Printer and sealing body pressing unit and sealing device thereof

Abstract

The printer, the sealing body pressing unit and the sealing device of the printer comprise a fixing mechanism and a plurality of elastic bodies, the elastic bodies are embedded in the fixing mechanism, and the fixing mechanism abuts against a sealing body. By means of reasonable arrangement of component structures, integral forming and easy structure implementation, an original installation mode is changed, external centralized assembly is adopted and then is directly used for pressing a sealing body for sealing, modular splicing is achieved, and the installation process is simple in procedure and high in efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of 3D printing forming cylinder sealing, and in particular relates to a printer and a sealing body pressing unit and a sealing device thereof. Background Art

[0002] Felt sealing is the most common way of sealing the existing 3D metal printing forming cylinder. However, the felt needs to be installed in the forming cylinder during the installation process. The felt requires multiple springs to squeeze the felt to ensure that the felt is completely in contact with the wall of the forming cylinder. At the same time, the felt and springs need to be installed one by one in the cylinder body. As the size of the forming cylinder becomes larger and larger, installing the felt and springs will become a very arduous task. Summary of the invention

[0003] In view of the above problems, the purpose of the utility model is to provide a printer and its sealing body clamping unit and sealing device. Through the reasonable arrangement of the component structure, the overall one-piece molding is easy to implement, and the original installation method is changed. The external centralized assembly is used directly to compress the sealing body seal, realizing modular splicing, and the installation process is simple and efficient.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model includes:

[0005] A sealing body pressing unit of a printer comprises a fixing mechanism and a plurality of elastic bodies, wherein the plurality of elastic bodies are embedded in the fixing mechanism, and the fixing mechanism abuts against the sealing body.

[0006] Preferably, the elastic body is a spring, a U-shaped or a V-shaped elastic body.

[0007] Preferably, the fixing mechanism includes an elastic body fixing component and a sealing body push plate, each elastomer is located between the elastic body fixing component and the sealing body push plate, and the sealing body push plate and the elastic body fixing component are limitedly movably connected along the compression / extension direction of the elastic body.

[0008] Preferably, the compression / stretching directions of the elastic bodies are parallel, and the elastic bodies are limited on the elastic body fixing component. One side of the sealing body push plate contacts the free end of each elastic body, and the other side of the sealing body push plate is the sealing body pressing surface.

[0009] Preferably, the elastomer fixing component includes an elastomer fixing plate, which is parallel to the sealing body push plate; a plurality of elastomer fixing shafts are provided on one side of the elastomer fixing plate, and each elastomer is sequentially sleeved on each elastomer fixing shaft, and the free length of the elastomer is greater than the length of the elastomer fixing shaft.

[0010] Preferably, the elastic body fixing component and the sealing body push plate are connected by a pressure plate, which is fixed above the elastic body fixing plate and the sealing body push plate and fixes the position between the elastic body fixing plate and the sealing body push plate along the axial direction of the elastic body fixing axis.

[0011] Preferably, the elastic body fixing plate and the pressing plate are relatively fixed, the sealing body push plate can slide along the axial direction of the elastic body fixing axis with limited position, and the sealing body push plate is always in contact with the free ends of each elastic body.

[0012] Preferably, the contact surface between the sealing body push plate and the elastic body is provided with at least two push plate fixing protrusions, and the push plate fixing protrusion is provided with a third through hole; the pressure plate is provided with a plurality of limit strip holes corresponding to the third through holes, the length direction of the limit strip holes is consistent with the length direction of the fixed axis of the elastic body, and a fixed axis is passed through each group of third through holes and the limit strip holes; at least two second through holes are provided on the elastic body fixing plate, and the pressure plate is provided with a plurality of first through holes corresponding to the second through holes, and a fixed axis is passed through each group of first through holes and second through holes.

[0013] A sealing device for a printer comprises a pressing unit, which is the sealing body pressing unit of the printer disclosed in the utility model, and also comprises a sealing body abutting against a fixing mechanism.

[0014] A printer comprises a molding cylinder and four sealing devices, wherein the sealing devices are the sealing devices of the printer disclosed in the utility model, the sealing bodies of the sealing devices are arranged close to the side of the molding cylinder, and the sealing devices are of equal length to the side of the molding cylinder; an angular extrusion sealing component is connected between the ends of two adjacent sealing devices, each angular extrusion sealing component matches the four corner structures of the molding cylinder, and the elastic body of each sealing device is in a compressed state.

