A rebar tying device

Abstract

This utility model relates to a rebar tying device, including a housing, a drive unit, a winding unit, and an extrusion unit. The winding unit includes a first rotating shaft, a second gear, a first bevel gear, and a first one-way bearing. The first rotating shaft can rotate on the central support via the bearing, and the winding end of the first rotating shaft extends into the front housing. The inner ring of the first one-way bearing is sleeved on the first rotating shaft. The second gear and the first bevel gear are both fixedly connected to the outer ring of the first one-way bearing, and the second gear meshes with the first gear. This utility model features high-efficiency tying.

Description

Technical Field

[0001] This utility model relates to the field of building equipment technology, and in particular to a rebar tying device. Background Technology

[0002] In the field of construction engineering, the binding of steel mesh is a key process to ensure structural strength. Traditional techniques have long relied on manual labor, resulting in significant efficiency and quality bottlenecks. Manual binding requires workers to use hook knives and wire pliers to operate point by point, with each point of binding taking 10-15 seconds. Furthermore, the tightness of the binding depends on experience, leading to high labor costs and long construction cycles. Utility Model Content

[0003] The purpose of this invention is to provide a rebar tying device that can improve the tying efficiency of rebar mesh.

[0004] The rebar tying equipment provided by this utility model includes:

[0005] The housing includes a central zone retaining bracket, a front end housing, and a cable outlet housing, wherein one end of the central zone retaining bracket adjacent to the front end housing is embedded in the front end housing, and the cable outlet housing is fixedly mounted on the front end housing;

[0006] The drive unit includes a motor and a first gear. The motor is arranged toward the front end housing, and the output shaft of the motor can rotate on the central support via a bearing. The first gear is fixedly mounted on the output shaft of the motor.

[0007] The winding unit includes a first rotating shaft, a second gear, a first bevel gear, and a first one-way bearing. The first rotating shaft can rotate on the central holding bracket via the bearing, and the winding end of the first rotating shaft extends into the front end housing. The inner ring of the first one-way bearing is sleeved on the first rotating shaft. The second gear and the first bevel gear are both fixedly connected to the outer ring of the first one-way bearing, and the second gear meshes with the first gear.

[0008] The extrusion unit, driven by the first bevel gear, feeds steel wire toward the outlet shell, and the steel wire is wound onto the front end shell via the outlet shell and wound by the winding end of the first rotating shaft.

[0009] Furthermore, the extrusion unit includes a second rotating shaft, a second bevel gear, a third gear, and a fourth gear. The second rotating shaft can rotate on the central holding bracket via bearings, and the axis of the second rotating shaft intersects the axis of the first rotating shaft. The second bevel gear is fixedly mounted on the second rotating shaft and meshes with the first bevel gear. The third gear is mounted on the second rotating shaft, and the fourth gear meshes with the third gear. After meshing, the two gears can convey the steel wire toward the outlet shell.

[0010] Furthermore, both the third and fourth gears are provided with extrusion grooves, and the steel wire is located between the two extrusion grooves, with the gap between the two extrusion grooves being smaller than the outer diameter of the steel wire.

[0011] Furthermore, the extrusion unit also includes a second one-way bearing whose inner ring is sleeved on the second rotating shaft, the outer ring of the second one-way bearing being fixedly connected to the third gear, and the fourth gear being held on the central zone retaining bracket by a pin.

[0012] Furthermore, the housing also includes a first outer shell, a second outer shell, a wire shell, and a wire shell. The middle zone holding bracket, the front end shell, the drive unit, the winding unit, and the extrusion unit are all located between the first outer shell and the second outer shell. After the first outer shell and the second outer shell are assembled, the motor can be clamped between them. The wire shell is located between the first outer shell and the second outer shell and is assembled with them. The wire shell is fixed on the middle zone holding bracket and is located on one side of the extrusion unit. The wire shell and the wire shell are both provided with wire feeding channels arranged on the same axis so that the steel wire is fed through the wire shell and the wire shell and then transported by the extrusion unit to the direction of the wire exit shell.

[0013] The lead-out housing has a lead-out channel that bends toward the winding end of the first rotating shaft.

[0014] Furthermore, it also includes a fastening assembly, which includes a bolt and a nut, wherein the threaded end of the bolt passes through the first housing, the middle retaining bracket, the front housing, and the second housing, and the nut is threadedly connected to the threaded end of the bolt.

