CN110274828A - A kind of compression testing machine for cardboard box - Google Patents

A kind of compression testing machine for cardboard box Download PDF

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Publication number
CN110274828A
CN110274828A CN201910664131.2A CN201910664131A CN110274828A CN 110274828 A CN110274828 A CN 110274828A CN 201910664131 A CN201910664131 A CN 201910664131A CN 110274828 A CN110274828 A CN 110274828A
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CN
China
Prior art keywords
sprocket wheel
testing machine
block
pedestal
cardboard box
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CN201910664131.2A
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Chinese (zh)
Inventor
田君
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Dongguan University of Technology
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Dongguan University of Technology
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Priority to CN201910664131.2A priority Critical patent/CN110274828A/en
Publication of CN110274828A publication Critical patent/CN110274828A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/02Details
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

The invention discloses a kind of compression testing machine for cardboard boxes, including pedestal, the pedestal side is fixed with decelerating motor, the output shaft of the decelerating motor is connected with the first sprocket wheel, first sprocket wheel is connected with the second sprocket wheel by chain drive, second sprocket wheel is connected with third sprocket wheel by chain drive, key connection has screw rod on second sprocket wheel and third sprocket wheel, the upper end end of two screw rods is rotatably connected to crossbeam by bearing, equal screw-driven is connected with transmission nut on two screw rods, the transmission nut is embedded in the two sides of movable block, the intermediate downside of the movable block is fixed with pressure sensor, the lower end of the pressure sensor, which is in close contact, upper holder block, hold-down mechanism is provided between the upper holder block and movable block, the lower end of the upper holder block is provided with lower lock block engaged therewith, the lower lock block passes through Bolt is fixed on the base.Realize that structure is simple to the compression test of carton, convenient for operation, manufacturing cost is low.

Description

A kind of compression testing machine for cardboard box
Technical field
The invention belongs to compression testing machine for cardboard box technical fields, and in particular to a kind of compression testing machine for cardboard box.
Background technique
With the progress of enterprise, carton has quite been widely applied as packaging material.Meanwhile packaging has become To influence a big factor of enterprise development, therefore the performance of carton is also increasingly focused on, corresponding compression testing machine for cardboard box makes It is more and more common with also starting.The compressive property test of carton needs to meet certain structural requirement, the case where meeting the requirements Under, the quality of box paper product is tested by a series of pressure testing, and corresponding test data is accurately obtained by sensor, As a result it can be used as factory to stack the important references of finished product packing height or design the important evidence of packing case, thus carton compression Testing machine is the common detecting instrument of carton manufacturing enterprise.
Structure is complicated mostly for the compression testing machine for cardboard box of factory at present, cumbersome, and manufacturing cost is high, and power transmission Mode is lost greatly, causes energy waste, for this purpose, easy to operate, the carton that low energy consumption is anti-it is proposed that a kind of structure is simple Testing machine is pressed to solve problems of the prior art.
Summary of the invention
The purpose of the present invention is to provide a kind of compression testing machine for cardboard boxes, to solve to propose existing work in above-mentioned background technique Structure is complicated mostly for the compression testing machine for cardboard box of factory, cumbersome, and manufacturing cost is high, and power transmission mode is lost greatly, makes At energy waste, for this purpose, it is proposed that a kind of structure is simple, easy to operate problem.
To achieve the above object, present invention employs following technical solutions:
A kind of compression testing machine for cardboard box, including pedestal, the upper end side of the pedestal are fixed with electric cabinet, the electric cabinet Inner bottom be fixed with decelerating motor, the output shaft end key connection of the decelerating motor has the first sprocket wheel, first chain Wheel is located at the inside of pedestal, and the side of first sprocket wheel is connected with the second sprocket wheel by chain drive, and second sprocket wheel is remote Side from the first sprocket wheel is connected with third sprocket wheel by chain drive, there is key connection on second sprocket wheel and third sprocket wheel The downside of screw rod, the screw rod is rotatably connected to mounting blocks by bearing, and the mounting blocks are fixed on the upper end of pedestal, two institutes The upper end end for stating screw rod is rotatably connected to crossbeam by bearing, and screw-driven is connected with transmission spiral shell on two screw rods Mother, the transmission nut are embedded in the two sides of movable block, and the intermediate downside of the movable block is fixed with pressure sensor, the pressure The lower end of force snesor, which is in close contact, upper holder block, and hold-down mechanism, the upper pressure are provided between the upper holder block and movable block The lower end of block is provided with lower lock block engaged therewith, and the lower lock block is bolted on pedestal.
