JP3656994B2 - Vacuum printing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vacuum printing apparatus for printing, for example, a work having holes or gaps on the surface of a printed wiring board or the like, and in particular, it is possible to continuously print a solvent type resin or a photocurable resin in a vacuum atmosphere. About what you did.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, for example, a technique for smoothing a surface by printing ink on a printed wiring board having a hole on the surface and filling the hole is provided. In this case, as described in, for example, Japanese Patent No. 3198273, printing is performed in a vacuum atmosphere in order to prevent the unfilled portion of the resin from remaining in holes such as through holes and non-through holes. After being performed, the degree of vacuum may be reduced, and the resin may be filled to the back of the hole due to the differential pressure. When printing on a printed wiring board in a vacuum atmosphere in this way, for example, a resin for printing several to several tens of times on a stencil having an opening formed at a required position in a sealed chamber. The operation of supplying and superimposing the stencil on the printed circuit board and rubbing the resin with a squeegee to perform printing is repeated.
[0003]
[Problems to be solved by the invention]
By the way, as for the hole filling resin used when printing on a printed wiring board in a vacuum atmosphere as described above, a resin containing a volatile substance such as a solvent, or a photo-curing resin has been used so far. Etc. have been avoided. This is because, when such a resin is used in a vacuum atmosphere, for example, in the case of a solvent-type resin, volatile substances and the like are released into the vacuum atmosphere as the pressure decreases, and the viscosity of the resin increases. If continuous printing becomes impossible, the vacuum level in the chamber is lowered and a burden is placed on the exhaust system, or the concentration of volatile substances in the vacuum chamber increases, it is carried in. This is because there is a problem of affecting the printed wiring board and the applied printed matter. Further, in the case of a photo-curable resin, there is a problem that continuous printing is impossible because curing due to oxygen deficiency of the curing inhibitor occurs.
[0004]
Therefore, when such a resin is used, the resin is supplied in an amount necessary for one printing, and the vacuum chamber is opened every time printing is performed, so that the surplus resin remaining in the printing machine can be quickly removed. It is conceivable to solve the above problem by removing them. However, the printed wiring board printing machine includes, for example, a resin supply unit for supplying resin onto the substrate via a stencil, and a squeegee running unit for rubbing the supplied resin from the stencil to perform hole filling printing on the substrate. Etc. and is large, the volume of the vacuum chamber for accommodating such a large printing apparatus must be considerably increased. If the volume of the chamber is large in this way, the chamber is opened to remove excess resin, and then the time required for exhausting to form a vacuum atmosphere again in a sealed state becomes longer, and the productivity deteriorates. There is.
[0005]
Because of such circumstances, conventionally, solvent-type resins and photo-curable resins cannot be used as printing resins, and the selection of resins has been restricted.
The present invention has been made in view of the above circumstances. For example, a resin that contains a volatile substance such as a solvent or a photo-curable resin can be printed in a vacuum atmosphere, and is excellent in productivity. The object is to provide an apparatus.
[0006]
[Means for Solving the Problems]
The invention of claim 1 for solving the above problem is a vacuum printing apparatus for filling a resin in an opening or a gap existing on a work surface in a vacuum atmosphere, for printing the resin on the work surface. A printing press provided with a resin supply mechanism and a squeegee, a vacuum printing chamber that houses the printing press, has an opening through which the workpiece can be taken in and out, and is evacuated by an exhaust device, and the vacuum printing chamber A resin discharge chamber provided with doors that can be connected to each other through the communication opening and can be opened to the atmosphere, a resin recovery position for recovering excess resin remaining after printing in the vacuum printing chamber, and discharging the excess resin to the resin It is characterized in that it is provided with a resin discharging device that can move between a resin discharging position for discharging to the outside through the chamber.
[0007]
Invention of Claim 2 is the vacuum printing apparatus of Claim 1, Comprising: The said resin discharge | emission apparatus is a resin collection | recovery table which can form the resin collection | recovery surface continuous with the printing surface when printing on the said workpiece | work. And a squeegee adhering resin removing mechanism for collecting the resin adhering to the squeegee after printing.
[0008]
A third aspect of the present invention is the vacuum printing apparatus according to the first or second aspect, wherein the resin discharge chamber is formed so as to overlap an upper wall portion of the vacuum printing chamber, and the resin discharge device is It can be moved up and down by a lifting device below the communication opening, and the resin discharging device is hermetically closed when the resin discharging device is lifted by the lifting device and moved to the resin discharging position.
