CN214566340U - Automatic winding device for Christmas tree colored ribbon and tree head machine - Google Patents

Abstract

The utility model belongs to the technical field of Christmas tree manufacturing equipment, in particular to an automatic Christmas tree colored ribbon winding device, which comprises a frame, a transmission mechanism and a winding mechanism; the winding mechanism is provided with a claw component which comprises a rotating disk, a finger cylinder, two connecting blocks and a claw component; the claw hand assembly comprises two symmetrically arranged bending clamp arms and a connecting block pivoted at the bending positions of the two bending clamp arms, and the two bending clamp arms are arranged at the same height with the rotating axis of the winding mechanism; or the claw hand component comprises two pairs of clamping blocks which are symmetrically arranged, and the height values of the two pairs of clamping blocks are between the radius and the diameter of the rotating disk, so that the automatic Christmas tree colored ribbon winding device is suitable for firmly clamping the Christmas trees of small-diameter bars and the Christmas trees of large-diameter bars to match the operation of winding and wrapping the colored ribbons. Still relate to a tree head machine, can be according to specific production conditions, required claw hand subassembly is in order to satisfy specific production demand in quick and convenient installation, reaches reduction in production cost's purpose.

Description

Automatic winding device for Christmas tree colored ribbon and tree head machine

Technical Field

The utility model belongs to the technical field of christmas tree manufacture equipment, especially, relate to a automatic wind of christmas tree colored ribbon device and adopt this automatic wind of christmas tree colored ribbon device's tree head machine.

Background

At present, in the branch semi-automatization production is tied up to christmas tree, wear the yarn through the manual work, and insert the iron bar winding pipe of coiling machine and clip through the holder, branch location centre gripping is in the fixed position of iron bar, when rotating around the pipe, through constantly carrying out the flexible operation for the winding pipe to the iron bar, realizes that the branch of fixing a position ties up on the iron bar, cuts off the yarn after tying up at last. Therefore, in the winding and binding process, the iron rod is repeatedly pushed and pulled to uniformly bind the fixed branches, and meanwhile, the diameters of the branches are continuously increased by binding the yarns.

At present, in order to improve the overall aesthetic degree of the Christmas tree, the binding part of the Christmas tree branch binding yarns needs to be wrapped by a colored ribbon. The traditional method is that after branches and leaves are bound by a tree head machine, a person winds and wraps the colored tapes at the yarn binding position by hands. The branch is moved and adjusted by hands to change the position of the colored ribbons and the density of the colored ribbons, the colored ribbons are cut off after the colored ribbons are cut off, and then the colored ribbons are knotted to prevent the colored ribbons from scattering, and the manual treatment mode has high working strength and low efficiency, and the branch can be uniformly bound by the force of skillfully holding the branch and the accuracy of moving the branch, so that the quality meeting the technological requirements is difficult. Although the automatic colored ribbon winding device is additionally arranged on the current commercially available tree head machine, the clamping branches mostly adopt an external clamping mode, the mode is only suitable for firm clamping of a small-diameter bar Christmas tree, but the mode is not suitable for firm clamping of a large-diameter bar Christmas tree, and if the clamping is not firm, the phenomenon that the colored ribbon is bound unevenly is bound inevitably caused, so that the overall appearance of the Christmas tree is influenced.

Therefore, it is an urgent problem to solve to modify the existing automatic color ribbon winding device to be suitable for the Christmas tree color ribbon binding with different rod diameters.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an automatic wind of colored ribbon of christmas tree aims at solving the colored ribbon automatic wind among the prior art and only is suitable for the colored ribbon winding of little stick footpath christmas tree and is not suitable for the colored ribbon winding technical problem of big stick footpath christmas tree.

In order to achieve the above object, an embodiment of the present invention provides an automatic winding device for christmas tree colored ribbon, which comprises a frame, a transmission mechanism disposed on the frame, and a winding mechanism disposed on the transmission mechanism.

