Plate vacuum heat transfer printing equipment

Abstract

The utility model discloses plate vacuum heat transfer printing equipment which comprises a rack, a vacuum pump device, a heat conduction box and a transfer printing assembly, and a lifting driving mechanism, a conveying mechanism, a first heating mechanism and a second heating mechanism are arranged on the rack; the first heating mechanism is located above a heat conduction conveying belt of the conveying mechanism, and the heat conduction conveying belt of the conveying mechanism makes contact with the heating face of the second heating mechanism located below the heat conduction conveying belt. The heat conduction box is located on the heat conduction conveying belt, the heat conduction box is covered with the transfer printing assembly, a sealed heating cavity is defined between the heat conduction box and the transfer printing assembly, a to-be-machined plate which is jacked up is arranged in the sealed heating cavity, and a transfer printing piece in the transfer printing assembly is located above the to-be-machined plate; the lifting driving mechanism is connected with the first heating mechanism, the heat conduction box is provided with an exhaust pipe communicated with the sealed heating cavity, and the exhaust pipe is communicated with a vacuum pump device through a pipeline. According to the utility model, the image or pattern transfer printing of a plurality of surfaces of the plate to be processed can be realized, and the plate is attractive in appearance.

Description

TECHNICAL FIELD

[0001] The utility model relates to stone board processing technical field especially relates to a plate vacuum heat transfer printing equipment. BACKGROUND

[0002] Heat transfer printing is a kind of technology that decorates the surface of stone board, which can make the surface of stone board present personalized patterns and textures. It uses heat transfer printing equipment to heat and apply pressure to the transfer paper or transfer film with patterns, so that it is bonded with the surface of quartz stone, forming a decorative pattern.

[0003] The current heat transfer printing equipment is usually composed of a heating device, a pressure device and a control system. The heating device includes an upper heating plate and a lower heating plate. During operation, the transfer paper or transfer film with patterns or patterns is placed on the upper surface of the quartz plate, and then the quartz plate on the lower heating plate is pressed downward by the upper heating plate. Based on heating and pressure, the transfer paper or transfer film is bonded with the upper surface of the quartz plate to form a decorative pattern or pattern. However, as users' requirements become higher and higher, the single-sided pattern or pattern of the quartz plate produced by the above-mentioned equipment has gradually failed to meet the needs of users. Therefore, there is an urgent need for a heat transfer printing equipment that can realize multi-surface heat transfer printing of patterns or patterns of plate. SUMMARY

[0004] The technical problem to be solved by the utility model is to provide a plate vacuum heat transfer printing equipment that can realize image or pattern transfer printing of multiple surfaces of the plate to be processed, and has good plate aesthetics, which can meet the gradually increasing product demand of users.

[0005] In order to solve the above technical problems, the utility model provides a plate vacuum heat transfer printing equipment, which comprises a rack, a vacuum pump device, a heat conduction box and a transfer printing assembly. The rack is provided with a lifting driving mechanism, a heating mechanism and a conveying mechanism. The heating mechanism comprises a first heating mechanism and a second heating mechanism. The first heating mechanism is located above the heat conduction conveying belt of the conveying mechanism. The heat conduction conveying belt of the conveying mechanism is in contact with the heating surface of the second heating mechanism located below it. The heat conduction box is located on the heat conduction conveying belt, and the transfer printing assembly covers the heat conduction box. A sealed heating cavity is formed between them. The sealed heating cavity is provided with a processed plate that is lifted up. The transfer printing part in the transfer printing assembly is located above the processed plate. The lifting driving mechanism is connected with the first heating mechanism and is used to drive the first heating mechanism to move and abut against the transfer printing assembly. At least one side of the heat conduction box is provided with an air exhaust pipe connected with the sealed heating cavity. The air exhaust pipe is connected with the vacuum pump device through a pipeline.

[0006] As an improvement of the above scheme, the transfer assembly comprises a heat-conducting cover sheet and a transfer piece, the heat-conducting cover sheet covers the heat-conducting box, and the sealed heating cavity is formed between the heat-conducting cover sheet and the heat-conducting box; the transfer piece is located in the sealed heating cavity and laid on the plate to be processed, and the horizontal size of the transfer piece is greater than the horizontal size of the plate to be processed.

