CN110579348B - Puncture device, device and method for puncture chip falling test - Google Patents
Puncture device, device and method for puncture chip falling test Download PDFInfo
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- CN110579348B CN110579348B CN201910835160.0A CN201910835160A CN110579348B CN 110579348 B CN110579348 B CN 110579348B CN 201910835160 A CN201910835160 A CN 201910835160A CN 110579348 B CN110579348 B CN 110579348B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention relates to the technical field of quality inspection equipment of polypropylene combined covers for infusion containers, in particular to a puncture and chip falling test puncture outfit. The invention also provides a puncture chip test device, which comprises the puncture outfit, a main bracket, a cylindrical cam, a puncture outfit bracket, an injector and a water tank; the cylindrical cam is provided with a curve groove; the puncture outfit bracket is provided with a first roller; the injector comprises an injector cylinder, a piston and a piston support, wherein a second roller is arranged on the piston support, and a connecting line of the first roller and the second roller passes through the axis of the cylindrical cam. The invention can improve the test precision and simplify the test steps.
Description
Technical Field
The invention relates to the technical field of quality inspection equipment of polypropylene combined covers for infusion containers, in particular to a puncture device, a puncture device and a puncture method for puncture chip test.
Background
After the puncture needle is inserted into the infusion container, the polypropylene combined cover for the infusion container can seal the infusion container and prevent the puncture needle from falling off. The puncture falling scraps refer to particles which cause the combined cover to fall off when the puncture needle is inserted into the combined cover, and the puncture falling scraps can enter a human body along with liquid medicine to cause transfusion reaction, vascular embolism, phlebitis, anaphylactic reaction and the like, so that the puncture falling scraps are important indexes for detecting the quality of the combined cover.
The current combined cover puncture chip test steps are as follows: a combination cap sample was taken and fitted to a mating container filled with approximately half the volume of water. The combined cover is pierced by the puncture outfit, and then the container is swashed to flush down the falling scraps attached to the puncture outfit. And taking down the combined cover, and filtering all water in the container through quick filter paper to ensure that no falling scraps remain in the container. Under natural light, the number of scraps (diameter equal to or equal to 50 μm) on the rapid filter paper is observed by naked eyes (the distance between the eye and the filter paper is kept to be about 25 cm), and the number of scraps of the plastic and metal puncture outfit is not more than 20. The disadvantages of the current test are: (1) When the container is rocked, falling scraps which have fallen into water are possibly attached to the puncture outfit or the combined cover and finally run off along with the removal of the combined cover, so that the test precision is affected; (2) The current step of inserting the puncture outfit is completed manually, and the insertion depth of the puncture outfit cannot be kept consistent in the face of a large number of samples, so that the test precision is affected.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provide a puncture device for a puncture chip falling test, wherein a water injection channel is arranged in a needle body, and a water outlet is arranged on the outer circular surface of the needle body and/or the conical surface of the needle head, so that water can be injected into the puncture channel to wash down the chip falling attached to the puncture device; the invention also provides a puncture chip test device, through which puncture of the puncture outfit, injection of the injector, pumping of the injector and extraction of the puncture outfit can be completed in sequence, and the puncture chip test device is simple and convenient to operate and high in accuracy.
The technical problems to be solved by the invention are realized by adopting the following technical scheme: the puncture device for the puncture chip test comprises a needle body, wherein a needle head is arranged at one end of the needle body, a water injection channel is arranged in the needle body, a water outlet is formed in the outer circular surface of the needle body and/or the conical surface of the needle head, and the water outlet is communicated with the water injection channel. During the test, the needle body passes through the combined cover, then the needle body is connected with the water injection device, water is injected into the water injection channel through the water injection device, and water flows out through the water outlet arranged on the outer circular surface of the needle body and/or the conical surface of the needle head and flows down along the needle body, so that fallen scraps attached to the needle body are flushed into the container.
The technical scheme of the invention is as follows: the water outlets are arranged on the conical surface of the needle head and are uniformly distributed at intervals along the circumferential direction of the needle head. By adopting the technical scheme, the water injected into the water injection channel flows out along a plurality of evenly distributed water outlets, the coverage area of the water flow is large, and the flushing effect on fallen scraps is good.
