File binding machine with adjustable drilling hole spacing

Abstract

The present invention discloses a file binding machine capable of adjusting the drilling hole spacing. The drilling device is provided with at least one drilling unit which is installed in a transverse sliding manner on a drilling lifting seat. The drilling cutter transverse driving mechanism is connected to the drilling unit which is installed in a transverse sliding manner. The automatic wire feeding device is provided with at least one needle unit which is installed in a transverse sliding manner on a lifting plate. The needle body transverse driving mechanism is connected to the needle body unit which is installed in a transverse sliding manner. The present invention can automatically adjust the position of the drilling cutter and the wire feeding needle in the transverse direction, can adjust the drilling hole spacing, and the file binding machine can adjust the binding hole spacing.

Description

Technical Field

[0001] The invention relates to the technical field of file binding machines, in particular to a file binding machine capable of adjusting drilling hole spacing. Background Art

[0002] The file binding machine is used for binding bills, vouchers and documents, etc. The file binding machine is provided with a document binding platform in the middle of the frame, a drilling device is provided above the document binding platform, and a wire feeding device is provided below the document binding platform. Three drilling motors are fixed at horizontal intervals on the drilling lifting seat of the drilling device, and a drill is installed at the bottom of each drilling motor. Three wire feeding needles are fixed at horizontal intervals on the upper part of the wire feeding lifting plate of the wire feeding device, and one wire feeding needle is vertically aligned with a drill. The horizontal position of the drill and the position of the wire feeding needle in the horizontal direction of the current file binding machine are relatively fixed and cannot be moved in the horizontal direction. The file binding machine cannot change the horizontal position of each drilling motor, drill and wire feeding needle during use. The file binding machine cannot adjust the drilling spacing and the binding hole spacing. Therefore, it is necessary to improve it. Summary of the invention

[0003] In view of the shortcomings of the prior art, the object of the present invention is to provide a file binding machine with adjustable drilling hole spacing, which can adjust the binding hole spacing.

[0004] In order to achieve the above-mentioned purpose, the technical scheme adopted by the present invention is: an archive binding machine with adjustable drilling spacing, comprising a frame, a document binding platform for placing or fixing binding documents, a drilling device for drilling binding through holes in the binding documents, an automatic wire feeding device and a control circuit for controlling the drilling device and the automatic wire feeding device, the document binding platform is installed in the middle of the frame, a drilling device for drilling holes moving up and down is arranged above or below the document binding platform, an automatic wire feeding device is arranged above or below the document binding platform, and the drilling device is provided with a drilling A hole lifting mechanism, a drilling lifting seat, a drill transverse driving mechanism and at least two drilling units arranged at intervals in a transverse direction on the drilling lifting seat, the drilling lifting mechanism is installed on a frame or a document binding platform, the drilling lifting mechanism is connected to the drilling lifting seat in a transmission manner, wherein at least one drilling unit is installed in a transverse sliding manner on the drilling lifting seat, at least one drill transverse driving mechanism is installed on the frame and / or the drilling lifting seat, the drill transverse driving mechanism is connected in a transmission manner to the drilling unit installed in a transverse sliding manner, and one drilling unit is provided with at least one drilling motor and a drill connected to the drilling motor in a transmission manner;

[0005] The automatic wire feeding device is laterally spaced and provided with needle units corresponding to the drilling units, needle body transverse driving mechanisms, wire feeding lifting mechanisms and lifting plates. The wire feeding lifting mechanism is installed on a frame or a document binding platform, and the wire feeding lifting mechanism is connected to the lifting plate in a transmission manner. At least one needle unit is installed in a transverse sliding manner on the lifting plate, and the needle body transverse driving mechanism is installed on the frame or the lifting plate. The needle body transverse driving mechanism is connected to the needle body unit installed in a transverse sliding manner. One needle body unit is provided with a vertically arranged wire feeding needle; each wire feeding needle is longitudinally aligned or vertically aligned with a corresponding drill.

[0006] Further, the drilling lifting mechanism includes a drilling lifting motor and a drilling lifting transmission mechanism electrically connected to the control circuit, the drilling lifting motor is transmission-connected to the drilling lifting transmission mechanism, the drilling lifting transmission mechanism is transmission-connected to the drilling lifting seat, the drilling lifting seat is vertically slidably installed on the frame, a plurality of the drilling units are laterally spaced apart on the drilling lifting seat, all the drilling units or at least two of the drilling units are laterally slidably installed on the drilling lifting seat, and each drilling unit that is laterally slidably installed is transmission-connected to the same drill transverse driving mechanism or is respectively transmission-connected to a corresponding drill transverse driving mechanism;

[0007] The wire feeding lifting mechanism includes a lifting motor and a wire feeding lifting transmission mechanism electrically connected to the control circuit. The lifting motor is installed on the frame. The lifting motor is connected to the wire feeding lifting transmission mechanism. The wire feeding lifting transmission mechanism is connected to the lifting plate. The lifting plate is vertically slidably installed on the frame. The lifting plate is laterally spaced with a plurality of needle units. All needle units or at least two of the needle units are laterally slidably installed on the lifting plate. Each needle unit that is laterally slidably installed is connected to the same needle transverse driving mechanism or is respectively connected to the corresponding needle transverse driving mechanism.

[0008] Furthermore, the drilling device is provided with a drilling unit fixedly mounted on the drilling lifting seat and a drilling unit laterally slidably mounted on the drilling lifting seat.

[0009] The drilling unit fixed to the drilling lifting seat includes a drilling motor fixedly installed on the upper part of the drilling lifting seat and electrically connected to the control circuit, and a drill bit transmission-connected to the drilling motor.

[0010] The drilling unit slidably mounted on the drilling lifting seat comprises a drilling slide slidably mounted on the upper part of the drilling lifting seat, a drilling motor fixed on the drilling slide and electrically connected to the control circuit, and a drill bit transmission-connected to the drilling motor;

[0011] The drilling lifting seat is provided with at least one drilling transverse sliding chamber, each drilling slide seat is transversely slidably installed in the corresponding drilling transverse sliding chamber, and each drilling slide seat is respectively connected to the corresponding drill transverse driving mechanism in a transmission manner;

[0012] The automatic wire feeding device is provided with a needle unit fixedly mounted on the lifting plate and a needle unit laterally slidably mounted on the lifting plate.

[0013] The needle unit fixedly mounted on the lifting plate includes the thread feeding needle whose lower part is fixed on the upper part of the lifting plate;

[0014] The needle unit slidably mounted on the lifting plate in a transverse direction comprises a seat body slidably mounted on the upper part of the lifting plate in a transverse direction and a thread feeding needle fixed on the upper part of the seat body;

[0015] The lifting plate is provided with at least one sliding chamber, and each seat body is respectively installed in a corresponding sliding chamber for transverse sliding, and each seat body is respectively connected to the corresponding needle body transverse driving mechanism for transmission;

[0016] The needle unit fixedly mounted on the lifting plate is aligned with the drilling unit fixed on the drilling lifting seat, and the needle unit laterally slidably mounted on the lifting plate is aligned with the drilling unit laterally slidably mounted on the drilling lifting seat.

[0017] Further, the drilling lifting seat is laterally spaced with three drilling units, the drilling unit located in the middle is fixed to the drilling lifting seat, the drilling units located on the left and right sides are respectively installed on the drilling lifting seat in a transverse sliding manner, the two drilling units located on the left and right sides are symmetrically arranged, a drill transverse driving mechanism is installed on the front side and / or the rear side of the middle part of the drilling lifting seat, and the drilling slides of the two drilling units located on the left and right sides are respectively connected to the drill transverse driving mechanism in a transmission manner;

[0018] Each drilling unit is provided with a drill having a hollow middle portion configured as a chip removal through hole and a lower wall configured as a circular blade;

[0019] The lifting plate is provided with three needle units at intervals in the horizontal direction, the needle unit in the middle is fixed to the lifting plate, the needle units on the left and right sides are respectively installed in the lifting plate in a horizontal sliding manner, the two needle units on the left and right sides are symmetrically arranged, a needle transverse driving mechanism is installed on the front side and / or the rear side of the middle part of the lifting plate, and the base bodies of the two needle units on the left and right sides are respectively connected to the needle transverse driving mechanism by transmission;

[0020] Each needle unit is provided with a vertically arranged wire feeding needle, the wire feeding needle has a rod body extending in the vertical direction, and the outer end of the wire feeding needle is provided with a wire feeding hook, a wire feeding groove or a wire feeding fork.

[0021] Furthermore, the drilling device is arranged above the document binding platform, and the automatic wire feeding device is arranged below the document binding platform, and the drilling device and the automatic wire feeding device are arranged opposite to each other up and down;

[0022] The document binding platform is provided with a binding wire groove extending transversely, and the binding wire groove is provided with a wire feeding slot hole which passes through the document binding platform from top to bottom at least at the position corresponding to each of the wire feeding needles, and when the wire feeding needles are in the initial position, the upper end of each wire feeding needle is movably inserted into the corresponding wire feeding slot hole;

[0023] A vertical guide column is respectively arranged on the left and right sides of the frame, the guide column is fixed above the document binding platform, and the left and right sides of the drilling lifting seat are respectively slidably mounted on the corresponding guide column;

[0024] Each drilling motor is provided with a drilling transmission shaft, and each drill bit is respectively transmission-connected or fixedly mounted on the drilling transmission shaft of the drilling motor belonging to the same drilling unit;

[0025] A vertically arranged wire feeding guide post is respectively arranged on the left and right sides of the frame, and the wire feeding guide post is fixed below the document binding platform, and the left and right sides of the lifting plate are respectively slidably installed on the corresponding wire feeding guide post.

[0026] Furthermore, a motor mounting position is provided in the middle of the drilling lifting seat, and a drilling motor is fixedly mounted on the motor mounting position;

[0027] A drilling transverse sliding chamber is respectively arranged on the left and right sides of the drilling lifting seat, and a drilling slide seat is respectively installed in the two drilling transverse sliding chambers for transverse sliding sliding, and a drilling motor belonging to the same drilling unit is respectively fixedly installed on the two drilling slide seats, and one drilling motor is correspondingly connected to one drilling cutter through transmission;

[0028] The drill cutter transverse driving mechanism comprises a push rod and a hole spacing adjustment cam rotatably mounted in the middle of the drilling lifting seat, the push rod is fixedly mounted or slidably mounted on the frame, the hole spacing adjustment cam is respectively connected to the left and right drilling slide seats, the push rod is matched with the hole spacing adjustment cam when adjusting the binding hole spacing, and the hole spacing adjustment cam is separated from the push rod during drilling or wire feeding;

[0029] The drilling lifting seat is provided with an initial drilling stop position, a lower drilling stop position and a hole spacing adjustment stop position, wherein the hole spacing adjustment stop position is arranged above the initial drilling stop position, and the initial drilling stop position is arranged above the lower drilling stop position;

[0030] The drilling device is provided with a drilling state and a binding hole spacing adjustment state.

[0031] When the drilling device is in the drilling state, the drilling lifting seat moves downward between the initial stop position of drilling and the lower stop position of drilling;

[0032] When the drilling device is in the binding hole pitch adjustment state, the drilling lifting seat moves upward between the drilling initial stop position and the hole pitch adjustment stop position;

[0033] When the drilling lifting seat moves from the initial stop position of drilling to the stop position of adjusting the hole spacing, the drilling lifting seat moves upward relative to the push rod, and the push rod pushes the hole spacing adjusting cam to drive the hole spacing adjusting cam to rotate and laterally push the left and right drilling slides respectively through the hole spacing adjusting cam.

[0034] Furthermore, the hole spacing adjustment cam is provided with at least two groups of wheel surface units with the same structure arranged along the circumferential direction, the inner ends of the left and right drilling slides are respectively provided with a positioning transmission recess, and the wheel surface unit is provided with at least two driving convex parts with different driving radii, and the driving convex parts abut against the positioning transmission concave parts to realize symmetrical and synchronous driving of the left and right drilling slides to synchronously move laterally;

[0035] The push rod is vertically arranged, the upper part of the push rod is fixed to the frame, the lower part of the push rod forms a push part, the front of the hole spacing adjustment cam is fixedly connected or transmission-connected to a one-way transmission ratchet, and the push part cooperates with the ratchet in the process of the drilling lifting seat moving from the drilling initial stop position toward the hole spacing adjustment stop position;

[0036] A ratchet disc is fixed in the middle of the drilling lifting seat, a cam shaft extends longitudinally from the middle of the ratchet disc, a hole distance adjustment cam is rotatably mounted on the cam shaft, the hole distance adjustment cam elastically abuts against the ratchet disc, and a ratchet is fixed in front of the hole distance adjustment cam;

[0037] The outer edge of the ratchet wheel is provided with a plurality of ratchet teeth spaced apart in the circumferential direction, and the lower part of the push rod is provided with a ratchet tooth pushing part protruding toward one side and cooperating with the ratchet teeth;

[0038] A circular convex ring is arranged on the outer edge of the ratchet disc, a circular ring groove is arranged on the side of the hole distance adjustment cam facing the ratchet disc, and the circular convex ring is movably embedded in the circular ring groove;

[0039] A plurality of one-way ratchets are evenly spaced in the circumferential direction in front of the ratchet disc, and a plurality of one-way ratchets are evenly spaced in the circumferential direction behind the hole-pitch adjusting cam for transmission cooperation with the one-way ratchets; or a plurality of one-way ratchets are evenly spaced in the circumferential direction in front of the ratchet disc, and a plurality of one-way ratchets are evenly spaced in the circumferential direction behind the hole-pitch adjusting cam for transmission cooperation with the one-way ratchets;

[0040] The drilling lifting seat or the drilling sliding seat is equipped with a lateral limit switch electrically connected to the control circuit;

[0041] The camshaft sleeve is provided with a cam return spring which abuts against the front of the hole distance adjustment cam;

[0042] A slide seat return spring which abuts against the drilling slide seat is installed in the drilling transverse sliding chamber.

