Spray head adjusting structure and ink-jet printing equipment

Abstract

The utility model belongs to the technical field of ink-jet printing, and particularly relates to a nozzle adjusting structure and ink-jet printing equipment. The utility model relates to a nozzle adjusting structure which comprises a nozzle comprising a positioning hole and at least one first connecting hole, and the positioning hole is provided with a cylindrical-surface-shaped inner wall; a bottom plate; comprising a second connecting hole corresponding to the first connecting hole; the positioning piece comprises a positioning part, the outer wall of the positioning part is in a cylindrical surface shape, the outer wall of the positioning part is matched with the inner wall of the positioning hole, the positioning piece is connected with the bottom plate, and the positioning part is located in the positioning hole. The angle of the nozzle can be conveniently and accurately adjusted.

Description

Technical Field

[0001] This utility model belongs to the field of inkjet printing technology, specifically a printhead adjustment structure and an inkjet printing device. Background Technology

[0002] To print high-quality graphics, technicians need to coordinate the print platform and the ink stack carriage. However, due to the numerous parts in a printer, inconsistencies in the reference points between the print platform on the frame and the ink stack carriage moving along the top of the frame are common during printer installation. While adjusting either the frame or the ink stack carriage can resolve this, the process is extremely complex. One solution is to directly adjust the printhead. However, the printhead is currently secured with multiple M3 screws, and there is a gap between the screws and the screw holes on the printhead. Loosening the screws during each adjustment can cause the printhead to shift in multiple directions, significantly increasing the difficulty of adjustment and leading to problems such as inaccurate positioning and printing. Utility Model Content

[0003] In view of this, the present invention provides a printhead adjustment structure and an inkjet printing device to solve the technical problems of difficult and inaccurate adjustment of inkjet printhead angle in the prior art.

[0004] In a first aspect, this utility model provides a nozzle adjustment structure, comprising:

[0005] A nozzle includes a positioning hole and at least one first connecting hole, the positioning hole having an inner wall in the shape of a cylindrical surface;

[0006] Base plate; including a second connecting hole corresponding to the first connecting hole;

[0007] A positioning component includes a positioning part, the outer wall of which is cylindrical, the outer wall of which mates with the inner wall of the positioning hole, the positioning component is connected to the base plate, and the positioning part is located in the positioning hole;

[0008] A connector that connects the nozzle and the base plate via a first connecting hole and a second connecting hole.

[0009] Preferably, it further includes an adjusting member, which is movably connected to the base plate. During the movement of the adjusting member relative to the base plate, the adjusting member pushes the nozzle to rotate around the positioning member to adjust the angle of the nozzle.

[0010] Preferably, the adjusting component is an adjusting screw, the end of the adjusting screw facing the nozzle is tapered, and the nozzle is provided with an inclined surface that matches the tapered end.

[0011] Preferably, it further includes a first elastic element, which is mounted on the base plate, and the first elastic element and the adjusting element are located on opposite sides of the nozzle in the rotational direction of the nozzle about the positioning element.

[0012] Preferably, it further includes a second elastic element, which is mounted on the base plate, and the first elastic element and the second elastic element respectively abut against two different edges of the nozzle.

[0013] Preferably, there are two first connecting holes, and the two connecting holes and the positioning hole are located at the three vertices of the same triangle.

[0014] Preferably, the two connecting holes and the positioning hole are located at the three vertices of the same right triangle.

[0015] Preferably, the first positioning element is a cylindrical screw.

[0016] Preferably, the positioning element is an expanded diameter positioning pin, which includes a main body and a variable diameter part. The main body is connected to the base plate, the expanded diameter part is sleeved on the main body, and the variable diameter part can rotate around the central axis of the main body. The diameter of the variable diameter part can be reduced to a size smaller than the inner wall of the positioning hole, and can be expanded to a size that abuts against the inner wall of the positioning hole.

[0017] In a second aspect, the present invention also provides an inkjet printing device, including the printhead adjustment structure described in the first aspect.

[0018] Beneficial Effects: The printhead adjustment structure and inkjet printing equipment of this utility model cooperate with a positioning hole on the printhead and a positioning component connected to the base plate. The positioning part of the positioning component is located within the positioning hole, and the outer wall of the positioning part cooperates with the inner wall of the positioning hole, allowing the positioning hole to rotate only around the central axis of the positioning component. Thus, by rotating the positioning hole around the central axis of the positioning component, the entire printhead can rotate around the central axis of the positioning component, thereby adjusting the printhead angle. Since the positioning hole of the printhead is constrained by the positioning component and cannot move during printhead rotation, the method of adjusting the printhead angle in this embodiment does not cause the printhead to move in multiple directions, greatly simplifying the adjustment operation and significantly improving the accuracy of printhead angle adjustment. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments of this utility model will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, and these are all within the protection scope of this utility model.

