CN219906949U - Automatic cap opener for test tube with cap - Google Patents

Abstract

The utility model relates to the technical field of laboratory equipment, in particular to an automatic cover opener for a test tube with a cover, which comprises a support table, a power assembly arranged on a conductive slip ring support table, a rotating assembly rotatably arranged on the conductive slip ring power assembly, and a switch assembly for controlling the conductive slip ring power assembly and the conductive slip ring rotating assembly; the conductive slip ring rotating assembly comprises a rotating piece, a plurality of electric cylinders and a clamping arc plate, wherein the rotating piece is arranged on the conductive slip ring power assembly in a rotating mode, the electric cylinders are arranged on the end face, far away from the conductive slip ring power assembly, of the conductive slip ring rotating piece, the clamping arc plate is arranged on a telescopic rod of each conductive slip ring electric cylinder, the conductive slip ring electric cylinders are distributed circumferentially around a rotating axis of the conductive slip ring rotating piece, and the conductive slip ring clamping arc plate is arranged at one end, close to the rotating axis, of each conductive slip ring electric cylinder. The utility model has the effects of reducing the labor consumption and improving the detection efficiency.

Description

Automatic cap opener for test tube with cap

Technical Field

The utility model relates to the technical field of laboratory equipment, in particular to an automatic cover opener for a test tube with a cover.

Background

The sterile laboratory is an important component of a medical testing laboratory in which many test samples are tested and in order to ensure a clean environment in the sterile laboratory, test tube samples are entered into the sterile laboratory, which require the use of test tubes with screw caps.

In the test tube with a screw cap, an operator needs to operate with both hands to unscrew the screw cap of the test tube, hold the open test tube with one hand, sample with the other hand, or add a detection reagent to the test tube.

During the application process, the following steps are found: the test tube is unscrewed to operating personnel's both hands, needs to exert sufficient effort to the screw thread lid, and when detecting in batches, unscrewed screw thread lid in a large number of ground for a long time, the manual work consumes greatly, makes operating personnel's both hands tired easily, leads to detection efficiency lower.

Disclosure of Invention

In order to reduce the labor consumption and improve the detection efficiency, the utility model provides an automatic cover opener for a test tube with a cover.

The utility model provides an automatic cover opener for a test tube with a cover, which adopts the following technical scheme that:

an automatic cover opener for a test tube with a cover comprises a support table, a power assembly arranged on the support table, a rotating assembly rotatably arranged on the power assembly and a switch assembly for controlling the power assembly and the rotating assembly;

the rotating assembly comprises a rotating part arranged on the power assembly in a rotating mode, a plurality of electric cylinders arranged on the end face of the power assembly far away from the rotating part, and clamping arc plates arranged on telescopic rods of the electric cylinders, wherein the electric cylinders are circumferentially distributed around the rotating axis of the rotating part, and the clamping arc plates are arranged at one ends, close to the rotating axis, of the electric cylinders.

Through adopting above-mentioned technical scheme, the test tube is held to the singlehanded, make the screw thread lid of test tube be close to rotating assembly, test tube and rotating assembly's central axis coincidence, switch module control electric jar earlier, electric jar operation makes the telescopic link lengthen, polylith clamp arc board butt is on screw thread lid's outer wall, switch module control power module again, make power module drive rotate the piece forward rotation, drive screw thread lid forward rotation through electric jar and clamp arc board, conveniently separate screw thread lid and test tube, absorb the sample or add the detect reagent in the test tube after, be close to screw thread lid with the test tube again, switch module control power module, make power module drive rotate the piece counter-rotating, test tube and screw thread lid screw together, switch module control electric jar again, electric jar operation makes the telescopic link shorten, clamp arc board and screw thread lid separation, replace the manual work to accomplish the operation of rotating screw thread lid, reduce artifical consumption, improve detection efficiency.

Optionally, the switch assembly includes the setting is in the rotating member is kept away from trigger button on the power component terminal surface, with trigger button electric connection's forward control circuit, set up subaerial pedal ware and with pedal ware electric connection's reverse control circuit, forward control circuit with reverse control circuit respectively with electric jar electric connection, forward control circuit with reverse control circuit respectively with power component electric connection.

