A long carton impact resistance detection device

Abstract

The application belongs to the technical field of carton impact resistance detection, in particular to a long carton impact resistance detection equipment, which comprises a base, one end of the base is provided with an impact baffle, and the upper part of the base is symmetrically provided with two mounting bars, the upper parts of the two mounting bars are provided with track assemblies, the track assemblies comprise a set of symmetrically arranged flexible tracks, the upper parts of the two flexible tracks are provided with walking assemblies, the walking assemblies comprise platform cars, and the lower parts of the platform cars are provided with telescopic pull rods for limiting the walking parts of the walking assemblies to be attached to the flexible tracks; through the cooperation of the above structure, the walking path of the walking platform can be changed according to the detection needs, the horizontal impact, inclined impact and vibration and bumping impact occurring in the transportation process of the long carton can be simulated, the long carton impact resistance detection is more in line with the actual situation, and the adaptability of the detection equipment is improved.

Description

Technical Field

[0001] This invention belongs to the field of cardboard box impact resistance testing technology, specifically a long cardboard box impact resistance testing device. Background Technology

[0002] During the production of cardboard boxes, impact resistance testing is required to determine whether the box can maintain the integrity of the contents under impact forces with a small contact area. This is generally done using impact resistance testing equipment. The box is placed under the raised punch head by rotating it on a support frame. The rotational torque that restricts the punch head from descending is released, allowing the punch head to fall freely under gravity and press against the surface of the box. The degree of deformation of the box is then used to determine its impact resistance.

[0003] However, existing technologies often have the following drawbacks: For example, existing equipment for testing the impact resistance of cardboard boxes uses flat or inclined rigid tracks for testing, which cannot accurately simulate the complexity of road conditions during the actual transportation of cardboard boxes. For example, undulating road conditions can cause vertical vibrations of the cardboard box, affecting its strength. In particular, long cardboard boxes are prone to strength reduction in their middle section due to their structural characteristics. This makes existing cardboard box impact resistance testing too simplistic and has low adaptability.

[0004] Therefore, the present invention provides an impact resistance testing device for long cardboard boxes. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by the present invention to solve its technical problem is as follows: The impact resistance testing device for long carton of the present invention includes a base, an impact baffle is provided at one end of the base, and mounting strips are symmetrically arranged on the upper part of the base. The upper part of the two mounting strips is provided with a height-variable track assembly. The track assembly includes a set of symmetrically arranged flexible tracks, and a traveling component is provided on the upper part of the two flexible tracks. The traveling component includes a platform cart, and the lower part of the platform cart is provided with a telescopic pull rod for restricting the traveling part of the traveling component to fit against the flexible track.

[0007] Furthermore, the track assembly also includes a number of lifting elements evenly arranged on the mounting strip. The extended end of the lifting element is provided with a clamping block for clamping the flexible track. Both ends of the flexible track are respectively connected and fixed with constant pressure tie rods through the base, and the constant pressure tie rods are fixedly arranged at the bottom of the base.

[0008] Furthermore, a support plate is provided on the upper part of the mounting strip, and a guide groove matching the flexible track is opened at the upper end of the support plate.

[0009] Furthermore, the walking assembly also includes a drive motor. The lower part of the platform vehicle is provided with a drive motor, the output end of the drive motor is provided with a drive pulley, the walking part of the platform vehicle is provided with a driven pulley, and a transmission belt is provided between the drive pulley and the driven pulley.

[0010] Furthermore, a pressure sensor is provided on the inner side of the impact baffle, and the pressure sensor is electrically connected to the data acquisition module to detect the pressure value at the moment of impact.

[0011] Furthermore, the telescopic rod includes a guide beam, with the guide beam slidably disposed between the two mounting strips, and guide grooves matching the guide beam are opened on the opposite sides of the mounting strips. A return spring is provided on the lower side of the guide beam, and a connecting pressure rod is inserted into the lower end of the return spring, with the upper end of the connecting pressure rod passing through the guide beam and being connected and fixed to the platform vehicle.

[0012] Furthermore, a conductive strip is provided in the guide groove, and mounting holes are provided on the guide beam near the mounting strip side. A tightening spring is provided in the mounting hole, and carbon brush blocks are provided on the outer side of the two tightening springs. The carbon brush blocks are electrically connected to the drive motor.

[0013] Furthermore, the mounting strip is composed of a first mounting strip, a second mounting strip, and a third mounting strip. Both ends of the second mounting strip are provided with inserts, and one end of the first and third mounting strips is provided with slots that match the inserts. Adjustment holes are evenly provided on the first mounting strip, the third mounting strip, and the inserts, and positioning pins are inserted into the adjustment holes to achieve positioning and fixation.

