KR102073008B1 - Apparatus of rivet connecting - Google Patents

Abstract

Disclosed is an apparatus for fastening a rivet, which includes: a rivet alignment unit which aligns rivets in one direction; a rivet supply unit provided on one side of the rivet alignment unit to receive the rivet from the rivet alignment unit and press an end of the rivet; and a lower head supply unit disposed at a vertically lower side of the rivet supply unit, providing a seating position where two non-fastening members coupled by the rivet overlap, and supplying a lower head to be engaged with the rivet.

Description

Rivet Fastening Device {APPARATUS OF RIVET CONNECTING}

The present invention relates to a rivet fastening device, and more particularly, to a rivet fastening device for fastening by inserting the rivet to the engaging portion of the fastened member.

Joining of parts through rivet fastening is widely used in automobiles, electronic devices, various industrial devices and industrial structures.

Korean Patent Publication No. 10-1241657 discloses a part press assembly device for riveting. It is a frame consisting of a vertical plate and a horizontal plate fixed to the lower end of the vertical plate, an anchor jig detachably installed so that one of the parts to be assembled to the horizontal plate, and an anchor jig, above the anchor jig The press fitting jig which is provided to perform the assembly by giving the press input to the part enclosed in the settling jig and the other part to be assembled and the part which is detachably provided with the press fitting jig so that it can be replaced according to the part to be assembled with the settling jig. When measuring the press-in during assembly and assembling the component after the release force, the press-fit plate for connecting the measurer, and the vertical plate is installed on the vertical plate close to and away from the press-fit jig direction to press the parts, press-in and release Assemble and inspect parts, including press-fit means to verify force At the same time, to be performed in real time.

However, the prior art as described above focuses only on measurement, and parts supply and the like still require a high skill of the operator, and also, in case of a long time of work, the failure rate increases due to the fatigue and carelessness of the operator. As a result, there is a problem that productivity is lowered.

The present invention provides a rivet fastening device for aligning the rivets one by one and automatically supplying them one by one, and guiding the holes formed in the member to be fastened exactly.

The rivet fastening device for solving the above problems is provided with a rivet alignment unit for aligning the rivets in one direction, the rivet supply unit is provided on one side of the rivet alignment unit, receiving the rivets from the rivet alignment unit and pressing the end of the rivets and the It is disposed vertically below the rivet supply portion, and provides a seating place where the two non-fastening members coupled by the rivet overlap, and includes a lower head supply for supplying a lower head engaged with the rivet.

On the other hand, the rivet alignment unit provides a space for receiving the rivet, the collecting portion formed in a shape in which the rivet is collected as a portion of the internal space and hinged to one side of the collecting portion is integrally integrated with the collecting portion The upper head is rotated by forming a space or cutting the inner space of the collecting part in half, and a stepped portion formed by the upper head formed on the rivet is formed to form an inner space integrally with the collecting part. A riveting member including an alignment member arranged in one direction while collecting the rivets, and the rivet supply unit is provided on one side of the alignment member to transfer the rivets aligned in one direction and the rivets one by one. Receives temporarily received, and pushes the end of the rivet while descending to force the lower head And a punching member for fastening, wherein the lower head supply portion is inserted into the two fastening members to guide the coupling portions of the two fastening members to be completely overlapped, and the upper surface is moved downward by the rivet supply. The bottom surface of the rivet is in contact with the bottom surface of the rivet moves downward integrally, when the lower head is disposed at the bottom of the rivet guide when the lower surface of the rivet is in contact with the lower head is fastened And a positioning member supporting the forward and backward movement of the guide rod such that the rod and the guide rod come into contact with the bottom surface of the rivet moved downward by the rivet supply.

According to the present invention, the rivets are aligned in one direction and supplied automatically, and the productivity of the riveting operation can be increased by guiding the holes formed in the fastened member to be accurately stacked.

1 is a view showing an assembly member assembled by the rivet fastening device of the present invention.
2 is a view showing a rivet fastening device of the present invention.
3 is an enlarged view of the rivet alignment unit illustrated in FIG. 2.
4 is an enlarged view of the lower head supply unit illustrated in FIG. 2.
5 is a view showing another embodiment of the lower head supply shown in FIG.
6 is a view showing a vibration damping unit.
FIG. 7 is a view showing the first plate of FIG. 6.
8 is a view showing a load distribution.

DETAILED DESCRIPTION OF THE INVENTION The following detailed description of the invention refers to the accompanying drawings that show, 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 is to be understood that the various embodiments of the invention are different but need not be mutually exclusive. For example, certain shapes, structures, and characteristics described herein may be embodied in other embodiments without departing from the spirit and scope of the invention in connection with one embodiment. In addition, it is to be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the invention. The following detailed description, therefore, is not to be taken in a limiting sense, and the scope of the present invention is defined only by the appended claims, along with the full scope of equivalents to which such claims are entitled. Like reference numerals in the drawings refer to the same or similar functions throughout the several aspects.

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

1 is a view showing an assembly member assembled by the rivet fastening device of the present invention.

The assembly member 10 may include a first assembly member 10a and a second assembly member 10b. The assembly member 10 may be used to fasten parts such as pipes in a cross shape, and for this purpose, the first assembly member 10a and the second assembly member 10b may be disposed to face each other, but the first assembly member may be disposed. It may be arranged to rotate (10a) 90 degrees in the counterclockwise direction, the first assembly member (10a) and the second assembly member (10b) combined.

