KR101959282B1 - Apparatus of connecting bolt and nut - Google Patents

Abstract

Disclosed is an apparatus for connecting a bolt and a nut, comprising: a bolt supply unit aligning a bolt to transport the same; a nut supply unit aligning a nut to transport the same; a fastening unit receiving the bolt and the nut from the bolt supply unit and the nut supply unit so as to fasten the nut to the bolt; and a pressurizing unit pressurizing a lower head of the bolt to which the nut is fastened by the fastening unit.

Description

[0001] APPARATUS OF CONNECTING BOLT AND NUT [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bolt and nut coupling device, and more particularly, to a bolt and nut coupling device for fastening a bolt to a bolt and a nut.

Generally, bolts and nuts are most widely used as fastening members for fastening parts joined to various mechanical devices such as aircraft, automobiles, and the like.

Bolts and nuts are manufactured at the manufacturing site and then supplied to the industrial site after they are fastened with bolts and nuts and then assembled.

However, in the past, when the operator directly fastened the bolt and the nut, the defect rate increases due to the fatigue and carelessness of the operator during the long working time, resulting in a deterioration in the productivity. In order to fasten the bolt and the nut, There is a problem that the labor cost is raised.

The present invention provides a bolt and nut coupling device that allows bolts and nuts to be aligned and fed one by one and to automatically engage the bolts and nuts.

In order to solve the above-mentioned problems, a bolt and nut coupling apparatus includes a bolt supply unit for aligning and transporting bolts, a nut supply unit for aligning and transporting the bolts, a bolt feed unit for feeding the bolts and the nut from the bolt supply unit and the nut supply unit, And a pressing portion for pressing the lower head of the bolt fastened with the nut by the fastening portion.

Meanwhile, the bolt supply part provides a storage space for the bolt, moves the bolt to be stored to the fastening part, and the nut supply part provides a storage space for the nut, and is housed in a spiral- And a vibration is generated at one side of the collecting part to apply vibration to the nut stored in the collecting part so that the nut moves along the helical member And a nut transferring portion for connecting the collecting portion and the coupling portion, wherein the coupling portion is formed to be rotatable in one direction in the shape of a circular plate, and the bolt can be inserted along the outer peripheral surface The bolt receiving grooves are formed at regular intervals, and the bolt And a bolt plate having a shape corresponding to at least a part of an outer circumferential surface of a circular plate shape in a rotating direction from a side where the bolt supply unit is provided is provided so as to be inserted into the bolt receiving groove, A bolt rotating part for moving the bolt inserted in the groove in the rotational direction while being held by the bolt plate, and a bolt rotating part for rotating the bolt rotating part in the same direction and speed as the bolt rotating part, And a punching member for receiving the nut from the nut supply part and moving the bolt upward while rotating in a fastening direction to fasten the nut to the bolt inserted in the bolt receiving groove, The rotating part and the bolt rotating part And a stopper portion provided so as to abut the outer circumferential surface of the bolt rotating portion and dropping the bolt inserted into the bolt receiving groove into the pressing portion, wherein the pressing portion includes a bolt for moving the bolt dropped by the stopper portion one by one, And a coupling bolt receiving portion provided on one side of the coupling bolt conveying portion and receiving bolts from the coupling bolt conveying portion and receiving bolts supplied from the coupling bolt conveying portion on the outer peripheral surface thereof, When the coupling bolt receiving groove is disposed vertically downwardly by rotation of the coupling bolt rotating portion, the coupling bolt receiving groove is lowered to be inserted into the coupling bolt receiving groove, And a pressing member for pressing the lower head of the bolt .

According to the present invention, the bolts and nuts are automatically aligned in one direction and automatically fed, and the bolts and nuts are automatically engaged, thereby improving the productivity and accuracy of the process.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a part of a bolt and nut coupling apparatus of the present invention. FIG.
FIG. 2 is an enlarged view of the nut supply unit shown in FIG. 1. FIG.
FIG. 3 is an enlarged view of the fastening portion shown in FIG. 1. FIG.
FIG. 4 is an enlarged view of the pressing portion shown in FIG. 1. FIG.
5 is a view showing a vibration damping unit.
Figure 6 is a view showing the first plate of Figure 5;
7 is a view showing a load distribution unit of the present invention.

The following detailed description of the invention refers to the accompanying drawings, which illustrate, by way of illustration, specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that the various embodiments of the present invention are different, but need not be mutually exclusive. For example, certain features, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention in connection with an embodiment. It is also to be understood that the position or arrangement of the individual components within each disclosed embodiment may be varied without departing from the spirit and scope of the invention. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present invention is to be limited only by the appended claims, along with the full scope of equivalents to which such claims are entitled, if properly explained. In the drawings, like reference numerals refer to the same or similar functions throughout the several views.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the drawings.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a part of a bolt and nut coupling apparatus of the present invention. FIG.

Referring to FIG. 1, the bolt and nut coupling apparatus 1000 of the present invention may include a bolt supply unit 100, a nut supply unit 200, a fastening unit 400, and a pushing unit 500.

The bolt and nut coupling apparatus 1000 of the present invention can fasten the nut 20 to the bolt 10. The bolt 10 is transferred to the fastening part 400 by the bolt supply part 100 and the nut 20 can be transferred to the fastening part 400 and fastened by the nut supply part 200. [ The bolt 10 having the nut fastened by the fastening part 400 can be transferred to the pressing part 500 and the lower head can be deformed by the pressing part 500. [

The configuration of the bolt supply part 100, the nut supply part 200, the fastening part 400 and the pressing part 500 may be provided on the worktable 1.

