CN117944934A

CN117944934A - Tensioning mechanism with floating center distance for automatic strapping tool

Info

Publication number: CN117944934A
Application number: CN202410175076.1A
Authority: CN
Inventors: 许修义
Original assignee: Shenzhen Shi Weide Automation Technology Co ltd
Current assignee: Shenzhen Shi Weide Automation Technology Co ltd
Priority date: 2018-08-27
Filing date: 2018-08-27
Publication date: 2024-04-30
Also published as: CN117818964A; CN108945564A; CN117902097A; CN118047085A; CN117818963A

Abstract

The utility model provides a take-up mechanism of automatic ribbon instrument that has center distance that floats which characterized in that: comprising the following steps: a driving center tension wheel, an auxiliary tension wheel and a transmission gear; the tightening force adjusting screw and the tightening force adjusting spring are arranged to pull or press the at least 1 auxiliary tightening wheel to or towards the driving center tightening wheel, and the elastic force of the tightening force adjusting spring can be adjusted by rotating the tightening force adjusting screw, so that the pressure of the auxiliary tightening wheel to the binding belt can be adjusted; the center distance between the auxiliary tightening wheel and the driving center tightening wheel is floating; at least 1 transmission gear is coaxially and fixedly connected with the driving center tightening wheel to provide power for tightening the tie by the tightening mechanism, and the auxiliary tightening wheels are arranged along the circumference of the driving center tightening wheel; the tensioning mechanism is arranged on a frame of the automatic strapping tool, and the frame is either an integral part or split into 2 parts or a plurality of parts; the machine frame is provided with a U-shaped groove for guiding the binding belt, the machine frame is also provided with a pit for positioning the head of the binding belt, and the pit is rectangular or square sinking; rectangular small holes are formed in the pits in the machine frame, the small holes are located in the middle of the pits, and the tail of the binding belt penetrates through the small holes to enter the tensioning mechanism.

Description

Tensioning mechanism with floating center distance for automatic strapping tool

Technical Field

The invention relates to a working head of a tool, in particular to a tensioning mechanism with floating center distance for an automatic strapping tool.

Background

For the automatic bundling of common nylon ties, there is a desktop tie machine design in China, and the machine has the following disadvantages: the machine is fixed, only the workpiece can be moved, and the use is inflexible; because of space limitation, it cannot be used for site or internal construction of pipelines, tunnels or aerial cables of airplanes, ships, trains, automobiles, household appliances, communication equipment and the like; the desktop type ribbon machine has some defects in design, and is inconvenient and unreliable to use; moreover, the desktop automatic strapping machine on the market is generally driven by 5 motors, wastes parts and has huge volume; the foreign automatic binding gun using the integrated binding gun is arranged, but the foreign automatic binding gun must use a special integrated binding gun with high cost, and the foreign integrated automatic binding gun has a large volume and can be basically only used for binding the wire harness; the hand-held automatic strapping tool has been designed, which adopts a design that a gun head is separated from a main machine and is connected with the main machine and the gun head by a pipeline, and compared with a desktop automatic strapping machine, the hand-held automatic strapping tool can greatly improve the application range and the practical flexibility; compared with the foreign integrated automatic ribbon gun, the ribbon gun greatly reduces the use cost. Although the aforementioned "a hand-held automatic strapping tool" has significant relative advantages over desktop and integrated automatic strapping tools, it is still not smooth or usable at all in many situations encountered in application practice, such as: 1. the binding tape is required to pass through one small hole in the part or pass through a narrow space in the part, 2, the binding tape is required to pass through two small holes in the part for rebinding, 3, and in the case of insufficient space around the object to be bound.

Disclosure of Invention

The invention aims to solve the defects of the existing automatic binding machine or automatic binding tool in the market and designs a working head of the automatic binding tool which can be suitable for various different use requirements.

The invention is realized by the following technical scheme: the working head of the automatic strapping tool comprises a shell, a frame, a strapping guide rail, a cycle control mechanism, a guide claw mechanism, a tensioning mechanism, a cutter and a cutter driving mechanism; the machine frame is arranged in the shell, pits are arranged on the machine frame for positioning the head of the binding tape, U-shaped grooves are arranged on the machine frame for guiding the binding tape, a square or trapezoid guiding channel matched with the shape of the head of the binding tape is arranged in the binding tape guiding rail, the square guiding channel of the binding tape guiding rail is communicated with one end of the U-shaped groove in the machine frame, the U-shaped groove of the guiding claw mechanism is communicated with the U-shaped groove in the machine frame to form a closed U-shaped groove guiding ring, or the U-shaped groove of the guiding claw mechanism, the U-shaped groove in the machine frame and the surface of the binding part are communicated to form a closed guiding ring, the U-shaped groove of the guiding claw mechanism and the symmetrical center surface of the U-shaped groove in the machine frame are both positioned in the center surface of the working head of an automatic binding tape tool, the tightening mechanism is arranged on the machine frame and between the cutter head of the binding tape and the pulling wheel, and the tightening mechanism is connected with the cutting knife driving mechanism and directly drives the tightening mechanism or indirectly drives the tightening mechanism.

Further, the frame is either an integral part or split into 2 parts or a plurality of parts and fixedly connected through screws, and is used for installing a binding belt guide rail, a cycle control mechanism, a tensioning mechanism, a cutter and a cutter driving mechanism.

Further, a window part is arranged on the frame or the detached part, the window part is detached, the part of the tensioning mechanism can be seen, the fragments adhered to the part of the tensioning mechanism can be cleaned conveniently, and the window part is also one of the mounting ends of the tensioning mechanism.

Further, the frame is provided with a pit, the pit is rectangular or square sinking, and the pit and the end surface of one guide claw of the guide claw mechanism are used together to limit 6 degrees of freedom of the head part of the binding belt; or the end face of the guide claw is not in direct contact with the tie head, but the tie head position is limited by the strapped object between the end face of the guide claw and the tie head, the end face of one of the guide claw mechanisms acts on the strapped object, and the end face of one of the guide claw mechanisms and the pit limit 6 degrees of freedom of the tie head in an indirect manner.

Further, a rectangular small hole is formed in the pit in the frame, the small hole is located in the middle of the pit, and the tail of the binding belt passes through the small hole and enters the tensioning mechanism.

Further, the guide channel of the ribbon guide rail is provided with 4 guide surfaces, the cross section of the guide channel surrounded by the 4 guide surfaces is square, the 4 guide surfaces are respectively matched with 4 surfaces of the 6 surfaces of the outline of the ribbon head or edges on the 4 surfaces of the ribbon head, the ribbon guide rail is used for ribbon movement guide, and the length direction of the guide channel of the ribbon guide rail is the ribbon movement track, namely the ribbon movement direction. The arrangement of the tie guide rail: either such that the strap movement path is located within a central plane of the working head of the one automatic strap tool or such that the strap movement path is perpendicular to the central plane of the working head of the one automatic strap tool. When the length direction (namely the movement track of the binding tape) of the guide channel of the binding tape guide rail is positioned in the central plane of the working head of the automatic binding tape tool, both the binding tape head and the binding tape body are limited to move in the guide channel of the binding tape guide rail, namely the binding tape guide rail conveys the binding tape to the U-shaped groove of the rack in a longitudinal direction; when the length direction of the guide channel (i.e., the strap motion trajectory) of the strap guide is perpendicular to the center plane of the working head of the automatic strap tool, only the strap head is constrained within the U-shaped slot of the strap guide and the length direction of the strap is perpendicular to the length direction of the guide, the strap guide conveys the strap "transversely" to the center plane of the working head of the automatic strap tool.

Further, the length direction of the guide channel of the tie guide rail (i.e., the tie movement track) is either straight or curved.