[0015] Furthermore, the second outer casing has a notch for the steel wire to pass through.

[0016] Furthermore, the winding end of the first rotating shaft has two oppositely arranged winding claws for winding the steel wire wound on the front end housing.

[0017] Furthermore, it also includes a wire feeding device located on one side of the housing. The wire feeding device includes a base, a fixing frame, a wire spool, a support, a drive element, a mounting plate, and a tensioning wheel. The fixing frame is fixed on the base, the wire spool is hung on the fixing frame, the support is fixed on the base, the drive element is fixed on the support, the output shaft of the drive element passes through the mounting plate, and the tensioning wheel is fixed on the output shaft of the drive element.

[0018] Furthermore, the front end housing is provided with studs;

[0019] It also includes a wire-cutting unit, which includes a cam, a shearing plate, a screw, and a reset component. The cam is fixed on the first rotating shaft, the threaded end of the screw passes through the shearing plate and is threadedly connected to the stud, and the reset component is sleeved on the stud and located between the shearing plate and the front end housing.

[0020] The shear plate is divided into a first segment and a second segment with the stud as the midpoint. The first segment is adjacent to the side of the cable outlet shell, and the end of the second segment is on the circumferential motion path of the cam. The length of the first segment is less than that of the second segment.

[0021] Implementing the embodiments of this utility model will have at least the following beneficial effects:

[0022] Compared with conventional manual binding methods, the binding device of this invention has the advantage of improving binding efficiency. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is an exploded view of the overall structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the overall structure assembly of this utility model;

[0026] Figure 3 This is a cross-sectional view of the overall structure of this utility model;

[0027] Figure 4 This is another internal cross-sectional view of the overall structure of this utility model;

[0028] Figure 5 This is an exploded view of part of the structure of this utility model;

[0029] Figure 6 This is a partial structural assembly diagram of the present invention;

[0030] Figure 7 This is a schematic diagram of another part of the structure and assembly of this utility model;

[0031] Figure 8 This is a schematic diagram of the overall structure of the wire feeding device in this utility model;

[0032] Figure 9 for Figure 6 Enlarged schematic diagram of the structure at point A in the middle;

[0033] Figure 10 This is a schematic diagram of the wire routing path in this utility model;

[0034] Figure 11 This is a schematic diagram showing the integration of the wire feeding device with other components;

[0035] Figure 12 This is a schematic diagram of the assembly of the front shell and the shearing unit in this utility model;

[0036] Figure 13 for Figure 12 A side sectional view;

[0037] Figure 14 for Figure 12 Side view;

[0038] Figure 15 This is a schematic diagram of the assembly of the first rotating shaft and the shearing unit in this utility model.

[0039] In the picture:

[0040] 1. Housing; 11. Middle zone retaining bracket; 12. Front end housing; 12A. Stud; 13. Outlet housing; 14. First housing; 15. Second housing; 16. Conductor housing; 17. Outlet housing;

[0041] 2. Drive unit; 21. Motor; 22. First gear;

[0042] 3. Winding unit; 31. First rotating shaft; 31A. Winding claw; 32. Second gear; 33. First bevel gear; 34. First one-way bearing;

[0043] 4. Extrusion unit; 41. Second rotating shaft; 42. Second bevel gear; 43. Third gear; 44. Fourth gear; 45. Second one-way bearing; 4A. Extrusion groove;

[0044] 5. Fastening components; 51. Bolts; 52. Nuts;

[0045] 6. Wire feeding device; 61. Base; 62. Fixing frame; 63. Wire spool; 64. Support; 65. Drive element; 66. Mounting plate; 67. Tensioner wheel;

[0046] 7. Wire cutting unit; 71. Cam; 72. Shearing plate; 73. Screw; 74. Reset component. Detailed Implementation

[0047] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0048] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0050] Reference Figure 1-7 As shown, the rebar tying equipment provided by this utility model includes: a housing 1, a drive unit 2, a winding unit 3, an extrusion unit 4, and a wire cutting unit 7.

[0051] Housing 1 includes a central zone retaining bracket 11, a front end housing 12, and a cable outlet housing 13. One end of the central zone retaining bracket 11 adjacent to the front end housing 12 is embedded in the front end housing 12, and the cable outlet housing 13 is fixedly installed on the front end housing 12.

