Thread binding type binding machine with improved paper pressing device

Abstract

The utility model discloses a thread binding type binding machine with an improved paper pressing device, the paper pressing device comprises a paper pressing plate, a locking rod, a locking swing block, a locking elastic reset piece and an unlocking pull rope, the paper pressing plate is installed between a drilling sliding seat and a binding platform in a sliding mode, the locking rod is vertically installed on the paper pressing plate, a first end of the locking swing block is hinged to a machine frame, and a second end of the locking swing block is hinged to a second end of the locking elastic reset piece. A locking hole vertically penetrating through the locking swing block is formed in the middle of the locking swing block, the locking rod penetrates through the locking hole, the locking elastic reset piece is arranged at the second end of the locking swing block, the upper end of the unlocking pull rope is connected with the second end of the locking swing block, and the lower end of the unlocking pull rope penetrates through the binding platform to be in transmission connection with the threading driving mechanism. The unlocking pull rope is tensioned or loosened through the threading driving mechanism, so that the locking swing block is driven to rotate to achieve the purposes of unlocking and locking, manual unlocking is not needed, use is convenient, an independent driving mechanism is not needed, the structure is simple, cost is low, binding objects can be fixed after drilling is completed, and the threading success rate is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of thread-bound binding machines, in particular to a thread-bound binding machine with an improved paper pressing device. Background Art

[0002] Thread-binding machines are different from hot-press riveting binding machines. After drilling is completed, the thread-binding machine needs the drilling device to rise and reset, and the threading device rises to pass the threading needle through the binding hole. In order to keep the binding fixed, the paper pressing device needs to be continuously pressed against the binding when threading. Existing thread-binding machines mostly use an independent drive mechanism to drive the paper pressing device separately. This method has a complex structure, high cost, and requires a large installation space, resulting in a large volume. Some also use the same drive method as the hot-press riveting binding machine, driving the paper pressing device to fall together with the drilling device, and adding a locking mechanism. When the drilling device rises, the locking mechanism keeps the paper pressing device locked, so as to maintain the paper pressing state when threading. After threading is completed, the paper pressing device is released by manual unlocking. This method cannot automatically release the paper pressing device for unlocking and resetting, which is inconvenient to operate, so it is necessary to improve it. Utility Model Content

[0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a thread-bound binding machine with an improved paper pressing device, which can automatically unlock the paper pressing device without manual unlocking, thereby improving ease of use.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a thread-binding machine with an improved paper pressing device, comprising a frame, a drilling device, a threading device and a paper pressing device, a binding platform is provided in the middle of the frame, the drilling device is provided with a drilling slide and a drilling drive mechanism, the drilling slide is slidably mounted on the upper part of the frame, the drilling drive mechanism is transmission-connected to the drilling slide, the threading device is provided with a threading slide and a threading drive mechanism, the threading slide is slidably mounted on the lower part of the frame, the threading drive mechanism is transmission-connected to the threading slide, and the paper pressing device is provided on the binding platform. Between the drilling device, the paper pressing device includes a paper pressing board, a locking rod, a locking pendulum block, a locking elastic reset part and an unlocking rope. The paper pressing board is slidably installed between the drilling slide and the binding platform. The locking rod is vertically installed on the paper pressing board. The first end of the locking pendulum block is hinged to the frame. A locking hole that vertically penetrates the locking pendulum block is opened in the middle part of the locking pendulum block. The locking rod is inserted into the locking hole. The locking elastic reset part is arranged at the second end of the locking pendulum block. The upper end of the unlocking rope is connected to the second end of the locking pendulum block, and the lower end of the unlocking rope passes through the binding platform and is transmission-connected to the threading drive mechanism.

[0005] In a further technical solution, the threading drive mechanism includes a threading drive motor and a fan-shaped threading gear, the threading drive motor is fixedly mounted on the lower part of the frame, the fan-shaped threading gear is fixedly mounted on the output shaft of the threading drive motor, the threading slide is provided with a threading rack, the lower end of the unlocking pull rope is provided with a lower connecting part, the lower connecting part is rotatably mounted on the outer side surface of the fan-shaped threading gear and is adjacent to the side of the fan-shaped threading gear facing the threading rack, and the fan-shaped threading gear is transmission-connected to the threading rack;

[0006] The paper pressing device is provided with a locked state and an unlocked state.

[0007] In the unlocked state, the fan-shaped threading gear is separated from the threading rack, the lower connecting part moves downward to pull the unlocking rope to tighten, the locking pendulum block rotates downward, the locking hole and the locking rod are coaxially arranged, and there is a sliding gap between the locking hole and the locking rod;

[0008] In the locked state, the lower connecting portion moves upward to loosen the unlocking rope, the locking pendulum block rotates upward, and the outer side wall of the locking rod abuts against the inner side wall of the locking hole.

