CN203414344U - Device for obtaining cross section of leather in stretching state - Google Patents

Abstract

The utility model discloses a device for obtaining the cross section of leather in a stretching state. The device comprises an operation platform, front and rear sample clamps for clamping a leather sample, and a U-shaped groove mould for containing resin, wherein a fixing rod is arranged at one end of the operation platform; a fixed pulley is arranged at the other end of the operation platform; the front sample clamp is fixed on the fixing rod; the rear sample clamp moves round the fixed pulley through a traction steel wire to be connected with a counterweight; plastic clay seal heads are arranged at the two ends of the U-shaped groove mould. According to the device, a fiber state of the leather during stretching can be well retained through resin impregnation and curing, so that the fiber state during stretching can be conveniently obtained by observing the cross section of the leather later. The device comprises the operation platform, a clamp fixing system, a resin embedding system and a counterweight system.

Description

A kind of device that obtains extended state leather cross section

technical field

The utility model relates to a kind of preparation facilities and method for making sample of leather sample, is specifically related to a kind of extended state leather cross-sectional sample preparation facilities, belongs to leather inspection technology field.

background technology

Leather Weave parameters mainly obtains by observing leather histotomy now, as 2002, the Wang Yingmei of Sichuan University etc. are studied (Histological Structure of Porket Skin research by the section of polarized light microscope observing sucking pig skin to Histological Structure of Porket Skin, Wang Yingmei etc., leather science and engineering ISSN 1004-7964, the 12nd volume, the 1st phase, 50-54 page, in February, 2002), 2010, the pig that the Lv Jing of resource and environment institute of Shaanxi Tech Univ has prepared different feels by sulfuric acid Nai Erlan decoration method, sheep, ox-hide finished product leather histotomy, in its institutional framework of the micro-Microscopic observation of multimedia, analyzed the relation (pig of its institutional framework and performance, sheep, the institutional framework of ox-hide finished product leather and the relation of performance are inquired into, leather and chemical industry ISSN 1674-0939, the 27th volume, the 6th phase, 36-39 page, in Dec, 2010).

But, the Changeement of the leather institutional framework under some pulled out condition, that fibre section after stretching by observation obtains, situation owing to removing leather cross section after external force and stress is can be not identical, during stress, fiber condition does not well preserve, thus observe be often not real stress time fibre morphology.At the document (controlling system design of leather organoleptic parameters analyzer, Lu Qi etc., Chinese leather, the 39th the 15th phase of volume, 29-32 page, ISSN:1001-6813, in August, 2010) in a kind of leather organoleptic parameters analyzer is disclosed, it is by recording tensile deformation that the variation of load-displacement-time data reacts leather, fibre morphology when this method cannot obtain real extended state.

utility model content

The utility model, for the deficiencies in the prior art, provides a kind of form of leather fiber under extended state and device of braiding structure thereof observed.Fiber in leather cross section and braiding structure under extended state are accurately reflected.

The technical solution adopted in the utility model is as follows:

A kind of device that obtains extended state leather cross section, this device comprises an operating platform, for clamping the front sample clamp of leather sample, rear sample clamp and for holding the U-lag mould of resin, in one end of described operating platform, be provided with a fixed bar, the other end is provided with a fixed pulley, described front sample clamp is fixed on fixed bar, rear sample clamp is walked around fixed pulley by traction steel wire and is connected a balancing weight, and the two ends of described U-lag mould are provided with plasticine end socket.

Described U-lag mould comprises three microslides, a horizontal positioned wherein, another two by the both sides that are bonded in horizontal microslide of glass cement vertical symmetry, and seal its gap.

Described plasticine end socket contacts with U-lag mould and leather completely, to reach sealing U-lag mould, prevents the object that resin is revealed.

Described balancing weight is the polylith derby of adjustable weight.

Method for making sample of the present utility model is as follows:

Step 1 is cut into required strip by leather sample;

For step 2, front sample clamp, rear sample clamp are clamped strip leather two ends;

Step 3 is adjusted to required weight by counterweight;

Step 4 is placed on leather sample interlude position by U-lag mould, makes leather sample from the opening both sides of U-lag mould, pass the center of mould simultaneously;

Step 5 seals the both sides of U-lag mould openings with plasticine end socket, and the leather position that is positioned at both mold ends is also wrapped up completely by plasticine;

Step 6 is injected the resin modulating from the top of U-lag mould in U-lag mould, and fills it up with;

Resin such as step 7 grade removes counterweight after solidifying completely, takes off the leather sample being cured;

Step 8 is cut leather sample as required, examines under a microscope sampling after sanding and polishing.

The resin modulating in described step 6 comprises 196# unsaturated polyester resin, cobalt iso-octoate solution, methyl ethyl ketone peroxide solution, and its ratio is 196# unsaturated polyester resin: cobalt iso-octoate solution: methyl ethyl ketone peroxide solution=100:1:1.2.

Described cobalt iso-octoate solution is every milliliter of solution that contains 0.40～0.45 gram of cobalt iso-octoate; Described methyl ethyl ketone peroxide solution is every milliliter and contains 0.54～0.60 gram of methyl ethyl ketone peroxide, containing available oxygen≤10%.

