Openable wire feeder and steel bundling machine using the same

Abstract

The application discloses a steel material baling machine with an openable wire feeding mechanism, and replaces the inner and outer wire feeding channels of the steel material baling machine with the openable wire feeding mechanism. The wire feeding groove of the wire feeding mechanism cooperates with the cover plate to form a closed wire feeding groove, and the cover plate opening and closing state is controlled by the control component. In the outer wire feeding channel, the first moving component is arranged on the first fixed component, the top of the second moving component is connected with the first moving component, and the bottom of the second moving component is arranged in the wire feeding groove of the second fixed component. When the first moving component moves, the second moving component connected with the first moving component moves, the bottom of the second moving component in the wire feeding groove also moves along the wire feeding direction, and one or more reinforcing steels in the wire feeding groove are pushed to the inner wire feeding channel of the steel material baling machine, so that the application range of the steel material baling machine is expanded.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of baling press equipment, more particularly, relates to a kind of openable wire feeding mechanism and steel (rebar) baling press using this wire feeding mechanism. BACKGROUND

[0002] In traditional industry, rebar, steel and the like are often baled by manual work using simple tools. Under manual labor, it is easy to cause worker fatigue due to high work intensity, and it is also possible to cause work injury, which is not conducive to safety production. At the same time, it also makes the baling efficiency low and the baling quality not high. To solve these problems, some rebar baling equipment appears on the market, such as Chinese invention patent "Bar baling machine and baling method" (application number CN2010105702801, application date December 2, 2010, authorized announcement date August 15, 2012), but these equipment has the following problems: (1) the gripping force of the baling wire is not enough, so that the baling tightening force is not enough, causing the baling to be loose; (2) the baling wire is easy to wind and roll when feeding; (3) the baling wire lacks relevant design of automatic feeding.

[0003] To overcome the problems of traditional industry and existing rebar baling machine, relevant cooperative companies have developed Chinese invention patents "Full-automatic mechanical hand rebar baling machine" (application number 2015103507968, application date June 23, 2015, authorized announcement date December 26, 2017) and "Rebar baling machine based on driven opening and closing clamping block device" (application number 2016102833451, application date April 28, 2016, authorized announcement date May 11, 2018).

[0004] Chinese invention patent with publication number CN104925293B discloses a rebar baling equipment named "Full-automatic mechanical hand rebar baling machine". The invention patent realizes the baling of rebar bundle by the cooperation of the lower wire feeding straightening workbench and the rotating clamping mechanical paw. The lower wire feeding straightening workbench is composed of a base, a wire mess frame, a roller straightening machine, a hydraulic shear, an opening and closing guide pipe and a stand. The opening and closing guide pipe is composed of a tightening hydraulic cylinder, a four-bar linkage mechanism and a guide pipe (the tightening hydraulic cylinder can control the opening and closing state of the guide pipe through the four-bar linkage mechanism). During work, the lower wire feeding straightening workbench is responsible for feeding the baling wire through the bottom of the rebar bundle and into the rotating clamping mechanical paw (at this time, the opening and closing guide pipe of the lower wire feeding straightening workbench is in a closed state, the wire is fed into the opening and closing guide pipe, and the opening and closing guide pipe plays a wire guiding role). When the wire feeding length reaches the set wire feeding length, the hydraulic shear cuts off the wire, then the opening and closing guide pipe is opened, and the rotating clamping mechanical paw pulls the two ends of the wire to the set height and then rotates, realizing the baling of the rebar bundle.

[0005] Chinese invention patent CN105775201B discloses a steel bar bundling machine entitled "A driven opening and closing clamping block device". The driven opening and closing clamping block device is used to replace the opening and closing guide tube in CN104925293B. Compared with the opening and closing guide tube in CN104925293B, the driven opening and closing clamping block device has a simpler structure and does not require active power drive components such as hydraulic cylinders or air cylinders, thereby simplifying the motion mechanism, saving costs, and eliminating the control program of active power drive components such as hydraulic cylinders or air cylinders, effectively avoiding malfunctions.

[0006] While these baling machines not only solved the aforementioned problems but also gained market favor, in actual use, they can only perform threading, bundling, and rotation of a single rebar. That is, for a given rebar to be bundled, only one rebar can be used for bundling (only one rebar can be used at a time for a fixed bundling position), and they cannot bundle multiple rebars (i.e., they cannot use multiple rebars to bundle a fixed bundling position). Although the bundling effect of the baling machine is good, and using a single rebar can meet customer needs, under certain conditions, it is necessary to use two rebars simultaneously to meet transportation and usage requirements. This severely limits the applicability of the rebar baling machine, hindering its wider promotion and use. Furthermore, the front-to-back feeding method requires precise control of the rebar feeding process, which can easily lead to feeding difficulties or errors. Summary of the Invention

[0007] The purpose of this invention is to overcome the shortcomings of the prior art. Based on existing and developed rebar bundling machines, while keeping the basic structure unchanged, adjustments are made to the structure and / or composition to adapt to the feeding and bundling of one or more rebars for bundling.

[0008] The technical objective of this invention is achieved through the following technical solution.

[0009] The openable wire feeding mechanism is characterized by comprising a first fixing component and a second fixing component disposed between the wire feeding channel and the hydraulic shear within the steel baling machine, and a third fixing component disposed between the left and right rotating arms of the twisting manipulator of the steel baling machine, wherein:

[0010] The first, second, and third fixing components are all arranged parallel to the wire feeding direction of the bundled steel bars; wire feeding grooves are provided in the second and third fixing components, and the wire feeding grooves of the second and third fixing components are opposite to each other in the wire feeding direction to form a continuous wire feeding channel; a controllable movable cover plate is provided above the wire feeding grooves of the second and third fixing components to realize the opening and closing control of the wire feeding grooves;

[0011] A first movable component is provided on the first fixed component, which can move along the wire feeding direction of the bundling steel bar. One end of the second movable component is connected to the first movable component, and the other end is located in the wire feeding groove of the second fixed component. When the first movable component moves on the first fixed component, the first movable component drives the second movable component connected to it to move along the wire feeding direction as well. The other end of the second movable component located in the wire feeding groove of the second fixed component also moves along the wire feeding direction, thereby pushing the bundling steel bar located in the wire feeding groove into the inner wire feeding channel.

