JPS644532Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Industrial application field] This invention is used to manually feed and rotate several printing belts individually through a dial to enter dates, amounts, and other various symbols and numbers. Concerning the rotation mark. More specifically, as shown in the figure, a support shaft 6 is installed on the upper part of the portal frame 5, and a bridge 7 is installed on the lower end, and a large number of dials 8 are rotatably mounted on the support shaft 6, and each dial 8 and bridge 7 are installed on the support shaft 6. The object is a rotary mark in which a printing belt 9 is wound between the two dials 8 and 9, and each dial 8 is rotated by hand to individually feed and drive each corresponding printing belt 9.

[Conventional technology]

The basic structure of this type of rotary mark has been publicly known for some time. There, the printing belt 9 is driven to be fed by frictional engagement with the belt receiving portion 8b of each dial 8. Therefore, the printing belt 9, which has some elasticity, is wrapped around it in advance with a certain tension.
The resistance when sliding on the bridge surface is large,
If left as is, the dial 8 may slip and the printing belt 9 may not be able to be driven. This problem is exacerbated by the fact that the printing belt stretches and loosens during repeated use.

In order to solve these problems, the first prior art, for example, Japanese Utility Model Publication No. 15-9135, discloses that an engaging hole is provided on the circumferential surface of the belt receiving portion 8b of each dial 8, as shown in FIG. 24, and an engagement protrusion 23 that fits into the engagement hole 24 is integrally provided on the back surface of the printing belt 9 side so as to protrude across the width direction of the belt. However, each engaging protrusion 23 is positioned between the printing bases 11 and 11 on the printing belt 9, and the bridge 7 at the lower end has a rectangular cross section and rotates. Then, after reducing the feeding resistance of the printing belt 9 by the rotation of the bridge 7, the engagement hole 24 and the engagement protrusion 23 are
The belt 9 is fed without slipping by the fitting engagement with the belt 9.

In addition, as a second conventional technology, for example,
There is a publication No. 2515, in which a synthetic resin slippery sheet 25 is integrally attached to the outer periphery of the bridge 7 at the rotation mark as shown in Fig. 7, and the bridge surface is smoothed by this slippery sheet 25. This is intended to improve the sliding effect of the printing belt 9.

[Problem that the invention attempts to solve]

The present inventor considers the following issues regarding these conventional techniques.

First, in the first prior art (FIG. 6), a printing base 1 has an engaging protrusion 23 adjacent to the back surface on the printing belt 9 side.
1 and 11. In other words, the engagement protrusion 2
3 is not provided on the back side of each thick printing stand 11. This means that the flat back surface of each printing stand 11 is supported by the flat surface of the bridge 7 having a square cross section, and each printing stand 11
This is to enable the outer stamp surface of the paper to be pressed correctly onto the paper surface. In this form, if the engaging protrusion 23 is located on the back surface of the printing stand 11, the printing stand 11 will tilt on the underside of the bridge 7, making printing impossible.

The problem with this is the printing stand 11 of the printing belt 9,
Since the engaging protrusion 23 is provided in the thin part between the parts 11 and 11, the protruding amount and wall thickness of the engaging protrusion 23 cannot be made sufficiently. It is easy to imagine what would be missing.

When employing this type of belt slip prevention mechanism, it is insufficient to ensure the engagement force between the printing belt 9 and the dial 8. It is necessary to reduce the frictional resistance of the belt 9 against the bridge 7. Otherwise, as a result of forcibly pulling the printing belt 9, stretching and deformation or cutting of the belt 9 will be actively promoted.
This point has been anticipated in the first prior art, and as a means for achieving this, the bridge 7 is made rotary. However, making the bridge 7 rotary in this manner complicates the structure and makes it expensive, making it difficult to put it into practical use. In this sense, it is preferable that the bridge 7 is fixed, but in this case, in the first prior art, the engaging protrusion 23 hits the lower surface of the bridge 7 and cannot be smoothly fed. This will likely cause the mating protrusion 23 to break.

Next, looking at the second prior art (FIG. 7), it only discloses that the bridge 7 is provided with slipperiness, but does not mention anything about the relationship with the belt slip prevention mechanism.

