Packaging box high temperature resistance testing device based on mechanical sensor

Abstract

The invention discloses a packaging box high temperature resistance testing device based on a mechanical sensor, and relates to the technical field of packaging box testing. Comprising a testing chamber and a mounting table, a chain plate conveying mechanism used for conveying packaging boxes is mounted on the mounting table, and the testing chamber is mounted above the chain plate conveying mechanism through a supporting frame. By arranging the testing mechanism, when the carrying base moves to the testing position, the bottom ends of the detection rods abut against the top face of the packaging box based on the acting force of the first pressing springs, the packaging box is heated based on work of the heating module, and due to the fact that the detection rods distributed in an array mode make contact with the surface of the packaging box, when the packaging box deforms or is structurally softened, the packaging box is heated; the detection rod presses the packaging box and moves downwards under the acting force of the first pressure spring, so that the traction rope is pulled through the rope ring, and the detection value of the tension sensor assembly is changed; according to the scheme, multi-point testing on the surface of the packaging box can be achieved, on the basis, the number of the tension sensor assemblies is reduced, and the testing requirement is met.

Description

Technical Field

[0001] This invention relates to the field of packaging box testing technology, and in particular to a packaging box high-temperature resistance testing device based on a mechanical sensor. Background Technology

[0002] In modern industrial production and logistics, packaging boxes serve as crucial protective containers, and their quality and performance are paramount. Especially in specialized applications such as the food, pharmaceutical, and electronics industries, packaging boxes require excellent high-temperature resistance to effectively protect the contents from damage in high-temperature environments. Accurately assessing the high-temperature resistance of packaging boxes has become an indispensable part of the production process.

[0003] Traditional methods for testing the high-temperature resistance of packaging boxes have several limitations. First, they often only test a single point or a few points on the box, failing to comprehensively reflect the stress and deformation characteristics across the entire surface. Second, existing testing equipment is typically complex, expensive, and inconvenient to operate, making continuous testing difficult.

[0004] A search revealed Chinese patent application CN202223225325.9, which discloses a high-temperature thermohardness testing device for epoxy molding compounds. The device includes a testing chamber with a motor fixed to its bottom. Inside the chamber is a rotating rod with a rotating block fixed to its top. Fixing frames are fixed to both sides of the rotating block. The testing device in this document has the following shortcomings: it cannot perform multi-point testing and it is difficult to achieve continuous testing with automatic feeding. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a high-temperature resistance testing device for packaging boxes based on mechanical sensors.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A high-temperature resistance testing device for packaging boxes based on mechanical sensors includes a testing chamber and a mounting platform. A chain conveyor mechanism for transporting packaging boxes is mounted on the mounting platform. The testing chamber is mounted above the chain conveyor mechanism via a support frame. A testing mechanism is provided inside the testing chamber, and the testing mechanism includes:

[0008] A carrier, on which a clamping assembly is mounted, is used to secure the packaging box;

[0009] The testing room is located above the test room;

[0010] The test base has a sleeve fixed at its bottom. Multiple sleeves are arranged in an array. The sleeves slide up and down on the inner wall of the bottom of the test chamber. The bottom end of the sleeve passes through the test chamber and enters the test chamber.

[0011] The detection rod is slidably connected to the inner wall of the sleeve. An installation plate is mounted on the detection rod, and the installation plate and the detection base are connected by a first compression spring.

[0012] The rope loop is fixed to the top of the detection rod;

[0013] The mounting plate is fixed in the detection chamber. A pulley frame is installed in the detection chamber. A fixed pulley is rotatably mounted on the pulley frame via an axle. A traction rope is installed on one side of the mounting plate. The traction rope passes through the rope loops in the same vertical column and is connected to the end plate via the fixed pulley. A horizontally linearly distributed tension sensor assembly is installed in the detection chamber. The tension sensor assembly and the end plate are connected by a connecting spring. The inner diameter of the rope loops is adapted to the diameter of the traction rope.

[0014] The linkage component, based on the movement of the carrier, causes the bottom end of the detection rod to press against the top surface of the packaging box by the force of the first compression spring;

[0015] Heating modules are installed in the test chamber, with the heating modules on both sides arranged symmetrically.

[0016] As a preferred embodiment of the present invention: a guide column is fixed in the detection chamber, the detection base slides up and down on the outer wall of the guide column, the sleeve slides on the inner wall of the detection chamber, and a height adjustment stud is rotatably installed in the detection chamber, the height adjustment stud being threaded to the inner wall of the detection base.

