Secondary weighing mechanism of plasma component separator

Abstract

The utility model relates to the technical field of plasma separation, and discloses a secondary weighing mechanism of a plasma component separator, which comprises a first weighing device and a second weighing device, according to the secondary weighing mechanism of the plasma component separator, through two-time automatic weighing and automatic comparison of the controller, full automation of secondary weighing of the plasma component separator is achieved, the efficiency of the weighing procedure is improved, the possibility of errors caused by manual reading and manual calculation is eliminated, and the yield of products is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of plasma separation, in particular to a secondary weighing mechanism of a plasma component separator. Background Art

[0002] Currently, the existing PP dialyzers are weighed before water filling (hereinafter referred to as the first-stage weighing) using an electronic scale, and the weighed weight is manually written on the scale. The product is then filled with water, air-tested, squeezed out, and dried, and then weighed again using an electronic scale after drying (hereinafter referred to as the second-stage weighing). The difference between the first-stage weighing and the second-stage weighing is manually compared. If the difference is below 0g, the drying is complete.

[0003] However, this process is currently entirely manual, resulting in heavy workload and low detection efficiency. The first weighing step requires manual reading and handwriting of the dialyzer weight, which is subject to errors and can affect subsequent process decisions. The second weighing step requires manual, instant calculation of the dialyzer weight difference, which is also subject to errors and can result in the leakage of partially dried product. Consequently, manual operation is labor-intensive and labor costs are high, while detection efficiency is low and test results are prone to errors. Utility Model Content

[0004] The purpose of the utility model is to provide a secondary weighing mechanism for a plasma component separator, realize full automation of the secondary weighing of the plasma component separator, improve the efficiency of the weighing process, eliminate the possibility of errors in manual reading and manual calculation, and improve the yield rate of the product.

[0005] In order to achieve the above-mentioned object, the utility model provides a secondary weighing mechanism of a plasma component separator, comprising:

[0006] a first weighing device, the first weighing device comprising a first frame, a first conveyor belt for loading and a second conveyor belt for unloading being arranged in a collinear manner within the first frame, a first identification station and a first weighing station being sequentially arranged at the ends of the first conveyor belt, a first identification device being arranged within the first identification station, a first transfer mechanism being arranged below the first conveyor belt, the first transfer mechanism comprising a first lifting arm that can move horizontally and vertically, the first lifting arm being used to sequentially transfer the plasma component separator to the first identification station and the first weighing station, the first identification device and the first weighing device sequentially performing label scanning and overall weighing on the plasma component separator, a material unloading manipulator being arranged behind the first identification device for transferring the plasma component separator from the weighing station to the second conveyor belt;

[0007] a second weighing device, wherein the second weighing device comprises a second frame, wherein a third conveyor belt and a fourth conveyor belt are arranged in parallel in the second frame, wherein the third conveyor belt passes through the second frame, and a second identification station and a second weighing station are sequentially arranged above the third conveyor belt, wherein a second identification device is arranged in the second identification station, and a second transfer mechanism is arranged below the third conveyor belt, and the second transfer mechanism comprises a second lifting arm which can move horizontally and vertically, and the second lifting arm is used to sequentially transfer the plasma component separator to the second identification station and the second weighing station, wherein the second identification device and the second weighing device sequentially perform label scanning and overall weighing on the plasma component separator, and a defective product rejection robot is arranged behind the second identification device to transfer defective plasma component separators to the fourth conveyor belt;

[0008] a controller electrically connected to the first identification device, the second identification device, the first weighing device, and the second weighing device