[0009] In a further technical solution, the binding platform is provided with at least two paper pressing guide posts, the lower part of the paper pressing guide posts is fixedly connected to the binding platform, the drilled slide is vertically provided with at least two paper pressing perforations, the upper parts of the two paper pressing guide posts are respectively penetrated into the two paper pressing perforations, the paper pressing board is slidably installed on the two paper pressing guide posts, and the paper pressing device is also provided with at least one paper pressing elastic reset part and at least one paper pushing spring, the paper pushing spring is sleeved on the paper pressing guide post, the upper end of the paper pushing spring presses against the drilled slide, and the lower end of the paper pushing spring presses against the paper pressing board, one end of the paper pressing elastic reset part is connected to the paper pressing board, and the other end is connected to the frame to drive the paper pressing board to reset upward.

[0010] In a further technical solution, the paper pressing board is provided with at least two linear bearings, and the two linear bearings are respectively slidably connected to the corresponding paper pressing guide pillars.

[0011] In a further technical solution, a locking mounting seat is fixedly installed on the upper end surface of the frame, the first end of the locking pendulum block is hinged to the locking mounting seat, the lower end of the locking rod is fixedly installed on the upper part of the pressing paper board, the upper end of the locking rod passes through the frame and is inserted into the locking hole, and the frame is fixedly installed with a spring mounting sleeve with an upward opening, and a rope threading hole is provided at the lower part of the spring mounting sleeve. The locking elastic return part includes a locking spring, and the locking spring is arranged in the spring mounting sleeve. The upper end of the locking spring presses against the locking pendulum block and the lower end presses against the lower inner wall of the spring mounting sleeve. The upper end of the unlocking rope passes through the rope threading hole and the locking spring in turn and is connected with the locking pendulum block. The paper pressing elastic return part includes a paper pressing tension spring, and the upper end of the paper pressing tension spring is fixedly connected to the frame and the lower end is fixedly connected to the pressing paper board.

[0012] In a further technical solution, a limiting portion is provided at the upper end of the unlocking rope, a rope limiting hole is provided at the second end of the locking pendulum block, the unlocking rope is passed through the rope limiting hole, and the limiting portion is located above the locking pendulum block and cooperates with the locking pendulum block limit.

[0013] In a further technical solution, the thread-binding machine is provided with a control circuit, the drilling drive mechanism and the threading drive motor are electrically connected to the control circuit respectively, a locking trigger switch is provided at the lower part of the frame, a trigger roller is provided between the threading drive motor and the fan-shaped threading gear, the trigger roller is fixedly mounted on the output shaft of the threading drive motor, an unlocking trigger protrusion, a first locking trigger protrusion and a second locking trigger protrusion are provided on the outer circumference of the trigger roller at intervals along the circumferential direction, the unlocking trigger protrusion and the lower end portion of the unlocking pull rope are symmetrically arranged along the output shaft of the threading drive motor, the first locking trigger protrusion is provided on one side adjacent to the lower end portion of the unlocking pull rope, the second locking trigger protrusion is provided between the unlocking trigger protrusion and the first locking trigger protrusion and is located on the rear side of the fan-shaped threading gear, the unlocking trigger protrusion, the first locking trigger protrusion and the second locking trigger protrusion are respectively triggered and cooperated with the locking trigger switch;

[0014] In the unlocked state, the unlocking triggering protrusion is pressed against the locking triggering switch, and in the locked state, the first locking triggering protrusion and the second locking triggering protrusion are pressed against the locking triggering switch respectively.

[0015] In a further technical solution, the frame includes a door-type upper frame, a lower box body, an upper shell and a rear cover plate, the binding platform is arranged on the upper end surface of the lower box body, the door-type upper frame is fixedly installed on the binding platform, the lower box body cover is arranged on the door-type upper frame, the upper part of the rear cover plate is fixedly connected to the upper shell body, the lower part of the lower box body is fixedly connected to the rear cover plate, the drilling slide is slidably installed on the door-type upper frame, the threading slide is slidably installed in the lower box body, a drilling mounting plate is provided in the middle of the door-type upper frame, the drilling drive mechanism is fixedly installed on the drilling mounting plate, the bottom of the lower box body is provided with a base plate, the upper part of the base plate is provided with a threading mounting plate, and the threading drive mechanism is provided on the threading mounting plate.

[0016] In a further technical solution, a binding switching mechanism is provided in the lower box body, and the binding switching mechanism includes a binding slide, a binding rope, a switching seesaw, a switching reset spring and a plurality of conductive rubber pads. The binding slide is slidably installed on the binding platform, and the middle part of the switching seesaw is pivotally connected to the upper part of the door-type upper shelf. The front end of the switching seesaw cooperates with the drilling slide, and the rear end of the switching seesaw is connected to the upper end of the binding rope, and the lower end of the binding rope is connected to the binding slide. The conductive rubber pad is rotatably installed on the binding slide, and the drilling slide is provided with a plurality of drill bits at intervals, and each conductive rubber pad is located directly below each drill bit, and each conductive rubber pad is electrically connected to the control circuit. A reset trigger switch is also provided on the upper part of the door-type upper shelf, and the reset trigger switch cooperates with the drilling slide trigger, and the control circuit is electrically connected to the reset trigger switch.

