Supporting seat, adjusting module and inkjet printing trolley

Abstract

The present application relates to the field of printing technology, and discloses a supporting seat, an adjusting module and an inkjet printing trolley. When the printing nozzle is installed on the supporting seat, the flexible supporting arm and the printing nozzle abut, the mounting portion is supported on the printing nozzle, and after the printing nozzle is thermally deformed due to its own temperature rise, the flexible supporting arm will be flexibly deformed to limit the displacement of the printing nozzle. The mounting portion and the surrounding frame are connected through the flexible supporting arm, thereby reducing the influence of the thermal deformation of the printing nozzle on the mounting portion. The positioning structure is arranged on the mounting portion, and the positioning of the printing nozzle in the supporting seat is also affected by the thermal deformation of the printing nozzle, thereby reducing the influence and improving the positioning accuracy of the printing nozzle. The adjusting module can fine-tune the position of the supporting seat, enhance the mounting and positioning effect of the supporting seat on the printing nozzle, and the printing nozzle will not produce excessive displacement under the influence of thermal deformation, so that the positioning accuracy of the printing nozzle is higher, and the overall printing quality of the inkjet printing trolley is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of printing technology, in particular to a support seat, an adjusting module and an inkjet printing trolley. BACKGROUND

[0002] The printed board ink printing equipment is used for accurately spraying ink or solder paste on the circuit board, and the spraying precision directly determines the performance of the circuit. As the core component of the ink printing equipment, the installation structure design of the nozzle is crucial to ensure the precision of the nozzle. A reasonable installation structure can effectively reduce the influence of mechanical errors and vibration on the nozzle.

[0003] In order to improve the installation and positioning precision of the nozzle, the related technology proposes a multi-nozzle combined nozzle adjusting mechanism of an inkjet printer, a glass bead screw, a conical adjusting block assembly I and a conical adjusting block assembly II are arranged on the nozzle mounting seat, the position of the printing nozzle assembly can be flexibly adjusted by adjusting the above components, and the installation and positioning precision of the nozzle is improved.

[0004] The above-mentioned nozzle adjusting mechanism considers the installation and positioning precision of the printing nozzle before use, but does not consider that the printing nozzle will be deformed due to the temperature rise of the equipment during work. When the printing nozzle is deformed, it will press the glass bead screw or other adjusting components connected thereto, so that the glass bead screw and other adjusting components change compared with the original fixed position, thereby causing the printing nozzle to displace compared with the nozzle mounting seat, affecting the positioning precision of the nozzle during use, and further affecting the printing quality. SUMMARY

[0005] Based on the above problems, the purpose of the present application is to provide a support seat, an adjusting module and an inkjet printing trolley, which can improve the positioning precision of the printing nozzle during work and improve the printing quality.

[0006] In order to achieve the above-mentioned purpose, the following technical solutions are provided:

[0007] In a first aspect, the present application provides a support seat, comprising:

[0008] The surrounding frame comprises a flexible support arm, a first surrounding beam and a second surrounding beam, the first surrounding beam and the second surrounding beam are arranged at intervals, and the first surrounding beam and the second surrounding beam are connected by the flexible support arm, and the flexible support arm can abut against the printing nozzle;

[0009] The mounting portion is connected with the flexible support arm, and the mounting portion can abut against and connect to one end of the printing nozzle;

[0010] The positioning structure is arranged on the mounting portion, and the positioning structure can abut against the side wall of the printing nozzle.

[0011] Optionally, the support base further comprises a mounting boss, the mounting boss and the positioning structure are protruded on opposite sides of the mounting portion.

[0012] Specifically, the first enclosing beam comprises a main body portion and a terminal portion, the main body portion is provided with a relief surface on a side close to the terminal portion, the relief surface is inclined relative to a horizontal plane, and the flexible support arm is connected to the terminal portion.

[0013] Specifically, the positioning structure comprises a first positioning member and a second positioning member, the first positioning member is capable of abutting against the print head in a first direction, and the second positioning member is capable of abutting against the print head in a second direction, the first direction and the second direction are arranged at an included angle.

