Automatic binding system of ribbon binding machine
By designing an automatic binding system, which utilizes cam and gear modules for drive, the automatic binding of cable ties for wire products is achieved, solving the problem of low efficiency in manual binding, improving production efficiency and reducing costs.
Patent Information
- Application Number
- CN202422263540.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-14
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-09-14
AI Technical Summary
In the current technology, the binding of cable ties for wire products mainly relies on manual operation, which is inefficient and costly.
An automatic binding system for a cable tie binding machine was designed. It utilizes a cam module and a gear module driven by a single motor to achieve automatic binding of cable ties. The system includes the coordinated operation of a locking slot, an upper hook module, a lower hook module, and a gear module.
It automates the cable tie binding process, has a simple and stable structure, fast binding speed, high efficiency, and reduces labor costs.
Smart Images
Figure CN223559916U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wire packaging technology, and in particular to an automatic binding system for a cable tie binding machine. Background Technology
[0002] For some wire products (such as cables), cable ties are needed to bind the wires during production and assembly or after processing to facilitate production and transportation (semi-finished products) or to save packaging volume (finished products). Currently, most manufacturers rely on manual labor with simple tooling to bind the cables by hand, which is inefficient and costly. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide an automatic binding system for a cable tie binding machine with high production efficiency.
[0004] To solve the above-mentioned technical problems, this utility model provides an automatic binding system for a cable tie binding machine, comprising:
[0005] The body has a slot for accommodating the cable tie head, and the bottom of the slot has a through hole for the cable tie tail to pass through.
[0006] A cam module includes a main shaft, a compound cam, a power input gear, and a power output gear. The main shaft is rotatably mounted on the main body. The compound cam and the power input gear are both fixed to the main shaft. The power output gear is rotatably sleeved on the main shaft. The compound cam has a first cam surface and a second cam surface that are spaced apart. The first and second cam surfaces are staggered, and the far repose angle of the second cam surface is greater than the sum of the lift angle and the far repose angle of the first cam surface.
[0007] The motor is connected to the power input gear transmission;
[0008] The upper hook module includes an upper hook, an upper rocker arm assembly, and an upper return spring. The upper hook is rotatably mounted on the body and rotatably connected to one end of the upper rocker arm assembly. The other end of the upper rocker arm assembly is provided with an upper rocker arm follower assembly. The upper rocker arm follower assembly includes an upper follower bearing, which is located within the working range of the first cam surface. One end of the upper return spring is connected to the body, and the other end is connected to the end of the upper rocker arm assembly near the upper rocker arm follower assembly.
[0009] A lower hook module includes a lower hook, a lower swing arm assembly, and a lower return torsion spring. The lower hook is rotatably mounted on the main body and rotatably connected to one end of the lower swing arm assembly. The lower swing arm assembly is rotatably mounted on the main body and has a lower swing arm follower assembly. The lower swing arm follower assembly includes a lower follower bearing located within the working range of the second cam surface. A stop bar is provided on one side of the lower follower bearing on the lower swing arm assembly to limit the swing amplitude of the lower follower bearing. The lower return torsion spring is sleeved on the rotating shaft of the lower swing arm assembly.
[0010] The gear module, which is connected to the power output gear transmission, includes a first driven gear set and a second driven gear set for clamping and pulling the cable tie tail.
[0011] Furthermore, the body has a cable tie track, which includes a first groove segment and a second groove segment. The cross-sectional dimension of the first groove segment is larger than the size of the cable tie head, and the cross-sectional dimension of the second groove segment is larger than the size of the cable tie tail and smaller than the size of the cable tie head. The positioning groove is located between the first and second groove segments, and the width of the positioning groove is the same as that of the first groove segment, while its depth is greater than that of the first groove segment.
[0012] Furthermore, the cam module also includes a torque controller for adjusting the output torque of the power output gear. The torque controller includes a first friction plate, a second friction plate, a spring plate, and a locking nut. The first friction plate is sandwiched between the power input gear and the power output gear. The second friction plate, the spring plate, and the locking nut are sequentially sleeved on the main shaft along the axial direction away from the main shaft of the composite cam.
[0013] Furthermore, the torque controller also includes a first isolation pad and a second isolation pad, the first and second isolation pads being sleeved on the main shaft, the first isolation pad being sandwiched between the second friction plate and the spring plate, and the second isolation pad being sandwiched between the spring plate and the locking nut.
[0014] Furthermore, a bearing swing groove is provided on the upper swing arm assembly near the upper follower bearing. A protruding post protrudes from the end of the upper follower bearing near the bearing swing groove and can swing in the bearing swing groove. In the initial state, the distance L between the bottom of the bearing swing groove and the axis of rotation of the compound cam satisfies the following relationship: L≥R1+R2+R3, where R1 represents the maximum radius of the first cam surface, R2 represents the radius of the upper follower bearing, and R3 represents the radius of the protruding post at the end of the upper follower bearing.
[0015] Furthermore, the upper swing arm assembly includes a first swing arm and a second swing arm. The first swing arm is rotatably pivotally connected to the body, and one end of it is rotatably and slidably connected to the upper hook. The second swing arm is rotatably pivotally connected to the body, and one end of it is rotatably and slidably connected to the other end of the first swing arm. The upper return spring is connected to the other end of the second swing arm, and the upper swing arm follower assembly is mounted on the second swing arm.
[0016] Furthermore, the upper swing arm follower assembly also includes an upper follower swing arm and an upper return torsion spring for resetting the upper follower bearing. The upper follower swing arm is rotatably mounted on the upper swing arm assembly, the upper follower bearing is mounted on the free end of the upper follower swing arm, and the upper return torsion spring is sleeved on the rotating shaft of the upper follower swing arm.
[0017] Furthermore, the upper swing arm follower assembly also includes a mounting base, which is fixedly mounted on the upper swing arm assembly. The upper follower swing arm is rotatably mounted on the mounting base, and the two sides of the upper return torsion spring are respectively sandwiched between the mounting base and the rotating shaft of the upper follower bearing.
