Surface grinding and polishing device and method for hardware tableware production and processing

Abstract

The invention relates to the technical field of hardware tableware polishing, and discloses a surface grinding and polishing device for hardware tableware production and processing, which comprises a first grinding assembly line and a second grinding assembly line, the first grinding assembly line comprises a feeding mechanism, a first clamp backflow conveying mechanism and a first material taking and grinding mechanism; tableware handles are automatically fixed to the tool clamps through the feeding mechanism, the automatic clamp changing mechanism completes tableware reversing and fixes the heads again, manual intervention is not needed in the whole process, repeated labor is greatly reduced, the labor intensity of workers is reduced, and the production efficiency is improved. The first grinding assembly line grinds the head of tableware, the second grinding assembly line grinds a handle, seamless connection is achieved through the automatic clamp changing mechanism, shutdown and waiting of a single machine are avoided, multiple pieces of tableware can be subjected to graded grinding and procedure parallel processing at the same time, and the overall utilization rate of equipment is greatly increased.

Description

Technical Field

[0001] This invention relates to the field of polishing technology for metal tableware, specifically to a surface grinding and polishing device for the production and processing of metal tableware. Background Technology

[0002] Metal tableware is an indispensable utensil in daily life and the catering industry, encompassing various categories such as spoons and forks. Its materials are mostly stainless steel and brass, characterized by durability and ease of cleaning. The surface finish of this type of tableware directly affects product quality and user experience; therefore, surface polishing is a crucial process in production. It requires meticulous processing to remove burrs and scratches from the metal surface, creating a smooth and even texture while enhancing rust resistance.

[0003] Existing tableware polishing equipment has the following drawbacks during the polishing process:

[0004] Before each polishing and waxing, the tableware must be manually fixed. After polishing one end, the tooling must be removed, the tableware turned around and fixed again, resulting in a large amount of repetitive labor.

[0005] The polishing equipment is shut down when the tableware is manually turned over, and the waxing equipment also has a similar waiting time, which severely reduces the effective operating rate of the equipment.

[0006] Furthermore, when it is necessary to process tableware from coarse grinding to fine grinding, the grinding mechanism needs to be transferred between multiple devices or the tableware needs to be transferred from grinding to waxing. These processes increase the time cost of connecting the processes, and the tableware surface may be damaged due to collisions during the transfer process.

[0007] Therefore, we propose a surface grinding and polishing device and method for the production and processing of metal tableware. Summary of the Invention

[0008] The purpose of this invention is to provide a surface grinding and polishing device and method for the production and processing of metal tableware, thereby solving or at least alleviating one or more of the above-mentioned problems and other problems existing in the prior art.

[0009] To achieve the above objectives, the present invention provides the following technical solution: a surface grinding and polishing device for the production and processing of metal tableware, comprising:

[0010] The first grinding production line includes a feeding mechanism, a first clamp return conveying mechanism, and a first material picking and grinding mechanism. The first material picking and grinding mechanism includes multiple sets of first material picking and grinding units, which are equidistantly arranged along the length direction of the first clamp return conveying mechanism.

[0011] The feeding mechanism is used to fix the handle of the metal tableware to be polished onto the tooling fixture.

[0012] The first material handling and polishing unit includes a first six-axis robot and a first polishing machine;

[0013] The first fixture return conveying mechanism is used to convey the empty tooling fixture back to the feeding mechanism;

[0014] The second grinding production line includes an automatic clamp changing mechanism, a second clamp return conveying mechanism, and a second material picking and grinding mechanism. The second material picking and grinding mechanism includes multiple sets of second material picking and grinding units, which are equidistantly arranged along the length direction of the second clamp return conveying mechanism.

[0015] The automatic clamp changing mechanism is used to change the orientation of the metal tableware with the head polished, and then fix the head of the metal tableware onto the tooling fixture.

[0016] The second material handling and polishing unit includes a second six-axis robot and a second polishing machine;

[0017] The second fixture return conveying mechanism is used to transport the empty tooling fixture back to the automatic fixture changing mechanism;

[0018] Each of the first and second polishing machines is equipped with a waxing structure.

[0019] In a surface grinding and polishing device for hardware tableware production and processing according to the present invention, the tooling fixture includes a lower clamping plate and an upper clamping plate. A plurality of clamps are provided on the lower clamping plate. The plurality of clamps are equidistantly arranged along the length direction of the lower clamping plate. The lower chuck of the clamp is fixedly connected to the lower clamping plate, and the upper chuck of the clamp is fixedly connected to the upper clamping plate. Fixed plates are fixedly connected to both ends of the lower clamping plate, and a support shaft is fixedly connected to one side of the fixed plate.

[0020] In a surface grinding and polishing device for hardware tableware production and processing according to the present invention, optionally, both the first fixture return conveying mechanism and the second fixture return conveying mechanism include a conveying frame, both ends of the conveying frame are rotatably mounted with a drive shaft, one end of the conveying frame is fixedly mounted with a drive motor for driving one of the drive shafts to rotate, both ends of the drive shaft are fixedly connected with sprockets, two sprockets located on the same side at both ends of the conveying frame are connected by chain drive, and a support component for supporting and limiting the tooling fixture is fixedly mounted between the two chains;

[0021] The support assembly includes a horizontal plate, with U-shaped support plates fixedly connected to both ends of the horizontal plate. Each U-shaped support plate is fixedly connected to a bearing plate corresponding to one of the clamps. After the support shaft is placed inside the U-shaped support plate, the clamp can press against the bearing plate corresponding to it.

[0022] In a surface grinding and polishing device for hardware tableware production and processing according to the present invention, optionally, positioning components are provided at both ends of the conveyor frame. The positioning component includes a vertical plate, which is fixed to the side of the conveyor frame. A positioning cylinder is fixedly installed at the upper end of the vertical plate. A fixing block is fixedly connected to the piston rod end of the positioning cylinder. A positioning rod is fixedly connected to the side of the fixing block away from the positioning cylinder. A positioning groove is opened on the outer side of the U-shaped support plate, and the positioning rod can be inserted into the positioning groove.

[0023] In a surface grinding and polishing device for the production and processing of hardware tableware according to the present invention, the feeding mechanism may optionally include a first base, on which a feeding platform and a first clamping unit are provided;

[0024] The feeding platform is used to place the metal tableware to be polished;

[0025] The first clamping unit is used to press down the handle of the clamp on the first clamp return conveying mechanism, so that the tooling fixture clamps the handle of the metal tableware on the feeding table.

