JP2005255206A - Transfer printing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To transfer a highly precise transfer design to an object M to be printed by improving a pattern of vacuum suction process on pull-out work frames 20, 30 assembled into an upper/lower two-stage structure below a hot plate 40. <P>SOLUTION: In preparation for printing, a transfer sheet S and the object M are overlaid sequentially on a rubber sheet 21 of the lower stage work frame 20 pulled out from a machine frame 10. During the preparation, a heat-resistant cloth is overlaid on the transfer sheet S and object M that are overlaid on the upper stage work frame 30 as the arrangement on the lower stage work frame 20, and the upper stage frame 30 is vacuum sucked, then is heated by the hot plate 40. As the upper stage frame 30 is heated, a sublimable dye migrates from the transfer sheet S to the object M, transferring a prescribed print pattern to the object M. After this transfer printing process is over, the upper work frame 30 is pulled out of the machine frame 10 and is replaced with the lower work frame 20 that is inserted into the machine frame 10 to be subjected to the same transfer printing process. The transfer printing processes, therefore, can be repeated intermittently, which reduces waiting time substantially, thus improves work efficiency. When each work frame 20, 30 is vacuum sucked, air is sucked from an air outlet formed on the inner surface of the casing composing the work frame 20, 30 to eliminate an air turbulence, which prevents a shift of the transfer sheet S to obtain a clear transfer pattern. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an apparatus for transferring and printing a printed pattern applied to a transfer sheet with a sublimation dye on a substrate such as a painted metal plate, a painted tile, a fabric, a painted glass plate, a painted ceramic board, a painted gypsum board, or a resin molded body. .

When a transfer sheet with a printed pattern made of a coloring composition containing a sublimation dye is brought into close contact with the printing material and heated, the sublimation dye penetrates into the surface resin layer of the printing material, and the printing material is transferred and printed in a predetermined pattern. .
Design application using the penetration of sublimation dyes has already been put to practical use in fibers, and application and development are also being studied for resin molded products, films, painted ceramic boards, painted metal plates, and the like.
In order to transfer a predetermined print pattern uniformly to a printing material without unevenness, it is necessary to uniformly adhere the transfer sheet to the printing material. If even a small amount of air remains between the printing material and the transfer sheet, the transfer sheet rises from the printing material, and the sublimation dye does not sufficiently transfer to the printing material, and the density of the portion decreases. The transfer sheet floats even when the moisture contained in the transfer sheet becomes water vapor and does not escape and stays between the printing material and the transfer sheet.

The present inventors have introduced a transfer printing apparatus in Patent Document 1 in which a transfer sheet is brought into close contact with a substrate by vacuum suction to eliminate a printing defect caused by the floating of the transfer sheet. In this transfer printing apparatus, an inner lid 2 and an outer lid 3 are detachably attached to a work table 1, a heat insulating material 5 is disposed on a bottom plate 4 of the work table 1, and a rubber sheet 6 and a cloth 7 are pasted on the inner cover 2. (Figure 1).
In this apparatus, the printed material and the transfer sheet are sandwiched between the heat insulating material 5 and the cloth 7, the inner lid 2 and the outer lid 3 are closed, and then the internal space is depressurized by the vacuum pump 8. The transfer sheet adheres uniformly to the transfer sheet, and the transfer sheet is prevented from floating. When the heat source 9 is turned on and the transfer sheet in close contact is heated, the sublimation dye applied to the transfer sheet penetrates into the resin layer on the surface of the printing material, and a predetermined printing pattern is imparted to the printing material.

However, in this apparatus, the upper body of the worker is exposed to the radiant heat from the heat source 9, and it cannot be said that the working environment is good. In addition, the size of the printable material that can be handled is limited because it is necessary to perform the work of arranging the printed material and the transfer sheet at a predetermined position on the bottom plate 4 on the front side of the work table 1. Moreover, since the next transfer cannot be prepared while the transfer sheet is heated in close contact with the substrate by vacuum suction, the work efficiency is low.
For this reason, the present inventors have patented a transfer printing apparatus that improves thermal efficiency by reducing the opening of the hot plate, enables transfer printing on large-sized substrates, and improves work efficiency and work environment. It was introduced in Reference 2.

