Test tube filling and marking machine

Through the fully automated design of the test tube filling and marking machine, the problems of low production efficiency and high losses caused by the separation of test tube filling and injection marking are solved, and the automated assembly line production of test tubes is realized, which improves efficiency and reduces losses.

CN223045412UActive Publication Date: 2025-07-01JIANGMEN CHUANGSHENG TECH CO LTD
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Patent Information

Application Number
CN202422140008.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-02
Publication Date
2025-07-01
Estimated Expiration
2034-09-02

AI Technical Summary

Technical Problem

In the prior art, the test tube filling and inkjet process need to be carried out separately, resulting in low production efficiency and the test tube is prone to breaking during frequent transport, increasing losses.

Method used

A test tube filling and marking machine is designed to realize the fully automated assembly line of test tube filling, screwing cover and inkjet. Through the control device, the electrical connection between the air tube loading device, the filling device and the inkjet marking device, and the combination of rotating fixtures, transfer devices and inkjet marking mechanisms is used to realize the automatic transmission and inkjet test tubes.

Benefits of technology

It improves production efficiency, reduces workers' labor intensity, reduces the loss of test tubes during transportation, avoids test tubes breakage, and reduces production costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a test tube filling and marking machine which comprises a control device, an empty tube feeding device, a filling device and a code spraying and marking device. The filling device comprises a rotating clamp, a filling mechanism and a cap screwing mechanism, the rotating clamp comprises an arc-shaped baffle and a rotating disc, an arc-shaped groove capable of containing a test tube is formed in the rotating disc, the arc-shaped baffle covers the range not less than one half of the outer edge of the rotating disc, and the arc-shaped groove and the arc-shaped baffle form a containing cavity capable of fixing the test tube; the code spraying and marking device comprises a marking conveying mechanism and a code spraying and marking mechanism erected above the marking conveying mechanism, the marking conveying mechanism is composed of a first conveying belt and two first guide plates, a first conveying groove allowing test tubes to pass through is reserved between the two first guide plates, and a notch is formed in any position of each first guide plate; wherein a transfer device is arranged between the filling device and the code spraying and marking device, and the transfer device is used for taking out the filled test tubes on the rotating disc and flatly placing the test tubes on the first conveying belt.
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Description

Technical Field

[0001] The utility model relates to the technical field of test tube filling and inkjet coding, and particularly relates to a test tube filling and marking machine. Background Art

[0002] Modern reagent filling generally uses a filling machine, which greatly improves the filling speed and accuracy. For test tubes that need to be capped, machine capping reduces the labor intensity and has a better capping effect. Among them, after the test tubes are filled or before the test tubes are filled, it is necessary to inkjet mark the outer walls of the test tubes to distinguish the types of filled reagents. However, at present, the test tubes are first filled in batches and then centrally transferred to an inkjet coding machine for inkjet coding; or the test tubes are pre-inked in batches first and then transferred to a filling machine for filling, resulting in low production efficiency, and the test tubes are prone to breakage during frequent transportation, resulting in large losses. Content of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a test tube filling and marking machine, in which the filling and inkjet coding of test tubes are fully automated, effectively improving the production efficiency, reducing the labor intensity of workers, reducing the loss of test tubes during transportation, and helping to reduce the production cost.

[0004] The test tube filling and marking machine according to an embodiment of the utility model includes:

[0005] A control device and an empty tube feeding device, a filling device, and an inkjet marking device are sequentially arranged along the conveying direction of the test tubes. The control device is electrically connected to the empty tube feeding device, the filling device, and the inkjet marking device;

[0006] The filling device includes a rotary fixture, a filling mechanism and a capping mechanism sequentially arranged along the rotation direction of the rotary fixture. The rotary fixture includes an arc-shaped baffle and a turntable. An arc-shaped groove for accommodating the test tube is arranged on the turntable. The arc-shaped grooves are spaced apart from each other along the axis of the turntable on the edge of the turntable. The concave surface of the arc-shaped baffle faces the turntable, and the arc-shaped baffle covers at least half of the outer edge of the turntable. The arc-shaped groove near the arc-shaped baffle and the arc-shaped baffle form an accommodating cavity for fixing the test tube. The discharging end of the empty tube feeding device is correspondingly connected to any one of the arc-shaped grooves upstream of the filling machine;

