Foam tightness detection device
By combining an ultrasonic probe with a conveyor belt, the foam density detection device solves the problem of insufficient foam density detection accuracy in existing technologies, achieving efficient and automated foam density detection and improving detection accuracy and production efficiency.
Patent Information
- Application Number
- CN202520300168.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-24
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2035-02-24
AI Technical Summary
Existing methods for detecting foam density mainly rely on gravimetric methods, which are difficult to meet the requirements for high-precision detection, especially for foam samples with light weight and low density. External factors can also cause inaccurate measurement results.
A foam density detection device was designed, which combines an ultrasonic probe and a conveyor belt. The ultrasonic probe detects the density of the foam during movement, calculates the density using the propagation characteristics of ultrasonic waves in the foam, and achieves automated detection through automatic conveyor belt transport.
It improves testing efficiency and accuracy, reduces manual operation, and enhances the automation level and production efficiency of the foam production process.
Smart Images
Figure CN223611322U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a foam detection technical field, specifically to a foam density detection device. BACKGROUND
[0002] Foam is widely used in many fields such as industrial production and daily life. In the production, processing and quality control of foam, density as a key indicator plays a decisive role in the performance and application scenario of foam. The existing foam density detection is usually sampling detection, which has certain limitations. At present, the most common method for foam density detection is weighing method. However, for light and low-density foam samples, the precision of high-precision electronic balance may not meet the high-precision detection requirements. Even if the balance has high precision, external factors such as slight air flow fluctuation and electrostatic adsorption may interfere with the measurement results during weighing, resulting in deviation of mass reading and affecting the accuracy of final density calculation. UTILITY MODEL CONTENTS
[0003] The utility model aims at providing a foam density detection device, which can convey the foam to be detected to the lower side of the ultrasonic probe through the conveying belt during the downward movement of the ultrasonic probe, and detect the density of the foam through ultrasonic waves.
[0004] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of a foam density detection device, which comprises a rack, a detection mechanism arranged on the rack, and a conveying mechanism arranged below the detection mechanism.
[0005] The detection mechanism comprises an instrument main body, the instrument main body is connected with an ultrasonic probe and a display system through a circuit, a vertically movable flat plate is installed in the rack, and the ultrasonic probe is fixedly installed on the flat plate.
[0006] The conveying mechanism comprises a conveying belt and a transmission drum, chains are installed on both sides of the conveying belt, end sprockets are installed at both ends of the chains, and the end sprockets are fixedly installed on the rotating shaft of the transmission drum.
[0007] An electric push rod is installed in the rack, a first rack is arranged on the electric push rod, a rotating shaft is installed in the middle of the rack, a rotatable shaft sleeve is sleeved on the rotating shaft, a first gear is sleeved at one end of the shaft sleeve, the first gear is engaged with the first rack, a one-way rotating intermediate sprocket is sleeved at the other end of the shaft sleeve, the intermediate sprocket is engaged with the chain, a second gear is installed on the rack, the second gear is engaged with the first rack, a second rack is connected to the flat plate, and the second rack is engaged with the second gear.
[0008] The electric push rod moves upward, drives the ultrasonic probe to move downward, and simultaneously drives the conveying belt to move forward.
[0009] Further, the instrument main body is installed at the upper end of the rack, the probe support is installed in the rack, the telescopic rods are installed at the four corners of the probe support, the flat plate is connected at the top end of the telescopic rods, the ultrasonic probe is installed at the center position of the flat plate, and the display system is installed on one side of the rack.
[0010] Further, the two ends of the flat plate are connected with the pressing plates, the length of the pressing plates is greater than that of the ultrasonic probe, the pressing plates are telescopic rectangular flat plate structures, and the reset springs are arranged in the pressing plates.
[0011] Further, the top end of the electric push rod is fixedly installed with the push plate, the first rack is fixedly connected vertically on the push plate, and the convex tooth sections are arranged on the first rack.
[0012] Further, the middle of the rack is installed with the operation plate, square holes are arranged at the two ends of the operation plate, the first rack can pass through the square holes, and the rotating shaft is installed in the square holes.
[0013] Further, the one-way wheel is sleeved with the first gear, the pawl is hinged on the rotating shaft, the bottom end of the pawl is installed with the spring, and the other end of the spring is connected with the rotating shaft.
[0014] Further, the one-way wheel is a circular wheel disc with one-way tooth shape, the wheel teeth are arranged in the inner circle of the wheel disc and are uniformly distributed in the circumferential direction.
