Center tube dispensing mechanism of plasma separation cup

Abstract

The utility model discloses a central tube dispensing mechanism of a plasma separation cup. The central tube dispensing mechanism comprises a rack, a rotary clamping assembly, a limiting assembly and a dispensing valve, wherein the rotary clamping assembly, the limiting assembly and the dispensing valve are respectively mounted on the rack; the limiting assembly is located above the rotary clamping assembly. The rotary clamping assembly comprises a mounting plate mounted on the rack, and a clamping finger cylinder and a rotary driving device which are respectively mounted on the mounting plate; the output end of the clamping finger cylinder is arranged upwards; the rotary driving device can be used for driving the clamping finger cylinder to rotate horizontally; the limiting assembly comprises a front-back driving device installed on the machine frame, a limiting finger air cylinder connected to the output end of the front-back driving device in a front-back moving mode, two first bearings installed on two air claws of the limiting finger air cylinder respectively, and a second bearing installed on a cylinder body of the limiting finger air cylinder. According to the utility model, the uniformity of glue can be ensured when the central tube is dispensed, so that the assembling qualification rate of the subsequent central tube and the static head is ensured.

Description

Technical Field

[0001] The utility model relates to the field of glue dispensing mechanisms, in particular to a glue dispensing mechanism for a central tube of a plasma separation cup. Background Art

[0002] Currently, plasma separation cups are a key method for separating blood components using centrifugal principles in modern biomedical engineering. The basic principle is that a plasma separator drives the plasma separation cup at high speed, allowing for the non-invasive separation of plasma, blood cells, and other components within the cup. The blood components are then collected. Furthermore, after separation, the remaining plasma and blood cells must be returned to the cup, and the cup emptied to facilitate the next cycle of collection and separation, or to complete the entire collection process.

[0003] For the plasma separation cup, authorization announcement number CN203139212U discloses a plasma separation cup with an umbrella-shaped central tube. It specifically discloses a stationary head, a sealing bowl, a sealing gasket, a sealing ring, a cup cover, an upper cover, a cup body, a cup core, a blood inlet, a plasma outlet and a central tube. The cup cover, the sealing ring, the sealing gasket and the sealing bowl are sequentially installed on the upper cover and then slidably fitted into the stationary head. The central tube has an umbrella-shaped surface to form an umbrella-shaped central tube. The umbrella surface is located below the upper cover, and the gap between the umbrella surface and the upper cover forms a plasma overflow channel. The top end of the umbrella-shaped central tube is reliably welded to the stationary head.

[0004] Although in the plasma separation cup with an umbrella-shaped central tube, the central tube and the stationary head are connected by welding, in other existing technologies, the top of some central tubes are connected to the stationary head by glue. If you want to connect the top of the central tube and the stationary head by glue, you need to first use a glue dispensing mechanism to dispense glue on the top of the central tube before you can install the stationary head. However, there are still some problems with the current glue dispensing mechanism. For example, the current glue dispensing mechanism generally uses three triangularly distributed and rolling bearings to limit the upper end of the central tube during the glue dispensing process, and one of the bearings is an active bearing with a power source. The active bearing can drive the central tube to rotate by friction with the side of the central tube, so that the glue dispensing valve can easily spray glue on the top of the central tube. However, when driving the center tube with this solution, the active bearing only uses the friction between it and the center tube to drive the center tube to rotate. That is, the center tube is not completely clamped between the bearings at this time. This method will make the center tube easily "slip" during the rotation process, resulting in uneven glue dispensing on the center tube, which will increase the assembly failure of the center tube and the stationary head.

[0005] Therefore, there is a need to improve the existing technology. Utility Model Content

[0006] In view of the problems existing in the above-mentioned prior art, the purpose of the present invention is to provide a central tube dispensing mechanism for a plasma separation cup, which can ensure the uniformity of glue when dispensing glue on the central tube, thereby ensuring the subsequent qualified rate of assembly of the central tube and the stationary head.

