JP5707521B2 - Transfer apparatus and transfer method - Google Patents

Description

  The present invention relates to a transfer apparatus and a transfer method for transferring a pattern (pattern) printed on a transfer film and further a functional film to a work to be transferred.

  As a conventional transfer apparatus of this type, when a pair of upper and lower chambers arranged so that the openings of the processing chambers face each other and the openings of the processing chambers of the chambers are in close contact with each other, A transfer film set on the opposite end face of the opening of the lower chamber so as to partition the processing chamber of the chamber, means for adjusting the internal pressure of the upper and lower processing chambers partitioned by the transfer film, and a transfer film A heating device (heater) for heating and a rubber member that further transfers a pattern (pattern) printed on the transfer film in close contact with the surface of the workpiece to be transferred to the surface of the workpiece to be transferred are publicly known. (For example, Patent Document 1).

  According to such a transfer apparatus, after the inside of the upper and lower processing chambers partitioned by the transfer film is evacuated, the transfer film is heated by the heater of the heating means, and then the compressed air from the pneumatic pump is supplied to the upper processing chamber. The transfer film is pressed onto the surface of the work to be transferred, and the pattern printed on the transfer film in close contact with the surface of the work to be transferred is pressed against the surface of the work to be transferred by the rubber member. .

JP 2010-110984 A

However, the conventional transfer device adjusts the internal pressure of the processing chamber of each chamber partitioned by the transfer film and heats the transfer film before the transfer film comes into close contact with the surface of the work to be transferred. At the same time as the transfer film stretches, the transfer film adhesive is also heated and grounded, so that the film slippage between the transfer film and the surface of the transferred work is impaired with respect to the transferred work having a three-dimensional surface. Due to problems such as air accumulation and wrinkles, reliable film grounding and close contact cannot be achieved.
Therefore, there is a problem in the transfer of the functional film that requires only the decorative transfer in a shape having a limit and requires reliability.

  Further, since the transfer film in close contact with the surface of the workpiece to be transferred is transferred by pressing with a rubber member, the transfer may not be possible depending on the shape of the workpiece to be transferred. For example, it is difficult to uniformly press the surface of the rubber member against the surface of the transferred workpiece that has been undercut and the transfer film that is in close contact with the surface, and the pattern printed on the transfer film has been undercut. There may be cases where the image cannot be transferred cleanly onto the surface of the workpiece.

  Therefore, in view of the above problems, the present invention is not only a decorative pattern printed on a transfer film, but also a functional film requiring adhesion security on the surface of any workpiece to be transferred. It is another object of the present invention to provide a transfer apparatus and a transfer method that can perform transfer with high contact reliability and can peel the transfer film cleanly from the surface of the work to be transferred.

  In order to solve the above-described problem, the transfer method of the present invention has a pair of chambers 2 and 3 disposed so that the openings 2c and 3c of the processing chambers 20 and 30 face each other. When the openings 2c and 3c are attached in close contact, the transfer film F is set in one of the openings 2c and 3c so that the processing chambers 20 and 30 of the chambers 2 and 3 are partitioned. In a transfer method including a transfer film setting process and a transferred work setting process in which the transferred workpieces W and W1 to W4 are placed in the processing chamber 20 of one chamber 2, the transfer film F in each of the chambers 2 and 3 is used. After evacuating the partitioned processing chambers 20 and 30 simultaneously, the evacuation of the processing chamber 30 of the other chamber 3 is stopped and the evacuation of the processing chamber 20 of the one chamber 2 is further continued. The transfer chamber grounding step in which the transfer chamber F is grounded to the surface Wa of the workpieces W and W1 to W4, and the surface Wa of the workpiece W to be transferred are grounded. A transfer step in which heated air is pressurized and supplied to the transfer film F, and an ink agent that provides a handle or a functional film of the transfer film F is transferred to the surface Wa of the workpiece W to be transferred; And a peeling step of peeling the transfer film F grounded to the surface Wa of the workpieces W and W1 to W4 from the surface Wa of the workpieces W and W1 to W4 by breaking the processing chamber 20 in vacuum. And

  According to this configuration, the processing chambers 20 and 30 partitioned by the transfer film F in the chambers 2 and 3 are simultaneously evacuated, so that the transfer film F is not bent and the balance is maintained. After that, when the evacuation of the processing chamber 30 of the other chamber 3 is stopped and the processing chamber 20 of the one chamber 2 is further evacuated, the transfer film F is bent toward the processing chamber 20 side. . Thereafter, when the other processing chamber 30 is gradually vacuum-breaked, the difference between the internal pressure of one processing chamber 20 partitioned by the transfer film F and the internal pressure of the other processing chamber 30 increases, The transfer film F is slid along the surface Wa of W1 to W4 so as to slide along the surface Wa. Further, after the grounding step in which the transfer film F is grounded to the surface Wa of the workpieces W and W1 to W4, heated air is pressed into the transfer film F so that the pattern of the transfer film F is transferred to the workpiece W to be transferred. , W1 to W4 are transferred to the surface Wa, so that the ink agent of the transfer film F is cleanly transferred to the surface Wa of the workpieces W and W1 to W4. When the transfer film F is peeled off from the surface Wa of the workpiece W to be transferred, the transfer film F grounded to the surface Wa of the workpiece W to be transferred is vacuum-breaked from the air passage 220 of the transfer table 21 and transferred. Remove film F. Therefore, in the present invention, the fluid pressing surfaces formed in the predetermined spaces of the respective chambers 2, 3 and 4 are consistently formed with respect to the surface of the transfer film F in all the steps of the grounding step, the transfer step, and the peeling step. To act. By doing so, regardless of the type of the transfer film F, and irrespective of the shape of the transferred workpiece W, it can be transferred to the surface Wa of the transferred workpiece W cleanly or peeled off from the surface Wa of the transferred workpiece W. It becomes like this.

