Glass polishing equipment

Abstract

Glass polishing equipment high in polishing efficiency and low in polishing cost comprises a machine table, an electric control cabinet, a workbench, a three-dimensional force sensor, a vacuum adsorption base and an XZ double-axis driving mechanism. The workbench comprises a supporting plate and a surrounding plate which are fixed to the machine table. The three-dimensional force sensor is fixed on the supporting plate; the vacuum adsorption base is fixed at the upper part of the three-dimensional force sensor; the XZ double-axis driving mechanism comprises a support fixed to the machine table, an X-axis lead screw mounted on the support, a first torque motor in driving connection with the X-axis lead screw, a first nut rotationally arranged on the X-axis lead screw in a sleeving mode, a mounting plate fixedly connected with the first nut, a Z-axis lead screw mounted on the mounting plate and a second torque motor in driving connection with the Z-axis lead screw. The Z-axis lead screw is rotationally sleeved with the second nut, the connecting plate is fixedly connected with the second nut, the third torque motor is fixed to the connecting plate, the polishing piece is detachably installed on an output shaft of the third torque motor and corresponds to the installation position, and the grinding liquid pipe is suspended above the installation position.

Description

Technical Field

[0001] The utility model relates to the technical field of glass processing equipment, in particular to a glass polishing equipment for 3D glass concave surface polishing. Background Art

[0002] In the process of 3D glass processing, it is often necessary to set a concave surface on the glass surface and polish the bottom and side walls of the concave surface to make the smoothness of the 3D glass surface meet the product use requirements. At present, in the industry, the glass to be polished is mainly fixed on a corresponding fixture, and a high-speed rotating grinding rod is used to polish the part of the thickness to be removed on the glass surface. For example, the Chinese invention patent application (CN112025475A) discloses a 3D optical glass concave surface flat polishing device, which sets the polishing ball as a spherical arc surface structure that coincides with the concave surface of the glass part to polish the concave curved surface of the glass part at one time. However, such a polishing device is only applicable to the case where the glass concave surface is a spherical concave surface. When it is necessary to polish a rectangular groove with an R angle on the glass (including the bottom plane, the groove side wall, and the R angle part connecting the bottom plane and the groove side wall), different types of grinding rods need to be replaced to polish different parts in the groove. Limited by the groove structure, it is difficult for the grinding rod to fit the plane to be polished, and the polishing effect is poor. The polishing of a rectangular groove with an R angle on the glass is difficult. Therefore, in actual operation, manual polishing is often required to complete, resulting in low polishing efficiency and high polishing cost for the rectangular groove with an R angle on the glass. Summary of the Utility Model

[0003] Based on this, it is necessary to provide a glass polishing equipment with high polishing efficiency and low polishing cost in view of the above deficiencies.

[0004] A glass polishing equipment, comprising:

[0005] A machine table, on the side wall of which an electric control cabinet is fixedly installed, and a PLC controller and a power module for supplying power to the PLC controller are accommodated in the electric control cabinet;

[0006] A workbench, which includes a support plate fixed on the upper surface of the machine table and a fence fixed on the support plate and surrounding an operation area above the support plate;

[0007] A three-dimensional force sensor, which is located in the operation area and fixed on the upper surface of the support plate, and the three-dimensional force sensor is electrically connected to the PLC controller;

[0008] A vacuum adsorption base, the vacuum adsorption base is located above the three-dimensional force sensor and is fixedly connected to the three-dimensional force sensor, a mounting position for clamping a product is provided on the top of the vacuum adsorption base, an air flow channel is provided in the vacuum adsorption base, the air flow channel passes through the upper surface of the vacuum adsorption base and forms an adsorption port in the mounting position, and the air flow channel passes through the side of the vacuum adsorption base and forms an air guide port for communicating with an external vacuum device;

