Composite stirrup processing feeding device

Abstract

The present invention relates to a composite stirrup processing feeding device, comprising a base frame, a roller is provided on the base frame to feed the stirrup when rotating, a limiting unit is provided at one end of the base frame, the limiting unit comprises two limiting plates arranged opposite to each other, the two limiting plates are located above the roller and perpendicular to the roller to act on the stirrup from left and right through the opposite inner side surfaces thereof; a precise limiting mechanism is provided at the delivery end of the limiting plate, which comprises a lever action plate, the lever action plate is rotatably connected to the outer side of the limiting plate with the middle thereof as a turning point, an elastic element is compressed between one end of the lever action plate and the outer side surface of the limiting plate to provide an acting force to the other end, the other end extends out of the delivery end of the limiting plate and has an acting surface, the acting surface protrudes from the inner side surface of the limiting plate; a vertical slider is provided on the limiting plate which can slide vertically, and the lower surface of the vertical slider at least partially protrudes from the inner side surface of the limiting plate. The present invention can be used to feed square stirrups and make them be accurately delivered according to the designed posture and position.

Description

Technical Field

[0001] The invention belongs to the technical field of wire material processing or treatment, and in particular relates to a composite stirrup processing feeding device. Background Art

[0002] Composite stirrups often refer to a structural form in which a number of longitudinal or\ and transverse steel bars are added inside the square stirrups (hoops); the stirrups can be prefabricated and then directly connected to the main reinforcement of the component through binding or welding during the construction process to shorten the construction period.

[0003] At present, for the prefabrication of ordinary hoop, it can be manually bent and then welded, and there are also many automatic hoop bending equipment that can meet the needs of prefabricated hoop. However, if the construction requires a composite hoop with steel bars connected inside the hoop, the steel bars inside the hoop are basically assembled and welded manually, that is, the prefabricated hoop and the steel bars to be added to the hoop are manually placed or connected according to the designed position, and then welded to form a composite hoop. Such a manufacturing process is inefficient, and it is still necessary to consider automatic production as much as possible through mechanical equipment to improve efficiency and quality. First of all, a feeding device that can feed according to the designed position and posture is needed to feed the prefabricated hoop. The hoop itself is a steel bar bent part, and its molding consistency is relatively poor. There is still a certain degree of torsion in some parts. It is necessary to consider limiting it from all sides to better maintain the feeding posture so as to facilitate the connection of the automatic gripper of the welding device in the later process.

[0004] In addition, common similar conveying devices are usually roller combinations or conveyor belts, etc., and there are usually two limit plates (or a form of a matching device side wall) at the delivery end to limit the delivery position. The spacing between the two limit plates is usually larger than the corresponding width of the items being fed, and cannot be completely consistent with the width of the items being fed, otherwise it will affect the feeding efficiency and even jam the items being fed, but this will cause inconsistency in the delivery position of the items; when the items being fed pass through the limit plates, they will also slide and rub against the inner side of the limit plates, which may affect the items being fed and increase the feeding resistance; therefore, there are also two rows of vertical rollers instead of the inner side of the two limit plates. The rolling friction contact form is more beneficial to the feeding process and will not scratch the fed objects. However, in order to make the outer circumference of the vertical roller more effectively contact the fed objects, the vertical roller is usually only rotatably connected to the limit plate or other forms of base plate at the upper end, and the lower end is suspended. The lower surface of the vertical roller is flush with the upper surface of the roller or conveyor belt, which can ensure that the fed objects can effectively contact the vertical roller even if they are thinner structures. The disadvantage is that the stability of the vertical roller is poor, and the swing amount is large after long-term use, which affects the use effect. In addition, the problem of how to ensure the consistency of the object delivery position is also not solved. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a composite stirrup processing feeding device, which can be used to feed in square stirrups and accurately deliver them according to the designed posture and position, thereby avoiding the problem of poor use effect of existing similar conveying devices.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A composite stirrup processing feeding device comprises a base frame, on which a group of rotatable rollers are horizontally arranged so as to feed the stirrups placed thereon when rotating, a limiting unit is arranged at one end of the base frame so as to allow the stirrups to be fed out according to design requirements, the limiting unit comprises two oppositely arranged limiting plates, the two limiting plates are located above the rollers and are perpendicular to the rollers so as to act on the stirrups from the left and right through the opposite inner sides thereof; a lever-type precise limiting mechanism is arranged at the feeding end of the limiting plate, the lever-type precise limiting mechanism comprises a lever action plate, the lever action plate The lever plate is rotatably connected to the outer side of the limit plate with its middle as the turning point, one end of the lever action plate is the driving end, an elastic element is compressed between the driving end and the outer side surface of the limit plate to provide an action force to the other end, the other end of the lever action plate is the action end, a positioning portion is provided on the action end which can keep in contact with the outer side surface of the limit plate under the action force provided by the driving end, the free end of the action end extends out of the delivery end of the limit plate and has an action surface, the action surface protrudes from the inner side surface of the limit plate to act on the stirrup to achieve precise limit;

