A hot melt adhesive performance detection device and method

Abstract

The present application relates to hot melt adhesive performance detection technical field, specifically disclose a kind of hot melt adhesive performance detection device and method, hot melt adhesive performance detection device includes bonding sample subassembly, stretching subassembly, locking subassembly, rotating subassembly and side push subassembly, bonding sample subassembly includes two bonding sample plates;Stretching subassembly is used to give two bonding sample plates mutually pressing force and mutually away tensile force of pressing;Locking subassembly is used to lock and release one of bonding sample plate;Rotating subassembly is used to give another bonding sample plate torsion along circumferential rotation, and drive two bonding sample plates to rotate together;Side push subassembly is used to when one of bonding sample plate is locked by locking subassembly, give another bonding sample plate lateral force along second direction movement.The present application can detect the longitudinal bonding strength, lateral bonding strength and circumferential bonding strength of hot melt adhesive, effectively simulate different actual use scenarios of hot melt adhesive, improve the accuracy of detection.

Description

Technical Field

[0001] This invention relates to the field of hot melt adhesive performance testing technology, and in particular to a hot melt adhesive performance testing device and method. Background Technology

[0002] Hot melt adhesive is a 100% solid, fusible polymer that requires no solvent and contains no water. It is solid at room temperature and melts into a flowable, viscous liquid when heated to a certain temperature. During the manufacturing process of hot melt adhesives, their performance needs to be tested, especially their adhesive strength. Currently, some automated testing devices for hot melt adhesive adhesive strength exist on the market. However, these devices can only measure the longitudinal tension to detect the tensile force after bonding. After hot melt adhesive bonds two objects, in different usage scenarios, the two objects will experience not only tensile forces moving away from each other, but also lateral tangential forces moving to different sides and circumferential tangential forces rotating to different directions. Existing testing devices can only detect the longitudinal adhesive strength, but cannot detect the lateral and circumferential adhesive strength, making it difficult to simulate different actual usage scenarios and resulting in low accuracy. Summary of the Invention

[0003] The purpose of this invention is to provide a device and method for testing the performance of hot melt adhesives, so as to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0004] The technical solution adopted to solve the above-mentioned technical problems is as follows:

[0005] This invention provides a hot melt adhesive performance testing device, comprising:

[0006] The adhesive sample assembly includes two adhesive sample plates that are stacked together along a first direction, and the overlapping surfaces of the two adhesive sample plates are bonded together by the hot melt adhesive to be tested.

[0007] A tensioning assembly is drivenly connected to the two adhesive sample plates, the tensioning assembly being used to apply a pressing force that presses the two adhesive sample plates together along the first direction and a tensile force that moves them away from each other along the first direction.

[0008] A locking assembly for locking and releasing one of the adhesive sample plates;

[0009] A rotating assembly is in driving connection with the other bonding sample plate, and is used to apply a circumferential rotating torsion to the other bonding sample plate when one of the bonding sample plates is locked by the locking assembly, and is used to rotate the two bonding sample plates together when one of the bonding sample plates is released by the locking assembly;

[0010] A side pushing assembly is in driving connection with the other bonding sample plate, and is used to apply a lateral force in a second direction to the other bonding sample plate when one of the bonding sample plates is locked by the locking assembly, wherein the second direction is perpendicular to the first direction.

[0011] The hot melt adhesive performance detection device has the following advantages:

[0012] When the longitudinal bonding strength of the hot melt adhesive needs to be detected, the two bonding sample plates are applied with a mutual moving away tensile force by the stretching assembly; when the circumferential bonding strength of the hot melt adhesive needs to be detected, one of the bonding sample plates is locked by the locking assembly, and then a circumferential rotating torsion is applied to the other bonding sample plate by the rotating assembly; when the lateral bonding strength of the hot melt adhesive needs to be detected, one of the bonding sample plates is locked by the locking assembly, and then a lateral force is applied to the other bonding sample plate by the side pushing assembly; and during the detection of the lateral bonding strength, the bonding sample plates are released by the locking assembly, and then the two bonding sample plates are rotated to different positions by the rotating assembly, and then the bonding sample plates are locked again, and the lateral force applied to the other bonding sample plate by the side pushing assembly is controlled to control the relative movement of the two bonding sample plates in different lateral directions, so that the lateral bonding strength of different positions of the two bonding sample plates in the circumferential direction can be detected. The longitudinal bonding strength, the lateral bonding strength and the circumferential bonding strength of the hot melt adhesive can be detected, the different actual use scenarios of the hot melt adhesive can be effectively simulated, and the detection accuracy is improved.

