CN111957370A - Method for picking and placing end cover of vessel for clinical laboratory - Google Patents
Method for picking and placing end cover of vessel for clinical laboratory Download PDFInfo
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- CN111957370A CN111957370A CN202010801845.6A CN202010801845A CN111957370A CN 111957370 A CN111957370 A CN 111957370A CN 202010801845 A CN202010801845 A CN 202010801845A CN 111957370 A CN111957370 A CN 111957370A
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L9/00—Supporting devices; Holding devices
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Abstract
The application discloses a method for picking and placing an end cover of a vessel for a clinical laboratory, which uses a device for picking and placing the end cover of the vessel for the clinical laboratory, wherein the device comprises a handheld outer cylinder, an adsorption inner cylinder, a piston assembly and a retaining lock catch; the handheld outer barrel comprises a hollow outer barrel body and a barrel wall rack arranged on the left side of the inner wall of the outer barrel body; the adsorption inner cylinder comprises an inner cylinder body, a wide-diameter sucker, an inner cylinder pressure spring, a transmission gear and a right groove; the piston assembly is slidably inserted into the adsorption inner cylinder and is in transmission connection with the transmission gear; the backstop lock catch is formed at the corresponding position of the right side of the outer barrel body and the right groove.
Description
Technical Field
The application relates to the technical field of clinical laboratory, in particular to a method for picking and placing an end cover of a vessel for the clinical laboratory.
Background
Clinical laboratories are the bridge between clinical and basic medicine, and include clinical chemistry, clinical microbiology, clinical immunology, hematology, humoral, and transfusions.
During routine operation of a clinical laboratory, it is often necessary to examine samples taken from various vessels. Common vessels include petri dishes, test tubes, stool boxes, and the like. A petri dish is a laboratory vessel for the cultivation of microorganisms or cells, consisting of a flat disc-shaped bottom and a lid, generally made of glass or plastic. The culture dish is basically made of two types, mainly plastic and glass, and the glass can be used for plant materials, microorganism culture and adherent culture of animal cells.
In the case of vessels with end caps, the need to create aseptic conditions when the end caps are removed is minimized. In addition to disinfecting hands and wearing medical gloves, the user preferably needs to pass through a device that is specifically designed to access the end cap, and which can also be disinfected, thus greatly increasing the sterility of the vessel.
The invention content is as follows:
a method for picking and placing an end cover of a vessel for a clinical laboratory is characterized by comprising the following steps:
a device for picking and placing an end cover of a vessel for a clinical laboratory is used, and comprises a handheld outer cylinder, an absorption inner cylinder, a piston assembly and a backstop lock catch;
the handheld outer barrel comprises a hollow outer barrel body and a barrel wall rack arranged on the left side of the inner wall of the outer barrel body;
the adsorption inner cylinder comprises an inner cylinder body which is slidably inserted into the outer cylinder body, a wide-diameter sucker which is formed below the outer edge of the inner cylinder body, an inner cylinder pressure spring which is wound on the outer wall of the inner cylinder body and is positioned between the lower edge of the outer cylinder body and the upper edge of the wide-diameter sucker, a transmission gear which is rotatably arranged in the left wall of the inner cylinder body and is in transmission connection with a cylinder wall rack, and a right groove which is formed on the right side of the upper half part of the inner cylinder body;
the piston assembly is slidably inserted into the adsorption inner cylinder and is in transmission connection with the transmission gear; the piston assembly includes:
the piston end comprises an end body which is arranged in the inner cylinder body in a sliding manner, a sealing ring plug which is arranged on the lower edge of the outer wall of the end body and is in sealing contact with the inner cylinder body, a piston inner cavity which is formed in the end body, a piston left hole which is formed above the left side of the piston inner cavity, a spring inserted rod which is arranged on the right half part of the piston inner cavity, and a piston compressed spring which is wound on the spring inserted rod;
the piston pull rod comprises a follow-up rack which is slidably inserted into the upper half part of the inner cylinder body and is in transmission connection with the transmission gear, a follow-up polished rod which is formed at the lower end of the follow-up rack and penetrates through a left piston hole to be inserted into an inner cavity of the piston, a screw rod insertion hole which is formed in the follow-up rack and the follow-up polished rod, a screw rod side hole which is formed in the lower half part of the right side of the screw rod insertion hole, an external screw rod which is rotatably inserted into the screw rod insertion hole, and a perforated insertion block which is formed on the right side of the lower end of the external screw rod and penetrates through the screw rod side hole, wherein the perforated insertion block is sleeved on; the piston pull rod further comprises a widened round hole formed at the upper end of the screw jack, an anti-drop ring groove formed below the outer edge of the widened round hole, an internal thread cylinder rotatably arranged in the widened round hole and in threaded connection with the external thread rod, and an anti-drop ring formed on the outer wall of the internal thread cylinder and clamped in the anti-drop ring groove;
the backstop lock catch is formed at the right side of the outer barrel body and corresponds to the right groove;
the backstop hasp includes:
the spring inserting pipe comprises an internal thread pipe which penetrates through the right wall of the outer cylinder body, a side limiting hole which is formed in the upper edge of the inner cavity of the internal thread pipe along the axial direction, an external thread rod which is in threaded connection with the right end of the internal thread pipe, and a compression spring which is arranged in the internal thread pipe;
the telescopic plug comprises a telescopic inserting rod which is slidably inserted into the internal thread pipe, a side limiting rod which is formed on the side surface of the telescopic inserting rod and is inserted into the side limiting hole, a clamping groove which is formed on the upper left side of the telescopic inserting rod, a friction inclined block which is formed on the left side of the clamping groove and faces towards the upper left side, and a driven inclined plane which is formed at the left end of the telescopic inserting rod and faces towards the lower left side;
the upper clamping plate is formed on the right side of the upper end of the right groove and clamped above the spring insertion tube;