[0015] Compared with the prior art, the advantages of the utility model are:

[0016] (1) The clamping unit of the printer of the utility model is formed as a whole through reasonable arrangement of the component structure, and the structure is easy to implement. It changes the original installation method and adopts external centralized assembly and then directly used to clamp the sealing body to seal, thus realizing modular splicing. The installation process is simple and efficient.

[0017] (2) The clamping unit and sealing device of the printer of the present invention, through the reasonable arrangement of the component structure, compresses the elastic body fixing component so that the distance between the elastic body fixing component and the sealing body push plate is shortened. At this time, each elastomer is in a compressed state, and the elastic body gives a reverse thrust to the sealing body push plate, so that the elastic body compresses the sealing body, thereby achieving a sealing effect.

[0018] (3) The clamping unit and sealing device of the printer of the utility model, through the reasonable arrangement of the component structure, each elastic body fixing shaft is evenly arranged on one side of the elastic body fixing plate, that is, each elastic body is evenly arranged, so that when each elastic body is in a compressed state, the reverse thrust given to the sealing body push plate is more uniform and stable, so that the sealing effect of the clamping unit pressing the sealing body is better.

[0019] (4) The printer of the present invention, through the reasonable arrangement of the component structure, first puts a circle of sealing bodies around the forming cylinder, and connects each clamping unit through an angle extrusion sealing component. At this time, the distance between the elastic body fixing component and the sealing body push plate is shortened, and each elastomer is in a compressed state. The elastic body gives a reverse thrust to the sealing body push plate, so that the elastic body presses the sealing body to achieve a sealing effect; the overall structure is easy to implement, and the original installation method is changed. It adopts external centralized assembly and then directly used to compress the sealing body to seal, realizing modular splicing. The installation process is simple and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the accompanying drawings:

[0021] Figure 1 It is a schematic diagram of the split structure of the pressing unit and the sealing device;

[0022] Figure 2 for Figure 1 Assembly diagram of

[0023] Figure 3 for Figure 1 Schematic diagram of the structure of the sealing device assembled in the forming cylinder.

[0024] The symbols in the figure represent:

[0025] 0 sealing body; 1 pressing plate, 1-1 first through hole, 1-2 limiting strip hole; 2 elastic body fixing component, 2-1 elastic body fixing plate, 2-10 second through hole, 2-2 elastic body fixing shaft; 3 elastic body; 4 sealing body push plate, 4-1 push plate fixing protrusion, 4-10 third through hole.

[0026] A sealing device; B angle extrusion sealing component; C forming cylinder DETAILED DESCRIPTION

[0027] The utility model is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical solution of this application fall within the protection scope of the utility model.

[0028] It should be noted that the directional terms mentioned in this article, such as "axial" and "length", are consistent with the specific directions on the paper in the drawings of the specification or the corresponding directions in the space shown in the drawings; all components and equipment in this utility model, unless otherwise specified, are all components and equipment known in the prior art.

[0029] Example 1

[0030] like Figure 1 and Figure 2As shown, this embodiment discloses a pressing unit of a printer, a fixing mechanism and a plurality of elastic bodies 3, wherein the plurality of elastic bodies 3 are embedded in the fixing mechanism, and the fixing mechanism abuts against a sealing body 0;

[0031] Its function is: when it is applied to the sealing device, the fixing mechanism is used to carry the entire compression unit, limit the multiple elastomers 3 therein and realize the compression and sealing of the sealing body. The whole is integrally formed, the structure is easy to implement, and the original installation method is changed. It is assembled externally and then directly used to compress the sealing body to seal, realizing modular splicing. The installation process is simple and efficient.

[0032] The elastic body 3 of this embodiment can be selected as a spring, a U-shaped or a V-shaped elastic body.

[0033] Specifically, the fixing mechanism includes an elastic body fixing component 2 and a sealing body push plate 4, each elastic body 3 is located between the elastic body fixing component 2 and the sealing body push plate 4, and the sealing body push plate 4 is movably connected with the elastic body fixing component 2 in a limited position along the compression / extension direction of the elastic body 3;

[0034] Its function is as follows: the elastomer fixing component 2 is used to limit and fix the elastomer 3. When it is applied to the sealing device, the elastomer fixing component 2 is pressed so that the distance between the elastomer fixing component 2 and the sealing body push plate 4 is shortened. At this time, each elastomer 3 is in a compressed state, and each elastomer 3 gives a reverse thrust to the sealing body push plate 4, so that the elastomer 3 presses the sealing body 0 to achieve a sealing effect.