[0007] In order to achieve the above purpose, the technical solution of the utility model is:

[0008] A central tube dispensing mechanism for a plasma separation cup comprises a frame and a rotary clamping assembly, a limit assembly and a dispensing valve respectively mounted on the frame; the limit assembly is located above the rotary clamping assembly; the rotary clamping assembly comprises a mounting plate mounted on the frame and a clamping finger cylinder and a rotary drive device respectively mounted on the mounting plate; the output end of the clamping finger cylinder is arranged upward; the rotary drive device can be used to drive the clamping finger cylinder to rotate horizontally; the rotary clamping assembly can use the clamping finger cylinder to clamp the lower end of the central tube, and use the The rotary drive device drives the clamping finger cylinder and the center tube to rotate synchronously. The limiting assembly includes a front-to-rear drive device mounted on the frame, a limiting finger cylinder movably connected to the output end of the front-to-rear drive device, two first bearings mounted on the two air claws of the limiting finger cylinder, and a second bearing mounted on the cylinder body of the limiting finger cylinder. The first and second bearings cooperate to limit the upper end of the center tube. The dispensing valve is located above the limiting assembly and is used to spray glue onto the top of the center tube. This arrangement ensures uniform glue spraying on the center tube during dispensing.

[0009] Furthermore, the device further comprises a push assembly; the mounting plate is movable up and down; the push assembly comprises a push drive device and a push plate; the push drive device is mounted on the frame, and its output end is connected to the mounting plate; the push plate is mounted on the cylinder body of the clamping finger cylinder and is located between the two air claws of the clamping finger cylinder. This arrangement facilitates the upward movement of the central tube.

[0010] Furthermore, the pushing drive device is a cylinder.

[0011] Furthermore, the rotary drive device includes a rotary motor, a driving wheel, a driven wheel, and a turntable; the rotary motor is mounted on the mounting plate; the driving wheel is mounted on the output shaft of the rotary motor; the driven wheel and the turntable are respectively mounted on the mounting plate and arranged coaxially therebetween, with the driven wheel meshing with the driving wheel; and the clamping finger cylinder is mounted on the turntable. This arrangement allows the rotary motor to easily drive the clamping finger cylinder to rotate.

[0012] Furthermore, the second bearing is provided with one; the two first bearings and the second bearing are arranged in a triangular pattern, and an insertion area for inserting the central tube is formed between the two first bearings and the second bearing. This arrangement facilitates positioning of the upper end of the central tube.

[0013] Furthermore, a clamping block is mounted on each of the two air claws of the clamping finger cylinder, and an arc-shaped slot corresponding to the central tube is provided on the opposite side of the two clamping blocks. The above arrangement enables the clamping finger cylinder to stably clamp the central tube.

[0014] Furthermore, the front and rear driving devices are cylinders.

[0015] Furthermore, the dispensing valve is arranged at an angle.

[0016] The beneficial effects of the utility model are:

[0017] The utility model utilizes the clamping finger cylinder in the rotary clamping assembly to clamp the center tube, forcing the center tube to rotate synchronously when the clamping finger cylinder is driven by the rotary motor to rotate, that is, the center tube will not "slip" during the rotation process. In addition, the limit assembly is used to limit the upper end of the center tube, which can prevent it from deflecting, thereby greatly ensuring the uniformity of glue when the dispensing valve is dispensing, thereby ensuring the qualified rate of subsequent assembly of the center tube and the stationary head. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the rotary clamping assembly and the limit assembly before acting on the central tube. Figure 1 ;

[0019] Figure 2 This is a schematic diagram of the overall structure of the rotary clamping assembly and the limit assembly before acting on the central tube. Figure 2 ;

[0020] Figure 3 This is a schematic diagram of the overall structure of the utility model when the rotating clamping assembly and the limiting assembly act on the central tube. Figure 1 ;

[0021] Figure 4 This is a schematic diagram of the overall structure of the utility model when the rotating clamping assembly and the limiting assembly act on the central tube. Figure 2 ;

[0022] Figure 5 This is a schematic diagram of the local structure of the utility model Figure 1 ;

[0023] Figure 6 This is a schematic diagram of the local structure of the utility model Figure 2 .

