CN218892372U

CN218892372U - Ampoule ink-jet printing mechanism

Info

Publication number: CN218892372U
Application number: CN202223094328.3U
Authority: CN
Inventors: 刘丙炎; 唐海洋; 刘诣; 范立功
Original assignee: Zhengzhou Shunyi Technology Co ltd
Current assignee: Zhengzhou Shunyi Technology Co ltd
Priority date: 2022-11-21
Filing date: 2022-11-21
Publication date: 2023-04-21
Anticipated expiration: 2032-11-21

Abstract

The utility model discloses an ampoule ink-jet printing mechanism, which relates to the technical field of pharmaceutical equipment and comprises a frame, wherein a liftable supporting platform is arranged on the frame, placing grooves for vertically placing ampoule bottles are arranged on the supporting platform side by side, ampoule bottle clamps for clamping two ends of the ampoule bottles are arranged on the frame corresponding to the supporting platform, a linear driving mechanism for driving the ampoule bottle clamps to open and close along the bottle axis direction of the ampoule bottles is also arranged on the frame, a rotary driving mechanism for driving the ampoule bottles to rotate is also arranged on the ampoule bottle clamps, an ink-jet printing mechanism is movably arranged on the frame corresponding to the position right above the placing grooves, single bottle clamping is carried out by utilizing the ampoule bottle clamps, the supporting platform is rotatable, and the ampoule bottle ink-jet printing mechanism is matched with the movably arranged ink-jet printing mechanism, so that the single bottle ink-jet printing processing operation is facilitated, and meanwhile, the horizontal ink-jet printing effect of the ampoule bottles is improved.

Description

Ampoule ink-jet printing mechanism

Technical Field

The utility model relates to the technical field of ampoule bottle production, in particular to an ampoule bottle ink-jet printing mechanism.

Background

The ampoule bottle is used as a packaging container widely applied to medicine packaging, the character information on the surface of the ampoule bottle comprises the name, capacity, production date, batch number and the like of medicines, the life safety of a user is related, and the printing of the information is required to be completed by an ampoule bottle printer. The ampoule bottle printer mainly comprises an ampoule bottle conveying mechanism and a printing mechanism, wherein the ampoule bottle conveying mechanism drives ampoule bottles to move, printing of bottle bodies is carried out through the printer, after printing is finished, the ampoule bottles are carried by a conveyor to automatically fall into a packing box, and therefore printing of the ampoule bottle bodies and packing of the bottle bodies are finished. Ampoule conveyer often adopts chain conveyor, and the ampoule drops from ampoule conveyer when ampoule conveyer carries to packing carton department, often needs to have the device to assist to guarantee that the ampoule can continue to laminate on the conveyer, until the ampoule rotates the packing carton department of conveyer lower extreme under the chain drive, the ampoule just can drop from the chain under the effect of gravity.

For example, in the patent with the application number of 201610386111.X and the patent name of high definition printer for small-volume injection ampoule bottles in pharmaceutical factories, a crescent guide plate matched with a printer chain is arranged at the tail end of the printer chain, and the crescent guide plate is matched with the printer chain to ensure that ampoule bottles cannot be separated from the printer chain, and is continuously driven by the printer chain until the lower end of the crescent guide plate is separated from the printer chain; in addition, in the horizontal printing process of the existing ampoule bottle, the ampoule bottle fixing part adopts a groove of a chain conveyor to fix the ampoule bottle, the ampoule bottle cannot rotate, meanwhile, the fixing position of the ampoule bottle is only supported at the bottom, the two ends of the ampoule bottle are not provided with supporting structure designs, and meanwhile, the existing ampoule bottle is mostly transferred in a roll printing mode, for example, the application number of the existing ampoule bottle is 202011150890.6, the patent name is a patent of an ampoule bottle lettering printer, and although the problem can be solved, the printing process of the ampoule bottle is not high enough in precision due to the fact that the ampoule bottle is supported by adopting a chain type structure, and the printing effect and the whole operation stability are affected; the bottle body can not rotate so that the transfer printing effect can be affected, so that a novel ampoule bottle ink-jet printing machine needs to be designed, and the problem is solved.