[0008] The limit plate is provided with a vertical sliding block which can slide vertically, and the lower surface of the vertical sliding block at least partially protrudes from the inner side surface of the limit plate so as to act on the stirrups from top to bottom during vertical sliding.

[0009] To further improve the above technical solution, a connecting lug is provided on the outer side surface of the limit plate, and the middle part of the lever action plate is connected to the connecting lug through a vertical rotating shaft; the positioning part is a boss provided on the side opposite to the outer side surface of the limit plate at the action end.

[0010] Furthermore, the free end of the action end extends out of the delivery end of the limit plate and continues to extend toward the inner side of the limit plate to be provided with two horizontal side wings, the two horizontal side wings are arranged horizontally opposite to each other up and down, and a vertical precision roller is rotatably connected between the two horizontal wings, and the outer circumferential surface of the precision roller forms the action surface.

[0011] Furthermore, an upper convex edge protruding inward is provided on the upper edge of the limit plate and a plurality of rotatable vertical rollers are connected through the upper convex edge, all vertical rollers are vertical and the upper ends are rotatably connected to the upper convex edge, all vertical rollers are spaced apart along the limit plate, the vertical rollers are located between two adjacent rollers, and a downward extension portion corresponding to the vertical rollers is provided on the lower edge of the extension portion and a lower convex edge protruding inward is provided on the lower edge of the extension portion, the upper surface of the lower convex edge is lower than the highest point of the outer circumference of the roller, and the lower end of the vertical roller is rotatably connected to the corresponding lower convex edge so as to act on the stirrups through the vertical rollers and ensure the stability of the vertical rollers; in the direction toward the inner side of the limit plate, the outer circumference of the precision roller protrudes beyond the outer circumference of the vertical roller.

[0012] Furthermore, the lower surface of the vertical slider is protruded with two vertical side wings, and the two vertical side wings are opposite to and parallel to the limit plate. A horizontal roller is rotatably connected between the two vertical side wings, and the side of the vertical side wing close to the limit plate away from the limit plate is lower than the highest point of the outer circumference of the vertical roller in this direction so that the stirrups can be acted on by the horizontal roller.

[0013] Furthermore, a clearance opening is provided on the upper convex edge and the vertical slider can vertically slide through the clearance opening, and the vertical slider is located between two adjacent vertical rollers.

[0014] Furthermore, the vertical slider is connected to the telescopic cylinder to drive its vertical movement through the telescopic cylinder. The telescopic cylinder is fixedly connected to the outer side of the limit plate and its telescopic rod is upward. The upper surface of the vertical slider is provided with a bent extension portion facing the outer side of the limit plate and is connected to the telescopic rod through the bent extension portion.

[0015] Furthermore, the two limit plates are further extended toward one end of the incoming material and are respectively provided with a guide plate, and the distance between the two guide plates gradually increases; the delivery end of the limit plate is extended with an extension arm and the free end of the extension arm is used as the delivery end of the limit plate, and the lever-type precise limit mechanism is arranged at the free end of the extension arm.

[0016] Furthermore, the two limit plates are connected to an adjusting mechanism and the spacing between the two limit plates can be adjusted by the adjusting mechanism; the adjusting mechanism includes a base plate and two drag plates located below the roller, the base plate is fixedly connected to the base frame, two slide rails are arranged in parallel and spaced apart on the base plate, the lower surface of the drag plate is provided with two slide grooves corresponding to the two slide rails and can be slidably mounted on the two slide rails of the base plate through the two slide grooves; the drag plate corresponds to the limit plate one by one, and a vertical plate is provided on the upper surface of the drag plate, the vertical plate passes upward between the two adjacent rollers and is connected to the limit plate so as to drive the limit plate to move and thereby adjust the spacing between the two limit plates.

