CN118857980A - A stretch fabric strength testing device - Google Patents

Abstract

The invention provides an elastic fabric strength testing device, which relates to the technical field of fabric strength testing and comprises: the four clamping plates are symmetrically and rotatably provided with two top wheels which are convexly supported on the side surfaces which are far away from each other, and when the two sliding frames are far away from each other and slide, eight top wheels correspondingly contact with the inclined surfaces of the head ends of eight cross brace mounting rods in an abutting mode so as to drive the four clamping plates to slide and clamp close to each other; the center position of the I-shaped base is fixedly provided with a hydraulic driving device, the top end of a telescopic shaft of the hydraulic driving device is fixedly provided with an I-shaped frame, two connecting rods are symmetrically and rotationally connected on the I-shaped frame in front-back mode, and the head ends of the two connecting rods are correspondingly and rotationally connected with the two sliding frames. Through the power transmission of push rod and top wheel, two clamping mechanism can indirectly utilize two sliding frame to slide in opposite directions and drag the driving force of drawing the test, order about automatic elasticity that opens and shuts, can save the trouble that needs manual output to implement elasticity to two clamping mechanism, and the operation is used conveniently, laborsaving.

Description

A stretch fabric strength testing device

Technical Field

The invention relates to the technical field of cloth strength testing, and in particular to a stretch cloth strength testing device.

Background Art

Strength testing of stretch fabrics is generally required after production to evaluate and determine the strength and durability of stretch fabric materials to ensure that they can meet relevant requirements and standards in actual use. Strength testing can increase consumer confidence in products, reduce the risk of quality problems and safety accidents, and enhance the competitiveness and reputation of enterprises. When implementing strength testing, special testing equipment is required.

The existing device for testing the strength of elastic fabric by relative pulling is generally equipped with two mechanisms for clamping and fixing the ends of the elastic fabric. Since the two clamping mechanisms need to slide relative to each other, it is difficult to set a mechanism between them that can synchronously drive them on the basis of sliding displacement. This results in the two clamping mechanisms having to be tightened and loosened step by step before and after the test, which is troublesome and inefficient to use.

In addition, the specific opening and closing and tightening actions of the two clamping mechanisms generally require manual operation, which is laborious and inconvenient to use. Although some clamping mechanisms can be opened and closed by configuring a special drive device, the additional drive device is not conducive to reducing the manufacturing cost of the equipment.

Summary of the invention

In view of this, the present invention provides a stretch fabric strength testing device to solve the problem that the two clamping mechanisms need to be tightened and loosened step by step before and after the test, which is troublesome and inefficient to use.

The technical solution proposed by the present invention is: a stretch fabric strength testing device, specifically comprising a frame, a clamping plate and a stretch fabric, wherein four clamping plates for clamping and fixing the two ends of the stretch fabric are installed in a space above the top of the frame and slide toward each other;

The frame as a whole is composed of an I-shaped base and four vertical support rods symmetrically welded to the front and rear ends of the I-shaped base, wherein two sliding frames that slide straightly forward and backward are symmetrically installed in the space between the four vertical support rods; the sliding frame is a U-shaped structure, and the four clamping plates are pushed and slidably matched with the two sliding frames by springs; four horizontal support mounting rods are welded at intervals between the top parts of the four vertical support rods, and two push rods with oblique section structures at the head ends are symmetrically welded on each horizontal support mounting rod, and the eight push rods are arranged facing each other front and back;

Two protruding supporting top wheels are symmetrically mounted on the side surfaces of the four clamping plates that are away from each other. When the two sliding frames slide away from each other, the eight top wheels contact the inclined surfaces of the first ends of the eight horizontal support mounting rods to drive the four clamping plates to slide towards each other and clamp.

A hydraulic drive device is fixedly installed at the center position of the I-shaped base, an I-shaped frame is fixed to the top of the telescopic shaft of the hydraulic drive device, and two connecting rods are connected to the I-shaped frame in a front-to-back symmetrical rotation manner, and the head ends of the two connecting rods are correspondingly connected to the two sliding frames for rotation.

Furthermore,

Strip rubber pads are fixed on the extrusion surfaces of the clamping plates at four locations close to each other, and the strip rubber pads at four locations are in extrusion contact with the elastic cloth.

Furthermore,

Two Z-shaped sliding bars are symmetrically welded on the short side of the clamping plate, and the tail ends of the Z-shaped sliding bars are slidably matched with the vertical support part of the sliding frame through spring pushing.

