阅读说明：本技术 一种空间不足场合试管夹持设备及方法 (Test tube clamping device and method for occasions with insufficient space ) 是由 孙启鹏 张立海 董飒英 王吉宁 王峰 苏桂香 袁圣磊 于 2019-07-18 设计创作，主要内容包括：一种空间不足场合试管夹持设备及方法,凸轮(4)旋转并与滚动轴承(5)间歇的接触使两个夹爪体(9)张开,复位模块(7)驱动张开后的夹爪体(9)闭合,凸轮(4)连接有齿轮轴(8),齿轮轴(8)上端连接有扇形感应件(2),扇形感应件(2)上对称设有两个通光口(14),通光口(14)将扇形感应件(2)分隔成两个扇形区域；当扇形感应件(2)的遮光边沿靠近夹爪感应器(3)时,夹爪感应器(3)输出上升沿信号,根据上升沿信号控制步进马达(11)的停止；当扇形感应件(2)的遮光边沿远离夹爪感应器(3)时,夹爪感应器(3)输出下降沿信号,根据下降沿信号控制步进马达(11)的停止。该试管夹持设备,使得同体积下夹紧力增大,采用扇形感应片,夹爪的开合信号明确,杜绝混乱,特别适用于空间不足,无法使用气动夹紧,又需要较大的夹紧力的场合。(A test tube clamping device and method for occasions with insufficient space are disclosed, wherein a cam (4) rotates and is in intermittent contact with a rolling bearing (5) to enable two clamping jaw bodies (9) to be opened, a reset module (7) drives the opened clamping jaw bodies (9) to be closed, the cam (4) is connected with a gear shaft (8), the upper end of the gear shaft (8) is connected with a fan-shaped sensing piece (2), two light through ports (14) are symmetrically arranged on the fan-shaped sensing piece (2), and the fan-shaped sensing piece (2) is divided into two fan-shaped areas by the light through ports (14); when the shading edge of the fan-shaped induction piece (2) is close to the clamping jaw inductor (3), the clamping jaw inductor (3) outputs a rising edge signal, and the stop of the stepping motor (11) is controlled according to the rising edge signal; when the shading edge of the fan-shaped induction piece (2) is far away from the clamping jaw inductor (3), the clamping jaw inductor (3) outputs a falling edge signal, and the stop of the stepping motor (11) is controlled according to the falling edge signal. This test tube centre gripping equipment for with the clamp force increase under the volume, adopt fan-shaped response piece, the signal of opening and shutting of clamping jaw is clear and definite, stops the confusion, and the specially adapted space is not enough, can't use the pneumatic clamp tight, needs the occasion of great clamp force again.)

The test tube clamping equipment is characterized by comprising a gear pair (1), a fan-shaped sensing piece (2), a clamping jaw sensor (3), a cam (4), a rolling bearing (5), a clamping jaw module (6) and a reset module (7); a gear shaft (8) is arranged at the center of the gear pair (1), the gear shaft (8) penetrates through the center of the gear pair (1), the upper end of the gear shaft (8) is connected with the fan-shaped induction part (2), the clamping jaw inductor (3) is arranged on the side part of the fan-shaped induction part (2), and the fan-shaped induction part (2) rotates at an induction gap of the clamping jaw inductor (3); gear shaft (8) lower extreme is connected cam (4), cam (4) both sides are equipped with antifriction bearing (5), antifriction bearing (5) are connected clamping jaw module (6), clamping jaw module (6) include two clamping jaw bodies (9), clamping jaw body (9) are connected reset module (7), cam (4) are rotatory and make two with antifriction bearing (5) intermittent type's contact clamping jaw body (9) open, the clamping jaw body (9) after reset module (7) drive is opened are closed.

The test tube clamping device for the occasion with insufficient space as claimed in claim 1, wherein the gear shaft (8) is connected with a gear seat (10), a stepping motor (11) is arranged at the upper end of the gear seat (10), the stepping motor (11) is provided with a driving shaft (12) and a driving gear (13), the driving shaft (12) penetrates through the gear seat (10), the driving gear (13) is connected at the tail end of the driving shaft (12), and the driving gear (13) is meshed with the gear pair (1).

The test tube clamping device for the occasion with insufficient space as claimed in claim 2, wherein the clamping jaw sensor (3) is connected to the upper end of the gear seat (10), the sector sensing piece (2) is positioned above the gear seat (10), the clamping jaw sensor (3) adopts a photoelectric sensor, and the gear shaft (8) drives the sector sensing piece (2) to rotate at the sensing notch of the clamping jaw sensor (3).

The test tube clamping device for the occasion with insufficient space as claimed in claim 3, wherein the sector sensing member (2) is symmetrically provided with two light through ports (14), and the light through ports (14) divide the sector sensing member (2) into two sector areas;

the cam (4) is oval, and two protruding edges of the cam (4) are vertically aligned with the protruding edges of the fan-shaped sensing piece (2).

The test tube clamping device for the occasion with insufficient space as claimed in claim 2, wherein a supporting block (15) is connected to the lower end of the gear seat (10), a mounting opening (16) is formed on the supporting block (15), and the gear pair (1) rotates around the mounting opening (16); the side part of the lower end of the supporting block (15) is connected with an opening and closing guide rail (17), and the clamping jaw body (9) is connected with the opening and closing guide rail (17).

The test tube clamping device for the occasion with insufficient space as claimed in claim 5, wherein a material shortage sensor (18) is connected inside the mounting opening (16), the clamping jaw body (9) is provided with a material shortage sensing part (19), and the material shortage sensing part (19) moves at a sensing gap of the material shortage sensor (18).

The test tube holding device for the occasion of insufficient space as claimed in claim 1, wherein the reset module (7) comprises a spring shaft (20) and a reset spring (21), and the reset spring (21) is sleeved on the spring shaft (20); the clamping jaw body (9) is provided with an inserting part (22), and the spring shaft (20) penetrates through the inserting part (22).

The test tube clamping device for occasions with insufficient space as claimed in claim 5, wherein the lower end of the supporting block (15) is formed with a clamping portion (23), the reset module (7) comprises a spring shaft (20) and a reset spring (21), and two ends of the spring shaft (20) are connected with the clamping portion (23).

A test tube clamping method in the occasion with insufficient space is characterized in that a cam (4) rotates and is in intermittent contact with a rolling bearing (5) to open two clamping jaw bodies (9), and a reset module (7) drives the opened clamping jaw bodies (9) to be closed.

The test tube clamping method for the occasion of insufficient space according to claim 9, wherein the cam (4) is connected with a gear shaft (8), the upper end of the gear shaft (8) is connected with a fan-shaped sensing piece (2), two light through openings (14) are symmetrically formed in the fan-shaped sensing piece (2), and the light through openings (14) divide the fan-shaped sensing piece (2) into two fan-shaped areas;

when the shading edge of the fan-shaped induction piece (2) is close to the clamping jaw inductor (3), the clamping jaw inductor (3) outputs a rising edge signal, and the stop of the stepping motor is controlled according to the rising edge signal;

when the shading edge of the fan-shaped induction piece (2) is far away from the clamping jaw inductor (3), the clamping jaw inductor (3) outputs a falling edge signal, and the stop of the stepping motor is controlled according to the falling edge signal.