Disclosure of Invention

In order to solve the problems in the background art, the utility model discloses an ampoule bottle ink-jet printing mechanism, which utilizes an ampoule bottle clamp to clamp single bottles and a supporting platform to clamp single bottles in groups and is rotatable, and is matched with the ink-jet printing mechanism which is movably arranged, so that the single bottle ink-jet printing processing operation is facilitated, and meanwhile, the effect of single bottle horizontal ink-jet printing of ampoule bottles is improved.

The technical scheme adopted by the utility model is as follows: the utility model provides an ampoule inkjet printing mechanism, includes the frame, be provided with liftable supporting platform in the frame, the standing groove that is used for vertical ampoule of placing has been seted up side by side on the supporting platform, correspond supporting platform position in the frame and be provided with the ampoule anchor clamps that are used for pressing from both sides tight ampoule both ends, still be provided with the straight line actuating mechanism that is used for driving ampoule anchor clamps to open and shut along the bottle axis direction of ampoule in the frame, still be provided with the rotary driving mechanism who is used for driving ampoule rotation on the ampoule anchor clamps, correspond the position activity in the frame directly over the standing groove and be provided with inkjet printing mechanism.

In order to further optimize the utility model, the following technical scheme can be preferably selected:

preferably, the ampoule bottle clamp comprises a support frame, an upper chuck and a lower chuck which are arranged on the support frame in a relative rotation manner, wherein the upper chuck and the lower chuck are respectively used for clamping the top and the bottom of an ampoule bottle, and the upper chuck and the lower chuck are arranged opposite to two ends of a placing groove; the upper clamping head and the lower clamping head are positioned on the same axis, conical covers are arranged at the contact positions of the upper clamping head and the lower clamping head with the ampoule bottles, the contact area between the conical covers and the ampoule bottles is increased, and the fixing stability is improved.

Preferably, the upper clamping head is telescopically arranged on the supporting frame, a compression spring is coaxially arranged on the upper clamping head corresponding to the back position of the conical cover, the ampoule bottle is elastically supported by the compression spring, and the ampoule bottle is prevented from being broken due to rigid contact.

Preferably, a fixed seat is movably arranged on the rack, a plurality of upper chucks and lower chucks are arranged on the fixed seat side by side, the linear driving mechanism comprises a sliding rail arranged along the moving direction of the upper chucks and the lower chucks, a sliding block matched with the sliding rail is arranged on the fixed seat, a driving screw rod used for driving the fixed seat to move along the sliding rail is arranged on the supporting frame, a sliding seat matched with the driving screw rod is arranged on the fixed seat, and the driving screw rod is connected with a driving motor; the driving screw rod is matched with the linear slide rail, so that the linear consistency and stability of the moving process of the upper chuck and the lower chuck are improved.

Preferably, the support frame is provided with mounting grooves corresponding to the positions of the upper chuck and the lower chuck, the mounting ends of the upper chuck and the lower chuck are rotatably arranged in the mounting grooves, the rotary driving mechanism comprises a driving gear arranged at the back of the mounting end of the lower chuck, and the driving gear is connected with a servo driving motor.

Preferably, the support frame is further provided with a limit stop for limiting the moving area of the fixing seat, the fixing seat is provided with a baffle plate matched with the limit stop, and the limit stop is symmetrically arranged on two sides of the baffle plate.

Preferably, a driving cylinder for driving the supporting platform to lift is upwards arranged on the frame, and the driving end of the driving cylinder is connected with the bottom of the supporting platform.

Preferably, the frame is provided with auxiliary guide mechanism corresponding to the position of the supporting platform near the two ends, the auxiliary guide mechanism comprises guide sleeves arranged at the two ends of the supporting platform, and guide posts are coaxially arranged at the positions of the frame corresponding to the guide sleeves, so that the stability of the lifting process of the supporting platform is improved.

Preferably, the ink-jet printing mechanism is arranged on one side of the rack corresponding to the supporting platform, a transverse sliding rail is arranged on the rack along the arrangement direction of the ampoule bottles, a movable frame is arranged on the transverse sliding rail, and the ink-jet printing mechanism is arranged on the movable frame; the synchronous belt is arranged at the position of the rack corresponding to the transverse sliding rail, the movable frame is arranged on the synchronous belt, and the synchronous belt is connected with a servo driving motor through a synchronous belt pulley.

