JPS61123573A - Automatic stamper - Google Patents

Abstract

PURPOSE:To provide an automatic stamper capable of stamping constantly with a fixed stamping pressure irrespective of the thickness of a paper, comprising a mechanism for adjusting the position of a stamp when a load not lower than a predetermined value is exerted due to the thickness of a paper, when stamping on a paper by vertically moving a stamp through motor drive. CONSTITUTION:When the paper P is thin, an oscillating link 31 and a stamp support frame 20 are lowered to the lowermost position in the condition in which a transmission pin 15 and a gripping 43 are connected with each other. When the paper P is thick, the gripping part 43 yields to an excessive load to be disconnected from the pin 15 at the moment a stamp 26 reaches the upper surface of the paper P. Then, even when a transmission pin 35 is lowered, the link 31, the frame 20 and a stamp mechanism 25 are not lowered, but are returned upward to original positions by the elastic force of a spring 32. On returning from the bottom dead center to the upper original position, the pin 15 is again engaged to a gripping piece 47, and the next stamping operation is started.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to an automatic stamping machine, and in particular, a receipt stamp at a bank, etc.
The present invention relates to an automatic stamping machine that is most suitable for automatic stamping processing of transfer stamps, numbering stamps, and other stamps, and in which the stamping pressure is constantly adjusted and set regardless of the thickness of the paper to be stamped.

[Technical background of the invention and its problems] This type of conventional automatic stamping machine is provided with a rotary stamping drum connected to a motor and a platen roller that contacts the stamping drum and rotates in opposition to the stamping drum. Mainly proposed are methods in which the stamping is carried out while the stamped paper is running through cooperation between the stamping drum and the platen roller (for example, Japanese Patent Publication No. 53-41567, Japanese Patent Publication No. 56-37917).
No. 57-20916, No. 58-4919
Publication No. 9). All of these are suitable for stamping when the paper to be stamped is a single sheet or a relatively thin sheet even if it is a compound sheet. However, if the paper to be stamped is thick, it is difficult to feed and transport it to the stamp drum, and it is difficult to adjust the position of the stamp drum or platen roller depending on the thickness of the paper to be stamped. It gets complicated and its IIItl
The l11 adjustment was also troublesome.

[Object of the Invention] Therefore, the present invention was created in view of the above points, and the stamping process is performed by moving the printing plate up and down on the paper to be stamped, and at that time, the thickness of the paper to be stamped is In addition to being able to self-adjust the stamping pressure to a constant stamping pressure, there is no need to move the paper to be stamped, for example,
It is an object of the present invention to provide an automatic stamping machine which enables manual operation to stamp each leaf even if it is a bound compound leaf while turning over each leaf.

[Summary of the Invention] Therefore, in the present invention, the printing plate is moved up and down by a motor to apply a stamp to the paper to be stamped. The printing plate is configured to release the imprinting force and return the printing plate to its original position, while the motor drive, which continues during this time, returns to its original position after the positioning operation is completed and waits again in preparation for the next operation. By doing this, it was possible to obtain a constant stamping pressure regardless of the thickness of the paper to be stamped. Specifically, it includes a machine frame with a built-in motor in the rear that rotates the drive shaft;
A printing plate support frame is arranged parallel to the rear wall of the machine frame and arranged at the front of the machine frame to support the printing plate mechanism having the printing plate, and the intrusion end is pivoted to the rear of the machine frame with the rear part of the machine frame as a fixed link. a printing plate vertical movement mechanism formed in the form of a parallel crank mechanism with vertical and horizontal swinging links connected to each other, the front end of which is pivotally connected to the printing plate support frame, and which is biased in an upward elastic traction tendency; The transmission pin moves up and down as the drive shaft rotates, and a swinging link is used to connect the gripping part that disengages when a load above a certain level is applied to the plate support frame during the downward movement and re-engages during the upward movement. The invention consists in that it is equipped with a vertical movement linkage mechanism formed on a linkage board fixed to the top and bottom.

