A multi-layer adjustable printhead fixture

Abstract

This utility model relates to the technical field of printhead fixing devices, and more particularly to a multi-layer adjustable printhead fixing device, including a base plate. The base plate has a mating groove on its surface, a positioning pin fixedly installed on its inner surface, a first positioning block fixedly installed on its inner surface, a connecting block with a threaded hole fixedly installed on one side surface of the base plate, an adjusting screw connected to the side of the base plate, and a screw top block fixedly installed on one side surface of the base plate. This multi-layer adjustable printhead fixing device, through a first adjusting plate and a second adjusting plate, forms a multi-layer, two-stage adjustable device. The first adjusting plate is installed in the corresponding position, with the upper left corner as the reference for adjustment, allowing adjustment in only one direction for angle adjustment. The first adjusting plate, installed in conjunction with the second adjusting plate, can simultaneously adjust the front-to-back position and tilt angle, giving the overall device the advantages of controllable adjustment and high installation accuracy.

Description

Technical Field

[0001] This utility model relates to the technical field of printhead fixing devices, and in particular to a multi-layer adjustable printhead fixing device. Background Technology

[0002] The printhead is a key component in a printer that outputs information from ink or thermal transfer ribbon to the media. It is mainly used in inkjet printers and dot matrix printers. Printers generally have a corresponding mounting plate to fix the printhead. The mounting plate or mounting bracket usually has corresponding slots or guide posts to fix the position of the printhead. Then, the fixing screws are tightened at the diagonal positions. During this process, it is necessary to keep the position of the printhead precisely aligned to ensure the accuracy of printing. Therefore, a multi-layer adjustable printhead fixing device is needed.

[0003] Most existing printhead fixing devices use slots or other structures directly cut into the mounting plate for easy installation, resulting in a fixed installation that cannot be adjusted during the installation process. This can lead to a slight misalignment of the printhead after installation.

[0004] To address the aforementioned issues, a search revealed a patent with publication number CN114749606A that discloses a printhead mounting device. The patent proposes "using a mounting base plate with several printhead receiving slots to conveniently, quickly, and accurately assemble single or modular printheads into a large printhead, facilitating printing over large areas or regions, thus improving the printer's applicability and efficiency." While the printhead can be mounted using several printhead receiving slots, the dimensions of these slots need to be precisely defined, which cannot guarantee the accuracy of the printhead installation.

[0005] In light of this, in-depth research into the aforementioned issues led to the creation of this case. Utility Model Content

[0006] The purpose of this utility model is to provide a multi-layer adjustable printhead fixing device to solve the problem mentioned in the background art. Most printheads are installed by directly opening corresponding slots or other structures on the mounting plate for easy installation. The printheads are directly fixed and cannot be adjusted during the installation process, which may cause the printhead to shift after installation.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a multi-layer adjustable printhead fixing device, comprising a base plate, a mating groove formed on the surface of the base plate, a positioning pin fixedly installed on the inner surface of the base plate, a first positioning block fixedly installed on the inner surface of the base plate, a connecting block with a threaded hole fixedly installed on one side surface of the base plate, an adjusting screw connected to the side of the base plate, a screw top block fixedly installed on one side surface of the base plate, a first adjusting plate correspondingly placed above the mating groove, a first fixing block integrally formed on one side surface of the first adjusting plate, a first spring fixedly installed in a round hole on one side surface of the first fixing block, a second adjusting plate simultaneously arranged above the mating groove, a second positioning block fixedly installed on one side surface of the second adjusting plate, a stop block integrally formed on one side surface of the second adjusting plate, second fixing blocks integrally formed on both sides surface of the second adjusting plate, a second spring fixedly installed in a round hole on one side surface of the second fixing block, a printhead placed on the upper surface of the first adjusting plate, and a tapered screw threadedly connected to one end of the connecting block.

[0008] Preferably, the first adjusting plate is provided in four sets, and the position of the docking groove in the upper left corner is used to directly install the first adjusting plate. The remaining three sets of docking grooves are respectively used to install the corresponding second adjusting plates, and the second adjusting plates correspond one-to-one with the three sets of the first adjusting plates.

[0009] Preferably, the first adjusting plate is a reference adjusting plate, which adjusts the angle using the circular hole in the lower left corner as the base point, and the second adjusting plate is a front-to-back adjusting plate, which moves back and forth by cooperating with the positioning pin on the surface of the base plate and its own oval hole.

