Tensile testing device for high-strength tensile film production

Abstract

The utility model relates to the technical field of tensile film detection, in particular to a tensile test device for high-strength tensile film production, which comprises a test board, mounting plates are symmetrically mounted on the test board in a sliding manner, support plates are mounted on the two mounting plates through test components, threaded holes are symmetrically formed in the upper ends of the support plates, and the threaded holes are connected with the test components. First threaded rods are inserted into the two threaded holes in a threaded mode, a fixing plate is arranged at the lower ends of the two first threaded rods, the upper surface of the fixing plate is rotationally connected with the lower ends of the first threaded rods, a rectangular plate is arranged between the fixing plate and the supporting plate, and the rectangular plate is suspended above the fixing plate through a mounting assembly. According to the utility model, one end of the stretching film is folded among the supporting plate, the rectangular plate and the fixing plate, so that a strong and stable clamping force can be generated, the stretching film is reliably fixed, the condition that the stretching film displaces or falls off in the test process is effectively avoided, and the accuracy of a test result is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to stretch film detection technical field especially relates to high strength stretch film production is with tensile testing device. BACKGROUND

[0002] High strength stretch film is also called heat shrinkable film, and is used for the sale and transportation of various products, and its main function is to stabilize, cover and protect the products, and the stretch film must have high puncture resistance, good shrinkage and certain shrinkage stress, and in the production process of high strength stretch film, accurate testing of the tensile property of the stretch film is a key link to guarantee product quality.

[0003] The Chinese patent with publication number CN213456386U discloses a kind of high strength stretch film production is with tensile testing device, and the tensile test is carried out to different model sizes of the stretch film to be measured, for test result, can be directly observed and counted, suitable for the test experiment of factory production, improve test efficiency, make test result more scientific and accurate, convenient for test personnel operation, the cultural requirement of test personnel is low, and it is convenient to realize batch testing.

[0004] In the above patent document, one end of the stretch film is fixed between the two fixed plates, and the mechanical design of the film fixing part is poor, and the fixing force of the stretch film is insufficient, and the stretch film is prone to displacement or even falling off during testing, which seriously interferes with the accuracy of the test result. UTILITY MODEL CONTENT

[0005] The utility model aims at solving the following shortcomings in the prior art, the mechanical design of the film fixing part is poor, and the fixing force of the stretch film is insufficient, and the stretch film is prone to displacement or even falling off during testing, which seriously interferes with the accuracy of the test result, and the high strength stretch film production is with tensile testing device.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] The tensile testing device for high strength stretch film production comprises a test table, a mounting plate is symmetrically and slidably installed on the test table through a transmission assembly, and a support plate with a longitudinal section in L shape is installed on the two mounting plates through a test assembly.

[0008] Threaded holes are symmetrically formed in the upper end of the support plate, first threaded rods are threadedly inserted into the two threaded holes, adjusting blocks are fixedly installed on the upper ends of the two first threaded rods, and fixed plates are arranged at the lower ends of the two first threaded rods.

[0009] Preferably, the mounting assembly comprises two connecting blocks fixedly mounted at two ends of the rectangular plate respectively and a plurality of pull ropes fixedly mounted on upper surfaces of the two connecting blocks respectively, one end of the pull ropes being fixedly connected with the supporting plate.

[0010] Preferably, the supporting plate is made of metal iron, and a magnetic strip is magnetically attracted to an upper end of the supporting plate.

[0011] Preferably, the transmission assembly comprises a mounting seat fixedly mounted on the test table, two second threaded rods with opposite screw directions rotatably mounted at left and right ends of the mounting seat, a driving motor fixedly mounted on the test table, and two moving blocks symmetrically sleeved on the second threaded rods, the two moving blocks sliding on the mounting seat and being fixedly connected with the two mounting plates respectively, and an output end of the driving motor being fixedly connected with one end of the second threaded rods.

[0012] Preferably, the test assembly comprises a sliding rail fixedly mounted on the mounting plate, a sliding block slidingly mounted on the sliding rail, and a tension sensor fixedly mounted on the sliding rail, an input end of the tension sensor being fixedly connected with the sliding block.

[0013] Preferably, rounded corners are formed at two sides of the rectangular plate, and an anti-skid sleeve is wrapped on a surface of the rectangular plate.

