Automatic cover opening and closing mechanical arm of full-automatic digestion instrument

Abstract

The utility model relates to an automatic cover opening and closing mechanical arm of a full-automatic digestion instrument, which is characterized in that the mechanical arm forms a closed design through a sealing cover, the bottom of the mechanical arm is in transmission connection with a locking limiting block, a support is arranged in the mechanical arm, a sliding rail is arranged on the support, and a sliding block is arranged on the sliding rail in a sliding mode. The sliding block is in transmission connection with a transmission rod of the lifting lead screw motor, the sliding block is fixedly connected with a locking motor, the sliding block is fixedly connected with the top end of a lifting rod, the bottom end of the lifting rod is fixedly connected with a locking limiting block, a locking rod is arranged in the lifting rod, and the top end of the locking rod penetrates through the sliding block and is in transmission connection with the locking motor; the bottom end of the locking rod penetrates through the locking limiting block and is fixedly connected with the locking block, and the locking block is matched with a test tube cover support hanging buckle arranged on the test tube cover support so that a mechanical arm can grab or put down the test tube cover support. The skin burn caused by acid steam is avoided.

Description

Technical Field

[0001] The utility model relates to an automatic cover opening and closing mechanical arm of a full-automatic digestion instrument. Background Art

[0002] Fully automatic digesters essentially automate the wet digestion process. However, adding caps to the test tubes during the digestion process is still a manual process. This process generates large amounts of acid vapor within the test tubes. This is extremely dangerous for operators, as the acid vapor can burn their skin if they are not careful. Utility Model Content

[0003] The utility model provides an automatic cover opening and closing mechanical arm for a fully automatic digestion instrument, which adopts a closed design to isolate acid gas outside the machine and can automatically add and remove the cover in an acid vapor environment to avoid acid vapor burns to the skin.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A mechanical arm for automatically opening and closing a cover of a fully automatic digestion instrument, characterized in that: the mechanical arm is sealed by a sealing cover to isolate acid gas, and the bottom of the mechanical arm is in transmission connection with a locking limit block to allow the locking limit block to move;

[0006] The top end of the locking rod is connected with the sliding block, and the bottom end of the locking rod is connected with the locking block. The locking rod drives the locking block to rotate, and the locking block cooperates with the test tube cover bracket hook provided on the test tube cover bracket, so that the mechanical arm can grab or put down the test tube cover bracket.

[0007] The automatic opening and closing cover mechanical arm of the fully automatic digestion instrument, wherein: a first sealing ring is provided at the connection between the locking rod and the slider, a second sealing ring is provided at the connection between the lifting rod and the sealing cover, and a third sealing ring is provided on the inner wall of the bottom end of the lifting rod. The first sealing ring, the second sealing ring and the third sealing ring are used to isolate acid gas.

[0008] The automatic opening and closing cover mechanical arm of the fully automatic digestion instrument, wherein: a lifting positioning optical coupler is provided below the lifting screw motor for lifting and positioning, and a locking positioning optical coupler is provided below the locking motor for rotation positioning.

[0009] The automatic cover opening and closing mechanical arm of the fully automatic digestion instrument, wherein: the test tube cover bracket hanging buckle is provided with a long strip opening slot for the locking block to slide into.

[0010] The automatic cover opening and closing mechanical arm of the fully automatic digestion instrument, wherein: the sealing cover is made of corrosion-resistant material and sprayed with Teflon coating, the bracket is made of aluminum alloy surface sprayed with Teflon coating, and the test tube cover bracket is made of aluminum alloy surface sprayed with Teflon coating.

[0011] The beneficial effects of the utility model include: a closed design is adopted to isolate the acid gas outside the machine, and automatic capping and uncapping can be completed in an acid vapor environment, thereby preventing the acid vapor from burning the skin. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is the structural diagram of the automatic cover opening and closing mechanical arm of the fully automatic digestion instrument.

[0013] Figure 2 This is the internal main structure diagram of the automatic cover opening and closing mechanical arm of the fully automatic digestion instrument.

[0014] Figure 3 This is a side view of the internal structure of the automatic cover opening and closing mechanical arm of the fully automatic digestion instrument.

[0015] Figure 4 This is a cross-sectional structural diagram of the automatic cover opening and closing mechanical arm of the fully automatic digestion instrument.