[0010] Preferably, the first positioning block matches the size of the lower left circular hole on the surface of the first adjusting plate at the upper left corner, and the second positioning block matches the size of the lower left circular holes on the surface of the other three sets of the first adjusting plate. The inner rings of the first positioning block and the second positioning block are both threaded structures.

[0011] Preferably, the first spring installed on the first fixing block on the upper surface of the first adjustment plate in the upper left corner is pressed against the inner surface of the base plate, the first spring installed on the first fixing block on the upper surface of the other three sets of the first adjustment plate is pressed against the side surface of the stop block, and the second spring is pressed against the partition plate provided on the inner surface of the base plate respectively.

[0012] Preferably, the oval holes on the surface of the first adjusting plate correspond one-to-one with the oval holes on the surface of the second adjusting plate, the tapered screw is threadedly connected to the connecting block, and the tapered surface of the tapered screw pushes the first adjusting plate at the upper left corner to adjust the angle.

[0013] Preferably, there are six sets of adjusting screws, two sets of which are threadedly connected to the screw top block and respectively correspond to the first adjusting plate and the second adjusting plate, and the remaining adjusting screws are threadedly connected to the side of the base plate and respectively correspond to the first adjusting plate and the second adjusting plate.

[0014] Compared with the prior art, the beneficial effects of this utility model are: the multi-layer adjustable printhead fixing device, together with the first adjustment plate and the second adjustment plate, forms a multi-layer two-level adjustable device. The first adjustment plate is installed in the corresponding position, with the upper left corner as the reference for adjustment. Only one direction is adjusted to adjust the angle. The first adjustment plate installed in conjunction with the second adjustment plate can simultaneously adjust the front and rear position and the tilt angle, so that the overall device has the advantages of adjustable control and high installation accuracy. Attached Figure Description

[0015] Figure 1 This is a top view of the structural appearance of this utility model;

[0016] Figure 2 This is a schematic diagram of the overall appearance and structure of the present utility model;

[0017] Figure 3 This is an exploded view of the external structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the base plate structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the first adjusting plate structure of this utility model;

[0020] Figure 6 This is a schematic diagram of the second adjusting plate structure of this utility model.

[0021] In the diagram: 1. Base plate; 2. Connecting groove; 3. Positioning pin; 4. First positioning block; 5. Connecting block; 6. Adjusting screw; 7. Screw top block; 8. First adjusting plate; 9. First fixing block; 10. First spring; 11. Second adjusting plate; 12. Second positioning block; 13. Stop block; 14. Second fixing block; 15. Second spring; 16. Print head; 17. Tapered screw. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-6 This utility model provides a technical solution: a multi-layer adjustable printhead fixing device, including a base plate 1, a mating groove 2 on the surface of the base plate 1, a positioning pin 3 fixedly installed on the inner surface of the base plate 1, a first positioning block 4 fixedly installed on the inner surface of the base plate 1, a connecting block 5 with a threaded hole fixedly installed on one side surface of the base plate 1, an adjusting screw 6 connected to the side of the base plate 1, a screw top block 7 fixedly installed on one side surface of the base plate 1, a first adjusting plate 8 correspondingly placed above the mating groove 2, and a first fixing block 9 integrally formed on one side surface of the first adjusting plate 8. A first spring 10 is fixedly installed in a round hole on one side surface of the first fixing block 9. A second adjusting plate 11 is also provided above the docking groove 2. A second positioning block 12 is fixedly installed on one side of the upper surface of the second adjusting plate 11. A stop block 13 is integrally formed on one side of the upper surface of the second adjusting plate 11. A second fixing block 14 is integrally formed on both sides of the surface of the second adjusting plate 11. A second spring 15 is fixedly installed in a round hole on one side of the surface of the second fixing block 14. A print head 16 is placed on the upper surface of the first adjusting plate 8. A tapered screw 17 is threadedly connected to one end of the connecting block 5.

[0024] Furthermore, the first adjusting plate 8 is provided in four sets, and the position of the upper left corner docking groove 2 is used to directly install the first adjusting plate 8. The remaining three sets of docking grooves 2 are respectively installed with corresponding second adjusting plates 11, and the second adjusting plates 11 correspond one-to-one with the three sets of first adjusting plates 8. Through the setting of the first adjusting plate 8, the first adjusting plate 8 directly installed in the upper left corner docking groove 2 is first placed in the position of the first positioning block 4 through the circular hole in its lower left corner. At the same time, the first spring 10 on the side of the first fixing block 9 presses the side of the base plate 1. Then, the tapered screw 17 is connected to the connecting block 5. The tapered screw 17 presses the first adjusting plate 8 to change the angle. After adjustment, it can be fixed by connecting the corresponding screw to the upper end of the first positioning block 4. Secondly, the position of the oval hole on the surface of the first adjusting plate 8 and the circular hole with threaded structure on the surface of the base plate 1 can also be fixed by screws to make the position of the first adjusting plate 8 accurately positioned.