[0009]
Invention of Claim 4 is the vacuum printing apparatus in any one of Claim 1 thru | or 3, Comprising: The exhaust apparatus which exhausts inside with the said door closed is connected to the said resin discharge chamber, The present invention is characterized in that the resin discharge chamber can be exhausted in a state where the communication opening is closed.
[0010]
Operation and effect of the invention
According to the first aspect of the present invention, first, the work is carried into the vacuum printing chamber from the opening, and the vacuum printing chamber is set to a vacuum degree suitable for printing by the exhaust device. Thereafter, the resin supply mechanism supplies a necessary amount of resin onto the workpiece or on the stencil layered on the workpiece, and rubs with a squeegee to embed the resin in the holes or gaps opened on the workpiece surface. At this time, the resin discharging device is disposed at a resin recovery position for recovering excess resin. When printing is completed, the work is carried out of the vacuum printing chamber through the opening, and the excess resin remaining in the vacuum printing chamber is recovered by the resin discharging device, and the resin discharging device is discharged from the resin recovery position to the resin discharging chamber. Move to position. Then, the communication opening is closed so that the vacuum printing chamber and the resin discharge chamber are hermetically shut off, the door of the resin discharge chamber is opened while the vacuum printing chamber is kept in a vacuum state, and the excess of the resin discharge device Remove the resin. When the resin is removed, the door of the resin discharge chamber is closed again and the communication opening is opened to return the resin discharge device to the resin recovery position. On the other hand, since the resin is printed in the hole opened on the surface of the work carried out from the vacuum printing chamber, when it is taken out into the atmosphere, the resin is pushed into the hole due to the pressure difference, and the gap is formed. The resin is filled without leaving.
[0011]
As described above, according to the first aspect of the present invention, the excess resin in the vacuum printing chamber can be quickly recovered by the resin discharging device, and can be discharged outside through the resin discharging chamber without opening the vacuum printing chamber to the atmosphere. Therefore, if the excess resin in the vacuum printing chamber is removed each time printing is performed on the workpiece, it becomes possible to use solvent-type resins and photo-curing resins that could not be used before, and use them for printing. It has an excellent effect of expanding the choice of resin. In addition, since the resin discharge chamber is provided, it is not necessary to exhaust the entire vacuum printing chamber every time the resin is discharged.
[0012]
Further, as in the invention of claim 2, surplus resin on the work rubbed by the squeegee is provided by providing a resin collection table capable of forming a resin collection surface that is continuous with the printing surface when the work is printed. Finally, it will be collected on the resin collection table. Further, the resin adhering to the squeegee is collected by the squeegee adhering resin removing mechanism. In this way, excess resin in the vacuum printing chamber can be reliably recovered and discharged to the outside.
[0013]
According to a third aspect of the present invention, the resin discharge chamber is formed so as to overlap the upper wall of the vacuum printing chamber, and the communication opening is moved to the resin discharge position when the resin discharge device is raised by the lifting device. Since the resin discharge device is hermetically closed by this, there is no need to provide a separate door for closing, the device configuration is simplified and the degree of design freedom is increased, and the entire device is manufactured. There is an excellent effect that the cost can be reduced.
[0014]
Furthermore, if the resin discharge chamber can be evacuated as in the invention of claim 4, air does not flow into the vacuum printing chamber when the communication opening is opened. The burden can be reduced.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment embodying the present invention will be described with reference to FIGS.
The vacuum printing apparatus 10 of this embodiment is for filling a non-through hole of a printed wiring board P having a non-through hole such as a via hole, for example, with a solvent-type resin through, for example, a stencil 20 and performing printing. The printing chamber 11 can communicate with the vacuum printing chamber 11 and can be communicated with the work supply chamber 12 for carrying the printed wiring board P into and out of the vacuum printing chamber 11. A resin discharge chamber 13 for discharging excess resin from the vacuum printing chamber 11 to the outside is provided.
[0016]
As shown in FIG. 10, the vacuum printing chamber 11 includes a printing press storage chamber 14 that is a box-shaped space in which a printing press 40 and a resin discharge device 50 to be described later are stored, and a side surface of the printing press storage chamber 14. The transfer chamber 15 communicates with a part. A rectangular opening 16 for loading / unloading the printed wiring board P into / from the vacuum printing chamber 11 is provided in a part of the upper surface wall portion 15A of the transfer chamber 15 from below by a printing table 21 described later. It can be closed. Further, a flat box-shaped lid 17 having an open lower surface is provided above the transfer chamber 15 so as to close the opening 16 from above, and the lid 17 and the printing table 20 can be opened. However, the workpiece supply chamber 12 is formed by airtightly closing the opening 16.
