Steel bar bundling device

Abstract

The present invention discloses a steel bar bundling device, comprising: a wire guiding plate which has a circular inner cavity and a notch, and a wire guiding groove is formed on the cavity wall of the circular inner cavity; a wire guiding hole is formed on the side part of the wire guiding plate; a moving cutter, a wire passing groove is formed upward on the bottom surface of the automatic cutter, the wire passing groove radially penetrates through the moving cutter, and a rectangular cavity axially penetrating is formed in the moving cutter; a clamp which is arranged in the rectangular cavity of the moving cutter; a wire feeding mechanism which is used for driving a wire rope to enable the wire rope to pass through the wire guiding hole, pass through the wire passing groove of the moving cutter, and pass through the rear jaw of the clamp when passing through the wire passing groove, and feed along the wire guiding groove for one circle to bypass the steel bar after passing through the rear jaw, and after bypassing the steel bar, the distal end of the wire rope passes through the front jaw of the clamp; a tightening driving mechanism which is configured to drive the clamp to clamp the wire rope located between the front jaw and the rear jaw, and drive the moving cutter and the clamp to rotate synchronously after the clamp clamps the wire rope to cut off the proximal end of the wire rope and twist and tighten the wire rope.

Description

Technical Field

[0001] The present invention relates to a steel bar bundling device. Background Art

[0002] In the prior art, the bundling work of two intersecting steel bars is mainly completed by manual operation, with low work efficiency. Although some semi-automatic bundling machines have emerged in the prior art, however, these bundling machines usually can only achieve the screwing and tightening work of the wire rope. Before tightening, it is still necessary to manually wind the wire rope around the steel bars, and it is still necessary to manually cut the wire rope after winding around the steel bars. Summary of the Invention

[0003] In view of the above technical problems existing in the prior art, an embodiment of the present invention provides a steel bar bundling device.

[0004] To solve the above technical problems, the technical solution adopted in the embodiment of the present invention is as follows:

[0005] A steel bar bundling device, comprising:

[0006] A wire guiding plate, which has a circular inner cavity and a notch at the bottom of the circular inner cavity. Through the notch, the intersecting steel bars enter the circular inner cavity. A circumferentially extending wire guiding groove is formed on the inner cavity wall of the circular inner cavity; a laterally extending wire guiding hole is formed on the side of the wire guiding plate, and a receiving cavity is provided at the top of the wire guiding plate. The wire guiding hole penetrates through the wall of the receiving cavity;

[0007] A moving cutting knife, which is arranged in the receiving cavity. A wire passing groove is formed upward from the bottom surface of the moving cutting knife, and the wire passing groove radially penetrates through the moving cutting knife. A rectangular cavity axially penetrating through is formed in the moving cutting knife;

[0008] A clamp, which is arranged in the rectangular cavity of the moving cutting knife;

[0009] A wire feeding mechanism, which is arranged on one side of the wire guiding plate. The wire feeding mechanism is used to drive the wire rope so that the wire rope passes through the wire guiding hole, passes through the wire passing groove of the moving cutting knife, and passes through the rear jaw of the clamp when passing through the wire passing groove. After passing through the rear jaw, the wire rope feeds along the wire guiding groove for one circle and winds around the steel bars. After winding around the steel bars, the distal end of the wire rope passes through the front jaw of the clamp;

[0010] A tightening driving mechanism, which is configured to drive the clamp to clamp the wire rope located between the front jaw and the rear jaw, and after the clamp clamps the wire rope, drive the moving cutting knife and the clamp to rotate synchronously to cut the proximal end of the wire rope and screw and tighten the wire rope.

[0011] Preferably, a stepped groove is formed at the rear jaw of the clamp, so that when the clamp is in the clamping state, the clamp allows the wire rope in the rear jaw to unwind, while restricting the wire rope in the front jaw from unwinding.

[0012] Preferably, the tightening drive mechanism includes:

[0013] A drive sleeve, which is coaxially arranged above the moving cutter;

[0014] A shaft rod, which is located in the drive sleeve, and the lower end of the shaft rod extends out of the lower end of the drive sleeve, and the moving cutter is formed at the lower end of the shaft rod; the clamp has a first pivot shaft located below and connected to the moving cutter and a second pivot shaft located above and connected to the drive sleeve; an axially extending long hole is formed in the shaft rod, and the second pivot shaft passes through the long hole;

[0015] A nut sleeve, which is installed at the upper end of the drive sleeve;

[0016] A lead screw, which passes through the nut sleeve and can form a screw drive with the nut sleeve;

