Laser trepanning mechanism for graphene sheet

Abstract

The utility model discloses a laser trepanning mechanism for graphene sheets, which comprises a bottom plate, a workpiece carrying table is arranged on the bottom plate, a support frame is provided with an adjusting seat, a laser head is arranged on the adjusting seat, and a workpiece fixing structure is arranged on the workpiece carrying table; the workpiece fixing structure comprises a two-way ball screw, the two-way ball screw is rotationally arranged in the support, a first nut and a second nut are arranged on the two sides of the two-way ball screw, and a first air conveying pipe and a second air conveying pipe are arranged at one end of the first nut and one end of the second nut correspondingly. A first adsorption head and a second adsorption head are arranged on the first gas conveying pipe and the second gas conveying pipe, and are movably arranged in the adjusting opening; according to the graphene sheet perforating device, graphene sheets of different specifications can be adsorbed and fixed, the stability of the graphene sheets in the perforating process is improved, smoke can be treated, and the situation that the smoke pollutes the air quality of a workshop is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of graphene sheet processing technology, specifically relating to a laser-drilled mechanism for graphene sheets. Background Technology

[0002] Graphene has excellent thermal conductivity and can be used as a reinforcing material for thermal pads. There are two main methods for preparing thermal pads using graphene thermal conductive films: one is to stack and bond graphene thermal conductive sheets layer by layer with adhesive, then cut them into thermal pads, aligning the graphene sheets along their thickness direction; the other is to change the planar orientation of the graphene thermal conductive sheets to a longitudinal alignment through pleats, and then coat them with adhesive to form a monolithic structure.

[0003] Currently, graphene sheets require drilling during processing. However, due to the different specifications of graphene sheets, it is impossible to fix graphene sheets of different specifications. During the drilling process, the graphene sheets are prone to shifting, affecting the drilling accuracy. At the same time, it is impossible to quickly absorb the smoke generated during the drilling process. Therefore, we propose a laser drilling mechanism for graphene sheets. Utility Model Content

[0004] The purpose of this invention is to provide a laser drilling mechanism for graphene sheets, in order to solve the problems mentioned in the background art, which are that when processing graphene sheets, it is necessary to drill holes in them. Due to the different specifications of graphene sheets, it is impossible to fix graphene sheets of different specifications. During the drilling process, the graphene sheets are prone to shifting, affecting the drilling accuracy. At the same time, it is impossible to quickly absorb the smoke generated during the drilling process.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a laser drilling mechanism for graphene sheets, including a base plate, a workpiece stage on the base plate, a frame on one side of the base plate of the workpiece stage, a support frame on the frame, an adjustment seat on the support frame, a laser head on the adjustment seat, and a workpiece fixing structure for adsorbing graphene sheets of different specifications on the workpiece stage.

[0006] The workpiece fixing structure includes a bidirectional ball screw, which is rotatably mounted in a bracket. The bracket is mounted in a workpiece platform. A first nut and a second nut are provided on both sides of the bidirectional ball screw. A first air supply pipe and a second air supply pipe are respectively provided on the first air supply pipe and the second air supply pipe. A first suction head and a second suction head are provided on the first air supply pipe and the second air supply pipe. The first suction head and the second suction head are movably mounted in an adjustment port, which is located on the upper side of the workpiece platform.

[0007] The bottom of the adjustment seat is equipped with a smoke exhaust structure.

[0008] Preferably, both the first and second air supply pipes are connected to a three-way valve via flexible hoses. The three-way valve is connected to the air inlet pipe of the negative pressure pump, which is located at the bottom of the workpiece platform and can discharge the air from the first and second air supply pipes.

[0009] Preferably, a guide block is provided at one end of the first gas supply pipe and the second gas supply pipe. The guide block is slidably disposed in a guide groove, which is disposed on one side surface of the workpiece platform, and can guide the movement of the first gas supply pipe and the second gas supply pipe.

