Strength testing equipment for building panels

Abstract

The present invention relates to the technical field of strength detection of building boards, and specifically to a strength detection device for building boards, comprising a supporting tube, a matching tube and a detection tube. The matching tube and the detection tube are sequentially sleeved on the supporting tube, and an absorption tube is arranged on the matching tube. An adhesive plate is arranged on the detection tube, and an absorption cavity is defined between the absorption tube and the adhesive plate. An adjustment cavity is defined between the matching tube and the detection tube. The adjustment cavity can be connected to the absorption cavity. A strength detection device for building boards of the present invention cooperates by setting a supporting tube, a matching tube and a detection tube. When the adhesive plate is adhered to the board, the volume of the adjustment cavity increases and forms a negative pressure state. When the adhesive overflows from between the adhesive plate and the sample board, it will be sucked into the absorption cavity under the action of negative pressure when passing through the absorption cavity, so as to prevent the adhesive from overflowing into the cutting seam, thereby improving the accuracy of the detection result.

Description

Technical Field

[0001] The present invention relates to the technical field of strength detection of building boards, and in particular to a strength detection device for building boards. Background Art

[0002] Building panels refer to components used as walls, ceilings or floors. Common building panel testing items include strength testing, size testing, humidity testing, surface quality testing, wear resistance testing, bonding strength testing, and environmental testing.

[0003] The bonding strength of building panels is an important indicator to ensure their stability and durability under various environments and load conditions. If the bonding quality is poor, the panels may crack or delaminate due to bearing pressure during use. In severe cases, it may cause the collapse of the building and threaten the safety of the building. Therefore, it is very important to test the bonding strength of building panels.

[0004] Adhesive strength testing equipment is a special instrument used to measure the adhesive strength between plates. Before testing, a sample is selected from the whole plate, and then a cutting machine is used to separate the sample plate from the whole plate to form a cutting seam between the sample plate and the whole plate. Then, the bonding plate is bonded to the sample plate, and then a pulling force is applied to the bonded sample plate to evaluate the bonding strength of the plate. However, when the existing testing equipment is used, the adhesive on the bonding plate is easily overflowed to the surrounding area during the process of bonding to the surface of the sample plate, and solidified in the cutting seam between the sample plate and the whole plate, causing the sample plate to adhere to the surrounding plates, which will have an adverse effect on the subsequent pulling force test, resulting in errors in the test results and reducing the accuracy of the test results. Summary of the invention

[0005] The invention provides a strength testing device for building boards, so as to solve the problem that when the existing testing device is used, adhesive easily overflows to the surroundings, causing the sample board to adhere to the surrounding boards, thereby reducing the accuracy of the test result.

[0006] A strength testing device for building boards of the present invention adopts the following technical scheme: a strength testing device for building boards, used for testing the bonding strength of boards, comprises a supporting tube, a matching tube and a testing tube; the supporting tube and the sample board are arranged in sequence in the first direction, the first direction being the horizontal axis direction of the supporting tube; the matching tube and the testing tube are sleeved in sequence on the supporting tube, and the matching tube is located between the testing tube and the supporting tube; an absorbing tube is arranged at one end of the matching tube close to the sample board in the first direction, an adhesive plate is arranged at one end of the testing tube close to the sample board in the first direction, the absorbing tube is sleeved on the adhesive plate, and the absorbing tube and the adhesive plate are sleeved on the adhesive plate. An absorption chamber is defined between the connecting plates; an adjustment chamber is defined between the matching cylinder and the detection cylinder, and both the matching cylinder and the detection cylinder can move along the first direction, thereby increasing or decreasing the volume of the adjustment chamber; the adjustment chamber and the absorption chamber are connected through an airway, and the airway has an open state and a closed state. When in the open state, the adjustment chamber and the absorption chamber are connected, and when in the closed state, the adjustment chamber is not connected with the absorption chamber. In the initial state, the airway is in a closed state, and the detection cylinder moves relative to the matching cylinder along the first direction toward the side close to the sample plate, which can switch the airway to the open state, increase the volume of the adjustment chamber, and form a negative pressure inside the adjustment chamber.

[0007] Furthermore, the absorption tube is a square tube, and the bonding plate is a square plate.

[0008] Furthermore, a connecting plate is fixedly connected to the supporting tube, and two supporting plates are evenly distributed on the connecting plate around the first direction. The supporting plates are located on a side of the connecting plate close to the sample plate in the first direction, and the two supporting plates are parallel to the first direction.

[0009] Furthermore, a first ring platform is coaxially arranged on the inner circumferential wall surface of the matching cylinder, and the first ring platform is slidably sealed with the detection cylinder. A second ring platform is coaxially arranged on the outer circumferential wall surface of the detection cylinder, and the second ring platform is slidably sealed with the matching cylinder. The first ring platform and the second ring platform are arranged sequentially in the first direction, and the first ring platform is located on the side of the second ring platform away from the sample plate in the first direction. The adjustment cavity is defined by the matching cylinder, the detection cylinder, the first ring platform and the second ring platform.