[0017] A servo motor, which is arranged above the lead screw and is used to drive the lead screw to rotate;

[0018] A locking platform, which is arranged at the upper end of the lead screw to stop the drive sleeve;

[0019] A limiting mechanism, which is at least configured to limit the rotation of the drive sleeve within an initial axial displacement and release the restriction on the drive sleeve after passing through the initial axial displacement; wherein:

[0020] The servo motor drives the lead screw to rotate. When the limiting mechanism restricts the rotation of the drive sleeve, the lead screw drives the drive sleeve to move axially upward through cooperation with the nut sleeve to drive the second pivot shaft to move upward, so that the jaws of the clamp close to clamp the wire rope;

[0021] After the clamp clamps the wire rope, the drive sleeve continues to move upward so that the limiting mechanism releases the restriction on the drive sleeve;

[0022] After the limiting mechanism releases the restriction on the drive sleeve, the wire rope generates a torsional impedance to the moving cutter to restrict the rotation of the drive sleeve, so that the drive sleeve moves upward and locks with the locking platform;

[0023] After locking with the locking platform, the servo motor drives the drive sleeve to rotate through the locking platform to drive the moving cutter to rotate to cut off the proximal end of the wire rope and rotate and tighten the wire rope.

[0024] Preferably, the tightening drive mechanism further includes a force transmission rod and a first spring;

[0025] The upper end of the force transmission rod is fixedly connected to the lower end of the lead screw. A limiting end is formed at the lower end of the force transmission rod. A compensation hole is formed at the upper end of the shaft rod, and the limiting end extends into and is restricted within the compensation hole.

[0026] The first spring is arranged on the force transmission rod to push down the shaft rod.

[0027] A first stop surface is formed on the outer periphery of the shaft rod, and a second stop surface facing the first stop surface is formed within the driving sleeve.

[0028] Preferably, the limiting mechanism includes a limiting component and a plurality of tooth components.

[0029] The plurality of tooth components are circumferentially arranged on the outer periphery of the driving sleeve.

[0030] The limiting component is arranged outside the driving sleeve. The limiting component includes a frame and two hinges symmetrically pivotally connected to the frame. A torsion spring is arranged between each hinge and the frame to cause the hinge to twist towards the driving sleeve. Wherein:

[0031] When the driving sleeve moves within the initial axial displacement, the limiting component restricts the tooth components between the two hinges to restrict the rotation of the driving sleeve. After the driving sleeve undergoes the initial axial displacement, the limiting component causes the tooth components to escape from one side of the hinge to release the restriction on the driving sleeve.

[0032] Preferably, the tooth component includes a long tooth and a plurality of short teeth. Two notches are formed on the inner sides of the two hinges, and the two notches are arranged in an upper and lower offset manner. Wherein:

[0033] The lower edges of the plurality of short teeth are flush, and the lower edge of the short tooth is not lower than the lower edge of the long tooth.

[0034] Preferably, the steel bar bundling device further includes a pressing device. The pressing device includes a pressing block, a positioning plate arranged above the pressing block, a contact switch arranged above the positioning plate, a guide rod with its lower end connected to the pressing block and its upper end passing through the positioning plate, and a second spring between the pressing block and the positioning plate.

[0035] Preferably, the steel bar bundling device further includes a tensioning mechanism. The tensioning mechanism includes:

[0036] A holding plate, on which a guiding groove with a broken line is formed;

[0037] A hook, on which a guiding post is arranged. The guiding post passes through the guiding groove and slides along the guiding groove.

[0038] A cylinder, which is connected to the tail of the hook and makes the hook twist towards the steel bar and then move upward to tighten the steel bar by lifting the hook.

[0039] Preferably, the wire feeding mechanism includes a mounting plate, a straightening roller arranged on the mounting plate, a pressing roller arranged on the mounting plate, a driving roller arranged opposite to the pressing roller, and a driving motor for driving the driving roller to rotate.

[0040] Preferably, the inlet end of the wire guiding groove where the wire rope enters is higher than the outlet end of the wire guiding groove where the distal end of the wire rope extends out.

[0041] Compared with the prior art, the beneficial effects of the steel bar bundling device provided by the embodiments of the present invention are as follows:

[0042] The steel bar bundling device provided by the present invention can realize automatic bundling of steel bars. Description of the Drawings

[0043] Figure 1 It is a perspective three-dimensional structure diagram of one perspective of the steel bar bundling device provided by the present invention.

