A closure performance testing system for paper packaging boxes

Abstract

The present invention relates to the technical field of paper packaging box performance testing, and in particular to a sealing performance testing system for paper packaging boxes, which solves the shortcomings existing in the prior art, and includes a base, a feeding mechanism and a testing mechanism, wherein a control terminal with a PLC controller is installed on the base, and two sets of fixed components are also installed on the base, and an adjustment plate is slidably arranged between the fixed components on both sides, and the feeding mechanism includes a conveying track 1 and a conveying track 2, and a conveying belt and a carton moving along the length direction of the conveying track 1 are also arranged on the conveying track 1, and a baffle rod that can be adjusted back and forth by 90 degrees and a push plate for pushing the carton for testing are also arranged on the conveying track 1, and a testing port is opened on the conveying track 2, and a lifting plate with adjustable height is arranged in the testing port along the vertical direction. Compared with the prior art, the present invention can better and more comprehensively perform relevant tests on the sealing performance of the adhesive tape strip on the carton.

Description

Technical Field

[0001] The present invention relates to the technical field of paper packaging box performance testing, and in particular to a sealing performance testing system for paper packaging boxes. Background Art

[0002] As the most widely used packaging product, cartons have become an indispensable part of modern logistics, shouldering the important responsibility of containing and protecting products. Common cartons include corrugated boxes, single-layer cardboard boxes, etc.

[0003] Usually after the product is packed, the top two sides of the carton will be covered with cardboard and then taped together along the center line to prevent the product from falling out of the box. However, in daily life, we will find that sometimes the tape on the carton will separate from the carton due to careless pressing. Moreover, especially during transportation, the carton is affected by road bumps, which can easily lead to the top cover of the carton being opened due to loose closure, and the items being lost or damaged. Therefore, it is also extremely important to test the closure performance of the carton.

[0004] Therefore, it is necessary to provide a closure performance testing system for paper packaging boxes, which can achieve the purpose of detecting the closure performance of the carton. Summary of the invention

[0005] The object of the present invention is to provide a sealing performance testing system for a paper packaging box to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A sealing performance testing system for a paper packaging box comprises a base, a feeding mechanism and a testing mechanism, wherein a control terminal with a PLC controller is installed on the base, and two sets of fixing components are also installed on the base, and an adjustment plate is slidably arranged between the fixing components on both sides;

[0008] The feeding mechanism includes a conveying track 1 and a conveying track 2. A conveying belt and cartons moving along the length direction of the conveying track 1 are also arranged on the conveying track 1. A baffle bar that can be adjusted back and forth by 90 degrees and a push plate for pushing cartons for inspection are also arranged on the conveying track 1. A detection port is opened on the conveying track 2. A lifting plate with adjustable height is arranged in the detection port in the vertical direction. A limit strip is installed on one side of the detection port on the conveying track 2 to limit the pushing position of the cartons.

[0009] The testing mechanism includes two adjustment boxes and a pressure roller movable below the adjustment boxes;

[0010] A bottom groove is provided on the bottom surface of the adjustment plate, and a rack is also installed in the bottom groove. Two adjustment boxes are slidably arranged along the inner wall of the bottom groove. The adjustment box has a cavity structure. A position adjustment component and an angle adjustment component are respectively arranged on both sides of the interior of the adjustment box. The position adjustment component includes a gear 1, which is meshed with the rack. The angle adjustment component includes a synchronous wheel 1, and a switching drive component is also arranged between the position adjustment component and the angle adjustment component. A gear 2 meshed with the gear is arranged on one side of the switching drive component, and a displacement component moving along the length direction of the adjustment box is also arranged on the other side of the switching drive component. The displacement component is connected to the switching drive component and will not affect the movement state of the switching drive component. The two ends of the switching drive component can be connected to the position adjustment component and the angle adjustment component respectively, so as to drive and control one of the two separately. A cam member and a synchronous wheel 2 connected as one body are rotatably arranged at the bottom of the adjustment box. The synchronous wheel 1 and the synchronous wheel 2 are synchronized by a synchronous track connection, and a pressure roller is installed on one end of the cam member.

[0011] In one embodiment, the conveying track 1 is arranged vertically to the conveying track 2, the conveying belt is installed in the direction of the conveying track 1 toward the conveying track 2, and a plurality of conveying rollers are installed on both sides of the conveying belt, the conveying rollers are rotatably arranged between the side walls of the conveying track 1, and the conveying direction of the conveying belt is consistent with the conveying direction of the conveying rollers;

[0012] A fixing seat is installed on the conveying track 1 by screws, one end of the blocking rod is rotatably arranged in the middle of the fixing seat, and at least two contact sensors 1 are embedded on one side surface of the blocking rod, and the contact sensor 1 is connected to the PLC controller by an electrical signal;

[0013] A groove one matched with the push plate is provided on the side wall of the conveying track one facing the conveying track two, an electric push rod one is installed on one side of the groove one on the side wall of the conveying track one, and two electric suction cups are embedded on one side wall of the push plate, and the electric suction cups are connected to the PLC controller through electrical signals.

[0014] In one embodiment, one groove 2 and two oppositely arranged grooves 3 are respectively provided on the inner walls of three sides of the detection port, and a positioning plate 1 and a positioning plate 2 adapted thereto are respectively provided in the groove 2 and the groove 3;

[0015] The cross section of the lifting plate is consistent with the shape and size of the detection port, and the bottom of the lifting plate is equipped with an electric cylinder connected to it on the base, and four lifting columns are also connected to the bottom wall of the lifting plate through threads, and a limit ring is installed on the outer wall of the lifting column;

[0016] When the carton pushed onto conveying track 2 contacts the limit bar, the lifting plate begins to descend due to the height flush with the upper surface of conveying track 2 and stops when the limit ring contacts the base. At this time, the carton is located in the detection port and can be fixed in the detection port by the cooperation of positioning plate 1 and positioning plate 2.

