Feeding, material separating and pushing mechanism of a cable tie tool and automatic cable tying method

Abstract

The present invention provides a feeding, dividing and pushing mechanism of a cable tie tool, comprising an intermittent indexing mechanism, a dividing mechanism, a pushing mechanism and a slider mechanism; sequentially: the intermittent indexing mechanism will convey one cable tie to the working position of the dividing mechanism each time, the dividing mechanism will separate the cable tie from the cable tie connecting plate of the one-piece cable tie, and the pushing mechanism will push the separated cable tie into the slider for positioning; the slider mechanism will slide the cable tie from the pre-positioning position to the bundling working position, and after the bundling is completed, the cable tie head will exit the slider, and the slider will retreat from the bundling working position to the pre-positioning position; the intermittent indexing mechanism, the dividing mechanism, the pushing mechanism and the slider mechanism are all driven by electric power, controlled by a controller to act sequentially according to time logic, and the intermittent indexing mechanism, the dividing mechanism and the pushing mechanism are driven by a motor and act in sequence. The present invention also provides an automatic cable tie method.

Description

Technical Field

[0001] The present invention relates to the technical field of bundling equipment, and particularly to a feeding, distributing and pushing mechanism for a cable tie tool and an automatic cable tying method. Background Art

[0002] The head of a common plastic cable tie is square. An existing feeding, distributing and pushing mechanism for a cable tie tool and an automatic cable tying method both use the square head of the cable tie for positioning to achieve automatic bundling operations. However, integrated fixed cable ties are widely used in automobiles, trains, motorcycles and some other transportation means. The integrated fixed cable tie is a combination of the functions of a common cable tie and additional head fixing features. The fixing features of the cable tie head are mainly used to buckle on the vehicle frame or the housing of household appliances. The common types of integrated fixed cable tie head features mainly include: the combination of a fir tree head and a butterfly shape, or the combination of a fir tree head and a wing shape, the combination of an arrow and a butterfly shape, or the combination of an arrow and a wing shape, a flat plate type with a locking hole, etc. Since the head shape of the integrated fixed cable tie is irregular and there are many shape types, most integrated fixed cable ties are neither suitable for feeding by a vibrating disk nor possible to be fed by a tube, resulting in difficulties in positioning and automatic feeding in automatic tools. Moreover, the design concepts and methods of various existing automatic cable tying machines and tools are not applicable to the automation of integrated fixed cable ties. According to a multinational company in the large automotive wiring harness industry, many well-known automotive manufacturing companies and multinational companies in the automotive wiring harness industry have been trying to independently develop or jointly develop with some well-known tool manufacturers a feeding, distributing and pushing mechanism for a cable tie tool and an automatic cable tying method suitable for integrated fixed cable ties in the past thirty years, but their efforts over the past thirty years have not been successful. Summary of the Invention

[0003] The objectives of the present invention include providing a feeding, distributing and pushing mechanism for a cable tie tool and an automatic cable tying method to solve the technical problems of high labor intensity and low efficiency in manual cable tying operations. In particular, the present invention provides a design scheme for a linkage mechanism that is fully electrically driven for feeding, distributing and pushing.

[0004] The present invention is mainly designed to solve the automatic bundling and positioning problems of integrated fixed cable ties or cable ties with labels having different head shapes. However, the present invention is also equally applicable to the automatic bundling operations of integrated common cable ties with regular head shapes. For the convenience of description in the following text, different types of cable ties are collectively referred to as cable ties or integrated cable ties.

[0005] The present invention provides a feeding, dividing and pushing mechanism of a cable tie tool, comprising an intermittent indexing mechanism, a dividing mechanism, a pushing mechanism and a slider mechanism; sequentially: the intermittent indexing mechanism conveys one cable tie to the working position of the dividing mechanism each time, the dividing mechanism separates the cable tie from the cable tie connecting plate of the one-piece cable tie, and the pushing mechanism pushes the separated cable tie into the slider for positioning; the slider mechanism slides the cable tie from a pre-positioning position to a bundling working position, and after bundling is completed, the cable tie head exits the slider, and the slider retreats from the bundling working position to the pre-positioning position; the intermittent indexing mechanism, the dividing mechanism, the pushing mechanism and the slider mechanism are all driven by electric power, controlled by a controller to act sequentially according to time logic, and the intermittent indexing mechanism, the dividing mechanism and the pushing mechanism are driven by a motor and act in sequence.

[0006] Further, the intermittent indexing mechanism comprises at least one wheel disc and one double-acting cam, and a plurality of pitch pins are evenly arranged along the axial or radial extension of the end surface of the wheel disc, and the plurality of pitch pins are made into one piece with the wheel disc or tightly mounted on the wheel disc; or a pitch roller is installed on each pitch pin in an empty sleeve; the wheel disc is also pivotally connected with a double-acting indexing cam in the axial or radial direction, and the groove of the indexing cam is in contact with the outer peripheral surface of the pitch roller or the pitch pin, so as to drive the wheel disc to perform intermittent indexing rotation;

[0007] Alternatively, the intermittent indexing mechanism comprises at least one wheel disc, a single-acting cam and a locking block elastically connected to the frame, the end surface of the wheel disc is evenly arranged with a plurality of pitch pins extending along its axial direction or radial direction, the plurality of pitch pins are made into one piece with the wheel disc or are tightly mounted on the wheel disc; or a pitch roller is installed in an empty sleeve on each pitch pin; further comprising a single-acting indexing cam or pawl pivotally connected to the frame and a locking block elastically connected to the frame, wherein the single-acting indexing cam or pawl is configured to move the pitch pin or pitch roller to rotate and feed, and the locking block always has a tendency to be stuck between two adjacent pitch pins to lock the wheel disc;

[0008] Alternatively, the intermittent indexing mechanism comprises at least one wheel disc, a ratchet and a locking block elastically connected to the frame, evenly distributed ratchets are arranged on the circumference of the wheel disc, the ratchet drives the wheel disc to rotate, and the locking block locks the wheel disc, thereby realizing the intermittent indexing movement of the wheel disc;

