CN113928672A - Bag cutting device for plasma bag breaking machine - Google Patents

Abstract

The invention relates to the technical field of plasma bag breaking, in particular to a bag cutting device for a plasma bag breaking machine, and aims to solve the problem that at least one part of label paper falls into plasma to pollute the plasma due to the fact that an automatic blood bag and bag separator cannot accurately open the bottom of a plasma bag. To this end, the bag breaking device for a plasma bag breaking machine of the invention is used for breaking an opening on a plasma bag, the plasma bag breaking machine further comprises a separating device arranged at the downstream of the bag breaking device and used for enabling a plasma block to be separated from the opening, the bag breaking device comprises a clamping mechanism, a first cutter and a second cutter, the clamping mechanism is used for moving the plasma bag to the separating device, the first cutter and the second cutter are arranged on a moving path of the plasma bag, so that the lower surface of the plasma bag forms a first cut and a second cut respectively along a first direction and a second direction which intersect under the action of the first cutter and the second cutter during the moving process of the plasma bag, and the first cut and the second cut form the opening.

Description

Bag cutting device for plasma bag breaking machine

Technical Field

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

Background

The blood product is mainly a bioactive preparation prepared from blood plasma of healthy people or specific immune human blood plasma by separation and purification technology, such as human serum albumin, human immunoglobulin, small product, etc., and can be used for diagnosis, treatment or passive immunoprophylaxis. Plasma collected from healthy persons is contained in a standard plasma bag and frozen into an ice body for storage, and the plasma bag which is cleaned and sterilized before blood products are produced needs to be broken so as to take out the ice body plasma and put the ice body plasma into a melting slurry tank for melting.

The patent (CN207902883U) discloses an automatic blood, bag separating centrifuge, including the workstation, the top of workstation is provided with transport mechanism and quick-witted case, and quick-witted incasement has set gradually feed inlet, delivery roller mechanism, squeeze roll and blood bag discharge gate along the direction of transfer, and delivery roller mechanism below is provided with broken bag sword, and transport mechanism's end is connected with the feed inlet, and blood bag discharge gate department is provided with the tray. The side surface of the bottom end of the case is provided with a plasma discharge port, and a packing auger is arranged in the plasma discharge port and used for transferring plasma from the bottom of the case into the slurry melting tank. When the plasma bag conveying device works, the plasma bag is conveyed to the tail end from the front end of the conveying mechanism, enters the working box from the feeding port and is clamped by the conveying roller mechanism. The plasma bag is in the in-process of being held by conveying roller mechanism and forward motion, is scratched by the broken bag sword that is located conveying roller mechanism below and is broken, then continues forward motion to the squeeze roll, the squeeze roll is when continuing forward the transportation of plasma bag extrudes the plasma bag, extrude the plasma in the plasma bag, the plasma that is extruded drops downwards to the plasma discharge gate, then is transmitted to melting the plasma jar by the auger and is carried out further processing, empty plasma bag is then transported out to the tray in through the plasma bag discharge gate and is collected.

The transmission mechanism in the automatic blood and bag separator is a conveyor belt type transmission mechanism, and the blood plasma bag is placed above the conveyor belt and is conveyed to the tail end from the front end of the transmission mechanism and enters the working box from the feeding port. In the process of conveying the plasma bag by the conveying mechanism, the plasma bag is easy to turn over so that the front side of the plasma bag attached with the label paper faces downwards, and at least one part of the label paper is peeled off from the plasma bag while the bag breaking knife breaks the plasma bag, so that plasma is polluted when the plasma bag falls into plasma.

In order to solve the problem that the automatic blood bag and bag separator cannot accurately open the bottom of the blood plasma bag, so that at least a part of label paper falls into the blood plasma to pollute the blood plasma, a new bag cutting device is needed.

Disclosure of Invention

The invention aims to solve the technical problem that at least one part of label paper falls into plasma to pollute the plasma due to the fact that an automatic blood bag separator cannot accurately open the bottom of a plasma bag. The invention provides a bag cutting device for a plasma bag breaking machine, wherein the bag cutting device is used for cutting an opening on a plasma bag, the plasma bag breaking machine further comprises a separating device arranged at the downstream of the bag cutting device, the separating device is used for removing a plasma block in the plasma bag from the opening, the bag cutting device comprises a clamping mechanism, a first cutter and a second cutter, the clamping mechanism is used for moving the plasma bag to the separating device, the first cutter and the second cutter are arranged on a moving path of the plasma bag, so that the lower surface of the plasma bag forms a first cut along a first direction under the action of the first cutter and forms a second cut along a second direction under the action of the second cutter during the moving of the plasma bag; wherein the first direction and the second direction intersect, the first cut and the second cut forming the opening.

In a preferred technical solution of the above-mentioned bag dividing device, the moving path includes a first path and a second path, the clamping mechanism includes a first clamping mechanism and a second clamping mechanism, the first clamping mechanism is used for moving the plasma bag along the first path, the second clamping mechanism is used for moving the plasma bag along the second path, the first cutter is disposed on the first path, and the second cutter is disposed on the second path.

In a preferred embodiment of the above-mentioned bag cutting device, the first cutter comprises a first cutter holder and a plurality of first blades, each of the first blades is used for forming one first incision on one plasma bag; the second cutter comprises a second blade carrier and at least one second blade for making at least one second cut on all plasma bags.