Further, when the length direction of the guide channel of the band guide rail (i.e., band movement path) is curved and the length direction of the guide channel of the band guide rail (i.e., band movement path) is perpendicular to the center plane of the working head of the one automatic band tool, it means that at least the end of the guide channel of the band guide rail is perpendicular to the center plane of the working head of the one automatic band tool.

Further, the most basic design of the guide claw mechanism comprises at least 2 guide claws, namely a first guide claw and a second guide claw, wherein U-shaped grooves are formed in the first guide claw and the second guide claw; or the first guide claw and the second guide claw are combined together to form a U-shaped groove, namely the first guide claw only provides one surface for guiding movement of the binding belt, and the second guide claw provides two side surfaces as the bottom of the U-shaped groove; when the second guide claw is folded with the first guide claw, the U-shaped groove of the second guide claw and the U-shaped groove of the frame are connected end to form a closed U-shaped groove guide ring, one end of the second guide claw and the pit in the frame act together to limit 6 degrees of freedom of the head of the ribbon, the circumference of the U-shaped guide ring is shortened by the action of the first guide claw, and the tail of the ribbon is penetrated into the hole of the head of the ribbon.

Further, or the first guide jaw is split into: the first stationary guide claw and the first hooking guide claw.

Further, or the second guide claw is split into: and a second motion guide claw. A second stationary guide jaw; or split into a second swing guide claw and a second sliding guide claw.

Further, the first guide claw, the second guide claw or any part of the moving guide claw separated from the first guide claw or the second guide claw is driven by an air cylinder, or driven by a motor to drive a cam or a motor to drive a connecting rod, or driven by a manual trigger to drive translation motion or swing motion.

The ribbon guide rail is used for conveying the ribbons into the guide jaw mechanism one by one for positioning, the ribbon guide rail is used for conveying the ribbons transversely in the direction perpendicular to the symmetrical center plane of the U-shaped groove of the guide jaw mechanism, and the ribbon guide rail is mainly used for realizing desktop bundling; or the feeding direction of the ribbon guide rail is positioned in the symmetrical center plane of the U-shaped groove of the guide claw mechanism to longitudinally convey the ribbon into the guide claw mechanism for positioning.

Further, when the working head of the automatic strapping tool is used for realizing desktop strapping, an angle error exists between the symmetrical center plane of the strapping and the symmetrical center plane of the U-shaped groove of the guide claw mechanism due to the transverse feeding mode of the strapping, and in order to reduce the influence of the angle error, two side surfaces of the U-shaped groove of the first guide claw of the guide claw mechanism are made into inclined planes, namely a horn mouth.

The tensioning mechanism includes: a driving center tension wheel, an auxiliary tension wheel and a transmission gear; the number of the driving center tightening wheels is at least 1, at least 1 transmission gear is fixedly connected with the driving center tightening wheels in a coaxial mode, the number of the auxiliary tightening wheels is 1, or 2, or more than 2, when the driving center tightening wheels are surrounded by the 2 or more than 2 auxiliary tightening wheels, the 2 or more than 2 auxiliary tightening wheels are arranged along the circumference of the driving center tightening wheels, and the 2 or more than 2 auxiliary tightening wheels enable the binding belt to form a certain wrap angle around the circumference of the driving center tightening wheels, so that larger tightening force can be provided.

Further, the at least 1 auxiliary tightening wheel and the driving center tightening wheel are designed to have a fixed center distance or designed springs to pull or press the at least 1 auxiliary tightening wheel toward or toward the driving center tightening wheel.

Further, each auxiliary tightening wheel is coaxially and fixedly connected with the transmission gear, namely, each auxiliary tightening wheel is driven in by power.

Further, the cycle control mechanism is: the sensor is arranged in the axial direction of the periodic gear, a gap is reserved between the sensor and the periodic gear in the axial direction of the periodic gear, at least one magnet or one bulge or one hole is arranged on the periodic gear, the sensor detects that the periodic gear rotates for N circles or 1/N circle, (N is a positive integer, generally, N is 1,2, 3 or 4, N is at least 1), and the sensor sends out a signal to control the external power to stop inputting so as to complete a bundling belt working period; the cycle control mechanism is either: the rack is combined with the gear, the rack drives the gear to drive the tensioning mechanism, the rack drives the gear to move towards one direction, a binding belt working period is completed, and the rack returns to reset reversely.

Further, a periodic gear of the periodic control mechanism is directly meshed with a transmission gear of the tensioning mechanism, and when the periodic gear rotates by a fixed angle to drive the transmission gear to rotate by a fixed circle number, namely the driving center tensioning wheel rotates by a fixed circumference, a cam coaxially and fixedly connected with the periodic gear drives a cutter to cut off the binding belt, so that 'fixed length' cutting is realized; or a three-end input-output mechanism is additionally arranged on the periodic gear and the transmission gear, and the three-end input-output mechanism comprises: the device comprises an adjusting screw, a vernier, an adjusting spring, a planet wheel base, an inner gear, an outer gear and a sun gear, wherein the periodic gear is meshed with the sun gear, an outer gear ring of the inner gear and an outer gear ring of the outer gear are meshed with a transmission gear of a tensioning mechanism, the adjusting screw is rotated to control the adjusting spring to pre-press force of the planet wheel base, and when the moment generated by the tensioning mechanism to the tightening force of the strap is equal to or greater than the moment generated by the adjusting spring to the pre-press force of the planet wheel base, the planet wheel base rotates and drives a cutter to cut off the strap, so that 'fixed moment' cutting is realized.

Further, when the fixed-length cutting method is adopted, a cam coaxially and fixedly connected with the periodic gear is a cutter driving mechanism; when the 'fixed moment' cutting method is adopted, the 'one three-end input and output mechanism' is a cutter driving mechanism; or when the periodic gear rotates to a certain fixed position (before one bundling period of the bundling belt is completed), mechanical or electric signals are obtained, and a cylinder or a crank connecting rod or a gear rack driven by an added motor is used as a cutter driving mechanism to drive a cutter to cut the bundling belt.

The working head of the automatic strapping tool can be used as a handheld tool, or a bracket is added, and the shell of the working head of the automatic strapping tool is fixed on the bracket by screws to be used as a fixed strapping tool.

Further, the working head of the automatic strapping tool is fixed on the support, the first guide claw of the guide claw mechanism is split into a first relatively static guide claw and a first relatively moving guide claw, and the second guide claw performs translational motion to realize that the strapping tape passes through 1 hole of the strapped workpiece or realize automatic strapping operation that the strapping tape passes through a small space of the strapped workpiece.

Further, the working head of the automatic strapping tool is fixed on the support, the guide claw mechanism integrally moves in a translation mode or swings around the fixed shaft, and the first guide claw moves in a swinging mode relative to the second guide claw, so that automatic strapping operation of a strapping tape penetrating through 2 holes of a strapped workpiece is achieved.

The invention has the beneficial effects that:

1. Compared with manual operation, the efficiency of automatic strapping operation is greatly improved, and the labor intensity of workers is greatly reduced;

2. The invention provides a core basic design, the table top type band machine designed based on the invention can be used for the table top type band machine only by slightly changing the layout of the guide rail, compared with the conventional table top type band machine design of 5 motors, the structure is greatly simplified, and the simplified structure can lead the output action to respond rapidly and improve the reliability of the equipment.

3. The invention can be used as a handheld band tool and a fixed band machine, and can also realize various application requirements of 'band passing through a single hole of a part', 'band passing through 2 holes of a part' and 'band passing through a small gap of a part', which cannot be realized by the existing band tool, so that the adaptability to different strapped objects is greatly expanded, and the application range of the automatic band tool is greatly expanded;

4. The invention also provides different tightening-cutting-off logic relations and design methods such as fixed moment, fixed length and the like, and different tightening force requirements, different tightening-cutting-off response modes and different options provided by the internal space layout design of the automatic strapping tool for the strapped workpieces.

