Automatic cap covering machine for blood collection tubes and covering device

Abstract

The utility model relates to an automatic cap covering machine for blood collection tubes and a covering device, and solves the technical problems that the existing automatic cap covering equipment based on a negative pressure adsorption mode is stable and reliable in operation and low in working efficiency. The device comprises a vibration disc, a supporting plate, a frame, a tray bearing device, a cap separation device, a Y-axis direction linear module, a sliding plate, a lifting mechanism and a covering device, the sliding plate is connected with the Y-axis direction linear module, the lifting mechanism is connected with the sliding plate, and the covering device is connected with the lifting mechanism. The covering device comprises a top plate, a connecting plate, a bottom plate, a front plate, a left side plate, a right side plate, a traction rod connecting plate, a traction rod movement driving air cylinder, a first Z-axis direction guide rail assembly, a second Z-axis direction guide rail assembly and a plurality of traction rods. The automatic capping device is widely applied to the technical field of automatic capping of blood collection tubes.

Description

Technical Field

[0001] This utility model relates to the field of clinical blood testing technology, and more specifically, to an automatic capping machine for blood collection tubes and a capping device. Background Technology

[0002] In the field of clinical hematology testing technology, capping blood collection tubes is an essential step in the storage of remaining blood after blood testing in various departments of hospital laboratories. The structure of the blood collection tubes and caps can be referenced in two utility model patents: CN217365863U (a pressure-type cap for blood collection tubes) and CN216569952U (a utility model tube for clinical testing).

[0003] The capping process is mainly done manually, which presents the following technical problems: low work efficiency, high labor costs, high labor intensity for operators, strict operating procedures for operators, and the risk of blood infection to operators in the event of accidents such as rupture of blood collection tubes.

[0004] The cap consists of a hollow cylindrical outer shell made of plastic and a rubber stopper with a groove.

[0005] Currently, there are also automatic capping devices that replace manual labor for automated operations. Referring to invention patent application CN115648116 A and utility model patent CN220182728U, an automatic capping device based on negative pressure adsorption is disclosed. However, the negative pressure adsorption method has high requirements for sealing; if the sealing is insufficient, the cap may not be picked up, affecting the stable and reliable operation of the equipment and its operational efficiency. Summary of the Invention

[0006] This invention aims to solve the technical problem that existing automatic capping devices based on negative pressure adsorption may fail to pick up caps due to insufficient sealing, thus affecting the stable and reliable operation and work efficiency of the equipment. It provides an automatic capping machine for blood collection tubes with higher stability and reliability, as well as a capping device.

[0007] In a first aspect, this utility model provides an automatic capping machine for blood collection tubes, comprising a vibratory plate, a support plate, a frame, a tray-bearing device, a first X-axis guide rail assembly, a second X-axis guide rail assembly, a cap-separating device, a Y-axis linear module, a sliding plate, and a lifting mechanism. The frame is fixedly connected to the support plate via columns, the cap-separating device is connected to the support plate, the first X-axis guide rail assembly and the second X-axis guide rail assembly are fixedly connected side-by-side to the support plate, the tray-bearing device is connected to sliders on the first X-axis guide rail assembly and the second X-axis guide rail assembly, and the tray-bearing device is provided with a handle; the sliding plate is connected to the Y-axis linear module, and the lifting mechanism is connected to the sliding plate.

[0008] The automatic capping machine for blood collection tubes also includes a capping device connected to a lifting mechanism. The capping device includes a top plate, a connecting plate, a bottom plate, a front plate, a left side plate, a right side plate, a traction rod connecting plate, a traction rod motion drive cylinder, a first Z-axis guide rail assembly, a second Z-axis guide rail assembly, and multiple traction rods. The connecting plate is fixedly connected to the top plate, the front plate is fixedly connected to the top plate, the bottom plate is fixedly connected to the front plate, the left side plate is fixedly connected to the left side of the front plate, and the right side plate is fixedly connected to the right side of the front plate. The bottom plate has multiple through holes arranged in a straight line. The traction rod motion drive cylinder is fixedly connected to the front plate. The guide rail assembly and the second Z-axis guide rail assembly are fixedly connected side by side to the front plate. The middle part of the traction rod connecting plate is connected to the telescopic rod of the traction rod motion drive cylinder. One end of the traction rod connecting plate is connected to the slider of the first Z-axis guide rail assembly, and the other end of the traction rod connecting plate is connected to the slider of the second Z-axis guide rail assembly. Multiple traction rods are fixedly connected to the traction rod connecting plate and are arranged in a row at equal intervals. The traction rods are equipped with ball heads. When the multiple traction rods are in the initial position, the ball heads pass through the through holes in the bottom plate and extend outward from the through holes in the bottom plate. The telescopic rod of the traction rod motion drive cylinder is in the extended state.

