A seal strength testing system for medical packaging bags

Abstract

The present invention relates to the field of packaging bag testing technology, and more particularly to a seal strength testing system for medical packaging bags. This system addresses the shortcomings of the prior art and comprises a test bench, a transfer mechanism, an angle adjustment mechanism, a force adjustment mechanism, and an adsorption mechanism. The test bench is arranged in a T-shaped structure, with a conveyor belt mounted thereon and a display mounted on its top surface. A PLC controller is mounted on the side walls of the test bench, and a fixed slot is provided on the test bench. The transfer mechanism slides and adjusts along the length of the test bench, and an electric suction cup that can be raised and lowered is mounted on the transfer mechanism. A sub-controller connected to the top of the electric suction cup facilitates the grabbing and placing of the packaging bag. Compared to the prior art, the present invention can effectively perform spot checks on medical packaging bags and test the seal strength at different peeling angles.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging bag detection, and in particular to a sealing strength testing system for medical packaging bags. Background Art

[0002] Medical packaging bags have one side of paper and the other side of plastic composite film. They are mainly used for packaging sterilized medical devices. During the production process, medical packaging bags need to be tested for sealing, waterproofness, puncture resistance, and sealing strength.

[0003] The seal strength test of medical packaging bags is primarily conducted through peel tests, which aim to evaluate the seal strength and sealing performance of the packaging bag to ensure that the bag can effectively seal and protect the contents. The seal of a medical packaging bag refers to the opening of the bag, which may be sealed using methods such as heat sealing or adhesives. Different sealing methods have different requirements for peel tests. Therefore, existing peel test equipment has the following problems:

[0004] 1. For packaging bags sealed by heat seal or other similar methods, the test is mainly conducted by applying force in the longitudinal direction of the seal to peel off the seal. For packaging bags sealed by adhesive or other similar methods, the test is mainly conducted by applying force in the transverse direction of the seal to peel off the seal. Current equipment cannot achieve the results of both test requirements on the same device.

[0005] 2. Peel tests are generally performed with forces acting directly on the surface of an object. However, in actual use, the seal of a medical packaging bag will be subjected to forces at multiple angles when it is peeled, resulting in different situations.

[0006] Therefore, it is necessary to provide a seal strength testing system for medical packaging bags to solve the above-mentioned problems. Summary of the Invention

[0007] The object of the present invention is to provide a sealing strength testing system for medical packaging bags to solve the problems raised in the above background technology.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions: a sealing strength testing system for medical packaging bags, comprising a test bench, a transfer mechanism, an angle adjustment mechanism, a force adjustment mechanism, and an adsorption mechanism. The test bench is arranged in a "T"-shaped structure, and a conveyor belt is installed in the middle of the test bench. A display is also installed on the top surface of the test bench. A PLC controller is also installed on the side wall of the test bench. The test bench is also provided with a fixing slot.

[0009] The transfer mechanism is slidably adjusted along the length of the test bench, and is equipped with an electric suction cup that can be raised and lowered. A sub-controller connected to the electric suction cup is provided on the top of the electric suction cup to realize the process of grabbing and placing the packaging bag.

[0010] The angle adjustment mechanism includes a frame, a second electric suction cup is provided in the middle of the top of the frame, and a second sub-controller connected to the second electric suction cup is provided at the bottom of the frame. The angle adjustment mechanism is arranged in a fixed groove so that the frame can be switched between horizontal and vertical states;

[0011] The frame is also provided with a sealing strength auxiliary test component for controlling the distance of peeling of the packaging bag seal, thereby judging the strength of the packaging bag seal by the time taken to peel the same distance;

[0012] A vertically arranged fixed frame is also installed on the top wall of the test bench, a second movable frame is slidably arranged on one side wall of the fixed frame, a force adjustment mechanism is installed on the other side wall of the second movable frame, an electric cylinder that is adjusted synchronously with the force adjustment mechanism is also provided on the force adjustment mechanism, a connecting ball is connected to the end of the output shaft of the electric cylinder, the force adjustment mechanism is used to adjust the direction of the force of the electric cylinder, and the flexibility of the connecting ball allows the direction of the pulling force acting on the adsorption mechanism to change the angular position;

[0013] The adsorption mechanism is connected to the output shaft end of the electric cylinder via a connecting ball, and is used to adsorb the seal of the packaging bag, thereby driving the seal on that side to perform a peeling test.

[0014] In one embodiment, the transfer mechanism includes a mobile frame and a mobile frame. Two symmetrically distributed guide grooves are opened on the top surface of the test bench. A screw is installed in the guide groove. The two ends of the mobile frame are respectively slidably arranged along the inner walls of the guide groove on both sides, and the screw passes through the interior of the two ends of the mobile frame and is threadedly engaged therewith.

[0015] The vertical side walls on both sides of the movable frame are provided with side frames connected thereto as a whole, the side frames are provided with gear 2, a movable frame is slidably provided between the side walls of the movable frame, and the gears 2 on both sides are respectively engaged with the side walls of the movable frame;

[0016] The movable frame is arranged in a "U"-shaped structure, and a sliding member is slidingly arranged between its side walls. The sliding member is arranged in an "I"-shaped structure. Two lifting motors are installed on the top wall of the sliding member. The output shaft of the lifting motor passes through the sliding member and is connected to the top wall of the electric suction cup.

