JP2016221686A - Painting device and method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a novel painting device and painting method, capable of applying preferable seal property, to a work room which is formed by making an opening end of a first chamber member and an opening end of a second chamber member abut, without being restricted by thickness of a used film.SOLUTION: An opening end of a first chamber member 2 and an opening end of a second chamber member 3 are made abut, for forming a closed work room S, in which the second chamber member 3 is positioned to a prescribed height, and the first chamber member 2 is raised, and the opening end of the first chamber member 2 is pressed to the opening end of the second chamber member 3.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a painting apparatus and a painting method for coating a film to be transferred.

  2. Description of the Related Art Conventionally, a painting device such as a thermal transfer device has been used to apply a pattern such as a pattern or a character to a transfer object having various three-dimensional shapes such as a home appliance, a cosmetic container, and an ornament (for example, the following patents) Reference 1).

JP 2011-126263 A

  By the way, in the painting apparatus (thermal transfer apparatus) disclosed in Patent Document 1, a lower chamber member (hereinafter referred to as “first chamber member”) that opens upward, and an opening downward. An upper chamber member (hereinafter referred to as a “second chamber member”) that lowers the second chamber member toward the first chamber member, and the opening end of the first chamber member A closed space (hereinafter referred to as “work chamber”) is formed by abutting the open end of the second chamber member.

  This working chamber needs to have sufficient hermeticity so that no leakage occurs during decompression or when steam is supplied.

  In securing the sealing performance of the working chamber, for example, when the second chamber member is lowered and the opening end of the first chamber member and the opening end of the second chamber member are abutted with each other, A means for applying a considerable downward force to the chamber member so that the open end of the second chamber member is pressed against the open end of the first chamber member is conceivable.

  However, when the opening end of the second chamber member is brought into pressure contact with the opening end of the first chamber member by applying a considerable downward force to the second chamber member, the first chamber member disengages the first chamber member from the first chamber member. An upward drag is generated towards the two-chamber member. Since this upward drag exerts a considerable burden on the frame that supports the first chamber member, it is necessary to give the frame a rigidity that can resist the drag. However, if rigidity is given to the frame, the apparatus becomes large and expensive. In addition, the working space is narrowed.

  Therefore, in the conventional painting apparatus, a means is provided in which a flange is provided at the open end of each chamber member, and the butted flanges are clamped together by a clamp or the like.

  However, when the butted flanges are clamped by the clamp, it is necessary to set the movable range of the clamp fairly precisely. In this type of painting apparatus, the working chamber is divided into two parts by interposing a film between the first chamber member and the second chamber member. When it has the above thickness, the distance of the flanges which interpose the film spreads beyond the movable range of the clamp, and as a result, the bulky flange cannot be clamped by the clamp.

  The present invention has been completed in view of the above technical problem, and is used for a working chamber formed by abutting the opening end of the first chamber member and the opening end of the second chamber member. It is an object of the present invention to provide a novel painting apparatus and painting method capable of imparting good hermeticity without being restricted by the thickness of the film.

  The painting apparatus of the present invention for solving the technical problem comprises a first chamber member opening upward and a second chamber member opening downward, and the first chamber A closed working chamber is formed by abutting the open end of the member and the open end of the second chamber member, and a film is interposed between the first chamber member and the second chamber member. By partitioning the working chamber into two parts, a first chamber on the first chamber member side and a second chamber on the second chamber member side, and sucking air existing in the working chamber, A painting device that coats the film on a transfer object arranged in the first chamber member by making the internal pressure of the two chambers positive with respect to the internal pressure of the first chamber, , Against the base A fixed column, a first fixture attached to the column, a second fixture attached to the second chamber member, and a first chamber lifting device for raising and lowering the first chamber member. The second chamber member is fixed to the support column by connecting the first fixture and the second fixture when the working chamber is formed. The first chamber member is raised by the first chamber lifting device, so that the open end of the first chamber member is pressed toward the open end of the second chamber member. (Hereinafter referred to as “the device of the present invention”).

