Bed depth measuring device

Abstract

The utility model discloses a kind of material layer thickness measuring devices, it is related to glass production technical field, the material layer thickness measuring device includes sleeve, measuring rod, motion conversion mechanism and reading mechanism, sleeve is detachably arranged on the outer side wall of feeder;Measuring rod front end is provided with pointed structure, measuring rod is arranged in sleeve and can move along the axial movement of sleeve;Motion conversion mechanism is connected with measuring rod and sleeve respectively, motion conversion mechanism can act with the axial movement of measuring rod relative to sleeve;Reading mechanism is arranged in sleeve and is exposed to the outside of sleeve, reading mechanism cooperates with motion conversion mechanism, and material layer thickness scale is provided on reading mechanism.

Description

Technical Field

[0001] This utility model relates to the field of glass production technology, and in particular to a material layer thickness measuring device. Background Technology

[0002] In the rolled glass production process, measuring the thickness of the batch material (raw material mixture) fed by the glass melting furnace is a crucial step in ensuring stable production processes and the quality of the final product. This is because the thickness of the batch material directly affects the melting efficiency of the batch material in the furnace: an excessively thick layer can lead to insufficient melting of the raw materials, while an excessively thin layer may cause drastic temperature fluctuations within the furnace. Both situations will damage the uniformity of the glass product and reduce its mechanical properties. Therefore, precise control of the batch material thickness is a core technical requirement in the rolled glass production process.

[0003] In existing technologies, the industry often indirectly judges the material layer thickness by using the opening scale of the gate of the feeding machine. However, when material accumulates along the edge of the gate, the actual opening of the gate will deviate from the actual thickness of the material layer, and such deviations are often not detected in time. If the gate transmission control structure ages due to long-term use, the pressure of the material layer on the gate will further cause the gate to deviate from the preset control position, thereby significantly increasing the measurement error of the material layer thickness. Utility Model Content

[0004] The main purpose of this invention is to provide a material layer thickness measuring device, which aims to improve the convenience and accuracy of measuring material layer thickness.

[0005] To achieve the above objectives, the material layer thickness measuring device proposed in this utility model includes: A sleeve, which is detachably mounted on the outer wall of the feeding machine; A measuring rod, the measuring rod having a pointed structure at its front end, the measuring rod passing through the sleeve and being movable along the axial direction of the sleeve; A motion conversion mechanism is connected to the measuring rod and the sleeve respectively, and the motion conversion mechanism can move with the axial movement of the measuring rod relative to the sleeve; A reading mechanism is provided on the sleeve and exposed on the outside of the sleeve. The reading mechanism cooperates with the motion conversion mechanism and is provided with a material layer thickness scale.

[0006] In one embodiment, the material layer thickness measuring device further includes an elastic element located inside the sleeve, with both ends of the elastic element fixedly connected to the inner wall of the sleeve and the outer wall of the measuring rod, respectively. During the axial movement of the measuring rod, the elastic element can be compressed by the measuring rod and undergo elastic deformation.

[0007] In one embodiment, a first positioning protrusion is formed at the end of the measuring rod away from the pointed structure; The inner wall of the sleeve is provided with a second positioning protrusion on the side facing the first positioning protrusion; The two ends of the elastic element are respectively sleeved on the first positioning protrusion and the second positioning protrusion.

[0008] In one embodiment, the elastic element is a spring.

[0009] In one embodiment, the motion conversion mechanism includes a rack and a gear; the rack is fixed to the outer wall of the measuring rod along its length, and the gear is rotatably mounted on the inner wall of the sleeve; the rack meshes with the gear, and when the measuring rod moves axially relative to the sleeve, the rack can drive the gear to rotate around its own axis; The reading mechanism includes a pointer and a dial; one end of the pointer is coaxially and fixedly connected to the gear, and the pointer can rotate synchronously with the gear; the dial is fixed to the outer wall of the sleeve, the material layer thickness scale is set on the side of the dial facing the pointer, and the end of the pointer away from the gear points to the material layer thickness scale.

[0010] In one embodiment, a mounting base is fixed to the inner wall of the sleeve, a rotating shaft is passed through the mounting base, and the gear is fixedly sleeved on the outer circumferential surface of the rotating shaft; The axis of the rotating shaft is perpendicular to the axis of the measuring rod, and both ends of the rotating shaft are rotatably connected to the mounting base.

[0011] In one embodiment, the material layer thickness measuring device further includes a baffle, which is disposed on the outer wall of the measuring rod and close to the pointed structure, and the outer diameter of the baffle is larger than the inner diameter of the sleeve; During the axial movement of the measuring rod, the baffle can abut against the end face of the sleeve.

[0012] In one embodiment, the measuring rod is a heat-resistant rod; and / or, the sleeve is a heat-resistant tube.

[0013] In one embodiment, the outer wall of the sleeve is symmetrically provided with two elastic buckles. Each elastic buckle includes a support portion fixedly connected to the sleeve and a locking portion protruding in a direction away from the axis of the sleeve. The locking portion is provided with a guide slope on the side away from the support portion. The outer wall of the feeding machine is provided with a corresponding slot adapted to the elastic buckle. The slot opening width is smaller than the maximum outer diameter of the locking portion, and the locking portion can be elastically deformed and locked into the slot.

[0014] In one embodiment, the outer wall of the feeding machine is fixed with two parallel strip slide rails in the vertical direction, and each of the two slide rails has a T-shaped groove extending in the length direction on the opposite side. The outer wall of the sleeve is provided with a T-shaped slider that matches the T-shaped groove. The T-shaped slider can slide along the length of the T-shaped groove to achieve a detachable connection between the sleeve and the feeding machine. The top of the slide rail is provided with a limiting boss, and the top of the T-shaped slider is provided with a limiting groove that matches the limiting boss. When the T-shaped slider slides to the point where the limiting boss abuts against the limiting groove, the relative position of the sleeve and the feeding machine is fixed. The slide rail has an opening at its bottom end, and the T-shaped slider can slide into or out of the T-shaped groove from the opening.