[0009] The connecting plate of the cover device is connected to the lifting mechanism.

[0010] Preferably, the cap spacing device includes a conveying track, a conveying track support, a fixed plate, a first ball screw pair, a front bearing seat, a rear bearing seat, a translation drive motor, a third X-axis guide rail assembly, a sliding block, and a spacing feed plate. The conveying track support is connected to the support plate, and the conveying track is connected to the conveying track support. The fixed plate is fixedly connected to the support plate. The front bearing seat and the rear bearing seat are respectively fixedly connected to the fixed plate. The front end of the first ball screw pair is connected to the front bearing seat, and the rear end of the first ball screw pair is connected to the rear bearing seat. The third X-axis guide rail assembly is fixedly connected to the fixed plate. The sliding block is fixedly connected to the nut seat of the first ball screw pair, and the bottom of the sliding block is connected and engaged with the third X-axis guide rail assembly. The spacing feed plate is fixedly connected to the sliding block, and the spacing feed plate is provided with multiple cap receiving slots. The left end of the conveying track is close to the spacing feed plate. The translation drive motor is connected to the support plate, and the output shaft of the translation drive motor is connected to the first ball screw pair through a synchronous belt transmission mechanism.

[0011] Preferably, the automatic capping machine for blood collection tubes further includes a locking cylinder and a locking block. The locking cylinder is connected to a support plate, and the locking block is fixedly connected to the telescopic rod of the locking cylinder. The locking block is located below the tray support device.

[0012] Preferably, the Y-axis linear module includes a first Y-axis slide rail assembly, a second Y-axis slide rail assembly, a second ball screw pair, a left bearing seat, a right bearing seat, and a cover-closing device translation drive motor. The first Y-axis slide rail assembly and the second Y-axis slide rail assembly are fixedly connected side by side to the frame. The left bearing seat and the right bearing seat are respectively fixedly connected to the frame. The left end of the ball screw in the second ball screw pair is connected to the left bearing seat, and the right end of the ball screw is connected to the right bearing seat. The sliding plate is fixedly connected to the nut seat in the second ball screw pair. The sliding plate is fixedly connected to the slider of the first Y-axis slide rail assembly and the slider of the second Y-axis slide rail assembly. The cover-closing device translation drive motor is fixedly connected to the frame. The output shaft of the cover-closing device translation drive motor is connected to the ball screw of the second ball screw pair through a transmission mechanism.

[0013] The lifting mechanism includes a lifting cylinder, a first guide shaft, a second guide shaft, a third guide shaft, a fourth guide shaft, a first linear bearing, a second linear bearing, a third linear bearing, and a fourth linear bearing. The first linear bearing, the second linear bearing, the third linear bearing, and the fourth linear bearing are fixedly connected to the sliding plate. The first guide shaft, the second guide shaft, the third guide shaft, and the fourth guide shaft pass through the first linear bearing, the second linear bearing, the third linear bearing, and the fourth linear bearing, respectively. The lower ends of the first guide shaft, the second guide shaft, the third guide shaft, and the fourth guide shaft are fixedly connected to the top plate of the cover device.

