Plastic packaging material tensile strength detection equipment

Abstract

The utility model discloses plastic packaging material tensile strength detection equipment which comprises a detection box body, an electric telescopic rod is fixedly installed on the top wall of the detection box body, an assembly plate is fixedly installed at the bottom end of the electric telescopic rod, and a tension detection device is fixedly installed at the bottom end of the assembly plate. According to the utility model, by arranging the knobs, the racks, the baffle plates, the fixed seats and the like, the knobs are rotated to drive the two racks to slide towards two sides, and then the two ends of a material are limited, so that the material is ensured to be located at the center of the fixed seats, and the detection accuracy is improved. The assembly plate is limited through the limiting columns, deviation of the assembly plate is avoided, then the two fixing bases are located on the same vertical line, the fixed materials are also located on the same vertical line, uneven stretching stress of the materials is avoided, and the purpose of guaranteeing the stretching detection precision is achieved.

Description

Technical Field

[0001] The utility model relates to the field of tensile strength detection, in particular to an equipment for detecting the tensile strength of plastic packaging materials. Background Art

[0002] Plastic packaging materials refer to plastic products used for packaging various products. It is very necessary to detect the strength of plastic packaging materials. First of all, it ensures that the packaging can withstand external forces during transportation and storage, protecting the contents from damage. For example, during handling, it should be able to resist extrusion and collision. Secondly, the detection can determine whether the material meets the quality standards, ensuring the reliability of product packaging. Moreover, it helps to optimize the production process and material selection, reducing costs.

[0003] When the existing plastic packaging materials are stretched, they are usually fixed by clamping devices at both ends, and then stretched. When the material is fixed on the clamping device, it is usually judged manually whether the two points clamped on the material are on the same vertical line. If the two clamping parts are not on the same vertical line, it will cause uneven stress during the stretching of the material, thereby making the measured tensile strength lower than the actual strength, thus affecting the accurate evaluation of the material properties. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the problems in the background art, and to provide an equipment for detecting the tensile strength of plastic packaging materials.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] An equipment for detecting the tensile strength of plastic packaging materials, including a detection box body. An electric telescopic rod is fixedly installed on the top wall of the detection box body. The bottom end of the electric telescopic rod is fixedly installed with an assembly plate. The bottom end of the assembly plate is fixedly installed with a tensile force detection device. Fixed seats are installed on the bottom surface of the tensile force detection device and the bottom wall of the detection box body respectively. Two clamping plates are symmetrically and slidably connected to each fixed seat. Each fixed seat drives the clamping plates to slide through a driving mechanism. Two baffles are slidably connected to both sides of the two clamping plates with corresponding positions. Gears are rotatably connected to the two clamping plates with corresponding positions. A rack is fixedly installed on each baffle side, and each rack is slidably connected to the inner wall of the corresponding clamping plate, and each rack is meshed with the corresponding gear.

[0007] Preferably, each driving mechanism includes a motor, and the motor is fixedly installed on the outside of the fixed seat. The output shaft of the motor penetrates the fixed seat and is connected with a double-headed screw rod, and each clamping plate is threadedly connected to the double-headed screw rod.

[0008] Preferably, two limiting grooves are symmetrically formed in each of the fixing seats, each limiting groove is square, the double-headed screw is rotatably connected in the correspondingly-positioned limiting grooves, and each clamping plate is slidably connected in the limiting groove.

[0009] Preferably, anti-slip grooves are formed on the outer sides of each of the clamping plates, a plurality of sliding seats are fixedly installed on the inner walls of the two correspondingly-positioned clamping plates, and each rack is slidably connected with the sliding seats.

[0010] Preferably, a revolving door is rotatably connected to the outer side of the detection box body, and a viewing window is formed in the revolving door.