The bolt and nut coupling apparatus 1000 of the present invention automatically feeds the bolts 10 and the nuts 20 and tightens the bolts 10 and the nuts 20 to increase the productivity and accuracy of the process .

Hereinafter, with reference to FIG. 2 and subsequent drawings, the configuration of the bolt and nut coupling apparatus 1000 of the present invention shown in FIG. 1 will be described in detail.

FIG. 2 is an enlarged view of the nut supply unit shown in FIG. 1. FIG.

Referring to FIG. 2, the nut supply unit 200 includes a collecting unit 210, a vibration generating unit 230, and a nut transferring unit 270 so that the nuts 20 are aligned one by one and supplied to the fastening unit 400 do.

The bolt supply unit 100 shown in FIG. 1 has the same configuration as the nut supply unit 200 and can supply the bolt 10 to the fastening unit 400 according to the same mechanism as the nut supply unit 200. Therefore, a detailed description of the bolt supply unit 100 is replaced with a description of the nut supply unit 200 to be described later.

The collecting part 210 is a space in which a plurality of nuts 20 are accommodated and a helical member 215 can be formed so that a plurality of housed nuts 20 can be moved to a nut conveying part 270 described later.

The helical member 215 may be formed along the inner circumferential surface of the collecting part 210 and may form a track for moving the nut 20 in a spiral upward direction. At this time, the spiral member 215 may be formed with a remnant portion. By this remaining portion of the nut, the nut 20 will not be released from the helical member 215 upon upward movement along the helical member 215, and will be able to move one by one and align sequentially.

The vibration generating unit 230 may generate vibration on one side of the collecting unit 210. [ The vibration generating unit 230 may be configured to move the nut 20 along the helical member 215 by applying vibration with the nut 20 formed on one side of the collecting unit 210 and stored in the collecting unit 210 . For this operation, the vibration generating unit 230 may include driving means such as a motor.

The nut transferring unit 270 is configured to connect the collecting unit 210 and the coupling unit 400 to be described later and is configured to transfer the nut 20 from the collecting unit 210 to the coupling unit 400 one by one . One side of the nut transferring part 270 may be connected to the helical member 215 and the other side of the nut transferring part 270 may be connected to the coupling part 400. The nut transferring part 270 can transfer the nut 20 upwardly moved along the helical member 215 to the fastening part 400.

At this time, the collecting part 210 is positioned above the fastening part 400 and the nut conveying part 270 fastens the collecting part 210 and the fastening part 400 from the collecting part 210 by diagonally connecting them. The nut 20 can be smoothly transferred to the portion 400.

The nut feeder 200 can supply the nuts 20 to the fastening part 400 by aligning the nuts 20 to be fastened to the bolts 10 one by one. For example, a plurality of nuts 20 may be housed in the collecting part 210 in an un-aligned state. The plurality of nuts 20 can move along the helical member 215 when the vibrations generated from the vibration generating unit 230 are transmitted to the plurality of nuts 20. [ At this time, the plurality of nuts 20 are spirally moved upward in the state of being caught in the remnants of the helical member 215, and the nuts 20 which are not caught in the remnants of the nuts 20 fall down to the collecting part 210, The plurality of nuts 20 can be aligned one by one and move upwardly in a helical manner along the helical member 215. The nut 20 moved to the end of the helical member 215 may fall along the nut conveying portion 270 and be transferred to the fastening portion 400. [

FIG. 3 is an enlarged view of the fastening portion shown in FIG. 1. FIG.

3, the fastening part 400 includes a bolt rotation part 410, a nut rotation part 430 and a stopper part 450 so that the nut 20 is fastened to the bolt 10.

The bolt rotation part 410 may be provided with a bolt supply part 100 at one side thereof to receive the bolt 10. The bolt rotation part 410 has a circular plate shape having a predetermined thickness. Bolt receiving grooves 415, which can be inserted and coupled with the bolts 10, may be formed at regular intervals along the outer circumferential surface. At this time, the bolt supply part 100 may be provided at one side of the bolt rotation part 410 so as to transfer the bolt 10 to the bolt receiving groove 415. A bolt plate 418 having a shape corresponding to 1/4 length of at least a part of the outer circumferential surface of the bolt rotating part 410 in the rotation direction of the bolt rotating part 410 from one side where the bolt supplying part 100 is provided . The bolt 10 is inserted into the bolt receiving groove 415 by the bolt receiving groove 415 and the bolt plate 418 and can be transferred along the rotating direction of the bolt rotating part 410.

For example, when the bolt receiving groove 415 is located at a position where the bolt supply unit 100 and the bolt rotation unit 410 are in contact with each other by the rotation of the bolt rotation unit 410, May be inserted into the bolt receiving groove 415. [ The bolt 10 is brought into contact with the bolt plate 418 in a state of being inserted into the bolt receiving groove 415. As a result, the bolt receiving groove 415 is brought into contact with the bolt receiving groove 415, It can be put in a state where it is stuck in the second housing 415. In this state, when the bolt rotation part 410 rotates, the bolt 10 is transferred along the rotation direction of the bolt rotation part 410 in a state where it is caught in the bolt receiving groove 415 by the bolt plate 418, The nut 20 may be coupled to the bolt 10 by a nut rotation unit 430 described later.