Drawings

FIG. 1 is a top view of the present invention as a hand-held strapping tool;

FIG. 2 is a front view of the present invention as a hand-held strapping tool;

FIG. 3 is a front view of the present invention with a face housing, frame, etc. removed;

FIG. 4 is a cross-sectional view A-A corresponding to FIG. 1, with the guide pawl mechanism in an open position;

FIG. 5 is a cross-sectional view A-A corresponding to FIG. 1, with the guide jaw mechanism in a closed position;

FIG. 6 is a front elevational view, partially in section, A-A corresponding to FIG. 1, of the present invention with one of the face-piece and the cycle control mechanism removed;

FIG. 7 is a front view of the present invention with one of the face-piece and the cycle control mechanism removed and the guide pawl mechanism in an open position;

FIG. 8 is an enlarged cross-sectional view C-C corresponding to FIG. 7 showing the U-shaped slot design of the guide pawl mechanism;

FIG. 9 is an enlarged cross-sectional view B-B corresponding to FIG. 3, showing the design of the tie guide rail;

FIG. 10 is a rear view of the present invention;

FIG. 11 is an isometric view of a frame showing a U-shaped slot, pit, window feature of the frame;

FIGS. 12-13 are front views of the present invention with one of the face-piece and cycle control mechanisms removed; the first guide claw and the second guide claw are driven by a cam, and the guide claws are respectively in an open state and a closed state;

FIGS. 14-15 are front views of the present invention with one face housing removed and the first and second guide jaws actuated by an air cylinder, the guide jaws being in an open and closed position, respectively;

FIG. 16 is a front elevational view, partially in section, A-A corresponding to FIG. 1, with one face shell removed and the second guide jaw separated into a second swing guide jaw and a second slide guide jaw;

FIG. 17 is a front view of the present invention with one of the face-pieces and the cycle control mechanism removed and with the cutter actuated by a cylinder;

FIG. 18 is a front view of the present invention with one face housing and cycle control mechanism removed, the first guide pawl being cam driven and the second guide pawl being air cylinder driven;

FIGS. 19-20 are front views of the present invention with one of the face housing, the frame and the cycle control mechanism removed; the display cam drives the cutter through the swing rod, and the guide claws are respectively in a closed state and an open state;

FIG. 21 is an isometric view of the present invention mounted on a bracket with a second guide jaw secured to the extension end of the cylinder to effect "bundling of a strap through a single hole of a part" with the guide jaw in an open condition;

FIG. 22 is an isometric view of the present invention mounted on a bracket with a second guide jaw mounted at the extension end of the cylinder to effect "strapping of a strap through a single hole of a part" showing the condition of the part being strapped;

FIG. 23 is a top view of the present invention mounted on a bracket for "strapping of a strap through a single hole of a part";

FIG. 24 is a front view of the invention mounted on a bracket, partially in section D-D corresponding to FIG. 23, for "strapping of a strap through a single hole of a part", with the guide jaws in a closed condition;

FIG. 25 is an isometric view of the present invention mounted on a bracket with both the first and second guide jaws mounted on the extended end of the cylinder to effect "strapping of a strap through two holes of the part" with the guide jaws in an open condition;

FIG. 26 is a top view of the present invention mounted on a bracket for "strapping of a strap through a single two holes of a part";

FIG. 27 is a front view of the invention mounted on a bracket, partially in section E-E corresponding to FIG. 26, for "strapping of a strap through two holes of a part", with the guide jaws in an open condition;

FIG. 28 is a front view of the invention mounted on a bracket, partially in section E-E corresponding to FIG. 26, for "strapping of a strap through two holes of a part", with the guide pawl in a closed position showing the strap through two holes of the part being strapped;

FIG. 29 is a front view of the invention mounted on a bracket, partially in section E-E corresponding to FIG. 26, for "strapping of a strap through two holes of a part", with the second guide jaw in a hooked condition, the strap being engaged by the tensioning mechanism;

FIG. 30 is a top view of the present invention mounted on a bracket for "strapping of a strap through a narrow space of a part";

FIG. 31 is a front view of the present invention mounted on a bracket, corresponding to FIG. 30, with the first and second guide jaws separated into two parts for "strapping of a strap through the narrow space of the parts", the guide jaws being in an open position;

FIG. 32 is a cross-sectional F-F view corresponding to FIG. 31, with the first and second guide jaws separated into two parts, respectively, for "strapping of a strap through a narrow space of the parts", and with the guide jaws in a closed condition;

FIG. 33 is an enlarged partial cross-sectional view of F-F corresponding to FIG. 30, with the first hooked guide pawl actuated;

FIG. 34 is a cross-sectional F-F view corresponding to FIG. 30, with the first and second guide jaws separated into two pieces, respectively, with the coils of the motor stator in a tie-up completed state;

FIG. 35 is a top view of the present invention mounted on a bracket for "strapping of a strap through a narrow space of a part";

FIG. 36 is a front view of the invention mounted on a bracket, partially in section G-G corresponding to FIG. 35, for "strapping of a strap through a narrow space of a part" with the first and second guide jaws closed with clearance, the guide jaws coacting with the surface of the part being strapped (the silicon steel sheet of the motor stator) to provide strap guidance;

FIG. 37 is a front view of the invention mounted on a bracket, partially sectioned G-G corresponding to FIG. 35, for "strapping of a strap through a narrow space of a part", with the coils of the motor stator in a strapping completed state;

FIG. 38 is an isometric view of the present invention mounted on a bracket for use as a stationary tie tool;

FIG. 39 is a top view of the present invention mounted on a bracket for use as a stationary strapping tool;

Fig. 40 is a front view of the present invention mounted on a bracket, corresponding to fig. 39, with the second guide pawl driven by a cylinder built into the housing;

FIG. 41 is a cross-sectional H-H view corresponding to FIG. 39;

FIG. 42 is a sectional view I-I corresponding to FIG. 39;

FIG. 43 is an isometric view of the present invention itself being a hand-held strapping tool mounted on a bracket and employing a pneumatic cylinder to trigger a trigger for use as a stationary strapping tool.

FIG. 44 is an isometric view of the present invention as applied to a desktop strapping machine;

fig. 45 is a partial enlarged view of T corresponding to fig. 44;

FIG. 46 is a top view corresponding to FIG. 44;

FIG. 47 is an L-L sectional view corresponding to FIG. 46;

fig. 48 is an enlarged view of N part corresponding to fig. 47;

FIG. 49 is a cross-sectional view of M-M corresponding to FIG. 46;

FIG. 50 is a J-J cross-sectional view corresponding to FIG. 46;

fig. 51 is a right side view corresponding to fig. 46;

FIG. 52 is a K-K cross-sectional view corresponding to FIG. 46;

FIG. 53 is a cross-sectional O-O view corresponding to FIG. 52 showing the beveled design on either side of the U-shaped slot of the first guide jaw;

FIG. 54 is a cross-sectional view A-A corresponding to FIG. 1, in a "constant torque" cutoff mode, with only one auxiliary tensioner design;

FIG. 55 is an isometric view of a tensioning mechanism showing two auxiliary tensioning wheels circumferentially disposed about a central active tensioning wheel, with the two auxiliary tensioning wheels being driven by a drive gear, respectively;

FIGS. 56, 57 are isometric views of different views of the "fixed torque" cutoff design showing the transmission from the cycle gear to the take-up mechanism;

FIG. 58 is an enlarged cross-sectional view B-B corresponding to FIG. 3 showing the combination of the tie guide rail and the U-shaped slot arcuate plate of the feed roller.