  Further, according to the present invention, the pair of chambers 2 and 3 are arranged so that the openings 2c and 3c of the processing chambers 20 and 30 face each other, and the openings 2c and 3c of the processing chambers 20 and 30 are arranged. The transfer film F is set in one of the openings 2c and 3c so that the processing chambers 20 and 30 of the chambers 2 and 3 are partitioned when the two are attached in close contact with each other. In the transfer apparatus in which the workpieces W and W1 to W4 are placed in the second processing chamber 20, the processing chambers 20 and 30 of the chambers 2 and 3 are simultaneously evacuated, and then the processing chamber 30 of the other chamber 3 is placed. Evacuation is stopped, the processing chamber 20 of one chamber 2 is further evacuated, and then the other processing chamber 30 is gradually evacuated to the surface Wa of the workpieces W and W1 to W4 to be transferred. Transfer film And an internal pressure adjusting means 32 configured to be grounded, and the inside of the processing chamber 20 of the one chamber 2 disposed on the bottom wall 2a of the processing chamber 20 of the one chamber 2 is evacuated and A plurality of ventilation paths 220 for breaking the vacuum are provided.

  According to such a configuration, as a pretreatment for transferring, the transfer film F can be cleanly grounded and brought into close contact with the surface Wa of the workpieces W and W1 to W4 to be transferred. That is, the internal pressure of the other chamber 3 becomes larger than the internal pressure of the one chamber 2, while the internal pressure of the other chamber 3 is gradually broken by vacuum, so that one surface of the transfer film F gradually approaches the one chamber 2 side. The transfer film F comes into contact with the surface Wa of the workpieces W and W1 to W4 so that the transfer film F slides, and the transfer film F is not wrinkled and printed on the transfer film F. There is little elongation of the ink pattern, and there is no residual air between the surface Wa of the workpieces W and W1 to W4 to be transferred and the transfer film F, and the transfer film F on the surface Wa of the workpieces W and W1 to W4 to be transferred. Will come into close contact with accuracy. When the transfer film F is peeled off from the surface Wa of the workpiece W to be transferred, the transfer film F grounded to the surface Wa of the workpiece W to be transferred is vacuum-breaked from the air passage 220 of the transfer table 21 and transferred. Remove film F. Therefore, in the present invention, the fluid pressing surfaces formed in the predetermined spaces of the respective chambers 2, 3 and 4 are consistently formed with respect to the surface of the transfer film F in all the steps of the grounding step, the transfer step, and the peeling step. To act. By doing so, regardless of the type of the transfer film F, and irrespective of the shape of the transferred workpiece W, it can be transferred to the surface Wa of the transferred workpiece W cleanly or peeled off from the surface Wa of the transferred workpiece W. It becomes like this.

  Further, according to the present invention, the separate chamber 4 having the heated air supply means 41 that pressurizes and supplies the heated air to the transfer film F grounded to the surface Wa of the workpieces W and W1 to W4. However, it is also possible to adopt a configuration in which the other chamber 3 is attached in close contact with the one chamber 2 from which the other chamber 3 has been removed.

  According to such a configuration, the heated air is pressurized and supplied to the transfer film F grounded to the surface Wa of the workpieces W and W1 to W4 to be transferred, so that the ink agent printed on the transfer film F Are transferred onto the surface Wa of the workpieces W and W1 to W4. That is, the ink agent of the transfer film F, which is heated almost entirely, is transferred to the uneven portions of the surface Wa of the workpieces W, W1 to W4, so that a substantially uniform transfer surface is formed. Then, the anchor effect of the ink agent is effectively acted by the pressure, and the ink agent on the transfer film F is transferred cleanly to the desired positions of the workpieces W and W1 to W4 to be transferred.

  Further, according to the present invention, the heated air supply means 41 is arranged along the surface Wa of the workpieces W and W1 to W4 to be transferred, and the plurality of heated air rectifying passages 46a include the workpieces W and W1 to W4 to be transferred. It is also possible to adopt a configuration having a heated air rectifying member 46 formed so as to face the surface Wa and a pressure adjusting exhaust valve 47 for adjusting the internal pressure of the processing chamber 40 of the other chamber 4.

  According to such a configuration, the heated air rectifying member 46 in which the heated air rectifying path 46a is formed is arranged along the surface Wa of the workpieces W and W1 to W4 to be transferred, so that the air pressure by the heated air rectifying member 46 is increased. The local temperature rise is eliminated, and the transfer film F grounded to the surface Wa of the workpieces W and W1 to W4 to be transferred can be heated substantially evenly. Further, by adjusting the internal pressure of the processing chamber 40 of another chamber 4 by the pressure adjusting exhaust valve 47, it is possible to adjust the time required to reach the desired heating temperature and internal pressure value.

  Further, according to the present invention, the one chamber 2 has a plurality of wedges that push up the one chamber 2 toward the other chamber 4 as the one chamber 2 is press-fitted into the bottom wall portion 2a of the one chamber 2. It is also possible to adopt a configuration including a chamber push-up means 35 for moving the push-up bodies 350 and 352 forward and backward.

  According to such a configuration, the large cylinder can maintain the close contact state of the chambers 2 and 4, so that the entire transfer apparatus 1 can be reduced in size and contribute to cost reduction.

  According to the present invention, the one chamber 2 may be configured to include a tension adjusting means 31 that maintains the tension at the time when the transfer film F is set from the set state to the transfer state. it can.

  According to this configuration, in addition to adjusting the pressure when the transfer film F is grounded to the surface Wa of the workpieces W and W1 to W4 to be transferred in the other chamber 4, the transfer film F is set in the one chamber 2. Since the tension adjusting means 31 for maintaining the tension at the time from the set state to the transfer state is provided, the transfer film F can be grounded more cleanly by the surface Wa of the workpieces W and W1 to W4.

  Further, according to the present invention, the other chamber 3 is provided with the visual means 33 so that the state where the transfer film F contacts the surface Wa of the workpieces W and W1 to W4 can be visually observed. Can also be adopted.

  According to such a configuration, since the transfer film F can be grounded on the surface Wa of the transferred workpieces W and W1 to W4 by the visual means 33 provided in the other chamber 3, the undercut transferred workpiece. Even in the case of W, W1 to W4, it is possible to visually recognize the state in which the transfer film F is grounded to the undercut portion.