The technical scheme of the invention is as follows: the diameter of the water outlet is 0.5 mm. If the diameter of the water outlet is too large, the perimeter of the incision formed on the needle body is larger, so that extra puncture scraps are easily caused, and the test precision is influenced.
The technical scheme of the invention is as follows: the quick-connection cannula is in threaded connection with the needle body and is communicated with the water injection channel. By adopting the technical scheme, the needle body and the water injection device can be conveniently and quickly connected through the hose.
The invention also provides a puncture chip test device, which comprises the puncture outfit, a main bracket, a cylindrical cam, a puncture outfit bracket, an injector and a water tank; the cylindrical cam is arranged on the main support, the axis of the cylindrical cam is in the vertical direction, the cylindrical cam is provided with a curve groove, the curve groove comprises a horizontal part, an ascending part and a descending part, the central angle of the horizontal part is 180 degrees, and the central angles of the ascending part and the descending part are 90 degrees; the puncture outfit bracket is vertically and slidably arranged on the main bracket, a first roller matched with the curve groove is arranged on the puncture outfit bracket, and the puncture outfit is fixedly arranged on the puncture outfit bracket; the injector comprises an injector cylinder, a piston and a piston support, wherein the injector cylinder is fixedly arranged on the main support, the injector cylinder is connected with a water tank through a water pumping pipe, a first one-way valve which is unidirectionally conducted from the water tank to the injector cylinder is arranged in the water pumping pipe, the injector cylinder is connected with a puncture outfit through a water injection pipe, and a second one-way valve which is unidirectionally conducted from the injector cylinder to the puncture outfit is arranged in the water injection pipe; the piston is vertically and slidably arranged in the injector cylinder, the piston support is fixedly connected with the piston, a second roller matched with the curve groove is arranged on the piston support, and a connecting line of the first roller and the second roller penetrates through the axis of the cylindrical cam.
The technical scheme of the invention is as follows: the puncture outfit also comprises a container clamp which is arranged on the main bracket and positioned below the puncture outfit. By adopting the technical scheme, the container clamp is used for fixing the container, can release both hands of a tester, and can also ensure the accuracy of the puncture position.
The technical scheme of the invention is as follows: the container clamp comprises a fixed clamping block, a sliding clamping block and a locking bolt, wherein the fixed clamping block is fixedly arranged on one side of the main support, and the sliding clamping block can be horizontally and slidably arranged on the other side of the main support; the locking bolt is in threaded connection with the main support and can push the sliding clamping block to slide inwards. By adopting the technical scheme, the fixed clamping blocks are used for positioning the container, the locking bolts are screwed, and the container can be clamped by the sliding clamping blocks.
The technical scheme of the invention is as follows: the damping mechanism comprises a damping shaft, a damping pin and a damping spring, wherein the damping shaft is coaxially and fixedly connected with the cylindrical cam, the damping pin can be horizontally and slidably arranged on the main support, the end part of the damping pin is provided with a spherical surface or a conical surface, the damping spring is arranged between the damping pin and the main support and generates acting force towards the damping shaft on the damping pin, and the damping shaft is provided with a pin hole matched with the damping pin; the first roller is located at the highest point of the curved groove when the damping pin is inserted into the pin bore. By adopting the technical scheme, a certain torque is required to enable the damping pin to overcome the elasticity and separate from the pin hole, so that the damping mechanism can prevent the cylindrical cam from over rotating.
The technical scheme of the invention is as follows: the rotary knob is coaxially and fixedly connected with the cylindrical cam.
