KR101658814B1 - Apparatus for assembling protective tube and coil spring - Google Patents

Apparatus for assembling protective tube and coil spring Download PDF

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Publication number
KR101658814B1
KR101658814B1 KR1020150135105A KR20150135105A KR101658814B1 KR 101658814 B1 KR101658814 B1 KR 101658814B1 KR 1020150135105 A KR1020150135105 A KR 1020150135105A KR 20150135105 A KR20150135105 A KR 20150135105A KR 101658814 B1 KR101658814 B1 KR 101658814B1
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KR
South Korea
Prior art keywords
coil spring
power transmission
feeding
transmission shaft
unit
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Application number
KR1020150135105A
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Korean (ko)
Inventor
김진영
유한덕
지무근
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대원강업주식회사
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Priority to KR1020150135105A priority Critical patent/KR101658814B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D65/00—Designing, manufacturing, e.g. assembling, facilitating disassembly, or structurally modifying motor vehicles or trailers, not otherwise provided for
    • B62D65/02—Joining sub-units or components to, or positioning sub-units or components with respect to, body shell or other sub-units or components
    • B62D65/12—Joining sub-units or components to, or positioning sub-units or components with respect to, body shell or other sub-units or components the sub-units or components being suspensions, brakes or wheel units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D65/00—Designing, manufacturing, e.g. assembling, facilitating disassembly, or structurally modifying motor vehicles or trailers, not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P2700/00—Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
    • B23P2700/50—Other automobile vehicle parts, i.e. manufactured in assembly lines

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Wire Processing (AREA)

Abstract

An object of the present invention is to provide a coil spring protection tube assembly device for detecting a protection tube in a noncontact manner using a color sensor to accurately and reliably assemble the protection tube at a desired position. And an assembling device. In order to achieve the above object, the present invention provides a sprue support device comprising: a spring support for supporting a coil spring in a horizontal posture and moving a coil spring to a standby position and an assembly position; A first feeding unit for fitting a protective tube, which is assembled to one end of a coil spring transferred to an assembled position by the spring support, into a coil spring through a rotation operation of two first feeding rollers; A second feeding roller disposed adjacent to the first feeding unit to receive a protective tube fitted to the coil spring by the first feeding unit, Feeding unit; And a sensor unit for sensing the protection tube and generating a signal when the protection tube reaches a target position, wherein the sensor unit is configured to detect a position A finger unit coupled to the winding portion; And a color sensor connected to the finger unit to move together with the finger unit and generating a signal by sensing the color of the protective tube when the protective tube fitted to the coil spring reaches a desired position And the coil spring protection tube assembling device.

Description

[0001] The present invention relates to a coil spring protection tube assembly apparatus,

[0001] The present invention relates to an apparatus for assembling a protective tube to a coil spring used in a suspension device of an automobile, and more particularly to an apparatus for assembling a protective tube to a coil spring, And also to accurately recognize the position of the protective tube to be assembled to the coil spring, thereby improving the assembling precision of the protective tube.

Fig. 1 shows a structural view of a suspension of an automobile.

Generally, the automotive suspension system absorbs impacts or vibrations so that shocks or vibrations generated during vehicle operation are not transmitted to a vehicle body or a passenger. The shock absorber cylinder 11 is provided with an upper pad 12 and a lower pad 13, A coil spring 14 is provided between the upper pad 12 and the lower pad 13 and a rubber spring 14 is formed on the inner surface of the upper pad 12 and the lower pad 13. [ And a spring pad 15 is provided.

The spring pads 15 provided on the inner surfaces of the upper pad 12 and the lower pad 13 prevent direct contact of the coil springs 14 with the upper pad and the lower pad, It is possible to reduce the damage and noise generated by the coil spring and to prevent the corrosion caused by the coating damage of the coil spring to prevent the life of the coil spring from being lowered.

However, there is a high risk that the spring pad will be damaged during repetitive compression and restoration due to the irregular direction and size load transmitted from the coil spring. When the spring pad is damaged, the coil spring is directly applied to the upper pad or the lower pad Not only noise is generated while the contact is made, but the impact is transmitted to the upper pad or the lower pad as it is, thereby damaging the upper pad or the lower pad.

In order to solve the above-mentioned problem, a separate protection tube is installed at the upper and lower ends of the coil spring.

2 shows a perspective view of a protective tube mounted on a coil spring.

The coil spring protection tube is formed by shaping a ring-shaped tube having an inner diameter corresponding to the diameter of the wire member constituting the coil spring.

In order to easily mount the protective tube on the coil spring, a cut-out portion is formed on the side surface of the protective tube so that the protective tube can be assembled with the coil spring in an open state. In this case, There is a high possibility that the coil spring and the protective tube may be damaged due to an increased possibility of flowing into the space between the protective tube and the coil spring.

Accordingly, the use of a protective tube having a structure in which a side portion is completely closed without a cut portion like the protective tube shown in Fig. 2 is increasing.