the fixed chuck comprises a first base formed below the upper clamping plate, a fixed longitudinal rod formed below the right side of the first base, and a smooth inclined surface formed at the lower end of the fixed longitudinal rod and facing the upper right;
the follow-up chuck comprises a second base formed on the right side of the lower end of the right groove, a connecting sliding rod connected between the first base and the second base, a resistance adjusting pressure spring wound on the connecting sliding rod, a follow-up sliding block slidably sleeved on the connecting sliding rod and positioned below the resistance adjusting pressure spring, and a friction inclined plane formed on the right side of the follow-up sliding block and arranged towards the right lower side; the servo chuck further comprises an adjusting screw rod screwed in the first base, a screw rod clamping ring fixed on the left wall of the right groove and located at the left side of the fixed longitudinal rod, a circle of limiting ring groove matched with the screw rod clamping ring is formed in the outer wall of the adjusting screw rod, the servo chuck further comprises an adjusting nut screwed and matched with the adjusting screw rod, and the adjusting nut is provided with an opening and sleeved on the connecting sliding rod and located above the resistance-adjusting pressure spring;
the taking and placing method comprises the following steps:
step 1, fixing an end cover:
step 1.1, preliminarily crimping the end cover:
the handheld outer cylinder is held by hand, and the wide-diameter sucker is preliminarily pressed on an end cover of a vessel;
step 1.2, adsorbing and fixing an end cover:
pressing down the handheld outer cylinder, keeping the adsorption inner cylinder still, and enabling the handheld outer cylinder to overcome the elasticity of an inner cylinder pressure spring and move downwards relative to the adsorption inner cylinder;
the cylinder wall rack drives the transmission gear to rotate, and the transmission gear drives the follow-up rack, the follow-up polished rod, the external threaded rod and the insertion block with the hole to move upwards relative to the adsorption inner cylinder;
the plug block with the hole acts on the piston pressure spring to drive the piston end head and the sealing ring plug to move upwards in the inner cavity of the inner cylinder body until the piston end head abuts against the upper side of the right side of the inner cylinder body and is positioned below the right groove;
the air pressure of a cavity between the inner cavity of the inner cylinder body and the end cover is reduced, and the end cover is fixedly adsorbed below the wide-diameter sucker;
step 1.3, locking of the retaining lock catch:
in the step 1.2, the handheld outer cylinder drives the spring insertion tube to move downwards relative to the adsorption inner cylinder;
the driven inclined plane and the telescopic inserted rod are extruded by the smooth inclined plane to overcome the elasticity of the compression spring and retract rightwards until the leftmost side of the driven inclined plane just slides over the smooth inclined plane;
the telescopic inserted rod extends leftwards under the action of the compression spring until the side limiting rod abuts against the left end of the side limiting hole;
the handheld outer cylinder is not pressed down any more, the handheld outer cylinder is lifted up under the action of an inner cylinder pressure spring until the clamping cutting groove is blocked below the lower end face of the smooth inclined plane, the stopping lock catch locks the handheld outer cylinder and the piston assembly to prevent the handheld outer cylinder and the piston assembly from ascending and resetting, a cavity between the wide-diameter sucker and the end cover keeps a certain negative pressure, and the end cover is stably adsorbed below the wide-diameter sucker;
removing the end cap from the vessel and placing it on an operating plane with the securing device;
and 3, desorption:
step 3.1, unlocking the retaining lock:
step 3.1.1, unlocking the front section:
continuously pressing down the handheld outer cylinder to drive the spring insertion tube to continuously move downwards relative to the adsorption inner cylinder;
the upper right corner of the follow-up slider drives the driven inclined plane and the telescopic inserted rod to overcome the elasticity of the compression spring and retract rightwards until the driven inclined plane slides over the upper right corner of the follow-up slider, the friction inclined block and the telescopic inserted rod extend out under the action of the elasticity of the compression spring, and the friction inclined block is in transmission contact with the friction inclined plane;
step 3.1.2, unlocking the rear section:
the handheld outer cylinder is not pressed down, and the handheld outer cylinder and the spring insertion pipe are lifted up under the action of the pressure spring of the inner cylinder;
the friction inclined block is in friction contact with the friction inclined plane and drives the friction inclined plane to overcome the acting force of the resistance adjusting pressure spring to move upwards until the follow-up sliding block and the friction inclined plane are clamped below the smooth inclined plane;
the friction inclined block and the telescopic inserted rod continue to move upwards, and the friction inclined block is extruded by the friction inclined plane and then retracts rightwards until the friction inclined block slides through the friction inclined plane and the smooth inclined plane in sequence;
the inner cylinder pressure spring drives the handheld outer cylinder to move upwards relative to the adsorption inner cylinder until the spring insertion pipe is stopped below the upper blocking plate;
step 3.2, releasing the end cover:
step 3.2.1, controlling the adsorption force:
in the process of unlocking the front section in the step 3.1.1, the handheld outer cylinder is still in a descending state relative to the adsorption inner cylinder;
the cylinder wall rack drives the transmission gear to rotate, and the transmission gear drives the follow-up rack, the follow-up polished rod, the external threaded rod and the insertion block with the hole to move upwards relative to the adsorption inner cylinder;
the piston end is clamped above the right side of the inner cylinder body and cannot continue to move upwards, the external thread rod and the insertion block with the hole extrude the piston pressure spring upwards at the moment and cannot drive the piston end to move upwards, the air pressure of a cavity between the inner cavity of the inner cylinder body and the end cover is not continuously reduced, and the end cover is prevented from being deformed due to excessive negative pressure on the end cover;
step 3.2.3, release of adsorption force:
in the process of unlocking the rear section in the step 3.1.1, the handheld outer cylinder is in an ascending state relative to the adsorption inner cylinder;
the cylinder wall rack drives the transmission gear to rotate, and the transmission gear drives the follow-up rack, the follow-up polished rod, the external threaded rod and the insertion block with the hole to move downwards relative to the adsorption inner cylinder;
the piston end head moves downwards, the air pressure of a cavity between the inner cavity of the inner cylinder body and the end cover is increased, the end cover loses the adsorption effect, and the end cover is released.
