JP2541704Y2 - Coil spring positioning device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coil spring positioning device. More particularly, a spring guide member and the cylinder guide member, the automatic assembling of the overcurrent breaker oil dashpot provides a positioning apparatus of a coil spring which can be easily.

[0002]

2. Description of the Related Art As an apparatus for positioning a coil spring,
For example, Japanese Patent Publication No. 5-6028 and Japanese Patent Publication No. 5-15320
Many of the prior art are known, such as No. Both co
Yl spring is inserted seated unstable coil spring coil diameter is larger than the diameter of serviced overcurrent breaker <br/> oil dash pot small armature stepped portion for engaging the an automatic assembly Could not be attached. For this reason, the work of inserting and seating the coil spring in the armature has been manual assembly.

[0003]

As shown in FIG. 9 A devised to solve the above (d), the over-current breaker for oil dashpot armature 5
Is such that the axial length of the small step portion 5a for engaging the coil spring 3 is less than twice the wire diameter (approximately 0.2 to 0.3 mm) of the coil spring 3, and the coil spring 3 has a wire diameter of Since the ratio (D / d) of the coil diameter (D) to (d) is large and the spring constant is low, it is difficult for the coil axis to form a straight line and unstable.

For this reason, when the armature 5 shown in FIG. 9D is press-fitted into the cylinder 1 of the oil dashpot sub-assembly 6 shown in FIG. 10, even if the axes of the cylinder 1 and the armature 5 are aligned. The end 3a of the coil spring 3 is easily decentered because the coil axis is unstable as described above, and the inner periphery of the end 3a of the coil spring 3 is inserted and seated in the small step portion 5a which is the spring seat of the armature 5. Was difficult and hindered automatic assembly.

[0005] The present invention has been made in view of the above-mentioned problems of the prior art, and the purpose thereof is to
It is an object of the present invention to provide a coil spring positioning device that can easily and automatically assemble an oil dash pot by stably inserting an end portion 3a of a coil spring 3 into a small step portion 5a of an armature 5. .

[0006]

In order to achieve the above-mentioned object, a coil spring positioning device for stably inserting and seating a coil spring in an armature according to the present invention comprises a coil spring having a coil spring attached to the armature. A spring guide member formed with a guide portion which engages with one end of the cylinder to automatically align the coil spring and the armature, and engages with one end of a cylinder to automatically align the cylinder with the armature And a cylinder guide member having a guide portion to be formed.

[0007]

The operation of the present invention having the above-described means will be described below with reference to FIGS. Oil dash pot sub-assembly 6 at assembling position 41 shown in FIG.
Is, as are shown in FIG. 6 (b), the despite being positioned armature 5 and coaxial, since the end portion 3a of the coil spring 3 is unstable central axial position as previously described armature 5 is easy to be eccentric.

FIG. 7 (a) shows a step of lowering the gripper 10 to insert and seat the coil spring 3 on the armature 5, and as the gripper 10 lowers, the end 3a of the coil spring 3 Cylinder guide 12a formed at the lower part of
And subsequently engages with a spring guide 13a formed on the spring guides 13, 13, so that the axis of the end 3a of the coil spring 3 coincides with the axis of the armature 5, so that the coil spring 3 Of the armature 5 can be smoothly inserted and seated in the small step portion 5a which is a spring seat of the armature 5.

As shown in FIG. 7 (b), the gripper 10 is subsequently lowered, and the end 1a of the cylinder 1 is
After the cylinders 1 and 2 are engaged with the cylinder guide portions 12a and the axes of the cylinder 1 and the armature 5 are made to coincide with each other (that is, the axes of all the assembly members coincide with each other), as shown in FIG.
1 presses the armature 5 is lowered, and is of press-fitting attached to the sheet cylinder 1.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention is shown in FIG.
The following description will be made with reference to FIGS. 2 to 4 showing the gripping portion, FIG. 5 showing the transfer section, FIGS. 6 to 8 showing the respective steps, and FIGS. 9 to 11 showing the work.

[0011] grip portion 10, as shown in FIG. 1, the rod 32a of the transverse cylinder 32, via the connecting plate 18 to the attached rods plate 32b to 32a end to attach the flat row chuck 11, the horizontal cylinder 32 By the operation of the above-mentioned position, they are positioned at the transfer position 21 and the assembling position 41, respectively, and reciprocate. Horizontal cylinder 32 is attached to the vertical cylinder 31 is attached to the side plate 33 which is mounted on the attachment plate 44, the transfer position 21 and the assembly position by actuation of the vertical cylinder 31 4
1 and move up and down together with the gripper 10.