  The apparatus according to the present invention further comprises a second chamber lifting / lowering device for lifting / lowering the second chamber member, and the second chamber member is moved by the second chamber lifting / lowering device when the working chamber is formed. In a preferred embodiment, the first fixture and the second fixture are connected after the first chamber member is approached.

  In the device according to the present invention, the first fixture is provided with a connection receiving hole, and the second fixture is provided with a connection pin that can be projected and retracted, and the connection pin is inserted into the connection reception hole. By doing so, a preferred embodiment is one in which the first fixture and the second fixture are connected.

  The painting method of the present invention that solves the above technical problem is made by abutting the opening end of the first chamber member that opens upward and the opening end of the second chamber member that opens downward. Forming a closed working chamber and interposing a film between the first chamber member and the second chamber member, thereby making the working chamber the first chamber member side; A working chamber forming step of partitioning into a second chamber on the second chamber member side, a suction step of sucking air existing in the working chamber, and an internal pressure of the second chamber with respect to an internal pressure of the first chamber A coating step of coating the film on the transfer object disposed in the first chamber member by setting the pressure to a positive pressure, and a predetermined painting method is performed when the work chamber forming step is performed. Located at the height of The opening end of the first chamber member is pushed toward the opening end of the second chamber member by raising the first chamber member toward the second chamber member. (Hereinafter referred to as “the method of the present invention”).

  According to the present invention, the working chamber formed by abutting the opening end of the first chamber member and the opening end of the second chamber member is good without being limited by the thickness of the film used. Sealing ability can be imparted.

FIG. 1 is a side view showing an aspect of the device of the present invention in a partially sectional state. FIG. 2 is a front view showing the device of the present invention. FIG. 3 is a cross-sectional view showing a film. 4 (a) and 4 (b) are side views showing a state in which a work chamber forming step is being performed. FIG. 5 is a side view (a) showing a state in which the first fixing tool and the second fixing tool are connected at the time of executing the working chamber forming step, and the connection between the first fixing tool and the second fixing tool. It is an enlarged view (b) of a part. FIG. 6 is a side view (a) showing a state in which the first chamber is raised during execution of the work chamber forming step, and an enlarged view (b) of a connecting portion between the first fixture and the second fixture. ). FIG. 7 is a side view showing a state in which the suction process is executed. FIG. 8 is a side view showing a state where the holder installation base is raised during the suction step. FIG. 9 is a side view showing a state in which the covering step is executed. FIG. 10 is a side view showing another aspect of the device of the present invention in a partially sectional state.

  Hereinafter, although the form for implementing this invention is demonstrated based on drawing, this invention is not limited to this embodiment.

<Invention Device 1>
1 and 2 show an embodiment of the device 1 of the present invention. The present invention device 1 includes a first chamber member 2, a second chamber member 3, a suction device 4, and a heating medium supply device 5. The device 1 of the present invention further includes a base 6, a support column 7, a first fixture 8, a second fixture 9, and a first chamber lifting device 10.

-First chamber member 2-
The first chamber member 2 is a box that opens upward. The first chamber member 2 is made of, for example, a metal material such as iron or aluminum or a plastic material such as carbon fiber reinforced plastic.

  In the present embodiment, a flange 20 is provided along the periphery of the opening end of the first chamber member 2. The first chamber member 2 is provided with a holder mounting base 21 therein. The holder installation table 21 can be moved up and down by a holder installation table lifting cylinder 22 provided at the lower part of the first chamber member 2.

  The outer edge shape of the holder installation base 21 is substantially the same as the opening shape of the first chamber member 2, and the holder installation base 21 is flush with the opening end of the first chamber member 2. When raised, the open end of the first chamber member 2 can be blocked by the holder mounting base 21. Further, a transfer object holder 23 is provided on the upper surface of the holder mounting base 21.