Has the advantages that:
the device for taking and placing the end cover of the vessel for the clinical laboratory is simple in operation of taking and releasing the end cover:
when the container is taken, the wide-diameter sucker is placed on an end cover to be taken, the piston assembly can be driven to move upwards by simply pressing down the handheld outer barrel, so that negative pressure is formed between the wide-diameter sucker and the end cover, the end cover is fixed in an adsorption manner, and then the end cover is taken down from the container; meanwhile, the retaining lock catch is blocked below the upper blocking plate, the posture of the handheld outer barrel and the piston assembly is locked, and the stability of negative pressure is guaranteed.
During the release, continue to push down handheld urceolus can unblock the stopping hasp for handheld urceolus goes upward to reset, the piston assembly resets down, realize the malleation between wide footpath sucking disc and the end cover, the end cover receives the action of gravity natural release.
The device for taking and placing the end cover of the vessel for the clinical laboratory can keep negative pressure stable at the front section of unlocking of the retaining lock catch and finally avoid the deformation of the end cover:
the handheld outer cylinder is still in a descending state relative to the adsorption inner cylinder; the cylinder wall rack drives the transmission gear to rotate, and the transmission gear drives the follow-up rack, the follow-up polished rod, the external threaded rod and the insertion block with the hole to move upwards relative to the adsorption inner cylinder; however, the piston end is clamped above the right side of the inner cylinder body and cannot continue to move upwards, at the moment, the external thread rod and the insertion block with the hole upwards extrude the piston pressure spring and cannot drive the piston end to move upwards, the air pressure of a cavity between the inner cavity of the inner cylinder body and the end cover is not continuously reduced, and the end cover is prevented from being deformed due to excessive negative pressure on the end cover.
The device for taking and placing the end cover of the vessel for the clinical laboratory can also adjust the damping of a piston assembly, a follow-up chuck and a telescopic plug.
Description of the drawings:
in order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
FIG. 1 is a cross-sectional view of one embodiment of the clinical vessel end cap access device.
FIG. 2 is a cross-sectional view of another embodiment of the clinical vessel end cap access device.
FIG. 3 is a cross-sectional view of another embodiment of the clinical vessel end cap access device.
FIG. 4 is a cross-sectional view of another embodiment of the clinical vessel end cap access device.
Fig. 5 is a sectional view taken along line E-E of fig. 1.
FIG. 6 is a cross-sectional view of one embodiment of the adsorbent inner cartridge and piston assembly.
Fig. 7 is a sectional view of a portion a of fig. 1.
Fig. 8 is a sectional view of the portion B in fig. 2.
Fig. 9 is a sectional view of the portion C of fig. 3.
Fig. 10 is a cross-sectional view of the portion D in fig. 4.
Fig. 11 is a cross-sectional view of one embodiment of the telescopic plug.
In the figure:
a. a vessel, b. an end cap;
1. the outer cylinder is held by a hand, 11, an outer cylinder body, 12, a cylinder wall rack and 13, an operation through hole;
2. the suction inner cylinder 21, the inner cylinder body 22, the wide-diameter sucker 23, the inner cylinder pressure spring 24, the transmission gear 25 and the right groove are arranged;
3. a piston assembly;
31. the piston comprises a piston end, a main end body, a sealing ring plug, a piston inner cavity, a piston left hole, a spring inserted rod and a piston compressed spring, wherein the piston end is 31a, the end body is 31b, the piston inner cavity is 31c, the piston left hole is 31d, and the spring inserted rod is 31 e;
32. the structure comprises a piston pull rod, a follow-up rack, a follow-up polish rod, a screw jack, a screw side hole, an external threaded rod, a hole plug block, a widening round hole, an anti-drop ring groove, an internal threaded cylinder and an anti-drop ring, wherein the piston pull rod is 32a, the follow-up rack is 32b, the follow-up polish rod is 32c, the screw side hole is 32d, the external threaded rod is 32e, the hole plug block is 32f, the widening round hole is;
4. stopping locking;
41. a spring insertion tube, 41a an internal thread tube, 41b a side limiting hole, 41c an external thread rod, 41d a compression spring;
42. the telescopic plug comprises a telescopic plug pin 42a, a side limiting rod 42b, a clamping cutting groove 42c, a friction inclined block 42d and a driven inclined plane 42 e;
43. an upper clamping plate;
44. a fixed chuck, 44a, a first base, 44b, a fixed longitudinal rod and 44c, a smooth inclined surface;
45. the follow-up chuck, 45a, a second base, 45b, a connecting sliding rod, 45c, a resistance adjusting pressure spring, 45d, a follow-up sliding block, 45e, a friction inclined plane, 45f, an adjusting screw rod and 45g, an adjusting nut.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.
