Multi-printing-head linkage mechanism and printer

Abstract

The utility model provides a multi-printing-head linkage mechanism and a printer. The multi-printing-head linkage mechanism comprises a mounting rack, a driving structure and a printing head assembly. The multi-printing-head linkage mechanism further comprises a sliding block structure and a crank, the driving structure is connected with the mounting frame, and the sliding block structure is driven by the driving structure to do linear motion; the at least two printing head assemblies are connected to the mounting frame in a swinging manner around respective corresponding first axes, and the multiple first axes are arranged along a straight line; a crank is connected between the swing end of each printing head assembly and the sliding block structure. The printer comprises the multi-printing-head linkage mechanism. According to the utility model, one power source is required to drive one sliding block structure to drive the plurality of printing head assemblies to synchronously rotate and swing to reach the printing position, so that the number of power sources is reduced, the structure is simplified, the cost is reduced, the plurality of printing head assemblies can be ensured to synchronously and stably reach the printing position, and the printing stability is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of printers, in particular to a multi-print head linkage mechanism for multi-color printing and a printer. Background Art

[0002] There is a printer capable of multi-color printing, which includes a mounting frame and a plurality of brackets mounted on the mounting frame and arranged at intervals along the extension direction of the mounting frame. A vertically arranged motor is installed on each bracket, and the motor drives a lead screw. The print head is fixedly connected to the lead screw nut. In this way, the print head on each bracket is driven by its corresponding motor to move vertically between a printing position and a non-printing position.

[0003] The existing problems with this type of multi-color printing printer are that it is necessary to configure a plurality of motors of the same number according to the number of print heads, which results in high cost, poor synchronization of the plurality of print heads, and poor working stability of the print heads. Utility Model Content

[0004] The first purpose of the utility model is to provide a multi-print head linkage mechanism with low cost and good stability.

[0005] The second object of the utility model is to provide a printer with low cost and good stability.

[0006] The multi-print head linkage mechanism provided by the first purpose of the utility model includes a mounting frame, a driving structure and a print head assembly; the multi-print head linkage mechanism also includes a slider structure and a crank, the driving structure is connected to the mounting frame, and the slider structure performs linear motion under the drive of the driving structure; at least two print head assemblies are swingably connected to the mounting frame around their respective corresponding first axes, and multiple first axes are arranged along a straight line; a crank is connected between the swing end of each print head assembly and the slider structure.

[0007] It can be seen from the above scheme that compared with the background technology, the utility model utilizes a crank slider mechanism to realize the transmission of the slider structure to the print head assembly, and only needs one power source to drive a slider structure to drive multiple print head assemblies to synchronously swing to the printing position. In this way, not only the number of power sources is reduced, the structure is simplified and the cost is reduced, but also it is well ensured that multiple print head assemblies can reach the printing position synchronously and stably, thereby ensuring printing stability.

[0008] A further solution is that the slider structure includes a plurality of connecting frames that match the number of print head assemblies and are arranged in a straight line, each connecting frame is connected to a corresponding print head assembly; the slider structure also includes a connecting plate that connects the plurality of connecting frames into one.

[0009] As can be seen from the above, this arrangement is also conducive to calling the slider structure a modular component and making it adjustable, and a plurality of connecting frames matching the number of print head assemblies that actually need to be connected can be provided.

[0010] A further solution is that the driving structure includes a motor, a lead screw and a lead screw nut, the lead screw nut is sleeved on the lead screw, the motor drives the lead screw to make the lead screw nut move linearly; the lead screw nut is connected to the slider structure.

[0011] As can be seen from the above, this setting not only enables the swing angle of the print head assembly to be precisely controlled, but also utilizes the self-locking characteristics of the lead screw mechanism to lock the print head assembly in the printing position, thereby ensuring printing quality.

[0012] A further solution is that the slider structure, the crank and the print head assembly form an offset crank slider mechanism.

[0013] As can be seen from the above, this setting method mainly meets the requirements of the upper and lower layout between the slider assembly and the print head assembly to avoid interference with each other's movements; in addition, under this setting, when the print head assembly is in the printing position, the crank pulls the swing end of the print head assembly at an angle relative to the screw, which can better suppress the reverse swing of the print head assembly and has a better locking effect.

[0014] A further solution is that a snap is provided on the print head assembly; the multi-print head linkage mechanism also includes a roller, which is connected to the mounting frame. After the print head assembly swings, it can cooperate with the respective corresponding rollers and the snap is buckled with the rotating shaft of the roller.

[0015] As can be seen from the above, in order to ensure that the print head assembly can swing, there will be gaps between the hinged parts, and these gaps will cause the print head assembly to deviate from the printing position and reduce the printing quality. To this end, the utility model provides a buckle on the print head assembly, and when the print head assembly swings down to the right position, the buckle naturally buckles the rotating shaft of the roller, thereby limiting and positioning the print head assembly, and then ensuring that the same accurate printing position can be reached every time.

[0016] A further solution is that the multi-print head linkage mechanism also includes a slide rail arranged in a straight line between the mounting frame and the slider structure.