  This transfer printing apparatus is provided on the bottom surface of the left and right edges of a frame that has a pair of left and right guide rails that project from the left and right side plates to the front side, and on which inner and outer rails are formed, and a frame that surrounds the rubber sheet. A lower work frame arranged in the horizontal direction where the slide bearing rolls on the inner rail of the guide rail, and a slide bearing provided on the bottom surface of the left and right edges of the frame surrounding the rubber sheet roll on the outer rail of the guide rail. An upper work frame that moves and straddles the lower work frame, and a hot plate that can move up and down with a built-in heat source inside a heater panel that is in airtight contact with the lower work frame or the upper work frame in the storage position. Pass the vacuum exhaust pipe through the heater panel and between the heater panel and the rubber sheet to heat the lower work frame or upper work frame. It is equipped with an evacuation system that evacuates the sealed space that is generated when the panel is brought into airtight contact, and either the lower work frame or the upper work frame is inserted into the machine frame and stacked on the rubber sheet. The transfer sheet and the substrate to be printed are heated, and the sublimation dye of the transfer sheet is sublimated and transferred to the substrate.

JP 2000-325849 A JP 2003-137239 A

However, in the transfer device introduced in Patent Document 2, when the vacuum exhaust pipe is exposed between the heater panel and the rubber sheet through the heater panel, and the lower work frame or the upper work frame is brought into airtight contact with the heater panel. The sealed space generated in is evacuated.
Since the evacuation pipe was placed between the heater panel and the rubber sheet through the heater panel, an attempt to increase the evacuation speed would disturb the air flow and cause the transfer sheet placed on the substrate to be displaced. The printed pattern may be deformed after printing. For this reason, the exhaust speed cannot be increased, and there is a limit to improving the working efficiency. In addition, since the vacuum exhaust port is provided on the inner surface of the heater panel on the work frame side, the effective transfer area is inside the vacuum exhaust port of the heater panel, and the effective transfer area is smaller than the heater panel area. was there.

Further, the heater panel protrudes on both sides of the hot plate in the frontage direction, and the piston rods of the four contact air cylinders are fixed to the protruding portions, and the hot plate is disposed so as to be movable up and down with respect to the work frame in the storage state. ing.
Since four air cylinders are used, in order to move the hot plate up and down horizontally, they must be driven so that their operating amounts are completely equal. For this reason, not only high-precision air cylinders are required, but also careful maintenance management is required so that they always operate equally, which increases costs.
For this reason, in order to spread the transfer printing technique, it is necessary to improve so that transfer printing can be accurately performed on a large-sized substrate, and the cost of the apparatus itself is reduced by a simple mechanism.
The present invention has been devised to solve such a problem. By incorporating a work frame having two upper and lower stages into a drawer type, the opening of the hot plate is reduced, the thermal efficiency is improved, and the printing accuracy is improved. An object of the present invention is to provide a transfer printing apparatus capable of stably performing high-quality transfer printing at low cost.

  In order to achieve the object, the transfer printing apparatus of the present invention projects to the front side from the left and right side plates and has a machine frame having a pair of left and right guide rails in which an inner rail and an outer rail are formed, and a frame that surrounds a rubber sheet. The slide bearing provided on the bottom of the left and right edges of the frame and the lower work frame arranged in the horizontal direction where the slide bearing provided on the bottom of the left and right edges rolls on the inner rail of the guide rail, and the bottom of the left and right edges of the frame surrounding the rubber sheet Rolls on the outer rail of the guide rail, the upper work frame arranged across the lower work frame, and the heat source inside the heater panel that is in airtight contact with the lower work frame or the upper work frame at the storage position. And a hot plate that can be raised and lowered, and a hermetically sealed air generated when the lower work frame or the upper work frame is brought into airtight contact with the heater panel. A frame body that forms the lower work frame and the upper work frame is formed of a hollow body, and an exhaust port is formed on the inner surface of the hollow body or the rubber sheet. Either the work frame or the upper work frame is inserted into the machine frame, and the sublimation dye of the transfer sheet is heated by heating the transfer sheet and the printed material that are arranged on the rubber sheet. It is characterized by being sublimated and transferred to a substrate.