[0044] Figure 2 It is a perspective three-dimensional structure diagram of another perspective of the steel bar bundling device provided by the present invention.

[0045] Figure 3 It is a perspective three-dimensional structure diagram of yet another perspective of the steel bar bundling device provided by the present invention.

[0046] Figure 4 It is a main cross-sectional view of the steel bar bundling device provided by the present invention.

[0047] Figure 5 It is a cross-sectional view of the left view of the steel bar bundling device provided by the present invention.

[0048] Figure 6 It is a perspective three-dimensional structure diagram of one perspective of the steel bar bundling device provided by the present invention, only showing the wire guiding plate and the tightening driving mechanism.

[0049] Figure 7 It is a perspective three-dimensional structure diagram of another perspective of the steel bar bundling device provided by the present invention, only showing the wire guiding plate and the tightening driving mechanism.

[0050] Figure 8 It is a structural diagram of the limiting component in the steel bar bundling device provided by the present invention.

[0051] Figure 9 It is a three-dimensional view of the mating relationship of one perspective between the limiting mechanism and the driving sleeve in the steel bar bundling device provided by the present invention.

[0052] Figure 10 This is a perspective view of the mating relationship between the limit mechanism and the drive sleeve in the steel bar bundling device provided by the present invention from another perspective.

[0053] In the figure:

[0054] 10 - wire guiding plate; 11 - wire guiding groove; 111 - outlet end; 12 - notch; 13 - wire guiding hole; 131 - inlet end; 14 - accommodating cavity; 20 - moving cutting knife; 21 - wire passing groove; 22 - rectangular cavity; 30 - clamp; 31 - front clamping jaw; 32 - rear clamping jaw; 33 - first pivot; 34 - second pivot; 40 - tightening driving mechanism; 41 - drive sleeve; 42 - shaft rod; 421 - compensation hole; 422 - long hole; 43 - force - transmitting rod; 431 - limit end; 44 - first spring; 45 - nut sleeve; 46 - lead screw; 47 - locking platform; 48 - servo motor; 50 - limit mechanism; 51 - limiting component; 511 - first hinge; 5111 - upper tongue; 5112 - lower notch; 512 - second hinge; 5121 - lower tongue; 5122 - upper notch; 513 - torsion spring; 52 - end teeth; 53 - long teeth; 60 - wire feeding mechanism; 61 - straightening roller; 62 - pressing roller; 63 - driving roller; 64 - driving motor; 70 - tensioning device; 71 - retaining plate; 711 - guiding groove; 72 - hook; 721 - guiding column; 73 - cylinder; 80 - pressing device; 81 - pressing block; 82 - positioning plate; 83 - guiding rod; 84 - second spring; 85 - contact switch; 90 - mounting bracket; 100 - wire rope; 200 - steel bar. Detailed implementation manners

[0055] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0056] As Figures 1 to 10 shown, the embodiment of the present invention discloses a steel bar bundling device, which is installed on the mounting bracket 90. A linear driving mechanism (not shown, such as an oil cylinder, cylinder 73, or electric cylinder) is connected to the mounting bracket 90 to move the steel bar 200 bundling device closer to two cross - intersecting steel bars 200, so as to prepare for bundling the two steel bars 200.

[0057] The bundling device includes: a wire guiding plate 10, a moving cutting knife 20, a clamp 30, a tightening driving mechanism 40, and a wire feeding mechanism 60.

[0058] The wire guiding plate 10 has a circular inner cavity and a notch 12 at the bottom of the circular inner cavity, as Figure 1 and Figure 2As shown, a linear drive mechanism is used to drive the bundling device towards two intersecting steel bars 200, so that the two steel bars 200 enter the circular inner cavity after passing through the notch 12. A wire guiding groove 11 extending circumferentially is formed on the inner side of the cavity wall of the circular inner cavity, that is, the guide wire plate 10, and a wire guiding hole 13 extending horizontally is formed on the side of the guide wire plate 10. A columnar accommodating cavity 14 is provided at the top of the guide wire plate 10, and the wire guiding hole 13 penetrates through the cavity wall of the accommodating cavity 14.

