Large flat UV printer and cross beam anti-locking mechanism thereof

By designing a crossbeam anti-jamming mechanism for a large flatbed UV printer, the problem of crossbeam jamming caused by frame deformation or processing errors is solved, ensuring normal printer operation and reducing operating costs.

CN223631261UActive Publication Date: 2025-12-05GUANGDONG TAIMES INTELLIGENT TECH CO LTD
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Patent Information

Application Number
CN202520093812.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-01-15
Publication Date
2025-12-05
Estimated Expiration
2035-01-15

AI Technical Summary

Technical Problem

Large UV flatbed printers are prone to jamming of the crossbeams during transportation due to frame deformation or processing errors, which affects normal use.

Method used

A mechanism to prevent jamming of a crossbeam is designed, including a crossbeam, a mounting base, and a Y-axis mounting plate. The Y-axis mounting plate is provided with a dovetail slider for sliding engagement with a dovetail slide rail of the frame. An adjusting seat is connected to the lower side of the mounting base. An adjusting slider is slidably mounted on the lower side of the adjusting seat in the direction perpendicular to the crossbeam's movement, and the adjusting slider and the adjusting seat are anti-detached. The Y-axis mounting plate is fixed to the lower side of the adjusting slider, and the travel of the adjusting slider is not less than the deformation of the frame in the direction perpendicular to the crossbeam's movement.

Benefits of technology

When the frame is deformed or there are large machining errors, the Y-axis mounting plate can adapt to the frame deformation, prevent the crossbeam from jamming, and ensure that the printer works normally.

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Abstract

The utility model relates to the technical field of UV flat-plate printers, in particular to a large-scale flat-plate UV printer and a cross beam anti-locking mechanism of the large-scale flat-plate UV printer. The cross beam anti-locking mechanism for the large flat UV printer comprises a cross beam, a mounting base and a Y-axis hanging plate, the mounting base is fixed to the bottom of the cross beam, a dovetail sliding block used for being in sliding fit with a dovetail sliding rail on a rack is arranged on the Y-axis hanging plate, and the lower side of the mounting base is connected with an adjusting base; an adjusting sliding block is assembled on the lower side of the adjusting seat in a sliding mode in the moving direction perpendicular to the cross beam, and the adjusting sliding block is matched with the adjusting seat in an anti-disengaging mode. The Y-axis hanging plate is fixed to the lower side of the adjusting sliding block, and the moving stroke of the adjusting sliding block is not smaller than the deformation amount of the machine frame in the moving direction perpendicular to the cross beam. According to the utility model, the cross beam can stably move within the deformation range of the rack, and the jamming phenomenon is avoided, so that the normal use of the UV flatbed printer is ensured.
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Description

TECHNICAL FIELD

[0001] The utility model relates to UV flatbed printer technical field, concretely relates to a large -scale flat plate UV printer and crossbeam anti -jam mechanism. BACKGROUND

[0002] UV flatbed printer is a kind of digital printing equipment using ultraviolet curing inkjet technology, also be called UV inkjet printer or flat plate UV machine, can print image or text directly to the surface of various flat plate materials.

[0003] UV flatbed printer mainly includes rack, work platform located on the rack, X-axis drive mechanism, Y-axis drive mechanism, crossbeam and the printing module installed on the crossbeam, crossbeam extends along X-axis direction, printing module can move on the crossbeam under the action of X-axis drive mechanism;Crossbeam is moved and assembled on the rack by Y-axis hanging plate on it, and can move in Y-axis direction under the action of Y-axis drive mechanism. Two Y-axis hanging plates are connected below the crossbeam by mounting seat, the Y-axis hanging plate has slider, and the both sides of the rack are provided with dovetail slide rail in sliding cooperation with the slider, and the slider is provided with dovetail slide groove with matching cross section with the cross section of the slide rail.

[0004] Some large UV flatbed printers need to be put into containers for sale overseas, so the rack and the crossbeam need to be split at this time. During transportation, the ship may roll, which may cause the rack to deform, that is, the slide rails on both sides of the rack are not parallel at this time;When the rack is machined, machining errors may also cause the slide rails on both sides of the rack to be not parallel. Usually, a certain gap is reserved between the dovetail slide groove on the Y-axis hanging plate and the dovetail slide rail on the rack. When the deformation of the rack in the X-axis direction does not exceed the above gap, the crossbeam can still move normally on the rack. Once the deformation of the rack in the X-axis direction exceeds the above gap, the crossbeam will be jammed when sliding on the rack, affecting the use of the UV flatbed printer. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a large flat plate UV printer and crossbeam anti-jamming mechanism to solve the technical problem that the crossbeam is prone to jamming during movement due to rack deformation or rack manufacturing errors in the prior art.

