Cylinder body sealing structure and additive manufacturing equipment

Abstract

The utility model discloses a cylinder body sealing structure which comprises a cavity bottom plate, a cylinder body, an air bag, an inert gas supply mechanism and an adapter plate, an upper flange is arranged above the cylinder body, the lower surface of the cavity bottom plate is attached to the upper surface of the adapter plate, and the cavity bottom plate is connected with the adapter plate; an annular groove is formed in the lower surface of the adapter plate, and the air bag is installed in the annular groove. The upper flange is attached to the lower surface of the adapter plate, and the upper flange is connected with the adapter plate; the inert gas supply mechanism is connected with the air bag and used for filling inert gas into the air bag so that the air bag can be expanded to be attached to the upper flange. The utility model further discloses additive manufacturing equipment which comprises the cylinder body sealing structure. The air bag is inflated and expanded to be tightly attached to the upper flange of the cylinder body, so that the sealing of the joint between the adapter plate and the cylinder body is ensured, the sealing effect is good, the structure is simple, the manufacturing cost is low, and the practicability is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of additive manufacturing, and in particular relates to a cylinder sealing structure and additive manufacturing equipment. Background Art

[0002] The sealing method of the cylinder in the existing additive manufacturing equipment is: Figure 2 As shown, a sealing gasket 4' is arranged between the upper flange 3' of the cylinder body 2' and the cavity bottom plate 1', and an electric cylinder is connected to the bottom of the cylinder body 2', which can push the cylinder body 2' up and down. When the cylinder body 2' and the cavity bottom plate 1' are sealed, the electric cylinder needs to continuously output a stable torque to ensure that the cylinder body 2' has an upward lifting force, so that the sealing gasket 4' is effectively pressed between the upper flange 3' of the cylinder body 2' and the cavity bottom plate 1' to ensure the sealing effect. This sealing method has the following shortcomings: first, the electric cylinder needs to provide a stable holding torque during the entire printing process; second, the entire lifting mechanism corresponding to the electric cylinder itself requires a certain positioning accuracy, and the electric cylinders on both sides below the cylinder body 2' need to keep the lifting torque synchronized. Therefore, this sealing method tends to be complex in structure and slightly costly, which is not conducive to the practical application of printing equipment. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a cylinder sealing structure. The utility model ensures the sealing of the joint between the adapter plate and the cylinder body by inflating the airbag to fit tightly with the upper flange of the cylinder body. The sealing effect is good, the structure is simple, the manufacturing cost is low, and the practicability is strong.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a cylinder sealing structure, including a cavity bottom plate, a cylinder body, an airbag, an inert gas supply mechanism and an adapter plate, an upper flange is provided on the top of the cylinder body, the lower surface of the cavity bottom plate is fitted with the upper surface of the adapter plate, and the cavity bottom plate is connected to the adapter plate; an annular groove is provided on the lower surface of the adapter plate, and the airbag is installed in the annular groove; the upper flange is fitted with the lower surface of the adapter plate, and the upper flange is connected to the adapter plate; the inert gas supply mechanism is connected to the airbag, and is used to fill the airbag with inert gas so that the airbag expands to fit with the upper flange.

[0005] Furthermore, an inner stop is provided on the lower surface of the cavity bottom plate, and the adapter plate is installed at the inner stop.

[0006] Furthermore, the cavity bottom plate is provided with an annular sealing groove at the inner stop, a sealing ring is installed in the annular sealing groove, and the cavity bottom plate and the adapter plate are sealed by the sealing ring.

[0007] Furthermore, a side opening communicating with the annular groove is provided on the side surface of the adapter plate, a gas nozzle is installed at the side opening, and the inert gas supply mechanism is connected to the airbag via the gas nozzle.

[0008] Preferably, the cavity bottom plate and the adapter plate are connected by bolts or screws.

[0009] Preferably, the adapter plate and the upper flange are connected by bolts or screws.

[0010] An additive manufacturing device comprises the cylinder sealing structure.

[0011] The beneficial effects of the utility model are as follows: the upper flange of the cylinder body of the utility model is connected to the cavity bottom plate through an adapter plate, and an annular groove is provided on the adapter plate, and an airbag is installed in the annular groove, and the airbag is inflated to make the airbag and the upper flange of the cylinder body fit tightly to ensure the sealing at the joint between the adapter plate and the cylinder body, and the sealing effect is good, which ensures that the printing process is more reliable, and the structure is simple, the manufacturing cost is low, and the practicality is strong. The utility model realizes the connection between the cavity bottom plate and the upper flange through the adapter plate. This connection method can effectively reduce the manufacturing cost, avoid the problem of increased manufacturing cost caused by directly setting an annular groove on the cavity bottom plate, and facilitate the flexible transformation of the later structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a cross-sectional view of the utility model;

[0014] Figure 2 It is a cross-sectional view of the prior art.

[0015] The above reference numerals:

[0016] 1. Cavity bottom plate; 2. Adapter plate; 3. Upper flange; 4. Cylinder body; 5. Air bag; 6. Air nozzle; 101. Annular sealing groove; 201. Side opening. DETAILED DESCRIPTION

[0017] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the accompanying drawings. The accompanying drawings show preferred embodiments of the present invention.