[0017]
On the other hand, as shown in FIG. 1, a rectangular communication opening 18 is formed in a part of the upper wall 14 </ b> A of the printing press storage chamber 14. It can be closed. Further, a box-shaped door 19 having an open lower surface is provided above the printing press storage chamber 14 so as to close the communication opening 18 from above. The door 19 and the resin collection table 51 are openable. The resin discharge chamber 13 is formed by closing the communication opening 18 in an airtight manner.
[0018]
In the vacuum printing chamber 11, a pair of guide rails 24, 24 are installed horizontally and in parallel from the printing press storage chamber 14 to the transfer chamber 15 (see FIG. 10).
[0019]
The printing table 21 is rectangular and has a flat plate shape, and a gasket 22 is fitted over the entire periphery in the vicinity of the edge portion on the upper surface thereof. In addition, concave connection pieces 23 connected to the above-described guide rails 24, 24 are provided at the four corners of the lower surface. Thereby, when the printing table 21 is driven by a driving mechanism (not shown), the connecting piece 23 is guided by the guide rail 24 so that the printing table 21 can move between the transport chamber 15 and the printing press storage chamber 14. It has become.
[0020]
A lifting device 30 for the printing table 21 is installed below the opening 16 in the transfer chamber 15. The elevating device 30 can be raised and lowered by driving a drive motor (not shown), and a lifting cylinder 32 installed on a cylinder mount 31; and a support plate 33 that can be raised and lowered by bringing the lifting cylinder 32 into contact with the lower surface. It has. Further, four loose insertion holes are formed at the same position in the vertical direction on the cylinder mount 31 and the support plate 33, and four lifting rods 34 are loosely inserted into these loose insertion holes. Further, the portions of these lifting rods 34 protruding above the support plate 33 are fitted into the compression springs 35, and the upper ends thereof are horizontal plate-like shapes on which the printing table 21 is placed. It is fixed to the printing table base 36.
[0021]
Further, the lifting device 30 is set so that the printing table mount 36 is separated from the lower surface of the printing table 21 when the lifting cylinder 32 is at the lowest position (see FIG. 10). As a result, the connecting piece 23 of the printing table 21 is connected to the guide rail 24 and can move along the guide rail 24 in the lateral direction in FIG. When the lifting cylinder 32 is at the highest position, the upper surface of the printing table 21 placed on the printing table base 36 is in close contact with the lower surface of the peripheral edge of the opening 16 via the gasket 22. 16 is closed from below.
[0022]
The printing machine 40 accommodated in the printing machine storage chamber 14 includes a resin supply device 41 for supplying printing resin onto the stencil 20 that is stacked on the printed wiring board P and has an opening formed at a required position. A squeegee 42 that rubs the supplied resin from the stencil 20 and a squeegee drive mechanism (not shown) that holds the squeegee 42 in a suspended state and is movable in the horizontal and vertical directions in FIG. ing. When the squeegee driving mechanism is driven from the state shown in FIG. 1, the squeegee 42 descends and rubs against the upper surface of the stencil 20. As a result, the resin supplied to the upper surface of the stencil 20 is formed at a predetermined position. Printing is performed by being extruded onto the printed wiring board P from the opening of the stencil plate 20.
[0023]
Similarly, the resin discharge device 50 accommodated in the printing press accommodating chamber 14 includes a resin recovery table 51 and a squeegee adhesion resin removal device 52. As shown in FIG. 1, the resin recovery table 51 is provided with a convex table 54 having a resin recovery surface 54 </ b> A having the same height as the upper surface of the stencil 20 on a part of the upper surface of the flat base 53. In the gap between the table 54 and the stencil 20 disposed at the printing position, the stencil 20 and the resin recovery surface 54A of the table 54 have an L-shaped cross section for making a continuous plane. A sub-table 55 is provided. Further, a gasket 56 is fitted around the entire periphery of the edge of the upper surface of the base 53.
