Inkjet jig and inkjet apparatus

Abstract

The present disclosure provides an inkjet jig and an inkjet device, and belongs to the technical field of jigs. The inkjet jig comprises an inner region and an outer region. A slot is formed between the inner region and the outer region, and the shape of the slot corresponds to the shape of the inkjet area of the device to be inked. The inner region and the outer region are used to cover the device to be inked to shield other areas of the device to be inked except the inkjet area. The side wall of the slot close to the inner region has a flow guide surface, the flow guide surface is arranged obliquely, the direction of the top of the flow guide surface points to the bottom, the flow guide surface gradually approaches the outer region, and the flow guide surface is used to guide the ink to the inkjet area. The flow guide surface can guide the ink, so that more ink can flow to the inkjet area, thereby shielding the metal of the inkjet area.

Description

Technical Field

[0001] This disclosure relates to the field of fixture technology, and in particular to an inkjet fixture and an inkjet device. Background Technology

[0002] After the mid-frame and back cover of an electronic device are assembled, a gap exists between the edge of the back cover and the inner wall of the mid-frame. The mid-frame has an internal metal structure; when light from outside the device passes through this gap, the metal components reflect the light, producing a metallic sheen that makes the gap more noticeable. To make the gap more concealed, inkjet printing equipment is typically used to spray ink onto the internal metal structure of the mid-frame. This inkjet equipment includes nozzles and an inkjet fixture. The inkjet fixture covers the mid-frame and has slots through which the nozzles can spray ink into the mid-frame. Utility Model Content

[0003] This disclosure provides an inkjet fixture and an inkjet device that can effectively shield the metal structure on the middle frame. The technical solutions of the inkjet fixture and the inkjet device are as follows.

[0004] In a first aspect, this disclosure provides an inkjet fixture, characterized in that the inkjet fixture includes an inner region and an outer region. A slot is formed between the inner region and the outer region, the slot corresponding to the shape of the inkjet-to-be-jet area of ​​a device to be inkjet-edged. The inner region and the outer region are used to cover the device to be inkjet-edged, thereby shielding other areas of the device except for the inkjet-to-be-jet area. The slot has a guide surface near the sidewall of the inner region, the guide surface is inclined, and along the direction from the top to the bottom of the guide surface, the guide surface gradually approaches the outer region. The guide surface is used to guide ink to the inkjet-to-be-jet area, thereby providing a shielding effect on the inkjet-to-be-jet area.

[0005] In one possible implementation, the sidewall of the slot near the inner region is located at a first distance from the end of the inkjet-electrode device, and the sidewall of the slot near the outer region is located at a second distance from the end of the inkjet-electrode device, where the first distance is less than the second distance. The height difference between the first and second distances, in conjunction with the guide surface, forms an inkjet channel, thereby enabling the inkjet fixture to direct ink to the inkjet-electrode area.

[0006] In one possible implementation, the outer region has a shielding portion that blocks the top of the sidewall of the groove in the area to be inkjet printed. This prevents ink from spraying onto the outer surface of the device, ensuring that the ink does not affect the aesthetics of the device.

[0007] In one possible implementation, let the height of the obstruction portion of the outer region protruding relative to the sidewall be D, then 0.4mm ≤ D ≤ 1mm. This ensures that the inkjet fixture can both prevent ink from being sprayed onto the outer surface of the device to be inkjetized and avoids being too heavy.

[0008] In one possible implementation, the outer region includes a first plate and a second plate arranged in a bent configuration. The first plate and the second plate are bent, with the first plate located between the inner region and the second plate. A slot is formed between the sidewall of the first plate facing away from the second plate and the inner region. One end of the first plate, away from the second plate, extends into the slot. The top of the first plate and the second plate constitute the shielding portion, with the second plate shielding the top of the sidewall. The second plate provides protection for the inkjet device, preventing the nozzle from colliding with the device and causing scratches.