A method for picking and placing an end cover of a vessel for a clinical laboratory is characterized by comprising the following steps:
a device for picking and placing an end cover of a vessel for a clinical laboratory is used, and comprises a handheld outer cylinder 1, an absorption inner cylinder 2, a piston assembly 3 and a backstop lock catch 4;
the handheld outer barrel 1 comprises a hollow outer barrel body 11 and a barrel wall rack 12 arranged on the left side of the inner wall of the outer barrel body 11;
the adsorption inner cylinder 2 comprises an inner cylinder body 21 which is slidably inserted into the outer cylinder body 11, a wide-diameter sucker 22 which is formed below the outer edge of the inner cylinder body 21, an inner cylinder pressure spring 23 which is wound on the outer wall of the inner cylinder body 21 and is positioned between the lower edge of the outer cylinder body 11 and the upper edge of the wide-diameter sucker 22, a transmission gear 24 which is rotatably arranged in the left wall of the inner cylinder body 21 and is in transmission connection with the cylinder wall rack 12, and a right groove 25 which is formed on the right side of the upper half part of the inner cylinder body 21;
the piston assembly 3 is slidably inserted into the adsorption inner cylinder 2 and is in transmission connection with a transmission gear 24; the piston assembly 3 includes:
the piston end 31 comprises an end main body 31a which is arranged in the inner cylinder body 21 in a sliding way, a sealing ring plug 31b which is arranged at the lower edge of the outer wall of the end main body 31a and is in sealing contact with the inner cylinder body 21, a piston inner cavity 31c which is formed in the end main body 31a, a piston left hole 31d which is formed above the left side of the piston inner cavity 31c, a spring inserting rod 31e which is arranged on the right half part of the piston inner cavity 31c, and a piston pressure spring 31f which is wound on the spring inserting rod 31 e;
the piston pull rod 32 comprises a follow-up rack 32a which is slidably inserted into the upper half part of the inner cylinder body 21 and is in transmission connection with the transmission gear 24, a follow-up polished rod 32b which is formed at the lower end of the follow-up rack 32a and penetrates through a piston left hole 31d and then is inserted into a piston inner cavity 31c, a screw rod insertion hole 32c which is formed in the follow-up rack 32a and the follow-up polished rod 32b, a screw rod side hole 32d which is formed in the lower half part of the right side of the screw rod insertion hole 32c, an external screw rod 32e which is rotatably inserted into the screw rod insertion hole 32c, and a perforated insertion block 32f which is formed on the right side of the lower end of the external screw rod 32e and penetrates through the screw rod side hole 32d, wherein the perforated insertion block 32f is sleeved on the spring insertion rod; the piston pull rod 32 further comprises a widened circular hole 32g formed at the upper end of the screw jack 32c, an anti-drop ring groove 32h formed below the outer edge of the widened circular hole 32g, an internal thread cylinder 32i rotatably arranged in the widened circular hole 32g and in threaded connection with the external thread rod 32e, and an anti-drop ring 32j formed on the outer wall of the internal thread cylinder 32i and clamped in the anti-drop ring groove 32 h;
the retaining lock catch 4 is formed at the right side of the outer barrel body 11 and corresponds to the right groove 25;
the backstop lock 4 includes:
a spring insertion tube 41 including a female screw tube 41a penetrating the right wall of the outer cylinder body 11, a side stopper hole 41b formed in the axial direction at the upper edge of the inner cavity of the female screw tube 41a, a male screw rod 41c screwed to the right end of the female screw tube 41a, and a compression spring 41d provided in the female screw tube 41 a;
a telescopic plug 42 including a telescopic insertion rod 42a slidably inserted into the female screw tube 41a, a side stopper 42b formed on a side surface of the telescopic insertion rod 42a and inserted into the side stopper hole 41b, a locking groove 42c formed on an upper left side of the telescopic insertion rod 42a, a friction slant 42d formed on a left side of the locking groove 42c and facing upward left, and a driven slant 42e formed on a left end of the telescopic insertion rod 42a and facing downward left;
the upper clamping plate 43 is formed on the right side of the upper end of the right groove 25, and the upper clamping plate 43 is clamped above the spring insertion tube 41;
a fixed chuck 44 including a first base 44a formed below the upper chuck plate 43, a fixed vertical bar 44b formed below the right side of the first base 44a, and a smooth inclined surface 44c formed at the lower end of the fixed vertical bar 44b and facing upward right;
the follow-up chuck 45 comprises a second base 45a formed on the right side of the lower end of the right groove 25, a connecting sliding rod 45b connected between the first base 44a and the second base 45a, a resistance adjusting pressure spring 45c wound on the connecting sliding rod 45b, a follow-up slider 45d slidably sleeved on the connecting sliding rod 45b and positioned below the resistance adjusting pressure spring 45c, and a friction inclined surface 45e formed on the right side of the follow-up slider 45d and arranged towards the lower right; the follow-up chuck 45 further comprises an adjusting screw rod 45f screwed in the first base 44a, a screw rod clamping ring 45g fixed on the left wall of the right groove 25 and positioned at the left side of the fixed longitudinal rod 44b, a circle of limiting ring groove matched with the screw rod clamping ring 45g is formed in the outer wall of the adjusting screw rod 45f, the follow-up chuck 45 further comprises an adjusting nut 45h screwed and matched with the adjusting screw rod 45f, and the adjusting nut 45h is provided with an opening and is sleeved at a position, above the resistance-adjusting pressure spring 45c, on the connecting sliding rod 45 b;
the taking and placing method comprises the following steps:
step 1, fixing an end cover b:
step 1.1, preliminarily crimping the end cover b:
the handheld outer cylinder 1 is held by hand, and the wide-diameter sucker 22 is preliminarily pressed on an end cover b of a vessel a;
