A metal heat-insulating cup burr-free ring cutting device

Abstract

The present application relates to the technical field of metal product finishing, and discloses a metal vacuum cup burr-free ring cutting device with smooth cutouts, which comprises a base, a first support frame fixedly connected to the top of the base, a second support frame fixedly connected to the side of the base close to the first support frame, a ring-shaped plate fixedly connected to the end of the first support frame away from the base, a ring-shaped electric sliding rail fixedly connected to the side of the ring-shaped plate, a first sliding plate and a second sliding plate slidably connected to the inner part of the ring-shaped electric sliding rail through electric sliding blocks respectively, a laser cutting assembly fixedly connected to the side of the first sliding plate, and a connecting plate fixedly connected to the side of the first support frame; and a supporting device fixedly connected to the side of the ring-shaped plate. The metal vacuum cup burr-free ring cutting device with smooth cutouts can realize cooling of the cutting area and avoid blowing cooling gas directly to the laser cutting area.

Description

A burr-free circumferential cutting device for metal thermos cups with a smooth cut. Technical Field

[0001] This invention relates to the field of metal product finishing technology, specifically to a burr-free circumferential cutting device for metal thermos cups with a smooth cut. Background Technology

[0002] A thermos flask is generally a water-filled container made of ceramic or stainless steel with a vacuum layer. It has a lid that seals tightly, and the vacuum insulation layer slows down heat dissipation from the liquid inside, thus achieving the purpose of heat preservation. The thermos flask evolved from the thermos bottle, and its heat preservation principle is the same; it's just that people made the bottle into a cup for convenience. Metal thermos flasks typically consist of an inner liner, an outer shell, and a vacuum layer. A key step in the manufacturing process of the outer shell is cutting the cup body blank, formed by stamping and stretching, to a fixed length according to the design dimensions. One of the core steps in manufacturing metal thermos flasks is cutting long metal tubes to the appropriate length. Subsequent processes include assembling the inner and outer tubes, vacuuming, and welding the cup body to the bottom. The smoothness of the weld and the cleanliness of the cut are crucial to the sealing performance and heat preservation effect of the thermos flask. Precise cutting of the tube is also necessary when reworking defective products, making circumferential cutting an indispensable key process in thermos flask production, with strict requirements for the quality of the cut.

[0003] Existing devices, when performing laser cutting on the body of a thermos cup, directly blow cooling gas onto the laser cutting area to cool it down. However, this direct blowing of cooling gas onto the laser cutting area severely disrupts the precise airflow field within the cutting area, affecting the cutting process. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides: a burr-free circumferential cutting device for metal thermos cups with a smooth cut, comprising:

[0005] The base has a first support frame fixedly connected to its top, a second support frame fixedly connected to the side of the base near the first support frame, an annular plate fixedly connected to the end of the first support frame away from the base, an annular electric slide rail fixedly connected to one side of the annular plate, a first slide plate and a second slide plate slidably connected inside the annular electric slide rail via electric sliders, a laser cutting assembly fixedly connected to one side of the first slide plate, and a connecting plate fixedly connected to one side of the first support frame.

[0006] A support device, one end of which is fixedly connected to one side of the annular plate;

[0007] A grinding device, one side of which is fixedly connected to one side of the second sliding plate;

[0008] An auxiliary clamping device is fixedly connected to the top of the second support frame on its outer side;

[0009] The first support frame and the second support frame are each provided in two sets, and both sides of the connecting plate are fixedly connected to the first support frame;

[0010] The supporting device includes:

[0011] A limiting frame is provided, and a reinforcing frame is fixedly connected to the outside of the limiting frame by a bracket. A positioning plate is fixedly connected to the side of the limiting frame away from the reinforcing frame. A first electric telescopic rod is fixedly connected to the side of the positioning plate close to the limiting frame. Multiple sets of limiting frames are provided, and multiple sets of limiting frames are fixedly connected to each other by a connecting plate.