[0017] In a further technical solution, a threading locking mechanism is provided on one side of the base plate, and the threading locking mechanism includes a locking mounting plate, a locking pin and a pin return spring. The locking pin is slidably installed on the locking mounting plate, and the pin return spring is arranged between the locking pin and the locking mounting plate. A locking slot is opened on one side of the threading slide, and the locking pin is plugged into the locking slot.

[0018] After adopting the above structure, the advantages of the present invention compared with the prior art are: the unlocking rope is pulled by the threading drive mechanism, thereby driving the locking pendulum block to rotate so that the locking rod and the locking hole are coaxially arranged, and the locking rod can move relative to the locking pendulum block. When drilling, the drilling drive mechanism drives the drilling slide to descend, and drives the paper pressing plate to move downward to press the paper. After drilling is completed, before the drilling slide is reset upward, the unlocking rope is released by the threading drive mechanism, and under the action of the locking elastic reset part, the locking pendulum block is rotated so that the locking rod and the axis of the locking hole intersect, and the locking rod is pressed against the inner wall of the locking hole, thereby completing the locking. When threading, the threading drive mechanism drives the threading slide to move upward, and the unlocking rope always remains loose. The unlocking rope is released while the threading rack is engaged when the threading is completed, and is separated from the threading rack after the threading is completed, so that the threading slide is reset downward, and the unlocking rope is tightened again to unlock the paper pressing plate and reset the paper pressing plate upward. The structure is simple, the cost is low, the reliability and stability are high, and the failure rate is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 It is a structural diagram of the utility model;

[0021] Figure 2 is a cross-sectional view of the present invention in the unlocked state;

[0022] Figure 3 This is a cross-sectional view of the drilling slide of the utility model after completing reset after drilling;

[0023] Figure 4 It is a cross-sectional view of the present invention when drilling;

[0024] Figure 5 This is an exploded view of the paper pressing device of the present utility model.

[0025] In the picture:

[0026] 1 drilling device, 11 drilling slide, 12 drilling drive mechanism, 13 drill cutter;

[0027] 2 threading device, 21 threading slide, 22 threading rack, 23 threading drive mechanism, 231 threading drive motor, 232 fan-shaped threading gear;

[0028] 3 Paper pressing device, 31 paper pressing board, 32 locking rod, 33 locking mounting seat, 34 spring mounting sleeve, 35 locking pendulum block, 351 locking hole, 352 rope limiting hole, 36 locking elastic reset member, 37 unlocking rope, 371 limiting portion, 372 lower connecting portion, 381 paper pressing elastic reset member, 382 paper pushing spring, 39 linear bearing, 41 locking trigger switch, 42 trigger roller, 421 unlocking trigger protrusion, 422 first locking trigger protrusion, 423 second locking trigger protrusion;

[0029] 51 binding slide plate, 52 conductive rubber pad, 53 switching rocker;

[0030] 61 locking mounting plate, 62 locking pin;

[0031] 71 door-type upper rack, 711 paper pressing guide column, 712 drilling installation plate, 72 lower box body, 721 binding platform, 722 bottom plate, 723 threading installation plate, 73 upper shell, 74 rear cover. DETAILED DESCRIPTION

[0032] The following are merely preferred embodiments of the present invention and do not limit the scope of protection of the present invention.

[0033] A thread-bound binding machine with an improved paper pressing device, such as Figures 1 to 5As shown, it includes a frame, a drilling device 1, a threading device 2 and a paper pressing device 3. A binding platform 721 is provided in the middle of the frame. The drilling device 1 is provided with a drilling slide 11 and a drilling drive mechanism 12. The drilling slide 11 is slidably installed on the upper part of the frame. The drilling drive mechanism 12 is transmission-connected to the drilling slide 11. The threading device 2 is provided with a threading slide 21 and a threading drive mechanism 23. The threading slide 21 is slidably installed on the lower part of the frame. The threading drive mechanism 23 is transmission-connected to the threading slide 21. The paper pressing device 3 is provided between the binding platform 721 and the drilling device 1. The paper pressing device 3 includes a paper pressing board 31, a locking rod 32, a locking rod 33, and a locking rod 34. The stop block 35, the locking elastic reset member 36 and the unlocking rope 37, the paper pressing plate 31 are slidably installed between the drilling slide 11 and the binding platform 721, the locking rod 32 is vertically installed on the paper pressing plate 31, the first end of the locking pendulum block 35 is hinged to the frame, and a locking hole 351 vertically penetrating the locking pendulum block 35 is opened in the middle of the locking pendulum block 35, the locking rod 32 is passed through the locking hole 351, the locking elastic reset member 36 is arranged at the second end of the locking pendulum block 35, the upper end of the unlocking rope 37 is connected to the second end of the locking pendulum block 35, and the lower end of the unlocking rope 37 passes through the binding platform 721 and is transmission-connected to the threading drive mechanism 23.