[0009] Compared with the prior art, the secondary weighing mechanism of the plasma component separator of the embodiment of the present invention has the following beneficial effects: the first weighing mechanism includes a first frame, the first conveyor belt extends into the first frame to send the plasma component separator into the first frame, the end of the first conveyor belt is provided with a first identification station and a first weighing station, the first identification station identifies the label of the plasma component separator, the first weighing station weighs the identified plasma component separator, and the obtained weight is recorded by the controller; wherein the plasma component separator is driven by the lifting device at the bottom to enter the first identification station and the first weighing station in sequence, and the plasma component separator after being weighed leaves the first weighing station by the clamping of the unloading robot and reaches the second conveyor belt for the first weighing; the dried plasma component separator reaches the second weighing mechanism, and the second weighing mechanism includes a second mechan The third conveyor belt extends into the second quarter to send the plasma component separator into the second rack. The end of the third conveyor belt is sequentially provided with a second identification mechanism and a second weighing mechanism. After the plasma component separator is identified by the second identification mechanism, it enters the second weighing mechanism for weighing. The obtained weight is compared with the value of the first weighing in the controller. After comparison, if the secondary weighing weight - the primary weighing weight ≤ 0g is a good product, the good product is directly sent out of the second rack for unloading through the third conveyor belt, while the defective products greater than 0g are clamped by the defective product rejection robot and sent to the fourth conveyor belt for collection; the secondary weighing mechanism of the plasma component separator of the present application realizes the full automation of the secondary weighing of the plasma component separator through two automated weighings and automated comparison of the controller, thereby improving the efficiency of the weighing process, eliminating the possibility of errors in manual reading and manual calculation, and improving the yield rate of the product.

[0010] The secondary weighing mechanism of the plasma component separator of an embodiment of the utility model, the first identification station and the second identification station both include a lower positioning wheel to fix the plasma component separator, the first identification device and the second identification device both include a first vertical cylinder, the first vertical cylinder is connected to an upper positioning wheel and a scanner, the upper positioning wheel can drive the plasma component separator to rotate, the lower positioning wheel is arranged below the upper positioning wheel, and the scanner is arranged toward the lower positioning wheel.

[0011] The secondary weighing mechanism of the plasma component separator of an embodiment of the utility model, the first weighing station and the second weighing station both include a vertically arranged weighing arm, one end of the weighing arm extends to the bottom of the first conveyor belt or the third conveyor belt and is connected to an electronic scale, the other end of the weighing arm extends to above the first conveyor belt or the third conveyor belt, and the top of the weighing arm is provided with a groove for accommodating the plasma component separator.

[0012] The secondary weighing mechanism of the plasma component separator of the embodiment of the utility model is that the unloading robot is connected to a second vertical cylinder and a first horizontal cylinder, the second vertical cylinder drives the unloading robot to move up and down, and the first horizontal cylinder drives the unloading robot to move horizontally along the moving direction of the second conveyor belt.

[0013] The secondary weighing mechanism of the plasma component separator of the embodiment of the utility model, the defective product rejection robot is connected to a third vertical cylinder and a second horizontal cylinder, the third vertical cylinder drives the defective product rejection robot to move up and down, and the second horizontal cylinder drives the defective product rejection robot to move horizontally between the third conveyor belt and the fourth conveyor belt along a moving direction perpendicular to the third conveyor belt.

[0014] The secondary weighing mechanism of the plasma component separator of the embodiment of the present invention, the first transplanting mechanism and the second transplanting mechanism both include a fourth vertical cylinder and a third horizontal cylinder, the fourth vertical cylinder drives the first lifting arm or the second lifting arm to move in the vertical direction to send the plasma component separator into or out of the identification station and the weighing station, and the third horizontal cylinder drives the first lifting arm or the second lifting arm to move in the vertical direction to transport the plasma component separator between the identification station and the weighing station.

[0015] The secondary weighing mechanism of the plasma component separator of the embodiment of the utility model, the first transplanting mechanism includes at least four first lifting arms, and every two first lifting arms are symmetrically arranged at both ends of the width direction of the first conveyor belt;

[0016] The second transfer mechanism includes at least four second lifting arms, and every two second lifting arms are symmetrically arranged at both ends of the width direction of the third conveyor belt.