[0017] Furthermore, the elastic element is a helical compression spring, and both ends of the elastic element fall into corresponding sinks on the outer sides of the driving end and the limiting plate.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The feeding device of the present invention roughly limits the position through the inner side surfaces of the two limit plates. The two action surfaces of the lever-type precise limit mechanism protrude from the inner side surfaces of the limit plates respectively, and can be used to compensate for the gap between the inner side surfaces of the two limit plates and the stirrups to achieve the effect of precise limiting. Because the action surface is a flexible contact surface provided by one end of the lever action plate, even if the spacing between the two action surfaces is smaller than the size of the stirrups, when the stirrups pass through, the elastic element can be compressed by the lever movement to achieve the effect of effectively giving way and maintaining the limiting force. While ensuring the effective limitation of the precise delivery position, the stirrups will not be stuck, thereby ensuring the effect of feeding and delivering.

[0020] 2. The feeding device of the present invention acts on the stirrups from the left and right directions through the inner sides of the two limit plates, and acts on the stirrups from top to bottom through the vertical slider, thereby achieving the effect of limiting the stirrups from all sides, so as to better ensure the feeding posture and the sending position, thereby facilitating the connection of the subsequent working procedures.

[0021] 3. The feeding device of the present invention contacts the stirrups by rolling friction, which is more beneficial to the feeding process and will not scratch the fed objects.

[0022] 4. The feeding device of the present invention cleverly utilizes the spacing between the rollers. The lower end of the vertical roller is connected to the convex edge of the downwardly extending extension of the limit plate. While ensuring that the vertical roller can effectively contact and act on the stirrups, the connection stability of the vertical roller is effectively improved, which can greatly extend the service life and always ensure the use effect.

[0023] 5. The feeding device of the present invention has an adjustable spacing between the limit plates as required, and can be used for hoops of various specifications, with good applicability. The structure is compact, clear and concise, and the entire driving motion structure is located below the roller, reducing the safety risk of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of a composite stirrup processing and feeding device of a specific embodiment;

[0025] Figure 2 For individual indication Figure 1 A schematic diagram of the structure of the limit unit and the adjustment mechanism;

[0026] Figure 3 for Figure 1 A partial enlarged view of

[0027] Figure 4 for Figure 2 Top view (partial);

[0028] Among them, the base frame 1, the roller 2, the limit plate 3, the upper convex edge 31, the clearance opening 311, the extension part 32, the lower convex edge 33, the extension arm 34, the vertical roller 4, the guide plate 5, the bottom plate 6, the slide rail 61, the screw 62, the screw seat 63, the drive motor 64, the drag plate 7, the slide groove 71, the vertical plate 72, the connecting nut 73, the vertical slider 8, the vertical wing 81, the horizontal roller 82, the telescopic cylinder 83, the bending extension part 84, the lever action plate 9, the driving end 91, the action end 92, the positioning part 93, the action surface 94, the elastic element 95, the rotary shaft 96, the horizontal wing 97, the precision roller 98, the telescopic positioning rod 100, and the in-position sensor 101. DETAILED DESCRIPTION

[0029] The specific implementation modes of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0030] See also Figure 1-4 The composite stirrup processing feeding device of the specific embodiment comprises a base frame 1, on which a group of rotatable rollers 2 are horizontally provided so as to feed stirrups (not shown in the figure) placed thereon during rotation, and a limiting unit is provided at one end of the base frame 1 so as to allow the stirrups to be fed out according to the design requirements, and the limiting unit comprises two limiting plates 3 arranged opposite to each other, the two limiting plates 3 are located above the rollers 2 and are perpendicular to the rollers 2 so as to act on the stirrups through their opposite inner sides; a lever-type precise limiting mechanism is provided at the feeding end of the limiting plate 3, and the lever-type precise limiting mechanism comprises a lever action plate 9, and the lever action plate 9 is provided with ... The middle part is a turning point and can be rotatably connected to the outer side of the limiting plate 3. One end of the lever action plate 9 is a driving end 91. An elastic element 95 is compressed between the driving end 91 and the outer side surface of the limiting plate 3 to provide an action force to the other end. The other end of the lever action plate 9 is an action end 92. A positioning portion 93 is provided on the action end 92, which can keep in contact with the outer side surface of the limiting plate 3 under the action force provided by the driving end 91. The free end of the action end 92 extends out of the delivery end of the limiting plate 3 and has an action surface 94. The action surface 94 protrudes from the inner side surface of the limiting plate 3 to act on the stirrups to achieve precise limiting.

[0031] A vertical sliding block 8 is vertically slidably disposed on the limiting plate 3 , and the lower surface of the vertical sliding block 8 at least partially protrudes from the inner side surface of the limiting plate 3 so as to act on the stirrups from top to bottom during vertical sliding.

