Printhead and inkjet printing apparatus

Abstract

The utility model discloses a printing head and an ink-jet printing device, and relates to the technical field of printing equipment, the printing head comprises a casing, a detection part and a trigger part, an accommodating cavity is formed in the casing, and two adjacent sides of the casing are respectively provided with a first passing port and a second passing port which are communicated with the accommodating cavity; the detection part is arranged in the accommodating cavity; the triggering component comprises a first touch part, a second touch part and a triggering part, the first touch part, the second touch part and the triggering part are all arranged in the containing cavity, the first touch part and the second touch part are both connected with the triggering part, the first touch part extends out of the first passing opening, the second touch part extends out of the second passing opening, and the triggering part is arranged in the containing cavity. The first touch part and the second touch part can move relative to the first passing opening and the second passing opening respectively under the action of external force, so that the trigger part moves to trigger the detection component. According to the technical scheme, the detection range of the detection mechanism can be enlarged, so that the functionality of the detection mechanism is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of printing equipment, in particular to a printing head and an inkjet printing device. Background Art

[0002] In the related art, since the print head moves continuously during the printing process and is prone to collision with other structures, the print head of the inkjet printing device is usually provided with a collision detection mechanism on its casing. The collision detection mechanism is usually only able to sense collisions on a single side of the casing. When collision detection is required on multiple sides of the print head, multiple detection mechanisms need to be set up correspondingly on different sides, which is inconvenient to use. Utility Model Content

[0003] The main purpose of the utility model is to provide a print head and an inkjet printing device, aiming to increase the detection range of a detection mechanism to improve the functionality of the detection mechanism.

[0004] To achieve the above-mentioned purpose, the print head proposed by the present invention includes:

[0005] A housing, wherein a receiving cavity is formed in the housing, and adjacent two sides of the housing are respectively provided with a first opening and a second opening communicating with the receiving cavity;

[0006] a detection component, the detection component being disposed in the accommodating cavity; and

[0007] A trigger component, the trigger component includes a first touch portion, a second touch portion and a trigger portion, the first touch portion, the second touch portion and the trigger portion are all arranged in the accommodating cavity, the first touch portion and the second touch portion are both connected to the trigger portion, the first touch portion extends out of the first passage, and the second touch portion extends out of the second passage, and the first touch portion and the second touch portion can move relative to the first passage and the second passage respectively under the action of an external force, so that the trigger portion moves and triggers the detection component.

[0008] In one embodiment, the trigger component also includes a rotating shaft, and the first touch portion, the second touch portion and the trigger portion are all connected to the rotating shaft. The rotating shaft can be rotatably arranged in the accommodating cavity, and the trigger portion has an initial position and a trigger position for triggering the detection component. The first touch portion and / or the second touch portion can drive the rotating shaft to rotate under the action of external force, so that the trigger portion moves from the initial position to the trigger position.

[0009] In one embodiment, the trigger portion includes a shift block, which is fixedly connected to the circumferential side of the rotating shaft. In the axial direction of the rotating shaft, the shift block is staggered with the first touch portion and the second touch portion, and the detection component is arranged in the rotation path of the shift block.

[0010] In one embodiment, the print head also includes a first support member, which is fixed to the housing and located in the accommodating cavity, and is provided with a mounting opening extending along the axial direction of the rotating shaft. The rotating shaft rotates through the mounting opening, and the first support member avoids the first touch portion and the second touch portion.

[0011] In one embodiment, the print head further includes a second support member, which is fixed to the housing and located in the accommodating cavity, and is arranged opposite to the detection component in the movement direction of the shift block;

[0012] The shift block is swingably disposed between the second support member and the detection component, so as to abut against the second support member in the initial position and abut against the detection component in the trigger position.

[0013] In one embodiment, there are two shift blocks, which are spaced apart from each other in the axial direction of the rotating shaft. There are two detection components, which are spaced apart along the axial direction of the rotating shaft to cooperate with one shift block respectively.

[0014] In one embodiment, one end of the first contact portion is fixedly connected to a circumferential side of the rotating shaft so as to rotate synchronously with the rotating shaft, and one end of the first contact portion facing away from the rotating shaft is movably disposed through the first opening so as to protrude from the outer wall of the housing.

[0015] One end of the second touch portion is fixedly connected to one side of the first touch portion to rotate synchronously with the first touch portion, and one end of the second touch portion facing away from the first touch portion is movably inserted into the second passage to protrude from the outer wall of the housing.

[0016] In one embodiment, the print head further includes a reset component, which is disposed in the accommodating cavity and fixed to the housing. The reset component elastically abuts against the trigger component to enable the trigger component to reset to an initial position.