[0013] As a further improvement of the above technical solution, the stretching assembly comprises a first mounting seat, a second mounting seat and a stretching driving mechanism, the first mounting seat and the second mounting seat are arranged opposite to each other along the first direction, and the two bonding sample plates are respectively detachably mounted on the opposite surfaces of the first mounting seat and the second mounting seat.

[0014] The stretching driving mechanism is in driving connection with the first mounting seat, and is used to drive the first mounting seat to move along the first direction.

[0015] The locking assembly is used to lock the position of the first mounting seat along the second direction and the position of the first mounting seat rotating around the central axis extending along the first direction.

[0016] The rotating assembly is in transmission connection with the second mounting base, and is used to drive the second mounting base to rotate around a central axis extending along the first direction;

[0017] The side pushing assembly is in transmission connection with the second mounting base, and is used to drive the second mounting base to move along the second direction.

[0018] As a further improvement of the above technical solution, the side pushing assembly comprises a side pushing sliding base and a side pushing driving mechanism used to drive the side pushing sliding base to move along the second direction.

[0019] The second mounting base and the rotating assembly are mounted on the side pushing sliding base.

[0020] As a further improvement of the above technical solution, the second mounting base is rotatably fixed on the top of the side pushing sliding base, and the rotating assembly comprises a gear ring fixedly sleeved on the outer periphery of the second mounting base, a driving gear in meshing connection with the gear ring, and a rotating driving member used to drive the driving gear to rotate.

[0021] As a further improvement of the above technical solution, the locking assembly comprises a first clamping part, a second clamping part and a locking driving member, the outer periphery of the first mounting base is circumferentially spaced with a plurality of first clamping parts, the locking driving member is in transmission connection with the second clamping part, and the locking driving member is used to drive the second clamping part to be clamped and abutted with the first clamping part along the radial direction, so as to lock the circumferential rotation and lateral movement of the first mounting base.

[0022] As a further improvement of the above technical solution, the locking driving member is slidably adjustable along the first direction.

[0023] As a further improvement of the above technical solution, the top surface of the first mounting base away from the second mounting base is provided with a connecting seat, and the connecting seat is slidably arranged along the radial direction.

[0024] The stretching driving mechanism has a driving telescopic end in transmission connection with the connecting seat, and the stretching assembly further comprises a transverse movement driving mechanism in transmission connection with the stretching driving mechanism, and the transverse movement driving mechanism is used to drive the stretching driving mechanism to move along the radial direction, so as to drive the connecting seat to move to the edge and the center of the first mounting base.

[0025] As a further improvement of the above technical solution, the opposite surfaces of the first mounting base and the second mounting base are circumferentially spaced with a plurality of mounting grooves, and the side wall of the mounting groove is provided with a locking through hole in communication with the outside.

[0026] The mutually opposite surfaces of the bonding sample plate are provided with a plurality of insertion fittings, the insertion fittings are inserted into the mounting slots one by one, the side wall of the insertion fitting is provided with a lock hole opposite to the lock through hole, and the lock pin is arranged between the lock hole and the lock through hole.

[0027] As a further improvement of the above technical solution, the first mounting seat and the second mounting seat are both embedded with heat exchange pipes.

[0028] In addition, the application also provides a hot melt adhesive performance detection method, which is suitable for the hot melt adhesive performance detection device, and the hot melt adhesive performance detection method comprises the following steps of:

[0029] The hot melt adhesive to be detected is applied to the surface of at least one bonding sample plate;

[0030] The two bonding sample plates are pressed together according to a preset pressing force, and are cooled and solidified;

[0031] When the longitudinal bonding strength of the hot melt adhesive is detected, the two bonding sample plates are controlled to move away from each other according to a preset pulling force;

[0032] When the circumferential bonding strength of the hot melt adhesive is detected, one of the bonding sample plates is controlled to be locked, and the other bonding sample plate is controlled to rotate circumferentially according to a preset torsion force;

[0033] When the lateral bonding strength of the hot melt adhesive is detected, the two bonding sample plates are controlled to rotate to different lateral detection positions, in each lateral detection position, one of the bonding sample plates is controlled to be locked, and the other bonding sample plate is controlled to move laterally according to a preset lateral force.