The specific description is as follows:

In the above figures, A-A, E-E, F-F, G-G, H-H, K-K are the central plane of the working head of the automatic strapping tool and the symmetrical central plane of the U-shaped groove of the guide jaw mechanism 5; M-M, K-K in the figure is the centre of symmetry of the tie 06; the U-shaped groove refers to an unsealed square groove or an unsealed trapezoid groove formed by connecting three surfaces, wherein the square is square or rectangular; the term "closed" U-shaped slot guide in this context does not refer to a seamless connection of the U-shaped slots, allowing for gaps at the seam without causing instability in the movement of the tie.

Reference numerals: 01. a working head of an automatic strapping tool; 02. a bracket; 03. a workpiece having a hole; 04. a workpiece having two holes; 05. a motor stator; 06. a tie; 07. a trigger cylinder; 08. a trigger pressure plate; 1. a face shell; 2. a frame; 210. a frame body; 220. a frame cover plate; 230. a mounting plate; 211. pit; 212. a small hole; 213. a U-shaped groove; 220. a frame cover plate; 2201. a window part; 230. a correction block; 2301. correcting the direction transversely; 2302. a longitudinal correction direction; 3. a tie guide rail; 30. ratchet wheel feeding device; 301. a ratchet wheel; 302. a clutch shaft; 303. a spring; 304. a friction plate; 305. an adjusting nut; 309. a motor and a reduction gearbox; 4. a cycle control mechanism; 401. a periodic gear; 402. a sensor; 403. magnets or protrusions or holes; 5. a guide claw mechanism; 51. a first guide claw; 5101. a first hooking guide jaw; 5102. a first stationary guide jaw; 5201. a second motion guide jaw; 5202. a second stationary guide jaw; 511. the first guide claw rotates the central shaft; 512. a first guide jaw driving pin; 513. a fork lever; 514. a shifting fork rod center pin; 515. a connecting rod; 516. a connecting rod center pin; 517. a driven roller; 518. a connecting rod return spring; 52. a second guide claw; 5201. a second motion guide jaw; 5202. a second stationary guide jaw; 5203. a second swing guide claw; 5204. a second sliding guide claw; 5205. a guide claw return spring; 521. a second guide jaw center pin; 522. a trigger link; 523. a trigger center pin; 524. a trigger; 525; a trigger return spring; 531. a first guide jaw cylinder; 532. a cylinder mounting pin; 541. a guide rail; 542. a second guide jaw cylinder; 551. a driven roller; 552. a cam; 6. a tensioning mechanism; 611. a driving center tightening wheel; 612. an active center tightening shaft; 621. an auxiliary tightening wheel; 622. an auxiliary tightening shaft; 623. a support plate; 624. a support plate center pin; 625. a tension adjusting spring; 626. tensioning force adjusting screws; 7. a cutter; 8. a cutter driving mechanism; 80. a three-terminal input/output mechanism; 801. adjusting a screw; 802. a cursor; 803. an adjusting spring; 804. a planetary gear; 805. a planet wheel base; 806. a sun gear; 807. an inner gear and an outer gear; 808. a poking pin; 81. a cam; 811. a lever; 812. a lever center pin; 813. a cutter return spring; 821. a cylinder; 822. a cutter driving pin; 9. a motor and a reduction gearbox; 10. an electrical control board; 11. a data line; 12. a feed pipe;

Detailed Description

The invention is further described with reference to the accompanying drawings and detailed description below:

Example 1 (overall structure and function):

As shown in fig. 1, 2 and 3: the working head of the automatic strapping tool comprises a shell 1, a frame 2, a strapping guide rail 3, a cycle control mechanism 4, a guide claw mechanism 5, a tensioning mechanism 6, a cutter 7 and a cutter driving mechanism 8; as shown in fig. 1 to 7: the motor and reduction gearbox 9, the electric control board 10, the data wire 11 and the feeding pipe 12 are arranged on the shell 1, and the electric control board 10, the data wire 11 and the feeding pipe 12 are arranged on the shell. The machine frame 2 is arranged in the shell 1, a pit 211 is arranged on the machine frame 2 for positioning the head of the ribbon, a U-shaped groove is arranged on the machine frame 2 for guiding the ribbon, a square guiding channel with a cross section shape matched with the shape of the head of the ribbon is arranged in the ribbon guide rail 3, the square guiding channel of the ribbon guide rail 3 is communicated with one end of the U-shaped groove in the machine frame, the U-shaped groove is arranged on the guiding claw mechanism 5, when the guiding claw mechanism 5 is closed with the machine frame 2, the U-shaped groove in the machine frame 2 is communicated with the U-shaped groove of the guiding claw mechanism 5 to form a closed guiding ring, the circumference of the guiding ring is equal to or larger than the length of the ribbon according to the bottom of the U-shaped groove, the U-shaped groove of the guide claw mechanism 5 and the symmetrical center surface of the U-shaped groove in the frame are both positioned in the center surface of the working head of the automatic strapping tool, the tensioning mechanism 6 is composed of a plurality of tensioning wheels, the tensioning mechanism 6 is arranged on the frame 2, the cutter 7 is arranged on the frame 2 and positioned between the strapping head and the tensioning wheels, the cutter driving mechanism 8 is connected with the cutter 7 and provides cutting power for the cutter 7, the motor, the reduction gearbox 9 and the cycle control mechanism 4 are arranged on a part mounting plate 230 of the frame 2, and the cycle control mechanism 4 drives the tensioning mechanism 6 through gears.

The working process comprises the following steps: as shown in fig. 1 to 7, 28 and 29: when the work 1 of the automatic strapping tool receives a trigger signal (the trigger signal is transmitted from a trigger, a foot switch, a sensing switch or an external device), a strapping is guided into the guide jaw mechanism 5 through the U-shaped groove of the frame 2 through the strapping guide rail 3, when the strapping head enters the pit 211 of the frame 2, the end part of the second guide jaw 52 of the guide jaw mechanism 5 and the pit 211 work together to limit 6 degrees of freedom of the strapping head, the U-shaped groove of the strapping body in the frame 2 and the U-shaped groove of the guide jaw mechanism 5 coil the strapping, the motor is started, the motor and the reduction gearbox 9 drive the periodical gear 401 of the periodical control mechanism 4 to rotate and drive the tensioning mechanism 6, the first guiding claw 51 is hooked to shorten the effective circumference of the guiding ring, so that the tail of the ribbon is forced to penetrate into the hole of the head of the ribbon and enter the tensioning mechanism 6, after the ribbon is tensioned by the tensioning mechanism 6, the cutter driving mechanism 8 drives the cutter 7 to act to cut off the ribbon, the cut ribbon tail is rolled out by the tensioning mechanism 6, after the sensor 402 of the period control mechanism 4 detects that the period gear 401 rotates by N circles or 1/N circles (N is a positive integer, N is generally 1 or 2), the electric control board 10 controls the motor and the reduction gearbox 9 and the pneumatic element to stop moving or reset to complete a bundling period, and the electric control board 10 can be externally arranged.

Example 2 (with respect to the frame structure):

As shown in fig. 4, 5 and 11: the machine frame 2 is split into a machine frame body 210, a machine frame cover plate 220 and a mounting plate 230 and is fixedly connected through screws, the cycle control mechanism 4, the motor, the reduction gearbox 9 and the cutter driving mechanism 8 are mounted on the mounting plate 230, the tensioning mechanism 6 and the cutter 7 are mounted in a combination body of the machine frame body 210 and the machine frame cover plate 220, and the ribbon guide rail 3 is mounted on the machine frame 2. If electric discharge machining is used, the frame body 210 and the frame cover 220 may be combined into one part; the mounting plate 230 may also be integral with the frame if processing difficulties are not a concern.