[0043] Further, the drilling unit installed in a transverse sliding manner is provided with a drilling slide seat, and a transverse positioning locking mechanism is provided between the drilling lifting seat and the drilling slide seat, and the transverse positioning locking mechanism includes at least two locking columns and at least two transverse fixed-distance locking holes respectively provided on the drilling lifting seat and the drilling slide seat, one of which is provided on the drilling lifting seat and the other is provided on the drilling unit installed in a transverse sliding manner;

[0044] The transverse fixed-distance locking holes are matched with corresponding locking column plugs. After the drilling slide stops at any designated position, at least one locking column in each drilling slide is movably inserted into the corresponding transverse fixed-distance locking hole.

[0045] Furthermore, the lateral positioning lock mechanism comprises an unlocking rod, a lateral fixed-distance unlocking block, a plurality of the lock posts and a plurality of the lateral fixed-distance lock holes, the drilling slide seat is provided with a plurality of lock post mounting holes arranged at intervals in the lateral direction, and a lock post is mounted in each lock post mounting hole in a slidable manner in the vertical direction;

[0046] The drilling lifting seat is provided with a plurality of horizontally spaced locking holes in an area corresponding to the locking column mounting hole;

[0047] The unlocking rod is vertically slidably installed on the frame or the drilling lifting seat, and the unlocking rod is fixedly connected or transmission-connected to the corresponding transverse fixed-distance unlocking block, and the transverse fixed-distance unlocking block is respectively transmission-coordinated with each locking column, and is used to make each locking column respectively withdraw from the corresponding transverse fixed-distance lock hole when unlocking;

[0048] After the drilling slide stops at any specified position, at least two locking pins in each drilling slide are movably inserted into the corresponding two transverse fixed-distance locking holes; after the drilling slide stops at any specified position, the locking pins that are not aligned with any transverse fixed-distance locking holes elastically press against the drilling lifting seat.

[0049] Furthermore, a drilling transverse sliding chamber is provided on the left and right sides of the drilling lifting seat respectively;

[0050] The lower part of the transverse fixed distance unlocking block is provided with unlocking posts corresponding to the transverse fixed distance lock holes one by one at a transverse interval, and the lower part of each unlocking post is respectively inserted in the corresponding transverse fixed distance lock hole, and each transverse fixed distance lock hole is provided with an unlocking post movably inserted therein;

[0051] The lower end of the unlocking rod abuts against the upper part of the transverse fixed-distance unlocking block, and the unlocking rod sleeve is provided with an unlocking rod reset spring for elastically abutting the unlocking rod to move toward the side where the transverse fixed-distance unlocking block is located;

[0052] When the drilling slide moves laterally to any lock column vertically aligned with the corresponding transverse fixed-distance lock hole, the upper part of the corresponding lock column is movably inserted into the corresponding aligned transverse fixed-distance lock hole, the lower part of the unlocking column and the upper part of the lock column are respectively inserted into the middle part of the corresponding transverse fixed-distance lock hole, the unlocking column and the lock column inserted in the same transverse fixed-distance lock hole are pressed against each other, and after the drilling slide stops at any specified position, the lock column that is not aligned with any transverse fixed-distance lock hole is elastically pressed against the drilling lifting seat;

[0053] The lower part of the drilling transverse sliding chamber longitudinally penetrates the front side and the rear side of the drilling lifting seat and forms a transverse sliding groove respectively. The front side and the rear side of the drilling sliding seat are respectively provided with a transverse sliding block. The two transverse sliding blocks of the drilling sliding seat are respectively slidably installed in the corresponding transverse sliding grooves.

[0054] The transverse sliding block is provided with a plurality of locking column mounting holes at intervals in the transverse direction, at least the upper portions of which penetrate the transverse sliding block;

[0055] The drilling lifting seat is provided with a transverse locking part above the transverse sliding block, and the transverse locking part is provided with a plurality of transverse fixed-distance locking holes at intervals therefrom. A slider installation chamber is provided at the upper part of the transverse locking part corresponding to the area where the transverse fixed-distance locking holes are located, and the upper ends of the transverse fixed-distance locking holes are respectively connected to the corresponding slider installation chambers, and the transverse fixed-distance unlocking block is vertically slidably installed in the slider installation chamber;

[0056] After the drilling slide stops at any designated position, the locking column that is not aligned with any transverse fixed-distance locking hole elastically presses against the bottom surface of the transverse locking portion;

[0057] The upper part of each locking column is provided with a guiding inclined part, and the hole edge of the transverse fixed-distance locking hole is provided with a chamfer;

[0058] A lock post return spring is installed in each of the lock post installation holes for elastically pressing the lock post to move toward the transverse fixed-distance lock hole;

[0059] A slide seat return spring is installed in the drilling transverse sliding chamber and abuts against the drilling slide seat;

[0060] The drilling lifting seat or the drilling sliding seat is equipped with a lateral limit switch electrically connected to the control circuit;

[0061] A fixing plate for limiting the lateral distance unlocking block in the slider installation chamber is fixed on the upper part of the lateral locking portion.

[0062] Further, the frame or the document binding platform is equipped with a rubber pad mechanism, which is provided with a rubber pad driving mechanism installed on the frame, three rubber pad sliders and a conductive rubber pad installed in each rubber pad slider for contacting and cooperating with a corresponding drill, the rubber pad driving mechanism is transmission-connected to the rubber pad slider, and the rubber pad slider is slidably or rotatably installed on the frame or the document binding platform; when drilling, each conductive rubber pad is located below the corresponding drill, and the conductive rubber pad is electrically connected to the control circuit for sending a drilling reset signal to the control circuit when the drill contacts the conductive rubber pad;

[0063] At least one needle body positioning plate is installed on the frame or document binding platform. The needle body positioning plate is installed for horizontal sliding, sliding in an inclined direction, longitudinal sliding or rotation on the frame or document binding platform. The needle body positioning plate is transmission-connected to a rubber pad driving mechanism, a drilling device, an automatic wire feeding device or a motor driving mechanism separately installed on the frame. The needle body positioning plate is provided with a plurality of needle body positioning grooves, and the middle or outer end of each of the wire feeding needles is movably inserted into one of the needle body positioning grooves of the corresponding needle body positioning plate.

[0064] Furthermore, a needle body positioning plate is longitudinally slidably installed at the bottom of the document binding platform at the position of each thread feeding needle, and a plurality of needle body positioning grooves are respectively opened at the front end of the needle body positioning plate, and each of the needle body positioning grooves respectively penetrates the corresponding needle body positioning plate up and down, and the front side of each needle body positioning groove respectively penetrates the front side of the corresponding needle body positioning plate and forms a needle body entrance, and a guiding inclined portion is provided on one side or both sides of the needle body entrance;

[0065] The frame or document binding platform is equipped with a plate body return spring connected to or abutting against the needle body positioning plate;

[0066] The rubber pad driving mechanism comprises a rubber pad driving motor mounted on the frame, and a rubber pad driving plate longitudinally slidably mounted on the frame, the rubber pad driving motor is drivingly connected to the rubber pad driving plate, and the rubber pad driving plate is drivingly connected to the three rubber pad sliders respectively;

[0067] The needle body positioning plate is provided with a plate driving groove extending longitudinally, and the rubber pad driving plate is provided with transmission columns at positions corresponding to each needle body positioning plate, and each transmission column is movably inserted in the plate driving groove of the corresponding needle body positioning plate, and is used to drive the needle body positioning plate to move in the longitudinal direction, so as to realize the movement of the needle body positioning plate driven by the rubber pad driving plate;

[0068] The rubber pad driving plate is provided with a drilling forward stop position, a wire feeding backward stop position and a third stop position along the longitudinal direction, the drilling forward stop position is arranged in front of the wire feeding backward stop position, and the third stop position is arranged in the rear of the wire feeding backward stop position;

[0069] The document binding platform is provided with a binding wire groove extending transversely, and when the rubber pad driving plate moves to the drilling forward stop position, the conductive rubber pad installed on the rubber pad slider moves forward to just below the drill bit, and when the rubber pad driving plate moves to the wire feeding backward stop position, the front side of the rubber pad slider moves backward to the rear side of the binding wire groove;

[0070] The needle body positioning plate has a positioning stop position and an avoidance stop position, and the avoidance stop position is set at the rear side of the positioning stop position; when the rubber pad driving plate moves between the drilling forward stop position and the wire feeding backward stop position, the transmission column slides freely in the plate driving groove, and the needle body positioning plate remains stopped at the positioning stop position;

[0071] When the rubber pad driving plate moves from the wire feeding backward stop position to the third stop position, the transmission column pushes against the plate driving groove to realize the movement of the needle body positioning plate from the positioning stop position to the avoidance stop position. After the needle body positioning plate moves to the avoidance stop position, the upper part of each wire feeding needle respectively withdraws from the corresponding needle body positioning groove, and the upper part of each wire feeding needle is respectively located at the front side of the corresponding needle body positioning plate;

[0072] When the needle body positioning plate stops at the positioning stop position, the upper portion of each of the thread feeding needles is respectively inserted into one of the needle body positioning grooves of the corresponding needle body positioning plate;

[0073] When the needle body positioning plate stops at the avoidance stop position, each thread feeding needle stops at the outer side of the corresponding needle body positioning groove.

[0074] Furthermore, the lifting plate is laterally spaced with three needle units, the needle unit in the middle is fixed to the lifting plate, and the needle units on the left and right sides are laterally slidably installed on the lifting plate, respectively, and the needle unit laterally slidably installed on the lifting plate includes a seat and a thread feeding needle fixed on the upper part of the seat;

[0075] A sliding chamber is respectively provided on the left and right sides of the lifting plate, and a corresponding seat body is slidably installed in one sliding chamber;

[0076] The needle body transverse driving mechanism comprises a transverse driving motor and a transverse transmission mechanism electrically connected to the control circuit, the transverse driving motor is fixed to the lifting plate, the transverse transmission mechanism is installed on the lifting plate, the transverse driving motor is transmission-connected to the transverse transmission mechanism, and the transverse transmission mechanism is transmission-connected to the left and right seats;

[0077] The transverse transmission mechanism includes a cam and a connecting rod. The cam is rotatably installed in the middle of the lifting plate. The transverse drive motor is connected to the cam for driving the cam to rotate. A connecting rod is respectively arranged on the left and right sides of the cam. The left and right sides of the cam are respectively matched with the inner ends of the corresponding connecting rods. The outer ends of the two connecting rods are respectively fixedly connected or transmission connected to the corresponding seat bodies.

[0078] The cam is provided with at least two groups of wheel surface units with the same structure arranged along the circumferential direction, a sliding sleeve is fixed on the left and right sides of the lifting plate respectively, two connecting rods are symmetrically arranged on the left and right sides of the cam, the two connecting rods are respectively slidably inserted in the corresponding sliding sleeves, and the inner ends of the two connecting rods are respectively pressed against the corresponding wheel surface units, and the cam is provided with two groups of wheel surface units with the same structure arranged circumferentially along the circumferential direction to realize symmetrical and synchronous driving of the connecting rods on both sides to move synchronously; the inner end of the connecting rod is provided with a self-locking concave portion, and the wheel surface unit is provided with at least two self-locking convex portions with different driving radiuses, and the self-locking convex portion is pressed against the self-locking concave portion;

[0079] At least one sliding rod is fixed on the lifting plate and / or the two sliding chambers respectively, and the seat body is slidably mounted on the corresponding sliding rod;

[0080] A distance mechanism is arranged between the seat body and the slide rod, between the seat body and the lifting plate, between the connecting rod and the sliding sleeve, between the connecting rod and the lifting plate, or between the cam and the lifting plate.

[0081] The left and right sides of the lifting plate are respectively screwed and fixed with two upper and lower sliding rods, each sliding rod horizontally passes through the corresponding sliding chamber, and the sliding rod sleeve is provided with a spring, the outer end of the spring abuts against the sliding chamber, and the inner end abuts against the seat body;

[0082] The top surface of the seat body is aligned with the top surface of the lifting plate, and a wire feeding needle arranged vertically upward is fixed to the top of the middle part of the lifting plate and the top of the two seat bodies respectively;

[0083] At least one induction switch electrically connected to the control circuit for detecting the lateral position of the seat body is arranged on the connecting rod or the lifting plate.

