Simulation wear resistance detector for printing ink

Abstract

The invention provides a printing ink simulation wear resistance detector which comprises an instrument base, a detection table is arranged on the top surface of the instrument base, a control table is connected to one side of the top surface of the detection table, symmetrical pressing and fixing assemblies are arranged on the two sides, away from the control table, of the top surface of the detection table, and a pressure adjusting table is arranged at the position, between the pressing and fixing assemblies, of the top surface of the detection table. A sliding friction block is arranged on the top face of the pressure adjusting table, a driving part is arranged at the position, connected with the detection table and the control table, of the instrument base, and the driving part is in transmission connection with the pressing and fixing assembly, the pressure adjusting table and the sliding friction block. A product packaging box placed on the top face of the detection table can be automatically fixed, wear resistance detection of the detector is completed, meanwhile, before use, the friction force between the detection table and the sliding friction block can be freely adjusted and controlled by rotating the pressure adjusting driving button according to the friction force needed by detection, and the multi-pressure detection function of the detector is improved.

Description

Technical Field

[0001] The invention relates to the field of printing ink wear resistance detection, in particular to a printing ink simulation wear resistance detector. Background Art

[0002] Printing ink simulation wear tester is a device specially used to evaluate the wear resistance of the ink layer of printed products. This tester can simulate the friction and wear conditions in actual use, so as to evaluate the friction resistance and decolorization performance of the ink. Printing ink simulation wear tester is commonly used in the printing industry, coating industry, textile industry, and plastic industry. It is generally used for friction and wear resistance tests on various product packaging boxes.

[0003] The use of the printing ink simulation wear resistance tester is to fix the friction surface of the packaging box on the test table and the surface of the reciprocating friction block respectively. The driving mechanism drives the friction block to slide reciprocatingly to make the two packaging boxes rub against each other. However, when the packaging box is fixed to the test table, the traditional tester needs to manually fix the two ends of the packaging box, which is cumbersome and time-consuming.

[0004] Therefore, we made improvements on this and proposed a printing ink simulation wear resistance tester. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that the existing detectors cannot automatically fix the packaging box.

[0006] In order to achieve the above-mentioned purpose of the invention, the present invention provides the following printing ink simulation wear resistance tester to improve the above-mentioned problem.

[0007] The specific application is as follows: A printing ink simulation wear resistance tester comprises an instrument base, a test platform is provided on the top surface of the instrument base, a control panel is connected to one side of the top surface of the test platform, symmetrical pressing components are provided on both sides of the top surface of the test platform away from the control panel, a pressure regulating platform is provided on the top surface of the test platform between the pressing components, a sliding friction block is provided on the top surface of the pressure regulating platform, a driving part is provided at the position where the instrument base connects the test platform and the control panel, the driving part is respectively connected to the pressing component, the pressure regulating platform and the sliding friction block, and symmetrical pressure regulating driving buttons are connected to the upper front side of the instrument base, and the pressure regulating driving buttons are connected to the driving part.

[0008] As a preferred technical solution of the present application, the driving part includes a reciprocating driving group, which is located on the lower side of the middle part of the control panel, and a compression transmission group is provided on both sides of the bottom of the reciprocating driving group, and the compression transmission group is transmission-connected with the reciprocating driving group, and one end of the compression transmission group is passed through under the compression component, and the compression transmission group is transmission-connected with the compression component, and a press-platform transmission group is provided at a position below the compression component, and the press-platform transmission group is transmission-connected with the compression transmission group, and the press-platform transmission group slides on the inner side of the detection platform, and one end of the press-platform transmission group away from the compression transmission group is located on both sides of the lower part of the pressure regulating platform, and a symmetrical height adjustment group is provided at the position of the press-platform transmission group at the lower part of the pressure regulating platform, and the height adjustment group abuts against the top surface of the pressure regulating platform.

[0009] As a preferred technical solution of the present application, the reciprocating drive group includes a driving wheel, which is rotatably connected to the middle part of the inner side of the control panel, and a driving rod is connected to a side of the driving wheel close to the detection platform, and the driving rod is fixed on one side of the driving wheel. A driven groove rod is provided for sliding in a limited position near the driving rod on the inner wall of the control panel, and the driving rod slides on the inner side of the driven groove rod. A reciprocating sliding rod is connected to the center of a side of the driven groove rod away from the driving wheel, and the reciprocating sliding rod extends to the outside of the control panel, and one end of the reciprocating sliding rod located on the outside of the control panel is penetrated into the inner side of the sliding friction block.

[0010] As a preferred technical solution of the present application, symmetrical limiting protrusions are fixed on the upper and lower sides of one side of the driven slot rod close to the control panel, and the limiting protrusions slide on the inner wall of the control panel. A driving motor is fixed to the bottom of the inner side of the control panel, and a driving gear is connected to the output end of the driving motor. A transmission gear block with equidistant distribution in an annular shape is fixed to one side of the end of the outer wall of the driving wheel, and the driving gear is meshed with the transmission gear block for transmission. The outer wall of the end of the driving wheel is located on one side of the transmission gear block and is provided with a toothed belt transmission gear block with equidistant distribution in an annular shape.

[0011] As a preferred technical solution of the present application, the compression transmission group includes a left transmission component and a right transmission component, and the left transmission component and the right transmission component are respectively located on both sides of the driving wheel, and the left transmission component and the right transmission component include a transmission main shaft, and the transmission main shaft is rotatably connected to the inner side of the inner wall of the control console, and one end of the transmission main shaft is penetrated under the compression component, and a second gear is fixed to the outer wall of one end of the transmission main shaft located under the compression component, and the second gear is meshed with the compression component for transmission, and symmetrical adjustment shafts are provided on the upper and lower sides of the transmission main shaft, and a first gear is fixed to the end of the adjustment shaft, and the outer sleeve of the first gear A double-sided transmission belt is provided, the middle part of the double-sided transmission belt is sleeved on the outside of the toothed belt transmission tooth block, the first gear and the toothed belt transmission tooth block are meshed with the double-sided transmission belt for transmission, the end of the transmission main shaft inside the right transmission component is connected with a belt transmission wheel, the outer wall of the belt transmission wheel is fitted and slidably connected with the outer wall of the double-sided transmission belt, and a left-side changing shaft is provided on the side of the transmission main shaft inside the left transmission component close to the driving wheel in the horizontal direction, and the middle part of the left changing shaft and the end of the transmission main shaft are connected with mutually meshing changing gears, and the end of the left changing shaft is connected with a belt transmission wheel, and the belt transmission wheel fits and slides with the outer wall of the double-sided transmission belt.

