JPH0230871B2 - JIDOOINKI - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to an automatic stamping machine, and is particularly suitable for automatic stamping of receipt stamps, transfer stamps, etc. in banks, etc., as well as numbering stamps and other automatic stamping processes. This invention relates to an automatic stamping machine in which the stamping pressure is always adjusted and set to be constant regardless of the thickness of the paper to be stamped.

[Technical background of the invention and its problems] A conventional automatic stamping machine of this type 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 paper to be stamped is running through cooperation between the stamping drum and the platen roller (for example,
Publication No. 41567, Publication No. 56-37917, Publication No. 57-20916
Publication No. 58-49199). All of these are suitable for stamping when the paper to be stamped is a single leaf or a relatively thin paper even if it is a compound leaf. 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. The structure became complicated, and its control and adjustment became 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, it is possible to automatically adjust the stamping pressure to maintain a constant stamping pressure even when the paper is pressed, and there is no need to move the paper to be stamped. It is an object of the present invention to provide an automatic stamping machine that enables stamping processing by manual operation.

[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, and the load above a certain level is applied depending on the thickness of the paper to be stamped. When this happens, the imprint force is released and the printing plate returns 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 is again on standby in preparation for the next operation. By doing so, it was possible to obtain a constant stamping pressure regardless of the thickness of the paper to be stamped. Specifically, it supports a machine frame in which a motor for rotating a drive shaft is built into the rear part, and a printing plate mechanism having a printing plate, and is arranged at the front of the machine frame parallel to the rear wall of the machine frame. The plate support frame is connected to the plate support frame, the rear end is pivotally connected to the rear of the machine frame with the rear part of the machine frame being a fixed link, the front end is pivotally connected to the plate support frame, and the frame is biased toward an upward elastic traction tendency. The printing plate vertical movement mechanism is configured in the form of a parallel crank mechanism using vertical and horizontal swinging links, and the transmission pin moves up and down as the drive shaft rotates. This consists in that a vertical movement linkage mechanism is provided in which a gripping part that separates when a load is applied and re-engages during the backward movement is formed on a linkage board that is fixed to the swing link.

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

The present invention is broadly divided into a machine frame 1 in which a motor 10 serving as a drive source is built-in, a printing plate support frame 20 supporting a printing plate mechanism 25 for stamping predetermined contents, and a printing plate support frame 20 that can be moved up and down. A printing plate vertical movement mechanism 30 in the form of a parallel link mechanism is formed to move the printing plate vertical movement mechanism 30 up and down by motor 10 drive, and when a load above a certain level is applied, transmission with the motor 10 drive is performed. Vertical movement interlocking mechanism 4 that causes the motor 10 to continue driving even though the linkage is released to stop and return the forward and downward movement of the printing plate support frame 20.
It consists of 0.

The main body of the machine frame 1 has an insertion slot 4 cut out in the front part into which a stamped paper P to be stamped with predetermined stamps such as a receipt stamp, a transfer stamp, a numbering stamp, etc. is inserted. The side plate 3 is fixed with appropriate stays 5 and erected on the base 2, and the side plate 3 is covered with a decorative cover 7, and the front part of the decorative cover 7 is a front cover whose interior can be seen through. A stamp board 6, which can be opened and closed at 8, and 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 machine frame 1, and when the motor 10 drives the motor directly, its shaft, 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 printing plate vertical movement mechanism 30 at the top is swung by the drive shaft 12 rotated by the driving force of the motor 10 via the vertical movement linkage mechanism 40 disposed approximately in the center. Accordingly, 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 a stamp with predetermined contents, and supports the printing plate mechanism 25 in a state parallel to the rear wall of the machine frame 1.
It is located at the front. The printing plate mechanism 25 itself may be impregnated with a predetermined ink, for example.
It has a printing plate 26 to which ink is supplied by an ink pad that rotates as it moves up and down, and a commonly used one is usually incorporated and used. The printing plate support frame 20 shown in the figure is formed into a plane or approximately U-shape from the front by bending a mounting side plate 21 left and right so as to be pivotally supported on the front end of a swinging link 31, which will be described later. A printing plate vertical movement mechanism 30 is made up of a support piece 22 in which a removable groove 23 is cut out in order to support the plate.
As the machine frame 1 swings, it moves up and down parallel to the rear wall of the machine frame 1.

