A sliding rail type print head quick change structure

Abstract

The utility model provides a slide rail formula printing head quick change structure, including mounting seat, the bottom fixed mounting of mounting seat has the column of hanging, the bottom rotatory connection of column of hanging has the base, the outside equidistance annular arrangement fixed mounting of base has track installation group, one side installation of track installation group has printing head body, during the application of this technical scheme, through setting limit module, track installation group and adjustment module, printing head body quick dismouting and flexible adjustment can be realized, when dismouting, pulling dismouting half ring makes the bayonet lock separate from the limit hole, can pull the slide with printing head, after loosening, the bayonet lock resets automatically and is fixed, need not complex tool, when adjusting, operating limit screw can unlock the adjustment disc and adjust the angle, pulling half ring removes the limit and can slide the slide and adjusts the horizontal position, and then solve the problem that printing head replacement is complicated and position angle is fixed in prior art, improve dismouting efficiency and use adaptability.

Description

Technical Field

[0001] This utility model relates to the field of printing technology, and in particular to a slide rail type quick-change structure for printheads. Background Technology

[0002] 3D printing (3DP), as an important branch of rapid prototyping technology, boasts a unique technological path that uses digital model files as a basis and employs bondable materials such as powdered metals, plastics, photosensitive resins, rubbers, and ceramics to construct objects layer by layer. It has shown broad application prospects in numerous fields such as industrial manufacturing, aerospace, and healthcare. During the 3D printing process, printing material is extruded from the print head nozzle. The print nozzles are classified into different specifications based on the actual opening diameter. Different specifications of print nozzles directly determine the surface roughness of the processed parts. Furthermore, in the 3D printing manufacturing of certain special parts, different thicknesses of print head are required to achieve the desired surface roughness. To meet complex processing needs, a 3D printer typically needs to be equipped with printheads of various diameters for timely replacement during processing. However, traditional 3D printers have significant limitations in printhead design and replacement. Each traditional 3D printer is equipped with only one printhead, which is fixed to the printer by a threaded connection. When it is necessary to replace the nozzle to adapt to different processing requirements, the operator must stop the machine and then use a wrench to screw the nozzle in or out along the thread. The entire replacement process not only consumes a lot of time but also requires the operator to exert a lot of physical effort, which seriously affects the processing efficiency of 3D printing and makes it difficult to meet the needs of modern production for efficient operation.

[0003] To address the inconvenience of replacing printheads in traditional single-head 3D printers, related technical fields have attempted improvements. Chinese patent CN212097550U discloses a multi-head quick-change 3D printing head. This device mainly consists of a rotating disk, a fixed disk, an elastic element, and a connecting rod. Multiple printheads are located at the bottom of the rotating disk, centered on the same circle. The fixed disk is located above the rotating disk and has connectors at positions corresponding to the printheads. The connecting rod passes through the rotation centers of the rotating and fixed disks, with a limiting structure at its end and an end cap at its top. The elastic element is located above the fixed disk, and after the connecting rod passes through it, the elastic element is confined between the end cap of the connecting rod and the fixed disk. Simultaneously, the rotating and fixed disks have an internal and external tooth meshing structure centered on the rotation center, with the number of internal and external teeth matching the number of printheads. Theoretically, this multi-head quick-change 3D printing head can achieve online rapid printhead replacement, improving the low replacement efficiency of traditional single-head printers to some extent.

[0004] However, in practical applications, the aforementioned multi-head quick-change 3D printing head still has significant drawbacks. The device cannot flexibly adjust the lateral position and angle of each printing head. After installation, each printing head is in a fixed position, making it inconvenient to quickly pull out and remove the printing heads during use, and also difficult to fine-tune the position and angle of the printing heads. Since different specifications and models of printing heads differ in shape and size, this design of fixed printing head position and inflexible adjustment cannot adapt to the installation and use requirements of different specifications of printing heads, resulting in a significant reduction in the adaptability and flexibility of the device in practical applications. It is difficult to meet the diverse 3D printing processing scenarios. It is evident that the existing 3D printing head technology still has certain defects and shortcomings, and further improvement and design are urgently needed. Utility Model Content

[0005] To address the aforementioned problems, this invention proposes a slide rail type quick-change printhead structure to more accurately resolve the problems described above.

