JP5428842B2 - Saddle binding stapler and its assembly jig - Google Patents

Description

  The present invention relates to a saddle stitching stapler that expands an allowable range of a core position in the left-right direction of a stapler, and an assembly jig that positions and assembles a magazine unit and a fixed clincher of the stapler for saddle stitching.

  In general, the saddle stitching stapler is a clincher method in which a staple driving driver and a clincher for bending a staple leg penetrating through a binding sheet are vertically separated. It can be roughly divided into a movable clincher method and a fixed clincher method. The movable clincher method is a method in which the movable clincher turns and bends its legs after the staple has completely penetrated the binding paper. The fixed clincher method is fixed immediately after the staple legs penetrate the binding paper. The clincher grooves are guided in order and bent.

  Of these two methods, the fixed clincher method is widely used from an inexpensive low-speed machine to an expensive high-speed machine finisher. The reason for this is that, in the case of a saddle-stitched booklet, which does not require a clincher drive mechanism, has a simple structure, can be reduced in cost, and can save space, the legs of the staples on both sides that penetrate the booklet are straight. For example, it is possible to align the spelling position with the fold because it is lined up. In addition, because of the manufacturing cost of the finisher, since a technology for folding a thick sheet at a time has not been established, it is sufficient that the stapler has a binding capacity of about 25 to 30 sheets, which is more expensive than the binding capacity. Reduction is required.

  By the way, in the case of a fixed clincher, even if the driver and the member to which the clincher is attached are slightly displaced back and forth, the staple legs pushed out by the driver are bent so as to be aligned in a straight line. Since there is no problem such as overlapping of legs and it is easy to pick up in the clincher groove, the permissible range is relatively wide with respect to the positional deviation before and after the core. However, since the clincher is fixed and symmetrical with respect to the positional deviation of the staple in the left-right direction of the staple, the tip of one leg of the staple and the tip of the other leg hit only with a slight deviation. The situation of the clincher groove is completely different. In other words, if the tip of one leg hits a high part of the inclined surface at one end of the clincher groove, the tip of the other leg hits a low part of the inclined surface at the other end of the clincher. The part is difficult to bend evenly. Accordingly, the allowable range in this case is small, and very severe accuracy is required, so a large jig or a complicated structure has to be employed for alignment.

On the other hand, as a method of expanding the permissible range for the misalignment of the core position in the front-rear direction of the movable clincher with a simple structure, a margin dimension is provided between the members constituting the clamp mechanism for clamping the binding paper at the time of binding and is allowed to float. Technology is known (patent document
1).

Japanese Patent No. 4232371

  However, with the technique shown in Patent Document 1, alignment in the front-rear direction can be performed, but it cannot cope with alignment in the left-right direction.

  It is a first object of the present invention to provide a saddle stitching stapler capable of solving the above-described problems and expanding the allowable range of the core position in the left-right direction and always performing good binding.

  Moreover, this invention makes it the 2nd subject to provide the assembly jig which positions and assembles the relative position of a magazine unit and a fixed clincher.

In order to solve the above-mentioned problem, the invention according to claim 1 is capable of moving a magazine unit having a driver for driving staples supplied from a magazine containing a large number of staples toward the binding paper, to the side of the binding paper. In a saddle stitching stapler in which a guide frame for guiding and a fixed clincher which is punched after the operation of clamping the binding sheet and penetrates the binding sheet and which is bent by picking up and bending the staple leg portion are vertically separated The width between the top and bottom of the guide slope formed on the left and right sides of the fixed clincher and picking up the tip of the leg is set to the clearance between the magazine unit and the guide frame. formed to be equal to the lateral direction of the component stacked dimension plus tolerance of magazine unit, the moth The left and right sides of each of the main frame and the magazine unit are used as a reference plane, and the magazine unit in a standby state is applied to one side of the guide frame so that the reference plane of the magazine unit is aligned with the reference plane of the guide frame. Thus, a guide means for guiding is provided .

According to a second aspect of the present invention, there is provided a guide frame that movably guides a magazine unit including a driver that drives a staple supplied from a magazine containing a large number of staples toward the binding sheet, An assembling jig for a stapler for saddle stitching, wherein a fixing clincher that is punched after the operation of clamping the binding paper and penetrates the binding paper and picks up and bends the staple leg ends is assembled. A first insertable portion having a shape insertable between the guide frame and the fixed clincher and capable of being respectively applied to a first reference surface provided on the guide frame and a second reference surface provided on the fixed clincher. When it is inserted between the guide frame and the fixed clincher while it has an abutting part and a second abutting part And a first pressing means and a second pressing means for applying the first abutting portion and the second abutting portion to the first reference surface and the second reference surface, respectively. Features.