[0020] Figure 1 This is a schematic diagram of the nozzle adjustment structure using a cylindrical screw in this utility model;

[0021] Figure 2 This is a schematic diagram of the nozzle adjustment structure using an expanded diameter positioning pin in this utility model;

[0022] Figure 3 This is a schematic diagram of the nozzle adjustment structure when the expansion positioning pin is in the non-expansion state in this utility model;

[0023] Figure 4 This is a schematic diagram of the nozzle adjustment structure when the expansion positioning pin is in the expansion state in this utility model;

[0024] The components and their numbers shown in the picture:

[0025] Nozzle 1, positioning hole 11, first connecting hole 12, inclined surface 13, base plate 2, positioning component 3, diameter expansion positioning pin 31, main body 32, diameter changing part 33, connecting component 4, adjusting component 5, first elastic component 6, second elastic component 7. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. It should be noted that, in this document, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. In the description of this utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. Unless otherwise specified, embodiments of the present invention and the various features thereof can be combined with each other, all within the protection scope of the present invention.

[0027] Example 1

[0028] like Figure 1 and Figure 2 As shown, this embodiment provides a nozzle adjustment structure, which mainly includes: a nozzle 1, a base plate 2, a positioning component 3, and a connecting component 4.

[0029] The nozzle 1 has a positioning hole 11 on its cylindrical inner wall and at least one first connecting hole 12; the positioning hole 11 is used for positioning the nozzle 1, and the first connecting hole 12 is used to connect the nozzle 1 and the base plate 2 together. The number of first connecting holes 12 can be one or more, and there is no limitation here.

[0030] The base plate 2 includes a second connecting hole corresponding to the first connecting hole 12; the second connecting hole corresponds to the first connecting hole in that the position of the second connecting hole corresponds to the position of the first connecting hole 12. When the angle of the nozzle 1 is adjusted, the first connecting hole 12 and the second connecting hole, which have a corresponding relationship, are connected together by the connector 4.

[0031] like Figure 1 As shown, the positioning component 3 in this embodiment includes a positioning part. The outer wall of the positioning part is cylindrical, and the outer wall of the positioning part mates with the inner wall of the positioning hole 11. The positioning component 3 is connected to the base plate 2, and the positioning part is located in the positioning hole 11. In this embodiment, the positioning component 3 and the base plate 2 maintain a fixed positional relationship. The positioning component 3 can be connected to the base plate 2, or it can be integrated with the base plate 2; no limitation is made here. In this embodiment, the positioning hole 11 of the nozzle 1 can be fitted onto the positioning component 3, thereby positioning the positioning part in the positioning hole 11. Wherein, the outer wall of the positioning part mates with the inner wall of the positioning hole 11, meaning that both the outer wall of the positioning part and the inner wall of the positioning hole 11 have a cylindrical shape, and the central axes of their cylindrical surfaces coincide. The inner diameter of the inner wall of the positioning hole 11 is slightly larger than the outer diameter of the outer wall of the positioning part. For example, the positioning hole 11 and the positioning part can adopt a fit relationship with a tolerance of H7 / h6. When the positioning part is installed in the positioning hole 11, five of the six degrees of freedom of the relative movement between the nozzle 1 and the base plate 2 are accurately defined. Only the degree of freedom of rotation around the central axis of the positioning part is not restricted. Therefore, in this embodiment, the angle of the nozzle 1 can be conveniently adjusted while the positions of the nozzle 1 and the base plate 2 are accurately defined.

[0032] Because the nozzle 1 and the base plate 2 are fitted with cylindrical surfaces, and the inner diameter of the inner wall of the positioning hole 11 is slightly larger than the outer diameter of the outer wall of the positioning part, the nozzle 1 can rotate accurately around the central axis of the positioning part without moving in other directions.

[0033] In this embodiment, the connector 4 connects the nozzle 1 and the base plate 2 through the first connecting hole 12 and the second connecting hole. The connector 4 can be a threaded connector, such as a screw, bolt, or similar fastener.

[0034] The process of adjusting the nozzle 1 using the nozzle 1 adjustment structure in this embodiment is as follows: First, ensure that the positioning member 3 and the base plate 2 maintain a fixed relative position, neither moving nor rotating. If the positioning member 3 and the base plate 2 are not an integral structure, the positioning member 3 can be installed on the base plate 2 first. Then, the positioning hole 11 of the nozzle 1 is fitted onto the aforementioned positioning member 3. Then, the nozzle 1 is rotated according to the adjustment needs until the nozzle 1 is rotated to a suitable angle. Then, the connector 4 is used to pass through the first connecting hole 12 and the second connecting hole, thereby accurately and reliably fixing the nozzle 1 and the base plate 2 at the current angle.

