KR101156376B1 - Apparatus for fitting a wrapping tube on coil spring - Google Patents

Abstract

The present invention relates to a coil spring tube assembling apparatus, the object of which is to implement a highly compatible automated assembly device for fitting a protective tube having a constant diameter along the winding direction from one end of the coil spring, in particular of the coil spring It provides a coil spring tube assembly device for a vehicle suspension that can efficiently perform tube fitting work in various sections such as upper and lower ends (volumes 0 to 1 or more) as well as intermediate portions (0.5 to 1 volume). Is in.
The present invention is a frame; A spring mounting stand installed at the center of the frame and rotatable by driving of a rotational drive unit and having a mounting hole on a top surface thereof for supporting a lower end of the spring; A spring holding part disposed around the spring mounting stand and supporting the spring mounted on the spring mounting stand in a vertical state; And a pair of feeding rollers provided at the output end toward the upper end of the spring fixedly supported from the spring holding part, and a pair of feeding rollers are in close contact with the tube side fastened to the upper end of the spring. The technical gist of the present invention relates to a coil spring tube assembly device including a tube feeding part configured to fit a tube in a winding direction by a rotational force of a feeding roller.

Description

Apparatus for fitting a wrapping tube on coil spring contact}

The present invention relates to a coil spring tube assembling apparatus, and more particularly, a vehicle suspension installed at an upper, lower, or middle predetermined portion of a coil spring used in a vehicle suspension device to prevent impact, noise, corrosion, etc. of the coil spring. The present invention relates to a coil spring tube assembly apparatus for an apparatus.

1 is an exemplary view showing a suspension of a conventional vehicle, mainly with the frame 4 and the axle 2 mounted below it to elastically maintain the axle 2 on which the wheel 3 is installed. The suspension device is provided between the upper spring seat 5 and the lower spring seat 7 on the frame 1 side and the axle 2 side, and the upper spring seat 5 and The coil spring 9 is loaded between the lower spring sheets 7 while the upper spring pad 6 and the lower spring pad 8 made of rubber are interposed therebetween. As a result, the coil springs 9 are formed from the upper spring pads 6 and the lower spring pads 8 interposed on the upper and lower ends of the coil springs 9 that are impacted from the upper spring sheets 5 and the lower spring sheets 7. To reduce the impact, noise, the coating of the coil spring (9) is peeled off to prevent the problem that the durability life due to the corrosion is lowered due to this.

However, the suspension device incorporates an upper spring pad 6 and a lower spring pad 8 on the inner surfaces of the upper spring sheet 5 and the lower spring sheet 7, which bind the upper and lower ends of the coil spring 9. Therefore, there was a problem that the pad is easily compressed and easily torn due to a weak impact, thereby losing its elasticity, and the upper and lower ends of the coil spring 9 are directly connected to the upper spring sheet 5 and the lower spring sheet 7 by the torn pad. In addition to the noise generated as well as the impact of the coil spring (9) is transmitted directly to the upper spring sheet (5) and the lower spring sheet (7) damages the upper spring sheet (5) and the lower spring sheet (7) There was a problem.

In order to solve this problem to some extent, a ring-shaped protective tube that is integrally coupled to the upper and lower ends of the coil spring is formed.

Figure 2 is an exemplary view showing such a conventional protective tube, the protective tube 100 is made of a ring shape having a constant diameter using a synthetic rubber, and through the plurality of air holes 200 up and down the outer periphery The tube fitting cutout 300 is formed in the longitudinal direction. The protective tube 100 is a series of fitting work for the upper, lower or middle predetermined portion of the coil spring by a manual operation by the operator, the inner periphery is opened around the tube fitting incision 300 ( V) After applying a strong adhesive to the inner surface, it is bonded so as not to be separated from the upper, lower or middle predetermined portion of the coil spring.

However, when the protective tube having the cut-out part is installed (coupled) to the coil spring, the surface of the tube is smoothly formed. Therefore, when it is used for a long time, dust or small sand is attached to the surface of the tube. Foreign matter attached to the surface of the penetrates into the tube through the incision formed in the longitudinal direction of the tube. In particular, the foreign matter penetrated into the tube is strongly in contact with the ring of the coil spring located above and below the tube when the coil spring is released, and the foreign substance penetrated into the tube penetrates deeper into the inner surface of the tube. Due to repeated contact with the infiltrating foreign matter, the protective tube is also easily torn and loses its function.