[0015] The material layer thickness measuring device provided by this utility model solves the problems of measurement deviation and increased error caused by material accumulation along the gate edge and aging of the gate transmission control structure when indirectly judging the material layer thickness through the gate opening scale of the feeding machine in the prior art. Specifically, the sleeve is first detachably installed on the outer wall of the feeding machine to achieve a stable assembly of the device and facilitate subsequent disassembly and maintenance. During measurement, the measuring rod is pushed to move axially along the sleeve. The pointed structure at its front end can easily penetrate the material layer to the bottom of the material layer. During this process, the axial movement of the measuring rod will drive the motion conversion mechanism connected to it to produce a corresponding action. The reading mechanism, which cooperates with the motion conversion mechanism, converts this action into a readable value. The operator can directly check the material layer thickness scale on the reading mechanism exposed on the outside of the sleeve to obtain the actual material layer thickness. The whole process bypasses the gate opening judgment method that is prone to problems and directly measures the material layer. Thus, the detachable sleeve not only flexibly adapts to different specifications of feeding machines but also facilitates the device's own maintenance and replacement; the pointed structure of the measuring rod allows it to smoothly penetrate the material layer, ensuring smooth measurement operation and accurate contact with the bottom of the material layer; the motion conversion mechanism can accurately transmit the movement information of the measuring rod, and together with the graduated reading mechanism, it allows the staff to quickly and intuitively read the data, greatly improving measurement accuracy and avoiding deviations caused by gate-related problems; at the same time, the overall structure can realize direct and timely measurement of the material layer thickness, ensuring stable production processes, and thus ensuring the uniformity and mechanical properties of glass products. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 A schematic diagram of an embodiment of the material layer thickness measuring device provided by this utility model.

[0018] Explanation of icon numbers: 100. Material layer thickness measuring device; 1. Sleeve; 11. Second positioning protrusion; 2. Measuring rod; 21. Pointed structure; 22. First positioning protrusion; 3. Motion conversion mechanism; 31. Rack; 32. Gear; 4. Reading mechanism; 41. Pointer; 42. Dial; 5. Elastic element; 6. Baffle.

[0019] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0021] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0022] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0023] This utility model proposes a material layer thickness measuring device 100.

[0024] Please see Figure 1 In one embodiment, the material layer thickness measuring device 100 includes: Sleeve 1, sleeve 1 is detachably installed on the outer wall of the feeding machine; Measuring rod 2, with a pointed structure 21 at the front end, the measuring rod 2 passes through the sleeve 1 and can move along the axial direction of the sleeve 1; Motion conversion mechanism 3 is connected to measuring rod 2 and sleeve 1 respectively. Motion conversion mechanism 3 can move with the axial movement of measuring rod 2 relative to sleeve 1. The reading mechanism 4 is located on the sleeve 1 and exposed on the outside of the sleeve 1. The reading mechanism 4 cooperates with the motion conversion mechanism 3. The reading mechanism 4 is provided with a material layer thickness scale.

[0025] It should be noted that the sleeve 1, serving as the installation foundation and protective structure of the device, is made of a wear-resistant, high-temperature-resistant, and chemically stable material, such as S30408 ​​or S31608 stainless steel. This type of material can resist the frictional erosion of hard particles such as quartz sand in the glass batch, while also withstanding the high-temperature environment surrounding the feeder, preventing deformation or corrosion after long-term use. The sleeve has a hollow tubular structure with a precision-machined inner wall to ensure a smooth and flat surface, providing stable guidance for the axial movement of the core measuring components and reducing frictional resistance during movement. It adopts a detachable design, connecting to the outer wall of the feeder via bolts, clips, and other convenient assembly methods. This allows for rapid installation and positioning, ensuring the stability of the measurement benchmark, and facilitates subsequent disassembly, inspection, maintenance, and replacement. Furthermore, the installation position can be flexibly adjusted according to the structural characteristics of different feeders, adapting to various production equipment scenarios. In addition, the connection point with the feeder can be equipped with a sealing component to prevent dust leakage or high-temperature gas overflow, ensuring a clean and safe operating environment for the device. As the core measuring component of the device, the measuring rod 2 is made of high-strength, rigid material, possessing excellent straightness and bending resistance. This ensures structural stability when penetrating the batch material layer, preventing deformation due to stress from affecting measurement accuracy. The front end is designed as a pointed structure 21, which effectively reduces the contact area with the batch material, lowering penetration resistance. Even when facing compacted batch material plates or granular batch materials, it can smoothly penetrate to the bottom of the material layer, ensuring the measuring contact point accurately reaches the material layer's reference surface. Considering the presence of hard particles such as quartz sand in the batch material, the pointed structure 21 can be made of wear-resistant materials such as diamond coating, ruby, or silicon nitride, effectively improving wear resistance, reducing wear during long-term use, preventing increased measurement errors due to probe wear, and preventing batch material particles from adhering to the surface of the pointed structure 21, ensuring measurement continuity and accuracy. The entire structure is slender and rod-shaped, inserted into the interior of the aforementioned sleeve 1, forming a precise fit with the inner wall of the sleeve 1. It can move freely along the axial direction while ensuring coaxiality during movement, avoiding deviation or shaking, and ensuring the straightness of the measurement trajectory. The motion conversion mechanism 3, as a key transmission structure connecting the measuring rod 2 and the reading mechanism 4, is composed of precision mechanical components such as connecting rods, gears 32, cams, or harmonic gears 32. Its specific form can be flexibly selected according to the measurement accuracy requirements and installation space. One end is fixedly connected to the measuring rod 2, and the other end is relatively fixed to the aforementioned sleeve 1. It can accurately convert the axial linear movement of the measuring rod 2 into a motion form that can be recognized by the reading mechanism 4. For example, it can convert linear displacement into the rotational motion of the gear 32, or transmit axial movement as the swinging motion of the pointer 41 through the connecting rod mechanism. Each transmission component is made of high-strength, low-wear material, and each connection part is precisely adjusted to ensure minimal clearance during transmission, avoiding transmission lag or stroke loss, and achieving precise synchronization between the displacement of the measuring rod 2 and the movement of the mechanism. In addition, a damping component or positioning structure can be equipped to keep the measuring rod 2 in its current position after measurement, facilitating reading and recording, while reducing the impact of external vibrations on transmission accuracy and improving the anti-interference capability of the device. The reading mechanism 4, serving as the measurement result output component of the device, is fixedly installed on the outer wall of the aforementioned sleeve 1. Its installation position allows operators to directly observe and read data without disassembling the device or approaching the high-temperature feeding port, improving operational convenience and safety. The core component features a clear material layer thickness scale. The scale markings are precisely calibrated and directly correspond to the displacement of the measuring rod 2, providing a clear display of the material layer thickness. The scale accuracy can be designed according to production process requirements to meet the measurement accuracy needs of different scenarios. It precisely coordinates with the aforementioned motion conversion mechanism 3. The motion output from the motion conversion mechanism 3 directly drives the indicator component (such as pointer 41, digital roller, or electronic display screen) of this component, converting the displacement of the measuring rod 2 into the corresponding thickness value in real time. Operators can quickly obtain the actual material layer thickness by observing the corresponding position of the indicator component on the scale. The outer shell adopts a dustproof and high-temperature resistant protective structure, protecting the internal transmission components and scale markings from external dust and high temperatures, ensuring clear and readable scales, extending the service life of the components, and guaranteeing reading accuracy during long-term use.

