JP2018103465A - Reversal type stamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reversal type stamp having a simplified structure allowing maintenance of a stamping body to be performed easily.SOLUTION: A reversal type stamp 10 comprises: an outer cylindrical body 30; an inner cylindrical body 20 fitted into the outer cylindrical body 30 in a relatively movable manner; a coil spring 60 constantly energizing the inner cylindrical body 20 toward a protruding direction in the outer cylindrical body 30; a reversal body 40 reversed and returned in conjunction with slide movements of the outer cylindrical body 30 and the inner cylindrical body 20; and a stamping body 41 adhered to one surface of the reversal body 40. A joint part 41a where the stamping body 41 is jointed to the reversal body 40 is configured to protrude outside of lower openings of the inner cylindrical body 20 and outer cylindrical body 30 when the inner cylindrical body 20 is retreated into an innermost part of the outer cylindrical body 30. Thus, end parts of the lower openings do not interfere with replacement of the stamping body 41 and the like.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a reversal type stamp that can be printed by reversing a printing body.

  Conventionally, an outer cylinder that is also a handle part at the time of stamping and an inner cylinder that is slidable with respect to the outer cylinder, the inner cylinder is resisted against the urging force of an elastic member provided in the outer cylinder. There is known a reversal type stamp in which the printed body is reversed when it is slid in the retracted direction, and the marking surface is exposed from the lower opening. For example, in Patent Document 1, in order to enable the cleaning of the marking surface and the replacement of the printed body without removing the elastic member, the inner cylindrical body is further moved from the position where the marking surface and the lower opening of the inner cylindrical body are on the same plane. An inversion type stamp provided with a lock mechanism for holding the inner cylinder at a position slightly pushed inward of the outer cylinder is disclosed.

JP 2014-156040 A

  However, the reversal type stamp of Patent Document 1 has a structure in which the printing surface of the printing body and the lower opening of the inner cylinder are locked at a position on substantially the same plane. There has been a problem that it is difficult to replace the printed body. In addition, there is a case where the lock is inadvertently locked at the time of stamping. If the locked stamp is left as it is, there is a possibility that the airtightness of the ink pad is lost and the ink is dried.

  The present invention has been made in view of such conventional problems, and has a simplified structure that does not include a lock mechanism that holds the print body at a position where it is exposed to the outside. The purpose is to provide a reversible stamp that allows easy maintenance such as cleaning.

  In order to solve the above-described problems, the present invention provides an outer cylinder, an inner cylinder that can move relative to the outer cylinder, and an elastic that constantly biases the inner cylinder in the protruding direction in the outer cylinder. A reversing type stamp comprising a member and a printed body joined to a reversing body that reverses and returns in conjunction with the relative movement, and at least when the inner tubular body is retracted inside the outer tubular body It is characterized in that the junction between the reversing body and the printing body projects out from the lower opening.

  Moreover, it is preferable that the said inversion type | mold stamp is provided so that the said elastic member can be attached or detached in the said outer cylinder.

  According to the reversal type stamp according to the present invention, when the inner cylinder is retracted inside the outer cylinder, at least the joint between the reversal body and the print body protrudes outside the lower opening. Therefore, the lower opening end of the inner cylinder or the outer cylinder does not become an obstacle, and the print body can be easily replaced or cleaned. Further, since the elastic member for urging the inner cylinder is detachably provided in the outer cylinder, the print member can be protruded beyond the lower opening by removing the elastic member. Therefore, maintenance of the print body can be easily performed without a lock mechanism for holding the print body at a position where it is exposed to the outside.

It is the front view and side view of an inversion type stamp by one embodiment of the present invention. It is II-II sectional drawing of the reversal type stamp shown in Drawing 1 (a). It is a III-III sectional view of the reversal type stamp shown in Drawing 1 (b). It is a figure for demonstrating the support structure of a printing body. It is a figure for demonstrating the structure of a printing body and an ink cartridge. It is a lower part sectional view of a reversal type stamp when an inner cylinder is most degenerated. It is a flowchart for demonstrating the marking operation | movement of a reversal type | formula stamp.

  Hereinafter, with reference to the drawings, a configuration of a reversal stamp 10 according to a preferred embodiment of the present invention will be described. FIG. 1A is a front view of the reversing stamp 10, and FIG. 1B is a side view of the reversing stamp 10. 2 is a cross-sectional view taken along the line II-II shown in FIG. 1A, and FIG. 3 is a cross-sectional view taken along the line III-III shown in FIG.

