CN219084995U - Floating microneedle test structure with cylinder pressed down - Google Patents

Abstract

The embodiment of the utility model discloses a floating microneedle test structure pressed down by an air cylinder, which comprises a pressing plate and a microneedle floating mechanism arranged on the pressing plate; an elastic piece is vertically arranged on the microneedle floating mechanism; the elastic piece is clamped between the microneedle floating mechanism and the pressing plate, and a gap is arranged between the microneedle floating mechanism and the pressing plate; the microneedle floating mechanism comprises a supporting plate, a linear bearing, a limit strip and a testing mechanism; the limit strip and the linear bearing are respectively connected with the pressing plate and the supporting plate; the testing mechanism is connected with the bottom surface of the supporting plate through a first connecting piece. According to the embodiment of the utility model, the elastic piece is matched with the micro-needle floating mechanism, so that the micro-needle floating mechanism can be used for independently testing the element to be tested, and the accuracy is improved.

Description

Floating microneedle test structure with cylinder pressed down

Technical Field

The utility model relates to the technical field of high-end equipment manufacturing, in particular to a floating microneedle test structure for cylinder pressing.

Background

In the prior art, the micro-needle test structure mostly moves along with the pressing plate, after the pressing plate presses down the element to be tested, the micro-needle test structure is also connected with the element to be tested, so that the micro-needle test structure and other test structures arranged on the pressing plate simultaneously test the element, and the other test structures are caused to interfere with the micro-needle test structure. Therefore, the micro-needle test structure needs to be changed into a single test item, and after the pressing plate presses the element to be tested and completes the test of other items, the micro-needle test structure starts to connect the element to be tested for the single test.

Disclosure of Invention

The utility model aims to provide a floating micro-needle test structure with a cylinder pressed down, and aims to solve the problem that a micro-needle test structure in the prior art cannot independently test a component to be tested.

In order to solve the technical problems, the aim of the utility model is realized by the following technical scheme: the floating microneedle test structure comprises a pressing plate and a microneedle floating mechanism arranged on the pressing plate; an elastic piece is vertically arranged on the microneedle floating mechanism; the elastic piece is clamped between the microneedle floating mechanism and the pressing plate, and a gap is arranged between the microneedle floating mechanism and the pressing plate; the microneedle floating mechanism comprises a supporting plate, a linear bearing, a limit strip and a testing mechanism; one end of the limiting strip is fixedly connected to the pressing plate, and the other end of the limiting strip is slidably connected to the supporting plate and used for limiting the supporting plate in the vertical upward direction; one end of the linear bearing is fixedly connected to the pressing plate, and the other end of the linear bearing is slidably connected to the supporting plate and is used for guiding the movement of the supporting plate in the vertical direction; the testing mechanism is connected with the bottom surface of the supporting plate through a first connecting piece;

further, the elastic piece is a first spring;

further, one end of the first spring is abutted with a first spring groove formed in the supporting plate, and the other end of the first spring is abutted with a second spring groove formed in the pressing plate; one end of the limiting strip is fixedly arranged in a first fixing hole on the pressing plate, and the other end of the limiting strip is slidably arranged in a first through hole on the supporting plate; one end of the linear bearing is fixedly arranged in a second fixing hole on the pressing plate, and the other end of the linear bearing is slidably arranged in a second through hole on the supporting plate;

further, the limiting strip is a screw, and the screw comprises a screw head, a first screw strip and a second screw strip which are sequentially connected and sequentially reduced in diameter; the second screw rod is in threaded connection with the first fixing hole, the surface of the first screw rod is smooth and exposed on the upper surface of the pressing plate, the first through hole is a through counter bore, and the screw head is arranged in the counter bore;

further, the linear bearing comprises a linear bar sleeve arranged in the second through hole in a sliding manner and a linear bar fixedly arranged in the linear bar sleeve, one end of the linear bar penetrates through the linear bar sleeve, and the other end of the linear bar is fixedly arranged in the second fixing hole;

further, the testing mechanism comprises a first fixing plate, an upper needle block, a second fixing plate and a lower needle block which are sequentially connected; the second fixing plate is connected with the supporting plate through the first connecting piece; the first fixing plate and the upper needle block are both fixed on the second fixing plate through a second connecting piece; the second fixing plate is provided with a groove, and the lower needle block is arranged in the groove;

