JP7213546B2 - rotation mark - Google Patents

Description

Article 30, Paragraph 2 of the Patent Law applied Date of sale January 8, 2019 Sales destination Arai Co., Ltd.

The present invention relates to rotary stamps, such as date stamps, with printing belts.

For example, the print belt for date stamps has printed parts at regular intervals on the surface of the base for printing numbers and era names. It is made of porous rubber to carry out. Such a printed part is inferior in structural strength to non-porous rubber stamps, and if the date stamp is used in a rough and inappropriate manner, the bulging start end of the character pattern will be torn and damaged. I have something to do. For example, when the character pattern is repeatedly slid back and forth while being pressed against the paper surface, or when the printing unit is repeatedly rotated while being pressed against the paper surface, the bulging starting end of the character pattern portion Tear so that the part can be rolled up. It has been reported that such cases have occurred, for example, at accounting counters and convenience stores that routinely collect public utility charges, and it has been necessary to take some kind of countermeasure.

In order to prevent the character pattern from tearing, it is effective to increase the structural strength of the printed portion. In order to increase the structural strength of the printed portion, for example, in the rubber printed body of Patent Document 1, a trapezoidal stamp face holding portion is formed on the surface of the stamp base, and a trapezoidal stamp face forming portion is formed from the tip surface of the stamp face holding portion. The printed portion is formed in a stepped shape by bulging. Further, when the width of the stamp surface portion contacting the paper surface is a, the width of the bottom surface of the stamp surface forming portion is b, the width of the top surface of the stamp surface holding portion is c, and the width of the bottom surface of the stamp surface holding portion is d, the formula (a< The width of each part is set so as to satisfy b<c<d).

Japanese Patent No. 4716489

According to the rubber printed body of Patent Document 1, in which the printed portion is formed in a terrace shape, deformation of the printed surface forming portion during stamping can be suppressed, and damage to the printed surface forming portion can be prevented. However, according to the findings of the present inventors, the rubber printed body in which the printed portion is formed in a terraced shape shows a certain degree of durability compared to the conventional rubber printed body that is not in a terraced shape, but ultimately the conventional rubber printed body As with the rubber printed body of No. 2, the bulging starting end of the stamp face forming portion (character pattern portion) is likely to be torn and damaged, and the structural strength is not much different from that of the conventional rubber printed body.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a rotary stamping belt which can be stamped properly over a long period of time by increasing the structural strength of the printing belt to improve its durability.

The present invention is directed to a rotary stamp provided with a print belt 13 that is rotatably operated by an adjustment dial 11 . The printing belt 13 includes a base portion 14, a group of base blocks 15 formed to bulge at regular intervals on the surface of the base portion 14, and a character pattern 16 formed in a bulging shape on a protruding end surface 15a of the base block 15. and a rib 35 formed in a bulging shape on a portion of the protruding end surface 15a of the base block 15 excluding the portion where the character pattern 16 is formed. The character pattern 16 is formed in a terraced shape including a printing surface 16a composed of mirror characters and a peripheral surface 16b connecting the printing surface 16a and the tip end surface 15a of the base block 15. As shown in FIG. The dimension h of protrusion of the rib 35 from the tip end surface 15a of the base block 15 is set smaller than the dimension H2 of protrusion of the character pattern 16 from the tip end face 15a of the base block 15 . The longitudinal ends of the ribs 35 are connected to the peripheral surface 16 b of the character pattern 16 .

The ribs 35 are straight ribs parallel to the width direction of the print belt 13 . The ends of the ribs 35 in the length direction are connected to the peripheral surface 16b of the character pattern 16 at a plurality of locations in the character height direction of the character pattern 16 and in the middle.

A value (h/H2) obtained by dividing the dimension (h) of the protrusion of the rib 35 from the tip surface 15a of the base block 15 by the dimension (H2) of the protrusion of the character pattern 16 from the tip surface 15a of the base block 15. is preferably set to 0.2 or more and 0.5 or less.

In the rotary stamp of the present invention, ribs 35 are formed in a bulging shape in addition to the character pattern 16 on the protruding end face 15a of the base block 15 formed on the base portion 14 of the printing belt 13 . In addition, the longitudinal ends of the ribs 35 are connected to the peripheral surface 16 b of the character pattern 16 . According to the printing belt 13, the ribs 35 can increase the structural strength of the boundary portion between the base block 15 and the character pattern 16, that is, the starting end portion of the character pattern 16 protruding from the base block 15. It is possible to reliably prevent the character pattern 16 that has received the bulge from being torn from the bulging start end. Therefore, the durability of the printing belt 13 is enhanced, and a date stamp that can be properly stamped over a long period of time can be provided.