[0010] Furthermore, it also includes a contact rod, and the matching cylinder, the detection cylinder and the contact rod are sequentially sleeved on the supporting cylinder, and the contact rod is located in the detection cylinder; the airway is opened on the contact rod and arranged along the first direction, and the two ends of the airway along the first direction are respectively called the head end and the tail end, and the head end is located on the side of the tail end close to the sample plate in the first direction; the detection cylinder is provided with an air inlet hole and an air guide hole, the air inlet hole is located on the side of the air guide hole close to the sample plate in the first direction, and the air inlet hole is always connected with the absorption chamber, and the air guide hole is always connected with the regulating chamber, and the detection cylinder moves relative to the matching cylinder along the first direction toward the side close to the sample plate so that the air inlet hole is connected with the head end of the airway, and the air guide hole is connected with the tail end of the airway, thereby switching the airway to an open state to connect the regulating chamber and the absorption chamber.

[0011] Furthermore, in the initial state, the distances from one end of the contact rod, the absorption tube and the adhesive plate close to the sample plate in the first direction to the sample plate increase successively, and a first elastic member is arranged between the absorption tube and the adhesive plate, and the first elastic member is arranged along the first direction. In the initial state, the first elastic member is in a compressed state, and the detection tube moves relative to the matching tube along the first direction toward the side close to the sample plate so that the ends of the contact rod, the absorption tube and the adhesive plate close to the sample plate in the first direction are all in contact with the sample plate, and when the ends of the contact rod, the absorption tube and the adhesive plate close to the sample plate in the first direction are all in contact with the sample plate, the first elastic member is still in a compressed state.

[0012] Furthermore, an installation groove is provided on the adhesive plate, and a limit section is provided on the contact rod. The contact rod includes an optical axis section and a limit section. Both ends of the limit section along the first direction are optical axis sections. The roughness of the outer peripheral wall of the limit section is greater than the roughness of the outer peripheral wall of the optical axis section. In an initial state, the limit section is installed in the installation groove, and the friction force between the limit section and the installation groove is greater than the elastic force of the first elastic member; and in an initial state, the distance between one end of the absorption tube close to the sample plate in the first direction and the sample plate is a first preset value, and the size of the limit section in the first direction is a second preset value, which is smaller than the first preset value.

[0013] Furthermore, a second elastic member is arranged between the contact rod and the detection cylinder, and the second elastic member is arranged along the first direction.

[0014] Furthermore, it also includes a lifting frame, which is installed on the matching cylinder and is located on a side of the matching cylinder away from the sample plate in the first direction, and is used to drive the matching cylinder to move in the first direction.

[0015] Furthermore, it also includes a tension rod, which passes through the lifting frame along the first direction and is fixedly connected to the detection tube. A rotating rod is provided on the tension rod. The rotating rod and the tension rod are spirally matched, and the tension rod is matched with a key slot of the lifting frame, so that the tension rod can slide relative to the lifting frame in the first direction and limit the rotation of the tension rod around the first direction. A sensor is provided on the tension rod.

[0016] The beneficial effects of the present invention are as follows: a strength testing device for building panels of the present invention cooperates by setting a supporting tube, a matching tube and a testing tube. When the adhesive plate is adhered to the panel, the airway is switched to an open state, so that the absorption chamber is connected to the regulating chamber, and the volume of the regulating chamber is increased, and a negative pressure state is formed. Therefore, the adhesive overflowing from between the adhesive plate and the sample panel will be sucked into the absorption chamber under the action of negative pressure when passing through the absorption chamber, preventing the adhesive from overflowing into the cutting seam, making the sample panel adhere to the entire panel, avoiding adverse effects on subsequent detection, and improving the accuracy of the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic diagram of the overall structure of an embodiment of a strength testing device for building panels of the present invention;

[0019] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0020] Figure 3 It is a disassembled diagram of the overall structure of an embodiment of a strength testing device for building panels of the present invention;

[0021] Figure 4 It is a front view of the overall structure of an embodiment of a strength testing device for building panels of the present invention without the tension mechanism;

[0022] Figure 5 for Figure 4 Cross-sectional view along the middle line BB;

[0023] Figure 6 for Figure 5 Enlarged view of point C in the middle;

[0024] Figure 7 for Figure 5 The enlarged view of point D in the middle;

[0025] Figure 8 It is a schematic diagram of the first increase in volume of the adjusting chamber of an embodiment of a strength testing device for building boards of the present invention;

[0026] Fig. 9 for Figure 8 Enlarged view of point E in the middle;

[0027] Fig.10 It is a schematic diagram of the second increase in volume of the adjustment chamber of an embodiment of a strength testing device for building boards of the present invention;

[0028] Fig.11 for Fig.10 Enlarged view of point F in the middle.

[0029] In the figure: 100, support cylinder; 110, sliding bearing; 120, connecting plate; 130, support plate; 200, matching cylinder; 201, first ring platform; 210, absorption cylinder; 211, through groove; 220, absorption cavity; 300, detection cylinder; 301, second ring platform; 302, air inlet hole; 303, air guide hole; 310, adhesive plate; 320, adjustment cavity; 330, first elastic member; 400, air duct; 500, contact rod; 510, second elastic member; 600, lifting frame; 700, tension rod; 710, rotating rod. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] An embodiment of a strength testing device for building boards of the present invention is as follows: Figures 1 to 11 shown.

