An automated pipette tip and its assembly method

Abstract

The present invention discloses an assembly device, aiming to provide an automated pipette tip and its assembly method. The key technical points of the solution include a pipette tip body. On the connection end of the pipette tip body, there are successively arranged an active ring plate, an outer corrugated section, a covering ring, a connecting body, and a lower support plate from the port towards the liquid storage end of the pipette tip. The outer corrugated section has elasticity, and the outer diameter of the outer corrugated section is in transition fit with the connection end of the pipette. Compared with the existing pipette tips, the automated pipette tip and its assembly method of the present invention truly achieve automated assembly, with relatively fast speed, high efficiency, good stability, good airtightness. Moreover, since the pipette tip has certain hygiene requirements, through automated assembly, there will no longer be some inevitable phenomenon of human secondary contamination, improving the hygiene requirements of the pipette tip. The present invention is applicable to the technical field of assembly devices.

Description

Technical Field

[0001] The present invention relates to an assembly device, and more specifically, to an automated pipette tip and an assembly method thereof. Background Art

[0002] A pipette tip is required in various chemical engineering, chemistry, biological research, etc. for experiments and production.

[0003] There are still some defects in the assembly process of the existing pipette tips: the existing pipette tips are often assembled manually. This manual assembly method is slow, inefficient, and has poor stability. Moreover, due to certain hygiene requirements for pipette tips, manual assembly will result in some inevitable secondary human contamination, which will affect the hygiene requirements of the pipette tips; in addition, the airtightness of the existing pipette tips themselves and the airtightness after manual assembly are relatively low, affecting the use. Summary of the Invention

[0004] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide an automated pipette tip and an assembly method thereof.

[0005] To achieve the above purpose, the present invention provides the following technical solutions: an automated pipette tip and an assembly method thereof, including a pipette tip body. On the connection end of the pipette tip body, a movable ring plate, an outer corrugated section, a coating ring, a connecting body, and a lower support plate are sequentially arranged from the port towards the pipette tip liquid storage end. The outer corrugated section has elasticity, and the outer diameter of the outer corrugated section is in transition fit with the connection end of the pipette.

[0006] The present invention is further provided as follows: a lower filling bladder is provided below the lower support plate, an inner expansion filling bladder is provided between the outer corrugated section and the connection end of the pipette tip body, a communication pipeline is provided between the lower filling bladder and the inner expansion filling bladder, and a one-way valve structure is provided between the communication pipelines. This one-way valve structure is used for one-way air intake from the lower filling bladder to the inner expansion filling bladder, and the communication pipeline penetrates through the lower support plate.

[0007] The present invention is further provided as follows: the width extension direction of the inner expansion filling bladder extends from the lower support plate towards the movable ring plate side. When the inner expansion filling bladder is not inflated, it is a circular ring coaxial with the outer diameter of the connection end of the pipette tip body.

[0008] The present invention is further provided as follows: an introduction inclined surface is provided on the movable ring plate, and the included angle between the introduction inclined surface and the end surface of the movable ring plate is between 90 degrees and 120 degrees.

[0009] The present invention is further provided as follows: the ratio between the thickness of the outer corrugated section and the width of the lower support plate is between 0.5 and 0.8.

[0010] The present invention is further configured such that: the filling material inside the inner expansion filling bladder is gas or liquid.

[0011] An assembly method for a high airtightness automatic pipette tip includes the following steps:

[0012] S1. Place the pipette tip body on the object picking table, and the mechanical pipette performs mechanical object picking on the pipette tip body.

[0013] S2. The movable ring plate forms a guide when the pipette presses down. Since there is an interference fit between the outer corrugated section and the connection end of the pipette, the outer corrugated section on the pipette tip body can be gradually incorporated into the connection end of the pipette.

[0014] S3. After completely incorporating the outer corrugated section into the connection end of the pipette, the pipette continues to press down. At this time, the lower filling bladder is pressed to inflate the inner expansion filling bladder, and the outer corrugated section expands outward under the pressure of the inner expansion filling bladder and forms an interference fit with the connection end of the pipette.