[0009] The XZ dual-axis driving mechanism comprises a bracket located at the rear side of the support plate and fixed on the upper surface of the machine platform, an X-axis screw rod installed on the bracket and extending in the X-axis direction, a first torque motor fixed on the bracket and driving the X-axis screw rod to rotate, a first nut rotatably sleeved on the X-axis screw rod, a mounting plate fixedly connected to the first nut, a Z-axis screw rod installed on the mounting plate and extending in the Z-axis direction, a second torque motor fixed on the mounting plate and driving the Z-axis screw rod to rotate, a second nut rotatably sleeved on the Z-axis screw rod, and a second nut fixedly connected to the second nut. A connected connecting plate, a third torque motor fixed on the connecting plate, a polishing piece detachably mounted on the output shaft of the third torque motor and corresponding to the mounting position, and a grinding liquid tube suspended above the mounting position, wherein the input end of the grinding liquid tube is used to connect the grinding liquid, and the output end of the grinding liquid tube corresponds to the polishing piece, the first torque motor, the second torque motor and the third torque motor are electrically connected to the PLC controller respectively, and the PLC controller controls the torque of the first torque motor, the second torque motor and the third torque motor based on the force condition of the vacuum adsorption base detected by the three-dimensional force sensor.

[0010] In one of the embodiments, the bracket includes at least one column fixed on the upper surface of the machine table and extending along the Z-axis direction, a horizontal frame fixed on the top of the column and extending along the X-axis direction, and a fixed base fixed on the horizontal frame, wherein a through hole is provided on the fixed base, and the first torque motor is fixed on a side of the horizontal frame away from the fixed base, one end of the X-axis screw rod is drivingly connected to the output shaft of the first torque motor, and the other end of the X-axis screw rod passes through the through hole and rotates with the fixed base.

[0011] In one embodiment, the XZ dual-axis drive mechanism also includes an X-axis guide rail fixed on the horizontal frame and extending along the X-axis direction, an X-axis slider fixed on a side of the mounting plate adjacent to the horizontal frame and nested on the X-axis guide rail to slide with the X-axis guide rail, a Z-axis guide rail fixed on a side of the mounting plate facing away from the horizontal frame, and a Z-axis slider fixed on a side of the connecting plate adjacent to the mounting plate and nested on the Z-axis guide rail to slide with the Z-axis guide rail.

[0012] In one embodiment, the grinding liquid tube is fixed on a mounting plate or a connecting plate and extends along the Z-axis direction.

[0013] In one embodiment, the polishing member includes a fixing post for mounting on the output shaft of the third torque motor, and a grinding head fixedly connected to the end of the fixing post. The grinding head is made of PU material, or the grinding head includes a silica gel layer connected to the fixing post and a red abrasive layer connected to the silica gel layer.

[0014] In one embodiment, the thickness of the red abrasive layer is less than or equal to the thickness of the silica gel layer, and the red abrasive layer is a columnar structure; or the thickness of the red abrasive layer is greater than the thickness of the silica gel layer, and the red abrasive layer is a hollow tubular structure.

[0015] In one embodiment, a plurality of limit pins are spaced on the upper surface of the vacuum adsorption base, and the plurality of limit pins surround the adsorption port and jointly enclose the installation position.

[0016] In one embodiment, an air flow guiding groove communicating with the adsorption port is further formed in the area of the upper surface of the vacuum adsorption base where the installation position is located, and the air flow guiding groove is distributed along a mesh path, or a tree-shaped path, or a king-shaped path, or an H-shaped path.

[0017] In one embodiment, an annular waste liquid groove surrounding the vacuum adsorption base is formed on the upper surface of the support plate.

[0018] In one embodiment, a product taking and placing port is formed in the corresponding part of the front side of the support plate on the enclosing plate.

[0019] When implementing the glass polishing equipment of the present utility model, by setting an XZ biaxial driving mechanism and combining with a three-dimensional force sensor arranged at the bottom of the vacuum adsorption base, when the polishing member polishes a rectangular groove with an R angle on the glass surface and the polishing member fails to fit with the inner surface of the groove to be polished, the three-dimensional force sensor detects the force on the vacuum adsorption base and sends it to the PLC controller. The PLC controller controls the torques of the first torque motor, the second torque motor and the third torque motor based on the force condition of the vacuum adsorption base detected by the three-dimensional force sensor, so that the surface of the polishing member (i.e., the consumable) fits with the inner surface of the glass groove, so as to uniformly polish the rectangular groove part with an R angle, replacing the manual polishing method, greatly improving the polishing efficiency of the irregular curved surface on the glass, and reducing the polishing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the glass polishing equipment in an embodiment of the present utility model;