[0024]
On the other hand, the squeegee adhering resin removing device 52 includes an elongated box-shaped collection box 57 having an open upper surface, and a pair of elongated spatulas 58 and 58 provided in the vicinity of the upper ends of the opposed surfaces of the collection box 57 in the longitudinal direction. Have The distance between the pair of spatulas 58 and 58 can be adjusted by a driving mechanism (not shown), and is always set to be slightly wider than the thickness of the squeegee 42. The squeegee adhesion resin removing device 52 is fixed to the upper surface of the base 53 of the resin recovery table 51 as shown in FIG.
[0025]
Further, on the lower surface side of the resin collection table 51, there are provided a moving device 60 that can move the resin collection table 51 in the left-right direction in FIG. 1 and an elevator device 61 that can also move the resin collection table 51 up and down. Yes. The elevating device 61 includes an elevating cylinder 62 that is driven by a drive motor (not shown). A support plate 63 that is brought into contact with the lower surface of the elevating cylinder 62 is moved up and down by the elevating cylinder 62, thereby The moving device 60 fixed on the upper surface and the resin recovery table 51 fixed above the moving device 60 can be moved up and down. Note that elevating rods 64 are fixed to the four corners on the lower surface side of the support plate 63, and elevate as the elevating cylinder 62 moves.
[0026]
The vacuum printing chamber 11, the workpiece supply chamber 12, and the resin discharge chamber 13 are connected to an exhaust device (not shown) including a vacuum pump, a switching valve, an exhaust hose, and the like. Thus, the vacuum printing chamber 11, the workpiece supply chamber 12, or the resin discharge chamber 13 can be selectively evacuated, and air is introduced into the workpiece supply chamber 12 or the resin discharge chamber 13 by opening the air supply valve. Be able to.
[0027]
Now, this embodiment is the above structure, and the effect | action is demonstrated next.
FIG. 1 shows a state in which printing is started via a stencil 20 on a printed wiring board P arranged at a printing position, for example. The vacuum printing chamber 11 is hermetically sealed by closing the opening 16 with a lid 17 and closing the communication opening 18 with a door 19, and is kept in a vacuum. Further, the resin discharging device 50 is disposed at a resin recovery position where the resin recovery table 51 forms a resin recovery surface 54A continuous with the upper surface of the stencil 20.
[0028]
(I) Supply and printing of solvent type resin First, the solvent type resin is applied onto the stencil plate 20 from the resin supply device 41 (see FIG. 1). Then, by driving the squeegee driving mechanism, the squeegee 42 is moved so as to rub on the stencil plate 20 (see FIG. 2), and the resin is printed in the holes of the printed wiring board P. Even when such a printing process is executed, the via hole of the printed wiring board P is fine, and therefore the resin is generally not completely filled up to the innermost part of the via hole.
[0029]
(Ii) After printing the printed circuit board P by moving the squeegee 42 to the end of the surplus resin collection stencil 20, the squeegee 42 is further moved from the sub table 55 to the resin collection surface 54A of the resin collection table 51 (FIG. 3). reference). Thereby, surplus resin remaining on the stencil 20 after printing is collected on the resin recovery surface 54A of the table 54. Further, the squeegee driving mechanism raises the squeegee 42 once, moves it to the left in FIG. 3, and then lowers it to insert it between the pair of spatulas 58, 58 of the collection box 57. When the squeegee 42 is inserted to a predetermined position, the pair of spatulas 58 and 58 are brought close to each other by a driving mechanism (not shown) and brought into contact with the squeegee 42. Thereafter, when the squeegee 42 is slowly raised (see FIG. 4), surplus resin adhering to the squeegee 42 is removed by the spatula 58, 58. The squeegee 42 from which the excess resin has been removed is returned to the position before the start of printing by the squeegee driving mechanism.
[0030]
(Iii) Excess resin discharge Next, the moving device 60 of the resin discharging device 50 is driven to move the resin discharging device 50 to the left side in FIG. 5, and the lifting device 61 is further driven to raise (see FIG. 5). When the resin discharge device 50 is raised to the uppermost position (see FIG. 6), the upper surface of the resin collection table 53 is pressed against the periphery of the communication opening 18 and is airtightly closed by the gasket 56 (the resin discharge position of the present invention). ). Thereafter, the air supply valve of the resin discharge chamber 13 is opened to make the inside equal to the atmospheric pressure, the door 19 is opened, and the resin discharge chamber 13 is released to the atmosphere (see FIG. 7). Even when the door 19 is thus opened, the communication opening 18 that allows the vacuum printing chamber 11 and the resin discharge chamber 13 to communicate with each other is closed by the resin recovery table 51 of the resin discharge device 50. There is no release to the atmosphere. Then, the resin on the resin collection table 51 and the resin adhering to the spatula 58, 58 are removed.