[0059] As Figure 3 shown, the wire feeding mechanism 60 is arranged on one side of the guide wire plate 10. The wire feeding mechanism 60 includes a mounting plate (not shown), straightening rollers 61 arranged on the mounting plate and arranged in a staggered manner, a pressing roller 62 arranged on the mounting plate, a driving roller 63 arranged on the mounting plate and arranged opposite to the pressing roller 62, and a driving motor 64 arranged on the mounting plate and used to drive the driving roller 63. The wire rope 100 for bundling steel wires sequentially passes through between the straightening rollers 61, the pressing roller 62 and the driving roller 63. After passing through the straightening rollers 61, the wire rope 100 is straightened. As Figure 4 shown, the forward or reverse rotation of the driving motor 64 is transmitted through the driving roller 63 and cooperates with the pressing roller 62 to make the wire rope 100 move towards the guide wire plate 10 to achieve feeding or make the wire rope 100 move away from the guide wire plate 10 to achieve wire withdrawal. When the wire rope 100 is fed by using the wire feeding mechanism 60, the end (far end) of the wire rope 100 passes through the wire guiding hole 13 of the guide wire plate 10. Under the action of the axial feeding force and the converging action of the circumferentially extending wire guiding groove 11, after passing through the accommodating cavity 14 of the guide wire plate 10, the wire rope 100 feeds along the wire guiding groove 11 for one circle and bypasses the steel bar 200. After the far end of the wire rope 100 feeds to the accommodating cavity 14, the wire feeding mechanism 60 stops driving the wire rope 100 to feed.

[0060] As Figure 6 and 7 in combination with Figure 4 and 5 shown, the moving cutting tool 20 is configured with a columnar outer shape structure matching the accommodating cavity 14, and the moving cutting tool 20 is arranged in the accommodating cavity 14. A wire passing groove 21 is formed upward on the bottom surface of the automatic cutting tool 20, and the wire passing groove 21 radially penetrates through the moving cutting tool 20. A rectangular cavity 22 axially penetrating is also formed in the moving cutting tool 20.

[0061] As Figures 5 to 7As shown in the figure, the clamp 30 is placed in the rectangular cavity 22 of the moving cutting blade 20. The jaws of the clamp 30 exactly correspond to the wire passing groove 21 of the cutting blade, such that the inlet end 131 of the wire guiding groove 11 (i.e., the inner end of the wire guiding hole 13) is higher than the outlet end 111 of the wire guiding groove 11. Thus, the proximal end of the wire rope 100 (i.e., the part connected to the wire rope 100 outside the wire guiding plate 10) is higher than the distal end of the wire rope 100. In this way, the proximal end of the wire rope 100 passes through the rear jaw 32 of the clamp 30, and the distal end of the wire rope 100 passes through the front jaw 31 of the clamp 30. After the jaws of the clamp 30 are closed, the jaws simultaneously clamp the wire rope 100 at both the proximal and distal ends, thereby preparing for screwing and tightening the wire rope 100. By providing a stepped groove at the rear jaw 32 of the clamp 30, when the clamp 30 is in the clamping state, the clamp 30 allows the wire rope 100 in the rear jaw 32 to unwind by the reverse rotation of the driving motor 64 of the wire feeding mechanism 60, and restricts the wire rope 100 in the front jaw 31 from unwinding, so that the wire rope 100 surrounding the steel bar 200 is tightened, thus preparing for tightening the wire rope 100.

[0062] The functions of the tightening driving mechanism 40 are as follows: firstly, enabling the clamp 30 to clamp the wire rope 100; secondly, driving the clamp 30 and the moving cutting blade 20 to rotate synchronously to cut the proximal end of the wire rope 100 and then screw and tighten the wire rope 100; thirdly, after the wire rope 100 is tightened, resetting the moving cutting blade 20 and reopening the jaws of the clamp 30, so that the subsequent wire rope 100 can pass through the jaws of the clamp 30 and the wire guiding groove 11 again through the wire feeding mechanism 60, thereby preparing for bundling the next group of steel bars 200.

[0063] As Figure 4 and Figure 5 shown in the figure, the tightening driving mechanism 40 includes: a driving sleeve 41, a shaft rod 42, a wire nut sleeve 45, a wire screw 46, a servo motor 48, a locking platform 47, and a limiting mechanism 50.

[0064] The driving sleeve 41 is arranged above the moving cutting blade 20 and is coaxial with the moving cutting blade 20. The shaft rod 42 is located in the driving sleeve 41. The moving cutting blade 20 is integrally formed at the lower end of the shaft rod 42. The clamp 30 has a first pivot 33 at the lower part and a second pivot 34 at the upper part. Both ends of the first pivot 33 are connected to the moving cutting blade 20. A long hole 422 is provided on the shaft rod 42 corresponding to the second pivot 34. Both ends of the second pivot 34 pass through the long hole 422 and are connected to the driving sleeve 41. In this way, when the driving sleeve 41 moves upward, the driving sleeve 41 synchronously drives the second pivot 34 to move upward to drive the jaws of the clamp 30 to close for clamping the wire rope 100.

