Constant-angle pressure-regulating type water tank R-angle grinding production line and grinding equipment

Abstract

The invention discloses a constant-angle pressure-regulating type water tank R-angle grinding production line and grinding equipment, and relates to the technical field of water tank grinding. The polishing equipment comprises a product placing device, a polishing device, a floating device and a pressure device. The grinding device comprises a supporting assembly and a grinding assembly connected to the supporting assembly. And the grinding device is provided with a grinding end part for grinding the inner R angle. The floating device is connected with the grinding device and is configured to move the grinding end part under the condition that the angle of the grinding end part is not changed. The pressure device is connected to the floating device to drive the polishing end to move. The pressure device is configured to adjust the pressure between the polishing end and the R angle. The pressure device comprises an oil cylinder / air cylinder and a proportional valve connected to the oil cylinder / air cylinder. According to the polishing production line and the polishing equipment, through highly-automatic integrated design, the polishing efficiency and the quality consistency are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of water tank polishing technology, and more specifically, to a constant angle pressure-adjustable water tank R-angle polishing production line and polishing equipment. Background Technology

[0002] After stainless steel sinks are welded, their inner edges and corners require rough and fine grinding to achieve a smooth surface and eliminate weld seams. Due to the large size and light weight of the sinks, and the need for consistent processing of all four inner corners, traditional manual grinding methods are inefficient, labor-intensive, and prone to quality fluctuations. Therefore, there is a clear industry demand for a complete automated system that can automatically feed, rotate, perform continuous multi-stage grinding, and integrate dust collection.

[0003] Currently, some grinding equipment attempts to achieve partial automation through robotic arms or specialized machines, but these solutions often lack a systematic approach. For example, the equipment may only perform grinding at a single station, without integrating automatic workpiece positioning, multi-angle flipping, and inter-station transfer functions, resulting in a discontinuous production process and limited automation. Furthermore, even with automated grinding units, existing technologies typically rely on preset fixed parameters to control the position or pressure of the grinding head, without considering the continuous wear effect of the abrasive belt as a consumable. The abrasive belt gradually decreases in thickness during operation, directly causing changes in the grinding radius, which the equipment cannot detect and adjust in real time.

[0004] Therefore, existing technologies face a double deficiency: First, the lack of a complete automated production line specifically designed for grinding the inner corners of stainless steel sinks means that workpiece handling, flipping, and the connection of multiple processes still require significant manual intervention, hindering overall efficiency. Second, in the limited automated grinding units, the absence of a belt wear compensation mechanism prevents the grinding process parameters from being adaptively adjusted, leading to a gradual deterioration in grinding quality as the operation time increases. These two problems together result in poor stability of the grinding process, making it difficult to guarantee product consistency and failing to meet the high stability and high quality requirements of modern mass production. Summary of the Invention

[0005] The present invention provides a constant angle pressure regulating water tank R-angle grinding production line and grinding equipment, which aims to improve at least one of the above-mentioned technical problems.

[0006] To solve the above-mentioned technical problems, the present invention provides a constant angle pressure regulating water tank R-angle grinding equipment, which includes a product placement device, a grinding device, a floating device and a pressure device.

[0007] The product placement device is suitable for placing a water tank. The grinding device includes a support assembly and a grinding component engaged with the support assembly. The grinding device is provided with a grinding end for grinding an inner radius (R-angle). A floating device is engaged with the grinding device and configured to move the grinding end while maintaining its angle. A pressure device is engaged with the floating device to drive the movement of the grinding end. The pressure device is configured to adjust the pressure between the grinding end and the R-angle. Preferably, the pressure device includes a hydraulic cylinder / pneumatic cylinder and a proportional valve engaged with the hydraulic cylinder / pneumatic cylinder.

[0008] As a further optimization, the pressure control method of the pressure device is as follows.

[0009] Obtain the belt speed and grinding contact time, calculate the cumulative grinding distance, and obtain the wear amount from the cumulative grinding distance.

[0010] .

[0011] .

[0012] In the formula This is the cumulative polishing distance. This represents the cumulative number of polishing stages. For the first The linear speed of the abrasive belt during segment grinding. For the first The contact duration between the abrasive belt and the radius (R-angle) inside the water tank during segment grinding; This represents the amount of wear. This indicates an operation that takes the smaller value. This indicates an operation that takes the larger value. This represents the allowable cumulative grinding distance corresponding to the lifespan of the abrasive belt.

[0013] The proportional valve input is calculated based on the wear amount and the pressure setpoint to control the output pressure of the hydraulic / pneumatic cylinder to compensate for the grinding pressure.

[0014] .

[0015] .

[0016] .

[0017] In the formula This is the pressure setting value after compensation. This is the reference pressure for a new sand belt or under reference conditions. This is the wear sensitivity coefficient. This is the pressure command value after the amplitude is limited. The minimum allowable pressure. The maximum allowable pressure. Input control quantity to the electro-proportional valve. This is the lower limit of the proportional valve input. This is the upper limit of the proportional valve input.

[0018] As a further optimization, the floating device includes a fixed member, a movable member parallel to the fixed member, and two connecting members engaged between the fixed member and the movable member to form a parallel linkage mechanism.

[0019] The support component engages with the movable member and is able to move with the movable member while maintaining a constant angle.

[0020] As a further optimization, the floating device and the movable part of the grinding device are integrated, with the center of gravity located on the side of the fixed member away from the movable member.

[0021] The pressure device is located on the side of the fixed member away from the moving member and is connected to the moving member in a transmission manner to drive the moving member to translate in a direction parallel to the fixed member, thereby causing the grinding end of the grinding device to move in contact with the R angle inside the water tank.

[0022] As a further optimization, the support assembly includes a support member, a contour wheel engaged with the support member, a first guide wheel, and two second guide wheels. The rotation axes of the contour wheel and the first guide wheel are parallel. The rotation axes of the first guide wheel and the second guide wheels are perpendicular.

[0023] The grinding assembly includes a pulley, a first motor engaged with the pulley, and an abrasive belt engaged with the contour wheel, a first guide wheel, a second guide wheel, and the pulley. The rotation axes of the second guide wheel and the pulley are perpendicular, such that at least a portion of the abrasive belt is configured in an L-shape.

[0024] As a further optimization, the contour wheel is designed to be detachable to accommodate grinding of different R-angle sizes.

[0025] The pulley is slidably engaged with the floating device. The grinding device also includes a tensioning assembly engaged with the grinding assembly and the floating device for adjusting the tension of the sanding belt.

[0026] The grinding device also includes a cooling component connected to the floating device for outputting cooling liquid or cooling gas.

[0027] As a further optimization, the product placement device includes a V-shaped positioning stage, and a first vacuum suction cup and a proximity switch engaged with the V-shaped positioning stage for detecting and fixing the workpiece.

[0028] The product placement device further includes a first telescopic member and a first clamping member engaged with the first telescopic member. The clamping member is used to clamp the water tank onto the V-shaped positioning platform.

[0029] The polishing equipment also includes a first moving device and a dust removal system. The first moving device is used to drive the floating device closer to the product placement device. The dust removal system is attached to the bottom of the polishing device and is equipped with a dust collection hopper for collecting polishing dust.