[0012] An arc-shaped heat-conducting plate has a positioning groove on one side and a movable plate fixedly connected to one side. When the movable plate moves, it causes the arc-shaped heat-conducting plate to expand outward until it contacts the inner wall of the steel pipe and presses against one side of the inner wall. Multiple sets of arc-shaped heat-conducting plates can be used to support the steel pipe, which can support and fix pipes of different diameters, improving the practicality of the device.

[0013] Preferably, the end of the reinforcing frame away from the limiting frame is fixedly connected to one side of the annular plate, the end of the movable plate away from the arc-shaped heat-conducting plate passes through the limiting frame and is slidably connected to the inner wall of the limiting frame, and the movable end of the first electric telescopic rod is fixedly connected to one side of the movable plate.

[0014] Preferably, the support device further includes a cooling device, the bottom of which is fixedly connected to one side of the connecting plate.

[0015] Preferably, the cooling device includes a cooling water tank. The outlet of the cooling water tank is connected to a water supply pipe via a water pump. The end of the water supply pipe away from the cooling water tank is connected to a drain pipe via an electronic valve. The top and bottom of the water supply pipe are both connected to a first corrugated pipe. A heat-conducting fin is fixedly connected to the end of the first corrugated pipe away from the water supply pipe. A return spring is fixedly connected to the side of the heat-conducting fin near the first corrugated pipe. The close contact between the arc-shaped heat-conducting plate and the pipe allows the heat generated in the cutting area to be quickly conducted to the arc-shaped heat-conducting plate. Then, the heat is carried away by the discharge of coolant through the opening of the electronic valve, thereby cooling the cutting area and avoiding direct blowing of cooling gas onto the laser cutting area.

[0016] Preferably, the bottom of the cooling water tank is fixedly connected to one side of the connecting plate, and the end of the return spring away from the heat-conducting fins is fixedly connected to the outer wall of the water supply pipe.

[0017] Preferably, the auxiliary clamping device includes an annular limiting plate. A second electric telescopic rod is fixedly connected to the outer side of the annular limiting plate via a bracket. A clamping plate is fixedly connected to the movable end of the second electric telescopic rod. The extension of the movable end of the second electric telescopic rod pushes the clamping plate to move. The clamping plate contacts the outer wall of the pipe and clamps the pipe against the arc-shaped heat-conducting plate, effectively improving the stability of the pipe during processing and ensuring close contact between the pipe and the arc-shaped heat-conducting plate.

[0018] Preferably, the second electric telescopic rod is provided in multiple sets and evenly distributed on the annular limiting plate. The outer side of the annular limiting plate is provided with a circular hole adapted to the second electric telescopic rod, and the second electric telescopic rod passes through the circular hole. The outer side of the annular limiting plate is fixedly connected to the top of the second support frame.

[0019] Preferably, the grinding device includes a fixed plate, one side of which is fixedly connected to one side of the second sliding plate, a third electric telescopic rod is fixedly connected to one side of the fixed plate, a push plate is fixedly connected to the movable end of the third electric telescopic rod, a grinding component is fixedly connected to the side of the push plate away from the third electric telescopic rod to grind the cutting area, and a dust collection device is fixedly connected to the outer side of the push plate through a bracket.

[0020] Preferably, the dust collection device includes a dustproof sleeve, with a rubber pad fixedly connected to the top of the dustproof sleeve. A suction pipe is connected through and fixedly connected to one side of the dustproof sleeve. The end of the suction pipe away from the dustproof sleeve is connected to a second corrugated pipe. The end of the second corrugated pipe away from the suction pipe is connected to a connecting pipe. The end of the connecting pipe away from the second corrugated pipe is connected to a collection box. The bottom of the collection box is connected to an air pump. The air pump draws away the gas inside the collection box, thereby drawing the dust generated in the grinding area from the suction pipe into the second corrugated pipe, and then discharging it into the collection box through the connecting pipe. This allows for the grinding of burrs generated at the cut and timely absorption of dust generated during grinding, preventing dust from spreading.