Since the first assembly member 10a and the second assembly member 10b have the same shape, the first assembly member 10a will be described as a representative example of the first assembly member 10a. 11), the second fastened member 12 and the third fastened member 15 may be included.

The first fastened member 11 and the second fastened member 12 may be fastened by the first rivet R1. Here, the first rivet R1 may be fastened to the first fastened member 11 and the second fastened member 12 using the rivet fastening device of the present invention. In the rivet fastening device of the present invention, when holes formed in the first to be fastened member 11 and the second to be fastened member 12 are stacked and arranged, the first rivet R1 is inserted into the hole to make the rivet fastening device first. The first fastening member 11 and the second fastening member 12 can be fastened. As such, the first fastened member 11 and the second fastened member 12 may be hinged by the first rivet R1.

The first fastened member 11 and the third fastened member 15 may be fastened by the second rivet R2. Here, the third fastened member 15 may be a bolt. The second rivet R2 may be fastened to the first fastened member 11 and the third fastened member 15 using the rivet fastening device of the present invention. In the rivet fastening device of the present invention, when the holes formed in the first to-be-fastened member 11 and the third to-be-fastened member 15 are stacked and arranged, the second rivet R2 is inserted into the hole to provide a first rivet fastening device. The first fastening member 11 and the third fastening member 15 can be fastened. As such, the first fastened member 11 and the third fastened member 15 may be hinged by the second rivet R2.

Briefly explaining the fastening of the parts using the assembly member 10, the first fastening member 11 is disposed in contact with the fastening target part (for example, a pipe), and the second fastening member 12 is rotated. In this case, the fastening target part may be gripped by the first fastening member 11 and the second fastening member 12.

In addition, when the third fastened member 15 is rotated, the third fastened member 15 may be seated in a coupling groove provided in the second fastened member 12, and in that state, the third fastened member 15 may be seated. By fastening the member 15, the fastening target part can be firmly gripped and fixed by the first fastened member 11 and the second fastened member 12.

As described above, the rivet fastening device of the present invention can be used to fasten the rivet to the fastened member by inserting the rivet into the hole when the fastened member having the hole is stacked.

In particular, the rivet fastening device of the present invention can be automatically supplied by the rivets are aligned in one direction one by one, and the productivity of the riveting operation can be improved by guiding the holes formed in the member to be fastened accurately.

Hereinafter, the rivet fastening device of the present invention will be described in detail with reference to FIG. 2.

2 is a view showing a rivet fastening device of the present invention.

Referring to FIG. 2, the rivet fastening device 1000 of the present invention includes a rivet alignment unit 100, a rivet supply unit 200, and a lower head supply unit 500.

The rivet fastening device 1000 of the present invention is a device for fastening the rivet R1 to the first fastened member 11 and the second fastened member 12, and the first fastened to the lower head supply part 500. The member 11 and the second fastened member 12 are stacked, and the rivet R1 can be fastened to the first fastened member 11 and the second fastened member 12 by the rivet supply unit 200. have.

Rivet alignment unit 100 is a place for temporarily storing the rivet (R1), it can be automatically delivered to the rivet supply unit 200 to be described later to align the rivet (R1) in one direction. A detailed description in this regard will be described later with reference to FIG. 3.

The rivet supply unit 200 includes a moving member 210 and a punching member 230, and is provided at one side of the rivet alignment unit 100 to supply the rivet R1 aligned in one direction by the rivet alignment unit 100. It can be received, punched and fastened with the lower head (R). Here, the lower head R is supplied by the lower head supply part 500, so that the rivet supply part 200 is located at a position facing the lower head supply part 500, specifically, vertically upward of the lower head supply part 500. It can be located at

The moving member 210 may be provided at one side of the rivet alignment unit 100. The moving member 210 may transfer the rivets R1 arranged in one direction by the rivet alignment unit 100 to the punching member 230 one by one. At this time, the rivet alignment unit 100 is located above the punching member 230, the moving member 210 is connected to the rivet alignment unit 100 and the punching member 230 in a diagonal shape rivet alignment unit 100 ), The rivet R1 may naturally move from the punching member 230 to the punching member 230.

At this time, the rivet (R1) is to form a shape having an upper head, as shown in Figure 1, the moving member 210 is formed with a moving groove to the upper head is caught naturally the rivet (R1) in one direction, that is, the upper head Can be moved while being aligned to the top.

The punching member 230 may press the end of the rivet (R1) to be forcibly fastened to the lower head (R). For this operation, it is obvious that the rivet supply unit 200 is provided with a driving means such as a motor. Although not shown in the drawings, the scope of rights should not be limitedly interpreted.

The punching member 230 may receive the rivets R1 one by one from the moving member 210 and temporarily receive them, and press the ends of the rivets R1 while being lowered to force the lower head R. Here, the lower head R may be supplied from the lower head supply unit 500 to be described later.

For example, when the first fastening member 11 and the second fastening member 12 are disposed on the lower head supply part 500 by an operator, the punching member 230 may be configured to close the lower head supply part 500. Pressing the end of the rivet (R1) while descending toward, so that the lower head (R) supplied from the lower head supply portion 500 to the rivet (R1) is fastened.