[0026] The first clamping unit includes a first upright frame, which is fixed on the first base. A first guide rail is fixedly installed on the top of the first upright frame. A first guide slider is slidably installed on the first guide rail. A first crossbeam is fixedly installed on the top of the first guide slider. A first cylinder is fixedly installed on the top of the first crossbeam. A first pressing locking rod is fixedly connected to the bottom of the piston rod of the first cylinder. A sixth cylinder is fixedly installed on the top of the first upright frame. The end of the piston rod of the sixth cylinder is fixedly connected to one side of the first crossbeam.

[0027] The feeding platform includes a support base, a first slider is fixedly installed at the bottom of the support base, a first slide rail is fixedly installed on the first base, the first slider is slidably installed on the first slide rail, support plates are fixedly installed at both ends of the support base, feeding plates are installed on the support plates, there are two feeding plates, and each of the two feeding plates has a placement groove for limiting the position of the metal tableware. The handle of the metal tableware is placed in the placement groove of one feeding plate, and the head of the metal tableware is placed in the placement groove of the other feeding plate.

[0028] A second cylinder is fixedly installed on the first base. The piston rod end of the second cylinder is fixedly connected to one side of the support base. By controlling the retraction of the piston rod of the second cylinder, the feeding platform can be moved from the manual feeding position to the first clamping unit.

[0029] In a surface grinding and polishing device for the production and processing of hardware tableware according to the present invention, optionally, the top of the support plate is provided with a plurality of adjustment grooves for adjusting the distance between two feeding plates, and the ends of the feeding plates are inserted into the adjustment grooves.

[0030] In a surface grinding and polishing apparatus for the production and processing of hardware tableware according to the present invention, the automatic clamp changing mechanism is optionally disposed between the first clamp return conveying mechanism and the second clamp return conveying mechanism;

[0031] The automatic clamp changing mechanism includes a second base, on which a flipping unit and a second clamping unit are provided;

[0032] The flipping unit is used to change the orientation of the polished metal tableware and turn the head of the metal tableware toward the tooling fixture on the second clamp return conveying mechanism.

[0033] The second clamping unit is used to press down the handle of the clamp on the second clamp return conveying mechanism, so that the tooling fixture clamps the head of the metal cutlery on the flipping unit;

[0034] The second clamping unit includes a second upright, which is fixed on the second base. A second guide rail is fixedly installed on the top of the second upright. A second slider is slidably installed on the second guide rail. A second crossbeam is fixedly installed on the second slider. A third cylinder is fixedly installed on the top of the second crossbeam. A second pressing locking rod is fixedly installed at the bottom of the piston rod of the third cylinder. A seventh cylinder is fixedly installed on the top of the second upright. The end of the piston rod of the seventh cylinder is fixedly connected to one side of the second crossbeam.

[0035] The flipping unit includes a first frame, a second slider is fixedly installed at the bottom of the first frame, a second slide rail is fixedly installed on the second base, the second slider is slidably installed on the second slide rail, a clamping assembly is rotatably installed inside the first frame, and a flipping motor for driving the clamping assembly to flip is fixedly installed on one side of the first frame.

[0036] A fourth cylinder is fixedly installed on the second base, and the piston rod end of the fourth cylinder is fixedly connected to the bottom of the first frame.

[0037] In a surface grinding and polishing device for the production and processing of hardware tableware according to the present invention, optionally, the clamping assembly includes a second frame, the second frame being rotatably mounted inside the first frame via a rotating rod, and the rotating shaft of the flipping motor being fixedly connected to one of the rotating rods;

[0038] A fifth cylinder is fixedly installed at both the top and bottom of the second frame. The piston rod end of the fifth cylinder slides into the inner side of the second frame and is then fixedly installed with a clamping rod.

[0039] In a surface grinding and polishing device for the production and processing of hardware tableware according to the present invention, optionally, a guide groove is provided on the inner side of the second frame, and the end of the clamping rod is slidably disposed inside the guide groove.

[0040] This invention also provides a method for surface polishing in the production and processing of metal tableware. The method involves polishing the metal tableware using the aforementioned surface polishing device, specifically including the following steps:

[0041] S1. The operator places the metal tableware on the feeding platform in sequence at the manual feeding station, and makes the handles of the metal tableware face the tooling fixture on the first clamp return conveyor mechanism.

[0042] S2. Control the piston rod of the second cylinder to retract, thereby moving the feeding platform to the first clamping unit. Then control the piston rod of the first cylinder to extend, thereby causing the first pressing locking rod to move downward. Then the piston rod of the sixth cylinder extends, causing the first pressing locking rod to move backward to the clamp, applying downward pressure to the handle of the clamp, thereby clamping the handle of the hardware tableware on the feeding platform. Then control the piston rods of the second cylinder, the sixth cylinder and the first cylinder to reset.

[0043] S3. Control the first six-axis robot in the first material picking and polishing mechanism to take out the tooling fixture holding the metal tableware from the feeding mechanism, and place the tooling fixture on the first polishing machine. Before polishing begins, the waxing mechanism on the first polishing machine waxes the polishing wheel, and then the first polishing machine polishes the head of the metal tableware.

[0044] S4. After the first polishing machine finishes polishing, the second six-axis robot removes the tooling fixture with the metal tableware from the first polishing machine and places it on the second polishing machine for polishing until the last polishing machine of the first material handling and polishing mechanism finishes polishing.

[0045] S5. After the first grinding and polishing machine of the first material picking and grinding mechanism finishes grinding, the last six-axis robot of the first material picking and grinding mechanism will take out the tooling fixture and move the head of the hardware tableware on the tooling fixture between the two clamping rods in the automatic clamp changing mechanism.

[0046] S6. The automatic clamping mechanism controls the piston rod of the fifth cylinder to extend and clamp the handle of the hardware tableware. The third and sixth axis robots open the tooling fixture and then place the empty tooling fixture on the first fixture return conveyor mechanism and transport it back to the feeding mechanism.