[0014] A second aspect of this utility model provides a cover fitting device, including a top plate, a connecting plate, a bottom plate, a front plate, a left side plate, a right side plate, a traction rod connecting plate, a traction rod motion drive cylinder, a first Z-axis guide rail assembly, a second Z-axis guide rail assembly, and multiple traction rods. The connecting plate is fixedly connected to the top plate, the front plate is fixedly connected to the top plate, the bottom plate is fixedly connected to the front plate, the left side plate is fixedly connected to the left side of the front plate, and the right side plate is fixedly connected to the right side of the front plate. The bottom plate has multiple through holes arranged in a straight line. The traction rod motion drive cylinder is fixedly connected to the front plate. The first Z-axis guide rail assembly and the second Z-axis guide rail assembly are connected to the top plate, the connecting ... Two Z-axis guide rail assemblies are fixedly connected side-by-side to the front plate. The middle part of the traction rod connecting plate is connected to the telescopic rod of the traction rod motion drive cylinder. One end of the traction rod connecting plate is connected to the slider of the first Z-axis guide rail assembly, and the other end of the traction rod connecting plate is connected to the slider of the second Z-axis guide rail assembly. Multiple traction rods are fixedly connected to the traction rod connecting plate and are arranged in a row at equal intervals. Each traction rod has a ball head. When the multiple traction rods are in the initial position, the ball head passes through the through hole in the bottom plate and extends outward from the through hole in the bottom plate. The telescopic rod of the traction rod motion drive cylinder is in the extended state.

[0015] The beneficial effects of this invention are that the capping device ensures that every cap is obtained without omission, guaranteeing stable and reliable operation of the equipment, improving work efficiency, and enabling precise placement of the caps on the blood collection tubes. The caps are obtained stably and reliably through the friction between the ball head of the traction rod and the groove of the rubber stopper.

[0016] Further features of this invention will be clearly described in the following detailed description of the embodiments. Attached Figure Description

[0017] Figure 1 This is an isometric view of an automatic blood collection tube capping machine;

[0018] Figure 2 This is an isometric view of an automatic blood collection tube capping machine;

[0019] Figure 3 This is an isometric view of an automatic blood collection tube capping machine;

[0020] Figure 4 This is a front view of the automatic capping machine for blood collection tubes;

[0021] Figure 5 This is a rear view of the automatic capping machine for blood collection tubes;

[0022] Figure 6 This is a top view of the automatic capping machine for blood collection tubes;

[0023] Figure 7 This is a left view of an automatic blood collection tube capping machine;

[0024] Figure 8This is a right view of an automatic blood collection tube capping machine;

[0025] Figure 9 This is an isometric drawing of the closing device;

[0026] Figure 10 yes Figure 9 Front view of the cover device shown;

[0027] Figure 11 yes Figure 9 Rear view of the cover device shown;

[0028] Figure 12 yes Figure 9 Top view of the cover device shown;

[0029] Figure 13 yes Figure 9 Left view of the cover device shown;

[0030] Figure 14 It is a diagram showing the state in which the ball head of the traction rod in the cap is embedded in the groove of the rubber plug of the cap;

[0031] Figure 15 This is a diagram showing the state of the cover-closing device with one row of traction rods directly above the row of caps.

[0032] Figure 16 It is a diagram showing the state in which the ball heads of a row of traction rods in the cap are embedded in the grooves of the rubber plugs of the cap.

[0033] Figure 17 yes Figure 16 Front view of the structure shown;

[0034] Figure 18 yes Figure 16 Rear view of the structure shown;

[0035] Figure 19 yes Figure 16 Left view of the structure shown;

[0036] Figure 20 This is a diagram showing the state of a row of traction rods detached from the cap in the capping device.

[0037] Explanation of symbols in the diagram:

[0038] 1. Vibratory feeder; 2. Support plate; 3. Column; 4. Frame; 5. Pallet bearing device; 5-1. Handle; 6. First X-axis guide rail assembly; 7. Second X-axis guide rail assembly; 8. Locking cylinder; 9. Locking block; 10. Conveying track; 11. Fixing plate; 12. First ball screw pair; 13. Front bearing housing; 14. Rear bearing housing; 15. Translation drive motor; 16. 17. Sliding block, 18. Pitched feed plate, 19. First Y-axis slide rail assembly, 20. Second Y-axis slide rail assembly, 21. Second ball screw pair, 22. Left bearing housing, 23. Right bearing housing, 24. Lifting cylinder, 25. Sliding plate, 26. First guide shaft, 27. Second guide shaft, 28. Third guide shaft, 29. Fourth guide shaft, 30. First linear bearing, 31. Second linear bearing, 32. Third linear bearing, 33. Fourth linear bearing, 34. Covering device translation drive motor, 35. Tray, 36. Cap, 37. Blood collection tube, 38. Cap, 38-1. Rubber stopper, 39. Cap; 100. Covering device, 101. Top plate, 101-1. Guide shaft connecting hole, 102. Connecting plate, 103. Bottom plate, 103-1. Through hole, 104. Front plate, 105. Left side plate, 106. Right side plate, 107. Traction rod connecting plate, 108. Traction rod motion drive cylinder, 109. First Z-axis direction guide rail assembly, 110. Second Z-axis direction guide rail assembly, 111. Traction rod, 111-1. Ball head. Detailed Implementation