[0084] Compared with the prior art, the invention has the following advantages: the invention can automatically adjust the positions of the drill and the wire feeding needle in the transverse direction, can adjust the drilling hole spacing, and the file binding machine can adjust the binding hole spacing. BRIEF DESCRIPTION OF THE DRAWINGS

[0085] Figure 1 It is a structural schematic diagram of the file binding machine of the present invention.

[0086] Figure 2 It is a front view of the present invention.

[0087] Figure 3 yes Figure 2 A partial enlarged view of point A in the middle.

[0088] Figure 4 It is a schematic structural diagram of the drilling device of the present invention.

[0089] Figure 5 It is an exploded schematic diagram of the drilling device of the present invention.

[0090] Figure 6 It is a structural schematic diagram of the hole distance adjusting cam of the present invention.

[0091] Figure 7 It is a structural schematic diagram of the automatic wire feeding device of the present invention.

[0092] Figure 8 It is a schematic diagram of the structure of the automatic wire feeding device of the present invention after the transverse driving motor and the guard plate are hidden.

[0093] Fig. 9 yes Figure 8 Front view of .

[0094] Fig.10 It is a partial structural schematic diagram of the file binding machine of the present invention.

[0095] Fig.11 yes Fig.10 A partial enlarged view of point B in the middle.

[0096] Fig.12 The present invention is a schematic structural diagram of the file binding machine after the file binding platform is cut open.

[0097] Fig.13 yes Fig.12 A partial enlarged view of point C in the middle.

[0098] Markings in the figure:

[0099] 1 frame 11 document binding platform 12 guide column 13 binding wire groove 14 conductive rubber pad 15 wire feeding guide column.

[0100] 2 drilling device 20 slide return spring 21 drill bit 22 drilling lifting motor 23 drilling lifting seat 230 circular ring groove 231 motor mounting position 232 drilling transverse sliding chamber 233 hole spacing adjustment cam 234 push rod 235 ratchet plate 2350 circular convex ring 236 cam shaft 237 ratchet 238 one-way ratchet portion 239 one-way ratchet hole.

[0101] 24 drilling motor 25 drilling slide 251 locking column 252 locking column mounting hole 253 positioning transmission recess 254 transverse sliding block 255 transverse locking portion 256 fixing sheet 257 slider mounting chamber.

[0102] 26 unlocking rod 27 laterally spaced unlocking block 270 unlocking column 28 laterally spaced locking hole 29 cam return spring.

[0103] 3 Automatic wire feeding device 30 Needle unit 31 Wire feeding needle 32 Base body 33 Wire feeding fork 34 Lifting motor 35 Lifting plate 36 Sliding chamber 37 Connecting part 38 Induction switch

[0104] 41 lateral drive motor 42 cam 43 connecting rod 44 sliding sleeve 45 sliding rod 46 cam shaft 47 guard plate 48 spring 49 self-locking protrusion.

[0105] 51 rack, 52 gear.

[0106] 6 needle body positioning plate 61 needle body positioning groove 62 plate body driving groove.

[0107] 7 rubber pad slider 71 rubber pad driving plate 73 rubber pad driving motor 74 rubber pad driving rack 75 plate body return spring 76 transmission column 77 sliding cover. DETAILED DESCRIPTION

[0108] The present invention is mainly applicable to file binding machines with more than two holes, and is particularly applicable to three-hole thread-bound file binding machines that simultaneously drill three binding through holes in the binding documents and simultaneously insert file binding lines into each binding through hole. Of course, the present invention is also applicable to five-hole thread-bound file binding machines.

[0109] A file binding machine with a drilling spacing adjustment mechanism, Figures 1 to 13 As shown, it includes a frame 1, a document binding platform 11, a drilling device 2, an automatic wire feeding device 3 and a control circuit. The document binding platform 11 is installed in the middle of the frame 1 and is used to place or fix binding documents. A drilling device 2 that moves up and down to drill holes is arranged above or below the document binding platform 11, and is used to drill binding holes in the bound documents. An automatic wire feeding device 3 is arranged above or below the document binding platform 11. The control circuit is used to control the drilling device 2 to automatically drill holes and the automatic wire feeding device 3 to automatically feed wires, and at the same time control the drilling device 2 and the automatic wire feeding device 3 to work together to realize automatic completion of the file binding operation.

[0110] The drilling device 2 is provided with a drilling lifting mechanism, a drilling lifting seat 23, a drill transverse driving mechanism and at least two drilling units arranged at intervals in the transverse direction on the drilling lifting seat 23. The drilling lifting mechanism is installed on the frame 1 or the document binding platform 11. The drilling lifting mechanism is connected to the drilling lifting seat 23 in a transmission manner, wherein at least one drilling unit is installed in a transverse sliding manner on the drilling lifting seat 23. The drilling lifting seat 23 is installed in a sliding manner on the frame 1. At least one drill transverse driving mechanism is installed on the frame 1 and / or the drilling lifting seat 23. The drill transverse driving mechanism is connected to the transversely sliding drilling unit. One drilling unit is provided with at least one drilling motor 24 and a drill 21 connected to the drilling motor 24 in a transmission manner. The automatic wire feeding device 3 is provided with a plurality of drilling units at intervals in the transverse direction. The elements correspond to each other one by one, namely, a needle body unit 30, a needle body transverse driving mechanism, a wire feeding lifting mechanism and a lifting plate 35, the wire feeding lifting mechanism includes a lifting motor 34 electrically connected to the control circuit and a wire feeding lifting transmission mechanism, the wire feeding lifting mechanism is installed on the frame 1, and the wire feeding lifting mechanism can also be installed on the document binding platform 11, the wire feeding lifting mechanism is connected to the lifting plate 35 in a transmission manner, wherein at least one needle body unit 30 is installed in a transverse sliding manner on the lifting plate 35, the needle body transverse driving mechanism is installed on the frame 1 or the lifting plate 35, the needle body transverse driving mechanism is connected to the transversely slidably installed needle body unit 30, and a needle body unit 30 is provided with a vertically arranged wire feeding needle 31; each wire feeding needle 31 is longitudinally aligned or vertically aligned with a corresponding drill 21.

[0111] The drilling lifting mechanism includes a drilling lifting motor 22 and a drilling lifting transmission mechanism. The drilling lifting motor 22 is electrically connected to the control circuit. The drilling lifting motor 22 is transmission-connected to the drilling lifting transmission mechanism. The drilling lifting transmission mechanism is transmission-connected to the drilling lifting seat 23. The drilling lifting seat 23 is laterally spaced with a plurality of drilling units, wherein at least two drilling units are laterally slidably mounted on the drilling lifting seat 23, and at least one drilling unit is fixedly mounted on the drilling lifting seat 23. Of course, all drilling units can also be laterally slidably mounted on the drilling lifting seat 23. The drill transverse driving mechanism is mounted on the drilling lifting seat 23. The drill transverse driving mechanism can also be mounted on the frame 1. Each drilling unit that is laterally slidably mounted is transmission-connected to the same drill transverse driving mechanism or is respectively transmission-connected to the corresponding drill transverse driving mechanism, so as to simultaneously drive each drilling unit to move laterally or separately drive each drilling unit to move laterally. At the same time, the transverse position of each needle body can be automatically adjusted and each needle body can be matched with the corresponding binding hole distance, so that the file binding machine can adjust the binding hole distance.

[0112] The drilling lifting transmission mechanism may be a gear-rack transmission mechanism composed of a gear 52 and a rack 51 or a screw transmission mechanism composed of a screw and a nut, etc., as long as it can drive the drilling lifting seat 23 to rise and fall.

[0113] In a preferred embodiment, the drilling device 2 includes a drilling lifting motor 22 fixedly mounted on the frame 1, a drilling lifting seat 23 slidably mounted in the vertical direction, a drill bit transverse driving mechanism mounted on the drilling lifting seat 23 and three drilling units laterally spaced apart on the drilling lifting seat 23, the drilling lifting motor 22 is transmission-connected to the drilling lifting seat 23, the drilling unit in the middle is fixed to the drilling lifting seat 23, the drilling units on the left and right sides are respectively transversely slidably mounted on the drilling lifting seat 23, and the drilling units on the left and right sides are respectively transmission-connected to the drill bit transverse driving mechanism; each drilling unit is provided with a drill bit 21 which is hollow in the middle and configured as a chip removal through hole and has a lower wall configured as a circular blade, which is used for cutting chips and binding documents and forming a binding through hole.

[0114] The automatic wire feeding device 3 includes a lifting motor 34, a wire feeding lifting transmission mechanism, a lifting plate 35, a needle body transverse driving mechanism and a plurality of needle body units 30 arranged transversely at intervals. The lifting motor 34 is electrically connected to the control circuit, and the lifting motor 34 is installed on the frame 1. The lifting plate 35 is installed on the frame 1 for sliding up and down. The lifting motor 34 is connected to the wire feeding lifting transmission mechanism for transmission, and the wire feeding lifting transmission mechanism is connected to the lifting plate 35 for transmission; at least two needle body units 30 are installed transversely for sliding movement on the lifting plate 35, and at least one needle body unit 30 is fixedly installed on the lifting plate 35. Of course, all needle body units 30 can also be installed transversely for sliding movement on the lifting plate 35. Each needle body unit 30 is provided with a vertically arranged wire feeding needle 31. The needle body transverse driving mechanism is installed on the lifting plate 35. Of course, the needle body transverse driving mechanism can also be installed on the frame 1. Each needle body unit 30 installed for transverse sliding movement is connected to the same needle body transverse driving mechanism or is respectively connected to the corresponding needle body transverse driving mechanism for transmission, so as to realize simultaneous driving of each needle body unit 30 for transverse movement or respectively driving each drilling unit for transverse movement.

[0115] The wire feeding lifting transmission mechanism can be a gear-rack transmission mechanism composed of a gear 52 and a rack 51 or a screw transmission mechanism composed of a screw and a nut, as long as it can drive the lifting plate 35 to rise and fall.

[0116] In a preferred embodiment, the automatic wire feeding device 3 includes a lifting plate 35, a needle body transverse driving mechanism installed on the lifting plate 35 and three needle body units 30 arranged at laterally intervals on the lifting plate 35, the needle body unit 30 located in the middle is fixed to the lifting plate 35, the needle body units 30 located on the left and right sides are respectively installed on the lifting plate 35 for transverse sliding, and the needle body units 30 on the left and right sides are respectively connected to the needle body transverse driving mechanism for transmission; each needle body unit 30 is provided with a vertically arranged wire feeding needle 31, the wire feeding needle 31 has a rod body extending in the vertical direction, and the outer end of the wire feeding needle 31 is provided with a wire feeding hook, a wire feeding groove or a wire feeding fork 33 for hooking, threading or feeding the wire; the three drills 21 are vertically aligned with the three wire feeding needles 31 respectively.

[0117] Preferably, each needle unit 30 disposed on the lifting plate 35 is installed for transverse sliding. For example, three needle units 30 are installed for transverse sliding at intervals on the upper part of the lifting plate 35. Each needle unit 30 is respectively connected to a corresponding needle transverse driving mechanism for individually adjusting the transverse position of each thread feeding needle 31.

[0118] In a preferred embodiment, the drilling device 2 is provided with a drill transverse driving mechanism and three drilling units, a drilling unit located in the middle is fixed on the drilling lifting seat 23, and two drilling units located on the left and right sides are respectively slidably installed on the left and right sides of the upper part of the drilling lifting seat 23, and the two drilling units located on the left and right sides are respectively connected to the corresponding drill transverse driving mechanism; a needle body positioning plate 6 is respectively installed on the left and right sides of the document binding platform 11, and two thread feeding needles 31 located on the left and right sides are respectively movably inserted into the corresponding needle body positioning grooves 61 of the two needle body positioning plates 6. Correspondingly, the middle drilling unit and the drill 21 are fixed, and the left and right drilling units are symmetrically arranged and can adjust their transverse positions synchronously, or the left and right drilling units can adjust their transverse positions independently.

[0119] Specifically, the drilling device 2 is arranged above the document binding platform 11, and the automatic wire feeding device 3 is arranged below the document binding platform 11, and the drilling device 2 and the automatic wire feeding device 3 are arranged opposite to each other up and down;

[0120] The document binding platform 11 is provided with a laterally extending binding wire groove 13 for passing or placing the file binding wire. The binding wire groove 13 is provided with a wire feeding slot hole that passes through the document binding platform 11 vertically at least at the position corresponding to each wire feeding needle 31. When the wire feeding needle 31 is in the initial position, the upper end of each wire feeding needle 31 is movably inserted into the corresponding wire feeding slot hole; a vertically arranged guide column 12 is respectively provided on the left and right sides of the frame 1, and the guide column 12 is fixed above the document binding platform 11. The left and right sides of the drilling lifting seat 23 are respectively slidably installed on the corresponding guide column 12 to limit the vertical upward and downward movement of the drilling lifting seat 23 in the vertical direction, so that the drilling operation is more stable and reliable The drilling unit fixed on the drilling lifting seat 23 includes a drilling motor 24 electrically connected to the control circuit and fixedly installed on the upper part of the drilling lifting seat 23, and a drill 21; the drilling unit laterally slidably installed on the drilling lifting seat 23 includes a drilling slide 25 laterally slidably installed on the upper part of the drilling lifting seat 23, a drilling motor 24 electrically connected to the control circuit and fixed on the drilling slide 25, and a drill 21; each drilling motor 24 is provided with a drilling transmission shaft, and each drill 21 is respectively transmission-connected or fixedly installed on the drilling transmission shaft of the drilling motor 24 belonging to the same drilling unit; the drill 21 is driven to rotate by the drilling motor 24 to realize the drilling function.

