Strip carton impact resistance detection equipment

Abstract

The invention belongs to the technical field of carton impact resistance detection, and particularly relates to long carton impact resistance detection equipment which comprises a base, an impact baffle is arranged at one end of the base, mounting strips are symmetrically arranged on the upper portion of the base, and a rail assembly is arranged on the upper portions of the two mounting strips. The track assembly comprises a group of flexible tracks which are symmetrically arranged, a walking assembly is arranged on the upper portions of the two flexible tracks, the walking assembly comprises a platform car, and a telescopic pull rod used for limiting a walking part of the walking assembly to be attached to the flexible tracks is arranged on the lower portion of the platform car; through the cooperation of the structures, the change of the walking path of the walking platform can be changed according to detection requirements, and horizontal impact, inclined impact and vibration bumping impact occurring in the long-strip carton transportation process are simulated, so that the impact resistance detection of the long-strip carton is more practical, and the adaptability of the detection equipment is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of carton impact resistance detection, in particular to a device for detecting the impact resistance of a long carton. Background Art

[0002] During the production process of cartons, impact resistance testing is required to determine whether the cartons can ensure the integrity of the internal items under impact forces with a small contact area. Generally, impact resistance testing equipment is used for testing. The punch head is raised by rotating on the support frame, and the carton is placed under the raised punch head. The rotational torque that restricts the descent of the punch head is released, so that the punch head performs free fall motion under the action of gravity and punches the surface of the carton. The impact resistance of the carton is judged according to the degree of deformation of the carton.

[0003] However, the existing technologies often have the following defects: for example, the existing equipment for testing the impact resistance of cartons uses a flat or inclined rigid track for testing, which cannot accurately simulate the complexity of road conditions during actual carton transportation. For example, the impact of vertical vibration of the carton caused by undulating road conditions on the strength of the carton, especially long cartons due to their structural characteristics, which are prone to strength reduction in the middle section during vibration, making the existing carton impact resistance test too simple and the test adaptability is low.

[0004] To this end, the present invention provides a long carton anti-impact detection device. Summary of the Invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve its technical problems is: the long cardboard box impact resistance detection equipment described in the present invention includes a base, an impact baffle is provided at one end of the base, and mounting bars are symmetrically provided on the upper part of the base, and a height-variable track assembly is provided on the upper part of the two mounting bars. The track assembly includes a group of symmetrically arranged flexible rails, and a walking assembly is provided on the upper part of the two flexible rails. The walking assembly includes a platform car, and the lower part of the platform car is provided with a telescopic pull rod for limiting the walking part of the walking assembly to fit with the flexible rail.

[0007] Furthermore, the track assembly also includes a number of lifting elements evenly arranged on the mounting bar, and the protruding ends of the lifting elements are provided with clamping blocks for clamping the flexible track. The two ends of the flexible track are respectively connected and fixed with constant pressure rods passing through the base, and the constant pressure rods are fixed at the bottom of the base.

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

[0009] Furthermore, the walking component 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 driving pulley, the walking part of the platform vehicle is provided with a driven pulley, and a transmission belt is provided between the driving 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 for detecting the pressure value at the moment of impact.

[0011] Furthermore, the telescopic pull rod includes a guide beam, a guide beam is slidably provided between the two mounting bars, and a guide groove matching the guide beam is provided on the opposite side of the mounting bar, a return spring is provided on the lower side of the guide beam, a connecting pressure rod is inserted into the lower end of the return spring, and the upper end of the connecting pressure rod passes through the guide beam and is connected and fixed to the platform vehicle.

[0012] Furthermore, a conductive strip is provided in the guide slot, and mounting holes are provided on the guide beams near the mounting strips, and tightening springs are provided in the mounting holes. Carbon brush blocks are provided on the outsides of the two tightening springs, and the carbon brush blocks are electrically connected to the drive motor.

[0013] Furthermore, the mounting bar is spliced ​​together by a first mounting bar, a second mounting bar and a third mounting bar, both ends of the second mounting bar are provided with insertion strips, and one end of the first mounting bar and the third mounting bar are provided with slots matching the insertion strips, and the first mounting bar, the second mounting bar and the insertion strip are evenly provided with adjustment holes, 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 bar and the second mounting bar are fixedly connected to the slides respectively.