[0035] Specifically, the axes of the elastic bodies 3 are parallel, and one end of each elastic body 3 is limited on the elastic body fixing member 2, one side of the sealing body push plate 4 contacts the free end of each elastic body 3, and the other side of the sealing body push plate 4 is the sealing body 0 pressing surface;

[0036] Its function is: the elastomer fixing component 2 limits and fixes one end of the elastomer 3 parallel to each axis. At this time, the elastomer 3 is restricted and cannot fly out, and the elastomer 3 is also in a non-compressed / stretched state in the free state. When it is applied to the sealing device, the elastomer fixing component 2 is compressed to shorten the distance between the elastomer fixing component 2 and the sealing body push plate 4. At this time, each elastomer 3 is in a compressed state, and each elastomer 3 gives a reverse thrust to the sealing body push plate 4, so that the elastomer 3 presses the sealing body 0 to achieve a sealing effect; the overall structure is easy to implement, which changes the original installation method, adopts external centralized assembly and then directly uses it to compress the sealing body 0 for sealing, realizes modular splicing, and the installation process is simple and efficient.

[0037] Specifically, the elastic body fixing component includes an elastic body fixing plate 2-1, and the elastic body fixing plate 2-1 is parallel to the sealing body push plate 4; a plurality of elastic body fixing shafts 2-2 are provided on one side of the elastic body fixing plate 2-1, and each elastic body 3 is sequentially sleeved on each elastic body fixing shaft 2-2, and the free length of the elastic body 3 is greater than the length of the elastic body fixing shaft 2-2;

[0038] Its function is as follows: the elastomer fixing plate 2-1 is used to carry the entire elastomer fixing component 2, and the radial limiting sleeve of the elastomer 3 is arranged on each elastomer fixing shaft 2-2. The free length of the elastomer 3 is greater than the length of the elastomer fixing shaft 2-2, so that when the elastomer fixing plate 2-1 is pressed to shorten the distance between it and the sealing body push plate 4, each elastomer 3 can be in a compressed state, and each elastomer 3 gives the sealing body push plate 4 a reverse thrust to achieve the sealing function.

[0039] Among them, in this embodiment, the elastic body fixing shafts 2-2 are preferably evenly arranged on one side of the elastic body fixing plate 2-1, that is, the elastic bodies 3 are evenly arranged, so that the reverse thrust given to the sealing body push plate 4 by each elastic body 3 in a compressed state is more uniform and stable, and the sealing effect of the clamping unit to compress the sealing body 0 is better.

[0040] Among them, the preferred elastomer fixing component 2 and the sealing body push plate 4 of this embodiment are connected by a pressure plate 1, and the pressure plate 1 is fixed above the elastomer fixing plate 2-1 and the sealing body push plate 4, and the position between the elastomer fixing plate 2-1 and the sealing body push plate 4 is fixed along the axial limit of the elastomer fixing axis 2-2.

[0041] The elastic body fixing plate 2-1 disclosed in this embodiment is relatively fixed to the pressure plate 1, the sealing body push plate 4 can slide along the elastic body fixing shaft 2-2 in an axial limited manner, and the sealing body push plate 4 is always in contact with the free ends of each elastic body 3;

[0042] Its function is: the elastic body fixing plate 2-1 is fixed relative to the pressure plate 1, and by pressing the elastic body fixing plate 2-1, it has reached the sealing body push plate 4 and moved axially along the elastic body fixing axis 2-2 toward the elastic body fixing plate 2-1, and has reached the compression of the elastic body 3 and given the sealing body push plate 4 a reverse thrust, so that the elastic body 3 presses the sealing body 0 to achieve a sealing effect.