However, in the case of a protective tube whose side portion is completely sealed, the assembly is performed in a manner of forcibly fitting into the end portion of the coil spring. When the assembling operation of the protective tube is manually performed, However, since a large force is required to assemble each protection tube, there is a problem that continuous operation is impossible.

In view of such a problem, the present applicant has developed an assembling apparatus capable of automatically assembling a protective tube to a coil spring, and the assembling apparatus is disclosed in Japanese Laid-Open Patent Publication No. 10-2012-0051453.

3 is a front view showing a structure of a conventional coil spring tube assembling apparatus.

The coil spring tube assembling apparatus disclosed in the above-mentioned invention comprises a coil spring 14 vertically installed at an upper end thereof, a spring mount (not shown) for rotating the coil spring 14 about a vertical axis while rotating the drive shaft 21 A spring holding part 24 installed on the spring mounting table 22 for holding and fixing the side surface of the coil spring 14 by a plurality of support blocks 23, And a tube feeding part 26 for fitting a protective tube to the coil spring 14 through rotation of the two feeding rollers 25.

Such a conventional assembling apparatus has an advantage that a series of operations for assembling the protective tube can be automatically performed by simply setting the coil spring on the spring mounting table.

However, there is a case where the coil spring is collapsed and the operation is interrupted in the course of erecting the coil spring on the spring mount or in the process of assembling the protective tube, and the coil spring is fixed and released, There is a disadvantage that the time required to assemble one protective tube becomes longer as the operation of rotating the coil spring is required to be positioned between the rollers.

In addition, since the end of the coil spring is configured to be positioned between the two feeding rollers by the rotation operation of the spring mounting base, the assembly device is limited to only the linear coil spring having a straight extended structure so that both end portions have the same center point There is a problem that it can not be applied to a coil spring of a deformed shape in which the center of both end portions is not located on a straight line like a side rod coil spring.

The present applicant has developed a coil spring protection tube assembling apparatus having a more improved structure, and this assembling apparatus has been patented (Application No. 10-2014-0174727).

Fig. 4 is a perspective view of a conventional coil spring protection tube assembling apparatus, and Fig. 5 is a side view showing a structure of a sensor unit applied to a conventional coil spring protection tube assembling apparatus.

The coil spring protection tube assembling apparatus according to the patent application comprises a spring support 31, a first feeding unit 32, a second feeding unit 33, and a sensor unit 34.

The spring support 31 moves the coil spring to the standby position and the assembled position while moving the coil spring back and forth while moving the coil spring in a lying state.

The first feeding unit 32 is formed by inserting a protective tube welded to a coil spring moved to an assembling position by a spring support 31 into a coil spring, The assembling operation of the protective tube is performed using the two feeding rollers 32a rotating in the opposite direction.

The second feeding unit 33 further includes a protective tube inserted into the coil spring by the first feeding unit 32. The second feeding unit 33 is located adjacent to the first feeding unit 32, Similarly, the two feeding rollers 33a are used to insert the protective tube up to a preset position.

The sensor unit 34 is configured to generate a signal by sensing when the protection tube is fitted to a predetermined position and generating a signal by contact with the protection tube.

5, the sensor unit 34 includes a sensor dog 34a that rotates by contact with a protective tube when the protective tube reaches a predetermined position, and a sensor dog 34a that detects the rotation of the sensor dog 34a, And a detection sensor 34b for generating a detection signal.

In order for the sensor unit using the touch sensing method to generate a signal without error, stable contact between the sensor dog and the protective tube must be premised.

However, conventionally used protective tubes have a relatively thin thickness of about 1 mm, and it is not easy to always place the coil spring in a constant posture on the spring support, and the protective tube is assembled to the coil spring by the feeding unit There is a problem that the sensor dog and the protection tube are displaced to generate a signal frequently even though the protection tube is inserted to a desired position.

Open Patent Publication No. 10-2012-0051453 (published on May 22, 2012)

SUMMARY OF THE INVENTION The present invention has been accomplished in view of the above problems, and it is an object of the present invention to provide a coil spring protection device for detecting a protection tube in a noncontact manner using a color sensor, And a tube assembling device.

According to an aspect of the present invention, there is provided a coil spring for a coil spring having a horizontal posture, a spring support for moving a coil spring to a standby position and an assembling position, A first feeding unit for fitting a protective tube, which is assembled to one end of a coil spring transferred to an assembled position by the spring support, into a coil spring through a rotation operation of two first feeding rollers; A second feeding roller disposed adjacent to the first feeding unit to receive a protective tube fitted to the coil spring by the first feeding unit, Feeding unit; And a sensor unit for sensing the protection tube and generating a signal when the protection tube reaches a target position, wherein the sensor unit is configured to detect a position A finger unit coupled to the winding portion; And a color sensor connected to the finger unit to move together with the finger unit and generating a signal by sensing the color of the protective tube when the protective tube fitted to the coil spring reaches a desired position And the coil spring protection tube assembling device.

