CN220650305U - Tensile force testing device of high-strength lamp box cloth - Google Patents

Abstract

The utility model relates to the field of lamp box cloth processing, and particularly discloses a tension testing device of high-strength lamp box cloth, which comprises a machine table, a first support and a second support, wherein the first support and the second support are oppositely arranged on the machine table, a first clamp is arranged on the first support, a second clamp is movably arranged on the second support along a first direction, and the lamp box cloth is clamped between the first clamp and the second clamp during testing; the second support is provided with a force application mechanism for applying test tension, the force application mechanism comprises a moving rod, a mounting frame and a supporting roller, the moving rod can be arranged on the second support in a moving mode along the second direction, the second direction is perpendicular to the first direction, the moving rod is provided with a bevel portion, the mounting frame is connected to a second clamp, the supporting roller is connected to the mounting frame, the supporting roller is matched with the bevel portion, and the testing device can enable the testing process to be more labor-saving, reduces the testing cost and improves the reliability of the testing process.

Description

Tensile force testing device of high-strength lamp box cloth

Technical Field

The utility model relates to the field of lamp house cloth processing, in particular to a tension testing device for high-strength lamp house cloth.

Background

The black base cloth is usually a lamp box cloth formed by laminating and pressing an upper layer of PVC film and a lower layer of PVC film through a heated light guide fiber net, and is used for displaying large-scale outdoor advertisements, wherein the thickness of the black base cloth can reach 300-350 g/square meter, the tensile strength is high, and the black base cloth is particularly suitable for occasions of external polishing. High strength lamp house cloth, like 550 black base cloth, after being formed by a bonding method or a knife coating method, requires that a tensile strength test be performed on the cloth sample.

In this regard, the applicant has proposed chinese patent publication No. CN211697240U, publication No. 2020-10-16, which specifically discloses a fire-resistant antistatic lamp box cloth strength detecting device, which comprises a base plate, a fixing clamp for clamping cloth, a telescopic rod for applying tension, a support seat for supporting cloth, and the like, which are positioned on the base plate. The scheme has the following potential defects in the implementation process, namely, the telescopic rod is used for applying tension to the lamp box cloth on the clamp, and the telescopic rod is usually formed by a stretching cylinder, so that on one hand, the irregular rollback phenomenon can be generated due to unstable air pressure when the tension of the stretching cylinder is large, further the tension test precision is affected, and on the other hand, when the high-strength lamp box cloth is linearly pulled, the consumed tension is large, the test cost can be increased, and meanwhile, the service life of equipment is reduced.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art, and provides the tension testing device for the high-strength lamp box cloth, which can save more labor in the testing process, reduce the testing cost and improve the stability and reliability of the testing process.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the tension testing device for the high-strength lamp box cloth comprises a machine table, a first support and a second support, wherein the first support and the second support are oppositely arranged on the machine table, a first clamp is arranged on the first support, a second clamp is movably arranged on the second support along a first direction, and the lamp box cloth is clamped between the first clamp and the second clamp during testing; the second support is provided with a force application mechanism for applying test tensile force, the force application mechanism comprises a moving rod, a mounting frame and a supporting roller, the moving rod is movably arranged on the second support along a second direction, the second direction is perpendicular to the first direction, the moving rod is provided with a bevel portion, the mounting frame is connected to a second clamp, the supporting roller is connected to the mounting frame, and the supporting roller is matched with the bevel portion, so that the supporting roller can be pushed to move along the first direction when the bevel portion moves along the first direction.

In the technical scheme, the force application mechanism drives the inclined surface part to extrude the supporting roller on the mounting frame by driving the moving rod to move along the second direction, so as to push the second clamp to move along the first direction, and the tensile force test is implemented on the lamp box cloth between the first clamp and the second clamp. Compared with the traditional cylinder straight-pull type scheme, the scheme skillfully utilizes the inclined plane to stretch the lamp box cloth, the same distance of stretching needs smaller pulling force, and meanwhile, the inclined plane is in rolling fit with the idler wheel, so that the effect of saving labor can be achieved, the testing cost is reduced, and meanwhile, the stability and the reliability of the testing process are improved.

In order to optimize the technical scheme, the following technical measures are also adopted:

as a preferred embodiment, the second support is provided with a clamping rail penetrating through the side wall along the transverse direction, the moving rod is connected in the clamping rail, and one side of the second support is provided with a tension cylinder for pulling the moving rod.

As a preferable implementation mode, the second support is provided with a second sleeve, a second guide rod is sleeved in the second sleeve in a sliding mode, and the second clamp is connected with the second guide rod.

As a preferred embodiment, one end of the second sleeve is provided with a positioning shoulder, the second guide rod is provided with a flange part, and a buffer spring wound on the outer side of the second guide rod is connected between the positioning shoulder and the flange part.

