CN218399813U - Heat transfer printing machine - Google Patents

Abstract

The utility model discloses a heat transfer machine for carry out image heat transfer to the electronic equipment shell, including upper cover, casing, rendition cavity, air guide subassembly and circuit board, the upper cover sets up in the top of casing, and the rendition cavity sets up in the casing, and the upper cover is used for the lid to close the rendition cavity, and the circuit board sets up in the casing, and the air guide subassembly is used for bleeding and supplies air to the inside of rendition cavity, and the border of rendition cavity is provided with the reference column, and the reference column is used for fixing a position with the rendition membrane cooperation. The thermal transfer printer can accurately position and fix the transfer film, reduce the transfer defect rate and improve the transfer efficiency.

Description

Heat transfer printing machine

Technical Field

The utility model belongs to heat transfer apparatus field especially relates to a heat transfer machine.

Background

In the existing thermal transfer printing equipment, the transfer printing film is often required to be firstly pasted on a product to be transferred in advance, and then the transfer printing film is further fixed to prevent the transfer printing defect caused by the movement of the transfer printing film, but the error is easily generated, the transfer printing film is possibly shifted, and the defect rate is higher.

Therefore, how to accurately position and fix the transfer film during transfer printing, and greatly reduce the transfer defect rate while improving the transfer efficiency is a technical problem to be solved by technical personnel in the technical field.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the main technical problem who solves provides a heat transfer machine, solves among the prior art that rendition equipment can't pinpoint the transfer film and fixed problem.

For solving the technical problem, the utility model discloses a technical scheme provide a heat transfer machine for carry out image heat transfer to the electronic equipment shell, including the upper cover, a housing, the rendition cavity, air guide component and circuit board, the upper cover sets up in the top of casing, the rendition cavity sets up in the casing, the upper cover is used for the lid to close the rendition cavity, the circuit board sets up in the casing, the air guide component is used for bleeding and supplying air to the inside of rendition cavity, the border of rendition cavity is provided with the reference column, the reference column is used for fixing a position with the rendition membrane cooperation in order to the rendition membrane.

Preferably, the edge of the transfer printing film is provided with a positioning hole, and the positioning hole is used for being sleeved and connected with the positioning column.

Preferably, the transfer film is a film.

Preferably, the number of the positioning holes is six, the six positioning holes are sequentially and adjacently surrounded to form a rectangle, the number of the positioning columns is six, and the six positioning columns are sequentially and adjacently surrounded to form a rectangle.

Preferably, the fixing device further comprises a fixing component, the fixing component is arranged in the transfer printing cavity and used for positioning and fixing the electronic equipment shell, the fixing component comprises a shell jig, a jig mounting table, a fixing lug and a spring, the shell jig is used for nesting the electronic equipment shell, the jig mounting table is used for nesting the shell jig, the jig mounting table is arranged on the inner wall of the transfer printing cavity, the fixing lug is arranged on the jig mounting table, the upper end of the fixing lug is exposed out of the jig mounting table, the spring is vertically arranged on the jig mounting table, the shell jig is provided with a fixing hole, a clamping strip is arranged in the fixing hole and used for clamping the upper end of the fixing lug, the upper end of the fixing lug penetrates through the fixing hole by pressing the shell jig and utilizing the elasticity of the spring, and then the shell jig is transversely moved, so that the clamping strip is clamped with the upper end of the fixing lug.

Preferably, the clamping strips are distributed on two sides of the fixing hole, clamping wings extend out of the upper end heads of the fixing convex blocks towards the two sides, and the clamping wings are used for being in lap joint with the clamping strips.

Preferably, the jig mounting table comprises an upper mounting table and a lower mounting table, the lower mounting table is arranged on the inner wall of the transfer printing cavity, the lower mounting table is provided with a plurality of spring mounting holes for accommodating springs, the springs are exposed out of the upper surface of the lower mounting table, the lower mounting table is provided with a first through hole for the fixed lug to pass through, the upper mounting table is provided with a second through hole for the fixed lug to pass through, and the bottom surface of the upper mounting table is provided with a plurality of first stand columns for penetrating into the center of the spring.

Preferably, still include heating element, heating element sets up in the inside of upper cover and the below of rendition cavity for the heating of image heat rendition, heating element includes hot plate and connecting wire, and connecting wire connects hot plate and circuit board.

Preferably, the gas guide assembly comprises a gas pump, a motor and a gas pipeline, the gas pump is connected with the motor, the gas pipeline is connected with the gas pump, and the gas pipeline is further communicated with the transfer printing cavity.