[0034] Other features and advantages of the present application will be described in the following description, and some will become apparent from the description, or will be understood through implementation of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0035] The present application will be further described below in combination with the drawings and examples;

[0036] Figure 1 is a schematic view of an embodiment of the hot melt adhesive performance detection device provided by the present application for detecting the lateral bonding strength of the hot melt adhesive;

[0037] Figure 2 is Figure 1 is a partial enlarged view of part A in FIG. 8;

[0038] Figure 3 is a schematic view of an embodiment of the hot melt adhesive performance detection device provided by the present application for detecting the longitudinal bonding strength of the hot melt adhesive by stretching from the center of the bonding sample assembly;

[0039] Figure 4 is a schematic view of an embodiment of the hot melt adhesive performance detection device provided by the present application detecting the circumferential bonding strength of hot melt adhesive;

[0040] Figure 5 is a top view of an embodiment of the first mounting seat provided by the present application;

[0041] Figure 6 is a schematic view of an embodiment of the hot melt adhesive performance detection device provided by the present application detecting the longitudinal bonding strength of hot melt adhesive by stretching from the edge of the bonding sample assembly;

[0042] Figure 7 is a flow chart of an embodiment of the hot melt adhesive performance detection method provided by the present application;

[0043] Reference Signs:

[0044] bonding sample assembly 100; bonding sample plate 110; plug-in part 111; lock hole 112;

[0045] stretching assembly 200; first mounting seat 210; connecting seat 211; sliding groove 212; second mounting seat 220; stretching drive mechanism 230; drive telescopic end 231; transverse movement drive mechanism 240; moving seat 241; transverse movement drive member 242; mounting groove 250; lock through hole 251; lock pin 260; heat exchange pipe 270;

[0046] locking assembly 300; first clamping part 310; second clamping part 320; locking drive member 330;

[0047] rotating assembly 400; gear ring 410; drive gear 420; rotating drive member 430;

[0048] side pushing assembly 500; side pushing sliding seat 510; connecting shaft 511; side pushing drive mechanism 520;

[0049] frame 600. DETAILED DESCRIPTION

[0050] The embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0051] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, etc., is based on the orientation or position relationship shown in the drawings, only for the purpose of facilitating the description of the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0052] In the description of the present application, more than two refers to more than two. If there is a description of the first, second, only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0053] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installation, connection, etc. should be broadly understood, and those skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0054] The technical solutions of the present application will be described below in conjunction with the drawings. Obviously, the following described embodiments are part of the embodiments of the present application, not all embodiments.

[0055] The existing hot melt adhesive bonds two objects, and in different use scenarios, there will be not only a relative pulling force between the two objects, but also a lateral tangential force relative to different sides and a circumferential tangential force relative to different circumferences. The existing test device cannot simultaneously detect the longitudinal bonding strength, lateral bonding strength and circumferential bonding strength of the hot melt adhesive, it is difficult to simulate different actual use scenarios of the hot melt adhesive, and the detection accuracy is low. Therefore, the present application proposes a hot melt adhesive performance detection device to solve the above problems.

[0056] Referring to Figures 1-6 The hot melt adhesive performance detection device of the present application is as follows:

[0057] As Figure 1 shown, the hot melt adhesive performance detection device of the present application embodiment comprises a bonding sample assembly 100, a stretching assembly 200, a locking assembly 300, a rotating assembly 400 and a side pushing assembly 500.

[0058] Among them, as Figure 1 and Figure 2 shown, the bonding sample assembly 100 of the present application comprises two bonding sample plates 110. In detection, according to different use scenarios, bonding sample plates 110 of corresponding material and size are selected. The bonding sample plate 110 can be a metal plate or a plastic plate, and the shape of the bonding sample plate 110 can be circular, rectangular or other special-shaped structure.

[0059] The two adhesive sample plates 110 are arranged in a superimposed manner along the up-down direction, and in other embodiments, the two adhesive sample plates 110 can be arranged in a superimposed manner along other directions, and the surfaces of the two adhesive sample plates 110 superimposed with each other are adhered to each other by the hot melt adhesive to be tested.

[0060] The stretching assembly 200 of the embodiment is in driving connection with the two adhesive sample plates 110, and the stretching assembly 200 is used to apply a pressing force along the up-down direction to press the two adhesive sample plates 110 to each other and a pulling force along the up-down direction to pull the two adhesive sample plates 110 away from each other.

[0061] As shown in Figure 1 and Figure 3 The locking assembly 300 of the application is used to lock and release one of the two adhesive sample plates 110, and the adhesive sample plate 110 in the locked state cannot rotate freely along the circumferential direction and cannot move along the horizontal transverse direction.

