High-precision cutting equipment for ultrathin metal plates

Abstract

The invention discloses high-precision cutting equipment for ultrathin metal plates, and relates to the technical field of plate cutting. Through an accurate clamping and pressing mechanism, it can be guaranteed that a thin plate is always kept in a flat state in the cutting process, so that a laser cutting head can stably run along a preset track, and cutting errors caused by deformation of the plate are avoided; and a centrifugal force mechanism generated by rotating the tray is included, powder generated in the cutting process can be effectively taken away from a cutting area, and the powder is prevented from being accumulated on the surface of the plate. In the cutting process, powder is separated in time through cooperation of centrifugal force and the rotating tray, interference of the powder to the cutting quality is reduced, meanwhile, the cleanliness of the equipment is guaranteed, the later cleaning frequency is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sheet cutting, and specifically to a high-precision cutting device for ultra-thin metal sheets. Background Art

[0002] During the cutting process of thin sheets, the gravitational force of the sheet itself often causes the surface to be uneven, which directly affects the cutting accuracy. Especially when dealing with ultra-thin metal sheets, the sheet is light in weight and is significantly affected by the gravitational force, and is prone to sagging or bending. Such an uneven surface will cause the laser cutting head or other cutting tools to be unable to work precisely along the predetermined path, resulting in cutting errors and even cutting failures. In addition, the uneven surface will increase the difficulty of subsequent processing, and further leveling treatment may be required, wasting time and resources. Additionally, during the cutting process, due to the high-temperature action between the sheet and the laser cutting head, a large amount of powder and melt will be generated in the cutting area. These powders generated by cutting will affect the cutting accuracy. The accumulation of powder in the cutting area will interfere with the focusing of the laser beam, reduce the cutting quality, and increase the instability of cutting. Summary of the Invention

[0003] To overcome the defects of the above-mentioned prior art, the present invention provides the following technical solution: A high-precision cutting device for ultra-thin metal sheets, including a rotating plane. Two symmetrically arranged long grooves are provided in the radial direction of the rotating plane. Clamping strips are symmetrically arranged at the two long grooves. Each clamping strip is provided with a placement insertion groove. The clamping strips are slidably arranged on the upper surface of the rotating plane along the length direction of the long grooves. An extrusion plate is arranged in the placement insertion groove, and the extrusion plate is used for clamping the sheet inserted into the placement insertion groove. The lower surface of the rotating plane is fixed above the rotating tray in a suspended manner. Above the rotating plane, a top support ring is fixed above the support ring in a suspended manner. Two parallel first moving sliders are fixedly installed inside the top support ring. Second moving slider supports are slidably sleeved on both first moving sliders. Two parallel second moving sliders are fixedly installed between the two second moving slider supports. A laser welding head is slidably arranged on the two second moving sliders.

[0004] Preferably, two parallel downward sliders are also slidably installed on the clamping strip. The two downward sliders are fixedly matched with the placement insertion groove. A downward pressing beam strip is fixedly installed at one end of the two downward sliders away from the placement insertion groove.

[0005] Preferably, two parallel clamping counterweight support sliders are fixedly installed on the side surface of the clamping strip. A clamping counterweight is slidably arranged on the clamping counterweight support sliders. The clamping counterweight and the downward pressing beam strip are movably connected by a downward pressing connecting rod. The height of the lower surface of the downward pressing beam strip is higher than the height of the upper surface of the clamping counterweight, and the downward pressing connecting rod is inclined.

[0006] Preferably, two rack brackets arranged in parallel are fixedly installed on the lower surface of the rotating plane. Two racks symmetrical about the center origin of the rotating plane are slidably arranged between the two rack brackets. The two racks and the two clamping strips are fixedly matched through the long chute. The two racks are meshed and driven with each other through a linkage gear.

[0007] Preferably, a belt drive assembly for driving the laser welding head to slide on the second moving slide bar is rotatably arranged on the second moving slide bar support block; a tension spring is wound around each first moving slide bar, and both ends of the tension spring are fixedly matched with the top support ring and the second moving slide bar support block.

