CN211740945U - Leather seam fatigue resistance's testing arrangement - Google Patents
Leather seam fatigue resistance's testing arrangement Download PDFInfo
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- CN211740945U CN211740945U CN201922424972.4U CN201922424972U CN211740945U CN 211740945 U CN211740945 U CN 211740945U CN 201922424972 U CN201922424972 U CN 201922424972U CN 211740945 U CN211740945 U CN 211740945U
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Abstract
The utility model discloses a leather seam fatigue resistance's testing arrangement, include: the base plate is provided with a fixing part and a push-pull part connected with the fixing part, at least two pairs of fixing pile groups are arranged on the fixing part, and each pair of fixing pile groups comprises two fixing piles; two ends of the guide rod are respectively fixed to the two fixed piles in one fixed pile group, and the guide rods are parallel to each other; the clamping block is used for clamping the leather; the push-pull part is also provided with an air cylinder, the air cylinder is fixed on the push-pull part through a fixed block, and the ejector rod is connected with a sliding block for pushing the sliding clamping block to slide along the guide rod; the push-pull part is further provided with a plurality of pulleys, the sliding clamping block is connected with a rope, and the rope is connected with weights in a suspended mode through the pulleys. The application truly simulates the daily use environment and the stress condition; the clamping block can clamp and fix leather with various shapes, sizes and thicknesses.
Description
Technical Field
The utility model relates to a leather seam technical field especially relates to a leather seam fatigue resistance's testing arrangement.
Background
In practical application, the leather is spliced and sewed by using a penetrating needle, and holes with certain density and geometric distribution are formed locally. Usually, the sewing part can bear certain acting force in the in-service use, through actual used repeatedly, the elasticity is lost to ageing gradually, causes the sewing part pinhole grow, and the aesthetic measure descends, can further lead to the product fracture damage even, loses use value. The seam fatigue resistance is that under the specified test condition, the sewed sample is put into a testing machine, the sample is repeatedly exerted with tension-relaxation action at a fixed running frequency, after a certain running period, the sample is kept in the testing machine, the size of the seam pinhole is measured under the condition of keeping the original load in a static state, and the size of the pinhole is the seam fatigue resistance, so that the sewing performance of the leather is reflected.
The leather fatigue strength testing device in the prior art is complex in structure, the simulation of the daily use environment of leather is not real enough, and the leather is easy to stress unevenly after being fixed.
The present chinese patent publication No. CN202119686U discloses a stitch fatigue testing machine, which comprises: frame, drive arrangement, leather anchor clamps and overspeed device tensioner to the user state is the benchmark, and at least a pair of leather anchor clamps are the symmetric state and can slide the location in the frame upside by the straight line, are equipped with the tight head of clamp that can step up the leather on the leather anchor clamps, and overspeed device tensioner can follow leather anchor clamps slip direction and take up the leather of centre gripping on the leather anchor clamps, and drive arrangement can drive leather anchor clamps straight line and slide. Although the stitch fatigue testing machine can also achieve the purpose of testing the fatigue strength of the leather, the structure is more complex than that of the application, and the simulation of the daily use environment is not accurate.
SUMMERY OF THE UTILITY MODEL
The above is not enough to prior art, the utility model aims to solve the technical problem that a leather seam fatigue resistance's testing arrangement is proposed for solve among the prior art leather fatigue resistance's testing arrangement structure complicated, the daily service environment of simulation leather is true inadequately, and the inhomogeneous problem of atress appears after the leather is fixed easily.
The utility model provides a technical scheme that its technical problem adopted is a leather seam fatigue resistance's testing arrangement, include:
the bottom plate is provided with a fixing part and a push-pull part connected with the fixing part, at least two pairs of fixing pile groups are arranged on the fixing part, each pair of fixing pile groups comprises two fixing piles, one fixing pile is fixedly connected to one end, far away from the push-pull part, of the fixing part, the other fixing pile is fixedly connected to one end, close to the push-pull part, of the fixing part, and the fixing piles are parallel to each other;
two ends of the guide rod are respectively fixed to the two fixed piles in one fixed pile group, and the guide rods are parallel to each other;
the clamping block is used for clamping leather and comprises a fixed clamping block and a sliding clamping block, the fixed clamping block is arranged between two adjacent fixed piles which are far away from one end of the push-pull part, two ends of the sliding clamping block are respectively sleeved on the two adjacent guide rods, and the sliding clamping block can slide along the two guide rods and is arranged opposite to the fixed clamping block;
the push-pull part is also provided with an air cylinder, the air cylinder is fixed on the push-pull part through a fixed block, the air cylinder is provided with an ejector rod, the ejector rod faces the fixed part, and the ejector rod is connected with a sliding block for pushing the sliding clamping block to slide along the guide rod;
the push-pull part is further provided with a plurality of pulleys, the sliding clamping block is connected with a rope, and the rope is connected with weights in a suspended mode through the pulleys.