[0017] In one embodiment, the fixing assembly includes a fixing frame, a lifting block and a fixing rod;

[0018] The fixing frame is arranged in a "U"-shaped structure, and the bottom of the fixing frame is fixedly mounted on the base, vertical grooves are provided on both side walls of the fixing frame, and lifting blocks are slidably arranged between the inner walls of the vertical grooves, and a screw rod which is threadedly matched with the lifting blocks penetrates the inside of the lifting blocks, and the screw rod is rotatably arranged between the top wall and the bottom wall of the vertical groove, and the fixing rod is installed between the two lifting blocks on the same fixing frame through a threaded connection;

[0019] The adjusting plate slides between the fixing rods on both sides, and the adjusting plate and the fixing rods are connected as a whole through fastening screws.

[0020] In one embodiment, the position adjustment assembly further includes an electromagnetic lock body 1, a shaft 1 and a shaft sleeve 1;

[0021] One end of the shaft 1 penetrates the electromagnetic lock body 1 and is rotatably arranged on the inner wall of one end of the adjustment box. The electromagnetic lock body 1 is fixed to the inner wall of the adjustment box by screws. The shaft sleeve 1 is fixedly installed on the other end of the shaft 1 by screws. The gear 1 is installed on the shaft 1 by key connection. When current flows through the electromagnetic lock body 1, the shaft 1 cannot rotate. Otherwise, the shaft 1 can rotate.

[0022] The angle adjustment assembly also includes a second shaft, a second shaft sleeve and a second electromagnetic lock body;

[0023] One end of the second shaft penetrates the second electromagnetic lock body and is rotatably arranged on the inner wall of the other end of the adjustment box. The second electromagnetic lock body is fixed in the adjustment box by screws. The second shaft sleeve is fixedly installed on the other end of the second shaft by screws. The first synchronous wheel is installed on the second shaft by key connection. When current flows through the second electromagnetic lock body, the second shaft cannot rotate. On the contrary, the first shaft can rotate.

[0024] Among them, external power supplies are installed on the inner walls on both sides opposite to each other in the adjustment box. The two external power supplies are respectively connected to the electromagnetic lock body 1 and the electromagnetic lock body 2 through wires, and the external power supplies are connected to the PLC controller through electrical signals.

[0025] In one embodiment, the switching drive assembly includes a drive member of a shaft-like structure and a spline shaft;

[0026] The driving member moves between the shaft sleeve 1 and the shaft sleeve 2 along the length direction of the adjustment box, and a plurality of strip-shaped tooth grooves are evenly opened on the outer wall of the driving member. The gear 2 is meshed with the tooth groove, and the transmission ratio between the driving member and the gear 2 is 1:1. A rotating motor 5 is connected to one side of the gear 2, and the rotating motor 5 is fixed in the adjustment box by screws. Connection grooves are also opened on the outer wall of the driving member on both sides of the tooth groove;

[0027] A keyway is provided on one end of the first and second shaft sleeves facing the driving member, the spline shaft penetrates the driving member handle and is connected to the driving member handle as a whole, and the keyway is adapted to the spline shaft;

[0028] When gear two contacts one end of the tooth groove near sleeve one, one end of the spline shaft is connected to sleeve two as a whole, and shaft one cannot rotate at this time. When gear two contacts one end of the tooth groove near sleeve two, the other end of the spline shaft is connected to sleeve one as a whole, and shaft two cannot rotate at this time.

[0029] In one embodiment, the displacement assembly includes a moving member and a connecting ring;

[0030] A push rod motor is fixedly installed on the inner wall on the other side of the adjusting box. The moving part moves linearly along the inner wall of the adjusting box, and one end of the moving part is fixedly connected to the push rod end of the push rod motor. The moving part is arranged in a rectangular structure. Two connecting rings are installed on the moving part by shaft welding. The two connecting rings are respectively sleeved in the connecting grooves on both sides, and the connecting rings and the connecting grooves can be rotatably arranged.

[0031] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0032] By arranging structures such as a position adjustment component, an angle adjustment component, a switching drive component, and a displacement component in the adjustment box, the linear displacement motion of the moving part is used to control the linear motion of the driving part and the spline shaft, so that the two ends of the spline shaft can be connected to the sleeve one and the sleeve two respectively, so that when the spline shaft is connected to the sleeve one, the position of the adjustment box can be adjusted indirectly through the drive of the gear two, thereby changing the different downward pressure point positions of the pressure roller, and when the spline shaft is connected to the sleeve two, it is driven by the gear two and the transmission effect between the synchronous wheel one and the synchronous wheel two is used, so that the synchronous wheel two can drive the cam part and the pressure roller to change at different angles, thereby changing the different downward pressure intensity changes at different downward pressure point positions. Therefore, the present invention can better and more comprehensively test the sealing performance of the tape strip on the carton. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The technical solution and other beneficial effects of the present application will be made apparent by describing in detail the specific implementation methods of the present application in conjunction with the accompanying drawings.

[0034] In the attached picture:

[0035] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0036] Figure 2 yes Figure 1 A schematic diagram of the structure from another perspective;

[0037] Figure 3 It is a schematic diagram of the installation of the feeding mechanism of the present invention;

[0038] Figure 4 yes Figure 3 Schematic diagram of local A in the middle;

[0039] Figure 5 yes Figure 3 Schematic diagram of top view;

[0040] Figure 6 yes Figure 5 Schematic diagram of the local B in the middle;

[0041] Figure 7 yes Figure 3 A right side schematic diagram of

[0042] Figure 8 It is a schematic diagram of the installation of the fixing assembly and the adjustment plate of the present invention;

[0043] Fig. 9 yes Figure 8 Schematic diagram from top view;

[0044] Fig.10 is a schematic diagram of a testing mechanism of the present invention;

[0045] Fig.11 is a schematic diagram of the testing mechanism of the present invention from another perspective (excluding the fixing piece and the limiting block);

[0046] Fig.12 yes Fig.11 Schematic diagram of the structure inside the regulating box.

