A device for detecting the high and low temperature aging and discoloration of hot melt adhesive

Abstract

The invention relates to the technical field of aging discoloration test, and provides a hot melt adhesive high and low temperature aging discoloration detection device, comprising a rotating mechanism, a hot melt adhesive delivery mechanism, a delivery drive component, a flip drive component and a ejection drive component. The tester assembly comprises a hot melt adhesive quantitative extrusion module, a low temperature zone, a normal temperature zone, a medium and high temperature zone, a high temperature zone, a test sample collection bin and a CCD camera module. The hot melt adhesive delivery mechanism comprises a movable shell, a hot melt adhesive containing component and an ejection component. On the one hand, four groups of hot melt adhesive delivery mechanisms can be respectively delivered into the low temperature zone, the normal temperature zone, the medium and high temperature zone and the high temperature zone to collect hot melt adhesive image data at regular intervals for aging test. On the other hand, the purpose of automatically removing the hot melt adhesive in the containing hole can be achieved by automatically flipping a silicone plate and squeezing an ejector column, so as to facilitate the high and low temperature aging test of the hot melt adhesive again. The device has the characteristics of high working efficiency and convenient operation.

Description

Technical Field

[0001] The invention relates to the technical field of aging discoloration testing, and in particular to a hot melt adhesive high and low temperature aging discoloration detection device. Background Art

[0002] The aging of hot melt adhesive is common in daily applications. Studies have shown that the aging rate or service life of hot melt adhesive is related to the operating temperature of the hot melt adhesive.

[0003] Patent No. CN206114512U discloses a hot melt adhesive aging test device, including: a base plate, a silicone plate and an outer frame. One side of the silicone plate is attached to the base plate, and a plurality of adhesive holes are provided on the silicone plate, and each adhesive hole is arranged at intervals, and a limit groove is also provided on the side edge of the silicone plate. The outer frame has a hollow structure, the outer frame is arranged on the base plate, and the inner side wall of the outer frame is attached to the side edge of the silicone plate, and a limit block is also provided on the inner side wall of the outer frame, and the limit block is embedded in the limit groove. The above-mentioned hot melt adhesive aging test device is provided with a base plate, a silicone plate and an outer frame, and a plurality of adhesive holes for accommodating hot melt adhesive are provided on the silicone plate. It is possible to simultaneously observe the aging and discoloration of the hot melt adhesive at various time points within a specific time point, and the observation effect of the test results is better.

[0004] The above technical solution also has the following defects: on the one hand, it is impossible to observe the aging and discoloration of the hot melt adhesive in different temperature ranges at the same time point; on the other hand, after a round of aging test is completed, the hot melt adhesive in the adhesive hole needs to be manually cleaned, and it is impossible to efficiently complete the aging test of multiple different types of hot melt adhesives. Summary of the invention

[0005] The purpose of the present invention is to provide a hot melt adhesive high and low temperature aging and discoloration detection device, aiming to solve the problems existing in the use of an existing hot melt adhesive high and low temperature aging and discoloration detection device.

[0006] To achieve the above object, the present invention provides the following technical solution: a hot melt adhesive high and low temperature aging discoloration detection device, comprising:

[0007] A tester assembly, the tester assembly comprising a hot melt adhesive quantitative extrusion module, a low temperature zone, a normal temperature zone, a medium and high temperature zone, a high temperature zone, a test sample collection bin and a CCD camera module, the low temperature zone, the normal temperature zone, the medium and high temperature zone and the high temperature zone are evenly distributed above the test sample collection bin, the low temperature zone, the normal temperature zone, the medium and high temperature zone and the high temperature zone are all fixedly connected to the hot melt adhesive quantitative extrusion module, and the low temperature zone, the normal temperature zone, the medium and high temperature zone and the high temperature zone are all installed with a CCD camera module;

[0008] A rotating mechanism, the rotating mechanism comprising an annular shell and a hollow guide rail, four of the annular shell and the hollow guide rail are evenly distributed on the surface of the annular shell, and the annular shell is connected to the test sample collection chamber;

