Printing equipment

Abstract

The utility model discloses printing equipment which comprises a component platform, a printing piece, a first air suction groove and a first air suction piece. The component platform is suitable for bearing printing powder so as to support a 3D printing product. The printing piece is suitable for moving between the working area and the non-working area in the first direction relative to the component platform, and in the working area, the printing piece is located above the component platform and suitable for moving relative to the component platform so as to selectively solidify the printing powder, and printing is achieved. The first air suction groove is located between a working area and a non-working area of a printed piece. The first air suction part communicates with the first air suction groove and is suitable for forming negative pressure so that the first air suction groove can suck printing powder raised due to movement of the printing part, and therefore the raised printing powder is prevented from being deposited in other places, the work and service life of the printing equipment are prevented from being affected, and the maintenance time and cost needed for cleaning raised dust are prevented.

Description

Technical Field

[0001] The utility model relates to the field of printing products, and particularly to a printing device. Background Art

[0002] In the existing printing devices, there are a component platform and a printing member. The component platform is adapted to carry printing powder, and the printing member is adapted to move above the component platform to cure the printing powder for printing. However, during the movement of the printing member, light and small printing powder will be lifted. When the lifted printing powder deposits elsewhere, it will affect the working and service life of the printing device, as well as the maintenance time and cost required for cleaning the dust. Summary of the Utility Model

[0003] The purpose of the utility model is to overcome the above-mentioned defects or problems in the background art and provide a printing device.

[0004] To achieve the above purpose, the utility model and its preferred embodiments adopt the following technical solutions, but the embodiments are not limited to the following solutions:

[0005] Solution 1: A printing device, comprising

[0006] A component platform, which is adapted to carry printing powder thereon;

[0007] A printing member, which is adapted to move relative to the component platform along a first direction between a working area and a non-working area. In the working area, it is located above the component platform and is adapted to move relative to the component platform to selectively cure the printing powder;

[0008] A first air suction groove, which is located between the working area and the non-working area of the printing member;

[0009] A first air suction member, which is communicated with the first air suction groove and is adapted to form a negative pressure to enable the first air suction groove to suck the printing powder lifted due to the movement of the printing member.

[0010] Solution 2: Based on Solution 1, the printing member includes a nozzle, and the nozzle is used to selectively spray a reagent into the printing powder. When the printing member is in the non-working area, the nozzle is cleaned and moisturized.

[0011] Solution 3: Based on Solution 1, it further includes a stirring member and a spreading roller. The number of the stirring members is two, and the two stirring members are respectively located on both sides of the component platform along a second direction, wherein the second direction is perpendicular to the first direction and the up-down direction; the stirring member is adapted to stir the printing powder;

[0012] The spreading roller is suitable for moving along the second direction and rotating around an axis parallel to the first direction to spread the printing powder on the stirring member onto the component platform. The first suction groove extends along the second direction and at least extends to the stirring member. The first suction groove is also suitable for sucking in the printing powder raised by the movement of the stirring member and the spreading roller.

[0013] Option 4, based on Options 1 to 3, also includes a second air suction groove and a second air suction member, the second air suction groove is located on the side of the component platform away from the first air suction groove and is symmetrically arranged with the first air suction groove, and the second air suction member is connected to the second air suction groove.

[0014] Solution five, based on solution four, also includes a control component, which is electrically connected to the first suction component and the second suction component, and the control component is suitable for selectively controlling the negative pressure of the first suction component and the second suction component according to the movement and / or position of the printed part.

[0015] Option six, based on Option four, also includes a third air suction groove, a fourth air suction groove, a third air suction piece and a fourth air suction piece, wherein the third air suction groove and the fourth air suction groove are respectively located at the two ends of the component platform along the second direction, wherein the second direction is perpendicular to the first direction and the up and down directions; the third air suction groove and the fourth air suction groove both extend along the first direction; the third air suction piece and the fourth air suction piece are respectively connected to the third air suction groove and the fourth air suction groove.

