CN113928791B

CN113928791B - Empty bag draining device for plasma bag breaking machine

Info

Publication number: CN113928791B
Application number: CN202111165655.0A
Authority: CN
Inventors: 廖晓飞; 周光荣; 李新华; 陈武; 刘清军; 张香华; 赵国强; 陈立; 朱少乐; 刘冬青; 曹国田; 曾伟
Original assignee: Hengyang Xinshan Mechanical Device Manufacture Co ltd
Current assignee: Hengyang Xinshan Mechanical Device Manufacture Co ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2023-07-25
Anticipated expiration: 2041-09-30
Also published as: CN113928791A

Abstract

The invention relates to the technical field of plasma bag breaking, in particular to an empty bag draining device for a plasma bag breaking machine, which aims to solve the problem that plasma is wasted due to the fact that plasma bags and plasma are collected into a tray after being separated by an existing automatic blood and bag separator so that residual part of the plasma in the plasma bags is melted. For this purpose, the empty bag drain of the present invention comprises a rack, an endless conveyor arranged on the rack for driving the pins to circulate on the first and second sides of the rack, and a plurality of substantially horizontally extending pins on the first and second sides of the rack, such that empty plasma bags are hooked to the pins on the first side of the rack and removed after movement to the second side of the rack. The hanging needle of the plasma bag is enabled to be hung on the first side of the bracket to be moved to the second side, and the hanging needle on the second side of the bracket is enabled to be moved to the first side so as to continuously hook the empty plasma bag, so that the empty plasma bag is continuously hooked to drain residual plasma.

Description

Empty bag draining device for plasma bag breaking machine

Technical Field

The invention relates to the technical field of plasma bag breaking, and particularly provides an empty bag draining device for a plasma bag breaking machine.

Background

The blood product mainly refers to bioactive preparation prepared from blood plasma of healthy people or specific immune blood plasma by adopting a separation and purification technology, such as human albumin, human immunoglobulin, small products and the like, and is used for diagnosis, treatment or passive immune prevention. The blood plasma collected from a healthy person is contained in a standard blood plasma bag and frozen into ice for storage, and the blood plasma bag which is cleaned and sterilized before the blood product is produced is required to be broken so that the blood plasma of the ice is taken out and put into a melting tank for melting.

Patent (CN 207902883U) discloses an automatic blood and bag separator, which comprises a workbench, wherein a transmission mechanism and a machine case are arranged above the workbench, a feed inlet, a transmission roller mechanism, a squeeze roller and a blood bag discharge port are sequentially arranged in the machine case along the transmission direction, a bag breaking knife is arranged below the transmission roller mechanism, the tail end of the transmission mechanism is connected with the feed inlet, and a tray is arranged at the blood bag discharge port. The bottom side of the case is provided with a plasma discharge port, and a packing auger is arranged in the plasma discharge port and used for conveying plasma from the bottom of the case into the slurry tank. In operation, the plasma bag is transported from the front end to the tail end of the transmission mechanism, enters the working box from the feed inlet and is clamped by the conveying roller mechanism. The plasma bag is broken by the bag breaking knife positioned below the conveying roller mechanism in the process of being clamped by the conveying roller mechanism and moving forwards, then the plasma bag continues to move forwards to the squeeze roller, the squeeze roller squeezes the plasma bag while continuing to convey the plasma bag forwards, plasma in the plasma bag is squeezed out, the squeezed plasma drops downwards to a plasma discharge port, then the plasma is conveyed to a plasma melting tank by an auger for further treatment, and the empty plasma bag is conveyed into a tray for collection through the plasma bag discharge port.

Because the empty plasma bag is conveyed into the tray for collection through the plasma bag discharge port, a part of melted plasma possibly remains in the empty plasma bag, and the waste of the plasma is caused.

Accordingly, there is a need in the art for a new solution to the above-mentioned problems.

Disclosure of Invention

The invention aims to solve the technical problems, namely, the problems that the plasma bag and the plasma are separated by the existing automatic blood and bag separator and the separated plasma bag is collected into a tray, so that the residual part of the melted plasma in the plasma bag causes the waste of the plasma. The invention provides an empty bag draining device for a plasma bag breaking machine, which comprises a bracket, an annular conveying mechanism arranged on the bracket and a plurality of hanging needles which are arranged on a first side and a second side of the bracket and extend approximately horizontally, wherein the annular conveying mechanism is used for driving the hanging needles to circularly move on the first side and the second side of the bracket, so that an empty plasma bag is hooked on the hanging needles on the first side of the bracket and removed after moving to the second side of the bracket.

In the preferable technical scheme of the empty bag draining device, the annular conveying mechanism comprises an annular track arranged on the support, a plurality of moving members matched with the annular track and a first driving mechanism for driving the moving members to move relative to the annular track, and the hanging needle is fixedly connected with the moving members.

In the preferable technical scheme of the empty bag draining device, at least one pair of rollers are arranged on each moving member, and each pair of rollers is arranged on two sides of the annular track in a crossing mode.

In a preferred embodiment of the above-described empty bag drain, the first driving mechanism includes two driving wheels provided on the frame and an endless belt or an endless chain supported on the two driving wheels, and the moving member is connected to the endless belt or the endless chain.

In the preferable technical scheme of the empty bag draining device, the empty bag draining device further comprises a bag withdrawing mechanism, and the bag withdrawing mechanism is used for taking down the empty bag on the hanging needle positioned on the second side of the support.

In the preferred technical scheme of the empty bag draining device, the bag withdrawing mechanism is arranged on the support, and the bag withdrawing mechanism can remove the empty bags on the hanging needles positioned on the second side of the support at a time.

In the above preferred technical solution of the empty bag draining device, the bag returning mechanism includes a bag returning plate and a second driving mechanism connected with the bracket and the bag returning plate, the bag returning plate extends upwards from the lower edge to form grooves with the same number as the hanging pins positioned on the second side of the bracket, and each groove moves from an initial position positioned above the corresponding hanging pin to a position straddling the corresponding hanging pin and pushes the empty bag to move along the axial direction of the hanging pin in the process of driving the bag returning plate by the second driving mechanism.

In a preferred embodiment of the above empty bag draining device, the second driving mechanism includes: a slideway arranged on the bracket and parallel to the axial direction of the hanging needle at the second side of the bracket; the sliding block is in sliding connection with the slideway; the first end of the first connecting rod is pivotally connected with the sliding block, the pivot shafts of the first connecting rod and the sliding block are perpendicular to the slideway, and the second end of the first connecting rod is fixedly connected with the bag withdrawing plate; a linear driving device fixed to the bracket; the first end of the second connecting rod is pivotally connected with the telescopic member of the linear driving device, and the second end of the second connecting rod is pivotally connected with the first connecting rod, so that acting force of the second connecting rod on the first connecting rod during the process that the telescopic member of the linear driving device moves along two different directions respectively generates forward torque and reverse torque around the rotating shaft of the first connecting rod.