[0017] In one embodiment, the trigger component further includes a connecting portion, which is fixedly connected to a circumferential side of the rotating shaft and can rotate synchronously with the rotating shaft;

[0018] The connecting portion and the first contact portion and the second contact portion are staggered in the axial direction of the rotating shaft, and the reset component is elastically connected to the connecting portion.

[0019] In one embodiment, the reset component includes:

[0020] a baffle, the baffle being fixed to the housing and located in the accommodating cavity and spaced apart from the trigger component; and

[0021] An elastic member, two ends of which are respectively connected to the baffle and the trigger component, so as to be elastically deformed when the trigger portion moves from the initial position to the trigger position.

[0022] In one embodiment, the first opening is provided on the bottom side of the housing, and the end of the first contact portion exposed at the first opening includes a plurality of protruding teeth, and the plurality of protruding teeth are sequentially spaced along the length direction of the first opening;

[0023] And / or, the second opening is arranged on both sides of the housing in the movement direction of the print head, and the end of the second contact portion exposed from the second opening includes a bar structure adapted to the second opening.

[0024] The present invention further provides an inkjet printing device, comprising the print head described in any one of the above, wherein the print head comprises:

[0025] A housing, wherein a receiving cavity is formed in the housing, and adjacent two sides of the housing are respectively provided with a first opening and a second opening communicating with the receiving cavity;

[0026] a detection component, the detection component being disposed in the accommodating cavity; and

[0027] A trigger component, the trigger component includes a first touch portion, a second touch portion and a trigger portion, the first touch portion, the second touch portion and the trigger portion are all arranged in the accommodating cavity, the first touch portion and the second touch portion are both connected to the trigger portion, the first touch portion extends out of the first passage, and the second touch portion extends out of the second passage, and the first touch portion and the second touch portion can move relative to the first passage and the second passage respectively under the action of an external force, so that the trigger portion moves and triggers the detection component.

[0028] The print head of the technical solution of the present invention includes a housing and a detection mechanism, wherein a first opening and a second opening are respectively provided on adjacent two sides of the housing; the detection mechanism includes a detection component and a trigger component, the detection component is provided in the housing, and the first touch portion and the second touch portion of the trigger component are respectively exposed at the first opening and the second opening, when either the first touch portion and the second touch portion is subjected to an external collision, at least a portion of the trigger component can move toward the detection component to trigger the detection component and generate a corresponding detection signal, so that anti-collision detection of the adjacent two sides of the housing can be achieved by a single detection mechanism, thereby increasing the detection range of the detection mechanism to improve the functionality of the detection mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0030] Figure 1 A schematic structural diagram of an embodiment of a print head provided by the present invention;

[0031] Figure 2 for Figure 1 A partial enlarged view of point A in the middle;

[0032] Figure 3 for Figure 1 Partial structure diagram of the print head;

[0033] Figure 4 for Figure 1 Another part of the structure of the print head;

[0034] Figure 5 for Figure 1 A schematic cross-sectional view of the print head;

[0035] Figure 6 for Figure 1 A cross-sectional view of a portion of the print head structure;

[0036] Figure 7 This is a structural schematic diagram of an embodiment of the inkjet printing device provided by the present invention.

[0037] Description of Figure Numbers:

[0038] 100. Print head; 10. Housing; 11. First opening; 12. Second opening; 13. First support member; 131. Mounting opening; 14. Second support member; 20. Detection member; 30. Trigger member; 31. First touch portion; 311. Protruding tooth; 32. Second touch portion; 33. Trigger portion; 331. Shift block; 332. Connecting portion; 34. Rotating shaft; 40. Reset member; 41. Baffle; 42. Elastic member; 1000. Inkjet printing device; 200. Drive module; 300. Housing; 300a. Opening; 300b. Cover.

[0039] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0041] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0042] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0043] In related art, the printhead of an inkjet printer typically has a detection mechanism installed on its housing. This mechanism's triggering component is used to trigger the detection component when it comes into contact with an external structure, causing the detection component to generate a corresponding detection signal, thereby implementing the housing's anti-collision detection function. Typically, this triggering component can only sense collisions on a single side of the housing. If anti-collision detection is required for multiple sides of the printhead, multiple detection mechanisms must be installed on different sides, which is inconvenient.

[0044] Therefore, based on the above considerations, the present invention proposes a print head 100 that can implement anti-collision detection on two adjacent sides of the housing 10 through a single detection mechanism, thereby increasing the detection range of the detection mechanism and improving the functionality of the detection mechanism.