[0012] In the technical solution of the present invention, the cover plate is connected to the cover plate control system. The cover plate control system consists of a cover plate control cylinder and a moving mechanism. The cylinder output shaft of the cover plate control cylinder is connected to the support transmission component of the moving mechanism. A cover plate is provided on the top of the support transmission component, and a moving component is provided at the bottom of the support transmission component. The moving component is set on a track.

[0013] In the technical solution of this invention, the second moving component includes a horizontal portion, a vertical portion, and a protrusion. One end of the horizontal portion is fixedly connected to the first moving component, so that the second moving component and the first moving component are connected as one unit, and the other end extends to the top of the wire feeding groove of the second fixed component. The vertical portion is arranged in a vertically downward direction that is substantially perpendicular to the horizontal portion, and the bottom of the vertical portion is provided with a protrusion. The shape of the vertical portion and / or the protrusion matches the shape of the wire feeding groove of the second fixed component. A wire feeding through hole is provided in the vertical portion of the second moving component. In the structure of the second moving component, a sliding groove is provided on the horizontal portion connected to the vertical portion, and a second connecting hole is provided on the horizontal portion around the sliding groove. The vertical portion of the baffle is connected to the horizontal portion of the baffle at a substantially 90-degree angle. The vertical portion of the baffle is connected to the second connecting hole by screws or bolts. An insert is disposed in the sliding groove and is connected to an insert control system to control the movement of the insert in the vertical direction through the insert control system.

[0014] In the technical solution of this invention, the insert control system is an insert control cylinder. The cylinder output shaft of the insert control cylinder is connected to or in contact with the top of the insert. The vertical movement of the cylinder output shaft drives the vertical movement of the insert, thereby controlling the opening and closing state of the wire feeding through hole at the bottom of the insert. The insert control cylinder, as the insert control system, is selected and installed on the hydraulic shear or on the horizontal part of the second moving component. A sliding hole is provided in the slide groove, and the slider of the insert is installed in the sliding hole. The upper surface of the slide groove is flush with the upper surface of the vertical part and the protrusion. In the vertical direction, the distance from the horizontal part of the baffle to the bottom of the second moving component is approximately the same as the depth of the wire feeding groove of the second fixed component.

[0015] In the technical solution of the present invention, a lifting mechanism is provided between several third fixed components of the inner wire feeding channel, preferably located at the center between two third fixed components; the lifting mechanism includes a lifting cylinder, and the entire lifting mechanism is installed on the mounting base of the third fixed component of the baler using a mounting bracket. The lifting cylinder is fixedly located below the lower mounting plate, and the output shaft of the lifting cylinder passes through the lower mounting plate and is connected to the bottom end of the lifting core. Support columns are provided around the lower mounting plate, and an upper mounting plate is provided at the top of the support columns. Observation and detection holes are provided on the support columns; the lifting core passes through the upper mounting plate and the mounting base, and its top end is located between the inlet and outlet of the wire feeding groove of the adjacent third fixed component; a limiting device is fitted onto the lifting core and fits against the lifting core, and the upper mounting plate is fixed to the lower surface of the mounting base and the limiting device is fixed to the upper surface of the mounting base by screws or bolts.

[0016] In the technical solution of the present invention, a damping mechanism is provided on the outside of the twisting manipulator, including two partitions arranged opposite each other and a magnet arranged on the outside of each partition. An extended wire feeding channel is formed between the partitions, serving as a through hole of the twisting manipulator and a horizontal extension of the inner wire feeding channel.

[0017] The number of the second fixing component is one, and the number of the third fixing component is at least one, preferably two to four.

[0018] A steel bundling machine employing the wire feeding mechanism of the present invention.

[0019] Compared with existing technologies, this invention completely replaces the inner and outer wire feeding channels, adopts a design that coordinates fixed components, moving components, and opening and closing covers, and uses a servo motor, stepper motor, or hydraulic motor as the power source for control. One or more bundled steel bars from the hydraulic shear can enter the outer wire feeding channel. When the moving component pushes the wire, the outer wire feeding channel is relatively closed, and the inner wire feeding channel is closed. When lifting and twisting the wire (i.e., lifting and bundling the wire), the inner wire feeding channel opens, achieving stable and accurate wire feeding, reducing the failure rate, and thus adapting to the wire feeding and bundling of one or more bundled steel bars. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a top-entry rebar bundling machine improved by a related partner company.

[0021] Figure 2 This is a schematic diagram of the bundling of bar steel bars in existing technology.

[0022] Figure 3 This is a schematic diagram of the wire feeding mechanism previously developed by our company (1).

[0023] Figure 4 This is a schematic diagram of the wire feeding mechanism previously developed by our company (2).

[0024] Figure 5 This is a schematic diagram of the cover plate of the second fixing component in the wire feeding mechanism of the present invention in the open state.

[0025] Figure 6 This is a schematic diagram of the closed state structure of the cover plate of the second fixing component in the wire feeding mechanism of the present invention.

[0026] Figure 7 This is a schematic diagram of the structure of the third fixing component and the damping mechanism in the wire feeding mechanism of the present invention.

[0027] Figure 8 This is a schematic diagram (1) of the structure of the second moving component in the wire feeding mechanism of the present invention.

[0028] Figure 9 This is a schematic diagram (2) of the structure of the second moving component in the wire feeding mechanism of the present invention.

[0029] Figure 10 This is a schematic diagram (3) of the structure of the second moving component in the wire feeding mechanism of the present invention.

