A device for detecting the properties of a stretched film

Abstract

The utility model relates to a kind of tensile film performance detection device, belong to film processing technical field.The tensile film performance detection device, including: bottom plate, the upper end of the bottom plate near end part is fixedly connected with two upper frames;Stretching detection mechanism, the stretching detection mechanism is installed in the upper end of bottom plate, the end of the stretching detection mechanism extends to the inside of one end the upper frame;Wherein, the stretching detection mechanism includes the guide assembly installed in the upper end of bottom plate, one end of the guide assembly is connected with servo motor, the servo motor is installed in the inside of one end the upper frame;Through the stretching detection mechanism being set, the surface of rubber sheet is contacted with film, through the surface contact of two helical rubber sheets with adjacent film when rotating, and film will be flattened between two rubber sheets, reduce the folding of film surface and so on, so that during the stretching detection process, the surface of film is evenly stressed, improve the accuracy of tensile performance detection.

Description

Technical Field

[0001] This utility model relates to the field of thin film processing technology, and in particular to a device for testing the performance of stretch films. Background Technology

[0002] Stretch film is a type of plastic film with high tensile strength, widely used in logistics, warehousing, and packaging. Its high tensile strength, with an elongation rate of 200%-500%, allows for tight wrapping of goods through bidirectional cold stretching, preventing scattering or shifting during transportation. Pre-stretching technology reduces the risk of packaging breakage and lowers manual packaging costs. Stretch film must withstand external forces such as compression and pulling during transportation; testing its tensile strength and elongation at break ensures the packaging will not break. A search of existing Chinese patent technology reveals a device for testing the tensile properties of a thin film, with publication number CN220231273U. This device moves an anti-slip pad and then fixes the film by rotating a second bolt. However, during the tensile testing of the film, the film may fold and wrinkle when it is fixed, resulting in uneven stress during the stretching process, which affects the accuracy of the test data. Utility Model Content

[0003] Therefore, it is necessary to provide a tensile membrane performance testing device to address the problem that during membrane tensile testing, the membrane may overlap and wrinkle when fixed, resulting in uneven stress during the tensile process and thus affecting the accuracy of the test data.

[0004] A stretch film performance testing device is provided, comprising: a base plate, wherein two upper frames are fixedly connected to the upper end of the base plate near its end; a stretch testing mechanism, wherein the stretch testing mechanism is installed on the upper end of the base plate, and the end of the stretch testing mechanism extends to the inner side of one end of the upper frame; wherein the stretch testing mechanism includes a guide assembly installed on the upper end of the base plate, one end of the guide assembly is connected to a servo motor, the servo motor is installed inside one end of the upper frame, and a flattening assembly is provided at the upper end of the guide assembly.

[0005] In one embodiment, the guide assembly includes a rotating shaft rotatably connected between two upper frames. One end of the rotating shaft is fixedly connected to the output shaft of a servo motor. Slide rails are provided on both sides of the rotating shaft. The slide rails are fixedly connected to the upper end of the base plate. Two threaded sleeves are threadedly connected to the surface of the rotating shaft. A cross plate is fixedly connected to the upper end of the threaded sleeves.

[0006] In one embodiment, the flattening assembly includes a fixing block fixedly connected to the upper end of the horizontal plate, a clamping slider is provided on one side of the fixing block, the clamping slider is slidably connected to the upper end of the horizontal plate, and an inner groove is provided on the inclined surface of the side adjacent to the clamping slider and the fixing block.

[0007] In one embodiment, the horizontal plate is fixedly connected to the lower end of the flattening assembly, and two connecting brackets are fixedly connected to the lower end of the horizontal plate away from the threaded sleeve.

[0008] In one embodiment, a sliding seat is fixedly connected to the lower end of the connecting frame, and the sliding seat is slidably connected to the surface of the slide rail.

[0009] In one embodiment, the clamping slider has a threaded hole on the side away from the fixing block, and the threaded hole extends to the outside of the fixing block.

[0010] In one embodiment, a rotating rod is rotatably connected to the inner wall of the inner groove. One end of the rotating rod extends through to the outside of the inner groove and is fixedly connected to a gear, with the two gears meshing together.