[0014] More specifically, the positioning structure further comprises a positioning protrusion, the positioning protrusion is arranged on the mounting portion and capable of abutting against the print head.

[0015] In a second aspect, the present application further provides an adjusting module, comprising a mounting base, an adjusting structure and the above-mentioned support base, the mounting base and the support base are detachably connected, and the adjusting structure is capable of adjusting the position of the support base relative to the mounting base.

[0016] Specifically, the adjusting structure comprises a first adjusting member connected to the mounting base and / or a second adjusting member connected to the mounting base, the first adjusting member is capable of adjusting the position of the support base relative to the mounting base in a first direction, the second adjusting member is capable of adjusting the position of the support base relative to the mounting base in a second direction, and the first direction and the second direction are arranged at an included angle.

[0017] More specifically, the first adjusting member is provided with a first driving surface, the first enclosing beam is provided with a first driven surface, the first driven surface is capable of moving in the first direction under the pushing of the first driving surface; the second adjusting member is provided with a second driving surface, the second enclosing beam is provided with a second driven surface, and the second driven surface is capable of moving in the second direction under the pushing of the second driving surface.

[0018] Optionally, the adjusting module further comprises a limiting structure, the limiting structure is arranged on the mounting base, the limiting structure comprises a first abutting portion and a second abutting portion, the first abutting portion abuts against the support base in the first direction, the second abutting portion abuts against the support base in the second direction, and the first direction and the second direction are arranged at an included angle.

[0019] In a third aspect, the present application further provides an inkjet printing trolley, comprising a print head and the above-mentioned adjusting module, the print head and the support base are detachably connected.

[0020] The present application has the following beneficial effects:

[0021] The present application provides a support seat, when a printing head is installed on the support seat, a flexible supporting arm abuts against the printing head, and a mounting portion supports the printing head, when the printing head is thermally deformed due to temperature rise of equipment, the flexible supporting arm will be deformed to limit displacement of the printing head, the mounting portion and the surrounding frame are connected through the flexible supporting arm, thereby reducing the influence of thermal deformation of the printing head on the mounting portion, and a positioning structure is arranged on the mounting portion, so that the influence of thermal deformation of the printing head on positioning of the printing head in the support seat is reduced, and positioning accuracy of the printing head is improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments of the present application will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of the contents of the embodiments of the present application and the drawings.

[0023] Fig. 1 is a structural schematic view of an inkjet printing trolley provided by the embodiments of the present application;

[0024] Fig. 2 is a structural schematic view of a support seat and a limiting structure provided by the embodiments of the present application;

[0025] Fig. 3 is a structural schematic view of an adjusting module provided by the embodiments of the present application.

[0026] In the drawings:

[0027] 1, printing head; 2, surrounding frame; 21, flexible supporting arm; 22, first surrounding beam; 221, main body portion; 2211, avoiding surface; 222, end portion; 223, first driven surface; 23, second surrounding beam; 231, second driven surface; 3, mounting portion; 4, mounting boss; 5, mounting base; 6, positioning structure; 61, first positioning member; 62, second positioning member; 63, positioning boss; 7, adjusting structure; 71, first adjusting member; 711, first driving surface; 72, second adjusting member; 721, second driving surface; 8, limiting structure; 81, first abutting portion; 82, second abutting portion. DETAILED DESCRIPTION

[0028] In order to make the technical problems solved by the present application, the technical solutions adopted and the technical effects reached more clear, the technical solutions of the embodiments of the present application will be further described in detail below with reference to the drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative effort belong to the scope of protection of the present application.

[0029] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance. Among them, the terms "first direction" and "second direction" are two different directions.