[0065] The nut sleeve 45 is installed inside the upper port of the drive sleeve 41 and fixedly connected to the drive sleeve 41. The lead screw 46 passes through the nut sleeve 45 and forms a helical drive fit with the nut sleeve 45. Moreover, a force transmission rod 43 is fixedly connected to the lower end of the lead screw 46. A limiting end 431 is formed at the lower end of the force transmission rod 43. A compensation hole 421 is opened at the upper end of the shaft rod 42. The limiting end 431 extends into the compensation hole 421 and is restricted within the compensation hole 421. A first spring 44 is sleeved on the force transmission rod 43. The two ends of the first spring 44 respectively abut against the lead screw 46 and the shaft rod 42 to be used for pushing the shaft rod 42 downward. Thus, the moving cutter 20 has a certain axial floating displacement amount along with the shaft rod 42, that is, it can float upward by a certain distance by overcoming the elastic force of the first spring 44.

[0066] The servo motor is arranged above the lead screw 46. The servo motor 48 is used for driving the lead screw 46 to rotate. The locking table 47 is arranged above the drive sleeve 41 and is fixedly arranged. The locking table 47 is used for stopping the drive sleeve 41.

[0067] The limiting mechanism 50 is used for selectively restricting the rotation of the drive sleeve 41, so as to cooperate with other components of the tightening drive mechanism 40 to control the opening and closing of the clamp 30 and control the rotation and reset of the moving cutter 20.

[0068] After the wire rope 100 is fed around the intersecting steel bars 200 along the wire guiding groove 11 by using the wire feeding mechanism 60 for one circle, and the distal end and the proximal end of the wire rope 100 respectively pass through the rear jaw 32 and the front jaw 31 of the clamp 30, the servo motor 48 operates to drive the lead screw 46 to rotate forward. At this time, the limiting mechanism 50 restricts the rotation of the drive sleeve 41. The nut sleeve 45 enables the drive sleeve 41 to move upward through the helical fit with the lead screw 46. The second pivot 34 of the clamp 30 synchronously moves upward along with the drive sleeve 41, so that the jaws of the clamp 30 are closed to clamp the distal end and the proximal end of the wire rope 100. During this process, under the downward elastic force of the first spring 44, the moving cutter 20 does not move upward, and, under the restriction of the second pivot 34, the moving cutter 20 does not rotate either.

[0069] After the wire rope 100 is clamped by the clamp 30, the drive motor 64 of the wire feeding mechanism 60 reverses to make the proximal side of the wire rope 100 retract the wire, and further tighten the wire rope 100 wound around the steel bars 200.

[0070] After the wire rope 100 is tightened, the servo motor 48 continues to drive the lead screw 46 to rotate forward, so that the drive sleeve 41 continues to move upward until the drive sleeve 41 abuts against the locking table 47. During this process, on the one hand, the drive sleeve 41 gets rid of the restriction of the limiting mechanism 50 and is restricted from rotating by relying on the resistance of the wire rope 100 against the moving cutter 20. On the other hand, the drive sleeve 41 makes the shaft rod 42 overcome the elastic force of the first spring 44 through the second pivot 34, so that the shaft rod 42, the moving cutter 20 and the clamp 30 move upward synchronously to prevent the second pivot 34 from continuing to move relative to the first pivot 33 and over-clamping or even clamping off the wire rope 100.

[0071] After the drive sleeve 41 abuts against the locking table 47, the servo motor 48 continues to drive the lead screw 46 to rotate forward to lock the drive sleeve 41 and the locking table 47. Thus, the drive sleeve 41 is driven by the servo motor 48 and the drive sleeve 41 has a torque from the servo motor 48. This torque cuts the proximal wire rope 100 between the moving cutter 20 and the wall of the accommodating cavity 14. After the wire rope 100 is cut by the moving cutter 20, the servo motor 48 drives the drive sleeve 41 to rotate a preset number of turns, and the moving cutter 20 and the clamp 30 rotate with the drive sleeve 41 to twist and tighten the end of the wire rope 100.

[0072] After the wire rope 100 is tightened, the servo motor 48 drives the lead screw 46 to rotate reversely. At this time, the limiting mechanism 50 restricts the drive sleeve 41 from rotating reversely, so that the drive sleeve 41 moves downward, and then drives the clamp 30 to open again. Moreover, the limiting mechanism 50 also resets the moving cutter 20 to the torsional posture in which the wire passing groove 21 is aligned with the wire guiding hole 13 by limiting the torsional angle of the drive sleeve 41.