Certainly, if we focus only on the belt slip prevention mechanism,
The engagement protrusion 23 is on the dial 8 side, the engagement hole 24 is on the dial 8 side,
It seems easy to replace them on the printing belt 9 side based on the first prior art. However, there is no known technology, including the above-mentioned conventional example, as to where on the printing belt 9 the engagement hole 24 should be provided while ensuring good feeding performance and stamping performance of the printing belt 9. unacceptable.

[Technical issues]

Therefore, in the present invention, firstly, the structure is simple and can be provided at low cost, secondly, each printing belt 9 can be easily fed with the dial 8, and thirdly, the printing belt 9 can be fed reliably without slipping. This was proposed as a technical challenge: to be able to operate it, and fourth, to ensure clear stamping.

[Means for solving problems]

In order to achieve the above-mentioned technical problem, in the present invention, as shown in FIGS. a bridge 7 having a U-shaped cross section; a cylindrical belt receiving part 8b connected to the center of a circular plate part 8a; and a plurality of dials 8 rotatably mounted in parallel on the support shaft 6; A rotary stamp consisting of a thick printing stand 11 erected on the outer surface at regular intervals, and an endless printing belt 9 wound around between the belt receiving part 8b of each dial 8 and the bridge 7. By turning each dial 8, the corresponding printing belt 9 can be manually fed,
Each printing stand 1 of each printing belt 9 is placed on the underside of the bridge 7.
1 is assumed to be guided in a sequential manner.

Although this basic configuration is conventionally known, the present invention is based on the belt receiving portion 8b of each dial 8.
Engagement protrusions 23 are provided protrudingly at regular intervals on the outer periphery of the
An engagement hole 24 is recessed in the center position of the back surface of each printing stand 11 of each printing belt 9, and an engagement protrusion 2 is provided in the engagement hole 24.
3. Adopts a new belt slip prevention mechanism that fits and engages. Here, providing the engagement hole 24 at the center position on the back surface of each printing stand 11 means that a peripheral side wall 24a is left around the outer periphery of the engagement hole 24 on the back surface of the printing stand 11. Furthermore, the present invention is characterized in that a slippery sheet 25 is attached to at least the portion of the outer surface of the bridge 7 in which the printing belt 9 comes into sliding contact.

[Effect of invention]

Thus, in the present invention, the engagement protrusion 23 on the dial 8 side is fitted into the engagement hole 24 on the printing belt 9 side, so that no slipping occurs between the contact surfaces of the dial 8 and the printing belt 9, and each The corresponding printing belt 9 can be operated by hand using the diamond 8. Each printing belt 9 covers the outer periphery of the bridge 7 at the lower end of the U-shaped cross section with a slippery sheet 2.
5 allows for smooth sliding movement.

[Effect of idea]

According to the present invention as described above, the following unique effects are achieved.

(1) Providing the engagement protrusion 23 on the outer periphery of the belt receiving portion 8b of each dial 8 and the engagement hole 24 on each thick printing stand 11 of each printing belt 9,
When molding the dial 8 and the printing belt 9, they can be formed integrally. The bridge 7 is fixed between the lower ends of the portal frame 5 in the conventional manner, and the slippery sheet 25 is simply pasted on its outer surface. Therefore, only the slippery sheet 25 is added, and the assembly workability is the same as before, so the overall structure is simple and can be implemented at low cost.

(2) When the printing belt 9 goes around the U-shaped bridge 7 at the lower end, it suddenly bends and deforms, and the sliding resistance is greatest at that part. is pasted. Furthermore, since the back surface of the printing belt 9 has only the engagement hole 24 and no protrusions of any kind, the printing belt 9 can be fed very smoothly.

(3) Regarding the engagement holes 24 provided on the side of each printing belt 9, the engagement holes 24 are recessed in the back surface of each thick printing base 11. Therefore, since the depth and width of the engagement hole 24 can be increased, the engagement protrusion 23 on the dial 8 side and the engagement hole 2 can be made larger.
4 can be engaged with each other easily but reliably, and the presence of the slippery sheet 25 provides smoothness, and together with dust, each printing belt 9 can be smoothly and reliably prevented from slipping. Can be operated for feeding.

(4) When each printing table 11 is guided to the lower surface of the bridge through the lower end corner of the bridge 7 by the feeding of the printing belt 9, conventionally, the adjacent printing table 1
The thin part of the belt between 1 and 11 was exclusively elastically stretched, and there were problems such as the thin part of the belt being cut during repeated use, or the base of the printing base 11 cracking and becoming missing. In the present invention, the bending stress applied to the printing belt 9 can be released even through the large engagement hole 24, so even if used for a long period of time, the printing belt 9 will not stretch or deform, it will break, or the printing base 11 will become missing. You can often prevent this from happening.

