Solvent acupuncture needle limiting linkage mechanism

Abstract

The utility model discloses a solvent pricking needle limiting linkage mechanism, which relates to the field of medicine dispensing and liquid injection equipment, and adopts the technical scheme that the solvent pricking needle limiting linkage mechanism comprises a suspension frame, an injection needle, a lifting plate, a side plate, a limiting groove and a pressing plate, a lifting plate is transversely arranged at the output end of the needling linear module, side plates are downwards arranged at the two ends of the lifting plate respectively, limiting grooves are formed in the inner sides of the lower ends of the side plates respectively, the upper ends of the limiting grooves are open, pressing plates are arranged on the portions, corresponding to the limiting grooves, of the side plates respectively, and the pressing plates are in transverse sliding fit relative to the side plates. The pressing plate is driven by the linkage device to be away from and close to the position above the limiting groove, the solvent infusion bag set comprises a plurality of solvent infusion bags and a connecting plate, and a filling opening of each solvent infusion bag is fixed to the connecting rod. By means of the up-and-down lifting process of the lifting plate, sliding of the pressing plate is driven, the design is quite ingenious, liquid injection can be conducted on a plurality of solvent infusion bags at a time, and the liquid injection efficiency is quite high.

Description

Technical Field

[0001] The utility model relates to the field of medicine dispensing and liquid injection equipment, in particular to a solvent needle-piercing limiting linkage mechanism. Background Art

[0002] Intravenous infusion is one of the most common ways to treat patients in medical institutions at all levels in my country; the number of hospitals using intravenous drug dispensing centers has increased rapidly, striving to solve the greater occupational hazards of medical and health workers who have to dispense large amounts of harmful drugs for a long time. In the realization of drug dispensing automation, the injection of bottles containing intravenous drugs is one of the key factors to replace manual labor. The existing manipulator can only inject one at a time, which is inefficient for large-scale injection needs. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a solvent needle limit linkage mechanism, which utilizes the process of lifting and lowering the lifting plate to drive the pressure plate to slide. The design is very clever and can inject liquid into multiple solvent infusion bags at one time, with very high injection efficiency.

[0004] The utility model solves the technical problem by adopting the following technical solution: a solvent injection limit linkage mechanism, comprising a suspension, an injection needle, a lifting plate, a side plate, a limit groove and a pressing plate;

[0005] The suspension is laterally provided with a needle moving linear module, the moving end of the needle moving linear module is downwardly provided with the injection needle, and the injection needle is connected to a liquid medicine source;

[0006] The suspension is provided with a needle-piercing linear module downward, and the output end of the needle-piercing linear module is laterally provided with the lifting plate, and the two ends of the lifting plate are respectively provided with side plates downward, and the inner sides of the lower ends of the side plates are respectively provided with limiting grooves, and the upper ends of the limiting grooves are open, and the side plates are respectively provided with pressing plates above the limiting grooves, and the pressing plates are laterally slidably matched with the side plates, and the pressing plates are driven away from and close to the upper parts of the limiting grooves through a linkage device, and the solvent infusion bag group includes a plurality of solvent infusion bags and a connecting plate, and the infusion port of each of the solvent infusion bags is fixed to the connecting plate, and the two ends of the connecting plate are clamped in the limiting grooves.

[0007] Before use, the pressing plate is in a state away from the upper part of the limiting groove. At this time, the two ends of the connecting plate can be buckled in the limiting grooves respectively, and then the injection needle is driven to the corresponding infusion port by the needle moving linear module, and then the lifting plate is driven upward by the needle piercing linear module to move the infusion port toward the injection needle, so as to achieve the effect of piercing the needle into the corresponding solvent container, and then inject the liquid medicine into it. During the upward movement of the lifting plate, the pressing plate always presses the two ends of the solvent infusion bag set under the drive of the linkage device to keep the stability of the solvent infusion bag set. After the injection is completed, the first lifting module moves downward to drive the solvent infusion bag group downward. Before the injection needle is separated from the solvent infusion bag group, the pressure plate is always located above the limiting groove. After the injection needle is completely separated from the solvent container, the pressure plate is moved out from above the limiting groove through the linkage device, and the injection needle is moved to another injection position of the solvent container through the needle moving linear module to continue the injection. After all the injections are completed, the solvent infusion bag group is moved to the temporary storage rack. At this time, the lifting plate continues to be moved downward, and the limiting groove will be separated from the solvent infusion bag group.

