A kind of interlayer peeling strength testing equipment for fiberboard

Abstract

The present invention discloses an interlayer peeling strength testing device for fiberboard, which relates to the field of fiberboard testing technology, including a frame, a grabbing frame and a fixed frame, the ends of the grabbing frame and the fixed frame are both equipped with grabbing components, the grabbing components are used to grab and adsorb the fiberboard, the frame is vertically arranged, a plate conveyor is arranged in the middle of the frame, the plate conveyor conveys the fiberboard in the horizontal direction, the fixed frame is arranged in two groups, and the two groups of fixed frames are arranged vertically in the same plane, the grabbing frame is also arranged in two groups, and the two groups of grabbing frames are movably installed on the side wall of the frame, and a pressure sensor is arranged between the grabbing frame and the grabbing component. The present invention first approaches the fiberboard on the plate conveyor together on the two grabbing frames and adsorbs and grasps it, then performs a tearing, and then docks with the grabbing component on the fixed frame for a second tearing, and comprehensively judges the interlayer peeling strength of the fiberboard based on the two test results, so as to obtain more accurate test data.

Description

Technical Field

[0001] The invention relates to the technical field of fiberboard detection, and in particular to an interlayer peeling strength detection device for fiberboard. Background Art

[0002] Fiberboard, also known as density board, is a man-made board made of wood fiber or other plant fiber as raw materials, with urea-formaldehyde resin or other suitable adhesives. Adhesives and (or) additives can be applied during the manufacturing process. Fiberboard has the advantages of uniform material, small vertical and horizontal strength difference, and not easy to crack, and has a wide range of uses. It takes about 2.5 to 3 cubic meters of wood to make 1 cubic meter of fiberboard, which can replace 3 cubic meters of sawn timber or 5 cubic meters of logs. Developing fiberboard production is an effective way to comprehensively utilize wood resources.

[0003] In the actual use of fiberboard, a double-layer or multi-layer structure is usually adopted and compositely bonded. In the production process of fiberboard, it is necessary to sample and test the materials and test the interlayer peel strength of the product to determine the bonding strength between the fibers of the product. This is used as one of the important items for evaluating product quality.

[0004] Most existing testing equipment uses a single peeling of the board and uses a pressure sensor to measure the change in equipment tension when the board is separated to determine the interlayer peeling strength. However, since the board is usually a multi-layer composite structure, the experimental data of only a single peeling test is not accurate enough and difficult to represent the test structure, resulting in poor detection results. Summary of the invention

[0005] The purpose of the present invention is to provide an interlayer peeling strength testing device for fiberboard to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: an interlayer peeling strength testing device for fiberboard, comprising a frame, a grabbing frame and a fixed frame, the ends of the grabbing frame and the fixed frame are both equipped with grabbing components, the grabbing components are used to grab and adsorb the fiberboard, the frame is vertically arranged, a plate conveyor is arranged in the middle of the frame, the plate conveyor conveys the fiberboard in a horizontal direction, the fixed frame is arranged in two groups, and the two groups of fixed frames are arranged vertically in the same plane, the grabbing frame is also arranged in two groups, and the two groups of grabbing frames are movably installed on the side wall of the frame, and a pressure sensor is arranged between the grabbing frame and the grabbing component. A hollow bearing area is provided in the middle of the sheet conveyor, and the fiberboard is conveyed to the hollow bearing area for support, that is, the sheet conveyor is composed of two sets of conveyor belt structures, and the two sets of conveyor belts form a hollow bearing area at the frame. After the fiberboard passes through this area, it crosses the two sets of conveyor belts, so the upper and lower surfaces of the fiberboard at this position are exposed. After the two sets of grabbing frames are flipped vertically, they approach the fiberboard in the upper and lower spaces of the hollow bearing area of ​​the sheet conveyor and absorb and grasp the fiberboard, that is, when the two sets of grabbing frames keep moving away from each other in a vertical state, the fiberboard is torn off and the pressure sensor is used to hold the fiberboard. The device tests the change in tension before and after the fiberboard is torn, and the peeling strength between the fiberboard layers can be measured for the first time. Subsequently, the two groups of grabbing frames are flipped to a horizontal state and approach the two fixed frames respectively, that is, the torn fiberboard carried by the grabbing frames is adsorbed and gripped for a second time through the grabbing components at the ends of the fixed frames. After that, when the two groups of grabbing frames are controlled to move away from the two fixed frames respectively, the peeling strength between the fiberboard layers is measured for the second time. By following this cycle, the peeling strength of the fiberboard can be tested twice in a stable and efficient manner, which improves the detection efficiency while also improving the detection accuracy.