[0006] To solve the above problems, the crossbeam anti-jamming mechanism for a large flat plate UV printer provided by the utility model adopts the following technical scheme:

[0007] The application discloses a crossbeam anti-locking mechanism for a large flat plate UV printer, which comprises a crossbeam, a mounting seat and a Y-axis hanging plate, the mounting seat is fixed at the bottom of the crossbeam, the Y-axis hanging plate is provided with swallow-tail sliding blocks for sliding cooperation with swallow-tail sliding rails on a rack, the lower side of the mounting seat is connected with an adjusting seat, the lower side of the adjusting seat is slidingly assembled with an adjusting sliding block in the direction perpendicular to the moving direction of the crossbeam, and the adjusting sliding block is in anti-detaching cooperation with the adjusting seat; the Y-axis hanging plate is fixed at the lower side of the adjusting sliding block, and the moving stroke of the adjusting sliding block is not less than the deformation amount of the rack in the direction perpendicular to the moving direction of the crossbeam.

[0008] Further, one of the adjusting seat and the adjusting sliding block is provided with an adjusting sliding groove, and the other is provided with a protrusion in sliding cooperation with the adjusting sliding groove; the adjusting sliding groove and the protrusion extend along the length direction of the crossbeam, and at least one end of the adjusting sliding groove penetrates through the adjusting seat or the adjusting sliding block; the adjusting sliding groove is provided with two first stop surfaces, and the protrusion is provided with two second stop surfaces in sliding contact with the first stop surfaces respectively and in stop cooperation in the up-down direction.

[0009] Further, the first stop surfaces and the second stop surfaces are both inclined surfaces, the adjusting sliding groove is a swallow-tail groove, and the protrusion is a swallow-tail block.

[0010] Further, the adjusting seat and the mounting seat are detachably connected, and the adjusting sliding block and the Y-axis hanging plate are detachably connected.

[0011] Further, the mounting seat is provided with a plurality of mounting holes, the adjusting seat is provided with a first counterbore corresponding to the mounting holes one by one, and the adjusting sliding block is provided with a first avoiding long hole corresponding to the first counterbore one by one; a plurality of threaded fixing holes are arranged outside the first avoiding long hole on the adjusting sliding block, the adjusting sliding block is further provided with a second avoiding long hole corresponding to the first avoiding long hole one by one, and the Y-axis hanging plate is provided with a counterbore corresponding to the threaded fixing holes coaxially one by one.

[0012] Further, the Y-axis hanging plate comprises a horizontal plate body and an L-shaped vertical plate body connected at the central position of the horizontal plate body, the swallow-tail sliding blocks are arranged in multiple rows in the up-down direction on the L-shaped vertical plate body, and multiple swallow-tail sliding blocks are arranged in each row in the moving direction of the crossbeam.

[0013] Further, a metal grating reader is mounted on the L-shaped vertical plate body and located between two of the swallow-tail sliding blocks in the uppermost row.

[0014] Further, limit sensors are arranged at the end portions of the L-shaped vertical plate body.

[0015] Further, L-shaped reinforcing blocks are detachably connected to the connection positions of the horizontal plate body and the L-shaped vertical plate body.

[0016] The beneficial effect of the cross beam anti-locking mechanism for the large flat plate UV printer is that when the Y-axis hanging plate moves to the rack deformation position or the position with large machining error, the Y-axis hanging plate can slide in the direction perpendicular to the moving direction of the cross beam, that is, the Y-axis hanging plate can move in the extension direction of the cross beam, at this time, the dovetail sliding block on the Y-axis hanging plate can adapt to the deformation of the dovetail sliding rail on the rack, so that the dovetail sliding groove on the dovetail sliding block and the dovetail sliding rail on the rack always have a gap to prevent the cross beam from being locked, or the dovetail sliding groove on the dovetail sliding block and the dovetail sliding rail on the rack can always be attached to realize sliding. The utility model can ensure that the cross beam will not be locked under different conditions of the rack, and ensure the normal work of the large flat plate UV printer.