Furthermore,

Two longitudinal support track shafts are symmetrically welded between the four vertical support rods, and two slip rings are symmetrically welded at both ends of the horizontal support part at the bottom side of the sliding frame, and the slip rings are slidably matched with the longitudinal support track shafts.

Furthermore,

A tension and pressure sensor is connected to the middle sections of the two connecting rods, and the head ends of the two connecting rods are rotatably connected to the bottom side cross bracing parts of the two sliding frames.

Furthermore,

A digital display controller is fixed to the top end of the cross brace mounting rod at the upper side, and the digital display controller is electrically connected to the two tension and pressure sensors for displaying the detected tension data.

Furthermore,

Two U-shaped installation frames are symmetrically welded on each of the clamping plates, and the top wheel cooperates with the rotating rod of the U-shaped installation frame.

Furthermore,

Under normal conditions, the four clamps are close to each other, and the top wheel and the top push rod remain separated;

During testing, the elastic fabric is threaded and placed between the four splints.

Furthermore,

The push rod is arranged horizontally and longitudinally, and the welding angle between the push rod and the cross brace mounting rod is 90 degrees.

The invention provides a stretch fabric strength testing device, which has the following beneficial effects:

When the present invention is in use, through the power transmission of the push rod and the push wheel, the two clamping mechanisms can indirectly utilize the driving force of the two sliding frames sliding toward each other to perform a pulling test, thereby driving automatic opening and closing and tightening. Compared with the prior art, the trouble of manually tightening the two clamping mechanisms can be eliminated, and the operation is convenient and labor-saving. It can also avoid the need to additionally configure an opening and closing drive device for the two clamping mechanisms, which helps to reduce the overall manufacturing cost of the device.

In addition, the two clamping mechanisms are driven to open and close synchronously. Compared with the existing technology, this can save the trouble of tightening and loosening the two clamping mechanisms step by step. This helps to simplify the tightening and loosening operation steps of the elastic fabric during the test process and improve the test operation efficiency.

In addition, when the four clamps are clamped and fixed to the ends of the elastic fabric, the pulling force of the two sliding frames sliding away from each other begins to be transmitted to the elastic fabric, thereby implementing a tensile test on the elastic fabric; when the four clamps are clamped, the sliding frames continue to move away from each other, driving the eight top wheels to leave the inclined surfaces of the first ends of the eight push rods, and roll against the horizontal surfaces of the eight push rods that are close to each other. This can keep the four clamps pressed and fixed to the ends of the elastic fabric during the tensile test of the elastic fabric by the two sliding frames, so that the pulling force from the two sliding frames can be continuously and uninterruptedly transmitted to the elastic fabric, thereby helping to ensure the normal implementation of the tensile test.

In addition, eight top wheels and eight push rods serve as mechanisms for synchronously driving the opening and closing of the two clamping mechanisms. By setting a reasonable structure and installation position, the two clamping mechanisms can use the reverse thrust driving force during relative sliding to drive the opening and closing. Compared with the existing technology, the difficulty and obstacles brought about by the relative sliding movement of the two clamping mechanisms in setting up a synchronous opening and closing transmission mechanism can be overcome. The design concept is ingenious and the practicality is good.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

In the attached picture:

FIG1 shows a schematic diagram of the overall front structure of the present invention;

FIG2 shows a schematic diagram of the overall rear side structure of the present invention;

FIG3 shows a schematic diagram of the overall bottom structure of the present invention;

FIG4 shows a schematic diagram of the installation position of the sliding frame of the present invention;

FIG5 shows a schematic diagram of the bottom structure of the sliding frame of the present invention;

FIG6 is a schematic diagram showing a disassembled state of the sliding frame of the present invention;

FIG7 is a schematic diagram showing a disassembled state of the splint of the present invention;

FIG8 shows a schematic diagram of the connecting rod structure of the present invention;

Reference numerals list

1. Frame; 101. Horizontal support mounting rod; 102. Vertical support track shaft; 103. Push rod;

2. Sliding frame; 201. Slip ring;

3. Hydraulic drive device; 301. I-shaped frame; 302. Connecting rod;

4. Clamp; 401. Top wheel; 402. Strip rubber pad; 403. Z-shaped slide bar;

5. Digital display controller;

6. Pull pressure sensor;

7. Stretch fabric.

DETAILED DESCRIPTION

In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

An embodiment of the present invention is provided with reference to Figures 1 to 8:

A stretch fabric strength testing device comprises a frame 1, a clamping plate 4 and a stretch fabric 7. Four clamping plates 4 are slidably mounted in the space above the top of the frame 1 and are used to clamp and fix the two ends of the stretch fabric 7.