[0039] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0040] like Figure 1-8 As shown, the automatic capping machine for blood collection tubes includes a vibrating plate 1, a support plate 2, columns 3, a frame 4, a cap separating device, and a cap closing device. Four columns 3 are fixedly installed on the support plate 2, and the frame 4 is fixedly connected to the upper ends of the four columns 3. The frame 4 is located on a horizontal plane, and the cap separating device is connected to the support plate 2. The vibrating plate 1 is close to the support plate 2.

[0041] The automatic blood collection tube capping machine includes a tray support device 5, a first X-axis guide rail assembly 6, a second X-axis guide rail assembly 7, a locking cylinder 8, and a locking block 9. The first X-axis guide rail assembly 6 and the second X-axis guide rail assembly 7 are fixedly mounted side by side on a support plate 2. The locking cylinder 8 is fixedly mounted on the bottom surface of the support plate 2, and its telescopic rod passes through the support plate 2. The locking block 9 is fixedly connected to the telescopic rod of the locking cylinder 8 and is located below the tray support device. The tray support device is connected to a slider on the first X-axis guide rail assembly 6 and to a slider on the second X-axis guide rail assembly 7. The pallet carrying device is equipped with a handle 5-1. With the support of the first X-axis guide rail assembly 6 and the second X-axis guide rail assembly 7, the operator can pull the handle 5-1 to make the entire pallet carrying device slide back and forth along the X-axis direction. When the position of the pallet carrying device is determined, the locking cylinder 8 is activated. The locking cylinder 8 drives the locking block 9 to move upward, thereby pressing against the bottom surface of the pallet carrying device and fixing the pallet carrying device so that the pallet carrying device is stationary.

[0042] The cap spacing device includes a conveying track 10, a conveying track support, a fixed plate 11, a first ball screw pair 12, a front bearing seat 13, a rear bearing seat 14, a translation drive motor 15, a third X-axis guide rail assembly 16, a sliding block 17, and a spacing feed plate 18. The conveying track support is connected to the support plate 2, the conveying track 10 is connected to the conveying track support, the fixed plate 11 is fixedly connected to the support plate 2, the front bearing seat 13 and the rear bearing seat 14 are respectively fixedly installed on the fixed plate 11, the front end of the first ball screw pair 12 is connected to the front bearing seat 13, the rear end of the first ball screw pair 12 is connected to the rear bearing seat 14, the third X-axis guide rail assembly 16 is fixedly installed on the fixed plate 11, the sliding block 17 is fixedly connected to the nut seat of the first ball screw pair 12, the bottom of the sliding block 17 is connected and engaged with the third X-axis guide rail assembly 16, the spacing feed plate 18 is fixedly connected to the sliding block 17, and the spacing feed plate 18 is provided with a cap receiving groove. The left end of the conveyor track 10 is close to the feed plate 18. A translation drive motor 15 is fixedly mounted on the support plate 2. The output shaft of the translation drive motor 15 is connected to the first ball screw pair 12 via a synchronous belt transmission mechanism. When the translation drive motor 15 is started, it drives the ball screw of the first ball screw pair 12 to rotate via the synchronous belt transmission mechanism. This causes the nut seat of the first ball screw pair 12 to drive the sliding block 17 to slide along the X-axis, which in turn drives the feed plate 18 to slide along the X-axis. The conveyor track 10 has a channel into which the cap output from the vibratory feeder enters. The output end of the vibratory feeder is aligned with the right end of the conveyor track 10.