[0024] Reference numerals

[0025] 1. Frame; 2. Rotary clamping assembly; 21. Mounting plate; 22. Clamping finger cylinder; 23. Rotating motor; 24. Driving wheel; 25. Driven wheel; 26. Turntable; 27. Clamping block; 28. Arc-shaped slot; 3. Limiting assembly; 31. Front and rear drive device; 32. Limiting finger cylinder; 33. First bearing; 34. Second bearing; 35. Insertion area; 4. Dispensing valve; 5. Pushing drive device; 6. Push plate; 7. Center tube. DETAILED DESCRIPTION

[0026] The utility model will be further described below with reference to the accompanying drawings and specific embodiments. The following description is merely illustrative and does not limit the scope of protection of the utility model.

[0027] like Figures 1-6 As shown, a central tube dispensing mechanism of a plasma separation cup includes a frame 1 and a rotary clamping assembly 2, a limiting assembly 3 and a dispensing valve 4 respectively mounted on the frame 1; the limiting assembly 3 is located above the rotary clamping assembly 2.

[0028] The rotary clamping assembly 2 includes a mounting plate 21 mounted on the frame 1, a clamping finger cylinder 22, and a rotary drive device, both mounted on the mounting plate 21. The output end of the clamping finger cylinder 22 is positioned upward, and the rotary drive device is used to drive the clamping finger cylinder 22 to rotate horizontally. Therefore, the rotary clamping assembly 2 can use the clamping finger cylinder 22 to clamp the lower end of the central tube 7, and the rotary drive device can drive the clamping finger cylinder 22 and the central tube 7 to rotate synchronously, preventing the central tube 7 from slipping during rotation.

[0029] like Figures 1-4As shown, in addition, the limiting assembly 3 includes a front and rear driving device 31 installed on the frame 1, a limiting finger cylinder 32 connected to the output end of the front and rear driving device 31 and movably connected to the front and rear, and two first bearings 33 respectively installed on the two air claws of the limiting finger cylinder 32 and a second bearing 34 installed on the cylinder body of the limiting finger cylinder 32; the first bearing 33 and the second bearing 34 can be used in conjunction to limit the upper end of the center tube 7 to prevent the center tube 7 from being skewed, and the front and rear driving device 31 can be used to drive the limiting finger cylinder 32 to move forward and backward, and the limiting finger cylinder 32 can be used to open or close the two first bearings 33.

[0030] The dispensing valve 4 is located above the limiting assembly 3 and can be used to spray glue, i.e., dispense glue, onto the top of the central tube 7 so that a stationary head (not shown) can be subsequently installed on the central tube 7 .

[0031] like Figures 1-4 As shown, the present invention also includes a push assembly; the mounting plate 21 is configured to be movable up and down; the push assembly includes a push drive 5 and a push plate 6; the push drive 5 is mounted on the frame 1 and its output end is connected to the mounting plate 21, that is, the push drive 5 can be used to drive the mounting plate 21 to move up and down; the push plate 6 is mounted on the cylinder body of the clamping finger cylinder 22 and is located between the two air claws of the clamping finger cylinder 22. The push drive 5 can be used to pull the mounting plate 21 up and down, and because the push plate 6 is mounted on the clamping finger cylinder 22, it can also move up and down synchronously with the clamping finger cylinder 22. As the push plate 6 rises, it can be used to push the center tube 7 upward. Since other parts that abut against the positioning jig (not shown in the figure) that is plugged into the center tube 7 are assembled in the center of the center tube 7 when the glue is dispensed, after the center tube 7 is pushed up by the push plate 6, the parts that abut against the positioning jig can be moved upward synchronously and separated from the positioning jig, so as to prevent these parts from rubbing against the positioning jig during the rotation of the center tube 7 and causing wear.

[0032] In this embodiment, the push driving device 5 is a cylinder. However, those skilled in the art will appreciate that the push driving device 5 can also be driven by a motor, which will not be described in detail here.

[0033] like Figure 2 、 Figure 4 and Figure 6As shown, in this embodiment, the rotary drive device includes a rotary motor 23, a driving wheel 24, a driven wheel 25, and a turntable 26. The rotary motor 23 is mounted on the mounting plate 21. The driving wheel 24 is mounted on the output shaft of the rotary motor 23. The driven wheel 25 and the turntable 26 are respectively mounted on the mounting plate 21 and are coaxially arranged therebetween, with the driven wheel 25 meshing with the driving wheel 24. The clamping finger cylinder 22 is mounted on the turntable 26. Therefore, with this arrangement, the rotary motor 23 can sequentially drive the driving wheel 24, the driven wheel 25, and the turntable 26, ultimately rotating the clamping finger cylinder 22 and simultaneously driving the center tube 7 to rotate.

