Intermittent indexing mechanism of binding tool

Abstract

The invention provides an intermittent indexing mechanism of a ribbon tool. The intermittent indexing mechanism comprises a wheel disc, a single-action cam and a locking block elastically connected to a rack. Or the wheel disc, the pawl and the locking block are elastically connected to the rack; or a wheel disc and an incomplete gear with only one tooth on the periphery; the periphery of the incomplete gear is only provided with one tooth, and the locking block is elastically connected to the machine frame. The wheel disc is in a hollow ring shape and is configured to enable the binding belt to be fed in a rotating mode. The wheel disc is supported by a plurality of centering wheels or bearings and can rotate around the axis of the wheel disc, and the centering wheels or the bearings are installed on the machine frame or the shell. And the intermittent indexing mechanism, the material distributing mechanism, the material pushing mechanism and the sliding block mechanism are all driven by electric power.

Description

Technical Field

[0001] The invention relates to the technical field of strapping equipment, and in particular to an intermittent indexing mechanism of a strapping tool. Background Art

[0002] The head of an ordinary plastic cable tie is square. The existing feeding, dividing and pushing mechanism of a cable tie tool and the automatic cable tie method all use the square cable tie head for positioning to realize the automatic bundling operation. The integrated fixed cable tie is widely used in cars, trains, motorcycles and other means of transportation. The integrated fixed cable tie is a combination of an ordinary cable tie function and an additional head fixing feature. The fixing feature of the cable tie head is mainly used to buckle on the frame or the housing of a home appliance. Common integrated fixed cable tie head feature types mainly include: a combination of a fir tree head plus a butterfly shape, or a fir tree head plus a wing shape, an arrow plus a butterfly shape, or a combination of an arrow plus a wing shape, a flat plate with a locking hole, etc. Due to the irregular shape of the head of the integrated fixed cable tie and the variety of shapes, most of the integrated fixed cable ties are neither suitable for vibrating plate feeding nor pipe feeding, which makes it difficult to position and automatically feed in the automatic tool. The design concepts and methods of various automatic cable tie machines and tools that have been introduced are also not suitable for the automation of integrated fixed cable ties. According to large multinational companies in the automotive wiring harness industry, a number of well-known automobile manufacturers 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, dividing and pushing mechanism of a cable tie tool suitable for one-piece fixed cable ties and an automatic cable tie method over the past thirty years, but their efforts over the past thirty years have not been successful. Summary of the invention

[0003] The purpose of the present invention includes providing a feeding, dividing and pushing mechanism of a cable tie tool and an automatic cable tie method to solve the technical problems of high labor intensity and low efficiency in manual cable tie operations; the present invention especially provides a design scheme for a fully electric driven feeding, dividing and pushing linkage mechanism.

[0004] The present invention is mainly designed to solve the problem of automatic bundling and positioning of one-piece fixed cable ties or cable ties with labels having different head shapes, but the present invention is also applicable to the automatic bundling operation of one-piece ordinary cable ties with regular head shapes. In the following text, for the convenience of expression, different types of cable ties are collectively referred to as cable ties or one-piece 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; 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; 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, 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; 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.

[0007] 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.

[0008] 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.

[0009] 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; 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.

[0010] 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.

[0011] 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. Furthermore, the slider and the guide rail are both located inside the circumference of the wheel disc.

[0012] Furthermore, the sliding block is provided with a guide groove in the vertical direction for installing a dividing knife.

[0013] 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.

[0014] The pushing mechanism includes: a pushing rod and a cam driving the pushing rod to move, the action end of the pushing rod is installed on the outer side of the circumference 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.

[0015] 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.

[0016] 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.

[0017] Furthermore, the slider and / or the dividing knife are provided with convex ribs configured to clamp the head of the cable tie; 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.

[0018] 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.