[0018] Furthermore, the lower swing arm assembly includes a connecting rod and a third swing arm. The lower hook and the third swing arm are rotatably pivotally connected to both ends of the connecting rod. The third swing arm is rotatably mounted on the body. The lower swing arm follower assembly and the blocking rod are both located at one end of the third swing arm.
[0019] Furthermore, the lower swing arm follower assembly also includes a lower follower swing arm and a lower return spring for resetting the lower follower bearing. The lower follower swing arm is rotatably mounted on the lower swing arm assembly. The lower follower bearing is mounted on one end of the lower follower swing arm. One end of the lower return spring is connected to the other end of the lower follower swing arm, and the other end is connected to the other end of the lower swing arm assembly away from the lower hook.
[0020] Furthermore, a spring abutment is provided on the main body near the end of the lower swing arm assembly, and the two sides of the lower return torsion spring are respectively sandwiched between the end of the lower swing arm assembly and the spring abutment.
[0021] Furthermore, the first driven gear set includes a first driven gear shaft and a first transmission gear and a first binding gear fixedly mounted on the first driven gear shaft. The second driven gear set includes a second driven gear shaft and a second transmission gear and a second binding gear fixedly mounted on the second driven gear shaft. Both the first and second driven gear shafts are rotatably mounted on the body. The teeth of the first binding gear have the same pitch as the self-locking internal teeth on the cable tie.
[0022] Furthermore, the gear module also includes a bridge gear set, which is connected between the power output gear and the second driven gear set.
[0023] Furthermore, the bridge gear set includes a bridge gear shaft and two bridge transmission gears fixedly mounted on the bridge gear shaft. The bridge gear shaft is rotatably mounted on the body. One of the bridge transmission gears meshes with the power output gear, and the other bridge transmission gear is connected to the first transmission gear. The first transmission gear meshes with the second transmission gear.
[0024] Furthermore, the gear module also includes a third driven gear set, which includes a third driven gear shaft and a third transmission gear and a third binding gear fixed on the third driven gear shaft. The third driven gear shaft is rotatably mounted on the body. The third transmission gear meshes with one of the bridge transmission gears and simultaneously meshes with the first transmission gear. The first, second, and third binding gears are arranged in a triangular pattern. The first binding gear is located inside the cable tie, and the second and third binding gears are located outside the cable tie.
[0025] Compared with the prior art, the automatic binding system of this utility model completes the binding process entirely through a single motor-driven cam module and gear module, which has the characteristics of simple and stable structure, convenient control, fast binding speed and high efficiency. Attached Figure Description
[0026] Figure 1 This is a three-dimensional schematic diagram of a preferred embodiment of the present invention.
[0027] Figure 2 yes Figure 1 A three-dimensional schematic diagram of the main body.
[0028] Figure 3 yes Figure 2 A schematic diagram of a partial structure of the main body is shown.
[0029] Figure 4 This is a schematic diagram showing the cable tie positioned at the end of the cable tie track within the body.
[0030] Figure 5 yes Figure 1 A schematic diagram of the power transmission between the motor and the cam module.
[0031] Figure 6 yes Figure 1 Exploded view of the cam module.
[0032] Figure 7 yes Figure 1 A schematic diagram of the transmission between the upper and middle hook module and the compound cam.
[0033] Figure 8 yes Figure 7 A schematic diagram of the structure of the second pendulum arm and the upper pendulum arm assembly.
[0034] Figure 9 is Figure 8 The diagram shows the transmission direction of the second rocker arm, the upper rocker arm follower assembly, and the compound cam.
[0035] Figure 10 yes Figure 1 A schematic diagram of the installation and transmission of the lower hook module and the composite cam.
[0036] Figure 11 yes Figure 10 A schematic diagram of the structure of the third pendulum and the lower pendulum follower assembly.
[0037] Figure 12 yes Figure 10 The diagram shows a schematic representation of the transmission direction of the third rocker arm and the compound cam.
[0038] Figure 13 yes Figure 1 A schematic diagram of the structure of the intermediate gear module.
[0039] Figure 14 yes Figure 13 The diagram shows the structure of the gear module from another angle.
[0040] Figure 15 yes Figure 13 The diagram shows the process of binding the gear module with cable ties.
[0041] Figure 16 yes Figure 1 The illustrated embodiment is a plan view in its initial state.
[0042] Figure 17 yes Figure 16 The illustrated embodiment is a planar schematic diagram of the product to be bound placed inside.
[0043] Figure 18 yes Figure 17 The illustrated embodiment is a plan view of the lower hook being closed.
[0044] Figure 19 yes Figure 18 The illustrated embodiment is a plan view of the cable tie being inserted into place.
[0045] Figure 20 yes Figure 19 The illustrated embodiment is a planar schematic diagram of the upper hook rotating to drive the cable tie tail.
[0046] Figure 21 yes Figure 20The illustrated embodiment is a planar schematic diagram of the gear module pulling the cable tie.
[0047] Figure 22 yes Figure 21 The illustrated embodiment is a plan view of the motor reversing and the cable tie retracting in the opposite direction. Detailed Implementation
[0048] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0049] Please see Figure 1 This is a preferred embodiment of the present utility model. The automatic binding system of the cable tie binding machine is mainly applicable to the automatic binding of nylon cable ties. It includes a body 1, a cam module, a motor 2, an upper hook module, a lower hook module, and a gear module.
[0050] Please refer to the following: Figures 2 to 4 The main body 1 provides mounting supports for the various functional structures of the automatic binding system and also provides a track for the movement of cable tie A. In this embodiment, the main body 1 has a cable tie track 101, which is a square channel with open entrance and exit, and closed on all other sides. The bottom of the cable tie track 101 has a positioning groove 102 for accommodating the cable tie head, and the bottom of the positioning groove 102 has a through hole 103 for the cable tie tail to pass through. The cable tie track 101 includes a first groove segment 1011 and a second groove segment 1012. The cross-sectional dimension of the first groove segment 1011 is larger than the size of the cable tie head, and the entire cable tie A can pass through the first groove segment 1011. The cross-sectional dimension of the second groove segment 1012 is larger than the size of the cable tie tail and smaller than the size of the cable tie head. The positioning groove 102 is located between the first and second groove segments 1011 and 1012, and its width is the same as that of the first groove segment 1011, while its depth is greater than that of the first groove segment 1011. During the binding process, cable tie A enters the main body 1 through the inlet at one end of the cable tie track 101. After cable tie A passes through the first groove section 1011, the cable tie head stops and is locked in the locking groove 102. The cable tie tail passes through the second groove section 1012 and exits from the outlet of the cable tie track 101. Figure 4 The image shows the final binding position of cable tie A.