[0006] This utility model is achieved through the following technical solution:

[0007] This utility model proposes a slide rail type printhead quick-change structure, including a mounting base, a hanging column fixedly installed at the bottom of the mounting base, a base rotatably connected to the bottom of the hanging column, a rail mounting assembly fixedly installed in a ring at equal intervals on the outer side of the base, a printhead body installed on one side of the rail mounting assembly, and a limit module fixedly installed at the bottom of the base, the top limit end of the limit module engaging with the rail mounting assembly;

[0008] The track mounting assembly includes side rails, which are fixedly installed on the outside of the base in a ring with equal spacing. A sliding plate is slidably connected inside the side rails. Limiting holes are linearly arranged with equal spacing on the bottom of the sliding plate. The limiting end of the limiting module is inserted into the limiting hole. An adjustment module is fixedly installed on the rear end of one side of the sliding plate. The printhead body is installed on the outside of the adjustment module.

[0009] Furthermore, the bottom of the mounting base has mounting holes arranged in a ring at equal intervals, the mounting holes being countersunk holes, and the front side of the mounting base has a reserved slot for connecting the print head.

[0010] Furthermore, the limiting module includes a rail frame, which is fixedly installed at the bottom of the base. A limiting spring is fixedly connected inside the rail frame. A movable block is fixedly installed at the lower end of the limiting spring. Side limiting plates are fixedly installed in a ring at equal intervals on the outer side of the movable block. A locking pin is fixedly connected to the top outer end of the side limiting plate, and the end of the locking pin is inserted into the inside of a limiting hole.

[0011] Furthermore, a connecting shaft is fixedly connected to the bottom of the movable block, and a base plate is fixedly connected to the bottom of the connecting shaft through the rail frame. A detachable pull-out half-ring is fixedly connected to the bottom of the base plate.

[0012] Furthermore, the overall cross-sectional shape of the skateboard is cross-shaped, the cross-sectional shape of the internal cavity of the side rail is also cross-shaped, and the outer surface corners of the mounting base are all rounded.

[0013] Furthermore, the adjustment module includes a side plate, which is fixedly installed on one rear side of the slide plate. An adjustment disc is rotatably connected to the outer side of the side plate, and a fixing block is fixedly connected to the outer side of the adjustment disc. The print head body is installed on the outer side of the fixing block by bolts. A limit screw is threadedly connected to the outer side of the side plate, and the end of the limit screw passes through the side plate.

[0014] Furthermore, the outer side of the side plate has equally spaced, ring-shaped locking holes, and the end of the limiting screw is inserted into the inner side of the locking hole. The limiting screw is a hand-tightening screw.

[0015] The beneficial effects of this utility model are:

[0016] 1. During the application of this technical solution, by setting up a limit module and a track mounting group, the printhead body can be quickly disassembled and assembled during use. During operation, only the half-ring needs to be pulled out and pulled out to drive the relevant components to disengage the locking pin from the limit hole, and then the slide plate with the printhead body can be directly pulled out or installed. After being released, the limit spring can automatically drive the locking pin to reset and lock in place. No complicated tools or cumbersome steps are required, thus achieving the effect of efficient disassembly and assembly of the printhead. This solves the problem of cumbersome and time-consuming printhead replacement operations in the existing technology, and greatly improves the efficiency of printhead disassembly and assembly.