[0017] In one embodiment, the angle adjustment mechanism further includes a gear 1 and a rack, two symmetrically distributed screw rods 4 are installed in the fixed groove, the screw rods 4 pass through the rack and are threadedly engaged with the rack, a convex strip connected to the rack is provided on one side wall of the rack, the gear 1 is meshed with the rack, and a synchronization shaft connected to the rack with a key is passed through the middle of the gear 1, one end of the synchronization shaft is fixed to the side wall of the frame by a snap connection, and the other end is rotatably arranged in the groove wall of the fixed groove;

[0018] When the angle adjustment mechanism is in a horizontal state, the height of the electric suction cup 2 and the height of the conveyor belt are on the same horizontal plane.

[0019] In one embodiment, the sealing strength auxiliary test assembly includes a side seat 1 and a side seat 2, two of each of which are provided and are respectively mounted on the frame by screws;

[0020] The side seat is provided with a side groove, a guide rod is provided in the side groove, a spring is sleeved on the guide rod, and a sliding block is slidably provided on the guide rod, and one end of the spring is in contact with the side wall of the sliding block;

[0021] Two side grooves are symmetrically provided on the side seat. A guide rod is provided in each side groove. A spring is sleeved on the guide rod. The sliding block in contact with the spring is also slidably provided on the guide rod.

[0022] In one embodiment, the seal strength auxiliary test assembly further includes an insertion rod, a slot is formed on one side wall of the sliding block, the insertion rod is inserted between the slots of two oppositely arranged sliding blocks, an infrared emitting tube is embedded in the other side wall of the sliding block, and a button connected to the infrared emitting tube is provided on the top wall of the sliding block, and a positioning groove is further formed on one side of the button on the top wall of the sliding block;

[0023] The side seat one and the side seat two are both connected with a limiting screw through a threaded connection, the limiting screw is adapted to the positioning groove, and an infrared receiving tube matching the infrared emitting tube is embedded in the middle position of the inner wall of one side of the side groove one and the side groove two.

[0024] In one embodiment, the fixing frame is provided with two symmetrically arranged vertical slots, and a second screw is installed in the vertical slot along the vertical direction;

[0025] Two fixing seats 1 and two fixing seats 2 are welded on one side wall of the movable frame 2;

[0026] The force adjustment mechanism includes an adjustment frame 1 and an adjustment frame 2, both of which are arranged in an arc-shaped structure. The adjustment frame 1 is rotatably arranged between two fixed seats 1, and the adjustment frame 2 is rotatably arranged between two fixed seats 2. A through hole 1 and a through hole 2 are respectively opened on the adjustment frame 1 and the adjustment frame 2, and a slide seat 1 is slidably arranged between the outer walls of the adjustment frame 1, and a slide seat 2 is slidably arranged between the outer walls of the adjustment frame 2. A positioning member is connected between the slide seat 1 and the slide seat 2, and the positioning member slides between the inner walls of the through hole 1 and the through hole 2;

[0027] Among them, a cylinder seat is rotatably mounted on one side wall of the sliding seat 2, and the electric cylinder is fixed to the side wall of the cylinder seat by bolts.

[0028] In one embodiment, the adsorption mechanism includes an electric suction cup 3 and a mounting frame, a sub-controller 3 is provided between the side walls of the mounting frame, and two "T"-shaped brackets are provided on the mounting frame, the electric suction cup 3 is fixed between the brackets on both sides, and the sub-controller 3 is electrically connected to the electric suction cup 3;

[0029] A connecting seat is welded on one side wall of the mounting frame, and a connecting ball is arranged in the connecting seat.

[0030] In one embodiment, when the electric suction cup moves closer to one side of the packaging bag sealing in three directions, the connecting ball and the connecting seat are in a state of being connected as one body; when the adjusting frame one or the adjusting frame two is rotated and adjusted, the connecting ball and the connecting seat are in a state of being movably connected; when the adjusting frame one or the adjusting frame two is rotated and adjusted, the connecting ball and the connecting seat are in a state of being connected as one body.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1. By setting up electric suction cups 1, 2 and 3, a pair of electric suction cups are used to transfer and transport the packaging bag, and one side of the bag is firmly sucked and fixed by electric suction cup 2, and the other side of the seal is sucked and fixed by electric suction cup 3. Then, the electric suction cup 3 acts on one side of the seal to realize the horizontal or vertical peeling test of the packaging bag's seal strength. In conjunction with the seal strength auxiliary test component, the signal connection between the infrared transmitting tube and the infrared receiving tube is used to control the distance of the seal being peeled, thereby testing the time taken for the seal of the packaging bag to be peeled a certain distance, thereby evaluating the sealing strength of the packaging bag.

[0033] 2. By setting up an angle adjustment mechanism, the packaging bag can be switched between the horizontal and vertical directions, and a force adjustment mechanism is set on one side of the angle adjustment mechanism. The force adjustment mechanism is used to change the direction or angle of the force applied by the three pairs of electric suction cups to seal the packaging bag, so that the effect of applying force to peel the seal under different angles can be simulated and tested, thereby improving the comprehensiveness of the test.

[0034] In summary, the present invention can effectively perform random inspections on medical packaging bags and test the strength of their seals by peeling at different angles. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The following detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings will make the technical solutions and other beneficial effects of the present application apparent.

