Full-automatic ribbon mounting machine head module

Abstract

The utility model discloses a full-automatic ribbon mounting machine head module, and belongs to the field of wiring harness production automation equipment. The device comprises a ribbon positioning and pushing jig, an upper guide buckling claw, a lower guide buckling claw, a guide seat, a ribbon cutter and a ribbon pulling ratchet wheel which are mounted on a module base body, when the upper guide buckling claw and the lower guide buckling claw are closed, the arc-shaped groove in the inner side and the groove in the top of the guide base can jointly form a guide groove allowing a binding belt to enter. A ribbon cutter and a ribbon pulling ratchet wheel are sequentially arranged below the ribbon leading-in hole, the ribbon cutter can move front and back to cut off the ribbon, and the ribbon pulling ratchet wheel can drive the ribbon to move downwards by rotating around a shaft. The structure is compact, the front portion is narrow, the rear portion is wide, the front working area is compact, and the robot is allowed to enter a narrow space to work; the ribbon is wide in compatibility, or various ribbons can be used by quickly and simply replacing a small number of parts; the tensioning force is convenient and visual to adjust, and the tensioning force is accurate and stable to control.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of harness production automation equipment, and specifically relates to a full-automatic cable tie installation head module, which can automatically complete cable tie feeding, bundling, tightening, cutting and other work and is compact in structure. BACKGROUND

[0002] In the field of harness production such as automobile harness, household appliance harness and engineering machinery harness, two types of cable ties are used on the harness. One type of cable tie is used to bundle the scattered harness, that is, the so-called ordinary nylon cable tie, which is simple in structure and uniform in specification. The second type of cable tie is used to fix and install the formed harness on a structural member. The structure of the cable tie is more complex and diverse than that of the ordinary nylon cable tie, and a cable tie head for fixing and installation is added to the structure. At present, in the field of harness production, there is a good solution to realize full-automatic installation of the first type of cable tie, including automatic feeding, automatic bundling, tightening and cutting. However, for the second type of cable tie, most of the harness production links are still manually pre-installed with the cable tie, and a semi-automatic cable tie gun is used for final tightening and cutting. There are also a few links that use the so-called semi-automatic cable tie installation equipment to complete automatic buckling, tightening and cutting of the cable tie. However, the work process needs to manually place the cable tie in the buckle guide groove each time, and the equipment only completes the subsequent automatic buckling, tightening and cutting. In addition, the adaptability of the cable tie is narrow, and each type of cable tie needs to be replaced with corresponding buckle guide grooves and other parts. The operation mode is low in efficiency and high in labor intensity, and there are other problems: 1. The existing semi-automatic equipment is bulky in structure and large in size, especially the transverse size of the front work area, which affects the application in a narrow space (close to the connector or too close to the adjacent cable tie position); 2. The cable tie tension adjustment relies on mechanical structure, which has small adjustment range, non-intuitive and non-simple adjustment mode, poor tension control precision and stability; and 3. The automatic feeding demand of the cable tie cannot be met.

[0003] With the increasing demand for automation in the field of harness production, there is an urgent need for an automatic cable tie installation equipment for the second type of cable tie, which has the following characteristics: 1. compact structure, especially the transverse size of the front cable tie bundling work part; 2. wide adaptability of the cable tie, or the use of multiple types of cable tie through quick and simple replacement of a small number of parts; 3. convenient and intuitive cable tie tension adjustment, and accurate and stable tension control; and 4. good connection with the automatic cable tie feeding system in the structural design. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at overcoming the defects in the prior art and providing a full-automatic cable tie installation head module.

[0005] The specific technical scheme adopted by the utility model is as follows:

[0006] The utility model provides a full -automatic ribbon installation machine head module, including the ribbon positioning and pushing jig, upper guide claw, lower guide claw, guide seat, ribbon cutter and pull belt ratchet wheel of installation on the module base body,

[0007] The front end of the ribbon positioning and pushing jig is provided with a profiled positioning hole that can be fixed by elastic tension and the ribbon head mounting part; the upper guide claw and the lower guide claw can rotate around the fulcrum to open and close, respectively; the arc-shaped grooves on the inner sides of the two can form a guide groove with the groove on the top of the guide seat when they are closed, and the lower guide claw can rotate inward along the upper guide claw to guide and buckle the ribbon into the ribbon hole of the ribbon; the internal space surrounded by the guide groove can accommodate the wire harness to be bundled, and the ribbon positioning and pushing jig can drive the ribbon to move forward and send the ribbon into the guide groove; the guide seat is located at the initial section of the guide groove, and a ribbon introduction hole below the ribbon hole is formed on the guide seat; the ribbon cutter and the pull belt ratchet wheel are sequentially arranged below the ribbon introduction hole, the ribbon cutter can move forward and backward to cut the ribbon, and the pull belt ratchet wheel can drive the ribbon to move downward by rotating around the shaft.