[0007] Preferably, a support plate is fixedly connected to the side of the frame away from the plate conveyor, and a transverse frame is slidably installed inside the support plate, and the transverse frame is arranged to be a U-shaped frame body, including two sets of upper and lower horizontal rods, and one end of the transverse frame close to the grabbing frame is fixedly connected to a guide rod, and the guide rod is vertically arranged, and a transverse support seat is installed on the outer side of the grabbing frame, and the transverse support seat is slidably sleeved with the guide rod, and then the guide rod can be used to support the vertical sliding of the transverse support seat to support the approach and separation between the two grabbing frames, and a guide column is fixedly installed inside the grabbing frame, and the grabbing frame is rotatably installed with the transverse support seat through the guide column, and a damping sleeve is arranged between the guide column and the grabbing frame, and the damping sleeve is used to enable the grabbing frame and the guide column to maintain a fixed posture in the absence of external force, and then the transverse support seat is used to support the rotation of the grabbing frame so that the grabbing frame can perform a flipping movement on the side wall of the frame.

[0008] Preferably, a transverse drive is installed in the support plate, and the transverse drive drives the transverse frame to perform transverse reciprocating sliding motion. The transverse frame uses one of the linear drive components such as an electric push rod, a hydraulic cylinder or a linear motor, and then the transverse drive is used to realize the reciprocating transverse motion of the transverse frame, thereby realizing the horizontal motion drive of the grabbing frame.

[0009] Preferably, two sets of symmetrically arranged guide grooves are provided on the side walls of the frame, the guide grooves include horizontal grooves, and an inclined groove is provided at one end of the horizontal groove close to the plate conveyor. One end of the guide column extends into the guide groove and slides with the horizontal groove and the inclined groove, so that the horizontal movement of the grabbing frame can be driven by the transverse frame. After the guide column enters the inclined groove, the two grabbing frames can be brought close to each other.

[0010] Preferably, rack plates are provided at positions outside the two guide grooves of the frame, and the rack plates are arranged close to the horizontal groove, and gear teeth are provided on the outer wall of the grabbing frame away from the grabbing assembly. When the guide column slides along the horizontal groove to make the grabbing frame pass through the rack plate, the grabbing frame is driven to flip 90° under the meshing action of the gear teeth, that is, when the transverse frame drives the grabbing frame to operate horizontally along the horizontal groove, the grabbing frame will contact the rack plate, and then driven by the rack plate, the grabbing frame will flip to 90° and remain in a vertical state under the action of the damping sleeve until the guide column moves into the inclined groove, and the two grabbing frames remain in a vertical state and move closer to the plate conveyor. , and finally the fiberboard on the sheet conveyor is adsorbed and grasped, and then the transverse frame is controlled to move in the opposite direction, which can drive the two grabbing frames away from each other and tear the fiberboard apart, completing the first measurement of the peeling strength between the fiberboard layers. After the guide column enters the horizontal groove, the grabbing frame cooperates with the rack plate in the opposite direction to make the grabbing frame flip horizontally and move closer to the fixed frame, so that the grabbing component on the fixed frame adsorbs the torn fiberboard again, and when the grabbing frame is driven by the transverse frame to move away from the fixed frame, the second measurement of the peeling strength between the fiberboard layers is completed. This cycle is used to continuously test the fiberboard samples transported by the sheet conveyor.

