Silicone rubber curing rate detection device with automatic sample preparation function

Abstract

The invention provides a silicone rubber curing rate detection device with an automatic sample preparation function, and belongs to the technical field of detection devices.The silicone rubber curing rate detection device comprises a base, and a preparation area and a detection area are arranged on the base; a feeding unit and a stirring unit are arranged in the preparation area, the feeding unit comprises a plurality of groups of accommodating tanks and pumping parts, and the stirring unit comprises a stirring tank and a stirring part; the stirring piece comprises a stirring shaft, and the stirring shaft is sleeved with turbulent flow blades; a mounting table and a transfer table are further arranged in the preparation area, a transfer plate and a plurality of groups of liquid carrying tables detachably connected with the transfer plate are arranged on the transfer table, a scraping plate for scraping slurry is arranged on the transfer plate, a pipettor is arranged below the transfer table, and a transfer mechanism for transferring the liquid carrying tables and the pipettor is arranged on the transfer table; a curing table and an infrared spectrometer are arranged in the detection area, a control module is arranged on the base, and the infrared spectrometer and the heating film are electrically connected with the control module. According to the device, by arranging the turbulent flow blades, silicone rubber with different viscosities can be stirred.

Description

Technical Field

[0001] The present invention belongs to the technical field of detection devices, and more specifically, relates to a silicone rubber curing rate detection device with an automatic sample preparation function. Background Art

[0002] Given the widespread use of silicone rubber in numerous fields, including electronics, automotive, and aerospace, testing its cure rate is crucial. This cure rate directly determines the material's physical properties and chemical stability, which in turn impacts the quality and reliability of related products. For example, in electronic packaging, an unsatisfactory cure rate can compromise the protective properties of electronic components and shorten the product's lifespan.

[0003] However, the stirring components of traditional detection devices are difficult to take into account the stirring requirements of high-viscosity silicone rubber. Conventional stirring blades have a fixed structure, and when faced with high-viscosity silicone rubber, they cannot fully penetrate into the interior of the material, resulting in uneven stirring and insufficient mixing of the components, which ultimately seriously affects the accuracy of subsequent curing rate detection. At the same time, in the sample leveling process, the traditional scraper has a single function and can only complete the leveling action. The residual slurry on the scraper after leveling is inconvenient to clean, which will not only contaminate subsequent samples, but also affect the next leveling effect due to the residual slurry, resulting in uneven sample thickness, further interfering with the accuracy of the curing rate detection, making it difficult for the test results to truly reflect the actual curing rate of silicone rubber, bringing troubles to product quality control and process optimization. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides a silicone rubber curing rate detection device with an automatic sample preparation function to solve the technical problems in the prior art that traditional devices have uneven stirring and scraping residues that affect detection.

[0005] The purpose and efficacy of the silicone rubber curing rate detection device with automatic sample preparation function of the present invention are achieved by the following specific technical means:

[0006] A silicone rubber curing rate detection device with an automatic sample preparation function comprises a base, wherein the base is provided with a preparation area and a detection area;

[0007] The preparation area is provided with a feeding unit and a stirring unit, the feeding unit includes multiple groups of holding tanks and pump feeding parts, and the stirring unit includes a stirring tank and a stirring part;

[0008] The pumping component includes a control valve and a metering pump, and the holding tank is connected to the tank cover of the mixing tank through a pipeline connecting the control valve and the metering pump in series;

[0009] The stirring member includes a stirring shaft, on which are sleeved turbulent blades for breaking bubbles of high-viscosity silicone rubber, preventing the tank wall from sticking, and stirring with variable dosage adaptability;

[0010] The preparation area is also provided with a mounting table and a transfer table, the transfer table is provided with a transfer plate and a plurality of groups of liquid carrying tables connected with the transfer plate through dismounting, the transfer plate is provided with a scraping plate for scraping slurry, the transfer table is provided below with a pipettor, and the transfer table is provided with a transfer mechanism for transferring the liquid carrying tables and the pipettor;

[0011] The detection area is provided with a curing table and an infrared spectrometer, the curing table is provided with three groups of blocking strips to form four independent detection areas, the bottom of each independent detection area is provided with a heating film, one side of the curing table is hingedly connected with a cover plate, and the cover plate is provided with a pressing piece corresponding to each independent detection area;

[0012] The base is provided with a control module, and the infrared spectrometer and the heating film are electrically connected with the control module.

[0013] According to a preferred embodiment, the base is provided with a first support, and the containing tank is mounted on the first support through a clamp;

[0014] The base is also provided with a second support, the second support is provided with a first telescopic cylinder and a vacuum pump for eliminating bubbles of slurry, the movable rod of the first telescopic cylinder is connected with the tank cover of the stirring tank, and the vacuum pump is connected with the tank cover pipeline of the stirring tank;

[0015] The first telescopic cylinder and the vacuum pump are electrically connected with the control module.

[0016] According to a preferred embodiment, the stirring part further comprises a stirring motor, the stirring motor is mounted on the tank cover of the stirring tank, and the stirring shaft is connected with the output shaft of the stirring motor;

[0017] The spoiler blade comprises four groups of main blade groups and a plurality of groups of auxiliary blades which are uniformly distributed along the radial direction, each main blade group comprises two arc-shaped blades which form an included angle, a plurality of spoiler holes are formed in the arc-shaped blades, a plurality of groups of auxiliary blades are located below the main blade group, the auxiliary blades are connected with the stirring shaft through torsion springs, in a normal state, the auxiliary blades are folded at an angle of 45° with the arc-shaped blades, and after being unfolded, a double-layer stirring structure is formed, and the end of the arc-shaped blade is provided with a silica gel scraping piece;

[0018] The stirring motor is electrically connected with the control module.

