Plastic packaging box compression resistance detection device

Abstract

The utility model relates to the field of plastic packaging box detection, and discloses a plastic packaging box compression resistance detection device which comprises racks, a lifting seat is installed between the two racks in an up-down moving mode through a movable lifting module, and lengthening plates are symmetrically arranged on the left side and the right side of the lower portion of the lifting seat. Sliding rods are slidably mounted at the front end and the rear end of the lengthened plate, the upper end surface of a pressing plate is fixed to the bottom ends of the sliding rods through screws, and the center of the upper end surface of the pressing plate makes contact with the contact end of a pressure sensor; the pressure sensor is hung on the lifting seat through the adjusting screw rod and the mounting plate, the pressure sensor is hung on the lifting seat through the mounting plate and the adjusting screw rod, the height position of the pressure sensor can be adjusted, then it can be guaranteed that the pressure sensor makes contact with the abutting plate, but the pressure between the pressure sensor and the abutting plate is zero, and the abutting plate abuts against a plastic bag.

Description

Technical Field

[0001] The utility model relates to the field of plastic packaging box detection, in particular to a plastic packaging box compression detection device. Background Art

[0002] Plastic packaging boxes are usually made of plastic integrated injection molding, which are widely used in food packaging and other fields. In order to ensure that they will not be damaged when squeezed, they usually need to be subjected to compression tests. Usually, a carton compression tester is used for the test. The carton compression tester mainly includes a lifting seat that can be lifted and lowered, and a pressure sensor installed under the lifting seat. The lower end of the pressure sensor will also contact a pressure plate. When the pressure plate contacts the plastic packaging box, the pressure plate will give a force to the pressure sensor, and then the pressure value applied can be detected by the pressure sensor. Since the pressure plate is suspended under the lifting seat through a guide rod and a spring, the guide rod is slidably sleeved above the lifting seat, and its bottom end is fixed to the pressure plate. The spring is compressed between the guide rod and the lifting seat to suspend the pressure plate. The elastic force of the spring will decrease in the later period of long-term use. At this time, the pressure plate will not contact the pressure sensor. When the lifting seat moves down, the pressure plate will first contact the plastic packaging box. Since the pressure plate itself has gravity, the pressure sensor will contact the pressure plate again to cause pressure on the plastic packaging box and detect it. At this time, the value will be greater than the original value, resulting in inaccurate testing. Therefore, we designed a device for testing the compression resistance of plastic packaging boxes. Utility Model Content

[0003] In order to solve the technical problem that the elastic force of the spring decreases after long-term use, and the pressure plate does not contact the pressure sensor, resulting in inaccurate detection, the utility model provides a plastic packaging box compression detection device.

[0004] The utility model is implemented by the following technical scheme: a plastic packaging box pressure resistance detection device, including a frame, a lifting seat is installed between two frames by moving the lifting module up and down, and an extension plate is symmetrically arranged on the left and right sides below the lifting seat, and sliding rods are slidably installed at the front and rear ends of the extension plate, and the upper end surface of the pressure plate is fixed with the bottom end of the sliding rod by screws, and the center of the upper end surface of the pressure plate contacts the contact end of the pressure sensor, and the pressure sensor is suspended on the lifting seat by adjusting the screw and the mounting plate.

[0005] As a further improvement of the above scheme, a plurality of circular holes arranged in parallel are provided on the lifting seat, and an adjusting screw is passed through the middle circular hole, and an adjusting nut 1 and an adjusting nut 2 are threadedly connected to the upper and lower sides of the adjusting screw in sequence. By changing the positions of the adjusting nut 1 and the adjusting nut 2 on the adjusting screw, the height between the contact end of the pressure sensor and the pressure plate can be changed, so that the pressure sensor can always be in contact with the pressure plate as needed, which is convenient for subsequent pressure resistance detection.

[0006] As a further improvement of the above scheme, a positioning screw is slidably sleeved in the circular holes on the left and right sides of the adjusting screw, and the positioning screw is threadedly connected with fixing nuts on the upper and lower sides of the lifting seat. When changing the position of the adjusting screw, it is first necessary to loosen the fixing nut on the positioning screw and move it away from the lifting seat, and then the adjusting nut can be rotated. The positioning screw can position and guide it, which can ensure the stability of the pressure sensor after installation.

[0007] As a further improvement of the above scheme, the upper end thread of the sliding rod is formed with a threaded section, and the threaded section is threadedly connected with a connecting nut, and a spring is pressed between the gasket and the extension plate below the connecting nut. By changing the position of the connecting nut on the threaded section, the compression degree of the spring can be changed, thereby ensuring that the pressure plate below is designed to be parallel to the placement plate as needed, which is convenient for subsequent pressure resistance testing.

[0008] As a further improvement of the above scheme, a placement plate is arranged between the two frames, and a longitudinal groove and a transverse groove are respectively opened in the middle of the upper part of the placement plate toward the left and toward the rear, and bolts are slidably arranged in the longitudinal groove and the transverse groove, and abutment plates are sleeved on the bolts and fixed by nuts. After the plastic packaging box is placed on the placement plate, its two side surfaces are in contact with the two abutment plates, which can ensure that it is in the middle below the abutment plate, and when pressing down, there will be no displacement or dislocation of pressure, so that the pressure is evenly distributed on the plastic packaging box.