As shown in fig. 11: the machine frame body 210 is provided with a pit 211 for positioning the head of the binding belt, a rectangular small hole 212 is arranged in the pit 211 for allowing the tail of the binding belt to pass through and enter the tensioning mechanism 6, the outer edge of the machine frame body 210 combined with the machine frame cover plate 220 is provided with a U-shaped groove 213 for guiding the binding belt, the machine frame cover plate 220 is provided with a window part 2201, the window part 2201 is disassembled to clean scraps stuck on the tensioning mechanism 6, and one end of the tensioning mechanism 6 is arranged on the window part 2201; if the frame cover 220 does not have a window feature 2201, then a large number of parts need to be removed to clear debris adhering to the tensioning mechanism 6; as shown in fig. 10 and 11, the window 2201 is slightly different due to the structural design and layout differences.

As shown in fig. 44, 45, 46: the frame body 210 and the guide rail body 31 are the same part, the length direction (i.e. the movement track of the binding tape) of the guide channel of the binding tape guide rail 3 is perpendicular to the central plane of the working head 1 of the automatic binding tape tool, the binding tape guide rail 3 conveys the binding tape to the central plane of the working head 1 of the automatic binding tape tool in a transverse direction, in order to make the binding tape enter the U-shaped groove of the guide jaw mechanism 5, one side surface of the U-shaped groove on the frame body 210 is less, alternatively, a correction block 230 is arranged on the frame 2, the correction block 230 is lower than the bottom surface of the U-shaped groove on the frame body 210 before the binding tape 06 enters the central plane K-K of the working head 1 of the automatic binding tape tool, and after the binding tape 06 enters the central plane K-K of the working head 1 of the automatic binding tape tool, the correction block 230 corrects the binding tape according to the arrow direction shown in 2301 or 2302 in fig. 45.

Examples

(Regarding the functional structure of the guide claw)

As shown in fig. 2 to 7: the most basic design of the guide jaw mechanism 5 is that it comprises at least 2 guide jaws, namely a first guide jaw 51 and a second guide jaw 52 (the first guide jaw 51, the U-shaped groove of which is in contact with the tie first, and the second guide jaw 52, the U-shaped groove of which is in contact with the tie when the tie is transferred from the tie guide rail 3 and fed into the guide jaw mechanism 5), as shown in fig. 4, 5, 6, 8: the first guide claw 51 and the second guide claw 52 are provided with U-shaped grooves, as shown in fig. 5: when the second guiding claw 52 is closed with the first guiding claw 51, the U-shaped groove of the second guiding claw 52 and the U-shaped groove of the stand 2 are connected end to form a closed U-shaped groove guiding ring, at this time, the sum of the circumferences of the U-shaped groove of the first guiding claw 51, the second guiding claw 52 and the bottom surface of the U-shaped groove of the stand 2 is equal to or greater than the length of the strapped band, and the band is bent into a ring in the guiding ring; as shown in fig. 6: the swinging of the first guide jaw 51 about the first guide jaw rotational central axis 511 shortens the effective circumference of the guide ring, forcing the strap tail into the aperture of the strap head and into the tightening mechanism 6 as the strap head is restrained; or as shown in fig. 36: after the guide jaw mechanism 5 is closed, the U-shaped groove of the guide jaw mechanism 5 and the U-shaped groove of the frame 2 are connected but not closed, and a closed guide ring is formed by means of the combination of the surfaces of the strapped parts (motor stator 05), at this time, the sum of the groove bottom of the U-shaped groove of the guide jaw mechanism 5 (including the first swing guide jaw 5101, the first static guide jaw 5102 and the second guide jaw 52) and the length of the groove bottom of the U-shaped groove of the frame 2 plus one section of the strapped parts (motor stator 05) is equal to or greater than the length of the strapped band, and the design that the U-shaped groove is connected and not closed is equivalent to the aforementioned "closed U-shaped groove guide ring". The working process comprises the following steps: when the ribbon is fed into the guide jaw mechanism 5, the ribbon firstly contacts the first guide jaw 51 and is guided in the U-shaped groove of the first guide jaw 51, and then enters the U-shaped groove of the second guide jaw 52 for guiding.

Further, as shown in fig. 25 to 29: the U-shaped grooves of the guide claw mechanism 5 are all formed on the second guide claw 52, namely, the first guide claw 51 does not have the U-shaped groove, the first guide claw 51 only provides one surface for guiding the movement of the binding belt, the second guide claw 52 provides two side surfaces as the bottom of the U-shaped groove, and the first guide claw 51 and the second guide claw 52 are combined together to form the U-shaped groove of the guide claw mechanism 5; as shown in fig. 28: the circumference of the closed U-shaped groove guide ring is larger than or equal to the length of the ribbon.

Further, as shown in fig. 5 and 6: of the at least 2 guide pawls of the guide pawl mechanism 5, the first guide pawl 51 has two basic functions: firstly, the strapping tape is guided, and secondly, the circumference of the closed U-shaped groove guide ring is shortened after the first guide claw 51 is hooked so as to penetrate the tail part of the strapping tape into the head part of the strapping tape and enter the tensioning mechanism 6; as shown in fig. 5, 6, 24, 28, and 29: the second guide jaw 52 also has two basic functions: firstly, the ribbon is guided, and secondly, one end of the second guiding claw 52 and the concave pit 211 in the frame 2 are used together to limit 6 degrees of freedom of the ribbon head; as shown in fig. 24, 28, and 29: one end of the second guiding claw 52 is not in direct contact with the tie head, but the end of the second guiding claw 52 presses the strapped one-hole workpiece 03 or two-hole workpiece 04, and the tie head is limited in 6 degrees of freedom by the strapped one-hole workpiece 03 or two-hole workpiece 04 acting together with the concave pit 211 in the frame 2; in the application of the strapped work piece 03 with one hole or work piece 04 with two holes, the end of the second guide jaw 52 acts indirectly with the recess 211 in the frame 2 to limit the 6 degrees of freedom of the tie head.

Further, as shown in fig. 2, 3, 4, 5, 6, 7, 10, 12 to 15: the guide jaw mechanism 5 includes 2 guide jaws (i.e., a first guide jaw 51 and a second guide jaw 52); in fig. 16, the second guide claw 52) is split into a second swing guide claw 5203 and a second slide guide claw 5204 for convenience of the layout of parts; as shown in fig. 30 to 34: splitting the first guide claw 51 into: a first hooking guide pawl 5101 and a first stationary guide pawl 5102; splitting the second guide jaw 52 into: a second moving guide claw 5201 and a second stationary guide claw 5202; the purpose of the detachment is to avoid motion interference, the first hooked guide pawl 5101 and the first stationary guide pawl 5102 are combined to be identical to the first guide pawl 51, and the first hooked guide pawl 5101 performs the two basic functions of the first guide pawl 51 (first, guiding the tie, second, making the perimeter of the "closed guide ring" shortened after hooking), and likewise, the second motion guide pawl 5201 and the second stationary guide pawl 5202 are combined to be identical to the second guide pawl 52, and the second motion guide pawl 5201 performs the two basic functions of the second guide pawl 52 (first, guiding, second, one end of the second motion guide pawl 5201 acts with the concave pit 211 in the frame 2 to limit 6 degrees of freedom of the tie head); as shown in fig. 35, 36, and 37: only the first guide claw 51 is split into: a first hooking guide pawl 5101 and a first stationary guide pawl 5102; the split guide pawl structure shown in fig. 30-37 is designed mainly for binding where the binding belt needs to pass through a narrow space, such as a motor stator, a pipe joint and other workpieces.

As shown in fig. 52 and 53: when the band guide rail 3 is perpendicular to the center plane of the working head of the automatic band tool, that is, when the band is transversely fed into the guide jaw mechanism 5, the tail of the band may be skewed, and inclined planes 5100 are made on two sides of the U-shaped guide groove of the first guide jaw 51, so that the band body with skew can conveniently enter the U-shaped guide groove of the first guide jaw 51.

