Pressing die holder for foil pressing machine

Abstract

To provide a pressing die holder for a foil pressing machine, which can perform excellent foil pressing by uniformly pressing a pressing printing plate without time and labor for adjustment.SOLUTION: This pressing holder for the foil pressing machine is structured such that a pressing die includes a plate-like die body, a printing plate disposed in one surface side of the die body and pressed to an object, and a pressure reception part which is formed on the other surface side of the die body and to which a pressing force from the pressing die holder is applied. A loading part includes a recess in which the die body fits, a holding body that holds the printing plate in a state where the plate protrudes in a pressing direction, and a biasing part that presses a plurality of places of the pressure reception part of the die body in the recess by a pressing end and biases the places toward the printing plate, the loading part with the pressing die loaded to the loading part advances toward the object, and the biasing part biases the places of the pressure reception part and boil-presses the places to the object by the printing plate.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a stamping die holder for a foil stamping machine, which holds a stamping die in order to press the plate surface of the stamping die against an object to perform foil stamping. [Background technology]

[0002] Conventionally, as described in Patent Document 1, there is a foil stamping machine in which a die (pressing die) mounting base is attached to an arm, and the pressing die is attached and fixed to the underside of the die mounting base with screws, clamps, etc., and the pressing die is thermally transferred from the foil transfer sheet to the processed sheet on the base by the forward and backward movement of a cylinder rod.

[0003] Also, as described in Patent Document 2, there is a foil stamping machine in which a stamping die can be easily moved up and down by operating a lever, so that a name can be quickly stamped in foil on small items such as a wallet. This foil stamping machine has a stamping die such as a type attached to a stamping type holder that is heated by a heater, and the stamping die can be moved up and down by operating a lever. When using the foil stamping machine, an object to be stamped, such as a wallet, is placed on the base with the foil positioned between the object and the stamping die, and the heated stamping die is pressed against the object, so that the characters on the plate surface of the stamping die can be easily transferred to the object.

[0004] In conventional foil stamping machines, such as those described in the aforementioned Patent Documents 1 and 2, the stamping die is attached to the gap in the die mounting section and fixed with a screw or clamp, and then the plate surface of the stamping die is pressed against the target object using the pressing force of an arm to perform foil stamping. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Utility Model Application Publication No. 60-125137 [Patent Document 2] Japanese Utility Model Application Publication No. 2-64035 Summary of the Invention [Problem to be solved by the invention]

[0006] In the process of foil stamping, if the plate surface of the stamping die is not pressed evenly, the plate surface may be pressed unevenly onto the target object, resulting in missing print and making it difficult to achieve beautiful foil stamping. In order to apply uniform pressure to the plate surface, in Patent Document 1, it was necessary to adjust the parallelism of the pressing die by rotating the die mounting base with an adjustment knob, and in Patent Document 2, it was necessary to adjust the angle of the type holder. Therefore, in the past, precise adjustments were necessary to properly adjust the orientation of the printing surface portion so that it would be applied evenly to the target object, and this work required skill. Furthermore, when using press dies for small quantities of many different types of products, replacing and adjusting the press dies takes time and causes a heavy workload.

[0007] In view of the above circumstances, the present invention aims to provide a stamping die holder for a foil stamping machine that can uniformly press the plate surface of the stamping die without the need for laborious adjustments, thereby enabling high-quality foil stamping. [Means for solving the problem]

[0008] The present invention relates to a stamping die holder for a foil stamping machine, which has a mounting part to which a stamping die for foil stamping can be attached and detached, and which moves the stamping die attached to the mounting part toward and away from an object, wherein the stamping die has a plate-shaped die body, a plate surface portion arranged on one side of the die body for pressing against the object, and a pressure-receiving portion formed on the other side of the die body to which a pressing force from the stamping die holder is applied, and the mounting part has a recess into which the die body fits, a holding structure for holding the plate surface portion in a state in which it protrudes in the pressing direction, and a biasing portion that presses multiple points of the pressure-receiving portion of the die body with a pressing end within the recess to bias it toward the plate surface portion, and the stamping die holder for a foil stamping machine is characterized in that, as the mounting part with the stamping die attached advances toward the object, the biasing portion biases multiple points of the pressure-receiving portion of the stamping die, while the plate surface portion presses against the object with foil between them to stamp foil.