[0034] After completing the binding, traditional thread-binding machines often need to manually unlock the paper pressing device, which cannot be unlocked automatically, which is inconvenient to operate, or an independent driving mechanism is set to drive the paper pressing device, which has a complex structure and high cost. Some of them are linked to unlock the paper pressing device when the drilling device is reset upward, which causes the paper pressing device to be unlocked and reset before threading is completed, resulting in a low threading success rate. The utility model pulls the unlocking rope 37 through the threading drive mechanism, thereby driving the locking pendulum block 35 to rotate so that the locking rod 32 is coaxially arranged with the locking hole 351, and the locking rod 351 can move relative to the locking pendulum block 35. When drilling, the drilling drive mechanism 12 drives the drilling slide 11 to descend, and drives the paper pressing board 31 to move downward to press the paper, completing the drilling. After the hole is drilled, before the drilling slide 11 resets upward, the unlocking pull rope 37 is released by the threading drive mechanism, and the locking pendulum block 35 is rotated under the action of the locking elastic reset member 36 to make the locking rod 32 intersect with the axis of the locking hole 351, and the locking rod 32 is pressed against the inner wall of the locking hole 351, thereby completing the locking. When threading, the threading drive mechanism drives the threading slide 21 to move upward, and the unlocking pull rope 37 always remains in a relaxed state. When threading is completed, the threading drive mechanism tightens the unlocking pull rope 37 again to unlock the paper pressing plate 31 for reset. No manual unlocking is required, the operation is convenient, and there is no need to set up an independent unlocking drive mechanism. The structure is simple and the cost is low. The paper pressing plate 31 can always be locked during threading, thereby improving the success rate of threading.

[0035] Specifically, the threading drive mechanism 23 includes a threading drive motor 231 and a fan-shaped threading gear 232. The threading drive motor 231 is fixedly mounted on the lower part of the frame. The fan-shaped threading gear 232 is fixedly mounted on the output shaft of the threading drive motor 231. The threading slide 21 is provided with a threading rack 22. The lower end of the unlocking pull rope 37 is provided with a lower connecting portion 372. The lower connecting portion 372 is rotatably mounted on the outer side surface of the fan-shaped threading gear 232 and is adjacent to the side of the fan-shaped threading gear 232 facing the threading rack 22. The gear 232 is in transmission connection with the threading rack 22; the threading drive mechanism is provided with a fan-shaped threading gear 232, which separates from the threading rack 22 when the paper pressing plate 31 is locked. When threading, the unlocking pull rope 37 is released while the threading rack 22 is engaged. After threading is completed, it is separated from the threading rack 22, so that the threading slide 21 is reset downward, and the unlocking pull rope 37 is tightened again, thereby unlocking the paper pressing plate 31 and resetting the paper pressing plate 31 upward. It has a simple structure, low cost, high reliability and stability, and low failure rate.

[0036] The paper pressing device 3 is provided with a locked state and an unlocked state. In the unlocked state, Figure 2 As shown, the fan-shaped threading gear 232 is separated from the threading rack 22, the lower connecting portion 372 moves downward to pull the unlocking rope 37 to tighten, the locking pendulum block 35 rotates downward, and the locking hole 351 is coaxially arranged with the locking rod 32, with a sliding gap between the locking hole 351 and the locking rod 32;

[0037] In the locked state, if Figure 3 and Figure 4 As shown, the lower connecting portion 372 moves upward to loosen the unlocking pull rope 37 , the locking pendulum block 35 rotates upward, and the outer side wall of the locking rod 32 abuts against the inner side wall of the locking hole 351 .

[0038] Specifically, the binding platform 721 is provided with at least two paper pressing guide posts 711, the lower part of the paper pressing guide posts 711 is fixedly connected to the binding platform 721, the drilling slide 11 is vertically opened with at least two paper pressing perforations, the upper parts of the two paper pressing guide posts 711 are respectively penetrated into the two paper pressing perforations, the pressing paper board 31 is slidably installed on the two paper pressing guide posts 711, and the paper pressing device 3 is also provided with at least one paper pressing elastic reset member 381 and at least one paper pushing spring 382, the paper pushing spring 382 is sleeved on the paper pressing guide post 711, the upper end of the paper pushing spring 382 is against the drilling slide 11, and the lower end of the paper pushing spring 382 is against the pressing paper board 31, one end of the paper pressing elastic reset member 381 is connected to the pressing paper board 31, and the other end is connected to the frame to realize driving the pressing paper board 31 to reset upward. When the screwdriver bit 37 is unlocked, the screwdriver bit 37 is unlocked and the screwdriver bit 37 is unlocked.

[0039] Specifically, the paper press 31 is provided with at least two linear bearings 39, each of which is slidably connected to a corresponding paper press guide post 711. The linear bearings 39 reduce the friction between the paper press 31 and the paper press guide post 711, making the movement of the paper press 31 smoother, preventing the paper press 31 from tilting when descending, and improving the paper pressing effect.

