JP3385202B2 - Retaining ring mounting device - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a shaft.
The present invention relates to a retaining ring mounting device suitable for automatically mounting a retaining ring for fixing a gear or the like.

[0002]

2. Description of the Related Art A method shown in FIGS. 7 and 8 is adopted when an E-type snap ring or a crescent snap ring is mounted in a groove of a shaft. Among them, according to the method of FIG. 7, when a large number of retaining rings 1 are randomly fitted to the rod 50 as shown in FIG. 7C and then the rods 50 are oscillated sideways, the respective retaining rings 1 are lightened so that the openings thereof are opened. The part 1a is positioned upward and aligned. From that state,
The rod 50 is fixed on the base 51 upside down, and the retaining ring holder 60 is used to sandwich the uppermost retaining ring 1 as shown in FIG. The retaining ring holder 60 includes a pair of holding pieces 61.
And has a spring body structure in which both clamping pieces 61 open in the radial direction with respect to each other.
As in (b), the structure is such that it fits in the groove 7a of the shaft 7 in which the gear 8 is mounted.

Another method uses a device as shown in FIG. This device includes a step 71 and a projection end surface 72.
A plate-shaped base member 70 having an upper end side, an elevating member 75 with a stopper plate 74 that is fitted to the base member 70 and is urged upward by a spring 73, and arranged on the step portion 71 side in the drawing. In the figure, which is omitted, there is a fulcrum on the right side of the drawing, and it comprises an alignment rod 76 which is urged upward and swings, and a pusher 78 which is arranged above the base member 70 and has a groove 77 which opens downward. Alignment bar 7
6, the retaining ring 1 is aligned and is biased to the left in the drawing by a spring or the like. Then, as shown in (b), the lifting member 7
When 5 is on the upper side, the retaining ring 1 at the end abuts on the side surface of the retaining plate 74, and one retaining ring 1 is placed on the end surface 72 of the protrusion of the base member 70. From this state, the groove 7a of the shaft 7 is aligned with the upper opening 1a of the retaining ring 1 and the pusher 78 is lowered to engage the groove 7a of the shaft 7 with the inner diameter of the retaining ring 1 as shown in FIG. To be done.

[0004]

[Problems to be Solved by the Invention] The former retaining ring holder 6
The method using 0 has an advantage that the retaining ring 1 can be mounted in a state in which it is in close contact with the end surface of the gear 8 as shown in FIG. 7B, but the work efficiency is inferior manually. In that respect, the snap ring holder 60 is set on the robot hand, and the snap ring 1 is attached to the rod 5
It is conceivable that the operation of taking out from 0 and the mounting on the shaft 7 can be numerically controlled, but there is a drawback that the equipment cost becomes large. The latter device can be semi-automated with a simple structure, but is restricted by the groove 7a of the applicable shaft 7 due to the stop plate portion 74 which plays a role of receiving the end surface of the stop ring 1. It cannot be applied to an object in which parts such as the gear 8 are already mounted on the shaft 7 as in (b).

The object of the present invention is not limited to the object to be applied, like the retaining ring holder, can be automated with a minimum equipment cost, and is not limited to one retaining ring for the shaft, but two retaining rings. However, it is to realize a device that can be mounted at the same time. Other purposes will be clarified one after another in the content described below.

[0006]

In order to achieve the above object, the present invention provides an opening 1a as illustrated in FIGS.
In the retaining ring mounting device for mounting the retaining ring 1 with a groove from the opening 1a in the groove 7a of the shaft 7, an introduction hole 15 having a diameter larger than the outer diameter of the retaining ring 1, a guide groove 16 crossing the hole tip of the introduction hole 15, The retaining ring mounting position 16a set on the front end side of the guide groove 16, the opening 17 that opens the upper part of the retaining ring mounting position 16a, and the upper part from the lower position inside the opening 17 to open and close the shaft 7 together with the opening 17. Base block 10 that forms a space 18 for allowing
A plurality of retaining rings 1 via the guide columns 21 assembled to the
Is provided slidably in the guide groove 16 and the supplying means 20 capable of continuously supplying the retaining ring 1 and the retaining ring 1 at the tip supplied to the introduction hole 15 is attached to the retaining ring mounting position 16a along the guiding groove 16.
And a holding means 40 that is arranged in a state of being urged upward with respect to the space 18 and that supports the shaft 7 and descends to the snap ring mounting position 16a. When 7 is pressed and lowered together with the holding means 40, the retaining ring 1 that has been moved to the retaining ring mounting position 16 a engages with the groove 7 a of the shaft 7.

