CN218928975U - Complete machine structure of thermal transfer card printer and printer comprising complete machine structure - Google Patents

Abstract

The utility model relates to the technical field of printers, in particular to a complete machine structure of a thermal transfer card printer and a printer comprising the same, wherein the complete machine structure of the thermal transfer card printer comprises a frame, a printing module and a transfer module; the upper part of the rack is provided with a card transmission channel, and the printing module and the transfer printing module are assembled on the rack in a drawing mode through a sliding mechanism; the transfer printing module is positioned below the card transmission channel, and the printing module is positioned below the transfer printing module. The utility model carries out modularized design on the printing and transfer printing part in the thermal transfer card printer, thereby being convenient for the disassembly, assembly and maintenance of the whole machine; in the structure, the printing module, the transfer printing module and the upper part of the card transmission channel are easy to assemble and disassemble, the production assembly and maintenance difficulty are reduced, the system components such as the color ribbon and the transfer printing film still keep the characteristic that the consumable of the traditional card printer is convenient to replace, the structure is simplified on the basis of ensuring the precision, and the production and manufacturing cost is reduced.

Description

Complete machine structure of thermal transfer card printer and printer comprising complete machine structure

Technical Field

The utility model relates to the technical field of printers, in particular to a complete machine structure of a thermal transfer card printer and a printer comprising the same.

Background

A card printer is a device used for printing certificates, and various chest cards or certificates printed with photos are products of the devices in daily life. Card printers are classified according to how a print pattern is implemented on a card, and can be classified into direct printing printers and retransfer type card printers (thermal transfer card printers). Different from a direct printing type card printer, after the thermal transfer printing type card printer receives a printing instruction transmitted by a PC, the printing head analysis instruction instructs a printing head element to print a card image onto a transfer film firstly by using heat energy, and then the transfer film is reversely fused onto a card, so that the problem that the traditional direct printing type card printer cannot perfectly print the card with the surface which is not quite smooth, such as a built-in electronic chip, an RFID coil and the like, is avoided, and the service life of the printing head is greatly prolonged because the printing head is not in direct contact with the surface of the card.

Printing and transfer printing are extremely critical elements in the work of a retransfer type card printer, and the design of the whole machine is convenient for replacing consumable materials such as color strips, transfer printing films, cleaning rollers and the like, and is convenient for maintenance. The existing thermal transfer card printer is mainly designed by a side-opening door side-inserting belt-changing type complete machine, a maintenance door can be opened only from the side face, and a color belt, a transfer film and a cleaning roller are all pulled and replaced from the side face, so that the structure has the following defects:

1. the ribbon and the transfer film are easy to collide with other structural parts to cause wrinkles in the process of disassembly and assembly;

2. the structural parts are extremely difficult to disassemble and assemble after being damaged, and the later maintenance cost is increased;

3. the equipment is large in size, complex in structure and high in production cost.

Aiming at the defects of the whole structure of the traditional thermal transfer card printer, the whole structure needs to be designed, so that consumable accessories can be conveniently assembled and disassembled, maintenance modes can be simplified, and maintenance cost is reduced.

Disclosure of Invention

The utility model provides a complete machine structure of a thermal transfer card printer, which is used for solving the defects of the complete machine structure of the traditional thermal transfer card printer and achieving the purposes of not only facilitating disassembly and assembly of consumable parts, but also simplifying maintenance modes and reducing maintenance cost.

The utility model provides a complete machine structure of a thermal transfer card printer, which comprises a frame, a printing module and a transfer module;

the upper part of the rack is provided with a card transmission channel, and the printing module and the transfer printing module are assembled on the rack in a drawing mode through a sliding mechanism;

the transfer printing module is positioned below the card transmission channel, and the printing module is positioned below the transfer printing module.