  In addition, according to the present invention, it is possible to adopt a configuration in which a plurality of temperature sensors C1, C2 are arranged on the inner surfaces Wb of the workpieces W, W1-W4.

  According to such a configuration, the plurality of temperature sensors C1 and C2 are arranged on the inner surfaces Wb of the transferred workpieces W and W1 to W4, so that the transfer film F is transferred to the surface Wa of the transferred workpieces W and W1 to W4. The transfer temperature when the ink pattern is transferred can be accurately detected.

  According to the present invention, after the processing chambers of the respective chambers arranged so that the openings of the processing chambers face each other are evacuated simultaneously, the evacuation of the processing chamber of the other chamber is stopped, The processing chamber of this chamber is further evacuated, and then the other processing chamber is gradually broken in vacuum, so that the transfer film can be grounded cleanly on the surface of the work to be transferred. Furthermore, by supplying heated air to the transfer film that is neatly grounded on the surface of the work to be transferred, and simultaneously supplying the heated air, the ink agent pattern of the transfer film is uniformly and cleanly applied to the surface of the work to be transferred. Time-efficient transfer transfer can be performed by heating and pressing. Moreover, the transfer film can be peeled cleanly from the surface of the work to be transferred by breaking the vacuum from the air passage of one chamber.

1 is a schematic plan view of an entire transfer apparatus according to an embodiment of the present invention. (A) is a front view of FIG. 1, (b) is a side view of FIG. (A) is a top view of a lower chamber, (b) is a side view of Fig.2 (a). (A) is a side view which shows the state which the lower chamber and the upper chamber contact | adhered, (b) is a side view which shows the state which the lower chamber and another upper chamber contact | adhered. Schematic which shows the structure of a tension adjustment means, and the process in which a transfer film is set. (A) is the schematic which shows a transfer film setting process, and while the to-be-transferred work was mounted in the process chamber of a lower chamber, the transfer film with tension | tensile_strength was set to the opening end surface of this process chamber. The figure which shows a state, (b) is a figure which shows the state which set the transfer film to which the tension | tensile_strength was set to the opening end surface of the process chamber of an upper chamber. It is a figure which shows the process of adjusting the internal pressure of each process chamber of a lower chamber and an upper chamber, (a) is a figure which shows the state which made the internal pressure of each process chamber of a lower chamber and an upper chamber the same, (b) ) Is a diagram showing a state in which the evacuation of the processing chamber of the upper chamber is stopped and the processing chamber of the lower chamber is further evacuated, and (c) is a gradual vacuum break of the internal pressure of the processing chamber of the upper chamber. FIG. (A) is a figure which shows the state which a transfer film slides on the surface of a to-be-transferred workpiece by adjusting the internal pressure of each process chamber of a lower chamber and an upper chamber, (b) is a figure in which a transfer film is a to-be-transferred workpiece. The figure which shows the state (state vacuum-adsorbed) grounded along the surface of FIG. 10, (c) is the figure which shows the state which the grounding process of the transfer film was complete | finished and the upper chamber separated from the lower chamber. (A) includes another heated air supply means that pressurizes and supplies heated air to the lower chamber in a state where the transfer film is grounded (vacuum adsorbed) on the surface of the work to be transferred. FIG. 5B is a diagram showing a state where the upper chamber is set. FIG. 5B is a diagram illustrating a state in which heated air is pressurized and supplied by the heated air supply unit of another upper chamber, and the pattern of the transfer film is applied to the surface of the workpiece to be transferred. The figure which shows the state which transfers, (c) is a figure which shows the state which the transfer process was complete | finished and another upper chamber separated from the lower chamber. (A)-(d) is a figure which shows the shape of various to-be-transferred workpieces.

Hereinafter, a transfer apparatus according to an embodiment of the present invention will be described with reference to FIGS.
As shown in FIGS. 1 and 2, the overall configuration of the transfer apparatus 1 according to the present embodiment includes a work table T, a lower chamber 2 disposed at one end of the work table T, and corners of the work table T. The upper chamber 3 disposed on the other side of the work table T, the lower chamber push-up means 35 disposed at the other end of the work table T, and another upper chamber 4 disposed above the lower chamber push-up means 35. .

  The work table T has a substantially L shape in plan view. The work table T includes a first stage Ta where the lower chamber 2 is arranged at one end, a second stage Tb where the upper chamber 3 is arranged at the corner, and another upper chamber at the other end. And a third stage Tc on which 4 is disposed.

  As shown in FIG. 2A, the first stage Ta is composed of a flat table 22 supported by a plurality of columns P, and the lower chamber 2 is placed on the table 22. Yes.

  As shown in FIG. 2A, the second stage Tb includes a table 25, an elevating cylinder 26, and a guide column 27. The lower chamber 2 is placed on the table 25. The elevating cylinder 26 is disposed directly below the substantially central portion of the table 25. The guide columns 27 are configured to be extendable and disposed at the four corners of the table 25. Then, the central portion of the table 25 is connected to the rod 26a of the elevating cylinder 26, and the lower chamber 2 comes in contact with and separates from the upper chamber 3 disposed above the lower chamber 2 as the rod 26a advances and retreats. (See FIG. 4A).

  Further, as shown in FIG. 6B, an internal pressure adjusting means 32 for adjusting the internal pressures of the processing chambers 20 and 30 is attached to the lower chamber 2 and the upper chamber 3 in the second stage Tb. The internal pressure adjusting means 32 includes a first pipe 321, a second pipe 322, and a vacuum pump 323. The first pipe 321 extends through the side wall 2 b of the lower chamber 2 so as to communicate with the gap 210 a of the pressure receiving block 210 of the lower chamber 2. The first pipe 321 is provided with a vacuum break valve 324a. The second pipe 322 is provided through the side wall 3 b of the upper chamber 3. A vacuum breaking electromagnetic valve 326 is connected to the second pipe 322 via a three-way joint 324b and a connection pipe 325. A first pipe 321 and a second pipe 322 are connected to the vacuum pump 323. A filter 327 is disposed on each chamber 2 and 3 side of the first piping 321 and the second piping 322, and a vacuum adjustment valve 328 and a gauge 329 are disposed on the vacuum pump 323 side of the first piping 321 and the second piping 322. Has been.