step 1.2, adsorbing and fixing an end cover b:
pressing down the handheld outer cylinder 1, keeping the adsorption inner cylinder 2 still, and enabling the handheld outer cylinder 1 to overcome the elasticity of the inner cylinder pressure spring 23 and move downwards relative to the adsorption inner cylinder 2;
the cylinder wall rack 12 drives the transmission gear 24 to rotate, and the transmission gear 24 drives the follow-up rack 32a, the follow-up polished rod 32b, the external threaded rod 32e and the insertion block with holes 32f to move upwards relative to the adsorption inner cylinder 2;
the plug block 32f with the hole acts on the piston compression spring 31f to drive the piston end 31 and the sealing ring plug 31b to move upwards in the inner cavity of the inner cylinder body 21 until the piston end 31 abuts against the upper part of the right side of the inner cylinder body 21 and is positioned below the right groove 25;
the air pressure of a cavity between the inner cavity of the inner cylinder body 21 and the end cover b is reduced, and the end cover b is fixedly adsorbed below the wide-diameter sucker 22;
step 1.3, locking the retaining lock catch 4:
in the step 1.2, the handheld outer cylinder 1 drives the spring insertion tube 41 to move downwards relative to the adsorption inner cylinder 2;
the driven inclined surface 42e and the telescopic insertion rod 42a are pressed by the smooth inclined surface 44c to further overcome the elastic force of the compression spring 41d to retract rightwards until the leftmost side of the driven inclined surface 42e just slides over the smooth inclined surface 44 c;
the telescopic inserted rod 42a extends leftwards under the action of the compression spring 41d until the side limit rod 42b abuts against the left end of the side limit hole 41 b;
the handheld outer cylinder 1 is not pressed down any more, the handheld outer cylinder 1 is lifted up under the action of an inner cylinder pressure spring 23 until the clamping cutting groove 42c is clamped below the lower end face of the smooth inclined plane 44c, the stopping lock catch 4 locks the handheld outer cylinder 1 and the piston assembly 3 so that the handheld outer cylinder cannot go upwards to reset, a certain negative pressure is kept in a cavity between the wide-diameter sucker 22 and the end cover b, and the end cover b is stably adsorbed below the wide-diameter sucker 22;
removing the end cap b from the vessel a by the fixing device and placing the end cap b on an operation plane;
and 3, desorption:
step 3.1, unlocking the backstop lock catch 4:
step 3.1.1, unlocking the front section:
continuously pressing down the handheld outer cylinder 1 to drive the spring insertion tube 41 to continuously move downwards relative to the adsorption inner cylinder 2;
the upper right corner of the follow-up sliding block 45d drives the driven inclined plane 42e and the telescopic inserted rod 42a to retract rightwards by overcoming the elastic force of the compression spring 41d until the driven inclined plane 42e slides through the upper right corner of the follow-up sliding block 45d, the friction inclined block 42d and the telescopic inserted rod 42a extend out under the elastic force of the compression spring 41d, and the friction inclined block 42d is in transmission contact with the friction inclined plane 45 e;
step 3.1.2, unlocking the rear section:
the handheld outer cylinder 1 is not pressed down, and the handheld outer cylinder 1 and the spring insertion tube 41 are lifted up under the action of the inner cylinder compression spring 23;
the inclined friction block 42d is in friction contact with the inclined friction surface 45e and drives the inclined friction surface to overcome the acting force of the resistance-adjusting pressure spring 45c to move upwards until the follow-up sliding block 45d and the inclined friction surface 45e are clamped below the smooth inclined surface 44 c;
the inclined friction block 42d and the telescopic inserted rod 42a continue to move upwards, and the inclined friction block 42d is extruded by the inclined friction surface 45e and then retracts rightwards until the inclined friction block 42d slides over the inclined friction surface 45e and the smooth inclined surface 44c in sequence;
the inner cylinder pressure spring 23 drives the handheld outer cylinder 1 to continuously move upwards relative to the adsorption inner cylinder 2 until the spring insertion tube 41 is stopped below the upper blocking plate 43;
step 3.2, releasing the end cover b:
step 3.2.1, controlling the adsorption force:
in the process of unlocking the front section in the step 3.1.1, the handheld outer cylinder 1 is still in a descending state relative to the adsorption inner cylinder 2;
the cylinder wall rack 12 drives the transmission gear 24 to rotate, and the transmission gear 24 drives the follow-up rack 32a, the follow-up polished rod 32b, the external threaded rod 32e and the insertion block with holes 32f to move upwards relative to the adsorption inner cylinder 2;
however, the piston end 31 is clamped above the right side of the inner cylinder body 21 and cannot move upwards continuously, at the moment, the external thread rod 32e and the insertion block 32f with holes extrude the piston compression spring 31f upwards without driving the piston end 31 to move upwards, the air pressure of a cavity between the inner cavity of the inner cylinder body 21 and the end cover b is not reduced continuously, and the deformation of the end cover b caused by excessive negative pressure on the end cover b is avoided;
step 3.2.3, release of adsorption force:
in the process of unlocking the rear section in the step 3.1.1, the handheld outer cylinder 1 is in an ascending state relative to the adsorption inner cylinder 2;
the cylinder wall rack 12 drives the transmission gear 24 to rotate, and the transmission gear 24 drives the follow-up rack 32a, the follow-up polished rod 32b, the external threaded rod 32e and the insertion block with holes 32f to move downwards relative to the adsorption inner cylinder 2;
the piston end 31 moves downwards, the air pressure of the cavity between the inner cavity of the inner cylinder body 21 and the end cover b is increased, the end cover b loses the adsorption effect, and the end cover b is released.