The hot plate is preferably lifted and lowered by a single air cylinder attached to a connecting support rod that is bridged so as to connect the left and right side plates.
In addition, an exhaust port is bored on the inner surface of the hollow body constituting the work frame, and a vacuum joint port is bored on the bottom surface of the hollow frame, and a vacuum that connects the vacuum joint port and the vacuum exhaust system. It is preferable that the joint is arranged to be movable up and down.
Further, a frame material in which a heat-resistant cloth is stretched on the upper part of each of the lower work frame and the upper work frame so as to cover the work surface of each work frame is provided for the frame constituting the lower work frame and the upper work frame. It is preferable that it is attached so that opening and closing is possible. A heat resistant sheet having air permeability may be provided on the inner surface of the heater panel.
The pull-out position and the storage position of the lower work frame and the upper work frame can be regulated by a raised portion or a protruding portion provided on the guide rail. In addition, in order to accurately detect the storage position, a position detection sensor for detecting the hand front end portion or the rear side end portion of the lower work frame and the upper work frame may be provided on the guide rail. The detection signal from the position detection sensor can be used for drive control of the hot plate lifting mechanism, heat source, and vacuum exhaust system.

  In the transfer printing apparatus of the present invention, the drawer-type work frame is provided in two upper and lower stages, so that the next transfer printing can be prepared on the other work frame while performing the transfer printing using the one work frame. Therefore, transfer printing can be repeated intermittently without waiting time, and the working efficiency is greatly improved. In addition, since the vacuum suction is performed through the hollow frame body or the exhaust port provided on the rubber sheet forming the lower work frame and the upper work frame, the airflow is not disturbed even if the suction speed is increased. A pattern with high printing accuracy can be obtained without deviation. Moreover, since the hot plate is moved up and down by one air cylinder, the hot plate is moved up and down stably. In addition, a heat-resistant sheet with air permeability is interposed between the heater panel and the heated object, so that the transfer sheet and printed material do not float when the hot plate is raised and lowered, and the printing pattern with excellent accuracy is stable. I can do it.

The transfer printing apparatus according to the present invention basically has a similar structure to the apparatus proposed in Patent Document 2. For example, as shown in the overall perspective view of FIG. 2, a lower work frame 20 and an upper work frame 30 are horizontally arranged on the machine frame 10 so as to be able to be drawn out. The hot plate 40 is disposed above the work frames 20 and 30 in the stored state.
The machine frame 10 includes side plates 11R and 11L that cover the side surfaces of the lower work frame 20 and the upper work frame 30, and guide rails 12R and 12L protrude forward. The front ends of the guide rails 12R and 12L are supported from below by the support columns 13R and 13L. Depending on the size of the transfer printing apparatus, in a transfer printing apparatus having a large frontage, one or a plurality of reinforcing struts may be provided between the left and right struts 13R and 13L as necessary.

The structures of the lower work frame 20 and the upper work frame 30 are shown in FIGS.
The guide rails 12R and 12L are provided with a rail (not shown) for running the lower work frame 20 on the inner side and a rail (not shown) for running both the upper work frames 30 on the outer side. Yes. A stopper (not shown) is fixed to the front end surfaces of the guide rails 12R and 12L to prevent the lower work frame 20 and the upper work frame 30 from being pulled out to the front side.
The lower work frame 20 surrounds a rubber sheet 21 with a rectangular frame 22. Slide bearings 24R and 24L for rolling the inner rails of the guide rails 12R and 12L are provided on the bottom surfaces of the edges 23R and 23L projecting on both sides of the frame 22, and the seal rubber 25 (FIG. 6) is provided on the upper surfaces of both sides of the frame 22. Is pasted. Further, a handle 26 for facilitating the drawing operation of the lower work frame 20 is fixed to the front side surface of the frame body 22.