[0030] Figure 11 This is a schematic diagram (4) of the structure of the second moving component in the wire feeding mechanism of the present invention.

[0031] Figure 12 This is a schematic diagram of the lifting mechanism in the steel bundling machine of the present invention.

[0032] Wherein, 1—left rotating arm, 2—left clamping working surface, 3—right rotating arm, 4—right clamping working surface, 5—barrel for bundling, 6—bundled bar for bundling, 7—left clamping arm, 8—right clamping arm, 9—base, 10—wheel, 11—hydraulic shears, 12—straightening machine, 13—arc guide device, 14—pre-straightening roller group, 15—wire feeding guide device, 16—first column, 17—bracket, 18—second column, 19—opening and closing guide tube, 20—rotating... Twisting robot, 21—External wire feeding channel, 22—Internal wire feeding channel, 23—Protective cover, 24—First fixed component, 25—First moving component, 26—Second moving component, 26-1—Horizontal part, 26-2—Vertical part, 26-3—Protrusion, 26-4—First connecting hole, 26-5—Wire feeding through hole, 26-6—Second connecting hole, 26-7—Sliding hole, 26-8—Sliding groove, 26-9—Baffle, 26-9-1—Vertical part of baffle, 2 6-9-2—Horizontal part of the baffle plate; 26-10—Insertion plate; 26-10-1—Slider of the insertion plate; 26-10-2—Top of the insertion plate; 27—Second fixing component; 27-1—Wire feeding groove of the second fixing component; 27-2—Cover plate of the third fixing component; 28—Cover plate control cylinder; 28-1—Cylinder output shaft of the cover plate control cylinder; 29-1—Moving component; 29-2—Support transmission component; 29-3—Railway; 30—Third fixing component. 31—Lifting mechanism, 31-1—Lifting cylinder, 31-2—Lifting core, 31-3—Limiting device, 31-4—Mounting bracket, 31-4-1—Upper mounting plate, 31-4-2—Lower mounting plate, 31-4-3—Support column, 31-4-4—Observation and detection hole, 32—Damping mechanism, 32-1—Magnet, 32-2—Extended wire feeding channel, 32-3—Partition plate, 33—Insertion control cylinder, 33-1—Cylinder output shaft of insertion control cylinder.

[0033] For those skilled in the art, other related figures can be obtained from the above figures without any creative effort. Detailed Implementation

[0034] The technical solution of the present invention will be further described below through specific embodiments.

[0035] The following explanation uses the improved "top-entry rebar bundling machine" from a relevant partner company as an example. (See attached image) Figure 1As shown, a rebar bundling machine is detailed in the invention patent "A Rebar Bundling Machine with Top Inlet" (Patent No. ZL2021206564094, Application Date: March 31, 2021, Authorization Announcement Date: February 1, 2022). The twisting manipulator adopts the structure of the invention patent "A Twisting and Bundling Manipulator" (Patent No. ZL2015103514162, Application Date: June 23, 2015, Authorization Announcement Date: December 26, 2017), and the opening and closing guide tube adopts the structure of the invention patent "A..." The structure of the "Driven Opening and Closing Clamping Block Device for Threading Guide in Rebar Bundling Machine" (Patent No. ZL2016203827699, application date April 28, 2016, authorization announcement date November 23, 2016, i.e., spring-based opening and closing guide) or the structure of the invention patent "An Automatic Opening and Closing Guide Device Based on Spring Sheets" (Patent No. ZL2020217655389, application date August 21, 2020, authorization announcement date April 6, 2021, i.e., spring-based opening and closing guide) is required regardless of the structure of the opening and closing guide. Several opening and closing guides need to be arranged in the wire feeding direction (i.e., from the hydraulic shear to the left clamping working surface of the left rotating arm) to form a basically continuous wire feeding channel. This allows the rebar for bundling to enter from the rear end of the bundling machine, be straightened, and then enter the horizontally set wire feeding channel until it reaches the through holes of the left and right clamping working surfaces of the left and right rotating arms. For ease of description, the entire wire feeding channel is divided into two parts: the section from the twisting robot to the hydraulic shear is called the "outer wire feeding channel," and the section located between the left and right rotating arms of the twisting robot is called the "inner wire feeding channel."

[0036] like Figure 2The following diagram illustrates the basic working process of a baling machine, using the bundling of bar steel as an example. Since the cross-section of steel bars is circular or nearly circular, the steel bars to be bundled, transported from the steel bar production line, are gathered into a bundle. The bundle's cross-section is also circular or nearly circular. The baling steel bar passes underneath this bundle, with its left and right ends respectively positioned in the through holes of the left clamping working surface below the left rotating arm and the right clamping working surface below the right rotating arm. During the bundling process, the left and right rotating arms move upwards, thereby driving the baling steel bar to move along the left and right ends of the steel bars to be bundled. Because the steel bars to be bundled are gathered into a bundle, and the cross-section of the bundle is circular or nearly circular, the baling steel bar experiences less resistance from the steel bars to be bundled. The baling steel bar can make good contact (i.e., close fit) with the bundled steel bars (i.e., the steel bars to be bundled), especially with the bottom or lower surface of the bundle (i.e., close fit). At this point, above the bundled rebar, the left and right clamping arms work together to clamp and rotate the bundled rebar into a knot, thus binding and securing the bundled rebar. In the wire feeding channel formed by the opening and closing guide tubes, the two bundled rebars are fed using a front-to-back pushing method. That is, after the hydraulic shears cut, the tail of the first rebar is pushed forward by the head of the second rebar, moving along the wire feeding channel. For the rebar to be bundled, at this fixed bundling position, only one bundled rebar can be used for bundling; it is impossible to bundle multiple rebars.