Through adopting above-mentioned technical scheme, with screw cap butt behind the trigger button, trigger button to forward control circuit transmission information, forward control circuit controls the electric jar operation earlier, make the telescopic link of electric jar grow, forward control circuit again controls power component operation, make power component drive rotate the piece forward rotation, after the operating personnel pedal the ware, the ware is stepped on to the reverse control circuit transmission information, reverse control circuit controls power component operation earlier, make power component drive rotate the piece reverse rotation, reverse control circuit again controls the electric jar operation, make the telescopic link of electric jar shorten.

Optionally, the power component includes that detachable connection is in regulation installed part on the stand, set up power shell on the regulation installed part, set up motor in the power shell, with the reduction gear that the motor rotates to be connected and set up electrically conductive sliding ring on the reduction gear, the rotation piece rotates to set up on the reduction gear, forward control circuit with reverse control circuit respectively with motor electric connection.

Through adopting above-mentioned technical scheme, the power shell can dismantle through adjusting the installed part and connect on the support bench, forward control circuit can control the motor operation, drive through the reduction gear and rotate the forward rotation of piece, reverse control circuit can control the motor reverse run, drive through the reduction gear and rotate the piece reverse rotation, when the reduction gear drives to rotate the piece rotatory, make forward control circuit can with motor electric connection through electrically conductive sliding ring, reverse control circuit can with electric cylinder electric connection, external power source can be for the electric cylinder power supply.

Optionally, the bracket platform comprises a base and a supporting rod vertically arranged on the base;

the adjusting installation piece comprises an adjusting sleeve sleeved on the supporting rod, a fastening knob in threaded connection with the adjusting sleeve and a fastening plate arranged on the threaded knob in a rotating mode, the fastening plate is arranged in the adjusting sleeve, and the power shell is arranged on the outer wall of the adjusting sleeve.

Through adopting above-mentioned technical scheme, the adjusting collar cover is established on branch, and forward rotation fastening knob makes the fastening plate remove to the direction that is close to branch, and fastening plate and branch butt can be fixed the adjusting collar on branch, and reverse rotation fastening knob makes the fastening plate remove to the direction of keeping away from branch, and fastening plate and branch separation make the adjusting collar can drive the power shell and remove along branch, conveniently adjusts the distance between power shell and the base.

Optionally, an installation slot is formed in the end face, far away from the power component, of the rotating piece, the central axis of the installation slot coincides with the rotation axis of the rotating piece, the circumference of the electric cylinder is arranged on the inner wall of the installation slot, and the trigger key is arranged at the bottom of the installation slot;

the test tube fixing device is characterized by further comprising a sliding positioning assembly arranged on the support rod, wherein when the test tube is arranged on the sliding positioning assembly, the central axis of the test tube coincides with the central axis of the mounting slot, and the test tube can move along the central axis.

Through adopting above-mentioned technical scheme, the central axis of installation slot coincides with the rotation axis of rotor, and when jar and trigger button set up in the installation slot, drive jar and trigger button are rotatory around the central axis of installation slot, and the installation slot can play the positioning action, and cooperation slip positioning assembly fixes a position the test tube, makes the central axis of test tube coincide with the central axis of installation slot, and the test tube removes along the central axis, is convenient for the test tube insert in the installation slot.

Optionally, the sliding positioning component includes a sliding positioning piece movably arranged on the supporting rod and a displacement limiting piece detachably connected on the supporting rod for limiting the sliding positioning piece;

the sliding positioning piece comprises a positioning semi-ring which is used for being abutted against the test tube.

Through adopting above-mentioned technical scheme, test tube butt makes the slip setting element fix a position the test tube in the location semi-ring, and when the central axis of test tube and the central axis coincidence of installation slot, can drive the test tube through the slip setting element and follow branch and remove, and displacement limiting part can prescribe a limit to the range of motion of slip setting element, makes the slip setting element can not too be close to the base, and when test tube bottom butt on the base, the location semi-ring always butt is in the same position with the specification test tube, the test tube of being convenient for inserts the installation slot.

Optionally, the displacement limiter comprises a limit sleeve sleeved on the supporting rod, a fixed knob screwed on the limit sleeve and a fixed plate rotatably arranged on the fixed knob, wherein the fixed plate is arranged in the limit sleeve.

Through adopting above-mentioned technical scheme, branch inserts and establishes in the stop collar, and rotatory fixed knob drives the fixed plate and removes to the direction that is close to branch, makes on fixed plate and the branch butt, through the cooperation of stop collar, fixed plate and fixed knob, fixes the stop collar on branch, and reverse rotation fixed knob makes fixed plate and branch separation, can conveniently adjust the position of displacement limiter on branch.