[0014] In the utility model, the beneficial effects are that:

[0015] When fixing one end of the stretch film, the one end of the stretch film is sequentially threaded between the rectangular plate and the fixed plate and between the rectangular plate and the supporting plate, then the fixed plate is driven to move towards the supporting plate, the one end of the stretch film is folded between the supporting plate, the rectangular plate and the fixed plate, strong and stable clamping force can be generated, the stretch film can be reliably fixed, displacement or falling of the stretch film in the testing process can be effectively prevented, and the accuracy of the testing result is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 Fig. 1 is a front view of a perspective structure of a stretch testing device for high-strength stretch film production according to the utility model;

[0017] Figure 2 Fig. 4 is a perspective structure diagram of the test table and the transmission assembly;

[0018] Figure 3 Fig. 5 is a perspective structure diagram of the mounting plate, the test assembly, the supporting plate, the rectangular plate and the fixed plate;

[0019] Figure 4 Fig. 6 is an enlarged view of a front view structure of the stretch film when being fixed.

[0020] In the figure: 1 test bench, 2 mounting plate, 3 support plate, 4 first threaded rod, 5 adjusting block, 6 fixed plate, 7 rectangular plate, 8 connecting block, 9 pull rope, 10 magnetic strip, 11 mounting seat, 12 second threaded rod, 13 moving block, 14 drive motor, 15 slide rail, 16 sliding block, 17 tension sensor. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0022] Reference Figures 1-4 The stretching test device for high-strength stretching film production comprises a test bench 1, mounting plates 2 are symmetrically and slidably installed on the test bench 1 through a transmission assembly, and support plates 3 with a longitudinal section in the shape of L are installed on the two mounting plates 2 through test assemblies.

[0023] Threaded holes are symmetrically formed in the upper end of the support plate 3, first threaded rods 4 are threadedly inserted into the two threaded holes, adjusting blocks 5 are fixedly installed at the upper ends of the two first threaded rods 4, fixed plates 6 are arranged at the lower ends of the two first threaded rods 4, the upper surfaces of the fixed plates 6 are rotatably connected with the lower ends of the first threaded rods 4, rectangular plates 7 are arranged between the fixed plates 6 and the support plates 3, the rectangular plates 7 are suspended above the fixed plates 6 through mounting assemblies, the mounting assemblies comprise two connecting blocks 8 fixedly installed at the two ends of the rectangular plates 7 and a plurality of pull ropes 9 fixedly installed on the upper surfaces of the two connecting blocks 8, and one end of each pull rope 9 is fixedly connected with the support plate 3.

[0024] The rectangular plates 7 are installed below one end of the support plate 3 through the connecting blocks 8 and the pull ropes 9, in the process of fixing the stretching film, one end of the stretching film is passed through the gap between the rectangular plate 7 and the fixed plate 6, is then bent, is passed through the gap between the rectangular plate 7 and the support plate 3 again, the two adjusting blocks 5 are then rotated to drive the two first threaded rods 4 to rotate, the fixed plates 6 are moved upward under the action of the threaded holes, the rectangular plates 7 are moved upward in the process that the fixed plates 6 are moved upward, the rectangular plates 7 can be clamped between the fixed plates 6 and the support plates 3, one end of the stretching film is folded between the support plate 3, the fixed plate 6 and the rectangular plate 7, strong and stable clamping force can be generated, the stretching film can be reliably fixed, the displacement or falling of the stretching film in the process of testing can be effectively prevented, and the accuracy of the test result can be greatly improved.

[0025] The support plate 3 is made of metal iron, and a magnetic strip 10 is magnetically attracted to the upper end of the support plate 3, when one end of the stretching film is passed through the rectangular plate 7 and the support plate 3, one end of the stretching film can be placed on the upper end of the support plate 3, the magnetic strip 10 is then pressed on the stretching film to fix one end of the stretching film on the upper end of the support plate 3, and the preliminary fixing effect is achieved.

[0026] The transmission assembly comprises a mounting base 11 fixedly installed on the test table 1, two second threaded rods 12 with opposite threaded directions rotatably installed at the left and right ends of the mounting base 11, a driving motor 14 fixedly installed on the test table 1, and two moving blocks 13 symmetrically sleeved on the second threaded rods 12, the two moving blocks 13 sliding on the mounting base 11 and being fixedly connected with the two mounting plates 2 respectively, and the output end of the driving motor 14 is fixedly connected with one end of the second threaded rod 12.

[0027] When the stretching film is subjected to the stretching test, the driving motor 14 is started to drive the second threaded rod 12 to rotate, the two moving blocks 13 are driven to move away from each other by the second threaded rod 12, the two supporting plates 3 are driven to move away from each other, and the two ends of the stretching film are driven to move away from each other, so that the stretching test is realized.