[0012] As a preferred technical solution of the present application, the pressure platform transmission group includes a transmission plate, which slides on both sides of the bottom of the detection platform, and symmetrical first tooth plates are fixed on both sides of the top surface of the transmission plate, and the first tooth plates are meshed with the bottom of the second gear for transmission, and an L-shaped transmission slide plate is fixed to the middle of the bottom surface of the transmission plate, and the other end of the L-shaped transmission slide plate extends to the bottom of both sides of the pressure regulating platform, and a second tooth plate is fixed on the top surface of one end of the L-shaped transmission slide plate away from the transmission plate, and the second tooth plate is transmission-connected to the height adjustment group.

[0013] As a preferred technical solution of the present application, the height adjustment group includes a cam rod, which rotates on both sides of the bottom of the pressure regulating platform, the outer wall of the cam rod is in contact with the bottom surface of the pressure regulating platform, and the center of the cam rod is rotatably connected with a telescopic adjustment gear, and staggered driving tooth plates are provided on both sides of the middle part of the cam rod, and the staggered positions of the driving tooth plates are meshed with the telescopic adjustment gear. A matching ratchet is fixed to one end of the driving tooth plate away from the telescopic adjustment gear, and parallel third gears are provided at both ends of the cam rod. A matching ratchet groove is provided at the center of the third gear, and the end of the matching ratchet away from the cam rod is slidably penetrated inside the matching ratchet groove. A driving push rod is connected at the center of one end of the matching ratchet, and the end of the driving push rod away from the matching ratchet is fixed to the pressure regulating driving button, and matching limiting teeth are provided at both ends of the cam rod near the third gear, and the matching ratchet is limited to slide inside the matching limiting teeth, and a storage slide groove is provided inside the matching limiting teeth, and the matching ratchet is stored inside the storage slide groove when the pressure regulating driving button is pushed.

[0014] As a preferred technical solution of the present application, the pressing assembly includes a support seat, which is provided with two symmetrical groups. The support seats are symmetrically fixed on both sides of the top surface of the detection platform. The inner side of the support seat is rotatably connected to a fourth gear, and a pressing convex rod is connected between the fourth gears. The outer wall of the pressing convex rod abuts against the top surface of the detection platform, and the fourth gear is meshed with the second gear for transmission.

[0015] As a preferred technical solution of the present application, symmetrical limit blocks are fixed on the outer walls on both sides of the voltage regulating platform, and symmetrical lifting limit grooves are opened at the position where the detection platform is connected to the voltage regulating platform. The limit blocks slide within the lifting limit grooves, and a downward pressure spring is fixed on the upper side of the lifting limit groove, and the bottom surface of the downward pressure spring is fixed to the top surface of the limit block.

[0016] As a preferred technical solution of the present application, symmetrical fixing grooves are provided on both sides of the top of the sliding friction block, a convex fixed shaft is rotatably connected to the inner side of the fixing groove, the outer wall of the convex fixed shaft abuts against the inner wall of the fixing groove, a center shaft is fixed to one end of the convex fixed shaft, one end of the center shaft extends to the outside of the sliding friction block, a driving column is vertically slidably penetrated at one end of the center shaft located on the outside of the sliding friction block, and counterweight balls are connected to both ends of the driving column.

[0017] Compared with the prior art, the present invention has the following beneficial effects: In the scheme of the present application: through the multi-transmission mechanism design inside the driving unit, when the driving unit starts working, it can directly drive the pressing and fixing component to transmit, automatically fix the product packaging box placed on the top surface of the testing table, and complete the wear resistance test of the detector. At the same time, before use, the pressure adjustment drive button can be turned according to the friction force required for the test, and the friction between the testing table and the sliding friction block can be freely adjusted, thereby improving the multi-pressure detection function of the detector.

[0018] 1. The present invention is provided with symmetrical pressing components on both sides of the top surface of the testing table. The pressing components can directly fix the product packaging box placed on the top surface of the testing table when the equipment is started, and the fixing is carried out in a bidirectional pulling manner, thereby reducing the manual operation process, improving the convenience of operation of the detector, and saving detection time.

[0019] 2. The present invention provides a pressure regulating platform in the middle of the testing platform. Before product testing, the pressure regulating driving button can be rotated according to the friction force required for the test, so that when the equipment is started, it can drive the pressure regulating platform to rise, change the distance between the testing platform and the sliding friction block, and thus realize the friction adjustment between the testing platform and the sliding friction block.

[0020] 3. The present invention provides symmetrical fixing grooves on both sides of the top of the sliding friction block, and a convex fixing shaft is rotatably connected to the inner side of the fixing groove. The convex fixing shaft can be driven to rotate by rotating a driving rod connected to one end of the convex fixing shaft. The convex portion of the convex fixing shaft is used to press and fix the product packaging box inserted into the fixing groove, so that the connection and fixation of the sliding friction block and the product packaging box are more efficient and more convenient to use.

[0021] 4. The present invention is provided with a pressing transmission group on the inner side of the driving part, which is connected to the reciprocating driving group. When the reciprocating driving group drives the sliding friction block to slide back and forth, it can simultaneously drive the pressing assembly to rotate in both directions, so that the pressing convex rod inside the pressing assembly can automatically rotate to both sides, pulling the product packaging box placed on the top surface of the testing table to both sides and completing the pressing and fixing.

[0022] 5. The present invention has a press table transmission group connected to the bottom of the pressing transmission group, which slides under the detection table. When the reciprocating drive part drives the pressing transmission group, it can synchronously drive the press table transmission group to slide under the detection table. The driving force of the pressing transmission group is used to drive the height adjustment group to rotate, so that the pressure regulating table can be synchronously driven to rise to the adjusted height when the drive part is started, thereby realizing the function of free regulation of friction.