[0009] In the present invention, the biasing portion is an elastic body contained within a housing body, the elastic body having a pressing end protruding from a tip thereof to apply a biasing force to the pressing end, and it is preferable that the pressing end protrudes within the recess and is a plunger member that contacts the pressure-receiving portion of the mold to bias the pressing end.

[0010] In addition, in the present invention, it is preferable that the mounting portion has a retaining structure formed around the opening of the recess, causes the plate surface portion to protrude downward through an opening between the retaining structures, and engages a portion of one side of the mold body other than the plate surface portion to retain the stamping mold within the recess.

[0011] In the present invention, it is preferable that the mounting portion is formed approximately in a T-slot, with the width dimension of the opening of the recess narrowing stepwise from the inside of the recess.

[0012] In the present invention, it is preferable that the mounting section has a heater for heating the pressing die mounted on the mounting section to a predetermined temperature. It is also preferable that the mounting section is provided with a temperature adjustment section for controlling the heater to a set temperature.

[0013] In the present invention, it is preferable that an insertion opening for inserting the die into the recess is formed on one longitudinal side of the recess of the mounting portion, and that a locking portion for positioning the die is provided on the other longitudinal side. Effect of the Invention

[0014] According to the stamping die holder for a foil stamping machine of the present invention, when stamping, the mounting part with the stamping die mounted thereon advances to the object, and the biasing part biases a plurality of points on the pressure receiving part of the stamping die while the plate surface part presses against the object with the foil interposed therebetween to stamp the foil. Therefore, even if the plate surface part of the stamping die is mounted on the stamping die holder at an inclination with respect to the surface of the object to be stamped, the biasing part biases a plurality of points on the pressure receiving part of the stamping die while pressing the plate surface part to stamp the object, so that the biasing part automatically corrects the inclination of the plate surface part so that the plate surface part becomes parallel to the stamping part of the object and can press straight.

[0015] Therefore, even without precise adjustments and without laborious adjustments, the plate surface of the stamping die can be pressed evenly to achieve high-quality foil stamping, there is no bias in the embossing, and the excellent effect of being able to stamp beautiful characters or patterns on an object that conforms to or corresponds to the plate surface can be achieved. [Brief description of the drawings]

[0016] [Figure 1] 1 is a longitudinal cross-sectional view of a stamping die holder for a foil stamping machine with a stamping die attached thereto according to an embodiment of the present invention; FIG. [Diagram 2] 2 is a perspective view from above of the foil stamping die holder of FIG. 1 before a die is attached to the foil stamping die holder. FIG. [Diagram 3] 2 is a perspective view from below of the stamping die holder for the foil stamping machine of FIG. 1 before a stamping die is attached thereto. FIG. [Figure 4] FIG. 1 is an explanatory diagram of the main body of the die holder, where (a) is a view from the direction in which the die is attached (the length direction of the recess), (b) is a view from the direction in which the heater is attached, (c) is a view from above, (d) is a view from the opposite direction to (b), and (e) is a view from the opposite direction to (a) from the side where the locking part is attached. [Diagram 5] 11A and 11B are explanatory views of a locking portion for positioning a pressing die, in which (a) is a view from the opposite mounting direction, and (b) is a view from above. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

[0018] FIG. 1 is an explanatory diagram of a stamping die holder for a foil stamping machine according to an embodiment of the present invention, FIGS. 2 and 3 are explanatory diagrams of the stamping die holder for a foil stamping machine before a die is attached, and FIG. 4 is an explanatory diagram of the stamping die holder for a foil stamping machine.

[0019] As shown in Figures 1 to 3, the embodiment is a stamping die holder 16 having a mounting portion 12 to which a stamping die 10 for foil stamping can be attached and detached, and is provided on a foil stamping machine A to move the stamping die 10 attached to the mounting portion 12 toward and away from an object 14 to perform foil stamping.

[0020] The foil stamping machine A has a structure in which the die holder 16 is moved up and down by a drive unit 18 (partially shown) to which the die holder 16 is attached at the bottom. The die holder 16 is made of a roughly rectangular metal material, and is fixed to the bottom of the drive unit 18 by a screw 18a which is screwed into a screw hole (female screw) 16c of the die holder 16.