[0019] The automatic cable tie method provided by the present invention comprises the following steps: 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; 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; S3: The push rod moves to pre-position the cable tie separated from the cable tie connecting plate in step S2 on the push slider; 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; S5: The tensioning wheel rotates to tighten the cable tie, and the cutting knife cuts off the tightened cable tie; 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.

[0020] The beneficial effects of the present invention are: 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. 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; 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. 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

[0021] 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; Figure 2 This is an axonometric view of a cable tie tool embodiment of the present invention, with the housing removed; Figure 3 A top view of the present invention; 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; Figure 5 For Figure 3 The corresponding AA section view, in which the dividing knife cam acts on the dividing knife top rod connecting rod, the dividing knife top rod pushes the dividing knife upward, and the dividing knife separates the cable tie from the cable tie connecting plate; Figure 6 For Figure 3 The corresponding AA section view, in which the push rod cam is about to act on the push rod connecting rod, the push rod pushes the cable tie and the dividing knife downward, and the cable tie is positioned in the slider; Figure 7 For Figure 4 , Figure 5 , Figure 6 The corresponding right view; Figure 8The isometric view of the guide rail, the slider and the dividing knife provided in the embodiment of the present invention is provided. Part of the convex ribs on the slider are integrated with the dividing knife. The dividing knife can slide up and down in the guide rail in the direction of the arrow in the figure. Fig. 9 For Figure 4 For reference, the rear view has the wheel removed, mainly showing the linkage action mechanism of the indexing cam, the dividing knife, and the push rod, with the slider in the pre-positioning position of the cable tie; Fig.10 For Figure 4 For reference, the rear view has the wheel removed, mainly showing the linkage mechanism of the indexing cam, the dividing knife, and the push rod. The slider and the cable tie are sent to the bundling working position; Fig.11 An axonometric diagram of an embodiment of the present invention applied to an automatic cable tie tool; Fig.12 It is a front view of the application of an embodiment of the present invention in an automatic cable tie tool; Fig.13 For Fig.12 A top view of the application of the corresponding automatic cable tie tool; Fig.14 For Fig.13 The corresponding TT section view, in which the push rod is retracted to the upper end and the cable tie is positioned in the slide block; Fig.15 For Fig.13 In the corresponding TT cross-sectional view, the second guide claw is closed, and the slider together with the cable tie is sent to the bundling working position; Fig.16 For Fig.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; Fig.17 For Fig.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; Fig.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; Fig.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; Fig. 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.

[0022] 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.

[0023] Attached Figures: 000, controller; 001, wire; 1, slider; 104, rib; 100, motor; 11, trigger; 110, reduction box; 111, swing arm; 112, pin; 113, connecting rod; 114, pin; 117, trigger return spring; 118, trigger center axis; 119, return spring; 2, guide rail; 20, cable tie; 201, cable tie head; 202, cable tie connecting plate; 203, positioning hole; 3, first guide claw; 31, first guide claw center axis; 30, dividing knife; 302, dividing knife top rod; 304, pin; 305, dividing knife top rod connecting rod; 307, cam roller; 308, dividing knife cam; 309, dividing knife top rod return spring; 31, first guide claw rotating shaft; 4, second guide claw; 41, second guide claw center axis; 5. Frame; 6. Tension wheel; 600. Motor; 610. Speed ​​reducer; 620. Cycle control gear; 621. Sensing unit; 622. Sensor; 630. Tension gear; 7. Cutting knife; 8. Intermittent indexing mechanism; 800. Motor; 801. Wheel; 802. Positioning column; 803. Pitch roller; 804. Indexing cam; 805. Camshaft; 806. Centering wheel; 807. Profile pit; 808. Pitch pin; 809. Locking block; 810. Incomplete gear; 81 1. Gear; 812. Gear shaft; 813. Gear box; 820. Gear; 814. Pin; 815. Spring; 9. Push rod; 901. Push cylinder; 902. Push cylinder bracket; 903. Pin; 904. Push rod connecting rod; 905. Connecting rod center shaft; 906. Cam roller; 907. Cam shaft; 908. Push rod cam; 909. Push rod return spring; 10. Housing; 12. Waste box; 121. Waste box door panel; 122. Door panel rotating shaft. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments: Please refer to Figure 1 and Figure 2 In this embodiment, Figure 2 is an isometric view of the present invention applied to an automatic cable tie tool, with the housing removed, such as Figure 2 As shown, the motor 800 passes through the gear 820 and then through the gear box 813 to output to the gear shaft 812. Figure 1 is an isometric view of the present invention, omitting the motor 800, the gear 820 and the gear box 813. 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.