[0016] Figure 5 This is a structural diagram of the automatic lid opening and closing robot arm of the fully automatic digestion instrument without grabbing the test tube lid bracket.

[0017] Figure 6 This is a cross-sectional structural diagram of the automatic lid opening and closing robot arm of the fully automatic digestion instrument without grabbing the test tube lid bracket.

[0018] Figure 7 This is a structural diagram of the automatic cover opening and closing robot arm of the fully automatic digestion instrument grabbing the test tube cover bracket.

[0019] Figure 8 This is a cross-sectional structural diagram of the automatic cover opening and closing robot arm of the fully automatic digestion instrument grabbing the test tube cover bracket.

[0020] Explanation of the reference numerals; 1-robotic arm; 2-sealing cover; 3-locking limit block; 4-lifting screw motor; 5-locking motor; 6-locking positioning optical coupler; 7-bracket; 8-lifting positioning optical coupler; 9-slide rail; 10-slider; 11-lifting rod; 12-locking rod; 13-locking block; 14-first sealing ring; 15-second sealing ring; 16-third sealing ring; 17-test tube cover bracket; 18-test tube cover bracket buckle. DETAILED DESCRIPTION

[0021] like Figures 1 to 8 The figure shows an automatic opening and closing cover robotic arm of a fully automatic digestion instrument, characterized in that: the robotic arm 1 forms a closed design through a sealing cover 2 to isolate acid gas, the sealing cover 2 is made of corrosion-resistant material and sprayed with Teflon coating, and the bottom of the robotic arm 1 is transmission-connected to the locking limit block 3 for movement of the locking limit block 3.

[0022] A bracket 7 is provided in the robotic arm 1, and the bracket 7 is made of aluminum alloy with Teflon coating sprayed on the surface. A slide rail 9 is provided on the bracket 7, and a slider 10 is slidably provided on the slide rail 9. The slider 10 is transmission-connected to the transmission rod of the lifting screw motor 4 for lifting and lowering the slider 10. A lifting and positioning optical coupler 8 is provided below the lifting screw motor 4 for lifting and positioning. The slider 10 is fixedly connected to the locking motor 5, and the slider 10 is fixedly connected to the top end of the lifting rod 11. The bottom end of the lifting rod 11 is fixedly connected to the locking limit block 3. A locking rod 12 is provided in the lifting rod 11, and the top end of the locking rod 12 passes through the slider 10 and is transmission connected to the locking motor 5 for the locking rod 12 to rotate. A locking positioning optical coupler 6 is provided below the locking motor 5 for rotation positioning. The bottom end of the locking rod 12 passes through the locking limit block 3 and is fixedly connected to the locking block 13. The locking rod 12 drives the locking block 13 to rotate. The locking block 13 cooperates with the test tube cover bracket hook 18 provided on the test tube cover bracket 17 for the robotic arm 1 to grab or put down the test tube cover bracket 17. A long strip of opening groove is provided on the test tube cover bracket hook 18 for the locking block 13 to slide into. The test tube cover bracket 17 is made of aluminum alloy with Teflon coating sprayed on the surface.

[0023] A first sealing ring 14 is provided at the connection between the locking rod 12 and the slider 10, a second sealing ring 15 is provided at the connection between the lifting rod 11 and the sealing cover 2, and a third sealing ring 16 is provided on the inner wall of the bottom end of the lifting rod 11. The first sealing ring 14, the second sealing ring 15 and the third sealing ring 16 are used to isolate the acid gas.

[0024] In the embodiment, during the cover removal operation, the lifting screw motor 4 drives the slider 10 to slide downward on the slide rail 9, and the slider 10 drives the locking motor 5 and the lifting rod 11 to slide downward together. The lifting positioning optical coupler 8 is used to limit the lifting distance of the slider 10 driven by the lifting screw motor 4. When the preset descending distance is reached, that is, the locking limit block 3 is completely sleeved on the test tube cover bracket buckle 18, the lifting screw motor 4 stops operating, and the locking block 13 is inserted through the open slot on the test tube cover bracket buckle 18 at this time. The locking motor 5 drives the locking rod 12 to rotate in the lifting rod 11. The locking rod 12 drives the locking block 13 to rotate, and the locking positioning optical coupler 6 is used to limit the rotation angle of the locking rod 12 and the locking block 13. At this time, the locking block 13 rotates forward 90 degrees and is perpendicular to the opening slot, the locking motor 5 stops working, the lifting screw motor 4 starts working again, and drives the slider 10 to slide upward on the slide rail 9, and the locking block 13 drives the test tube cover bracket 17 to move upward together. When the preset rising distance is reached, the lifting screw motor 4 stops working again, the test tube cover is completely separated from the test tube, and the cover removal operation is completed.

