JP4129364B2 - Punching device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a punching device, and more particularly to a punching device that punches a large number of stacked paper sheets with a hollow blade and presses the paper sheet group with a pusher against a hollow blade supported in a fixed state. Is.
[0002]
[Prior art]
As this seed punching device, one having a structure as shown in FIG. 6 is known.
An annular frame (11) is attached and fixed coaxially with the front open end of the punching chamber case (1) formed in a substantially cylindrical shape. In the vicinity of the upper end of the punching chamber case (1), there is an arm insertion window for inserting an upper support arm (13) (13) for supporting a hollow blade (18), which will be described later, from the inside to the outside ( 12) (12) is formed, and the lower half near the tip of the punching chamber case (1) is cut away, thereby forming a side opening (16) that opens downward. Yes.
[0003]
On the surface of the annular frame (11) on the punching chamber (15) side, there are upper and lower portions extending inward and outward of the punching chamber (15) through the arm insertion windows (12) and (12) and the side openings (16). Support arms (13) (13) (14) (14) are attached and fixed.
[0004]
The upper and lower support arms (13) and (13) are cylindrical arm holders (131) and (141) that are fixed to the annular frame (11) with fixing screws (not shown), and slides that are slidably inserted therethrough. The sliding arm (132) (142) can be adjusted in the protruding length toward the hollow blade (18) by rotating the adjustment handle (17) (17). It is configured.
[0005]
A punching machine (20) at the tip of the pusher (21) is opposed to the annular hollow blade (18) supported at the tip of the upper and lower support arms (13), (13), (14), and (14). Yes.
[0006]
In addition, a scrap discharge port for discharging a punch of the paper sheet punched by the hollow blade (18) is provided at the lower front portion of the base (23) on which the punching chamber case (1) is placed ( 24) is open, and the scrap discharge port (24) is located at the downstream end of a scrap chute (not shown) that opens below the hollow blade (18).
[0007]
In this case, when the pusher (21) is driven in a state in which the paper sheets in the stacked state are sandwiched between the hollow blade (18) and the punching machine (20), the paper sheet group becomes the outline shape of the hollow blade (18). Is punched out to the outside from the annular frame (11) portion, while the punched residue generated outside the hollow blade (18) is cut by a scrap cutter (not shown) and dropped downward, and the dropped scrap is dropped into the hollow blade The scrap chute opened below (18) is slid down and collected from the scrap outlet (24) to the collection box (10).
[0008]
[Problems to be solved by the invention]
However, in the above-described conventional one, the outer ends of the pair of lower support arms (14) and (14) that support the hollow blade (18) from the lower side are formed on the lower side of the front end of the punching chamber case (1). The adjustment handles (17) and (17) provided at the outer ends of the support arms (14) and (14) are externally operable by projecting downward from the side openings (16) and (16). Accordingly, in this case, since the punching chamber (15) communicates with the outside through the side opening (16), the punching residue is removed from the side opening (16) by the arrow (B) in FIG. There was a problem of falling and scattering to the side of the base (23) along the path indicated by.
This invention is made | formed in view of this point, and makes it the subject to prevent the inconvenience which a punching waste falls and scatters to the side of a punching apparatus.
[0009]
[Means for Solving the Problems]
[1]
The technical means of the present invention for solving the above problems are as follows:
` ` Punching chamber (15) partitioned by outer peripheral wall ,
Along the periphery of the product outlet additionally provided by an annular frame of the punching抜室(15) and (11),
A pusher that presses the sheet group in a stacked state to the hollow blade (18) supported at a position facing the product take-out port from the inside of the punching chamber (15) and punches it into the contour shape of the hollow blade;
A scrap chute that slides down to a scrap discharge port (24) connected to the outside of the punching device, which is dropped to a scrap receiving port formed in a lower region of the hollow blade (18),
A pair of left and right upper support arms (13) that support the hollow blade (18) from above and extend from the support portion to the outer length adjusting portion through the outer peripheral wall of the punching chamber (15). 13) is attached to the annular frame (11),
A pair of left and right lower support arms (14) that support the hollow blade (18) from below and extend from the support portion through the central hole (110) of the annular frame (11) to the outer length adjustment portion. (14) is attached to the lower part of the front surface of the annular frame (11) ”.
[0010]
The technical means operates as follows.
The paper sheets in the stacked state are pressed by the pusher (21) against the hollow blade (18) and punched in the same manner as described above.