[0045] See also Figures 1 to 6 In one embodiment of the present invention, the print head 100 includes a housing 10, a detection component 20, and a trigger component 30. A accommodating cavity is formed in the housing 10, and adjacent sides of the housing 10 are respectively provided with a first opening 11 and a second opening 12 communicating with the accommodating cavity; the detection component 20 is disposed in the accommodating cavity; the trigger component 30 includes a first touch portion 31, a second touch portion 32, and a trigger portion 33. The first touch portion 31, the second touch portion 32, and the trigger portion 33 are all disposed in the accommodating cavity, and the first touch portion 31 and the second touch portion 32 are both connected to the trigger portion 33. The first touch portion 31 extends from the first opening 11, and the second touch portion 32 extends from the second opening 12. Under the action of an external force, the first touch portion 31 and the second touch portion 32 can move relative to the first opening 11 and the second opening 12, respectively, so that the trigger portion 33 moves and triggers the detection component 20.

[0046] The housing 10 may be a hollow box structure, forming a housing for functional modules such as nozzles, circuit boards, and ink cartridges, thereby isolating and protecting the functional modules within the housing 10 and improving the protective performance of the printhead 100. In some embodiments, the housing 10 may be in the shape of a rectangular parallelepiped, a cube, or other shapes.

[0047] Adjacent sides of the housing 10 are provided with a first opening 11 and a second opening 12, respectively, that communicate with the accommodating cavity. The detection component 20 and the trigger component 30 are both disposed within the accommodating cavity of the housing 10. The detection component 20 and the trigger component 30 can be installed and positioned, but are not limited to, by the cavity wall of the accommodating cavity. Specifically, the first contact portion 31 of the trigger component 30 can be partially disposed within the accommodating cavity, while the remaining portion extends from the first opening 11 to the outside of the accommodating cavity, thereby protruding from the outer wall of the housing 10. Similarly, the second contact portion 32 can be partially disposed within the accommodating cavity, while the remaining portion extends from the second opening 12 to the outside of the accommodating cavity, thereby protruding from the outer wall of the housing 10. This arrangement allows the first and second contact portions 31 and 32 to contact external structures before the outer wall of the housing 10, and can trigger the detection component 20 when colliding with the external structure, thereby achieving collision detection of the print head 100.

[0048] It is understandable that when either the first touching portion 31 or the second touching portion 32 is subjected to an external collision, at least a portion of the triggering component 30 can move toward the detecting component 20 to trigger the detecting component 20 and generate a corresponding detection signal.

[0049] In some embodiments, the first touch portion 31 or the second touch portion 32 can be arranged on the side of the print head 100 in the direction of movement. With such arrangement, during the movement of the print head 100, if the trigger component 30 is subjected to an external collision in the direction of movement of the print head 100, the detection component 20 can generate a corresponding detection signal. After receiving the detection signal, the control module of the print head 100 can brake the print head 100 based on the detection signal to prevent the print head 100 from continuing to move and colliding with an external structure. In this way, the anti-collision effect of the print head 100 can be achieved based on the collision detection of the print head 100.

[0050] In other embodiments, the first contact portion 31 or the second contact portion 32 may also be provided on the working surface of the print head 100. Since the printing surface of the print head 100 and the printed material are arranged relative to each other during operation of the print head 100, if a protrusion on the printing material collides with the trigger component 30, the detection component 20 can generate a corresponding detection signal, thereby achieving anti-protrusion detection of the printing material, which is beneficial to ensuring the printing effect of the print head 100.

[0051] It should be noted that, in some embodiments, the trigger component 30 can trigger the detection component 20 through a purely mechanical drive. Specifically, the first touch portion 31 and the second touch portion 32 can be interconnected, so that the trigger component 30 is provided as an integral structure. In this way, when either the first touch portion 31 or the second touch portion 32 is subjected to an external impact, the trigger component 30 can move as a whole toward the detection component 20 under the external force to trigger the detection component 20. Of course, the first touch portion 31 and the second touch portion 32 can also be provided separately, so that they can move toward the detection component 20 under the external force to trigger the detection component 20 respectively.

[0052] In other embodiments, the trigger component 30 may also be configured with a corresponding pneumatic or electric drive structure. When either the first contact portion 31 or the second contact portion 32 of the trigger component 30 is impacted by an external structure, the pneumatic or electric drive structure of the trigger component 30 can drive at least a portion of the trigger component 30 to move toward the detection component 20, thereby triggering the detection component 20. The specific implementation can be configured according to actual needs and is not limited here.

[0053] Furthermore, in some embodiments, the detection component 20 can be configured as a contact trigger. For example, the detection component 20 can be configured as a contact switch. When the trigger component 30 comes into contact with the contact switch during movement, the contact switch can be triggered to generate a corresponding detection signal. Of course, the detection component 20 can also be configured as a pressure sensor or other detection structure that can achieve contact triggering.