[0047] In the figure: 1. Base; 11. Control terminal; 12. Conveyor track 1; 121. Conveyor belt; 122. Conveyor roller; 123. Push plate; 124. Electric suction cup; 125. Slot 1; 126. Synchronous belt; 127. Roller; 13. Conveyor track 2; 131. Positioning plate 1; 132. Positioning plate 2; 133. Limiting strip; 134. Slot 2; 135. Slot 3; 2. Fixed seat; 21. Stop rod; 211. Contact sensor 1; 3. Fixed assembly; 31. Fixed frame; 32. Screw; 33. Lifting block; 34. Fixed rod; 4. Adjustment plate; 41. Bottom slot ;42. rack;5. lifting plate;51. electric cylinder;52. lifting column;521. limit ring;6. adjustment box;61. protrusion;62. fixing plate;621. limit block;63. electromagnetic lock body one;64. shaft one;641. gear one;642. sleeve one;65. gear two;66. driving part;661. spline shaft;67. moving part;671. connecting ring;68. shaft two;681. synchronous wheel one;682. sleeve two;69. electromagnetic lock body two;7. cam part;71. pressure roller;72. synchronous wheel two;73. touch sensor;8. carton. DETAILED DESCRIPTION

[0048] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the various specific processes and material examples provided by the present application, but those of ordinary skill in the art can appreciate the application of other processes and / or the use of other materials.

[0049] like Figure 1-2 As shown, the present invention provides a technical solution: a closing performance test system for a paper packaging box, comprising a base 1, a feeding mechanism and a testing mechanism. A control terminal 11 for controlling the operation of the entire system is installed at one end of the base 1. The control terminal 11 implements various program controls by a built-in PLC controller. The feeding mechanism is installed on the base 1 and is arranged in a "T"-shaped structure. The carton 8 can be randomly inspected through the system setting, and the randomly inspected carton 8 is sent to the inspection station. The testing mechanism is installed above the inspection station, and the sealing performance of the tape seal on the carton 8 is detected by adjusting the different positions of the downward pressure point and the strength of the downward pressure.

[0050] like Figure 1-7As shown, the feeding mechanism includes a conveying track 12 arranged along the length direction of the base 1 and a conveying track 2 13 arranged along the width direction of the base 1, the conveying track 12 is connected to the conveying track 2 13, and a conveying belt 121 with a belt weighing sensor is installed in the direction of the conveying track 12 toward the conveying track 2 13 (the working principle of the belt weighing sensor is: when the material runs on the belt conveyor, the belt will produce a slight deformation due to the weight of the material, and this deformation will be converted into a change in resistance or capacitance through the strain gauge installed on the belt, and then generate an electrical signal), the conveying direction of the conveying belt 121 is consistent with the conveying direction of the conveying track 12, and the conveying belt 121 is connected to the conveying track 12. On one side of the belt 121, two rotating motors 2 are installed on the outer wall of the conveying track 12 by bolts to drive it to operate. On both sides of the conveying belt 121, a number of conveying rollers 122 are rotatably arranged between the side walls of the conveying track 12, and two rotating motors 1 are installed on the outer wall of the conveying track 12 by bolts. Roller shafts 127 are connected to both ends of the conveying rollers 122. The roller shafts 127 are rotatably arranged between the inner walls of the conveying track 12 through bearings. The two rotating motors 1 are respectively connected to the two roller shafts 127 on the two sides for driving, and the remaining adjacent roller shafts 127 on both sides are connected and synchronized by synchronous belts 126, so that the rotating motor 1 controls the synchronous operation of multiple conveying rollers 122.

[0051] A U-shaped fixing seat 2 is also installed on the conveying track 12 by screws, a rotating motor 3 is installed on the outer wall of one side of the fixing seat 2 by screws, and a stopper 21 is rotatably arranged in the middle of the fixing seat 2, one end of the stopper 21 is connected and fixed to the rotating motor 3 by an axis, and the stopper 21 is arranged to rotate 90 degrees reciprocatingly, and at least two contact sensors 211 are embedded on the surface of one side of the stopper 21 facing the carton 8, and the contact sensor 211 is connected to the PLC controller by an electrical signal.

[0052] A groove 125 is provided on the side wall of the conveying track 12 facing the conveying track 2 13, and a push plate 123 adapted thereto is provided in the groove 125. An electric push rod 1 is installed on one side of the push plate 123 on the outer wall of the conveying track 12 by bolts, and the end of the electric push rod 1 is bonded to one side wall of the push plate 123, and two electric suction cups 124 are embedded on the other side wall of the push plate 123. The electric suction cup 124 is connected to the PLC controller by an electrical signal.

[0053] It should be further explained that the cartons 8 are placed on the conveying rollers 122 for conveying. According to the setting of the system, the blocking lever 21 is controlled to rotate from the vertical direction to the horizontal direction at a timing. Figure 1As shown, at this time, after the carton 8 moves to contact with the blocking rod 21, the contact sensor 211 on the blocking rod 21 is triggered. At this time, the conveyor belt 121 and the conveyor roller 122 are both suspended. At the same time, the electric suction cup 124 and the electric push rod 1 are started at the same time, so that the carton 8 is sucked by the electric suction cup 124 on the push plate 123 and moves to the side where the conveying track 2 13 is located with the push plate 123. When the carton 8 is sent to the inspection station, the electric suction cup 124 stops, and the electric push rod 1 is reset. After the electric push rod 1 is reset, the rotating motor 3 also drives the blocking rod 21 to reset to the vertical upward direction under the action of the PLC controller.