[0030] This application also provides a constant-angle, pressure-adjustable water tank R-angle grinding production line, which includes at least two constant-angle, pressure-adjustable water tank R-angle grinding machines as described in any paragraph of the first aspect. The grinding machines are used for continuous processing of rough grinding and fine grinding of the water tank.

[0031] As a further optimization, the number of grinding machines is three. One machine is used for rough grinding of the four rounded corners of the water tank. The other two machines are used for fine grinding of the two rounded corners of the water tank, respectively, to match the production cycle.

[0032] As a further optimization, the grinding production line also includes a water tank moving device. The water tank moving device includes an X-axis moving assembly, a Y-axis moving assembly, a Z-axis moving assembly, and a first rotary cylinder and a second vacuum suction cup engaged with the Z-axis moving assembly for transporting and rotating the workpiece.

[0033] The X-axis and Z-axis moving components use enclosed linear guide rail modules. The Y-axis moving component uses a servo motor, reducer, rack and pinion gears, and guide rails for transmission, and is equipped with an accordion dust cover, soft limit and hard limit protection.

[0034] As a further optimization, the grinding production line also includes a feeding device and a discharging device.

[0035] The feeding device includes a walking component adapted to move along a preset path, a rotating flipping component engaged with the walking component, and a second rotary cylinder and a third vacuum suction cup engaged with the flipping component, for transporting the water tank to the discharging device.

[0036] The discharge device includes a belt conveyor line, and a material detection sensor and a material arrival sensor installed on the belt conveyor line.

[0037] By adopting the above technical solution, the present invention can achieve the following technical effects: The constant-angle pressure-regulating water tank R-angle grinding production line and grinding equipment provided by this invention significantly improves grinding efficiency and quality consistency through a highly automated integrated design. Specifically, the floating device adopts a parallel linkage mechanism, which can move flexibly while maintaining the grinding end angle. Combined with the pressure device, the grinding pressure is adjusted in real time via an electric proportional valve, ensuring the stability and accuracy of the grinding process and effectively avoiding quality fluctuations caused by manual operation. Meanwhile, the replaceable contour wheel design allows for quick adaptation to different sizes of water tank R-angles, enhancing the equipment's versatility and adaptability.

[0038] The coordinated layout of multiple grinding machines on the production line optimizes the production cycle and increases overall capacity through continuous rough and fine grinding. The integrated dust collection system effectively collects grinding dust, improving the working environment. A center-of-gravity adjustment mechanism, such as adding a counterweight to the motor end, directly applies the center of gravity near the floating cylinder, further stabilizing the grinding pressure and enhancing the reliability and lifespan of the equipment. Attached Figure Description

[0039] To more clearly illustrate the technical solutions of the specific embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0040] Figure 1 It is an isometric view from the first perspective of the grinding production line.

[0041] Figure 2 This is an isometric view from the second perspective of the grinding production line.

[0042] Figure 3 It is a third-person isometric view of the grinding production line.

[0043] Figure 4 This is an isometric drawing of the water tank moving device.

[0044] Figure 5 It is an isometric view of the grinding equipment from a first-person perspective.

[0045] Figure 6 It is an isometric view of the grinding equipment from a second perspective.

[0046] Figure 7 It is a third-person isometric view of the grinding equipment.

[0047] Figure 8 It is an isometric drawing of the product placement device.

[0048] Figure 9It is an isometric view of the feeding device from a first-person perspective.

[0049] Figure 10 This is an isometric view of the feeding device from a second perspective.

[0050] In the diagram, the markings are: 1-Discharge device, 2-Product placement device, 3-Floating device, 4-Pressure device, 5-Grinding device, 6-Unloading device, 7-Water tank moving device, 8-Y-axis moving assembly, 9-X-axis moving assembly, 10-Z-axis moving assembly, 11-Second vacuum suction cup, 12-First rotary cylinder, 13-Dust removal system, 14-First moving device, 15-Moving component, 16-Connecting component, 17-Fixing component, 18-Supporting assembly, 19-... - Cooling assembly, 20- Contouring wheel, 21- First guide wheel, 22- Support component, 23- Second guide wheel, 24- Tensioning assembly, 25- Grinding assembly, 26- Pulley, 27- Sanding belt, 28- First motor, 29- First telescopic component, 30- First clamping component, 31- Proximity switch, 32- First vacuum suction cup, 33- V-shaped positioning stage, 34- Tilting assembly, 35- Traveling assembly, 36- Second rotary cylinder, 37- Third vacuum suction cup. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0052] Example 1: Traditional grinding of the inner radius (R) of stainless steel water tanks after welding is inefficient, labor-intensive, and difficult to maintain consistent processing quality due to reliance on manual hand tools. Furthermore, the metal dust generated during grinding poses a threat to the working environment and worker health. The randomness of manual operation leads to large fluctuations in grinding quality and inaccurate control over the shape and surface finish of the inner radius. Manual handling and flipping of workpieces increases auxiliary time and limits overall production efficiency. Existing technologies lack a complete system solution integrating automatic workpiece positioning, multi-angle flipping, multi-process continuous grinding, and dust collection, making it difficult to meet the demands of modern mass production for automation, high quality, and high stability.

[0053] Depend on Figures 5 to 7 As shown, this embodiment of the invention provides a constant angle pressure regulating water tank R-angle grinding device, which includes a product placement device 2, a grinding device 5, a floating device 3 and a pressure device 4.

[0054] Product placement device 2 is suitable for placing a water tank. Grinding device 5 includes a support assembly 18 and a grinding assembly 25 engaged with the support assembly 18. The grinding device 5 is provided with a grinding end for grinding an inner radius (R-angle). A floating device 3 is engaged with the grinding device 5 and configured to move the grinding end while maintaining its angle. A pressure device 4 is engaged with the floating device 3 to drive the grinding end to move. The pressure device 4 is configured to adjust the pressure between the grinding end and the R-angle. Preferably, the pressure device 4 includes a hydraulic cylinder / pneumatic cylinder and a proportional valve engaged with the hydraulic cylinder / pneumatic cylinder.

[0055] The product placement device 2 provides a platform for holding the workpiece to be polished in the water tank. This device is typically positioned within the working area of ​​the polishing equipment to ensure the water tank is positioned and fixed during polishing. The polishing device 5 performs the R-angle polishing operation within the water tank. This device typically includes a support assembly 18 for supporting the polishing tools and a polishing assembly 25 for actually performing the polishing operation. The floating device 3 connects to the polishing device 5 and allows the polishing end to move within a certain range while maintaining its own angle. This device can compensate for minor positioning errors of the workpiece or equipment, ensuring that the polishing end fits snugly against the R-angle surface of the water tank.

[0056] The constant angle pressure regulating water tank R-angle grinding equipment of this application realizes the support of the water tank through the product placement device 2, the grinding device 5 processes the inner R-angle, the floating device 3 ensures that the grinding end maintains the angle during movement, and the pressure device 4 adjusts the grinding force, effectively overcoming the problems of low efficiency, uneven quality, high labor intensity and dust pollution of traditional manual grinding.