Further, the cross section of the outer cylinder body 11 is non-circular.
Further, the cross section of the outer cylinder body 11 is a round rectangle.
Further, a sealing ring made of soft material is formed at the lower edge of the wide-diameter suction cup 22.
Further, an operation through hole 13 is formed in the left side of the upper end face of the outer cylinder body 11.
The pre-adjusting method of the pick-and-place device comprises the following steps:
step 1, damping adjustment of the piston assembly 3 and the follow-up chuck 45:
step 1.1, posture adjustment before adjustment:
pressing down the handheld outer cylinder 1 to enable the handheld outer cylinder to move downwards relative to the adsorption inner cylinder 2;
the piston end 31 and the piston pull rod 32 move upwards relative to the adsorption inner cylinder 2, after the piston end 31 is clamped above the right side of the inner cylinder body 21, the piston end 31 continues to compress the piston compression spring 31f for damping and moves upwards until the internal thread cylinder 32i and the adjusting screw 45f pass through the operation through hole 13 and then are exposed above the outer cylinder body 11;
step 1.2, damping adjustment of the piston assembly 3:
the internal thread cylinder 32i and the anti-drop ring 32j are rotated to drive the external thread rod 32e and the insertion block with holes 32f to move longitudinally;
the displacement of the insertion block 32f with the hole adjusts the compression degree and the elasticity of the piston pressure spring 31f under the state;
after the handheld outer cylinder 1 is released to move upwards to a normal position relative to the adsorption inner cylinder 2, the compression degree and the elasticity of the piston pressure spring 31f are also adjusted, and the damping of the piston assembly 3 is adjusted;
step 1.3, damping adjustment of the follow-up chuck 45:
the adjusting screw 45f is rotated to adjust the position of the adjusting nut 45h, so that the compression amount and the elasticity of the resistance adjusting pressure spring 45c in a normal state are adjusted, namely the damping of the follow-up chuck 45 is adjusted;
rotating the external screw rod 41c to adjust the compression amount and the elastic force of the compression spring 41d in a normal state;
thereby adjusting the damping of the telescoping plug 42 in the normal state.
Under normal conditions, the elasticity of the inner cylinder pressure spring 23 is at least five times of that of the resistance adjusting pressure spring 45 c; in the unlocking later stage of step 3.1.2, after the friction inclined block 42d is in friction contact with the friction inclined surface 45e, enough force can be provided to enable the friction inclined block to overcome the acting force of the resistance-adjusting pressure spring 45c to move upwards.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (5)
1. A method for picking and placing an end cover of a vessel for a clinical laboratory is characterized by comprising the following steps:
a device for picking and placing an end cover of a vessel for a clinical laboratory is used, and comprises a handheld outer cylinder (1), an adsorption inner cylinder (2), a piston assembly (3) and a backstop lock catch (4);
the handheld outer barrel (1) comprises a hollow outer barrel body (11) and a barrel wall rack (12) arranged on the left side of the inner wall of the outer barrel body (11);
the adsorption inner cylinder (2) comprises an inner cylinder body (21) which is slidably inserted into the outer cylinder body (11), a wide-diameter sucker (22) which is formed below the outer edge of the inner cylinder body (21), an inner cylinder pressure spring (23) which is wound on the outer wall of the inner cylinder body (21) and is positioned between the lower edge of the outer cylinder body (11) and the upper edge of the wide-diameter sucker (22), a transmission gear (24) which is rotatably arranged in the left wall of the inner cylinder body (21) and is in transmission connection with a cylinder wall rack (12), and a right groove (25) which is formed on the right side of the upper half part of the inner cylinder body (21);
the piston assembly (3) is slidably inserted into the adsorption inner cylinder (2) and is in transmission connection with the transmission gear (24); the piston assembly (3) comprises:
the piston end head (31) comprises an end head main body (31a) which is arranged in the inner cylinder body (21) in a sliding way, a sealing ring plug (31b) which is arranged at the lower edge of the outer wall of the end head main body (31a) and is in sealing contact with the inner cylinder main body (21), a piston inner cavity (31c) which is formed in the end head main body (31a), a piston left hole (31d) which is formed above the left side of the piston inner cavity (31c), a spring inserted rod (31e) which is arranged on the right half part of the piston inner cavity (31c), and a piston pressure spring (31f) which is wound on the spring inserted rod (31 e);
the piston pull rod (32) comprises a follow-up rack (32a) which is slidably inserted into the upper half part of the inner cylinder body (21) and is in transmission connection with the transmission gear (24), a follow-up polished rod (32b) which is formed at the lower end of the follow-up rack (32a) and penetrates through a piston left hole (31d) and then is inserted into a piston inner cavity (31c), a screw rod insertion hole (32c) which is formed in the follow-up rack (32a) and the follow-up polished rod (32b), a screw rod side hole (32d) which is formed at the lower half part of the right side of the screw rod insertion hole (32c), an external screw rod (32e) which is rotatably inserted into the screw rod insertion hole (32c), and a perforated insertion block (32f) which is formed at the right side of the lower end of the external screw rod (32e) and penetrates, the plug block (32f) with the hole is sleeved on the spring plug rod (31e) and is abutted against the lower part of the piston compression spring (31 f); the piston pull rod (32) further comprises a widened round hole (32g) formed at the upper end of the screw jack (32c), an anti-drop ring groove (32h) formed below the outer edge of the widened round hole (32g), an internal thread cylinder (32i) rotatably arranged in the widened round hole (32g) and in threaded connection with the external thread rod (32e), and an anti-drop ring (32j) formed on the outer wall of the internal thread cylinder (32i) and clamped in the anti-drop ring groove (32 h);