In a preferred embodiment of the above-mentioned bag-cutting device, the first knife comprises a first knife holder and at least one first knife blade, and the first knife blade is used for forming at least one first cut on all plasma bags; the second cutter comprises a second blade holder and a plurality of second blades, each second blade for making one of the second cuts in one of the plasma bags.

In a preferred embodiment of the above-mentioned bag cutting device, a first elastic member is connected between the first blade holder and the first blade; and/or a second elastic member is connected between the second tool holder and the second blade.

In the preferable technical scheme of the above bag dividing device, a vertical first sliding groove is arranged on the first knife rest, a first sliding block connected with the first sliding groove in a sliding manner is arranged in the first sliding groove, and the first blade is fixedly connected with the first sliding block; and/or a vertical second sliding groove is formed in the second tool rest, a second sliding block in sliding connection with the second sliding groove is arranged in the second sliding groove, and the second blade is fixedly connected with the second sliding block.

In a preferred technical solution of the above-mentioned bag dividing device, the first blade and the second blade are both ceramic blades.

In a preferred embodiment of the above-mentioned bagging device, the first direction is perpendicular to the second direction.

In a preferred embodiment of the above-mentioned bag cutting device, the first direction is along a length direction of the plasma bag, and the second direction is along a width direction of the plasma bag.

In a preferred technical solution of the above-mentioned bag dividing device, the second clamping mechanism is fixedly connected to the separating device.

Under the condition of adopting the technical scheme, the plasma bag is clamped by the clamping mechanism to move to the separation device, the first cutter and the second cutter are arranged on the moving path of the plasma bag, so that a first cut along a first direction is formed on the lower surface of the plasma bag under the action of the first cutter and a second cut along a second direction is formed on the lower surface of the plasma bag under the action of the second cutter in the moving process of the plasma bag, the first direction is intersected with the second direction, and the first cut and the second cut form an opening. Through the setting of this kind, fixture centre gripping plasma bag makes its in-process that moves to separation conversion equipment, can make the plasma bag remain stable gesture, thereby form the opening at the lower surface of plasma bag all the time, avoided current automatic blood, bag separating centrifuge in-process plasma bag of conveyer belt conveyor device transmission plasma bag easy emergence upset makes the plasma bag adhere to label paper down and the condition emergence that label paper was peeled off and drop to plasma in the lower surface formed the opening under the effect of cutter, plasma's cleanliness factor has been guaranteed.

Drawings

A preferred embodiment of the invention is described below in conjunction with the attached drawing figures and a hammer blow plasma bag rupturing machine, wherein:

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

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

FIG. 3 is a left side view of a hammered plasma bag breaking machine according to one embodiment of the present invention;

FIG. 4 is a diagram illustrating the position relationship among the bag cutting device, the hammering type separating device, the empty bag transferring device and the empty bag draining device of the hammering type plasma bag breaking machine according to the embodiment of the present invention;

FIG. 5 is a schematic diagram of a bag cutting device of the hammering type plasma bag breaking machine according to one embodiment of the invention;

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

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

FIG. 8 is a block diagram of a hammering type separating device of the hammering type plasma bag breaking machine according to one embodiment of the present invention;

FIG. 9 is a block diagram of a first securing mechanism of a hammering type separating device of a hammering type plasma bag breaking machine according to an embodiment of the present invention;

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

FIG. 11 is a block diagram of a second securing mechanism of the hammering type separating device of the bag-breaking machine for hammering type plasma bags according to one embodiment of the present invention;

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

FIG. 13 is a schematic diagram of a hollow bag transfer device of a hammering type plasma bag breaking machine according to an embodiment of the invention;

FIG. 14 is a first schematic diagram (from a top view to a bottom view) of the hollow bag draining device of the hammering type plasma bag breaking machine according to one embodiment of the present invention;

FIG. 15 is a second schematic diagram (from the bottom to the top) of the hollow bag draining device of the hammering type plasma bag breaking machine according to the embodiment of the present invention;

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

FIG. 17 is a third schematic diagram of the hollow bag draining device of the hammering type plasma bag breaking machine (from top to bottom and showing the view of the internal structure) according to one embodiment of the invention;

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

List of reference numerals:

1. a housing; 11. a plasma bag positioning tool; 12. a plasma tank; 13. a packing 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 jaw mechanism a; 215. an arm connecting rod 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 slide block a; 223. a connecting frame b; 224. a jaw mechanism b; 23. A first cutter; 231. a first tool holder; 232. a first chute; 233. a slide block b; 234. a first blade; 235. a first spring; 24. a second cutter; 241. a second tool holder; 242. a second sliding groove; 243. a slide block c; 244. a second blade; 245. a second spring; 3. a hammer separator; 31. A first fixing mechanism; 311. a mounting member b; 312. a jaw mechanism c; 3121. a first jaw; 3122. a connecting rod a; 3123. a cylinder a; 313. a shearing mechanism; 3131. a swing rod; 31311. a shearing blade; 3132. a connecting rod b; 3133. a cylinder b; 314. a pivotal shaft; 315. a servo motor c; 32. a second fixing mechanism; 321. a mounting member c; 322. a jaw 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. quickly mounting a 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 lever 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 support; 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 withdrawing plate; 5411. a groove; 542. a drive mechanism b; 5421. a linear slide rail; 5422. a slider 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. a plasma bag positioning tool of a cleaning machine; 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 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, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, 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 otherwise explicitly specified or limited, the term "connected" is to be interpreted broadly, e.g., as a fixed connection, a detachable connection, or an integral connection; either directly or indirectly through intervening media, or through the communication between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The hammering type plasma bag breaking machine will be described in detail with reference to fig. 1 to 18. Fig. 1 is a structural diagram of a hammering type plasma bag breaking machine according to an embodiment of the invention; FIG. 2 is a front view of a hammer blow plasma bag breaker according to one embodiment of the present invention; FIG. 3 is a left side view of a hammered plasma bag breaking machine according to one embodiment of the present invention; FIG. 4 is a diagram illustrating the position relationship among the bag cutting device, the hammering type separating device, the empty bag transferring device and the empty bag draining device of the hammering type plasma bag breaking machine according to the embodiment of the invention; fig. 5 is a structural diagram of a bag cutting device of the hammering type plasma bag breaking machine according to an embodiment of the invention; FIG. 6 is an enlarged view of detail A of FIG. 5; FIG. 7 is an enlarged view of detail B of FIG. 5; FIG. 8 is a block diagram of a hammering type separating device of the hammering type plasma bag breaking machine according to one embodiment of the present invention; fig. 9 is a structural view of a first fixing mechanism of the hammering type separation device in the hammering type plasma bag breaking machine according to the embodiment of the invention; FIG. 10 is an enlarged view of detail C of FIG. 9; FIG. 11 is a block diagram of a second securing mechanism of the hammer separator device of the hammer bag breaker according to one embodiment of the present invention; FIG. 12 is a block diagram of a hammer mechanism of the hammer separator device of the hammer bag breaker of one embodiment of the present invention; FIG. 13 is a schematic diagram of a hollow bag transfer device of a hammering type plasma bag breaking machine according to an embodiment of the invention; FIG. 14 is a first schematic view (from top to bottom) of an empty bag draining device of a hammering type plasma bag breaking machine according to an embodiment of the present invention; FIG. 15 is a second structural diagram (from the perspective of looking obliquely from bottom to top) of the hollow bag draining device of the hammering type plasma bag breaking machine according to the embodiment of the invention; FIG. 16 is an enlarged view of detail D of FIG. 15; FIG. 17 is a third schematic diagram of the hollow bag draining device of the hammering type plasma bag breaking machine (from top to bottom and showing the view of the internal structure) according to one embodiment of the invention; fig. 18 is an enlarged view of a portion E in fig. 17.

As shown in fig. 1 to 4 and with reference to the orientation shown in fig. 2, the plasma bag breaking machine includes a housing 1 as a frame, a bag cutting device 2 provided in the housing 1, a hammer type separating device 3, an empty bag transfer device 4, and an empty bag draining device 5. The rear side of the shell 1 is provided with a plasma bag positioning tool 7 of a cleaning machine, the shell 1 is internally provided with a plasma bag positioning tool 11 and a plasma tank 12 positioned below the bag scratching device 2, the hammering type separating device 3, the empty bag transfer 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 molten plasma 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 used for receiving the empty plasma bag 8 taken down 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 operations of the bag cutting device 2, the hammering type separating device 3, the empty bag transferring device 4, the empty bag draining device 5 and the packing auger 13, and can interact with an operator so as to input an operation instruction and output an operation state.

As shown in fig. 4 to 7 and referring to fig. 1, the bag cutting device 2 includes a holding mechanism for moving the plasma bag 8 to the hammer separation device 3, and a cutter provided on a moving path of the plasma bag 8 so that the 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 movement path includes a first path and a second path, the tool includes a first tool 23 and a second tool 24, and the first tool 23 and the second tool 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 plasma bag positioning tool 7 of the cleaning machine to the plasma bag positioning tool 11, and the second clamping mechanism 22 is used for moving the plasma bag 8 from the plasma bag positioning tool 11 to the hammering type separating device 3.

As shown in fig. 5, the first gripper mechanism 21 includes a joint robot arm whose front end is connected to the housing 1, a link frame a213 pivotally connected to the tip end of the multi-joint robot arm, and eight gripper mechanisms a214 provided on the link frame a213, the gripper mechanisms a214 being existing pneumatic fingers. The multi-joint mechanical arm comprises two mounting frames a211 fixed to the housing 1, two connecting arms a212 which are sequentially and pivotally connected, and two connecting arm driving parts (such as servo motors a219) 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 a connecting rod a216, one ends of the two connecting arm rods a215 are respectively and pivotally connected to rotating shafts at two ends of the connecting arm a212, and two ends of the connecting rod a216 are respectively and pivotally connected with the other ends of the two connecting arm rods a215, so that a parallelogram mechanism is formed by the two mounting frames a211, the two connecting arms a212 and the two connecting arm driving parts (such as servo motors a 219).

As shown in fig. 5, a first rotating shaft and a second rotating shaft which are parallel to each other are arranged between the two mounting frames a211, a proximal end (i.e., one end close to the mounting frames a211 in the direction of the transmission chain) of the first connecting arm a212 is pivotally connected to the first rotating shaft on the mounting frames a211, both ends of the first connecting rod a216 are respectively pivotally connected to the second rotating shaft on the mounting frames a211 and the other end of the connecting arm rod a215 connected to the distal end of the first connecting arm a212, the connecting arm rod a215 connected to the proximal end of the first connecting arm a212 is a virtual connecting rod, and the position of the connecting arm rod a215 connected to the same rotating shaft is kept unchanged, so that the parallel quadrilateral mechanical arm mechanisms adjacent to each other are linked and arranged to keep the posture of the connecting frame a213 unchanged during the action of the multi-joint quadrilateral mechanical arm. It should be noted that the arm lever a215 pivotally connected to the same rotation shaft may be integrally formed.