[0008] Preferably, the linkage device comprises a connecting rod, a first synchronous frame, a second synchronous frame and a power member;

[0009] The middle part of the connecting rod is hinged to the side plate, and the two ends of the connecting rod are respectively provided with a first strip-shaped hole and a second strip-shaped hole;

[0010] The pressure plate includes a first pressure plate and a second pressure plate, and the first pressure plate and the second pressure plate are arranged above the limiting grooves on both sides corresponding to each other, the first pressure plate is fixed to the first synchronization frame, and the first synchronization frame is provided with a first hanging pin passing through the first strip-shaped hole, the second pressure plate is fixed to the second synchronization frame, and the second synchronization frame is provided with a second hanging pin passing through the second strip-shaped hole, and the connecting rod is driven to swing through the power member.

[0011] Since the two ends of the connecting rod are respectively connected to the first synchronous frame and the second synchronous frame, when the connecting rod swings, the first synchronous frame and the second synchronous frame will move inward or outward at the same time, that is, the first pressure plate and the second pressure plate will move synchronously to the top of the limit slot or away from the top of the limit slot to achieve the effect of synchronously limiting the upper position of the limit slot.

[0012] Preferably, the power member includes a return spring and a guide plate, the return spring is arranged between the first synchronous frame and the side plate, the return spring pushes the first synchronous frame to make the first pressure plate away from the top of the corresponding limit groove, the guide plate is arranged on the suspension, the guide plate is located on one side of the lifting plate, the guide plate is provided with a guide edge, the guide edge includes a lower oblique edge and an upper vertical edge, the lower end of the oblique edge is arranged away from the side of the lifting plate, and the first synchronous frame is provided with a contact member corresponding to the guide edge.

[0013] The guide plate is located on one side of the lifting plate and can directly contact the first synchronous frame.

[0014] Under the action of the reset spring, the first and second pressure plates are separated from the position of the limit slot, that is, if the guide plate does not apply force to the first synchronous frame, the reset spring will drive the first and second pressure plates to separate and move away from the limit slot. Due to the existence of the guide edge, after the lifting plate rises upward, the guide edge contacts the contact piece, and the oblique edge of the guide edge will continue to squeeze the contact piece, that is, the first synchronous frame will squeeze the reset spring until the contact piece contacts the vertical edge of the guide edge. The first synchronous frame maintains the state of squeezing the reset spring. During the process of the injection needle being inserted into the solvent container, the contact piece always contacts the vertical edge to ensure that when the needle is pulled out, the pressure plate can maintain the function of limiting the upper part of the limit slot.

[0015] Preferably, the contact member is a rotating wheel, which can reduce the friction with the guide plate and facilitate the lifting plate to move up and down more easily.

[0016] Preferably, the second synchronous frame includes a long rod and a side frame, the long rod is slidably matched with the lifting plate, the two ends of the long rod extend to the two sides of the lifting plate, one end of the long rod is provided with the second hanging pin, and the other end of the long rod is fixed to the second pressing plate through the side frame. The guide plate is relatively farther from the second synchronous frame, so the long rod and the side frame can be used to synchronously drive the side clamp on the other side when pushing the first synchronous frame.

[0017] Preferably, the lifting plate is provided with a synchronous frame interval limiting structure to limit the interval in which the second synchronous frame moves.

[0018] Preferably, the interval limiting structure includes a protruding block and a strip-shaped notch provided on the long rod, the protruding block is provided on the lifting plate, the protruding block is adapted to the strip-shaped notch, and during the sliding process of the long rod, the protruding block slides relatively in the strip-shaped notch. The moving distance of the protruding block in the strip-shaped notch is the moving distance of the long rod.

[0019] Preferably, the first synchronous frame is provided with a first guide rod, which is slidably matched with the side plate, and the second synchronous frame is provided with a second guide rod, which is slidably matched with the side plate, so as to facilitate a more stable movement of the first synchronous frame and the second synchronous frame, that is, the first pressure plate and the second pressure plate can move synchronously and smoothly together.