[0008] Preferably, the ribbon positioning and pushing jig is installed on the module base body through a jig installation base; the jig installation base is provided with a pushing jig driving belt for driving the ribbon positioning and pushing jig to move forward and backward along the length direction of the ribbon.

[0009] Preferably, the front end of the ribbon positioning and pushing jig is provided with a vertical positioning end face, the positioning end face can cooperate with the ribbon head installation positioning face of the ribbon head to realize the positioning of the ribbon in the length direction; a horizontal profiled positioning hole is formed in the middle of the positioning end face; the profiled positioning hole is a smooth wall counterbore, and the size of the hole wall satisfies the cooperation with the peripheral size of the one-way locking detent of the ribbon head and forms sufficient elastic tension to keep the two fixed.

[0010] Preferably, the upper guide claw is located in front of the movement of the ribbon positioning and pushing jig, and includes a clamping jaw on the front side and a connecting rod on the rear side; the clamping jaw is an arc-shaped structure protruding upward, and an arc-shaped groove for accommodating the ribbon is formed on the inner side; the connecting rod is provided with an upper guide claw avoiding cavity through which the ribbon head can pass, and the lower end is rotationally connected with the module base body.

[0011] Preferably, the lower guide claw is an arc-shaped structure concave downward, an arc-shaped groove for accommodating the ribbon is formed on the inner side, and the bottom is rotationally connected with the module base body through a rotary fulcrum; the lower guide claw is connected with the electric control linear actuator through a lower guide claw transmission mechanism to realize rotational driving.

[0012] Further, the arc-shaped groove front part guide contour of the upper guide claw is in concentric state with the rotary fulcrum.

[0013] As preferred, a cutter cylinder is fixed on the module base, the output end of the cutter cylinder is connected with the ribbon cutter through a cutter driving arm and a cylinder connecting arm in sequence, and the ribbon cutter can be driven to move forward and backward by the cutter cylinder.

[0014] As preferred, the ribbon ratchet is coaxially fixed on the ratchet driving shaft, the ratchet driving shaft is connected with the servo motor fixed on the module base through a ribbon ratchet driving belt to realize driving; the periphery of the ribbon ratchet is provided with ratchet teeth consistent with the pitch of the one-way teeth on the ribbon, so that the ribbon is tensioned and driven to move downward by meshing; the other side of the ribbon ratchet located at the meshing position of the ribbon is provided with an arc-shaped ribbon guiding and pressing member; the surface of the side of the ribbon guiding and pressing member in contact with the ribbon is smooth, and the other side is provided with a ribbon pressing spring; the ribbon guiding and pressing member can tightly adhere to the ribbon and the ribbon ratchet to the meshing state by the elastic force of the ribbon pressing spring.

[0015] As preferred, a ribbon waste discharge channel fixed on the module base is arranged below the ribbon ratchet, and the ribbon waste discharge channel is used for discharging and collecting the waste ribbon tail after shearing; a waste discharge channel extension member is further arranged at the tail end of the ribbon waste discharge channel.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. Compact structure, with the structure size of narrow front and wide back, compact front working area, allowing access to narrow space work;

[0018] 2. Wide ribbon compatibility, or can realize the use of multiple ribbons by quickly and easily replacing a small number of parts;

[0019] 3. Convenient and intuitive tension adjustment, and accurate and stable tension control;

[0020] 4. With bundling failure detection function, can adapt to automatic production;

[0021] 5. Can be connected to an automatic feeding system to realize fully automated production. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 、 Figure 2 It is the overall structure schematic diagram of the device in two kinds of visual angle;

[0023] Figure 3 It is used for describing the structure characteristics of the device with narrow front and wide back;

[0024] Figure 4 The state of the device in the initial preparation state is described;

[0025] Figure 5 This describes the basic structure of the second type of cable tie and how the positioning and pushing fixture utilizes the commonalities of cable ties for positioning.

[0026] Figure 6 This is used to describe the state of the device of this utility model when fastening the wire harness;

[0027] Figure 7 This is used to describe the state of the device of this utility model in the pre-feeding stage of cable ties;

[0028] Figure 8 This is used to describe the state of the device of this utility model in the initial fastening stage of the cable tie;

[0029] Figure 9 This describes the state of the device in the cable tie tightening stage;

[0030] Figure 10 This describes the state of the device during the final tightening stage of the cable tie, and the tightening principle.

