A binding machine

Abstract

This utility model provides a binding machine, including a frame (1), a drill assembly, and a control board. The drill assembly includes a drive component, a conductive cylindrical gear (2), and a drill structure (3). The drive component is insulated from and driven by the conductive cylindrical gear (2). The lower end of the conductive cylindrical gear (2) is connected to the drill structure (3). The conductive cylindrical gear (2) is connected to the control board via a conductive wire (8). This binding machine achieves drill stop protection by using capacitive touch control in the drill stop structure, thus solving the safety hazards caused by exposed drills in traditional binding machines.

Description

Technical Field

[0001] This utility model relates to the technical field of office equipment, and more specifically to a binding machine. Background Technology

[0002] In office settings such as finance and records management, traditional binding machines, as core equipment for document processing, primarily use mechanical transmission to punch and bind paper, vouchers, and other documents. Their working principle is as follows: a punching motor drives a cylindrical gear in both forward and reverse rotation, which in turn drives the drill bit to rotate at high speed (typically 1000-3000 rpm) to complete the punching action. The equipment consists of the drill bit, punching base, gear transmission system, and motor assembly, with the drill bit being the direct actuating component. This existing binding machine technology has the following drawbacks: the drill bit, as a high-speed rotating exposed moving part (linear speed reaching 5-10 m / s), lacks any protective cover or touch-stop sensor during operation. When operators change the drill bit, adjust the paper position, or make a mistake, if their hands come into contact with the drill bit's cutting edge, the inertial rotation can easily cause deep cuts, soft tissue contusions, and other safety accidents, making the binding machine a safety hazard of "high operational risk" and "low reliability of protection." Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a binding machine that uses capacitive touch control principle in the drill bit stop structure to realize drill bit stop protection, thereby solving the safety hazards caused by exposed drill bits in traditional binding machines.

[0004] The technical solution of this utility model is to provide a binding machine, including a frame, a drill assembly and a control board. The drill assembly includes a drive component, a conductive cylindrical gear and a drill structure. The drive component is insulated from and driven by the conductive cylindrical gear. The lower end of the conductive cylindrical gear is connected to the drill structure. The conductive cylindrical gear is connected to the control board through a conductive wire.

[0005] Compared with the prior art, the binding machine of this utility model has the following advantages: The binding machine is driven by an insulated drive connection between the drive component and the conductive cylindrical gear, which ensures power transmission while isolating electrical interference and avoiding current leakage or electromagnetic interference from affecting the control board signal; The lower end of the conductive cylindrical gear is connected to the drill bit structure and electrically connected to the control board through a conductive wire, which can detect the change in induced capacitance between the drill bit assembly and the ground in real time. When a person touches the drill bit, the change in capacitance triggers the control board to respond quickly and control the drill bit to stop working or reset, realizing a highly sensitive touch-stop protection function.

[0006] As an improvement, the drill bit assembly further includes a conductive carbon brush, which is mounted on the conductive cylindrical gear and connected to the conductive wire. With this structure, by mounting the conductive carbon brush on the conductive cylindrical gear and connecting it to the conductive wire, a stable electrical connection can be ensured between the rotating drill bit assembly and the control board, making the transmission of the inductive capacitance detection signal more reliable.

[0007] As an improvement, the drill bit assembly further includes a baffle plate. The conductive cylindrical gear is disposed within the drilling base, the baffle plate is mounted on the drilling base, the conductive carbon brush is connected between the baffle plate and the conductive cylindrical gear, and the conductive wire is connected between the baffle plate and the control chip on the control board. With this structure, by placing the conductive cylindrical gear within the drilling base, using the baffle plate mounted on the drilling base to fix the conductive carbon brush and make it contact the conductive cylindrical gear, and simultaneously connecting the baffle plate and the control chip via the conductive wire, a stable electrical connection path can be formed. This ensures that the induced capacitance signal is transmitted to the control board in real time and accurately when the drill bit assembly rotates, thereby improving the sensitivity and reliability of the stop protection function.

[0008] As an improvement, the drill bit assembly also includes an insulated bearing, through which the conductive cylindrical gear is rotatably mounted on the drilling base. With this structure, the conductive cylindrical gear is rotatably mounted on the drilling base via the insulated bearing, isolating the conductive path between the gear and the base. This prevents the sensing capacitor detection signal from being lost or interfered with due to base grounding, ensuring the accuracy and stability of the stop protection function.

