Tension strength testing machine for plastic packaging bag

Abstract

The utility model discloses a plastic packaging bag tension strength testing machine which comprises a supporting base, a fixed supporting frame is arranged at one transverse end of the upper portion of the supporting base, a control device is arranged at the other transverse end of the upper portion of the supporting base, a transmission lead screw is arranged between the inner surface of the top of the fixed supporting frame and the top of the supporting base, and a driving motor is arranged at the top of the fixed supporting frame. The output end of the driving motor is connected with one end of the transmission lead screw. The beneficial effects of the utility model are that the device is reasonable in design, is simple and stable in structure, and is high in practicality; the tensile strength borne by the plastic package in the tensile test process can be monitored in real time so as to improve the accuracy of a test result, meanwhile, the stability of the structure of the transmission lead screw can be guaranteed through the arranged second ball nut seat when the tensile stroke is large, the phenomenon that the transmission lead screw is bent easily is avoided, the stability of the structure is guaranteed, and the service life of the transmission lead screw is prolonged. The service life is prolonged, the safety is improved, the accuracy of a test result is further improved, and the device is suitable for popularization and application.

Description

TECHNICAL FIELD

[0001] The utility model relates to plastic packaging bag test technical field, concretely is a plastic packaging bag tensile strength testing machine. BACKGROUND

[0002] Plastic packaging bag is a kind of plastic as raw material, for the packaging bag of various articles in production and life, widely used in daily life and industrial production, commonly used plastic packaging bag is made of polyethylene film, the film is nontoxic, so it can be used for containing food, to ensure the quality of plastic packaging bag, when plastic packaging bag production, it needs to carry out tensile strength test.

[0003] The device for testing the tensile strength of plastic packaging bags in the prior art is not only not accurate in test result, but also cannot monitor the tensile force of the plastic packaging bag in real time during the test, and is not convenient for use in testing plastic packaging bags with large stretching stroke, and needs to be further developed and improved. UTILITY MODEL CONTENT

[0004] The utility model discloses a plastic packaging bag tensile strength testing machine to solve the problem of the device for testing the tensile strength of plastic packaging bags in the prior art, which is not accurate in test result, cannot monitor the tensile force of the plastic packaging bag in real time, and is not convenient for use in testing plastic packaging bags with large stretching stroke.

[0005] The utility model discloses a plastic packaging bag tensile strength testing machine, including support base, the support base upper portion transverse one end is provided with fixed support frame, and the other end is provided with control device, the fixed support frame top inner surface with the support base top between being provided with transmission screw rod, the fixed support frame top is provided with drive motor, the drive motor output and transmission screw rod one end are connected, transmission screw rod is located in the fixed support frame inside installation first ball nut seat, the first ball nut seat upper and lower transmission screw rod is all installed with second ball nut seat, the first ball nut seat with second ball nut seat transverse both sides respectively with the fixed support frame transverse both sides inner surface between along vertical direction is slidably connected, the first ball nut seat longitudinal one side outer surface is provided with upper fixed connecting piece, the support base top is provided with lower fixed connecting piece with the upper fixed connecting piece position.

[0006] Further, the top and bottom of the transmission screw rod are respectively provided with first rotary bearing and second rotary bearing, the first rotary bearing is connected with the fixed support frame, and the second rotary bearing is connected with the support base.

[0007] Furthermore, the upper fixed connecting member includes a lifting support mounting plate. One longitudinal end of the lifting support mounting plate is connected to one longitudinal side surface of the first ball nut seat. A pressure sensor is provided on the top of the lifting support mounting plate. Support plug rods are inserted and installed on both longitudinal sides of the lifting support mounting plate at the pressure sensor. A limit plate is provided above the pressure sensor. A support connecting plate is provided below the lifting support mounting plate. The top end of each support plug rod is connected to the bottom of the limit plate, and the bottom end is connected to the top of the support connecting plate. A fixed mounting plate is provided at the bottom of the support connecting plate. A first fixed clamping plate is provided on one longitudinal side of the fixed mounting plate. A first movable clamping plate is provided on the side of the first fixed clamping plate that is longitudinally away from the fixed mounting plate. First fixed limit bolts are inserted and installed at both ends of the first movable clamping plate. One end of the first fixed limit bolt passes through the first movable clamping plate and is threadedly connected to the first fixed clamping plate.

[0008] Furthermore, the lower fixed connector includes a fixed support plate, a second fixed clamping plate is provided on the top of the fixed support plate, a second movable clamping plate is provided on one longitudinal side of the second fixed clamping plate, and a second fixed limiting bolt is inserted and installed at both ends of the second movable clamping plate. One end of the second fixed limiting bolt passes through the second movable clamping plate and is threadedly connected to the second fixed clamping plate.