[0057] During the grinding of the inner radius (R) corner of the water tank, a gap will form between the abrasive belt 27 and the inner R corner as the belt wears down. The solution of this invention allows for the translation of the grinding end to maintain its contact with the inner R corner of the water tank when this gap occurs. By keeping the grinding angle constant and adjusting the pressure, efficient and precise grinding of the inner R corner is achieved, solving the problem of quality fluctuations in automated grinding. This invention offers advantages such as automated grinding of the inner R corner of the water tank, improved production efficiency, consistent grinding quality, and reduced manual labor intensity. This equipment enables the automation and standardization of grinding the inner R corner of the water tank, improving the consistency of processing quality and production efficiency, while also improving the working environment.

[0058] Based on the above embodiments, in an optional embodiment of the present invention, the pressure control method of the constant angle pressure-adjustable water tank R-angle grinding equipment is one of its core innovations. It aims to compensate for the wear of the abrasive belt 27 in real time through intelligent algorithms, ensuring the stability and consistency of the grinding pressure. This method, based on data acquisition and mathematical modeling, achieves automated adjustment and effectively solves the quality fluctuation problem caused by the wear of the abrasive belt 27 in traditional grinding. The pressure control method of the pressure device 4 includes S1 and S2.

[0059] S1. Obtain the belt speed and grinding contact time, calculate the cumulative grinding distance, and obtain the wear amount from the cumulative grinding distance.

[0060] .

[0061] .

[0062] In the formula This is the cumulative polishing distance. This represents the cumulative number of polishing stages. For the first The linear speed of the abrasive belt during segment grinding. For the first The contact duration between the abrasive belt and the radius (R-angle) inside the water tank during segment grinding; The wear amount (wear degree) has a range of values. This indicates an operation that takes the smaller value. This indicates an operation that takes the larger value. This represents the allowable cumulative grinding distance corresponding to the lifespan of the abrasive belt.

[0063] Specifically, the pressure control method begins with real-time monitoring of the abrasive belt's operating status. The system first acquires the abrasive belt's linear velocity and grinding contact time; this data is collected by sensors and used to calculate the cumulative grinding distance. The cumulative grinding distance reflects the total amount of grinding by the abrasive belt, and its calculation formula is based on the sum of the products of the abrasive belt's linear velocity and contact time. The wear amount is obtained by comparing the cumulative grinding distance with the abrasive belt's allowable lifespan and normalizing it to a value between 0 and 1 to quantify the degree of wear. This step ensures that the system can sense the abrasive belt's condition, replacing manual inspection and providing an accurate data basis for subsequent pressure compensation.

[0064] S2. Calculate the proportional valve input based on the wear amount and the pressure setpoint to control the output pressure of the hydraulic / pneumatic cylinder to compensate for the grinding pressure. Preferably, the proportional valve is an electro-proportional valve.

[0065] .

[0066] .

[0067] .

[0068] In the formula This is the pressure setting value after compensation. This is the reference pressure for a new sand belt or under reference conditions. This is the wear sensitivity coefficient. This is the pressure command value after the amplitude is limited. The minimum allowable pressure. The maximum allowable pressure. Input control quantity to the electro-proportional valve. This is the lower limit of the proportional valve input. This is the upper limit of the proportional valve input.

[0069] Based on the wear amount, the system further calculates the pressure setpoint and proportional valve input to achieve dynamic pressure regulation. The compensated pressure setpoint is derived from the reference pressure and wear sensitivity coefficient, aiming to offset the pressure loss caused by wear. Subsequently, the pressure setpoint undergoes amplitude limiting to ensure it remains within a safe range and avoids equipment overload. Finally, the proportional valve input control quantity is linearly mapped according to the pressure command to drive the hydraulic or pneumatic cylinder to adjust the output pressure.

[0070] This method achieves closed-loop control through an electro-proportional valve, ensuring optimal pressure at the grinding end and thus improving grinding accuracy and efficiency. The pressure device 4 works in conjunction with the floating device 3. For example, the floating device 3 employs a parallel linkage mechanism to ensure a constant grinding angle, while pressure regulation is optimized in real time through the proportional valve.

[0071] Based on the above embodiments, in an optional embodiment of the present invention, such as... Figure 6 As shown, the floating device 3 includes a fixed member 17, a movable member 15 parallel to the fixed member 17, and two connecting members 16 engaged between the fixed member 17 and the movable member 15 to form a parallel linkage mechanism. The support assembly 18 is engaged with the movable member 15 and is capable of moving with the movable member 15 while maintaining a constant angle.

[0072] The fixed member 17 is the reference part of the floating device 3, and is usually firmly mounted on the first moving device 14, providing a stable support point for the entire floating mechanism. The moving member 15 is the part of the floating device 3 that can translate relative to the fixed member 17, and the support assembly 18 of the grinding device 5 is directly mounted on the moving member 15. The two connecting members 16 are the linkages connecting the fixed member 17 and the moving member 15. They are usually of the same length and remain parallel to each other. By hinged to the fixed member 17 and the moving member 15 respectively, a parallelogram structure, i.e., a parallel linkage mechanism, is formed. The geometric characteristics of this mechanism ensure that when the moving member 15 translates under the guidance of the fixed member 17, any object mounted on the moving member 15 (such as the support assembly 18) will maintain its original posture and angle, without rotation or tilting. Therefore, the support assembly 18 can move with the moving member 15 while maintaining a constant angle, thereby ensuring that the grinding end always contacts the inner R-angle of the water tank at a preset angle throughout the grinding process.

[0073] The floating device 3, through the introduction of a parallel linkage mechanism, ensures that the angle of the grinding end remains constant as it moves to follow the R-angle contour within the water tank. Using the fixed member 17 as a reference, two parallel moving members 15 connect the support assembly 18 to the moving members 15, forming a stable quadrilateral structure. When the pressure device 4 drives the grinding end to adapt to the R-angle curved surface, the parallel linkage mechanism locks the attitude of the grinding end, preventing tilting or rotation, thus avoiding changes in the grinding angle. This significantly improves the uniformity and consistency of grinding, effectively preventing localized over-grinding or under-grinding due to angle deviations, thereby improving the surface quality of the R-angle within the water tank and the product yield.

[0074] This application proposes a constant-angle pressure-adjustable water tank R-angle grinding device, wherein the floating device 3 maintains the angle of the grinding end constant through a parallel linkage mechanism, and the pressure device 4 drives the grinding end to move to adjust the pressure between the grinding end and the R-angle. However, in the actual grinding process, the overall center of gravity position of the floating device 3 and the movable part of the grinding device 5, as well as the connection method of the pressure device 4, will affect the smoothness of the movement of the grinding end and the accuracy of pressure adjustment, resulting in unstable grinding effect or difficulty in achieving fine control.