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 by forming a parallel crank mechanism with vertical and horizontal swinging links 31 that are biased toward traction. The illustrated swing link 31 has its rear end connected to the side plate 3 as shown in FIG.
At the rear, the front ends are respectively pivotally connected to the mounting side plates 21, and as shown in FIG.
When one of them is swayed, the whole is swayed,
The printing plate 26 of the printing plate mechanism 25 supported by the printing plate support frame 20 is lowered or raised toward the stamping plate 6 while maintaining the printing plate support frame 20 parallel to the rear wall of the machine frame 1. At this time, the swing link 31 is pulled by a coil spring 32 connected between one of them and the upper part of the side plate 3, and the swing link 31
When descending, it is done against the repulsive force of this spring 32, and when it is released, it returns to its original position due to the repulsive force.

The swinging operation of such a printing plate vertical movement mechanism 30 is as follows.
This 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 movement conversion mechanism 1
1 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 at the front of the motor 10, and is pivotally connected to a disk-shaped cam 13 fixed to the drive shaft 12. A transmission pin 15 is fixed to the tip of a link 14 having a substantially groove-shaped cross section, and this transmission pin 15 is fitted into a guide hole 18 to transfer the driving force rotated by the motor 10 to the transmission pin 15. By connecting the gripping portion 43 which is designed to move up and down in conjunction with the transmission pin 15 to the swinging link 31, the swinging of the swinging link 31, that is, the vertical movement of the printing plate vertical movement mechanism 30 is controlled. It is something that is done with movement. The guide plate 17 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.
The fixed stay plates 9 ensure mutual robustness of the side plates 3 and stability when the motor 10 and drive shaft 12 are driven in rotation. The guide hole 18 itself has an oval shape along the vertical direction, but the transmission pin 15 is connected to the guide plate 17 in order to transmit the vertical movement guided by the guide plate 17 to the linking board 41. It is necessary to ensure a reliable connection, so the transmission pin 1
5 is slidably connected to the guide hole 18 via a connecting body 16 having a groove that fits into the guide hole 18 of the guide plate 17, and a charging hole into which the connecting body 16 is inserted is provided above the guide hole 18. A portion 19 is formed.

Further, the printing plate support frame 2 is driven by the motor 10.
The vertical movement linkage mechanism 40 is configured to release the transmission linkage with the motor 10 drive when a load above a certain level is applied when the motor 0 is moved up and down. pin 15
In addition, a gripping portion 43, which separates when a load above a certain level is applied to the printing plate support frame 20 during the forward movement downward movement and engages again during the backward movement upward movement, is attached to the interlocking plate 41 fixed to the swing link 31. It was formed. That is,
When the stamp paper P is thin, the height of the stamp paper P set on the stamp board 6 is low, and the plate support frame 20 descends to the lowest position, and the plate support frame 20 On the other hand, when the paper P to be stamped is thick, the load applied to the printing plate support frame 20 is small.
The lowering does not reach the lowest position, and the load applied to the printing plate support frame 20 increases.Then, the connection between the transmission pin 15 and the gripping portion 43 is released, and only the transmission pin 15 is lowered. , the gripping part 43, the connecting plate 41, and the printing plate support frame 20 via the swing link 31 are not lowered but are returned upward to their original positions by the elastic force of the spring 32.

The structure of this will be explained in detail with reference to FIG.
A guide regulating plate 44 having a sliding groove 45 extending in the left-right direction is fixed to the sliding groove 45, and a pair of left and right grips which are in elastic contact with each other while being pulled by a traction spring 52 are fixed to the sliding groove 45. The holding piece 47 is inserted in a slidable manner, and a notch-shaped grip edge 48 for gripping the transmission pin 15 is formed between the elastic contact edges of the holding piece 47. And the left and right gripping pieces 47
A traction spring 52 is installed between the end of an adjustment screw 51 which is screwed to one connecting piece 50 bent at the outer part of the gripping piece 47 so as to be able to move forward and backward, and the other connecting piece 50. This is because the guide regulating plate 44, traction spring 52, and gripping piece 47 are arranged on the front surface of the connecting plate 41, and the transmission pin 15 is inserted through the connecting plate 41. In order to achieve relative movement between the transmission pin 15 and the linking board 41, the linking board 41 is provided with an elongated insertion hole 42 which is elongated in the vertical direction. So, to explain the operation next, the transmission pin 15
Along with the vertical movement of the transmission pin 15, the guide regulating plate 44 and the linking board 41 move up and down by the gripping piece 47, which causes the swinging link 31 to swing, thereby supporting the printing plate. Although the frame 20 also moves up and down (see Fig. 1), when a load is applied to the linking plate 41 during forward and downward movement, the transmission pin 15 resists the elastic force of the traction spring 52 from between the gripping pieces 47. escape, continue the descending operation (see Figure 5A), and move the connecting board 4.
1 returns to the original position without descending (see FIG. 5B), and then, when the transmission pin 15 moves back up, the gripping pieces 47 are forcibly spread apart and the grip edges 48 Then, the transmission pin 15 and the connecting plate 41 are engaged again to prepare for the next operation. At this time, an inclined engagement guide edge 49 is formed between the elastic contact edges of the gripping piece 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. pin 15
An expanding action when the gripping pieces 47 are fitted together,
Furthermore, it facilitates entry into the grip edge 48.