[0008] Preferably, an arch-shaped frame is fixed to one end of the two second moving slide bar support blocks away from the tension spring. A moving counterweight is fixed in the middle of the arch-shaped frame. The arch-shaped frame is slidably arranged on the top edge of the top support ring, and the arch-shaped frame is also slidably matched with the two first moving slide bars.

[0009] Preferably, the rotating tray is rotatably installed on the base. A toothed ring disc coaxial with the rotating tray is also rotatably installed on the base. The toothed ring disc and the rotating tray are fixedly matched through a rotating shaft. A driving disc bracket is also fixedly installed on the base, and a gear driving disc is rotatably installed on the driving disc bracket.

[0010] Preferably, at least two planetary gears meshing with the inner side of the toothed ring disc are rotatably installed on the gear driving disc. A central gear is arranged at the revolution center position of all the planetary gears. The central gear meshes with all the planetary gears. A cooperation motor is also fixedly installed on the gear driving disc. The output shaft of the cooperation motor is fixedly matched with the central gear (the cooperation motor is powered by a slip ring).

[0011] Preferably, a driving motor is also fixedly installed on the base. The output shaft of the driving motor is in transmission cooperation with the gear driving disc through a transmission belt.

[0012] The present invention has the following beneficial effects compared with the prior art: (1) Through precise clamping and pressing mechanisms, the present invention can effectively overcome the problems of sagging and surface unevenness of thin plates caused by gravity. With the clamping strips and extrusion plates that cooperate with magnetic force, and the stable control assisted by centrifugal force, the thin plates always maintain a flat state during the cutting process, avoiding surface deformation or bending; (2) The present invention can ensure that the thin plates always maintain a flat state during the cutting process, which enables the laser cutting head to stably run along the predetermined trajectory, avoiding cutting errors caused by plate deformation; (3) The present invention includes a centrifugal force mechanism generated by a rotating tray, which can effectively remove the powder generated during the cutting process from the cutting area, avoiding powder accumulation on the plate surface. During the cutting process, the cooperation of centrifugal force and the rotating tray separates the powder in a timely manner, reducing the interference of powder on the cutting quality, while ensuring the cleanliness of the equipment, reducing the frequency of later cleaning, and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0014] Figure 2 It is a schematic diagram of the base structure of the present invention.

[0015] Figure 3 It is an exploded view of the structure at the base of the present invention.

[0016] Figure 4 It is a schematic diagram of the structure at the moving slide bar of the present invention.

[0017] Figure 5 It is a schematic diagram of the structure at the linkage gear of the present invention.

[0018] Figure 6 It is a schematic diagram of the structure at the clamping strip of the present invention.

[0019] Figure 7 For the present invention Figure 6 Schematic diagram of the structure at position A.

[0020] In the figure: 101 - base; 102 - toothed ring disc; 103 - planetary gear; 104 - central gear; 105 - gear driving disc; 106 - driving disc bracket; 107 - collaborative motor; 108 - transmission belt; 109 - driving motor; 110 - rotating tray; 111 - support ring frame; 112 - rotating plane; 113 - clamping strip; 114 - downward pressing beam strip; 115 - downward sliding rod; 116 - extrusion plate; 117 - placement insertion groove; 118 - clamping counterweight support sliding rod; 119 - clamping counterweight; 120 - downward pressing connecting rod; 121 - long-shaped sliding groove; 122 - rack; 123 - rack bracket; 124 - linkage gear; 125 - top support ring; 126 - first moving sliding rod; 127 - second moving sliding rod support block; 128 - second moving sliding rod; 129 - belt drive assembly; 130 - laser welding head; 131 - tension spring; 132 - bow-shaped frame; 133 - moving counterweight. Detailed implementation manner

[0021] The following combines the attached Figures 1-7 drawings, and further illustrates the technical solution of the present invention through specific implementation manners.