[0019] According to a preferred embodiment, the mounting table is provided with a first transmission mechanism, the transfer plate is mounted on the sliding block of the first transmission mechanism, and the first transmission mechanism is electrically connected with the control module;

[0020] The transport plate is provided with a plurality of clamping grooves on the solidification table, the liquid plate is provided with buckles on both sides, the buckles are clamped in the clamping grooves, and conductive contacts are arranged on the fitting surfaces of the buckles or the clamping grooves and used for transmitting electrical signals when the buckles are clamped with the clamping grooves.

[0021] The liquid plate is provided with a weight sensor and a temperature sensor, and the weight sensor and the temperature sensor are electrically connected with the control module.

[0022] According to a preferred embodiment, the transport assembly comprises two groups of second transmission mechanisms, the pipette is connected with one group of the second transmission mechanisms through a transmission member, the transmission member comprises a mounting plate and a second telescopic cylinder, the second telescopic cylinder is mounted on the sliding block of one group of the second transmission mechanisms, and the pipette is mounted on the movable rod of the second telescopic cylinder through the mounting plate.

[0023] The second transmission mechanisms and the second telescopic cylinders are electrically connected with the control module.

[0024] According to a preferred embodiment, the sliding block of the other group of the second transmission mechanisms is provided with a third transmission mechanism, the sliding block of the third transmission mechanism is provided with a third telescopic cylinder, and the movable rod of the third telescopic cylinder is provided with a pneumatic clamp jaw for clamping the liquid plate.

[0025] The third transmission mechanism, the third telescopic cylinder and the pneumatic clamp jaw are electrically connected with the control module.

[0026] The base is further provided with two groups of weighing tables for placing and weighing the stirring tanks, a rotating cylinder for transporting the stirring tanks is arranged between the two groups of weighing tables, and the stirring tanks are connected with the rotating cylinder.

[0027] According to a preferred embodiment, the base is provided with a third support, the top of the third support is provided with a first electric push rod, the movable rod of the first electric push rod is provided with a scraper for scraping the slurry on the liquid plate, the ends of the scraper are connecting plates, the third support is provided with two groups of damping rods, and the connecting plates are connected with the damping rods.

[0028] The scraper structure comprises a main plate, a scraping plate and a cleaning plate, the scraping plate and the cleaning plate are connected at an angle of 90 degrees and connected with the main plate through a rotating shaft, one side of the main plate is provided with a driving motor, and the output shaft of the driving motor is connected with the rotating shaft.

[0029] According to a preferred embodiment, the scraping plate is a long strip-shaped plate body, the bottom edge of which is a wedge-shaped blade, and a ceramic sheet is mounted on the blade, the cleaning plate is a long strip-shaped plate body, the bottom of which is provided with a brush, the bottom of the brush is provided with a flexible steel sheet, and the scraping plate is provided with a stop block on the side close to the cleaning plate.

[0030] According to a preferred embodiment, a second electric push rod is arranged on the curing table, and the movable rod of the second electric push rod is connected with the cover plate.

[0031] The pressing member comprises four sets of pressing plates and four sets of third electric push rods, the third electric push rods are mounted on the top of the cover plate, the pressing plates correspond to the independent detection areas, and the movable rods of the third electric push rods are connected with the pressing plates through the cover plate.

[0032] The second electric push rod and the third electric push rod are electrically connected with the control module.

[0033] According to a preferred embodiment, a plurality of flow guide grooves and a plurality of liquid collecting cavities are arranged on the top of the stop bar, the flow guide grooves are communicated with the liquid collecting cavities, and a liquid suction strip is arranged in the liquid collecting cavities.

[0034] Compared with the prior art, the present application has the following beneficial effects:

[0035] 1. The device can stir high-viscosity silicone rubber with different viscosities by arranging foldable and unfoldable spoiler blades on the stirring shaft, thereby improving the stirring adaptability of the device. The device can break bubbles through the spoiler holes on the main blade group, and the secondary blades are unfolded to form a double-layer stirring structure to penetrate into the material inside when the viscosity is high, thereby realizing uniform stirring, fully mixing the components of the silicone rubber, improving the ability of the device to ensure uniform stirring, and providing a good sample basis for detecting the curing rate.

[0036] 2. When using the device, the device can realize one-key switching of the scraping and cleaning functions by arranging the scraping plate and the cleaning plate to be connected at 90 degrees and switchable through the driving motor in the scraper structure, so that the device is more accurate in the sample scraping link, and the reliability of the device in the sample preparation link is improved. Then, the buckle on the liquid carrying plate cooperates with the signal transmission of the conductive contact, and the weight sensor and the temperature sensor are monitored, so that the device can locate the position of the liquid carrying plate and grasp the state of the sample, avoid affecting the detection due to the deviation of the position of the liquid carrying plate or the unknown state of the sample, and improve the ability of the device in the sample preparation precision control aspect.