[0021] The foil stamping machine A is used for foil stamping various products such as business cards, papers, stationery, etc. as objects 14. In Fig. 1, reference numeral 14a denotes a surface of the object 14 to be foil stamped, and reference numeral 14b denotes a platform on which the object 14 is placed.

[0022] The die 10 has a plate-shaped die body 10a, a plate surface portion 10b arranged on one side of the die body 10a and having letters and patterns molded in a concave-convex shape to be pressed against the target surface of the object 14, and a pressure-receiving portion 10c formed on the other side of the die body 10a to which a pressing force from the die holder 16 is applied.

[0023] The pressure-receiving portion 10c is formed flat or planar. The pressure-receiving portion 10c may have some unevenness as long as it can receive the pressing force. It is preferable that the stamping die 10 and the stamping die holder 16 for the foil stamping machine are made of metal with good thermal conductivity overall (a single layer or laminated structure of copper alloys such as gunmetal, various metals, and various alloys). The stamping die 10 may be made of the same material for the die body 10a and the plate surface portion 10b, or may be made of different materials.

[0024] As shown in Figures 2 to 4, the mounting portion 12 of the die holder 16 has a recess 12a into which the die body 10a fits, a holding structure 20 that holds the plate surface portion 10b protruding in the pressing direction, and a biasing portion 22 that presses multiple points (six points are appropriate as in the embodiment) of the pressure-receiving portion 10c of the die body 10a within the recess 12a with a pressing end portion 22a to bias it toward the plate surface portion 10b.

[0025] In the foil stamping machine A, as shown in FIG. 1, the stamping die 10 is attached to the mounting section 12, and the biasing section 22 biases multiple points of the pressure-receiving section 10c of the stamping die 10 while the plate surface section 10b presses against the object 14 in the direction of arrow A' with the foil 24 interposed therebetween, thereby performing foil stamping.

[0026] The foil 24 may be made of various materials such as precious metals, various metals, laminated films thereof, and laminated films of metal films and resin substrate layers.

[0027] The structure of each of the main parts of the foil stamping machine A will be described in detail below. [Drive unit 18] 1, the drive unit 18 is structured to move downwards with pressure applied by a manual drive mechanism (an electric drive mechanism if necessary) such as a lever or lever not shown. The drive unit 18 moves the die holder 16 fixed to its lower portion downwards by applying pressure from the drive unit 18, so that the die 10 can be pressed against the object 14 by the pressure applied by the drive unit 18.

[0028] [Using portion 22] As shown in FIG. 1, the biasing portion 22 is a plunger member in which an elastic body such as a metal coil spring that applies a biasing force to the pressing end 22a by protruding the pressing end 22a from the tip is housed in a cylindrical housing body 22b.

[0029] A plurality of urging portions 22 are provided, and have a function of pressing end portions 22a protruding within recess 12a of mounting portion 12 and contacting pressure-receiving portion 10c of press die 10 to urge it.

[0030] In this embodiment, the plunger member of the biasing portion 22 is a ball plunger that uses a ball at the pressing end 22a and biases with an elastic body.

[0031] The urging part 22 has a male screw thread formed on the outer periphery of the storage body 22b. Furthermore, the body (base body) 16a of the stamping die holder 16 for the foil stamping machine has female screw mounting holes 16b formed therethrough from top to bottom for mounting the urging part 22. The urging part 22 is detachably mounted to the stamping die holder 16 by screwing (screwing) the male screw on the outer periphery of the storage body 22b into the female screw on the inner periphery of the mounting hole 16b. The structure is such that the installation position of the urging part 22 in the mounting hole 16b can be adjusted by raising or lowering the screw-in position of the storage body 22b.

[0032] The die holder 16 of the embodiment is provided with multiple biasing portions 22, so that when the user operates the mounting portion 12 with the die 10 attached thereto to move toward the object and press it to foil stamp, the multiple biasing portions 22 each bias multiple points on the pressure-receiving portion 10c (the back side of the plate surface portion 10b) of the die 10, while the plate surface portion 10b presses against the foil stamping surface 14a of the sheet-like object 14 with the foil 24 interposed therebetween to stamp with foil.