[0009] In one possible implementation, a gap exists between the second plate and the top of the sidewall. If the nozzle collides with the second plate, the gap between the second plate and the inkjet device makes it less likely for the second plate to come into contact with the inkjet device, thus preventing the inkjet device from being scratched by the second plate.

[0010] In one possible implementation, a plurality of spaced-apart slots are formed between the inner region and the outer region. The slots are arranged sequentially along the circumference of the outer region, and each slot is positioned opposite a different ink-jet area of ​​the inkjet device. This allows ink to flow along the slots to each ink-jet area.

[0011] In one possible implementation, a connecting rib is provided between the inner region and the outer region. The two ends of the connecting rib are connected to the inner region and the outer region, respectively. The connecting rib corresponds to the non-inkjet area of ​​the inkjet device and serves to block the non-inkjet area. Thus, when the nozzle is spraying towards the groove, the connecting rib can prevent ink from being sprayed into the non-inkjet area, thereby reducing the amount of ink flowing into the non-inkjet area.

[0012] In one possible implementation, a plurality of connecting ribs are spaced apart between the inner region and the outer region, thereby enabling the masking of multiple non-inkjet areas.

[0013] In one possible implementation, the width of the connecting rib along the circumference of the outer region is greater than or equal to the width of the non-inkjet region along the circumference of the outer region. On a projection plane parallel to the bottom surface of the inner region, the two first sidewalls of the non-inkjet region are located between the two second sidewalls of the connecting rib, or the two first sidewalls of the non-inkjet region are opposite to the two second sidewalls of the connecting rib. Thus, when the nozzle is directed towards the grooved area for spraying, the connecting rib can prevent more ink from being sprayed into the non-inkjet region.

[0014] In one possible implementation, along the direction close to the external region, the guide surface includes a first inclined surface, a stepped structure, and a second inclined surface arranged in sequence, wherein the stepped structure is concave along the direction away from the external region. This reduces the processing difficulty of the guide surface.

[0015] In one possible implementation, let α be the angle between the guide surface and the bottom surface of the internal region, then 30°≤α≤60°.

[0016] In one possible implementation, the bottom surface of the inner region is designed to fit against the inkjet device. This allows the inner region 1 to act as a barrier against ink, preventing ink from easily flowing into the gap between the inner region and the bottom wall.

[0017] In one possible implementation, the sidewall of the slot near the inner region also has an ink-preventing surface. The ink-preventing surface is connected to the guide surface near the outer region, and its bottom end is used to abut the inkjet device. Let β be the angle between the ink-preventing surface and the bottom surface of the inner region, and α be the angle between the guide surface and the bottom surface of the inner region; then β > α. Thus, when ink flows through the guide surface, more ink flows along the inclined direction of the guide surface towards the junction of the bottom wall and the sidewall, while less ink flows towards the ink-preventing surface. This ensures that when the ink reaches the bottom wall, it is farther from the ink-preventing surface, making it less likely for ink to enter the gap between the inner region and the bottom wall.

[0018] In one possible implementation, β = 90°. This allows for a thicker bottom layer of the inner region, making it less prone to warping and thus preventing ink from easily entering the gap between the inner region and the bottom wall.

[0019] In a second aspect, this disclosure provides an inkjet apparatus, the inkjet apparatus including a nozzle and an inkjet fixture as described in any of the first aspects;

[0020] The ink jetting direction of the nozzle is along the top to the bottom of the guide surface, thereby making it less likely for ink to splash to other locations.

[0021] The technical solution provided in this disclosure includes at least the following beneficial effects:

[0022] This disclosure provides an inkjet fixture. When inkjet printing is required on a device, the fixture is first placed over the device, and then ink is sprayed onto the slot using a nozzle. Because the sidewall of the slot near the inner region has a sloping guide surface, this surface guides the ink flow, allowing more ink to flow towards the inkjet area, thus shielding the metal in that area. Furthermore, the sloping guide surface also allows for a larger opening at the top of the slot, facilitating the entry of more ink ejected from the nozzle into the slot.

