peristaltic syringe pump and its consumables

Abstract

Peristaltic syringe pump allowing precise dosing of one or more products with differential and variable mixing of the different products. Machine implementing the process and its consumables. Figure for the abbreviation: Figures 1 and 2

Description

Title of the invention: Peristaltic syringe pump and its consumable technical field

[0001] The invention relates to a peristaltic dosing pump and its disposable consumable, enabling high-precision dispensing with one or more products. Prior Art

[0002] Dosing pumps are used in various fields to deposit quantities of product onto different supports

[0003] These pumps are used for industrial applications in the field of bonding, and in medical applications, particularly in 3D printing.

[0004] Most of the time these pumps are in the form of a syringe operated by a screw for dosing the deposited product

[0005] The drawback of this technology is that the product is compressed in the syringe, giving it a certain inertia, which implies reverse movements to compensate, thus impairing the accuracy of the dispensing.

[0006] Moreover, current systems are quite difficult to automate in terms of product changeover Description of the invention

[0007] The object of the invention presented is to overcome these various drawbacks. It aims in particular at precise deposition of the material, whether it is single-component, two-component, or even more complex, and regardless of its viscosity.

[0008] With a flow rate accuracy and resolution of 0.007 mm3 and a product mixing accuracy of 0.01% in the case of a multi-component product, even with different viscosities

[0009] The present disclosure consists of an annular peristaltic pump without the main component, i.e. the pumping tube, being integrated therein.

[0010] This pumping tube is integrated into the consumable syringe, which ensures that a new and sterile device is always available regardless of the product used.

[0011] This syringe device allows one or more products to be dosed in various dimensions and volumes.

[0012] Moreover, the process allows for very simple and very quick product changes, for example with a robot, which normally requires a more or less complicated intervention as well as a fastening system. Brief description of the figures

[0013] The invention will be better understood and other features and advantages will become apparent upon reading the following description, the description referring to the accompanying drawings, among which:

[0014] - Fig. 1 is an overview of a pump and its single-use consumable component

[0015] - Figure 2 is an overview of a pump and its two-component consumable.

[0016] - the [Fig.3] view of a single-component consumable

[0017] - the [Fig.4] view of a two-component consumable

[0018] - the [Fig.5] eccentric peristaltic on consumable

[0019] - the [Fig.6] exploded view of the non-component pump

[0020] - the [Fig.7] exploded view of the multi-component pump

[0021] - the [Fig.8] continuous supply of product Detailed description

[0022] The invention shown in [Fig. 1] consists of a consumable [Fig. 3] for dispensing a fluid product and the mechanism for implementing it.

[0023] It allows, on the same principle, the precise application and dosing of multiple products [Fig.2] Consumable description and advantages

[0024] The consumable which is the main part of this disclosure [Fig.3]

[0025] Is composed of a body (3.2) intended to contain the product to be distributed, of a anti-rotation guide device (3.4) of a free scraper piston (3.1) which will follow the product level by vacuum in order to prevent contamination of the product by any external agent and complete drainage of the product

[0026] The peristaltic principle [Fig.5] is obtained by the eccentricity of the tube (5.2) on the consumable (5.3) and compression of the tube by the circular movement of the rollers (5.3)

[0027] The principle is identical for a multi-product consumable [Fig.4] which can be composed of several product storage spaces as well as several peristaltic tubes (4.3) and several scraper pistons (4.1)

[0028] In the context of a multi-product consumable, the invention allows for very precise dosing of the different products as well as the possibility of continuously modulating the dosage of the products.

[0029] The invention also allows for a continuous supply of product [Fig. 8] by feeding through the scraper piston (8.1), which thereby becomes a pressure buffer in the reservoir. The principle is identical for a multi-product device.

[0030] The advantage of continuous supply [Fig.8] is always having an economical and new consumable for the application of the products

[0031] The peristaltic tube (3.3-4.3) being an integral part of the consumable, the device is always clean and new, even sterile, which represents a definite advantage.

[0032] Since the tube in a conventional peristaltic pump is a wear part and normally requires cleaning when changing the product, this is a very important advantage, particularly for use in the medical field. The pump mechanism

[0033] The pump mechanism [Fig.6] and [Fig.7]

[0034] Is composed of the following elements:

[0035] One or more servo motors (6.2-7.2) allowing precise computer-controlled drive

[0036] On which is mounted a drive pinion (6.5-7.8)

[0037] Which pinion drives the roller cage (6.6-7.5), the roller which compresses the tube according to [Fig. 5] in order to obtain the desired peristaltic effect

[0038] The various roller cages are held in place by a rotation guide device such as a ball bearing or other (6.4-7.4-7.6)

[0039] And held in place in a container (6.3-6.7-7.3-7.7) or other allowing the various components to be held in place and the consumable (6.1-7.1) to be guided and held in place

Claims

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10. Demands A dosing pump method in which the peristaltic tube component (3.3-4.3) is an integral part of the consumable, according to the principle of Figure 5 or a similar principle. Principle of consumable ingesting as the main element the peristaltic tube (3.3-4.3) of the peristaltic pump Consumable principle according to the preceding claims, which may have a plurality of product reservoirs, a plurality of circuits and a plurality of peristaltic tubes (3.3-4.3) Principle of consumable ingesting one or a plurality of free pistons (3.1-4.1) for the purposes of level monitoring and sealing against external agents Principle of consumable ingesting an anti-rotation guidance system (3.4-4.4) The consumable principle according to the preceding claims is that the consumable is continuously supplied according to Figure 8 by one or a plurality of products Consumable principle according to claim 6 that the piston (8.1) performs the function of a filling buffer A dosing pump method according to the preceding claims, wherein the peristaltic rollers are annular (6.6-7.5) A method according to any one of the preceding claims, wherein several levels of peristaltic rollers (7.5) can be stacked for a plurality of products to be deposited A method according to any one of the preceding claims wherein the plurality of peristaltic rollers (7.5) are driven by a plurality of motors (7.2) for the purpose of precise and variable differential dosing of the products

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