[0075] Based on the above embodiments, in an optional embodiment of the present invention, such as... Figure 6 and Figure 7As shown, the movable parts of the floating device 3 and the grinding device 5 are integrated, with their center of gravity located on the side of the fixed member 17 away from the moving member 15. The pressure device 4 is located on the side of the fixed member 17 away from the moving member 15 and is connected to the moving member 15 for transmission, so as to drive the moving member 15 to translate in a direction parallel to the fixed member, thereby driving the grinding end of the grinding device to move in contact with the R-angle inside the water tank. Preferably, the floating device 3 is also provided with a counterweight, which is C-shaped and fitted onto the pulley 26, i.e., located near the first motor 28, to adjust the center of gravity position and stabilize the grinding pressure.

[0076] The movable part of the floating device 3 mainly refers to the moving part 15 and the connecting part 16 in the parallel linkage mechanism, while the movable part of the grinding device 5 includes the support assembly 18 engaged with the moving part 15 and the grinding assembly 25 thereon. By strategically configuring the center of gravity of this whole on the side of the fixed part 17 away from the moving part 15, a preset torque can be formed, which helps to provide additional stability or preload force during the movement of the grinding end.

[0077] For example, by adding counterweights at appropriate locations or optimizing the material selection and structural design of each component, the overall mass distribution can be biased towards that side. This allows the grinding end to maintain its preset posture and contact pressure more stably during grinding, even when subjected to external disturbances. This center-of-gravity configuration helps reduce the burden on the pressure device 4 in maintaining balance, allowing it to focus more on precisely adjusting the grinding pressure.

[0078] Meanwhile, the pressure device 4 can take the form of a cylinder, hydraulic cylinder, servo motor-driven screw mechanism, or electromagnetic actuator. Preferably, the pressure device 4 includes a cylinder and an electro-proportional valve, the electro-proportional valve being configured to automatically compensate for pressure based on the number of grinding cycles. Its installation position is coordinated with the overall center of gravity, allowing the pressure device 4 to act on the moving part 15 in a more direct and efficient manner. For example, when using a cylinder, the cylinder body can be fixed on the side of the fixed part 17 away from the moving part 15, and its piston rod is connected to the moving part 15 via a connecting rod or rocker arm mechanism. By controlling the extension and retraction of the cylinder, the moving part 15 can be driven to rotate around its pivot point, thereby driving the support assembly 18 and the grinding assembly 25 to move along the trajectory of the parallel linkage mechanism, realizing contact and pressure adjustment between the grinding end and the R-angle in the water tank. This layout optimizes the force transmission path, reduces transmission loss and mechanism deformation, thereby improving the response speed and accuracy of pressure adjustment.

[0079] By positioning the center of gravity of the floating device 3 and the movable parts of the grinding device 5 on the side of the fixed member 17 away from the moving member 15, a stable mechanical foundation is provided for the entire grinding mechanism, effectively suppressing vibrations and swaying that may occur during the grinding process. Simultaneously, the pressure device 4 is strategically placed on the same side and connected to the moving member 15 via a transmission mechanism, allowing the pressure device 4 to drive the moving member 15 to rotate with the optimal lever arm and direction of action. This achieves precise and stable control over the movement trajectory and contact pressure of the grinding end. This collaborative design significantly improves the stability and pressure consistency of the grinding end when it contacts the radius (R-angle) within the water tank, avoiding uneven grinding or low efficiency caused by an unstable center of gravity or poor force transmission path. Ultimately, it ensures the uniformity and consistency of the grinding quality of the radius (R-angle) within the water tank and extends the service life of the equipment.

[0080] In actual sanding processes, water tanks vary in size. Traditional 25mm sanding components are too large to fit various tank sizes. This makes it difficult to precisely fit and efficiently and evenly complete the sanding operation. It easily leads to incomplete sanding or localized over-sanding, affecting both sanding quality and efficiency.

[0081] Based on the above embodiments, in an optional embodiment of the present invention, such as... Figure 7 As shown, the support assembly 18 includes a support member 22, a contour wheel 20 engaged with the support member 22, a first guide wheel 21, and two second guide wheels 23. The rotation axes of the contour wheel 20 and the first guide wheel 21 are parallel. The rotation axes of the first guide wheel 21 and the second guide wheels 23 are perpendicular. Figure 7 As shown, the grinding assembly 25 includes a pulley 26, a first motor 28 engaged with the pulley 26, and an abrasive belt 27 engaged with the contour wheel 20, the first guide wheel 21, the second guide wheel 23, and the pulley 26. The rotation axes of the second guide wheel 23 and the pulley 26 are perpendicular, such that at least a portion of the abrasive belt 27 is configured in an L-shape.

[0082] The support component 22 is the basic structure of the support assembly 18. Its function is to provide a stable mounting base and structural support for the contour wheel 20, the first guide wheel 21, and the second guide wheel 23, ensuring that these components can be accurately positioned and operated during the grinding process. The support component 22 can be made of high-strength, high-rigidity materials, such as metal alloys, to resist the forces and vibrations generated during the grinding process.

[0083] The contour wheel 20 is a key component in the grinding assembly 25, designed to precisely follow the contour of the radius (R) within the water tank. The contour wheel 20 typically has an arc or shape that matches the radius to be ground, and when it contacts the radius surface, it guides the sanding belt 27 along the curve of the radius, ensuring that the sanding belt 27 maintains a tight and uniform contact with the radius surface at all times.

[0084] Preferably, the contour wheel 20 is a roller shaft adapted to the radius (R) of the water tank. It is made of wear-resistant material, such as polymer material or hard rubber, to reduce wear and provide a certain degree of elasticity, thereby better adapting to the minute changes in the radius surface.

[0085] The first guide wheel 21 and the second guide wheel 23 work together to guide the running path of the sanding belt 27. The rotation axis of the first guide wheel 21 is parallel to the rotation axis of the contour wheel 20, which helps maintain the stability and directionality of the sanding belt 27 within its running plane. The rotation axes of the two second guide wheels 23 are perpendicular to the rotation axis of the first guide wheel 21; this perpendicular arrangement is key to forming the L-shaped structure of the sanding belt 27. With this layout, the running direction of the sanding belt 27 deflects by 90 degrees when it passes the second guide wheels 23, thus forming an L-shaped structure with one part perpendicular to the other. This significantly reduces the volume of the support assembly 18, allowing the grinding equipment to be adapted to smaller water tanks.

[0086] The pulley 26 in the grinding assembly 25 rotates under the drive of the first motor 28, providing power to the abrasive belt 27. The first motor 28 can be a servo motor or a stepper motor. By precisely controlling its speed, the running speed of the abrasive belt 27 can be adjusted to adapt to different grinding needs and material properties. The abrasive belt 27, as the actual grinding medium, is coated with abrasive. Through high-speed motion, it contacts the R-angle surface within the water tank, achieving material removal and improving surface finish. The material and grit size of the abrasive belt 27 can be selected according to the needs of coarse or fine grinding.

[0087] Through the coordinated design of the support assembly 18 and the grinding assembly 25, particularly the specific layout of the contour wheel 20, the first guide wheel 21, and the second guide wheel 23, the sanding belt 27 can be shaped into a unique L-shaped structure. This L-shaped sanding belt 27 can simultaneously or sequentially contact two adjacent surfaces formed by the radius (R) corner within the water tank, thereby achieving comprehensive and uniform grinding of the entire R-corner area. Furthermore, the L-shaped structure can be adapted to smaller water tanks, greatly improving the versatility of the grinding equipment.

