Paper tube compressive strength testing device and use method thereof

Abstract

The invention relates to the technical field of paper tube detection equipment, and discloses a paper tube compressive strength testing device and a use method thereof.The paper tube compressive strength testing device comprises an equipment base, a plurality of supporting legs are fixedly connected to the bottom of the equipment base, a plurality of sliding grooves are formed in the top of the equipment base, and a testing box is slidably connected into the sliding grooves. According to the paper tube testing device, an upper moving plate drives a paper tube in a first fixing cylinder to move upwards, meanwhile, a rotating rod drives a lower moving plate on the rotating rod to move downwards, and the lower moving plate drives a second fixing cylinder to move downwards; therefore, the upward moving distance of the first fixing cylinder is equal to the descending distance of the second fixing cylinder until the top end of the paper tube enters the second fixing cylinder, so that on one hand, the two ends of the paper tubes with different lengths can be fixed, and on the other hand, the midpoints of the paper tubes with different lengths can be aligned with the test hydraulic rod; therefore, the stress point of the paper tube is located at the middle point of the paper tube, and the test data is ensured to be more accurate.

Description

Technical Field

[0001] The present invention relates to the technical field of paper tube testing equipment, and in particular to a paper tube compressive strength testing device and a use method thereof. Background Art

[0002] The paper tube compressive strength test device is a device used to evaluate the pressure-bearing capacity of paper tubes. It is widely used in paper tube production, quality control, and transportation packaging. It simulates the actual compression load that the paper tube is subjected to during use to measure its compressive strength, ensuring that the paper tube can meet the requirements during transportation, storage, and use.

[0003] Most of the paper tube compressive strength testing devices under the existing technology can meet the requirements of pressure testing. When the paper tube is under pressure testing, the test hydraulic mechanism needs to apply pressure to the side wall of the paper tube. Since paper tubes of different lengths are subjected to force in different positions during the test, the test data cannot be directly compared horizontally. Therefore, for paper tubes of different lengths, the test hydraulic mechanism should be uniformly aligned with the center points of different paper tubes so that the test data can be directly compared horizontally. Summary of the invention

[0004] The object of the present invention is to provide a paper tube compressive strength testing device and a method of using the same to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention provides a paper tube compressive strength testing device and a method for using the same, comprising a device base, a plurality of supporting legs being fixedly connected to the bottom of the device base, a plurality of slide grooves being provided on the top of the device base, a test box being slidably connected inside the slide grooves, a control panel being provided on the side of the test box, a test hydraulic rod being provided inside the test box, a plurality of support frames being fixedly connected to the top of the device base, a top support plate being fixedly connected to one end of the support frame away from the device base, and further comprising:

[0007] The centering test mechanism includes a plurality of positioning holes opened at the bottom of the slide groove, a plurality of pin holes opened at the bottom of the test box, a driving motor is fixedly connected to the bottom of the equipment base, a threaded rod is fixedly connected to the output end of the driving motor, a plurality of limit sliding rods are fixedly connected to the bottom of the equipment base, and a moving platform is rotatably connected to one end of the threaded rod away from the driving motor.

[0008] Furthermore, the centering test mechanism also includes a plurality of rotating rods rotatably connected to the mobile platform, a plurality of threaded grooves are opened on the rotating rods, a gear is fixedly connected to the bottom of the rotating rods, a plurality of racks are fixedly connected to the bottom of the equipment base, the gears are meshed with the racks, an upper moving plate is rotatably connected in the threaded groove on the rotating rods, a fixed cylinder 1 is fixedly connected just above the upper moving plate, a lower moving plate is rotatably connected in the threaded groove at one end of the rotating rod away from the upper moving plate, a sliding block is rotatably connected to the top of the rotating rod, the sliding block is slidably connected to the top support plate, and a fixed cylinder 2 is fixedly connected to the bottom of the lower moving plate.

[0009] Furthermore, a straightening mechanism is arranged directly above the moving platform, and the straightening mechanism includes a plurality of extrusion rods fixedly connected directly above the moving platform, an extrusion groove is provided at one end of the extrusion rod close to the fixed cylinder, a plurality of limit rods are fixedly connected to the side wall of the fixed cylinder, and a return spring is sleeved on the limit rod.

