Cutting forming device for plastic micro-fluidic chip processing

Abstract

The utility model discloses a cutting forming device for plastic micro-fluidic chip processing, and relates to the technical field of plastic micro-fluidic chip processing, the cutting forming device comprises a base, the lower surface of the base is fixedly connected with a fixed frame, the lower surface of the fixed frame is provided with a mounting hole, the interior of the mounting hole is fixedly connected with a negative pressure fan, and the negative pressure fan is fixedly connected with a negative pressure motor. A plurality of micro holes are fixedly connected to the upper surface of the base, an L-shaped plate is fixedly connected to the upper surface of the base, and two air cylinders are fixedly connected to the lower surface of the L-shaped plate. Adsorption force is generated in the micro holes of the base through the negative pressure fan, a plastic plate is stably fixed to the surface of the base, indentation damage of the clamp is avoided through non-contact fixing, meanwhile, the spring in the fixing block drives the pressing plate to elastically press the edge of the plate, different thickness requirements are met, when the cutting direction is adjusted, the plate can be turned over easily only by closing negative pressure, and the cutting efficiency is improved. The mechanical clamp does not need to be disassembled, the clamping time is greatly shortened, and the batch machining efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of plastic microfluidic chip processing technology, specifically to a cutting and forming device for processing plastic microfluidic chips. Background Technology

[0002] In the fields of biomedicine, chemical analysis, and laboratory automation, microfluidic chips have become a core tool for studying fluid manipulation and reactions due to their advantages such as miniaturization, integration, and high throughput. Among them, plastic materials have become the mainstream substrate for microfluidic chips due to their low cost, ease of processing, and good biocompatibility.

[0003] Before manufacturing plastic microfluidic chips, plastic sheets usually need to be cut to specific dimensions. To prevent the plastic sheets from wobbling during cutting, clamps are usually used to fix them. However, the plastic sheets need to be rotated multiple times during the cutting process, which requires the plastic sheets to be disassembled and fixed multiple times. This increases the number of steps for operators, reduces the cutting efficiency of the plastic sheets, and is not conducive to batch cutting and processing. Utility Model Content

[0004] In view of the problems existing in the cutting and forming device for processing plastic microfluidic chips, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide a cutting and forming device for processing plastic microfluidic chips, which solves the problem that the plastic sheet needs to be rotated multiple times during the cutting process, which requires the plastic sheet to be disassembled and fixed multiple times, thus increasing the number of operation steps for workers, reducing the cutting efficiency of the plastic sheet, and making it unsuitable for batch cutting and processing.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A cutting and forming device for processing plastic microfluidic chips includes a base, a fixing frame fixedly connected to the lower surface of the base, mounting holes formed on the lower surface of the fixing frame, a negative pressure fan fixedly connected inside the mounting holes, multiple micro-holes fixedly connected to the upper surface of the base, an L-shaped plate fixedly connected to the upper surface of the base, two cylinders fixedly connected to the lower surface of the L-shaped plate, a moving plate fixedly connected to the output ends of the two cylinders, a strip-shaped hole formed on the upper surface of the moving plate, a cutting machine disposed inside the strip-shaped hole, an adjustment mechanism disposed on the upper surface of the moving plate, the cutting machine moving through the adjustment mechanism, fixing holes formed on the upper surfaces of both ends of the moving plate, fixing blocks slidably disposed inside the fixing holes, cavities formed inside the fixing blocks, clamping mechanisms disposed inside the cavities, sliding grooves formed on one side of the fixing holes, fixing mechanisms disposed inside the sliding grooves, and the two fixing blocks respectively fixed by corresponding fixing mechanisms.

[0008] Preferably, the adjusting mechanism includes two mounting plates, a lead screw, a limiting rod, a motor, and two sliders. The two mounting plates are symmetrically fixedly connected to the upper surface of the moving plate. The lead screw is rotatably connected between the two mounting plates. The limiting rod is fixedly connected between the two mounting plates. One slider is threaded onto the wall of the lead screw, and the other slider is slidably connected onto the wall of the limiting rod. The two sliders are symmetrically fixedly connected to one side of the cutting machine. The motor is fixedly connected to one side of the mounting plate. One end of the lead screw passes through one side of the corresponding mounting plate and is fixedly connected to the output end of the motor.