[0021] Figure 2 is a schematic structural diagram of the glass polishing equipment in an embodiment of the present utility model after removing the protective shell of the XZ biaxial driving mechanism;

[0022] Figure 3 is Figure 2A front view of the glass polishing apparatus in the illustrated embodiment;

[0023] Figure 4 It is a schematic diagram of the structure of the three-dimensional force sensor and the vacuum adsorption base in one embodiment of the utility model;

[0024] Figure 5 It is a structural schematic diagram of a polishing piece in one embodiment of the utility model;

[0025] Figure 6 It is a structural schematic diagram of a polishing member in another embodiment of the utility model;

[0026] Figure 7 This is a schematic structural diagram of a polishing piece in yet another embodiment of the present utility model. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0028] The utility model discloses a glass polishing device with high polishing efficiency and low polishing cost. The device controls the torque of the polishing piece so that the polishing piece fits the part to be polished, thereby realizing the polishing of rectangular grooves with R angles on the glass surface. Compared with the manual polishing method, the polishing efficiency is improved and the polishing cost is reduced. In addition, the present scheme utilizes an idle PMS-V small engraving machine. By modifying the engraving machine, a glass polishing device capable of polishing rectangular grooves with R angles on the glass is obtained. The modification cost is relatively low, about 10,000 yuan, which saves the equipment purchase cost and improves the equipment utilization rate.

[0029] For details, please combine Figures 1-4, the glass polishing equipment of this embodiment includes a machine platform 100, a workbench 200, a three-dimensional force sensor 300, a vacuum adsorption base 400, and an XZ biaxial drive mechanism 500. An electric control cabinet 600 is fixedly installed on the side wall of the machine platform 100. The electric control cabinet 600 houses a PLC controller and a power module for supplying power to the PLC controller. The workbench 200 includes a support plate 210 fixed on the upper surface of the machine platform 100, and a surrounding plate 220 fixed on the support plate 210 and enclosing an operation area above the support plate 210. The three-dimensional force sensor 300 is located in the operation area and fixed on the upper surface of the support plate 210. The three-dimensional force sensor 300 is electrically connected to the PLC controller. The vacuum adsorption base 400 is located above the three-dimensional force sensor 300 and fixedly connected to the three-dimensional force sensor 300. Preferably, in this embodiment, the three-dimensional force sensor 300 is fixed in the middle of the upper surface of the support plate 210. The top of the vacuum adsorption base 400 is provided with an installation position for clamping the product. An air flow channel (not shown in the figure) is provided in the vacuum adsorption base 400. The air flow channel penetrates the upper surface of the vacuum adsorption base 400 and forms an adsorption port (not shown in the figure) in the installation position. The air flow channel penetrates the side surface of the vacuum adsorption base 400 and forms a gas guide port 410 for communicating with an external vacuum device. An air pipe interface is installed at the gas guide port 410. In this way, when the gas guide port 410 is communicated with the external vacuum device, a negative pressure will be generated at the adsorption port, thereby firmly adsorbing the product placed in the installation position to prevent the product from shifting during the polishing process and improving the stability of product positioning and the reliability of product polishing operations.