[0010] Furthermore, the straightening mechanism also includes a connecting rod slidably connected to the end of the limit rod away from the fixed cylinder, both ends of the connecting rod are fixedly connected with extrusion telescopic rods, the end of the extrusion telescopic rod away from the fixed cylinder is squeezed by the extrusion groove on the extrusion rod, the end of the extrusion telescopic rod close to the fixed cylinder is provided with an extrusion spring, and the end of the extrusion telescopic rod close to the fixed cylinder is fixedly connected to the straightening arc rod.

[0011] Furthermore, a fixing mechanism is provided inside the fixed cylinder 1 and the fixed cylinder 2, and the fixing mechanism includes a plurality of telescopic rods 1 fixedly connected to the upper part of the upper moving plate, a telescopic spring is sleeved on one end of the telescopic rod 1 away from the upper moving plate, a sliding disk is fixedly connected to one end of the telescopic rod 1 away from the upper moving plate, and the sliding disk is slidably connected to the inner wall of the fixed cylinder 1.

[0012] Furthermore, the fixing mechanism also includes a plurality of fixing grooves opened on the sliding disk, a sliding block is slidably connected inside the fixing groove, a fixed telescopic rod is rotatably connected to the bottom of the sliding block, an end of the fixed telescopic rod away from the sliding block is rotatably connected to the inner wall of the fixed cylinder, and the top of the sliding block is fixedly connected to the outer wall clamping plate.

[0013] Furthermore, auxiliary mechanisms are provided inside the fixed cylinder one and the fixed cylinder two, and the auxiliary mechanisms include a limit column fixedly connected to the top of the sliding disk, a plurality of clearance grooves are opened on the side walls of the limit column, a connecting rod one is rotatably connected inside the clearance groove, an end of the connecting rod one away from the clearance groove is rotatably connected to an inner wall clamping piece, a side of the inner wall clamping piece close to the connecting rod one is rotatably connected to a connecting rod two, a telescopic rod two is fixedly connected to the top of the upper moving plate, the top of the telescopic rod two is slidably connected to the inside of the limit column, and the top of the telescopic rod two is rotatably connected to a plurality of connecting rods two.

[0014] A method for using a paper tube compressive strength testing device comprises the following steps:

[0015] Step 1: Align the test paper tube;

[0016] Step 2: Straighten the test paper tube;

[0017] Step 3: Fix the test paper tube.

[0018] The present invention has the following beneficial effects:

[0019] (1) According to the present invention, when the paper tube compressive strength testing device is used, the paper tube to be tested is first placed in a fixed tube. At this time, the driving motor is started, and the output end of the driving motor rotates to drive the threaded rod to rotate. The threaded rod rotates to drive the movable platform to move along the limit slide bar toward one end of the test hydraulic rod. The movable platform drives the rotating rod to move toward one end of the test hydraulic rod. At this time, the gear at the bottom of the rotating rod is meshed with the rack. The rotating rod rotates during the movement. The rotation of the rotating rod drives the upper moving plate on the rotating rod to move upward along the rotating rod. The upper moving plate drives the paper tube in the fixed tube to move upward. At the same time, the rotating rod drives the lower moving plate on the rotating rod to move downward. The lower moving plate belt The movable fixed cylinder II moves downward. Since the two threaded grooves on the rotating rod are symmetrically arranged about the axis center of the test hydraulic rod, the upward movement distance of the fixed cylinder I is equal to the downward movement distance of the fixed cylinder II, until the top end of the paper tube enters the fixed cylinder II. This arrangement is beneficial for fixing the two ends of paper tubes of different lengths on the one hand, and for aligning the midpoints of paper tubes of different lengths with the test hydraulic rod on the other hand, so that the force point of the paper tube is located at the midpoint of the paper tube, ensuring that the test data is more accurate; when the top end of the paper tube enters the fixed cylinder II, the driving motor stops rotating. At this time, the position of the test box is adjusted, and then the latch is inserted into the positioning hole through the latch hole to fix the test box inside the slide groove.