[0054] In one feasible embodiment, the detection component 20 includes a switch and an elastic member. The switch K1 is connected to the detection component's power supply circuit. The elastic member can be specifically configured as a spring clip positioned in the travel path of the trigger component 30. When the trigger component 30 disengages from the spring clip, the switch of the detection component 20 disconnects the power supply circuit. When the spring clip is pressed by the trigger component 30, the switch closes and connects the detection component 20's power supply circuit, thereby generating a corresponding detection signal.

[0055] In other embodiments, the triggering method of the detection component 20 can also be set to non-contact triggering. For example, the detection component 20 can be configured as a detection structure such as a distance detection sensor, a photoelectric sensor, etc., which can detect whether the trigger component 30 is moving toward it in a non-contact manner. The specific implementation method can be configured according to actual needs and is not limited here.

[0056] See also Figures 3 to 6In an embodiment of the present invention, the trigger component 30 also includes a rotating shaft 34, and the first touch portion 31, the second touch portion 32 and the trigger portion are all connected to the rotating shaft 34. The rotating shaft 34 can be rotatably arranged in the accommodating cavity. The trigger portion 33 has an initial position and a trigger position of the trigger detection component 20. The first touch portion 31 and / or the second touch portion 32 can drive the rotating shaft 34 to rotate under the action of external force, so that the trigger portion 33 moves from the initial position to the trigger position.

[0057] It should be noted that, in this embodiment, the first touching portion 31 swings in the first direction relative to the rotating shaft 34. Correspondingly, the first opening 11 is extended in the first direction, and the cross-sectional area of ​​the first opening 11 is larger than the first touching portion 31, that is, there is a certain gap between the first opening 11 and the first touching portion 31. In this way, the first opening 11 can leave enough space for the first touching portion 31 to move, so that the first touching portion 31 can be rotatably arranged in the first opening 11, so that the first touching portion 31 can normally drive the rotating shaft 34 to rotate.

[0058] Similarly, the second contact portion 32 swings relative to the rotation shaft 34 in the second direction. Correspondingly, the second opening 12 extends in the first direction, and the cross-sectional area of ​​the second opening 12 is larger than that of the second contact portion 32, that is, there is a certain gap between the second opening 12 and the second contact portion 32. In this way, the second opening 12 can leave sufficient space for the second contact portion 32 to move, so that the second contact portion 32 can be rotatably arranged in the second opening 12, so that the second contact portion 32 can normally drive the rotation shaft 34 to rotate.

[0059] In this way, the first touch portion 31, the second touch portion 32 and the trigger portion 33 can be arranged to rotate coaxially, so that the three can move synchronously around the axial direction of the rotating shaft 34 under the action of an external force. Therefore, when any one of the first touch portion 31 and the second touch portion 32 is subjected to an external collision, the trigger component 30 can rotate around the rotating shaft 34 as a whole under the action of the external force, so that the trigger portion 33 can move from the initial position to the trigger position by rotation.

[0060] Similarly, when the first contact portion 31 and the second contact portion 32 are no longer resisted by the external structure, the trigger portion 33 can rotate from the trigger position to the initial position, and the trigger component 30 can be reset to prepare for subsequent anti-collision detection. The trigger component 30 can reset itself under the action of gravity, or a reset component 40 can be provided to push the trigger component 30 back to its original position, which is not limited here.

[0061] See also Figures 3 to 6In an embodiment of the present invention, the trigger portion 33 includes a shift block 331, which is fixedly connected to the circumferential side of the rotating shaft 34. In the axial direction of the rotating shaft 34, the shift block 331 is staggered with the first touch portion 31 and the second touch portion 32, and the detection component 20 is arranged in the rotation path of the shift block 331.

[0062] The shift block 331 extends radially along the rotating shaft 34, and the detection component 20 is disposed around the rotating shaft 34 and in the rotation path of the shift block 331, so that the shift block 331 can trigger the detection component 20 by rotating about the rotating shaft 34. When the shift block 331 rotates driven by the rotating shaft 34, it can swing toward or away from the detection end of the detection component 20 to switch between the initial position and the trigger position.

[0063] Furthermore, the shift block 331 and the first touch portion 31 and the second touch portion 32 are staggered in the axial direction of the rotating shaft 34 to fully utilize the axial space of the rotating shaft 34 for layout; such an arrangement can also make the first touch portion 31 and the second touch portion 32 avoid each other with the detection component 20 to avoid the first touch portion 31 and the second touch portion 32 from interfering with the detection component 20 during rotation, which is conducive to ensuring normal detection of the detection mechanism.

[0064] Of course, the technical solution of the present invention is not limited to this. In other embodiments, the shift block 331 and the first touch portion 31 and the second touch portion 32 may also be spaced apart in the circumferential direction of the rotating shaft 34 to fully utilize the circumferential space of the rotating shaft 34 for layout, which is not limited here.