Optionally, the sliding positioning piece is in including the cover is established sliding sleeve on the branch, setting up locating lever and threaded connection on the sliding sleeve outer wall are in the locating lever is kept away from adjusting screw on the sliding sleeve one end, the location semi-ring sets up adjusting screw keeps away from the one end of locating lever.

Through adopting above-mentioned technical scheme, branch inserts and establishes in the slip cap, and the locating lever can conveniently follow branch through the slip cap and remove, and rotatory location semi-ring makes adjusting screw rotate, can conveniently change adjusting screw and insert the length of establishing on the locating lever, and then adjusts the distance between location semi-ring and the branch, the test tube of different pipe diameters of being convenient for, the butt is on the location semi-ring after, the central axis of test tube coincides with the central axis of installation slot, makes the test tube of butt on the location semi-ring follow the central axis of installation slot and removes.

In summary, the present utility model includes at least one of the following beneficial technical effects:

1. through setting up a support stand, power pack, rotating assembly, rotating part, the electric jar, clamp the arc board and switch assembly, hold the test tube by one hand, make the screw cap of test tube be close to rotating assembly, the test tube coincides with the central axis of rotating assembly, the switch assembly controls the electric jar first, the electric jar operates and makes the telescopic link lengthen, the arc board is pressed against on the outer wall of screw cap to the polylith clamp, the switch assembly again controls the power pack, make the power pack drive rotating part forward rotation, drive screw cap forward rotation through electric jar and clamp the arc board, conveniently separate screw cap from test tube, absorb the sample or add the detection reagent in the test tube, get close to screw cap with the test tube again, switch assembly controls the power pack, make the power pack drive rotating part reverse rotation, test tube and screw cap screw together, switch assembly control electric jar again, the electric jar operation makes the telescopic link shorten, clamp the arc board and screw cap separate, replace the manual work to accomplish the operation of rotating screw cap, reduce the manual consumption, improve detection efficiency;

2. the trigger button, the forward control circuit, the pedal and the reverse control circuit are arranged, the thread cover is abutted against the trigger button, the trigger button transmits information to the forward control circuit, the forward control circuit firstly controls the electric cylinder to operate, the telescopic rod of the electric cylinder is lengthened, the forward control circuit further controls the power assembly to operate, the power assembly drives the rotating member to rotate forward, the pedal is stepped on by an operator to transmit information to the reverse control circuit, the reverse control circuit firstly controls the power assembly to operate, the power assembly drives the rotating member to rotate reversely, and the reverse control circuit further controls the electric cylinder to operate, so that the telescopic rod of the electric cylinder is shortened;

3. through setting up displacement limiter, slip setting element and location semi-ring, test tube butt makes slip setting element fix a position the test tube in the semi-ring of location, and when the central axis of test tube and the central axis coincidence of installation slot, can drive the test tube through slip setting element and remove along branch, displacement limiter can inject the range of motion of slip setting element, makes slip setting element can not too be close to the base, and when test tube bottom butt on the base, the semi-ring of location always butt is in the same position with the specification test tube, and the test tube of being convenient for inserts the installation slot.

Drawings

Fig. 1 is a schematic structural view of an automatic cap opener for a test tube with a cap according to an embodiment of the present utility model.

Fig. 2 is a schematic cross-sectional view of an automatic cap opener for a test tube with a cap according to an embodiment of the present utility model.

Fig. 3 is a circuit schematic of the switch assembly.

Reference numerals illustrate: 1. a support stand; 11. a base; 12. a support rod; 2. a power assembly; 21. adjusting the mounting member; 211. an adjusting sleeve; 212. fastening a knob; 213. a fastening plate; 22. a power shell; 23. a motor; 24. a speed reducer; 25. a conductive slip ring; 3. a rotating assembly; 31. a rotating member; 311. installing a slot; 32. an electric cylinder; 33. clamping an arc plate; 4. a switch assembly; 41. triggering a key; 42. a forward control circuit; 43. a pedal; 44. a reverse control circuit; 5. a slide positioning assembly; 51. a displacement limiter; 511. a limit sleeve; 512. fixing a knob; 513. a fixing plate; 52. sliding the positioning piece; 521. a sliding sleeve; 522. a positioning rod; 523. adjusting a screw; 524. and positioning the semi-ring.

Detailed Description

The utility model is described in further detail below with reference to fig. 1-3.

