 7124-2008 standard sample, the composite material is prepared according to GB / T 33334-2016 standard sample, after the sample preparation is completed, the surface treatment is carried out on the surface to be glued of the sample according to GB / T 21526-2008 standard;

[0090] S2, the required test adhesive is uniformly coated on the shear sample 41, shear sample 45 or tensile sample 55, tensile sample 56 surface to be glued according to GB / T 20740-2006;

[0091] S3, the shear sample 41, shear sample 45 or tensile sample 55, tensile sample 56 coated with adhesive in step two is placed on the shear positioning tool 22 or tensile positioning tool 53 of the positioning device, the thickness and length of the adhesive layer are adjusted by the transverse ruler 38, longitudinal ruler 39, longitudinal ruler 61, transverse ruler 62, height ruler 64, the thickness of the shear sample is 0.1-0.2mm, and the length is 10.5-12.5mm; the thickness of the tensile sample is 0.1-0.2mm, and the length is 23-25mm; m，

[0092] S4, the relative position of the first shear sample 41, the second shear sample 45 or the second tensile sample 55, the second tensile sample 56 and the end silicone rubber gasket of the force block 22 in the pressure control device is adjusted by moving the rotating device, and when the position is in contact and aligned, it is adjusted to the right position;

[0093] S5, rotate the handle 1 of the fastening device, when the pressure range of the pressure controller 26 is 60-140N, tighten the locking screw 34 of the fastening device, eliminate the gap between the screw thread, and ensure that the pressure is constant during the curing process;

[0094] S6, turn on the infrared heating lamp 25 of the temperature control device, set the curing temperature to 70-100℃, and wait for 1-2 hours after curing is completed,

[0095] S7, turn off the temperature control device and the pressure control device, reverse loosen the handle 1 of the fastening device, remove the first shear sample 41, the second shear sample 45 or the first tensile sample 55, the second tensile sample 56, and then carry out the subsequent tensile or shear adhesive performance test.

[0096] Although the present application has been described as above with reference to the preferred embodiments, it is not intended to limit the present application. Those skilled in the art can make various modifications and improvements without departing from the spirit and scope of the present application. Therefore, the protection scope of the present application shall be subject to the scope defined by the claims.​

Claims

1. A curing device for coordinating the control of adhesive layer thickness and clamping force in overlapping parts, characterized in that, include: Locking device, moving and rotating device, pressure control device, positioning device, temperature control device; in, The locking device includes a shearing locking device and a tension locking device, which use a lifting and lowering mechanism to lock the sheared sample and the tension sample. The movable rotation device includes a rotation device and a moving device, used to achieve multi-directional adjustment of the sample; The pressure control device achieves pressure regulation through force measurement and pressure control functions in conjunction with the locking device; The positioning device includes a shearing positioning device and a tension positioning device. It uses positioning fixtures in conjunction with feeler gauges and pins to achieve sample positioning. Temperature control device, through closed-loop control, shortens the curing time of the adhesive layer.

2. The curing device for coordinating the control of adhesive layer thickness and clamping force of overlapping parts according to claim 1, characterized in that, The shearing locking device includes: a crank handle (1), a fine thread screw (2), a handle screw (3), a first fastening screw (4), a first flange (5), a gantry frame (6), a second flange (7), a second fastening screw (8), a large base plate (35), and a first locking screw (34). The fine thread screw (2) and the first flange (5) are connected to the gantry (6) by the first fastening screw (4). The gantry (6) is connected to the base plate (35). The crank handle (1) is connected to the fine thread screw (2) by the first locking screw (34). The second flange (7) is connected to the lower end of the fine thread screw (2) by the second fastening screw (8). Turning the crank handle (1) drives the fine thread screw (2) to rise or fall. When the upper and lower positions are determined, tighten the handle screw (3) to lock the fine thread screw (2). The tension locking device includes: a fastening nut (50), a crossbeam (51), a coarse screw (52), and a small base plate (54); the crossbeam (51) and the coarse screw (52) are connected to the small base plate (54) by the fastening nut (50).