In the illustration, in order to ensure reliable connection between the transmission pin 15 and the gripping piece 47, the tip of the transmission pin 15 is lengthened, and the guide regulation plate 44 is provided with an avoidance notch 46 to avoid this. is cut out from below.

In addition, as shown in the figure, a traction spring 52 makes the gripping pieces 47 of the gripping portion 43 come into elastic contact with each other.
Specifically, by connecting the traction spring 52 to an adjustment screw 51 that is screwed into the connecting piece 50 so as to be able to move forward and backward, the traction force to the transmission pin 15 by the gripping piece 47 can be adjusted. gripping force or transfer pin 1 from between the gripping pieces 47
5 can be escaped by adjusting the forward and backward movement of the adjustment screw 51, and the time when the stamped paper P can be removed.
The stamping pressure against the load can be changed depending on the thickness of the sheet.

The present invention is constructed as described above, and normally, as shown in FIG.
In addition, a paper presser K, which is intended to temporarily press the stamped paper P, is placed at the rear edge of the stamping board 6 so that the compound stamped paper P can be turned over one by one, and A manual paper turner J incorporating an operating switch for instructing the automatic stamping machine of the present invention to operate each time it is operated is arranged approximately at the center of the rear edge of the stamping board 6.

In this way, the power switch 60 provided in the machine frame 1 is turned on and the energizing lamp 61 is also turned on to prepare the automatic stamping machine of the present invention for operation, and the paper P to be stamped is placed on the stamping board 6. After the sheet is placed on top and set in the insertion slot 4, the circuit of the motor 10 is closed by, for example, sliding a button on the paper turner J which also serves as an operating switch. Then, the drive shaft 1 rotated by this motor 10 drive
2 moves the transmission pin 15 up and down, and as the transmission pin 15 moves downward, the swing link 31 swings downward via the grip part 43 and the link board 41, and the printing plate support frame By lowering the printing plate 20, the printing plate 2 of the printing plate mechanism 25 supported by this
6. At this time, if necessary, it is added up every time one movement is completed, and the counter 6 is stamped.
2.

At this time, if the paper P to be stamped is thin, as shown in FIG. It descends all the way to the bottom. On the other hand, when the paper P to be affixed is thick, as shown in FIG. Since the downward movement of the transmission pin 15 is continued by the drive of the motor 10 even if the load exceeds a certain level, the grip portion 43 is unable to resist the load and releases the connection with the transmission pin 15.
That is, since the gripping piece 47 elastically holds the transmission pin 15 due to the elastic force of the traction spring 52, the transmission pin 15 and the linking board 41, which are integrated via the gripping part 43, can be connected to each other. The connection is released without being able to resist the load, and even if the downward movement of the transmission pin 15 is released from the grasping state by the grasping portion 43 and continues as it is, the swing 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. Next, the transmission pin 15 that has reached the lowest 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. , the transmission pin 15 and the link board 41 are integrated to 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.

[Effect of the invention] Therefore, the printing plate 26 of the printing plate mechanism 25 that moves up and down
When the load when the presses the top surface of the sheet P to be stamped exceeds a certain level, the driving force of the motor 10 does not act as a stamping force to the printing plate mechanism 25 and is released. Whether the paper P to be stamped is thick or thin, the stamp can be stamped with a predetermined printing pressure. Moreover, the deactivation of the stamping force depends on the stamping pressure on the stamped paper P, that is, the load that occurs when the printing plate mechanism 25 becomes difficult to descend due to the thickness of the stamped paper P. Since the load directly releases the connection between the transmission pin 15 and the gripping part 43, there is no need to prepare a special control means that detects the thickness of the stamped paper P and controls accordingly. The structure is simple, the operation is reliable, and there is little risk of failure. In particular, it is extremely suitable for inserting and setting a compound sheet of stamp paper P and stamping it while turning over each sheet, for example, 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, a strong stamping force is obtained, and the stamping on the paper P to be stamped is It becomes clear. Furthermore, the printing plate mechanism 25 itself is supported by a printing plate support frame 20 arranged at the front of the machine frame 1 and parallel to the rear wall of the machine frame 1.
0 constitutes a printing plate vertical movement mechanism 30 together with vertical and horizontal swinging links 31 at the rear of the machine frame 1;
The rear end of the machine frame 1 is a fixed link, and the front end is pivotally connected to the printing plate support frame 20, forming a parallel crank mechanism.
The vertical movement of 0 is correctly along the vertical direction of the machine frame 1, and the drive shaft 12 of the printing plate mechanism 25 faces the surface of the paper P to be stamped, and the stamping force is averaged over the entire stamping surface. This also ensures that the seal is clearly stamped.

