Suction head uncapping mechanism

Abstract

The utility model provides a sucker cap removing mechanism which comprises a positioning plate, a bayonet is arranged on the positioning plate, and a cap removing clamp assembly is arranged in the bayonet. A fixing frame is detachably fixed to the rear side of the positioning plate, a guide column is arranged between the fixing frame and the positioning plate and comprises a sliding column, the uncapping clamp assembly sleeves the sliding column, the front end and the rear end of the sliding column are provided with a first non-cylinder and a second non-cylinder respectively, the first non-cylinder is inserted into a first non-circular hole of the positioning plate, and the second non-cylinder is inserted into a second non-circular hole of the positioning plate. The second non-circular column is inserted into the second non-circular hole of the fixing frame, and the front end and the rear end of the sliding column abut against the positioning plate and the fixing frame respectively. A first non-circular column is matched with a first non-circular hole, a second non-circular column is matched with a second non-circular hole, and the front end and the rear end of a sliding column abut against a positioning plate and a fixing frame correspondingly, so that the two ends of a guide column are limited and fixed to the fixing frame and the positioning plate correspondingly, and the problem that the uncapping clamp assembly is clamped due to deflection of the guide column is effectively solved; and the disassembly and assembly convenience can be improved.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to a suction head cap removal mechanism. Background Art

[0002] A biochemical analyzer is an instrument that measures a certain chemical component in body fluids based on the principle of photoelectric colorimetry. In order to facilitate the biochemical analyzer to draw samples to be tested from test tubes, the biochemical analyzer generally includes a sampling device, which generally includes a vacuum pump, a catheter connected to the bottom of the vacuum pump, a nozzle connected to the bottom of the catheter, and a suction head connected to the bottom of the nozzle; the vacuum pump is used to draw a vacuum to provide suction, and the suction head is used to directly draw samples or solvents deep into the sample; during use, when it is necessary to draw samples, the nozzle is connected to the suction head, and the suction head uses vacuum suction to draw samples or solvents from the test tube; when it is not necessary to draw samples, the nozzle and the suction head are separated.

[0003] In order to separate the suction nozzle from the suction head, the Chinese patent with publication number CN208833780U provides a cap-removing mechanism for separating the suction head from the suction nozzle, including a base, a positioning plate is provided on the base, a bayonet is provided on the positioning plate, a cap-removing clip is provided in the bayonet, the cap-removing clip is used to clamp and fix the suction head to be separated, a horizontal motion component is provided at the rear of the cap-removing clip, the horizontal motion component is used to drive the cap-removing clip to move in the horizontal direction, and a vertical motion component is provided in front of the cap-removing clip, the vertical motion component is used to drive the suction nozzle to be separated to move in the up and down direction. One end of the guide column of the above-mentioned cap-removing mechanism is screwed to the positioning plate, and the other end is suspended, which makes it easy for the guide column to deform, causing the cap-removing clip to get stuck when moving horizontally.

[0004] Therefore, the prior art still needs to be improved and developed. Utility Model Content

[0005] The utility model aims to provide a suction head cap removal mechanism in view of the defects and shortcomings of the prior art.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] The utility model provides a suction head capping mechanism, comprising a positioning plate, a bayonet being provided on the positioning plate, and a capping clamp assembly being provided in the bayonet; a fixing frame is detachably fixed on the rear side of the positioning plate, a guide column is provided between the fixing frame and the positioning plate, the guide column comprises a sliding column, the capping clamp assembly is sleeved on the sliding column, the front and rear ends of the sliding column respectively have a first non-cylinder and a second non-cylinder, the first non-cylinder is inserted into the first non-circular hole of the positioning plate, the second non-cylinder is inserted into the second non-circular hole of the fixing frame, and the front and rear ends of the sliding column respectively abut against the positioning plate and the fixing frame.

[0008] Through the cooperation between the first non-cylinder and the first non-circular hole, the cooperation between the second non-cylinder and the second non-circular hole, and the front and rear ends of the sliding column respectively abutting against the positioning plate and the fixing frame, the two ends of the guide column are respectively limited and fixed on the fixing frame and the positioning plate, which effectively prevents the problem of the deflection of the guide column causing the cap removal clip assembly to get stuck, and is conducive to improving the convenience of disassembly and assembly.