[0009] A hot melt adhesive delivery inspection mechanism, the hot melt adhesive delivery inspection mechanism comprises a movable shell, a hot melt adhesive containing assembly and an ejection assembly, the movable shell is slidably connected in a hollow guide rail, the side wall of the movable shell is provided with a toothed rail, the hot melt adhesive containing assembly comprises a rigid shell, a silicone plate, a containing hole, a third transmission gear, a rotating shaft and a limiting frame, the silicone plate is embedded in the rigid shell, a plurality of containing holes are provided on the surface of the silicone plate, the rotating shaft and the limiting frame are both fixedly connected to the rigid shell, the movable shell is connected to the rotating shaft, and the third transmission gear is fixedly connected to the rotating shaft;

[0010] The ejection assembly comprises a base plate, an ejector column and a return spring, the surface of the base plate is fixedly connected with the ejector column, the ejector column is movably filled in the bottom of the receiving hole, the return spring is connected between the rigid housing and the base plate, and the limit frame is in sliding contact with the base plate;

[0011] The inspection drive assembly, the flip drive assembly and the ejection drive assembly are connected to the annular shell. The inspection drive assembly is connected to the toothed rail for controlling the four hot melt adhesive inspection mechanisms to enter and exit the low temperature zone, the normal temperature zone, the medium and high temperature zone and the high temperature zone. The flip drive assembly is connected to the third transmission gear for controlling the rotation degree of the hot melt adhesive containing assembly and the ejection assembly around the rotating shaft. The ejection drive assembly is used to extrude the substrate downward, and the extruded substrate ejects the hot melt adhesive in the containing hole through the ejector column.

[0012] As a further solution of the present invention, the rotating mechanism also includes a first driving part, a central tube, a first transmission gear and a central groove. The first driving part and the central tube are both connected to the test sample collection bin, the annular shell is fixedly connected to the central tube, the first transmission gear is fixedly connected to the central tube, the first driving part is transmission-connected to the first transmission gear, and a central groove is provided on the surface of the annular shell.

[0013] As a further solution of the present invention, the cross-sections of the low temperature zone, normal temperature zone, medium and high temperature zone and high temperature zone are all fan-shaped, and the side of the low temperature zone, normal temperature zone, medium and high temperature zone and high temperature zone close to the central tube are in sliding contact with the surface of the annular shell.

[0014] As a further solution of the present invention, the inspection drive assembly includes a second drive unit, a gear ring, a fourth transmission gear, a transmission rod and a fifth transmission gear. The second drive unit is fixedly connected to the annular shell, the fourth transmission gear and the fifth transmission gear are both fixedly connected to the transmission rod, the gear ring and the transmission rod are both connected to the annular shell, the inner and outer sides of the gear ring are respectively transmission-connected to the second drive unit and the fourth transmission gear, and the toothed rail is transmission-connected to the fifth transmission gear.

[0015] As a further solution of the present invention, the flipping drive assembly includes a third driving part, a transmission ring, a first meshing tooth and a second meshing tooth. The third driving part is fixedly connected to the inner wall of the center tube, the transmission ring is movably connected in the center groove, and the first meshing tooth and the second meshing tooth are respectively provided on the inner side and the upper surface of the transmission ring. The third driving part is transmission connected to the first meshing tooth, and the third transmission gear is transmission connected to the second meshing tooth.

[0016] As a further solution of the present invention, the ejection drive assembly includes an electric telescopic rod, a lifting ring and a pressure rod, the electric telescopic rod is fixedly connected between the central tube and the lifting ring, the pressure rod is fixedly connected to the lifting ring, and the base plate is in contact with the pressure rod.

[0017] As a further solution of the present invention, the tester assembly also includes a temperature control module and a temperature sensor, and the low temperature zone, normal temperature zone, medium and high temperature zone and high temperature zone are respectively installed with a temperature control module and a temperature sensor.