Meanwhile, in the coil spring protection tube assembling apparatus, the sensor unit may further include a bracket for supporting the finger unit and the color sensor, wherein the bracket includes: a fixing bracket fixed to the base frame; A rotating bracket having a structure rotatably coupled to a first rotating shaft provided in the fixing bracket so as to have a structure extending in a horizontal direction; A stopper provided on the fixing bracket to restrict a rotation angle of the rotation bracket; And a moving unit installed on the rotating bracket and coupled to the finger unit and the color sensor to move the finger unit and the color sensor in a direction toward or away from the coil spring.

The rotating bracket may include a first rotating bracket having a structure in which a lower end portion of the rotating bracket is coupled to the first rotating shaft and rotates around a first rotating shaft; A second rotating bracket coupled to an upper end of the first rotating bracket by at least one first position adjusting hole and a bolt having a rectangular shape extending in a vertical direction and whose height is adjusted within a range allowed by the first position adjusting hole; And a structure that extends in a horizontal direction and is coupled to a second rotation shaft provided at an upper end portion of the second rotation bracket so as to have a structure orthogonal to the first rotation axis and rotates around a second rotation axis, And a third rotating bracket coupled to the second rotating bracket by bolts and supporting the moving unit, the second position adjusting hole forming a structure of an arc centered on the rotating shaft.

In the above-described coil spring protection tube assembling apparatus, the finger unit may include a pair of V-grooves having a V-groove in which the winding unit is inserted, And an air chuck that includes a set of air chucks.

Meanwhile, in the coil spring protection tube assembling apparatus, the spring support base may include: a base block fixedly mounted on the base frame; A base plate coupled to the guide rail provided at the upper end of the base block and having a structure that moves in the forward and backward directions and having a seating groove on which the coil spring is seated; A fixing block installed to have an upright structure at a rear end of the base plate and inserted into a center portion of a coil spring placed in the seating groove to be coupled with a coil spring, And fixing means provided on the base plate for fixing the coil spring placed in the seating groove.

Meanwhile, in the coil spring protection tube assembling apparatus, the first feeding unit may include two first feeding rollers each having an elongated concave depression at the center thereof; A first motor for generating power for rotation of the first feeding roller; A first power transmission shaft connected to any one of the first feeding rollers of the two first feeding rollers and the first motor to rotate together with the first feeding roller and having a universal joint at the center; And a second power transmission shaft coupled to the first power transmission shaft via two gears, the first power transmission shaft and the first power transmission shaft being rotated together with the first power transmission shaft, A second power transmission shaft having a joint; And a first position adjusting cylinder for connecting the first power transmission shaft and the second power transmission shaft to each other and connecting the sections between the universal joint and the feeding roller so that the two first feeding rollers are gathered or spread between the winding sections, ; ≪ / RTI >

Meanwhile, in the coil spring protection tube assembling apparatus, the second feeding unit may include two second feeding rollers each having an elongated concave-depressed central portion; A second motor for generating power for rotation of the second feeding roller; A third power transmission shaft connected to the second feeding roller and the second motor of the two second feeding rollers to rotate together with the second feeding roller and having a universal joint at the center; And a third power transmission shaft coupled to the third power transmission shaft via the second power transmission shaft and rotatable with the third power transmission shaft. The second feeding roller is connected to the second feeding roller and rotates together with the second feeding roller, A fourth power transmission shaft having a joint; And a second position adjusting cylinder that connects the third power transmission shaft and the fourth power transmission shaft and interconnects the sections between the universal joint and the feeding roller so that the two second feeding rollers are gathered or spread across the winding section, ; ≪ / RTI >

According to the present invention having the above-described features, it is possible to stably detect that the protection tube is inserted at a desired position, since the method of sensing the protection tube by the non-contact method using the color sensor, It is possible to reduce the assembling defect rate of the product and improve the quality of the product by increasing the assembling precision.

In addition, the finger unit connected to act with the color sensor is coupled to the coiled portion of the coil spring, so that the color sensor can always be positioned at a certain position of the coiled portion regardless of the posture of the coiled spring, It is effective.

1 is a structural view of a suspension of an automobile,
2 is a perspective view of a protective tube mounted on a coil spring,
3 is a front view showing a structure of a conventional coil spring tube assembling apparatus,
4 is a perspective view of a conventional coil spring protection tube assembling apparatus,
5 is a side view showing a structure of a sensor unit applied to a conventional coil spring protection tube assembling apparatus,
FIG. 6 is a perspective view of a coil spring protective tube assembling apparatus according to a preferred embodiment of the present invention,
7 is a front view of a coil spring protection tube assembling apparatus according to a preferred embodiment of the present invention.
8 is a side view of a coil spring protective tube assembling apparatus according to a preferred embodiment of the present invention,
9 is a plan view of a coil spring protective tube assembling apparatus according to a preferred embodiment of the present invention,
Figure 10 is a front view of a spring support according to the invention,
11 is a side view of a spring support according to the invention,
12 is a plan view of a spring support according to the present invention,
13 is a structural view of a first feeding unit according to the present invention;
14 is a front view of a supporting structure for adjusting the height of the first feeding unit according to the present invention,
15 is a plan view of a supporting structure for adjusting the height of the first feeding unit according to the present invention,
16 is a structural view of a second feeding unit according to the present invention;
17 is a perspective view of the sensor unit according to the present invention,
18 is a front view of the sensor unit according to the present invention,
19 is a side view of the sensor unit according to the present invention