Optionally, the winding mechanism is provided with a gripper member, the gripper member includes a rotary disk arranged on the winding mechanism, a finger cylinder arranged on the rotary disk, connecting blocks respectively arranged at finger ends of the finger cylinder, and gripper assemblies arranged on the two connecting blocks, the axis of the rotary disk coincides with the rotation axis of the winding mechanism, and the finger cylinder is eccentrically arranged on the rotary disk. This structural design passes through the cleft hand component realizes the parcel in order to cooperate the colored ribbon to the firm centre gripping of branch.

Optionally, the gripper assembly comprises two symmetrically arranged bending clamp arms and a positioning block pivoted at the bending positions of the two bending clamp arms, and the two bending clamp arms are arranged at the same height with the rotation axis of the winding mechanism; one end of each of the two bending clamping arms is respectively pivoted on the corresponding connecting block, and the other end of each bending clamping arm is in a free state to form a tensioning clamping opening. The structural design aims to tension the pipe orifice of the large-diameter rod of the Christmas tree through the tension adding port which can be opened and closed so as to firmly clamp branches.

Optionally, a guide plate is pivoted on the two bending clamp arms, and a guide rail plate matched with the guide plate is arranged on the finger cylinder. The structural design aims to ensure the smooth opening and closing of the two bending clamping arms.

Optionally, the gripper assembly includes two pairs of symmetrically disposed clamping blocks, the two pairs of clamping blocks are respectively disposed on the corresponding connecting blocks, and a height value of the two pairs of clamping blocks is between a radius and a diameter of the rotating disk. The structural design aims to integrally and firmly clamp the branches of the Christmas tree with the small-diameter bar stock through the two pairs of clamping blocks.

Optionally, the two clamping blocks are made of plastic materials, and anti-skid lines are arranged on the clamping surfaces of the clamping blocks.

The purpose of this structural design is to prevent the phenomenon that the branch slided with the pair of clamp splice in the coloured ribbon parcel process.

Optionally, the winding mechanism is disposed on a support frame of the conveying mechanism, a first motor and two bearing seats disposed on the support frame, and a rotating shaft penetrating through the two bearing seats, the rotating disc is coaxially disposed on the rotating shaft, and the first motor drives the rotating shaft to rotate through a belt or a chain, so as to drive the rotating disc to rotate synchronously.

Optionally, the supporting frame and the rotating shaft are respectively provided with a sensor or a sensing piece which are arranged in a matching manner. The purpose of this structural design is the number of turns of the tight branch parcel coloured ribbon of control clamp.

Optionally, the conveying mechanism includes a cross beam disposed on the rack, a cylindrical guide rail disposed on the cross beam, a support plate disposed on the cylindrical guide rail, and a conveying assembly disposed on the support plate. The structural design enables the conveying assembly to convey stably and reliably through the cylindrical guide rail.

Optionally, the conveying assembly includes a driven wheel and a second motor which are arranged on the frame, a driving wheel arranged on the second motor, a belt tensioned on the driving wheel and the driven wheel, and a belt clip arranged on the belt; the supporting plate is arranged on the belt clamp. The purpose of this structural design lies in driving the branch of centre gripping and making linear movement in order to cooperate the parcel of coloured ribbon.

Optionally, the device further comprises a material guiding mechanism which is arranged at the front end of the winding mechanism and is convenient for guiding the colored ribbons, wherein the material guiding mechanism comprises a travel switch arranged at the side of the pipe orifice of the bobbin of the tree head machine, two supporting plates and a material guiding pipe movably arranged on the two supporting plates; an arc-shaped hole is formed in the supporting plate close to the claw component, and the supporting plate penetrates through the material guide pipe and the arc-shaped hole through a fastening piece, so that the output end of the material guide pipe swings along the arc-shaped hole.