The frame is of a rectangular frame structure, a frame with an opening at the rear part is formed by a frame top plate, a frame bottom plate, a frame front plate and two frame side plates, two transverse partition plates are arranged in the frame, and the interior of the frame is divided into a channel area, a transfer printing area and a printing area from top to bottom;

the card transmission channel is positioned in a channel area of the rack, the transfer printing module is positioned in a transfer printing area of the rack, and the printing module is positioned in a printing area of the rack;

an opening is formed in the rack top plate, and the card transmission channel is positioned below the opening of the rack top plate; and through hole windows are formed in the two separation plates and used for connecting and transmitting the printing module, the transfer printing module and the card transmission channel assembly.

The opening part on the frame roof is provided with the apron, the apron with the opening size looks adaptation on the frame roof, the apron passes through hinged joint the opening edge of frame roof.

The printing module comprises a frame, and a ribbon conveying mechanism and a printing head which are arranged on the frame, wherein the frame of the printing module is formed by encircling a front printing module plate, two side printing module plates and a rear printing module plate, and the ribbon conveying mechanism and the printing head are erected between the two side printing module plates;

the transfer printing module comprises a frame, a printing pressing wheel, a transfer printing heating pressing wheel and a transfer printing film transmission mechanism, wherein the printing pressing wheel, the transfer printing heating pressing wheel and the transfer printing film transmission mechanism are arranged on the frame;

the ribbon conveying mechanism, the printing head, the printing pinch roller, the transfer printing heating pinch roller and the transfer printing film transmission mechanism form a thermal transfer printing system in the frame.

The printing module front plate and the transfer printing module front plate are provided with sliding locking grooves at positions close to two sides, the sides of the printing module front plate and the transfer printing module front plate are provided with slotted holes communicated with the sliding locking grooves, and the side plates of the rack are provided with locking grooves at positions corresponding to the slotted holes;

a sliding locking mechanism is arranged in the sliding locking groove and comprises locking strips, a pressure spring and a sliding guide rail; the sliding guide rail is fixed inside the sliding lock catch groove, the sliding guide rail faces the slotted hole, the lock catch strip is installed on the sliding guide rail and can slide along the sliding guide rail, one end of the lock catch strip is connected to the inner wall of the sliding lock catch groove through the pressure spring, and the other end of the lock catch strip extends out of the slotted hole and enters the lock groove to lock the printing module or the transfer printing module.

A transfer printing area and a printing area of the frame are internally provided with limiting plates which are parallel to the transfer printing module rear plate or the printing module rear plate, positioning holes are formed in the printing module rear plate and the transfer printing module rear plate, and a tower spring assembly is fixed at the positions, opposite to the positioning holes, of the limiting plates;

the tower spring assembly consists of a locating pin and a tower spring, wherein the locating pin and the tower spring are perpendicular to the limiting plate, the diameter of the locating pin is matched with the aperture of the locating hole, and the minimum spiral diameter of the tower spring is larger than the aperture of the locating hole.

The sliding mechanism consists of a sliding groove and a sliding block arranged in the sliding groove, the sliding block is fixed on the printing module or the transfer printing module, the sliding groove is fixedly arranged on the frame, and the printing module or the transfer printing module is pulled and slid on the frame through the sliding block.

The sliding mechanism comprises a plurality of groups of rollers arranged on the printing module and the transfer printing module, the rollers are respectively arranged on the upper part and the lower part of the printing module and the lower part of the transfer printing module, and the printing module and the transfer printing module realize drawing sliding on the frame through the rollers.

The frame is sheet metal structure, the outside parcel of frame has the casing.

The utility model also provides a printer comprising the whole structure.

The whole structure of the thermal transfer card printer and the printer comprising the structure provided by the utility model carry out modularized design on printing and transfer printing parts in the thermal transfer card printer, so that the whole structure is convenient to disassemble, assemble and maintain; in the structure, the printing module, the transfer printing module and the upper part of the card transmission channel are easy to assemble and disassemble, the production assembly and maintenance difficulty are reduced, the system components such as the color ribbon and the transfer printing film still keep the characteristic that the consumable of the traditional card printer is convenient to replace, the structure is simplified on the basis of ensuring the precision, and the production and manufacturing cost is reduced.

