Carton compressive strength testing machine

Abstract

The utility model belongs to the technical field of compressive strength testing machines, and discloses a carton compressive strength testing machine which comprises a rack mechanism and further comprises a downward pressing mechanism arranged in the middle of the rack mechanism and used for adjusting the inclination angle and applying non-uniform downward pressing force, and a placing mechanism used for bearing and clamping a carton is arranged below the downward pressing mechanism. The rack mechanism comprises a base, two stand columns are symmetrically arranged on the base, guide grooves are formed in the inner sides of the stand columns, a beam is installed on the tops of the stand columns, and a control panel is arranged in front of the stand columns. According to the carton compressive strength testing machine disclosed by the utility model, non-uniform pressure application is realized by adjusting local downward pressure, various use scenes and pressure conditions of a carton can be simulated, a measurement result is more accurate, the local downward pressure is changed by adjusting an inclination angle at four points, and the compressive strength of the carton is improved. A pressure applying mode can be freely selected according to whether the carton is uniformly pressed or not, and the carton is clamped and fixed at opposite angles, so that the measurement is more stable.

Description

Technical Field

[0001] The utility model belongs to the technical field of compression testing machines, in particular to a carton compression strength testing machine. Background Art

[0002] The compression testing machine for carton production is the most direct test instrument for testing the compressive strength of cartons or other packaging containers. It is used to determine the compressive capacity of cartons and can be used for sustained pressure stacking tests. The test results can be used as an important reference for the height of finished packaging boxes stacked in the factory or as an important basis for designing packaging boxes. It is suitable for compression tests on packaging containers and cartons, and can complete fixed pressure, deformation measurement, fixed deformation, and pressure resistance measurement; maximum crushing force and stacking tests, with high control accuracy, strong reliability, and long-term load holding function, with an error within ±0.5%.

[0003] In contrast, the Chinese patent with announcement number CN210863118U discloses a compression testing machine for carton production, including a base, a lifting column is respectively arranged on the left and right upper ends of the base, a placement plate is connected to the middle upper end of the base, two fixed plates are installed on the middle upper end of the placement plate, a connecting rod is commonly connected between the upper parts of the lifting columns, a lifting rod is movably installed between the middle parts of the lifting columns, a fixing rod is respectively fixedly connected to the left and right lower ends of the lifting rod, a connecting screw is respectively inserted and installed on the front and rear ends of the fixing rod, a fixing clamp is installed on the lower part of the connecting screw, and a pressure plate is installed between the fixing clamps.

[0004] However, the above patent applies uniform pressure when testing the compression resistance of cartons, and cannot adjust the local pressure on the cartons. When cartons are actually used and stacked, the pressure conditions are complex and do not always remain uniform. The measured results will have large deviations, so a new device must be designed. Utility Model Content

[0005] The purpose of the utility model is to provide a carton compression strength testing machine to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A carton compression strength testing machine comprises a frame mechanism and a pressing mechanism arranged in the middle of the frame mechanism for adjusting the tilt angle to apply non-uniform downward pressure, wherein a placing mechanism for supporting and clamping the carton is arranged below the pressing mechanism.

[0008] The pressing mechanism comprises two symmetrically arranged first hydraulic rods, a transmission plate is arranged at the bottom of the first hydraulic rods, four second hydraulic rods are symmetrically arranged at the bottom of the transmission plate, a pressing plate is arranged below the second hydraulic rods, four ball joint seats are symmetrically arranged on the top of the pressing plate, and a pressure sensor is installed at the bottom of the pressing plate;

[0009] The placing mechanism comprises a placing plate, four supporting legs are symmetrically arranged at the bottom of the placing plate, a forward and reverse threaded screw rod is installed in the middle of the placing plate, two clamping plates are symmetrically installed on the forward and reverse threaded screw rod, and a hand crank is arranged at one end of the forward and reverse threaded screw rod.

[0010] Furthermore, the frame mechanism includes a base, two columns are symmetrically arranged on the base, guide grooves are opened on the inner sides of the columns, cross beams are installed on the tops of the columns, and a control panel is arranged in front of the columns.

