PET (Polyethylene Terephthalate) bottle blank compression resistance detection equipment

Abstract

The utility model discloses equipment for detecting the compressive property of a PET (Polyethylene Terephthalate) bottle blank. The equipment comprises a detection box, a controller mounted on the detection box, a camera mounted in the detection box, a conveying and fixing mechanism arranged between the detection box and a partition plate, an extruding mechanism arranged between the detection box and the partition plate, and an environment measuring mechanism arranged on the detection box. The humidity condition in the detection box can be detected through the humidity sensor, detection data are synchronized to the display screen, when the humidity is too high, the heating pipe can heat air in the detection box, so that the humidity in the detection box is reduced, the air in the detection box can be extracted through the air extractor, and the detection efficiency is improved. Air is discharged through the first air pipe and the second air pipe, so that air pressure balance in the detection box is maintained, when the temperature in the detection box reaches a preset threshold value of the temperature sensor, heat of the heating pipe is controlled to be output evenly, an environment suitable for PET bottle blank detection is built, and it is avoided that humidity influences detection data.

Description

Technical Field

[0001] This utility model belongs to the field of PET preform testing technology, and in particular relates to a device for testing the compressive strength of PET preforms. Background Technology

[0002] PET bottles refer to bottles containing a type of plastic material called polyethylene terephthalate, or simply PET, which is a polymer produced by the combination of terephthalic acid and ethylene glycol.

[0003] Utility model patent CN219675695U discloses a device for testing the compressive strength of PET preforms. The device includes a compressive strength testing platform, a support frame at the top of the platform, a control box on one side of the platform, a sliding plate slidably mounted inside the support frame, a lower pressure plate at the bottom of the sliding plate, a test sensor at the top of the lower pressure plate, a PET preform body at the top of the platform, symmetrically arranged fixing straps at the top of the platform, a second Velcro strap at the top of the platform, and a first Velcro strap on one side of the fixing straps. However, this device does not create a suitable testing environment. Excessive humidity in the testing environment can affect the test data. Furthermore, if the PET preform breaks during testing, fragments will scatter, and observation through the viewing window cannot ensure safety. Therefore, a device for testing the compressive strength of PET preforms has been proposed. Utility Model Content

[0004] The purpose of this invention is to provide a device for testing the compressive strength of PET preforms to solve the problems mentioned in the background art.

[0005] A device for testing the compressive strength of PET preforms includes a testing chamber, a controller installed on the testing chamber, a partition fixedly connected inside the testing chamber, a load-bearing plate fixedly connected inside the testing chamber, a camera installed inside the testing chamber, a conveying and fixing mechanism between the testing chamber and the partition, a squeezing mechanism between the testing chamber and the partition, and an environmental measurement mechanism on the testing chamber.

[0006] Furthermore, the controller is equipped with a display screen.

[0007] Furthermore, the transport and fixing mechanism includes a first electric push rod, a first connecting rod, a measuring plate, a sliding rod, a pressure sensor, a second electric push rod, a second connecting rod, and a clamp. The first electric push rod is fixedly installed on the testing box. The first electric push rod is connected to the telescopic rod of the first electric push rod, and the measuring plate is connected to the first connecting rod. The measuring plate has multiple sliding grooves and a notch. Two sliding rods are fixedly connected to the measuring plate and are slidably connected to the testing box. A pressure sensor is installed on the measuring plate. Two second electric push rods are fixedly installed on the partition. The second electric push rods are connected to the telescopic rods of the second electric push rods, and the clamps are connected to the second connecting rods.

[0008] Furthermore, the extrusion mechanism includes a hydraulic cylinder, a sliding rod, and an extrusion plate. The hydraulic cylinder is fixedly installed on the detection box, and the sliding rod is connected to the extension rod of the hydraulic cylinder. The sliding rod is slidably connected to the partition plate, and the extrusion plate is fixedly connected to the sliding rod.

[0009] Furthermore, the environmental measurement mechanism includes a temperature sensor, a humidity sensor, heating tubes, a mounting bracket, an air extractor, a first air pipe, and a second air pipe. The temperature sensor and the humidity sensor are installed inside the testing box. Multiple heating tubes are installed inside the testing box. Two mounting brackets are fixedly connected to the testing box. An air extractor is fixedly installed on the mounting brackets. The first air pipe connects the air extractor to the testing box, and the second air pipe is connected to the air extractor.

[0010] Furthermore, the testing box is equipped with a sealing mechanism, which includes a reinforcing frame, a third electric push rod, a third connecting rod, and a sealing plate. Two reinforcing frames are fixedly connected to the testing box, and a third electric push rod is fixedly installed on the reinforcing frame. A third connecting rod is connected to the telescopic rod of the third electric push rod, and a sealing plate is connected to the third connecting rod. The sealing plate is slidably connected to the testing box.

[0011] Furthermore, the clamp is equipped with a heat-insulating coating.