Drawings

In order to more clearly illustrate the utility model or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is an overall assembly diagram of the overall structure of a thermal transfer card printer provided by the present utility model;

FIG. 2 is a second overall assembly view of the overall structure of the thermal transfer card printer provided by the present utility model;

FIG. 3 is a schematic view of a print module according to the present utility model;

FIG. 4 is a schematic diagram of a transfer module according to the present utility model;

FIG. 5 is a schematic view of a frame provided by the present utility model;

FIG. 6 is a schematic view of the internal structure of the frame provided by the utility model;

FIG. 7 is a schematic cross-sectional view of a frame provided by the present utility model;

FIG. 8 is a schematic diagram of an assembly of a print module, a transfer module, and a frame provided by the present utility model;

fig. 9 is a schematic structural view of a sliding latch mechanism provided by the present utility model.

Reference numerals:

1. a frame; 2. a printing module; 3. a transfer module; 4. a card transmission channel; 5. a cover plate; 6. a sliding latch groove; 7. a slot hole; 8. a locking groove; 9. a positioning pin; 10. tower spring

1-1, a rack top plate; 1-2, a frame bottom plate; 1-3, a frame front plate; 1-4, a rack side plate; 1-5, separating plate;

2-1, printing a front plate of the module; 2-2, printing module side plates; 2-3, printing a module back plate;

3-1, transferring the module front plate; 3-2, a transfer module side plate; 3-3, transferring the module back plate; 6-1, locking strips; 6-2, a pressure spring; 6-3, sliding guide rail.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Further advantages and effects of the present utility model will become apparent to those skilled in the art from the disclosure of the present specification, by describing the embodiments of the present utility model with specific examples.

In the present utility model, the front, rear, upper and lower in the drawings are regarded as the front, rear, upper and lower of the device during operation in the present specification.

The exemplary embodiments of the present utility model will now be described with reference to the accompanying drawings, however, the present utility model may be embodied in many different forms and is not limited to the examples described herein, which are provided to fully and completely disclose the present utility model and fully convey the scope of the utility model to those skilled in the art.

Unless otherwise indicated, terms used herein, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. In addition, it will be understood that terms defined in commonly used dictionaries should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense.

Specific embodiments of the present utility model are described below in conjunction with fig. 1-9.

The embodiment provides a complete machine structure of a thermal transfer card printer, which is shown in fig. 1 and 2, and comprises a frame 1, a printing module 2 and a transfer module 3.

The upper part of the frame 1 is provided with a card transmission channel 4, and the printing module 2 and the transfer module 3 are assembled on the frame 1 in a drawing mode through a sliding mechanism. The transfer module 3 is located below the card transmission channel 4, and the printing module 2 is located below the transfer module 3.

In this embodiment, the printing and transferring parts of the thermal transfer card printer are made into modularized forms, and are mounted in the frame 1 in a pull type or drawer type mounting mode, when the color ribbon or the transferring film is replaced, the printing module 2 or the transferring module 3 is only required to be pulled out, and then the color ribbon and the transferring film are respectively replaced on the printing module 2 and the transferring module 3, so that the thermal transfer card printer has a simple structure, is convenient for the whole machine to disassemble, assemble and maintain, and reduces the difficulty of production, assembly and maintenance.

As shown in fig. 5, 6 and 7, the frame 1 in the above embodiment may adopt the following structure, and the characteristics of the overall structure are ensured. In this embodiment, the frame 1 is a rectangular frame structure, and comprises a frame top plate 1-1, a frame bottom plate 1-2, a frame front plate 1-3, and two frame side plates 1-4, which form a frame with an open rear, and two transverse partition plates 1-5 are disposed in the frame to partition the interior of the frame into a channel area, a transfer printing area, and a printing area from top to bottom. The card transmission channel 4 is located in a channel area of the frame 1, the transfer module 3 is located in a transfer area of the frame 1, and the printing module 2 is located in a printing area of the frame 1.

