Three-hole binding machine with adjustable hole pitch

Abstract

The utility model discloses a pitch-adjustable three-hole binding machine, which is characterized in that a synchronous adjusting device is further arranged below a binding platform, the synchronous adjusting device comprises three synchronous seats arranged at intervals, at least two synchronous seats are transversely mounted on a rack in a sliding manner, and each synchronous seat is respectively aligned with a corresponding drilling component up and down; a first linkage groove extending in the vertical direction is formed in the front side of the synchronous seat, and a second linkage groove horizontally extending in the front-back direction is formed in the top of the synchronous seat; each needle threading assembly is connected to the threading lifting seat in a sliding manner and is movably clamped to the first linkage groove of the corresponding synchronous seat; each rubber mat assembly is connected to the rubber mat driving seat in a sliding mode and movably connected to the second linkage groove of the corresponding synchronous seat in a clamped mode. Compared with the prior art, according to the scheme, through the drilling tool, the threading needle and the conductive rubber mat which are synchronously and movably arranged, the hole pitch adjusting limit of the three-hole binding machine is improved, and the chip removal problem of the hole pitch-adjustable drilling assembly is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of financial binding machines, in particular to a three-hole binding machine with adjustable hole spacing. Background Art

[0002] Existing automatic financial binding machines generally include a drilling device and a threading device respectively arranged on the upper and lower parts of the binding platform. They are respectively provided with corresponding upper and lower drills and threading needles. Usually, the positions of the drills and threading needles are fixed, and the binding hole spacing of the binding machine cannot be adjusted. With the innovation of technology, there are also financial binding machines with adjustable hole spacing on the market, such as the application number "CN202010209834.9" and the patent name "A file binding machine with adjustable drilling spacing". The binding machine shown in the patent drives the drills and needle units on both sides through cams, and positions the hole spacing through a linked latch structure. The hole pitch of this hole pitch adjustment structure is preset and is a conversion of fixed hole pitch. In practical applications, it is difficult to meet the requirements of document binding of different sizes, and the hole pitch is easily too large or too small, making it difficult to achieve the best binding effect. The conductive rubber pad is set to slide back and forth, and is only used to avoid the threading needle. The conductive rubber pad is fixed in the left and right directions, and the drill needs to be triggered and coordinated with the conductive rubber pad during the hole turning process. Therefore, the hole pitch adjustment limit of the drill in this solution is not greater than the diameter of the conductive rubber pad, which makes the hole pitch adjustment of the binding machine more limited, making it difficult to cope with more large-sized document binding work. In addition, this binding machine also has the problems of complex structure, many components and a high failure rate. Utility Model Content

[0003] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a three-hole binding machine with adjustable hole pitch, so as to improve the hole pitch adjustment range and adjustment freedom of the binding machine and realize stepless hole pitch adjustment.

[0004] In order to achieve the above-mentioned purpose, the technical scheme adopted by the utility model is: a three-hole binding machine with adjustable hole spacing, including a drilling device, a conductive rubber pad device, a threading device, a frame and a binding platform, the binding platform is arranged in the middle position of the frame, the drilling device is arranged above the binding platform, the conductive rubber pad device is arranged on the binding platform, and the threading device is arranged below the binding platform, the drilling device includes a drilling lifting drive device, a drilling lifting seat and three drilling components arranged at intervals, the drilling lifting seat is installed on the frame in an up and down sliding manner, and is connected to the drilling lifting drive device by transmission; a drill is provided at the bottom of the drilling component, at least two drilling components are installed on the drilling lifting seat in a transverse sliding manner, and two adjacent drilling components are matched to move closer or farther away to form two adjustable punching intervals; a synchronous adjustment device is also provided below the binding platform, the synchronous adjustment device includes three synchronous seats arranged at intervals, at least two synchronous seats are installed on the frame in a transverse sliding manner, each synchronous seat is aligned with the corresponding drilling component up and down, and is aligned with it For synchronous movement cooperation, the front side of the synchronous seat is provided with a first linkage groove extending in the vertical direction, and the top is provided with a second linkage groove extending horizontally in the front-to-back direction; the threading device comprises a threading drive device, a threading lifting seat and three needle threading assemblies arranged at intervals, the threading lifting seat is movably assembled on the frame up and down, and is connected to the threading drive device by transmission; a threading needle is provided on the top of the needle threading assembly, and each needle threading assembly is slidably connected to the threading lifting seat, and is movably connected to the first linkage groove of the corresponding synchronous seat, so as to realize that the threading needle of each needle threading assembly is synchronously aligned with the corresponding drill bit; the conductive rubber pad device comprises a rubber pad driving device, a rubber pad driving seat and three rubber pad assemblies arranged at intervals, the rubber pad driving seat is horizontally movably installed on the frame along the front-to-back direction, and is connected to the rubber pad driving device by transmission; a conductive rubber pad is provided on the top surface of the rubber pad assembly, and each rubber pad assembly is slidably connected to the rubber pad driving seat, and is movably connected to the second linkage groove of the corresponding synchronous seat, so as to realize that the conductive rubber pad of each rubber pad assembly is synchronously aligned with the corresponding drill bit.