  The reversal type stamp 10 always urges the inner cylinder 20 in the protruding direction in the outer cylinder 30, the inner cylinder 20 fitted so as to be movable relative to the outer cylinder 30, and the outer cylinder 30. A coil spring 60 that is a first elastic member, a reversing body 40 that reverses and returns in conjunction with the sliding operation of the outer cylindrical body 30 and the inner cylindrical body 20, and a printing body 41 that is joined to one surface of the reversing body 40 by adhesion or the like. And. The marking surface of the printing body 41 according to the present embodiment is circular, and the outer cylinder body 30 and the inner cylinder body 20 are substantially cylindrical in conformity with the printing body 41 and the like. The outer cylinder 30 is a container that accommodates the ink cartridge 50, the inner cylinder 20, the printing body 41, and the like, which will be described later, and a member that also functions as a handle (grip) when the reversible stamp 10 is imprinted. It is. In addition, the outer cylindrical body 30 includes, for example, a cylindrical portion 31 and a cap portion 32 that can be attached to and detached from the cylindrical portion 31 so that the coil spring 60 can be easily attached and detached and the ink cartridge 50 can be easily replaced. Composed. The cap portion 32 can be detachably attached by an appropriate means such as a fitting lock mechanism so as to close the upper portion of the cylindrical portion 31.

  For example, a protrusion 31 a for preventing rolling of the cylindrical stamp 10 may be formed on the rear side of the outer wall of the cylindrical portion 31. Further, the protruding portion 31a can be used as a mark indicating the direction of the stamp 10 at the time of marking. In the present embodiment, the protrusion 31a is formed at a lower position with respect to the imprint after transfer onto the paper surface. That is, by always stamping the protruding portion 31a of the stamp 10 toward the front, the vertical direction of the imprint can be properly adjusted.

  Further, a window hole 31b for confirming whether the ink cartridge 50 is correctly inserted at a predetermined position in the back may be provided in a part of the cylindrical portion 31 of the outer cylindrical body 30.

  The inner cylinder 20 is formed of a generally cylindrical hollow member having an open portion 21 on the side (front side) on which the printing surface of the printing body 41 rotates. An ink cartridge 50 is fitted inside the inner cylinder 20. The outer diameter of the inner cylinder 20 corresponds to the inner diameter of the outer cylinder 30 described above, and the upper part of the inner cylinder 20 is inserted from the lower open portion of the outer cylinder 30 so as to be relatively movable.

  On both the left and right sides of the inner cylindrical body 20, long slit holes 20a and 20a are formed along the top and bottom, which is the sliding direction. Through the slit holes 20a, 20a, horizontal shafts 42, 42 of a reversing body 40 that is rotatably supported by the inner wall portion of the outer cylinder 30 are inserted. That is, as shown in FIG. 4, in the inner cylinder 20, the reversing body 40 moves up and down in conjunction with the pressing operation of the outer cylinder 30 (however, the stroke range is limited by the length of the slit hole 20 a), The rotation of the reversing body 40 around the horizontal axis 42 penetrating the slit hole 20a is allowed.

  The outer cylinder 30 accommodates the inner cylinder 20 so as to be relatively movable via a coil spring 60 that is a first elastic member. The coil spring 60 in a compressed state is in contact with the upper part (outer frame case 51) of the ink cartridge 50 fitted to the inner cylinder 20 and constantly urges the inner cylinder 20 toward the reversal body 40. . When the stamp 10 is not used, the inner cylinder 20 is held at a position that protrudes most from the outer cylinder 30. At this time, the O-ring 43 which is a seal member provided in the reversing body 40 is pressed against the inner wall of the end of the ink cartridge 50 (more specifically, the seal surface formed at the open end of the outer frame case 51). As a result, the ink cartridge 50 is blocked, and the ink pad 52 inside is prevented from being dried.

  Further, a reversing guide 22 for reversing the reversing body 40 that joins the printing body 41 is formed along the slit hole 20 a on the inner wall portion of the inner cylindrical body 20. The reversing guide 22 of the present embodiment is formed having a substantially semicircular middle groove 22b between two cylindrical small protrusions 22a and 22c. However, the reversing guide is not limited to the mode described here as long as it is a gear body or a cam mechanism that meshes so as to reverse the reversing body 40 as the reversing body 40 moves up and down.

  As described above, the ink cartridge 50 for supplying ink to the printing body 41 is inserted into the upper portion of the inner cylinder 20. That is, the ink cartridge 50 is detachably held inside the inner cylinder 20. In the ink cartridge 50, a movable container 53 that houses an ink pad 52 can be slid up and down in the housing space of the outer frame case 51. The moving direction of the movable container 53 in the ink cartridge 50 and the sliding direction of the inner cylinder 20 in the outer cylinder 30 are the same.

  In the ink cartridge 50, the movable container 53 that accommodates the ink pad 52 is elastically supported by a coil spring 54 that is a second elastic member provided in the outer frame case 51. The coil spring 54 constantly applies an elastic force to the back surface (upper surface) of the movable container 53 in a compressed state, and constantly urges the movable container 53 toward the printing body 41. When a relatively hard ink pad 52 is employed, the elastic modulus (spring constant) of the coil spring 54 is preferably set smaller than that of the ink pad 52.