The nut rotating part 430 is provided at one side with a nut supply part 200 to receive the nut 20. The nut rotation unit 430 may be disposed below the bolt rotation unit 410. The nut rotation unit 430 corresponds to the bolt rotation unit 410 and can rotate at the same speed in the same direction as the bolt rotation unit 410. The nut rotating part 430 has a circular plate shape having a predetermined thickness and a punching member 437 for moving the nut 20 upward while penetrating the plate may be formed at regular intervals. The spacing of the punching members 437 may be the same as the spacing of the bolt receiving grooves 415 formed in the bolt turning portion 410 so that the bolt receiving grooves 415 have. The nut feeder 200 may be provided at one side of the nut rotator 430 to feed the nut 20 to the punching member 437. Here, the nut supply unit 200 may include a predetermined air pump or the like so that the nut 20 is inserted and seated on the upper surface of the punching member 437. The nut 20 can be fed along the rotating direction of the nut rotating part 430 while being inserted into the punching member 437 and seated.

The punching member 437 can be raised and lowered while being rotated in the fastening direction for fastening the nut 20. It is obvious that a driving means such as a motor is provided for this purpose, and although not shown in the drawings, the scope of the right should not be limited. The punching member 437 comes into contact with the bolt receiving groove 415 when the nut 20 is lifted and lowered while being rotated in the fastening direction in a state where the nut 20 is inserted and seated. At this time, if the bolt 10 is inserted into the bolt receiving groove 415, the nut 20 may be fastened to the bolt 10. That is, the bolt 10 can be engaged with the nut 20 while being transported while being in contact with the bolt plate 418.

The stopper portion 450 may be provided on the other side of the bolt turning portion 410. The stopper portion 450 may be disposed to abut the outer circumferential surface of the bolt rotation portion 410. Specifically, the stopper portion 450 may be disposed along the outer circumferential surface of the bolt rotation portion 410, And may be arranged to abut the outer circumferential surface of the bolt rotation part 410 at a distance apart position. At this time, a pressing portion 500 is disposed at one side of the fastening portion 400. The stopper portion 450 is located at a position corresponding to the pressing portion 500, specifically, at a position above the pressing portion 500, 410, respectively. The bolt 10 having the nut 20 fastened thereto by the stopper portion 450 is prevented from being conveyed along the rotational direction of the bolt turning portion 410 and is moved from the bolt receiving groove 415 to the pressing portion 500, . ≪ / RTI >

For example, the bolt 10 can be fastened to the nut 20 while being transported along the direction of rotation of the bolt rotation part 410 while being in contact with the bolt plate 418, At least a part of the stopper portion 450 is contacted to the end of the length of the bolt receiving groove 415 so that the transfer of the bolt receiving portion 415 along the rotational direction of the bolt turning portion 410 is restricted.

Thus, the fastening part 400 allows the nut 20 to be automatically fastened to the bolt 10, and the plurality of bolts 10 and the nut 20 can be simultaneously fastened.

FIG. 4 is an enlarged view of the pressing portion shown in FIG. 1. FIG.

4, the pressing portion 500 includes an engaging bolt transferring portion 510, an engaging bolt rotating portion 530, and a pressing member 550 so that the lower head of the bolt 15 to which the nut is engaged can be machined have. The pressing portion 500 may press the lower head of the bolt 15 to which the nut is coupled to deform it flatly, or may perform engraving on the lower head.

The coupling bolt transfer part 510 can be formed so that the bolts 15 to which the nuts falling from the coupling part 400 are aligned and transferred one by one. One side of the coupling bolt transfer part 510 is positioned below the stopper part 450 as described above and the other side of the coupling bolt transfer part 510 can be connected to the coupling bolt rotation part 530 described later. At this time, the coupling bolt rotation part 530 is positioned below the coupling part 400, and the coupling bolt transfer part 510 connects the coupling part 400 and the coupling bolt rotation part 530 diagonally to the coupling part 400 The bolt 15 to which the nut is coupled from the coupling bolt rotation part 530 can be smoothly transferred.

The coupling bolt transfer portion 510 may include an engagement bolt alignment portion 515. The coupling bolt transfer unit 510 can transfer the bolt 15 coupled with the nut dropped from the coupling unit 400 in one direction, specifically, the lower head is arranged on the upper side. The engaging bolt aligning portion 515 can be aligned in one direction as the bolt 15 coupled with the nut conveyed along the engaging bolt conveying portion 510 including the engaging weight is inclined by the hooking weight.

The coupling bolt rotation part 530 is rotatably provided and is provided at one side of the coupling bolt transfer part 510 to receive a bolt 15 to which a nut is coupled. The coupling bolt rotation part 530 is formed in a circular plate shape having a predetermined thickness and a bolt 15 to which a nut is coupled along an outer peripheral surface thereof and an engagement bolt receiving groove 531 to be inserted and coupled can be formed at regular intervals have. At this time, the coupling bolt transfer part 510 may be provided at one side of the coupling bolt rotation part 530 so as to transfer the bolt 15 to which the nut is coupled to the coupling bolt receiving groove 531. The upper surface of the coupling bolt rotating portion 530 may provide a nut seat 533. That is, the bolt 15 to which the nut is inserted inserted into the coupling bolt receiving groove 531 may be inserted into the coupling bolt receiving groove 531 while being spread over the nut receiving seat 533.