[0065] See also Figure 5 In an embodiment of the present invention, the print head 100 further includes a first support member 13, which is fixed to the housing 10 and located in the accommodating cavity, and is provided with a mounting opening 131 extending along the axial direction of the rotating shaft 34. The rotating shaft 34 rotates through the mounting opening 131, and the first support member 13 avoids the first touch portion 31 and the second touch portion 32.

[0066] In one embodiment, the first support member 13 is a plate structure, one end of which is fixed to the wall of the accommodating cavity, and the other end extends toward the rotating shaft 34. A mounting opening 131 is defined for the rotating shaft 34 to pass through. The mounting opening 131 extends through the first support member 13 in the axial direction of the rotating shaft 34, and its shape is adapted to the rotating shaft 34 to better position the rotating shaft 34. This arrangement allows the first support member 13 to securely mount and position the rotating shaft 34, allowing the rotating shaft 34 to be rotatably disposed within the accommodating cavity.

[0067] Furthermore, a pick-and-place channel may be provided on the first support member 13, one end of the pick-and-place channel being connected to the mounting port 131, and the other end being passed through the outer wall of the first support member 13, so that the rotating shaft 34 can be placed in or taken out of the mounting port 131 through the pick-and-place channel, thereby facilitating the assembly convenience of the trigger component 30. The pick-and-place channel may be in a straight line shape so as to facilitate the quick placement of the rotating shaft 34 through the pick-and-place channel. The pick-and-place channel may also be configured as a curve, a broken line, or other shapes. The shape of the pick-and-place channel in this application is not limited. In addition, the pick-and-place channel may be specifically configured at the top of the mounting port 131, so that the rotating shaft 34 is stably limited in the mounting port 131 under the action of gravity, thereby ensuring the installation stability of the trigger component 30.

[0068] The number of first support members 13 can be one, and the rotation shaft 34 can be installed and positioned by a single first support member 13. Alternatively, there can be two or more first support members 13, and each first support member 13 is arranged to avoid the first contact portion 31 and the second contact portion 32. Several first support members 13 can be sequentially spaced along the axial direction of the rotation shaft 34 to coordinate with the installation of the rotation shaft 34, thereby further improving the installation stability of the trigger component 30.

[0069] See also Figure 5 In an embodiment of the present invention, the print head 100 further includes a second support member 14, which is fixed to the housing 10 and located in the accommodating cavity, and is arranged opposite to the detection component 20 in the movement direction of the shift block 331; the shift block 331 is swingably arranged between the second support member 14 and the detection component 20, so as to abut against the second support member 14 in the initial position and abut against the detection component 20 in the trigger position.

[0070] In one embodiment, the second support member 14 is a plate-like structure, and the detection component 20 and the second support member 14 are spaced apart from each other from top to bottom and are both located in the rotation path of the shift block 331. A supporting surface is formed on the end of the second support member 14 facing the detection component 20. With this arrangement, when the shift block 331 is in its initial position, it can abut against the supporting surface of the second support member 14, thereby being stably supported by the second support member 14. When either the first contact portion 31 or the second contact portion 32 of the trigger component 30 is impacted by an external force, the shift block 331 can move from its initial position away from the second support member 14 to move toward the trigger position and approach the detection component 20, thereby abutting and triggering the detection component 20.

[0071] With such an arrangement, the second support member 14 can ensure the position stability of the shift block 331 at the initial position, and the second support member 14 and the detection component 20 can cooperate to limit the movable stroke of the shift block 331 to ensure the movement stability of the shift block 331.

[0072] See also Figures 3 to 6 In the embodiment of the present invention, two shifting blocks 331 are provided, spaced apart from each other in the axial direction of the rotating shaft 34. Two detecting components 20 are provided, spaced apart along the axial direction of the rotating shaft to cooperate with each shifting block 331. This arrangement allows the two detecting components 20 to collaboratively implement collision detection, thereby ensuring detection accuracy.

[0073] Of course, only one detection component 20 can be provided. When one detection component 20 is disposed opposite one shift block 331, the anti-collision detection function of the detection mechanism can be realized. In this case, the detection component 20 can be disposed around either of the two shift blocks 331, which provides greater installation flexibility.

[0074] See also Figure 3 、 Figure 4 and Figure 6 In an embodiment of the present utility model, one end of the first touching portion 31 is fixedly connected to the circumferential side of the rotating shaft 34 so as to rotate synchronously with the rotating shaft 34, and the end of the first touching portion 31 away from the rotating shaft 34 is movably provided through the first passage 11 to protrude from the outer wall surface of the housing 10; one end of the second touching portion 32 is fixedly connected to one side of the first touching portion 31 so as to rotate synchronously with the first touching portion 31, and the end of the second touching portion 32 away from the first touching portion 31 is movably provided through the second passage 12 to protrude from the outer wall surface of the housing 10.