[0011] Furthermore: two ends of the column are respectively connected to the crossbeam and the base with bolts.

[0012] Furthermore: two ends of the first hydraulic rod are respectively connected with bolts on the bottom of the cross beam and the top of the transmission plate.

[0013] Furthermore: the second hydraulic rod is rotatably connected to the ball joint seat.

[0014] Furthermore: the placement plate is rectangular in shape, and the forward and reverse threaded screw rods are arranged diagonally along the placement plate.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. By adjusting the local downward pressure to achieve non-uniform pressure settings, various usage scenarios and pressure conditions of cartons can be simulated to make the measurement results more accurate;

[0017] 2. The local downward pressure setting can be changed by adjusting the tilt angle at four points, and the pressure mode can be freely selected according to whether the carton is evenly pressurized;

[0018] 3. Fix the carton by diagonal clamping to ensure more stability during measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a carton compression strength testing machine described in the utility model;

[0020] Figure 2 It is an axonometric diagram of the frame structure of a carton compression strength testing machine described in the utility model;

[0021] Figure 3 It is a structural schematic diagram of the pressing mechanism of a carton compression strength testing machine described in the utility model;

[0022] Figure 4 It is an axonometric diagram of a placement mechanism of a carton compression strength testing machine described in the utility model.

[0023] In the accompanying drawings, 101, base; 102, column; 103, guide groove; 104, crossbeam; 105, control panel; 201, first hydraulic rod; 202, transmission plate; 203, second hydraulic rod; 204, lower pressure plate; 205, ball joint seat; 206, pressure sensor; 301, placement plate; 302, support leg; 303, forward and reverse threaded screw; 304, clamping plate; 305, hand crank. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-Figure 4 A carton compression strength testing machine includes a frame mechanism, and also includes a pressing mechanism arranged in the middle of the frame mechanism for adjusting the inclination angle and applying non-uniform downward pressure, and a placing mechanism for supporting and clamping the carton is arranged below the pressing mechanism.

[0026] In this embodiment: the frame mechanism includes a base 101, two columns 102 are symmetrically arranged on the base 101, a guide groove 103 is opened on the inner side of the column 102, a crossbeam 104 is installed on the top of the column 102, a control panel 105 is arranged in front of the column 102, both ends of the column 102 are bolted to the crossbeam 104 and the base 101 respectively, the base 101 is used to fix the column 102, the guide groove 103 in the column 102 plays a guiding and limiting role for the transmission plate 202, the crossbeam 104 is used to support and fix the first hydraulic rod 201, and the control panel 105 displays the measurement results and controls the downward pressure;

[0027] In this embodiment: the pressing mechanism includes two symmetrically arranged first hydraulic rods 201, a transmission plate 202 is arranged at the bottom of the first hydraulic rod 201, four second hydraulic rods 203 are symmetrically arranged at the bottom of the transmission plate 202, a lower pressing plate 204 is arranged below the second hydraulic rod 203, four ball joint seats 205 are symmetrically arranged on the top of the lower pressing plate 204, a pressure sensor 206 is installed at the bottom of the lower pressing plate 204, the second hydraulic rod 203 is rotatably connected to the ball joint seat 205, the two ends of the first hydraulic rod 201 are respectively bolted to the bottom of the crossbeam 104 and the top of the transmission plate 202, the first hydraulic rod 201 pushes the transmission plate 202 to move downward along the guide groove 103, and the second hydraulic rod 203 at the bottom of the transmission plate 202 pushes the lower pressing plate 204 rotatably connected to the base 101, so that the pressure sensor 206 at the bottom of the lower pressing plate 204 is pressed toward the carton;

[0028] In this embodiment: the placing mechanism includes a placing plate 301, four supporting legs 302 are symmetrically arranged at the bottom of the placing plate 301, a forward and reverse threaded screw 303 is installed in the middle of the placing plate 301, two clamping plates 304 are symmetrically installed on the forward and reverse threaded screw 303, a hand crank 305 is arranged at one end of the forward and reverse threaded screw 303, the placing plate 301 is rectangular in shape, the forward and reverse threaded screw 303 is arranged diagonally along the placing plate 301, the supporting legs 302 fix and support the placing plate 301, the forward and reverse threaded screw 303 is rotated by the hand crank 305, and the clamping plates 304 located on the forward and reverse threaded screw 303 approach each other to clamp the carton.