  The transferred object holder 23 positions the transferred object W during the painting work on the transferred object W by the apparatus 1 of the present invention, and holds the transferred object W so as not to move during the work. To play a role.

  In the present embodiment, a plurality of holder installation base support devices 24 are provided for each of the front side and the back side of the first chamber member 2. The holder installation base support device 24 has an installation base support pin 241 that can be projected and retracted toward the inside of the first chamber member 2. The installation base support pin 241 protrudes into the first chamber member 2 after raising the holder installation base 21 to a position flush with the opening end of the first chamber member 2, and the holder It plays a role of supporting the installation table 21.

-Second chamber member 3-
The second chamber member 3 is a box that opens downward. The second chamber member 3 is made of, for example, a metal material such as iron or aluminum or a plastic material such as carbon fiber reinforced plastic.

  In the present embodiment, a flange 30 is provided along the periphery of the open end of the second chamber member 3. The second chamber member 3 can be moved up and down by a second chamber lifting device 31. Further, the second chamber member 3 is provided with a heating plate 32 therein.

  The temperature of the hot platen 32 can be controlled by a control unit (not shown). The hot platen 32 may be fixed according to the height of the transfer object W, but in the present embodiment, the hot platen can be moved up and down by the hot plate lifting cylinder 33.

-Suction device 4-
In the present embodiment, the suction device 4 includes a suction pump 41, a suction passage 42 connected to a suction hole of the suction pump 41, a branch from the suction passage 42, and the first chamber member 2 and the first passage. Branch passages 43 and 44 communicating with the two-chamber member 3 and suction opening / closing valves 45 and 46 disposed in the branch passages 43 and 44 are provided. The suction device 4 further includes a bypass passage 47 that connects the branch passages 43 and 44, and the bypass passage 47 includes a bypass opening / closing valve 48.

-Heating medium supply device 5-
In the present embodiment, the heating medium supply device 5 includes a superheated steam generator 51 that generates superheated steam as a heating medium, one end connected to the discharge hole of the superheated steam generator 51, and the other end of the heating medium supply device 5. A steam passage 52 communicated with the second chamber member 3 and a steam on-off valve 53 disposed in the steam passage 52 are provided. The “superheated steam” means a steam that has a steam temperature equal to or higher than the saturation temperature under a certain pressure by further heating the saturated steam.

-Base 6-
The said base 6 is a member used as the foundation of this invention apparatus 1, and a floor and the ground may be utilized as the said base 6 depending on the case. The holder installation base lifting cylinder 22 is fixed to the base main body 62.

-Prop 7-
The column 7 is fixed to the base 6. As shown in FIG. 2, in this embodiment, a plurality of the support posts 7 are arranged at equal intervals on the front side and the back side of the first chamber member 2, A lower end is erected in a vertical direction in a state of being fixed to the base main body 62.

-First fixture 8-
In the present embodiment, the first fixture 8 is attached to the upper end of each of the columns 7. The first fixture 8 has a connecting pin 81 that can be projected and retracted inward of the device 1 of the present invention. The distal end of the connecting pin 81 is tapered so as to taper toward the distal end side.

-Second fixture 9-
The second fixture 9 is attached to the second chamber member 3. In the present embodiment, the second fixture 9 has an overall shape that is L-shaped in cross-sectional view and includes a flat plate-like main surface portion 91 and a bent piece 92 existing on the upper portion of the main surface portion 91. Further, a connection receiving hole 93 penetrating the front and back of the main surface portion 91 is provided on the lower end side of the main surface portion 91. The connection receiving hole 93 is tapered so as to reduce the inner diameter toward the second chamber member 3 side.

  And the said 2nd fixing tool 9 is being fixed in the state which hooked the said bending piece 92 to each edge part of the front side of the said 2nd chamber member 3, and a back side. Under this state, the lower end side of the main surface portion 91 protrudes below the opening end of the second chamber member 3, and the connection receiving hole 93 is below the opening end of the second chamber member 3. It will be the position of.