(Regarding the installation of the guide claw)

As shown in fig. 2 to 7: the guide jaw mechanism 5 is arranged next to the frame 2 and mounted on the frame 2.

As shown in fig. 14 to 20: the second guide claw 52 of the guide claw mechanism 5 is mounted on the housing 1 by a second guide claw cylinder 542.

As shown in fig. 21 to 24: the first guide claw 51 is mounted on the frame 2, the second guide claw 52 is mounted on the bracket 02 through a second guide claw cylinder 542, the second guide claw cylinder 542 pulls the second guide claw 52 to slide on the guide rail 541 and slide to the upper side in the drawing, a workpiece 03 with one hole is placed in the workpiece, the second guide claw cylinder 542 pulls the second guide claw 52 to slide on the guide rail 541 and slide to the lower side in the drawing and close with the first guide claw 51, and after the bundling of the workpiece 03 with one hole is completed, the second guide claw 52 is pulled to the upper side in the drawing so as to take out the workpiece 03.

As shown in fig. 25 to 29: the first guide claw 51 and the first guide claw cylinder 531 are both mounted on the second guide claw 52, the second guide claw 52 is mounted on the bracket 02 through the second guide claw cylinder 542, the second guide claw cylinder 542 pulls the second guide claw 52 to slide on the guide rail 541, the second guide claw 52 is placed in the workpiece 04 with two holes when at the upper end position in the drawing, the second guide claw cylinder 542 pulls the second guide claw 52 and slides along with the first guide claw 51 to the lower side in the drawing to press the workpiece 04 with two holes, the workpiece 04 positions and locks the band head in the pit 211 of the frame 2, the band body passes through the two holes of the workpiece 04 and winds in the U-shaped groove guide ring of the guide claw mechanism 5 and the U-shaped groove guide ring of the frame 2, the first guide claw cylinder 531 drives the first guide claw 51 to act to force the tail of the band to penetrate into the hole of the band head and enter the tensioning mechanism 6, and after the second guide claw 542 pulls the second guide claw 52 and slides along with the second guide claw 52 to the two holes in the drawing, and the workpiece 04 is pulled along with the two guide claws 52 to the two guide holes in the drawing after the band body is pulled and the workpiece 04 is pulled along with the two guide claws 51.

As shown in fig. 44 to 52: the invention is applied to a desktop automatic strapping machine, the first guide claw 51 is arranged on the machine frame 2 and can rotate around a first guide claw central pin 511, the second guide claw 52 is arranged on the machine frame 2 and can swing around a second guide claw central pin 521 at a small angle, the first guide claw cylinder 531 is hinged with the first guide claw 51 through a first guide claw driving pin 512, the first guide claw cylinder 531 drives the first guide claw 51 to rotate around the first guide claw central pin 511 and close to the second guide claw 52, the first guide claw 51 continues to rotate to enable the tail part of the strapping tape to pass through the head part of the strapping tape and be inserted into a tensioning mechanism 6, a cutter driving mechanism 8 drives a cutter 7 to cut the strapping tape after the strapping tape is tensioned, and an automatic strapping cycle is completed when a sensor 402 detects that a periodical gear 401 rotates to a fixed position.

(Regarding the driving method of the guide claw)

As shown in fig. 3, 6 and 7: the first guide claw 51 is driven by a motor driving cam 81: the cam 81 drives the driven roller 517 to drive the connecting rod 515 to rotate around the connecting rod center pin 516, the rotation of the connecting rod 515 drives the shift fork lever 513 to rotate around the shift fork lever center pin 514, the shift fork lever 513 drives the first guide jaw driving pin 512, the first guide jaw driving pin 512 is fixed at the end of the first guide jaw 51, and the power acting on the first guide jaw driving pin 512 drives the first guide jaw 51 to swing around the first guide jaw center pin 511. The second guide jaw 52 is driven by a trigger 524 driving a trigger link 522, and the second guide jaw 52 rotates about a second guide jaw center pin 521.

As shown in fig. 12 and 13: the first guide claw 51 is driven by a motor-driven cam 81, and the second guide claw 52 is driven by a cam 552.

As shown in fig. 14, 15, 16, 27, 28, and 29: the first guide claw 51 is driven by a first guide claw cylinder 531, and the second guide claw 52 is driven by a second guide claw cylinder 542;

As shown in fig. 17, 18, 19, 20, 21, 22, 23, 24, and 42: the first guide claw 51 is driven by a motor-driven cam 81, and the second guide claw 52 is driven by a second guide claw cylinder 542; in fig. 42, a second guide jaw cylinder 542 is built in the housing 1.

As shown in fig. 43: the working head 01 of the automatic strapping tool is arranged on a bracket 02, a trigger triggering cylinder 07 is also arranged on the bracket 02, and the trigger triggering cylinder 07 acts to drive a trigger pressing plate 08 to press down a trigger 524 to drive a second guide claw 52.

As shown in fig. 51 and 52: the second guide jaw 52 can swing around the second guide jaw center pin 521 at a small angle, the first guide jaw cylinder 531 is hinged to the first guide jaw 51 through the first guide jaw driving pin 512, and the first guide jaw cylinder 531 drives the first guide jaw 51 to rotate around the first guide jaw center pin 511 and close to the second guide jaw 52.

Examples

(About the ribbon guide rail)

As shown in fig. 3, 4, 5, 6, 7 and 9: the ribbon guide rail 3 includes a guide rail body 31, a guide rail cover plate 32, the guide rail body 31 has a U-shaped groove, the U-shaped groove of the guide rail body 31 and the guide rail cover plate 32 form 4 guide surfaces of a ribbon guide channel, the cross section of the guide channel enclosed by the 4 guide surfaces is square or trapezoid (the square is rectangle or square), the 4 guide surfaces are respectively matched with 4 surfaces parallel to the length direction of the ribbon head profile or edges on the 4 surfaces of the ribbon head, and are ribbon motion guide, and the length direction of the guide channel of the ribbon guide rail is ribbon motion track, namely: the movement direction of the ribbon is the length direction of the ribbon. The arrangement of the tie guide rail: the movement track of the ribbon is positioned in the central plane of the working head of the automatic ribbon-binding tool, when the length direction of the guide channel of the ribbon-binding guide rail (namely the movement track of the ribbon) is positioned in the central plane of the working head 01 of the automatic ribbon-binding tool, the ribbon-binding head and the ribbon-binding body are both limited to move in the guide channel of the ribbon-binding guide rail 3, namely the ribbon-binding guide rail 3 conveys the ribbon to the U-shaped groove of the frame 2 in a longitudinal direction; the length direction of the guide channel of the tie guide rail 3 (i.e. the tie movement track) is either curved.

As shown in fig. 44, 46, 49, 50: the ribbon guide rail 3 comprises a guide rail body 31 and a guide rail cover plate 32, wherein the guide rail body 31 is provided with a U-shaped groove, the U-shaped groove of the guide rail body 31 and the guide rail cover plate 32 form 4 guide surfaces of a ribbon guide channel, the U-shaped groove of the guide rail body 31 and the guide rail cover plate 32 form 4 guide surfaces of the ribbon guide channel and are perpendicular to the length direction of the ribbon, and only the ribbon head is limited on the U-shaped groove of the guide rail body 31 and the guide rail cover plate 32 form 4 guide surfaces of the ribbon guide channel; the tie guide 3 is such that the tie movement track (guide channel of the tie guide 3) is perpendicular to the center plane of the working head 01 of the one automatic tie tool, in fig. 46, the K-K section is the center plane of the working head 01 of the one automatic tie tool, the tie guide 3 conveys the tie 06 from left to right, the length direction (i.e., tie movement track) of the guide channel of the tie guide 3 is perpendicular to the center plane of the working head 1 of the one automatic tie tool, and the tie guide 3 conveys the tie "transversely" to the center plane of the working head 1 of the one automatic tie tool; the length direction of the guide channel of the tie guide rail 3 (i.e. the tie movement track) is either straight or curved.

