CN108817714B

CN108817714B - Biochip positioning fixture

Info

Publication number: CN108817714B
Application number: CN201811039672.8A
Authority: CN
Inventors: 廖晓玲; 徐文峰; 游小双; 蒋欢
Original assignee: Chongqing University of Science and Technology
Current assignee: Chongqing University of Science and Technology
Priority date: 2018-09-06
Filing date: 2018-09-06
Publication date: 2023-07-28
Anticipated expiration: 2038-09-06
Also published as: CN108817714A

Abstract

The invention provides a biochip positioning fixture, which consists of a base, a transverse rail, a longitudinal rail, a hydraulic device, pliers, a metal frame and the like, and is characterized in that: the longitudinal rail is used for positioning the longitudinal position, the transverse rail is used for positioning the transverse position, the hydraulic device is used for positioning the height, and the metal frame can be used for selecting the corresponding size according to the size of the chip. The invention is technically characterized in that the metal frame used as the object stage has two sides with elasticity, and can fix chips with different sizes and shapes; the biochip is positioned through double control of the track and the hydraulic device, so that the engraving machine is convenient for accurately engraving the biochip. When the secondary carving is implemented, the position of the last carving can be quickly and accurately restored.

Description

Biochip positioning fixture

Technical Field

The invention relates to a convenient positioning fixture, in particular to a novel positioning fixture for fixing biochips with different shapes and sizes for a laser engraving machine.

Technical Field

At present, with the rapid development of society, the photolithography technology is widely applied to the micro-processing fields such as integrated circuit manufacturing, liquid crystal display, micro-electro-mechanical systems, micro-optical devices, biochips and the like as a key technology of micro-processing. Therefore, people invent and design various clamps, but because the common clamps on the market can accurately position, the operation is complex, the operation is simple, the functions are single, and the processing quality and the processing efficiency can not meet the requirements of the current fine process. Moreover, if the treatment is not good, the production cost is also affected. The biochip materials are easy to damage, the current situation is large, and the common clamping apparatus for machining cannot completely meet the requirements of people on the biochip technology.

Therefore, a multifunctional biochip positioning fixture which is simple and convenient to operate and can meet various process requirements of a laser engraving machine is needed.

Disclosure of Invention

The invention mainly aims to provide a biochip positioning fixture with simple operation, which solves the problem that the conventional fixture in the prior art cannot meet the processing requirement of a biochip process.

In order to achieve the above object, the present invention provides a biochip positioning fixture, which comprises the following technical scheme: the fixture is divided into a lower fixture half and an upper fixture half, wherein the bottommost surface of the lower fixture half is a rectangular base with a rectangular top surface, and the edges of four corners of the base are provided with 4 threaded holes for fixing the fixture, and the base is fixed on an engraving machine to fix the whole fixture. The middle part of the upper surface of the base is provided with a track which traverses front and back, namely a longitudinal track, and two ends of the longitudinal track are flush with the clamp base. The upper surface of the longitudinal rail is provided with a lower sliding block matched with the longitudinal rail, and a rail which is parallel and vertical to the longitudinal rail direction, namely a left transverse rail and a right transverse rail, is arranged on a supporting table at the top of the lower sliding block. An upper sliding block matched with the transverse rail is arranged on the transverse rail. The design of the longitudinal rail, the transverse rail, the upper sliding block and the lower sliding block ensures that the chip sample to be processed shifts back and forth and left and right on the engraving machine. The upper sliding block and the lower sliding block of the track are suitable for the transverse rail and the longitudinal rail, and are placed on the track without moving under the condition of no external force. The upper slide block is provided with a hydraulic device. The design of the hydraulic device solves the problem that the chip sample to be processed moves up and down on the engraving machine. On the top surface of the lifting column inside the hydraulic device, a small boss is machined to be in fit connection with the upper half of the clamp, so as to facilitate the assembly with the clamp table. The upper half part of the fixture consists of a clamp table and a metal frame for placing a chip to be processed. The clamp stand is connected with the small boss of the lifting column in an embedded fit manner through the groove. On the top surface of the clamp table, 4 clamp rods which are consistent in height and uniformly and symmetrically distributed are processed and installed, and the top end head of each clamp rod is fixedly provided with 4 pliers in total. The 4 pliers can jointly clamp the metal frame for placing the chip sample to be processed, and the metal frame are kept on the same horizontal plane. The clamp rod and the clamp the metal frame of the objective table, and compared with the conventional objective table with a solid body, the invention can rapidly air-cool the processed chip, and simultaneously, toxic and harmful gas generated in the processing process is convenient to be pumped out from the side surface. The invention positions the biochip through double control of the track and the hydraulic device, thereby facilitating accurate engraving of the chip by the engraving machine. When the secondary carving is implemented, the position of the last carving can be quickly and accurately restored.