[0047] S7. Control the flipping motor to drive the second frame to flip at an appropriate angle, so that the head of the metal tableware faces the tooling fixture above the second clamp return conveyor mechanism. Control the piston rod of the fourth cylinder to retract, and move the flipping unit holding the metal tableware to the second clamping unit. At this time, control the piston rod of the third cylinder to extend, so that the second pressing locking rod moves downward. Then the piston rod of the seventh cylinder extends, so that the second pressing locking rod moves behind the clamp, and applies downward pressure to the handle of the clamp on the second clamp return conveyor mechanism, thereby clamping the head of the metal tableware on the flipping unit. Then control the third cylinder, the seventh cylinder and the fourth cylinder to reset.

[0048] S8. Control the first second six-axis robot in the second material picking and polishing mechanism to take out the tooling fixture holding the metal tableware from the automatic clamp changing mechanism, and place the tooling fixture on the first second polishing machine. Before polishing begins, the waxing mechanism on the second polishing machine waxes the polishing wheel, and then the second polishing machine polishes the handle of the metal tableware.

[0049] S9. After the first second polishing machine finishes polishing, the second second six-axis robot removes the tooling fixture with the metal tableware from the first second polishing machine and places it on the second second polishing machine for polishing. This process continues until the last second polishing machine of the second material handling and polishing mechanism finishes polishing.

[0050] S10. After the last second grinding and polishing machine of the second material picking and grinding mechanism finishes grinding, the last second six-axis robot takes the tooling fixture with the metal tableware from the last second grinding and polishing machine of the second material picking and grinding mechanism, and opens the clamp on the unloading table. Then the last second six-axis robot places the empty tooling fixture on the second fixture return conveyor mechanism and sends it back to the automatic clamp changing mechanism.

[0051] S11. Repeat steps S1-S10 to achieve automated assembly line operation.

[0052] Compared with the prior art, the beneficial effects of the present invention are:

[0053] This invention automatically fixes the tableware handle to the tooling fixture through a feeding mechanism, and the automatic clamp changing mechanism completes the tableware reversal and re-fixes the head, without the need for manual intervention throughout the process, greatly reducing repetitive labor.

[0054] The tooling fixtures are automatically returned to their initial positions via the first fixture return conveyor mechanism and the second fixture return conveyor mechanism, enabling the fixtures to be recycled without the need for manual handling and resetting.

[0055] The first grinding production line focuses on grinding the head of the tableware, while the second grinding production line focuses on grinding the handle. The automatic clamp changing mechanism achieves seamless connection, avoiding single-machine downtime and waiting.

[0056] Multiple sets of first material picking and grinding units and second material picking units are equidistantly distributed, which can simultaneously grade and grind multiple tableware, allowing for parallel processing of processes and significantly improving the overall utilization rate of the equipment.

[0057] The six-axis robot precisely picks up and places tableware, and with the stable clamping of the tooling fixture, the tableware is kept in a fixed position during the transfer process, reducing collision damage.

[0058] The polishing and waxing processes are directly transferred by robots within the same production line, avoiding the time cost and damage risk of transferring across equipment, and the process connection is more compact;

[0059] The feeding mechanism's feeding plate spacing can be adjusted via an adjustment slot to accommodate tableware of different lengths; the tooling fixture's multiple clamps can simultaneously hold multiple pieces of tableware, improving batch processing efficiency.

[0060] The dual-production-line grinding and polishing machine can flexibly set different grinding grits to meet diverse process requirements from coarse grinding to fine grinding, and is suitable for processing various hardware tableware such as spoons and forks.

[0061] In summary, this device completes the entire process, from manual feeding, automatic clamping, grading and polishing, waxing, to reversing treatment, secondary polishing, and finally finished product unloading, through the collaboration of mechanical structures and robots. This reduces human error, ensures the consistency of product surface finish, and the automated production line can operate continuously, significantly increasing output per unit time, making it suitable for large-scale production scenarios. Attached Figure Description

[0062] Figure 1 This is a schematic diagram of the surface grinding and polishing device for the production and processing of metal tableware according to the present invention;

[0063] Figure 2 This is a top view schematic diagram of a surface grinding and polishing device for the production and processing of metal tableware according to the present invention;

[0064] Figure 3 for Figure 1 A magnified structural diagram of part A in the diagram;

[0065] Figure 4 for Figure 2 A magnified structural diagram of part B in the diagram;

[0066] Figure 5 for Figure 4 A schematic diagram of the enlarged structure of part C in the diagram;

[0067] Figure 6 This is one of the structural schematic diagrams of the automatic clamp changing mechanism in a surface grinding and polishing device for the production and processing of hardware tableware according to the present invention;

[0068] Figure 7 This is a schematic diagram of the tooling fixture in a surface grinding and polishing device for the production and processing of hardware tableware according to the present invention;

[0069] Figure 8 This is a schematic diagram of the support component in a surface grinding and polishing device for the production and processing of metal tableware according to the present invention;

[0070] Figure 9 for Figure 6 A magnified structural diagram of part D in the diagram;

[0071] Figure 10 This is the second schematic diagram of the automatic clamp changing mechanism in a surface grinding and polishing device for the production and processing of hardware tableware according to the present invention;

[0072] Figure 11 This is a partial structural diagram of the automatic clamp changing mechanism in a surface grinding and polishing device for the production and processing of hardware tableware according to the present invention.

[0073] In the diagram: 100, First clamp return conveyor mechanism; 101, Second clamp return conveyor mechanism; 102, Conveyor frame; 103, Drive shaft; 104, Chain; 105, Drive motor;

[0074] 106. Support component; 1061. Horizontal plate; 1062. U-shaped support plate; 1063. Positioning groove; 1064. Bearing plate;

[0075] 107. Positioning assembly; 1071. Vertical plate; 1072. Positioning cylinder; 1073. Fixing block; 1074. Positioning rod;

[0076] 108. Tooling fixture; 1081. Clamp; 1082. Lower clamping plate; 1083. Fixing plate; 1084. Upper clamping plate; 1085. Support shaft;

[0077] 200. Feeding mechanism; 201. First base; 202. First upright; 203. First cylinder; 2031. First downward locking rod; 204. Support seat; 205. Support plate; 2051. Adjustment groove; 206. Discharge plate; 2061. Placement groove; 207. First slide rail; 208. Second cylinder; 209. Sixth cylinder; 210. First crossbeam;

