KR20190141506A - Blind bolt auto-assembly and caulking device - Google Patents

Abstract

The present invention relates to an apparatus for automatically assembling and caulking a blind bolt. According to the present invention, the blind bolt comprises: a bolt which includes a male screw unit, an engagement unit formed on one end of the male screw unit, and a head formed on one end of the engagement unit; and a sleeve which includes a body inserted into the engagement unit of the bolt by press-fit, and a flange protruding outwards from an end of the body pointing to the opposite side of the head. According to the present invention, the apparatus for automatically assembling and caulking the blind bolt comprises: a first transfer unit which transfers a temporarily assembled product, which is made by inserting the sleeve to the male screw unit of the bolt, to a position for assembly; an assembly unit which presses the head of the bolt towards the sleeve in the temporarily assembled product, which is transferred to the position for assembly, thereby press-fitting the engagement unit of the bolt into the sleeve; a second transfer unit which transfers the assembled product in which the engagement unit of the bolt is press-fitted into the sleeve to a position for caulking; and a caulking unit which presses the outer circumferential surface of the sleeve towards the engagement unit in the assembled product, which is transferred to the position for caulking, thereby compressing the sleeve towards the engagement unit.

Description

Blind bolt auto-assembly and caulking device

The present invention relates to an automatic blind bolt assembly and caulking device, and more particularly to an apparatus for automatically assembling and caulking the bolt and sleeve forming the blind bolt.

In general, the blind bolt is provided to fasten the nut by fixing one side to the plate and the other side through the part to be connected to the plate.

As a technology related to such blind bolts, high-strength blind bolts are presented in Korean Patent Publication No. 10-0752102 (hereinafter referred to as' prior art 1 '), and Korean Patent Publication No. 10-1449188 (hereinafter,' A blind bolt fastening structure with a stable head is shown in the prior art 2 '.

As shown in prior arts 1 and 2, the blind bolt comprises a bolt having a head and a sleeve fitted to the bolt. Such blind bolts can be used by being fixed to the plate by fixing the sleeve while the sleeve is inserted into the plate so that the head of the bolt passes through the hole formed in the plate, and only pulling the bolt to fold the sleeve to extend in the radial direction. .

As described above, the material is softer than the bolt so that the sleeve can be easily deformed by pulling the bolt. Therefore, the bolt and the sleeve are manufactured separately, and then the blind bolt is manufactured by assembling them.

However, if the bolt and the sleeve is assembled manually, productivity will decrease and labor costs will increase, so a separate device for automatically assembling the bolt and the sleeve is required.

[Document 1] Republic of Korea Patent Publication No. 10-0752102 (2007.08.20. Registration) [Document 2] Republic of Korea Patent Publication No. 10-1449188 (2014.10.01. Registration)

It is an object of the present invention to provide a device capable of automatically assembling and caulking a bolt and sleeve forming a blind bolt.

The problem to be solved of the present invention is not limited to the aforementioned problem. Other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

In order to solve the above problems, automatic blind bolt assembly and caulking apparatus according to the present invention, a bolt having a coupling portion formed on one end of the male screw portion and the male screw portion and a head formed on one end of the coupling portion; And a sleeve having a body fitted into the coupling portion of the bolt by press-fit and a flange protruding outwardly from an end of the body toward the opposite side of the head. A first conveying part which conveys the provisional assembly including the sleeve to a threaded part to an assembly position; An assembly unit for pressing the coupling part of the bolt into the sleeve by pressing the head of the bolt toward the sleeve in the provisional assembly transferred to the assembly position; A second conveying part which conveys the assembly press-fitted to the sleeve to the caulking position; And a caulking portion for pressing the outer circumferential surface of the sleeve to the engaging portion in the assembly delivered to the caulking position to compress the sleeve to the engaging portion.

In an embodiment of the present invention, the first transfer unit may include a turntable including a motor and an index plate rotated by the motor; A plurality of insertion holes arranged along a circumference of the index plate, each of which is formed to penetrate up and down so that the sleeve of the prefabricated article can be inserted therein, and the flange of the sleeve can be secured by being caught upside; And a support plate installed below the index plate to support the head of the bolt inserted into the sleeve while the temporary assembly is transferred to the assembly position.