[0037] 3、The present application sets up the temperature-resistant silica gel sponge liquid suction strip in the liquid collecting cavity through setting up the liquid collecting cavity and the liquid guiding groove on the top of the baffle, so that the device can cope with the overflow problem that may occur during pressurized curing, and improve the anti-overflow and cleaning ability of the device during the curing detection process. The device can guide the overflow slurry to the liquid collecting cavity through the liquid guiding groove, and then be absorbed by the liquid suction strip, so as to avoid the overflow pollution of the device and the influence on the detection result, make the device more stable and reliable in the curing detection link, and improve the ability of the device in maintaining the clean detection environment and ensuring the detection accuracy. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 is the structure schematic diagram of the assembled structure of the present application;

[0039] Figure 2 is the structure schematic diagram of the stirring piece of the present application;

[0040] Figure 3 is the structure schematic diagram of the spoiler blade of the present application;

[0041] Figure 4 is the structure schematic diagram of the transfer table of the present application;

[0042] Figure 5 is the structure schematic diagram of the transfer plate of the present application;

[0043] Figure 6 is Figure 5 is the enlarged view of the a area in the figure;

[0044] Figure 7 is the structure schematic diagram of the curing table of the present application;

[0045] Figure 8 is the structure schematic diagram of the heating film of the present application;

[0046] Figure 9 is the structure schematic diagram of the third support of the present application;

[0047] Figure 10 is the structure schematic diagram of the second transmission mechanism of the present application;

[0048] Figure 11 is the structure schematic diagram of the scraper of the present application;

[0049] Figure 12 is the principle framework diagram of the present application.

[0050] In the figure, the corresponding relationship between the component name and the figure number is:

[0051] 11. Base; 12. Holding tank; 13. Control valve; 14. Metering pump; 15. Mixing tank; 16. Mixing shaft; 17. Curved blade; 18. Turbine hole; 19. Auxiliary blade; 21. Torsion spring; 22. Silicone scraper; 23. Mixing motor; 24. Mounting table; 25. Transfer table; 26. Transfer plate; 27. Liquid carrier; 28. Buckle; 29. ​​Main board; 31. Pipette; 32. Curing table; 33. Infrared spectrometer; 34. Baffle; 35. Heating film; 36. Cover plate; 37. Press plate; 38. Third electric push rod; 39. Control module; 41. First bracket; 42. Second bracket; 43. First telescopic cylinder; 44. Vacuum pump; 45. First transmission mechanism; 46. Conductive contact; 47. Weight sensor; 48. Temperature sensor; 49. Second transmission mechanism; 51. Mounting plate; 52. Second telescopic cylinder; 53. Third transmission mechanism; 54. Third telescopic cylinder; 55. Pneumatic gripper; 58. Weighing platform; 59. Rotating cylinder; 61. Third bracket; 62. First electric push rod; 63. Connecting plate; 64. Damping rod; 65. Scraping plate; 66. Cleaning plate; 67. Driving motor; 68. Ceramic sheet; 69. Brush; 71. Elastic steel sheet; 72. Stop block; 73. Second electric push rod; 74. Guide trough; 75. Liquid collecting chamber; 76. Liquid absorption strip. DETAILED DESCRIPTION

[0052] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the technical solutions of the present invention, but are not intended to limit the scope of protection of the present invention.

[0053] Example 1:

[0054] like Figures 1 to 12 As shown, the present invention provides a silicone rubber curing rate detection device with an automatic sample preparation function, comprising a base 11 , on which a preparation area and a detection area are provided.

[0055] Specifically, the preparation area includes feeding, mixing, and transfer and leveling units, which automatically complete raw material proportioning, mixing, and slurry leveling. The testing area is a closed cabin containing a curing table 32, a pressurizing component, and a testing unit, which can simulate different curing conditions and test the curing rate. The two areas are connected by an automatic transfer.

[0056] A feeding unit and a stirring unit are provided in the preparation area. The feeding unit includes a plurality of holding tanks 12 and pump feeding parts, and the stirring unit includes a stirring tank 15 and a stirring part.

[0057] The pumping component includes a control valve 13 and a metering pump 14 . The holding tank 12 is connected to the tank cover of the mixing tank 15 through a pipeline connecting the control valve 13 and the metering pump 14 in series.

[0058] The stirring member comprises a stirring shaft 16 , on which are sleeved turbulent blades for breaking bubbles of high-viscosity silicone rubber, preventing the tank wall from sticking, and stirring the variable dosage adaptively.

[0059] Specifically, the feeding unit comprises at least three holding tanks 12, which are fed via electromagnetic control valves 13 and metering pumps 14, with preset mixing ratios. The mixing unit's mixing tank 15 features a non-stick inner wall, and the agitator shaft 16 incorporates primary and secondary blades. The secondary blades 19 automatically deploy with the speed, creating a double-layer agitation system. The primary blades have silicone scrapers 22 to prevent sticking to the wall, and these two components work in concert to accommodate silicone rubbers of varying viscosities. The control valve 18 can be a Spirax Sarco 85 series control valve, and the metering pump 14 can be a JLM series electromagnetically driven diaphragm metering pump.

[0060] The preparation area is also provided with an installation table 24 and a transfer table 25. The transfer table 25 is provided with a transfer plate 26 and multiple groups of liquid carriers 27 connected to the transfer plate 26 by disassembly. The transfer plate 26 is provided with a scraper for leveling the slurry. A pipette 31 is provided under the transfer table 25, and a transfer mechanism for transferring the liquid carrier 27 and the pipette 31 is provided on the transfer table 25.

[0061] Specifically, the mounting platform 24 supports the transfer platform 25, which can be moved and adjusted. The liquid carrier 27 on the transfer plate 26 is removable for easy replacement and cleaning. The scraper smoothes the slurry to ensure uniform thickness, and the pipette 31 removes the slurry. The transfer mechanism automatically moves the liquid carrier 27 and pipette 31. This automates the slurry processing from removal, leveling, and transfer, accommodating simultaneous operation of multiple sample groups. This reduces manual intervention, improves operational efficiency, and ensures slurry processing accuracy. The removable design facilitates cleaning and maintenance, adapting to the needs of samples of varying sizes.