The beneficial effects of the utility model are that: the utility model discloses a heat-transfer machine for carry out image heat-transfer to the electronic equipment shell, including upper cover, casing, rendition cavity, air guide subassembly and circuit board, the upper cover sets up in the top of casing, and the rendition cavity sets up in the casing, and the upper cover is used for the lid to close the rendition cavity, and the circuit board sets up in the casing, and the air guide subassembly is used for bleeding and supplying gas to the inside of rendition cavity, and the border of rendition cavity is provided with the reference column, and the reference column is used for fixing a position with the rendition membrane cooperation in order to the rendition membrane. The thermal transfer printer can accurately position and fix the transfer film, reduce the transfer defect rate and improve the transfer efficiency.

Drawings

FIG. 1 is a schematic view of a thermal transfer printer according to an embodiment of the present invention;

FIG. 2 is a schematic view showing an opened state of an upper cover in the embodiment shown in FIG. 1;

FIG. 3 is an exploded schematic view of the embodiment of FIG. 2;

FIG. 4 is an exploded schematic view (shielding transfer film) of the embodiment shown in FIG. 3;

FIG. 5 is a schematic cross-sectional view of another embodiment of the thermal transfer printer of the present invention;

FIG. 6 is an exploded view of a fixing member in another embodiment of the thermal transfer printer of the present invention;

FIG. 7 is a schematic cross-sectional view of a fixing member in another embodiment of the thermal transfer printer of the present invention;

FIG. 8 is an enlarged partial view of the portion A in the embodiment shown in FIG. 7;

FIG. 9 is a schematic view of the interior of a housing according to another embodiment of the thermal transfer printer of the present invention;

FIG. 10 is a schematic view of the interior of the housing in another embodiment of the thermal transfer printer of the present invention;

FIG. 11 is a schematic view of a heating unit according to another embodiment of the thermal transfer printer of the present invention.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described in more detail with reference to the accompanying drawings and specific embodiments. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It is to be noted that, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

With reference to fig. 1, 2, 3 and 4, the thermal transfer printer is used for performing image thermal transfer on an electronic device casing, where the electronic device includes, but is not limited to, a mobile phone, a tablet, and the like, and the corresponding electronic device casing includes, but is not limited to, a mobile phone casing, a tablet casing, and the like, the thermal transfer printer includes an upper cover 1, a casing 2, a transfer cavity 3, an air guide component 4, and a circuit board 5, where the upper cover 1 is disposed above the casing 2 and is pivotally connected to the casing 2 through a pivot shaft (not shown, the pivot shaft is similar to a rotating shaft, and enables the upper cover to turn up and down around the shaft), the size of the upper cover 1 is smaller than that of the casing 2, the transfer cavity 3 is disposed in the casing 2, and the upper cover 1 is used for covering the transfer cavity 3, the part of the shell 2, which is larger than the upper cover 1, is provided with a reserved surface 21, the reserved surface 21 is not arranged on the rotary projection of the upper cover 1, an operation panel 22 is arranged on the reserved surface 21, the operation panel 22 is connected with the circuit board 5, the circuit board 5 is arranged in the shell 2, and the air guide assembly 4 is used for exhausting and supplying air to the inside of the transfer printing cavity 3, wherein the area represented by the rotary projection is an area covered between two arc arrows T1 in fig. 2, namely, the partial area of the upper cover 1 projected on the surface of the shell 1 in the rotating process, and the reserved surface 21 is not arranged in the rotary projection area, so that the operation panel on the reserved surface 21 cannot be shielded no matter how the upper cover 1 rotates or stops in the opening state, and the operation is convenient.

The inner wall of rendition cavity 3 is provided with a plurality of slots 6, when current heat-transfer seal machine rendition, often present to the rendition cavity evacuation, and rendition membrane M1 when hugging closely the bottom of rendition cavity, rendition membrane M1 is in the rendition cavity 3 of laminating this embodiment, can produce the bubble, thereby make the air have partly stay in rendition cavity 3, can not be with whole rendition cavity 3 evacuation, and the bubble that produces also can influence the whole effect of rendition, and through setting up slot 6, can make rendition membrane M1 when clinging the inner wall of rendition cavity 3, the air in rendition cavity 3 also can be taken away along slot 6, make rendition membrane M1 at utmost with wait to transfer to the thing and laminate, thereby the at utmost makes rendition cavity 3 become the vacuum state, rendition efficiency and effect have been improved greatly.