Preferably, the hold-down mechanism includes connecting plate, and there are two the connecting plate settings and is symmetrically fixed on movable block Lower end two sides, through there is connecting rod, the connecting rod is fixed on upper holder block for the two sides of the connecting plate.
Preferably, the upper end end of the connecting rod is fixed with baffle, is provided with spring between the baffle and upper holder block, The spring is socketed in connecting rod.
Preferably, guide rod, the outside of the guide rod are fixedly connected between the both ends and mounting blocks of the crossbeam Guide sleeve is slidably connected, the guide sleeve is embedded in the two sides of movable block.
Preferably, it is provided with protective cover on the outside of the guide rod and screw rod, upper end and the crossbeam of the protective cover are fixed Connection, lower end is fixedly connected with pedestal.
Preferably, the upper end of the upper holder block is fixed with cover board, and the centre of the cover board is provided with via hole, and the pressure passes The lower end of sensor is in close contact through via hole and upper holder block.
Preferably, the upper surface of described lower lock block is provided with centering graduation mark.
Preferably, the intermediate side of first sprocket wheel and the second sprocket wheel is provided with tightener sprocket, the tightener sprocket position In the inside of pedestal, the tightener sprocket is connect with base rotation.
Preferably, the intermediate two sides of second sprocket wheel and third sprocket wheel are also equipped with tightener sprocket.
Preferably, floor is provided on the side wall of the inside circumference of the pedestal.
Technical effect and advantage of the invention: a kind of compression testing machine for cardboard box proposed by the present invention, compared with prior art, It has the advantage that
1, the present invention drives the rotation of the first sprocket wheel by decelerating motor, and then the first sprocket wheel passes through the second sprocket wheel of chain-driving Rotation, and then the second sprocket wheel is rotated by chain-driving third sprocket wheel, and then the second sprocket wheel and third sprocket wheel drive pedestal simultaneously The screw rod of two sides simultaneously, at the same speed, rotating Vortex, and then screw rod driving transmission nut moves up and down along screw rod, and then transmission nut Movable block is driven to move up and down along guide rod, and then movable block drives upper holder block to move up and down, upper holder block drives pressure sensor It moving downward, and then upper holder block compresses carton with lower lock block cooperation, pressure sensor is collected pressure data and is analyzed, Structure is simple, and manufacturing cost is low, easy to operate, and power transmission loss is few;
2, the present invention runs through connecting plate by being fixed with connecting rod, the upper end of connecting rod on upper holder block, and connecting plate is fixed On movable block, the top of connecting rod is fixed with baffle, and spring is provided between baffle and connecting plate, and spring is socketed in connecting rod On, it keeps upper holder block to be bonded completely with carton upper surface under the elastic force effect of spring, makes carton uniform force, meet carton Practical the case where stacking, improve the accuracy of measurement data.
Detailed description of the invention
Fig. 1 is perspective view of the invention;
Fig. 2 is structural schematic diagram of the invention;
Fig. 3 is enlarged drawing at A of the invention;
Fig. 4 is enlarged drawing at B of the invention;
Fig. 5 is chassis interior structure chart of the invention;
Fig. 6 is upper holder block structure chart of the invention;
Fig. 7 is control principle system block diagram of the invention;
Fig. 8 is the circuit diagram of governor circuit;
Fig. 9 is the driver circuit schematic diagram of decelerating motor;
Figure 10 is the circuit diagram of display module.
Appended drawing reference: 1, pedestal;2, electric cabinet;3, decelerating motor;4, the first sprocket wheel;5, the second sprocket wheel;6, third sprocket wheel; 7, screw rod;8, mounting blocks;9, crossbeam;10, transmission nut;11, movable block;12, pressure sensor;13, upper holder block;14, it compresses Mechanism;141, connecting plate;142, connecting rod;143, baffle;144, spring;15, lower lock block;16, guide rod;17, guide sleeve;18, Protective cover;19, cover board;20, via hole;21, centering graduation mark;22, tightener sprocket;23, floor.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Herein Described specific embodiment is only used to explain the present invention, is not intended to limit the present invention.Based on the embodiments of the present invention, Every other embodiment obtained by those of ordinary skill in the art without making creative efforts, belongs to this hair The range of bright protection.