[0012] The beneficial effects of this utility model are:

[0013] 1. This utility model uses a humidity sensor to detect the humidity inside the testing chamber, and the detection data is synchronized to the display screen. When the humidity is too high, the heating element heats the air inside the testing chamber, thereby reducing the humidity. The air extractor draws air from the testing chamber and discharges it through the first and second air pipes, thereby maintaining the air pressure balance inside the testing chamber. When the temperature inside the testing chamber reaches the preset threshold of the temperature sensor, the heat from the heating element is controlled to be output evenly, thereby creating a suitable environment for PET preform testing and avoiding the impact of humidity on the test data.

[0014] 2. This utility model uses a hydraulic cylinder to drive a sliding rod and an extrusion plate to descend. After the extrusion plate descends and contacts the PET preform, it extrudes the PET preform to perform pressure resistance testing. A pressure sensor detects the pressure on the PET preform, and a camera records video footage of the PET preform being extruded, thereby improving the safety of observation. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the PET preform compression resistance testing equipment of this utility model;

[0016] Figure 2 This is a first cross-sectional three-dimensional structural diagram of the testing box;

[0017] Figure 3 This is a side view of the three-dimensional structure of the measuring plate;

[0018] Figure 4 This is a side view of the three-dimensional structure of the partition.

[0019] Figure 5 This is a second sectional three-dimensional structural diagram of the testing box;

[0020] Figure 6 This is a schematic diagram of the third sectional three-dimensional structure of the testing box;

[0021] Figure 7 This is a schematic diagram of the fourth cross-sectional three-dimensional structure of the testing box.

[0022] In the diagram, 1-detection box, 2-controller, 3-partition, 4-load-bearing plate, 5-camera, 6-transport and fixing mechanism, 61-first electric push rod, 62-first connecting rod, 63-measuring plate, 64-sliding rod, 65-pressure sensor, 66-second electric push rod, 67-second connecting rod, 68-clamping device, 7-compression mechanism, 71-hydraulic cylinder, 72-sliding rod, 73-compression plate, 8-environmental measurement mechanism, 81-temperature sensor, 82-humidity sensor, 83-heating tube, 84-fixed frame, 85-vacuum pump, 86-first air pipe, 87-second air pipe, 9-sealing mechanism, 91-reinforcing frame, 92-third electric push rod, 93-third connecting rod, 94-sealing plate. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0024] like Figures 1 to 7The PET preform compression resistance testing equipment of this utility model includes a testing box 1, a controller 2 installed on the testing box 1, a partition 3 fixedly connected inside the testing box 1, a load-bearing plate 4 fixedly connected inside the testing box 1, a camera 5 installed inside the testing box 1, the camera 5 being used to record the PET preform compression resistance testing process, a conveying and fixing mechanism 6 provided between the testing box 1 and the partition 3, a squeezing mechanism 7 provided between the testing box 1 and the partition 3, and an environmental measurement mechanism 8 provided on the testing box 1.

[0025] The controller 2 is equipped with a display screen.

[0026] The conveying and fixing mechanism 6 includes a first electric push rod 61, a first connecting rod 62, a measuring plate 63, a sliding rod 64, a pressure sensor 65, a second electric push rod 66, a second connecting rod 67, and a clamp 68. The first electric push rod 61 is fixedly installed on the detection box 1. The first electric push rod 61 is connected to the telescopic rod of the first electric push rod 61, and the first connecting rod 62 is connected to the measuring plate 63. The measuring plate 63 has multiple sliding grooves and recesses. The measuring plate 63 is used to support PET preforms. Two sliding rods 64 are fixedly connected to the measuring plate 63 and are slidably connected to the detection box 1. The pressure sensor 65 is installed on the measuring plate 63 and is used to detect the pressure on the PET preforms. Two second electric push rods 66 are fixedly installed on the partition plate 63. The second electric push rods 66 are connected to the telescopic rods of the second electric push rods 66, and the second connecting rods 67 are connected to the clamp 68, which is used to fix the PET preforms.

[0027] The extrusion mechanism 7 includes a hydraulic cylinder 71, a sliding rod 72, and an extrusion plate 73. The hydraulic cylinder 71 is fixedly installed on the test box 1. The sliding rod 72 is connected to the telescopic rod of the hydraulic cylinder 71. The sliding rod 72 is slidably connected to the partition 3. The extrusion plate 73 is fixedly connected to the sliding rod 72. The extrusion plate 73 is used to perform compression testing on the PET preform.

[0028] The environmental measurement mechanism 8 includes a temperature sensor 81, a humidity sensor 82, a heating element 83, a mounting bracket 84, an air extractor 85, a first air pipe 86, and a second air pipe 87. The temperature sensor 81 is installed inside the detection chamber 1 to measure the temperature inside the detection chamber 1. The humidity sensor 82 is installed inside the detection chamber 1 to measure the humidity inside the detection chamber 1. Multiple heating elements 83 are installed inside the detection chamber 1 to heat the air inside the detection chamber 1. Two mounting brackets 84 are fixedly connected to the detection chamber 1. An air extractor 85 is fixedly installed on the mounting brackets 84. The first air pipe 86 connects the air extractor 85 to the detection chamber 1, and the second air pipe 87 is connected to the air extractor 85.