[0073] Next, the structure and working principle of the above-mentioned limiting mechanism 50 will be introduced.

[0074] As Figures 8 to 10 shown, the limiting mechanism 50 includes a plurality of tooth components and a limiting component 51. The plurality of tooth components are arranged circumferentially on the outer peripheral surface of the drive sleeve 41. One of the tooth components is a long tooth 53, and the rest of the tooth components are end teeth 52. The dimension of the long tooth 53 in the axial direction is greater than that of the end teeth 52 in the axial direction, and the lower edges of all the tooth components are flush. Thus, the upper edge of the long tooth 53 is higher than the upper edge of the end teeth 52.

[0075] The limiting component 51 is arranged outside the drive sleeve 41. The limiting component 51 includes a frame and two hinges, namely, a first hinge 511 and a second hinge 512. The two hinges are symmetrically pivotally connected to the frame. A torsion spring 513 is arranged between each hinge and the frame so that the hinge twists towards the drive sleeve 41 to approach or abut against the drive sleeve 41, and allows the tooth component to enter between the two hinges from between any one hinge and the drive sleeve 41.

[0076] An axially extending channel is defined between the two hinges to allow the tooth component to axially move therein. Moreover, an upper tongue 5111 for restricting the tooth component is formed at the upper part of the inner side of the first hinge 511, and a lower notch 5112 for releasing the restriction on the tooth component is formed at the lower part. A lower tongue 5121 for restricting the tooth component is formed at the lower part of the inner side of the second hinge 512, and an upper notch 5122 for releasing the limit on the tooth component is formed at the upper part.

[0077] When the servo motor 48 drives the lead screw 46 to rotate forward to clamp the wire rope 100 with the clamp 30, the long tooth 53 is located between the first hinge 511 and the second hinge 512. Since the lower tongue 5121 of the second hinge 512 corresponds to the lower part of the long tooth 53, the long tooth 53 is restricted from coming out between the two hinges, thereby restricting the rotation of the drive sleeve 41, causing the drive sleeve 41 to move upward to drive the jaws of the clamp 30 to close and clamp the wire rope 100.

[0078] After the servo motor 48 drives the lead screw 46 to continue rotating forward to make the clamp 30 clamp the wire rope 100, the long tooth 53 axially moves with the drive sleeve 41 until the lower edge of the long tooth 53 is higher than the lower edge of the upper notch 5122 of the second hinge 512, and the long tooth 53 comes out of the upper notch 5122, and the limiting mechanism 50 releases the restriction on the drive sleeve 41. Let's call the axial position where the drive sleeve 41 is restricted by the limiting mechanism 50 the initial axial displacement. After the limiting mechanism 50 releases the restriction on the drive sleeve 41, the resistance of the wire rope 100 to the moving cutter 20 is used to restrict the rotation of the drive sleeve 41, so that the drive sleeve 41 continues to move upward and locks with the locking table 47, enabling the subsequent servo motor 48 to drive the drive sleeve 41 to rotate to cut and tighten the wire rope 100.

[0079] After the tightening is completed and the servo motor 48 drives the lead screw 46 and the drive sleeve 41 to reverse, the tooth component enters between the two hinges from between the second hinge 512 and the drive sleeve 41. Whether the tooth component entering between the two hinges is the end tooth 52 or the long tooth 53, the tooth component is restricted from escaping between the two hinges because it corresponds to the upper tongue piece 5111 of the first hinge 511, thereby restricting the reverse rotation of the drive sleeve 41 to prevent the wire rope 100 after tightening from loosening due to reverse rotation. At this time, the drive sleeve 41 moves downward, causing the clamp 30 to open. If the tooth component entering between the two hinges is the end tooth 52, when the end tooth 52 moves downward with the drive sleeve 41 until the upper edge of the end tooth 52 is lower than the lower edge of the upper tongue piece 5111 of the first hinge 511 and corresponds to the lower notch 5112, the end tooth 52 escapes from the lower notch 5112, and the drive sleeve 41 then reverses, causing other tooth components to enter between the two hinges. However, in any case where the tooth component entering between the two hinges is the end tooth 52, the tooth component can escape from between the two hinges until the long tooth 53 enters between the two hinges. The upper part of the long tooth 53 corresponds to the upper tongue piece 5111 of the first hinge 511, thereby restricting the long tooth 53 between the two hinges until the drive sleeve 41 is fully reset.