Edges 23R and 23L of the frame 22 are inverted L-shaped, and a rubber sheet 21 and a support net 28 are sandwiched between a bracket 27 (FIG. 6) fixed to a side surface and an upper horizontal portion, and bolts, screws, The rubber sheet 21 and the support net 28 are fixed by a fixing tool 29 such as a rivet.
The rubber sheet 21 can be made of a soft elastic material such as silicone rubber, fluorine rubber, butyl rubber, or neoprene rubber. However, considering the usage pattern in which sublimation transfer is repeated intermittently at a temperature of 150 ° C. or higher, silicone having excellent heat resistance is used. Rubber and fluororubber are preferred. Moreover, you may laminate | stack the heat insulation cushioning material 21a on the rubber sheet 21 as needed.

Similarly to the lower work frame 20, the upper work frame 30 also surrounds the rubber sheet 31 (FIG. 6) with a rectangular frame body 32, and the edges 33 </ b> R and 33 </ b> L protrude from both sides of the frame body 32. The edges 33R and 33L are designed to have a height that takes into account the thickness of the work frames 20 and 30 because the upper work frame 30 is horizontally arranged in a state of straddling the lower work frame 20, and the guide rails 12R and 12L. Slide bearings 34R and 34L that roll on the outer rails are provided on the bottom surface, and a seal rubber 35 is attached to the top surface. A handle 36 for facilitating the drawing operation of the upper work frame 30 is also fixed to the front side surface of the frame body 32.
Similarly to the rubber sheet 21 of the lower work frame 20, the rubber sheet 31 is also supported from below by the support net 38 and is fixed to the edges 33 R and 33 L of the frame 32 by the fixing tool 39.

A connecting support rod 16 connecting the left and right side plates 11R and 11L is bridged above the work frames 20 and 30 in the stowed state, and one lifting air cylinder 51 for moving the hot plate 40 up and down on the connecting support rod 16 is provided. The hot plate 40 is fixed to the piston rod 52.
The hot plate 40 incorporates a heat source 41, and a heater panel 42 is provided on the surface facing the work frames 20 and 30 (FIG. 3). As the heat source 41, a far-infrared heater, a mica heater, or the like is used. However, it is preferable to use a mica heater in consideration of thermal responsiveness. The upper inner surface of the hot plate 40 is lined with a heat insulating material 45 in order to direct the heat from the heat source 41 to the heater panel 42. In order to reduce the temperature drop during the transfer, the thickness of the heater panel 42 is preferably 10 mm or more. In particular, considering the balance between thermal conductivity and heat storage, the thickness of the heater panel 42 is preferably 15 to 25 mm. As a material for forming the hot plate 40, it is preferable to use an aluminum alloy in consideration of thermal conductivity and weight.

  The heat source 41 is divided into predetermined areas according to the size of the heater panel 42, and a temperature detection sensor is provided for each block. The detection value from the temperature detection sensor is output to the heater control box 44, and the heat source 41 of each block is turned on / off by a command from the heater control box 44, whereby the heater panel 42 is heated with a predetermined temperature distribution.

In the transfer printing apparatus according to the present invention, as shown in FIG. 7, a frame material 62 having a heat-resistant cloth 61 stretched on the upper part of each of the lower work frame 20 and the upper work frame 30 is provided on the work surface of each work frame. Is attached to the frame constituting the work frame so as to be openable and closable.
Instead of the frame material 62 with the heat-resistant cloth 61 stretched, a heat-resistant sheet with high air permeability may be provided on the inner surface of the heater panel 42. By the action of the heat-resistant heat-resistant cloth / heat-resistant sheet having high air permeability, the transfer sheet and the substrate to be printed when the hot plate 40 is raised can be prevented, and the occurrence of printing misalignment can be suppressed. If the heat-resistant cloth is not interposed, when the hot plate 40 is raised, the transfer sheet and the printed material are lifted together with the hot plate 40, and printing misalignment is likely to occur. In the present invention, this point can also be improved.
The heat-resistant cloth is preferably a cloth woven with aromatic polyamide fibers. Silicon sponge or the like is used as the heat resistant sheet. Their thickness is preferably 0.1 mm or less in consideration of thermal conductivity.