  According to the first aspect of the present invention, the width between the top and bottom of each guide slope formed on the left and right sides of the fixed clincher is set so that the gap between the magazine unit and the guide frame is the same as the guide frame and the magazine. By setting the unit so that it is equal to the dimension of the unit stacking tolerance in the left-right direction, the staple unit is stapled to the left and right of the center of the guide slope regardless of the left or right side of the magazine unit with respect to the center of the guide frame. Since there is a margin for picking up the tip of the leg, automatic alignment is performed without a special mechanism for position adjustment. Therefore, even if the position of the left and right positions is severe, such as a fixed clincher, even if the guide slope that picks up the staple leg is used effectively, the center position of the magazine unit will be shifted to the left or right. Since the allowable range can be expanded, buckling of the staple legs can be prevented, and a satisfactory binding operation can always be performed.

Further, a reference surface on one side of left and right guide frame and the magazine unit of the magazine unit, the guide frame, the magazine unit in the standby state to the reference surface of the guide frame abutting the one side of the guide frame Since guide means is provided for guiding the reference plane of the magazine unit to be aligned, when the magazine unit is in the standby position, the magazine unit is applied to the reference plane side of the guide frame, and between the guide frame and the magazine unit. The gap is zero. Since the magazine unit is released from the guide means at the time of the spelling operation, the gap dimension between the magazine unit and the guide frame set in advance to guide the magazine unit to be movable, and the left and right sides of the guide frame and the magazine unit are set. It is possible to move to the side opposite to the reference plane of the guide frame by the clearance tolerance including the component stacking tolerance in the direction. In this state, the tip of one leg of the staple driven into the binding paper hits the top of the guide slope on the fixed clincher application side, but the magazine unit can move to the side opposite to the reference plane of the guide frame. The tip of one leg of the staple slides along the guide slope, and moves to the center side of the guide slope to automatically align. Therefore, the leg portions on both sides of the staple are evenly bent, and the spelling is completed. After the end of the spelling, when the magazine unit returns to the standby position, the magazine unit is guided by the guide means of the guide frame so as to be forcibly applied again to the reference plane side of the guide frame.

  Thus, when the magazine unit returns to the reference position during standby, there is no gap between the guide frame and the magazine unit, and the width between the top and bottom of the guide slope is made equal to the gap tolerance. As a result, the tip end of the staple that has been driven in always comes close to the top of the guide slope on the abutment side, so that the magazine unit can move the entire width of the guide slope for automatic alignment. . Therefore, the left and right core allowable ranges can be further expanded.

According to the invention of claim 2 , the assembly jig has a shape that can be inserted between the guide frame and the fixed clincher, and the first reference surface provided on the guide frame and the first reference surface provided on the fixed clincher. A first abutting portion and a second abutting portion that can be respectively abutted on the two reference surfaces, and the first abutting portion when inserted between the guide frame and the fixed clincher. And the second abutting portion are respectively provided with the first pressing means and the second pressing means for applying the first reference surface and the second reference surface to the first reference surface and the second reference surface, respectively. By inserting in between, the first abutting portion is abutted against the first reference surface of the guide frame by the first pressing means, and the second abutting portion is fixed to the first of the fixed clincher by the second pressing means. 2 on the reference plane By attaching Te, if the first abutting section and the second abutting portion and accurately positioned, automatically the first reference plane and the second reference plane is accurately positioned. Therefore, the guide frame and the fixed clincher can be positioned with high accuracy by a simple operation.

