CN102353585A

CN102353585A - Quick clamp for tensile test of PET (polyethylene glycol terephthalate) cotton packing belt

Info

Publication number: CN102353585A
Application number: CN2011101659309A
Authority: CN
Inventors: 葛乐通; 唐娟; 沈恒龙
Original assignee: Changzhou University
Current assignee: Liyang Chang Technology Transfer Center Co., Ltd.
Priority date: 2011-06-20
Filing date: 2011-06-20
Publication date: 2012-02-15
Anticipated expiration: 2031-06-20
Also published as: CN102353585B

Abstract

The invention discloses a quick clamp for a tensile test of a PET (polyethylene glycol terephthalate) cotton packing belt. A right-lower roller wheel of a roller wheel mechanism is a fixed roller wheel; a left-lower roller wheel and an upper roller wheel are rotating roller wheels; a hold-down mechanism is a symmetrical mechanism consisting of crank sliding block mechanisms which respectively belong to the left side surface and the right side wall of a shell, and a handle for connecting the crank sliding block mechanisms; middle sections on the left side surface and the right side surface of the shell are respectively provided with a long sliding chute; an upper roller wheel shaft penetrates through the upper roller wheel and the sliding chutes, further, two ends of the upper roller wheel shaft are symmetrically connected with the lower ends of connecting rods positioned at the outer sides of the left side surface and the right side surfaces of the shell; the upper ends of the connecting rods are movably connected with a pressing rod through first pins; the head end of the pressing rod is movably connected with second pins which are fixedly connected with the left side surface and the right end surface of the shell; and the tail end of the pressing rod is respectively connected with two ends of the handle. By using the quick clamp, the PET belt can be quickly wound on the quick clamp; the mounting and the unloading of the PET belt are quite convenient and fast; and the quick clamp is a special clamp which does not damage the clamped part of the PET belt and can quickly clamp the PET belt.

Description

PET cotton tie tension test quick-speed jigs

Technical field

The present invention relates to the anchor clamps that PET (polyethylene terephthalate high polymer) cotton tie uses in carrying out tension test, be convenient to the quality of the on-the-spot PET of selective examination fast cotton tie.

Background technology

In recent years the packing of PET band is extensively adopted in domestic cotton packing beginning, and PET is a kind of high-density fiber band, is the general advanced macromolecule wrappage of international endorsement, is a kind of novel cotton packing material.At present PET is used for the also further research of needs of various environmental performances of cotton tie, for further improving the experiment quality, guarantees the accuracy of experimental data, the clamping quality of PET band is crucial when improving tension test.

At present; The PET cotton tie directly is placed in PET to be tested band to clamp in the mould holder mouth of testing machine and just carries out tension test, during tension test when carrying out tension test; The two ends that is held can rupture prior to the center section of belt, thereby can not measure the actual performance of belt.

In standard " plastic tensile method for testing performance GB/T1040-2006 ", the stretching of plastic tape is not stipulated the clamp method tested do not have specific clamping device yet.

Summary of the invention

The objective of the invention is to be prone to the deficiency destroyed earlier, a kind of tension test quick-speed jigs that can correct measurement PET cotton tie actual performance is provided for overcoming the retaining part when the tension test of PET cotton tie in the prior art.

The technical scheme that the present invention adopts is: housing connects hold-down mechanism; The epimere of housing is the long rectangular block of entity; The stage casing of housing and hypomere have a groove; Accommodate idler wheel mechanism in the groove, idler wheel mechanism is by the identical right cylinder of upper roller, left bottom roller, these three shapes of bottom right roller and the left lower shaft of left bottom roller is housed, the bottom right axle that the bottom right roller is housed is formed; Three rollers become equilateral triangle to be arranged above and below, and the bottom right roller is the roller of fixing, and left bottom roller and upper roller are the rollers that rotates, and leave the gap that adapts with the PET tape thickness between left bottom roller and the bottom right roller; A slider-crank mechanism that hold-down mechanism is respectively had by housing left and right sides face and a symmetrical mechanism that handle is formed of connecting crank slide block mechanism, the stage casing on the face of the housing left and right sides respectively has a microscler chute; Slider-crank mechanism is made up of depression bar, connecting rod and upper roller shaft, second pin, and upper roller shaft passes upper roller is connected the connecting rod in the outside that is positioned at housing left and right sides face with chute and its two ends symmetry lower end; The upper end of connecting rod and depression bar flexibly connect through first pin; Second pin of depression bar head end and affixed housing left and right sides face flexibly connects, and the depression bar end is connected with the two ends of handle respectively.