[0037] In our previous technical solutions, the "external wire feeding channel" was completely replaced. Specifically, a self-developed wire feeding mechanism was used as the "external wire feeding channel" for installation and use. See our Chinese invention patent application "A Wire Feeding Mechanism and a Rebar Bundling Machine Utilizing This Mechanism" (Application No. 2022116757158, Application Date December 26, 2022). (See attached...) Figure 3As shown, two opening and closing guide tubes form an "internal wire feeding channel," and a lifting mechanism (not shown) can be optionally installed between the two opening and closing guide tubes. The first and second fixed components of the wire feeding mechanism are located between the internal wire feeding channel and the hydraulic shear. Both the first and second fixed components are parallel to the wire feeding direction of the bundled rebar. A first moving component that can move along the wire feeding direction of the bundled rebar is installed on the first fixed component. The first fixed component is a guide screw, and the first moving component is a slider that moves on the guide screw, powered and controlled by a servo motor or hydraulic motor. A wire feeding groove is installed in the second fixed component to match the internal wire feeding channel (i.e., the opening and closing guide tubes and their wire feeding channels) and the hydraulic shear of the rebar bundling machine, so that the bundled rebar can be fed along the path of "hydraulic shear—wire feeding groove—opening and closing guide tube" (equivalent to the wire feeding direction). One end (i.e., the top) of the second moving component is connected to the first moving component, and the other end (i.e., the bottom) is located in the wire feeding groove of the second fixed component. When the first moving part moves on the first fixed part (such as a lead screw), the first moving part drives the second moving part connected to it to move along the wire feeding direction as well. The other end of the second moving part, located in the wire feeding groove of the second fixed part, also moves along the wire feeding direction, thereby pushing one or two bundled steel bars located in the wire feeding groove towards the opening and closing guide and the wire feeding channel of the opening and closing guide. See attached. Figure 4 As shown, observing the cross-section of the second fixed component along the wire feeding direction, it can be seen that the wire feeding groove is located in the center of the second fixed component. The top of the second moving component is fixedly connected to the first moving component, and the bottom of the second moving component is located in the wire feeding groove of the second fixed component to push the bundled rebar. At this time, two bundled rebars are set in the wire feeding groove to provide two bundled rebars for a specific bundling position to achieve the subsequent clamping and rotating bundling action. This rebar bundling machine uses a wire feeding mechanism formed by the wire feeding groove and the moving component to replace the external wire feeding channel, and sets a lifting mechanism in the internal wire feeding channel to meet the bundling operation of bars and / or profiles. This rebar bundling machine retains the basic configuration and / or components of the previous rebar bundling machine. In the design, depending on whether the wire feeding requirement is one or multiple bundled rebars, the internal wire feeding channel composed of opening and closing guides is expanded in diameter to meet the needs of double or multiple wires, based on the original single bundled rebar application. However, after on-site testing, there are still problems with wire feeding (i.e., the problem of conveying the bundled steel bars). For example, (1) after being processed by hydraulic shears, the bundled steel bars will bend in the wire feeding groove if they are not straight enough, so that the front end cannot enter the rotating clamping mechanical claw and / or the inner wire feeding channel, and the rear end is easy to be inserted into the wire feeding through hole that cooperates with the hydraulic shear when pushing the wire; (2) when using the opening and closing guide tube to form the inner wire feeding channel, one or two wires are very easy to be stuck by the claw of the opening and closing guide tube when lifting, and cannot be lifted and rotated and clamped.

[0038] To solve the above problems, the technical solution of this invention employs an "openable and closable wire feeding mechanism" to form the inner and outer wire feeding channels. This openable and closable wire feeding mechanism includes a first fixing component and a second fixing component disposed between the wire feeding channel and the hydraulic shear in the rebar bundling machine, and a third fixing component disposed between the left and right rotating arms of the rebar bundling machine's twisting manipulator (i.e., between the left and right clamping working surfaces), wherein:

[0039] Combination Figure 3 , 5 Referring to section 6, the first, second, and third fixing components are all arranged parallel to the wire feeding direction of the bundled steel bars; wire feeding grooves are provided in the second and third fixing components, and in the wire feeding direction, the wire feeding grooves of the second and third fixing components are opposite to each other to form a continuous wire feeding channel, which means that... Figure 3 The two-part opening and closing catheter 19 was replaced with Figure 7 The system includes two third fixed components 30 (i.e., an inner wire feeding channel composed of two third fixed components), and preferably a lifting mechanism 31 is provided between the two third fixed components 30. A controllable movable cover plate is provided above the wire feeding grooves of the second and third fixed components (i.e., the tops of the second and third fixed components) to achieve control over the opening and closing of the wire feeding grooves (i.e., control over the opening or closing of the top of the wire feeding grooves). To achieve the movement control of the cover plate, taking the second fixed component as an example, the cover plate is connected to a cover plate control system. The cover plate control system consists of a cover plate control cylinder and a moving mechanism. The cylinder output shaft of the cover plate control cylinder is connected to the support transmission component of the moving mechanism. A cover plate is provided at the top of the support transmission component, and a moving component is provided at the bottom of the support transmission component. The moving component is mounted on a track (such as a slide rail and a slider that cooperates with the slide rail). The cylinder, driven by a command, moves its output shaft. This output shaft then moves the support transmission component and the moving component left and right on the track. The top of the support transmission component is connected to the cover plate, and the design of the support transmission component is based on parameters such as the height of the second fixed component, the depth of the wire feeding groove, and the height of the track and moving component, to achieve the closing and opening of the wire feeding groove by the cover plate. It should be noted that the overall structure of the second and third fixed components is basically the same. Along the wire feeding direction, the length of the third fixed component is less than the length of the second fixed component. Generally, there is one second fixed component, and at least one third fixed component, preferably two to four.