[0075] In this configuration, the second contact portion 32 can be connected to the trigger portion 33 through the first contact portion 31 , which helps to reduce the space occupied by the outer peripheral surface of the rotating shaft 34 of the trigger portion 33 and can make the structure of the trigger component 30 more compact.

[0076] See also Figures 4 to 6 In an embodiment of the present invention, the print head 100 further includes a reset component 40, which is disposed in the accommodating cavity and fixed to the housing 10. The reset component 40 elastically abuts against the trigger component 30 so that the trigger component 30 can be reset to its initial position.

[0077] It is understood that by providing the reset member 40 to apply elastic force to the trigger member 30 to reset the trigger member 30, it is possible to ensure that the trigger member 30 moves into position, allowing the reset trigger member 30 to continue collision detection. The reset member 40 may elastically abut against the trigger member 30 via a torsion spring, a spring, or other elastic structure, which is not limited herein.

[0078] See also Figures 4 to 6In an embodiment of the present invention, the trigger component 30 also includes a connecting portion 332, which is fixedly connected to the circumferential side of the rotating shaft 34 and can rotate synchronously with the rotating shaft 34; the connecting portion 332 and the first touch portion 31 and the second touch portion 32 are staggered in the axial direction of the rotating shaft 34, and the reset component 40 is elastically connected to the connecting portion 332.

[0079] In this embodiment, the trigger component 30 can be provided with a connecting portion 332 to abut against the reset component 40, thereby enabling the trigger component 30 to return to its initial position. In other embodiments, the trigger component 30 may not be provided with the connecting portion 332, and may abut against the reset component 40 via any one of the first contact portion 31, the second contact portion 32, or the trigger portion 33. Of course, the technical solution of the present application is not limited to this. The printhead 100 may also include multiple reset components 40 to elastically abut against multiple parts of the trigger component 30, which is not limited here.

[0080] In one embodiment, the connecting portion 332 is a plate structure, one end of which is connected to the outer peripheral surface of the rotating shaft 34, and the other end is extended along the radial direction of the rotating shaft 34, and is elastically connected to the reset component 40, so that the reset component 40 can drive the connecting portion 332 to rotate around the rotating shaft 34, thereby driving the trigger component 30 to rotate and reset.

[0081] Among them, the connecting portion 332 and the first touch portion 31 and the second touch portion 32 are staggered in the axial direction of the rotating shaft 34 to fully utilize the axial space of the rotating shaft 34 for layout; such an arrangement can also make the first touch portion 31 and the second touch portion 32 and the connecting portion 332 avoid each other, so that the connecting portion 332 and the reset component 40 are elastically connected through the elastic member 42.

[0082] Of course, the technical solution of the present invention is not limited to this. In other embodiments, the connecting portion 332 and the first touch portion 31 and the second touch portion 32 may also be spaced apart in the circumferential direction of the rotating shaft 34 to fully utilize the circumferential space of the rotating shaft 34 for layout, which is not limited here.

[0083] Furthermore, in some embodiments, the first contact portion 31 and the connecting portion 332 are connected to the circumference of the rotating shaft 34 and extend radially along the rotating shaft 34. The first contact portion 31 and the connecting portion 332 can be located in the same plane and connected to each other as an integral structure, thereby increasing the structural strength of the trigger component 30. This configuration can also simplify the structure of the trigger component 30, facilitating its production and processing.

[0084] See also Figure 5 and Figure 6In the embodiment of the present invention, the reset component 40 includes a baffle 41 and an elastic member 42. The baffle 41 is disposed within the accommodating chamber and spaced apart from the trigger component 30. The elastic member 42 is connected to the baffle 41 and the trigger component 30 at both ends, respectively. When the trigger portion 33 moves from the initial position to the triggered position, the elastic member 42 elastically deforms, thereby causing the trigger component 30 to reset. This allows the trigger component 30 to return to its initial position after the collision with the print head 100 is resolved. The elastic member 42 can be a spring, a compression spring, a torsion spring, a compression spring, a rubber band, or other elastic device.

[0085] In one embodiment, the elastic member 42 can be configured as a torsion spring, one end of which is connected to the baffle 41, and the other end of which is connected to the trigger portion 33. Compared to configuring the elastic member 42 as a spring, using a torsion spring as the elastic member 42 facilitates shortening the length of the elastic member 42, thereby reducing the space it occupies within the accommodating cavity. The trigger component 30 can be provided with a retaining structure, which can be, but is not limited to, a retaining block, a retaining groove, or a retaining hole. The end of the torsion spring facing the trigger component 30 can engage with the retaining structure to reduce the risk of the end of the torsion spring slipping off the trigger component 30.