[0080] When the drive sleeve 41 initially reverses, if the tooth component entering between the two hinges is the long tooth 53, the long tooth 53 is always restricted between the two hinges until the drive sleeve 41 is fully reset.

[0081] Preferably, the number of tooth components can be increased as much as possible to increase the arrangement density, so that the drive sleeve 41 is restricted from rotating after reversing a small angle, which is more conducive to preventing the wire rope 100 from loosening.

[0082] The limiting mechanism 50 can not only make the clamp 30 clamp the wire rope 100 by restricting the rotation of the drive sleeve 41, but also, by finally limiting the long tooth 53, make the moving cutter 20 return to the angular state where the wire passing groove 21 is opposite to the wire guiding hole 13 each time.

[0083] In some preferred embodiments, such as Figure 1 and Figure 2As shown in the figure, the steel bar 200 bundling device further includes a pressing device 80 and a tensioning device 70. The pressing device 80 includes a pressing block 81, a positioning plate 82 disposed above the pressing block 81, a contact switch 85 disposed above the positioning plate 82, a guide rod 83 with its lower end connected to the pressing block 81 and its upper end passing through the positioning plate 82, and a second spring 84 disposed between the pressing block 81 and the positioning plate 82. The tensioning device 70 includes a holding plate 71, a hook 72, and a cylinder 73. A guiding groove 711 with a broken line is formed on the holding plate 71, and a guiding column 721 is disposed on the hook 72. The guiding column 721 passes through the guiding groove 711 and slides along the guiding groove 711. The cylinder 73 is connected to the tail of the hook 72 and pulls the hook 72 to cause the hook 72 to twist towards the steel bar 200 and then move upward to tension the steel bar 200. After using the linear drive mechanism to drive the bundling device close to the intersecting steel bars 200 and enabling the steel bars 200 to enter the circular inner cavity of the wire guiding plate 10 through the notch 12, the cylinder 73 is used to drive the hook 72 to tension the steel bar 200 located below, and the pressing block 81 presses against the steel bar 200 located above until the upper end of the guide rod 83 triggers the switch, causing the pressing block 81 to stop pressing against the upper steel bar 200, thereby bringing the two steel bars 200 into closer contact to prepare for subsequent bundling of the steel bars 200.

[0084] The above embodiments are only exemplary embodiments of the present invention and are not used to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements within the essence and protection scope of the present invention, and such modifications or equivalent replacements should also be regarded as falling within the protection scope of the present invention.

Claims

1. A steel bar bundling device, characterized in that, Comprising: A wire guiding plate having a circular inner cavity and a notch at the bottom of the circular inner cavity, through which the intersecting steel bars enter the circular inner cavity, and a circumferentially extending wire guiding groove is formed on the inner wall of the circular inner cavity; a laterally extending wire guiding hole is formed on the side of the wire guiding plate, and a receiving cavity is provided at the top of the wire guiding plate, and the wire guiding hole penetrates through the inner wall of the receiving cavity; A moving cutting knife disposed in the receiving cavity, a wire passing groove is formed upward from the bottom surface of the moving cutting knife, the wire passing groove radially penetrates through the moving cutting knife, and a rectangular cavity axially penetrating is formed in the moving cutting knife; A clamp disposed in the rectangular cavity of the moving cutting knife; A wire feeding mechanism disposed on one side of the wire guiding plate, the wire feeding mechanism is used to drive a wire rope to pass through the wire guiding hole, pass through the wire passing groove of the moving cutting knife, and pass through the rear jaw of the clamp when passing through the wire passing groove, and after passing through the rear jaw, feed along the wire guiding groove for one circle to bypass the steel bar, and after bypassing the steel bar, the distal end of the wire rope passes through the front jaw of the clamp; A tightening driving mechanism configured to drive the clamp to clamp the wire rope located between the front jaw and the rear jaw, and after the clamp clamps the wire rope, drive the moving cutting knife and the clamp to rotate synchronously to cut off the proximal end of the wire rope and twist and tighten the wire rope; A stepped groove is formed at the rear jaw of the clamp, so that when the clamp is in the clamping state, the clamp allows the wire rope in the rear jaw to be able to unwind, while restricting the wire rope in the front jaw from unwinding; The tightening driving mechanism includes: A driving sleeve coaxially disposed above the moving cutting knife; A shaft rod located in the driving sleeve, and the lower end of the shaft rod extends out of the lower end of the driving sleeve, and the moving cutting knife is formed at the lower end of the shaft rod; the clamp has a first pivot shaft located below and connected to the moving cutting knife and a second pivot shaft located above and connected to the driving sleeve; an axially extending long hole is formed on the shaft rod, and the second pivot shaft passes through the long hole; A wire nut sleeve installed at the upper end of the driving sleeve; A lead screw passing through the wire nut sleeve and capable of forming a screw drive with the wire nut sleeve; A servo motor disposed above the lead screw and used to drive the lead screw to rotate; A locking platform disposed at the upper end of the lead screw for stopping the driving sleeve; A limiting mechanism configured to at least limit the rotation of the driving sleeve within an initial axial displacement and release the restriction on the driving sleeve after passing through the initial axial displacement.