[0011] In one embodiment, two rubber sheets are fixedly connected to the surface of the rotating rod, and the two rubber sheets have opposite spiral directions. Beneficial effects

[0012] 1. The above-mentioned stretch film performance testing device, through the set stretch testing mechanism, the surface of the rubber sheet contacts the film, and the two spiral rubber sheets contact the surface of the adjacent film when rotating, and flatten the film between the two rubber sheets, reducing the overlapping of wrinkles on the film surface, so that the surface of the film is subjected to uniform force during the stretch testing process, and improving the accuracy of the stretch performance testing. 2. The device, through the guide component, can drive the horizontal plate to move in the opposite direction through the threaded sleeve, so that the flattening component can form a uniform and stable stretching effect on the film. The stretching is carried out along the guide rail by the sliding seat, maintaining the guiding stability during the stretching process and making the stretching effect more uniform. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2This is a partial structural schematic diagram of the tensile testing mechanism of this utility model; Figure 3 This is an exploded view of the guide component of this utility model; Figure 4 This is a schematic diagram of the flattening component structure of this utility model; Figure 5 This is a partial structural diagram of the flattening component of this utility model.

[0015] Figure label: 1. Base plate; 2. Upper frame; 3. Tensile testing mechanism; 31. Guide assembly; 311. Rotating shaft; 312. Threaded sleeve; 313. Horizontal plate; 314. Connecting frame; 315. Sliding seat; 316. Slide rail; 32. Flattening assembly; 321. Fixing block; 322. Clamping slider; 323. Inner groove; 324. Threaded hole; 325. Rotating rod; 326. Rubber sheet; 327. Gear; 33. Servo motor. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0017] The following is combined Figures 1-5 This invention describes a stretch film performance testing device.

[0018] In one embodiment, a stretch film performance testing device includes: a base plate 1, with two upper frames 2 fixedly connected to the upper end of the base plate 1 near its end; a stretch testing mechanism 3, which is installed on the upper end of the base plate 1, with its end extending to the inner side of one upper frame 2; wherein the stretch testing mechanism 3 includes a guide assembly 31 installed on the upper end of the base plate 1, one end of the guide assembly 31 is connected to a servo motor 33, the servo motor 33 is installed inside the one upper frame 2, and a flattening assembly 32 is provided on the upper end of the guide assembly 31.

[0019] like Figure 1 , Figure 2 and Figure 3As shown, the guide assembly 31 includes a rotating shaft 311 rotatably connected between two upper frames 2. One end of the rotating shaft 311 is fixedly connected to the output shaft of the servo motor 33. Slide rails 316 are provided on both sides of the rotating shaft 311. The slide rails 316 are fixedly connected to the upper end of the base plate 1. Two threaded sleeves 312 are threadedly connected to the surface of the rotating shaft 311. A horizontal plate 313 is fixedly connected to the upper end of the threaded sleeve 312. The horizontal plate 313 is fixedly connected to the lower end of the flattening assembly 32. Two connecting brackets 314 are fixedly connected to the lower end of the horizontal plate 313 away from the threaded sleeves 312. A sliding seat 315 is fixedly connected to the lower end of the connecting bracket 314. The sliding seat 315 is slidably connected to the surface of the slide rail 316.

[0020] In this embodiment, the device drives the servo motor 33 to drive the rotating shaft 311 to rotate synchronously, and then drives the horizontal plate 313 to move in the opposite direction through the threaded sleeve 312, so that the flattening component 32 forms a uniform and stable stretching effect on the film. When the horizontal plate 313 moves, under the action of the connecting frame 314, it is stretched along the guide of the slide rail 316 through the sliding seat 315, maintaining the guiding stability during the stretching process, so that the stretching effect is more uniform. like Figure 2 , Figure 4 and Figure 5 As shown, the flattening assembly 32 includes a fixing block 321 fixedly connected to the upper end of the horizontal plate 313. A clamping slider 322 is provided on one side of the fixing block 321. The clamping slider 322 is slidably connected to the upper end of the horizontal plate 313. An inner groove 323 is provided on the inclined surface of the side adjacent to the clamping slider 322 and the fixing block 321. A threaded hole 324 is provided on the side of the clamping slider 322 away from the fixing block 321. The threaded hole 324 extends to the outside of the fixing block 321.

[0021] A rotating rod 325 is rotatably connected to the inner wall of the inner groove 323. One end of the rotating rod 325 extends through to the outside of the inner groove 323 and is fixedly connected to a gear 327. The two gears 327 mesh with each other. Two rubber sheets 326 are fixedly connected to the surface of the rotating rod 325. The two rubber sheets 326 have opposite spiral directions.