[0030] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, or it can be a detachable connection; it can be a mechanical connection, or it can be an electrical connection; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0031] As shown in Figs. 1 to 3 The present embodiment provides a support seat, which comprises an enclosing frame 2, a mounting portion 3 and a positioning structure 6. The enclosing frame 2 comprises a flexible support arm 21, a first enclosing beam 22 and a second enclosing beam 23. The first enclosing beam 22 and the second enclosing beam 23 are arranged at intervals, and are connected by the flexible support arm 21. The flexible support arm 21 can abut the print head 1. The mounting portion 3 is connected to the flexible support arm 21, and can abut and connect to one end of the print head 1. The positioning structure 6 is arranged on the mounting portion 3, and can abut the side wall of the print head 1. In order to adapt to the conventional shape of the print head 1, in the present embodiment, the first enclosing beam 22 and the second enclosing beam 23 are arranged in parallel. It should be noted that the shape of the first enclosing beam 22 and the second enclosing beam 23 can be placed in other forms according to actual application requirements.

[0032] When the print head 1 is installed on the support base, it is located between the first retaining beam 22 and the second retaining beam 23. The flexible support arm 21 abuts against the print head 1, and the mounting part 3 supports the print head 1. During use, when the print head 1 undergoes thermal deformation due to its own temperature rise, it will compress the surrounding retaining frame 2. The flexible support arm 21 will undergo flexible deformation, thus limiting the displacement of the print head 1. The mounting part 3 and the retaining frame 2 are connected by the flexible support arm 21, thereby reducing the impact of the thermal deformation of the print head 1 on the mounting part 3. The positioning structure 6 is set on the mounting part 3, thus reducing the impact of the thermal deformation of the print head 1 on the positioning of the print head 1 in the support base, and improving the positioning accuracy of the print head 1. To improve the structural strength of the retaining frame 2, both the first retaining beam 22 and the second retaining beam 23 can contain rigid materials, such as stainless steel.

[0033] The specific structure of the support base in this embodiment will be described below.

[0034] To improve the positioning effect of the print head 1 within the support base, two mounting parts 3 are provided, respectively located at both ends of the print head 1. Correspondingly, a flexible support arm 21 can be provided at each end of the print head 1. The flexible support arm 21 is connected to the first retaining beam 22 and the second retaining beam 23, and is also connected to the mounting part 3. The flexible support arm 21 can be a plate-like structure with a thickness between 0.8mm and 1.2mm. In other embodiments, a set of flexible components can be provided at each end of the print head 1, each set of flexible components including two flexible support arms 21. Both flexible support arms 21 are connected to the second retaining beam 23 and the first retaining beam 22, and are located on both sides of the mounting part 3. To improve the deformation effect of the flexible support arms 21, other numbers of flexible support arms 21 can be provided according to actual needs, which are not limited here.

[0035] like Fig. 2 As shown, the support base in this embodiment also includes a mounting boss 4, which and the positioning structure 6 protrude from opposite sides of the mounting portion 3. With the mounting boss 4 provided, a certain distance is maintained between the support base and the platform on which it is placed, thereby improving the heat dissipation of the print head 1 within the support base, reducing the heat transferred from the print head 1 to the support base during printing, and thus reducing the impact of thermal deformation of the print head 1 on the support base, thereby improving the positioning accuracy of the print head 1 within the support base. It should be noted that in other embodiments, mounting bosses 4 may also be provided at the lower parts of the first retaining beam 22 and the second retaining beam 23, respectively.

[0036] The first enclosing beam 22 in the embodiment includes a main body part 221 and an end part 222, and the main body part 221 is provided with a relief surface 2211 on the side close to the end part 222, the relief surface 2211 is arranged obliquely compared with the horizontal plane, and the flexible support arm 21 is connected to the end part 222. The relief surface 2211 can prevent the complete adhesion between the printing head 1 and the main body part 221, avoid the excessive stress on the side of the main body part 221 close to the end part 222 when the printing head 1 is deformed by heat, and ensure the structural reliability of the first enclosing beam 22 and the stable work of the printing head 1. On the other hand, the relief surface 2211 can also avoid the damage of the flexible support arm 21 connected to the end part 222 due to the excessive stress, and ensure that the flexible support arm 21 can normally produce flexible deformation to disperse the force received by the mounting part 3. It can be understood that, in order to ensure the structural reliability of the second enclosing beam 23 and the stable work of the printing head 1, the second enclosing beam 23 can adopt the same structural design as the first enclosing beam 22 to avoid the complete adhesion between the printing head 1 and the second enclosing beam 23.