[0023] 6. The present invention is provided with a telescopic adjustment gear and a driving tooth plate transmission connection on the inner side of the height adjustment group, and is connected with a matching ratchet through the driving tooth plate. Before the driving part is driven, the matching ratchet can be pushed to the inside of the cam rod by pushing and rotating the pressure adjustment driving button, driving the cam rod to rotate, allowing the cam rod to be adjusted to a required angle, and pulling out the adjustment driving button. When the driving part is started, the height adjustment group can be driven by the driving part to realize the function of freely adjusting the height of the pressure regulating platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic structural diagram of a preferred embodiment of a printing ink simulation wear resistance detector provided by the present invention; Figure 2 for Figure 1 The schematic structural diagram of the middle section of the instrument base shown; Figure 3 for Figure 2 The schematic diagram of the structure inside the instrument base is shown; Figure 4 for Figure 3 The transmission structure diagram of the reciprocating drive group position shown; Figure 5 for Figure 3 The enlarged cross-sectional view of the transmission structure of the compression transmission group position shown; Figure 6 for Figure 3The structural exploded and enlarged schematic diagram of the location of the pressing assembly shown; Figure 7 for Figure 6 The structural diagram of the position of the press table transmission group shown; Figure 8 for Figure 7 The structure of the height adjustment group is shown in a schematic diagram of an exploded and enlarged cross-section; Fig. 9 for Figure 8 The schematic diagram of the structure of the third gear shown in section; Fig.10 for Figure 1 The structural exploded and enlarged schematic diagram of the sliding friction block shown; Fig.11 for Figure 2 The schematic diagram of the structure of the connection position between the reciprocating drive group and the control console shown; Fig.12 for Figure 2 The schematic diagram of the structure is an enlarged cross-sectional view of the connection position between the voltage regulating platform and the testing platform.

[0025] Indicated in the figure: 1. Instrument base; 2. Testing table; 3. Control panel; 4. Driving unit; 41. reciprocating drive group; 411. driving wheel; 412. driving rod; 413. driven slot rod; 414. reciprocating sliding rod; 415. limiting convex block; 416. driving motor; 417. driving gear; 418. transmission gear block; 419. toothed belt transmission gear block; 42, compression transmission group; 421, left transmission component; 422, right transmission component; 4211, transmission main shaft; 4212, belt drive pulley; 4213, adjustment shaft; 4214, first gear; 4215, double-sided transmission belt; 4216, left change shaft; 4217, change gear; 4218, second gear; 43. Pressing table transmission group; 431. Transmission plate; 432. First tooth plate; 433. L-shaped transmission slide plate; 434. Second tooth plate; 44, height adjustment group; 441, cam rod; 442, telescopic adjustment gear; 443, driving tooth plate; 444, matching ratchet; 445, third gear; 446, matching ratchet groove; 447, driving push rod; 448, matching limit tooth; 449, storage slide groove; 5. Pressing assembly; 51. Support seat; 52. Fourth gear; 53. Pressing convex rod; 6. Pressure regulating table; 61. Limit block; 62. Lifting limit slot; 63. Pressing spring; 7. Voltage regulating drive button; 8. Sliding friction block; 81. Fixed groove; 82. Convex fixed shaft; 83. Central shaft; 84. Driving rod; 85. Counterweight ball. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings 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 should fall within the scope of protection of the present invention.

[0027] As described in the background art, the detector cannot automatically fix the packaging box.

[0028] In order to solve this technical problem, the present invention provides a printing ink simulation wear resistance tester, which is used for automatic fixation of packaging boxes and can freely adjust the friction intensity of the packaging box wear resistance test.

[0029] Specifically, please refer to Figure 1-Figure 12 The printing ink simulation wear resistance detector specifically includes: An instrument base 1 is provided with a testing platform 2 on the top surface of the instrument base 1, a control panel 3 is connected to one side of the top surface of the testing platform 2, symmetrical pressing components 5 are provided on both sides of the top surface of the testing platform 2 away from the control panel 3, a pressure regulating platform 6 is provided on the top surface of the testing platform 2 between the pressing components 5, a sliding friction block 8 is provided on the top surface of the pressure regulating platform 6, a driving part 4 is provided at the position where the instrument base 1 connects the testing platform 2 and the control panel 3, the driving part 4 is respectively connected to the pressing component 5, the pressure regulating platform 6 and the sliding friction block 8, and a symmetrical pressure regulating driving button 7 is connected to the upper front side of the instrument base 1, and the pressure regulating driving button 7 is connected to the driving part 4.

[0030] The present invention provides a printing ink simulation wear resistance tester. Through the multi-transmission mechanism design inside the driving part 4, when the driving part 4 starts working, it can directly drive the pressing component 5 to transmit, automatically fix the product packaging box placed on the top surface of the testing platform 2, and complete the wear resistance test of the tester. At the same time, before use, the pressure adjustment drive button 7 can be turned according to the friction force required for the test, and the friction force between the testing platform 2 and the sliding friction block 8 can be freely adjusted, thereby improving the multi-pressure detection function of the tester.

[0031] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0032] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0034] Example 1 Please refer to Figure 1-Figure 12 , a printing ink simulation wear resistance tester, the driving unit 4 includes a reciprocating drive group 41, the reciprocating drive group 41 is located at the lower middle part of the control panel 3, and the bottom two sides of the reciprocating drive group 41 are provided with a pressing transmission group 42, the pressing transmission group 42 is connected to the reciprocating drive group 41 in transmission, one end of the pressing transmission group 42 is passed through the bottom of the pressing component 5, the pressing transmission group 42 is connected to the pressing component 5 in transmission, the pressing transmission group 42 is located below the pressing component 5 and is provided with a press table transmission group 43, the press table transmission group 43 is connected to the pressing transmission group 42 in transmission, the press table transmission group 43 slides on the inner side of the detection platform 2, the end of the press table transmission group 43 away from the pressing transmission group 42 is located on both sides of the lower part of the pressure regulating platform 6, the press table transmission group 43 is located at the lower part of the pressure regulating platform 6 and is provided with a symmetrical height adjustment group 44, and the height adjustment group 44 abuts against the top surface of the pressure regulating platform 6.