  The ink impregnated in the ink pad 52 can be used as appropriate regardless of whether it is pigment-based, dye-based, oil-based, or water-based. For example, as a quick-drying ink for imprinting on hard-to-absorb paper such as coated paper, plastic film, aluminum, and iron, or non-absorbent material, it is possible to use an oil-based ink obtained by dissolving and mixing a colorant or resin in a quick-drying solvent it can.

In this embodiment, a polyolefin fiber made of polyethylene (PE) and polypropylene (PP) is used as the material for the ink pad 52. In addition, the ink pad 52 has a two-layer structure in which the basis weight (fiber density) is different because the continuous printing property is better than that of a single layer. The two fiber layers can be bonded by, for example, heat fusion processing. For example, with respect to basis weight 0.23 g / cm ³ of the surface layer side contacting the stamp face, the basis weight of the substrate may be 0.15 g / cm ^3.
In this way, by increasing the fiber density on the surface layer side than on the substrate side, it is possible to create an ink flow from the substrate side to the surface layer side due to a difference in capillary force. Thereby, the transfer time of the ink to the printing body 41 can be shortened stably, and continuous printing property can be improved.

  When the stamp 10 is not used, the outer cylinder 30 is in an upper position where it is not pressed, and the upper surface of the printing body 41 is in contact with the lower surface of the ink pad 52 as shown in FIG. Conventionally, if the printing body 41 having unevenness on the printing surface is left in contact with the ink pad 52 for a long time, there is a concern that the ink pad 52 may be plastically deformed or sag. However, in the present embodiment, a structure in which the movable container 53 in which the ink pad 52 is housed is elastically supported through the coil spring 54 having an elastic modulus smaller than that of the ink pad 52 is employed. The transfer load 41 is relaxed. Therefore, it is possible to prevent the ink pad 52 from being deformed such as sag.

  In addition, the ink cartridge 50 has a structure that is closed by the reversal body 40 biased by the coil spring 60 as shown in FIG. More specifically, the seal surface 51a on the inner wall of the end of the ink cartridge 50 that receives the seal member provided on the reversing body 40 is formed in a tapered shape. In this embodiment, the printing surface of the printing body 41 is circular, and an O-ring 43 adapted to the diameter of the printing body is used as the reversing body 40. The seal surface 51a that receives the O-ring 43 is formed as an inclined surface that decreases in diameter as it goes to the center. By inclining the seal surface in this way, a larger force (force acting on the wedge) than that in contact with a flat surface acts, and the airtightness in the ink cartridge 50 can be improved. Since there is no need to increase the repulsive force of the coil spring 60, the pressing force at the time of stamping can be made smaller than before and the operability can be improved.

  Further, as shown in FIG. 6, the reversing stamp 10 of the present embodiment has a joining portion 41 a where the printed body 41 is joined to the reversing body 40 when the inner tubular body 20 is most contracted inside the outer tubular body 30. However, it is comprised so that it may protrude outside from the lower opening of the inner cylinder 20. As shown in FIG. In the case of a stamp of the type in which the entire inner cylinder 20 is retracted to the inside from the lower opening of the outer cylinder 30, it is preferable that the entire printing body 41 protrudes outward from the lower opening of the outer cylinder 30. Thereby, the end of the lower opening of the inner cylinder 20 or the outer cylinder 30 does not become an obstacle, and maintenance such as replacement and cleaning of the printing body 41 can be easily performed.

  In the reversible stamp 10 of the present embodiment, the coil spring 60 that constantly urges the inner cylinder 20 in the protruding direction is provided so as to be easily detachable by removing the cap portion 32 of the outer cylinder 30. Yes. If the coil spring 60 is removed from the outer cylinder 30 and is slid in the direction in which the inner cylinder 20 is retracted, the print body 41 can be protruded outside the lower opening of the inner cylinder 20. Therefore, the maintenance can be easily performed by projecting the printing body 41 to the outside without providing a lock mechanism for holding the printing body at a position where the printing body is exposed to the outside as in the prior art.

The operation of the reversal stamp 10 having the above-described configuration will be described with reference to FIG.
When the outer cylindrical body 30 of the stamp 10 is not pressed, the outer cylindrical body 30 and the inner cylindrical body 20 are in the extended state in which they are farthest apart. At this time, the printing surface of the printing body 41 comes into contact with the ink pad 52 and the ink is transferred. Further, the inside of the ink cartridge 50 is hermetically sealed through the O-ring 43 of the reversing body 40 biased by the coil spring 60.