[0015] S4. Complete the installation connection between the pipette and the pipette tip body.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. Compared with the existing pipette tips, the automatic pipette tip and its assembly method of the present invention truly achieve automatic assembly, with relatively fast speed, high efficiency, and good stability. Moreover, since the pipette tip has certain hygiene requirements, through automatic assembly, there will no longer be some inevitable secondary human contamination phenomena, improving the hygiene requirements of the pipette tip.

[0018] 2. The automatic pipette tip and its assembly method of the present invention are provided with a lower filling bladder communicating with the inner expansion filling bladder under the lower support plate, so that when the automatic pipette tip is assembled, the inner expansion filling bladder expands by inflation, and the outer corrugated section expands outward under the pressure of the inner expansion filling bladder, thereby making the airtightness better after assembly and the connection more stable at the same time.

[0019] 3. By setting a one-way valve structure between the communication pipes, the lower filling bladder can only maintain one-way air intake when inflating the inner expansion filling bladder and will not leak air, which is beneficial to enhancing the airtightness.

[0020] 4. The structure of the present invention is simple, easy to manufacture, and easy to operate, and is suitable for popularization and implementation. Description of the Drawings

[0021] Figure 1 It is a structural diagram of the automatic pipette tip and its assembly method of the present invention.

[0022] Reference numerals in the drawings: 1, suction head body; 2, movable ring plate; 3, outer corrugated section; 4, covering ring; 5, connecting body; 6, lower support plate; 7, lower filling bladder; 8, inner expanding filling bladder; 9, communicating pipe; 10, one-way valve structure.

Claims

1. An automated pipette tip, comprising a tip body (1), characterized in that, on the connecting end of the tip body (1), a movable ring plate (2), an outer corrugated section (3), a covering ring (4), a connecting body (5), and a lower support plate (6) are sequentially arranged from the port towards the liquid storage end of the tip. The outer corrugated section (3) is elastic, and the outer diameter of the outer corrugated section (3) has an interference fit with the connecting end of the pipette; below the lower support plate (6), there is a lower filling bladder (7), an inner expanding filling bladder (8) arranged between the outer corrugated section (3) and the connecting end of the tip body (1), a connecting pipe (9) arranged between the lower filling bladder (7) and the inner expanding filling bladder (8), and a one-way valve structure (10) arranged between the connecting pipes (9). This one-way valve structure (10) is used for one-way air intake from the lower filling bladder (7) to the inner expanding filling bladder (8), and the connecting pipe (9) penetrates through the lower support plate (6).

2. An automated pipette tip according to claim 1, characterized in that, the width extension direction of the inner expanding filling bladder (8) extends from the lower support plate (6) towards the side of the movable ring plate (2). When the inner expanding filling bladder (8) is not inflated, it is a circular ring coaxial with the outer diameter of the connecting end of the tip body (1).

3. An automated pipette tip according to claim 1, characterized in that, the movable ring plate (2) is provided with an inlet inclined surface, and the included angle between the inlet inclined surface and the end face of the movable ring plate (2) is between 90 degrees and 120 degrees.

4. An automated pipette tip according to claim 1, characterized in that, the ratio between the thickness of the outer corrugated section (3) and the width of the lower support plate (6) is between 0.5 and 0.

8.

5. An automated pipette tip according to claim 1, characterized in that, the filling material inside the inner expanding filling bladder (8) is gas or liquid.

6. An assembly method for an automated pipette tip applicable to any one of the above claims 1 - 5, characterized in that, it includes the following steps: S1. Place the tip body (1) on the picking table, and the mechanical pipette picks up the tip body (1) mechanically; S2. The movable ring plate (2) forms a guide when the pipette is pressed down. Because there is an interference fit between the outer corrugated section (3) and the connecting end of the pipette, the outer corrugated section (3) on the tip body (1) can be gradually incorporated into the connecting end of the pipette; S3. After the outer corrugated section (3) is completely incorporated into the connecting end of the pipette, the pipette continues to be pressed down. At this time, the lower filling bladder (7) is pressed to inflate into the inner expanding filling bladder (8), and the outer corrugated section (3) expands outward under the pressure of the inner expanding filling bladder (8) and forms an interference fit with the connecting end of the pipette; S4. Complete the installation connection between the pipette and the tip body (1).

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