[0005] In a further technical solution, a drilling lifting seat is provided with a laterally extending hole spacing adjustment track, a drilling assembly in the middle is fixedly mounted on the drilling lifting seat, and the drilling assemblies on both sides are respectively slidably mounted on the hole spacing adjustment track and are respectively connected to hole spacing adjustment driving devices, and the two drilling assemblies respectively move toward or away from the drilling assembly in the middle; a synchronization bracket is provided under the binding platform, and the synchronization bracket is provided with a laterally extending synchronization track, and the synchronization seat in the middle is fixedly mounted on the synchronization bracket and aligned up and down with the fixedly mounted drilling assembly; the synchronization seats on both sides are respectively slidably mounted on the synchronization guide rails and are respectively connected to the synchronization driving devices, and the two synchronization seats are respectively aligned up and down with the corresponding drilling assemblies.

[0006] In a further technical solution, a control device is also provided; the hole pitch adjustment drive device includes a hole pitch adjustment drive motor, a hole pitch adjustment bidirectional screw and a first screw angle measurement device, the hole pitch adjustment drive motor is fixedly installed on the drilling lifting seat; the hole pitch adjustment bidirectional screw is rotatably installed on the drilling lifting seat, and is transmission-connected to the hole pitch adjustment drive motor, wherein the left and right drilling assemblies are respectively equipped with screw pairs, and are respectively connected to the two side sections of the hole pitch adjustment bidirectional screw through the screw pair threads; the screw angle measurement device is installed on the side of the drilling lifting seat, and is connected to the hole pitch adjustment bidirectional screw; the screw angle measurement device and the hole pitch adjustment drive motor are respectively electrically connected to the control device , to quantitatively control the size adjustment of the punching interval; the synchronous drive device includes a synchronous drive motor, a synchronous bidirectional screw and a second screw angle metering device, and the synchronous drive motor is fixedly installed on the synchronous bracket; the synchronous bidirectional screw is rotatably installed on the synchronous bracket and is transmission-connected to the synchronous drive motor, wherein the synchronous seats on the left and right sides are respectively equipped with other screw pairs, and are respectively connected to the two side sections of the synchronous bidirectional screw through the screw pair threads; the second screw angle metering device is installed on the side of the synchronous bracket and connected to the synchronous bidirectional screw; the screw angle metering device and the synchronous drive motor are respectively electrically connected to the control device to quantitatively control the lateral movement stroke of the threading needle and the conductive rubber pad.

[0007] In a further technical solution, the hole spacing adjustment drive device and the synchronous drive device respectively include a control motor, a bidirectional lead screw and an angular measurement structure, wherein the angular measurement structure includes a trigger turntable and an infrared photoelectric switch, the trigger turntable is coaxially installed on the end of the bidirectional lead screw, a plurality of trigger units are provided on the edge of the trigger turntable, and each trigger unit is arranged at intervals along the circumferential direction; the infrared photoelectric switch is fixed on one side of the trigger turntable, and each trigger unit is triggered and coordinated with the infrared photoelectric switch in turn, and the infrared photoelectric switch and the control motor are electrically connected to the control device respectively.

[0008] In a further technical solution, the infrared photoelectric switch has a transmitting end and a receiving end, a trigger space is formed between the transmitting end and the receiving end, and the trigger turntable is located between the transmitting end and the receiving end; the trigger unit is set as a leakage hole penetrating the trigger turntable, and the movement trajectory of each leakage hole passes through the trigger space respectively. When the leakage hole passes through the trigger space, the receiving end receives a light signal from the transmitting end once, and performs an angular measurement, and at the same time sends a measurement signal to the control device. After receiving the measurement signal, the control device performs a distance calculation, and the fitting clearance between the bidirectional lead screw and the lead screw pair is 20μm-60μm.

[0009] In a further technical solution, a paper scrap collection box is installed on the front side of the drilling lifting seat; the drilling assembly includes a drill seat, a drill drive motor, a drill, a transmission gear set, a drill drive cylinder and a paper scrap channel member, and the drill seat is movably installed on the drilling lifting seat; the drill drive motor is fixed to the drill seat; the transmission gear set is rotatably installed inside the drill seat, and the input end of the transmission gear set is connected to the output shaft of the drill drive motor; the drill drive cylinder is rotatably installed inside the drill seat, and a paper scrap discharge pipe is provided on the top of the drill drive cylinder, and the drill is coaxially fixed to the bottom end of the drill drive cylinder; a paper scrap guide slope is formed on the front side of the drill seat, and the bottom edge of the paper scrap guide slope is close to the paper scrap collection box and higher than the opening of the paper scrap collection box, and the paper scrap discharge pipe protrudes from the paper scrap guide slope of the drill seat; the paper scrap channel member is semi-enclosed, and the paper scrap channel member is fixed to the top of the drill seat, and covers the paper scrap guide slope and the protruding part of the paper scrap discharge pipe, and the paper scrap channel member and the paper scrap guide slope surround to form a paper scrap discharge channel.