[0017] In the secondary weighing mechanism of the plasma component separator of the embodiment of the present utility model, the first lifting arm or the second lifting arm is fixed to a horizontally arranged fixed plate, and the fixed plate is connected to the fourth vertical cylinder and the third horizontal cylinder.

[0018] The secondary weighing mechanism of the plasma component separator of the embodiment of the present utility model, the controller includes multiple industrial computers and operation panels, and the industrial computers and operation panels are both provided on the first rack and the second rack.

[0019] In the secondary weighing mechanism of the plasma component separator of the embodiment of the present invention, a plurality of fixed positions are provided on the first conveyor belt, the second conveyor belt and the third conveyor belt for fixing the plasma component separator, and the distance between each of the positions is equal.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of a first weighing device of a secondary weighing mechanism of a plasma component separator according to an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the interior of the first weighing device of the secondary weighing mechanism of the plasma component separator according to an embodiment of the present utility model;

[0023] Figure 3 This is a schematic diagram of the interior of the second weighing device of the secondary weighing mechanism of the plasma component separator according to an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of a first identification device of a secondary weighing mechanism of a plasma component separator according to an embodiment of the present utility model;

[0025] Figure 5 Schematic diagram of a weighing arm of a secondary weighing mechanism of a plasma component separator according to an embodiment of the present invention;

[0026] Figure 6 It is a schematic diagram of a feeding manipulator of a secondary weighing mechanism of a plasma component separator according to an embodiment of the present utility model;

[0027] Figure 7 This is a schematic diagram of a defective product rejection robot of a secondary weighing mechanism of a plasma component separator according to an embodiment of the present utility model;

[0028] Figure 8 It is a schematic diagram of the first transplanting mechanism of the secondary weighing mechanism of the plasma component separator according to an embodiment of the present utility model;

[0029] Figure 9 Schematic diagram of the first lifting arm of the secondary weighing mechanism of the plasma component separator according to an embodiment of the present invention; DETAILED DESCRIPTION

[0030] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0031] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0032] In the description of this utility model, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0033] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0034] like Figure 1 and Figure 2 As shown, a secondary weighing mechanism of a plasma component separator 3 according to a preferred embodiment of the present invention includes a first weighing device 1 and a second weighing device 2 .

[0035] like Figure 2As shown, the first weighing device 1 includes a first frame 11, a first conveyor belt 12 for loading and a second conveyor belt 13 for unloading are arranged in a collinear manner in the first frame 11, a first identification station 14 and a first weighing station 15 are arranged at the end of the first conveyor belt 12 in sequence, a first identification device is arranged in the first identification station 14, a first transfer mechanism 16 is arranged below the first conveyor belt 12, the first transfer mechanism 16 includes a first lifting arm 161 that can be moved horizontally and vertically, the first lifting arm 161 is used to sequentially deliver the plasma component separator 3 to the first identification station 14 and the first weighing station 15, the first identification device and the first weighing station 15 sequentially perform label scanning and overall weighing on the plasma component separator 3, and a unloading station is arranged behind the first identification device. The manipulator 17 is used to transport the plasma component separator 3 from the weighing station to the second conveyor belt 13; the first conveyor belt 12 extends into the first frame 11 to transport the plasma component separator 3 into the first frame 11, and the end of the first conveyor belt 12 is provided with a first identification station 14 and a first weighing station 15. The first identification station 14 identifies the label of the plasma component separator 3, and the first weighing station 15 weighs the identified plasma component separator 3, and the obtained weight is recorded by the controller; the plasma component separator 3 is driven by the lifting device at the bottom to enter the first identification station 14 and the first weighing station 15 in sequence. After being weighed, the plasma component separator 3 is clamped by the unloading manipulator 17 and leaves the first weighing station 15 to reach the second conveyor belt 13 for the first weighing.