[0011] Preferably, the grabbing assembly includes a vacuum adsorption disk, and the grabbing frame and the vacuum adsorption disk are connected by a pressure sensor. When the fiberboard is pulled, the tension value between the vacuum adsorption disk and the grabbing frame is detected by means of a guide column, and the fixed frame and the vacuum adsorption disk are fixedly connected, and a rubber edge is fixedly connected to the edge of the vacuum adsorption disk. A vacuum tube is installed in the vacuum adsorption disk, and the outer end of the vacuum tube is connected to a vacuum device, and the vacuum tube is connected to the atmosphere through a reversing valve. In actual use, the pressure state inside the vacuum adsorption disk can be controlled by the vacuum tube. When the rubber edge contacts the fiberboard and presses the fiberboard tightly, a negative pressure is formed in the vacuum adsorption disk through the vacuum tube, so that the fiberboard can be tightened and grasped to facilitate the tearing operation. After the detection is completed, the reversing valve is controlled to connect the vacuum tube to the atmosphere, and the air re-enters the vacuum adsorption disk, so that the negative pressure adsorption of the vacuum adsorption disk on the fiberboard can be released.

[0012] Preferably, a pressure plate is provided inside the vacuum adsorption plate, and the pressure plate is fixedly connected to the vacuum adsorption plate through a columnar structure, and an inclined hole is provided inside the pressure plate, and a pin is slidably installed inside the inclined hole, and a ball head is fixedly connected to the top of the pin. A pushing plate is also provided in the vacuum adsorption plate, and the pushing plate is slidably installed on the outside of the columnar structure, and a fork groove is provided on the edge of the pushing plate, and the ball head slides and engages into the inside of the fork groove, and a sliding drive assembly is installed between the pushing plate and the vacuum adsorption plate, and the sliding drive assembly drives the pushing plate to reciprocate along the columnar assembly. In actual use, after the rubber edge is close to the fiberboard, the pushing plate is controlled to approach the pressure plate while vacuum adsorption is performed, so that the pin can be pressed to insert into the surface of the fiberboard along the inclined hole. The pin is inserted at an angle, which can further tighten the fiberboard, thereby improving the gripping force of the grasping assembly on the fiberboard, thereby ensuring accurate detection.

[0013] Preferably, the sliding drive component is a normal-pressure airbag, which is installed between the pushing plate and the inner wall of the vacuum adsorption plate. The normal-pressure airbag is filled with normal-pressure gas, and when the vacuum adsorption plate is in a normal-pressure state, the normal-pressure airbag is in a normal state. At this time, the pushing plate is also located away from the pressure plate, and each pin is also in a pulled-up state. When the vacuum adsorption plate is in adsorption operation, the vacuum adsorption plate is in a vacuum state, and because gas is stored in the normal-pressure airbag, when the outside of the normal-pressure airbag is vacuum, the gas inside the normal-pressure airbag will expand, thereby pushing the pushing plate toward the pressure plate, thereby pressing the pin tightly, and after the adsorption is completed, the vacuum adsorption plate returns to normal pressure, and the gas in the normal-pressure airbag also returns to normal pressure, so that the pushing plate can be pulled back, and then the pin can be controlled synchronously through the vacuum control in the vacuum adsorption plate, further improving the convenience and practicality of the use of the mechanism.

[0014] In the above technical solution, the technical effects and advantages provided by the present invention are:

[0015] 1. The present invention arranges two groups of movable grabbing frames and two groups of fixed fixing frames on the frame, and uses a plate conveyor to convey and carry fiberboard samples, so that the grabbing components on the two grabbing frames first approach the fiberboard on the plate conveyor together and adsorb and grab it, and then tear it off once, and then the torn fiberboard is docked with the grabbing components on the fixing frames by the grabbing frames for a second tearing, so that the peeling strength of the fiberboard can be tested twice in a stable and efficient manner, and the interlayer peeling strength of the fiberboard can be comprehensively judged based on the two test results, so that more accurate test data can be obtained.

[0016] 2. The present invention forms negative pressure by drawing a vacuum in the vacuum adsorption disk through a vacuum tube, so that the fiberboard can be tightened and grasped. A pressure plate is provided inside the vacuum adsorption disk, and pins are obliquely installed in the pressure plate. When the vacuum adsorption disk is evacuated, the expansion of the gas inside the normal pressure airbag is utilized to push the push plate toward the pressure plate, so that the pins can be pressed tightly, and the pins are inserted into the surface of the fiberboard along the oblique holes, so as to further tighten the fiberboard, increase the gripping force of the gripping component on the fiberboard, and ensure accurate detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the fiberboard of the present invention in one grabbing state.