For example, when the coupling bolt receiving groove 531 is positioned at a position where the coupling bolt rotation portion 530 and the coupling bolt transfer portion 510 are in contact with each other by rotation of the coupling bolt rotation portion 530, The bolts 15 to which the supplied nuts are coupled can be inserted into the coupling bolt receiving grooves 531. In this state, when the coupling bolt rotation part 530 is rotated, the bolt 15 to which the nut is coupled can be transferred along the rotation direction of the coupling bolt rotation part 530 while being inserted into the coupling bolt receiving groove 531 .

A pressing member 550 may be disposed on the upper portion of the coupling bolt rotating portion 530. The pressing member 550 may be provided at a corresponding position vertically above the coupling bolt receiving groove 531. When the coupling bolt receiving groove 531 is disposed vertically downwardly by the rotation of the coupling bolt rotating portion 530, the pressing member 550 is inserted into the coupling bolt receiving groove 531, 15). Here, it is obvious that driving means such as a motor for supporting the upward and downward movement of the pressing member 550 is provided.

As described above, the pressing portion 500 receives the bolt 15 coupled with the nut from the fastening portion 400 and can process the lower head of the bolt 15 to which the nut is coupled by aligning in one direction.

Meanwhile, although not shown in FIG. 1, the bolt and nut coupling apparatus 1000 of the present invention may further include a vibration damping unit. The vibration damping unit may include a bolt supply unit 100, a nut supply unit 200, a fastening unit 400, and a pressing unit 500. The vibration damping unit may include a bolt supply unit 100, a nut supply unit 200, And the pressing portion 500 and the work table are connected to each other to absorb vibration generated between the respective components. In the present invention, it is possible to solve the problems including the vibration damping part and the damage or detachment of the respective structures by vibration.

5 is a view showing a vibration damping unit.

5, the vibration damping portion 330 includes a support portion 331, a vibration absorption portion 332, a connection plate 333, an extension plate 334, and an installation portion 335. [

The support portion 331 includes a first plate 331-1, a second plate 331-2, a third plate 331-3, and a fourth plate 331-4 ).

At this time, the first plate 331-1, the second plate 331-2, the third plate 331-3, and the fourth plate 331-4 are spaced apart from each other such that their rear ends are opposed to each other, And the vibration absorbing portion 332 is installed in the spaced space to absorb the vibration transmitted to each plate.

The vibration absorbing portion 332 is provided between each plate of the support portion 331 and the other plate to absorb vibration.

In one embodiment, the vibration absorbing portion 332 may be formed by means of an elastic material such as a spring or rubber, which absorbs the impact. However, if the material absorbs the impact, Will be possible.

The connecting plate 333 is disposed between the upper portion of the first plate 331-1 and the upper portion of the second plate 331-2 and between the front end of the second plate 331-2 and the upper end of the third plate 331-3 Between the front ends, between the lower part of the third plate 331-3 and the lower part of the fourth plate 331-4 and between the front end of the fourth plate 331-4 and the front end of the first plate 331-1 The first plate 331-1, the second plate 331-2, the third plate 331-3, and the fourth plate 331-4 in a " + " shape Connect.

In other words, the connection plate 333 can form an overall appearance by interconnecting the upper, lower, or front ends of the respective plates, as well as, by rotating each connection portion, By adjusting the angle of connection, vibration or shock can be absorbed more efficiently.

That is, when the first plate 331-1, the second plate 331-2, the third plate 331-3, and the fourth plate 331-4 are fixed to each other by the connection plate 333 If a critical vibration or a critical impact is applied, the coupling plate 333, which is connected to each plate, can not sustain the vibration or the critical impact, so that the original function can not be performed .

Accordingly, the connecting plate 333 according to the present invention includes the first plate 331-1, the second plate 331-2, the third plate 331-3, and the fourth plate 331-4 By connecting to a certain degree of movement, it is possible to maintain the engagement more efficiently in vibration or impact than in the case described above.

The extension plate 334 includes an upper portion (i.e., an upper blade) and a front end (i.e., a front end blade) of the first plate 331-1, an upper portion and a front end of the second plate 331-2, -3), and the mounting portion 335 for each plate in the upper or lower direction from the lower end and the front end of the fourth plate 331-4.

In one embodiment, the extension plate 334 can be pivoted by connecting the upper or lower portion to the pivot shaft formed at the lower portion of the mounting portion 335. [

The mounting portion 335 is connected to the upper or lower portion of the upper frame 310 so that the upper or lower portions of the two extending plates 334 extending from the respective plates are opposed to and rotatable with respect to each other, (E.g., using fastening means such as screw bolts, welding or rivets).

Figure 6 is a view showing the first plate of Figure 5;

6, the first plate 331-1 includes a plate body 331-11, two first upper engagement grooves 331-12, a second upper engagement groove 331-13, two And includes first and second shear locking grooves 331-14 and 331-15.

The plate main body 331-11 is formed of a plate of an " a " shape, and two first upper fastening grooves 331-12 and a second upper fastening groove 331-13 are formed on the upper blade, Two first shear locking grooves 331-14 and a second shear locking groove 331-15 are formed on the wing.

The first upper engagement groove 331-12 is formed on the upper blade of the plate body 331-11 formed in the upward direction and is connected to the front end of the connection plate 333 so as to be rotatable.

The second upper engagement groove 331-13 is formed between the first upper engagement grooves 331-12 so that the lower portion of the extension plate 334 is rotatably connected.

The first shear engagement grooves 331-14 are formed on the front end of the plate body 331-11 formed in the front end direction and are connected to each other so that the upper portion of the connection plate 333 is rotatable.