[0010] In a further technical solution, the top of the synchronous seat is provided with a wire feeding guide hole which passes through the top and the bottom, and the wire feeding guide hole matches the threading needle. Each threading needle is respectively matched with the gap of the wire feeding guide hole of the corresponding synchronous seat to improve the working stability of the threading needle; the top of each synchronous seat is respectively provided with a horizontally penetrating positioning wire groove, and the positioning wire groove passes through the wire feeding guide hole; the table top of the binding platform is provided with a wire release groove, and each positioning wire groove is respectively located directly below the wire release groove and aligned with it.

[0011] In a further technical solution, the rubber pad driving device includes a rubber pad driving motor, a rubber pad driving gear and a rubber pad driving rack, the rubber pad driving motor is fixed to the frame; the rubber pad driving gear is installed on the output shaft of the rubber pad driving motor; the rubber pad driving rack is fixed to the rubber pad driving seat or any one of the rubber pad components, and the rubber pad driving rack is meshed and connected to the rubber pad driving gear; a rubber pad travel switch is respectively provided on the front and rear sides of the rubber pad driving seat, and the rubber pad travel switch cooperates with the rubber pad driving seat to trigger.

[0012] In a further technical solution, the threading drive device includes a threading drive motor, a threading drive gear and a threading drive rack. The threading drive motor is fixed to the frame; the threading drive gear is installed on the output shaft of the threading drive motor; the threading drive rack is fixed to the threading lifting seat or any one of the needle threading components, and the threading drive rack is meshed and connected to the threading drive rack; a threading travel switch is respectively provided on the front and rear sides of the threading lifting seat, and the threading travel switch cooperates with the threading lifting seat trigger.

[0013] In a further technical solution, a paper pressing plate is movably provided under the drilling lifting seat, and a movable connecting rod is installed on both sides of the paper pressing plate. The tops of the two movable connecting rods are movably inserted into the drilling lifting seat respectively, and are respectively sleeved with a compression spring, the upper end of the compression spring is connected to the drilling lifting seat, and the lower end is connected to the paper pressing plate; the paper pressing plate is provided with a hollow drill avoidance groove, and the drill avoidance groove is extended along the lateral direction.

[0014] After adopting the above structure, the advantages of the utility model compared with the prior art are: the utility model improves the hole spacing adjustment limit of the three-hole binding machine through the synchronously arranged drill, threading needle and conductive rubber pad, thereby improving the application range of the binding machine; the two-way screw drives the drill, threading needle and conductive rubber pad to make synchronous spacing adjustment movements, thereby realizing stepless hole spacing adjustment of the binding machine, providing users with more specifications of binding hole spacings and improving the binding quality; by controlling the rotation angle of the two-way screw, quantitative control of the binding hole spacing adjustment is realized, which has the advantage of high hole spacing control accuracy, can further improve the control accuracy of the binding hole spacing of the binding machine and bring users more diverse customized choices; the synchronous seat is provided with a wire feeding guide hole and a positioning wire groove structure, which can improve the working stability of the threading needle, and under the positioning auxiliary effect of the positioning wire groove, the thread hooking success rate of the threading needle can be further improved, thereby improving the working stability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Figure 2 It is a schematic diagram of the internal structure of the utility model.

[0018] Figure 3 It is an exploded schematic diagram of the synchronous adjustment device in the utility model.

[0019] Figure 4 It is a structural schematic diagram of the synchronous seat in the utility model.

[0020] Figure 5 It is a structural schematic diagram of the utility model from another viewing angle.

[0021] Figure 6 It is a structural schematic diagram of the drilling device in the utility model.

[0022] Figure 7 yes Figure 6 Magnified view of point A in . DETAILED DESCRIPTION

[0023] The following are only preferred embodiments of the present invention, and do not limit the protection scope of the present invention.

[0024] In order to solve the design defects and problems of the binding machine with adjustable hole pitch in the prior art, the utility model proposes the following three-hole binding machine, which replaces the existing gear-type hole pitch adjustment and realizes stepless hole position adjustment of the three-hole binding machine.