[0009] Furthermore, the lifting support mounting plate is provided with a straight bushing corresponding to the position of the support plug rod.

[0010] Furthermore, both the drive motor and the pressure sensor are electrically connected to the control device.

[0011] Compared with the prior art, the beneficial effects of this utility model are: the utility model has a reasonable design, simple and stable structure, and strong practicality; it can not only monitor the tensile strength of plastic packaging during tensile testing in real time to improve the accuracy of test results, but also ensure the stability of the transmission screw structure itself by setting a second ball nut seat when the tensile stroke is large, avoiding the bending phenomenon, ensuring its own structural stability, improving service life and safety, and further improving the accuracy of test results, making it suitable for widespread use. Attached Figure Description

[0012] Fig. 1 This is a three-dimensional structural diagram of the present invention;

[0013] Fig. 2 This is a three-dimensional structural schematic diagram of the present invention from another perspective;

[0014] Fig. 3 This is a structural schematic diagram of the upper fixed connector in this utility model;

[0015] Fig. 4 This is a structural schematic diagram of the lower fixed connector in this utility model.

[0016] In the figure: 1-support base, 2-fixed support frame, 3-control device, 4-transmission screw, 5-drive motor, 6-first ball nut seat, 7-second ball nut seat, 8-upper fixed connector, 9-lower fixed connector;

[0017] 801-Lifting support mounting plate, 802-Pressure sensor, 803-Support plug rod, 804-Limiting pressure plate, 805-Support connecting plate, 806-Fixed mounting plate, 807-First fixed clamping plate, 808-First movable clamping plate, 809-First fixed limiting bolt;

[0018] 901-Fixed support plate, 902-Second fixed clamping plate, 903-Second movable clamping plate, 904-Second fixed limit bolt. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] Combination Figs. 1 to 4The illustrated plastic packaging bag tensile strength testing machine includes a support base 1. A fixed support frame 2 is provided at one end of the upper horizontal part of the support base 1, and a control device 3 is provided at the other end. A transmission screw 4 is provided between the inner surface of the top of the fixed support frame 2 and the top of the support base 1. A drive motor 5 is provided at the top of the fixed support frame 2. The output end of the drive motor 5 is connected to one end of the transmission screw 4. A first ball nut seat 6 is installed on the inner side of the transmission screw 4 located on the fixed support frame 2. A second ball nut seat 7 is installed on the transmission screw 4 above and below the first ball nut seat 6. The first ball nut seat 6 and the second ball nut seat 7 are slidably connected to the inner surfaces of the two sides of the fixed support frame 2 in the vertical direction on their respective horizontal sides. An upper fixed connector 8 is provided on the outer surface of the longitudinal side of the first ball nut seat 6. A lower fixed connector 9 is provided on the top of the support base 1 corresponding to the position of the upper fixed connector 8.

[0022] The upper fixed connector 8 includes a lifting support mounting plate 801. One longitudinal end of the lifting support mounting plate 801 is connected to one longitudinal side surface of the first ball nut seat 6. A pressure sensor 802 is provided on the top of the lifting support mounting plate 801. Support plug rods 803 are inserted and installed on both longitudinal sides of the lifting support mounting plate 801 and the pressure sensor 802. A limit plate 804 is provided above the pressure sensor 802. A support connecting plate 805 is provided below the lifting support mounting plate 801. The top end of each support plug rod 803 is connected to the bottom of the limit plate 804, and the bottom end of each support connecting rod is connected to the top of the support connecting plate 805. The bottom of the support connecting plate 805 is provided with a fixed mounting plate 806. A first fixed clamping plate 807 is provided on one longitudinal side of the fixed mounting plate 806. A first movable clamping plate 808 is provided on the longitudinal side of the first fixed clamping plate 807 away from the fixed mounting plate 806. A first fixed limiting bolt 809 is inserted and installed at both ends of the first movable clamping plate 808. One end of the first fixed limiting bolt 809 passes through the first movable clamping plate 808 and is threadedly connected to the first fixed clamping plate 807, so as to fix and clamp one end of the plastic packaging bag, and at the same time, the tensile strength of the plastic packaging bag can be monitored in real time during the test.

[0023] The lower fixed connector 9 includes a fixed support plate 901. A second fixed clamping plate 902 is provided on the top of the fixed support plate 901. A second movable clamping plate 903 is provided on one longitudinal side of the second fixed clamping plate 902. A second fixed limiting bolt 904 is inserted and installed at both ends of the second movable clamping plate 903. One end of the second fixed limiting bolt 904 passes through the second movable clamping plate 903 and is threadedly connected to the second fixed clamping plate 902 to fix and clamp the other end of the plastic packaging bag.

