Method for grinding the bottom edge of a finished ceramic product

Abstract

A method for grinding the bottom edge of a finished ceramic product, characterized by comprising the following steps: a. Obtaining the finished ceramic product from a feeding device; b. Performing at least one multi-angle fine grinding process on the bottom edge of the finished ceramic product; c. Sending the processed finished ceramic product to a discharging device; The multi-angle fine grinding process in step b is to use at least two abrasive belts to respectively form outwardly protruding circular rod-shaped arc-shaped curved surfaces and simultaneously rub against the bottom edge of the rotating finished ceramic product in a horizontal plane to grind the bottom edge. The beneficial effect of the present invention compared with the prior art is that by using the abrasive belt to form an outwardly protruding circular rod-shaped arc-shaped curved surface to contact the bottom edge of the rotating finished ceramic product for grinding, it is possible to grind the inner and outer sides of the bottom edge of the finished ceramic product, and the cost can be significantly reduced, and it is easier to replace and maintain the equipment; while using multiple abrasive belts can improve the grinding efficiency and make the force on the finished ceramic product more uniform, thereby effectively ensuring the grinding effect.

Description

Technical Field

[0001] The present invention relates to a method for grinding the bottom edge of a finished ceramic product. Background Art

[0002] The bottom of a finished ceramic product usually has a bottom edge, and there are usually problems such as rough surface and easy to cut the user's hand. Therefore, special equipment for grinding the bottom edge is required to process the bottom edge.

[0003] Currently, the equipment for grinding the bottom edge usually uses a disc-shaped grinding disc that rotates continuously to grind the bottom edge of the finished ceramic product. For example, a kind of automatic bottom grinding machine for ceramic products disclosed in the Chinese patent document with the publication number CN202377883U and the name "Automatic bottom grinding machine for ceramic products" includes an upper frame and a lower frame. The lower frame is provided with a circulating conveyor belt and a first motor, and the circulating conveyor belt is driven by the first motor; a grinding disc assembly is installed on the upper frame; the grinding disc assembly includes a horizontal grinding disc and a second motor for driving the horizontal grinding disc to rotate. The installation direction of the rotating shaft of the horizontal grinding disc is vertical, the rotating shaft of the horizontal grinding disc is connected to the rotating shaft of the second motor, and the horizontal grinding disc is located at the lowermost end of the grinding disc assembly; the upper frame is also provided with a vertical power mechanism for driving the grinding disc assembly to move up and down; a first photoelectric eye device is fixedly installed on the upper frame, and the grinding disc assembly is located in front of the first photoelectric eye device; a PLC programming controller is also provided. The first photoelectric eye device is connected to the PLC programming controller through a signal line, and the PLC programming controller is connected to the vertical power mechanism through a signal line.

[0004] However, the applicant found that the disadvantage of this processing method is that the grinding disc, that is, the disc-shaped grinding disc, the part used for grinding is its top surface or bottom surface. Therefore, during grinding, in fact, a plane of the grinding disc continuously rubs against the bottom edge of the finished ceramic product. Although the processing speed is relatively fast, there are many disadvantages: due to the large individual differences caused by the shrinkage of the finished ceramic product, and the lifting distance of the grinding disc during work is preset, it is easy to cause the situation that the grinding disc descends to the lowest position but cannot contact the finished ceramic product or the grinding disc presses the finished ceramic product, and the probability is not low; the grinding accuracy is relatively low, and it is difficult to obtain fine grinding of the bottom edge. In particular, it is difficult for the grinding disc to grind the inner and outer sides of the bottom edge. Therefore, it is impossible to process a smooth single curved surface or multiple curved surfaces, and it is difficult to meet the increasing quality requirements of people for finished ceramic products. In addition, the cost of the grinding disc is high, and a large amount of electric energy is consumed for driving. Therefore, both the manufacturing cost and the use cost are relatively high. Moreover, the utilized area of the grinding disc is limited, and the unutilized part is wasted. Summary of the Invention