[0011]
Then, when the punching is performed, the punched debris generated on the outer periphery of the hollow blade (18) falls below and moves down to the scrap discharge port (24) while sliding down the scrap chute, and is disposed at the scrap discharge port (24). It is collected in the collection box etc.
[0012]
In this case, in the above technical means, the pair of left and right lower support arms (14) (14) for supporting the hollow blade (18) from below passes through the central hole (110) of the annular frame (11). It is attached to the lower part of the front surface of the annular frame (11) in such a manner that it extends to the outside length adjustment . Accordingly, it is not necessary to form a side opening (16) for inserting the lower support arms (14), (14) into the lower portion of the tip of the punching chamber case (1) as in the conventional case described above. That is, according to the present invention, it is not necessary to form the conventional side opening (16) as described above, which causes the scraps to scatter in the working space on the side of the punching device.
[0013]
[2]
In the above item 1,
`` The lower support arm (14)
An arm holder attached to the front surface of the annular frame (11) in a contact state and formed with a groove that opens to the contact side;
From the slide shaft portion (145) that slides along the concave groove by the operation of the adjustment handle (17) disposed on the end portion on the length adjustment portion side, and one end of the slide shaft portion (145) A sliding arm (142) formed of a bent extension (146) that is bent and has a tip that serves as a support for the hollow blade (18),
If the sliding shaft portion (145) is in direct contact with the annular frame (11), the following action is achieved.
[0014]
That is, when the sliding shaft (145) of the sliding arm (142) does not directly contact the front surface of the annular frame (11), for example, the sliding of the sliding shaft (145) and the annular frame (11) Compared with the case where a seat plate is interposed between the boundary portions, in the present invention, the sliding arm (142) is the same as the sliding shaft portion (145) is in direct contact with the annular frame (11). The distance between the sliding shaft portion (145) portion (the portion directly contacting the annular frame (11)) and the hollow blade (18) support portion at the distal end of the bending extension portion (146) is shortened. Therefore, even if the pressing force of the pusher acts on the sliding arm (142) that supports the hollow blade (18), the sliding arm (142) bends with its end as a fulcrum as compared with the case where the distance is long. Worry less. Therefore, the hollow blade (18) can be stably supported as much as the sliding arm (142) is not easily bent.
[0015]
[3]
In the above item 1 or 2,
`` A fastening slit that opens to the tip is provided at the tip of the annular frame (11) center side in the holder for the arm,
Further, the arm holder is provided with a pair of clamping flanges opposed to each other with the clamping slit interposed therebetween and a clamping bolt for clamping the pair of clamping flanges in a direction approaching each other. When tightening with a tightening bolt, the width of the tightening slit located between the tightening flanges is reduced. Thereby, the outer periphery of the sliding shaft part (145) of the sliding arm (142) is pressed by the arm holder. Therefore, even if the sliding part of the grooved material holder and the sliding shaft part (145) is worn with long-term use, the arm holder and the sliding shaft part (145) are fixed by tightening the fastening flange with a bolt. It is possible to fit closely, and to prevent rattling of the fitting portion.
[0016]
[Section 4]
In the above items 1 to 3,
"The annular frame (11) is formed with a guide groove that opens to the front side and extends in the circumferential direction,
In the guide groove, a slider loaded in a reciprocating manner along the guide groove is housed.
In the case where the arm holder and the slider are fastened and fixed by a fixing bolt, when the arm holder is moved in the extending direction of the guide groove with the fixing bolt loosened, the slider positioned in the guide groove The fixing bolt screwed into the arm moves in the circumferential direction along the guide groove together with the arm holder. Thus, the position of the lower support arm (14) including the arm holder and the sliding arm (142) held by the arm holder can be adjusted.
[0017]
[5]
4. In the item 4, "the fixing bolt is screwed into the slider from a groove bottom constituting wall of the arm holder through a bolt insertion slit formed in the sliding shaft portion (145) in the axial direction. With the configuration of “entered”, the lower support arm (14) including the arm holder and the sliding arm (142) held by the arm holder can swing around the fixing bolt in an untightened state. Therefore, the posture of the lower support arm (14) can be adjusted according to the shape and size of the hollow blade (18).
[0018]
【The invention's effect】
Since the present invention has the above configuration, the present invention has the following specific effects.
