JP2546542Y2 - Rotary drilling machine with phase difference removal shell - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary punching machine, and more particularly to a rotary punching machine such as a stamp and a stamp having fine punches and dies provided in the circumferential direction of a cylinder.

[0002]

2. Description of the Related Art Conventionally, this type of apparatus is disclosed in
As seen in Japanese Patent Application Laid-Open No. 3-27186, a semi-cylindrical punch support shell having a large number of pin punches is detachably screwed on the surface of the punch cylinder, and the same as the pin punch on the hole cylinder surface. It consists of a hole cylinder in which a semi-cylindrical hole shell in which die holes are drilled at a pitch is detachably attached with a number of screws. These punch cylinders and hole cylinders are meshed in the same phase. Gears are driven in a 1: 1 mesh. However, when the pin punch group is discontinuous, depending on the phase, all of the pin punch groups for perforation do not fit with the die hole, and during this time, slight backlash of the gears, slight torsional vibration of each rotating shaft, etc. Therefore, a slight phase difference occurs between the pin punch and the die hole, and it becomes impossible to fit the next pin punch group and the die hole group. These damages are severe, the life is remarkably shortened, and the pin punch Therefore, the operation efficiency is lowered and the drilling cost is increased. Alternatively, since there is no engagement with the sheet to be perforated in the inner part of the pin punch, the phase of this sheet and the pair of cylinders are shifted, and there is a possibility that the position of subsequent punching may be shifted.

[0003]

In this invention, a group of pin punches and a group of die holes are provided discontinuously on a punch support shell on a punch cylinder peripheral surface and on a hole shell of a die cylinder, respectively, and are provided on these cylinder shafts. Due to the backlash of a pair of gears and the slight displacement of the punch cylinder shaft and die cylinder shaft, the mesh between the pin punch and the die hole does not shift in the circumferential direction. It is an object of the present invention to provide a device that does not cause the problem.

[0004]

In order to achieve the above object, the present invention provides a punch cylinder in which a punch support shell having a large number of semi-cylindrical pin punches is detachably mounted on the surface of a punch cylinder, and the other hole is provided. In a rotary type punching device comprising a pair of pin punch cylinders and a hole cylinder in which a semi-cylindrical hole shell in which a number of die holes corresponding to the pin punches are drilled on the surface of the cylinder is detachably provided, the punch support is provided. At the position near the both ends of the cylinder of the shell and at least where the pin punch in the circumferential direction is interrupted, the pitch is an integral multiple of the same pitch as that of the pin punch in the circumferential direction, and the integer value is 1 to 3
, And the hole shell is provided with a guide hole having a position, a size and a pitch corresponding to the guide pin. In order to achieve the above object, the diameter of the guide pin and the guide hole of the rotary type punching device having the phase difference removing shell of the present invention may be the same as that of the pin punch for punching and the die hole. is there. In order to achieve the above object, the rotary pin punch having the phase difference removing shell of the present invention is characterized in that the position of the guide pin and the guide hole is located outside the passage width of the sheet to be punched. In some cases. In order to achieve the above object, the guide pin and the guide hole of the rotary punch having the phase difference removing shell according to the present invention are provided circumferentially all around the circumference. Is preferred.

[0005]

According to the present invention, when a sheet to be perforated is supplied, the pin punch and the die hole are sequentially fitted to each other at a certain portion, so that the next one is formed. The guide pin and the guide hole are fitted and guided at an integral multiple (integer N = 1 to 3) of the pitch between the guide pin and the die hole in a portion where the pin punch and the die hole are interrupted. Even when the pin punch group and the first die hole group are fitted, they are sequentially fitted without causing a pitch shift between the pin punch and the die hole. In the invention according to claim 2, since the outer guide pin and the pin punch, and the guide hole and the die hole having the above-mentioned functions are formed to have the same diameter, their fitting and withdrawing behaviors are the same, and the same behavior over the entire circumference. Is continuous. According to the third aspect of the present invention, when a perforated sheet is supplied, both side edges are perforated in a row of small holes by guide pins and guide holes. Therefore, even in the portion where the pin punch is interrupted, the perforated sheet continues to be transported properly. In the case of the invention described in claim 4, the guide pins and the guide holes are fitted and pulled out only on the outer sides on both sides of the perforated sheet, and there is no perforating action. Claim 5
In the described device, the guide pin and the guide hole are sequentially fitted and withdrawn over the entire circumference of the punch cylinder and the die cylinder.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A representative embodiment of the present invention will now be described. In the figure, reference numeral 10 denotes a die cylinder, two semi-cylindrical die hole shells 11 are provided on the outer peripheral surface thereof, and are detachably provided with a large number of screws, and a large number of die hole groups 12 are formed. In the example shown, four to six die hole groups 12 are provided discontinuously in the circumferential direction of the die cylinder 10, and the shape of one die hole group 12 is lined up in the shape of a Chinese character. . Taking a stamp as an example, it is a group of die holes necessary for one commemorative stamp. The other 20
Denotes a punch cylinder, and a semi-cylindrical punch support shell 2 having a large number of pin punch groups 22 implanted on its outer peripheral surface.
2 are detachably equipped with a large number of screws, the arrangement shape of the pin punch group 22 is the same as the arrangement shape of the die hole group 12, and each pin punch is sized to just fit into each die hole. The pin punch and the die hole are sequentially fitted to each other, and 4 to 5 holes are always formed in the circumferential direction so as to maintain the fitted state. 30 is a die hole group 12
And a guide hole formed in a portion where the pin punch group 22 is interrupted in the circumferential direction, and the pitch and the hole diameter thereof are exactly the same as those of the die hole group 12. Reference numeral 31 denotes a guide pin, which has the same pinch and diameter as the pin punch group 12 (see FIG. 3), and has the same mounting structure. The guide holes 30 and the guide pins 31 are included in the embodiment of the present invention even if they are provided on the entire circumference of the hole cylinder 10 and the punch cylinder 20 as shown in FIG. 1 (see FIG. 1). The guide holes 30 and the guide pins 31 are also provided in two rows on each of the left and right sides, but may be one row or three rows,
Although these pitches are also included in this embodiment even if they are integral multiples of 3 or less of the pitch of the pinch and the pin punch of the die hole, it is preferable that the pitch of the pin punch and the guide punch and the pitch of the die hole and the guide hole are equal. In addition, the die hole and the pin guide are both formed as a group, but they may be continuous in the entire circumferential direction. The operation of the embodiment is such that the pitch and diameter of the guide hole 30 and the guide pin 31 are the same as those of the die hole and the pin punch, so that their behavior is the same. Rotate fast. Others have been described in the section of the invention described in the claims, so that the description is omitted.