[0035] The reciprocating drive group 41 includes a driving wheel 411, which is rotatably connected to the middle of the inner side of the control panel 3. A driving rod 412 is connected to a side of the driving wheel 411 close to the detection platform 2, and the driving rod 412 is fixed to one side of the driving wheel 411. A driven groove rod 413 is limited and slidably provided at a position of the inner wall of the control panel 3 close to the driving rod 412. The driving rod 412 slides on the inner side of the driven groove rod 413. A reciprocating sliding rod 414 is connected to the center of a side of the driven groove rod 413 away from the driving wheel 411. The reciprocating sliding rod 414 extends to the outside of the control panel 3, and one end of the reciprocating sliding rod 414 located on the outside of the control panel 3 is penetrated into the inner side of the sliding friction block 8.

[0036] Symmetrical limiting protrusions 415 are fixed on the upper and lower sides of one side of the driven slot rod 413 close to the control panel 3. The limiting protrusions 415 slide on the inner wall of the control panel 3. A driving motor 416 is fixed to the bottom of the inner side of the control panel 3. The output end of the driving motor 416 is connected to a driving gear 417. A transmission tooth block 418 with equidistant distribution in an annular shape is fixed to one side of the outer wall end of the driving wheel 411. The driving gear 417 is meshed with the transmission tooth block 418 for transmission. The outer wall of the end of the driving wheel 411 is located on one side of the transmission tooth block 418 and is provided with a toothed belt transmission tooth block 419 with equidistant distribution in an annular shape.

[0037] The compression transmission group 42 includes a left transmission component 421 and a right transmission component 422, which are respectively located on both sides of the driving wheel 411. The left transmission component 421 and the right transmission component 422 include a transmission main shaft 4211, which is rotatably connected to the inner side of the inner wall of the control console 3. One end of the transmission main shaft 4211 is penetrated under the compression component 5. A second gear 4218 is fixed to the outer wall of one end of the transmission main shaft 4211 located under the compression component 5. The second gear 4218 is meshed with the compression component 5 for transmission. Symmetrical adjustment shafts 4213 are provided on the upper and lower sides of the transmission main shaft 4211. A first gear 4214 is fixed to the end of the adjustment shaft 4213. A double-sided transmission belt 4215 is sleeved on the outer side of the first gear 4214. The middle part of the double-sided transmission belt 4215 is sleeved on the outside of the toothed belt transmission tooth block 419, the first gear 4214 and the toothed belt transmission tooth block 419 are meshed with the double-sided transmission belt 4215 for transmission, the end of the transmission main shaft 4211 inside the right transmission component 422 is connected with a belt transmission wheel 4212, the outer wall of the belt transmission wheel 4212 is fitted and slidably connected with the outer wall of the double-sided transmission belt 4215, and the transmission main shaft 4211 inside the left transmission component 421 is provided with a left-side changing shaft 4216 on the side close to the driving wheel 411 in the horizontal direction, and the middle part of the left-side changing shaft 4216 and the end of the transmission main shaft 4211 are connected with mutually meshing changing gears 4217, and the end of the left-side changing shaft 4216 is connected with a belt transmission wheel 4212, and the belt transmission wheel 4212 is fitted and slidably connected with the outer wall of the double-sided transmission belt 4215.

[0038] The inner side of the driving part 4 is provided with a pressing transmission group 42 which is connected to the reciprocating driving group 41. When the reciprocating driving group 41 drives the sliding friction block 8 to slide back and forth, it can simultaneously drive the pressing component 5 to rotate in both directions, so that the pressing convex rod 53 inside the pressing component 5 can automatically rotate to both sides, pulling the product packaging box placed on the top surface of the testing table 2 to both sides and completing the pressing and fixing.

[0039] Example 2 The printing ink simulation wear resistance detector provided in Example 1 is further optimized, specifically, as follows Figure 1-Figure 12 The pressure table transmission group 43 includes a transmission plate 431, which slides on both sides of the bottom of the detection table 2. Symmetrical first tooth plates 432 are fixed on both sides of the top surface of the transmission plate 431. The first tooth plates 432 are meshed with the bottom of the second gear 4218 for transmission. An L-shaped transmission slide plate 433 is fixed to the middle of the bottom surface of the transmission plate 431. The other end of the L-shaped transmission slide plate 433 extends to the bottom of both sides of the pressure regulating table 6. A second tooth plate 434 is fixed to the top surface of one end of the L-shaped transmission slide plate 433 away from the transmission plate 431. The second tooth plate 434 is connected to the height adjustment group 44 in transmission.

[0040] The lower transmission of the compression and solidification transmission group 42 is connected to the pressing platform transmission group 43 which slides under the testing platform 2. When the reciprocating driving part 4 drives the compression and solidification transmission group 42 to drive, it can synchronously drive the pressing platform transmission group 43 to slide under the testing platform 2. The driving force of the compression and solidification transmission group 42 is used to drive the height adjustment group 44 to rotate, so that the pressure regulating platform 6 can be synchronously driven to rise to the adjusted height when the driving part 4 is started, thereby realizing the function of free regulation of friction.

[0041] Example 3 A printing ink simulation wear resistance detector provided in Example 1 or 2 is further optimized, specifically, as follows Figure 1-Figure 12 As shown, the height adjustment group 44 includes a cam rod 441, which rotates on both sides of the bottom of the pressure regulating platform 6, and the outer wall of the cam rod 441 is in contact with the bottom surface of the pressure regulating platform 6. The center of the cam rod 441 is rotatably connected with a telescopic adjustment gear 442, and staggered driving tooth plates 443 are inserted on both sides of the middle of the cam rod 441. The driving tooth plates 443 are meshed with the telescopic adjustment gear 442 at staggered positions, and a matching ratchet 444 is fixed to the end of the driving tooth plate 443 away from the telescopic adjustment gear 442. Parallel and opposite third gears 445 are provided at both ends of the cam rod 441, and a matching ratchet 444 is provided at the center of the third gear 445. The mating ratchet groove 446 is provided, and the end of the mating ratchet 444 away from the cam rod 441 is slidably penetrated into the mating ratchet groove 446. A driving push rod 447 is connected at the center of one end of the mating ratchet 444. The end of the driving push rod 447 away from the mating ratchet 444 is fixed to the pressure regulating driving button 7. The two ends of the cam rod 441 are provided with mating limiting teeth 448 near the third gear 445. The mating ratchet 444 is limitedly slid inside the mating limiting teeth 448. A receiving slide groove 449 is provided inside the mating limiting teeth 448. When the pressure regulating driving button 7 is pushed, the mating ratchet 444 is received inside the receiving slide groove 449.