In the above preferred technical scheme of the empty bag draining device, the first connecting rod comprises a first rod section and a second rod section, the first end of the first rod section is pivotally connected with the slider, the first end and the second end of the second rod section are respectively fixedly connected with the second end of the first rod section and the bag withdrawing plate, and the second end of the connecting rod is pivotally connected with the second end of the first rod section.

In the preferable technical scheme of the empty bag draining device, a proximity switch is further arranged on the support, the proximity switch is triggered when the sliding block moves to one end of the sliding way far away from the bag withdrawing plate and the first connecting rod rotates around the rotating shaft forwards by a set angle, and the linear driving device stops acting based on a trigger signal of the proximity switch so that the bag withdrawing plate is kept at the initial position.

Under the condition that the technical scheme is adopted, the plasma bag can be firstly hooked on the hanging needle on the first side of the support, when the hanging needle on the first side of the support is fully hooked on the plasma bag, the annular conveying mechanism drives the hanging needle to circularly move on the first side and the second side of the support, so that the hanging needle on the first side of the support fully hooked on the plasma bag moves to the second side of the support, and the hanging needle on the second side of the support moves to the first side of the support so as to continuously hook the empty plasma bag, and the empty plasma bag is continuously hooked to drain residual plasma.

Drawings

Preferred embodiments of the present invention are described below with reference to the accompanying drawings and a hammer plasma bag breaker, wherein:

FIG. 1 is a block diagram of a hammer plasma bag breaker according to one embodiment of the invention;

FIG. 2 is a front view of a hammer plasma bag breaker according to one embodiment of the invention;

FIG. 3 is a left side view of a hammer plasma bag breaker according to one embodiment of the present invention;

FIG. 4 is a diagram showing the positional relationship among a bag scoring device, a hammer type separating device, an empty bag transferring device, and an empty bag draining device in a hammer type plasma bag breaker according to an embodiment of the present invention;

FIG. 5 is a block diagram of a bag scoring device in a hammer plasma bag breaker according to one embodiment of the invention;

FIG. 6 is an enlarged view of portion A of FIG. 5;

FIG. 7 is an enlarged view of part B of FIG. 5;

FIG. 8 is a block diagram of a hammer type separation device in a hammer type plasma bag breaker according to an embodiment of the present invention;

FIG. 9 is a block diagram of a first securing mechanism of a hammer separation device in a hammer plasma bag breaker according to one embodiment of the present invention;

FIG. 10 is an enlarged view of part C of FIG. 9;

FIG. 11 is a block diagram of a second securing mechanism of a hammer type separation device in a hammer type plasma bag breaker according to one embodiment of the present invention;

FIG. 12 is a block diagram of a hammer mechanism of a hammer separation device in a hammer plasma bag breaker according to one embodiment of the present invention;

FIG. 13 is a block diagram of a hollow bag transfer device of a hammer plasma bag breaker in accordance with one embodiment of the present invention;

FIG. 14 is a block diagram of a hollow bag drain apparatus (from a top-down oblique view) of a hammer plasma bag breaker according to one embodiment of the present invention;

FIG. 15 is a second block diagram (from a bottom-up oblique view) of a hollow bag drain apparatus of a hammer plasma bag breaker in accordance with one embodiment of the present invention;

FIG. 16 is an enlarged view of portion D of FIG. 15;

FIG. 17 is a third block diagram of a hollow bag drain apparatus (from a top-down perspective and showing internal structure) of a hammer plasma bag breaker in accordance with one embodiment of the present invention;

fig. 18 is an enlarged view of a portion E in fig. 17.

List of reference numerals:

1. a housing; 11. plasma bag positioning tool; 12. a plasma tank; 13. an auger; 14. a discharge pipe; 15. a bag receiving platform; 2. a bag cutting device; 21. a first clamping mechanism; 211. a mounting frame a; 212. a connecting arm a; 213. a connecting frame a; 214. a claw mechanism a; 215. a connecting arm lever a; 216. a connecting rod a; 217. a rocker a; 218. a connecting rod a; 219. a servo motor a; 22. a second clamping mechanism; 221. a mounting frame b; 222. a sliding block a; 223. a connecting frame b; 224. a claw mechanism b; 23. a first cutter; 231. a first tool post; 232. a first chute; 233. a sliding block b; 234. a first blade; 235. a first spring; 24. a second cutter; 241. a second tool post; 242. a second chute; 243. a slide block c; 244. a second blade; 245. a second spring; 3. hammering type separating device; 31. a first fixing mechanism; 311. a mounting member b; 312. a claw mechanism c; 3121. a first claw; 3122. a connecting rod a; 3123. a cylinder a; 313. a shearing mechanism; 3131. swing rod; 31311. a shear blade; 3132. a connecting rod b; 3133. a cylinder b; 314. a pivot shaft; 315. a servo motor c; 32. a second fixing mechanism; 321. a mounting member c; 322. a claw mechanism d; 33. a hammering mechanism; 331. a mounting member a; 332. a cylinder c; 333. a connecting rod c; 334. a hammer head; 335. a fast-assembling clamp; 4. an empty bag transfer device; 411. a mounting frame c; 412. a first rotating shaft; 413. a second rotating shaft; 414. a connecting arm b; 415. a connecting arm b; 416. a connecting rod d; 417. a rocker b; 418. a connecting rod b; 419. a servo motor d; 42. a connecting frame c; 43. a driving mechanism a; 431. a cylinder d; 432. a telescopic rod; 433. a crank; 5. an empty bag draining device; 51. a bracket; 52. a mounting frame d; 531. an annular slide rail; 532. a moving member; 5321. a roller; 5331. a drive sprocket; 5332. a driven sprocket; 5333. an endless chain; 534. hanging a needle; 541. a bag removing plate; 5411. a groove; 542. a driving mechanism b; 5421. a linear slide rail; 5422. a sliding block d; 5423. a connecting rod e; 54231. a first pole segment; 54232. a second pole segment; 5424. a cylinder e; 5425. a connecting rod f; 5426. a proximity switch; 6. a control unit; 7. positioning tooling for plasma bags of cleaning machines; 8. a plasma bag.

Detailed Description

First, it should be understood by those skilled in the art that the embodiments described below are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention.

It should be noted that, in the description of the present invention, terms such as "upper," "lower," "left," "right," "inner," "outer," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the term "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected, can be indirectly connected through an intermediate medium, and can also be communicated with the inside of two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.