[0040] Combination Figure 3 and 8—11. A first moving part that can move along the wire feeding direction of the bundled steel bars is provided on the first fixed part. The top of the second moving part is connected to the first moving part, and the bottom of the second moving part is located in the wire feeding groove of the second fixed part. When the first moving part moves on the first fixed part, the first moving part drives the second moving part connected to it to move along the wire feeding direction as well. The bottom of the second moving part located in the wire feeding groove of the second fixed part also moves along the wire feeding direction, so as to push one or more bundled steel bars located in the wire feeding groove into the wire feeding channel inside the steel bar bundling machine, that is, into the wire feeding groove of the third fixed part located between the left and right rotating arms of the twisting manipulator of the steel bar bundling machine.

[0041] As attached Figure 8 As shown in Figure 11, the structure of the second moving component in the wire feeding mechanism of the present invention is described, wherein... Figure 8 This is a view taken along the wire feeding direction (main body of the second moving part). Figure 9 This is its corresponding top view (the main body of the second moving component). Figure 10 and 11 These are side views (partial cross-sections) of the wire feed through hole in both closed and open states, which are explained in conjunction with the following:

[0042] from Figure 8 and 9As shown in the structure, the second moving component includes a horizontal portion 26-1, a vertical portion 26-2, and a protrusion 26-3. The horizontal portion forms the top (or tip) of the second moving component. One end of the horizontal portion is fixedly connected to the first moving component, so that the second moving component and the first moving component are connected as one unit. A first connecting hole 26-4 is provided at one end of the horizontal portion, and the two are fixedly connected by screws or bolts. The horizontal portion has a certain length, with one end fixedly connected to the first moving component and the other end extending above the wire feeding groove of the second fixed component. A vertical portion is provided in a vertically downward direction that is substantially perpendicular to the horizontal portion, and a protrusion is provided at the bottom of the vertical portion. The protrusion forms the bottom (or base) of the second moving component, and the shape of the vertical portion and / or the protrusion matches the shape of the wire feeding groove of the second fixed component. When the first moving part moves on the first fixed part, it drives the second moving part to move as a whole. At this time, the vertical part and / or the protrusion can move within the wire feeding groove of the second fixed part and push the bundling steel bar located in the wire feeding groove into the inward wire feeding channel. A wire feeding through hole 26-5 is provided in the vertical part of the second moving part, which cooperates with the hydraulic shear. During the wire feeding process, the bundling steel bar enters the second fixed part through the wire feeding through hole after being cut by the hydraulic shear. After reaching a certain length, the hydraulic shear cuts the steel bar. From the wire feeding direction, the tail of the steel bar is cut off from the top of the rear steel bar. The cut bundling steel bar falls into the wire feeding groove, and then is pushed into the inward wire feeding channel by the protrusion of the second moving part.

[0043] In actual operation, after the bundled steel bars are straightened by a straightening machine and cut by hydraulic shears, their overall shape and / or tail may be uneven and / or warped. When the second moving part is used to push them, it is very easy to cause problems such as failure to feed wire or wire feeding defects. For example, the warped tail of the bundled steel bar may accidentally enter the wire feeding through hole, or the bundled steel bar that is not straight may extend vertically out of the wire feeding groove and thus fail to enter the subsequent right rotating arm (right clamping working surface) and / or the wire feeding groove (i.e., the inner wire feeding channel) of the third fixed part. This requires that the second moving part, which is mainly responsible for the wire feeding function, can ensure that the head of the bundled steel bar enters the inner wire feeding channel smoothly during wire feeding, and that its tail does not enter the wire feeding through hole. In the structure of the second moving component, a groove 26-8 is provided on the horizontal part connected to the vertical part. A second connecting hole is provided on the horizontal part around the groove. The vertical part of the baffle plate is connected to the horizontal part of the baffle plate at approximately a 90-degree angle. If the two are fixed or connected as one unit, the vertical part of the baffle plate is connected to the second connecting hole by screws or bolts. The insert 26-10 is disposed in the groove and is connected to the insert control system. The insert control system controls the vertical movement of the insert, thereby controlling the opening and closing state of the wire feeding through hole at the bottom of the insert. The insert control system is an insert control cylinder. The cylinder output shaft of the insert control cylinder is connected to or in contact with the top of the insert. The vertical movement of the cylinder output shaft of the insert control cylinder drives the vertical movement of the insert, thereby controlling the opening and closing state of the wire feeding through hole at the bottom of the insert. The insert control cylinder, which serves as the insert control system, is optionally disposed on the hydraulic shear or on the horizontal part of the second moving component. To prevent the insert from detaching from the groove, sliding holes 26-7 are provided in the groove (the sliding holes are set vertically). The slider of the insert is set in the sliding hole. When the insert moves vertically, the slider of the insert moves vertically in the sliding hole, simultaneously limiting the range of motion of the insert. It should be noted that the upper surface of the groove is flush with the upper surfaces of the vertical part and the protrusion. In this way, the insert can move vertically up and down on the surface of "groove-vertical part-protrusion" to avoid vertical obstruction. In the vertical direction, the distance from the horizontal part of the baffle to the bottom of the second moving part is roughly the same as the depth of the wire feeding groove of the second fixed part. During wire feeding, the cover plate of the second fixed part opens, and the second moving part moves along the wire feeding direction. At this time, the bottom of the second moving part is located in the wire feeding groove, and the horizontal part of the baffle acts as part of the cover plate, reducing the occurrence of wire feeding defects.

[0044] The design employs a combination of a wire feeding groove and a cover plate, with the opening and closing states of the wire feeding groove controlled by a cover plate control system. When the bundled steel bars are fed from the hydraulic shear into the second fixing component (the wire feeding groove of the second fixing component), the cover plate of the second fixing component is in a closed state, so that the entire wire feeding groove of the second fixing component is covered and sealed, ensuring that the bundled steel bars can only move within the channel formed by the wire feeding groove and the cover plate. When the reinforcing bars for bundling are fed from the second fixed component to the third fixed component, the cover plate of the second fixed component is open, so that the entire wire feeding groove of the second fixed component is uncovered. At this time, the baffle of the second moving component covers the top of the wire feeding groove, that is, the horizontal part of the baffle is exactly above the wire feeding groove (i.e., the original position of the cover plate, close to the opening of the wire feeding groove). In the wire feeding direction (i.e., in a certain area in front of the second moving component), it has the effect of covering the original cover plate. This not only realizes the wire feeding from the outer wire feeding channel to the inner wire feeding channel, but also ensures that the reinforcing bars for bundling can only move within the channel formed by the wire feeding groove and the baffle, avoiding problems caused by tilting upwards or unevenness.