Through such setting, can make plasma bag 8 keep stable gesture in first fixture 21 centre gripping plasma bag 8 removal in-process, guarantee the accuracy of plasma bag 8 lower surface incision formation position. It is understood that the link arm a215 connected to the proximal end of the first link arm a212 may also be a solid link arm having two ends pivotally connected to the first rotating shaft and the second rotating shaft, respectively; in addition, two sets of links may be provided only on one side of the articulated robot arm, but such stability is not as good as the stability of two sets of links provided on both sides of the articulated robot arm.

As shown in fig. 5, two servo motors a219 are fixed to the two mounting frames a211, respectively. An output shaft of one servo motor a219 is in driving connection with the proximal end of the first connecting arm a212 through a coupler, and the other servo motor a219 is in driving connection with the second connecting arm a212 through a connecting rod assembly. The connecting rod assembly comprises a rocker a217 and a connecting rod a218, wherein the first end of the rocker a217 is pivotally connected with the first rotating shaft, the output shaft of another servo motor a219 is in driving connection with the first end of the rocker a217, the first end of the connecting rod a218 is pivotally connected with the second end of the rocker a217, the second end of the connecting rod a218 is pivotally connected with the second connecting arm a212, and the length between the position where the second end of the connecting rod a218 is connected with the second connecting arm a212 and the proximal end of the second connecting arm a212 is equal to the length of the rocker a 217.

With this arrangement, the pivoting angle of each connecting arm a212 can be controlled more conveniently, and the action of the first clamping mechanism 21 can be controlled conveniently. Two servo motors a219 are fixed to two mounting brackets a211 respectively, can alleviate the inertia of multi-joint arm at the removal in-process, have further improved the flexibility and the precision of first fixture 21 action. 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 not be equal to the length of the rocker a217, so that the relationship between the rotation angle of the connecting arm a212 and the corresponding angle of the 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 rotates 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 coupled with the mounting bracket b221, a coupling bracket b223 fixedly coupled to the slider a222, and eight claw mechanisms b224 provided on the coupling bracket b 223. The first cutter 23 is disposed on the left side of the plasma bag positioning tool 11, and the second cutter 24 is disposed on the rear side of the plasma bag positioning tool 11.

It should be noted that the specific structure of the first clamping mechanism 21 is only a preferable arrangement, and it can be adjusted in practical applications, for example, the first clamping mechanism 21 may also be the structure of the second clamping mechanism 22. The specific structure of the second clamping mechanism 22 is only a specific arrangement, and it can be adjusted in practical application, for example, the second clamping mechanism 22 can also be configured as the structure of the first clamping mechanism 21. In addition, the number of the connecting arms in the multi-joint mechanical arm can be three, four or more, and the number of the connecting rods and the number of the connecting rod assemblies corresponding to the number of the groups are correspondingly arranged. In addition, it is only a specific arrangement that each of the first clamping mechanism 21 and the second clamping mechanism 22 includes eight jaw mechanisms, and the number of the jaw mechanisms in each of the first clamping mechanism 21 and the second clamping mechanism 22 may be one, three, six, ten or more, for example.

As shown in fig. 5 and 6, the first cutter 23 includes a first cutter holder 231 and eight first blades 234, eight vertical first sliding grooves 232 are arranged on the first cutter holder 231, a sliding block b233 is arranged in each first sliding groove 232, the lower portion of the sliding block b233 is connected with the lower portion of the first sliding groove 232 through a first spring 235, and the upper portion 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 frame 241 and three second blades 244, three vertical second sliding grooves 242 are provided on the second cutter frame 241, a sliding block c243 is provided in each second sliding groove 242, the lower portion of the sliding block c243 is connected with the lower portion of the second sliding groove 242 through a second spring 245, and the upper portion 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 that the first clamping mechanism 21 clamps the plasma bags 8 to move from the plasma bag positioning tool 7 to the plasma bag positioning tool 11 of the cleaning machine, each first blade 234 forms a first notch on the lower surface of one plasma bag 8 along the length direction of the plasma bag 8. In the process that the second clamping mechanism 22 clamps the plasma bags 8 to move from the plasma bag positioning tool 11 to the hammer separation device 3, three second blades 244 form three second cuts in the width direction of the plasma bags 8 on the lower surface of each plasma bag 8. One first cut and three second cuts in the lower surface of each plasma bag 8 form a "feng" shaped opening.