[0017] The technical scheme of the large flat plate UV printer is:

[0018] The large flat plate UV printer comprises a rack and a cross beam anti-locking mechanism, the cross beam anti-locking mechanism comprises a cross beam, a mounting seat and a Y-axis hanging plate, the Y-axis hanging plate is assembled on the mounting seat, the Y-axis hanging plate is provided with a dovetail sliding block used for sliding cooperation with a dovetail sliding rail on the rack, the cross beam is provided with an adjusting seat at the position corresponding to the mounting seat, an adjusting sliding block is slidably assembled on the lower side of the adjusting seat in the direction perpendicular to the moving direction of the cross beam, and the adjusting sliding block is in anti-disengagement cooperation with the adjusting seat; the Y-axis hanging plate is fixed on the lower side of the adjusting sliding block, and the moving stroke of the adjusting sliding block is not less than the deformation amount of the rack in the direction perpendicular to the moving direction of the cross beam.

[0019] Further, one of the adjusting seat and the adjusting sliding block is provided with an adjusting sliding groove, and the other is provided with a protrusion in sliding cooperation with the adjusting sliding groove, the adjusting sliding groove and the protrusion extend along the length direction of the cross beam, and at least one end of the adjusting sliding groove penetrates the adjusting seat or the adjusting sliding block; the adjusting sliding groove has two first stop surfaces, and the protrusion has two second stop surfaces in sliding contact with the first stop surfaces respectively and in upward and downward direction stop cooperation.

[0020] Further, the first stop surface and the second stop surface are both inclined surfaces, the adjusting sliding groove is a dovetail groove, and the protrusion is a dovetail block.

[0021] Further, the adjusting seat is detachably connected with the mounting seat, and the adjusting sliding block is detachably connected with the Y-axis hanging plate.

[0022] Further, the mounting seat is provided with a plurality of mounting holes, the adjusting seat is provided with a first counterbore corresponding to the mounting holes one by one, and the adjusting sliding block is provided with a first avoiding long hole corresponding to the first counterbore one by one; a plurality of threaded fixing holes are arranged on the outer side of the first avoiding long hole on the adjusting sliding block, the Y-axis hanging plate is provided with a second avoiding long hole corresponding to the first avoiding long hole one by one, and the Y-axis hanging plate is further provided with a second counterbore coaxially corresponding to the threaded fixing hole one by one.

[0023] Further, the Y-axis hanging plate comprises a horizontal plate body and an L-shaped vertical plate body connected to the center of the horizontal plate body, the second avoiding long hole and the second counterbore are arranged on the horizontal plate body, and the dovetail sliders are arranged in multiple rows in the up-down direction on the L-shaped vertical plate body, and multiple are arranged in each row in the moving direction of the cross beam.

[0024] Further, a metal grating reader is mounted on the L-shaped vertical plate body, and the metal grating reader is located between two of the uppermost row of dovetail sliders.

[0025] Further, the end of the L-shaped vertical plate body is provided with a limit inductor.

[0026] Further, L-shaped reinforcing blocks are detachably connected to the connection positions of the horizontal plate body and the L-shaped vertical plate body.

[0027] The large flat plate UV printer has the advantages that: the horizontal beam anti-locking mechanism is provided, so that the large flat plate UV printer can still meet the normal printing requirements when the rack is deformed or the machining error is large, and the horizontal beam anti-locking mechanism does not need to be re-manufactured, thereby reducing the use cost. BRIEF DESCRIPTION OF DRAWINGS

[0028] The above and other objects, features and advantages of the exemplary embodiments of the present application will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which:

[0029] Figure 1 It is a first view structural schematic view of the horizontal beam anti-locking mechanism for the large flat plate UV printer of the present application;

[0030] Figure 2 It is a second view structural schematic view of the horizontal beam anti-locking mechanism for the large flat plate UV printer of the present application;

[0031] Figure 3 It is a first view structural schematic view of the horizontal beam anti-locking mechanism for the large flat plate UV printer of the present application; Figure 1 It is an enlarged schematic view of the middle A;

[0032] Figure 4 It is a structural schematic view of the adjusting seat;

[0033] Figure 5 It is a first view structural schematic view of the adjusting sliding block;

[0034] Figure 6 It is a second view structural schematic view of the adjusting sliding block;

[0035] Figure 7 It is a structural schematic view of the Y-axis hanging plate;

[0036] Figure 8 For Figure 1 a vertical cross-sectional view.