[0054] During this process, the belt weighing sensor on the conveyor belt 121 is used to detect the weight on the conveyor belt 121 in real time, so as to determine whether there is a carton 8 passing on the conveyor belt 121, and then the start time of the rotating motor three is controlled by the PLC controller to avoid collision with the carton 8 that happens to pass by during the downward rotation and cause damage.

[0055] A detection port is provided on the conveying track 13, and a limit strip 133 is installed on the conveying track 13 by screws. The limit strip 133 is arranged adjacent to the detection port, and a contact sensor 2 (not shown in the figure) is embedded in the limit strip 133. The contact sensor 2 is arranged opposite to the push plate 123, and the contact sensor 2 is connected to the PLC controller by an electrical signal. A groove 2 134 and two oppositely arranged grooves 3 135 are respectively provided on the inner walls of three sides of the detection port. The position of the groove 2 134 is opposite to the position of the limit strip 133. The electric push rod 2 is movably provided with a positioning plate 131 that is compatible with the groove 2 134, and the groove 3 135 is movably provided with a positioning plate 132 that is compatible with the groove 3 135 through the electric push rod 3. The electric push rod 2 and the electric push rod 3 are both built-in inside the conveying track 2 13, and a contact sensor 3 is embedded on the surface of the positioning plate 131 on the side where the limit strip 133 is located, and contact sensors 3 are also embedded on the opposite surfaces of the positioning plates 2 132 on both sides (contact sensor 3 is not shown in the figure), and the contact sensor 3 is connected to the PLC controller through an electrical signal.

[0056] A lifting plate 5 is provided below the detection port for lifting. The cross section of the lifting plate 5 is consistent with the shape of the detection port. An electric cylinder 51 is installed on the base 1. The top of the electric cylinder 51 is fixed to the bottom surface of the lifting plate 5 by screws, and four lifting columns 52 are also connected to the bottom wall of the lifting plate 5 by threads. A limiting ring 521 connected as an integral whole is fixed to the outer wall of the lifting column 52. A contact sensor four (not shown in the figure) is embedded on the bottom surface of the limiting ring 521. The contact sensor four is connected to the PLC controller by an electrical signal.

[0057] It should be further explained that the carton 8 is pushed by the push plate 123 on the conveyor belt 121 to the side of the conveyor track 13. During the pushing process of the carton 8, the lifting plate 5 is in the highest position, that is, the upper surface of the lifting plate 5 and the upper surface of the conveyor track 13 are on the same horizontal plane. As the carton 8 continues to move, when it contacts the limit strip 133, the contact sensor 2 on the limit strip 133 is triggered, that is, the carton 8 has been pushed into place at this time. Then, the PLC controller immediately controls the electric suction cup 124 to stop and controls the push plate 123 to reset. At the same time, the PLC controller starts the electric cylinder 51 to drive the lifting plate 5 to descend. When it descends to the limit ring 521 and contacts the upper surface of the base 1, the contact sensor 4 on the bottom surface of the limit ring 521 is Triggered, the electric cylinder 51 stops, the carton 8 is located inside the detection port and one side of the carton 8 is in contact with one end of the detection port. At the same time, the PLC controller immediately and synchronously starts the electric push rods 3 on both sides of the detection port, so that the positioning plates 132 on both sides finally position the carton 8 on the central axis of the length of the lifting plate 5. After the contact sensors 3 on the positioning plates 132 on both sides are triggered, the electric push rod 3 stops under the action of the PLC controller. At the same time, the PLC controller drives the electric push rod 2 to start, so that the positioning plate 131 approaches the position of the carton 8, and after contacting the carton 8, the contact sensor 3 on the positioning plate 131 is triggered, so that the electric push rod 2 also stops immediately. At this time, the carton 8 is fixed on the detection station.

[0058] Among them, in this process, since the carton 8 is not necessarily on the central axis of the length of the lifting plate 5 when it contacts the limit strip 133, no matter which of the two positioning plates 132 on both sides contacts the carton 8 first, the contact sensor 3 thereon will not be triggered, but will continue to move in a straight line until the two positioning plates 132 on both sides contact the carton 8, and then the contact sensor 3 thereon will be triggered, thereby ensuring that the center line of the carton 8 can overlap with the center line of the length of the lifting plate 5.

[0059] like Figure 1-2 as well as Figure 8-9 As shown, a fixing assembly 3 is also installed on the base 1 on both sides of the conveying track 2 13, and the fixing assembly 3 includes a fixing frame 31, a lifting block 33 and a fixing rod 34;

[0060] The bottom of the fixing frame 31 is fixed to the base 1 by screws, and the fixing frame 31 is arranged in a U-shaped structure. Vertical grooves are opened on the opposite side walls of the fixing frame 31. A screw rod 32 is rotatably arranged in the vertical groove. The top of the screw rod 32 is screwed on the top surface of the fixing frame 31 to install a rotating motor 4 for driving the screw rod 32 to rotate. The lifting block 33 is slidably arranged along the inner wall of the vertical groove, and the screw rod 32 penetrates the lifting block 33 and is arranged to cooperate with the lifting block 33 with threaded transmission. A fixing rod 34 is threadedly connected between the two lifting blocks 33 on the same fixing frame 31.

