Automatic positioning fixture for laser cutting of nickel sheet

Abstract

The utility model discloses an automatic positioning fixture for nickel sheet laser cutting relates to nickel sheet processing technical field. The utility model discloses a bottom plate, the bottom plate top fixedly connected with the frame body, the bottom plate top is provided with the heat dissipation clamping mechanism, the heat dissipation clamping mechanism includes the support fixedly connected in the frame body top, the cylinder fixedly connected in the support bottom, the upper clamping plate fixedly connected in the cylinder output, sets up in the lower clamping plate of upper clamping plate bottom. The utility model discloses through the synergies of heat dissipation clamping mechanism and stirring cooling mechanism, effectively conducts and radiates the large amount of heat of nickel sheet in the laser cutting process, avoids the fixture and nickel sheet to be pressed deformation because of thermal expansion, especially suitable for the high accuracy processing of thin type nickel sheet, adopts the mode that the semiconductor refrigeration piece active refrigeration is combined with the passive stirring of turbine blade, enhances the convection and heat dissipation efficiency of coolant, reduces the system energy consumption, promotes the cooling effect.

Description

Technical Field

[0001] This utility model belongs to the field of nickel sheet processing technology, and in particular relates to an automatic positioning fixture for laser cutting of nickel sheets. Background Technology

[0002] With the rapid development of the new energy, electronics, and precision manufacturing industries, nickel sheets are widely used in battery connectors, electronic components, and aerospace due to their excellent conductivity, corrosion resistance, and mechanical strength. The processing of nickel sheets typically involves precision laser cutting to meet the demands for high precision and complex shapes. Automatic positioning fixtures are used during the laser cutting of nickel sheets.

[0003] Existing automated positioning fixtures are mostly made of metal and rely on mechanical clamping or vacuum adsorption to fix nickel sheets. These fixtures are typically designed with a focus on positioning accuracy, clamping stability, and automation compatibility, but they do not adequately consider the thermal management issues caused by the high thermal conductivity of nickel sheets. During laser cutting, the nickel sheet absorbs laser energy and generates high temperatures. This heat is rapidly transferred to the contact area of ​​the fixture, causing the fixture itself to undergo dimensional changes due to thermal expansion. The thermal expansion of the fixture further compresses the nickel sheet, subjecting it to additional mechanical stress, which can lead to plastic deformation or warping. This effect is particularly pronounced for thin nickel sheets, resulting in deviations in the cutting edges, irregular kerfs, or a decrease in overall flatness, severely impacting cutting quality and product consistency.

[0004] To address these issues, we provide an automatic positioning fixture for laser cutting of nickel sheets. Utility Model Content

[0005] The purpose of this invention is to provide an automatic positioning fixture for laser cutting of nickel sheets. By combining a heat dissipation clamping mechanism and a stirring cooling mechanism, the problem of nickel sheets being easily deformed during use in existing automatic positioning fixtures is solved.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0007] This utility model relates to an automatic positioning fixture for laser cutting of nickel sheets, comprising a base plate, to which a frame is fixedly connected; a heat dissipation clamping mechanism is provided on the top of the base plate, the heat dissipation clamping mechanism comprising a bracket fixedly connected to the top of the frame, a cylinder fixedly connected to the bottom of the bracket, an upper clamping plate fixedly connected to the output end of the cylinder, a lower clamping plate disposed at the bottom of the upper clamping plate, and heat-conducting plates fixedly connected to the bottom of the upper clamping plate and the top of the lower clamping plate respectively; a stirring and cooling mechanism is provided at the bottom of the cylinder, the stirring and cooling mechanism comprising a stirring frame rotatably connected to the front side inside the frame, and a semiconductor cooling chip fixedly connected to the rear side of the frame.

[0008] The present invention is further configured such that the heat dissipation clamping mechanism also includes a pressure pump connected to the front side of the frame and a diversion pipe connected to the front side of the pressure pump.

[0009] The present invention is further configured such that the heat dissipation clamping mechanism includes a threaded telescopic tube connected to the top of the upper clamping plate, a conduit connected to the top of the threaded telescopic tube, and a through pipe connected to one side of the lower clamping plate.