The beneficial effects of the utility model are as follows:

The utility model can well remain after the fiber condition of leather when stretching solidified by resin-dipping, the state while understanding tensile fiber by its cross section of observation after being convenient to.Use unsaturated polyester resin, promoter and curing agent mixture dipping leather sample, because 196# unsaturated polyester resin viscosity is little, intensity is high, be easy to soak into leather, strong with leather affinity, after solidifying, be made into a kind of firm polymer matrix composites, leather fiber is fixed, can polish to it, the operation such as polishing, and fiber do not move, indeformable, do not lack.

Accompanying drawing explanation

fig. 1 is device front view;

Fig. 2 is device vertical view;

Fig. 3 (a) is U-lag mould vertical view;

Fig. 3 (b) is U-lag die side view;

Fixed bar before 1-in figure, sample clamp before 2-, 3-leather sample, 4-plasticine end socket, 5-U-lag mould, 6-operating platform, 7-traction steel wire, 8-fixed pulley, 9-balancing weight, 10-rear sample clamp.

Embodiment

Below in conjunction with accompanying drawing, the utility model is elaborated:

As Figure 1-Figure 2, a kind of extended state leather cross-sectional sample preparation facilities, this device mainly comprises: operating platform 6 and front fixed bar 1 and fixed pulley 8 fixed thereon; For clamping front sample clamp 2 and the rear sample clamp 10 of leather sample 3; For holding the U-lag mould 5 of resin and the plasticine end socket 4 at two ends thereof; Also has the traction steel wire 7 that connects rear sample clamp 10 and balancing weight 9.Described U-lag mould 5 is that (microslide is of a size of long 75mm by three microslides, wide 25mm) form, a horizontal positioned wherein, another two are vertically put in horizontal microslide both sides, and be by glass cement, it is bonding, and seal its gap and see Fig. 3 (a) and Fig. 3 (b).Described leather sample is ox-hide crust leather, long 12mm, wide 3mm, thick 1mm.Described plasticine end socket is wanted to contact with U-lag mould 5 and leather completely, to reach sealing U-lag mould, prevents the object that resin is revealed.Described balancing weight 9 is 5Kg derby.

Method for making sample:

1. leather sample is cut into required strip (long 12mm, wide 3mm, thick 1mm);

2. with clamp clamps strip leather sample two ends;

3. counterweight is adjusted to 5Kg;

4. U-lag mould is placed on to leather sample interlude position, makes leather sample pass the center of U-lag mould simultaneously;

5. with plasticine end socket, U-lag both mold ends is sealed, note the sealing of leather and plasticine.

6. in U-lag mould, inject the resin modulating, fill it up with as far as possible;

7. after resin such as grade solidifies completely, remove counterweight, take off the leather sample being cured;

8. cut as required sample, after sanding and polishing, examine under a microscope.

Described resin comprises 196# unsaturated polyester resin, cobalt iso-octoate solution (every milliliter containing 0.40～0.45 gram of cobalt iso-octoate), (every milliliter containing 0.54～0.60 gram of methyl ethyl ketone peroxide for methyl ethyl ketone peroxide solution, containing available oxygen≤10%), all purchased from resin market, Jinan, its ratio is 196# unsaturated polyester resin: cobalt iso-octoate solution: methyl ethyl ketone peroxide solution=100:1:1.2.

Sample preparation device described in the utility model, in resin-dipping solidification process, tensile force is constant, and fiber condition well remains after solidifying by resin-dipping, the state while understanding tensile fiber by its cross section of observation after being convenient to; Owing to adopting microslide and plasticine to make mould, be convenient to dismounting and the demoulding; Because counterweight is adjustable, can obtain the sample under various tensile forces.In addition, this apparatus structure is simple, is easy to make, easy to operate.

Above example is only for illustrating the use of the utility model, but not to restriction of the present utility model, person skilled in the relevant technique, in the situation that not departing from spirit and scope of the present utility model, can also make various conversion or modification, therefore all technical schemes that are equal to also should belong to category of the present utility model, should be limited by each claim.

Claims (4)

1. a device that obtains extended state leather cross section, it is characterized in that: comprise an operating platform, for clamping the front sample clamp of leather sample, rear sample clamp and for holding the U-lag mould of resin, in one end of described operating platform, be provided with a fixed bar, the other end is provided with a fixed pulley, described front sample clamp is fixed on fixed bar, rear sample clamp is walked around fixed pulley by traction steel wire and is connected a balancing weight, and the two ends of described U-lag mould are provided with plasticine end socket.

2. device as claimed in claim 1, is characterized in that: described U-lag mould comprises three microslides, a horizontal positioned wherein, another two by the both sides that are bonded in horizontal microslide of glass cement vertical symmetry, and seal its gap.

3. device as claimed in claim 1, is characterized in that: described plasticine end socket contacts with U-lag mould and leather seal completely.

4. device as claimed in claim 1, is characterized in that: described balancing weight is the polylith derby of energy regulating weight.

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