[0040] Specifically, a locking mounting seat 33 is fixedly installed on the upper end surface of the frame, the first end of the locking pendulum block 35 is hinged to the locking mounting seat 33, the lower end of the locking rod 32 is fixedly installed on the upper part of the pressing paper board 31, the upper end of the locking rod 32 passes through the frame and is inserted into the locking hole 351, and the frame is fixedly installed with a spring mounting sleeve 34 with an upward opening, and a rope threading hole is opened at the lower part of the spring mounting sleeve 34, and the locking elastic return member 36 includes a locking spring, which is arranged in the spring mounting sleeve 34, and the upper end of the locking spring presses against the locking pendulum block 35 and the lower end presses against the lower inner wall of the spring mounting sleeve 34. The upper end of the unlocking rope 37 passes through the rope threading hole and the locking spring in turn and is connected with the locking pendulum block 35, and the paper pressing elastic return member 381 includes a paper pressing tension spring, the upper end of the paper pressing tension spring is fixedly connected to the frame, and the lower end is fixedly connected to the pressing paper board 31. The locking pendulum block 35 is installed on the frame through the locking mounting seat 33, which is convenient for production and assembly. It is set on the upper part of the frame to reduce space occupancy. The locking spring is fixed to the frame through the spring mounting sleeve 34, which is convenient for installation, while reducing the vertical height and reducing the volume. After the drilling is completed, the drilling slide 11 moves upward and resets while pulling the paper pressing spring. The paper pressing spring generates elastic potential energy. When the paper pressing device is unlocked, the elastic force of the paper pressing spring pulls the paper pressing board 31 to reset upward. The paper pressing spring will not occupy the lower space of the paper pressing board 31, so that the paper pressing board 31 can press thinner binding materials.

[0041] Specifically, a limiter 371 is provided at the upper end of the unlocking cord 37. A cord-limiting hole 352 is defined at the second end of the locking pendulum block 35. The unlocking cord 37 is inserted into the cord-limiting hole 352. The limiter 371 is located above the locking pendulum block 35 and engages with the locking pendulum block 35 to limit its position. The unlocking cord 37 is connected to the locking pendulum block 35 via the limiter 371. The unlocking cord 37 is movable relative to the locking pendulum block 35. The unlocking cord 37 is made of a steel wire rope. When released, it relaxes and can pass upward through the locking pendulum block 35, preventing the cord from curling up and improving reliability and stability.

[0042] Specifically, the thread-binding machine is provided with a control circuit, the drilling drive mechanism 12 and the threading drive motor 231 are electrically connected to the control circuit respectively, a locking trigger switch 41 is provided at the lower part of the frame, a trigger roller 42 is provided between the threading drive motor 231 and the fan-shaped threading gear 232, the trigger roller 42 is fixedly mounted on the output shaft of the threading drive motor 231, and the outer circumference of the trigger roller 42 is provided with an unlocking trigger protrusion 421, a first locking trigger protrusion 422 and a second locking trigger protrusion 423 at intervals along the circumferential direction, and the unlocking trigger protrusion 421 and the lower end of the unlocking pull rope 37 are symmetrical along the output axis of the threading drive motor 231 The first locking trigger protrusion 422 is arranged on one side of the lower end portion adjacent to the unlocking pull rope 37, and the second locking trigger protrusion 423 is arranged between the unlocking trigger protrusion 421 and the first locking trigger protrusion 422 and is located on the rear side of the fan-shaped threading gear 232. The unlocking trigger protrusion 421, the first locking trigger protrusion 422 and the second locking trigger protrusion 423 are respectively triggered and cooperated with the locking trigger switch 41; in the unlocking state, the unlocking trigger protrusion 421 is pressed against the locking trigger switch 41, and in the locking state, the first locking trigger protrusion 422 and the second locking trigger protrusion 423 are respectively pressed against the locking trigger switch 41.When drilling, the drilling drive mechanism 12 drives the drilling slide 11 to move downward. At this time, the fan-shaped threading gear 232 is separated from the threading rack 22, and the trigger roller 42 rotates to the position where the unlocking trigger protrusion 421 abuts the locking trigger switch 41, thereby triggering the locking trigger switch 41. The locking trigger switch 41 sends a stop control signal to the control circuit, and the control circuit controls the threading drive motor 231 to stop to keep the paper pressing device unlocked. After the drilling is completed, before the drilling slide 11 moves upward, the control circuit controls the threading drive motor 231 to first drive the fan-shaped threading gear 232 to After the trigger roller 42 rotates, it rotates synchronously to the position where the second locking trigger protrusion 423 presses against the locking trigger switch 41, thereby triggering the locking trigger switch 41. The locking trigger switch 41 sends a stop control signal to the control circuit, and the control circuit controls the threading drive motor 231 to stop. At this time, the unlocking rope 37 is released, and the paper pressing device remains in the locked state. The control circuit starts the drilling drive mechanism 12 while controlling the threading drive motor 231 to stop. The drilling drive mechanism 12 drives the drilling slide 11 to move upward and reset. At this time, the paper pressing board 31 remains pressed against the binding object; the threading drive motor 231 stops. The machine 231 drives the fan-shaped threading gear 232 to continue to rotate backward, so that the trigger roller 42 rotates synchronously to the position where the first locking trigger protrusion 422 abuts the locking trigger switch 41. The locking trigger switch 41 sends a stop control signal to the control circuit. The control circuit controls the threading drive motor 231 to stop. The fan-shaped threading gear 232 engages with the threading rack 22 during the rotation and drives the threading slide 21 to move upward, so that the threading needle installed on the threading slide 21 rises and passes the cord through the binding hole to complete the threading. After the threading is completed, the fan-shaped threading gear 232 continues to move backward, and the fan-shaped threading gear 232 is engaged with the threading rack 22. The gear 232 is separated from the threading rack 22 again, and the threading slide 21 is provided with a tension spring or reset downward by gravity, and the trigger roller 42 rotates synchronously to the position where the unlocking trigger protrusion 421 hits the locking trigger switch 41. The locking trigger switch 41 sends a stop control signal to the control circuit, and the control circuit controls the threading drive motor 231 to stop. At this time, the unlocking rope 37 is tightened to make the paper pressing device enter the unlocked state again, and the paper pressing paper 31 is reset upward under the action of the paper pressing spring, thereby completing a round of binding, and automatically completing the locking and unlocking actions of the paper pressing device without manual operation, which is easy to use.