[0017] As a preferred embodiment of the present invention: two guide frames are installed on both sides of the carrier, the two ends of the guide frames are bent downwards, and a recessed part is provided in the middle of the guide frame, the recessed part is V-shaped or U-shaped; the linkage component includes a collar, the collar corresponds one-to-one with the detection rod, a limit piece is fixed on the detection rod, the collar is sleeved on the outside of the detection rod, and the collar is located below the limit piece, the collar is connected by a connecting frame, and the end of the connecting frame is movably mounted with an installation wheel, the installation wheel is located on the movement path of the guide frame, when the packaging box moves to the test position, the installation wheel rolls to the recessed part;

[0018] The initial height of the bottom end of the detection rod is lower than the height of the top surface of the packaging box. The initial height of the mounting wheel is lower than the height of the top of the guide frame, but higher than the height of the end of the guide frame. When the mounting wheel rolls on the top of the guide frame, the collar pushes the limiting piece upward to raise the height of the bottom end of the detection rod to above the height of the top surface of the packaging box. When the mounting wheel rolls in the recess, the height of the collar decreases, so that the bottom end of the detection rod contacts the top surface of the packaging box.

[0019] As a preferred embodiment of the present invention: the carrier is provided with a slide rail, a mounting base is slidably connected to the slide rail, a longitudinal adjusting screw is rotatably mounted on the carrier, the longitudinal adjusting screw is threadedly connected to the inner wall of the mounting base, and clamping components are provided on both sides of the mounting base.

[0020] As a preferred embodiment of the present invention, the clamping assembly includes:

[0021] The slider has a longitudinal groove on its base, and the slider is slidably connected to the longitudinal groove.

[0022] The anti-slip pressure frame slides on the inner wall of the slider. The anti-slip pressure frame and the slider are connected by an anti-slip spring. Based on the force of the anti-slip spring, the anti-slip pressure frame presses against the surface of the carrier.

[0023] The clamping frame has one end that slides on the inner wall of the slider, and the other end of the clamping frame has an L-shaped structure.

[0024] A lateral adjusting screw is threaded to the inner wall of the slider, and one end of the lateral adjusting screw is rotatably mounted on the inner wall of the clamping frame.

[0025] As a preferred embodiment of the present invention: a side detection mechanism is installed on the slider, the side detection mechanism includes a sliding sleeve, a connecting column is fixed on one slider, the connecting column is slidably connected to the inner wall of another slider, the sliding sleeve slides on the outer wall of the connecting column, a first fixing screw for fixing the sliding sleeve to the connecting column is threadedly connected to one side of the sliding sleeve, a stand is installed on the top of the sliding sleeve, a lifting slide is slidably connected to the outside of the stand, and a second fixing screw for fixing the lifting slide to the stand is threadedly connected to the inner wall of one side of the lifting slide; an installation tube is installed on the lifting slide, a heat transfer pressure rod is slidably connected to the installation tube, a heat transfer ball is fixed at one end of the heat transfer pressure rod, the position of the heat transfer ball is adapted to the heating module, and the other end of the heat transfer pressure rod passes through the installation tube; an installation block is slidably installed on the outside of the heat transfer pressure rod, a fixing knob for fixing the installation block to the heat transfer pressure rod is threadedly connected to the inner wall of one side of the installation block, and the installation block and the installation tube are connected by a second compression spring.

[0026] As a preferred embodiment of the present invention: a spherical body is provided on the outer side of the mounting tube, and a spherical cavity is provided on the inner side of the lifting slide, and the mounting tube is movably mounted in the spherical cavity through the spherical body.

[0027] As a preferred embodiment of the present invention: a partition is slidably connected to the inner wall of the top of the test chamber, and an electric telescopic cylinder is installed on the top of the test chamber via a bracket. The output end of the electric telescopic cylinder is fixed to one side of the partition. When the partition is inserted into the test chamber, it divides the test chamber into a detection chamber and a cooling chamber. A cooling module is installed on the top of the test chamber, and the bottom of the cooling module is located inside the cooling chamber.

[0028] As a preferred embodiment of the present invention: both ends of the test chamber are provided with blocking doors, and the sides of the blocking doors are fixed with gate frames. A guide bracket is installed on the test chamber, and the gate frame slides up and down on the inner wall of the guide bracket. The gate frame and the guide bracket are connected by a return spring. A linkage inclined frame is fixed on one side of the outer wall of the blocking door, and multiple rollers are installed on one side of the linkage inclined frame. The positions of the linkage inclined frame and the rollers are located on the movement path of the guide frame.

[0029] As a preferred embodiment of the present invention: the chain plate of the chain conveyor mechanism has equidistantly distributed assembly holes, and the bottom of the carrier is provided with mounting posts, and the carrier is detachably installed in the assembly holes of the chain plate through the mounting posts.