further, a third spring groove is formed in the upper needle block, and a fourth spring groove is formed in the lower needle block; a second spring is clamped between the third spring groove and the fourth spring groove;

further, a probe groove is further formed in the upper needle block, a first probe through hole is formed in the probe groove, and a probe arranged on the upper needle block penetrates through the first probe through hole;

further, the bottom of the groove is hollowed, the lower needle block extends out of the hollowed part to form a limit groove, and the bottom of the upper needle block is embedded into the limit groove; the bottom of the limit groove is provided with a profiling groove for aligning the element to be tested; a second probe through hole for adapting to the probe is arranged in the imitation groove;

further, still include cylinder mechanism, still be provided with the support column in the backup pad, cylinder mechanism is used for to the support column pushes down.

The embodiment of the utility model provides a floating microneedle test structure pressed down by an air cylinder, which comprises a pressing plate and a microneedle floating mechanism arranged on the pressing plate; an elastic piece is vertically arranged on the microneedle floating mechanism; the elastic piece is clamped between the microneedle floating mechanism and the pressing plate, and a gap is arranged between the microneedle floating mechanism and the pressing plate; the microneedle floating mechanism comprises a supporting plate, a linear bearing, a limit strip and a testing mechanism; the limit strip and the linear bearing are respectively connected with the pressing plate and the supporting plate; the testing mechanism is connected with the bottom surface of the supporting plate through a first connecting piece. According to the embodiment of the utility model, the elastic piece is matched with the micro-needle floating mechanism, so that the micro-needle floating mechanism can be used for independently testing the element to be tested, and the accuracy is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic structural diagram of a floating microneedle test structure with cylinder pressing down according to an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of a floating microneedle test structure with cylinder depressed according to an embodiment of the present utility model;

FIG. 3 is another cross-sectional view of a cylinder depressed floating microneedle test structure according to an embodiment of the present utility model;

fig. 4 is a schematic structural diagram of a limit bar according to an embodiment of the present utility model;

FIG. 5 is a schematic structural view of a linear bearing according to an embodiment of the present utility model;

FIG. 6 is a schematic structural view of a microneedle floating mechanism according to an embodiment of the present utility model;

FIG. 7 is a cross-sectional view of a microneedle flotation mechanism provided by an embodiment of the present utility model;

FIG. 8 is another cross-sectional view of a microneedle flotation mechanism provided by an embodiment of the present utility model;

FIG. 9 is an exploded view of a test mechanism according to an embodiment of the present utility model;

fig. 10 is a schematic structural diagram of an upper needle block according to an embodiment of the present utility model;

FIG. 11 is a schematic diagram of another structure of an upper needle block according to an embodiment of the present utility model;

fig. 12 is a schematic structural view of a lower needle block according to an embodiment of the present utility model;

FIG. 13 is a schematic view of another structure of the lower needle block according to the embodiment of the present utility model;

fig. 14 is a schematic structural view of a second fixing plate according to an embodiment of the present utility model;

fig. 15 is a schematic structural diagram of a second fixing plate and a lower needle block according to an embodiment of the present utility model.

The figure identifies the description:

a microneedle floating mechanism 10;

a first spring 11; a first spring groove 111; a second spring groove 112;

a support plate 12; a first through hole 121; a counterbore 1211; a second through hole 122; a support column 123;

a linear bearing 13; a linear sleeve 131; a straight line 132;

a limit bar 14; a screw head 141; a first thread strip 142; a second thread strip 143;

a test mechanism 15; a first fixing plate 151; an upper needle block 152; a third spring groove 1521; a probe groove 1522; a first probe via 1523; a probe 1524; a second fixing plate 153; a recess 1531; a lower needle block 154; fourth spring slot 1541; limit slots 1542; profile slots 1543; a second probe via 1545;

a pressing plate 20;

a first fixing hole 21; a second fixing hole 22; a first connector 23; a second connector 24; a second spring 25;

a cylinder mechanism 30.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be understood that the terms "comprises" and "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It is also to be understood that the terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be further understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.