[Embodiment of the Invention] An embodiment of the present invention will be described below with reference to the drawings.

The present invention can be roughly divided into a machine frame 1 in which a motor 10 serving as a drive source is built in, a printing plate support frame 2d supporting a printing plate mechanism 25 for imprinting a predetermined content, and a printing plate support frame 2d that moves the printing plate support frame 20 up and down. Upper and lower printing plate 1 with a parallel link mechanism formed to
! II mechanism 30, this printing plate vertical movement mechanism 30 is connected to motor 1.
0 drive, and when a load greater than - is applied, the transmission connection with the motor 10 drive is released to stop the forward and downward movement of the printing plate support frame 20 and return, but the motor 10 drive remains unchanged. It consists of a vertical movement interlocking mechanism 40 that allows the movement to continue.

Therefore, the main body of the machine frame 1 has an insertion slot 4 cut out in the front portion, into which a sheet P to be stamped with predetermined stamps such as receipt stamps, transfer stamps, numbering stamps, etc. is inserted. The left and right side plates 3 are fixed with appropriate stays 5 and erected on the base 2, and the side plates 3 are covered with a decorative cover 7, the front part of which allows the inside to be seen through. cover 8
A stamping board 6, on which a stamped paper P is set, is fixed to the lower part of the insertion slot 4.

A motor 10 is built-in and fixed in the rear part of the inside of the machine frame 1, and when the motor 10 is directly driven, the shaft thereof, or the drive shaft 12 that is rotated at a reduced speed by a speed reduction mechanism, is rotated along the longitudinal direction of the machine frame 1. The driving wheel 12 rotated by the driving force of the motor 10 swings the printing plate vertical movement mechanism 30 at the top via the vertical movement linkage mechanism 40 arranged approximately in the center, and The printing plate support frame 20 connected to the front end of the printing plate vertical movement mechanism 30 is moved up and down at the front of the machine frame 1, thereby raising and lowering the printing plate mechanism 25 so as to face the insertion slot 4. (See Figure 1).

The printing plate support frame 20 supports a printing plate mechanism 25 having a printing plate 26 engraved to correspond to the imprinting of predetermined contents, and is mounted on the front part of the machine frame 1 in a state parallel to the rear wall of the machine frame 1. It is arranged in

The printing plate mechanism 25 itself has a printing plate 26 which is impregnated with a predetermined ink, for example, or which is supplied with ink by an ink pad that rotates as it moves up and down. The ones that are included are usually included and used. The illustrated printing plate support frame 20 is formed by bending the mounting side plate 21 left and right to be pivoted to the front end of a swing link 31, which will be described later, to form a flat or front road mouth shape.
In order to detachably support the printing plate i-structure 25, a support piece 22 with a detachable groove 23 cut out is provided in series on the upper part, and as the printing plate vertical movement mechanism 30 swings, the rear wall of the machine frame 1 It is designed to move upward in parallel with the .

The printing plate vertical movement mechanism 30 for this purpose has the rear end of the machine frame 1 as a fixed link, the rear end of which is pivotally connected to the machine frame 1, and the front end of the printing plate vertical movement mechanism 30 that is pivotally connected to the printing plate support frame 20. It is formed with a parallel crank rock configuration and a mouth formed by vertical and horizontal swinging links 31 that are biased toward traction. The illustrated swing link 31 has its rear end pivotally connected to the rear part of the side plate 3, and its front end pivotally connected to the mounting side plate 21, as shown in FIG. A total of four pieces are arranged vertically and parallel to each other in the left and right sides of the frame 1, and when any one of them is swung, the whole is swung, and the printing plate support frame 20 is rotated by degrees.
The printing plate 26 of the printing plate mechanism 25 supported by the printing plate mechanism 20 is lowered or raised toward the stamping plate 6 while maintaining a state parallel to the rear wall of the machine frame 1. At this time, the swing link 31 is pulled by a coiled spring 32 connected between one of them and the upper part of the side plate 3, and when the swing link 31 descends, the elastic force of this spring 32 When this is released, it returns to its original position due to repulsive force.