[0009] Alternatively, the intermittent indexing mechanism comprises at least one wheel disc and an incomplete gear with only one tooth on its periphery, and alternately evenly distributed incomplete internal tooth profiles and inner concave arcs are arranged on the inner circumference of the wheel disc, and the teeth of the incomplete gear are arranged to mesh with the incomplete internal tooth profile of the wheel disc to drive the wheel disc to rotate, and the outer convex arc of the incomplete gear cooperates with the inner concave arc of the wheel disc to lock the wheel disc, thereby realizing the intermittent indexing movement of the wheel disc;

[0010] Alternatively, the intermittent indexing mechanism comprises at least one wheel disc, an incomplete gear with only one tooth on its periphery, and a locking block elastically connected to the frame, an incomplete internal tooth profile evenly distributed alternately is arranged on the inner circumference of the wheel disc, the teeth of the incomplete gear mesh with the incomplete internal tooth profile of the wheel disc to drive the wheel disc to rotate, and a locking block elastically connected to the frame is arranged to lock the wheel disc, thereby realizing the intermittent indexing movement of the wheel disc;

[0011] Alternatively, the intermittent indexing mechanism includes at least one wheel and a groove wheel mechanism, wherein the wheel is provided with radial grooves and concave arcs that are alternately and evenly distributed, and a driving plate is provided on the circumferential outer side of the wheel, and a detent pin and a convex arc are installed on the driving plate, and the detent pin on the driving plate engages with the groove of the wheel to drive the wheel to rotate, and the convex arc on the driving plate cooperates with the concave arc of the wheel to lock the wheel, thereby realizing the intermittent indexing movement of the wheel.

[0012] Furthermore, the wheel is a hollow ring configured to rotate and feed the cable tie; the wheel is supported by a plurality of centering wheels or bearings and can rotate around the axis of the wheel, and the centering wheels or bearings are mounted on a frame or a housing.

[0013] The wheel performing intermittent indexing motion can convey one of the cable ties to a position in each bundling cycle where the symmetric center plane of the cable ties is coplanar with the center plane of the feeding, dividing and pushing mechanism of the cable tying tool and the automatic cable tying method.

[0014] Furthermore, radial positioning posts are evenly distributed on the circumference of the wheel disc, positioning holes are provided on the tie plate of the tie, and the positioning posts of the wheel disc cooperate with the positioning holes of the tie;

[0015] Alternatively, radial positioning holes are evenly arranged on the circumferential surface of the wheel disc, and positioning posts are arranged on the tie plate of the one-piece tie, and the positioning posts cooperate with the positioning holes.

[0016] Furthermore, the outer circumferential surface of the wheel disc is provided with contoured pits matching the shape of the head of the cable tie, and the number of the contoured pits is multiple, and the contoured pits are evenly distributed on the outer circumference of the wheel disc at a fixed pitch.

[0017] The slider mechanism includes a slider and a guide rail. The slider mechanism is arranged on the inner side of the circumference of the wheel disc. The slider cooperates with the guide rail and slides along the length direction of the guide rail. In addition to sliding along the length direction of the guide rail, the other five spatial degrees of freedom of the slider are constrained by the guide rail.

[0018] Furthermore, the slider and the guide rail are both located inside the circumference of the wheel disc.

[0019] Furthermore, the sliding block is provided with a guide groove in the vertical direction for installing a dividing knife.

[0020] Furthermore, it also includes a motor, a reduction gearbox, a swing arm, a connecting rod, and a pin shaft. The motor drives the swing arm through the reduction gearbox, the swing arm drives the connecting rod through the pin shaft, and the connecting rod drives the slider to slide on the guide rail.

[0021] The pushing mechanism includes: a pushing rod and a cam driving the pushing rod to move, the active end of the pushing rod is installed on the circumferential outer side of the wheel disc, the pushing rod pushes the cable tie separated from the cable tie connecting plate by the dividing knife to the slider for pre-positioning, and the slider drives the cable tie to slide from the pre-positioning position to the bundling working position.

[0022] The dividing mechanism also includes a dividing knife configured to separate each cable tie in the one-piece cable tie from the cable tie connecting plate in the one-piece cable tie. The dividing mechanism includes: a dividing knife and a cam that drives the dividing knife to move. The dividing knife is installed on the slider.

[0023] Furthermore, the dividing knife is installed on the sliding block, and a cam and connecting rod mechanism driven by a motor is configured to drive the dividing knife to move up and down on the sliding block.

[0024] Furthermore, the slider and / or the dividing knife are provided with convex ribs configured to clamp the head of the cable tie;

[0025] Alternatively, the slider is provided with a contoured recess matching the shape of the head of the cable tie, configured to clamp the head of the cable tie.

[0026] In addition to the above-mentioned intermittent indexing mechanism, material dividing mechanism, material pushing mechanism, and slider mechanism, the automatic cable tie tool also includes a guide claw mechanism, a tensioning wheel mechanism and a cutting knife. The controller controls the intermittent indexing mechanism, material dividing mechanism, material pushing mechanism, and slider mechanism, and the tightening and cutting actions are performed in sequence according to time logic to complete a bundling cycle.

[0027] The automatic cable tie method provided by the present invention comprises the following steps:

[0028] S1: placing the cable tie on the intermittent indexing mechanism, the intermittent indexing mechanism is activated, and the cable tie is conveyed to a position where the symmetrical center plane of the cable tie is coplanar with the center plane of a feeding, dividing and pushing mechanism of a cable tie tool and an automatic cable tie method;

[0029] S2: The dividing knife moves to separate the cable tie moved into place in step S1 from the cable tie connecting plate of the one-piece cable tie;

[0030] S3: The push rod moves to push the cable tie separated from the cable tie connecting plate in step S2 onto the slider for pre-positioning;

[0031] S4: The slider moves, driving the cable tie to slide from the pre-positioned position in step S3 to the bundling working position. During the sliding process of the slider, the cable tie body is curled in the guide grooves in the first guide claw and the second guide claw, and the first guide claw is rotated to pass the tail of the cable tie through the hole in the head of the cable tie;

[0032] S5: The tensioning wheel rotates to tighten the cable tie, and the cutting knife cuts off the tightened cable tie;

[0033] S6: The cable tie head exits the slider, and the slider moves back from the bundling working position to the pre-positioning position along the guide rail.

[0034] The beneficial effects of the present invention are:

[0035] The present invention provides a material feeding, dividing and pushing mechanism of a cable tie tool and an automatic cable tie method, which realize automatic bundling and improve the disadvantages of manual bundling work, such as high labor intensity and low bundling efficiency.