In addition, there is a problem that the protective tube having the cutout is distorted and deformed while some air inside the tube is discharged through the tube fitting cutout formed in the longitudinal direction. As the gap is shifted, a larger gap is formed, and through this expanded gap of the incision, more foreign matter easily penetrates, and more foreign matter easily penetrates and accumulates inside the tube whenever the tube is compressed and expanded. The tube has a problem that the elastic force is gradually dropped or lost.

On the other hand, in order to solve the problem of the protective tube having the incision, there is a case in which the protective tube is applied to a ring shape having a constant diameter excluding the incision.

By fitting the protective tube without the cut-out portion to the upper, lower, or middle predetermined portion of the coil spring, it is possible to significantly reduce the infiltration of foreign matter between the tube and the spring as described above. In the initial installation, the tube should be injected in parallel with the winding direction of the spring from the top or bottom of the spring.

As a result, the protection tube without the incision has a lot of time in the tube assembly process, which is made entirely by hand, despite the many advantages of protecting the tube and the spring from debris, reducing the efficiency of the spring assembly process, Moreover, the incidence of defective products was remarkably high because the position of the tube fitted to the spring was incorrect for each operator.

Therefore, the present invention is to solve the conventional problems as described above, the object of the present invention is to provide a coil spring tube assembly device for fitting the protective tube having a constant diameter from one end of the spring along the winding direction of the spring.

In addition, another object of the present invention is to provide a coil spring tube assembly device with excellent compatibility that can be performed to assemble the protective tube for a variety of springs (diameter, length, thickness) smoothly.

In addition, another object of the present invention is to smoothly fit the coil spring protection tube that needs to be fitted in the intermediate predetermined portion away from the upper or lower end of the spring so as not to interfere with other devices of the suspension such as shock absorbers. In providing a coil spring tube assembly that can be performed.

The present invention for achieving the above problems and to eliminate the conventional drawbacks frame;

A spring mounting stand installed at the center of the frame and rotatable by driving of a rotation driving unit, and having a mounting hole on an upper surface thereof for supporting a lower end of the spring;

A spring holding part disposed at a circumference of the spring mounting stand to fix and support the spring mounted on the spring mounting stand in a vertical state; And

The pair of feeding rollers provided at the output end is moved from the spring holding part to the upper end of the spring fixedly supported, and the pair of feeding rollers are in close contact with the tube side fastened to the upper end of the spring. It characterized in that the configuration comprising a; tube feeding portion for fitting the tube in the winding direction by the rotational force of the feeding roller.

In addition, the spring mounting unit comprises a positioning stopper for supporting the lower end surface of the spring mounted on the upper surface.

In addition, the spring holding portion, the operation cylinder is installed on the bottom of the center of the spring mounting unit for drawing the rod upward; It is arranged while maintaining the same spacing around the spring mounting stand, it may be composed of a plurality of support blocks that are enclosed with each other toward the side of the spring installed on the spring mounting stand by the operation of the operating cylinder, or close to each other and away from each other. have.

The tube feeding unit may further include a vertical transfer unit configured to move up and down the vertical movement block along a vertical rail of the vertical transfer base fixed to the frame; A horizontal transfer unit for horizontally moving a horizontal moving block along a horizontal rail of a horizontal moving base coupled to the vertical moving block; A tube gripping unit which closes or spaces the roller fixing blocks each of which the feeding rollers are axially coupled along the left and right rails of the gripping feed base coupled to the horizontal moving block; And Tube feeding unit for rotating the feeding roller coupled to the roller fixing block in a reverse direction to each other; It may be configured to include.

In addition, the tube feeding portion may be configured to include a position detection sensor for detecting the position of the upper end of the spring.

In addition, the tube feeding portion may be configured to include a tube detecting sensor for identifying the tube to be fitted to the upper end of the upper end of the spring as the sensing target.

In addition, it can be configured to include a height adjusting means for raising and lowering the spring mounting table from the frame.