[0045] The design employs a chute and insert plate, with the opening and closing state of the wire feeding through-hole controlled by an insert plate control system. When the bundled rebar is fed from the hydraulic shear into the second fixed component (the wire feeding chute of the second fixed component), the insert plate is in the raised state, and the wire feeding through-hole is in the open state. Figure 11 The bundling steel bar is inserted into the second fixing component (the wire feeding groove of the second fixing component). After the wire is fed, the insert is in the lowered state, and the wire feeding through hole is in the closed state. Figure 10 This prepares the wire feeding process, preventing subsequent bundling steel bars from entering the second fixing component. During wire feeding, because the wire feeding through hole remains closed, the bundling steel bars (whether one or multiple) in the wire feeding groove, regardless of whether their ends are curled up, can avoid problems caused by upturned ends.

[0046] The third fixing component also employs a design combining a wire feeding groove and a cover plate. The opening and closing states of the wire feeding groove are controlled by a cover plate control system. During wire feeding, the cover plate of the third fixing component is closed, ensuring that the entire wire feeding groove is covered and sealed. This guarantees that the bundling rebar from the second fixing component can only move within the channel formed by the wire feeding groove and the cover plate (i.e., the inner wire feeding channel), preventing problems caused by the bundling rebar tilting upwards or being uneven. During wire lifting and bundling, the cover plate of the third fixing component is open, leaving the entire wire feeding groove uncovered. At this time, the left and right rotating arms of the twisting robot move upwards, thereby pulling the bundling rebar out of the wire feeding groove of the third fixing component as a whole. For internal wire feeding channels based on existing opening and closing guides (whether spring-based or spring-plate-based), when the left and right rotating arms of the twisting robot move upward to lift the bundled rebar, they need to overcome the resistance of the grippers (this resistance comes from the spring or spring). This resistance is precisely the force that allows the grippers to return to their original position (to restore the internal wire feeding channel). For a single bundled rebar, when overcoming the gripper resistance and disengaging from the internal wire feeding channel, a "wire jamming" situation may occur (i.e., the bundled rebar is stuck by the grippers and cannot completely disengage from the internal wire feeding channel), causing wire feeding defects. When the left and right rotating arms of the twisting robot move upward to lift two or more bundled rebars, the probability of "wire jamming" increases exponentially, even making continuous use impossible. With the design of the wire feeding groove and cover plate, when the left and right rotating arms of the twisting robot move upward to lift the bundled steel bars, the wire feeding groove is in an open state without a cover. No matter whether two or more bundled steel bars are being lifted, there will be no resistance. After lifting, the cover plate control system can be used to close the wire feeding groove again, thus solving the "wire jamming" problem and enabling continuous production.

[0047] Bundling machines that install and use the above-mentioned wire feeding mechanism (such as a top-entry rebar bundling machine, a fully automatic robotic rebar bundling machine, a rebar bundling machine based on a driven opening and closing clamping block device, and a rebar bundling machine using a lifting mechanism, as cited in this patent application) use the wire feeding mechanism of the present invention to replace the original "external wire feeding channel" and "internal wire feeding channel", and widen the through holes of the left and right clamping working surfaces as needed to simultaneously meet the conveying needs of one or more bundled rebars. The entire rebar bundling machine uses the wire feeding groove of the second fixed component as the main body of the external wire feeding channel, and the wire feeding groove of the third fixed component as the main body of the internal wire feeding channel. A second moving component pushes the rebars to be bundled to feed wire to the robotic arm and the internal wire feeding channel. This allows for wire feeding one rebar at a time or multiple rebars (e.g., two rebars) at a specific bundling location. After wire feeding, the first moving component drives the second moving component back to its original position near the hydraulic shear. Once the bundled rebars have been processed by the hydraulic shear and fallen into the wire feeding groove, further wire feeding can proceed. Throughout the wire feeding process, the opening and closing states of the internal and external wire feeding channels are controlled to avoid the defects of previous open wire feeding channels and open / closed guide tubes. For the entire rebar bundling machine, the original wire feeding mode is retained at the hydraulic shear and before the rebar falls into the wire feeding groove (such as the head of the next rebar touching the tail of the previous rebar after cutting). After the rebar falls into the wire feeding groove, the original wire feeding mode is abandoned and a push-type wire feeding is adopted. While ensuring the safety of wire feeding, the wire feeding efficiency is improved. This design not only provides convenience for new customers, but also takes into account the usage habits of old customers.