[0043] Specifically, the contact surface between the sealing body push plate 4 and the elastic body 3 is provided with at least two push plate fixing protrusions 4-1, and the push plate fixing protrusions 4-1 are provided with third through holes 4-10; the pressure plate 1 is provided with a plurality of limit strip holes 1-2 corresponding to each third through hole 4-10, and the length direction of the limit strip holes 1-2 is consistent with the length direction of the elastic body fixed shaft 2-2, and a fixed shaft is passed through each group of third through holes 4-10 and the limit strip holes 1-2;

[0044] Its function is: the fixed shaft passes through the limit bar hole 1-2 and the third through hole 4-10 in sequence to connect the pressure plate 1 and the sealing body push plate 4. When the elastic body fixed plate 2-1 is pressed, the fixed shaft drives the sealing body push plate 4 to slide along the limit bar hole 1-2 on the axial limit of the elastic body fixed shaft 2-2.

[0045] Among them, the push plate fixing protrusions 4 - 1 disclosed in this embodiment are evenly arranged on the sealing body push plate 4 , so that the connection and sliding relationship between the sealing body push plate 4 and the pressure plate 1 is more stable.

[0046] Specifically, the elastic body fixing plate 2-1 is provided with at least two second through holes 2-10, the pressing plate 1 is provided with a plurality of first through holes 1-1 corresponding to the second through holes 2-10, and a fixing shaft is passed through each group of the first through holes 1-1 and the second through holes 2-10;

[0047] Its function is to connect and fix the pressing plate 1 and the elastic body fixing plate 2-1 by passing the fixing shaft through the first through hole 1-1 and the second through hole 2-10 in sequence.

[0048] Among them, the second through holes 2 - 10 disclosed in this embodiment are evenly arranged on the elastic body fixing plate 2 - 1, so that the connection relationship between the pressing plate 1 and the elastic body fixing plate 2 - 1 is more stable.

[0049] Among them, the fixed shaft disclosed in this embodiment can be selected as a screw.

[0050] Example 2

[0051] like Figure 1 and Figure 2 As shown, this embodiment discloses a sealing device of a printer, including a pressing unit, which is the pressing unit of the printer disclosed in Embodiment 1, and also includes a sealing body 0 abutting against the fixing mechanism;

[0052] Its function is as follows: the fixing mechanism is used to carry the entire compression unit, limit multiple elastic bodies 3 therein and realize the compression and sealing of the sealing body. The overall one-piece molding has an easy-to-implement structure, which changes the original installation method. It is assembled externally and then directly used for the compression and sealing of the sealing body, realizing modular splicing. The installation process is simple and efficient.

[0053] Specifically, the sealing body 0 is arranged on the other side of the sealing body push plate 4, and the sealing body 0 matches the other side of the sealing body push plate 4 in structure;

[0054] Its function is: to compress the elastic body fixing component 2 so that the distance between the elastic body fixing component 2 and the sealing body push plate 4 is shortened. At this time, each elastic body 3 is in a compressed state, and the elastic body 3 gives a reverse thrust to the sealing body push plate 4, so that the elastic body 3 compresses the sealing body 0 to achieve a sealing effect; the overall structure is easy to implement, and the original installation method is changed. It adopts external centralized assembly and then directly used to compress the sealing body 0 for sealing, realizing modular splicing, and the installation process is simple and efficient.

[0055] The sealing body 0 may be felt, packing, or a sealing strip. The sealing body 0 disclosed in this embodiment is preferably felt.

[0056] Example 3

[0057] like Figure 3 As shown, this embodiment discloses a printer, including a molding cylinder C, and also includes four sealing devices A, the sealing devices A are the sealing devices of the printer disclosed in Example 2, the sealing body 0 of each sealing device A is attached to the side of the molding cylinder C, and each sealing device A is equal in length to the side of the molding cylinder C; an angular extrusion sealing component B is connected between the ends of two adjacent sealing devices A, each angular extrusion sealing component B matches the four corner structures of the molding cylinder C, and the elastic body 3 of each sealing device A is in a compressed state;

[0058] Its function is: first put a circle of sealing bodies around the forming cylinder C, and connect each pressing unit through the corner extrusion sealing component B. At this time, the distance between the elastic body fixing component 2 and the sealing body push plate 4 is shortened, and each elastic body 3 is in a compressed state. The elastic body 3 gives a reverse thrust to the sealing body push plate 4, so that the elastic body 3 presses the sealing body 0 to achieve a sealing effect; the overall structure is easy to implement, and the original installation method is changed. It adopts external centralized assembly and then directly used to compress the sealing body 0 for sealing, realizing modular splicing, and the installation process is simple and efficient.