In the embodiment of the present invention, the assembly portion, the pressing member is installed on the lower side of the index plate, the head of the bolt is placed in the temporary assembly to reach the assembly position; A pressure cylinder for pressurizing the pressure member upward; And a support member installed on an upper side of the index plate and supporting the flange of the sleeve in the provisional assembly having reached the assembly position.

In an embodiment of the present invention, the second transfer portion, the advance guide is installed to extend in the direction toward the caulking portion from the assembly portion on the upper side of the caulking portion; A retraction member installed to move forward and backward along the retraction guide; A forward and backward driving unit during the forward and backward operation of the forward and backward member; An elevating guide installed up and down on the retracting member; An elevating member installed to elevate along the elevating guide; An elevating driving unit for elevating the elevating member; A supply clamp installed at one side of the elevating member and configured to grip a male screw part of a bolt from the assembly outside the assembly position as the index plate is rotated, and to supply it to the caulking position; And a discharge clamp installed at the other side of the elevating member and holding the assembly disposed at the caulking position and discharging the assembly to the outside of the caulking unit.

In an embodiment of the present invention, the caulking unit comprises: a hydraulic chuck having a plurality of jaws radially arranged thereon; It includes; and each pressing portion installed in each tank of the hydraulic chuck.

In the embodiment of the present invention, the crimping portion, the support block coupled to the upper surface of the jaw; The pressure block is installed in the support block so as to slide toward the center of the hydraulic chuck, the mounting surface is in contact with the outer circumferential surface of the sleeve on one side, the sliding block penetrated toward the center of the hydraulic chuck on the inside ; A spring interposed between the support block and the pressure block; And a pressing member slidably inserted into the sliding hole of the pressing block, wherein the pressing block is pressed to contact an outer circumferential surface of the sleeve when the hydraulic chuck is operated, and the pressing member is pressed by the pressing block to the sleeve. The sleeve is pressed to protrude from the sliding hole by the support block which continues to move toward the center of the hydraulic chuck after contacting the outer circumferential surface of the sleeve.

According to the present invention, it is possible to automatically assemble and caulk the bolt and sleeve forming the blind bolt, there is an effect that the productivity can be improved and the labor cost can be reduced.

1 is a perspective view showing an example of a blind bolt.
Figure 2 is a perspective view of the automatic blind bolt assembly and caulking apparatus according to an embodiment of the present invention.
Figure 3 is a front configuration of the automatic blind bolt assembly and caulking apparatus according to an embodiment of the present invention.
4 is a front configuration diagram of the first transport unit and the assembly unit according to an embodiment of the present invention.
5 is a plan view of the caulking unit according to an embodiment of the present invention.
Figure 6 is a plan view showing the operation of the crimping unit according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention. For convenience of description, the components illustrated in the drawings may be exaggerated, omitted, or schematically represented.

The blind bolt has a structure in which the bolt 10 and the sleeve 20 are assembled as shown in FIG. 1. The bolt 10 has a male screw portion 11, a coupling portion 12 formed at one end of the male screw portion 11, and a head 13 formed at one end of the coupling portion 12. The sleeve 20 protrudes outwardly from the body 21 fitted into the coupling portion 12 of the bolt 10 by press-fitting, and at an end of the body 21 facing away from the head of the bolt 10. Has a flange 22. The coupling part 12 of the bolt 10 is formed in a serration shape. Accordingly, the sleeve 20 is cocked after a part of the body 21 is fitted to the coupling portion 12 by a press-fit method, so that the bolt 10 and the sleeve 20 are fixed to each other so as not to go wrong.

Automatic blind bolt assembly and caulking device of the present invention for automatically assembling and caulking the bolt 10 and the sleeve 20 forming the blind bolt, as shown in Figures 2 to 6 the first transfer unit 100 ), The assembly unit 200, the second transfer unit 300 and the caulking unit 400.

The first transfer part 100 transfers the sleeve 20 to the male threaded part 11 of the bolt 10 (refer to the enlarged view of FIG. 4 [a], hereinafter referred to as a 'provisional assembly') to an assembly position. For the purpose, as shown in Figure 2 and 4 comprises a turntable 110, the insertion hole 120 and the support plate 130.