[0018] The beneficial effects of the present invention are as follows: the design of the combination of the rotating mechanism, the hot melt adhesive inspection mechanism, the inspection driving assembly, the flipping driving assembly and the ejecting driving assembly can, on the one hand, respectively send the four groups of hot melt adhesive inspection mechanisms into the low temperature zone, the normal temperature zone, the medium and high temperature zone and the high temperature zone to regularly collect hot melt adhesive image data for aging tests; on the other hand, it can achieve the purpose of automatically removing the hot melt adhesive from the accommodating hole by automatically flipping the silicone plate and squeezing the ejecting column, thereby facilitating the high and low temperature aging test of the hot melt adhesive again, and has the characteristics of high work efficiency and convenient operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is an exploded view of a hot melt adhesive high and low temperature aging and discoloration detection device according to an embodiment of the present invention.

[0020] Figure 2 It is a three-dimensional diagram of the tester assembly according to an embodiment of the present invention.

[0021] Figure 3 It is a planar cross-sectional view of a tester assembly according to an embodiment of the present invention.

[0022] Figure 4 It is a three-dimensional diagram of the rotating mechanism according to an embodiment of the present invention.

[0023] Figure 5 It is an exploded view of the hot melt adhesive inspection mechanism according to an embodiment of the present invention.

[0024] Figure 6 It is a cross-sectional view of the hot melt adhesive inspection mechanism according to an embodiment of the present invention.

[0025] Figure 7 It is an assembly diagram of the hot melt adhesive inspection delivery mechanism, the inspection delivery drive assembly, the flip drive assembly and the ejection drive assembly according to an embodiment of the present invention.

[0026] Figure 8 It is an assembly diagram of the rotating mechanism, the hot melt adhesive inspection delivery mechanism, the inspection delivery drive assembly, the flipping drive assembly and the ejecting drive assembly according to an embodiment of the present invention.

[0027] Fig. 9 For the present invention Figure 8 A partial enlarged view of point a in the middle.

[0028] Fig.10 This is a cross-sectional view of a hot melt adhesive quantitative extrusion module injecting adhesive into a hot melt adhesive inspection mechanism according to an embodiment of the present invention.

[0029] Fig.11 This is a cross-sectional view of the hot melt adhesive testing machine according to the present embodiment undergoing high and low temperature tests.

[0030] Fig.12 It is a stereoscopic diagram of a hot melt adhesive high and low temperature aging and discoloration detection device according to an embodiment of the present invention.

[0031] Fig.13 It is a cross-sectional view of a device for detecting high and low temperature aging and discoloration of hot melt adhesive according to an embodiment of the present invention.

[0032] Figure numerals: 1-testing instrument assembly, 11-hot melt adhesive quantitative extrusion module, 12-low temperature zone, 13-normal temperature zone, 14-medium and high temperature zone, 15-high temperature zone, 16-temperature control module, 17-CCD camera module, 18-temperature sensor, 19-test sample collection chamber, 2-rotation mechanism, 21-annular shell, 22-first drive part, 23-hollow guide rail, 24-center tube, 25-first transmission gear, 26-center groove, 3-hot melt adhesive inspection mechanism, 31-movable shell, 311-toothed rail, 312-center hole, 32-hot melt adhesive containing component, 321-rigid Shell, 322-silicone plate, 323-accommodating hole, 324-third transmission gear, 325-rotating shaft, 326-limiting frame, 33-ejection assembly, 331-base plate, 332-elevator column, 333-reset spring, 4-inspection drive assembly, 41-second drive unit, 42-tooth ring, 43-fourth transmission gear, 44-transmission rod, 45-fifth transmission gear, 5-flip drive assembly, 51-third drive unit, 52-transmission ring, 521-first meshing tooth, 522-second meshing tooth, 6-ejection drive assembly, 61-electric telescopic rod, 62-lifting ring, 63-pressure rod. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0034] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0035] See also Figures 1 to 13 In one embodiment of the present invention, a hot melt adhesive high and low temperature aging discoloration detection device includes:

