Food-grade environment-friendly blister box compression resistance detection system and method

Abstract

The invention discloses a food-grade environment-friendly blister box compression resistance detection system and method, and relates to the technical field of compression resistance testing. The punching device is used for punching holes in the plastic blister box cover; the detection part is arranged at the punching position on the blister box cover and is used for detecting the deformation condition of the blister box when the blister box is extruded; the walking simulation part is used for simulating a mutual extrusion environment of the blister boxes in a walking state; and a driving simulation part. According to the device, the containing bags are arranged and used for containing the blister boxes side by side, so that the extrusion state of the blister boxes in an external environment is simulated, and the pressure applying action condition on the blister boxes in the horizontal direction is created; meanwhile, a detection part is arranged and used for feeding back the deformation condition of the blister box, and therefore the effect generated under the pressure applying effect is reflected; and the walking simulation component and the driving simulation component are arranged to simulate the walking process and the riding process in the delivery process, so that objective conditions existing in the use process of the food blister box can be reflected, and the objective authenticity of detection is improved.

Description

Technical Field

[0001] The invention relates to the technical field of compression resistance testing, and in particular to a food-grade environmentally friendly blister box compression resistance testing system and method. Background Art

[0002] Food-grade environmentally friendly blister boxes are usually made of plastic sheets such as PP (polypropylene), PET (polyethylene terephthalate), and PE (polyethylene). These materials meet food safety standards, are non-toxic, odorless, resistant to acid and alkali corrosion, and will not cause pollution to food; after the blister boxes are produced, a series of tests are required to detect the various performance indicators of the blister boxes, among which the compression test of the blister boxes can reflect the quality of the product.

[0003] In the prior art, the compressive performance test of food-grade environmentally friendly blister boxes usually adopts the test method of applying pressure in the vertical direction, that is, applying a vertical load directly to the top of the box through a pressure tester, observing its deformation, rupture or height change and other indicators, so as to evaluate the compressive strength of the box. This type of test method is based on the simulation of static stacking scenarios, and mainly reflects the ability of blister boxes to withstand vertical stacking pressure during storage or transportation. Its test standards (such as ISO 12048, GB / T4857.4) are also mostly centered on the mechanical properties of single-direction pressure.

[0004] However, this type of traditional compression test method has significant limitations when applied to food blister boxes. Since food blister boxes are usually used for takeout or packaging, and for easy carrying, blister boxes are usually placed in plastic bags: the existing technology can only simulate the mechanical response of blister boxes in a vertical stacking state, and cannot reproduce the more complex multi-directional dynamic extrusion effect in actual delivery scenarios. For example, in the process of food delivery, multiple blister boxes containing food are often placed in a handbag in a parallel manner. When the handbag is lifted or moved, the box body gathers toward the middle of the bag body due to gravity, squeezes each other in the horizontal direction and generates lateral pressure; at the same time, dynamic factors such as vibration or bumps during transportation (such as walking and carrying and driving) will further aggravate the collision and friction between the box bodies. This type of multi-box parallel and dynamic extrusion composite stress state is essentially different from the single-direction static loading condition in the traditional vertical compression test. There is an urgent need for a compression test device that can simulate the environment of the food blister box delivery process. Summary of the invention

[0005] The purpose of the present invention is to provide a food-grade environmentally friendly blister box compression test system and method to solve the problem that traditional technology can only perform single-direction static loading condition testing and cannot simulate the food blister box delivery process environment for compression testing.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: The food-grade environmentally friendly blister box compression test system comprises: a frame, wherein two belt conveyor lines are installed inside the frame; a punching device, used for punching holes on the plastic blister box cover; a detection component, installed at the punching position on the blister box cover, used for detecting the deformation of the blister box when it is squeezed; a walking simulation component, used for simulating the mutual squeezing environment of the blister boxes in the walking state; a driving simulation component, used for simulating the mutual squeezing environment of the blister boxes in the driving state of a vehicle; a plurality of containing bags, which are respectively suspended on the driving simulation component and the walking simulation component, and are used for containing two plastic blister boxes side by side; an extrusion component, used for applying a pressure environment to the blister boxes; the walking simulation component and the driving simulation component are respectively placed on the conveyor belts of the two belt conveyor lines.

[0007] By adopting the above technical scheme, a containing bag is provided to place blister boxes side by side, thereby simulating the extrusion state of the blister boxes in a take-out environment, thereby creating the conditions for applying pressure to the blister boxes in the horizontal direction; at the same time, a detection component is provided to feedback the deformation of the blister boxes, thereby reflecting the effect produced under the pressure; and a walking simulation component and a driving simulation component are provided to simulate the walking process and the riding process during delivery, thereby reflecting the objective conditions existing in the use of the food blister boxes and improving the objective authenticity of the detection.

[0008] A further improvement of the technical solution of the present invention is that the detection component includes a detection plug and a movable pressure ring, the lower part of the detection plug is an inner pressing part, the middle part is a screwing part, the upper part is a screw grip part, the outer wall of the screwing part is threaded, the movable pressure ring is threadedly connected to the outer side of the screwing part, and the inner pressing part and the side close to the movable pressure ring are fixedly connected with a sealing ring; a sampling tube and an air intake pipe are fixedly inserted into the interior of the detection plug, and the sampling tube and the air intake pipe both pass through the detection plug from top to bottom, the top of the sampling tube is connected to a display tube through a detachable pipe joint, the top of the display tube is fixedly connected to a one-way valve, the bottom of the sampling tube is fixedly connected to a suction tube, the display tube is set as a transparent tube and the outer wall is set with scales; the bottom of the air intake pipe is fixedly connected to a one-way valve; the screw grip part is set as a prism structure with equal bottom side lengths.