[0037] Reference signs:

[0038] 1, beam; 2, mounting seat; 3, Y-axis hanging plate; 4, dovetail slider; 5, adjusting seat; 6, adjusting slider; 7, adjusting sliding groove; 8, protrusion; 9, first stop surface; 10, second stop surface; 11, cross plate body; 12, L-shaped vertical plate body; 13, L-shaped reinforcing block; 14, metal grating reader; 15, limit sensor; 16, first counterbore; 17, first avoidance long hole; 18, second avoidance long hole; 19, threaded fixing hole; 20, second counterbore; 21, third counterbore; 22, fourth counterbore; 23, mounting hole. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It should be known by those skilled in the art that the embodiments described below are part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0040] The principles and spirits of the present application will be explained in detail below with reference to several representative embodiments of the present application.

[0041] Embodiment 1 of the large flat plate UV printer beam anti-locking mechanism provided by the present application:

[0042] As Figure 1 and Figure 2 shown, the large flat plate UV printer beam anti-locking mechanism comprises a beam 1, a mounting seat 2, an adjusting seat 5, an adjusting slider 6 and a Y-axis hanging plate 3. Among them, the mounting seat 2 is connected at the bottom of the beam 1, the adjusting seat 5 is connected at the bottom of the mounting seat 2, the adjusting slider 6 is slidingly assembled with the adjusting seat 5, and the Y-axis hanging plate 3 is connected at the bottom of the adjusting slider 6.

[0043] Specifically, as Figure 8 shown, the mounting seat 2 is a rectangular plate, and a plurality of mounting holes 23 for connecting with the beam 1 are arranged on the mounting seat 2, and the mounting holes 23 are through holes.

[0044] As Figure 4 shown, the adjusting seat 5 is provided with an adjusting sliding groove 7, as Figure 3 , Figure 5 and Figure 6As shown, the adjusting slider 6 is provided with a protrusion 8 in sliding fit with the adjusting slot 7, and the moving stroke of the adjusting slider 6 is not less than the deformation of the dovetail slide rail in the direction perpendicular to the moving direction of the crossbeam 1. The adjusting slot 7 and the protrusion 8 both extend along the length direction of the crossbeam 1, the adjusting slot 7 penetrates the adjusting seat 5 in the length direction of the crossbeam 1, and the two ends of the protrusion 8 extend to the two end faces of the adjusting slider 6 respectively. In the embodiment, the adjusting slot 7 is a dovetail slot, and the protrusion 8 is a dovetail block, both of which are provided with two first stop surfaces 9 and two second stop surfaces 10 respectively. After the protrusion 8 is assembled in the adjusting slot 7, the first stop surface 9 and the corresponding second stop surface 10 are in sliding contact in the length direction of the crossbeam 1, and are in stop fit in the up-down direction, thereby preventing the adjusting slider 6 from being separated from the adjusting seat 5 in the up-down direction.

[0045] As shown in Figure 4 , the adjusting seat 5 is provided with a plurality of first counterbores 16 corresponding to the mounting holes 23, the adjusting slider 6 is provided with a plurality of first long relief holes 17 corresponding to the first counterbores 16, and the adjusting slider 6 is provided with a plurality of threaded fixing holes 19 outside the first long relief holes 17.

[0046] As shown in Figure 7 , the Y-axis hanging plate 3 includes a horizontal plate body 11, an L-shaped vertical plate body 12 connected to the center of the horizontal plate body 11, and L-shaped reinforcing blocks 13 arranged on both sides of the connection position of the horizontal plate body 11 and the L-shaped vertical plate body 12. The horizontal plate body 11 is provided with a plurality of second long relief holes 18 corresponding to the first long relief holes 17, a plurality of second counterbores 20 corresponding to the threaded fixing holes 19, and a plurality of fixing holes. Figure 1 and Figure 2 As shown in , the L-shaped vertical plate body 12 is provided with two rows of dovetail sliders 4 arranged in an up-down interval, each row including three dovetail sliders 4 arranged in an interval in the moving direction of the crossbeam 1, and the dovetail sliders 4 are in sliding fit with the dovetail slide rail of the large flat plate UV printer. The L-shaped vertical plate body 12 is provided with a metal grating reader 14, and the metal grating reader 14 is located between two of the uppermost row of dovetail sliders 4. The end of the L-shaped vertical plate body 12 close to the metal grating reader 14 is further provided with a limit sensor 15. Two L-shaped reinforcing blocks 13 are connected to both sides of the L-shaped vertical plate body 12 and arranged in an interval in the moving direction of the crossbeam 1, and the L-shaped reinforcing blocks 13 are provided with a plurality of third counterbores 21 corresponding to the fixing holes and a plurality of fourth counterbores 22 for connecting with the L-shaped vertical plate body 12.