[0016] Option seven, based on Option six, also includes a control member, which is electrically connected to the first suction member, the second suction member, the third suction member, and the fourth suction member, and the control member is suitable for selectively controlling the negative pressure of the first suction member, the second suction member, the third suction member, and the fourth suction member according to the movement and / or position of the printed part.

[0017] Scheme 8, based on Scheme 1, also includes a third suction groove, a fourth suction groove, a third suction piece, a fourth suction piece and a control piece, wherein the third suction groove and the fourth suction groove are respectively located at the two ends of the component platform along the second direction, and the third suction groove and the fourth suction groove both extend along the first direction; the third suction piece and the fourth suction piece are respectively connected to the third suction groove and the fourth suction groove; the control piece is electrically connected to the first suction piece, the third suction piece and the fourth suction piece, and the control piece is suitable for selectively controlling the negative pressure of the first suction piece, the third suction piece and the fourth suction piece according to the movement and / or position of the printed piece.

[0018] Solution nine, based on Solution one, further includes a collecting piece, wherein the collecting piece is suitable for collecting the printing powder sucked in by the first suction groove.

[0019] As can be seen from the above description of the present utility model and its preferred embodiments, compared with the prior art, the technical solutions of the present utility model and its preferred embodiments have the following beneficial effects due to the following technical means:

[0020] 1. In Solution 1 and its preferred embodiment, a printing device includes a component platform, a printing part, a first air suction groove, and a first air suction member.

[0021] The component platform is suitable for carrying printing powder to support 3D printing products. The printing part is suitable for moving relative to the component platform in a first direction between a working area and a non-working area. In the working area, it is located above the component platform and is suitable for moving relative to the component platform to selectively cure the printing powder to achieve printing.

[0022] The first air suction groove is located between the working area and the non-working area of the printing part; the first air suction member is communicated with the first air suction groove, and it is suitable for forming a negative pressure to enable the first air suction groove to suck the printing powder lifted due to the movement of the printing part, thereby preventing the lifted printing powder from depositing elsewhere, affecting the operation and service life of the printing device, as well as the maintenance time and cost required for cleaning the dust.

[0023] 2. In Solution 2 and its preferred embodiment, the printing part includes a nozzle, and the nozzle is used to selectively eject a reagent into the printing powder. When the printing part is in the non-working area, the nozzle is cleaned and moisturized, thereby preventing ink blockage and affecting subsequent printing. And the first air suction groove is located between the working area and the non-working area of the printing part, which can prevent dust from depositing at the cleaning and moisturizing positions and affecting the service life of the nozzle.

[0024] 3. In Solution 3 and its preferred embodiment, the number of stirring members is two, and the two stirring members are respectively located on both sides of the component platform along a second direction, where the second direction is perpendicular to the first direction and the up-down direction; the stirring members are suitable for stirring the printing powder to make the printing powder uniform, which is beneficial for subsequent printing.

[0025] The powder spreading roller is suitable for moving along the second direction and rotating around an axis parallel to the first direction to spread the printing powder on the stirring member onto the component platform. By spreading the powder in this way, the compactness, uniformity, and flatness of the printing powder on the component platform are improved.

[0026] The first air suction groove extends along the second direction and at least extends to the stirring member, so that the first air suction groove is also suitable for sucking the printing powder lifted due to the movement of the stirring member and the powder spreading roller, ensuring the cleanliness of the printing device and reducing the maintenance time and cost required for cleaning the dust.

[0027] 4. Scheme 4 and its preferred embodiments further include a second suction groove and a second suction member. The second suction groove is located on the side of the component platform away from the first suction groove. The second suction member is connected to the second suction groove, thereby increasing the area for sucking in dust and making the printing equipment cleaner. The second suction groove is symmetrically arranged with the first suction groove, and the second suction groove extends along the second direction. Based on scheme 3, the second suction groove can also suck in printing powder raised by the movement of the stirring member and the spreading roller.