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

7 is a front view of a coil spring protective tube assembling apparatus according to a preferred embodiment of the present invention, and FIG. 8 is a front view of the coil spring protective tube assembling apparatus according to a preferred embodiment of the present invention. FIG. 9 is a plan view of a coil spring protective tube assembling apparatus according to a preferred embodiment of the present invention. FIG. 9 is a side view of a coil spring protective tube assembling apparatus according to a preferred embodiment.

The apparatus for assembling a coil spring protective tube according to the present invention automatically assembles the protective tube assembled to the coil spring by using a plurality of feeding rollers while fixing the coil spring transferred to the assembling position as it is, The spring supporting table 100, the first feeding unit 200, the second feeding unit 300, and the sensor unit 400 can be detected by the non-contact method using the color sensor 420 .

The spring support 100, the first feeding unit 200, the second feeding unit 300 and the sensor unit 400 all have the base frame 500 forming the base structure of the coil spring protective tube assembling device, And the first and second feeding units 200 and 300 are disposed on one side of the upper surface 500a of the base frame 500 and the upper surface 500a of the base frame 500 of the spring support 100 And the sensor unit 400 is disposed to be positioned between the first and second feeding units 200 and 300 and the spring support 100.

FIG. 10 is a front view of a spring support according to the present invention, FIG. 11 is a side view of a spring support according to the present invention, and FIG. 12 is a plan view of a spring support according to the present invention.

The spring support 100 supports the coil spring to be assembled with the protective tube in a horizontal posture and also moves to a standby position and an assembling position of the coil spring. The spring block 100 includes a base block 110, a base plate 120, A block 130, and a fixing means 140.

The base block 110 is fixed to the base frame 500 and a guide rail 111 for supporting the movement of the base plate 120 is installed at an upper end.

The base plate 120 is formed of a horizontal flat plate member and has a plurality of guide blocks 121 which are coupled to the guide rails 111 and move along the guide rails 111, A plurality of support blocks 122 are formed to form a seating groove 123 having a substantially V-shaped cross-sectional structure so that the coil springs are seated in a horizontal posture.

For example, the support block 122 has an inclined surface 122a formed at one corner thereof, and the inclined surfaces 122a are gathered to form a seating groove 123 having a V-shaped cross-sectional structure.

The fixed block 130 supports a coil spring coupled with a coil spring placed in the seating groove 123 and has a block body 131 installed to have an upright structure at the rear end of the base plate 120, And an insert 132 installed in the block body 131 to be inserted into the center of the rear end of the coil spring and coupled with the coil spring.

Meanwhile, the insert 132 is installed on one side of the block body 131 so as to be movable in the vertical direction, and has a structure capable of adjusting the height.

According to the structure of the fixing block 130, since the position of the insert 132 can be adjusted according to the diameter of the coil spring, it is easy to cope with various coil springs having different shapes.

The fixing means 140 fixes a coil spring to be placed in the mounting groove 123 and is composed of a fixing cylinder 141 and a fixing arm 142.

The fixing cylinder 141 is fixed to the center of the bottom surface of the base plate 120 and is arranged to have a structure that is expanded and contracted in a direction parallel to the longitudinal direction of the coil spring.

The fixing arm 142 is coupled to the base plate 120 so as to be rotatable at the center thereof. The lower end of the fixing arm 142 is connected to the fixing cylinder 141. The upper end of the fixing arm 142 protrudes upward from the base plate 120. One of the plurality of winding portions provided in the coil spring is fixed while rotating in correspondence with the expansion and contraction operation of the cylinder 141 for use.

Reference numeral 151 shown in FIG. 12 is a detecting piece installed on a side surface of the base plate 120 to move together with the base plate 120. Reference numeral 152 denotes a detecting spring And a detection sensor provided on the base frame 500 for detecting the detection piece 151 and generating a signal when the detection piece 151 is transferred to the position.

FIG. 13 is a structural view of a first feeding unit according to the present invention, FIG. 14 is a front view of a supporting structure for adjusting the height of a first feeding unit according to the present invention, Lt; RTI ID = 0.0 > a < / RTI > support structure for adjustment.

The first feeding unit 200 is formed by fitting a protective tube, which is assembled to an end portion of a coil spring conveyed to an assembling position by a spring support 100, into the coil spring more deeply. The first feeding roller 211, A first motor 220, a first power transmission shaft 230, a second power transmission shaft 240, and a first position adjustment cylinder 250.