  As shown in FIGS. 2B and 4B, the third stage Tc includes a table 36, a guide column body 37, an elevating cylinder 38, a lower chamber push-up means 35, and another upper chamber 4. It has. The lower chamber 2 is placed on the table 36. The guide pillars 37 are configured to be extendable and are arranged at the four corners of the table 36. The elevating cylinder 38 is disposed directly below the substantially central portion of the table 36. The lower chamber push-up means 35 includes a fixed-side push-up body 350, a push-up cylinder 351, and a movable-side push-up body 352. The fixed-side push-up body 350 is formed of a wedge having a right-angled triangle cross section, and is fixed to the lower surface of one side end portion of the lower surface of the table 36. The push-up cylinder 351 is disposed on the side of one end portion of the table 36. The movable side push-up body 352 is formed of a wedge having a right-angled triangle cross section, and is fixed to the rod 351a of the push-up cylinder 351. Another upper chamber 4 is disposed opposite to the lower chamber push-up means 35. Then, as the rod 351a of the push-up cylinder 351 advances and retreats, the inclined surface 352a of the movable-side push-up body 352 slides on the inclined surface 352a of the fixed-side push-up body 352, so that the lower chamber 2 is separated from another upper chamber 4 Move up and down. That is, the inclined surface 350a of the fixed-side push-up body 350 is inclined obliquely upward as it goes to the one side end portion of the table 36, and the inclined surface 352a of the movable-side push-up body 352 is formed on one side end portion of the table 36. As it goes, it inclines in the diagonally downward direction, and the lower chamber 2 can be raised and lowered by sliding the inclined surfaces 350a and 352a.

  The lower chamber 2 and the upper chamber 3 include a tension adjusting unit 31, an internal pressure adjusting unit 32, and an electrostatic removing unit 34. The tension adjusting unit 31 applies tension to the transfer film F set in either the lower chamber 2 or the upper chamber 3. The internal pressure adjusting means 32 is arranged so as to communicate with the inside of the processing chamber 20 of the lower chamber 2 and is arranged so as to communicate with the inside of the processing chamber 30 of the upper chamber 3. Then, after the insides of the processing chambers 20 and 30 of the lower chamber 2 and the upper chamber 3 are evacuated, the inside of the processing chamber 30 of the upper chamber 3 is gradually vacuum-ruptured and transferred to the surface Wa of the workpiece W to be transferred. The internal pressure adjusting means 32 is adjusted automatically or manually so that the film F is grounded. When the pressure is adjusted by the internal pressure adjusting means 32, the electrostatic removing means 34 removes static electricity from the transfer film F and improves the slippage on the surface Wa of the workpiece W to be transferred. Note that a pattern and a functional film are printed on the transfer film F with an ink agent.

  The lower chamber 2 is made of a material that can withstand a pressure of 0.8 Mpa, for example, an aluminum material. As shown in FIGS. 3A and 3B and FIG. 6A, the lower chamber 2 includes a bottom wall portion 2a and a side wall portion 2b. A transfer table 21 on which the workpiece W to be transferred is placed is disposed on the bottom wall 2a. The side wall part 2b is arrange | positioned at front and back, right and left, and has the transfer depth required in order for the transfer film F to transcribe | transfer to the to-be-transferred workpiece W. FIG. Then, the processing chamber 20 is formed by being surrounded by the bottom wall portion 2a and the side wall portion 2b. A bowl-shaped film pressing portion 2 d on which the transfer film F is set is formed in the upper surface opening 2 c of the processing chamber 20. Further, the upper surface opening 2c of the lower chamber 2 has an opening area required for the transfer film F to be grounded to the transferred workpiece W when the transfer film F is set on the film pressing portion 2d. Yes. The lower chamber 2 is carried by a handle 2e attached to one side surface of the lower chamber 2. The movement of the lower chamber 2 to each stage Ta to Tc is performed by air craft.

  As shown in FIG. 6A, the transfer table 21 has a pressure receiving block 210, an air vent plate 211, and a punch plate 212.

  As shown in FIG. 6A, the pressure receiving block 210 has a shape and rigidity that is not deformed by the pressure in the lower chamber 2. The pressure receiving block 210 may be, for example, a columnar body made of an aluminum material or a plate material formed in a lattice shape. In the case of the pressure receiving block 210 made of a columnar body, a plurality of columnar bodies are arranged at a predetermined interval 210a so as to form an air passage that can be evacuated. In the case of the pressure receiving block 210 made of a grid-like plate material, a single plate material is disposed on the bottom wall portion 2 a of the lower chamber 2. Alternatively, a plurality of plate materials are arranged on the same plane (not shown). However, in the case of a plate material, piping for evacuating is arranged in each passage.

  The air vent plate 211 is arranged on the pressure receiving block 210 as shown in FIG. The air vent plate 211 is formed with a plurality of air vent holes (diameter of about 5 mm) 211 a and has a thickness that can withstand the pressure in the lower chamber 2.

  The punch plate 212 is disposed on the air vent plate 211 as shown in FIG. The punch plate 212 has a plurality of punch holes (a diameter of about 0.5 to 1 mm) 212a. The surface of the punch plate 212 is inactivated so that the ink pattern (pattern) printed on the transfer film F is not transferred. The reason why the punch plate 212 is disposed on the air vent plate 211 is that the transfer film F is sucked into the air vent hole 211a of the air vent plate 211 and tearing occurs. In order to prevent this, a punch plate 212 having a punch hole (not shown) having a smaller diameter than the air vent hole 211a is arranged.

  A positioning body 213 is attached to a substantially central portion of the punch plate 212. Although not shown, the positioning body 213 is a male male die that is inserted into the hollow portion of the workpiece W to be transferred.

  Here, the relationship between the height H0 of the transfer table (the pressure receiving block 210, the air vent plate 211, and the punch plate 212) 21 and the design of the transfer will be described. In order to obtain a transfer result with a good design, the transfer film F transferred to the workpiece W is not wrinkled, and the pattern printed on the transfer film F does not stretch when transferred. For example, air does not remain between the transfer film F and the transferred work W.