The embodiment of the utility model provides an above-mentioned one or more technical scheme in the automatic wind-up device of christmas tree colored ribbon has one of following technological effect at least:

1. adopt claw hand subassembly demountable installation in on the connecting block of finger cylinder finger end, wherein, claw hand subassembly can adopt the pin joint in two card arms of bending on the connecting block, through two the tensioning of can opening and shutting that card arm one end formed presss from both sides the mouth to the mouth of pipe of christmas tree major diameter bar rises and tightly in order to realize the firm centre gripping to the branch. Or the gripper assembly can adopt two clamping blocks respectively arranged on the connecting block, and the branches of the Christmas tree with the small-diameter bar stock are integrally and firmly clamped through the opening and closing of the two clamping blocks. The utility model discloses can choose for use suitably according to the christmas tree specification of difference the cleft hand subassembly makes the utility model discloses all be suitable for the christmas tree of minor diameter bar and the firm centre gripping of christmas tree of major diameter bar with the operation of cooperation to its colored ribbon winding parcel.

2. The material guide pipes are movably arranged on the two supporting plates, wherein the supporting plates close to the claw members are provided with arc-shaped holes, and the output ends of the material guide pipes swing along the arc-shaped holes after fasteners penetrate through the material guide pipes and the arc-shaped holes; the supporting plate far away from the claw member is pivoted with the material guide pipe, so that the material guide pipe penetrated with the color tapes swings synchronously along with the branch pushing process of the conveying mechanism in a reciprocating mode, and the situation that the color tapes are messy, inconvenient to wrap and even break is prevented.

Another object of the utility model is to provide a tree head machine aims at solving the automatic wind device suitability poor technical problem of colored ribbon of the tree head machine among the prior art.

In order to achieve the purpose, the embodiment of the utility model provides a tree head machine, which comprises a workbench, a winding binding device and a control box, wherein the winding binding device and the control box are arranged on the workbench;

optionally, this tree head machine still includes above-mentioned automatic wind of christmas tree colored ribbon, the frame is located the side of workstation, the axis of rotation of winding mechanism with the axis of rotation coincidence of wire winding tie device.

The embodiment of the utility model provides an above-mentioned one or more technical scheme in the tree head machine have one of following technological effect at least:

this tree head machine adopts automatic wind of christmas tree coloured ribbon device through selecting the satisfactory claw hand subassembly install extremely the finger end of finger cylinder makes its firm centre gripping that is suitable for christmas tree of minor diameter bar and christmas tree of major diameter bar with the cooperation to its coloured ribbon winding parcel's operation to make the producer can be according to specific production conditions, quick and convenient installation is required claw hand subassembly is in order to satisfy specific production demand, reaches reduction in production cost's purpose.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic structural diagram of a tree head machine according to an embodiment of the present invention;

fig. 2 is a schematic structural view of an automatic winding device for christmas tree colored ribbons according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a gripper member according to an embodiment of the present invention;

FIG. 4 is a partially enlarged view of FIG. 3 labeled B;

fig. 5 is a schematic structural diagram of a winding mechanism according to a first embodiment of the present invention;

fig. 6 is a schematic structural diagram of a conveying mechanism according to a first embodiment of the present invention;

FIG. 7 is an enlarged partial view of FIG. 2 labeled A;

fig. 8 is a schematic structural view of a gripper assembly according to a second embodiment of the present invention;

wherein, in the figures, the respective reference numerals:

10-workbench, 20-winding binding device, 30-control box, 40-Christmas tree colored belt automatic winding device, 41-frame, 42-transmission mechanism, 421-beam, 422-cylindrical guide rail, 423-supporting plate, 424-transmission component, 4241-driven wheel, 4242-second motor, 4243-driving wheel, 4244-belt, 4245-belt clamp, 43-winding mechanism, 431-supporting frame, 4311-inductor, 432-first motor, 433-bearing seat, 434-rotating shaft, 44-claw hand component, 441-rotating disk, 442-finger cylinder, 4421-connecting block, 4422-guide rail plate, 443-claw hand component, 4431-bending clamping arm, 4432-positioning block, 4433-guiding plate, 4434-pair of clamping blocks, 45-guide mechanism, 451-forming switch, 452-supporting plate, 4521-arc hole and 453-guide pipe.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary and intended to explain the embodiments of the present invention and are not to be construed as limiting the present invention.