[0023] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0024] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. In the drawings:

[0025] Figure 1 This is a schematic diagram of the structure of an inkjet fixture and an inkjet device to be inkjetized, as shown in an embodiment of this disclosure;

[0026] Figure 2 This is an exploded view of an inkjet fixture and an inkjet-electrode device shown in an embodiment of this disclosure;

[0027] Figure 3 This is a cross-sectional view of an inkjet fixture and an inkjet-electrocuting device shown in an embodiment of this disclosure;

[0028] Figure 4 This is a partial cross-sectional view of an inkjet fixture and an inkjet-electrode device shown in an embodiment of this disclosure;

[0029] Figure 5 This is a partial cross-sectional view of an inkjet fixture and an inkjet-electrode device shown in an embodiment of this disclosure;

[0030] Figure 6 This is a partial enlarged view of an inkjet fixture and an inkjet-electrode device shown in an embodiment of this disclosure;

[0031] Figure 7 This is a partial enlarged view of an inkjet fixture and an inkjet-electrode device shown in an embodiment of this disclosure;

[0032] Figure 8 This is a partial cross-sectional view of an inkjet fixture and an inkjet device to be inkjetized, as shown in an embodiment of this disclosure.

[0033] Legend:

[0034] 1. Internal area; 11. Guide surface; 111. First slope; 112. Step structure; 113. Second slope; 12. Anti-overflow ink surface;

[0035] 2. External area; 21. First plate; 22. Second plate;

[0036] 3. Connecting reinforcement, 3a. Second sidewall;

[0037] 100. Inkjet fixture;

[0038] 200, device to be inkjet printed; 200a, groove; 200b, bottom wall; 200c, side wall; 2001, antenna radiating stub; 2002, non-inkjet printed device; 2002a, first side wall.

[0039] The accompanying drawings have illustrated specific embodiments of this disclosure, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this disclosure to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be further described in detail below with reference to the accompanying drawings.

[0041] The terminology used in the embodiments of this disclosure is for illustrative purposes only and is not intended to limit the disclosure. Unless otherwise defined, the technical or scientific terms used herein should be understood in their ordinary sense by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” “third,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “a” or “one,” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “comprising,” “including,” and similar terms mean that the elements or objects preceding “comprising” or “including” encompass the elements or objects listed following “comprising” or “including” and their equivalents, and do not exclude other elements or objects. The terms “connected,” “linked,” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” “right,” etc., are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0042] This disclosure provides an inkjet fixture 100, such as... Figures 1-5As shown, the inkjet fixture 100 includes an inner region 1 and an outer region 2. A slot 100a is formed between the inner region 1 and the outer region 2, and the slot 100a corresponds to the shape of the ink-jetting area of ​​the inkjet device 200. The inner region 1 and the outer region 2 are used to cover the inkjet device 200 to block other areas of the inkjet device 200 except for the ink-jetting area. The slot 100a has a guide surface 11 near the side wall of the inner region 1. The guide surface 11 is arranged at an angle, pointing from the top to the bottom, and gradually approaches the outer region 2. The guide surface 11 is used to guide ink to the ink-jetting area.

[0043] The inkjet fixture 100 can be a one-piece structure, made by machining a groove 100a on a plate.

[0044] The inkjet device 200 can be a mid-frame, and the inkjet area has metal.

[0045] The technical solution provided in this disclosure involves first covering the inkjet jig 100 over the inkjet device 200 when inkjet printing is required on the device 200, and then using a nozzle to print ink onto the slot 100a. Since the sidewall of the slot 100a near the inner region 1 has a sloping guiding surface 11, the guiding surface 11 can guide the ink flow, allowing more ink to flow towards the inkjet area, thereby shielding the metal in the inkjet area.

[0046] In addition, setting the guide surface 11 as an inclined surface can make the opening at the top of the slot 100a larger, which is conducive to more ink ejected from the nozzle entering the slot 100a.