[0009] As a further improvement of the above scheme, the cross-sections of the longitudinal groove and the transverse groove are both convex-shaped structures, and the longitudinal groove and the transverse groove are connected to each other toward the inside, so that the bolts can be placed in the longitudinal groove and the transverse groove and are easy to remove;

[0010] The longitudinal groove and the transverse groove are both provided with scales, and the position of the abutment plate can be adjusted according to the size of the plastic packaging box, so that the plastic packaging box is located in the middle below the abutment plate.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. The utility model sets the pressure sensor on the lifting seat through the mounting plate and the adjusting screw rod. The height position of the pressure sensor can be adjusted, so as to ensure that the pressure sensor is in contact with the pressure plate but the pressure between the two is zero. After the pressure plate squeezes the plastic packaging box, it can immediately give feedback to the pressure sensor, thereby improving the detection accuracy;

[0013] 2. By arranging two adjustable abutment plates above the placement plate, it is ensured that the plastic packaging box can be in the middle position below the abutment plate, so that the plastic packaging box is evenly stressed and the compression test is more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of a plastic packaging box compression testing device provided by the utility model;

[0015] Figure 2 for Figure 1 The left and right isometric drawings;

[0016] Figure 3 for Figure 1 Bottom schematic diagram of ;

[0017] Figure 4 for Figure 3 Enlarged schematic diagram at point A in the middle.

[0018] Description of main symbols:

[0019] 1. Rack; 2. Placement plate; 21. Longitudinal groove; 22. Scale; 23. Abutment plate; 24. Horizontal groove; 3. Lifting seat; 4. Pressure plate; 5. Pressure sensor; 51. Mounting plate; 6. Extension plate; 7. Sliding rod; 71. Spring; 72. Connecting nut; 8. Adjusting screw; 81. Adjusting nut one; 82. Adjusting nut two; 9. Positioning screw. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0021] Example:

[0022] Please combine Figure 1-Figure 4A plastic packaging box compression detection device of this embodiment includes a frame 1, a lifting seat 3 is installed between two frames 1 by moving the lifting module up and down, and an extension plate 6 is symmetrically arranged on the left and right sides below the lifting seat 3. Sliding rods 7 are slidably installed at the front and rear ends of the extension plate 6, and the upper end surface of the pressure plate 4 is fixed to the bottom end of the sliding rod 7 by screws, and the center of the upper end surface of the pressure plate 4 contacts the contact end of the pressure sensor 5, and the pressure sensor 5 is suspended on the lifting seat 3 through the adjusting screw 8 and the mounting plate 51.

[0023] The lifting seat 3 is provided with a plurality of circular holes arranged in parallel, and an adjusting screw 8 is passed through the middle circular hole. The upper and lower sides of the adjusting screw 8 are threadedly connected with adjusting nuts 1 81 and 82 in sequence. By changing the positions of the adjusting nuts 1 81 and 82 on the adjusting screw 8, the height between the contact end of the pressure sensor 5 and the pressure plate 4 can be changed, so that the pressure sensor 5 can always be in contact with the pressure plate 4 as needed, which is convenient for subsequent pressure resistance detection.

[0024] A positioning screw 9 is slidably sleeved in the circular holes on the left and right sides of the adjusting screw 8. The positioning screw 9 is threadedly connected with fixing nuts on the upper and lower sides of the lifting seat 3. When changing the position of the adjusting screw 8, it is first necessary to loosen the fixing nut on the positioning screw 9 and move it away from the lifting seat 3, and then the adjusting nut 81 can be rotated. The positioning screw 9 can position and guide it, which can ensure the stability of the pressure sensor 5 after installation.

[0025] The upper end of the sliding rod 7 is threadedly arranged to form a threaded section, and a connecting nut 72 is threadedly connected to the threaded section. A spring 71 is pressed between the gasket and the extension plate 6 below the connecting nut 72. By changing the position of the connecting nut 72 on the threaded section, the compression degree of the spring 71 can be changed, thereby ensuring that the pressure plate 4 below is designed to be parallel to the placement plate 2 as needed, which is convenient for subsequent pressure resistance testing.

[0026] A placement plate 2 is arranged between the two frames 1, and a longitudinal groove 21 and a transverse groove 24 are respectively opened in the middle of the upper part of the placement plate 2 toward the left and toward the rear, and bolts are slidably arranged in the longitudinal groove 21 and the transverse groove 24, and abutment plates 23 are sleeved on the bolts and fixed by nuts. After the plastic packaging box is placed on the placement plate 2, its two side surfaces are in contact with the two abutment plates 23, which can ensure that it is in the middle below the abutment plate 4, and the pressure will not be offset or misaligned when pressing down, so that the pressure is evenly distributed on the plastic packaging box.