[0030] The beneficial effects of this invention are as follows:

[0031] 1. This invention, through the setting of a testing mechanism, enables the bottom end of the detection rod to press against the top surface of the packaging box based on the force of the first compression spring when the carrier moves to the testing position. Based on the operation of the heating module, the packaging box is heated. During this process, due to the array-distributed detection rods contacting the surface of the packaging box, when the packaging box deforms or its structure softens, the detection rods, under the force of the first compression spring, press the packaging box and move downwards. This causes the traction rope to be pulled through the moving rope loops, thereby changing the detection value of the tension sensor assembly, which facilitates judgment. This solution can realize multi-point testing of the surface of the packaging box, and on this basis, reduces the number of tension sensor assemblies, thus meeting the testing requirements.

[0032] 2. By setting up a detection base and height adjustment studs, the present invention can adjust the position of the detection base by turning the height adjustment studs according to actual needs, thereby changing the initial position of the detection rod to meet the detection requirements of packaging boxes of different sizes.

[0033] 3. By setting up a linkage component, the present invention can guide the connecting frame with a guide frame when the carrier is transported by the chain conveyor mechanism, thereby raising the detection rod above the packaging box. When the mounting wheel moves into the recessed part, the structure descends, so that the detection rod can press against the top surface of the packaging box based on the force of the first compression spring, so as to facilitate the compression test.

[0034] 4. This invention, by setting up a side detection mechanism, can adjust and fix the position of the sliding sleeve and the lifting slide. One end of the heat transfer pressure rod is pressed against the side of the packaging box, the position of the mounting block is adjusted, and it is fixed by a fixing knob, thereby adjusting the deformation degree of the second clamping spring to achieve the purpose of adjusting the pressure of the heat transfer pressure rod on the side of the packaging box. When the structure moves to the detection position, the heating module works, and the heat transfer ball and heat transfer pressure rod can better transfer heat to heat the points on the side of the packaging box. At the same time, due to the presence of the second clamping spring, the pressure of the heat transfer pressure rod can be used to test whether the packaging box is easily deformed under this condition. This solution is beneficial for targeted point testing of the packaging box and meets different testing needs.

[0035] 5. By setting up structures such as a blocking gate and a linkage inclined frame, the present invention can push the blocking gate upward along the sliding direction of the gantry when the carrier moves by using the contact between the guide frame and the rollers, thereby realizing the function of automatic obstacle avoidance of the blocking gate. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the high-temperature resistance testing device for packaging boxes based on mechanical sensors proposed in this invention.

[0037] Figure 2 This is a cross-sectional structural schematic diagram of the test chamber of a packaging box high-temperature resistance testing device based on a mechanical sensor proposed in this invention;

[0038] Figure 3 This is a schematic diagram of the testing mechanism of a packaging box high-temperature resistance testing device based on a mechanical sensor proposed in this invention;

[0039] Figure 4 This is a cross-sectional schematic diagram of the detection base of a packaging box high-temperature resistance testing device based on a mechanical sensor proposed in this invention;

[0040] Figure 5 This is a schematic diagram of the structure of a packaging box high-temperature resistance testing device based on a mechanical sensor, where the carrier and chain plate are separated.

[0041] Figure 6 This is a schematic diagram of the carrier and mounting base of a packaging box high-temperature resistance testing device based on a mechanical sensor proposed in this invention;

[0042] Figure 7 This is a schematic diagram of the lifting slide and spherical cross-section of a packaging box high-temperature resistance testing device based on a mechanical sensor proposed in this invention.

[0043] Figure 8 For the present invention Figure 2 A magnified view of a portion of the image;

[0044] Figure 9 For the present invention Figure 7 A magnified view of a portion of the image.

[0045] In the diagram: 1-Test chamber; 2-Cooling module; 3-Mounting platform; 4-Electric telescopic cylinder; 5-Baffle; 6-Detection chamber; 7-Assembly hole; 8-Guide frame; 9-Chain conveyor mechanism; 10-Carrier; 11-Gantry; 12-Roller; 13-Linkage inclined frame; 14-Blocking door; 15-Guide bracket; 16-Heating module; 17-Pulley frame; 18-Guide column; 19-Packaging box; 20-Longitudinal adjusting screw; 21-Tension sensor assembly; 22-Connecting spring; 23-Fixed pulley; 24-Mounting plate; 25-Rope loop; 26-Traction rope; 27-Height adjusting stud; 28-Mounting plate; 29-First 30-Pressure spring; 31-Detection base; 32-Sleeve; 33-Limiting plate; 34-Detection rod; 35-Mounting wheel; 36-Collar ring; 37-Fixing knob; 38-Connecting column; 39-Heat transfer ball; 40-Recess; 41-Longitudinal groove; 42-Mounting column; 43-Mounting seat; 44-Clamping frame; 45-Upright frame; 46-Heat transfer pressure rod; 47-Sliding sleeve; 48-Transverse adjusting screw; 49-Slider; 50-Annular bracket; 51-Lifting slide; 52-Spherical body; 53-Mounting tube; 54-Second pressure spring; 55-Mounting block; 56-Anti-slip pressure frame; 57-Anti-slip spring. Detailed Implementation

[0046] The technical solution of the present invention will be further described in detail below with reference to specific embodiments.