[0022] The present invention provides a high-precision cutting device for ultra-thin metal sheets, including a rotating plane 112. Two symmetrically arranged long sliding grooves 121 are provided in the radial direction of the rotating plane 112. Clamping strips 113 are symmetrically arranged at the two long sliding grooves 121. Each clamping strip 113 is provided with a placement insertion groove 117. The clamping strip 113 is slidably arranged on the upper surface of the rotating plane 112 along the length direction of the long sliding groove 121. An extrusion plate 116 is arranged in the placement insertion groove 117, and the extrusion plate 116 is used for clamping the sheet inserted into the placement insertion groove 117. The lower surface of the rotating plane 112 is fixedly mounted on a rotating tray 110 in a suspended manner. Above the rotating plane 112, a top support ring 125 is fixedly mounted in a suspended manner through a support ring frame 111. Two parallel first moving slide bars 126 are fixedly installed on the inner side of the top support ring 125. Second moving slide bar support blocks 127 are slidably sleeved on the two first moving slide bars 126. Two parallel second moving slide bars 128 are fixedly installed between the two second moving slide bar support blocks 127. A laser welding head 130 is slidably arranged on the two second moving slide bars 128. Two parallel downward sliding slide bars 115 are also slidably installed on the clamping strip 113. The two downward sliding slide bars 115 are fixedly matched with the placement insertion groove 117. The ends of the two downward sliding slide bars 115 far from the placement insertion groove 117 are fixedly installed with a downward pressure beam strip 114. Two parallel clamping counterweight support slide bars 118 are fixedly installed on the side surface of the clamping strip 113. A clamping counterweight 119 is slidably arranged on the clamping counterweight support slide bars 118. The clamping counterweight 119 is movably connected to the downward pressure beam strip 114 through a downward pressure connecting rod 120. The height of the lower surface of the downward pressure beam strip 114 is higher than the height of the upper surface of the clamping counterweight 119, and the downward pressure connecting rod 120 is inclined. Two parallel rack brackets 123 are fixedly installed on the lower surface of the rotating plane 112. Two racks 122 symmetrically arranged about the center origin of the rotating plane 112 are slidably matched between the two rack brackets 123. The two racks 122 are fixedly matched with the two clamping strips 113 passing through the long sliding grooves 121. The two racks 122 are meshed and driven through a linkage gear 124.

[0023] A belt drive assembly 129 for driving the laser welding head 130 to slide on the second moving slide bar 128 is rotatably provided on the second moving slide bar support block 127; a tension spring 131 is disposed around each first moving slide bar 126, and both ends of the tension spring 131 are fixedly engaged with the top support ring 125 and the second moving slide bar support block 127. An arc-shaped frame 132 is fixed to one end of the two second moving slide bar support blocks 127 away from the tension spring 131, and a moving counterweight 133 is fixed to the middle of the arc-shaped frame 132. The arc-shaped frame 132 is slidably disposed on the top edge of the top support ring 125, and the arc-shaped frame 132 is also slidably engaged with the two first moving slide bars 126. The rotating tray 110 is rotatably mounted on the base 101, and a toothed ring disc 102 coaxial with the rotating tray 110 is also rotatably mounted on the base 101. The toothed ring disc 102 and the rotating tray 110 are fixedly engaged through a rotating shaft. A driving disc support 106 is fixedly mounted on the base 101, and a gear driving disc 105 is rotatably mounted on the driving disc support 106. At least two planetary gears 103 meshing with the inner side of the toothed ring disc 102 are rotatably mounted on the gear driving disc 105. A central gear 104 is disposed at the revolution center position of all the planetary gears 103, and the central gear 104 meshes with all the planetary gears 103. A cooperation motor 107 is also fixedly mounted on the gear driving disc 105, and the output shaft of the cooperation motor 107 is fixedly engaged with the central gear 104 (the cooperation motor 107 is powered by a slip ring). A driving motor 109 is also fixedly mounted on the base 101, and the output shaft of the driving motor 109 and the gear driving disc 105 are in transmission cooperation through a transmission belt 108.

