Extrusion heat sealing device

Abstract

The present invention discloses an extrusion heat sealing device, comprising: a blood bag frame for accommodating a plurality of blood bags for component blood preparation; an extrusion mechanism comprising two groups arranged on opposite sides of the blood bag frame for providing a Y-direction extrusion function for the blood bags in the blood bag frame; and a heat sealing mechanism comprising a movable heat sealing end, a Z drive mechanism for driving the movable heat sealing end to reciprocate along the Z direction, and a fixed heat sealing end arranged on the side of the blood bag frame, wherein the movable heat sealing end cooperates with the fixed heat sealing end to provide an extrusion sealing and heat sealing function for the hose on the blood bag. 1) The device provided by the present invention includes both an extrusion part and a heat sealing part, and directly performs extrusion heat sealing on the blood bag bin, thereby reducing labor costs and the probability of operational errors. 2) The present invention loads the fixed end and the movable end of the heat sealing machine at different positions, and utilizes the fixed heat sealing end to cooperate with the blood bag bin to conveniently achieve extrusion sealing and heat sealing of the blood bag hose.

Description

Technical Field

[0001] The present invention relates to the field of blood product equipment, in particular to an extrusion heat sealing device. Background Art

[0002] Blood transfusion is an important clinical treatment, but whole blood is rarely transfused directly in clinical practice. Blood components are generally transfused. A blood component refers to a specific component of whole blood, such as red blood cells, platelets, or plasma. Voluntary donated blood is typically stored in blood bags. After centrifugation, the different densities of the different blood components cause stratification. A set of blood bags typically contains three to four bags, connected by tubing. Component preparation utilizes this stratification phenomenon after centrifugation to squeeze the different layers of blood components from the whole blood bag into other bags. To prevent the squeezed blood components from flowing back into the original whole blood bag, the tubing is heat-sealed using a heat sealer. To heat-seal the tubing, plastic tubing is placed in the sealing clamp of the heat sealer. The clamp generates a high-frequency alternating electromagnetic field, heating the plastic tubing and melting it. Once the plastic tubing has melted, the clamp is re-clamped, welding the melted sections together and sealing the tubing.

[0003] Currently, blood centers typically use extruders to prepare blood components, though some also use manual extrusion with platens. However, existing extruders are separate machines, requiring manual installation of the blood bag and removal after the extrusion process. Therefore, blood centers need to equip themselves with a range of standalone equipment, including centrifuges, extruders, and heat sealers.

[0004] To improve efficiency, this patented device incorporates an integrated extrusion and heat-sealing mechanism that works in conjunction with the blood bag chamber designed in other patents. During operation, a set of blood bags is loaded into the chamber. Subsequent operations are performed within the automated instrument. For example, a robotic arm grasps the blood bag chamber, transfers it to a centrifuge, and then transfers it to the patented extrusion and heat-sealing mechanism for extrusion and heat-sealing.

[0005] The extrusion heat sealing mechanism is mainly used to squeeze the layered blood components in the whole blood bag after centrifugation into different transfer bags (sub-bags), and the heat sealing mechanism seals the pipelines between the sub-bags. Usually, there are extrusion separators with the same function on the market, but all extrusion separators are separate instruments that can only be operated on blood bags. This means that after the blood bag is centrifuged, it is necessary to manually take out the blood bag and put it into the extrusion separator, which has high labor costs and the probability of errors. The extrusion heat sealing mechanism of the present invention is aimed at the blood bag bin, which is controlled by a conveyor belt and a robotic arm and passes through a leveling scale, a centrifuge, and an extrusion heat sealing mechanism in succession. Frequent loading is not required, which reduces labor costs and the probability of erroneous operations. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide an extrusion heat sealing device in view of the deficiencies in the above-mentioned prior art.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is: an extrusion heat sealing device, comprising:

[0008] a blood bag frame for accommodating a plurality of blood bags for blood component preparation;

[0009] a squeezing mechanism, comprising two groups arranged on opposite sides of the blood bag frame, for providing a Y-direction squeezing function on the blood bag in the blood bag frame;

[0010] And a heat sealing mechanism, which includes a movable heat sealing end, a Z driving mechanism for driving the movable heat sealing end to reciprocate along the Z direction, and a fixed heat sealing end arranged on the side of the blood bag frame. The movable heat sealing end cooperates with the fixed heat sealing end to provide extrusion sealing and heat sealing functions for the hose on the blood bag.