[0028] 5. In the fifth scheme and its preferred embodiment, the control member is electrically connected to the first suction member and the second suction member, and the control member is suitable for selectively controlling the negative pressure of the first suction member and the second suction member according to the movement and / or position of the printed workpiece. The first suction slot and the second suction slot are independent of each other. When the printed workpiece moves, the suction force of the suction slot in the corresponding direction of movement can be increased, which can effectively prevent the airflow generated by the moving parts from affecting the printed powder. When this scheme is based on the third scheme, the control member is suitable for selectively controlling the negative pressure of the first suction member and the second suction member according to the movement and / or position of the spreading roller, thereby achieving the corresponding effect.

[0029] 6. Scheme 6 and its preferred embodiments further include a third air suction groove, a fourth air suction groove, a third air suction member and a fourth air suction member. The third air suction groove and the fourth air suction groove are respectively located at the two ends of the component platform along the second direction, and the third air suction groove and the fourth air suction groove both extend along the first direction; the third air suction member and the fourth air suction member are respectively connected to the third air suction groove and the fourth air suction groove, thereby increasing the area for sucking in dust and making the printing equipment cleaner.

[0030] 7. In scheme seven and its preferred embodiments, the control member is electrically connected to the first suction member, the second suction member, the third suction member, and the fourth suction member. The control member is suitable for selectively controlling the negative pressure of the first suction member, the second suction member, the third suction member, and the fourth suction member according to the movement and / or position of the printed part, which can effectively prevent the airflow generated by the moving parts from affecting the printing powder.

[0031] 8. Scheme 8 and its preferred embodiments further include a third air suction slot, a fourth air suction slot, a third air suction member, a fourth air suction member and a control member, wherein the third air suction slot and the fourth air suction slot are respectively located at two ends of the component platform along the second direction, and the third air suction slot and the fourth air suction slot both extend along the first direction; the third air suction member and the fourth air suction member are respectively connected to the third air suction slot and the fourth air suction slot, thereby increasing the area for sucking dust and making the printing device cleaner;

[0032] The control component is electrically connected to the first suction component, the third suction component, and the fourth suction component. The control component is suitable for selectively controlling the negative pressure of the first suction component, the third suction component, and the fourth suction component according to the movement and / or position of the printed part, and can effectively prevent the airflow generated by the moving parts from affecting the printing powder.

[0033] In Solution Nine and its preferred embodiments, the collecting member is adapted to collect the printing powder inhaled by the first air suction groove, so as to achieve recycling and reuse, saving costs. Description of the Drawings

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0035] Figure 1 It is a schematic diagram of the printing device in Embodiment 1;

[0036] Figure 2 It is a schematic diagram at the recycling member in Embodiment 1.

[0037] Main reference numerals description:

[0038] Component platform 1; Printed part 2; First air suction groove 3; First air suction member 4; Stirring member 5; Spreading roller 6; Second air suction groove 7; Third air suction groove 8; Fourth air suction groove 9; Collecting member 10; Powder recovery port 101; First direction 20; Second direction 30; Detailed Embodiments

[0039] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are the preferred embodiments of the present invention and should not be regarded as excluding other embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0040] In the claims, the description and the above drawings of the present invention, unless otherwise clearly defined, when using terms such as "first", "second" or "third", etc., are used to distinguish different objects rather than to describe a specific order.

[0041] In the claims, description and the above-mentioned drawings of the present utility model, unless otherwise clearly defined, for orientation terms, such as the use of terms "center", "horizontal", "longitudinal", "level", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "rear", "left", "right", "clockwise", "counterclockwise", etc. to indicate the orientation or position relationship are based on the orientation and position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, so it should not be construed as limiting the specific protection scope of the present invention.

[0042] In the claims, description and the above-mentioned drawings of the present utility model, unless otherwise clearly defined, if the terms "fixed connection" or "fixedly connected" are used, they should be understood in a broad sense, that is, any connection method without displacement relationship and relative rotation relationship between the two, that is, including non-detachable fixed connection, detachable fixed connection, being integrated as a whole, and being fixed through other devices or elements.

[0043] In the claims, description and the above-mentioned drawings of the present utility model, if the terms "comprising", "having" and their variants are used, they are intended to mean "including but not limited to".