[0088] The introduction of the contour wheel 20 ensures that the sanding belt 27 can accurately grind along the R-angle contour, avoiding the problem of traditional sanding tools being unable to conform to complex curved surfaces, and effectively preventing local over-grinding or under-grinding. This design significantly improves the efficiency and quality of sanding, ensuring the smoothness and consistency of the R-angle within the water tank, thereby solving the accuracy and efficiency problems of traditional sanding methods when dealing with complex internal R-angles. In practical applications, the radius (R) of the water tank may vary, making it difficult for grinding equipment to adapt to various tank sizes and limiting its versatility. Furthermore, the abrasive belt 27 is prone to loosening due to wear or thermal expansion and contraction after prolonged use, affecting the grinding effect and the lifespan of the belt 27. In addition, the frictional heat generated during grinding can also damage the surface quality of the workpiece and the abrasive belt 27 itself.

[0089] Based on the above embodiments, in an optional embodiment of the present invention, such as... Figure 6 and Figure 7 As shown, the contour wheel 20 is detachable to accommodate grinding with different radius angles. The pulley 26 is slidably engaged with the floating device 3. The grinding device 5 also includes a tensioning assembly 24 engaged with the grinding assembly 25 and the floating device 3 to adjust the tension of the sanding belt 27. The grinding device 5 also includes a cooling assembly 19 engaged with the floating device 3 to output cooling liquid or cooling gas.

[0090] Specifically, the contour wheel 20 is a key component that directly contacts the radius (R) corner inside the sander and guides the sanding belt 27. To accommodate different R-corner sizes, the contour wheel 20 is designed as a detachable structure. The contour wheel 20 can be mounted on the support 22 via a threaded connection, a snap-fit ​​mechanism, or a quick-release pin. Preferably, the contour wheel 20 is fixed to the support 22 via a pivot. When it is necessary to grind R-corners of different radii, the operator can easily disassemble the current contour wheel 20 and replace it with a contour wheel 20 that matches the target R-corner size. For example, a series of contour wheels 20 with different diameters or curvatures can be prepared to cover common R-corner size ranges.

[0091] The tension of the sanding belt 27 is crucial for the grinding effect and the lifespan of the sanding belt 27. To achieve adjustment of the sanding belt 27 tension, this application designs the pulley 26 as a slidably engaged with the floating device 3. The pulley 26 can be mounted on a linear guide or guide mechanism on the floating device 3, allowing it to move in a preset direction. A tensioning assembly 24, such as a spring mechanism, pneumatic cylinder, or hydraulic cylinder, engages between the grinding assembly 25 and the floating device 3 and is connected to the slidable pulley 26. By adjusting the driving force or position of the tensioning assembly 24, the movement of the pulley 26 can be precisely controlled, thereby adjusting the tension of the sanding belt 27. For example, when the sanding belt 27 is slack, the tensioning assembly 24 can push the pulley 26 outward, increasing the tension of the sanding belt 27.

[0092] The heat generated during grinding can cause workpiece deformation, surface burns, or premature failure of the abrasive belt 27. To address this, the grinding apparatus 5 also includes a cooling assembly 19 connected to the floating device 3. This cooling assembly 19 can be one or more nozzles positioned to precisely spray a cooling liquid (such as cutting fluid or water) or a cooling gas (such as compressed air) onto the contact area between the abrasive belt 27 and the workpiece. The cooling assembly 19 is connected via piping to an external coolant supply system, which includes a pump, a reservoir (for liquid coolants), and a flow control valve. By controlling the flow rate and pressure of the coolant, the heat generated in the grinding area can be effectively removed.

[0093] This embodiment significantly improves the adaptability, grinding efficiency, and stability of the in-tank R-angle grinding equipment. The detachable contour wheel 20 allows the equipment to quickly adapt to different R-angle grinding needs without replacing the entire grinding head, greatly improving the equipment's versatility and production flexibility. The sliding pulley 26, in conjunction with the tensioning assembly 24, ensures that the abrasive belt 27 maintains optimal tension throughout the grinding process, effectively preventing problems such as reduced grinding quality, belt slippage, and shortened belt life caused by belt slack, thus guaranteeing stable grinding results and a longer consumable lifespan. Furthermore, the cooling assembly 19 effectively dissipates heat generated in the grinding area, preventing workpiece thermal deformation, discoloration, or surface burns due to overheating, while protecting the abrasive belt 27 from high-temperature damage, further improving grinding quality and equipment reliability. These improvements work together to enable the equipment to complete diverse in-tank R-angle grinding tasks with higher efficiency and better quality. In practical applications, ensuring the precise and stable positioning of the water tank during the polishing process, and effectively managing the dust generated during polishing, are key issues affecting polishing efficiency, product quality, and the working environment.

[0094] Based on the above embodiments, in an optional embodiment of the present invention, such as... Figure 8 As shown, the product placement device 2 includes a V-shaped positioning stage 33, and a first vacuum suction cup 32 and a proximity switch 31 engaged with the V-shaped positioning stage 33 for detecting and fixing the workpiece. The product placement device 2 also includes a first telescopic member 29 and a first clamping member 30 engaged with the first telescopic member 29. The clamping member is used to clamp the water tank onto the V-shaped positioning stage 33. The grinding equipment also includes a first moving device 14 and a dust removal system 13. The first moving device 14 is used to drive the floating device 3 closer to the product placement device 2. The dust removal system 13 is engaged below the grinding device 5 and has a dust collection hopper for collecting grinding dust.

[0095] The V-shaped positioning platform 33 in the product placement device 2 is used for initial support and centering of the water tank. Its V-shaped structure can accommodate water tanks of different sizes and provides an initial positioning reference. The first vacuum suction cup 32 is used to firmly fix the water tank onto the V-shaped positioning platform 33 by negative pressure adsorption after the water tank is placed in place, preventing displacement or vibration during the polishing process, thereby ensuring polishing accuracy and safety. The proximity switch 31 is used to detect in real time whether the water tank has been accurately placed and fixed in place. When the water tank is detected to be in the correct position, the subsequent polishing process can be triggered to realize automated operation. The first telescopic member 29 presses the water tank from the opening side of the water tank, and further clamps the water tank firmly onto the V-shaped positioning platform 33 by mechanical clamping, together with the first vacuum suction cup 32, to ensure the stability and positioning accuracy of the water tank during the polishing process.

[0096] The first moving device 14 is used to drive the floating device 3 closer to the product placement device 2. This device typically consists of a motor, guide rail, and transmission mechanism, such as a linear module driven by a servo motor, which enables precise displacement control. Through the first moving device 14, the grinding end can accurately approach the inner radius of the water tank, preparing for subsequent grinding operations.