[0020] (2) The present invention provides a straightening mechanism. When the gear rotates to drive the rotating rod to rotate, and the rotating rod rotates to drive the fixed cylinder 1 on the upper moving plate to move upward, the fixed cylinder 1 drives the limiting rod to move upward. The limiting rod moves upward to drive a plurality of extrusion and telescopic rods on the connecting rod to move upward. The extrusion and telescopic rods move upward to be extruded by the extrusion grooves on the extrusion rods. Under the extrusion action of the extrusion grooves, the extrusion and telescopic rods slide along the limiting rods toward the inside of the fixed cylinder 1. At this time, the connecting rods squeeze the connecting rods along the limiting rods. The extrusion and telescopic rods drive the straightening arc rods to be extruded toward the outer wall close to the paper tube. This arrangement is beneficial to the straightening arc rods to initially fix the bottom of the paper tube, and is beneficial to the plurality of straightening arc rods to straighten the paper tube, so that the top of the paper tube can smoothly enter the inside of the fixed cylinder 2.

[0021] (3) The present invention sets a fixing mechanism. When the top end of the paper tube enters the interior of the fixed tube two, the top end of the paper tube is pressed against the sliding disk inside the fixed tube two. At this time, the bottom of the paper tube is pressed against the sliding disk inside the fixed tube one. The sliding disk is pressed downward along the fixed tube one to press the telescopic rod one. The sliding disk moves downward to drive the slider at one end of the fixed telescopic rod to move circularly along the fixed groove toward the sliding disk. At this time, the slider drives the outer wall clamping piece to move toward the outer wall of the paper tube. At this time, the outer wall clamping piece is pressed against the outer wall of the paper tube. Such a setting is conducive to fixing the two ends of the paper tube by the outer wall clamping piece, thereby ensuring that the paper tube remains stable during the strength test, thereby making the test data more accurate.

[0022] (4) The present invention sets an auxiliary mechanism. When the sliding plate is squeezed by the paper tube and moves downward, the limit column located inside the paper tube moves downward with the sliding plate. At this time, the limit column and the top of the telescopic rod 2 produce relative displacement. The top of the telescopic rod 2 slides upward along the inner wall of the limit column. The top of the telescopic rod 2 drives the inner wall clamping pieces at one end of the plurality of connecting rods 2 to move toward the inner wall of the paper tube. When the driving motor stops rotating, one side of the inner wall clamping piece is clamped with the inner wall of the paper tube. This arrangement is beneficial to assist in fixing the two ends of the paper tube on the one hand, and is beneficial to improving the strength of the two ends of the paper tube on the other hand, avoiding excessive squeezing force of the fixing mechanism on the outer wall of the paper tube, thereby avoiding damage to the two ends of the paper tube due to excessive squeezing force of the outer wall clamping piece in the fixing mechanism. This arrangement is beneficial to ensuring the stability of the detection of the device.

[0023] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a structural schematic diagram of another viewing angle of the present invention as a whole;

[0027] Figure 3 It is a structural schematic diagram of the centering test mechanism of the present invention;

[0028] Figure 4 It is a schematic diagram of the partial structure of the centering test mechanism of the present invention;

[0029] Figure 5 For the present invention Figure 4A magnified view of middle;

[0030] Figure 6 It is a schematic diagram of the structure of the righting mechanism of the present invention;

[0031] Figure 7 For the present invention Figure 6 Enlarged view of middle B;

[0032] Figure 8 It is a schematic diagram of the fixing mechanism structure of the present invention;

[0033] Fig. 9 For the present invention Figure 8 Enlarged view of middle C;

[0034] Fig.10 It is a schematic diagram of the auxiliary mechanism structure of the present invention;

[0035] Fig.11 For the present invention Fig.10 Enlarged view of middle D;

[0036] Fig.12 The figure is a flow chart of the method for using the present invention.

[0037] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0038] In the figure: 1. Equipment base; 11. Support legs; 12. Slide; 13. Test box; 14. Control panel; 15. Test hydraulic rod; 16. Support frame; 17. Top support plate; 2. Centering test mechanism; 201. Positioning hole; 202. Pin hole; 203. Drive motor; 204. Threaded rod; 205. Limiting slide rod; 206. Moving platform; 207. Rotating rod; 208. Gear; 209. Rack; 210. Upper moving plate; 211. Fixed cylinder 1; 212. Lower moving plate; 213. Sliding block; 214. Fixed cylinder 2; 3. Righting mechanism; 3 01. Extrusion rod; 302. Extrusion groove; 303. Limit rod; 304. Reset spring; 305. Connecting rod; 306. Extrusion telescopic rod; 307. Extrusion spring; 308. Arc straightening rod; 4. Fixing mechanism; 401. Telescopic rod one; 402. Telescopic spring; 403. Sliding plate; 404. Fixing groove; 405. Sliding block; 406. Fixed telescopic rod; 407. Outer wall clamping piece; 5. Auxiliary mechanism; 501. Limiting column; 502. Displacement groove; 503. Linking rod one; 504. Inner wall clamping piece; 505. Linking rod two; 506. Telescopic rod two. DETAILED DESCRIPTION

[0039] 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.