The metal frame is rectangular, the metal frame is used as an object stage, the bottom surface of the metal frame is provided with a shallow groove, namely a sample groove, and the horizontal smooth groove plane of the metal frame is used for placing chips. On two adjacent sides of the metal frame, 2 fixed block slide bars horizontally parallel to the adjacent sides of the metal frame are respectively processed, and the ends of the 2 fixed block slide bars are vertically connected at one corner of the two adjacent sides of the metal frame. And 2 sample fixing blocks are arranged on each fixing block sliding rod in a penetrating way. The adjacent 2 fixed block slide bars and 2 sides of the metal frame opposite to each other jointly enclose the chip in the sample groove, and the groove plane of the sample groove is a horizontal smooth plane area. And 2 ends of an elastic rope, one end of which is respectively fixed on the 2 sample fixing blocks, and the elastic rope is used for fixing the chip sample. The elastic rope is made of elastic materials such as rubber band. Each sample fixing block is provided with a locking screw for adjusting the position of the fixing block. Chip samples of different sizes and shapes are fixed in the sample groove by adjusting the locking screw, sliding the sample fixing block and changing the position of the sample fixing block and the tightness of the elastic rope. The chip to be processed is placed in a sample groove of the metal frame, the sample groove is abutted against one corner of the metal frames of the two fixed block slide bars, which are vertically connected, and then the positions of the two sample fixed blocks are moved along the fixed block slide bars, so that the chip can not be moved by tightening the elastic rope; the sample fixing block is fixed by rotating the locking screw. The invention can adjust the sample fixing block according to the size of the chip to fix the position of the chip to be processed. The metal frame can be placed on the pliers, the opening angle control switch of the pliers is adjusted, the opening angle is adjusted to clamp the metal frame, and the metal frame and the pliers are both provided with soft material protection pads, so that the chip cannot be damaged. The metal frame as the stage has flexibility on both sides by 2 sample fixing blocks, and can fix chips with different sizes and shapes, which is one of the technical cores of the invention.

In the technical scheme, the mounting mode of the longitudinal rail on the base is characterized in that the longitudinal rail is embedded and mounted in a manner that the upper surface of the longitudinal rail is flush with the upper surface of the base, and the longitudinal rail is completely convexly mounted on the upper surface of the base in a conventional manner for mounting 2 types.

In the above technical scheme, the side surface of the vertical rail or the upper surface of the base beside the embedded vertical rail is provided with the vertical rail scale. The front side of the transverse rail is provided with a transverse rail scale. And a longitudinal rail scale alignment mark is processed on one side of the lower sliding block, which faces forward and corresponds to the longitudinal rail scale. A reflector for checking alignment of the vertical rail scale is processed on the front surface of the supporting table on the upper part of the alignment mark of the vertical rail scale. The upper slider is processed to have the rail scale alignment mark towards the front one side that the front and rail scale correspond, and on the hydraulic means of rail scale alignment mark upper portion is towards the front, processing has the enlarged display screen that is used for looking over rail scale alignment mark. The design is convenient for memorizing the carving position and restoring the original memorized carving position.

In the above technical scheme, the upper slider is provided with an upper locking device. The lower slider is provided with a lower locking device, and the design can well fix the position of the clamp, so that the same chip can be conveniently engraved in multiple positioning modes. The hydraulic device is characterized in that a descending button, an ascending button and a height display screen are arranged on the front surface of the hydraulic device in a machining mode. The design is convenient for repeated resetting of fixing and accurate positioning.

In the above technical scheme, the pliers are provided with pliers control switches, so that the opening angle of the pliers can be adjusted. The metal frame is used as an objective table and has various specifications with different side lengths; the clamp table is provided with a plurality of specifications of which the distance between the clamp rods is corresponding to the side length of the metal frame. The design is convenient for the use of chips with different shapes and sizes. The groove at the bottom of the clamp table is provided with a strip shape or a square shape, and can be in translational insertion fit or up-down fit with the lifting column.

Compared with the prior art, the engraving machine has the following effects that the whole structure of the engraving machine occupies small space, the adjustable range is large, and the engraving process is not influenced on the engraving machine platform. The combination of the rail and the hydraulic device is utilized to position the chip, and the adjustment process is quick, accurate and easy to operate. Time is saved for adjusting the chip processing position, and working time is shortened. The designed metal frame is used as an objective table for fixing the chip, and the rubber band is used for clamping the chip through the change of the position of the sample fixing block, and the metal frame can be also suitable for chips with different shapes. The whole operation process is simple and feasible, the chip can be fixed and positioned, and the processing efficiency and quality are improved.