[0078] 300. Automatic clamp changing mechanism; 301. Second base; 302. Second upright; 303. Third cylinder; 3031. Second pressing locking rod; 304. Tilting unit; 3041. First frame; 3042. Tilting motor; 3043. Second frame; 30431. Guide groove; 3044. Fifth cylinder; 3045. Clamping rod; 305. Fourth cylinder; 306. Second slide rail; 307. Second slider; 308. Seventh cylinder; 309. Second crossbeam;

[0079] 400, First six-axis robot; 401, Second six-axis robot; 500, First grinding and polishing machine; 501, Second grinding and polishing machine. Detailed Implementation

[0080] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0081] Example 1

[0082] Please see Figures 1 to 11 The present invention provides a technical solution:

[0083] A surface grinding and polishing device for manufacturing and processing metal tableware includes:

[0084] The first grinding production line includes a feeding mechanism 200, a first clamp return conveying mechanism 100, and a first material picking and grinding mechanism. The first material picking and grinding mechanism includes multiple sets of first material picking and grinding units, which are equidistantly arranged along the length direction of the first clamp return conveying mechanism 100.

[0085] The feeding mechanism 200 is used to fix the handle of the metal tableware to be polished onto the tooling fixture 108.

[0086] The first material handling and polishing unit includes a first six-axis robot 400 and a first polishing machine 500;

[0087] The first fixture return conveying mechanism 100 is used to convey the empty tooling fixture 108 back to the feeding mechanism 200;

[0088] The second grinding production line includes an automatic clamp changing mechanism 300, a second clamp return conveying mechanism 101, and a second material picking and grinding mechanism. The second material picking and grinding mechanism includes multiple sets of second material picking and grinding units, which are equidistantly arranged along the length direction of the second clamp return conveying mechanism 101.

[0089] The automatic clamp changing mechanism 300 is used to change the orientation of the metal tableware with the head polished, and then fix the head of the metal tableware onto the tooling fixture 108.

[0090] The second material handling and polishing unit includes a second six-axis robot 401 and a second polishing machine 501;

[0091] The second fixture return conveying mechanism 101 is used to transport the empty tooling fixture 108 back to the automatic clamp changing mechanism 300.

[0092] Each of the first polishing machine 500 and each of the second polishing machines 501 is equipped with a waxing structure.

[0093] The polishing machine with integrated waxing structure in this embodiment is existing technology and will not be described further here.

[0094] It should be noted that the multiple sets of first grinding and polishing machines 500 in the first material taking and grinding mechanism and the multiple sets of second grinding and polishing machines 501 in the second material taking and grinding mechanism can be set to multiple grinding grits to meet the requirements from coarse grinding to fine grinding.

[0095] Specifically, in this embodiment, the tooling fixture 108 includes a lower clamping plate 1082 and an upper clamping plate 1084. A plurality of clamps 1081 are provided on the lower clamping plate 1082. The plurality of clamps 1081 are equidistantly arranged along the length direction of the lower clamping plate 1082. The lower chuck of the clamp 1081 is fixedly connected to the lower clamping plate 1082, and the upper chuck of the clamp 1081 is fixedly connected to the upper clamping plate 1084. Both ends of the lower clamping plate 1082 are fixedly connected to a fixing plate 1083, and a support shaft 1085 is fixedly connected to one side of the fixing plate 1083.

[0096] The tooling fixture 108 forms a clamping element through the lower clamping plate 1082 and the upper clamping plate 1084. The equidistantly distributed clamps 1081 ensure that the clamping force of the lower clamping plate 1082 and the upper clamping plate 1084 is uniform and stable when clamping the metal tableware. When subjected to external pressure, the upper chuck with clamps 1081 drives the upper clamping plate 1084 to move downward, cooperating with the upper clamping plate 1084 to clamp the tableware. The fixing plates 1083 at both ends and the support shaft 1085 ensure the overall structural stability of the fixture. The support shaft 1085 cooperates with the U-shaped support plate 1062 of the conveying mechanism, so that the tooling fixture 108 can be stably placed on the conveyor line and move accurately to each processing station with the production line.

[0097] Specifically, in this embodiment, both the first fixture return conveying mechanism 100 and the second fixture return conveying mechanism 101 include a conveying frame 102. Both ends of the conveying frame 102 are rotatably mounted with a drive shaft 103. One end of the conveying frame 102 is fixedly mounted with a drive motor 105 for driving one of the drive shafts 103 to rotate. Both ends of the drive shaft 103 are fixedly connected with sprockets. The two sprockets located on the same side at both ends of the conveying frame 102 are connected by a chain 104. A support component 106 for supporting and limiting the tooling fixture 108 is fixedly mounted between the two chains 104.

[0098] The support assembly 106 includes a horizontal plate 1061, with U-shaped support plates 1062 fixedly connected to both ends of the horizontal plate 1061. A bearing plate 1064 corresponding to the clamp 1081 is fixedly connected to the U-shaped support plate 1062. After the support shaft 1085 is placed inside the U-shaped support plate 1062, the clamp 1081 can press on the bearing plate 1064 corresponding to it.

[0099] The conveying mechanism drives the transmission shaft 103 via a drive motor, which in turn drives the sprocket to rotate. The sprocket drives the chain 104 to rotate in a cycle, thereby moving the support assembly 106. The support shaft 1085 of the tooling fixture 108 is embedded inside the U-shaped support plate 1062 to achieve lateral limiting, and the clamp 1081 presses on the bearing plate 1064 to achieve longitudinal fixation, ensuring that the fixture does not shake during the conveying process.

[0100] Specifically, in this embodiment, positioning components 107 are provided at both ends of the conveyor frame 102. The positioning component 107 includes a vertical plate 1071, which is fixed to the side of the conveyor frame 102. A positioning cylinder 1072 is fixedly installed at the upper end of the vertical plate 1071. A fixing block 1073 is fixedly connected to the piston rod end of the positioning cylinder 1072. A positioning rod 1074 is fixedly connected to the side of the fixing block 1073 away from the positioning cylinder 1072. A positioning groove 1063 is opened on the outer side of the U-shaped support plate 1062, and the positioning rod 1074 can be inserted into the positioning groove 1063.