[0021] Preferably, the air intake end of the suction pump extends into the interior of the collection box and is equipped with a filter assembly. Two sets of suction pipes are provided, and the two sets of suction pipes are symmetrically distributed on both sides of the dustproof sleeve. The bottom of the dustproof sleeve is fixedly connected to the outside of the push plate through a bracket, and the outside of the collection box is fixedly connected to the side of the fixing plate.

[0022] This invention provides a burr-free circumferential cutting device for metal thermos cups, resulting in a smooth cut. It offers the following advantages:

[0023] 1. This burr-free circumferential cutting equipment for metal thermos cups with a smooth cut, through the installation of the support device, causes the movable plate to move outward and drive the arc-shaped heat-conducting plate until it contacts and presses against the inner wall of the steel pipe. Since there are multiple sets of arc-shaped heat-conducting plates, multiple sets of arc-shaped heat-conducting plates can be used to support the steel pipe, which can support and fix pipes of different diameters, improving the practicality of the device.

[0024] 2. This burr-free circumferential cutting equipment for metal thermos cups with a smooth cut utilizes a cooling device. The close contact between the arc-shaped heat-conducting plate and the fittings rapidly conducts the heat generated in the cutting area to the arc-shaped heat-conducting plate. Then, the heat is carried away by the discharge of coolant through the opening of the electronic valve, thus cooling the cutting area. This avoids directly blowing the cooling gas onto the laser cutting area, which would disrupt the precise airflow field within the cutting area and prevent the cooling gas from diluting the concentration of the auxiliary gas.

[0025] 3. This burr-free circumferential cutting equipment for metal thermos cups with a smooth cut utilizes a grinding device and a dust extraction device. An air pump draws away the gas inside the collection box, and then the dust generated in the grinding area is sucked into the second corrugated pipe through the dust extraction pipe, and then discharged into the collection box through the connecting pipe. This process can grind the burrs generated at the cut and absorb the dust generated during grinding in a timely manner, preventing dust from spreading.

[0026] 4. This burr-free circumferential cutting equipment for metal thermos cups with a smooth cut, through the installation of an auxiliary clamping device, the extension of the movable end of the second electric telescopic rod pushes the clamping plate to move, the clamping plate contacts the outer wall of the fitting and clamps the fitting onto the arc-shaped heat-conducting plate, effectively improving the stability of the fitting during processing, and also ensuring close contact between the fitting and the arc-shaped heat-conducting plate. Attached Figure Description

[0027] Figure 1 is a schematic diagram of the burr-free circumferential cutting device for metal thermos cups with a smooth cut according to the present invention.

[0028] Figure 2 is a schematic diagram of the structure of the annular plate of the present invention;

[0029] Figure 3 is a schematic diagram of the arc-shaped heat-conducting plate of the present invention;

[0030] Figure 4 is a schematic diagram of the positioning groove of the present invention;

[0031] Figure 5 is a schematic diagram of the limiting frame of the present invention;

[0032] Figure 6 is a schematic diagram of the water supply pipe of the present invention;

[0033] Figure 7 is a schematic diagram of the structure of the heat-conducting fins of the present invention;

[0034] Figure 8 is a schematic diagram of the structure of the annular limiting plate of the present invention;

[0035] Figure 9 is a schematic diagram of the structure of the fixing plate of the present invention;

[0036] Figure 10 is a schematic diagram of the internal structure of the dustproof sleeve of the present invention.