Preferably, the fixed clamping block or the sliding clamping block comprises an upper fixed plate, a lower fixed plate and a movable plate, the movable plate is located between the upper fixed plate and the lower fixed plate, and the upper fixed plate is fixedly connected with the lower fixed plate;
the upper fixing plate is provided with at least one clamping knob, and the clamping knob is in threaded connection with the upper fixing plate and penetrates through the upper fixing plate to abut against the movable plate.
Preferably, a through hole is formed in the sliding block, the ejector rod penetrates through the through hole, an adjusting nut is connected to the ejector rod in a threaded mode, and the adjusting nut abuts against the sliding block.
Preferably, four pairs of fixed pile groups, four guide rods, two clamping blocks and two pulleys are arranged on the bottom plate;
the sliding blocks are sleeved on the two adjacent guide rods in the middle, and the sliding clamping blocks are located between the fixed clamping blocks and the sliding blocks.
Preferably, one side of the sliding clamping block, which is far away from the fixed clamping block, is provided with a load hook, and the load hook is used for hooking a rope to connect a weight.
Preferably, the load hook is disposed at a middle position of the sliding clamp block;
both ends of the sliding block are provided with a notch.
Preferably, the upper fixing plate is provided with two clamping knobs, and the two clamping knobs are symmetrically arranged.
Compared with the prior art, the utility model discloses following beneficial effect has at least:
in the utility model, the clamping block is divided into a movable clamping block and a fixed clamping block, and the leather seam can be tested by pulling or pushing the movable clamping block, thereby truly simulating the daily use environment and the stress condition; the clamping block can clamp and fix leather with various shapes, sizes and thicknesses.
Drawings
FIG. 1 is a schematic structural diagram of a device for testing fatigue resistance of leather seams in an embodiment;
FIG. 2 is a schematic structural view of a fixed clamp block in the embodiment;
FIG. 3 is a schematic structural view of a cylinder in the embodiment;
in the figure, 10-bottom plate, 11-fixed part, 12-push-pull part, 20-fixed pile, 21-fixed pile group, 30-clamping block, 31-fixed clamping block, 32-sliding clamping block, 33-upper fixed plate, 34-movable plate, 35-lower fixed plate, 36-clamping knob, 37-load hook, 40-guide rod, 50-air cylinder, 51-ejector rod, 52-fixed block, 53-adjusting nut, 60-pulley, 70-sliding block and 71-notch.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
Please refer to fig. 1-3, the utility model discloses a leather seam fatigue strength's testing arrangement, include:
the base plate 10 is provided with a fixing part 11 and a push-pull part 12 connected with the fixing part 11, at least two pairs of fixing pile groups 21 are arranged on the fixing part 11, each pair of fixing pile groups 21 comprises two fixing piles 20, one fixing pile 20 is fixedly connected to one end of the fixing part 11 far away from the push-pull part 12, the other fixing pile 20 is fixedly connected to one end of the fixing part 11 close to the push-pull part 12, and the fixing piles 20 are parallel to each other;
guide rods 40, both ends of each guide rod 40 are respectively fixed to two fixing piles 20 in one fixing pile group 21, and a plurality of guide rods 40 are parallel to each other;
the clamping block 30 is used for clamping leather, the clamping block 30 comprises a fixed clamping block 31 and a sliding clamping block 32, the fixed clamping block 31 is arranged between two adjacent fixing piles 20 far away from one end of the push-pull part 12, two ends of the sliding clamping block 32 are respectively sleeved on two adjacent guide rods 40, and the sliding clamping block 32 can slide along the two guide rods 40 and is arranged opposite to the fixed clamping block 31;
the push-pull part 12 is further provided with an air cylinder 50, the air cylinder 50 is fixed on the push-pull part 12 through a fixing block 52, the air cylinder 50 is provided with a top rod 51, the top rod 51 faces the fixing part 11, and the top rod 51 is connected with a sliding block 70 for pushing the sliding clamping block 32 to slide along the guide rod 40; aiming at different test requirements, the air inflow of the air cylinder 50 can be adjusted to adjust the stretching speed of the ejector rod 51 of the air cylinder 50, so that the tensioning-loosening reciprocating speed of the leather seam is realized.