The present invention provides a kind of compression testing machine for cardboard box as shown in figures 1 to 6, including pedestal 1, the upper end of the pedestal 1 Side is fixed with electric cabinet 2, and the inner bottom of the electric cabinet 2 is fixed with decelerating motor 3 because equipment need very slowly under Reduction of speed degree, thus need to use decelerating motor 3, the output shaft end key connection of the decelerating motor 3 has the first sprocket wheel 4, described First sprocket wheel 4 is located at the inside of pedestal 1, and the side of first sprocket wheel 4 is connected with the second sprocket wheel 5 by chain drive, described Side of second sprocket wheel 5 far from the first sprocket wheel 4 is connected with third sprocket wheel 6, second sprocket wheel 5 and third chain by chain drive Key connection has screw rod 7 on wheel 6, and the downside of the screw rod 7 is rotatably connected to mounting blocks 8 by bearing, and the mounting blocks 8 are fixed In the upper end of pedestal 1, the upper end ends of two screw rods 7 is rotatably connected to crossbeam 9 by bearing, on two screw rods 7 Equal screw-driven is connected with transmission nut 10, and the transmission nut 10 is embedded in the two sides of movable block 11, the movable block 11 Intermediate downside is fixed with pressure sensor 12, and the lower end of the pressure sensor 12, which is in close contact, upper holder block 13, the upper pressure Hold-down mechanism 14 is provided between block 13 and movable block 11, the lower end of the upper holder block 13 is provided with lower lock block engaged therewith 15, the lower lock block 15 is bolted on pedestal 1.Sky rack-like is made in upper holder block 13 and lower lock block 15, both meets work It is required, and saves material, and reach light, the requirement being easily installed.
Preferably, the hold-down mechanism 14 includes connecting plate 141, there are two the settings of connecting plate 141 and symmetrical fixed In the lower end two sides of movable block 11, through there is connecting rod 142, the connecting rod 142 is fixed on for the two sides of the connecting plate 141 On briquetting 13.
By using above-mentioned technical proposal, the connection of connecting plate 141 and movable block 11, structure are realized by connecting rod 142 Simply, at low cost.
Preferably, the upper end end of the connecting rod 142 is fixed with baffle 143, between the baffle 143 and upper holder block 13 It is provided with spring 144, the spring 144 is socketed in connecting rod 142.
By using above-mentioned technical proposal, keep upper holder block 13 and carton upper surface complete under the elastic force effect of spring 144 Full fitting, the case where making carton uniform force, meet the practical stacking of carton, improves the accuracy of measurement data.
Preferably, being fixedly connected to guide rod 16, the guide rod 16 between the both ends and mounting blocks 8 of the crossbeam 9 Outside slidably connect guide sleeve 17, the guide sleeve 17 is embedded in the two sides of movable block 11.
By using above-mentioned technical proposal, realizes the limit to movable block 11, be moved easily fixing up and down for block 11, simultaneously Support is fixed, improves the fastness of device is realized to crossbeam 9.
Preferably, the outside of the guide rod 16 and screw rod 7 is provided with protective cover 18, the upper end of the protective cover 18 and cross Beam is fixedly connected, and lower end is fixedly connected with pedestal 1.
By using above-mentioned technical proposal, the setting of protective cover 18 is isolated from the outside world guide rod 16 and screw rod 7, avoids The external world enters, and influences to work normally, while staff being avoided to contact with them, injures body, improves safety.
Preferably, the upper end of the upper holder block 13 is fixed with cover board 19, the centre of the cover board 19 is provided with via hole 20, institute The lower end for stating pressure sensor 12 is in close contact through via hole 20 and upper holder block 13.
By using above-mentioned technical proposal, contact pressure sensor 12 directly with upper holder block 13 rather than on upper holder block 13 Cover board 19 contact because cover board 19 with upper holder block 13 be bonded when, some gaps are unavoidably had, if pressure sensor 12 is not It is directly contacted with upper holder block 13, then might have biggish measurement error.
Preferably, the upper surface of described lower lock block 15 is provided with centering graduation mark 21.
By using above-mentioned technical proposal, centering graduation mark 21 can be carried out rectangle and circular packaging material pair In, the purpose of centering is to more meet design stacking, only when cabinet or oil drum are located at 15 center of lower lock block, upper pressure Block 13 can just guarantee that pressure is in carton or oil drum center when pushing, after all, the whether generation of pressure or storehouse Stacking during storage, pressure direction be all mostly center vertically downward.