[0042] The inner side of the height adjustment group 44 is provided with a telescopic adjustment gear 442 and a driving tooth plate 443 for transmission connection, and is connected to the matching ratchet 444 through the driving tooth plate 443. Before the driving part 4 is driven, the matching ratchet 444 can be pushed to the inside of the cam rod 441 by pushing and rotating the pressure adjustment driving button 7, thereby driving the cam rod 441 to rotate and adjust the cam rod 441 to the required angle. The adjusting driving button can be pulled out, and when the driving part 4 is started, the height adjustment group 44 can be driven by the driving part 4 to realize the function of freely adjusting the height of the pressure regulating platform 6.

[0043] Example 4 A printing ink simulation wear resistance detector provided in Examples 1-3 is further optimized, specifically, as follows Figure 1-Figure 12As shown, the pressing assembly 5 includes a support seat 51, and the support seat 51 is provided with two symmetrical groups. The support seat 51 is symmetrically fixed on both sides of the top surface of the detection platform 2. The inner side of the support seat 51 is rotatably connected to the fourth gear 52, and a pressing convex rod 53 is connected between the fourth gears 52. The outer wall of the pressing convex rod 53 abuts against the top surface of the detection platform 2, and the fourth gear 52 is meshed with the second gear 4218 for transmission.

[0044] Symmetrical pressing components 5 are provided on both sides of the top surface of the testing table 2. The pressing components 5 can directly fix the product packaging box placed on the top surface of the testing table 2 when the equipment is started, and can be fixed in a two-way pulling manner, thereby reducing the manual operation process, improving the operation convenience of the detector, and saving detection time.

[0045] Example 5 A printing ink simulation wear resistance detector provided in Examples 1-4 is further optimized, specifically, as follows Figure 1-Figure 12 As shown, symmetrical limit blocks 61 are fixed to the outer walls on both sides of the voltage regulating platform 6, and symmetrical lifting limit grooves 62 are opened at the position where the detection platform 2 is connected to the voltage regulating platform 6. The limit blocks 61 slide within the lifting limit grooves 62, and a downward pressure spring 63 is fixed on the upper side of the lifting limit grooves 62. The bottom surface of the downward pressure spring 63 is fixed to the top surface of the limit block 61.

[0046] A pressure regulating platform 6 is provided in the middle of the testing platform 2. Before product testing, the pressure regulating driving button 7 can be turned according to the friction force required for the test, so that when the equipment is started, the pressure regulating platform 6 can be driven to rise, thereby changing the distance between the testing platform 2 and the sliding friction block 8, thereby realizing the friction force adjustment between the testing platform 2 and the sliding friction block 8.

[0047] Example 6 A printing ink simulation wear resistance detector provided in Examples 1-5 is further optimized, specifically, as Figure 1-Figure 12 As shown, symmetrical fixing grooves 81 are provided on both sides of the top of the sliding friction block 8, and a convex fixing shaft 82 is rotatably connected to the inner side of the fixing groove 81. The outer wall of the convex fixing shaft 82 abuts against the inner wall of the fixing groove 81, and a center shaft 83 is fixed to one end of the convex fixing shaft 82. One end of the center shaft 83 extends to the outside of the sliding friction block 8, and a driving column 84 is vertically slidably penetrated at one end of the center shaft 83 located on the outside of the sliding friction block 8, and counterweight balls 85 are connected to both ends of the driving column 84.

[0048] Symmetrical fixing grooves 81 are provided on both sides of the top of the sliding friction block 8, and a convex fixing shaft 82 is rotatably connected to the inner side of the fixing groove 81. By rotating the driving column 84 connected to one end of the convex fixing shaft 82, the convex fixing shaft 82 can be driven to rotate, and the convex part of the convex fixing shaft 82 is used to press and fix the product packaging box inserted into the fixing groove 81, so that the sliding friction block 8 and the product packaging box are more efficiently connected and fixed, and it is more convenient to use.

[0049] Working steps: By operating the operation panel on the top of the control console 3, the drive motor 416 inside the drive unit 4 is started, and the drive gear 417 connected to the output end of the drive motor 416 drives the drive wheel 411 to rotate, and the rotation of the drive wheel 411 drives the double-sided transmission belt 4215 and the drive rod 412 to rotate.

[0050] When the driving rod 412 rotates, it drives the driven slot rod 413 to slide to one side. During the sliding process of the driven slot rod 413, the limiting protrusion 415 is driven to slide inside the control console 3. At the same time, as the driven slot rod 413 slides, the reciprocating sliding rod 414 will follow the horizontal sliding. The sliding of the reciprocating sliding rod 414 will drive the sliding friction block 8 to slide to one side. When the driving wheel 411 drives the driving rod 412 to rotate to one end limit, as the driving wheel 411 rotates, the driving rod 412 will rotate in the opposite direction, thereby driving the driven slot rod 413 to slide in the opposite direction. Through the continuous rotation of the driving wheel 411, the driving rod 412 can drive the driven slot rod 413 to slide back and forth continuously, thereby realizing the reciprocating sliding of the reciprocating sliding rod 414.

[0051] When the double-sided transmission belt 4215 rotates, it will mesh with the toothed belt transmission tooth block 419 on the outer wall of the driving wheel 411 to ensure the driving force of the double-sided transmission belt 4215. The double-sided transmission belt 4215 is rotated by the driving wheel 411, and the adjustment shaft 4213 inside the left transmission part and the right transmission part connected at both ends will mesh and transmit with the double-sided transmission belt 4215 through the first gear 4214, thereby tightening the double-sided transmission belt 4215 and transmitting the driving force of the double-sided transmission belt 4215. Due to the limitation of the adjustment shaft 4213, the smooth surface of the outer wall of the double-sided pulley will fit with the outer wall of the belt drive pulley 4212 connected to the end of the transmission main shaft 4211 over a large area, thereby allowing the double-sided transmission belt 4215 to drive the transmission main shaft 4211 to rotate.