[0061] An adjustment plate 4 is slidably arranged between the fixing rods 34 on both sides. The adjustment plate 4 and the fixing rods 34 are connected as a whole by fastening screws. The fixing rods 34 are provided with a plurality of screw grooves (not shown in the figure) adapted to the fastening screws for positioning the adjustment plate 4, and a bottom groove 41 is also provided on the bottom wall of the adjustment plate 4, and a rack 42 is installed between the inner walls of the bottom groove 41 by screws.

[0062] It should be further explained that before the inspection, the height position of the adjustment plate 4 can be appropriately adjusted according to the height of the carton 8. During the adjustment, the screw 32 is used to drive the lifting block 33 through the thread, so that the lifting blocks 33 on the fixed frames 31 on both sides can synchronously drive the adjustment plate 4 to move downward or upward for adjustment. After adjusting to the appropriate height, stop rotating the motor 4, and the horizontal position of the adjustment plate 4 can be directly adjusted manually by unscrewing the fastening screws, moving the adjustment plate 4 to it above the carton 8, and then fixing its position by tightening the fastening screws.

[0063] like Figure 10-12 As shown, the testing mechanism includes two adjusting boxes 6 arranged opposite to each other and a pressing roller 71 movable below the adjusting boxes 6;

[0064] Both ends of the regulating box 6 are provided with integrated protrusions 61, and the protrusions 61 are arranged in a trapezoidal structure. The protrusions 61 slide in the inner wall of the bottom groove 41, thereby driving the regulating box 6 to slide between the inner walls of the bottom groove 41. Two "L"-shaped fixing plates 62 are installed on the bottom wall of the regulating box 6 by screws. The limiting blocks 621 are clamped between the fixing plates 62 on both sides, and a cam member 7 is arranged between the two fixing plates 62 through an axis connection and rotation. One end of the cam member 7 is a flat end and a pressure roller 71 is threadedly connected to the end. The length of the pressure roller 71 can be selected appropriately according to the situation. Touch sensors 73 are also embedded at positions near the two ends of the pressure roller 71. The touch sensor 73 is connected to the PLC controller through an electrical signal. A threaded column is inserted in the middle of the pressure roller 71. The threaded column is screwed into the cam member 7 to connect and fix the two. A synchronous wheel 2 72 that rotates coaxially with the cam member 7 is also connected to one side of the cam member 7.

[0065] It should be further explained that the rotation output of the synchronous wheel 2 72 drives the rotation of the cam member 7, so that the pressure roller 71 installed on the cam member 7 moves synchronously therewith. As the pressure roller 71 continues to approach the carton 8, when the two come into contact, the touch sensor 73 is triggered. At this time, the PLC controller immediately controls the rotating motor 5 to pause and restart. When restarting, the PLC controller enters the metering mode, and calculates the rotation angle of the rotating motor 5 after restarting until the connection between the tape strip and the carton 8 is torn and manually stopped. The corresponding applied force is different for different rotation angles. Finally, the rotation angle of the pressure roller 71 (that is, the rotation angle of the cam member 7) is calculated through the transmission ratio, and the change in the rotation angle is used to reflect the test of the sealing effect of the tape strip on the carton 8 with different forces.

[0066] The position adjustment assembly includes an electromagnetic lock body 63, a shaft 64, a gear 641 and a shaft sleeve 642;

[0067] The angle adjustment assembly includes a shaft 2 68, a synchronous wheel 1 681, a shaft sleeve 2 682 and an electromagnetic lock body 2 69;

[0068] Among them, shaft one 64 and shaft two 68 are both made of iron materials;

[0069] The interior of the regulating box 6 is arranged in a cavity structure, and an electromagnetic lock body 1 63 and an electromagnetic lock body 2 69 are respectively installed on the inner walls at both ends thereof by screws. The essence of the electromagnetic lock body 1 63 and the electromagnetic lock body 2 69 is that an annular silicon steel sheet is arranged in the middle of the interior thereof, and the power supply is connected to the silicon steel sheet to control the power supply, so that it can generate a strong suction force when it is powered on, and then the shaft 1 64 or the shaft 2 68 is sucked and fixed. An external power supply connected to the electromagnetic lock body 1 63 and the electromagnetic lock body 2 69 is arranged on one side thereof by a wire, and the external power supply is connected to the PLC controller by an electrical signal, and the two external power supplies are respectively embedded in the inner walls at both ends of the regulating box 6; a shaft 1 64 runs through the middle of the electromagnetic lock body 1 63, and one end of the shaft 1 64 is rotatably arranged on the inner wall of one end of the regulating box 6, and a shaft sleeve 1 642 connected to it is installed on the other end of the shaft 1 64 by screws, and a gear 1 641 is also connected to the end of the shaft 1 64 by a key, and the gear 1 Wheel 1 641 is meshed with rack 42; shaft 2 68 runs through the middle of electromagnetic lock body 2 69, one end of shaft 2 68 is rotatably set on the inner wall of the other end of adjustment box 6, and shaft sleeve 2 682 connected to shaft 2 68 is installed on the other end of shaft 2 68 by screws, and synchronous wheel 1 681 is also connected to the end of shaft 2 68 by key, synchronous wheel 1 681 and synchronous wheel 2 72 are located in the same vertical plane and a synchronous track is connected therebetween, and the transmission ratio between synchronous wheel 1 681 and synchronous wheel 2 72 is 1:1, and the synchronous track also runs through limit block 621, and contact sensor 7 is embedded on the lower surface of limit block 621, and contact sensor 7 is connected to PLC controller by electrical signal, when cam member 7 rotates with synchronous wheel 2 72 to contact with limit block 621, contact sensor 7 is triggered, and at this time, PLC controller will stop driving synchronous wheel 2 72, that is, cam member 7 is in initial position at this time.