Preferably, the inner wall of the upper cover 1 is also provided with a plurality of grooves 6, so that when the upper cover 1 covers the transfer printing cavity 3, air in a larger cavity formed between the transfer printing cavity 3 and the upper cover 1 can be exhausted more cleanly and more quickly.

Preferably, the grooves 6 are holes or strips.

Preferably, the shape of the cross section of the groove 6 is U-shaped, the inner wall of the groove 6 of the U-shaped cross section is smoother, and abrupt bends are few, so that the speed of air circulation in the groove 6 is increased, the air can be pumped out more quickly, and the vacuum pumping efficiency is improved.

Preferably, the plurality of grooves 6 are in cross communication, and particularly, the plurality of grooves 6 are in cross communication in a longitudinal and transverse direction, so that air at each position in the transfer printing cavity 3 can be conveniently and rapidly drawn away along the plurality of communicated grooves 6.

The transfer printing cavity 3 is provided with a vent hole 32, the vent hole 32 is downwards connected with the air guide assembly 4, and at least one groove 6 is communicated with the vent hole 32, so that air in the groove 6 can be conveniently gathered to the vent hole 32 along the groove 6, the vacuum-pumping efficiency is improved, and the air can be pumped to dry more quickly.

Further preferably, the vent 32 is disposed at the middle position of the transfer chamber 3, so as to collect and dry the air on four sides inside the transfer chamber 3.

Preferably, the transfer film M1 is a film, the film can also be replaced by color printing paper, images to be transferred are arranged on the film and the color printing paper, the film is used for covering the outer wall of the electronic device housing, and the color printing paper is used for wrapping the outer wall of the electronic device housing.

With reference to fig. 5, 6, 7 and 8, the thermal transfer printer further includes a detachable fixing component 7 disposed in the transfer printing cavity 3, the fixing component 7 is used for nesting the electronic device casing, that is, the fixing component 7 is used for positioning and fixing the electronic device casing, the fixing component 7 includes a casing fixture 71, a fixture mounting table 72, a fixing bump 73 and a spring 74, the casing fixture 71 is used for nesting the electronic device casing, the fixture mounting table 72 is used for nesting the casing fixture 71, the fixture mounting table 72 is disposed on the inner wall of the transfer printing cavity 3, the fixing bump 73 is disposed on the fixture mounting table 72, the upper end of the fixing bump 73 is exposed out of the fixture mounting table 72, the spring 74 is vertically disposed on the fixture mounting table 72, the casing fixture 71 is provided with a fixing hole 711, be provided with block strip 7111 in fixed orifices 711, block strip 7111 is used for carrying out the block to the upper portion end of fixed lug 73, through pressing shell tool 71, utilize the elasticity of spring 74, make the upper portion end of fixed lug 73 pass fixed orifices 711, lateral shifting shell tool 71 again, make block strip 7111 realize the block with the upper portion end of fixed lug 73, the detachable design of fixed subassembly 7, on the one hand, can make the electronic equipment shell can pinpoint and fix, reduce the rendition error, improve rendition efficiency and effect, on the other hand through changing different types of shell tool 71, make shell tool 71 can match the electronic equipment shell of different sizes and shape, for example, match different types of cell-phone shell, and then can carry out the image transfer to diversified cell-phone shell.

Preferably, the engaging strips 7111 are disposed at two sides of the fixing hole 711, and the upper ends of the fixing protrusions 73 extend to two sides to form engaging wings 731 for engaging with the engaging strips in an overlapping manner.

Preferably, the end of the engaging strip 7111 is provided with a protrusion Q1, the protrusion Q1 is in a dot shape, a spherical shape or a ridge shape, and when the engaging wings 731 are engaged with the engaging strip 7111, the protrusion Q1 can block the engaging wings 731 from disengaging from the engaging strip 7111, so as to ensure the stability of the engagement between the housing jig 71 and the jig mounting table 72, thereby ensuring the transfer effect.