The invention also provides a method for performing puncture chip test by using the puncture chip test device, which comprises the following steps:
A. taking a combined cover sample and assembling the combined cover sample on a matched container, wherein water is filled in the container;
B. the initial position, the first roller is positioned at the highest point of the curve groove, the second roller is positioned at the midpoint of the horizontal part, and the cylindrical cam is positioned at the 0-degree position at the moment;
C. Placing the container under the puncture outfit and rotating the cylindrical cam;
D. In the process that the cylindrical cam rotates from 0 degree to 90 degrees, the descending part descends the first roller to the lowest point, so that the puncture outfit punctures the combined cover, and the horizontal part does not generate vertical acting force on the second roller, so that the piston does not act;
E. In the process that the cylindrical cam rotates from 90 degrees to 180 degrees, the horizontal part does not generate vertical acting force on the first roller, so that the puncture outfit does not act, the lifting part enables the second roller to rise to the highest point, the piston is lifted, water in the injector is injected into the water injection channel through the water injection pipe under the positive pressure effect in the injector cylinder, the water flows out through the water outlet arranged on the outer circular surface of the needle body and/or the conical surface of the needle head, flows down along the needle body, and flushes falling scraps attached to the needle body into the container;
F. In the process that the cylindrical cam rotates from 180 degrees to 270 degrees, the horizontal part does not generate vertical acting force on the first roller, so that the puncture outfit does not act, the descending part descends the second roller to the lowest point, the piston descends, and under the negative pressure in the syringe barrel, water in the water tank enters the syringe barrel through the water suction pipe;
G. In the process that the cylindrical cam rotates from 270 degrees to 360 degrees (0 degrees), the rising part makes the first roller rise to the highest point, the puncture outfit is pulled out of the combined cover, and the horizontal part does not generate vertical acting force on the second roller, so that the piston does not act;
H. and taking down the combined cover, filtering the water in the container through the quick filter paper, ensuring that no falling scraps remain in the container, and observing the number of falling scraps on the quick filter paper by naked eyes under natural light.
Compared with the prior art, the puncture device, the device and the method for the puncture chip falling test have the beneficial effects that:
(1) The water injection channel is arranged in the needle body of the puncture outfit, and the water outlet is arranged on the outer circular surface of the needle body and/or the conical surface of the needle head, so that after the puncture outfit punctures the combined cover, water can be injected into the water injection channel through the water injection device, water flows out through the water outlet arranged on the outer circular surface of the needle body and/or the conical surface of the needle head and flows down along the needle body, and fallen scraps attached to the needle body are flushed into the container;
(2) The puncture chip falling test device can ensure the constant insertion depth and water injection quantity of the puncture outfit, prevent errors caused by manual operation and improve test precision;
(3) According to the puncture chip test device, the puncture device can be inserted, injected with the injector, pumped with the injector and pulled out by rotating the cylindrical cam for one circle, so that the operation is simple and convenient, and the test failure caused by disordered or missing operation steps is prevented;
(4) When the puncture outfit is inserted and pulled out, the injector does not act, so that water is prevented from being injected outside the container to influence the field environment; in the same way, when the injector is filled with water and the injector is pumped, the puncture outfit does not act, so that new fallen scraps are prevented from being washed down due to the water injection when the puncture outfit punctures, or the fallen scraps on the puncture outfit are pulled out when the fallen scraps are not washed down, and the test precision is improved;
(5) According to the puncture chip testing device, the puncture outfit and the injector are integrated, and the puncture outfit and the water injection device are not required to be connected after the puncture outfit pierces the combiner, so that testing steps are saved, and testing efficiency is improved;
(6) Compared with electrical equipment, the device has simple structure and low cost.
Drawings
Fig. 1 is a perspective view of a puncture outfit for a puncture and chip test according to the first embodiment.
Fig. 2 is a full cross-sectional view of the needle body in the first embodiment.
Fig. 3 is a perspective view of the puncture chip test device in the first embodiment (the cylindrical cam is in the 0 ° position).
Fig. 4 is a front view of the puncture chip test device in the first embodiment (the cylindrical cam is in the 0 ° position).
Fig. 5 is a cross-sectional view taken along the direction A-A in fig. 4.
Fig. 6 is a partial enlarged view of the portion B in fig. 5.
Fig. 7 is a cross-sectional view taken along the direction C-C in fig. 4.
Fig. 8 is a side cross-sectional view of the puncture chip test device of the first embodiment (the cylindrical cam is in the 180 position).