[0097] The dust collection system 13 is attached below the grinding device 5 and is equipped with a dust collection hopper for collecting grinding dust. The dust collection hopper is typically funnel-shaped, with its opening located below the grinding area, effectively capturing dust generated during the grinding process. The dust collection system 13 uses a fan to generate negative pressure, drawing dust into the dust collection hopper and transporting it through pipes to a dust collector for processing. This maintains a clean working environment, protects the health of operators, and prevents dust from causing wear or contamination to the equipment.

[0098] The V-shaped positioning platform 33, the first vacuum suction cup 32, the proximity switch 31, the first telescopic component 29, and the first clamping component 30 in the product placement device 2 work together to ensure precise centering and firm fixation of the water tank during the grinding process, greatly improving the stability and accuracy of grinding and avoiding grinding defects caused by workpiece displacement. The introduction of the first moving device 14 allows the grinding device 5 to approach the water tank to be ground accurately and flexibly, optimizing the grinding path and efficiency. At the same time, the dust removal system 13, by setting a dust suction hopper under the grinding device 5, can efficiently collect grinding dust, effectively improving the working environment, reducing the potential hazards of dust to equipment and personnel, and improving the overall cleanliness and safety of the production line. These improvements together ensure the automation, efficiency, and environmental friendliness of the R-angle grinding process in the water tank. Example 2: During the grinding of the radius (R) corner in the water tank, if only one grinding machine is used, it is usually necessary to frequently change grinding tools or adjust equipment parameters for different grinding stages (such as rough grinding and fine grinding). This operation mode is not only time-consuming and labor-intensive, and prone to interrupting the production process, but also makes it difficult to guarantee the continuous and efficient production requirements, thus limiting the overall production cycle and automation level.

[0099] Therefore, as Figures 1 to 10 As shown, this application also provides a constant angle pressure-adjustable water tank R-angle grinding production line, which includes at least two constant angle pressure-adjustable water tank R-angle grinding machines as described in any paragraph of Embodiment 1. The grinding machines are used for continuous processing of rough grinding and fine grinding of the water tank.

[0100] The production line is equipped with at least two independent grinding machines, each with the functions of the aforementioned water tank inner radius (R) corner grinding machine. This means it can place the water tank, grind the inner R-angle, float the grinding end, and adjust the grinding pressure. These machines can be flexibly configured according to production needs; for example, one machine can be dedicated to rough grinding, and another to fine grinding, or more machines can be used to achieve multi-pass fine grinding. These machines can be arranged in series or parallel and connected through an automated conveyor system to enable automatic transfer of workpieces between different machines. "Rough grinding" refers to using a larger-grit, higher-force abrasive belt 27 to initially remove material from the inner R-angle of the water tank, quickly correcting the shape and eliminating larger surface defects. "Fine grinding," on the other hand, refers to using a smaller-grit, lower-force abrasive belt 27 to perform a detailed surface treatment on the rough-ground inner R-angle of the water tank, achieving the required surface finish and precision.

[0101] In this embodiment, coarse grinding refers to grinding with an alumina abrasive belt 27 (120#). Fine grinding refers to grinding with a nylon wire-brushed abrasive belt 27 (180#). In other embodiments, coarse and fine grinding can use abrasive belts 27 with other roughnesses. This invention does not specifically limit this, as long as the roughness of the abrasive belt 27 in the previous grinding step is greater than the roughness of the abrasive belt 27 in the subsequent grinding step.

[0102] By assigning rough grinding and fine grinding to different grinding equipment, each piece of equipment can focus on its specific grinding task and be configured with corresponding grinding parameters (such as belt type, grinding speed, grinding pressure, etc.), thereby achieving seamless connection and continuous automated production of the water tank from rough processing to fine processing.

[0103] By breaking down the grinding process of the radius (R) corner inside the grinding tank into two or more independent stages—rough grinding and fine grinding—each completed by at least two dedicated grinding machines, this collaborative approach avoids the cumbersome operation of frequently changing grinding tools or adjusting process parameters on a single machine. This significantly improves the automation level and operational efficiency of the production line. The grinding tank can continuously circulate between different machines, enabling uninterrupted processing and drastically shortening the processing cycle of a single product, thus increasing the overall production pace. Furthermore, because each machine can be optimized for either rough or fine grinding tasks—for example, by selecting different grit sandpaper and adjusting the optimal grinding parameters—consistency and stability in grinding quality can be ensured, ultimately resulting in a high-quality surface finish for the radius (R) corner inside the grinding tank.

[0104] Preferably, the number of grinding machines is three. One machine is used for rough grinding of the four radius corners of the water tank. The other two machines are used for fine grinding of the two radius corners of the water tank, respectively, to match the production cycle.

[0105] The number of grinding equipment is three, meaning that the total number of devices used to perform grinding operations in this constant angle pressure-adjustable water tank R-angle grinding production line is three. These three devices can be physically arranged in series or parallel according to the layout requirements of the production line, and workpieces are transferred between them via the water tank moving device 7. This configuration is based on a comprehensive consideration of the characteristics of rough grinding and fine grinding processes, aiming to achieve a reasonable allocation of workload and optimized matching of production cycle time.

[0106] One grinding machine is specifically used for rough grinding of all four inner radius corners of the sink. Rough grinding is the initial stage of the grinding process, and its main purpose is to quickly remove larger defects, burrs, or oxide layers from the surface of the sink's radius corners, providing a good foundation for subsequent fine grinding. This machine is usually equipped with a high-grit abrasive belt (27) or grinding head to ensure a high material removal rate. Because rough grinding is relatively efficient and focuses primarily on the amount of material removed rather than the final surface finish, one machine is sufficient to handle the rough grinding of all four radius corners of the sink.

[0107] The other two grinding machines are used for fine grinding of the two radius corners of the water tank. Fine grinding is the finishing stage of the grinding process, aiming to further improve the surface finish, flatness, and dimensional accuracy of the radius corners of the water tank to meet product design requirements. This equipment is usually equipped with a 27-grit abrasive belt or grinding head with moderate grinding force and fine abrasive grit. Because fine grinding has higher surface quality requirements, requires more precise control and a longer processing time, the fine grinding task is assigned to two machines, with each machine responsible for handling the two radius corners of the water tank. This effectively distributes the workload and shortens the fine grinding cycle of a single workpiece.

[0108] The quantity and task allocation of the aforementioned grinding equipment are designed to match the production cycle time. Matching the production cycle time means that by accurately assessing the time required for each process (rough grinding and fine grinding) on ​​the production line and rationally allocating equipment resources, the processing speed of the entire grinding production line is coordinated with the production speed of upstream and downstream processes, avoiding bottlenecks or idle time, thereby ensuring the efficient and continuous operation of the production line. For example, if process analysis reveals that the time required for fine grinding of a single radius corner is twice that required for rough grinding of a single radius corner, then configuring two fine grinding machines and one rough grinding machine can balance the total capacity of rough grinding and fine grinding, thus achieving production cycle time matching.

[0109] By setting the number of grinding machines to three and clearly defining their functional divisions—one machine for rough grinding and two machines for fine grinding—this configuration fully considers the differences in process requirements and time required for rough and fine grinding. Fine grinding typically takes longer than rough grinding and demands higher surface quality. Therefore, allocating more equipment resources to fine grinding effectively reduces its workload, preventing it from becoming a bottleneck in the production line. This balances the production capacity of rough and fine grinding, ensuring that the water tanks can continuously flow at a stable speed on the production line. This significantly improves the overall operating efficiency and production cycle matching of the grinding production line, optimizes resource utilization, and ultimately enhances overall production capacity.