[0101] When the support assembly 106 moves to the operating positions at both ends of the conveyor frame 102, the piston rod of the positioning cylinder 1072 extends, pushing the positioning rod 1074 into the positioning groove 1063 of the U-shaped support plate 1062. The rigid support of the upright plate 1071 and the fixing block 1073 achieves precise positioning of the support assembly 106, preventing displacement during material handling and loading operations. After the operation is completed, the piston rod of the positioning cylinder 1072 retracts, the positioning rod 1074 disengages from the positioning groove 1063, and the support assembly 106 continues to move with the chain 104, ensuring continuous operation of the production line.

[0102] Specifically, in this embodiment, the feeding mechanism 200 includes a first base 201, on which a feeding platform and a first clamping unit are provided;

[0103] The material placement table is used to place the metal tableware to be polished;

[0104] The first clamping unit is used to press down the handle of the clamp 1081 on the first clamp return conveying mechanism 100, so that the tooling fixture 108 clamps the handle of the hardware tableware on the feeding table.

[0105] The first clamping unit includes a first upright 202, which is fixed on a first base 201. A first guide rail is fixedly installed on the top of the first upright 202. A first guide slider is slidably installed on the first guide rail. A first crossbeam 210 is fixedly installed on the top of the first guide slider. A first cylinder 203 is fixedly installed on the top of the first crossbeam 210. A first pressing locking rod 2031 is fixedly connected to the bottom of the piston rod of the first cylinder 203. A sixth cylinder 209 is fixedly installed on the top of the first upright 202. The end of the piston rod of the sixth cylinder 209 is fixedly connected to one side of the first crossbeam 210.

[0106] The feeding platform includes a support base 204, a first slider is fixedly installed at the bottom of the support base 204, a first slide rail 207 is fixedly installed on the first base 201, the first slider is slidably installed on the first slide rail 207, a support plate 205 is fixedly installed at both ends of the support base 204, a feeding plate 206 is installed on the support plate 205, there are two feeding plates 206, and each feeding plate 206 has a placement groove 2061 for limiting the position of the metal tableware. The handle of the metal tableware is placed in the placement groove 2061 on one feeding plate 206, and the head of the metal tableware is placed in the placement groove 2061 on the other feeding plate 206.

[0107] A second cylinder 208 is fixedly installed on the first base 201. The piston rod end of the second cylinder 208 is fixedly connected to one side of the support base 204. By controlling the retraction of the piston rod of the second cylinder 208, the feeding platform can be moved from the manual feeding position to the first clamping unit.

[0108] The operator places the tableware into the placement slot 2061 of the feeding plate 206 at the manual feeding station. The second cylinder 208 drives the support base 204 to slide along the first slide rail 207, moving the feeding platform below the first clamping unit. The first cylinder 203 pushes the first pressing locking rod 2031 downward, and then the piston rod of the sixth cylinder 209 extends, causing the first pressing locking rod 2031 to move behind the clamp 1081, pressing the handle of the clamp 1081 to clamp the tableware handle. After clamping is completed, the second cylinder 208, the sixth cylinder 209 and the first cylinder 203 reset, and the feeding platform returns to the feeding station, realizing the automatic fixing of the tableware handle, preparing for subsequent polishing.

[0109] In this embodiment, the top of the support plate 205 is provided with several adjustment slots 2051 for adjusting the distance between the two feeding plates 206, and the ends of the feeding plates 206 are inserted into the adjustment slots 2051.

[0110] By changing the position of the feeding plate 206 inserted into the adjustment groove 2051 of the support plate 205, the distance between the two feeding plates 206 can be flexibly adjusted to meet the placement needs of tableware of different lengths.

[0111] Specifically, in this embodiment, the automatic clamp changing mechanism 300 is disposed between the first clamp return conveying mechanism 100 and the second clamp return conveying mechanism 101;

[0112] The automatic clamp changing mechanism 300 includes a second base 301, on which a flipping unit 304 and a second clamping unit are provided;

[0113] The flipping unit 304 is used to reverse the direction of the metal tableware with the head polished and to turn the head of the metal tableware toward the tooling fixture 108 on the second fixture return conveying mechanism 101.

[0114] The second clamping unit is used to press down the handle of the clamp 1081 on the second clamp return conveying mechanism 101, so that the tooling fixture 108 clamps the head of the metal tableware on the flipping unit 304.

[0115] The second clamping unit includes a second upright 302, which is fixed on a second base 301. A second guide rail is fixedly installed on the top of the second upright 302. A second slider is slidably installed on the second guide rail. A second crossbeam 309 is fixedly installed on the second slider. A third cylinder 303 is fixedly installed on the top of the second crossbeam 309. A second pressing locking rod 3031 is fixedly installed at the bottom of the piston rod of the third cylinder 303. A seventh cylinder 308 is fixedly installed on the top of the second upright 302. The end of the piston rod of the seventh cylinder 308 is fixedly connected to one side of the second crossbeam 309.

[0116] The flipping unit 304 includes a first frame 3041, a second slider 307 fixedly mounted on the bottom of the first frame 3041, a second slide rail 306 fixedly mounted on the second base 301, the second slider 307 slidably mounted on the second slide rail 306, a clamping assembly rotatably mounted inside the first frame 3041, and a flipping motor 3042 for driving the clamping assembly to flip fixedly mounted on one side of the first frame 3041.

[0117] A fourth cylinder 305 is fixedly installed on the second base 301, and the piston rod end of the fourth cylinder 305 is fixedly connected to the bottom of the first frame 3041.

[0118] The tableware with its head polished is transferred by the third six-axis robot 402 to the flipping unit 304. After the clamping component clamps the tableware, the flipping motor 3042 drives the clamping component to flip at an appropriate angle, so that the head of the tableware faces the second clamping return conveyor mechanism 101. The fourth cylinder 305 drives the first frame 3041 to slide along the second slide rail 306, moving the tableware below the second clamping unit. The third cylinder 303 pushes the second pressing locking rod 3031 down, and then the piston rod of the seventh cylinder 308 extends, causing the second pressing locking rod 3031 to move behind the clamp 1081, pressing the handle of the clamp 1081 to clamp the head of the tableware. After the reversal and fixation are completed, all components are reset, realizing the transition of the tableware from head processing to handle processing.

[0119] Specifically, in this embodiment, the clamping assembly includes a second frame 3043, which is rotatably mounted on the inner side of the first frame 3041 via a rotating rod, and the rotating shaft of the flipping motor 3042 is fixedly connected to one of the rotating rods.