The lower head supply part 500 is disposed below the rivet supply part 200 vertically, and provides a seating position in which the first fastening member 11 and the second fastening member 12 are stacked, and the rivet R1 and The lower head R to be fastened may be supplied. A detailed description in this regard will be described later with reference to FIG. 4.

3 is an enlarged view of the rivet alignment unit illustrated in FIG. 2.

Referring to FIG. 3, the rivet alignment unit 100 includes a collecting unit 110 and an alignment member 130.

The rivet alignment unit 100 may transfer a large amount of rivets R1 accommodated in an unaligned state in one direction, that is, the upper head is arranged upward, to the rivet supply unit 200.

The collecting unit 110 may provide a space in which the rivet R1 is accommodated. The collecting unit 110 may be formed in a shape in which the rivet R1 is collected as a part of the internal space. For example, the collecting unit 110 has an open inlet in a square shape, and the bottom surface is formed in a straight line, and the inner wall connecting the inlet and the bottom surface may be formed in a shape that is collected in the bottom surface such as an inverted pyramid shape. have.

The alignment member 130 may be hinged to one side of the collecting unit 110 to form an internal space integrally with the collecting unit 110, or may be rotated while cutting the internal space of the collecting unit 110 in half.

Alignment member 130 is formed in a fan shape, one side may be formed in the same shape as the cross section of the collecting unit (110). Therefore, when one side is arranged in accordance with the bottom surface of the collecting unit 110 according to the rotation of the alignment member 130, a large amount of rivets (R1) accommodated in the collecting unit 110 is one side of the alignment member 130 Can be collected into stools.

At this time, one side of the alignment member 130 may be a stepped. As described above, the rivet R1 forms a shape having an upper head, and one side of the alignment member 130 has a stepped portion to which the upper head is caught, and the rivet R1 is collected on one side of the alignment member 130. When the upper head is caught on the step, the rivet R1 may naturally be aligned in one direction. That is, the alignment member 130 may be arranged at one side by aligning the rivet (R1) in one direction by the step.

Alignment member 130 may be delivered to the rivet supply unit 200, the rivets (R1) trapped in alignment on one side by the rotation. That is, when the alignment member 130 rotates counterclockwise in the state as shown in FIG. 3, the rivet R1 descends to flow to the rivet alignment unit 100, and rotates in the clockwise direction as shown in FIG. 3. If it can be configured to capture the rivet (R1).

Rivet fastening device 1000 according to the present invention includes such a rivet alignment unit 100, by increasing the productivity of rivet fastening by providing the rivets (R1) aligned in one direction.

4 is an enlarged view of the lower head supply unit illustrated in FIG. 2.

Referring to FIG. 4, the lower head supply part 500 includes a positioning member 510, a seat 515, and a guide rod 530.

As described above, the lower head supply unit 500 may be positioned below the rivet supply unit 200 to supply the lower head R to be fastened to the rivet R1 descending from the rivet supply unit 200, and the member to be fastened. The hole formed in the guide can be guided so as to be superimposed accurately.

The guide rod 530 is configured to be inserted into the coupling portion of the member to be fastened, and may guide the coupling portion of the two members to be completely overlapped.

To this end, a seating position 515 may be provided at a lower portion of the guide rod 530.

The guide rod 530 may be moved downward by the rivet R1 that is pressed by the rivet supply unit 200 and moves downward. The guide rod 530 may move downwardly integrally with the rivet R1 as the top surface contacts the bottom surface of the rivet R1 moving downward by the rivet supply unit 200 of the rivet R1.

The guide rod 530 may include a spring member. The guide rod 530 can be quickly moved upward after the pressing action by the rivet R1 by the spring force of the spring member to return.

The positioning member 510 may be moved back and forth so that the guide rod 530 may contact the bottom surface of the rivet R1 which is moved downward by the rivet supply unit 200.

The operator may overlap the coupling portions of the two fastened members and insert the guide rods 530. At this time, when the guide rod 530 is positioned vertically below the rivet supply unit 200, the rivet supply unit 200 may interfere with the insertion of the fastening member into the guide rod 530. Therefore, in the present embodiment, the guide rod 530 is basically disposed in front of the rivet supply unit 200 so that an operator can easily insert two fastening members into the guide rod 530. In addition, the operator may move the guide rod 530 backward by manipulating the position adjusting member 510 to move the guide rod 530 into which the member to be fastened is inserted vertically downward of the rivet supply unit 200. Here, it is apparent that a driving means such as a motor for supporting the forward and backward movement of the positioning member 510 is provided, and although not shown in the drawings, the scope of rights should not be limitedly interpreted.

The lower head R may be disposed at the lower end of the guide rod 530. That is, when the guide rod 530 is completely moved downward by the pressing action by the rivet (R1), the bottom surface of the rivet (R1) can be fastened in contact with the lower head (R).

Here, the lower head R may be in a pre-filled state, and may be transferred to the lower end of the guide rod 530 by the air shooter. In addition, the lower head supply unit 500 may include a magnet for fixing the lower head (R) in place.

On the other hand, Figure 5 is a view showing another embodiment of the lower head supply shown in FIG.