The embodiment of the utility model discloses an automatic cover opener for a test tube with a cover. Referring to fig. 1 and 2, an automatic cap opener for a test tube with a cap includes a stand 1, a power assembly 2 detachably connected to the stand 1, a rotating assembly 3 rotatably provided to the power assembly 2, a switch assembly 4 for controlling the power assembly 2 and the rotating assembly 3, and a slide positioning assembly 5 detachably connected to the stand 1.

The stand 1 comprises a rectangular plate-shaped base 11 and a supporting rod 12 vertically fixedly connected to the top surface of the base 11, the supporting rod 12 is a rectangular rod, the supporting rod 12 is fixedly connected to one end of the base 11, and in another embodiment, the supporting rod 12 can also be a round rod.

Referring to fig. 1 and 2, the power assembly 2 includes an adjustment mount 21 detachably coupled to the strut 12, a power housing 22 fixedly coupled to the adjustment mount 21, a motor 23 disposed within the power housing 22, a decelerator 24 fixedly coupled to an output shaft of the motor 23, and a conductive slip ring 25 disposed on an output shaft of the decelerator 24.

The adjusting and mounting piece 21 comprises an adjusting sleeve 211 movably sleeved on the supporting rod 12, a fastening knob 212 in threaded connection with one end of the adjusting sleeve 211 and a fastening plate 213 in rotary connection with one end of the fastening knob 212, wherein the adjusting sleeve 211 is rectangular frame-shaped, and the fastening plate 213 is arranged in the adjusting sleeve 211.

The support rod 12 is inserted into the adjusting sleeve 211, the fastening knob 212 is rotated to drive the fastening plate 213 to move towards the direction approaching the support rod 12, the fastening plate 213 is abutted on the support rod 12, and the adjusting sleeve 211 can be fixed on the support rod 12; the fastening knob 212 is rotated to drive the fastening plate 213 to move in a direction away from the support rod 12, the fastening plate 213 is separated from the support rod 12, the position of the adjusting sleeve 211 on the support rod 12 can be conveniently changed, and then the relative positions of the power shell 22 and the rotating assembly 3 on the support rod 12 are adjusted, so that the distance between the rotating assembly 3 and the base 11 is changed.

Referring to fig. 1 and 2, the power shell 22 is fixedly connected to an outer wall of the adjusting sleeve 211, which is far away from the fastening knob 212, the power shell 22 is a cylindrical shell with a hollow interior, the motor 23 is fixedly connected to an inner wall of the power shell 22, the speed reducer 24 is fixedly connected to an inner wall of the power shell 22, an input shaft of the speed reducer 24 is fixedly connected to an output shaft of the motor 23 through a coupling, an output shaft of the speed reducer 24 is fixedly connected to the rotating assembly 3, a rotating part of the conductive slip ring 25 is fixedly connected to an output shaft of the speed reducer 24, and a fixing part of the conductive slip ring 25 is fixedly connected to the power shell 22.

The power shell 22 can protect the motor 23 and the speed reducer 24, and the conductive slip ring 25 can protect electric wires and signal wires between the power assembly 2 and the rotating assembly 3, so that the rotating assembly 3 can rotate at a large angle relative to the power assembly 2.

Referring to fig. 1 and 2, the rotating assembly 3 includes a rotating member 31 fixedly connected to an output shaft of the speed reducer 24, a plurality of electric cylinders 32 disposed on the rotating member 31, and a clamping arc plate 33 fixedly connected to a piston rod of the electric cylinders 32, wherein the rotating member 31 is cylindrical, a mounting slot 311 is formed in one end of the rotating member 31 far from the power shell 22, the mounting slot 311 is a cylindrical slot, a central axis of the mounting slot 311 coincides with a rotation axis of the rotating member 31, the plurality of electric cylinders 32 are circumferentially distributed on a slot wall of the mounting slot 311 around the rotation axis of the rotating member 31, and a moving direction of the piston rod of the electric cylinders 32 is perpendicular to the central axis of the mounting slot 311.

The outer arc plate fixedly connected at one end of the electric cylinders 32, which is close to the rotation axis of the rotating member 31, of the clamping arc plates 33 on the electric cylinders 32 can form a ring shape, and a rubber layer is arranged on the inner arc plate surface of the clamping arc plates 33, so that the clamping arc plates 33 on the electric cylinders 32 fix the test tube cover and reduce the damage probability to the test tube cover.