[0051] Please refer to the following: Figure 5 and Figure 6The cam module includes a rotatable main shaft 3, a compound cam 4, a power input gear 5, a power output gear 6, and a torque controller for adjusting the output torque of the power output gear 6. The motor 2 is connected to the power input gear 5. In this embodiment, a gear 201 is fixed to one end of the power output shaft of the motor 2. The gear 201 meshes with an idler gear 202, which in turn meshes with the power input gear 5. The power input gear 5 rotates synchronously with the main shaft 3 to receive power from the front-end motor 2 and transmit it to the gear module. The compound cam 4 rotates synchronously with the main shaft 3 to drive the upper hook module and the lower hook module.
[0052] The main shaft 3 is perpendicular to the cable tie track 101 and rotatably mounted on the body 1. In this embodiment, the main shaft 3 is mounted on the body 1 via a bearing 7, which is located between the power input gear 5 and the compound cam 4. The main shaft 3 is fixed to the inner ring of the bearing 7 and can rotate with the inner ring of the bearing 7. The outer ring of the bearing 7 is fixed to the body 1, while the inner ring can rotate freely, supporting the rotational movement of the cam module. The compound cam 4 is located on one side of the body 1 and is fixedly sleeved on the main shaft 3. In this embodiment, the compound cam 4 is connected to the main shaft 3 by a key, and the compound cam 4 can rotate synchronously with the main shaft 3. The compound cam 4 has a first cam surface 401 and a second cam surface 402 that are spaced apart. The first and second cam surfaces 401 and 402 are spaced apart and staggered along the axial direction of the compound cam 4. The far repose angle of the second cam surface 402 is greater than the sum of the lift angle and the far repose angle of the first cam surface 401, so as to ensure that the upper hook module and the lower hook module can be in working state at the same time (see the following description).
[0053] The power input gear 5, power output gear 6, and torque controller are located on the other side of the main body 1. The power input gear 5 is fixed to the main shaft 3, and the power output gear 6 is located to one side of the power input gear 5 and is rotatably mounted on the main shaft 3. The torque controller adjusts the output torque of the power output gear 6. During the rotation of the main shaft 3, when the resistance experienced by the power output gear 6 is less than or equal to the torque, the power output gear 6 rotates synchronously with the main shaft 3; conversely, when the resistance experienced by the power output gear 6 is greater than the torque, the power output gear 6 will not rotate with the main shaft 3, thus disengaging from the main shaft 3.
[0054] In this embodiment, the torque controller includes a first friction plate 8, a second friction plate 9, a spring plate 10, and a locking nut 11. The first friction plate 8 is sandwiched between the power input gear 5 and the power output gear 6. The second friction plate 9, the spring plate 10, and the locking nut 11 are sequentially sleeved on the main shaft 3 along the axial direction away from the compound cam 4. Furthermore, the torque controller also includes a first isolation pad 12 and a second isolation pad 13, which are sleeved on the main shaft 3. Specifically, the first isolation pad 12 is sandwiched between the second friction plate 9 and the spring plate 10, and the second isolation pad 13 is sandwiched between the spring plate 10 and the locking nut 11. Specifically, one side of the power input gear 5 is flush with the first friction plate 8, allowing it to move synchronously with the main shaft 3. The first friction plate 8 has two sides that are flat against the power input gear 5 and the power output gear 6, respectively; the power output gear 6 has two sides that are flat against the first and second friction plates 8 and 9, respectively; the second friction plate 9 has two sides that are flat against the first isolation pad 12 and the power output gear 6, respectively; the first isolation pad 12 has two sides that are flat against the spring 10 and the second friction plate 9, respectively, and can move axially along the main shaft 3 and rotate synchronously with the main shaft 3; the spring 10 has two sides that are flat against the first and second isolation pads 12 and 13, respectively; the second isolation pad 13 has two sides that are flat against the locking nut 11 and the spring 10, respectively, and can move axially along the main shaft 3 and rotate synchronously with the main shaft 3. The locking nut 11 is fixedly connected to the main shaft 3 by threads and can rotate synchronously with the main shaft 3.
[0055] The principle by which the torque controller adjusts the output torque of the power output gear 6 is roughly as follows:
[0056] The power output gear 6 has first and second friction plates 8 and 9 on both sides, respectively. The outer surfaces of the first and second friction plates 8 and 9 are in contact with the sides of the power input gear 5 and the first isolation pad 12, respectively. Since the power input gear 5 and the first isolation pad 12 rotate synchronously with the main shaft 3, as long as there is a certain pressure between the first isolation pad 12, the second friction plate 9, the power output gear 6, the first friction plate 8, and the power input gear 5 in the axial direction of the main shaft 3, there will be friction between them. Therefore, the first and second friction plates 8 and 9 will rotate with the power input gear 5 and the first isolation pad 12, and the power output gear 6 will also rotate with the first and second friction plates 8 and 9. The rotational force of the power output gear 6 is the frictional force between it and the first and second friction plates 8 and 9. The magnitude of this frictional force is related to the pressure between these parts. Adjusting the pressure can control the rotational torque of the power output gear 6. Among the parts group fitted on the main shaft 3, except for the shaped spring 10 whose thickness can change with the pressure, the thickness of the others remains constant. When these components are sequentially mounted on the main shaft 3, the first friction plate 8 is pressed against the power input gear 5 (which is fixed to the main shaft 3 and remains stationary). When the locking nut 11 is screwed inward along the threads of the main shaft 3, the entire assembly of parts will come into close contact; the further inward, the tighter the spring plate 10 is pressed, increasing the pressure between the parts. Conversely, screwing the locking nut 11 outward will loosen the spring plate 10, decreasing the pressure between the parts. Thus, by adjusting the position of the locking nut 11 on the side, the pressure between the parts can be varied, and the rotational torque of the power output gear 6 will also change accordingly. During the rotation of the main shaft 3, when the resistance experienced by the power output gear 6 is less than or equal to the torque generated by the first and second friction plates 8 and 9, the power output gear 6 will rotate synchronously with the main shaft 3. Conversely, when the resistance experienced by the power output gear 6 is greater than the torque generated by the first and second friction plates 8 and 9, the power output gear 6 will not rotate with the main shaft 3, thus disengaging from the main shaft 3.