By connecting the blades with the knife rest through the springs, 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 a certain distance downwards when contacting with the lower surface of the plasma bag 8, and the first blade 234 and the second blade 244 can be always contacted with the lower surface of the plasma bag 8, which is curved, under the action of the first spring 235 and the second spring 245, not only can the first notch and the second notch be respectively formed on the lower surface of the plasma bag 8 through the first blade 234 and the second blade 244, but also the situation that the first blade 234 and the second blade 244 are too deep to scratch into the plasma bag 8 at the part where the lower surface of the plasma bag 8 protrudes downwards to cause severe abrasion of the blades is avoided, and the service lives of the first blade 234 and the second blade 244 are prolonged. The first incision is perpendicular to the second incision, so that the size of the opening can be increased, and the plasma block can be conveniently separated 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 first and second slits formed in the lower surface of each plasma bag 8 extend in directions perpendicular to each other, which is only a preferable arrangement, and in practical applications, the first and second slits formed in the lower surface of each plasma bag 8 may be adjusted, for example, the extending directions of the first and second slits formed in the lower surface of each plasma bag 8 may form an acute angle, and the moving directions of the first and second clamping mechanisms 21 and 22 and the orientations of the cutting edges of the first and second blades 234 and 244 may be adaptively adjusted. The first blade 234 and the second blade 244 are provided as ceramic blades, which can reduce the attachment time of plasma on the blades, facilitating the dripping of plasma adhering to the blades. The connection between the blade and the blade holder through the spring is only a specific arrangement, and in practical application, the blade and the blade holder can also be connected through an elastic component such as a rubber block or a silica gel block. In addition, the first blade 234 and the second blade 244 may be made of stainless steel.

In another possible embodiment, the first blade 234 is pivotally connected to the first blade holder 231 by a torsion spring, and/or the second blade 244 is pivotally connected to the second blade holder 241 by a torsion spring, and/or the first blade 234 is pivotally connected to the first blade holder 231 by a torsion spring. In this way, it is also possible to avoid the first blade 234 and/or the second blade 244 from digging too deeply into the plasma bag 8 at the downwardly convex portion of the lower surface of the plasma bag 8, resulting in severe blade wear.

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

In another possible embodiment, the bag-breaking device 2 comprises only one clamping mechanism capable of clamping the plasma bag 8 to move from the washer plasma bag positioning tool 7 to the plasma bag positioning tool 11 and then from the plasma bag positioning tool 11 to the hammer separator device 3. Alternatively, the clamping device may be moved along a circular path, and the first tool 23 and the second tool 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 notch in the lower surface of the plasma bag 8, and the first notch may form an opening in the lower surface of the plasma bag 8. This is just not as large as the opening in the lower surface of the plasma bag 8 formed by the first and second cuts, and the efficiency of the removal of the plasma clot from 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 is pulled out from the opening. The securing mechanism comprises a first securing mechanism 31 for holding a first end of the plasma bag 8 and a second securing mechanism 32 for holding 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 jaw 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 by pivot shafts 314, and a servomotor 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 includes two links a3122 and a cylinder a3123, first ends of the two links a3122 are respectively pivotally connected to one first jaw 3121, the cylinder a3123 is fixedly connected to the mounting member b311, and a free end of a telescopic rod of the cylinder a3123 is pivotally connected to second ends of the two links a 3122. The telescopic movement of the telescopic rod of the cylinder a3123 makes each pair of first jaws 3121 open and close. A shearing mechanism 313 is arranged between one pair of first jaws 3121 and the other pair of first jaws 3121 in the jaw mechanism c312, and the shearing mechanism 313 is used for shearing off the connecting pipe at the first end of the plasma bag 8. The shearing mechanism 313 includes two symmetrical swing levers 3131, two connecting rods b3132, and a cylinder b3133, the first ends of the two swing levers 3131 are pivotally connected to the mounting member b311, the first end of each connecting rod b3132 is pivotally connected to the opposite side of the swing lever 3131, the cylinder b3133 is fixed to the mounting member b311, the telescopic rod of the cylinder b3133 is pivotally connected to the second ends of the two connecting rods b3132, and the second end of one swing lever 3131 is provided with a shearing blade 31311. The telescopic rod of the cylinder b3133 is moved to make the two swing rods 3131 swing towards or away from each other, so as to cut off the connection tube at the first end of the plasma bag 8. The servo motor c315 can drop the stub cut off at the first end of the plasma bag 8 into the set collection tank to be collected by driving the mounting member b311 to rotate by a preset angle.

It will be appreciated that a shear blade 31311 may also be provided at the second ends of both pendulum bars 3131. In addition, the opening and closing of each pair of first claws 3121 and the swinging of the two swing rods 3131 towards or away from each other can also be realized by a scissors 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 click mechanisms d322 provided on the mounting member c 321. The structure of the latch mechanism d322 is the same as the latch mechanism c312 and will not be described in detail.

As shown in fig. 12, the hammering 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 by a snap clip 335. The surface structure of the hammer 334 is a flexible material, preferably an elastic material (such as rubber, silicone, 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.

Under the state that the first fixing mechanism 31 and the second fixing mechanism 32 respectively clamp the plasma bag 8, the telescopic rod of the cylinder c332 stretches and retracts, the connecting rod c333 drives the hammer 334 to move up and down, and the hammer 334 strikes 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.

Through being connected tup 334 with connecting rod c333 detachably, can choose the tup 334 of different specifications for use according to the plasma bag 8 of different specifications to smash the plasma piece in the plasma bag 8 and make the plasma piece deviate from the opening of plasma bag 8 lower surface more conveniently. 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 can be conveniently disassembled and assembled, the efficiency of replacing the hammer 334 is improved, and the production efficiency is further improved. The surface structure of tup 334 sets to flexible material, can reduce the risk that plasma bag 8 takes place to break when tup 334 hits the plasma bag 8, avoids plasma bag 8's incomplete piece to drop and pollutes plasma.