[0009] Preferably, the clamping mechanism includes a pressure plate, two connecting rods, two pressure blocks, and two springs. The lower surfaces of the two cavities are provided with through holes. The two connecting rods are slidably disposed inside the corresponding through holes. The two pressure plates are fixedly connected to the lower ends of the corresponding connecting rods. The two pressure blocks are fixedly connected to the upper ends of the corresponding connecting rods. The two springs are disposed inside the corresponding cavities and are matched with the corresponding pressure blocks.

[0010] Preferably, the fixing mechanism includes two screws, two inserts and two knobs. The two screws are rotatably connected to the inside of the corresponding slide groove, and the two inserts are threaded onto the outer surface of the corresponding screw. One end of each screw passes through one side of the corresponding slide groove and is fixedly connected to the corresponding knob.

[0011] Preferably, each of the two sliding grooves has two symmetrically formed limiting grooves inside, and each of the two limiting grooves has a limiting block slidably arranged inside, with each limiting block symmetrically and fixedly connected to the outer surface of the corresponding insert.

[0012] Preferably, some of the two fixing blocks are provided with slots, and each slot is matched with a corresponding insert block.

[0013] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0014] 1. This utility model uses a negative pressure fan to generate an adsorption force in the micro-holes of the base, which stably fixes the plastic sheet to the surface of the base. The non-contact fixing avoids damage from clamp indentations. At the same time, the spring in the fixing block drives the pressure plate to elastically press the edge of the sheet, which can adapt to different thickness requirements. When adjusting the cutting direction, the sheet can be easily flipped by simply turning off the negative pressure, without disassembling the mechanical clamps, which greatly reduces clamping time and improves batch processing efficiency.

[0015] 2. This utility model uses a motor to drive a lead screw and a limiting rod to achieve linear movement of the cutting machine along the strip hole, ensuring accurate cutting path. The cylinder controls the lifting and lowering of the moving plate to flexibly adjust the cutting height. Combined with the double slider structure, it ensures stable operation of the cutting machine, reduces cutting deviation caused by vibration, and improves the molding accuracy and consistency of microfluidic chips. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

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

[0018] Figure 2 For the present utility model Figure 1 Top view of the moving plate;

[0019] Figure 3 For the present utility model Figure 1 Enlarged schematic diagram of part A.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Base, 2. Fixing frame, 3. Negative pressure fan, 4. L-shaped plate, 5. Cylinder, 6. Moving plate, 7. Cutting machine, 8. Fixing block, 9. Mounting plate, 10. Lead screw, 11. Limiting rod, 12. Motor, 13. Slider, 14. Pressure plate, 15. Connecting rod, 16. Pressure block, 17. Spring, 18. Screw, 19. Insertion block, 20. Knob, 21. Limiting block. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0023] This utility model discloses a cutting and forming device for processing plastic microfluidic chips.

[0024] This utility model provides, for example Figure 1-3 The cutting and forming device for processing plastic microfluidic chips shown includes a base 1, a fixing frame 2 fixedly connected to the lower surface of the base 1, mounting holes opened on the lower surface of the fixing frame 2, a negative pressure fan 3 fixedly connected inside the mounting holes, multiple micro holes fixedly connected to the upper surface of the base 1, an L-shaped plate 4 fixedly connected to the upper surface of the base 1, two cylinders 5 fixedly connected to the lower surface of the L-shaped plate 4, a moving plate 6 fixedly connected to the output ends of the two cylinders 5, a strip-shaped hole opened on the upper surface of the moving plate 6, a cutting machine 7 disposed inside the strip-shaped hole, an adjustment mechanism disposed on the upper surface of the moving plate 6, the cutting machine 7 being moved by the adjustment mechanism, fixing holes opened on the upper surfaces of both ends of the moving plate 6, fixing blocks 8 slidably disposed inside the two fixing holes, cavities opened inside the two fixing blocks 8, a pressing mechanism disposed inside the two cavities, a sliding groove opened on one side of the two fixing holes, a fixing mechanism disposed inside the two sliding grooves, and the two fixing blocks 8 being fixed by corresponding fixing mechanisms.