[0020] Figure 3 It is a schematic diagram of the primary separation state of the fiberboard of the present invention.

[0021] Figure 4 It is a schematic diagram of the secondary grabbing state of the fiberboard of the present invention.

[0022] Figure 5 It is a schematic diagram of the overall structure of the grabbing assembly of the present invention.

[0023] Figure 6 It is a structural schematic diagram of the grasping state of the grasping component of the present invention.

[0024] Description of reference numerals:

[0025] 1. Frame; 11. Support plate; 12. Guide groove; 121. Horizontal groove; 122. Inclined groove; 13. Rack plate; 2. Grabbing frame; 21. Guide column; 22. Pressure sensor; 3. Fixed frame; 4. Grabbing assembly; 41. Vacuum adsorption plate; 411. Vacuum extraction tube; 42. Rubber edge; 43. Pressure plate; 431. Oblique hole; 44. Pin; 441. Ball head; 45. Push plate; 451. Fork groove; 46. Normal pressure airbag; 5. Transverse frame; 51. Guide rod; 52. Transverse drive; 6. Support seat; 7. Plate conveyor. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0027] Example 1

[0028] The present invention provides Figure 1 The interlayer peeling strength testing device for fiberboard shown in the figure comprises a frame 1, a grabbing frame 2 and a fixed frame 3. The ends of the grabbing frame 2 and the fixed frame 3 are both installed with grabbing components 4, and the grabbing components 4 are used to grab and absorb the fiberboard. The frame 1 is vertically arranged, and a plate conveyor 7 is arranged in the middle of the frame 1. The plate conveyor 7 conveys the fiberboard in the horizontal direction. The fixed frame 3 is arranged in two groups, and the two groups of fixed frames 3 are arranged vertically in the same plane. The grabbing frame 2 is also arranged in two groups, and the two groups of grabbing frames 2 are movably installed on the side walls of the frame 1. The grabbing frame 2 and the grabbing frame 2 are connected to each other. A pressure sensor 22 is arranged between the taking components 4, a hollow bearing area is arranged in the middle of the sheet conveyor 7, and the fiberboard is conveyed to the hollow bearing area for support, that is, the sheet conveyor 7 is composed of two sets of conveyor belt structures, and the two sets of conveyor belts form a hollow bearing area at the frame 1. After the fiberboard passes through the area, it crosses the two sets of conveyor belts, so the upper and lower surfaces of the fiberboard at this position are exposed to the outside, and after the two sets of grabbing frames 2 are flipped vertically, they approach the fiberboard in the upper and lower spaces of the hollow bearing area of ​​the sheet conveyor 7, and absorb and grasp the fiberboard, that is, Figure 2 As shown, the two groups of grabbing frames 2 are then kept in a vertical state and moved away from each other, that is, as shown in FIG. Figure 3 As shown, the fiberboard is torn off, and the tension change before and after the fiberboard is torn off is tested by the pressure sensor 22, so that the peeling strength between the fiberboard layers can be measured for the first time. Then, the two groups of grabbing frames 2 are flipped to a horizontal state and approach the two fixing frames 3 respectively, as shown in FIG. Figure 4 As shown, the torn fiber board carried by the grabbing assembly 4 at the end of the fixing frame 3 is adsorbed and gripped for the second time, and then when the two groups of grabbing frames 2 are controlled to move away from the two fixing frames 3 respectively, the peeling strength between the fiber board layers is measured for the second time. By repeating this cycle, the peeling strength of the fiber board can be stably and efficiently tested twice in succession, thereby improving the detection efficiency and the detection accuracy.