[0025] When the lifting rod 11 is lowered, the locking block 13 is in the state of hooking the hook 18 of the test tube cover holder. When the preset lowering distance is reached, the test tube cover and the test tube are completely closed, the lifting rod motor 4 stops operating, the locking motor 5 drives the locking rod 12 to rotate in the lifting rod 11, and the locking rod 12 drives the locking block 13 to rotate. The locking block 13 rotates 90 degrees in the opposite direction, and the locking motor 5 stops operating. The lifting screw motor 4 drives the slider 10 to slide upward on the slide rail 9, and the locking block 13 slides out of the open slot, and the test tube cover holder 17 remains on the test tube rack. When the preset rising distance is reached, the lifting screw motor 4 stops operating again, and the covering operation is completed.

[0026] The above description is only illustrative of the present invention and not restrictive. Those skilled in the art will understand that many modifications, changes or equivalents may be made without departing from the spirit and scope defined by the claims, and all of them will fall within the scope of protection of the present invention.

Claims

1. A mechanical arm for automatically opening and closing the cover of a fully automatic digestion instrument, characterized by: The mechanical arm (1) forms a closed design through a sealing cover (2) for isolating acid gas, and the bottom of the mechanical arm (1) is transmission-connected with a locking limit block (3) for movement of the locking limit block (3); A bracket (7) is provided in the mechanical arm (1), a slide rail (9) is provided on the bracket (7), a slider (10) is provided on the slide rail (9), the slider (10) is connected to the transmission rod of the lifting screw motor (4) for the slider (10) to be lifted and lowered, the slider (10) is fixedly connected to the locking motor (5), the slider (10) is fixedly connected to the top end of the lifting rod (11), the bottom end of the lifting rod (11) is fixedly connected to the locking limit block (3), and a locking rod ( 12), the top end of the locking rod (12) passes through the slider (10) and is in transmission connection with the locking motor (5) for the locking rod (12) to rotate, the bottom end of the locking rod (12) passes through the locking limit block (3) and is fixedly connected with the locking block (13), the locking rod (12) drives the locking block (13) to rotate, and the locking block (13) cooperates with the test tube cover bracket hanging buckle (18) provided on the test tube cover bracket (17) for the robot arm (1) to grab or put down the test tube cover bracket (17).

2. The automatic cover opening and closing mechanical arm of a fully automatic digestion instrument according to claim 1, characterized in that: A first sealing ring (14) is provided at the connection between the locking rod (12) and the slider (10), a second sealing ring (15) is provided at the connection between the lifting rod (11) and the sealing cover (2), and a third sealing ring (16) is provided on the inner wall of the bottom end of the lifting rod (11). The first sealing ring (14), the second sealing ring (15) and the third sealing ring (16) are used to isolate acid gas.

3. The automatic cover opening and closing mechanical arm of a fully automatic digestion instrument according to claim 1, characterized in that: A lifting positioning optical coupler (8) is provided below the lifting screw motor (4) for lifting positioning, and a locking positioning optical coupler (6) is provided below the locking motor (5) for rotation positioning.

4. The automatic cover opening and closing mechanical arm of a fully automatic digestion instrument according to claim 1, characterized in that: The test tube cover support hook (18) is provided with a long strip opening slot for the locking block (13) to slide into.

5. The automatic cover opening and closing mechanical arm of a fully automatic digestion instrument according to claim 1, characterized in that: The sealing cover (2) is made of corrosion-resistant material and sprayed with Teflon coating, the bracket (7) is made of aluminum alloy with sprayed Teflon coating, and the test tube cover bracket (17) is made of aluminum alloy with sprayed Teflon coating.

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