  In the upper surface opening 2c of the lower chamber 2, the difference between the area of the transfer film F set with tension and the area when the transfer film F contacts the transferred workpiece W in the transfer process should be minimal. For example, the above-described transfer result with good design properties can be obtained. For this purpose, as shown in FIG. 6A, the sum (H1) of the height of the positioning body 213 and the height of the workpiece W to be transferred and the transfer depth, that is, from the upper surface of the transfer table 21 to the lower chamber 2 It is necessary to minimize the difference from the height (H2) to the upper surface opening 2c. That is, the height (H0) of the height of the transfer table 21, that is, the height of the pressure receiving block 210, the height of the air vent plate 211, and the height of the punch plate 212 is the height of the positioning body 213 and the height of the workpiece W to be transferred. Is appropriately set so that the difference between the sum and the transfer depth H2 is minimized. That is, the smaller the distance between the pattern of the transfer film F and the surface Wa of the workpiece W, the smaller the pattern elongation of the transfer film F, and the clearer the transfer. However, the minimum height of the pressure receiving block 210 is a height at which a space for evacuating the lower chamber 2 can be formed.

  In addition, the pressure in the lower chamber 2 is vacuumed through a vent passage 220 constituted by a distance between a punch hole (not shown) of the punch plate 212, an air vent hole 211 a of the air vent plate 211, and the pressure receiving block 210. To be pulled. Each air passage 220 is formed in a direction orthogonal to the set transfer film F. That is, each air passage 220 evacuates the surface of the transfer film F in a tensioned state substantially uniformly, whereas the surface of the transfer film F that is vacuum-adsorbed after transfer has The atmosphere is supplied substantially uniformly, and the transfer film F is easily peeled off from the surface Wa of the transferred workpiece W.

  As shown in FIG. 2, the upper chamber 3 is made of a material such as an aluminum material. As shown in FIGS. 4 (a) and 6 (b), the upper chamber 3 includes an upper wall portion 3a, and front, rear, left and right side wall portions 3b extending from the peripheral edge of the upper wall portion 3a. Yes. The upper wall portion 3a is configured such that the transfer film F is stretched on the lower surface opening 3c in the same manner as the upper surface opening 2c of the lower chamber 2. That is, a bowl-shaped film pressing portion 2d on which the transfer film F is set is formed at the opening peripheral edge of the lower surface opening 3c. Furthermore, a tension adjusting means 31 for applying a tension to the transfer film F can be installed in the lower surface opening 3c. The side wall 3b of the upper chamber 3 has a depth required for evacuating the transfer film F, and is surrounded by the upper wall 3a and each side wall 3b to form the processing chamber 30. Yes. Further, a plurality of rectangular confirmation windows (viewing means) 33 for viewing the state in which the transfer film F is grounded to the surface Wa of the workpiece W to be transferred and the upper surface of the transfer table 21 are provided on the upper wall portion 3a. Is arranged. The shape of the confirmation window 33 is not limited to the illustrated shape, and may be circular or non-circular. Further, as a visual observation means, instead of the confirmation window 33, the upper wall 3a and each side wall 3b (whole) may be the transparent upper chamber 3, and either the upper wall 3a or each side wall 3b. The upper chamber 3 may be transparent.

  The tension adjusting means 31 is configured so that the tension at the time when the transfer film F is set is maintained from the set state to the transfer state. As shown in FIGS. 5A to 5C, the tension adjusting means 31 includes a film take-up roller 310 with a clutch, a film feeding member 311, a film drawing clip 312, a film clip bar 313, and a film cutter. 314. The film take-up roller with clutch 310 is configured such that a transfer film F having a predetermined length is wound, can be rotated forward and backward, and stops at a desired position. The film delivery member 311 is configured to send the end of the transfer film F by blowing out air supplied from the film take-up roller 310 with clutch to the film drawing clip 312 side. The film drawing clip 312 is configured to be capable of reciprocating in the left-right direction of the drawing and to be able to grip the end of the transfer film F. The film clip bar 313 is arranged forward and backward with respect to the drawing, and is configured to grip the front end portion and the rear end portion of the drawn transfer film F. The film cutter 314 is configured to cut the transfer film F in a state where the lower chamber 2 and the upper chamber 3 are in close contact with each other. The static electricity removing means 34 is disposed between the film take-up roller with clutch 310 and the film drawing clip 312.

  As the electrostatic removal means 34, a ready-made ionizer is used, and the ions charged on the transfer film F are neutralized. As a result, the transfer film F slides on the surface Wa of the workpiece W to be transferred.

  As shown in FIG. 9A, the other upper chamber 4 includes an upper wall portion 4a, and front, rear, left and right side wall portions 4b that are suspended from the peripheral edge portion of the upper wall portion 4a. The other upper chamber 4 is made of a material that can withstand a pressure of 0.8 Mpa, for example, an aluminum material. Heated air supply means 41 is disposed on the upper wall portion 4a. The side wall portion 4b has a depth required to pressurize the compressed air heated by the transfer film F. In another upper chamber 4, a processing chamber 40 is formed surrounded by the upper wall portion 4a and the side wall portion 4b.

  The heated air supply means 41 includes a compressor 42, a regulator 43, a high pressure heater 44, a nozzle 45, a heated air rectifying member 46, and a pressure adjusting exhaust valve 47. The compressor 42 generates compressed air to be supplied to the processing chambers 20 and 40 of the lower chamber 2 and the other upper chamber 4. The regulator 43 is connected to the compressor 42 by the connection pipe 40 </ b> A and adjusts the pressure of the compressed air of the compressor 42. Further, the regulator 43 is connected to a branch pipe 41A that is branched on both sides, and each branch pipe 41A is provided with an electromagnetic valve 410, and the electromagnetic valve 410 opens and closes the flow path of each branch pipe 41A. The electromagnetic valve 410 is configured to open and close the flow path of each branch pipe 41 </ b> A by the controller 411. A plurality of high-pressure heaters 44 are arranged between the electromagnetic valve 410 and the nozzle 45 and heat the compressed air from the compressor 42. The nozzle 45 penetrates the upper wall 4a of another upper chamber 4 in the vertical direction (sometimes penetrates the side wall 4b). The heated air rectifying member 46 is connected to the nozzle 45 inside the other upper chamber 4, and pressurizes the heated air so as to be almost evenly distributed to the processing chambers 20 and 40 of the lower chamber 2 and the other upper chamber 4. Supply. The pressure adjusting exhaust valve 47 adjusts the pressures of the processing chambers 20 and 40 in the lower chamber 2 and the other upper chamber 4.