[0035] The nozzle 1 adjustment structure of this embodiment also includes an adjustment member 5, which is movably connected to the base plate 2. During the movement of the adjustment member 5 relative to the base plate 2, the nozzle 1 is pushed to rotate around the positioning member 3 to adjust the angle of the nozzle 1.

[0036] Because this embodiment movably connects the adjusting member 5 to the base plate 2, the adjusting member 5 maintains a connection with the base plate 2 while also being able to move relative to it. Therefore, when adjusting the angle of the nozzle 1, the movement of the adjusting member 5 can be used to push the nozzle 1 to rotate around the positioning member 3. This adjustment method allows the operator to more conveniently and accurately adjust the angle of the nozzle 1. Figure 1 and Figure 2 As shown, based on this, in this embodiment, the adjusting member 5 can also be set as an adjusting member 5 with a threaded structure, such as an adjusting screw. The adjusting screw is threadedly connected to the base plate 2, so that rotating the adjusting screw can move the adjusting screw relative to the base plate 2 in a direction closer to or away from the nozzle 1, thereby adjusting the angle of the nozzle 1. The aforementioned method converts the inclination of the nozzle 1 into the rotation of the adjusting member 5, which not only makes the adjustment process less laborious, but also increases the accuracy of the fine adjustment process.

[0037] In applications requiring high print quality, the adjustment of the printhead 1 angle is also very critical, demanding even greater precision. In this embodiment, the end of the adjusting screw facing the printhead 1 is tapered, and the printhead 1 is provided with an inclined surface 13 that matches the tapered end. When precisely adjusting the printhead 1 angle, the tapered end of the adjusting screw rests against the inclined surface 13 of the printhead 1. The movement of the adjusting screw can then be divided into two parts: a movement perpendicular to the inclined surface 13 and a movement parallel to the inclined surface 13. The movement perpendicular to the inclined surface 13 is transmitted to the printhead 1. Thus, during the operator's operation of the adjusting screw, the printhead 1 can undergo subtle angle changes under drive, meeting the precision requirements even in scenarios requiring fine adjustments.

[0038] like Figure 1 and Figure 2 As shown, the nozzle 1 adjustment structure in this embodiment also includes a first elastic element 6. The first elastic element 6 is mounted on the base plate 2, and the first elastic element 6 and the adjustment element 5 are located on opposite sides of the nozzle 1 in the rotation direction of the nozzle 1 around the positioning element 3. The first elastic element 6 can be a spring, a sheet, or other component or structure that can generate elastic deformation under external force and has the tendency to recover elastic deformation.

[0039] In this embodiment, when adjusting the nozzle 1 angle using the adjusting member 5, the adjusting member 5 pushes the nozzle 1 on one side of the nozzle 1's rotation direction, while the first elastic member 6 abuts against the nozzle 1 on the other side of the nozzle 1's rotation direction. This ensures that the nozzle 1 remains in contact with the end of the adjusting member 5, and the position of the adjusting member 5 maintains a strict correspondence with the nozzle 1 angle. Thus, the nozzle 1 angle can be easily and accurately adjusted by moving the adjusting member 5. Furthermore, when the adjusting member 5 moves backward (away from the nozzle 1), the first elastic member 6 can push the nozzle 1 to rotate closer to the adjusting member 5. Therefore, whether the adjusting member 5 moves forward or backward, the nozzle 1 will rotate accordingly. This allows the nozzle 1 to rotate in two directions by simply moving the adjusting member 5, further increasing the convenience of nozzle 1 angle adjustment.

[0040] The nozzle 1 adjustment structure in this embodiment also includes a second elastic element 7, which is mounted on the base plate 2. The first elastic element 6 and the second elastic element 7 respectively abut against two different sides of the nozzle 1.

[0041] In this embodiment, the first elastic element 6 and the second elastic element 7 press the nozzle 1 against two different sides of the nozzle 1, thereby applying force to the nozzle 1 at different positions and in different directions to provide stability during the nozzle 1 angle adjustment process and prevent the operator from being unable to keep the nozzle 1 in the desired angular position due to the rotation of the nozzle 1.

[0042] In this embodiment, there are two first connecting holes 12, and the two connecting holes and the positioning hole 11 are located at the three vertices of the same triangle. This embodiment uses the two connecting holes and the positioning hole 11 to form a fixed connection structure in a triangle, which can provide stability in the relative position of the printhead 1 and the base plate 2 after connection, so that the printhead 1 maintains an accurate angular position during the reciprocating movement of the printing module.