Drawings

Fig. 1 is a schematic top view of the lower half of the present invention.

Fig. 2 is a schematic front view of the lower half of the present invention.

Fig. 3 is a schematic structural view of the pliers of the present invention.

Fig. 4 is a schematic diagram of the front view of the upper half of the present invention.

Fig. 5 is a schematic view of the bottom of the clamp stand according to the present invention.

Fig. 6 is a schematic view of the bottom of the clamp stand according to the present invention.

Fig. 7 is a schematic diagram showing a front view of the hydraulic device and a clamp stand of the present invention.

Fig. 8 is a schematic diagram showing a front view of the hydraulic device and a clamp stand of the present invention.

Fig. 9 is a schematic top view of a metal frame according to the present invention.

Fig. 10 is a schematic perspective view of an overall structure of a longitudinal rail insertion type of the present invention.

Fig. 11 is a schematic perspective view of the overall structure of a vertical rail protrusion type structure of the present invention.

In the figure: 1. a base; 2. a threaded hole; 3. a longitudinal rail; 4. a transverse rail; 5. a longitudinal rail scale; 6. lifting columns; 7. a small boss; 8. a hydraulic device; 9. an upper locking device; 10. a transverse rail scale; 11. a reflecting mirror; 12. a longitudinal rail scale alignment mark; 13. a lower locking device; 14. a lower slide block; 15. a support; 16. alignment marks of the transverse rail scale; 17. a clamp lever; 18. an opening angle control switch; 19. pliers (pliers); 20. a clamp table; 21. a groove; 22. a down button; 23. a rising button; 24. a height display screen; 25. an upper slider; 26. amplifying a display screen; 27. a metal frame; 28. a fixed block slide bar; 29. a sample fixing block; 30. locking a screw; 31. an elastic rope; 32. a sample tank.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

Reference is made to the shape structure in fig. 1-11. The invention is divided into a lower half part of the clamp and an upper half part of the clamp, and is characterized in that: the bottom of the lower half part of the fixture is provided with a rectangular base 1 with a square or rectangular surface, and the edges of four corners of the base 1 are provided with threaded holes 2 for fixing the fixture. A rail which traverses front and back, namely a longitudinal rail 3 is arranged in the middle of the upper surface of the base 1, and two ends of the longitudinal rail 3 are flush with the fixture base 1. The upper surface of the longitudinal rail 3 is provided with a lower sliding block 14 matched with the longitudinal rail, and a rail which is parallel and vertical to the direction of the longitudinal rail 3, namely a left transverse rail 4 and a right transverse rail 4 are arranged on a supporting table 15 at the top of the lower sliding block 14. An upper slide block 25 matched with the transverse rail 4 is arranged on the transverse rail 4, and a hydraulic device 8 is arranged on the upper slide block 25. On the top surface of the lifting column 6 inside the hydraulic device 8, a small boss 7 is machined, which is in mating connection with the upper half of the fixture. The upper half of the fixture consists of a clamp table 20 and a metal frame 27 for placing the chip to be processed. The clamp table 20 is connected with the small boss 7 of the lifting column 6 in an embedded fit manner through a groove 21, 4 clamp rods 17 are uniformly and symmetrically machined and installed on the top surface of the clamp table 20, and a clamp 19 is fixedly installed at the upper end of each clamp rod 17. The 4 pincers 19 can hold the fixed metal frame 27 together. The metal frame 27 is square or rectangular, and on two adjacent sides of the metal frame 27, 2 fixing block slide bars 28 horizontally parallel to the adjacent sides of the metal frame 27 are respectively processed, and the ends of the 2 fixing block slide bars 28 are vertically connected at one corner of the two adjacent sides of the metal frame 27. One and a total of 2 sample fixing blocks 29 are installed on each fixing block sliding rod 28. Adjacent 2 fixed block slide bars 28 and 2 sides of the respective opposite metal frame 27 together enclose the region of the sample well 32. 2 ends of an elastic rope 31, one end of which is fixed on 2 sample fixing blocks 29 respectively; each sample fixing block 29 is provided with a locking screw 30.

In the above technical solution, the mounting mode of the vertical rail 3 on the base 1 includes embedded mounting of the upper surface of the vertical rail 3 flush with the upper surface of the base 1, and conventional mounting of 2 types of vertical rails 3 completely protruding above the upper surface of the base 1.