[0033] Since multiple biasing portions 22 bias multiple points of the pressure-receiving portion 10c, the multiple biasing portions 22 are structured to automatically and appropriately correct the contact angle of the plate surface portion 10b with the foil stamping surface 14a of the object 14 by using their elastic force. Therefore, the plate surface portion 10b contacts the stamping surface 14a flatly and uniformly, so that the stamping can be performed on the target surface 14a without causing any chips or breaks in the foil.

[0034] Here, the biasing force of the pressing end 22a is set by the elastic force of the built-in spring in the biasing portion 22 itself, but by adjusting the position of the biasing portion 22 in the die holder 16, the protruding position of the pressing end 22a within the recess 12a can be adjusted, making it possible to easily set the upper and lower positions at which the pressing force is applied to the die 10 and the pressing force.

[0035] Specifically, by adjusting the protruding positions of the multiple urging parts 22 in the respective recesses 12a so that they are even, it is possible to apply an even and uniform force to the pressure-receiving part 10c of the press die 10. Also, by adjusting the protruding positions of the pressing ends 22a overall in the upward or downward direction, it is possible to adjust the urging force applied to the pressure-receiving part 10c to be weaker or stronger.

[0036] In this embodiment, the biasing portion 22 uses a ball plunger, and is structured so that the die body 10a of the pressing die 10 is slid and inserted into the recess 12a from the side. Since the pressing end 22a of the protruding ball rolls and contacts the pressure-receiving portion 10c of the pressing die 10, the pressing die 10 can be smoothly removed or slid into the recess 12a when being removed or inserted.

[0037] In addition to a ball plunger using a ball at the pressing end of the urging portion 22, a pin plunger can be used in which a rod-shaped body such as a pin is used at the pressing end and is urged out by an elastic body.

[0038] In addition, the pin plunger used in the biasing portion 22 can be an index plunger in which the position of the pin inserted or removed can be adjusted by operating a knob.

[0039] [Pushing die holder 16] FIG. 4 is a detailed view of the main body 16a of the die holder 16, and FIG. 5 is a detailed view of a locking portion 28 attached to the main body 16a. As shown in Figs. 1 to 4, the press die holder 16 has a main body 16a in the shape of a roughly thick plate, and a mounting portion 12 having a recess 12a and a holding structure 20 are formed in the lower part of the main body 16a.

[0040] More specifically, the mounting section 12 has a shelf-like structure 20 that protrudes in opposition to the periphery of the opening 12a1 of the recess 12a, as shown in Fig. 1. The holding structure 20 protrudes the plate surface portion 10b downward through the opening 12a1 between the opposing holding structures 20, and engages a portion 10a1 on one side of the mold body 10a other than the plate surface portion 10b, thereby holding the pressing mold 10 in the recess 12a.

[0041] 4, the mounting portion 12 has a recess 12a formed in a groove shape with an opening 12a1 at the bottom of the die holder 16, and a pressing end 22a of the biasing portion 22 protruding from a ceiling surface 12b, which is the upper wall surface within the recess 12a. The holding structure 20 is formed around the opening 12a1 of the recess 12a with a distance w (see FIG. 3).

[0042] An insertion opening 26 for inserting the press die 10 into the recess 12a is formed on one longitudinal side of the recess 12a of the mounting portion 12, and a plate-shaped locking portion 28 used to position the press die 10 is provided on the other longitudinal side.

[0043] In the mounting portion 12, as shown in Figures 2 and 3, the recess 12a located below the die holder 16 is formed roughly as a T-slot with the width dimension of its opening 12a1 narrowing stepwise from the inside of the recess 12a.

[0044] Facing the inside of the recess 12a are a ceiling surface (upper wall surface) 12b and side surfaces 12c. Retaining structures 20, 20 are adjacent to an opening 12a1 at the bottom of the recess 12a on the left and right. An insertion opening 26 for inserting the die 10 into the recess 12a is formed on one side along the surfaces of the ceiling surface 12b and the side surfaces 12c, 12c (the side marked "F" on the die holder 16), and a plate-shaped locking portion 28 for positioning the die 10 is provided on the other side along the surfaces (the side marked "E" on the die holder 16).