[0030] The XZ two-axis drive mechanism 500 includes a bracket 510 located at the rear side of the support plate 210 and fixed on the upper surface of the machine platform 100, an X-axis lead screw 520 installed on the bracket 510 and extending in the X-axis direction, a first torque motor 530 fixed on the bracket 510 and driving the X-axis lead screw 520 to rotate, a first nut (not shown in the figure) rotatably sleeved on the X-axis lead screw 520, a mounting plate 540 fixedly connected to the first nut, a Z-axis lead screw 550 installed on the mounting plate 540 and extending in the Z-axis direction, a second torque motor 560 fixed on the mounting plate 540 and driving the Z-axis lead screw 550 to rotate, a second nut (not shown in the figure) rotatably sleeved on the Z-axis lead screw 550, a connecting plate 570 fixedly connected to the second nut, a third torque motor 580 fixed on the connecting plate 570, a polishing part 590 detachably installed on the output shaft of the third torque motor 580 and corresponding to the installation position, and a grinding liquid pipe (not shown in the figure) suspended above the installation position. The input end of the grinding liquid pipe is used to access grinding liquid, and the output end of the grinding liquid pipe corresponds to the polishing part 590. The first torque motor 530, the second torque motor 560, and the third torque motor 580 are respectively electrically connected to the PLC controller. The PLC controller controls the torques of the first torque motor 530, the second torque motor 560, and the third torque motor 580 based on the force condition of the vacuum adsorption base 400 detected by the three-dimensional force sensor 300. In this embodiment, the XZ two-axis drive mechanism 500 further includes a protective shell covering the bracket 510, the X-axis lead screw 520, the first torque motor 530, the mounting plate 540, the Z-axis lead screw 550, the second torque motor 560, and the connecting plate 570 to prevent the above components from being damaged by external impacts. The X-axis direction refers to the length direction of the machine platform 100, and the Z-axis direction refers to the height direction of the machine platform 100.

[0031] When the first torque motor 530 works, it will drive the X-axis lead screw 520 to rotate, so that the first nut rotatably sleeved on the X-axis lead screw 520 moves along the length direction of the X-axis lead screw 520, so as to adjust the position of the polishing part 590 along the length direction of the machine platform 100. Similarly, when the second torque motor 560 works, it will drive the Z-axis lead screw 550 to rotate, so that the second nut rotatably sleeved on the Z-axis lead screw 550 moves along the length direction of the Z-axis lead screw 550 (i.e., the height direction of the machine platform 100), so as to adjust the position of the polishing part 590 along the height direction of the machine platform 100. When the third torque motor 580 works, it drives the polishing part 590 to rotate. During the high-speed rotation of the polishing part 590, it contacts the glass surface, thereby realizing the polishing of the to-be-polished part of the glass surface.

[0032] In this embodiment, the position of the polishing member 590 is adjusted and the rotation of the polishing member 590 is controlled by setting the first torque motor 530, the second torque motor 560, and the third torque motor 580. A torque motor is a special motor with soft mechanical characteristics and a wide speed regulation range. Its output shaft outputs power with a constant torque. When the load increases, the rotational speed of the torque motor can automatically decrease, while the output torque increases to maintain balance with the load. In this embodiment, through torque control, the polishing member 590 can be made to fit the concave surface on the product. In addition, the torque motor can provide a large torque and can withstand a large load. Its frequency converter speed regulation has high precision, good controllability, and fast response speed, and can meet the requirements of application equipment with high precision.

[0033] In one embodiment, a display screen 610 electrically connected to the PLC controller and a control switch 620 located below the display screen 610 are provided on the front side of the electric control cabinet 600 (i.e., the side of the electric control cabinet 600 facing the operator when the glass polishing equipment is working); a maintenance door 630 is provided on one side of the electric control cabinet 600 facing away from the machine table 100, so as to open the maintenance door 630 and repair the electrical components in the electric control cabinet 600 when the equipment fails; an audible and visual alarm 640 electrically connected to the PLC controller is provided on the top of the electric control cabinet 600 to give a prompt when the equipment fails. The outer shell of the electric control cabinet 600 is made of cast iron material. The electric control cabinet 600 is 135 cm high and 32 cm wide. The distance between the front and rear sides of the electric control cabinet 600 is the same as or close to the distance between the front and rear sides of the machine table 100. The electric control cabinet 600 is hung on the left side wall of the machine table 100, which can reduce the floor area of the equipment.