[0043] Specifically, the frame includes a door-type upper frame 71, a lower box body 72, an upper shell 73 and a rear cover 74. The binding platform 721 is arranged on the upper end surface of the lower box body 72. The door-type upper frame 71 is fixedly installed on the binding platform 721. The lower box body 72 is covered by the door-type upper frame 71. The upper part of the rear cover 74 is fixedly connected to the upper shell 73. The lower part of the lower box body 72 is fixedly connected to the rear cover 74. The drilling slide 11 is slidably installed on the door-type upper frame 71. The threading slide 21 is slidably installed in the lower box body 72. A drilling mounting plate 712 is provided in the middle of the door-type upper frame 71. The drilling drive mechanism 12 is fixedly installed on the drilling mounting plate 712. A base plate 722 is provided at the bottom of the lower box body 72. A threading mounting plate 723 is provided on the upper part of the base plate 722. The threading drive mechanism 23 is provided on the threading mounting plate 723. The binding platform 721 is directly arranged on the upper end surface of the lower box body 72, thereby eliminating the traditional lower bracket, integrating the shell and the bracket into one, simplifying the structure and reducing costs, and the door-type upper shelf 71 is assembled by bending and assembling plate parts, simplifying the production process, reducing production costs and improving production efficiency.

[0044] Specifically, a binding switching mechanism is provided in the lower box body 72, and the binding switching mechanism includes a binding slide 51, a binding rope, a switching rocker 53, a switching reset spring and a plurality of conductive rubber pads 52. The binding slide 51 is slidably installed on the binding platform 721, and the middle part of the switching rocker 53 is pivotally connected to the upper part of the door-type upper frame 71. The front end of the switching rocker 53 is abutted against the drilling slide 11, and the rear end of the switching rocker 53 is connected to the upper end of the binding rope, and the lower end of the binding rope is connected to the binding slide 51. The conductive rubber pad 52 is rotatably installed on the binding slide 51. The drilling slide 11 is provided with a plurality of drill bits 13 at intervals, and each conductive rubber pad 52 is located directly below each drill bit 13. Each conductive rubber pad 52 is electrically connected to the control circuit. A reset trigger switch is also provided on the upper part of the door-type upper frame 71. The reset trigger switch is triggered and cooperated with the drilling slide 11, and the control circuit is electrically connected to the reset trigger switch. When drilling, the binding slide 51 slides forward under the action of the switching reset spring, so that each conductive rubber pad 52 is located directly below the drill bit 13. When drilling, the drill bit 13 moves downward to drill until the drill bit 13 penetrates the binding material and contacts the conductive rubber pad 52 to form a loop. At this time, the control circuit sends a reverse control signal to the drilling drive mechanism 12, and at the same time sends a start control signal to the threading drive motor 231. At this time, the paper pressing device enters a locked state, and the drilling slide 11 moves upward to reset; after resetting to the origin, the drilling slide 11 continues to move upward to hit the switching rocker 53, and at the same time triggers the reset trigger switch. The reset trigger switch sends a stop control signal to the control circuit. The control circuit controls the drilling drive mechanism 12 to stop, and the switching rocker 53 pulls the binding rope, thereby driving the binding slide 51 to move backward to avoid the threading needle.

[0045] Specifically, a threading locking mechanism is provided on one side of the base plate 722. The threading locking mechanism includes a locking mounting plate 61, a locking pin 62, and a pin return spring. The locking pin 62 is slidably mounted on the locking mounting plate 61. The pin return spring is provided between the locking pin 62 and the locking mounting plate 61. A locking slot is provided on one side of the threading slide 21. The locking pin 62 engages with the locking slot. When the threading slide 21 is reset downward to the origin, the locking pin 62 abuts against the locking slot, thereby fixing the threading slide 21 and preventing the threading slide 21 from shaking during transportation and movement. Of course, the threading locking mechanism can also use a tension spring to fix the threading slide 21.