[0044] Reference Figure 1 、 Figure 2 , a printing device, comprising a component platform 1, a printing part 2, a first air suction groove 3, a first air suction part 4, a stirring part 5, a powder spreading roller 6, a second air suction groove 7, a second air suction part, a third air suction groove 8, a third air suction part, a fourth air suction groove 9, a fourth air suction part, a control part and a collection part 10.

[0045] Reference Figure 1 , the component platform 1 is adapted to carry printing powder, and is adapted to lift so as to facilitate the powder spreading roller 6 to spread powder layer by layer and the printing part 2 to print layer by layer. In the embodiments described herein, the printing powder may be granular materials such as plastics, semi-crystalline materials, metals or ceramics.

[0046] The print part 2 is suitable for moving in the working area and the non-working area along the first direction 20 relative to the component platform 1. In this embodiment, the first direction 20 is the left and right direction in the figure. The print part 2 includes a nozzle, which is used to selectively spray reagents in the printing powder. The reagents include one or more of wiring and fusing agents, adhesives, and colorants. When the print part 2 is in the working area, the print part 2 is located above the component platform 1 to make the nozzle work, and when the print part 2 is in the working area, the print part 2 is suitable for moving relative to the component platform 1 to selectively solidify the printing powder to achieve three-dimensional printing, wherein the movement mode of the print part 2 can be a straight line movement or an oblique line movement. When the print part 2 is in the non-working area, the print part 2 is away from the component platform 1. In this embodiment, when in the non-working area, the nozzle is cleaned and moisturized to achieve maintenance and prevent ink clogging, which affects the subsequent use of the print part 2.

[0047] There are two stirring members 5, which are respectively located on both sides of the component platform 1 along the second direction 30, wherein the second direction 30 is perpendicular to the first direction 20 and the up and down direction, and the second direction 30 is parallel to the horizontal direction; the stirring member 5 is suitable for stirring the printing powder to make the printing powder evenly distributed. In other embodiments, the stirring member 5 may also have a heating function to preheat the printing powder.

[0048] The spreading roller 6 is adapted to move along the second direction 30 and rotate around an axis parallel to the first direction 20 to spread the printing powder on the stirring member 5 onto the component platform 1 . If there is excess printing powder, the spreading roller 6 will also push the excess powder into another stirring member 5 .

[0049] The first suction groove 3 is located between the working area and the non-working area of the printing piece 2. The first suction groove 3 is suitable for sucking the printing powder raised by the movement of the printing piece 2, for example, sucking the printing powder raised when the printing piece 2 moves from the working area to the non-working area, or from the non-working area to the working area, or when the printing piece 2 moves in the working area. The first suction groove 3 extends along the second direction 30 and at least extends to the stirring member 5, so that the first suction groove 3 is also suitable for sucking the printing powder raised by the movement of the stirring member 5 and the spreading roller 6.

[0050] The first suction member 4 is in communication with the first suction slot 3 and is suitable for forming a negative pressure so that the first suction slot 3 can suck the raised printing powder.

[0051] The second suction groove 7 is located on the side of the component platform 1 away from the first suction groove 3 and is symmetrically arranged with the first suction groove 3. The second suction groove 7 extends along the second direction 30 and also extends at least to the stirring member 5. The second suction groove 7 is mainly suitable for sucking printing powder raised when the printing member 2 moves in the working area and the stirring member 5 and the spreading roller 6 move.

[0052] The second air suction member communicates with the second air suction groove 7, and the second air suction member is adapted to form a negative pressure so that the second air suction groove 7 sucks in the lifted printing powder.

[0053] The third air suction groove 8 and the fourth air suction groove 9 are respectively located at both ends of the member platform 1 along the second direction 30. In this embodiment, both the third air suction groove 8 and the fourth air suction groove 9 extend along the first direction 20, and the third air suction groove 8 and the fourth air suction groove 9 are farther away from the member platform 1 relative to the stirring member 5. Thus, in cooperation with the first air suction groove 3 and the second air suction groove 7, the stirring member 5, the building platform, and the spreading roller 6 are surrounded to achieve all-round adsorption of dust. The third air suction groove 8 and the fourth air suction groove 9 are mainly adapted to suck in the printing powder lifted when the printed part 2 moves in the working area and when the stirring member 5 and the spreading roller 6 move.

