Positioning, clamping and conveying machine for hardware cutlery polishing production line

Abstract

The utility model relates to hardware tableware polishing technical field discloses a kind of positioning clamping conveyer of hardware tableware polishing production line, including first conveying mechanism and second conveying mechanism, first conveying mechanism includes feeding mechanism and first clamp backflow conveying mechanism;Feeding mechanism is used to fix the handle of the hardware tableware to be polished to tool clamp;First clamp backflow conveying mechanism is used to convey empty tool clamp back to feeding mechanism, and second conveying mechanism includes automatic change clamp mechanism and second clamp backflow conveying mechanism;Automatic change clamp mechanism is used to change direction for the hardware tableware with good head polishing, then the head of hardware tableware is fixed to tool clamp;Second clamp backflow conveying mechanism is used to convey empty tool clamp back to automatic change clamp mechanism, the utility model is fixed to tool clamp by feeding mechanism automatically utensil handle, and automatic change clamp mechanism completes utensil change direction and re-fix head, without manual intervention throughout, greatly reduce repetitive labor.

Description

Technical Field

[0001] This utility model relates to the field of metal tableware polishing technology, specifically to a positioning and clamping conveyor for a metal tableware polishing production line. 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 polishing: Each polishing and waxing process requires manual fixing of the tableware. After polishing one end, the fixture needs to be removed, the tableware turned around, and fixed again. This involves a lot of repetitive labor and is not suitable for automated production lines.

[0004] Therefore, we propose a positioning and clamping conveyor for a metal tableware polishing production line. Utility Model Content

[0005] The purpose of this utility model is to provide a positioning and clamping conveyor for a hardware tableware polishing production line, thereby solving or at least alleviating one or more of the above-mentioned problems and other problems existing in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a positioning and clamping conveyor for a hardware tableware polishing production line, comprising: The first conveying mechanism includes a feeding mechanism and a first clamp return conveying mechanism; the feeding mechanism is used to fix the handle of the metal tableware to be polished onto the tooling fixture; the first clamp return conveying mechanism is used to convey the empty tooling fixture back to the feeding mechanism. The second conveying mechanism includes an automatic clamp changing mechanism and a second clamp return conveying mechanism. The automatic clamp changing mechanism is used to change the direction of the polished metal tableware and then fix the head of the metal tableware onto the tooling fixture. The second clamp return conveying mechanism is used to transport the empty tooling fixture back to the automatic clamp changing mechanism. The automatic clamp changing mechanism is disposed between the first clamp return conveying mechanism and the second clamp return conveying mechanism; The automatic clamp changing mechanism includes a second base, on which a flipping unit and a second clamping unit are provided; The flipping unit is used to reverse the direction of the polished metal tableware and turn the head of the metal tableware toward the tooling fixture on the second clamp return conveying mechanism. 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; 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. 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. 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.

[0007] In a positioning and clamping conveyor of a hardware tableware polishing production line 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.

[0008] In the positioning and clamping conveyor of a hardware tableware polishing production line according to the present utility model, optionally, the first clamp return conveying mechanism and the second clamp return conveying mechanism both 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 installed between the two chains; 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.

[0009] In a positioning and clamping conveyor of a hardware tableware polishing production line 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.

[0010] In a positioning and clamping conveyor of a hardware tableware polishing production line according to the present utility model, the feeding mechanism may optionally include a first base, 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 on the first clamp return conveying mechanism, so that the tooling fixture clamps the handle of the metal tableware on the feeding table. 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. 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. 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.

[0011] In the positioning and clamping conveyor of a hardware tableware polishing production line 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.

[0012] In a positioning and clamping conveyor of a hardware tableware polishing production line according to the present invention, the clamping assembly includes a second frame, the second frame being rotatably mounted on the inner side of the first frame via a rotating rod, and the rotating shaft of the flipping motor being fixedly connected to one of the rotating rods. 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.

[0013] In a positioning and clamping conveyor of a hardware tableware polishing production line 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.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 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. The entire process requires no manual intervention and greatly reduces repetitive labor. The tooling fixtures are automatically returned to their initial positions via the first and second fixture return conveying mechanisms, enabling the fixtures to be recycled without the need for manual handling and resetting. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the positioning and clamping conveyor of a hardware tableware polishing production line according to the present invention. Figure 2 This is a top view of the positioning and clamping conveyor of a hardware tableware polishing production line according to the present invention. Figure 3 for Figure 1 A magnified structural diagram of part A in the diagram; Figure 4 for Figure 2 A schematic diagram of the enlarged structure of part B in the diagram; Figure 5 for Figure 4 A schematic diagram of the enlarged structure of part C in the diagram; Figure 6 This is one of the structural schematic diagrams of the automatic clamp changing mechanism in the positioning and clamping conveyor of a hardware tableware polishing production line according to this utility model; Figure 7 This is a schematic diagram of the tooling fixture in the positioning and clamping conveyor of a hardware tableware polishing production line according to the present invention. Figure 8 This is a schematic diagram of the support component in the positioning and clamping conveyor of a hardware tableware polishing production line according to the present invention. Figure 9 for Figure 6 A schematic diagram of the enlarged structure of part D in the diagram; Figure 10 This is the second schematic diagram of the automatic clamp changing mechanism in the positioning and clamping conveyor of a hardware tableware polishing production line according to this utility model; Figure 11 This is a partial structural diagram of the automatic clamp changing mechanism in the positioning and clamping conveyor of a hardware tableware polishing production line according to the present invention.