Referring to FIG. 5, the lower head supply part 500 ′ omits the configuration of the positioning member 510 in comparison with the lower head supply part 500 shown in FIG. 4, and the seat 525 and the guide rod 550. It may include only the configuration of.

In this case, the guide rod 550 may be basically disposed below the rivet supply unit 200. The guide rod 550 may be received by the main body 520 by moving downward by the pressing action by the rivet (R1).

The rivet fastening device 1000 according to the present invention includes such a lower head supply part 500 to supply the lower head R, as well as to guide the coupling portion of the fastening member to be accurately stacked. By precisely guiding the rivet R1 inserted into the engaging portion of the member to the lower head R, the precision of the riveting operation can be increased.

On the other hand, although not shown in Figure 1, the rivet fastening device 1000 of the present invention may further include a vibration damping unit. The vibration damping unit is installed at the portion where the rivet alignment unit 100 and the rivet supply unit 200 are connected or installed at the portion where the rivet alignment unit 100, the rivet supply unit 200, and the lower head supply unit 500 are connected to the work table. Thus, vibrations generated between the rivet alignment unit 100 and the rivet supply unit 200 or vibrations generated between the rivet alignment unit 100, the rivet supply unit 200, and the lower head supply unit 500 and the work table are absorbed.

In the present invention, it is possible to solve the problem of each component including the vibration damping unit is damaged or separated by vibration.

6 is a view showing a vibration damping unit.

Referring to FIG. 6, the vibration damping unit 330 includes a support part 331, a vibration absorbing part 332, a connection plate 333, an extension plate 334, and an installation part 335.

The support part 331 is a first plate 331-1, a second plate 331-2, a third plate 331-3, and a fourth plate 331-4 that are formed of a plate having a “b” shape. ).

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 so as to face each other. As a form of the "+" form, and the vibration absorbing portion 332 is installed in the space spaced apart it can absorb the vibration transmitted to each plate.

The vibration absorbing part 332 is provided between each plate of the supporting part 331 and another plate, respectively, and absorbs a vibration.

In one embodiment, the vibration absorbing portion 332 may be formed by means of an elastic material such as a spring or rubber that can absorb shocks, provided that the vibration absorbing portion 332 is applied regardless of its name. This will be possible.

The connecting plate 333 is formed between the upper end of the first plate 331-1 and the upper part of the second plate 331-2, the front end of the second plate 331-2, and the third plate 331-3. Between the front end, 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. It is installed so as to rotate two at each of the first plate (331-1), the second plate (331-2), the third plate (331-3) and the fourth plate (331-4) in the form of "+" Install the connection.

That is, the connecting plate 333 may not only interconnect the upper, lower, or front end of each plate to form an overall appearance, but also rotate each connecting portion to correspond to external vibrations or shocks. By adjusting the connection angle, the 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 connecting plate 333. It may be able to withstand some degree of external vibration or shock, but if critical vibration or critical shock is applied, it will not be able to hold it and the connection plate 333 installed on each plate will be damaged and thus cannot perform its original function. .

Accordingly, the connection plate 333 according to the present invention, the first plate 331-1, the second plate 331-2, the third plate 331-3 and the fourth plate 331-4 By connecting to some extent possible, it is possible to maintain the fastening more efficiently to vibration or shock than the case described above.

The extension plate 334 includes an upper portion (ie, an upper wing) and a front end (ie, a front wing) of the first plate 331-1, an upper side and a front end of the second plate 331-2, and a third plate 331. -3) and two extending to the mounting portion 335 for each plate in the upper or lower direction from the lower and the front end and the lower and the front end of the fourth plate (331-4).

In one embodiment, the extension plate 334 may be rotated by the upper or lower portion is connected to the rotation shaft formed on the lower portion of the installation portion 335.

The installation unit 335 is installed so that the upper or lower portions of the two extension plates 334 extending from each plate face each other and are rotatable, and the upper portion of the lower or lower frame 320 of the upper frame 310. Installed in, for example, fastening means such as screw bolts, welding or rivets.

FIG. 7 is a view showing the first plate of FIG. 6.

Referring to FIG. 7, the first plate 331-1 may include a plate body 331-11, two first upper fastening grooves 331-12, a second upper fastening groove 331-13, and two The first shear fastening groove 331-14 and the second shear fastening groove 331-15 are included.

The plate body 331-11 is formed of a plate having a “b” shape, and forms two first upper fastening grooves 331-12 and second upper fastening grooves 331-13 on the upper wing, and shears Two first shear fastening grooves 331-14 and second shear fastening grooves 331-15 are formed in the blade.

The first upper fastening groove 331-12 is formed in the upper wing of the plate body 331-11 formed in the upward direction and connects and installs the front end of the connecting plate 333 to be rotatable.

The second upper fastening grooves 331-13 are formed between the first upper fastening grooves 331-12 to connect and install the lower portion of the extension plate 334 so as to be rotatable.

The first shear fastening grooves 331-14 are formed in the front blades of the plate body 331-11 formed in the shear direction, and connect the upper ends of the connection plates 333 so as to be rotatable.

The second shear fastening groove 331-15 is formed between the first shear fastening grooves 331-14 to connect and install the lower portion of the extension plate 334 so as to be rotatable.