[0017] 2. During the application of this technical solution, by setting up adjustment modules and limit modules, the printhead body can be flexibly adjusted during use. When adjusting the angle, the adjustment plate can be unlocked by operating the hand-tightened limit screw, and the angle can be adapted by rotating and fixing it again. When adjusting the lateral position, the half-ring can be pulled out to release the limit, and the slide plate can be released after sliding to the target position to automatically limit it. Thus, the effect of precise adjustment of the printhead angle and lateral position is achieved, which solves the problem of the fixed position and angle of the printhead in the existing technology and the inability to adapt to different specifications of printheads, and improves the adaptability of printhead use. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of this utility model from below;

[0020] Figure 3 This is a schematic diagram of the structure of this utility model in its extended state, viewed from below.

[0021] Figure 4 This is a schematic diagram of the adjustment module structure of this utility model.

[0022] In the diagram: 1. Mounting base; 2. Hanging column; 3. Base; 4. Printhead body; 5. Limiting module; 51. Rail frame; 52. Limiting spring; 53. Movable block; 54. Side limiting plate; 55. Locking pin; 56. Coupling shaft; 57. Base plate; 58. Disassembly and assembly pull-out half ring; 6. Rail mounting assembly; 61. Side rail; 62. Slide plate; 63. Limiting hole; 64. Adjustment module; 641. Side plate; 642. Adjustment plate; 643. Fixing block; 644. Limiting screw; 645. Locking hole; 7. Mounting hole; 8. Printhead connection reserved slot. Detailed Implementation

[0023] 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.

[0024] Example 1

[0025] A sliding rail type printhead quick-change structure includes a mounting base 1, a hanging column 2 fixedly mounted on the bottom of the mounting base 1, a base 3 rotatably connected to the bottom of the hanging column 2, a rail mounting assembly 6 fixedly mounted in a ring at equal intervals on the outer side of the base 3, a printhead body 4 mounted on one side of the rail mounting assembly 6, and a limiting module 5 fixedly mounted on the bottom of the base 3, with the top limiting end of the limiting module 5 engaging with the rail mounting assembly 6.

[0026] The track mounting assembly 6 includes side rails 61, which are arranged in a ring at equal intervals and fixedly installed on the outside of the base 3. A sliding plate 62 is slidably connected inside the side rails 61. Limiting holes 63 are linearly arranged at equal intervals on the bottom of the sliding plate 62. The limiting end of the limiting module 5 is inserted into one of the limiting holes 63. An adjustment module 64 is fixedly installed on one rear side of the sliding plate 62. The printhead body 4 is installed on the outside of the adjustment module 64. During application, this device, through the installation base 1, hanging column 2, base 3, track mounting assembly 6, and limiting module 5, enables efficient operation and convenient adjustment of the printhead body 4. In use, the base 3 can rotate relative to the installation base 1 via the hanging column 2, causing the outer ring-shaped track mounting assembly 6 to rotate synchronously, thereby switching the printhead body 4 on different track mounting assemblies 6 to meet different printing needs. The sliding plate 62 inside the track mounting assembly 6... 2. The printhead body 4 can slide along the side rail 61 to adjust its position. At the same time, the top limiting end of the limiting module 5 will insert into the limiting hole 63 at the bottom of the slide plate 62 to fix the position of the slide plate 62 and prevent the slide plate 62 from sliding during printing and affecting the printing accuracy. When it is necessary to adjust the position of the printhead body 4, the limiting module 5 can be released from limiting the slide plate 62, the slide plate 62 can be slid to the appropriate position, and then it can be fixed again by the limiting module 5. The printhead body 4 is installed on the outside of the adjustment module 64, which can further adapt to the printing angle and position requirements. This design makes the adjustment and replacement of the printhead body 4 more convenient. The printhead body 4 can be quickly switched or adjusted without complicated operations, which effectively improves the flexibility and efficiency of the printing process and solves the problems of inconvenient adjustment and cumbersome replacement of traditional printheads, and better adapts to the needs of different printing tasks.