[0007] As an improvement of the above scheme, the transfer assembly comprises a heat-conducting hollow frame and a transfer piece, the transfer piece is laid on the heat-conducting box, and the horizontal size of the transfer piece is greater than or equal to the size of the heat-conducting box; the heat-conducting hollow frame presses the transfer piece on the heat-conducting box to form the sealed heating cavity.

[0008] As an improvement of the above scheme, the bottom end surface of the heat-conducting box is provided with a protrusion array, and the protrusion array is used to lift the plate to be processed; the protrusion array comprises a plurality of arrayed protrusions.

[0009] As an improvement of the above scheme, a plurality of air extraction pipes are respectively arranged at one side or both sides of the heat-conducting box.

[0010] As an improvement of the above scheme, the upper part of the heat-conducting box is provided with at least one sealing installation groove surrounding the box opening, and a sealing ring is arranged in the sealing installation groove.

[0011] As an improvement of the above scheme, the transfer piece is a PVC film, a PET film or a PETG film with patterns or patterns; the plate to be processed is a flat plate or a flat plate with a hollow structure.

[0012] As an improvement of the above scheme, the conveying mechanism is used to convey the heat-conducting box sent to the designated processing position and convey the heat-conducting box after heat transfer outward, and the conveying mechanism comprises a conveying frame, a conveying driving device, a driving roller, a driven roller and a heat-conducting conveying belt; the conveying frame is respectively arranged at both sides of the rack, and the driving roller and the driven roller are respectively arranged on the conveying frame at both sides, the driving roller is in transmission connection with the driven roller through the heat-conducting conveying belt, and the conveying driving device is in transmission connection with the driving roller; the second heating mechanism is arranged in the area surrounded by the heat-conducting conveying belt, and the heating surface of the second heating mechanism is in contact with the heat-conducting conveying belt.

[0013] As the improvement of the above-mentioned scheme, a plurality of the lifting driving mechanisms are respectively arranged around the rack, the lifting driving mechanism comprises a lifting driving device, the lifting driving device is installed on the rack, and a driving rod of the lifting driving device is connected with the first heating mechanism; the first heating mechanism comprises an upper heat conduction frame connected with the driving rod of the lifting driving mechanism, a heat conduction layer piece is arranged at the lower part of the upper heat conduction frame, and a heating mounting area is formed between the upper heat conduction frame and the heat conduction layer piece; the first heat insulation layer plate and the first electric heat conduction plate are arranged in the heating mounting area, and the two ends of the first electric heat conduction plate are respectively abutted with the first heat insulation layer plate and the heat conduction layer piece.

[0014] As the improvement of the above-mentioned scheme, the second heating mechanism comprises a lower heat conduction frame installed on the rack, the second heat insulation layer plate and the second electric heat conduction plate are installed on the lower heat conduction frame, and the two ends of the second electric heat conduction plate are respectively abutted with the second heat insulation layer plate and the heat conduction conveying belt above.

[0015] The beneficial effects of the present application are as follows:

[0016] The heat conduction box and the heat conduction assembly are used in cooperation to form a sealed heating cavity,

[0017] The lifting driving mechanism and the first heating mechanism can press on the heat conduction assembly to improve the sealing connection effect between the heat conduction box and the heat conduction assembly, and avoid affecting the stable operation of the vacuum heat transfer printing work due to air leakage. Under the joint action of the first heating mechanism, the second heating mechanism and the vacuum pump device, the sealed heating cavity can be in a vacuum high-temperature working state, the heat transfer printing processing efficiency is improved; the transferred part in the environment is heated and shrunk and adsorbed on the upper surface of the to-be-processed plate material and the remaining multiple side surfaces, so that the image or pattern of multiple surfaces of the to-be-processed plate material is transferred, the plate material is improved in appearance, the gradually increasing product demand of the user is met, and the practicability is good. Secondly, the conveying mechanism can convey the heat conduction box sent from the outside to the specified processing position, and convey the heat transfer printed heat conduction box to the next station, so that the whole plate material moving process does not need manual handling, the working safety of the personnel is effectively improved, and the use safety of the heat transfer printing equipment is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic view of the first embodiment of the plate vacuum heat transfer printing equipment of the present application;