[0037] Specifically, the positioning structure 6 in the embodiment includes a first positioning member 61 and a second positioning member 62, the first positioning member 61 can abut against the printing head 1 along a first direction, the second positioning member 62 can abut against the printing head 1 along a second direction, and the first direction and the second direction are arranged at an angle. The first positioning member 61 and the second positioning member 62 abut against the printing head 1 along different directions, which improves the positioning effect of the positioning structure 6 on the printing head 1. The first direction is the length direction of the support seat, and the second direction is the width direction of the support seat, and the following will not be described in detail.

[0038] As shown in Fig. 2 and Fig. 3 , the positioning structure 6 can also include a positioning protrusion 63, which is arranged on the mounting part 3 and can abut against the printing head 1. In the embodiment, in order to enhance the positioning effect of the support seat on the printing head 1, the printing head 1 is provided with one mounting part 3 on each side along the first direction, the first positioning member 61 and the second positioning member 62 are arranged on the mounting part 3 on one side, and the positioning protrusion 63 is arranged on the mounting part 3 on the other side. The positioning protrusion 63 in the embodiment is in V shape to adapt to the V-shaped notch of the printing head 1, and the shape of the positioning protrusion 63 can also be adjusted according to the shape of the printing head 1, which will not be limited here.

[0039] More specifically, to adapt to the shape of the printing head 1 and facilitate processing, the first positioning member 61 and the second positioning member 62 can be rectangular positioning blocks fixedly arranged on the mounting portion 3, the first positioning member 61 extends in the second direction, and the second positioning member 62 extends in the first direction. The first positioning member 61, the second positioning member 62, and the mounting portion 3 can also be processed by an integrated molding process and integrally formed on the mounting portion 3, which simplifies the assembly process and also enhances the connection strength of the first positioning member 61 and the second positioning member 62 with the mounting portion 3, respectively. In other embodiments, the first positioning member 61 can be provided with a first mounting hole, and the second positioning member 62 can also be provided with a second mounting hole, a first fastener is arranged in the first mounting hole, and a second fastener is arranged in the second mounting hole, the first fastener can pass into the first mounting hole and abut against the printing head 1 in the first direction, and the second fastener can pass into the second mounting hole and abut against the printing head 1 in the second direction. The arrangement of the fasteners can reduce the influence of the installation or processing errors of the first positioning member 61 and the second positioning member 62 on the positioning of the printing head 1, improve the installation and positioning accuracy of the printing head 1 initially placed on the support seat, and subsequently adjust the position of the printing head 1 in the support seat by adjusting the fasteners when the printing head 1 is thermally deformed, limit the displacement of the printing head 1 in the support seat, improve the positioning accuracy of the printing head 1 during work, and improve the printing quality. The fasteners can be nuts or bolts.

[0040] In the present embodiment, the enclosing frame 2, the mounting portion 3, the mounting boss 4, and the positioning structure 6 are integrally formed to reduce the assembly difficulty of the support seat and enhance the connection effect between the components.

[0041] In a second aspect, the present application also provides an adjusting module, which comprises a mounting base 5, an adjusting structure 7, and the above-mentioned support seat, the mounting base 5 and the support seat are detachably connected, and the adjusting structure 7 can adjust the position of the support seat relative to the mounting base 5, and the mounting base 5 and the support seat can be connected by bolts. When the printing head 1 is placed on the support seat, the adjusting structure 7 can be used to adjust the position of the support seat relative to the mounting base 5, thereby adjusting the position of the support seat relative to the printing head 1, and enhancing the positioning effect of the support seat on the printing head 1. In the present embodiment, the support seat is placed in the mounting base 5, and the mounting base 5 can provide stable support for the support seat. The mounting base 5 can be designed in a rectangular shape and provided with a cavity allowing the printing head 1 to be placed therein. The arrangement of the mounting base 5 in a regular shape can expand the installation application scenarios of the support seat and improve the applicability of the support seat.