The second shear engagement grooves 331-15 are formed between the first shear engagement grooves 331-14 and are connected so that the lower portion of the extension plate 334 can rotate.

In one embodiment, the extension plate 334 is provided with a second upper engagement groove 331, 332 so as to be slidable in the vertical direction in the second upper engagement groove 331-13 or the second shear engagement groove 331-15. And a vertical sliding groove 341 can be formed at a lower portion connected to the second front end locking groove 331-15 or the second front end locking groove 331-15.

The connection plate 333 may also have a sliding groove having the same structure as the sliding groove 341 of the extension plate 334 described above.

The first plate 331-1 having the above-described structure is mounted on the second plate 331-2, the third plate 331-3, or the fourth plate 331-4, The description of the second plate 331-2, the third plate 331-3 or the fourth plate 331-4 will be omitted.

Also, although not shown in FIG. 1, the bolt and nut coupling apparatus 1000 of the present invention may further include a load distribution unit. The load distributing portion is provided at a portion where the bolt supply portion 100, the nut supply portion 200, the coupling portion 400 and the pressing portion 500 are connected to the work table 1 to distribute the load applied between the respective components, Can be absorbed.

7 is a view showing a load distribution unit of the present invention.

7, the load dispersing unit 700 includes a ball housing 710 having a hollow portion 715 therein, a plurality of small balls 720 for supporting the hollow portion 715, And a ground ball 740 having a plane 745.

The load distributor 700 disperses and partially absorbs the load applied from the outside, and can transmit a load q smaller than the load P externally applied.

The load dispersing unit 700 disperses the load applied from the outside of the ball housing 710 inside the ball housing 710 and finally transmits the load smaller than the load externally applied to the ball housing 710 . The load applied from the outside of the ball housing 710 is dispersed by the plurality of small balls 720 for support and the ground ball 740 located in the hollow portion 715. A part of the load is applied to the ball housing 710 And the remaining load can be transmitted to the outside of the ball housing 710. [

The ball housing 710 may be fixed to the work table 1 and may have a hollow portion 715 in which a plurality of small balls for support 720 and a ground ball 740 are received.

The ball housing 710 is made of steel, concrete, wood, plastic, or the like having a certain strength to support a load dispersed by a plurality of small balls 720 for support and a ground ball 740 ≪ / RTI >

The shape of the ball housing 710 may be various shapes such as a polygonal shape and a spherical shape. However, the hollow portion 715 may be formed in a spherical shape corresponding to the shape of the ground ball 740.

The plurality of small balls for supporting 720 and the ground ball 740 may be accommodated in the hollow portion 715 and may be formed in a spherical shape.

The plurality of small balls 720 for support can be regularly arranged and received so as to be in contact with each other along the outer circumferential surface of the hollow portion 715. The ground ball 740 may be received in the hollow portion 715 in a state of being put on a plurality of small balls for support 720 and may be held in point contact with the plurality of small balls for support 720.

The plurality of small balls for support 720 and the ground balls 740 are regularly arranged so that the outer circumferences thereof are in contact with each other. By the contact points between the plurality of small balls for support 720 and the ground balls 740, The external load can be dispersed while pressing the hollow portion 715, i.e., the inner wall of the ball housing 710, finally disposed at the outermost position. At this time, in this embodiment, the plurality of small balls for support 720 are regularly arranged and the ground balls 740 are arranged on the plurality of small balls for support 720, The number of contact points between the ball 720 and the ground ball 740 can be increased and the load transmission can be regularized to enhance the load transfer effect between the balls. In addition, since the ground ball 740 is supported in a point contact state by a plurality of small balls 720 for support, wear can be minimized.

The plurality of small balls for support 720 and the ground ball 740 may be made of a material having strength capable of withstanding a load due to a contact point between the small balls 720 and the ground ball 740 and may be made of iron, have.

Meanwhile, the ground ball 740 may have a ground plane 745 on the top. The ground plane 745 may be attached to the bolt feeder 100, the nut feeder 200, the coupling part 400 or the pressing part 500 in a face-to-face contact with the workbench 1. 7, the load dispersing unit 700 further includes a fixed lid for fixing the ground ball 740 received in the hollow portion 715, and the bolt supply unit 100, the nut supply unit 200 The coupling part 400 and the pressing part 500 and the work table 1 are connected to each other.

The load distributing unit 700 disperses the load applied to the work table 1 from the bolt supply unit 100, the nut supply unit 200, the coupling unit 400 and the pressing unit 500, absorbs some of the load, . Therefore, the load distribution unit 700 can ensure the safety of the support of the work table 1, and can prevent problems such as deformation of various structures due to high load.

At least a part of the structure of the coupling device 1000 of the bolt and nut according to the present invention may be realized by a plastic sheet manufactured by the method of manufacturing a plastic sheet according to an embodiment of the present invention as follows.

A method of manufacturing a plastic sheet according to an embodiment of the present invention includes the steps of: 100 parts by weight of a polyethylene terephthalate (PET) resin; 2 to 4 parts by weight of a polyurethane dispersant; and polyethylene dioxythiophene 0.1 to 0.2 part by weight of polystyrene sulfonate, 3 to 5 parts by weight of polystyrolsulfonic acid, N-methyl-2-pyrrolidone, 0.1 to 0.1 part by weight of triethyl amine 0.1 ~ 0.3 part by weight, 42 ~ 45 parts by weight of isopropyl alcohol and 50 ~ 52 parts by weight of water to prepare a mixed composition; A second step of preheating the mixed composition; A third step of removing moisture from the preheated mixed composition; A fourth step of heating the moisture-removed mixed composition; A fifth step of removing foreign substances from the heated mixed composition; A sixth step of preparing a plastic sheet by stretching the mixed composition from which foreign matters have been removed; And a seventh step of applying silicone to the plastic sheet, followed by drying. The present invention can produce a plastic sheet excellent in moldability and durability by mixing various additives with conventional PET resin and preheating, dehumidifying, heating and cooling.