[0036] In the attached figure:

[0037] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0038] Figure 2 It is a schematic structural diagram of the transfer mechanism of the present invention;

[0039] Figure 3 This is a schematic diagram of the installation of the angle adjustment mechanism of the present invention;

[0040] Figure 4 yes Figure 3 A magnified schematic diagram of part A in the middle;

[0041] Figure 5 yes Figure 3 A partial schematic diagram from another perspective;

[0042] Figure 6 This is a schematic diagram of the installation of the infrared receiving tube of the present invention;

[0043] Figure 7 It is a schematic structural diagram of the sliding block of the present invention;

[0044] Figure 8 It is a schematic diagram of the installation and structure of the force adjustment mechanism of the present invention.

[0045] In the figure: 1. Test bench; 11. PLC controller; 12. Conveyor belt; 13. Fixing groove; 131. Gear 1; 132. Rack; 133. Limiting seat; 134. Screw 4; 14. Guide groove 1; 141. Screw 1; 15. Fixing bracket; 151. Screw 2;

[0046] 2. Transfer mechanism; 21. Mobile frame 1; 22. Side frame; 221. Gear 2; 23. Mobile frame; 24. Sliding member; 25. Electric suction cup 1; 251. Sub-controller 1;

[0047] 3. Angle adjustment mechanism; 31. Frame; 32. Side seat 1; 321. Guide rod 1; 33. Side seat 2; 331. Guide rod 2; 34. Electric suction cup 2; 341. Sub-controller 2; 35. Sliding block; 351. Positioning slot; 352. Infrared emitting tube; 353. Slot; 36. Infrared receiving tube;

[0048] 4. Mobile frame 2; 41. Fixed seat 1; 42. Fixed seat 2;

[0049] 5. Force adjustment mechanism; 51. Adjustment frame 1; 52. Adjustment frame 2; 53. Slide 1; 54. Slide 2; 55. Positioning member;

[0050] 6. Adsorption mechanism; 61. Electric suction cup three; 611. Sub-controller three; 62. Mounting bracket; 63. Connecting ball. DETAILED DESCRIPTION

[0051] The disclosure below provides many different embodiments or examples for realizing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art will appreciate the application of other processes and / or the use of other materials.

[0052] like Figure 1 As shown, the present invention provides a technical solution: a sealing strength testing system for medical packaging bags, including a test bench 1, a transfer mechanism 2, an angle adjustment mechanism 3, a force adjustment mechanism 5 and an adsorption mechanism 6. The test bench 1 is arranged in a "T"-shaped structure, and a conveyor belt 12 is installed between the side walls on one side thereof for conveying packaging bags. Baffle bars 1 are evenly distributed on the conveyor belt 12, and baffle bars 2 are clamped between two adjacent baffle bars 1. The four sides of the packaging bag are respectively in contact with baffle bars 1 and baffle bars 2 (that is, the packaging bag is placed in the area formed by baffle bars 1 and baffle bars 2). A display is assembled on the other side thereof, and a PLC controller 11 is fixed to the side wall of one side of the test bench 1 by bolts. Data is communicated between the display and the PLC controller 11.

[0053] A fixing groove 13 is provided on the top surface of the test bench 1, and the angle adjustment mechanism 3 is installed at one end of the fixing groove 13, which can realize the switching adjustment between the horizontal state and the vertical state, so that the packaging bag can be adjusted from the horizontal position to the vertical position for subsequent testing.

[0054] A fixing frame 15 is installed on the top surface of the test bench 1 on one side of the fixing groove 13 by bolts. The force adjustment mechanism 5 can be slidably adjusted along the vertical direction of the fixing frame 15, and the force adjustment mechanism 5 can adjust the direction or angle of force application, thereby achieving the test effect of the sealing strength of the packaging bag at different angles.

[0055] The adsorption mechanism 6 is installed at the output position of the force adjustment mechanism 5, so that one side of the packaging bag is adsorbed in the angle adjustment mechanism 3, and the adsorption mechanism 6 sucks the other side of the seal of the packaging bag, thereby achieving the effect of tearing the seal of the packaging bag.

[0056] It needs to be further explained that the packaging bags are first transported by the conveyor belt 12, and the packaging bags are spread out and transported one by one. One of the packaging bags is selected and adsorbed by the transfer mechanism 2 and placed on the angle adjustment mechanism 3. After the angle adjustment mechanism 3 adsorbs one side of the packaging bag, the angle adjustment mechanism 3 is rotated to stop in the vertical direction. Subsequently, the adsorption mechanism 6 adsorbs the other side of the packaging bag seal, and then the angle of the force adjustment mechanism 5 is adjusted to test the strength of the packaging bag seal under different force directions.

[0057] like Figure 2 As shown, the transfer mechanism 2 includes a moving frame 21, a moving frame 23 and an electric suction cup 25;

[0058] The movable frame 21 is arranged in a "U"-shaped structure, and screw holes are provided on both ends thereof. Two symmetrically distributed guide grooves 14 are provided on the top surface of the test bench 1. Position sensors (not shown in the figure) are embedded at both ends of the guide groove 14 to control the stop position of the movable frame 21. A screw 141 arranged along its length is installed in the guide groove 14, and a rotating motor (not shown in the figure) built into the test bench 1 is installed on one end of the screw 141. The two ends of the movable frame 21 slide respectively between the inner walls of the guide groove 14 on both sides, and the screw 141 passes through the screw hole and is threadedly coupled with it.