[0052] The left transmission component 421 is provided with a left direction-changing shaft 4216 inside, which can make the left transmission main shaft 4211 have a rotation direction opposite to that of the right transmission main shaft 4211 through the driving engagement of the left direction-changing shaft 4216 and the direction-changing gear 4217. When the driving wheel 411 rotates, the left transmission component 421 and the right transmission component 422 can rotate in opposite directions at the same time.

[0053] When the transmission main shaft 4211 rotates, one end of the transmission main shaft 4211 passing through the lower part of the pressing and fixing component 5 will mesh with the fourth gear 52 through the second gear 4218, so that the rotational driving force of the driving wheel 411 can drive the pressing and fixing convex rod 53 connected to the middle part of the fourth gear 52 to rotate, and the pressing and fixing convex rods 53 on both sides rotate in both directions. With the bidirectional rotation of the pressing and fixing convex rods 53, the product packaging box placed on the top surface of the testing table 2 can be tightened and pressed and fixed in both directions.

[0054] During the rotation of the transmission main shaft 4211, the second gear 4218 is meshed with the first tooth plate 432, driving the transmission plate 431 to slide on the inner side of the detection platform 2. During the sliding of the transmission plate 431, the L-shaped transmission slide plate 433 connected to the bottom surface thereof slides along with it. During the sliding of the L-shaped transmission slide plate 433, the second tooth plate 434 on the top surface thereof drives the third gear 445 meshed with it to rotate. The rotation of the third gear 445 drives the matching ratchet 444 to rotate. The two ends of the matching ratchet 444 are respectively located at Cooperating with the inner side of the ratchet groove 446 and the inner side of the limiting tooth 448, the third gear 445 will drive the cam rod 441 to rotate through the ratchet wheel 444. When the cam rod 441 rotates, since the cam rod 441 itself only has a raised portion within a range of 180°, the raised portion of the cam rod 441 will apply an upward thrust to the pressure regulating platform 6 that is in contact with its top surface, allowing the pressure regulating platform 6 to apply a thrust to the product packaging box placed on the top surface, thereby completing the increase in the pressure of the pressure regulating platform 6 on the bottom surface of the sliding friction block 8, thereby achieving an increase in friction.

[0055] It should be noted that: since the pressing and fixing convex rod 53 and the cam rod 441 have the same structure, when the pressing and fixing convex rod 53 is driven by the driving force to rotate until the raised part abuts against the top surface of the detection table 2, the pressing and fixing convex rod 53 cannot rotate, and will limit the fourth gear 52. When the fourth gear 52 stops rotating after the limit, the transmission main shaft 4211 will be blocked and cannot rotate, and the double-sided transmission belt 4215 drives the transmission main shaft 4211 to slide between the sliding surface of the outer wall and the belt drive wheel 4212, and will not continue to drive the pressing and fixing transmission group 42.

[0056] It should be noted that the rotation limit of the pressing convex rod 53 is 180°, so the maximum transmission stroke of the pressing table transmission group 43 is only 180°, and the maximum rotation drive of the height adjustment group 44 is 180°.

[0057] When the pressure regulating platform 6 is adjusted, since the cam rod 441 only has the upward driving function of 180°, when the rotation is not adjusted, the rotational driving force provided by the pressure platform transmission group 43 can only drive the non-protruding part of the cam rod 441 to rotate, and the cam rod 441 cannot apply an upward driving force to the pressure regulating platform 6.

[0058] When the detection instrument is used, the pressure regulating driving button 7 can be pushed according to the friction force required by itself, and the driving push rod 447 can be pushed to slide toward the inside of the cam rod 441 through the pressure regulating driving button 7, so that the driving push rod 447 can push the driving tooth plate 443 to slide inside the cam rod 441, and the driving tooth plate 443 can mesh with the telescopic adjustment gear 442 through the tooth plate at the end to drive the staggered driving tooth plate 443 on the other side to slide, so that when the driving tooth plate 443 is extended and retracted, it can drive the matching ratchet wheels 444 at both ends of the cam rod 441 to slide. When the matching ratchet wheel 444 slides out from the inside of the matching ratchet groove 446, the pressure regulating driving button 7 is turned at this time. The cam rod 441 can be driven to rotate. The position of the cam rod 441 after rotating 180° can be obtained according to the angle of the rotating cam rod 441. The rotation angle of the cam rod 441 is the distance that the cam rod 441 pushes the pressure regulating platform 6. When the angle adjustment of the cam rod 441 is completed, the pressure regulating driving button 7 is pulled. When the pressure regulating driving button 7 is subjected to tension, the driving tooth plate 443 will slide outward, so that the mating ratchet wheels 444 on both sides slide outward at the same time, thereby making the mating ratchet wheels 444 slide to the inside of the mating ratchet groove 446 inside the third gear 445, completing the transmission connection between the cam rod 441 and the third gear 445.

[0059] It should be noted that the mating ratchet 444 has a plurality of ratchet teeth, each ratchet tooth is a gear position for adjusting the cam rod 441, and the adjustment accuracy of the cam rod 441 can be controlled according to the ratchet teeth of the mating ratchet 444. When the upward pushing distance of the cam rod 441 is adjusted, it can rotate freely to realize the function of freely controlling the friction force.

[0060] It should be noted that: the outer wall of the voltage regulating driving button 7 is engraved with an indication mark, and the front of the testing platform 2 is engraved with an adjustment scale located on the circumference of the voltage regulating driving button 7, and the adjustment scale can be set according to the number of ratchet teeth of the matching ratchet wheel 444.

[0061] By rotating the voltage regulating driving button 7 to different positions, the distance that the cam rod 441 pushes the voltage regulating platform 6 after rotation can be completed.