[0032] The feeding device of the specific embodiment roughly limits the position where the stirrups are sent out by the inner side surfaces of the two limit plates 3, but the spacing between the two limit plates 3 cannot be equal to or less than the size of the stirrups, otherwise the stirrups will be stuck and the feeding will be affected. The use of the lever-type precise limiting mechanism makes the delivery end position of the two limit plates 3 have two action surfaces 94 protruding from their inner side surfaces respectively. During implementation, the spacing between the two action surfaces 94 is less than or equal to the size of the stirrups, which can compensate for the gap between the inner side surfaces of the two limit plates 3 and the stirrups, thereby achieving the effect of precise limiting, so that the stirrups can be better accurately sent out according to the designed position. The action surface 94 is a flexible contact surface provided by one end of the lever action plate 9. Even if the spacing between the two action surfaces 94 is less than the size of the stirrups, when the stirrups pass through, the elastic element 95 can be compressed by the lever movement to achieve the effect of effectively giving way and maintaining the limiting force. While ensuring the effective limitation of the precise delivery position, the stirrups will not be stuck, thereby ensuring the effect of feeding and sending out. The inner side surfaces of the two limit plates 3 act on the stirrups from the left and right directions, and the part of the lower surface of the vertical slider 8 protruding from the inner side surfaces of the limit plates 3 can act on the stirrups from top to bottom, thereby achieving the effect of limiting the stirrups from all sides, so as to better ensure the position and posture of the feeding, thereby facilitating the connection of the subsequent process. The vertical slider 8 adopts the method of sliding up and down because the limit plates 3 have been rigidly limited from the left and right directions. If the vertical slider 8 is also rigidly limited in the high and low directions, the lower surface of the vertical slider 8 is too low, that is, the distance from the roller 2 is close, and the stirrups may not be fed between the two limit plates 3 and below the vertical slider 8. Therefore, when in use, the vertical slider 8 is first located at the high point of the vertical sliding, and the stirrups are first fed between the two limit plates 3, and then the vertical slider 8 slides vertically downward to act on the stirrups from top to bottom, maintaining the feeding posture without affecting the feeding of the stirrups. During implementation, the timing of the movement of the vertical slider 8 can be mechanically periodic, or it can be automatically controlled by a PLC controller. During implementation, the specific use of the two limit plates 3 for limiting the delivery position of the stirrups can be determined in combination with the actual situation. If the manufacturing object is a single product, that is, a composite stirrup with unchanged specifications, then the two limit plates 3 can be fixedly set with a fixed spacing, and the guide plates 5 are further extended at the end facing the incoming material. The spacing between the two guide plates 5 is in the form of gradually expanding toward the end of the incoming material to ensure the guiding effect and increase the limiting range. If the specifications of the composite stirrups to be manufactured are inconsistent, then the spacing between the two limit plates 3 needs to be adjustable to improve applicability. The movement of the two limit plates 3 can be electrically controlled, and the delivery position of the stirrups fed in can be limited by the movement of the limit plates 3.

[0033] Among them, a connecting lug is provided on the outer side surface of the limit plate 3, and the middle part of the lever action plate 9 is connected to the connecting lug through a vertical rotating shaft 96; the positioning part 93 is a boss provided on the side opposite to the outer side surface of the action end 92 and the limit plate 3.

[0034] In this way, the connection structure is simple, the action and positioning are reliable, and the use effect is guaranteed.

[0035] Among them, the free end of the action end 92 extends out of the delivery end of the limit plate 3 and continues to extend to the inner side of the limit plate 3 to be provided with two horizontal side wings 97, and the two horizontal side wings 97 are arranged horizontally opposite to each other up and down, and a vertical precision roller 98 is rotatably connected between the two horizontal side wings 97, and the outer circumferential surface of the precision roller 98 forms the action surface 94.

[0036] In this way, the contact during precise limitation is changed from the sliding friction between the stirrup and the original action surface 94 to the rolling friction with the precision roller 98, which is more beneficial to the feeding process and will not scratch the objects being fed.