[0047] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0048] Example 1:

[0049] A high-temperature resistance testing device for packaging boxes based on mechanical sensors, such as... Figure 1-7 As shown, the system includes a test chamber 1 and a mounting platform 3. A chain conveyor mechanism 9 for transporting packaging boxes 19 is mounted on the mounting platform 3. The test chamber 1 is mounted above the chain conveyor mechanism 9 via a support frame. The gap between the test chamber 1 and the chain conveyor mechanism 9 should be minimized to reduce heat leakage. A testing mechanism is installed inside the test chamber 1, and the testing mechanism includes:

[0050] Carrier 10, on which a clamping assembly is mounted, the clamping assembly is used to secure the packaging box 19;

[0051] Testing chamber 6 is located above testing chamber 1;

[0052] The detection base 30 has a sleeve 31 fixed at its bottom. Multiple sleeves 31 are arranged in an array. The sleeves 31 slide up and down on the inner wall of the bottom of the detection chamber 6. The bottom end of the sleeve 31 passes through the detection chamber 6 and enters the test chamber 1.

[0053] The detection rod 33 is slidably connected to the inner wall of the sleeve 31. An installation piece 24 is installed on the detection rod 33. The installation piece 24 and the detection base 30 are connected by a first compression spring 29.

[0054] Rope loop 25, which is fixed to the top of the detection rod 33;

[0055] Mounting plate 28 is fixed inside the testing chamber 6. A pulley frame 17 is installed inside the testing chamber 6. A fixed pulley 23 is rotatably mounted on the pulley frame 17 via a shaft. A traction rope 26 is installed on one side of the mounting plate 28. The traction rope 26 passes through the rope loops 25 in the same vertical column and then connects to the end plate via the fixed pulley 23. A horizontally linearly distributed tension sensor assembly 21 is installed inside the testing chamber 6. The tension sensor assembly 21 and the end plate are connected by a connecting spring 22. The inner diameter of the rope loops 25 is adapted to the diameter of the traction rope 26.

[0056] The linkage component, based on the movement of the carrier 10, causes the bottom end of the detection rod 33 to press against the top surface of the packaging box 19 by the force of the first compression spring 29;

[0057] The test chamber 1 is equipped with heating modules 16, which are symmetrically arranged on both sides; the heating modules 16 can adopt the heating structure commonly used in the prior art, which will not be described in detail here;

[0058] By setting up a testing mechanism, when the carrier 10 moves to the testing position, the bottom end of the detection rod 33 presses against the top surface of the packaging box 19 based on the force of the first compression spring 29. Based on the operation of the heating module 16, the packaging box 19 is heated. During this period, since the array-distributed detection rods 33 are in contact with the surface of the packaging box 19, when the packaging box 19 deforms or its structure softens, the detection rods 33, under the force of the first compression spring 29, press the packaging box 19 and move downward. Since the inner diameter of the rope loop 25 is matched with the diameter of the traction rope 26, when any rope loop 25 moves, it will pull the traction rope 26, thereby causing the detection value of the tension sensor assembly 21 to change. The change in the detection value of the tension sensor assembly 21 (the detection value of the tension sensor assembly 21 during the heating process has changed compared to the detection value at the moment of the start of heating) is judged as a test failure. This solution can realize multi-point testing of the surface of the packaging box 19. On this basis, the number of tension sensor assemblies 21 is reduced, thus meeting the testing requirements.

[0059] This solution aims to determine product quality by analyzing sensor readings. Let X be the sensor reading after the detection rod contacts the packaging box, and t be the reading after a set time t during the heating process. t If X t If the value of -X is greater than the set threshold, the result of the detection is output as unqualified. Compared with the existing technology, which uses telescopic rods or other hydraulic pressing devices for detection, the advantage of the solution in this application is that it can realize multi-point detection. In the existing technology, if telescopic rods and other devices want to realize multi-point detection, multiple sets of telescopic rods and sensors must be set up, which will inevitably lead to an increase in cost. Moreover, when multiple sets of telescopic rods and sensors are arranged, there will be many limitations due to the overly dense structure.