[0047] When the inkjet-electrode device 200 is a middle frame, the area to be inkjet-electrode is the connection point between the bottom wall 200b and the side wall 200c of the groove 200a in the middle frame. Therefore, the groove 100a needs to be opposite to the connection point between the bottom wall 200b and the side wall 200c. In some examples, such as Figure 4 and Figure 5 As shown, the sidewall of the groove 100a near the inner region 1 is close to one end of the inkjet device 200, and the distance between them is a first distance. The sidewall of the groove near the outer region 2 is close to one end of the inkjet device 200, and the distance between them is a second distance. The first distance is less than the second distance. The height difference between the first distance and the second distance, in conjunction with the guide surface 11, forms an inkjet channel. The inkjet channel can guide ink to the connection between the bottom wall 200b and the side wall 200c of the groove 200a.

[0048] In some examples, the outer region 2 has a shielding portion that shields the top of the sidewall 200c of the groove 200a, which is the area to be inkjet printed. This prevents ink from spraying onto the outer surface of the inkjet device 200, ensuring that the ink does not affect the aesthetics of the inkjet device 200.

[0049] In some examples, such as Figure 8 As shown, let D be the height of the outer region 2 protruding from the side wall 200c, then 0.4mm≤D≤1mm.

[0050] If D is too small, the outer area 2 will not be able to prevent ink from being sprayed onto the outer surface of the inkjet device 200, resulting in a lower aesthetic appeal of the inkjet device 200. If D is too large, although it can effectively block the ink, it will increase the weight and cost of the inkjet fixture.

[0051] In some examples, such as Figure 4 and Figure 5 As shown, the outer region 2 includes a first plate 21 and a second plate 22 arranged in a bent configuration. The first plate 21 and the second plate 22 are bent, with the first plate 21 located between the inner region 1 and the second plate 22. A groove 100a is formed between the sidewall of the first plate 21 facing away from the second plate 22 and the inner region 1. The end of the first plate 21 away from the second plate 22 is used to extend into the groove 200a. The top of the first plate 21 and the second plate 22 constitute a shielding portion, with the second plate 22 shielding the top of the sidewall 200c. The second plate 22 can protect the inkjet device 200, preventing the nozzle from colliding with the inkjet device 200 and causing scratches on the inkjet device 200.

[0052] In some examples, such as Figure 4 and Figure 5 As shown, there is a gap 10 between the second plate 22 and the top of the side wall 200c. If the nozzle collides with the second plate 22, the second plate 22 is unlikely to come into contact with the inkjet device 200 due to the gap between the second plate 22 and the inkjet device 200, thus making it less likely for the inkjet device 200 to be scratched by the second plate 22.

[0053] In some examples, multiple slots 100a are formed between the inner region 1 and the outer region 2. These slots 100a are arranged sequentially along the circumference of the outer region 2, and each slot 100a is positioned opposite a different inkjet printing area of ​​the inkjet printing device 200. This allows ink to flow along the different slots 100a to each inkjet printing area.

[0054] like Figure 6As shown, it should be noted that the inkjet-electrocutable device 200 also has a non-inkjet-electrocutable area 2002, therefore, the non-inkjet-electrocutable area 2002 needs to be shielded during inkjet printing. For example, when the inkjet-electrocutable device 200 is a mid-frame, the edge of the mid-frame has multiple antenna radiating branches 2001 arranged circumferentially. On the projection plane parallel to the bottom wall 200b, there is a plastic part (non-inkjet-electrocutable area 2002) between two adjacent antenna radiating branches 2001. Among them, the antenna radiating branches 2001 are made of metal. When light from outside the electronic device passes through the gap between the mid-frame and the back cover, the plastic part diffuses the light and does not produce a metallic luster, so the plastic part is not easily seen, and therefore the presence of the plastic part does not make the gap more obvious.