[0010] The present invention is further configured such that the heat dissipation clamping mechanism includes a horizontal tube connected to the rear side of the upper clamping plate, a bent tube connected to the rear side of the lower clamping plate, and a movable tube connected to the rear side of the horizontal tube.

[0011] The present invention is further configured such that the stirring and cooling mechanism includes a return pipe connected to the rear side of the frame, turbine blades fixedly connected to the rear side of the stirring frame, and a support plate movably connected to the surface of the stirring frame.

[0012] The present invention is further configured such that an inlet pipe is connected to the top of the frame and an outlet pipe is connected to the front side of the frame.

[0013] The present invention is further configured such that a baffle is fixedly connected to one side of the frame, and an installation hole is provided on the top of the bottom plate.

[0014] The present invention has the following beneficial effects.

[0015] 1. This utility model effectively conducts and dissipates the large amount of heat generated by the nickel sheet during laser cutting through the synergistic action of the heat dissipation clamping mechanism and the stirring cooling mechanism, avoiding the deformation of the nickel sheet due to thermal expansion of the clamp. It is especially suitable for high-precision processing of thin nickel sheets. The combination of active cooling by semiconductor cooling chip and passive stirring by turbine blade enhances the convection and heat dissipation efficiency of the coolant, reduces system energy consumption, and improves the cooling effect.

[0016] 2. This utility model adopts a flexible connection design of threaded telescopic tube and movable tube to adapt to the up and down movement of the upper clamping plate, ensuring smooth circulation of coolant without affecting the stability and accuracy of clamping action. The coolant forms a closed loop in the system and is driven by a pressure pump to achieve continuous heat dissipation, ensuring the needs of long-term, high-frequency laser cutting operations. The fixture is connected to the external guide rail through the mounting hole, which can realize automated positioning and movement. Combined with the cylinder-driven clamping mechanism, it ensures that the nickel sheet is fixed in position and does not shift during the cutting process.

[0017] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0019] Figure 1 This is a three-dimensional view of an automatic positioning fixture for laser cutting of nickel sheets.

[0020] Figure 2 This is a cross-sectional view of the frame in an automatic positioning fixture for laser cutting of nickel sheets.

[0021] Figure 3 This is a cross-sectional view of the upper clamping plate in an automatic positioning fixture for laser cutting of nickel sheets.

[0022] Figure 4 This is a cross-sectional view of the movable tube in an automatic positioning fixture for laser cutting of nickel sheets.

[0023] Figure 5 This is a right view of a semiconductor cooling chip in an automatic positioning fixture for laser cutting of nickel sheets.

[0024] In the attached diagram: 1. Base plate; 2. Frame; 3. Heat dissipation clamping mechanism; 31. Support; 32. Cylinder; 33. Upper clamping plate; 34. Lower clamping plate; 35. Heat-conducting plate; 36. Pressure pump; 37. Diverter pipe; 38. Threaded telescopic pipe; 39. Conduit; 310. Through pipe; 311. Horizontal pipe; 312. Bend pipe; 313. Movable pipe; 4. Stirring and cooling mechanism; 41. Stirring frame; 42. Semiconductor cooling chip; 43. Return pipe; 44. Turbine blade; 45. Support plate; 5. Baffle. Detailed Implementation