[0057] Please refer to the following: Figure 7 and Figure 8The upper hook module includes an upper hook 14, an upper rocker arm assembly, and an upper return spring 15. The upper hook 14 is hook-shaped and rotatably mounted on the body 1 via an upper hook pivot 16, and rotatably connected to one end of the upper rocker arm assembly. The other end of the upper rocker arm assembly is provided with an upper rocker arm follower assembly, which includes an upper follower rocker arm 17, an upper follower bearing 18, and an upper return torsion spring 19 for resetting the upper follower bearing 18. The upper follower rocker arm 17 is rotatably mounted on the upper rocker arm assembly. The upper follower bearing 18 is mounted on the free end of the upper follower rocker arm 17, close to the compound cam 4, and within the working range of the first cam surface 401. The upper return torsion spring 19 is sleeved on the pivot of the upper follower rocker arm 17. One end of the upper return spring 15 is connected to the body 1, and the other end is connected to the end of the upper rocker arm assembly near the upper rocker arm follower assembly.
[0058] Specifically, the upper swing arm assembly includes a first swing arm 20 and a second swing arm 21. The first swing arm 20 is rotatably pivotally connected to the body 1 via a first swing arm pivot 22, and one end of it is rotatably and slidably connected to the upper hook 14. The second swing arm 21 is rotatably pivotally connected to the body 1 via a second swing arm pivot 23, and one end of it is rotatably and slidably connected to the other end of the first swing arm 20. An upper return spring 15 is connected to the other end of the second swing arm 21. In this embodiment, one end of the first swing arm 20 has a first swing arm waist-shaped groove 2001, and an upper hook connecting post 1401 protrudes from the upper hook 14, which is located in the first swing arm waist-shaped groove 2001. One end of the second swing arm 21 is provided with a second swing arm waist-shaped groove 2101, and the other end of the first swing arm 20 protrudes from the first swing arm connecting post 2002, which is located in the second swing arm waist-shaped groove 2101. The upper swing arm follower assembly is mounted on the second swing arm 21. In this embodiment, the upper swing arm follower assembly also includes a mounting base 24, which is fixedly mounted on the upper swing arm assembly. The upper follower swing arm 17 is rotatably mounted on the mounting base 24, and the two sides of the upper return torsion spring 19 are respectively sandwiched between the mounting base 24 and the rotating shaft of the upper follower bearing 18.
[0059] like Figure 9 As shown, the main body 1 is provided with a blocking pin 104. In the initial state, the second rocker arm 21 and its components are acted upon by the upper return spring 15 and are close to the blocking pin 104. At this time, the upper follower rocker arm 17 is in the right extreme position under the action of the upper return torsion spring 19, and the outer surface of the upper follower bearing 18 can just contact the lowest position of the first cam surface 401.
[0060] When the compound cam 4 is as follows Figure 9When the positions shown in (a) and 9(b) are rotated clockwise, the cam raises the curved surface, and the first cam surface 401 on the compound cam 4 drives the upper follower bearing 18 to swing to the right. Since the upper follower rocker arm 17 is already at its rightmost extreme position, the second rocker arm 21 will only rotate counterclockwise (i.e., away from the direction of the compound cam 4) around the second rocker arm pivot 23 together with the upper rocker arm follower assembly. When the compound cam 4 rotates clockwise, the second rocker arm 21 and its components will swing in accordance with the changes in the working surface of the first cam surface 401. During the swinging process of the second rocker arm 21, the second rocker arm waist groove 2101 on the second rocker arm 21 can drive the first rocker arm connecting column 2002, so that the first rocker arm 20 can rotate clockwise around the first rocker arm pivot 22. Subsequently, the first rocker arm waist groove 2001 drives the upper hook connecting column 1401, so that the upper hook 14 follows the upper hook pivot 16 and rotates counterclockwise. Thus, when the compound cam 4 rotates clockwise one revolution, the upper hook 14 follows the first cam surface 401 to achieve a certain angle of rotation.
[0061] When the compound cam 4 rotates counterclockwise, the upper hook 14 is designed to disengage by reversing, preventing it from swinging along with the compound cam 4. Specifically, a bearing swing groove 2103 is provided on the upper rocker arm assembly near the upper follower bearing 18 (in this embodiment, the bearing swing groove 2103 is located on the second rocker arm 21), and a protrusion 1801 protrudes from the end of the upper follower bearing 18 near the bearing swing groove 2103, allowing it to swing within the bearing swing groove 2103.
[0062] like Figure 9 As shown in (d), the distance L between the bottom of the bearing swing groove 2103 and the axis of rotation of the compound cam 4 satisfies the following relationship: L≥R1+R2+R3. Where R1 represents the maximum radius of the first cam surface 401, R2 represents the radius of the upper follower bearing 18, and R3 represents the radius of the end protrusion 1801 of the upper follower bearing 18. Thus, the upper follower bearing 18 can swing around the swing support axis within the bearing swing groove 2103, and when the upper follower bearing 18 is at the highest position of the first cam surface 401 (e.g., when...), the distance L between the bottom of the bearing swing groove 2103 and the axis of rotation of the compound cam 4 satisfies the following relationship: L≥R1+R2+R3. Figure 9 (d) As shown, it will not touch the limit position of the bearing swing groove 2103 (i.e., the bottom of the bearing swing groove 2103).