In the description of the embodiments of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which is only for convenience in describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element so indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as fixed or detachable connections or as an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.

In an embodiment of the present invention, as shown in fig. 1-2, a tree head machine is provided, which comprises a worktable 10, a winding binding device 20 and a control box 30, which are arranged on the worktable; preferably, the head machine further comprises an automatic Christmas tree colored ribbon winding device 40. In this embodiment, the automatic winding device 40 for christmas tree colored ribbon includes a frame 41, a transmission mechanism 42 disposed on the frame, and a winding mechanism 43 disposed on the transmission mechanism. Specifically, the frame 41 is disposed at a side of the working table 10, and a rotation axis of the winding mechanism 43 coincides with a rotation axis of the wire binding device 20. It should be noted that, since the technical improvement point of the present invention is that the automatic winding device 40 for the christmas tree colored ribbon is provided, and the structures necessary for the winding binding device 20, the control box 30 and other tree-head machines are designed by known structures, it is not repeated herein.

As shown in fig. 3 and 4, the winding mechanism 43 is provided with a claw member 44. In this embodiment, the gripper member 44 includes a rotating plate 441 disposed on the winding mechanism 43, a finger cylinder 442 disposed on the rotating plate, connecting blocks 4421 disposed at finger ends of the finger cylinder, and gripper assemblies 443 disposed on the two connecting blocks. Specifically, the axis of the rotating disk 441 coincides with the axis of rotation of the winding mechanism 43, and the finger cylinder 442 is eccentrically disposed on the rotating disk 441; preferably, the claw assembly 443 can be detachably installed on the connecting block 4421, and specifically, it can be detachably installed by using a fastener or other fastening means, and the claw member 44 is additionally installed on the tree head machine to firmly clamp the branches with the branches and leaves, and the color band is wrapped on the branches with the branches and leaves by the rotation of the winding mechanism 43.

Further, the gripper assembly 443 includes two symmetrically arranged bending clamp arms 4431 and a positioning block 4432 pivotally connected to the bending positions of the two bending clamp arms, and both the two bending clamp arms 4431 are arranged at the same height as the rotation axis of the winding mechanism 43. In this embodiment, one end of each of the two bending arms 4431 is pivotally connected to the corresponding connecting block 4421, and the other end thereof is free to form a tensioning clamp. Specifically, the two bending clamp arms 4431 drive the two bending clamp arms 4431 to swing around the positioning block 4432 in the opening and closing process of the finger cylinder 442, so that the tensioning clamp opening is opened or closed, and in the colored belt wrapping operation, the tensioning clamp opening in the closed state is inserted into the pipe opening of the large-diameter bar for the large-diameter bar christmas tree, and then the tensioning pipe opening is opened immediately, so that the branches with the bound branches and leaves are firmly clamped.

Further, in order to ensure the smooth opening and closing of the two bending clamp arms 4431 and the smooth turning of the clamped branches, in this embodiment, a guide plate 4433 is pivoted on the two bending clamp arms 4431, and the finger cylinder 442 is provided with a guide rail plate 4422 matched with the guide plate, so that the opening and closing process of the tensioning clamp opening is stable and smooth under the guidance of the guide plate 4433 along the guide rail plate 4422 by the opening and closing power of the finger end of the finger cylinder 442.

As shown in fig. 5, the winding mechanism 43 includes a support frame 431 provided on the conveying mechanism 42, a first motor 432 and two bearing blocks 433 provided on the support frame, and a rotating shaft 434 passing through the two bearing blocks. In this embodiment, the rotating disc 441 is coaxially disposed on the rotating shaft 434, and the first motor 432 drives the rotating shaft 434 to rotate through a belt or a chain, so as to drive the rotating disc 441 to rotate synchronously, such that the claw member 44 mounted on the rotating disc 441 and clamping branches rotates therewith to implement a wrapping operation of a color ribbon.