The hammer type plasma bag breaker will be described in detail with reference to fig. 1 to 18. Wherein, FIG. 1 is a block diagram of a hammer type plasma bag breaker according to an embodiment of the invention; FIG. 2 is a front view of a hammer plasma bag breaker according to one embodiment of the invention; FIG. 3 is a left side view of a hammer plasma bag breaker according to one embodiment of the present invention; FIG. 4 is a diagram showing the positional relationship among a bag scoring device, a hammer type separating device, an empty bag transferring device, and an empty bag draining device in a hammer type plasma bag breaker according to an embodiment of the present invention; FIG. 5 is a block diagram of a bag scoring device in a hammer plasma bag breaker according to one embodiment of the invention; FIG. 6 is an enlarged view of portion A of FIG. 5; FIG. 7 is an enlarged view of part B of FIG. 5; FIG. 8 is a block diagram of a hammer type separation device in a hammer type plasma bag breaker according to an embodiment of the present invention; FIG. 9 is a block diagram of a first securing mechanism of a hammer separation device in a hammer plasma bag breaker according to one embodiment of the present invention; FIG. 10 is an enlarged view of part C of FIG. 9; FIG. 11 is a block diagram of a second securing mechanism of a hammer type separation device in a hammer type plasma bag breaker according to one embodiment of the present invention; FIG. 12 is a block diagram of a hammer mechanism of a hammer separation device in a hammer plasma bag breaker according to one embodiment of the present invention; FIG. 13 is a block diagram of a hollow bag transfer device of a hammer plasma bag breaker in accordance with one embodiment of the present invention; FIG. 14 is a block diagram of a hollow bag drain apparatus (from a top-down oblique view) of a hammer plasma bag breaker according to one embodiment of the present invention; FIG. 15 is a second block diagram (from a bottom-up oblique view) of a hollow bag drain apparatus of a hammer plasma bag breaker in accordance with one embodiment of the present invention; FIG. 16 is an enlarged view of portion D of FIG. 15; FIG. 17 is a third block diagram of a hollow bag drain apparatus (from a top-down perspective and showing internal structure) of a hammer plasma bag breaker in accordance with one embodiment of the present invention; fig. 18 is an enlarged view of a portion E in fig. 17.

As shown in fig. 1 to 4 and referring to the orientation shown in fig. 2, the plasma bag breaker includes a housing 1 as a frame, a bag scoring device 2 provided to the housing 1, a hammer blow type separating device 3, an empty bag transferring device 4, and an empty bag draining device 5. The rear side of the shell 1 is provided with a cleaning machine plasma bag positioning tool 7, the shell 1 is internally provided with a plasma bag positioning tool 11 and a plasma tank 12 positioned below the bag scraping device 2, the hammering type separating device 3, the empty bag transferring device 4 and the empty bag draining device 5, the plasma tank 12 is internally provided with an auger 13, and the auger 13 is driven by a motor (not shown in the figure), so that plasma blocks in the plasma tank 12 are crushed and output to a slurry tank (not shown in the figure) from a discharge pipe 14 on the right side of the shell 1. A bag receiving platform 15 is arranged at the front side of the shell 1 corresponding to the empty bag draining device 5 and is used for receiving empty plasma bags 8 removed from the empty bag draining device 5. The shell 1 is also provided with a control part 6, and the control part 6 is used for controlling the operation of the bag drawing device 2, the hammering type separating device 3, the empty bag transferring device 4, the empty bag draining device 5 and the auger 13, and can interact with an operator so as to input an operation command and output an operation state.

As shown in fig. 4 to 7 and referring to fig. 1, the bag drawing device 2 includes a holding mechanism for moving the plasma bag 8 to the hammer type separating device 3, and a cutter disposed on a moving path of the plasma bag 8 so that a lower surface of the plasma bag 8 is opened by the cutter during the movement of the plasma bag 8. Specifically, the gripping mechanism includes a first gripping mechanism 21 and a second gripping mechanism 22, the moving path includes a first path and a second path, the cutter includes a first cutter 23 and a second cutter 24, and the first cutter 23 and the second cutter 24 are disposed on the first path and the second path, respectively. The first clamping mechanism 21 is used for moving the plasma bag 8 from the cleaning machine plasma bag positioning fixture 7 to the plasma bag positioning fixture 11, and the second clamping mechanism 22 is used for moving the plasma bag 8 from the plasma bag positioning fixture 11 to the hammer type separating device 3.

As shown in fig. 5, the first clamping mechanism 21 includes an articulated arm having a front end connected to the housing 1, a link frame a213 pivotally connected to a distal end of the articulated arm, and eight jaw mechanisms a214 provided on the link frame a213, the jaw mechanisms a214 being existing pneumatic fingers. The multi-joint mechanical arm comprises two mounting frames a211 fixed to the shell 1, two connecting arms a212 which are sequentially and pivotally connected, and two connecting arm driving parts (such as a servo motor a 219) which respectively drive the two connecting arms a212 to rotate, wherein the connecting frame a213 is pivotally connected with the tail end of the second connecting arm a212, two groups of connecting rods are respectively arranged on two sides of the multi-joint mechanical arm, each group of connecting rods comprises two connecting arm rods a215 and one connecting rod a216, one end of each connecting arm rod a215 is respectively and pivotally connected to a rotating shaft at two ends of each connecting arm a212, and two ends of each connecting rod a216 are respectively and pivotally connected to the other ends of the corresponding connecting arm a212, so that a parallelogram mechanism is formed.

As shown in fig. 5, a first rotation shaft and a second rotation shaft parallel to each other are provided between the two mounting frames a211, a proximal end of the first link arm a212 (i.e., one end near the mounting frame a211 in the direction of the transmission chain) is pivotally connected to the first rotation shaft on the mounting frame a211, both ends of the first link arm a216 are respectively pivotally connected to the second rotation shaft on the mounting frame a211 and the other end of the link arm a215 connected to the distal end of the first link arm a212, the link arm a215 connected to the proximal end of the first link arm a212 is a virtual link, and it is fixedly connected to the link arm a215 pivotally connected to the same rotation shaft while the position of the mounting frame a211 remains unchanged, so that the parallelogram mechanisms adjacent to each other are disposed in linkage so that the posture of the link arm a213 remains unchanged during the movement of the multi-joint mechanical arm. It should be noted that the arm rod a215 pivotally connected to the same shaft may be integrally formed.

By such arrangement, the plasma bag 8 can be kept in a stable posture during the movement of the first holding mechanism 21 holding the plasma bag 8, and the accuracy of the position of the notch formed in the lower surface of the plasma bag 8 can be ensured. It will be appreciated that the arm link a215 connected to the proximal end of the first arm a212 may also be a solid arm link with both ends pivotally connected to the first and second shafts, respectively; in addition, two groups of connecting rods can be arranged on one side of the multi-joint mechanical arm, but the stability is not as good as that of two groups of connecting rods arranged on two sides of the multi-joint mechanical arm.