[0019] Figure 2 is Figure 1 a structural schematic view of the transfer assembly and the heat conduction box of

[0020] Figure 3 is Figure 2 an enlarged structural schematic view of A part of

[0021] Figure 4 is Figure 1 the schematic diagram of the three-dimensional structure of the plate vacuum heat transfer printing equipment;

[0022] Figure 5 is Figure 1 the schematic diagram of the side structure of the plate vacuum heat transfer printing equipment;

[0023] Figure 6 is Figure 1 the schematic diagram of the sectional structure of the plate vacuum heat transfer printing equipment;

[0024] Figure 7 is Figure 4 the schematic diagram of the enlarged structure of A part;

[0025] Figure 8 is Figure 6 the schematic diagram of the enlarged structure of A part;

[0026] Figure 9 is the schematic diagram of the connecting structure of the universal joint of the utility model;

[0027] Figure 10 is the schematic diagram of the structure of the second embodiment of the plate vacuum heat transfer printing equipment of the utility model;

[0028] Figure 11 is Figure 10 the schematic diagram of the structure of the transfer assembly and the heat conduction box. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the utility model more clear, the utility model will be described further in detail below in combination with the drawings.

[0030] As Figures 1 to 2The utility model provides a kind of first embodiment structure schematic diagram of plate vacuum heat transfer printing equipment, including rack 1, vacuum pump device 2 and heat conduction box 3 and transfer assembly 9, the rack 1 is equipped with lifting drive mechanism 4, heating mechanism 5 and conveying mechanism 6, the heating mechanism 5 includes first heating mechanism 51 and the second heating mechanism 52;The first heating mechanism 51 is located above the heat conduction conveying belt 65 of the conveying mechanism 6, and the heat conduction conveying belt 65 of the conveying mechanism 6 is in contact with the heating surface of the second heating mechanism 52 located below it, to realize heat conduction work.The heat conduction box 3 is located on the heat conduction conveying belt 65, and the transfer assembly 9 is covered on the heat conduction box 3, and a sealed heating cavity 35 is formed between the two, the sealed heating cavity 35 is equipped with the plate material to be processed being lifted, and the transfer part 92 in the transfer assembly 9 is located above the plate material to be processed;The gap between the plate material to be processed 8 being lifted and the bottom end face in heat conduction box 3 is left for the movement space when transfer part 92 contracts and adsorbs.

[0031] The transfer assembly 9 includes heat conduction gland sheet 91 and transfer part 92, the heat conduction gland sheet 91 is covered on the heat conduction box, and the sealed heating cavity 35 is formed between the two;The transfer part 92 is located in the sealed heating cavity 35 and is laid on the plate material to be processed, and the horizontal dimension of the transfer part 92 is greater than the horizontal dimension of the plate material to be processed.

[0032] The lifting drive mechanism 4 is connected with the first heating mechanism 51, for driving the first heating mechanism 51 to move and abut with the heat conduction gland sheet 91, by pressing the heat conduction gland sheet 91, the sealing connection strength between the heat conduction gland sheet 91 and the heat conduction box 3 can be strengthened, so as to improve the sealing effect of the sealed heating cavity 35, avoid affecting the stable operation of vacuum heat transfer printing work due to air leakage. The heating surface of the first heating mechanism 51 faces the heat conduction gland sheet 91, so as to heat the heat conduction box through the heat conduction gland sheet 91, thereby improving the working temperature in the sealed heating cavity 35. The heat conduction box 3 is equipped with at least one side with the air exhaust pipe 32 being communicated with the sealed heating cavity 35, the air exhaust pipe 32 is communicated with the vacuum pump device 2 through pipeline, so as to carry out vacuumizing treatment to the heat conduction box 3 through the vacuum pump device 2.