[0025] Place the plastic sheet on the upper surface of base 1. After the negative pressure fan 3 is started, it generates downward airflow through the micro-holes on base 1, which tightly adsorbs the plastic sheet onto the base surface. This non-contact fixing method does not require clamps to directly contact the material, avoiding the indentation or damage to the material caused by traditional clamps. After cutting is completed, the plastic sheet can be easily removed and re-fixed by turning off the negative pressure fan 3. There is no need to disassemble the mechanical clamps, which greatly shortens the clamping time and improves the efficiency of batch processing.

[0026] To move the cutting machine 7, such as Figure 1-2 As shown, the adjustment mechanism includes two mounting plates 9, a lead screw 10, a limiting rod 11, a motor 12, and two sliders 13. The two mounting plates 9 are symmetrically fixedly connected to the upper surface of the moving plate 6. The lead screw 10 is rotatably connected between the two mounting plates 9. The limiting rod 11 is fixedly connected between the two mounting plates 9. One slider 13 is threaded onto the rod wall of the lead screw 10, and the other slider 13 is slidably fitted onto the rod wall of the limiting rod 11. The two sliders 13 are symmetrically fixedly connected to one side of the cutting machine 7. The motor 12 is fixedly connected to one side of the mounting plate 9. One end of the lead screw 10 passes through one side of the corresponding mounting plate 9 and is fixedly connected to the output end of the motor 12.

[0027] Motor 12 drives lead screw 10 to rotate, which in turn drives threaded slider 13 to move laterally along lead screw. On the other side, slider 13 slides synchronously along limit rod 11, ensuring that cutting machine 7 moves in a straight line along the strip hole.

[0028] To further secure the plastic sheet, such as Figure 1-2 As shown, the clamping mechanism includes a pressure plate 14, two connecting rods 15, two pressure blocks 16, and two springs 17. The lower surfaces of the two cavities are provided with through holes. The two connecting rods 15 are slidably disposed inside the corresponding through holes. The two pressure plates 14 are fixedly connected to the lower ends of the corresponding connecting rods 15. The two pressure blocks 16 are fixedly connected to the upper ends of the corresponding connecting rods 15. The two springs 17 are disposed inside the corresponding cavities and are matched with the corresponding pressure blocks 16.

[0029] The movable plate 6 is raised and lowered by the cylinder 5 to adjust the distance between the cutting machine and the plastic plate. During this process, the spring 17 in the fixed block 8 pushes the pressure block 16 and the connecting rod 15, so that the pressure plate 14 presses down on the edge of the plastic plate. The elastic design of the spring can adapt to the plate of different thicknesses, ensuring that the pressing force is uniform and will not damage the plate.

[0030] In order to keep the fixed block 8 in place after it is moved, such as Figure 1 and Figure 3 As shown, the fixing mechanism includes two screws 18, two inserts 19, and two knobs 20. The two screws 18 are rotatably connected to the inside of the corresponding slide grooves. The two inserts 19 are threaded onto the outer surface of the corresponding screws 18. One end of each screw 18 passes through one side of the corresponding slide groove and is fixedly connected to the corresponding knob 20. Two limiting grooves are symmetrically opened inside each of the two slide grooves. A limiting block 21 is slidably set inside each of the two limiting grooves. Each limiting block 21 is symmetrically fixedly connected to the outer surface of the corresponding insert 19. Some of the two fixing blocks 8 are provided with slots, and each slot matches the corresponding insert 19.