The positioning of the card transmission channel 4, the printing module 2 and the transfer printing module 3 is extremely important, in this embodiment, the rectangular frame structure of the frame 1 is divided into a channel area, a transfer printing area and a printing area, the card transmission channel 4 is fixedly arranged in the channel area, the printing module 2 and the transfer printing module 3 are positioned below the card transmission channel 4, and the printing area and the transfer printing area are arranged in a drawer mode in a drawing manner.

In order to ensure smooth operation of the process, in the embodiment, an opening is arranged on the rack top plate 1-1, and the card transmission channel 4 is positioned below the opening of the rack top plate 1-1; the two partition plates 1-5 are provided with through hole windows for connecting and transmitting the components of the printing module 2, the transfer printing module 3 and the card transmission channel 4.

In some embodiments, as shown in fig. 2, in order to facilitate the assembly, disassembly and maintenance of the card transmission channel 4, a cover plate 5 is disposed at the opening on the rack top plate 1-1, the cover plate 5 is matched with the opening on the rack top plate 1-1 in size, and the cover plate 5 is connected to the opening edge of the rack top plate 1-1 through a hinge. The cover plate 5 can be opened at a certain angle through a hinge structure, so that the assembly of the card transmission channel 4 in the rack top plate 1-1 can be conveniently disassembled and maintained.

The present embodiment describes the working process of the thermal transfer card printer in combination with the specific arrangement of the printing module 2 and the transfer module 3, and since the hardware system and the software system of the working process of the thermal transfer card printer are all the existing mature technology, the detailed structural description is not required in the present embodiment, and the existing technology is only required to be applied to the structure of the present embodiment, and the retransfer process and the retransfer principle are not within the protection scope of the present utility model, in the present embodiment, as shown in fig. 3, the printing module 2 includes a frame, and a ribbon transfer mechanism and a printhead mounted on the frame, and the frame of the printing module 2 is formed by enclosing a front plate 2-1 of the printing module, two side plates 2-2 of the printing module, and a rear plate 2-3 of the printing module, and the ribbon transfer mechanism and the printhead are erected between the two side plates 2-2 of the printing module. Referring to fig. 4, the transfer module 3 includes a frame, and a printing press wheel, a transfer heating press wheel and a transfer film transmission mechanism mounted on the frame, where the frame of the transfer module 3 is formed by surrounding a transfer module front plate 3-1, two transfer module side plates 3-2 and a transfer module rear plate 3-3, and the printing press wheel, the transfer heating press wheel and the transfer film transmission mechanism are erected between the two transfer module side plates 3-2.

The printing module 2 and the ribbon conveying mechanism, the printing head, the printing pressing wheel, the transfer heating pressing wheel and the transfer film transmission mechanism inside the transfer printing module 3 form a thermal transfer printing system in the frame 1, the specific connection mode of the thermal transfer printing system refers to the hardware and software arrangement in the existing thermal transfer card printer, the mounting frame is only provided for the components, and the structure provided by the embodiment is utilized to form a modularized structure convenient to disassemble and assemble.

In the working process of the thermal transfer card printer, the printing mode is as follows: firstly, using a thermal sublimation principle to vaporize solid dye on a color belt, forming a pattern on a transfer printing film, and then using a thermal transfer printing technology to melt and press a printed picture information film layer on the film belt to be stuck on a card surface. In the embodiment, in the first step of printing, the picture information prints the dye on the color tape onto the transfer film through a printing head inside the printing module 2; and transferring the transfer printing film to the transfer printing module 3 by a transfer printing film transmission mechanism of the transfer printing module 3, and fitting the card and the transfer printing film by a printing pressing wheel and a transfer printing heating pressing wheel, so that the picture on the transfer printing film is seamlessly covered on the card to complete the transfer printing process.