[0009] The drill bit assembly also includes an insulated gear, through which the drive component achieves an insulated drive connection with the conductive cylindrical gear. This structure, by using the insulated gear to achieve an insulated drive connection between the drive component and the conductive cylindrical gear, effectively blocks the electrical path between them, preventing electromagnetic interference or current leakage generated during the operation of the drive component from affecting the inductive capacitance detection of the conductive cylindrical gear, thus ensuring the accuracy and reliability of the drill bit stop protection function.

[0010] A lead screw is fixed on the frame; the driving component includes a motor, a worm gear, and a worm. The worm gear is connected to the insulated gear via a connector, which is sleeved on the outside of the lead screw and threadedly connected to it. The insulated gear meshes with the conductive cylindrical gear. The worm is connected to the motor, and it meshes with the worm gear. With this structure, the transmission design of the lead screw and driving component (motor, worm gear), combined with the meshing of the insulated gear and the conductive cylindrical gear and the threaded connection of the connector, achieves stable lifting and precise position control of the drill bit assembly. Simultaneously, the self-locking characteristics of the worm gear and the insulation structure ensure the reliability of the electrical connection during transmission, avoiding electromagnetic interference. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the binding machine of this utility model.

[0012] Figure 2 This is a partial three-dimensional structural diagram of the binding machine of this utility model.

[0013] Figure 3 This is a three-dimensional structural diagram of the drill bit assembly of the binding machine of this utility model.

[0014] Figure 4 This is a three-dimensional structural diagram of a portion of the drill bit assembly of the binding machine of this utility model.

[0015] As shown in the figure: 1. Frame, 2. Conductive cylindrical gear, 201. Gear structure, 202. Cylinder, 3. Drill bit structure, 4. Drilling base, 401. Mounting hole, 5. Insulated bearing, 6. Baffle, 7. Conductive carbon brush, 8. Conductive wire, 9. Insulated gear, 10. Motor, 11. Connector, 12. Lead screw, 13. Control board. Detailed Implementation

[0016] To better understand this application, various aspects of this application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely illustrative of exemplary embodiments of this application and are not intended to limit the scope of this application in any way. Throughout the specification, the same reference numerals refer to the same elements.

[0017] In the accompanying drawings, the thickness, size, and shape of the objects have been slightly exaggerated for illustrative purposes. The drawings are for illustrative purposes only and are not drawn to scale.

[0018] It should also be understood that the terms "comprising," "having," "including," and "containing," when used in this specification, indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof. Furthermore, when expressions such as "...at least one" appear after a list of listed features, they modify the entire listed feature, not individual elements in the list.

[0019] like Figures 1 to 4 As shown, this utility model discloses a binding machine, including a frame 1, a drill assembly and a control board 13.

[0020] The drill assembly includes a drive unit, a conductive cylindrical gear 2, and a drill structure 3. The drill structure 3 is fixed to the conductive cylindrical gear 2 with screws. The upper side wall of the conductive cylindrical gear 2 is provided with a gear structure 201, and the lower end of the conductive cylindrical gear 2 is a smooth cylinder 202.

[0021] The conductive cylindrical gear 2 is disposed in the punching base 4 of the binding machine. The upper end of the conductive cylindrical gear 2 is connected to the inner ring of the insulating bearing 5. The insulating bearing 5 is mounted on the punching base 4. The conductive cylindrical gear 2 is rotatably mounted on the punching base 4 through the insulating bearing 5. In this embodiment, the insulating bearing 5 is a ceramic bearing.

[0022] The drill bit assembly also includes a baffle 6 and a conductive carbon brush 7. The conductive carbon brush 7 is connected between the baffle 6 and the conductive cylindrical gear 2. The conductive wire 8 is connected between the baffle 6 and the control chip 1301 on the control board 13. The baffle 6 is made of conductive material. The specific installation structure is as follows: a mounting hole 401 is provided through the drilling base 4. The baffle 6 is mounted on the drilling base 4 near the mounting hole 401 by screws. One end of the conductive carbon brush 7 is pressed by the baffle 6, and the other end of the conductive carbon brush 7 extends through the mounting hole 401 to abut against the cylinder 202 at the lower end of the conductive cylindrical gear 2. One end of the conductive wire 8 is connected to the control chip 1301 on the control board 13 via a connector. The other end of the conductive wire 8 is connected to a ring terminal by crimping or welding. The ring terminal is fixedly connected to the baffle 6.