[0011] Preferably, the extrusion mechanism includes a Y linear slide, a bracket connected to a slider of the Y linear slide, a plurality of push rods connected to the bracket, and an extrusion plate connected to the ends of the push rods and located inside the blood bag frame.

[0012] Preferably, a color sensor is further provided on the inner side of the upper portion of the extrusion plate.

[0013] Preferably, the extrusion heat sealing device also includes a mounting plate, a mounting frame arranged on the side of the blood bag frame, and a Y drive mechanism arranged on the mounting frame for driving the mounting plate to move linearly along the Y direction, and the Z drive mechanism is arranged on the mounting plate.

[0014] Preferably, the Z drive mechanism includes a base arranged on the mounting plate, a heat-sealing slider slidably arranged on the base along the Z direction, a connecting rod connected to the heat-sealing slider and with its bottom end passing through and extending under the mounting plate, and a Z displacement module for driving the heat-sealing slider to move up and down along the Z direction, and the movable heat-sealing end is connected to the bottom of the connecting rod.

[0015] Preferably, the Z displacement module includes a support frame connected to the base, an electric push rod arranged on the support frame, a guide seat connected to the base, a guide sleeve arranged on the guide seat, and a guide rod connected to the output rod of the electric push rod and slidably inserted in the guide sleeve, and the bottom end of the guide rod is connected to the heat-sealing slider.

[0016] Preferably, a slot-type optical coupler is provided on the support frame, and an optical coupler baffle that cooperates with the slot-type optical coupler is provided on the guide rod.

[0017] Preferably, the Y drive mechanism includes a Y slide rail, a Y slider arranged on the Y slide rail, a Y motor, a Y screw connected to the output shaft of the Y motor, a Y nut ​​fitted on the Y screw and connected to the Y slider, and the mounting plate is connected to the Y nut.

[0018] Preferably, the extrusion heat sealing device further comprises a blood bag bin for being arranged in cooperation with the blood bag frame, the blood bag bin comprising a shell and a hose fixing mechanism;

[0019] The housing has a plurality of chambers for receiving blood bags, and the hose fixing mechanism is provided with a hose groove for fixing the hose on the blood bag and a heat sealing groove for performing an extrusion operation in the upper and lower directions of the hose to seal the hose or performing an extrusion heat sealing operation to seal the hose;

[0020] After the blood bag bin is loaded into the blood bag frame, the heat sealing groove of the hose fixing mechanism is located above the fixed heat sealing end. By driving the movable heat sealing end downward to move above the heat sealing groove, the hose in the heat sealing groove can be squeezed to block the hose or squeezed and heat-sealed to seal the hose.

[0021] Preferably, a positioning slot is provided at the lower portion of the outer wall of the shell, a positioning block is provided inside the blood bag frame, and a ball plunger is provided on the positioning block for cooperating with the positioning slot.

[0022] The beneficial effects of the present invention are:

[0023] 1) The device provided by the present invention includes both an extrusion part and a heat-sealing part, and directly extrudes and heat-seals the blood bag bin, thereby reducing labor costs and the probability of operational errors.

[0024] 2) The present invention places the fixed end and the movable end of the heat sealer at different positions. The fixed heat seal end cooperates with the blood bag bin to conveniently achieve extrusion sealing and heat sealing of the blood bag hose.

[0025] 3) The present invention is capable of monitoring the position and movement trend of the blood stratification interface in real time by providing a color sensor, thereby enabling automated control of blood bag squeezing. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Schematic diagram of the structure of the extrusion heat sealing device of the present invention (without the blood bag chamber);

[0027] Figure 2 A schematic structural diagram of the extrusion heat sealing device of the present invention from another perspective;

[0028] Figure 3 It is a structural schematic diagram of the heat sealing mechanism of the present invention;

[0029] Figure 4 This is a schematic structural diagram of the blood bag bin of the present invention;

[0030] Figure 5 This is a schematic structural diagram of the blood bag bin of the present invention from another perspective;

[0031] Figure 6 It is a structural schematic diagram of the hose fixing mechanism of the present invention;

[0032] Figure 7 This is a schematic structural diagram of the extrusion heat sealing device of the present invention (loaded into the blood bag bin);

[0033] Figure 8 The present invention is a flow chart of an extrusion heat sealing device for whole blood preparation in one embodiment.