The first feeding rollers 211 and 212 are formed in an elongated shape having a central concave depression, and two grooves 211a and 212a are formed so as to face concave grooves 211a and 212a with a coiled portion of the coil spring interposed therebetween.

The first motor 220 generates power for rotating the two first feeding rollers 211 and 212.

The first power transmission shaft 230 is provided to connect the first motor 220 to any one of the first feeding rollers 211. When the first motor 220 is operated, And has a rotating structure.

A universal joint 231 is provided at the center of the first power transmitting shaft 230. According to this structure, the portion connected to the first feeding roller 211 is bent with respect to the universal joint 231, The roller 211 is moved.

The second power transmission shaft 240 is coupled to the first power transmission shaft 230 via two gears 261 and 262 to rotate in a direction opposite to the first power transmission shaft 230, And has a structure that is connected with a first feeding roller 212 and rotates together.

The universal joint 241 is also provided at the center of the second power transmission shaft 240.

The first position adjusting cylinder 250 connects the first power transmitting shaft 230 and the second power transmitting shaft 240 so that the interval between the universal joint and the first feeding roller is mutually connected, (211, 212) are moved so as to gather or spread through the winding portion.

The first feeding unit 200 configured as described above is installed in the support structure 600 provided on the upper side of the upper side of the base frame 500 and has a structure capable of adjusting the height.

More specifically, the support structure 600 includes a pair of vertical rails 610, a bracket 630 having guide blocks 620 coupled to the two rails 610 and moving along the rails, Is coupled to the first feeding unit 200 and the bracket 630 is coupled with the screw 650 rotated by the handle 640 provided in the support structure 600 to move up and down to the first feeding unit 200).

16 is a structural view of a second feeding unit according to the present invention.

The second feeding unit 300 is disposed adjacent to the first feeding unit 200 and fits the protection tube inserted into the coil spring by the first feeding unit 200 to a desired position. The second motor 320, the third power transmission shaft 330, the fourth power transmission shaft 340, and the second position adjusting cylinder 350. The feeding roller 311, 312, the second motor 320, the third power transmitting shaft 330,

The second feeding rollers 311 and 312 have a long rectangular shape and are formed of two pieces.

The third power transmission shaft 330 is installed to connect the second motor 320 with any one of the second feeding rollers 311 and has a universal joint 331 at the center thereof.

The fourth power transmission shaft 340 is installed to connect the second motor 320 to the second feeding roller 312 and has a universal joint 341 at the center thereof.

The second position adjusting cylinder 350 connects the third power transmitting shaft 330 and the fourth power transmitting shaft 340 so that the interval between the universal joint and the second feeding roller is mutually connected, (311, 312) are moved to gather or spread across the winding section.

The second feeding roller 311 and 312, the second motor 320, the third power transmission shaft 330, the fourth power transmission shaft 340, and the second positioning cylinder 350, The second feeding unit 300 is different from the first feeding unit 200 in the installation position, but the actual operation structure is the same as that of the first feeding unit 200, so that a detailed description of the second feeding unit 300 will be omitted .

FIG. 17 is a perspective view of the sensor unit according to the present invention, FIG. 18 is a front view of the sensor unit according to the present invention, and FIG. 19 is a side view of the sensor unit according to the present invention.

The sensor unit 400 senses the protective tube in a non-contact manner to generate an assembly completion signal when the protective tube P reaches a target position by the operation of the second feeding unit 300, A color sensor 420, and a bracket 430.

The finger unit 410 is coupled to the coil spring S so that the sensor unit 400 can always be positioned at a predetermined position with respect to the coiled portion of the coil spring. The finger unit 410 includes a pair of coils (411, 412).

On the other hand, the air chuck is already widely used, and a description of the operation principle of the air chuck is omitted.

In the air chuck according to the present invention, V-grooves 411a and 412a are formed in the side surfaces of the two sets 411 and 412 for inserting the coil springs of the coil springs. The two sets 411 and 412, The two V grooves 411a and 412a meet to form a binding space for wrapping the winding portion.

The color sensor 420 is disposed to be positioned below the finger unit 410 when the protection tube is inserted into a desired position and generates a signal. Unit 410 as shown in FIG.

Since the color sensor 420 has already been commercialized in various products, a detailed description of the color sensor 420 will be omitted.

The bracket 430 supports the finger unit 410 and the color sensor 420 and supports the finger unit 410 and the color sensor 420 so as to have an upright structure in the base frame 500 , And the finger unit 410 and the color sensor 420 can be moved together with the coil spring within a predetermined range.

The bracket 430 according to the present invention is composed of a fixing bracket 431, a rotation bracket 432, a stopper 433, and a moving means 434.