Fig. 9 is a perspective cross-sectional view of the puncture chip test device in the first embodiment (the cylindrical cam is in the 180 ° position).
Fig. 10 is a partial enlarged view of a portion D in fig. 9.
Fig. 11 is a perspective view of a cylindrical cam in the first embodiment.
Fig. 12 is a positional state diagram of the first roller, the second roller, and the cylindrical cam (the cylindrical cam is at the 0 ° position) in the first embodiment.
Fig. 13 is a positional state diagram of the first roller, the second roller, and the cylindrical cam (the cylindrical cam is at the 90 ° position) in the first embodiment.
Fig. 14 is a positional state diagram of the first roller, the second roller, and the cylindrical cam (the cylindrical cam is at a 180 ° position) in the first embodiment.
Fig. 15 is a positional state diagram of the first roller, the second roller, and the cylindrical cam (the cylindrical cam is at the 270 ° position) in the first embodiment.
Fig. 16 is a full sectional view of the needle body in the second embodiment.
Fig. 17 is a sectional view taken along the direction E-E in fig. 16.
Fig. 18 is a full sectional view of the needle body in the third embodiment.
In the figure: 1. the syringe comprises a syringe body, 2, a syringe needle, 3, a water injection channel, 4, a water outlet, 5, a quick cannula joint, 6, a main support, 7, a cylindrical cam, 8, a puncture outfit support, 9, a water tank, 10, a horizontal part, 11, an ascending part, 12, a descending part, 13, a first roller, 14, a syringe barrel, 15, a piston, 16, a piston support, 17, a water suction pipe, 18, a first one-way valve, 19, a water injection pipe, 20, a second one-way valve, 21, a second roller, 22, a fixed clamping block, 23, a sliding clamping block, 24, a locking bolt, 25, a damping shaft, 26, a damping pin, 27, a damping spring, 28, a knob, 29, a combined cover, 30, a container, 31 and a sealing ring.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the following description of the specific embodiments of the present invention will be given with reference to the accompanying drawings.
Example 1
As shown in fig. 1 to 15, the puncture chip test device comprises a main bracket 6, a cylindrical cam 7, a puncture outfit bracket 8, an injector, a water tank 9, a clamp and a damping mechanism.
As shown in fig. 1 and 2, the puncture outfit comprises a needle body 1 and a quick insertion tube joint 5, one end of the needle body 1 is provided with a conical needle head 2, a water injection channel 3 is arranged in the needle body 1, the water injection channel 3 is processed by electric spark, a water outlet 4 is arranged on the conical surface of the needle head 2, and the water outlet 4 is communicated with the water injection channel 3. The quick cannula joint 5 is in threaded connection with the needle body 1 and is communicated with the water injection channel 3, and is used for being quickly connected with a pipeline.
If the diameter of the water outlet 4 is too large, the perimeter of the incision formed on the needle body 1 is larger, so that extra puncture scraps are easily caused, and the test precision is affected.
The cylindrical cam 7 is mounted on the main bracket 6 and the axis thereof is in a vertical direction, and as shown in fig. 10, the cylindrical cam 7 is provided with a curved groove which comprises a horizontal portion 10, an ascending portion 11 and a descending portion 12, the central angle of the horizontal portion 10 is 180 °, and the central angles of the ascending portion 11 and the descending portion 12 are 90 °.
The puncture outfit bracket 8 is vertically and slidably arranged on the main bracket 6, a first roller 13 matched with the curve groove is arranged on the puncture outfit bracket 8, and the puncture outfit is fixedly arranged on the puncture outfit bracket 8.
The syringe comprises a syringe barrel 14, a plunger 15 and a plunger support 16. The syringe barrel 14 is fixedly arranged on the main bracket 6, the syringe barrel 14 is connected with the water tank 9 through a water suction pipe 17, and a first one-way valve 18 which is communicated with the syringe barrel 14 from the water tank 9 in a one-way is arranged in the water suction pipe 17. The injector tube 14 is connected with the puncture outfit through a water injection tube 19, the water injection tube 19 is a hose, and a second one-way valve 20 which is communicated with the puncture outfit in one way by the injector tube 14 is arranged in the water injection tube 19. The piston 15 is vertically slidably mounted in the syringe barrel 14, and a sealing ring 31 is provided between the piston 15 and the syringe barrel 14. The piston support 16 is fixedly connected with the piston 15, a second roller 21 matched with the curve groove is arranged on the piston support 16, and a connecting line of the first roller 13 and the second roller 21 passes through the axis of the cylindrical cam 7.