[0037] The limiting plate 3 is in the shape of a long strip, and an inwardly protruding upper convex edge 31 is provided on its upper edge, and a plurality of rotatable vertical rollers 4 are connected through the upper convex edge 31. All vertical rollers 4 are vertical and the upper ends are rotatably connected to the upper convex edge 31. All vertical rollers 4 are arranged at intervals along the limiting plate 3. The vertical rollers 4 are located between two adjacent roller barrels 2 so that the vertical rollers 4 and the roller barrels 2 are arranged alternately. The lower edge of the limiting plate 3 is provided with a downward extension portion 32 corresponding to the vertical rollers 4 one by one, and the extension portion 32 is also located between two adjacent roller barrels. 2, and an inwardly protruding lower convex edge 33 is provided at the lower edge of the extension portion 32, the upper surface of the lower convex edge 33 is lower than the highest point of the outer circumference of the drum 2 (i.e. the plane for feeding the stirrups), and the lower end of the vertical roller 4 is rotatably connected to the corresponding lower convex edge 33 so that the stirrups can be acted on by the vertical roller 4 and the stability of the vertical roller 4 can be ensured; in the direction toward the inner side of the limiting plate 3, the outer circumference of the precision roller 98 protrudes from the outer circumference of the vertical roller 4, that is, the highest point of the outer circumference of the precision roller 98 is higher than the highest point of the outer circumference of the vertical roller 4.

[0038] In this way, the spacing between the rollers 2 is cleverly utilized, and the lower end of the vertical roller 4 is connected to the convex edge of the extension portion 32 extending downward from the limit plate 3. While ensuring that the vertical roller 4 can effectively contact and act on the stirrups, the connection stability of the vertical roller 4 is effectively improved, which can greatly extend the service life and always ensure the use effect.

[0039] Among them, the lower surface of the vertical slider 8 is protruded with two vertical side wings 81, and the two vertical side wings 81 are opposite to and parallel to the limit plate 3. A horizontal roller 82 is rotatably connected between the two vertical side wings 81. In the direction away from the limit plate 3, the corresponding side surface of the vertical side wing 81 close to the limit plate 3 is lower than the highest point of the outer circumference of the vertical roller 4 (that is, the plane acting on the stirrup) so that the stirrup can be acted on by the horizontal roller 82.

[0040] In this way, the vertical restriction is changed from the sliding friction between the lower surface of the vertical slider 8 and the passing stirrup to the rolling friction with the horizontal roller 82, which is more favorable for the feeding process and will not scratch the fed objects. In this embodiment, two horizontal rollers 82 are arranged between the two vertical side wings 81 of a vertical slider 8. The two horizontal rollers 82 are of the same height and are arranged at intervals along the feeding direction to improve the effect of the horizontal rollers 82.

[0041] The upper convex edge 31 is provided with a clearance opening 311 , and the vertical slider 8 can vertically slide through the clearance opening 311 . The vertical slider 8 is located between two adjacent vertical rollers 4 .

[0042] In this way, the clearance opening 311 can be used as an auxiliary guide rail for the vertical sliding of the vertical slider 8, which is beneficial to improving the structural strength; more importantly, the surface of the vertical slider 8 facing the limit plate 3 is closer to the limit plate 3, and the inner wing plate can naturally extend downward and ensure that it is lower than the highest point of the outer circumference of the vertical roller 4 without extending inward, which is simpler in structure.

[0043] Among them, the vertical slider 8 is connected to the telescopic cylinder 83 to drive its vertical movement through the telescopic cylinder 83, the telescopic cylinder 83 is fixedly connected to the outer side surface of the limit plate 3 and its telescopic rod is upward, and the upper surface of the vertical slider 8 is provided with a bent extension portion 8432 facing the outer side surface of the limit plate 3 and is connected to the telescopic rod through the bent extension portion 8432, and the bent extension portion 8432 is higher than the upper surface of the limit plate 3.

[0044] In this way, a feasible drive connection method is provided, which has simple connection and reliable force transmission.

[0045] Wherein, at least one vertical sliding block 8 is respectively provided at two ends of the limiting plate 3 .

[0046] In this way, the limiting effect on the posture of the stirrups can be improved. Theoretically, a vertical slider 8 can be set between adjacent vertical rollers 4; when there is only one vertical slider 8 on a limit plate 3, it is preferably set at the delivery end of the limit plate 3; in this embodiment, two vertical sliders 8 (including corresponding telescopic cylinders 83) are set on a limit plate 3, and they are preferably respectively set at the two ends of the limit plate 3 to ensure the limiting effect on the posture of the stirrups.

[0047] The two limit plates 3 are respectively extended toward one end of the incoming material to form a guide plate 5 , and the distance between the two guide plates 5 is gradually enlarged to ensure the guiding effect and increase the guiding action range.

[0048] In this way, no matter whether the limiting plate 3 is movable or not, the guide plate 5 can always play the role of expanding the range of incoming materials that can be received, making it more convenient to place the incoming materials and having lower requirements for the placement of the incoming materials.