As a preferred embodiment, the second support is provided with a through hole communicated with the second sleeve, a linear buffer is arranged in the through hole, and one end of the linear buffer extends into the second sleeve so as to be suitable for limiting the second guide rod.

As a preferred embodiment, the first clamp is movably connected to the first support, and a positioning adjusting mechanism for adjusting the position of the first clamp is arranged on the first support.

As a preferable implementation mode, the first support is provided with a first sleeve, a first guide rod is sleeved in the first sleeve in a sliding mode, and the second clamp is connected with the first guide rod.

As a preferred embodiment, the positioning adjusting mechanism comprises a stud, a first movable seat, a second movable seat and a connecting rod, wherein the stud is connected to the first support, the stud is dragged by a driving motor, the stud is provided with a first threaded section and a second threaded section which are opposite in rotation direction, the second movable seat is connected to the first threaded section, the second movable seat is connected to the second threaded section, and the first movable seat, the second movable seat and the first clamp are respectively hinged with the connecting rod.

As the preferred implementation mode, first anchor clamps include locating plate, pinch roller and connecting seat, wherein the locating plate is connected on first guide arm, the connecting seat sets up to two and both set up relatively on the locating plate, two be connected with the pinch roller between the connecting seat, the one end of pinch roller is connected with the accommodate motor that has self-locking function.

As a preferable implementation mode, the machine table is also provided with a supporting roller for supporting the lamp box cloth.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following brief description of the drawings of the embodiments will make it apparent that the drawings in the following description relate only to some embodiments of the present utility model and are not limiting of the present utility model.

Fig. 1 is a general structural schematic diagram of the first embodiment;

FIG. 2 is a schematic view of the front structure of the first embodiment;

FIG. 3 is a schematic cross-sectional view of section B-B of FIG. 2;

FIG. 4 is a schematic side view of the first embodiment;

fig. 5 is a schematic broken view of a portion of the structure of fig. 3.

Reference numerals:

a machine 1; a support roller 2; a first support 3; a first clamp 31; a positioning plate 311; a nip roller 312; a connection base 313; an adjustment motor 314; a positioning adjustment mechanism 32; a stud 321; a partition 322; a first movable base 323; a second movable seat 324; a connecting rod 325; a drive motor 326; a first sleeve 33; a first guide bar 34; a second support 4; a second clamp 41; a second sleeve 43; a second guide bar 44; a linear buffer 45; a locating shoulder 46; a buffer spring 47; a force application mechanism 5; a clip rail 51; a moving lever 52; a sloping surface part 53; a mounting bracket 54; a support roller 55; a tension cylinder 56.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the present utility model will be described in further detail with reference to the accompanying drawings. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

Unless defined otherwise, technical or scientific terms used in this patent document should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model belongs. The terms "first," "second," and the like in the description and in the claims, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Likewise, the terms "a," "an," or "the" and similar terms do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, is intended to mean that elements or items that are present in front of "comprising" or "comprising" are included in the word "comprising" or "comprising", and equivalents thereof, without excluding other elements or items. "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used merely to denote relative positional relationships, which may be changed accordingly when the absolute position of the object being described is changed, merely to facilitate description of the present utility model and to simplify description, and not to indicate or imply that the apparatus or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model.

Some embodiments of the present utility model are described in detail below with reference to the accompanying drawings. Features of the embodiments described below may be combined with each other without conflict.

Embodiment one:

referring to fig. 1 to 2, the present embodiment provides a tensile testing device for high-strength lamp box cloth, which includes a machine 1, a first support 3 and a second support 4, wherein the first support 3 and the second support 4 are oppositely disposed on the machine 1, the first support 3 is provided with a first fixture 31, the first support 3 and the second support 4 are C-shaped seats, two opposite bar-shaped frames are respectively connected between the seats of the first support 3 and the second support 4, the second support 4 is movably disposed with a second fixture 41 along a first direction, in this embodiment, the first direction is, for example, along a length direction of the machine, and the lamp box cloth is clamped between the first fixture 31 and the second fixture 41 during testing. The second support 4 is provided with a force applying mechanism 5 for applying a test tensile force, and the force applying mechanism 5 includes a moving rod 52, a mounting bracket 54 and a supporting roller 55, wherein the moving rod 52 is movably disposed on the second support 4 along a second direction, which is perpendicular to the first direction, and the second direction is along a width direction of the second support 4, and referring to fig. 5, an arrow X1 shows the second direction, and in some embodiments, may also be along a height direction of the machine table 1, which is not limited herein. And the inclined surface part 53 is arranged on the moving rod 52, the mounting frame 54 is connected to the second clamp 41, the supporting roller 55 is connected to the mounting frame 54, and the supporting roller 55 is matched with the inclined surface part 53 so as to push the supporting roller 55 to move along the first direction when the inclined surface part 53 moves along the first direction. Preferably, here, two opposite mounting brackets 54 are connected to the second clamp 41, and a bar-shaped hole is provided in the second support 4, through which the mounting brackets 54 extend to the area enclosed by the second support 4.