[0007] The inkjet marking device is arranged downstream of the capping mechanism. The inkjet marking device includes a marking conveying mechanism and an inkjet marking mechanism arranged above the marking conveying mechanism. The marking conveying mechanism is composed of a first conveyor belt and two first guide plates respectively arranged on both sides of the first conveyor belt. A first conveying groove for the test tube to pass through is left between the two first guide plates. A notch is arranged at any position of the first guide plate, and the inkjet marking mechanism is correspondingly arranged with the notch;

[0008] Among them, a transfer device is arranged between the filling device and the inkjet marking device. The transfer device is used to take out the test tubes that have been filled on the turntable and place them flat on the first conveyor belt.

[0009] The test tube filling and marking machine according to the embodiment of the present invention has at least the following beneficial effects: The empty test tubes are automatically fed, filled, capped, inkjet marked, without manual operation by workers, effectively improving production efficiency. At the same time, the frequent centralized batch transfer of test tubes is avoided, effectively preventing the test tubes from being broken during centralized transfer and effectively reducing losses.

[0010] Specifically, the empty test tubes are conveyed by the empty tube feeding device to the empty tube inlet of the rotary fixture. At this time, the arc-shaped groove corresponding to the outlet of the empty tube feeding device is not covered by the arc-shaped baffle. The transfer device transfers the empty test tubes on the empty tube feeding device to the arc-shaped groove at this position. Among them, the arc-shaped baffle covers not less than half of the edge range of the turntable. The arc-shaped groove where the empty test tubes are placed then rotates into the coverage range of the arc-shaped baffle, and the arc-shaped groove and the arc-shaped baffle together form a receiving cavity that can fix the test tubes. The empty test tubes are sequentially transferred to the filling mechanism and the capping mechanism, and the filling process and the capping process are carried out in sequence. The test tubes after capping are conveyed to the inkjet marking device for inkjet marking on the outer wall of the test tubes. Further, the marking conveying mechanism is composed of a first conveyor belt and two first guide plates respectively arranged on both sides of the first conveyor belt. A first conveying groove for the test tubes to pass through is left between the two first guide plates. The width of the first conveying groove is slightly larger than the maximum diameter of the test tubes, which can not only convey the test tubes but also prevent the test tubes from shaking randomly during the conveying process and the inkjet marking process. In addition, the first guide plate is provided with a notch as the inkjet marking station of the inkjet marking mechanism.

[0011] For the test tube filling and marking machine according to the embodiment of the present invention, distance adjusting components are arranged on both sides of the first conveyor belt. The distance adjusting component consists of a first bracket, a fixed clamp installed on the first bracket, and a connecting rod. The fixed clamp clamps one end of the connecting rod, and the other end of the connecting rod is fixedly connected to the first guide plate. By adjusting the position where the fixed clamp clamps the connecting rod, the distance between the two first guide plates can be adjusted to meet the conveying of test tubes with different diameters.

[0012] For the test tube filling and marking machine according to the embodiment of the present invention, arc-shaped guide plates are arranged on the first guide plates close to the turntable. The arc-shaped guide plates of the two first guide plates are arranged oppositely to form a horn-shaped feed inlet, which is convenient for the test tubes to enter the first conveying groove, and the horn-shaped feed inlet plays a guiding role.

[0013] According to the test tube filling and marking machine of the embodiment of the present utility model, the inkjet marking device is further provided with a material blocking component. The material blocking component includes a material blocking cylinder and a material blocking plate arranged at the output end of the material blocking cylinder. The material blocking cylinder is arranged on one side of the notch. The material blocking cylinder drives the material blocking plate to move into the notch so that the test tube pauses to move forward. This ensures that the inkjet marking mechanism can accurately spray the label code on the outer wall of the test tube. After the inkjet marking is completed, the material blocking cylinder starts and drives the material blocking plate to reset. At this time, the test tube that has completed the inkjet marking can continue to be conveyed to the material receiving device.