(5) The engagement hole 24 is not formed in the shape of a groove on the back surface of each printing stand 11 across the belt width direction, but is particularly recessed in the center position of the back side of each printing stand 11. In other words, as shown in FIG.
1 has a peripheral side wall 24 around the outer periphery of the engagement hole 24.
This is the shape where a exists. Therefore, although each printing stand 11 is provided with an engaging hole 24,
The outer printing surface 9a is well-shaped due to the presence of the peripheral side wall 24a. In particular, as shown in FIG. 2, when each printing stand 11 is guided to the lower surface of the bridge 7, the circumferential wall 24a is received by the lower surface of the bridge 7, so that deformation of the printing surface 9a during stamping is prevented. prevention and ensure clear imprinting.

〔Example〕

FIGS. 1 to 5 illustrate examples of rotary stamps to which the present invention is applied, particularly date stamps in which the date of receipt is entered.

In FIG. 1, numeral 1 indicates a rectangular cylindrical main frame. This is a pair of front and rear half-split cases 1a and 1b that are tied together, with a square frame 2 at the top end and a sliding frame 3 at the bottom end.
are fitted onto each other to maintain the tied state.
A printing mechanism 4 is built into the main frame 1.

In FIGS. 2 and 3, the printing mechanism 4 is
A support shaft 6 is mounted on the upper part of the portal frame 5, and a bridge 7 having a U-shaped cross section is mounted on the lower end between the left and right sides, and a large number of dials 8 are rotatably mounted on the support shaft 6 in a parallel state on the left and right sides. . Each dial 8 has a circular plate portion 8a
It is a plastic molded product with a cylindrical belt receiving part 8b connected to the center of the belt. An endless printing belt 9 is wound between the belt receiving portion 8b of each dial 8 and the bridge 7. The circular plate portion 8a of each dial 8 faces the outside through a slit 10 provided on the front and rear sides of the main frame 1.
Each printing belt 9 can be individually driven by holding in hand.

In FIG. 2, each printing belt 9 is made of an elastic rubber material, and thick printing pads 11 are protruded from its outer surface at regular intervals, and numbers and symbols are engraved on the printing pads 11. .

In FIG. 3, a threaded rod 1 is attached to the top surface of the portal frame 5.
2 is firmly erected and screwed into the adjustment nut 13.
is fitted into the through hole on the upper surface of the main body frame 1 so as to be rotatable but non-removable, and by rotating the adjustment nut 13, the entire printing mechanism 4, that is, the printing belt 9 is attached to the main frame 1. The vertical height of the bottom edge can be adjusted. A handle 15 to be mounted on the main frame 1 is screwed onto the threaded rod 12.

The sliding frame 3 has guide side plates 3a and 3b erected on the left and right sides, and these guide side plates 3a and 3b are fitted onto the left and right side surfaces of the lower end of the main frame 1. Elongated holes 16, 16 are provided at the lower part of the joint of the main frame 1, and pin fixing holes 17, 17 are provided in the guide side plates 3a, 3b of the sliding frame 3, respectively. are supported outside the pin holes 17, 17 in a manner that prevents them from coming off, and the sliding frame 3 is inserted into the lower part of the main frame 1 so as to be vertically movable so that the support pins 19 can move within the elongated holes 16, 16. To support.

In FIG. 2, a pedestal 20 is fixed to the lower surface of the sliding frame 3, a printed body 21 is affixed to the lower surface of the pedestal 20, and a square shaped A window 22 is provided concentrically through the window. The lower end of the printing belt 9 moves inward and outward through the window 22.