[0052] The drive unit 2 includes a motor 21 and a first gear 22. The motor 21 is arranged toward the front housing 12, and the output shaft of the motor 21 can rotate on the central support bracket 11 through a bearing (shown but not marked in the figure). The first gear 22 is fixedly mounted on the output shaft of the motor 21.

[0053] The winding unit 3 includes a first rotating shaft 31, a second gear 32, a first bevel gear 33, and a first one-way bearing 34. The first rotating shaft 31 can rotate on the central support bracket 11 through the bearing, and the winding end of the first rotating shaft 31 extends into the front housing 12. The inner ring of the first one-way bearing 34 is sleeved on the first rotating shaft 31. The second gear 32 and the first bevel gear 33 are both fixedly connected to the outer ring of the first one-way bearing 34. The second gear 32 meshes with the first gear 22.

[0054] The extrusion unit 4 is driven by the first bevel gear 33 to feed the steel wire toward the wire exit shell 13. The steel wire is wound onto the front end shell 12 via the wire exit shell 13 and wound by the winding end of the first rotating shaft 31.

[0055] In the technical solution provided by this utility model, the motor 21 drives the first gear 22 to rotate clockwise. The second gear 32 is driven by the first gear 22 in the opposite direction of rotation. Under the action of the first one-way bearing 34, the first rotating shaft 31, the second gear 32, and the first bevel gear 33 rotate together. The extrusion unit 4 is driven by the first bevel gear 33 to feed the steel wire towards the wire outlet shell 13. The steel wire is wound onto the front end shell via the wire outlet shell 13 and wound by the winding end of the first rotating shaft 31. This improves the efficiency of winding and binding.

[0056] As exemplarily described in this embodiment, the first gear 22 rotates clockwise, while the second gear 32, the first rotating shaft 31, and the first bevel gear 33 rotate counterclockwise.

[0057] It is worth noting that the steel wire can be seamless steel wire or galvanized steel wire made of Q235A material. The outer ring of the first one-way bearing 34 rotates clockwise.

[0058] The output shaft of the aforementioned motor 21 can rotate on the central retaining bracket 11 via a bearing. This bearing can be a bearing with a bidirectional rotating outer ring, such as a ball bearing, but is not limited to this. All bearings except for unidirectional bearings described below are the same. That is, it should be understood that the bearing is embedded in the central retaining bracket 11, and the inner ring of the bearing is fitted onto the output shaft of the motor 21.

[0059] In this embodiment, the extrusion unit 4 includes a second rotating shaft 41, a second bevel gear 42, a third gear 43, and a fourth gear 44. The second rotating shaft 41 can rotate on the central support bracket 11 via a bearing (shown but not labeled in the figure), and the axis of the second rotating shaft 41 intersects the axis of the first rotating shaft 31. The second bevel gear 42 is fixedly mounted on the second rotating shaft 41 and meshes with the first bevel gear 33. The third gear 43 is mounted on the second rotating shaft 41, and the fourth gear 44 meshes with the third gear 43. After the two mesh, they can convey the steel wire towards the wire outlet shell 13.

[0060] When the first bevel gear 33 rotates, it drives the second bevel gear 42, which meshes with it, to rotate. The second rotating shaft 41 and the third gear 43 move in the same direction as the second bevel gear 42.

[0061] The second rotating shaft 41 mentioned above can rotate on the central retaining bracket 11 through the bearing. It should be understood that the bearing is embedded in the central retaining bracket 11 and the inner ring of the bearing is sleeved on the second rotating shaft 41.

[0062] In this embodiment, both the third gear 43 and the fourth gear 44 are provided with extrusion grooves 4A. The steel wire is located between the two extrusion grooves 4A. The gap between the two extrusion grooves 4A is smaller than the outer diameter of the steel wire, which provides better biting force and facilitates the conveying of the steel wire.

[0063] In this embodiment, the extrusion unit 4 further includes a second one-way bearing 45 whose inner ring is sleeved on the second rotating shaft 41. The outer ring of the second one-way bearing 45 is fixedly connected to the third gear 43, and the fourth gear 44 is held on the central holding bracket 11 by a pin. The function of the second one-way bearing 45 is to prevent the steel wire from retracting.

[0064] It is worth noting that the outer ring of the second one-way bearing 45 rotates in the opposite direction to the rotation of the rotating shaft.

