Unfolding and folding mechanism
A technology of clamping mechanism and transmission mechanism, which is applied in the field of separation and closing mechanism, can solve the problems of insufficient stability and precision, and achieve the effect of stable separation or closure
Inactive Publication Date: 2011-09-14
SUZHOU JIEMEI ELECTRONICS
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Problems solved by technology
[0002]In many existing devices, the separation and closing mechanism can be used to separate or close multiple clamped objects at the same time, such as the separation and closing mechanism of the enzyme immunoassay instrument, which is generally A structure in which four levers are used to move eight sample needles to separate and close at the same time, but this mechanism has insufficient stability and precision during operation
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[0014] Example: such as Figure 1 to Figure 4 As shown, a separation and closing mechanism for an enzyme immunoassay instrument includes two fixing seats 1, two rotating shafts 3 that are arranged in parallel in the two fixing seats 1, and two sliding shafts that are arranged in parallel with the above-mentioned rotating shafts 3. Rail 4, the part of the rotating shaft 3 located between the two fixed seats 1 is covered with a screw 5, the left half of the screw 5 has two positive thread segments 51, and the right half of the screw 5 has two reverse threads Segment 52, the axial length and pitch of the outer positive thread segment 51 (the first positive thread segment 51 from the left) among the two positive thread segments 51 is greater than that of the inner positive thread segment 51 (from the left) The axial length and pitch of the second positive thread segment), the axial length and pitch of the reverse thread segment 52 (the first reverse thread segment 52 counting from...
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The invention discloses an unfolding and folding mechanism, which comprises two fixed seats, at least one rotating shaft which is inserted into the two fixed seats and is driven by a drive motor and a sliding rail which is arranged parallel to the rotating shaft, wherein a screw rod is sleeved on the rotating shaft; the left half part of the screw rod is provided with at least one plus thread section, and the right half part of the screw rod is provided with at least one minus thread section; when more than two plus thread sections or minus thread sections are provided, the thread distance among the more than two plus thread sections is unequal to the thread distance among the more than two minus thread sections; each plus or minus thread section is provided with a nut which is correspondingly matched with the plus or minus thread section respectively; the nut is used for clamping a clamped object through a clamping mechanism; the clamping mechanism is in sliding fit with the sliding rail; and when the drive motor is operated, the screw rod can be used for driving the plus or minus thread section on the screw rod to uniformly fold or unfold. In the unfolding and folding mechanism, the screw rod is driven to rotate by the drive motor, so that the nut on the screw rod can be forwardly or reversely moved, and the clamped object can be uniformly and stably unfolded or folded.
Description
technical field [0001] The invention relates to an opening and closing mechanism. Background technique [0002] In many existing devices, multiple clamped objects can be separated or closed at the same time through the separation and closing mechanism. For example, the separation and closure mechanism of the enzyme immunoassay instrument generally uses four levers to move eight sample needles to separate at the same time. Closed structure, but there are deficiencies in the stability and precision of this mechanism during operation. Contents of the invention [0003] The object of the present invention is to provide a separation and closing mechanism, which drives the screw rod to rotate through the driving motor, so that the nut on the screw rod moves forward or reverse, so that the clamped objects can be separated or closed evenly and stably. [0004] The technical solution of the present invention is: an opening and closing mechanism, including two fixed seats, at least...
Claims
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IPC IPC(8): B25B11/00G01N33/53
Inventor 王振明
Owner SUZHOU JIEMEI ELECTRONICS