[0007]

According to the first aspect of the present invention, when a die cylinder shaft having a hole shell and a punch cylinder shaft having a punch support shell in which a pin punch is implanted are driven by meshing with a pair of gears, Even if there is a slight backlash of this gear or torsional vibration of rotation, the die shell and the punch support shell at least engage with either the die hole and the pin punch or the guide hole and the guide pin during the rotation. Because the hole cylinder and the punch cylinder are not out of phase with each other, the die hole and the pin punch are always fitted accurately, prolonging their life and causing these damages due to poor fitting during the service life. There is no. Even at the part where the die hole and the pin punch are interrupted, no phase difference occurs between the die hole and the punch due to the guide holes and the guide pins on both sides. The perforated sheet can be conveyed, and the phase difference between the perforated sheet and the two cylinders of the rotary perforator does not occur halfway. In the invention according to claim 2, since the outer guide pin and the guide hole having the above-mentioned effect are provided at exactly the same diameter and the same pitch as the die hole and the pin punch, their fitting and withdrawing behaviors are equal over the entire circumference, and two cylinders are provided. No irregular pulsation occurs. Claim 3
In the description, since the positions of the guide pins and the guide holes are within the passage width of the perforated sheet, the guide pins and the guide holes have an effect of accurately transporting the perforated sheet. In the invention according to claim 4, a narrow sheet can be used as the perforated sheet. In the invention according to claim 5, when the pin punch group and the die hole group are continuous over the entire circumference, a sheet having a narrow perforated sheet width can be used. The other effects are the same as those of the first aspect. Also, since the guide holes and guide pins are provided over the entire circumference, the phase shift between the two cylinders is always accurate,
The width of the perforated sheet can be used regardless of whether it reaches the guide hole and the guide pin. As an effect peculiar to the embodiment, the effect having the configuration of the corresponding claim is also provided.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a relationship between two cylinder portions of a punching device.

FIG. 2 is a partially longitudinal side view showing a fitted state of a die hole and a pin punch.

FIG. 3 is a plan development view of the hole shell.

[Explanation of symbols]

 Reference Signs List 10 die cylinder 11 die hole shell 12 die hole group 20 punch cylinder 21 punch support shell 22 pin punch group 30 guide hole 31 guide pin

Claims (4)

(57) [Scope of request for utility model registration] 1. A punch support shell in which a number of semi-cylindrical pin punches are implanted is detachably provided on the surface of a punch cylinder, while a number of die holes corresponding to the pin punches are drilled on the surface of a hole cylinder. In a rotary-type punching device comprising a pair of punch cylinders and a hole cylinder in which a semi-cylindrical hole shell is detachably provided, the punch support shell is located near both ends of the cylinder, and at least a pin punch is provided in a circumferential direction. A guide pin having an integral multiple of the same pitch as that of the circumferential pin punch and having an integer value of 1 to 3 is implanted at the break position, while the hole shell has a guide pin and a guide pin. A rotor provided with a phase difference removing shell, wherein guide holes of corresponding positions, sizes and pitches are drilled. Lee type perforator. 2. The rotary punch according to claim 1, wherein the diameters of the guide pin and the guide hole are the same as those of the pin punch for punching and the die hole. 3. The rotary punch according to claim 1, wherein the guide pin and the guide hole are located outside the passage width of the perforated sheet. 4. The rotary punch according to claim 1, wherein the guide pin and the guide hole are provided in the entire circumferential direction in the entire circumferential direction.