Here, the 'assembly position' refers to a space in which the bolt 10 and the sleeve 20 are assembled, and in this embodiment, between the pressing member 210 and the supporting member 230 constituting the assembly 200. Space is applicable.

The turntable 110 includes a motor 111 and an index plate 112 rotated by the motor 111. The index plate 112 is formed in a circular plate shape. The motor 111 is provided below the index plate 112. The motor 111 is composed of a step motor or a servo motor to rotate the index plate 112 by a predetermined angle.

Insertion holes 120 are arranged at equal intervals along the circumference of the index plate 112. Each insertion hole 120 is formed through the top and bottom so that the sleeve 20 of the temporary assembly can be inserted, the flange 22 of the sleeve 20 has a size that can be fixed to the upper side. The insertion hole 120 may be formed in various shapes according to the shape of the body 21 of the sleeve 20. As shown, the body 21 of the sleeve 20 has a hexagonal shape adjacent to the flange 22, so that the insertion hole 120 is also made of a hexagonal hole.

As a result, the temporary assembly inserted into the insertion hole 120 is transferred to the assembly position by the rotation of the index plate 112.

On the other hand, although not shown, the upper side of the index plate 112 may be provided with a separate supply means for supplying the temporary assembly to the insertion hole (120). The supply means is arranged to hold the temporary assembly, and when the empty insertion hole 120 is positioned to the lower side by the rotation of the index plate 112, the structure to inject the temporary assembly into the insertion hole 120 It may be provided to have.

The support plate 130 is made of a substantially circular arc-shaped plate is installed on the lower side of the index plate 112. The support plate 130 is installed to extend over a section from the place where the temporary assembly is inserted into the insertion hole 120 in the index plate 112 to reach the assembly position. Accordingly, the support plate 130 supports the head 13 of the bolt 10 inserted into the sleeve 20 while the temporary assembly is transferred to the assembly position.

The assembling unit 200 presses the coupling part 12 of the bolt 10 by pressing the head 13 of the bolt 10 toward the sleeve 20 in the temporary assembly transferred to the assembly position by the first transfer unit 100. Pressed into the sleeve 20 to completely assemble the bolt 10 and the sleeve 20, as shown in Figures 2 and 4, the pressing member 210, the pressure cylinder 220 and the support member 230 It is made, including.

The pressing member 210 has a circular columnar shape and is installed below the index plate 112. It is disposed adjacent to the support plate 130 of the pressing member (210). The upper surface of the pressing member 210 and the upper surface of the support plate 130 are located at the same height. Accordingly, the head 130 of the bolt 10 is placed in the pressing assembly 210 to reach the assembly position.

The pressure cylinder 220 is installed on the lower side of the pressing member 210, and pressurizes the pressing member 210 to the upper side during operation.

The support member 230 is installed above the index plate 112 to face the pressing member 210 with the index plate 112 therebetween. The support member 230 is disposed close to the upper surface of the flange 22 of the sleeve 20 in the provisional assembly whose lower surface has reached the assembly position. Accordingly, when the pressing member 210 presses the head 130 of the bolt 10 upward by the operation of the pressure cylinder 220, the support member 230 opens the upper surface of the flange 22 of the sleeve 20. Supporting allows the coupling portion 13 of the bolt 10 to be pressed into the body 21 of the sleeve 20.

The second conveying part 300 is a fully assembled bolt 10 and the sleeve 20 by pressing the coupling portion 12 of the bolt 10 to the sleeve 20 (see enlarged view of FIG. 4 [b], Hereafter referred to as "assembly" to the caulking position, as shown in Figures 2 and 3, the forward and backward guide 310, the forward and backward member 320, the forward and backward drive unit 330, lifting guide 340, The lifting member 350, the lifting driving part 360, the supply clamp 370, and the discharge clamp 380 are included.

Here, the 'caulking position' means a space in which a caulking operation is performed on the assembly, and in this embodiment, a center portion of the hydraulic chuck 410 forming the caulking unit 400 corresponds.

Advancing guide 310 is made of a known linear guide (LM guide), so as to extend along the direction from the assembly portion 200 to the caulking portion 400 on the upper side of the assembly portion 200 and the caulking portion (400). Is installed.

The retreat member 320 is installed to move forward and backward along the retreat guide 310. Advancing member 320 is provided so that the two plate material approximately 'b' shape is coupled to the advance guide 310.