[0086] Furthermore, a mounting post can be provided between the baffle 41 and the trigger component 30. The mounting post is fixed to the housing 10 and is located in the accommodating cavity. The torsion spring can be sleeved on the mounting post so that the torsion spring can be limited and fixed by the mounting post to avoid uncontrollable shaking when the torsion spring is deformed under force, thereby ensuring the improvement of the position stability and reliability of the torsion spring.

[0087] See also Figure 3 and Figure 4 In the embodiment of the present invention, a plurality of first contact portions 31 are provided. These first contact portions 31 are spaced apart from the trigger portion 33 along the axial direction of the rotating shaft 34. A plurality of first openings 11 are spaced apart on one side of the housing 10, with each first opening 11 corresponding to a first contact portion 31. This arrangement enables collision avoidance detection at multiple locations on the same side, further improving the functionality of the detection mechanism.

[0088] Similarly, a plurality of second contact portions 32 are provided, spaced apart from the trigger portion 33 along the axial direction of the rotating shaft 34. A plurality of second openings 12 are spaced apart on one side of the housing 10, with each second opening 12 corresponding to a second contact portion 32. This arrangement enables collision avoidance detection at multiple locations on adjacent two sides, further improving the functionality of the detection mechanism.

[0089] The number of first and second contact portions 31, 32 can be the same, and the first and second contact portions 31, 32 can be arranged one-to-one. For example, each second contact portion 32 can be bent and connected to a first contact portion 31. Alternatively, the number of first and second contact portions 31, 32 can be different, and the first and second contact portions 31, 32 can be staggered in the axial direction of the rotating shaft 34. The specific implementation method can be customized according to actual needs and is not limited here.

[0090] See also Figure 1 In an embodiment of the present invention, the first opening 11 is disposed on the bottom side of the housing 10 , and the first contact portion 31 exposed at one end of the first opening 11 includes a plurality of protruding teeth 311 , which are sequentially spaced apart along the length direction of the first opening 11 .

[0091] In this embodiment, the housing 10 has a working surface formed on its bottom side. This working surface is provided with a printing port that communicates with the accommodating cavity. The printing module of the print head 100 is exposed through the printing port on the working surface, allowing the printing module to operate outward to print a predetermined pattern on the printing material located at the bottom of the print head 100. By positioning the first port 11 on the working surface on the bottom side of the housing 10, the first contact portion 31 of the trigger component 30 is exposed on the working surface through the first port 11. This allows detection of whether the first contact portion 31 collides with the printing material, thereby preventing the printing material from protruding, thereby ensuring the print quality of the print head 100.

[0092] Optionally, at least a portion of the surface of the protruding tooth 311 is an arcuate surface, which helps reduce stress concentration at the sensing end of the first contact portion 31. Furthermore, when the protruding tooth 311 is subjected to an external collision, the arcuate surface can abut against the external structure to provide a certain buffering effect, thereby helping to reduce the risk of collision deformation of the first contact portion 31.

[0093] See also Figure 1 In an embodiment of the present invention, the second opening 12 is disposed on both sides of the housing 10 in the direction of movement of the print head 100 , and one end of the second contact portion 32 exposed at the second opening 12 includes a bar structure 321 adapted to the second opening 11 .

[0094] In this embodiment, the print head 100 is arranged to be movable in the left-right direction. By positioning the second openings 12 on the left and right sides of the housing 10, the second contact portion 32 of the trigger component 30 can be exposed to the work surface through the second openings 12. This allows for collision avoidance during movement of the print head 100, thereby providing a hand-pinch prevention effect. Of course, the print head 100 can also be arranged to be movable in the front-to-back direction, in which case the second openings 12 can be positioned on the front and back sides of the housing 10, respectively, without limitation.

[0095] Optionally, the end of the second contact portion 32 exposed from the second opening 12 includes a strip-shaped structure 321. At least a portion of the surface of the strip-shaped structure 321 is curved, which helps reduce stress concentration at the sensing end of the second contact portion 32. Furthermore, when the strip-shaped structure 321 is subjected to an external impact, the curved surface can abut against the external structure to provide a certain buffering effect, thereby helping to reduce the risk of deformation of the second contact portion 32 due to the impact.

[0096] The present invention also proposes an inkjet printing device 1000, which includes a print head 100. The specific structure of the print head 100 refers to the above embodiment. Since the inkjet printing device 1000 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0097] In some embodiments, the inkjet printing device 1000 includes a housing 300 and a driver module 200. The housing 300 defines a housing space within which the driver module 200 and the print head 100 are disposed. Specifically, the print head 100 is movably mounted on a frame within the housing space and is in transmission connection with the driver module 200, thereby enabling movement thereof.