  The heated air rectifying member 46 is disposed so as to be parallel to the upper wall portion 4a of another upper chamber 4 (may be disposed on the side wall portion 4b), and is a lattice-shaped plate material or a plurality of heated air rectifying members. It is made of a pipe material in which the path 46a is formed and has heat resistance. It should be noted that any plate material or pipe material may be used as long as it can obtain a good transfer result with respect to the workpiece W to be transferred. For example, a plate material may be a flat plate shape, an arc shape, a concave shape, or the like. Any one of them may be arranged, and as long as it is a pipe material, any one of a linear shape and a curved shape (L-shaped, C-shaped, etc.) may be arranged in combination. It may be arranged. In short, it is only necessary to be able to supply air that is pressurized and heated substantially uniformly to the processing chambers 20 and 40 of the lower chamber 2 and the other upper chamber 4.

  The pressure adjusting exhaust valve 47 is arranged so that the internal pressure of the lower chamber 2 and the other upper chamber 4 becomes lower than the outlet pressure of the nozzle 45 of the heated air supply means 41, that is, the lower chamber 2 and the other upper chamber. The pressure value is set so that the high-pressure hot air circulates in the interior 4. The temperature of the high-pressure hot air is determined by comparing the temperature detected by the temperature sensors C1 and C2 with a set temperature (temperature at which the ink agent of the transfer film F is transferred to the surface Wa of the workpiece W to be transferred). By controlling the temperature to rise and fall, the temperature of the high-pressure hot air is determined.

  1 to 4, tension is applied to the transfer film F on the end surface of the opening of the transfer table 21 on which the workpiece W to be transferred is placed in the lower chamber 2, the lower chamber 2, or the upper chamber 3. Tension adjusting means 31 for setting, internal pressure adjusting means 32 for adjusting the internal pressures of the processing chambers 20 and 30 in the lower chamber 2 and the upper chamber 3, and heated air in the processing chamber 40 of another upper chamber 4 are pressurized. The heated air supply means 41 to be supplied is omitted. 6 to 9, a confirmation window 33 for visually confirming the appearance of the lower chamber 2, the upper chamber 3, and another upper chamber 4, and the state of the transfer film F grounded from the upper chamber 3, a push-up body 350 , 352 for advancing and retreating the lower chamber is omitted.

  Next, working steps of the transfer method will be described with reference to FIGS. This work process was grounded by a setting process of the transfer film F, an internal pressure adjusting process of the lower chamber 2 and the upper chamber 3, a transfer film grounding process for grounding the transfer film F to the surface Wa of the work W to be transferred. A transfer film transfer step for heating and supplying the pressurized air to the transfer film F. In addition, as the transfer film F, an elastomer film having ink printed as a design pattern or function is used, and the work to be transferred W is a disk-shaped main body and an upper surface of the main body. In addition, a workpiece to be transferred on which an arc surface having a bulging central portion is formed is used.

  First, in the setting process of the transfer film F, the workpiece W to be transferred is placed on the positioning body 213 of the processing chamber 20 of the lower chamber 2, and the transfer film F is opened in either the lower chamber 2 or the upper chamber 3. , 3c. The criterion for selecting either the lower chamber 2 or the upper chamber 3 is the relationship between the depth of the lower chamber 2 and the height of the workpiece W to be transferred, as described above. For example, when there is no difference between the depth of the lower chamber 2 and the height of the transferred workpiece, there is no slippage with respect to the surface Wa of the transferred workpiece W, and good grounding of the transfer film F with respect to the surface Wa of the transferred workpiece W is obtained. Disappear. In this case, the transfer film F is set in the upper chamber 3. When the transfer film F is set in the lower chamber 2, as shown in FIG. 5A, the transfer film F having a predetermined length is created from the film take-up roller 310 with a clutch, and the film is clipped thereby. The film is drawn out through a film delivery member 311 capable of correcting the film, and the end of the transfer film F is gripped by the film withdrawal clip 312. Next, as shown in FIG. 5B, the film drawing clip 312 is moved from one side to the other side. Subsequently, the film take-up roller with clutch 310 is reversely rotated to apply tension to the transfer film F. Then, the front end portion and the rear end portion of the drawn transfer film F are gripped by the film clip bar 313. Thereafter, as shown in FIG. 5C, the transfer film F is cut by the film cutter 314 in a state where the lower chamber 2 and the upper chamber 3 are in close contact with each other. At this time, the transfer film F is adsorbed by the pressing portion 2d of the lower chamber 2.

  That is, as shown in FIG. 6A, it is set on the end surface of the upper surface opening 2c so as to cover the upper surface opening 2c of the lower chamber 2. At this time, the tension adjusting means 31 pulls both ends of the transfer film F in opposite directions to apply tension, and the transfer film F is set so as to be linear. The tension value applied to the transfer film F by the tension adjusting means 31 is maintained from the transfer film F set state to the transfer state. When the transfer film F is set in the upper chamber 3, as shown in FIG. 6B, the lower surface opening 3 a of the upper chamber 3 is covered with tension applied to the transfer film F as described above. In this manner, the transfer film F is set on the end surface of the lower surface opening 3a. At this time, the static electricity of the transfer film F is removed by the existing static electricity removing means (ionizer) 34 so that the transfer film F slides with respect to the surface Wa of the workpiece W to be transferred.