[0055] Furthermore, a tiny gap exists between the plastic part and the antenna radiating branch 2001, and the outer wall surface of the plastic part is flush with the outer wall surface of the antenna radiating branch 2001. That is, the tiny gap between the plastic part and the antenna radiating branch 2001 extends from the side wall 200c of the groove 200a to the outer wall surface of the mid-frame. Therefore, if a large amount of ink is sprayed onto the plastic part, the ink can easily seep through the tiny gap between the plastic part and the antenna radiating branch 2001 to the outer wall surface of the mid-frame, thus affecting the aesthetics of the mid-frame.

[0056] Therefore, such as Figure 6 As shown, a connecting rib 3 is provided between the inner region 1 and the outer region 2. The two ends of the connecting rib 3 are connected to the inner region 1 and the outer region 2, respectively. The connecting rib 3 corresponds to the non-inkjet region 2002 of the inkjet device 200 and is used to block the non-inkjet region 2002. Thus, when the nozzle sprays ink towards the slot 100a, the connecting rib 3 can prevent ink from being sprayed towards the non-inkjet region 2002, thereby reducing the amount of ink flowing towards the non-inkjet region 2002.

[0057] In some examples, multiple connecting ribs 3 are provided between the inner region 1 and the outer region 2, thereby enabling the masking of multiple non-inkjet regions 2002.

[0058] Furthermore, in some examples, such as Figure 6 and Figure 7 As shown, the width of the connecting rib 3 along the circumference of the outer region 2 is greater than or equal to the width of the non-inkjet region 2002 along the circumference of the outer region 2. On a projection plane parallel to the bottom surface of the inner region 1, the two first sidewalls 2002a of the non-inkjet region 2002 are located between the two second sidewalls 3a of the connecting rib 3, or the two first sidewalls 2002a of the non-inkjet region 2002 are opposite to the two second sidewalls 3a of the connecting rib 3. In this way, when the nozzle sprays towards the slot 100a, the connecting rib 3 can block more ink from being sprayed into the non-inkjet region 2002.

[0059] In some examples, such as Figure 4 and Figure 5 As shown, along the direction close to the bottom wall 200b, the guide surface 11 includes a first inclined surface 111, a stepped structure 112, and a second inclined surface 113 arranged in sequence. The stepped structure 112 is concave in the direction away from the outer region 2.

[0060] The guiding surface 11 is divided into a first inclined surface 111 and a second inclined surface 113 by the stepped structure 112. Since the second inclined surface 113 is closer to the bottom wall 200b of the groove 200a than the first inclined surface 111, the second inclined surface 113 plays a major role in guiding the ink flow, and therefore requires higher machining precision. Because the first inclined surface 111 is farther from the bottom wall 200b, its machining precision can be lower. This reduces the machining difficulty of the guiding surface 11.

[0061] In some examples, such as Figure 8 As shown, the angle between the guide surface 11 and the bottom surface of the inner region 1 is α, then 30°≤α≤60°.

[0062] If α is too small, the slope of the guide surface 11 will be small, resulting in a slower ink flow rate when ink flows onto the guide surface 11, thus reducing inkjet efficiency. If α is too large, such as α = 90°, the guide surface 11 will have difficulty guiding the ink flow, and the distance between the bottom of the guide surface 11 and the side wall 200c will be too large, which is not conducive to the ink flowing to the connection between the side wall 200c and the bottom wall 200b.

[0063] The non-inkjet area 2002 has a portion of its structure located on the bottom wall 200b of the groove 200a. This portion of the non-inkjet area 2002 located on the bottom wall 200b has an adhesive surface, which needs to be bonded to the back cover after inkjet printing. If ink flows onto the adhesive surface during inkjet printing, it will affect the adhesive function of the adhesive surface.

[0064] To prevent ink from flowing onto the adhesive surface, in some examples, such as Figure 4 and Figure 5 As shown, the bottom surface of the inner region 1 is used to fit against the inkjet device 200. The bottom of the inner region 1 fits against the bottom wall 200b of the groove 200a. Under the influence of gravity, the inner region 1 and the bottom wall 200b fit together tightly, allowing the inner region 1 to block the ink and prevent the ink from flowing into the gap between the inner region 1 and the bottom wall 200b.