Referring to fig. 2 to 3, the switch assembly 4 includes a trigger button 41 disposed on an end surface of the rotating member 31 remote from the power assembly 2, a forward control circuit 42 electrically connected to the trigger button 41, a pedal 43 disposed on the ground, and a reverse control circuit 44 electrically connected to the pedal 43.

After the screw cap is abutted against the trigger button 41, the trigger button 41 transmits information to the forward control circuit 42, the forward control circuit 42 controls the electric cylinder 32 to operate firstly, the telescopic rod of the electric cylinder 32 is lengthened, the forward control circuit 42 controls the power assembly 2 to operate, the power assembly 2 drives the rotating member 31 to rotate forwards, after an operator steps on the pedal 43, the pedal 43 transmits information to the reverse control circuit 44, the reverse control circuit 44 controls the power assembly 2 to operate firstly, the power assembly 2 drives the rotating member 31 to rotate reversely, and the reverse control circuit 44 controls the electric cylinder 32 to operate again, so that the telescopic rod of the electric cylinder 32 is shortened.

Referring to fig. 1 and 2, the slide positioning assembly 5 includes a slide positioning member 52 slidably disposed on the strut 12 and a displacement limiting member 51 detachably coupled to the strut 12, the displacement limiting member 51 limiting a movable range of the slide positioning member 52. The displacement limiter 51 comprises a limit sleeve 511 sleeved on the support rod 12, a fixed knob 512 screwed on one end of the limit sleeve 511, and a fixed plate 513 rotatably arranged on one end of the fixed knob 512, wherein the fixed plate 513 is arranged in the limit sleeve 511.

The support rod 12 is inserted into the limit sleeve 511, the fixing knob 512 is rotated to drive the fixing plate 513 to move towards the direction close to the support rod 12, and the fixing plate 513 is abutted against the support rod 12, so that the limit sleeve 511 can be fixed on the support rod 12; the fixing knob 512 is rotated to drive the fixing plate 513 to move away from the supporting rod 12, and the fixing plate 513 is separated from the supporting rod 12, so that the position of the limiting sleeve 511 on the supporting rod 12 can be conveniently changed.

Referring to fig. 1 and 2, the sliding positioning member 52 includes a sliding sleeve 521 provided on the support rod 12, a positioning rod 522 vertically fixed to an outer wall of the sliding sleeve 521, an adjusting screw 523 screwed to an end of the positioning rod 522 remote from the sliding sleeve 521, and a positioning half ring 524 fixed to an end of the adjusting screw 523 remote from the positioning rod 522.

According to the test tubes with different tube diameters, the positioning semi-ring 524 matched with the test tubes can be conveniently replaced, the positioning semi-ring 524 is rotated, the length of the adjusting screw 523 on the positioning rod 522 is changed, and after the test tubes are abutted on the positioning semi-ring 524, the central axis of the test tubes coincides with the central axis of the mounting slot 311.

In this embodiment, two displacement limiting members 51 are provided, and a sliding positioning member 52 is disposed between the two displacement limiting members 51, so that a certain distance is kept between the sliding positioning member 52 and the base 11, so that the middle of the test tube is conveniently abutted on the positioning half ring 524, and when the test tube and the sliding positioning member 52 move in a direction approaching to the rotating member 31, the screw cap of the test tube is prevented from being excessively inserted into the mounting slot 311.

The embodiment of the utility model provides an automatic cover opener for a test tube with a cover, which comprises the following implementation principles: the test tube is held by one hand, the test tube with the screw cap is abutted on the positioning semi-ring 524, under the condition that the central axis of the test tube is overlapped with the rotation axis of the rotating member 31, the test tube and the sliding positioning member 52 are moved towards the direction close to the rotating member 31, the screw cap of the test tube is inserted into the mounting slot 311, the screw cap is abutted with the trigger button 41, the forward control circuit 42 controls the electric cylinders 32 to move forward, the clamping arc plates 33 of the electric cylinders 32 fix the screw cap on the rotating member 31, the forward control circuit 42 controls the motor 23 to move again, the speed reducer 24 drives the rotating member 31 to rotate, the rotating member 31 drives the screw cap to rotate, the screw cap is separated from the test tube, the pedal 43 is pressed, the reverse control circuit 44 controls the motor 23 to move reversely, the screw cap is screwed on the test tube, the reverse control circuit 44 controls the electric cylinders 32 to move again, the clamping arc plates 33 release the screw cap, manual rotation of the screw cap is not needed, manual consumption is reduced, and detection efficiency is improved.