[0036] A tester assembly 1, the tester assembly 1 includes a hot melt adhesive quantitative extrusion module 11, a low temperature zone 12, a normal temperature zone 13, a medium and high temperature zone 14, a high temperature zone 15, a test sample collection bin 19 and a CCD camera module 17, the low temperature zone 12, the normal temperature zone 13, the medium and high temperature zone 14 and the high temperature zone 15 are evenly distributed above the test sample collection bin 19, the low temperature zone 12, the normal temperature zone 13, the medium and high temperature zone 14 and the high temperature zone 15 are all fixedly connected to the hot melt adhesive quantitative extrusion module 11, the low temperature zone 12, the normal temperature zone 13, the medium and high temperature zone 14 and the high temperature zone 15 are all installed with a CCD camera module 17, the temperature range of the low temperature zone 12 is -10°C-10°C, the temperature range of the normal temperature zone 13 is 10°C-30°C, the temperature range of the medium and high temperature zone 14 is 30°C-50°C, and the temperature range of the high temperature zone 15 is 50°C-100°C;

[0037] The rotating mechanism 2 includes an annular shell 21 and a hollow guide rail 23. Four of the annular shell 21 and the hollow guide rail 23 are evenly distributed on the surface of the annular shell 21. The annular shell 21 is connected to the test sample collection chamber 19.

[0038] A hot melt adhesive inspection mechanism 3, the hot melt adhesive inspection mechanism 3 comprises a movable shell 31, a hot melt adhesive containing assembly 32 and an ejection assembly 33, the movable shell 31 is slidably connected in the hollow guide rail 23, the side wall of the movable shell 31 is provided with a toothed rail 311, the hot melt adhesive containing assembly 32 comprises a rigid shell 321, a silicone plate 322, a containing hole 323, a third transmission gear 324, a rotating shaft 325 and a limiting frame 326, the silicone plate 322 is embedded in the rigid shell 321, a plurality of containing holes 323 are provided on the surface of the silicone plate 322, the rotating shaft 325 and the limiting frame 326 are both fixedly connected to the rigid shell 321, the movable shell 31 is connected to the rotating shaft 325, the third transmission gear 324 is fixedly connected to the rotating shaft 325, a center hole 312 is provided on the surface of the movable shell 31, and the rotating shaft 325 is installed in the center hole 312;

[0039] The ejection assembly 33 includes a base plate 331, a top column 332 and a return spring 333. The top column 332 is fixedly connected to the surface of the base plate 331. The top column 332 is movably filled in the bottom of the receiving hole 323. The return spring 333 is connected between the rigid shell 321 and the base plate 331. The limit frame 326 is in sliding contact with the base plate 331.

[0040] The inspection drive assembly 4, the flip drive assembly 5 and the ejection drive assembly 6 are connected to the annular shell 21. The inspection drive assembly 4 is connected to the toothed rail 311 for controlling the four hot melt adhesive inspection mechanisms 3 to enter and exit the low temperature zone 12, the normal temperature zone 13, the medium and high temperature zone 14 and the high temperature zone 15. The flip drive assembly 5 is connected to the third transmission gear 324 for controlling the hot melt adhesive containing assembly 32 and the ejection assembly 33 to rotate 180 degrees around the rotating shaft 325. The ejection drive assembly 6 is used to extrude the substrate 331 downward, and the extruded substrate 331 ejects the hot melt adhesive in the containing hole 323 through the ejector column 332.

[0041] See also Figure 3 , Fig.10 and Fig.11 Furthermore, the cross-sections of the low temperature zone 12, the normal temperature zone 13, the medium and high temperature zone 14 and the high temperature zone 15 are all fan-shaped, and the side of the low temperature zone 12, the normal temperature zone 13, the medium and high temperature zone 14 and the high temperature zone 15 close to the central tube 24 are all in sliding contact with the surface of the annular shell 21.