[0034] The support plate 210 is used to provide installation positions for the three-dimensional force sensor 300 and the vacuum adsorption base 400. An installation seat 230 is provided at the bottom of the support plate 210, and this installation seat 230 is fixed on the upper surface of the machine table 100 to lift the height of the workbench 200. Further, an annular waste liquid groove 240 surrounding the vacuum adsorption base 400 is formed on the upper surface of the support plate 210, and a waste liquid outlet communicating with the annular waste liquid groove 240 is also formed at the bottom or side of the support plate 210. This waste liquid outlet is communicated with an external waste liquid treatment device or a waste liquid collection device to collect and discharge the polishing waste liquid generated during the glass polishing process. The surrounding plate 220 is used to separate the operation area of glass polishing from the external environment to prevent the polishing liquid from splashing outward during the polishing process. In this embodiment, the surrounding plate 220 can be a ring-shaped structure surrounding the edge of the support plate 210 or an open structure with one side open. Preferably, a product pick-up and placement opening 250 is formed at a position on the surrounding plate 220 corresponding to the front side of the support plate 210 to facilitate the operator to pick up and place the product on the vacuum adsorption base 400. The front side of the support plate 210 refers to the side of the support plate 210 where the operator is located when the glass polishing equipment is working, and the rear side of the support plate 210 refers to the side of the support plate 210 facing away from the operator when the glass polishing equipment is working.

[0035] The three-dimensional force sensor 300 realizes the accurate measurement of multi-dimensional force information by detecting the force components in three mutually perpendicular directions. Specifically, an elastic body is provided on the three-dimensional force sensor 300. When the object to be measured is subjected to an external force, the three-dimensional force sensor 300 fixedly connected to the object to be measured is also subjected to this force. In this way, the elastic body will deform, thereby changing the resistance value or capacitance value inside the three-dimensional force sensor 300, so as to achieve the purpose of detecting the force on the object in three-dimensional space. In this embodiment, by fixing the three-dimensional force sensor 300 at the bottom of the vacuum adsorption base 400, and the three-dimensional force sensor 300 is further fixed on the support plate 210 by screws. When the polishing part 590 acts on the glass product on the vacuum adsorption base 400, if the polishing part 590 fails to fit the part to be polished on the glass product, a moment will be generated on the glass product, the vacuum adsorption base 400 and the three-dimensional force sensor 300. In this way, the three-dimensional force sensor 300 detects the force condition of the product and sends it to the PLC controller, so that the PLC controller can feedback and adjust the moment of each torque motor to adjust the posture of the polishing part 590 to make the polishing part 590 fit the surface to be polished.

[0036] In one embodiment, a plurality of limit pins 420 are arranged at intervals on the upper surface of the vacuum adsorption base 400. The plurality of limit pins 420 surround the adsorption port and jointly form an installation position. The outer contour shape of the installation position is the same as the outer contour shape of the product to be polished, so that after the product is placed in the installation position, the outer surface of the product can be in contact with each limit pin 420 tightly, realizing the horizontal limit of the product to prevent the product from shaking in the horizontal direction. Further, an air flow guiding groove 430 communicating with the adsorption port is also provided on the upper surface of the vacuum adsorption base 400 in the area where the installation position is located. The air flow guiding groove 430 is distributed along a mesh path, or a tree-shaped path, or a king-shaped path, or an H-shaped path. By providing the air flow guiding groove 430 on the upper surface of the vacuum adsorption base 400, the contact area between the product in the installation position and the negative pressure is increased, so that the lower surface of the product can be completely attached and adsorbed on the upper surface of the vacuum adsorption base 400 to prevent the product from shaking in the vertical direction and improve the reliability of product positioning.

[0037] In one embodiment, the bracket 510 includes at least one column 511 fixed on the upper surface of the machine table 100 and extending in the Z-axis direction, a horizontal frame 512 fixed at the top of the column 511 and extending in the X-axis direction, and a fixed seat 513 fixed on the horizontal frame 512. A through hole is provided on the fixed seat 513. The first torque motor 530 is fixed on the side of the horizontal frame 512 away from the fixed seat 513. One end of the X-axis lead screw 520 is drivingly connected to the output shaft of the first torque motor 530, and the other end of the X-axis lead screw 520 passes through the through hole and is rotatably matched with the fixed seat 513. Preferably, the bracket 510 includes two columns 511 oppositely arranged at the rear side of the support plate 210, a horizontal frame 512 located above the two columns 511 and fixedly connected to the tops of the two columns 511, and a fixed seat 513 fixed on the front side surface of the horizontal frame 512 facing the support plate 210. In order to improve the rotation stability of the X-axis lead screw 520, a bearing is provided in the through hole to prevent the X-axis lead screw 520 from shaking during rotation. Similarly, a limit seat is fixed at the end of the mounting plate 540 away from the second torque motor 560. A through hole is also provided on the limit seat. The Z-axis lead screw 550 passes through the through hole and is rotatably matched with the limit seat to realize the limit of the end of the Z-axis lead screw 550 and prevent the Z-axis lead screw 550 from shaking during rotation, improving the reliability of the position adjustment of the polishing part 590.