[0025] Furthermore, the first adjusting plate 8 serves as a reference adjusting plate, with the lower left corner circular hole as the base point for angle adjustment. The second adjusting plate 11 is a front-to-back adjusting plate, which moves back and forth by cooperating with the positioning pin 3 on the surface of the base plate 1 and its own oval hole. With the setting of the second adjusting plate 11, the second adjusting plate 11 is first placed through its own oval hole and the positioning pin 3 on the surface of the base plate 1. At the same time, the second spring 15 on one side of the second fixing block 14 presses the partition on the inner side of the base plate 1. Then, under the limit of the positioning pin 3, it moves back and forth. The position of the second adjusting plate 11 is adjusted by rotating the corresponding adjusting screw 6. Finally, it is fixed by bolts and nuts through the remaining oval holes on the surface of the second adjusting plate 11 and the circular hole structure of the base plate 1 itself.

[0026] Furthermore, the size of the first positioning block 4 matches the size of the lower left circular hole on the surface of the first adjusting plate 8 at the upper left corner, and the size of the second positioning block 12 matches the size of the lower left circular holes on the surface of the other three sets of first adjusting plates 8. The inner rings of the first positioning block 4 and the second positioning block 12 are both threaded structures. By setting the first positioning block 4 and the second positioning block 12, the first positioning block 4 and the second positioning block 12 can determine the first reference point for the installation of the first adjusting plate 8.

[0027] Furthermore, the first spring 10 installed on the first fixing block 9 on the upper surface of the first adjusting plate 8 in the upper left corner presses against the inner surface of the base plate 1, and the first spring 10 installed on the first fixing block 9 on the upper surface of the other three sets of first adjusting plates 8 presses against the side surface of the stop block 13. The second spring 15 presses against the partitions set on the inner surface of the base plate 1 respectively. Through the setting of the first spring 10 and the second spring 15, a certain thrust can be provided.

[0028] Furthermore, the oval holes on the surface of the first adjusting plate 8 correspond one-to-one with the oval holes on the surface of the second adjusting plate 11. The tapered screw 17 is threadedly connected to the connecting block 5. The tapered surface of the tapered screw 17 pushes the first adjusting plate 8 in the upper left corner to adjust the angle. Through the setting of the tapered screw 17 and the tapered surface of the tapered screw 17, the tapered surface pushes the first adjusting plate 8 in the upper left corner to adjust the angle while tightening the tapered screw 17 downward.

[0029] Furthermore, there are six sets of adjusting screws 6. Two sets of adjusting screws 6 are threadedly connected to the screw top block 7 and are respectively positioned above and below the first adjusting plate 8 and the second adjusting plate 11. The remaining adjusting screws 6 are threadedly connected to the side of the base plate 1 and are respectively positioned above and below the first adjusting plate 8 and the second adjusting plate 11. By tightening the corresponding adjusting screws 6, the corresponding force can be provided to the first adjusting plate 8 and the second adjusting plate 11.