The present invention can be twined the PET band on it when tension test fast, and all easily quick to the installation and the unloading of PET band, processing ease is reliable, and result of use is good, is a kind of a kind of special fixtures that the PET strap clamp is held part and can be carried out quick-clamping of not damaging.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the present invention is done further explain;

Fig. 1 is a stereographic map of the present invention;

Fig. 2 is a main TV structure synoptic diagram of the present invention;

Fig. 3 is the right view of Fig. 2;

Among the figure: 1. testing machine chuck; 2. housing; 3. connecting rod; 4. upper roller shaft; 5. left lower shaft; 6. left bottom roller; 7.PET band; 8. bottom right roller; 9. handle; 10 bottom right axles; 11. depression bar; 12. upper roller; 13. chute; 14. first pin; 15. second pin.

Embodiment

Like Fig. 1, shown in Figure 2, the present invention mainly is made up of housing 2, hold-down mechanism and idler wheel mechanism.Housing 2 supports the installation and combination of whole part, on the housing 2 hold-down mechanism is installed.The epimere of housing 2 is the long rectangular block of entity, during as tension test by the part of testing machine chuck 1 clamping.The stage casing of housing 2 and hypomere have the groove of a symmetry, accommodate idler wheel mechanism in the groove of symmetry, and idler wheel mechanism comprises upper roller 12, left bottom roller 6 and bottom right roller 8.

Hold-down mechanism by housing 2 left and right sides faces each by the symmetrical mechanism formed of a slider-crank mechanism and handle 9; The slider-crank mechanism of housing 2 left and right sides faces is connected through a handle 9; Center section on housing 2 left and right sides faces respectively has one and is shaped as microscler chute 13, and microscler chute 13 is arranged up and down.This slider-crank mechanism is made up of depression bar 11, connecting rod 3 and upper roller shaft 4, second pin 15.Wherein, upper roller shaft 4 is central shafts of upper roller 12, and rolling with upper roller 12 is connected, and upper roller shaft 4 passes the chute 13 on upper roller 12 and housing 2 left and right sides faces, and upper roller shaft 4 slides up and down in chute 13.The two ends symmetry of upper roller shaft 4 connects the lower end of connecting rod 3; Connecting rod 3 is positioned at the outside of housing 2 left and right sides faces, and the upper end of connecting rod 3 and depression bar 11 are movably connected through first pin 14; The head end of depression bar 11 and second pin 15 flexibly connect, and second pin 15 is fixedly connected on the left and right sides face of housing 2, and second pin 15 is as the fixture that supports depression bar 11.The end of two depression bars 11 is connected with the two ends of handle 9 respectively.

Idler wheel mechanism is made up of upper roller 12, left bottom roller 6, bottom right roller 8 and upper roller shaft 4, left lower shaft 5 and bottom right axle 10, and upper roller 12, left bottom roller 6 and bottom right roller 8 these three rollers all are the identical right cylinder rollers of shape.Hypomere at housing 2 left and right sides faces is drilled with corresponding through hole; Be respectively applied for left lower shaft 5 and bottom right axle 10 are installed; Left side lower shaft 5 is parallel to each other with bottom right axle 10, is positioned at same horizontal level, and left lower shaft 5 and bottom right axle 10 are arranged on the lower left quarter and the right lower quadrant of upper roller shaft 4 respectively symmetrically; Make upper roller 12 when the position, the top of chute 13, be positioned at the center upper position of left bottom roller 6 and bottom right roller 8, just three rollers become equilateral triangle to be arranged above and below.Left side bottom roller 6 is movably arranged on the left lower shaft 5, and bottom right roller 8 is fixedly mounted on the bottom right axle 10.Bottom right roller 8 is fixing cylinder roller, and left bottom roller 6 is rotor wheels with upper roller 12.Leave certain distance between a left side bottom roller 6 and the bottom right roller 8, this distance and PET adapt with 7 thickness.The diameter of upper roller 12,