[0015] Further, the transmission drum is installed at the two ends of the conveying belt, the U-shaped protection plates are installed at the two sides of the conveying belt, the chain is installed in the protection plates, and the transmission drum is fixed on the ground through the support.
[0016] Compared with the prior art, the device has the beneficial effects that: the sponge is placed on the conveying belt, the electric push rod is operated to drive the first rack to move upward, the first gear is driven to rotate synchronously with the intermediate sprocket, the conveying belt is driven to move forward, the first rack drives the second gear to rotate, the second rack is driven to move downward, the ultrasonic probe is driven to move downward, and the density of the sponge is detected. After detection, the electric push rod is operated to move downward, the ultrasonic probe is driven to move upward, the conveying belt is kept stationary through the cooperation of the one-way wheel and the pawl, and the conveying belt continues to move forward when the electric push rod moves upward next time, so that the density detection work of the sponge on the production line is automatically completed.
[0017] The device can convey the foam to the lower side of the ultrasonic probe through the conveying belt in the process of moving the ultrasonic probe downwards, the conveying mechanism is automatically conveyed, the workload of manual carrying in the detection process is reduced, the detection efficiency is improved, the device is connected with the foam production equipment, and the automation degree and production efficiency of the whole foam density detection process are improved. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 It is the overall structure schematic diagram of the utility model;
[0019] Figure 2 It is the overall internal structure schematic diagram of the utility model;
[0020] Figure 3 It is the front view structure schematic diagram of the utility model;
[0021] Figure 4 It is the internal structure schematic diagram of the utility model;
[0022] Figure 5 It is the first gear and first rack and intermediate sprocket connection relationship schematic diagram of the utility model;
[0023] Figure 6 It is the first gear and one-way wheel sleeve connection relationship schematic diagram of the utility model;
[0024] Wherein, 11- rack, 12- electric push rod, 13- push plate, 14- operating plate, 15 conveying belt, 16- chain, 17- guard plate, 18- end sprocket, 19- transmission drum, 21- instrument main body, 22- ultrasonic probe, 23- display system, 24- probe support, 25- telescopic rod, 26- flat plate, 27- pressing plate, 31- first rack, 32- rotating shaft, 33- operating plate, 34- first gear, 35- intermediate sprocket, 36- one-way wheel, 37- claw, 38- second gear, 39- second rack. DETAILED DESCRIPTION
[0025] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. It should be understood that the preferred embodiments described herein are only used to explain and illustrate the present application, and are not used to limit the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application. In the embodiments, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the present application.
[0026] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, it can be electrically connected, it can be hydraulic connection, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0027] Referring to Figures 1-6 As shown in the drawings, a foam density detection device, including a rack 11, the rack 11 as the support base of the whole device, which is provided with a detection mechanism, the detection mechanism is through the ultrasonic densimeter to detect the density of foam, the detection mechanism below is provided with conveying mechanism, conveying mechanism can according to the preset speed and rhythm, the foam sample to be detected is transported to the detection area, after completing the detection, the conveying mechanism conveying the foam that has been detected out of the detection area, facilitate subsequent classification, arrangement or further processing.
[0028] The above-mentioned rack 11 is a rectangular frame structure composed of square tubes and sheet metal. Four casters are installed below the rack 11. A detection device is arranged at the upper end of the rack 11. It should be noted that the detection device is an ultrasonic densimeter. The ultrasonic densimeter can detect the density of the foam in a short time and analyze it. The ultrasonic densimeter includes an instrument main body 21 installed at the top end of the rack 11. The instrument main body 21 is connected with an ultrasonic probe 22 and a display system 23 through a circuit. The ultrasonic probe 22 is located at the middle position inside the rack 11. The ultrasonic probe 22 is in close contact with the surface of the foam. When the ultrasonic wave emitted by the instrument main body 21 propagates in the foam, the density of the foam will affect the propagation speed and reflection, refraction, etc. of the ultrasonic wave during propagation. When the ultrasonic wave encounters different structures or boundaries inside the foam, reflection occurs, and the reflected wave is received by the probe. The instrument main body 21 measures the propagation time of the ultrasonic wave in the foam, the intensity and phase of the reflected wave, etc. Then, according to the pre-established relationship model or algorithm between the ultrasonic wave propagation characteristics and the density of the foam, the density of the foam is calculated. The calculated density is displayed through the display system 23 installed on one side of the rack 11.