[0047] Figure 1 In actual assembly, as shown in Figure 8As shown, the L-shaped fixing plate is first connected with the horizontal plate body 11 and the L-shaped vertical plate body 12, specifically by screwing a bolt through the third counterbore 21 on the L-shaped fixing plate and screwing it in the fixing hole on the horizontal plate body 11 to realize the connection of the L-shaped fixing plate with the horizontal plate body 11, and then screwing a bolt through the fourth counterbore 22 on the L-shaped fixing plate and screwing it on the L-shaped vertical plate body 12 to realize the connection of the L-shaped fixing plate with the L-shaped vertical plate body 12, thereby completing the assembly of the whole Y-axis hanging plate 3. A bolt is screwed in the second counterbore 20 on the horizontal plate body 11 and screwed in the threaded fixing hole 19 on the adjusting slide 6 to complete the assembly of the whole Y-axis hanging plate 3 with the adjusting slide 6. A bolt is sequentially screwed from bottom to top through the second avoiding long hole 18 of the horizontal plate body 11, the first avoiding long hole 17 of the adjusting slide 6 and the first counterbore 16 of the adjusting seat 5, and screwed in the mounting hole 23 on the mounting seat 2 and the corresponding connecting hole on the cross beam 1 to realize the assembly between the adjusting seat 5, the mounting seat 2 and the cross beam 1. The depth of the counterbore on the adjusting seat 5 is greater than the thickness of the head of the bolt to avoid interference between the adjusting slide 6 and the bolt in the first counterbore 16 when the adjusting slide 6 moves. Since each component is a bolt component, the adjusting seat 5 and the mounting seat 2 are detachably assembled, and the adjusting slide 6 and the Y-axis hanging plate 3 are also detachably assembled. Of course, in other embodiments, if there is no requirement for the occupied space during transportation, the adjusting seat 5 and the mounting seat 2 can also be fixedly connected, such as riveting, and the adjusting slide 6 and the Y-axis hanging plate 3 can also be fixedly connected, such as riveting.

[0048] The specific anti-locking principle of the utility model is as follows: when the Y-axis hanging plate 3 moves to the deformation position of the dovetail slide rail on the rack or the position with large machining error, the Y-axis hanging plate 3 can slide in the direction perpendicular to the moving direction of the cross beam 1, that is, the Y-axis hanging plate 3 can move in the extension direction of the cross beam 1, at this time, the dovetail slide block 4 on the Y-axis hanging plate 3 can adapt to the deformation of the dovetail slide rail on the rack, so that the dovetail slide groove on the dovetail slide block 4 and the dovetail slide rail on the rack always have a gap to prevent the cross beam 1 from being locked, or the dovetail slide groove on the dovetail slide block 4 and the dovetail slide rail on the rack can always be in close contact to realize sliding.

[0049] The utility model can ensure that the cross beam 1 will not be locked under different conditions of the rack, and ensure the normal work of the large flat plate UV printer.

[0050] The embodiment 2 of the cross beam anti-locking mechanism for large flat plate UV printer provided by the utility model is as follows:

[0051] The difference between the embodiment 1 and the embodiment 2 is mainly as follows:

[0052] In the embodiment 1, the first stop surface on the adjusting slide groove and the second stop surface on the protrusion are both inclined surfaces.

[0053] In the embodiment, the first stop surface on the adjusting sliding groove and the second stop surface on the protrusion are both horizontal surfaces, at this time the adjusting sliding groove adopts a T-shaped groove, and the adjusting sliding block adopts a T-shaped block matched with the T-shaped groove.

[0054] The embodiment of the large flat plate UV printer provided by the utility model:

[0055] The large flat plate UV printer comprises a rack and a beam anti-lock mechanism, the structure of the beam anti-lock mechanism is the same as that in each embodiment of the large flat plate UV printer beam anti-lock mechanism, and will not be described in detail here.