[0029] Furthermore, in the above technical solution, if Figure 1As shown, a support plate 11 is fixedly connected to the side of the frame 1 away from the plate conveyor 7, and a transverse frame 5 is slidably installed inside the support plate 11, and the transverse frame 5 is set to a U-shaped frame body, including two sets of upper and lower horizontal rods, and one end of the transverse frame 5 close to the grabbing frame 2 is fixedly connected to a guide rod 51, and the guide rod 51 is vertically arranged, and a transverse support seat 6 is installed on the outer side of the grabbing frame 2, and the transverse support seat 6 is slidably sleeved with the guide rod 51, and then the guide rod 51 can be used to support the vertical sliding of the transverse support seat 6 to support the approach and distance between the two grabbing frames 2, and a guide column 21 is fixedly installed inside the grabbing frame 2, and the grabbing frame 2 is rotatably installed with the transverse support seat 6 through the guide column 21, and a damping sleeve is arranged between the guide column 21 and the grabbing frame 2, and the damping sleeve is used to enable the grabbing frame 2 and the guide column 21 to maintain a fixed posture without external force, and then the transverse support seat 6 is used to support the rotation of the grabbing frame 2, so that the grabbing frame 2 can be flipped on the side wall of the frame 1.

[0030] Furthermore, in the above technical solution, if Figures 1 to 5 As shown, a transverse drive 52 is installed in the support plate 11, and the transverse drive 52 drives the transverse frame 5 to slide back and forth laterally. The transverse frame 5 uses one of the linear drive components such as an electric push rod, a hydraulic cylinder or a linear motor, and then the transverse drive 52 is used to realize the reciprocating transverse movement of the transverse frame 5, thereby realizing the horizontal movement drive of the grabbing frame 2.

[0031] Furthermore, in the above technical solution, if Figure 1 As shown, two sets of symmetrically arranged guide grooves 12 are provided on the side walls of the frame 1, and the guide grooves 12 include a horizontal groove 121. An inclined groove 122 is provided at one end of the horizontal groove 121 close to the plate conveyor 7. One end of the guide column 21 extends into the guide groove 12 and slidably cooperates with the horizontal groove 121 and the inclined groove 122, so that the horizontal movement of the grabbing frame 2 can be driven by the transverse frame 5. After the guide column 21 enters the inclined groove 122, the two grabbing frames 2 can be brought close to each other.

[0032] Furthermore, in the above technical solution, if Figure 1 As shown, the rack 1 is provided with rack plates 13 at positions outside the two guide slots 12, and the rack plates 13 are arranged close to the horizontal slot 121. The outer wall of the grabbing frame 2 away from the grabbing assembly 4 is provided with gear teeth. When the guide column 21 slides along the horizontal slot 121 so that the grabbing frame 2 passes through the rack plate 13, as shown in FIG. Figure 3As shown, under the meshing action of the gear teeth, the grabbing frame 2 is driven to flip 90°, that is, when the transverse frame 5 drives the grabbing frame 2 to run horizontally along the horizontal groove 121, the grabbing frame 2 will contact the rack plate 13, and then driven by the rack plate 13, the grabbing frame 2 is flipped to 90° and maintained in a vertical state under the action of the damping sleeve until the guide column 21 moves into the inclined groove 122. The two grabbing frames 2 maintain a vertical state and move closer to the sheet conveyor 7, and finally the fiberboard on the sheet conveyor 7 is adsorbed and grasped, and then the transverse frame 5 is controlled to move in the opposite direction. The two grabbing frames 2 are driven away from each other and the fiberboard is torn off to complete the first measurement of the peeling strength between the fiberboard layers. After the guide column 21 enters the horizontal groove 121, the grabbing frame 2 cooperates with the rack plate 13 in reverse to make the grabbing frame 2 flip horizontally and move closer to the fixed frame 3, so that the grabbing assembly 4 on the fixed frame 3 adsorbs the torn fiberboard again, and when the grabbing frame 2 is driven away from the fixed frame 3 by the transverse frame 5, the second measurement of the peeling strength between the fiberboard layers is completed. This cycle is repeated to continuously test the fiberboard samples transported by the board conveyor 7.