[0070] The switching drive assembly includes a drive member 66 and a spline shaft 661;

[0071] A driving member 66 is also arranged between the shaft sleeve 1 642 and the shaft sleeve 2 682. The driving member 66 is arranged in an axial structure and a spline shaft 661 connected to it is passed through the middle. Key grooves matching the spline shaft 661 are also respectively provided on the shaft sleeve 1 642 and the shaft sleeve 2 682. A plurality of tooth grooves are evenly arranged on the circumferential outer surface of the driving member 66. The tooth grooves are arranged in a strip structure, and contact sensors 5 (not shown in the figure) are embedded at both ends of one of the tooth grooves. The contact sensor 5 is connected to the PLC controller through an electrical signal. A gear 2 65 is meshed with the driving member 66 on one side. The transmission ratio of the driving member 66 to the gear 2 65 is 1:1. A rotating motor 5 for driving the gear 2 65 is connected to one side of the driving member 66. The rotating motor 5 is fixed to the raised inner wall of the adjustment box 6 by screws.

[0072] The displacement assembly includes a moving member 67 and a connecting ring 671;

[0073] Annular connecting grooves are provided near both ends of the driving member 66, and connecting rings 671 matching therewith are provided in the connecting grooves. The connecting grooves and the connecting rings 671 can be rotatably arranged. A push rod motor is also installed on the inner wall of one side of the adjusting box 6 by screws, and a moving member 67 is fixed to the output end of the push rod motor by screws. The moving member 67 is arranged in a rectangular structure, and the two connecting rings 671 are connected to the moving member 67 as a whole by shaft welding.

[0074] In addition, a contact sensor six is ​​embedded on the surface of the side of the adjustment box 6 facing the inner wall of the bottom groove 41. The contact sensor six is ​​connected to the PLC controller through an electrical signal. Whether the adjustment box 6 is in the initial position is determined by whether the contact sensor six is ​​triggered. The initial position is the position state when the adjustment box 6 is in contact with the inner wall of the bottom groove 41.

[0075] It should be further explained that the position of gear 2 65 remains unchanged, and it is the driving member 66 that changes position. The push rod motor is started and controlled by the PLC controller, so that the moving member 67 can synchronously drive the driving member 66 to perform linear motion through the connecting ring 671.

[0076] State 1, when the push rod of the push rod motor is in the initial state, that is, the length of the push rod is the shortest, at this time, one end of the spline shaft 661 is connected and matched with the keyway on the shaft sleeve 2 682, and at this time, the gear 2 65 is in contact with one end of the tooth groove (the end close to the side where the shaft sleeve 1 642 is located), and the contact sensor 5 on this side is triggered. The PLC controller immediately controls the electromagnetic lock body 1 63 to enter the working mode, locks the movement of the shaft 1 64 through the magnetic attraction to keep it still, and controls the electromagnetic lock body 2 69 to enter the pause mode, so that the shaft 2 68 can continue to rotate and adjust. Subsequently, the gear Driven by the second 65, the driving member 66 synchronously drives the synchronous wheel one 681 to rotate through the cooperation of the spline shaft 661 and the shaft sleeve two 682. The synchronous wheel one 681 uses the transmission effect of the synchronous track to make the synchronous wheel two 72 rotate synchronously, thereby realizing the angle adjustment of the pressure roller 71. In this process, when the touch sensor 73 is triggered, the rotating motor five is paused and restarted under the control of the PLC controller, so that in the subsequent test process, the corresponding angle of the downward pressure process can be completed, and then it can be concluded how different forces affect the performance of the sealing degree of the tape strip on the carton 8.

[0077] State 2, when the push rod of the push rod motor is at its longest length, the other end of the spline shaft 661 is connected and matched with the keyway on the shaft sleeve 1 642. As the push rod of the push rod motor is extended, the contact position of the gear 2 65 and the tooth groove changes. When the gear 2 65 is not in contact with the contact sensor 5 on the end wall of the tooth groove, the PLC controller immediately controls the electromagnetic lock body 2 69 to enter the working mode, and locks the shaft 2 68 by magnetic attraction to keep it stationary. Then, the spline shaft 661 and the driving member 66 continue to move with the movement of the moving member 67. When the gear 2 65 is in contact with the other end of the tooth groove (close to the shaft sleeve 2 682), the gear 2 65 is in contact with the contact sensor 5 on the end wall of the tooth groove. When the pressure roller 71 contacts one end of one side, the contact sensor 5 on that side is triggered, and the PLC controller immediately controls the electromagnetic lock body 63 to enter the pause mode, so that the shaft 64 can continue to rotate and adjust. Subsequently, under the drive of the gear 2 65, the gear driving member 66 synchronously drives the gear 641 to rotate through the cooperation of the spline shaft 661 and the shaft sleeve 642, so that the gear 641 can be moved and adjusted along the length direction of the rack 42, and then the contact position of the pressure roller 71 and the carton 8 can be changed according to the test needs. After adjusting to the appropriate position, the position of the spline shaft 661 is switched to state 1 to continue the test.

[0078] It should also be noted that, when only one side of the top of the carton 8 is subjected to relevant tests, it is only necessary to control the adjustment box 6 on one side to adjust the position from the initial position, and the adjustment box 6 on the other side is still in its initial position; when relevant tests are carried out on both sides of the top of the carton 8 at the same time, the adjustment box 6 that is not in the initial position must be adjusted to the initial position first, and then the position of the adjustment boxes 6 on both sides must be adjusted from the initial position at the same time.