[0026] The material layer thickness measuring device 100 provided by this utility model solves the problems of measurement deviation and error expansion caused by material accumulation along the edge of the gate and aging of the gate transmission control structure when indirectly judging the material layer thickness through the gate opening scale of the feeding machine in the prior art. Specifically, the sleeve 1 is first detachably installed on the outer wall of the feeding machine to achieve a stable assembly of the device and facilitate subsequent disassembly and maintenance. During measurement, the measuring rod 2 is pushed to move axially along the sleeve 1. The pointed structure 21 at its front end can easily penetrate the material layer to the bottom of the material layer. During this process, the axial movement of the measuring rod 2 will drive the motion conversion mechanism 3 connected to it to produce a corresponding action. The reading mechanism 4, which cooperates with the motion conversion mechanism 3, will convert this action into a readable value. The operator can directly check the material layer thickness scale on the reading mechanism 4 exposed on the outside of the sleeve 1 to obtain the actual material layer thickness. The whole process bypasses the gate opening judgment method that is prone to problems and directly measures the material layer. Thus, the sleeve 1 is detachable, which can flexibly adapt to different specifications of feeding machines and facilitate the maintenance and replacement of the device itself; the pointed structure 21 of the measuring rod 2 allows it to smoothly penetrate the material layer, ensuring smooth measurement operation and accurate contact with the bottom of the material layer; the motion conversion mechanism 3 can accurately transmit the movement information of the measuring rod 2, and together with the graduated reading mechanism 4, it allows the staff to quickly and intuitively read the data, greatly improving the measurement accuracy and avoiding deviations caused by gate-related problems; at the same time, the overall structure can realize direct and timely measurement of the material layer thickness, ensuring the stability of the production process, and thus ensuring the uniformity and mechanical properties of the glass products.

[0027] In one embodiment, the material layer thickness measuring device 100 further includes an elastic element 5, which is located inside the sleeve 1, and its two ends are fixedly connected to the inner wall of the sleeve 1 and the outer wall of the measuring rod 2, respectively. During the axial movement of the measuring rod 2, the elastic element 5 can be compressed by the measuring rod 2 and undergo elastic deformation.

[0028] It should be noted that the elastic element 5, as an auxiliary reset and buffer component of the material layer thickness measuring device 100, is located inside the sleeve 1. Its overall shape can be designed as a helical spring, disc spring, or columnar elastomer, depending on the internal space of the sleeve 1 and the reset requirements. Among these, the helical spring is the preferred form due to its simple structure, stable elastic deformation, and strong adaptability. In terms of material, considering the possible slight high-temperature environment inside the sleeve 1 and the influence of batch material dust, the elastic element 5 is made of a metal material with good temperature resistance and fatigue resistance, such as steel wire or 60Si2Mn spring steel. This type of material can maintain stable elastic performance during long-term compression and reset cycles, avoiding elastic decay due to material aging. It also has a certain degree of corrosion resistance, which can reduce the erosion of the surface of the elastic element 5 by dust.

[0029] In terms of connection, the two ends of the elastic element 5 are fixedly connected to the inner wall of the sleeve 1 and the outer wall of the measuring rod 2, respectively. The specific connection method can be welding, snap-fit, or fixed with special connectors (such as spring seats) to ensure that the connection is firm and reliable and to prevent the elastic element 5 from falling off or shifting during deformation. When the measuring rod 2 moves along the axial direction of the sleeve 1 (such as advancing towards the material layer), the measuring rod 2 will exert a squeezing force on the elastic element 5, causing the elastic element 5 to undergo elastic deformation. At this time, the elastic element 5 will store the corresponding elastic potential energy. After the measurement is completed, the operator removes the external force on the measuring rod 2, and the elastic element 5 will release the stored elastic potential energy, generating a reverse thrust to push the measuring rod 2 back to the initial position along the axial direction of the sleeve 1. There is no need for the operator to manually pull the measuring rod 2 back to its original position, simplifying the operation process.

