Novel connecting shaft and binding machine

Abstract

The utility model relates to a novel coupling shaft and a binding machine equipped with the coupling shaft, comprising a drilling tool section provided with a mounting hole connected with a drilling tool; the motor section is provided with a connecting hole connected with a motor; the connecting section is used for connecting the drilling tool section with the motor section and is provided with a through groove hole for communicating the mounting hole with the connecting hole; the through groove hole is located in the axis of the connecting shaft, and the end, connected with the mounting hole, of the through groove hole is constructed to be a circular truncated cone. An existing structure is optimized, the drilling tool mounting device can adapt to mounting of drilling tools of various sizes, the phenomenon that paper scraps penetrate through and block the through groove holes can be improved, and mounting / dismounting adjustment can be conducted on the drilling tools of different models at the through groove holes; meanwhile, the groove is formed in the wall hole at the position of the mounting hole, so that the mounting condition of the drilling tool can be intuitively observed, the position of the drilling tool can be randomly and accurately adjusted, and the drilling tool can be quickly unloaded.

Description

Technical Field

[0001] The present application belongs to the technical field of auxiliary connection for binding machine production, and in particular, relates to a novel connecting shaft and a binding machine provided with the connecting shaft. Background Art

[0002] The drill bit is connected to the motor via a connecting shaft, and a mounting hole is provided at one end of the connecting shaft connected to the drill bit, and a mounting hole is also provided at the other end of the connecting shaft connected to the motor. The existing connecting shaft has the following problems:

[0003] (1) The middle of the existing coupling shaft is provided with a channel for penetrating the mounting holes at both ends. The channel is a columnar through-slot hole. Due to the limitation of the through-slot hole structure, the size of the through-slot hole of the coupling shaft and the inner hole of the drill bit are strictly required. lead to The size range of the coupling shaft and the drill bit is narrow. It is impossible to install and use drill bits of different diameters, resulting in connect It has poor applicability and wastes connecting shaft materials.

[0004] At the same time, this columnar through-slot hole structure is prone to paper scraps gradually blocking the through-slot hole along the height direction of the connecting shaft as the drill rotates during drilling, which is not conducive to the drill drilling.

[0005] (2) The existing installation hole for the drill bit is a closed structure. When installing the drill bit, it is necessary to adjust its installation depth through experience, and its installation status cannot be observed intuitively.

[0006] Moreover, once the drill bit is installed out of position or deformed due to long-term use, the drill bit cannot be directly uninstalled. The connecting shaft needs to be removed together with the drill bit, and then a push rod is inserted into the through slot hole to push the drill bit to remove it. This is not only troublesome but also easy to damage the drill bit and the installation hole. In serious cases, the connecting shaft cannot be used a second time. Summary of the invention

[0007] The present application provides a novel connecting shaft and a binding machine provided with the connecting shaft, which solves the technical problems that the drill bit is easily blocked by paper scraps in the through slot hole of the existing connecting shaft due to unreasonable structural design and cannot be used, and the drill bit is inconvenient to load and unload.

[0008] In order to solve at least one of the above technical problems, the technical solution adopted in this application is:

[0009] A new type of connecting shaft, comprising:

[0010] A drill bit segment, which is provided with a mounting hole connected to the drill bit;

[0011] A motor section, which is provided with a connection hole connected to the motor;

[0012] A connecting section, used to connect the drill section and the motor section, and provided with a through slot hole for connecting the mounting hole and the connecting hole;

[0013] The through slot hole is located on the axis of the connecting shaft, and one end thereof connected to the mounting hole is constructed as a truncated cone.

[0014] Furthermore, the small diameter end of the truncated cone is close to one side of the mounting hole, and the diameter of the small diameter end is smaller than the minimum inner diameter of the mounting hole.

[0015] Furthermore, the generatrix angle of the truncated cone is less than 15°;

[0016] Preferably, the length of the truncated cone is 1 / 3-1 / 2 of the length of the through slot.

[0017] Furthermore, a section of the through-slot hole close to the connecting hole is constructed as a cylinder, and the cylinder is also provided with chip removal grooves penetrating through the double side walls thereof.