[0037] In the diagram: 1. Base; 2. First support frame; 3. Second support frame; 4. Annular plate; 5. Annular electric slide rail; 6. First sliding plate; 7. Second sliding plate; 8. Support device; 81. Limiting frame; 82. Reinforcing frame; 83. Positioning plate; 84. First electric telescopic rod; 85. Arc-shaped heat-conducting plate; 86. Positioning groove; 87. Connecting plate; 88. Movable plate; 89. Cooling device; 891. Cooling water tank; 892. Water supply pipe; 893. Electronic valve; 894. Drain pipe; 895. First corrugated pipe; 896. 897. Heat-conducting fins; 998. Return spring; 90. Grinding device; 91. Fixing plate; 92. Third electric telescopic rod; 93. Push plate; 94. Grinding assembly; 95. Dust collection device; 951. Dustproof sleeve; 952. Rubber pad; 953. Dust collection pipe; 954. Second corrugated pipe; 955. Connecting pipe; 956. Collection box; 957. Air pump; 10. Auxiliary tightening device; 101. Annular limiting plate; 102. Second electric telescopic rod; 103. Tightening plate; 11. Laser cutting assembly; 12. Connecting plate. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] In the first embodiment, please refer to Figures 1-8. This invention provides a technical solution: a burr-free circumferential cutting device for metal thermos cups with a smooth cut, comprising:

[0040] A base 1 is provided, and a first support frame 2 is fixedly connected to the top of the base 1. A second support frame 3 is fixedly connected to the side of the base 1 near the first support frame 2. An annular plate 4 is fixedly connected to the end of the first support frame 2 away from the base 1. An annular electric slide rail 5 is fixedly connected to one side of the annular plate 4. A first slide plate 6 and a second slide plate 7 are slidably connected inside the annular electric slide rail 5 through electric sliders. A laser cutting assembly 11 is fixedly connected to one side of the first slide plate 6. A connecting plate 12 is fixedly connected to one side of the first support frame 2.

[0041] Support device 8, one end of which is fixedly connected to one side of the annular plate 4;

[0042] Grinding device 9, one side of grinding device 9 is fixedly connected to one side of second slide plate 7;

[0043] The auxiliary clamping device 10 is fixedly connected to the top of the second support frame 3 on its outer side.

[0044] The first support frame 2 and the second support frame 3 are each provided with two sets, and both sides of the connecting plate 12 are fixedly connected to the first support frame 2.

[0045] The support device 8 includes:

[0046] The limiting frame 81 has a reinforcing frame 82 fixedly connected to its outer side by a bracket. A positioning plate 83 is fixedly connected to the side of the limiting frame 81 away from the reinforcing frame 82. A first electric telescopic rod 84 is fixedly connected to the side of the positioning plate 83 close to the limiting frame 81. Multiple sets of limiting frames 81 are provided, and multiple sets of limiting frames 81 are fixedly connected to each other by a connecting plate 87.

[0047] An arc-shaped heat-conducting plate 85 has a positioning groove 86 on one side, and a movable plate 88 is fixedly connected to one side of the arc-shaped heat-conducting plate 85.

[0048] The end of the reinforcing frame 82 away from the limiting frame 81 is fixedly connected to one side of the annular plate 4. The end of the movable plate 88 away from the arc-shaped heat-conducting plate 85 passes through the limiting frame 81 and is slidably connected to the inner wall of the limiting frame 81. The movable end of the first electric telescopic rod 84 is fixedly connected to one side of the movable plate 88.

[0049] The support device 8 also includes a cooling device 89, the bottom of which is fixedly connected to one side of the connecting plate 12.

[0050] The cooling device 89 includes a cooling water tank 891. The outlet of the cooling water tank 891 is connected to a water supply pipe 892 via a water pump. The end of the water supply pipe 892 away from the cooling water tank 891 is connected to a drain pipe 894 via an electronic valve 893. The top and bottom of the water supply pipe 892 are both connected to a first corrugated pipe 895. A heat-conducting fin 896 is fixedly connected to the end of the first corrugated pipe 895 away from the water supply pipe 892. A return spring 897 is fixedly connected to the side of the heat-conducting fin 896 near the first corrugated pipe 895.