In one embodiment, the extension plate 334, the second upper fastening groove 331 to allow the sliding movement in the vertical direction in the second upper fastening groove (331-13) or the second front fastening groove (331-15). 13 or a sliding groove 341 in the up and down direction may be formed at a lower portion connected to the second shear coupling groove 331-15.

In addition, the connection plate 333 may also form 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 configuration is provided to the second plate 331-2, the third plate 331-3, or the fourth plate 331-4 which differ only in its installation position. The same applies to the bar, the description of the second plate 331-2, the third plate 331-3 or the fourth plate 331-4 will be omitted.

In addition, although not shown in Figure 1, the rivet fastening device 1000 of the present invention may further include a load distribution. The load spreading part 700 is a part where the rivet alignment unit 100 and the rivet supply unit 200 are connected or installed, or the rivet alignment unit 100, the rivet supply unit 200, and the lower head supply unit 500 are connected to the installation table. The load applied to the rivet alignment unit 100 and the rivet supply unit 200 or the load applied to the work table from the rivet alignment unit 100, the rivet supply unit 200, and the lower head supply unit 500. Can be dispersed and partially absorbed.

8 is a view showing a load distribution.

Referring to FIG. 8, the load spreading part 700 may include a ball housing 710 in which a hollow part 715 is provided, a plurality of small balls 720 for supporting the ball set in the hollow part 715, and a ground at an upper part thereof. Ground ball 740 having a plane 745.

The load spreading part 700 is a part where the rivet alignment unit 100 and the rivet supply unit 200 are connected or installed, or the rivet alignment unit 100, the rivet supply unit 200, and the lower head supply unit 500 are connected to the installation table. It can be installed at the part.

The load spreading part 700 may distribute and partially absorb a load applied from the outside, and transmit a load q smaller than the load P applied from the outside.

The load spreader 700 distributes the load applied from the outside of the ball housing 710 inside the ball housing 710 and finally transmits a load smaller than the load applied from the outside of the ball housing 710. . The load applied from the outside of the ball housing 710 is distributed by the plurality of supporting small balls 720 and the ground ball 740 located in the hollow portion 715, and a part of the load is partially transferred to the ball housing 710. The inner wall is dispersed while pressing, and the remaining load may be transmitted to the outside of the ball housing 710.

The ball housing 710 may be fixed to the work table 10, and a hollow part 715 in which a plurality of supporting small balls 720 and ground balls 740 are accommodated may be provided therein.

The ball housing 710 is a material having a certain strength of iron, concrete, wood, plastic, etc. to support the load distributed by the action between the plurality of supporting small balls 720 and the ground ball 740 disposed therein It may be made of.

The ball housing 710 may be formed in various shapes such as a polyhedron or a sphere, and the hollow part 715 may be formed in a spherical shape corresponding to the shape of the ground ball 740.

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

The plurality of supporting small balls 720 may be regularly arranged and received to contact each other along the outer circumferential surface of the hollow part 715. The ground ball 740 may be accommodated in the hollow part 715 in a state in which the ground ball 740 is placed on the plurality of supporting small balls 720, and may be supported in a point contact state by the plurality of supporting small balls 720.

As described above, the plurality of supporting small balls 720 and the ground ball 740 are regularly arranged so that the outer circumferences are in contact with each other, and the external load is increased by the contact point between the plurality of the supporting small balls 720 and the ground ball 740. Dispersion of external loads may occur while pressing the inner wall of the hollow portion 715, ie the ball housing 710, which is transmitted and finally located at the outermost side. At this time, in the present 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 720 for support, thereby arranging the plurality of small balls for support. The number of points of contact between the 720 and the ground ball 740 may be increased, and load transfer may be regulated to increase the load transfer effect between each other. In addition, the ground ball 740 is supported in a point contact state by the plurality of support small balls 720, it is possible to minimize the wear.

The plurality of supporting small balls 720 and the ground ball 740 may be made of a material having a strength that can withstand the load by the contact point between each other, for example, may be made of iron, concrete, wood, plastic, etc. have.

On the other hand, the ground ball 740 may be provided with a ground plane 745 on the top. The ground plane 745 is a portion where the rivet alignment unit 100 and the rivet supply unit 200 are connected or installed, or the rivet alignment unit 100, the rivet supply unit 200, and the lower head supply unit 500 are connected to the work table. It may be attached in interview with the part. Although not shown in FIG. 8, the load spreading part 700 further includes a fixing cover for fixing the ground ball 740 accommodated in the hollow part 715, and the rivet alignment part 100 and the rivet supply part (by the fixing cover). 200 may be fixed to a portion where the installation or rivet alignment unit 100, the rivet supply unit 200 and the lower head supply unit 500 and the work table is connected to the installation.

As such, the load spreader 700 may distribute and partially absorb the load applied to the workbench from the rivet alignment unit 100, the rivet supply unit 200, and the lower head supply unit 500, and then transfer the load to the workbench. Therefore, the load distribution unit 700 can ensure the support safety of the work table, and can prevent problems such as deformation of various configurations due to high loads.

As such, at least some components of the rivet fastening device 1000 according to the present invention may be implemented as a plastic sheet manufactured by the plastic sheet manufacturing method according to an embodiment of the present invention as follows.