A container holder is mounted on the main support 6 below the piercer for positioning and gripping the container 30. As shown in fig. 4 and 7, the container clamp includes a fixing clamp block 22, a sliding clamp block 23 and a locking bolt 24, the fixing clamp block 22 is fixedly installed at one side of the main bracket 6, and the sliding clamp block 23 is horizontally slidably installed at the other side of the main bracket 6. The locking bolt 24 is in threaded connection with the main support 6 and can push the sliding clamping block 23 to slide inwards, and the locking bolt 24 is a butterfly bolt and is convenient to screw. The container 30 in this embodiment is cylindrical, and thus the fixed clamp block 22 and the sliding clamp block 23 are provided with arc surfaces matching the container 30.
As shown in fig. 6, the damping mechanism comprises a damping shaft 25, a damping pin 26 and a damping spring 27, wherein the damping shaft 25 is fixedly connected with the cylindrical cam 7 coaxially, the damping pin 26 can be horizontally and slidably arranged on the main support 6, the end part of the damping pin 26 is provided with a spherical surface, the damping spring 27 is arranged between the damping pin 26 and the main support 6 and generates a force towards the damping shaft 25 on the damping pin 26, and the damping shaft 25 is provided with a pin hole matched with the damping pin 26. When the damper pin 26 is inserted into the pin hole, the first roller 13 is located at the highest point of the curved groove. Since a certain torque is required to disengage the damper pin 26 from the pin hole against the elastic force, the damper mechanism can prevent the cylindrical cam 7 from being excessively rotated.
In order to facilitate the rotation of the cylindrical cam 7, a knob 28 coaxial therewith is fixed to one end of the cylindrical damper shaft 25.
The embodiment also provides a method for performing puncture and chip test by using the puncture and chip test device, which comprises the following steps:
A. Taking a sample of the combined cover 29 and assembling the sample on a matched container 30, wherein water is filled in the container 30;
B. In the initial position, as shown in fig. 12, the first roller 13 is located at the highest point of the curved groove, the second roller 21 is located at the midpoint of the horizontal portion 10, and the cylindrical cam is set at the 0 ° position;
C. Placing the container 30 right under the puncture outfit, and rotating the cylindrical cam 7;
D. In the process of rotating the cylindrical cam 7 from 0 degrees to 90 degrees, the descending part 12 descends the first roller 13 to the lowest point, so that the puncture outfit pierces the combined cover 29, the horizontal part 10 does not generate vertical acting force on the second roller 21, and therefore the piston 15 does not act, and the cylindrical cam 7 rotates to 90 degrees as shown in fig. 13;
E. In the process that the cylindrical cam 7 rotates from 90 degrees to 180 degrees, the horizontal part 10 does not generate vertical acting force on the first roller 13, so that the puncture outfit does not act, the rising part 11 makes the second roller 21 rise to the highest point, so that the piston 15 rises, under the positive pressure action in the syringe barrel 14, water in the syringe is injected into the water injection channel 3 through the water injection pipe 19, the water flows out through the water outlet 4 arranged on the outer circular surface of the needle body 1 and/or the conical surface of the needle head 2 and flows down along the needle body 1, and falling scraps attached to the needle body 1 are flushed into the container 30, as shown in fig. 14, and the cylindrical cam 7 rotates to 180 degrees;
F. In the process that the cylindrical cam 7 rotates from 180 degrees to 270 degrees, the horizontal part 10 does not generate vertical acting force on the first roller 13, so that the puncture outfit does not act, the descending part 12 descends the second roller 21 to the lowest point, the piston 15 descends, and under the action of negative pressure in the syringe barrel 14, water in the water tank 9 enters the syringe barrel 14 from the water suction pipe 17, and as shown in fig. 15, the cylindrical cam 7 rotates to 270 degrees;
G. In the course of the rotation of the cylindrical cam 7 from 270 ° to 360 ° (0 °), the rising portion 11 rises the first roller 13 to the highest point, the puncture outfit is pulled out from the combination cap 29, the horizontal portion 10 does not exert a vertical force on the second roller 21, and therefore the piston 15 does not act;
H. The combined cover 29 is removed, and the water in the container 30 is filtered through the quick filter paper to ensure that no falling scraps remain in the container 30, and the number of falling scraps on the quick filter paper is observed by naked eyes under natural light.