[0014] Furthermore, the base is composed of two slides, and the first mounting strip and the second mounting strip are respectively fixedly connected to the slides.

[0015] The beneficial effects of this invention are as follows:

[0016] 1. The impact resistance testing equipment for long cardboard boxes described in this invention replaces the existing rigid track with a height-variable track assembly by setting a flexible track. This allows the walking path of the walking assembly to be changed according to the testing needs, thereby simulating the horizontal impact, tilting impact, and vibration and bumping impact that occur during the transportation of long cardboard boxes. This makes the impact resistance testing of long cardboard boxes more realistic and improves the adaptability of the testing equipment.

[0017] 2. The impact resistance testing equipment for long cardboard boxes described in this invention improves the stability of the platform vehicle during vibration and impact testing by setting a telescopic tie rod that restricts the walking part of the walking component to fit against the flexible track, thereby improving the reliability of the test results of the impact resistance testing equipment. Attached Figure Description

[0018] The invention will now be further described with reference to the accompanying drawings.

[0019] Figure 1 This is a perspective view of the present invention;

[0020] Figure 2 This is a top view of the present invention;

[0021] Figure 3 yes Figure 2 Sectional view at point AA;

[0022] Figure 4 yes Figure 2 Sectional view at point BB;

[0023] Figure 5 This is a three-dimensional view of the walking component in this invention;

[0024] Figure 6 yes Figure 3 Enlarged view of a section at point C;

[0025] Figure 7 This is a perspective view of the base and mounting strip in Embodiment 2 of the present invention;

[0026] Figure 8 This is a perspective view of the first mounting strip in Embodiment 2 of the present invention;

[0027] Figure 9 This is a perspective view of the second mounting strip in Embodiment 2 of the present invention.

[0028] In the diagram: 1. Base; 2. Impact baffle; 3. Mounting strip; 4. Track assembly; 5. Traveling assembly; 6. Telescopic tie rod; 7. Support plate; 8. Conductive strip; 9. Tightening spring; 10. Carbon brush block; 11. Pressure sensor; 12. Data acquisition module; 13. Guide groove; 30. First mounting strip; 31. Second mounting strip; 32. Third mounting strip; 33. Insert strip; 34. Adjustment hole; 35. Positioning pin; 40. Lifting element; 41. Clamping block; 42. Flexible track; 43. Constant pressure tie rod; 50. Platform cart; 51. Drive motor; 52. Driving pulley; 53. Driven pulley; 54. Transmission belt; 60. Guide beam; 61. Return spring; 62. Connecting pressure rod. Detailed Implementation

[0029] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0030] Example 1: As Figures 1 to 6As shown, in this embodiment of the invention, one end of the base 1 is provided with an impact baffle 2, and the inner side of the impact baffle 2 is provided with a pressure sensor 11. The pressure sensor 11 is electrically connected to the data acquisition module 12 and is used to detect the pressure value at the moment of impact. The impact force of the carton hitting the impact baffle 2 is detected by the pressure sensor 11, and the force detected by the pressure sensor 11 is collected and recorded by the data acquisition module 12.

[0031] like Figures 2 to 4 As shown, several lifting elements 40 are mounted on the mounting strip 3. The lifting elements 40 are hydraulic columns. At the extended end of the hydraulic column, there is a clamping block 41 for clamping the flexible track 42. The two ends of the flexible track 42 are respectively connected and fixed by constant pressure tie rods 43 through the base 1. The constant pressure tie rods 43 are fixedly set at the bottom of the base 1. When the hydraulic columns drive the clamping block 41 to linearly reduce the height of the flexible track 42 along the movement direction of the platform vehicle 50, the flexible track 42 can be tilted and adjusted at 0-30° with the mounting strip 3. When the hydraulic columns drive the clamping block 41 to non-linearly change the height of the flexible track 42 along the movement direction of the platform vehicle 50, the height of the flexible track 42 changes non-linearly, thereby simulating the undulation of bumpy road conditions.