[0062] As shown in Figure 4 The rotating assembly 400 of the application is in driving connection with the other adhesive sample plate 110, and the rotating assembly 400 is used to apply a torsion along the circumferential direction to the other adhesive sample plate 110 when one of the two adhesive sample plates 110 is locked by the locking assembly 300, and to rotate the two adhesive sample plates 110 together when one of the two adhesive sample plates 110 is released by the locking assembly 300.

[0063] As shown in Figure 1 The side pushing assembly 500 of the application is in driving connection with the other adhesive sample plate 110, and the side pushing assembly 500 is used to apply a lateral force along the horizontal transverse direction to the other adhesive sample plate 110 when one of the two adhesive sample plates 110 is locked by the locking assembly 300.

[0064] As shown in Figure 3 When the longitudinal adhesive strength of the hot melt adhesive needs to be detected, the stretching assembly 200 is used to apply a pulling force to pull the two adhesive sample plates 110 away from each other; as shown in Figure 4 When the circumferential adhesive strength of the hot melt adhesive needs to be detected, one of the two adhesive sample plates 110 is locked by the locking assembly 300, and then the rotating assembly 400 is used to apply a torsion along the circumferential direction to the other adhesive sample plate 110; as shown in Figure 1As shown, when the lateral bonding strength of the hot melt adhesive needs to be detected, one of the bonding sample plates 110 is locked by the locking assembly 300, and then the lateral force is applied to the other bonding sample plate 110 by the side pushing assembly 500, and during the detection of the lateral bonding strength, the bonding sample plate 110 is released by the locking assembly 300, at this time, the two bonding sample plates 110 are rotated to different positions by the rotating assembly 400, and then the bonding sample plate 110 is locked, and the lateral force is applied to the other bonding sample plate 110 by the side pushing assembly 500 to control the different lateral relative movement between the two bonding sample plates 110, so that the lateral bonding strength detection can be performed at different positions along the circumference between the two bonding sample plates 110. The longitudinal bonding strength, lateral bonding strength and circumferential bonding strength of the hot melt adhesive can be detected, the different actual use scenarios of the hot melt adhesive can be effectively simulated, and the detection accuracy is improved.

[0065] Further, as shown in the drawings, Figure 1 The stretching assembly 200 of the embodiment includes a first mounting seat 210, a second mounting seat 220 and a stretching driving mechanism 230. The first mounting seat 210 and the second mounting seat 220 are arranged in an up-down direction. The two bonding sample plates 110 are respectively detachably mounted on the opposite surfaces of the first mounting seat 210 and the second mounting seat 220. After each detection, the two bonding sample plates 110 can be detached from the first mounting seat 210 and the second mounting seat 220, and new bonding sample plates 110 can be replaced for the next detection.

[0066] The stretching driving mechanism 230 of the embodiment is in transmission connection with the first mounting seat 210. The stretching driving mechanism 230 and the first mounting seat 210 can freely rotate and do not interfere with the rotating movement of the first mounting seat 210. The stretching driving mechanism 230 is used to drive the first mounting seat 210 to move along the up-down direction to approach and move away from the second mounting seat 220, so as to drive the two bonding sample plates 110 to approach and move away from each other along the up-down direction.

[0067] The locking assembly 300 of the embodiment is used to lock the position of the first mounting seat 210 along the front-back direction and the position of the first mounting seat 210 rotating around the central axis extending along the up-down direction, so as to lock the bonding sample plate 110 mounted on the first mounting seat 210.

[0068] The rotating assembly 400 of the embodiment is in transmission connection with the second mounting base 220, and is used to drive the second mounting base 220 to rotate around the central axis. When the first mounting base 210 is in the loosening state, the second mounting base 220 is driven to rotate together with the first mounting base 210 under the bonding of the hot melt adhesive, so as to drive the two bonding sample plates 110 to rotate together. When the first mounting base 210 is in the locking state, the second mounting base 220 is driven to rotate relative to the first mounting base 210, so as to drive the two bonding sample plates 110 to rotate relative to each other.

[0069] When the circumferential bonding strength of the hot melt adhesive is detected, the second mounting base 220 is driven to rotate in different directions, so as to simulate that the hot melt adhesive is subjected to circumferential tangential forces in two rotation directions.

[0070] As shown in Figure 1 , the side pushing assembly 500 of the embodiment is in transmission connection with the second mounting base 220, and is used to drive the second mounting base 220 to move in the front-rear direction, so as to drive the two bonding sample plates 110 to move relative to each other in the front-rear direction.