[0029] The testing box 1 is equipped with a sealing mechanism 9, which includes a reinforcing frame 91, a third electric push rod 92, a third connecting rod 93, and a sealing plate 94. Two reinforcing frames 91 are fixedly connected to the testing box 1. A third electric push rod 92 is fixedly installed on the reinforcing frame 91. A third connecting rod 93 is connected to the telescopic rod of the third electric push rod 92. A sealing plate 94 is connected to the third connecting rod 93. The sealing plate 94 is slidably connected to the testing box 1.

[0030] The clamp 68 is provided with a heat-insulating coating.

[0031] The working principle of this utility model is as follows: After the PET preform is placed in the groove of the measuring plate, the first electric push rod drives the first connecting rod, the measuring plate and the sliding rod to move, so that the measuring plate and the PET preform enter the interior of the detection box. The third electric push rod drives the third connecting rod and the sealing plate to descend, so that the sealing plate closes the detection box.

[0032] A humidity sensor detects the humidity inside the testing chamber, and the data is displayed on the screen. When the humidity is too high, the heating element heats the air inside the chamber to reduce the humidity. An air extractor draws air out of the chamber through the first and second air pipes to maintain pressure balance. When the temperature inside the chamber reaches the preset threshold of the temperature sensor, the heating element is controlled to output heat evenly, creating a suitable environment for PET preform testing and preventing humidity from affecting the test data. Then, the second electric push rod lowers the second connecting rod and clamp to fix the PET preform. Next, the hydraulic cylinder lowers the sliding rod and extrusion plate. Once the extrusion plate contacts the PET preform, it compresses it to perform a pressure test. A pressure sensor detects the pressure on the PET preform, and a camera records video footage of the PET preform being compressed.

[0033] After the PET preform pressure test is completed, the heating tube and the vacuum pump stop working. The hydraulic cylinder drives the sliding rod and the extrusion plate to rise. The second electric push rod drives the second connecting rod and the clamp to rise to the reset position. The third electric push rod drives the third connecting rod and the sealing plate to rise, so that the sealing plate opens the test chamber. Then, the first electric push rod drives the first connecting rod, the measuring plate and the sliding rod to move in the opposite direction, so that the measuring plate and the PET preform are separated from the inside of the test chamber.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A PET bottle preform crush resistance testing apparatus, characterized by: The PET preform compression resistance testing equipment includes a testing chamber, a controller installed on the testing chamber, a partition fixedly connected inside the testing chamber, a load-bearing plate fixedly connected inside the testing chamber, a camera installed inside the testing chamber, a conveying and fixing mechanism between the testing chamber and the partition, a squeezing mechanism between the testing chamber and the partition, and an environmental measurement mechanism on the testing chamber.

2. The PET preform crush performance testing apparatus of claim 1, wherein: The controller is equipped with a display screen.

3. The PET preform crush performance testing apparatus of claim 1, wherein: The transport and fixing mechanism includes a first electric push rod, a first connecting rod, a measuring plate, a sliding rod, a pressure sensor, a second electric push rod, a second connecting rod, and a clamp. The first electric push rod is fixedly installed on the testing box. The first electric push rod is connected to the first connecting rod via its telescopic rod. The first connecting rod is connected to the measuring plate. The measuring plate has multiple sliding grooves and recesses. Two sliding rods are fixedly connected to the measuring plate and are slidably connected to the testing box. A pressure sensor is installed on the measuring plate. Two second electric push rods are fixedly installed on the partition. The second electric push rods are connected to the second connecting rod via their telescopic rods. The second connecting rods are connected to the clamps.

4. The PET preform crush performance testing apparatus of claim 1, wherein: The extrusion mechanism includes a hydraulic cylinder, a sliding rod, and an extrusion plate. The hydraulic cylinder is fixedly installed on the test box. The sliding rod is connected to the extension rod of the hydraulic cylinder. The sliding rod is slidably connected to the partition plate. The extrusion plate is fixedly connected to the sliding rod.

5. The PET preform crush performance testing apparatus of claim 1, wherein: The environmental measurement mechanism includes a temperature sensor, a humidity sensor, heating elements, a mounting bracket, an air extractor, a first air pipe, and a second air pipe. The temperature sensor and humidity sensor are installed inside the testing chamber, and multiple heating elements are installed inside the testing chamber. Two mounting brackets are fixedly connected to the testing chamber, and an air extractor is fixedly installed on the mounting brackets. The first air pipe connects the air extractor to the testing chamber, and the second air pipe is connected to the air extractor.

6. The PET preform crush performance testing apparatus of claim 1, wherein: The testing box is equipped with a sealing mechanism, which includes a reinforcing frame, a third electric push rod, a third connecting rod, and a sealing plate. Two reinforcing frames are fixedly connected to the testing box, and a third electric push rod is fixedly installed on the reinforcing frame. A third connecting rod is connected to the telescopic rod of the third electric push rod, and a sealing plate is connected to the third connecting rod. The sealing plate is slidably connected to the testing box.

7. The PET preform crush performance testing apparatus of claim 3, wherein: The clamp is equipped with a heat-insulating coating.

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