[0038] The XZ two-axis drive mechanism 500 further includes an X-axis guide rail 514 fixed on the horizontal frame 512 and extending in the X-axis direction, an X-axis slider (not shown in the figure) fixed on one side of the mounting plate 540 adjacent to the horizontal frame 512 and nested on the X-axis guide rail 514 to slidably cooperate with the X-axis guide rail 514, a Z-axis guide rail 541 fixed on the side of the mounting plate 540 facing away from the horizontal frame 512, and a Z-axis slider (not shown in the figure) fixed on one side of the connecting plate 570 adjacent to the mounting plate 540 and nested on the Z-axis guide rail 541 to slidably cooperate with the Z-axis guide rail 541. Preferably, in this embodiment, an X-axis guide rail 514 is provided on each side of the X-axis lead screw 520 on the horizontal frame 512. Correspondingly, two rows of X-axis sliders corresponding to the two X-axis guide rails 514 are provided on the mounting plate 540, and each row of X-axis sliders includes at least one X-axis slider; a Z-axis guide rail 541 is provided on each side of the Z-axis lead screw 550 on the mounting plate 540. Correspondingly, two rows of Z-axis sliders corresponding to the two Z-axis guide rails 541 are provided on the connecting plate 570, and each row of Z-axis sliders includes at least one Z-axis slider. By providing the X-axis guide rail 514 beside the X-axis lead screw 520 and the Z-axis guide rail 541 beside the Z-axis lead screw 550, the stability of the polishing part 590 when moving in the horizontal and vertical directions is improved, and the accuracy of the position adjustment of the polishing part 590 and the reliability of the product polishing operation are improved.

[0039] In one embodiment, the grinding liquid pipe is fixed on the mounting plate 540 or the connecting plate 570 and extends along the Z-axis direction. In another embodiment, a row of liquid spraying heads are fixed side by side on the enclosing plate 220. Each liquid spraying head is respectively communicated with an external grinding liquid container through an independent grinding liquid pipe, and an electromagnetic valve electrically connected to the PLC controller is respectively arranged at each liquid spraying head. Thus, during the polishing process of the glass, the PLC controller can control the electromagnetic valve of the liquid spraying head adjacent to the polishing part 590 to open according to the current position of the polishing part 590, so as to spray the grinding liquid to the polishing part 590.

[0040] Please refer to Figures 5-7 , in one embodiment, the polishing part 590 includes a fixing column 591 for mounting on the output shaft of the third torque motor 580, and a grinding head fixedly connected to the end of the fixing column 591. The grinding head is made of PU material, or the grinding head includes a silica gel layer 592 connected to the fixing column 591 and a red grinding skin layer 593 connected to the silica gel layer 592. Further, the thickness of the red grinding skin layer 593 is less than or equal to the thickness of the silica gel layer 592, and the red grinding skin layer 593 is a columnar structure; or the thickness of the red grinding skin layer 593 is greater than the thickness of the silica gel layer 592, and the red grinding skin layer 593 is a hollow tubular structure. It should be noted that according to the different concave processing parts on the product, different polishing parts 590 can be replaced to polish the product at different stages of product polishing. Specifically, when polishing the inner side wall of the groove, the grinding head of the polishing part 590 can adopt a cylindrical PU grinding head 594 with a diameter of 18 mm (such asFigure 5 When polishing the bottom plane of the groove, the grinding head of the polishing piece 590 can be a silica gel and red grinding head with a diameter of 11 mm, and the silica gel and red grinding head includes a silica gel layer 592 connected to the fixed column 591 and a red grinding layer 593 connected to the silica gel layer 592. The thickness of the red grinding layer 593 is less than or equal to the thickness of the silica gel layer 592, and the red grinding layer 593 is a columnar structure (such as Figure 6 The polishing time is 12min / pcs, the polishing effect is A+ grade, and the service life of the consumables is about 20PCS. When polishing the R angle of the bottom plane and the inner wall connection of the groove, the grinding head of the polishing piece 590 can be a silica gel and red grinding head with a diameter of 18mm, the thickness of the red grinding layer 593 is greater than the thickness of the silica gel layer 592, and the red grinding layer 593 is a hollow tubular structure (such as Figure 7 As shown in the figure, the polishing time is 6min / pcs, the polishing effect is A+ grade, and the service life of the consumables is about 10PCS. In this way, when the grinding head contacts the R corner, the red grinding leather layer 593 will deform to fit the R corner, thereby improving the polishing effect of the R corner. By using the above three different polishing parts 590 to polish different parts in the groove, the first-time yield of the product polishing reaches 86%.