Referring to fig. 3, in the present embodiment, a clamping rail 51 penetrating through a sidewall in a lateral direction is provided on the second support 4, a moving rod 52 is connected in the clamping rail 51, and a tension cylinder 56 for pulling the moving rod 52 is provided at one side of the second support 4. Here, the support rollers 55 are provided on both the mounting frames 54, and the inclined surface portions 53 which are in contact engagement with the two support rollers 55 are provided on the moving lever 52. Preferably, the top of the inclined surface portion 53 is provided with a planar supporting portion extending in the transverse direction, and when the lamp house cloth reaches the limit tension, the supporting roller 55 is transited from the inclined surface portion 53 to the planar supporting portion, and the direction of the applied tension and the direction of the movement of the moving rod 52 are perpendicular to each other, so that the position of the supporting roller 55 in the tension direction is locked, thereby improving the accuracy of the intensity test of the lamp house cloth.

Referring to fig. 1 and 3, in the present embodiment, a second sleeve 43 is disposed on the second support 4, a second guide rod 44 is slidably sleeved in the second sleeve 43, the second clamp 41 is connected with the second guide rod 44, a positioning shoulder 46 is disposed at one end of the second sleeve 43, a flange portion is disposed on the second guide rod 44, and a buffer spring 47 wound on the outer side of the second guide rod 44 is connected between the positioning shoulder 46 and the flange portion. The buffer spring 47 can effectively buffer the tension change of the second clamp to the lamp box cloth, so that the process of implementing the tension test on the lamp box cloth is more stable and reliable. In order to prevent the second guide rod 44 from excessively stretching the buffer spring 47 when the lamp box is broken, so as to impact the structures such as the second clamp, and the like, a through hole communicated with the second sleeve 43 is formed in the second support 4, a linear buffer 45 is arranged in the through hole, and one end of the linear buffer 45 extends into the second sleeve 43 so as to be suitable for limiting and buffering the second guide rod 44, thereby effectively improving the safety and reliability when the lamp box is broken.

As shown in fig. 1 and 3, the first clamp 31 and related structures will be described in detail below, the first clamp 31 is movably connected to the first support 3, specifically, the first support 3 is provided with a first sleeve 33, one end of the first sleeve 33 is fixed on the bar frame by a screw, a first guide rod 34 is slidably sleeved in the first sleeve 33, and the second clamp 41 is connected to the first guide rod 34. And the first holder 3 is provided with a positioning adjusting mechanism 32 for adjusting the position of the first clamp 31. Through setting up of location adjustment mechanism 32, can adjust the interval between first anchor clamps 31 and the second anchor clamps 41 under the initial condition to adapt to the clamping needs of different length lamp house cloth, increase the adaptability of device.

Specifically, the positioning adjusting mechanism 32 includes a stud 321, a first movable seat 323, a second movable seat 324, and a connecting rod 325, wherein the stud 321 is connected to the first support 3, the stud 321 is dragged by a driving motor 326, the stud 321 has a first threaded section and a second threaded section with opposite rotation directions, the first threaded section and the second threaded section are separated by a partition 322, the partition 322 is fixed on the machine table 1, the first movable seat 323 is connected to the first threaded section, the second movable seat 324 is connected to the second threaded section, and the first movable seat 323, the second movable seat 324, and the first clamp 31 are respectively hinged with the connecting rod 325. When the position of the first clamp 31 needs to be adjusted, the driving motor 326 is started, the stud 321 rotates to drive the first movable seat 323 and the second movable seat 324 to move relatively, so as to push the two connecting rods 325 to swing, drive the first clamp 31 to move towards the second clamp 41, thereby reducing the distance between the first clamp 31 and the second clamp 41, otherwise, increasing the distance between the first clamp 31 and the second clamp 41, and further adapting to the length of the lamp box cloth to be tested in a stretching manner.

Specifically, the first fixture 31 includes a positioning plate 311, a clamping roller 312, and a connection base 313, where the positioning plate 311 is connected to the first guide rod 34, the connection base 313 is provided in two and opposite to each other on the positioning plate 311, the clamping roller 312 is connected between the two connection bases 313, and one end of the clamping roller 312 is connected with an adjusting motor 314 having a self-locking function. Here, the second jig 41 may have the same structure as the first jig 31, and a positioning plate of the second jig 41 is connected to the second guide bar 44, and a hinge portion is provided on the positioning plate of the first jig 31 to be hinged to the link 325. Wherein the clamping roller 312 is provided with a pressing strip for pressing and fixing one end of the lamp box cloth.