[0062] A curing table 32 and an infrared spectrometer 33 are provided in the detection area. Three groups of baffles 34 are provided on the curing table 32 to form four independent detection areas. A heating film 35 is provided at the bottom of the independent detection area. A hinged cover 36 is provided on one side of the curing table 32, and a pressure piece corresponding to the independent detection area is provided on the cover 36.

[0063] A control module 39 is provided on the base 11 , and the infrared spectrometer 33 and the heating film 35 are both electrically connected to the control module 39 .

[0064] Specifically, the curing station 32 in the detection area forms four independent detection areas through the baffle 34. The heating film 35 and the pressure member can control the curing temperature and pressure. The infrared spectrometer 33 monitors the curing rate in real time, and the control module 39 links the various components. It provides a controllable curing environment for silicone rubber and completes the curing and testing of multiple groups of samples simultaneously. The four groups in parallel improve the detection efficiency; reduce errors; replace the delayed detection with real-time spectral analysis, and the data is more reliable; independent partitions prevent pollution and are suitable for multi-sample comparison experiments. The infrared spectrometer 33 can adopt the Bruker ALPHA II model infrared spectrometer; it can also automatically open the cover through an external device, which is not shown in detail in the figure. The heating film 35 can adopt LF002 or silicone rubber heating film; the control module 39 can adopt the North China Industrial Control MITX-6916 industrial computer.

[0065] like Figures 1 to 5 As shown, a first bracket 41 is provided on the base 11 , and the receiving tank 12 is mounted on the first bracket 41 through a clamp.

[0066] Specifically, the first bracket 41 is fixed vertically to the left edge of the base 11. The clamp is a semi-circular structure, and its inner diameter is adjustable via bolts. Each set of holding tanks 12 corresponds to a corresponding clamp, clamping the middle of the tank body to ensure that the holding tank 12 is suspended vertically and prevent uneven feeding caused by tilting. During installation, the holding tank 12 can be quickly installed and removed by loosening the bolts. The silicone pad is resistant to corrosion by silicone rubber solvents and is suitable for long-term use.

[0067] The base 11 is also provided with a second bracket 42, which is provided with a first telescopic cylinder 43 and a vacuum pump 44 for eliminating bubbles in the slurry. The movable rod of the first telescopic cylinder 43 is connected to the lid of the mixing tank 15, and the vacuum pump 44 is connected to a pipe on the lid of the mixing tank 15. The first telescopic cylinder 43 and the vacuum pump 44 are both electrically connected to the control module 39.

[0068] Specifically, the second bracket 42 is located in front of the first bracket 41 and provides stable support for the first telescopic cylinder 43 and vacuum pump 44. The first telescopic cylinder 43 is mounted horizontally in the middle of the crossbeam of the second bracket 42. Its movable rod is rigidly connected to the lid of the mixing tank 15 via a flange, driving the lid to rise and fall vertically. When closed, the lid fits against the silicone sealing ring at the tank opening, ensuring a tight seal for the mixing tank 15. The vacuum pump 44 is fixed to one side of the bracket and connected to the exhaust port of the tank lid via a negative pressure-resistant silicone tube. The tube is equipped with an electromagnetic vacuum valve (not shown).

[0069] When the stirring tank 15 needs to be degassed, the first telescopic air cylinder 43 drives the tank cover to close → the vacuum valve opens → the vacuum pump 44 starts to pump (for 30-60s, automatically adjusted according to the viscosity of the slurry) → the vacuum pump 44 stops after degassing is completed → the vacuum valve is closed → the air cylinder drives the tank cover to open. The air cylinder realizes the automatic opening and closing of the tank cover, replacing manual operation; the vacuum pump 44 cooperates with the sealed tank cover to eliminate the bubbles in the slurry; the control module 39 linkage ensures the accurate timing of degassing, improves the homogeneity of the slurry, and at the same time avoids the problem of poor sealing caused by manual operation.

[0070] The stirring part also includes a stirring motor 23 mounted on the tank cover of the stirring tank 15, and the stirring shaft 16 is connected with the output shaft of the stirring motor 23. The turbulence vane includes four groups of main vane groups and multiple groups of auxiliary vanes 19 uniformly distributed along the radial direction, the main vane group includes two arc-shaped vanes 17 with an included angle of 120°, multiple turbulence holes 18 are formed on the arc-shaped vanes 17, and the multiple groups of auxiliary vanes 19 are located below the main vane group. The auxiliary vane 19 is connected with the stirring shaft 16 through a torsion spring 21, and in a normal state, the auxiliary vane 19 is folded at an angle of 45° with the arc-shaped vane 17. After being unfolded, a double-layer stirring structure is formed, and a silica gel scraper 22 is arranged at the end of the arc-shaped vane 17. The stirring motor 23 is electrically connected with the control module 39.