[0059] Side frames 22 connected to the movable frame 1 21 are provided on both sides of the vertical side walls. The side frames 22 are arranged in a "U"-shaped structure. Gear 2 221 is also installed in the side frames 22. Rotating motor 2 is installed on the top wall of the side frames 22 by bolts. Gear 2 221 is installed on the output end of rotating motor 2.

[0060] A moving frame 23 is slidingly arranged between the side walls of the moving frame 1 21. Tooth grooves that mesh with the gear 2 221 are provided on both side walls of the moving frame 23, and a limiting groove that matches the moving frame 23 is provided on the side wall of the moving frame 1 21, so that the moving frame 23 can only be moved and adjusted along the straight line direction of the position of the limiting groove.

[0061] A sliding member 24 is also slidably arranged between the side walls of the moving frame 23. The sliding member 24 is arranged in an "I"-shaped structure. The two ends of the sliding member 24 are respectively slidably arranged along the side walls of the moving frame 23, and a screw rod three is passed through the middle of the sliding member 24 for threaded transmission. A rotating motor three connected to the screw rod three is installed on one side wall of the moving frame 23 by a bolt.

[0062] Two lifting motors are installed on the top wall of the sliding member 24 by bolts. The output shaft of the lifting motor passes through the sliding member 24 and is connected to an electric suction cup 25 at its bottom end. A sub-controller 251 for controlling its adsorption is installed in the middle of the top surface of the electric suction cup 25 by screws. The sub-controller 251 is connected to the PLC controller 11 by an electrical signal.

[0063] It should be further explained that the PLC controller 11 starts the rotating motor 1, which drives the screw 141 to drive the movable frame to move and adjust along the guide groove 14. Figure 1 The right end shown slides to the left end and pauses, then the PLC controller 11 starts the rotary motor 2, so that the gear 221 drives the moving frame 23 to move and adjust in the horizontal direction, which is also Figure 1 As shown, the right side of the moving frame 23 moves toward its left side, and the gear 2 221 rotates one circle (i.e., the rotating motor 2 outputs one circle) and then pauses. At this time, the right end of the moving frame 23 is located directly below the moving frame 1 21, and its left end is located directly above the conveyor belt 12. Subsequently, the PLC controller 11 starts the rotating motor 3, causing the screw 3 to drive the sliding member 24 from Figure 1 The right end of the moving frame 23 shown moves to the left and stops at its left end. At this time, the PLC controller 11 will also control the conveyor belt 12 to pause, that is, after stopping, the sliding member 24 is also located directly above the conveyor belt 12. After that, the PLC controller 11 starts the lifting motor to drive the electric suction cup 12 to descend to the set height and then stop. The electric suction cup 12 falls directly above one of the packaging bags on the conveyor belt 12, and then the PLC controller 11 starts the sub-controller 1 251 to make the electric suction cup 12 suck the packaging bag. After 2 seconds, the lifting motor starts again and moves upward to reset. After resetting, the rotating motor 3 starts again and drives the screw 3 to output in the reverse direction, thereby controlling the sliding member 24 to move in the opposite direction and in contact with the moving frame After stopping, the rotating motor starts again and drives the screw 141 to output in the reverse direction until the movable frame 21 slides to the right end of the guide groove 14 and stops. At this time, the electric suction cup 25 is just above the middle position of the electric suction cup 2 34. Subsequently, the lifting motor outputs downward again, driving the electric suction cup 25 to descend to the set height, and the sub-controller 251 stops working, so that the packaging bag falls on the middle position of the electric suction cup 2 34. Subsequently, the electric suction cup 25 moves up with the resetting of the lifting motor and resets to stop. After stopping, the movable frame 21 slides to the other side along the fixed groove 13 again and stops, so that the electric suction cup 25 stays on the side close to the conveyor belt 12.

[0064] Among them, the lifting distance of the lifting motor can be set in advance. The staff measures the distance between the reset position of the electric suction cup 25 (i.e., the highest position) and the position when the electric suction cup 25 contacts the packaging bag (i.e., the lowest position), and then controls it by setting the parameters of the lifting motor.

[0065] like Figure 3-7 As shown, the angle adjustment mechanism 3 includes a frame 31, a gear 131 and a rack 132;

[0066] It should be noted that when the angle adjustment mechanism 3 is in a horizontal state, the height of the electric suction cup 2 34 is on the same horizontal plane as the height of the conveyor belt 12, and the frame 31 is now on the limit seat 133. A position sensor (not shown in the figure) is embedded on the top wall of the limit seat 133. When the frame 31 falls on the limit seat 133, it is triggered and controlled to keep the frame 31 in a horizontal position and motionless.

[0067] Two symmetrically distributed screw rods 4 134 are installed in the fixed groove 13, and one end of the screw rod 4 134 is connected to a rotating motor 4 (not shown in the figure) built into the test bench 1. A rack 132 is provided on the outer surface of the screw rod 4 134 through threaded transmission. A convex bar connected to the rack 132 is provided on one side wall, and a groove matching the rack 132 and the convex bar is opened in the test bench 1 on one side of the fixed groove 13, so as to guide the movement direction of the rack 132. A gear 131 is meshed above the rack 132, and a synchronous shaft connected to the gear 131 with a key passes through the middle of the gear 131. One end of the synchronous shaft is fixed to the side wall of the frame 31 by snapping, and the other end is rotatably arranged in the groove wall of the fixed groove 13 through a bearing.