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 A guide hole 18 along the vertical direction is opened in the plate 17, and the drive shaft 1
The transmission pin 15 that moves up and down by the rotation of the guide hole 1
The transmission pin 15 is provided with a vertical movement conversion mechanism 11 fitted into the transmission pin 15, and a sliding groove 4 extending in the left-right direction.
5 is fixed, and a pair of left and right gripping pieces 47 are in elastic contact with the sliding groove 45 while being pulled together by a traction spring 52.
A gripping portion 43 is fixed to the swing link 31, and a notched grip edge 48 for gripping the transmission pin 15 is formed between the resilient edges of the gripping piece 47. Since it is formed on the connecting board 41,
The stamping force is adjusted depending on the thickness of the paper P to be stamped. If it is thick, the stamping force is canceled halfway, and if it is thin, it is applied all the way to the bottom, and this is automatically adjusted. Therefore, the stamping force is always constant.

As explained above, according to the present invention, a receipt stamp,
The automatic stamping process for transfer stamps, numbering stamps, etc. can be performed so that the stamping pressure is always constant regardless of the thickness of the paper to be stamped, ensuring clear stamping, and especially for stitching. It is suitable for stamping each leaf when it is necessary to adjust the stamping pressure, such as when turning over a compound leaf. Since this is achieved by mechanically automatically releasing the drive transmission force, it has excellent effects such as a simple structure and reliable operation.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a vertical sectional view of the internal mechanism, FIG. 2 is a plan view,
Fig. 3 is a front view of the internal mechanism with the printing plate mechanism removed, Fig. 4 is an exploded perspective view of the main parts, and Figs. 5 A to C are operations of the vertical movement linkage mechanism when the paper to be stamped is thick. A schematic diagram for explanation, and FIG. 6 is a perspective view of the overall appearance. P...Paper to be stamped, K...Paper presser, 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 ... Vertical movement conversion mechanism, 12 ... Drive shaft, 13 ... Cam,
14... Link, 15... Transmission pin, 16... Connecting body, 17... Guide plate, 18... Guide hole, 19...
...Charging hole portion, 20...Print plate support frame, 21...Mounting side plate, 22...Support piece, 23...Attachment/removal groove, 25...
...Print plate mechanism, 26...Print plate, 30...Print plate vertical movement mechanism, 31...Swing link, 32...Spring, 40...Vertical movement interlocking mechanism, 41...Interlocking 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... Connection 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, which is arranged in parallel to the rear wall of the machine frame and arranged in the front part of the machine frame. The plate support frame is connected to the plate support frame, the rear end is pivotally connected to the rear of the machine frame with the rear part of the machine frame being a fixed link, the front end is pivotally connected to the plate support frame, and the frame is biased toward an upward elastic traction tendency. A printing plate vertical movement mechanism is formed in the form of a parallel crank mechanism using vertical and horizontal swinging links, a guide hole is opened along the vertical direction in the guide plate, and a transmission pin that moves up and down by the rotation of the drive shaft is inserted into the guide hole. A guide regulating plate is fixed to this transmission pin, and a sliding groove is formed along the horizontal direction. 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 each have a gripping portion formed with a notched grip edge for gripping the transmission pin. , an automatic stamping machine characterized by comprising a vertically movable interlocking mechanism formed on an interlocking board fixed to a swing link. 2. The vertical movement of the transmission pin is achieved by opening a vertical guide hole in a guide plate fixed to the machine frame at the front of the motor, and moving the transmission pin to a link pivotally connected to a cam fixed to the drive shaft. 2. The automatic stamping machine according to claim 1, which is obtained by a vertical motion converting mechanism formed by fixing the transmission pin and fitting the transmission pin into a guide hole. 3. The automatic stamping machine according to claim 1, wherein the traction spring of the gripping portion has an adjustable traction force.