Such swinging motion of the printing plate vertical movement mechanism 30 is obtained by a vertical movement conversion mechanism 11 that converts the rotational driving force of the motor 10 into vertical movement. That is, as shown in FIG. 4, this vertical motion conversion mechanism 11 has a guide hole 18 along the vertical direction opened in a guide plate 17 appropriately fixed to a part of the machine frame 1 in front of the motor 10, and a guide hole 18 along the vertical direction. A link 1 having a substantially groove-shaped cross section is pivotally connected to a disc-shaped cam 13 fixed to a cam 12.
A transmission pin 15 is fixed to the tip of the motor 10 and the transmission pin 15 is fitted into a guide hole 18.
Converts the driving force rotated by the transmission pin 15 into vertical movement of the transmission pin 15, and connects the gripping part 43, which is connected to the transmission pin 15 to move up and down, to the swing link 31. That is, the vertical movement of the printing plate vertical movement mechanism 30 is achieved.

The guide plate 17 has a generally hat-shaped cross section and is fixed to the front surface of a plate-shaped fixed stay plate 9 that is suspended horizontally between the substantially central portions of the side plates 3. The guide plate 17 also has a substantially hat-shaped cross section and is fixed to the front surface of the plate-shaped fixed stay plate 9, which is suspended horizontally between the substantially central portions of the side plates 3. This is intended to ensure stability during rotational driving of the motor 10 and WIA driving shaft 12.

The guide hole 18 itself has an elliptical shape along the vertical direction, but the transmission pin 15 has a secure connection with the guide plate 17 in order to transmit the vertical movement guided by the guide plate 17 to the linking board 41. Therefore, the transmission pin 15 is slidably connected to the guide hole 18 via a connecting body 16 having a groove that fits into the edge of the support piece 22, and A charging hole portion 19 into which the connecting body 16 is inserted is formed in the housing.

Further, when the printing plate support frame 20 is moved up and down by the drive of the motor 10, the vertical movement linkage mechanism 40 is configured to release the transmission connection with the drive of the motor 10 when a certain load is applied. The transmission pin 15, which moves up and down as the drive shaft 12 rotates, has a gripping portion 43 that disengages when a load above a certain level is applied to the printing plate support frame 20 during the downward movement and engages again during the upward movement. , is formed on a linking board 41 fixed to the swing link 31. In other words, when the paper P to be stamped is thin, the height of the paper P to be stamped set on the stamping board 6 is low, and the plate support frame 20 is lowered to the lowest position in response to this. The load applied to the support frame 20 is small, and conversely, when the paper P to be stamped is thick, the plate support frame 20 does not descend to the lowest position, and the plate support frame 20
As a result, the connection between the transmission pin 15 and the gripping part 43 is released, and only the transmission pin 15 is lowered, but the gripping part 43, the link board 41, and the swinging link 31 are lowered. The printing plate support frame 20 is not lowered through the plate support frame 20 but is returned upward to its original position by the elastic force of the spring 32.