From the above means, the present invention can exclude the manual work by the operator when fitting the protective tube having a constant diameter in the winding direction toward one end of the spring to manufacture a coil spring for a vehicle suspension device integral to the protective tube There is an advantage that can improve the efficiency of the process.

In addition, the present invention can be flexibly carried out the fitting operation of the protective tube having a constant diameter corresponding to various types of springs, such as diameter, length (height), thickness, there is an advantage that can secure a device with excellent compatibility will be.

In addition, the present invention is in close contact with the feeding roller to a predetermined working pressure on the side of the protective tube and by inserting the protective tube using the rotational force of the feeding roller, such as damage to the protective tube made of synthetic resin, rubber material, etc. Lowering the defective rate, there is an advantage that can improve the quality of the overall coil spring for vehicle suspension.

1 is an example showing a suspension of a conventional vehicle
Figure 2 is an example showing a conventional protective tube
Figure 3 is a front view of the tube assembly apparatus according to the present invention
Figure 4 is a front view illustrating the configuration of the spring mounting according to the present invention
5 is a front view illustrating the configuration and operating state of the spring holding portion according to the present invention
Figure 6 is an exemplary side view for showing the configuration of the tube feeding unit according to the present invention
7 is a front view illustrating the configuration of the tube feeding unit according to the present invention;
8 is a plan view showing the fitting process of the tube according to an embodiment of the present invention (vol. 0 to 1).
Figure 9 is an example of the coil spring produced by one embodiment of the present invention (vol. 0 to 1)
10 is a plan view showing the fitting process of the tube according to another embodiment of the present invention (vol. 0.5 to vol. 1).
11 is a plan view showing the fitting process of the tube according to another embodiment (vol. 0.5 to 1) of the present invention.
12 is an example of a coil spring produced by another embodiment of the present invention (vol. 0.5 to 1)

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

3 to 7, the two-axis rotary coil spring tube assembly according to the present invention includes a frame 10, a spring mounting table 20, a spring holding part 30, and a tube feeding part 40. .
For reference, the term "biaxial rotation" described in the name of the present invention is a combination of the rotational force of the coil spring by the spring mounting table 20, and the feeding roller rotational force configured in the tube feeding portion 40, the tube assembly work will be desired. It is written to emphasize that it can be performed.

More specifically, referring to FIGS. 3 and 4, the spring mounting stand 20 is installed at the center of the frame 10 to form a rotatable state by the driving of the rotation driving unit 23, and an upper surface of the spring 1 is provided. It is equipped with the mounting opening 21 in which a lower end is raised.

The spring mounting table 20 includes a positioning stopper 22 for supporting the lower end surface 1a of the spring 1 supported by the upper surface mounting hole 21. This positioning stopper 22 is set so that the upper end surface 1a of the spring 1, into which the tube is fitted, always stays in a certain position.

In addition, although not shown, the spring mounting table 20 may include a height adjusting means for moving up and down from the frame 10. Spring mounting table 20 having such a height adjusting means can adjust the height position of the spring (1) located on the upper surface of the frame 10 according to the type (height difference) of the coil spring.

The spring holding unit 30 is disposed around the spring mounting unit 20 and rotates in association with the spring mounting unit 20 rotating by the driving of the rotation driving unit 23. The spring mounting unit 20 is rotated. Closely pressurizes the four sides of the spring (1) mounted on the fixed support in a vertical state.

Referring to FIG. 5, the spring holding part 30 includes an operation cylinder 31 installed at the center bottom surface of the spring mounting stand 20 to pull out the rod 311 upwardly; It is arranged while maintaining the same distance around the spring mounting stand 20, the operation of the cylinder 31 is close to each other toward the side of the spring (1) installed in the spring mounting stand 20, or It may be composed of a plurality of support blocks 32 apart from each other.

Spring holding unit 30 according to an embodiment of the present invention, the operating cylinder 31 for pulling out the rod 311 through the hollow drive shaft 24 of the rotary drive unit 23 of the spring mounting table 20 and A guide rod 315 coupled to the lifting member 312 installed at the end of the rod 311 of the operation cylinder 31 and the lower surface of the spring mounting table 20 to guide the lifting member 312. And, one end of the middle hinge 313a engaging portion is coupled to the elevating member 312 and the other end is composed of a rotation bar 313 to which the support block 32 is coupled.