2. The steel bar bundling device according to claim 1, wherein, The servo motor drives the lead screw to rotate. When the limiting mechanism restricts the rotation of the driving sleeve, the lead screw drives the driving sleeve to move axially upward through cooperation with the wire nut sleeve to drive the second pivot shaft to move upward, so that the jaws of the clamp are closed to clamp the wire rope; After the clamp clamps the wire rope, the driving sleeve continues to move upward to cause the limiting mechanism to release the restriction on the driving sleeve; After the limiting mechanism releases the restriction on the driving sleeve, the wire rope generates a torsional impedance to the moving cutting knife to limit the rotation of the driving sleeve, so that the driving sleeve moves upward to lock with the locking platform; After being locked with the locking platform, the servo motor drives the driving sleeve to rotate through the locking platform, so as to drive the moving cutter to rotate, cut off the proximal end of the wire rope, and rotate and tighten the wire rope.

3. The steel bar bundling device according to claim 2, characterized in that, The tightening driving mechanism further includes a force transmission rod and a first spring; The upper end of the force transmission rod is fixedly connected to the lower end of the lead screw. The lower end of the force transmission rod forms a limiting end. The upper end of the shaft rod is provided with a compensation hole, and the limiting end extends into the compensation hole and is limited in the compensation hole; The first spring is arranged on the force transmission rod to be used for pushing the shaft rod downward; A first stop surface is formed on the outer periphery of the shaft rod, and a second stop surface facing the first stop surface is formed in the driving sleeve.

4. The steel bar bundling device according to claim 2, wherein The limiting mechanism includes a limiting component and a plurality of tooth components; A plurality of the tooth components are arranged circumferentially on the outer periphery of the driving sleeve; The limiting component is arranged on the outside of the driving sleeve. The limiting component includes a frame and two hinges symmetrically pivoted on the frame. A torsion spring is arranged between each hinge and the frame so that the hinge twists towards the driving sleeve; wherein: When the driving sleeve moves within the initial axial displacement, the limiting component restricts the tooth component between the two hinges to restrict the rotation of the driving sleeve; after the driving sleeve undergoes the initial axial displacement, the limiting component enables the tooth component to escape from one side of the hinge to release the restriction on the driving sleeve.

5. The steel bar bundling device according to claim 4, characterized in that, The tooth component includes a long tooth and a plurality of short teeth; two notches are formed on the inner sides of the two hinges, and the two notches are arranged in an upper and lower offset manner; wherein: The lower edges of the plurality of short teeth are flush, and the lower edge of the short tooth is not lower than the lower edge of the long tooth.

6. The steel bar bundling device according to claim 1, characterized in that, The steel bar bundling device further includes a pressing device. The pressing device includes a pressing block, a positioning plate arranged above the pressing block, a contact switch arranged above the positioning plate, a guide rod with its lower end connected to the pressing block and its upper end passing through the positioning plate, and a second spring between the pressing block and the positioning plate.

7. The steel bar bundling device according to claim 1, characterized in that, The steel bar bundling device further includes a tensioning mechanism. The tensioning mechanism includes: A holding plate, on which a guiding groove with a broken line is formed; A hook, on which a guiding column is arranged. The guiding column passes through the guiding groove and slides along the guiding groove; A cylinder, which is connected to the tail of the hook and makes the hook twist towards the steel bar and then move upward to tension the steel bar by lifting the hook.

8. The steel bar bundling device according to claim 1, wherein The wire feeding mechanism includes a mounting plate, a straightening roller arranged on the mounting plate, a pressing roller arranged on the mounting plate, a driving roller arranged opposite to the pressing roller, and a driving motor for driving the driving roller to rotate.

9. The steel bar bundling device according to claim 1, wherein, The inlet end of the wire rope entering the wire guiding groove is higher than the outlet end of the wire guiding groove where the distal end of the wire rope extends.

Images