[0017] As can be seen from the above, this setting ensures the straightness of the translation of the slider structure and ensures the movement process of the mechanism.

[0018] A further solution is that, in the axial direction of the first axis, the mounting frame includes two side walls arranged opposite to each other, the driving structure and the print head assembly are arranged between the two side walls, and the crank is arranged on the outside of the side walls.

[0019] As can be seen from the above, since the crank swings during action and passes through the rotation axis of the roller, and the two ends of the roller placed between the two side walls are respectively connected to the two side plates, in order to ensure that the installation of the crank does not affect the installation of the roller, the utility model places the crank as a whole on the outside of the mounting frame, which not only avoids the interference problem between the crank and the roller, but also avoids the occurrence of similar problems that the crank may interfere with other structures.

[0020] A further solution is that the print head assembly includes a connected print head support and a print head, and the crank is connected to the print head support.

[0021] A further solution is that in the axial direction of the first axis, the print head bracket includes two side plates arranged opposite to each other, and the print head is connected between the two side plates; the side plates are connected to the crank.

[0022] As can be seen from the above, under this arrangement, during production, the print head modules can be assembled into blocks first and then installed between the two side plates to form a print head assembly. This arrangement makes the assembly structure of the print head assembly more reasonable.

[0023] The second object of the present invention is to provide a printer comprising the above-mentioned multi-print head linkage mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural diagram of the first viewing angle of an embodiment of the multi-print head linkage mechanism of the utility model.

[0025] Figure 2 This is a structural diagram of the first viewing angle of an embodiment of the multi-print head linkage mechanism of the utility model.

[0026] Figure 3 for Figure 1 Enlarged view of point A in the middle.

[0027] Figure 4 for Figure 1 Enlarged view of point B in the middle.

[0028] Figure 5 This is a structural diagram of an embodiment of the multi-print head linkage mechanism of the utility model in a first state after a side wall is hidden.

[0029] Figure 6 This is a structural diagram of an embodiment of the multi-print head linkage mechanism of the utility model in a second state after a side wall is hidden. DETAILED DESCRIPTION

[0030] See also Figure 1 and Figure 2 The printer of this embodiment includes a multi-print head linkage mechanism, which includes a mounting frame 1, a driving structure 2, a slider structure 3, a print head assembly 4, a roller 5, a crank 6 and a slide rail 7. Figure 1In the coordinate system established therein, the x-axis direction is the direction of the straight line in the present invention, the y-axis direction is the axial direction of the first axis 901 , and the z-axis direction is the height direction.

[0031] The mounting frame 1 includes two side walls 11 arranged opposite to each other along the y-axis direction, and of course, also includes a connecting component connected between the two side walls 11; the driving structure 2, the print head assembly 4, the roller 5 and the slide rail 7 are all arranged between the two side walls 11, and the plurality of cranks 6 are arranged outside the side walls 11. The outside of the side wall 11 refers to the outside of the mounting frame 1 and the side facing away from the other side wall 11. Among them, the mounting frame 1 is provided with a plurality of connecting holes and a linear groove 110 penetrating along the y-axis direction and extending along the x-axis direction.

[0032] The driving structure 2 includes a motor 20, a gear set 21, a screw 22 and a screw nut 23 that are sequentially coupled to each other. The screw nut 23 is mounted on the screw 22. The motor 20 drives the screw 22 through the gear set 21 to make the screw nut 23 move linearly. The screw nut 23 is connected to the slider structure 3.

[0033] The slider structure 3 includes three connecting frames 31 that match the number of the print head assembly 4 and are arranged in a straight line, and a connecting plate 32 that connects the three connecting frames 31 into one. Specifically, the connecting frames 31 extend in the y-axis direction into a long strip, and the two ends of each connecting frame 31 extend from the linear grooves 110 of the two side walls 11 to the outside of the two side walls 11; the connecting plate 32 extends in the x-axis direction into a long strip, and the three connecting frames 31 are arranged at equal intervals in the x-axis direction, and the two connecting plates 32 are connected between the three connecting frames 31.

[0034] In addition, the slide rail 7 is arranged in a straight line between the mounting frame 1 and the slider structure 3. Specifically, a support frame is installed on the inner side of the two side walls 11, and the slide rail 7 includes a track 71 and a slide table 72. The track 71 is installed on the support frame, and a slide table 72 is fixed below the extended sides of each connecting frame 31 on the slider structure 3, so that each connecting frame 31 cooperates with the two opposite slide rails 7 on the left and right. In this way, when the motor 20 is working, the slider structure 3 translates in a straight line, and each connecting frame 31 translates in a straight line groove 110.

[0035] The three rollers 5 are installed between the two side walls 11 in a manner extending along the y-axis direction, the rotation axis of the rollers 5 extends along the y-axis direction, and the three rollers 5 are arranged at intervals along the x-axis direction. In addition, in the z-axis direction, the rollers 5 are located at a higher position than the slider structure 3, that is, the rollers 5 are located above the slider structure 3.