[0068] It should be further explained that the PLC controller 11 controls the start-up of the rotating motor 4, so that the screw 4 134 drives the rack 132 to move in a straight line, thereby causing the gear 131 to drive the frame 31 connected thereto to rotate synchronously, thereby allowing the frame 31 to achieve free adjustment of the angle.

[0069] A groove is provided in the middle of the top of the frame 31, in which an electric suction cup 2 34 with a rectangular cross-section is installed by screws, and a sub-controller 2 341 for controlling the electric suction cup 2 34 is installed on the bottom wall of the frame 31 by screws. The sub-controller 2 341 is connected to the PLC controller 11 by electrical signals. An adsorption area (not shown in the figure) is provided in the middle of the electric suction cup 2 34. The adsorption area is consistent with the size of the packaging bag, and the packaging bag falls exactly on the adsorption area after being lowered onto the electric suction cup 2 34.

[0070] It should be further explained that after the transfer mechanism 2 transports the packaging bag to the top of the electric suction cup 2 34, the lifting motor drives the packaging bag down to the electric suction cup 2 34. As the sub-controller 1 251 stops, the sub-controller 2 341 starts at the same time, thereby firmly sucking one side of the packaging bag to its side.

[0071] The frame 31 is also provided with a sealing strength auxiliary test assembly, which includes a side seat 1 32, a side seat 2 33 and an insertion rod;

[0072] There are two side seats 1 32 and 2 33, which are symmetrically mounted on the frame 31 by screws, and the side seats 1 32 and 2 33 are alternately distributed along the edge of the groove. The side seat 1 32 is provided with a side groove 1, and a guide rod 1 321 is welded between the inner walls of the side groove 1. A spring 1 is sleeved on the guide rod 1 321, and a sliding block 35 is slidably provided on the guide rod 1 321, and one end of the spring 1 contacts the side wall of the sliding block 35. The side seat 2 33 is symmetrically provided with two side grooves 2, and a guide rod 2 331 is welded between the inner walls of the two side grooves 2. A spring 2 is sleeved on the guide rod 2 331, and a sliding block 35 in contact with one end of the spring 2 is also slidably provided on the guide rod 2 331.

[0073] A slot 353 is provided on one side wall of the sliding block 35, and the rod is inserted between the slots 353 of the two opposite sliding blocks 35, and an infrared emitting tube 352 is embedded in the other side wall, and the slot 353 is arranged back to back with the infrared emitting tube 352. A button for controlling the start and stop of the infrared emitting tube 352 is provided on the sliding block 35, and a positioning slot 351 is provided on the top wall of the sliding block 35. In addition, an infrared receiving tube 36 matching the infrared emitting tube 352 is embedded on the inner wall in the middle position of side groove one and side groove two, and the infrared receiving tube 36 is connected to the PLC controller 11 through an electrical signal.

[0074] The side seat 1 32 and the side seat 2 33 are both connected with limiting screws through threads. The limiting screws are matched with the positioning grooves 351 on the sliding block 35, so that the sliding block 35 can be fixed at the position where the limiting screws are located.

[0075] It should be further explained that after the packaging bag is sucked by the electric suction cup 2 34, it is adjusted to a vertical direction by the angle adjustment mechanism 3, and then the other side of the packaging bag is sucked by the suction mechanism 6;

[0076] Then, if the transverse peeling process is being carried out, the suction mechanism 6 sucks the other side of the seal of the packaging bag, and the insertion rod is inserted between the sliding blocks 35 on the two side seats 32. By loosening the limit screw, the sliding block 35 can move elastically, and manual intervention is performed to control the insertion rod to move to the side of the seal being sucked;

[0077] If the longitudinal peeling process is being carried out, the suction mechanism 6 sucks the vertical center line of the packaging bag, and the middle position of the seal is also sucked. The insertion rod is inserted between the two opposing sliding blocks 35 on the two side seats, and by loosening the limit screw, the sliding blocks 35 can move elastically, and manually intervene and control the two insertion rods to move to the two sides of the extension line of the sucked middle position of the seal;

[0078] Then, through the cooperation of the adsorption mechanism 6 and the force adjustment mechanism 5, the sealed side of the packaging bag (the side is the composite film) is pulled to peel it off from the seal on the other side. As the degree of peeling becomes greater and greater, the seal on one side of the packaging bag is pulled and drives the insertion rod on one side to move synchronously, so that the sliding block 35 also moves accordingly. When the sliding block 35 moves to the position of the infrared receiving tube 36, the infrared receiving tube 36 receives the signal from the infrared transmitting tube 352 through the control of the matching signal, so that the PLC controller 11 stops pulling the peeling process and automatically records the time taken to peel to this position through the system. Finally, by comparing the time recorded for each packaging bag with the time used for medical packaging bags that meet the standards, the actual peeling strength of the packaging bag seal is obtained.

[0079] like Figure 8 As shown, the force adjustment mechanism 5 includes an adjustment frame 1 51 and an adjustment frame 2 52;

[0080] Two symmetrically arranged vertical slots are provided on the fixed frame 15, and a second screw 151 is installed in the vertical direction in the vertical slot. A second movable frame 4 with a "U"-shaped structure is also slidably provided on one side wall of the fixed frame 15. Two movable blocks (not shown in the figure) are welded on the side wall of the movable frame 4 facing the fixed frame 15 near the bottom. The movable blocks slide between the inner walls of the vertical slots, and the second screw 151 penetrates the movable blocks and cooperates with them in threaded transmission. A rotating motor 5 (not shown in the figure) connected to the screw 151 is installed between the inner walls of the fixed frame 15 at one end.