[0041] During the polishing process of the product, first place the product in the installation position of the vacuum adsorption base 400 and fix the product by vacuum adsorption. Use a polishing piece 590 with a diameter of 18mm silicone and a red microdermabrasion grinding head. After starting the equipment, spray the grinding liquid on the polishing piece 590 and the product through the grinding liquid tube. The PLC controller will control the operation of each torque motor so that the polishing piece 590 can grind the R angle of the product to achieve a polishing effect. After processing the R angle of the groove, replace the PU grinding head with a diameter of 18mm. After starting the equipment, spray the grinding liquid on the polishing piece 590 and the product through the grinding liquid tube. The PLC controller will control the operation of each torque motor so that the polishing piece 590 can grind the inner wall of the groove of the product to achieve a polishing effect. After processing the inner wall of the groove, replace the polishing piece 590 with a diameter of 11mm silicone and a red microdermabrasion grinding head. After starting the equipment, spray the grinding liquid on the polishing piece 590 and the product through the grinding liquid tube. The PLC controller will control the operation of each torque motor so that the polishing piece 590 can process and grind the bottom plane of the product groove to achieve a polishing effect.

[0042] The above-mentioned glass polishing equipment is provided with an XZ dual-axis driving mechanism 500, and combined with a three-dimensional force sensor 300 arranged at the bottom of the vacuum adsorption base 400. When the polishing piece 590 polishes the rectangular groove with an R angle on the glass surface and the polishing piece 590 fails to fit with the inner surface of the groove to be polished, the three-dimensional force sensor 300 detects the force of the vacuum adsorption base 400 and sends it to the PLC controller. The PLC controller controls the torque of the first torque motor, the second torque motor and the third torque motor based on the force of the vacuum adsorption base detected by the three-dimensional force sensor, so that the surface of the polishing piece 590 (i.e., the consumable) fits with the inner surface of the glass groove, so as to evenly polish the rectangular groove part with an R angle. It replaces the manual polishing method, greatly improves the polishing efficiency of irregular curved surfaces on the glass, and reduces the polishing cost.