[0040] Example 1, please refer to Figure 1-Figure 7 As shown, the present invention is a paper tube compressive strength testing device and a method for using the same, comprising a device base 1, a plurality of supporting legs 11 are fixedly connected to the bottom of the device base 1, a plurality of slide grooves 12 are provided on the top of the device base 1, a test box 13 is slidably connected inside the slide groove 12, a control panel 14 is provided on the side of the test box 13, a test hydraulic rod 15 is provided inside the test box 13, a plurality of support frames 16 are fixedly connected to the top of the device base 1, and a top support plate 17 is fixedly connected to one end of the support frame 16 away from the device base 1, and further comprising:

[0041] The centering test mechanism 2 includes a plurality of positioning holes 201 opened at the bottom of the slide groove 12, a plurality of pin holes 202 opened at the bottom of the test box 13, a driving motor 203 is fixedly connected to the bottom of the equipment base 1, a threaded rod 204 is fixedly connected to the output end of the driving motor 203, a plurality of limiting slide rods 205 are fixedly connected to the bottom of the equipment base 1, and a moving platform 206 is rotatably connected to the end of the threaded rod 204 away from the driving motor 203.

[0042] The centering test mechanism 2 also includes a plurality of rotating rods 207 rotatably connected to the mobile platform 206, a plurality of threaded grooves are provided on the rotating rods 207, a gear 208 is fixedly connected to the bottom of the rotating rods 207, a plurality of racks 209 are fixedly connected to the bottom of the equipment base 1, the gears 208 are meshed with the racks 209, an upper moving plate 210 is rotatably connected in the threaded groove on the rotating rods 207, a fixed cylinder 211 is fixedly connected just above the upper moving plate 210, a lower moving plate 212 is rotatably connected in the threaded groove at one end of the rotating rods 207 away from the upper moving plate 210, and the top of the rotating rods 207 is rotatably connected to the lower moving plate 212. A sliding block 213 is connected, and the sliding block 213 is slidably connected to the top support plate 17. The bottom of the lower plate 212 is fixedly connected to a fixed cylinder 214. The function of this component is that when the paper tube compressive strength test device is used, the paper tube to be tested is first placed in the fixed cylinder 1 211, and the drive motor 203 is started at this time. The output end of the drive motor 203 rotates to drive the threaded rod 204 to rotate, and the threaded rod 204 rotates to drive the moving platform 206 to move along the limit sliding rod 205 to one end close to the test hydraulic rod 15, and the moving platform 206 drives the rotating rod 207 to move to one end close to the test hydraulic rod 15 At this time, the gear 208 at the bottom of the rotating rod 207 is meshed with the rack 209, and the rotating rod 207 rotates during the movement. The rotation of the rotating rod 207 drives the upper plate 210 on the rotating rod 207 to move upward along the rotating rod 207, and the upper plate 210 drives the paper tube in the fixed cylinder 1 211 to move upward. At the same time, the rotating rod 207 drives the lower plate 212 on the rotating rod 207 to move downward, and the lower plate 212 drives the fixed cylinder 214 to move downward. Since the two thread grooves on the rotating rod 207 are symmetrically arranged about the axis center of the test hydraulic rod 15, the fixed cylinder 1 211 moves upward. The distance is equal to the distance that the fixed cylinder 214 descends, until the top end of the paper tube enters the fixed cylinder 214. This arrangement is beneficial for fixing the two ends of paper tubes of different lengths on the one hand, and on the other hand, it is beneficial for aligning the midpoints of paper tubes of different lengths with the test hydraulic rod 15, so that the force point of the paper tube is located at the midpoint of the paper tube, ensuring that the test data is more accurate; when the top end of the paper tube enters the fixed cylinder 214, the drive motor 203 stops rotating, and the position of the test box 13 is adjusted at this time, and then the pin is inserted into the positioning hole 201 through the pin hole 202 to fix the test box 13 inside the slide groove 12.