[0071] Specifically, the stirring part adopts "double-mode dynamic turbulence + self-cleaning", which is suitable for the mixing requirements of high-viscosity silicone rubber:

[0072] Drive system: the stirring motor 23 is rigidly connected with the stirring shaft 16 through a shaft coupling, the motor housing is designed to be waterproof, and the output shaft adopts a spline structure to ensure that there is no slipping phenomenon during high-viscosity stirring. Four groups of main vanes are uniformly distributed at an angle of 90° along the circumference, each group is composed of two arc-shaped vanes 17 with an included angle of 120°, and the surface of the vane is treated by electrolytic polishing. Turbulence holes 18 are formed in the middle of the vane, and when stirring, a pressure difference is formed inside and outside the hole, which forces the slurry to pass through the hole to form turbulence and break the internal bubbles; four groups of auxiliary vanes 19 are arranged below the main vanes, and each group is hinged to the stirring shaft 16 through a torsion spring 21. In a normal state, the auxiliary vane 19 is folded at an angle of 45° with the main vane under the action of the spring, for example, when the rotating speed is greater than or equal to 300 rpm, the centrifugal force overcomes the spring torque to unfold to the horizontal, forming two layers of interleaved stirring areas - the upper main vane breaks the bubbles, and the lower auxiliary vane 19 enhances the shear force at the bottom to make the material at the dead angle of the tank bottom participate in the circulation. The dynamic vane structure does not need additional driving, and the working mode is automatically switched by the rotating speed;

[0073] Self-cleaning structure: the end of the arc-shaped vane 17 is embedded with a silica gel scraper 22, which is attached to the tank wall and removes the attached slurry in real time when the stirring shaft 16 rotates, avoiding the solidification of high-viscosity materials on the tank wall.

[0074] Further, the control module 39 automatically adjusts the motor speed according to the preset stirring program:

[0075] Feed stage (0-5min): 50rpm, vice blade 19 retracted to avoid splashing;

[0076] Mixing stage (5-15min): 300rpm, vice blade 19 unfolded to enhance shear;

[0077] Homogenization stage (15-20min): 500rpm, combined with vacuum pump 44 to improve defoaming effect.

[0078] Specific can be adjusted according to actual effect.

[0079] As shown in Figures 1 to 10 The first transmission mechanism 45 is provided on the mounting table 24, the transfer plate 26 is installed on the sliding block of the first transmission mechanism 45, and the first transmission mechanism 45 is electrically connected with the control module 39.

[0080] Specifically, the first transmission mechanism 45 adopts a ball screw sliding table, which is suitable for the high-precision linear motion requirement of the transfer table 25, can carry the transfer plate 26 to move repeatedly on the mounting table 24, and complete the movement of the liquid carrying plate from below the pipette 31 to below the pneumatic clamp 55.

[0081] The transfer plate 26 and the curing table 32 are provided with a plurality of clamping grooves, and the liquid carrying plate is provided with a clasp 28 on both sides. The clasp 28 is clamped in the clamping groove, and the clasp 28 or the clamping groove is provided with a conductive contact 46 on the abutting surface. The conductive contact 46 is used to transmit electrical signals when the clasp 28 is clamped with the clamping groove. The liquid carrying plate is provided with a weight sensor 47 and a temperature sensor 48, and the weight sensor 47 and the temperature sensor 48 are electrically connected with the control module 39.

[0082] Specifically, the structure realizes the fixation and state monitoring of the liquid carrying plate through "mechanical positioning + electrical signal linkage", and the details are as follows:

[0083] Clamping groove and clasp 28: The clamping grooves on the transfer plate 26 and the curing table 32 are made of wear-resistant POM plastic, and the slot has a round corner guide to facilitate the rapid alignment of the liquid carrying plate. The clasp 28 on both sides of the liquid carrying plate is an L-shaped elastic steel sheet 71, the surface is chrome plated for rust prevention, and the end is in the form of an inverted hook. When the clasp 28 is clamped into the clamping groove, the inverted hook is clamped with the protrusion at the bottom of the groove to ensure that there is no looseness during transfer or detection.

[0084] Conductive contact 46 configuration: A set of conductive contacts 46 are embedded on the abutting surface of the clasp 28 and the clamping groove, which are made of gold-plated copper sheets. The contacts are covered with thick beryllium copper springs. When the clasp 28 is clamped tightly, the springs are deformed to make the contacts touch, forming a power supply and signal transmission double channel, avoiding the problem of traditional wired connection being pulled off during transfer.

[0085] Sensor and signal transmission: the weight sensor 47 built in the carrier liquid plate is a micro strain gauge type HBM1-C9C / 500g-S, installed inside the carrier liquid plate; the temperature sensor 48 is a PT1000 platinum resistance, embedded in the carrier liquid plate. The signal lines of the two are connected to the conductive contact 46 through internal wiring of the carrier liquid plate, and when the contact is conductive, the sensor data is transmitted to the control module 39.

[0086] The transfer assembly includes two groups of second transmission mechanisms 49, the pipette 31 is connected to one of the two groups of second transmission mechanisms 49 through a transmission member, the transmission member includes a mounting plate 51 and a second telescopic cylinder 52, the second telescopic cylinder 52 is installed on the sliding block of one of the two groups of second transmission mechanisms 49, and the pipette 31 is installed on the movable rod of the second telescopic cylinder 52 through the mounting plate 51. The second transmission mechanism 49 and the second telescopic cylinder 52 are electrically connected with the control module 39.

[0087] Specifically, the two groups of second transmission mechanisms 49 of the transfer assembly are horizontally arranged ball screw slides, and the sliding blocks can move along the length direction of the transfer table 25 and are controlled by the control module 39 through signals.

[0088] In the transmission member connected with the pipette 31, the mounting plate 51 is an L-shaped plate fixed on the sliding block of one of the two groups of transmission mechanisms through bolts, used for bearing the second telescopic cylinder 52; the movable rod of the cylinder is rigidly connected with the pipette 31 through a connecting plate 63, the pipette 31 is an electric micropipette, and the liquid suction nozzle is made of disposable polypropylene material, connected with the head of the pipette 31 through buckles, convenient for replacement to prevent pollution.