[0054] The third air suction member and the fourth air suction member communicate with the third air suction groove 8 and the fourth air suction groove 9 respectively, and form a negative pressure so that the third air suction groove 8 and the fourth air suction groove 9 suck in the lifted printing powder.

[0055] In other embodiments, only the first air suction groove 3 and the second air suction groove 7, or the first air suction groove 3, the third air suction groove 8 and the fourth air suction groove 9 may be provided to meet the influence of dust on the printing effect and the lifespan of the printed part 2. And the first air suction groove 3 is necessary because the first air suction groove 3 is close to the cleaning and moisturizing area of the nozzle. The dust deposition at the cleaning and moisturizing positions will affect the lifespan of the nozzle.

[0056] The control member is electrically connected to the first air suction member 4, the second air suction member, the third air suction member, and the fourth air suction member. The control member is adapted to selectively control the magnitude of the negative pressure of the first air suction member 4, the second air suction member, the third air suction member, and the fourth air suction member according to the movement and / or position of the printed part 2 and the spreading roller 6. For example, according to the position of the printed part 2, when the printed part 2 moves to the right direction at this time, the dust at the first air suction groove 3 is larger, then increase the suction of the first air suction groove 3. And if the printed part 2 is close to the position of the second air suction groove 7, when the printed part 2 moves a small distance to the right at this time, the possibility of larger dust at the second air suction groove 7 is greater, then increase the suction of the second air suction groove 7. Of course, it is also possible to directly increase the suction of the corresponding air suction groove in the corresponding movement direction through the movement direction of the printed part 2, which is simpler. Similarly, when the spreading roller 6 moves, the suction of the corresponding air suction groove can also be increased, so as to effectively prevent the influence of the airflow generated by the moving parts on the printing powder.

[0057] Reference Figure 2, the collecting member 10 is in communication with the first air suction groove 3, the second air suction groove 7, the third air suction groove 8 and the fourth air suction groove 9, and is adapted to collect the printing powder inhaled by the first air suction groove 3, the second air suction groove 7, the third air suction groove 8 and the fourth air suction groove 9. Preferably, the collecting member 10 is adapted to separate air from the printing powder and is provided with a powder recovery port 101 for recovery. In other embodiments, four collecting members 10 may be provided, and the four collecting members 10 are respectively in communication with the first air suction groove 3, the second air suction groove 7, the third air suction groove 8 and the fourth air suction groove 9.

[0058] During use, for the dust generated during the movement of the printing member 2, the stirring member 5 and the spreading roller 6, by selectively controlling the negative pressure magnitudes of the first air suction member 4, the second air suction member, the third air suction member and the fourth air suction member, the first air suction groove 3, the second air suction groove 7, the third air suction groove 8 and the fourth air suction groove 9 are correspondingly controlled to inhale the dust, so as to reduce the adverse consequences caused by the dust. The inhaled dust is collected by the collecting member 10 for convenient recycling.

[0059] Compared with the prior art, the present embodiment has the following beneficial effects:

[0060] In an exemplary embodiment, a printing device includes a component platform 1, a printing member 2, a first air suction groove 3 and a first air suction member 4.

[0061] The component platform 1 is adapted to carry printing powder to support a 3D printing product. The printing member 2 is adapted to move relative to the component platform 1 in a first direction 20 between a working area and a non-working area. In the working area, it is located above the component platform 1 and is adapted to move relative to the component platform 1 to selectively cure the printing powder to achieve printing.

[0062] The first air suction groove 3 is located between the working area and the non-working area of the printing member 2; the first air suction member 4 is in communication with the first air suction groove 3, and is adapted to form a negative pressure to cause the first air suction groove 3 to inhale the printing powder lifted due to the movement of the printing member 2, thereby preventing the lifted printing powder from depositing elsewhere, affecting the operation and service life of the printing device, as well as the maintenance time and cost required for cleaning the dust.