[0018] Furthermore, the chip removal groove is arranged perpendicular to the axis of the connecting shaft and is constructed as an oblong structure.

[0019] Furthermore, at least one groove is provided on the wall surface of the mounting hole along its height direction;

[0020] Preferably, the groove is disposed through one side wall or both side walls.

[0021] Furthermore, the groove is constructed as a groove-type structure, and its open end is located on the end surface of the mounting hole away from the connecting section;

[0022] Preferably, the groove height is smaller than the mounting hole depth.

[0023] Furthermore, the groove is constructed as a long hole structure, both ends of which are arranged in the height direction of the mounting hole and do not penetrate the suspended end of the mounting hole;

[0024] Preferably, the depth of the groove at one side close to the connecting section is smaller than the depth of the mounting hole.

[0025] Furthermore, the mounting hole and the connecting hole are both coaxially arranged cylindrical holes, and small circular holes for the pin to pass through are also provided on the wall surfaces of the mounting hole and the connecting hole.

[0026] A binding machine is provided with the connecting shaft as described above.

[0027] A new type of connecting shaft designed by the present application is adopted to optimize the existing structure. By modifying the structure of the through slot hole and the structure of the mounting hole at one end connected to the drill, it can not only adapt to the installation of drills of various sizes, but also improve the phenomenon of paper scraps blocking the through slot hole, and can adjust the installation / disassembly of different types of rotary tools at the through slot hole position; at the same time, a groove is set on the wall hole at the mounting hole position, which can not only visually observe the installation status of the drill, but also adjust the position of the drill at will and accurately, and quickly unload the drill. The present application also proposes a binding machine equipped with the connecting shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional diagram of the cooperation between the connecting shaft and the drill bit according to an embodiment of the present application;

[0029] Figure 2 This is an exploded view of the coupling shaft and the drill bit in accordance with an embodiment of the present application.

[0030] Figure 3 is a top view of a connecting shaft according to an embodiment of the present application;

[0031] Figure 4 is a cross-sectional view of a connecting shaft according to an embodiment of the present application;

[0032] Figure 5 It is a schematic diagram of another type of groove according to an embodiment of the present application.

[0033] In the figure:

[0034] 1. Connecting shaft 2. Drill 10. Mounting hole

[0035] 20, connecting hole 30, through-slot hole 31, truncated cone

[0036] 32, cylinder 33, chip groove 40, profile groove DETAILED DESCRIPTION

[0037] The present application is described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] This embodiment proposes a new type of connecting shaft 1, such as Figure 1-2As shown, along the axial direction of the connecting shaft 1, it includes a drill segment and a motor segment placed at both ends thereof, and a connecting segment located in the middle. Among them, the drill segment is provided with a mounting hole 10 connected to the drill 20; and the motor segment is provided with a connecting hole 20 connected to the motor (omitted in the figure). The connecting segment is used to connect the drill segment and the motor segment, and is provided with a through slot hole 30 for connecting the mounting hole 10 and the connecting hole 20. The mounting hole 10, the connecting hole 20, and the through slot hole 30 are all located on the axis of the connecting shaft 10. One end of the through slot hole 30 connected to the mounting hole 10 is constructed as a truncated cone 31, and a section thereof close to the connecting hole 20 is constructed as a cylinder 32, and the cylinder 32 is provided with a chip removal groove 33 that runs through its double side walls.

[0039] like Figure 4 As shown, the small diameter end of the truncated cone body 31 is arranged near one side of the mounting hole 10, that is, the truncated cone body 31 is smaller at the top and smaller at the bottom along the height direction of the connecting shaft, that is, the end near the drill is the small diameter end, and the end near the chip groove 33 is the large diameter end. This outwardly expanding structure is not only convenient for adjusting the installation length of the drill, but also conducive to the discharge of paper scraps when drilling, and will not block the position of the section where the through slot hole 30 is located, ensuring the working stability of the drill 2. This is because the paper scraps will gradually move upward along the length direction of the connecting shaft 10 as the drill 2 rotates, and overflow upward in the hole groove in the truncated cone body 31 along its wall surface, and then be thrown out from the chip groove 33, so as to solve the technical problem that the paper scraps hinder the rotation of the drill 2.