[0043] A straightening mechanism 3 is arranged directly above the moving platform 206, and the straightening mechanism 3 includes a plurality of extrusion rods 301 fixedly connected directly above the moving platform 206, an extrusion groove 302 is provided at one end of the extrusion rod 301 close to the fixed cylinder 211, a plurality of limiting rods 303 are fixedly connected to the side wall of the fixed cylinder 211, and a return spring 304 is sleeved on the limiting rod 303.

[0044] The straightening mechanism 3 also includes a connecting rod 305 slidably connected to the end of the limiting rod 303 away from the fixed cylinder 211, and both ends of the connecting rod 305 are fixedly connected with an extrusion telescopic rod 306, and the end of the extrusion telescopic rod 306 away from the fixed cylinder 211 is squeezed with the extrusion groove 302 on the extrusion rod 301, and the end of the extrusion telescopic rod 306 close to the fixed cylinder 211 is sleeved with an extrusion spring 307, and the end of the extrusion telescopic rod 306 close to the fixed cylinder 211 is fixedly connected with a straightening arc rod 308. The function of this component is to set the straightening mechanism 3, when the gear 208 rotates to drive the rotating rod 207 to rotate, and the rotating rod 207 rotates to drive the fixed cylinder 211 on the upper plate 210 to move upward, the fixed cylinder 211 drives the limiting rod 3 03 moves upward, the limit rod 303 moves upward to drive several extrusion telescopic rods 306 on the connecting rod 305 to move upward, the extrusion telescopic rod 306 moves upward to be extruded by the extrusion groove 302 on the extrusion rod 301, under the extrusion action of the extrusion groove 302, the extrusion telescopic rod 306 slides along the limit rod 303 to the inside of the fixed tube 211, at this time, the connecting rod 305 squeezes the connecting rod 305 along the limit rod 303, and the extrusion telescopic rod 306 drives the straightening arc rod 308 to be squeezed toward the outer wall close to the paper tube. Such a setting is beneficial to the straightening arc rod 308 to initially fix the bottom of the paper tube on the one hand, and is beneficial to several straightening arc rods 308 to straighten the paper tube on the other hand, so that the top of the paper tube can smoothly enter the inside of the fixed tube 214.

[0045] Embodiment 2 is different from Embodiment 1 in that: Figure 1-Figure 12 As shown, a fixing mechanism 4 is provided inside the fixed cylinder 1 211 and the fixed cylinder 214, and the fixing mechanism 4 includes a plurality of telescopic rods 1 401 fixedly connected to the upper part of the upper moving plate 210, and a telescopic spring 402 is sleeved on one end of the telescopic rod 1 401 away from the upper moving plate 210, and a sliding plate 403 is fixedly connected to one end of the telescopic rod 1 401 away from the upper moving plate 210, and the sliding plate 403 is slidably connected to the inner wall of the fixed cylinder 1 211.

[0046] The fixing mechanism 4 also includes a plurality of fixing grooves 404 provided on the sliding plate 403, wherein a slider 405 is slidably connected inside the fixing groove 404, and a fixed telescopic rod 406 is rotatably connected to the bottom of the slider 405, and one end of the fixed telescopic rod 406 away from the slider 405 is rotatably connected to the inner wall of the fixed cylinder 1 211, and the top of the slider 405 is fixedly connected to the outer wall clamping piece 407. The function of this component is that by setting the fixing mechanism 4, when the top end of the paper tube enters the inside of the fixed cylinder 214, the top end of the paper tube is squeezed with the sliding plate 403 inside the fixed cylinder 214, and at this time, the bottom of the paper tube is pressed against the fixed cylinder 1 The sliding plate 403 inside 211 is squeezed, and the sliding plate 403 is squeezed downward along the fixed cylinder 211 to squeeze the telescopic rod 401. The sliding plate 403 moves downward to drive the slider 405 at one end of the fixed telescopic rod 406 to move circularly along the fixed groove 404 toward the sliding plate 403. At this time, the slider 405 drives the outer wall clamping piece 407 to move toward the outer wall of the paper tube. At this time, the outer wall clamping piece 407 is squeezed with the outer wall of the paper tube. This arrangement is conducive to the outer wall clamping piece 407 fixing the two ends of the paper tube, thereby ensuring that the paper tube remains stable during the strength test, thereby making the test data more accurate.