[0005] The object of the present invention is to provide a method for grinding the bottom edge of a finished ceramic product, which can grind the inner and outer sides of the bottom edge of the finished ceramic product with low cost. The technical solution adopted is as follows:

[0006] A method for grinding the bottom edge of a finished ceramic product, characterized by comprising the following steps:

[0007] a. Obtain the finished ceramic product from the feeding device;

[0008] b. Perform at least one multi-angle fine grinding process on the bottom edge of the finished ceramic product;

[0009] c. Send the processed finished ceramic product to the discharging device;

[0010] For the multi-angle fine grinding process in step b, at least two abrasive belts are used to respectively form outwardly protruding circular rod-shaped arc-shaped surfaces, which simultaneously rub against the bottom edge of the rotating finished ceramic product in the horizontal plane to grind the bottom edge. The purpose of using multiple abrasive belts is to improve the grinding efficiency, make the force on the finished ceramic product more uniform, and effectively ensure the grinding effect; moreover, using abrasive belts can significantly reduce the production cost and usage cost, and it is easier to replace the abrasive belts and maintain the equipment.

[0011] In a preferred solution, during grinding, the abrasive belt remains stationary, and the finished ceramic product rotates in the horizontal plane so that the bottom edge of the finished ceramic product rubs against the abrasive belt to complete the grinding of the bottom edge.

[0012] In a more preferred solution, the central axis of the circular rod-shaped arc-shaped surface has an angle with the horizontal plane, and the angle is 1 - 10 degrees. Such a design is for better processing of the bottom edge, and the producer can set the size of the angle according to the required bottom edge contour. In a preferred solution, the two abrasive belts are symmetrically arranged relative to the bottom edge of the finished ceramic product, and the circular rod-shaped arc-shaped surfaces of the two abrasive belts have the same angle with the horizontal plane. Such a design can make the force on the finished ceramic product more uniform.

[0013] In a more preferred solution, after completing at least one grinding process, change the position of the grinding area of each abrasive belt so that when subsequent grinding processes are performed on the bottom edge of the finished ceramic product, each abrasive belt grinds the bottom edge of the finished ceramic product at a different position. The grinding area refers to the area where the abrasive belt contacts the bottom edge of the finished ceramic product during grinding. This can make full use of the abrasive belt, reduce the consumption of the abrasive belt, effectively reduce the cost, and ensure the processing quality.

[0014] In a more preferred solution, the number of the abrasive belts is two, and the two abrasive belts respectively grind the two sides of the bottom edge of the finished ceramic product. By arranging the two abrasive belts on the two sides of the bottom edge of the finished ceramic product respectively, the force on the finished ceramic product can be made more uniform, and the quality of the grinding process can be better ensured.

[0015] In a preferred solution, the position of the finished ceramic product is first calibrated before removing it in step a. This ensures that the finished ceramic product is positioned correctly, enabling precise manipulation of the finished ceramic product at various workstations (including but not limited to grinding, picking up, and placing it down), thereby improving work efficiency and processing results. Because the dimensions of finished ceramic products can vary significantly, inaccurate positioning of the finished ceramic product during removal by a handling device (especially one employing a conventional vacuum suction cup) can compromise the quality of subsequent processing steps.

[0016] A better solution is that in step c, the finished ceramic product that has completed all processing is sent to a delivery device, and the delivery device sends the finished ceramic product away.

[0017] In a preferred solution, a step d is further provided between steps b and c, for cleaning and / or wiping the bottom edge.

[0018] A more optimal solution is that step e is further provided between steps d and c, in which a bottom label is printed on the bottom surface of the finished ceramic product.