[0025] 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; For further information, please refer to Figure 1 and Figure 2 ,and Fig.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; 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; 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.

[0026] For further information, please refer to Figure 1 and Figure 2The end face of the wheel disc 801 has a plurality of pitch pins 808 extending along its axial direction, and 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 801 or are tightly mounted on the wheel disc 801. In order to reduce friction, a pitch roller 803 is installed in an empty sleeve on each pitch pin 808. A double-acting indexing cam 804 is also pivotally connected to the end face of the wheel disc 801. The pitch roller 803 or the pitch pin 808 is installed in the groove of the double-acting cam 804. The outer peripheral surface of the pitch roller 803 or the pitch pin 808 is in contact with the two side surfaces of the groove of the double-acting cam 804. The two side surfaces of the groove of the double-acting cam 804 have the function of driving or locking the wheel disc 801, driving the wheel disc 801 to make intermittent indexing rotation.

[0027] Please continue to refer to Figure 3-Figure 7 In this embodiment, Figure 3 is a top view of the present invention, Figure 4-Figure 6 The indexing action of the wheel 801, the upward movement of the dividing knife 30 to separate the cable tie, and the action of the push rod 9 pressing down the cable tie 20 and the dividing knife 30 are shown to be performed in a time-logic order; Figure 4 In the process, the double-acting cam 804 has just completed the indexing action of the wheel disc 801. At this time, the gear 820 drives the double-acting cam 804 to continue to rotate while the wheel disc 801 is locked by the double-acting cam 804; and the cam shaft 907, driven by the gear 820, drives the rising edge of the dividing knife cam 308 to act on the cam roller 307, so that the dividing knife top rod connecting rod 305 rotates clockwise around the connecting rod center axis 905, and the dividing knife top rod connecting rod 305 drives the dividing knife top rod 302 to move upward through the pin shaft 304, and the dividing knife top rod 302 drives the dividing knife 30 to slide upward in the slider 1 to separate the cable tie 20 from the cable tie connecting plate 202; Figure 5 In the process, the dividing knife 30 has cut off and separated the cable tie 20 from the cable tie connecting plate 202. At this time, the gear 820 drives the double-acting cam 804 to continue to rotate, while the wheel 801 is locked by the double-acting cam 804; the cam shaft 907 drives the rising edge of the push rod cam 908 driven by the gear 820 to act on the cam roller 906, so that the push rod connecting rod 904 rotates counterclockwise around the connecting rod center axis 905, and the push rod connecting rod 904 drives the push rod 9 to move downward through the pin 903. The push rod 9 presses the cut cable tie 20 onto the horizontal section bottom plate of the L-shaped dividing knife 30. At this time, the falling edge of the dividing knife cam 308 contacts the cam roller 307, and the dividing knife top rod reset spring 309 pulls the dividing knife top rod 302 downward to reset; Figure 6In the process, the push rod 9 pushes the cut cable tie 20 and the dividing knife 30 downward into the slider 1 for positioning. At this time, the gear 820 drives the double-acting cam 804 to continue to rotate, and the wheel 801 is locked by the double-acting cam 804. The cam shaft 907, driven by the gear 820, drives the descending edge of the push rod cam 908 to contact the cam roller 906, and the push rod reset spring 909 pulls the push rod 9 upward to reset.