[0047] The interior of the fixed cylinder 1 211 and the fixed cylinder 214 are both provided with auxiliary mechanisms 5, and the auxiliary mechanisms 5 include a limiting column 501 fixedly connected to the top of the sliding disk 403, and the side wall of the limiting column 501 is provided with a plurality of making way grooves 502, and the interior of the making way groove 502 is rotatably connected with a connecting rod 1 503, and the end of the connecting rod 1 503 away from the making way groove 502 is rotatably connected with an inner wall clamping piece 504, and the side of the inner wall clamping piece 504 close to the connecting rod 1 503 is rotatably connected with a connecting rod 2 505, and the top of the upper moving plate 210 is fixedly connected with a telescopic rod 2 506, and the top of the telescopic rod 2 506 is slidably connected to the interior of the limiting column 501, and the top of the telescopic rod 2 506 is rotatably connected to a plurality of connecting rods 2 505. The function of this component is to set the auxiliary mechanism 5, when the sliding disk 403 is squeezed downward by the paper tube During movement, the limiting column 501 located inside the paper tube moves downward with the sliding disk 403. At this time, the limiting column 501 and the top of the telescopic rod 506 generate relative displacement. The top of the telescopic rod 506 slides upward along the inner wall of the limiting column 501. The top of the telescopic rod 506 drives the inner wall clamping pieces 504 at one end of the plurality of connecting rods 505 to move toward the inner wall of the paper tube. When the driving motor 203 stops rotating, one side of the inner wall clamping piece 504 is clamped with the inner wall of the paper tube. This arrangement is beneficial to assisting in fixing the two ends of the paper tube on the one hand, and is beneficial to improving the strength of the two ends of the paper tube on the other hand, avoiding excessive squeezing force of the fixing mechanism 4 on the outer wall of the paper tube, thereby avoiding damage to the two ends of the paper tube due to excessive squeezing force of the outer wall clamping piece 407 in the fixing mechanism 4. This arrangement is beneficial to ensuring the stability of the detection of the device.

[0048] A method for using a paper tube compressive strength testing device comprises the following steps:

[0049] Step 1: Align the test paper tube;

[0050] Step 2: Straighten the test paper tube;

[0051] Step 3: Fix the test paper tube.

[0052] A specific application of this embodiment is:

[0053] When using the paper tube compressive strength testing device, first put the paper tube to be tested into the fixed tube 211, then start the driving motor 203, the output end of the driving motor 203 rotates to drive the threaded rod 204 to rotate, the threaded rod 204 rotates to drive the moving platform 206 to move along the limiting slide bar 205 to the end close to the test hydraulic rod 15, the moving platform 206 drives the rotating rod 207 to move to the end close to the test hydraulic rod 15, at this time, the gear 208 at the bottom of the rotating rod 207 is meshed with the rack 209, the rotating rod 207 rotates during the movement, and the rotation of the rotating rod 207 drives the upper moving plate 210 on the rotating rod 207 to move along the rotating rod 207 The movable rod 207 moves upward, and the upward plate 210 drives the paper tube in the fixed tube 1 211 to move upward. At the same time, the rotating rod 207 drives the downward plate 212 on the rotating rod 207 to move downward, and the downward plate 212 drives the fixed tube 214 to move downward. Since the two thread grooves on the rotating rod 207 are symmetrically arranged about the axis center of the test hydraulic rod 15, the upward movement distance of the fixed tube 1 211 is equal to the downward movement distance of the fixed tube 214, until the top of the paper tube enters the fixed tube 214. This arrangement is conducive to fixing the two ends of paper tubes of different lengths on the one hand, and on the other hand, it is conducive to aligning the midpoints of paper tubes of different lengths with the test hydraulic rod 15. Thereby, the force point of the paper tube is located at the midpoint of the paper tube, ensuring that the test data is relatively accurate; when the top end of the paper tube enters the interior of the fixed tube 214, the driving motor 203 stops rotating, at this time, the position of the test box 13 is adjusted, and then the latch is inserted into the positioning hole 201 through the latch hole 202 to fix the test box 13 in the slide slot 12; by setting the straightening mechanism 3, when the gear 208 rotates to drive the rotating rod 207 to rotate, the rotating rod 207 rotates to drive the fixed tube 1 211 on the upper plate 210 to move upward, the fixed tube 1 211 drives the limit rod 303 to move upward, and the limit rod 303 moves upward to drive several on the connecting rod 305 The extrusion telescopic rod 306 moves upward, and the extrusion telescopic rod 306 moves upward to be extruded with the extrusion groove 302 on the extrusion rod 301. Under the extrusion effect of the extrusion groove 302, the extrusion telescopic rod 306 slides along the limit rod 303 to the inside of the fixed tube 1 211. At this time, the connecting rod 305 squeezes the connecting rod 305 along the limit rod 303, and the extrusion telescopic rod 306 drives the straightening arc rod 308 to be squeezed toward the outer wall close to the paper tube. This arrangement is conducive to the straightening arc rod 308 to initially fix the bottom of the paper tube, and is conducive to a plurality of straightening arc rods 308 to straighten the paper tube, so that the top of the paper tube smoothly enters the inside of the fixed tube 214;