[0012] The configuration of the gripping portion 10 as shown in FIGS. 2 and 3, a finger 12, 12 is attached to a pair of opposed chuck 17, 17 parallel chuck 11 with a built-in air cylinder, full Inga 12,12 The spring guide 13,
Insert the spring guide 13 slidably in a hole for inserting the 13, place it guides 13 are respectively spring insertion holes 13b, 13b and the projection 13c, the spring 14, 14 has a 13c is pressed, the field I 14, 14 the spring insertion hole 13b, the spring insertion hole 13b at one end is inserted into the 13b, the other end is abutted against the end face of the 13b to suppress the stopper 15 and 15, scan stopper Reference numerals 15 and 15 are attached to the side surfaces of the fingers 12 and 12, respectively. Lid 1
Reference numerals 6 and 16 are attached to the upper ends of the fingers 12 and 12, respectively.

An armature holding portion 1 for holding the armature 5 shown in FIGS.
2b was Katachi設, gripping the armature 5 in armature gripping portion 12b by the operation of the parallel chucking click 1 1. In the gripping state, as shown in FIG.
6, 16 and the lower end position is the spring guide 13,
Regulated by 13. 3 and 4 (c), a cylinder guide 12a for guiding the cylinder 1 is formed below the fingers 12, and is formed by the cylinder guide 12a when the armature 5 is gripped. The cylinder 1 is guided with the minimum inner diameter of the upper end of the truncated cone slightly larger than the outer diameter of the cylinder 1. Spring guide 13, 1
At one end of the armature 3, a spring guide 13a for guiding the coil spring 3 shown in FIGS.
The minimum inner diameter of the upper end portion of the truncated cone formed when the inside of the protrusions 13c, 13c abuts against the side surfaces of the fingers 12, 12 with the gripping portion being slightly larger than the outer diameter of the coil spring 3, Guide 3

[0014] transfer unit 20 as shown in FIG. 1, to attach the slide plate 28, 28 on the attachment plate 44 bored a hole 44a for inserting the knockout 25, opposite to the sliding rotation plate 28 and 28 L
The guide members 27, 27 shaped like a letter are attached facing each other ,
The proposal inner member facing the space formed by the inverted L-shape which is Katachi設with the 27 charged with escape 26 which is Katachi設slidably lower in this space, the upper end face of the escape 26 A work introduction portion 26a having a stepped semi-oval cross section for mounting the armature 5 fed from the shooter 22 shown in FIG. 5 and FIG. the lower drilled a hole the diameter of the pressing shaft 23 is charged vertically movable in the hole, and embedded the magnet holder 24 in a hole bored in the upper end of the push application shaft 23 other the end to Katachi設the large diameter portion, Ma Gunetto holder 24 grip portion 1 a armature 5
0 has a magnetic coercivity which armature 5 when to transfer without departing fall, the knock-out 25 is attached to the cylinder rod 29 end of the air cylinder (not shown) in the lower position of the pressing shaft 23, Roh Kkuauto 25 The upper surface is formed such that the lower surface of the pressing shaft 23 is slidable when the escape 26 slides.

The assembling portion 40 sliding groove is as shown in FIGS. 1 and 6 (b), the mounting sliding plate 43 is attached to the attachment plate 44, the upper end portion on the mounting置摺rotation plate 43 was then挾着the table 42 slidably and Katachi設, formed by drilled holes to charged cylinder 1 oil dash <br/> Interview pot sub ASSY 6 to the upper end of the table 42 Things.

As shown in FIG.
Two units 57 and attached to attach the sliding shaft 56 and衝止member (bottom) 59 on the upper surface of the platform 57, rotating the turning prevention member (not shown) drilled a hole in one in sliding shaft 56 a pressing plate 53 which is suppressed movement vertically movably charged,衝止member to position the lower surface of the push plate 53 facing the衝止member (bottom) 59 (above) 58
At the position facing the oil dash pot sub-assembly 6 at the mounting position 41, the punch 51 is
Was attached, it was mounted on the upper surface of the push plate 53 facing the holding member 54, 54 has Katachi設reversed L-shape, hold members 54,5
4 oppositely charged with pushing element 52b that Katachi設swingably lower in this space is the space formed by the inverted L-shape which is Katachi設, the rod 52 of the press cylinder 52 is in pressing indenter 52b
and attaching a a, the other end of the pressure inlet cylinder 52 locks hanging by a hinge member (not shown) illustrated that torquecontrol Nji member is attached to the holding member (not shown) is attached to the attachment plate 44 .