[0065] In this embodiment, the housing 1 also includes a first outer shell 14, a second outer shell 15, a wire shell 16, and a wire shell 17. The middle zone holding bracket 11, the front end shell 12, the drive unit 2, the winding unit 3, and the extrusion unit 4 are all located between the first outer shell 14 and the second outer shell 15. After the first outer shell 14 and the second outer shell 15 are assembled, the motor 21 can be clamped between them. The wire shell 16 is located between the first outer shell 14 and the second outer shell 15 and is assembled with them. The wire shell 17 is fixed on the middle zone holding bracket 11 and is located on one side of the extrusion unit 4. The wire shell 16 and the wire shell 17 are both provided with wire feeding channels arranged on the same axis so that the steel wire is fed through the wire shell 16 and the wire shell 17 and then transported by the extrusion unit 4 to the direction of the wire exit shell 13.

[0066] The cable outlet housing 13 has a cable outlet channel (not shown in the figure) that bends toward the winding end of the first rotating shaft 31.

[0067] It is worth noting that the extrusion groove 4A, the lead housing 16, and the feed housing 17 are arranged on the same axis. It should be understood that the lead housing 16 and the feed housing 17 have holes / holes on the same axis as the extrusion groove 4A to form a wire feeding channel.

[0068] In this embodiment, a fastening assembly 5 is also included. The fastening assembly 5 includes a bolt 51 and a nut 52. The threaded end of the bolt 51 passes through the first housing 14, the middle retaining bracket 11, the front housing 12, and the second housing 15. The nut 52 is threadedly connected to the threaded end of the bolt 51.

[0069] In this embodiment, the second outer casing 15 has a notch (not shown in the figure) for a steel wire to pass through.

[0070] In this embodiment, the winding end of the first rotating shaft 31 has two oppositely arranged winding claws 31A to wind the steel wire wound on the front end housing 12.

[0071] In this embodiment, a wire feeding device 6 located on one side of the housing 1 is also included. The wire feeding device 6 includes a base 61, a fixing frame 62, a wire spool 63, a support 64, a driving element 65, a mounting plate 66, and a tensioning wheel 67. The fixing frame 62 is fixed on the base 61, the wire spool 63 is hung on the fixing frame 62, the support 64 is fixed on the base 61, the driving element 65 is fixed on the support 64, the output shaft of the driving element 65 passes through the mounting plate 66, and the tensioning wheel 67 is fixed on the output shaft of the driving element 65.

[0072] In practical applications, the tensioning wheel 67 has a groove on its circumference to accommodate the steel wire. The steel wire on the wire spool 63 passes through the mounting plate 66, winds around the tensioning wheel 67, passes through the mounting plate 66 again, passes through the wire housing 16 and the wire housing 17, and is then extruded by the extrusion unit 4. The driving element 65 drives the tensioning wheel 67 to rotate.

[0073] In other embodiments, tensioning pulleys 67 are provided in multiple configurations.

[0074] It is worth noting that the silk reel 63 is a product that is already widely used and mature in the market. The drive element 65 can be a servo motor.

[0075] The aforementioned thread spool 63 is hung on the fixed frame 62, which should be understood as the inner diameter of the thread spool 63 being fitted onto the shaft of the fixed frame 62.

[0076] In this embodiment, a stud 12A is provided on the front end housing 12;

[0077] It also includes a wire-cutting unit 7, which includes a cam 71, a shearing plate 72, a screw 73, and a reset member 74. The cam 71 is fixed on the first rotating shaft 31. The threaded end of the screw 73 passes through the shearing plate 72 and is threadedly connected to the stud 12A. The reset member 74 is sleeved on the stud 12A and is located between the shearing plate 72 and the front end housing 12.

[0078] The shear plate 72 is divided into a first section and a second section with the stud 12A as the midpoint. The first section is adjacent to the side of the cable outlet shell 13, and the end of the second section is on the circumferential motion path of the cam 71. The length of the first section is less than that of the second section.

[0079] As an example, cam 71 moves in the same direction as the first rotating shaft. Cam 71 presses down on the second end of the shearing plate 72, while the first end of the shearing plate 72 moves upward and forms a shearing angle with the wire outlet shell 13 to shear the steel wire. The principle here can be referred to as the principle of a seesaw.

[0080] It is worth noting that the reset component 74 can be a spring.