Preferably, the pressing surface of the support block 32 in close contact with the side surface of the spring 1 may be provided with a curved portion corresponding to the outer periphery of the spring 1 so as to secure a firm fixed bearing force against the spring 1. In this case, when the curved portion is formed, the curved portion having a small curvature is provided in consideration of compatibility with the type (diameter difference) of the spring 1.

In addition, the pressing member of the support block 32 in close contact with the side surface of the spring 1 may be further provided with a sheet member made of synthetic resin, rubber or the like to prevent damage such as scratches on the outer surface of the spring (1).

Referring to FIGS. 6 and 7, the tube feeding part 40 is disposed above the spring 1 mounted on the spring mounting unit 20, and the spring is fixedly supported from the spring holding part 20 ( A pair of feeding rollers 45 and 46 provided at the output end is moved toward the upper end of 1), and a pair of feeding rollers 45 are attached to the tube T fastened to the upper end of the spring 1. In the state in which the 46 is in close contact, the tube T is fitted into the winding direction of the spring 1 by the rotational force of the feeding rollers 45 and 46.

The tube feeding part 40 is a horizontal conveying unit 41 for raising and lowering a pair of driven rollers 45 and 46, and a horizontal for moving the pair of driven rollers 45 and 46 in left and right directions. To rotate the conveying unit 42, the tube holding unit 43 to close or space the pair of driven rollers 45 and 46, and the pair of driven rollers 45 and 46 in opposite directions to each other It includes a tube feeding unit 44.

That is, according to the exemplary embodiment of the present invention, the vertical transfer unit 41 includes a vertical transfer base 412 fixed to the frame 10 and a vertical transfer base 412 by driving the vertical transfer driver 411. It includes a vertical moving block 413 to move up and down along the vertical rail (4121) formed in the).

In addition, the horizontal transfer unit 42 is configured to be installed on the output of the vertical transfer unit 41, the horizontal transfer base 422 coupled to the vertical transfer block 413, the horizontal transfer drive unit 421 It includes a horizontal moving block 423 to move horizontally (left and right) along the horizontal rail (4221) formed in the horizontal transfer base 422 by the driving of.

In addition, the tube gripping unit 43 is configured to be installed at the output of the horizontal transfer unit 42, the gripping transfer base 432 coupled to the horizontal moving block 423 and the gripping drive unit 431 The roller fixing blocks 433 and 434 are adjacent to or spaced apart from each other along the left and right rails 4321 formed on the gripping feed base 432. At this time, feeding rollers 45 and 46 are axially coupled to the roller fixing blocks 433 and 434, respectively.

In addition, the tube feeding unit 44 rotates the feeding rollers 45 and 46, and the feeding rollers 45 are axially coupled to the roller fixing blocks 433 and 434 by the driving of the feeding drive unit 44, respectively. 46 are rotated in opposite directions.

The pair of feeding rollers 45 and 46 are disposed to face each other on both sides thereof with the tube T fastened to the upper end of the spring 1 interposed therebetween. A face is formed. At this time, in order to ensure the frictional force with the tube (T) that is fitted in the winding direction of the spring (1) during rotation may be formed in the concave-convex portion of the V-shaped.

At this time, the vertical transfer driving unit 411, the horizontal transfer driving unit 421, the grip driving unit 431, the feeding driving unit 44 which are constituted in the units 41, 42, 43, 44 of the tube feeding unit 40, respectively. ) May consist of an electric motor, a pneumatic or hydraulic cylinder.

In addition, the linear power transmission means of each of the units 41, 42, 43, 44 may be formed in various forms such as gear coupling method, sprocket / chain method, LM guide method.

In addition, the tube feeding portion 40 includes a position detecting sensor for detecting the position of the upper end of the spring (1). The position detection sensor is preferably a non-contact sensor such as an optical sensor to avoid interference with the feeding rollers 45, 46 located at the upper end of the spring (1).

In addition, the tube feeding portion 40 preferably includes a tube detecting sensor that can check the fitting degree of the tube (T) by using the upper end of the spring (1) to which the tube (T) is fitted. Can be. For these tube detection sensors, non-contact sensors such as vision sensors (color identification of springs and tubes) are recommended.