[0030] In this embodiment, after each measurement, the elastic element 5 can drive the measuring rod 2 to quickly return to its initial state, eliminating the need for manual reset and improving the efficiency of the measurement operation, which is especially suitable for production scenarios that require frequent measurements. When the measuring rod 2 pierces the material layer or is subjected to the reaction force of the material layer, the deformation of the elastic element 5 can absorb part of the impact force, preventing the measuring rod 2 from bending or being damaged due to excessive instantaneous force. At the same time, it reduces the impact on the motion conversion mechanism 3 and extends the service life of the entire device. In addition, the elastic element 5 can generate a continuous preload force on the measuring rod 2 during the measurement process, ensuring that the fit clearance between the measuring rod 2 and the inner wall of the sleeve 1 is always in a stable state, reducing the shaking or deviation of the measuring rod 2 during the movement, further ensuring the measurement accuracy, and avoiding reading deviations caused by the instability of the measuring rod 2.

[0031] In one embodiment, a first positioning protrusion 22 is formed at the end of the measuring rod 2 away from the pointed structure 21; The inner wall of the sleeve 1 is provided with a second positioning protrusion 11 on the side facing the first positioning protrusion 22; The two ends of the elastic element 5 are respectively fitted onto the first positioning protrusion 22 and the second positioning protrusion 11.

[0032] It should be noted that the first positioning protrusion 22 is formed at the end of the measuring rod 2 away from the pointed structure 21. It is integrally formed with the measuring rod 2 or fixedly connected by welding, threaded connection, or other methods to ensure the stability of the overall structure and prevent detachment during the movement of the measuring rod 2 and the action of the elastic element 5. In terms of shape, the first positioning protrusion 22 can be designed as an annular boss, a cylindrical protrusion, or a protrusion structure with a guide bevel. Among these, the annular boss is the preferred form because it can form a more uniform contact with the inner wall of the elastic element 5, reducing local stress concentration. Regarding the material, the first positioning protrusion 22 is made of the same material as the measuring rod 2, using a high-strength rigid material such as high-quality carbon structural steel or alloy structural steel. This type of material not only ensures that the first positioning protrusion 22 has sufficient load-bearing capacity to resist the force generated when the elastic element 5 deforms, but also forms a good mechanical synergy with the measuring rod 2, preventing breakage or damage to the connection part due to material differences. The second positioning protrusion 11 is located on the inner wall of the sleeve 1, facing the first positioning protrusion 22. Its connection to the sleeve 1 can be achieved through welding, integral casting, or bolt fixing, depending on the material of the sleeve 1 and the application scenario, to ensure the connection strength meets long-term usage requirements. In terms of shape, the second positioning protrusion 11 is adapted to the first positioning protrusion 22. If the first positioning protrusion 22 is an annular boss, the second positioning protrusion 11 can be designed as a corresponding annular boss or an annular groove; if the first positioning protrusion 22 is a cylindrical protrusion, the second positioning protrusion 11 can be designed as a boss with a circular hole, achieving precise fit with the elastic element 5 through shape adaptation. In terms of material selection, the second positioning protrusion 11 is made of the same material as the sleeve 1, using wear-resistant and high-temperature-resistant stainless steel, such as S30408 ​​or S31608, which can withstand the force of the elastic element 5 and resist possible dust corrosion inside the sleeve 1, preventing rust or deformation. In terms of assembly, the two ends of the elastic element 5 are respectively fitted onto the first positioning protrusion 22 and the second positioning protrusion 11. The inner wall of the elastic element 5 is tightly fitted with the outer wall of the positioning protrusion, forming a stable assembly structure. This fitting method can accurately position the two ends of the elastic element 5, clearly define the installation position of the elastic element 5 inside the sleeve 1, avoid lateral displacement or axial movement of the elastic element 5 during deformation, ensure that the elastic element 5 always deforms along the axial direction of the measuring rod 2, thereby ensuring the straightness of the movement of the measuring rod 2 and reducing measurement errors caused by the displacement of the elastic element 5. In this embodiment, the first positioning protrusion 22 and the second positioning protrusion 11 are used to position and constrain the two ends of the elastic element 5, which effectively prevents the elastic element 5 from shifting or moving during the compression and reset cycle, ensuring that the elastic element 5 is always in the preset working position, ensuring the stable performance of its elastic function, avoiding the shaking or jamming of the measuring rod 2 due to the shift of the elastic element 5, further improving the accuracy and stability of the material layer thickness measurement, and providing a more reliable measurement guarantee for the stability of the rolled glass production process.

[0033] In one embodiment, the elastic element 5 is a spring.

[0034] It should be noted that when the elastic element 5 is specifically a spring, a helical spring structure is selected. This structure has the characteristics of good deformation linearity and stable storage of elastic potential energy, which can adapt to the stroke requirements of the axial movement of the measuring rod 2. Moreover, the helical winding shape can achieve a longer deformation distance within the limited space inside the sleeve 1, avoiding the impact of space limitations on the elastic function. The wire diameter, pitch, and effective number of turns of the spring can be designed according to the reset force requirements of the measuring rod 2 and the internal space of the sleeve 1. For example, in scenarios requiring a larger reset force, a spring with a thicker wire diameter and fewer effective turns can be selected; when the space in the sleeve 1 is relatively compact, the axial dimension of the spring can be optimized by adjusting the pitch to ensure assembly compatibility.