[0009] According to the above solution, the transverse cross-section of the first non-cylindrical column and the second non-cylindrical column is one of a capsule, a quadrilateral, and a hexagon. Through the above structural arrangement, the guide column cannot rotate.

[0010] According to the above solution, a horizontal motion component is arranged at the rear of the decapping clamp component, and the horizontal motion component is used to drive the decapping clamp component to slide forward and backward along the sliding column.

[0011] According to the above solution, a reset spring is also sleeved on the sliding column, and the two ends of the reset spring act on the positioning plate and the cap removal clamp assembly respectively. By providing the reset spring, the cap removal clamp assembly can be reset in time after the suction head and the suction nozzle are separated.

[0012] According to the above scheme, the cap removal clamp assembly includes a sliding seat and a cap removal clamp, the sliding seat is provided with a sliding hole that cooperates with the sliding column, and the cap removal clamp is fixed on the front side of the sliding seat; the two ends of the reset spring act on the positioning plate and the sliding seat respectively.

[0013] According to the above solution, a vertical motion component is arranged in front of the decapping clamp component; the vertical motion component is fixed on the front side of the positioning plate to drive the suction nozzle to move up and down.

[0014] When the vertical motion component drives the suction head to be separated to move in front of the cap removal clamp component, the cap removal clamp component slides forward along the sliding column to clamp the suction head, and the vertical motion component continues to drive the suction nozzle to move upward to separate the suction head from the suction nozzle.

[0015] According to the above scheme, the vertical motion assembly includes a first drive motor and a slider, the slider is driven by the first drive motor to move up and down, the bottom of the slider is fixed with the suction nozzle, and the suction nozzle is detachably connected to the suction head. The first drive motor drives the slider to move up and down, thereby synchronously driving the suction nozzle to move up and down.

[0016] According to the above scheme, the horizontal motion assembly includes a driving mechanism and a pushing block, the pushing block is driven by the driving mechanism to move left and right, the rear end of the cap removal clamp assembly passes through the fixed frame and abuts against the front side of the pushing block; the front side of the pushing block is formed with an inclined surface and a platform surface connected to the inclined surface.

[0017] The reset spring makes the rear end of the cap removal clamp assembly always abut against the front side of the push block; when the driving push block moves to the platform surface and abuts against the rear end of the cap removal clamp assembly, the cap removal clamp assembly slides forward to clamp the suction head; when the driving push block moves to the inclined surface and abuts against the rear end of the cap removal clamp assembly, the cap removal clamp assembly moves backward and resets.

[0018] According to the above scheme, the driving mechanism includes a second driving motor, a driving gear, a driven gear and a transmission toothed belt. The output shaft of the second driving motor is fixedly connected to the driving gear. The driving gear and the driven gear are respectively meshed and installed at the two ends of the inside of the transmission toothed belt; the pushing block is fixedly connected to the transmission toothed belt through a connecting plate.

[0019] Through the above-mentioned structural arrangement, the second driving motor drives the driving gear to rotate, and combines with the driven gear to move the transmission toothed belt, thereby driving the pushing block to move stably.

[0020] According to the above solution, the decapping clamp assembly includes a buffer roller, which abuts against the front side of the pushing block and can roll along the front side of the pushing block.

[0021] Through the above-mentioned structural arrangement, when the driving block is driven to move left and right, the buffer roller rolls along the front side of the pushing block, thereby reducing the friction between the pushing block and the cap removal clamp assembly.