[0042] To enhance the connection between the mounting base 5 and the support, glass ball screws can be installed on the first retaining beam 22 and / or the second retaining beam 23. In this embodiment, glass ball screws are installed on the second retaining beam 23. To reduce heat transfer between the mounting base 5 and the support, a stepped surface can be provided at the end of the first retaining beam 22 and / or the second retaining beam 23 near the mounting base 5. The step height can be 0.5 mm.

[0043] like Fig. 2 and Fig. 3 As shown, the adjustment structure 7 may include a first adjustment member 71 connected to the mounting base 5 and / or a second adjustment member 72 connected to the mounting base 5. The first adjustment member 71 can adjust the position of the support relative to the mounting base 5 along a first direction, and the second adjustment member 72 can adjust the position of the support relative to the mounting base 5 along a second direction. The first direction and the second direction are set at an angle. The adjustment structure 7 allows for flexible adjustment of the position of the support in the first direction and / or the second direction, achieving precise adjustment of the support position, thereby improving the positioning accuracy of the print head 1 installed in the support and improving print quality.

[0044] More specifically, the first adjusting member 71 is provided with a first driving surface 711, and the first retaining beam 22 is provided with a first driven surface 223. The first driven surface 223 can move along a first direction under the push of the first driving surface 711. The second adjusting member 72 is provided with a second driving surface 721, and the second retaining beam 23 is provided with a second driven surface 231. The second driven surface 231 can move along a second direction under the push of the second driving surface 721. Through the cooperation of the first driving surface 711 and the first driven surface 223, and the cooperation of the second driving surface 721 and the second driven surface 231, the movement of the support seat in the first and second directions can be realized, thereby adjusting the position of the support seat. In this embodiment, both the first adjusting member 71 and the second adjusting member 72 are tapered adjusting screws, including a tapered adjusting block and a screw rod. The screw rod is threadedly connected to the mounting base 5. The tapered adjusting block is inverted tapered, that is, the first driving surface 711 and the second driving surface 721 are both tapered surfaces of the outer wall of the tapered adjusting block. Taking the first adjusting member 71 as an example, when the conical adjusting block is rotated and moved downward, its conical surface will gradually press against the first driven surface 223 provided on the first enclosure beam 22, thereby pushing the support seat to move along the first direction and realizing the position adjustment of the support seat in the first direction.

[0045] In the embodiment, the adjusting structure 7 comprises a first adjusting member 71 connected to the mounting base 5 and a second adjusting member 72 connected to the mounting base 5, and the first adjusting member 71 and the second adjusting member 72 are arranged to realize the movement of the support seat in the first direction and the second direction, thereby improving the flexibility of the position adjustment of the support seat. The first adjusting member 71 and the second adjusting member 72 can be arranged on opposite sides of the support seat respectively, so that two operators can simultaneously adjust the position of the support seat on both sides, thereby improving the adjustment efficiency.

[0046] The adjusting module can further comprise a limiting structure 8 arranged on the mounting base 5, and the limiting structure 8 comprises a first abutting part 81 and a second abutting part 82. The first abutting part 81 abuts against the support seat in the first direction, and the second abutting part 82 abuts against the support seat in the second direction. The first direction and the second direction are arranged at an included angle. The first abutting part 81 and the second abutting part 82 can limit the movement of the support seat in the first direction and the second direction within the mounting base 5. The first abutting part 81 and the second abutting part 82 can be spring plungers or other elastic components, which are not limited herein.