Among them, the frame 1 as a whole is composed of an I-shaped base and four vertical support rods symmetrically welded at the front and rear ends of the I-shaped base, wherein two sliding frames 2 that slide straightly forward and backward are symmetrically installed in the space between the four vertical support rods; the sliding frame 2 is a U-shaped structure, and the four clamping plates 4 are slidably matched with the two sliding frames 2 through spring pushing, and the four clamping plates 4 are arranged in groups of two to form two clamping mechanisms, and the two clamping mechanisms are used to clamp the head and tail ends of the elastic cloth 7, and fix the two ends of the elastic cloth 7 with the two sliding frames 2 together; the two sliding frames 2 are used to drive the two clamping mechanisms to slide away from each other and pull the head and tail ends of the elastic cloth 7 in the opposite direction, so as to implement a tensile strength test on the elastic cloth 7; four horizontal support mounting rods 101 are welded at upper and lower intervals between the top parts of the four vertical support rods, and two push rods 103 with oblique section structures at the head ends are symmetrically welded on each horizontal support mounting rod 101, and the eight push rods 103 are arranged front and back facing each other;

Two protruding supporting top wheels 401 are symmetrically installed on the side surfaces away from each other on the four clamping plates 4. When the two sliding frames 2 slide away from each other, the eight top wheels 401 correspondingly come into contact with the inclined surfaces of the head ends of the eight cross-bracing mounting rods 101. Through the inclined surface guiding principle of the eight upper and lower pushing rods 103, when the two sliding frames 2 are driven to slide away from each other to implement the pulling side, the eight top wheels 401 and the four clamping plates 4 can be pushed and driven to slide towards each other synchronously, so as to automatically clamp and fix the head and tail ends of the elastic fabric 7. After the detection is completed, the two sliding frames 2 slide towards each other, and the top wheels 401 and the pushing rods 103 are in contact with the inclined surfaces of the head ends of the eight cross-bracing mounting rods 101. 3 is separated, the clamping plates 4 at the four places lose the holding force of pushing and squeezing, and can be pushed away from each other by the spring rebound on the vertical support part of the sliding frame 2 to slide and reset, automatically loosening the elastic cloth 7, and then through the power transmission of the pushing rod 103 and the top wheel 401, the two clamping mechanisms can indirectly use the driving force of the two sliding frames 2 sliding towards each other to perform the pulling test, and drive the automatic opening and closing of the clamping mechanisms. Compared with the prior art, it can save the trouble of manually exerting force to tighten the two clamping mechanisms, and the operation is convenient and labor-saving. It can also save the need to configure an additional opening and closing driving device for the two clamping mechanisms, which helps to reduce the manufacturing cost of the device as a whole;

It is worth noting that when the four clamps 4 are clamped and fixed with the ends of the elastic fabric 7, the pulling force of the two sliding frames 2 sliding away from each other begins to be transmitted to the elastic fabric 7, and the tensile test of the elastic fabric 7 is implemented; when the four clamps 4 are clamped, the sliding frames 2 continue to move away from each other, driving the eight top wheels 401 to leave the inclined surfaces of the head ends of the eight push rods 103 and roll against the horizontal surfaces of the eight push rods 103 on the side close to each other. This can keep the four clamps 4 pressed and fixed with the ends of the elastic fabric 7 during the process of the two sliding frames 2 performing the tensile test on the elastic fabric 7, so that the pulling force from the two sliding frames 2 can be continuously and uninterruptedly transmitted to the elastic fabric 7, which helps to ensure the normal implementation of the tensile test operation;

The two clamping mechanisms are driven to open and close synchronously, which can save the trouble of tightening and loosening the two clamping mechanisms step by step in order compared with the prior art, and help simplify the tightening and loosening operation steps of the elastic fabric 7 during the test process, thereby improving the test operation efficiency;

The eight top wheels 401 and the eight push rods 103 serve as mechanisms for synchronously driving the opening and closing of the two clamping mechanisms. By setting a reasonable structure and installation position, the two clamping mechanisms can be driven to open and close by utilizing the reverse thrust driving force generated during sliding. The two clamping mechanisms can be synchronously driven on the basis of the relative sliding of the two clamping mechanisms. The design concept is ingenious and the practicability is good.