[0049] The two limit plates 3 are connected to an adjustment mechanism and the distance between the two limit plates 3 can be adjusted by the adjustment mechanism.

[0050] In this way, the applicability is improved and it can be used to feed in and limit the feeding out of square stirrups of more specifications.

[0051] Among them, the adjustment mechanism includes a base plate 6 and two drag plates 7 located below the roller 2, the base plate 6 is fixedly connected to the base frame 1, and two slide rails 61 are arranged on the base plate 6 in parallel and at intervals, and the lower surface of the drag plate 7 is provided with two slide grooves 71 corresponding to the two slide rails 61 and can be slidably mounted on the two slide rails 61 of the base plate 6 through the two slide grooves 71; the drag plate 7 corresponds to the limit plate 3 one by one, and the upper surface of the drag plate 7 is provided with a vertical plate 72, and the vertical plate 72 passes upward from between the two adjacent rollers 2 and is connected to the limit plate 3 so as to drive the limit plate 3 to move, thereby adjusting the distance between the two limit plates 3. The base plate 6 is also provided with a screw 62 parallel to the slide rail 61 and the screw 62 is located between the two slide rails 61. The screw 62 is composed of two external thread segments with opposite rotation directions. The two carriages 7 are respectively connected to the screw 62 through connecting nuts 73 corresponding to the two external thread segments with opposite rotation directions. The connecting nuts 73 are protrudingly connected to the lower surface of the carriage 7. The two ends of the screw 62 are respectively rotatably connected to the screw seat 63. The screw seat 63 is fixedly connected to the base plate 6. A driving motor 64 is connected to either end of the screw 62. During implementation, a servo motor is used, which is fixedly connected to the outer side of the corresponding screw seat 63. Its driving shaft is connected to the screw 62 or connected through a coupling. The servo motor can be connected to a PLC controller so as to automatically adjust the spacing between the two limit plates 3 in combination with input data, which is more convenient to use.

[0052] In this way, the adjustment mechanism is arranged by further utilizing the gap of the roller drum 2, and the entire driving and motion structure is located below the roller drum 2, which has a clear and concise appearance and reduces safety risks. The screw 62 is driven to rotate by the driving motor 64, and the two limit plates 3 are driven to approach or move away at the same time, so that the middle positions of stirrups of different specifications when being sent out are fixed and the same, which is convenient for the connection design of the subsequent working procedures.

[0053] There are a plurality of vertical plates 72 on the drag plate 7 and they are spaced apart along the limiting plate 3 . The upper ends of the vertical plates 72 are connected to the outer side surfaces of the limiting plate 3 by bolts.

[0054] In this way, the connection reliability is improved, the connection is more convenient, and the driving performance is good; in this embodiment, three vertical plates 72 are arranged at intervals on a drag plate 7 and connected to the corresponding limit plates 3.

[0055] The elastic element 95 is a helical compression spring, both ends of which fall into corresponding sinks on the outer surfaces of the driving end 91 and the limiting plate 3 .

[0056] In this way, the installation is reliable, the force provided is stable, and the use effect is guaranteed.

[0057] In this embodiment, an extension arm 34 is extended from the delivery end of the limit plate 3 and the free end of the extension arm 34 serves as the delivery end of the limit plate 3 . The lever-type precise limit mechanism is arranged at the free end of the extension arm 34 . During use, the subsequent corresponding to the feeding device is usually an automatic mechanical gripper for welding, which horizontally receives and pulls out the stirrups for welding. If the lever-type precise limiting mechanism is close to the last roller 2, it is not convenient for the connection of subsequent processes, and the lever-type precise limiting mechanism is far away from the subsequent welding position, which is not conducive to the maintenance of the precise limiting position. That is, in the process of the automatic mechanical gripper pulling the stirrups out to the welding position, the stirrups may shift again and affect the accuracy of the welding position. Therefore, an extension arm 34 is used to lengthen the delivery end of the limit plate 3. The structure of the extension arm 34 is the same as the cross-section of the limit plate 3 at the position where the lower convex edge 33 is provided, and the vertical rollers 4 are also arranged at intervals. The lever action plate 9 is connected to the connecting lug on the outer side of the extension arm 34 through the rotating shaft 96, and the use effect of precise limitation remains unchanged. After increasing the distance between the lever-type precise limiting mechanism and the last roller 2, the lever-type precise limiting mechanism can be closer to the subsequent welding position, and even during welding, the rear part of the stirrup is still under the restriction of the lever-type precise limiting mechanism, which can better ensure the accuracy of the welding position.