[0033] Working principle: by arranging two groups of movable grabbing frames 2 and two groups of fixed fixing frames 3 on the frame 1, and using the board conveyor 7 to convey and carry the fiberboard sample, the grabbing components 4 on the two grabbing frames 2 can first be close to the fiberboard on the board conveyor 7 and adsorbed and grasped, and then a tearing is performed, and then the torn fiberboard is docked with the grabbing components 4 on the fixing frame 3 by the grabbing frame 2 for a second tearing, so that the peeling strength of the fiberboard can be stably and efficiently tested twice in succession, and the interlayer peeling strength of the fiberboard can be comprehensively judged based on the two test results, so as to obtain more accurate test data, and by supporting the two groups of grabbing frames 2 with the transverse moving frame 5 to control the transverse movement of the two groups of grabbing frames 2, and by using the guide rod 51 to support the transverse support seat 6, the vertical movement of the two groups of grabbing frames 2 is realized, and then the guide groove 12 is used to guide the guide column 21, and the rack plate 13 is used to guide the end of the grabbing frame 2 The meshing of the gear teeth makes the guide column 21 slide in the horizontal groove 121 first when the transverse moving frame 5 moves to the left, and then flips to a vertical state after the grabbing frame 2 contacts the rack plate 13. When the guide column 21 enters the inclined groove 122, the two grabbing frames 2 remain in a vertical state and approach each other, so that the fiberboard on the sheet conveyor 7 can be adsorbed and grasped, and then the transverse moving frame 5 is controlled to move in the reverse direction. The two grabbing frames 2 first move away from each other for a tearing, and then flip back to a horizontal state after encountering the rack plate 13, and then continue to move to the right until they are docked with the grabbing assembly 4 on the fixed frame 3, so that the torn fiberboard can be grasped again, and a second tearing can be performed when the grabbing frame 2 moves to the left. The pressure sensor 22 on the grabbing frame 2 performs tension detection for both tearing, so as to determine the limit tension value to which the fiberboard is subjected when tearing, thereby automatically completing the interlayer peeling strength detection of the fiberboard, improving the detection efficiency and also improving the detection accuracy.

[0034] Example 2

[0035] Based on Example 1, in order to ensure that the device can stably grasp the fiberboard and ensure the accuracy of the device detection, this embodiment provides a method such as Figure 5 and Figure 6 The grab assembly 4 shown is used for the fiberboard interlayer peeling strength sampling test, the grab assembly 4 includes a vacuum adsorption disc 41, the grab frame 2 and the vacuum adsorption disc 41 are connected through a pressure sensor 22, the guide column 21 is used to detect the tension value between the vacuum adsorption disc 41 and the grab frame 2 when the fiberboard is pulled, and the fixed frame 3 and the vacuum adsorption disc 41 are fixedly connected, the edge of the vacuum adsorption disc 41 is fixedly connected with a rubber edge 42, a vacuum suction tube 411 is installed in the vacuum adsorption disc 41, the outer end of the vacuum suction tube 411 is connected to a vacuum pumping device, and the vacuum pumping device 411 is connected to the vacuum pumping device 411. The vacuum tube 411 is connected to the atmosphere through a reversing valve, so that in actual use, the pressure state inside the vacuum adsorption disk 41 can be controlled by the vacuum tube 411. When the rubber edge 42 contacts the fiberboard and presses the fiberboard tightly, the vacuum tube 411 is used to evacuate the vacuum adsorption disk 41 to form a negative pressure, so that the fiberboard can be tightened and grasped to facilitate the tearing operation. After the detection is completed, the reversing valve is controlled to connect the vacuum tube 411 to the atmosphere, and the air re-enters the vacuum adsorption disk 41, so that the negative pressure adsorption of the vacuum adsorption disk 41 on the fiberboard can be released.

[0036] Furthermore, in the above technical solution, a pressure plate 43 is provided inside the vacuum adsorption plate 41, and the pressure plate 43 is fixedly connected to the vacuum adsorption plate 41 through a columnar structure. An inclined hole 431 is provided inside the pressure plate 43, and a pin 44 is slidably installed inside the inclined hole 431. A ball head 441 is fixedly connected to the top of the pin 44. A push plate 45 is also provided in the vacuum adsorption plate 41, and the push plate 45 is slidably installed on the outside of the columnar structure. A fork groove 451 is provided on the edge of the push plate 45, and the ball head 441 is slidably engaged with the inside of the fork groove 451. A sliding drive component is installed between the push plate 45 and the vacuum adsorption plate 41, and the sliding drive component drives the push plate 45 to reciprocate along the columnar component. In actual use, after the rubber edge 42 is close to the fiberboard, the pushing plate 45 is controlled to approach the pressure plate 43 during vacuum adsorption, so that the pin 44 can be pressed to insert into the surface of the fiberboard along the inclined hole 431. Figure 6 As shown, the pin 44 is inserted obliquely, which can further tighten the fiberboard, increase the gripping force of the gripping component 4 on the fiberboard, and ensure accurate detection.

