CN2529240Y

CN2529240Y - Machine for investigating plastic package

Info

Publication number: CN2529240Y
Application number: CN 02206107
Authority: CN
Inventors: 赵丽
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-02-26
Filing date: 2002-02-26
Publication date: 2003-01-01
Anticipated expiration: 2012-02-26

Abstract

The utility model provides a detecting and controlling constant-temperature stacking machine for investigating plastic package, which is designed in order to solve the problem of no special detection for such diction and inaccurate detection. The utility model has the following structure: the inside of a box body is provided with a top plate and a side steel plate of a bearing plate; the box body and a protection plate of the box body form a ventilation channel. One end of the box body is provided with an electric heater and an axial flow fan; the top layer of the box body is provided with a cylinder. The lower end of a piston rod of the cylinder is connected with a pressure-boosting disc through a pressure sensor; a displacement sensor is arranged beside the piston rod. The air inlet pipe and the air outlet pipe of the cylinder are communicated with a cylinder control mechanism. The device uses hot air circulation to make a uniform temperature field, and uses a cylinder as a loading implementation mechanism to do real-time detection for deformation of a package; and the utility model transmits detection data to a computer control system so as to directly display or print the test results; the device can accurately test performances and qualities of a package in time.

Description

Constant temperature stacking test machine

The utility model relates to a kind of package checkout equipment, a kind of specifically constant temperature stacking test machine that Plastic Drum, a jar class package are carried out anti-bulk property detection.

A kind of accumulating Performance Detection of Plastic Drum, jar class package is called stacking test, promptly in a room, is heated to set point of temperature (40 ℃) with Electric stove or heating installation, and the ceiling fan pectinid is installed on the roof, makes indoor temperature reach even.Then Plastic Drum, jar above place dull and stereotyped, dull and stereotyped above placement weight (as counterweight, steel plate, cement block etc.), reach the pile requirement.Arrive after the official hour, package is tested, see if there is that distortion is collapsed or phenomenon such as damage takes place.The major defect of this stacking test: the one, temperature control precision is lower, and temperature fluctuation is big, and temperature is inhomogeneous, and well heater has radiation heat to package, makes the package surface temperature higher, and does not meet the stacking test requirement.The 2nd, need under high ambient conditions, manually load lotus, environmental baseline is poor, and labour intensity is big, and because of container collapses security incident takes place.The 3rd, when loading package there is impact, do not meet test condition; The 4th, the comprehensive deformation amount during package loaded can not detect, and just can not determine the package deformation data sometimes, and whether package is judged the qualified difficulty of bringing.

The purpose of this utility model just provides a kind of stacking test machine of special use, to overcome many deficiencies of existing detection method and means, satisfies the requirement that package detects, and the performance index of package are detected accurately.

The utility model is achieved in that the casing that this testing machine has a forward to open the door, and top board, bearing plate and edge-on steel plate are housed in the casing, forms upright ventiduct between steel plate and the box side, and electric heater and axial flow blower wherein are housed.Form ventiduct down between the air vent that distributes on the bearing plate, itself and box bottom.Form between top board and the casing top layer and go up ventiduct, be distributed with air vent on the top board.On the casing top layer cylinder is installed, the lower end of its piston rod connects pressurization disk by pressure transducer.On the piston rod next door displacement transducer is housed, the air inlet pipeline of cylinder is communicated with cylinder control mechanism, and the electrical apparatus control circuit of this device and the output of each sensor all are connected on the Control System of Microcomputer, carry out Comprehensive Control by Control System of Microcomputer.During work, put into package on the bearing plate of case by the casing main entrance, the pass starts electric heater and axial flow blower behind the door, and hot blast enters in the casing by the air vent that founds ventiduct, go up on ventiduct and the top board, gets back to upright ventiduct by bearing plate ventilating opening and following ventiduct again.This hot air circulation form has realized balanced ventilation and even return air, can make box house reach predetermined temperature soon, and the temperature field evenly, the temperature ripple disable.Simultaneously edge-on steel plate cuts off electric heater and test space, has prevented the radiation heat of well heater to package effectively, has satisfied testing requirements.Cylinder is down stretched piston rod under the control gear effect, make pressurization disk be pressed in the top of package, detects pressurization disk by pressure transducer the pressure of package is regulated and control the size of pile weight, reaches the regulation requirement.At this moment, can continuously detect by the deformation of displacement transducer to package.Because adopt the cylinder pressurization to load, the personnel that saved enter the indoor work of moving weight of hot test, make experimental safe, laborsaving.Simultaneously the deflection for package can detect in real time, and will detect data transmission in Control System of Microcomputer, thereby shows intuitively or print test situation, determines the whether qualified of package timely and accurately.

The utility model can also be realized like this; Be connected to laminated spring on pressurization disk, the joint ball piece is connected between pressure transducer and the laminated spring.Owing to insert the joint ball piece, pressurization disk and laminated spring are rotated around multi-directional ball with connecing piece, realized that pressurization disk changes with the distortion of package, so just can detect the comprehensive deformation amount of package, remedied the deficiency of original detection mode.Adopt the laminated spring power transmission, do not have impact when having realized adding load, meet the detection requirement of stacking test, improved detection accuracy.