[0065] In some examples, such as Figure 4 , Figure 5 and Figure 8As shown, the sidewall of the slot 100a near the inner region 1 also has an ink overflow prevention surface 12. The ink overflow prevention surface 12 is connected to the side of the guide surface 11 near the outer region 2, and the bottom end of the ink overflow prevention surface 12 is used to fit against the inkjet device 200. Let the angle between the ink overflow prevention surface 12 and the bottom surface of the inner region 1 be β, and let the angle between the guide surface 11 and the bottom surface of the inner region 1 be α, then β > α. The ink overflow prevention surface 12 is located between the bottom wall 200b and the guide surface 11, and the bottom of the ink overflow prevention surface 12 is fitted against the bottom wall 200b. Let the angle between the ink overflow prevention surface 12 and the bottom wall 200b be β, and let the angle between the guide surface 11 and the bottom wall 200b be α, then β > α. Thus, when the ink flows through the guide surface 11, more ink will flow along the inclined direction of the guide surface 11 towards the junction of the bottom wall 200b and the side wall 200c, while less ink will flow towards the anti-overflow ink surface 12. This ensures that when the ink reaches the bottom wall 200b, it is farther from the anti-overflow ink surface 12, making it less likely for the ink to enter the gap between the internal region 1 and the bottom wall 200b.

[0066] In some examples, β = 90°. This makes the bottom of the inner region 1 thicker, making it less likely for the inner region 1 to warp, thus making it less likely for ink to enter the gap between the inner region 1 and the bottom wall 200b.

[0067] In some examples, such as Figure 8 As shown, if the height of the anti-overflow ink surface 12 is H, then it is 0.2mm≤H≤0.3mm.

[0068] If H is too large, the length of the guiding surface 11 will be too small, making it difficult for the guiding surface 11 to guide the ink. If H is too small, more ink will flow to the anti-overflow surface 12, which is not conducive to preventing ink from entering the gap between the internal area 1 and the bottom wall 200b.

[0069] This disclosure also provides an inkjet apparatus, which includes a nozzle and an inkjet fixture 100. For example... Figure 8 As shown, the ink jetting direction of the nozzle is from the top to the bottom of the guide surface 11. That is, the ink jetting direction of the nozzle is along the inclined direction of the guide surface 11. If the angle between the ink jetting direction and the inclined direction of the guide surface 11 is large, the ink is easily reflected and splashed after reaching the guide surface 11, which may cause the ink to splash to other positions.

[0070] The above description is merely an optional embodiment of this disclosure and is not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the principles of this disclosure should be included within the protection scope of this disclosure.

Claims

1. An inkjet apparatus, characterized by comprising: The inkjet fixture (100) includes an inner region (1) and an outer region (2); A slot (100a) is formed between the inner region (1) and the outer region (2), and the slot (100a) corresponds to the shape of the ink-jet area of ​​the inkjet device (200); The inner region (1) and the outer region (2) are used to cover the inkjet device (200) to block other areas of the inkjet device (200) except for the inkjet area; The slot (100a) has a guide surface (11) on the side wall near the inner region (1). The guide surface (11) is arranged at an angle, pointing from the top to the bottom. The guide surface (11) gradually approaches the outer region (2). The guide surface (11) is used to guide ink to the inkjet area.

2. The inkjet tool of claim 1, wherein The sidewall of the slot (100a) near the inner region (1) is close to one end of the inkjet device (200), and the distance between the slot (100a) and the inkjet device (200) is a first distance. The sidewall of the slot near the outer region (2) is close to one end of the inkjet device (200), and the distance between the slot (100a) and the inkjet device (200) is a second distance. The first distance is less than the second distance. The height difference between the first distance and the second distance, in conjunction with the guide surface (11), forms an inkjet channel.