The above embodiments are not intended to limit the scope of the present utility model, and therefore: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims (8)

1. An automatic cap opener for a test tube with a cap is characterized in that: comprises a support table (1), a power assembly (2) arranged on the support table (1), a rotating assembly (3) rotatably arranged on the power assembly (2) and a switch assembly (4) for controlling the power assembly (2) and the rotating assembly (3);

the rotating assembly (3) comprises a rotating part (31) arranged on the power assembly (2), a plurality of electric cylinders (32) arranged on the end face of the power assembly (2) and clamping arc plates (33) arranged on telescopic rods of the electric cylinders (32), wherein the electric cylinders (32) are circumferentially distributed around the rotating axis of the rotating part (31), and the clamping arc plates (33) are arranged at one ends of the electric cylinders (32) close to the rotating axis.

2. The automatic cap opener for capped test tubes of claim 1, wherein: the switch assembly (4) comprises a trigger key (41) arranged on the end face of the rotating piece (31) away from the power assembly (2), a forward control circuit (42) electrically connected with the trigger key (41), a pedal (43) arranged on the ground and a reverse control circuit (44) electrically connected with the pedal (43), wherein the forward control circuit (42) and the reverse control circuit (44) are respectively electrically connected with the electric cylinder (32), and the forward control circuit (42) and the reverse control circuit (44) are respectively electrically connected with the power assembly (2).

3. An automatic cap opener for capped test tubes as defined in claim 2, wherein: the power assembly (2) comprises an adjusting installation piece (21) which is detachably connected to the support table (1), a power shell (22) which is arranged on the adjusting installation piece (21), a motor (23) which is arranged in the power shell (22), a speed reducer (24) which is rotationally connected with the motor (23) and a conductive slip ring (25) which is arranged on the speed reducer (24), wherein the rotating piece (31) is rotationally arranged on the speed reducer (24), and the forward control circuit (42) and the reverse control circuit (44) are respectively and electrically connected with the motor (23).

4. An automatic cap opener for capped test tubes as defined in claim 3, wherein: the bracket table (1) comprises a base (11) and a supporting rod (12) vertically arranged on the base (11);

the adjusting installation piece (21) comprises an adjusting sleeve (211) sleeved on the supporting rod (12), a fastening knob (212) in threaded connection with the adjusting sleeve (211) and a fastening plate (213) rotatably arranged on the fastening knob (212), wherein the fastening plate (213) is arranged in the adjusting sleeve (211), and the power shell (22) is arranged on the outer wall of the adjusting sleeve (211).

5. The automatic cap opener for capped test tubes of claim 4, wherein: an installation slot (311) is formed in the end face, far away from the power assembly (2), of the rotating piece (31), the central axis of the installation slot (311) coincides with the rotation axis of the rotating piece (31), the electric cylinder (32) is circumferentially arranged on the inner wall of the installation slot (311), and the trigger key (41) is arranged at the bottom of the installation slot (311);

also comprises a sliding positioning component (5) arranged on the supporting rod (12), when the test tube is arranged on the sliding positioning component (5), the central axis of the test tube coincides with the central axis of the mounting slot (311), and the test tube can move along the central axis.

6. The automatic cap opener for capped test tubes of claim 5, wherein: the sliding positioning assembly (5) comprises a sliding positioning piece (52) movably arranged on the supporting rod (12) and a displacement limiting piece (51) detachably connected to the supporting rod (12) for limiting the sliding positioning piece (52);

the slide positioning member (52) includes a positioning half ring (524) for abutting the test tube.

7. The automatic cap opener for capped test tubes of claim 6, wherein: the displacement limiting part (51) comprises a limiting sleeve (511) sleeved on the supporting rod (12), a fixing knob (512) in threaded connection with the limiting sleeve (511) and a fixing plate (513) rotatably arranged on the fixing knob (512), and the fixing plate (513) is arranged in the limiting sleeve (511).

8. The automatic cap opener for capped test tubes of claim 7, wherein: the sliding positioning piece (52) comprises a sliding sleeve (521) sleeved on the supporting rod (12), a positioning rod (522) arranged on the outer wall of the sliding sleeve (521) and an adjusting screw (523) in threaded connection with one end of the positioning rod (522) away from the sliding sleeve (521), and the positioning semi-ring (524) is arranged at one end of the adjusting screw (523) away from the positioning rod (522).