[0015] The beneficial effects of the present invention are as follows: 1. The impact resistance testing equipment for long cardboard boxes described in the present invention replaces the existing rigid track with a highly variable track assembly by setting a flexible track, so that the walking path of the walking platform can be changed according to the testing needs, thereby simulating the horizontal impact, tilt impact and vibration and bump impact that occur during the transportation of long cardboard boxes, making the impact resistance testing of long cardboard boxes more practical and improving the adaptability of the testing equipment.

[0016] 2. The long cardboard box impact resistance testing equipment described in the present invention improves the stability of the platform vehicle during vibration, bump and impact testing by setting a telescopic pull rod that limits the walking part of the walking assembly to fit with the flexible track, thereby improving the reliability of the test results of the impact resistance testing equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 It is a perspective view of the present invention; Figure 2 is a top view of the present invention; Figure 3 yes Figure 2 Cross-sectional view at AA in the middle; Figure 4 yes Figure 2 Cross-sectional view at the middle BB; Figure 5 It is a three-dimensional diagram of the walking platform in the present invention; Figure 6 yes Figure 3 A partial enlarged view of point C in the middle; Figure 7 This is a three-dimensional diagram of the base and the mounting bar in the second embodiment of the present invention; Figure 8 This is a three-dimensional diagram of the first mounting bar in Example 2 of the present invention; Figure 9 This is a three-dimensional diagram of the second mounting bar in Example 2 of the present invention.

[0019] In the figure: 1. Base; 2. Impact baffle; 3. Mounting bar; 4. Track assembly; 5. Walking platform; 6. Telescopic pull rod; 7. Support plate; 8. Conductive bar; 9. Tension spring; 10. Carbon brush block; 11. Pressure sensor; 12. Data acquisition module; 13. Guide slide; 30. First mounting bar; 31. Second mounting bar; 32. Third mounting bar; 33. Insert bar; 34. Adjustment hole; 35. Positioning pin; 40. Lifting element; 41. Clamping block; 42. Flexible track; 43. Constant pressure pull rod; 50. Platform car; 51. Drive motor; 52. Active pulley; 53. Driven pulley; 54. Transmission belt; 60. Guide beam; 61. Return spring; 62. Connecting pressure bar. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] Example 1: Figures 1 to 6 As shown, an impact baffle 2 is provided at one end of the base 1 described in the embodiment of the present invention, and a pressure sensor 11 is provided on the inner side of the impact baffle 2, and the pressure sensor 11 is electrically connected to the data acquisition module 12 for detecting 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.

[0022] like Figures 2 to 4As shown, there are several lifting elements 40 on the mounting bar 3. The lifting elements 40 adopt hydraulic columns. A clamping block 41 for clamping the flexible track 42 is provided at the protruding end of the hydraulic column. Both ends of the flexible track 42 pass through the base 1 and are connected and fixed with constant pressure pull rods 43, and the constant pressure pull rods 43 are fixed at the bottom of the base 1. When the hydraulic columns drive the clamping blocks 41 to drive the height of the flexible track 42 to linearly decrease along the movement direction of the platform vehicle 50, the flexible track 42 can be tilted and adjusted to 0-30° with the mounting bar 3. When the hydraulic columns drive the clamping blocks 41 to drive the height of the flexible track 42 to change nonlinearly along the movement direction of the platform vehicle 50, the height of the flexible track 42 changes nonlinearly, thereby simulating the ups and downs of bumpy road conditions.

[0023] like Figure 1 and Figure 6 As shown, mounting bars 3 are symmetrically arranged on the upper part of the base 1, and a group of symmetrically arranged flexible rails 42 are provided on the upper part of the two mounting bars 3. The flexible rails 42 are made of steel cables with a tensile strength of 1450-1960 MPa. A platform car 50 is provided on the upper part of the two flexible rails 42, and a driving motor 51 is installed on the lower part of the platform car 50. A driving pulley 52 is fixedly installed on the output end of the driving motor 51, and a driven pulley 53 is installed on the roller shaft of the platform car 50, and a transmission belt 54 is installed between the driving pulley 52 and the driven pulley 53 for transmission, so that the driving motor 51 can be driven by the transmission belt 54, and then the platform car 50 moves along the direction of the flexible rail 42.