  When the lifting air cylinder 51 is driven by the command from the control control box 53 and the piston rod 52 is extended, the heater panel 42 is translated downward and pressed against the frame bodies 22 and 32 of the work frames 20 and 30. At this time, since the seal rubbers 25 and 35 are interposed between the heater panel 42 and the frame bodies 22 and 32, the edge 42a of the heater panel 42 comes into airtight contact with the frame bodies 22 and 32, and the sealed space V (FIG. 8). Is formed.

In the transfer printing apparatus according to the present invention, as shown in FIG. 9, the frame bodies 22 and 32 forming the lower work frame 20 and the upper work frame 30 are constituted by hollow bodies, and the inner surfaces of the frame bodies 22 and 32 are formed. An exhaust port 56 is formed so that the hollow frame itself is used as an exhaust pipe (arrow in the figure). A vacuum joint port 57 is also drilled in the bottom surface of the frames 22 and 32, and the connection joint 58 and the vacuum exhaust pipe 59 for connecting the vacuum joint port 57 to the vacuum exhaust system are stored in the work frame 20 and An air cylinder 60 is attached to the lower part of 30 and is arranged so as to be movable up and down. Below the rubber sheet of the work frame surrounded by the frame, several cushioning sheets are laid as shown in FIG.
The vacuum exhaust pipe 61 is connected to an appropriate vacuum source, and vacuums the work frames 20 and 30 and the heater panel 42 according to a command from the control box 53. The size or number of exhaust ports 57 formed in the inner surfaces of the frame bodies 22 and 32 is the size of the work frames 20 and 30 so that the gap between the work frames 20 and 30 and the heater panel 42 is uniformly vacuumed. Change accordingly.

The storage positions of the work frames 20 and 30 are positioned with respect to the guide rails 12R and 12L by an appropriate position detection sensor. For example, a light emitting element is attached to the bottom surface on the front side of the edges 23R and 23L or the edges 33R and 33L, a light receiving element is attached to the upper surface of the guide rails 12R and 12L, and light from the light emitting element is detected by the light receiving element. The storage position of the frames 20 and 30 is determined. Or you may provide the position detection sensor which detects the front part or back part of the work frames 20 and 30 in the predetermined position on the guide rails 12R and 12L. A detection signal from the position detection sensor is output to the heater control box 44, the elevating mechanism 50, and the vacuum exhaust system, and is used to drive or stop driving the respective mechanisms.
Although the position of the drawn work frames 20 and 30 can be regulated by a stopper for preventing the dropout, the work frames 20 and 30 are preferably positioned by a raised portion (not shown) provided on the front upper surface of the guide rails 12R and 12L.

Since the transfer printing apparatus according to the present invention includes the upper and lower work frames 20 and 30, one work frame 20 or 30 is used for print transfer, and the other work frame 30 or 20 is used for the next print transfer. Can be used. That is, while the work frame 20 or 30 is used for print transfer, the next transfer work can be prepared on the rubber sheets 21 and 21 of the other work frame 30 or 20.
In the transfer printing work, either the lower work frame 20 or the upper work frame 30 is pulled out. In the following description, the case where the upper work frame 30 is pulled out and transfer printing is performed using the lower work frame 20 will be described (FIG. 4).

  The transfer sheet S and the printing material M are arranged on the rubber sheet 31 of the upper work frame 30 pulled out from the machine frame 10 to a predetermined position or on the rubber sheet 31 via the heat insulating cushion material 31. At this time, they are superposed so that the pattern surface to which the sublimable dye is applied in a predetermined printing pattern faces the substrate M. The transfer sheet S and the printing material M are fixed to each other so that no relative deviation occurs between the transfer sheet S and the printing material M. In some cases, the substrate M is covered with a heat-resistant cloth to prevent direct contact between the substrate M and the heater panel 42.