As shown in fig. 5, two servo motors a219 are fixed to two mounting frames a211, respectively. The output shaft of one servo motor a219 is drivingly connected to the proximal end of the first connecting arm a212 by a coupling, and the other servo motor a219 is drivingly connected to the second connecting arm a212 by a linkage assembly. The link assembly includes a rocker a217 and a link a218, a first end of the rocker a217 is pivotally connected to the first shaft, an output shaft of the other servo motor a219 is drivingly connected to the first end of the rocker a217, a first end of the link a218 is pivotally connected to a second end of the rocker a217, a second end of the link a218 is pivotally connected to the second link arm a212, and a length between a position where the second end of the link a218 is connected to the second link arm a212 and a proximal end of the second link arm a212 is equal to a length of the rocker a 217.

By such an arrangement, the pivot angle of each of the connection arms a212 can be more conveniently controlled, and the movement of the first clamping mechanism 21 can be conveniently controlled. The two servo motors a219 are respectively fixed to the two mounting frames a211, so that inertia of the multi-joint mechanical arm in the moving process can be reduced, and the flexibility and the accuracy of the action of the first clamping mechanism 21 are further improved. It should be noted that, the length between the position where the second end of the connecting rod a218 is connected to the second connecting arm a212 and the proximal end of the second connecting arm a212 may be different from the length of the rocker a217, so that the angular relationship between the rotation angle of the connecting arm a212 and the corresponding rocker a217 needs to be obtained through experiments, and then the rocker a217 is rotated by a set angle through the servo motor a219 so that the connecting arm a212 is rotated by the corresponding angle.

As shown in fig. 5, the second clamping mechanism 22 includes a mounting bracket b221 fixed to the housing 1, a slider a222 slidably connected to the mounting bracket b221, a link bracket b223 fixedly connected to the slider a222, and eight claw mechanisms b224 provided on the link bracket b 223. The first cutter 23 is disposed on the left side of the plasma bag positioning jig 11, and the second cutter 24 is disposed on the rear side of the plasma bag positioning jig 11.

It should be noted that the specific structure of the first clamping mechanism 21 is only a preferable arrangement mode, and may be adjusted in practical applications, for example, the first clamping mechanism 21 may be a structure of the second clamping mechanism 22. The specific structure of the second clamping mechanism 22 is only one specific arrangement, and may be adjusted in practical applications, for example, the second clamping mechanism 22 may be configured as the first clamping mechanism 21. In addition, the number of the link arms in the articulated robot arm may be three, four or more, and the number of links and the number of the link assemblies of the corresponding group number are correspondingly set. In addition, the first clamping mechanism 21 and the second clamping mechanism 22 respectively include eight clamping jaw mechanisms, which are only one specific arrangement, and may be adjusted in practical applications, for example, the number of clamping jaw mechanisms in the first clamping mechanism 21 and the second clamping mechanism 22 may be one, three, six, ten or more, respectively, and the like.

As shown in fig. 5 and 6, the first cutter 23 includes a first cutter frame 231 and eight first blades 234, eight vertical first sliding grooves 232 are provided on the first cutter frame 231, a sliding block b233 is provided in each first sliding groove 232, the lower part of the sliding block b233 is connected with the lower part of the first sliding groove 232 through a first spring 235, and the upper part of each sliding block b233 is fixedly connected with one first blade 234. Wherein the first blade 234 is a ceramic blade.

As shown in fig. 5 and 7, the second cutter 24 includes a second cutter holder 241 and three second blades 244, three vertical second sliding grooves 242 are provided on the second cutter holder 241, a sliding block c243 is provided in each second sliding groove 242, the lower part of the sliding block c243 is connected with the lower part of the second sliding groove 242 through a second spring 245, and the upper part of each sliding block c243 is fixedly connected with one second blade 244. Wherein the second blade 244 is a ceramic blade.

During the process of moving the first clamping mechanism 21 to clamp the plasma bag 8 from the cleaning machine plasma bag positioning tool 7 to the plasma bag positioning tool 11, each first blade 234 forms a first notch along the length direction of the plasma bag 8 on the lower surface of one plasma bag 8. During the process of moving the second clamping mechanism 22 clamping the plasma bags 8 from the plasma bag positioning tool 11 to the hammer type separating device 3, three second blades 244 form three second cuts on the lower surface of each plasma bag 8 in the width direction of the plasma bag 8. One first cut and three second cuts on the lower surface of each plasma bag 8 form an opening in the shape of a "Feng".

Through connecting the blades with the knife rest through the spring, when the first clamping mechanism 21 and the second clamping mechanism 22 clamp the plasma bag 8 and move, the first blade 234 and the second blade 244 can retract downwards by a certain distance when contacting with the lower surface of the plasma bag 8, and the first blade 234 and the second blade 244 can always contact with the lower surface of the curved surface of the plasma bag 8 under the action of the first spring 235 and the second spring 245, so that a first incision and a second incision can be formed on the lower surface of the plasma bag 8 through the first blade 234 and the second blade 244 respectively, the situation that the blades are seriously worn due to the fact that the first blade 234 and the second blade 244 scratch into the plasma bag 8 at the position with the downward bulge of the lower surface of the plasma bag 8 is avoided, and the service life of the first blade 234 and the second blade 244 is prolonged. The first incision is perpendicular with the direction of second incision, can increase the size of opening, can make things convenient for the deviate from of plasma piece in the process.

It should be noted that the number of the second blades 244 may be one, two, three or more. The number of first blades 234 may be adjusted with the number of plasma bags 8 held on the first holding mechanism 21. The extending directions of the first incision and the second incision formed on the lower surface of each plasma bag 8 are perpendicular to each other, which is only a preferable arrangement mode, and can be adjusted in practical application, for example, the extending directions of the first incision and the second incision formed on the lower surface of each plasma bag 8 can form an acute angle, and the moving directions of the first clamping mechanism 21 and the second clamping mechanism 22 and the directions of the cutting edges of the first blade 234 and the second blade 244 can be adjusted adaptively. The first blade 234 and the second blade 244 are configured as ceramic blades, which can reduce the attachment time of plasma on the blades, facilitating the dripping of plasma adhered on the blades. The connection of the blade and the knife rest through the spring is only a specific setting mode, and in practical application, the blade and the knife rest can be connected through elastic components such as rubber blocks or silica gel blocks. In addition, the first blade 234 and the second blade 244 may be made of stainless steel or the like.

In another possible embodiment, the first blade 234 is pivotally coupled to the first blade holder 231, the first blade 234 is coupled to the first blade holder 231 by a torsion spring, and/or the second blade 244 is pivotally coupled to the second blade holder 241, and the second blade 244 is coupled to the second blade holder 241 by a torsion spring. In this way, it is also possible to avoid the occurrence of serious abrasion of the blades caused by the fact that the first blade 234 and/or the second blade 244 is scratched to a depth of the plasma bag 8 too deep at a portion where the lower surface of the plasma bag 8 protrudes downward.