The printing module 2 and the transfer module 3 are assembled in the frame 1 in a drawing manner, in this embodiment, on the basis of the structure of the above embodiment, locks are added to the printing module 2 and the transfer module 3, so that the structural effects of the printing module 2 and the transfer module 3 can be better achieved, and as shown in fig. 3, 4 and 8, sliding lock grooves 6 are formed in positions, close to two sides, on the front plate 2-1 of the printing module and the front plate 3-1 of the transfer module, on the side surfaces of the front plate 2-1 of the printing module and the front plate 3-1 of the transfer module, slotted holes 7 communicated with the sliding lock grooves are formed, and locking grooves 8 are formed in positions, corresponding to the slotted holes 7, on the side plates 1-4 of the frame. A sliding locking mechanism is arranged in the sliding locking groove 6 and comprises a locking strip 6-1, a pressure spring 6-1 and a sliding guide rail 6-3; the sliding guide rail 6-3 is fixed inside the sliding lock catch groove 6, the sliding guide rail 6-3 faces the slot hole 7, the lock catch strip 6-1 is mounted on the sliding guide rail 6-3 and can slide along the sliding guide rail 6-3, one end of the lock catch strip 6-1 is connected to the inner wall of the sliding lock catch groove 6 through the pressure spring 6-2, and the other end extends out of the slot hole 7 and enters the lock groove 8 to lock the printing module 2 or the transfer printing module 3.

After the printing module 2 and the transfer module 3 are assembled in the frame 1, as shown in fig. 4 and 9, the compression spring 6-2 pushes the locking strip 6-1 to move on the sliding guide rail 6-3 due to the action of the sliding locking mechanism, and the head of the locking strip 6-1 passes through the slot 7 to extend out of the printing module front plate 2-1 or the transfer module front plate 3-1 and enter the locking groove 8 on the frame side plate 1-4, so that a part of the locking strip 6-1 is located in the sliding locking groove 6 and a part of the locking strip 6-1 is located in the frame side plate 1-4 to lock the frame 1 with the printing module 2 or the transfer module 3. When the printing module 2 or the transfer printing module 3 needs to be pulled out, the locking strip 6-1 is manually pushed to the position of the pressure spring 6-2, so that the locking strip 6-1 is separated from the locking groove 8, and the frame 1 is unlocked from the printing module 2 or the transfer printing module 3, so that the printing module 2 or the transfer printing module 3 can be pulled out.

For the functional implementation of the sliding latch mechanism, this embodiment provides an improved structure, and on the basis of the above embodiment, the present embodiment adds a torsion spring component, specifically, a transfer printing area and a printing area of the frame 1 are provided with a limiting plate parallel to the transfer printing module rear plate 3-3 or the printing module rear plate 2-3, positioning holes are formed in the printing module rear plate 2-3 and the transfer printing module rear plate 3-3, and a torsion spring component is fixed at a position on the limiting plate opposite to the positioning holes. The tower spring assembly comprises a locating pin 9 and a tower spring 10, wherein the locating pin 9 and the tower spring 10 are perpendicular to the limiting plate, the diameter of the locating pin 9 is matched with the aperture of the locating hole, and the minimum spiral diameter of the tower spring 10 is larger than the aperture of the locating hole.

When the printing module 2 or the transfer module 3 is installed in the frame 1, the positioning pins 9 and the positioning holes are used for positioning relatively, after the printing module 2 or the transfer module 3 enters the frame 1, the positioning pins 9 are inserted into the positioning holes to realize positioning, and at the moment, the transfer module rear plate 3-3 or the printing module rear plate 2-3 extrudes the tower spring 10, the tower spring 10 becomes a stressed state, and the printing module 2 or the transfer module 3 is locked by the sliding locking mechanism to complete the assembly process, as shown in fig. 8. When the detachable and replaceable printing module is required to be detached and replaced, the locking of the sliding locking mechanism is opened, and at the moment, the tower spring 10 of the tower spring assembly can exert an outward acting force on the rear plate 3-3 of the printing module or the rear plate 2-3 of the printing module, so that the printing module 2 or the printing module 3 is ejected, manual drawing is avoided, and the system is more convenient.