The ribs 35 are straight ribs parallel to the width direction of the printing belt 13 . At this time, it is desirable that the ends of the ribs 35 in the length direction are connected to the peripheral surface 16b of the character pattern 16 at a plurality of points in the character height direction of the character pattern 16 and in the middle. According to such a printing belt 13, the ribs 35 can reinforce the upper and lower ends in the character height direction of the character pattern 16, which are likely to tear, and at least two locations in the character height direction of the character pattern 16 can be reinforced with the ribs 35. Therefore, the structural strength of the starting end portion of the character pattern 16 protruding from the base block 15 can be reliably increased.

A value (h/H2) obtained by dividing the dimension (h) of the protrusion of the rib 35 from the tip surface 15a of the base block 15 by the dimension (H2) of the protrusion of the character pattern 16 from the tip surface 15a of the base block 15. is preferably set to 0.2 or more and 0.5 or less. If h/H2 is less than 0.2, the improvement in strength due to the addition of the ribs 35 is insufficient, and the character pattern 16 may be torn. On the other hand, if h/H2 exceeds 0.5, when the character pattern 16 is pressed against the paper with a large force during stamping, the ribs 35 may come into contact with the paper and cause rib-like stains. It should be noted that such printing defects tend to occur in rotary stamps that do not have a fixed printing body 3 and that are composed of a plurality of printing belts 13 .

FIG. 4 is a developed plan view of a printing belt that constitutes the rotary stamp of the present invention; It is a longitudinal side view of a rotation mark. FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1; FIG. 2 is a cross-sectional view taken along the line BB in FIG. 1; Fig. 2 is a plan view of a belt blank; 1 shows a molding die for a belt blank, (a) being a vertical cross-sectional view with the molding die opened, and (b) being a vertical cross-sectional view showing the molding state. 6A and 6B are six views of a printing belt; FIG. FIG. 10 is a plan view showing a modified example of ribs;

1 to 7 show embodiments in which the rotary stamp of the present invention is applied to date stamps. In FIG. 2, the date stamp consists of a main body case 1, a printing unit 2 housed inside the main body case 1, a fixed print body 3 fixed to the lower end of the main body case 1, and an upper end of the main body case 1. It is composed of a grip 4 and the like. The body case 1 is composed of a pair of outer cases 5 sandwiching the printing unit 2 in the front and rear thereof, and adjustment grooves 6 for exposing an adjustment dial 11, which will be described later, are formed in the front and rear walls thereof.

The printing unit 2 includes a gate-shaped frame 9 , a dial shaft 10 supported by the opposite wall of the frame 9 , five adjustment dials 11 supported by the dial shaft 10 , and a bridge 12 attached to the lower end of the frame 9 . , an adjusting dial 11 and five types of printing belts 13 wound around the bridge 12. - 特許庁The printing belt 13 includes a base portion 14 including a base fabric (not shown), a group of base blocks 15 formed to protrude from the surface of the base portion 14 at regular intervals, and a tip surface 15a of the base block 15. and a character pattern 16 formed in a bulging shape. An adjusting screw 17 and an adjusting nut 18 for adjusting the height of the printing surface of the printing unit 2 and an adjusting ring 19 for rotating the nut 18 are provided at the upper end of the frame 9 . The character pattern 16 in the present invention includes all letters for printing numbers, letters, alphabets, symbols, pictograms, and the like.

The fixed printed body 3 includes a stamp face holder 22 fitted on the lower end of the outer case 5 and a rubber printed body 23 fixed to the stamp face holder 22 . A printing window 24 for exposing the base block 15 of the printing belt 13 is opened at the front-rear center of the stamp face holder 22 and the rubber printing body 23 . The stamp face holder 22 is fixed to the outer case 5 by bolts 25 crossing the printing unit 2 on the upper side of the bridge 12 and nuts (not shown) screwed into the bolts 25 . When changing the date or the like, the bolt 25 or nut is loosened, the stamp face holder 22 is pulled down, and the printing window 24 is positioned below the rotation locus of the base block 15. - 特許庁

The printing belt 13 is formed using a belt blank 28 shown in FIG. 5 as a front stage material. For the belt blank 28, 12 types of five character patterns 16 for printing two types of year numbers 29, month numbers (1 to 12) 30, and two types of day numbers 31 are prepared in the vertical direction. Each character group 32 is formed by arranging three groups 32 in a horizontal row to form a flat plate. The upper and lower ends of the obtained belt blank 28 are adhered to form a cylinder, and five types of endless belt blanks 28 are obtained by cutting each of two year numerals 29, month numerals 30, and two day numerals 31. A printing belt 13 can be obtained. FIG. 1 shows the printing belt 13 in an unfolded state with the adhesive ends separated, and FIG. 7 shows six views of the printing belt 13 connected in the form of an endless belt.