[0042] See also Figure 3 , Fig.10 and Fig.11 The tester assembly 1 also includes a temperature control module 16 and a temperature sensor 18. The low temperature zone 12, the normal temperature zone 13, the medium and high temperature zone 14 and the high temperature zone 15 are respectively installed with the temperature control module 16 and the temperature sensor 18.

[0043] In an embodiment of the present invention, the hot melt adhesive quantitative extrusion module 11 includes an injection head with a longitudinal telescopic function. When the silicone plate 322 moves to the bottom of the hot melt adhesive quantitative extrusion module 11, the hot melt adhesive quantitative extrusion module 11 injects equal amounts of hot melt adhesive into the four receiving holes 323 on the surface of the silicone plate 322 in sequence by lowering the injection head.

[0044] See also Figure 4 and Fig.13 In one embodiment of the present invention, the rotating mechanism 2 further includes a first driving part 22, a central tube 24, a first transmission gear 25 and a central groove 26. The first driving part 22 and the central tube 24 are both connected to the test sample collection chamber 19. The annular shell 21 is fixedly connected to the central tube 24. The first transmission gear 25 is fixedly connected to the central tube 24. The first driving part 22 is transmission-connected to the first transmission gear 25. A central groove 26 is provided on the surface of the annular shell 21.

[0045] In an embodiment of the present invention, the first driving unit 22 controls the annular shell 21, the hot melt adhesive inspection mechanism 3, the inspection drive assembly 4, the flipping drive assembly 5 and the top material drive assembly 6 to rotate around the central tube 24 through the first transmission gear 25. On the one hand, it can automatically move the silicone plate 322 to the bottom of the hot melt adhesive quantitative extrusion module 11, and on the other hand, it can align the four groups of hot melt adhesive inspection mechanisms 3 with the low temperature zone 12, the normal temperature zone 13, the medium and high temperature zone 14 and the high temperature zone 15 respectively.

[0046] See also Figures 7 to 9 In one embodiment of the present invention, the inspection drive assembly 4 includes a second drive unit 41, a gear ring 42, a fourth transmission gear 43, a transmission rod 44 and a fifth transmission gear 45. The second drive unit 41 is fixedly connected to the annular housing 21, the fourth transmission gear 43 and the fifth transmission gear 45 are both fixedly connected to the transmission rod 44, the gear ring 42 and the transmission rod 44 are both connected to the annular housing 21, the inner and outer sides of the gear ring 42 are respectively transmission-connected to the second drive unit 41 and the fourth transmission gear 43, and the toothed rail 311 is transmission-connected to the fifth transmission gear 45.

[0047] In an embodiment of the present invention, the third driving unit 51 drives the fourth transmission gear 43, the transmission rod 44 and the fifth transmission gear 45 to rotate through the transmission ring 52. The rotating fifth transmission gear 45 controls the four groups of hot melt adhesive inspection mechanisms 3 to enter the low temperature zone 12, the normal temperature zone 13, the medium and high temperature zone 14 and the high temperature zone 15 respectively through the toothed rail 311 on the surface of the movable shell 31.

[0048] See also Figures 7 to 9 In one embodiment of the present invention, the flip drive assembly 5 includes a third drive part 51, a transmission ring 52, a first meshing tooth 521 and a second meshing tooth 522. The third drive part 51 is fixedly connected to the inner wall of the center tube 24, and the transmission ring 52 is movably connected in the center groove 26. The inner side and the upper surface of the transmission ring 52 are respectively provided with the first meshing tooth 521 and the second meshing tooth 522. The third drive part 51 is transmission connected to the first meshing tooth 521, and the third transmission gear 324 is transmission connected to the second meshing tooth 522.