The fixing bracket 431 is fixed to the base frame 500 and includes a fixing portion 4311 fixed to the base frame 500 and a fixing portion 4311 formed to have an upright structure from the fixing portion 4311, And a support portion 4312 having a coupling groove 4312a into which the lower end of the bracket 432 is inserted and a first rotation shaft 435 which horizontally traverses the coupling groove 4312a.

The coupling groove 4312a has a structure in which both right and left side surfaces are opened, and the first rotation shaft 435 has a structure extending in a direction parallel to the Y axis of the assembling device.

The rotation bracket 432 rotates about the first rotation axis 435 so that the finger unit 410 and the color sensor 420 can move together with the coil spring in the X axis direction, And is coupled to the first rotation shaft 435 while being inserted into the groove 4312a and rotated.

According to a preferred embodiment of the present invention, the rotation bracket 432 includes a first rotation bracket 4321, a second rotation bracket 4322, and a third rotation bracket 4323.

The first rotating bracket 4321 is a flat plate member arranged in a vertical structure and has a structure in which the lower end is coupled to the first rotating shaft 435 while being inserted into the engaging groove 4312a and rotated.

The second rotating bracket 4322 is formed of a flat plate member arranged in a vertical structure and has a structure in which the lower end is coupled with the first rotating bracket 4321 and rotated together with the first rotating bracket 4321.

A first position adjustment hole 4324 having a rectangular shape extending in the vertical direction is formed at the lower end of the second rotation bracket 4322 and the first position adjustment hole 4324 and the first rotation bracket 4321 are passed through The first rotating bracket 4321 and the second rotating bracket 4322 are combined by a bolt B1 fastened to the nut so as to be adjustable in height.

A first fastening hole 4325 is formed at the upper end of the second rotating bracket 4322 to fasten a second rotating shaft 436 that rotatably supports the third rotating bracket 4323. And a second position adjusting hole 4326 extending to have a circular arc structure centering on the second position adjusting hole 4325 is formed.

The third rotating bracket 4323 is coupled to the second rotating bracket 4322 via the second rotating shaft 436 and is installed to be rotatable around the second rotating shaft 436, 4323 to the second rotation bracket 4322 by bolts B2 which are inserted through the second positioning holes 4326 and fastened with separate nuts.

The bracket 430 according to the present invention having the above-described structure rotates about the first rotation axis 435 and the third rotation bracket 432 about the second rotation axis 436, The position of the finger unit 410 and the color sensor 420 can be widely adjusted by rotating the second rotating bracket 4322 and adjusting the height of the second rotating bracket 4322. Therefore, .

The stopper 433 limits the rotation angle of the rotation bracket 432 provided on the fixing bracket 431 and has a flat U-shaped structure. The center portion of the rotation bracket 432 is fixed to the fixing bracket 431, And extend in the left and right directions of the support portion 4312 of the support portion 431 and are spaced apart from each other in parallel with the left and right sides of the support portion 4312.

A stopper bolt B3 for restricting the rotation angle of the rotation bracket 432 is fixed to both ends of the stopper 433 while the stopper bolt 43 is in contact with the rotation bracket 432. Each of the stopper bolts B3, The end of the stopper 433 is inwardly protruded from the outside of the stopper 433 and comes into contact with the rotation bracket 432.

Therefore, by adjusting the fastening degree of the stopper bolt B3, the rotation angle range of the rotation bracket 432 can be easily adjusted so that the length of the stopper bolt B3 projected to the inside of the stopper 433 is adjusted .

The moving means 434 is attached to the upper end of the rotation bracket 432 and more specifically to the third rotation bracket 4323 and is coupled to the finger unit 410 and the color sensor 420 to rotate the finger unit 410 and the color Thereby moving the sensor 420 in the direction approaching or moving away from the coil spring.

The moving unit 434 may be configured as an air cylinder and may include a finger unit 410 and a color sensor 420 for stable movement of the finger unit 410 and the color sensor 420 by the moving unit 434, (420) is coupled to the third rotating bracket (4323) via a guide (440).

The process of assembling the protective tube to the coil spring using the apparatus for assembling the coil spring protective tube according to the present invention will be described.

First, an adhesive is injected into the inside of the protective tube, and the tip of the coil spring is partially inserted into the protective tube thus prepared, so that the protective tube and the coil spring are held together.

The coil spring with the protective tube assembled as described above is placed in a horizontal posture in the seating groove 123 provided in the spring support 100. The insert 132 formed on the fixing block 130 of the spring support 100 is inserted into the coil spring 100, So that it is inserted into the rear end of the spring.

The worker moves the spring support 100 to move the coil spring to the assembling position. In this process, the fixing cylinder 141 provided at the lower end of the spring support 100 operates to move the fixing arm 142 And the upper end of the fixing arm 142 is caught by the coiled portion of the coil spring, thereby fixing the coil spring.