[0032] A strength testing device for building board is used to test the bonding strength of sample board, comprising a support tube 100, a matching tube 200 and a testing tube 300. The support tube 100 and the sample board are arranged in sequence in a first direction, and the first direction is the horizontal axis direction of the support tube 100.

[0033] The matching cylinder 200 and the detection cylinder 300 are sleeved on the support cylinder 100 in sequence, and a sliding bearing 110 is installed between the support cylinder 100 and the matching cylinder 200, and the matching cylinder 200 is located between the detection cylinder 300 and the support cylinder 100. An absorption cylinder 210 is fixedly provided at one end of the matching cylinder 200 close to the sample plate in the first direction, and an adhesive plate 310 is detachably provided at one end of the detection cylinder 300 close to the sample plate in the first direction, specifically, the detection cylinder 300 can be clamped with the adhesive plate 310. The size of the adhesive plate 310 is equal to the size of the sample plate, and the absorption cylinder 210 is sleeved on the adhesive plate 310, and an absorption cavity 220 is defined between the inner peripheral wall surface of the absorption cylinder 210 and the outer peripheral wall surface of the adhesive plate 310.

[0034] An adjusting chamber 320 is defined between the matching cylinder 200 and the detection cylinder 300. Both the matching cylinder 200 and the detection cylinder 300 can move along the first direction, thereby increasing or decreasing the volume of the adjusting chamber 320. The adjusting chamber 320 and the absorption chamber 220 are connected through the air channel 400. The air channel 400 has an open state and a closed state. When in the open state, the adjusting chamber 320 is connected to the absorption chamber 220. When in the closed state, the adjusting chamber 320 is not connected to the absorption chamber 220. In the initial state, the air channel 400 is in a closed state, and the detection cylinder 300 moves relative to the matching cylinder 200 along the first direction toward the side close to the sample plate, so that the air channel 400 is switched to the open state, and the volume of the adjusting chamber 320 is increased, and a negative pressure is formed inside the adjusting chamber 320.

[0035] Specifically, the absorption tube 210 is a square tube, the adhesive plate 310 is a square plate, and the size of the adhesive plate 310 is 100 mm*100 mm.

[0036] In this embodiment, the supporting cylinder 100, the matching cylinder 200 and the detection cylinder 300 are arranged to cooperate with each other. When in use, a sample is first selected from the whole plate, and then the sample plate is separated from the whole plate by a cutting machine to form a cutting seam between the sample plate and the whole plate. Then, adhesive is evenly coated on the bonding plate 310, and then the building plate is aligned with the sample plate by a strength testing device. At the same time, the detection cylinder 300 is driven to move relative to the matching cylinder 200 along the first direction toward the side close to the sample plate so that the airway 400 is switched to the open state, thereby increasing the volume of the regulating chamber 320. See the attached Figure 5 To Attachment Fig. 9 As shown, this is the first time that the volume of the regulating chamber 320 increases, and negative pressure is formed inside the regulating chamber 320 .

[0037] When the adhesive plate 310 is adhered to the plate, the air channel 400 switches to an open state, so that the absorption chamber 220 is connected with the regulating chamber 320. Since the volume of the regulating chamber 320 increases and a negative pressure state is formed, the adhesive overflowing from between the adhesive plate 310 and the sample plate will be sucked into the absorption chamber 220 under the action of negative pressure when passing through the absorption chamber 220, thereby preventing the adhesive from overflowing into the cutting seam and causing the sample plate to adhere to the entire plate, thereby avoiding adverse effects on subsequent testing and improving the accuracy of the test results.

[0038] It should be noted that the amount of adhesive that overflows is not large, so after being sucked out, the adhesive will only exist in the absorption chamber 220, and will not completely block the absorption chamber 220, that is, between the inner peripheral wall surface of the absorption tube 210 and the outer peripheral wall surface of the adhesive plate 310, it will not flow into the air channel 400. Because the air channel 400 connects the regulating chamber 320 and the absorption chamber 220, the external gas can enter the regulating chamber 320 from the absorption chamber 220 through the air channel 400 until the air pressure in the regulating chamber 320 is equal to the external atmospheric pressure.

[0039] In this embodiment, a connecting plate 120 is fixedly connected to the support tube 100. The connecting plate 120 is a square plate. Two supporting plates 130 are evenly distributed on the connecting plate 120 around the first direction. The supporting plate 130 is located on a side of the connecting plate 120 close to the sample plate in the first direction. Both supporting plates 130 are parallel to the first direction and are square plates.

[0040] By providing the support plate 130 , when in use, the support plate 130 is in contact with the entire board, thereby improving the stability of the strength testing equipment for the entire building board.