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

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

PET resin is a basic resin, has excellent thermal stability and high crystallinity, can be recycled, and can be used in the form of a master batch. Polyurethane dispersants serve to improve the miscibility with other components. Polyethylene dioxythiophene polystyrene sulfonate, polystyrolsulfonic acid, N-methyl-2-pyrrolidone and triethyl amine Functions as an antistatic agent. Since the plastic sheet for manufacturing the plastic container is generally an electrical insulator, static electricity is generated by frictional charging, and if it is severely caused by discharge or electric conduction, it may lead to an explosion or fire, so it is preferable to add a charging agent. . Isopropyl alcohol functions as an antifogging agent. The antifogging agent can suppress water condensation caused by water vapor, which may occur when the plastic container is manufactured using the plastic sheet, when the fruit and the like are stored.

For example, the above-described raw materials are based on 100 parts by weight of polyethylene terephthalate (polyethylene telephthalate, PET) resin, 2 to 4 parts by weight of polyurethane dispersant, polyethylene dioxythiophene polystyrene sulfonate (polyethylene dioxythiophene polystyrene sulfonate) 0.1 0.2 parts by weight, 0.4-0.6 parts by weight of polystyrolsulfonic acid, 3-5 parts by weight of N-methyl-2-pyrrolidone, triethyl amine It is preferable to mix 0.1-0.3 weight part, 42-45 weight part of isopropyl alcohol, and 50-52 weight part of water. When added outside the above range, various problems may occur. In particular, in the case of the antistatic agent, when mixed over each range, the plastic surface to be produced may be sticky, the sealing and printability may be reduced, in the case of white plastic, yellowing may occur.

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

For example, the boron-based binder may be further mixed. The boron (B) -based binder is used to combine the respective components, the boron-based binder is preferably mixed in 2 to 10 parts by weight with respect to 100 parts by weight of PET resin. When the content of the boron-based binder is less than 2 parts by weight, the raw materials and the like cannot be effectively bound, and when the content of the boron-based binder exceeds 70 parts by weight, it is uneconomical.

For example, the garlic extract may be further mixed. Garlic extract is a natural adhesive component, and functions as a binder to improve the compatibility with other components along with the boron-based binder. The garlic extract is peeled and crushed garlic, added 2 to 3 parts by weight of water per 1 part by weight of garlic, heated at 80 to 100 ℃ for at least 5 hours, the liquid component is extracted and filtered, and then filtered It can be prepared by concentrating the liquid component at 55 ~ 60 ℃. Garlic extract is preferably mixed 5 to 10 parts by weight based on 100 parts by weight of PET resin. If the content of the garlic extract is less than 5 parts by weight, the raw materials may not be properly entangled and the surface may not be formed evenly during plastic sheet production. If the content of the garlic extract is more than 10 parts by weight, the dispersibility and mixing properties of each component are rather There is a risk of deterioration.

For example, the apatite powder may be further mixed. The apatite powder functions as a filler and can maintain the shape of the plastic sheet to improve workability, maintain strength, and improve corrosion resistance. Apatite is an inorganic substance present in bone, and in order to use it as a filler, it is important to have a small particle size, a high residual amount of carbonic acid, and a low crystallinity. Preferably the size of the apatite granules is 200-400 μm. For this purpose, it is important to go through the sintering process at 500 ~ 700 ℃. When sintering below 500 ° C., there is a disadvantage in that the desired granule size and crystallinity cannot be obtained. When sintering above 700 ° C., the residual amount of carbonic acid groups is low and crystallinity is too high. The apatite powder is preferably mixed at 20 to 30 parts by weight with respect to 100 parts by weight of the PET resin.

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

For example, the cork powder may be further mixed. Cork powder, together with the apatite powder, can improve the durability of the plastic sheet. Cork powder can be prepared by removing the bark of the oyster oak, and then grinding. As cork powder, it is preferable to use finely ground particles filtered into a mesh of 400 mesh or more for compatibility with PET resin and the like. Cork powder is preferably mixed in 15 to 25 parts by weight based on 100 parts by weight of PET resin. If the cork powder is less than 15 parts by weight, the degree of improvement of durability is insignificant, and if it exceeds 25 parts by weight, voids may be formed inside the plastic during manufacture, so durability may be rather deteriorated.

For example, the hermit extract may be further mixed. The hermit extract not only acts as an antimicrobial agent, but also suppresses yellowing that may occur in white plastic sheets. Rumex crispus is a plant in the genus Rumex that grows in Korea. The hermit is a perennial herb that grows well in humid places around the country and uses young shoots for edible in folk medicine, and in Chinese medicine, it is called yangje (羊蹄). It is used as an adjuvant therapy for tumors and cancer. The hermit extract extracted from the hermit has antimicrobial and antioxidant effects on various microorganisms, and when used in combination with a small amount of sulfur, it has an excellent effect on skin itching. It is reported that useful ingredients of the oxalic acid include saponins, tannins, flavonoids, essential oils and anthraquinone derivatives such as chrysophanol and emodin. The hermit extract is washed well with the collected hermit, dried in the shade and divided into ground parts (except roots) and underground parts (root parts), and extracted with 80% (v / v) methanol for 3 days. After immersion, the extract can be filtered with a membrane filter (porosity 0.5 μm) to separate the solids, and the methanol extract can be prepared by concentrating at 50 ° C. using a rotary evaporator. The hermit extract is preferably mixed in 3 to 8 parts by weight with respect to 100 parts by weight of PET resin. When the content of the hermit extract is less than 3 parts by weight, the antimicrobial activity is insignificant in the anti-yellowing effect, when it exceeds 8 parts by weight is uneconomical.