According to the device of the present invention, first, the plurality of retaining rings 1 are sequentially supplied to the hole tip of the introduction hole 15 through the supplying means 20. Retaining ring 1 at the tip supplied to the introduction hole 15
Is located in the guide groove 16 and is moved to the snap ring mounting position 16a of the guide groove 16 by driving the pusher means 30 forward. The shaft 7 is positioned and supported by the holding means 40 in the space 8. When the shaft 7 is mechanically or manually pressed from the upper side, the shaft 7 is lowered together with the holding means 40 through the space 8 and the opening 17, and the retaining ring. The retaining ring 1 that has been moved to the mounting position 16a is the groove 1 of the shaft 1.
Attach to a.

The features of the above apparatus are as follows. The base block 10 is the main component, and the drive means, the pusher means 30, and the respective drive mechanisms as the holding means 40 can be realized with a simple structure. That is, as the supply means 20, the tip of the guide column 21 is provided at the introduction hole 15
It suffices that the plurality of retaining rings 1 are pressed against the introduction hole 15 side by the biasing member 23 or the like so as to be aligned with each other. The pusher means 30 may be any one that can be driven back and forth along the guide groove 16. As the holding means 40, the shaft 1
Can be received and supported from the lower side, and it suffices to urge it upward by the urging means 44 such as a spring. The respective mechanical parts can be installed in the optimum state. That is, the introduction hole 15 and the guide groove 16 are substantially T-shaped, and the supply means 20 and the pusher means 30 are arranged on different sides. For this reason, a space for installing the mechanism portion is arbitrarily secured, and for example, it is possible to lengthen the guide column 21 of the supply means 20 and set several hundred retaining rings 1 at one time to continuously supply. , Easy to improve work efficiency. The snap ring mounting position 16a is located on one end side of the substantially T-shaped horizontal piece (pusher means 3).
Since it is located in the forward direction 0), various automatic transfer machines for moving the shaft 7 can be easily arranged. Further, the opening 17 that opens the upper part of the retaining ring mounting position 16a and the opening 1
It is also applicable to the case where the shaft 7 has the gear 8 and the like by the space 18 opened from the position below 7 and the holding means 40 that can be moved up and down, and the retaining ring 1 is mounted in close contact with the end face of the gear 8 and the like. become. , The retaining ring 1 is attached to the retaining ring 1 along the guide groove 16
6a, and is mounted in the groove 7a of the shaft 7 at that position. For this reason, the tact is shortened by retracting the pusher means 30 and moving the next retaining ring 1 within the retaining ring mounting time at the retaining ring mounting position 16a or the time for replacing the shaft 7, thereby improving efficiency. Good mounting work is achieved.

More preferably, the retaining ring mounting device described above is embodied as follows. That is, the base block 10 has a substrate 12 in which the introduction hole 15 and the guide groove 16 are formed, and a core member 13 arranged in parallel with a part of the substrate 12, and is supplied to the introduction hole 15. Retaining ring 1 at the tip
Is a structure which is regulated by the side surface of the core member 13 and is arranged in the guide groove 16. Further, the base block 10 has the substrate 12 and the supply means 20 on both sides sandwiching the core member 13 and the holding means 40. Each has its own structure. By doing so, as the device structure, the guide groove 16 and the introduction hole 15 can be easily formed, and the two retaining rings 1 can be formed.
It is possible to easily construct a dual-type system in which the two are simultaneously mounted.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the device of the present invention will be described below with reference to the accompanying drawings. The form example described below is
Since the present invention is a preferred embodiment of the present invention, various technically preferable limitations are attached thereto, but the present invention is not limited thereto.

1 to 5 show the morphological structure of a retaining ring mounting device according to the present invention. FIG. 1 is a transverse sectional view of the device, and FIG. 2 is a longitudinal sectional view of the device, of which (a) is the same. On line A-A,
1 ((b) is a vertical sectional view taken along line BB in FIG. 1 and FIG. 3 (c) is a vertical sectional view taken along line C-C. FIG. 3 is a reference perspective view showing a main part of the apparatus, and FIG. Fig. 5 is a partial cross-sectional view showing two examples of shafts to which is applied Fig. 5 shows an operation of the apparatus in a longitudinal cross-section of a main part.

The retaining ring 1 applied to the device of the present invention has an opening 1a to prevent the gear 8 or the like, which is a component arranged around the axis of the shaft 7, from coming off or moving. is there. As shown in FIG. 4 (a), the shaft 7 has a structure in which the retaining ring 1 is mounted in the grooves 7a on both sides corresponding to the gear 8 etc., and the retaining portion 7b is provided around the shaft as shown in FIG. Any of the configurations in which the retaining ring 1 is mounted in the groove 7a may be used. Further, it is naturally possible when the shaft 7 does not have parts such as the gear 8.