[0110] In the constant angle pressure regulating water tank R-angle grinding production line of this application, although multiple grinding equipment are set up to realize the continuous processing of rough grinding and fine grinding of the water tank, if there is a lack of efficient and accurate workpiece handling and positioning mechanism, it may lead to low transmission efficiency of the water tank between different grinding stations, and even affect the matching of grinding accuracy and production cycle, making it difficult to give full play to the automation advantages of the production line.

[0111] Based on the above embodiments, in an optional embodiment of the present invention, such as... Figures 1 to 3 As shown, the grinding production line also includes a water tank moving device 7. This water tank moving device 7 is designed to achieve automated, efficient, and precise transfer and positioning of the workpiece in the water tank between various grinding equipment or different grinding stations in the production line.

[0112] Preferably, the water tank moving device 7 includes an X-axis moving assembly 9, a Y-axis moving assembly 8, a Z-axis moving assembly 10, and a first rotary cylinder 12 and a second vacuum suction cup 11 engaged with the Z-axis moving assembly 10 for transporting and rotating the workpiece. The X-axis moving assembly 9 and the Z-axis moving assembly 10 adopt a closed linear slide rail module. The Y-axis moving assembly 8 adopts a servo motor, reducer, gear rack and pinion, and guide rail transmission, and is equipped with a bellows dust cover, soft limit and hard limit protection.

[0113] The introduction of the water tank moving device 7 significantly improves the automation level and operating efficiency of the R-angle grinding production line within the water tank. The X-axis moving assembly 9 and Z-axis moving assembly 10 adopt enclosed linear guide rail modules, ensuring not only high precision and rigidity of movement but also effectively resisting the erosion of environmental factors such as grinding dust through their enclosed design, greatly extending the equipment's service life and reducing maintenance costs. The Y-axis moving assembly 8 uses a servo motor, reducer, rack and pinion gears, and guide rail transmission, combined with a bellows dust cover, soft limit and hard limit protection, ensuring high precision, high load-bearing capacity, and operational stability of Y-axis movement, while providing multiple safety guarantees to effectively prevent contamination and collisions of mechanical parts.

[0114] More importantly, through the first rotary cylinder 12 and the second vacuum suction cup 11 connected to the Z-axis moving assembly 10, the water tank workpiece can not only be efficiently and accurately transported to each grinding station, but also be flexibly adjusted and rotated according to the grinding requirements. This allows the grinding equipment to perform comprehensive and thorough grinding on every inner R-angle of the water tank, greatly improving the integrity of the grinding and the quality of the final product.

[0115] Overall, the implementation of the water tank moving device 7 enables the entire grinding production line to achieve a high degree of automation and intelligence, significantly improving production efficiency, grinding quality and equipment operation stability, and effectively solving the problems of low workpiece handling efficiency, inaccurate positioning and difficulty in posture adjustment in the production line.

[0116] Based on the above embodiments, in an optional embodiment of the present invention, such as... Figure 1 and Figure 2 As shown, the grinding production line also includes a feeding device 6 and a discharging device 1. The feeding device 6 includes a traveling component 35 adapted to move along a preset path, a rotating tilting component 34 engaged with the traveling component 35, and a second rotary cylinder 36 and a third vacuum suction cup 37 engaged with the tilting component 34, for transporting the water tank to the discharging device 1. The discharging device 1 includes a belt conveyor, and a material detection sensor and a material arrival sensor disposed on the belt conveyor.

[0117] Specifically, the grinding device 5 grinds the inner radius of the water tank. Therefore, the water tank moving device 7 can only be attached to the bottom of the outer surface of the water tank. The subsequent process requires placing the water tank with its opening facing upwards onto the discharge device 1. Therefore, the feeding device 6 is attached to the bottom of the inside of the water tank and rotated to place the water tank with its opening facing upwards onto the discharge device 1.

[0118] By introducing the feeding device 6 and the discharging device 1, the grinding production line of this application achieves a fully automated process from external supply of water tanks to finished product output. The walking component 35, the tilting component 34, the second rotary cylinder 36, and the third vacuum suction cup 37 in the feeding device 6 work together to flexibly grab water tanks from different positions and adjust their posture according to production line requirements, ensuring that the water tanks are accurately and efficiently delivered to the grinding station. Simultaneously, the belt conveyor in the discharging device 1, in conjunction with material detection sensors and material arrival sensors, can stably receive and transport the finished grinding water tanks and monitor the material status in real time to prevent accumulation or leakage.

[0119] This automated loading and unloading mechanism greatly improves the continuous operation capability and overall automation level of the production line, reduces manual intervention, lowers labor intensity, and effectively improves production efficiency and product consistency, enabling the entire grinding production line to achieve unmanned or minimally manned operation.

[0120] Based on the above embodiments, in an optional embodiment of the present invention, the production process of the constant angle pressure regulating water tank R-angle grinding production line includes steps A1 to A4.

[0121] A1. Receive the signal that the workpiece has been placed in place, and fix the water tank in place using the product placement device 2.

[0122] The production process begins with the workpiece placement and fixing stage. When the water tank is placed on the V-shaped positioning stage 33 of the product placement device 2, the proximity switch 31 detects the positioning signal and triggers the vacuum suction cup and clamping components to firmly fix the water tank and prevent displacement during the grinding process.

[0123] A2. Start the sanding belt 27 and set its linear speed. Control the grinding end to perform rough grinding on the first inner radius. After rough grinding is completed, control the three-axis displacement device to rotate the water tank relative to the grinding end at a preset angle. Repeat the rough grinding until all four inner radius corners are rough ground.

[0124] After fixing, the system starts the abrasive belt 27 and sets the linear speed to begin rough grinding of the inner radius corners of the water tank. Driven by the pressure device 4, the grinding end contacts the first inner radius corner, using the alumina abrasive belt 27 for initial material removal. After rough grinding, the water tank moving device 7 uses a three-axis assembly and a rotary cylinder to adsorb the water tank, rotating it 90 degrees to grind the remaining three inner radius corners sequentially. This process achieves uniform processing through automated rotation, avoiding manual intervention. The precision of the water tank moving device 7 is due to the design of the X, Y, and Z axis assemblies; for example, a closed linear guide rail module ensures stable positioning.

[0125] A3. After rough grinding is completed, the three-axis displacement device is controlled to transfer the water tank to the fine grinding station. The first fine grinding station processes two inner R-angles of the water tank, and the second fine grinding station processes the other two inner R-angles of the water tank to achieve matching with the production line cycle.

[0126] After rough grinding, the water tank is transferred to the fine grinding station. Fine grinding uses nylon wire brushed abrasive belt 27. Because fine grinding is time-consuming, the production line uses two machines working together to handle the two inner radius corners of the water tank, matching the production cycle. The transfer process is completed by the water tank moving device 7, ensuring smooth flow of workpieces between stations. This multi-station layout optimizes resource utilization and improves overall productivity.