[0022] The beneficial effects of the utility model are:

[0023] The utility model has a fixing frame detachably fixed on the rear side of the positioning plate, a guide column is provided between the fixing frame and the positioning plate, the guide column includes a sliding column, a cap removal clamp assembly is sleeved on the sliding column, the front and rear ends of the sliding column respectively have a first non-cylinder and a second non-cylinder, the first non-cylinder is inserted in the first non-circular hole of the positioning plate, and the second non-cylinder is inserted in the second non-circular hole of the fixing frame, and the front and rear ends of the sliding column respectively abut against the positioning plate and the fixing frame; through the cooperation between the first non-cylinder and the first non-circular hole, the cooperation between the second non-cylinder and the second non-circular hole, and the front and rear ends of the sliding column respectively abut against the positioning plate and the fixing frame, the two ends of the guide column are respectively limited and fixed on the fixing frame and the positioning plate, which effectively prevents the problem of the cap removal clamp assembly being stuck due to the deflection of the guide column, and is conducive to improving the convenience of disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 ;

[0025] Figure 2 This is a schematic diagram of the structure of the utility model Figure 2 ;

[0026] Figure 3 yes Figure 2The enlarged structural diagram of part A in the middle;

[0027] Figure 4 This is a schematic diagram of the structure of the utility model Figure 3 ;

[0028] Figure 5 It is a structural schematic diagram of the cap removal clip assembly in the utility model;

[0029] Figure 6 It is a structural schematic diagram of the horizontal motion component in the utility model.

[0030] In the figure: 1. positioning plate; 11. bayonet; 12. first non-circular hole; 2. fixing frame; 21. second non-circular hole; 3. guide column; 31. sliding column; 311. reset spring; 32. first non-circular cylinder; 33. second non-circular cylinder; 4. cap removal clamp assembly; 41. cap removal clamp; 42. sliding seat; 421. sliding hole; 43. buffer roller; 5. first drive motor; 51. slider; 511. suction nozzle; 6. suction head; 7. pushing block; 71. inclined surface; 72. platform surface; 8. second drive motor; 81. driving gear; 82. driven gear; 83. transmission toothed belt; 831. connecting plate. DETAILED DESCRIPTION

[0031] The technical solution of the utility model is described below in conjunction with the accompanying drawings and embodiments.

[0032] like Figure 1-6 As shown, the utility model provides a tip capping mechanism, including a positioning plate 1, a bayonet 11 is provided on the positioning plate 1, and a capping clamp assembly 4 is provided in the bayonet 11; a fixing frame 2 is detachably fixed on the rear side of the positioning plate 1, a guide column 3 is provided between the fixing frame 2 and the positioning plate 1, the guide column 3 includes a sliding column 31, the capping clamp assembly 4 is sleeved on the sliding column 31, and the front and rear ends of the sliding column 31 respectively have a first non-cylinder 32 and a second non-cylinder 33, the first non-cylinder 32 is inserted into the first non-circular hole 12 of the positioning plate 1, and the second non-cylinder 33 is inserted into the second non-circular hole 21 of the fixing frame 2, and the front and rear ends of the sliding column 31 are respectively against the positioning plate 1 and the fixing frame 2.

[0033] Through the cooperation between the first non-cylinder 32 and the first non-circular hole 12, the cooperation between the second non-cylinder 33 and the second non-circular hole 21, and the front and rear ends of the sliding column 31 respectively abutting against the positioning plate 1 and the fixing frame 2, the two ends of the guide column 3 are respectively limited and fixed on the fixing frame 2 and the positioning plate 1, which effectively prevents the guide column 3 from being skewed and causing the cap removal clamp assembly 4 to be stuck, and is conducive to improving the convenience of disassembly and assembly.

[0034] Furthermore, the transverse cross-sections of the first non-cylindrical column 32 and the second non-cylindrical column 33 are capsule-shaped, quadrilateral-shaped, and hexagonal-shaped. With the above-mentioned structural arrangement, the guide column 3 cannot rotate.

[0035] Furthermore, a horizontal motion component is disposed at the rear of the cap removal clamp component 4 , and the horizontal motion component is used to drive the cap removal clamp component 4 to slide forward and backward along the sliding column 31 .

[0036] Furthermore, a return spring 311 is sleeved on the sliding column 31, and the two ends of the return spring 311 act on the positioning plate 1 and the cap removal clamp assembly 4. By providing the return spring 311, the cap removal clamp assembly 4 can be reset in time after the suction head 6 and the suction nozzle 511 are separated.