left bottom roller

6,8 three rollers of bottom right roller depends on that PET is with 7 crooked curvature.Left side lower shaft 5 flexibly connects left bottom roller 6; Roller 8 usefulness bottom right axles 10 in bottom right are fixing, and promptly left bottom roller 6 flexibly connects with left lower shaft 5 and is installed in housing 2 lower left quarters, and bottom right roller 8 is fixedly connected with bottom right axle 10 and is fixedly mounted on housing 2 right lower quadrants.

During tension test, as shown in Figure 2, earlier with PET with 7 from upwards rotating to the first half cyclotomy of upper roller 12 by up time between left bottom roller 6 and the bottom right roller 8; The gap of inserting upper roller 12 and bottom right roller 8 again gets into roller 8 inboards, bottom right; To be in upper handle 9 then and exert pressure downwards, a pair of slider-crank mechanism that drives on housing 2 two sides through handle 9 moves simultaneously, after depressing handle 9; One group of symmetry depression bar 11 moves down; One group of symmetry depression bar 11 drives a pair of symmetrical connecting rod 3 and also moves downward simultaneously, and a pair of symmetrical connecting rod 3 drives upper roller shaft 4 two ends and upper roller 12 moves down from the top of chute 13 together, upper roller 12 with PET with 7 be pressed on upper roller 12 and bottom right roller 8 the surface of contact part; At last handle 9 being pressed to PET is locked with 7 two ends fully; Compress three rollers and get final product, this moment, PET evenly contacted with upper roller 12 with 7 retained part, and PET will progressively disperse in the friction force of left bottom roller 6 and upper roller 12 with the 7 test pulling force that receive; PET is well protected with the retained part of 7 tests, has avoided retained part to influence the performance of weld zone tension test especially easily prior to the fracture of middle weld zone.

Claims

1. PET cotton tie tension test quick-speed jigs; Housing (2) connects hold-down mechanism; The epimere of housing (2) is the long rectangular block of entity; The stage casing of housing (2) and hypomere have the groove of a symmetry; It is characterized in that: accommodate idler wheel mechanism in the groove of symmetry, idler wheel mechanism is by the identical right cylinder of upper roller (12), left bottom roller (6), these three shapes of bottom right roller (8) and be provided with the left lower shaft (5) of left bottom roller (6), the bottom right axle (10) that is provided with bottom right roller (8) is formed; Three rollers become equilateral triangle to be arranged above and below; Bottom right roller (8) is the roller of fixing; Left side bottom roller (6) and upper roller (12) are the rollers that rotates, and leave the gap of being with the thickness of (7) to adapt with PET between left bottom roller (6) and the bottom right roller (8); The symmetrical mechanism that the slider-crank mechanism that said hold-down mechanism is respectively had by housing (2) left and right sides face and a handle (9) of connecting crank slide block mechanism are formed, the stage casing on the face of housing (2) left and right sides respectively has a microscler chute (13); Said slider-crank mechanism has depression bar (11), connecting rod (3), upper roller shaft (4) and second pin (15) to form, and upper roller shaft (4) passes upper roller (12) is connected the connecting rod (3) in the outside that is positioned at housing (2) left and right sides face with chute (13) and its two ends symmetry lower end; The upper end of connecting rod (3) and depression bar (11) flexibly connect through first pin (14); Second pin (15) of depression bar (11) head end and affixed housing (2) left and right sides face flexibly connects, and depression bar (11) end is connected with the two ends of handle (9) respectively.