[0121] In a preferred embodiment, the two drilling units on the left and right sides are symmetrically arranged, and a drill transverse driving mechanism is respectively installed on the front side and the rear side of the middle part of the drilling lifting seat 23, and the front side and the rear side of the drilling slide 25 of the two drilling units on the left and right sides are respectively connected to the corresponding drill transverse driving mechanism. Of course, a drill transverse driving mechanism can also be installed only on the front side or the rear side of the middle part of the drilling lifting seat 23.

[0122] The automatic wire feeding device 3 is provided with a lifting plate 35, and a vertically arranged wire feeding guide column 15 is respectively arranged on the left and right sides of the frame. The wire feeding guide column 15 is fixed under the document binding platform 11, and the left and right sides of the lifting plate 35 are respectively slidably installed on the corresponding wire feeding guide column 15 to guide and limit the up and down movement of the lifting plate 35.

[0123] The needle body unit 30 fixed to the lifting plate 35 only includes a wire feeding needle 31 whose lower part is fixed to the upper part of the lifting plate 35; the needle body unit 30 installed on the lifting plate 35 for transverse sliding only includes a seat body 32 installed on the upper part of the lifting plate 35 for transverse sliding and a wire feeding needle 31 fixed to the upper part of the seat body 32; the two needle body units 30 located on the left and right sides are symmetrically arranged, and a needle body transverse driving mechanism is installed on the front and rear sides of the middle part of the lifting plate 35, and the seat bodies 32 of the two needle body units 30 located on the left and right sides are respectively connected to the needle body transverse driving mechanism for transmission.

[0124] The frame 1 or the document binding platform 11 is equipped with a rubber pad mechanism, which is provided with a rubber pad driving mechanism installed on the frame 1, three rubber pad sliders 7 and a conductive rubber pad 14 installed in each rubber pad slider 7 for contacting and cooperating with the drill 21. The rubber pad driving mechanism is connected to the rubber pad slider 7, and the rubber pad slider 7 is slidably installed or rotatably installed on the frame 1 or the document binding platform 11; when drilling, each conductive rubber pad 14 moves forward so that each conductive rubber pad 14 is respectively located under the corresponding drill 21. Of course, a needle body transverse driving mechanism can also be installed on the front side or the rear side of the middle part of the lifting plate 35. Specifically, each rubber pad slider 7 is equipped with a conductive rubber pad 14, and three conductive rubber pads 14 arranged at intervals in the horizontal direction are respectively in contact with the corresponding three drill bits 21; the rubber pad driving mechanism includes a rubber pad driving motor 73 installed on the frame 1, and a rubber pad driving plate 71 longitudinally slidably installed on the frame 1, and the rubber pad driving motor 73 is connected to the rubber pad driving plate 71 in a transmission manner. Specifically, the rubber pad driving plate 71 is fixed with a rubber pad driving rack 74 arranged longitudinally, and the rubber pad driving motor 73 is connected to the rubber pad driving rack 74 in a transmission manner to realize driving the rubber pad driving plate 71 to move forward and backward. The rubber pad driving plate 71 is respectively connected to the three rubber pad sliders 7 in a transmission manner to realize driving the three rubber pad sliders 7 to move forward and backward synchronously at the same time. A conductive rubber pad 14 is correspondingly arranged under a corresponding drill bit 21; the needle body positioning plate 6 is provided with a longitudinally extending plate driving groove 62, and the rubber pad driving plate 71 is respectively provided with a transmission column 76 corresponding to the position of each needle body positioning plate 6, and each transmission column 76 is respectively movably inserted in the plate driving groove 62 of the corresponding needle body positioning plate 6, and is used to drive the needle body positioning plate 6 to move along the longitudinal direction.

[0125] The lifting plate 35 is provided with a limited sliding mechanism, and the seat 32 of the needle unit 30 which is installed to slide horizontally is fixed or slidably installed on the limited sliding mechanism. In a preferred embodiment, a limited sliding mechanism is respectively provided on the left and right sides of the lifting plate 35, and three needle units 30 are arranged horizontally and spaced apart on the lifting plate 35; the needle body or seat 32 of the needle unit 30 located in the middle is fixed on the lifting plate 35; for example, a needle nail body mounting seat, a needle body mounting hole or a needle body mounting portion is provided on the upper part of the lifting plate 35, and the lower part of the needle body of the needle unit 30 located in the middle is directly fixed on the upper part of the lifting plate 35, directly fixed on the nail body mounting seat of the lifting plate 35, directly fixed on the needle body mounting hole or directly fixed on the needle body mounting portion. The seats 32 of the needle units 30 on the left and right sides are respectively installed on the corresponding limit sliding mechanisms, and the needle transverse driving mechanism is respectively connected to the two needle units 30 on the left and right sides, and the needle transverse driving mechanism is respectively connected to the seats 32 of the two needle units 30 on the left and right sides, and the needle transverse driving mechanism is respectively connected to the limit sliding mechanisms on the left and right sides to drive or limit the corresponding seats 32 to slide transversely; the needle transverse driving mechanism includes a transverse driving motor 41 and a transverse transmission mechanism electrically connected to the control circuit, the transverse driving motor 41 is fixed to the lifting plate 35, the transverse transmission mechanism is installed on the lifting plate 35, the transverse driving motor 41 is connected to the transverse transmission mechanism, and the transverse transmission mechanism is connected to the seat 32 or the limit sliding mechanism. As long as the two needle units 30 on the left and right sides can be driven to move transversely accordingly, it will be sufficient.

[0126] Specifically, a sliding chamber 36 is provided on the left and right sides of the lifting plate 35, and a seat body 32 is slidably installed in a sliding chamber 36; the transverse transmission mechanism includes a cam 42 and a connecting rod 43, the cam 42 is rotatably installed in the middle of the lifting plate 35, and the transverse driving motor 41 is connected to the cam 42 for driving the cam 42 to rotate, and a connecting rod 43 is provided on the left and right sides of the cam 42, and the left and right sides of the cam 42 are respectively matched with the inner ends of the corresponding connecting rods 43 for transmission, and the outer ends of the two connecting rods 43 are respectively fixedly connected or connected to the corresponding seat bodies 32. The cam 42 simultaneously drives the two seat bodies 32 on the left and right sides to move synchronously horizontally, so as to realize the simultaneous and synchronous adjustment of the positions of the two left and right wire feeding needles 31, and the position adjustment of the wire feeding needles 31 is simpler, more stable and faster.

[0127] The two needle units 30 located on the left and right sides of the lifting plate 35 are symmetrically arranged, the two transverse transmission mechanisms are symmetrically arranged on the left and right sides of the lifting plate 35, and the two sliding chambers 36 are symmetrically arranged on the left and right sides of the lifting plate 35; the cam 42 has at least two groups of wheel surface units with the same structure arranged along the circumferential direction; the left and right sides of the lifting plate 35 are respectively fixed with a sliding sleeve 44, and two connecting rods 43 are symmetrically arranged on the left and right sides of the cam 42, and the two connecting rods 43 are respectively slidably inserted in the corresponding sliding sleeves 44, and the inner ends of the two connecting rods 43 are respectively pressed against the corresponding wheel surface units to achieve driving the two connecting rods 43 to move synchronously the same distance when the cam 42 rotates. The wheel surface unit can be designed as a continuously distributed cam 42 surface with an arc-shaped curved surface to achieve stepless and continuous adjustment of the lateral position of the corresponding thread feeding needle 31, and the wheel surface unit can be designed as a cam 42 surface composed of multiple driving parts with different driving radiuses to achieve fixed-distance adjustment of the lateral position of the corresponding thread feeding needle 31.

[0128] At least one slide bar 45 is fixed to the lifting plate 35 or the two sliding chambers 36, and the seat body 32 is slidably mounted on the corresponding slide bar 45; a distance mechanism is provided between the seat body 32 and the slide bar 45, between the seat body 32 and the lifting plate 35, between the connecting rod 43 and the sliding sleeve 44, between the connecting rod 43 and the lifting plate 35, or between the cam 42 and the lifting plate 35. This can ensure the stability of the left and right seat bodies 32 when moving horizontally, and the seat body 32 of the hole distance adjustment device moves smoothly to avoid jamming, while improving the adjustment accuracy and avoiding the needle collision phenomenon caused by the inaccurate position of the thread feeding needle 31.

[0129] A camshaft 46 is rotatably installed in the middle of the side of the lifting plate 35, and the cam 42 is fixed to the camshaft 46. A guard plate 47 is fixed to the side of the lifting plate 35 where the cam 42 is installed, and the guard plate 47 is adjacent to or against the cam 42 or the camshaft 46. The transverse drive motor 41 is fixed to the guard plate 47, and the transverse drive motor 41 is connected to the camshaft 46 to drive the cam 42 to rotate; the needle body transverse drive mechanism including components such as the transverse drive motor 41 and the connecting rod 43 is installed on the lifting plate 35 and moves up and down synchronously with the lifting plate 35, which is beneficial to improve the position adjustment accuracy of the needle body unit 30, make the structure of the needle body transverse drive mechanism simpler, and make the control of the transverse drive needle body unit 30 movement simpler and easier, and the needle body transverse drive mechanism is more stable and reliable.

[0130] The sliding chamber 36 is a slot body opened in the lifting plate 35, in which a seat body 32 is slidably installed. The left and right sides of the lifting plate 35 are respectively screwed with upper and lower slide bars 45, each of which passes through the corresponding slot body horizontally. The slide bar 45 is sleeved with a spring 48, and the outer end of the spring 48 abuts against the outer side of the slot body, and the inner end abuts against the outer side of the seat body 32; so that the seat body 32 is easier and more stable when moving horizontally, and the seat body 32 is prevented from getting stuck during the movement. The top surface of the seat body 32 is aligned with the top surface of the lifting plate 35, and a wire feeding needle 31 arranged vertically upward is fixed to the top of the middle part of the lifting plate 35 and the top of the two seats 32, so that the installation height and top height of each wire feeding needle 31 are consistent, so that it is suitable for the existing file binding machine control circuit and increases versatility. A connecting portion 37 extends from the lower portion of the seat body 32 toward the side where the cam 42 is located, and the connecting portion 37 is fixedly connected to the outer end portion of the corresponding connecting rod 43; at least one induction switch 38 electrically connected to the control circuit for detecting the lateral position of the seat body 32 is provided on the connecting rod 43 or the lifting plate 35; the control circuit controls the lateral drive motor 41 according to the signal of the induction switch 38, so that the seat body 32 stops at the corresponding designated position.

[0131] The cam 42 has two groups of wheel surface units with the same structure arranged circumferentially in the circumferential direction to realize symmetrical and synchronous driving of the connecting rods 43 on both sides to move synchronously; the inner end of the connecting rod 43 is provided with a self-locking recess, and the wheel surface unit is provided with at least two self-locking protrusions 49 with different driving radius, and the self-locking protrusions 49 abut against the self-locking recess. The seat body 32 can accurately stay at the set position. This design is suitable for the situation where each thread feeding needle 31 is quickly adjusted to a specified spacing. For example, for a three-hole file binding machine with three thread feeding needles 31 and at least two specified binding hole spacings preset, the needle body lateral driving mechanism is controlled by the control circuit and the left and right needle body units 30 are driven to move quickly to the specified positions corresponding to the corresponding binding hole spacings, respectively, to realize the fixed-distance rapid adjustment of the thread feeding needle 31, with high adjustment accuracy and simple and convenient adjustment.

[0132] A drilling limit switch electrically connected to the control circuit and inductively matched with the drilling device 2 is installed on the frame 1 or the document binding platform 11, which is used to detect and control the limit position of the drilling device 2 and send a drilling device limit position signal to the control circuit; after the control circuit receives the drilling device limit position signal, the control circuit controls the drilling device 2 to stop or move in the corresponding direction according to the set program. A wire feeding limit switch electrically connected to the control circuit is installed on the frame 1, and the wire feeding limit switch is inductively matched or triggered with the lifting plate 35 and sends a lifting plate 35 limit position signal to the control circuit, which is used to detect and control the limit position of the lifting plate 35. After the control circuit receives the lifting plate 35 limit position signal, the lifting plate 35 is controlled to stop or move in the corresponding direction. For example, after the lifting plate 35 moves upward to the upper limit position and triggers the corresponding wire feeding limit switch, the control circuit controls the lifting plate 35 to stop moving upward, and then moves downward to reset. A conductive rubber pad 14 that slides back and forth and is electrically connected to the control circuit is provided on the frame 1 or the document binding platform 11. When drilling, the conductive rubber pad 14 contacts and cooperates with the drill bit 21 and sends a drilling device reset signal to the control circuit. After the control circuit receives the drilling device reset signal, it controls the drilling device 2 to move upward and reset.