[0031] Figure 11 This describes the state of the device in the cutting stage after the cable tie is tightened.

[0032] Figure 12 This describes the state of the device after the wire harness has completed a cable tie binding process.

[0033] The attached figures are labeled as follows: 1. Cable harness; 2. Cable tie; 201. Cable tie head; 202. Cable tie strap; 203. Cable tie head mounting part; 204. Cable tie head mounting positioning surface; 205. One-way locking tooth; 206. Cable tie after installation; 207. Cable tie tail waste; 3. Module base; 4. Cable tie positioning and pushing fixture; 401. Contouring positioning hole; 402. Positioning end face; 5. Fixture mounting base; 6. Upper guide claw; 601. Upper guide claw clearance cavity; 7. Lower guide claw; 701. Rotation fulcrum; 701. Lower guide claw transmission. Mechanism 8, Electrically controlled linear actuator 9, Guide seat 10, Cable tie inlet hole 101, Cable tie cutter 11, Cutter drive arm 12, Cylinder connecting arm 13, Cutter cylinder 14, Cable tie pull ratchet 15, Ratchet drive shaft 16, Cable tie guide clamping component 17, Cable tie clamping spring 18, Cable tie waste discharge channel 19, Waste discharge channel extension component 20, Servo motor 21, Cable tie pull ratchet drive belt 22, Push fixture drive belt 23, Front dimension A of cable tie head module, Rear dimension B of cable tie head module. Detailed Implementation

[0034] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below. Technical features in various embodiments of this utility model can be combined appropriately without conflict.

[0035] In the description of this utility model, it should be understood that when an element is considered to be "connected" to another element, it can be directly connected to the other element or indirectly connected, i.e., there is an intermediate element. Conversely, when an element is said to be "directly" connected to another element, there is no intermediate element.

[0036] In this utility model, for ease of description, ... Figure 1 The directions "left," "right," "up," and "down" are used to illustrate the positional relationships of the components in this utility model device. "Front" and "rear" refer to... Figure 1 The left and right sides of the image. Unless otherwise specified, the positional relationship of this utility model is described in this way.

[0037] like Figure 1 and 2 As shown, this utility model provides a fully automatic cable tie installation head module. The device mainly includes a cable tie positioning and pushing fixture 4, an upper guide claw 6, a lower guide claw 7, a guide seat 10, a cable tie cutter 11, and a cable tie ratchet 15, all mounted on the module base 3. These mechanisms cooperate to achieve the fully automatic cable tie installation function for wire harnesses. The cooperation process is described below.

[0038] like Figure 1 and Figure 2 As shown, the module base 3 serves as the base of the entire mechanism, upon which the remaining functional components are mounted. The specific form of the module base 3 described above can be adjusted according to actual needs; its main function is to provide mounting positions for each functional mechanism. Considering aesthetics and convenience, the module base 3 can be designed as an L-shaped structure, such as... Figure 3 As shown, the front dimension A of the cable tie head module is smaller than the rear dimension B, meaning the module base 3 has a structure that is narrower at the front and wider at the rear. The front of the module base 3 is equipped with components such as an upper guide claw 6, a lower guide claw 7, a guide seat 10, a cable tie cutter 11, and a cable tie puller 15. At the rear of the head module is a cable tie pushing mechanism consisting of a cable tie positioning and pushing fixture 4, a fixture mounting base 5, and a drive belt.

[0039] In the device of this utility model, such as Figure 5 As shown, the front end of the cable tie positioning and pushing fixture 4 is provided with a contour positioning hole 401 that can be fixed by the tension of the cable tie head mounting part 203.

[0040] In a preferred embodiment of this utility model, the front end of the cable tie positioning and pushing fixture 4 is provided with a contour positioning hole 401 and a positioning end face 402. The positioning end face 402 is vertically positioned and can cooperate with the cable tie head mounting positioning surface 204 of the cable tie head 201 to jointly achieve the positioning of the cable tie 2 in the length direction. A horizontal contour positioning hole 401 is formed in the middle of the positioning end face 402, and the positioning end face 402 is perpendicular to the contour positioning hole 401. The contour positioning hole 401 is a smooth-walled countersunk hole. The cross-sectional shape and size of the hole only need to meet the basic shape positioning requirements of the cable tie head mounting part (203), and do not need to be completely contoured, simplifying the design. The hole wall is required to be smooth, and the hole wall size should meet the requirements of cooperating with the outer dimensions of the one-way locking teeth 205 of the cable tie head 201 and forming sufficient elastic tension to keep the two fixed.