Since there is no need to form the conventional side opening (16), which has been the cause of the splatter scattering in the working space on the side of the punching device, the swarf falls to the side of the punching device. Will not scatter.
[0019]
In the item of item 2, as described above, the hollow support blade 18 can be stably held because the lower support arm is difficult to bend even if it receives the pressing force of the pusher.
[0020]
In the case of item 3, as described above, even if the arm holder and the sliding portion of the sliding shaft portion (145) are worn with long-term use, both of them are tightened by tightening the tightening bolts. It can be made to fit and shakiness of this fitting part can be prevented over a long period of time.
[0021]
In the case of item 5, since the lower support arm (14) can be swung by the fixing bolt portion, the posture of the lower support arm (14) can be easily adjusted according to the shape and size of the hollow blade (18). It can be carried out. In particular, when the invention specific matter of item 5 is added to item 2, when the groove bottom constituting wall of the arm holder is tightened to the annular frame (11) side by the fixing bolt, the fixing bolt tightening force is It acts on the sliding shaft part (145) through the bottom constituting wall. As a result, the sliding shaft (145) is firmly and directly pressed and fixed to the annular frame (11) without rattling.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Next, the above-described embodiment of the present invention will be described in detail with reference to the drawings.
As shown in FIGS. 1 to 3, the punching apparatus according to the present embodiment includes a punching chamber case (1) formed in a tubular shape as a whole, and a tip of the punching chamber case (1). An annular frame (11) disposed on the punching chamber, a pusher (21) disposed on the rear portion of the punching chamber case (1), and a base on which the punching chamber case (1) is placed. And a stand (23). Details of each part will be described below.
[0023]
[Punching room case (1)]
The upper half of the punching chamber case (1) constituting the punching chamber (15) is formed in a semi-cylindrical shape, and a working window (31) is opened on the side wall thereof. In addition, an arm insertion window (12) (12) for inserting an upper support arm (13) (13) described later is formed at the upper end of the punching chamber case (1).
[0024]
[About the annular frame (11)]
The upper and lower support arms (13), (13), (14), and (14) are attached to the annular frame (11) attached to the front end opening of the punching chamber case (1) serving as a product outlet. These upper and lower support arms (13), (13), (14), and (14) are configured to be movable within a predetermined range in the circumferential direction. The upper and lower support arms (13), (13), (14), and (14) are configured to be adjustable in length.
[0025]
* Lower Support Arm (14) As shown in FIGS. 1, 4 and 5, each of a pair of left and right lower support arms (14) (14) disposed at the lower part of the front wall of the annular frame (11). Consists of an arm holder (143) and a sliding arm (142) slidably loaded thereto. This sliding arm (142) is formed by a punching chamber case (1) via a sliding shaft (145) that slides in the arm holder (143) and a central hole (110) of the annular frame (11). A bending extension (146) is provided to enter the inside. A stepped portion (144) for supporting the hollow blade (18) is formed at the tip of the bent extension portion (146).
The sliding shaft portion (145) is formed with a bolt insertion slit (26) penetrating through the front and back sides thereof and extending in the axial direction for inserting the fixing bolt (27).
[0026]
The fixing bolt (27) is screwed into a slider (33) that is opened in front of the annular frame (11) and is movably loaded in a guide groove (28) extending in the circumferential direction. Both sides of the slider (33) are engaged with a pair of engaging protrusions (280) and (280) that project opposite to the edge of the groove entrance of the guide groove (28). Is prevented from escaping from the guide groove (28). Further, the sliding shaft portion (145) of the sliding arm (142) is in direct contact with the front wall of the annular frame (11), and the concave groove (35) of the arm holder (143). As shown in FIG. 5, a slight gap (39) (39) (0.1 to 0.2 mm in this embodiment) is formed between the outer surface of the groove entrance side and the annular frame (11). ing.
[0027]
On the other hand, the arm holder (143) is formed with a concave groove (35) for slidably inserting the sliding shaft portion (145) of the lower support arm (14). 35) is open to the annular frame (11) side.
[0028]
As shown in FIG. 4, the arm holder (143) is formed with a tightening slit (37) that opens to the tip, and the outer surface of the arm holder (143) holds the tightening slit (37). Opposing tightening flanges 38 and 38 are projected. Accordingly, when the tightening flanges (38) and (38) are tightened with the tightening bolts (32), the width of the tightening slit (37) is reduced, whereby the arm holder (143) is used to slide the arm (142). The outer periphery of the sliding shaft portion (145) is pressed and fixed.