3. The inkjet fixture according to claim 2, characterized in that, The outer region (2) has a shielding part, which is used to shield the top of the side wall (200c) of the groove (200a) of the area to be inkjetted.

4. The inkjet tool of claim 3, wherein the at least one of the plurality of nozzles is configured to eject a drop of ink having a volume of about 1 picoliter to about 10 picoliters. If the height of the shading part of the outer region (2) protruding relative to the side wall (200c) is D, then 0.4mm≤D≤1mm.

5. The inkjet tool of claim 3, wherein, The outer region (2) includes a first plate (21) and a second plate (22) arranged in a bent manner; The first plate (21) and the second plate (22) are bent and arranged. The first plate (21) is located between the inner region (1) and the second plate (22). The groove (100a) is formed between the side wall of the first plate (21) facing away from the second plate (22) and the inner region (1). The end of the first plate (21) away from the second plate (22) is used to extend into the groove (200a). The top of the first plate (21) and the second plate (22) constitute the shielding part. The second plate (22) is used to shield the top of the side wall (200c).

6. The inkjet tool of claim 5, wherein, There is a gap (10) between the second plate (22) and the top of the side wall (200c).

7. The inkjet tool of any of claims 1-6, wherein, Multiple slots (100a) are formed between the inner region (1) and the outer region (2) at intervals; The plurality of slots (100a) are arranged sequentially along the circumference of the outer region (2), and the plurality of slots (100a) are respectively used to be opposite to the plurality of ink-jet areas of the inkjet device (200).

8. The inkjet tool of claim 1, wherein, There is a connecting rib (3) between the inner region (1) and the outer region (2). The two ends of the connecting rib (3) are connected to the inner region (1) and the outer region (2) respectively. The connecting rib (3) corresponds to the non-inkjet area (2002) of the inkjet device (200) to be inkjetized. The connecting rib (3) is used to block the non-inkjet area (2002).

9. The inkjet tool of claim 8, wherein, A plurality of connecting ribs (3) are provided at intervals between the inner region (1) and the outer region (2).

10. The inkjet tool of claim 8, wherein, The width of the connecting rib (3) along the circumferential direction of the outer region (2) is greater than or equal to the width of the non-inkjet region (2002) along the circumferential direction of the outer region (2); On the projection plane parallel to the bottom surface of the inner region (1), the two first sidewalls (2002a) of the non-inkjet region (2002) are located between the two second sidewalls (3a) of the connecting rib (3), or the two first sidewalls (2002a) of the non-inkjet region (2002) are opposite to the two second sidewalls (3a) of the connecting rib (3).

11. The inkjet tool of any of claims 1-6, wherein, Along the direction close to the outer region (2), the guide surface (11) includes a first inclined surface (111), a stepped structure (112), and a second inclined surface (113) arranged in sequence; The stepped structure (112) is concave in the direction away from the external region (2).

12. The inkjet tool of any of claims 1-6, wherein, Let α be the angle between the guide surface (11) and the bottom surface of the internal region (1), then 30°≤α≤60°.

13. The inkjet fixture according to any one of claims 1-6, characterized in that, The bottom surface of the inner region (1) is used to fit with the inkjet device (200).

14. The inkjet tool of claim 13, wherein, The slot (100a) also has an ink-proof surface (12) on the side wall near the inner region (1); The anti-overflow ink surface (12) is connected to the guide surface (11) on the side near the outer region (2), and the bottom end of the anti-overflow ink surface (12) is used to fit with the inkjet device (200); Let β be the angle between the anti-overflow ink surface (12) and the bottom surface of the inner region (1), and let α be the angle between the guide surface (11) and the bottom surface of the inner region (1), then β > α.

15. The inkjet tool of claim 14, wherein, β＝90°。 16. An inkjet printer, characterized in that, The inkjet device includes a nozzle and an inkjet fixture (100) as described in any one of claims 1-15; The ink ejection direction of the nozzle is along the top to the bottom of the guide surface (11).

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