  When a coated metal plate with good thermal conductivity is used for the substrate M, the transfer sheet S can be heated via the substrate M, so that the transfer sheet S and the substrate M are arranged on the rubber sheet 21 in this order. Can do. When using a resin molded body having a low thermal conductivity, a coated ceramic board, a painted gypsum board, or the like for the printed material M, transfer it onto the printed material M in consideration of heat transfer from the heater panel 42 to the transfer sheet S. The sheets S are overlapped. If necessary, a sublimation dye transfer prevention sheet is sandwiched between the transfer sheet S and the rubber sheet 21 or the heater panel 42 to prevent the sublimation dye from coming off from the opposite side of the pattern surface.

In the other lower work frame 20, the transfer sheet S and the substrate M are thus overlapped and arranged on the rubber sheet 21, and are further covered with a frame material covered with a heat resistant cloth. In a predetermined position. When the hot plate 40 is lowered toward the rubber sheet 21, the edge 42 a of the heater panel 42 comes into airtight contact with the upper surface of the frame 22 through the seal rubber 25, and the transfer sheet S and the substrate M are held in the sealed space V. The
Next, the evacuation system is driven, and the sealed space V is evacuated through the evacuation pipe 59. As the sealed space V is depressurized, the rubber sheet 21 is elastically deformed and attracted to the heater panel 42 side. Due to the elastic deformation of the rubber sheet 21, the transfer sheet S and the printing material M are pressed against the heater panel 42 in a close contact state.

  The atmospheric pressure in the sealed space V is measured with an appropriate pressure gauge, and when the sealed space V is depressurized to a predetermined level, a pressure detection value is output from the pressure gauge to the heater control box 44 as a control signal. In the heater control box 44, the transfer sheet S and the substrate M are heated via the heater panel 42. As a result, the sublimable dye sublimates from the pattern surface and shifts to the substrate M. When a coated metal plate having a resin coating film on the surface, a coated ceramic board, a painted gypsum board, or the like is used for the object to be printed M, a sublimable dye penetrates into the resin coating film to form a dye dyed layer. When a woven fabric, a resin molded body or the like having good dyeability is used for the printing material M, the woven fabric, the resin molded body, or the like is directly dyed with a sublimable dye. By the sublimation transfer of the sublimation dye, the pattern surface is transferred to the printing material M, and a printing pattern having a predetermined pattern is applied to the printing material M.

After completion of transfer printing, the vacuum exhaust system is turned off and the hot plate 40 is raised. Next, the upper work frame 30 in which the transfer sheet S and the printing material M are arranged on the rubber sheet 31 in a predetermined positional relationship is pushed into the machine frame 10, and the lower work frame 20 after the transfer printing is finished is pulled out from the machine frame 10.
Then, similarly to the previous transfer printing, the lifting mechanism 50 is driven, and the transfer sheet S and the substrate M are held in the sealed space V. Thereafter, after the sealed space V is depressurized by an evacuation system, the transfer sheet S and the substrate M are heated via the heater panel 42, and the substrate M is transferred and printed.

As described above, since the work frames 20 and 30 are provided in the upper and lower stages by the drawer method, the other work frame 20 housed in the machine frame 10 while proceeding with the preparation of transfer printing with one work frame 30. Thus, the printing material M can be transferred and printed. Therefore, there is no waiting time for preparation of transfer printing as in the conventional transfer printing apparatus (FIG. 1), and the transfer printing work can proceed efficiently.
Further, since the transfer printing is performed while the work frames 20 and 30 are alternately pulled out or stored in the machine frame 10, the hot plate 40 is not opened to the atmosphere. Therefore, the rate at which the heat from the heat source 41 is consumed for transfer printing is significantly increased, and the thermal efficiency is improved. Moreover, since the rubber sheets 21 and 31 are arranged in two upper and lower stages, even if one work frame 20 or 30 is pulled out, the rubber sheets 31 and 21 of the other work frame 30 or 20 are attached to the hot plate 40. Suppresses heat dissipation. This also improves the thermal efficiency.