[0063] like Figure 9As shown in (c) and 9(d), in the initial state, the second rocker arm 21 and its components are acted upon by the upper return spring 15 and are close to the blocking pin 104. At this time, the upper follower rocker arm 17 is in the right limit position under the action of the upper return torsion spring 19, and the outer surface of the upper follower bearing 18 can just contact the lowest position of the first cam surface 401. When the compound cam 4 rotates counterclockwise, the cam raises the surface, and the first cam surface 401 on the compound cam 4 drives the upper follower bearing 18 to swing to the left. During this process, since the bearing groove 2103 corresponding to this direction is relatively long (L≥R1+R2+R3), even if the upper follower bearing 18 is in the highest position of the first cam surface 401, the protrusion 1801 on the upper follower bearing 18 does not touch the left limit position of the bearing groove 2103. Therefore, at this time, only the upper follower bearing 18 swings, but the second rocker arm 21 does not follow the rotation of the compound cam 4. This allows the compound cam 4 to rotate clockwise, with the second rocker arm 21 and the upper hook 14 rotating accordingly; when the compound cam 4 rotates counterclockwise, the second rocker arm 21 and the upper hook 14 remain stationary, achieving follow-up separation. For the entire upper hook module, as long as the tension torque of the upper return spring 15 is much greater than the torque of the upper return torsion spring 19, then during the counterclockwise rotation of the compound cam 4, the second rocker arm 21 will remain stationary, always close to the blocking pin 104, while only the upper follower rocker arm 17 swings independently, thus achieving separation between the rocker arm and the cam.
[0064] During the clockwise and counterclockwise rotation of the composite cam 4, when the working surface of the composite cam 4 passes the highest point of the first cam surface 401, the second rocker arm 21 can be reset under the action of the upper return spring 15, so that the second rocker arm 21 is close to the blocking pin 104. At the same time, the upper follower bearing 18 can be reset under the action of the upper return torsion spring 19 and is in the right limit position.
[0065] Please refer to the following: Figure 10 and Figure 11The lower hook module includes a lower hook 25, a lower swing arm assembly, and a lower return torsion spring 26. The lower hook 25 is hook-shaped, and together with the upper hook 14, it encloses a binding operation space for the product to be bound. Both the upper hook 14 and the lower hook 25 have grooves on the side near the binding operation space, with the center of the grooves on the same plane as the center of the cable tie track 101. The lower hook 25 is rotatably mounted on the body 1 via a lower hook pivot 27 and is rotatably connected to one end of the lower swing arm assembly. The lower swing arm assembly is rotatably mounted on the body 1 and has a lower swing arm follower assembly. The lower swing arm follower assembly includes a lower follower swing arm 28, a lower follower bearing 29, and a lower return spring 30 for resetting the lower follower bearing 29. The lower follower rocker arm 28 is rotatably mounted on the lower rocker arm assembly. The lower follower bearing 29 is mounted on one end of the lower follower rocker arm 28, close to the compound cam 4, and within the working range of the second cam surface 402. One end of the lower return spring 30 is connected to the other end of the lower follower rocker arm 28, and the other end is connected to the other end of the lower rocker arm assembly away from the lower hook 25. A stop bar 31 for limiting the swing amplitude of the lower follower bearing 29 is provided on one side of the lower rocker arm assembly. The lower return torsion spring 26 is sleeved on the rotating shaft of the lower rocker arm assembly. Specifically, the lower rocker arm assembly includes a connecting rod 32 and a third rocker arm 33. The lower hook 25 and the third rocker arm 33 are rotatably pivotally connected to both ends of the connecting rod 32. The third rocker arm 33 is rotatably mounted on the body 1 through the rocker arm rotating shaft 34. The lower rocker arm follower assembly and the stop bar 31 are both located at one end of the third rocker arm 33, and the lower return spring 30 is connected to the other end of the third rocker arm 33. A spring pin 105 is provided on the main body 1 near the end of the lower swing arm assembly, and the two sides of the lower return torsion spring 26 are respectively sandwiched between the end of the lower swing arm assembly and the spring pin 105.
[0066] like Figure 12 As shown, the main body 1 is provided with a blocking pin 106. In the initial state, the second cam surface 402 of the compound cam 4 is at the lowest position. At this time, under the action of the lower return torsion spring 26, the third rocker arm 33 is close to the blocking pin 106, and the lower follower rocker arm 28 is close to the blocking rod 31 on the lower rocker arm assembly under the pulling force of the lower return spring 30. At this time, the lower follower bearing 29 is just in contact with the lowest position of the second cam surface 402.
[0067] like Figure 12 As shown in (a) and 12(b), when the compound cam 4 rotates clockwise as shown in the figure (e.g. Figure 12(a) In the direction indicated in ①), the working surface of the compound cam 4 gradually rises from the lowest surface. The second cam surface 402 drives the lower follower bearing 29 to move away from the compound cam 4 (i.e., towards the direction of the stop rod 31). Due to the obstruction of the stop rod 31, the lower follower bearing 29 cannot rotate around its axis, thus driving the third rocker arm 33 to rotate counterclockwise (i.e., away from the direction of the compound cam 4, such as...). Figure 12 (a) In the direction indicated in (②), the third swing arm 33 pushes the lower hook 25 to rotate through the connecting rod 32, causing the lower hook 25 to rotate counterclockwise (e.g. Figure 12 (a) The direction indicated in the middle ③).
[0068] When the compound cam 4 rotates counterclockwise, the lower hook 25 automatically disengages due to the reverse rotation of the lower rocker arm assembly, ensuring that the lower hook 25 does not follow the rotation of the compound cam 4. Figure 12 (c) and Figure 12 As shown in (d), in the initial state, the second cam surface 402 of the compound cam 4 is at its lowest position. At this time, under the action of the lower return torsion spring 26, the third rocker arm 33 is close to the blocking pin 106, and the lower follower rocker arm 28 is close to the blocking rod 31 on the lower rocker arm assembly under the pulling force of the lower return spring 30. At this time, the lower follower bearing 29 is just in contact with the lowest position of the second cam surface 402.