The structure of this will be explained in detail with reference to Fig. 4.
A guide regulating plate 44 on which sliding grooves 45 are formed along the left-right direction is fixed to a linking board 41 fixed to the swing link 31, and the sliding grooves 45 are provided with traction springs 52 to pull each other. The pair of left and right gripping pieces 47 that are in elastic contact with each other are inserted in a freely movable manner, and the gripping pieces 4
A notched grip edge 48 for gripping the transmission pin 15 is formed between the elastic contact edges 7. The left and right gripping pieces 47 are connected to one end of an adjustment screw 51 screwed into one connecting piece 50 bent at the outer side of the gripping piece 47 so as to be able to move forward and backward, and the other connecting piece 50. A traction spring 52 is mounted between them for elastic traction, and a guide regulation plate 44 and a traction spring 5 are mounted on the front surface of the link 141.
2. Arrange the gripping piece 47 and connect the transmission pin 15 5114
1, the transmission pin 15 and the connecting board 41
In order to achieve relative movement with the connecting member 141, an elongated through-hole 42 is formed in the link 141 and is elongated in the vertical direction. Therefore, to explain the operation next, as the transmission pin 15 moves up and down, the guide regulating plate 44 and the linking board 41 move up and down by the gripping piece 47 that grips the transmission pin 15, causing the rocking. Although the movable link 31 swings and the printing plate support frame 20 also moves up and down (see Fig. 1), when a load is applied to the linkage 511141 during forward and downward movement, the transmission pin 15 moves from between the gripping pieces 47. The connecting board 4 escapes against the repulsive force of the traction spring 52 and continues its downward movement (see Figure 5 (A)).
1 returns to the original position without descending (see Fig. 5 (B)), and then, when the transmission pin 15 moves back up, the gripping pieces 47 are forcibly spread apart and their grips Rim 48
(see FIG. 5(C)), the transmission pin 15 and the connecting plate 41 engage again, and are ready for the next operation.

At this time, an inclined engagement guide edge 49 is formed between the elastic contact edges of the gripping pieces 47 so that the width gradually becomes narrower from the lower edge to the grip edge 48, thereby making it possible to transmit the information. This facilitates the expansion action when the pin 15 is fitted between the gripping pieces 47 and furthermore, the guiding of the pin 15 into the grip edge 48.

In the figure, in order to securely connect the transmission pin 15 and the gripping piece 47 to each other, the tip of the transmission pin 15 is lengthened, and the guide regulation plate 44 is provided with an avoidance notch to avoid this. 46 is cut out from below.

Further, as shown in the figure, a gripping piece 47 in the gripping portion 43
Specifically, by connecting the traction spring 52 to an adjustment screw 51 that is screwed into the connecting piece 50 so that it can move forward and backward, the traction force of the traction spring 52 that brings the traction springs into elastic contact with each other can be adjusted. Transmission pin 1 by holding piece 47
5, or the time at which the transmission pin 15 can be released from between the gripping pieces 47 can be made possible by adjusting the forward and backward movement of the adjustment screw 51, and the stamping pressure against the load depending on the thickness of the stamped H1P. can be changed.

The present invention is constructed as described above, and normally, as shown in FIG. 6, a stamp board 6 is formed which has a sufficient size to allow the placement and setting of the stamp-receiving paper P. Also,
A paper presser K, which temporarily presses and presses the paper P to be affixed, is placed at the rear edge of the stamping board 6 so that the paper P to be affixed, which is a compound leaf, is turned over one sheet at a time, and the automatic stamping machine of the present invention is used for each operation. A manual paper turner J having a built-in activation switch for instructing the operation thereof is disposed approximately at the center of the rear edge of the stamp board 6.

In this way, the power switch 60 provided in the machine frame 1 is turned on, the energizing lamp 61 is also turned on, and the automatic stamping machine of the present invention is ready for operation. After placing the sheet on the top and setting it in the insertion slot 4, the circuit of the motor 10 is closed by, for example, sliding a button on a paper turner J that also serves as an operation switch. Then, the drive shaft 12 rotated by this motor 10 drive
is what moves the transmission pin 15 up and down, and the transmission pin 1
5 is moved downward, the gripping part 43 and the connecting board 4
By swinging the swinging link 31 downward via 1 and lowering the printing plate support frame 20, a stamp is applied by the printing plate 26 of the printing plate mechanism 25 supported by the plate support frame 20. , if necessary, it is integrated every time one movement is completed and displayed on the counter 62.