When the coil spring is transferred to the assembled position by the movement of the spring support 100, the first positioning cylinder 250 is operated by the signal generated from the sensing sensor 152, 211 and 212 are moved so as to be in close contact with the protective tube assembled to the coil spring and the first feeding roller 211 and 212 are rotated by operating the first motor 220. The operation of the first feeding unit 200 The protection tube is fitted more deeply into the coil spring.

Meanwhile, the second feeding unit 300 starts operation with a time difference from the first feeding unit 200, and more specifically, the second position adjusting cylinder 350 operates to feed the two feeding rollers 311 and 312 And the second feeding roller 311 and 312 are rotated by operating the second motor 320. By the operation of the second feeding unit 300, the protective tube is moved to the target position .

Meanwhile, the sensor unit 400 operates independently of the assembling operation of the protective tube, when the coil spring is transferred to the assembled position and a signal is generated from the sensor 152, the sensor unit 400 moves together with the coil spring, Is assembled to a desired position, the color of the protective tube previously input is sensed to generate an assembly completion signal.

More specifically, when a signal is generated from the detection sensor 152, a cylinder constituting the movement means 434 is actuated to move the finger unit 410 and the color sensor 420 in the direction approaching the coil spring.

Then, the air chuck is operated so that the two sets 411 and 412 provided on the air chuck hold the predetermined winding portion among the winding portions provided in the coil spring and fix the coil portion to the coil spring.

The bracket 430 supporting the finger unit 410 and the color sensor 420 moves along with the coil spring within the allowable range of the finger unit 410 and the color sensor 420, The color sensor 420 is positioned at a specific position of the winding part and waits for the protective tube to be assembled to a desired position even if slight changes occur in the posture of the coil spring during the assembling process of the protective tube.

As described above, in the coil spring protective tube assembling apparatus according to the present invention, the protection tube is inserted into a desired position only by the operation of the first and second feeding units 200 and 300 while maintaining the state in which the coil spring is laid horizontally. The movement of the coil spring can be minimized to shorten the working time compared to the prior art, and an operation interruption due to the coil spring can be prevented in advance.

The finger unit 410 and the color sensor 420 constituting the sensor unit 400 are always positioned at a predetermined position on the coiled portion of the coil spring irrespective of the movement of the coil spring, It is possible to lower the incidence of defective assembling of the protective tube and to improve the quality by uniformizing the assembling position.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims and their equivalents. Of course, such modifications are within the scope of the claims.

Description of the Related Art
100: spring support 110: base block
111: guide rail 120: base plate
121: guide block 122: support block
123: seat groove 130: stationary block
131: block body 132: insert
140: fixing means 141: fixing cylinder
142: fixing arm 200: first feeding unit
211, 212: first feeding roller 220: first motor
230: first power transmission shaft 240: second power transmission shaft
250: first positioning cylinder 300: second feeding unit
311, 312: second feeding roller 320: second motor
330: third power transmission shaft 340: fourth power transmission shaft
350: second position adjusting cylinder 400: sensor unit
410: finger unit 411, 412:
420: color sensor 430: bracket
431: Fixing bracket 432: Rotation bracket
4321: first rotating bracket 4322: second rotating bracket
4323: third rotating bracket 4324: first position adjusting ball
4325: first fastening hole 4326: second position adjusting hole
433: Stopper 434: Moving means
435: first rotating shaft 436: second rotating shaft
500: Base frame

Claims (7)