[0081] A fixed seat 1 41 and a fixed seat 2 42 are welded to the side wall of the other side of the movable frame 2 4. There are two fixed seats 1 41 and two fixed seats 2 42, and the two fixed seats 1 41 and the two fixed seats 2 42 are arranged opposite to each other. A rotating motor 6 and a rotating motor 7 (rotating motor 6 is located on the fixed seat 1 41) are respectively installed on the side walls of one of the fixed seats 1 41 and the fixed seat 2 42 by bolts. An adjusting frame 1 51 is rotatably arranged between the two fixed seats 1 41 through an axis, and the rotating motor 6 rotates and outputs the adjusting frame 1 51. An adjusting frame 2 52 is rotatably arranged between the two fixed seats 2 42 through an axis, and the rotating motor 7 rotates and outputs the adjusting frame 2 52.

[0082] Both the adjusting frame 1 51 and the adjusting frame 2 52 are arranged in an arc-shaped structure, and a slide 1 53 is slidably arranged between the outer walls of the adjusting frame 1 51, and a slide 2 54 is slidably arranged between the outer walls of the adjusting frame 2 52. A positioning member 55 with a rod-shaped structure is connected between the slide 1 53 and the slide 2 54 by a thread, and a through hole 1 and a through hole 2 are respectively opened on the adjusting frame 1 51 and the adjusting frame 2 52. The positioning member 55 is located through the through hole 1 and the through hole 2 and is in sliding contact with their inner walls.

[0083] It should be noted that, except for the positions where the outer wall of the positioning member 55 is connected to the slide seat 1 53 and the slide seat 2 54 , which are provided with corresponding external threads, the rest of the outer wall of the positioning member 55 is a smooth surface.

[0084] A cylinder seat is rotatably mounted on one side wall of the slide 2 54 , and the cylinder seat can be rotated and adjusted by 90 degrees. The motor that drives the cylinder seat is installed in the slide 2 54 (not shown in the figure), thereby changing the state of the electric suction cup 3 61 . An electric cylinder is fixedly mounted on one side wall of the cylinder seat by bolts, and the adsorption mechanism 6 is installed at the end of the output shaft of the electric cylinder.

[0085] It should be further explained that the rotating motor six or the rotating motor seven is started by the PLC controller 11, so that it can respectively drive the adjusting frame 1 51 and the adjusting frame 2 52 to rotate and adjust. When the adjusting frame 1 51 is rotated and adjusted, the angle direction of the force applied to the adsorption mechanism 6 in the horizontal direction can be changed, and at this time the slide 2 54 slides and adjusts along the adjusting frame 2 52; when the adjusting frame 2 52 is rotated and adjusted, the angle direction of the force applied to the adsorption mechanism 6 in the vertical direction can be changed, and at this time the slide 1 53 slides and adjusts along the adjusting frame 1 51. In addition, the state adjustment of the electric suction cup three 61 during horizontal peeling and vertical peeling can be achieved by adjusting the angle of the cylinder seat.

[0086] Before the peeling test is performed, the position of the movable frame 2 4 needs to be adjusted so that the adsorption mechanism 6 is adjusted to a position corresponding to the sealing position of the packaging bag, thereby facilitating the adsorption and fixation of the sealing portion.

[0087] The adsorption mechanism 6 includes an electric suction cup 3 61 and a mounting frame 62;

[0088] A sub-controller three 611 is fixed between the side walls of the mounting frame 62 by screws, and the sub-controller three 611 is connected to the PLC controller 11 by electrical signals. Two "T"-shaped brackets are also installed on one side wall of the mounting frame 62 by screws, and an electric suction cup three 61 is fixed between the two brackets by screws. The electric suction cup three 61 is a rectangular parallelepiped structure, and the electric suction cup three 61 and the sub-controller three 611 are electrically connected by wires.

[0089] A connecting ball 63 is sleeved on the end of the output shaft of the electric cylinder, and a connecting seat is welded on the side wall of the mounting frame 62. The connecting ball 63 is rotatably set between the inner walls of the connecting seat to achieve multi-angle adjustment. In addition, the connecting seat and the connecting ball 63 can be connected by electromagnetic adsorption, that is, a ball-shaped groove adapted to the connecting ball 63 is opened on the connecting seat, and a matching silicon steel sheet (not shown in the figure) is embedded on the groove wall of the ball-shaped groove. The connecting ball 63 is made of iron material, and a built-in power supply (not shown in the figure) for controlling the current passing through the silicon steel sheet is embedded in the connecting seat. The built-in power supply is connected to the PLC controller 11 through an electrical signal. By controlling the conduction of current on the silicon steel sheet, the silicon steel sheet generates suction on the connecting ball 63, firmly adsorbing it.

[0090] It should be further explained that when the seal of the packaging bag is adsorbed, slide 1 53 and slide 2 54 are located in the middle position on adjusting frame 1 51 and adjusting frame 2 52 respectively, and the two restrain each other, thereby ensuring the stability of the electric cylinder and connecting ball 63 in this state, and enabling them to move along a straight line with the output of the electric cylinder until they come into contact with the seal and adsorb it. After the seal is adsorbed, the activity of the connecting ball 63 is combined with the rotation adjustment of adjusting frame 1 51 or adjusting frame 2 52 to synchronously change the force direction of the electric cylinder, thereby achieving the peeling test effect of the seal under different angles.