Preferably, the intermediate side of first sprocket wheel 4 and the second sprocket wheel 5 is provided with tightener sprocket 22, the tensioning chain Wheel 22 is located at the inside of pedestal 1, and the tightener sprocket 22 is rotatablely connected with pedestal 1,
By using above-mentioned technical proposal, since the chain conveyer of the first sprocket wheel 4 and the second sprocket wheel 5 is in horizontally disposed, institute To need tightener sprocket 22 to be tensioned.
Preferably, the intermediate two sides of second sprocket wheel 5 and third sprocket wheel 6 are also equipped with tightener sprocket 22.
By using above-mentioned technical proposal, due to the chain conveyer of the second sprocket wheel 5 and third sprocket wheel 6 be also at it is horizontally disposed, So being also required to the tensioning of tightener sprocket 22, two, because span is larger herein, two tightener sprockets are arranged in tightener sprocket 22 herein 22 work are more stable and reliable.
Preferably, being provided with floor 23 on the side wall of the inside circumference of the pedestal 1.
By using above-mentioned technical proposal, the setting of floor 23 improves the fastness and stability of pedestal 1.
1. known conditions
The weight of workbench
M=250kg
Moving speed of table
V=12mm/s
Wish the service life
Lh=30000 hours
Decelerating motor revolving speed
N=1500 (r/min)
Decelerating motor reduction ratio
I=10
Ball screw coefficient of friction
μ=0.02
2, ball screw accuracy class
Due to need to only guarantee that top board smoothly declines, so ball screw accuracy class is of less demanding, required rolling rolling Ballscrew, the optional C8 of accuracy class
3, ball screw lead
Workbench slowly declines, the ball screw for selecting lead small
According to ball screw nominal lead,
Selected L=5mm
4, basic dynamic load rating
Average load Fm:
At the uniform velocity rise
Fa1=mg+ μm of g=250x9.8+0.02x250x9.8=2499N
Uniform descent
Fa2=mg- μm of g=250x9.8-0.02x250x9.8=2401N
Average load
Mean speed:
Basic dynamic load rating
Compression testing machine for cardboard box reality of work needs the time not grow, and takes net service life time Lh0=15000 hours, take fortune Row coefficient fw=1.1
5, the determination of ball screw outer diameter
The outer diameter of lead and basic dynamic load rating selection ball screw.
Ball screw type selecting table
According to upper table, select outer diameter for the ball screw of 25mm
6, ball screw length
According to contour size of the unit(s), according to actual needs, selecting screw rod length is 1000mm
To sum up, screw rod model R25-5T1-2FSDC-1000-1500-0.018
7, axial load is allowed to check
Allow axial load
Much larger than maximum axial 2499N, meet the requirements
Permissible revolution is checked
Permissible revolution
Much larger than screw rod revolving speed 144r/min, meet the requirements
The design of decelerating motor
1, known conditions
Workbench gross mass
M=250kg
The movement speed of workbench
V=12mm/s
The diameter of axle of ball screw
D=25mm
The lead of Gun Zhu Luo Wilsonii
L=5mm
Decelerating motor revolving speed
N=1500r/min
2, the determination of decelerating motor reduction ratio
Due to the downward motion that the main movement mode of compression testing machine for cardboard box is top board, downward motion needs to guarantee It is slow and reliable and stable, therefore the rotation of screw rod must slowly be moved.Motor drives screw rod rotation by chain conveyer In the process, chaindriven transmission ratio is 1.1, and chain conveyer at this time only plays the role of the big power transmitting of span, and hardly The decelerating effect to motor speed is played, therefore, to ensure that the output shaft of motor is the slow-speed of revolution, decelerating motor should be selected.
Revolving speed n1 needed for geared motor output shaft
Decelerating motor reduction ratio
Choose reduction ratio i=10
3, the determination of decelerating motor power
According to power P 1=66.624w needed for screw rod
Obtain power needed for chain conveyer
To obtain power needed for motor output shaft
P3=P2=69.4w
According to required power and the rated power of motor,
Selection power of motor is 100w
4, total torque is loaded
According to required power, reduction ratio, torque is considered
To sum up, bright nation's brand decelerating motor is chosen, motor model is the chaindriven design of CV100- (3-50) S
1, the selection of sprocket wheel
Taking roller chain pinion gear is 25, since chain conveyer purpose mainly drives the rotation of two screw rods, for transmission ratio requirement Less, so taking gear wheel is 27, to guarantee that roller chain staggeredly engages, the roller chain service life is improved, transmission ratio is 1.1 at this time.