[0063] In an exemplary embodiment, the printing member 2 includes a nozzle, and the nozzle is used to selectively eject a reagent into the printing powder. When the printing member 2 is in the non-working area, the nozzle is cleaned and moisturized to prevent ink blockage and affect subsequent printing. And the first air suction groove 3 is located between the working area and the non-working area of the printing member 2, which can prevent the dust from depositing at the cleaning and moisturizing positions and affecting the service life of the nozzle.

[0064] In an exemplary embodiment, there are two stirring members 5, which are respectively located on both sides of the component platform 1 along the second direction 30, wherein the second direction 30 is perpendicular to the first direction 20 and the up and down direction; the stirring member 5 is suitable for stirring the printing powder to make the printing powder uniform, which is conducive to subsequent printing.

[0065] The spreading roller 6 is adapted to move along the second direction 30 and rotate around an axis parallel to the first direction 20 to spread the printing powder on the stirring member 5 onto the component platform 1. By spreading the powder in this manner, the density, uniformity and flatness of the printing powder on the component platform 1 are improved.

[0066] The first suction groove 3 extends along the second direction 30 and at least extends to the stirring member 5, so that the first suction groove 3 is also suitable for sucking printing powder raised by the movement of the stirring member 5 and the spreading roller 6, ensuring the cleanliness of the printing equipment and reducing the maintenance time and cost required for cleaning dust.

[0067] In an exemplary embodiment, it also includes a second suction groove 7 and a second suction member. The second suction groove 7 is located on the side of the component platform 1 away from the first suction groove 3. The second suction member is connected to the second suction groove 7, thereby increasing the area for sucking in dust and making the printing equipment cleaner. The second suction groove 7 is symmetrically arranged with the first suction groove 3. The second suction groove 7 extends along the second direction 30. Based on scheme three, the second suction groove 7 can also suck in printing powder raised by the movement of the stirring member 5 and the spreading roller 6.

[0068] In an exemplary embodiment, the control component is electrically connected to the first suction component 4 and the second suction component. The control component is suitable for selectively controlling the negative pressure of the first suction component 4 and the second suction component according to the movement and / or position of the printed part 2. The first suction slot 3 and the second suction slot 7 are independent of each other. When the printed part 2 moves, the suction force of the suction slot in the corresponding direction of movement can be increased, which can effectively prevent the airflow generated by the moving parts from affecting the printing powder. When this scheme is based on scheme three, the control component is suitable for selectively controlling the negative pressure of the first suction component 4 and the second suction component according to the movement and / or position of the spreading roller 6, thereby achieving the corresponding effect.

[0069] In an exemplary embodiment, it also includes a third suction groove 8, a fourth suction groove 9, a third suction piece and a fourth suction piece. The third suction groove 8 and the fourth suction groove 9 are respectively located at both ends of the component platform 1 along the second direction 30, and the third suction groove 8 and the fourth suction groove 9 both extend along the first direction 20; the third suction piece and the fourth suction piece are respectively connected to the third suction groove 8 and the fourth suction groove 9, thereby increasing the area for sucking in dust and making the printing equipment cleaner.

[0070] In an exemplary embodiment, the control member is electrically connected to the first air suction member 4, the second air suction member, the third air suction member, and the fourth air suction member. The control member is adapted to selectively control the negative pressure magnitudes of the first air suction member 4, the second air suction member, the third air suction member, and the fourth air suction member according to the movement and / or position of the printed part 2, which can effectively prevent the influence of the airflow generated by the moving parts on the printing powder.

[0071] In an exemplary embodiment, the collecting member 10 is adapted to collect the printing powder sucked into the first air suction groove 3, so as to realize recycling and save costs.

[0072] The above description of the specification and embodiments is used to explain the protection scope of the present invention, but does not constitute a limitation on the protection scope of the present invention. Through the inspiration of the present invention or the above embodiments, those of ordinary skill in the art, combined with common general knowledge, ordinary technical knowledge in the art, and / or existing technologies, can make modifications, equivalent replacements, or other improvements to the embodiments of the present invention or some of its technical features through logical analysis, reasoning, or limited experiments, and all of them should be included in the protection scope of the present invention.