[0034] Description of reference numerals:

[0035] 1—blood bag frame; 10—positioning block; 11—ball plunger;

[0036] 2—extrusion mechanism; 20—Y linear slide; 21—bracket; 22—push rod; 23—extrusion plate; 24—color sensor;

[0037] 3—heat sealing mechanism; 30—Z driving mechanism; 31—movable heat sealing end; 32—fixed heat sealing end; 33—base; 34—heat sealing slider; 35—connecting rod; 36—Z displacement module; 360—support frame; 361—electric push rod; 362—guide seat; 363—guide sleeve; 364—guide rod; 365—slotted optical coupler; 366—optical coupler baffle;

[0038] 4—Y drive mechanism; 40—mounting plate; 41—mounting frame; 42—Y slide rail; 43—Y slider; 44—Y motor; 45—Y screw rod; 46—Y nut;

[0039] 5—blood bag compartment;

[0040] 6—housing; 60—maintenance liquid compartment; 61—transfer bag compartment; 62—whole blood bag compartment; 63—opening; 64—positioning slot;

[0041] 7—holding frame; 70—weight compartment; 71—first push plate; 72—first guide shaft; 73—second push plate; 74—second guide shaft;

[0042] 8—hose fixing mechanism; 80—fixing plate; 81—hose fixing unit; 82—hose groove; 83—heat sealing groove. DETAILED DESCRIPTION

[0043] The present invention is further described in detail below with reference to the embodiments so that those skilled in the art can implement the invention with reference to the description.

[0044] It should be understood that terms such as “having”, “including” and “comprising” used herein do not preclude the existence or addition of one or more other elements or combinations thereof.

[0045] Example 1

[0046] like Figure 1-7 As shown, an extrusion heat sealing device of this embodiment includes:

[0047] A blood bag frame 1, which is used to accommodate a number of blood bags for blood component preparation;

[0048] The squeezing mechanism 2 includes two groups arranged on opposite sides of the blood bag frame 1, and is used to provide a Y-direction squeezing function for the blood bag in the blood bag frame 1;

[0049] And the heat sealing mechanism 3, which includes a movable heat sealing end 31, a Z driving mechanism 30 for driving the movable heat sealing end 31 to reciprocate along the Z direction, and a fixed heat sealing end 32 arranged on the side of the blood bag frame 1. The movable heat sealing end 31 cooperates with the fixed heat sealing end 32 to provide extrusion sealing and heat sealing functions for the hose on the blood bag.

[0050] In a preferred embodiment, the extrusion mechanism 2 includes a Y-shaped linear slide 20, a bracket 21 connected to the slider of the Y-shaped linear slide 20, four push rods 22 connected to the bracket 21, and an extrusion plate 23 connected to the ends of the push rods 22 and located within the blood bag frame 1. The slider of the Y-shaped linear slide 20 drives the extrusion plate 23 to move via the four push rods 22 to achieve the extrusion action.

[0051] In a preferred embodiment, a color sensor 24 is further provided on the inner side of the upper portion of the squeezing plate 23. The color sensor 24 is used to monitor the color change of the blood bag to control the squeezing process, which will be described in detail later.

[0052] In a preferred embodiment, the extrusion heat-sealing device further includes a mounting plate 40, a mounting bracket 41 disposed on the side of the blood bag frame 1, and a Y-drive mechanism 4 disposed on the mounting bracket 41 for driving the mounting plate 40 to linearly move in the Y direction. The Z-drive mechanism 30 is disposed on the mounting plate 40. In a further preferred embodiment, the Z-drive mechanism 30 includes a base 33 disposed on the mounting plate 40, a heat-sealing slider 34 slidably disposed on the base 33 in the Z direction, a connecting rod 35 connected to the heat-sealing slider 34 and having its bottom end passing through and extending below the mounting plate 40, and a Z displacement module 36 for driving the heat-sealing slider 34 to move up and down in the Z direction. The movable heat-sealing end 31 is connected to the bottom of the connecting rod 35. The Z displacement module 36 includes a support frame 360 ​​connected to the base 33, an electric push rod 361 disposed on the support frame 360, a guide seat 362 connected to the base 33, a guide sleeve 363 disposed on the guide seat 362, and a guide rod 364 connected to the output rod of the electric push rod 361 and slidably inserted into the guide sleeve 363. The bottom end of the guide rod 364 is connected to the heat sealing slider 34. The electric push rod 361 extends or contracts, thereby driving the heat sealing slider 34 to move up and down through the guide rod 364, ultimately achieving the up and down movement of the movable heat sealing end 31.