[0071] Specifically, the side pushing assembly 500 of the embodiment includes a side pushing sliding seat 510 and a side pushing driving mechanism 520 used to drive the side pushing sliding seat 510 to move in the front-rear direction. The side pushing sliding seat 510 is slidingly installed on the rack 600 in the front-rear direction. The side pushing driving mechanism 520 of the embodiment adopts a linear driving structure such as an electric push rod, a hydraulic cylinder or an air cylinder.

[0072] The second mounting base 220 and the rotating assembly 400 of the embodiment are installed on the side pushing sliding seat 510.

[0073] Specifically, the second mounting base 220 of the embodiment is rotatably fixed to the top of the side pushing sliding seat 510, and is in rotation connection with the side pushing sliding seat 510 through a connecting shaft 511.

[0074] As shown in Figure 1 , the rotating assembly 400 includes a gear ring 410 fixedly sleeved on the outer periphery of the second mounting base 220, a driving gear 420 in meshing connection with the gear ring 410, and a rotating driving member 430 used to drive the driving gear 420 to rotate. The rotating driving member 430 is a servo motor. The driving gear 420 is driven to rotate by the rotating driving member 430. Under the meshing connection between the driving gear 420 and the gear ring 410, the second mounting base 220 is driven to rotate on the side pushing sliding seat 510, so as to drive the bonding sample plate 110 installed on the second mounting base 220 to rotate.

[0075] As shown in Figure 1 and Figure 5As shown, the locking component 300 of this embodiment includes a first latching portion 310, a second latching portion 320, and a locking drive member 330. A plurality of first latching portions 310 are distributed circumferentially around the outer periphery of the first mounting base 210. The locking drive member 330 is connected to the second latching portion 320 in a transmission manner. The locking drive member 330 is used to drive the second latching portion 320 to engage and abut against the first latching portion 310 in a radial direction, so as to lock the circumferential rotation and lateral movement of the first mounting base 210.

[0076] like Figure 1 and 5 As shown, in this embodiment, the first engaging part 310 is a slot structure, and the second engaging part 320 is a snap-fit ​​structure that matches and engages with the slot structure. In this embodiment, the locking drive member 330 and the second engaging part 320 are located behind the first mounting base 210, while the side push drive mechanism 520 is located in front of the second mounting base 220. The side push drive mechanism 520 pushes the side push slide 510 backward to drive the second mounting base 220 to move backward, while the locking drive member 330 drives the second engaging part 320 to move forward and engage with the first engaging part 310. At this time, the force exerted by the second engaging part 320 on the first mounting base 210 is forward, thereby causing the first mounting base 210 and the second mounting base 220 to move relative to each other in the front-back direction.

[0077] When it is necessary to control the relative movement of the two adhesive sample plates 110 to different sides, it is only necessary to loosen the first mounting base 210 and rotate the first mounting base 210 and the second mounting base 220 together by a set angle to change the first locking part 310 that engages with the second locking part 320. This allows for lateral bonding strength testing of the two adhesive sample plates 110 in different sides to simulate the hot melt adhesive being subjected to different lateral tangential forces.

[0078] Furthermore, in this embodiment, the locking drive member 330 is slidably and adjustablely mounted on the frame 600 in the vertical direction, which can mainly adapt to the detection of hot melt adhesive layers of different thicknesses. When more hot melt adhesive is used, the thickness of the hot melt adhesive layer formed between the two adhesive sample plates 110 increases, and the distance between the two adhesive sample plates 110 also increases. At this time, by adjusting the vertical position of the locking drive member 330, the second locking part 320 and the first locking part 310 are opposite each other in the front-back direction.

[0079] The locking drive component 330 employs a linear drive structure such as an electric push rod, hydraulic cylinder, or pneumatic cylinder. The locking drive component 330 is mounted on the frame 600 via a slider that slides up and down, and the slider is equipped with a locking structure for securing its position.

[0080] Furthermore, such as Figure 1 and Figure 5As shown, the top surface of the first mounting base 210 opposite to the second mounting base 220 is provided with a connecting base 211 which is slidingly arranged along the radial direction of the first mounting base 210, and the stretching driving mechanism 230 has a driving telescopic end 231 rotationally connected to the connecting base 211. In this embodiment, the stretching driving mechanism 230 adopts a linear driving structure such as an electric push rod, a hydraulic cylinder or an air cylinder.