Example two
As shown in fig. 16 and 17, the puncture outfit in this embodiment includes a needle body 1 and a quick insertion tube connector 5, one end of the needle body 1 is provided with a conical needle head 2, a water injection channel 3 is provided in the needle body 1, unlike the first embodiment, the water outlets 4 are provided with four on the conical surface of the needle head 2 and uniformly distributed along the circumferential direction of the needle head 2 at intervals, and the water outlets 4 are communicated with the water injection channel 3. The water injected into the water injection channel 3 flows out along a plurality of evenly distributed water outlets 4, the coverage area of the water flow is large, and the flushing effect on fallen scraps is good.
Example III
As shown in fig. 18, the puncture outfit in this embodiment includes a needle body 1 and a quick cannula connector 5, one end of the needle body 1 is provided with a conical needle head 2, a water injection channel 3 is provided in the needle body 1, unlike the first embodiment, a water outlet 4 is provided on the outer circular surface of the needle body 1, and the water outlet 4 is communicated with the water injection channel 3.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.
Claims (4)
1. The utility model provides a puncture detritus test device which characterized in that: comprises a puncture outfit, a main bracket (6), a cylindrical cam (7), a puncture outfit bracket (8), an injector and a water tank (9); the puncture outfit comprises a needle body (1) and a quick cannula connector (5), wherein a needle head (2) is arranged at one end of the needle body (1), a water injection channel (3) is arranged in the needle body (1), a water outlet (4) is formed in the outer circular surface of the needle body (1) and/or the conical surface of the needle head (2), and the water outlet (4) is communicated with the water injection channel (3); the diameter of the water outlet (4) is 0.5 mm; the quick cannula joint (5) is in threaded connection with the needle body (1) and is communicated with the water injection channel (3); the water outlets (4) are arranged on the conical surface of the needle head (2) and are uniformly distributed along the circumferential direction of the needle head (2) at intervals; the cylindrical cam (7) is arranged on the main support (6) and the axis of the cylindrical cam is in the vertical direction, the cylindrical cam (7) is provided with a curve groove, the curve groove comprises a horizontal part (10), an ascending part (11) and a descending part (12), the central angle of the horizontal part (10) is 180 degrees, and the central angles of the ascending part (11) and the descending part (12) are 90 degrees; the puncture outfit bracket (8) is vertically and slidably arranged on the main bracket (6), a first roller (13) matched with the curve groove is arranged on the puncture outfit bracket (8), and the puncture outfit is fixedly arranged on the puncture outfit bracket (8); the injector comprises an injector cylinder (14), a piston (15) and a piston support (16), wherein the injector cylinder (14) is fixedly arranged on a main support (6), the injector cylinder (14) is connected with a water tank (9) through a water suction pipe (17), a first one-way valve (18) which is unidirectionally conducted from the water tank (9) to the injector cylinder (14) is arranged in the water suction pipe (17), the injector cylinder (14) is connected with a puncture outfit through a water injection pipe (19), and a second one-way valve (20) which is unidirectionally conducted from the injector cylinder (14) to the puncture outfit is arranged in the water injection pipe (19); the piston (15) is vertically and slidably arranged in the injector cylinder (14), the piston support (16) is fixedly connected with the piston (15), a second roller (21) matched with the curve groove is arranged on the piston support (16), and a connecting line of the first roller (13) and the second roller (21) penetrates through the axis of the cylindrical cam (7); the damping mechanism comprises a damping shaft (25), a damping pin (26) and a damping spring (27), wherein the damping shaft (25) is fixedly connected with the cylindrical cam (7) in a coaxial way, the damping pin (26) is horizontally and slidably arranged on the main support (6), a spherical surface or a conical surface is arranged at the end part of the damping pin (26), the damping spring (27) is arranged between the damping pin (26) and the main support (6) and generates acting force towards the damping shaft (25) on the damping pin (26), and a pin hole matched with the damping pin (26) is formed in the damping shaft (25); when the damping pin (26) is inserted into the pin hole, the first roller (13) is positioned at the highest point of the curved groove; the rotary knob (28) is coaxially and fixedly connected with the cylindrical cam (7).