The second step is a step of preheating the mixed composition, by applying heat to the mixed raw materials to ensure that the raw materials are stably mixed primarily.

The third step is a dehumidification step for removing the moisture present in the preheated mixed composition, dehumidification is preferably made in a temperature range of 150 ~ 180 ℃. If it is below or exceeding the above range, dehumidification is insufficient or may adversely affect the durability of the plastic.

The fourth step is a step of heating the mixed composition from which moisture is removed, and after melting the mixed composition, the heating temperature is preferably controlled to 260 to 270 ° C.

The fifth step is to remove foreign substances in the heated mixed composition, and may remove foreign matters inside the mixed composition by passing through a mesh-shaped screen.

The sixth step is a step of stretching while cooling the mixed composition from which foreign substances have been removed to prepare a plastic sheet, and stretching in two steps using a cooling roll. The primary stretching is made in the longitudinal direction through the cooling roll maintained at 16 ~ 17 ℃, the secondary stretching is made in the width direction (vertical direction in the longitudinal direction) through the cooling roll maintained at 20 ~ 23 ℃. The reason for raising the temperature of the secondary stretching above the primary stretching temperature is to prevent the plastic sheet to be solidified and to deteriorate in formability, and to improve the durability and formability of the plastic sheet by alternately stretching the longitudinal direction and the width direction. You can.

In the seventh step, the silicone sheet is applied to the plastic sheet and then dried, and the silicon sheet is coated and finished to obtain an antistatic effect. It is preferable to apply | coat silicone using the coating liquid diluted to the concentration range of 5-25%, and apply | coat silicone and it is preferable to dry at 160-215 degreeC. In addition, it is preferable to mix the above-mentioned antifog component in the coating liquid containing silicone in order to suppress the water phenomenon formed in the manufactured plastic container.

Hereinafter, the configuration of the present invention and its effects through specific examples and comparative examples will be described in more detail. However, this embodiment is intended to illustrate the present invention in more detail, and the scope of the present invention is not limited to these examples.

[Examples and Comparative Examples]

To prepare a mixed composition according to the composition of Table 1, after the preheating, dehumidification, heating, removing foreign matters, cooling and stretching, drying step to prepare a plastic sheet to prepare an example and a comparative example. Each material used commercially available materials, and in the case of garlic extract and the hermit 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 secondly stretched to prepare a 10 mm thick plastic sheet, and the uniformity of the sheet surface was measured and described in Table 2 below.

At this time, the primary stretching was 16 ° C, and the secondary stretching was 21 ° C. Uniformity was measured using a laser sensor (N2 laser, oscillation wavelength 337.1nm, UDHO Laser. LTD., Japan) and 30 surface points were randomly selected to measure their surface roughness (standard deviation was used. , ± 0.3 or less were uniform, and more than ± 0.3 was evaluated to be nonuniform). At this time, Examples 1-3 were extended in the width direction after extending | stretching in the longitudinal direction, and the comparative example extended | stretched only in the longitudinal direction.

TABLE 2

As in Table 2, in the case of Examples 1 to 3, both uniformity was superior to the comparative example.

Experimental Example 2: Torsion Test

The compositions of Examples 1 to 3 and Comparative Examples were secondly stretched to prepare a plastic sheet having a thickness of 2 mm, and then molded to prepare 100 plastic products, evaluated for completeness, and are shown in Table 3 below. At this time, Examples 1-3 were extended in the width direction after extending | stretching in the longitudinal direction, and the comparative example extended | stretched only in the longitudinal direction.

TABLE 3

As shown in Table 3, in Examples 1 to 3, more than 90% of the normal product can be made, but the comparative example has a relatively high defective rate.

Experimental Example 3: Yellowing Test

The compositions of Examples 1 and 3 were secondly stretched to prepare plastic sheets having a thickness of 2 mm, and then molded to prepare 100 white plastic products, which were visually observed for discoloration after 10 months. It was. At this time, the part which turned yellow was evaluated as defect.

TABLE 4

As shown in Table 4, in the case of Example 3, it was confirmed that almost all products did not discolor. On the other hand, Example 1 obtained good results, but the discoloration rate was relatively higher than that of Example 3.

Experimental Example 4: Antifog Test

After stretching the composition of Comparative Example and Example 3 to prepare a plastic sheet having a thickness of 2mm, and then molded by molding 100 white plastic products, after storing the spinach inside, after 1 day visually observed the inside It is shown in Table 5 below.

TABLE 5

As shown in Table 5, in the case of Example 3, almost no water droplets were formed, the comparative example was confirmed that the water droplets are enough to be identified with the naked eye.

Although described above with reference to the embodiments, those skilled in the art will understand that various modifications and changes can be made within the scope of the invention without departing from the spirit and scope of the invention as set forth in the claims below. Could be.