[0060] To facilitate adjustment of the initial position of the structure; such as Figure 4 As shown, a guide column 18 is fixed inside the detection chamber 6, the detection base 30 slides up and down on the outer wall of the guide column 18, the sleeve 31 slides on the inner wall of the detection chamber 6, and a height adjustment stud 27 is rotatably installed inside the detection chamber 6. The height adjustment stud 27 is threadedly connected to the inner wall of the detection base 30.

[0061] By setting up structures such as the detection base 30 and the height adjustment stud 27, the position of the detection base 30 can be adjusted by turning the height adjustment stud 27 according to actual needs, thereby changing the initial position of the detection rod 33 to meet the detection requirements of packaging boxes 19 of different sizes.

[0062] Furthermore, the pulley frame 17, tension sensor assembly 21, and mounting plate 28 installed on the inner wall of the detection chamber 6 can be adjusted to be installed on the detection base 30. Similarly, the situation of the packaging box 19 can be judged based on the changes in the detection data, which will not be elaborated here.

[0063] To ensure reliable contact between each testing rod 33 and the top surface of the packaging box 19 during testing; such as Figure 3 , Figure 4 As shown, two guide frames 8 are installed on both sides of the carrier 10. The two ends of the guide frames 8 are bent downwards, and a recess 40 is provided in the middle of the guide frame 8. The recess 40 has a V-shaped or U-shaped structure. The linkage component includes a collar 36, which corresponds one-to-one with the detection rod 33. A limiting piece 32 is fixed on the detection rod 33. The collar 36 is sleeved on the outside of the detection rod 33 and is located below the limiting piece 32. The collar 36 is connected by a connecting frame 34. An installation wheel 35 is movably installed at the end of the connecting frame 34. The installation wheel 35 is located on the movement path of the guide frame 8. When the packaging box 19 moves to the test position, the installation wheel 35 rolls to the recess 40.

[0064] The initial height of the bottom end of the detection rod 33 is lower than the height of the top surface of the packaging box 19. The initial height of the mounting wheel 35 is lower than the height of the top of the guide frame 8, but higher than the height of the end of the guide frame 8. When the mounting wheel 35 rolls on the top of the guide frame 8, the collar 36 pushes the limiting piece 32 upward to raise the height of the bottom end of the detection rod 33 to above the height of the top surface of the packaging box 19. When the mounting wheel 35 rolls in the recess 40, the height of the collar 36 decreases, so that the bottom end of the detection rod 33 contacts the top surface of the packaging box 19.

[0065] By setting up a linkage component, when the carrier 10 is conveyed by the chain conveyor mechanism 9, the guide frame 8 can guide the connecting frame 34, thereby raising the detection rod 33 above the packaging box 19. When the mounting wheel 35 moves into the recess 40, the structure descends, so that the detection rod 33 can press against the top surface of the packaging box 19 based on the force of the first compression spring 29, so as to facilitate the compression test.

[0066] Preferably, the bottom end of the detection rod 33 has an arc-shaped structure.

[0067] To facilitate adjusting the position of the packaging box 19 on the carrier 10; such as Figure 6 As shown, the carrier 10 is provided with a slide rail, and a mounting base 43 is slidably connected to the slide rail. A longitudinal adjusting screw 20 is rotatably mounted on the carrier 10. The longitudinal adjusting screw 20 is threadedly connected to the inner wall of the mounting base 43. Clamping components are provided on both sides of the mounting base 43.

[0068] To facilitate clamping and securing the packaging box 19; such as Figure 6 , Figure 7 As shown, the clamping assembly includes:

[0069] The slider 49 is slidably connected to the longitudinal groove 41 on the carrier 10.

[0070] Anti-slip pressure frame 56 slides on the inner wall of slider 49. Anti-slip pressure frame 56 and slider 49 are connected by anti-slip spring 57. Based on the force of anti-slip spring 57, anti-slip pressure frame 56 presses against the surface of carrier 10.

[0071] The clamping frame 44 has one end that slides on the inner wall of the slider 49, and the other end of the clamping frame 44 has an L-shaped structure.

[0072] A lateral adjusting screw 48 is threadedly connected to the inner wall of the slider 49, and one end of the lateral adjusting screw 48 is rotatably mounted on the inner wall of the clamping frame 44.

[0073] By setting up the clamping assembly, the anti-slip pressure frame 56 can be pulled open, the position of the slider 49 can be adjusted, the anti-slip pressure frame 56 can be released, and the position of the slider 49 can be fixed by the anti-slip spring 57 and the anti-slip pressure frame 56, thereby adjusting the longitudinal position of the clamping frame 44. Then, the lateral adjustment screw 48 can be turned to adjust the lateral position of the clamping frame 44, thereby clamping and fixing the packaging box 19.