[0036] The present invention provides a material feeding, dividing and pushing mechanism of a cable tie tool and an automatic cable tie method, which solves the problem of automatic bundling operation of various one-piece fixed cable ties with irregular head shapes;

[0037] The feeding, dividing and pushing mechanism of the cable tie tool and the automatic cable tie method provided by the present invention are also applicable to the automatic bundling operation of common nylon cable ties with regular head shapes of one-piece types, and have a high degree of universality, which brings great convenience to the bundling operation.

[0038] The present invention particularly provides a fully electric material feeding, dividing and pushing mechanism of a cable tie tool, which highlights electric drive and is convenient for bundling wire harnesses at high altitudes, outdoors, inside airplanes, and other working occasions with safety requirements or limited space. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 An axonometric diagram of a material feeding, dividing and pushing mechanism of a cable tie tool provided in an embodiment of the present invention;

[0040] Figure 2 This is an axonometric view of a cable tie tool embodiment of the present invention, with the housing removed;

[0041] Figure 3 A top view of the present invention;

[0042] Figure 4 is the main view, and Figure 3 The corresponding AA section view shows that the wheel has just completed the indexing action and the dividing knife cam is about to act on the dividing knife top rod connecting rod;

[0043] Figure 5 The A-A cross-sectional view corresponding to Figure 3 wherein the material separating knife cam acts on the material separating knife ejector rod link, the material separating knife ejector rod pushes the material separating knife upward, and the material separating knife separates the cable tie from the cable tie connecting plate;

[0044] Figure 6 The A-A cross-sectional view corresponding to Figure 3 wherein the pusher rod cam is about to act on the pusher rod link, the pusher rod pushes the cable tie and the material separating knife downward, and the cable tie is positioned within the slider;

[0045] Figure 7 The right view corresponding to Figure 4 and Figure 5 and Figure 6 ;

[0046] Figure 8 The axonometric view of the guide rail, slider and material separating knife assembly provided by the embodiment of the present invention, with some ribs on the slider and the material separating knife made into one body, and the material separating knife can slide up and down within the guide rail in the direction of the arrow in the figure;

[0047] Figure 9 The rear view with Figure 4 as the reference, with the disc removed, mainly showing the linkage mechanism of the indexing cam, material separating knife and pusher rod, and the slider is in the pre-positioning position of the cable tie;

[0048] Figure 10 The rear view with Figure 4 as the reference, with the disc removed, mainly showing the linkage mechanism of the indexing cam, material separating knife and pusher rod, and the slider together with the cable tie is sent to the bundling working position;

[0049] Figure 11 The axonometric view of the application of the embodiment of the present invention in the automatic cable tie tool;

[0050] Figure 12 The front view of the application of the embodiment of the present invention in the automatic cable tie tool;

[0051] Figure 13 The top view of the application of the automatic cable tie tool corresponding to Figure 12 ;

[0052] Figure 14 The T-T cross-sectional view corresponding to Figure 13 wherein the pusher rod retracts to the upper end and the cable tie is positioned within the slider;

[0053] Figure 15 The T-T cross-sectional view corresponding to Figure 13 wherein the second guiding claw closes and the slider together with the cable tie is sent to the bundling working position;

[0054] Figure 16For Figure 13 In the corresponding TT cross-sectional view, the first guide claw swings inward to insert the tail of the cable tie into the hole of the head of the cable tie;

[0055] Figure 17 For Figure 13 In the corresponding TT cross-sectional view, the tension wheel tightens the cable tie under the drive of the motor, the cutting knife cuts the cable tie under the drive of the motor, and the second guide claw opens to allow the cable tie head to exit the slider;

[0056] Figure 18 for Figure 7 An alternative to the intermittent indexing mechanism shown, where the cam turns the pitch roller to drive the wheel disc, and the locking block locks the wheel disc;

[0057] Figure 19 for Figure 7 An alternative to the intermittent indexing mechanism shown is that the wheel disc is driven by the meshing of the incomplete gear with the inner tooth profile of the wheel disc, and the outer convex arc of the incomplete gear cooperates with the inner concave arc of the wheel disc to lock the wheel disc;

[0058] Figure 20 It is an axonometric drawing of one-piece fixed cable ties with irregular head shapes such as airplane head, mushroom head, fir tree head, cable ties with labels, and ordinary cable ties with regular head shapes.

[0059] The AA section and the TT section in the figure are the symmetrical center planes of the automatic cable tie tool, which are also the center planes of the feeding, dividing and pushing mechanisms of the cable tie tool, and are also the symmetrical center planes of the cable tie that has entered the pre-positioning.

[0060] Reference numerals: 000, controller; 001, wire; 1, slider; 104, rib; 100, motor; 11, trigger; 110, reduction gearbox; 111, swing arm; 112, pin shaft; 113, connecting rod; 114, pin shaft; 117, trigger return spring; 118, trigger central shaft; 119, return spring; 2, guide rail; 20, cable tie; 201, cable tie head; 202, cable tie connecting plate; 203, positioning hole; 3, first guiding claw; 31, first guiding claw central shaft; 30, dividing knife; 302, dividing knife ejector rod; 304, pin shaft; 305, dividing knife ejector rod connecting rod; 307, cam roller; 308, dividing knife cam; 309, dividing knife ejector rod return spring; 31, first guiding claw rotating shaft; 4, second guiding claw; 41, second guiding claw central shaft; 5, frame; 6, tensioning wheel; 600, motor; 610, reduction gearbox; 620, periodic control gear; 621, sensing part; 622, sensor; 630, tensioning gear; 7, cutting knife; 8, intermittent indexing mechanism; 800, motor; 801, wheel disc; 802, positioning post; 803, pitch roller; 804, indexing cam; 805, cam shaft; 806, centering wheel; 807, profiling pit; 808, pitch pin; 809, locking block; 810, incomplete gear; 811, gear; 812, gear shaft; 813, gearbox; 820, gear; 814, pin shaft; 815, spring; 9, pushing rod; 901, pushing cylinder; 902, pushing cylinder bracket; 903, pin shaft; 904, pushing rod connecting rod; 905, connecting rod central shaft; 906, cam roller; 907, cam shaft; 908, pushing rod cam; 909, pushing rod return spring; 10, housing; 12, waste box; 121, waste box door panel; 122, door panel rotating shaft. Detailed implementation manners