[0043] The following components are included: a first Y-axis slide rail assembly 19, a second Y-axis slide rail assembly 20, a second ball screw pair 21, a left bearing housing 22, a right bearing housing 23, a lifting cylinder 24, a sliding plate 25, a first guide shaft 26, a second guide shaft 27, a third guide shaft 28, a fourth guide shaft 29, a first linear bearing 30, a second linear bearing 31, a third linear bearing 32, a fourth linear bearing 33, and a cover-closing device translation drive motor 34. The first Y-axis slide rail assembly 19 and the second Y-axis slide rail assembly 20 are fixedly mounted side by side on the frame 4. The left bearing housing 22 and the right bearing housing 23 are respectively fixedly mounted on the frame 4. The left end of the ball screw in the second ball screw pair 21 is connected to the left bearing housing 22. The right end of the ball screw is connected to the right bearing seat 23. The sliding plate 25 is fixedly connected to the nut seat in the second ball screw pair 21. The sliding plate 25 is fixed to the slider of the first Y-axis slide rail assembly 19. The sliding plate 25 is fixedly connected to the slider of the second Y-axis slide rail assembly 20. The cover-closing device translation drive motor 34 is fixedly mounted on the frame 4. The synchronous belt transmission mechanism, composed of a driven synchronous pulley, a synchronous belt, and a driving synchronous pulley, is connected between the output shaft of the cover-closing device translation drive motor 34 and the ball screw in the second ball screw pair 21. Starting the cover-closing device translation drive motor 34 can rotate the ball screw of the second ball screw pair 21, thereby causing the sliding plate 25 to slide along the Y-axis direction.

[0044] The first linear bearing 30, the second linear bearing 31, the third linear bearing 32, and the fourth linear bearing 33 are fixedly mounted on the sliding plate 25, and the first guide shaft 26, the second guide shaft 27, the third guide shaft 28, and the fourth guide shaft 29 pass through the first linear bearing 30, the second linear bearing 31, the third linear bearing 32, and the fourth linear bearing 33, respectively.

[0045] like Figure 9-14As shown, the cover device 100 includes a top plate 101, a connecting plate 102, a bottom plate 103, a front plate 104, a left side plate 105, a right side plate 106, a traction rod connecting plate 107, a traction rod motion drive cylinder 108, a first Z-axis direction guide rail assembly 109, a second Z-axis direction guide rail assembly 110, and a traction rod 111. The connecting plate 102 is fixedly connected to the top plate 101. The front plate 104 is fixedly connected to the top plate 101 by screws. The bottom plate 103 is fixedly connected to the front plate 104 by screws. The left side plate 105 is fixedly connected to the left side of the front plate 104 by screws. The right side plate 106 is fixedly connected to the right side of the front plate 104 by screws. The top plate 101 has guide shaft connection holes 101-1 at its four corners, and the bottom plate 103 has multiple through holes 103-1 arranged in a straight line (5 are shown in the figure). The traction rod motion drive cylinder 108 is fixedly installed on the front plate 104. The first Z-axis direction guide rail assembly 109 and the second Z-axis direction guide rail assembly 110 are fixedly installed side by side on the front plate 104. The middle part of the traction rod connecting plate 107 is connected to the telescopic rod of the traction rod motion drive cylinder 108. One end of the traction rod connecting plate 107 is connected to the slider of the first Z-axis direction guide rail assembly 109, and the other end of the traction rod connecting plate 107 is connected to the slider of the second Z-axis direction guide rail assembly 110. Multiple traction rods 111 are fixedly connected to the traction rod connecting plate 107. The multiple traction rods 111 are arranged in a straight line (5 traction rods are shown in the figure), and the spacing between two adjacent traction rods 111 is the same. The traction rod 111 is provided with a ball head 111-1. Figure 9-14 The display shows that multiple traction rods 111 are in the initial position, the ball head 111-1 passes through the through hole 103-1 of the base plate 103, the ball head 111-1 extends outward from the through hole 103-1 of the base plate 103, and the telescopic rod of the traction rod motion drive cylinder 108 is in the extended state.