[0014] According to the test tube filling and marking machine of the embodiment of the present utility model, the empty tube feeding device includes an empty tube conveying mechanism and an empty tube transferring mechanism. The empty tube conveying mechanism includes a second conveyor belt and second guide plates respectively arranged on both sides of the second conveyor belt. A second conveying groove for the test tube to pass through is formed between the two second guide plates. The empty tube transferring mechanism is arranged at the discharge end of the second conveying groove. The empty tube transferring mechanism is used to transfer the test tube into the arc groove of the turntable.

[0015] According to the test tube filling and marking machine of the embodiment of the present utility model, the empty tube transferring mechanism includes a transfer cylinder and a tube clamping manipulator arranged at the output end of the transfer cylinder. The transfer cylinder drives the tube clamping manipulator to transfer the empty test tube between the discharge end of the second conveying groove and the turntable.

[0016] According to the test tube filling and marking machine of the embodiment of the present utility model, the cap screwing mechanism is composed of a lifting cylinder, a rotating motor arranged at the output end of the lifting cylinder, and a cap screwing clamp arranged at the output end of the rotating motor. The rotating motor drives the cap screwing clamp to rotate to fix the bottle cap on the test tube.

[0017] According to the test tube filling and marking machine of the embodiment of the present utility model, the cap screwing mechanism is further provided with a bottle cap feeding component. The bottle cap feeding component includes a vibration screening machine and a bottle cap transferring mechanism. The bottle cap transferring mechanism is arranged at the discharge end of the vibration screening machine. The bottle cap transferring mechanism includes a translation cylinder and a cap picking clamp arranged at the output end of the translation cylinder. The translation cylinder drives the cap picking clamp to transfer the bottle cap to the mouth of the test tube.

[0018] According to the test tube filling and marking machine of the embodiment of the present utility model, the cap screwing mechanism further includes a fixing component. The fixing component is composed of two flat push cylinders respectively arranged on both sides of the test tube and a silica gel pad arranged at the output end of the flat push cylinder. The two flat push cylinders jointly clamp and fix the test tube with the bottle cap to be screwed to ensure that the test tube can smoothly complete the cap screwing and prevent the test tube from rotating during cap screwing, resulting in abnormal cap fixing.

[0019] The additional aspects and advantages of the present utility model will be partially given in the following description, partially will become obvious from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the following description of the embodiments in conjunction with the accompanying drawings, wherein:

[0021] Figure 1 is a schematic structural diagram of a test tube filling and marking machine according to an embodiment of the present utility model;

[0022] Figure 2 is a schematic structural diagram of a cap screwing mechanism according to an embodiment of the present utility model;

[0023] Figure 3 is a schematic structural diagram of a marking and conveying mechanism according to an embodiment of the present utility model.

[0024] Description of the reference numerals:

[0025] Empty tube feeding device 100; second conveyor belt 110; second guide plate 120; second conveying trough 130; transfer cylinder 140; tube clamping manipulator 150;

[0026] Filling device 200; rotary fixture 210; arc-shaped baffle 211; turntable 212; arc-shaped groove 2121; accommodation cavity 213; filling mechanism 220; cap screwing mechanism 230; vibrating sieve 231; translation cylinder 232; cap picking clamp 233; flat push cylinder 234; silica gel pad 235; lifting cylinder 236; rotary motor 237; cap screwing clamp 238;

[0027] Inkjet marking device 300; marking and conveying mechanism 310; first conveyor belt 311; first guide plate 312; notch 3121; first conveying trough 313; first bracket 314; fixed clamp 315; connecting rod 316; arc-shaped guide plate 317; inkjet marking mechanism 320; material blocking assembly 330; material blocking cylinder 331; material blocking plate 332;

[0028] Transfer device 400. Detailed implementation manners

[0029] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0030] In the description of the present utility model, it should be understood that with respect to the orientation description, such as the upper, lower, front, rear, left, right, etc., the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0031] In the description of the utility model, the meaning of "several" is one or more, the meaning of "multiple" is two or more, and understandings such as "greater than", "less than", "exceeding", etc. do not include the present number, and understandings such as "above", "below", "within", etc. include the present number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0032] In the description of the present utility model, unless otherwise clearly defined, terms such as "arrangement", "installation", "connection", etc. should be understood in a broad sense, and those skilled in the art to which the present utility model pertains can reasonably determine the specific meanings of the above terms in the present utility model in combination with the specific content of the technical solution.