Referring to fig. 1 to 6, an embodiment of the present utility model provides a floating microneedle test structure with a cylinder pressed down, which includes a pressing plate 20 and a microneedle floating mechanism 10 disposed on the pressing plate 20; an elastic piece is vertically arranged on the microneedle floating mechanism 10; the elastic piece is clamped between the micro-needle floating mechanism 10 and the pressing plate 20, and a gap is arranged between the micro-needle floating mechanism 10 and the pressing plate 20;

the microneedle floating mechanism 10 comprises a supporting plate 12, a linear bearing 13, a limit bar 14 and a testing mechanism 15; one end of the limiting strip 14 is fixedly connected to the pressing plate 20, and the other end of the limiting strip is slidably connected to the supporting plate 12 and is used for limiting the supporting plate 12 in the vertical upward direction; one end of the linear bearing 13 is fixedly connected to the pressing plate 20, and the other end of the linear bearing is slidably connected to the supporting plate 12, and is used for guiding the movement of the supporting plate 12 in the vertical direction; the test mechanism 15 is connected to the bottom surface of the support plate 12 by a first connector 23.

In this embodiment, the elastic member vertically disposed on the microneedle floating mechanism 10 can spring up the microneedle floating mechanism 10, so that a gap is left between the microneedle floating mechanism 10 and the pressing plate 20; the gap is 3 mm under the action of the elastic member and the limit bar 14 on the microneedle floating mechanism 10. Of course, there may be a gap of 2 mm or 4 mm, where the elasticity of the elastic member and the length of the limit bar 14 may be adaptively set, which is not limited herein; thus, components with different specifications can be tested, and only the elastic piece and the limit strip 14 need to be replaced. The microneedle float mechanism 10 moves with the platen 20 when not in operation, but does not contact the element to be tested; after the testing of the other test items is completed, the micro-needle floating mechanism 10 starts to press down to perform the individual test on the element to be tested.

Further, one end of the limiting bar 14 and one end of the linear bearing 13 on the microneedle floating mechanism 10 are connected to the pressing plate 20, and one end of the limiting bar 14 and one end of the linear bearing 13 are slidably connected to the supporting plate 12 on the microneedle floating mechanism 10. The limit bar 14 and the linear bearing 13 are used for controlling the gap between the support plate 12 and the pressing plate 20 on the microneedle floating mechanism 10; the linear bearing 13 ensures the position accuracy of the microneedle test mechanism 10 when being pressed down, namely plays a role in guiding. It should be noted that 3 linear bearings 13 are employed in the present embodiment to guide the vertical movement of the support plate 12; the number of the limit bars 14 is 2, and the limit bars are respectively arranged at two ends of the supporting plate 12. Of course, the number of the linear bearings 13 and the limit bars 14 to be mounted is larger than the area of the support plate 12 and the pressure plate 20, and if the area is larger, more linear bearings 13 and limit bars 14 are required; similarly, the smaller the area, the fewer the linear bearings 13 and the stopper pieces 14 can be installed. And for the elastic piece, the higher the elasticity of the elastic piece is, the smaller the elastic piece is, the microneedle floating mechanism 10 can be supported to keep a gap.

In addition, the test mechanism 15 on the microneedle floating mechanism 10 is connected with the bottom surface of the support plate 12 through the first connecting piece 23, namely, a hollow part is arranged in the middle of the support plate 12, and the test mechanism 15 passes through the hollow part and is fixed on the bottom surface of the support plate 12 by using the first connecting piece 23. The first connecting piece 23 is fixed by a screw, and the subsequent disassembly work is convenient, and if other replaceable fixing parts are available, the fixing parts can be replaced by themselves.

In one embodiment, the elastic member is a first spring 11.

In the present embodiment, the first spring 11 may be a different type of spring, so as to limit the elasticity of the spring; in addition, springs made of different materials can influence the elasticity of the springs. The spring is not limited to the above, and may be any other elastic member that can be set by itself.

In an embodiment, one end of the first spring 11 is abutted with a first spring groove 111 formed on the supporting plate 12, and the other end of the first spring 11 is abutted with a second spring groove 112 formed on the pressing plate 20; one end of the limit bar 14 is fixedly arranged in a first fixing hole 21 on the pressing plate 20, and the other end of the limit bar 14 is slidably arranged in a first through hole 121 on the supporting plate 12; one end of the linear bearing 13 is fixedly arranged in the second fixing hole 22 on the pressing plate 20, and the other end of the linear bearing 13 is slidably arranged in the second through hole 122 on the supporting plate 12.