[0043] In this embodiment, the two connecting holes and the positioning hole 11 are located at the three vertices of the same right triangle, so that the connection position and the positioning position of the nozzle 1 are in a right triangle relationship, making the connection between the nozzle 1 and the base plate 2 more secure.

[0044] like Figure 1 As shown, in this embodiment, the first positioning element 3 is a cylindrical screw. Using a cylindrical screw for the first positioning element 3 facilitates the connection between the first positioning element 3 and the base plate 2, and also allows the nozzle 1 to rotate around the central axis of the first positioning element 3. This not only ensures reliable connection and accurate positioning, but also reduces costs.

[0045] Because the outer diameter of the first positioning element 3 and the inner diameter of the positioning hole 11 need to satisfy the requirement that the nozzle 1 rotates strictly around the central axis of the first positioning element 3, the relationship between the outer diameter of the first positioning element 3 and the inner diameter of the positioning hole 11 is difficult to control accurately. Figure 2 As shown, in this embodiment, the first positioning element 3 is an expanded diameter positioning pin 31, as... Figure 3 and Figure 4 As shown, the expanded diameter positioning pin 31 includes a main body 32 and a variable diameter part 33. The main body 32 is connected to the base plate 2. The expanded diameter part is sleeved on the main body 32. The diameter of the variable diameter part 33 can be reduced to a size smaller than the inner wall of the positioning hole 11, and can be expanded to a size that abuts against the inner wall of the positioning hole 11.

[0046] like Figure 3 As shown, when adjusting the angle of the nozzle 1 using the expanding diameter positioning pin 31, the expanding diameter positioning pin 31 can be first installed on the base plate 2, and the diameter-changing part 33 of the expanding diameter positioning pin 31 can be reduced to be smaller than the size of the inner wall of the positioning hole 11, so that the nozzle 1 can be fitted onto the first positioning member 3, as shown. Figure 4As shown, the variable diameter portion 33 is then extended to a size that abuts against the inner wall of the positioning hole 11, so that the first positioning member 3 and the positioning hole 11 fit tightly together, eliminating the gap between them, avoiding unnecessary movement of the nozzle 1 relative to the base plate 2, and realizing the rotation of the nozzle 1 during the angle adjustment process by rotating the variable diameter portion 33 relative to the main body portion 32.

[0047] The above description is merely a specific embodiment of this utility model. Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model.

Claims

1. A spray head adjustment structure characterized by, The spray head adjusting structure comprises: a spray head comprising a positioning hole and at least one first connecting hole, the positioning hole having a cylindrical inner wall; a bottom plate comprising a second connecting hole corresponding to the first connecting hole; a positioning member comprising a positioning part, the outer wall of the positioning part being cylindrical, the outer wall of the positioning part being matched with the inner wall of the positioning hole, the positioning member being connected with the bottom plate, and the positioning part being located in the positioning hole; a connecting member connecting the spray head and the bottom plate through the first connecting hole and the second connecting hole.

2. The showerhead adjust structure of claim 1, wherein, The adjusting member is movably connected with the bottom plate, and the adjusting member pushes the spray head to rotate around the positioning member to adjust the angle of the spray head during movement relative to the bottom plate.

3. The showerhead adjust structure of claim 2, wherein, The adjusting member is an adjusting screw, the end of the adjusting screw towards the spray head is tapered, and the spray head is provided with a slope matching the tapered end.

4. The showerhead adjust structure of claim 2, wherein, The first elastic member is installed on the bottom plate, and the first elastic member and the adjusting member are located on opposite sides of the spray head in the rotation direction of the spray head rotating around the positioning member.

5. The showerhead adjust structure of claim 4, wherein, The second elastic member is installed on the bottom plate, and the first elastic member and the second elastic member respectively abut against two different edges of the spray head.

6. The showerhead adjust structure of claim 1, wherein The number of the first connecting holes is two, and the two connecting holes and the positioning hole are located at three vertices of the same triangle.

7. The showerhead adjust structure of claim 6, wherein The two connecting holes and the positioning hole are located at three vertices of the same triangle.

8. The showerhead adjustment structure of any of claims 1-7, wherein, The first positioning member is a cylindrical screw.

9. The showerhead adjust structure of any of claims 1-7, wherein, The positioning member is an expanding positioning pin, which comprises a main body part and a variable-diameter part, the main body part is connected with the bottom plate, the expanding part is sleeved on the main body part, the variable-diameter part can rotate around the center axis of the main body part, the diameter of the variable-diameter part can be reduced to be smaller than the size of the inner wall of the positioning hole, and can be expanded to abut against the inner wall of the positioning hole.

10. Inkjet printing apparatus, characterized in that The spray head adjusting structure comprises: any one of claims 1 to 9.

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