[0043] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0044] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A glass polishing device, characterized in that: include: A machine platform, wherein an electric control cabinet is fixedly installed on the side wall of the machine platform, and the electric control cabinet contains a PLC controller and a power module for supplying power to the PLC controller; A workbench, the workbench comprising a support plate fixed to the upper surface of the machine platform, and a panel fixed to the support plate and enclosing a working area above the support plate; A three-dimensional force sensor, the three-dimensional force sensor is located in the working area and fixed on the upper surface of the support plate, and the three-dimensional force sensor is electrically connected to the PLC controller; A vacuum adsorption base, the vacuum adsorption base is located above the three-dimensional force sensor and is fixedly connected to the three-dimensional force sensor, a mounting position for clamping a product is provided on the top of the vacuum adsorption base, an air flow channel is provided in the vacuum adsorption base, the air flow channel passes through the upper surface of the vacuum adsorption base and forms an adsorption port in the mounting position, and the air flow channel passes through the side of the vacuum adsorption base and forms an air guide port for communicating with an external vacuum device; The XZ dual-axis driving mechanism comprises a bracket located at the rear side of the support plate and fixed on the upper surface of the machine platform, an X-axis screw rod installed on the bracket and extending in the X-axis direction, a first torque motor fixed on the bracket and driving the X-axis screw rod to rotate, a first nut rotatably sleeved on the X-axis screw rod, a mounting plate fixedly connected to the first nut, a Z-axis screw rod installed on the mounting plate and extending in the Z-axis direction, a second torque motor fixed on the mounting plate and driving the Z-axis screw rod to rotate, a second nut rotatably sleeved on the Z-axis screw rod, and a second nut fixedly connected to the second nut. A connected connecting plate, a third torque motor fixed on the connecting plate, a polishing piece detachably mounted on the output shaft of the third torque motor and corresponding to the mounting position, and a grinding liquid tube suspended above the mounting position, wherein the input end of the grinding liquid tube is used to connect the grinding liquid, and the output end of the grinding liquid tube corresponds to the polishing piece, the first torque motor, the second torque motor and the third torque motor are electrically connected to the PLC controller respectively, and the PLC controller controls the torque of the first torque motor, the second torque motor and the third torque motor based on the force condition of the vacuum adsorption base detected by the three-dimensional force sensor.

2. The glass polishing equipment according to claim 1, characterized in that: The bracket includes at least one column fixed on the upper surface of the machine table and extending along the Z-axis direction, a horizontal frame fixed on the top of the column and extending along the X-axis direction, and a fixed base fixed on the horizontal frame, wherein a through hole is opened on the fixed base, the first torque motor is fixed on a side of the horizontal frame away from the fixed base, one end of the X-axis screw rod is drivingly connected to the output shaft of the first torque motor, and the other end of the X-axis screw rod passes through the through hole and rotates with the fixed base.

3. The glass polishing equipment according to claim 2, characterized in that: The XZ dual-axis driving mechanism also includes an X-axis guide rail fixed on the horizontal frame and extending along the X-axis direction, an X-axis slider fixed on a side of the mounting plate adjacent to the horizontal frame and nested on the X-axis guide rail to slide with the X-axis guide rail, a Z-axis guide rail fixed on a side of the mounting plate facing away from the horizontal frame, and a Z-axis slider fixed on a side of the connecting plate adjacent to the mounting plate and nested on the Z-axis guide rail to slide with the Z-axis guide rail.

4. The glass polishing equipment according to claim 1, characterized in that: The grinding liquid tube is fixed on the mounting plate or the connecting plate and extends along the Z-axis direction.

5. The glass polishing equipment according to claim 1, characterized in that: The polishing part includes a fixed column for installation on the output shaft of the third torque motor, and a grinding head fixedly connected to the end of the fixed column, wherein the grinding head is made of PU material, or the grinding head includes a silicone layer connected to the fixed column and a red grinding leather layer connected to the silicone layer.

6. The glass polishing equipment according to claim 5, characterized in that: The thickness of the red cortex layer is less than or equal to the thickness of the silicone layer, and the red cortex layer is a columnar structure; or the thickness of the red cortex layer is greater than the thickness of the silicone layer, and the red cortex layer is a hollow tubular structure.

7. The glass polishing equipment according to claim 1, characterized in that: A plurality of limit pins are arranged at intervals on the upper surface of the vacuum adsorption base, and the plurality of limit pins surround the adsorption port and together form the installation position.

8. The glass polishing equipment according to claim 1, characterized in that: The upper surface of the vacuum adsorption base is also provided with an airflow guiding groove connected to the adsorption port in the area where the installation position is located, and the airflow guiding groove is distributed along a mesh path, a tree path, a W-shaped path, or an H-shaped path.

9. The glass polishing equipment according to claim 1, characterized in that: The upper surface of the support plate is provided with an annular waste liquid tank surrounding the vacuum adsorption base.

10. The glass polishing equipment according to claim 1, characterized in that: A product taking and placing opening is provided on the enclosure plate at a position corresponding to the front side of the support plate.

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