[0047] In a third aspect, the present application further provides an inkjet printing carriage comprising a printing nozzle 1 and the above adjusting module. The printing nozzle 1 and the support seat are detachably connected. The adjusting module can finely adjust the position of the support seat to adjust the position of the support seat relative to the printing nozzle 1. The adjusting module can adapt to printing nozzles 1 of different sizes through the adjusting action of the adjusting structure 7, and has strong applicability. The printing nozzle 1 under different temperature conditions (45℃, 30℃ and room temperature) is subjected to multiple thermal cycle tests, and the test results show that when the temperature increases from 30℃ to 45℃, the displacement of the printing nozzle 1 in the first direction and the second direction is not more than 1μm; when the temperature increases from room temperature to 45℃, the displacement of the printing nozzle 1 in the first direction and the second direction is not more than 1.5μm. The inkjet printing carriage can accurately install and position the printing nozzle 1. Even if the printing nozzle 1 is affected by thermal deformation, it will not produce excessive displacement in the support seat, and the printing quality of the inkjet printing carriage is high.

[0048] Note that the above only describes the preferred embodiments of the present application and the technical principles applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments herein, and those skilled in the art can make various obvious changes, re-adjustments and substitutions without departing from the scope of the present application. Therefore, although the present application has been described in detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the appended claims.

Claims

1. A support base, characterized by, The enclosure frame (2) comprises a flexible support arm (21), a first enclosure beam (22) and a second enclosure beam (23), the first enclosure beam (22) and the second enclosure beam (23) are arranged at intervals, and the first enclosure beam (22) and the second enclosure beam (23) are connected by the flexible support arm (21), and the flexible support arm (21) can abut the printing nozzle (1); The mounting portion (3) is connected with the flexible support arm (21), and the mounting portion (3) can abut and connect one end of the printing nozzle (1); The positioning structure (6) is arranged on the mounting portion (3), and the positioning structure (6) can abut against the side wall of the printing nozzle (1), the positioning structure (6) comprises a first positioning member (61) and a second positioning member (62), the first positioning member (61) can abut against the printing nozzle (1) in a first direction, the second positioning member (62) can abut against the printing nozzle (1) in a second direction, the first direction and the second direction are arranged at an angle, and the positioning structure (6) further comprises a positioning protrusion (63), the positioning protrusion (63) is arranged on the mounting portion (3) and can abut against the printing nozzle (1); The mounting boss (4) and the positioning structure (6) are arranged on opposite sides of the mounting portion (3). The first enclosure beam (22) comprises a main body portion (221) and a terminal portion (222), the main body portion (221) is provided with a clearance surface (2211) on one side close to the terminal portion (222), the clearance surface (2211) is arranged at an angle relative to the horizontal plane, and the flexible support arm (21) is connected to the terminal portion (222).

2. The support seat according to claim 1, characterized in that, The mounting base (5), the adjusting structure (7) and the support seat of any one of claims 1-2 are detachably connected, and the adjusting structure (7) can adjust the position of the support seat relative to the mounting base (5).

3. A conditioning module, characterized in that, The adjusting structure (7) comprises a first adjusting member (71) connected to the mounting base (5) and / or a second adjusting member (72) connected to the mounting base (5), the first adjusting member (71) can adjust the position of the support seat relative to the mounting base (5) in a first direction, the second adjusting member (72) can adjust the position of the support seat relative to the mounting base (5) in a second direction, and the first direction and the second direction are arranged at an angle.

4. The adjustment module according to claim 3, characterized in that ​ 5. The adjustment module according to claim 4, characterized in that The first adjusting member (71) is provided with a first driving surface (711), the first enclosing beam (22) is provided with a first driven surface (223), and the first driven surface (223) can move along the first direction under the pushing of the first driving surface (711); the second adjusting member (72) is provided with a second driving surface (721), the second enclosing beam (23) is provided with a second driven surface (231), and the second driven surface (231) can move along the second direction under the pushing of the second driving surface (721).

6. The adjustment module of claim 3, wherein, The adjusting module further comprises a limiting structure (8), the limiting structure (8) is arranged on the mounting base (5), the limiting structure (8) comprises a first abutting portion (81) and a second abutting portion (82), the first abutting portion (81) abuts on the support seat along a first direction, and the second abutting portion (82) abuts on the support seat along a second direction, and the first direction and the second direction are arranged at an included angle.

7. Inkjet printing carriage, characterized in that The printing head (1) and the support seat are detachably connected.

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