[0033] When the heat transfer printing work is performed, the heat-conducting cover plate 91 is in abutment with the first heating mechanism 51, the first heating mechanism 51 can play a heat conduction role on the heat-conducting box 3 through the heat-conducting cover plate 91 to improve the working temperature in the sealed heating cavity 35, and the heat-conducting box 3 is in abutment with the heat-conducting conveying belt 65, the heat of the second heating mechanism 52 is conducted to the heat-conducting box 3 through the heat-conducting conveying belt 65, which also plays a heat conduction role, thereby further improving the heating efficiency in the sealed heating cavity 35 and improving the working temperature in the sealed heating cavity 35. At the same time, in the working process, the vacuum pump device 2 performs vacuumizing work on the sealed heating cavity 35 to make it in a vacuum high-temperature working state, thereby improving the shrinking and adsorbing effect of the transfer printing piece 92. When the transfer printing piece 92 is vacuumized and shrinks, the middle part thereof will shrink downward and be tightly adsorbed on the upper surface of the plate material 8 to be processed, and the four peripheral edges thereof will shrink downward and move and be tightly adsorbed on the four side surfaces or the four side surfaces and part of the bottom surface of the plate material 8 to be processed, and then as the temperature rises, the image or pattern layer on the transfer printing piece 92 will be transferred to the plate material at high temperature, thereby producing a plurality of plate materials (such as quartz plate materials) with patterns or patterns on the surface, improving the appearance of the plate materials, meeting the gradually increasing product demand of users, and having good practicability.

[0034] Secondly, the conveying mechanism 6 is used for conveying the heat-conducting box 3 sent in to a designated processing position and conveying the heat-conducting box 3 after heat transfer outward, and the whole plate material moving process does not need manual handling, thereby effectively improving the working safety of personnel and the use safety of the heat transfer printing equipment.

[0035] Further, as shown in Figure 2 in order to lift the plate material 8 to be processed, a plurality of protrusions 311 arranged in an array are arranged on the bottom end surface of the heat-conducting box 3, the protrusions 311 arranged in an array are used for lifting the plate material 8 to be processed to provide a moving space, so that the peripheral edge area of the transfer printing piece 92 can move along the shape of the plate material when shrinking and adsorbing, thereby realizing the transfer printing of the four side surfaces of the transfer printing piece 92. The protrusions 311 arranged in an array include a plurality of protrusions 311 arranged in an array.

[0036] Preferably, in order to uniformly vacuumize the heat-conducting box 3, a plurality of air suction pipes 32 are arranged at intervals on the two sides of the heat-conducting box 3, and the different positions of the heat-conducting box 3 are vacuumized through the plurality of air suction pipes 32 to improve the uniformity of vacuumization and ensure that the transfer printing pieces 92 at different positions can preliminarily shrink and be adsorbed on the plate material.

[0037] In order to improve the sealing effect of the heat-conducting box 3, as shown in Figures 2 to 3As shown, the upper portion of the heat-conducting box 3 is provided with at least one sealing installation groove 33 surrounding the box opening, and a sealing ring 34 is arranged in the sealing installation groove 33. When the heat transfer printing is performed, the heating surface of the first heating mechanism 51 will press the sealing ring 34 and abut against the heat-conducting box 3, and the sealing effect of the heat-conducting box 3 can be further improved by the sealing ring 34, so as to prevent air from entering the sealed heating cavity 35 and affecting the heat transfer printing effect.

[0038] Preferably, in order to improve the multi-surface printing effect of the plate 8 to be processed, the printing member 92 is preferably a PVC film, a PET film or a PETG film with better thermoplasticity, but is not limited thereto; the printing member 92 with better thermoplasticity can better adsorb and print the patterns or patterns on each side surface of the plate 8 to be processed, thereby improving the multi-surface heat transfer printing effect of the plate.

[0039] Preferably, as shown in Figure 2 the plate 8 to be processed is a flat plate with a hollow structure, when the sealed heating cavity 35 is vacuumized and heated, the middle region of the printing member 92 will move downward to the active space and be adsorbed on the four inner side surfaces of the hollow opening 81 of the plate or on the four inner side surfaces and part of the bottom surface, and the patterns or patterns on the printing member 92 will be gradually printed on the hollow structure at high temperature, thereby further improving the multi-surface heat transfer printing effect of the plate and the aesthetic appearance of the plate. In other embodiments, the plate 8 to be processed can also be preferably a flat plate.