[0061] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation manners:

[0062] Please refer to Figure 1 and Figure 2 In this embodiment, Figure 2 is an axonometric view of the present invention applied to an automatic cable tie tool, with the housing removed, as shown in Figure 2 As shown, the motor 800 is output to the gear shaft 812 through the gear 820 and then through the gearbox 813. Figure 1 is an axonometric view of the present invention, with the motor 800, the gear 820 and the gearbox 813 omitted, as shown in Figure 1As shown, the wheel disc 801, the push rod 9, and the dividing knife 30 are a linkage mechanism driven by a motor 800, the gear shaft 812 is the output shaft of the gear box 813, the gear shaft 812 transmits power to the double-acting indexing cam 804 and the camshaft 907 through the gear 820, the dividing knife cam 308 and the push rod cam 908 are coaxially connected to the camshaft 907, the dividing knife top rod connecting rod 305 and the push rod connecting rod 904 can rotate around the axis of the connecting rod center axis 905; the double-acting cam The axis of the wheel 804 and the wheel disc 801 are arranged vertically in space but do not intersect. The wheel disc 801 rotates one pitch for each rotation of the double-acting cam 804, and the rotation of the double-acting cam 804 causes the wheel disc 801 to perform intermittent indexing motion; the push rod 9 is installed on the frame 5 or on the housing 10 of the automatic cable tie tool through a sliding guide rail; in this embodiment, the intermittent indexing mechanism 8 mainly includes the wheel disc 801 and the intermittent indexing mechanism (the indexing mechanism in this embodiment is the indexing cam 804); the dividing mechanism mainly includes the dividing knife cam 308 and the dividing knife 30; the pushing mechanism mainly includes the pushing rod cam 908 and the pushing rod 9.

[0063] Please continue to refer to Figure 1 and Figure 2 The intermittent indexing mechanism at least includes a wheel 801 that performs intermittent indexing motion, and the wheel 801 is a hollow ring configured to rotate and feed the cable tie; the wheel 801 is composed of a plurality of centering wheels 806 ( Figure 1 The centering wheel 806 or the bearing is mounted on the frame or the housing;

[0064] For further information, please refer to Figure 1 and Figure 2 ,and Figure 11 , radial positioning posts 802 are evenly distributed on the circumference of the wheel 801, and positioning holes 203 are provided on the tie plate 202 of the tie, and the positioning posts 802 of the wheel 801 cooperate with the positioning holes 203 of the tie plate 202;

[0065] Alternatively, radial positioning holes are evenly arranged on the circumferential surface of the wheel disc 801, and positioning posts are arranged on the tie plate 202 of the one-piece tie, and the positioning posts cooperate with the positioning holes;

[0066] For further information, please refer to Figure 1 and Figure 2 The outer circumferential surface of the wheel disc 801 is provided with contoured pits 807 matching the head shape of the cable tie, and the number of the contoured pits 807 is multiple, and each of the contoured pits 807 is evenly distributed on the outer circumference of the wheel disc 801 at a fixed pitch.

[0067] For further information, please refer toFigure 1 and Figure 2 On the end face of the roulette wheel 801, a plurality of pitch pins 808 extend along its axial direction. The plurality of pitch pins 808 are evenly distributed on the end face of the roulette wheel 801. The plurality of pitch pins 808 are integrally formed with the roulette wheel 801 or tightly fitted and installed on the roulette wheel 801. In order to reduce friction, pitch rollers 803 are loosely sleeved on each pitch pin 808. A double-acting indexing cam 804 is also pivotally connected to the end face of the roulette wheel 801. The pitch rollers 803 or pitch pins 808 are installed in the slots of the double-acting cam 804. The outer peripheral surfaces of the pitch rollers 803 or pitch pins 808 are in contact with both side surfaces of the slots of the double-acting cam 804. Both side surfaces of the slots of the double-acting cam 804 have the function of driving or locking the roulette wheel 801, and drive the roulette wheel 801 to perform intermittent indexing rotation.

[0068] Please continue to refer to Figures 3 - 7 , in this embodiment, Figure 3 is a top view of the present invention, Figures 4 - 6 showing the indexing action of the roulette wheel 801, the action of the separating knife 30 moving upward to separate the cable ties, and the action process of the pushing rod 9 pressing down the cable ties 20 and the separating knife 30 in sequence according to the time logic;

[0069] Figure 4 In, the double-acting cam 804 has just completed the indexing action of the roulette wheel 801. At this time, the gear 820 drives the continuous rotation of the double-acting cam 804 while the roulette wheel 801 is locked and immobile by the double-acting cam 804; and the camshaft 907 drives the rising edge of the separating knife cam 308 to act on the cam roller 307 under the drive of the gear 820, so that the separating knife push rod link 305 rotates clockwise around the link center shaft 905. The separating knife push rod link 305 drives the separating knife push rod 302 to move upward through the pin shaft 304. The separating knife push rod 302 drives the separating knife 30 to slide upward in the slider 1 to separate the cable tie 20 from the cable tie connecting plate 202;

[0070] Figure 5 In, the separating knife 30 has cut and separated the cable tie 20 from the cable tie connecting plate 202. At this time, the gear 820 drives the continuous rotation of the double-acting cam 804 while the roulette wheel 801 is locked and immobile by the double-acting cam 804; the camshaft 907 drives the rising edge of the pushing rod cam 908 to act on the cam roller 906 under the drive of the gear 820, so that the pushing rod link 904 rotates counterclockwise around the link center shaft 905. The pushing rod link 904 drives the pushing rod 9 to move downward through the pin shaft 903. The pushing rod 9 presses the cut cable tie 20 onto the horizontal bottom plate of the L-shaped separating knife 30. At this time, the falling edge of the separating knife cam 308 contacts the cam roller 307, and the separating knife push rod return spring 309 pulls the separating knife push rod 302 downward to reset;

[0071] Figure 6 Among them, the pusher rod 9 pushes the cut cable tie 20 and the material dividing knife 30 downward together to be positioned inside the slider 1. At this time, the gear 820 drives the continuous rotation of the double-acting cam 804 while the disc 801 is locked and immobile by the double-acting cam 804. Driven by the gear 820, the camshaft 907 drives the descending edge of the pusher rod cam 908 to contact the cam roller 906, and the pusher rod return spring 909 pulls the pusher rod 9 upward to reset.