[0040] Furthermore, the diameter d1 of the small diameter end of the truncated cone body 31 is smaller than the minimum inner diameter d2 of the mounting hole 10, which not only improves the wall thickness strength of the section where the truncated cone body 31 is located, but also helps prevent the end of the drill 2 from shaking due to the expansion of the installation space. Preferably, the diameter difference between the small diameter end diameter d1 of the truncated cone body 31 and the minimum inner diameter d2 of the mounting hole 10 is 2-5mm. If the diameter difference is less than 2mm, it is not conducive to the fixation of the drill 2; if the diameter difference exceeds 5mm, it is not conducive to the upward movement and transmission of paper scraps.

[0041] Furthermore, the generatrix angle θ of the truncated cone 31 is less than 15°. If the angle θ is greater than 15°, the diameter of the large diameter end of the truncated cone 31 will be greater than the wall surface of the through slot hole 30, reducing the strength of the truncated cone 31. The length of the truncated cone 31 is 1 / 3-1 / 2 of the length of the through slot hole 30. If the length of the truncated cone 31 is too long, that is, greater than 1 / 2 of the length of the through slot hole 30, the length of the chip discharge groove 33 will be shorter, resulting in that the paper scraps cannot be completely discharged. If the length of the truncated cone 31 is too short, that is, less than 1 / 3 of the length of the through slot hole 30, the strength of the connecting section will be reduced.

[0042] The wall surface of the cylinder 32 is provided with a split chip groove 33, and the chip groove 33 is through the two side walls of the through slot hole 30 and is arranged perpendicular to the axis of the connecting shaft 1. It is constructed as an oblong structure and is mainly used to communicate with an external hose for collecting paper scraps to discharge paper scraps. The width and length of the chip groove 33 can be determined based on actual conditions and are not specifically limited here.

[0043] like Figure 3 As shown, on the wall surface of the mounting hole 10 on one side of the drill bit segment, at least one groove 40 is provided along the height direction thereof, which is mainly used as an observation window for observing the installation status of the drill bit 2. Preferably, the groove 40 can be arranged through a single side wall surface of the mounting hole 10 or both side walls of the mounting hole 10. Regardless of whether the groove 40 is constructed as a single-side groove or a double-side groove, it is a structure arranged along the axial direction of the connecting shaft 1, and if it is a double-side groove, it is a structure arranged in alignment.

[0044] Of course, the profile groove 40 can also be constructed as a three-sided groove, that is, the profile groove is evenly arranged along the periphery of the wall of the mounting hole 10, but this configuration structure needs to ensure the strength of the mounting hole 10 configuration, which is omitted in this figure.

[0045] Moreover, when the drill bit 2 is deformed, the push rod enters the truncated cone body 31 through the chip removal groove 33 and then pushes against the drill bit 2 to unload the drill bit 2. The deformation and unloading conditions of the drill bit 2 can also be observed through the profile groove 40. When the drill bit 2 is fixed in the mounting hole 10, the push rod can also be passed through the profile groove 40 to press the drill bit 2, and then the push rod is knocked to force the drill bit 2 to move down and unload.

[0046] Further, the profile groove 40 is constructed as a groove type structure, that is, one side of it is open, and its open end is located at the end surface of the mounting hole 10 away from the connecting section, and the other end is arranged on the wall surface of the mounting hole 10. At this time, the height of the profile groove 40 is less than the depth of the mounting hole 10.

[0047] like Figure 5 As shown, the groove 40 is constructed as a long strip hole structure, and both ends of the groove 40 are arranged in the height direction of the mounting hole 10, that is, both are arranged on the wall surface and do not penetrate the suspended end of the mounting hole 10. This structure makes the suspended end of the mounting hole 10 a closed structure, and only a long strip groove 40 is arranged on the wall surface. This structure can also solve the technical problem of observing the state of the drill 2.

[0048] Preferably, the width of the profile groove 40 is 3-10 mm. In order to ensure monitoring of the entire installation process of the drill bit 2 , the depth of the profile groove 40 on one side close to the connecting section is less than the hole depth of the installation hole 10 .