[0031] By moving the position of the fixing block 8, the two pressure plates can be further adapted to plates of different thicknesses. After being adjusted to a certain position, the knob 20 is rotated to drive the screw 18 to rotate, which drives the insert block 19 to insert into the slot of the fixing block 8, locking the position of the fixing block. The cooperation between the limit block 21 and the limit groove ensures that the insert block moves in a straight line and prevents tilting.

[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. A cutting and forming device for processing plastic microfluidic chips, comprising a base (1), characterized in that, A fixed frame (2) is fixedly connected to the lower surface of the base (1). An installation hole is provided on the lower surface of the fixed frame (2). A negative pressure fan (3) is fixedly connected inside the installation hole. Multiple micro holes are fixedly connected to the upper surface of the base (1). An L-shaped plate (4) is fixedly connected to the upper surface of the base (1). Two cylinders (5) are fixedly connected to the lower surface of the L-shaped plate (4). The output ends of the two cylinders (5) are fixedly connected to a moving plate (6). A strip-shaped hole is provided on the upper surface of the moving plate (6). The inside of the strip-shaped hole is... A cutting machine (7) is provided. An adjustment mechanism is provided on the upper surface of the moving plate (6). The cutting machine (7) moves through the adjustment mechanism. Fixing holes are provided on the upper surfaces of both ends of the moving plate (6). Fixing blocks (8) are slidably provided inside the two fixing holes. Cavities are provided inside the two fixing blocks (8). Pressing mechanisms are provided inside the two cavities. Slide grooves are provided on one side of the two fixing holes. Fixing mechanisms are provided inside the two slide grooves. The two fixing blocks (8) are fixed by corresponding fixing mechanisms.

2. The cutting and forming apparatus for processing plastic microfluidic chips according to claim 1, characterized in that, The adjustment mechanism includes two mounting plates (9), a lead screw (10), a limiting rod (11), a motor (12), and two sliders (13). The two mounting plates (9) are symmetrically fixedly connected to the upper surface of the moving plate (6). The lead screw (10) is rotatably connected between the two mounting plates (9). The limiting rod (11) is fixedly connected between the two mounting plates (9). One of the sliders (13) is threaded onto the wall of the lead screw (10), and the other slider (13) is slidably connected onto the wall of the limiting rod (11). The two sliders (13) are symmetrically fixedly connected to one side of the cutting machine (7). The motor (12) is fixedly connected to one side of the mounting plate (9). One end of the lead screw (10) passes through one side of the corresponding mounting plate (9) and is fixedly connected to the output end of the motor (12).

3. The cutting and forming apparatus for processing plastic microfluidic chips according to claim 1, characterized in that, The clamping mechanism includes a pressure plate (14), two connecting rods (15), two pressure blocks (16), and two springs (17). The lower surfaces of the two cavities are provided with through holes. The two connecting rods (15) are slidably disposed inside the corresponding through holes. The two pressure plates (14) are fixedly connected to the lower ends of the corresponding connecting rods (15). The two pressure blocks (16) are fixedly connected to the upper ends of the corresponding connecting rods (15). The two springs (17) are disposed inside the corresponding cavities and are matched with the corresponding pressure blocks (16).

4. The cutting and forming apparatus for processing plastic microfluidic chips according to claim 1, characterized in that, The fixing mechanism includes two screws (18), two inserts (19) and two knobs (20). The two screws (18) are rotatably connected to the inside of the corresponding slide groove, and the two inserts (19) are threaded onto the outer surface of the corresponding screws (18). One end of the two screws (18) passes through one side of the corresponding slide groove and is fixedly connected to the corresponding knobs (20).

5. The cutting and forming apparatus for processing plastic microfluidic chips according to claim 1, characterized in that, Two limiting grooves are symmetrically opened inside the two sliding grooves, and a limiting block (21) is slidably arranged inside the two limiting grooves. Each limiting block (21) is symmetrically fixedly connected to the outer surface of the corresponding insert (19).

6. The cutting and forming apparatus for processing plastic microfluidic chips according to claim 1, characterized in that, Some of the two fixing blocks (8) are provided with slots, each of the slots being matched with a corresponding insert block (19).

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