[0072] It should be noted that in this embodiment, since both the material dividing knife cam 308 and the pusher rod cam 908 are single-acting cams, it is necessary to set the material dividing knife ejector rod return spring 309 and the pusher rod return spring 909 to pull the material dividing knife ejector rod 302 and the pusher rod 9 back to their original positions respectively.

[0073] Please continue to refer to Figure 8 、 Figure 9 、 Figure 10 In this embodiment, Figure 8 is an isometric view showing the assembly relationship of the slider 1, the guide rail 2, the material dividing knife 30, the cable tie 20, and the swing arm 111, pin shaft 112, connecting rod 113, and pin shaft 114 that drive the slider 1; Figure 9 and Figure 10 is a rear view with Figure 4 as the reference; Figure 8 Among them, the slider mechanism mainly includes: the slider 1 and the guide rail 2, and also includes: the motor 100, the reduction gearbox 110, the swing arm 111, the pin shaft 112, the connecting rod 113, and the pin shaft 114. The slider 1 and the guide rail 2 are in a rectangular groove fit. In addition to being able to slide along the length direction of the guide rail 2, the other five spatial degrees of freedom of the slider 1 are constrained by the guide rail 2. The motor 100 drives the swing arm 111, the pin shaft 112, the connecting rod 113, and the pin shaft 114 through the reduction gearbox 110 to drive the slider 1 to slide on the guide rail 2. The slider 1 is also provided with a rectangular guide groove in the vertical direction. The material dividing knife 30 is L-shaped, and the vertical section of the material dividing knife 30 is in fit with the rectangular guide groove of the slider 1 in the vertical direction. The material dividing knife 30 can slide together with the slider 1 and can also slide up and down along the rectangular guide groove of the slider 1 in the vertical direction. Figure 9 The position shown is the pre-positioning position of the slider 1 for the cable tie. After the material dividing knife ejector rod 302 and the pusher rod 9 are reset, the motor 100 drives the swing arm 111 to rotate counterclockwise as shown in the figure. The swing arm 111 drives the connecting rod 113 through the pin shaft 112, and the connecting rod 113 drives the slider 1 together with the cable tie 20 to slide from the pre-positioning position along the guide rail 2 to the bundling working position; Figure 10The position shown is that the slider 1 is in the cable tie bundling working position. After the bundling is completed, the cable tie head 201 withdraws from the slider 1, and the motor 100 drives the swing arm 111 to rotate clockwise as shown in the figure. The swing arm 111 drives the connecting rod 113 through the pin 112, and the connecting rod 113 drives the slider 1 from the bundling working position along the guide rail 2 to the pre-positioning position through the pin 114; the push rod 9 is installed on the frame 5 or a feeding, dividing and pushing mechanism of a cable tie tool and a housing 10 of an automatic cable tie method through a sliding guide rail; or the dividing knife 30 is installed on the pushing rod 9 and moves up and down with the pushing rod 9; the dividing knife 30 is installed on the slider 1, and the dividing knife 30 slides up and down on the slider 1, and the dividing knife 30 moves with the slider 1, and the dividing knife 30 and the slider 1 are provided with convex ribs 104 for clamping the cable tie head 201,

[0074] Please continue to refer to Figure 8 , the dividing knife is set to L shape ( Figure 8 In the figure, the two leads are respectively in the vertical part and the horizontal section of the L-shape), of the four convex ribs 104, two convex ribs 104 are formed integrally with the slider 1; and the other two convex ribs 104 are formed on the horizontal section of the L-shaped dividing knife 30;

[0075] Alternatively, the four ribs 104 are integrally formed with the dividing knife 30 and can be pressed together with the dividing knife 30. Figure 8 Slide up and down in slider 1 in the direction indicated by the arrow;

[0076] Alternatively, the four ribs 104 are integrally formed with the slider 1;

[0077] In addition, in this embodiment, the above-mentioned structure of providing convex ribs on the slider 1 and / or the dividing knife 30 to position the head of the cable tie 20 can be adopted, but it is not limited to this, and other configurations can also be adopted, such as: providing a contoured pit matching the shape of the head of the cable tie 20 on the slider 1 or the dividing knife 30. Therefore, as long as this structure is used, the positioning of the head of the cable tie 20 can be achieved.

[0078] Please continue to refer to Figure 11 , Figure 12 and Figure 13 In this embodiment, Figure 11 It is an axonometric view of the automatic cable tie tool loading integrated fixed cable tie. Figure 12 This is the main view of the automatic cable tie tool. Figure 13 is with Figure 12 The corresponding main view.

[0079] Please continue to refer to Figures 14 to 17 In this embodiment, Figures 14 to 17 For the AA section view, Figure 14As shown, the second guide claw 4 is in an open state, and the cable tie 20 is positioned in the slider 1 and is in a pre-positioned position; Figure 15 As shown, when the trigger 11 is pulled, the second guide claw 4 rotates around the second guide claw center pin 41 and closes with the first guide claw 3, and the motor 100 drives the swing arm 111 to press Figure 14 As shown in the figure, the swing arm 111 drives the connecting rod 113 through the pin 112, and the connecting rod 113 drives the slider 1 through the pin 114 to drive the cable tie 20 to slide from the right end of the guide rail 2 to the left end, that is, from the pre-positioning position to the bundling working position. During the sliding process of the slider 1, the cable tie 20 is curled in the guide grooves in the first guide claw 3 and the second guide claw 4; Figure 16 As shown, the first guide claw 3 rotates around the first guide claw central axis 31 under the drive of the motor 600 to pass the tail of the cable tie 20 through the hole of the cable tie head 201, the tensioning wheel 6 rotates under the drive of the motor 600 to tighten the cable tie 20, and the cutting knife 7 cuts the tightened cable tie 20 under the drive of the motor 600, and the bundling is completed; Figure 17 As shown, after the bundling is completed, the second guide claw 4 opens, and after the head of the cable tie 20 exits from the slider 1, the motor 100 drives the swing arm 111 to press Figure 17 As shown, the swing arm 111 rotates clockwise, and the connecting rod 113 drives the connecting rod 113 through the pin 112. The connecting rod 113 drives the slider 1 to return to the pre-positioned position of the cable tie through the pin 114, so as to prepare for the next bundling cycle.