[0009] By adopting the above technical solution and setting a special detection component, when the blister box is deformed or reset, the pressure in the blister box changes, so that the detection liquid is discharged into the display tube, so as to achieve "quantification" of the deformation. When the blister box contains detection liquid, the detection liquid will be squeezed upward through the above pipeline in turn. After the experiment, the total deformation amount generated in the simulated environment can be reflected by counting the amount of detection liquid in the above suction tube, sampling tube and display tube.

[0010] A further improvement of the technical solution of the present invention is that: the walking simulation component includes a U-shaped frame, two eccentric shafts are rotatably connected between the inner sides of the U-shaped frame, both ends of the eccentric shafts extend to the two sides of the U-shaped frame respectively and are fixedly connected with turning handles, a vertical plate is rotatably connected between the turning handles located on the same side of the U-shaped frame, and pedals are fixedly connected at the bottom of the vertical plates for increasing the contact area with the supporting surface during walking, thereby increasing the stability of walking, and the pedals are placed on one of the belt conveyor lines; a support beam is fixedly connected to the top of the U-shaped frame, and support arms are fixedly connected to both sides of the support beam, and a number of hooks for hanging bags are fixedly connected to the bottom of the support arms; a motor is fixedly installed on one side of the inner wall of the U-shaped frame, and the output end of the motor is connected to the two eccentric shafts through a synchronous belt and a synchronous wheel transmission.

[0011] By adopting the above technical solution, the motor is controlled to drive the two eccentric shafts to rotate, thereby driving the rotating handles to rotate. The rotating handles on both sides of the U-shaped frame are parallel to each other and in opposite directions. The two rotating handles on each side jointly drive a vertical plate to rotate around the eccentric shaft, and the rotation process is vertically downward. The two vertical plates cooperate to simulate walking movements. At the same time, in order to reduce the span of the overall setting of the device, the above structure is set on one of the belt conveyor lines, so that the walking simulation process is carried out similar to that on a treadmill.

[0012] A further improvement of the technical solution of the present invention is that: the top of the belt conveyor line on which the walking simulation component is placed is fixedly connected to a fixed frame, and the top of the inner side of the fixed frame is fixedly connected to two anti-fall frames, the anti-fall frame is composed of two U-shaped plates arranged in parallel, and there is a gap between the two U-shaped plates, and the top of the support beam is fixedly connected to two guide rods, the top ends of the two guide rods respectively pass through the gaps on the two anti-fall frames and are fixedly connected to a mounting plate, the two sides of the guide rods are symmetrically fixedly connected to inclined plates, one side of the inclined plate is slidably connected to a sliding rod, one end of the sliding rod is fixedly connected to a pressure head, the end of the sliding rod away from the pressure head extends to the other side of the inclined plate and is fixedly connected to the pressure rod, the outer side of the sliding rod is fixedly connected to a pad, and a spring is sleeved on the outside of the sliding rod and located between the pad and the inclined plate; pressure sensors are fixedly installed on both sides of the mounting plate; the top of the inner side of the fixed frame is fixedly connected to an iron plate, and the top of the mounting plate is fixedly installed with an electromagnet used in conjunction with the iron plate.

[0013] By adopting the above technical solution, an anti-fall frame composed of two parallel U-shaped plates is set up, so that the guide rod cannot tilt sideways in the walking direction during walking; and pressure rods are symmetrically arranged on both sides of the guide rod. When the walking simulation component is in an upright posture, the support beam is in a horizontal state, and correspondingly, the pressure rod does not contact the inner side of the anti-fall frame; when the walking simulation component tilts in the front and rear directions, the pressure rod in the tilting direction contacts the anti-fall frame and provides auxiliary support, thereby preventing tilting.

[0014] A further improvement of the technical solution of the present invention lies in that: the driving simulation component includes a vehicle body, four wheels are arranged on the vehicle body, two belt strips are fixedly connected to the outer side of the conveyor belt of the belt conveyor line on which the driving simulation component is placed, a mounting frame is fixedly connected to the top of the belt conveyor line, and the wheels are placed on the belt strips; a limit rod is fixedly connected between the inner sides of the vehicle body, two limit frames are fixedly connected to one side of the mounting frame, and strip grooves are opened in the middle of the limit frames, the two limit frames are respectively in contact with the two sides of the inner wall of the vehicle body, and the limit rod passes through the two strip grooves at the same time; a bracket is fixedly connected to the top of the vehicle body, and a number of hooks are also symmetrically arranged on both sides of the bracket.

[0015] By adopting the above technical solution, the belt conveyor line is controlled to rotate so that the wheels placed on the conveyor belt rotate along with the belt strip, and the vehicle body is restrained by the limit rod and the limit frame and cannot move, but the vehicle body appears to be in a riding state, thereby simulating the state in the riding state; after a period of testing, the deformation in the simulation process can be reflected by observing the amount of testing liquid in the testing component squeezed upward along the suction tube.

[0016] A further improvement of the technical solution of the present invention is that: a support plate is fixedly connected to one side of the vehicle body, a screw is threadedly connected to the top of the support plate, the bottom of the screw extends to the bottom of the support plate and is rotatably connected to a frame plate, a pressure roller is rotatably connected between the inner sides of the frame plates, two guide rods are symmetrically slidably connected to the top of the support plate, the bottoms of the guide rods extend to the bottom of the support plate and are fixedly connected to the frame plate, a protrusion is provided on the conveyor belt connected to the belt strip, the pressure roller is in contact with the protrusion, and a number of round beads are fixedly connected to the outer surface of the protrusion.