[0037] Furthermore, in the above technical solution, if Figure 5 and Figure 6As shown, the sliding drive component is a normal pressure airbag 46, which is installed between the push plate 45 and the inner wall of the vacuum adsorption plate 41. The normal pressure airbag 46 is filled with normal pressure gas, and when the vacuum adsorption plate 41 is in a normal pressure state, the normal pressure airbag 46 is in a normal state. At this time, Figure 5 As shown, the pushing plate 45 is also located away from the pressure plate 43, and each pin 44 is also in a pulled-up state. When the vacuum adsorption plate 41 is in adsorption operation, the vacuum adsorption plate 41 is in a vacuum state. Since gas is stored in the normal-pressure airbag 46, when the outside is vacuum, the gas inside the normal-pressure airbag 46 will expand, thereby pushing the pushing plate 45 toward the pressure plate 43, thereby pressing the pin 44 tightly. After the adsorption is completed, the vacuum adsorption plate 41 returns to normal pressure, and the gas in the normal-pressure airbag 46 also returns to normal pressure, thereby pulling the pushing plate 45 back, and then through the vacuum control in the vacuum adsorption plate 41, the control of the pin 44 is synchronously realized, further improving the convenience and practicality of the use of the mechanism.

[0038] Working principle: By setting the grabbing component 4, the vacuum adsorption disc 41 and the rubber edge 42, and utilizing the vacuum control of the vacuum tube 411, the vacuum adsorption disc 41 forms a group of vacuum suction cups, and then when the rubber edge 42 contacts the fiberboard and presses the fiberboard tightly, the vacuum adsorption disc 41 is vacuumed to form negative pressure through the vacuum tube 411, so that the fiberboard can be tightened and grasped for the convenience of tearing operation, and by arranging a pressure disc 43 inside the vacuum adsorption disc 41, and obliquely installing the pin 44 in the pressure disc 43, and then controlling the pin 44 to be inserted downward by the push disc 45, the vacuum adsorption disc 41 is vacuumed to form negative pressure, so that the fiberboard can be tightened and grasped, so as to facilitate the tearing operation. When in vacuum, the expansion of the gas inside the normal-pressure airbag 46 is used to push the push plate 45 toward the pressure plate 43, so that the pin 44 can be pressed tightly, and the pin 44 is inserted into the surface of the fiberboard along the inclined hole 431, so as to further tighten the fiberboard, improve the gripping force of the grasping component 4 on the fiberboard, and ensure the accuracy of the detection. After the adsorption is completed, the vacuum adsorption plate 41 returns to normal pressure, and the gas in the normal-pressure airbag 46 also returns to normal pressure. The push plate 45 can be pulled back to separate the fiberboard, thereby ensuring that the mechanism can firmly adsorb and grasp the fiberboard, and at the same time, it further improves the convenience and practicality of the use of the mechanism.