The forward and backward driving unit 330 is composed of a pneumatic cylinder to move the forward and backward members 320.

The retreat guide 310 and the retreat drive unit 330 are not limited to a structure in which the L guide and the pneumatic cylinder are combined, and a retreat member such as combining a ball screw and a motor or applying a rodless cylinder. Various devices capable of advancing and retrieving 320 may be applied.

The elevating guide 340 is made of an EL guide, and is installed to extend up and down on the advance member 320.

The elevating member 350 is installed to elevate along the elevating guide 340. The lower portion of the elevating member 350 is formed to extend in a direction toward the caulking unit 400 from the assembly unit 200. The supply clamp 370 and the discharge clamp 380 are respectively provided on both lower sides of the elevating member 350.

The elevating driving part 360 is made of a pneumatic cylinder to elevate the elevating member 350. The pneumatic cylinder forming the elevating driving unit 360 is fixed to the upper surface of the advancing member 320, the rod is connected to the elevating member 350.

The elevating guide 340 and the elevating driving unit 360 are not limited to the structure in which the L guide and the pneumatic cylinder are combined, and elevating the elevating member 350 by combining a ball screw and a motor or applying a rodless cylinder. Various devices capable of operating can be applied.

The supply clamp 370 is installed at one side of the elevating member 350 so that the index plate 112 is rotated so as to be located on the upper side of the assembled assembly. The supply clamp 370 has a tong structure that is narrowed or opened by the operation of the cylinder, and is provided to hold or place the male threaded portion 11 of the bolt 10 in the assembly.

The discharge clamp 380 is installed on the other side of the elevating member 350 to be located above the caulking position. The discharge clamp 380 has the same structure as the supply clamp 370 and is provided to hold or place the male threaded portion 11 of the bolt 10 in the assembly disposed at the caulking position.

According to the above configuration, the second transfer part 300 has a bolt in the assembly that is out of the assembly position after the supply clamp 370 disposed above the assembly that is out of the assembly position is lowered by the operation of the elevating drive unit 360. The male screw portion 11 of 10 is gripped, and then the supply clamp 370 is raised by the operation of the elevating drive unit 360, and then the supply clamp 370 is caulked by the operation of the forward and backward drive unit 330. Advance to the upper side, and then the supply clamp 370 is lowered to the caulking position by the operation of the elevating drive unit 360 again, and then release the grip of the male screw portion 11 to transfer the assembly outside the assembly position to the caulking position. Done.

In addition, the second transfer part 300 is the male screw portion of the bolt 10 in the assembly disposed in the caulking position after the discharge clamp 380 disposed above the caulking position is lowered by the operation of the elevating drive unit 360 ( 11), the discharge clamp 380 is raised by the operation of the elevating drive unit 360, and then the discharge clamp 380 is out of the caulking unit 400 by the operation of the forward and backward drive unit 330 Then, the discharge clamp 380 is lowered again by the operation of the elevating drive unit 360, and then release the gripping of the male screw portion 11 to discharge the assembly is completed in the caulking position.

As a result, the second transfer part 300 is provided so as to transfer the assembly outside the assembly position to the coking position and at the same time discharge the assembly completed caulking in the coking position.

The caulking unit 400 is for pressing the outer circumferential surface of the sleeve 20 to the engaging portion 12 side of the bolt 10 in the assembly conveyed to the caulking position to compress the sleeve 20 to the engaging portion 12. 2, 5 and 6 includes a hydraulic chuck 410 and the pressing portion 420.

The hydraulic chuck 410 is a mechanism for fixing a workpiece by using hydraulic pressure, and includes a plurality of jaws 411 arranged radially thereon.

The pressing unit 420 is installed in each jaw 411 of the hydraulic chuck 410, respectively, as shown in Figs. 5 and 6 support block 421 coupled to the upper surface of the jaw 411; A pressure block 422 slidably installed toward the center of the hydraulic chuck 410 on the support block 421; A spring 423 interposed between the support block 421 and the pressure block 422; And a pressing member 424 slidably inserted into the pressing block 422.

The support block 421 is coupled to the jaw 411 of the hydraulic chuck 410 is moved together with the jaw 411 in the operation of the hydraulic chuck 410.