[0028] It should be noted that, in this embodiment, because the dividing knife cam 308 and the pushing rod cam 908 are both single-acting cams, it is necessary to set a dividing knife top rod return spring 309 and a pushing rod return spring 909 to pull the dividing knife top rod 302 and the pushing rod 9 back to their original positions respectively.

[0029] Please continue to refer to Figure 8 , Fig. 9 , Fig.10 In this embodiment, Figure 8 It is an axonometric diagram showing the assembly relationship of the slider 1, the guide rail 2, the dividing knife 30, the cable tie 20, and the swing arm 111, the pin 112, the connecting rod 113, and the pin 114 for driving the slider 1; Fig. 9 and Fig.10 So Figure 4 The rear view is for reference; Figure 8 In the embodiment, the slider mechanism mainly includes: a slider 1 and a guide rail 2, and also includes: a motor 100, a reduction gearbox 110, a swing arm 111, a pin 112, a connecting rod 113, and a pin 114. The slider 1 and the guide rail 2 are matched with a rectangular groove. 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 112, the connecting rod 113, and the pin 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 vertical rectangular guide groove. The dividing knife 30 is L-shaped. The vertical section of the dividing knife 30 cooperates with the vertical rectangular guide groove of the slider 1. The dividing knife 30 can slide with the slider 1, and can also slide up and down along the vertical rectangular guide groove of the slider 1. Fig. 9 The position shown is that the slider 1 is in the pre-positioning position of the cable tie. After the material dividing knife top rod 302 and the push 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 112. The connecting rod 113 drives the slider 1 together with the cable tie 20 from the pre-positioning position along the guide rail 2 to the bundling working position through the pin 114. Fig.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, 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; 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; Alternatively, the four ribs 104 are integrally formed with the slider 1; 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.

[0030] Please continue to refer to Fig.11 , Fig.12 and Fig.13 In this embodiment, Fig.11 It is an axonometric view of the integrated fixed cable tie loaded with the automatic cable tie tool. Fig.12 This is the main view of the automatic cable tie tool. Fig.13 is with Fig.12 The corresponding main view.

[0031] Please continue to refer to Figure 14 to Figure 17 In this embodiment, Figure 14 to Figure 17 For the AA section view, Fig.14 As 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; Fig.15As 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 Fig.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; Fig.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; Fig.17 As shown, after the bundling is completed, the second guide claw 4 is opened, and after the head of the cable tie 20 withdraws from the slider 1, the motor 100 drives the swing arm 111 to press Fig.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.

[0032] To summarize the above process, a strapping cycle that follows a logical time sequence includes: 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; S2. The dividing knife 30 moves upward to separate the cable tie 20 from the cable tie connecting plate 202; S3. The push rod 9 pushes the separated cable tie 20 downward into the slider 1 for positioning; 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; S5: The tensioning wheel 6 rotates to tighten the cable tie, and the cutting knife cuts the tightened cable tie; 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.

[0033] Please continue to refer to Fig.18 , this embodiment is Figure 1 Alternative designs of the structures shown, such as Fig.18As 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.

[0034] It should be noted that Fig.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.

[0035] It should also be noted that: Fig.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.