[0020] Preferably, the needle moving linear module includes a needle moving guide rail, a needle moving screw and a needle moving block, the needle moving guide rail and the needle moving screw are arranged parallel to each other on the suspension, the needle moving screw is driven by a motor, the needle moving block is slidably matched with the needle moving guide rail, the needle moving block is threadedly matched with the needle moving screw, and the injection needle is fixed to the needle moving block. The motor drives the screw to rotate, which can drive the moving block to slide on the guide rail, and the control is more precise.

[0021] Preferably, the lifting plate is vertically provided with a third guide rod, and the suspension is provided with a sliding sleeve slidably matched with the third guide rod, so as to improve the up and down stability of the lifting plate.

[0022] Beneficial effects of the utility model:

[0023] The above scheme can well achieve the purpose of injecting liquid medicine into the solvent infusion bag group. The whole process operation flow, in which the linkage device for controlling the pressure plate does not require other independent power, utilizes the process of lifting the lifting plate up and down to realize the driving of the sliding of the pressure plate. The design is very clever, and multiple solvent infusion bags can be injected at one time, and the injection efficiency is very high. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only five of the drawings of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 A perspective view of the front side of an embodiment of the utility model;

[0026] Figure 2 A perspective view of the rear side of an embodiment of the utility model;

[0027] Figure 3 A perspective view of the front side of the lifting plate and the linkage device of an embodiment of the utility model;

[0028] Figure 4 A perspective view of the rear side of the lifting plate and the linkage device of an embodiment of the utility model;

[0029] Figure 5 A three-dimensional view of the rear side of the lifting plate and the linkage device of an embodiment of the utility model (without the guide plate);

[0030] Among them, 1. suspension; 2. injection needle; 3. lifting plate; 4. side plate; 5. limiting groove; 601. first pressure plate; 602. second pressure plate; 7. solvent infusion bag group; 8. needle moving linear module; 801. guide rail; 802. screw rod; 803. moving block; 9. needle pricking linear module; 1001. connecting rod; 1002. first synchronous frame; 1003. second synchronous frame; 10031. long rod; 10032. side frame; 1004. power part; 10041. reset spring; 10042. guide plate; 1101. first hanging pin; 1102. second hanging pin; 12. contact part; 13. interval limiting structure; 1301. protruding block; 1302. strip notch; 1401. first guide rod; 1402. second guide rod; 15. third guide rod; 16. sliding sleeve. DETAILED DESCRIPTION

[0031] In order to deepen the understanding of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. The embodiments are only used to explain the present invention and do not limit the protection scope of the present invention.

[0032] Example

[0033] like Figure 1 As shown, a solvent injection limit linkage mechanism includes a suspension 1, an injection needle 2, a lifting plate 3, a side plate 4, a limit groove 5 and a pressure plate; the suspension 1 is laterally provided with a needle moving linear module 8, and the movable end of the needle moving linear module 8 is downwardly provided with the injection needle 2, and the injection needle 2 is connected to a liquid medicine source; the suspension 1 is downwardly provided with a needle insertion linear module 9, and the output end of the needle insertion linear module 9 is laterally provided with the lifting plate 3, and the two ends of the lifting plate 3 are downwardly provided with the side plates 4 respectively, and the lower end of the side plate 4 Limiting grooves 5 are respectively arranged on the inner side, and the upper ends of the limiting grooves 5 are open. The side panels 4 are respectively provided with pressure plates above the limiting grooves 5. The pressure plates slide laterally relative to the side panels 4. The pressure plates are driven to move away from and closer to the upper parts of the limiting grooves 5 through a linkage device. The solvent infusion bag group 7 includes a plurality of solvent infusion bags and connecting plates. The infusion ports of each of the solvent infusion bags are fixed to the connecting plates, and the two ends of the connecting plates are clamped in the limiting grooves 5 to realize synchronous movement of all the solvent infusion bags by means of a transfer connecting plate.