[0054] By setting the fixing mechanism 4, when the top end of the paper tube enters the interior of the second fixed cylinder 214, the top end of the paper tube is pressed against the sliding disk 403 inside the second fixed cylinder 214, and at this time, the bottom of the paper tube is pressed against the sliding disk 403 inside the first fixed cylinder 211, and the sliding disk 403 is pressed downward along the first fixed cylinder 211 to press the telescopic rod 1 401, and the sliding disk 403 moves downward to drive the slider 405 at one end of the fixed telescopic rod 406 to move circularly along the fixed groove 404 toward the sliding disk 403, and at this time, the slider 405 drives the outer wall clamping piece 407 to move toward the outer wall of the paper tube, and at this time, the outer wall clamping piece 407 is pressed against the outer wall of the paper tube, so that this arrangement is conducive to the outer wall clamping piece 407 fixing the two ends of the paper tube, thereby ensuring that the paper tube remains stable during the strength test, so that the test data is more accurate; by setting the auxiliary mechanism 5, when the sliding When the movable plate 403 is squeezed and moved downward by the paper tube, the limiting column 501 located inside the paper tube moves downward with the sliding plate 403. At this time, the limiting column 501 and the top of the telescopic rod 506 produce relative displacement, and the top of the telescopic rod 506 slides upward along the inner wall of the limiting column 501. The top of the telescopic rod 506 drives the inner wall clamping pieces 504 at one end of the plurality of connecting rods 505 to move toward the inner wall of the paper tube. When the driving motor 203 stops rotating, one side of the inner wall clamping piece 504 is clamped with the inner wall of the paper tube. This arrangement is beneficial to auxiliary fixing of the two ends of the paper tube on the one hand, and is beneficial to improving the strength of the two ends of the paper tube on the other hand, avoiding excessive squeezing force of the fixing mechanism 4 on the outer wall of the paper tube, thereby avoiding damage to the two ends of the paper tube caused by excessive squeezing force of the outer wall clamping piece 407 in the fixing mechanism 4. This arrangement is beneficial to ensuring the stability of the detection of the device.

[0055] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A paper tube compressive strength testing device, comprising a device base (1), the bottom of the device base (1) is fixedly connected to a plurality of support legs (11), the top of the device base (1) is provided with a plurality of slide grooves (12), the inside of the slide grooves (12) is slidably connected to a test box (13), the side of the test box (13) is provided with a control panel (14), the inside of the test box (13) is provided with a test hydraulic rod (15), the top of the device base (1) is fixedly connected to a plurality of support frames (16), and the end of the support frame (16) away from the device base (1) is fixedly connected to a top support plate (17), characterized in that: Also includes: A centering test mechanism (2), the centering test mechanism (2) comprising a plurality of positioning holes (201) provided at the bottom of a slide groove (12), a plurality of latch holes (202) provided at the bottom of the test box (13), a drive motor (203) fixedly connected to the bottom of the device base (1), a threaded rod (204) fixedly connected to the output end of the drive motor (203), a plurality of limit sliding rods (205) fixedly connected to the bottom of the device base (1), and a moving platform (206) rotatably connected to one end of the threaded rod (204) away from the drive motor (203).