[0027] Combination Figures 1-3 As shown, mounting holes 7 are arranged in a ring at equal intervals at the bottom of the mounting base 1. The mounting holes 7 are countersunk holes. A pre-reserved groove 8 for connecting the print head is provided on the front side of the mounting base 1. The limiting module 5 includes a rail frame 51, which is fixedly installed on the bottom of the base 3. A limiting spring 52 is fixedly connected inside the rail frame 51. A movable block 53 is fixedly installed at the lower end of the limiting spring 52. A side limiting plate 54 is fixedly installed in a ring at equal intervals on the outer side of the movable block 53. A locking pin 55 is fixedly connected to the top outer end of the side limiting plate 54. The end of the locking pin 55 is inserted into the inside of a limiting hole 63. A connecting shaft 56 is fixedly connected to the bottom of the movable block 53. A base plate 57 is fixedly connected to the bottom of the connecting shaft 56 through the rail frame 51. A detachable pull-out half ring 58 is fixedly connected to the bottom of the base plate 57. The overall cross-sectional shape of the sliding plate 62 is cross-shaped. The cross-sectional shape of the internal cavity of the side rail 61 is also cross-shaped. The corners of the outer surface of the mounting base 1 are all rounded.

[0028] The technical solution described in the above-described embodiments of this application, during the application of this device, is achieved by setting a mounting base 1 with a countersunk mounting hole 7 and a reserved groove 8 for connecting the print head, including a rail frame 51, a limiting spring 52, a movable block 53, a side limiting plate 54, a locking pin 55, a connecting shaft 56, a base plate 57, and a limiting module 5 with a detachable and pull-out half-ring 58, as well as a cross-shaped sliding plate 62 and a side rail 61. This allows for stable installation, convenient limit adjustment, and safe operation during use. During installation, the countersunk mounting hole 7 at the bottom of the mounting base 1 can securely fix the device, preventing bolts from protruding and affecting surrounding components. The reserved groove on the front side facilitates the connection of related lines or pipes of the print head body 4. When adjusting the position of the print head body 4, pulling the detachable and pull-out half-ring 58 causes the movable block 53 to move down through the connecting shaft 56, compressing the limiting spring in the rail frame 51. Spring 52, and at the same time, the side limiting plate 54 moves down with the movable block 53, causing the locking pin 55 to disengage from the limiting hole 63 at the bottom of the slide plate 62. At this time, the slide plate 62 with a cross-shaped cross section can be slid along the cross-shaped side rail 61. After adjusting to the appropriate position, the half ring is released, the limiting spring 52 resets and pushes the movable block 53 up. The side limiting plate 54 drives the locking pin 55 to re-insert into the limiting hole 63 to complete the fixation. In addition, the rounded corners on the outer surface of the mounting base 1 can reduce the risk of bumps during operation. This design makes the device installation more stable and the print head position adjustment more convenient. Limit release and fixation can be completed without complicated tools. The cross-shaped structure can also ensure that the slide plate 62 does not deviate when sliding. The rounded corners improve the safety of operation and effectively solve the problems of inconvenient installation, complicated adjustment and operation safety hazards of traditional structures, and better adapt to various needs in the printing process.

[0029] Example 2

[0030] Combination Figures 2-4 As shown, the adjustment module 64 includes a side plate 641, which is fixedly installed on the rear side of the slide plate 62. An adjustment plate 642 is rotatably connected to the outer side of the side plate 641, and a fixing block 643 is fixedly connected to the outer side of the adjustment plate 642. The print head body 4 is installed on the outer side of the fixing block 643 by bolts. A limit screw 644 is threadedly connected to the outer side of the side plate 641. The end of the limit screw 644 passes through the side plate 641. The outer side of the side plate 641 has locking holes 645 arranged in a ring at equal intervals. The end of the limit screw 644 is inserted into the inner side of the locking hole 645. The limit screw 644 is a hand-tightening screw.