[0046] refer to Figure 1-18 The lower ends of the first guide shaft 26, the second guide shaft 27, the third guide shaft 28, and the fourth guide shaft 29 are fixedly connected to the four guide shaft connection holes 101-1 of the top plate 101, respectively. The cover device 100 is located below the sliding plate 25. The lifting cylinder 24 is fixedly installed on the sliding plate 25, and the telescopic rod of the lifting cylinder 24 is fixedly connected to the connecting plate 102. When the lifting cylinder 24 is activated, it drives the cover device 100 to rise or fall, and the four guide shafts slide along the Z-axis in the corresponding four linear bearings. When the cover device translation drive motor 34 is activated, it drives the ball screw in the second ball screw pair 21 to rotate through the synchronous belt transmission mechanism. The nut seat in the second ball screw pair 21 drives the sliding plate 25 to slide along the Y-axis under the support of the first Y-axis slide rail assembly 19 and the second Y-axis slide rail assembly 20. The sliding plate 25 drives the cover device to move along the Y-axis.

[0047] The working process of the above-mentioned automatic capping machine for blood collection tubes is described below:

[0048] A large number of caps are placed into vibratory plate 1.

[0049] The operator places multiple blood collection tubes 37 into tray 35, filling tray 35 with blood collection tubes. Tray 35 has multiple rows of blood collection tubes, with 5 blood collection tubes forming one row (e.g., ...). Figure 6 As shown, the trays are distributed along the X-axis. Then, the operator pulls the handle 5-1 of the tray support device to pull the tray support device 5 forward. Then, the tray 35 filled with blood collection tubes is placed on the tray support device 5. The tray support device 5 is then pushed backward to move it to the space below the frame 4. Then, the locking cylinder 8 is activated. The locking cylinder 8 drives the locking block 9 to move upward, thereby pressing against the bottom surface of the tray support device 5, so that the tray support device 5 and the tray 35 remain stationary.

[0050] Start vibratory feeder 1. Vibratory feeder 1 outputs caps. The caps enter the channel from the right end of the conveyor track 10 in sequence. The caps in the channel slowly move to the left and are output from the left end of the conveyor track 10.

[0051] A cap is output from the left end of the conveyor track 10 and enters the first cap receiving slot of the spacing feed plate 18. Then, the translation drive motor 15 is started to drive the spacing feed plate 18 to move a certain distance along the X-axis. The second cap receiving slot of the spacing feed plate 18 is aligned with the left end of the conveyor track 10, and the second cap output from the left end of the conveyor track 10 enters the second cap receiving slot. Next, the spacing feed plate 18 is driven to move a certain distance again, and the third cap receiving slot of the spacing feed plate 18 is aligned with the left end of the conveyor track 10. The third cap output from the left end of the conveyor track 10 enters the third cap receiving slot. The same method is used to make the fourth and fifth caps enter the fourth and fifth cap receiving slots, respectively. A certain distance is maintained between the five caps in the spacing feed plate 18 to ensure that the subsequent closing device can obtain five caps.

[0052] Next, the translation drive motor 15 drives the spacing feed plate 18 to continue moving along the X-axis, so that the spacing feed plate 18, with five caps, approaches the left end of the tray 35.

[0053] Next, activate the cover-closing device translation drive motor 34 to drive the sliding plate 25 to move to the left. Figure 6 (The displayed orientation) is above the spacing feed plate 18 (i.e., directly above the 5 caps), such as Figure 15As shown, the lifting cylinder 24 is then activated to move the cover device 100 downwards, and the five traction rods 111 move downwards accordingly. Since the cover device 100 is in its initial state, the ball heads 111-1 extend outwards from the through hole 103-1 of the bottom plate 103, and the five ball heads 111-1 are respectively embedded in the grooves of the rubber plugs 38-1 of the five caps in the spacing feed plate 18, as shown. Figure 14 , 16 As shown in -19.

[0054] Next, the lifting cylinder 24 is activated to move the capping device 100 upward. Due to the friction between the ball head 111-1 and the rubber stopper, the capping device 100 moves upward with the five caps, transferring the five caps in the feed plate 18. Next, the capping device translation drive motor 34 is activated to move the sliding plate 25 to the right above the tray 35. Then, the lifting cylinder 24 is activated to move the capping device 100 downward. The five traction rods 111 move downward with the five caps, causing the five caps to be fastened to the top openings of the blood collection tubes arranged in a row in the tray 35. The base plate 103 of the capping device 100 applies downward pressure to the caps, thus placing the caps on the blood collection tubes and completing the capping operation.