In the present embodiment, the first spring groove 111 and the second spring groove 112 are aligned with each other and the first spring 11 is provided therein, the second spring groove 112 provided on the pressing plate 20 serves as the bottom portion on which the first spring 11 is mounted, and the first spring groove 111 provided on the supporting plate 12 serves as the top portion on which the first spring 11 is mounted. The microneedle float mechanism 10 is much lighter in weight than the pressure plate 20, so the first spring 11 lifts the support plate 12 so that the microneedle float mechanism 10 floats on the pressure plate 20. Each first spring 11 is provided, a corresponding first spring groove 111 and a second spring groove 112 are required to accommodate the first spring 11; after the same number of first springs 11 is selected, the more first springs 11 are provided, the more the elastic force of the microneedle float mechanism 10 is, and the larger the gap between the microneedle float mechanism 10 and the platen 20 is.

In addition, one end of the limiting bar 14 is fixed in the first fixing hole 21, and one end of the linear bearing 13 is fixed in the second fixing hole 22; the parts in the first fixing hole 21 and the second fixing hole 22 and assembled are in a fixed state, and cannot be moved or taken out in normal operation, and only the parts need to be disassembled or replaced when the operation is stopped. The other end of the limit bar 14 is arranged in the first through hole 121 in a sliding way, and the other end of the linear bearing 13 is arranged in the second through hole 122 in a sliding way; the parts in the first through hole 121 and the second through hole 122 and assembled are in a sliding connection state, that is, when the supporting plate 12 floats up and down, the parts move up and down around the vertical direction of the limit bar 14 and the linear bearing 13.

In one embodiment, the limiting bar 14 is a screw comprising a screw head 141, a first screw bar 142 and a second screw bar 143 connected in sequence and decreasing in diameter in sequence; the second screw rod 143 is screwed in the first fixing hole 21, the surface of the first screw rod 142 is smooth and exposed on the upper surface of the pressing plate 20, the first through hole 121 is a through counterbore 1211, and the screw head 141 is installed in the counterbore 1211.

In the present embodiment, the limiting bar 14 uses a contour screw to limit the moving range of the support plate 12; the second thread strip 143 is screwed in the first fixing hole 21, and may be fixed by other fastening structures, and is also convenient to detach. The first thread strip 142 is smooth in surface and serves to accommodate sliding movement of the support plate 12. A screw head 141 is arranged in the counterbore 1211, and the diameter of the screw head 141 is larger than that of the counterbore 1211; the support plate 12 is sprung upward by the first spring 11, and when the counterbore 1211 provided in the support plate 12 abuts against the screw head 141, the support plate 12 stops moving upward, and the support plate 12 reaches the ceiling. Since the second thread strip 143 is fixed in the first fixing hole 21, the limit strip 14 is not ejected out of the support plate 12, resulting in the limit strip 14 being separated from the pressing plate 20. It should be noted that the contour screw adopted in the embodiment may also be replaced by other parts, such as a contour sleeve; the method can be specifically selected according to actual conditions.

In an embodiment, the linear bearing 13 includes a linear bar sleeve 131 slidably disposed in the second through hole 122 and a linear bar 132 fixedly disposed in the linear bar sleeve 131, one end of the linear bar 132 passes through the linear bar sleeve 131, and the other end of the linear bar 132 is fixedly disposed in the second fixing hole 22.

In the present embodiment, the linear bar 132 is fixed in the linear bar sleeve 131, and one end of the linear bar 132 passes through the linear bar sleeve 131, and the other end of the linear bar 132 is fixedly disposed in the second fixing hole 22; the linear bar sleeve 131 can slide within the second through hole 122 in order to provide a guiding action for the microneedle floating mechanism 10. The linear bearing 13 is split into two parts, but the linear bearing 13 may be integrally provided, and the guiding function of the microneedle floating mechanism 10 may be similarly provided.