[0049] In this embodiment, the mounting hole 10 and the connecting hole 20 are both coaxially arranged cylindrical holes, and small round holes for the pins to pass through are also provided on the wall surfaces of the mounting hole 10 and the connecting hole 20, mainly to facilitate the installation of the drill 2 and the motor. The small round hole is coaxially arranged on the axis of the connecting shaft 1 and is provided on the same side as the chip removal groove 33.

[0050] A binding machine is provided with the connecting shaft 10 as described above.

[0051] A new type of connecting shaft designed in the present application is adopted to optimize the existing structure. By modifying the structure of the through slot hole and the structure of the mounting hole at one end connected to the drill bit, it can not only adapt to the installation of drill bits of various sizes, but also improve the phenomenon of paper scraps blocking the through slot hole, and different types of rotary tools can be installed / disassembled and adjusted at the through slot hole position; at the same time, a groove is provided on the wall hole at the mounting hole position, which can not only visually observe the installation status of the drill bit, but also arbitrarily and accurately adjust the position of the drill bit, and quickly unload the drill bit.

[0052] The above detailed description of the embodiments of the present application is only a preferred embodiment of the present application and cannot be considered to limit the scope of implementation of the present application. All equivalent changes and improvements made within the scope of the present application should still fall within the scope of the patent coverage of the present application.

Claims

1. A new type of connecting shaft, characterized in that: include: A drill bit segment, which is provided with a mounting hole connected to the drill bit; A motor section, which is provided with a connection hole connected to the motor; A connecting section, used to connect the drill section and the motor section, and provided with a through slot hole for connecting the mounting hole and the connecting hole; The through slot hole is located on the axis of the connecting shaft, and one end thereof connected to the mounting hole is constructed as a truncated cone.

2. A new type of connecting shaft according to claim 1, characterized in that: The small diameter end of the truncated cone body is close to one side of the mounting hole, and the diameter of the small diameter end is smaller than the minimum inner diameter of the mounting hole.

3. A new type of connecting shaft according to claim 1 or 2, characterized in that: The generatrix angle of the truncated cone is less than 15°.

4. A new type of connecting shaft according to claim 3, characterized in that: The length of the truncated cone is 1 / 3-1 / 2 of the length of the through slot.

5. A new type of connecting shaft according to claim 4, characterized in that: A section of the through slot hole close to the connecting hole is constructed as a cylinder, and the cylinder is also provided with a chip removal groove penetrating through the double side walls thereof.

6. A new type of connecting shaft according to claim 5, characterized in that: The chip removal groove is arranged perpendicular to the axis of the connecting shaft and is constructed in an oblong structure.

7. A new type of connecting shaft according to any one of claims 1-2, 4-6, characterized in that: At least one groove is arranged along the height direction of the wall surface of the mounting hole.

8. A new type of connecting shaft according to claim 7, characterized in that: The profile groove is arranged to penetrate through a single side wall or double side wall surfaces.

9. A new type of connecting shaft according to claim 8, characterized in that: The groove is constructed as a groove-type structure, and an open end thereof is located at an end surface of the mounting hole on a side away from the connecting section.

10. A new type of connecting shaft according to claim 8 or 9, characterized in that: The height of the profile groove is smaller than the depth of the mounting hole.

11. A new type of connecting shaft according to claim 10, characterized in that: The profile groove is constructed as a long hole structure, both ends of which are arranged in the height direction of the mounting hole and do not penetrate the suspended end of the mounting hole.

12. A new type of connecting shaft according to claim 11, characterized in that: The side of the groove close to the connecting section is smaller than the hole depth of the mounting hole.

13. A new type of connecting shaft according to any one of claims 1-2, 4-6, 8-9, 11-12, characterized in that: The mounting hole and the connecting hole are both coaxially arranged cylindrical holes, and small circular holes for the pin to pass through are also provided on the wall surfaces of the mounting hole and the connecting hole.

14. A binding machine, characterized in that: A connecting shaft as described in any one of claims 1 to 13 is provided.

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