As shown in FIGS. 3 and 4, the base block 15 consists of a projection with a trapezoidal cross section formed on the surface of the base portion 14 . The character pattern 16 has a printing surface 16a composed of mirror characters, and an inclined peripheral surface 16b connecting the printing surface 16a and the tip end surface 15a of the base block 15. As shown in FIG. In this embodiment, the bulging height H1 of the base block 15 is 0.9 mm, and the bulging height H2 of the character pattern 16 is 1 mm.

In the printing belt 13 configured as described above, in order to prevent the bulging starting end of the character pattern 16 from being torn and to increase the structural strength of each printing portion of the printing belt 13, the base block 15 is provided. Tear-resistant ribs (ribs) 35 connected to the peripheral surface 16b of the character pattern 16 are formed in a bulging shape at a plurality of locations on the tip end surface 15a. More specifically, as shown in FIG. 1, the tear-resistant ribs 35 are formed by five straight ribs parallel to the upper and lower sides of the base block 15, and the upper and lower ends and the upper and lower middle portions of the character pattern 16 of the month number 30 are formed. The tear resistant ribs 35 are connected to the character pattern 16 at three locations. As shown in FIG. 5, even in the case of year numerals 29 and date numerals 31, the tear-resistant ribs 35 are connected to the character pattern 16 at three points, upper and lower ends and upper and lower middle portions of the character pattern 16 . The tear-resistant rib 35 has a trapezoidal cross section, and the inclination angle of the hypotenuse is 45 degrees. As described above, one end of the tear-resistant rib 35 is connected to the peripheral surface 16b of the character pattern 16, and the other end reaches the end in the width direction of the print belt 13 (the direction in which the upper and lower sides of the base block 15 extend). .

The value (h/H2) obtained by dividing the dimension h of the protrusion of the rib 35 from the end surface 15a of the base block 15 by the dimension H2 of protrusion of the character pattern 16 from the end surface 15a of the base block 15 is 0.0. It is preferable to set to 2 or more and 0.5 or less. This is because if (h/H2) is less than 0.2, the strength improvement associated with the addition of the tear-resistant ribs 35 is not sufficient, and the character pattern 16 may be torn. ) exceeds 0.5, when the character pattern 16 is pressed against the paper surface with a large force at the time of stamping, the tear-resistant ribs 35 come into contact with the paper surface and cause rib-like stains. It should be noted that such printing defects tend to occur in rotary stamps that do not have a fixed printing body 3 and that are composed of a plurality of printing belts 13 .

Incidentally, in a rotary stamp provided with the fixed print body 3, if the tear-resistant ribs 35 come into contact with the paper surface and cause rib-like stains, the character pattern 16 at the stamping position will not be on the stamp surface of the fixed print body 3. Since it means that the print belt 13 has protruded excessively from the top, the user can be notified that the height of the print belt 13 needs to be adjusted.

As described above, the printing belt 13 is formed using the belt blank 28 shown in FIG. 5 as a front member. This belt blank 28 is formed using the mold shown in FIG. 6(a). Specifically, a plate-like or powdery raw rubber material is filled into the cavity 39 of the fixed mold 38 in a predetermined amount, the movable mold 40 is pressed against the fixed mold 38 to pressurize the raw rubber material, and the raw rubber material is heated in that state. After vulcanizing for a predetermined period of time, the belt blank 28 is released from the mold. Further, the belt blank 28 is immersed in running water to extract salts and dried to complete the plate-like belt blank 28 .

In the fixed mold 38 shown in FIG. 6A, each base block 15 and the printing pattern 16 are formed on the inner bottom of the cavity 39 in order to mold the printing belt 13 having the tear-resistant ribs 35 formed on the tip surface 15a. A rib groove 42 for forming a tear-resistant rib 35 is formed between the opening surfaces of adjacent cavity recesses 41 . As described above, the movable mold 40 is pressed against the fixed mold 38 to pressurize the raw rubber material. In this state, the raw rubber material is heated and vulcanized for a predetermined time. Fill the inside to form a character matching the character pattern 16 .

In the process of forming the character pattern 16 , the cavity recesses 41 for forming the character pattern 16 are connected to each other by rib grooves 42 for forming the anti-tear ribs 35 . Therefore, when there is a pressure difference between the adjacent cavity recesses 41, the fluidized raw rubber material moves from the cavity recesses 41 with high pressure toward the cavity recesses 41 with low pressure. As a result, the internal pressure of the cavity recesses 41 forming at least one horizontal row of characters of the belt blank 28 can be made uniform. Therefore, it is possible to produce the belt blank 28 with a very high rate of non-defective products, and to reduce the manufacturing cost of the rotary stamp by the amount corresponding to the high rate of non-defective products.