It should be noted that, the detachable connection between the hammer 334 and the connecting rod c333 through the quick-fit clamp 335 is only a preferable configuration, and in practical applications, it may be adjusted, for example, the hammer 334 and the connecting rod c333 may be detachably connected through a screw connection manner or a pin connection manner, and the hammer 334 and the connecting rod c333 may also be non-detachably connected through a welding manner, an adhesion manner, or the like. In addition, the entire hammer head 334 may be made of a flexible material or an elastic material, and only a portion of the hammer head 334 that contacts the plasma strip 8 may be made of a flexible material or an elastic material.

In another possible embodiment, the hammer 334 and the link c333 may be connected by a resilient member, such as a spring or a rubber block. In the process that the telescopic rod of the cylinder c332 stretches and retracts and the connecting rod c333 drives the hammer 334 to move up and down to hit the plasma bag 8, the elastic component can increase the frequency of the hammer 334 for hitting the plasma bag 8, and therefore the efficiency of dropping out of plasma blocks in the plasma bag 8 is improved.

On the basis of the above-described embodiment, it is preferable that the mounting member c321 be provided with a gripper driven by a driving portion for gripping the plasma bag 8, so as to increase the firmness of the plasma bag 8 during the striking of the plasma bag 8 by the hammer mechanism 33, reducing the risk of the plasma bag 8 falling. For example, the claw mechanism b224 in the second gripper mechanism 22 functions as a mechanical claw provided on the mounting member c321 and driven by a driving portion. By sharing the jaw 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 both configured to have two rows of rollers symmetrically arranged up and down, an upper annular belt is sleeved on the upper row of rollers, a lower annular belt is sleeved on the lower row of rollers, a lower side section of the upper annular belt abuts against an upper side section of the lower annular belt, two ends of the plasma bag respectively move from one end of the first fixing mechanism and one end of the second fixing mechanism to a position between the upper annular belt and the lower annular belt, and move to a set position along with the rotation of the upper annular belt and the lower annular belt to be clamped and fixed between the upper annular belt and the lower annular belt.

In another possible embodiment, the hammer separator 3 may be replaced by another separator, such as a separator that presses the plasma bag on its upper surface by a pushing rod mechanism to pull the plasma cake inside out of the opening on the lower surface of the plasma bag.

Referring to fig. 14, the empty bag draining device 5 includes a hanging needle 534 for hanging the empty plasma bag 8.

As shown in fig. 13, the empty bag transfer device 4 includes a multi-joint mechanical arm and a connecting frame 42 pivotally connected to a distal end of the multi-joint mechanical arm, the second fixing mechanism 32 is pivotally connected to the connecting frame 42, a driving mechanism a43 for driving the second fixing mechanism 32 to rotate is disposed on the connecting frame 42, and when the connecting frame 42 moves to a preset position, the second fixing mechanism 32 can hold the empty plasma bag 8 and rotate by a set angle so as to hook the empty plasma bag 8 to the hanging needle 534. Specifically, the multi-joint mechanical arm comprises two mounting frames c411 for being fixed to the housing 1, two connecting arms b414 which are pivotally connected in sequence, and two connecting arm driving parts (such as servo motors d419) which respectively drive the two connecting arms b414 to rotate, the connecting frame 42 is pivotally connected with the tail end of the last connecting arm b414, 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 b415 and a connecting rod d416, one ends of the two connecting arm rods b415 are respectively pivotally connected to rotating shafts at two ends of the connecting arm b414, two ends of the connecting rod d416 are respectively pivotally connected to the other ends of the two connecting arm rods b415, and therefore a parallelogram mechanism is formed by the two connecting arms b 414.

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

Through such setting, can make plasma bag 8 keep the gesture of relatively stable in the second end removal process of the terminal second fixed establishment 32 centre gripping plasma bag 8 of empty bag transfer device 4, reduce plasma bag 8 and shake the risk that and drop by a wide margin. It is understood that the link arm b415 connected to the proximal end of the first link arm b414 may also be a solid link arm whose two ends are pivotally connected to the first rotating shaft 412 and the second rotating shaft 413 respectively; in addition, two sets of links may be provided only on one side of the articulated robot arm, but such stability is not as good as the stability of two sets of links provided on both sides of the articulated robot arm.

As shown in fig. 13, two servo motors d419 are fixed to the two mounting brackets c411, respectively. An 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 connecting rod assembly comprises a rocker b417 and a connecting rod b418, wherein the first end of the rocker b417 is pivotally connected with the first rotating shaft 412, the output shaft of another servo motor d419 is in driving connection with the first end of the rocker b417, the first end of the connecting rod b418 is pivotally connected with the second end of the rocker b417, the second end of the connecting rod b418 is pivotally connected with the second connecting arm b414, and the length between the position where the second end of the connecting rod b418 is connected with the second connecting arm b414 and the proximal end of the second connecting arm b414 is equal to the length of the rocker b 417.

By such an arrangement, the pivoting 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. Two servo motors d419 are respectively fixed to two mounting brackets c411, so that the inertia of the multi-joint mechanical arm in the moving process can be reduced, and the flexibility and the precision 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 not be equal to the length of the rocker b417, so that the relationship between the rotation angle of the connecting arm b414 and the corresponding angle of the 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 the corresponding angle.