In the first step, as the mixing step of the raw materials, polyethylene terephthalate (PET) resin is used as a base resin, and a polyurethane dispersant, polyethylene dioxythiophene polystyrene sulfonate, Is a step of mixing poly (styrol sulfonic acid), N-methyl-2-pyrrolidone, triethyl amine, isopropyl alcohol and water.

The PET resin is a base resin, which has excellent thermal stability and high crystallinity, can be recycled, and is manufactured in a master batch form. The polyurethane dispersant functions to improve the compatibility with other components. Polyethylene dioxythiophene polystyrene sulfonate, polystyrolsulfonic acid, N-methyl-2-pyrrolidone, and triethyl amine. Function as an antistatic agent. Since the plastic sheet for producing the plastic container is generally an electrical insulator, static electricity is generated by friction charging, and if it is seriously damaged by discharge or electric conduction, it may lead to an accident such as explosion or fire, so it is preferable to add a charging agent . Isopropyl alcohol functions as an antifogging agent. The anti-fogging agent can inhibit the formation of water droplets due to the water vapor which may be generated when a plastic container is used to store a fruit or the like by using a plastic sheet.

For example, the above-mentioned raw materials may be used in an amount of 2 to 4 parts by weight of a polyurethane dispersant, 0.1 to 10 parts by weight of polyethylene dioxythiophene polystyrene sulfonate (hereinafter referred to as " polyethylene dioxythiophene polystyrene sulfonate ") of 100 parts by weight of polyethylene terephthalate , 0.4 to 0.6 parts by weight of polystyrolsulfonic acid, 3 to 5 parts by weight of N-methyl-2-pyrrolidone, 3 to 5 parts by weight of triethylamine, 0.1 to 0.3 parts by weight, 42 to 45 parts by weight of isopropyl alcohol and 50 to 52 parts by weight of water. When added beyond the above-mentioned range, various problems may occur. Particularly, in the case of an antistatic agent, when mixed over the respective ranges, the plastic surface to be produced may be sticky, the sealing property and printability may be deteriorated, and in the case of white plastic, yellowing may occur.

In addition, the first step may further incorporate various additional ingredients into the raw materials to enhance the functionality of the plastic sheet.

As an example, a boron-based binder may be further mixed. The boron (B) type binder is used for bonding the respective components, and the boron type binder is preferably mixed in 2 to 10 parts by weight with respect to 100 parts by weight of the PET resin. When the content of the boron-based binder is less than 2 parts by weight, the raw material or the like can not be effectively bonded, and when the content of the boron-based binder exceeds 70 parts by weight, it is uneconomical.

As an example, garlic extract may be further mixed. The garlic extract is a natural adhesive component, which together with the boron-based binder functions as a binder which improves the compatibility with other constituents. The garlic extract is peeled and crushed, and 2 to 3 parts by weight of water is added per 1 part by weight of garlic. After heating at 80 to 100 캜 for 5 hours or more, the liquid component is extracted and filtered, The liquid component can be prepared by concentrating at 55 to 60 占 폚. The garlic extract is preferably mixed in 5 to 10 parts by weight with respect to 100 parts by weight of the PET resin. When the content of the garlic extract is less than 5 parts by weight, the raw material components may not be properly entangled so that the surface of the plastic sheet may not be uniformly formed. When the amount of the garlic extract is more than 10 parts by weight, There is a risk of degradation.

As an example, the apatite powder may be further mixed. The apatite powder functions as a filler and can maintain the shape of the plastic sheet, thereby improving workability and improving strength and corrosion resistance. Apatite is an inorganic substance present in bone. It is important to use a small amount of particles, a high residual amount of carbonate, and low crystallinity for use as a filler. Preferably, the size of the apatite granules is 200 to 400 탆. For this purpose, it is important to carry out the sintering process at 500 to 700 ° C. When sintering at less than 500 ° C, there is a disadvantage in that the desired granule size and crystallinity can not be obtained. When sintering exceeds 700 ° C, there is a disadvantage in that the remaining amount of carbonate is low and the crystallinity becomes too high. The apatite powder is preferably mixed in 20 to 30 parts by weight with respect to 100 parts by weight of the PET resin.

When the content of the apatite powder is less than 20 parts by weight, there is a disadvantage in that the adhesive strength is lowered, and when it exceeds 30 parts by weight, the impact resistance is weakened.

As an example, cork powder can be further mixed. Cork powder can improve the durability of the plastic sheet with apatite powder. The cork powder can be prepared by removing the shell of oak oak and then crushing it. For the cork powder to be mixed with the PET resin and the like, it is preferable to use fine pulverized particles which have been passed through a mesh of 400 mesh or more. The cork powder is preferably mixed in 15 to 25 parts by weight with respect to 100 parts by weight of the PET resin. When the cork powder is less than 15 parts by weight, improvement in durability is insignificant. When the cork powder is more than 25 parts by weight, porosity may be formed in the production of plastics, and durability may be lowered.