[0025] like Figures 1 to 7 As shown, a three-hole binding machine with adjustable hole spacing includes a drilling device, a conductive rubber pad 502 device, a threading device, a frame and a binding platform 1. The binding platform 1 is arranged in the middle of the frame. The surface of the binding platform 1 is provided with a lifting platform 11. The lifting platform 11 is suspended and assembled on the surface of the binding platform 1 through a plurality of lifting support rods 110. The drilling device is arranged above the lifting platform 11, the conductive rubber pad 502 device is arranged on the binding platform 1, and the threading device is arranged below the binding platform 1. The drilling device includes a drilling lifting drive device, a drilling lifting seat 2 and three drilling components 20 arranged at intervals. The lifting platform 110 is provided with a plurality of lifting support rods 110. Lifting slide bars 12 are provided on both sides, and the drilling lifting seat 2 is installed on the lifting slide bars 12 in an up-and-down manner, and is connected to the drilling lifting drive device by transmission; a drill 21 is provided at the bottom of the drilling assembly 20, and at least two drilling assemblies 20 are installed on the drilling lifting seat 2 in a transverse sliding manner, and two adjacent drilling assemblies 20 are moved closer or farther away to form two adjustable punching intervals; a synchronous adjustment device is also provided below the binding platform 1, and the synchronous adjustment device includes three synchronous seats 40 arranged at intervals, and at least two synchronous seats 40 are installed on the frame in a transverse sliding manner, and each synchronous seat 40 is respectively connected to the corresponding drilling assembly The synchronous seat 40 is aligned with the machine frame 20 up and down and moves synchronously therewith. The front side of the synchronous seat 40 is provided with a first linkage groove 401 extending in the vertical direction, and the top is provided with a second linkage groove 402 extending horizontally in the front-to-back direction; the threading device includes a threading drive device, a threading lifting seat 301 and three needle threading assemblies 30 arranged at intervals. The threading lifting seat 301 is movably assembled on the frame up and down and is connected to the threading drive device by transmission; a threading needle 31 is provided on the top of the needle threading assembly 30, and each needle threading assembly 30 is slidably connected to the threading lifting seat 301, and is movably connected to the first linkage groove 401 of the corresponding synchronous seat 40. So as to realize that the threading needle 31 of each needle threading assembly 30 is respectively aligned synchronously with the corresponding drill 21; the conductive rubber pad 502 device includes a rubber pad driving device, a rubber pad driving seat 51 and three rubber pad assemblies 50 arranged at intervals, and the rubber pad driving seat 51 is horizontally movably installed on the frame along the front and rear directions, and is transmission-connected to the rubber pad driving device; a conductive rubber pad 502 is provided on the top surface of the rubber pad assembly 50, and each rubber pad assembly 50 is respectively slidably connected to the rubber pad driving seat 51, and is movably connected to the second linkage slot 402 of the corresponding synchronization seat 40, so as to realize that the conductive rubber pad 502 of each rubber pad assembly 50 is respectively aligned synchronously with the corresponding drill 21.

[0026] The drill bit 21, the thread-passing needle 31, and the conductive rubber pad 502 set through synchronous activities improve the hole pitch adjustment limit of the three-hole binding machine, thereby expanding the applicable range of the binding machine.

[0027] Specifically, the drilling lifting seat 2 is provided with a hole pitch adjustment track extending horizontally. The drilling assembly 20 in the middle is fixedly installed on the drilling lifting seat 2. The drilling assemblies 20 on both sides are respectively slidably installed on the hole pitch adjustment track and are respectively connected with hole pitch adjustment driving devices. These two drilling assemblies 20 move closer to or away from the drilling assembly 20 in the middle in a coordinated manner; a synchronous support is provided below the binding platform 1. The synchronous support is provided with a synchronous track extending horizontally. The synchronous seat 40 in the middle is fixedly installed on the synchronous support and is vertically aligned with the fixedly installed drilling assembly 20; the synchronous seats 40 on both sides are respectively slidably installed on the synchronous guide rails and are respectively connected with synchronous driving devices. These two synchronous seats 40 are respectively vertically aligned with the corresponding drilling assemblies 20.

[0028] Specifically, the hole pitch adjustment drive device includes a hole pitch adjustment drive motor, a hole pitch adjustment bidirectional screw rod 26 and a first screw rod angle measurement device, the hole pitch adjustment drive motor is fixedly mounted on the drilling lifting seat 2; the hole pitch adjustment bidirectional screw rod 26 is rotatably mounted on the drilling lifting seat 2, and is transmission-connected to the hole pitch adjustment drive motor, wherein the middle drilling assembly 20 is fixed to the drilling lifting seat 2, and the drilling assemblies 20 on the left and right sides are respectively equipped with screw rod pairs, and are respectively connected to the two side sections of the hole pitch adjustment bidirectional screw rod 26 through the screw rod pair threads; the screw rod angle measurement device is assembled on the side of the drilling lifting seat 2, and is connected to the hole pitch adjustment bidirectional screw rod 26; the screw rod angle measurement device and the hole pitch adjustment drive motor are respectively electrically connected to the control device to quantitatively control the size adjustment of the drilling interval; the synchronous drive device includes a synchronous drive motor 49 , a synchronous bidirectional lead screw 41 and a second lead screw angle measuring device, a synchronous drive motor 49 is fixedly mounted on a synchronous bracket; the synchronous bracket is provided with two synchronous light rods 42, and each synchronous seat 40 is slidably assembled on the synchronous light rod 42, wherein the middle synchronous seat 40 is also fixed on the synchronous bracket or the frame; the synchronous bidirectional lead screw 41 is rotatably mounted on the synchronous bracket, and is transmission-connected to the synchronous drive motor 49, wherein the synchronous seats 40 on the left and right sides are respectively equipped with another lead screw pair, and are respectively connected to the two side sections of the synchronous bidirectional lead screw 41 through the lead screw pair threads; the second lead screw angle measuring device is assembled on the side of the synchronous bracket and connected to the synchronous bidirectional lead screw 41; the lead screw angle measuring device and the synchronous drive motor 49 are respectively electrically connected to the control device to quantitatively control the lateral movement stroke of the threading needle 31 and the conductive rubber pad 502. A U-shaped groove 29 is provided on the back of the drilling lifting seat 2, and a travel trigger rod 291 is provided on the rear side of the drilling assembly 20 located on one side of the U-shaped groove 29. The travel trigger rod 291 is movably arranged in the U-shaped groove 29 and protrudes from the back of the drilling lifting seat 2; the two ends of the U-shaped groove 29 are respectively provided with hole spacing adjustment travel switches 4004, and the travel trigger rod 291 is respectively triggered and cooperated with the hole spacing adjustment travel switches 4004 on both sides to limit the adjustment movement stop points of the maximum hole spacing and the minimum hole spacing of the drilling assemblies 20 on both sides to avoid over-adjustment.