[0036] Please continue to refer to Fig.19 , this embodiment is also Figure 1Another alternative design scheme of the structure shown is to use incomplete gear meshing instead of cam to drive the wheel disc 801 to perform intermittent indexing motion. The incomplete gear 810 is arranged on the inner side of the circumference of the wheel disc 801. The circumference of the incomplete gear 810 has only one tooth and an outward convex arc segment. A plurality of evenly distributed internal tooth profiles that can mesh with the teeth of the incomplete gear 810 are arranged on the inner circumference of the wheel disc 801. The wheel disc 801 is also provided with a plurality of evenly distributed concave arc surfaces that can cooperate with the arc segment of the incomplete gear 810. The incomplete gear 810 is driven by a gear 820, and the gear 820 also drives another two gears 820. The dividing knife cam 308 and the push rod cam 908 are respectively coaxially connected to the gear 820; the power is transmitted to the single incomplete gear 810, the dividing knife cam 308 and the push rod cam 908 through the gear 820. When the teeth of the incomplete gear 810 mesh with the internal tooth profile on the wheel disc 801, the incomplete The convex arc segment of the gear 810 is out of contact with the concave arc surface of the wheel disc 801, and the wheel disc 801 is in a dividing motion state. When the teeth of the incomplete gear 810 are just out of mesh with the (incomplete) inner tooth profile on the wheel disc 801, the convex arc segment of the incomplete gear 810 remains in contact with the concave arc surface of the wheel disc 801, and the wheel disc 801 is in a locked state. The incomplete gear 810 continues to rotate, and 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 on the cam roller 906 to move the push rod 9 downward, pushing the cable tie head 201 into the slider 1 for positioning. This embodiment proves that the intermittent dividing mechanism includes at least one wheel disc 801 and an incomplete gear 810 with only one tooth on its periphery.

[0037] It should be noted that Fig.19 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.

[0038] Further, or Fig.19 In the embodiment shown, the concave arc on the wheel disc 801 is eliminated, and the convex arc on the incomplete gear 810 is eliminated, thereby increasing Fig.18 The locking block 809 of the illustrated embodiment is an intermittent indexing mechanism composed of a wheel disc 801, an incomplete gear mechanism and a locking block 809. This embodiment explains that the intermittent indexing mechanism includes at least a wheel disc 801, an incomplete gear 810 with only one tooth on the periphery, and a locking block 809 elastically pivoted to the frame.

[0039] It should also be noted that: Fig.19 The working principle of the incomplete gear indexing mechanism is similar to that of the grooved wheel mechanism, that is, a driving disc is arranged outside the circumference of the wheel disc 801, a pin and an outer convex arc are installed on the driving disc, and radial grooves and inner concave arcs are arranged on the wheel disc 801 in an alternating and uniform manner. The pin on the driving disc engages with the groove of the wheel disc 801 to drive the wheel disc 801 to rotate, and the outer convex arc on the driving disc cooperates with the inner concave arc of the wheel disc 801 to lock the wheel disc 801, thereby realizing the intermittent indexing motion of the wheel disc 801. It should be noted that: Fig.19 The incomplete gear mechanism shown requires less space than the grooved wheel mechanism and has a compact structure. This embodiment illustrates that the intermittent indexing mechanism includes at least one wheel disc 801 and a grooved wheel mechanism.

[0040] Please continue to refer to Figure 2 In this embodiment, the first guide claw 3, the tension wheel 6, and the cutting knife 7 are all driven by the motor 600 to drive the reduction box 610, and the reduction box 610 drives the periodic control gear 620, and the periodic control gear 620 drives the tensioning gear 630, and the tensioning gear 630 is coaxially fixed with one of the wheels of the tension wheel 6, and the periodic control gear 620 is provided with a sensing part 621, and a sensor 622 is arranged adjacent to the end surface of the periodic control gear 620, and the sensor 622 detects the sensing part 621 and sends a signal to stop the motor 600. In each bundling and tightening cycle, the periodic control gear 620 rotates one circle, and the first guide claw 3 and the cutting knife 7 move at least once; the slider 1 is driven by the motor 100 to drive the reduction box 110 to drive the swing arm 111 to swing, and the swing arm 111 drives the connecting rod 113 through the pin 112, and the connecting rod 113 drives the slider 1 along the guide rail 2 to the pre-positioned position ( Figure 2 middle right end) and the strapping work position ( Figure 2 The slider 1 moves the cable tie to the bundling position before bundling, and returns to the pre-positioned position after bundling is completed. Figure 2 As shown, the intermittent indexing mechanism 8, the push rod 9, and the dividing knife 30 are a linkage mechanism driven by a motor 800 through a reduction box 810. The controller 000 controls the motor 800, the motor 100 and the motor 600 to start or stop in sequence according to time logic. At any time in a strapping cycle, only one of the motor 800, the motor 100 and the motor 600 is rotating.