[0024] The top and bottom ends of the transmission screw 4 are respectively provided with a first rotary bearing and a second rotary bearing. The first rotary bearing is connected to the fixed support frame 2, and the second rotary bearing is connected to the support base 1 to ensure smooth rotation of the transmission screw 4. The lifting support mounting plate 801 is provided with a linear bushing corresponding to the position of the support plug rod 803 to ensure smooth lifting of the support plug rod 803. The drive motor 5 and the pressure sensor 802 are both electrically connected to the control device 3 to control the working state of the drive motor 5 and to receive the signal transmitted in real time by the pressure sensor 802.

[0025] In use, one end of the plastic bag is fixedly clamped between the second fixed clamping plate and the second movable clamping plate using the second fixed limiting bolt. Then, the other end of the plastic bag is fixedly clamped between the first fixed clamping plate and the first movable clamping plate using the first fixed limiting bolt. Next, the drive motor can be controlled to rotate the transmission screw, causing the first ball nut seat to move the upper fixed connecting piece upward, thus applying tension to the plastic bag. The tension borne by the plastic bag is then reversed by the limiting pressure plate through the cooperation of the fixed mounting plate, the support connecting plate, and the support plug rod, and applied to the pressure sensor in the opposite direction. This allows for real-time monitoring of the tensile strength borne by the plastic bag, controlling the applied tension to improve the accuracy of the tensile strength test of the plastic bag.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0027] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A tensile strength testing machine for plastic packaging bags, comprising a supporting base (1), characterized in that: The upper transverse one end of the support base (1) is provided with a fixed support frame (2), and the other end is provided with a control device (3), the inner surface of the top of the fixed support frame (2) and the top of the support base (1) are provided with a transmission screw rod (4), the top of the fixed support frame (2) is provided with a driving motor (5), the output end of the driving motor (5) is connected with one end of the transmission screw rod (4), the first ball nut seat (6) is installed on the inner side of the fixed support frame (2), the second ball nut seat (7) is installed on the transmission screw rod (4) above and below the first ball nut seat (6), the first ball nut seat (6) and the second ball nut seat (7) are respectively connected with the inner surface of the two sides of the fixed support frame (2) in the vertical direction, the outer surface of the longitudinal one side of the first ball nut seat (6) is provided with an upper fixed connecting piece (8), and the top of the support base (1) is provided with a lower fixed connecting piece (9) corresponding to the position of the upper fixed connecting piece (8).

2. The tensile strength testing machine for plastic packaging bags according to claim 1, characterized in that The top and bottom of the transmission screw rod (4) are respectively provided with first and second rotary bearings, the first rotary bearing is connected with the fixed support frame (2), and the second rotary bearing is connected with the support base (1).

3. The tensile strength testing machine for plastic packaging bags according to claim 1, characterized in that The upper fixed connecting piece (8) comprises a lifting support mounting plate (801), one end of the lifting support mounting plate (801) is connected with the surface of the longitudinal one side of the first ball nut seat (6), the top of the lifting support mounting plate (801) is provided with a pressure sensor (802), the lifting support mounting plate (801) is provided with a support plug-in rod (803) inserted and mounted on the longitudinal two sides of the pressure sensor (802), a limiting pressing plate (804) is arranged above the pressure sensor (802), a support connecting plate (805) is arranged below the lifting support mounting plate (801), one end of the top of the support plug-in rod (803) is connected with the bottom of the limiting pressing plate (804), and the other end of the bottom is connected with the top of the support connecting plate (805), a fixed mounting plate (806) is arranged at the bottom of the support connecting plate (805), a first fixed clamping plate (807) is arranged on the longitudinal one side of the fixed mounting plate (806), a first movable clamping plate (808) is arranged on the side away from the fixed mounting plate (806) of the first fixed clamping plate (807), and first fixed limiting bolts (809) are inserted and mounted at both ends of the first movable clamping plate (808). One end of the first fixed limiting bolt (809) is threadedly connected with the first movable clamping plate (808) and the first fixed clamping plate (807).

4. The tensile strength testing machine for plastic packaging bags according to claim 1, characterized in that The lower fixed connecting piece (9) comprises a fixed support plate (901), the top of the fixed support plate (901) is provided with a second fixed clamping plate (902), the longitudinal side of the second fixed clamping plate (902) is provided with a second movable clamping plate (903), and the two ends of the second movable clamping plate (903) are both insertedly installed with a second fixed limiting bolt (904); one end of the second fixed limiting bolt (904) penetrates through the second movable clamping plate (903) and is in threaded connection with the second fixed clamping plate (902).

5. The tensile strength testing machine for plastic packaging bags according to claim 3, characterized in that The lifting support mounting plate (801) is provided with a straight lining bushing in position corresponding to the support inserted rod (803).

6. The tensile strength testing machine for plastic packaging bags according to claim 3, characterized in that The driving motor (5) and the pressure sensor (802) are both electrically connected with the control device (3).

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