[0029] Specifically, a drilling lifting travel switch 4005 is respectively provided on the top and the bottom of the drilling lifting seat 2, and the drilling lifting travel switch 4005 is triggered and coordinated with the corresponding parts of the frame respectively.

[0030] Specifically, the hole spacing adjustment drive device and the synchronous drive device respectively include a control motor, a bidirectional lead screw and an angular measurement structure, wherein the angular measurement structure includes a trigger turntable 91 and an infrared photoelectric switch 92, the trigger turntable 91 is coaxially installed on the end of the bidirectional lead screw, and a plurality of trigger units are arranged on the edge of the trigger turntable 91, and each trigger unit is arranged at intervals along the circumferential direction; the infrared photoelectric switch 92 is fixed on one side of the trigger turntable 91, and each trigger unit is triggered and cooperated with the infrared photoelectric switch 92 in turn, and the infrared photoelectric switch 92 and the control motor are electrically connected to the control device respectively.

[0031] Specifically, the infrared photoelectric switch 92 has a transmitting end and a receiving end, a trigger space is formed between the transmitting end and the receiving end, and the trigger turntable 91 is located between the transmitting end and the receiving end; the trigger unit is set as a leak hole 910 that passes through the trigger turntable 91, and the movement trajectory of each leak hole 910 passes through the trigger space respectively. When the leak hole 910 passes through the trigger space, the receiving end receives a light signal from the transmitting end and performs an angular measurement. The angular interval between the center points of two adjacent leak holes 910 is 5 degrees to 10 degrees; the thread interval of the bidirectional screw is 0.2mm-1mm, and the matching clearance between the bidirectional screw and the screw pair is 20μm-60μm.

[0032] The drill 21, the threading needle 31 and the conductive rubber pad 502 are driven by the bidirectional screw to perform synchronous spacing adjustment movements, thereby realizing stepless hole spacing adjustment of the binding machine, providing users with more specifications of binding hole spacing, and improving the binding quality; by controlling the rotation angle of the bidirectional screw, the adjustment of the binding hole spacing can be quantitatively controlled synchronously up and down, which has the advantage of high hole spacing control accuracy, can further improve the control accuracy of the binding hole spacing of the binding machine, and bring users more diverse customized choices.

[0033] The principle is that the control device receives an input instruction for the hole spacing adjustment amount; the rotation angle of the bidirectional screw and the number of triggering times of the infrared photoelectric switch 92 are calculated according to the input instruction; after the infrared photoelectric switch 92 is triggered to reach the target amount, the rotation drive of the bidirectional screw for the target angle is completed, thereby completing the quantitative hole spacing adjustment.

[0034] This angle measurement structure has the characteristics of low preparation cost, high stability and high precision, and can further improve the hole spacing adjustment accuracy and working stability of the binding machine.

[0035] Specifically, a wire feeding guide hole 403 is provided on the top of the synchronous seat 40 and passes through the top and bottom. The wire feeding guide hole 403 matches the threading needle 31. Each threading needle 31 is respectively matched with the wire feeding guide hole 403 of the corresponding synchronous seat 40 to improve the working stability of the threading needle 31.

[0036] Specifically, each synchronization seat 40 is respectively provided with a horizontally penetrating positioning groove 404 on the top, and the positioning groove 404 passes through the wire feeding guide hole 403, and the width of the positioning groove 404 is smaller than the width of the wire feeding guide hole 403; the table top of the binding platform 1 is provided with a wire release groove 10, and each positioning groove 404 is respectively located directly below the wire release groove 10 and aligned therewith.

[0037] The synchronous seat 40 is provided with a wire feeding guide hole 403 and a positioning wire groove 404 structure, which can improve the working stability of the threading needle 31. Under the positioning auxiliary effect of the positioning wire groove 404, the success rate of hooking the thread of the threading needle 31 can be further improved, thereby improving the working stability of the equipment.

[0038] Specifically, an assembly portion 501 is provided at the bottom of the rubber pad assembly 50, and the assembly portion has two assembly holes; the rubber pad drive seat 51 is provided with two rubber pad rods 52, and the rubber pad assembly 50 is slidably assembled on the rubber pad rods 52 through the assembly holes to realize its lateral sliding setting; the rubber pad drive device includes a rubber pad drive motor 55, a rubber pad drive gear 54 and a rubber pad drive rack 53, and the rubber pad drive motor 55 is fixed to the frame; the rubber pad drive gear 54 is installed on the output shaft of the rubber pad drive motor 55; the rubber pad drive rack 53 is fixedly connected to the rubber pad drive seat 51 or any one of the rubber pad assemblies 50, and the rubber pad drive rack 53 is meshed with the rubber pad drive gear 54, and a rubber pad travel switch 4003 is respectively provided on the front and rear sides of the rubber pad drive seat 51, and the rubber pad travel switch 4003 cooperates with the rubber pad drive seat 51 to trigger.