Preferably, the inkjet printing mechanism is arranged on the movable frame in a lifting manner through the height adjusting mechanism, the height adjusting mechanism is used for adjusting the distance between the inkjet printing mechanism and the supporting platform, the inkjet printing mechanism comprises a color printing spray head and a UV lamp which are arranged along the moving direction of the movable frame, the height adjusting mechanism comprises a mounting plate and two vertical sliding rails, the vertical sliding rails are upwards symmetrically arranged on the movable frame, corresponding moving blocks are arranged on the two vertical sliding rails in a sliding manner, locking pieces are arranged on the moving blocks, the mounting plate is fixed between the two moving blocks, and the color printing spray head and the UV lamp are fixed on the corresponding mounting plate.

The beneficial effects of the utility model are as follows:

1. the ampoule bottle clamp is designed in the scheme, and comprises an upper chuck and a lower chuck which are arranged in a relative rotation manner, and the two ends of the ampoule bottle are supported and fixed by the upper chuck and the lower chuck, so that the original side wall supporting and fixing form is changed, the bottle body is prevented from being blocked, and the subsequent ink-jet printing treatment of the bottle body is facilitated; especially, be convenient for follow-up body surface spray printing and handle, wherein go up the scalable setting of chuck on the support frame, go up the coaxial compression spring that is provided with in toper cover back position that corresponds on the chuck, utilize compression spring to guarantee the elastic support ampoule, prevent that ampoule from breaking because of rigid contact.

2. This scheme is based on ampoule anchor clamps, has still designed the horizontal bottle clamping mechanism that is used for pressing from both sides tightly in batches, utilizes horizontal bottle clamping mechanism to carry out the batch and presss from both sides tight support, is convenient for batchization to handle the ampoule, improves production efficiency, and wherein supporting platform designs to liftable, can not influence each other in the rotatory in-process of ampoule anchor clamps of being convenient for.

3. According to the scheme, the ink-jet printing mechanism is movably arranged on the rack through the adjusting mechanism, on one hand, when medicine bottles with different diameters are printed, the position of the moving block on the sliding rail is adjusted, so that the mounting plate drives the UV ink-jet printing mechanism to move up and down, and the distance between the ink-jet printing mechanism and ampoule bottles in the lower placing groove is adjusted, so that the device can adapt to the convex character printing operation of medicine bottles with different diameters, and the device has practicability; and meanwhile, the requirement of different heights of the ink-jet printing mechanism during printing and maintenance and overhaul can be met conveniently.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an ampoule ink-jet printing;

FIG. 2 is a schematic diagram of the overall structure of the horizontal bottle clamping mechanism;

FIG. 3 is a schematic diagram of the overall structure of the horizontal bottle clamping mechanism II;

FIG. 4 is a top view of the horizontal bottle clamping mechanism;

FIG. 5 is an enlarged schematic view of the structure at A;

FIG. 6 is an enlarged schematic view of the structure at B;

FIG. 7 is a schematic top view of an ampoule ink jet printing;

fig. 8 is an enlarged schematic view of the structure at C.

The device comprises a 1-frame, a 401-supporting frame, a 402-upper chuck, a 403-lower chuck, a 404-linear driving mechanism, a 405-conical cover, a 406-compression spring, a 407-fixed seat, a 408-sliding rail, a 409-sliding block, a 410-driving screw rod, a 411-sliding seat, a 412-limit stop and a 413-baffle; 414-supporting platform, 415-placing groove, 416-driving cylinder, 417-guiding sleeve, 418-guiding column and 419-ampoule bottle.

501-an ink jet printing mechanism, 502-a transverse sliding rail, 503-a movable frame, 504-a height adjusting mechanism, 505-a color printing nozzle, 506-a UV lamp, 507-a vertical sliding rail, 508-a mounting plate, 509-a movable block and 510-a synchronous belt.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. All other embodiments, which are obtained by a person skilled in the art based on the described embodiments of the utility model, fall within the scope of protection of the utility model.