The basic form of the proposed date stamp is as described above, and the lower end stamp surface is composed of a fixed printing surface 21a engraved on the lower surface of the fixed printing body 21 and a variable printing surface 9a formed by each printing belt 9. On the fixed printing surface 21a, for example, a seal such as "reception stamp" or "XX Co., Ltd. Patent Department" is stamped, and on the variable printing surface 9a, the date "year, month, day" is stamped in numbers. When changing the date on the variable printing surface 9a during this stamping, push down the sliding frame 3 from the main frame 1, rotate the corresponding dial 8 by hand from outside the main frame, and advance each printing belt 9 individually. , a predetermined printing stand 11 is positioned on the flat lower surface of the bridge 7. And pattern 15
If you hold the date stamp in your hand and press the lower end of the date stamp against the paper surface, the sliding frame 3 will rise relatively to the hand frame side, and the variable printing surface 9a at the lower end of the printing belt 9 will enter the window 22 to print the fixed print. It is flush with surface 21a, and both printing surfaces 9
Predetermined information is stamped at a and 21a.

In FIGS. 3 and 4, engagement protrusions 23 are integrally provided on the outer circumferential surface of the belt receiving portion 8b of each dial 8 at a central position in the width direction and at regular intervals in the circumferential direction. On the other hand, in each printing stand 11 of each printing belt 9, an engagement hole 24 into which the engagement protrusion 23 is loosely fitted is provided at the center of the back surface, leaving a peripheral side wall 24a. In other words, the engagement hole 24 is connected to each thick printing base 1.
1 has a rectangular recess in the center of the back surface in the figure, and has a cross-sectional shape with a circumferential side wall 24a around the outer periphery, and the engagement hole 24 is not formed in a groove shape across the width direction of the belt. . As shown in FIG. 5, a slippery sheet 25 made of tetrafluoroethylene resin is adhered to the outer surface of the bridge 7 made of metal or plastic.

In this case, when each dial 8 is rotated, the engagement protrusion 23 engages with the engagement hole 24, and each printing belt 9 is forcibly fed and driven without slipping.
Moreover, each printing belt 9 comes into contact with the slippery sheet 25 on the bridge surface and smoothly slides on the bridge surface without receiving large sliding resistance. Therefore, each dial 8 can be used to smoothly and reliably feed each printing belt 9.

Note that the shapes of the engagement protrusion 23 and the engagement hole 24 are not limited to square shapes; for example, the engagement hole 2
4 may be square as shown in the illustrated example, and the engagement protrusion 23 may be triangular in longitudinal side view.

It goes without saying that the present invention can be applied to a numeric mark as shown in FIG. 8 and various other rotary marks, and in such cases there may be no member corresponding to the main body frame 1 of the illustrated example.

[Brief explanation of the drawing]

Fig. 1 is an external perspective view showing a date stamp which is an example of a rotary stamp according to the present invention, Fig. 2 is a side view of the central vertical section, Fig. 3 is a front view of the date stamp, and Fig. 4 is the configuration of the present invention. FIG. 5 is an enlarged longitudinal sectional front view showing the engaged state of the dial and the printing belt, which are members, and FIG. 5 is an enlarged longitudinal sectional side view of the bridge, which is one of the constituent members of the present invention. FIG. 6 is a longitudinal sectional side view for explaining the first prior art, and FIG. 7 is a perspective view of only the bridge for explaining the second prior art. FIG. 8 is a longitudinal sectional side view showing another embodiment of the present invention. 5... Portal frame, 6... Support shaft, 7... Bridge,
8...dial, 8a...circular plate part of dial,
8b...Dial belt receiver, 9...Printing belt, 11...Printing stand, 23...Engaging protrusion, 24
...Engagement hole, 24a... Circumferential wall, 25... Slippery sheet.

Claims (1)

[Scope of utility model registration request] A support shaft 6 installed on the upper part of the portal frame 5 and a bridge 7 having a U-shaped cross section installed on the lower end of the portal frame 5
A cylindrical belt receiving part 8b is connected to the center of the circular plate part 8a, a plurality of dials 8 are rotatably mounted in parallel on the spindle 6, and thick printing is provided on the outer surface. In a rotary mark consisting of an endless printing belt 9 wound around between the belt receiving portion 8b of each dial 8 and the bridge 7, stands 11 are erected at regular intervals, and the belt of each dial 8 is Engagement protrusions 23 are protruded at regular intervals on the outer periphery of the receiving portion 8b, and an engagement hole 24 into which the engagement protrusions 23 fit is provided at the center position of the back surface of each printing stand 11 of each printing belt 9. A rotary stamp characterized in that a side wall 24a is left in a concave manner, and a slippery sheet 25 is attached to at least a portion of the outer surface of the bridge 7 in which the printing belt 9 comes into sliding contact.