In order to increase the supporting stability of the lamp box cloth in the testing process, the machine table 1 is also provided with a supporting roller 2 for supporting the lamp box cloth.

Referring to fig. 3 and 5, the working principle of the present embodiment is as follows: when the tension test is required to be carried out on the lamp box cloth, firstly, the distance between the first clamp 31 and the second clamp 41 is adjusted according to the length of the lamp box cloth, namely, the driving motor 326 is started, the stud 321 rotates to drive the first movable seat 323 and the second movable seat 324 to move relatively or reversely, the two connecting rods 325 are pushed to swing to drive the first clamp 31 and the second clamp 41 to reduce or increase the distance, the lamp box cloth is arranged between the first clamp 31 and the second clamp 41, after the position of the first clamp 31 is fixed, the tension cylinder 56 is opened, the movable rod 52 is pushed to move along the width direction of the machine table 1, the supporting roller 55 is extruded through the inclined surface part 53 to drive the second clamp 41 to move towards the direction of stretching the lamp box cloth, so that the tension test is carried out on the lamp box cloth by skillfully utilizing the inclined surface, the tension test is carried out on the lamp box cloth at the same distance, meanwhile, the friction resistance is small due to rolling fit between the inclined surface and the roller, the effect is small, the labor saving effect is achieved, the test cost is reduced, and the stability and reliability of the test process are improved.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present utility model should be included in the present utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims (10)

1. The tension testing device for the high-strength lamp box cloth comprises a machine table, a first support and a second support, wherein the first support and the second support are oppositely arranged on the machine table, a first clamp is arranged on the first support, a second clamp is movably arranged on the second support along a first direction, and the lamp box cloth is clamped between the first clamp and the second clamp during testing; the method is characterized in that:

the second support is provided with a force application mechanism for applying test tensile force, the force application mechanism comprises a moving rod, a mounting frame and a supporting roller, the moving rod is movably arranged on the second support along a second direction, the second direction is perpendicular to the first direction, the moving rod is provided with a bevel portion, the mounting frame is connected to a second clamp, the supporting roller is connected to the mounting frame, and the supporting roller is matched with the bevel portion, so that the supporting roller can be pushed to move along the first direction when the bevel portion moves along the first direction.

2. The tension testing device for high-strength lamp box cloth according to claim 1, wherein a clamping rail penetrating through the side wall along the transverse direction is arranged on the second support, the moving rod is connected in the clamping rail, and a tension cylinder for pulling the moving rod is arranged on one side of the second support.

3. The tension testing device for the high-strength lamp box cloth according to claim 1, wherein a second sleeve is arranged on the second support, a second guide rod is sleeved in the second sleeve in a sliding manner, and the second clamp is connected with the second guide rod.

4. The tension testing device of high-strength lamphouse cloth according to claim 3, wherein one end of the second sleeve is provided with a positioning shoulder, the second guide rod is provided with a flange part, and a buffer spring wound on the outer side of the second guide rod is connected between the positioning shoulder and the flange part.

5. The tension testing device of high-strength lamp box cloth according to claim 4, wherein the second support is provided with a through hole communicated with the second sleeve, a linear buffer is installed in the through hole, and one end of the linear buffer extends into the second sleeve to be suitable for limiting the second guide rod.

6. The tension testing device of high-strength lamp house cloth according to claim 1, wherein the first clamp is movably connected to the first support, and a positioning adjusting mechanism for adjusting the position of the first clamp is provided on the first support.

7. The tension testing device of high-strength lamp box cloth according to claim 6, wherein a first sleeve is arranged on the first support, a first guide rod is sleeved in the first sleeve in a sliding manner, and the second clamp is connected with the first guide rod.

8. The tension testing device of high-strength lamp box cloth according to claim 6 or 7, wherein the positioning adjusting mechanism comprises a stud, a first movable seat, a second movable seat and a connecting rod, wherein the stud is connected to the first support, the stud is dragged by a driving motor, the stud is provided with a first threaded section and a second threaded section which are opposite in rotation direction, the second movable seat is connected to the first threaded section, the second movable seat is connected to the second threaded section, and the connecting rod is hinged between the first movable seat, the second movable seat and the first clamp respectively.

9. The tension testing device of high-strength lamp box cloth according to claim 7, wherein the first clamp comprises a positioning plate, clamping rollers and connecting seats, wherein the positioning plate is connected to the first guide rod, the two connecting seats are oppositely arranged on the positioning plate, the clamping rollers are connected between the two connecting seats, and one end of each clamping roller is connected with an adjusting motor with a self-locking function.

10. The tension testing device for high-strength lamp house cloth according to claim 1, wherein a support roller for supporting the lamp house cloth is further provided on the machine.