[0019] Compared with the prior art, the beneficial effect of the present invention is that a sanding belt is used to form an outward-protruding rod-shaped arc surface to contact the bottom edge of the rotating ceramic product to achieve grinding, so that the inner and outer sides of the bottom edge of the ceramic product can be ground, and the cost can be greatly reduced, and the replacement and maintenance of equipment are easier; and the use of multiple sanding belts can improve the grinding efficiency and make the ceramic product more evenly stressed, thereby effectively ensuring the grinding effect; the central axis of the rod-shaped arc surface has an angle with the horizontal surface, so that the producer can set the size of the angle according to the bottom edge contour required to be obtained, thereby achieving grinding of the inner and outer sides of the bottom edge of the ceramic product; and after the grinding process is completed, the position of each sanding belt is changed so that the sanding belt can use different positions to grind the bottom edge of the ceramic product, fully utilizing the sanding belt, reducing the consumption of the sanding belt, effectively reducing costs, and ensuring the quality of processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0021] Figure 2 yes Figure 1 A schematic structural diagram of the grinding device of the illustrated embodiment;

[0022] Figure 3 yes Figure 2 Schematic diagram after removing the mounting bracket and positioning slots;

[0023] Figure 4 yes Figure 1 A schematic structural diagram of a finished ceramic product processed according to the embodiment shown. Specific Embodiments

[0024] As shown Figure 4 in

[0025] Figure

[0026] a, obtaining a ceramic finished product 7 from a feeding device;

[0027] b, performing at least one multi-angle fine grinding process on the bottom edge 701 of the ceramic finished product 7;

[0028] c, sending the processed ceramic finished product 7 to a discharging device.

[0029] The multi-angle fine grinding process in step b is to use at least two abrasive belts to respectively form outwardly protruding circular rod-shaped arc surfaces and simultaneously rub against the bottom edge 701 of the ceramic finished product 7 rotating in the horizontal plane to grind the bottom edge 701. The purpose of using multiple abrasive belts is to improve the grinding efficiency and make the ceramic finished product 7 more evenly stressed, thereby effectively ensuring the grinding effect; moreover, using abrasive belts can significantly reduce the production cost and usage cost, and it is easier to replace and maintain the equipment. According to the requirements of processing accuracy, abrasive belts with different parameters can be used. For example, 60 mesh or 120 mesh is used for rough grinding, and 300 mesh is used for fine grinding.

[0030] As shown Figure 2 in 3 Figure

[0031] In an alternative embodiment, during grinding, the abrasive belt remains stationary, and the ceramic finished product 7 rotates in the horizontal plane so that the bottom edge 701 of the ceramic finished product 7 rubs against the abrasive belt to complete the grinding of the bottom edge 701.

[0032] As shown Figure 2 in 3 Figure

[0033] In an alternative embodiment, the central axis of the circular rod-shaped arc surface has an angle with the horizontal plane, and the angle of this angle is 1 - 10 degrees. Such a design is to better process the bottom edge 701, and the producer can set the size of the angle according to the required contour of the bottom edge 701. Figure 2 in 3As shown, in an optional embodiment, two sanding belts are symmetrically arranged relative to the bottom edge 701 of the ceramic product 7, and the round rod-shaped arc surfaces of the two sanding belts have the same angle with the horizontal plane. This design can make the ceramic product 7 more evenly stressed.

[0034] like Figure 2 、 3 As shown in an optional embodiment, the angle between the central axis of the circular rod-shaped arcuate surface and the horizontal plane is 4 degrees.

[0035] In an optional embodiment, the angle between the central axis of the circular rod-shaped arcuate surface and the horizontal plane is 1 degree.

[0036] In an optional embodiment, the angle between the central axis of the circular rod-shaped arcuate surface and the horizontal plane is 10 degrees.

[0037] like Figure 2 、 3 As shown, in an optional embodiment, after completing at least one grinding process, the position of the grinding zone of each abrasive belt is changed, so that during subsequent grinding processes on the bottom edge 701 of the finished ceramic product 7, each abrasive belt grinds the bottom edge 701 of the finished ceramic product 7 at a different position. The grinding zone refers to the area where the abrasive belt contacts the bottom edge of the finished ceramic product during grinding. This fully utilizes the abrasive belt, reduces abrasive belt consumption, effectively lowers costs, and ensures processing quality.