In another possible embodiment, the first cutter comprises a first cutter frame and at least one first blade, at least one vertical first sliding groove is formed in the first cutter frame, a sliding block is arranged in each first sliding groove, the lower part of each sliding block is connected with the lower part of each first sliding groove through a first spring, and the upper part of each sliding block is fixedly connected with one first blade respectively. The second cutter comprises a second cutter rest and at least one second blade, at least one vertical second chute is arranged on the second cutter rest, a sliding block is arranged in each second chute, the lower part of each sliding block is connected with the lower part of each second chute through a second spring, and the upper part of each sliding block is fixedly connected with one second blade respectively. During the process of moving the plasma bag 8 clamped by the first clamping mechanism 21 from the cleaning machine plasma bag positioning tool 7 to the plasma bag positioning tool 11, all the first blades 234 form at least one first cut on the lower surface of one plasma bag 8 along the width direction of the plasma bag 8, respectively. During the process of moving the second clamping mechanism 22 to clamp the plasma bags 8 from the plasma bag positioning tool 11 to the hammer type separating device 3, each second blade 244 forms a second slit along the length direction of the plasma bag 8 on the lower surface of each plasma bag 8. The first and second cuts of the lower surface of each plasma bag form an opening.

In another possible embodiment, the bag scoring device 2 comprises only one gripping mechanism capable of gripping the plasma bag 8 first from the washer plasma bag positioning fixture 7 to the plasma bag positioning fixture 11 and then from the plasma bag positioning fixture 11 to the hammer blow type separating device 3. Alternatively, the clamping device may be movable along a circular path, and the first cutter 23 and the second cutter 24 may be arranged at two different positions of the circular path, respectively. The bag cutting device 2 may include only one cutter, and the cutter may form a first cut on the lower surface of the plasma bag 8, and the first cut may form an opening on the lower surface of the plasma bag 8. This is not as large as the opening in the lower surface of the plasma bag 8 formed by the first and second incisions, but the removal efficiency of the plasma cake in the plasma bag 8 is relatively low.

As shown in fig. 8 to 12, the hammer type separating device 3 includes a fixing mechanism for holding both ends of the plasma bag 8 having an opening in the lower surface thereof so as to fix the plasma bag 8, and a hammer mechanism 33 for striking the plasma bag 8 from above the plasma bag 8 so that the plasma cake in the plasma bag 8 comes out of the opening. The fixing means comprise a first fixing means 31 for clamping a first end of the plasma bag 8 and a second fixing means 32 for clamping a second end of the plasma bag 8.

As shown in fig. 9 and 10, the first fixing mechanism 31 includes a mounting member b311, eight claw mechanisms c312 provided on the mounting member b311, and eight shearing mechanisms 313 provided on the mounting member b311, both ends of the mounting member b311 are pivotally connected to the housing 1 through a pivot shaft 314, and a servo motor c315 is used to drive the mounting member b311 to rotate by a preset angle. The jaw mechanism c312 includes two pairs of first jaws 3121 engaged with each other and a driving part for driving the opening and closing of each pair of first jaws 3121, the driving part including two links a3122 and a cylinder a3123, first ends of the two links a3122 are pivotally connected to one first jaw 3121, the cylinder a3123 is fixedly connected to the mounting member b311, and free ends of telescopic rods of the cylinder a3123 are pivotally connected to second ends of the two links a3122, respectively. The telescopic movement of the telescopic rod by the cylinder a3123 causes the opening and closing actions of each pair of first pawls 3121. One shearing mechanism 313 is arranged between one pair of first claws 3121 and the other pair of first claws 3121 in the claw mechanism c312, and the shearing mechanism 313 is used for shearing off the connection pipe of the first end of the plasma bag 8. The shearing mechanism 313 includes two symmetrical swing links 3131, two link b3132, and one cylinder b3133, first ends of the two swing links 3131 are pivotally connected to the mounting member b311, first ends of each link b3132 are respectively pivotally connected to opposite sides of the swing links 3131, the cylinder b3133 is fixed to the mounting member b311, a telescopic rod of the cylinder b3133 is pivotally connected to second ends of the two links b3132, and a second end of one swing link 3131 is provided with a shearing blade 31311. The telescopic rod of the cylinder b3133 stretches and moves to enable the two swing rods 3131 to swing towards or away from each other, so that the connecting pipe at the first end of the plasma bag 8 is cut off. The servomotor c315 is capable of dropping the cut-off nozzle segment of the first end of the plasma bag 8 into a set collecting tank for collection by driving the mounting member b311 to rotate a preset angle.

It will be appreciated that a shear blade 31311 may also be provided at the second end of both swing arms 3131. In addition, the opening and closing actions of each pair of the first claws 3121 and the opposite or opposite swinging of the two swinging rods 3131 may also be realized by a scissor mechanism. The mounting member b311 may be fixedly connected to the housing 1.

As shown in fig. 11, the second fixing mechanism 32 includes a mounting member c321, eight claw mechanisms d322 provided on the mounting member c 321. The structure of the jaw mechanism d322 is the same as that of the jaw mechanism c312, and will not be described again here.

As shown in fig. 12, the hammer mechanism 33 includes a mounting member a331, a cylinder c332 fixed to the mounting member a331, a link c333 connected to a telescopic rod of the cylinder c332, and a hammer head 334 detachably connected to the link c333 through a quick-fit clip 335. The surface structure of the hammer 334 is made of flexible material, preferably elastic material (such as rubber, silica gel, etc.). Wherein the mounting member a331 is coupled to the frame b so as to be slid with respect to the housing 1 by the slider a 222.

In a state where the first fixing mechanism 31 and the second fixing mechanism 32 clamp the plasma bag 8, the telescopic rod of the cylinder c332 is in telescopic motion, the hammer 334 is driven to move up and down by the connecting rod c333, and the hammer 334 hits the upper surface of the plasma bag 8, so that the plasma block in the plasma bag 8 is separated from the opening on the lower surface of the plasma bag 8 and falls into the plasma tank 12.

The hammer head 334 is detachably connected with the connecting rod c333, so that the hammer heads 334 with different specifications can be selected according to the plasma bags 8 with different specifications, and the plasma blocks in the plasma bags 8 can be broken more conveniently and can be separated from the opening on the lower surface of the plasma bags 8. The hammer 334 and the connecting rod c333 are connected through the fast-assembling clamp 335, so that the hammer 334 and the connecting rod c333 are convenient to assemble and disassemble, the efficiency of replacing the hammer 334 is improved, and the production efficiency is further improved. The surface structure of the hammer 334 is made of flexible materials, so that the risk of cracking of the plasma bag 8 when the hammer 334 strikes the plasma bag 8 can be reduced, and the plasma bag 8 is prevented from being polluted due to falling of fragments.