3. The curing device for coordinating the control of adhesive layer thickness and clamping force of overlapping parts according to claim 1, characterized in that, The rotating device includes: a third fastening screw (9), a fifth silicone rubber gasket (10), a rotating module (11), a first silicone rubber gasket (12), a rotating module handle (13), a square force transmission component (14), and a fourth fastening screw (5); The upper end of the rotating module (11) is connected to the flange (7) through the fifth silicone rubber gasket (10) and the third fastening screw (9), and the lower end of the rotating module (11) is connected to the square force transmission component (14) through the silicone rubber gasket (12) and the fourth fastening screw (15). When adjusting the angle, the angle of the sample position is adjusted by turning the rotating module handle (13) clockwise or counterclockwise. The moving device includes: a lateral moving module (23), a longitudinal moving module (24), a second locking screw (36), a lateral throttle (37), a longitudinal throttle (40), and a third locking screw (42); The second locking screw (36) and the third locking screw (42) are threadedly connected to the lateral moving module (23) and the longitudinal moving module (24). The lateral moving module (23) and the longitudinal moving module (24) are fixed on the large base plate (35) of the shearing locking device and the small base plate (54) of the tension locking device. The lateral or longitudinal position can be adjusted by turning the lateral moving module handle 37 or the longitudinal moving module handle 40 clockwise or counterclockwise.

4. The curing device for coordinating the control of adhesive layer thickness and clamping force of overlapping parts according to claim 1, characterized in that, The pressure control device includes a second silicone rubber gasket (16), a force gauge (17), a third silicone rubber gasket (18), a fifth fastening screw (19), a force transmission component (20), a fourth silicone rubber gasket (21), a pressure controller (26), and an insulated quick-release protection box. The upper end of the force gauge (17) is connected to the square force transmission component (14) through the second silicone rubber gasket (16) and the fourth fastening screw (15). The lower end of the force gauge (17) is connected to the force transmission component (20) through the third silicone rubber gasket (18) and the fifth fastening screw (19). The end of the force transmission component (20) is covered with the fourth silicone rubber gasket (21). The third silicone rubber gasket (18) is used to ensure the uniformity of force transmission. The force gauge (17) is connected to the pressure controller (26). The pressure controller (26) is installed inside the insulated quick-release protective box.

5. A curing device for coordinating the control of adhesive layer thickness and clamping force in overlapping parts according to claim 4, characterized in that, The insulated quick-release protective box includes: foot pads (27), plastic insulated sliding cover (30), plastic insulated shell (31), ferroelectric connector (32), and magnetic connector (33); The insulated quick-release protective box adopts a magnetic quick-release structure. The plastic insulating shell (31) is a square hollow structure with openings at the top and front ends. The foot pad (27) is connected to the bottom of the plastic insulating shell (31). The plastic insulating sliding cover (30) is connected to the top of the plastic insulating shell (31) through a concave-convex interlocking structure to achieve quick disassembly from front to back. The ferroelectric connector (32) is connected to the front opening end of the plastic insulating sliding cover (30). One end of the magnetic connector (33) is connected to the force gauge (17), and the other end is connected to the ferroelectric connector (32) in a magnetic manner.

6. A curing device for coordinating the control of adhesive layer thickness and clamping force in overlapping parts according to claim 5, characterized in that, When there is pressure transmission at the upper end of the force gauge (17), the force gauge (17) transmits the force through the force transmission component (20). At the same time, the pressure controller (26) detects and calculates the applied compressive stress and the clamping force acting on the sample. The calculation relationship between the compressive stress and the clamping force is as follows: σ=F / S In the formula, σ is the compressive stress, F is the pressure value displayed by the pressure controller (26), and S is the area of ​​the circular part at the lower end of the force transmission component (20).