[0031] In the above-described embodiments of this application, the device, during its application, utilizes an adjustment module 64 comprising a side plate 641, an adjustment plate 642, a fixing block 643, a hand-tightened limiting screw 644, and annularly arranged locking holes 645. This allows for flexible adjustment and stable fixing of the printhead body 4 during use. When installing the printhead body 4, it is bolted to the outside of the fixing block 643. When angle adjustment is required, the hand-tightened limiting screw 644 is loosened, causing its end to disengage from the locking hole 645 on the outside of the side plate 641. At this time, the adjustment plate 642 can rotate around the side plate 641, thereby driving the fixing block 642 to rotate. Block 643 and printhead body 4 rotate synchronously to a suitable angle, and then the limiting screw 644 is tightened so that its end is reinserted into the corresponding position of the locking hole 645. This restricts the rotation of the adjusting disc 642 and fixes the angle of the printhead body 4. This design does not require additional tools and can complete the angle adjustment and fixation by hand. It is convenient to operate and the adjustment accuracy is guaranteed. It can quickly adapt to the needs of different printing scenarios for the printhead angle and effectively solves the problems of inconvenient printhead angle adjustment and unstable fixation in traditional structures, further improving the flexibility and reliability of the printing process.

[0032] The working principle and advantages of this utility model are as follows: During the application of this device, the entire structure is first fixed to the designated position on the 3D printer through the countersunk holes arranged in a ring at equal intervals on the bottom of the mounting base 1. The countersunk holes can prevent the heads of the mounting bolts from protruding, ensuring that the connection surface between the mounting base 1 and the printer is flat. At the same time, the pre-reserved groove 8 for the print head connection on the front side of the mounting base 1 provides space for the subsequent connection of the print head body 4 with the wiring and piping of the printer control system, reducing assembly obstacles. For different specifications of print head body 4, the angle is first adjusted and fixed on the adjustment module 64. The print head body 4 is then installed on the outside of the fixing block 643 of the adjustment module 64 by bolts. The fixing block 643 and the adjustment plate The adjustment plate 642 is fixedly connected and can rotate outside the side plate 641. After rotating the adjustment plate 642 to a suitable angle according to the printing requirements, the hand-tightened limiting screw 644 on the outside of the side plate 641 is turned so that its end passes through the side plate 641 and is inserted into the equally spaced ring-shaped locking holes 645 on the outside of the side plate 641. This restricts the rotation of the adjustment plate 642 to fix the angle of the print head body 4. This process does not require external tools and is easy to operate. It solves the problem that the print head angle cannot be flexibly adjusted and is difficult to adapt to different specifications of print heads in the existing multi-head quick change device. After the angle is fixed, the slide plate 62, the print head body 4, and the adjustment module 64 form an integrated assembly unit, which is ready for subsequent installation.

[0033] Next, the printhead body 4 and the track mounting assembly 6 are assembled. The slide plate 62 of the above-mentioned integrated assembly unit is slid into the side rail 61 of the track mounting assembly 6. The side rails 61 of the track mounting assembly 6 are arranged in a ring at equal intervals and fixed to the outside of the base 3. The cross-section of the internal cavity of the side rail 61 and the slide plate 62 is cross-shaped. This structure ensures that the slide plate 62 does not deviate when sliding and ensures the stability of the sliding direction. After the slide plate 62 slides to the appropriate position, it stops. At this time, the limiting module 5 at the bottom of the base 3 starts to work. The rail frame 51 of the limiting module 5 is fixed to the bottom of the base 3, and the limiting spring 52 inside it is in a naturally extended state. The movable block 53 at the bottom is supported and held at the top position. The side limiting plate 54 on the outside of the movable block 53 is positioned synchronously with the movable block 53. The locking pin 55 at the top outer end of the side limiting plate 54 is inserted into the limiting holes 63 at equal intervals and arranged linearly at the bottom of the slide plate 62. The sliding of the slide plate 62 is restricted by the cooperation between the locking pin 55 and the limiting holes 63, so as to achieve relative fixation between the slide plate 62 and the side rail 61, thereby completing the assembly and positioning of the print head body 4. The entire assembly process does not require complicated operations. Compared with the traditional single print head fixed by threaded connection, the installation steps are greatly simplified, laying a convenient foundation for subsequent print head replacement.