[0040] In order to realize the conveying work of the plate, as shown in Figure 1 , 4 , 5 and 7, the conveying mechanism 6 comprises a conveying frame 61, a conveying driving device 62, a driving roller 63, a driven roller 64 and a heat-conducting conveying belt 65; the conveying frame 61 is installed on both sides of the frame 1, and the driving roller 63 and the driven roller 64 are respectively installed on the conveying frame 61 on both sides, the driving roller 63 is in transmission connection with the driven roller 64 through the heat-conducting conveying belt 65, and the second heating mechanism 52 is arranged in the area surrounded by the heat-conducting conveying belt 65, and the heating surface of the second heating mechanism 52 is in contact with the heat-conducting conveying belt 65 above, so as to heat the heat-conducting box 3 on the heat-conducting conveying belt 65. The conveying driving device 62 is installed on one of the conveying frames 61 and is in transmission connection with the driving roller 63, so as to drive the driving roller 63 to rotate, thereby driving the heat-conducting conveying belt 65 and the driven roller 64 to rotate, and further driving the heat-conducting box on the heat-conducting conveying belt 65 to move, thereby realizing the conveying work of the plate.

[0041] Preferably, the conveying driving device 62 comprises a driving motor 621, a speed reducer 622 and a shaft coupling 623 connected in sequence, both ends of the driving roller 63 are fixed on the conveying frame 61 through bearing seats 631, the shaft coupling 623 is connected with one end of the driving roller 63 through a bearing part on the bearing seat 631, when the driving motor 621 works, it can drive the driving roller 63 to rotate, thereby realizing the conveying work of the conveying mechanism 6.

[0042] In order to improve the conveying stability of the heat-conducting conveying belt 65, the conveying mechanism 6 further comprises a tension adjusting assembly 66, which is arranged on both ends of the conveying frame 61 at the driven roller 64; the tension adjusting assembly 66 comprises a conveying connecting frame 661, guide rail sliding plates 662 and adjusting screws 663, the conveying connecting frame 661 is installed on one end of the conveying frame 61, the guide rail sliding plates 662 are arranged in the conveying connecting frame 661 in an up-down distribution, a sliding bearing 664 is arranged between the two guide rail sliding plates 662 and is in a sliding connection with the guide rail sliding plates 662, one end of the sliding bearing 664 is provided with an adjusting screw 663, one end of the adjusting screw 663 penetrates through the conveying connecting frame 661 and is in a threaded connection with a connecting part of the conveying connecting frame 661, and the bearing part of the sliding bearing 664 is connected with the driven roller 64. When the adjusting screws 663 on both sides are adjusted, the sliding bearing 664 can be driven to move along the guide rail direction of the guide rail sliding plates 662, so as to adjust the position of the driven roller 64, thereby adjusting the tension of the heat-conducting conveying belt 65, making the heat-conducting conveying belt 65 keep uniform tension, ensuring the smooth flow of the stone plate in the conveying process, and improving the transmission efficiency of the heat-conducting conveying belt 65 and prolonging the service life thereof.

[0043] In order to realize stable lifting movement, as shown in Figures 1 to 2 and Figures 4 to 5 A plurality of lifting driving mechanisms 4 are arranged around the rack 1, the lifting driving mechanism 4 comprises a lifting driving device 41 and a guide rod 42, the lifting driving device 41 is installed on the rack 1, one end of the guide rod 42 penetrates through a guide seat sleeve of the rack 1 and is connected with the first heating mechanism 51, and the driving rod 411 of the lifting driving device 41 is connected with the first heating mechanism 51. When the four lifting driving devices 41 drive the first heating mechanism 51 to move up and down, the guide rod 42 can play a guiding role, ensuring that the first heating mechanism 51 stably moves up and down, so that the heating surface of the first heating mechanism 51 is in close abutment with the heat-conducting gland plate 91, on one hand, forming a sealing effect of the sealed heating cavity 35, and on the other hand, playing a heat conduction role on the heat-conducting box 3 and the sealed heating cavity 35, thereby improving the heating efficiency.