  The reversing stamp 10 is printed by bringing the lower end of the inner cylinder 20 into contact with the paper surface P. When the stamp 10 is erected on the paper surface P and the outer cylinder 30 is pushed down against the repulsive force of the coil spring 60, the whole is contracted so that the inner cylinder 20 enters the outer cylinder 30. At this time, the reversing body 40 pivotally supported by the inner wall portion of the outer cylindrical body 30 also moves downward in the inner cylindrical body 20 with the horizontal shaft 42 being guided by the slit hole 20a of the inner cylindrical body 20.

  When the reversing body 40 of the printing body 41 descends in conjunction with the pressing operation of the outer cylindrical body 30, first, the first semicircular groove 40 a formed at the rear lower end of the reversing body 40 is the upper small protrusion of the inner cylindrical body 20. 22a is contacted (FIG. 7 (I)). At this time, as the reversing body 40 descends, the rear side of the reversing body 40 is pushed up by the upper small protrusion 22a, and the reversing body 40 starts rotating around the horizontal axis 42 (FIG. 7 (II)). When the rotation angle of the reversing body 40 reaches 90 °, the central semicircular protrusion 40b engages with the reversing guide 22 so as to enter the middle groove 22b (FIG. 7 (III)). When the reversing member 40 further rotates, the lower small protrusion 22c pushes up the semicircular protrusion 40b. As a result, the reversing body 40 is finally turned 180 ° at the lower end position of the inner cylindrical body 20, and the printing surface (printing body 41) faces downward (FIG. 7 (IV)). When a pressing force is applied to the outer cylinder 30 from above while the printing body 41 and the paper surface P are in contact, the ink of the printing body 41 is transferred to the paper surface P and printing is performed.

  When the pressing of the outer cylinder 30 is released after the marking is completed, the inner cylinder 20 returns to the initial position by the repulsive force of the compressed coil spring 60. In conjunction with this, the reversing body 40 also moves in the inner cylindrical body 20 and returns to the initial position. However, the printing surface is reversed upward by an operation reverse to the engaging operation with the reversing guide 22 described above.

  Further, the reversal type stamp 10 is in a state where the reversal body 40 is pressed against the ink pad 52 side by the repulsive force of the coil spring 54 and is in close contact therewith. In this embodiment, since the ink pad 52 is elastically supported by the cartridge 50 via the coil spring 54 having a spring constant smaller than that of the ink pad 52, the transfer load of the printing body 41 on the ink pad 52 is reduced. Thereby, for example, even when a relatively hard ink pad 52 having a high fiber density in the surface layer is employed, it is possible to prevent the ink pad 52 from being deformed. Further, since the ink pad 52 is elastically supported by the coil spring 54, the transfer load of the ink to the printing body 41 does not become larger than necessary, and can be adjusted appropriately. In this way, by maintaining the flatness of the ink pad 52 and adjusting the transfer load due to the dimensional change of the molded product (printed surface portion or the like), it is possible to prevent imprint blur or stain from occurring.

  Further, in the reversible stamp 10 according to the present embodiment, when the inner cylinder 20 is most contracted inside the outer cylinder 30, the entire print body 41 is formed from the lower opening of the inner cylinder 20 or the outer cylinder 30. Is also configured to protrude outward. Therefore, the lower opening end of the stamp 10 does not become an obstacle, and the printing body 42 can be easily replaced or cleaned. Further, since the coil spring 60 for urging the inner cylinder 20 is detachably provided in the outer cylinder 30, the print body 41 can be easily removed by simply removing the coil spring 60 and sliding the inner cylinder 20. Can be protruded. Therefore, it is possible to easily perform maintenance of the print body 41 while having a simplified structure that does not include a conventional lock mechanism.

DESCRIPTION OF SYMBOLS 10 Reverse type stamp 20 Inner cylinder 22 Inversion guide 30 Outer cylinder 31 Cylindrical part 32 Cap part 40 Inverted body 41 Printed body 41a Joining part 42 Horizontal shaft 43 O-ring (seal member)
50 Ink cartridge 51 Outer frame case 51a Seal surface 52 Ink pad 53 Movable container 54 Coil spring (second elastic member)
60 Coil spring (first elastic member)

Claims (2)

An outer cylindrical body, an inner cylindrical body that can move relative to the outer cylindrical body, an elastic member that constantly urges the inner cylindrical body in the protruding direction in the outer cylindrical body, and a reverse return in conjunction with the relative movement A reversing stamp comprising a printed body joined to a reversing body,
A reversing type stamp characterized in that, when the inner cylindrical body is retracted into the outer cylindrical body, at least the joint between the reversing body and the printing body protrudes outside the lower opening. . The inversion stamp according to claim 1, wherein the elastic member is detachably provided in the outer cylinder.

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