The employed displacement transducer of the utility model can adopt photoelectric sensor etc., and a kind of preferably mode is to adopt grating speed (angle) sensor, on the rotation axis of this sensor friction pulley is installed.Friction pulley and piston rod side fit.When piston rod has upper and lower displacement, drive friction pulley and rotate, by grating speed (angle) sensor, can send the electric signal of change in displacement to Control System of Microcomputer, thereby demonstrate the deflection of package.

Below in conjunction with accompanying drawing the utility model is further described.

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the structural representation of cylinder control mechanism.

As shown in Figure 1, the casing of this testing machine is welded into hexahedral framework 15 with channel-section steel and angle steel, the fixedly connected insulation backplate 4 in the outside, the front frame of leaving a door unlocked, peace thermal insulating door thermally insulated door.The insulation casing of forming sealing thus.Four crossbeams are respectively arranged at top and bottom at framework 15, and the crossbeam two ends are supported with two channel-section steels.Cylinder 7 is installed between top cross-bar, and fixing top board 5 is placed bearing plate 16 on the base cross members below.Form between top board 5 and the casing upper guard board 4 and go up ventiduct 6, form ventiduct 17 down under bearing plate 16 and the casing between the backplate 4.The left side of framework 15 is fixed with edge-on steel plate 3, forms upright ventiduct 18 between the backplate 4 of itself an and casing left side.Electric heater 1, top installation shaft flow fan 2 are installed at upright ventiduct 18 middle parts.On top board 5 and bearing plate 16, be processed with uniform air vent.During work, axial flow blower rotates, and the heat that electric heater 1 is produced passes through upright ventiduct 18 and last ventiduct 6, passes top board 5 balanced ventilation in casing.By bearing plate 16 and following ventiduct 17 even return air, realize hot air circulation again.

This device is the load and execution element with cylinder 7.10 times termination pressure transducers 11 of the piston rod of cylinder 7, the pressure transducer lower end connects joint ball piece 12.Connect the middle part that piece 12 is connected laminated spring 13, the two ends of laminated spring 13 are fixed on the pressurization disk 14.Pressurization disk 14 and laminated spring 13 can rotate around multi-directional ball with connecing piece.Be positioned on the bearing plate 16 by side package 23, drive 14 pairs of packages 23 of pressurization disk by cylinder piston rod and pressurize.

Among Fig. 1, at the casing top layer three cylinders 7 are installed, the piston-rod lower end of each cylinder all is connected to a pressurization disk 14.So just make full use of the useful space and a temperature uniform mechanism in the casing, simultaneously three packages are detected.Can improve detection efficiency thus, improve usage ratio of equipment.

As shown in Figure 2, cylinder control mechanism is to drive reduction valve 19 by stepper motor (perhaps servomotor) 20, and air inlet pipeline 21 connects reduction valve 19 and reversal valve 22, and two interfaces of reversal valve 22 are connected by the porting of pipeline with cylinder 7 respectively.Utilize the positive and negative rotation of reduction valve 19 handles in the stepper motor 20 control cylinder air inlet pipelines, can realize the automatic adjustment of on-load pressure, required experimental test pressure, and can guarantee to add the even of load to reach tested package.

Among Fig. 1, pressure transducer 11 is contained between pressurization disk 14 and the piston rod 10.When cylinder loaded, the pressure transducer compressive deformation had electric signal output, with detected pressures.Piston rod 10 other dress grating speed (angle) sensors 9, sensor friction pulley 8 rubs mutually with piston rod.When piston rod 10 stretched out, sensor friction pulley 8 rotated, and pulse electrical signal output is arranged, and can realize displacement measurement during work, detected the deflection of package 23.After each parameter such as the temperature that Control System of Microcomputer is gathered sensing element, pressure, deflection receives, control automatically, show each trial curve and test figure, and print record or report.

Claims

1, a kind of constant temperature stacking test machine, it is characterized in that the casing (4 that this testing machine has a forward to open the door, 15), top board (5) is housed in the casing, bearing plate (16) and edge-on steel plate (3), form upright ventiduct (18) between steel plate (3) and the boxboard side plate, electric heater (1) and axial flow blower (2) wherein are housed, bearing plate is distributed with air vent on (16), form ventiduct (17) down between itself and the box bottom, form between top board (5) and the casing top layer and go up ventiduct (6), be distributed with air vent on the top board, cylinder (7) is installed on the casing top layer, the lower end of its piston rod (10) connects pressurization disk (14) by pressure transducer (11), on piston rod (10) next door displacement transducer is housed, the intake and exhaust pipeline of cylinder (7) is communicated with cylinder control mechanism.

2, constant temperature stacking test machine according to claim 1 is characterized in that being connected to above the heating plate (14) laminated spring (13), and joint ball piece (12) is connected between pressure transducer (11) and the laminated spring (13).

3, constant temperature stacking test machine according to claim 1, it is characterized in that described displacement transducer is grating speed (angle) sensor (8), friction pulley (8) is installed on the rotation axis of this sensor, and friction pulley (8) fits with piston rod (10) side.

4, constant temperature stacking test machine according to claim 1 is characterized in that at the casing top layer three cylinders (7) being installed, and the piston-rod lower end of each cylinder all is connected to a pressurization disk (14).

5, constant temperature stacking test machine according to claim 1 is characterized in that cylinder control mechanism is to drive reduction valve (19) by stepper motor (20), and air inlet pipeline (21) connects reduction valve (19) and reversal valve (22).Two interfaces of reversal valve (22) are connected by the porting of pipeline with cylinder (7) respectively.