In the above technical solution, the side surface of the vertical rail 3 or the upper surface of the base 1 beside the embedded vertical rail 3 is processed with the vertical rail scale 5. The front side of the transverse rail 4 is provided with a transverse rail scale 10. The lower slider 14 is provided with a vertical rail scale alignment mark 12 on the front face corresponding to the vertical rail scale 5, and a reflecting mirror 11 for checking the vertical rail scale alignment is provided on the front face of a supporting table 15 on the upper part of the vertical rail scale alignment mark 12. The upper slider 25 is provided with a transverse rail scale alignment mark 16 on the front face and a magnified display screen 26 for checking the transverse rail scale alignment mark on the front face of the hydraulic device 8 on the upper part of the transverse rail scale alignment mark 16. In the above technical solution, the upper slider 25 is provided with the upper locking device 9, the lower slider 14 is provided with the lower locking device 13, and the front surface of the hydraulic device 8 is provided with the descending button 22, the ascending button 23 and the height display screen 24.

In the above technical solution, the pliers 19 are provided with an opening angle control switch 18. The metal frame 27 has a plurality of specifications with different side lengths, and the corresponding clamp stand 20 also has a plurality of specifications with the pliers 19 of the clamp rod being separated from each other and matched with the side length of the metal frame 27. The groove 21 at the bottom of the clamp 20 is in the shape of an elongated bar or square.

Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.

Claims

1. The utility model provides a biochip positioning fixture, its divide into fixture lower half and fixture upper half, its characterized in that: the bottom of the lower half part of the fixture is provided with a rectangular base with a rectangular top surface, and the edges of four corners of the base are provided with threaded holes for fixing the fixture; a rail which traverses front and back, namely a longitudinal rail is arranged in the middle of the upper surface of the base, and two ends of the longitudinal rail are flush with the clamp base; the upper surface of the longitudinal rail is provided with a lower sliding block matched with the longitudinal rail, and a rail which is perpendicular to the longitudinal rail direction and parallel to the plane where the longitudinal rail is positioned, namely a transverse rail which is left and right and transverse is arranged on a supporting table at the top of the lower sliding block; an upper sliding block matched with the transverse rail is arranged on the transverse rail, and a hydraulic device is arranged at the top of the upper sliding block; a small boss which is matched and connected with the upper half part of the clamp is processed on the top surface of the lifting column in the hydraulic device; the upper half part of the fixture consists of a clamp table and a metal frame; the clamp stand is connected with the small boss of the lifting column in a jogged manner through the groove; 4 clamp rods which are consistent in height and uniformly and symmetrically distributed are processed and installed on the top surface of the clamp table, and a clamp is fixedly installed at the top end of each clamp rod, and the total number of the clamp is 4; the 4 pincers can jointly clamp and fix the metal frame; the metal frame is rectangular, the bottom surface of the metal frame is provided with a shallow groove, namely a sample groove, and the groove plane of the sample groove is a horizontal smooth plane area; on two adjacent sides of the metal frame, 2 fixed block slide bars horizontally parallel to the adjacent sides of the metal frame are respectively processed, and the ends of the 2 fixed block slide bars are vertically connected at one corner of the two adjacent sides of the metal frame; each fixed block slide bar is provided with one sample fixed block and 2 sample fixed blocks in a penetrating way; one end of the elastic rope is respectively fixed on 2 sample fixing blocks; each sample fixing block is provided with a locking screw.

2. A biochip positioning fixture according to claim 1, wherein: the mounting mode of the longitudinal rail on the base is that the upper surface of the longitudinal rail is flush with the upper surface of the base, and the longitudinal rail is completely arranged on the upper surface of the base in a protruding mode, namely 2 conventional mounting modes.

3. A biochip positioning fixture according to any one of claim 1 or claim 2, wherein: the side surface of the longitudinal rail or the upper surface of the base beside the embedded longitudinal rail is provided with a longitudinal rail scale; a transverse rail scale is processed on the front side surface of the transverse rail; a longitudinal rail scale alignment mark is processed on one side of the front face of the lower sliding block, which corresponds to the longitudinal rail scale, and a reflector is processed on the front face of the supporting table at the upper part of the longitudinal rail scale alignment mark; the upper slider is processed to have the rail scale alignment mark towards the front and the side that the rail scale corresponds, and on the hydraulic means of rail scale alignment mark upper portion is towards the front, processing has the enlarged display screen.

4. A biochip positioning fixture according to claim 3, wherein: the upper sliding block is provided with an upper locking device; the lower sliding block is provided with a lower locking device; the hydraulic device is characterized in that a descending button, an ascending button and a height display screen are arranged on the front surface of the hydraulic device in a machining mode.

5. A biochip positioning fixture according to claim 1, wherein: the pliers are provided with opening angle control switches; the metal frame is provided with a plurality of specifications with different side lengths; the clamp table is provided with a plurality of specifications of which the distance between clamp rods is corresponding to the side length of the metal frame; the groove at the bottom of the clamp table is provided with a strip shape or a square shape.