It should be noted that, the detachable connection between the hammer 334 and the connecting rod c333 through the quick-mounting clip 335 is only a preferred arrangement mode, and in practical application, the adjustment can be performed, for example, the detachable connection between the hammer 334 and the connecting rod c333 through a screw connection mode or a pin connection mode, and the like, and the detachable connection between the hammer 334 and the connecting rod c333 can also be realized through welding, bonding, and the like. The entirety of the hammer head 334 may be made of a flexible material or an elastic material, or only a portion of the hammer head 334 that contacts the plasma band 8 may be made of a flexible material or an elastic material.

In another possible embodiment, the hammer head 334 and the link c333 may be connected by an elastic member such as a spring or a rubber block. In the process that the telescopic rod of the cylinder c332 stretches and contracts to drive the hammer head 334 to move up and down through the connecting rod c333 to strike the plasma bag 8, the elastic component can increase the frequency of the hammer head 334 striking the plasma bag 8, so that the efficiency of plasma block falling out in the plasma bag 8 is improved.

On the basis of the above-described embodiment, it is preferable that the mounting member c321 is provided with a gripper driven by the driving portion for gripping the plasma bag 8 so as to improve the firmness of the plasma bag 8 during the striking of the plasma bag 8 by the hammer mechanism 33, reducing the risk of dropping the plasma bag 8. For example, the claw mechanism b224 in the second clamping mechanism 22 serves as a gripper provided on the mounting member c321 and driven by the driving section. By sharing the click-on mechanism b224, the number of parts is reduced, and the manufacturing cost is reduced.

In another possible embodiment, the first fixing mechanism and the second fixing mechanism may be configured to have two rows of rollers symmetrically disposed, the upper row of rollers is sleeved with an upper annular belt, the lower row of rollers is sleeved with a lower annular belt, a lower side section of the upper annular belt abuts against an upper side section of the lower annular belt, and two ends of the plasma bag are respectively moved between the upper annular belt and the lower annular belt from one ends of the first fixing mechanism and the second fixing mechanism, and are clamped and fixed between the upper annular belt and the lower annular belt as the upper annular belt and the lower annular belt rotate to a set position.

Referring to fig. 14, the empty bag drain 5 includes a hanging pin 534 for hooking the empty plasma bag 8.

As shown in fig. 13, the empty bag transfer device 4 includes a multi-joint robot arm and a link frame 42 pivotally connected to the end of the multi-joint robot arm, the second fixing mechanism 32 is pivotally connected to the link frame 42, a driving mechanism a43 for driving the second fixing mechanism 32 to rotate is provided on the link frame 42, and the second fixing mechanism 32 can clamp the empty plasma bag 8 to rotate by a set angle when the link frame 42 moves to a preset position so as to hook the empty plasma bag 8 to the hook needle 534. Specifically, the multi-joint mechanical arm includes two mounting frames c411 for fixing to the housing 1, two connecting arms b414 pivotally connected in sequence, and two connecting arm driving parts (such as a servo motor d 419) for driving the two connecting arms b414 to rotate respectively, the connecting frame 42 is pivotally connected with the end of the last connecting arm b414, two groups of connecting rods are respectively arranged at two sides of the multi-joint mechanical arm, each group of connecting rods includes two connecting arm rods b415 and one connecting rod d416, one end of each connecting arm rod b415 is pivotally connected to a rotating shaft at two ends of each connecting arm b414, and two ends of each connecting rod d416 are pivotally connected to the other ends of each connecting arm rod b415 respectively, so that a parallelogram mechanism is formed with the corresponding connecting arm b 414.

As shown in fig. 13, a first rotating shaft 412 and a second rotating shaft 413 parallel to each other are provided between the two mounting frames c411, the proximal end of the first connecting arm b414 (i.e., the end close to the mounting frame c411 in the direction of the transmission chain) is pivotally connected to the first rotating shaft 412 on the mounting frame c411, both ends of the first connecting rod d416 are respectively pivotally connected to the second rotating shaft 413 on the mounting frame c411 and the other end of the connecting arm rod b415 connected to the distal end of the first connecting arm b414, the connecting arm rod b415 connected to the proximal end of the first connecting arm b414 is a virtual connecting rod, and the position thereof with the mounting frame c411 is kept unchanged, and the connecting arm rods b415 pivotally connected to the same rotating shaft are fixedly connected, so that the parallelogram mechanisms adjacent to each other are disposed in linkage so that the posture of the connecting frame 42 is kept unchanged during the action of the multi-joint mechanical arm. It should be noted that the arm rod b415 pivotally connected to the same shaft may be integrally formed.

By such arrangement, the second end of the plasma bag 8 can be held by the second fixing mechanism 32 at the end of the empty bag transfer device 4 while the second end of the plasma bag 8 is being moved, so that the plasma bag 8 can be kept in a relatively stable posture, and the risk that the plasma bag 8 is greatly shaken and falls down can be reduced. It will be appreciated that the arm bar b415 connected to the proximal end of the first connecting arm b414 may also be a solid arm bar with both ends pivotally connected to the first shaft 412 and the second shaft 413, respectively; in addition, two groups of connecting rods can be arranged on one side of the multi-joint mechanical arm, but the stability is not as good as that of two groups of connecting rods arranged on two sides of the multi-joint mechanical arm.

As shown in fig. 13, two servo motors d419 are fixed to the two mounting frames c411, respectively. The output shaft of one servo motor d419 is in driving connection with the proximal end of the first connecting arm b414 through a coupler, and the other servo motor d419 is in driving connection with the second connecting arm b414 through a connecting rod assembly. The link assembly includes one rocker b417 and one link b418, a first end of the rocker b417 is pivotally connected to the first rotation shaft 412, an output shaft of the other servo motor d419 is drivingly connected to the first end of the rocker b417, a first end of the link b418 is pivotally connected to a second end of the rocker b417, a second end of the link b418 is pivotally connected to the second link arm b414, and a length between a position where the second end of the link b418 is connected to the second link arm b414 and a proximal end of the second link arm b414 is equal to a length of the rocker b 417.

By such arrangement, the pivot angle of each connecting arm b414 can be more conveniently controlled, and the action of the empty bag transfer device 4 can be conveniently controlled. The two servo motors d419 are respectively fixed to the two mounting frames c411, so that inertia of the multi-joint mechanical arm in the moving process can be reduced, and the flexibility and the accuracy of the action of the empty bag transfer device 4 are further improved. It should be noted that, the length between the position where the second end of the connecting rod b418 is connected to the second connecting arm b414 and the proximal end of the second connecting arm b414 may be different from the length of the rocker b417, so that the angular relationship between the rotation angle of the connecting arm b414 and the corresponding rocker b417 needs to be obtained through experiments, and then the rocker b417 is rotated by a set angle through the servo motor d419 so that the connecting arm b414 rotates by a corresponding angle.

As shown in fig. 13, the driving mechanism a43 includes a cylinder d431 pivotally connected to the link frame 42, a crank 433 pivotally connected to a telescopic rod 432 of the cylinder d431, and the crank 433 is connected to the second fixing mechanism 32.