[0059] Specifically, the corner extrusion sealing component B includes a rounded corner extrusion plate and a corner sealing body. The corner sealing body is attached to the four corners of the forming cylinder C and matches the four corner structure of the forming cylinder C. An extrusion elastomer is provided between the rounded corner extrusion plate and the corner sealing body, which makes the sealing effect at the four corners of the forming cylinder C better as a whole.

[0060] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0061] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0062] In addition, the various different implementation modes disclosed in this solution may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the content invented by the present disclosure.

Claims

1. A sealing body pressing unit of a printer, characterized in that: It comprises a fixing mechanism and a plurality of elastic bodies (3), wherein the plurality of elastic bodies (3) are embedded in the fixing mechanism, and the fixing mechanism abuts against the sealing body (0); The elastic body (3) is a spring, a U-shaped or a V-shaped elastic body; The fixing mechanism comprises an elastic body fixing component (2) and a sealing body push plate (4), each elastic body (3) is located between the elastic body fixing component (2) and the sealing body push plate (4), and the sealing body push plate (4) and the elastic body fixing component (2) are limitatively movably connected along the compression / extension direction of the elastic body (3).

2. The sealing body pressing unit of the printer according to claim 1, characterized in that: The compression / stretching directions of the elastic bodies (3) are parallel, and the elastic bodies (3) are limited on the elastic body fixing component (2). One side of the sealing body push plate (4) contacts the free end of each elastic body (3), and the other side of the sealing body push plate (4) is the pressing surface of the sealing body (0).

3. The sealing body pressing unit of the printer according to claim 2, characterized in that: The elastic body fixing component comprises an elastic body fixing plate (2-1), and the elastic body fixing plate (2-1) is parallel to the sealing body pushing plate (4); A plurality of elastic body fixing shafts (2-2) are provided on one side of the elastic body fixing plate (2-1), and each elastic body (3) is sleeved on each elastic body fixing shaft (2-2) in sequence, and the free length of the elastic body (3) is greater than the length of the elastic body fixing shaft (2-2).

4. The sealing body pressing unit of the printer according to claim 3, characterized in that: The elastic body fixing component (2) and the sealing body push plate (4) are connected via a pressure plate (1), and the pressure plate (1) is fixed above the elastic body fixing plate (2-1) and the sealing body push plate (4), and the position between the elastic body fixing plate (2-1) and the sealing body push plate (4) is axially limited and fixed along the elastic body fixing axis (2-2).

5. The sealing body pressing unit of the printer according to claim 4, characterized in that: The elastic body fixing plate (2-1) and the pressure plate (1) are relatively fixed, the sealing body push plate (4) can slide axially along the elastic body fixing shaft (2-2), and the sealing body push plate (4) is always in contact with the free end of each elastic body (3).

6. The sealing body pressing unit of the printer according to claim 5, characterized in that: The contact surface between the sealing body push plate (4) and the elastic body (3) is provided with at least two push plate fixing protrusions (4-1), and the push plate fixing protrusions (4-1) are provided with third through holes (4-10); the pressing plate (1) is provided with a plurality of limit strip holes (1-2) corresponding to the third through holes (4-10), the length direction of the limit strip holes (1-2) is consistent with the length direction of the elastic body fixed axis (2-2), and a fixed axis is passed through each group of third through holes (4-10) and the limit strip holes (1-2); The elastic body fixing plate (2-1) is provided with at least two second through holes (2-10), the pressing plate (1) is provided with a plurality of first through holes (1-1) corresponding to the second through holes (2-10), and a fixing shaft is provided between each group of first through holes (1-1) and the second through holes (2-10).

7. A sealing device for a printer, characterized in that: It comprises a pressing unit, which is a sealing body pressing unit of a printer as claimed in any one of claims 1 to 6, and also comprises a sealing body (0) abutting against the fixing mechanism.

8. A printer, comprising a forming cylinder (C), characterized in that: It also includes four sealing devices (A), wherein the sealing device (A) is the sealing device of the printer according to claim 7, the sealing body (0) of each sealing device (A) is attached to the side of the forming cylinder (C), and each sealing device (A) is equal in length to the side of the forming cylinder (C); An angular extrusion sealing component (B) is connected between the ends of two adjacent sealing devices (A), each angular extrusion sealing component (B) matches the four-corner structure of the forming cylinder (C), and the elastic body (3) of each sealing device (A) is in a compressed state.

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