[0010] Preferably, one end of the bidirectional ball screw is connected to the drive shaft of the drive motor, and the drive motor is disposed on one side surface of the workpiece stage, which can control the rotation direction of the bidirectional ball screw.

[0011] Preferably, the smoke exhaust structure includes a first smoke exhaust pipe and a second smoke exhaust pipe, which are symmetrically arranged on both sides of the adjustment seat. One end of the first smoke exhaust pipe and the second smoke exhaust pipe are connected to the main smoke exhaust pipe, and the other end of the first smoke exhaust pipe and the second smoke exhaust pipe are connected to the smoke adsorption component, which can simultaneously adsorb the smoke during the opening process.

[0012] Preferably, the flue gas adsorption assembly includes a support ramp, which is disposed on one side of the bottom of the adjustment seat. Multiple sets of smoke collection hoods are disposed on the inclined surface of the support ramp. The smoke collection hoods are connected to the diversion pipe, which is disposed inside the support ramp. The diversion pipe is also connected to the first exhaust pipe and the second exhaust pipe, which can expand the smoke absorption range and improve the smoke adsorption efficiency.

[0013] Preferably, a connecting pipe is provided on the main exhaust pipe, and the connecting pipe is connected to the exhaust fan through a flexible hose, which can exhaust the smoke.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] (1) This application adjusts the distance between the first adsorption head and the second adsorption head by rotating the bidirectional ball screw, and can adsorb and fix graphene sheets of different specifications, thereby improving their stability when opening holes.

[0016] (2) This application can quickly adsorb the smoke generated during the process of opening the graphene sheet and treat the smoke, thus avoiding the situation of smoke polluting the air quality in the workshop. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2This is a half-sectional view of the workpiece fixing structure in this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the first gas transmission pipe in this utility model;

[0020] Figure 4 This is a half-sectional schematic diagram of the smoke exhaust structure in this utility model;

[0021] Figure 5 for Figure 4 Enlarged structural diagram at point A;

[0022] In the diagram: 1. Workpiece fixing structure; 2. Workpiece platform; 3. Base plate; 4. Frame; 5. Laser head; 6. Longitudinal drive structure; 7. Support frame; 8. Transverse drive structure; 9. Adjustment seat; 91. First exhaust pipe; 92. Connecting pipe; 93. Main exhaust pipe; 94. Second exhaust pipe; 95. Smoke hood; 96. Support ramp; 97. Diverter pipe; 101. Bidirectional ball screw; 102. First nut; 103. Bracket; 104. Drive motor; 105. First air supply pipe; 106. First adsorption head; 107. Adjustment port; 108. Second adsorption head; 109. Second air supply pipe; 110. Second nut; 111. Three-way valve; 112. Negative pressure pump; 113. Guide block. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-3 This utility model provides a technical solution: a laser drilling mechanism for graphene sheets, wherein a workpiece stage 2 is set on a base plate 3, a frame 4 is set on the base plate 3 on one side of the workpiece stage 2, a support frame 7 is set on the frame 4, an adjustment seat 9 is set on the support frame 7, a laser head 5 is set on the adjustment seat 9, a workpiece fixing structure 1 is set on the workpiece stage 2, a transverse drive structure 8 for controlling the transverse movement of the support frame 7 is also set on the frame 4, and a longitudinal drive structure 6 for controlling the height of the adjustment seat 9 is also set on the support frame 7, which can adjust the drilling position of the graphene sheet;

[0025] The workpiece fixing structure 1 includes a bidirectional ball screw 101, which is rotatably mounted in a bracket 103. The bracket 103 is mounted in the workpiece platform 2. A first nut 102 and a second nut 110 are provided on both sides of the bidirectional ball screw 101. A first air supply pipe 105 and a second air supply pipe 109 are respectively provided on the first air supply pipe 105 and the second air supply pipe 109. A first suction head 106 and a second suction head 108 are provided on the first air supply pipe 105 and the second air supply pipe 109. The first suction head 106 and the second suction head 108 are movably mounted in an adjustment port 107, which is located on the upper side of the workpiece platform 2.