[0029]
An adjustment handle (17) is disposed at the outer end of the arm holder (143) constituting the lower support arm (14), and the adjustment handle (17) is rotated by loosening the tightening bolt (32). Thus, the protruding length of the sliding arm (142) from the arm holder (143) can be adjusted. Further, a through hole (148) through which the fixing bolt (27) is inserted is formed in the groove bottom constituting wall (149) of the arm holder (143).
[0030]
* Upper Support Arm (13) As shown in FIGS. 1 and 2, the pair of left and right upper support arms (13) disposed on the upper back surface of the annular frame (11) is provided with a punching chamber case (1). The arm holder (131) inserted in the arm insertion window (12) formed on the outer peripheral configuration wall of the arm holder (131), and a seat plate (130) for closing the groove entrance portion of the groove (45) of the arm holder (131) And a sliding arm (132) slidably inserted into the concave groove (45). An adjustment handle (17) is disposed at the outer end of the arm holder (131), and the sliding arm (131) from the arm holder (131) is rotated by rotating the adjustment handle (17). 132) can be adjusted.
The tip of the sliding arm (132) is bent in an L shape toward the hollow blade (18), and the bent tip is engaged with the end of the hollow blade (18). A portion (134) is formed.
[0031]
The upper support arm (13) is fixed to the annular frame (11) by a position fixing screw (47) inserted through an arcuate guide groove (29) that penetrates the annular frame (11). When the nut (49) screwed to the position fixing screw (47) is loosened, the upper support arm (13) moves in the circumferential direction along with the position fixing screw (47) moving along the arcuate guide groove (29). You can adjust the position by moving to.
[0032]
[About Pusher (21)]
As shown in FIG. 2, slide cylinders (22) and (22) are arranged on the outer periphery of the punching machine (20) that moves in a direction in contact with and away from the hollow blade (18). The cylinders (22) and (22) are slidably fitted on guide shafts (41) and (41) extending in the moving direction of the punching disc (20). Each guide shaft (41) is installed between an annular frame (11) and a rear wall (19) provided at the front and rear ends of the punching chamber case (1).
[0033]
The screw shaft (51) protruding backward from the punching disc (20) constituting the pusher (21) is screwed into the screw cylinder (52), and the screw cylinder (52) is attached to the rear wall (19). It is rotatably loaded in the attached holder (53). In addition, a toothed pulley (54) is fitted and fixed to the screw cylinder (52), and the toothed pulley (54) is provided on the rotating shaft of the drive motor (57) via a timing belt (55). The toothed pulley 56 is connected to the power transmission state. Therefore, when the rotating shaft of the drive motor (57) rotates, the rotational force is transmitted to the screw cylinder (52) via the toothed pulley (56), the timing belt (55) and the toothed pulley (54). As a result, the screw cylinder (52) rotates and the screw shaft (51) advances and retreats together with the punching disc (20). Therefore, in the present embodiment, the combination of the punching board (20), the screw shaft (51), and the screw cylinder (52) corresponds to the pusher (21) described above.
[0034]
In addition, a work tray (46) is disposed in a lower adjacent portion of the moving area of the punching machine (20), and a group of sheets to be punched is set on the work tray (46). It has become.
Further, in the vicinity of the outer periphery of the hollow blade (18), a scrap cutter (81) (81) is provided for cutting the punched residue generated outside the hollow blade (18), and the scrap cutter (81) The scraps cut in (81) fall into a scrap receiving port (61) of a scrap chute (62) described later.
[0035]
[About the base (23)]
As shown in FIGS. 2 and 3, the top plate (60) of the base (23) is provided with a scrap receiving port (61) facing the support portion of the hollow blade (18) from below. At the same time, the scrap receiving port (61) is connected to the scrap discharge port (24) through a scrap chute (62).
[0036]
Further, as shown in FIG. 3, the tops of both side walls (71) and (72) of the scrap chute (62) are suspended from the semi-cylindrical upper half (119) of the punching chamber case (1). Both side plates (111) and (112) are connected. This is different from the conventional product (see FIG. 6) in which the conventional side opening (16) described above, which causes the punched residue to be scattered outside, is formed at the lower outer periphery of the punching chamber case (1). The scraps are all moved from the scrap receiving port (61) through the scrap chute (62) to the scrap discharge port (24), and are collected in the collection box (10) disposed outside the scrap discharge port (24). Collected.