[0022] In this embodiment, the device uses the arc-shaped protrusion of the clamping slider 322 to slide towards the arc-shaped recess formed by the combination of the fixing block 321 and the horizontal plate 313, thereby forming a uniform clamping effect on the membrane. During the clamping process, the device rotates the rotating rod 325 through the gear 327 to make the two rotating rods 325 rotate synchronously, so that the surface of the rubber sheet 326 contacts the membrane. When the two spiral rubber sheets 326 rotate, they contact the surface of the adjacent membrane and flatten the membrane between the two rubber sheets 326, reducing the overlap of wrinkles on the membrane surface. This ensures that the surface of the membrane is subjected to uniform force during the tensile test, improving the accuracy of the tensile performance test.

[0023] Working principle: The membrane is placed between the clamping slider 322 and the horizontal plate 313, and the end of the membrane is held between the adjacent vertical surfaces of the fixing block 321 and the clamping slider 322. The bolt passes through the threaded hole 324 to keep the clamping slider 322 and the fixing block 321 gradually close together. When the membrane is clamped, the two rotating rods 325 of the gear 327 rotate synchronously, and the surface of the rubber sheet 326 contacts the membrane. The membrane is flattened between the two rubber sheets 326. The bolt is tightened again to firmly clamp the membrane between the fixing block 321 and the clamping slider 322. The servo motor 33 drives the rotating shaft 311 to rotate synchronously and drive the horizontal plate 313 to move in the opposite direction through the threaded sleeve 312. The flattening component 32 forms a uniform and stable stretching effect on the membrane. When the horizontal plate 313 moves, the connecting frame 314 stretches along the guide rail 316 through the sliding seat 315.

[0024] It should be noted that the servo motor 33 and other components mentioned above are all devices with relatively mature existing technologies. The specific model can be selected according to actual needs. At the same time, the servo motor 33 can be powered by an internal power supply or by AC power. The specific power supply method should be selected according to the situation, which will not be elaborated here.

[0025] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A device for testing the performance of stretch film, characterized in that, include: The base plate (1) has two upper frames (2) fixedly connected to its upper end near the end. Tensile testing mechanism (3), the tensile testing mechanism (3) is installed on the upper end of the base plate (1), and the end of the tensile testing mechanism (3) extends to the inner side of the upper frame (2) at one end; The tensile testing mechanism (3) includes a guide component (31) installed on the upper end of the base plate (1). One end of the guide component (31) is connected to a servo motor (33). The servo motor (33) is installed inside the upper frame (2) at one end. A flattening component (32) is provided on the upper end of the guide component (31).

2. The stretch film performance testing device according to claim 1, characterized in that, The guide assembly (31) includes a rotating shaft (311) rotatably connected between two upper frames (2). One end of the rotating shaft (311) is fixedly connected to the output shaft of a servo motor (33). Slide rails (316) are provided on both sides of the rotating shaft (311). The slide rails (316) are fixedly connected to the upper end of the base plate (1). Two threaded sleeves (312) are threadedly connected to the surface of the rotating shaft (311). A cross plate (313) is fixedly connected to the upper end of the threaded sleeves (312).

3. The stretch film performance testing device according to claim 2, characterized in that, The flattening assembly (32) includes a fixing block (321) fixedly connected to the upper end of the horizontal plate (313). A clamping slider (322) is provided on one side of the fixing block (321). The clamping slider (322) is slidably connected to the upper end of the horizontal plate (313). An inner groove (323) is provided on the inclined side of the clamping slider (322) and the fixing block (321) adjacent to each other.

4. The stretch film performance testing device according to claim 2, characterized in that, The horizontal plate (313) is fixedly connected to the lower end of the flattening assembly (32), and two connecting brackets (314) are fixedly connected to the lower end of the horizontal plate (313) away from the threaded sleeve (312).

5. The stretch film performance testing device according to claim 4, characterized in that, The lower end of the connecting frame (314) is fixedly connected to a sliding seat (315), and the sliding seat (315) is slidably connected to the surface of the slide rail (316).

6. The stretch film performance testing device according to claim 3, characterized in that, The clamping slider (322) has a threaded hole (324) on the side away from the fixed block (321), and the threaded hole (324) extends to the outside of the fixed block (321).

7. The stretch film performance testing device according to claim 3, characterized in that, The inner wall of the inner groove (323) is rotatably connected to a rotating rod (325). One end of the rotating rod (325) extends through to the outside of the inner groove (323) and is fixedly connected to a gear (327). The two gears (327) are meshed together.

8. The stretch film performance testing device according to claim 7, characterized in that, Two rubber sheets (326) are fixedly connected to the surface of the rotating rod (325), and the two rubber sheets (326) have opposite spiral directions.

Images