[0016] 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; 106. Support component; 1061. Horizontal plate; 1062. U-shaped support plate; 1063. Positioning groove; 1064. Bearing plate; 107. Positioning assembly; 1071. Vertical plate; 1072. Positioning cylinder; 1073. Fixing block; 1074. Positioning rod; 108. Tooling fixture; 1081. Clamp; 1082. Lower clamping plate; 1083. Fixing plate; 1084. Upper clamping plate; 1085. Support shaft; 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; 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. Detailed Implementation

[0017] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0018] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0019] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0020] In the description of this utility model, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating the connection relationship between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example

[0021] Please see Figures 1 to 11 This utility model provides a technical solution: A positioning and clamping conveyor for a hardware tableware polishing production line includes: The first conveying mechanism includes a feeding mechanism 200 and a 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 fixture return conveying mechanism 100 is used to convey the empty tooling fixture 108 back to the feeding mechanism 200; The second conveying mechanism includes an automatic clamp changing mechanism 300 and a second clamp return conveying mechanism 101. The automatic clamp changing mechanism 300 is used to change the direction of the polished metal tableware and then fix the head of the metal tableware onto the tooling fixture 108. The second fixture return conveying mechanism 101 is used to transport the empty tooling fixture 108 back to the automatic clamp changing mechanism 300.

[0022] Working Principle: In the metal tableware polishing production process, the first fixture return conveyor 100 first transports an empty fixture 108 to the loading mechanism 200. The worker places the metal tableware to be polished on the loading mechanism 200, which then actuates to fix the handle of the tableware onto the fixture 108. Subsequently, the robotic arm carrying the fixture 108 with the tableware handle leaves the loading mechanism 200 to enter the subsequent polishing process. Once the head of the tableware is polished, the robotic arm removes the fixture 108 and sends it to the automatic fixture changing mechanism 300. The automatic fixture changing mechanism 300 reverses its direction and fixes the head of the tableware onto an empty fixture 108 transported by the second fixture return conveyor 101. Afterwards, the tooling fixture 108 with the head fixed continues to be processed. Meanwhile, the empty tooling fixture 108 is transported back to the loading mechanism 200 by the first fixture return conveyor mechanism 100. After the handle of the hardware tableware is polished, the tooling fixture 108 is removed by the robot arm and moved to the unloading table for unloading. The empty tooling fixture 108 is then transported back to the automatic clamping mechanism 300 by the second fixture return conveyor mechanism 101, and the cycle continues.

[0023] 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.

[0024] The tooling fixture 108 is used to fix metal tableware. When it is necessary to fix the metal tableware, press down on the handle of the clamp 1081 to move the upper clamp 1084 relative to the lower clamp 1082, thereby clamping the metal tableware. Since the clamps 1081 are equidistant along the length of the lower clamp 1082, the clamping force on the metal tableware is more uniform, improving the stability of the clamping.

[0025] 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. 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.

[0026] The drive motor 105 drives the transmission shaft 103 to rotate, which in turn drives the sprocket to rotate, and the sprocket drives the chain 104 to move. The tooling fixture 108 is placed inside the U-shaped support plate 1062 via the support shaft 1085. At this time, the clamp 1081 presses on the bearing plate 1064 to support and limit the tooling fixture 108. During the movement of the chain 104, it drives the support assembly 106 and the tooling fixture 108 placed on it to move together, thereby realizing the return of the empty tooling fixture 108 to its corresponding loading mechanism 200 or automatic clamp changing mechanism 300.

[0027] 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.

[0028] When the support assembly 106 moves to the operating position at the end 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.

[0029] 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; The material placement table 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 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. 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. 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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; 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 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. 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 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. 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. 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.

[0034] The tableware with its head finished 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 downward, 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 fixing are completed, all components are reset, realizing the transition of the tableware from head processing to handle processing.

[0035] 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. 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] All parts not described in this utility model are the same as or can be implemented using existing technology. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A positioning and clamping conveyor for a metal tableware polishing production line, characterized in that, include: The first conveying mechanism includes a feeding mechanism (200) and a first clamp return conveying mechanism (100); the feeding mechanism (200) is used to fix the handle of the hardware tableware to be polished onto the tooling clamp (108); the first clamp return conveying mechanism (100) is used to convey the empty tooling clamp (108) back to the feeding mechanism (200). The second conveying mechanism comprises an automatic clamp changing mechanism (300) and a second clamp return conveying mechanism (101); the automatic clamp changing mechanism (300) is used to change the direction of the polished metal tableware and then fix the head of the metal tableware onto the tooling fixture (108); the second clamp return conveying mechanism (101) is used to convey the empty tooling fixture (108) back to the automatic clamp changing mechanism (300). 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 disposed; The flipping unit (304) is used to reverse the direction of the polished metal tableware and 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).

2. The positioning and clamping conveyor of a hardware tableware polishing production line 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 positioning and clamping conveyor of a hardware tableware polishing production line 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 at 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 positioning and clamping conveyor of a hardware tableware polishing production line 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 provided 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 positioning and clamping conveyor of a hardware tableware polishing production line 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 positioning and clamping conveyor of a hardware tableware polishing production line 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 positioning and clamping conveyor of a hardware tableware polishing production line according to claim 1, characterized in that: 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; The second frame (3043) is fixedly installed with a fifth cylinder (3044) at both the top and bottom. 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).

8. The positioning and clamping conveyor of a hardware tableware polishing production line according to claim 7, 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).

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