[0037]
[About the actual operation]
Next, the actual operation of the punching apparatus according to the above-described embodiment will be described.
First, a large number of stacked paper sheets (99) are placed on the work tray (46). When an operation switch (not shown) is turned on in this state, the rotation of the drive motor (57) is transmitted to the screw cylinder (52) via the toothed pulley (56), the timing belt (55), and the toothed pulley (54). The Then, with the rotation of the screw cylinder (52), the screw shaft (51) is fed forward, whereby the paper sheet group (99) is pressed against the hollow blade (18) by the punching disc (20), and the paper The leaf group (99) is punched into the contour shape of the hollow blade (18). The punched products (98) and (98) move on the bowl-shaped take-out table (97) disposed outside the hollow blade (18) and are taken out to a predetermined place.
[0038]
In addition, the scrap generated on the outer periphery of the hollow blade (18) is divided by the scrap cutter (81) (81), and this is moved along the path of the scrap receiving port (61) → scrap chute (62) → scrap discharge port (24). Then, it is recovered in the recovery box (10).
[Brief description of the drawings]
FIG. 1 is a perspective view of a punching device according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of the punching device of FIG. Fig. 4 is an enlarged cross-sectional view of an arrangement portion of the lower support arm (14). Fig. 5 is an enlarged vertical sectional view of an arrangement portion of the lower support arm (14). Explanation drawing [Explanation of symbols]
(11) ... Annular frame
(13) ... Upper support arm
(14) ... Lower support arm
(15) ... Punching room
(17) ・ ・ ・ Adjustment handle
(18) ・ ・ ・ Hollow blade
(24) ・ ・ ・ Scrap outlet
(142) ・ ・ ・ Sliding arm
(145) ・ ・ ・ Sliding shaft
(146) ・ ・ ・ Bending extension

Claims (5)

A punching chamber (15) partitioned by an outer peripheral wall ;
Along the periphery of the product outlet additionally provided by an annular frame of the punching抜室(15) and (11),
A pusher that presses the sheet group in a stacked state to the hollow blade (18) supported at a position facing the product take-out port from the inside of the punching chamber (15) and punches it into the contour shape of the hollow blade;
A scrap chute that slides down to a scrap discharge port (24) connected to the outside of the punching device, which is dropped to a scrap receiving port formed in a lower region of the hollow blade (18),
A pair of left and right upper support arms (13) that support the hollow blade (18) from above and extend from the support portion to the outer length adjusting portion through the outer peripheral wall of the punching chamber (15). 13) is attached to the annular frame (11),
A pair of left and right lower support arms (14) that support the hollow blade (18) from below and extend from the support portion through the central hole (110) of the annular frame (11) to the outer length adjustment portion. The punching device (14) is attached to the lower part of the front surface of the annular frame (11). In the punching device according to claim 1,
The lower support arm (14)
An arm holder attached to the front surface of the annular frame (11) in a contact state and formed with a groove that opens to the contact side;
From the slide shaft portion (145) that slides along the concave groove by the operation of the adjustment handle (17) disposed on the end portion on the length adjustment portion side, and one end of the slide shaft portion (145) A sliding arm (142) formed of a bent extension (146) that is bent and has a tip that serves as a support for the hollow blade (18),
The punching device, wherein the sliding shaft (145) is in direct contact with the annular frame (11). In the punching device according to claim 1 or 2,
A clamp slit that opens to the tip is provided at the tip of the annular frame (11) in the arm holder,
Further, the punching device, wherein the arm holder is provided with a pair of clamping flanges opposed to each other with the clamping slit interposed therebetween, and a clamping bolt for clamping the pair of clamping flanges in a direction approaching each other. The punching device according to any one of claims 1 to 3, wherein the annular frame (11) is formed with a guide groove that opens to the front side and extends in the circumferential direction.
In the guide groove, a slider loaded in a reciprocating manner along the guide groove is housed.
A punching device in which the arm holder and the slider are fastened and fixed by a fixing bolt. In the punching device according to claim 4,
The punching device, wherein the fixing bolt is screwed into the slider from a groove bottom constituting wall of the arm holder through a bolt insertion slit formed in the sliding shaft portion (145) in the axial direction.

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