A spring support for placing the coil spring in a horizontal posture and moving the coil spring to the standby position and the assembly position;
A first feeding unit for fitting a protective tube, which is assembled to one end of a coil spring transferred to an assembled position by the spring support, into a coil spring through a rotation operation of two first feeding rollers;
A second feeding roller disposed adjacent to the first feeding unit to receive a protective tube fitted to the coil spring by the first feeding unit, Feeding unit; And
And a sensor unit for sensing the protective tube and generating a signal when the protective tube reaches a desired position,
The sensor unit includes:
A finger unit coupled to one of the plurality of winding units provided in the coil spring; And
And a color sensor connected to the finger unit to move together with the finger unit and generating a signal by sensing the color of the protective tube when the protective tube fitted to the coil spring reaches a desired position The coil spring protection tube assembly device comprising: The method according to claim 1,
The sensor unit further includes a bracket for supporting the finger unit and the color sensor,
The bracket
A fixing bracket fixedly attached to the base frame;
A rotating bracket having a structure rotatably coupled to a first rotating shaft provided in the fixing bracket so as to have a structure extending in a horizontal direction;
A stopper provided on the fixing bracket to restrict a rotation angle of the rotation bracket; And
And moving means installed on the rotation bracket and coupled to the finger unit and the color sensor to move the finger unit and the color sensor in a direction approaching or departing from the coil spring. The method of claim 2,
The rotation bracket includes:
A first rotating bracket having a structure in which a lower end portion is coupled to the first rotating shaft and rotates about a first rotating shaft;
A second rotating bracket coupled to an upper end of the first rotating bracket by at least one first position adjusting hole and a bolt having a rectangular shape extending in a vertical direction and whose height is adjusted within a range allowed by the first position adjusting hole; And
And has a structure that has a structure extending in the horizontal direction and is coupled to a second rotation shaft provided at an upper end portion of the second rotation bracket so as to have a structure orthogonal to the first rotation axis and rotates around a second rotation axis, And a third rotating bracket coupled to the second rotating bracket by a bolt and supporting the moving unit by a second position adjusting hole and a bolt forming a structure of an arc centered on the first rotating bracket. The method according to claim 1,
The finger unit is constituted by an air chuck including a pair of troughs having a V groove in which a winding part is inserted in a side surface facing each other with a structure in which the finger units are gathered or opened while facing each other with a winding part to be coupled therebetween Wherein said coil spring protection tube assembling device comprises: The method according to claim 1,
The spring support includes:
A base block fixedly mounted on the base frame;
A base plate coupled to a guide rail provided at an upper end of the base block and having a structure that moves in a back and forth direction and having a seating groove on which a coil spring is seated;
A fixing block installed to have an upright structure at a rear end of the base plate and inserted into a center portion of a coil spring placed in the seating groove to be coupled with a coil spring, And
And fixing means provided on the base plate for fixing the coil spring placed in the seating groove. The method according to claim 1,
Wherein the first feeding unit comprises:
Two first feeding rollers each having an elongated rectangular concave depression at a central portion thereof;
A first motor for generating power for rotation of the first feeding roller;
A first power transmission shaft connected to any one of the first feeding rollers of the two first feeding rollers and the first motor to rotate together with the first feeding roller and having a universal joint at the center;
And a second power transmission shaft coupled to the first power transmission shaft via two gears, the first power transmission shaft and the first power transmission shaft being rotated together with the first power transmission shaft, A second power transmission shaft having a joint; And
A first position adjusting cylinder connecting the first power transmission shaft and the second power transmission shaft to each other to connect the gap between the universal joint and the feeding roller so as to move the first feeding roller between the winding part and the winding part; Wherein the coil spring protection tube assembly comprises: The method according to claim 1,
The second feeding unit includes:
Two second feeding rollers each having an elongated rectangular concave depression;
A second motor for generating power for rotation of the second feeding roller;
A third power transmission shaft connected to the second feeding roller and the second motor of the two second feeding rollers to rotate together with the second feeding roller and having a universal joint at the center;
And a third power transmission shaft coupled to the third power transmission shaft via the second power transmission shaft and rotatable with the third power transmission shaft. The second feeding roller is connected to the second feeding roller and rotates together with the second feeding roller, A fourth power transmission shaft having a joint; And
A second positioning cylinder connecting the third power transmission shaft and the fourth power transmission shaft and interconnecting the gap between the universal joint and the feeding roller to move the two second feeding rollers so that they are gathered or spread between the winding portions; Wherein the coil spring protection tube assembly comprises:
KR1020150135105A 2015-09-24 2015-09-24 Apparatus for assembling protective tube and coil spring KR101658814B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107336010A (en) * 2017-07-14 2017-11-10 成都天创精密模具有限公司 A kind of strut spring assembly equipment
CN108556453A (en) * 2018-05-04 2018-09-21 江苏坤泰机械有限公司 A kind of feeding roller fixed mechanism of dry compound machine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5548898A (en) * 1992-09-14 1996-08-27 Hoesch Suspensions, Inc. Method for providing a flexible covering for a portion of a tapered coil spring
KR20120051420A (en) * 2010-11-12 2012-05-22 대원강업주식회사 Apparatus for fitting a wrapping tube on coil spring
KR20120051453A (en) 2010-11-12 2012-05-22 대원강업주식회사 Apparatus for fitting a wrapping tube on coil spring
KR20140034973A (en) * 2012-09-11 2014-03-21 삼목강업주식회사 Protect tube semi-automatic assembling apparatus for car suspension device coil spring

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5548898A (en) * 1992-09-14 1996-08-27 Hoesch Suspensions, Inc. Method for providing a flexible covering for a portion of a tapered coil spring
KR20120051420A (en) * 2010-11-12 2012-05-22 대원강업주식회사 Apparatus for fitting a wrapping tube on coil spring
KR20120051453A (en) 2010-11-12 2012-05-22 대원강업주식회사 Apparatus for fitting a wrapping tube on coil spring
KR20140034973A (en) * 2012-09-11 2014-03-21 삼목강업주식회사 Protect tube semi-automatic assembling apparatus for car suspension device coil spring

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107336010A (en) * 2017-07-14 2017-11-10 成都天创精密模具有限公司 A kind of strut spring assembly equipment
CN107336010B (en) * 2017-07-14 2019-01-08 成都天创精密模具有限公司 A kind of strut spring assembly equipment
CN108556453A (en) * 2018-05-04 2018-09-21 江苏坤泰机械有限公司 A kind of feeding roller fixed mechanism of dry compound machine

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