[0038] like Figure 2 、 3 As shown, an optional embodiment uses the expansion and contraction of the cylinder 3022 to change the position of the abrasive belt, that is, to move the grinding unit 3021 a certain distance in the horizontal plane. This actually changes the position of the grinding zone along the transverse direction of the abrasive belt.

[0039] like Figure 2 、 3 As shown, in an optional embodiment, the abrasive belt moves a certain distance longitudinally. This changes the position of the grinding zone along the longitudinal direction (the direction in which the abrasive belt extends) of the abrasive belt. The grinding unit 3021 can be manually or motorized to drive a guide roller to rotate, thereby causing the guide roller to drive the abrasive belt to move a certain distance longitudinally. The distance of each movement is greater than the diameter of the grinding zone. The specific value can be determined by the manufacturer through a small amount of experimentation.

[0040] like Figure 2 、 3 As shown, an alternative embodiment changes the position of the grinding zone by first moving it transversely along the abrasive belt. When the grinding zone reaches the edge of the abrasive belt, it is moved longitudinally along the abrasive belt once, and then reversed transversely along the abrasive belt. In other words, the grinding zone moves along the abrasive belt in a continuously winding S-shaped curve, which maximizes the use of the abrasive belt.

[0041] In an alternative embodiment, the number of abrasive belts is three, and the three abrasive belts are evenly distributed along the circumferential direction of the bottom edge 701 of the ceramic finished product 7 and grind the bottom edge 701 synchronously.

[0042] As Figure 2 , 3 shown, in an alternative embodiment, the number of abrasive belts is two, and the two abrasive belts grind the two sides of the bottom edge 701 of the ceramic finished product 7 respectively. The two abrasive belts are respectively arranged on the two sides of the bottom edge 701 of the ceramic finished product 7, so that the ceramic finished product 7 can be stressed more evenly and the quality of the grinding process can be better guaranteed. In this embodiment, there are two grinding units 3021, and one of the grinding units 3021 is arranged on the air cylinder 3022, so that the relative positions of the two grinding units 3021 can be changed. The air cylinder 3022 and the two grinding units 3021 form a grinding mechanism 302. In this embodiment, the mounting frame 301, the positioning groove 303 and the two grinding mechanisms 302 form a grinding device 3.

[0043] In one embodiment, the two grinding units 3021 are respectively arranged on two air cylinders 3022. The two air cylinders 3022 drive the two grinding units 3021 to move respectively, so as to change the relative positions of the two grinding units 3021.

[0044] As Figure 1 shown, in an alternative embodiment, the number of times of multi-angle fine grinding is two.

[0045] In an alternative embodiment, the number of times of multi-angle fine grinding is one.

[0046] In an alternative embodiment, before taking away the ceramic finished product 7 in step a, the position of the ceramic finished product 7 is calibrated first. The purpose of doing this is to make the ceramic finished product 7 in the correct position, so that the ceramic finished product 7 can be accurately operated at each work station (including but not limited to grinding, picking up, putting down, etc.), improve work efficiency and improve the processing effect. Since the size changes of different ceramic finished products 7 may be very large, and when the ceramic finished product 7 is taken away by a pick-and-place device (especially when the pick-and-place device uses a common vacuum chuck to pick and place the ceramic finished product 7), if the position is inaccurate, it may affect the processing quality of subsequent processing steps.

[0047] As Figure 1As shown, in step a, a conveyor belt 4 with a calibration mechanism is used to convey and calibrate the ceramic finished products 7. In this embodiment, the conveyor belt 4 is a common belt conveyor, and a calibration mechanism composed of a plurality of calibration units consisting of cylinders and positioning rods is arranged at the outlet of the conveyor belt 4. Specifically, a calibration station is arranged at the outlet of the conveyor belt 4, and the calibration units are evenly arranged along the circumferential direction of the calibration station. The piston shafts of the cylinders of each calibration unit extend towards the calibration station respectively, and the positioning rods of each calibration unit are respectively installed on the piston shafts of the corresponding cylinders. After the ceramic finished products 7 move to the calibration station and stop, the positioning rods of each calibration unit move towards the calibration station respectively, and push the ceramic finished products 7 to move to the accurate positions, so as to realize the calibration work of the ceramic finished products 7.