1 to 3, in this snap ring mounting device, a base block 10 is mainly used, and a supply means 20 for supplying the snap ring 1 to the inside of the base block 10 and a mounting position for the snap ring 1 supplied. Means 3 to move to
0 and holding means 40 for supporting the shaft 7 set in the mounting position so as to be able to move up and down, and two retaining rings 1 can be mounted on the shaft 7 at the same time.
The base block 10 is provided on the bottom plate 11 and has two substrates 12 that are spaced apart from each other so as to form opposite side surfaces, and a space between the two substrates 12 is filled from the middle to the rear side. A schematic outline is formed from the installed core member 13 and an end plate 14 that closes the front sides of both substrates 12 and forms a space 18 between the front end surface of the core member 13. Each substrate 12 is provided with an introduction hole 15 that communicates with the corresponding side surface of the core member 13 and that is larger than the outer diameter of the retaining ring 1. The inside of each substrate 12 corresponds to the tip of the introduction hole 15,
A guide groove 16 is provided so as to cross the introduction hole 15. The guide groove 16 has a width and a depth with which one retaining ring 1 is slidably moved, and communicates with a rear end of the substrate 12 (upper side in FIG. 1). The front end of the guide groove 16 extends to the near side of the end plate 14, and the end groove side is a dead end. This dead end portion becomes the restriction end of the snap ring mounting position 16a.

Further, each substrate 12 has a snap ring mounting position 1
An opening 17 is provided by notching and opening the upper portion of 6a. The opening 17 has a width slightly larger than the outer diameter of the shaft 7 and has such a width that the retaining ring 1 moved to the retaining ring mounting position 16a does not come out. The snap ring 1 is attached to the snap ring mounting position 16 as shown in FIGS.
When moved to a, both side portions of the retaining ring 1 hit the inner surface of the corresponding guide groove 16 and the step 17a provided at the corresponding vertical edge of the opening 17 and are prevented from coming out. At the same time, the space 18 is located inside the opening 17, and the retaining ring 1 is prevented from falling into the space 18 by the corresponding side surface of the holding means 40 arranged in the opening 18. The core member 13 may be omitted from the above base block 10. In this case, for example, an integral block body is used, and the introduction hole 15, the guide groove 16, the opening 17, and the space 18 are formed in the block body, respectively.

The supply means 20 has a guide strut 21 having a thickness inserted into the inner diameter of the retaining ring 1, and a biasing member 23 arranged so as to be freely movable to the guide strut 21 through a through hole 23a. And a spring 24 such as a coil spring that applies a biasing pressure to the biasing member 23. The guide column 21 has a piece-shaped fixing member 22 protruding from the tip.
By coupling 2 into the introduction hole 15, the introduction hole 15 and the introduction hole 15 are mounted on a substantially coaxial line. The plate width of the fixing member 22 is smaller than that of the opening 1a of the retaining ring 1, and
The fixing member 22 prevents the stop ring 1 inserted into the stopper 1 from moving. The biasing member 23 is constantly subjected to the biasing pressure of the spring 24 so as to be moved to the substrate 12 side. Therefore, in this supply means 20, when the biasing member 23 is set to the projecting end of the guide strut 21 through the through hole 23a from the state where the plurality of snap rings 1 are inserted into the guide strut 21, each snap ring 1 is According to the pressure of the spring 24, the second retaining ring 1 can be arranged at the distal end when the retaining ring 1 at the front end is moved by being pushed toward the introduction hole 15 side and moved.

The pusher means 30 comprises a plate member 31 having a U-shaped cross section, and a rod 32 protruding from a U-shaped intermediate piece.
The drive mechanism is connected to the whole to move back and forth. The plate member 31 is movably incorporated into the guide groove 16 from the open side (rear side) of the guide groove 16 with the U-shaped pieces 31a fitted therein. The moving range of the plate member 31 is a range in which the tip ends of both pieces 31a are located at the respective positions shown in FIGS. 5 (a) and 5 (b), and the drive mechanism is controlled so as to alternately switch these two positions. Note that FIG. 5A shows the case where the plate member 1 moves forward to move the retaining ring 1 to the retaining ring mounting position 16a, and FIG.
Is when the plate member 1 is retracted until just before the introduction hole 15 is completely opened.