[0044] Preferably, in the present embodiment, the lifting driving device 41 adopts a driving oil cylinder, but is not limited thereto, and in other embodiments, a driving electric cylinder or a driving gas cylinder can also be adopted.

[0045] Further, as shown in Figures 4 to 6 and Figures 8 to 9 The first heating mechanism 51 includes an upper heat conduction frame 511 connected with the driving rod 411 of the lifting driving mechanism 4, the lower part of the upper heat conduction frame 511 is provided with a heat conduction layer piece 512, and a heating installation area 515 is formed between the upper heat conduction frame 511 and the heat conduction layer piece 512. The first heat insulation layer plate 513 and the first electric heat conduction plate 514 are arranged in the heating installation area 515, and the upper and lower ends of the first electric heat conduction plate 514 are respectively in abutment with the first heat insulation layer plate 513 and the heat conduction layer piece 512. The first heat insulation layer plate 513 can reduce the heat dissipation performance of the first electric heat conduction plate 514 in other directions, so that more heat is conducted to the heat conduction box through the heat conduction layer piece 512 and the heat conduction gland piece, thereby improving the heating efficiency and the heat transfer printing effect.

[0046] Preferably, the two ends of the first electric heat conduction plate 514 are spaced apart and provided with a plurality of universal joints 516, and the two ends of the universal joint 516 are provided with a screw rod 517. The two ends of the universal joint 516 are respectively connected with the upper heat conduction frame 511 and the first electric heat conduction plate 514 through the screw rod 517, so as to realize the fixed connection between the upper heat conduction frame 511 and the first electric heat conduction plate 514. The connection mode of the universal joint 516 is not easy to be affected by the thermal expansion and contraction characteristics of the first electric heat conduction plate 514, so as to change the installation hole position, improve the connection firmness of the first electric heat conduction plate 514, avoid affecting the normal work of the first electric heat conduction plate 514, thereby reducing the influence on the equipment operation, and ensuring the safe operation of the equipment.

[0047] Further, the second heating mechanism 52 includes a lower heat conduction frame 521 arranged in the area surrounded by the heat conduction conveying belt 65, the lower heat conduction frame 521 is installed on the rack, and the second heat insulation layer plate 522 and the second electric heat conduction plate 523 are arranged on the lower heat conduction frame 521. The two ends of the second electric heat conduction plate 523 are respectively in abutment with the second heat insulation layer plate 522 and the heat conduction conveying belt 65 above. The second heat insulation layer plate 522 can reduce the heat dissipation performance of the second electric heat conduction plate 523 in other directions, so that more heat is conducted to the heat conduction box 3 through the heat conduction conveying belt 65, thereby improving the heating efficiency and the heat transfer printing effect.

[0048] Preferably, the two ends of the second electrically conductive heat plate 523 are also spaced apart and provided with a plurality of universal joints 516, the two ends of the universal joint 516 are provided with a screw rod 517, and the two ends of the universal joint 516 are connected with the lower heat conduction frame 521 and the second electrically conductive heat plate 523 through the screw rod 517 respectively, so as to realize the fixed connection between the lower heat conduction frame 521 and the second electrically conductive heat plate 523; the connection mode of the universal joint 516 is not easy to change the mounting hole position due to the thermal expansion and cold shrinkage characteristics of the second electrically conductive heat plate 523, improves the connection firmness of the second electrically conductive heat plate 523, avoids affecting the normal work of the second electrically conductive heat plate 523, thereby reducing the influence on the equipment operation, and ensuring the safe operation of the equipment.

[0049] Wherein, the two sides of the first electrically conductive heat plate 514 and the second electrically conductive heat plate 523 are provided with insulation protection plates 53 to play a protection role. By adopting the electric heating mode, the heat conduction performance and the heat preservation performance can be improved, and the environment is protected, pollution-free, the electric intelligent temperature control effect is good and the production cost can be saved.