-First chamber lifting device 10-
The first chamber lifting / lowering device 10 is a mechanical element that plays a role of lifting and lowering the first chamber member 2, and a hydraulic cylinder is used in the present embodiment. In the present embodiment, the first chamber lifting device 10 is disposed between the base 6 and the first chamber member 2, and the four first chamber lifting devices 10 are conveniently arranged in the first chamber member 2. The first chamber member 2 is moved up and down while supporting the four corners.

<Film F>
FIG. 3 shows an example of the film F used in this embodiment. The film F is a four-layer laminated film (transfer film) in which a release layer F2, a pattern layer F3, and an adhesive layer F4 are sequentially laminated on one side of the base film F1.

<Method of the present invention>
4 to 9 show the steps of the method of the present invention in which painting is performed on the transfer object W by the device 1 of the present invention. In the method of the present invention, a work chamber forming process, a suction process, and a covering process are executed.

  In the present embodiment, a transfer film is used as the film F. Therefore, after the film F is coated on the surface (exposed surface) of the transfer object W by executing each step, the base film is used. F1 is peeled off, and finally the object to be transferred W is painted according to the pattern of the pattern layer F3.

-Work chamber formation process (see Figs. 4 to 6)-
In the working chamber forming step, a closed working chamber S is formed by abutting the open end of the first chamber member 2 with the open end of the second chamber member 3, and the first chamber member 2 By interposing the film F between the first chamber member 3 and the second chamber member 3, the working chamber S is placed on the first chamber member 2 side, and the second chamber member 3 side is on the second chamber member 3 side. It is divided into two with two chambers S2.

  In forming the working chamber S, first, as shown in FIG. 4A, the transfer object W is held by the transfer object holder 23 and then the opening end of the first chamber member 2 is closed. Thus, the film F is arranged. At this time, the film F is arranged such that the adhesive layer F4 side faces the first chamber member 2.

  Next, as shown in FIG. 4B, the second chamber member 3 is lowered to a predetermined position on the first chamber member 2. This predetermined position is a predetermined distance between the opening end of the first chamber member 2 and the opening end of the second chamber member 3 (an interval larger than the thickness of the film F (for example, an interval of 5 ± 2 mm)). It is set as the position which opposes in the state which opened. The predetermined position is a position where the tip of the connection pin 81 of the first fixture 8 and the open end of the connection receiving hole 93 of the second fixture 9 face each other.

  In this state, when the connecting pins 81 of the first fixing tools 8 are advanced toward the connecting receiving holes 93 of the second fixing tools 9 facing each other, as shown in FIG. The second chamber member 3 is positioned by being inserted into the connection receiving hole 93. Thereby, the second chamber member 3 is fixed to the support column 7.

  Then, if the first chamber member 2 is raised toward the second chamber member 3 by driving the first chamber lifting and lowering device 10, as shown in FIG. The film F is sandwiched between the open end and the open end of the second chamber member 3. Under this state, if an upward force is continuously applied to the first chamber member 2 by the first chamber lifting device 10, the opening end of the first chamber member is pressed toward the opening end of the second chamber member. Is done.

  As a result, the film F forms a working chamber S partitioned into two chambers, a first chamber S1 on the first chamber member 2 side and a second chamber S2 on the second chamber member 3 side. The

-Suction process (see Figs. 7 and 8)-
In the suction step, air existing in the working chamber S is sucked. In the present embodiment, first, as shown in FIG. 7, suction opening / closing valves 45, 46 disposed in the branch passages 43, 44 in the suction device 4, and bypass opening / closing valves disposed in the bypass passage 47, respectively. 48 was opened, and the suction pump 41 was operated to suck the air existing in the working chamber S and depressurize the working chamber S.

  When the suction process is performed, the bypass passage 47 plays a role of suppressing a pressure difference between the first chamber S1 and the second chamber S2. After the working chamber S is sufficiently depressurized, the suction on-off valve 46 and the bypass on-off valve 48 disposed on the branch passage 44 side are closed. On the other hand, the suction opening / closing valve 45 arranged on the branch passage 43 side is left open.