[0055] Next, the traction rod drive cylinder 108 is activated. The telescopic rod of the traction rod drive cylinder 108 retracts, and the traction rod connecting plate 107 moves upward, causing the five traction rods 111 to move upward. The five ball heads 111-1 then disengage from the grooves of the rubber plugs on the caps, and the five ball heads 111-1 retract to the inside of the bottom plate 103. Figure 20 As shown.

[0056] Next, the lifting cylinder 24 is activated to move the cover closing device 100 upward, moving the cover closing device 100 away from the tray, in preparation for obtaining a set of caps.

[0057] Next, the extension rod of the traction rod drive cylinder 108 extends, bringing the cover-closing device 100 to its initial state.

[0058] Next, the translation drive motor 15 drives the spacing feed plate 18 to move backward, ready to receive the next set of caps.

[0059] By repeating the above process, caps can be continuously placed on each column of blood collection tubes in tray 35.

[0060] It is evident that the process of capping the blood collection tubes is stable and reliable. The capping device 100 ensures that every cap is acquired without omission, and it can accurately place the caps onto the blood collection tubes.

[0061] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention. The actual structure is not limited to this. Therefore, if those skilled in the art are inspired by this description and, without departing from the inventive spirit of the present invention, adopt other forms of part configurations, driving devices, and connection methods to create structures and embodiments similar to this technical solution without creative design, all such structures and embodiments should fall within the protection scope of the present invention.

Claims

1. An automatic capping machine for blood collection tubes, comprising a vibratory plate, a support plate, a frame, a tray-bearing device, a first X-axis guide rail assembly, a second X-axis guide rail assembly, a cap-separating device, a Y-axis linear module, a sliding plate, and a lifting mechanism. The frame is fixedly connected to the support plate via columns. The cap-separating device is connected to the support plate. The first X-axis guide rail assembly and the second X-axis guide rail assembly are fixedly connected side-by-side to the support plate. The tray-bearing device is connected to sliders on the first X-axis guide rail assembly and the second X-axis guide rail assembly. The tray-bearing device is provided with a handle. The sliding plate is connected to the Y-axis linear module, and the lifting mechanism is connected to the sliding plate. Its features are, The automatic capping machine for blood collection tubes also includes a capping device connected to a lifting mechanism. The capping device comprises a top plate, a connecting plate, a bottom plate, a front plate, a left side plate, a right side plate, a traction rod connecting plate, a traction rod motion drive cylinder, a first Z-axis guide rail assembly, a second Z-axis guide rail assembly, and multiple traction rods. The connecting plate is fixedly connected to the top plate, the front plate is fixedly connected to the top plate, the bottom plate is fixedly connected to the front plate, the left side plate is fixedly connected to the left side of the front plate, and the right side plate is fixedly connected to the right side of the front plate. The bottom plate has multiple through holes arranged in a straight line. The traction rod motion drive cylinder is fixedly connected to the front plate. The first Z-axis guide rail assembly and the second Z-axis guide rail assembly are fixedly connected side by side on the front plate. The middle part of the traction rod connecting plate is connected to the telescopic rod of the traction rod motion drive cylinder. One end of the traction rod connecting plate is connected to the slider of the first Z-axis guide rail assembly, and the other end of the traction rod connecting plate is connected to the slider of the second Z-axis guide rail assembly. The multiple traction rods are fixedly connected to the traction rod connecting plate and are arranged in a row at equal intervals. Each traction rod is provided with a ball head. When the multiple traction rods are in the initial position, the ball head passes through the through hole of the bottom plate and extends outward from the through hole of the bottom plate. The telescopic rod of the traction rod motion drive cylinder is in the extended state. The connecting plate of the cover device is connected to the lifting mechanism.