[0069] When compound cam 4 rotates counterclockwise (as shown in the image) Figure 12 (c) In the direction indicated by ⑤, starting from the lowest surface of the second cam surface 402, the second cam surface 402 drives the lower bearing 29 to rotate clockwise (i.e., move away from the cam direction, that is, away from the direction of the stop rod 31, such as...). Figure 12 (c) In the direction indicated in (⑥), the rotational force of the compound cam 4 is greater than the tension of the lower return spring 30. The lower follower rocker arm 28 rotates around its axis following the compound cam 4. At this time, the third rocker arm 33 will not follow the rotation of the compound cam 4 and will not follow. Correspondingly, the connecting rod 32 will not drive the lower hook 25 to swing. Therefore, this structure realizes that when the compound cam 4 rotates clockwise, the third rocker arm 33 and the lower hook 25 can swing; when the compound cam 4 rotates counterclockwise, the third rocker arm 33 and the lower hook 25 do not move, thus realizing follower separation. During the counterclockwise rotation of the compound cam 4, as long as the force direction of the lower follower bearing 29 is away from the direction of the blocking rod 31, then except for the lower follower rocker arm 28 rotating around its support axis, the third rocker arm 33, the connecting rod 32, and the lower hook 25 will not follow.
[0070] During the clockwise and counterclockwise rotation of the composite cam 4, when the working surface of the composite cam 4 passes the highest point of the second cam surface 402, the third rocker arm 33 can be reset under the action of the lower reset torsion spring 26, so that the third rocker arm 33 is close to the blocking pin 106. At the same time, the lower follower bearing 29 can be reset under the action of the lower reset spring 30, so that the lower follower bearing 29 is close to the blocking rod 31 on the lower rocker arm assembly.
[0071] Please refer to the following: Figure 13 and Figure 14 The gear module is connected to the power output gear 6 and includes a first driven gear set 35 and a second driven gear set 36 for clamping and pulling the cable tie tail. The first driven gear set 35 includes a first driven gear shaft 3501 and a first transmission gear 3502 and a first binding gear 3503 fixedly mounted on the first driven gear shaft 3501. In this embodiment, the first transmission gear 3502 and the first binding gear 3503 are both integral with the first driven gear shaft 3501 and are arranged vertically along the axial direction. The second driven gear set 36 includes a second driven gear shaft 3601 and a second transmission gear 3602 and a second binding gear 3603 fixedly mounted on the second driven gear shaft 3601. In this embodiment, the second transmission gear 3602 and the second binding gear 3603 are both integral with the second driven gear shaft 3601 and are arranged vertically along the axial direction. The first and second driven gear shafts 3501 and 3601 are rotatably mounted on the body 1 via bearings. The teeth of the first binding gear 3503 have the same pitch as the self-locking internal teeth on the cable tie, and the two can mesh.
[0072] When cable tie A is tied, the power output gear 6 drives the first transmission gear 3502, which in turn drives the second transmission gear 3602. The first and second tying gears 3503 and 3603 rotate together with the first and second transmission gears 3502 and 3602, respectively. The cable tie tail passes between the first and second tying gears 3503 and 3603. The first tying gear 3503 meshes with the self-locking internal teeth of cable tie A. As the first tying gear 3503 rotates, the cable tie tail is clamped between the first and second tying gears 3503 and 3603 and is pulled along with it.
[0073] Furthermore, the aforementioned gear module also includes a bridge gear set 37, which is driveably connected between the power output gear 6 and the first driven gear set 35. The bridge gear set 37 includes a bridge gear shaft 3701 and two bridge transmission gears 3702 fixedly mounted on the bridge gear shaft 3701. In this embodiment, both bridge transmission gears 3702 are integral with the bridge gear shaft 3701, and are arranged vertically along the axial direction. The bridge gear shaft 3701 is rotatably mounted on the body 1 via bearings. One bridge transmission gear 3702 meshes with the power output gear 6, and the other bridge transmission gear 3702 is driveably connected to the first transmission gear 3502. The first transmission gear 3502 meshes with the second transmission gear 3602.
[0074] To ensure more stable meshing between the first binding gear 3503 and the internal teeth of the cable tie A, the gear module further includes a third driven gear set 38. The third driven gear set 38 includes a third driven gear shaft 3801 and a third transmission gear 3802 and a third binding gear 3803 fixedly mounted on the third driven gear shaft 3801. In this embodiment, the third driven gear shaft 3801 is rotatably mounted on the body 1 via bearings. The third transmission gear 3802 and the third binding gear 3803 are both integral with the third driven gear shaft 3801 and are arranged vertically along the axial direction. The first, second, and third binding gears 3503, 3603, and 3803 are triangularly distributed, with the first binding gear 3503 located inside the cable tie A, and the second and third binding gears 3603 and 3803 located outside the cable tie A. This ensures maximum meshing between the first binding gear 3503 and the internal teeth of the cable tie A, resulting in the most stable meshing and the greatest binding tension of the cable tie A.
[0075] The first, second, and third transmission gears 3502, 3602, and 3802, along with one of the bridge transmission gears 3702, are located on the same side. Similarly, the first, second, and third binding gears 3503, 3603, and 3803, along with the other bridge transmission gear 3702, are also located on the same side. Power transmission from the aforementioned gear module is performed in the following manner:
[0076] Power is transmitted from the power output gear 6 to one of the intermediate transmission gears 3702, then through another intermediate transmission gear 3702 to the third transmission gear 3802, and then from the third transmission gear 3802 to the first transmission gear 3502. The first transmission gear 3502 drives the second transmission gear 3602. The first, second, and third binding gears 3503, 3603, and 3803 form a cable tie binding gear set. The teeth of the first binding gear 3503 contact the inner teeth of the cable tie A, while the second and third binding gears 3603 and 3803 contact the cable tie A from the back.