[0034] like Figure 5 As shown, in this embodiment, a second bearing 34 is provided; the two first bearings 33 and the second bearing 34 are arranged in a triangular pattern, and an insertion area 35 for inserting the center tube 7 is formed between the two first bearings 33 and the second bearing 34. Therefore, by utilizing the triangular arrangement of the first bearing 33 and the second bearing 34, when the center tube 7 is inserted into the insertion area 35, the three bearings can be used to limit the center tube 7. It should be noted that the four sides of the center tube 7 are respectively in contact with the sides of the three bearings, so that when the clamping finger cylinder 22 drives the center tube 7 to rotate, the center tube 7 can also drive the three bearings to rotate synchronously, but the three bearings themselves have no power source. It can be seen that the first bearing 33 and the second bearing 34 are mainly used to limit the center tube 7 to prevent it from being skewed and affecting the dispensing process.

[0035] like Figure 6 As shown, in this embodiment, a clamping block 27 is mounted on each of the two air grippers of the clamping finger cylinder 22. On the opposing sides of the two clamping blocks 27, an arcuate retaining groove 28 is provided, corresponding to the center tube 7. Therefore, the provision of the arcuate retaining groove 28 allows the clamping finger cylinder 22 to more stably grip the center tube 7.

[0036] In this embodiment, the front and rear drive devices 31 are cylinders. However, those skilled in the art will appreciate that the front and rear drive devices 31 can also use motors as a driving source, which will not be further described herein.

[0037] like Figure 1 As shown, in this embodiment, the glue dispensing valve 4 is arranged at an angle, so that the glue can be sprayed out conveniently.

[0038] like Figures 1-4 As shown, in this embodiment, specifically, the limiting finger cylinder 32 is connected to the output end of the front and rear driving device 31 through a connecting plate (not marked in the figure).

[0039] like Figures 1-6As shown, in addition, in order to improve processing efficiency, the clamping finger cylinder 22, the limiting finger cylinder 32, the first bearing 33 and the second bearing 34 and other components can also be set to multiple, so that multiple workpieces can be processed simultaneously.

[0040] Since the dispensing valve 4 is a prior art, it will not be described in detail here.

[0041] The specific operating principle of the utility model is introduced below to facilitate understanding of the utility model:

[0042] First, a feeding mechanism (not shown) transports the central tube 7 assembled with components such as a sealing bowl and a sealing gasket to a preset position, and the central tube 7, sealing bowl, sealing gasket and other components are inserted into the positioning fixture of the feeding mechanism;

[0043] Next step: The push drive device 5 pulls the mounting plate 21 upward, driving the clamping finger cylinder 22 and the push plate 6 to move upward; during the upward movement of the push plate 6, the center tube 7 is pushed upward for a certain distance, so that the sealing bowl, sealing gasket and other components are separated from the positioning fixture (the center tube 7 does not need to be separated) to prevent them from being damaged by the positioning fixture during the rotation process;

[0044] Next, the clamping finger cylinder 22 uses the clamping block 27 to clamp the lower end of the central tube 7 to prevent it from "slipping" during rotation. At the same time, the front and rear drive devices 31 drive the limiting finger cylinder 32 to move forward until the upper end of the central tube 7 is inserted into the insertion area 35. Then, the limiting finger cylinder 32 drives the two first bearings 33 to close, so that the side edges of the first bearing 33 and the second bearing 34 respectively abut against the side edges of the upper end of the central tube 7, thus forming a limit for the upper end of the central tube 7 to prevent it from swinging during rotation.