The holding means 40 has an elevating member 41 and a biasing means 44 such as a spring, and the inner surfaces of both substrates 12 and the core member 1 are provided.
It is arranged in a box-shaped space 18 partitioned by the front end of 3 and the end plate 14. The elevating member 41 has an upper portion formed on an arcuate holding surface 42 corresponding to the gear 8 and the like (parts other than the gear and the work) on the shaft 1 side. A plurality of bottomed holes 43 are provided on the lower side so that part of the biasing means 44 arranged between the bottom plate 11 and the bottom plate 11 can be received. In the normal state, the elevating member 41 is urged upward by the urging means 44, and stopper portions 13a, 14a provided on the inner upper side of the core member 13 and the end plate 14 as shown in FIG. 2C.
It is moving up until regulated by. When the downward pressing force is applied, the work supporting surface 4 is resisted against the biasing force of the biasing means 44.
2 is moved to a position below the retaining ring mounting position 16a of the guide groove 16. It should be noted that such an elevating member 41 can be easily replaced when the gear 8 or the like (parts other than the gear or a work) has a different shape in an assembly line of various kinds, or the end plate 14 or the like. Protrusions are provided on the corresponding side face, and appropriate adjustments are made so that the guide can be moved up and down with precision through the fitting of the protrusions.

Next, regarding the operation and operation procedure of the above snap ring mounting apparatus, the snap ring 1 is simultaneously installed in the configuration shown in FIG. 4A, that is, in the two grooves 7a in which the shaft 7 is close to both end surfaces of the gear 8. An example of mounting will be described. In this device, a large number of retaining rings 1 are set on the supply means 10 as an initial operation. In this work, for example, the retaining rings 1 are inserted in parallel to a rod having an appropriate thickness, and the retaining rings 1 are aligned so that the openings 1a of the retaining rings 1 face upward. The urging member 23 to the guide column 2
1, the aligned retaining ring 1 is inserted into the guide column 21 and moved, and the biasing member 23 is attached to the protruding end of the guide column 21 again. The retaining ring 1 may be directly inserted into the guide column 21 because the opening 1a is aligned with its own weight due to its own weight.

When the pusher means 30 is driven to retract the plate member 31 from the position shown in FIG. 5 (a) to the position shown in FIG. 5 (b), a large number of retaining rings 1 inserted through the guide columns 21 are inserted. Of these, the retaining ring 1 at the tip is moved from the rear side by the urging member 23, so that the retaining ring 1 is moved until it comes into contact with the facing surface of the core member 13, and is moved into the guide groove 16. Then, the plate member 31 is advanced. Then, the snap ring 1 at the tip
Is moved forward along the guide groove 16 and reaches the snap ring mounting position 16a (the snap ring 1 has a step 17 of the opening 17).
(just before hitting a)). The retaining ring 1 is shown in Fig. 5 (a).
As described above, at the retaining ring mounting position 16a, the opening 1a is directed upward, and both side portions have a step 1 with the corresponding inner surface of the guide groove 16.
It is seated in a state of being supported by 7a and is prevented from inadvertently falling by the corresponding side surface of the elevating member 41 which is biased upward in the space 18.

The second retaining ring 1 of the guide column 21 is in contact with the facing surface of the plate member 31, and the plate member 31 is moved to the original retracted position by the pusher means 30 as shown in FIG. 5B. Then, similarly to the first retaining ring 1, it is moved until it comes into contact with the facing surface of the core member 13, and is moved into the guide groove 16. The shaft 7 is on standby just above the elevating member 41 by a transfer mechanism or the like (not shown). Then, after the snap ring 1 is moved to the snap ring mounting position 16a, the shaft 7
Is lowered and the gear 8 is placed on the work supporting surface 42. When the gear 8 is pushed downward by the pushing means 45, the elevating member 41 is lowered against the biasing means 44 while holding the shaft 7. In this descending process, the groove 7 of the shaft 7
When the tip of the opening 1a of the retaining ring 1 contacts a and is further lowered, the distal end of the retaining ring 1 on the side of the pusher means 30 expands elastically so that the retaining ring 1 clings to the groove 7a as shown in FIG. 5 (b). Be attached to.

After that, when the pushing means 45 is raised, the raising / lowering member 41 on which the shaft 7 is placed also rises due to the urging pressure of the urging means 44, and the raising / lowering member 40 is stopped by the stopper portion 13.
It comes into contact with a and 14a and stops. Shaft 7 is snap ring 1
It is taken out by a transfer mechanism or the like in the attached state. The pushing means 45 described above may be a method of pushing the shaft 7 itself instead of the gear 8. If the target article is for a small pump or an office machine, the pushing load is about several hundred g to several kg.
5 may be human power, or may be the hand of an operator. Further, such a snap ring mounting device can be efficiently automated by controlling a series of operations for the drive mechanism of the pusher means 30, the transfer mechanism for bringing in and taking out the shaft 7, and the drive mechanism of the pushing means 45. Will be realized.