[0050] Preferably, the heat conduction layer 512 and the heat conduction conveying belt 65 are both heat conduction belts, but are not limited thereto.

[0051] As shown in Figures 10 to 11 The second embodiment of the plate vacuum heat transfer printing equipment provided by the utility model also provides a structure schematic diagram, and the embodiment is different from the first embodiment shown in Figure 2 The transfer assembly 9 comprises a heat-conducting hollow frame 93 and a transfer piece 92, the transfer piece 92 is laid on the heat-conducting box 3, and the horizontal size of the transfer piece 92 is greater than or equal to the size of the heat-conducting box 3; the heat-conducting hollow frame 93 presses the transfer piece 92 on the heat-conducting box 3 to form the sealed heating cavity 35.

[0052] When the heat transfer printing work is performed, the heat-conducting hollow frame 93 abuts against the first heating mechanism, the first heating mechanism 51 can conduct heat to the transfer printing piece 92 and the heat-conducting box 3 through the heat-conducting hollow frame 93, and the air in the heat-conducting hollow frame 93 can play a heat conduction role on the transfer printing piece 92, so as to improve the working temperature in the sealed heating cavity 35, and the heat-conducting box 3 abuts against the heat-conducting conveying belt 65, the heat of the second heating mechanism is conducted to the heat-conducting box 3 through the heat-conducting conveying belt, and the heat conduction role can also be played, so as to further improve the heating efficiency in the sealed heating cavity 35 and improve the working temperature in the sealed heating cavity 35. At the same time, in the working process, the vacuum pump device can perform vacuumizing work on the sealed heating cavity 35, so that the sealed heating cavity 35 is in a vacuum high-temperature working state, thereby improving the shrinking and adsorbing effect of the transfer printing piece 92. When the transfer printing piece 92 surrounded by the heat-conducting hollow frame 93 is vacuumized and shrunk by heat, the whole transfer printing piece 92 will be stretched downward and tightly adsorbed on the upper surface of the plate to be processed 8, and the transfer printing piece 92 in the sealed heating cavity 35 will also be stretched downward and moved and tightly adsorbed on the four side surfaces of the plate to be processed 8 or on the four side surfaces and part of the bottom surface, then as the temperature rises, the image or pattern layer on the transfer printing piece 92 will be transferred to the plate at high temperature, thereby producing a plurality of plates (such as quartz plates) with patterns or patterns on the surface, improving the appearance of the plate, meeting the gradually increasing product demand of the user, and being good in practicability.

[0053] In summary, the heat-conducting box and the heat-conducting assembly are used in cooperation to form a sealed heating cavity, the lifting driving mechanism and the first heating mechanism can apply pressure on the heat-conducting assembly to improve the sealing connection effect between the heat-conducting box and the heat-conducting assembly, and avoid affecting the stable operation of the vacuum heat transfer printing work due to air leakage. Through the joint action of the first heating mechanism, the second heating mechanism and the vacuum pump device, the sealed heating cavity can be in a vacuum high-temperature working state, the heat transfer printing processing efficiency is improved, the transfer printing piece in the environment will be shrunk by heat and adsorbed on the upper surface and the remaining multiple side surfaces of the plate to be processed, thereby realizing image or pattern transfer printing on multiple surfaces of the plate to be processed, improving the appearance of the plate, meeting the gradually increasing product demand of the user, and being good in practicability. Secondly, the conveying mechanism can convey the heat-conducting box sent from outside to the designated processing position, and convey the heat-conducting box after heat transfer printing to the next station, and the whole plate moving process does not need manual handling, effectively improving the working safety of personnel, thereby improving the use safety of the heat transfer printing equipment.

[0054] The above is the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, which are also considered within the protection scope of the present application.

