RU128733U1 - PLANT FOR PROTOTYPING PRODUCTS FROM PHOTOPOLYMERIC MATERIALS - Google Patents

Abstract

Installation for prototyping products made of photopolymer materials, comprising a housing, an industrial projector with a focusing lens, a bath for photopolymer, a design plate for forming products on it, and a linear displacement means, while the design plate is made with through perforation and fixed on a linear displacement means with the possibility of vertical reciprocating movement relative to the bath, characterized in that the projector is located under the bath, and the projection plate races laid with the possibility of forming products on its lower surface and is equipped with locking elements in the form of bushings with flanges located on the side of its outer surface in the holes of the plate.

Description

The utility model relates to the field of engineering, in particular, to the creation of parts by the method of layer-by-layer hardening of the polymer based on the virtual 3d model and can be used, for example, for the manufacture of prototypes of models and objects, the manufacture of models and molds for foundry from photopolymer materials.

The prior art installation for the rapid production of complex prototypes of parts by the method of layer-by-layer hardening of polymers. Such devices and, in particular, the prototype installation selected as the closest analogue, has an arrangement in which the projector is located above the working area, the platform on which the hardened prototype is mounted, is lowered perpendicular to the ground, and the tank with photopolymer is located under the working area. Also, the bath in which the hardening takes place has a special design, it has a lid, which is a glass enclosed in a metal frame, the adhesion of which hardened photopolymer secures the prototype in the working area (CAD and Graphics Magazine, issue 12, 2010, p. 58-59, email: http://www.sapr.ru/article.aspx?id=21883&iid=999).

The described design features lead to the following disadvantages:

- The projector located in the upper part of the installation has a large mass, its location relative to the center of mass of the installation can lead to the rollover of the installation, which complicates the maintenance of the installation and generally implies higher requirements for the entire structure as a whole, which ultimately leads to an increase in the cost of production of such installations.

- A tank filled with a photopolymer does not have adaptive control that would allow the curing process of the prototype to continue even though the photopolymer in the working area is over. In fact, if the photopolymer ends at the required level during curing, the process stops. At the same time, there is still enough polymer in the tank to complete the task.

- The speed of the manufacturing process of the solid layer of the product increases due to the need for constant alignment of the upper level of the polymer with additional movement of the design plate.

- The design of the bath with a glass cover is not a guarantee of one hundred percent fixing of the prototype in the working area. The implementation of the fixing of the prototype by sticking in some cases leads to the fact that the prototype is not fixed on the glass, for example, due to its insufficient purity or vice versa - it sticks so much that attempts to remove it from the working area lead to damage to the surface of the prototype. At the same time, the process of accurate extraction is time consuming.

The technical result achieved by the implementation of the claimed utility model consists in creating such a design for a prototyping installation of products made of photopolymer material, which provides ease of maintenance, increased operational safety with simultaneous increase in productivity, continuous hardening of the polymer, and also simplifies the process of extracting the prototype from the working area . This installation design allows you to quickly produce products of complex configuration.

The specified technical result is achieved by the fact that the installation for prototyping products from photopolymer materials comprises a housing, an industrial projector with a focusing lens, a bath for photopolymer, a design plate for forming products on it, and a linear displacement means, while the design plate is made with through perforation and fixed on a linear displacement means with the possibility of vertical reciprocating movement relative to the bath, according to the useful of the first model, the projector is located under the bathtub, and the projection plate is located with the possibility of forming products on its lower surface and is equipped with fixing elements in the form of bushings with flanges located on the outer surface in the plate openings.

The essence of the claimed installation is illustrated by graphic materials, where:

- figure 1 and figure 2 shows the construction in two isometric views of the installation;

- figure 3 and figure 4 - the design of the linear displacement module (hereinafter MLP) in 2 isometric views;

- figure 5 is a design of the lower surface of the design plate;

- Fig.6 is a section aa of Fig.5, a fixing element in the form of a sleeve with flanges.