[0035] In its engagement with the positioning protrusions, the two ends of the spring are respectively fitted onto the first positioning protrusion 22 and the second positioning protrusion 11. The inner diameter of the spring matches the outer diameter of the positioning protrusion, ensuring that the spring is not prone to loosening or shifting after being fitted. If the first positioning protrusion 22 and the second positioning protrusion 11 are annular protrusions, the number of coils at both ends of the spring can match the width of the protrusion, ensuring full contact between the spring end face and the protrusion end face and avoiding localized stress. If the positioning protrusion is a cylindrical protrusion, the two ends of the spring can be designed as tightly closed coils to enhance the fit with the protrusion and prevent the spring from sliding along the axial direction of the protrusion during deformation. This fitting method ensures that the deformation of the spring always proceeds along the axial direction of the measuring rod 2, ensuring that the direction of the spring's restoring force on the measuring rod 2 is stable and avoiding deviation of the restoring force due to spring offset, which would affect the movement accuracy of the measuring rod 2.

[0036] In one embodiment, the motion conversion mechanism 3 includes a rack 31 and a gear 32; the rack 31 is fixed to the outer wall of the measuring rod 2 along the length direction of the measuring rod 2, and the gear 32 is rotatably mounted on the inner wall of the sleeve 1; the rack 31 meshes with the gear 32, and when the measuring rod 2 moves axially relative to the sleeve 1, the rack 31 can drive the gear 32 to rotate around its own axis. The reading mechanism 4 includes a pointer 41 and a dial 42; one end of the pointer 41 is coaxially fixedly connected to the gear 32, and the pointer 41 can rotate synchronously with the gear 32; the dial 42 is fixed to the outer wall of the sleeve 1, and the material layer thickness scale is set on the side of the dial 42 facing the pointer 41, and the end of the pointer 41 away from the gear 32 points to the material layer thickness scale.

[0037] It should be noted that the scale value of the material layer thickness is calibrated according to the correspondence between the displacement of the measuring rod 2 and the rotation angle of the gear 32. For example, for every 1mm movement of the measuring rod 2, the gear 32 rotates 10°, and the scale value of the dial 42 increases by 1mm, ensuring that the scale value matches the actual material layer thickness accurately. At the same time, the surface of the dial 42 can be covered with a transparent protective film or a tempered glass cover to protect the scale from wear and dust contamination.

[0038] In this embodiment, the involute tooth meshing of the rack 31 and gear 32 enables smooth power transmission, reducing errors caused by transmission backlash. The coaxial fixation of the pointer 41 and gear 32 ensures synchronized rotation angles. Combined with the precisely calibrated dial 42, high-precision reading of the material layer thickness can be achieved, effectively solving the deviation problem of traditional gate opening measurement. Moreover, operators do not need complex calculations; they can directly obtain the material layer thickness by observing the indicated position of the pointer 41 on the dial 42. Furthermore, the dial 42 is fixed to the outer wall of the sleeve 1, providing a clear field of view and facilitating rapid reading, thus improving measurement efficiency. In one embodiment, a mounting base is fixed to the inner wall of the sleeve 1, and a rotating shaft is passed through the mounting base. The gear 32 is fixedly sleeved on the outer circumferential surface of the rotating shaft. The axis of the rotating shaft is perpendicular to the axis of the measuring rod 2, and both ends of the rotating shaft are rotatably connected to the mounting base.

[0039] It should be noted that the mounting base is fixed to the inner wall of the sleeve 1. The connection between the mounting base and the inner wall of the sleeve 1 can be achieved by welding, integral casting, or bolting. Integral casting can form a stable integral structure between the mounting base and the sleeve 1, preventing loosening after long-term stress. Welding is suitable for scenarios where the inner wall space of the sleeve 1 is limited, and the connection strength can be ensured by spot welding or full welding. Bolting facilitates the later disassembly and replacement of the mounting base. If the mounting base or gear 32 is damaged, maintenance can be performed without disassembling the entire sleeve 1. Structurally, the mounting base can be designed as two symmetrically distributed support blocks. Each of the two support blocks has a circular groove or bearing mounting hole on its opposite side to accommodate the two ends of the rotating shaft and ensure stable rotation of the shaft. Alternatively, it can be designed as a U-shaped bracket structure with the opening facing the measuring rod 2 to facilitate the meshing assembly of the gear 32 and the rack 31. The axis of the rotating shaft is perpendicular to the axis of the measuring rod 2. This design ensures that the tangent direction of the pitch circle of the gear 32 is consistent with the length direction of the rack 31 after installation, so that the axial movement of the rack 31 can be accurately converted into the rotational motion of the gear 32, avoiding increased meshing clearance or transmission jamming due to deviation of the axial angle. The two ends of the rotating shaft are rotatably connected to the mounting base, which can be achieved in two ways: First, a rolling bearing (such as a deep groove ball bearing) is embedded in the groove or mounting hole of the mounting base. The two ends of the rotating shaft are interference-fitted with the inner ring of the bearing, and the outer ring of the bearing is fixed to the mounting base. The rolling friction of the bearing reduces the rotational resistance of the rotating shaft. Second, if the rotational accuracy requirement is low and the load is small, a sliding bearing structure in which the rotating shaft and the mounting base directly cooperate can be used. In this case, the surface of the rotating shaft needs to be hardened to improve wear resistance, and grease can be applied to the inner wall of the mounting base mating hole to reduce the coefficient of sliding friction. Gear 32 is fixedly sleeved on the outer circumference of the rotating shaft. The fixing method can be a key connection (such as a flat key or semi-circular key), an interference fit, or a set screw. A key connection ensures circumferential fixation between gear 32 and the rotating shaft, guaranteeing synchronous rotation and preventing slippage of gear 32. An interference fit achieves a tight connection through dimensional interference between the rotating shaft and the inner hole of gear 32, suitable for applications requiring high transmission precision. A set screw fixation facilitates disassembly and position adjustment of gear 32, allowing for fine-tuning of the axial position of gear 32 on the rotating shaft based on the position of rack 31, ensuring precise meshing with rack 31. The coaxiality of gear 32 and the rotating shaft must be strictly controlled to prevent radial runout of gear 32 during rotation due to eccentricity, which would affect the meshing stability with rack 31. In this embodiment, the mounting base provides a stable support for the rotating shaft, preventing radial displacement of the shaft during the rotation of the gear 32. This ensures that the gear 32 and rack 31 maintain precise meshing at all times, reducing measurement errors caused by transmission backlash. Furthermore, the rotatable connection between the rotating shaft and the mounting base (especially when used with rolling bearings) significantly reduces rotational friction, making the process of the rack 31 driving the gear 32 to rotate smoother. This prevents the measuring rod 2 from jamming due to excessive friction, improving the convenience of measurement operations.