[0089] During operation, the control module 39 drives the two according to the preset program:

[0090] The second transmission mechanism 49 drives the sliding block to move, and positions the pipette 31 above the discharge port of the stirring tank 15 or the carrier liquid plate;

[0091] The second telescopic cylinder 52 is elongated to push the pipette 31 to descend to the liquid suction / drainage position, and the descending height is automatically adjusted according to the target position;

[0092] After the pipette 31 completes liquid suction, the pipette 31 is controlled by the internal piston motor, the liquid suction speed is adjustable in three gears, suitable for different viscosity slurries, and after liquid drainage, the cylinder is contracted to drive the pipette 31 to ascend and reset.

[0093] The sliding block of the other group of second transmission mechanisms 49 is provided with a third transmission mechanism 53, the sliding block of the third transmission mechanism 53 is provided with a third telescopic cylinder 54, and the movable rod of the third telescopic cylinder 54 is provided with a pneumatic clamping jaw 55 for clamping the carrier liquid plate. The third transmission mechanism 53, the third telescopic cylinder 54 and the pneumatic clamping jaw 55 are electrically connected with the control module 39.

[0094] Specifically, this component forms a three-dimensional motion system to achieve the grasping and transportation of the liquid carrier plate. The details are as follows:

[0095] The second transmission mechanism 49 is arranged symmetrically on the side of the pipette 31, and the third transmission mechanism 53 is vertically installed on the slider of the second transmission mechanism 49. The third transmission mechanism 53 is a screw slide, and the third telescopic cylinder 54 is installed at the front end of the slider of the third transmission mechanism 53, and the pneumatic clamp 55 is installed at the end of the cylinder movable rod.

[0096] Further,

[0097] The transmission mechanism moves the clamp horizontally to just above the liquid carrier plate; the transmission mechanism drives the clamp down to the gripping height; the telescopic cylinder fine-tunes the position of the clamp to ensure alignment with the liquid carrier plate buckle; the pneumatic clamp 55 closes, and after the pressure sensor feedback reaches the set value, the cylinder rises to lift the liquid carrier plate; the second transmission mechanism 49 and the third transmission mechanism 53 are linked to transfer the liquid carrier plate to the card slot of the curing table 32 or above the infrared spectrometer 33; the cylinder descends, the clamp is released, and the placement of the liquid carrier plate is completed.

[0098] Two sets of weighing platforms 58 for placing and weighing the mixing tank 15 are further provided on the base 11 . A rotating cylinder 59 for transporting the mixing tank 15 is provided between the two sets of weighing platforms 58 . The mixing tank 15 is connected to the rotating cylinder 59 .

[0099] Specifically, in the initial state: the mixing tank 15 is located above the first weighing platform 58, and raw materials are added and mixed;

[0100] Weighing stage: The control module 39 reads the weighing instrument data and monitors the amount of raw material added in real time. After mixing is completed, the rotating cylinder 59 is started, driving the mixing tank 15 to rotate 90° to above the second weighing platform 58. The second weighing platform 58 weighs again to verify the weight loss during the mixing process. After verification, preparations are made for unloading.

[0101] like Figures 1 to 11 As shown, a third bracket 61 is mounted on the base 11, with a first electric push rod 62 mounted on top of the third bracket 61. A scraper is mounted on the movable rod of the first electric push rod 62, which is used to scrape the slurry on the liquid carrier plate. The scraper's ends are connected to connecting plates 63. Two sets of damping rods 64 are mounted on the third bracket 61, and the connecting plates 63 are connected to the damping rods 64.

[0102] The scraper structure includes a main board 29, a scraper plate 65, and a cleaning plate 66. The scraper plate 65 and the cleaning plate 66 are connected at 90 degrees and are connected to the main board 29 via a rotating shaft. A drive motor 67 is installed on one side of the main board 29, and the output shaft of the drive motor 67 is connected to the rotating shaft.

[0103] The scraping plate 65 is an elongated plate with a wedge-shaped cutting edge at its bottom edge, inlaid with a ceramic plate 68. The cleaning plate 66 is also an elongated plate with a brush 69 at its bottom, angled toward the free end of the cleaning plate 66. A resilient steel plate 71 is attached to the base of the brush 69. A stopper 72 is provided on the side of the scraping plate 65 near the cleaning plate 66, with the end of the cleaning plate 66 abutting against the stopper 72.

[0104] Specifically, the scraper system achieves the leveling and residue cleaning of silicone rubber slurry through "dual-function switching + elastic support". The details are as follows:

[0105] The third bracket 61: It adopts "冂" type aluminum alloy profile, and two sets of damping rods 64 are symmetrically installed on both sides of the bracket. The connecting plate 63 is connected to the movable end of the damping rod 64 to ensure that the scraper lifting process is smooth and without shaking. The main board 29 and the movable rod of the first electric push rod 62 are rigidly connected through a flange, and the drive motor 67 is integrated inside.

[0106] The wedge-shaped edge at the bottom of the scraping plate 65 is inlaid with a ceramic piece 68; the length matches the width of the liquid carrier plate; the ceramic piece 68 is bonded to the substrate through epoxy resin to ensure long-term use without loosening; the wedge-shaped edge, combined with the high hardness of ceramic, can scrape high-viscosity silicone rubber slurry flat and eliminate residue on the edge of the liquid carrier plate.

[0107] The brush 69 is made of PA612 nylon wire and embedded in an aluminum alloy base plate; a thick elastic steel sheet 71 is embedded at the root of the brush 69, and the end of the steel sheet is integrally formed with the cleaning plate 66, so that the brush 69 generates elastic bending when it contacts the liquid carrier plate; the brush 69 is tilted 45° toward the free end, forming a "forward push" cleaning structure, which, combined with the elasticity of the steel sheet, gathers the residual slurry to the edge; the block 72 limits the maximum rotation angle of the cleaning plate 66 to 90°, ensuring structural stability during the switching process.