The perspective view of the principal part of the stapler for saddle stitching concerning this invention Front view of FIG. Enlarged view of part A in FIG. Enlarged view of part B in FIG. Front view of a saddle-stitching stapler in a standby state showing an embodiment for further expanding the core allowable range 5 is an enlarged cross-sectional view showing positions of leg portions of the staple when the magazine unit is applied to the first reference surface side in the embodiment of FIG. Front view of the saddle stitch stapler showing the magazine unit released from the applied force (A) (b) is a perspective view of an assembling jig The perspective view which shows the aspect assembled using an assembly jig Front view showing a mode of assembly using an assembly jig

  1 to 4, the saddle stitching stapler is driven out by a guide frame 4 supporting a magazine unit 3 including a magazine 1 for storing staples and a driver 2 for driving staples supplied from the magazine 1 toward binding sheets. A fixed clincher 6 having a guide slope 5 for picking up staples for bending the staples is arranged in a vertically separated manner, and a driving mechanism and a driver 2 for clamping the magazine 1 are driven into the magazine unit 3. A drive mechanism and an electric motor are also included. The fixed clincher 6 is formed in a block shape, and a clincher groove 7 is formed in the center of the upper surface as shown in FIG. 4, and guide slopes 5 are formed on both sides thereof. In addition, since these mechanisms are well-known, description is abbreviate | omitted.

  In this saddle stitching stapler, when the binding paper P is inserted between the guide frame 4 and the fixed clincher 6 and the driver driving mechanism is operated, the magazine unit 3 descends and presses the binding paper downward to fix the fixed clincher 6. Further, the staples are driven into the binding paper P by the driver 2 and the tips of the leg portions of the staples penetrating the binding paper are bent against the guide slopes 5 of the fixed clincher 6 to complete the binding operation.

  By the way, in order to satisfactorily bind the binding paper P, in this saddle stitching stapler, as shown in FIG. 4, the gap between the top 10 and the bottom 11 of the guide slope 5 formed on the left and right sides of the fixed clincher 6. The width w is equal to the dimension obtained by adding the horizontal stacking tolerance of the guide frame 4 and the magazine unit 3 to the gap dimension C (see FIG. 3) between the magazine unit 3 and the guide frame 4. ing. For this reason, the frame main body 4A integral with the guide frame 4 and the mounting brackets 12a, 12a provided on the finisher device side, which are extracted from the main parts, are first attached to the screws 12, 12 (see FIG. 2). The fixed clincher 6 is temporarily fixed to the clincher support members 12b and 12b provided on the finisher device side with screws 12c and 12c, and the center of the fixed clincher 6 is aligned with the center of the guide frame 4 to support the clincher. Securely tighten the screws to the member.

  In the above configuration, the center of the guide frame 4 is the imaginary center position of the magazine unit 3, and this center position corresponds to the position of the staple leg 13 shown by the solid line in FIG.

  Therefore, when the guide frame 4 and the fixed clincher 6 are set as described above and the binding operation is performed, the driver 2 operates to drive the staple toward the binding sheet after the clamping operation is completed. At this time, the driver 2 shifts to the left or right side depending on the sum of the gap dimension between the magazine unit 3 and the guide frame 4 and the component stacking tolerance in the left-right direction (hereinafter referred to as gap tolerance).

  However, by setting the positional relationship between the width of the guide slope 5 of the fixed clincher 6 and the clearance tolerance as described above, the magazine unit 3 can be shifted to the left or right side with respect to the center of the guide frame 4. When the maximum deviation is made according to the clearance tolerance, the leading end of the staple leg 13 struck from the driver 2 of the magazine unit 3 is set so as to contact the right or left end of the guide slope 5 in FIG. ing. Therefore, when the tip of one leg 13a of the staple comes close to the top 10 of the guide slope 5 on the right side of the drawing, the tip immediately before the tip of the other leg hits the bottom of the left guide slope (not shown). Therefore, the right staple leg 13 slides along the guide slope 5 and moves to the center side of the guide slope 5, and the left staple leg also moves to the center side of the guide slope. Conversely, when the tip of one leg 13b of the staple approaches the bottom 11 side of the guide slope 5 in FIG. 4, the tip of the other leg is already on the left guide (not shown) immediately before hitting the bottom 11. Since it hits the top of the slope and moves along the left guide slope, the tips of the legs on both sides move to the center side of the guide slope. Therefore, the alignment is automatically performed when the left or right side is approached. As described above, since the margin for picking up the tip of the staple leg 13 can be provided on the left and right of the center of the guide slope 5, the staples can be automatically aligned even if there is no special mechanism for position adjustment. It is possible to surely pick up the tip of the leg portion. In this way, even with a mechanism that is severely aligned in the left-right position, such as the fixed clincher 6, the guide inclined surface 5 that picks up the leading end of the staple leg 13 is effectively used, and the core position of the magazine unit 3 is left and right. Even if biased, the permissible range of the core position can be expanded, so that buckling of the staple legs can be prevented, and a satisfactory binding operation can always be performed.