  Next, in the internal pressure adjusting step, as shown in FIG. 7A, the lower chamber 2 is raised, and the lower surface opening 2c of the lower chamber 2 and the upper surface opening 3c of the upper chamber 3 are brought into close contact with each other. By the internal pressure adjusting means, the internal pressure of the processing chamber 20 of the lower chamber 2 and the processing chamber 30 of the upper chamber 3 partitioned by the transfer film F is adjusted by evacuation so as to be the same. At this time, it is confirmed that there is no air turbulence in the processing chamber 20 of the lower chamber 2 and the processing chamber 30 of the upper chamber 3 and that the transfer film F is in a horizontal state. It is visually recognized from 33. In addition, the code | symbol 100 in a figure represents an operator's eyes and has shown the state visually recognized from the confirmation window 33. FIG. Thereafter, as shown in FIG. 7B, evacuation of the upper chamber 3 is stopped, and the processing chamber 20 of the lower chamber 2 is further evacuated. At this time, the transfer film F is slightly bent downward (to the transferred workpiece W side). Also in this case, it is visually recognized from the confirmation window 33 as in FIG. Next, as shown in FIG. 7 (c), the processing chamber 30 of the upper chamber 3 is gradually vacuum broken manually so that the central portion of the transfer film F slides along the surface Wa of the workpiece W to be transferred. Thus, the portion of the transfer film F excluding the central portion bends toward the transfer table 21 side. That is, the sliding speed of the transfer film F is adjusted by gradually breaking the vacuum by confirming which part of the transfer surface is grounded.

  Next, in the transfer film grounding step, as shown in FIG. 8A, when the processing chamber 30 of the upper chamber 3 is further vacuum-ruptured, the central portion of the transfer film F is disc-shaped from the arc surface of the workpiece W to be transferred. The portion of the transfer film F excluding the central portion comes into contact with the upper surface of the transfer table 21. 8B, the transfer film F is grounded to the upper surface (arc surface) of the workpiece W to be transferred, the peripheral surface and lower surface of the disk-shaped main body, and the upper surface of the transfer table 21. An operator visually recognizes that it is in a state of being vacuum-sucked from the confirmation window 33 arranged in the upper chamber 3. After completion of the grounding step, the upper chamber 3 is separated from the lower chamber 2 as shown in FIG.

  Note that the tension condition and slip condition of the transfer film F are specified as the function of the ink agent printed on the transfer film F, the limit of the pattern (pattern) elongation, and the limit specification of the required pattern (pattern) positioning. It is determined by designating the transfer limit for the workpiece W to be transferred.

  Next, in the transfer film transfer step, as shown in FIG. 9 (a), the lower chamber 2 in a state where the transfer film F is grounded and another upper chamber 4 provided with the heating air supply means 41 are opposed to each other. Is done. Further, in order to measure the temperature of the contact surface between the transfer film F and the surface Wa of the transferred workpiece W, the upper center of the transferred workpiece W passes through the bottom wall portion 2a of the lower chamber 2 and the central portion of the positioning body 213. The first temperature sensor C1 is disposed so as to contact the inner surface Wb0 of the part. A plurality of second sensors C2 and C2 are arranged so as to contact the inner surface Wb1 of the side surface portion of the transferred workpiece W. As shown in FIG. 9B, the upper surface opening 2c of the lower chamber 2 and the lower surface opening 3c of the upper chamber 3 are attached in close contact. Air heated to 70 to 150 degrees is pressurized to 0.3 to 0.8 Mpa. This air is press-fitted through the heated air rectifying path 46a of the heated air rectifying member 46, and is blown substantially uniformly onto the transfer film F in a grounded state. At this time, the anchor effect effectively acts on the transfer film F. That is, the pattern printed on the transfer film F enters the concavo-convex portion of the surface Wa of the transferred work W, the transfer film F has no wrinkles, no pattern elongation, and the transfer film F and the surface Wa of the transferred work W There is no residual air between them, and the transfer is transferred cleanly. After completion of the transfer film transfer process, the upper chamber 4 is separated from the lower chamber 2 as shown in FIG. Finally, air is supplied through the air passage 220 of the transfer table 21. By this atmosphere, the vacuum-transferred transfer film F can be peeled cleanly from the surface Wa of the workpiece W to be transferred.

  The transferable arrival times of the processing chambers 20 and 40 in the lower chamber 2 and the separate upper chamber 4 are the arrival time of the temperature condition (70 to 150 degrees) and the arrival time of the pressure condition (0.3 to 0.8 Mpa). And determined by. The transferable arrival time is also determined by the volumes of the processing chambers 20 and 40 in the lower chamber 2 and the other upper chamber 4 and the number of high-pressure heaters 44. Therefore, it is possible to prioritize whether temperature or pressure is given priority. If the temperature does not reach even if the pressure reaches, it may be adjusted by the pressure adjusting exhaust valve 47. That is, the set value of the pressure adjusting exhaust valve 47 is made lower than the set value in the regulator 43, and hot air is circulated in the lower chamber 2 and the other upper chamber 4.

  Thus, according to the present invention, after the processing chambers 20 and 30 of the respective chambers 2 and 3 arranged so that the openings 2c and 3c of the processing chambers 2 and 3 face each other are evacuated simultaneously, While the evacuation of the processing chamber 30 of the other chamber 3 is stopped, the processing chamber 20 of the one chamber 2 is further evacuated. Thereafter, the other processing chamber 30 is gradually broken in vacuum, so that the transfer film F can be grounded to the surface Wa of the workpiece W to be transferred. Furthermore, since the pressurized air is heated to the transfer film F that is grounded to the surface Wa of the workpiece W to be transferred, the time-effective anchor effect is effectively acted, and the pattern of the transfer film F is It is possible to transfer and cleanly transfer to the surface Wa of the work W to be transferred without wrinkles, little elongation, and no displacement. Further, when the transfer film F is peeled off from the surface Wa of the work W to be transferred, the transfer film F is vacuum-breaked from the air passage 220 of the transfer table 21 to peel off the transfer film F. Yes. That is, in the present invention, the fluid pressing surfaces formed in the predetermined spaces of the chambers 2, 3, and 4 are consistently formed with respect to the surface of the transfer film F in all the steps of the grounding step, the transfer step, and the peeling step. To act. By doing so, regardless of the type of the transfer film F, and irrespective of the shape of the transferred workpiece W, it can be transferred to the surface Wa of the transferred workpiece W cleanly or peeled off from the surface Wa of the transferred workpiece W. It becomes like this.