[0033] Referring to Figures 1 to 3 , an embodiment of the present utility model provides a test tube filling and marking machine, which includes a control device and an empty tube feeding device 100, a filling device 200, and a coding and marking device 300 arranged in sequence along the conveying direction of the test tube. The control device is electrically connected to the empty tube feeding device 100, the filling device 200, and the coding and marking device 300; the filling device 200 includes a rotating fixture 210, a filling mechanism 220 and a capping mechanism 230 arranged in sequence along the rotation direction of the rotating fixture 210. The rotating fixture 210 includes an arc-shaped baffle 211 and a turntable 212. An arc-shaped groove 2121 for accommodating the test tube is arranged on the turntable 212. The arc-shaped grooves 2121 are distributed at intervals along the axis of the turntable 212 on the edge of the turntable 212. The concave surface of the arc-shaped baffle 211 faces the turntable 212. The arc-shaped baffle 211 covers no less than one-half of the outer edge of the turntable 212. The arc-shaped groove 2121 on the side close to the arc-shaped baffle 211 and the arc-shaped baffle 211 form an accommodating cavity 213 for fixing the test tube. The discharging end of the empty tube feeding device 100 is correspondingly connected to any one of the arc-shaped grooves 2121 upstream of the filling machine; the coding and marking device 300 is arranged downstream of the capping mechanism 230. The coding and marking device 300 includes a marking conveying mechanism 310 and a coding and marking mechanism 320 arranged above the marking conveying mechanism 310. The marking conveying mechanism 310 is composed of a first conveyor belt 311 and two first guide plates 312 respectively arranged on both sides of the first conveyor belt 311. A first conveying groove 313 for the test tube to pass through is left between the two first guide plates 312. A notch 3121 is arranged at any position of the first guide plate 312. The coding and marking mechanism 320 is correspondingly arranged with the notch 3121;

[0034] Among them, a transfer device 400 is arranged between the filling device 200 and the coding and marking device 300. The transfer device 400 is used to take out the test tubes that have been filled on the turntable 212 and place them flat on the first conveyor belt 311.

[0035] The empty test tubes are automatically processed from feeding to filling, capping, and inkjet coding and marking, without manual operation by workers, effectively improving production efficiency. At the same time, frequent centralized batch transfer of test tubes is avoided, effectively preventing the test tubes from being broken during centralized transportation and effectively reducing losses.

[0036] Specifically, the empty test tubes are conveyed by the empty tube feeding device 100 to the empty tube feeding position of the rotary fixture 210. At this time, the arc-shaped groove 2121 corresponding to the discharge port of the empty tube feeding device 100 is not covered by the arc-shaped baffle 211. The transfer device 400 transfers the empty test tubes on the empty tube feeding device 100 into the arc-shaped groove 2121 at this position. Among them, the arc-shaped baffle 211 covers not less than half of the edge range of the turntable 212. The arc-shaped groove where the empty test tubes are placed then rotates into the coverage range of the arc-shaped baffle 211, and the arc-shaped groove and the arc-shaped baffle 211 together form a receiving cavity 213 that can fix the test tubes. The empty test tubes are sequentially transferred to the filling mechanism 220 and the capping mechanism 230, and the filling process and the capping process are carried out in sequence. The test tubes after capping are conveyed to the inkjet coding and marking device 300 for inkjet coding and marking on the outer wall of the test tubes. Further, the marking conveying mechanism 310 is composed of a first conveyor belt 311 and two first guide plates 312 respectively arranged on both sides of the first conveyor belt 311. A first conveying groove 313 for the test tubes to pass through is left between the two first guide plates 312. The width of the first conveying groove 313 is slightly larger than the maximum diameter of the test tubes, which can not only convey the test tubes but also prevent the test tubes from shaking randomly during the conveying process and the inkjet coding and marking process. In addition, the first guide plate 312 reserves a notch 3121 as the inkjet coding station of the inkjet coding mechanism 320.