[0120] The top and bottom of the second frame 3043 are fixedly installed with a fifth cylinder 3044. The piston rod end of the fifth cylinder 3044 slides into the inner side of the second frame 3043 and is fixedly installed with a clamping rod 3045.

[0121] The clamping assembly achieves the flipping function through the rotatable connection between the second frame 3043 and the first frame 3041. The flipping motor 3042 drives the second frame 3043 to rotate via a rotating rod. When it is necessary to clamp the tableware, the piston rod of the fifth cylinder 3044 extends, pushing the clamping rod 3045 to clamp the tableware from the top and bottom sides, ensuring that the tableware will not fall off during the flipping process.

[0122] In this embodiment, a guide groove 30431 is provided on the inner side of the second frame 3043, and the end of the clamping rod 3045 is slidably disposed inside the guide groove 30431.

[0123] When the fifth cylinder 3044 drives the clamping rod 3045 to move, the end of the clamping rod 3045 slides along the guide groove 30431 of the second frame 3043. The guide groove 30431 restricts the movement trajectory of the clamping rod 3045, ensuring that it always moves in a straight line and avoiding misalignment due to force deviation. This structure improves the movement accuracy of the clamping assembly and ensures the positional stability of the tableware during flipping and transfer.

[0124] This invention also provides a method for surface polishing in the production and processing of metal tableware. The method involves polishing the metal tableware using the aforementioned surface polishing device, specifically including the following steps:

[0125] S1. The operator places the metal tableware on the feeding platform in sequence at the manual feeding station, and makes the handle of the metal tableware face the tooling fixture 108 on the first fixture return conveying mechanism 100.

[0126] S2. Control the piston rod of the second cylinder 208 to retract, thereby moving the feeding platform to the first clamping unit. Then control the piston rod of the first cylinder 203 to extend, thereby causing the first pressing locking rod 2031 to move downward. Then the piston rod of the sixth cylinder 209 extends, causing the first pressing locking rod 2031 to move behind the clamp 1081, applying downward pressure to the handle of the clamp 1081, thereby clamping the handle of the hardware tableware on the feeding platform. Then control the piston rods of the second cylinder 208, the sixth cylinder 209 and the first cylinder 203 to reset.

[0127] S3. Control the first six-axis robot 400 in the first material picking and polishing mechanism to take out the tooling fixture 108 holding the metal tableware from the feeding mechanism 200, and place the tooling fixture 108 on the first first polishing machine 500. Before polishing begins, the waxing mechanism on the first polishing machine 500 waxes the polishing wheel, and then the first polishing machine 500 polishes the head of the metal tableware.

[0128] S4. After the first polishing machine 500 finishes polishing, the second six-axis robot 400 removes the tooling fixture 108 with the metal tableware from the first polishing machine 500 and places it on the second polishing machine 500 for polishing until the last polishing machine 500 of the first material handling and polishing mechanism finishes polishing.

[0129] After the first grinding and polishing machine 500 of the first material picking and grinding mechanism finishes grinding, the last six-axis robot 400 of the first material picking and grinding mechanism takes out the tooling fixture 108 and moves the head of the metal tableware on the tooling fixture 108 between the two clamping rods 3045 in the automatic clamp changing mechanism.

[0130] S6. The automatic clamping mechanism 300 controls the piston rod of the fifth cylinder 3044 to extend and clamp the handle of the hardware tableware. The third six-axis robot 402 performs an opening operation on the tooling fixture 108. Then, the third six-axis robot 402 places the empty tooling fixture 108 on the first fixture return conveying mechanism 100 and conveys it back to the feeding mechanism 200.

[0131] S7. Control the flipping motor 3042 to drive the second frame 3043 to flip at an appropriate angle, so that the head of the metal tableware faces the tooling fixture 108 above the second clamp return conveying mechanism 101. Control the piston rod of the fourth cylinder 305 to retract, and move the flipping unit 304 holding the metal tableware to the second clamping unit. At this time, control the piston rod of the third cylinder 303 to extend, so that the second pressing locking rod 3031 moves downward. Then the piston rod of the seventh cylinder 308 extends, so that the second pressing locking rod 3031 moves behind the clamp 1081, and applies downward pressure to the handle of the clamp 1081 on the second clamp return conveying mechanism 101, thereby clamping the head of the metal tableware on the flipping unit 304. Then control the third cylinder 303, the seventh cylinder 308 and the fourth cylinder 305 to reset.

[0132] S8. Control the first second six-axis robot 401 in the second material picking and polishing mechanism to take out the tooling fixture 108 holding the metal tableware from the automatic clamp changing mechanism 300, and place the tooling fixture 108 on the first second polishing machine 501. Before polishing begins, the waxing mechanism on the second polishing machine 501 waxes the polishing wheel, and then the second polishing machine 501 polishes the handle of the metal tableware.

[0133] S9. After the first second polishing machine 501 finishes polishing, the second second six-axis robot 401 removes the tooling fixture 108 with the metal tableware from the first second polishing machine 501 and places it on the second second polishing machine 501 for polishing. This process continues until the last second polishing machine 501 of the second material handling and polishing mechanism finishes polishing.

[0134] S10. After the last second grinding and polishing machine 501 of the second material picking and grinding mechanism finishes grinding, the last second six-axis robot 401 removes the tooling fixture 108 with the metal tableware from the last second grinding and polishing machine 501 of the second material picking and grinding mechanism, and opens the clamp on the unloading table. Then the last second six-axis robot 401 places the empty tooling fixture 108 on the second fixture return conveying mechanism 101 and conveys it back to the automatic clamp changing mechanism 300.

[0135] S11. Repeat steps S1-S10 to achieve automated assembly line operation.