[0081] As shown in Figure 3 and Figure 6 In this embodiment, the stretching assembly 200 further comprises a transverse movement driving mechanism 240 which is drivingly connected to the stretching driving mechanism 230 and is used to drive the stretching driving mechanism 230 to move along the radial direction so as to drive the connecting base 211 to move to the edge or the center of the first mounting base 210.

[0082] As shown in Figure 3 When the longitudinal bonding strength of the hot melt adhesive is detected, the connecting base 211 can be moved to the center of the first mounting base 210, at this time, the stretching driving mechanism 230 drives the whole of the upper bonding test plate 110 to move up and down. Considering that in actual use, after two objects are bonded by the hot melt adhesive, they are often pulled from the edge, in order to simulate the scene of pulling from the edge, the longitudinal stretching is needed to be performed from the edge of the two bonding test plates 110. At this time, the first mounting base 210 is controlled to rotate to a set position, and as shown in Figure 6 the transverse movement driving mechanism 240 drives the stretching driving mechanism 230 to move along the radial direction so as to drive the connecting base 211 to move to the edge of the first mounting base 210, and then the stretching driving mechanism 230 drives the first mounting base 210 to move up from the edge of the first mounting base 210, so that the edge of the upper bonding test plate 110 can be stretched upwards.

[0083] As shown in Figure 2 In this embodiment, the top surface of the first mounting base 210 is provided with a sliding groove 212 extending along the radial direction, and the connecting base 211 is slidingly matched with the sliding groove 212. If it is needed to adjust the position of the connecting base 211, the first mounting base 210 is rotated to a state in which the sliding groove 212 extends along the front-rear direction, and the transverse movement driving mechanism 240 of this embodiment drives the stretching driving mechanism 230 to move forward and backward.

[0084] Specifically, the transverse movement driving mechanism 240 of this embodiment comprises a moving base 241 slidingly mounted on the rack 600 and a transverse movement driving member 242 which drives the moving base 241 to move forward and backward. The transverse movement driving member 242 adopts a linear driving structure such as an electric push rod, a hydraulic cylinder or an air cylinder.

[0085] Regarding the installation method of the adhesive sample plate 110, in this embodiment, the surfaces of the first mounting base 210 and the second mounting base 220 opposite each other are provided with a plurality of mounting grooves 250. The sidewall of the mounting groove 250 is provided with a locking through hole 251 communicating with the outside. The surfaces of the two adhesive sample plates 110 facing away from each other are provided with a plurality of plug-in parts 111. The plug-in parts 111 are inserted into the mounting grooves 250 one by one. The sidewall of the plug-in part 111 is provided with a locking hole 112 opposite to the locking through hole 251. A locking pin 260 is provided between the locking hole 112 and the locking through hole 251, wherein the locking pin 260 is a bolt.

[0086] When it is necessary to disassemble the adhesive sample plate 110, push all the locking pins 260 out of the locking hole 112, drive the first mounting base 210 upward, and remove the two adhesive sample plates 110.

[0087] like Figure 2 As shown, both the first mounting base 210 and the second mounting base 220 in this embodiment are equipped with heat exchange tubes 270. Depending on different needs, the heat exchange tubes 270 can heat and cool the bonded sample plate 110. The heat exchange tubes 270 are connected to a heat exchange system, through which the heat exchange medium is transported to the heat exchange tubes 270 for heat exchange, so as to control the hot melt adhesive to be tested under different temperature conditions, and can also improve the cooling and solidification speed of the hot melt adhesive to improve the efficiency of the test.

[0088] Furthermore, this invention also proposes a method for testing the performance of hot melt adhesives, applicable to the aforementioned hot melt adhesive performance testing device, such as... Figure 7 As shown, the methods for testing the performance of hot melt adhesives include:

[0089] Step S100: Apply the hot melt adhesive to be tested to the surface of at least one adhesive sample plate 110;

[0090] Step S200: Press the two bonded sample plates 110 together according to the preset pressing force and let them cool and solidify;

[0091] Step S300: When testing the longitudinal bonding strength of the hot melt adhesive, control the two bonding sample plates 110 to move away from each other according to the preset tension;

[0092] Step S400: When testing the circumferential bonding strength of the hot melt adhesive, control and lock one of the bonding sample plates 110, and control the other bonding sample plate 110 to rotate circumferentially according to the preset torque.

[0093] Step S500: When testing the lateral bonding strength of the hot melt adhesive, control the two bonding sample plates 110 to rotate to different lateral testing positions. In each lateral testing position, control and lock one of the bonding sample plates 110, and control the other bonding sample plate 110 to move laterally according to the preset lateral force.