[0017] By adopting the above technical solution, a protrusion and a ball are set on the conveyor belt. When it is necessary to simulate a bumpy environment, the screw is rotated to make it move downward relative to the support plate and drive the frame plate to move downward until the pressure roller contacts the protrusion. During the operation of the belt conveyor line, the protrusion moves along with the conveyor belt, so that the ball continuously squeezes the pressure roller, thereby causing the vehicle body to shake continuously.

[0018] A further improvement of the technical solution of the present invention is that the extrusion component includes a platform plate fixedly connected to the inside of the frame, the top of the platform plate is fixedly connected to a gantry, the top of the gantry is fixedly connected to a plurality of hydraulic cylinders, the output ends of the hydraulic cylinders extend to the inside of the gantry and are fixedly connected to a press frame, and a through groove is provided at the bottom of the press frame.

[0019] By adopting the above technical solution, through setting up an extrusion component, the pressure-bearing capacity of the blister box can be directly detected. When pressure is applied, the blister box is deformed but the internal gas does not leak, so that the detection liquid is squeezed into the suction tube until it ruptures or the box cover is detached. Subsequent extrusions will not cause the detection liquid to continue to be squeezed out, and the amount of detection liquid squeezed out is the deformation amount caused by the pressure when the rupture or the box cover is detached.

[0020] A further improvement of the technical solution of the present invention is that a hose is provided for the suction pipe, one end of the suction pipe away from the sampling pipe is connected to a weighted ball, and a through hole connected to the suction pipe is provided inside the weighted ball.

[0021] By adopting the above technical solution, the suction tube is set as a hose and a weighted ball is arranged at the end, so that the suction tube can provide sufficient displacement while ensuring that the end is located in the detection liquid.

[0022] The present invention also provides a method for testing the compression resistance of a food-grade environmentally friendly blister box, comprising the following steps: S1: Punch a hole in the center of the cover of the blister box and install the detection component on the hole in the center of the cover; S2: Add the test liquid to the blister box to be tested, and cover the box cover with the test components installed. The test liquid is a colored liquid, and the test liquid with a suitable temperature is selected according to the test requirements to form a control group; S3: Wrap the cling film between the blister box and the lid, with the number of wrappings being greater than two. Since the detection component is driven by the change in the internal pressure of the blister box during squeezing, the food blister box itself has a certain degree of sealing after the lid is closed. Wrapping the cling film at the sealing position can increase the sealing and reduce the situation where the blister box lid is separated from the blister box itself; S4: Place the blister box in an environment that needs to be simulated for testing, and observe the amount of test liquid collected by the test component within a set time. The test environment includes a driving simulation environment, a walking simulation environment, and a stacking pressure environment.

[0023] Due to the adoption of the above technical solution, the present invention has the following technical advances compared with the prior art: 1. The present invention provides a containing bag for placing blister boxes side by side, thereby simulating the extrusion state of the blister boxes in a take-out environment, thereby creating a horizontal pressure condition for the blister boxes; at the same time, a detection component is provided to feedback the deformation of the blister boxes, thereby reflecting the effect produced under the pressure; and a walking simulation component and a driving simulation component are provided to simulate the walking process and the riding process during the delivery process, thereby reflecting the objective conditions existing in the use of the food blister boxes and improving the objective authenticity of the detection.

[0024] 2. The present invention sets a special detection component. When the blister box is deformed or reset, the pressure in the blister box changes, so that the detection liquid is discharged into the display tube, so as to achieve "quantification" of the deformation. When the blister box contains the detection liquid, the detection liquid will be squeezed upward through the above-mentioned pipeline in turn. After the experiment is over, the total deformation amount generated in the simulated environment can be reflected by counting the amount of the detection liquid in the above-mentioned suction tube, sampling tube and display tube.

[0025] 3. The present invention provides a food-grade, environmentally friendly blister box compression resistance detection system and method. By setting an anti-fall frame composed of two parallel U-shaped plates, the guide rod cannot tilt sideways in the walking direction during walking; and pressure rods are symmetrically arranged on both sides of the guide rod. When the walking simulation component is in an upright posture, the support beam is in a horizontal state, and correspondingly, the pressure rod does not contact the inner side of the anti-fall frame; when the walking simulation component tilts toward the front and rear directions, the pressure rod in the tilting direction contacts the anti-fall frame and provides auxiliary support, thereby preventing the walking simulation component from tipping over.

[0026] 4. The present invention provides a protrusion with a ball on the driving simulation component. When it is necessary to simulate a bumpy environment, the screw is rotated to make it move downward relative to the support plate, and drive the frame plate to move downward until the pressure roller contacts the protrusion. During the operation of the belt conveyor line, the protrusion moves along with the conveyor belt, so that the ball continuously squeezes the pressure roller, thereby causing the vehicle body to continuously shake, thereby improving the objective reality of the test environment.

[0027] 5. The present invention can directly detect the pressure bearing capacity of the blister box by arranging an extrusion component. When pressure is applied, the blister box is deformed but the internal gas does not leak, so that the detection liquid is squeezed into the suction tube until it is broken or the box cover is detached. Subsequent squeezing will not cause the detection liquid to continue to be squeezed out, and the amount of the detection liquid squeezed out is the amount that reaches the point of breaking or the box cover being detached, thereby detecting the pressure resistance of the blister box. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described below in conjunction with the accompanying drawings.