[0091] Among them, before conducting relevant tests, the connecting ball 63 and the connecting seat are fixed as one by suction, so that the electric suction cup three remains in a horizontal state, thereby facilitating the adsorption process of sealing the packaging bag; during the process of adjusting the angle of the adjusting frame one and the adjusting frame two, the connecting ball 63 and the connecting seat are in a state of active connection. After the angle is adjusted, the connecting ball 63 again relies on the suction force to form a whole with the connecting seat.

[0092] Working principle:

[0093] First, the packaging bags are placed one by one on the conveyor belt 12 for transportation. The transfer mechanism 2 is controlled to move toward one side of the conveyor belt 12. When it slides to the guide groove 14 close to the end of the conveyor belt 12, the PLC controller 11 controls the conveyor belt 12 to pause. At the same time, the electric suction cup 1 25 on the transfer mechanism 2 grabs the packaging bag located directly below it. The transfer mechanism 2 then moves to the other side and lowers the electric suction cup 1 25, so that the grabbed packaging bag falls on the electric suction cup 2 34 and is adsorbed by it. Subsequently, the transfer mechanism 2 moves back to the other side and stops, and the conveyor belt 12 is started again for transportation.

[0094] Next, the control frame 31 is adjusted from a horizontal position to a vertical position, and the position of the movable frame 2 4 is adjusted in the vertical direction so that the electric suction cup 3 61 is aligned with the sealing position of the packaging bag. Then, the electric cylinder is used to make the electric suction cup 3 61 approach the sealing position of the packaging bag in a straight line direction, contact it, and absorb it;

[0095] Then, depending on the direction of the peeling test, whether it is horizontal peeling or vertical peeling, the insertion rod is installed between the corresponding sliding blocks 35 and moved to the side of the packaging bag seal. Then, by controlling the angle change of the force adjustment mechanism 5 and coordinating the pulling effect of the electric cylinder (i.e., the output shaft moves back), the peel strength test of the packaging bag seal at different angles is performed. The time consumed when peeling the same distance is tested, so as to evaluate the strength of the packaging bag seal.

[0096] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, electrical connections, or interconnected connections; they can refer to direct connections, internal connectivity between two components, or an interaction between two components. A person of ordinary skill in the art will be able to understand the meaning of the above terms in this application based on the specific circumstances.

[0097] The above is a detailed introduction to a sealing strength testing system for medical packaging bags provided in an embodiment of the present application. Specific examples are used herein 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 solutions and core ideas of the present application. Those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A seal strength testing system for medical packaging bags, characterized in that: include: A test bench (1), wherein the test bench (1) is arranged in a "T"-shaped structure, and a conveyor belt (12) is installed between the test bench and a display is installed on the top surface thereof. A PLC controller (11) is also installed on the side wall of the test bench (1), and a fixing groove (13) is also opened on the test bench (1); A transfer mechanism (2), wherein the transfer mechanism (2) is slidably adjusted along the length direction of the test bench (1), and an electric suction cup (25) that can be raised and lowered is installed on the transfer mechanism (2), and a sub-controller (251) connected thereto is provided on the top of the electric suction cup (25) to realize the process of grabbing and placing the packaging bag; An angle adjustment mechanism (3), the angle adjustment mechanism (3) comprising a frame (31), a second electric suction cup (34) being provided in the middle of the top of the frame (31), and a second sub-controller (341) connected to the second electric suction cup (34) being provided at the bottom thereof, the angle adjustment mechanism (3) being provided in the fixing groove (13) so that the frame (31) can be switched between horizontal and vertical states; A sealing strength auxiliary test component is also provided on the frame (31) for controlling the distance of peeling of the packaging bag seal, thereby judging the strength of the packaging bag seal by the time taken to peel the same distance; The sealing strength auxiliary test assembly includes a side seat 1 (32) and a side seat 2 (33), and both the side seat 1 (32) and the side seat 2 (33) are provided in pairs and are respectively mounted on the frame (31) by screws; The side seat (32) is provided with a side groove (1), a guide rod (321) is provided in the side groove (1), a spring (1) is sleeved on the guide rod (321), and a sliding block (35) is slidably provided on the guide rod (321), and one end of the spring (1) contacts the side wall of the sliding block (35); Two side grooves (2) are symmetrically provided on the side seat (33), and a guide rod (331) is provided in each side groove (2). A spring (2) is sleeved on the guide rod (331), and a sliding block (35) in contact with the spring (2) is also slidably provided on the guide rod (331); The sealing strength auxiliary test assembly also includes an insertion rod, a slot (353) is provided on one side wall of the sliding block (35), the insertion rod is inserted between the slots (353) of the two oppositely arranged sliding blocks (35), and an infrared emitting tube (352) is embedded on the other side wall of the sliding block (35), and a button connected to the infrared emitting tube (352) is provided on the top wall of the sliding block (35), and a positioning groove (351) is also provided on one side of the button on the top wall of the sliding block (35); The side seat 1 (32) and the side seat 2 (33) are both connected by a threaded limit screw, the limit screw is adapted to the positioning groove (351), and an infrared receiving tube (36) that matches the infrared transmitting tube (352) is embedded in the middle position of the inner wall of one side of the side groove 1 and the side groove 2; A force regulating mechanism (5), wherein a vertically arranged fixed frame (15) is further installed on the top wall of the test bench (1), a movable frame 2 (4) is slidably arranged on one side wall of the fixed frame (15), and the force regulating mechanism (5) is installed on the other side wall of the movable frame 2 (4), and an electric cylinder which is adjusted synchronously with the force regulating mechanism (5) is further provided, and a connecting ball (63) is connected to the end of the output shaft of the electric cylinder, so that the force regulating mechanism (5) adjusts the direction of the force of the electric cylinder, and the flexibility of the connecting ball (63) enables the direction of the pulling force acting on the adsorption mechanism (6) to change the angle position; The adsorption mechanism (6) is connected to the output shaft end of the electric cylinder via a connecting ball (63) and is used to adsorb the seal of the packaging bag, thereby driving the seal on that side to perform a peeling test.