As shown in fig. 58: the guide rail body 31 is a roller with a plurality of U-shaped grooves uniformly distributed along the circumference, and the cambered surface of the guide rail cover plate 32 and each U-shaped groove of the guide rail body 31 form 4 guide surfaces of the band guide channel.

Examples

(Regarding the tensioning mechanism)

As shown in fig. 3 to 7, 19, 20, 24 to 29, 32 to 34, 50 to 52, 54 to 57: the tensioning mechanism 6 includes: the driving center tightening wheel 611, the driving center tightening shaft 612, the auxiliary tightening wheel 621, the auxiliary tightening shaft 622 and the transmission gear 613, wherein the driving center tightening shaft 612 can be combined with the driving center tightening wheel 611 into one part, and the auxiliary tightening shaft 622 can be combined with the auxiliary tightening wheel 621 into one part; the number of the driving center tightening wheels 611 is at least 1, at least 1 transmission gear 613 is coaxially and fixedly connected with the driving center tightening wheels 611, and the number of the auxiliary tightening wheels 621 is 1,2 or more.

As shown in fig. 54, 56 and 57, the number of the active center tightening wheels 611 is 1, and the number of the auxiliary tightening wheels 621 is only 1.

As shown in fig. 3 to 5, 19 and 20: the number of the driving center tightening wheels 611 is 1,2 auxiliary tightening wheels 621 are arranged around the circumference of the driving center tightening wheels 611, the 2 auxiliary tightening wheels 621 enable the binding belt to form a certain wrap angle around the circumference of the driving center tightening wheels 611, the 2 auxiliary tightening wheels 621 are arranged on a supporting plate 623 through auxiliary tightening shafts 622, the supporting plate 623 can rotate around supporting plate center pins 624, the supporting plate center pins 624 are fixedly arranged on the machine frame 2, the elastic force of the tightening force adjusting springs 625 can be adjusted through rotating tightening force adjusting screws 626, the pressure of the auxiliary tightening wheels 621 on the binding belt can be adjusted, and the center distance between the 2 auxiliary tightening wheels 621 and the driving center tightening wheels 611 is floating.

As shown in fig. 24, 24 to 29, 32 to 34, 50 to 52, and 55: the number of the driving center tightening wheels 611 is 1,2 auxiliary tightening wheels 621 are arranged around the circumference of the driving center tightening wheels 611, in fig. 55, the 2 auxiliary tightening wheels 621 are made into a stepped structure so as to increase the contact area with the binding belt, the 2 auxiliary tightening wheels 621 enable the binding belt to wrap around the circumference of the driving center tightening wheels 611 to form a certain wrap angle, the driving center tightening wheels 611 and the 2 auxiliary tightening wheels 621 are installed on the frame 2 through bearings, and the 2 auxiliary tightening wheels 621 and the driving center tightening wheels 611 are in a fixed center distance.

As shown in fig. 55, 56, and 57: each auxiliary tightening wheel 621 is also coaxially and fixedly connected with the transmission gear 613, that is, each auxiliary tightening wheel 621 has power transmitted in.

As shown in fig. 4 and 5: ratchet teeth or patterns are formed at least on the periphery of the active center tension wheel 611 to increase the friction of the active center tension wheel 611 against the tie.

Examples

(With respect to the cycle control mechanism)

As shown in fig. 3, 14, 15, and 16: the cycle control mechanism 4 comprises a cycle gear 401 and a sensor 402, wherein the power of the cycle gear 401 is transmitted by the motor and the reduction gearbox 9, the sensor 402 is arranged close to the cycle gear 401, one or more magnets or protrusions or holes 403 are formed in the cycle gear 401 along the circumferential end face of the cycle gear 401, and when the sensor 402 detects the magnets or the protrusions or the holes 403, the electric control board 10 controls the motor and the reduction gearbox 9 to stop acting and controls the pneumatic element to reset, so that the bundling cycle of a bundling belt is completed; typically, one revolution of the cycle gear 401 completes one strapping cycle; in particular, the sensor 402 may detect the magnet or protrusion or aperture 403 two or more times to complete a strapping cycle of the strap through a program change.

Examples

(Regarding the cutter drive mechanism)

As shown in fig. 3, 14, 15, and 16: the periodic gear 401 of the periodic control mechanism 4 is directly meshed with the transmission gear 613 of the tensioning mechanism, and when the periodic gear 401 rotates by a fixed angle to drive the transmission gear 613 to rotate by a fixed number of turns, namely the driving center tensioning wheel 611 rotates by a fixed circumference, the cam 81 coaxially and fixedly connected with the periodic gear 401 drives the cutter 7 to cut off the binding belt, so that 'fixed length' cutting is realized.

As shown in fig. 6, 7, 19, and 20: the cam 81 is mounted coaxially and fixedly to the cycle gear 401, the distal point of the cam 81 acting on the protrusion on the lever 811 to rotate the lever 811 about the lever centre pin 812 before the sensor 402 detects the magnet or protrusion or hole 403, i.e. before the strapping cycle of a strap is completed, the rotation of the lever 811 driving the cutter 7 to cut the strap; as shown in fig. 6, 7, 19 and 20, the cam 81 is rotated counterclockwise, and the cam 81 is the cutter driving mechanism 8 because the lever 811 is added between the cam 81 and the cutter 7 as a transition element due to the rotation direction of the cam 81 and the layout of the parts, if the cam 81 is rotated clockwise instead, the cam 81 can directly drive the cutter 7.

As shown in fig. 17: before the bundling cycle of a bundling strap is completed, a signal is obtained from the periodical gear 401 or a cam coaxially and fixedly connected with the periodical gear 401 and is sent to the electric control board 10, and the electric control board 10 controls the cylinder 821 to drive the cutter driving pin 822 so that the cutter 7 cuts off the bundling strap; as an alternative to the air cylinder 821, either an added motor-driven gear is used to drive the rack-driven cutter 7 or an added motor is used to drive the crank linkage mechanism to drive the cutter 7 to cut the tie.

As shown in fig. 32, 34, 56, and 57: the "one three-terminal input output mechanism" 80 is additionally installed on the periodic gear 401 and the transmission gear 613, and the one three-terminal input output mechanism 80 includes: the device comprises an adjusting screw 801, a vernier 802, an adjusting spring 803, a planetary gear 804, a planetary gear base 805, a sun gear 806 and an inner gear 807, wherein the periodic gear 401 is meshed with the sun gear 806, an outer gear ring of the inner gear 807 is meshed with a transmission gear 613 of a tensioning mechanism 6, the adjusting screw 801 is rotated to control the pre-compression force of the adjusting spring 803 on the planetary gear base 805, when the moment generated by the tensioning force of the tensioning mechanism 6 on a binding belt is equal to or larger than the moment generated by the pre-compression force of the adjusting spring 803 on the planetary gear base 805, the planetary gear base 805 is rotated, and a poking pin 808 fixed on the planetary gear base 805 drives a cutter 7 to cut off the binding belt, so that 'fixed moment' cutting is realized.

Examples

(Application to a working head of an automatic strapping tool)

As shown in fig. 1 to 7, 10, 12 to 20: the shell 1 of the working head 01 of the automatic strapping tool is also provided with a data wire 11 and a feeding pipe 12, and the data wire 11 and the feeding pipe 12 are connected and combined with a bulk strapping feeding device or a connected strapping feeding device to be used as a handheld tool.

As shown in fig. 21 to 37: the working head 01 of the automatic strapping tool is fixed on the bracket 02, the installation mode of the guide claw mechanism 5 is changed or/and the guide claw mechanism 5 is split according to the embodiment 3, the data wire 11 and the feeding pipe 12 are connected and combined with the bulk strapping feeding device or the integrated strapping feeding device for use, so that the strapping operation of penetrating through 1 hole or 2 holes of the strapped workpieces or the automatic strapping operation of penetrating through a small space of the strapped workpieces is realized.