The pressure block 422 is elastically supported by the support block 421 by the spring 423 and the outer peripheral surface of the sleeve 20 in the assembly disposed in the caulking position by the support block 421 during operation of the hydraulic chuck 410 Pressurized to contact. Therefore, a mounting surface 422a which is in surface contact with the outer circumferential surface of the sleeve 20 may be formed on one side of the pressing block 422. A slide hole 422b penetrated toward the center of the hydraulic chuck 410 is formed inside the pressure block 422. The pressing member 424 is slidably inserted into the sliding hole 422b. In addition, a slide guide 422c slidably inserted into the support block 421 is formed at the other side of the pressure block 422 so that the pressure block 422 can be slidably coupled to the support block 421. . The slide guide 422c has a circular rod shape and is provided in two places to be spaced apart from the side on the other side of the pressing block 422. The spring 423 is fitted to the slide guide 422c.

The pressing member 424 functions as a punch for pressing the sleeve 20. The pressing member 424 is usually inserted into the slide hole 422b toward the center of the hydraulic chuck 410, and the side toward the support block 421 protrudes out of the slide hole 422b. In order to maintain this state, the other end portion of the pressing member 424 is formed with a locking portion 424a having an outer diameter extending therebetween, and a compression coil spring 425 between the locking portion 424a and the pressing block 422. ) Is interposed.

By the above configuration, the caulking unit 400 has the support block 421 together with the jaw 411 when the hydraulic chuck 410 is operated to move to the center of the hydraulic chuck 410 of FIG. As shown in FIG. 6, the pressure block 422 is in contact with the outer circumferential surface of the sleeve 20 in the assembly disposed at the caulking position, and then the support block (422) is in contact with the outer circumferential surface of the sleeve 20. As the 421 presses the pressing member 424 while continuously moving toward the center of the hydraulic chuck 410 while compressing the spring 423, the pressing member 424 as shown in FIG. Protruding from the sliding hole 422b of the pressure block 422 is pressed to the coupling portion 12 of the bolt 10 by pressing the sleeve 20 in the assembly disposed in the caulking position.

As a result, the caulking unit 400 is fixed to the assembly by contacting the pressure block 422 first contact with the sleeve 20 during the operation of the hydraulic chuck 410, and then the pressing member 424 is the sleeve of the sleeve 20 ( By pressing the outer circumferential surface of the 20 to compress the sleeve 20 to the coupling portion 12 of the bolt 10 it is possible to stably cock the assembly fixed by the pressure block 422.

On the other hand, in the embodiment of the present invention, the pressing member 424 is installed to be adjustable in position by the adjustment bolt 426 screwed to the support block 421. The adjustment bolt 426 is provided to pass through the support block 421, one end is in contact with the pressing member 424, the other end is formed with a head or knob for rotation. As a result, the user can adjust the position of the pressing member 424 by rotating the adjusting bolt 426 using the head or knob of the adjusting bolt 426, and thus the pressing member 424 during the operation of the hydraulic chuck 410. By controlling the length protruding from the sliding hole 422b of the pressing block 422, the pressing member 424 can adjust the depth to press the sleeve 20.

In the above description of the present invention with reference to the accompanying drawings, the "blind bolt automatic assembly and caulking device having a specific shape and structure" mainly described, but the present invention can be variously modified and changed by those skilled in the art, such variations and Changes should be construed as falling within the protection scope of the present invention.

100; First transfer section 110; turntable
111; Motor 112; Index Plate
120; Insertion hole 130; Support Plate
200; Assembly unit 210; Pressure member
220; Pressurized cylinder 230; Support member
300; Second transfer section 310; Advance Guide
320; Retraction member 330; Regression Drive
340; Lifting guide 350; Lifting member
360; Elevating unit 370; Supply clamp
380; Discharge clamp 400; Caulking part
410; Hydraulic chuck 411; article
420; Crimping section 421; Support block
422; Pressure block 422a; Seating surface
422b; Glide 422c; Slide guide
423; Spring 424; Crimping Member
424a; Locking portion 425; Compression Coil Springs
426; Adjusting bolt

Claims (6)