A hydraulic drive device 3 is fixedly installed at the center position of the I-shaped base, and an I-shaped frame 301 is fixed to the top of the telescopic shaft of the hydraulic drive device 3. Two connecting rods 302 are connected to the I-shaped frame 301 in a front-to-back symmetrical rotation. The head ends of the two connecting rods 302 are correspondingly connected to the two sliding frames 2 for rotation. The two connecting rods 302, the I-shaped frame 301 and the two sliding frames 2 are connected together to form two crank slider mechanisms. Through these two mechanisms, the telescopic rod of the hydraulic drive device 3 and the I-shaped frame 301 can slide upward and downward to push and drive the two sliding frames 2 to slide toward each other front and back along the longitudinal support track shaft 102, thereby providing a test tension for the elastic fabric 7.

Preferably,

Strip rubber pads 402 are fixed on the extrusion surfaces of the four clamps 4 that are close to each other. The four strip rubber pads 402 are in extrusion contact with the elastic cloth 7. The strip rubber pads 402 are used to transfer the extrusion and fixing force of the clamp 4 to the elastic cloth 7, and the strip rubber pads 402 help to increase the friction resistance between the clamp 4 and the elastic cloth 7, thereby improving the clamping stability of the clamp 4 on the elastic cloth 7.

Preferably,

Two Z-shaped slide bars 403 are symmetrically welded on the short side of the clamping plate 4, and the tail ends of the Z-shaped slide bars 403 are slidably matched with the vertical support part of the sliding frame 2 through spring pushing.

Preferably,

Two longitudinal support track shafts 102 are symmetrically welded between the four vertical support rods, and two slip rings 201 are symmetrically welded at both ends of the horizontal support part at the bottom side of the sliding frame 2, and the slip rings 201 are slidably matched with the longitudinal support track shafts 102.

Preferably,

A tension pressure sensor 6 is connected to the middle section of the two connecting rods 302, and the head ends of the two connecting rods 302 are rotatably connected to the bottom cross-bracing parts of the two sliding frames 2. During the test, the two tension pressure sensors 6 are used to detect the top thrust of the elastic fabric 7 acting on the two connecting rods 302. The top thrust of the load on the two connecting rods 302 is the pulling force exerted on the elastic fabric 7.

Preferably,

A digital display controller 5 is fixed to the top of the upper cross brace mounting rod 101 , and the digital display controller 5 is electrically connected to two tension and pressure sensors 6 for displaying the detected tension data.

Preferably,

Two U-shaped mounting frames are symmetrically welded on each clamping plate 4, and the top wheel 401 cooperates with the rotating rod of the U-shaped mounting frame.

Preferably,

In a normal state, the four clamping plates 4 are close to each other, and the top wheel 401 and the top push rod 103 are kept separated;

During the test, the elastic fabric 7 is threaded and placed between the clamping plates 4 at four locations.

Preferably,

The push rod 103 is arranged horizontally and longitudinally, and the welding angle between the push rod 103 and the cross brace mounting rod 101 is 90 degrees.

Working principle: when in use, firstly guide the elastic cloth 7 to be tested between the four clamping plates 4, and ensure that the head and tail of the elastic cloth 7 have margins on the front and rear sides of the four clamping plates 4, then start the hydraulic drive device 3, the telescopic rod of the hydraulic drive device 3 pushes out to drive the I-shaped frame 301 upward, the two connecting rods 302, the I-shaped frame 301 and the two sliding frames 2 are connected together to form two crank slider mechanisms, through which the I-shaped frame 301 can slide upward to push and drive the two sliding frames 2 to slide back and forth along the longitudinal support track shaft 102. With the sliding of the two sliding frames 2, the four clamping plates 4 and the eight top wheels 401 thereon are in contact with the inclined surfaces of the head ends of the eight push rods 103. Through the inclined surface guiding principle of the eight push rods 103, the eight top wheels 401 and the four clamping plates 4 can be pushed and driven to slide synchronously close to each other, and automatically clamped at the head and tail ends of the elastic cloth 7;

When the clamping plates 4 at four locations are tightly connected with the ends of the elastic fabric 7, the pulling force of the two sliding frames 2 sliding away from each other begins to be transmitted to the elastic fabric 7, and the tensile strength test of the elastic fabric 7 is performed. The two tension pressure sensors 6 are used to detect the pulling force on the elastic fabric 7, and the digital display controller 5 is used to display the detected pulling force data in real time. When the elastic fabric 7 does not tear when it is subjected to the specified standard pulling force, it is determined that the tensile strength of the elastic fabric 7 is qualified, otherwise it is unqualified;

After the detection is completed, the hydraulic drive device 3 drives the telescopic rod and the I-shaped frame 301 to slide downward and reset, and controls the two sliding frames 2 to slide close to each other, and the top wheel 401 is separated from the top push rod 103, and the elastic cloth 7 is automatically loosened;

Note: After the four clamps 4 are clamped, the sliding frames 2 continue to move away from each other, driving the eight top wheels 401 to leave the head end inclined surfaces of the eight push rods 103 and roll against the horizontal surfaces of the eight push rods 103 on the side close to each other. This can keep the four clamps 4 pressed and fixed with the head and tail ends of the elastic fabric 7 during the pulling test of the elastic fabric 7 by the two sliding frames 2, so that the pulling force from the two sliding frames 2 can be continuously and uninterruptedly transmitted to the elastic fabric 7, ensuring the normal implementation of the tensile test operation.