  Furthermore, since the vacuum suction is performed through the exhaust port provided in the hollow frame body forming the lower work frame 20 and the upper work frame 30, the transfer sheet is displaced because the airflow is not disturbed even if the suction speed is increased. Therefore, a pattern with high printing accuracy can be obtained. In addition, since the hot plate is lifted and lowered by one air cylinder, the hot plate lifting and lowering operation is stabilized. Moreover, since a heat-resistant sheet with air permeability is interposed between the heater panel and the object to be heated, the transfer sheet and the printed material do not float when the hot plate is raised and lowered, and the printing pattern with excellent accuracy is stable. Is obtained.

Schematic perspective view of the transfer printing apparatus previously proposed by the present inventors Schematic perspective view of a transfer printing apparatus according to the present invention Front view of the transfer printing device Side view of the transfer printing device Partial plan view of the transfer printing device Cross-sectional view of main parts of the transfer printing device Schematic perspective view of the transfer printing device when the heat-resistant cloth is opened Cross-sectional view of main parts during transfer printing Sectional drawing explaining the connection structure to the vacuum exhaust system of this invention transfer printing apparatus

Explanation of symbols

10: Machine frame 12R, 12L: Guide rail 16: Connection support rod
20: Lower work frame 30: Upper work frame
21, 31: Rubber sheet 22, 32: Frame body 25, 35: Seal rubber
28, 38: Support net
40: Hot plate 41: Heat source 42: Heater panel
44: Heater control box 50: Elevating mechanism 51: Air cylinder for contact 52: Piston rod
56: Exhaust port 57: Vacuum joint port 58: Connection joint 59: Vacuum exhaust pipe
60: Air cylinder 61: Heat-resistant cloth 62: Frame material
S: Transfer sheet M: Printed material V: Sealed space

Claims (7)

  Projecting from the left and right side plates to the front side, a machine frame with a pair of left and right guide rails on which inner and outer rails are formed, and a slide bearing provided on the bottom surface of the left and right edges of the frame surrounding the rubber sheet, A lower work frame horizontally arranged to roll on the inner rail, and slide bearings provided on the bottom surfaces of the left and right edges of the frame surrounding the rubber sheet roll on the outer rail of the guide rail to lower the lower work frame. An upper work frame disposed across the upper work frame, a lower work frame in the storage position or a hot plate with a built-in heat source inside a heater panel that is in airtight contact with the upper work frame, and the lower work frame or An evacuation system for evacuating the sealed space generated when the upper work frame is brought into airtight contact with the heater panel. The frame that forms the frame and the upper work frame is formed of a hollow body, and an exhaust port is bored on the inner surface of the hollow body or on the rubber sheet, and either the lower work frame or the upper work frame is the machine frame. Transfer sheet inserted inside and superimposed on a rubber sheet. Sublimation dye on the transfer sheet is sublimated and transferred to the substrate by heating the substrate. apparatus.   The transfer printing apparatus according to claim 1, wherein a connecting support rod connecting the left and right side plates is bridged, and one air cylinder for moving the hot plate up and down is attached to the connecting support rod.   An exhaust port is bored on the inner surface of the hollow body that constitutes the frame that forms the work frame, a vacuum joint port is bored on the bottom surface of the hollow frame body, and a vacuum joint that connects the vacuum joint port and the vacuum exhaust system is provided. The transfer printing apparatus according to claim 1, wherein the transfer printing apparatus is arranged to be movable up and down.   A frame material in which a heat-resistant cloth is stretched on the upper part of each of the lower work frame and the upper work frame so as to cover the work surface of each work frame can be opened and closed with respect to the frames constituting the lower work frame and the upper work frame. The transfer printing apparatus according to claim 1, which is attached to the printer.   The transfer printing apparatus according to claim 1, wherein a heat-resistant sheet having air permeability is provided on the inner surface of the heater panel.   The transfer printing apparatus according to any one of claims 1 to 5, wherein a drawing position of the lower work frame or the upper work frame is regulated by a protruding portion or a protruding portion provided on the guide rail.   A position detection sensor for detecting the front end or rear side end of the lower work frame and the upper work frame is provided on the guide rail. Based on the detection signal from the position detection sensor, the hot plate lifting mechanism, heat source, vacuum The transfer printing apparatus according to claim 1, wherein the exhaust system is driven and controlled.

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