[0031]
When the recovered excess resin is removed from the resin discharge chamber 13 in this way, the door 19 is closed again, the resin discharge chamber 13 is closed airtight, and the degree of vacuum is the same as that of the vacuum printing chamber 11 by the exhaust device. . Thereafter, the resin discharge device 50 is lowered (see FIG. 9) and moved in the horizontal direction to return to the resin recovery position in the vacuum printing chamber 11.
[0032]
(Iv) Carrying out and carrying in the printed wiring board While the steps (ii) to (iii) are in progress, the printed wiring board P that has been printed is moved along the guide rail 24 on the printed table 21. This is moved into the transfer chamber 15. Then, the printing table 21 is stopped at a predetermined position below the opening 16, and the lifting device 30 is lifted to be brought into pressure contact with the lower surface of the upper surface wall portion 15 </ b> A of the transfer chamber 15. As a result, the space between the vacuum printing chamber 11 and the workpiece supply chamber 12 is airtightly closed.
[0033]
Next, the air supply valve of the workpiece supply chamber 12 is opened to make the inside equal to the atmospheric pressure, the lid 17 is opened, and the printed wiring board P after printing is taken out. When the printed wiring board P is exposed to atmospheric pressure, even if the resin is filled partway through the via hole and an unfilled part remains in the back, the pressure difference between the atmospheric pressure and the unfilled part does not. The resin is also pushed into the filling portion.
[0034]
Then, a new printed wiring board P and a stencil 20 overlapped thereon are placed on the printing table 21, the lid 17 is closed, and the work supply chamber 12 is set to a degree of vacuum equivalent to that in the vacuum printing chamber 11 by the exhaust device. Then, the next printed wiring board P is supplied into the vacuum printing chamber 11.
[0035]
As described above, according to the vacuum printing apparatus 10 of the present embodiment, the excess resin in the vacuum printing chamber 11 is quickly collected by the resin discharge device 50, and the resin is not opened to the vacuum printing chamber 11 to the atmosphere. It can be discharged outside through the discharge chamber 13. Therefore, if the excess resin is discharged every time printing is performed, it is possible to use solvent-type resins and photo-curing resins that could not be used conventionally, and resins having various characteristics depending on the application. There is an excellent effect of being selectable. In particular, in the present embodiment, the resin discharge chamber 13 is evacuated before the communication opening 18 is opened by moving the resin discharge device 50, so that the resin discharge chamber 13 enters the vacuum printing chamber 11. The inside of the vacuum printing chamber 11 can be maintained in a high vacuum state without air flowing in. As a result, it is not necessary to evacuate the large-capacity vacuum printing chamber 11 each time the printed wiring board P is printed, and even if evacuated, it is possible to always maintain a high vacuum state by evacuating only the small-capacity resin discharge chamber 13. The time required for exhaust is shortened, and the productivity is excellent.
[0036]
In addition, according to the present invention, the communication opening 18 between the vacuum printing chamber 11 and the resin discharge chamber 13 is configured to be opened and closed by a resin discharge device 50 for discharging the resin. There is no need to bother to provide a partition door or an opening / closing door, and the manufacturing cost of the device can be reduced by simplifying the device and increasing the degree of design freedom.
[0037]
<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention, and further, within the scope not departing from the gist of the invention other than the following. Various modifications can be made.
[0038]
(1) In the above embodiment, an example in which the solvent type resin is filled in the via hole of the printed wiring board P has been described. However, the present invention is not limited to this. For example, a resin is used for resin-sealing an electronic component mounted on the printed wiring board. It can also be applied when printing. Even in this case, the resin can be effectively filled in the openings and gaps existing on the surface between the printed wiring board and the electronic component or between the electronic components. Further, the resin to be filled may be any physical or electrical property resin. For example, it can be applied when a photo-curing resin is filled.
[0039]
(2) In the above embodiment, the exhaust device is connected to the resin discharge chamber 13. However, if the volume is sufficiently smaller than that of the vacuum printing chamber 11, the exhaust can be omitted. Even when an exhaust device is connected to the resin discharge chamber 13, it may be switched by a switching valve in common with a vacuum pump for exhausting the vacuum printing chamber 11, or the vacuum printing chamber 11 and the resin discharge chamber. 13 may be evacuated by a dedicated vacuum pump.