[0025] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Example 1

[0027] Please see Figures 1-5This utility model relates to an automatic positioning fixture for laser cutting of nickel sheets, comprising a base plate 1, a frame 2 fixedly connected to the top of the base plate 1, the frame 2 for containing coolant and providing a mounting base for a heat dissipation clamping mechanism 3 and a stirring cooling mechanism 4, serving as a structural support and a container for coolant circulation; the heat dissipation clamping mechanism 3 is provided on the top of the base plate 1, the heat dissipation clamping mechanism 3 includes a bracket 31 fixedly connected to the top of the frame 2, the bracket 31 supporting a cylinder 32 to ensure the stability and accuracy of the clamping action, a cylinder 32 fixedly connected to the bottom of the bracket 31, the cylinder 32 providing power to drive an upper clamping plate 33 to move up and down, realizing the clamping and release of the nickel sheet, an upper clamping plate 33 fixedly connected to the output end of the cylinder 32, and a lower clamping plate 34 set at the bottom of the upper clamping plate 33, the lower clamping plate 34 being fixedly connected to the frame 2, the upper clamping plate 33 and the lower clamping plate 34 being directly connected. The cylinder 32 is equipped with a stirring and cooling mechanism 4 at the bottom. The stirring and cooling mechanism 4 includes a stirring frame 41 rotatably connected to the front side of the frame 2. The front side of the stirring frame 41 is rotatably connected to the frame 2 via a bearing. The stirring frame 41 rotates in the coolant to promote liquid convection and improve heat dissipation efficiency. A semiconductor cooling chip 42 is fixedly connected to the rear side of the frame 2. The heat-absorbing end of the semiconductor cooling chip 42 extends into the frame 2 and is fixedly connected to the frame 2. The semiconductor cooling chip 42 actively cools, reduces the temperature of the coolant in the frame 2, and enhances the heat dissipation capacity of the system.

[0028] Example 2

[0029] Please see Figures 1-5Based on Embodiment 1, the heat dissipation clamping mechanism 3 further includes a pressure pump 36 connected to the front side of the frame 2. A fixing plate is fixedly connected to the top of the pressure pump 36, and the fixing plate is fixedly connected to the frame 2. The pressure pump 36 provides power to drive the coolant to circulate in the system, achieving active heat dissipation. A diversion pipe 37 connected to the front side of the pressure pump 36 diverts the coolant from the pressure pump 36 to different cooling channels, achieving uniform cooling. The heat dissipation clamping mechanism 3 also includes a threaded telescopic pipe 38 connected to the top of the upper clamping plate 33. The threaded telescopic pipe 38 connects the upper clamping plate 33 and the guide pipe 39, and has a certain... The expansion and contraction mechanism accommodates the vertical movement of the upper clamping plate 33. A conduit 39 connected to the top of the threaded telescopic tube 38 and a through pipe 310 connected to one side of the lower clamping plate 34 are included. Both the conduit 39 and the through pipe 310 are connected to the diversion pipe 37. The conduit 39 is fixedly connected to the frame 2. The conduit 39 and the through pipe 310 guide coolant into the interior of the upper and lower clamping plates 34, achieving direct cooling of the clamping area. The heat dissipation clamping mechanism 3 also includes a horizontal pipe 311 connected to the rear side of the upper clamping plate 33, a bent pipe 312 connected to the rear side of the lower clamping plate 34, a movable pipe 313 connected to the rear side of the horizontal pipe 311, and a stirring cooling mechanism 4. It also includes a return pipe 43 connected to the rear side of the frame 2, a movable pipe 313 sleeved on the surface of the return pipe 43, the movable pipe 313 can move on the surface of the return pipe 43, a bend 312 is connected to the return pipe 43, the horizontal pipe 311, the bend 312 and the return pipe 43 constitute a coolant return channel, guiding the heated coolant back into the frame 2 to achieve circulating cooling, the return pipe 43 guides the heated coolant back into the frame 2 to form a closed loop, and a turbine blade 44 fixedly connected to the rear side of the stirring frame 41, the turbine blade 44 uses the kinetic energy of the returning liquid to drive the stirring frame 41 to rotate, to achieve passive stirring, saving energy. The support plate 45 is movably connected to the surface of the stirring frame 41. The rear side of the stirring frame 41 is located inside the return pipe 43. The stirring frame 41 is movably connected to the support plate 45 through bearings. The support plate 45 is fixedly connected to the return pipe 43. The support plate 45 supports the stirring frame 41 and ensures its stable rotation. The top of the frame 2 is connected to the liquid inlet pipe, and the front side of the frame 2 is connected to the liquid outlet pipe. Both the liquid inlet pipe and the liquid outlet pipe are threaded with pipe caps. A baffle 5 is fixedly connected to one side of the frame 2. The top of the base plate 1 is provided with a mounting hole for mounting the entire fixture on an external guide rail or workbench to achieve precise positioning and movement.