[0037] Furthermore, the cap removal clamp assembly 4 includes a sliding seat 42 and a cap removal clamp 41, the sliding seat 42 is provided with a sliding hole 421 that cooperates with the sliding column 31, and the cap removal clamp 41 is fixed on the front side of the sliding seat 42; the two ends of the reset spring 311 act on the positioning plate 1 and the sliding seat 42 respectively.

[0038] Furthermore, a vertical motion component is arranged in front of the cap removal clamp component 4; the vertical motion component is fixed to the front side of the positioning plate 1 and is used to drive the suction nozzle 511 to move up and down.

[0039] When the vertical motion assembly drives the suction head 6 to be separated to move in front of the cap removal clamp assembly 4, the cap removal clamp assembly 4 slides forward along the sliding column 31 to clamp the suction head 6, and the vertical motion assembly continues to drive the suction nozzle 511 to move upward to separate the suction head 6 from the suction nozzle 511.

[0040] Furthermore, the vertical motion assembly includes a first drive motor 5 and a slider 51. The slider 51 is driven by the first drive motor 5 to move up and down. The bottom of the slider 51 is fixed with the suction nozzle 511, and the suction nozzle 511 is detachably connected to the suction head 6. The first drive motor 5 drives the slider 51 to move up and down, thereby synchronously driving the suction nozzle 511 to move up and down.

[0041] Furthermore, the horizontal motion assembly includes a driving mechanism and a pushing block 7, and the pushing block 7 is driven by the driving mechanism to move left and right. The rear end of the cap removal clamp assembly 4 passes through the fixing frame 2 and abuts against the front side of the pushing block 7; the front side of the pushing block 7 is formed with an inclined surface 71 and a platform surface 72 connected to the inclined surface 71.

[0042] The reset spring 311 makes the rear end of the cap removal clamp assembly 4 always abut against the front side of the push block 7; when the driving push block 7 is moved to the platform surface 72 to abut against the rear end of the cap removal clamp assembly 4, the cap removal clamp assembly 4 slides forward to clamp the suction head 6; when the driving push block 7 is moved to the inclined surface 71 to abut against the rear end of the cap removal clamp assembly 4, the cap removal clamp assembly 4 moves backward to reset.

[0043] Furthermore, the driving mechanism includes a second driving motor 8, a driving gear 81, a driven gear 82 and a transmission belt 83. The output shaft of the second driving motor 8 is fixedly connected to the driving gear 81. The driving gear 81 and the driven gear 82 are respectively meshed and installed at the two ends of the inside of the transmission belt 83; the pushing block 7 is fixedly connected to the transmission belt 83 through a connecting plate 831.

[0044] Through the above-mentioned structural arrangement, the second driving motor 8 drives the driving gear 81 to rotate, and combines with the driven gear 82 to move the transmission belt 83, thereby driving the pushing block 7 to move stably.

[0045] Furthermore, the cap removal clamp assembly 4 includes a buffer roller 43 , and the buffer roller 43 abuts against the front side of the push block 7 and can roll along the front side of the push block 7 .

[0046] Through the above-mentioned structural arrangement, when the driving block 7 is driven to move left and right, the buffer roller 43 rolls along the front side of the driving block 7 to reduce the friction between the driving block 7 and the cap removal clamp assembly 4 .

[0047] When the suction head capping mechanism of the utility model is in use, after the suction head 6 completes the suction operation, the first driving motor 5 drives the sliding block 51 to move upward so that the suction head 6 is located in front of the capping clamp assembly 4; then the second driving motor 8 drives the active gear 81 to rotate, and combines with the driven gear 82 to move the transmission toothed belt 83, and drives the pushing block 7 to move so that the platform surface 72 of the pushing block 7 abuts against the buffer roller 43, and the capping clamp assembly 4 slides forward along the sliding column 31 so that the capping clamp 41 clamps the suction head 6, and the capping clamp assembly 4 compresses the reset spring 311; the first driving motor 5 continues to drive the sliding block 51 to move upward so that the suction head 6 is separated from the suction nozzle 511; when the capping clamp assembly 4 completes the separation operation of the suction head 6 and the suction nozzle 511, the second driving motor 8 drives the pushing block 7 to move so that the inclined surface 71 of the pushing block 7 is located on the rear side of the buffer roller 43, and under the elastic action of the reset spring 311, the buffer roller 43 abuts against the inclined surface 71, thereby resetting the capping clamp assembly 4.