Referring to the operation of the coil spring tube assembly device according to the present invention having the configuration as described above and the tube fitting operation through the same as follows.

First embodiment

Referring to FIGS. 8 and 9, first, a case in which a tube T is inserted into a volume of 0 to 1 or more from one (upper) end of the coil spring will be described.

First, the lower end of the spring 1 is placed on the upper surface mounting opening 21 of the spring mounting stand 20, and the spring 1 is rotated to bring the lower end surface of the spring 1 into close contact with the positioning stopper 22. Fix it.

Thereafter, the driving cylinder 31 of the spring holding part 30 is operated (contracted), and the plurality of support blocks 32 arranged around the spring 1 in cooperation with the hinge 313a of the support 313 are coupled to each other. It rotates about the part and moves closely toward the four sides of the spring 1 to maintain the vertical state.

Thereafter, the operator slightly inserts one end of the tube T of a predetermined length (more than one volume) into the upper end surface 1a of the spring 1, and then the feeding rollers 45 and 46 of the tube feeding part 40 later. Tighten so that can be in close contact.

In this case, when the type (diameter, length) of the spring 1 is limited, the upper end surface of the spring 1 positioned from the spring mounting stand 20, the positioning stopper 22, and the spring holding part 30 is provided. The positional information in (1a) takes a state set in advance in the control panel.

That is, when the specifications of the spring 1 are previously input to the control panel, the spring mounting table 20, the positioning stopper 22, and the spring holding part 30 are connected to the upper end surface 1a of the spring 1. Location information is automatically set.

The pair of feeding rollers 45 and 46 provided at the output end of the tube feeding part 40 is moved toward the upper end of the spring 1 positioned as described above.

More specifically, the tube feeding unit 40 drives the vertical feed driving unit 411 and the horizontal feed driving unit 421 simultaneously and raises or lowers the pair of feeding rollers 45 and 46 and is spaced apart from each other. The upper end of the spring 1 is positioned between a pair of feeding rollers 45 and 46 forming a state. (See the first drawing of FIG. 8)

In this process of positioning the pair of feeding rollers 45 and 46 toward the upper end of the spring 1, the upper part of the spring 1 received through the position sensor and the tube sensor installed in the tube feeding part 40 The position information about the end is continuously checked, and the position of the feeding rollers 45 and 46 is corrected with respect to the upper end of the spring 1 based on this.

The reason for more accurately receiving the upper end information of the spring (1) using the sensor as described above is in close contact with both sides of the tube (T) during the fitting operation of the tube (T) using the rotational force of the feeding roller (45, 46). This is because the quality of the assembling process of the tube T can be ensured in the precisely adhered state of the feeding rollers 45 and 46 which are in the established state.

Thereafter, the tube holding unit 43 of the tube feeding unit 40 gripper 431 is operated to move the pair of roller fixing blocks 433 and 434 spaced apart from each other to the upper end of the spring 1. The feeding rollers 45 and 46 are brought into close contact with both sides of the tube T to which the fasteners are fastened. (See second figure in FIG. 8)

At this time, the gripping driving unit 431 of the tube holding unit 43 is to maintain a predetermined operating pressure continuously, the tube (T) and at the time of the rotation of the feeding roller 45, 46 for fitting the tube (T) afterwards It is possible to ensure a predetermined friction force against the contact surface of the feeding rollers (45, 46).

The tube feeding part 40 has a pair of feeding rollers 45 in a state in which a pair of feeding rollers 45 and 46 are in close contact with both sides of the tube T fastened to the upper end of the spring 1. ) 46 is rotated in the opposite direction and the tube (T) is pushed in the winding direction of the spring (1) to be gradually fitted. (See the third drawing in FIG. 8)

At this time, the control panel is to vary the fitting degree of the tube (T) according to the rotational speed and the rotation time of the tube feeding unit 44, that is, the feeding rollers (45, 46), according to the output of the tube feeding unit 44 The tube T of volumes 0 to 1 (normally the tube winding range) is fitted from the upper end of the spring 1, and at least one tube T from the continuous rotation of the tube feeding unit 44 as necessary. ) Can be fitted.