[0041] In a preferred embodiment of this utility model, the cable tie positioning and pushing fixture 4 is mounted on the module base 3 via a fixture mounting base 5. A pushing fixture drive belt 23 is arranged on the fixture mounting base 5 to drive the cable tie positioning and pushing fixture 4 to move back and forth along the length of the cable tie 2.

[0042] In the device of this utility model, both the upper guide claw 6 and the lower guide claw 7 can rotate along the fulcrum to open and close. When closed, the arc-shaped groove on the inner side can form a guide groove with the groove on the top of the guide seat 10 to allow the cable tie 202 to enter. The lower guide claw 7 can continue to rotate inward along the upper guide claw 6 to guide the cable tie 202 and fasten it into the cable hole of the cable tie 2. The internal space enclosed by the guide groove can accommodate the wire harness 1 to be bundled. The cable tie positioning and pushing fixture 4 can drive the cable tie 2 to move forward and send the cable tie 202 into the guide groove.

[0043] As a preferred embodiment of this utility model, such as Figure 1 As shown, the main structure of the upper guide claw 6 is consistent with that of a conventional cable tie machine's guide claw, and it is equipped with a guide groove adapted to the cable tie width. In this embodiment, the upper guide claw 6 is located in front of the cable tie positioning and pushing fixture 4, and includes a front gripper and a rear connecting rod. The gripper has an upwardly convex arc-shaped structure, and an arc-shaped groove for accommodating the cable tie 202 is provided on its inner side. The connecting rod is provided with an upper guide claw clearance cavity 601 that allows the cable tie head 201 to pass through, and its lower end is rotatably connected to the module base 3. In actual use, the upper guide claw 6 can move between two positions, referred to as closed and open, such as... Figure 4 and Figure 6The cable tie has two states: closed, so that the cable tie 202 can be guided into the cable tie hole; and open, so that the cable tie head 201 can pass through smoothly or be removed after the binding is completed. It should be noted that the position of the upper guide claw 6 coincides with the path of the cable tie 2 being pushed. When setting it, the upper guide claw clearance cavity 601 needs to be taken into account so that the cable tie 2 and the cable tie positioning and pushing fixture 4 can pass smoothly to the designated position.

[0044] As a preferred embodiment of this utility model, such as Figure 1 As shown, the main structure of the lower guide claw 7 is consistent with that of a conventional cable tie machine's guide claw, and it also has a guide groove adapted to the cable tie width. In this embodiment, the lower guide claw 7 is a concave arc-shaped structure with an arc-shaped groove on its inner side for accommodating the cable tie 202. Its bottom is rotatably connected to the module base 3 via a pivot point 701. The lower guide claw 7 is connected to the electrically controlled linear actuator 9 via the lower guide claw transmission mechanism 8 to achieve rotational drive. That is to say, the lower guide claw 7 in this embodiment is also provided with a pivot point 701, allowing it to rotate around the pivot point. When the upper guide claw 6 is closed, it can be engaged to form a closed guide loop for guiding the cable tie 202 into the cable tie hole. The upper guide claw 6 is configured such that when it is in the closed state described above, its front contour, including the guide groove and the outer contour of the mating part, is concentric with the pivot point 701 (that is, the front guide contour of the arc groove of the upper guide claw 6 is concentric with the pivot point 701). In this way, the lower guide claw 7 can have an additional continuous fastening stroke when it is fastened, which can be used for the active fastening of cable ties or for adapting to different cable tie specifications and lengths.

[0045] In a preferred embodiment of this utility model, the lower guide pawl transmission mechanism 8 connects the lower guide pawl 7 and the electrically controlled linear actuator 9, and is used to transmit the power of the electrically controlled linear actuator 9 to the lower guide pawl 7. Its arrangement serves two purposes: a. It can change the direction of force transmission, allowing the electrically controlled linear actuator 9 to be arranged more flexibly, thus achieving a compact structural design; b. It increases the transmission speed, amplifying the swing amplitude of the lower guide pawl 7. In this embodiment, the lower guide pawl 7 and the lower guide pawl transmission mechanism 8 are driven by a gear structure meshing (e.g., Figure 1 (As shown). However, it should be clarified that in practical applications, both linkage transmission and rack and pinion transmission can achieve the same transmission effect, and the specific configuration can be selected according to the actual situation. The electrically controlled linear actuator 9 is the driving mechanism of the lower guide pawl 7. It should be a stepper or servo linear driver, such as a stepper screw motor, stepper linear motor, servo linear motor, etc. In this way, the lower guide pawl 7 can perform the locking movement in a controllable manner.