2. The puncture and chip test device according to claim 1, wherein: the puncture device also comprises a container clamp which is arranged on the main bracket (6) and is positioned below the puncture device.
3. The puncture and chip test device according to claim 2, wherein: the container clamp comprises a fixed clamping block (22), a sliding clamping block (23) and a locking bolt (24), wherein the fixed clamping block (22) is fixedly arranged on one side of a main support (6), and the sliding clamping block (23) can be horizontally and slidably arranged on the other side of the main support (6); the locking bolt (24) is in threaded connection with the main support (6) and can push the sliding clamping block (23) to slide inwards.
4. A method of performing a puncture chip test using the puncture chip test device of any one of claims 1-3, comprising the steps of:
A. taking a sample of the combined cover (29) and assembling the sample on a matched container (30), wherein water is filled in the container (30);
B. At the initial position, the first roller (13) is positioned at the highest point of the curve groove, the second roller (21) is positioned at the midpoint of the horizontal part (10), and the cylindrical cam is positioned at the 0-degree position;
C. placing the container (30) under the puncture outfit, and rotating the cylindrical cam (7);
D. In the process that the cylindrical cam (7) rotates from 0 degrees to 90 degrees, the descending part (12) enables the first roller (13) to descend to the lowest point, the puncture outfit pierces the combined cover (29), the horizontal part (10) does not generate vertical acting force on the second roller (21), and therefore the piston (15) does not act;
E. In the process that the cylindrical cam (7) rotates from 90 degrees to 180 degrees, the horizontal part (10) does not generate vertical acting force on the first roller (13), so that the puncture outfit does not act, the rising part (11) enables the second roller (21) to rise to the highest point, the piston (15) is enabled to rise, water in the injector is injected into the water injection channel (3) through the water injection pipe (19) under the positive pressure effect in the injector cylinder (14), and the water flows out through the water outlet (4) arranged on the outer circular surface of the needle body (1) and/or the conical surface of the needle head (2) and flows down along the needle body (1), and the falling scraps attached to the needle body (1) are flushed into the container (30);
F. In the process that the cylindrical cam (7) rotates from 180 degrees to 270 degrees, the horizontal part (10) does not generate vertical acting force on the first roller (13), so that the puncture outfit does not act, the descending part (12) descends the second roller (21) to the lowest point, the piston (15) descends, and under the negative pressure effect in the syringe barrel (14), water in the water tank (9) enters the syringe barrel (14) through the water suction pipe (17);
G. In the process that the cylindrical cam (7) rotates from 270 degrees to 360 degrees, the rising part (11) enables the first roller (13) to rise to the highest point, the puncture outfit is pulled out of the combined cover (29), the horizontal part (10) does not generate vertical acting force on the second roller (21), and therefore the piston (15) does not act;
H. and (3) taking off the combined cover (29), filtering all water in the container (30) through the quick filter paper, ensuring that no falling scraps remain in the container (30), and visually observing the number of falling scraps on the quick filter paper under natural light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910835160.0A CN110579348B (en) | 2019-09-05 | 2019-09-05 | Puncture device, device and method for puncture chip falling test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910835160.0A CN110579348B (en) | 2019-09-05 | 2019-09-05 | Puncture device, device and method for puncture chip falling test |
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| Publication Number | Publication Date |
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| CN110579348A CN110579348A (en) | 2019-12-17 |
| CN110579348B true CN110579348B (en) | 2024-05-28 |
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