Further, the supporting frame 431 and the rotating shaft 434 are respectively provided with a sensor 4311 or a sensing piece (not shown) which are arranged in a matching manner. In this embodiment, the induction sheet (not shown) is disposed on the rotating shaft 434, and during the rotation of the rotating shaft 434, the number of turns of the rotating shaft 434 can be obtained through the induction of the inductor 4311, so as to control the number of turns of the rotating shaft 434, and meet the requirements of the wrapping operation of color tapes of different products.

As shown in fig. 6, the conveying mechanism 42 includes a cross beam 421 disposed on the frame 41, a cylindrical guide 422 disposed on the cross beam, a support plate 423 disposed on the cylindrical guide, and a conveying assembly 424 disposed on the support plate. In this embodiment, the transmission assembly 424 includes a driven wheel 4241 and a second motor 4242 disposed on the frame 41, a driving wheel 4243 disposed on the second motor, a belt 4244 tensioned on the driving wheel 4243 and the driven wheel 4241, and a belt clamp 4245 disposed on the belt, and the support plate 423 is disposed on the belt clamp 4245. Specifically, the second motor 4242 drives the supporting plate 423 on the belt clamp 4245 to move back and forth through the belt 4244, and under the guiding action of the cylindrical guide rail 422, the conveying assembly 424 is conveyed stably and reliably, and the conveying mechanism 42 for stable transplanting enables the finger cylinder 442 clamping the branch with the branches and leaves bound to be pushed stably, so as to assist the colored belts to wrap the yarn bound position, so as to shield the yarns, and achieve the effect of beautifying the christmas tree.

As shown in fig. 7, the automatic winding device 40 for christmas tree colored ribbon further comprises a material guiding mechanism 45 disposed at the front end of the winding mechanism 43 and facilitating the material guiding of the colored ribbon, wherein the material guiding mechanism 45 comprises a travel switch 451, two support plates 452, and a material guiding pipe 453 movably disposed on the two support plates; an arc-shaped hole 4521 is formed in the supporting plate 452 close to the gripper member 44, and the feeding pipe 453 and the arc-shaped hole 4521 are penetrated through by a fastening member, so that the output end of the feeding pipe 453 swings along the arc-shaped hole 4521. In this embodiment, the supporting plate 452 close to the winding mechanism 43 is provided with the arc-shaped hole 4521, and the output end of the material guiding pipe 453 swings along the arc-shaped hole 4521 by passing a fastener through the material guiding pipe 453 and the arc-shaped hole 4521; the supporting plate 452 far away from the winding mechanism 43 is pivoted with the material guiding pipe 453, so that the material guiding pipe 453 penetrated with the color tapes swings synchronously along with the branch process of the conveying mechanism 42 pushing the branch with the branch leaves to and fro, and the situation that the color tapes are messy, inconvenient to wrap and even break is prevented.

In another embodiment of the present invention, as shown in fig. 8, the gripper assembly 443 of the tree head machine includes two pairs of symmetrically arranged clamping blocks 4434; preferably, the two clamping blocks 4434 are made of plastic. In this embodiment, the two pairs of clamping blocks 4434 are respectively disposed on the corresponding connecting blocks 4421, and the height of the two pairs of clamping blocks 4434 is between the radius and the diameter of the rotating disk 441. Specifically, the two pairs of clamping blocks 4434 are synchronously opened or closed in the opening and closing process of the finger cylinder 442, so that the branches of the small-diameter rod-shaped christmas tree can be integrally and firmly clamped. Further, in order to prevent the relative sliding between the branches and the paired clamping blocks 4434 during the wrapping process of the colored tapes, the anti-sliding effect is achieved by arranging anti-sliding lines on the paired clamping surfaces 4434.