  Next, FIG. 5 is an embodiment for further expanding the core allowable range in the above-described embodiment. The right end surface of the guide frame 4 in the drawing is a first reference surface 14, and the left inner surface is a pair of upper and lower. A guide spring (guide means) 15 by a w-shaped corrugated spring is attached. As a result, when the magazine unit 3 returns to the standby position, the guide spring 15 is forcibly applied to the first reference surface 14 side of the guide frame 4 as indicated by an arrow. When the position of the fixed clincher 6 is adjusted, the right end surface 16 of the fixed clincher 6 in the drawing is used as the second reference surface 16, and the first reference surface 14 and the second reference surface 16 form the guide frame. 4 and the fixed clincher 6 are positioned and fixed. For positioning, when the staple is driven in a state where the magazine unit 3 is applied to the first reference surface 14 side, the tip of one leg 13 of the staple is applied to the fixed clincher 6 as shown in FIG. It sets so that it may hit near the top part 10 of the guide slope 5 of the side.

  The magazine unit 3 is configured to be released from the abutting force by the guide spring 15 of the guide frame 4 after the clamping of the binding paper is completed.

  According to the above configuration, when the magazine unit 3 is in the standby position, the magazine unit 3 is applied to the first reference plane 14 side of the guide frame 4. The gap is zero. When the binding operation is performed, the magazine unit 3 moves downward to clamp the binding paper P between the fixed clincher 6 as shown in FIG. When the clamping operation is finished, the magazine unit 3 is detached from the guide spring 15 and released from the abutting force, so that it can move to the left by the clearance tolerance as shown by the arrow in FIG. In this state, the staple is driven through and penetrates the binding paper, and the tip of one leg 13 of the staple hits the vicinity of the top 10 of the guide slope 5 on the abutting side of the fixed clincher 6 as shown in FIG. Similarly to the above, the tip end of the other leg 13 is in a position immediately before hitting the bottom of the left guide slope (not shown), so the right staple leg 13 slides along the guide slope 5 and the arrow in FIG. In this way, the left side staple leg moves to the center side of the guide slope and is automatically aligned. Therefore, the leg portions on both sides of the staple are evenly bent, and the spelling is completed.

  After the end of the spelling, the magazine unit 3 moves back to the standby position. At this time, as shown in FIG. 5, the magazine unit 3 is forced to the first reference surface 14 side again by the guide spring 15 of the guide frame 4. It will be guided so that it may be applied to, and it will be in the state where a gap is lost.

  As described above, when the magazine unit 3 returns to the reference position during standby, there is no gap between the guide frame 4 and the magazine unit 3, and the guide frame 4 on the first reference surface 14 side and the guide slope 5 on the abutment side. Since the tip of the staple leg 13 that has been driven in is always in contact with the apex 10 of the guide slope 5 on the abutment side, the magazine unit 3 has the guide slope 5. The full width of can be moved for automatic alignment. Therefore, the left and right core allowable ranges can be further expanded.

  The guide means may not be the guide spring 15. As long as the magazine unit 3 can be applied to the first reference surface 14 side of the guide frame 4, it is not necessarily limited to the corrugated spring.

  Next, as described above, when the upper guide frame 4 and the lower fixed clincher 6 are assembled while being aligned, it is preferable to use the assembling jig 17 shown in FIGS.

  The assembling jig 17 includes an upper fitting portion 18 and a fixed clincher 6 on the upper and lower portions of a rectangular parallelepiped jig main body 17a having a shape that can be inserted between the guide frame 4 and the fixed clincher 6, respectively. A lower fitting portion 19 is provided, and a first abutting portion 20 and a second abutting portion 21 are respectively provided on one side of the upper and lower fitting portions 18 and 19. The first abutting portion 20 and the second abutting portion 21 are configured such that when the guide frame 4 and the fixed clincher 6 are positioned in a predetermined positional relationship, the first abutting portion 20 is connected to the guide frame 4. The second abutting portion 21 abuts on the first reference surface 14 and is accurately positioned so as to abut on the second reference surface 16 of the fixed clincher 6. In order to obtain the accuracy, one of the first or second abutting portions 20 or 21 may be finely adjusted. Reference numeral 24 denotes a handle for operating the assembly jig 17.