[0133] The drilling unit installed on the drilling lifting seat 23 for transverse sliding includes a drilling slide 25 and a drilling motor 24. The drilling lifting seat 23 is provided with at least one drilling transverse sliding chamber 232. The drilling slide 25 is installed for transverse sliding in the corresponding drilling transverse sliding chamber 232 for transverse sliding. The drilling motor 24 is fixedly installed on the drilling slide 25 belonging to the same drilling unit, and the drilling slide 25 is connected to the drill bit transverse driving mechanism for transmission. Specifically, a motor mounting position 231 is provided in the middle of the drilling lifting seat 23, and a drilling motor 24 is fixedly installed on the motor mounting position 231; a drilling transverse sliding chamber 232 is provided on the left and right sides of the drilling lifting seat 23, respectively, and a drilling slide 25 is installed for transverse sliding in the two drilling transverse sliding chambers 232, respectively, and a drilling motor 24 belonging to the same drilling unit is fixedly installed on the two drilling slides 25; one drilling motor 24 is correspondingly connected to one drill bit 21 for transmission; the drill bit transverse driving mechanism includes a push rod. The rod 234 and the hole distance adjusting cam 233 rotatably mounted in the middle of the drilling lifting seat 23, the push rod 234 is fixedly mounted or slidably mounted on the frame 1, the hole distance adjusting cam 233 is respectively connected to the left and right drilling slide seats 25, and the push rod 234 cooperates with the hole distance adjusting cam 233 in transmission when adjusting the binding hole distance. The hole distance adjusting cam 233 is separated from the push rod 234 during the drilling or wire feeding process. The hole distance adjusting cam 233 will not be pushed by the push rod 234 during the drilling or wire feeding process, and the hole distance adjusting cam 233 will remain stationary.

[0134] Of course, the drill bit transverse driving mechanism can also use a gear-rack driving mechanism composed of transmission-matched gears and racks, or a screw driving mechanism composed of transmission-matched screws and nuts, etc., as long as it can drive the transversely slidably installed drilling unit to move transversely, the transversely slidably installed drilling unit can be driven to move continuously by the transverse driving mechanism of the drill bit, and the transversely slidably installed drilling unit can be stopped at any position, which is called continuous adjustment of the binding hole distance; of course, multiple stop positions of the transversely slidably installed drilling unit can also be determined by multiple limit switches or position sensors, so that the transversely slidably installed drilling unit can stop at each stop position in turn, which is called fixed-distance adjustment of the binding hole distance.

[0135] The drilling lifting seat 23 is provided with an initial drilling stop position, a lower drilling stop position and a hole spacing adjustment stop position. The hole spacing adjustment stop position is arranged above the initial drilling stop position, and the initial drilling stop position is arranged above the lower drilling stop position; the drilling device 2 is provided with a drilling state and a binding hole spacing adjustment state. When the drilling device 2 is in the drilling state, the drilling lifting seat 23 moves between the initial drilling stop position downward and the lower drilling stop position; when the drilling device 2 is in the binding hole spacing adjustment state, the drilling lifting seat 23 moves between the initial drilling stop position upward and the hole spacing adjustment stop position. When the drilling device 2 is in the binding hole spacing adjustment state, the drilling lifting seat 23 moves from the initial drilling stop position to the upper position of the hole spacing adjustment. In the process of moving to the hole spacing adjustment stop position, the drilling lifting seat 23 moves upward relative to the push rod 234, and the push rod 234 pushes the hole spacing adjustment cam 233 to drive the hole spacing adjustment cam 233 to rotate and laterally push the left and right drilling slides 25 to move laterally through the hole spacing adjustment cam 233; a transverse positioning locking mechanism is respectively provided on the front and rear sides of the drilling slide 25. Of course, a transverse positioning locking mechanism can also be provided only on the front or rear side of the drilling slide 25 to lock each drilling slide 25 in the transverse direction and keep it stationary, thereby ensuring the reliability and stability of the drilling position during drilling, ensuring the hole quality, and ensuring the position accuracy of the drilling position.

[0136] Preferably, the hole pitch adjustment cam 233 is arranged with at least two groups of wheel surface units with the same structure along the circumferential direction, and the inner ends of the left and right drilling slides 25 are respectively provided with a positioning transmission recess 253, and the wheel surface unit is provided with at least two driving protrusions 2331 with different driving radiuses, and the driving protrusions 2331 abut against the positioning transmission recess 253 to realize symmetrical and synchronous driving of the left and right drilling slides 25 to move horizontally synchronously; the push rod 234 is vertically arranged, the upper part of the push rod 234 is fixed to the frame 1, and the lower part of the push rod 234 forms a pushing part, and the front of the hole pitch adjustment cam 233 is fixedly connected or transmission-connected to a one-way transmission ratchet 237, During the movement of the drilling lifting seat 23 from the initial stop position of drilling toward the stop position for adjusting the hole spacing, the pushing part cooperates with the ratchet 237 in transmission; each drilling slide 25 is respectively provided with at least two lock column mounting holes 252 arranged at a transverse interval, and a lock column 251 is vertically slidably installed in each lock column mounting hole 252, and the area of ​​the drilling lifting seat 23 corresponding to the lock column 251 is laterally provided with a plurality of transverse spacing lock holes 28 arranged at a transverse interval. After the drilling slide 25 stops at any specified position, at least one lock column 251 in each drilling slide 25 is movably inserted into the corresponding transverse spacing lock hole 28 to lock the position of the drilling slide 25 in the transverse direction.

[0137] Preferably, the transverse positioning lock mechanism includes a plurality of transverse distance locking holes 28 provided in the drilling lifting seat 23 and at least one locking column 251 slidably mounted on the drilling slide 25 and engaged with the corresponding locking column 251. After the drilling slide 25 stops at any designated position, at least one locking column 251 in each drilling slide 25 is movably inserted into the corresponding transverse distance locking hole 28 to lock the transverse position of the drilling slide 25. Of course, the engaged locking column 251 and the transverse distance locking hole 28 may also be arranged horizontally, or the locking column 251 may be movably inserted into the corresponding transverse distance locking hole 28 along the longitudinal direction or may be movably inserted into the corresponding transverse distance locking hole 28 along the transverse direction.

[0138] Preferably, the transverse positioning lock mechanism includes three or more transverse fixed-distance lock holes 28, a plurality of lock columns 251, an unlocking rod 26 and a transverse fixed-distance unlocking block 27. The lower parts of the left and right drilling transverse sliding chambers 232 respectively penetrate the front and rear sides of the drilling lifting seat 23 longitudinally and form a transverse sliding groove respectively. The front and rear sides of the two drilling slides 25 are respectively provided with a transverse sliding block 254, and the transverse sliding blocks 254 of the two drilling slides 25 are respectively slidably installed in the corresponding transverse sliding grooves; the transverse sliding block 254 is provided with three or more lock column mounting holes 252 at intervals in the transverse direction; the drilling lifting seat 23 is provided with a transverse locking portion 255 above the transverse sliding block 254, and the transverse locking portion 255 is provided with a plurality of transverse fixed-distance lock holes 28 at intervals in the transverse direction, and an unlocking column 270 is movably inserted in each transverse fixed-distance lock hole 28; the transverse A slider installation chamber 257 is provided at the upper part of the locking portion 255 in the area where the transverse fixed-distance lock hole 28 is located. The upper part of the lock column installation hole 252 passes through the transverse sliding block 254. The upper ends of each transverse fixed-distance lock hole 28 are respectively connected to the corresponding slider installation chamber 257. The transverse fixed-distance unlocking block 27 is vertically slidably installed in the slider installation chamber 257. A plurality of unlocking columns 270 are horizontally spaced at the lower part of the transverse fixed-distance unlocking block 27. The number of unlocking columns 270 is the same as the transverse fixed-distance lock hole 28. The lower part of the unlocking column 270 is inserted into the corresponding transverse fixed-distance lock hole 28, and ensures that an unlocking column 270 is vertically and movably inserted in each transverse fixed-distance lock hole 28 to achieve unlocking. A fixing plate 256 is fixed to the upper part of the transverse locking portion 255, which is used to restrict the transverse fixed-distance unlocking block 27 in the slider installation chamber 257 and restrict it from sliding vertically. When the drilling slide 25 moves laterally to any lock column 251 vertically aligned with the corresponding transverse spacing lock hole 28, the upper end of the corresponding lock column 251 is movably inserted in the corresponding aligned transverse spacing lock hole 28, the lower part of the unlocking column 270 and the upper part of the lock column 251 are respectively inserted into the middle part of the corresponding transverse spacing lock hole 28, and the unlocking column 270 and the lock column 251 inserted in the same transverse spacing lock hole 28 are abutted and matched; after the drilling slide 25 stops at any specified position, the lock column 251 that is not aligned with any transverse spacing lock hole 28 elastically abuts against the transverse locking portion 255. When the drilling slide 25 moves to the rightmost side, the leftmost locking column 251 is movably inserted into a transverse spacing locking hole 28 on the rightmost side. When the drilling slide 25 moves to the leftmost side, the rightmost locking column 251 is movably inserted into a transverse spacing locking hole 28 on the leftmost side. Therefore, the number of positions for adjusting the spacing of the drilling slide 25 in the transverse direction is greater than the number of locking columns 251 or the number of transverse spacing locking holes 28, so as to provide more available hole spacing adjustment numbers in a smaller space. Preferably, after the drilling slide 25 stops at any specified position, at least two locking columns 251 are movably inserted into the corresponding transverse spacing locking holes 28, so as to ensure that the drilling slide 25 is firmly locked to the drilling lifting seat 23, thereby ensuring the stability of the drilling device 2 when it moves up and down.

[0139] Each locking column installation hole 252 is provided with a locking column reset spring for elastically pressing the locking column 251 to move toward the transverse fixed distance locking hole 28. During the movement of the drilling slide 25, each locking column 251 will automatically insert into the corresponding transverse fixed distance locking hole 28 under the action of the locking column reset spring, and automatically lock. When the locking column 251 is aligned with any transverse fixed distance locking hole 28, it will automatically insert into the corresponding transverse fixed distance locking hole 28. The unlocking rod 26 is vertically slidably installed on the frame 1 or the drilling lifting seat 23, and the lower end of the unlocking rod 26 is pressed against the upper part of the transverse fixed distance unlocking block 27. The unlocking rod 26 is sleeved with an unlocking rod reset spring for elastically pressing the unlocking rod 26 to move toward the side where the transverse fixed distance unlocking block 27 is located, and a downward elastic force is applied to the unlocking rod 26 to avoid hard collision, reduce noise, and improve the reliability and stability of the unlocking action.

[0140] Specifically, the transverse positioning lock mechanism includes a plurality of transverse spacing lock holes 28 vertically arranged on the drilling lifting seat 23, a plurality of locking columns 251 slidably mounted vertically on the drilling slide 25, a transverse spacing unlocking block 27 and an unlocking rod 26. The unlocking rod 26 is installed on the frame 1 or the drilling lifting seat 23. The unlocking rod 26 is transmission-connected to the corresponding transverse spacing unlocking block 27. The unlocking rod 26 can also be fixedly connected to the corresponding transverse spacing unlocking block 27. Preferably, the lower end of the unlocking rod 26 abuts against the upper part of the transverse spacing unlocking block 27. The unlocking rod 26 is provided with an unlocking rod return spring for elastically abutting the unlocking rod 26 to move toward the side where the transverse spacing unlocking block 27 is located. The transverse spacing unlocking block 27 is in transmission cooperation with the locking column 251, and is used to make each locking column 251 withdraw from the corresponding transverse spacing locking hole 28 respectively when unlocking; after the drilling slide 25 stops at any specified position, at least two locking columns 251 in each drilling slide 25 are movably inserted into the corresponding two transverse spacing locking holes 28, and after the drilling slide 25 stops at any specified position, the locking column 251 that is not aligned with any transverse spacing locking hole 28 elastically presses against the drilling lifting seat 23, ensuring that the drilling slide 25 is firmly locked on the drilling lifting seat 23, ensuring the stability of the drilling device 2 when moving up and down.

[0141] The lower part of the transverse spacing unlocking block 27 is laterally spaced with unlocking columns 270 corresponding to each transverse spacing lock hole 28, and the lower part of each unlocking column 270 is respectively inserted in the corresponding transverse spacing lock hole 28, and an unlocking column 270 is movably inserted in each transverse spacing lock hole 28; when the drilling slide 25 moves laterally to any lock column 251 vertically aligned with the corresponding transverse spacing lock hole 28, the upper part of the corresponding lock column 251 is movably inserted in the corresponding aligned transverse spacing lock hole 28, and the lower part of the unlocking column 270 and the upper part of the lock column 251 are respectively inserted into the middle part of the corresponding transverse spacing lock hole 28, and the unlocking column 270 and the lock column 251 inserted in the same transverse spacing lock hole 28 are pressed against each other to ensure the reliability and stability of the unlocking action.