[0034] Before use, the pressing plate is in a state away from the upper part of the limiting groove 5. At this time, the two ends of the solvent infusion bag set 7 can be buckled in the limiting groove 5 respectively, and then the injection needle 2 is driven to move to the corresponding infusion port by the needle moving linear module 8, and then the needle piercing linear module 9 is used to drive the lifting plate 3 upward so that the infusion port is moved toward the injection needle 2, so as to achieve the effect of piercing the injection needle 2 into the corresponding solvent container, and then inject the liquid medicine into it. During the upward movement of the lifting plate 3, the pressing plate always presses the two ends of the solvent infusion bag set 7 driven by the linkage device to keep the solvent infusion bag set 7 Stable. After the injection is completed, the first lifting module moves downward to drive the solvent infusion bag group 7 downward. Before the injection needle 2 is separated from the solvent infusion bag group 7, the pressure plate is always located above the limiting groove 5. After the injection needle 2 is completely separated from the solvent container, the pressure plate is moved out from above the limiting groove 5 through the linkage device, and the injection needle 2 is moved to another injection position of the solvent container through the needle moving linear module 8, and the injection is continued. After all the injections are completed, the solvent infusion bag group 7 is moved to the temporary storage rack. At this time, the lifting plate 3 continues to be moved downward, and the limiting groove 5 will be separated from the solvent infusion bag group 7.

[0035] The linkage device includes a connecting rod 1001, a first synchronous frame 1002, a second synchronous frame 1003 and a power member 1004;

[0036] The middle part of the connecting rod 1001 is hinged to the side plate 4, and the two ends of the connecting rod 1001 are respectively provided with a first strip-shaped hole and a second strip-shaped hole;

[0037] The pressure plate includes a first pressure plate 601 and a second pressure plate 602, and the first pressure plate 601 and the second pressure plate 602 are arranged above the limiting grooves 5 on both sides. The first pressure plate 601 is fixed to the first synchronization frame 1002, and the first synchronization frame 1002 is provided with a first hanging pin 1101 penetrating the first strip-shaped hole. The second pressure plate 602 is fixed to the second synchronization frame 1003, and the second synchronization frame 1003 is provided with a second hanging pin 1102 penetrating the second strip-shaped hole. The connecting rod 1001 is driven to swing through the power member 1004.

[0038] Since the two ends of the connecting rod 1001 are respectively connected to the first synchronous frame 1002 and the second synchronous frame 1003, when the connecting rod 1001 swings, the first synchronous frame 1002 and the second synchronous frame 1003 will move inward or outward at the same time, that is, the first pressure plate 601 and the second pressure plate 602 will move synchronously to the top of the limit slot 5 or away from the top of the limit slot 5, so as to achieve the effect of synchronously limiting the upper position of the limit slot 5.

[0039] The power member 1004 includes a reset spring 10041 and a guide plate 10042, the reset spring 10041 is arranged between the first synchronous frame 1002 and the side plate 4, the reset spring 10041 pushes the first synchronous frame 1002 to make the first pressure plate 601 away from the top of the corresponding limit groove 5, the guide plate 10042 is arranged on the suspension 1, the guide plate 10042 is located on one side of the lifting plate 3, the guide plate 10042 is provided with a guide edge, the guide edge includes a lower oblique edge and an upper vertical edge, the lower end of the oblique edge is arranged away from the side of the lifting plate 3, and the first synchronous frame 1002 is provided with a contact member 12 corresponding to the guide edge.

[0040] The guide plate 10042 is located at one side of the lifting plate 3 and can directly contact the first synchronous frame 1002 .

[0041] Under the action of the reset spring 10041, the first pressing plate 601 and the second pressing plate 602 are separated from the position of the limiting groove 5, that is, if the guide plate 10042 does not apply force to the first synchronous frame 1002, the reset spring 10041 will drive the first pressing plate 601 and the second pressing plate 602 to separate and away from the limiting groove 5. Due to the existence of the guide edge, after the lifting plate 3 rises upward, the guide edge contacts the contact member 12, and the oblique edge of the guide edge will continue to squeeze the contact member 12, that is, the first synchronous frame 1002 will squeeze the reset spring 10041 until the contact member 12 contacts the vertical edge of the guide edge. The first synchronous frame 1002 keeps squeezing the reset spring 10041. When the injection needle 2 is inserted into the solvent container, the contact member 12 always contacts the vertical edge to ensure that when the needle is pulled out, the pressing plate can keep the limit function on the upper side of the limiting groove 5.

[0042] The contact member 12 is a rotating wheel, which can reduce the friction with the guide plate 10042, so that the lifting plate 3 can move up and down more easily.