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

By the telescopic rod 432 of the cylinder d431 extending and retracting, the crank 433 rotates counterclockwise by approximately 90 °, and the second fixing mechanism 32 rotates counterclockwise by 90 °, so that the plasma bag 8 clamped by the second fixing mechanism 32 is hooked on the hanging needle 534 on the left side of the empty bag draining device 5. The catch mechanism d322 on the second securing mechanism 32 releases the plasma bag 8, after which the empty bag transfer device 4 moves back to the initial position (the position shown in fig. 13).

It should be noted that, in another possible arrangement, the driving mechanism a43 may be replaced by a servo motor disposed on the connecting frame 42, an output shaft of the servo motor is connected to an 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 to the hanging needle 534 at 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 a plurality of sliding assemblies, but the empty bag transfer device has a large volume and weight, and the empty bag transfer device has a high degree of operational flexibility and accuracy.

As shown in fig. 14 to 18 and with reference to the orientation shown in fig. 14, the empty bag draining device 5 includes a rack 51, an endless conveyor mechanism provided on the rack 51, and a plurality of substantially horizontally extending hanging pins 534 provided on the left and right sides of the rack 51. The annular conveying mechanism is used for driving the hanging needle 534 to circularly move on the left side and the right side of the bracket 51, so that the empty plasma bag 8 is hooked on the hanging needle 534 on the left side of the bracket 51 and is taken down after moving to the right side of the bracket 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 track 531 provided on the support 51, sixteen moving members 532 engaged with the endless slide track 531, and a driving mechanism that drives the moving members 532 to move relative to the endless slide track 531. At least one pair of rollers 5321 is arranged on each moving member 532, each pair of rollers 5321 straddles two sides of the annular slide track 531, and a hanging needle 534 is fixedly connected to each moving member 532. The driving mechanism includes two driving wheels (such as a driving sprocket 5331 and a driven sprocket 5332) disposed on the bracket 51 and an endless chain 5333 supported on the two driving wheels, the 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) disposed on the bracket 51. The motor drives the driving sprocket 5331 to rotate, the endless chain 5333 rotates along with the rotation of the driving sprocket 5331, so as to drive the moving member 532 to move around the endless sliding track 531, so that the moving member 532 on the left side of the rack 51 moves to the right side of the rack 51, and the hanging needle 534 on the left side of the rack 51 and the plurality of empty plasma bags hung thereon move together to the right side of the rack 51.

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

As shown in fig. 18, during use, the telescopic rod of the air cylinder e5424 extends, the connecting rod f5425 moves rightwards along with the telescopic rod, the force applied to the second end of the first rod section 54231 by the second end (left end) of the connecting rod f5425 causes the first rod section 54231 to generate clockwise rotation around the rotating shaft of the first rod section 54231 and the sliding block d5422, and the force applied to the second end of the second rod section 54232 by the bag withdrawing plate 541 under the action of gravity causes the first rod section 54231 to generate clockwise rotation around the rotating shaft of the first rod section 54231 and the sliding block d 5422. The first rod section 54231, the second rod section 54232 and the bag withdrawing plate 541 are subjected to clockwise torque to rotate around the rotating shafts of the first rod section 54231 and the sliding block d5422 by a certain angle, so that the bag withdrawing plate 541 moves downwards from the initial position to enable the groove 5411 on the bag withdrawing plate to straddle the corresponding hanging needle 534 (namely, the hanging needle 534 is positioned in the corresponding groove 5411), and then the sliding block d5422 continues to move rightwards along the linear sliding rail 5421 along with the continuous extension of the telescopic rod of the air cylinder e5424, so that the bag withdrawing plate 541 pushes the empty plasma bag 8 on the hanging needle 534 positioned on the right side of the support 51, and the empty plasma bag 8 is separated from the hanging needle 534 and collected to the bag receiving platform 15. Then, the telescopic rod of the air cylinder e5424 retracts, the connecting rod f5425 moves leftwards along with the retracting rod, the acting force of the second end (left end) of the connecting rod f5425 on the second end of the first rod section 54231 causes the first rod section 54231 to generate a torque around the rotating shaft of the first rod section 54231 and the sliding block d5422 anticlockwise, the torque and the second end acting force of the bag withdrawing plate 541 on the second rod section 54232 under the action of gravity cause the first rod section 54231 to generate a torque around the rotating shaft of the sliding block d5422 clockwise and are equal, 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 sliding block d5422 stops moving, and as the telescopic rod of the cylinder e5424 retracts, the acting force of the second end (left end) of the connecting rod f5425 on the second end of the first rod section 54231 causes the first rod section 54231 to generate a torque around the rotating shaft of the sliding block d 54231 anticlockwise and increases, and the bag withdrawing plate 541 anticlockwise rotates around the sliding block d5422 anticlockwise and causes the bag withdrawing plate, The first rod segment 54231 and the second rod segment 54232 rotate counterclockwise around the rotation axis of the first rod segment 54231 and the slider d 5422. When the second lever segment 54232 rotates counterclockwise to a position corresponding to the proximity switch 5426, the proximity switch 5426 is triggered, the air cylinder e5424 stops, and the bag returning plate 541 is maintained at the initial position.