[0058] During manufacturing, the limit plate 3 and the extension arm 34 can be cut into rectangular plates and welded (the limit plate 3 and the extension arm 34 can also be an integral structure), and fixed convex edges are welded on the upper and lower edges respectively, and then the yielding parts corresponding to each roller barrel 2 are processed by material removal machining, and the correspondingly spaced "extension parts 32" and "lower convex edges 33" are formed, and then the yielding openings 311 are processed. This manufacturing method is relatively simple and has better consistency. Then, a thin-walled guide plate 5 is welded at an angle at the corresponding end, and a connecting lug is welded at the other end to process the sinking platform into which the spiral compression spring falls. The yielding part of this embodiment is an arc-shaped yielding part with a diameter larger than the roller barrel 2. When implemented, it can also be a rectangular yielding part without limitation.

[0059] In this embodiment, Figure 1 At the middle right position, the motor connected to the base frame 1 is a driving motor 64 for driving each roller 2, which can be connected to each roller 2 by a toothed synchronous belt (not shown in the figure), which is a prior art and will not be described in detail.

[0060] In this embodiment, a position sensor 101 and a positioning mechanism are also provided at the delivery end of the base frame 1. The positioning mechanism includes a vertical telescopic positioning rod 100 that can be moved vertically, which is driven by a cylinder fixed to the base frame 1. The telescopic positioning rod 100 is located outside the roller 2 and in the middle of the two limit plates 3 (that is, the distance between the telescopic positioning rod 100 and the two limit plates 3 is equal). The position sensor 101 is provided between the telescopic positioning rod 100 and the last roller 2 at the delivery end. The position sensor 101 is connected to a PLC controller (not shown in the figure), which is connected to a drive motor 64 and is also connected to the telescopic cylinder 83 and the drive cylinder of the telescopic positioning rod 100 through corresponding air pressure regulating valves. The telescopic cylinder 83 can be controlled according to the feeding position information of the stirrup detected by the position sensor 101, thereby controlling the timing of the vertical slider 8 acting on the stirrup from top to bottom. Control is performed by a PLC controller to improve the degree of automation, ensure the use effect, and make the operation simpler. The sensor can be a mechanically triggered form or a laser irradiation sensing form displacement sensor, without limitation.

[0061] For ease of understanding, the movement process is further introduced. The PLC controller controls the cylinder to drive the telescopic positioning rod 100 to extend, and its upper end is higher than the highest point of the roller 2 to block and position the stirrups being fed in. The PLC controller controls the drive motor 64 to adjust the distance between the two limit plates 3 to the required distance size. The PLC controller controls the telescopic cylinder 83 to lift the vertical slider 8 to the highest point to complete the preparation work. The stirrups are placed on the roller 2, fed in and introduced into the vertical rollers 4 between the two limit plates 3 through the guide plate 5 to be restricted. After being fed in beyond the last roller 2, the in-position sensor 101 is triggered. The PLC controller controls the telescopic cylinder 83 to lower the vertical slider 8, and limits the stirrups through the horizontal rollers 82. The stirrups are forced to stop after contacting the telescopic positioning rod 100 (the drum 2 continues to rotate), and are in a state of being restricted on all sides to ensure their posture. After the stirrups are horizontally supported by the automatic mechanical gripper for welding in the subsequent process, the PLC controller controls the cylinder to drive the telescopic positioning rod 100 to lower, and its upper end is lower than the drum 2 and no longer blocks the stirrups. The mechanical gripper pulls out the stirrups horizontally and then welds them. During the process, the stirrups pass through the subsequent vertical rollers 4 and the precision rollers 98, so that the delivery position is more accurate.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A composite stirrup processing feeding device, comprising a base frame, a group of rotatable rollers are horizontally arranged on the base frame so as to feed the stirrups placed thereon when rotating, a limiting unit is arranged at one end of the base frame so as to allow the stirrups to be fed out according to design requirements, the limiting unit comprises two limiting plates arranged opposite to each other, the two limiting plates are located above the rollers and are perpendicular to the rollers so as to act on the stirrups from the left and right through the opposite inner sides thereof; characterized in that: The delivery end of the limiting plate is provided with a lever-type precise limiting mechanism, the lever-type precise limiting mechanism comprises a lever action plate, the lever action plate is rotatably connected to the outer side of the limiting plate with its middle as a turning point, one end of the lever action plate is a driving end, an elastic element is compressed between the driving end and the outer side surface of the limiting plate to provide an action force to the other end, the other end of the lever action plate is an action end, a positioning portion is provided on the action end which can keep in contact with the outer side surface of the limiting plate under the action force provided by the driving end, the free end of the action end extends out of the delivery end of the limiting plate and has an action surface, the action surface protrudes from the inner side surface of the limiting plate to act on the stirrup to achieve precise limiting; The limit plate is provided with a vertical sliding block which can slide vertically, and the lower surface of the vertical sliding block at least partially protrudes from the inner side surface of the limit plate so as to act on the stirrups from top to bottom during vertical sliding; The outer side surface of the limit plate is provided with a connecting lug, and the middle part of the lever action plate is connected to the connecting lug through a vertical rotary shaft; the positioning part is a boss provided on a side of the action end opposite to the outer side surface of the limit plate; The free end of the action end extends out of the delivery end of the limit plate and continues to extend toward the inner side of the limit plate to be provided with two horizontal side wings, the two horizontal side wings are arranged horizontally opposite to each other up and down, and a vertical precision roller is rotatably connected between the two horizontal wings, and the outer circumferential surface of the precision roller forms the action surface.