As shown in FIG. 1, the tear-resistant ribs 35 in the present embodiment are formed of straight ribs parallel to the width direction of the printing belt 13, and are formed at three locations, both ends and a middle portion of the character pattern 16 in the character height direction. connected at According to the printing belt 13, the ends of the character pattern 16 that are likely to tear (the upper and lower ends of the number 1, the lower end of the number 7, the left and right lower ends of the alphabet A, etc.) are reinforced with tear-resistant ribs 35. In addition, at least two locations in the character height direction of the character pattern 16 are reinforced with tear-resistant ribs 35 to further reliably increase the structural strength of the boundary portion (protruding start portion) between the base block 15 and the character pattern 16.例文帳に追加can be done.

FIG. 8 shows another embodiment in which the arrangement pattern of tear-resistant ribs 35 is changed. In FIG. 8( a ), the tear-resistant ribs 35 are formed of straight ribs obliquely inclined with respect to the character pattern 16 , and five tear-resistant ribs 35 intersect the character pattern 16 . 8B, the tear-resistant ribs 35 are formed of lattice ribs that obliquely intersect the character pattern 16, and the four tear-resistant ribs 35 that are inclined upward to the right in the figure and the ribs that are inclined upward to the left Each of the four tear-resistant ribs 35 intersected with the character pattern 16 . In this way, the shape and arrangement pattern of the ribs constituting the tear-resistant ribs 35 can be changed in various ways, and may be formed of wave ribs, circular ribs, zigzag ribs, and the like. A circular rib is a group of circular ribs arranged on top of each other like the Olympic symbol.

Four tear-resistant ribs 35 can be provided for one character pattern 16 . More specifically, the tear-resistant ribs 35 are formed of straight ribs parallel to the width direction of the printing belt 13, and the circumferential surface 16b of the character pattern 16 and the circumferential surface 16b of the character pattern 16 are formed at two locations, ie, both ends and a middle portion in the character height direction of the character pattern 16. can be connected. In such a printing belt 13 as well, an improvement in structural strength substantially equivalent to that of the printing belt 13 described in the previous embodiment is recognized.

In the above-described embodiment, the date stamp provided with the fixed print body 3 was exemplified as the rotary stamp, but the rotary stamp may be a rotary stamp that prints a number string or a character string other than the date. Five tear-resistant ribs 35 can be provided for one character pattern, and six or more may be provided. The base block 15 is preferably formed in a trapezoidal cross section, but may be formed in a rectangular trapezoidal shape. The cross-sectional shape of the tear-resistant rib 35 may be rectangular, semi-circular, semi-elliptical, or the like. Further, when the belt blank 28 is molded, a thin reinforcing wire rod may be embedded inside the tear-resistant rib 35 to enhance the reinforcing effect. In this case, a metal wire, a glass fiber wire, a plastic wire, or the like can be applied as the reinforcing wire. can be embedded in

11 adjustment dial 13 printing belt 14 base portion 15 base block 15a tip surface 16 character pattern 16a printing surface 16b peripheral surface 35 rib (tear-resistant rib)

Claims (3)

In a rotary stamp comprising a print belt (13) rotated by an adjustment dial (11),
The printing belt (13) comprises a base portion (14), a group of base blocks (15) protruding on the surface of the base portion (14) at regular intervals, and tip surfaces (15a) of the base blocks (15). ), and a rib (35) formed in a bulging shape on the protruding end surface (15a) of the base block (15) except for the part where the character pattern (16) is formed. ) and
The character pattern (16) is formed in a terrace shape having a printing surface (16a) made of mirror characters and a peripheral surface (16b) connecting the printing surface (16a) and the tip surface (15a) of the base block (15). and
The dimension (h) of protrusion of the rib (35) from the end face (15a) of the base block (15) is the dimension (H2 ) is set smaller than
A rotary stamp characterized in that the longitudinal ends of ribs (35) are connected to the peripheral surface (16b) of the character pattern (16). The ribs (35) are formed of straight ribs parallel to the width direction of the printing belt (13),
The ends of the ribs (35) in the length direction are connected to the peripheral surface (16b) of the character pattern (16) at both ends and midway in the character height direction of the character pattern (16). 2. The rotary indicia of claim 1, wherein the rotary indicia is . The protrusion dimension (h) of the rib (35) from the tip end surface (15a) of the base block (15) is defined as the protrusion dimension (H2) of the character pattern (16) from the tip end face (15a) of the base block (15). ), wherein a value (h/H2) obtained by dividing by ) is set to 0.2 or more and 0.5 or less.

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