[0045] The locking portion 28 is formed to have approximately the same length and width dimensions as the other side (side E) of the die holder 16. The locking portion 28 is a roughly plate-like body when used alone, as shown in Fig. 5, and is fixed to the main body 16a by screws or the like. The locking portion 28 has holes 28a, 28a through which the screws can be passed.

[0046] [Installation of heater 30 and temperature adjustment unit 32] The mounting section 12 has a heater for heating the mounted stamping die to a predetermined temperature. In order to heat the mounting portion 12, the die holder 16 is provided with a heater inside the die holder 16 that heats the mounting portion 12 and heats the die 10 to a predetermined temperature suitable for foil stamping. The heater 30 is equipped with a temperature adjustment portion 32 such as a thermostat for controlling the heater 30 to an appropriate temperature, making it possible to set the temperature of the die 10.

[0047] Specifically, the heater 30 in the shape of a round rod is mounted in a hole 30a from one side (G side) to the other side (H) of the die holder 16 shown in FIG. 3, and the temperature adjustment unit 32 is mounted in a hole 32a. Fig. 4 shows the main body 16a of the die holder 16. The main body 16a is formed with screw holes 30b for the heater 30 formed in the die holder 16, screw holes 32b for the temperature adjustment section 32, and screw holes 28b for the locking section 28. Screws threaded into these screw holes are not shown in Figs. 1 to 3 etc. It is preferable to provide a heat-insulating layer 34 made of a heat-resistant silicone material around the die holder 16 as shown by the two-dot chain line in Fig. 4(c) to prevent heat radiation from the die holder.

[0048] [Holding structure 20] The holding structure 20 of the mounting part 12 is configured to protrude like a shelf with a space (gap) w provided around the lower opening of the recess 12a so as to narrow the lower opening, as shown in Fig. 3. It is preferable that the plate-like surface of the holding structure 20 and the ceiling surface 12b of the recess 12a are set parallel or nearly parallel.

[0049] The press die 10 inserted into the recess 12a from the insertion opening 26 is attached in a state where it is sandwiched between the holding structure 20 and the ceiling surface 12b, with the plate surface portion 10b protruding downward from the gap of the distance w between the holding structures 20, 20. At the same time, the rear end of the die body 10a of the press die 10 is positioned by the locking portion 28, and is positioned from the left and right by the side surfaces 12c, 12c of the recess 12a.

[0050] [Operation and Effects of Foil Stamping Die Holder 16] In the embodiment of the stamping die holder 16 for a foil stamping machine, as shown in FIG. 1, when performing foil stamping with the foil stamping machine, the stamping die holder 16 is advanced (lowered) toward the target object 14 by the driving force of the drive unit 18.

[0051] At this time, the stamp 10 is attached in the recess 12a of the attachment portion 12 of the stamp holder 16, and the biasing portion 22 biases multiple points of the pressure-receiving portion 10c of the stamp 10 while the plate surface portion 10b presses against the object 14 with the foil 24 between them to perform foil stamping. Therefore, even if the plate surface portion 10b of the stamp 10 is attached to the stamp holder 16 at an angle to the foil stamping area (the foil stamping surface of the object 14), the biasing portion 22 can press and bias multiple points of the pressure-receiving portion 10c of the stamp 10 while pressing it, so that the biasing portion 22 automatically corrects the angle of the plate surface portion 10b so that the plate surface portion 10b becomes parallel to the foil stamping area of ​​the object 14 and can press straight.

[0052] Therefore, even without laborious and precise adjustments, the plate surface portion 10b of the stamping die 10 can be pressed evenly without time-consuming adjustments, and good quality foil stamping can be achieved, with no bias in the stamping, and beautiful letters and patterns can be stamped in accordance with or corresponding to the plate surface portion 10b.

[0053] Furthermore, replacing the die 10 is simply a matter of pulling out the previous die 10 from the insertion port 26 of the die holder 16 (see Figures 2 and 3) and inserting the next die 10 to be used through the insertion port 26; the side of the die 10 can be positioned with the side 12c of the recess 12a (left and right positioning is possible), and at the same time, the rear end of the die 10 can be positioned by simply abutting it against the engaging portion 28 (front and back positioning is possible), so replacing the die 10 is very simple and foil stamping work can be performed immediately with the next die 10.