[0036] Combination Figure 3 and Figure 4The print head assembly 4 includes a connected print head bracket 42 and a print head 41. The print head bracket 42 includes two side panels 421 arranged opposite to each other along the y-axis direction, and of course, also includes a connecting component extending along the y-axis direction and connected between the two side panels 421. The print head bracket 42 is rotatably connected to the mounting frame 1 at the first axis 901, and the print head 41 is at the swing end of the print head assembly 4. The three first axes 901 are arranged along the x-axis direction. The print head 41 extending along the y-axis direction is connected between the inner sides of the two side panels 421, wherein two buckles 411 extend from both ends of the y-axis on the bracket of the print head 41 itself, and the buckle 411 is provided with a U-shaped bayonet.

[0037] Recombination Figure 5 , one print head assembly 4 matches one connection frame 31. Two cranks 6 are connected between the matching print head assembly 4 and the connection frame 31. The extended end of the connection frame 31 extending outward from the side wall 11 is rotatably connected to the second axis 902 with one end of the crank 6, and the other end of the crank 6 is rotatably connected to the side plate 421 of the print head bracket 42 with the third axis 903, and the third axis 903 is on the swing end of the print head assembly 4.

[0038] Combination Figure 5 and Figure 6 After the motor 20 is working, the slider structure 3 moves in a straight line and drives the plurality of cranks 6 to force the plurality of print head assemblies 4 to move from Figure 5 Non-printing position swings to Figure 6 The printing position shown. Therefore, the utility model only needs one power source to drive the three print head assemblies 4 to swing synchronously to the printing position. In this way, not only the number of power sources is reduced, the structure is simplified and the cost is reduced, but also it is well ensured that the multiple print head assemblies 4 can reach the printing position synchronously and stably, and the printing stability is ensured. Furthermore, the utility model sets a buckle 411 on the print head assembly 4. When the print head assembly 4 swings down into place, the buckle 411 naturally buckles the rotating shaft 51 of the roller 5, thereby limiting and positioning the print head assembly 4, and then ensuring that the same accurate printing position can be reached every time.

[0039] In other embodiments, the driving structure adopts a linear module.

[0040] In other embodiments, the slider structure is an integral piece.

[0041] In other embodiments, the crank is disposed on the inner side of the side wall, but the crank needs to be bent to avoid the roller.

[0042] In other embodiments, under the premise of ensuring that no interference occurs, the slider structure, crank and print head assembly form a centrifugal crank slider mechanism.

[0043] Finally, it should be emphasized that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A multi-print head linkage mechanism, including a mounting frame, a driving structure and a print head assembly; Features: The multi-print head linkage mechanism further comprises a slider structure and a crank, the driving structure is connected to the mounting frame, and the slider structure moves linearly under the drive of the driving structure; At least two of the print head assemblies are swingably connected to the mounting frame around their respective first axes, and a plurality of the first axes are arranged along the straight line; The crank is connected between the swing end of each print head assembly and the slider structure.

2. The multi-print head linkage mechanism according to claim 1, characterized in that: The slider structure includes a plurality of connecting frames matching the number of the print head assemblies and arranged along the straight line, each of the connecting frames being connected to a corresponding one of the print head assemblies; The slider structure also includes a connecting plate connecting the plurality of connecting frames into one.

3. The multi-print head linkage mechanism according to claim 2, characterized in that: The driving structure comprises a motor, a lead screw and a lead screw nut, wherein the lead screw nut is sleeved on the lead screw, and the motor drives the lead screw to make the lead screw nut move linearly; The lead screw nut is structurally connected to the slider.

4. The multi-print head linkage mechanism according to any one of claims 1 to 3, characterized in that: The slider structure, the crank and the print head assembly form an offset crank slider mechanism.

5. The multi-print head linkage mechanism according to any one of claims 1 to 3, characterized in that: The print head assembly is provided with a buckle; The multi-print head linkage mechanism also includes a roller, which is connected to the mounting frame. After the print head assembly swings, it can cooperate with the corresponding rollers and the buckle is buckled with the rotating shaft of the roller.

6. The multi-print head linkage mechanism according to any one of claims 1 to 3, characterized in that: The multi-print head linkage mechanism also includes a slide rail arranged along the straight line between the mounting frame and the slide structure.

7. The multi-print head linkage mechanism according to any one of claims 1 to 3, characterized in that: In the axial direction of the first axis, the mounting frame includes two side walls that are arranged opposite to each other, the driving structure and the print head assembly are both arranged between the two side walls, and the crank is arranged on the outside of the side walls.

8. The multi-print head linkage mechanism according to any one of claims 1 to 3, characterized in that: The print head assembly comprises a connected print head support and a print head, and the crank is connected to the print head support.

9. The multi-print head linkage mechanism according to claim 8, characterized in that: In the axial direction of the first axis, the print head bracket includes two side plates arranged opposite to each other, and the print head is connected between the two side plates; The side plate is connected to the crank.

10. A printer, characterized in that A multi-print head linkage mechanism comprising any one of claims 1 to 9 above.

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