Preferably, the jig mounting table 72 includes an upper mounting table 721 and a lower mounting table 722, the lower mounting table 722 is disposed on the inner wall of the transfer printing cavity 3, the lower mounting table 722 is provided with a plurality of spring mounting holes 7221 for accommodating the springs 74, and the springs 74 are exposed on the upper surface of the lower mounting table 722, the lower mounting table 722 is provided with a first through hole 7222 for the fixing protrusion 73 to pass through, the upper mounting table 721 is provided with a second through hole 7211 for the fixing protrusion 73 to pass through, and the bottom surface of the upper mounting table 721 is provided with a plurality of first vertical columns (not shown) for penetrating into the center of the springs 74, the first vertical columns are used for penetrating into the central axis of the springs 74, that is, the springs 74 are sleeved on the first vertical columns, so as to conveniently limit the direction of the elastic deformation of the springs 74, ensure that the springs 74 are always elastically deformed in the vertical direction, and the spring mounting holes 7221 also limit and fix the positions of the springs 74, so that the springs 74 are always elastically deformed in the vertical direction, thereby ensuring the accuracy of the position of the case 71 pressed down on the jig mounting table 72, and ensuring the final transfer printing effect.

The heat transfer machine further comprises a transfer printing assembly 8, the transfer printing assembly comprises a silica gel layer 81, the silica gel layer 81 is arranged on the inner wall of the upper cover 1, the silica gel layer 81 is used for wrapping the shell of the electronic equipment through thermal deformation, the transfer printing assembly 8 further comprises a support frame 82, the support frame 82 is used for supporting the fixed silica gel layer 81, the support frame 82 is rectangular, the support frame 82 surrounds the periphery of the silica gel layer 81, and therefore the silica gel layer 81 is unfolded to be smooth, the silica gel layer 81 has ductility, and thermal deformation is achieved.

Preferably, a positioning column 31 is disposed at an edge of the transfer printing cavity 3, and the positioning column 31 is used for cooperating with the transfer printing film M1 to position the transfer printing film M1.

Further preferably, the border of rendition membrane M1 is provided with locating hole M2, locating hole M2 is used for being connected with reference column 31 registrates, through setting up reference column 31, can be so that when fixed rendition membrane M1 with locating hole M2 and reference column 31 registrates can, greatly improve the location accuracy nature of rendition membrane, avoid current rendition equipment need paste the rendition membrane in advance when the rendition and wait to transfer to the condition that the rendition membrane aversion that arouses caused the rendition error on the object, greatly reduced the rendition flaw rate, improved rendition efficiency and effect.

Preferably, six positioning holes M2 are formed, six positioning holes M2 sequentially and adjacently enclose a synthetic rectangle, six positioning columns 31 are formed, and six positioning columns 31 sequentially and adjacently enclose a synthetic rectangle, so that the positioning columns 31 and the positioning holes M2 are accurately sleeved, and the positioning and fixing accuracy of the transfer printing film M1 is guaranteed.

Preferably, with reference to fig. 9 and 10, the air guide assembly 4 is disposed inside the casing 2, the air guide assembly 4 includes an air pump 41 disposed inside the casing 2, a motor 42 and an air pipeline 43, the air pump 41 is connected to the motor 42, the air pipeline 43 is connected to the air pump 41, the air pipeline 43 is further communicated with the transfer printing cavity 3, specifically, the transfer printing cavity 3 is provided with a vent hole 32, the vent hole 32 is connected to the air pipeline 43 downward, that is, the air pipeline 43 is further communicated with the vent hole 32, and the air guide assembly 4 is disposed inside the casing 2, so that the safety problem caused by exposure to the outside is solved, and meanwhile, the condition that the soft air pipeline is exposed to the outside and easily causes winding and knotting is avoided, the safety of the transfer printing vacuum-pumping process is improved, the space occupation volume of the transfer printing device is reduced, and the transfer printing efficiency is improved.

Preferably, the gas pipeline 43 includes a first pipeline L1, a second pipeline L2 and a third pipeline L3, a first end of the first pipeline L1 is connected to the vent hole 32, a second end of the first pipeline L1 is connected to a first end of the second pipeline L2 and a first end of the third pipeline L3, a second end of the second pipeline L2 is connected to a vent valve 44, the vent valve 44 is used for air to enter the second pipeline L2, namely, air in the transfer chamber 3 needs to be recovered after the transfer chamber 3 is vacuumized, so as to open the upper cover and take out the electronic device housing after the image transfer is successful, which needs to enter air outside the transfer chamber 3 into the second pipeline L2 through the vent valve 44 and further convey air into the transfer chamber 3 through the first pipeline L1 to relieve the vacuum state of the transfer chamber 3, a second end of the third pipeline L3 is connected to an air pump 41, an air outlet 411 is arranged on the air pump 41, and the air outlet 411 is used for exhausting air extracted from the transfer chamber 3.