[0034] Next is the adjustment and quick replacement of the printhead's lateral position during the printing process. When the lateral position of the printhead body 4 needs to be adjusted, the bottom plate 57 is moved down by the pull-out half-ring 58 of the pull-out limiting module 5. The downward movement of the bottom plate 57 causes the connecting shaft 56 to pull down the movable block 53. The downward movement of the movable block 53 causes the side limiting plate 54 on its outer side to move down. The downward movement of the side limiting plate 54 causes the locking pin 55 at the top outer end to disengage from the limiting hole 63 at the bottom of the slide plate 62. Through the locking pin 55 and the limiting... The holes 63 separate, releasing the restriction on the slide plate 62. Then, push the slide plate 62 to the target position along the length of the side rail 61, and release the disassembly and assembly pull-out half ring 58. At this time, the limit spring 52 inside the limit module 5 resets, causing the movable block 53 to move upward. The upward movement of the movable block 53 causes the side limit plate 54 to move upward synchronously. The upward movement of the side limit plate 54 causes the locking pin 55 to be inserted into the corresponding limit hole 63 at the bottom of the slide plate 62, assisting in completing the locking and limiting, and realizing the connection between the slide plate 62 and the side rail 61. The re-fixing of the printhead body 4 allows for flexible adjustment of its lateral position, solving the problem of the inability to adjust the lateral position of the printhead in existing multi-head quick-change devices. When it is necessary to replace the printhead body 4 of different specifications, the same steps are followed. By pulling and disassembling the half-ring 58, the locking pin 55 is disengaged from the limiting hole 63. The slide plate 62 equipped with the old printhead body 4 is pulled out from the side rail 61, and then the slide plate 62 equipped with the new specification printhead body 4 is slid into the side rail 61. The half-ring 58 is released to allow the limiting spring 52 to reset and drive the locking pin 55 to insert into the limiting hole 63 to complete the fixation. The entire replacement process does not require stopping the machine and using a wrench. Compared with the traditional method of stopping the machine and tightening the threads when replacing a single printhead, the replacement time is greatly shortened and the replacement efficiency is improved. At the same time, the cross-shaped sliding fit structure between the slide plate 62 and the side rail 61 reduces the sliding resistance and makes the slide plate 62 pull out smoothly, solving the problem that the printhead is difficult to pull out and remove quickly in existing devices.

[0035] Finally, there's the multi-printhead switching and secondary printhead angle adjustment. The base 3 of this device is rotatably connected to the bottom of the mounting base 1 via the hanging column 2. When it's necessary to use the printhead body 4 on different positions of the track mounting assembly 6, simply rotate the base 3 to drive multiple track mounting assemblies 6 and printhead bodies 4 to rotate synchronously, rotating the track mounting assembly 6 containing the target printhead body 4 to the printing working position. This satisfies the need for alternating use of multiple printheads and solves the problem that traditional single-printhead systems cannot simultaneously equip multiple printheads and switching is inconvenient. If a secondary angle adjustment is needed after replacing the printhead body 4 or during printing... To adjust the print head angle, simply loosen the limiting screw 644 of the adjustment module 64, allowing the end of the screw to disengage from the locking hole 645 of the side plate 641. Then, rotate the adjustment plate 642 to adjust the print head body 4 to the appropriate angle, and finally retighten the limiting screw 644. This flexible and convenient operation further adapts to the print head angle requirements in different printing scenarios. At the same time, the rail frame 51 of the limiting module 5 provides stable installation support for components such as the limiting spring 52 and the movable block 53, ensuring the reliable implementation of the limiting function and preventing print head fixation failure due to loose components, thus ensuring the stability of the entire printing process.