[0142] A ratchet disc 235 is fixed in the middle of the drilling lifting seat 23, and a cam shaft 236 extends longitudinally from the middle of the ratchet disc 235. The hole pitch adjusting cam 233 is rotatably installed on the cam shaft 236. The hole pitch adjusting cam 233 elastically presses against the ratchet disc 235, and a ratchet 237 is fixed in front of the hole pitch adjusting cam 233; a circular convex ring 2350 is provided on the outer edge of the ratchet disc 235, and a circular annular groove 230 is provided on the side of the hole pitch adjusting cam 233 facing the ratchet disc 235, and the circular convex ring 2350 is movably embedded in the circular annular groove 230, so that the hole pitch adjusting cam 233 can rotate stably. The outer edge of the ratchet 237 is provided with a plurality of ratchet teeth at intervals in the circumferential direction, and the lower part of the push rod 234 is provided with a ratchet pushing portion protruding toward one side and cooperating with the ratchet teeth; a plurality of one-way ratchet portions 238 are evenly distributed in the circumferential direction in front of the ratchet disc 235, and a plurality of one-way ratchet holes 239 for transmission cooperation with the one-way ratchet portions 238 are evenly distributed in the circumferential direction behind the hole pitch adjustment cam 233, or a plurality of one-way ratchet holes 239 are evenly distributed in the circumferential direction in front of the ratchet disc 235. A plurality of one-way ratchet portions 238 are evenly spaced along the circumferential direction behind the hole pitch adjusting cam 233 and are in transmission cooperation with the one-way ratchet holes 239; a cam shaft 236 is sleeved with a cam return spring 29 which abuts against the front of the hole pitch adjusting cam 233; when the ratchet wheel 237 exerts a force on the hole pitch adjusting cam 233 to make it rotate in the opposite direction, the hole pitch adjusting cam 233 can jump off in the longitudinal direction relative to the ratchet disk 235, thereby avoiding malfunction when the file binding machine has not entered the hole pitch adjustment mode.

[0143] The transverse positioning lock mechanism has an initial locking state and an unlocking state. When the transverse positioning lock mechanism is in the initial locking state, at least two lock columns 251 are movably inserted in the corresponding transverse spacing lock holes 28; when the transverse positioning lock mechanism is in the unlocking state, the upper part of each lock column 251 is respectively withdrawn to the hole edge or the outside of the corresponding transverse spacing lock hole 28. When the binding hole spacing needs to be adjusted, it needs to be unlocked first, so that the transverse positioning lock mechanism is in the unlocking state to realize the transverse movement of each drilling unit.

[0144] When the transverse positioning lock mechanism is in the initial locking state, at least one lock column 251 is movably inserted in the corresponding transverse spacing lock hole 28; when the transverse positioning lock mechanism is in the unlocking state, the upper end of each lock column 251 is respectively withdrawn to the bottom of the corresponding transverse spacing lock hole 28; the upper part of each lock column 251 is provided with a guiding inclined portion, and the hole edge of the transverse spacing lock hole 28 is provided with a chamfer; the lock column 251 enters and exits the transverse spacing lock hole 28 more smoothly, and when the drilling slide 25 moves laterally, the lock column 251 can slide smoothly to the bottom surface of the drilling slide 25, avoiding the lock column 251 from colliding laterally with the drilling slide 25 due to the upper end of the lock column 251 being slightly higher than the top surface of the transverse sliding block 254 when unlocking. The drilling lifting seat 23 or the drilling slide seat 25 is installed with a transverse limit switch electrically connected to the control circuit. The transverse limit switch is added to sense the transverse extreme position of the transverse sliding block 254. Of course, a corresponding transverse limit switch can also be set at each fixed-distance stop position of the transverse sliding block 254 to ensure that the transverse sliding block 254 accurately stays at the set fixed-distance stop position. The fixed-distance stop position refers to the stop position of the transverse sliding block 254 when any lock column 251 is inserted into any transverse fixed-distance lock hole 28.

[0145] A slide seat return spring 20 is installed in the drilling transverse sliding chamber 232 and abuts against the drilling slide seat 25 to assist in pushing the transverse sliding block 254 to move or return.

[0146] Preferably, the file binding machine is provided with a fixed distance adjustment mode. When the file binding machine enters the fixed distance adjustment mode, the file binding machine performs a fixed distance adjustment action. For example, the fixed distance adjustment button set on the control panel is clicked once, and the file binding machine performs a fixed distance adjustment action. The specific process is: the control circuit controls the drilling lifting seat 23 to move upward from the initial stop position of drilling to the adjustment hole distance stop position. In this process, the unlocking rod 26 is used to push the lateral fixed distance unlocking block 27 downward and make each locking column 251 withdraw from the corresponding lateral fixed distance lock hole 28 respectively, and then the hole distance adjustment cam 233 is used to simultaneously push the left and right drilling units to move horizontally synchronously until a locking column 251 is elastically inserted into the corresponding lateral fixed distance lock hole 28 again, and finally the drilling lifting seat 23 is controlled to move downward and reset to the initial stop position of drilling, and the unlocking rod 26 and the lateral fixed distance unlocking block 27 are respectively moved upward and reset to complete a fixed distance adjustment action. If it is necessary to make the left and right drilling units move horizontally to the next set binding hole position again, click the fixed distance adjustment button again, and the control circuit recycles and performs a fixed distance adjustment action. The invention can automatically adjust the positions of the drill cutter and the wire feeding needle in the transverse direction, can adjust the drilling hole spacing, and the file binding machine can adjust the binding hole spacing.

[0147] A needle body positioning mechanism is installed on the frame 1 or the document binding platform 11, and the needle body positioning mechanism is provided with a needle body positioning plate 6. The needle body positioning plate 6 is provided with at least one needle body positioning groove 61. The middle part or the outer end part of the thread feeding needle 31 is movably inserted in the corresponding needle body positioning groove 61. The thread feeding needle 31 is supported or clamped by the needle body positioning groove 61, so that each thread feeding needle 31 can be stably maintained at a set position and can move vertically up and down, avoiding the thread feeding needle 31 from being skewed or misplaced, especially avoiding the thread feeding needle 31 from being skewed or misplaced after adjusting the lateral position of the thread feeding needle 31, avoiding the occurrence of needle collision.

[0148] Preferably, three needle body positioning grooves 61 arranged laterally at intervals are provided at the front end of the needle body positioning plate 6. Of course, three or more needle body positioning grooves 61 can also be provided at the front end of the needle body positioning plate 6 as needed. Two adjacent needle body positioning grooves 61 have the same or different spacings. The needle body positioning plate 6 can adjust the spacing of the binding holes of the file binding machine so that each thread feeding needle 31 can be quickly inserted into the corresponding needle body positioning groove 61 to achieve rapid auxiliary spacing adjustment with high adjustment accuracy and simple and convenient adjustment.

[0149] Specifically, the needle positioning mechanism includes a plate driving mechanism electrically connected to the control circuit and at least one needle positioning plate 6, the plate driving mechanism is installed on the frame 1, and the plate driving mechanism can also be installed on the document binding platform 11, the needle positioning plate 6 is longitudinally slidably installed on the frame 1 or the document binding platform 11, of course, the needle positioning plate 6 can also be laterally slidably installed on the frame 1 or the document binding platform 11, or, the needle positioning plate 6 is rotatably installed on the frame 1 or the document binding platform 11, and the needle positioning plate 6 can also be slidably installed on the frame 1 or the document binding platform 11 along an inclined direction, the plate driving mechanism is transmission-connected to the needle positioning plate 6, and the automatic wire feeding device 3 is provided with at least one needle unit 30 that is laterally slidably installed, and one needle unit 30 is provided with a wire feeding needle 31. As long as the needle body positioning plate 6 can be movably sleeved or movably engaged with the corresponding thread feeding needle 31 through its needle body positioning groove 61 during the file binding process, it can be separated from the thread feeding needle 31 or provide an escape space for the thread feeding needle 31 when adjusting the left and right positions of the thread feeding needle 31.

[0150] Preferably, a rubber pad mechanism is installed on the frame 1 or the document binding platform 11, and the rubber pad mechanism is provided with a rubber pad driving mechanism installed on the frame 1, at least one rubber pad slider 7 and at least one conductive rubber pad 14 installed on the rubber pad slider 7 for contacting and cooperating with the corresponding drill 21. The rubber pad driving mechanism is transmission-connected to the rubber pad slider 7 and is used to drive the rubber pad slider 7 to slide back and forth along the longitudinal direction. The rubber pad slider 7 is slidably installed on the frame 1 or the document binding platform 11, or the rubber pad slider 7 is rotatably installed on the frame 1 or the document binding platform 11. The rubber pad driving mechanism drives the rubber pad slider 7 to rotate to realize the movement of the conductive rubber pad 14, so that each conductive rubber pad 14 is moved to the bottom of the corresponding drill 21 when drilling, and each conductive rubber pad 14 is moved to one side to avoid the corresponding wire feeding needle when threading or feeding.

[0151] The needle body positioning mechanism is provided with a plate driving mechanism for moving the needle body positioning plate 6. A rubber pad mechanism that is transmission-connected to the needle body positioning plate 6, a drilling device 2 that is transmission-connected to the needle body positioning plate 6, an automatic wire feeding device 3 that is transmission-connected to the needle body positioning plate 6, or a motor driving mechanism that is separately arranged and installed on the frame 1 is selected as the plate driving mechanism, as long as it can drive the needle body positioning plate 6 to achieve the set displacement.

[0152] A sliding cover 77 is installed at the position corresponding to each needle positioning plate 6 on the frame 1 or the document binding platform 11. Preferably, a sliding cover 77 is fixed on the left and right sides of the bottom of the document binding platform 11, and the outer ends of the two needle positioning plates 6 on the left and right sides are slidably installed in the sliding cover 77, which is used to limit and position the needle positioning plate 6 to prevent the needle positioning plate 6 from swinging up and down, and at the same time make the needle positioning plate 6 move back and forth stably.

[0153] Specifically, the needle body positioning plate 6 has a positioning stop position and an avoidance stop position, and the avoidance stop position is set at the rear side of the positioning stop position; when the needle body positioning plate 6 stops at the positioning stop position, the upper part of each thread feeding needle 31 is respectively inserted into one of the needle body positioning grooves 61 of the corresponding needle body positioning plate 6, and the lateral position of each thread feeding needle 31 is positioned by the needle body positioning groove 61, and at the same time, each thread feeding needle 31 can be movably clamped or movably supported, so that each thread feeding needle 31 can be moved up and down relative to the needle body positioning plate 6 while being stabilized, without affecting normal work. When the needle body positioning plate 6 stops at the avoidance stop position, each thread feeding needle 31 stops at the outer side of the corresponding needle body positioning groove 61, and each thread feeding needle 31 can move laterally, and the lateral position of each thread feeding needle 31 can be adjusted.

[0154] In a preferred embodiment, the automatic wire feeding device 3 is provided with a lifting plate 35, three needle body units 30 arranged at intervals on the upper part of the lifting plate 35, and at least one needle body transverse driving mechanism electrically connected to the control circuit, one needle body unit 30 is provided with a wire feeding needle 31; the middle needle body unit 30 is fixed on the upper part of the lifting plate 35, the middle needle body unit 30 has only one wire feeding needle 31, the two needle body units 30 on the left and right sides are respectively installed on the left and right sides of the upper part of the lifting plate 35 for transverse sliding, the two needle body units 30 on the left and right sides respectively include a seat body 32 installed on the lifting plate 35 for transverse sliding and a wire feeding needle 31 fixed on the seat body 32; the two needle body units 30 on the left and right sides are transmission connected to the same needle body transverse driving mechanism or are respectively transmission connected to the corresponding needle body transverse driving mechanisms; preferably, the corresponding seats 32 of the two needle body units 30 are respectively transmission connected through a needle body transverse driving mechanism. The middle thread feeding needle 31 is fixed in the transverse direction, and the left and right thread feeding needles 31 are symmetrically arranged and can adjust their transverse positions synchronously, or the left and right thread feeding needles 31 can adjust their transverse positions independently.

[0155] When the wire feeding needle 31 is in the initial position, the upper ends of the three wire feeding needles 31 are movably inserted into the corresponding three wire feeding slots respectively; the frame 1 or the document binding platform 11 is installed with a plate body reset spring 75 connected to or abutting against the needle body positioning plate 6, and the front end of the plate body reset spring 75 abuts against the needle body positioning plate 6, and the rear end abuts against the frame 1, the document binding platform 11 or the block installed on the document binding platform 11. The plate body reset spring 75 drives the needle body positioning plate 6 to move forward and reset, and the rubber pad driving plate 71 is transmission-connected to the needle body positioning plate 6, so as to drive the needle body positioning plate 6 to move forward and backward.

[0156] The rubber pad driving plate 71 is provided with a drilling forward stop position, a wire feeding backward stop position and a third stop position along the longitudinal direction. The drilling forward stop position is arranged in front of the wire feeding backward stop position, and the third stop position is arranged in the rear of the wire feeding backward stop position; when the rubber pad driving plate 71 moves to the drilling forward stop position, the conductive rubber pad 14 installed on the rubber pad slider 7 moves forward to directly below the drill bit, and when the rubber pad driving plate 71 moves to the wire feeding backward stop position, the front side of the rubber pad slider 7 moves backward to the rear side of the binding wire groove 13.