[0028] The test assembly comprises a sliding rail 15 fixedly installed on the mounting plate 2, a sliding block 16 slidingly installed on the sliding rail 15, and a tension sensor 17 fixedly installed on the sliding rail 15, the input end of the tension sensor 17 is fixedly connected with the sliding block 16, the sliding block 16 slides on the sliding rail 15, when the two moving blocks 13 move away from each other, the two supporting plates 3 pull the two ends of the stretching film, at this time, the sliding block 16 has a tendency to move away from the tension sensor 17, and the tendency of movement is converted into the tension on the tension sensor 17, so that detailed and reliable data support is provided for the evaluation of the performance of the stretching film.

[0029] The two sides of the rectangular plate 7 are provided with rounded corners, and the surface of the rectangular plate 7 is wrapped with an anti-skid sleeve, when the stretching film contacts the rectangular plate 7, the rounded corners can prevent the surface of the stretching film from being damaged, and the anti-skid sleeve can increase the friction between the stretching film and the support of the rectangular plate 7, so that the stability of fixing the stretching film is further improved.

[0030] In the utility model, when the stretching film is fixed, one end of the stretching film is inserted through the gap between the rectangular plate 7 and the fixed plate 6, then is bent, is inserted through the gap between the rectangular plate 7 and the supporting plate 3 again, two adjusting blocks 5 are rotated to drive the two first threaded rods 4 to rotate, under the action of the threaded hole, the fixed plate 6 is driven to move upwards, when the fixed plate 6 moves upwards, the rectangular plate 7 is driven to move upwards, the rectangular plate 7 is clamped between the fixed plate 6 and the supporting plate 3, one end of the stretching film is folded between the supporting plate 3, the fixed plate 6 and the rectangular plate 7, strong and stable clamping force is generated, the stretching film is reliably fixed, the situation that the stretching film is displaced or falls off during the test is effectively eliminated, and the accuracy of the test result is greatly improved.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A tensile testing apparatus for producing high-strength stretch film, comprising a testing table (1), characterized in that, The test bench (1) is symmetrically and slidably mounted with mounting plates (2) via a transmission assembly. Each of the two mounting plates (2) is mounted with a support plate (3) with an L-shaped longitudinal section via a test assembly. The support plate (3) has symmetrical threaded holes at its upper end. A first threaded rod (4) is threaded into each of the two threaded holes. An adjusting block (5) is fixedly installed at the upper end of each of the two first threaded rods (4). A fixing plate (6) is provided at the lower end of each of the two first threaded rods (4). The upper surface of the fixing plate (6) is rotatably connected to the lower end of the first threaded rod (4). A rectangular plate (7) is provided between the fixing plate (6) and the support plate (3). The rectangular plate (7) is suspended above the fixing plate (6) by an installation component.

2. The tensile testing device for producing high-strength stretch film according to claim 1, characterized in that, The installation assembly includes two connecting blocks (8) fixedly installed at both ends of a rectangular plate (7) and multiple pull ropes (9) fixedly installed on the upper surfaces of the two connecting blocks (8), with one end of each pull rope (9) fixedly connected to a support plate (3).

3. The tensile testing device for producing high-strength tensile film according to claim 1, characterized in that, The support plate (3) is made of metal iron, and a magnetic strip (10) is magnetically attracted to the upper end of the support plate (3).

4. The tensile testing device for producing high-strength stretch film according to claim 1, characterized in that, The transmission assembly includes a mounting base (11) fixedly mounted on the test bench (1), a second threaded rod (12) with opposite thread directions at its left and right ends rotatably mounted on the mounting base (11), a drive motor (14) fixedly mounted on the test bench (1), and two symmetrical moving blocks (13) threaded onto the second threaded rod (12). The two moving blocks (13) slide on the mounting base (11) and are fixedly connected to the two mounting plates (2) respectively. The output end of the drive motor (14) is fixedly connected to one end of the second threaded rod (12).

5. The tensile testing device for producing high-strength tensile film according to claim 1, characterized in that, The test assembly includes a slide rail (15) fixedly mounted on the mounting plate (2), a slider (16) slidably mounted on the slide rail (15), and a tension sensor (17) fixedly mounted on the slide rail (15). The input end of the tension sensor (17) is fixedly connected to the slider (16).

6. The tensile testing device for producing high-strength stretch film according to claim 1, characterized in that, The rectangular plate (7) has rounded corners on both sides, and the surface of the rectangular plate (7) is covered with an anti-slip sleeve.

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