[0029] The ultrasonic probe 22 is installed on a probe support 24. The probe support 24 is a rectangular structure. The probe support 24 is fixedly installed at the upper end of the rack 11. Telescopic rods 25 are installed at the four corners of the probe support 24. Flat plates 26 are installed at the top ends of the telescopic rods 25. The ultrasonic probe 22 is installed at the center position of the flat plates 26 and is located below the flat plates 26 and above the conveying mechanism. Perpendicular pressing plates 27 are fixedly connected at both ends of the flat plates 26. The length of the pressing plates 27 is greater than the length of the ultrasonic probe 22. The pressing plates 27 are telescopic rectangular plate structures. Reset springs are arranged inside the pressing plates 27. The pressing plates 27 can position the foam during detection.
[0030] A conveying mechanism passes through the middle position of the rack 11. The conveying mechanism includes a conveyor belt 15. The foam to be detected is placed on the conveyor belt 15. The conveyor belt 15 can transport the foam directly below the ultrasonic probe 22. Drive drums 19 are installed at both ends of the conveyor belt 15. U-shaped protective plates 17 are installed on both sides of the conveyor belt 15. Ring-shaped chains 16 are installed in the protective plates 17. End sprockets 18 are installed at both ends of the chains 16. The end sprockets 18 are fixedly installed on the shafts of the drive drums 19. The conveying mechanism is fixed to the ground through a support.
[0031] A vertical electric push rod 12 is fixedly installed in the middle of the lower end of the frame 11, the top end of the electric push rod 12 is fixedly installed with a push plate 13, the two ends of the push plate 13 are fixedly connected with a long strip-shaped first gear rack 31, the first gear rack 31 is provided with a convex tooth section. A operation plate 14 is installed in the middle of the frame 11, the two ends of the operation plate 14 are provided with a square hole, the first gear rack 31 can pass through the square hole, a cylindrical rotating shaft 32 is installed in the square hole, a rotatable shaft sleeve is sleeved on the rotating shaft 32, a first gear 34 is sleeved on one end of the shaft sleeve, the first gear 34 is in meshing with the convex tooth section on the first gear rack 31, when the first gear rack 31 moves vertically, the first gear 34 will rotate with the convex tooth section, a middle sprocket 35 is sleeved on the other end of the shaft sleeve, the middle sprocket 35 is in meshing with the chain 16 on the conveying mechanism, the middle sprocket 35 is located in the middle of the chain 16, when the middle sprocket 35 rotates, the chain 16 can rotate with it, and the chain 16 can drive the conveyor belt 15 to move forward when it rotates.
[0032] A one-way wheel 36 is sleeved in the center of the first gear 34, the one-way wheel 36 is a circular disc with one-way tooth shape, the teeth are located in the inner circle of the disc and are uniformly distributed in the circumferential direction, a claw 37 is hinged on the rotating shaft 32 and cooperates with the teeth, a spring is installed at the bottom end of the claw 37 and connected to the rotating shaft 32 at the other end. The spring provides a constant elastic force for the claw 37, which always points to the one-way wheel 36, so that the claw 37 can contact the one-way wheel 36, and the head of the claw 37 cooperates with the tooth groove of the one-way wheel 36. When the first gear 34 rotates under the drive of the first gear rack 31, the middle sprocket 35 will also rotate, at this time, the one-way wheel 36 will also rotate with it, when the one-way wheel 36 rotates forward, the claw 37 can smoothly slide into the tooth groove; when the one-way wheel 36 is subjected to a reverse force, the head of the claw 37 will be clamped on the tooth back of the tooth groove, preventing the reverse rotation of the one-way wheel 36.
[0033] A rotatable second gear 38 is installed on the side wall of the frame 11, the second gear 38 is located above the first gear 34, the second gear 38 can mesh with the first gear rack 31, a second gear rack 39 is fixedly connected at both ends of the detection mechanism plate 26, the second gear rack 39 can also mesh with the second gear 38, and the first gear rack 31 and the second gear rack 39 are located on the two sides of the second gear 38 respectively.
[0034] When the electric push rod 12 drives the first rack 31 to move upward, the first gear 34 meshes with the convex tooth section on the first rack 31, drives the first gear 34 to rotate simultaneously with the intermediate sprocket 35, drives the chain 16 to move forward with the conveyor belt 15, at the same time, the first rack 31 can drive the second gear 38 to rotate, drives the second rack 39 to move downward, thereby can drive the ultrasonic probe 22 installed on the flat plate 26 to move downward. Conversely, when the electric push rod 12 drives the first rack 31 to move downward, the ultrasonic probe 22 moves upward.