As an example, the Sorghum extract can be further blended. Sorghum extract not only acts as an antimicrobial agent but also inhibits the yellowing of white plastic sheets. Rumex crispus is a genus of Rumex spp. It is a perennial herb that grows well in moist places of various places. It uses the lysoon as a food in the private sector. In the oriental medicine, it is called a yosei, and it is categorized into various diseases including cystitis, gallbladder disease, bile secretion disorder, spleen disease, It is used as an adjuvant treatment for tumors and cancer. Sorghum extract extracted from Sora japonica has antimicrobial and antioxidant effects against various microorganisms. When mixed with a small amount of sulfur, it has an excellent effect on skin itching. It has been reported that saponins, tannins, flavonoids, essential oils and chrysophanol, and anthraquinone derivatives such as emodin, are known to be useful components of the present invention. The extracts of Sorae Seedlings were washed in 80% (v / v) methanol for 3 days as an extraction solvent by washing the collected Sorghum wells and then drying them in the shade and dividing them into the ground part (except the root) and the root part (root part) After soaking, the extract is filtered with a membrane filter (pore size 0.5 mu m) to separate the solid, and the methanol extract can be prepared by concentrating the extract at 50 DEG C using a rotary evaporator. It is preferable that the Sorghum extract is mixed in 3 to 8 parts by weight with respect to 100 parts by weight of the PET resin. When the content of the extract is less than 3 parts by weight, the antimicrobial activity is insufficient in preventing yellowing, and when it is more than 8 parts by weight, it is uneconomical.

The second step is a step of preheating the mixed composition, and heat is applied to the mixed material so that the materials are stably mixed.

Preferably, the third step is a dehumidifying step of removing moisture present in the preheated mixed composition, and the desiccation is preferably performed in a temperature range of 150 to 180 ° C. If the amount is less than or more than the above range, the dehumidification may not be sufficiently performed, or the durability of the plastic may be adversely affected.

The fourth step is a step of heating the mixed composition from which the moisture has been removed, and the heating temperature is preferably controlled to 260 to 270 ° C in order to melt and maintain the mixed composition.

The fifth step is a step of removing the foreign substance of the heated mixed composition, and it is possible to remove the foreign matter in the inside of the mixed composition by passing it through a screen in the form of a mesh.

The sixth step is a step of cooling the mixed composition from which the foreign substances have been removed to prepare a plastic sheet, which is then drawn in two stages using a cooling roll. The primary stretching takes place in the longitudinal direction through a chill roll maintained at 16-17 캜 and the secondary stretching takes place in the width direction (vertical direction in the longitudinal direction) through a cooling roll maintained at 20-23 캜. The reason for raising the temperature of the secondary elongation to be higher than the primary elongation temperature is to prevent the plasticizability of the solidified plastic sheet from being dried and to improve the durability and moldability of the plastic sheet by alternately stretching the longitudinal direction and the width direction .

The seventh step is a step of applying the silicone to the plastic sheet and then drying it, and the antistatic effect can be obtained at the same time as the finishing treatment is performed by applying the silicone. It is preferable that silicone is applied using a diluted coating liquid in a concentration range of 5 to 25%, coated with silicone, and then dried at 160 to 215 캜. Further, it is preferable that the anti-fogging agent component is mixed with the silicone-containing coating liquid in order to suppress the water phenomenon formed in the produced plastic container.

Hereinafter, the structure and effects of the present invention will be described in more detail with reference to specific examples and comparative examples. However, this embodiment is intended to explain the present invention more specifically, and the scope of the present invention is not limited to these embodiments.

[Examples and Comparative Examples]

After preparing a mixed composition according to the composition shown in the following Table 1, plastic sheets were prepared by preheating, dehumidifying, heating, removing foreign matter, cooling, stretching and drying to prepare Examples and Comparative Examples. For each material, commercially available materials were used, and garlic extract and Sorghum extract were prepared as described in the detailed description of the invention.

[Table 1]

[Experimental Example 1]

The compositions of Examples 1 to 3 and Comparative Examples were secondarily drawn to prepare a plastic sheet having a thickness of 10 mm, and the uniformity of the sheet surface was measured and reported in Table 2 below.

At this time, the primary drawing was performed at 16 占 폚 and the secondary drawing was performed at 21 占 폚. The uniformity was measured using a laser sensor (N2 laser, oscillation wavelength 337.1 nm, UDHO Laser., Japan), and 30 points were randomly selected and their surface roughness was measured , A value equal to or less than 0.3 was considered to be uniform, and a value exceeding 0.3 was evaluated to be non-uniform. Here, Examples 1 to 3 were stretched in the transverse direction after stretching in the longitudinal direction, and stretched only in the longitudinal direction in the Comparative Example.

[Table 2]

As shown in Table 2, in Examples 1 to 3, uniformity was more excellent than Comparative Example.

[Experimental Example 2: Torsion Test]

The compositions of Examples 1 to 3 and Comparative Examples were secondarily stretched to prepare a plastic sheet having a thickness of 2 mm and then molded to produce 100 plastic products, and the completeness of the plastic sheets was evaluated. Here, Examples 1 to 3 were stretched in the transverse direction after stretching in the longitudinal direction, and stretched only in the longitudinal direction in the Comparative Example.

[Table 3]

As shown in Table 3, in the case of Examples 1 to 3, 90% or more of the normal product could be made, but the comparative example had a relatively high defect rate.