the backstop lock catch (4) is formed at the right side of the outer barrel body (11) and corresponds to the right groove (25);
the backstop lock catch (4) comprises:
a spring insertion tube (41) including an internally threaded tube (41a) provided through a right wall of the outer cylinder body (11), a side stopper hole (41b) formed in an upper edge of an inner cavity of the internally threaded tube (41a) in an axial direction, an externally threaded rod (41c) screwed to a right end of the internally threaded tube (41a), and a compression spring (41d) provided in the internally threaded tube (41 a);
a telescopic plug (42) which comprises a telescopic inserting rod (42a) which is slidably inserted into the internal thread pipe (41a), a side limiting rod (42b) which is formed on the side surface of the telescopic inserting rod (42a) and is inserted into the side limiting hole (41b), a clamping and stopping cutting groove (42c) which is formed on the upper left side of the telescopic inserting rod (42a), a friction inclined block (42d) which is formed on the left side of the clamping and stopping cutting groove (42c) and faces towards the upper left, and a driven inclined surface (42e) which is formed on the left end of the telescopic inserting rod (42a) and faces towards the lower left;
the upper clamping and stopping plate (43) is formed on the right side of the upper end of the right groove (25), and the upper clamping and stopping plate (43) is stopped above the spring insertion tube (41);
the fixed clamping head (44) comprises a first base (44a) formed below the upper clamping plate (43), a fixed longitudinal rod (44b) formed below the right side of the first base (44a), and a smooth inclined surface (44c) formed at the lower end of the fixed longitudinal rod (44b) and facing the upper right;
the follow-up chuck (45) comprises a second base (45a) formed on the right side of the lower end of the right groove (25), a connecting sliding rod (45b) connected between the first base (44a) and the second base (45a), a resistance adjusting pressure spring (45c) wound on the connecting sliding rod (45b), a follow-up sliding block (45d) slidably sleeved on the connecting sliding rod (45b) and positioned below the resistance adjusting pressure spring (45c), and a friction inclined plane (45e) formed on the right side of the follow-up sliding block (45d) and arranged towards the lower right; the follow-up chuck (45) further comprises an adjusting screw rod (45f) screwed in the first base (44a), a screw rod clamping ring (45g) fixed to the left wall of the right groove (25) and located at the left side of the fixed longitudinal rod (44b), a circle of limiting ring groove matched with the screw rod clamping ring (45g) is formed in the outer wall of the adjusting screw rod (45f), the follow-up chuck (45) further comprises an adjusting nut (45h) in threaded connection with the adjusting screw rod (45f), and the adjusting nut (45h) is provided with an opening and is sleeved at a position, located above the resistance adjusting pressure spring (45c), on the connecting sliding rod (45 b);
the taking and placing method comprises the following steps:
step 1, fixing the end cap (b):
step 1.1, preliminarily crimping the end cover (b):
the handheld outer cylinder (1) is held by hand, and the wide-diameter sucker (22) is preliminarily pressed on an end cover (b) of a vessel (a);
step 1.2, adsorbing and fixing the end cover (b):
the handheld outer cylinder (1) is pressed downwards, the adsorption inner cylinder (2) is static, and the handheld outer cylinder (1) overcomes the elasticity of an inner cylinder pressure spring (23) and moves downwards relative to the adsorption inner cylinder (2);
the cylinder wall rack (12) drives the transmission gear (24) to rotate, and the transmission gear (24) drives the follow-up rack (32a), the follow-up polish rod (32b), the external threaded rod (32e) and the insertion block with the hole (32f) to move upwards relative to the adsorption inner cylinder (2);
the plug block (32f) with the hole acts on the piston pressure spring (31f) to drive the piston end head (31) and the sealing ring plug (31b) to move upwards in the inner cavity of the inner cylinder body (21) until the piston end head (31) abuts against the upper part of the right side of the inner cylinder body (21) and is positioned below the right groove (25);
the air pressure of a cavity between the inner cavity of the inner cylinder body (21) and the end cover (b) is reduced, and the end cover (b) is fixedly adsorbed below the wide-diameter sucker (22);
step 1.3, locking the retaining lock catch (4):
when the step 1.2 is carried out, the handheld outer cylinder (1) drives the spring insertion tube (41) to move downwards relative to the adsorption inner cylinder (2);
the driven inclined plane (42e) and the telescopic inserted rod (42a) are pressed by the smooth inclined plane (44c) to further overcome the elastic force of a compression spring (41d) to retract rightwards until the leftmost side of the driven inclined plane (42e) just slides over the smooth inclined plane (44 c);
the telescopic inserted rod (42a) extends leftwards under the action of the compression spring (41d) until the side limit rod (42b) abuts against the left end of the side limit hole (41 b);