By the telescopic action of the telescopic rod 432 of the cylinder d431, the crank 433 is rotated approximately 90 degrees counterclockwise, and the second fixing mechanism 32 is rotated 90 degrees counterclockwise accordingly, so that the plasma bag 8 held by the second fixing mechanism 32 is hooked on the hooking needle 534 on the left side of the empty bag draining device 5. The claw mechanism d322 on the second fixing mechanism 32 releases the plasma bag 8, after which the empty bag transfer device 4 is moved back to the initial position (the position shown in fig. 13).

In another possible arrangement, the driving mechanism a43 may be replaced by a servo motor provided on the connecting frame 42, the output shaft of the servo motor is connected to the end of the second fixing mechanism 32, and the servo motor directly drives the second fixing mechanism 32 to rotate by a set angle so as to hook the plasma bag 8 clamped by the second fixing mechanism 32 onto the hanging needle 534 on the left side of the empty bag draining device 5.

In another possible embodiment, the empty bag transfer device may be configured as a mechanical arm formed by connecting multiple stages of sliding assemblies, however, the empty bag transfer device has larger volume and weight, which is not superior to the operation flexibility and accuracy of the empty bag transfer device in the above embodiment.

As shown in fig. 14 to 18 and referring to the orientation shown in fig. 14, the empty bag drain 5 includes a carriage 51, an endless conveyor mechanism disposed on the carriage 51, and a plurality of generally horizontally extending hanging pins 534 located on the left and right sides of the carriage 51. The endless conveyor mechanism is used to drive the hanging needle 534 to circulate on the left and right sides of the holder 51 so that an empty plasma bag 8 is hooked to the hanging needle 534 on the left side of the holder 51 and removed after moving to the right side of the holder 51. The bracket 51 is fixed to the housing 1 by two mounting brackets d 52.

As shown in fig. 15 and 16, the endless conveying mechanism includes an endless slide rail 531 provided on the holder 51, sixteen moving members 532 that cooperate with the endless slide rail 531, and a driving mechanism that drives the moving members 532 to move relative to the endless slide rail 531. Each moving member 532 is provided with at least one pair of rollers 5321, each pair of rollers 5321 straddles two sides of the annular slide rail 531, and each moving member 532 is fixedly connected with a hanging needle 534. The driving mechanism includes two driving wheels (e.g., a driving sprocket 5331 and a driven sprocket 5332) provided on the bracket 51, an endless chain 5333 supported on the two driving wheels, and a moving member 532 is connected to an outer edge of the endless chain 5333, and the driving sprocket 5331 is driven by a motor (not shown) provided on the bracket 51. The motor drives the driving sprocket 5331 to rotate, and the endless chain 5333 rotates along with the rotation of the driving sprocket 5331, so that the moving member 532 is driven to move around the endless sliding rail 531, so that the moving member 532 on the left side of the bracket 51 moves to the right side of the bracket 51, and the hanging needle 534 on the left side of the bracket 51 and the plurality of hanging empty plasma bags which have been drained move to the right side of the bracket 51 together.

As shown in fig. 17 and 18, the empty bag drain device 5 further includes two bag returning mechanisms each including a bag returning plate 541 and a driving mechanism b542 connecting the bracket 51 and the bag returning plate 541, the bag returning plate 541 extending upward from the lower edge with four grooves 5411. The driving mechanism b542 includes a linear slide 5421, a slider d5422, a link e5423, a cylinder e5424, and a link f5425, where the linear slide 5421 is disposed on the bracket 51 and parallel to the axial direction of the hanging needle 534 located on the right side of the bracket 51, and the slider d5422 is slidably connected to the linear slide 5421. The connecting rod e5423 comprises a first rod segment 54231 and a second rod segment 54232, a first end of the first rod segment 54231 is pivotally connected with the slider d5422, a pivot axis of the first rod segment 54231 and the slider d5422 is perpendicular to the linear slide rail 5421, and a first end and a second end of the second rod segment 54232 are fixedly connected with a second end of the first rod segment 54231 and the bag withdrawing plate 541 respectively. The cylinder e5424 is fixed to the bracket 51, a first end of the link f5425 is pivotally connected to a free end of a telescopic rod of the cylinder e5424, and a second end of the link f5425 is pivotally connected to a second end of the first rod segment 54232. The bracket 51 is provided with a proximity switch 5426.

As shown in fig. 18, in use, the telescopic rod of the cylinder e5424 is extended, the connecting rod f5425 moves rightward, and the acting force of the second end (left end) of the connecting rod f5425 on the second end of the first rod segment 54231 causes the first rod segment 54231 to generate a clockwise torque around its rotation axis with the slider d5422, and the acting force of the gravity force of the bag withdrawing plate 541 on the second end of the second rod segment 54232 also causes the first rod segment 54231 to generate a clockwise torque around its rotation axis with the slider d 5422. The first rod section 54231, the second rod section 54232 and the bag withdrawing plate 541 are rotated by a clockwise moment around the rotation axis of the first rod section 54231 and the slider d5422 by a certain angle, so that the bag withdrawing plate 541 is moved obliquely downwards from the initial position to enable the grooves 5411 on the bag withdrawing plate 541 to straddle the corresponding hanging needles 534 (namely, the hanging needles 534 are positioned in the corresponding grooves 5411), and then the slider d5422 continues to move rightwards along the linear sliding rail 5421 along with the extension rod of the air cylinder e5424, so that the bag withdrawing plate 541 pushes the empty plasma bags 8 positioned on the hanging needles 534 on the right side of the bracket 51, and the empty plasma bags 8 are separated from the hanging needles 534 and collected to the bag receiving platform 15. Thereafter, the telescopic rod of the cylinder e5424 is retracted, the connecting rod f5425 moves leftwards therewith, the second end (left end) of the connecting rod f5425 applies a force to the second end of the first rod section 54231 to enable the first rod section 54231 to generate a counterclockwise torque around the rotating shaft of the first rod section 5422, the force applied by the second end (left end) of the connecting rod f5425 to the second end of the second rod section 54232 under the action of gravity and the bag withdrawing plate 541 also enables the first rod section 54231 to generate a clockwise torque around the rotating shaft of the first rod section 5422 to be equal to the rotating shaft of the first rod section d5422, the bag withdrawing plate 541, the first rod section 54231 and the second rod section 54232 move leftwards along with the sliding block d5422, when the sliding block d5422 moves to the leftmost end of the linear sliding rail 5421, the second end (left end) of the connecting rod f5425 applies a counterclockwise torque around the rotating shaft of the first rod section d5422 to enable the second end (left end) of the first rod section 54231 to generate a counterclockwise torque around the rotating shaft of the first rod section 5452 to the sliding block d5422 to be increased, and the first rod section 5226 and the first rod section 5248 rotate counterclockwise along the rotating shaft of the sliding rod section 5248. When the second lever segment 54232 is rotated counterclockwise to a position corresponding to the proximity switch 5426, the proximity switch 5426 is triggered, the cylinder e5424 stops operating, and the bag withdrawing plate 541 is maintained at the initial position.