1000: rivet fastening device
100: rivet alignment
200: rivet supply
500: lower head supply
10: assembly member
10a: first assembly member
10b: second assembly member
11: first member not fastened
12: second non-fastening member
15: third member not fastened
R1: first rivet
R2: second rivet

Claims (1)

In the rivet fastening device for fastening a rivet to a 1st fastened member and a 2nd fastened member,
A rivet alignment unit for aligning the rivets in one direction;
A rivet supply unit provided at one side of the rivet alignment unit to receive the rivet from the rivet alignment unit and press the end of the rivet; And
And a lower head supply part disposed below the rivet supply part and providing a seating position in which two non-fastening members joined by the rivet are overlapped, and supplying a lower head engaged with the rivet.
The rivet alignment unit,
The rivet is provided with a space for receiving, the inlet opening is square shape, the bottom surface is formed in a straight line and the inner surface connecting the inlet and the bottom surface is formed to be collected in the bottom surface in the reverse pyramid shape, the inner space A collecting portion in which the rivets are collected as part of; And
It is hinged to one side of the collecting unit, rotates while forming an internal space integrally with the collecting unit or by dividing the internal space of the collecting unit in half, and is formed in a fan shape, one side of which has the same shape as the cross section of the collecting unit. When the internal space is integrally formed with the bottom surface of the collecting unit according to the rotation, the rivets stored in the collecting unit are collected by the one side, and the stepped portion where the upper head of the rivet is caught by the one side. Is formed, when the rivet is collected on the one side, the upper head of the rivet is caught on the step so that the rivet is aligned in one direction, and the rivet trapped on the one side by rotation to the rivet supply unit It includes; alignment member for transmitting,
The rivet supply unit,
A moving member provided at one side of the alignment member to transfer the rivets aligned in one direction; And
And a punching member configured to receive the rivets one by one from the moving member and temporarily receive them, and press the ends of the rivets to force the lower ends of the rivets to force the rivets to the lower head.
The lower head supply unit,
A seating position of the first to-be-membered member and the second to-be-membered member, which is inserted into a coupling portion of the first to-be-fastened member and the second to-be-fastened member, is completely overlapped at the bottom; In contact with the bottom surface of the rivet, which moves downward by the rivet supply unit is moved downwardly integrally with the rivet, and moved upward to return by the elastic force of the spring member, the lower head is disposed at the bottom to move downward In the case, the lower end of the rivet guide rod to be in contact with the lower head; And
And a positioning member supporting the forward and backward movement of the guide rod so that the guide rod can contact the bottom surface of the rivet moved downward by the rivet supply unit.
The rivet fastening device,
And a vibration damping unit installed at a portion where the rivet alignment unit and the rivet supply unit are connected and installed to absorb vibration generated between the rivet alignment unit and the rivet supply unit.
The vibration damping unit,
A first plate to a fourth plate formed of a plate having a "b" shape, and the first plate to the fourth plate are spaced apart from each other so as to face each other to form an external shape of a "+" shape. Supporting portion to be;
A vibration absorbing part disposed between the first plate and the fourth plate and formed of an elastic material means including a spring or rubber to absorb vibration;
Between the top of the first plate and the top of the second plate, between the front end of the second plate and the front end of the third plate, between the bottom of the third plate and the bottom of the fourth plate, and the fourth plate A connecting plate installed to be rotatable two by one between a front end of the first plate and a front end of the first plate;
The upper and the front end of the first plate, the upper and front end of the second plate, the front and the lower end of the third plate, and the lower and front end of the fourth plate, two plates are formed in each of the upper or lower direction Extension plates; And
And an installation unit configured to connect the upper or lower portions of the two extension plates extending from the first to fourth plates so as to face each other and rotate.
The first plate to the fourth plate, respectively,
The plate is formed of a "b" shaped plate, and forms two first upper fastening grooves and a second upper fastening groove in the upper wing, and two first shear fastening grooves and a second shear fastening groove in the front wing. main body;
Two first upper fastening grooves formed on an upper wing of the plate body formed in an upward direction to connect and install a front end of the connecting plate to be rotatable;
The second upper fastening groove formed between the two first upper fastening grooves to connect and install a lower portion of the connection plate to be rotatable;
Two first shear fastening grooves formed on the front end blades of the plate body formed in the shear direction and connected to each other so as to pivot the upper portion of the connection plate; And
And a second shear fastening groove formed between the two first shear fastening grooves to connect and install a lower portion of the connection plate so as to be rotatable.
The extension plate,
A sliding groove in a vertical direction is formed in a lower portion connected to the second upper coupling groove or the second shear coupling groove so as to slide in the vertical direction from the second upper coupling groove or the second shear coupling groove. ,
The rivet fastening device,
And a load dispersing unit connected between the rivet fastening device and the work table to which the rivet fastening device is connected to distribute the load applied to the work table from the rivet alignment unit, the rivet supply unit, and the lower head supply unit.
The load distribution unit,
A ball housing fixed to the work table and having a hollow portion provided therein;
A plurality of supporting small balls placed in the hollow part; And
Includes; a ground ball having a ground plane on the top;
The plurality of small balls for support,
Formed in a spherical shape, regularly arranged and received to be in contact with each other along the outer circumferential surface of the hollow portion,
The ground ball,
It is accommodated in the hollow part while being mounted on the plurality of small balls for support, and is supported in the point contact state by the plurality of small balls for support, and the ground plane is the rivet alignment unit, the rivet supply unit, and the lower head supply unit. Rivet fastening device is attached to the interview and the work piece is connected to the installation.

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