[0041] In this embodiment, a first ring stage 201 is coaxially arranged on the inner circumferential wall surface of the matching cylinder 200, and the first ring stage 201 is slidably sealed with the detection cylinder 300. A second ring stage 301 is coaxially arranged on the outer circumferential wall surface of the detection cylinder 300, and the second ring stage 301 is slidably sealed with the matching cylinder 200. The first ring stage 201 and the second ring stage 301 are arranged sequentially in the first direction, and the first ring stage 201 is located on the side of the second ring stage 301 away from the sample plate in the first direction. The adjustment cavity 320 is defined by the matching cylinder 200, the detection cylinder 300, the first ring stage 201 and the second ring stage 301, so that the matching cylinder 200 or the detection cylinder 300 moves along the first direction, which can increase or decrease the volume of the adjustment cavity 320.

[0042] In this embodiment, a strength testing device for building board further includes a contact rod 500, and the matching cylinder 200, the testing cylinder 300 and the contact rod 500 are sequentially sleeved on the supporting cylinder 100, and the contact rod 500 is located in the testing cylinder 300. The air channel 400 is opened on the contact rod 500 and arranged along the first direction, and the two ends of the air channel 400 along the first direction are respectively called the head end and the tail end, and the head end is located on the side of the tail end close to the sample board in the first direction.

[0043] An air inlet hole 302 and an air guide hole 303 are provided on the detection cylinder 300. The air inlet hole 302 is located on a side of the air guide hole 303 close to the sample plate in the first direction, and the air inlet hole 302 is always connected to the absorption chamber 220, and the air guide hole 303 is always connected to the regulating chamber 320. When the detection cylinder 300 moves relative to the matching cylinder 200 along the first direction toward the side close to the sample plate, the air inlet hole 302 can be connected to the head end of the airway 400, and the air guide hole 303 can be connected to the tail end of the airway 400, thereby switching the airway 400 to an open state to connect the regulating chamber 320 and the absorption chamber 220.

[0044] In this embodiment, in the initial state, the distances from the contact rod 500, the absorption tube 210 and the end of the adhesive plate 310 close to the sample plate in the first direction to the sample plate increase in sequence, that is, the distance from the contact rod 500 to the sample plate in the first direction is the shortest, and the distance from the adhesive plate 310 to the sample plate in the first direction is the farthest. The support plate 130 and the end of the contact rod 500 close to the sample plate in the first direction have the same distance from the sample plate in the first direction. A first elastic member 330 is arranged between the absorption tube 210 and the adhesive plate 310. The first elastic member 330 is arranged along the first direction. The first elastic member 330 is a spring. In the initial state, the first elastic member 330 is in a compressed state. The detection tube 300 moves relative to the matching tube 200 along the first direction toward the side close to the sample plate so that the contact rod 500, the absorption tube 210 and the adhesive plate 310, one end of which is close to the sample plate in the first direction, are all in contact with the sample plate. When the contact rod 500, the absorption tube 210 and the adhesive plate 310, one end of which is close to the sample plate in the first direction, are all in contact with the sample plate, the first elastic member 330 is still in a compressed state.

[0045] Specifically, the adhesive plate 310 is provided with a mounting groove, the contact rod 500 includes an optical axis segment and a limiting segment, both ends of the limiting segment along the first direction are optical axis segments, the roughness of the outer peripheral wall of the limiting segment is greater than the roughness of the outer peripheral wall of the optical axis segment, the limiting segment is installed in the mounting groove in the initial state, and the friction between the limiting segment and the mounting groove is greater than the elastic force of the first elastic member 330, so that the first elastic member 330 cannot be reset under the restriction of the limiting segment in the initial state. In addition, in the initial state, the distance between the end of the absorption tube 210 close to the sample plate in the first direction and the sample plate is a first preset value, the size of the limiting segment in the first direction is a second preset value, and the second preset value is smaller than the first preset value, so that when the limiting segment moves the first preset value in the first direction, the limiting segment will be separated from the mounting groove, so that the optical axis segment and the mounting groove are slidably matched, and when the optical axis segment is in the mounting groove, the first elastic member 330 is no longer restricted from resetting.

[0046] Furthermore, a second elastic member 510 is disposed between the contact rod 500 and the detection cylinder 300 . The second elastic member 510 is disposed along the first direction and is a spring.

[0047] See attached Figure 4 and attached Figure 5 As shown, when installing the strength testing equipment for building boards, after the support tube 100, the matching tube 200, the testing tube 300 and the contact rod 500 are installed, the bonding plate 310 is installed last, and the operator manually assembles the bonding plate 310 and the contact rod 500, and manually operates the bonding plate 310 to compress the first elastic member 330, so that the installed first elastic member 330 is in a compressed state, that is, the first elastic member 330 is in a compressed state in the initial state. And the second elastic member 510 is in a natural state after installation.

[0048] When in use, the support plate 130 is abutted against the whole plate, the contact rod 500 is abutted against the sample plate, and the contact rod 500 is not moved, that is, in the subsequent bonding and testing process, the contact rod 500 remains stationary. The bonding plate 310 is aligned with the sample plate, and then the matching cylinder 200 is driven to move toward the side close to the sample plate in the first direction, so that the absorption cylinder 210 moves toward the side close to the sample plate along the first direction.