Next, the operation of the present invention having the above configuration will be described as follows. Among the workpieces shown in FIG. 9, the oil dashpot sub-assembly 6 shown in FIG. 10 composed of the cylinder 1, plunger 2, coil spring 3 and brake oil 4 (FIG. 10) is mounted on the mounting table 42 by assembling means (not shown). The mounting base 42 is slid by the operation of an air cylinder (not shown) so that the axis of the oil dash pot sub-assembly 6 is coaxial with the punch 51 shown in FIG. Is positioned at the mounting position.

[0018] One of the armature 5, aligned conveying small stepped portion 5a of the armature 5 in FIG. 5 and the guide groove that Katachi設to the shooter 22 as shown in FIGS. 6 (a) by a conveying means (not shown) in the bottom I do. The knockout 25 of the transfer section 20 is positioned at the lowermost end, and the pressing shaft 23 is pressed downward by a spring member (not shown), and the lower surface thereof contacts the knockout 20, and the upper surface of the magnet holder 24 embedded in the pressing shaft 23. It does not protrude from the lowest surface of the work introducing portion 26a which is Katachi設escape 26, and smoothly traverse the armature 5 side over click introducing section 26a may have a magnetic force Ma Gunetto holder 24 (See FIG. 1), the introduction portion 26a formed in the escape 26 and the guide groove formed in the shooter 22 are coaxial. When the escape 26 is positioned such that, armature 5 is Yuta 22 or Lae scape 2
6 is placed on the introduction part 26a formed in FIG.

[0019] After the armature 5 is placed at a predetermined position of the inlet portion 26a which is Katachi設escape 26, is slid escape 26 by an air cylinder (not shown), an armature 5
Is positioned at the delivery position 21 that can be gripped by the gripper 10 (FIG. 5).

After the escape 26 is positioned at the delivery position 21 as described above, as shown in FIG. 6A, the pressing shaft 23 is pressed by the knockout 25 to a predetermined position where the armature 5 can be gripped by the gripping portion 10. And the parallel chuck 11 of the gripper 10 is operated to move the fingers 12,
12 is opened by a predetermined amount, and the gripper 10
Is lowered to a predetermined position where the armature 5 can be gripped by the fingers 12, 12 and positioned, and the fingers 12, 12 are closed to grip the armature 5. The vertical cylinder 3 is positioned at a predetermined position between the lower end of the punch 51 and the upper end of the oil dashpot sub-assembly 6 where the gripper 10 is waiting at the assembly position 41.
1 to raise and position (FIG. 1).

As described above, the gripper 10 is moved to the delivery position 2
1 to a predetermined position, and after positioning , the horizontal cylinder 32
6B, the grip 10 is transferred to the predetermined position of the assembling position 41 and positioned. In this state, since the coil axis of the coil spring 3 is unstable, the axis of the end 3a is at an unspecified position.

As described above, the gripper 10 is moved to the mounting position 4
After positioning to a predetermined position and to lower the gripper 10 gripping the armature 5 vertical cylinder 31 is operated, as shown in FIG. 7 (a), the coil spring of the oil dash pot sub ASSY 6 The upper end 3a of the finger 3 is a finger 12,
12 is engaged and guided by a cylinder guide portion 12a formed in
Continuing to lower the grip portion 10 by the vertical cylinder 31, co-yl end 3a of the spring 3 the spring guides 13
The end portion 3a and the armature 5 of the coils spring 3 becomes coaxially by its minimum inner diameter portion is engaged guided by the spring guiding portion 13a which is Katachi設in, against the coils spring 3 in the end 3a pole 5 is inserted. When the further subsequently lowering the grip portion 10, the end portion 1a of the cylinder 1 is the minimum inner diameter portion of the outer periphery of the engaging guided the cylinder 1 to the cylinder guide portion 12a which is Katachi設the fingers 12, 12 is cylinder guide portion 12a As a result, as shown in FIG. 7B, the cylinder 1 and the armature 5 become coaxial, and when the gripper 10 is continuously lowered, the cylinder 1 and the armature 5 also engage with the spring guides 13a formed on the spring guides 13, 13. , Ba I guide section 13a and the middle portion 5b of the end portion 1a and the armature 5 of inserting the cylinder 1 width ne guide portion 13a is widened in the centrifugal direction by the ends 1a of the cylinder 1 cylinder 1 abuts The gripper 10 is positioned at the lowermost position shown in FIG.