Referring to fig. 7 to 9, in an embodiment, the test mechanism 15 includes a first fixing plate 151, an upper needle block 152, a second fixing plate 153, and a lower needle block 154, which are sequentially connected; the second fixing plate 153 is connected to the support plate 12 through the first connection member 23; the first fixing plate 151 and the upper needle block 152 are fixed on the second fixing plate 153 through the second connecting piece 24; the second fixing plate 153 is provided with a recess 1531, and the lower needle block 154 is disposed in the recess 1531.

In the present embodiment, the first connecting members 23 connect the second fixing plate 153 and the support plate 12, and four first connecting members 23 are used for fixing connection, i.e., are respectively installed at four corners of the second fixing plate 153; the second fixing plate 153 and the supporting plate 12 are respectively provided with corresponding holes for connecting the first connecting piece 23. The second connecting piece 24 connects and fixes the first fixing plate 151 and the upper needle block 152 on the second fixing plate 153; similarly, the first fixing plate 151 and the upper needle block 152 are provided with corresponding holes for fixedly connecting the second connecting piece 24. In addition, the first fixing plate 151 is made of a PCB (which is mainly made of stacked copper and resin).

In addition, the second fixing plate 153 is provided with a groove 1531, and the lower needle block 154 is embedded in the groove 1531 to play a limiting role; after the lower needle block 154 is inserted into the recess 1531, the lower needle block 154 may be fixed to the second fixing plate 153 by a fixing member such as a screw. It should be noted that the second connecting member 24 is a screw in the present embodiment, and can be replaced by itself if there are alternative parts in the practical application.

In one embodiment, the upper needle block 152 is provided with a third spring slot 1521 and the lower needle block 154 is provided with a fourth spring slot 1541; the second spring 25 is sandwiched between the third spring groove 1521 and the fourth spring groove 1541.

In the present embodiment, the third spring groove 1521 and the fourth spring groove 1541 are aligned with each other and the second spring 25 is provided therein, the second spring groove 112 provided on the lower needle block 154 serves as the bottom portion where the second spring 25 is mounted, and the third spring groove 1521 provided on the upper needle block 152 serves as the top portion where the second spring 25 is mounted. When the lower needle block 154 is forced, the second spring 25 is compressed and the fourth spring slot 1541 gradually approaches the third spring slot 1521 until the surface of the lower needle block 154 abuts the surface of the upper needle block 152; when the lower needle block 154 is unstressed, the second spring 25 recoils the lower needle block 154 back to the initial position. It should be noted that the second springs 25 may be provided in plural numbers, specifically, in combination with the actual situation.

As shown in fig. 10 and 11, in an embodiment, a probe groove 1522 is further provided on the upper needle block 152, a first probe through hole 1523 is provided in the probe groove 1522, and a probe 1524 provided on the upper needle block 152 passes through the first probe through hole 1523.

In the present embodiment, the probe groove 1522 is provided to protect the probe 1524 from being knocked by other parts by exposing a portion of the first probe through hole 1523 close to the first fixing plate 151; each of the first through-holes 1523 is correspondingly provided with a probe 1524, and the number of the probes 1524 is adapted according to the tested device.

Referring to fig. 12 to 15, in an embodiment, the bottom of the recess 1531 is hollowed and the lower needle block 154 extends out of the hollowed portion to form a limit groove 1542, and the bottom of the upper needle block 152 is embedded in the limit groove 1542; the bottom of the limit groove 1542 is provided with a profiling groove 1543 for aligning the element to be tested; a second probe through hole 1545 for fitting the probe 1524 is provided in the profiling groove 1543.

In the present embodiment, after the upper pin block 152 is embedded in the limiting groove 1542, each first probe through hole 1523 corresponds to the second probe through hole 1545; the probe 1524 is hidden in the first probe through hole 1523 when the micro-needle floating mechanism 10 is not in operation, and when the micro-needle floating mechanism 10 is in operation, the lower needle block 154 starts to move toward the upper needle block 152, and the probe 1524 protrudes from the second probe through hole 1545, so as to test the device to be tested. The imitation groove 1543 is mainly used for fixing the element to be tested and preventing the element to be tested from falling out of the test position in the test process; the shape of the shaped recess 1543 may be matched to the shape of the component to be tested.

In one embodiment, the floating microneedle test structure further comprises a cylinder mechanism 30, and the support plate 12 is further provided with a support column 123, and the cylinder mechanism 30 is used for pressing down the support column 123.