[0011] Preferably, a plurality of limiting columns are symmetrically installed in the detection box body, and each limiting column is slidably connected with the assembly plate.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] By arranging devices such as a knob, a rack, a baffle, and a fixing seat, the present utility model realizes driving two racks to slide towards both sides by rotating the knob, then limiting the two ends of the material, thereby ensuring that the material is at the center of the fixing seat, and limiting the assembly plate by the limiting columns to prevent it from deviating, so that the two fixing seats are on the same vertical line, and thus the fixed materials are also on the same vertical line, avoiding uneven tensile stress, and thus achieving the purpose of ensuring the accuracy of tensile testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural view of a tensile strength testing device for plastic packaging materials proposed by the present utility model;

[0015] Figure 2 is a schematic cross-sectional structural view of a fixing seat of a tensile strength testing device for plastic packaging materials proposed by the present utility model;

[0016] Figure 3 is a schematic cross-sectional structural view of a clamping plate of a tensile strength testing device for plastic packaging materials proposed by the present utility model.

[0017] In the figure: 1 detection box body, 2 revolving door, 3 viewing window, 4 electric telescopic rod, 5 assembly plate, 6 limiting column, 7 tensile force detection device, 8 fixing seat, 9 motor, 10 double-headed screw, 11 limiting groove, 12 clamping plate, 13 anti-slip groove, 14 gear, 15 baffle, 16 rack, 17 sliding seat. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0019] Reference Figures 1-3 , a tensile strength testing device for plastic packaging materials, comprising a testing box body 1. A revolving door 2 is rotatably connected to the outside of the testing box body 1. A viewing window 3 is opened on the revolving door 2. The testing box body 1 can be closed through the revolving door 2 to prevent the plastic material from breaking and splashing during the stretching process, which may cause harm to personnel. At the same time, it is convenient to observe the inside of the testing box body 1 through the viewing window 3. An electric telescopic rod 4 is fixedly installed on the top wall of the testing box body 1. The bottom end of the electric telescopic rod 4 is fixedly installed with an assembly plate 5. A plurality of limiting columns 6 are symmetrically installed in the testing box body 1, and each limiting column 6 is slidably connected to the assembly plate 5. The assembly plate 5 can be limited by the plurality of limiting columns 6, and then the displacement of the assembly plate 5 can be guided to prevent it from being deflected and resulting in uneven tensile force. A tensile force detection device 7 is fixedly installed at the bottom end of the assembly plate 5. The tensile force detection device 7 is an existing mature mechanism and will not be elaborated here. Fixed seats 8 are installed on the bottom surface of the tensile force detection device 7 and the bottom wall of the testing box body 1. Two clamping plates 12 are symmetrically slidably connected to each fixed seat 8. Anti-slip grooves 13 are opened on the outside of each clamping plate 12. The anti-slip grooves 13 can reduce the stability of clamping during the stretching process;

[0020] Each fixed seat 8 drives the clamping plate 12 to slide through a driving mechanism. The driving mechanism includes a motor 9, and the motor 9 is fixedly installed on the outside of the fixed seat 8. The output shaft of the motor 9 penetrates the fixed seat 8 and is connected to a double-headed screw 10, and each clamping plate 12 is threadedly connected to the double-headed screw 10. Two limiting grooves 11 are symmetrically opened on each fixed seat 8, and each limiting groove 11 is square. The double-headed screw 10 is rotatably connected in the correspondingly positioned limiting groove 11, and each clamping plate 12 is slidably connected in the limiting groove 11. It should be noted that the clamping plate 12 is limited by the square limiting groove 11, so that it cannot rotate and can only perform linear movement. Both ends of each double-headed screw 10 are provided with threads in opposite directions, and the connection of the threads at both ends is located at the center of the double-headed screw 10. Thus, the two clamping plates 12 slide towards each other or away from each other;

[0021] On both sides of the two clamping plates 12 corresponding to the positions, baffles 15 are slidably connected. On the two clamping plates 12 corresponding to the positions, gears 14 are rotatably connected. On the side of each baffle 15, a rack 16 is fixedly installed, and each rack 16 is slidably connected to the inner wall of the corresponding clamping plate 12, and each rack 16 meshes with the corresponding gear 14. On the inner walls of the two clamping plates 12 corresponding to the positions, a plurality of sliding seats 17 are fixedly installed, and each rack 16 is slidably connected to the sliding seat 17. The sliding seat 17 supports and limits the rack 16 to prevent it from tilting during the sliding process. At the same time, by symmetrically sliding the two baffles 15, and then making both sides of the material contact the baffles 15, it can ensure that the material is located at the center, thereby facilitating uniform force application and making the detection result more accurate.