[0040] In one embodiment, the material layer thickness measuring device 100 further includes a baffle 6, which is disposed on the outer wall of the measuring rod 2 and close to the pointed structure 21. The outer diameter of the baffle 6 is larger than the inner diameter of the sleeve 1. During the axial movement of the measuring rod 2, the baffle 6 can abut against the end face of the sleeve 1.

[0041] It should be noted that the baffle 6 is located on the outer wall of the measuring rod 2, near the pointed structure 21. Its connection to the measuring rod 2 can be welding, integral molding, or threaded connection. Integral molding ensures the structural integrity of the baffle 6 and the measuring rod 2, preventing loosening or shifting during long-term use, and is particularly suitable for scenarios requiring high zero-point accuracy. Welded connections require uniform and firm welds to prevent the baffle 6 from falling off due to stress. Threaded connections facilitate fine-tuning of the baffle 6's position, allowing for zero-point calibration before fixing according to actual measurement needs. In terms of shape, the baffle 6 can be designed as circular, annular, or square. A circular baffle 6 is preferred because it forms uniform contact with the end face of the sleeve 1, preventing zero-point shift caused by localized stress. An annular baffle 6 reduces overall weight while maintaining contact area, minimizing additional resistance to the movement of the measuring rod 2. In this embodiment, when the measuring rod 2 is not in contact with the material layer (i.e., in the initial measurement state), the baffle 6 naturally abuts against the end face of the sleeve 1 facing the material layer, forming a clear initial positioning. When the measuring rod 2 is pushed towards the material layer, the baffle 6 moves synchronously with the measuring rod 2 and disengages from the end face of the sleeve 1 until the pointed structure 21 penetrates the bottom of the material layer. After the measurement is completed, the measuring rod 2 resets under the action of the elastic element 5, and the baffle 6 abuts against the end face of the sleeve 1 again, returning to the initial zero point position. In this way, the abutment between the baffle 6 and the end face of the sleeve 1 provides a unified initial reference for each measurement. No matter how many times the measuring rod 2 moves and resets, as long as the baffle 6 abuts against the end face of the sleeve 1, the measuring rod 2 is in the same zero point position, solving the error caused by reference offset in traditional measurements and ensuring the comparability and accuracy of each measurement result. Furthermore, operators do not need to frequently adjust the scale reference of the reading mechanism 4. They only need to confirm the fit between the baffle 6 and the end face of the sleeve 1 during device installation. In subsequent use, the baffle 6 can maintain zero-point stability by naturally resetting itself, reducing operational complexity and calibration frequency. In addition, the baffle 6 can limit the excessive movement of the measuring rod 2 towards the material layer, preventing damage to the pointed structure 21 at the front end of the measuring rod 2 or its insertion into the equipment below the material layer due to improper operation. At the same time, it prevents the measuring rod 2 from excessively retracting into the sleeve 1 during resetting, ensuring that the measuring rod 2 is always within the range of normal operation, further guaranteeing the long-term stable operation of the device.

[0042] In one embodiment, the measuring rod 2 is a heat-resistant rod; and / or, the sleeve 1 is a heat-resistant tube.

[0043] In this embodiment, when the measuring rod 2 is a heat-resistant rod, it is made of a high-temperature alloy material (such as 310S stainless steel, Inconel alloy, etc.). This type of material can withstand the high-temperature environment (usually up to 300-600℃) generated by the kiln radiation around the feeding machine, avoiding deformation, strength attenuation or surface oxidation of the measuring rod 2 under long-term high temperature, ensuring the straightness and puncture stability of the measuring rod 2, and not affecting the accurate measurement of the material layer thickness. When the sleeve 1 is a heat-resistant tube, it is also made of heat-resistant material (such as 316L stainless steel, heat-resistant cast iron, etc.) to resist the high temperature radiation outside the feeder and the corrosion of the batch material dust, prevent the sleeve 1 from deforming due to high temperature and causing abnormal fit between the inner wall and the measuring rod 2, ensure the smooth axial movement of the measuring rod 2, and at the same time avoid the aging of the sleeve 1 material from affecting the overall structural stability of the device. In one embodiment, the outer wall of the sleeve 1 is symmetrically provided with two elastic buckles. The elastic buckles include a support part fixedly connected to the sleeve 1 and a locking part protruding in the direction away from the axis of the sleeve 1. The locking part is provided with a guide slope on the side away from the support part. The outer wall of the feeding machine is provided with a corresponding slot adapted to the elastic buckle. The slot opening width is smaller than the maximum outer diameter of the locking part. The locking part can be locked into the slot through elastic deformation.

[0044] It should be noted that the elastic clips are symmetrically arranged on the outer wall of sleeve 1. This symmetrical distribution ensures balanced force distribution when sleeve 1 is connected to the feeding machine, avoiding installation misalignment caused by unilateral force and ensuring stable measurement reference. Each elastic clip consists of a support part and a locking part. The support part is fixedly connected to the outer wall of sleeve 1. The connection method can be integral injection molding (suitable for plastic clips) or welding / bolting (suitable for metal clips). Integral molding ensures the structural integrity of the support part and sleeve 1, improving the load-bearing capacity of the clip; welding or bolting facilitates individual replacement of damaged clips. The support part is generally sheet-like or columnar, possessing a certain elastic deformation capacity, providing deformation space for the locking and disengagement of the locking part.