A bolt (10) having a male screw portion (11) and a coupling portion (12) formed at one end of the male screw portion (11) and a head (13) formed at one end of the coupling portion (12); And a sleeve having a body 21 fitted into the coupling portion 12 of the bolt 10 by indentation and a flange 22 protruding outwardly from an end facing away from the head 13 in the body 21. (20); for assembling and caulking blind bolts comprising,
A first transfer part (100) for transferring the provisional assembly in which the sleeve (20) is fitted to the male screw portion (11) of the bolt (10) to an assembly position;
Assembly to press the coupling portion 12 of the bolt 10 to the sleeve 20 by pressing the head 13 of the bolt 10 toward the sleeve 20 in the temporary assembly transferred to the assembly position Part 200;
A second transfer part (300) for transferring the assembly press-fitting the coupling portion (12) of the bolt (10) to the caulking position; And
And a caulking unit 400 for pressing the outer circumferential surface of the sleeve 20 to the coupling unit 12 in the assembly transferred to the caulking position to compress the sleeve 20 to the coupling unit 12. Automatic blind bolt assembly and caulking device characterized in that.
The method of claim 1,
The first transfer unit 100 is
A turntable (110) comprising a motor (111) and an index plate (112) rotated by the motor (111);
It is arranged along the circumference of the index plate 112, and is formed to penetrate up and down so that the sleeve 20 of the temporary assembly can be inserted, respectively, so that the flange 22 of the sleeve 20 can be caught and fixed to the upper side A plurality of insertion holes 120; And
A support plate 130 installed below the index plate 112 to support the head 13 of the bolt 10 inserted into the sleeve 20 while the temporary assembly is transferred to the assembly position. Automatic blind bolt assembly and caulking device characterized in that.
The method of claim 2,
The assembly unit 200
A pressure member (210) installed below the index plate (112) and having the head (13) of the bolt (10) in the provisional assembly reaching the assembly position;
A pressure cylinder 220 for pressing the pressing member 210 upward; And
And a support member 230 installed above the index plate 112 and supporting the flange 22 of the sleeve 20 in the provisional assembly reaching the assembly position. Automatic assembly and caulking device.
The method of claim 2,
The second transfer unit 300 is
A retreat guide 310 installed above the caulking part 400 to extend in a direction from the assembly part 200 toward the caulking part 400;
A retraction member 320 installed to retreat along the retraction guide 310;
A retreat driving part 330 during the retreat operation of the retreat member 320;
An elevating guide 340 installed to extend upward and downward on the advance member 320;
An elevating member 350 installed to elevate along the elevating guide 340;
An elevating driving part 360 for elevating the elevating member 350;
It is installed on one side of the elevating member 350, and the index plate 112 is rotated to grip the male screw portion 11 of the bolt 10 in the assembly that is out of the assembly position to be supplied to the caulking position Supply clamp 370; And
And a discharge clamp 380 installed at the other side of the elevating member 350 and holding the assembly disposed at the caulking position and discharging it to the outside of the caulking unit 400. Assembly and caulking device.
The method according to any one of claims 1 to 4,
The caulking unit 400
A hydraulic chuck 410 having a plurality of jaws 411 arranged radially thereon; And
Automatic assembly and caulking blind bolts, characterized in that it comprises a; pressing portion 420, respectively installed in each jaw (411) of the hydraulic chuck (410).
The method of claim 5,
The pressing part 420 is
A support block 421 coupled to an upper surface of the jaw 411;
The support block 421 is slidably installed toward the center of the hydraulic chuck 410, the mounting surface 422a which is in contact with the outer peripheral surface of the sleeve 20 is formed on one side, the inner A pressure block 422 having a sliding hole 422b penetrated toward the center of the hydraulic chuck 410;
A spring 423 interposed between the support block 421 and the pressure block 422; And
It comprises a; pressing member 424 slidably inserted into the sliding hole 422b of the pressure block 422,
The pressure block 422 is pressed to contact the outer peripheral surface of the sleeve 20 when the hydraulic chuck 410 is operated,
The pressing member 424 is the sliding hole by the support block 421 which is continuously moved toward the center of the hydraulic chuck 410 after the pressing block 422 is in contact with the outer peripheral surface of the sleeve 20 ( 422b) is pressed to protrude from the blind bolt automatic assembly and caulking device, characterized in that for pressing the coupling portion (20).

Images