[0026] Both the first air supply pipe 105 and the second air supply pipe 109 are connected to the three-way valve 111 via flexible hoses. The three-way valve 111 is connected to the air inlet pipe of the negative pressure pump 112. The negative pressure pump 112 is located at the bottom of the workpiece platform 2 and can discharge the air in the first air supply pipe 105 and the second air supply pipe 109.

[0027] First, a graphene sheet is placed on the workpiece stage 2 by a robotic arm. According to the specifications of the graphene sheet, the bidirectional ball screw 101 is rotated by the drive motor 104. The first nut 102 and the second nut 110 move in opposite directions. The first nut 102 and the second nut 110 drive the first air supply pipe 105 and the second air supply pipe 109 to move in opposite directions. The first air supply pipe 105 and the second air supply pipe 109 drive the first adsorption head 106 and the second adsorption head 108 to move in opposite directions. When the first adsorption head 106 and the second adsorption head 108 are moved to the corner of the graphene sheet, the negative pressure pump 112 generates negative pressure to discharge the airflow from the first air supply pipe 105 and the second air supply pipe 109. The graphene sheet is then adsorbed and fixed by the first adsorption head 106 and the second adsorption head 108.

[0028] Please see Figure 3 A guide block 113 is also provided at one end of the first air supply pipe 105 and the second air supply pipe 109. The guide block 113 is slidably disposed in the guide groove, which is disposed on one side surface of the workpiece platform 2. When the first air supply pipe 105 and the second air supply pipe 109 move, the guide block 113 is driven to move in the guide groove, which can guide the movement of the first air supply pipe 105 and the second air supply pipe 109.

[0029] Specifically, both the transverse drive structure 8 and the longitudinal drive structure 6 are lead screw and lead screw nut transmission structures, which can control the transverse position and height of the laser head 5.

[0030] Furthermore, one end of the bidirectional ball screw 101 is connected to the drive shaft of the drive motor 104, which is located on one side surface of the workpiece stage 2 and can control the rotation direction of the bidirectional ball screw 101.

[0031] Please see Figure 4 as well as Figure 5 The bottom of the regulating seat 9 is equipped with a smoke exhaust structure, which includes a first smoke exhaust pipe 91 and a second smoke exhaust pipe 94. The first smoke exhaust pipe 91 and the second smoke exhaust pipe 94 are symmetrically arranged on both sides of the regulating seat 9. One end of the first smoke exhaust pipe 91 and the second smoke exhaust pipe 94 are connected to the main smoke exhaust pipe 93, and the other end of the first smoke exhaust pipe 91 and the second smoke exhaust pipe 94 are connected to the smoke adsorption component, which can simultaneously adsorb the smoke during the opening process. The smoke adsorption component includes a supporting inclined platform 96, which is arranged on one side of the bottom of the regulating seat 9. Multiple sets of smoke collection hoods 95 are arranged on the inclined surface of the supporting inclined platform 96. Specifically, the opening of the smoke collection hood 95 corresponds to the opening position, which can adsorb the smoke with maximum efficiency. The smoke collection hood 95 is connected to the diversion pipe 97, which is arranged in the supporting inclined platform 96. The diversion pipe 97 is also connected to the first smoke exhaust pipe 91 and the second smoke exhaust pipe 94, which can expand the smoke absorption range and improve the smoke adsorption efficiency.

[0032] When the laser head 5 makes holes in the graphene sheet, a negative pressure is generated by the exhaust fan. The smoke collection hood 95 absorbs the smoke and delivers it to the diversion pipe 97. The diversion pipe 97 delivers the smoke to the first exhaust pipe 91 and the second exhaust pipe 94. The first exhaust pipe 91 and the second exhaust pipe 94 deliver the smoke to the main exhaust pipe 93. The main exhaust pipe 93 delivers the smoke through a flexible hose and discharges it through the exhaust fan. When the adjusting seat 9 moves, it can drive the smoke collection hood 95 to move, which greatly improves the smoke adsorption efficiency during the hole making process.