[Experimental Example 3: yellowing test]

The compositions of Examples 1 and 3 were secondarily stretched to prepare a plastic sheet having a thickness of 2 mm and then molded to prepare 100 white plastic products. Ten months later, discoloration was visually observed, . At this time, a part changed to yellow color was evaluated as poor.

[Table 4]

As shown in Table 4, in Example 3, it was confirmed that almost all the products were not discolored. On the other hand, Example 1 showed good results, but had a higher discoloration rate than Example 3.

[Experimental Example 4: Anti-Fogging Test]

The composition of Comparative Example and Example 3 was secondarily drawn to prepare a plastic sheet having a thickness of 2 mm and then molded to produce 100 white plastic products. The spinach was stored inside, and after one day, The results are shown in Table 5 below.

[Table 5]

As shown in Table 5, in the case of Example 3, almost no water droplets were formed, but in the comparative example, it was confirmed that water droplets enough to be visually recognized were formed.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined in the appended claims. It will be possible.

1000: Bolt and nut coupling device
100: bolt supply part
200: nut supply part
400: fastening portion
500:
10: Bolt
20: Nut
15: Bolt with nut combined
1: Workbench

Claims (2)

A bolt supply part for aligning and transporting the bolts;
A nut feeding part for feeding and aligning the nuts;
A fastening part that receives the bolt and the nut from the bolt supply part and the nut supply part and fastens the nut to the bolt; And
And a pressing portion for pressing the lower head of the bolt fastened with the nut by the fastening portion,
Wherein the bolt supply unit includes:
A bolt receiving space is provided, the bolt received is moved to the connecting portion,
The nut supply unit includes:
A collecting part providing a storage space for the nut and forming a track-shaped spiral member for moving the nut housed in a spiral upward direction along the inner circumferential surface;
A vibration generating unit that generates vibration at one side of the collecting unit and applies vibration to the nut stored in the collecting unit so that the nut can move along the helical member; And
And a nut transferring portion connecting the collecting portion and the fastening portion,
The fastening portion
The bolt receiving groove is formed in a circular plate shape so as to be rotatable in one direction. The bolt receiving groove through which the bolt can be inserted is formed at regular intervals along the outer circumferential surface of the bolt receiving groove. And a bolt plate having a shape corresponding to at least a part of the outer circumferential surface of a circular plate shape in a rotating direction from one side where the bolt supply unit is provided is provided on one side of the bolt supply unit, A bolt rotating part for moving the wafer along a rotating direction while being held by the holding part;
The nut is provided at a lower portion of the bolt rotation portion and rotatable in the same direction and speed as the bolt rotation portion. The nut supply portion is provided at one side of the bolt rotation portion. The nut is supplied from the nut supply portion A nut rotating portion including a punching member for moving the bolt while rotating in a fastening direction to fasten the bolt inserted into the bolt receiving groove; And
And a stopper portion which is provided on the other side of the bolt rotating portion so as to abut the outer circumferential surface of the bolt rotating portion to drop the bolt inserted into the bolt receiving groove into the pressing portion,
The pressing portion
An engaging bolt transferring unit for aligning and transferring the bolts dropped by the stopper unit one by one;
The bolt is provided on one side of the coupling bolt transfer part to receive the bolt from the coupling bolt transfer part. The bolt received from the coupling bolt transfer part on the outer circumferential surface and the coupling bolt receiving groove, which can be inserted, An engaging bolt rotating part formed at intervals; And
When the coupling bolt receiving groove is disposed vertically downward by the rotation of the coupling bolt rotating portion, the lower bolt receiving groove is lowered to press the lower head of the bolt inserted in the coupling bolt receiving groove, Member,
A bolt supply unit 100, a nut supply unit 200, a fastening unit 400, and a fastening unit 400. The bolt supply unit 100, the nut supply unit 200, the fastening unit 400, And a vibration damping portion that absorbs vibration generated between the pressing portion (500)
The vibration attenuator may include a support plate that includes a first plate, a second plate, a third plate, and a fourth plate formed of "a" A vibration absorbing part provided between the plate of the support part and the other plate to absorb vibration; Between the upper portion of the first plate and the upper portion of the second plate, between the front end of the second plate and the front end of the third plate, between the lower portion of the third plate and the lower portion of the fourth plate, A second plate, a third plate, and a fourth plate that are installed between the front end of the first plate and the front end of the first plate to connect the first plate, the second plate, the third plate, and the fourth plate; And an upper portion and a front end of the first plate, an upper portion and a front end of the second plate, a front end and a lower end of the third plate, and two plates extending upwardly or downwardly from the lower end and the front end of the fourth plate, An extension plate,
Wherein the first plate comprises: a plate body formed from an "a" Two first upper fastening grooves formed on an upper blade of the plate body formed in an upper direction and connected to each other so that a front end of the connecting plate is rotatable; A second upper fastening groove formed between the first upper fastening grooves and connecting the lower portion of the extension plate so as to be rotatable; Two first shear locking grooves formed on front end blades of the plate body formed in a shear direction and connected to each other so that the upper portion of the connecting plate is rotatable; And a second shearing engagement groove formed between the first shearing engagement grooves and connecting the lower portion of the extension plate so as to be rotatable,
The extension plate may be formed in a lower portion connected to the second upper engagement groove or the second shear engagement groove so as to be able to slide in the vertical direction in the second upper engagement groove or the second shear engagement groove, A coupling device of a bolt and a nut for forming a sliding groove. delete

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