In this article, there are a few points to note:

1. The drawings of the embodiments of the present invention only involve structures related to the embodiments of the present invention, and other structures can refer to the general design.

2. In the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other to obtain new embodiments.

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (9)

1. A stretch fabric strength testing device, comprising: a frame (1), a clamping plate (4) and a stretch fabric (7), wherein four clamping plates (4) are slidably mounted in the space above the top of the frame (1) and are used to clamp and fix the two ends of the stretch fabric (7); The frame (1) is characterized in that the frame (1) is composed of an I-shaped base and four vertical support rods symmetrically welded to the front and rear ends of the I-shaped base, wherein two sliding frames (2) are symmetrically slidably installed in the space between the four vertical support rods and can slide straightly forward and backward; the sliding frame (2) is a 凵-shaped structure, and the four clamping plates (4) are slidably matched with the two sliding frames (2) through spring pushing; four horizontal support mounting rods (101) are welded between the top parts of the four vertical support rods at intervals, and two push rods (103) with oblique cross-section structures at the head ends are symmetrically welded on each horizontal support mounting rod (101), and the eight push rods (103) are arranged facing each other front and back; Two protruding supporting top wheels (401) are symmetrically mounted on the side surfaces of the four clamping plates (4) that are away from each other, and when the two sliding frames (2) slide away from each other, the eight top wheels (401) contact with the inclined surfaces of the first ends of the eight horizontal support mounting rods (101) to drive the four clamping plates (4) to slide towards each other and clamp; A hydraulic drive device (3) is fixedly installed at the center of the I-shaped base, an I-shaped frame (301) is fixed to the top end of the telescopic shaft of the hydraulic drive device (3), and two connecting rods (302) are rotatably connected to the I-shaped frame (301) in a front-to-back symmetrical manner, and the head ends of the two connecting rods (302) are rotatably connected to the two sliding frames (2) accordingly. 2. A stretch fabric strength testing device according to claim 1, characterized in that: Strip rubber pads (402) are fixed on the extrusion surfaces of the clamping plates (4) at four locations close to each other, and the strip rubber pads (402) at four locations are in extrusion contact with the elastic fabric (7). 3. The stretch fabric strength testing device according to claim 1, characterized in that: Two Z-shaped sliding rods (403) are symmetrically welded to the short side of the clamping plate (4), and the tail ends of the Z-shaped sliding rods (403) are slidably matched with the vertical support part of the sliding frame (2) through spring pushing. 4. The stretch fabric strength testing device according to claim 1, characterized in that: Two longitudinal support track shafts (102) are symmetrically welded between the four vertical support rods, and two slip rings (201) are symmetrically welded at both ends of the horizontal support portion at the bottom side of the sliding frame (2), and the slip rings (201) are slidably matched with the longitudinal support track shafts (102). 5. A stretch fabric strength testing device according to claim 4, characterized in that: A tension pressure sensor (6) is connected to the middle section of each of the two connecting rods (302), and the head ends of the two connecting rods (302) are rotatably connected to the bottom side cross bracing parts of the two sliding frames (2). 6. A stretch fabric strength testing device according to claim 5, characterized in that: A digital display controller (5) is fixed to the top end of the cross brace mounting rod (101) at the upper side. The digital display controller (5) is electrically connected to two tension and pressure sensors (6) for displaying detected tension data. 7. The stretch fabric strength testing device according to claim 1, characterized in that: Two U-shaped mounting frames are symmetrically welded on each of the clamping plates (4), and the top wheel (401) cooperates with the rotating rod of the U-shaped mounting frame. 8. The stretch fabric strength testing device according to claim 1, characterized in that: In a normal state, the four clamping plates (4) are in a state of being close to each other, and the top wheel (401) and the top push rod (103) remain separated; During the test, the elastic fabric (7) is threaded and placed between the four clamping plates (4). 9. The stretch fabric strength testing device according to claim 1, characterized in that: The push rod (103) is arranged horizontally and longitudinally, and the welding angle between the push rod (103) and the cross brace mounting rod (101) is 90 degrees.