At this time, if the paper P to be stamped is thin, the transmission pin 15 and the grip part 43 remain firmly connected, and the swing link 31 and the printing plate support frame 20 are moved to the lowest position, as shown in FIG. It is lowered until it reaches . On the other hand, when the paper P to be stamped is thick, as shown in FIG.
If this load is above a certain level, the downward movement of the transmission pin 15 is continued by the drive of the motor 10 even if it is above the - chamber, so the gripping portion 43 cannot resist the load and transmit the transmission. The connection with pin 15 is released.

That is, since the gripping piece 47 elastically holds the transmission pin 15 by the elastic force of the traction spring 52, the transmission pin 1
The M\A board 4 board 1 connection, which is integrated with the board 5 through the gripping part 43, is released without being able to resist the load, and the downward movement of the transmission pin 15 is caused by the gripping part Even if the swinging link 31, the printing plate support frame 20, and the printing plate mechanism 25 are released from the grasping state by the spring 43 and continue as they are, the swinging link 31, the printing plate support frame 20, and the printing plate mechanism 25 are not lowered, but are returned to their original positions above by the elastic force of the spring 32. He will return. Next, the transmission pin 15 reaches the bottom dead center.
moves upward, and when it returns to its original position, it is forcibly fitted between the gripping pieces 47, and the transmission pin 15 and the gripping pieces 47 are engaged again, and the transmission pin 15 and the linking board 41 are integrated. and prepare for the next operation. Thereafter, by operating the paper turner J while turning over the stamped paper P one by one, a predetermined stamp is applied to each paper.

[Effects of the Invention] According to the IC, when the printing plate 26 of the printing plate mechanism 25 that moves up and down presses the top surface of the stamp paper P, and the load exceeds a certain level, the driving force of the motor 10 is reduced by the printing plate mechanism. 25 and is released without acting as a stamping force. Therefore, whether the stamped paper P inserted and set is thick or thin, it can be stamped with a predetermined stamping pressure. Moreover, the deactivation of the stamping force depends on the stamping pressure on the paper P to be stamped, that is, the load generated when the printing plate mechanism 25 becomes difficult to descend due to the thickness of the paper P to be stamped. Since the load directly releases the connection between the transmission pin 15 and the gripping portion 43, a special control means is provided to detect the thickness of the stamped paper P and to move the paper P in response to this. It is unnecessary, has a simple configuration, operates reliably, and has little risk of failure. especially,
This is extremely suitable for inserting and setting a compound paper P to be stamped and stamping while turning over the leaf, for example, for numbering printing work.

Further, since the vertical movement of the printing plate mechanism 25 is driven by the motor 10 that rotates the drive shaft 12, which is converted into vertical movement in the drive transmission process, it is obtained as a strong stamping force, and the stamping force on the paper P to be stamped is obtained. becomes clear. Furthermore, the printing plate mechanism 25 itself is supported by a printing plate support frame 20 that is parallel to the rear wall of the machine frame 1 and arranged at the front of the machine frame 1. , the vertical and horizontal swinging links 31 constitute a printing plate vertical movement mechanism 30. , the front ends are each pivotally connected to the printing plate support frame 20 to form a parallel crank Akebonohashi shape, so that the vertical movement of the printing plate support frame 20 correctly follows the vertical direction of the machine frame 1. The drive shaft 12 of the printing plate mechanism 25 faces the surface of the sheet P being stamped, and since the stamping force is averaged over the entire stamping surface, clear stamping is ensured.

In particular, when converting the rotation of the drive shaft 12 into vertical movement of the transmission pin 15 and thereby operating the printing plate vertical movement mechanism 30, the vertical movement linkage mechanism 40 incorporated in the drive transmission process The transmission pin 15, which moves up and down with the rotation of Interlocking board 41 fixed to link 31
Since the stamping force is adjusted according to the thickness of the paper P to be stamped, if it is thick, the stamping force is canceled halfway, and if it is thin, the stamping force is adjusted all the way to the bottom, and this is automatically adjusted. By doing so, a constant stamping force is maintained at all times.