[0077] Please refer to the following: Figure 15When tying cable tie A, the cable tie head of cable tie A is engaged in the corresponding slot 102 of the main body 1. The cable tie tail, under the action of the upper hook 14, passes through the inner hole of the cable tie head and enters the space between the first and second tying gears 3503 and 3603 through the through hole 103 at the bottom of the slot 102. The first and second tying gears 3503 and 3603 rotate continuously, and the back of cable tie A is pushed forward by the second tying gear 3603. The teeth of the first binding gear 3503 instantly mesh with the inner teeth of the tail of cable tie A. Cable tie A moves forward under the pulling force of the meshing teeth of the first binding gear 3503. Then, the back of cable tie A contacts the third binding gear 3803. The third binding gear 3803 supports the back of cable tie A, causing the other teeth on the inner side of cable tie A to mesh with the teeth of the first binding gear 3503 again. In this way, the tail of cable tie A is pulled forward by the combined action of the first, second, and third binding gears 3503, 3603, and 3803 (hereinafter referred to as the "cable tie binding gear set") until the cable tie loop becomes the smallest and the product is tied the tightest. Finally, the cable tie binding gear set locks and stops. At this time, the resistance of the cable tie binding gear set will increase instantaneously. This resistance is greater than the output force set by the power output gear 6, and the power output gear 6 and the main shaft 3 will disengage, without affecting the continued rotation of the main shaft 3 and the motor 2. After cable tie A is tightened, motor 2 and main shaft 3 reverse. At this time, the cable tie binding gear set will also reverse. The tail of cable tie A will exit the gear as the cable tie binding gear set reverses. Finally, the tied product cable tie A can be removed from the automatic binding system.
[0078] In this embodiment, the main body 1 has an air blowing pipe for blowing air onto the gear module, which can clean the gear module by blowing air. Specifically, the main body 1 is provided with an air blowing inlet 107, and the main body 1 is provided with an air blowing pipe connected to the air blowing inlet 107. The outlet end of the air blowing pipe is located between the gear sets of the gear module.
[0079] The aforementioned automatic binding system achieves binding through the movement and stopping of motor 2, controlled by a machine control system. Its working process is roughly as follows:
[0080] like Figure 16 As shown, the automatic binding system is at the origin position. At this time, the motor 2 is stationary and at the origin position. The upper hook 14 and the lower hook 25 are not closed, and their free ends have a certain opening.
[0081] like Figure 17 As shown, place the product B to be bound into a suitable position within the binding operation space from the opening.
[0082] like Figure 18As shown, motor 2 starts to rotate at an angle and then stops. At this time, the cam module rotates at an angle, and the lower hook 25 is driven to swing at an angle and stay there. At this time, the opening between the upper hook 14 and the lower hook 25 is closed. In this way, a closed loop is formed between the body 1, the upper hook 14 and the lower hook 25, which serves as the binding operation space.
[0083] like Figure 19 As shown, cable tie A is rapidly blown into the cable tie track 101 by high-pressure gas. Cable tie A enters along the first groove section 1011, and its tail end passes through the grooves on the second groove section 1012 and the upper hook 14 and lower hook 25. Finally, the cable tie head stops at the locking groove 102, thus cable tie A is delivered into place. By properly designing the circumference of the entire annular groove through the locking groove 102, upper hook 14, and lower groove 25, ensuring its length is within a suitable range (theoretically less than the length of cable tie A), cable tie A can be delivered smoothly into place without getting stuck during the feeding process.
[0084] like Figure 20 As shown, motor 2 continues to rotate forward, driving the cam module to continue rotating. At this time, the upper hook 14 is driven by the compound cam 4 to rotate to a set angle. During the rotation, it pushes the cable tie tail forward. The cable tie tail passes through the locking hole of the cable tie head and the through hole 103 at the bottom of the locking groove 102, extending straight between the first and second binding gears 2703 and 2803. Since the far repose angle of the second cam surface 402 is greater than the sum of the lift angle and the far repose angle of the first cam surface 401, the lower hook 25 remains closed during this process.
[0085] like Figure 21 As shown, since the cable tie binding gear set rotates synchronously with the motor 2, when the cable tie tail is pushed by the upper hook 14, the first binding gear 3503 will instantly mesh with the inner teeth of the cable tie A, thereby pulling the cable tie A forward until the cable tie A tightly binds the product B and stops (at this time, the power output gear 6 will disengage). During this process, under the action of the upper return spring 15 and the upper return torsion spring 19, the upper hook 14 and the upper follower bearing 18 reset. At the same time, under the action of the lower return torsion spring 26 and the lower return spring 30, the lower hook 25 and the lower follower bearing 29 reset. In this way, both the upper hook 14 and the lower hook 25 return to their original positions.
[0086] like Figure 22 As shown, motor 2 moves forward to the set angle (at which point cable tie A is already tightened). Then, motor 2 reverses back to the origin, the gear module reverses accordingly, and the cable tie tail exits the gear module synchronously. Finally, the tied product B can be removed from the automatic binding system through the opening between the upper hook 14 and the lower hook 25, completing the binding process.
[0087] The automatic binding system of this utility model adopts a cam module. The binding process of cable ties A is completely completed by a single motor 2 driving the cam module and gear module in coordination with the control program. It has the characteristics of simple and stable structure, convenient control, fast binding speed and high efficiency, and is particularly suitable for use in fully automated production lines for cable tie binding.
[0088] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An automatic binding system for a cable tie binding machine, characterized in that, include: The body has a slot for accommodating the cable tie head, and the bottom of the slot has a through hole for the cable tie tail to pass through. A cam module includes a main shaft, a compound cam, a power input gear, and a power output gear. The main shaft is rotatably mounted on the main body. The compound cam and the power input gear are both fixed to the main shaft. The power output gear is rotatably sleeved on the main shaft. The compound cam has a first cam surface and a second cam surface that are spaced apart. The first and second cam surfaces are staggered, and the far repose angle of the second cam surface is greater than the sum of the lift angle and the far repose angle of the first cam surface. The motor is connected to the power input gear transmission; The upper hook module includes an upper hook, an upper rocker arm assembly, and an upper return spring. The upper hook is rotatably mounted on the body and rotatably connected to one end of the upper rocker arm assembly. The other end of the upper rocker arm assembly is provided with an upper rocker arm follower assembly. The upper rocker arm follower assembly includes an upper follower bearing, which is located within the working range of the first cam surface. One end of the upper return spring is connected to the body, and the other end is connected to the end of the upper rocker arm assembly near the upper rocker arm follower assembly. A lower hook module includes a lower hook, a lower swing arm assembly, and a lower return torsion spring. The lower hook is rotatably mounted on the main body and rotatably connected to one end of the lower swing arm assembly. The lower swing arm assembly is rotatably mounted on the main body and has a lower swing arm follower assembly. The lower swing arm follower assembly includes a lower follower bearing located within the working range of the second cam surface. A stop bar is provided on one side of the lower follower bearing on the lower swing arm assembly to limit the swing amplitude of the lower follower bearing. The lower return torsion spring is sleeved on the rotating shaft of the lower swing arm assembly. The gear module, which is connected to the power output gear transmission, includes a first driven gear set and a second driven gear set for clamping and pulling the cable tie tail.