[0039] Specifically, a threading lifting slide 304 is provided on the left and right sides of the threading lifting seat 301, and threading seat slide rods 303 are provided on both sides of the bottom of the frame, respectively. The threading lifting slides 304 are slidably sleeved on the corresponding threading seat slide rods 303; the threading lifting seat 301 is provided with two needle seat slide rods 302, and each needle threading assembly 30 is slidably assembled on the needle seat slide rod 302, and the needle threading assembly 30 located in the middle is fixedly connected to the threading lifting seat 301; the threading drive device includes a threading drive motor 307, a threading drive motor 308, a threading drive motor 309, a threading drive motor 301, and a threading drive motor 301. The driving gear 306 and the threading driving rack 305, and the threading driving motor 307 are fixed to the frame; the threading driving gear 306 is installed on the output shaft of the threading driving motor 307; the threading driving rack 305 is fixed to the threading lifting seat 301 or any one of the needle threading components 30, and the threading driving rack 305 is meshed and connected to the threading driving rack 305, and a threading travel switch 4002 is respectively provided on the front and rear sides of the threading lifting seat 301, and the threading travel switch 4002 cooperates with the threading lifting seat 301 to trigger.

[0040] Specifically, a paper scrap collection box 24 is installed on the front side of the drilling lifting seat 2; the drilling assembly 20 includes a drill seat 221 that is movably arranged in a transverse direction, a drill drive motor 22, a drill 21, a transmission gear set, a drill drive cylinder 226 and a paper scrap channel member 23, the drill seat 221 is movably installed on the drilling lifting seat 2; the drill drive motor 22 is fixed to the drill seat 221; the transmission gear set is rotatably installed inside the drill seat 221, and the input end of the transmission gear set is connected to the output shaft of the drill drive motor 22; the drill drive cylinder 226 is rotatably installed inside the drill seat 221, and a paper scrap discharge port is provided on the top of the drill drive cylinder 226. The drill bit 21 is coaxially fixed to the bottom end of the drill bit transmission cylinder 226; a scrap guide slope 2210 is formed on the front side of the drill bit seat 221, the bottom edge of the scrap guide slope 2210 is close to the scrap collecting box 24 and higher than the opening of the scrap collecting box 24, and the scrap discharge pipe protrudes from the scrap guide slope 2210 of the drill bit seat 221; the scrap channel member 23 is semi-enclosed, the scrap channel member 23 is fixed to the top of the drill bit seat 221, and covers the scrap guide slope 2210 and the protruding part of the scrap discharge pipe, and the scrap channel member 23 and the scrap guide slope 2210 surround to form a scrap discharge channel 230.

[0041] This structure enables the paper scraps discharged through the paper scrap discharge pipe to fall into the paper scrap collection box 24 under the guidance of the paper scrap guide slope 2210 to complete the collection, thereby ensuring the independent operation of the drilling assembly 20 and the realization of the hole spacing adjustment and paper scrap collection functions.

[0042] Specifically, the transmission gear set includes a drilling drive gear 1 223 and a drilling drive gear 2 224 that are meshed with each other, and the drilling drive gear 1 223 and the drilling drive gear 2 224 constitute a reduction transmission gear set; wherein, the drill drive cylinder 226 is provided with a passive gear 225, and the passive gear 225 is meshed and connected to the drilling drive gear 2 224; the output shaft of the drill drive motor 22 is provided with a threaded gear 222, and the threaded gear 222 is meshed and connected to the drilling drive gear 1 223.

[0043] Specifically, a press board 201 is movably provided below the drilling lifting seat 2, and a movable connecting rod 203 is installed on both sides of the press board 201. The tops of the two movable connecting rods 203 are respectively movably plugged into the drilling lifting seat 2, and are respectively sleeved with a compression spring 204. The upper end of the compression spring 204 is connected to the drilling lifting seat 2, and the lower end is connected to the press board 201; the press board 201 is provided with a hollow drill avoidance groove 202, and the drill avoidance groove 202 is extended in the horizontal direction. The press board 201 with the drill avoidance groove 202 can meet the full range of hole spacing adjustment of the drills 21 on both sides, and avoid hard collision between the drill 21 and the press board 201.