Installation for prototyping products from photopolymer material contains:

1. The frame;

2. The scarf;

3. The carrier plate;

4. The tank is topping up;

5. Electric installation plate;

6. The plate is design;

7. Bath;

8. Projector;

9. Support propeller;

10. Electric motor;

11. Bracket;

12. Running screw with nut assembly;

13. Guides;

14. Sleeve with flange.

The prototyping installation is arranged on the basis of the frame 1 (see figure 1), assembled from a modular aluminum profile in a vertical design. In the lower part of the installation frame 1, a projector 8 is fixed so that a ray of light hits up; bath 7, equipped with a glass bottom and mounted on a supporting plate 3 above the projector 8; a refill tank 4 is installed in the lower part of the frame 1 behind the projector 8 in the rear of the installation; on the carrier plate 3 with the help of two kerchiefs 2, the support 9 of the running screw 12 is fixed, the guides 13 and the running screw 12 are placed on it; the running screw 12 is connected to the electric motor 10. Along the guides 13, by converting the rotational movement of the running screw 12 to the translational, the bracket 11 moves, with the design plate 6 fixed on it.

Installation for prototyping products from photopolymer materials works as follows.

Bath 7 is filled with photopolymer coming from the tank 4 topping up. The electric motor 10 drives the screw 12 running with the nut assembly, due to its design, the nut and screw 12 convert the rotational motion into translational motion of the bracket 11, with the design plate 6 fixed to it. The bracket 11, moving along the guides 13, lowers the design plate 6 into the bath 7 until it takes up the starting working position. As soon as the design plate 6 occupies the starting operating position, the projector 8 is automatically turned on, which starts emitting light rays of a given intensity.

Before starting work using a special movable bracket, the position of the projector 8 is adjusted, which ensures the optimal illumination mode of the surface of the photopolymer layer.

The light beam illuminates the surface of the initial layer of the photopolymer and hardens it on the design plate 6 due to the glass bottom of the bath 7, which transmits the light of the projector 8. Moreover, the initial layer is fixed due to bushings 14 mounted on the plate 6 with flanges made, for example, from the same photopolymer as the prototype being created. This solution allows the prototype to easily fix on the design plate 6 without the risk of damage or non-fixing of the prototype.

After the curing of the photopolymer layer, the design plate 6 is moved to a predetermined layer pitch, thereby allowing the transition to exposure and hardening of the next layer. This process is repeated until all layers of the prototype are illuminated.

After that, the bracket 11, moving vertically upward by rotating the lead screw 12 and the nut assembly along the guides 13, transfers the prototype from the working area to the service area, in which the installation operator, removing the mounting sleeves 14 with flanges, can easily take out the prototype from installation.

If during the process of illuminating the layers of the prototype the level of the liquid photopolymer falls below the minimum acceptable level, the supply of the missing amount of liquid from the refill tank 4 is carried out, eliminating, therefore, the need to stop the prototyping process and damage the prototype, and thus performing the adaptive control function fluid level in the bathroom 7.

Installation nodes are managed automatically. The control software is installed on a personal computer that connects to the installation via standard connection interfaces.

PMO allows you to control the intensity and frequency of exposure, the pitch of the photopolymer layer, the speed of movement of the vertical movement mechanism, turning on and off the additional supply of the photopolymer from the refill tank 4.

The power supply of the installation is carried out from a standard outlet.

Based on computer simulation, it was found that the described design allows for ease of maintenance, increased operational safety, increased productivity, introduced continuous polymer hardening, and simplified prototype extraction from the work area.

The analysis of the claimed technical solution for compliance with the conditions of patentability showed that the characteristics indicated in the formula are essential and interconnected with the formation of a stable combination of the necessary features unknown at the priority date from the prior art sufficient to obtain the required synergetic (super-total) technical result.

The properties regulated in the claimed compound by individual features are well known in the art and require no further explanation.

Thus, the above information indicates the fulfillment of the following set of conditions when using the claimed technical solution:

- the object embodying the claimed technical solution, in its implementation is intended for use in the field of industrial design and can be used in the manufacture of polymer prototypes;

- for the claimed object in the form described in the formula of the utility model, the possibility of its implementation using the means and methods known from the prior art on the priority date on the priority date has been confirmed;

- the object embodying the claimed technical solution, when implemented, is able to ensure the achievement of the technical result perceived by the applicant.

Therefore, the claimed subject matter meets the requirements of patentability “novelty” and “industrial applicability” under applicable law.

Claims (1)

Installation for prototyping products made of photopolymer materials, comprising a housing, an industrial projector with a focusing lens, a bath for photopolymer, a design plate for forming products on it, and a linear displacement means, while the design plate is made with through perforation and fixed on a linear displacement means with the possibility of vertical reciprocating movement relative to the bath, characterized in that the projector is located under the bath, and the projection plate races laid with the possibility of forming products on its lower surface and is equipped with locking elements in the form of bushings with flanges located on the side of its outer surface in the holes of the plate.

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