Example 1:

as shown in fig. 1-8, an ampoule ink-jet printing mechanism comprises a frame 1, wherein a liftable supporting platform 414 is arranged on the frame 1, a placing groove 415 for placing an ampoule 419 is formed in the supporting platform 414 side by side, the placing groove 415 is clamped with the middle part of a body of the ampoule 419, ampoule clamps are arranged at two ends of the ampoule in a suspended state corresponding to the supporting platform on the frame, a linear driving mechanism for driving the ampoule clamps to open and close along the axis direction of the ampoule is also arranged on the frame, a rotary driving mechanism for driving the ampoule to rotate is also arranged on the ampoule clamps, and an ink-jet printing mechanism 501 is movably arranged right above the corresponding placing groove on the frame; the ink jet printing mechanism is installed on one side of the frame corresponding to the supporting platform, a transverse sliding rail 502 is installed on the frame along the arrangement direction of ampoule bottles, a movable frame 503 is installed on the transverse sliding rail, the ink jet printing mechanism is arranged on the movable frame, a synchronous belt 510 is installed on the frame corresponding to the position of the transverse sliding rail, the movable frame is installed on the synchronous belt, and the synchronous belt is connected with a servo driving motor through a synchronous belt wheel.

The ink-jet printing mechanism is installed on the movable frame in a lifting manner through a height-adjusting mechanism 504, the height-adjusting mechanism is used for adjusting the distance between the ink-jet printing mechanism and the supporting platform, the ink-jet printing mechanism comprises a color printing spray head 505 and a UV lamp 506 which are installed along the moving direction of the movable frame, the height-adjusting mechanism comprises a mounting plate 508 and two vertical sliding rails 507, the vertical sliding rails are installed on the movable frame upwards symmetrically, corresponding moving blocks 509 are arranged on the two vertical sliding rails in a sliding manner, locking pieces are arranged on the moving blocks, the mounting plate is fixed between the two moving blocks 509, and the color printing spray head and the UV lamp are fixed on the corresponding mounting plates; according to the scheme, the ink-jet printing mechanism is movably arranged on the rack through the adjusting mechanism, on one hand, when printing on medicine bottles with different diameters, the position of the moving block on the sliding rail is adjusted, so that the mounting plate drives the ink-jet printing mechanism to move up and down, and the distance between the ink-jet printing mechanism and ampoule bottles in the lower placing groove is adjusted, so that the device can adapt to the convex character printing operation of medicine bottles with different diameters, and has practicability; and meanwhile, the requirement of different heights of the ink-jet printing mechanism during printing and maintenance and overhaul can be met conveniently.

In addition, the ink-jet printing mechanism adopts a UV printer in the scheme, and the UV printer (Ultraviolet LED Inkjet Printer) is a high-tech plate-making-free full-color digital printer, is not limited by materials, and can perform color photo-level printing on the surfaces of T-shirts, sliding doors, cabinet doors, sliding doors, glass, plates, various labels, crystals, PVC, acrylic, metals, plastics, stones, leather and the like. The plate making is not needed to be finished by one-step printing, the color is beautiful and rich, the anti-ultraviolet light is resistant, the operation is simple and convenient, the image printing speed is high, and the industrial printing standard is completely met. According to the utility model, the UV printer is adopted to print the ampoule bottle body, so that the problem of single color of the existing ampoule bottle by adopting a roll printing technology is solved, the definition of printed handwriting is ensured, and the printing efficiency of the whole equipment is improved.

The ampoule bottle clamp comprises a support frame 401, an upper chuck 402 and a lower chuck 403 are relatively rotatably arranged on the support frame 401, the upper chuck and the lower chuck are respectively used for clamping the top and the bottom of an ampoule bottle, and a linear driving mechanism 404 for driving the upper chuck and the lower chuck to move along the bottle axis direction of the ampoule bottle is also arranged on the frame. The support frame is provided with a fixed seat 407 which is movably arranged, a plurality of upper chucks and lower chucks are arranged on the fixed seat 407 side by side, the positions and the numbers of the upper chucks and the lower chucks are arranged corresponding to the placing grooves, the linear driving mechanism comprises a sliding rail 408 which is arranged along the moving direction of the upper chucks and the lower chucks, a sliding block 109 which is matched with the sliding rail is arranged on the fixed seat, a driving screw 410 which is used for driving the fixed seat to move along the guide rail is arranged on the support frame, a sliding seat 411 which is matched with the driving screw is arranged on the fixed seat, the driving screw is connected with a servo driving motor, the driving screw is arranged in the middle position of the fixed seat, and the linear consistency and the stability of the moving process of the upper chucks and the lower chucks are improved by utilizing the driving screw to match with the linear sliding rail. The linear driving mechanism can also adopt mechanisms such as a driving screw rod, an air cylinder, an electric push rod and the like, supports and fixes the two ends of the ampoule bottle by utilizing the upper clamping head and the lower clamping head, changes the original supporting and fixing mode, prevents the bottle body from shielding, and is convenient for subsequent treatment of the bottle body. The upper clamping head and the lower clamping head are arranged opposite to two ends of the placing groove, and the horizontal bottle clamping mechanism is used for clamping and supporting in batches, so that ampoule bottles can be conveniently treated in batches, and the production efficiency is improved.