On the other hand, it is possible to set the degree of fitting of the tube (T) to be fitted from the output of the tube feeding unit 44 as described above, as in the embodiment of the present invention, the upper end of the spring (1) as the detection area The control panel receives the fitting information of the tube T in real time through the tube detection sensor, and based on this, the control panel may finally determine whether the tube feeding unit 44 is stopped.

As described above, after the fitting operation of the tube T is completed, the pair of feeding rollers 45 and 46 are spaced apart from the upper end of the spring 1 by the reverse control of the tube feeding unit 40 described above. The spring 1 is released from the spring mounting table 20 by releasing the holding part 30.

Figure 9 shows the coil spring (1) product manufactured by using the tube assembly device as described above, to integrate the tube (T) of 0 to 1 volume from the upper end surface (1a) of the spring (1) Coil spring 1 is shown.

Second embodiment

Referring to Figures 10 to 12, look at the case having a protective tube (T ") fitted in the 0.5 to 1 volume from one (upper) end of the coil spring,

As in the first embodiment described above, the spring 1 is maintained using the spring mounting table 20 and the spring holding part 30.

Thereafter, as in the first embodiment, one end of the tube T ″ of a predetermined length (0.5 volume) is slightly inserted into the upper end surface 1a of the spring 1, and then the feeding roller 45 of the tube feeding part 40 is provided. ) Is fastened so that 46 may be in close contact (see FIG. 10 first drawing).

Thereafter, as in the first embodiment, the pair of feeding rollers 45 and 46 provided at the output end of the tube feeding part 40 is moved toward the upper end of the positioned spring 1, and the spring 1 The feeding rollers 45 and 46 are brought into close contact with both sides of the tube T ″ fastened to the upper end, and the pair of feeding rollers 45 and 46 are rotated in opposite directions to each other to wind the spring 1. Push the tube (T ") in the direction is slowly fitting. (See second drawing in FIG. 10)

In this way, the tube detecting sensor is inserted into the tube (T ") while the tube (T") having a length of 0.5 turns from the continuous rotation of the feeding rollers (45) (46) toward the upper end of the spring (1). The movement length of) is detected in real time, the tube (T ") of a certain length (0.5 volume) is in the state of being fitted in the 0 to 0.5 volume from the upper end surface (1a) of the final spring (1). 10 see the third drawing)

Thereafter, the tube feeding part 40 is operated to stop the rotation of the pair of feeding rollers 45 and 46, and the pair of feeding rollers 45 and 46 are spaced apart from the tube T ".

Thereafter, the rotary drive unit 23 is driven to rotate the spring mounting table 20 in the opposite direction by the length (0.5 volume) in which the tube T ″ is inserted, and the tip of the tube T ″ is paired with the feeding roller 45. Positioned between (46). (See the fourth drawing in FIG. 10)

Thereafter, the pair of feeding rollers 45 and 46 are brought into close contact with the side surface of the tube T ″, and the pair of feeding rollers 45 and 46 are rotated in opposite directions to each other, thereby winding the spring 1. Push the tube (T ") in the direction to position the tube from 0.5 to 1 volume from the upper end surface (1a) of the final spring (1). (See Fig. 10 five, sixth drawing)

At this time, the tube detecting sensor provided in the tube feeding unit 40 detects that the fitting assembly of the tube (T ") is completed in the 0.5 to 1 volume area from the upper end surface (1a) of the spring (1), the feeding roller (45) and 46 are stopped, and then the pair of feeding rollers 45 and 46 are separated from the upper end of the spring 1 by the reverse control of the tube feeding portion 40 described above, and the spring holding portion (30) is released and separated from the spring mounting table (20) to produce a spring (1) fitted with a tube (T ") in the 0.5 to 1 volume area from the upper end surface (1a) of the spring as shown in FIG. You are done.

Meanwhile, referring to FIG. 11, the tube T ″ having an initial predetermined length (0.5 volumes) is wound from the upper end surface 1a of the spring 1 through the tube detecting sensor provided in the tube feeding part 40 to 0 volumes. In the state of being inserted into the 0.5 volume, as shown in the embodiment shown in Figure 10, without the need to stop the operation of the pair of feeding rollers (45, 46), it continues to drive the rotary drive and the simultaneous rotation drive unit 23 It is also possible to rotate in the reverse direction by the length (0.5 volumes) in which the tube T "is fitted using the spring mounting stand 20.