After the gripping portion 10 is positioned at the lowermost position as described above, as shown in FIG. 8A, the punch 51 is lowered by the operation of the press-in cylinder 52, and the armature 5 Press the upper end surface of the, as shown in FIG.
The armature 5 is press-fitted into the cylinder 1 so as to be in the form of an oil dash pot assembly 7 and the punch 51 is raised and
The complete assembly according to the present invention discharged from the oil Da <br/> Tsu Gerhard pot ASSY 7 mounting table 42 by means (not shown) back to the temporary assembly position. The stop member (upper) 58 and the stop member (lower) 59 shown in FIG. 1 are intended to prevent runaway when the positioning of the punch 51 at the position where the armature 5 is completely pressed is inoperative. The runaway may be prevented by other means.

Then, the respective components of this embodiment are positioned at the assembly preparation position to prepare for the next assembly.

[0025]

[Effects of the Invention] Since the present invention is configured as described above, the following effects can be obtained. Fingers 12 and 12 and spring guides 13 are attached to a gripper 10 for gripping the armature 5.
And 13 is provided, the cylinder guide unit 1 is in the lower position of full Inga 12, 12 for guiding the cylinder 1 to the armature 5 and coaxial
2a was Katachi設, The spring guide portion 13a for guiding the coil spring 3 to the armature 5 and coaxial to play it guides 13
The coil spring 3 whose coil axis is unstable due to the large D / d is easily and stably inserted and seated in the small step portion 5a of the armature 5, so that not only the labor saving by the automatic assembly but also the It is possible to improve production efficiency and reduce costs by increasing the speed.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an entire configuration of an embodiment according to the present invention.

FIG. 2 is a plan view of the grip portion shown in FIG.

FIG. 3 is a cross-sectional view of the gripper shown in FIG. 2 taken along line BB.

4A is a sectional view taken along the line CC of FIG. 3, FIG. 4B is a sectional view taken along the line DD of FIG. 3, and FIG. 4C is a sectional view taken along the line EE of FIG.

FIG. 5 is a plan view of the delivery section shown in FIG.

FIG. 6A is a cross-sectional view illustrating a state where an armature is gripped at a delivery position. FIG. 4B is a cross-sectional view illustrating a state in which the grip portion is positioned at an assembly position.

FIG. 7A is a cross-sectional view showing a state where a coil spring is guided and positioned at an assembly position. (B) is a sectional view showing a state where the cylinder is guided and positioned at the assembly position.

FIG. 8A is a cross-sectional view showing a state in which the cylinder is guided and positioned at the assembling position and is in contact with the armature. (B) is a cross-sectional view showing a state where the armature has been completely pressed into the cylinder at the assembly position.

9A and 9B show components of a work, wherein FIG. 9A is a cross-sectional view of a cylinder, FIG. 9B is an external view of a plunger, FIG. 9C is an external view of a coil spring, and FIG. 9D is an external view of an armature. .

FIG. 10 is a cross-sectional view illustrating a configuration of an oil dash pot sub-assembly of a work.

11 is a cross-sectional view of the oil dash <br/> shoe pot ASSY showing the configuration after the work assembly completed.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Cylinder 3 Coil spring 5 Armature 6 Oil dashpot subassembly 7 Oil dashpot assembly 10 Gripping part 12 Finger 13 Spring guide 20 Delivery part 40 Assembly part 50 Press-fit part 51 Punch

Claims (1)

(57) [Scope of request for utility model registration] 1. A means for transferring an oil dashpot sub-assembly comprising a cylinder, a plunger, a coil spring and a brake oil, which has been temporarily assembled in advance, to an assembly position, a means for aligning and conveying an armature, and Means for transferring to the delivery position, means for gripping the armature, means for transferring the armature gripped by the gripping means to the mounting position, and press-fitting by pressing the armature at the mounting position over and means
Of current interrupter oil dashpot assembly machine,
A means for gripping the armature, a spring guide member formed with a guide for engaging one end of the coil spring and automatically aligning the coil spring with the armature, and engaging with one end of the cylinder; And a cylinder guide member having a guide portion for automatically aligning the cylinder and the armature with each other.