[0049] In an embodiment of the present invention, the third driving unit 51 controls the rotation of the transmission ring 52 through the first meshing teeth 521. The rotating transmission ring 52 controls the hot melt adhesive containing assembly 32 and the ejection assembly 33 to rotate 180 degrees around the rotating shaft 325 through the second meshing teeth 522 and the third transmission gear 324, so that the containing hole 323 faces downward.

[0050] See also Figures 7 to 9In one embodiment of the present invention, the top material driving assembly 6 includes an electric telescopic rod 61, a lifting ring 62 and a pressure rod 63, the electric telescopic rod 61 is fixedly connected between the central tube 24 and the lifting ring 62, the pressure rod 63 is fixedly connected to the lifting ring 62, and the base plate 331 is in contact with the pressure rod 63.

[0051] In the embodiment of the present invention, the electric telescopic rod 62 drives the pressure rod 63 to descend through the lifting ring 62. Since the top column 332 and the receiving hole 32 made of silicone material have the characteristics of high temperature resistance, anti-adhesion and aging resistance, when the descending pressure rod 63 squeezes the substrate 331, the top column 332 that moves while rubbing inside the receiving hole 323 can completely remove the hot melt adhesive so as to carry out the next aging test.

[0052] Working principle: First, the first driving part 22 controls the annular housing 21, the hot melt adhesive inspection mechanism 3, the inspection driving assembly 4, the flip driving assembly 5 and the ejecting driving assembly 6 to rotate around the central tube 24 through the first transmission gear 25. When the silicone plate 322 moves below the hot melt adhesive quantitative extrusion module 11, the hot melt adhesive quantitative extrusion module 11 sequentially injects an equal amount of hot melt adhesive into the four receiving holes 323 on the surface of the silicone plate 322. Since the ejector 332 is located at the bottom of the receiving hole 323, the ejector 332 plays a role in sealing the receiving hole 323.

[0053] Then, the first driving part 22 controls the annular shell 21 to rotate again, so that the four groups of hot melt adhesive inspection mechanisms 3 are aligned with the low temperature zone 12, the normal temperature zone 13, the medium and high temperature zone 14 and the high temperature zone 15 respectively. The third driving part 51 drives the fourth transmission gear 43, the transmission rod 44 and the fifth transmission gear 45 to rotate through the transmission ring 52. The rotating fifth transmission gear 45 controls the four groups of hot melt adhesive inspection mechanisms 3 to enter the low temperature zone 12, the normal temperature zone 13, the medium and high temperature zone 14 and the high temperature zone 15 respectively through the toothed track 311 on the surface of the moving shell 31. The temperature control module 16 and the temperature sensor 18 cooperate with each other to adjust the internal temperature of the low temperature zone 12, the normal temperature zone 13, the medium and high temperature zone 14 and the high temperature zone 15. The CCD camera module 17 collects the hot melt adhesive image data in the receiving hole 323 at regular intervals, and transmits the hot melt adhesive image data to the computer system. The computer system achieves the purpose of judging the aging degree or parameters of the hot melt adhesive by matching the hot melt adhesive image number with the hot melt adhesive sample data.

[0054] Next, when the hot melt adhesive aging test is completed, the third driving unit 51 controls the four groups of hot melt adhesive inspection mechanisms 3 to move out of the low temperature zone 12, the normal temperature zone 13, the medium and high temperature zone 14 and the high temperature zone 15, so that the third transmission gear 324 is engaged with the second meshing tooth 522 on the surface of the transmission ring 52, and the third driving unit 51 controls the transmission ring 52 to rotate through the first meshing tooth 521. The rotating transmission ring 52 controls the hot melt adhesive containing component 32 and the ejection component 33 to rotate 180 degrees around the rotating shaft 325 through the second meshing tooth 522 and the third transmission gear 324. The electric telescopic rod 62 drives the pressure rod 63 to descend through the lifting ring 62. Since the top column 332 and the receiving hole 32 made of silicone material are resistant to high temperature, anti-adhesion and aging, the descending pressure rod 63 achieves the purpose of controlling the top column 332 to move the hot melt adhesive out of the receiving hole 323 by squeezing the substrate 331, and the removed hot melt adhesive enters the test sample collection bin 19 through the hollow guide rail 23.