FIG. 6 shows a modified example of the above device, and is shown in a section similar to that of FIG. In this snap ring mounting device,
The structure different from the above-mentioned device is the supplying means 20 on the left side of FIG.
Except that the pusher means 30 is a single plate member 3
It is a point consisting of 1. As shown in FIG. 4B, this is used when the shaft 7 has a stop portion 7b for the gear 8 and only one groove 7a is provided.

In the above-mentioned embodiment, the supply means 20 for storing the retaining rings 1 side by side is composed of the guide column 21 and the urging member 23 having the spring 24. Retaining ring 1 will be refilled in several hundreds per batch. When operating unmanned for a long time, for example, the snap ring 1 is supplied to the end portion of the guide column 21 by using a vibrating parts feeder or the like, and the biasing member 2 is used.
This can be achieved relatively easily by adopting an urging structure in which 3 is an intermittent pressurizing means such as an air cylinder. Further, the elevating member 41 constituting the holding means 40 has been described as an integral shape including the work supporting surface 42. However, for example, if the elevating member 41 is divided into upper and lower parts and the upper member is replaced. Thus, it becomes possible to easily deal with parts such as the shaft 7 and the gear 8 having different dimensions and the work.

[0025]

As described above, according to the retaining ring mounting apparatus of the present invention, it is possible to mount the retaining ring in close contact with the end face of the gear or the like provided on the shaft. Since it is a structure that can be mounted on both end surfaces of the same at the same time, and since these can be manually or easily automated, an effect that a simple and efficient assembling work can be performed is obtained. .

[Brief description of drawings]

FIG. 1 is a horizontal cross-sectional view showing a horizontal cross-section of a form apparatus of the present invention at a height position of an introduction hole.

FIG. 2 is a vertical cross-sectional view taken along line AA, line BB and line CC of FIG.

FIG. 3 is a perspective view schematically showing a main configuration of the form apparatus.

FIG. 4 is a cross-sectional view showing two examples of shafts applied to the present invention.

FIG. 5 is a cross-sectional view of essential parts showing a state where the retaining ring of the embodiment apparatus is moved and a retaining ring is completely attached.

6 is a cross-sectional view showing another usage pattern of the present invention in a state similar to FIG.

FIG. 7 is an external view illustrating a first conventional technique when a retaining ring is attached.

FIG. 8 is a vertical cross-sectional view illustrating a second conventional technique when a retaining ring is attached.

[Explanation of symbols]

1 retaining ring 7 shaft 7a groove 8 gears (parts and workpieces) 10 base blocks 12 substrates 13 Core member 15 Introduction hole 16 Guide groove 16a Retaining ring mounting position 20 Supply means for retaining ring 21 Guide post 23 Biasing member 30 pusher means 31 Plate member 40 holding means 41 Lifting member 42 Work support surface 43 biasing means

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Claims (3)

(57) [Claims] 1. A retaining ring mounting device for mounting a retaining ring with an opening in a groove of a shaft from the opening, wherein an introduction hole having a diameter larger than an outer diameter of the retaining ring and a guide recess crossing a tip of the introduction hole. A groove, a snap ring mounting position set on the front end side of the guide groove, an opening with an upper part of the snap ring mounting position open, and an upper part opened from a lower position inside the opening to take in and out the shaft together with the opening. A base block that forms a space that allows a plurality of retaining rings, a supply unit that can continuously supply a plurality of retaining rings via a guide column assembled in the introduction hole, and a slide unit that is slidably arranged in the guide groove. And a pusher means capable of moving the retaining ring at the tip supplied to the introduction hole along the guide groove to the retaining ring mounting position, and arranged in a state of being urged upward with respect to the space,
Holding means that supports the shaft and is capable of moving up and down to the retaining ring mounting position, and when the shaft is pressed and lowered together with the retaining means, the retaining ring at the retaining ring mounting position moves to the shaft. A snap ring mounting device characterized by engaging with a groove. 2. The base block has a substrate on which the introduction hole and the guide groove are formed, and a core member arranged side by side on a part of the substrate, and is supplied to the introduction hole. The retaining ring mounting device according to claim 1, wherein a retaining ring at the leading end is restricted by a side surface of the core member and is disposed in the guide groove. 3. The snap ring mounting device according to claim 2, wherein the base block has the substrate and the supply means on both sides sandwiching the core member and the holding means, respectively.