2, the selection of roller chain
The calculating P1 of screw rod power:
Screw rod torque
Consider safety coefficient=2,
Screw rod angular speed
Power needed for bar
P1=w=4.8 π=66.624w
The calculating P2 of roller chain power:
Roller chain drives efficiency=0.96
Power needed for roller chain
Active wheel speed
N=144x 1.1=158.4r/min
As shown in Figure 7 and Figure 8, the connection of the governor circuit in electric cabinet 2 is equipped with and is arranged in 2 outer surface of electric cabinet Touch display screen, the governor circuit are STM32F407VET6 single-chip microcontroller and peripheral circuit with telecommunication circuit, are connect in motor Mouthful aspect, includes up to 17 timers, wherein 16 advanced timers of 2 special three-phase motor control design cases, 4 can be with It is common to the general timer interface of Hall and incremental encoder, each timer has 4 input captures, 4 outputs Capture, PWM output function have collected the communication interfaces such as CAN, UART, SPI, I2C, high speed USB, Ethernet in communication aspects, Simulation numeral sampling aspect, is integrated with the A/D converter of 3 12,2.4MSPS.In terms of memory, the Flash containing 512Kb The SRAM program running space of program storage and 192Kb, these conditions are sufficient for decelerating motor vector control function, do not need The other storages of addition or communication chip, it is often more important that the chip of its LQFP100 encapsulation only has the size of 14 × 14 × 3mm.
As shown in figure 9, decelerating motor is connect by frequency converter with governor circuit, using when frequency converter, it can be achieved that soft start, Reduce dash current.The defencive function of frequency converter is extremely strong, can detect various problems at any time, show failure classes in the process of running Not, and output voltage is cut off immediately.This " self-protection " function not only protects inverter, but also motor is protected to be hardly damaged. After comprehensively considering and comparing, this system determines to use Delta VFD-007-M-43 model frequency converter.
As shown in Figure 10, display module is displayed data using the liquid crystal that one piece of resolution ratio is 128*64, and the part is straight It connects and is powered (V_BAT) using 5V voltage provided by battery, use I with main control module chip2The communication mode of C is counted According to interaction.SDA, SCK pin are data communication pin, the data transmission being mainly responsible between display module and main control chip.CD draws Foot is Liquid Crystal Module instruction, data selection interface, Liquid Crystal Module can be made to identify by changing the height of the level on the pin What main control chip transmitted is the data of control instruction or required display.RES pin is pin resetting pin, keeps the normal work of pin When making, which need to be set to low level just and can guarantee that module is normally shown.CS pin be display module chip select pin, only when When the pin is set to low level, display module just can keep normal communication with main control module.BL interface is mainly by main control chip Control to display module backlight switch, when being set to high level, display module just can normally open backlight.
Working principle: being put into trial product to be measured on lower lock block 15 first, and product is put into down according to centering graduation mark 21 The center of briquetting 15 starts decelerating motor 3, and then decelerating motor 3 drives the rotation of the first sprocket wheel 4, and then the first sprocket wheel 4 is logical The rotation of the second sprocket wheel of chain-driving 5 is crossed, and then the second sprocket wheel 5 is rotated by chain-driving third sprocket wheel 6, and then the second sprocket wheel 5 Drive that the screw rod 7 of 1 two sides of pedestal is synchronized, rotating Vortex simultaneously with third sprocket wheel 6, and then screw rod 7 drives transmission nut 10 along silk Bar 7 moves downward, and then transmission nut 10 drives movable block 11 to move downward along guide rod 16, and then movable block 11 drives and presses Block 13 moves downward, and upper holder block 13 drives pressure sensor 12 to move downward, until the product on upper holder block 13 and lower lock block 15 Contact;
By being fixed with connecting rod 142 on upper holder block 13, connecting plate 141, connecting plate are run through in the upper end of connecting rod 142 141 are fixed on movable block 11, and the top of connecting rod 142 is fixed with baffle 143, are provided between baffle 143 and connecting plate 141 Spring 144, spring 144 are socketed in connecting rod 142, keep the upper of upper holder block 13 and product under the elastic force effect of spring 144 Surface is bonded completely, makes product uniform force;
Continue that upper holder block 13 is driven to move downward, and then upper holder block 13 compresses product with the cooperation of lower lock block 15, presses Force snesor 12 collects pressure data and feeds back to control panel, carries out the control of a series of input and output, thus once come can The limiting pressure or the corresponding allowable pressure value of deformation degree for measuring product, decelerating motor 3 reversely turns after detection It is dynamic, and then upper holder block 13 travels upward and out product along guide rod 16, entire detection process finishes.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention, Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features, All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention Within protection scope.