[0074] To better inspect the sides of the packaging box; such as Figure 3 , Figure 6 , Figure 7 As shown, a side detection mechanism is installed on the slider 49. The side detection mechanism includes a sliding sleeve 47. A connecting post 38 is fixed on one slider 49, and the connecting post 38 is slidably connected to the inner wall of another slider 49. The sliding sleeve 47 slides on the outer wall of the connecting post 38. A first fixing screw for fixing the sliding sleeve 47 to the connecting post 38 is threadedly connected to one side of the sliding sleeve 47. A stand 45 is installed on the top of the sliding sleeve 47. A lifting slide 51 is slidably connected to the outer side of the stand 45. A lifting slide 51 is threadedly connected to the inner wall of one side of the lifting slide 51 for fixing the lifting slide 51 to the stand 45. The second fixing screw on 5; the lifting slide 51 is equipped with an installation tube 53, and a heat transfer pressure rod 46 is slidably connected in the installation tube 53. One end of the heat transfer pressure rod 46 is fixed with a heat transfer ball 39, and the position of the heat transfer ball 39 is adapted to the heating module 16. The other end of the heat transfer pressure rod 46 passes through the installation tube 53. An installation block 55 is slidably installed on the outside of the heat transfer pressure rod 46. A fixing knob 37 for fixing the installation block 55 to the heat transfer pressure rod 46 is connected to the inner wall of one side of the installation block 55 by a thread. The installation block 55 and the installation tube 53 are connected by a second clamping spring 54.

[0075] By setting up a side detection mechanism, the positions of the sliding sleeve 47 and the lifting slide 51 can be adjusted and fixed. One end of the heat transfer pressure rod 46 is pressed against the side of the packaging box 19, the position of the mounting block 55 is adjusted, and it is fixed by the fixing knob 37, thereby adjusting the deformation degree of the second clamping spring 54, so as to adjust the pressure of the heat transfer pressure rod 46 on the side of the packaging box 19. When the structure moves to the detection position, the heating module 16 works, and the heat transfer ball 39 and the heat transfer pressure rod 46 can better transfer heat to heat the side points of the packaging box 19. At the same time, due to the presence of the second clamping spring 54, the pressure of the heat transfer pressure rod 46 can be used to test whether the packaging box 19 is easy to deform under this condition. This solution is conducive to targeted point testing of the packaging box 19 and meets different testing needs.

[0076] To facilitate adjustment of the detection position on the side; such as Figure 7 As shown, a spherical body 52 is provided on the outer side of the mounting tube 53, and a spherical cavity is provided on the inner side of the lifting slide 51. The mounting tube 53 is movably installed in the spherical cavity through the spherical body 52.

[0077] By setting up structures such as the spherical body 52, the deflection angles of the mounting tube 53 and the heat transfer pressure rod 46 can be changed, making it easier to contact the packaging box 19 from different directions for testing, thus improving testing flexibility.

[0078] As an alternative, one end of the mounting tube 53 is fixed with an annular bracket 50, and an annular elastic membrane is connected between the annular bracket 50 and the lifting slide 51, so that the structure can be reset based on the rebound force of the annular elastic membrane.

[0079] To facilitate cooling; such as Figure 2 As shown, a partition 5 is slidably connected to the inner wall of the top of the test chamber 1. An electric telescopic cylinder 4 is installed on the top of the test chamber 1 via a bracket. The output end of the electric telescopic cylinder 4 is fixed to one side of the partition 5. When the partition 5 is inserted into the test chamber 1, it divides the test chamber 1 into a detection chamber and a cooling chamber. A cooling module 2 is installed on the top of the test chamber 1. The bottom of the cooling module 2 is located inside the cooling chamber.

[0080] The specific structure of the cooling module 2 can adopt the refrigeration device commonly used in the prior art. Since it is not the focus of this invention, it will not be described in detail.

[0081] To improve airtightness; such as Figure 2 As shown, both ends of the test chamber 1 are provided with blocking doors 14, and the sides of the blocking doors 14 are fixed with gate frames 11. The test chamber 1 is equipped with a guide bracket 15, and the gate frame 11 slides up and down on the inner wall of the guide bracket 15. The gate frame 11 and the guide bracket 15 are connected by a return spring. A linkage inclined frame 13 is fixed on one side of the outer wall of the blocking door 14. Multiple rollers 12 are installed on one side of the linkage inclined frame 13. The positions of the linkage inclined frame 13 and the rollers 12 are located on the movement path of the guide frame 8.