[0046] 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 may be changes in the specific implementation methods and application scope. The content of this specification should not be understood as limiting the present invention.

Claims

1. A thread-binding machine with an improved paper pressing device, comprising a frame, a drilling device (1), a threading device (2) and a paper pressing device (3), wherein a binding platform (721) is provided in the middle of the frame, the drilling device (1) is provided with a drilling slide (11) and a drilling drive mechanism (12), the drilling slide (11) is slidably mounted on the upper part of the frame, the drilling drive mechanism (12) is transmission-connected to the drilling slide (11), the threading device (2) is provided with a threading slide (21) and a threading drive mechanism (23), the threading slide (21) is slidably mounted on the lower part of the frame, the threading drive mechanism (23) is transmission-connected to the threading slide (21), and the paper pressing device (3) is provided between the binding platform (721) and the drilling device (1), characterized in that: The paper pressing device (3) comprises a paper pressing board (31), a locking rod (32), a locking pendulum block (35), a locking elastic reset member (36) and an unlocking rope (37); the paper pressing board (31) is slidably installed between the drilling slide (11) and the binding platform (721); the locking rod (32) is vertically installed on the paper pressing board (31); the first end of the locking pendulum block (35) is hinged to the frame; a locking hole (351) vertically penetrating the locking pendulum block (35) is provided in the middle of the locking pendulum block (35); the locking rod (32) is inserted into the locking hole (351); the locking elastic reset member (36) is arranged at the second end of the locking pendulum block (35); the upper end of the unlocking rope (37) is connected to the second end of the locking pendulum block (35); the lower end of the unlocking rope (37) passes through the binding platform (721) and is transmission-connected to the threading drive mechanism (23).

2. A thread-bound bookbinding machine with an improved paper pressing device according to claim 1, characterized in that: The threading drive mechanism (23) comprises a threading drive motor (231) and a fan-shaped threading gear (232), the threading drive motor (231) is fixedly mounted on the lower part of the frame, the fan-shaped threading gear (232) is fixedly mounted on the output shaft of the threading drive motor (231), the threading slide (21) is provided with a threading rack (22), the lower end of the unlocking pull rope (37) is provided with a lower connecting portion (372), the lower connecting portion (372) is rotatably mounted on the outer side surface of the fan-shaped threading gear (232) and adjacent to the side of the fan-shaped threading gear (232) facing the threading rack (22), and the fan-shaped threading gear (232) is transmission-connected to the threading rack (22); The paper pressing device (3) is provided with a locked state and an unlocked state. In the unlocked state, the fan-shaped threading gear (232) is separated from the threading rack (22), the lower connecting portion (372) moves downward to pull the unlocking rope (37) to tighten, the locking pendulum block (35) rotates downward, the locking hole (351) and the locking rod (32) are coaxially arranged, and a sliding gap is provided between the locking hole (351) and the locking rod (32); In the locked state, the lower connecting portion (372) moves upward to loosen the unlocking pull rope (37), the locking pendulum block (35) rotates upward, and the outer side wall of the locking rod (32) abuts against the inner side wall of the locking hole (351).

3. The thread-bound binding machine with an improved paper pressing device according to claim 2, characterized in that: The binding platform (721) is provided with at least two paper pressing guide posts (711), the lower part of the paper pressing guide posts (711) is fixedly connected to the binding platform (721), the drilling slide (11) is vertically provided with at least two paper pressing perforations, the upper parts of the two paper pressing guide posts (711) are respectively penetrated in the two paper pressing perforations, the paper pressing board (31) is slidably mounted on the two paper pressing guide posts (711), the paper pressing device (3) is also provided with at least one paper pressing elastic reset member (381) and at least one paper pushing spring (382), the paper pushing spring (382) is sleeved on the paper pressing guide posts (711), the upper end of the paper pushing spring (382) abuts against the drilling slide (11), and the lower end of the paper pushing spring (382) abuts against the paper pressing board (31), one end of the paper pressing elastic reset member (381) is connected to the paper pressing board (31), and the other end is connected to the frame to realize driving the paper pressing board (31) to reset upward.

4. The thread-bound binding machine with an improved paper pressing device according to claim 3, characterized in that: The paper pressing plate (31) is provided with at least two linear bearings (39), and the two linear bearings (39) are respectively slidably connected to the corresponding paper pressing guide pillars (711).

5. The thread-bound bookbinding machine with an improved paper pressing device according to claim 3, characterized in that: The upper end surface of the frame is fixedly mounted with a locking mounting seat (33), the first end of the locking pendulum block (35) is hinged to the locking mounting seat (33), the lower end of the locking rod (32) is fixedly mounted on the upper part of the press board (31), the upper end of the locking rod (32) passes through the frame and is arranged in the locking hole (351), the frame is fixedly mounted with a spring mounting sleeve (34) with an opening facing upward, the lower part of the spring mounting sleeve (34) is provided with a rope threading hole, and the locking elastic reset The component (36) includes a locking spring, which is arranged in the spring mounting sleeve (34). The upper end of the locking spring abuts against the locking pendulum block (35), and the lower end abuts against the lower inner wall of the spring mounting sleeve (34). The upper end of the unlocking rope (37) passes through the rope hole and the locking spring in sequence and is connected to the locking pendulum block (35). The paper pressing elastic reset component (381) includes a paper pressing tension spring, the upper end of which is fixedly connected to the frame, and the lower end of which is fixedly connected to the paper pressing board (31).