[0029] Figure 1 It is a schematic diagram of the structure of the present invention from the first viewing angle as a whole; Figure 2 It is a schematic diagram of the structure of the second viewing angle of the whole invention; Figure 3 This is one of the structural schematic diagrams of the walking simulation component of the present invention; Figure 4 This is the second structural schematic diagram of the walking simulation component of the present invention; Figure 5 This is one of the structural schematic diagrams of the driving simulation component of the present invention; Figure 6 This is the second structural diagram of the driving simulation component of the present invention; Figure 7 It is a schematic diagram of the structure of the extrusion component of the present invention; Figure 8 It is a schematic diagram of the installation structure of the detection component of the present invention; Fig. 9 It is a schematic cross-sectional structural diagram of the detection component of the present invention; Fig.10 For the present invention Figure 4Enlarged view of point A in the middle; Fig.11 For the present invention Figure 4 Enlarged view of point B in the middle; Fig.12 For the present invention Figure 6 Enlarged view of point C in the middle; Fig.13 This is a schematic diagram of the blister boxes of the present invention being placed side by side into a containing bag.

[0030] In the figure: 1, frame; 2, detection plug; 201, inner pressing part; 202, tightening part; 203, screw grip; 3, U-shaped frame; 4, eccentric shaft; 5, motor; 6, handle; 7, vertical plate; 8, pedal; 9, support beam; 10, support arm; 11, bag; 12, fixed frame; 13, iron plate; 14, anti-fall frame; 15, guide rod; 16, mounting plate; 17, inclined plate; 18, slide rod; 19, pressure rod; 20, spring; 21, pressure head; 22, pressure sensor; 23, pad; 24, electromagnet; 2 5. Car body; 26. Wheel; 27. Belt strip; 28. Bracket; 29. ​​Limit rod; 30. Limit frame; 31. Strip groove; 32. Protrusion; 33. Ball; 34. Support plate; 35. Screw; 36. Frame plate; 37. Pressing roller; 38. Guide rod; 39. Punching device; 40. Belt conveyor line; 41. Suction pipe; 42. Intake pipe; 43. Display tube; 44. Counterweight ball; 45. Movable pressing ring; 46. Sampling tube; 47. Gantry; 48. Hydraulic cylinder; 49. Pressing frame; 50. Mounting frame. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below in conjunction with embodiments: Example 1 like Figure 1 and Figure 2 As shown, the present invention provides a food-grade environmentally friendly blister box compression resistance detection system, comprising: a frame 1, two belt conveyor lines 40 are installed inside the frame 1; a punching device 39, used to punch holes in the plastic blister box cover; a detection component, installed at the punching position on the blister box cover, used to detect the deformation of the blister box when it is squeezed; a walking simulation component, used to simulate the mutual squeezing environment of the blister boxes in the walking state; a driving simulation component, used to simulate the mutual squeezing environment of the blister boxes in the driving state of a vehicle; a holding bag 11, which is provided with a plurality of bags and is respectively suspended on the driving simulation component and the walking simulation component, and is used to hold two plastic blister boxes side by side; an extrusion component, used to apply a pressure environment to the blister box; the walking simulation component and the driving simulation component are respectively placed on the conveyor belts of the two belt conveyor lines 40.

[0032] In this embodiment, a containing bag 11 is provided to place blister boxes side by side, thereby simulating the extrusion state of the blister boxes in a take-out environment, thereby creating a horizontal pressure condition for the blister boxes; at the same time, a detection component is provided to feedback the deformation of the blister boxes, thereby reflecting the effect produced under the pressure; and a walking simulation component and a driving simulation component are provided to simulate the walking process and the riding process during the delivery process, thereby reflecting the objective conditions existing in the use of the food blister boxes and improving the objective authenticity of the detection.

[0033] like Figure 8 and Fig. 9 As shown, preferably, the detection component includes a detection plug 2 and a movable pressure ring 45, the lower part of the detection plug 2 is an inner pressing part 201, the middle part is a screwing part 202, and the upper part is a screw grip part 203, the outer wall of the screwing part 202 is threaded, and the movable pressure ring 45 is threadedly connected to the outer side of the screwing part 202, and the inner pressing part 201 and the movable pressure ring 45 are fixedly connected to the side close to the inner pressing part 201 and the movable pressure ring 45. A sealing ring is fixedly connected; a sampling tube 46 and an air inlet pipe 42 are fixedly inserted into the interior of the detection plug 2, and the sampling tube 46 and the air inlet pipe 42 both penetrate the detection plug 2 from top to bottom, and the top of the sampling tube 46 is connected to a display tube 43 through a detachable pipe joint, and the top of the display tube 43 is fixedly connected to a one-way valve, and the bottom of the sampling tube 46 is fixedly connected to a suction tube 41, and the display tube 43 is set as a transparent tube and the outer wall is set with scales; the bottom of the air inlet pipe 42 is fixedly connected to a one-way valve; the screw grip part 203 is set as a prism structure with equal bottom side lengths.