[0036] like Figure 3As shown, the second weighing device 2 includes a second frame 21, and a third conveyor belt 22 and a fourth conveyor belt 23 are arranged in parallel in the second frame 21. The third conveyor belt 22 runs through the second frame 21. A second identification station 24 and a second weighing station 25 are arranged above the third conveyor belt 22 in sequence. The second identification station 24 has a second identification device. A second transfer mechanism 26 is arranged below the third conveyor belt 22. The second transfer mechanism 26 includes a second lifting arm 261 that can move horizontally and vertically. The second lifting arm 261 is used to sequentially transport the plasma component separator 3 to the second identification station 24 and the second weighing station 25. The second identification device and the second weighing station 25 sequentially scan the labels and weigh the plasma component separator 3. A defective product rejection robot 27 is arranged behind the second identification device to transport the defective products of the plasma component separator 3 to the fourth conveyor belt 23. The dried plasma component separator 3 arrives at the second weighing mechanism, and the second weighing mechanism includes The second frame 21 includes a third conveyor belt 22, which extends into the second frame 21 to send the plasma component separator 3 into the second frame 21. The end of the third conveyor belt 22 is sequentially provided with a second identification station 24 and a second weighing station 25. After the plasma component separator 3 is identified by the second identification station 24, it enters the second weighing station 25 for weighing. The obtained weight is compared with the value of the first weighing in the controller. After comparison, if the secondary weighing weight - the primary weighing weight ≤ 0g is a good product, the good product is directly sent out of the second frame 21 for unloading through the third conveyor belt 22, while the defective products greater than 0g are clamped by the defective product rejection robot 27 and sent to the fourth conveyor belt 23 for collection; the secondary weighing mechanism of the plasma component separator 3 of the present application realizes the full automation of the secondary weighing of the plasma component separator 3 through two automated weighings and automated comparison of the controller, thereby improving the efficiency of the weighing process, eliminating the possibility of errors in manual reading and manual calculation, and improving the yield rate of the product.

[0037] The controller is electrically connected to the first identification device, the second identification device, the first weighing device 1 and the second weighing device 2. Specifically, the controller includes an industrial computer.

[0038] like Figure 2 and Figure 4As shown, in some embodiments of the present invention, the first identification station 14 and the second identification station 24 both include a lower positioning wheel 4 to secure the plasma component separator 3, and the first conveyor belt 12 conveys the plasma component separator 3 to the lower positioning wheel 4. The first and second identification devices both include a first vertical cylinder 41 connected to an upper positioning wheel 42 and a scanner 43. The upper positioning wheel 42 can drive the plasma component separator 3 to rotate, and the lower positioning wheel 4 is disposed below the upper positioning wheel 42, with the scanner 43 facing the lower positioning wheel 4. During operation, the plasma component separator 3 is moved into the lower positioning wheel 4, and the first vertical cylinder 41 drives the upper positioning wheel 42 to move downward to abut the plasma component separator 3. The upper positioning wheel 42 drives the plasma component separator 3 to rotate until its label faces the scanner 43. The scanner 43 scans the label of the plasma component separator 3 to complete the identification process. The identification process is automated, improving identification efficiency.

[0039] like Figure 5 As shown, in some embodiments of the present invention, the first weighing station 15 and the second weighing station 25 each include a vertically arranged weighing arm 5, one end of which extends to the bottom of the first conveyor belt 12 or the third conveyor belt 22 and is connected to an electronic scale 51, which is located directly below the first conveyor belt 12 or the third conveyor belt 22; the other end of the weighing arm 5 extends above the first conveyor belt 12 or the third conveyor belt 22, and the top of the weighing arm 5 is provided with a first groove 52 for accommodating the plasma component separator 3. After the plasma component separator 3 is driven horizontally by the first lifting arm 161 or the second lifting arm 261 to move above the first groove, the first lifting arm 161 or the second lifting arm 261 is lowered to place the plasma component separator 3 in the first groove 52 for weighing. The weighing process is automated, improving weighing efficiency and accuracy.