[0045] The locking part protrudes away from the axis of sleeve 1, and its shape can be designed as hemispherical, wedge-shaped, or frustum-shaped. Among them, the hemispherical locking part has a smooth surface, which reduces resistance when locking and unlocking, and can reduce wear on the inner wall of the slot. The wedge-shaped locking part has a better anti-disengagement effect. After locking, the wedge-shaped surface and the inner wall of the slot form an engagement, which is not easy to fall off due to vibration. The side of the locking part away from the support part is provided with a guide slope. The guide slope is smoothly inclined. When installing sleeve 1, it can guide the locking part to slide smoothly into the slot. Through the guiding effect of the slope, the locking part naturally undergoes elastic deformation, and the initial positioning can be completed without applying excessive pressure. The slot on the outer wall of the feeder is adapted to the elastic buckle. The width of the slot opening is smaller than the maximum outer diameter of the locking part. This structural design is the key to achieving a stable engagement. When the locking part contacts the slot opening under the guidance of the guide slope, the slot opening will squeeze the locking part, causing the support part to undergo elastic deformation, which will drive the locking part to contract and smoothly enter the slot. After entering the slot, the support part elastically resets, and the locking part returns to its original shape. Because the maximum outer diameter of the locking part is larger than the width of the slot opening, the locking part is restricted in the slot, realizing a stable connection between the sleeve 1 and the feeder. When it is necessary to remove the sleeve 1, the support part of the elastic buckle is pried to the sides or the outside to make the locking part contract to a size smaller than the width of the slot opening, and the sleeve 1 can be removed from the feeder. In this embodiment, the snap-fit ​​connection of the elastic buckle does not require tools, and the installation and removal of the sleeve 1 can be completed manually by the operator. Compared with the traditional bolt connection, the operation efficiency is greatly improved, and it is especially convenient for the regular maintenance and replacement of the device. At the same time, the interference fit between the locking part and the slot can effectively prevent the sleeve 1 from loosening due to vibration or movement of the measuring rod 2 during use, ensuring that the measurement benchmark does not deviate. The deformation capability of the elastic buckle can also accommodate the small error of the slot size, reducing the installation difficulties caused by insufficient processing precision. The symmetrical design can also adapt to the installation requirements of different specifications of feeding machines, further improving the versatility of the device.

[0046] In one embodiment, two parallel strip slide rails are fixed to the outer side wall of the feeding machine in the vertical direction, and T-shaped grooves extending along the length direction are opened on the opposite side of the two slide rails. The outer wall of the sleeve 1 is provided with a T-shaped slider that is adapted to the T-shaped slide groove. The T-shaped slider can slide along the length of the T-shaped slide groove to realize the detachable connection between the sleeve 1 and the feeding machine. The top of the slide rail is provided with a limiting boss, and the top of the T-shaped slider is provided with a limiting groove that is adapted to the limiting boss. When the T-shaped slider slides to the point where the limiting boss and the limiting groove abut, the relative position of the sleeve 1 and the feeding machine is fixed. The bottom of the slide rail has an opening, and the T-shaped slider can slide into or out of the T-shaped groove from the opening.

[0047] It should be noted that the two strip-shaped slide rails on the outer wall of the feeding machine are fixed vertically and parallel to each other. This parallel arrangement ensures balanced force distribution on sleeve 1 after installation, preventing sleeve 1 from tilting due to slide rail misalignment and affecting the measurement benchmark. The slide rails can be fixed to the feeding machine by welding, bolting, or integral molding (if the outer wall of the feeding machine is made of metal). Bolting facilitates later maintenance and replacement of the slide rails, while welding improves connection strength and adapts to long-term vibration environments. The slide rail is generally elongated, with a T-shaped groove extending along its length on its opposite side. The cross-section of the T-shaped groove is "T"-shaped, consisting of a narrow opening and a wide bottom. This structure provides longitudinal constraint on the slider, preventing it from detaching from the side of the groove, while also providing stable guidance for the slider's movement. The outer wall of sleeve 1 is equipped with a T-shaped slider. The T-shaped slider and sleeve 1 can be connected by welding, integral casting, or high-strength bolts. Integral casting ensures the structural integrity of the slider and sleeve 1 and prevents the slider from loosening during sliding. Welding is suitable for scenarios where the materials of sleeve 1 and slider are different, ensuring a firm connection. The cross-section of the T-shaped slider is perfectly matched with the T-shaped groove. The "head" of the slider is embedded in the bottom of the wide groove, and the "neck" passes through the narrow opening of the groove and connects to sleeve 1. This matching method allows the slider to slide smoothly along the length of the groove while restricting the displacement of the slider in the direction perpendicular to the length of the groove, ensuring a stable sliding trajectory.