[0034] In the prior art, when performing compression testing on blister boxes, the deformation of the blister boxes or the pressure value applied when the blister boxes reach the rupture state is usually observed. This judgment requires direct observation of the state of the blister boxes, and food blister boxes are usually made of transparent materials, and the changes are usually not obvious enough. Therefore, it is difficult to timely reflect the timing of achieving the above-mentioned effect, and there are detection errors, especially based on the proposed method of placing two blister boxes in the holding bag 11 and simulating the effect of pressure under driving or walking. Since this effect is usually a process of repeated small deformation and recovery under repeated pressure, this process mainly requires measuring the repeated deformation amount within a certain period of time rather than reaching a certain deformation amount under a certain pressure. Therefore, it is impossible to count the tiny deformation amount in the process only by observation, and it is impossible to judge the detection structure; In this embodiment, a special detection component is provided, based on the case where a hole is punched on the box cover of the blister box to be detected, the detection plug is passed through the hole from bottom to top until the inner pressing part 201 is tightly fitted on the box cover, and then the movable pressing ring 45 is screwed on until the movable pressing ring 45 and the sealing ring on the inner pressing part 201 are pressed tightly on the box cover; the detection liquid is added to the blister box, and then the box cover is closed on the blister box, and multiple layers of plastic wrap are wrapped to increase the sealing between the blister box and the box cover; the inside and outside of the blister box are connected only through the above-mentioned detection component, and when the blister box is deformed or reset, the pressure in the blister box changes at the same time, so that the detection liquid is discharged into the display tube 43, so as to achieve "quantification" of deformation; specifically: the food blister box itself has a certain sealing performance after the box cover is put on, and the plastic wrap is wrapped around the sealing position, so as to increase the sealing performance and reduce the situation where the blister box cover is separated from the blister box itself. For the small deformation generated during the simulation process: when it is squeezed and deformed, since the box cover and the blister box cover are sealed, the air pressure will be discharged to the outside through the suction pipe 41, the sampling tube 46 and the display tube 43 (the one-way valve is turned on); and the blister box will rebound and return to its original state when it is not squeezed. In this process, the inside of the blister box is evacuated from the outside through the air inlet pipe 42 (the one-way valve is turned on), so as to balance the air pressure. When the blister box contains the test liquid, the test liquid will be squeezed upward through the above-mentioned pipelines in turn. After the experiment, the total deformation amount generated in the simulation environment can be reflected by counting the amount of the test liquid in the above-mentioned suction tube 41, the sampling tube 46 and the display tube 43 (due to the riding simulation environment and the walking simulation environment, the blister box will continue to deform slightly in the above two environments. This deformation cannot be directly captured and will not be maintained for a long time, so a detection component is set for measurement). Since the one-way valve at the top of the display tube 43 is only connected from the display tube 43 to the external environment, external gas cannot enter the display tube 43 through the one-way valve, so that the test liquid squeezed out during the test will not flow back into the blister box.

[0035] Example 2 like Figure 3 , Figure 4 and Fig.11As shown, on the basis of Example 1, the present invention provides a technical solution: preferably, the walking simulation component includes a U-shaped frame 3, two eccentric shafts 4 are rotatably connected between the inner sides of the U-shaped frame 3, both ends of the eccentric shaft 4 extend to the two sides of the U-shaped frame 3 respectively and are fixedly connected with a turning handle 6, a vertical plate 7 is rotatably connected between the turning handles 6 located on the same side of the U-shaped frame 3, and a pedal 8 is fixedly connected to the bottom of the vertical plate 7 for increasing the contact area with the supporting surface during walking, thereby increasing the walking stability, and the pedal 8 is placed on one of the belt conveyor lines 40; a support beam 9 is fixedly connected to the top of the U-shaped frame 3, and a supporting arm 10 is fixedly connected to both sides of the support beam 9, and a plurality of hooks for hanging bags 11 are fixedly connected to the bottom of the supporting arm 10; a motor 5 is fixedly installed on one side of the inner wall of the U-shaped frame 3, and the output end of the motor 5 is connected to the two eccentric shafts 4 through a synchronous belt and a synchronous wheel transmission.

[0036] In this embodiment, by controlling the motor 5 to work, the two eccentric shafts 4 are driven to rotate, thereby driving the handle 6 to rotate. The handles 6 located on both sides of the U-shaped frame 3 are parallel to each other and in opposite directions (the eccentric shaft is not connected to the center of the handle 6, and the handles 6 on both sides are symmetrically distributed around the center). The two handles 6 on each side jointly drive a vertical plate 7 to rotate around the eccentric shaft 4, and the rotation process is vertically downward. The two vertical plates 7 cooperate to simulate walking movements. There are multiple groups of hooks symmetrically arranged on the supporting arm 10 to facilitate simultaneous testing of multiple groups of experiments. The test process can be compared by setting variables: the test liquid temperature is the same but the blister box material is different and the blister box material is the same but the test liquid temperature is different. However, if the above structure is only set to simulate walking action, after a period of operation, the above structure will produce a certain displacement. In order to reduce the span of the overall setting of the device, the above structure is set on one of the belt conveyor lines 40, so that the walking simulation process is carried out similar to a treadmill.