[0136] All parts not described in this invention are the same as or can be implemented using existing technology. Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A surface grinding and polishing device for the production and processing of metal tableware, characterized in that, include: The first grinding production line includes a feeding mechanism (200), a first clamp return conveying mechanism (100), and a first material picking grinding mechanism. The first material picking grinding mechanism includes multiple sets of first material picking grinding units, which are equidistantly arranged along the length direction of the first clamp return conveying mechanism (100). The feeding mechanism (200) is used to fix the handle of the metal tableware to be polished onto the tooling fixture (108); The first material handling and polishing unit includes a first six-axis robot (400) and a first polishing machine (500); The first fixture return conveying mechanism (100) is used to convey the empty tooling fixture (108) back to the loading mechanism (200); The second grinding production line includes an automatic clamp changing mechanism (300), a second clamp return conveying mechanism (101), and a second material picking and grinding mechanism. The second material picking and grinding mechanism includes multiple sets of second material picking and grinding units, which are equidistantly arranged along the length direction of the second clamp return conveying mechanism (101). The automatic clamp changing mechanism (300) is used to change the orientation of the metal tableware with the head polished, and then fix the head of the metal tableware onto the tooling fixture (108). The second material handling and polishing unit includes a second six-axis robot (401) and a second polishing machine (501); The second fixture return conveying mechanism (101) is used to convey the empty tooling fixture (108) back to the automatic fixture changing mechanism (300); Each of the first polishing machine (500) and each of the second polishing machines (501) is equipped with a waxing structure.

2. The surface grinding and polishing device for hardware tableware production and processing according to claim 1, characterized in that: The tooling fixture (108) includes a lower clamping plate (1082) and an upper clamping plate (1084). A plurality of clamps (1081) are provided on the lower clamping plate (1082). The plurality of clamps (1081) are equidistantly arranged along the length direction of the lower clamping plate (1082). The lower chuck of the clamp (1081) is fixedly connected to the lower clamping plate (1082), and the upper chuck of the clamp (1081) is fixedly connected to the upper clamping plate (1084). Fixed plates (1083) are fixedly connected to both ends of the lower clamping plate (1082), and a support shaft (1085) is fixedly connected to one side of the fixed plate (1083).

3. The surface grinding and polishing device for hardware tableware production and processing according to claim 2, characterized in that: Both the first fixture return conveying mechanism (100) and the second fixture return conveying mechanism (101) include a conveying frame (102). Both ends of the conveying frame (102) are rotatably mounted with a drive shaft (103). One end of the conveying frame (102) is fixedly mounted with a drive motor (105) for driving one of the drive shafts (103) to rotate. Both ends of the drive shaft (103) are fixedly connected with sprockets. The two sprockets located on the same side of both ends of the conveying frame (102) are connected by a chain (104). A support assembly (106) for supporting and limiting the tooling fixture (108) is fixedly mounted between the two chains (104). The support assembly (106) includes a horizontal plate (1061), and U-shaped support plates (1062) are fixedly connected to both ends of the horizontal plate (1061). A bearing plate (1064) corresponding to the clamp (1081) is fixedly connected to the U-shaped support plate (1062). After the support shaft (1085) is placed inside the U-shaped support plate (1062), the clamp (1081) can press on the bearing plate (1064) corresponding to it.

4. The surface grinding and polishing device for hardware tableware production and processing according to claim 3, characterized in that: Positioning components (107) are provided at both ends of the conveyor frame (102). The positioning components (107) include a vertical plate (1071), which is fixed to the side of the conveyor frame (102). A positioning cylinder (1072) is fixedly installed at the upper end of the vertical plate (1071). A fixing block (1073) is fixedly connected to the piston rod end of the positioning cylinder (1072). A positioning rod (1074) is fixedly connected to the side of the fixing block (1073) away from the positioning cylinder (1072). A positioning groove (1063) is opened on the outer side of the U-shaped support plate (1062), and the positioning rod (1074) can be inserted into the positioning groove (1063).

5. The surface grinding and polishing device for metal tableware production and processing according to claim 1, characterized in that: The feeding mechanism (200) includes a first base (201), on which a feeding platform and a first clamping unit are provided; The feeding platform is used to place the metal tableware to be polished; The first clamping unit is used to press down the handle of the clamp (1081) on the first clamp return conveying mechanism (100), so that the tooling fixture (108) clamps the handle of the hardware tableware on the feeding table; The first clamping unit includes a first upright (202), which is fixed on the first base (201). A first guide rail is fixedly installed on the top of the first upright (202), and a first guide slider is slidably installed on the first guide rail. A first crossbeam (210) is fixedly installed on the top of the first guide slider. A first cylinder (203) is fixedly installed on the top of the first crossbeam (210). A first pressing locking rod (2031) is fixedly connected to the bottom of the piston rod of the first cylinder (203). A sixth cylinder (209) is fixedly installed on the top of the first upright (202), and the end of the piston rod of the sixth cylinder (209) is fixedly connected to one side of the first crossbeam (210). The feeding platform includes a support base (204), a first slider is fixedly installed at the bottom of the support base (204), a first slide rail (207) is fixedly installed on the first base (201), the first slider is slidably installed on the first slide rail (207), a support plate (205) is fixedly installed at both ends of the support base (204), a feeding plate (206) is installed on the support plate (205), there are two feeding plates (206), and each of the two feeding plates (206) is provided with a placement groove (2061) for limiting the position of the metal tableware. The handle of the metal tableware is placed in the placement groove (2061) on one of the feeding plates (206), and the head of the metal tableware is placed in the placement groove (2061) on the other feeding plate (206). A second cylinder (208) is fixedly installed on the first base (201). The piston rod end of the second cylinder (208) is fixedly connected to one side of the support base (204). By controlling the retraction of the piston rod of the second cylinder (208), the feeding platform can be moved from the manual feeding station to the first clamping unit.

6. The surface grinding and polishing device for hardware tableware production and processing according to claim 5, characterized in that: The top of the support plate (205) is provided with several adjustment grooves (2051) for adjusting the distance between the two feeding plates (206), and the ends of the feeding plates (206) are inserted into the adjustment grooves (2051).