[0082] By setting up structures such as the blocking gate 14 and the linkage inclined frame 13, when the carrier 10 moves, the guide frame 8 contacts the roller 12 and pushes the blocking gate 14 upward along the sliding direction of the gantry 11, thereby realizing the function of automatic avoidance of the blocking gate 14.

[0083] To facilitate the assembly and disassembly of the carrier 10; such as Figure 5 As shown, the chain conveyor mechanism 9 has equidistantly distributed assembly holes 7 on its chain plate, and the base 10 has a mounting post 42 at its bottom. The base 10 is detachably installed in the assembly holes 7 of the chain plate through the mounting post 42.

[0084] For the parts not disclosed in detail in this invention, those skilled in the art can ensure the smooth implementation of the solution of this invention based on common sense, normal logical thinking and existing technology.

[0085] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A high-temperature resistance testing device for packaging boxes based on mechanical sensors, characterized in that, It includes a test chamber (1) and a mounting platform (3). A chain conveyor mechanism (9) for conveying packaging boxes (19) is installed on the mounting platform (3). The test chamber (1) is mounted above the chain conveyor mechanism (9) via a support frame. A test mechanism is provided inside the test chamber (1). The test mechanism includes: A carrier (10) is provided with a clamping assembly for securing a packaging box (19). Testing chamber (6), which is located above test chamber (1); The detection base (30) has a sleeve (31) fixed at the bottom. Multiple sleeves (31) are arranged in an array. The sleeves (31) slide up and down on the inner wall of the bottom of the detection chamber (6). The bottom end of the sleeve (31) passes through the detection chamber (6) and enters the test chamber (1). The detection rod (33) is slidably connected to the inner wall of the sleeve (31). An installation piece (24) is installed on the detection rod (33). The installation piece (24) and the detection base (30) are connected by a first compression spring (29). A rope ring (25) is fixed at the top of the detection rod (33). Mounting plate (28) is fixed inside the testing chamber (6). A pulley frame (17) is installed inside the testing chamber (6). A fixed pulley (23) is rotatably mounted on the pulley frame (17) via a shaft. A traction rope (26) is installed on one side of the mounting plate (28). The traction rope (26) passes through the rope loops (25) in the same vertical column and is connected to the end plate via the fixed pulley (23). A horizontally linearly distributed tension sensor assembly (21) is installed inside the testing chamber (6). The tension sensor assembly (21) and the end plate are connected by a connecting spring (22). The inner diameter of the rope loop (25) is matched with the diameter of the traction rope (26). The linkage component, based on the movement of the carrier (10), causes the bottom end of the detection rod (33) to press against the top surface of the packaging box (19) based on the force of the first compression spring (29); The test chamber (1) is equipped with heating modules (16), and the heating modules (16) on both sides are symmetrically arranged.

2. The high-temperature resistance testing device for packaging boxes based on mechanical sensors according to claim 1, characterized in that, The test chamber (6) is fixed with a guide column (18), the test base (30) slides up and down on the outer wall of the guide column (18), the sleeve (31) slides on the inner wall of the test chamber (6), and a height adjustment stud (27) is rotatably installed in the test chamber (6). The height adjustment stud (27) is threadedly connected to the inner wall of the test base (30).

3. The high-temperature resistance testing device for packaging boxes based on mechanical sensors according to claim 1, characterized in that, Two guide frames (8) are installed on both sides of the carrier (10). The two ends of the guide frames (8) are bent downwards. A recess (40) is provided in the middle of the guide frame (8). The recess (40) has a V-shaped or U-shaped structure. The linkage component includes a collar (36). The collar (36) corresponds to the detection rod (33). A limit piece (32) is fixed on the detection rod (33). The collar (36) is sleeved on the outside of the detection rod (33) and is located below the limit piece (32). The collar (36) is connected by a connecting frame (34). An installation wheel (35) is movably installed at the end of the connecting frame (34). The installation wheel (35) is located on the movement path of the guide frame (8). When the packaging box (19) moves to the test position, the installation wheel (35) rolls to the recess (40). The initial height of the bottom end of the detection rod (33) is lower than the height of the top surface of the packaging box (19), and the initial height of the mounting wheel (35) is lower than the height of the top of the guide frame (8), but higher than the height of the end of the guide frame (8). When the mounting wheel (35) rolls on the top of the guide frame (8), the collar (36) pushes the limiting piece (32) upward to raise the height of the bottom end of the detection rod (33) to above the height of the top surface of the packaging box (19). When the mounting wheel (35) rolls in the recess (40), the height of the collar (36) drops, so that the bottom end of the detection rod (33) contacts the top surface of the packaging box (19).