[0127] A4. After fine grinding, the three-axis displacement device is used to remove the water tank and hand it over to the unloading mechanism for placement on the discharge conveyor line. The discharge conveyor line is started and stopped according to the arrival detection signal of the discharge conveyor line.

[0128] Finally, the finely polished water tank is removed by the unloading device 6 and placed on the discharge conveyor line. The unloading device 6 adjusts the water tank's posture via the walking component 35 and the tilting component 34, ensuring its opening faces upwards, and is then transported to the belt conveyor line by a vacuum suction cup. The discharge device 1's sensors monitor the material status and control the start and stop of the conveyor line, achieving unmanned operation.

[0129] Specifically, the constant-angle, pressure-adjustable water tank R-angle grinding production line achieves a fully automated process, seamlessly connecting manual workpiece loading to finished product output. This process optimizes production cycle time through multi-station collaboration and intelligent control, ensuring the continuity and efficiency of the grinding process. The entire production process, through automated steps, achieves continuous processing from rough grinding to fine grinding, significantly improving grinding efficiency and quality consistency, reflecting the intelligent and integrated design of the production line.

[0130] Obviously, the above detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to describe preferred embodiments, not all embodiments, and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Based on the embodiments of the invention, any modifications, equivalent substitutions, improvements, etc., made by those skilled in the art to all other embodiments obtained without inventive effort are within the scope of protection of the invention.

Claims

1. A constant angle pressure regulating sink R-angle polishing apparatus, characterized by, The product placing device is suitable for placing a water tank. The polishing device comprises a supporting assembly and a polishing assembly connected to the supporting assembly; the polishing device is provided with a polishing end for polishing an inner R angle; The floating device is connected to the polishing device and is configured to move the polishing end without changing the angle of the polishing end; The pressure device is connected to the floating device to drive the polishing end to move; the pressure device is configured to adjust the pressure between the polishing end and the R angle; The pressure device comprises a cylinder and a proportional valve connected to the cylinder. The pressure control method of the pressure device is as follows:

2. A constant angle pressure regulating sink R-angle polishing apparatus according to claim 1, wherein Obtain the abrasive belt linear velocity and the polishing contact time, calculate the cumulative polishing distance and the wear amount from the cumulative polishing distance; Calculate the proportional valve input based on the wear amount to calculate the pressure set value and control the output pressure of the cylinder to compensate the polishing pressure; ； ； In the formula is the cumulative polishing distance; is the cumulative number of polishing sections; is the linear speed of the abrasive belt during the first polishing section; is the linear speed of the abrasive belt during the first polishing section; is the wear amount; represents the operation of taking the smaller value; represents the operation of taking the larger value; is the allowed cumulative polishing distance corresponding to the service life of the abrasive belt; The floating device comprises a fixed part, a moving part parallel to the fixed part, and two connecting parts connected between the fixed part and the moving part to form a parallel linkage mechanism; ； ； ； wherein is the compensated pressure set value; is the reference pressure in the new belt or reference state; is the wear sensitivity coefficient; is the limited pressure command value; is the allowed minimum pressure; is the allowed maximum pressure; is the electrical proportional valve input control quantity; is the proportional valve input lower limit; is the proportional valve input upper limit.

3. A constant angle pressure regulating sink R-angle polishing apparatus as defined in claim 1, wherein The supporting assembly is connected to the moving part and can move with the moving part without changing the angle. The center of gravity of the movable part of the floating device and the polishing device is located on the side of the fixed part away from the moving part; 4. A constant angle, variable pressure sink R-angle sanding apparatus as defined in claim 3, wherein, The pressure device is located on the side of the fixed part away from the moving part and is connected to the moving part to drive the moving part to translate in the direction parallel to the fixed part, thereby driving the polishing end of the polishing device to move along the inner R angle of the water tank. The supporting assembly comprises a supporting part, a profiling wheel connected to the supporting part, a first guide wheel, and two second guide wheels; the rotation axes of the profiling wheel and the first guide wheel are parallel; the rotation axes of the first guide wheel and the second guide wheels are perpendicular; 5. A constant angle pressure regulating sink R-angle polishing apparatus as defined in claim 1, wherein The polishing assembly comprises a belt wheel, a first motor connected to the belt wheel, and an abrasive belt connected to the profiling wheel, the first guide wheel, the second guide wheels, and the belt wheel; the rotation axes of the second guide wheels and the belt wheel are perpendicular, so that at least part of the abrasive belt is configured in an L-shaped structure. The profiling wheel is configured in a detachable structure to adapt to the polishing of R angles of different sizes; 6. A constant angle, variable pressure sink R-angle sanding apparatus as defined in claim 5, wherein, The belt wheel is slidably connected to the floating device; the polishing device further comprises a tensioning assembly connected to the polishing assembly and the floating device to adjust the tension of the abrasive belt; The polishing device further comprises a cooling assembly connected to the floating device to output cooling liquid or cooling gas. The product placing device comprises a V-shaped positioning table, a first vacuum chuck connected to the V-shaped positioning table, and a proximity switch for detecting and fixing a workpiece; 7. A constant angle, variable pressure sink R-angle sanding apparatus as described in any one of claims 1 to 6, wherein, The product placing device further comprises a first telescopic part and a first clamping part connected to the first telescopic part; the clamping part is used to clamp the water tank on the V-shaped positioning table. ​ The polishing device further comprises a first moving device and a dust removal system; the first moving device is used to drive the floating device to approach the product placing device; the dust removal system is connected below the polishing device and is provided with a dust suction hopper for collecting polishing dust.

8. A constant angle pressure regulating sink R-angle polishing production line, characterized in that, The polishing device comprises three constant-angle pressure-regulating R-angle polishing devices according to any one of claims 1 to 7; one device is used to coarsely polish four R-angles of the water tank; two devices are used to finely polish two R-angles of the water tank respectively to match the production rhythm.

9. The constant angle, variable pressure sink R-angle polishing production line of claim 8, wherein, The polishing device further comprises a water tank moving device; the water tank moving device comprises an X-axis moving assembly, a Y-axis moving assembly, a Z-axis moving assembly, a first rotary air cylinder and a second vacuum chuck connected to the Z-axis moving assembly, and is used to carry and rotate the workpiece; The X-axis moving assembly and the Z-axis moving assembly adopt a closed linear slide rail module; The Y-axis moving assembly adopts a servo motor, a speed reducer, a gear rack and a guide rail transmission, and is provided with an organ dust cover, a soft limit and a hard limit protection.

10. The constant angle pressure regulating sink R-angle polishing production line of claim 8, wherein, The polishing device further comprises a feeding device and a discharging device; The feeding device comprises a walking assembly suitable for moving along a preset path, a turnover assembly connected to the walking assembly and capable of rotating, and a second rotary air cylinder and a third vacuum chuck connected to the turnover assembly, and is used to carry the water tank to the discharging device; The discharging device comprises a belt conveying line, and a material detection sensor and a material in-place sensor arranged on the belt conveying line.

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