[0048] The top of the slide rail is equipped with a limiting boss, which is integrally formed or welded to the slide rail. The boss can be designed as a rectangular, arc-shaped, or beveled protrusion. The beveled protrusion guides the slider when it reaches the top, ensuring precise engagement of the limiting groove with the boss. The top of the T-shaped slider has a limiting groove that matches the limiting boss. The shape of the limiting groove complements the boss, ensuring a stable positioning relationship when they abut, preventing lateral movement or rotation of the slider at the top of the slide rail. When the T-shaped slider slides upwards along the T-shaped groove until the limiting boss and the limiting groove are fully engaged, the relative position of the sleeve 1 and the feeding machine is fixed. At this point, the sleeve 1 is in the preset measurement position and remains stable without additional fasteners. The bottom end of the slide rail has an opening, the size of which is slightly larger than the cross-sectional size of the T-shaped slider, ensuring that the T-shaped slider can smoothly slide into or out of the T-shaped groove from the opening. When installing sleeve 1, simply align the T-shaped slider with the bottom opening of the slide rail and push sleeve 1 vertically upward until the limiting boss abuts against the limiting groove to complete the installation; when disassembling, gently pry the slider outward or pull sleeve 1 vertically downward to allow the T-shaped slider to slide out from the bottom opening of the slide rail, thus separating sleeve 1 from the feeder. The operation does not require the use of tools. In this embodiment, the sleeve 1 and the feeding machine are detachably connected by the cooperation of the T-shaped groove and the T-shaped slider. The sliding installation and disassembly do not require tools, making the operation convenient and efficient. Compared with traditional bolt or snap-fit ​​connections, it is more suitable for scenarios that require frequent adjustment of the sleeve 1 position. The T-shaped groove and slider can provide stable guidance and constraint, preventing the sleeve 1 from shifting or falling off due to vibration during use, and ensuring the stability of the measurement reference. The limiting boss at the top of the slide rail cooperates with the limiting groove of the slider to quickly position the sleeve 1 to the preset measurement position, reducing the calibration time during installation and improving operating efficiency.

[0049] The above are merely exemplary embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the technical concept of this utility model and the contents of the specification and drawings of this utility model, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A material layer thickness measuring device, characterized in that, include: A sleeve, which is detachably mounted on the outer wall of the feeding machine; A measuring rod, the measuring rod having a pointed structure at its front end, the measuring rod passing through the sleeve and being movable along the axial direction of the sleeve; A motion conversion mechanism is connected to the measuring rod and the sleeve respectively, and the motion conversion mechanism can move with the axial movement of the measuring rod relative to the sleeve; A reading mechanism is provided on the sleeve and exposed on the outside of the sleeve. The reading mechanism cooperates with the motion conversion mechanism and is provided with a material layer thickness scale.

2. The material layer thickness measuring device as described in claim 1, characterized in that, The material layer thickness measuring device also includes an elastic element, which is located inside the sleeve, and its two ends are fixedly connected to the inner wall of the sleeve and the outer wall of the measuring rod, respectively. During the axial movement of the measuring rod, the elastic element can be compressed by the measuring rod and undergo elastic deformation.

3. The material layer thickness measuring device as described in claim 2, characterized in that, A first positioning protrusion is formed at the end of the measuring rod away from the pointed structure; The inner wall of the sleeve is provided with a second positioning protrusion on the side facing the first positioning protrusion; The two ends of the elastic element are respectively sleeved on the first positioning protrusion and the second positioning protrusion.

4. The material layer thickness measuring device as described in claim 2, characterized in that, The elastic element is a spring.

5. The material layer thickness measuring device as described in claim 1, characterized in that, The motion conversion mechanism includes a rack and a gear; the rack is fixed to the outer wall of the measuring rod along the length direction of the measuring rod, and the gear is rotatably mounted on the inner wall of the sleeve; the rack meshes with the gear, and when the measuring rod moves axially relative to the sleeve, the rack can drive the gear to rotate around its own axis; The reading mechanism includes a pointer and a dial; one end of the pointer is fixedly connected to the gear on the same axis, and the pointer can rotate synchronously with the gear. The dial is fixed to the outer wall of the sleeve, and the material layer thickness scale is located on the side of the dial facing the pointer. The end of the pointer away from the gear points to the material layer thickness scale.

6. The material layer thickness measuring device as described in claim 5, characterized in that, The inner wall of the sleeve is fixed with a mounting base, and a rotating shaft is passed through the mounting base. The gear is fixedly sleeved on the outer circumferential surface of the rotating shaft. The axis of the rotating shaft is perpendicular to the axis of the measuring rod, and both ends of the rotating shaft are rotatably connected to the mounting base.

7. The material layer thickness measuring device according to any one of claims 1 to 6, characterized in that, The material layer thickness measuring device further includes a baffle, which is disposed on the outer wall of the measuring rod and close to the pointed structure, and the outer diameter of the baffle is larger than the inner diameter of the sleeve; During the axial movement of the measuring rod, the baffle can abut against the end face of the sleeve.

8. The material layer thickness measuring device according to any one of claims 1 to 6, characterized in that, The measuring rod is a heat-resistant rod; and / or the sleeve is a heat-resistant tube.

9. The material layer thickness measuring device according to any one of claims 1 to 6, characterized in that, The outer wall of the sleeve is symmetrically provided with two elastic buckles. Each elastic buckle includes a support part fixedly connected to the sleeve and a locking part protruding in a direction away from the axis of the sleeve. The locking part is provided with a guide slope on the side away from the support part. The outer wall of the feeding machine is provided with a corresponding slot adapted to the elastic buckle. The slot opening width is smaller than the maximum outer diameter of the locking part. The locking part can be locked into the slot through elastic deformation.

10. The material layer thickness measuring device according to any one of claims 1 to 6, characterized in that, The outer wall of the feeding machine is fixed with two parallel strip slide rails in the vertical direction, and T-shaped grooves extending along the length direction are opened on the opposite side of the two slide rails. The outer wall of the sleeve is provided with a T-shaped slider that is adapted to the T-shaped groove. The T-shaped slider can slide along the length of the T-shaped groove to realize the detachable connection between the sleeve and the feeding machine. The top of the slide rail is provided with a limiting boss, and the top of the T-shaped slider is provided with a limiting groove that is adapted to the limiting boss. When the T-shaped slider slides to the point where the limiting boss abuts against the limiting groove, the relative position of the sleeve and the feeding machine is fixed. The slide rail has an opening at its bottom end, and the T-shaped slider can slide into or out of the T-shaped groove from the opening.

Images