[0046] In the device of this utility model, the guide seat 10 is located in the initial section of the guide groove, and a cable tie inlet hole 101 is provided on it below the cable tie hole.

[0047] In a preferred embodiment of this utility model, the guide seat 10 is arranged below the cable tie fastening position and is a guide support component. Its function is to provide initial guidance for the cable tie head when pushing the cable tie and to provide support for the cable tie when it is finally tightened. A cable tie inlet hole 101 is arranged on it to guide the cable tie to the pull ratchet 15.

[0048] In the device of this utility model, a cable tie cutter 11 and a cable tie ratchet 15 are arranged in sequence below the cable tie inlet hole 101. The cable tie cutter 11 can move back and forth to cut the cable tie 202, and the cable tie ratchet 15 can drive the cable tie 202 to move downward by rotating around the axis.

[0049] In a preferred embodiment of this utility model, a cutting cylinder 14 is fixed on the module base 3. The output end of the cutting cylinder 14 is connected to the cable tie cutter 11 via a cutting drive arm 12 and a cylinder connecting arm 13. The cutting cylinder 14 can drive the cable tie cutter 11 to move back and forth. Specifically, the cable tie cutter 11 is arranged below the guide seat 10 and cooperates with the cable tie inlet hole 101 to complete the cutting action of the cable tie. The cutting cylinder 14 drives the cable tie cutter 11 to cut the cable tie through the cutting drive arm 12 and the cylinder connecting arm 13. The arrangement of the cutting drive arm 12 and the cylinder connecting arm 13 is to extend the cutting cylinder 14 to the bottom rear position of the machine head module, which is beneficial to achieving a compact and narrow width design at the front of the machine head. It should be noted that the arrangement position of the cylinder connecting arm 13 coincides with the direction of discharge of the cable tie tail waste 207, and its structure should take into account the setting of clearance space.

[0050] In a preferred embodiment of this invention, the pull ratchet 15 is coaxially fixed to the ratchet drive shaft 16. The ratchet drive shaft 16 is connected to the servo motor 21 fixed on the module base 3 via the pull ratchet drive belt 22 for drive. The pull ratchet 15 has ratchet teeth arranged around its circumference with the same pitch as the unidirectional teeth on the cable tie 202. This ensures that the pull ratchet 15 can effectively mesh with the unidirectional teeth of the cable tie when tightening it, preventing slippage and guaranteeing precise and stable final tension. The ratchet drive shaft 16 and the pull ratchet 15 are connected by a key for torque transmission. One end of the ratchet drive shaft 16 has synchronous gear teeth. The servo motor 21, located behind the head module, drives the ratchet drive shaft via the pull ratchet drive belt 22, thereby rotating the pull ratchet 15.

[0051] In a preferred embodiment of this utility model, an arc-shaped cable tie guide clamping member 17 is provided on the other side of the engagement point between the pull ratchet 15 and the cable tie 202. The surface of the cable tie guide clamping member 17 in contact with the cable tie 202 is smooth, and a cable tie clamping spring 18 is provided on the other side. Through the elastic force of the cable tie clamping spring 18, the cable tie guide clamping member 17 can tightly press the cable tie 202 and the pull ratchet 15 into an engaged state. In actual use, the cable tie guide clamping member 17 can be made of wear-resistant material with a smooth working surface. Its function is to firmly press the cable tie 202 into an engaged state with the pull ratchet 15 under the action of the clamping spring 18, and provide a certain coverage angle to ensure the number of meshing teeth and further prevent slippage during tightening. At the same time, it can also adapt to changes in cable tie thickness to avoid jamming.

[0052] In a preferred embodiment of this utility model, a cable tie waste discharge channel 19, fixed to the module base 3, is provided below the cable tie ratchet 15. The cable tie waste discharge channel 19 is used to discharge and collect the sheared cable tie tail waste 207. A waste discharge channel extension 20 is also provided at the tail end of the cable tie waste discharge channel 19. The waste discharge channel extension 20 is used to extend the discharge channel to a favorable position or to connect a discharge extension pipe for collecting waste.