[0053] In a preferred embodiment, a slotted optical coupler 365 is provided on the support frame 360, and an optical coupler baffle 366 is provided on the guide rod 364 to cooperate with the slotted optical coupler 365. The cooperation between the slotted optical coupler 365 and the optical coupler baffle 366 realizes the positioning of the upper and lower positions of the movable heat sealing end 31.

[0054] In a preferred embodiment, the Y drive mechanism 4 includes a Y slide rail 42, a Y slider 43 arranged on the Y slide rail 42, a Y motor 44, a Y screw rod 45 connected to the output shaft of the Y motor, a Y nut ​​46 that is fitted on the Y screw rod and connected to the Y slider 43, and the mounting plate 40 is connected to the Y nut ​​46.

[0055] In a preferred embodiment, the extrusion heat sealing device further comprises a blood bag bin 5 for being matched with and arranged in the blood bag frame 1, the blood bag bin 5 comprising a shell 6 and a hose fixing mechanism 8;

[0056] The housing 6 has a plurality of chambers for loading blood bags. The hose fixing mechanism 8 is provided with a hose groove 82 for fixing the hose on the blood bag and a heat sealing groove for performing an extrusion operation in the upper and lower directions to seal the hose or performing an extrusion heat sealing operation to seal the hose.

[0057] After the blood bag bin 5 is loaded into the blood bag frame 1, the heat sealing groove of the hose fixing mechanism 8 is above the fixed heat sealing end 32. By driving the movable heat sealing end 31 downward to above the heat sealing groove, the hose in the heat sealing groove can be squeezed to seal the hose or squeezed and heat-sealed to seal the hose.

[0058] Among them, electrode blocks are provided on both the movable heat-sealing end 31 and the fixed heat-sealing end 32. When the two electrode blocks are squeezed against each other, they can temporarily clamp the hose by pressure to temporarily seal the hose. The two electrode blocks can also generate a high-frequency electromagnetic field to melt and heat-seal the plastic hose sandwiched in the middle, thereby achieving heat sealing of the hose.

[0059] Reference Figure 4-7 In a further preferred embodiment, a maintenance fluid reservoir 60, a transfer bag reservoir 61, and a whole blood bag reservoir 62 are sequentially arranged inside the housing 6 along the X direction. A holding frame 7 is fixedly disposed inside the housing 6. A first push plate 71 and a second push plate 73 are connected to both sides of the holding frame 7, respectively, and are slidable in the X direction. The cavity inside the holding frame 7 forms the transfer bag reservoir 61, the cavity between the holding frame 7 and the first push plate 71 forms the maintenance fluid reservoir 60, and the cavity between the holding frame 7 and the second push plate 73 forms the whole blood bag reservoir 62. Openings 63 are provided on both sides of the housing 6 along the X direction. The maintenance fluid reservoir 60, the transfer bag reservoir 61, and the whole blood bag reservoir 62 are used to respectively accommodate the maintenance fluid bag, the transfer bag, and the whole blood bag in the triple blood bag.

[0060] Among them, the maintenance liquid bag, transfer bag and whole blood bag are each connected to a branch pipeline, and the three branch pipelines are connected through a main pipe.

[0061] In a further preferred embodiment, a weight bin 70 is further provided on the retaining frame 7 .

[0062] The first push plate 71 is connected to the first side of the holding frame 7 via a plurality of first guide shafts 72, allowing it to slide along the X-direction. The second push plate 73 is connected to the second side of the holding frame 7 via a plurality of second guide shafts 74, allowing it to slide along the X-direction. Return springs are mounted on each of the first and second guide shafts 72, 74. Both the first and second push plates 71, 73 are made of transparent material to facilitate observation of the color within the whole blood bag and control of bag squeezing.

[0063] The two squeezing plates 23 are used to apply thrust to the first pushing plate 71 and the second pushing plate 73 respectively, so as to squeeze the blood bag.

[0064] The hose fixing member includes a fixing plate 80 rotatably mounted on the housing 6 and three hose fixing units 81 mounted on the fixing plate 80. The hose fixing unit 81 includes a hose groove 82 formed on the fixing plate 80, a heat-sealing groove 83 formed on the flexible groove and extending vertically through the fixing plate 80, and two hose fixing block groups positioned at either end of the hose groove 82. The heat-sealing groove 83 forms a heat-sealing area for extrusion heat-sealing the hose. The hose fixing block group includes two fixing blocks symmetrically arranged on either side of the hose groove 82. The inner center portions of the fixing blocks protrude outward to form a raised portion. A hose slot is formed between the two raised portions on the two opposing fixing blocks in the hose fixing block group. The width of the hose slot is smaller than the diameter of the hose. The fixing plate 80 is connected to the housing 6 via a hinge.