2. The automatic binding system of the cable tie binding machine as described in claim 1, characterized in that, The body has a cable tie track, which includes a first groove segment and a second groove segment. The cross-sectional dimension of the first groove segment is larger than the size of the cable tie head, and the cross-sectional dimension of the second groove segment is larger than the size of the cable tie tail and smaller than the size of the cable tie head. The positioning groove is located between the first and second groove segments. The width of the positioning groove is the same as that of the first groove segment, and its depth is greater than that of the first groove segment.
3. The automatic binding system of the cable tie binding machine as described in claim 1, characterized in that, The cam module also includes a torque controller for adjusting the output torque of the power output gear. The torque controller includes a first friction plate, a second friction plate, a spring plate, and a locking nut. The first friction plate is sandwiched between the power input gear and the power output gear. The second friction plate, the spring plate, and the locking nut are sequentially sleeved on the main shaft along the axis away from the composite cam.
4. The automatic binding system of the cable tie binding machine as described in claim 3, characterized in that, The torque controller further includes a first isolation pad and a second isolation pad. The first and second isolation pads are sleeved on the main shaft. The first isolation pad is sandwiched between the second friction plate and the spring plate, and the second isolation pad is sandwiched between the spring plate and the locking nut.
5. The automatic binding system of the cable tie binding machine as described in claim 1, characterized in that, The upper rocker arm assembly has a bearing rocker groove near the upper follower bearing. The end of the upper follower bearing near the bearing rocker groove protrudes with a protrusion that can swing in the bearing rocker groove. In the initial state, the distance L between the bottom of the bearing rocker groove and the axis of rotation of the compound cam satisfies the following relationship: L≥R1+R2+R3, where R1 represents the maximum radius of the first cam surface, R2 represents the radius of the upper follower bearing, and R3 represents the radius of the protrusion at the end of the upper follower bearing.
6. The automatic binding system of the cable tie binding machine as described in claim 1, characterized in that, The upper swing arm assembly includes a first swing arm and a second swing arm. The first swing arm is rotatably pivotally connected to the body, and one end of the first swing arm is rotatably and slidably connected to the upper hook. The second swing arm is rotatably pivotally connected to the body, and one end of the second swing arm is rotatably and slidably connected to the other end of the first swing arm. The upper return spring is connected to the other end of the second swing arm, and the upper swing arm follower assembly is mounted on the second swing arm.
7. The automatic binding system of the cable tie binding machine as described in claim 1, characterized in that, The upper swing arm follower assembly further includes an upper follower swing arm and an upper return torsion spring for resetting the upper follower bearing. The upper follower swing arm is rotatably mounted on the upper swing arm assembly. The upper follower bearing is mounted on the free end of the upper follower swing arm. The upper return torsion spring is sleeved on the rotating shaft of the upper follower swing arm.
8. The automatic binding system of the cable tie binding machine as described in claim 7, characterized in that, The upper swing arm follower assembly also includes a mounting base, which is fixedly mounted on the upper swing arm assembly. The upper follower swing arm is rotatably mounted on the mounting base, and the two sides of the upper return torsion spring are respectively sandwiched between the mounting base and the rotating shaft of the upper follower bearing.
9. The automatic binding system of the cable tie binding machine as described in claim 1, characterized in that, The lower swing arm assembly includes a connecting rod and a third swing arm. The lower hook and the third swing arm are rotatably pivotally connected to both ends of the connecting rod. The third swing arm is rotatably mounted on the main body. The lower swing arm follower assembly and the blocking rod are both located at one end of the third swing arm.
10. The automatic binding system of the cable tie binding machine as described in claim 1, characterized in that, The lower swing arm follower assembly further includes a lower follower swing arm and a lower return spring for resetting the lower follower bearing. The lower follower swing arm is rotatably mounted on the lower swing arm assembly. The lower follower bearing is mounted on one end of the lower follower swing arm. One end of the lower return spring is connected to the other end of the lower follower swing arm, and the other end is connected to the other end of the lower swing arm assembly away from the lower hook.
11. The automatic binding system of the cable tie binding machine as described in claim 1, 9, or 10, characterized in that, A spring pin is provided on the main body near the end of the lower swing arm assembly, and the two sides of the lower return torsion spring are respectively sandwiched between the end of the lower swing arm assembly and the spring pin.
12. The automatic binding system of the cable tie binding machine as described in claim 1, characterized in that, The first driven gear set includes a first driven gear shaft and a first transmission gear and a first binding gear fixedly mounted on the first driven gear shaft. The second driven gear set includes a second driven gear shaft and a second transmission gear and a second binding gear fixedly mounted on the second driven gear shaft. Both the first and second driven gear shafts are rotatably mounted on the body. The teeth of the first binding gear have the same pitch as the self-locking internal teeth on the cable tie.
13. The automatic binding system of the cable tie binding machine as described in claim 12, characterized in that, The gear module also includes a bridge gear set, which is connected between the power output gear and the second driven gear set.
14. The automatic binding system of the cable tie binding machine as described in claim 13, characterized in that, The bridge gear set includes a bridge gear shaft and two bridge transmission gears fixed on the bridge gear shaft. The bridge gear shaft is rotatably mounted on the body. One of the bridge transmission gears meshes with the power output gear, and the other bridge transmission gear is connected to the first transmission gear. The first transmission gear meshes with the second transmission gear.
15. The automatic binding system of the cable tie binding machine as described in claim 14, characterized in that, The gear module further includes a third driven gear set, which includes a third driven gear shaft, a third transmission gear and a third binding gear fixed on the third driven gear shaft. The third driven gear shaft is rotatably mounted on the body. The third transmission gear meshes with one of the bridge transmission gears and simultaneously meshes with the first transmission gear. The first, second and third binding gears are triangularly distributed, with the first binding gear located inside the cable tie and the second and third binding gears located outside the cable tie.