the handheld outer cylinder (1) is not pressed down any more, the handheld outer cylinder (1) is lifted up under the action of an inner cylinder pressure spring (23) until the clamping groove (42c) is clamped below the lower end face of the smooth inclined plane (44c), the stopping lock catch (4) locks the handheld outer cylinder (1) and the piston assembly (3) to enable the handheld outer cylinder and the piston assembly not to move upwards and reset, a certain negative pressure is kept in a cavity between the wide-diameter sucker (22) and the end cover (b), and the end cover (b) is stably adsorbed below the wide-diameter sucker (22);
step 2, removing the end cover (b):
removing the end cap (b) from the vessel (a) and placing it on the operating plane with said fixing means;
and 3, desorption:
step 3.1, unlocking the backstop lock catch (4):
step 3.1.1, unlocking the front section:
continuously pressing down the handheld outer cylinder (1) to drive the spring insertion tube (41) to continuously move downwards relative to the adsorption inner cylinder (2);
the upper right corner of the follow-up sliding block (45d) drives the driven inclined plane (42e) and the telescopic inserted rod (42a) to retract rightwards by overcoming the elastic force of the compression spring (41d) until the driven inclined plane (42e) slides through the upper right corner of the follow-up sliding block (45d), the friction inclined block (42d) and the telescopic inserted rod (42a) extend out under the elastic force action of the compression spring (41d), and the friction inclined block (42d) is in transmission contact with the friction inclined plane (45 e);
step 3.1.2, unlocking the rear section:
the handheld outer cylinder (1) is not pressed down, and the handheld outer cylinder (1) and the spring insertion pipe (41) are lifted up under the action of the inner cylinder compression spring (23);
the friction inclined block (42d) is in friction contact with the friction inclined plane (45e) and drives the friction inclined plane to overcome the acting force of the resistance-adjusting pressure spring (45c) to move upwards until the follow-up sliding block (45d) and the friction inclined plane (45e) are clamped below the smooth inclined plane (44 c);
the friction inclined block (42d) and the telescopic inserted rod (42a) continue to move upwards, and the friction inclined block (42d) is extruded by the friction inclined plane (45e) and then retracts rightwards until the friction inclined block (42d) slides through the friction inclined plane (45e) and the smooth inclined plane (44c) in sequence;
the inner cylinder pressure spring (23) drives the handheld outer cylinder (1) to continuously move upwards relative to the adsorption inner cylinder (2) until the spring insertion tube (41) is stopped below the upper blocking plate (43);
step 3.2, release of end cap (b):
step 3.2.1, controlling the adsorption force:
in the process of unlocking the front section in the step 3.1.1, the handheld outer cylinder (1) is still in a descending state relative to the adsorption inner cylinder (2);
the cylinder wall rack (12) drives the transmission gear (24) to rotate, and the transmission gear (24) drives the follow-up rack (32a), the follow-up polish rod (32b), the external threaded rod (32e) and the insertion block with the hole (32f) to move upwards relative to the adsorption inner cylinder (2);
but the piston end head (31) is clamped above the right side of the inner cylinder body (21) and cannot move upwards continuously, at the moment, the external thread rod (32e) and the insertion block (32f) with the hole extrude the piston pressure spring (31f) upwards without driving the piston end head (31) to move upwards, the air pressure of a cavity between the inner cavity of the inner cylinder body (21) and the end cover (b) is not reduced continuously, and the end cover (b) is prevented from being deformed due to excessive negative pressure caused by the end cover (b);
step 3.2.3, release of adsorption force:
in the process of unlocking the rear section in the step 3.1.1, the handheld outer cylinder (1) is in an ascending state relative to the adsorption inner cylinder (2);
the cylinder wall rack (12) drives the transmission gear (24) to rotate, and the transmission gear (24) drives the follow-up rack (32a), the follow-up polish rod (32b), the external threaded rod (32e) and the insertion block with the hole (32f) to move downwards relative to the adsorption inner cylinder (2);
the piston end (31) goes down, the air pressure of the chamber between the inner cavity of the inner cylinder body (21) and the end cover (b) is increased, the end cover (b) loses the adsorption effect, and the end cover (b) is released.
2. The apparatus of claim 1, wherein the apparatus comprises: the cross section of the outer cylinder body (11) is non-circular.
3. A clinical laboratory vessel end cap picking and placing device according to claim 2, wherein: the cross section of the outer barrel body (11) is in a round corner rectangular shape.
4. A clinical laboratory vessel end cap picking and placing device according to claim 3, wherein: and a sealing ring made of soft materials is formed on the lower edge of the wide-diameter sucker (22).
5. A clinical laboratory vessel end cap picking and placing device according to claim 4, wherein: an operation through hole (13) is formed in the left side of the upper end face of the outer barrel body (11).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010801845.6A CN111957370A (en) | 2020-08-11 | 2020-08-11 | Method for picking and placing end cover of vessel for clinical laboratory |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010801845.6A CN111957370A (en) | 2020-08-11 | 2020-08-11 | Method for picking and placing end cover of vessel for clinical laboratory |
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Application publication date: 20201120 |