6. The thread-bound bookbinding machine with an improved paper pressing device according to claim 5, characterized in that: The upper end of the unlocking pull rope (37) is provided with a limiting portion (371), the second end of the locking pendulum block (35) is provided with a pull rope limiting hole (352), the unlocking pull rope (37) is passed through the pull rope limiting hole (352), and the limiting portion (371) is located above the locking pendulum block (35) and is limitedly matched with the locking pendulum block (35).

7. A thread-bound bookbinding machine with an improved paper pressing device according to any one of claims 2 to 6, characterized in that: The thread-binding machine is provided with a control circuit, the drilling drive mechanism (12) and the threading drive motor (231) are electrically connected to the control circuit respectively, a locking trigger switch (41) is provided at the lower part of the frame, a trigger roller (42) is provided between the threading drive motor (231) and the fan-shaped threading gear (232), the trigger roller (42) is fixedly mounted on the output shaft of the threading drive motor (231), and an unlocking trigger protrusion (421), a first locking trigger protrusion (422) and a second locking trigger protrusion (423) are provided on the outer circumference of the trigger roller (42) at intervals along the circumferential direction. 23), the unlocking triggering protrusion (421) and the lower end of the unlocking pull rope (37) are symmetrically arranged along the output axis of the threading drive motor (231), the first locking triggering protrusion (422) is arranged on one side adjacent to the lower end of the unlocking pull rope (37), the second locking triggering protrusion (423) is arranged between the unlocking triggering protrusion (421) and the first locking triggering protrusion (422) and is located on the rear side of the fan-shaped threading gear (232), the unlocking triggering protrusion (421), the first locking triggering protrusion (422) and the second locking triggering protrusion (423) are respectively triggered and matched with the locking trigger switch (41); In the unlocked state, the unlocking triggering protrusion (421) abuts against the locking triggering switch (41); in the locked state, the first locking triggering protrusion (422) and the second locking triggering protrusion (423) respectively abut against the locking triggering switch (41).

8. The thread-bound bookbinding machine with an improved paper pressing device according to claim 7, characterized in that: The frame comprises a door-shaped upper frame (71), a lower box body (72), an upper shell (73) and a rear cover (74); the binding platform (721) is arranged on the upper end surface of the lower box body (72); the door-shaped upper frame (71) is fixedly mounted on the binding platform (721); the lower box body (72) is covered by the door-shaped upper frame (71); the upper part of the rear cover (74) is fixedly connected to the upper shell (73); the lower part of the lower box body (72) is fixedly connected to the rear cover (74); the drilling slide (11 ) is slidably mounted on a door-shaped upper frame (71), the threading slide (21) is slidably mounted in a lower box body (72), a drilling mounting plate (712) is provided in the middle of the door-shaped upper frame (71), the drilling drive mechanism (12) is fixedly mounted on the drilling mounting plate (712), a bottom plate (722) is provided at the bottom of the lower box body (72), a threading mounting plate (723) is provided on the upper part of the bottom plate (722), and the threading drive mechanism (23) is provided on the threading mounting plate (723).

9. The thread-binding machine with an improved paper pressing device according to claim 8, characterized in that: A binding switching mechanism is provided in the lower box body (72), and the binding switching mechanism includes a binding slide (51), a binding rope, a switching rocker (53), a switching return spring and a plurality of conductive rubber pads (52). The binding slide (51) is slidably mounted on the binding platform (721), the middle portion of the switching rocker (53) is pivotally connected to the upper portion of the door-shaped upper frame (71), the front end portion of the switching rocker (53) is abutted against the drilling slide (11), and the rear end portion of the switching rocker (53) is connected to the upper end portion of the binding rope. The lower end of the pull rope is connected to the binding slide (51), the conductive rubber pad (52) is rotatably mounted on the binding slide (51), a plurality of drill bits (13) are arranged at intervals on the drilling slide (11), each conductive rubber pad (52) is located directly below each drill bit (13), each conductive rubber pad (52) is electrically connected to the control circuit, and a reset trigger switch is also provided on the upper part of the door-shaped upper frame (71), the reset trigger switch is triggered in conjunction with the drilling slide (11), and the control circuit is electrically connected to the reset trigger switch.

10. The thread-bound bookbinding machine with an improved paper pressing device according to claim 8, characterized in that: A threading locking mechanism is provided on one side of the base plate (722), and the threading locking mechanism includes a locking mounting plate (61), a locking pin (62) and a pin return spring. The locking pin (62) is slidably mounted on the locking mounting plate (61), and the pin return spring is arranged between the locking pin (62) and the locking mounting plate (61). A locking slot is provided on one side of the threading slide (21), and the locking pin (62) is plugged into the locking slot.

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