  In addition, this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the summary of this invention.

  For example, in the case of the above-described embodiment, the workpiece W to be transferred having a disk-shaped main body portion and an arc surface with a central portion bulged on the upper surface of the main body portion is used. For example, FIG. ) May be a rectangular parallelepiped transferred workpiece W1, and as shown in FIG. 10B, an annular groove is formed in the lower portion of the main body of the transferred workpiece W2 described above, that is, under. It may be a cut workpiece to be transferred W2, or may be a deeply drawn concave workpiece to be transferred W3 as shown in FIG. 10 (c), and a bullet as shown in FIG. 10 (d). It may be a workpiece to be transferred W4. In short, the pattern of the transfer film F can be neatly transferred to the surface Wa of the transferred workpieces W1 to W4 regardless of the shapes of the transferred workpieces W1 to W4.

DESCRIPTION OF SYMBOLS 1 ... Transfer apparatus, 2 ... One chamber (lower chamber), 2a ... Bottom wall part, 2c, 3c, 4c ... Opening part, 3 ... The other chamber (upper chamber), 4 ... Another chamber, 20, 30, DESCRIPTION OF SYMBOLS 40 ... Processing chamber, 21 ... Transfer table, 220 ... Air flow path, 31 ... Tension adjusting means, 33 ... Confirmation window (viewing means), 35 ... Chamber push-up means, 350, 352 ... Push-up body, 41 ... Heated air supply means, 46 ... heated air supply member, 46a ... heated air rectifier, 47 ... pressure regulating exhaust valve, C1, C2 ... temperature sensor, F ... transfer film, W, W1-W4 ... transferred work, Wa ... transferred work W Surface, Wb ... Inner surface of workpiece to be transferred

Claims (8)

A pair of chambers (2, 3) are arranged so that the openings (2c, 3c) of the processing chambers (20, 30) face each other, and the openings (2c, 3c) of the processing chambers (20, 30). Is attached to any one of the openings (2c, 3c) so that the processing chambers (20, 30) of the chambers (2, 3) are partitioned. In a transfer method comprising: a transfer film setting process for setting the transfer work; and a transfer work setting process for placing the transfer work (W, W1 to W4) in the processing chamber (20) of one chamber (2).
The processing chambers (20, 30) partitioned by the transfer film (F) of each chamber (2, 3) are simultaneously evacuated, and then the evacuation of the processing chamber (30) of the other chamber (3) is stopped. Further, evacuation of the processing chamber (20) of one chamber (2) is continued, and then the other processing chamber (30) is evacuated to the surface (Wa of the workpiece (W, W1 to W4) to be transferred). ) A transfer film grounding step in which the transfer film (F) is grounded;
Pressurize and supply heated air to the transfer film (F) grounded to the surface (Wa) of the work to be transferred (W, W1 to W4) to provide the handle and functional film of the transfer film (F) A transfer step of transferring and transferring the ink agent to be transferred to the surface (Wa) of the transferred workpiece (W, W1 to W4);
Thereafter, the one processing chamber 20 is vacuum-breaked, and the transfer film (F) grounded to the surface (Wa) of the transferred work (W, W1 to W4) is transferred to the transferred work (W, W1 to W4). A transfer method comprising: a peeling step of peeling from the surface (Wa). A pair of chambers (2, 3) are arranged so that the openings (2c, 3c) of the processing chambers (2, 3) face each other, and the openings (2c, 3) of the processing chambers (20, 30) are arranged. 3c) is attached to one of the openings (2c, 3c) so as to partition the processing chambers (20, 30) of the chambers (2, 3) when attached in close contact. ) Is set, and the transfer work (W, W1 to W4) is placed on the processing chamber (20) of one chamber (2).
After the processing chambers (20, 30) of each chamber (2, 3) are evacuated simultaneously, the evacuation of the processing chamber (30) of the other chamber (3) is stopped and one chamber (2) The processing chamber (20) is further evacuated, and then the other processing chamber (30) is gradually evacuated to the transfer film (F) on the surface (Wa) of the workpiece (W, W1 to W4). Internal pressure adjusting means (32) configured to be grounded;
Plural for vacuuming and breaking the inside of the processing chamber (20) of the one chamber (2) disposed on the bottom wall (2a) of the processing chamber (20) of the one chamber (2) And a ventilation path (220).   Another chamber having a heated air supply means (41) for supplying heated air under pressure to the transfer film (F) grounded to the surface (Wa) of the workpiece (W, W1 to W4) to be transferred ( The transfer apparatus according to claim 2, wherein 4) is configured to be attached in close contact with the one chamber (2) from which the other chamber (3) is removed.   The heated air supply means (41) is disposed along the surface (Wa) of the transferred workpiece (W, W1 to W4), and a plurality of heated air rectification paths (46a) are provided to the transferred workpiece (W, W1 to W1). A heated air rectifying member (46) formed to face the surface (Wa) of W4), a pressure adjusting exhaust valve (47) for adjusting the internal pressure of the processing chamber (40) of the other chamber (4), The transfer apparatus according to claim 3, further comprising:   The one chamber (2) pushes up the one chamber (2) toward the other chamber (4) as it is press-fitted into the bottom wall (2a) of the one chamber (2). 5. The transfer apparatus according to claim 3, further comprising a chamber push-up means (35) for moving the wedge-like push-up body (350, 352) forward and backward.   The one chamber (2) is provided with tension adjusting means (31) for maintaining the tension at the time when the transfer film (F) is set from the set state to the transfer state. The transfer apparatus according to any one of 5.   The other chamber (3) is provided with a visual means (33) so that the transfer film (F) can be visually observed on the surface (Wa) of the transferred workpiece (W, W1 to W4). The transfer apparatus according to any one of claims 2 to 6, wherein the transfer apparatus is configured as described above.   The transfer according to any one of claims 2 to 7, wherein a plurality of temperature sensors (C1, C2) are arranged on the inner surface (Wb) of the transferred workpiece (W, W1-W4). apparatus.

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