To achieve the drawing of the printing module 2 or the transfer module 3 in the above embodiments, a sliding mechanism must be provided between the printing module 2 or the transfer module 3 and the frame 1, in this embodiment, the sliding mechanism is composed of a sliding groove and a sliding block provided in the sliding groove, the sliding block is fixed on the printing module 2 or the transfer module 3, the sliding groove is fixedly provided on the frame 1, and the printing module 2 or the transfer module 3 achieves drawing sliding on the frame 1 through the sliding block.

The sliding mechanism in the structure can also be a roller structure, the sliding mechanism comprises rollers arranged on the printing module 2 and the transfer printing module 3, a plurality of groups of rollers are respectively arranged on the upper part and the lower part of the printing module 2 and the transfer printing module 3, and the printing module 2 and the transfer printing module 3 realize drawing sliding on the frame 1 through the rollers.

In order to make the structural stability of frame 1, in this embodiment frame 1 is sheet metal structure, and sheet metal structure has guaranteed overall structure's durable, also can conveniently offer some holes, grooves, structures such as window on sheet metal structure and be used for installing inside specific part, in order to guarantee the effect that looks good in appearance, in this embodiment frame 1 outside parcel has the casing, and sheet metal structure guarantees intensity, and the casing guarantees aesthetic property.

The utility model also provides a printer, which comprises the whole machine structure, wherein the printer carries out modularized design on printing and transfer printing parts in the thermal transfer card printer, thereby being convenient for the disassembly, assembly and maintenance of the whole machine; in the structure, the printing module, the transfer printing module and the upper part of the card transmission channel are easy to assemble and disassemble, the production assembly and maintenance difficulty are reduced, the system components such as the color ribbon and the transfer printing film still keep the characteristic that the consumable of the traditional card printer is convenient to replace, the structure is simplified on the basis of ensuring the precision, and the production and manufacturing cost is reduced.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (10)

1. The whole structure of the thermal transfer card printer is characterized by comprising a frame (1), a printing module (2) and a transfer module (3);

the upper part of the frame (1) is provided with a card transmission channel (4), and the printing module (2) and the transfer printing module (3) are assembled on the frame (1) in a drawing mode through a sliding mechanism;

the transfer printing module (3) is located below the card transmission channel (4), and the printing module (2) is located below the transfer printing module (3).

2. The complete machine structure of the thermal transfer card printer according to claim 1, wherein: the frame (1) is of a rectangular frame structure, a frame with an opening at the rear part is formed by a frame top plate (1-1), a frame bottom plate (1-2), a frame front plate (1-3) and two frame side plates (1-4), and two transverse partition plates (1-5) are arranged in the frame to divide the interior of the frame into a channel area, a transfer printing area and a printing area from top to bottom;

the card transmission channel (4) is positioned in a channel area of the frame (1), the transfer printing module (3) is positioned in a transfer printing area of the frame (1), and the printing module (2) is positioned in a printing area of the frame (1);

an opening is formed in the rack top plate (1-1), and the card transmission channel (4) is positioned below the opening of the rack top plate (1-1); the two separation plates (1-5) are provided with through hole windows for connection and transmission of the printing module (2), the transfer printing module (3) and the card transmission channel (4) components.

3. The complete machine structure of the thermal transfer card printer according to claim 2, wherein: the opening part on the rack top plate (1-1) is provided with a cover plate (5), the cover plate (5) is matched with the opening size on the rack top plate (1-1), and the cover plate (5) is connected with the opening edge of the rack top plate (1-1) through a hinge.