[0065] During use, the branch lines of the maintenance fluid bag, transfer bag, and whole blood bag are each secured by a hose fixing unit 81. The branch lines are manually pressed into the hose grooves 82, with portions of the branch lines positioned within the heat-sealing grooves 83. The main line is positioned away from the heat-sealing grooves 83 and hose grooves 82. Because the width between the hose slots is smaller than the diameter of the hose, the two sets of hose fixing blocks at the head and tail can secure the branch lines well, facilitating compression and heat-sealing of the branch lines within the heat-sealing grooves 83.

[0066] A positioning slot 64 is provided at the lower portion of the outer wall of the housing 6 , and a positioning block 10 is provided inside the blood bag frame 1 . The positioning block 10 is provided with a ball plunger 11 for cooperating with the positioning slot 64 .

[0067] The following is combined with Figure 8 The main process of whole blood preparation using the extrusion heat sealing device is described, which specifically includes the following steps:

[0068] 1. First, place the blood bag 5 in a centrifuge and centrifuge (during this process, weights of different weights are placed in the weight compartment 70 to balance the blood bag 5 to achieve the centrifugal prerequisite) so that the whole blood in the blood bag is separated into layers, with the upper layer being plasma (yellow) and the lower layer being red blood cells (red);

[0069] 2. The Y-drive mechanism 4 drives the mounting plate 40 and the Z-drive mechanism 30 to move leftward. The blood bag reservoir 5 is then placed into the blood bag frame 1. The ball plunger 11 on the positioning block 10 engages and pushes into the positioning slot 64 of the housing 6 to position the blood bag reservoir 5. The branch lines for the maintenance fluid bag, transfer bag, and whole blood bag are respectively installed on the three hose fixing units 81. After the blood bag reservoir 5 is installed, the Y-drive mechanism 4 drives the mounting plate 40 and the Z-drive mechanism 30 to move rightward, so that the heat seal groove is between the movable heat seal end 31 and the fixed heat seal end 32.

[0070] 3. The movable heat-sealing end 31 corresponding to the hose fixing unit 81 where the branch line of the maintenance fluid bag is located moves downward, cooperating with the fixed heat-sealing end 32 below to compress and temporarily seal the branch line of the maintenance fluid bag in the heat-sealing groove. Then, a squeezing plate 23 applies a Y-direction thrust to the second push plate 73 to squeeze the whole blood bag, so that all the plasma in the upper layer of the whole blood bag is squeezed into the transfer bag. During this process, the color sensor 24 can detect a critical point. That is, when the color sensor 24 detects the appearance of red substance (red blood cells) in the branch line of the whole blood bag, squeezing stops.

[0071] 4. The movable heat-sealing end 31 corresponding to the hose fixing unit 81 where the branch line of the transfer bag is located moves downward, cooperating with the fixed heat-sealing end 32 below to compress and temporarily seal the branch line of the transfer bag in the heat-sealing groove. Then, another squeezing plate 23 applies a Y-direction thrust to the first push plate 71 to squeeze the maintenance solution bag, squeezing all the maintenance solution into the whole blood bag, thereby obtaining a red blood cell maintenance solution mixture in the whole blood bag.

[0072] 5. The movable heat-sealing end 31 and the fixed heat-sealing end 32 on the three hose fixing units 81 are pressed tightly, and the three pairs of electrode blocks all work to generate a high-frequency electromagnetic field, so that the hose sandwiched between the movable heat-sealing end 31 and the fixed heat-sealing end 32 is melted and heat-sealed. The Y drive mechanism 4 drives the mounting plate 40 and the Z drive mechanism 30 to move to the left, and the blood bag bin 5 is taken out. Then, the maintenance solution bag, transfer bag and whole blood bag are taken out from the blood bag bin 5 to complete the whole blood preparation. The first push plate 71 and the second push plate 73 are reset under the action of the reset spring.