The rest of this embodiment is the same as the first embodiment, and the unexplained features in this embodiment are explained by the first embodiment, which is not described herein again.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. An automatic winding device for Christmas tree colored ribbons comprises a frame, a transmission mechanism arranged on the frame and a winding mechanism arranged on the transmission mechanism; the method is characterized in that: the winding mechanism is provided with a claw component, the claw component comprises a rotating disk arranged on the winding mechanism, finger cylinders arranged on the rotating disk, connecting blocks respectively arranged at finger ends of the finger cylinders, and claw components arranged on the two connecting blocks, the axis of the rotating disk coincides with the rotation axis of the winding mechanism, and the finger cylinders are eccentrically arranged on the rotating disk.

2. The automatic Christmas tree colored ribbon winding device of claim 1, wherein: the claw hand assembly comprises two symmetrically arranged bending clamp arms and a positioning block pivoted at the bending positions of the two bending clamp arms, and the two bending clamp arms are arranged at the same height with the rotation axis of the winding mechanism; one end of each of the two bending clamping arms is respectively pivoted on the corresponding connecting block, and the other end of each bending clamping arm is in a free state to form a tensioning clamping opening.

3. The automatic Christmas tree colored ribbon winding device of claim 2, wherein: and a guide plate is pivoted on the two bending clamp arms, and a guide rail plate matched with the guide plate is arranged on the finger cylinder.

4. The automatic Christmas tree colored ribbon winding device of claim 1, wherein: the claw hand assembly comprises two pairs of clamping blocks which are symmetrically arranged, the two pairs of clamping blocks are respectively arranged on the corresponding connecting blocks, and the height value of the two pairs of clamping blocks is between the radius and the diameter of the rotating disc.

5. The automatic Christmas tree colored ribbon winding device of claim 4, wherein: the two clamping blocks are made of plastic materials, and anti-skid lines are arranged on the clamping surfaces of the clamping blocks.

6. The automatic Christmas tree colored ribbon winding device of claim 1, wherein: the winding mechanism is arranged on a support frame on the conveying mechanism, a first motor and two bearing seats which are arranged on the support frame, and a rotating shaft which penetrates through the two bearing seats, the rotating disc is coaxially arranged on the rotating shaft, and the first motor drives the rotating shaft to rotate through a belt or a chain to drive the rotating disc to synchronously rotate.

7. The automatic Christmas tree colored ribbon winding device of claim 6, wherein: the supporting frame and the rotating shaft are respectively provided with a sensor or a sensing sheet which are arranged in a matching way.

8. The automatic Christmas tree colored ribbon winding device of claim 1, wherein: the conveying mechanism comprises a cross beam arranged on the rack, a cylindrical guide rail arranged on the cross beam, a supporting plate arranged on the cylindrical guide rail and a conveying assembly arranged on the supporting plate;

the conveying assembly comprises a driven wheel and a second motor which are arranged on the rack, a driving wheel arranged on the second motor, a belt tensioned on the driving wheel and the driven wheel, and a belt clamp arranged on the belt; the supporting plate is arranged on the belt clamp.

9. The automatic Christmas tree colored ribbon winding device of claim 1, wherein: the color ribbon winding mechanism is characterized by also comprising a material guide mechanism which is arranged at the front end of the winding mechanism and is convenient for guiding the color ribbon, wherein the material guide mechanism comprises a travel switch, two supporting plates and a material guide pipe movably arranged on the two supporting plates; an arc-shaped hole is formed in the supporting plate close to the claw component, and the supporting plate penetrates through the material guide pipe and the arc-shaped hole through a fastening piece, so that the output end of the material guide pipe swings along the arc-shaped hole.

10. A tree head machine comprises a workbench, a winding binding device and a control box, wherein the winding binding device and the control box are arranged on the workbench; the method is characterized in that: the automatic Christmas tree colored ribbon winding device further comprises an automatic Christmas tree colored ribbon winding device as claimed in any one of claims 1-9, the frame is arranged on the side edge of the workbench, and the rotation axis of the winding mechanism is overlapped with the rotation axis of the winding and binding device.

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