[0081] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A rebar tying device, characterized in that, include: The housing includes a central zone retaining bracket, a front end housing, and a cable outlet housing, wherein one end of the central zone retaining bracket adjacent to the front end housing is embedded in the front end housing, and the cable outlet housing is fixedly mounted on the front end housing; The drive unit includes a motor and a first gear. The motor is arranged toward the front end housing, and the output shaft of the motor can rotate on the central support via a bearing. The first gear is fixedly mounted on the output shaft of the motor. The winding unit includes a first rotating shaft, a second gear, a first bevel gear, and a first one-way bearing. The first rotating shaft can rotate on the central holding bracket via the bearing, and the winding end of the first rotating shaft extends into the front end housing. The inner ring of the first one-way bearing is sleeved on the first rotating shaft. The second gear and the first bevel gear are both fixedly connected to the outer ring of the first one-way bearing, and the second gear meshes with the first gear. The extrusion unit, driven by the first bevel gear, feeds steel wire toward the outlet shell, and the steel wire is wound onto the front end shell via the outlet shell and wound by the winding end of the first rotating shaft.

2. The rebar tying equipment according to claim 1, characterized in that: The extrusion unit includes a second rotating shaft, a second bevel gear, a third gear, and a fourth gear. The second rotating shaft can rotate on the central support via bearings, and the axis of the second rotating shaft intersects the axis of the first rotating shaft. The second bevel gear is fixedly mounted on the second rotating shaft and meshes with the first bevel gear. The third gear is mounted on the second rotating shaft, and the fourth gear meshes with the third gear. When meshed, the two gears can convey the steel wire toward the outlet shell.

3. The rebar tying equipment according to claim 2, characterized in that: Both the third and fourth gears are provided with extrusion grooves, and the steel wire is located between the two extrusion grooves. The gap between the two extrusion grooves is smaller than the outer diameter of the steel wire.

4. The rebar tying equipment according to claim 2, characterized in that: The extrusion unit also includes a second one-way bearing whose inner ring is sleeved on the second rotating shaft, the outer ring of the second one-way bearing being fixedly connected to the third gear, and the fourth gear being held on the central zone retaining bracket by a pin.

5. The rebar tying equipment according to claim 1, characterized in that: The housing also includes a first outer shell, a second outer shell, a wire shell, and a wire shell. The middle zone holding bracket, the front end shell, the drive unit, the winding unit, and the extrusion unit are all located between the first outer shell and the second outer shell. After the first outer shell and the second outer shell are assembled, the motor can be clamped between them. The wire shell is located between the first outer shell and the second outer shell and is assembled with them. The wire shell is fixed on the middle zone holding bracket and is located on one side of the extrusion unit. The wire shell and the wire shell are both provided with wire feeding channels arranged on the same axis so that the steel wire can be fed through the wire shell and the wire shell and then transported by the extrusion unit to the direction of the wire exit shell. The lead-out housing has a lead-out channel that bends toward the winding end of the first rotating shaft.

6. The rebar tying equipment according to claim 5, characterized in that: It also includes a fastening assembly, which includes a bolt and a nut. The threaded end of the bolt passes through the first housing, the middle retaining bracket, the front housing, and the second housing. The nut is threadedly connected to the threaded end of the bolt.

7. The rebar tying equipment according to claim 5, characterized in that: The second outer casing has a notch for the steel wire to pass through.

8. The rebar tying equipment according to any one of claims 1 or 5, characterized in that: The first rotating shaft has two oppositely arranged winding claws at its winding end for winding the steel wire wound on the front end housing.

9. The rebar tying equipment according to any one of claims 1 or 5, characterized in that: It also includes a wire feeding device located on one side of the housing. The wire feeding device includes a base, a fixing frame, a wire spool, a support, a drive element, a mounting plate, and a tensioning wheel. The fixing frame is fixed on the base, the wire spool is hung on the fixing frame, the support is fixed on the base, the drive element is fixed on the support, the output shaft of the drive element passes through the mounting plate, and the tensioning wheel is fixed on the output shaft of the drive element.

10. The rebar tying equipment according to claim 1, characterized in that: The front end housing is provided with studs; It also includes a wire-cutting unit, which includes a cam, a shearing plate, a screw, and a reset component. The cam is fixed on the first rotating shaft, the threaded end of the screw passes through the shearing plate and is threadedly connected to the stud, and the reset component is sleeved on the stud and located between the shearing plate and the front end housing. The shear plate is divided into a first segment and a second segment with the stud as the midpoint. The first segment is adjacent to the side of the cable outlet shell, and the end of the second segment is on the circumferential motion path of the cam. The length of the first segment is less than that of the second segment.

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