[0079] Working principle:

[0080] First, two suitable pressing rollers 71 are selected and fixed on the cam members 7 on both sides respectively, and the horizontal position of the adjusting plate 4 is adjusted to a suitable position according to the width of the carton 8 to be tested, and then the longitudinal height parameters of the adjusting plate 4 are input to the control terminal 11 according to the height of the carton 8 to be tested;

[0081] Next, the cartons 8 are placed one by one on the conveying track 12 for transmission, and the working interval time of the blocking rod 21 is set. When the contact sensor 1211 on the blocking rod 21 is triggered, the conveying belt 121 is suspended, and the push plate 123 pushes the carton 8 on the conveying belt 121 to the detection port. When the carton 8 contacts the limit strip 133, the contact sensor 2 on the limit strip 133 is triggered, and the push plate 123 is reset. The conveying belt 121 and the conveying roller 122 continue to work. At the same time, after the lifting plate 5 is lowered to a fixed position, the positioning plate 131 and the positioning plate 2 132 fix the position of the carton 8 to be tested in the detection port. At this time, when the contact sensor 3 on the positioning plate 131 and the positioning plate 2 132 are both triggered, the PLC controller automatically completes the height adjustment of the adjustment plate 4 according to the input longitudinal height parameter.

[0082] Then, according to the test needs, the different positions of the pressure roller 71 are changed, and the matching of the spline shaft 661 and the sleeve 1 642 is switched, so that when the gear 2 65 is driven to rotate, the gear 1 641 is controlled to move to one side along the rack 42, so as to move to the required position. After moving to the test position, the spline shaft 661 and the sleeve 2 682 are switched again, so that when the gear 2 65 is driven to rotate, the cam member 7 can be synchronously controlled to drive the pressure roller 71 to rotate and press down. When the touch sensor 73 is triggered, the pressure roller 71 continues to act on the carton 8 to apply force to it. During this period, the PLC controller calculates the rotation angle of the rotating motor 5, and the system calculates the rotation angle of the pressure roller 71 through the transmission ratio, so as to detect the influence of applying different forces at different contact points on the sealing performance of the tape strip on the carton 8.

[0083] After the test is completed, press the reset button on the control terminal 11, and the positioning plate 1 131 and the positioning plate 2 132 first complete the reset work, and then the adjustment plate 4 and the lifting plate 5 rise and reset synchronously. After the lifting plate 5 is reset, the carton 8 can be removed.

[0084] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, internal communication between two elements, or an interaction relationship between two elements. For ordinary technicians in this field, the meanings of the above terms in this application can be understood according to specific circumstances.

[0085] The above is a detailed introduction to a closure performance testing system for a paper packaging box provided in an embodiment of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solution and its core idea of ​​the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present application.

Claims

1. A sealing performance testing system for a paper packaging box, characterized in that: include: A base (1), wherein a control terminal (11) with a PLC controller is mounted on the base (1), and two sets of fixing components (3) are also mounted on the base (1), and an adjustment plate (4) is slidably arranged between the fixing components (3) on both sides; A feeding mechanism, the feeding mechanism comprising a conveying track 1 (12) and a conveying track 2 (13), a conveying belt (121) and a carton (8) moving along the length direction of the conveying track 1 (12) are also arranged on the conveying track 1 (12), and a blocking rod (21) that can be adjusted reciprocatingly by 90 degrees and a push plate (123) for pushing the carton (8) for inspection are also arranged on the conveying track 1 (12), an inspection port is opened on the conveying track 2 (13), a lifting plate (5) with adjustable height is arranged in the inspection port along the vertical direction, and a limiting strip (133) is installed on one side of the inspection port on the conveying track 2 (13) to limit the pushing position of the carton (8); A testing mechanism, the testing mechanism comprising two adjustment boxes (6) and a pressure roller (71) movable below the adjustment boxes (6); A bottom groove (41) is provided on the bottom surface of the adjustment plate (4), a rack (42) is also installed in the bottom groove (41), two adjustment boxes (6) are slidably arranged along the inner wall of the bottom groove (41), the adjustment box (6) is a cavity structure, and a position adjustment component and an angle adjustment component are respectively arranged on both sides of the inside of the adjustment box (6), the position adjustment component comprises a gear 1 (641), the gear 1 (641) is meshed with the rack (42), the angle adjustment component comprises a synchronous wheel 1 (681), and a switching drive component is also arranged between the position adjustment component and the angle adjustment component, and a gear meshed with the switching drive component is arranged on one side of the switching drive component. The switching drive assembly is provided with a displacement assembly that moves along the length direction of the adjustment box (6), and the displacement assembly is connected to the switching drive assembly and does not affect the movement state of the switching drive assembly. The two ends of the switching drive assembly can be connected to the position adjustment assembly and the angle adjustment assembly respectively, so as to drive and control one of the two separately. A cam member (7) and a synchronous wheel (72) that are connected as one are rotatably provided below the bottom of the adjustment box (6). The synchronous wheel (681) and the synchronous wheel (72) are synchronously connected through a synchronous crawler. A pressure roller (71) is installed on one end of the cam member (7). The fixing assembly (3) comprises a fixing frame (31), a lifting block (33) and a fixing rod (34); The fixing frame (31) is arranged in a "U"-shaped structure, and the bottom of the fixing frame (31) is fixedly mounted on the base (1). Vertical grooves are provided on both side walls of the fixing frame (31). A lifting block (33) is slidably arranged between the inner walls of the vertical grooves, and a screw rod (32) threadedly matched with the lifting block (33) passes through the interior of the lifting block (33). The screw rod (32) is rotatably arranged between the top wall and the bottom wall of the vertical groove. The fixing rod (34) is installed between the two lifting blocks (33) on the same fixing frame (31) through a threaded connection. The adjustment plate (4) slides between the fixing rods (34) on both sides, and the adjustment plate (4) and the fixing rods (34) are connected as a whole via fastening screws.