[0048] To solve the problem of bundling stacked profiles or steel pipes, a lifting mechanism is provided between several third fixing components in the internal wire feeding channel (preferably located in the center between two third fixing components). For details, see Chinese invention patent application "Lifting Mechanism and Rebar Bundling Machine Utilizing This Mechanism" (application date: December 17, 2022, application number: 2022233889558), or invention patent application "Lifting Mechanism and Rebar Bundling Machine Utilizing This Mechanism" (application date: December 17, 2022, application number: 202211627837X), or other methods such as... Figure 12The lifting mechanism shown includes a lifting cylinder. The entire lifting mechanism is mounted on the mounting base of the third fixed component of the baler using a mounting bracket. The lifting cylinder is fixedly positioned below the lower mounting plate. The output shaft of the lifting cylinder passes through the lower mounting plate and connects to the bottom end of the lifting core. Support columns are arranged around the lower mounting plate, and an upper mounting plate is mounted on the top of each support column. Observation and detection holes are provided on the support columns. The lifting core passes through the upper mounting plate and the mounting base, with its top end located between the inlet and outlet of the adjacent wire feeding groove of the third fixed component. A limiting device is fitted onto the lifting core and fits snugly against it (i.e., minimizing the distance between the limiting device and the lifting core without obstructing the vertical movement of the lifting core, thus preventing the lifting core from swaying around its perimeter, which could easily obstruct the lifting cylinder and its output shaft). The upper mounting plate is fixed to the lower surface of the mounting base using screws or bolts, and the limiting device is fixed to the upper surface of the mounting base. It should be noted that, as needed, a detection device can be installed on one side of the observation and detection hole to detect the amount of vertical movement of the core and transmit the detection signal back to the controller of the baler for adjustment or control. Similarly, detection devices can be installed in the design schemes of the wire feeding groove and cover plate, as well as the design schemes of the slide groove and insert plate, to detect the amount of movement of the cover plate and insert plate and transmit the detection signal back to the controller of the baler for adjustment or control.

[0049] In practical use, the best situation is that the lengths of the bundled steel bars located on the outer sides of the left and right clamping working surfaces are basically the same. At this time, the bundling effect of the twisting robot clamping and rotating is relatively good. Although the bundled steel bars obtained after straightening and hydraulic shearing are generally of consistent length according to the preset program control of the baling machine, and can meet the length requirements for baling, when two or more bundled steel bars are used for feeding and / or pushing, the multiple bundled steel bars after hydraulic shearing enter the outer wire feeding channel one after another. At this time, due to the friction between the multiple wires, the first wire protrudes relatively and is closer to the inner wire feeding channel in the wire feeding direction. When the second moving part is used to push the wire, the second moving part pushes the later wire (i.e., the bundled steel bar that enters the outer wire feeding channel later). At this time, multiple wires interact and generate friction in the wire feeding groove. Multiple wires are in the same channel. As the later wire moves forward, it causes the wire that was originally stationary in the channel to slide forward along with the wire that was originally stationary in the channel. The lengths of the bundled steel bars located on the outer side of the left and right clamping working surfaces are inconsistent, resulting in a poor baling effect. Figure 1 and 7 To explain, in Figure 1 The damping mechanism is not shown in the image. Figure 7 The rotating robotic arm is not shown in the image. Figure 7 for Figure 1The top view omits the projection of the twisting robot. After replacing the opening and closing guide with a third fixed component as the inner wire feeding channel, a damping mechanism is set on the outer side of the left clamping working surface (i.e. the outer side of the twisting robot). This mechanism includes two opposing partitions and a magnet set on the outer side of each partition. An extended wire feeding channel is formed between the partitions, serving as the through hole of the twisting robot and a horizontal extension of the inner wire feeding channel (i.e., the extended wire feeding channel, the through hole of the twisting robot, and the inner wire feeding channel are basically on the same horizontal plane). Taking the feeding of two bundled steel bars as an example, after being processed by hydraulic shears, the two bundled steel bars enter the outer feeding channel one after the other. At this time, due to the friction between the two wires, the first wire (i.e., the bundled steel bar that enters the outer feeding channel first) protrudes relatively more and is closer to the inner feeding channel in the feeding direction. When the second moving part is used to push the wire, the second moving part pushes the second wire (i.e., the bundled steel bar that enters the outer feeding channel later). At this time, the two wires interact with each other in the feeding groove, generating friction. Because the two wires are crowded together, the second wire slides forward along with the first wire in the inner and outer feeding channels. After the first wire enters the extended feeding channel formed between the partitions, due to the action of the magnet, the first wire is attracted by the magnet and then rests against the surface of the partition. At this point, the frictional resistance between this wire and the partition is greater than that between the two wires. The second moving part pushes the tail of the other wire in the wire feeding groove. At this time, this wire is not attracted by the magnet, so the wire feeding resistance is relatively smaller than that of the first wire, making the tails of the two wires level. At this point, the heads of the two wires are basically level and enter the extended wire feeding channel. Both are affected by the magnet, and their resistance is basically the same. Then, the second moving part pushes the tails of the two wires together to feed the wire. By using this wire feeding and / or pushing method, it is ensured that when feeding two or more wires, the head and tail of each wire can be basically level, and the length of the bundling steel bars located on the outer side of the left and right clamping working surfaces is basically the same, achieving a better bundling effect. Moreover, this damping mechanism has a simple and compact structure, which can adapt to the narrow space of the production site to the greatest extent.

[0050] The present invention has been described above by way of example. It should be noted that any simple modifications, alterations or other equivalent substitutions that can be made by those skilled in the art without creative effort without departing from the core of the present invention fall within the protection scope of the present invention.

Claims

1. An openable and closable wire feeding mechanism, characterized in that, It includes a first fixing component and a second fixing component positioned between the wire feeding channel and the hydraulic shear inside the steel baler, and a third fixing component positioned between the left and right rotating arms of the twisting manipulator of the steel baler, wherein: The first, second, and third fixing components are all arranged parallel to the wire feeding direction of the bundled steel bars; wire feeding grooves are provided in the second and third fixing components, and the wire feeding grooves of the second and third fixing components are opposite to each other in the wire feeding direction to form a continuous wire feeding channel; a controllable movable cover plate is provided above the wire feeding grooves of the second and third fixing components to realize the opening and closing control of the wire feeding grooves; A first movable component is provided on the first fixed component, which can move along the wire feeding direction of the bundling steel bar. One end of the second movable component is connected to the first movable component, and the other end is located in the wire feeding groove of the second fixed component. When the first movable component moves on the first fixed component, the first movable component drives the second movable component connected to it to move along the wire feeding direction as well. The other end of the second movable component located in the wire feeding groove of the second fixed component also moves along the wire feeding direction, thereby pushing the bundling steel bar located in the wire feeding groove into the inner wire feeding channel.