[0032] like Figure 1 and Figure 6 As shown, mounting strips 3 are symmetrically arranged on the upper part of the base 1. A set of symmetrically arranged flexible tracks 42 is provided on the upper part of the two mounting strips 3. The flexible tracks 42 are made of steel cables with a tensile strength of 1450-1960MPa. A platform cart 50 is provided on the upper part of the two flexible tracks 42. A drive motor 51 is installed on the lower part of the platform cart 50. A drive pulley 52 is fixedly installed on the output end of the drive motor 51. A driven pulley 53 is installed on the roller shaft of the platform cart 50. A transmission belt 54 is installed between the drive pulley 52 and the driven pulley 53 for transmission, so that the drive motor 51 can be driven by the transmission belt 54, thereby making the platform cart 50 move along the direction of the flexible track 42.

[0033] like Figure 2 and Figure 3As shown, during tilting impacts or nonlinear bumping impacts, the flexible track 42 is easily disturbed, causing the rollers of the platform vehicle 50 to easily detach from the flexible track 42, affecting the normal operation of the impact detection equipment. The lower part of the platform vehicle 50 is provided with a telescopic rod 6 to restrict the walking part of the walking component 5 to fit against the flexible track 42. The telescopic rod 6 includes a guide beam 60, and the guide beam 60 is slidably provided between two mounting strips 3. The opposite sides of the mounting strips 3 are provided with guide grooves 13 that match the guide beam 60. A return spring 61 is provided on the lower side of the guide beam 60. A connecting pressure rod 62 is inserted into the lower end of the return spring 61, and the upper end of the connecting pressure rod 62 passes through the guide beam 60 and is connected and fixed to the platform vehicle 50. The return spring 61 can automatically adjust according to the distance between the flexible track 42 and the mounting strips 3. Through the sliding connection between the guide beam 60 and the guide groove 13, the rollers of the platform vehicle 50 are always in contact with the flexible track 42.

[0034] like Figures 2 to 4 As shown, during the impact testing process, it was found that when performing horizontal impact, the weight of the platform vehicle 50 acts vertically on the flexible track 42, causing the flexible track 42 to bear excessive pressure and easily dent, which in turn affects the impact testing structure. The upper part of the mounting strip 3 is fixed with a support plate 7, and the upper end of the support plate 7 is provided with a guide groove that matches the flexible track 42 to support the flexible track 42 and enable the impact testing equipment to operate normally.

[0035] like Figure 3 and Figure 6 As shown, during the testing process, it was found that the high-frequency reciprocating motion of the platform vehicle 50 easily caused motion resistance and entanglement problems due to cable dragging. To solve this problem, a conductive strip 8 was installed in the guide groove 13, and mounting holes were opened on both sides of the guide beam 60 near the mounting strip 3. A clamping spring 9 was installed in the mounting hole, and carbon brush blocks 10 were installed on the outer side of both clamping springs 9. The carbon brush blocks 10 were electrically connected to the drive motor 51. The clamping springs 9 pushed the carbon brush blocks 10 to fit tightly with the conductive strip 8, so that the platform vehicle 50 could achieve stable power supply during movement.

[0036] Example 2: Figures 7 to 9 As shown in Example 1, another embodiment of the present invention is as follows:

[0037] The mounting strip 3 is designed to be composed of a first mounting strip 30, a second mounting strip 31, and a third mounting strip 32 spliced ​​together. Both ends of the second mounting strip 31 are fixedly connected with insert strips 33. Slots for inserting insert strips 33 are opened at one end of the first mounting strip 30 and the third mounting strip 32. Adjustment holes 34 are evenly opened on the first mounting strip 30, the third mounting strip 32, and the insert strips 33, so that the device can be quickly adjusted according to the actual detection track length requirements, thereby improving the detection range and adaptability of the detection equipment.

[0038] The base 1 is composed of two slides 100, and the first mounting strip 30 and the second mounting strip 31 are fixedly connected to the slides 100 respectively, making the distance adjustment between the first mounting strip 30 and the second mounting strip 31 more convenient and quick.

[0039] Working principle: Before testing, according to the needs of the long carton to be tested, when tilting impact testing is required, several lifting elements 40 drive the clamping block 41 to drive the flexible track 42 to decrease linearly along the movement direction of the platform vehicle 50, so that the flexible track 42 can be tilted and adjusted at 0-30° with the installation strip 3.

[0040] When it is necessary to simulate nonlinear vibration and impact detection under bumpy road conditions, several lifting elements 40 are controlled to drive the clamping block 41 to cause the height of the flexible track 42 to change nonlinearly along the movement direction of the platform vehicle 50, so that the height of the flexible track 42 changes nonlinearly.