[0094] In step S200, according to different detection requirements, the adhesive sample plates 110 of different materials are selected, and a certain amount of hot melt adhesive is applied to the surface of the adhesive sample plates 110. The surfaces of the two adhesive sample plates 110 can be applied, or the surface of one of the adhesive sample plates 110 can be applied.

[0095] In step S200, as shown in Figure 2 two adhesive sample plates 110 are respectively installed on the first mounting seat 210 and the second mounting seat 220, the plug-in part 111 is inserted into the mounting groove 250, and then the lock pin 260 is connected to the lock hole 112 and the locking through hole 251 to fix the adhesive sample plates 110. The first mounting seat 210 is driven downward by the stretching driving mechanism 230 to press the two adhesive sample plates 110 together. At this time, the heat exchange pipe 270 cools the hot melt adhesive to accelerate the solidification speed of the hot melt adhesive.

[0096] In step S300, as shown in Figure 3 and Figure 6 the first mounting seat 210 is driven upward by the stretching driving mechanism 230 to apply a preset tensile force to the two adhesive sample plates 110 to move away from each other. At the same time, whether the two adhesive sample plates 110 are separated or not is observed. If not, the longitudinal adhesive strength of the hot melt adhesive meets the requirements. In addition, the first mounting seat 210 is rotated to a set position, the stretching driving mechanism 230 is driven to move along the front and back directions by the horizontal moving driving mechanism 240 to drive the connecting seat 211 to move to the edge of the first mounting seat 210, and then the first mounting seat 210 is driven upward from the edge of the first mounting seat 210 by the stretching driving mechanism 230 to stretch the edge of the upper adhesive sample plate 110 upward. The adhesive strength of the hot melt adhesive at the edge between the two adhesive sample plates 110 is detected.

[0097] In step S400, as shown in Figure 4 the second clamping part 320 is driven to move along the front and back directions by the locking driving member 330, the second clamping part 320 is controlled to be clamped and abutted with the first clamping part 310 to lock the circumferential rotation and lateral movement of the first mounting seat 210, so as to lock the upper adhesive sample plate 110. The driving gear 420 is driven to rotate by the rotating driving member 430, and the second mounting seat 220 is driven to rotate on the side pushing sliding seat 510 under the meshing connection between the driving gear 420 and the gear ring 410, so as to drive the adhesive sample plate 110 mounted on the second mounting seat 220 to rotate and apply a preset torsion to the lower adhesive sample plate 110. At the same time, whether the two adhesive sample plates 110 are separated or not is observed. If not, the circumferential adhesive strength of the hot melt adhesive meets the requirements.

[0098] In step S500, as shown inFigure 1 As shown, the second clamping part 320 is controlled to separate from the first clamping part 310, and the second mounting base 220 is rotated on the side pushing sliding base 510, at this time, the first mounting base 210 rotates with the second mounting base 220, that is, the two adhesive sample plates 110 are controlled to rotate to different lateral detection positions, and the second clamping part 320 is controlled to abut with the first clamping part 310 to lock the circumferential rotation and lateral movement of the first mounting base 210, so as to lock the upper adhesive sample plate 110, the side pushing driving mechanism 520 pushes the side pushing sliding base 510 backward to drive the second mounting base 220 to move backward, at this time, the second clamping part 320 exerts a force on the first mounting base 210 forward, so that the first mounting base 210 and the second mounting base 220 move relative to each other in the front-back direction, so as to exert a preset lateral force on the lower adhesive sample plate 110 in the front-back direction, and whether the two adhesive sample plates 110 are separated is observed, if not, the lateral adhesive strength of the hot melt adhesive reaches the requirement.

[0099] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0100] The embodiments of the present application are described in detail above in combination with the drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the purpose of the present application.