[0024] The working principle of a high-precision cutting device for ultra-thin metal sheets disclosed by the present invention is as follows: Insert both sides of the sheet into the placement insertion groove 117, and then press down the pressing beam 114 so that the pressing plate 116 fits against the edge of the sheet in the placement insertion groove 117 (there is a magnetic cooperation between the pressing beam 114 and the clamping strip 113. Therefore, in the default state, the pressing plate 116 will magnetically press the sheet in the placement insertion groove 117. At the same time, rubber coatings are provided on the surfaces of the placement insertion groove 117 and the pressing plate 116 to increase the friction). Then control the cooperation motor 107 or the driving motor 109 (when the cooperation motor 107 and the driving motor 109 are not working, the output shaft can be in a stopped rotating state, and can provide a directional torque to the rotor according to the force direction of its own output shaft to maintain static, or a one-way transmission mechanism, such as a worm and worm gear, is provided at the output shafts of the cooperation motor 107 and the driving motor 109, which needs to be used in combination with a gearbox). When the cooperation motor 107 works, the output shaft will drive the central gear 104 to rotate. The central gear 104 drives the ring gear 102 to rotate through the planetary gear 103 (at this time, the gear driving disk 105 is in a static state). The rotation of the ring gear 102 drives the rotating tray 110 to rotate. The rotating tray 110 drives the rotating plane 112 to rotate, and then drives the clamping counterweight 119 on the rotating plane 112 to rotate. When the clamping counterweight 119 rotates, it will move outward under the centrifugal force. At this time, it will drive the pressing beam 114 to move in the direction close to the surface of the rotating plane 112 through the downward pressing connecting rod 120, and provide a downward pressure to the pressing plate 116 through the sliding rod 115, pressing the edge of the sheet tightly in the placement insertion groove 117. At the same time, the clamping strip 113 itself will also move outward under the centrifugal force to straighten the sheet (thin sheets are prone to sag due to gravity, which will cause the surface of the sheet to be uneven), making its surface tense and smoother.

[0025] During cutting, the belt drive assembly 129 can drive the laser welding head 130 to move on the second moving slide bar 128 (starting the laser welding head 130 enables cutting of the sheet metal, and the powder generated during cutting will also rotate and separate from the sheet metal under the centrifugal force; the outer shell of the laser welding head 130 is fixed to one side of the belt drive assembly 129). At the same time, to control the movement of the laser welding head 130 along the direction of the first moving slide bar 126, the rotational speed of the rotating plane 112 needs to be adjusted. The rotating plane 112 rotates synchronously with the top support ring 125, the first moving slide bar 126, the bow-shaped frame 132, and the moving counterweight 133. At this time, only by controlling the rotational speed of the rotating plane 112 can the magnitude of the centrifugal force received by the moving counterweight 133 be controlled. The moving counterweight 133 pulls the second moving slide bar support block 127 through the bow-shaped frame 132, and then pulls the tension spring 131. By balancing the centrifugal force with the tension of the tension spring 131, the position of the second moving slide bar support block 127 (laser welding head 130) on the first moving slide bar 126 is adjusted.

[0026] The rotational speeds of the rotating plane 112 and the rotating tray 110 can be steplessly adjusted by controlling the rotational speed of the output shaft of the cooperation motor 107 or the rotational speed of the output shaft of the drive motor 109 or simultaneously controlling the rotational speeds of the output shafts of the cooperation motor 107 and the drive motor 109. For example, when the cooperation motor 107 is in the off state and the drive motor 109 is controlled, the output shaft of the drive motor 109 can directly drive the gear driving disk 105 to rotate through the transmission belt 108. Since the central gear 104 cannot rotate relative to the gear driving disk 105, the toothed ring disk 102, the planetary gear 103, the central gear 104, and the gear driving disk 105 form a whole. At this time, the rotating tray 110 can be directly driven to rotate, and the transmission ratio between the rotating speed of the rotating tray 110 and the output shaft of the drive motor 109 is a fixed value; if the cooperation motor 107 and the drive motor 109 work simultaneously, the cooperation motor 107 can drive the central gear 104 to rotate. The specific rotational speed is limited by the cooperation motor 107. Therefore, the planetary gear 103 will rotate and revolve under limitation. At the same time, the power transmitted from the gear driving disk 105 to the toothed ring disk 102 is also adjusted by the planetary gear 103 (the drive motor 109 is the power source, and the cooperation motor 107 plays an adjustment role; vice versa).