  When the suction step is executed, in the present embodiment, the heating plate 32 is lowered toward the film F by the heating plate raising / lowering cylinder 33, and the heater disposed in the heating plate 32 is operated. Thus, the film F is heated and softened.

  Then, after the working chamber S is sufficiently depressurized, the hot platen 32 is raised, and the holder installation base 21 is flush with the open end of the first chamber member 2 as shown in FIG. The transferred object W is brought into contact with the film F by raising it to the position. At this time, the installation base support pin 241 of the holder installation base support device 24 protrudes into the first chamber member 2 and underpins the holder installation base 21.

-Covering process (see Fig. 9)-
In the covering step, the film F is applied to the transfer object W disposed in the first chamber member 2 by setting the internal pressure of the second chamber S2 to a positive pressure with respect to the internal pressure of the first chamber S1. Cover.

  As shown in FIG. 9, in this embodiment, the superheated steam generator 51 is operated, the steam on-off valve 53 arranged in the steam passage 52 is opened, and superheated steam is supplied toward the second chamber S2. By rubbing, a pressure difference is generated between the second chamber S2 to which superheated steam is supplied and the first chamber S1 in a reduced pressure state. When the internal pressure of the second chamber S2 becomes positive with respect to the internal pressure of the first chamber S1, the film F is in close contact with the exposed surface of the transfer object W. Thereafter, the film F adhered to the exposed surface of the transfer object W is further heated by the heat of the superheated steam supplied to the second chamber S2, and the adhesive layer F4 is melted. Thereby, the film F is coated on the exposed surface of the transfer object W.

  The device 1 of the present invention that applies the painting to the transfer object W through such a process before pressing the opening end of the first chamber member 2 toward the opening end of the second chamber member 3. In this stage, a sufficient distance can be secured between the opening end of the first chamber member 2 and the opening end of the second chamber member 3 which are opposed to each other, regardless of the thickness of the film F. It becomes possible to perform painting.

  Further, when the working chamber S is formed, the opening end of the first chamber member 2 is pressed toward the opening end of the second chamber member 3. Good sealing properties can be imparted.

  Further, since the drag generated when the opening end of the first chamber member 2 is pressed toward the opening end of the second chamber member 3 is received by the support column 7 fixed to the base 6, A load is not applied to the frame that supports the second chamber member 3.

  By the way, in the present embodiment, after the second chamber elevating device 31 lowers the second chamber member 3 to a predetermined position during the work chamber forming step, the first chamber member 2 is raised. However, the second chamber member 3 may be fixed in advance without being lowered, and the first chamber member 2 may be raised toward the fixed second chamber member 3.

  Further, in the present embodiment, the first fixing tool 8 and the second fixing tool 9 are inserted by inserting the connecting pin 81 of the first fixing tool 8 into the connection receiving hole 93 of the second fixing tool 9. Although connection is performed, if the second chamber member 3 is fixed to the support column 7 by the connection between the first fixture 8 and the second fixture 9, the connection means There is no particular limitation. For example, contrary to the present embodiment, an element corresponding to the connection receiving hole 93 may be provided in the first fixture 8, and an element corresponding to the connection pin 81 may be provided in the second fixture 9. .

  Furthermore, in the present embodiment, when the internal pressure of the second chamber S2 is set to a positive pressure with respect to the internal pressure of the first chamber S1, during the coating step, superheated steam is directed toward the second chamber S2. Although introduced, as a medium to be introduced into the second chamber S2, a gas such as air that is not actively heated can be used in addition to a heating medium such as heated steam, heated air, and saturated steam.

  In addition, in the present embodiment, the film F is heated after the hot platen 32 is lowered toward the film F in the suction step, but the film F by the hot platen 32 is heated. The heating of is not necessarily essential. Further, the film F may be heated without lowering the hot platen 32.