[0053] Based on the above-mentioned fully automatic cable tie installation head module, this utility model also provides a fully automatic cable tie installation method, which is as follows:

[0054] S1, Initial Preparation Phase:

[0055] like Figure 4 As shown, in the initial preparation state, the cable tie positioning and pushing fixture 4 is in the rear loading position. The cable tie 2 is fixed to the cable tie positioning and pushing fixture 4 through the cable tie head mounting part 203 engaging with the contour positioning hole 401, and the length direction of the cable tie 2 is parallel to the moving direction of the cable tie positioning and pushing fixture 4, completing the filling work. The upper guide claw 6 rotates upward to the open state, and the lower guide claw 7 rotates downward to the lower swing position, and the claw assembly composed of the upper guide claw 6 and the lower guide claw 7 is in the open state. The wire harness 1 to be bundled is moved into the opening of the claw assembly, waiting for the cable tie 2 to be bundled and installed.

[0056] S2, Claw Engagement Stage:

[0057] like Figure 6 As shown, rotate the upper guide claw 6 downwards to the closed state, so that the upper guide claw clearance cavity 601 is in a vertical state to allow the cable tie head 201 to pass through. Rotate the lower guide claw 7 upwards through the electronically controlled linear actuator 9 until it closes with the upper guide claw 6 to form a closed state, clamping the bundled wire harness 1 in the clamping area.

[0058] The degree of engagement of the lower guide claw 7 at this stage depends on the length of the cable tie being applied, so that when the cable tie is pushed to the working position in the next stage (i.e., S3), the cable tie head does not prematurely penetrate into the cable tie hole position.

[0059] S3, Cable tie pre-delivery stage:

[0060] like Figure 7 As shown, the cable tie positioning and pushing fixture 4 is driven forward by the drive belt 23, pushing the cable tie 2 to the binding position, so that the end of the guide groove of the upper guide claw 6 is aligned vertically with the cable tie hole and cable tie inlet hole (101) of the cable tie 2, and also aligned with the lower cable tie inlet hole 101. During the pushing process, the cable tie 202 sequentially follows the groove on the top of the guide seat 10, the arc groove on the inner side of the lower guide claw 7, and the arc groove on the inner side of the upper guide claw 6, so that the first end is guided to the position above the cable tie hole.

[0061] S4, Cable tie fastening stage:

[0062] like Figure 8 As shown, at the beginning of this stage, the servo motor 21 starts operating in torque mode, driving the belt 22 via the pull ratchet to rotate the pull ratchet 15 in a direction that can move the cable tie 202 downward (in this embodiment, it rotates according to the pull direction shown in the figure). The torque mode setting value of the servo motor 21 corresponds proportionally to the tension force required by the pull ratchet 15 to finally tighten the cable tie 2. At the same time, the electronically controlled linear actuator 9 drives the lower guide claw 7 to rotate further inward and engage, forcing the first end of the cable tie 202 to pass through the cable tie hole and the cable tie inlet hole 101 in sequence and reach the pull ratchet 15, which is already in a rotating state. Under the action of the cable tie guide clamping member 17 and the cable tie clamping spring 18, the ratchet teeth of the pull ratchet 15 and the one-way teeth of the cable tie are tightly engaged.

[0063] S5, Cable tie tightening stage:

[0064] like Figure 9 As shown, as the pull belt ratchet 15 continues to rotate, it causes the cable tie 2 to continue to tighten.

[0065] S6, tensioning stage according to set torque:

[0066] like Figure 10 As shown, when the cable tie 2 is further tightened, the force exerted by the cable tie 2 on the pull ratchet 15 increases sharply, eventually balancing with the torque set by the servo motor 21, and the servo motor 21 and the pull ratchet 15 stop rotating. At this point, the force exerted on the cable tie 2 has met the preset tension, and the tightening of the cable tie 2 is complete.

[0067] During this process, the working status is determined by monitoring the servo motor 21: if the speed of the servo motor 21 does not decrease to the target speed (theoretically, it should stop, which is determined by the torque mode characteristics of the servo motor) or the output torque of the servo motor does not increase to the target value within a preset time, it is judged as an abnormal situation, including failure of cable tie 2 to be inserted or failure to successfully engage with the pull ratchet 15 after insertion, and feedback is given in a timely manner. If the speed of the servo motor 21 decreases to the target speed or the output torque of the servo motor 21 does not increase to the target value within a preset time, it is judged as normal operation, and then the cable tie positioning and pushing fixture 4 is driven to return to the initial position and the filling work is performed.