[0051] The bottom of the cooling water tank 891 is fixedly connected to one side of the connecting plate 12, and the end of the return spring 897 away from the heat-conducting fins 896 is fixedly connected to the outer wall of the water supply pipe 892.

[0052] The auxiliary tightening device 10 includes an annular limiting plate 101. A second electric telescopic rod 102 is fixedly connected to the outer side of the annular limiting plate 101 via a bracket. A tightening plate 103 is fixedly connected to the movable end of the second electric telescopic rod 102.

[0053] Multiple sets of the second electric telescopic rod 102 are evenly distributed on the annular limiting plate 101. The outer side of the annular limiting plate 101 is provided with a circular hole that matches the second electric telescopic rod 102. The second electric telescopic rod 102 passes through the circular hole. The outer side of the annular limiting plate 101 is fixedly connected to the top of the second support frame 3.

[0054] In use, the worker places the stainless steel pipe to be cut onto the arc-shaped heat-conducting plate 85, and then activates the first electric telescopic rod 84. The movable end of the first electric telescopic rod 84 drives the movable plate 88 to slide inside the limiting frame 81. When the movable plate 88 moves, it drives the arc-shaped heat-conducting plate 85 to expand outward until the arc-shaped heat-conducting plate 85 contacts the inner wall of the steel pipe and presses against one side of the inner wall. Since there are multiple sets of arc-shaped heat-conducting plates 85, multiple sets of arc-shaped heat-conducting plates 85 can be used to support the steel pipe, which can support and fix pipes of different diameters, improving the practicality of the device. After fixing the pipe, the laser cutting assembly 11 can be activated to cut the pipe. Then, the annular electric slide rail 5 is activated. The annular electric slide rail 5 drives the first slide plate 6 and the laser cutting assembly 11 to rotate through the internal electric slider. The laser cutting assembly 11 can then rotate around the axis of the pipe and perform circumferential cutting on the pipe.

[0055] The second electric telescopic rod 102 is activated, and the extension of the movable end of the second electric telescopic rod 102 pushes the top plate 103 to move. The top plate 103 contacts the outer wall of the pipe and presses the pipe against the arc-shaped heat-conducting plate 85, which effectively improves the stability of the pipe during processing and ensures close contact between the pipe and the arc-shaped heat-conducting plate 85.

[0056] When the laser cutting assembly 11 cuts the pipe, the water pump on one side of the cooling water tank 891 is turned on, and the coolant stored in the cooling water tank 891 is discharged from the water pipe 892 into the first corrugated pipe 895. The coolant entering the first corrugated pipe 895 cools the heat-conducting fins 896. Since the heat-conducting fins 896 and the arc-shaped heat-conducting plate 85 are always in close contact, the heat generated in the cutting area is quickly conducted to the arc-shaped heat-conducting plate 85 through the close contact between the arc-shaped heat-conducting plate 85 and the pipe. Then, the heat is carried away by the discharge of the coolant through the opening of the electronic valve 893, thereby cooling the cutting area. This avoids directly blowing the cooling gas into the laser cutting area, which would disrupt the precise airflow field in the cutting area and prevent the cooling gas from diluting the concentration of the auxiliary gas.

[0057] In the second embodiment, please refer to Figures 1-10. The present invention provides a technical solution: Based on the first embodiment, the grinding device 9 includes a fixed plate 91. One side of the fixed plate 91 is fixedly connected to one side of the second sliding plate 7. A third electric telescopic rod 92 is fixedly connected to one side of the fixed plate 91. A push plate 93 is fixedly connected to the movable end of the third electric telescopic rod 92. A grinding component 94 is fixedly connected to the side of the push plate 93 away from the third electric telescopic rod 92. A dust collection device 95 is fixedly connected to the outer side of the push plate 93 through a bracket.