4. The complete machine structure of the thermal transfer card printer according to claim 2 or 3, wherein: the printing module (2) comprises a frame, and a ribbon conveying mechanism and a printing head which are arranged on the frame, wherein the frame of the printing module (2) is formed by encircling a front printing module plate (2-1), two side printing module plates (2-2) and a rear printing module plate (2-3), and the ribbon conveying mechanism and the printing head are erected between the two side printing module plates (2-2);

the transfer printing module (3) comprises a frame, and a printing pressing wheel, a transfer printing heating pressing wheel and a transfer printing film transmission mechanism which are arranged on the frame, wherein the frame of the transfer printing module (3) is formed by encircling a front transfer printing module plate (3-1), two side transfer printing module plate (3-2) and a rear transfer printing module plate (3-3), and the printing pressing wheel, the transfer printing heating pressing wheel and the transfer printing film transmission mechanism are erected between the two side transfer printing module plate (3-2);

the ribbon conveying mechanism, the printing head, the printing pinch roller, the transfer printing heating pinch roller and the transfer printing film transmission mechanism form a thermal transfer printing system in the frame (1).

5. The complete machine structure of the thermal transfer card printer according to claim 4, wherein: sliding lock catch grooves (6) are formed in positions, close to two sides, of the printing module front plate (2-1) and the transfer printing module front plate (3-1), slotted holes (7) communicated with the sliding lock catch grooves are formed in the sides of the printing module front plate (2-1) and the transfer printing module front plate (3-1), and lock grooves (8) are formed in positions, corresponding to the slotted holes (7), of the frame side plates (1-4);

a sliding locking mechanism is arranged in the sliding locking groove (6), and comprises a locking strip (6-1), a pressure spring (6-2) and a sliding guide rail (6-3); the sliding guide rail (6-3) is fixed inside the sliding lock catch groove (6), the sliding guide rail (6-3) faces the slotted hole (7), the lock catch strip (6-1) is installed on the sliding guide rail (6-3) and can slide along the sliding guide rail (6-3), one end of the lock catch strip (6-1) is connected to the inner wall of the sliding lock catch groove (6) through the pressure spring (6-2), and the other end of the lock catch strip extends out of the slotted hole (7) to enter the locking groove (8) to lock the printing module (2) or the transfer printing module (3).

6. The complete machine structure of the thermal transfer card printer according to claim 5, wherein: limiting plates parallel to the transfer printing module rear plate (3-3) or the printing module rear plate (2-3) are arranged in the transfer printing area and the printing area of the frame (1), positioning holes are formed in the printing module rear plate (2-3) and the transfer printing module rear plate (3-3), and a tower spring assembly is fixed at the position, opposite to the positioning holes, on the limiting plates;

the tower spring assembly comprises a locating pin (9) and a tower spring (10), wherein the locating pin (9) and the tower spring (10) are perpendicular to the limiting plate, the diameter of the locating pin (9) is matched with the aperture of the locating hole, and the minimum spiral diameter of the tower spring (10) is larger than the aperture of the locating hole.

7. The complete machine structure of the thermal transfer card printer according to claim 1, wherein: the sliding mechanism consists of a sliding groove and a sliding block arranged in the sliding groove, the sliding block is fixed on the printing module (2) or the transfer printing module (3), the sliding groove is fixedly arranged on the frame (1), and the printing module (2) or the transfer printing module (3) is pulled and slid on the frame (1) through the sliding block.

8. The complete machine structure of the thermal transfer card printer according to claim 1, wherein: the sliding mechanism comprises a plurality of groups of rollers arranged on the printing module (2) and the transfer printing module (3), the rollers are respectively arranged on the upper part and the lower part of the printing module (2) and the transfer printing module (3), and the printing module (2) and the transfer printing module (3) are pulled and slid on the frame (1) through the rollers.

9. The complete machine structure of the thermal transfer card printer according to claim 1, 7 or 8, wherein: the frame (1) is a sheet metal structural part, and a shell is wrapped outside the frame (1).

10. A printer, characterized by: comprising the complete machine structure according to any one of claims 1-9.

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