Three-hole punching binding machine

Abstract

The utility model relates to a three-hole punching binding machine which comprises a rack and an installation platform capable of vertically moving along the rack, a left punching motor, a middle punching motor, a right punching motor and a horizontally-arranged guide rail are arranged on the installation platform, the left punching motor and the right punching motor can move along the guide rail, and the middle punching motor is fixed to the installation platform; the left punching motor is fixedly connected with a left sliding block capable of moving along the guide rail, and the left punching motor is fixedly connected with a right sliding block capable of moving along the guide rail. The installation platform is provided with a shear fork type telescopic mechanism used for driving the left sliding block and the right sliding block to move horizontally. According to the shear fork type telescopic mechanism, the horizontal movement distance driven by a lead screw nut is amplified through a shear fork, the punching hole distance can be rapidly adjusted, the hole distance can be adjusted only manually, and compared with a lead screw nut mechanism, the shear fork type telescopic mechanism can disperse loads due to the design of a cross arm of the shear fork type telescopic mechanism, and the punching efficiency is improved. Good stability is kept, and vibration and shaking are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a three-hole punching stapler belongs to office supplies technical field. BACKGROUND

[0002] After the completion of the file, archive needs to be bound and stored, and the paper needs to be punched by a puncher before threading and binding during the binding process. The commonly used binding machine is a three-hole punching stapler, and the existing three-hole punching stapler is manually punched, cannot adjust the hole distance of punching, and has a single purpose.

[0003] The applicant found that the Chinese patent with the authorization announcement number CN210879981U discloses a hole distance adjustable automatic three-hole punching stapler, an inverted U-shaped support is arranged on the rack, an electric push rod is arranged on the U-shaped support, the distance between the left adjusting block, the right adjusting block and the positioning block is adjusted through the electric push rod, and the hole distance of punching is adjusted. However, the patent directly adjusts the movement of the left adjusting block and the right adjusting block by using a screw nut mechanism, the movement efficiency is low, and in order to improve the efficiency, the electric push rod must be used when moving a long distance. Moreover, the left adjusting block and the right adjusting block are directly driven by the screw nut mechanism containing the electric push rod, and vibration and shaking are easily generated during the movement. UTILITY MODEL CONTENT

[0004] The technical problem to be solved by the utility model is to provide a three-hole punching stapler capable of quickly adjusting the hole distance of punching.

[0005] To solve the above technical problems, the technical scheme provided by the utility model is as follows: a three-hole punching stapler, comprising a rack, an installation platform vertically movable along the rack, a left punching motor, a middle punching motor, a right punching motor and a horizontally arranged guide rail arranged on the installation platform, the left punching motor and the right punching motor being movable along the guide rail, the middle punching motor being fixed on the installation platform, and a punching drill being arranged on the output shaft of each of the left punching motor, the middle punching motor and the right punching motor; characterized in that the left punching motor is fixedly connected with a left sliding block movable along the guide rail, and the left punching motor is fixedly connected with a right sliding block movable along the guide rail; a scissor-type telescopic mechanism for driving the left sliding block and the right sliding block to horizontally move is arranged on the installation platform, and the punching distance is adjusted.

[0006] The scissor type telescopic mechanism can adopt a split design, including a left scissor type telescopic mechanism for driving the left sliding block to move horizontally and a right scissor type telescopic mechanism for driving the right sliding block to move horizontally, and the driving is controlled respectively. Preferably, the scissor type telescopic mechanism adopts an integrated design, that is, including a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a fifth connecting rod and a sixth connecting rod; the first connecting rod and the second connecting rod are arranged in a cross manner and are hinged through a hinge shaft fixed on the mounting platform; the two ends of the third connecting rod are hinged with the left sliding block and the left end of the first connecting rod respectively, and the two ends of the fourth connecting rod are hinged with the left sliding block and the left end of the second connecting rod respectively; the two ends of the fifth connecting rod are hinged with the right sliding block and the right end of the first connecting rod respectively, and the two ends of the sixth connecting rod are hinged with the right sliding block and the right end of the second connecting rod respectively; the scissor type telescopic mechanism further includes a lead screw arranged on the mounting platform and parallel to the guide rail and a nut matched with the lead screw, and the nut is arranged on the left sliding block or the right sliding block. In this way, the left and right sliding blocks can be better controlled synchronously, and the distance between the middle punching motor and the left and right punching motors can be kept equal.