[0054] From the above, the foil stamping machine using the foil stamping holder of the embodiment can realize foil stamping on a small amount of a wide variety of objects. Since the foil stamping work can be done not only in a factory but also in a storefront, for example, an order for foil stamping of a product can be immediately handled, which is very convenient and useful because it improves productivity.

[0055] In the embodiment, a structure in which multiple biasing parts are used to bias multiple points on the pressure-receiving part has been exemplified, but in other cases, such as when the inclination of the mold 10 can be corrected by biasing one point on the mold 10 with a single biasing part, the biasing part can also be single. Furthermore, as shown in FIG. 4(c), by providing a heat-retaining layer 34 made of heat-resistant silicone material, indicated by the dotted line in the figure, around the die holder 16 in an appropriate area, this heat-retaining layer 34 can prevent heat loss from the die holder 16, making the temperature of the die more stable and improving the quality and productivity of foil stamping. [Industrial Applicability]

[0056] The stamping die holder for a foil stamping machine of the present invention can be used for stamping dies of various materials. [Explanation of symbols]

[0057] 10 Press Mold 10a type main body 10a1 Parts other than the printing surface 10b Hanmen section 10c Pressure receiving part 12 Mounting part 12a recess 12a1 opening 12b Ceiling surface 12c side 14 Object 14a Target surface 16 Press mold holder 16a Main unit 18 Drive unit 20 Retention structure 22 Pressurizing section 22a Pressing end 22b Containment body 24 Foil 26 Insertion port 28 Locking part 30 Heater 32 Temperature adjustment section A Foil stamping machine w Interval

Claims

1. A stamping die holder for a foil stamping machine has a mounting part to which a stamping die for foil stamping can be attached and detached, and the stamping die mounted on the mounting part moves toward and away from an object, The pressing die has a plate-shaped main body, a plate surface portion arranged on one surface side of the main body and pressed against an object, and a pressure-receiving portion formed on the other surface side of the main body and receiving a pressing force from the pressing die holder, the mounting portion has a recess into which the mold body fits, a holding structure that holds the plate surface portion in a state in which it protrudes in the pressing direction, and a biasing portion that biases the pressure-receiving portion of the mold body toward the plate surface portion by pressing a plurality of points of the pressure-receiving portion of the mold body with a pressing end portion within the recess, This stamping die holder for a foil stamping machine is characterized in that, as the mounting part to which the stamping die is attached moves toward the object, the biasing part biases multiple points of the pressure-receiving part of the stamping die, while the plate surface part presses against the object with foil between them to stamp the foil.

2. The stamping die holder for a foil stamping machine as described in claim 1, characterized in that the urging portion is an elastic body contained within a housing body, with a pressing end protruding from its tip to apply a urging force to the pressing end, and is a plurality of plunger members whose pressing ends protrude within the recess and come into contact with the pressure-receiving portion of the stamping die to urge the stamping portion.

3. The stamping die holder for a foil stamping machine as described in claim 1 or 2, characterized in that the mounting portion has a holding structure formed around the opening of the recess, the plate surface portion protrudes downward through an opening between the holding structures, and engages a portion of one side of the die body other than the plate surface portion to hold the stamping die in the recess.

4. 4. The stamping die holder for a foil stamping machine according to claim 3, wherein the mounting portion is formed into a roughly T-shaped groove in which the width dimension of the opening of the recess is stepped narrower than the width of the inside of the recess.

5. 5. The stamping die holder for a foil stamping machine according to claim 1, wherein the mounting portion has a heater for heating the mounted stamping die to a predetermined temperature.

6. 6. The stamping die holder for a foil stamping machine according to claim 5, wherein the mounting portion is provided with a temperature adjusting portion for controlling the heater to a set temperature.

7. A die holder for a foil stamping machine as described in any one of claims 1 to 4, characterized in that an insertion opening for inserting the die into the recess is formed on one side of the length of the recess in the length direction, and a locking portion for positioning the die is provided on the other side of the length direction.

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