[0068] S7, Cable tie cutting stage:

[0069] like Figure 11 As shown, once the cable tie 2 is determined to be tightened to the correct position, the cutter cylinder 14 actuates, driving the cable tie cutter 11 to complete the cutting action via the cutter drive arm 12 and the cylinder connecting arm 13. At this time, the servo motor 21 is still in torque working mode. At the instant the cable tie 2 is cut, the balance force of the pull ratchet 15 is broken, and the cable tie tail waste 207 is discharged through the cable tie waste discharge channel 19 during the constant torque acceleration process. During this stage, the cable tie positioning and pushing fixture 4 located behind can simultaneously complete the filling of new material to save cycle time.

[0070] S8, Binding completion stage:

[0071] like Figure 12 As shown, when the cable tie 2 is successfully cut, the clip assembly opens, and the upper guide clip 6 and lower guide clip 7 rotate back to their initial states. At this time, the wire harness 1 has completed the automatic cable tie bundling work, and together with the installed cable tie 206, it retracts from the bundling area.

[0072] In actual operation, the wire harness 1 to be bundled can be moved sequentially into the opening of the clip assembly, and S2 to S8 can be repeated to achieve the automatic bundling of the continuous cable ties of the wire harness 1.

[0073] The specific innovative features of this utility model device are as follows:

[0074] 1. An electrically controlled linear actuator is arranged at the lower guide claw (or movable guide claw) to drive the lower guide claw to move in multiple strokes and positions as needed, which is different from the conventional movable guide claw which can only move in a single stroke, two positions or at most two strokes, three positions and is fixed and cannot be adjusted.

[0075] 2. A servo motor drives the cable tie ratchet, which, in conjunction with the cable tie fastening mechanism, ensures one-way gear engagement between the ratchet and the cable tie, preventing slippage. This allows the precise and controllable torque output of the servo motor to be directly converted into the required tension of the cable tie. This is because the servo motor's torque mode can output a stable torque with high precision, and the torque value can be easily controlled and changed. Furthermore, the torque output can be monitored directly to identify any abnormalities, such as whether the cable tie has been successfully threaded or properly tightened.

[0076] 3. Considering that all the second type of cable ties mentioned above share a common feature, namely that the head mounting part of this type of cable tie, regardless of its shape, is equipped with a one-way locking tooth structure (such as...). Figure 5 As shown in the figure, component 205 has a one-way locking tooth similar to a barb structure. When used for installation in thin-walled holes, it can provide one-way insertion and reverse locking, which is used in actual wire harness wiring installation. When used in smooth-walled deep holes, it has a certain elastic force and can be used as a holding force for temporary fixation, but it does not affect reverse disengagement from the countersunk hole. Based on the above features, this utility model uses an end face and smooth-walled countersunk holes arranged on the end face to realize the positioning fixture for cable ties. The end face is used for axial positioning of the cable tie head mounting surface (204 in Figure 5), the smooth-walled countersunk hole is used for contour positioning of the cable tie head (not necessarily complete contouring, only contouring to meet the positioning purpose), and the one-way locking tooth 205 fits tightly with the side wall of the countersunk hole to provide holding force during fixation. The above positioning fixture can serve as a pushing mechanism during cable tie installation and can also be well integrated with the automatic cable tie feeding system, because transferring the cable tie from the outlet of the automatic cable tie feeding system to the above positioning fixture is a simple and conventional operation that only requires gripping and insertion. Unlike conventional cable tie fixing and transfer fixtures, which require complex contoured grooves for positioning and additional retaining mechanisms to secure the cable ties, this positioning fixture only requires replacing one part with a corresponding simple cavity when using different sizes of cable ties.

[0077] 4. Reconsider the structural layout, arranging mechanisms longitudinally as much as possible and avoiding transverse arrangements, to make the machine head layout more compact and achieve a structural dimension that is narrower at the front and wider at the back (e.g., Figure 3 (As shown) It is more suitable for integration into other automated equipment, such as robotic arms or production line integration.

[0078] The embodiments described above are merely preferred solutions of this utility model, and are not intended to limit the scope of this utility model. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this utility model. Therefore, all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of this utility model.