[0058] The vacuuming device 95 includes a dustproof sleeve 951, a rubber pad 952 fixedly connected to the top of the dustproof sleeve 951, a suction pipe 953 passing through and fixedly connected to one side of the dustproof sleeve 951, a second corrugated pipe 954 connected to the end of the suction pipe 953 away from the dustproof sleeve 951, a connecting pipe 955 connected to the end of the second corrugated pipe 954 away from the suction pipe 953, a collection box 956 connected to the end of the connecting pipe 955 away from the second corrugated pipe 954, and an air pump 957 connected to the bottom of the collection box 956.

[0059] The air intake end of the suction pump 957 extends into the interior of the collection box 956 and is equipped with a filter assembly. There are two sets of suction pipes 953, which are symmetrically distributed on both sides of the dustproof sleeve 951. The bottom of the dustproof sleeve 951 is fixedly connected to the outside of the push plate 93 through a bracket. The outside of the collection box 956 is fixedly connected to the side of the fixing plate 91.

[0060] In use, the third electric telescopic rod 92 is activated, which drives the push plate 93 to move. When the push plate 93 moves, it drives the grinding component 94 to approach the pipe cutting area. Then, the grinding component 94 is activated to grind the cutting area. At this time, the air suction pump 957 is activated to draw away the gas inside the collection box 956. The dust generated in the grinding area is then sucked into the second corrugated pipe 954 through the suction pipe 953 and discharged into the collection box 956 through the connecting pipe 955. This process can grind the burrs generated at the cut and absorb the dust generated during grinding in time to prevent dust from spreading.

[0061] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A burr-free circumferential cutting device for metal thermos cups with a smooth cut, characterized in that, include: A base (1) is fixedly connected to a first support frame (2) at its top. A second support frame (3) is fixedly connected to the side of the base (1) near the first support frame (2). An annular plate (4) is fixedly connected to the end of the first support frame (2) away from the base (1). An annular electric slide rail (5) is fixedly connected to one side of the annular plate (4). A first slide plate (6) and a second slide plate (7) are slidably connected inside the annular electric slide rail (5) via electric sliders. A laser cutting assembly (11) is fixedly connected to one side of the first slide plate (6). A connecting plate (12) is fixedly connected to one side of the first support frame (2). A support device (8) is fixedly connected to one side of the annular plate (4). A grinding device (9) is fixedly connected to one side of the second slide plate (7). An auxiliary clamping device (10) is fixedly connected to the first support frame (2). The outer side of the device (10) is fixedly connected to the top of the second support frame (3); the first support frame (2) and the second support frame (3) are each provided with two sets, and both sides of the connecting plate (12) are fixedly connected to the first support frame (2); wherein, the support device (8) includes: a limiting frame (81), the outer side of the limiting frame (81) is fixedly connected to a reinforcing frame (82) by a bracket, the side of the limiting frame (81) away from the reinforcing frame (82) is fixedly connected to a positioning plate (83), the side of the positioning plate (83) close to the limiting frame (81) is fixedly connected to a first electric telescopic rod (84), the limiting frame (81) is provided with multiple sets, and the multiple sets of the limiting frames (81) are fixedly connected to each other by a connecting plate (87); an arc-shaped heat-conducting plate (85), one side of the arc-shaped heat-conducting plate (85) is provided with a positioning groove (86), and one side of the arc-shaped heat-conducting plate (85) is fixedly connected to a movable plate (88).

2. The burr-free circumferential cutting device for metal thermos cups with a smooth cut according to claim 1, characterized in that: The end of the reinforcing frame (82) away from the limiting frame (81) is fixedly connected to one side of the annular plate (4). The end of the movable plate (88) away from the arc-shaped heat-conducting plate (85) passes through the limiting frame (81) and is slidably connected to the inner wall of the limiting frame (81). The movable end of the first electric telescopic rod (84) is fixedly connected to one side of the movable plate (88).