[0073] When the present invention is used, a set of blood bags is loaded into the blood bag bin 5, and a series of subsequent operations can be automated, such as a robotic arm grabbing the blood bag bin 5 and centrifuging it in a centrifuge, and then grabbing the blood bag bin 5 into the blood bag frame 1 for squeezing and heat-sealing the tube. In the traditional solution, an extrusion separator is used to squeeze the layered blood components in the whole blood bag after centrifugation into different transfer bags (sub-bags). The extrusion separator can only operate on blood bags, which means that after the blood bag is centrifuged, it is necessary to manually take out the blood bag and load it into the extrusion separator, which has a high labor cost and the probability of error. The present invention is directed to the blood bag bin 5 to perform operations such as balancing, centrifugation, extrusion and heat sealing, and does not require frequent loading, thereby reducing labor costs and the probability of erroneous operations.

[0074] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to specific details.

Claims

1. An extrusion heat sealing device, characterized in that: include: a blood bag frame for accommodating a plurality of blood bags for blood component preparation; a squeezing mechanism, comprising two groups arranged on opposite sides of the blood bag frame, for providing a Y-direction squeezing function on the blood bag in the blood bag frame; and a heat-sealing mechanism comprising a movable heat-sealing end, a Z-driving mechanism for driving the movable heat-sealing end to reciprocate along the Z direction, and a fixed heat-sealing end provided on the side of the blood bag frame, wherein the movable heat-sealing end cooperates with the fixed heat-sealing end to provide extrusion sealing and heat-sealing functions for the hose on the blood bag; The extrusion heat sealing device also includes a blood bag bin for being matched with and arranged in the blood bag frame, and the blood bag bin includes a shell and a hose fixing mechanism; The housing has a plurality of chambers for receiving blood bags, and the hose fixing mechanism is provided with a hose groove for fixing the hose on the blood bag and a heat sealing groove for performing an extrusion operation in the upper and lower directions of the hose to seal the hose or performing an extrusion heat sealing operation to seal the hose; After the blood bag bin is loaded into the blood bag frame, the heat sealing groove of the hose fixing mechanism is located above the fixed heat sealing end. By driving the movable heat sealing end downward to move above the heat sealing groove, the hose in the heat sealing groove can be squeezed to block the hose or squeezed and heat-sealed to seal the hose.

2. The extrusion heat sealing device according to claim 1, characterized in that: The squeezing mechanism includes a Y linear slide, a bracket connected to a slider of the Y linear slide, a plurality of push rods connected to the bracket, and a squeezing plate connected to the ends of the push rods and located inside the blood bag frame.

3. The extrusion heat sealing device according to claim 2, characterized in that: A color sensor is also provided on the inner side of the upper portion of the extrusion plate.

4. The extrusion heat sealing device according to claim 2, characterized in that: The extrusion heat sealing device also includes a mounting plate, a mounting frame arranged on the side of the blood bag frame, and a Y drive mechanism arranged on the mounting frame for driving the mounting plate to move linearly along the Y direction. The Z drive mechanism is arranged on the mounting plate.

5. The extrusion heat sealing device according to claim 4, characterized in that: The Z drive mechanism includes a base arranged on the mounting plate, a heat-sealing slider slidably arranged on the base along the Z direction, a connecting rod connected to the heat-sealing slider and with its bottom end passing through and extending under the mounting plate, and a Z displacement module for driving the heat-sealing slider to move up and down along the Z direction, and the movable heat-sealing end is connected to the bottom of the connecting rod.

6. The extrusion heat sealing device according to claim 5, characterized in that: The Z displacement module includes a support frame connected to the base, an electric push rod arranged on the support frame, a guide seat connected to the base, a guide sleeve arranged on the guide seat, and a guide rod connected to the output rod of the electric push rod and slidably inserted in the guide sleeve, and the bottom end of the guide rod is connected to the heat-sealing slider.

7. The extrusion heat sealing device according to claim 6, characterized in that: The support frame is provided with a slot-type optical coupler, and the guide rod is provided with an optical coupler baffle that matches the slot-type optical coupler.

8. The extrusion heat sealing device according to claim 6, characterized in that: The Y drive mechanism includes a Y slide rail, a Y slider arranged on the Y slide rail, a Y motor, a Y screw connected to the output shaft of the Y motor, a Y nut ​​fitted on the Y screw and connected to the Y slider, and the mounting plate is connected to the Y nut.

9. The extrusion heat sealing device according to claim 1, characterized in that: A positioning slot is provided at the lower portion of the outer wall of the shell, a positioning block is provided inside the blood bag frame, and a ball plunger is provided on the positioning block for cooperating with the positioning slot.

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