[0157] The needle body positioning plate 6 has a positioning stop position and an avoidance stop position located at the rear side of the positioning stop position. When the rubber pad driving plate 71 moves between the drilling forward stop position and the wire feeding backward stop position, the transmission column 76 slides freely in the plate driving groove 62, and the needle body positioning plate 6 remains stopped at the positioning stop position; when the rubber pad driving plate 71 moves from the wire feeding backward stop position to the third stop position, the transmission column 76 pushes against the plate driving groove 62 to realize the movement of the needle body positioning plate 6 from the positioning stop position to the avoidance stop position. After the needle body positioning plate 6 moves to the avoidance stop position, the upper part of each wire feeding needle 31 withdraws from the corresponding needle body positioning groove 61 respectively, and the upper part of each wire feeding needle 31 is respectively located on the front side of the corresponding needle body positioning plate 6.

[0158] A driving part is provided at the rear end of the plate driving groove 62, and the front part of the plate driving groove 62 is provided as an empty rung groove for the transmission column 76 to slide freely during the file binding process. When the rubber pad driving plate 71 moves between the forward stop position for drilling and the backward stop position for wire feeding, the transmission column 76 slides freely in the empty rung groove, and the needle body positioning plate 6 remains stationary; when the rubber pad driving plate 71 stops at the backward stop position for wire feeding, the transmission column 76 is adjacent to or against the driving part of the plate driving groove 62; each needle body positioning groove 61 passes through the corresponding needle body positioning plate 6 up and down respectively, and the front side of each needle body positioning groove 61 passes through the front side of the corresponding needle body positioning plate 6 respectively and forms a needle body entrance respectively, and a guiding inclined portion is provided on one side or both sides of the needle body entrance to facilitate the wire feeding needle 31 to be inserted into the needle body positioning groove 61.

Claims

1. A filing binding machine with adjustable drilling hole spacing, comprising a frame (1), a document binding platform (11) for placing or fixing binding documents, a drilling device (2) for drilling binding through holes in the binding documents, an automatic wire feeding device (3), and a control circuit for controlling the drilling device (2) and the automatic wire feeding device (3), wherein the document binding platform (11) is mounted in the middle of the frame (1), a drilling device (2) for drilling holes by moving up and down is arranged above the document binding platform (11), and an automatic wire feeding device (3) is arranged below the document binding platform (11), characterized in that: The drilling device (2) is provided with a drilling lifting mechanism, a drilling lifting seat (23), a drill transverse driving mechanism and a drilling unit arranged on the drilling lifting seat (23) with a transverse interval, the drill transverse driving mechanism is connected to the drilling unit installed in a transverse sliding manner, one drilling unit is provided with a drilling motor (24) and a drill (21) connected to the drilling motor (24), the drilling lifting mechanism is installed on a frame (1) or a document binding platform (11), and the drilling lifting mechanism is connected to the drilling lifting seat (23). The drill cutter transverse drive mechanism comprises a push rod (234) and a hole distance adjustment cam (233) rotatably mounted on the middle part of the drilling lifting seat (23); the push rod (234) is fixedly mounted or slidably mounted on the frame (1); the hole distance adjustment cam (233) is respectively connected to the left and right drilling slide seats (25); when adjusting the binding hole distance, the push rod (234) and the hole distance adjustment cam (233) are matched in transmission; during the drilling or wire feeding process, the hole distance adjustment cam (233) is separated from the push rod (234); The hole spacing adjustment cam (233) has at least two groups of wheel surface units with the same structure arranged in a circumferential direction, the inner ends of the left and right drilling slides (25) are respectively provided with a positioning transmission recess (253), and the wheel surface unit is provided with at least two driving protrusions (2331) with different driving radii, and the driving protrusions (2331) abut against the positioning transmission recess (253) to achieve symmetrical and synchronous driving of the left and right drilling slides (25) to synchronously move laterally; A motor mounting position (231) is provided in the middle of the drilling lifting seat (23), and a drilling motor (24) is fixedly mounted on the motor mounting position (231); A drilling transverse sliding chamber (232) is respectively provided on the left and right sides of the drilling lifting seat (23), and a drilling slide seat (25) is respectively installed in a transverse sliding manner in the two drilling transverse sliding chambers (232), and a drilling motor (24) belonging to the same drilling unit is respectively fixedly installed in the two drilling slide seats (25); The drilling lifting seat (23) is provided with an initial drilling stop position, a lower drilling stop position and a hole spacing adjustment stop position, wherein the hole spacing adjustment stop position is arranged above the initial drilling stop position, and the initial drilling stop position is arranged above the lower drilling stop position; The push rod (234) is arranged vertically, the upper part of the push rod (234) is fixed to the frame (1), the lower part of the push rod (234) forms a pushing portion, the front of the hole spacing adjustment cam (233) is fixedly connected or transmission-connected to a one-way transmission ratchet (237), and the pushing portion and the ratchet (237) are transmission-coordinated during the process of the drilling lifting seat (23) moving from the initial stop position of drilling toward the stop position of adjusting the hole spacing; The automatic wire feeding device (3) is provided with needle units (30) corresponding to the drilling units one by one, a needle transverse driving mechanism, a wire feeding lifting mechanism and a lifting plate (35) at intervals in the transverse direction. The wire feeding lifting mechanism is installed on the frame (1) or the document binding platform (11). The wire feeding lifting mechanism is connected to the lifting plate (35) in a transmission manner. The needle transverse driving mechanism is connected to the needle units (30) that are installed in a transverse sliding manner. Each needle unit (30) is provided with a vertically arranged wire feeding needle (31). Each wire feeding needle (31) is longitudinally aligned or vertically aligned with a corresponding drill (21); The lifting plate (35) is laterally spaced apart and provided with three needle units (30); the needle unit (30) located in the middle is fixed to the lifting plate (35); the needle units (30) located on the left and right sides are respectively laterally slidably mounted on the lifting plate (35); the needle units (30) laterally slidably mounted on the lifting plate (35) include a seat (32) and a thread feeding needle (31) fixed on the upper part of the seat (32); A sliding chamber (36) is respectively provided on the left and right sides of the lifting plate (35), and a corresponding seat body (32) is slidably mounted in each sliding chamber (36); The needle body transverse drive mechanism comprises a transverse drive motor (41) electrically connected to the control circuit and a transverse transmission mechanism, the transverse drive motor (41) is fixed to the lifting plate (35), the transverse transmission mechanism is installed on the lifting plate (35), the transverse drive motor (41) is transmission-connected to the transverse transmission mechanism, and the transverse transmission mechanism is transmission-connected to the left and right base bodies (32); The transverse transmission mechanism comprises a cam (42) and a connecting rod (43). The cam (42) is rotatably mounted in the middle of the lifting plate (35). The transverse driving motor (41) is transmission-connected to the cam (42) for driving the cam (42) to rotate. A connecting rod (43) is respectively arranged on the left and right sides of the cam (42). The left and right sides of the cam (42) are respectively transmission-matched with the inner ends of the corresponding connecting rods (43). The outer ends of the two connecting rods (43) are respectively fixedly connected or transmission-connected to the corresponding seat bodies (32).

2. The file binding machine with adjustable drilling spacing according to claim 1, characterized in that: The drilling lifting mechanism comprises a drilling lifting motor (22) and a drilling lifting transmission mechanism electrically connected to the control circuit, the drilling lifting motor (22) being drivingly connected to the drilling lifting transmission mechanism, the drilling lifting transmission mechanism being drivingly connected to the drilling lifting seat (23), the drilling lifting seat (23) being vertically slidably mounted on the frame (1), and a plurality of the drilling units being laterally spaced apart on the drilling lifting seat (23); The wire feeding lifting mechanism comprises a lifting motor (34) electrically connected to a control circuit and a wire feeding lifting transmission mechanism, the lifting motor (34) being mounted on the frame (1), the lifting motor (34) being transmission-connected to the wire feeding lifting transmission mechanism, the wire feeding lifting transmission mechanism being transmission-connected to the lifting plate (35), the lifting plate (35) being vertically slidably mounted on the frame (1), and a plurality of the needle units (30) being laterally spaced apart on the lifting plate (35).

3. The file binding machine with adjustable drilling spacing according to claim 2, characterized in that: The drilling lifting seat (23) is provided with three drilling units at intervals in the horizontal direction, the drilling unit located in the middle is fixed to the drilling lifting seat (23), the drilling units located on the left and right sides are respectively installed in a horizontal sliding manner on the drilling lifting seat (23), the two drilling units located on the left and right sides are symmetrically arranged, a drilling tool transverse driving mechanism is installed on the front side and / or the rear side of the middle part of the drilling lifting seat (23), and the drilling slide seats (25) of the two drilling units located on the left and right sides are respectively connected to the drilling tool transverse driving mechanism in a driving manner; Each drilling unit is provided with a drill (21) having a hollow middle portion configured as a chip removal through hole and a lower wall configured as a circular blade; The lifting plate (35) is provided with three needle units (30) at intervals in the transverse direction, the needle unit (30) located in the middle is fixed to the lifting plate (35), the needle units (30) located on the left and right sides are respectively installed in the transverse direction of the lifting plate (35) by sliding, the two needle units (30) located on the left and right sides are symmetrically arranged, a needle transverse driving mechanism is installed on the front side and / or the rear side of the middle part of the lifting plate (35), and the base bodies (32) of the two needle units (30) located on the left and right sides are respectively connected to the needle transverse driving mechanism by transmission; Each needle unit (30) is provided with a vertically arranged wire feeding needle (31), the wire feeding needle (31) having a rod body extending in a vertical direction, and the outer end of the wire feeding needle (31) is provided with a wire feeding hook, a wire feeding groove or a wire feeding fork (33).

4. The file binding machine with adjustable drilling spacing according to claim 3, characterized in that: The drilling device (2) is arranged above the document binding platform (11), and the automatic wire feeding device (3) is arranged below the document binding platform (11), and the drilling device (2) and the automatic wire feeding device (3) are arranged opposite to each other in an upper and lower direction; The document binding platform (11) is provided with a laterally extending binding wire groove (13), and the binding wire groove (13) is provided with a wire feeding slot hole which passes through the document binding platform (11) from top to bottom at least at a position corresponding to each of the wire feeding needles (31), and when the wire feeding needles (31) are in an initial position, the upper end of each of the wire feeding needles (31) is movably inserted into the corresponding wire feeding slot hole; A vertically arranged guide column (12) is respectively arranged on the left and right sides of the frame (1), the guide column (12) is fixed above the document binding platform (11), and the left and right sides of the drilling lifting seat (23) are respectively slidably mounted on the corresponding guide column (12); Each drilling motor (24) is provided with a drilling transmission shaft, and each drill bit (21) is respectively transmission-connected or fixedly mounted on the drilling transmission shaft of the drilling motor (24) belonging to the same drilling unit; A vertically arranged wire feeding guide column (15) is respectively arranged on the left and right sides of the frame. The wire feeding guide column (15) is fixed below the document binding platform (11). The left and right sides of the lifting plate (35) are respectively slidably mounted on the corresponding wire feeding guide column (15).

5. A filing binding machine with adjustable drilling spacing according to any one of claims 1 to 4, characterized in that: The drilling device (2) is provided with a drilling state and a binding hole spacing adjustment state. When the drilling device (2) is in a drilling state, the drilling lifting seat (23) moves downward between the drilling initial stop position and the drilling lower stop position; When the drilling device (2) is in the binding hole pitch adjustment state, the drilling lifting seat (23) moves upward between the drilling initial stop position and the hole pitch adjustment stop position; During the process of the drilling lifting seat (23) moving from the initial drilling stop position toward the hole spacing adjustment stop position, the drilling lifting seat (23) moves upward relative to the push rod (234), and the push rod (234) pushes against the hole spacing adjustment cam (233), so as to drive the hole spacing adjustment cam (233) to rotate and respectively push the left and right drilling slide seats (25) to move horizontally through the hole spacing adjustment cam (233).

6. The filing binding machine with adjustable drilling spacing according to claim 5, characterized in that: A ratchet disc (235) is fixed in the middle of the drilling lifting seat (23), a cam shaft (236) extends longitudinally from the middle of the ratchet disc (235), the hole spacing adjustment cam (233) is rotatably mounted on the cam shaft (236), the hole spacing adjustment cam (233) elastically abuts against the ratchet disc (235), and a ratchet (237) is fixed in front of the hole spacing adjustment cam (233); The outer edge of the ratchet wheel (237) is provided with a plurality of ratchet teeth spaced apart in the circumferential direction, and the lower portion of the push rod (234) is provided with a ratchet tooth pushing portion protruding toward one side and cooperating with the ratchet teeth; A circular convex ring (2350) is provided on the outer edge of the ratchet disc (235); a circular annular groove (230) is provided on a side of the hole spacing adjustment cam (233) facing the ratchet disc (235); and the circular convex ring (2350) is movably embedded in the circular annular groove (230); A plurality of one-way ratchets (238) are evenly spaced in the circumferential direction in front of the ratchet disc (235), and a plurality of one-way ratchets (239) are evenly spaced in the circumferential direction behind the hole pitch adjustment cam (233) for transmission cooperation with the one-way ratchets (238); or a plurality of one-way ratchets (239) are evenly spaced in the circumferential direction in front of the ratchet disc (235), and a plurality of one-way ratchets (238) are evenly spaced in the circumferential direction behind the hole pitch adjustment cam (233) for transmission cooperation with the one-way ratchets (239); The drilling lifting seat (23) or the drilling slide seat (25) is equipped with a transverse limit switch electrically connected to the control circuit; The cam shaft (236) is sleeved with a cam return spring (29) which abuts against the front of the hole distance adjustment cam (233); A slide seat return spring (20) abutting against the drilling slide seat (25) is installed in the drilling transverse slide chamber (232).