[0024] like Figure 2 and Figure 3 As shown, when an inclined impact or a nonlinear bumpy impact is performed, it is easy to cause disturbance of the flexible track 42, so that the rollers of the platform vehicle 50 are easy to separate from the flexible track 42, affecting the normal operation of the impact detection equipment. A telescopic pull rod 6 is provided at the lower part of the platform vehicle 50 for limiting the walking part of the walking assembly 5 to fit with the flexible track 42. The telescopic pull rod 6 includes a guide beam 60, and a guide beam 60 is slidingly provided between the two mounting bars 3, and a guide slot 13 matching the guide beam 60 is provided on the opposite side of the mounting bar 3. A return spring 61 is provided on the lower side of the guide beam 60, and a connecting pressure rod 62 is inserted at 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 fixed to the platform vehicle 50. The return spring 61 can be automatically adjusted according to the distance between the flexible track 42 and the mounting bar 3, and the sliding connection between the guide beam 60 and the guide slot 13 makes the rollers of the platform vehicle 50 always fit with the flexible track 42.

[0025] like Figures 2 to 4As shown, during the impact detection process, it was found that when performing horizontal impact, due to the vertical action of the weight of the platform vehicle 50 on the flexible track 42, the pressure borne by the flexible track 42 was too large and it was easy to cause concave phenomenon, thereby affecting the structure of the impact detection. The upper part of the mounting bar 3 was fixed with a support plate 7, and the upper end of the support plate 7 was provided with a guide groove matching the flexible track 42 to support the flexible track 42 and ensure the normal operation of the impact detection equipment.

[0026] like Figure 3 and Figure 6 As shown, during the detection implementation process, it was found that with the high-frequency reciprocating motion detection of the platform vehicle 50, the movement resistance and entanglement problem caused by the cable dragging is easy to occur. This phenomenon has not been solved, and a conductive bar 8 is provided in the guide groove 13. The guide beam 60 is provided with mounting holes on the side close to the mounting bar 3, and a tightening spring 9 is provided in the mounting hole. A carbon brush block 10 is provided on the outside of the two tightening springs 9. The carbon brush block 10 is electrically connected to the drive motor 51. The tightening spring 9 pushes the carbon brush block 10 to fit tightly with the conductive bar 8, so that stable power supply is achieved during the movement of the platform vehicle 50.

[0027] Example 2: Figures 7 to 9 As shown in Comparative Example 1, another embodiment of the present invention is: The mounting bar 3 is designed to be composed of a first mounting bar 30, a second mounting bar 31 and a third mounting bar 32, and both ends of the second mounting bar 31 are fixedly connected to an insertion bar 33. A slot for inserting the insertion bar 33 is provided at one end of the first mounting bar 30 and the third mounting bar 32. Adjustment holes 34 are evenly provided on the first mounting bar 30, the second mounting bar 31 and the insertion bar 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.

[0028] The base 1 is composed of two slides 100 , and the first mounting bar 30 and the second mounting bar 31 are fixedly connected to the slides 100 respectively, so that the distance between the first mounting bar 30 and the second mounting bar 31 can be adjusted more conveniently and quickly.

[0029] Working principle: Before testing, according to the needs of the long carton to be tested, when a tilt impact test is required, the lifting elements 40 are controlled to drive the clamping block 41 to drive the flexible track 42 to linearly lower the height along the movement direction of the platform vehicle 50, so that the flexible track 42 can be tilted 0-30 degrees relative to the mounting bar 3; When it is necessary to simulate nonlinear vibration impact detection of 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.