[0043] Combination Figure 3 , 4 As shown in Figure 5, the second synchronous frame 1003 includes a long rod 10031 and a side frame 10032, the long rod 10031 is slidably matched with the lifting plate 3, the two ends of the long rod 10031 extend to the two sides of the lifting plate 3, one end of the long rod 10031 is provided with the second hanging pin 1102, and the other end of the long rod 10031 is fixed to the second pressing plate 602 through the side frame 10032. The guide plate 10042 is relatively farther from the second synchronous frame 1003, so the long rod 10031 and the side frame 10032 can be used to synchronously drive the side clamp on the other side when the first synchronous frame 1002 is pushed.

[0044] Combination Figure 4 and Figure 5As shown, the lifting plate 3 is provided with a synchronous frame interval limiting structure 13 to limit the moving interval of the second synchronous frame 1003.

[0045] The interval limiting structure 13 includes a protruding block 1301 and a strip-shaped notch 1302 provided on the long rod 10031. The protruding block 1301 is provided on the lifting plate 3. The protruding block 1301 is adapted to the strip-shaped notch 1302. During the sliding process of the long rod 10031, the protruding block 1301 slides relatively in the strip-shaped notch 1302. The moving distance of the protruding block 1301 in the strip-shaped notch 1302 is the moving distance of the long rod 10031.

[0046] The first synchronous frame 1002 is provided with a first guide rod 1401, which is slidably matched with the side plate 4, and the second synchronous frame 1003 is provided with a second guide rod 1402, which is slidably matched with the side plate 4. This facilitates the first synchronous frame 1002 and the second synchronous frame 1003 to move more smoothly, that is, the first pressing plate 601 and the second pressing plate 602 can move synchronously and smoothly together.

[0047] The needle moving linear module 8 includes a needle moving guide rail 801, a needle moving screw rod 802 and a needle moving block 803. The needle moving guide rail 801 and the needle moving screw rod 802 are arranged parallel to each other on the suspension 1. The needle moving screw rod 802 is driven by a motor. The needle moving block 803 is slidably matched with the needle moving guide rail 801. The needle moving block 803 is threadedly matched with the needle moving screw rod 802. The injection needle 2 is fixed to the needle moving block 803. The motor drives the screw rod 802 to rotate, which can drive the moving block 803 to slide on the guide rail 801, and the control is more precise.

[0048] Combination Figure 2 As shown, the needle-piercing linear module 9 is a linear motor, the lifting plate 3 is vertically provided with a third guide rod 15, and the suspension 1 is provided with a sliding sleeve 16 slidably adapted to the third guide rod 15, so as to improve the up and down stability of the lifting plate 3.

[0049] Beneficial effects of the utility model:

[0050] The above scheme can well achieve the purpose of injecting the solvent infusion bag group 7. The whole process operation flow, in which the linkage device for controlling the pressure plate does not require other independent power, utilizes the process of lifting and lowering the lifting plate 3 to realize the driving of the pressure plate to slide, and the design is very clever.

[0051] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0052] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A solvent needle-puncture limit linkage mechanism, characterized in that: It comprises a suspension frame (1), an injection needle (2), a lifting plate (3), a side plate (4), a limiting groove (5), a pressing plate and a solvent infusion bag set (7); The suspension (1) is laterally provided with a needle moving linear module (8), the movable end of the needle moving linear module (8) is provided with the injection needle (2) downwardly, and the injection needle (2) is connected to a liquid medicine source; The suspension (1) is provided with a needle-piercing linear module (9) downwardly, and the output end of the needle-piercing linear module (9) is provided with the lifting plate (3) transversely, and the two ends of the lifting plate (3) are provided with the side plates (4) downwardly, and the inner sides of the lower ends of the side plates (4) are provided with limiting grooves (5), and the upper ends of the limiting grooves (5) are open, and the side plates (4) are provided with the pressing plates above the limiting grooves (5), and the pressing plates are slidably matched with the side plates (4) transversely, and the pressing plates are driven to move away from and close to the upper side of the limiting grooves (5) through a linkage device; The solvent infusion bag group (7) comprises a plurality of solvent infusion bags and a connecting plate, the infusion port of each solvent infusion bag is fixed to the connecting plate, and the two ends of the connecting plate are clamped in the limiting groove (5).