[0055] Finally, the electric telescopic rod 62 drives the pressure rod 63 to rise through the lifting ring 62, and the elastic force of the reset spring 333 drives the base plate 331 to contact the limit frame 326, thereby resetting the top column 332, and this cycle is repeated. On the one hand, it realizes the function of automatically performing aging tests through the color changes of the hot melt adhesive under low temperature, normal temperature, medium and high temperature and high temperature environments at the same time, and on the other hand, it realizes the function of automatically cleaning the hot melt adhesive inside the accommodating hole 323 after the aging test is completed, which has the characteristics of high work efficiency and convenient operation.

[0056] To sum up, the design of the combination of the rotating mechanism 2, the hot melt adhesive inspection mechanism 3, the inspection drive assembly 4, the flipping drive assembly 5 and the ejecting drive assembly 6 can, on the one hand, respectively send the four groups of hot melt adhesive inspection mechanisms 3 into the low temperature zone 12, the normal temperature zone 13, the medium and high temperature zone 14 and the high temperature zone 15 to regularly collect hot melt adhesive image data for aging tests; on the other hand, it can automatically remove the hot melt adhesive from the accommodating hole 323 by automatically flipping the silicone plate 322 and squeezing the ejector column 332, thereby facilitating the high and low temperature aging test of the hot melt adhesive again, and has the characteristics of high work efficiency and convenient operation.

[0057] For those skilled in the art, although several embodiments and examples of the present invention are described, these embodiments and examples are presented as examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in various other ways, and various omissions, substitutions, and changes can be made without departing from the scope of the subject matter of the invention. These embodiments and their variations are included in the scope and subject matter of the invention, and are included in the invention described in the claims and the scope of their equivalents.