Claims

1. A high-precision cutting device for ultra-thin metal sheets, characterized in that: The rotating plane (112) comprises two symmetrically arranged long chute grooves (121) in the radial direction of the rotating plane (112), clamping bars (113) are symmetrically arranged at the two long chute grooves (121), each clamping bar (113) is provided with a placement insertion groove (117), the clamping bar (113) is slidably arranged on the upper surface of the rotating plane (112) along the length direction of the long chute groove (121), an extrusion plate (116) is arranged in the placement insertion groove (117), and the extrusion plate (116) is used to clamp a plate inserted into the placement insertion groove (117); The lower surface of the rotating plane (112) is fixed in an overhead manner on the rotating tray (110); a top support ring (125) is fixed in an overhead manner above the rotating plane (112) via a support ring frame (111); two first movable slide bars (126) arranged in parallel are fixedly mounted on the inner side of the top support ring (125); second movable slide bar support blocks (127) are slidably sleeved on the two first movable slide bars (126); two second movable slide bars (128) arranged in parallel are fixedly mounted between the two second movable slide bar support blocks (127); and laser welding heads (130) are slidably mounted on the two second movable slide bars (128).

2. The high-precision cutting device for ultra-thin metal sheets according to claim 1, characterized in that: Two parallel lower slide bars (115) are also slidably mounted on the clamping bar (113). The two lower slide bars (115) are fixedly matched with the placement insertion grooves (117). A downward pressing beam bar (114) is fixedly mounted on one end of the two lower slide bars (115) away from the placement insertion grooves (117).

3. The high-precision cutting device for ultra-thin metal sheets according to claim 2, characterized in that: Two parallel clamping counterweight support slide bars (118) are fixedly mounted on the side of the clamping bar (113), a clamping counterweight (119) is slidably mounted on the clamping counterweight support slide bar (118), the clamping counterweight (119) and the downward pressing beam (114) are movably connected via a downward pressing connecting rod (120), wherein the height of the lower surface of the downward pressing beam (114) is higher than the height of the upper surface of the clamping counterweight (119), and the downward pressing connecting rod (120) is inclined.

4. The high-precision cutting device for ultra-thin metal sheets according to claim 3, characterized in that: Two parallel rack brackets (123) are fixedly mounted on the lower surface of the rotating plane (112); two racks (122) symmetrical about the central origin of the rotating plane (112) are slidably arranged between the two rack brackets (123); the two racks (122) and the two clamping bars (113) are fixedly matched through the elongated sliding grooves (121); the two racks (122) are meshed and transmission matched through a linkage gear (124).

5. The high-precision cutting device for ultra-thin metal sheets according to claim 4, characterized in that: A belt drive assembly (129) is rotatably arranged on the second movable slide bar support block (127) for driving the laser welding head (130) to slide on the second movable slide bar (128); a tension spring (131) is arranged around each first movable slide bar (126), and both ends of the tension spring (131) are fixedly matched with the top support ring (125) and the second movable slide bar support block (127).

6. The high-precision cutting device for ultra-thin metal sheets according to claim 5, characterized in that: A bow frame (132) is fixed on one end of the two second movable slide rod support blocks (127) away from the tension spring (131), and a movable counterweight block (133) is fixed in the middle of the bow frame (132), wherein the bow frame (132) is slidably arranged on the top edge of the top support ring (125), and the bow frame (132) is also slidably matched with the two first movable slide rods (126).

7. The high-precision cutting device for ultra-thin metal sheets according to claim 6, characterized in that: The rotating tray (110) is rotatably mounted on the base (101), and a gear ring disk (102) coaxial with the rotating tray (110) is also rotatably mounted on the base (101). The gear ring disk (102) and the rotating tray (110) are fixedly matched via a rotating shaft. An active disk bracket (106) is also fixedly mounted on the base (101), and a gear active disk (105) is rotatably mounted on the active disk bracket (106).

8. The high-precision cutting device for ultra-thin metal sheets according to claim 7, characterized in that: At least two planetary gears (103) meshing with the inner side of the gear ring disk (102) are rotatably mounted on the gear driving disk (105); a central gear (104) is provided at the revolution center position of all the planetary gears (103); the central gear (104) meshes with all the planetary gears (103); a cooperative motor (107) is also fixedly mounted on the gear driving disk (105); and an output shaft of the cooperative motor (107) is fixedly matched with the central gear (104).

9. The high-precision cutting device for ultra-thin metal sheets according to claim 8, characterized in that: A driving motor (109) is also fixedly mounted on the base (101), and an output shaft of the driving motor (109) is coupled to the gear driving disk (105) via a transmission belt (108).

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