[0036] The scope of protection of this application does not involve improvements to the electronic components of the device or equipment. Therefore, the working principles of each electronic component are not described in detail here. The electronic components in this application are all conventional electronic components used in the prior art. They are all conventional technical means in the prior art, and the application of the prior art is very mature. Therefore, they will not be elaborated here.

[0037] Of course, there may be other implementations of this utility model. Based on this implementation, other implementations obtained by those skilled in the art without any creative effort are all within the scope of protection of this utility model.

Claims

1. A slide rail type quick-change structure for printheads, characterized in that, Includes a mounting base (1), a hanging column (2) is fixedly installed at the bottom of the mounting base (1), a base (3) is rotatably connected to the bottom of the hanging column (2), a track mounting group (6) is fixedly installed in a ring at equal intervals on the outer side of the base (3), a print head body (4) is installed on one side of the track mounting group (6), a limit module (5) is fixedly installed at the bottom of the base (3), and the top limit end of the limit module (5) is engaged with the track mounting group (6); The track mounting assembly (6) includes side rails (61), which are arranged in a ring at equal intervals and fixedly installed on the outside of the base (3). A sliding plate (62) is slidably connected inside the side rails (61). Limiting holes (63) are opened at equal intervals in a linear arrangement at the bottom of the sliding plate (62). The limiting end of the limiting module (5) is inserted into the inside of a limiting hole (63). An adjustment module (64) is fixedly installed on the rear end of one side of the sliding plate (62). The print head body (4) is installed on the outside of the adjustment module (64).

2. The slide rail type printhead quick-change structure according to claim 1, characterized in that, The mounting base (1) has mounting holes (7) arranged in a ring at equal intervals at the bottom. The mounting holes (7) are countersunk holes. The front side of the mounting base (1) has a reserved groove (8) for connecting the print head.

3. The slide rail type printhead quick-change structure according to claim 1, characterized in that, The limiting module (5) includes a rail frame (51), which is fixedly installed at the bottom of the base (3). A limiting spring (52) is fixedly connected inside the rail frame (51). A movable block (53) is fixedly installed at the lower end of the limiting spring (52). Side limiting plates (54) are fixedly installed on the outer side of the movable block (53) in a ring at equal intervals. A locking pin (55) is fixedly connected to the top outer end of the side limiting plate (54). The end of the locking pin (55) is inserted into the inside of a limiting hole (63).

4. The slide rail type printhead quick-change structure according to claim 3, characterized in that, The bottom of the movable block (53) is fixedly connected to a connecting shaft (56), the bottom of the connecting shaft (56) is fixedly connected to a base plate (57) through the rail frame (51), and the bottom of the base plate (57) is fixedly connected to a detachable pull-out half ring (58).

5. The slide rail type printhead quick-change structure according to claim 2, characterized in that, The overall cross-sectional shape of the slide plate (62) is cross-shaped, the cross-sectional shape of the internal cavity of the side rail (61) is also cross-shaped, and the outer surface corners of the mounting base (1) are all rounded.

6. The slide rail type printhead quick-change structure according to claim 1, characterized in that, The adjustment module (64) includes a side plate (641), which is fixedly installed on the rear side of the slide plate (62). An adjustment plate (642) is rotatably connected to the outside of the side plate (641), and a fixing block (643) is fixedly connected to the outside of the adjustment plate (642). The print head body (4) is installed on the outside of the fixing block (643) by bolts. A limit screw (644) is threadedly connected to the outside of the side plate (641), and the end of the limit screw (644) passes through the side plate (641).

7. The slide rail type printhead quick-change structure according to claim 6, characterized in that, The side plate (641) has locking holes (645) arranged in a ring at equal intervals on its outer side. The end of the limiting screw (644) is inserted into the inner side of the locking hole (645). The limiting screw (644) is a hand-tightening screw.

Images