[0080] To summarize the above process, a strapping cycle that follows a logical time sequence includes:

[0081] S1. The cable tie is placed on the intermittent wheel 801, and the intermittent indexing movement of the wheel 801 sends the conjoined cable tie 20 to the top of the dividing knife;

[0082] S2. The dividing knife 30 moves upward to separate the cable tie 20 from the cable tie connecting plate 202;

[0083] S3. The push rod 9 pushes the separated cable tie 20 downward into the slider 1 for positioning;

[0084] S4. The slider moves, driving the cable tie to slide from the pre-positioned position in step S3 to the bundling working position. During the sliding process of the slider, the cable tie is curled in the guide grooves of the first guide claw 3 and the second guide claw 4, and the first guide claw 3 is rotated to pass the tail of the cable tie through the hole of the head of the cable tie;

[0085] S5: The tensioning wheel 6 rotates to tighten the cable tie, and the cutting knife cuts the tightened cable tie;

[0086] S6: The cable tie head exits the slider, and the slider moves back from the bundling working position to the pre-positioning position along the guide rail.

[0087] Please continue to refer to Figure 18 , this embodiment is Figure 1 Alternative designs of the structures shown, such as Figure 18 As shown, the wheel disc 801 is mounted on the bracket 5 by a plurality of centering wheels 806 or a plurality of bearings. The end face of the wheel disc 801 is provided with a plurality of pitch pins 808 extending along its axial direction. The plurality of pitch pins 808 are evenly distributed on the end face of the wheel disc 801. The plurality of pitch pins 808 are made into one piece with the wheel disc or are tightly mounted on the wheel disc 801. In order to reduce friction, a pitch roller 803 is installed on each pitch pin 808 in an empty sleeve, and a single-acting cam 804 is arranged on the inner side of the wheel disc 801. , the dividing knife cam 308 and the push rod cam 908, the single-acting cam 804 is driven by the gear 820, and the gear 820 also drives the other two gears 820, the dividing knife cam 308 and the push rod cam 908 are respectively coaxially connected with the gear 820, and the power is transmitted to the single-acting indexing cam 804, the dividing knife cam 308 and the push rod cam 908 through the gear 820, and the single-acting cam 804 acts on the pitch roller 803, and the single-acting cam 804 toggles the wheel 803 every time it rotates one circle When the wheel disc 801 rotates for one indexing pitch, the locking block 809 is wedge-shaped and is also arranged on the inner side of the circumference of the wheel disc 801. The locking block 809 is loosely sleeved on the pin shaft 814 and can rotate around the pin shaft 814. The spring 815 always pushes the locking block 809 to the outer side of the circumference of the wheel disc 801. Under the action of the spring force, the locking block 809 always has a tendency to be stuck between two adjacent pitch pins to lock the wheel disc 801 after indexing. When the wheel disc 801 is locked, the cam 804 continues to rotate. Sequentially, the rising edge of the dividing knife cam 308 causes the dividing knife top rod 302 to rise. When the dividing knife 30 reaches the highest point and has separated the cable tie 20 from the cable tie connecting plate 202, the rising edge of the push rod cam 908 begins to act to cause the push rod 9 to move downward, pushing the cable tie head 201 into the slider 1 for positioning. In this embodiment, the intermittent indexing mechanism 8 includes: at least one wheel disc 801, a single-acting cam 804 and a locking block 809 elastically pivoted to the frame.

[0088] It should be noted that Figure 18 In the illustrated embodiment, because the dividing knife cam 308 and the push rod cam 908 are both single-acting cams, it is necessary to provide a dividing knife top rod return spring 309 and a push rod return spring 909 to pull the dividing knife top rod 302 and the push rod 9 back to their original positions respectively.

[0089] It should also be noted that: Figure 18 The structure shown is similar to the working principle of the ratchet and pawl, that is, the intermittent indexing mechanism 8 may include: at least one wheel 801 and a ratchet and pawl mechanism.

[0090] Please continue to refer toFigure 19 , this embodiment is also Figure 1 another alternative design of the structure shown. It uses an incomplete gear meshing to replace the cam-driven wheel disc 801 for intermittent indexing motion. The incomplete gear 810 is arranged inside the circumference of the wheel disc 801. The circumference of the incomplete gear 810 has only one tooth and an outward convex arc section. A plurality of evenly distributed internal tooth profiles that can mesh with the tooth of the incomplete gear 810 are arranged on the inner circumference of the wheel disc 801. A plurality of evenly distributed internal concave arc surfaces that can cooperate with the arc section of the incomplete gear 810 are also arranged on the wheel disc 801. The incomplete gear 810 is driven by the gear 820, and the gear 820 also drives two other gears 820. The material separating knife cam 308 and the pushing rod cam 908 are respectively coaxially fixed to the gear 820. The power is transmitted to the single incomplete gear 810, the material separating knife cam 308, and the pushing rod cam 908 through the gear 820. When the tooth of the incomplete gear 810 meshes with the internal tooth profile on the wheel disc 801, the outward convex arc section of the incomplete gear 810 is separated from the internal concave arc surface of the wheel disc 801, and the wheel disc 801 is in the indexing motion state. When the tooth of the incomplete gear 810 just disengages from the (incomplete) internal tooth profile on the wheel disc 801, the outward convex arc section of the incomplete gear 810 remains in contact with the internal concave arc surface of the wheel disc 801, and the wheel disc 801 is in the locked state. The incomplete gear 810 continues to rotate. Sequentially, the rising edge of the material separating knife cam 308 acts to raise the material separating knife ejector rod 302. When the material separating knife 30 reaches the highest point position and has separated the cable tie 20 from the cable tie connecting plate 202, the rising edge of the pushing rod cam 908 starts to act on the cam roller 906 to move the pushing rod 9 downward, and push the head 201 of the cable tie into the slider 1 for positioning. This embodiment proves that the intermittent indexing mechanism at least includes a wheel disc 801 and an incomplete gear 810 with only one tooth on its periphery.