As a preferred embodiment, the upper chuck and the lower chuck are positioned on the same axis, the conical cover 405 is arranged at the contact position of the upper chuck and the lower chuck with the ampoule bottle, and the conical cover is used for increasing the contact area with the ampoule bottle, so that the fixing stability is improved.

As a preferred embodiment, the upper chuck is telescopically mounted on the support frame, specifically: the tail of the upper chuck is arranged in a clamping groove formed in the supporting frame, a compression spring 406 is coaxially arranged on the upper chuck corresponding to the back position of the conical cover, the ampoule bottle is elastically supported by the compression spring, and the ampoule bottle is prevented from being broken due to rigid contact.

As a preferred embodiment, the support frame is further provided with a limit stop 412 for limiting the moving area of the fixing seat, the fixing seat is provided with a baffle 413 matched with the limit stop, and the limit stops are symmetrically arranged on two sides of the baffle.

As the preferred embodiment, the frame is upwards provided with a driving cylinder for driving the supporting platform to lift, the driving end of the driving cylinder is connected with the bottom of the supporting platform, and in the actual use process, the driving cylinder can be replaced by other similar linear driving mechanisms, and the driving cylinder 416 is used as a power source to realize the lifting of the supporting platform.

As a preferred embodiment, the frame is provided with auxiliary guide mechanisms corresponding to the positions of the two ends of the supporting platform, the auxiliary guide mechanisms comprise guide sleeves 417 arranged at the two ends of the supporting platform, guide posts 418 are coaxially arranged at the positions of the corresponding guide sleeves in the frame, stability of the lifting process of the supporting platform is improved, and the four groups of guide sleeves are symmetrically distributed at the four corners of the supporting platform respectively in the embodiment so as to ensure supporting stability of the supporting platform.

As a preferred embodiment, mounting grooves are formed in the support frame corresponding to the positions of the upper chuck and the lower chuck, the mounting ends of the upper chuck and the lower chuck are rotatably mounted in the mounting grooves, a driving gear is mounted at the back of the mounting end of the lower chuck, and the driving gear is connected with a servo driving motor; the servo driving motor is utilized to drive the lower clamping head to rotate, the bottom of the ampoule bottle is clamped by the lower clamping head, the cylindrical molded surface at the bottom is convenient to rotate, the lower clamping head is used as a rotary driving position, the upper clamping head is used as a driven position, and further the ampoule bottle clamped between the upper clamping head and the lower clamping head is rotated to facilitate subsequent spray printing treatment.

The using process of the device comprises the following steps: firstly, placing the ampoule on a supporting platform, then clamping and fixing two ends of the ampoule by an ampoule clamp, then lowering the supporting platform to enable the ampoule and the supporting platform to be separated from each other, then driving the ampoule to rotate by a rotary driving mechanism, and performing reciprocating inkjet printing after the inkjet printing mechanism is adjusted to a proper distance above the ampoule, wherein the ampoule rotates by itself in the printing process, so that multi-region inkjet printing of a bottle body is realized.

In the present utility model, unless explicitly specified and defined otherwise, for example, it may be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances.

The foregoing is a preferred embodiment of the present utility model and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present utility model and are intended to be comprehended within the scope of the present utility model.

Claims

1. An ampoule ink jet printing mechanism, characterized in that: including frame (1), be provided with supporting platform (414) of liftable in the frame, supporting platform (414) are last to have set up standing groove (415) that are used for vertically placing the ampoule side by side, correspond supporting platform position in the frame and be provided with ampoule anchor clamps that are used for pressing from both sides tight ampoule both ends, still be provided with the straight line actuating mechanism that is used for driving ampoule anchor clamps to open and shut along the bottle axis direction of ampoule in the frame, still be provided with the rotary driving mechanism who is used for driving ampoule rotation on the ampoule anchor clamps, correspond the position activity in the frame directly over the standing groove and be provided with inkjet printing mechanism (501).