[0018] like Figure 1As shown, a cylinder sealing structure provided in this embodiment includes a cavity bottom plate 1, a cylinder body 4, an airbag 5, an inert gas supply mechanism and an adapter plate 2, an upper flange 3 is provided above the cylinder body 4, the lower surface of the cavity bottom plate 1 is in contact with the upper surface of the adapter plate 2, and the cavity bottom plate 1 is connected to the adapter plate 2; an annular groove is provided on the lower surface of the adapter plate 2, and the airbag 5 is installed in the annular groove; the upper flange 3 is in contact with the lower surface of the adapter plate 2, and the upper flange 3 is connected to the adapter plate 2; the inert gas supply mechanism is connected to the airbag 5, and is used to fill the airbag 5 with inert gas, so that the airbag 5 expands to fit with the upper flange 3.

[0019] In this embodiment, the upper flange 3 of the cylinder body 4 is connected to the cavity bottom plate 1 through the adapter plate 2, and the adapter plate 2 is provided with an annular groove, and an airbag 5 is installed in the annular groove. The airbag 5 is inflated to make the airbag 5 fit tightly with the upper flange 3 of the cylinder body 4 to ensure the sealing at the joint between the adapter plate 2 and the cylinder body 4. The sealing effect is good, which ensures that the printing process is more reliable. In addition, the structure is simple, the manufacturing cost is low, and the practicability is strong.

[0020] In this embodiment, the connection between the cavity bottom plate 1 and the upper flange 3 is achieved through the adapter plate 2. This connection method can effectively reduce the manufacturing cost, avoid the problem of increased manufacturing cost caused by directly setting an annular groove on the cavity bottom plate 1, and facilitate flexible changes in the subsequent structure.

[0021] In this embodiment, the airbag 5 is inflated and closely fits with the upper flange 3 of the cylinder body 4 to achieve a sealing effect, so there is no need to configure an electric cylinder under the cylinder body 4 to keep the cylinder body 4 with an upward lifting force. In this embodiment, the cylinder body 4 only needs to remain stationary during the entire printing process.

[0022] In this embodiment, the inert gas supply mechanism includes a gas storage tank, a gas delivery pipeline, etc. The inert gas supply mechanism is a conventional configuration mechanism of existing additive manufacturing equipment and is a prior art, so it will not be described in detail.

[0023] In this embodiment, the lower surface of the cavity bottom plate 1 is preferably provided with an inner stop, and the adapter plate 2 is installed at the inner stop. Under the action of the inner stop, the positioning function of the adapter plate 2 and the cavity bottom plate 1 is realized, and the installation accuracy of the adapter plate 2 and the cavity bottom plate 1 is ensured.

[0024] In this embodiment, the cavity bottom plate 1 is preferably provided with an annular sealing groove 101 at the inner stop, a sealing ring is installed in the annular sealing groove 101, and the cavity bottom plate 1 and the adapter plate 2 are sealed by the sealing ring. Under the action of the sealing ring, the cavity bottom plate 1 and the adapter plate 2 are sealed.

[0025] In this embodiment, the side of the adapter plate 2 is preferably provided with a side opening 201 communicating with the annular groove, and a gas nozzle 6 is installed at the side opening 201, and the inert gas supply mechanism is connected to the airbag 5 through the gas nozzle 6. The gas nozzle 6 and the inert gas supply mechanism are connected through a gas delivery pipeline.

[0026] Preferably, in this embodiment, the cavity bottom plate 1 and the adapter plate 2 are connected by bolts or screws.

[0027] Preferably, in this embodiment, the adapter plate 2 and the upper flange 3 are connected by bolts or screws.

[0028] An additive manufacturing device includes the cylinder sealing structure. Of course, the additive manufacturing device also includes other conventional configuration mechanisms, which will not be described in detail here.

[0029] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. The utility model may have various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A cylinder sealing structure, characterized in that: It comprises a cavity bottom plate (1), a cylinder body (4), an air bag (5), an inert gas supply mechanism and an adapter plate (2), wherein an upper flange (3) is provided above the cylinder body (4), the lower surface of the cavity bottom plate (1) is in contact with the upper surface of the adapter plate (2), and the cavity bottom plate (1) is connected to the adapter plate (2); The lower surface of the adapter plate (2) is provided with an annular groove, and the airbag (5) is installed in the annular groove; the upper flange (3) is in contact with the lower surface of the adapter plate (2), and the upper flange (3) is connected to the adapter plate (2); the inert gas supply mechanism is connected to the airbag (5) and is used to fill the airbag (5) with inert gas so that the airbag (5) expands until it is in contact with the upper flange (3).

2. The cylinder sealing structure according to claim 1, characterized in that: The lower surface of the cavity bottom plate (1) is provided with an inner stop, and the adapter plate (2) is installed at the inner stop.

3. The cylinder sealing structure according to claim 2, characterized in that: The cavity bottom plate (1) is provided with an annular sealing groove (101) at the inner stop, a sealing ring is installed in the annular sealing groove (101), and the cavity bottom plate (1) and the adapter plate (2) are sealed by the sealing ring.

4. The cylinder sealing structure according to claim 1, characterized in that: A side opening (201) communicating with the annular groove is provided on the side surface of the adapter plate (2); a gas nozzle (6) is installed at the side opening (201); and the inert gas supply mechanism is connected to the air bag (5) via the gas nozzle (6).

5. The cylinder sealing structure according to claim 1, characterized in that: The cavity bottom plate (1) and the adapter plate (2) are connected via bolts or screws.

6. The cylinder sealing structure according to claim 1, characterized in that: The adapter plate (2) and the upper flange (3) are connected via bolts or screws.

7. An additive manufacturing device, characterized in that: It comprises the cylinder sealing structure as described in any one of claims 1 to 6.

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