Claims

1. A fully automatic cable tie installation head module, characterized in that, Includes a cable tie positioning and pushing fixture (4), an upper guide claw (6), a lower guide claw (7), a guide seat (10), a cable tie cutter (11), and a cable tie ratchet (15) mounted on the module base (3); The front end of the cable tie positioning and pushing fixture (4) is provided with a contoured positioning hole (401) that can be fixed to the cable tie head mounting part (203) by elastic tension; the upper guide claw (6) and the lower guide claw (7) can rotate along the fulcrum to open and close respectively. When they are closed, the arc-shaped groove on the inner side can form a guide groove for the cable tie (202) to enter together with the groove on the top of the guide seat (10), and the lower guide claw (7) can continue to rotate inward along the upper guide claw (6) to guide the cable tie (202) and fasten it into the cable tie hole of the cable tie (2); the guide groove forms a The internal space can accommodate the wire harness (1) to be bundled. The cable tie positioning and pushing fixture (4) can drive the cable tie (2) forward and send the cable tie (202) into the guide groove. The guide seat (10) is located in the initial section of the guide groove and has a cable tie inlet hole (101) located below the cable tie hole. Below the cable tie inlet hole (101) are a cable tie cutter (11) and a pull ratchet (15). The cable tie cutter (11) can move back and forth to cut the cable tie (202). The pull ratchet (15) can drive the cable tie (202) to move downward by rotating around the axis.

2. The fully automatic cable tie installation head module according to claim 1, characterized in that, The cable tie positioning and pushing fixture (4) is mounted on the module base (3) via the fixture mounting base (5); the fixture mounting base (5) is provided with a pushing fixture drive belt (23) for driving the cable tie positioning and pushing fixture (4) to move back and forth along the length of the cable tie (2).

3. The fully automatic cable tie installation head module according to claim 1, characterized in that, The front end of the cable tie positioning and pushing fixture (4) is provided with a vertical positioning end face (402). The positioning end face (402) can cooperate with the cable tie head mounting positioning surface (204) of the cable tie head (201) to achieve the positioning of the cable tie (2) in the length direction. A horizontal contour positioning hole (401) is provided in the middle of the positioning end face (402). The contour positioning hole (401) is a smooth wall countersunk hole. The hole wall size meets the requirements of cooperating with the outer size of the one-way locking tooth (205) of the cable tie head (201) and forming sufficient elastic tension to keep the two fixed.

4. The fully automatic cable tie installation head module according to claim 1, characterized in that, The upper guide claw (6) is located in front of the cable tie positioning and pushing fixture (4), and includes a front claw and a rear connecting rod; the claw is an upwardly convex arc structure, and an arc groove for accommodating the cable tie (202) is opened on the inner side; the connecting rod is provided with an upper guide claw clearance cavity (601) that allows the cable tie head (201) to pass through, and the lower end is rotatably connected to the module base (3).

5. The fully automatic cable tie installation head module according to claim 1, characterized in that, The lower guide claw (7) is a concave arc-shaped structure with an arc-shaped groove on the inner side for accommodating the cable tie (202). The bottom is rotatably connected to the module base (3) through the fulcrum (701). The lower guide claw (7) is connected to the electric linear actuator (9) through the lower guide claw transmission mechanism (8) to achieve rotation drive.

6. The fully automatic cable tie installation head module according to claim 5, characterized in that, The arc-shaped groove front guide profile of the upper guide claw (6) is concentric with the rotation fulcrum (701).

7. The fully automatic cable tie installation head module according to claim 1, characterized in that, A cutter cylinder (14) is fixed on the module base (3). The output end of the cutter cylinder (14) is connected to the cable tie cutter (11) in sequence through the cutter drive arm (12) and the cylinder connecting arm (13). The cutter cylinder (14) can drive the cable tie cutter (11) to move back and forth.

8. The fully automatic cable tie installation head module according to claim 1, characterized in that, The pull ratchet (15) is coaxially fixed on the ratchet drive shaft (16), and the ratchet drive shaft (16) is connected to the servo motor (21) fixed on the module base (3) through the pull ratchet drive belt (22) to achieve drive; the pull ratchet (15) is arranged with ratchet teeth with the same pitch as the unidirectional teeth on the cable tie (202) around its periphery, so as to tighten the cable tie (202) through meshing and drive it to move downward; an arc-shaped cable tie guide clamping member (17) is provided on the other side of the meshing point between the pull ratchet (15) and the cable tie (202); the surface of the cable tie guide clamping member (17) in contact with the cable tie (202) is smooth, and the other side is provided with a cable tie clamping spring (18); through the elastic force of the cable tie clamping spring (18), the cable tie guide clamping member (17) can tightly press the cable tie (202) and the pull ratchet (15) to the meshing state.

9. The fully automatic cable tie installation head module according to claim 1, characterized in that, A cable tie waste discharge channel (19) fixed on the module base (3) is provided below the cable tie ratchet (15). The cable tie waste discharge channel (19) is used to discharge and collect the cut cable tie tail waste (207). A waste discharge channel extension (20) is also provided at the end of the cable tie waste discharge channel (19).

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