[0039] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An interlayer peel strength testing device for fiberboard, comprising a frame (1), a grabbing frame (2) and a fixing frame (3), wherein the ends of the grabbing frame (2) and the fixing frame (3) are both equipped with grabbing components (4), and the grabbing components (4) are used to grab and absorb the fiberboard, and are characterized in that: The frame (1) is arranged vertically, a plate conveyor (7) is arranged in the middle of the frame (1), and the plate conveyor (7) conveys fiberboard in a horizontal direction. The fixed frame (3) is arranged in two groups, and the two groups of fixed frames (3) are arranged vertically in the same plane. The grabbing frame (2) is also arranged in two groups, and the two groups of grabbing frames (2) are movably installed on the side wall of the frame (1). A pressure sensor (22) is arranged between the grabbing frame (2) and the grabbing assembly (4); A hollow bearing area is provided in the middle of the sheet conveyor (7). After the two groups of grabbing frames (2) are turned vertically, they approach the fiberboard in the upper and lower spaces of the hollow bearing area of ​​the sheet conveyor (7) and absorb and grasp the fiberboard. When the two groups of grabbing frames (2) are kept vertically apart, the peeling strength between the fiberboard layers is measured for the first time. After the grabbing frame (2) is flipped to a horizontal state, it approaches the fixed frame (3), and the fiberboard carried by the grabbing frame (2) is secondarily adsorbed and grasped by the grabbing assembly (4) at the end of the fixed frame (3). When the two groups of grabbing frames (2) are respectively away from the two fixed frames (3), the interlayer peeling strength of the fiberboard is measured for the second time. The grabbing assembly (4) comprises a vacuum adsorption disc (41), a rubber edge (42) being fixedly connected to the edge of the vacuum adsorption disc (41), a vacuum pumping tube (411) being installed in the vacuum adsorption disc (41), an outer end of the vacuum pumping tube (411) being connected to a vacuum pumping device, and the vacuum pumping tube (411) being connected to the atmosphere via a reversing valve; A pressure plate (43) is arranged inside the vacuum adsorption plate (41), and the pressure plate (43) is fixedly connected to the vacuum adsorption plate (41) via a columnar structure. An inclined hole (431) is arranged inside the pressure plate (43), and a pin (44) is slidably mounted inside the inclined hole (431). A ball head (441) is fixedly connected to the top of the pin (44). A push plate (45) is also arranged in the vacuum adsorption plate (41), and the push plate (45) is slidably mounted outside the columnar structure. A fork groove (451) is provided on the edge of the push plate (45), and the ball head (441) is slidably engaged with the inside of the fork groove (451). A sliding drive component is arranged between the push plate (45) and the vacuum adsorption plate (41), and the sliding drive component drives the push plate (45) to move back and forth along the columnar component.

2. The interlayer peeling strength testing device for fiberboard according to claim 1, characterized in that: A support plate (11) is fixedly connected to a side of the frame (1) away from the plate conveyor (7); a transverse frame (5) is slidably mounted inside the support plate (11); a guide rod (51) is fixedly connected to one end of the transverse frame (5) close to the grabbing frame (2); the guide rod (51) is arranged vertically; a transverse support seat (6) is mounted on the outer side of the grabbing frame (2); the transverse support seat (6) is slidably sleeved with the guide rod (51); a guide column (21) is fixedly mounted inside the grabbing frame (2); the grabbing frame (2) is rotatably mounted on the transverse support seat (6) via the guide column (21); and a damping sleeve is arranged between the guide column (21) and the grabbing frame (2).

3. The interlayer peeling strength testing device for fiberboard according to claim 2, characterized in that: A transverse drive (52) is installed in the support plate (11), and the transverse drive (52) drives the transverse frame (5) to perform transverse reciprocating sliding motion. The transverse frame (5) uses one of an electric push rod, a hydraulic cylinder or a linear motor linear drive component.

4. The interlayer peeling strength testing device for fiberboard according to claim 2, characterized in that: The side wall of the frame (1) is provided with two groups of symmetrically arranged guide grooves (12) in an upper and lower manner, the guide grooves (12) comprising a horizontal groove (121), an end of the horizontal groove (121) close to the plate conveyor (7) is provided with an inclined groove (122), and one end of the guide column (21) extends into the guide groove (12) and is slidably matched with the horizontal groove (121) and the inclined groove (122).

5. The interlayer peeling strength testing device for fiberboard according to claim 4, characterized in that: The frame (1) is provided with rack plates (13) at positions outside the two guide grooves (12), and the rack plates (13) are arranged close to the horizontal groove (121). The outer wall of the grabbing frame (2) away from the grabbing assembly (4) is provided with gear teeth. When the guide column (21) slides along the horizontal groove (121) so that the grabbing frame (2) passes the rack plates (13), the grabbing frame (2) flips over.

6. The interlayer peeling strength testing device for fiberboard according to claim 1, characterized in that: The sliding drive component is a normal-pressure airbag (46), which is installed between the push plate (45) and the inner wall of the vacuum adsorption plate (41), and is filled with normal-pressure gas.

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