7. The curing device for coordinating the control of adhesive layer thickness and clamping force of overlapping parts according to claim 1, characterized in that, The shearing positioning device includes: a shearing positioning fixture (22), a first transverse feeler gauge (38), a first longitudinal feeler gauge (39), a first shearing sample (41), a second shearing sample (45), a transverse large limit block (46), a sixth fastening screw (47), a transverse small limit block (48), and a seventh fastening screw (49). The shearing positioning fixture (22) is connected to the transverse large limit block (46) and the transverse small limit block (48) by the sixth fastening screw (47). The first transverse feeler gauge (38) and the first longitudinal feeler gauge (39) are placed in the positioning groove of the shearing positioning fixture (22). The first shearing sample (41) and the second shearing sample (45) after being coated with adhesive are placed on the shearing positioning fixture (22). The thickness and length of the adhesive layer are adjusted by the first transverse feeler gauge (38) and the first longitudinal feeler gauge (39).

8. The curing device for coordinating the control of adhesive layer thickness and clamping force of overlapping parts according to claim 1, characterized in that, The stretching positioning device includes: stretching positioning fixture (53), first stretching sample (55), second stretching sample (56), eighth fastening screw (57), handle screw (58), ninth fastening screw (59), pin (60), second longitudinal feeler gauge (61), second transverse feeler gauge (62), L-shaped connector (63), height feeler gauge (64), longitudinal small limit block (65), and longitudinal large limit block (66); The stretch positioning fixture (53) is connected to the longitudinal small limit block (65) and the longitudinal large limit block (66) by the eighth fastening screw (57). The stretch positioning fixture (53) is connected to the transverse moving module (23) by the ninth fastening screw (59) and the L-shaped connector (63). The pin (60), the second longitudinal feeler gauge (61), the second transverse feeler gauge (2), and the height feeler gauge (64) are placed in the pin hole and positioning groove of the stretch positioning fixture (53). The handle screw (58) is threaded onto the stretch positioning fixture (53) to constrain the position of the second longitudinal feeler gauge (61). The first stretch sample (55) and the second stretch sample (56) coated with adhesive are placed on the stretch positioning fixture (53). The thickness and length of the stretch sample are adjusted by the second longitudinal feeler gauge (61), the second transverse feeler gauge (62), and the height feeler gauge (64).

9. A curing device for coordinating the control of adhesive layer thickness and clamping force in overlapping parts according to claim 1, characterized in that, The temperature control device includes an infrared heating lamp (25), a temperature controller (28), a PID controller (29), a magnetic ring (43), and a temperature probe (44); The temperature controller (28) is used to set the required temperature. The PID controller (29) collects the actual temperature value measured by the temperature probe (44) and realizes the dynamic adjustment of the power of the infrared heating lamp (25) through closed-loop control to ensure the constant temperature of the adhesive layer area. During the curing process, the adhesive layer is accelerated by increasing the temperature.

10. A method for a curing apparatus for coordinating the control of adhesive layer thickness and clamping force in overlapping joints, characterized in that, Includes the following steps: S1. Prepare the required tensile test or shear test adhesive parts according to national standards. S2. Apply the adhesive to be tested evenly to the bonding surface of the sheared or stretched sample. S3. Place the sheared or stretched sample coated with adhesive in step S2 onto the shearing or stretching positioning fixture of the positioning device, and adjust the thickness and length of the adhesive layer using the various transverse feeler gauges, longitudinal feeler gauges, and height feeler gauges. S4. Adjust the relative position of the shearing sample or tensile sample and the silicone rubber gasket at the end of the force transmission block in the pressure control device by moving the rotating device. When the positions are in contact and aligned, the adjustment is complete. S5. Rotate the handle of the fastening device. When the pressure of the pressure controller is within the preset range, tighten the first locking screw 34 of the fastening device to eliminate the screw pitch gap and ensure that the pressure remains constant during the curing process. S6. Turn on the infrared heating lamp (25) of the temperature control device, set the curing temperature, and wait for the preset time to complete the curing process; S7. Turn off the temperature control device and the pressure control device, loosen the crank handle (1) of the fastening device in the opposite direction, remove the shear sample or tensile sample, and then carry out the subsequent tensile or shear bonding mechanical property test.

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