Referring to fig. 11 again, the heating device is further included for heating the image heat transfer, the heating device is disposed inside the upper cover 1 and below the transfer cavity 3, specifically, the heating device includes a heating plate 9 and a connecting wire 91, the connecting wire 91 connects the heating plate 9 and the circuit board 5, an auxiliary transfer cavity 11 is disposed in the upper cover 1, the heating plate 9 is disposed on the outer wall of the auxiliary transfer cavity 11 and the outer wall of the bottom of the transfer cavity 3, and by disposing the heating plate 9, the heating and the transfer of the auxiliary transfer cavity 11 and the transfer cavity 3 can be controlled.

When the heat transfer machine is practically used, the upper cover 1 is opened firstly, an electronic equipment shell is embedded on the fixing component 7, then the transfer film M1 provided with an image to be transferred is fixed on the transfer cavity 3 through the nesting of the positioning hole M2 and the positioning column 31, so that the image to be transferred corresponds to the mobile phone shell in a good position, or the transfer film M1 is replaced by color printing paper, the outer wall and the side wall of the mobile phone shell are wrapped by the color printing paper, then the mobile phone shell is embedded on the fixing component 7, the transfer film M1 or the color printing paper is utilized, the fixing component 7 is positioned and fixed, then the upper cover 1 is covered on the transfer cavity 3, then the operation panel 22 is controlled for transfer printing, during heat transfer printing, the air in the transfer cavity 3 is pumped out through the air guide component 4, the transfer cavity 3 is in a vacuum state, the heating component heats the transfer cavity 3, meanwhile, the silica gel layer 81 can deform to wrap the transfer cavity, comprehensive influence is exerted, the transfer film M1 or the color printing paper is printed on the mobile phone shell, the image to be printed on the mobile phone shell, then the air guide component 4 is conveyed to the transfer cavity 3 again, the air guide component, the air guide cavity 3 is opened, and the transfer film is taken out, and the transfer process is completed.

Based on the above embodiments, the present invention discloses a thermal transfer printer for performing thermal transfer printing on an image on a housing of an electronic device, and the thermal transfer printer has the following advantages:

1. compare in prior art heat-transfer machine and shelter from operating interface easily at the open mode, with this can hinder operating personnel to the operation of heat-transfer machine, the rendition efficiency of heat-transfer machine has been reduced, this application is through setting up the reservation face on the casing, and the reservation face does not set up on the rotation projection of upper cover, with this avoid the upper cover to the sheltering from of reservation face, then set up operating panel on the reservation face and carry out the rendition operation, this has avoided the upper cover to operating panel's sheltering from at the open mode, the rendition operation has been made things convenient for, the rendition efficiency has been improved.

2. Compare in prior art and take place the rendition membrane easily when the rendition evacuation and hug closely rendition cavity inner wall gassing, the vacuum degree of rendition cavity has been reduced, influence whole rendition efficiency then, this application heat transfer machine sets up a plurality of slots through the inner wall at the rendition cavity, make the rendition membrane when pasting tight rendition cavity inner wall, the air in the rendition cavity can be taken out along the slot, the production of bubble has been avoided, the vacuum degree of rendition cavity has been improved greatly, rendition effect and efficiency have been improved greatly then.

3. Compare in prior art before the rendition need paste the rendition membrane earlier on treating the rendition object, then it is fixed with the rendition membrane, the aversion of rendition membrane takes place easily during this, thereby make the rendition produce higher defective percentage, this application heat transfer machine is through setting up the reference column at rendition cavity border, come to carry out accurate location with the rendition membrane cooperation with this, the higher condition of rendition defective percentage that has avoided the fixed inaccurate of rendition membrane position to cause, greatly reduced the rendition defective percentage, make the rendition membrane fix a position accurately, the transfer efficiency is improved.

4. Compare often will treat the rendition object setting in the cavity that shape and size are fixed when the rendition among the prior art, make and treat that the rendition object is fixed firm, but this makes the rendition kind, rendition shape and rendition size have received the restriction, can't realize different types, shape and size treat the rendition object and carry out the rendition, the fixed knot who is used for fixed the object of treating the rendition often also is that the structure is fixed not dismantled and assembled, this application heat transfer machine treats the rendition object through setting up removable fixed subassembly and fixes, realized the location accuracy and fixed firm of treating the rendition object on the one hand, the rendition error has been reduced, transfer efficiency and effect have been improved, on the other hand shell tool in the different fixed subassemblies of accessible replacement, make the shell tool can match the rendition object of treating of different sizes and shapes, for example, match different types of cell-phone shells, and then can carry out the image transfer to diversified cell-phone shell.