Claims

1. A board vacuum heat transfer printing apparatus characterized by comprising: The machine frame, vacuum pump device, heat conduction box and transfer assembly, the machine frame is provided with lifting drive mechanism, heating mechanism and conveying mechanism, the heating mechanism includes first heating mechanism and second heating mechanism; The first heating mechanism is above the heat conduction conveying belt of the conveying mechanism, the heat conduction conveying belt of the conveying mechanism is in contact with the heating surface of the second heating mechanism below it; The heat conduction box is on the heat conduction conveying belt, the transfer assembly covers the heat conduction box, and a sealed heating cavity is formed between them, the processed plate is lifted in the sealed heating cavity, and the transfer part in the transfer assembly is above the processed plate; The lifting drive mechanism is connected with the first heating mechanism and used for driving the first heating mechanism to move and abut against the transfer assembly; At least one side of the heat conduction box is provided with an air exhaust pipe communicated with the sealed heating cavity, and the air exhaust pipe is communicated with the vacuum pump device through a pipeline.

2. The sheet vacuum heat transfer printing apparatus of claim 1, wherein, The transfer assembly includes a heat conduction gland sheet and a transfer part, the heat conduction gland sheet covers the heat conduction box, and the sealed heating cavity is formed between them; The transfer part is in the sealed heating cavity and laid on the processed plate, and the horizontal size of the transfer part is greater than that of the processed plate.

3. The sheet vacuum heat transfer printing apparatus of claim 1, wherein, The transfer assembly includes a heat conduction hollow frame and a transfer part, the transfer part is laid on the heat conduction box, and the horizontal size of the transfer part is greater than or equal to the size of the heat conduction box; The heat conduction hollow frame presses the transfer part on the heat conduction box to form the sealed heating cavity.

4. The sheet vacuum heat transfer printing apparatus of claim 1, wherein A convex array is arranged on the bottom end face in the heat conduction box, and the convex array is used for lifting the processed plate; the convex array includes a plurality of arrayed convex parts.

5. The sheet vacuum heat transfer printing apparatus of claim 1, wherein A plurality of air exhaust pipes are arranged at one side or both sides of the heat conduction box.

6. The sheet vacuum heat transfer printing apparatus of claim 1, wherein At least one sealing installation groove is arranged on the upper part of the heat conduction box and surrounds the box opening, and a sealing ring is arranged in the sealing installation groove.

7. The sheet vacuum heat transfer printing apparatus according to any one of claims 1 to 3, characterized by The transfer part is a PVC film, PET film or PETG film with patterns or patterns; the processed plate is a flat plate or a flat plate with a hollow structure.

8. The sheet vacuum heat transfer printing apparatus according to any one of claims 1 to 6, wherein The conveying mechanism is used for conveying the heat conduction box into the designated processing position and conveying the heat transfered heat conduction box outward, and the conveying mechanism includes a conveying frame, a conveying drive device, a driving roller, a driven roller and a heat conduction conveying belt; The conveying frame is respectively arranged at both sides of the machine frame, the driving roller and the driven roller are respectively arranged on the conveying frame, the driving roller is in transmission connection with the driven roller through the heat conduction conveying belt, the conveying drive device is in transmission connection with the driving roller, and the heating surface of the second heating mechanism is in contact with the heat conduction conveying belt.

9. The sheet vacuum heat transfer printing apparatus according to any one of claims 1 to 6, wherein A plurality of lifting drive mechanisms are arranged around the machine frame, the lifting drive mechanism includes a lifting drive device, the lifting drive device is arranged on the machine frame, and the driving rod of the lifting drive device is connected with the first heating mechanism. The first heating mechanism comprises an upper heat-conducting frame connected with a driving rod of the lifting driving mechanism, a lower part of the upper heat-conducting frame is provided with a heat-conducting layer piece, a heating installation area is formed between the upper heat-conducting frame and the heat-conducting layer piece, a first heat insulation layer plate and a first electric heat-conducting plate are arranged in the heating installation area, and two ends of the first electric heat-conducting plate are respectively in abutment with the first heat insulation layer plate and the heat-conducting layer piece.

10. The sheet vacuum heat transfer printing apparatus of claim 8, wherein, The second heating mechanism comprises a lower heat-conducting frame installed on the rack, a second heat insulation layer plate and a second electric heat-conducting plate are installed on the lower heat-conducting frame, and two ends of the second electric heat-conducting plate are respectively in abutment with the second heat insulation layer plate and the heat-conducting conveying belt above.

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