[0044] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A three-hole binding machine with adjustable hole spacing, comprising a drilling device, a conductive rubber pad (502) device, a threading device, a frame and a binding platform (1), wherein the binding platform (1) is arranged in the middle of the frame, the drilling device is arranged above the binding platform (1), the conductive rubber pad (502) device is arranged on the binding platform (1), and the threading device is arranged below the binding platform (1), characterized in that: The drilling device comprises a drilling lifting drive device, a drilling lifting seat (2), and three drilling assemblies (20) arranged at intervals. The drilling lifting seat (2) is mounted on a frame in an up-and-down sliding manner and is connected to the drilling lifting drive device by transmission. A drill (21) is provided at the bottom of the drilling assembly (20). At least two drilling assemblies (20) are mounted on the drilling lifting seat (2) in a transverse sliding manner. Two adjacent drilling assemblies (20) move toward or away from each other to form two adjustable drilling intervals. A synchronous adjustment device is also provided below the binding platform (1), and the synchronous adjustment device comprises three synchronous seats (40) arranged at intervals, at least two of the synchronous seats (40) are installed on the frame in a transverse sliding manner, each synchronous seat (40) is aligned with the corresponding drilling assembly (20) in the upper and lower directions, and cooperates with the drilling assembly (20) in synchronous movement, and the front side of the synchronous seat (40) is provided with a first linkage groove (401) extending in the vertical direction, and the top is provided with a second linkage groove (402) extending in the front-back direction horizontally; The threading device comprises a threading drive device, a threading lifting seat (301) and three needle threading assemblies (30) arranged at intervals. The threading lifting seat (301) is movably assembled on a frame up and down and is transmission-connected to the threading drive device; a threading needle (31) is provided on the top of the threading assembly (30), and each threading assembly (30) is slidably connected to the threading lifting seat (301) and movably connected to the first linkage groove (401) of the corresponding synchronization seat (40) to achieve synchronization alignment of each threading needle (31) with a vertical guide and a corresponding drill (21); The conductive rubber pad (502) device comprises a rubber pad driving device, a rubber pad driving seat (51) and three rubber pad assemblies (50) arranged at intervals. The rubber pad driving seat (51) is horizontally movably mounted on a frame along the front-back direction and is transmission-connected to the rubber pad driving device. A conductive rubber pad (502) is provided on the top surface of the rubber pad assembly (50). Each rubber pad assembly (50) is slidably connected to the rubber pad driving seat (51) and movably engaged with the second linkage groove (402) of the corresponding synchronization seat (40) so as to realize synchronous alignment of the conductive rubber pad (502) of each rubber pad assembly (50) with the corresponding drill bit (21).

2. The three-hole binding machine with adjustable hole spacing according to claim 1, characterized in that: The drilling lifting seat (2) is provided with a hole spacing adjustment track extending transversely, the drilling assembly (20) located in the middle is fixedly mounted on the drilling lifting seat (2), and the drilling assemblies (20) located on both sides are respectively slidably mounted on the hole spacing adjustment track and are respectively connected to a hole spacing adjustment driving device, and the two drilling assemblies (20) respectively move toward or away from the drilling assembly (20) located in the middle; A synchronous bracket is provided below the binding platform (1), and the synchronous bracket is provided with a synchronous rail extending transversely. The synchronous seat (40) located in the middle is fixedly installed on the synchronous bracket and aligned up and down with the fixedly installed drilling assembly (20); the synchronous seats (40) on both sides are respectively slidably installed on the synchronous guide rails and are respectively connected to synchronous driving devices. The two synchronous seats (40) are respectively aligned up and down with the corresponding drilling assemblies (20).

3. The three-hole binding machine with adjustable hole spacing according to claim 2, characterized in that: A control device is also provided; the hole pitch adjustment drive device comprises a hole pitch adjustment drive motor, a hole pitch adjustment bidirectional screw rod (26) and a first screw rod angle measurement device, the hole pitch adjustment drive motor is fixedly mounted on the drilling lifting seat (2); the hole pitch adjustment bidirectional screw rod (26) is rotatably mounted on the drilling lifting seat (2) and is transmission-connected to the hole pitch adjustment drive motor, wherein the left and right drilling assemblies (20) are respectively equipped with screw rod pairs and are respectively connected to the two side sections of the hole pitch adjustment bidirectional screw rod (26) through screw rod pair threads; the screw rod angle measurement device is mounted on the side of the drilling lifting seat (2) and is connected to the hole pitch adjustment bidirectional screw rod (26); the screw rod angle measurement device and the hole pitch adjustment drive motor are respectively electrically connected to the control device to quantitatively control the size adjustment of the drilling interval; The synchronous drive device comprises a synchronous drive motor (49), a synchronous bidirectional screw (41) and a second screw angle measurement device, wherein the synchronous drive motor (49) is fixedly mounted on a synchronous bracket; the synchronous bidirectional screw (41) is rotatably mounted on the synchronous bracket and is transmission-connected to the synchronous drive motor (49), wherein the synchronous seats (40) on the left and right sides are respectively equipped with another screw pair, and are respectively connected to the two side sections of the synchronous bidirectional screw (41) through the screw pair threads; the second screw angle measurement device is mounted on the side of the synchronous bracket and is connected to the synchronous bidirectional screw (41); the screw angle measurement device and the synchronous drive motor (49) are respectively electrically connected to a control device to quantitatively control the lateral travel of the threading needle (31) and the conductive rubber pad (502).

4. The three-hole binding machine with adjustable hole spacing according to claim 3, characterized in that: The hole spacing adjustment drive device and the synchronous drive device respectively comprise a control motor, a bidirectional screw and an angle measurement structure, wherein the angle measurement structure comprises a trigger turntable (91) and an infrared photoelectric switch (92), the trigger turntable (91) is coaxially mounted on the end of the bidirectional screw, a plurality of trigger units are arranged on the edge of the trigger turntable (91), and each trigger unit is arranged at intervals along the circumferential direction; the infrared photoelectric switch (92) is fixed on one side of the trigger turntable (91), and each trigger unit is triggered and matched with the infrared photoelectric switch (92) in turn. The infrared photoelectric switch (92) and the control motor are electrically connected to the control device respectively.