[0049] Due to the friction between the limiting section of the contact rod 500 and the mounting groove and the existence of the second elastic member 510, the movement of the detection cylinder 300 and the adhesive plate 310 will be limited, so that the matching cylinder 200 further compresses the first elastic member 330 when moving, and when the elastic force of the first elastic member 330 is sufficient to overcome the friction between the limiting section of the contact rod 500 and the mounting groove and the elastic force of the second elastic member 510, the adhesive plate 310 and the detection cylinder 300 are urged to move along the first direction to the side close to the sample plate.

[0050] Furthermore, because the size of the limiting segment in the first direction is smaller than the distance between the end of the absorption tube 210 close to the sample plate in the first direction and the sample plate, that is, the second preset value is smaller than the first preset value. Therefore, when the adhesive plate 310 and the detection cylinder 300 move along the first direction to the side close to the sample plate by a second preset value, the adhesive plate 310 will leave the limiting section. At this time, the mounting groove and the optical axis section are slidably matched, and the friction force when the optical axis section and the mounting groove are matched is much smaller than the friction force when the mounting groove and the limiting section are matched. The first elastic member 330 is still in a compressed state. Although the second elastic member 510 will be compressed if the adhesive plate 310 wants to continue to move along the first direction to the side close to the sample plate, the elastic coefficient of the first elastic member 330 can be set to be greater than the elastic coefficient of the second elastic member 510, that is, the elastic force of the first elastic member 330 can overcome the friction between the mounting groove and the optical axis section and the elastic force of the second elastic member 510, and continue to urge the adhesive plate 310 to move along the first direction to the side close to the sample plate until the contact rod 500, the absorption cylinder 210 and the end of the adhesive plate 310 close to the sample plate in the first direction are all in contact with the sample plate, and at this time, the first elastic member 330 is still in a compressed state.

[0051] By utilizing the limiting section on the contact rod 500 to cooperate with the second elastic member 510, the detection cylinder 300 moves to contact the sample plate later than the matching cylinder 200, ensuring that the adhesive plate 310 contacts the sample plate only after the matching cylinder 200 moves to contact the sample plate. At this time, the detection cylinder 300 will also move to connect the air inlet 302 with the head end of the air channel 400, and the air guide hole 303 with the tail end of the air channel 400, to prevent the detection cylinder 300 from moving too fast with the adhesive plate 310, so that the regulating chamber 320 and the absorption chamber 220 are connected in advance, thereby reducing the suction effect on the adhesive.

[0052] And the distance moved by the matching cylinder 200 is smaller than the distance moved by the detection cylinder 300, that is, the detection cylinder 300 moves relative to the matching cylinder 200 along the first direction toward the side close to the sample plate, thereby increasing the volume of the regulating chamber 320 and forming a negative pressure inside the regulating chamber 320. At this time, the air inlet 302 is connected to the head end of the airway 400, and the air guide hole 303 is connected to the tail end of the airway 400, thereby opening the airway 400, connecting the regulating chamber 320 with the absorption chamber 220, so that the external gas can enter the regulating chamber 320 from the absorption chamber 220 through the airway 400, until the air pressure in the regulating chamber 320 is equal to the external atmospheric pressure.

[0053] In this process, although the detection cylinder 300 moves relative to the matching cylinder 200 to reset the first elastic member 330 for a certain distance, the first elastic member 330 is still in a compressed state at this time.

[0054] Then, the matching cylinder 200 is moved in the first direction to the side away from the sample plate. Since the first elastic member 330 is still in a compressed state, when the matching cylinder 200 moves, the absorption cylinder 210 and the adhesive plate 310 will move away from each other in the first direction. The first elastic member 330 is gradually reset, and the matching cylinder 200 moves relative to the detection cylinder 300, which will cause the first ring stage 201 and the second ring stage 301 to move away from each other in the first direction, so that the absorption cylinder 210 and the adhesive portion of the adhesive plate 310 are disengaged in the first direction, thereby further increasing the volume of the adjustment chamber 320. See the attached Figure 8 To Attachment Fig.11 As shown in FIG. 1 , it is the process of the second increase in the volume of the regulating chamber 320 , and negative pressure is formed inside the regulating chamber 320 .

[0055] The detection cylinder 300 and the matching cylinder 200 move relative to each other in the first direction, which will cause the absorption cylinder 210 to move relative to the adhesive plate 310 in the first direction, so as to separate the absorption cylinder 210 from the adhesive plate 310, thereby preventing the adhesive between the absorption cylinder 210 and the adhesive plate 310 from fixing the two together and making them difficult to separate later. At this time, the volume of the adjustment chamber 320 is further increased, which will generate a suction force on the adhesive between the absorption cylinder 210 and the adhesive plate 310, thereby preventing the adhesive from being squeezed out of the absorption chamber 220 when the absorption cylinder 210 and the adhesive plate 310 move relative to each other.