[0037] like Figure 3 , Figure 4 and Fig.10As shown, preferably, the top of the belt conveyor line 40 on which the walking simulation component is placed is fixedly connected to a fixed frame 12, and the top of the inner side of the fixed frame 12 is fixedly connected to two anti-falling frames 14, and the anti-falling frame 14 is composed of two parallel U-shaped plates, and there is a gap between the two U-shaped plates. The top of the support beam 9 is fixedly connected to two guide rods 15, and the top ends of the two guide rods 15 pass through the gaps on the two anti-falling frames 14 respectively and are fixedly connected to a mounting plate 16, and the two sides of the guide rods 15 are symmetrically fixedly connected to inclined plates 17, and one side of the inclined plate 17 slides A slide rod 18 is connected, one end of the slide rod 18 is fixedly connected to a pressure head 21, one end of the slide rod 18 away from the pressure head 21 extends to the other side of the inclined plate 17 and is fixedly connected to a pressure rod 19, the outer side of the slide rod 18 is fixedly connected to a pad 23, and a spring 20 is sleeved on the outside of the slide rod 18 and located between the pad 23 and the inclined plate 17; pressure sensors 22 are fixedly installed on both sides of the mounting plate 16; the top of the inner side of the fixing frame 12 is fixedly connected to the iron plate 13, and the top of the mounting plate 16 is fixedly installed with an electromagnet 24 used in conjunction with the iron plate 13.

[0038] Since the test simulation process is to simulate the hand-held bag 11 and perform walking movements, and since the blister box contains the test liquid and has a certain weight, the bag 11 will shake during the movement, causing the walking structure to be at risk of tipping over.

[0039] In this embodiment, an anti-fall frame 14 composed of two parallel U-shaped plates is provided to prevent the guide rod 15 from tipping sideways in the walking direction during walking (but there is still a possibility of tipping forward and backward in the walking direction); and pressure rods 19 are symmetrically provided on both sides of the guide rod 15. When the walking simulation component is in an upright posture, the support beam 9 is in a horizontal state, and correspondingly, the pressure rod 19 does not contact the inner side of the anti-fall frame 14; when the walking simulation component tips forward and backward, the pressure rod 19 in the tipping direction contacts the anti-fall frame 14 and provides auxiliary support, thereby preventing tipping; On the one hand, when a tilt that cannot be automatically restored occurs, the pressure rod 19 bears the tilt pressure of the component, pushes the slide bar 18 to move, and squeezes the spring 20. On the one hand, the spring 20 provides a buffer, and on the other hand, it can provide a restoring elastic force; when the tilt reaches a certain degree, the slide bar 18 pushes the pressure head 21 to press the pressure sensor 22. When the pressure sensor 22 detects the pressure change and transmits it to the external controller, the controller controls the electromagnet 24 to be energized, thereby generating a magnetic force relative to the iron plate 13, providing an upward force for the walking simulation component to assist it in restoring.

[0040] Example 3 like Figure 5 and Figure 6As shown, on the basis of Example 2, the present invention provides a technical solution: preferably, the driving simulation component includes a vehicle body 25, four wheels 26 are arranged on the vehicle body 25, two belt strips 27 are fixedly connected to the outer side of the conveyor belt of the belt conveyor line 40 on which the driving simulation component is placed, and a mounting frame 50 is fixedly connected to the top of the belt conveyor line 40, and the wheels 26 are placed on the belt strips 27; a limit rod 29 is fixedly connected between the inner sides of the vehicle body 25, and two limit frames 30 are fixedly connected to one side of the mounting frame 50, and a strip groove 31 is opened in the middle of the limit frames 30, and the two limit frames 30 are respectively in contact with the two sides of the inner wall of the vehicle body 25, and the limit rod 29 passes through the two strip grooves 31 at the same time; a bracket 28 is fixedly connected to the top of the vehicle body 25, and a plurality of hooks are also symmetrically arranged on both sides of the bracket 28.

[0041] In this embodiment, by controlling the operation of the belt conveyor line 40, the wheels 26 placed on the conveyor belt rotate along with the belt strip 27, and the vehicle body 25 is restrained by the limit rod 29 and the limit frame 30 and cannot move, but the vehicle body 25 presents a state similar to riding, thereby being able to simulate the state in the riding state; after a period of testing, the deformation in the simulation process can be reflected by observing the amount of testing liquid in the testing component squeezed upward along the suction tube 41.

[0042] like Figure 6 and Fig.12 As shown, preferably, a support plate 34 is fixedly connected to one side of the vehicle body 25, a screw rod 35 is threadedly connected to the top of the support plate 34, the bottom of the screw rod 35 extends to the bottom of the support plate 34 and is rotatably connected to a frame plate 36, a pressure roller 37 is rotatably connected between the inner sides of the frame plate 36, two guide rods 38 are symmetrically slidably connected to the top of the support plate 34, the bottoms of the guide rods 38 extend to the bottom of the support plate 34 and are fixedly connected to the frame plate 36, a protrusion 32 is provided on the conveyor belt connected to the belt strip 27, the pressure roller 37 is in contact with the protrusion 32, and a plurality of round beads 33 are fixedly connected to the outer surface of the protrusion 32.

[0043] However, in real life, the road surface is usually not as smooth as expected and is often bumpy. Therefore, the above simulated driving alone cannot objectively reflect the riding environment. In this embodiment, a protrusion 32 and a ball 33 are provided on the conveyor belt. When a bumpy environment needs to be simulated, the screw 35 is rotated to move downward relative to the support plate 34, and the frame plate 36 is driven to move downward until the pressure roller 37 contacts the protrusion 32. During the operation of the belt conveyor line 40, the protrusion 32 moves along with the conveyor belt, so that the ball 33 continuously squeezes the pressure roller 37, thereby causing the vehicle body 25 to shake continuously.

[0044] Example 4 like Figure 1 and Figure 7As shown, on the basis of Example 3, the present invention provides a technical solution: preferably, the extrusion component includes a platform plate fixedly connected to the inside of the frame 1, the top of the platform plate is fixedly connected to a gantry 47, the top of the gantry 47 is fixedly connected to a plurality of hydraulic cylinders 48, the output end of the hydraulic cylinder 48 extends to the inside of the gantry 47 and is fixedly connected to a press frame 49, and a through groove is provided at the bottom of the press frame 49.