[0048] In an alternative embodiment, in step c, the ceramic finished products 7 that have completed all processing are sent to a sending device, and the sending device 5 sends away the ceramic finished products 7. The sending device 5 is a belt conveyor.

[0049] In an alternative embodiment, a step d of cleaning and / or wiping the bottom edge 701 is further arranged between step b and step c.

[0050] In an alternative embodiment, the cleaning process of step d is to spray water to clean the bottom edge 701 of the ceramic finished product 7, and the wiping process of the bottom edge is to wipe the bottom edge 701 of the ceramic finished product 7 clean. After the ground ceramic finished products 7 pass through step d, the bottom of the ceramic finished products 7 is cleaned and dried.

[0051] Step d uses a cleaning and / or wiping device (not shown in the figure) to complete the cleaning and / or wiping of the bottom edge 701. In this embodiment, the cleaning and / or wiping device is a common cleaning and / or wiping device.

[0052] In an alternative embodiment, a step e of printing a bottom label on the bottom surface of the ceramic finished product 7 is further arranged between step d and step c.

[0053] As Figure 1 shown, step e uses a bottom label printing device 6 to complete the work of printing a bottom label on the bottom surface of the ceramic finished product 7. In this embodiment, the bottom label printing device 6 is a common printing device.

[0054] As Figure 1 shown, in an alternative embodiment, a rotary table type synchronous lifting transfer device 1 and a plurality of rotary vacuum suction cup picking and placing devices 2 installed on the rotary table type synchronous lifting transfer device 1 are used to transfer the ceramic finished products 7 between various processing devices. In this embodiment, the rotary table type synchronous lifting transfer device 1 and the rotary vacuum suction cup picking and placing device 2 are both common devices.

[0055] Six workstations A, B, B, D, E, and C are arranged around the rotary synchronous lifting and transferring device 1. The number of rotary vacuum suction cup picking and placing devices 2 is 12, with 2 devices arranged at each workstation. A conveyor belt 4 is arranged at workstation A to feed in two ceramic finished products simultaneously; grinding devices 3 are arranged at the two B workstations respectively, and each grinding device 3 grinds two ceramic finished products simultaneously; a cleaning and / or wiping device (not shown) is arranged at workstation D to clean and / or wipe two ceramic finished products simultaneously; a bottom label printing device 6 is arranged at workstation E to print bottom labels on the bottoms of two ceramic finished products simultaneously; a discharging device 5 is arranged at workstation C to discharge two processed ceramic finished products simultaneously.

[0056] Since a circular rod-shaped arc surface formed by a sand belt is used to grind the bottom edge of the ceramic finished product, the inner side, the bottom edge, and the outer side of the bottom edge can be well ground to obtain one or more curved surfaces, meeting the requirements of high-quality ceramic finished products; and the central axis of the circular rod-shaped arc surface has an angle with the horizontal plane, facilitating the circular rod-shaped arc surface to extend into the inner side of the bottom edge or to the outer side of the bottom edge, enabling better grinding of the bottom edge. When multiple sand belts are symmetrically arranged, the horizontal components of the forces exerted on the ceramic finished product by them can cancel each other out (partially or completely), making the force on the ceramic finished product more uniform; after grinding, by changing the positions (horizontally or vertically) of the grinding areas of each sand belt, the sand belts can be fully utilized, reducing the consumption of the sand belts, effectively reducing costs, and ensuring the quality of processing; before removing the ceramic finished product 7, calibrating the position of the ceramic finished product 7 can further ensure the quality of subsequent processing, especially for embodiments using vacuum suction cups to pick and place ceramic finished products (such as Figure 1 shown).