The push-pull part 12 is further provided with a plurality of pulleys 60, the sliding clamping block 32 is connected with a rope, and the rope is connected with weights in a suspended mode through the pulleys 60.
In the test process, the sliding clamping block 32 and the fixed clamping block 31 are respectively fixed at two ends of leather, the weight is suspended, the gravity of the weight provides a pulling force for the leather, the ejector rod 51 on the air cylinder 50 is ejected, the sliding block 70 is pushed to drive the sliding clamping block 32 to move so as to loosen the leather, the ejector rod 51 on the air cylinder 50 retracts, the leather enters a tensioning state under the pulling force of the weight, and the tensioning-loosening reciprocating reality simulates the stress environment of leather seams in daily use. Wherein, aiming at different seams, different weights can be replaced to provide different tensile forces.
The fixed clamping block 31 or the sliding clamping block 32 comprises an upper fixed plate 33, a lower fixed plate 35 and a movable plate 34, the movable plate 34 is located between the upper fixed plate 33 and the lower fixed plate 35, and the upper fixed plate 33 is fixedly connected with the lower fixed plate 35;
the upper fixing plate 33 is provided with at least one clamping knob 36, and the clamping knob 36 is in threaded connection with the upper fixing plate 33 and passes through the upper fixing plate 33 to abut against the movable plate 34.
Specifically, the leather is stretched between the lower fixing plate 35 and the movable plate 34, and then the clamping knob 36 is screwed down, so that the lower fixing plate 35 and the movable plate 34 clamp the leather; the leather fixing device has the advantages that leather with various shapes, sizes and thicknesses can be fixed, and in the testing process, stress on all positions of the joint is more uniform, so that the situation that the joint at one position is stressed and opened, and the joint at the other position is not stressed is avoided.
The sliding block 70 is provided with a through hole, the ejector rod 51 penetrates through the through hole, the ejector rod 51 is in threaded connection with an adjusting nut 53, and the adjusting nut 53 abuts against the sliding block 70.
The purpose of arranging the adjusting nut 53 on the mandril 51 is as follows: the stroke length of the reciprocating motion of the leather can be controlled, and when the stroke needs to be adjusted to be long; the adjusting nut 53 is only required to rotate toward the direction close to the sliding clamping block 32, and when the stroke needs to be shortened, the adjusting nut 53 is only required to rotate toward the direction away from the sliding clamping block 32.
Four pairs of fixed pile groups 21, four guide rods 40, two clamping blocks 30 and two pulleys 60 are arranged on the bottom plate 10;
the sliding blocks 70 are sleeved on the two adjacent guide rods 40 in the middle, and the sliding clamping blocks 32 are located between the fixed clamping blocks 31 and the sliding blocks 70.
In this embodiment, four pairs of fixing pile groups 21 are provided, each pair of fixing pile groups 21 are parallel to each other, and the top rod 51 passes through the space between two adjacent fixing piles 20 near the push-pull part 12 and at the middle position to abut against the sliding block 70.
The side of the sliding clamping block 32 away from the fixed clamping block 31 is provided with a load hook 37, and the load hook 37 is used for hooking a rope to connect a weight.
The load hook 37 is provided at the middle position of the slide clamp block 32; the middle position is arranged to ensure that the leather is stressed more uniformly.
Both ends of the sliding block 70 are provided with a notch 71. The notch 71 is provided to avoid a rope connecting the weights.
The upper fixing plate 33 is provided with two clamping knobs 36, and the two clamping knobs 36 are symmetrically arranged.