Claims

1. A printing device, characterized in that: include A component platform (1) suitable for carrying printing powder; A printing member (2) adapted to move relative to the component platform (1) along a first direction (20) between a working area and a non-working area. In the working area, the printing member is located above the component platform (1) and adapted to move relative to the component platform (1) to selectively solidify printing powder; A first air suction slot (3), which is located between a working area and a non-working area of the printed piece (2); A first suction member (4) is connected to the first suction groove (3) and is suitable for forming a negative pressure so that the first suction groove (3) can suck the printing powder raised by the movement of the printing piece (2).

2. A printing device according to claim 1, characterized in that: The printing piece (2) comprises a nozzle, which is used to selectively spray a reagent in the printing powder. When the printing piece (2) is located in a non-working area, the nozzle is cleaned and moisturized.

3. A printing device according to claim 1, characterized in that: It also comprises a stirring member (5) and a spreading roller (6), wherein the stirring members (5) are two in number and are respectively located on both sides of the component platform (1) along the second direction (30), wherein the second direction (30) is perpendicular to the first direction (20) and the up-down direction; the stirring member (5) is suitable for stirring printing powder; The spreading roller (6) is suitable for moving along the second direction (30) and rotating around an axis parallel to the first direction (20) to spread the printing powder on the stirring member (5) onto the component platform (1), and the first suction groove (3) extends along the second direction (30) and at least extends to the stirring member (5), and the first suction groove (3) is also suitable for sucking the printing powder raised by the movement of the stirring member (5) and the spreading roller (6).

4. A printing device according to any one of claims 1 to 3, characterized in that: It also comprises a second air suction groove (7) and a second air suction member, wherein the second air suction groove (7) is located on a side of the component platform (1) away from the first air suction groove (3) and is symmetrically arranged with the first air suction groove (3), and the second air suction member is in communication with the second air suction groove (7).

5. A printing device according to claim 4, characterized in that: It also includes a control component, which is electrically connected to the first suction component (4) and the second suction component, and is suitable for selectively controlling the negative pressure of the first suction component (4) and the second suction component according to the movement and / or position of the printed part (2).

6. A printing device according to claim 4, characterized in that: The component platform (1) further comprises a third air suction groove (8), a fourth air suction groove (9), a third air suction member and a fourth air suction member, wherein the third air suction groove (8) and the fourth air suction groove (9) are respectively located at two ends of the component platform (1) along the second direction (30), wherein the second direction (30) is perpendicular to the first direction (20) and the up-down direction; the third air suction groove (8) and the fourth air suction groove (9) both extend along the first direction (20); and the third air suction member and the fourth air suction member are respectively connected to the third air suction groove (8) and the fourth air suction groove (9).

7. A printing device according to claim 6, characterized in that: It further includes a control member, which is electrically connected to the first air suction member (4), the second air suction member, the third air suction member, and the fourth air suction member. The control member is adapted to selectively control the negative pressure magnitudes of the first air suction member (4), the second air suction member, the third air suction member, and the fourth air suction member according to the movement and / or position of the printed part (2).

8. A printing device according to claim 1, characterized in that: It further includes a third air suction groove (8), a fourth air suction groove (9), a third air suction member, a fourth air suction member, and a control member. The third air suction groove (8) and the fourth air suction groove (9) are respectively located at two ends of the member platform (1) along the second direction (30), and both the third air suction groove (8) and the fourth air suction groove (9) extend along the first direction (20); the third air suction member and the fourth air suction member are respectively communicated with the third air suction groove (8) and the fourth air suction groove (9); the control member is electrically connected to the first air suction member (4), the third air suction member, and the fourth air suction member, and the control member is adapted to selectively control the negative pressure magnitudes of the first air suction member (4), the third air suction member, and the fourth air suction member according to the movement and / or position of the printed part (2).

9. A printing device according to claim 1, characterized in that: It further includes a collecting member (10), and the collecting member (10) is adapted to collect the printing powder inhaled by the first air suction groove (3).

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