7. A filing binding machine with adjustable drilling spacing according to any one of claims 1 to 4, characterized in that: The drilling unit installed in a transverse sliding manner is provided with a drilling slide seat (25), and a transverse positioning lock mechanism is provided between the drilling lifting seat (23) and the drilling slide seat (25), and the transverse positioning lock mechanism comprises at least two locking columns (251) respectively provided on the drilling lifting seat (23) and the drilling slide seat (25) and at least two transverse fixed-distance locking holes (28), one of which is provided on the drilling lifting seat (23) and the other is provided on the drilling unit installed in a transverse sliding manner; The transverse fixed-distance locking holes (28) are locked with corresponding locking posts (251), and after the drilling slide (25) stops at any designated position, at least one locking post (251) in each drilling slide (25) is movably inserted into the corresponding transverse fixed-distance locking hole (28).

8. The filing binding machine with adjustable drilling spacing according to claim 7, characterized in that: The transverse positioning lock mechanism comprises an unlocking rod (26), a transverse fixed-distance unlocking block (27), a plurality of lock posts (251) and a plurality of transverse fixed-distance lock holes (28); the drilling slide seat (25) is provided with a plurality of lock post installation holes (252) arranged transversely at intervals, and each lock post installation hole (252) is slidably installed with a lock post (251) in a vertical direction; The drilling lifting seat (23) is provided with a plurality of transversely spaced locking holes (28) in an area corresponding to the locking column mounting hole (252); The unlocking rod (26) is vertically slidably mounted on the frame (1) or the drilling lifting seat (23), and the unlocking rod (26) is fixedly connected or transmission-connected to a corresponding transverse fixed-distance unlocking block (27), and the transverse fixed-distance unlocking block (27) is respectively transmission-coordinated with each locking column (251) for making each locking column (251) withdraw from the corresponding transverse fixed-distance lock hole (28) when unlocking; After the drilling slide (25) stops at any specified position, at least two locking pins (251) in each drilling slide (25) are movably inserted into two corresponding transverse fixed-distance locking holes (28); after the drilling slide (25) stops at any specified position, the locking pins (251) that are not aligned with any transverse fixed-distance locking holes (28) elastically press against the drilling lifting seat (23).

9. The filing binding machine with adjustable drilling spacing according to claim 8, characterized in that: A drilling transverse sliding chamber (232) is respectively provided on the left and right sides of the drilling lifting seat (23); The lower part of the transverse fixed distance unlocking block (27) is provided with unlocking posts (270) corresponding to each of the transverse fixed distance lock holes (28) at a transverse interval, and the lower part of each unlocking post (270) is inserted into the corresponding transverse fixed distance lock hole (28), and each transverse fixed distance lock hole (28) is provided with an unlocking post (270) movably inserted therein; The lower end of the unlocking rod (26) abuts against the upper part of the transverse fixed-distance unlocking block (27), and the unlocking rod (26) is sleeved with an unlocking rod return spring for elastically abutting the unlocking rod (26) to move toward the side where the transverse fixed-distance unlocking block (27) is located; When the drilling slide (25) moves laterally to a point where any locking column (251) is vertically aligned with the corresponding transverse fixed-distance locking hole (28), the upper portion of the corresponding locking column (251) is movably inserted into the corresponding aligned transverse fixed-distance locking hole (28), the lower portion of the unlocking column (270) and the upper portion of the locking column (251) are respectively inserted into the middle portion of the corresponding transverse fixed-distance locking hole (28), the unlocking column (270) and the locking column (251) inserted in the same transverse fixed-distance locking hole (28) are abutted against each other, and after the drilling slide (25) stops at any designated position, the locking column (251) that is not aligned with any transverse fixed-distance locking hole (28) elastically abuts against the drilling lifting seat (23); The lower part of the drilling transverse sliding chamber (232) longitudinally penetrates the front side and the rear side of the drilling lifting seat (23) and forms a transverse sliding groove respectively. The front side and the rear side of the drilling sliding seat (25) are respectively provided with a transverse sliding block (254). The two transverse sliding blocks (254) of the drilling sliding seat (25) are respectively slidably installed in the corresponding transverse sliding grooves. The transverse sliding block (254) is laterally spaced and provided with a plurality of lock column mounting holes (252) at least the upper portion of which penetrates the transverse sliding block (254); The drilling lifting seat (23) is provided with a transverse locking portion (255) above the transverse sliding block (254), and the transverse locking portion (255) is provided with a plurality of transverse fixed-distance locking holes (28) spaced laterally, and a slider installation chamber (257) is provided in the upper portion of the transverse locking portion (255) corresponding to the area where the transverse fixed-distance locking holes (28) are located, and the upper ends of the transverse fixed-distance locking holes (28) are respectively connected to the corresponding slider installation chamber (257), and the transverse fixed-distance unlocking block (27) is vertically slidably installed in the slider installation chamber (257); After the drilling slide (25) stops at any designated position, the locking column (251) that is not aligned with any transverse fixed-distance locking hole (28) elastically presses against the bottom surface of the transverse locking portion (255); The upper portion of each locking column (251) is provided with a guiding inclined portion, and the hole edge of the transverse fixed-distance locking hole (28) is provided with a chamfer; A lock post return spring is installed in each of the lock post installation holes (252) for elastically pressing the lock post (251) to move toward the transverse fixed-distance lock hole (28); A slide seat return spring (20) is installed in the drilling transverse slide chamber (232) and abuts against the drilling slide seat (25); The drilling lifting seat (23) or the drilling sliding seat (25) is equipped with a transverse limit switch electrically connected to the control circuit; A fixing plate (256) is fixed to the upper portion of the transverse locking portion (255) for restricting the transverse spacing unlocking block (27) in the slider installation chamber (257).

10. The filing binding machine with adjustable drilling spacing according to any one of claims 1 to 4, characterized in that: The frame (1) or the document binding platform (11) is equipped with a rubber pad mechanism, which is provided with a rubber pad driving mechanism installed on the frame (1), three rubber pad sliders (7) and a conductive rubber pad (14) installed in each rubber pad slider (7) for contacting and cooperating with a corresponding drill (21); the rubber pad driving mechanism is connected to the rubber pad slider (7) in a transmission manner, and the rubber pad slider (7) is slidably mounted or rotatably mounted on the frame (1) or the document binding platform (11); when drilling, each conductive rubber pad (14) is located below the corresponding drill (21), and the conductive rubber pad (14) is electrically connected to the control circuit and is used to send a drilling reset signal to the control circuit when the drill (21) contacts the conductive rubber pad (14); At least one needle body positioning plate (6) is installed on the frame (1) or the document binding platform (11). The needle body positioning plate (6) is installed to slide horizontally, slide along an inclined direction, slide longitudinally or rotate on the frame (1) or the document binding platform (11). The needle body positioning plate (6) is transmission-connected to a rubber pad driving mechanism, a drilling device (2), an automatic wire feeding device (3) or a motor driving mechanism separately installed on the frame (1). The needle body positioning plate (6) is provided with a plurality of needle body positioning grooves (61). The middle part or the outer end part of each of the wire feeding needles (31) is movably inserted into one of the needle body positioning grooves (61) of the corresponding needle body positioning plate (6).

11. The filing binding machine with adjustable drilling spacing according to claim 10, characterized in that: A needle body positioning plate (6) is longitudinally slidably mounted on the bottom of the document binding platform (11) at a position longitudinally aligned with each thread feeding needle (31), and a plurality of needle body positioning grooves (61) are respectively provided at the front end of the needle body positioning plate (6), and each of the needle body positioning grooves (61) respectively penetrates the corresponding needle body positioning plate (6) up and down, and the front side of each needle body positioning groove (61) respectively penetrates the front side of the corresponding needle body positioning plate (6) and forms a needle body entrance, and a guiding inclined portion is provided on one side or both sides of the needle body entrance; The frame (1) or the document binding platform (11) is provided with a plate return spring (75) connected to or abutting against the needle positioning plate (6); The rubber pad driving mechanism comprises a rubber pad driving motor (73) mounted on the frame (1), and a rubber pad driving plate (71) mounted on the frame (1) in a longitudinally slidable manner, the rubber pad driving motor (73) being drivingly connected to the rubber pad driving plate (71), and the rubber pad driving plate (71) being drivingly connected to the three rubber pad sliders (7) respectively; The needle body positioning plate (6) is provided with a plate body driving groove (62) extending longitudinally, and the rubber pad driving plate (71) is provided with a driving column (76) at a position corresponding to each needle body positioning plate (6), and each driving column (76) is movably inserted in the plate body driving groove (62) of the corresponding needle body positioning plate (6) and is used to drive the needle body positioning plate (6) to move in the longitudinal direction, so as to realize the movement of the needle body positioning plate (6) driven by the rubber pad driving plate (71); The rubber pad driving plate (71) is provided with a drilling forward stop position, a wire feeding backward stop position and a third stop position in the longitudinal direction, the drilling forward stop position is arranged in front of the wire feeding backward stop position, and the third stop position is arranged in the rear of the wire feeding backward stop position; The document binding platform (11) is provided with a laterally extending binding wire groove (13); when the rubber pad driving plate (71) moves to a drilling forward stop position, the conductive rubber pad (14) mounted on the rubber pad slider (7) moves forward to directly below the drill bit; when the rubber pad driving plate (71) moves to a wire feeding backward stop position, the front side of the rubber pad slider (7) moves backward to the rear side of the binding wire groove (13); The needle body positioning plate (6) has a positioning stop position and an avoidance stop position, and the avoidance stop position is arranged at the rear side of the positioning stop position; when the rubber pad driving plate (71) moves between the drilling forward stop position and the wire feeding backward stop position, the transmission column (76) slides freely in the plate driving groove (62), and the needle body positioning plate (6) remains stopped at the positioning stop position; When the rubber pad driving plate (71) moves from the wire feeding backward stop position to the third stop position, the transmission column (76) pushes against the plate driving groove (62) to enable the needle body positioning plate (6) to move from the positioning stop position to the avoidance stop position. After the needle body positioning plate (6) moves to the avoidance stop position, the upper part of each wire feeding needle (31) respectively withdraws from the corresponding needle body positioning groove (61), and the upper part of each wire feeding needle (31) is respectively located at the front side of the corresponding needle body positioning plate (6); When the needle body positioning plate (6) stops at the positioning stop position, the upper portion of each thread feeding needle (31) is respectively inserted into one of the needle body positioning grooves (61) of the corresponding needle body positioning plate (6); When the needle body positioning plate (6) stops at the avoidance stop position, each thread feeding needle (31) stops at the outer side of the corresponding needle body positioning groove (61).

12. A filing binding machine with adjustable drilling spacing according to any one of claims 1 to 4, characterized in that: The cam (42) is provided with at least two groups of wheel surface units with the same structure arranged along the circumferential direction; a sliding sleeve (44) is fixed to the left and right sides of the lifting plate (35) respectively; the two connecting rods (43) are symmetrically arranged on the left and right sides of the cam (42); the two connecting rods (43) are respectively slidably inserted in the corresponding sliding sleeves (44); the inner ends of the two connecting rods (43) respectively abut against the corresponding wheel surface units; the cam (42) is provided with two groups of wheel surface units with the same structure arranged circumferentially along the circumferential direction to achieve symmetrical and synchronous driving of the connecting rods (43) on both sides to move synchronously; the inner end of the connecting rod (43) is provided with a self-locking recess; the wheel surface unit is provided with at least two self-locking protrusions (49) with different driving radii; the self-locking protrusions (49) abut against the self-locking recess; At least one slide rod (45) is respectively fixed to the lifting plate (35) and / or the two sliding chambers (36), and the seat body (32) is slidably mounted on the corresponding slide rod (45); A distance mechanism is provided between the seat body (32) and the slide rod (45), between the seat body (32) and the lifting plate (35), between the connecting rod (43) and the sliding sleeve (44), between the connecting rod (43) and the lifting plate (35), or between the cam (42) and the lifting plate (35); Two upper and lower slide bars (45) are respectively screwed and fixed on the left and right sides of the lifting plate (35), and each slide bar (45) respectively passes through the corresponding sliding chamber (36) transversely. The slide bar (45) is sleeved with a spring (48), and the outer end of the spring (48) abuts against the sliding chamber (36) and the inner end abuts against the seat body (32); The top surface of the seat body (32) is aligned with the top surface of the lifting plate (35), and a thread feeding needle (31) vertically arranged upward is fixed to the top of the middle part of the lifting plate (35) and the tops of the two seat bodies (32); At least one induction switch (38) electrically connected to the control circuit and used for detecting the lateral position of the seat body (32) is provided on the connecting rod (43) or the lifting plate (35).

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