Claims

1. A hot melt adhesive performance detection device, characterized in that, The hot melt adhesive performance detection device comprises: a bonding sample assembly comprising two bonding sample plates stacked along a first direction, the surfaces of the two bonding sample plates being bonded to each other by a hot melt adhesive to be tested; a stretching assembly in driving connection with the two bonding sample plates, the stretching assembly being configured to apply a pressing force to the two bonding sample plates to press the two bonding sample plates to each other along the first direction and a pulling force to the two bonding sample plates to move the two bonding sample plates away from each other along the first direction; a locking assembly configured to lock and release one of the bonding sample plates; a rotating assembly in driving connection with the other bonding sample plate, the rotating assembly being configured to apply a torsion to the other bonding sample plate to rotate the other bonding sample plate along a circumferential direction when the one bonding sample plate is locked by the locking assembly, and to rotate the two bonding sample plates together when the one bonding sample plate is released by the locking assembly; a side pushing assembly in driving connection with the other bonding sample plate, the side pushing assembly being configured to apply a side force to the other bonding sample plate to move the other bonding sample plate along a second direction perpendicular to the first direction when the one bonding sample plate is locked by the locking assembly; the stretching assembly comprises a first mounting seat, a second mounting seat and a stretching driving mechanism, the first mounting seat and the second mounting seat being oppositely arranged along the first direction, the two bonding sample plates being detachably mounted on the opposite surfaces of the first mounting seat and the second mounting seat; the stretching driving mechanism is in driving connection with the first mounting seat, the stretching driving mechanism being configured to move the first mounting seat along the first direction; the locking assembly is configured to lock the position of the first mounting seat along the second direction and the position of the first mounting seat rotating around a central axis extending along the first direction; the rotating assembly is in driving connection with the second mounting seat, the rotating assembly being configured to rotate the second mounting seat around the central axis extending along the first direction; the side pushing assembly is in driving connection with the second mounting seat, the side pushing assembly being configured to move the second mounting seat along the second direction; the side pushing assembly comprises a side pushing sliding seat and a side pushing driving mechanism configured to move the side pushing sliding seat along the second direction; the second mounting seat and the rotating assembly are mounted on the side pushing sliding seat; the second mounting seat is rotatably fixed on the top of the side pushing sliding seat, the rotating assembly comprises a gear ring fixed on the outer periphery of the second mounting seat, a driving gear in meshing connection with the gear ring and a rotating driving member configured to rotate the driving gear.

2. The hot melt adhesive performance detection device according to claim 1, wherein: the locking assembly comprises a first clamping portion, a second clamping portion and a locking driving member, the outer periphery of the first mounting seat is circumferentially spaced with a plurality of first clamping portions, the locking driving member is in driving connection with the second clamping portion, and the locking driving member is configured to drive the second clamping portion to radially abut against the first clamping portion to lock the circumferential rotation and the lateral movement of the first mounting seat.

3. The hot melt adhesive performance detection device according to claim 2, wherein: The locking driving member is slidably adjustable along the first direction.

4. The hot melt adhesive performance detection device according to claim 1, characterized in that: The top surface of the first mounting seat opposite to the second mounting seat is provided with a connecting seat which is slidably arranged along the radial direction; The stretching driving mechanism has a driving telescopic end in transmission connection with the connecting seat, and the stretching assembly further comprises a transverse movement driving mechanism in transmission connection with the stretching driving mechanism, which is used to drive the stretching driving mechanism to move along the radial direction so as to drive the connecting seat to move to the edge and the center of the first mounting seat.

5. The hot melt adhesive performance detection device according to claim 1, characterized in that: The opposite surfaces of the first mounting seat and the second mounting seat are both provided with a plurality of mounting grooves, and the side wall of the mounting groove is provided with a locking through hole in communication with the outside; The surfaces of the two adhesive sample plates opposite to each other are provided with a plurality of plug-in fittings, the plug-in fittings are one-to-one inserted into the mounting grooves, the side wall of the plug-in fitting is provided with a lock hole opposite to the locking through hole, and the lock hole and the locking through hole are provided with a locking pin.

6. The hot melt adhesive performance detection device according to claim 1, characterized in that: The first mounting seat and the second mounting seat are both internally embedded with heat exchange pipes.

7. A method for detecting the performance of a hot melt adhesive, characterized by: The hot melt adhesive performance detection method is suitable for the hot melt adhesive performance detection device according to any one of claims 1 to 6, and the method comprises: The hot melt adhesive to be detected is applied to the surface of at least one of the adhesive sample plates; The two adhesive sample plates are pressed together according to a preset pressing force, and are cooled and solidified; When the longitudinal adhesive strength of the hot melt adhesive is detected, the two adhesive sample plates are controlled to move away from each other according to a preset pulling force; When the circumferential adhesive strength of the hot melt adhesive is detected, one of the adhesive sample plates is controlled to be locked, and the other adhesive sample plate is controlled to rotate along the circumferential direction according to a preset torsion force; When the lateral adhesive strength of the hot melt adhesive is detected, the two adhesive sample plates are controlled to rotate to different lateral detection positions, in each lateral detection position, one of the adhesive sample plates is controlled to be locked, and the other adhesive sample plate is controlled to move laterally according to a preset lateral force.

Images