[0023] The drill bit assembly further includes an insulated gear 9, and the drive component is insulatedly driven to the conductive cylindrical gear 2 via the insulated gear 9. The drive component includes a motor 10, a worm gear, and a worm. The worm gear is connected to the insulated gear 9 via a connector 11, and the insulated gear 9 meshes with the conductive cylindrical gear 2. A lead screw 12 is fixed on the frame 1; the connector 11 is sleeved on the outside of the lead screw 12 and threadedly connected to the lead screw 12; the insulated gear 9 meshes with the gear structure 201 of the conductive cylindrical gear 2; the worm is connected to the motor 10, and the worm meshes with the worm gear.

[0024] After the motor 10 starts, it drives the worm to rotate. The worm meshes with the worm wheel, transmitting power to the worm wheel. The worm wheel is fixedly connected to the insulating gear 9 via the connector 11, thereby driving the insulating gear 9 to rotate. Since the insulating gear 9 meshes with the upper gear structure 201 of the conductive cylindrical gear 2, the rotation of the insulating gear 9 will drive the conductive cylindrical gear 2 to rotate synchronously. The lower end of the conductive cylindrical gear 2 is fixed to the drill bit structure 3 by screws, thereby giving the drill bit rotational power and putting it into the drilling state.

[0025] The lead screw 12 fixed on the frame 1 is threadedly connected to the connector 11. When the motor 10 drives the worm gear to rotate, the connector 11 moves up and down along the axial direction of the lead screw 12 (the threaded transmission converts rotational motion into linear motion). The connector 11 is connected to the insulating gear 9, so the insulating gear 9, the conductive cylindrical gear 2, and the drill bit structure 3 will rise and fall synchronously with the connector 11. During drilling, the connector 11 moves downward along the lead screw 12, causing the drill bit structure 3 to descend until the drill bit contacts the paper and rotates to drill a hole. After drilling is completed, the connector 11 moves upward along the lead screw 12, and the drill bit structure 3 rises and resets, avoiding the risk of residual paper or contact.

[0026] The conductive cylindrical gear 2 is made of conductive material, and its smooth cylindrical lower end 202 abuts against the conductive carbon brush 7. The conductive carbon brush 7 is electrically connected to the control chip 1301 of the control board 13 through the baffle 6 (conductive material) and the conductive wire 8, forming a conductive path of "drill structure 3 → conductive cylindrical gear 2 → conductive carbon brush 7 → baffle 6 → conductive wire 8 → control board 13". When a human body touches the drill structure 3, the induced capacitance between the drill and the ground changes, and this change is transmitted to the control board 13 through the conductive path. After the control circuit in the control board 13 detects the change in capacitance signal, it will trigger the drill assembly to stop working or reset, realizing the touch protection function.

[0027] The above are merely specific embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Any modifications or equivalent substitutions to this utility model without departing from its spirit and scope should be covered within the protection scope of the claims of this utility model.

Claims

1. A binding machine, characterized in that: The device includes a frame (1), a drill bit assembly and a control board. The drill bit assembly includes a drive unit, a conductive cylindrical gear (2) and a drill bit structure (3). The drive unit is insulated from the conductive cylindrical gear (2) and driven. The lower end of the conductive cylindrical gear (2) is connected to the drill bit structure (3). The conductive cylindrical gear (2) is connected to the control board through a conductive wire (8).

2. The binding machine according to claim 1, characterized in that: The drill bit assembly also includes a conductive carbon brush (7), which is mounted on the conductive cylindrical gear (2) and connected to the conductive wire (8).

3. The binding machine according to claim 2, characterized in that: The drill bit assembly also includes a baffle (6), the conductive cylindrical gear (2) is disposed in the drilling base (4), the baffle (6) is mounted on the drilling base (4), the conductive carbon brush (7) is connected between the baffle (6) and the conductive cylindrical gear (2), and the conductive wire (8) is connected between the baffle (6) and the control chip (1301) on the control board (13).

4. The binding machine according to claim 3, characterized in that: The drill bit assembly also includes an insulating bearing (5), and the conductive cylindrical gear (2) is rotatably mounted on the drilling base (4) via the insulating bearing (5).

5. The binding machine according to claim 1, characterized in that: The drill bit assembly also includes an insulating gear (9), and the drive unit achieves an insulated drive connection with the conductive cylindrical gear (2) through the insulating gear (9).

6. The binding machine according to claim 5, characterized in that: A lead screw (12) is fixed on the frame (1); the driving component includes a motor (10), a worm gear and a worm, the worm gear is connected to the insulating gear (9) through a connector (11), the connector (11) is sleeved on the outside of the lead screw (12) and threadedly connected to the lead screw (12), the insulating gear (9) meshes with the conductive cylindrical gear (2); the worm is connected to the motor (10), and the worm meshes with the worm gear.

Images