5. The three-hole binding machine with adjustable hole spacing according to claim 4, characterized in that: The infrared photoelectric switch (92) has a transmitting end and a receiving end, a trigger space is formed between the transmitting end and the receiving end, and the trigger turntable (91) is located between the transmitting end and the receiving end; the trigger unit is set as a leak hole (910) penetrating the trigger turntable (91), and the movement trajectory of each leak hole (910) passes through the trigger space respectively. When the leak hole (910) passes through the trigger space, the receiving end receives a light signal from the transmitting end, performs an angle measurement, and sends a measurement signal to the control device at the same time. After receiving the measurement signal, the control device performs a distance calculation. The matching clearance between the bidirectional screw and the screw pair is 20 μm-60 μm.

6. The three-hole binding machine with adjustable hole spacing according to claim 1, characterized in that: The front side of the drilling lifting seat (2) is equipped with a paper scrap collection box (24); The drilling assembly (20) comprises a drill seat (221) which is arranged to be movable in a transverse direction, a drill drive motor (22), the drill (21), a transmission gear set, a drill drive cylinder (226) and a paper scrap channel member (23). The drill seat (221) is movably mounted on the drilling lifting seat (2); the drill drive motor (22) is fixed on the drill seat (221); the transmission gear set is rotatably mounted inside the drill seat (221), and the input end of the transmission gear set is connected to the output shaft of the drill drive motor (22); the drill drive cylinder (226) is rotatably mounted inside the drill seat (221), the top of the drill drive cylinder (226) is provided with a paper scrap discharge pipe, and the drill (21) is coaxially fixed to the bottom end of the drill drive cylinder (226); the front side of the drill seat (221) is formed with a paper scrap guide slope ( 2210), the bottom edge of the scrap guide slope (2210) is close to the scrap collection box (24) and higher than the opening of the scrap collection box (24), and the scrap discharge pipe protrudes from the scrap guide slope (2210) of the drill seat (221); the scrap channel member (23) is semi-enclosed, the scrap channel member (23) is fixed to the top of the drill seat (221) and covers the scrap guide slope (2210) and the protruding part of the scrap discharge pipe, and the scrap channel member (23) and the scrap guide slope (2210) surround to form a scrap discharge channel (230).

7. The three-hole binding machine with adjustable hole spacing according to claim 1, characterized in that: The top of the synchronous seat (40) is provided with a wire feeding guide hole (403) which passes through from top to bottom. The wire feeding guide hole (403) matches the threading needle (31). Each threading needle (31) is clearance-matched with the wire feeding guide hole (403) of the corresponding synchronous seat (40) to improve the working stability of the threading needle (31). Wherein, each of the synchronous seats (40) is provided with a positioning wire groove (404) which is arranged transversely therethrough on the top, and the positioning wire groove (404) passes through the wire feeding guide hole (403); the table top of the binding platform (1) is provided with a wire release groove (10), and each positioning wire groove (404) is located directly below the wire release groove (10) and is aligned therewith.

8. The three-hole binding machine with adjustable hole spacing according to claim 1, characterized in that: The rubber pad driving device comprises a rubber pad driving motor (55), a rubber pad driving gear (54) and a rubber pad driving rack (53); the rubber pad driving motor (55) is fixed to the frame; the rubber pad driving gear (54) is installed on the output shaft of the rubber pad driving motor (55); the rubber pad driving rack (53) is fixed to the rubber pad driving seat (51) or any one of the rubber pad assemblies (50), and the rubber pad driving rack (53) is meshed and connected to the rubber pad driving gear (54). A rubber pad travel switch (4003) is respectively provided on the front and rear sides of the rubber pad driving seat (51), and the rubber pad travel switch (4003) is triggered and matched with the rubber pad driving seat (51).

9. The three-hole binding machine with adjustable hole spacing according to claim 1, characterized in that: The threading drive device comprises a threading drive motor (307), a threading drive gear (306) and a threading drive rack (305); the threading drive motor (307) is fixed to the frame; the threading drive gear (306) is installed on the output shaft of the threading drive motor (307); the threading drive rack (305) is fixed to the threading lifting seat (301) or any one of the needle threading assemblies (30), and the threading drive rack (305) is meshed and connected to the threading drive rack (305). A threading travel switch (4002) is respectively arranged on the front and rear sides of the threading lifting seat (301), and the threading travel switch (4002) is triggered and matched with the threading lifting seat (301).

10. The three-hole binding machine with adjustable hole spacing according to claim 1, characterized in that: A press paper (201) is movably provided below the drilling lifting seat (2), and a movable connecting rod (203) is installed on both sides of the press paper (201). The tops of the two movable connecting rods (203) are respectively movably plugged into the drilling lifting seat (2) and are respectively sleeved with a compression spring (204). The upper end of the compression spring (204) is connected to the drilling lifting seat (2), and the lower end is connected to the press paper (201); The press paper (201) is provided with a hollow drill avoidance groove (202), and the drill avoidance groove (202) is extended in the transverse direction.

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