[0029] Working principle: First, place the carton to be tested on the placement plate 301 fixed by the support legs 302, and rotate the positive and negative threaded screws 303 through the hand crank 305. The clamping plates 304 on the positive and negative threaded screws 303 approach each other and clamp the carton to be tested. When the compressive strength of the carton under non-uniform pressure is to be tested, the elongation of the four second hydraulic rods 203 is adjusted respectively through the control panel 105 on the base 101, and the lower pressure plate 204 is tilted at a certain angle relative to the pressure surface of the carton through the ball joint seat 205. Then, the first hydraulic rod 201 at the bottom of the crossbeam 104 is started, and the first hydraulic rod 201 at the bottom of the crossbeam 104 is turned on. The pressure rod 201 pushes the transmission plate 202 to move downward along the guide groove 103 on the inner side of the column 102, and the second hydraulic rod 203 at the bottom of the transmission plate 202 pushes the lower pressure plate 204 to move downward. The pressure sensor 206 at the bottom of the lower pressure plate 204 presses against the carton to measure the compressive strength of the carton under non-uniform pressure. The measurement data is displayed through the control panel 105. When the compressive strength of the carton under uniform pressure is to be measured, it is only necessary to keep the extension of the four second hydraulic rods 203 the same. At this time, the lower pressure plate 204 is horizontally pressed against the pressure surface of the carton to measure the compressive strength of the carton under uniform pressure.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A carton compression strength testing machine, comprising a frame mechanism, characterized in that: It also includes a pressing mechanism disposed in the middle of the frame mechanism for adjusting the tilt angle and applying non-uniform downward pressure, and a placing mechanism for supporting and clamping the carton is disposed below the pressing mechanism; The pressing mechanism comprises two symmetrically arranged first hydraulic rods (201), a transmission plate (202) is arranged at the bottom of the first hydraulic rod (201), four second hydraulic rods (203) are symmetrically arranged at the bottom of the transmission plate (202), a pressing plate (204) is arranged below the second hydraulic rods (203), four ball joint seats (205) are symmetrically arranged at the top of the pressing plate (204), and a pressure sensor (206) is installed at the bottom of the pressing plate (204); The placing mechanism comprises a placing plate (301), four supporting legs (302) are symmetrically arranged at the bottom of the placing plate (301), a positive and negative threaded screw rod (303) is installed in the middle of the placing plate (301), two clamping plates (304) are symmetrically installed on the positive and negative threaded screw rod (303), and a hand crank (305) is arranged at one end of the positive and negative threaded screw rod (303).

2. A carton compression strength testing machine according to claim 1, characterized in that: The frame mechanism comprises a base (101), two columns (102) are symmetrically arranged on the base (101), guide grooves (103) are opened inside the columns (102), cross beams (104) are installed on the tops of the columns (102), and a control panel (105) is arranged in front of the columns (102).

3. A carton compression strength testing machine according to claim 2, characterized in that: Two ends of the upright column (102) are respectively connected to the crossbeam (104) and the base (101) by bolts.

4. A carton compression strength testing machine according to claim 2, characterized in that: Two ends of the first hydraulic rod (201) are respectively connected to the bottom of the crossbeam (104) and the top of the transmission plate (202) by bolts.

5. The carton compression strength testing machine according to claim 1, characterized in that: The second hydraulic rod (203) is rotatably connected to the ball joint seat (205).

6. A carton compression strength testing machine according to claim 1, characterized in that: The placement plate (301) is rectangular in shape, and the forward and reverse threaded screw rods (303) are arranged diagonally along the placement plate (301).

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