[0062] When the driving unit 4 drives the reciprocating sliding rod 414 to slide a specified number of times, the driving motor 416 will rotate in the reverse direction, causing the driving wheel 411 to drive the transmission main shaft 4211 to reverse, and allowing the raised position of the pressing convex rod 53 connected to the driving main shaft to rotate in the reverse direction to the upper part of the support seat 51, so that the inspected product packaging box can be taken out directly. At the same time, the reverse rotation can also drive the cam rod 441 to rotate in the reverse direction and reset, allowing the adjusted pressure regulating platform 6 to reset.

[0063] When the sliding friction block 8 is in use, the sliding friction block 8 can be removed from the outer wall of the reciprocating sliding rod 414, and the product packaging box to be inspected can be wrapped around the outer side of the sliding friction block 8, with the end of the product packaging box inserted into the inner side of the fixing groove 81. Then, the driving rod 412 is rotated to fix the raised part of the outer wall of the convex fixing shaft 82 to the end of the product, thereby completing the fixation of the product and the sliding friction block 8.

[0064] It should be noted that the convex fixed shaft 82 fixes the product in the direction of rotation toward the inside, so the end of the product will be tightened during the rotation of the convex fixed shaft 82 to ensure the fit between the product and the sliding friction block 8. At the same time, after the driving rod 412 rotates, the driving rod 412 will be in a vertical or oblique state, and the counterweight ball 85 at its end will push the driving rod 412 to slide to the lower side, and pressure will be applied to the driving rod 412 through the counterweight ball 85, thereby ensuring that the convex fixed shaft 82 is continuously in a compressed state during the sliding process of the sliding friction block 8, thereby ensuring the firmness of the product connection to the outer wall of the sliding friction block 8.

[0065] The present invention can perform multi-level pressure friction detection on product packaging boxes, improves friction pressure simulation detection of various types of packaging boxes, and improves the detection result accuracy of simulated wear resistance of printing ink.

[0066] The use process of the printing ink simulation wear resistance detector provided by the present invention is as follows: Wrap the packaging box to be tested on the outside of the sliding friction block 8, then place the packaging box to be rubbed on the top surface of the testing table 2, so that the two ends of the packaging box are located at the bottom of the pressing convex rod 53, then combine the sliding friction block 8 with the loaded packaging box with the reciprocating sliding rod 414, control the operation panel, input the number of required frictions, and turn the voltage regulating drive button 7 to adjust the friction force during friction, then start the drive motor 416 to perform friction detection, after the friction detection is completed, the drive motor 416 will automatically reverse a certain number of circles, and then the packaging box on the top surface of the testing table 2 can be directly taken out to complete the wear resistance test.

[0067] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0068] Obviously, the embodiments described above are only some embodiments of the present invention, rather than all embodiments. The preferred embodiments of the present invention are given in the accompanying drawings, but they do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific embodiments, or to perform equivalent replacements for some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of the present invention, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the present invention.

Claims

1. A printing ink simulation wear tester, characterized in that: The invention comprises an instrument base (1), wherein a detection platform (2) is provided on the top surface of the instrument base (1), a control panel (3) is connected to one side of the top surface of the detection platform (2), symmetrical pressing components (5) are provided on both sides of the top surface of the detection platform (2) away from the control panel (3), a pressure regulating platform (6) is provided on the top surface of the detection platform (2) between the pressing components (5), a sliding friction block (8) is provided on the top surface of the pressure regulating platform (6), a driving unit (4) is provided at the position where the instrument base (1) connects the detection platform (2) and the control panel (3), the driving unit (4) is respectively connected to the pressing component (5), the pressure regulating platform (6) and the sliding friction block (8), and a symmetrical pressure regulating driving button (7) is connected to the upper front side of the instrument base (1), and the pressure regulating driving button (7) is connected to the driving unit (4).

2. A printing ink simulation wear resistance detector according to claim 1, characterized in that: The driving part (4) comprises a reciprocating driving group (41), the reciprocating driving group (41) is located at the lower middle part of the control panel (3), and the bottom two sides of the reciprocating driving group (41) are provided with a pressing and fixing transmission group (42), the pressing and fixing transmission group (42) is connected to the reciprocating driving group (41) in a driving manner, one end of the pressing and fixing transmission group (42) is passed through the bottom of the pressing and fixing component (5), the pressing and fixing transmission group (42) is connected to the pressing and fixing component (5), and the pressing and fixing transmission group (42) is located at the pressing and fixing component (5). ) is provided at a position below the pressure regulating platform (6), the pressure regulating platform transmission group (43) is in transmission connection with the pressing and solidifying transmission group (42), the pressure regulating platform transmission group (43) slides on the inner side of the detection platform (2), one end of the pressure regulating platform transmission group (43) away from the pressing and solidifying transmission group (42) is located on both sides of the lower part of the pressure regulating platform (6), and the position of the pressure regulating platform transmission group (43) located below the pressure regulating platform (6) is provided with a symmetrical height adjustment group (44), and the height adjustment group (44) is in contact with the top surface of the pressure regulating platform (6).

3. A printing ink simulation wear resistance detector according to claim 2, characterized in that: The reciprocating drive group (41) comprises a driving wheel (411), the driving wheel (411) is rotatably connected to the middle part of the inner side of the control panel (3), a driving rod (412) is connected to a side of the driving wheel (411) close to the detection platform (2), the driving rod (412) is fixed to one side of the driving wheel (411), a driven groove rod (413) is limitedly slidable at a position close to the driving rod (412) on the inner wall of the control panel (3), the driving rod (412) slides on the inner side of the driven groove rod (413), a reciprocating sliding rod (414) is connected to the center of a side of the driven groove rod (413) away from the driving wheel (411), the reciprocating sliding rod (414) extends to the outer side of the control panel (3), and one end of the reciprocating sliding rod (414) located on the outer side of the control panel (3) is penetrated into the inner side of the sliding friction block (8).

4. A printing ink simulation wear resistance detector according to claim 3, characterized in that: Symmetrical limiting protrusions (415) are fixed on the upper and lower sides of a side of the driven slot rod (413) close to the control panel (3); the limiting protrusions (415) are limitedly slid on the inner wall of the control panel (3); a driving motor (416) is fixed on the inner bottom of the control panel (3); the output end of the driving motor (416) is connected to a driving gear (417); a transmission tooth block (418) arranged in an annular manner and equidistantly is fixed on one side of the outer wall end of the driving wheel (411); the driving gear (417) and the transmission tooth block (418) are meshed for transmission; and a toothed belt transmission tooth block (419) arranged in an annular manner and equidistantly is provided on the outer wall of the end of the driving wheel (411) and located on one side of the transmission tooth block (418).