  Further, in the present embodiment, a four-layer laminated film (transfer film) is used as the film F. However, as the film F, a three-layer laminated film that does not include the release layer F2 may be used. Further, as the film F, a two-layer laminated film that does not include the base film F1 may be used.

  In the present embodiment, the second fixture 9 is fixed directly to the second chamber member 3, but the second fixture 9 is fixed to the second chamber member 3. Is not particularly limited.

  For example, as shown in FIG. 10, the second fixture 9 may be attached to the second chamber member 3 via a fastening band 90.

  When the second fixture 9 is attached to the second chamber member 3 via the fastening band 90, when the working chamber S is formed, a load applied to the second chamber member 3 is the fastening. The band 90 disperses the ceiling surface of the second chamber member 3. Therefore, no local load is applied to the second chamber member 3. Thereby, the selection range about the raw material and thickness which form said 2nd chamber member 3 spreads, As a result, it becomes possible to reduce manufacturing cost.

  The present invention can be implemented in various other forms without departing from the spirit or main features thereof. Therefore, the above-mentioned embodiment is only a mere illustration in all points, and should not be interpreted limitedly. The scope of the present invention is indicated by the claims, and is not restricted by the text of the specification. Further, all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.

  The apparatus of the present invention is suitably used as a painting apparatus for painting a transfer object.

1 Device of the present invention (painting device)
2 First chamber member 3 Second chamber member 4 Suction device 5 Heating medium supply device 6 Base 7 Column 8 First fixture 81 Connection pin 9 Second fixture 90 Fastening band 93 Connection receiving hole 10 First chamber lifting device F the film

Claims (4)

A first chamber member opening upward;
A second chamber member opening downward;
Comprising
A closed working chamber is formed by abutting the opening end of the first chamber member and the opening end of the second chamber member, and a film is formed between the first chamber member and the second chamber member. By interposing, the working chamber is divided into two parts, a first chamber on the first chamber member side and a second chamber on the second chamber member side, and the air existing in the working chamber is sucked And a painting device for covering the film to be transferred disposed in the first chamber member by setting the internal pressure of the second chamber to a positive pressure relative to the internal pressure of the first chamber. ,
The base,
A post fixed to the base;
A first fixture attached to the column;
A second fixture attached to the second chamber member;
A first chamber lifting device for lifting and lowering the first chamber member;
Further comprising
When the work chamber is formed, the first chamber is fixed to the support column by connecting the first fixture and the second fixture, and then the first chamber The painting apparatus characterized in that the first chamber member is raised by an elevating device so that the opening end of the first chamber member is pressed toward the opening end of the second chamber member. . The painting apparatus according to claim 1,
Furthermore, it comprises a second chamber lifting and lowering device for lifting and lowering the second chamber member,
When the working chamber is formed, the first fixture and the second fixture are connected after the second chamber member is brought close to the first chamber member by the second chamber lifting device. A painting device designed to be used. The painting apparatus according to claim 1 or 2,
A connection receiving hole is provided in the first fixture,
In addition, the second fixing tool is provided with a connecting pin that can be projected and retracted,
A painting apparatus in which the first fixing tool and the second fixing tool are connected by inserting the connection pin into the connection receiving hole. A closed working chamber is formed by abutting the opening end of the first chamber member opening upward and the opening end of the second chamber member opening downward, and the first chamber member By interposing a film between the first chamber member and the second chamber member, the working chamber is divided into two chambers, a first chamber on the first chamber member side and a second chamber on the second chamber member side. A partitioning chamber forming step;
A suction step for sucking air existing in the working chamber;
A covering step of covering the film to be transferred disposed in the first chamber member by making the internal pressure of the second chamber positive with respect to the internal pressure of the first chamber;
A painting method for performing
When the working chamber forming step is performed, the first chamber member is raised toward the second chamber member positioned at a predetermined height, thereby opening the open end of the first chamber member to the second chamber member. A painting method characterized by pressing toward the opening end of the painting.

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