[0048] The above description is only a preferred embodiment of the present utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A tip decapping mechanism, comprising a positioning plate (1), wherein the positioning plate (1) is provided with a bayonet (11), wherein a decapping clamp assembly (4) is provided in the bayonet (11), wherein: A fixing frame (2) is detachably fixed on the rear side of the positioning plate (1), a guide column (3) is provided between the fixing frame (2) and the positioning plate (1), the guide column (3) comprises a sliding column (31), and the cap removal clamp assembly (4) is sleeved on the sliding column (31); The front and rear ends of the sliding column (31) respectively have a first non-circular cylinder (32) and a second non-circular cylinder (33); the first non-circular cylinder (32) is inserted into the first non-circular hole (12) of the positioning plate (1); the second non-circular cylinder (33) is inserted into the second non-circular hole (21) of the fixing frame (2); the front and rear ends of the sliding column (31) respectively abut against the positioning plate (1) and the fixing frame (2).

2. The tip decapping mechanism according to claim 1, characterized in that: The transverse cross-sections of the first non-cylindrical shape (32) and the second non-cylindrical shape (33) are one of a capsule shape, a quadrilateral shape and a hexagon shape.

3. The tip decapping mechanism according to claim 1, characterized in that: A horizontal motion component is arranged at the rear of the cap removal clamp component (4), and the horizontal motion component is used to drive the cap removal clamp component (4) to slide forward and backward along the sliding column (31).

4. The tip decapping mechanism according to claim 3, characterized in that: The sliding column (31) is also sleeved with a return spring (311), and the two ends of the return spring (311) act on the positioning plate (1) and the cap removal clamp assembly (4) respectively.

5. The tip decapping mechanism according to claim 4, characterized in that: The cap removal clamp assembly (4) comprises a sliding seat (42) and a cap removal clamp (41); the sliding seat (42) is provided with a sliding hole (421) that cooperates with the sliding column (31); the cap removal clamp (41) is fixed to the front side of the sliding seat (42); the two ends of the return spring (311) act on the positioning plate (1) and the sliding seat (42) respectively.

6. The tip decapping mechanism according to claim 4, characterized in that: A vertical motion component is arranged in front of the cap removal clamp component (4); the vertical motion component is fixed to the front side of the positioning plate (1) and is used to drive the suction nozzle (511) to move up and down.

7. The tip decapping mechanism according to claim 6, characterized in that: The vertical motion assembly comprises a first driving motor (5) and a slider (51); the slider (51) is driven by the first driving motor (5) to move up and down; the suction nozzle (511) is fixed to the bottom of the slider (51); and the suction nozzle (511) is detachably connected to the suction head (6).

8. The tip decapping mechanism according to claim 4, characterized in that: The horizontal motion assembly comprises a driving mechanism and a pushing block (7), wherein the pushing block (7) is driven by the driving mechanism to move left and right, and the rear end of the cap removal clamp assembly (4) passes through the fixing frame (2) and abuts against the front side of the pushing block (7); The front side of the pushing block (7) is formed with an inclined surface (71) and a platform surface (72) connected to the inclined surface (71).

9. The tip decapping mechanism according to claim 8, characterized in that: The driving mechanism comprises a second driving motor (8), a driving gear (81), a driven gear (82) and a transmission toothed belt (83), wherein the output shaft of the second driving motor (8) is fixedly connected to the driving gear (81), and the driving gear (81) and the driven gear (82) are respectively meshed and mounted on the inner ends of the transmission toothed belt (83); The pushing block (7) is fixedly connected to the conveying toothed belt (83) via a connecting plate (831).

10. The tip decapping mechanism according to claim 8, characterized in that: The cap removal clamp assembly (4) comprises a buffer roller (43), wherein the buffer roller (43) abuts against the front side of the push block (7) and can roll along the front side of the push block (7).

Images