As shown in fig. 38 to 43: the working head 01 of the automatic strapping tool is arranged on the bracket 02, and the data wire 11 and the feeding pipe 12 are connected and combined with a bulk strapping feeding device (patent number: ZL 2017207985874) or a connected strapping feeding device (patent number: ZL 201720798762X) to be used as a fixed strapping tool.

Examples

(Application to a working head of an automatic strapping tool)

As shown in fig. 44 to 53: the working head 01 of the automatic binding tool is arranged on a tabletop and used as a tabletop type automatic binding machine, as shown in fig. 46 to 49: the head of the ribbon 06 is pushed from left to right by the ratchet wheel feeding device 30 in the direction shown in fig. 46, the head of the ribbon 06 is arranged in parallel in the ribbon guide rail 3 and moves into the U-shaped groove of the guide claw mechanism 5, and the ratchet wheel feeding device 30 comprises: the ratchet 301, the clutch shaft 302, the spring 303, the friction plate 304, the adjusting nut 305, the motor and the reduction gearbox 309 are coaxially arranged, the ratchet 301, the clutch shaft 302, the spring 303, the friction plate 304, the adjusting nut 305 and the motor and the reduction gearbox 309 synchronously rotate with the output shaft of the motor and the output shaft of the reduction gearbox 309, the ratchet 301 is sleeved on the clutch shaft 302, the friction force of the friction plate 304 drives the ratchet 301 to rotate, and the head of the ratchet drive ribbon 06 of the ratchet 301 is pushed from left to right in the direction shown in fig. 46.

Example 10:

(use of continuously fed rollers as a tie guide in a working head of an automatic tie tool)

As shown in fig. 58: the ribbon guide 3 comprises a guide body 31 and a guide cover plate 32, the guide body 31 is a roller with a plurality of U-shaped grooves uniformly distributed along the circumference, the cross section of the U-shaped groove of the guide body 31 is square or trapezoid, the matching surface of the guide cover plate 32 and the guide body 31 is arc-shaped, and in a ribbon bundling period, the guide body 31, namely the roller, rotates by a stepping angle between grooves, and the structure is designed to integrate a feeding device on a working head 01 of the automatic ribbon bundling tool.

The "square" or "trapezoid" of the U-shaped groove described in the above embodiments, the "square" being square or rectangular, and slight variations in shape being functionally indistinct; the cylinders mentioned in the embodiments can be replaced by motor-driven cams, or link mechanisms, or gear-rack mechanisms; on the contrary, the cam or the link mechanism mentioned in the embodiment can be replaced by a cylinder, and the main functions of the invention are not changed due to different structural arrangements.

Since modifications and changes may be made in the above embodiments by persons skilled in the art in light of the above disclosure, it is intended that the present invention not be limited to the exact embodiment illustrated and described, but that certain modifications and changes may be practiced within the scope of the appended claims. In addition, although specific terms are used in the present specification, these terms are for convenience of description only and do not limit the present invention in any way.

Claims

1. The utility model provides a take-up mechanism of automatic ribbon instrument that has center distance that floats which characterized in that: comprising the following steps: a driving center tension wheel, an auxiliary tension wheel and a transmission gear; the tightening force adjusting screw and the tightening force adjusting spring are arranged to pull or press the at least 1 auxiliary tightening wheel to or towards the driving center tightening wheel, and the elastic force of the tightening force adjusting spring can be adjusted by rotating the tightening force adjusting screw, so that the pressure of the auxiliary tightening wheel to the binding belt can be adjusted; the center distance between the auxiliary tightening wheel and the driving center tightening wheel is floating; at least 1 transmission gear is coaxially and fixedly connected with the driving center tightening wheel to provide power for tightening the tie by the tightening mechanism, and the auxiliary tightening wheels are arranged along the circumference of the driving center tightening wheel; the tensioning mechanism is arranged on a frame of the automatic strapping tool, and the frame is either an integral part or split into 2 parts or a plurality of parts; the machine frame is provided with a U-shaped groove for guiding the binding belt, the machine frame is also provided with a pit for positioning the head of the binding belt, and the pit is rectangular or square sinking; rectangular small holes are formed in the pits in the machine frame, the small holes are located in the middle of the pits, and the tail of the binding belt penetrates through the small holes to enter the tensioning mechanism.

2. The tension mechanism with floating center distance for an automatic strapping tool of claim 1 wherein: and each auxiliary tightening wheel is also coaxially and fixedly connected with the transmission gear, so that power is transmitted to each auxiliary tightening wheel.

3. The tension mechanism with floating center distance for an automatic strapping tool of claim 1 wherein: the window part is arranged on the frame or the part detached from the frame, the window part is detached, the part of the tensioning mechanism can be seen, the fragments stuck on the part of the tensioning mechanism can be cleaned conveniently, and the window part is also one of the mounting ends of the tensioning mechanism.

4. The tension mechanism with floating center distance for an automatic strapping tool of claim 1 wherein: the frame is either an integral part; or the frame is split into a frame body and a frame cover plate.

5. A floating center-to-center tension mechanism for an automatic strapping tool as in claim 1 or 3 wherein: the machine frame comprises a machine frame body and a machine frame cover plate, wherein the machine frame body is split by the machine frame, a U-shaped groove and a pit are formed in the machine frame body and the machine frame cover plate, the pit is rectangular or square and sunk, and a rectangular small hole is formed in the middle of the pit.

6. The tension mechanism with floating center distance for an automatic strapping tool of claim 1 wherein: ratchet teeth or patterns are made at least at the periphery of the active center tightening wheel.

7. The tension mechanism with floating center distance for an automatic strapping tool of claim 1 wherein: the automatic strapping tool is characterized by further comprising a guide claw mechanism, wherein the guide claw mechanism is arranged close to the frame and comprises at least 2 guide claws, at least 1 of the at least 2 guide claws or each guide claw is internally provided with a U-shaped guide groove, and the U-shaped grooves of the guide claw mechanism and the symmetry center surface of the U-shaped grooves in the frame are both positioned in the center surface of the working head of the automatic strapping tool.

8. The tension mechanism with floating center distance for an automatic strapping tool of claim 7 wherein: when the guide claw mechanism is closed with the machine frame, the U-shaped grooves of at least 2 guide claws of the guide claw mechanism or the U-shaped grooves formed by combining the at least 2 guide claws are connected end to end with the U-shaped grooves of the machine frame to form a closed U-shaped groove guide ring; or when the guide claw mechanism is closed with the machine frame, the U-shaped grooves of at least 2 guide claws of the guide claw mechanism or the U-shaped grooves formed by combining the at least 2 guide claws are connected with the U-shaped grooves of the machine frame and then connected with the surfaces of the bundled parts end to form a closed guide ring; the length of the guide ring is greater than or equal to the length of the trapped ribbon, calculated on the bottom of the U-shaped groove.

9. The tension mechanism with floating center distance for an automatic strapping tool of claim 7 wherein: the recess acting with an end face of one of the guide jaws of the guide jaw mechanism to limit 6 degrees of freedom of the tie head; or the end face of the guide claw is not in direct contact with the tie head, but the tie head position is limited by the strapped object between the end face of the guide claw and the tie head, the end face of one of the guide claw mechanisms acts on the strapped object, and the end face of one of the guide claw mechanisms and the pit limit 6 degrees of freedom of the tie head in an indirect manner.

10. The tension mechanism with floating center distance for an automatic strapping tool of claim 7 wherein: the first guide jaw of the guide jaw mechanism is operable to enable the tail portion of the strap to pass into the aperture of the head portion of the strap and into the tightening mechanism.