[0045] Based on this solution, a detection component is set to reflect the process of the blister box being compressed and deformed. Based on the above design, it is still applicable to traditional detection devices and can provide more intuitive feedback on the deformation.

[0046] In the present embodiment, by providing an extrusion component, the pressure bearing capacity of the blister box can be directly detected. Specifically, after the detection component is installed, the bottom groove of the pressure frame 49 is pressed downwardly against the detection component (the box cover and the blister box fit more tightly and the sealing is better during the pressing process) until the blister box ruptures or collapses. The pressure resistance limit of the blister box can be obtained by observing the force applied when it ruptures or collapses, and the amount of detection liquid squeezed upward from the suction tube 41 can reflect the pressure when the blister box reaches rupture or causes its box cover to be detached (large deformation occurs): when pressure is applied, the blister box is deformed but the internal gas does not leak, so that the detection liquid is squeezed into the suction tube 41 until it ruptures or the box cover is detached, and subsequent squeezing will not cause the detection liquid to continue to be squeezed out, and the amount of detection liquid squeezed out is the deformation amount caused by the pressure when the blister box is ruptured or the box cover is detached.

[0047] like Figure 8 and Fig. 9 As shown, preferably, the suction pipe 41 is provided with a hose, and one end of the suction pipe 41 away from the sampling tube 46 is connected to a weighted ball 44 , and a through hole communicating with the suction pipe 41 is provided inside the weighted ball 44 .

[0048] Since the above-mentioned extrusion component is required for testing, the blister box needs to withstand pressure from top to bottom during the testing process, and the suction tube 41 needs to reserve a displacement in the vertical direction, while it cannot be too short, otherwise it cannot contact the testing liquid; In this embodiment, the suction tube 41 is configured as a hose and a weighted ball 44 is disposed at the end thereof, so that the suction tube 41 can provide a sufficient displacement while ensuring that the end thereof is located in the detection liquid.

[0049] In addition, during the extrusion process, when the blister box leaks due to extrusion, the detection liquid cannot be collected by the above-mentioned detection component, which reflects the problem of the sealing performance of the blister box during the compression process.

[0050] The present invention also provides a method for testing the compression resistance of a food-grade environmentally friendly blister box, comprising the following steps: S1: Punch a hole in the center of the cover of the blister box and install the detection component on the hole in the center of the cover; S2: Add the test liquid to the blister box to be tested, and cover the box with the test components installed; Among them, the detection liquid is a colored liquid, and the detection liquid of suitable temperature is selected according to the test needs to form a control group; S3: Wrap the plastic wrap between the blister box and the lid, with the number of wrappings being more than two; Since the detection process relies on the change in internal pressure of the blister box when squeezed to drive the detection component to move, the food blister box itself has a certain degree of sealing after the box cover is closed, and then by wrapping the plastic wrap at the sealing position, the sealing is increased and the blister box cover is reduced. The detachment of the blister box itself is reduced; S4: Place the blister box in the environment to be simulated for testing, and observe the amount of test liquid collected by the test component within the set time; Among them, the detection environment includes a driving simulation environment, a walking simulation environment and a stacking pressure environment.

[0051] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A food-grade environmentally friendly blister box compression testing system, characterized in that: include: A frame (1), wherein two belt conveyor lines (40) are installed inside the frame (1); A punching device (39) for punching holes in the plastic blister box cover; The detection component is installed at the punching position on the blister box cover and is used to detect the deformation of the blister box when it is squeezed; Walking simulation component, used to simulate the mutual squeezing environment of blister boxes in walking state; Driving simulation components, used to simulate the vehicle driving state blister boxes squeeze each other environment; A plurality of containing bags (11) are provided and are respectively hung on the driving simulation component and the walking simulation component, and are used to contain two plastic blister boxes side by side; An extrusion component is used to apply a pressure environment to the blister box; The walking simulation component and the driving simulation component are respectively placed on the conveyor belts of two belt conveyor lines (40).

2. The food-grade environmentally friendly blister box compression testing system according to claim 1 is characterized by: The detection component comprises a detection plug (2) and a movable pressing ring (45); the lower part of the detection plug (2) is an inner pressing part (201), the middle part is a screwing part (202), and the upper part is a screwing part (203); the outer wall of the screwing part (202) is threaded, and the movable pressing ring (45) is threadedly connected to the outer side of the screwing part (202); the inner pressing part (201) and the movable pressing ring (45) are both fixedly connected to a sealing ring on one side thereof; a sampling tube (46) and an air inlet pipe (42) are fixedly plugged into the interior of the detection plug (2). ), the sampling tube (46) and the air inlet pipe (42) both penetrate the detection plug (2) from top to bottom; the top of the sampling tube (46) is connected to a display tube (43) via a detachable pipe joint; the top of the display tube (43) is fixedly connected to a one-way valve; the bottom of the sampling tube (46) is fixedly connected to a suction tube (41); the display tube (43) is configured as a transparent tube and has a scale on its outer wall; the bottom of the air inlet pipe (42) is fixedly connected to a one-way valve; and the rotary grip (203) is configured as a prism structure with equal bottom side lengths.