[0030] The working principle of this utility model is as follows: The nickel sheet to be cut is placed between the upper clamping plate 33 and the lower clamping plate 34. The cylinder 32 is activated to push the upper clamping plate 33 downward, which, together with the lower clamping plate 34, clamps the nickel sheet to achieve fixation. The pressure pump 36 is activated, pushing the coolant from the frame 2 through the diversion pipe 37, the guide pipe 39, the threaded telescopic pipe 38, and the through pipe 310 into the upper and lower clamping plates 34 respectively. During the laser cutting process, the nickel sheet generates high temperature, and the heat is conducted through the heat-conducting plate 35 to the coolant inside the upper clamping plate 33 and the lower clamping plate 34 for direct cooling.

[0031] The heated coolant flows through the horizontal pipe 311, the bend pipe 312, and the movable pipe 313 into the return pipe 43, returning to the frame 2. During the return process, the liquid impacts the turbine blades 44, causing the stirring frame 41 to rotate, promoting coolant convection and enhancing heat dissipation efficiency. The semiconductor cooling chip 42 continuously cools the coolant in the frame 2, further reducing the liquid temperature and ensuring the continuous and efficient operation of the cooling system. The coolant forms a closed loop in the system, continuously carrying away heat and dissipating it through the semiconductor cooling chip 42, ensuring the temperature stability of the nickel sheet and the fixture, preventing thermal deformation, and ensuring cutting accuracy and quality.

[0032] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An automatic positioning fixture for laser cutting of nickel sheets, comprising a base plate (1), characterized in that: The top of the base plate (1) is fixedly connected to the frame (2); The bottom plate (1) is provided with a heat dissipation clamping mechanism (3) at the top. The heat dissipation clamping mechanism (3) includes a bracket (31) fixedly connected to the top of the frame (2), a cylinder (32) fixedly connected to the bottom of the bracket (31), an upper clamping plate (33) fixedly connected to the output end of the cylinder (32), a lower clamping plate (34) provided at the bottom of the upper clamping plate (33), and heat-conducting plates (35) fixedly connected to the bottom of the upper clamping plate (33) and the top of the lower clamping plate (34) respectively. The bottom of the cylinder (32) is provided with a stirring and cooling mechanism (4), which includes a stirring frame (41) rotatably connected to the front side of the frame (2) and a semiconductor cooling chip (42) fixedly connected to the rear side of the frame (2).

2. The automatic positioning fixture for laser cutting of nickel sheets according to claim 1, characterized in that: The heat dissipation clamping mechanism (3) also includes a pressure pump (36) connected to the front side of the frame (2) and a diversion pipe (37) connected to the front side of the pressure pump (36).

3. The automatic positioning fixture for laser cutting of nickel sheets according to claim 1, characterized in that: The heat dissipation clamping mechanism (3) also includes a threaded telescopic tube (38) connected to the top of the upper clamping plate (33), a conduit (39) connected to the top of the threaded telescopic tube (38), and a through pipe (310) connected to one side of the lower clamping plate (34).

4. The automatic positioning fixture for laser cutting of nickel sheets according to claim 1, characterized in that: The heat dissipation clamping mechanism (3) also includes a horizontal tube (311) connected to the rear side of the upper clamping plate (33), a bent tube (312) connected to the rear side of the lower clamping plate (34), and a movable tube (313) connected to the rear side of the horizontal tube (311).

5. The automatic positioning fixture for laser cutting of nickel sheets according to claim 1, characterized in that: The stirring and cooling mechanism (4) also includes a return pipe (43) connected to the rear side of the frame (2), a turbine blade (44) fixedly connected to the rear side of the stirring frame (41), and a support plate (45) movably connected to the surface of the stirring frame (41).

6. The automatic positioning fixture for laser cutting of nickel sheets according to claim 1, characterized in that: The top of the frame (2) is connected to an inlet pipe, and the front of the frame (2) is connected to an outlet pipe.

7. The automatic positioning fixture for laser cutting of nickel sheets according to claim 1, characterized in that: A baffle (5) is fixedly connected to one side of the frame (2), and an installation hole is provided on the top of the bottom plate (1).

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