  Next, the upper fitting portion 18 and the lower fitting portion 19 are provided with fitting allowances, and the first spring 22 and the second fitting portion are respectively provided on the opposite sides of the first abutting portion 20 and the second abutting portion 21. A spring 23 (both are pressing means using a leaf spring) is attached. Thus, the guide frame 4 and the fixed clincher 6 are elastically fitted into the upper fitting portion 18 and the lower fitting portion 19.

  When aligning and assembling the guide frame 4 and the fixed clincher 6 with the assembling jig 17 having the above-described configuration, as shown in FIGS. 9 and 10, the frame main body 4a and the main part are shown as extracted. Are fixed to the clincher support members 12b and 12b provided on the finisher device side with screws 12c and 12c. The mounting brackets 12a and 12a are fixed to the mounting brackets 12a and 12a with screws 12 and 12 (see FIG. 10). To do. In this state, the assembling jig 17 is inserted between the guide gram 4 and the fixed clincher 6, and the guide frame 4 is fitted into the upper fitting portion 18, and the fixed clincher 6 is fitted into the lower fitting portion 19. As a result, the first abutting portion 20 is abutted against the first reference surface 14 of the guide frame 4 by the pressing force of the first spring 22, and the second abutting portion 21 is disposed on the second spring 23. Since it is applied to the second reference surface 16 of the fixed clincher 6 by the pressing force, the first reference surface 14 and the second reference surface 16 are positioned with high accuracy. After that, the fixed clincher 6 is fixed to the clincher support members 12b and 12b by finally tightening and fixing the screws 12c and 12c temporarily fixing the fixed clincher 6.

  Therefore, according to the assembly jig 17, the first reference surface 14 of the guide frame 4 and the second reference surface 16 of the fixed clincher 6 can be positioned with high accuracy by a simple operation. The relative positional relationship between 4 and the fixed clincher 6 can be made highly accurate. As a result, it is possible to obtain a saddle stitch stapler capable of performing a good binding operation.

  The first and second pressing means are not limited to springs. For example, a method of pressing and applying by screwing may be used.

DESCRIPTION OF SYMBOLS 1 Magazine 2 Driver 3 Magazine unit 4 Guide frame 5 Guide slope 6 Fixed clincher 13 Leg tip 14 First reference surface 15 Guide spring (guide means)
16 Second reference surface 17 Assembly jig 20 First abutting portion 21 Second abutting portion 22 First spring (first pressing means)
23 Second spring (second pressing means)

Claims (2)

After a guide frame for guiding a magazine unit provided with a driver for driving staples supplied from a magazine containing a large number of staples toward the binding paper, to the side of the binding paper, and the operation of clamping the binding paper In the stapler for saddle stitching, which is arranged separately from the upper and lower fixed clincher, which is punched and penetrates the binding sheet and picks up the tip of the staple leg and folds it.
The width between the top and the bottom of the guide slope formed on the left and right sides of the fixed clincher and picking up the tip of the leg is set to the clearance between the magazine unit and the guide frame. It is formed to be equal to the dimension of the magazine unit plus the horizontal component stacking tolerance ,
The left and right sides of the guide frame and the magazine unit are used as reference planes, and the standby magazine unit is applied to one side of the guide frame so that the reference plane of the magazine unit is placed on the reference plane of the guide frame. A stapler for saddle stitching, characterized in that a guide means for guiding them so as to match is provided . After a guide frame for guiding a magazine unit provided with a driver for driving staples supplied from a magazine containing a large number of staples toward the binding paper, to the side of the binding paper, and the operation of clamping the binding paper An assembling jig for a stapler for saddle stitching, which is assembled by separating and assembling a fixed clincher which is punched and penetrates the binding sheet and picks up and folds the leading end of the staple leg.
A first shape that can be inserted between the guide frame and the fixed clincher and can be applied to a first reference surface provided on the guide frame and a second reference surface provided on the fixed clincher. And a second abutting portion, and when inserted between the guide frame and the fixed clincher, the first abutting portion and the second abutting portion are respectively connected to the first abutting portion and the second abutting portion. An assembling jig for a saddle stitching stapler, comprising a first pressing means and a second pressing means applied to one reference surface and a second reference surface.

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