[0057] In addition, it should be noted that for the specific embodiments described in this specification, the names of their respective parts, etc. can be different. Any equivalent or simple changes made according to the structure, features, and principles described in the inventive concept of this invention patent are included within the protection scope of this invention patent. Those skilled in the technical field to which this invention pertains can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, as long as they do not deviate from the structure of this invention or exceed the scope defined by this claims, they should fall within the protection scope of this invention.

Claims

1. A method for grinding the bottom edge of a finished ceramic product, characterized in that: It includes the following steps: a. Obtain the ceramic finished product from the feeding device; b. Conduct at least one multi-angle fine grinding process on the bottom edge of the ceramic finished product; c. Send the processed ceramic finished product to the discharging device; The multi-angle fine grinding process in step b is to use at least two abrasive belts to respectively form outwardly protruding circular rod-shaped arc-shaped surfaces and simultaneously rub against the bottom edge of the ceramic finished product rotating in the horizontal plane to grind the bottom edge; The number of the abrasive belts is multiple, and the multiple abrasive belts are evenly distributed along the circumferential direction of the bottom edge of the ceramic finished product and grind the bottom edge synchronously; Before taking away the ceramic finished product in step a, first calibrate the position of the ceramic finished product; In step a, the conveying and calibration of the ceramic finished product are completed by using a conveyor belt with a calibration mechanism; the conveyor belt adopts a common belt conveyor, and a calibration mechanism composed of multiple calibration units composed of cylinders and positioning rods is arranged at the conveyor belt outlet; when the ceramic finished product moves to the calibration station and stops, the positioning rods of each calibration unit move towards the calibration station respectively and push the ceramic finished product to move to the accurate position, so as to complete the calibration work of the ceramic finished product; A rotary synchronous lifting transfer device and multiple rotary vacuum suction cup picking and placing devices installed on the rotary synchronous lifting transfer device are used to transfer the ceramic finished product between various processing devices.

2. The edge grinding method for the bottom edge of the finished ceramic product according to claim 1, characterized in that: During grinding, the abrasive belt is stationary, and the ceramic finished product rotates in the horizontal plane and makes the bottom edge of the ceramic finished product rub against the abrasive belt to complete the grinding of the bottom edge.

3. The edge grinding method for the bottom edge of the finished ceramic product according to claim 2, characterized in that: The central axis of the circular rod-shaped arc-shaped surface has an included angle with the horizontal plane, and the angle of the included angle is 1-10 degrees.

4. The edge grinding method for the bottom edge of the finished ceramic product according to claim 3, characterized in that: After completing at least one grinding process, change the position of the grinding area of each abrasive belt so that each abrasive belt uses a different position to grind the bottom edge of the ceramic finished product during the subsequent bottom edge grinding process of the ceramic finished product.

5. The edge grinding method for the bottom edge of the finished ceramic product according to any one of claims 1-4, characterized in that: The number of the abrasive belts is two, and the two abrasive belts respectively grind the two sides of the bottom edge of the ceramic finished product.

6. The edge grinding method for the bottom edge of the finished ceramic product according to any one of claims 1-4, characterized in that: The number of times of the multi-angle fine grinding process is two.

7. The edge grinding method for the bottom edge of the finished ceramic product according to any one of claims 1-4, characterized in that: In step c, the ceramic finished product that has completed all processing is sent to the discharging device, and the discharging device sends away the ceramic finished product.

8. The edge grinding method for the bottom edge of the finished ceramic product according to any one of claims 1-4, characterized in that: Step d of cleaning and / or wiping the bottom edge is also arranged between step b and step c.

9. The edge grinding method for the bottom edge of the finished ceramic product according to claim 8, characterized in that: Step e of printing a bottom label on the bottom surface of the ceramic finished product is also arranged between step d and step c.

Images