In the present embodiment, the cylinder mechanism 30 presses down the support column 123 so that the microneedle floating mechanism 10 starts testing the element to be tested; the purpose of the support post 123 is that the cylinder mechanism 30 is not directly touched to the microneedle float mechanism 10 when pressed down, and the direct touching to the microneedle float mechanism 10 may cause some parts on the microneedle float mechanism 10 to be crushed by the cylinder mechanism 30. In addition, the cylinder mechanism 30 is only used as a power machine for pushing the microneedle floating mechanism 10 to work, and other power machines which can replace the cylinder mechanism 30 can be replaced.

While the utility model has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made and equivalents will be apparent to those skilled in the art without departing from the scope of the utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims (10)

1. The floating microneedle test structure is characterized by comprising a pressing plate and a microneedle floating mechanism arranged on the pressing plate; an elastic piece is vertically arranged on the microneedle floating mechanism; the elastic piece is clamped between the microneedle floating mechanism and the pressing plate, and a gap is arranged between the microneedle floating mechanism and the pressing plate;

the microneedle floating mechanism comprises a supporting plate, a linear bearing, a limit strip and a testing mechanism; one end of the limiting strip is fixedly connected to the pressing plate, and the other end of the limiting strip is slidably connected to the supporting plate and used for limiting the supporting plate in the vertical upward direction; one end of the linear bearing is fixedly connected to the pressing plate, and the other end of the linear bearing is slidably connected to the supporting plate and is used for guiding the movement of the supporting plate in the vertical direction; the testing mechanism is connected with the bottom surface of the supporting plate through a first connecting piece.

2. The floating microneedle test structure of claim 1, wherein the resilient member is a first spring.

3. The floating microneedle test structure of claim 2, wherein one end of the first spring is in abutment with a first spring groove formed in the support plate, and the other end of the first spring is in abutment with a second spring groove formed in the pressure plate; one end of the limiting strip is fixedly arranged in a first fixing hole on the pressing plate, and the other end of the limiting strip is slidably arranged in a first through hole on the supporting plate; one end of the linear bearing is fixedly arranged in a second fixing hole on the pressing plate, and the other end of the linear bearing is slidably arranged in a second through hole on the supporting plate.

4. The floating microneedle test structure of claim 3, wherein the stop bar is a screw comprising a screw head, a first screw bar and a second screw bar connected in sequence and decreasing in diameter in sequence; the second screw rod is in threaded connection in the first fixed orifices, first screw rod surface smoothness set up and expose in the clamp plate upper surface, first through-hole is the counter bore that link up, the screw head install in the counter bore.

5. The floating microneedle test structure of claim 3, wherein the linear bearing comprises a linear bar sleeve slidably disposed in the second through hole and a linear bar fixedly disposed in the linear bar sleeve, one end of the linear bar penetrates through the linear bar sleeve, and the other end of the linear bar is fixedly disposed in the second fixing hole.

6. The floating microneedle test structure of claim 1, wherein the test mechanism comprises a first fixed plate, an upper needle block, a second fixed plate, and a lower needle block connected in sequence; the second fixing plate is connected with the supporting plate through the first connecting piece; the first fixing plate and the upper needle block are both fixed on the second fixing plate through a second connecting piece; the second fixing plate is provided with a groove, and the lower needle block is arranged in the groove.

7. The floating microneedle test structure of claim 6, wherein the upper needle block is provided with a third spring slot and the lower needle block is provided with a fourth spring slot; and a second spring is clamped between the third spring groove and the fourth spring groove.

8. The floating microneedle test structure of claim 6, wherein the upper needle block is further provided with a probe groove, a first probe through hole is provided in the probe groove, and a probe provided on the upper needle block passes through the first probe through hole.

9. The floating microneedle test structure of claim 8, wherein the bottom of the recess is hollowed and the lower needle block extends out of the hollowed out place to form a limit groove, and the bottom of the upper needle block is embedded into the limit groove; the bottom of the limit groove is provided with a profiling groove for aligning the element to be tested; and a second probe through hole used for adapting to the probe is arranged in the imitation groove.

10. The floating microneedle test structure of claim 1, further comprising a cylinder mechanism, wherein the support plate is further provided with a support column, and the cylinder mechanism is configured to press down the support column.

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