[0056] In this embodiment, a strength testing device for building boards also includes a tension mechanism, which includes a lifting frame 600. The lifting frame 600 is installed on the matching cylinder 200 and is located on a side of the matching cylinder 200 away from the sample board in the first direction. The lifting frame 600 is used to drive the matching cylinder 200 to move in the first direction.

[0057] In this embodiment, a lifting frame 600 is provided. When in use, the lifting frame 600 drives the matching cylinder 200 to move in the first direction.

[0058] In this embodiment, the pulling mechanism also includes a pulling rod 700, which passes through the lifting frame 600 along the first direction and is fixedly connected to the detection tube 300. A rotating rod 710 is provided on the pulling rod 700. The rotating rod 710 and the pulling rod 700 are spirally matched, and the pulling rod 700 is matched with the key slot of the lifting frame 600, so that the pulling rod 700 can slide relative to the lifting frame 600 in the first direction and limit the rotation of the pulling rod 700 around the first direction. A sensor is provided on the pulling rod 700, and the sensor is electrically connected to the controller of the external device for feedback of the detection parameters of the bonding strength of the sample plate.

[0059] In this embodiment, the tension rod 700 is provided. When in use, when the support plate 130 abuts against the entire plate, the contact rod 500 abuts against the sample plate, and the adhesive plate 310 is aligned with the sample plate, the lifting frame 600 is used to drive the matching cylinder 200 to move in the first direction. Since the lifting frame 600 and the tension rod 700 are matched in the keyway, the lifting frame 600 will slide in the first direction relative to the tension rod 700. After the matching cylinder 200 drives the detection cylinder 300 to move through the first elastic member 330, the detection cylinder 300 will also drive the tension rod 700 to move, so that the tension rod 700 and the lifting frame 600 slide relative to each other.

[0060] After the absorption tube 210 is separated from the adhesive portion of the bonding plate 310, the tension rod 700 is used to cause the detection tube 300 to move along the first direction toward the side away from the sample plate, so as to apply a pulling force to the bonded sample plate. The specific operation is: manually rotate the rotating rod 710. Since the lifting frame 600 and the tension rod 700 are matched in the keyway, the lifting frame 600 can be held by hand to limit the rotation of the lifting frame 600. Therefore, the lifting frame 600 will limit the rotation of the tension rod 700. Therefore, the rotation of the rotating rod 710 will drive the tension rod 700 to move in the first direction through the spiral transmission, and enable the tension rod 700 to drive the detection tube 300 to move in the first direction toward the side away from the sample plate, so as to detect the bonding strength of the sample plate.

[0061] In this embodiment, a plurality of through slots 211 are formed on the end surface of the absorption tube 210 close to the sample plate along the first direction. The plurality of through slots 211 are evenly distributed on the absorption tube 210 along the first direction.

[0062] Further, the number of the through slots 211 located at the lower side in the vertical direction is greater than the number of the through slots 211 located at the upper side in the vertical direction.

[0063] In this embodiment, through grooves 211 are opened on the absorption tube 210. Since the surface of the sample plate is not completely flat, the adhesive plate 310 and the sample plate will not form a seal when bonding. When the adhesive plate 310 moves along the first direction toward the side close to the sample plate, the adhesive plate 310 will apply pressure to the surface of the sample plate, so that the gas can enter the sample plate from the through grooves 211, and the sample plate is automatically purged, thereby improving the bonding effect between the adhesive plate 310 and the sample plate. In addition, the number of through grooves 211 located on the lower side in the vertical direction is greater than the number of through grooves 211 located on the upper side in the vertical direction, which will allow more gas to be sucked in from the lower side, thereby limiting the downward flow of the adhesive under the action of gravity.

[0064] In combination with the above embodiments, the specific working process is as follows:

[0065] When in use, a sample is first selected from the whole plate, and then the sample plate is separated from the whole plate by a cutting machine to form a cutting seam between the sample plate and the whole plate.

[0066] Then the support plate 130 is abutted against the whole plate, the contact rod 500 is abutted against the sample plate, and the contact rod 500 is not moved, that is, in the subsequent bonding and testing process, the contact rod 500 remains stationary. The bonding plate 310 is aligned with the sample plate, and then the lifting frame 600 is used to drive the matching cylinder 200 to move toward the side close to the sample plate in the first direction, so that the absorption cylinder 210 moves toward the side close to the sample plate along the first direction.

[0067] Due to the friction between the contact rod 500 and the mounting groove and the existence of the second elastic member 510, the movement of the detection cylinder 300 and the adhesive plate 310 will be restricted, so that the matching cylinder 200 further compresses the first elastic member 330 when moving, and when the elastic force of the first elastic member 330 is sufficient to overcome the friction between the limiting section of the contact rod 500 and the mounting groove and the elastic force of the second elastic member 510, the adhesive plate 310 and the detection cylinder 300 are urged to move along the first direction to the side close to the sample plate.