[0033] Furthermore, a connecting pipe 92 is installed on the main exhaust pipe 93. The connecting pipe 92 is connected to the exhaust fan through a flexible hose, which can exhaust the smoke.

[0034] Although embodiments of the present invention 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 the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A laser-drilling mechanism of graphene sheets, characterized by: The utility model provides a graphene sheet processing device, including bottom plate (3), workpiece support (2) is arranged on bottom plate (3), the bottom plate (3) on the one side of workpiece support (2) is provided with rack (4), support frame (7) is arranged on rack (4), adjustment seat (9) is arranged on support frame (7), laser head (5) is arranged on adjustment seat (9), workpiece fixing structure (1) for adsorbing different specifications graphene sheet is arranged on workpiece support (2); The workpiece fixing structure (1) includes a bidirectional ball screw (101), the bidirectional ball screw (101) is rotatably arranged in a bracket (103), the bracket (103) is arranged in the workpiece support (2), the bidirectional ball screw (101) is provided with a first nut (102) and a second nut (110) on both sides, the first nut (102) and the second nut (110) are respectively provided with a first gas pipe (105) and a second gas pipe (109) at one end, the first gas pipe (105) and the second gas pipe (109) are provided with a first adsorption head (106) and a second adsorption head (108), the first adsorption head (106) and the second adsorption head (108) are movably arranged in an adjusting port (107), and the adjusting port (107) is arranged on the upper side of the workpiece support (2). The adjustment seat (9) is provided with a smoke exhaust structure at the bottom.

2. The laser-drilling mechanism of graphene sheets according to claim 1, characterized in that: The first gas pipe (105) and the second gas pipe (109) are connected to a three-way valve (111) through a hose, the three-way valve (111) is connected to the inlet pipe of a negative pressure pump (112), and the negative pressure pump (112) is arranged at the bottom of the workpiece support (2).

3. A laser-drilling mechanism of graphene sheets according to claim 1 or 2, characterized in that: The first gas pipe (105) and the second gas pipe (109) are further provided with a guide block (113) at one end, the guide block (113) is slidably arranged in a guide groove, and the guide groove is arranged on one side surface of the workpiece support (2).

4. The laser dicing mechanism of graphene sheet as claimed in claim 1, wherein: The bidirectional ball screw (101) is connected to the drive shaft of a drive motor (104) at one end, and the drive motor (104) is arranged on one side surface of the workpiece support (2).

5. The laser dicing mechanism of graphene sheet as claimed in claim 1, wherein: The smoke exhaust structure includes a first smoke exhaust pipe (91) and a second smoke exhaust pipe (94), the first smoke exhaust pipe (91) and the second smoke exhaust pipe (94) are symmetrically arranged on both sides of the adjustment seat (9), one end of the first smoke exhaust pipe (91) and the second smoke exhaust pipe (94) is connected to a main smoke exhaust pipe (93), and the other end of the first smoke exhaust pipe (91) and the second smoke exhaust pipe (94) is connected to a smoke adsorption assembly.

6. A laser dicing mechanism of graphene sheets as claimed in claim 5, wherein: The smoke adsorption assembly includes a support inclined table (96), the support inclined table (96) is arranged on one side of the bottom of the adjustment seat (9), a plurality of smoke collecting hoods (95) are arranged on the inclined surface of the support inclined table (96), the smoke collecting hoods (95) are connected to a flow divider (97), the flow divider (97) is arranged in the support inclined table (96), and the flow divider (97) is further connected to the first smoke exhaust pipe (91) and the second smoke exhaust pipe (94).

7. The laser dicing mechanism of graphene sheet as claimed in claim 5 wherein: The main smoke exhaust pipe (93) is provided with a connecting pipe (92), and the connecting pipe (92) is connected to an exhaust fan through a hose.

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