[0040] like Figure 6 As shown, in some embodiments of the present invention, the unloading robot 17 is connected to a second vertical cylinder 71 and a first horizontal cylinder 72. The second vertical cylinder 71 drives the unloading robot 17 to move up and down, while the first horizontal cylinder 72 drives the unloading robot 17 to move horizontally along the movement direction of the second conveyor belt 13. A clamping claw 73 is provided at the bottom of the unloading robot 17. Under the action of the second vertical cylinder 71, the unloading robot 17 approaches the plasma component separator 3 in the first weighing station 15. The clamping claw 73 clamps the plasma component separator 3. The second vertical cylinder 71 then carries the plasma component separator 3 out of the first weighing station 15. The first horizontal cylinder 72 drives the plasma component separator 3 to the second conveyor belt 13. The unloading robot 17 enables the plasma component separator 3 to move between the first conveyor belt 12 and the second conveyor belt 13, thereby improving the overall automation level of the device.

[0041] like Figure 7 As shown, in some embodiments of the present invention, the defective product rejection robot 27 is connected to a third vertical cylinder 74 and a second horizontal cylinder 75. The third vertical cylinder 74 drives the defective product rejection robot 27 up and down, while the second horizontal cylinder 75 drives the defective product rejection robot 27 horizontally between the third conveyor belt 22 and the fourth conveyor belt 23 in a direction perpendicular to the movement of the third conveyor belt 22. A gripper 73 is also provided at the bottom of the defective product rejection robot 27. Under the action of the third vertical cylinder 74, the defective product rejection robot 27 approaches the defective plasma component separator 3 in the second weighing station 25. The gripper 73 clamps the plasma component separator 3. The third vertical cylinder 74 then removes the plasma component separator 3 from the second weighing station 25. The second horizontal cylinder 75 drives the plasma component separator 3 to the fourth conveyor belt 23. The unloading robot 17 enables the movement of the defective plasma component separator 3 between the third conveyor belt 22 and the fourth conveyor belt 23, thereby improving the overall automation level of the device.

[0042] like Figure 8 As shown, in some embodiments of the present invention, the first transfer mechanism 16 and the second transfer mechanism 26 each include a fourth vertical cylinder 61 and a third horizontal cylinder 62. The fourth vertical cylinder 61 drives the first lifting arm 161 or the second lifting arm 261 to move vertically to transport the plasma component separator 3 to or from the identification station and the weighing station. The third horizontal cylinder 62 drives the first lifting arm 161 or the second lifting arm 261 to move vertically to transport the plasma component separator 3 between the identification station and the weighing station. The end of the lifting arm is also provided with a second groove 162 for accommodating the plasma component separator 3, so that the plasma component separator 3 remains stable during lifting and horizontal movement.

[0043] like Figure 2 As shown, in some embodiments of the present invention, the first transfer mechanism 16 includes at least four first lifting arms 161, with two first lifting arms 161 symmetrically disposed at opposite ends of the first conveyor belt 12 in the width direction. The second transfer mechanism 26 includes at least four second lifting arms 261, with two second lifting arms 261 symmetrically disposed at opposite ends of the third conveyor belt 22 in the width direction. The two first lifting arms 161 and the second lifting arms 261 support the plasma component separator 3 on either side of the conveyor belt, ensuring that the plasma component separator 3 remains stable during transport. The provision of at least four first lifting arms 161 or second lifting arms 261 enables the first transfer mechanism 16 or the second transfer mechanism 26 to transfer multiple plasma component separators 3 at a time, thereby improving transport efficiency.

[0044] like Figure 8As shown, in some embodiments of the present invention, the first lifting arm 161 or the second lifting arm 261 is fixed to a horizontally arranged fixing plate 63, and the fixing plate 63 is connected to the fourth vertical cylinder 61 and the third horizontal cylinder 62. The fixing plate 63 is arranged in a cross shape with multiple extensions, and can connect multiple first lifting arms 161 or second lifting arms 261, so that the movement of the multiple first lifting arms 161 or second lifting arms 261 is synchronized, thereby improving the transfer efficiency.