3. The food-grade environmentally friendly blister box compression testing system according to claim 2 is characterized by: The walking simulation component comprises a U-shaped frame (3), two eccentric shafts (4) are rotatably connected between the inner sides of the U-shaped frame (3), two ends of the eccentric shafts (4) respectively extend to the two sides of the U-shaped frame (3) and are fixedly connected to a rotating handle (6), a vertical plate (7) is rotatably connected between the rotating handles (6) located on the same side of the U-shaped frame (3), the bottoms of the vertical plates (7) are fixedly connected to a pedal (8), and the pedal (8) is placed on one of the belt conveyor lines (40); a support beam (9) is fixedly connected to the top of the U-shaped frame (3), a material support arm (10) is fixedly connected to both sides of the support beam (9), and a plurality of hooks for hanging bags (11) are fixedly connected to the bottom of the material support arm (10); a motor (5) is fixedly installed on one side of the inner wall of the U-shaped frame (3), and the output end of the motor (5) is connected to the two eccentric shafts (4) through a synchronous belt and a synchronous wheel transmission.

4. The food-grade environmentally friendly blister box compression testing system according to claim 3 is characterized by: The top of the belt conveyor line (40) on which the walking simulation component is placed is fixedly connected to a fixed frame (12), and the top of the inner side of the fixed frame (12) is fixedly connected to two anti-fall frames (14), and the anti-fall frames (14) are composed of two parallel U-shaped plates, and there is a gap between the two U-shaped plates. The top of the support beam (9) is fixedly connected to two guide rods (15), and the top ends of the two guide rods (15) respectively pass through the gaps on the two anti-fall frames (14) and are fixedly connected to a mounting plate (16). The two sides of the guide rods (15) are symmetrically fixedly connected to inclined plates (17), and one side of the inclined plate (17) is slidably connected to a sliding rod (18). One end of the slide bar (18) is fixedly connected to a pressure head (21), one end of the slide bar (18) away from the pressure head (21) extends to the other side of the inclined plate (17) and is fixedly connected to a pressure rod (19), the outer side of the slide bar (18) is fixedly connected to a pad (23), and a spring (20) is sleeved outside the slide bar (18) and located between the pad (23) and the inclined plate (17); pressure sensors (22) are fixedly installed on both sides of the mounting plate (16); the top of the inner side of the fixing frame (12) is fixedly connected to an iron plate (13), and the top of the mounting plate (16) is fixedly installed with an electromagnet (24) used in conjunction with the iron plate (13).

5. The food-grade environmentally friendly blister box compression testing system according to claim 4 is characterized by: The driving simulation component comprises a vehicle body (25), on which four wheels (26) are arranged; two belt strips (27) are fixedly connected to the outer side of the conveyor belt of the belt conveyor line (40) on which the driving simulation component is placed; a mounting frame (50) is fixedly connected to the top of the belt conveyor line (40), and the wheels (26) are placed on the belt strips (27); a limiting rod (29) is fixedly connected to the inner side of the vehicle body (25); two limiting frames (30) are fixedly connected to one side of the mounting frame (50); a strip groove (31) is opened in the middle of each limiting frame (30); the two limiting frames (30) are respectively in contact with two sides of the inner wall of the vehicle body (25), and the limiting rod (29) passes through the two strip grooves (31) at the same time; a bracket (28) is fixedly connected to the top of the vehicle body (25), and a plurality of hooks are symmetrically arranged on both sides of the bracket (28).

6. The food-grade environmentally friendly blister box compression testing system according to claim 5, characterized in that: A support plate (34) is fixedly connected to one side of the vehicle body (25); a screw rod (35) is threadedly connected to the top of the support plate (34); the bottom of the screw rod (35) extends to the bottom of the support plate (34) and is rotatably connected to a frame plate (36); a pressure roller (37) is rotatably connected between the inner sides of the frame plate (36); two guide rods (38) are symmetrically slidably connected to the top of the support plate (34); the bottoms of the guide rods (38) extend to the bottom of the support plate (34) and are fixedly connected to the frame plate (36); a protrusion (32) is provided on the conveyor belt connected to the belt strip (27); the pressure roller (37) is in contact with the protrusion (32); and a plurality of round beads (33) are fixedly connected to the outer surface of the protrusion (32).

7. The food-grade environmentally friendly blister box compression testing system according to claim 6, characterized in that: The extrusion component comprises a platform plate fixedly connected to the inside of the frame (1); the top of the platform plate is fixedly connected to a gantry (47); the top of the gantry (47) is fixedly connected to a plurality of hydraulic cylinders (48); the output ends of the hydraulic cylinders (48) extend to the inside of the gantry (47) and are fixedly connected to a pressing frame (49); a through groove is provided at the bottom of the pressing frame (49).

8. The food-grade environmentally friendly blister box compression testing system according to claim 7, characterized in that: The suction pipe (41) is provided with a hose, and one end of the suction pipe (41) away from the sampling tube (46) is connected to a weight ball (44), and a through hole communicating with the suction pipe (41) is provided inside the weight ball (44).

9. A method for testing the compression resistance of food-grade environmentally friendly blister boxes, characterized in that: The food-grade environmentally friendly blister box compression test system applicable to any one of claims 1 to 8 above comprises the following steps: S1: Punch a hole in the center of the cover of the blister box and install the detection component on the hole in the center of the cover; S2: Add the test liquid to the blister box to be tested, and cover the box with the test components installed; S3: Wrap the plastic wrap between the blister box and the lid, with the number of wrappings being more than two; S4: Place the blister box in the environment to be simulated for testing, and observe the amount of test liquid collected by the test component within the set time.

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