[0108] Furthermore, the first electric push rod 62 and the drive motor 67 are both controlled by the control module 39 through signals to implement the following logic:

[0109] Scraping stage: the electric push rod descends to the set height, the driving motor 67 turns the scraping plate 65 to the working position, and the scraper completes the scraping when the liquid carrier moves;

[0110] Cleaning stage: the electric push rod rises 5mm, the motor rotates 90° to switch to the cleaning plate 66, the push rod descends again to make the brush 69 touch the liquid carrier plate, and the scraper moves in the opposite direction to complete the cleaning;

[0111] Pressure compensation: The damping rod 64 provides real-time feedback of load changes, and the control module 39 dynamically adjusts the output force of the electric push rod to ensure consistent leveling effects for slurries with different viscosities.

[0112] A second electric push rod 73 is provided on the curing table 32 , and a movable rod of the second electric push rod 73 is connected to the cover plate 36 .

[0113] The pressure member includes four groups of pressure plates 37 and four groups of third electric push rods 38. The third electric push rods 38 are installed on the top of the cover plate 36. The pressure plates 37 correspond to the independent detection areas. The movable rods of the third electric push rods 38 pass through the cover plate 36 and are connected to the pressure plates 37.

[0114] The second electric push rod 73 and the third electric push rod 38 are both electrically connected to the control module 39 .

[0115] The top of the baffle 34 is provided with multiple groups of guide grooves 74 and multiple groups of liquid collecting chambers 75. The guide grooves 74 are connected with the liquid collecting chamber 75. The liquid collecting chamber 75 is provided with a liquid absorbing strip 76. The liquid absorbing strip 76 is made of heat-resistant silicone sponge.

[0116] Specifically, the second electric push rod 73 of the curing station 32 is vertically fixed at the rear end. Its movable rod is connected to the cover plate 36 via a joint bearing, and its rise and fall are controlled by a built-in displacement sensor. Four sets of third electric push rods 38 are arranged in a 1×4 matrix on top of the cover plate 36. The movable rods are connected to the pressure plate 37 to apply pressure. A "mouth"-shaped guide groove 74 at the top of the baffle 34 connects to the liquid collection chamber 75. A heat-resistant silicone sponge absorbent strip 76 within the chamber collects spilled slurry. The absorbent strip 76 is reusable.

[0117] Furthermore, when the system works in coordination, the cover plate 36 is closed first, and then the four sets of push rods are pressurized synchronously, adapting to the multi-parameter parallel testing; the overflowing slurry flows through the guide groove 74 into the liquid collection chamber 75. After curing is completed, the push rods are reset in sequence.

[0118] The basic principles, main features and advantages of the present invention are shown and described above. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments.

Claims

1. A silicone rubber curing rate detection device with an automatic sample preparation function, comprising a base (11), characterized in that: The base (11) is provided with a preparation area and a detection area; The preparation area is provided with a feeding unit and a stirring unit, wherein the feeding unit comprises a plurality of holding tanks (12) and pump feeding parts, and the stirring unit comprises a stirring tank (15) and a stirring part; The pumping member includes a control valve (13) and a metering pump (14), and the holding tank (12) is connected to the tank cover of the stirring tank (15) through a pipeline connecting the control valve (13) and the metering pump (14) in series; The stirring member comprises a stirring shaft (16), and the stirring shaft (16) is sleeved with a turbulent blade for breaking bubbles of high-viscosity silicone rubber, preventing the tank wall from sticking, and stirring with variable dosage adaptation; The preparation area is further provided with a mounting platform (24) and a transfer platform (25), the transfer platform (25) is provided with a transfer plate (26) and a plurality of liquid-carrying platforms (27) connected to the transfer plate (26) by disassembly, the transfer plate (26) is provided with a scraper for leveling the slurry, a pipette (31) is provided below the transfer platform (25), and a transfer mechanism for transferring the liquid-carrying platform (27) and the pipette (31) is provided on the transfer platform (25); A curing station (32) and an infrared spectrometer (33) are provided in the detection area. Three groups of baffles (34) are provided on the curing station (32) to form four groups of independent detection areas. A heating film (35) is provided at the bottom of the independent detection area. A hinged cover plate (36) is provided on one side of the curing station (32). A pressure member corresponding to the independent detection area is provided on the cover plate (36). A control module (39) is provided on the base (11), and the infrared spectrometer (33) and the heating film (35) are both electrically connected to the control module (39).

2. The device for detecting the curing rate of silicone rubber with an automatic sample preparation function according to claim 1, characterized in that: A first bracket (41) is provided on the base (11), and the holding tank (12) is mounted on the first bracket (41) via a clamp; The base (11) is further provided with a second bracket (42), the second bracket (42) is provided with a first telescopic cylinder (43) and a vacuum pump (44) for eliminating slurry bubbles, the movable rod of the first telescopic cylinder (43) is connected to the tank cover of the stirring tank (15), and the vacuum pump (44) is connected to the tank cover pipe of the stirring tank (15); The first telescopic cylinder (43) and the vacuum pump (44) are both electrically connected to the control module (39).