[0045] like Figure 1 As shown, in some embodiments of the present invention, the controller includes multiple industrial computers 8 and operation panels 9. Industrial computers 8 and operation panels 9 are provided on the first rack 11 and the second rack 21. The industrial computers 8 are controlled by the operation panels 9 to realize the visualization of defective product detection and the storage of a large amount of weighing data, thereby improving the automation of the product line.

[0046] like Figure 1 As shown, in some embodiments of the present invention, a plurality of fixed positions 121 are provided on the first conveyor belt 12, the second conveyor belt 13 and the third conveyor belt 22 for fixing the plasma component separator 3. The distance between each fixed position 121 is equal, so that the transport interval of the plasma component separator 3 transported by each conveyor belt is reasonable, and the plasma component separator 3 will not roll on the conveyor belt to cause errors.

[0047] The working process of the utility model is as follows: the first conveyor belt 12 extends into the first frame 11 to send the plasma component separator 3 into the first frame 11, and the first identification station 14 and the first weighing station 15 are provided at the end of the first conveyor belt 12. The first identification station 14 identifies the label of the plasma component separator 3, and the first weighing station 15 weighs the identified plasma component separator 3, and the obtained weight is recorded by the controller; wherein the plasma component separator 3 is driven by the lifting device at the bottom to enter the first identification station 14 and the first weighing station 15 in sequence, and the weighed plasma component separator 3 is clamped by the unloading manipulator 17 and leaves the first weighing station 15 to reach the second conveyor belt 13 for the first weighing unloading; after drying The plasma component separator 3 arrives at the second weighing device 2, which includes a second frame 21. The third conveyor belt 22 extends into the second frame to send the plasma component separator 3 into the second frame 21. The end of the third conveyor belt 22 is successively provided with a second identification station 24 and a second weighing station 25. After the plasma component separator 3 is identified by the second identification station 24, it enters the second weighing station 25 for weighing. The obtained weight is compared with the value of the first weighing in the controller. After comparison, if the second weighing weight - the first weighing weight ≤ 0g is a good product, the good product is directly sent out of the second frame 21 through the third conveyor belt 22 for unloading, and the defective products greater than 0g are clamped by the defective product rejection robot 27 and sent to the fourth conveyor belt 23 for collection.

[0048] In summary, the embodiment of the present invention provides a secondary weighing mechanism for a plasma component separator 3, which realizes full automation of the secondary weighing of the plasma component separator 3 through two automated weighings and automated comparison of the controller, thereby improving the efficiency of the weighing process, eliminating the possibility of errors in manual reading and manual calculation, and improving the yield rate of the product.

[0049] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and replacements can be made without departing from the technical principles of the present invention. These improvements and replacements should also be regarded as the scope of protection of the present invention.

Claims

1. A secondary weighing mechanism for a plasma component separator, characterized in that: include: a first weighing device, the first weighing device comprising a first frame, a first conveyor belt for loading and a second conveyor belt for unloading being arranged in a collinear manner within the first frame, a first identification station and a first weighing station being sequentially arranged at the ends of the first conveyor belt, a first identification device being arranged within the first identification station, a first transfer mechanism being arranged below the first conveyor belt, the first transfer mechanism comprising a first lifting arm that can move horizontally and vertically, the first lifting arm being used to sequentially transfer the plasma component separator to the first identification station and the first weighing station, the first identification device and the first weighing device sequentially performing label scanning and overall weighing on the plasma component separator, a material unloading manipulator being arranged behind the first identification device for transferring the plasma component separator from the weighing station to the second conveyor belt; a second weighing device, wherein the second weighing device comprises a second frame, wherein a third conveyor belt and a fourth conveyor belt are arranged in parallel in the second frame, wherein the third conveyor belt passes through the second frame, and a second identification station and a second weighing station are sequentially arranged above the third conveyor belt, wherein a second identification device is arranged in the second identification station, and a second transfer mechanism is arranged below the third conveyor belt, and the second transfer mechanism comprises a second lifting arm which can move horizontally and vertically, and the second lifting arm is used to sequentially transfer the plasma component separator to the second identification station and the second weighing station, wherein the second identification device and the second weighing device sequentially perform label scanning and overall weighing on the plasma component separator, and a defective product rejection robot is arranged behind the second identification device to transfer defective plasma component separators to the fourth conveyor belt; A controller is electrically connected to the first identification device, the second identification device, the first weighing device and the second weighing device.