[0007] The scissor type telescopic mechanism can adopt a split design, including a left scissor type telescopic mechanism for driving the left sliding block to move horizontally and a right scissor type telescopic mechanism for driving the right sliding block to move horizontally, and the driving is controlled respectively. Preferably, the scissor type telescopic mechanism adopts an integrated design, that is, including a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a fifth connecting rod and a sixth connecting rod; the first connecting rod and the second connecting rod are arranged in a cross manner and are hinged through a hinge shaft fixed on the mounting platform; the two ends of the third connecting rod are hinged with the left sliding block and the left end of the first connecting rod respectively, and the two ends of the fourth connecting rod are hinged with the left sliding block and the left end of the second connecting rod respectively; the two ends of the fifth connecting rod are hinged with the right sliding block and the right end of the first connecting rod respectively, and the two ends of the sixth connecting rod are hinged with the right sliding block and the right end of the second connecting rod respectively; the scissor type telescopic mechanism further includes a lead screw arranged on the mounting platform and parallel to the guide rail and a nut matched with the lead screw, and the nut is arranged on the left sliding block or the right sliding block. In this way, the left and right sliding blocks can be better controlled synchronously, and the distance between the middle punching motor and the left and right punching motors can be kept equal. BRIEF DESCRIPTION OF DRAWINGS

[0008] The utility model makes further explanation in combination with the drawings.

[0009] Figure 1 It is the front view schematic drawing of the utility model embodiment.

[0010] Figure 2 It is the back view schematic drawing of the utility model embodiment.

[0011] Figure 3 It is the schematic drawing of the scissor type telescopic mechanism.

[0012] Reference signs: 1, rack; 2, left punching motor; 3, middle punching motor; 4, right punching motor; 5, guide rail; 6, punching drill bit; 7, left sliding block; 8, right sliding block; 9, first connecting rod; 10, second connecting rod; 11, third connecting rod; 12, fourth connecting rod; 13, fifth connecting rod; 14, sixth connecting rod; 15, lead screw; 16, vertical rod; 17, adjusting handle; 18, scrap box; 19, paper pressing plate; 20, supporting baffle; 21, return spring; 22, base. DETAILED DESCRIPTION

[0013] The embodiment relates to a three-hole punching and binding machine, as shown inFigure 1 and Figure 2 As shown in the figure, it comprises a rack 1, a mounting platform vertically movable along the rack 1, which is a prior art, such as a connecting rod mechanism, a hydraulic cylinder or an electric push rod, etc. can be used to realize vertical movement along the rack 1, for driving the movement of each punching motor and the paper pressing plate.

[0014] The mounting platform is provided with a left punching motor 2, a middle punching motor 3, a right punching motor 4 and a horizontally arranged guide rail 5, the left punching motor 2 and the right punching motor 4 are movable along the guide rail 5, the middle punching motor 3 is fixed on the mounting platform, and a punching drill bit 6 is arranged on the output shaft of the left punching motor 2, the middle punching motor 3 and the right punching motor 4; the left punching motor 2 is fixedly connected with a left sliding block 7 movable along the guide rail 5, and the left punching motor 2 is fixedly connected with a right sliding block 8 movable along the guide rail 5; the mounting platform is provided with a scissor type telescopic mechanism for driving the horizontal movement of the left sliding block 7 and the right sliding block 8, and the distance between the left punching motor 2, the right punching motor 4 and the middle punching motor 3 is adjusted by the horizontal movement of the left sliding block 7 and the right sliding block 8, that is, the hole distance of the punching is adjusted.

[0015] The scissor type telescopic mechanism can be designed in a split type, comprising a left scissor type telescopic mechanism for driving the horizontal movement of the left sliding block 7, and a right scissor type telescopic mechanism for driving the horizontal movement of the right sliding block 8, which are respectively controlled and driven, but the operation is relatively cumbersome. Preferably, in the embodiment as shown in the figure, Figure 2 and Figure 3As shown, the scissor type telescopic mechanism adopts an integrated design, that is, it comprises a first connecting rod 9, a second connecting rod 10, a third connecting rod 11, a fourth connecting rod 12, a fifth connecting rod 13 and a sixth connecting rod 14; the first connecting rod and the second connecting rod 10 are cross arranged and are hingedly connected through a hinge shaft fixed on the mounting platform; the two ends of the third connecting rod 11 are respectively hingedly connected with the left sliding block 7 and the left end of the first connecting rod 9, and the two ends of the fourth connecting rod 12 are respectively hingedly connected with the left sliding block 7 and the left end of the second connecting rod 10; the two ends of the fifth connecting rod 13 are respectively hingedly connected with the right sliding block 8 and the right end of the first connecting rod 9, and the two ends of the sixth connecting rod 14 are respectively hingedly connected with the right sliding block 8 and the right end of the second connecting rod 10; the scissor type telescopic mechanism further comprises a lead screw 15 arranged on the mounting platform and parallel to the guide rail 5 and a nut matched with the lead screw 15, and the nut (not shown in the figure) is arranged on the left sliding block 7 or the right sliding block 8. In use, the scissor type telescopic mechanism is driven by the lead screw 15 and the nut, and the movement of the nut along the lead screw 15 is converted into the movement of the left and right sliding blocks 7, 8, so that the left and right sliding blocks 7, 8 can be better controlled synchronously, and the distance between the middle punching machine 3 and the left and right punching machines 2, 4 can be prevented from being not equal, and the scissor type telescopic mechanism has an amplification effect on the movement of the nut along the lead screw, so that the left and right sliding blocks 7, 8 can be quickly moved. Preferably, in order to facilitate adjustment, the end of the lead screw 15 is provided with an adjustment handle 17.