[0098] The housing 300 may have an opening 300a communicating with the receiving space. The housing 300 also includes a cover 300b that can open or close the opening 300a to facilitate access to and placement of printed materials into the receiving space. The cover 300b may be transparent or translucent to facilitate direct observation of the printing process through the cover 300b.

[0099] In some embodiments, the inkjet printing device 1000 may also include functional modules such as a printing table, an ink supply module, and an ink stack module. The printing table can be used to support printing materials, the ink supply module can supply ink to the print head 100, and the ink stack module can cooperate with the print head 100 to achieve maintenance of the print head 100. They are not listed one by one here.

[0100] It should be noted that the inkjet printing device 1000 proposed in this application can be a thermal inkjet printer, a piezoelectric inkjet printer, a white ink heat transfer printer, a white ink direct inkjet printer, or the like, as long as it is a device used to eject ink for printing. The printing material used by the inkjet printing device 1000 can be configured as paper, film, cloth, or other printing materials, without limitation herein.

[0101] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A print head, characterized in that: include: A housing, wherein a receiving cavity is formed in the housing, and adjacent two sides of the housing are respectively provided with a first opening and a second opening communicating with the receiving cavity; a detection component, the detection component being disposed in the accommodating cavity; and A trigger component, the trigger component includes a first touch portion, a second touch portion and a trigger portion, the trigger portion is arranged in the accommodating cavity, the first touch portion and the second touch portion are both connected to the trigger portion, the first touch portion extends out of the first passage, and the second touch portion extends out of the second passage, and the first touch portion and the second touch portion can move relative to the first passage and the second passage respectively when touched, so that the trigger portion moves and triggers the detection component.

2. The print head according to claim 1, wherein The trigger component also includes a rotating shaft, and the first touch part, the second touch part and the trigger part are all connected to the rotating shaft. The rotating shaft is rotatably arranged in the accommodating cavity. The trigger part has an initial position and a trigger position for triggering the detection component. When the first touch part and / or the second touch part is touched, the rotating shaft can be driven to rotate so that the trigger part moves from the initial position to the trigger position.

3. The print head according to claim 2, wherein: The trigger portion includes a shift block, which is fixedly connected to the circumferential side of the rotating shaft. In the axial direction of the rotating shaft, the shift block is staggered with the first contact portion and the second contact portion. The detection component is provided in the rotation path of the shift block.

4. The print head according to claim 3, wherein: The print head also includes a first support member, which is fixed to the housing and located in the accommodating cavity and is provided with a mounting opening. The rotating shaft rotates through the mounting opening, and the first support member avoids the first touch portion and the second touch portion.

5. The print head according to claim 3, wherein: The print head further includes a second support member, which is fixed to the housing and located in the accommodating cavity and is arranged opposite to the detection component in the movement direction of the shift block; The shift block is swingably disposed between the second support member and the detection component, so as to abut against the second support member in the initial position and abut against the detection component in the trigger position.

6. The print head according to claim 3, wherein: There are two shift blocks, which are spaced apart from each other in the axial direction of the rotating shaft. There are two detection components, which are spaced apart from each other along the axial direction of the rotating shaft. The two detection components cooperate with the two shift blocks respectively.

7. The print head according to claim 2, wherein: One end of the first contact portion is fixedly connected to the circumference of the rotating shaft and extends radially along the rotating shaft to rotate synchronously with the rotating shaft. One end of the first contact portion, which is away from the rotating shaft, is movably arranged through the first opening to protrude from the outer wall of the housing. One end of the second touch portion is fixedly connected to one side of the first touch portion to rotate synchronously with the first touch portion, and one end of the second touch portion facing away from the first touch portion is movably inserted into the second passage to protrude from the outer wall of the housing.

8. The print head according to claim 2, wherein: The print head further includes a reset component, which is disposed in the accommodating cavity and fixed to the housing. The reset component elastically abuts against the trigger component, so that the trigger component can automatically reset to an initial position.

9. The print head according to claim 8, wherein The trigger component further includes a connecting portion, the connecting portion being fixedly connected to a circumferential side of the rotating shaft and capable of rotating synchronously with the rotating shaft, the connecting portion and the first contact portion and the second contact portion being staggered in the axial direction of the rotating shaft, and the reset component being elastically connected to the connecting portion; And / or, the reset component includes a baffle and an elastic member, the baffle is fixed to the housing and is located in the accommodating cavity, and is arranged relative to the trigger component; the two ends of the elastic member are respectively connected to the baffle and the trigger component, so that the trigger part is elastically deformed when the trigger part moves from the initial position to the trigger position.

10. An inkjet printing device, characterized in that: Comprising the print head according to any one of claims 1 to 9.

Images