[0030] During inspection, the long cardboard box to be inspected is placed on the platform carton 50, and the tensioning spring 9 is used to push the carbon brush block 10 to fit tightly with the conductive strip 8 to provide stable power supply for the drive motor 51. The drive motor 51 is used to drive the rotation of the active pulley 52, and the transmission belt 54 is used to drive the driven pulley 53 to drive the roller of the platform carton 50 to rotate synchronously. At the same time, the reset spring 61 can be automatically adjusted according to the distance between the flexible track 42 and the mounting bar 3, and the sliding connection between the guide beam 60 and the guide slide groove 13 is used to make the roller of the platform carton 50 always fit with the flexible track 42, so that the platform carton 50 moves along the flexible track 42. When the long cardboard box collides with the impact baffle 2, the pressure sensor 11 is used to detect the impact force of the carton hitting the impact baffle 2, and the data acquisition module 12 is used to collect and record the detection force of the pressure sensor 11.

[0031] The above-mentioned front, back, left, right, up and down are all based on the Figure 1 As a benchmark, according to the person's observation perspective, 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.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention.

[0033] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A long carton anti-impact testing device, comprising a base (1), characterized in that: An impact baffle (2) is provided at one end of the base (1), and mounting bars (3) are symmetrically provided on the upper portion of the base (1), and a height-variable track assembly (4) is provided on the upper portion of two mounting bars (3), and the track assembly (4) includes a group of symmetrically arranged flexible tracks (42), and a walking assembly (5) is provided on the upper portion of the two flexible tracks (42), and the walking assembly (5) includes a platform car (50), and a telescopic pull rod (6) is provided on the lower portion of the platform car (50) for limiting the walking portion of the walking assembly (5) to fit with the flexible tracks (42).

2. The long carton impact resistance testing device according to claim 1, characterized in that: The track assembly (4) further comprises a plurality of lifting elements (40) uniformly arranged on the mounting bar (3), wherein the protruding ends of the lifting elements (40) are provided with clamping blocks (41) for clamping the flexible tracks (42), and the two ends of the two flexible tracks (42) respectively pass through the base (1) and are connected and fixed with constant pressure rods (43), and the constant pressure rods (43) are fixedly arranged at the bottom of the base (1).

3. The long carton impact resistance testing device according to claim 2, characterized in that: A support plate (7) is provided on the upper portion of the mounting bar (3), and a guide groove matching the flexible track (42) is provided at the upper end of the support plate (7).

4. The long carton impact resistance testing device according to claim 3, characterized in that: The traveling assembly (5) further comprises a driving motor (51). The driving motor (51) is provided at the lower portion of the platform vehicle (50). The output end of the driving motor (51) is provided with a driving pulley (52). The traveling portion of the platform vehicle (50) is provided with a driven pulley (53), and a transmission belt (54) is provided between the driving pulley (52) and the driven pulley (53).

5. The long carton impact resistance testing device according to claim 4, characterized in that: A pressure sensor (11) is provided inside the impact baffle (2), and the pressure sensor (11) is electrically connected to a data acquisition module (12) for detecting the pressure value at the moment of impact.

6. The long carton impact resistance testing device according to claim 5, characterized in that: The telescopic pull rod (6) includes a guide beam (60), a guide beam (60) is slidably provided between the two mounting bars (3), and a guide slot (13) matching the guide beam (60) is provided on the opposite side of the mounting bar (3), 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).

7. The long carton impact resistance testing device according to claim 6, characterized in that: A conductive strip (8) is provided in the guide chute (13), and a mounting hole is provided on the side of the guide crossbeam (60) close to the mounting strip (3), and a tightening spring (9) is provided in the mounting hole. A carbon brush block (10) is provided on the outside of the two tightening springs (9), and the carbon brush block (10) is electrically connected to the drive motor (51).

8. The long carton impact resistance testing device according to claim 1, characterized in that: The mounting bar (3) is formed by splicing a first mounting bar (30), a second mounting bar (31) and a third mounting bar (32); both ends of the second mounting bar (31) are provided with inserting bars (33); one end of each of the first mounting bar (30) and the third mounting bar (32) is provided with a slot matching the inserting bar (33); the first mounting bar (30), the second mounting bar (31) and the inserting bar (33) are evenly provided with adjustment holes (34); and positioning pins (35) are inserted into the adjustment holes (34) to achieve positioning and fixing.

9. The long carton impact resistance testing device according to claim 8, characterized in that: The base (1) is composed of two slides (100), and the first mounting bar (30) and the second mounting bar (31) are fixedly connected to the slides (100), respectively.

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