As explained above, according to the present invention, automatic stamping of receipt stamps, transfer stamps, and even numbering stamps can be performed with constant stamping pressure regardless of the thickness of the paper to be stamped. In addition to ensuring clear stamping, it is particularly suitable for stamping each leaf color when it is necessary to adjust the stamping pressure, such as when turning over bound compound leaves. In addition, since the stamping pressure can be adjusted by mechanically automatically releasing the drive transmission force depending on the load at the time of stamping, it has excellent effects such as simple construction and reliable operation.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a longitudinal sectional view of the internal mechanism, FIG. 2 is a plan view, and FIG. 3 is a front view of the internal mechanism with the printing plate mechanism removed. Figure 4 is an exploded perspective view of the main parts, Figures 5 (A) to (C) are schematic diagrams illustrating the operation of the vertical movement linkage mechanism when the paper to be stamped is thick, and Figure 6 is a perspective view of the overall appearance. It is. P...Paper to be stamped, K...Paper holder, J...Paper turner, 1...Machine frame, 2...Base, 3...Side plate, 4...
Insertion slot, 5... Stay, 6... Stamp plate, 7... Decorative cover, 8... Front cover, 9... Fixed stay plate, 10... Motor, 11... Upper and lower Dynamic conversion embroidery structure, 12
... Drive shaft, 13 ... Cam, 14 ... Link, 1
5... Transmission pin, 16... Connecting body, 17... Guide plate, 18... Guide hole, 19... Charging hole portion, 20... Plate support frame, 21... Mounting side plate, 22...
・Support piece, 23... Attachment/removal groove, 25... Printing plate mechanism, 2
6...Print plate, 30...Print plate vertical movement mechanism, 31...Swing link, 3
2... Spring, 40... Vertical movement linkage mechanism, 41... Linkage board, 42...
... Penetration elongated hole, 43... Gripping portion, 44... Guide regulation plate, 45... Sliding groove, 46... Avoidance notch, 47...
・Gripping piece, 48... Grip edge, 49... Engagement guide edge, 50... Connecting piece, 51... Adjustment screw, 52...
・Traction spring, 60...Power switch, 61...
- Energizing lamp, 62...counter.

Claims (1)

[Scope of Claims] 1. A machine frame in which a motor for rotating a drive shaft is built in the rear part, and a printing plate mechanism having a printing plate, supported and arranged parallel to the rear wall of the machine frame at the front part of the machine frame. The plate supporting frame is fixedly connected to the rear of the machine frame, the rear end is pivotally connected to the rear of the machine frame, the front end is pivotally connected to the plate support frame, and the frame is biased in an upward elastic traction tendency. The printing plate vertical movement mechanism is formed into a parallel crank mechanism using vertical and horizontal swinging links, and the transmission pin moves up and down as the drive shaft rotates. An automatic stamping machine characterized by comprising a vertical movement linkage mechanism in which a gripping part that separates when a load is applied and re-engages when rising in a double motion is formed on a linkage board fixed to a swing link. . 2. The vertical movement of the transmission pin is transmitted by opening a vertical guide hole in a guide plate fixed to the machine frame at the front of the motor, and to a link pivotally connected to a cam fixed to the drive shaft. 2. The automatic stamping machine according to claim 1, wherein the automatic stamping machine is obtained by a vertical movement converting mechanism formed by fixing a pin and fitting the transmission pin into a guide hole. 3. The gripping part is made by fixing a guide regulating plate in which a sliding groove running in the left-right direction is formed to an interlocking board fixed to a swinging link, and pulling each other with a traction spring in the sliding groove. A patent claim in which a pair of left and right gripping pieces that are in elastic contact with each other are slidably inserted, and the elastic contact edges of the gripping pieces are formed with notched grip edges for gripping a transmission pin. range 1
The automatic stamping machine described in paragraph 2 or paragraph 2. 4. The automatic stamping machine according to claim 3, wherein the traction spring of the gripping portion has an adjustable traction force.