5. A printing ink simulation wear resistance detector according to claim 4, characterized in that: The compression transmission group (42) comprises a left transmission component (421) and a right transmission component (422), wherein the left transmission component (421) and the right transmission component (422) are respectively located on both sides of the driving wheel (411), and the left transmission component (421) and the right transmission component (422) comprise a transmission main shaft (4211), wherein the transmission main shaft (4211) is rotatably connected to the inner side of the inner wall of the control console (3), and one end of the transmission main shaft (4211) is inserted into The first gear (4214) is fixed to the outer wall of one end of the transmission main shaft (4211) located below the compression component (5), and the second gear (4218) is meshed with the compression component (5) for transmission. The transmission main shaft (4211) is provided with symmetrical positioning shafts (4213) on the upper and lower sides, and the first gear (4214) is fixed to the end of the positioning shaft (4213). The outer side of the first gear (4214) is sleeved with a double-sided transmission belt (421 5), the middle part of the double-sided transmission belt (4215) is sleeved on the outer side of the toothed belt transmission tooth block (419), the first gear (4214) and the toothed belt transmission tooth block (419) are meshed and transmitted with the double-sided transmission belt (4215), the end of the transmission main shaft (4211) inside the right transmission component (422) is connected with a belt transmission wheel (4212), the outer wall of the belt transmission wheel (4212) is slidably connected with the outer wall of the double-sided transmission belt (4215), and the left transmission A left-side direction-changing shaft (4216) is provided on the side of the transmission main shaft (4211) in the horizontal direction close to the driving wheel (411) inside the component (421), and mutually meshing direction-changing gears (4217) are connected to the middle part of the left-side direction-changing shaft (4216) and the end of the transmission main shaft (4211), and a belt drive wheel (4212) is connected to the end of the left-side direction-changing shaft (4216), and the belt drive wheel (4212) slides in contact with the outer wall of the double-sided transmission belt (4215).

6. A printing ink simulation wear resistance detector according to claim 5, characterized in that: The pressure platform transmission group (43) comprises a transmission plate (431), the transmission plate (431) slides on both sides of the bottom of the detection platform (2), symmetrical first tooth plates (432) are fixed on both sides of the top surface of the transmission plate (431), the first tooth plates (432) are meshed with the bottom of the second gear (4218) for transmission, an L-shaped transmission slide plate (433) is fixed in the middle of the bottom surface of the transmission plate (431), the other end of the L-shaped transmission slide plate (433) extends to the bottom of both sides of the pressure regulating platform (6), and a second tooth plate (434) is fixed on the top surface of one end of the L-shaped transmission slide plate (433) away from the transmission plate (431), and the second tooth plate (434) is connected to the height adjustment group (44) in transmission connection.

7. A printing ink simulation wear resistance detector according to claim 6, characterized in that: The height adjustment group (44) comprises a cam rod (441), the cam rod (441) rotates on both sides of the bottom of the pressure regulating platform (6), the outer wall of the cam rod (441) is in contact with the bottom surface of the pressure regulating platform (6), the center of the cam rod (441) is rotatably connected with a telescopic adjustment gear (442), the middle of the cam rod (441) is provided with staggered driving tooth plates (443), the staggered positions of the driving tooth plates (443) are meshed with the telescopic adjustment gear (442), a matching ratchet (444) is fixed to one end of the driving tooth plate (443) away from the telescopic adjustment gear (442), and parallel third gears (445) are provided at both ends of the cam rod (441), and a matching ratchet (445) is provided at the center of the third gear (445). The mating ratchet (444) is provided with a driving push rod (447) at the center of one end of the mating ratchet (444). The driving push rod (447) is fixed to the pressure regulating driving button (7) at one end of the mating ratchet (444). The cam rod (441) is provided with a mating limiting tooth (448) at both ends near the third gear (445). The mating ratchet (444) is limitedly slid inside the mating limiting tooth (448). A receiving slide groove (449) is provided inside the mating limiting tooth (448). When the pressure regulating driving button (7) is pushed, the mating ratchet (444) is received inside the receiving slide groove (449).

8. The printing ink simulation wear resistance detector according to claim 5, characterized in that: The pressing assembly (5) comprises a support seat (51), wherein the support seat (51) is provided with two symmetrical groups, wherein the support seat (51) is symmetrically fixed on both sides of the top surface of the detection platform (2), wherein the inner side of the support seat (51) is rotatably connected to a fourth gear (52), wherein a pressing convex rod (53) is connected between the fourth gears (52), wherein the outer wall of the pressing convex rod (53) abuts against the top surface of the detection platform (2), and the fourth gear (52) is meshed with the second gear (4218) for transmission.

9. A printing ink simulation wear resistance detector according to claim 1, characterized in that: Symmetrical limit blocks (61) are fixed to the outer walls on both sides of the voltage regulating platform (6); symmetrical lifting limit grooves (62) are provided at the position where the detection platform (2) is connected to the voltage regulating platform (6); the limit blocks (61) slide in a limited manner inside the lifting limit grooves (62); a downward pressure spring (63) is fixed on the upper side of the lifting limit grooves (62); and the bottom surface of the downward pressure spring (63) is fixed to the top surface of the limit block (61).

10. The printing ink simulation wear resistance detector according to claim 1, characterized in that: Symmetrical fixing grooves (81) are provided on both sides of the top of the sliding friction block (8), a convex fixing shaft (82) is rotatably connected to the inner side of the fixing groove (81), the outer wall of the convex fixing shaft (82) abuts against the inner wall of the fixing groove (81), a center shaft (83) is fixed to one end of the convex fixing shaft (82), one end of the center shaft (83) extends to the outside of the sliding friction block (8), a driving column (84) is vertically slidably penetrated at one end of the center shaft (83) located on the outside of the sliding friction block (8), and counterweight balls (85) are connected to both ends of the driving column (84).

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