2. An ampoule ink jet printing mechanism as in claim 1 wherein: the ampoule bottle clamp comprises a support frame, an upper chuck (402) and a lower chuck (403) which are arranged on the support frame in a relative rotation manner, wherein the upper chuck and the lower chuck are respectively used for clamping the top and the bottom of an ampoule bottle, and the upper chuck and the lower chuck are arranged opposite to two ends of a placing groove; the upper chuck and the lower chuck are positioned on the same axis, and conical covers (405) are arranged on the positions, which are in contact with the ampoule bottles, of the upper chuck and the lower chuck.

3. An ampoule ink jet printing mechanism as claimed in claim 2, wherein: the upper clamping head is telescopically arranged on the supporting frame (401), and a compression spring (406) is coaxially arranged on the upper clamping head corresponding to the back position of the conical cover.

4. An ampoule ink jet printing mechanism as claimed in claim 2, wherein: the movable fixing device is characterized in that a fixing base (407) is movably arranged on the rack, a plurality of upper chucks and lower chucks are arranged on the fixing base side by side, the linear driving mechanism comprises a sliding rail (408) arranged along the moving directions of the upper chucks and the lower chucks, a sliding block (409) matched with the sliding rail is arranged on the fixing base, a driving screw (410) used for driving the fixing base to move along the guide rail is arranged on the supporting frame, a sliding seat (411) matched with the driving screw is arranged on the fixing base, and the driving screw is connected with a driving motor.

5. An ampoule ink jet printing mechanism as claimed in claim 2, wherein: the rotary driving mechanism comprises a driving gear arranged at the back of the mounting end of the lower chuck, and the driving gear is connected with a servo driving motor.

6. An ampoule ink jet printing mechanism as in claim 4 wherein: the support frame is further provided with limit stops (412) used for limiting the moving area of the fixing seat, the fixing seat is provided with baffle plates (413) matched with the limit stops, and the limit stops are symmetrically arranged on two sides of the baffle plates.

7. An ampoule ink jet printing mechanism as claimed in claim 2, wherein: the lifting device is characterized in that a driving cylinder (416) for driving the supporting platform to lift is upwards arranged on the frame, and the driving end of the driving cylinder is connected with the bottom of the supporting platform.

8. An ampoule ink jet printing mechanism as claimed in claim 2, wherein: the auxiliary guide mechanism is arranged at the position, close to two ends, of the frame, corresponding to the supporting platform, and comprises guide sleeves (417) arranged at two ends of the supporting platform, and guide posts (418) are coaxially arranged at the positions, corresponding to the guide sleeves, of the frame.

9. An ampoule ink jet printing mechanism as in claim 1 wherein: the ink-jet printing mechanism (501) is arranged on one side of a corresponding supporting platform in the frame, a transverse sliding rail (502) is arranged on the frame along the arrangement direction of ampoule bottles, a movable frame (503) is arranged on the transverse sliding rail, the ink-jet printing mechanism is arranged on the movable frame, a synchronous belt (510) is arranged on the frame corresponding to the position of the transverse sliding rail, the movable frame is arranged on the synchronous belt, and the synchronous belt is connected with a servo driving motor through a synchronous belt pulley.

10. The ampoule ink jet printing mechanism of claim 9, wherein: the ink jet printing mechanism is arranged on the movable frame in a lifting mode through a height adjusting mechanism (504), the height adjusting mechanism is used for adjusting the distance between the ink jet printing mechanism and the supporting platform, the ink jet printing mechanism comprises a color printing spray head (505) and a UV lamp (506) which are arranged along the moving direction of the movable frame, the height adjusting mechanism comprises a mounting plate (508) and two vertical sliding rails (507), the vertical sliding rails are upwards and symmetrically arranged on the movable frame, corresponding moving blocks (509) are arranged on the two vertical sliding rails in a sliding mode, locking pieces are arranged on the moving blocks, the mounting plate is fixed between the two moving blocks (509), and the color printing spray head and the UV lamp are fixed on the corresponding mounting plate.