2. A paper tube compressive strength testing device according to claim 1, characterized in that: The centering test mechanism (2) further comprises a plurality of rotating rods (207) rotatably connected to the moving platform (206), the rotating rods (207) being provided with a plurality of threaded grooves, the bottom of the rotating rods (207) being fixedly connected with a gear (208), the bottom of the equipment base (1) being fixedly connected with a plurality of racks (209), the gears (208) being meshed with the racks (209), the threaded grooves on the rotating rods (207) being rotatably connected with a gear (208), and the gears (208) being meshed with the racks (209). An upper moving plate (210), a fixed cylinder 1 (211) is fixedly connected directly above the upper moving plate (210), a lower moving plate (212) is rotatably connected in a threaded groove at one end of the rotating rod (207) away from the upper moving plate (210), a sliding block (213) is rotatably connected at the top of the rotating rod (207), the sliding block (213) is slidably connected to the top support plate (17), and a fixed cylinder 2 (214) is fixedly connected at the bottom of the lower moving plate (212).

3. A paper tube compressive strength testing device according to claim 2, characterized in that: A straightening mechanism (3) is arranged directly above the moving platform (206), and the straightening mechanism (3) comprises a plurality of extrusion rods (301) fixedly connected to the moving platform (206), an extrusion groove (302) is provided at one end of the extrusion rod (301) close to the fixed cylinder (211), and a plurality of limiting rods (303) are fixedly connected to the side wall of the fixed cylinder (211), and a return spring (304) is sleeved on the limiting rod (303).

4. A paper tube compressive strength testing device according to claim 3, characterized in that: The straightening mechanism (3) further comprises a connecting rod (305) slidably connected to an end of the limiting rod (303) away from the fixed cylinder (211); both ends of the connecting rod (305) are fixedly connected to extrusion telescopic rods (306); the end of the extrusion telescopic rod (306) away from the fixed cylinder (211) is pressed against an extrusion groove (302) on the extrusion rod (301); an extrusion spring (307) is sleeved on the end of the extrusion telescopic rod (306) close to the fixed cylinder (211); and an arc straightening rod (308) is fixedly connected to the end of the extrusion telescopic rod (306) close to the fixed cylinder (211).

5. A paper tube compressive strength testing device according to claim 4, characterized in that: The fixing tube one (211) and the fixing tube two (214) are both provided with a fixing mechanism (4) inside, and the fixing mechanism (4) includes a plurality of telescopic rods (401) fixedly connected to the upper part of the upper moving plate (210), and a telescopic spring (402) is sleeved on one end of the telescopic rod (401) away from the upper moving plate (210), and a sliding plate (403) is fixedly connected to one end of the telescopic rod (401) away from the upper moving plate (210), and the sliding plate (403) is slidably connected to the inner wall of the fixing tube one (211).

6. A paper tube compressive strength testing device according to claim 5, characterized in that: The fixing mechanism (4) further comprises a plurality of fixing grooves (404) provided on the sliding plate (403), wherein a sliding block (405) is slidably connected inside the fixing groove (404), a fixed telescopic rod (406) is rotatably connected to the bottom of the sliding block (405), an end of the fixed telescopic rod (406) away from the sliding block (405) is rotatably connected to the inner wall of the fixing cylinder (211), and an outer wall clamping piece (407) is fixedly connected to the top of the sliding block (405).

7. A paper tube compressive strength testing device according to claim 6, characterized in that: Auxiliary mechanisms (5) are provided inside the fixed cylinder 1 (211) and the fixed cylinder 2 (214), and the auxiliary mechanisms (5) include a limiting column (501) fixedly connected to the top of the sliding plate (403), a plurality of clearance grooves (502) are provided on the side wall of the limiting column (501), a connecting rod 1 (503) is rotatably connected inside the clearance groove (502), an end of the connecting rod 1 (503) away from the clearance groove (502) is rotatably connected to an inner wall clamping piece (504), and a side of the inner wall clamping piece (504) close to the connecting rod 1 (503) is rotatably connected to a connecting rod 2 (505), and a telescopic rod 2 (506) is fixedly connected to the top of the upper moving plate (210), and the top of the telescopic rod 2 (506) is slidably connected to the inside of the limiting column (501), and the top of the telescopic rod 2 (506) is rotatably connected to a plurality of connecting rods 2 (505).

8. A method for using a paper tube compressive strength testing device, using the paper tube compressive strength testing device as claimed in claim 7, characterized in that: It includes the following steps: Step 1: Align the test paper tube; Step 2: Straighten the test paper tube; Step 3: Fix the test paper tube.

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