[0030] Working principle: First, place the base plate 1 horizontally and position the components using the mating grooves 2 on its surface. Install the first adjusting plate 8 in the upper left corner directly into the corresponding mating groove 2, ensuring its lower left circular hole precisely aligns with the first positioning block 4 inside the base plate 1. Simultaneously, the first spring 10 inside the first fixing block 9 presses against the inner wall of the base plate 1, providing initial preload. Then, screw the tapered screw 17 into the threaded hole of the connecting block 5. The tapered surface pushes the first adjusting plate 8 to rotate around the first positioning block 4, adjusting the angle of the print head 16. After completion, fix the upper end and the position of the oblong hole of the first positioning block 4 with screws. Next, install the three sets of second adjusting plates 11 into the remaining mating grooves 2. Their oblong holes cooperate with the positioning pins 3 of the base plate 1 to achieve forward and backward displacement adjustment. The second spring 15 inside the second fixing block 14 presses against the partition of the base plate 1, providing a restoring force. Rotating the corresponding adjusting screw 6 pushes the second adjusting plate 11 to move forward and backward. Above each second adjusting plate 11, a corresponding first adjusting plate 8 is installed, with its lower left circular hole engaging with the second positioning block 12. The first spring 10 presses against the side of the stop block 13, and multi-level position locking is achieved by fixing it with a bolt in an oval hole. Finally, the print head 16 is placed on the upper surface of the four sets of first adjusting plates 8, and the six sets of adjusting screws 6 act on the first adjusting plate 8 and the second adjusting plate 11 respectively to complete the final positioning. This device achieves omnidirectional precise adjustment of the print head 16 through two-stage linkage of reference adjustment and front and rear adjustment.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-layer adjustable printhead fixing device, comprising a base plate (1), characterized in that: The base plate (1) has a mating groove (2) on its surface. A positioning pin (3) is fixedly installed on the inner surface of the base plate (1). A first positioning block (4) is fixedly installed on the inner surface of the base plate (1). A connecting block (5) with a threaded hole is fixedly installed on one side surface of the base plate (1). An adjusting screw (6) is connected to the side of the base plate (1). A screw top block (7) is fixedly installed on one side surface of the base plate (1). A first adjusting plate (8) is placed above the mating groove (2). A first fixing block (9) is integrally formed on one side surface of the first adjusting plate (8). A round hole is formed on one side surface of the first fixing block (9). A first spring (10) is fixedly installed inside. A second adjusting plate (11) is also provided above the docking groove (2). A second positioning block (12) is fixedly installed on one side of the upper surface of the second adjusting plate (11). A stop block (13) is integrally formed on one side of the upper surface of the second adjusting plate (11). A second fixing block (14) is integrally formed on both sides of the surface of the second adjusting plate (11). A second spring (15) is fixedly installed in the round hole on one side of the surface of the second fixing block (14). A print head (16) is placed on the upper surface of the first adjusting plate (8). A tapered screw (17) is threaded to one end of the connecting block (5).

2. The multi-layer adjustable printhead fixing device according to claim 1, characterized in that: The first adjustment plate (8) is provided in four sets, and the position of the upper left corner docking groove (2) is used to directly install the first adjustment plate (8). The remaining three sets of the docking groove (2) are respectively installed with corresponding second adjustment plates (11), and the second adjustment plates (11) correspond one-to-one with the three sets of the first adjustment plates (8).

3. The multi-layer adjustable printhead fixing device according to claim 1, characterized in that: The first adjustment plate (8) is a reference adjustment plate, which adjusts the angle with the lower left corner circular hole as the base point. The second adjustment plate (11) is a front and rear adjustment plate, which moves back and forth by cooperating with the positioning pin (3) on the surface of the base plate (1) and its own oval hole.

4. The multi-layer adjustable printhead fixing device according to claim 1, characterized in that: The first positioning block (4) matches the size of the lower left circular hole on the surface of the first adjustment plate (8) at the upper left corner, and the second positioning block (12) matches the size of the lower left circular holes on the surface of the other three sets of the first adjustment plate (8). The inner rings of the first positioning block (4) and the second positioning block (12) are both threaded structures.

5. The multi-layer adjustable printhead fixing device according to claim 1, characterized in that: The first spring (10) installed on the first fixing block (9) on the upper surface of the first adjustment plate (8) in the upper left corner is pressed against the inner surface of the base plate (1). The first spring (10) installed on the first fixing block (9) on the upper surface of the other three sets of the first adjustment plate (8) is pressed against the side surface of the stop block (13). The second spring (15) is pressed against the partition plate set on the inner surface of the base plate (1).

6. The multi-layer adjustable printhead fixing device according to claim 1, characterized in that: The oval holes on the surface of the first adjusting plate (8) correspond one-to-one with the oval holes on the surface of the second adjusting plate (11). The tapered screw (17) is threadedly connected to the connecting block (5). The tapered surface of the tapered screw (17) pushes the first adjusting plate (8) in the upper left corner to adjust the angle.

7. The multi-layer adjustable printhead fixing device according to claim 1, characterized in that: The adjusting screws (6) are provided in six sets. Two sets of the adjusting screws (6) are threaded to the screw top block (7) and are respectively aligned with the first adjusting plate (8) and the second adjusting plate (11). The remaining adjusting screws (6) are threaded to the side of the base plate (1) and are respectively aligned with the first adjusting plate (8) and the second adjusting plate (11).

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