5. Compare in prior art need carry out the evacuation operation to the rendition cavity when the rendition, but the pipeline structure of evacuation wherein sets up in the rendition equipment outsidely, this is unfavorable for the safety of evacuation subassembly and pipeline on the one hand, on the other hand also can occupy too much space volume, and the pipeline is often soft, the condition of knoing can take place to twine in the external world, influence rendition evacuation operation, thereby influence the rendition effect, this application heat transfer machine has avoided the exerted condition of pipeline of evacuation through setting up the air guide subassembly that will be used for the evacuation inside the casing, avoided the evacuation pipeline to expose and the emergence of the security problem that arouses on the one hand, on the other hand has also hidden and has protected the air guide subassembly, avoided because the evacuation pipeline exposes and the condition that occupies too much space volume that appears.

The above is only the embodiment of the present invention, and the patent scope of the present invention is not limited thereby, and all the equivalent structure changes made by the contents of the specification and the drawings, or the direct or indirect application in other related technical fields, are included in the patent protection scope of the present invention.

Claims (9)

1. The utility model provides a heat transfer machine for carry out image heat transfer to electronic equipment shell, its characterized in that, including upper cover, casing, rendition cavity, air guide subassembly and circuit board, the upper cover set up in the top of casing, the rendition cavity set up in the casing, the upper cover is used for the lid to close the rendition cavity, the circuit board set up in the casing, the air guide subassembly is used for right the inside of rendition cavity is bled and is delivered air, the border of rendition cavity is provided with the reference column, the reference column be used for with the rendition membrane cooperation in order to right the rendition membrane is fixed a position.

2. The thermal transfer printer according to claim 1, wherein the edge of the transfer film is provided with a positioning hole, and the positioning hole is used for being sleeved and connected with the positioning column.

3. The thermal transfer printer of claim 2, wherein the transfer film is a film.

4. The thermal transfer printer according to claim 3, wherein the number of the positioning holes is six, and six positioning holes are sequentially and adjacently surrounded to form a rectangle, and the number of the positioning posts is six, and six positioning posts are sequentially and adjacently surrounded to form a rectangle.

5. The thermal transfer printer according to any one of claims 1 to 4, further comprising a fixing component, the fixing component being disposed in the transfer printing cavity and configured to position and fix the electronic device housing, the fixing component including a housing jig, a jig mounting table, a fixing protrusion, and a spring, the housing jig being configured to nest the electronic device housing, the jig mounting table being configured to nest the housing jig thereon, the jig mounting table being disposed on an inner wall of the transfer printing cavity, the fixing protrusion being disposed on the jig mounting table, an upper end of the fixing protrusion being exposed from the jig mounting table, the spring being vertically disposed on the jig mounting table, the housing jig being provided with a fixing hole, the fixing hole being provided therein with a clamping strip configured to clamp an upper end of the fixing protrusion, the upper end of the fixing protrusion being configured to pass through the fixing hole by pressing the housing jig, utilizing elasticity of the spring, and then the housing jig being moved laterally so that the clamping strip is clamped with the upper end of the fixing protrusion.

6. The thermal transfer printer according to claim 5, wherein the engaging strips are disposed on two sides of the fixing hole, and the upper end of the fixing protrusion extends to two sides to form engaging wings for engaging with the engaging strips in an overlapping manner.

7. The thermal transfer printer according to claim 6, wherein the jig mounting table includes an upper mounting table and a lower mounting table, the lower mounting table is disposed on an inner wall of the transfer printing chamber, the lower mounting table is provided with a plurality of spring mounting holes for receiving the springs, the springs are exposed on an upper surface of the lower mounting table, the lower mounting table is provided with a first through hole for the fixing protrusion to pass through, the upper mounting table is provided with a second through hole for the fixing protrusion to pass through, and a bottom surface of the upper mounting table is provided with a plurality of first posts for penetrating into a center of the springs.

8. The thermal transfer printer according to claim 1, further comprising a heating unit provided inside the upper cover and below the transfer chamber for heating of the thermal transfer of the image, the heating unit including a heating plate and a connecting wire connecting the heating plate and the circuit board.

9. The thermal transfer printer according to claim 8, wherein the air guide assembly comprises an air pump, a motor and an air pipeline, the air pump is connected to the motor, the air pipeline is connected to the air pump, and the air pipeline is further communicated with the transfer printing cavity.

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