[0022] When the present utility model is in use, first open the revolving door 2, then place the material on the fixing seat 8 at the lower part of the detection box body 1, and then start the motor 9. Through the cooperation of the double-headed screw rod 10 and the clamping plate 12, drive the two clamping plates 12 to slide towards each other, thereby supporting the material. Then turn the gear 14. Due to the meshing of the gear 14 and the rack 16, drive the racks 16 on both sides to slide outwards. Then make one end of the material contact the baffle 15 installed on the outer side of the rack 16, and reversely rotate the gear 14 to drive the two baffles 15 to retract inwards, thereby aligning the material. When both ends of the material contact the inner sides of the baffles 15, stop the rotation of the gear 14. At this time, the material is located at the center of the fixing seat 8. Then start the motor 9 again to drive the two clamping plates 12 to slide, thereby clamping and fixing the lower end of the material;

[0023] Then start the electric telescopic rod 4 to drive the assembly plate 5 to move downwards. Since the bottom end of the material is located at the center of the fixing seat 8, and the assembly plate 5 is limited by a plurality of limiting columns 6 and cannot deviate, the upper end of the material can directly drive the clamping plate 12 to slide by starting the motor 9 arranged at the upper part of the detection box body 1, thereby clamping and fixing the upper end of the material. Then start the electric telescopic rod 4 again to drive the assembly plate 5 to slide upwards, thereby pulling the material, and its tensile strength is displayed by the tensile force detection device 7.

[0024] The above is only a preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent replacements or changes, and should be covered within the protection scope of the present utility model.

Claims

1. Tensile strength testing equipment for plastic packaging materials, including a testing box body (1), characterized in that: An electric telescopic rod (4) is fixedly installed on the top wall of the detection box body (1). The bottom end of the electric telescopic rod (4) is fixedly installed with an assembly plate (5). The bottom end of the assembly plate (5) is fixedly installed with a tensile force detection device (7). Fixed seats (8) are installed on the bottom surface of the tensile force detection device (7) and the bottom wall of the detection box body (1). Two clamping plates (12) are symmetrically and slidably connected to each fixed seat (8). Each fixed seat (8) drives the clamping plate (12) to slide through a driving mechanism. Two baffles (15) are slidably connected to both sides of the two clamping plates (12) with corresponding positions. Gears (14) are rotatably connected to the two clamping plates (12) with corresponding positions. A rack (16) is fixedly installed on the side surface of each baffle (15), and each rack (16) is slidably connected to the inner wall of the corresponding clamping plate (12), and each rack (16) meshes with the corresponding gear (14).

2. The tensile strength testing device for plastic packaging materials according to claim 1, wherein: Each of the driving mechanisms includes a motor (9), and the motor (9) is fixedly installed on the outside of the fixed seat (8). The output shaft of the motor (9) penetrates through the fixed seat (8) and is connected with a double-headed screw rod (10), and each clamping plate (12) is threadedly connected to the double-headed screw rod (10).

3. The tensile strength testing device for plastic packaging materials according to claim 2, wherein: Two limiting grooves (11) are symmetrically formed on each fixed seat (8), and each limiting groove (11) is square. The double-headed screw rod (10) is rotatably connected in the corresponding limiting groove (11), and each clamping plate (12) is slidably connected in the limiting groove (11).

4. The tensile strength testing device for plastic packaging materials according to claim 3, characterized in that: An anti-slip groove (13) is formed on the outside of each clamping plate (12). A plurality of sliding seats (17) are fixedly installed on the inner walls of the two clamping plates (12) with corresponding positions, and each rack (16) is slidably connected to the sliding seat (17).

5. The tensile strength testing device for plastic packaging materials according to claim 4, wherein: A revolving door (2) is rotatably connected to the outside of the detection box body (1), and a viewing window (3) is formed on the revolving door (2).

6. The tensile strength testing device for plastic packaging materials according to claim 5, wherein: A plurality of limiting columns (6) are symmetrically installed in the detection box body (1), and each limiting column (6) is slidably connected to the assembly plate (5).

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