[0056] According to the above description of the present specification, those skilled in the art can also understand that the terms used, such as "upper", "lower", "left", "right", "width", "horizontal", "top", "bottom", "inner", "outer" and the like, are indicative of the orientation or positional relationship based on the orientation or positional relationship shown in the drawings of the present specification, and are only for the purpose of facilitating the description of the scheme of the present utility model and simplifying the description, and do not explicitly or implicitly indicate or suggest that the devices or elements involved must have the specific orientation, be constructed and operated in a specific orientation, therefore the above orientation or positional relationship terms cannot be understood or interpreted as a limitation on the scheme of the present utility model.

[0057] In addition, in the description of the present specification, the meaning of "a plurality of" is at least two, such as two, three or more, etc., unless otherwise explicitly and specifically limited.

[0058] The above is only a preferred embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A crossbeam anti-stuck mechanism for a large flat plate UV printer, comprising a crossbeam, a mounting seat and a Y-axis hanging plate, the mounting seat is fixed at the bottom of the crossbeam, and the Y-axis hanging plate is provided with a dovetail sliding block for sliding fit with a dovetail sliding rail on a rack, characterized in that, The lower side of the mounting base is connected with an adjusting base, the lower side of the adjusting base is slidingly assembled with an adjusting sliding block in the direction perpendicular to the moving direction of the cross beam, the adjusting sliding block is in anti-disengagement fit with the adjusting base; the Y-axis hanging plate is fixed on the lower side of the adjusting sliding block, and the moving stroke of the adjusting sliding block is not less than the deformation amount of the dovetail sliding rail in the direction perpendicular to the moving direction of the cross beam.

2. The beam anti-locking mechanism for a large flatbed UV printer according to claim 1, characterized in that, One of the adjusting base and the adjusting sliding block is provided with an adjusting sliding groove, and the other is provided with a protrusion in sliding fit with the adjusting sliding groove, the adjusting sliding groove and the protrusion both extend along the length direction of the cross beam, and at least one end of the adjusting sliding groove penetrates through the adjusting base or the adjusting sliding block; the adjusting sliding groove has two first stop surfaces, and the protrusion has two second stop surfaces in sliding contact with the first stop surfaces respectively and in upward and downward direction stop fit.

3. The beam anti-locking mechanism for a large flatbed UV printer according to claim 2, characterized in that, The first stop surface and the second stop surface are both inclined surfaces, the adjusting sliding groove is a dovetail groove, and the protrusion is a dovetail block.

4. The anti-stuck mechanism of the crossbeam of a large flatbed UV printer according to any one of claims 1-3, characterized in that, The adjusting base is detachably connected with the mounting base, and the adjusting sliding block is detachably connected with the Y-axis hanging plate.

5. The beam anti-locking mechanism for a large flatbed UV printer according to claim 4, characterized in that, The mounting base is provided with a plurality of mounting holes, the adjusting base is provided with a first counterbore corresponding to the mounting holes one by one, and the adjusting sliding block is provided with a first avoiding long hole corresponding to the first counterbore one by one; a plurality of threaded fixing holes are arranged on the adjusting sliding block outside the first avoiding long hole, the Y-axis hanging plate is provided with a second avoiding long hole corresponding to the first avoiding long hole one by one, and the Y-axis hanging plate is further provided with a second counterbore coaxially corresponding to the threaded fixing hole.

6. The beam anti-locking mechanism for a large flatbed UV printer according to claim 5, characterized in that, The Y-axis hanging plate comprises a horizontal plate body and an L-shaped vertical plate body connected at the central position of the horizontal plate body, the second avoiding long hole and the second counterbore are arranged on the horizontal plate body, and the dovetail sliding blocks are arranged in multiple rows in the upward and downward direction on the L-shaped vertical plate body, and multiple are arranged in each row in the moving direction of the cross beam.

7. The beam anti-locking mechanism for a large flatbed UV printer according to claim 6, characterized in that, A metal grating reader is mounted on the L-shaped vertical plate body and located between two of the uppermost row of the dovetail sliding blocks.

8. The beam anti-locking mechanism for a large flatbed UV printer according to claim 6, characterized in that, The end of the L-shaped vertical plate body is provided with a limit inductor.

9. The beam anti-stuck mechanism for a large flatbed UV printer according to claim 6, characterized in that, L-shaped reinforcing blocks are detachably connected on both sides of the connection position of the horizontal plate body and the L-shaped vertical plate body.

10. A large flatbed UV printer comprising a frame and a crossbeam anti-stuck mechanism, characterized in that, The cross beam anti-locking mechanism is the cross beam anti-locking mechanism of the large flat plate UV printer according to any one of claims 1-9.