2. The composite stirrup processing and feeding device according to claim 1, characterized in that: The upper edge of the limit plate is provided with an upper convex edge protruding inwardly and a plurality of rotatable vertical rollers are connected through the upper convex edge, all vertical rollers are vertical and the upper ends are rotatably connected to the upper convex edge, all vertical rollers are arranged at intervals along the limit plate, the vertical rollers are located between two adjacent rollers, the lower edge of the limit plate is provided with a downward extension portion corresponding to the vertical rollers one by one and an inwardly protruding lower convex edge is provided on the lower edge of the extension portion, the upper surface of the lower convex edge is lower than the highest point of the outer circumference of the roller, the lower end of the vertical roller is rotatably connected to the corresponding lower convex edge so as to act on the stirrups through the vertical rollers and ensure the stability of the vertical rollers; in the direction toward the inner side of the limit plate, the outer circumference of the precision roller protrudes beyond the outer circumference of the vertical roller.

3. The composite stirrup processing feeding device according to claim 2 is characterized in that: The lower surface of the vertical slider is protruded with two vertical side wings, which are opposite to and parallel to the limit plate, and a horizontal roller is rotatably connected between the two vertical side wings. The side of the vertical side wing close to the limit plate away from the limit plate is lower than the highest point of the outer circumference of the vertical roller in this direction so that the stirrups can be acted on by the horizontal roller.

4. The composite stirrup processing and feeding device according to claim 3 is characterized in that: A clearance opening is provided on the upper convex edge and the vertical sliding block can vertically slide through the clearance opening, and the vertical sliding block is located between two adjacent vertical rollers.

5. The composite stirrup processing and feeding device according to claim 4, characterized in that: The vertical slider is connected to the telescopic cylinder to drive its vertical movement through the telescopic cylinder. The telescopic cylinder is fixedly connected to the outer side of the limit plate and its telescopic rod is upward. The upper surface of the vertical slider is provided with a bent extension portion facing the outer side of the limit plate and is connected to the telescopic rod through the bent extension portion.

6. The composite stirrup processing and feeding device according to any one of claims 1 to 5, characterized in that: The two limit plates are further extended toward one end of the incoming material to be provided with a guide plate, and the distance between the two guide plates gradually increases; an extension arm is extended from the delivery end of the limit plate and the free end of the extension arm is used as the delivery end of the limit plate, and the lever-type precise limit mechanism is arranged at the free end of the extension arm.

7. The composite stirrup processing and feeding device according to any one of claims 1 to 5, characterized in that: The two limit plates are connected to an adjusting mechanism and the spacing between the two limit plates can be adjusted by the adjusting mechanism; the adjusting mechanism comprises a bottom plate and two drag plates located below the roller, the bottom plate is fixedly connected to the base frame, two parallel and spaced slide rails are arranged on the bottom plate, two slide grooves corresponding to the two slide rails are arranged on the lower surface of the drag plate and can be slidably mounted on the two slide rails of the bottom plate through the two slide grooves; the drag plate corresponds to the limit plates one by one, and a vertical plate is arranged on the upper surface of the drag plate, the vertical plate passes upward between two adjacent rollers and is connected to the limit plate so as to drive the limit plate to move and thereby adjust the spacing between the two limit plates.

8. The composite stirrup processing and feeding device according to claim 7, characterized in that: The elastic element is a spiral compression spring, and both ends of the elastic element fall into the corresponding sinks on the outer sides of the driving end and the limiting plate.

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