[0041] Please continue to refer to Fig. 20In this embodiment, one-piece fixed cable ties with irregular head shapes such as airplane heads, mushroom heads, and fir tree heads, cable ties with labels, and ordinary cable ties with regular head shapes are displayed. As long as the convex ribs 104 or contoured pits are reasonably arranged on the slider 1 and / or the dividing knife 30 according to the specific head shape of the cable tie, the present invention can realize automatic bundling of various one-piece fixed cable ties with irregular head shapes, or cable ties with labels, or ordinary cable ties with regular head shapes.

[0042] According to the disclosure and teaching of the above description, those skilled in the art to which the present invention belongs may 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 scope of protection of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the present invention. Industrial Applicability

[0043] The present invention provides a feeding, dividing and pushing mechanism of a cable tie tool and an automatic cable tie method, which realize the automatic bundling of cable ties and improve the disadvantages of high 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 cable tie tool to operate at high altitudes or in the field. The present invention is especially designed for the automatic bundling of bulk or one-piece fixed cable ties or labeled cable ties with different head shapes, but the present invention is also similarly applicable to the automatic bundling of bulk or one-piece ordinary cable ties with regular head shapes. The degree of generalization is high, which brings great convenience to the bundling operation.

Claims

1. An intermittent indexing mechanism for a cable tie tool, Features: It comprises a wheel disc, a single-acting cam and a locking block elastically connected to the frame, wherein the end surface of the wheel disc is evenly arranged with a plurality of pitch pins extending along its axial direction or radial direction, wherein 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; it also comprises a single-acting indexing cam or a pawl pivotally connected to the frame and a locking block elastically connected to the frame, wherein the single-acting indexing cam or the pawl is configured to drive the pitch pin or the 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; Or at least comprises a 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 to realize intermittent indexing motion of the wheel disc; Or at least one wheel disc and an incomplete gear with only one tooth on its periphery, alternately and evenly distributed incomplete internal tooth profiles and inner concave arcs are arranged on the inner circumference of the wheel disc, 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 intermittent indexing motion of the wheel disc; Or at least includes a wheel disc, an incomplete gear with only one tooth on the periphery and a locking block elastically connected to the frame, incomplete internal tooth profiles are arranged alternately and evenly 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, so as to realize the intermittent indexing movement of the wheel disc; 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.

2. An intermittent indexing mechanism for a cable tie tool according to claim 1, Features: 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 arranged on the circumference of the wheel disc.

3. An intermittent indexing mechanism for a cable tie tool according to claim 1, Features: 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.

4. The intermittent indexing mechanism of a cable tie tool according to claim 1, Features: A material dividing mechanism, a material pushing mechanism, and a slider mechanism are also provided; the material dividing mechanism includes a material dividing knife for separating each of the one-piece cable ties from the cable tie connecting plates in the one-piece cable ties; 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; the material pushing mechanism includes at least a pushing rod.

5. An intermittent indexing mechanism for a cable tie tool according to claim 4, Features: The intermittent indexing mechanism of the automatic cable tie tool conveys one cable tie to the working position of the dividing mechanism each time, the dividing knife separates the cable tie from the cable tie connecting plate, and the pushing rod pushes the cable tie separated from the cable tie connecting plate by the dividing knife to the slider for pre-positioning.

6. An intermittent indexing mechanism for a cable tie tool according to claim 4 or 5, Features: The wheel disc, the pushing rod and the dividing knife are a linkage mechanism driven by a motor.

7. An intermittent indexing mechanism for a cable tie tool according to claim 4, Features: The dividing knife is L-shaped.

8. An intermittent indexing mechanism for a cable tie tool according to claim 4, Features: 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.

9. An intermittent indexing mechanism for a cable tie tool according to claim 4, Features: The intermittent indexing mechanism, material dividing mechanism, material pushing mechanism, and slider mechanism are all driven by electric power.

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