[0016] The working process of the embodiment is as follows: the document to be punched is placed on the base 22 of the punching machine, the distance between the left punching machine 2, the right punching machine 4 and the middle punching machine 3 is adjusted through the scissor type telescopic mechanism, so as to adjust the hole pitch of punching. The mounting platform is moved downward to make the punching drills 6 of the left punching machine 2, the middle punching machine 3 and the right punching machine 4 abut against the document, and then the punching is performed. After the punching is completed, the mounting platform drives the left punching machine 2, the middle punching machine 3, the right punching machine 4 and the scissor type telescopic mechanism to move upward, and finally the document is taken out.

[0017] The embodiment can also be improved as follows: 1) a paper pressing plate 19 is arranged below the guide rail 5, the paper pressing plate 19 is provided with at least two vertical rods 16 extending upward, a supporting baffle 20 parallel to the paper pressing plate 19 is arranged on the mounting platform, the supporting baffle 20 is provided with through holes corresponding to the vertical rods 16, a reset spring 21 is sleeved on the vertical rod 16, and the two ends of the reset spring 21 are respectively connected with the paper pressing plate 19 and the supporting baffle 20. When the mounting platform moves downward, the paper pressing plate 19 first abuts against the document, and then the punching operation is performed, so as to prevent the document from moving. After the punching is completed, the mounting platform moves upward, and under the driving of the reset spring 21, the paper pressing plate 19 moves upward, so as to release the document.

[0018] 2) A scrap box 18 is arranged below the rack 1 for collecting the scraps left after punching.

Claims

1. A three-hole punch bookbinding machine, comprising a frame, a mounting platform vertically movable along the frame, a left punch motor, a middle punch motor, a right punch motor and a horizontally arranged guide rail provided on the mounting platform, the left punch motor and the right punch motor being movable along the guide rail, the middle punch motor being fixed on the mounting platform, and a punch drill bit being provided on an output shaft of each of the left punch motor, the middle punch motor and the right punch motor; characterized in that: The left punching motor is fixedly connected with the left sliding block movable along the guide rail, and the left punching motor is fixedly connected with the right sliding block movable along the guide rail; the mounting platform is provided with a scissor type telescopic mechanism for driving the left sliding block and the right sliding block to move horizontally, for adjusting the punching distance.

2. The three-hole punch bookbinder of claim 1 wherein: The scissor type telescopic mechanism comprises a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a fifth connecting rod and a sixth connecting rod. The first connecting rod and the second connecting rod are cross arranged and are hingedly connected through a hinge shaft fixed on the mounting platform. Two ends of the third connecting rod are respectively hingedly connected with the left sliding block and the left end of the first connecting rod, and two ends of the fourth connecting rod are respectively hingedly connected with the left sliding block and the left end of the second connecting rod. Two ends of the fifth connecting rod are respectively hingedly connected with the right sliding block and the right end of the first connecting rod, and two ends of the sixth connecting rod are respectively hingedly connected with the right sliding block and the right end of the second connecting rod. The scissor type telescopic mechanism further comprises a lead screw arranged on the mounting platform and parallel to the guide rail, and a nut matched with the lead screw, the nut being arranged on the left sliding block or the right sliding block.

3. The three-hole punch bookbinder of claim 2 wherein: An adjusting handle is arranged at an end of the lead screw.

4. The three-hole punch bookbinder of claim 1 or 2, wherein: A paper pressing plate is arranged below the guide rail, the paper pressing plate is provided with at least two vertical rods extending upward, a supporting baffle parallel to the paper pressing plate is arranged on the mounting platform, the supporting baffle is provided with through holes corresponding to the vertical rods, a reset spring is sleeved on the vertical rod, and two ends of the reset spring are respectively connected with the paper pressing plate and the supporting baffle.

5. The three-hole punch bookbinder of claim 4 wherein: A scrap box is arranged below the frame.

6. The three-hole punch bookbinder of claim 1 wherein: The scissor type telescopic mechanism comprises a left scissor type telescopic mechanism for driving the left sliding block to move horizontally, and a right scissor type telescopic mechanism for driving the right sliding block to move horizontally.

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