7. The surface grinding and polishing device for hardware tableware production and processing according to claim 1, characterized in that: The automatic clamp changing mechanism (300) is disposed between the first clamp return conveying mechanism (100) and the second clamp return conveying mechanism (101); The automatic clamp changing mechanism (300) includes a second base (301), on which a flipping unit (304) and a second clamping unit are provided; The flipping unit (304) is used to change the orientation of the metal tableware with the head polished and to turn the head of the metal tableware toward the tooling fixture (108) on the second fixture return conveying mechanism (101). The second clamping unit is used to press down the handle of the clamp (1081) on the second clamp return conveying mechanism (101), so that the tooling fixture (108) clamps the head of the metal tableware on the flipping unit (304); The second clamping unit includes a second upright (302), which is fixed on the second base (301). A second guide rail is fixedly installed on the top of the second upright (302). A second slider is slidably installed on the second guide rail. A second crossbeam (309) is fixedly installed on the second slider. A third cylinder (303) is fixedly installed on the top of the second crossbeam (309). A second pressing locking rod (3031) is fixedly installed at the bottom of the piston rod of the third cylinder (303). A seventh cylinder (308) is fixedly installed on the top of the second upright (302). The end of the piston rod of the seventh cylinder (308) is fixedly connected to one side of the second crossbeam (309). The flipping unit (304) includes a first frame (3041), a second slider (307) is fixedly installed at the bottom of the first frame (3041), a second slide rail (306) is fixedly installed on the second base (301), the second slider (307) is slidably installed on the second slide rail (306), a clamping assembly is rotatably installed inside the first frame (3041), and a flipping motor (3042) for driving the clamping assembly to flip is fixedly installed on one side of the first frame (3041). A fourth cylinder (305) is fixedly installed on the second base (301), and the piston rod end of the fourth cylinder (305) is fixedly connected to the bottom of the first frame (3041).

8. The surface grinding and polishing device for hardware tableware production and processing according to claim 7, characterized in that: The clamping assembly includes a second frame (3043), which is rotatably mounted inside the first frame (3041) via a rotating rod, and the rotating shaft of the flipping motor (3042) is fixedly connected to one of the rotating rods; The top and bottom of the second frame (3043) are fixedly installed with a fifth cylinder (3044), and the piston rod end of the fifth cylinder (3044) slides into the inner side of the second frame (3043) and is then fixedly installed with a clamping rod (3045).

9. A surface grinding and polishing device for hardware tableware production and processing according to claim 8, characterized in that: The second frame (3043) has a guide groove (30431) on its inner side, and the end of the clamping rod (3045) is slidably disposed inside the guide groove (30431).

10. A method for surface grinding and polishing of metal tableware during production and processing, comprising using a surface grinding and polishing apparatus for metal tableware during production and processing as described in any one of claims 1-9 to grind and polish the metal tableware, characterized in that: Specifically, the following steps are included: S1. The operator places the metal tableware on the feeding platform in sequence at the manual feeding station, and makes the handle of the metal tableware face the tooling fixture (108) on the first fixture return conveying mechanism (100). S2. Control the piston rod of the second cylinder (208) to retract, thereby moving the feeding platform to the first clamping unit. Then control the piston rod of the first cylinder (203) to extend, thereby causing the first pressing locking rod (2031) to move downward. Then the piston rod of the sixth cylinder (209) extends, causing the first pressing locking rod (2031) to move behind the clamp (1081) and apply downward pressure to the handle of the clamp (1081), thereby clamping the handle of the hardware tableware on the feeding platform. Then control the piston rods of the second cylinder (208), the sixth cylinder (209) and the first cylinder (203) to reset. S3. Control the first six-axis robot (400) in the first material picking and polishing mechanism to take out the tooling fixture (108) holding the metal tableware from the feeding mechanism (200), and place the tooling fixture (108) on the first first polishing machine (500). Before polishing begins, the polishing wheel is waxed by the waxing mechanism on the first polishing machine (500), and then the head of the metal tableware is polished by the first polishing machine (500). S4. After the first polishing machine (500) finishes polishing, the second first six-axis robot (400) removes the tooling fixture (108) with the metal tableware from the first first polishing machine (500) and places it on the second first polishing machine (500) for polishing until the last first polishing machine (500) of the first material picking and polishing mechanism finishes polishing. S5. After the last first grinding and polishing machine (500) of the first material picking and grinding mechanism finishes grinding, the last six-axis robot (400) of the first material picking and grinding mechanism takes out the tooling fixture (108) and moves the head of the hardware tableware on the tooling fixture (108) between the two clamping rods (3045) in the automatic clamp changing mechanism. S6. The automatic clamping mechanism (300) controls the piston rod of the fifth cylinder (3044) to extend and clamp the handle of the hardware tableware. The third six-axis robot (402) performs the clamping operation on the tooling fixture (108). Then, the third six-axis robot (402) places the empty tooling fixture (108) on the first fixture return conveying mechanism (100) and conveys it back to the feeding mechanism (200). S7. Control the flipping motor (3042) to drive the second frame (3043) to flip at an appropriate angle, so that the head of the metal tableware faces the tooling fixture (108) above the second clamp return conveying mechanism (101). Control the piston rod of the fourth cylinder (305) to retract, and move the flipping unit (304) holding the metal tableware to the second clamping unit. At this time, control the piston rod of the third cylinder (303) to extend, so that the second pressing locking rod (3031) moves downward. Then the piston rod of the seventh cylinder (308) extends, so that the second pressing locking rod (3031) moves behind the clamp (1081) and applies downward pressure to the handle of the clamp (1081) on the second clamp return conveying mechanism (101), thereby clamping the head of the metal tableware on the flipping unit (304). Then control the third cylinder (303), the seventh cylinder (308) and the fourth cylinder (305) to reset. S8. Control the first second six-axis robot (401) in the second material picking and polishing mechanism to take out the tooling fixture (108) holding the metal tableware from the automatic clamp changing mechanism (300), and place the tooling fixture (108) on the first second polishing machine (501). Before polishing begins, the waxing mechanism on the second polishing machine (501) waxes the polishing wheel, and then the second polishing machine (501) polishes the handle of the metal tableware. S9. After the first second polishing machine (501) finishes polishing, the second second six-axis robot (401) removes the tooling fixture (108) with the metal tableware from the first second polishing machine (501) and places it on the second second polishing machine (501) for polishing. This process continues until the last second polishing machine (501) of the second material handling and polishing mechanism finishes polishing. S10. After the last second grinding and polishing machine (501) of the second material picking and grinding mechanism finishes grinding, the last second six-axis robot (401) takes the tooling fixture (108) with hardware tableware from the last second grinding and polishing machine (501) of the second material picking and grinding mechanism, and opens the clamp on the unloading table. Then the last second six-axis robot (401) places the empty tooling fixture (108) on the second fixture return conveying mechanism (101) and conveys it back to the automatic clamp changing mechanism (300). S11. Repeat steps S1-S10 to achieve automated assembly line operation.

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