[0068] Furthermore, because the size of the limiting segment in the first direction is smaller than the distance between the end of the absorption tube 210 close to the sample plate in the first direction and the sample plate, that is, the second preset value is smaller than the first preset value. Therefore, when the adhesive plate 310 and the detection cylinder 300 move along the first direction to the side close to the sample plate by a second preset value, the adhesive plate 310 will leave the limiting section. At this time, the mounting groove and the optical axis section are slidably matched, and the friction force when the optical axis section and the mounting groove are matched is much smaller than the friction force when the mounting groove and the limiting section are matched. The first elastic member 330 is still in a compressed state. Although the second elastic member 510 will be compressed if the adhesive plate 310 wants to continue to move along the first direction to the side close to the sample plate, the elastic coefficient of the first elastic member 330 can be set to be greater than the elastic coefficient of the second elastic member 510, that is, the elastic force of the first elastic member 330 can overcome the friction between the mounting groove and the optical axis section and the elastic force of the second elastic member 510, and continue to urge the adhesive plate 310 to move along the first direction to the side close to the sample plate until the contact rod 500, the absorption cylinder 210 and the end of the adhesive plate 310 close to the sample plate in the first direction are all in contact with the sample plate, and at this time, the first elastic member 330 is still in a compressed state.

[0069] By utilizing the limiting section on the contact rod 500 to cooperate with the second elastic member 510, the detection cylinder 300 moves to contact the sample plate later than the matching cylinder 200, ensuring that the adhesive plate 310 contacts the sample plate only after the matching cylinder 200 moves to contact the sample plate. At this time, the detection cylinder 300 will also move to a position where the air inlet 302 is connected to the head end of the air channel 400 and the air guide hole 303 is connected to the tail end of the air channel 400, so as to avoid the detection cylinder 300 moving too fast with the adhesive plate 310, so that the regulating chamber 320 and the absorption chamber 220 are connected in advance, thereby reducing the suction effect on the adhesive.

[0070] And the distance moved by the matching cylinder 200 is smaller than the distance moved by the detection cylinder 300, that is, the detection cylinder 300 moves relative to the matching cylinder 200 along the first direction toward the side close to the sample plate, thereby increasing the volume of the regulating chamber 320 and forming a negative pressure inside the regulating chamber 320. At this time, the air inlet 302 is connected to the head end of the airway 400, and the air guide hole 303 is connected to the tail end of the airway 400, thereby opening the airway 400, connecting the regulating chamber 320 with the absorption chamber 220, so that the external gas can enter the regulating chamber 320 from the absorption chamber 220 through the airway 400, until the air pressure in the regulating chamber 320 is equal to the external atmospheric pressure.

[0071] In this process, although the detection cylinder 300 moves relative to the matching cylinder 200 to reset the first elastic member 330 for a certain distance, the first elastic member 330 is still in a compressed state at this time.

[0072] Then, the matching cylinder 200 is moved in the first direction to the side away from the sample plate. Since the first elastic member 330 is still in a compressed state, when the matching cylinder 200 moves, the absorption cylinder 210 and the adhesive plate 310 will move away from each other in the first direction. The first elastic member 330 is gradually reset, and the matching cylinder 200 moves relative to the detection cylinder 300, which will cause the first ring stage 201 and the second ring stage 301 to move away from each other in the first direction, so that the absorption cylinder 210 and the adhesive portion of the adhesive plate 310 are disengaged in the first direction, thereby further increasing the volume of the adjustment chamber 320. See the attached Figure 8 To Attachment Fig.11 As shown in FIG. 1 , it is the process of the second increase in the volume of the regulating chamber 320 , and negative pressure is formed inside the regulating chamber 320 .

[0073] The detection cylinder 300 and the matching cylinder 200 move relative to each other in the first direction, which will cause the absorption cylinder 210 to move relative to the adhesive plate 310 in the first direction, so as to separate the absorption cylinder 210 from the adhesive plate 310, thereby preventing the adhesive between the absorption cylinder 210 and the adhesive plate 310 from fixing the two together and making them difficult to separate later. At this time, the volume of the adjustment chamber 320 is further increased, which will generate a suction force on the adhesive between the absorption cylinder 210 and the adhesive plate 310, thereby preventing the adhesive from being squeezed out of the absorption chamber 220 when the absorption cylinder 210 and the adhesive plate 310 move relative to each other.

[0074] After the absorption tube 210 is separated from the adhesive portion of the bonding plate 310, the tension rod 700 is used to cause the detection tube 300 to move along the first direction toward the side away from the sample plate, so as to apply a pulling force to the bonded sample plate. The specific operation is: manually rotate the rotating rod 710. Since the lifting frame 600 and the tension rod 700 are matched in the keyway, the lifting frame 600 can be held by hand to limit the rotation of the lifting frame 600. Therefore, the lifting frame 600 will limit the rotation of the tension rod 700. Therefore, the rotation of the rotating rod 710 will drive the tension rod 700 to move in the first direction through the spiral transmission, and enable the tension rod 700 to drive the detection tube 300 to move in the first direction toward the side away from the sample plate, so as to detect the bonding strength of the sample plate.