2. A solvent needle-limiting linkage mechanism according to claim 1, characterized in that: The linkage device comprises a connecting rod (1001), a first synchronous frame (1002), a second synchronous frame (1003) and a power member (1004); The middle portion of the connecting rod (1001) is hinged to the side plate (4), and both ends of the connecting rod (1001) are respectively provided with a first strip-shaped hole and a second strip-shaped hole; The pressure plate includes a first pressure plate (601) and a second pressure plate (602), the first pressure plate (601) and the second pressure plate (602) are arranged above the limiting grooves (5) on the corresponding two sides, the first pressure plate (601) is fixed to the first synchronization frame (1002), the first synchronization frame (1002) is provided with a first hanging pin (1101) penetrating the first strip-shaped hole, the second pressure plate (602) is fixed to the second synchronization frame (1003), the second synchronization frame (1003) is provided with a second hanging pin (1102) penetrating the second strip-shaped hole, and the connecting rod (1001) is driven to swing through the power member (1004).

3. A solvent needle-limiting linkage mechanism according to claim 2, characterized in that: The power member (1004) comprises a return spring (10041) and a guide plate (10042), wherein the return spring (10041) is arranged between the first synchronous frame (1002) and the side plate (4), wherein the return spring (10041) pushes the first synchronous frame (1002) to make the first pressure plate (601) away from the top of the corresponding limit groove (5), wherein the guide plate (10042) is arranged on the suspension frame (1), wherein the guide plate (10042) is located on one side of the lifting plate (3), wherein the guide plate (10042) is provided with a guide edge, wherein the guide edge comprises a lower oblique edge and an upper vertical edge, wherein the lower end of the oblique edge is arranged away from the side of the lifting plate (3), and the first synchronous frame (1002) is provided with a contact member (12) corresponding to the guide edge.

4. A solvent needle-limiting linkage mechanism according to claim 3, characterized in that: The contact member (12) is a rotating wheel.

5. A solvent needle-puncture limiting linkage mechanism according to claim 3, characterized in that: The second synchronous frame (1003) comprises a long rod (10031) and a side frame (10032); the long rod (10031) is slidably matched with the lifting plate (3); both ends of the long rod (10031) extend to both sides of the lifting plate (3); one end of the long rod (10031) is provided with the second hanging pin (1102); the other end of the long rod (10031) is fixed to the second pressing plate (602) through the side frame (10032).

6. A solvent needle-limiting linkage mechanism according to claim 5, characterized in that: The lifting plate (3) is provided with a synchronous frame interval limiting structure (13).

7. A solvent needle-puncture limiting linkage mechanism according to claim 6, characterized in that: The interval limiting structure (13) comprises a protruding block (1301) and a strip-shaped notch (1302) arranged on the long rod (10031); the protruding block (1301) is arranged on the lifting plate (3); the protruding block (1301) is adapted to the strip-shaped notch (1302); and when the long rod (10031) slides, the protruding block (1301) slides relatively in the strip-shaped notch (1302).

8. A solvent needle-puncture limiting linkage mechanism according to claim 3, characterized in that: The first synchronous frame (1002) is provided with a first guide rod (1401), and the first guide rod (1401) is slidably matched with the side plate (4); the second synchronous frame (1003) is provided with a second guide rod (1402), and the second guide rod (1402) is slidably matched with the side plate (4).

9. A solvent needle-puncture limiting linkage mechanism according to claim 1, characterized in that: The needle moving linear module (8) comprises a needle moving guide rail (801), a needle moving screw rod (802) and a needle moving block (803); the needle moving guide rail (801) and the needle moving screw rod (802) are arranged parallel to each other on the suspension (1); the needle moving screw rod (802) is driven by a motor; the needle moving block (803) is slidably matched with the needle moving guide rail (801); the needle moving block (803) is threadedly matched with the needle moving screw rod (802); and the injection needle (2) is fixed to the needle moving block (803).

10. A solvent needle-puncture limiting linkage mechanism according to claim 1, characterized in that: The lifting plate (3) is vertically provided with a third guide rod (15), and the suspension (1) is provided with a sliding sleeve (16) slidably matched with the third guide rod (15).

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