In this way, the spring mounting table 20 in the opposite direction to which the simultaneous tube T "is inserted into the feeding rollers 45 and 46 to continuously push the tube T" in the winding direction of the spring 1 using the rotational force. By rotating N) in the reverse direction, there is an advantage that the tube T ″ of a predetermined length (0.5 volume) can be quickly assembled into the 0.5 to 1 region of the spring 1, which is the final position.

At this time, the pressing force to which the rotational force of the feeding rollers 45 and 46 is applied stays at the radial position of the spring 1 into which the tube T "is fitted, and the rotating shaft of the spring mounting table 20 for driving the reverse rotation is a spring ( 1) is located on the central axis of the bar, the rotational drive unit 23 of the spring mounting 20 is provided with a separate reducer to control the eccentric load generated during the reverse rotation drive of the spring mounting 20 Basically it should be considered.

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.

(T), (T "): Tube (1): Spring
(1a): end face (10): frame
(20): spring mounting bracket (21): mounting hole
(22): Positioning stopper (23): Rotating drive part
(30): spring holding part (31): working cylinder
(32): support block (33): drive cylinder
40: tube feeding part 41: vertical transfer unit
(42): horizontal transfer unit (43): tube holding unit
(44): tube feeding unit (45), (46): feeding roller

Claims (7)

Frame 10;
A spring mounting unit 20 installed at the center of the frame and rotatable by the driving of the rotation driving unit 23 and having a mounting hole on the upper surface to support the lower end of the spring;
A spring holding part 30 disposed around the spring mounting stand to fix and support the spring 1 mounted on the spring mounting stand in a vertical state; And
The pair of feeding rollers 45 and 46 provided at the output end is moved from the spring holding part to the upper end of the spring fixedly supported, and is disposed on the side of the tube (T, T ") fastened to the upper end of the spring. Tube feeding part 40 for fitting and fitting the tubes (T, T ") in the winding direction by the rotational force of the feeding rollers (45, 46) in a state in close contact with the pair of feeding rollers (45, 46) Coil spring tube assembly apparatus comprising a.
The method of claim 1,
Coil spring tube assembly device, characterized in that configured to include a positioning stopper (22) for supporting the lower end surface of the spring (1) mounted on the upper surface of the spring mounting.
The method of claim 1,
The spring holding portion 30,
An operating cylinder 31 installed at the center bottom of the spring mounting stand 20 to draw the rod upward;
It is arranged to maintain the same distance around the spring mounting stand, and the plurality of retracted, close or mutually plunged toward each other toward the side of the spring (1) installed in the spring mounting stand by the operation of the cylinder (31) Coil spring tube assembly device, characterized in that consisting of a support block (32).
The method of claim 1,
The tube feeding portion 40,
A vertical transfer unit 41 for moving the vertical movement block 413 up and down along the vertical rail of the vertical transfer base 412 fixed to the frame;
A horizontal transfer unit 42 for horizontally moving the horizontal movement block 423 along the horizontal rail of the horizontal movement base 422 coupled to the vertical movement block 413;
Feeding rollers 45 and 46 are adjacent to each other or spaced apart from the roller fixing blocks 433 and 434 along the left and right rails of the gripping transfer base 432 coupled to the horizontal moving block 423. Tube holding unit (43); And
A tube feeding unit 44 for rotating the feeding rollers 45 and 46 coupled to the roller fixing blocks 433 and 434 in opposite directions; Coil spring tube assembly device, characterized in that configured to include.
The method of claim 4, wherein
The tube feeding unit 40, the coil spring tube assembly device, characterized in that it comprises a position detecting sensor for detecting the position of the upper end of the spring.
The method of claim 4, wherein
Coil spring tube assembly device, characterized in that the tube feeding unit 40 comprises a tube detecting sensor for identifying the tube to be fitted to the upper end of the upper end of the spring as the sensing target.
The method of claim 1,
Coil spring tube assembly device, characterized in that it comprises a height adjustment means for raising and lowering the spring mounting table (20) from the frame (10).

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