2. The openable wire feeding mechanism according to claim 1, characterized in that, The cover plate is connected to the cover plate control system, which controls the movement of the cover plate above the wire feeding groove to achieve the opening and closing control of the wire feeding groove.

3. The openable wire feeding mechanism according to claim 2, characterized in that, The cover plate control system consists of a cover plate control cylinder and a moving mechanism. The cylinder output shaft of the cover plate control cylinder is connected to the support transmission component of the moving mechanism. A cover plate is installed on the top of the support transmission component, and a moving component is installed at the bottom of the support transmission component. The moving component is mounted on a track.

4. The openable wire feeding mechanism according to any one of claims 1-3, characterized in that, The number of the second fixing component is one, and the number of the third fixing component is at least one.

5. The openable wire feeding mechanism according to claim 4, characterized in that, The number of the second fixing component is one, and the number of the third fixing component is 2-4.

6. The openable wire feeding mechanism according to any one of claims 1-3, characterized in that, The second moving part includes a horizontal part, a vertical part and a protrusion. One end of the horizontal part is fixedly connected to the first moving part so that the second moving part and the first moving part are connected as one unit, and the other end extends to the top of the wire feeding groove of the second fixed part. A vertical part is provided in a direction that is substantially perpendicular to the horizontal part and vertically downward. A protrusion is provided at the bottom of the vertical part. The shape of the vertical part and / or the protrusion matches the shape of the wire feeding groove of the second fixed part. A wire feeding through hole is provided in the vertical part of the second moving part.

7. The openable and closable wire feeding mechanism according to claim 6, characterized in that, In the structure of the second moving part, a slide groove is provided on the horizontal part connected to the vertical part, and a second connecting hole is provided on the horizontal part around the slide groove. The vertical part of the baffle is connected to the horizontal part of the baffle at approximately a 90-degree angle. The vertical part of the baffle is connected to the second connecting hole by screws or bolts. The insert is set in the slide groove and is connected to the insert control system so as to control the movement of the insert in the vertical direction through the insert control system.

8. The openable and closable wire feeding mechanism according to claim 7, characterized in that, The insert control system is an insert control cylinder. The cylinder output shaft of the insert control cylinder is connected to or in contact with the top of the insert. The vertical movement of the cylinder output shaft of the insert control cylinder drives the vertical movement of the insert, thereby controlling the opening and closing state of the wire feeding through hole at the bottom of the insert.

9. The openable wire feeding mechanism according to claim 7 or 8, characterized in that, The insert control cylinder, which serves as the insert control system, is mounted on the hydraulic shear or on the lateral part of the second moving component.

10. The openable wire feeding mechanism according to claim 7 or 8, characterized in that, A sliding hole is provided in the slide groove, and the slider of the insert is set in the sliding hole; the upper surface of the slide groove is flush with the upper surface of the vertical part and the protrusion.

11. The openable and closable wire feeding mechanism according to claim 9, characterized in that, A sliding hole is set in the slide groove, and the slider of the insert is set in the sliding hole.

12. The openable wire feeding mechanism according to claim 7 or 8, characterized in that, In the vertical direction, the distance from the horizontal part of the baffle to the bottom of the second moving part is roughly the same as the depth of the wire feeding groove of the second fixed part.

13. The openable and closable wire feeding mechanism according to claim 9, characterized in that, In the vertical direction, the distance from the horizontal part of the baffle to the bottom of the second moving part is roughly the same as the depth of the wire feeding groove of the second fixed part.

14. The openable and closable wire feeding mechanism according to claim 10, characterized in that, In the vertical direction, the distance from the horizontal part of the baffle to the bottom of the second moving part is roughly the same as the depth of the wire feeding groove of the second fixed part.

15. The openable and closable wire feeding mechanism according to claim 11, characterized in that, In the vertical direction, the distance from the horizontal part of the baffle to the bottom of the second moving part is roughly the same as the depth of the wire feeding groove of the second fixed part.

16. A steel baling machine, characterized in that, Install the openable wire feeding mechanism as described in any one of claims 1-15.

17. The steel baling machine according to claim 16, characterized in that, A lifting mechanism is provided between several third fixed components in the internal wire feeding channel.

18. The steel baling machine according to claim 17, characterized in that, A lifting mechanism is installed in the center between the two third fixed components.

19. The steel baling machine according to claim 17 or 18, characterized in that, The lifting mechanism, including a lifting cylinder, is mounted on the mounting base of the third fixed component of the baler using a mounting bracket. The lifting cylinder is fixedly located below the lower mounting plate. The output shaft of the lifting cylinder passes through the lower mounting plate and is connected to the bottom end of the lifting core. Support columns are set around the lower mounting plate, and an upper mounting plate is set at the top of the support columns. Observation and detection holes are set on the support columns. The lifting core passes through the upper mounting plate and the mounting base, and its top end is located between the inlet and outlet of the wire feeding groove of the adjacent third fixed component. The limiting device is fitted onto the lifting core and fits against the lifting core. The upper mounting plate is fixed to the lower surface of the mounting base and the limiting device is fixed to the upper surface of the mounting base by screws or bolts.

20. The steel baling machine according to any one of claims 16-18, characterized in that, A damping mechanism is provided on the outside of the twisting robot, including two opposing partitions and a magnet on the outside of each partition. An extended wire feeding channel is formed between the partitions, serving as a through hole for the twisting robot and a horizontal extension of the inner wire feeding channel.

21. The steel baling machine according to claim 19, characterized in that, A damping mechanism is provided on the outside of the twisting robot, including two opposing partitions and a magnet on the outside of each partition. An extended wire feeding channel is formed between the partitions, serving as a through hole for the twisting robot and a horizontal extension of the inner wire feeding channel.

Images