3. The burr-free circumferential cutting device for metal thermos cups with a smooth cut according to claim 1, characterized in that: The support device (8) also includes a cooling device (89), the bottom of which is fixedly connected to one side of the connecting plate (12).

4. The burr-free circumferential cutting device for metal thermos cups with a smooth cut according to claim 3, characterized in that: The cooling device (89) includes a cooling water tank (891). The outlet of the cooling water tank (891) is connected to a water supply pipe (892) via a water pump. The end of the water supply pipe (892) away from the cooling water tank (891) is connected to a drain pipe (894) via an electronic valve (893). The top and bottom of the water supply pipe (892) are both connected to a first corrugated pipe (895). The end of the first corrugated pipe (895) away from the water supply pipe (892) is fixedly connected to a heat-conducting fin (896). A return spring (897) is fixedly connected to the side of the heat-conducting fin (896) near the first corrugated pipe (895).

5. The burr-free circumferential cutting device for metal thermos cups with a smooth cut according to claim 4, characterized in that: The bottom of the cooling water tank (891) is fixedly connected to one side of the connecting plate (12), and the end of the return spring (897) away from the heat-conducting fins (896) is fixedly connected to the outer wall of the water supply pipe (892).

6. The burr-free circumferential cutting device for metal thermos cups with a smooth cut according to claim 1, characterized in that: The auxiliary tightening device (10) includes an annular limiting plate (101), and a second electric telescopic rod (102) is fixedly connected to the outer side of the annular limiting plate (101) by a bracket. The movable end of the second electric telescopic rod (102) is fixedly connected to a tightening plate (103).

7. The burr-free circumferential cutting device for metal thermos cups with a smooth cut according to claim 6, characterized in that: The second electric telescopic rod (102) is provided in multiple sets and evenly distributed on the annular limiting plate (101). The outer side of the annular limiting plate (101) is provided with a circular hole that is adapted to the second electric telescopic rod (102). The second electric telescopic rod (102) passes through the circular hole. The outer side of the annular limiting plate (101) is fixedly connected to the top of the second support frame (3).

8. The burr-free circumferential cutting device for metal thermos cups with a smooth cut according to claim 1, characterized in that: The polishing device (9) includes a fixed plate (91), one side of which is fixedly connected to one side of the second sliding plate (7). A third electric telescopic rod (92) is fixedly connected to one side of the fixed plate (91). A push plate (93) is fixedly connected to the movable end of the third electric telescopic rod (92). A polishing assembly (94) is fixedly connected to the side of the push plate (93) away from the third electric telescopic rod (92). A dust collection device (95) is fixedly connected to the outer side of the push plate (93) through a bracket.

9. The burr-free circumferential cutting device for metal thermos cups with a smooth cut according to claim 8, characterized in that: The dust collection device (95) includes a dustproof sleeve (951), a rubber pad (952) is fixedly connected to the top of the dustproof sleeve (951), a suction pipe (953) is connected through and fixedly connected to one side of the dustproof sleeve (951), a second corrugated pipe (954) is connected to the end of the suction pipe (953) away from the dustproof sleeve (951), a connecting pipe (955) is connected to the end of the second corrugated pipe (954) away from the suction pipe (953), a collection box (956) is connected to the end of the connecting pipe (955) away from the second corrugated pipe (954), and an air pump (957) is connected to the bottom of the collection box (956).

10. A burr-free circumferential cutting device for metal thermos cups with a smooth cut according to claim 9, characterized in that: The air intake end of the suction pump (957) extends into the interior of the collection box (956) and is equipped with a filter assembly. There are two sets of suction pipes (953), which are symmetrically distributed on both sides of the dustproof sleeve (951). The bottom of the dustproof sleeve (951) is fixedly connected to the outside of the push plate (93) through a bracket. The outside of the collection box (956) is fixedly connected to the side of the fixing plate (91).

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