2. A sealing strength testing system for medical packaging bags according to claim 1, characterized in that: The transfer mechanism (2) includes a mobile frame (21) and a mobile frame (23). Two symmetrically distributed guide grooves (14) are provided on the top surface of the test bench (1). A screw (141) is installed in the guide groove (14). The two ends of the mobile frame (21) are respectively slidably arranged along the inner walls of the guide grooves (14) on both sides, and the screw (141) passes through the interior of the two ends of the mobile frame (21) and is threadedly engaged therewith. The vertical side walls on both sides of the movable frame (21) are provided with side frames (22) connected thereto as a whole, the side frames (22) are provided with gears (221), a movable frame (23) is provided between the side walls of the movable frame (21) for sliding, and the gears (221) on both sides are respectively engaged with the side walls on both sides of the movable frame (23); The movable frame (23) is provided in a "U"-shaped structure, and a sliding member (24) is provided between the side walls thereof for sliding movement. The sliding member (24) is provided in an "I"-shaped structure. Two lifting motors are installed on the top wall of the sliding member (24). The output shafts of the lifting motors pass through the sliding member (24) and are connected to the top wall of the electric suction cup (25).

3. A sealing strength testing system for medical packaging bags according to claim 2, characterized in that: The angle adjustment mechanism (3) further comprises a gear (131) and a rack (132), two symmetrically distributed screw rods (134) are installed in the fixed groove (13), the screw rods (134) pass through the rack (132) and are threadedly coupled thereto, a convex strip connected thereto is provided on one side wall of the rack (132), the gear (131) is meshed with the rack (132), and a synchronous shaft connected thereto by a key is passed through the middle of the gear (131), one end of the synchronous shaft is fixed to the side wall of the frame (31) by a snap connection, and the other end thereof is rotatably arranged in the groove wall of the fixed groove (13); When the angle adjustment mechanism (3) is in a horizontal state, the height of the second electric suction cup (34) and the height of the conveyor belt (12) are on the same horizontal plane.

4. A sealing strength testing system for medical packaging bags according to claim 3, characterized in that: The fixing frame (15) is provided with two symmetrically arranged vertical slots, in which a second screw (151) is installed in the vertical direction; Two fixing seats 1 (41) and two fixing seats 2 (42) are welded on one side wall of the movable frame 2 (4); The force adjustment mechanism (5) includes an adjustment frame 1 (51) and an adjustment frame 2 (52), both of which are arranged in an arc-shaped structure. The adjustment frame 1 (51) is rotatably arranged between two fixed seats 1 (41), and the adjustment frame 2 (52) is rotatably arranged between two fixed seats 2 (42). A through hole 1 and a through hole 2 are respectively opened on the adjustment frame 1 (51) and the adjustment frame 2 (52), and a slide seat 1 (53) is slidably arranged between the outer walls of the adjustment frame 1 (51), and a slide seat 2 (54) is slidably arranged between the outer walls of the adjustment frame 2 (52), and a positioning member is connected between the slide seat 1 (53) and the slide seat 2 (54), and the positioning member slides between the inner walls of the through hole 1 and the through hole 2; Among them, a cylinder seat is also rotatably mounted on one side wall of the slide seat 2 (54), and the electric cylinder is fixed to the side wall of the cylinder seat by bolts.

5. The sealing strength testing system for medical packaging bags according to claim 4, characterized in that: The adsorption mechanism (6) includes an electric suction cup three (61) and a mounting frame (62), a sub-controller three (611) is provided between the side walls of the mounting frame (62), and two "T"-shaped brackets are provided on the mounting frame (62), the electric suction cup three (61) is fixed between the brackets on both sides, and the sub-controller three (611) and the electric suction cup three (61) are electrically connected; A connecting seat is welded on one side wall of the mounting frame (62), and a connecting ball (63) is arranged in the connecting seat.

6. The seal strength testing system for medical packaging bags according to claim 5, characterized in that: When the electric suction cup three (61) moves toward the sealing side of the packaging bag, the connecting ball (63) and the connecting seat are in a state of being connected as a whole. When the adjusting frame one (51) or the adjusting frame two (52) is rotated and adjusted, the connecting ball (63) and the connecting seat are in a state of being movably connected. After the adjusting frame one (51) or the adjusting frame two (52) is rotated and adjusted, the connecting ball (63) and the connecting seat are in a state of being connected as a whole.

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