[0091] It should be noted that Figure 19 in the embodiment shown, because the material separating knife cam 308 and the pushing rod cam 908 are both single-acting cams, it is necessary to set a material separating knife ejector rod return spring 309 and a pushing rod return spring 909 to pull the material separating knife ejector rod 302 and the pushing rod 9 back to their original positions respectively.

[0092] Furthermore, or Figure 19 in the embodiment shown, cancel the internal concave arc on the wheel disc 801 and cancel the outward convex arc on the incomplete gear 810, and add Figure 18 the locking block 809 shown in the embodiment shown, that is: the intermittent indexing mechanism is composed of the combination of the wheel disc 801, the incomplete gear mechanism and the locking block 809. This embodiment shows that the intermittent indexing mechanism at least includes a wheel disc 801, an incomplete gear 810 with only one tooth on its periphery, and a locking block 809 elastically pivoted to the frame.

[0093] It should also be noted that: Figure 19 The working principle of the shown incomplete gear indexing mechanism is similar to that of the Geneva mechanism, that is: a driving disk is arranged outside the circumference of the disk 801, a dial pin and an outward convex arc are installed on the driving disk, radially distributed grooves and inward concave arcs are alternately and evenly arranged on the disk 801, the dial pin on the driving disk meshes with the grooves of the disk 801 to drive the disk 801 to rotate, and the outward convex arc on the driving disk cooperates with the inward concave arc of the disk 801 to lock the disk 801, realizing the intermittent indexing movement of the disk 801; it should be noted that: Figure 19 The shown incomplete gear mechanism requires less space and has a compact structure compared with the Geneva mechanism; this embodiment shows that: the intermittent indexing mechanism includes at least one disk 801 and a Geneva mechanism.

[0094] Please continue to refer to Figure 2 , in this embodiment, the first guiding claw 3, the tensioning wheel 6, and the cutting knife 7 are all driven by the motor 600 through the reduction gearbox 610. The reduction gearbox 610 drives the periodic control gear 620. The periodic control gear 620 drives the tensioning gear 630. One of the wheels of the tensioning gear 630 is coaxially fixed with the tensioning wheel 6. There is an induction part 621 on the periodic control gear 620, and a sensor 622 is arranged adjacent to the end face of the periodic control gear 620. When the sensor 622 detects the induction part 621, it sends out a signal to stop the motor 600. In each bundling and tensioning cycle, the periodic control gear 620 rotates one week, and the first guiding claw 3 and the cutting knife 7 act at least once; the slider 1 is driven by the motor 100 through the reduction gearbox 110 to drive the swing arm 111 to swing. The swing arm 111 drives the connecting rod 113 through the pin shaft 112, and the connecting rod 113 drives the slider 1 to slide reciprocally along the guide rail 2 at the pre-positioning position ( Figure 2 the right end in Figure 2 and the bundling working position ( Figure 2 the left end in

[0095] Please continue to refer to Figure 20, in this embodiment, an integrated fixing tie strap with an irregular head shape such as an aircraft head, a mushroom head, a tree head, a tie strap with a label, and a common tie strap with a regular head shape are shown. As long as the ribs 104 or profiling pits are reasonably arranged on the slider 1 or / and the dividing knife 30 according to the specific head shape of the tie strap, the present invention can achieve automatic bundling of various integrated fixing tie straps with irregular head shapes, or tie straps with labels, or common tie straps with regular head shapes.

[0096] According to the disclosure and teaching of the above specification, those skilled in the art to which the present invention pertains can also make appropriate changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present invention.

[0097] Industrial applicability

[0098] The feeding, dividing, and pushing mechanism of a tie strap tool and the automatic tie strap method provided by the present invention achieve automatic bundling of tie straps, improve the disadvantages of large labor intensity and low bundling efficiency in manual bundling operations. Moreover, the present invention provides a fully electric design scheme, which is convenient for the automatic tie strap tool to operate at high altitudes or in the wild. The present invention is especially designed for the automatic bundling of bulk or integrated fixing tie straps or tie straps with labels having different head shapes, but the present invention is also equally applicable to the automatic bundling operations of bulk or integrated common tie straps with regular head shapes, with a high degree of generalization, bringing great convenience to the bundling operation.

Claims

1. A feeding, material separating and pushing mechanism of a cable tie tool, characterized in that: It includes an intermittent indexing mechanism, a material dividing mechanism, a material pushing mechanism and a slider mechanism; sequentially: the intermittent indexing mechanism conveys one cable tie to the working position of the material dividing mechanism each time, the material dividing mechanism separates the cable tie from the cable tie connecting plate of the one-piece cable tie, and the material pushing mechanism pushes the separated cable tie into the slider for positioning; the slider mechanism slides the cable tie from the pre-positioning position to the bundling working position; the intermittent indexing mechanism includes at least one wheel disc, which is a hollow ring and is configured to rotate and feed the cable tie; the wheel disc is supported by a plurality of centering wheels or bearings and can rotate around the axis of the wheel disc, The centering wheel or the bearing is installed on the frame or the housing, the dividing mechanism is provided with a dividing knife, the pushing mechanism is provided with a pushing rod, and the slider mechanism mainly includes a slider and a guide rail; the intermittent indexing mechanism, the dividing mechanism, the pushing mechanism and the slider mechanism are all driven by electric power, and the intermittent indexing mechanism, the dividing mechanism and the pushing mechanism are driven by a motor; the wheel, the pushing rod and the dividing knife are a linkage mechanism driven by a motor; the controller controls the intermittent indexing mechanism, the dividing mechanism, the pushing mechanism, the slider mechanism, and the tightening and cutting actions of the cable tie tool to be performed in a time logical sequence.