[0058] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A hot melt adhesive high and low temperature aging discoloration detection device, characterized in that: include: A tester assembly (1), the tester assembly (1) comprising a hot melt adhesive quantitative extrusion module (11), a low temperature zone (12), a normal temperature zone (13), a medium and high temperature zone (14), a high temperature zone (15), a test sample collection bin (19) and a CCD camera module (17), the low temperature zone (12), the normal temperature zone (13), the medium and high temperature zone (14) and the high temperature zone (15) are uniformly distributed above the test sample collection bin (19), the low temperature zone (12), the normal temperature zone (13), the medium and high temperature zone (14) and the high temperature zone (15) are all fixedly connected to the hot melt adhesive quantitative extrusion module (11), and the low temperature zone (12), the normal temperature zone (13), the medium and high temperature zone (14) and the high temperature zone (15) are all equipped with a CCD camera module (17); A rotating mechanism (2), the rotating mechanism (2) comprising an annular shell (21) and a hollow guide rail (23), four of the annular shell (21) and the hollow guide rail (23) being evenly distributed on the surface of the annular shell (21), and the annular shell (21) being connected to a test sample collection chamber (19); A hot melt adhesive delivery inspection mechanism (3), the hot melt adhesive delivery inspection mechanism (3) comprising a movable housing (31), a hot melt adhesive containing assembly (32) and an ejection assembly (33), the movable housing (31) being slidably connected in a hollow guide rail (23), a toothed rail (311) being provided on a side wall of the movable housing (31), the hot melt adhesive containing assembly (32) comprising a rigid housing (321), a silicone plate (322), a containing hole (323), a third transmission gear ( 324), a rotating shaft (325) and a limiting frame (326), the silicone plate (322) is embedded in the rigid shell (321), a surface of the silicone plate (322) is provided with a plurality of accommodating holes (323), the rotating shaft (325) and the limiting frame (326) are both fixedly connected to the rigid shell (321), the movable shell (31) is connected to the rotating shaft (325), and the third transmission gear (324) is fixedly connected to the rotating shaft (325); The ejection assembly (33) comprises a base plate (331), a top column (332) and a return spring (333); the top column (332) is fixedly connected to the surface of the base plate (331); the top column (332) is movably filled in the bottom of the receiving hole (323); the return spring (333) is connected between the rigid housing (321) and the base plate (331); and the limit frame (326) is in sliding contact with the base plate (331); A delivery drive assembly (4), a flip drive assembly (5) and a material ejection drive assembly (6) connected to the annular housing (21); the delivery drive assembly (4) is in driving connection with the toothed rail (311) and is used to control the four hot melt adhesive delivery mechanisms (3) to enter and exit the low temperature zone (12), the normal temperature zone (13), the medium and high temperature zone (14) and the high temperature zone (15); the flip drive assembly (5) is in driving connection with the third transmission gear (324) and is used to control the hot melt adhesive receiving assembly (32) and the ejection assembly (33) to rotate (180) degrees around the rotating shaft (325); the ejection drive assembly (6) is used to extrude the substrate (331) downwards, and the extruded substrate (331) ejects the hot melt adhesive in the receiving hole (323) through the ejector column (332); The inspection drive assembly (4) comprises a second drive unit (41), a gear ring (42), a fourth transmission gear (43), a transmission rod (44) and a fifth transmission gear (45); the second drive unit (41) is fixedly connected to the annular housing (21); the fourth transmission gear (43) and the fifth transmission gear (45) are both fixedly connected to the transmission rod (44); the gear ring (42) and the transmission rod (44) are both connected to the annular housing (21); the inner and outer sides of the gear ring (42) are respectively transmission-connected to the second drive unit (41) and the fourth transmission gear (43); the toothed rail (311) is transmission-connected to the fifth transmission gear (45); The flip driving assembly (5) comprises a third driving part (51), a transmission ring (52), a first meshing tooth (521) and a second meshing tooth (522); the third driving part (51) is fixedly connected to the inner wall of the central tube (24); the transmission ring (52) is movably connected in the central groove (26); the inner side and the upper surface of the transmission ring (52) are respectively provided with the first meshing tooth (521) and the second meshing tooth (522); the third driving part (51) is transmission-connected to the first meshing tooth (521); and the third transmission gear (324) is transmission-connected to the second meshing tooth (522); The ejection drive assembly (6) comprises an electric telescopic rod (61), a lifting ring (62) and a pressure rod (63); the electric telescopic rod (61) is fixedly connected between the central tube (24) and the lifting ring (62); the pressure rod (63) is fixedly connected to the lifting ring (62); and the base plate (331) is in contact with the pressure rod (63).

2. A hot melt adhesive high and low temperature aging discoloration detection device according to claim 1, characterized in that: The rotating mechanism (2) further comprises a first driving part (22), a central tube (24), a first transmission gear (25) and a central groove (26); the first driving part (22) and the central tube (24) are both connected to the test sample collection chamber (19); the annular housing (21) is fixedly connected to the central tube (24); the first transmission gear (25) is fixedly connected to the central tube (24); the first driving part (22) is transmission-connected to the first transmission gear (25); and a central groove (26) is provided on the surface of the annular housing (21).

3. A hot melt adhesive high and low temperature aging discoloration detection device according to claim 2, characterized in that: The cross-sections of the low temperature zone (12), the normal temperature zone (13), the medium and high temperature zone (14) and the high temperature zone (15) are all fan-shaped, and the sides of the low temperature zone (12), the normal temperature zone (13), the medium and high temperature zone (14) and the high temperature zone (15) close to the central tube (24) are in sliding contact with the surface of the annular shell (21).

4. A hot melt adhesive high and low temperature aging discoloration detection device according to claim 1, characterized in that: The tester assembly (1) further comprises a temperature control module (16) and a temperature sensor (18), and the temperature control module (16) and the temperature sensor (18) are respectively installed inside the low temperature zone (12), the normal temperature zone (13), the medium and high temperature zone (14) and the high temperature zone (15).

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