[0037] According to some embodiments of the present application, distance adjustment components are arranged on both sides of the first conveyor belt 311. The distance adjustment component is composed of a first bracket 314, a fixed clamp 315 installed on the first bracket 314, and a connecting rod 316. The fixed clamp 315 clamps one end of the connecting rod 316, and the other end of the connecting rod 316 is fixedly connected to the first guide plate 312. By adjusting the position where the fixed clamp 315 clamps the connecting rod 316, the distance between the two first guide plates 312 can be adjusted to meet the conveying of test tubes with different diameters. Further, an arc-shaped guide plate 317 is arranged on the first guide plate 312 close to the turntable 212. The arc-shaped guide plates 317 of the two first guide plates 312 are arranged oppositely to form a horn-shaped feed inlet, which is convenient for the test tubes to enter the first conveying groove 313, and the horn-shaped feed inlet plays a guiding role.

[0038] According to some embodiments of the present application, the inkjet marking device 300 is further provided with a material blocking assembly 330. The material blocking assembly 330 includes a material blocking cylinder 331 and a material blocking plate 332 disposed at the output end of the material blocking cylinder 331. The material blocking cylinder 331 is disposed on one side of the notch 3121. The material blocking cylinder 331 drives the material blocking plate 332 to move into the notch 3121 so that the test tube pauses from moving forward. This ensures that the inkjet marking mechanism 320 can accurately inkjet the label code onto the outer wall of the test tube. After the inkjet marking is completed, the material blocking cylinder 331 is activated to drive the material blocking plate 332 to reset. At this time, the test tube with the inkjet marking completed can continue to be transported to the material receiving device.

[0039] According to some embodiments of the present application, the empty tube feeding device 100 includes an empty tube conveying mechanism and an empty tube transferring mechanism. The empty tube conveying mechanism includes a second conveyor belt 110 and second guide plates 120 respectively disposed on both sides of the second conveyor belt 110. A second conveying groove 130 for the test tube to pass through is formed between the two second guide plates 120. The empty tube transferring mechanism is disposed at the discharge end of the second conveying groove 130, and the empty tube transferring mechanism is used to transfer the test tube into the arc groove of the turntable 212. Further, the empty tube transferring mechanism includes a transfer cylinder 140 and a tube clamping manipulator 150 disposed at the output end of the transfer cylinder 140. The transfer cylinder 140 drives the tube clamping manipulator 150 to transfer the empty test tube between the discharge end of the second conveying groove 130 and the turntable 212.

[0040] According to some embodiments of the present application, the capping mechanism 230 is composed of a lifting cylinder 236, a rotating motor 237 disposed at the output end of the lifting cylinder 236, and a capping clamp 238 disposed at the output end of the rotating motor 237. The rotating motor 237 drives the capping clamp 238 to rotate to fix the bottle cap on the test tube. Further, the capping mechanism 230 is further provided with a bottle cap feeding assembly. The bottle cap feeding assembly includes a vibrating screening machine 231 and a bottle cap transferring mechanism. The bottle cap transferring mechanism is disposed at the discharge end of the vibrating screening machine 231. The bottle cap transferring mechanism includes a translation cylinder 232 and a cap picking clamp 233 disposed at the output end of the translation cylinder 232. The translation cylinder 232 drives the cap picking clamp 233 to transfer the bottle cap to the mouth of the test tube.

[0041] Further, the capping mechanism 230 further includes a fixing assembly. The fixing assembly is composed of two flat push cylinders 234 respectively disposed on both sides of the test tube and a silica gel pad 235 disposed at the output end of the flat push cylinder 234. The two flat push cylinders 234 jointly clamp and fix the test tube with the bottle cap to be capped to ensure that the test tube can successfully complete capping and prevent the test tube from rotating during capping, resulting in abnormal bottle cap fixing.