2. The secondary weighing mechanism of the plasma component separator according to claim 1, characterized in that: The first identification station and the second identification station both include a lower positioning wheel to fix the plasma component separator, and the first identification device and the second identification device both include a first vertical cylinder, which is connected to an upper positioning wheel and a scanner. The upper positioning wheel can drive the plasma component separator to rotate, and the lower positioning wheel is arranged below the upper positioning wheel, and the scanner is arranged toward the lower positioning wheel.

3. The secondary weighing mechanism of the plasma component separator according to claim 1, characterized in that: The first weighing station and the second weighing station both include a vertically arranged weighing arm, one end of the weighing arm extends to the bottom of the first conveyor belt or the third conveyor belt and is connected to an electronic scale, the other end of the weighing arm extends above the first conveyor belt or the third conveyor belt, and a groove is provided on the top of the weighing arm to accommodate the plasma component separator.

4. The secondary weighing mechanism of the plasma component separator according to claim 1, characterized in that: The unloading robot is connected to a second vertical cylinder and a first horizontal cylinder. The second vertical cylinder drives the unloading robot to move up and down, and the first horizontal cylinder drives the unloading robot to move horizontally along the moving direction of the second conveyor belt.

5. The secondary weighing mechanism of the plasma component separator according to claim 1, characterized in that: The defective product rejection robot is connected to a third vertical cylinder and a second horizontal cylinder. The third vertical cylinder drives the defective product rejection robot to move up and down, and the second horizontal cylinder drives the defective product rejection robot to move horizontally between the third conveyor belt and the fourth conveyor belt along a moving direction perpendicular to the third conveyor belt.

6. The secondary weighing mechanism of the plasma component separator according to claim 1, characterized in that: The first transplanting mechanism and the second transplanting mechanism both include a fourth vertical cylinder and a third horizontal cylinder. The fourth vertical cylinder drives the first lifting arm or the second lifting arm to move in the vertical direction to send the plasma component separator into or out of the identification station and the weighing station. The third horizontal cylinder drives the first lifting arm or the second lifting arm to move in the vertical direction to transport the plasma component separator between the identification station and the weighing station.

7. The secondary weighing mechanism of the plasma component separator according to claim 6, characterized in that: The first transplanting mechanism includes at least four first lifting arms, and every two first lifting arms are symmetrically arranged at both ends of the first conveyor belt in the width direction; The second transfer mechanism includes at least four second lifting arms, and every two second lifting arms are symmetrically arranged at both ends of the width direction of the third conveyor belt.

8. The secondary weighing mechanism of the plasma component separator according to claim 6, characterized in that: The first lifting arm or the second lifting arm is fixed to a horizontally arranged fixing plate, and the fixing plate is connected to the fourth vertical cylinder and the third horizontal cylinder.

9. The secondary weighing mechanism of the plasma component separator according to claim 1, characterized in that: The controller includes a plurality of industrial computers and operation panels, and the first rack and the second rack are both provided with the industrial computers and operation panels.

10. The secondary weighing mechanism of the plasma component separator according to claim 1, characterized in that: The first conveyor belt, the second conveyor belt and the third conveyor belt are provided with a plurality of fixed positions for fixing the plasma component separator, and the distance between each of the positions is equal.

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