[0075] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A strength testing device for building boards, used to test the bonding strength of boards, characterized in that: It comprises a supporting tube, a matching tube and a detection tube; the supporting tube and the sample plate are arranged in sequence in a first direction, the first direction being the horizontal axis direction of the supporting tube; the matching tube and the detection tube are sleeved in sequence on the supporting tube, and the matching tube is located between the detection tube and the supporting tube; an absorption tube is arranged at one end of the matching tube close to the sample plate in the first direction, an adhesive plate is arranged at one end of the detection tube close to the sample plate in the first direction, the absorption tube is sleeved on the adhesive plate, and an absorption cavity is defined between the absorption tube and the adhesive plate; An adjustment cavity is defined between the matching cylinder and the detection cylinder, and both the matching cylinder and the detection cylinder can move along a first direction, thereby increasing or decreasing the volume of the adjustment cavity; The regulating chamber and the absorption chamber are connected through an air channel, and the air channel has an open state and a closed state. When in the open state, the regulating chamber and the absorption chamber are connected, and when in the closed state, the regulating chamber is not connected with the absorption chamber. In the initial state, the air channel is in a closed state, and the detection cylinder moves relative to the matching cylinder along the first direction toward the side close to the sample plate to switch the air channel to the open state, increase the volume of the regulating chamber, and form a negative pressure inside the regulating chamber; A first ring stage is coaxially arranged on the inner circumferential wall surface of the matching cylinder, and the first ring stage is slidably sealed with the detection cylinder. A second ring stage is coaxially arranged on the outer circumferential wall surface of the detection cylinder, and the second ring stage is slidably sealed with the matching cylinder. The first ring stage and the second ring stage are arranged in sequence in the first direction, and the first ring stage is located on the side of the second ring stage away from the sample plate in the first direction. The adjustment cavity is defined by the matching cylinder, the detection cylinder, the first ring stage and the second ring stage. It also includes a contact rod, and the matching cylinder, the detection cylinder and the contact rod are sequentially sleeved on the support cylinder, and the contact rod is located in the detection cylinder; the airway is opened on the contact rod and arranged along the first direction, and the two ends of the airway along the first direction are respectively called the head end and the tail end, and the head end is located on the side of the tail end close to the sample plate in the first direction; the detection cylinder is provided with an air inlet hole and an air guide hole, the air inlet hole is located on the side of the air guide hole close to the sample plate in the first direction, and the air inlet hole is always connected with the absorption cavity, and the air guide hole is always connected with the regulating cavity, and the detection cylinder moves relative to the matching cylinder along the first direction to the side close to the sample plate so that the air inlet hole is connected with the head end of the airway, and the air guide hole is connected with the tail end of the airway, thereby switching the airway to an open state to connect the regulating cavity and the absorption cavity; In the initial state, the distances from one end of the contact rod, the absorption tube and the adhesive plate close to the sample plate in the first direction to the sample plate increase successively, a first elastic member is arranged between the absorption tube and the adhesive plate, the first elastic member is arranged along the first direction, and the first elastic member is in a compressed state in the initial state. The detection tube moves relative to the matching tube along the first direction to the side close to the sample plate so that the ends of the contact rod, the absorption tube and the adhesive plate close to the sample plate in the first direction are all in contact with the sample plate, and when the ends of the contact rod, the absorption tube and the adhesive plate close to the sample plate in the first direction are all in contact with the sample plate, the first elastic member is still in a compressed state; An installation groove is provided on the adhesive plate, and the contact rod includes an optical axis section and a limit section. Both ends of the limit section along the first direction are optical axis sections, and the roughness of the outer peripheral wall of the limit section is greater than the roughness of the outer peripheral wall of the optical axis section. In an initial state, the limit section is installed in the installation groove, and the friction force between the limit section and the installation groove is greater than the elastic force of the first elastic member; and in an initial state, the distance between one end of the absorption tube close to the sample plate in the first direction and the sample plate is a first preset value, and the size of the limit section in the first direction is a second preset value, and the second preset value is smaller than the first preset value.

2. A strength testing device for building boards according to claim 1, characterized in that: The absorption tube is a square tube, and the bonding plate is a square plate.

3. A strength testing device for building boards according to claim 1, characterized in that: A connecting plate is fixedly connected to the supporting tube. Two supporting plates are evenly distributed on the connecting plate around the first direction. The supporting plates are located on one side of the connecting plate close to the sample plate in the first direction. Both supporting plates are parallel to the first direction.

4. A strength testing device for building boards according to claim 1, characterized in that: A second elastic member is arranged between the contact rod and the detection cylinder, and the second elastic member is arranged along the first direction.

5. The strength testing device for building board according to claim 1, characterized in that: The invention also includes a lifting frame, which is installed on the matching cylinder and is located at a side of the matching cylinder away from the sample plate in the first direction, and is used for driving the matching cylinder to move in the first direction.

6. A strength testing device for building board according to claim 5, characterized in that: It also includes a tension rod, which passes through the lifting frame along the first direction and is fixedly connected to the detection tube. A rotating rod is arranged on the tension rod. The rotating rod and the tension rod are spirally matched, and the tension rod is matched with a key slot of the lifting frame, so that the tension rod can slide relative to the lifting frame in the first direction and limit the rotation of the tension rod around the first direction. A sensor is arranged on the tension rod.

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