[0035] It should be noted that in the process of moving the ultrasonic probe 22 downward, the foam is also transported to the lower side of the ultrasonic probe 22 by the conveyor belt 15. When the electric push rod 12 continues to elongate upward, the interval space between the convex tooth sections will not mesh with the first gear 34, the conveyor belt 15 will no longer move forward, and the ultrasonic probe 22 can continue to move downward and cut into the surface of the foam to detect the foam. When the electric push rod control push plate 13 moves upward, the pawl 37 is clamped in the tooth groove of the one-way wheel, at this time the shaft sleeve cannot rotate freely, and can drive the rotating shaft to rotate synchronously;
[0036] When the electric push rod control push plate 13 moves downward, the end of the pawl 37 can slide into the adjacent tooth groove from one tooth groove of the one-way wheel, at this time the one-way wheel and the rotating shaft can rotate relatively, that is, when the one-way wheel rotates in the clockwise or counterclockwise direction, the rotating shaft is stationary, so that the conveyor belt is stationary. The one-way movement effect of the conveyor belt 15 is realized.
[0037] Working principle: the conveying structure can be connected with the foam production equipment, the foam is placed on the conveyor belt 15, then the electric push rod 12 is operated to drive the first rack 31 to move upward, drives the first gear 34 to rotate synchronously with the intermediate sprocket 35, drives the conveyor belt 15 to transport the foam to move forward. At the same time, the first rack 31 drives the second gear 38 to rotate, and drives the second rack 39 to move downward, thereby drives the ultrasonic probe 22 to move downward and detects the density of the foam. After the detection is completed, the electric push rod 12 is operated to move downward, drives the ultrasonic probe 22 to move upward, through the cooperation of the one-way wheel 36 and the pawl 37, the conveyor belt 15 moves in one direction, and the automatic foam density detection work on the production line is realized.
[0038] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.
Claims
1. A foam density detection apparatus, characterized by: Including frame, frame is provided with detection mechanism, detection mechanism below is provided with conveying mechanism; The detection mechanism includes an instrument main body, the instrument main body is connected with ultrasonic probe and display system through line, the frame is installed with vertically movable flat plate, and the ultrasonic probe is fixedly installed on the flat plate; The conveying mechanism includes a conveyor belt and a transmission roller, chain is installed on both sides of the conveyor belt, end sprocket is installed at both ends of the chain, and the end sprocket is fixedly installed on the rotating shaft of the transmission roller; The frame is installed with an electric push rod, the electric push rod is provided with a first rack, a rotating shaft is installed in the middle of the frame, a rotatable shaft sleeve is sleeved on the rotating shaft, a first gear is sleeved on one end of the shaft sleeve, the first gear is engaged with the first rack, a one-way rotating intermediate sprocket is sleeved on the other end of the shaft sleeve, the intermediate sprocket is engaged with the chain, a second gear is installed on the frame and engaged with the first rack, a second rack is connected to the flat plate and engaged with the second gear; When the electric push rod moves upward, the ultrasonic probe moves downward, and the conveyor belt moves forward at the same time, when the electric push rod moves downward, the ultrasonic probe moves upward, and the conveyor belt does not move.
2. A foam density detection device according to claim 1, characterized in that: The instrument main body is installed at the upper end of the frame, a probe support is installed in the frame, telescopic rods are installed at the four corners of the probe support, the flat plate is connected to the top end of the telescopic rods, the ultrasonic probe is installed at the center position of the flat plate, and the display system is installed on one side of the frame.
3. The foam density detection device of claim 1, wherein: Both ends of the flat plate are connected with pressing plates, the length of the pressing plate is greater than the length of the ultrasonic probe, the pressing plate is a telescopic rectangular flat plate structure, and a reset spring is arranged in the pressing plate.
4. The foam density detection device of claim 1, wherein: The top end of the electric push rod is fixedly installed with a push plate, the first rack is fixedly connected vertically to the push plate, and a convex tooth section is arranged on the first rack.
5. The foam density detection device of claim 1, wherein: The middle of the frame is installed with an operation plate, square holes are arranged at both ends of the operation plate, the first rack passes through the square holes, and the rotating shaft is installed in the square holes.
6. The foam density detection device of claim 1, wherein: The center of the first gear is sleeved with a one-way wheel, a pawl is hinged to the rotating shaft, a spring is installed at the bottom end of the pawl, and the other end of the spring is connected to the rotating shaft.
7. A foam density detection apparatus according to claim 6, wherein: The one-way wheel is a circular disc with one-way tooth shape, the gear teeth are located in the inner ring of the disc, and are uniformly distributed in the circumferential direction.
8. The foam density detection device of claim 1, wherein: The transmission roller is installed at both ends of the conveyor belt, U-shaped protective plates are installed on both sides of the conveyor belt, the chain is installed in the protective plates, and the transmission roller is fixed to the ground through a support.