2. The automatic capping machine for blood collection tubes according to claim 1, characterized in that, The cap-splitting device includes a conveying track, a conveying track support, a fixed plate, a first ball screw pair, a front bearing seat, a rear bearing seat, a translation drive motor, a third X-axis guide rail assembly, a sliding block, and a split-feed plate. The conveying track support is connected to the support plate, and the conveying track is connected to the conveying track support. The fixed plate is fixedly connected to the support plate. The front bearing seat and the rear bearing seat are respectively fixedly connected to the fixed plate. The front end of the first ball screw pair is connected to the front bearing seat, and the rear end of the first ball screw pair is connected to the rear bearing seat. The third X-axis guide rail assembly is fixedly connected to the fixed plate. The sliding block is fixedly connected to the nut seat of the first ball screw pair, and the bottom of the sliding block is connected and engaged with the third X-axis guide rail assembly. The split-feed plate is fixedly connected to the sliding block and has multiple cap-receiving slots. The left end of the conveying track is close to the split-feed plate. The translation drive motor is connected to the support plate, and the output shaft of the translation drive motor is connected to the first ball screw pair through a synchronous belt transmission mechanism.

3. The automatic capping machine for blood collection tubes according to claim 1, characterized in that, The automatic capping machine for blood collection tubes also includes a locking cylinder and a locking block. The locking cylinder is connected to a support plate, and the locking block is fixedly connected to the telescopic rod of the locking cylinder. The locking block is located below the tray support device.

4. The automatic capping machine for blood collection tubes according to claim 1, characterized in that, The Y-axis linear module includes a first Y-axis slide rail assembly, a second Y-axis slide rail assembly, a second ball screw pair, a left bearing seat, a right bearing seat, and a cover-closing device translation drive motor. The first Y-axis slide rail assembly and the second Y-axis slide rail assembly are fixedly connected side by side to the frame. The left bearing seat and the right bearing seat are respectively fixedly connected to the frame. The left end of the ball screw in the second ball screw pair is connected to the left bearing seat, and the right end of the ball screw is connected to the right bearing seat. The sliding plate is fixedly connected to the nut seat in the second ball screw pair. The sliding plate is fixedly connected to the slider of the first Y-axis slide rail assembly and the slider of the second Y-axis slide rail assembly. The cover-closing device translation drive motor is fixedly connected to the frame. The output shaft of the cover-closing device translation drive motor is connected to the ball screw of the second ball screw pair through a transmission mechanism. The lifting mechanism includes a lifting cylinder, a first guide shaft, a second guide shaft, a third guide shaft, a fourth guide shaft, a first linear bearing, a second linear bearing, a third linear bearing, and a fourth linear bearing. The first linear bearing, the second linear bearing, the third linear bearing, and the fourth linear bearing are fixedly connected to the sliding plate. The first guide shaft, the second guide shaft, the third guide shaft, and the fourth guide shaft pass through the first linear bearing, the second linear bearing, the third linear bearing, and the fourth linear bearing, respectively. The lower ends of the first guide shaft, the second guide shaft, the third guide shaft, and the fourth guide shaft are fixedly connected to the top plate of the cover device.

5. A closing device, characterized in that, The system includes a top plate, a connecting plate, a bottom plate, a front plate, a left side plate, a right side plate, a traction rod connecting plate, a traction rod motion drive cylinder, a first Z-axis guide rail assembly, a second Z-axis guide rail assembly, and multiple traction rods. The connecting plate is fixedly connected to the top plate, the front plate is fixedly connected to the top plate, the bottom plate is fixedly connected to the front plate, the left side plate is fixedly connected to the left side of the front plate, and the right side plate is fixedly connected to the right side of the front plate. The bottom plate has multiple through holes arranged in a straight line. The traction rod motion drive cylinder is fixedly connected to the front plate. The first Z-axis guide rail assembly and the second Z-axis guide rail assembly... The components are fixedly connected side-by-side to the front panel. The middle part of the traction rod connecting plate is connected to the telescopic rod of the traction rod motion drive cylinder. One end of the traction rod connecting plate is connected to the slider of the first Z-axis direction guide rail assembly, and the other end of the traction rod connecting plate is connected to the slider of the second Z-axis direction guide rail assembly. The multiple traction rods are fixedly connected to the traction rod connecting plate and are arranged in a row at equal intervals. Each traction rod has a ball head. When the multiple traction rods are in the initial position, the ball head passes through the through hole in the bottom plate and extends outward from the through hole in the bottom plate. The telescopic rod of the traction rod motion drive cylinder is in the extended state.

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