[0042] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc., mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0043] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. Test tube filling and marking machine, characterized in that, It includes a control device and an empty tube feeding device, a filling device, and a coding and marking device which are sequentially arranged along the conveying direction of the test tube, and the control device is electrically connected with the empty tube feeding device, the filling device, and the coding and marking device; The filling device comprises a rotating fixture, a filling mechanism and a capping mechanism sequentially arranged along the rotating direction of the rotating fixture, the rotating fixture comprises an arc-shaped baffle and a turntable, the turntable is provided with an arc-shaped groove capable of accommodating a test tube, the arc-shaped grooves are distributed on the edge of the turntable at intervals around the axis of the turntable, the inner concave surface of the arc-shaped baffle faces the turntable, the arc-shaped baffle covers no less than one-half of the outer edge of the turntable, the arc-shaped groove close to one side of the arc-shaped baffle and the arc-shaped baffle form a accommodating cavity capable of fixing a test tube, and the discharge end of the empty tube feeding device is correspondingly connected to any one of the arc-shaped grooves located upstream of the filling machine; The coding marking device is arranged downstream of the capping mechanism, and comprises a marking conveying mechanism and a coding marking mechanism mounted above the marking conveying mechanism, wherein the marking conveying mechanism is composed of a first conveying belt and two first guide plates respectively arranged on both sides of the first conveying belt, a first conveying groove for the test tube to pass through is reserved between the two first guide plates, a notch is arranged at any position of the first guide plate, and the coding marking mechanism is arranged corresponding to the notch; Wherein, a transfer device is arranged between the filling device and the coding and marking device, and the transfer device is used to take out the filled test tubes on the turntable and place them flat on the first conveyor belt.

2. The test tube filling and marking machine according to claim 1, characterized in that: Distance-adjusting components are provided on both sides of the first conveyor belt. The distance-adjusting components are composed of a first bracket, a fixing clamp installed on the first bracket, and a connecting rod. The fixing clamp clamps one end of the connecting rod, and the other end of the connecting rod is fixedly connected to the first guide plate.

3. The test tube filling and marking machine according to claim 1, characterized in that: The first guide plate is provided with an arc-shaped guide plate close to the turntable, and the arc-shaped guide plates of the two first guide plates are arranged opposite to each other to form a trumpet-shaped feed port.

4. The test tube filling and marking machine according to claim 1, characterized in that: The inkjet marking device is also provided with a material blocking assembly, which includes a material blocking cylinder and a material blocking plate arranged at the output end of the material blocking cylinder. The material blocking cylinder is arranged on one side of the notch, and the material blocking cylinder drives the material blocking plate to move into the notch so that the test tube pauses and continues to move forward.

5. The test tube filling and marking machine according to claim 1, characterized in that: The empty tube loading device includes an empty tube conveying mechanism and an empty tube transfer mechanism. The empty tube conveying mechanism includes a second conveyor belt and second guide plates arranged on both sides of the second conveyor belt. A second conveying trough for the test tube to pass through is formed between the two second guide plates. The empty tube transfer mechanism is arranged at the discharge end of the second conveying trough. The empty tube transfer mechanism is used to transfer the test tube to the arc-shaped groove of the turntable.

6. The test tube filling and marking machine according to claim 5, characterized in that: The empty tube transfer mechanism includes a transfer cylinder and a tube clamping manipulator arranged at the output end of the transfer cylinder. The transfer cylinder drives the tube clamping manipulator to transfer the empty test tube between the discharge end of the second conveying trough and the turntable.

7. The test tube filling and marking machine according to claim 1, characterized in that: The capping mechanism is composed of a lifting cylinder, a rotating motor arranged at the output end of the lifting cylinder, and a capping clamp arranged at the output end of the rotating motor. The rotating motor drives the capping clamp to rotate to fix the bottle cap on the test tube.

8. The test tube filling and marking machine according to claim 7, characterized in that: The cap screwing mechanism is also provided with a bottle cap feeding assembly, which includes a vibration screening machine and a bottle cap transfer mechanism, which is arranged at the discharge end of the vibration screening machine, and the bottle cap transfer mechanism includes a translation cylinder and a cap removal clamp arranged at the output end of the translation cylinder, and the translation cylinder drives the cap removal clamp to transfer the bottle cap to the test tube mouth.

9. The test tube filling and marking machine according to claim 8, characterized in that: The capping mechanism also includes a fixing assembly, which consists of two push cylinders arranged on both sides of the test tube and a silicone pad arranged at the output end of the push cylinders. The two push cylinders jointly clamp and fix the test tube to be capped.