[0040]
(3) In the above embodiment, after the printed wiring board P is printed in a vacuum atmosphere, the printed wiring board P is unloaded from the work supply chamber 12 and exposed to the atmospheric pressure, whereby the pressure difference between the atmospheric pressure and the unfilled portion is obtained. However, the present invention is not limited to this, and a pressure difference may be generated by changing the degree of vacuum in the vacuum printing chamber to fill the resin. For example, an air supply / exhaust device is connected to the vacuum printing chamber 11, and after printing on the workpiece, the air supply valve of the vacuum printing chamber 11 is opened to temporarily reduce the internal vacuum, and the pressure difference causes resin Push in filling. In this case, if the degree of vacuum is increased again, the resin can be printed again by the amount reduced in volume by indentation filling. Further, since the degree of vacuum once lowered does not reach atmospheric pressure, it does not require much exhaust time when the degree of vacuum is increased again.
[Brief description of the drawings]
FIG. 1 is a schematic vertical sectional view of a side surface side of a vacuum printing apparatus according to an embodiment of the present invention (printing start state).
FIG. 2 is a schematic cross-sectional view of the side surface side of the vacuum printing apparatus (in the middle of printing)
FIG. 3 is a schematic sectional view of the side surface side of the vacuum printing apparatus (printing completed state).
FIG. 4 is a schematic sectional view of the side surface of the vacuum printing apparatus (resin recovery state).
FIG. 5 is a schematic cross-sectional view of the same side of the vacuum printing device (moving state of the resin discharging device)
[Fig. 6]
Similarly, a schematic cross-sectional view of the side of the vacuum printing device (with the resin discharge device in the resin discharge position)
FIG. 7 is a schematic cross-sectional view of the side surface side of the vacuum printing apparatus (with the door open).
FIG. 8 is a schematic cross-sectional view of the side surface side of the vacuum printing apparatus (with excess resin removed).
FIG. 9 is a schematic cross-sectional view of the side surface side of the vacuum printing apparatus (resin discharging apparatus moving state).
FIG. 10 is a schematic vertical sectional view of the front side of the vacuum printing apparatus.
DESCRIPTION OF SYMBOLS 10 ... Vacuum printer 11 ... Vacuum printing chamber 13 ... Resin discharge chamber 14A ... Upper surface wall part 16 ... Opening part 18 ... Communication opening part 19 ... Door 20 ... Stencil plate 21 ... Printing table 40 ... Printing machine 41 ... Resin supply mechanism 42 ... Squeegee 50 ... resin discharging device 51 ... resin recovery table 52 ... squeegee adhering resin removing device 54A ... resin recovery surface 61 ... lifting device

Claims (4)

A vacuum printing device for filling resin into openings and gaps existing on the workpiece surface in a vacuum atmosphere,
A printing machine including a resin supply mechanism and a squeegee for printing the resin on the work surface;
A vacuum printing chamber that houses this printing machine and has an opening through which the work can be taken in and out and is exhausted by an exhaust device;
A resin discharge chamber provided with a door that can be connected to the vacuum printing chamber through the communication opening and releasable to the atmosphere;
A resin discharge device capable of moving between a resin recovery position for recovering surplus resin remaining after printing in the vacuum printing chamber and a resin discharge position for discharging the surplus resin to the outside through the resin discharge chamber. Vacuum printing equipment. The resin discharging device includes a resin recovery table capable of forming a resin recovery surface continuous with a print surface when printing on the workpiece, and a squeegee-attached resin removal mechanism for recovering the resin attached to the squeegee after printing. The vacuum printing apparatus according to claim 1, further comprising: The resin discharge chamber is formed so as to overlap the upper wall portion of the vacuum printing chamber, and the resin discharge device can be moved up and down by the lifting device below the communication opening, and the resin discharging device is moved by the lifting device. 3. The vacuum printing apparatus according to claim 1, wherein the communication opening is airtightly closed when the resin is moved up to the resin discharge position. 4. The resin discharge chamber is connected to an exhaust device that exhausts air with the door closed, and is configured to be able to exhaust the resin discharge chamber with the communication opening closed. The vacuum printing apparatus according to any one of claims 1 to 3.

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