With this arrangement, the movement of the bag withdrawing plate 541 can be skillfully performed, so that the bag withdrawing plate 541 can smoothly remove the empty plasma bag 8 from the hanging needle 534 and smoothly reset the bag withdrawing plate 541. By providing the bag retracting mechanism with the above-described structure, the number of driving devices is simplified, facilitating the removal of the empty plasma bag 8. The empty bag transfer device 4 hooks the empty plasma bag 8 on the hanging needle 534 on the left side of the empty bag draining device 5, and after the hanging needle 534 on the left side of the empty bag draining device 5 hooks the empty plasma bag 8, the annular conveying mechanism moves the hanging needle 534 on the left side to the right side, the hanging needle 534 on the left side moves to the left side, and the empty bag transfer device 4 can continue to hook the empty plasma bag 8 on the hanging needle 534 of the plasma bag 8 which is not hooked. After the empty plasma bags 8 on the right side hanging needle 534 are drained, the bag withdrawing mechanism removes the empty plasma bags 8 on the right side hanging needle 534 from the corresponding hanging needle 534, and can continuously hook the empty plasma bags 8 so as to drain the plasma in the empty plasma bags 8.

It should be noted that, the cylinder e5424 may be disposed opposite to the direction in fig. 18, that is, the cylinder e5424 is entirely located on the right side of the connecting rod f5425, and the bag withdrawing plate 541 removes the empty plasma bag 8 on the hanging needle 534 on the right side of the bracket 51 rightward during the retraction of the telescopic rod of the cylinder e5424, and moves leftward to reset during the extension of the telescopic rod of the cylinder e 5424. The link e5423 may also be provided as a straight bar, with the second end (left end) of the link f5425 pivotally connected between the two ends of the link e5423, the link f5425 intersecting the link e 5423. In addition, the linear slide 5421 may be replaced by a linear slide slot, and the slider d5422 is slidably connected to the linear slide slot. In addition, the empty bag draining device 5 may include only one bag withdrawing mechanism, and the bag withdrawing plate is provided with grooves equal to the number of hanging pins 534 on the right side of the bracket 51.

In another possible embodiment, instead of the proximity switch 5426 being provided on the bracket 51, a limiting member may be provided on the bracket 51, which limits further oscillation of the second leg 54232 when it is oscillated counter-clockwise to the initial position.

In another possible embodiment, the bag removing mechanism may include a plurality of sub bag removing mechanisms, where one sub bag removing mechanism is disposed on each moving member 532, and the sub bag removing mechanism includes a linear motor and a bag removing plate connected to a telescopic shaft of the linear motor, and a hole for a corresponding hanging needle to pass through is formed in a middle portion of the bag removing plate, and the linear motor drives the bag removing plate to move along an axial direction of the hanging needle to remove an empty plasma bag on the hanging needle.

It should be noted that each cylinder may be replaced by a linear motor. Because the cylinder still can further compress under the dead condition of card, consequently be difficult to damage, the reliability is higher to the cylinder weight is lighter, can less each device's weight, and then improves action accuracy.

In another possible embodiment, the empty bag draining device may not include a bag returning mechanism, and the empty plasma bag that has been drained may be manually removed from the hanging needle.

Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will fall within the scope of the present invention.

Claims

1. An empty bag drain for a plasma bag breaker, comprising a support, an annular conveying mechanism arranged on the support, and a plurality of hanging needles which are arranged on a first side and a second side of the support and extend approximately horizontally,

the annular conveying mechanism is used for driving the hanging needle to circularly move on the first side and the second side of the bracket, so that an empty plasma bag is hooked to the hanging needle on the first side of the bracket and is taken down after moving to the second side of the bracket;

the empty bag draining device further comprises a bag returning mechanism, wherein the bag returning mechanism is used for taking down an empty bag on a hanging needle positioned on the second side of the bracket;

The bag withdrawing mechanism is arranged on the bracket and can remove empty bags on a plurality of hanging needles positioned on the second side of the bracket at one time;

the bag withdrawing mechanism comprises a bag withdrawing plate and a second driving mechanism connected with the bracket and the bag withdrawing plate, the bag withdrawing plate is upwards extended from the lower edge to form grooves with the same number as the hanging needles positioned on the second side of the bracket,

in the process that the second driving mechanism drives the bag returning plate to move, each groove moves from an initial position above the corresponding hanging needle to a position straddling the corresponding hanging needle and pushes the empty bag to move along the axial direction of the hanging needle;

the second driving mechanism includes:

a slideway arranged on the bracket and parallel to the axial direction of the hanging needle at the second side of the bracket;

the sliding block is in sliding connection with the slideway;

the first end of the first connecting rod is pivotally connected with the sliding block, the pivot shafts of the first connecting rod and the sliding block are perpendicular to the slideway, and the second end of the first connecting rod is fixedly connected with the bag withdrawing plate;

a linear driving device fixed to the bracket;

The first end of the second connecting rod is pivotally connected with the telescopic member of the linear driving device, and the second end of the second connecting rod is pivotally connected with the first connecting rod, so that acting force of the second connecting rod on the first connecting rod during the process that the telescopic member of the linear driving device moves along two different directions respectively generates forward torque and reverse torque around the rotating shaft of the first connecting rod.

2. The empty bag drain apparatus according to claim 1, wherein the endless conveying mechanism includes an endless track provided on the support, a plurality of moving members engaged with the endless track, and a first driving mechanism driving the moving members to move relative to the endless track, and the hanging needle is fixedly connected with the moving members.

3. The empty bag drain apparatus according to claim 2, wherein at least one pair of rollers is provided on each of the moving members, each pair of rollers straddling both sides of the endless track.

4. The empty bag drain apparatus according to claim 2, wherein the first driving mechanism includes two driving wheels provided on the frame and an endless belt or an endless chain supported on the two driving wheels, the moving member being connected to the endless belt or the endless chain.

5. The empty bag drain apparatus of claim 1, wherein the first link includes a first rod segment and a second rod segment, the first end of the first rod segment being pivotally connected to the slider, the first end and the second end of the second rod segment being fixedly connected to the second end of the first rod segment and the bag return plate, respectively, and the second end of the second link being pivotally connected to the second end of the first rod segment.

6. The empty bag draining device according to claim 1, wherein a proximity switch is further arranged on the bracket,

when the slide block moves to one end of the slide way far away from the bag withdrawing plate and the first connecting rod rotates around the rotating shaft of the slide way forwards by a set angle, the proximity switch is triggered, and the linear driving device is stopped based on a trigger signal of the proximity switch so that the bag withdrawing plate is kept at the initial position.