3. The device for detecting the curing rate of silicone rubber with an automatic sample preparation function according to claim 2, characterized in that: The stirring member further comprises a stirring motor (23), the stirring motor (23) being mounted on the tank cover of the stirring tank (15), and the stirring shaft (16) being connected to the output shaft of the stirring motor (23); The spoiler blades include four groups of main blades uniformly distributed along the radial direction and multiple groups of auxiliary blades (19), the main blade group includes two arc-shaped blades (17) with an angle of 120 degrees, the arc-shaped blades (17) are provided with multiple groups of spoiler holes (18), and multiple groups of auxiliary blades (19) are located below the main blade group. The auxiliary blades (19) are connected to the stirring shaft (16) through torsion springs (21). Under normal conditions, the auxiliary blades (19) and the arc-shaped blades (17) are folded at 45 degrees, and a double-layer stirring structure is formed after unfolding. The ends of the arc-shaped blades (17) are provided with silicone scrapers (22); The stirring motor (23) is electrically connected to the control module (39).

4. The device for detecting the curing rate of silicone rubber with an automatic sample preparation function according to claim 3, characterized in that: A first transmission mechanism (45) is provided on the mounting platform (24), the transfer plate (26) is mounted on a slider of the first transmission mechanism (45), and the first transmission mechanism (45) is electrically connected to the control module (39); The transfer plate (26) and the curing table (32) are provided with multiple groups of card slots, and both sides of the liquid carrying plate are provided with card buckles (28), and the card buckles (28) are clamped in the card slots. The fitting surfaces of the card buckles (28) or the card slots are provided with conductive contacts (46), and the conductive contacts (46) are used to transmit electrical signals when the card buckles (28) are clamped with the card slots. A weight sensor (47) and a temperature sensor (48) are provided in the liquid carrying plate, and the weight sensor (47) and the temperature sensor (48) are electrically connected to the control module (39).

5. The device for detecting the curing rate of silicone rubber with an automatic sample preparation function according to claim 4, characterized in that: The transfer assembly includes two groups of second transmission mechanisms (49), the pipette (31) is connected to one of the second transmission mechanisms (49) through a transmission member, the transmission member includes a mounting plate (51) and a second telescopic cylinder (52), the second telescopic cylinder (52) is mounted on a slider of one of the second transmission mechanisms (49), and the pipette (31) is mounted on a movable rod of the second telescopic cylinder (52) through the mounting plate (51); The second transmission mechanism (49) and the second telescopic cylinder (52) are both electrically connected to the control module (39).

6. The device for detecting the curing rate of silicone rubber with an automatic sample preparation function according to claim 5, characterized in that: A third transmission mechanism (53) is provided on the slider of another group of the second transmission mechanisms (49), a third telescopic cylinder (54) is provided on the slider of the third transmission mechanism (53), and a pneumatic clamp (55) for clamping the liquid carrying plate is provided on the movable rod of the third telescopic cylinder (54); The third transmission mechanism (53), the third telescopic cylinder (54), and the pneumatic clamp (55) are all electrically connected to the control module (39); The base (11) is further provided with two sets of weighing platforms (58) for placing and weighing the stirring tank (15). A rotating cylinder (59) for transporting the stirring tank (15) is provided between the two sets of weighing platforms (58). The stirring tank (15) is connected to the rotating cylinder (59).

7. The device for detecting the curing rate of silicone rubber with an automatic sample preparation function according to claim 6, characterized in that: A third bracket (61) is provided on the base (11), a first electric push rod (62) is provided on the top of the third bracket (61), a scraper for scraping the slurry on the liquid carrier plate is installed on the movable rod of the first electric push rod (62), and the two ends of the scraper are connecting plates (63). Two groups of damping rods (64) are provided on the third bracket (61), and the connecting plates (63) are connected to the damping rods (64); The scraper structure includes a main board (29), a scraper plate (65) and a cleaning plate (66). The scraper plate (65) and the cleaning plate (66) are connected at 90 degrees and are connected to the main board (29) via a rotating shaft. A driving motor (67) is provided on one side of the main board (29), and the output shaft of the driving motor (67) is connected to the rotating shaft.

8. The device for detecting the curing rate of silicone rubber with an automatic sample preparation function according to claim 7, characterized in that: The scraping plate (65) is a long strip plate body, the bottom edge of which is a wedge-shaped cutting edge, and a ceramic piece (68) is installed on the cutting edge. The cleaning plate (66) is a long strip plate body, the bottom of which is provided with a brush (69), the brush (69) is inclined toward the free end of the cleaning plate (66), and the root of the brush (69) is provided with an elastic steel sheet (71). The scraping plate (65) is provided with a stopper (72) on the side close to the cleaning plate (66), and the end of the cleaning plate (66) abuts against the stopper (72).

9. The device for detecting the curing rate of silicone rubber with an automatic sample preparation function according to claim 1, characterized in that: A second electric push rod (73) is provided on the curing table (32), and a movable rod of the second electric push rod (73) is connected to the cover plate (36); The pressure member includes four groups of pressure plates (37) and four groups of third electric push rods (38), the third electric push rods (38) are installed on the top of the cover plate (36), the pressure plates (37) correspond to the independent detection areas, and the movable rods of the third electric push rods (38) pass through the cover plate (36) and are connected to the pressure plates (37); The second electric push rod (73) and the third electric push rod (38) are both electrically connected to the control module (39).

10. The device for detecting the curing rate of silicone rubber with an automatic sample preparation function according to claim 9, characterized in that: The top of the baffle (34) is provided with a plurality of guide grooves (74) and a plurality of liquid collecting cavities (75), the guide grooves (74) are communicated with the liquid collecting cavities (75), and a liquid absorbing strip (76) is provided inside the liquid collecting cavities (75), and the liquid absorbing strip (76) is made of a temperature-resistant silicone sponge.

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