2. The feeding, material separating and pushing mechanism of a cable tie tool according to claim 1, characterized in that: The intermittent indexing mechanism comprises at least one wheel disc and a double-acting cam, and a plurality of pitch pins are evenly arranged along the axial or radial extension of the end surface of the wheel disc, and the plurality of pitch pins are made into one piece with the wheel disc or tightly mounted on the wheel disc; or a pitch roller is installed on each pitch pin in an empty sleeve; the wheel disc is also pivotally connected with a double-acting indexing cam in the axial or radial direction, and the groove of the indexing cam is in contact with the outer peripheral surface of the pitch roller or the pitch pin, so as to drive the wheel disc to perform intermittent indexing rotation; Alternatively, the intermittent indexing mechanism comprises at least one wheel disc, a single-acting cam and a locking block elastically pivoted to the frame, the end surface of the wheel disc is evenly arranged with a plurality of pitch pins extending along its axial direction or radial direction, the plurality of pitch pins are made into one piece with the wheel disc or are tightly mounted on the wheel disc; or a pitch roller is installed in an empty sleeve on each pitch pin; further comprising a single-acting indexing cam or pawl pivoted to the frame and a locking block elastically connected to the frame, wherein the single-acting indexing cam or pawl is configured to move the pitch pin or pitch roller to rotate and feed, and the locking block always has a tendency to be stuck between two adjacent pitch pins to lock the wheel disc; Alternatively, the intermittent indexing mechanism comprises at least one wheel disc, a ratchet and a locking block elastically connected to the frame, evenly distributed ratchets are arranged on the circumference of the wheel disc, the ratchet drives the wheel disc to rotate, and the locking block locks the wheel disc, thereby realizing the intermittent indexing movement of the wheel disc; Alternatively, the intermittent indexing mechanism comprises at least one wheel disc and an incomplete gear with only one tooth on its periphery, and alternately evenly distributed incomplete internal tooth profiles and inner concave arcs are arranged on the inner circumference of the wheel disc, and the teeth of the incomplete gear are arranged to mesh with the incomplete internal tooth profile of the wheel disc to drive the wheel disc to rotate, and the outer convex arc of the incomplete gear cooperates with the inner concave arc of the wheel disc to lock the wheel disc, thereby realizing the intermittent indexing movement of the wheel disc; Alternatively, the intermittent indexing mechanism comprises at least one wheel disc, an incomplete gear with only one tooth on its periphery, and a locking block elastically connected to the frame, incomplete internal tooth profiles are arranged alternately and evenly distributed on the inner circumference of the wheel disc, the teeth of the incomplete gear mesh with the incomplete internal tooth profile of the wheel disc to drive the wheel disc to rotate, and a locking block elastically connected to the frame is arranged to lock the wheel disc, thereby realizing the intermittent indexing movement of the wheel disc; Alternatively, the intermittent indexing mechanism includes at least one wheel and a groove wheel mechanism, wherein the wheel is provided with radial grooves and concave arcs that are alternately and evenly distributed, and a driving plate is provided on the circumferential outer side of the wheel, and a detent pin and a convex arc are installed on the driving plate, and the detent pin on the driving plate engages with the groove of the wheel to drive the wheel to rotate, and the convex arc on the driving plate cooperates with the concave arc of the wheel to lock the wheel, thereby realizing the intermittent indexing movement of the wheel.

3. The feeding, material separating and pushing mechanism of a cable tie tool according to claim 1, characterized in that: The circumferential surface of the wheel disc is evenly provided with radial positioning posts or evenly provided with radial positioning holes; Alternatively, positioning ribs or positioning grooves are provided on the circumference of the wheel disc.

4. The feeding, material separating and pushing mechanism of a cable tie tool according to claim 1, characterized in that: A plurality of contoured pits matching the shape of the head of the cable tie are evenly distributed on the outer circumference of the wheel disc.

5. The feeding, material separating and pushing mechanism of a cable tie tool according to claim 1, characterized in that: The slider mechanism includes a slider and a guide rail. The slider mechanism is arranged on the inner side of the circumference of the wheel disc. The slider cooperates with the guide rail and slides along the length direction of the guide rail. Except for sliding along the length direction of the guide rail, the other five spatial degrees of freedom of the slider are constrained by the guide rail. The length direction of the guide rail is arranged to be parallel to the axial direction of the wheel disc.

6. The feeding, material separating and pushing mechanism of a cable tie tool according to claim 1, characterized in that: The slide block is provided with a guide groove in the vertical direction.

7. The feeding, material separating and pushing mechanism of a cable tie tool according to claim 1, characterized in that: The slider is provided with a positioning rib to clamp the head of the cable tie; or the slider is provided with a recess that is shaped like the head of the cable tie to clamp the head of the cable tie.

8. The feeding, material separating and pushing mechanism of a cable tie tool according to claim 1, characterized in that: The material dividing mechanism comprises: a material dividing knife and a cam for driving the material dividing knife to move, the material dividing knife is mounted on the slider, the material dividing knife is arranged in an L shape, the vertical section of the material dividing knife cooperates with the guide groove of the slider in the vertical direction, the material dividing knife can slide with the slider, and can also slide up and down along the guide groove in the vertical direction of the slider; Alternatively, the dividing knife is mounted on the pushing rod.

9. The feeding, material separating and pushing mechanism of a cable tie tool according to claim 8, characterized in that: The L-shaped horizontal section of the dividing knife is provided with convex ribs or contoured recesses to clamp the head of the cable tie.

10. The feeding, material separating and pushing mechanism of a cable tie tool according to claim 1, characterized in that: The push mechanism comprises a push rod and a cam for driving the push rod to move, and the action end of the push rod is installed on the outer side of the circumference of the wheel disc.

11. An automatic cable tie method, characterized in that: Using the feeding, dividing and pushing mechanism of the cable tie tool according to any one of claims 1 to 10 to bundle the one-piece cable tie comprises the following steps: S1: Place the cable tie on the intermittent indexing mechanism. The intermittent indexing mechanism operates to convey the cable tie to a position where the symmetric center plane of the cable tie coincides with the center plane of the feeding, separating, and pushing mechanism of a cable tie tool. S2: The separating knife operates to separate the cable tie that has moved into place in step S1 from the cable tie connecting plate of the integral cable tie. S3: The pushing rod operates to push the cable tie separated from the cable tie connecting plate in step S2 onto the slider for pre-positioning. S4: The slider moves, driving the cable tie to slide from the pre-positioning position in step S3 to the bundling working position. During the sliding of the slider, the body of the cable tie curls in the guiding grooves within the first guiding claw and the second guiding claw. The first guiding claw swings and rotates to pass the tail of the cable tie through the hole in the head of the cable tie. S5: The tightening wheel rotates to tighten the cable tie, and the cutting knife cuts the tightened cable tie. S6: The head of the cable tie exits the slider, and the slider retracts from the bundling working position to the pre-positioning position along the guide rail.

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