Claims (10)

1. a kind of compression testing machine for cardboard box, including pedestal (1), it is characterised in that: the upper end side of the pedestal (1) is fixed with electricity It controls case (2), the inner bottom of the electric cabinet (2) is fixed with decelerating motor (3), the output shaft end of the decelerating motor (3) Key connection has the first sprocket wheel (4), and first sprocket wheel (4) is located at the inside of pedestal (1), and the side of first sprocket wheel (4) is logical It crosses chain drive to be connected with the second sprocket wheel (5), second sprocket wheel (5) passes through chain drive far from the side of the first sprocket wheel (4) It is connected with third sprocket wheel (6), key connection has screw rod (7) on second sprocket wheel (5) and third sprocket wheel (6), the screw rod (7) Downside be rotatably connected to mounting blocks (8) by bearing, the mounting blocks (8) are fixed on the upper end of pedestal (1), two silks The upper end end of bar (7) is rotatably connected to crossbeam (9) by bearing, and equal screw-driven is connected with biography on two screw rods (7) Dynamic nut (10), the transmission nut (10) are embedded in the two sides of movable block (11), and the intermediate downside of the movable block (11) is solid Surely have pressure sensor (12), the lower end of the pressure sensor (12), which is in close contact, upper holder block (13), the upper holder block (13) be provided between movable block (11) hold-down mechanism (14), the lower end of the upper holder block (13) be provided with it is engaged therewith under Briquetting (15), the lower lock block (15) are bolted on pedestal (1).
2. a kind of compression testing machine for cardboard box according to claim 1, it is characterised in that: the hold-down mechanism (14) includes connecting Fishplate bar (141), there are two connecting plate (141) settings and is symmetrically fixed on the lower end two sides of movable block (11), the connection Through having connecting rod (142), the connecting rod (142) is fixed on upper holder block (13) for the two sides of plate (141).
3. a kind of compression testing machine for cardboard box according to claim 2, it is characterised in that: the upper end of the connecting rod (142) End is fixed with baffle (143), is provided with spring (144), the spring between the baffle (143) and upper holder block (13) (144) it is socketed on connecting rod (142).
4. a kind of compression testing machine for cardboard box according to claim 1, it is characterised in that: the both ends of the crossbeam (9) and peace It is fixedly connected to guide rod (16) between dress block (8), is slidably connected guide sleeve (17) on the outside of the guide rod (16), it is described Guide sleeve (17) is embedded in the two sides of movable block (11).
5. a kind of compression testing machine for cardboard box according to claim 4, it is characterised in that: the guide rod (16) and screw rod (7) it is provided on the outside of protective cover (18), the upper end of the protective cover (18) is fixedly connected with crossbeam, and lower end and pedestal (1) are solid Fixed connection.
6. a kind of compression testing machine for cardboard box according to claim 1, it is characterised in that: the upper end of the upper holder block (13) is solid Surely have cover board (19), the centre of the cover board (19) is provided with via hole (20), and the lower end of the pressure sensor (12) penetrates through Hole (20) and upper holder block (13) are in close contact.
7. a kind of compression testing machine for cardboard box according to claim 1, it is characterised in that: the upper surface of described lower lock block (15) sets It is equipped with centering graduation mark (21).
8. a kind of compression testing machine for cardboard box according to claim 1, it is characterised in that: first sprocket wheel (4) and second The intermediate side of sprocket wheel (5) is provided with tightener sprocket (22), and the tightener sprocket (22) is located at the inside of pedestal (1), and described Tight sprocket wheel (22) and pedestal (1) are rotatablely connected.
9. a kind of compression testing machine for cardboard box according to claim 8, it is characterised in that: second sprocket wheel (5) and third The intermediate two sides of sprocket wheel (6) are also equipped with tightener sprocket (22).
10. a kind of compression testing machine for cardboard box according to claim 1, it is characterised in that: the inside circumference of the pedestal (1) Side wall on be provided with floor (23).
CN201910664131.2A 2019-07-23 2019-07-23 A kind of compression testing machine for cardboard box Pending CN110274828A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113203626A (en) * 2021-04-23 2021-08-03 广东艾斯瑞仪器科技有限公司 Carton compressive strength test device with overvoltage protection

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