4. The high-temperature resistance testing device for packaging boxes based on mechanical sensors according to claim 1, characterized in that, The carrier (10) is provided with a slide rail, and a mounting base (43) is slidably connected to the slide rail. A longitudinal adjusting screw (20) is rotatably installed on the carrier (10). The longitudinal adjusting screw (20) is threadedly connected to the inner wall of the mounting base (43). The clamping components are provided on both sides of the mounting base (43).

5. The high-temperature resistance testing device for packaging boxes based on mechanical sensors according to claim 4, characterized in that, The clamping assembly includes: The slider (49) and the carrier (10) are provided with a longitudinal groove (41), and the slider (49) is slidably connected in the longitudinal groove (41); Anti-slip pressure frame (56) slides on the inner wall of slider (49). Anti-slip pressure frame (56) and slider (49) are connected by anti-slip spring (57). Based on the force of anti-slip spring (57), anti-slip pressure frame (56) presses against the surface of carrier (10). The clamping frame (44) has one end that slides on the inner wall of the slider (49), and the other end of the clamping frame (44) has an L-shaped structure. A transverse adjusting screw (48) is threaded to the inner wall of the slider (49), and one end of the transverse adjusting screw (48) is rotatably mounted on the inner wall of the clamping frame (44).

6. The high-temperature resistance testing device for packaging boxes based on mechanical sensors according to claim 5, characterized in that, A side detection mechanism is installed on the slider (49). The side detection mechanism includes a sliding sleeve (47). A connecting post (38) is fixed on one slider (49). The connecting post (38) is slidably connected to the inner wall of another slider (49). The sliding sleeve (47) slides on the outer wall of the connecting post (38). A first fixing screw for fixing the sliding sleeve (47) to the connecting post (38) is threadedly connected to one side of the sliding sleeve (47). A stand (45) is installed on the top of the sliding sleeve (47). A lifting slide (51) is slidably connected to the outside of the stand (45). A threaded connection for fixing the lifting slide (51) to the stand (45) is attached to the inner wall of one side of the lifting slide (51). The second fixing screw; an installation tube (53) is installed on the lifting slide (51), and a heat transfer pressure rod (46) is slidably connected inside the installation tube (53). A heat transfer ball (39) is fixed at one end of the heat transfer pressure rod (46). The position of the heat transfer ball (39) is adapted to the heating module (16). The other end of the heat transfer pressure rod (46) passes through the installation tube (53). An installation block (55) is slidably installed on the outside of the heat transfer pressure rod (46). A fixing knob (37) for fixing the installation block (55) to the heat transfer pressure rod (46) is connected by a thread on one side of the inner wall of the installation block (55). The installation block (55) and the installation tube (53) are connected by a second clamping spring (54).

7. The high-temperature resistance testing device for packaging boxes based on mechanical sensors according to claim 6, characterized in that, A spherical body (52) is provided on the outside of the mounting tube (53), and a ball cavity is provided on the inside of the lifting slide (51). The mounting tube (53) is movably installed in the ball cavity through the spherical body (52).

8. The high-temperature resistance testing device for packaging boxes based on mechanical sensors according to claim 1, characterized in that, The test chamber (1) has a partition (5) that is slidably connected to the top inner wall. An electric telescopic cylinder (4) is installed on the top of the test chamber (1) via a bracket. The output end of the electric telescopic cylinder (4) is fixed to one side of the partition (5). When the partition (5) is inserted into the test chamber (1), it divides the test chamber (1) into a detection chamber and a cooling chamber. A cooling module (2) is installed on the top of the test chamber (1), and the bottom of the cooling module (2) is located in the cooling chamber.

9. A high-temperature resistance testing device for packaging boxes based on a mechanical sensor according to claim 3, characterized in that, Both ends of the test chamber (1) are equipped with blocking doors (14), and the sides of the blocking doors (14) are fixed with gantry frames (11). The test chamber (1) is equipped with a guide bracket (15). The gantry frame (11) slides up and down on the inner wall of the guide bracket (15). The gantry frame (11) and the guide bracket (15) are connected by a return spring. A linkage inclined frame (13) is fixed on one side of the outer wall of the blocking door (14). Multiple rollers (12) are installed on one side of the linkage inclined frame (13). The positions of the linkage inclined frame (13) and the rollers (12) are located on the movement path of the guide frame (8).

10. A high-temperature resistance testing device for packaging boxes based on a mechanical sensor according to claim 1, characterized in that, The chain conveyor mechanism (9) has equidistantly distributed assembly holes (7) on its chain plate, and the base (10) has a mounting post (42) at its bottom. The base (10) is detachably installed in the assembly hole (7) of the chain plate through the mounting post (42).

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