[0041] During testing, the long carton to be tested is placed on the platform cart 50. The top spring 9 pushes the carbon brush block 10 to fit tightly against the conductive strip 8, providing a stable power supply to the drive motor 51. The drive motor 51 drives the rotation of the drive pulley 52, and the transmission belt 54 drives the driven pulley 53 to drive the rollers of the platform cart 50 to rotate synchronously. At the same time, the return spring 61 can automatically adjust according to the distance between the flexible track 42 and the mounting strip 3. The sliding connection between the guide beam 60 and the guide groove 13 ensures that the rollers of the platform cart 50 are always in contact with the flexible track 42, allowing the platform cart 50 to move along the flexible track 42. When the long carton impacts the impact baffle 2, the pressure sensor 11 detects the impact force of the carton hitting the impact baffle 2, and the data acquisition module 12 collects and records the force detected by the pressure sensor 11.

[0042] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0043] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., 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 invention 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 limiting the scope of protection of this invention.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An impact resistance testing device for long cardboard boxes, comprising a base (1), characterized in that: One end of the base (1) is provided with an impact baffle (2), and the upper part of the base (1) is symmetrically provided with mounting strips (3). The upper part of the two mounting strips (3) is provided with a height-variable track assembly (4). The track assembly (4) includes a set of symmetrically arranged flexible tracks (42), and the upper part of the two flexible tracks (42) is provided with a walking assembly (5). The walking assembly (5) includes a platform vehicle (50), and the lower part of the platform vehicle (50) is provided with a telescopic pull rod (6) for restricting the walking part of the walking assembly (5) to fit against the flexible track (42). The track assembly (4) also includes a number of lifting elements (40) evenly arranged on the mounting strip (3). The extended end of the lifting element (40) is provided with a clamping block (41) for clamping the flexible track (42). The two ends of the two flexible tracks (42) are respectively connected and fixed by constant pressure rods (43) passing through the base (1), and the constant pressure rods (43) are fixedly arranged at the bottom of the base (1).

2. The impact resistance testing equipment for long cardboard boxes according to claim 1, characterized in that: The upper part of the mounting strip (3) is provided with a support plate (7), and the upper end of the support plate (7) is provided with a guide groove that matches the flexible track (42).

3. The impact resistance testing equipment for long cardboard boxes according to claim 2, characterized in that: The walking assembly (5) also includes a drive motor (51). The lower part of the platform vehicle (50) is provided with a drive motor (51). The output end of the drive motor (51) is provided with a drive pulley (52). The walking part of the platform vehicle (50) is provided with a driven pulley (53). A transmission belt (54) is provided between the drive pulley (52) and the driven pulley (53).

4. The impact resistance testing equipment for long cardboard boxes according to claim 3, characterized in that: The impact baffle (2) is provided with a pressure sensor (11) on its inner side, and the pressure sensor (11) is electrically connected to the data acquisition module (12) to detect the pressure value at the moment of impact.

5. The impact resistance testing equipment for long cardboard boxes according to claim 4, characterized in that: The telescopic rod (6) includes a guide beam (60), and the guide beam (60) is slidably provided between the two mounting strips (3). The opposite sides of the mounting strips (3) are provided with guide grooves (13) that match the guide beam (60). A return spring (61) is provided on the lower side of the guide beam (60). A connecting pressure rod (62) is inserted into the lower end of the return spring (61), and the upper end of the connecting pressure rod (62) passes through the guide beam (60) and is connected and fixed to the platform vehicle (50).

6. The impact resistance testing equipment for long cardboard boxes according to claim 5, characterized in that: The guide groove (13) is provided with a conductive strip (8), and the guide beam (60) has mounting holes on the side near the mounting strip (3), and a tightening spring (9) is provided in the mounting hole. Carbon brush blocks (10) are provided on the outer side of the two tightening springs (9), and the carbon brush blocks (10) are electrically connected to the drive motor (51).

7. The impact resistance testing equipment for long cardboard boxes according to claim 1, characterized in that: The mounting strip (3) is spliced ​​together from the first mounting strip (30), the second mounting strip (31) and the third mounting strip (32). The second mounting strip (31) has inserts (33) at both ends, and the first mounting strip (30) and the third mounting strip (32) have slots that match the inserts (33) at one end. The first mounting strip (30), the third mounting strip (32) and the inserts (33) are all evenly provided with adjustment holes (34), and positioning pins (35) are inserted into the adjustment holes (34) to achieve positioning and fixation.

8. The impact resistance testing equipment for long cardboard boxes according to claim 7, characterized in that: The base (1) is composed of two slides (100), and the first mounting strip (30) and the second mounting strip (31) are fixedly connected to the slides (100) respectively.

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