[0027] The cross-sections of the longitudinal groove 21 and the transverse groove 24 are both convex-shaped structures, and the longitudinal groove 21 and the transverse groove 24 are connected to each other toward the inner side, so that the bolts can be placed in the longitudinal groove 21 and the transverse groove 24 and can be easily removed;

[0028] Scales 22 are provided on both the longitudinal groove 21 and the transverse groove 24 , so that the position of the abutting plate 23 can be adjusted according to the size of the plastic packaging box, thereby making the plastic packaging box located in the middle below the abutting plate 4 .

[0029] The implementation principle of a pressure resistance detection device for a plastic packaging box in the embodiment of the present application is as follows: in actual use, since the length and width of the entire pressure plate 4 are relatively large, when the size of the plastic packaging box is small and it is far away from the middle below the pressure plate 4 (that is, when the plastic packaging box is close to the outermost side of the pressure plate 4), the force exerted by the pressure plate 4 on the plastic packaging box is concentrated at the front contact position, and the overall force is uneven. At this time, the pressure exerted by the pressure plate 4 on the plastic packaging box may be smaller than the normal value. The positions of the two abutment plates 23 are adjusted according to the actual length and width of the plastic packaging box, so that the distances between the two abutment plates 23 and the center are respectively half of the length and width of the plastic packaging box, and the plastic packaging box is attached to the abutment plates 23. At this time, the plastic packaging box is directly below the pressure plate 4, so that the force is uniform, and then the abutment plates 23 are placed against the plastic packaging box (the abutment plates 23 will not support the plastic packaging box, so that the pressure resistance detection is more accurate);

[0030] When the spring 71 becomes loose after long-term use and the entire pressure plate 4 is not in contact with the pressure sensor 5, we screw the connecting nut 72 to allow a certain elastic force between the spring 71 and the extension plate 6, and make the pressure plate 4 in a horizontal state, then loosen the fixing nuts on the two positioning screws 9 and keep them away from the lifting seat 3, and then use a wrench to turn the adjusting nut 1 81, so that the pressure sensor 5 is lowered as a whole and contacts with the top of the pressure plate 4 (and the value detected by the pressure sensor 5 is 0), and then tighten the adjusting nut 2 82 and the fixing nut to contact the lifting seat 3;

[0031] The pressure sensor 5 is suspended on the lifting seat 3 through the mounting plate 51 and the adjusting screw 8. The height position of the pressure sensor 5 can be adjusted, so as to ensure that the pressure sensor 5 is in contact with the pressing plate 4 but the pressure between the two is zero. After the pressing plate 4 squeezes the plastic packaging box, it can immediately give feedback to the pressure sensor 5, thereby improving the accuracy of detection;

[0032] By arranging two adjustable abutment plates 23 above the placement plate 2, it is ensured that the plastic packaging box can be located in the middle position below the pressure plate 4, so that the plastic packaging box is evenly stressed and the compression resistance test is more accurate.

[0033] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A plastic packaging box compression testing device, comprising a frame (1), characterized in that: The lifting seat (3) is installed between the two frames (1) by moving the lifting module up and down. Extension plates (6) are symmetrically arranged on the left and right sides below the lifting seat (3). Sliding rods (7) are slidably installed at the front and rear ends of the extension plates (6). The upper end surface of the pressure plate (4) is screwed to the bottom end of the sliding rod (7). The center of the upper end surface of the pressure plate (4) contacts the contact end of the pressure sensor (5), and the pressure sensor (5) is suspended on the lifting seat (3) through an adjusting screw (8) and a mounting plate (51).

2. A plastic packaging box compression testing device as claimed in claim 1, characterized in that: The lifting seat (3) is provided with a plurality of circular holes arranged in parallel, and an adjusting screw (8) is passed through the middle circular hole, and an adjusting nut 1 (81) and an adjusting nut 2 (82) are threadedly connected to the upper and lower sides of the adjusting screw (8) in sequence.

3. A plastic packaging box compression testing device as claimed in claim 2, characterized in that: A positioning screw (9) is slidably sleeved in the circular holes on the left and right sides of the adjusting screw (8), and the positioning screw (9) is threadedly connected with fixing nuts on the upper and lower sides of the lifting seat (3).

4. A plastic packaging box compression testing device as claimed in claim 1, characterized in that: The upper end of the sliding rod (7) is threadedly provided with a threaded section, and a connecting nut (72) is threadedly connected to the threaded section. A spring (71) is pressed between a gasket and the extension plate (6) below the connecting nut (72).

5. A plastic packaging box compression testing device as claimed in claim 1, characterized in that: A placement plate (2) is arranged between the two frames (1) below, and a longitudinal groove (21) and a transverse groove (24) are respectively provided in the middle of the upper part of the placement plate (2) toward the left and toward the rear, wherein bolts are slidably arranged in the longitudinal groove (21) and the transverse groove (24), and an abutment plate (23) is sleeved on the bolts and fixed by nuts.

6. A plastic packaging box compression testing device as claimed in claim 5, characterized in that: The cross-sections of the longitudinal groove (21) and the transverse groove (24) are both convex-shaped structures, and the longitudinal groove (21) and the transverse groove (24) are connected inwardly; The longitudinal groove (21) and the transverse groove (24) are both provided with scales (22).

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