[0045] Next step: the rotating motor 23 drives the clamping finger cylinder 22 to rotate through the driving wheel 24, the driven wheel 25 and the turntable 26, thereby driving the central tube 7 and other components to rotate synchronously. At the same time, the dispensing valve 4 sprays glue around the top of the central tube 7, i.e., dispensing glue;

[0046] Next step: After the dispensing is completed, the push drive device 5, the rotary clamping assembly 2 and the limit assembly 3 are reset, and the feeding mechanism sends the workpiece with the dispensing completed to the next process.

[0047] To sum up, the present invention utilizes the clamping finger cylinder 22 in the rotary clamping assembly 2 to clamp the center tube 7, forcing the center tube 7 to rotate synchronously when the clamping finger cylinder 22 is driven by the rotating motor 23, that is, the center tube 7 will not "slip" during the rotation process. In addition, the limiting assembly 3 on the upper end of the center tube 7 can prevent it from deflecting, thereby greatly ensuring the uniformity of the glue when the dispensing valve 4 is dispensing, thereby ensuring the subsequent assembly qualification rate of the center tube 7 and the stationary head (not shown in the figure).

[0048] The present invention is not limited to the above-mentioned embodiments. If various changes or modifications to the present invention do not depart from the spirit and scope of the present invention, and if these changes and modifications fall within the scope of the claims and equivalent technologies of the present invention, the present invention is also intended to include these changes and modifications.

Claims

1. A central tube dispensing mechanism for a plasma separation cup, characterized by: It comprises a frame and a rotary clamping assembly, a limit assembly and a dispensing valve respectively mounted on the frame; the limit assembly is located above the rotary clamping assembly; The rotary clamping assembly includes a mounting plate mounted on the frame, and a clamping finger cylinder and a rotary drive device respectively mounted on the mounting plate; the output end of the clamping finger cylinder is arranged upward; the rotary drive device can be used to drive the clamping finger cylinder to rotate horizontally; the rotary clamping assembly can use the clamping finger cylinder to clamp the lower end of the central tube, and use the rotary drive device to drive the clamping finger cylinder and the central tube to rotate synchronously; The limiting assembly includes a front-rear driving device mounted on the frame, a limiting finger cylinder connected to the output end of the front-rear driving device for forward and backward movement, two first bearings respectively mounted on two air claws of the limiting finger cylinder, and a second bearing mounted on the cylinder body of the limiting finger cylinder; the first bearing and the second bearing can cooperate to limit the upper end of the central tube; The dispensing valve is located above the limiting assembly and can be used to spray glue onto the top of the central tube.

2. The central tube dispensing mechanism of the plasma separation cup according to claim 1, characterized in that: It also includes a pushing assembly; the mounting plate is movable up and down; the pushing assembly includes a pushing drive device and a pushing plate; the pushing drive device is installed on the frame and its output end is connected to the mounting plate; the pushing plate is installed on the cylinder body of the clamping finger cylinder and is located between the two air claws of the clamping finger cylinder.

3. The central tube dispensing mechanism of the plasma separation cup according to claim 2, characterized in that: The pushing drive device is a cylinder.

4. The central tube dispensing mechanism of the plasma separation cup according to claim 1, characterized in that: The rotary drive device includes a rotary motor, a driving wheel, a driven wheel and a turntable; the rotary motor is mounted on the mounting plate; the driving wheel is mounted on the output shaft of the rotary motor; the driven wheel and the turntable are respectively mounted on the mounting plate and are coaxially arranged therebetween, and the driven wheel is meshed with the driving wheel; the clamping finger cylinder is mounted on the turntable.

5. The central tube dispensing mechanism of the plasma separation cup according to claim 1, characterized in that: The second bearing is provided with one; the two first bearings and the second bearing are distributed in a triangular manner, and an insertion area for inserting a central tube is formed between the two first bearings and the second bearing.

6. The central tube dispensing mechanism of the plasma separation cup according to claim 1, characterized in that: A clamping block is respectively installed on the two air claws of the clamping finger cylinder; and an arc-shaped clamping groove corresponding to the central tube is respectively provided on the opposite side of the two clamping blocks.

7. The central tube glue dispensing mechanism of the plasma separation cup according to claim 1, characterized in that: The front and rear driving devices are cylinders.

8. The central tube dispensing mechanism of the plasma separation cup according to claim 1, characterized in that: The dispensing valve is arranged obliquely.

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