With this arrangement, the movement of the bag returning plate 541 is skillfully realized, so that the bag returning plate 541 can smoothly remove the empty plasma bag 8 from the hanging needle 534 and smoothly return the bag returning plate 541. By setting the bag withdrawing mechanism to the above-described structure, the number of the driving devices is simplified, and the removal of the empty plasma bag 8 is facilitated. The empty bag transfer device 4 hooks the empty plasma bag 8 to the hanging needle 534 on the left side of the empty bag draining device 5, and after the empty plasma bag 8 is hung on the hanging needle 534 on the left side of the empty bag draining device 5, the annular conveying mechanism moves the hanging needle 534 on the left side to the right side, and the hanging needle 534 on the left side moves to the left side, so that the empty bag transfer device 4 can continue to hook the empty plasma bag 8 to the hanging needle 534 of the plasma bag 8 which is not hung. When the empty plasma bag 8 on the right hanging needle 534 is drained, the bag withdrawing mechanism removes the empty plasma bag 8 on the right hanging needle 534 from the corresponding hanging needle 534, so that the empty plasma bag 8 can be continuously hung to drain the plasma in the empty plasma bag 8.

It should be noted that the cylinder e5424 may be set to be opposite to the direction in fig. 18, that is, the cylinder e5424 is entirely located at the right side of the connecting rod f5425, during the retraction of the telescopic rod of the cylinder e5424, the bag withdrawing plate 541 is moved rightward to remove the empty plasma bag 8 on the hanging needle 534 at the right side of the bracket 51, and during the extension of the telescopic rod of the cylinder e5424, the bag withdrawing plate 541 is moved leftward to be restored. The link e5423 can also be provided as a straight rod, and the second end (left end) of the link f5425 is pivotally connected between two ends of the link e5423, and the link f5425 intersects with the link e 5423. In addition, the linear slide rail 5421 may be replaced by a linear slide groove, and the slide block d5422 is slidably connected with the linear slide groove. In addition, the empty bag draining device 5 may only include one bag returning mechanism, and the bag returning plate is provided with grooves equal to the number of the hanging needles 534 on the right side of the bracket 51.

In another possible embodiment, instead of the proximity switch 5426, a stop member may be provided on the bracket 51 to limit the second lever segment 54232 from further pivoting when it is pivoted against the clock to its initial position.

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

It should be noted that each of the cylinders may be replaced with a linear motor. Because the cylinder is under the dead condition of card, gaseous still can further compression, consequently be difficult to damage, the reliability is higher to the cylinder weight is lighter, can be less the weight of each device, and then improves the action precision.

In another possible embodiment, the empty bag draining device may not include a bag withdrawal mechanism, and the drained empty plasma bag is manually removed from the needle.

In another possible embodiment, the empty bag draining device may also comprise only a bracket and a plurality of hanging needles fixed on the bracket.

So far, the technical solutions of the present invention have 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 the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.

Claims (10)

1. A bag breaking device for a plasma bag breaking machine, the bag breaking device being for breaking an opening in a plasma bag, characterized in that the plasma bag breaking machine further comprises a separating device arranged downstream of the bag breaking device for breaking out plasma clumps in the plasma bag from the opening,

the bag cutting device comprises a clamping mechanism, a first cutter and a second cutter, wherein the clamping mechanism is used for moving the plasma bag to the separation device, the first cutter and the second cutter are arranged on a moving path of the plasma bag, so that the lower surface of the plasma bag forms a first cut along a first direction under the action of the first cutter and forms a second cut along a second direction under the action of the second cutter in the moving process of the plasma bag;

wherein the first direction and the second direction intersect, the first cut and the second cut forming the opening.

2. The bag striping apparatus of claim 1, wherein the travel path comprises a first path and a second path, the clamping mechanism comprises a first clamping mechanism for moving the plasma bag along the first path and a second clamping mechanism for moving the plasma bag along the second path,

the first cutter is disposed on the first path and the second cutter is disposed on the second path.

3. A bag scoring device according to claim 1, wherein the first blade comprises a first blade carrier and a plurality of first blades, each first blade being adapted to form one of the first cuts in one of the plasma bags;

the second cutter comprises a second blade holder and at least one second blade for making at least one second cut in all plasma bags.

4. A bag breaking device according to claim 1, characterized in that the first knife comprises a first knife holder and at least one first blade for making at least one first cut on all plasma bags;

the second cutter comprises a second blade holder and a plurality of second blades, each second blade for making one of the second cuts in one of the plasma bags.

5. A bag marking device as claimed in claim 3 or 4, characterized in that a first resilient member is connected between the first blade carrier and the first blade; and/or

A second resilient member is connected between the second blade carrier and the second blade.

6. The bag dividing device according to claim 5, wherein a vertical first sliding groove is formed in the first knife rest, a first sliding block connected with the first sliding groove in a sliding manner is arranged in the first sliding groove, and the first blade is fixedly connected with the first sliding block; and/or

The second knife rest is provided with a vertical second sliding groove, a second sliding block in sliding connection with the second sliding groove is arranged in the second sliding groove, and the second blade is fixedly connected with the second sliding block.

7. A bagging apparatus according to claim 2, wherein the first blade and the second blade are both ceramic blades.

8. A bagging apparatus according to any one of claims 1 to 4, wherein the first direction is perpendicular to the second direction.

9. A bag scoring device according to claim 8, wherein the first direction is along the length of the plasma bag and the second direction is along the width of the plasma bag.

10. A bag opener according to claim 2, in which the second holding means is fixedly connected to the separating device.

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