2. A closure performance testing system for a paper packaging box according to claim 1, characterized in that: The conveying track 1 (12) and the conveying track 2 (13) are arranged vertically, the conveying belt (121) is installed in a direction from the conveying track 1 (12) to the conveying track 2 (13), and a plurality of conveying rollers (122) are installed on both sides of the conveying belt (121), the conveying rollers (122) are rotatably arranged between the side walls of the conveying track 1 (12), and the conveying direction of the conveying belt (121) is consistent with the conveying direction of the conveying rollers (122); A fixing seat (2) is installed on the conveying track (12) by screws, one end of the blocking rod (21) is rotatably arranged in the middle of the fixing seat (2), and at least two contact sensors (211) are embedded on one side surface of the blocking rod (21), and the contact sensor (211) is connected to the PLC controller by an electrical signal. A groove (125) adapted to the push plate (123) is provided on the side wall of the conveying track (12) facing the conveying track (13); an electric push rod (125) is installed on one side of the groove (125) on the side wall of the conveying track (12); and two electric suction cups (124) are embedded on one side wall of the push plate (123); the electric suction cups (124) are connected to the PLC controller via an electrical signal.

3. A sealing performance testing system for a paper packaging box according to claim 2, characterized in that: A second groove (134) and two oppositely arranged third grooves (135) are respectively provided on the inner walls of three sides of the detection port, and a first positioning plate (131) and a second positioning plate (132) adapted thereto are respectively provided in the second groove (134) and the third groove (135); The cross section of the lifting plate (5) is consistent with the shape and size of the detection port, and the bottom of the lifting plate (5) is equipped with an electric cylinder (51) connected to the base (1), and four lifting columns (52) are also connected to the bottom wall of the lifting plate (5) through threads, and a limit ring (521) is installed on the outer wall of the lifting column (52); When the carton (8) pushed onto the second conveying track (13) contacts the limiting strip (133), the lifting plate (5) starts to descend to a height flush with the upper surface of the second conveying track (13) and stops when the limiting ring (521) contacts the base (1). At this time, the carton (8) is located in the detection port and can be fixed in the detection port by the cooperation between the first positioning plate (131) and the second positioning plate (132).

4. A closure performance testing system for a paper packaging box according to claim 3, characterized in that: The position adjustment assembly also includes an electromagnetic lock body (63), a shaft (64) and a shaft sleeve (642); One end of the shaft (64) passes through the electromagnetic lock body (63) and is rotatably disposed on the inner wall of one end of the adjustment box (6); the electromagnetic lock body (63) is fixed to the inner wall of the adjustment box (6) by screws; the shaft sleeve (642) is fixedly mounted on the other end of the shaft (64) by screws; the gear (641) is mounted on the shaft (64) by key connection; when current flows through the electromagnetic lock body (63), the shaft (64) cannot rotate; otherwise, the shaft (64) can rotate; The angle adjustment assembly also includes a second shaft (68), a second shaft sleeve (682) and a second electromagnetic lock body (69); One end of the second shaft (68) passes through the second electromagnetic lock body (69) and is rotatably disposed on the inner wall of the other end of the adjustment box (6); the second electromagnetic lock body (69) is fixed in the adjustment box (6) by screws; the second shaft sleeve (682) is fixedly mounted on the other end of the second shaft (68) by screws; the first synchronous wheel (681) is mounted on the second shaft (68) by key connection; when current flows through the second electromagnetic lock body (69), the second shaft (68) cannot rotate; otherwise, the first shaft (64) can rotate; Wherein, external power supplies are installed on two inner walls of the regulating box (6) on opposite sides, and the two external power supplies are respectively connected to the electromagnetic lock body 1 (63) and the electromagnetic lock body 2 (69) through wires, and the external power supplies are connected to the PLC controller through electrical signals.

5. A closure performance testing system for a paper packaging box according to claim 4, characterized in that: The switching drive assembly comprises a drive member (66) of a shaft-shaped structure and a spline shaft (661); The driving member (66) moves between the shaft sleeve 1 (642) and the shaft sleeve 2 (682) along the length direction of the regulating box (6), a plurality of tooth grooves of strip-shaped structures are evenly formed on the outer wall of the driving member (66), the gear 2 (65) and the tooth grooves are meshed with each other, and the transmission ratio between the driving member (66) and the gear 2 (65) is 1:1, a rotating motor 5 is connected to one side of the gear 2 (65), and the rotating motor 5 is fixed in the regulating box (6) by screws, and connecting grooves are respectively formed on the outer wall of the driving member (66) on both sides of the tooth grooves; A keyway is provided on one end of the first sleeve (642) and the second sleeve (682) facing the driving member (66); the spline shaft (661) penetrates the handle of the driving member (66) and is connected thereto as a whole; the keyway is matched with the spline shaft (661); When gear 2 (65) contacts one end of the tooth groove near the shaft sleeve 1 (642), one end of the spline shaft (661) is connected to the shaft sleeve 2 (682) as a whole, and shaft 1 (64) cannot rotate at this time. When gear 2 (65) contacts one end of the tooth groove near the shaft sleeve 2 (682), the other end of the spline shaft (661) is connected to the shaft sleeve 1 (642) as a whole, and shaft 2 (68) cannot rotate at this time.

6. A closure performance testing system for a paper packaging box according to claim 5, characterized in that: The displacement assembly comprises a moving member (67) and a connecting ring (671); A push rod motor is fixedly mounted on the inner wall of the other side of the regulating box (6); the moving member (67) moves linearly along the inner wall of the regulating box (6); one end of the moving member (67) is fixedly connected to the end of a push rod of the push rod motor; the moving member (67) is arranged in a rectangular parallelepiped structure; two connecting rings (671) are mounted on the moving member (67) by shaft welding; the two connecting rings (671) are respectively sleeved in connecting grooves on both sides; and the connecting rings (671) and the connecting grooves are rotatably arranged.

Images