The two clamping knobs 36 are arranged and symmetrically distributed in order to apply a more even force to the leather during clamping, so that the tension is more even at each position of the seam during pulling.
In general, the clamping block in the utility model is divided into a movable clamping block and a fixed clamping block, the leather seam can be tested by pulling or pushing the movable clamping block, and the daily use environment and the stress condition are truly simulated; the clamping block can clamp and fix leather with various shapes, sizes and thicknesses.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (7)
1. A testing arrangement of leather seam fatigue resistance intensity characterized by, includes:
the bottom plate is provided with a fixing part and a push-pull part connected with the fixing part, at least two pairs of fixing pile groups are arranged on the fixing part, each pair of fixing pile groups comprises two fixing piles, one fixing pile is fixedly connected to one end, far away from the push-pull part, of the fixing part, the other fixing pile is fixedly connected to one end, close to the push-pull part, of the fixing part, and the fixing piles are parallel to each other;
two ends of the guide rod are respectively fixed to the two fixed piles in one fixed pile group, and the guide rods are parallel to each other;
the clamping block is used for clamping leather and comprises a fixed clamping block and a sliding clamping block, the fixed clamping block is arranged between two adjacent fixed piles which are far away from one end of the push-pull part, two ends of the sliding clamping block are respectively sleeved on the two adjacent guide rods, and the sliding clamping block can slide along the two guide rods and is arranged opposite to the fixed clamping block;
the push-pull part is also provided with an air cylinder, the air cylinder is fixed on the push-pull part through a fixed block, the air cylinder is provided with an ejector rod, the ejector rod faces the fixed part, and the ejector rod is connected with a sliding block for pushing the sliding clamping block to slide along the guide rod;
the push-pull part is further provided with a plurality of pulleys, the sliding clamping block is connected with a rope, and the rope is connected with weights in a suspended mode through the pulleys.
2. The device for testing the fatigue resistance of the leather joint according to claim 1, wherein the fixed clamping block or the sliding clamping block comprises an upper fixed plate, a lower fixed plate and a movable plate, the movable plate is located between the upper fixed plate and the lower fixed plate, and the upper fixed plate is fixedly connected with the lower fixed plate;
the upper fixing plate is provided with at least one clamping knob, and the clamping knob is in threaded connection with the upper fixing plate and penetrates through the upper fixing plate to abut against the movable plate.
3. The device for testing the fatigue resistance of the leather joint according to claim 1, wherein the sliding block is provided with a through hole, the ejector rod passes through the through hole, the ejector rod is in threaded connection with an adjusting nut, and the adjusting nut abuts against the sliding block.
4. The device for testing the fatigue resistance of the leather joint according to claim 1, wherein four pairs of the fixing pile groups, four guide rods, two clamping blocks and two pulleys are arranged on the bottom plate;
the sliding blocks are sleeved on the two adjacent guide rods in the middle, and the sliding clamping blocks are located between the fixed clamping blocks and the sliding blocks.
5. The device for testing the fatigue resistance of the leather joint according to claim 1, wherein a load hook is arranged on one side of the sliding clamping block, which is far away from the fixed clamping block, and the load hook is used for hooking a rope to connect a weight.
6. The device for testing the fatigue resistance of the leather joint according to claim 5, wherein the load hook is arranged at the middle position of the sliding clamping block;
both ends of the sliding block are provided with a notch.
7. The device for testing the fatigue resistance of the leather joint according to claim 2, wherein two clamping knobs are arranged on the upper fixing plate, and the two clamping knobs are symmetrically arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922424972.4U CN211740945U (en) | 2019-12-26 | 2019-12-26 | Leather seam fatigue resistance's testing arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922424972.4U CN211740945U (en) | 2019-12-26 | 2019-12-26 | Leather seam fatigue resistance's testing arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211740945U true CN211740945U (en) | 2020-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922424972.4U Active CN211740945U (en) | 2019-12-26 | 2019-12-26 | Leather seam fatigue resistance's testing arrangement |
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| Country | Link |
|---|---|
| CN (1) | CN211740945U (en) |
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2019
- 2019-12-26 CN CN201922424972.4U patent/CN211740945U/en active Active
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