JPH0891533A - Drive part cover of torsional vibration parts feeder - Google Patents

Abstract

PURPOSE: To provide the drive part cover of torsional vibration parts feeder of which attaching and detaching are easy, and the working man-hours at overhauling can be reduced. CONSTITUTION: In a cylindrical cover 27 of a torsional vibration parts feeder 1 which is formed by confronting the respective straight end edges of curved plates 27a, 27b of 1/2-circular-arc shape with each other, one side confronted parts are joined together by means of upper and lower two retractable hinges 51, and the other side confronted parts are fastened together by means of a power fastener 61 while being positioned by inserting guides 53a, 53b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drive section cover for a torsional vibration parts feeder, and more particularly to a simple cover that can be attached and detached to cover the drive section.

[0002]

2. Description of the Related Art A torsional vibration parts feeder is a device for transferring articles or parts by torsional vibration. Especially, the one that uses electromagnetic force to drive it is to adjust the amplitude and frequency of vibration. It can be used for various purposes because it allows fine control of the transfer state. FIG. 7 is a partially cutaway side view of a torsional vibration parts feeder 2 to which a drive unit cover 27 'of a first conventional example using an electromagnetic force as a drive source is attached, and is generally a bowl-shaped bowl 1 for accommodating and transferring articles.
1 ', and a drive unit 21' that applies a torsional vibration to the drive unit 21 '.

Articles are accommodated on the bottom surface 12 'of the bowl 11', and a track 13 'is provided on the inner surface of the peripheral wall of the bowl 11' so as to rise spirally and serve as an article transfer path. In the drive unit 21 ', the movable plate 22' which is integrally connected to the bottom plate of the bowl 11 'and also serves as a movable core is mounted on the bottom plate 28' by the inclined leaf springs 23 'arranged at equal angular intervals. Is connected to a fixed block 24 'having a low cylindrical shape. An electromagnet 26 'around which an electromagnetic coil 25' is wound is fixed on the fixed block 24 'so as to face the movable block 22' immediately above with a slight gap. A cover 27 'is attached so as to cover the periphery of the drive unit 21', and the entire torsional vibration part feeder 2 is installed on the floor via a vibration-proof rubber 29 '. The cover 27 'includes a movable block 22' and an electromagnet 26 '.
Foreign matter invades a small gap between the drive unit 2 and
It is provided in order to prevent a trouble from occurring in 1 ', and also suppresses noise from the drive unit 21' from being transmitted to the outside. In addition, the drive portion 21 'must be removed as a matter of course at the time of maintenance.

Referring also to FIG. 8 which is a view taken along the line [8]-[8] in FIG. 7, the cover 27 'has curved plates 27a' and 27b 'each having a 1/2 circular arc shape. The end portions of the are overlapped with each other and joined at two places with a total of six screws 31 to form a cylindrical shape.
In a state where the lower end portion of 7'is inserted in contact with the outer peripheral side surface of the low columnar fixed block 24 'and is supported on the bottom plate 28', the ten outer peripheral side surfaces of the fixed block 24 'are arranged at equal angular intervals. It is fixed with screws 32. Note that FIG.
FIG. 9 is an enlarged plan view of a joint portion with screws 31 in FIG. 8.

As described above, the cylindrical cover 27 'is attached by joining the curved plates 27a' and 27b 'with the six screws 31 and fixing it to the fixed block 24' with the ten screws 32. Machining at the joint of the plates 27a 'and 27b', machining of each screw hole, and screws 31 and 32
Therefore, a lot of work man-hours are required for attaching and removing the cover 27 '.

Curved plate 27 with screws 31 shown in FIG.
As an alternative to the joining of a'and 27b ', as shown in FIG. 10, a method of inserting a grooved rod-shaped rubber 33 having an H-shaped cross section from above at the joint between the curved plates 27a' and 27b 'and joining them There is also a fixed block 2 in this method
The complicated work of fixing to the outer peripheral side surface of 4'with the screw 32 cannot be avoided, and the grooved rod-shaped rubber 33 must be thick in terms of strength and durability.
Fixed block 2 to insert 7'from top to bottom
4'is an obstacle, so part of it is scraped off and bent plate 27
It is necessary to provide a gap 34 between a'and 27b '. Since the screw 31 in FIG. 9 is provided at a position where it does not interfere with the fixed block 24 ′ as shown in FIG. 7, it is not necessary to scrape off the fixed block 24 ′.

Further, the worm gear mechanism is modified as another method of joining the curved plates 27a "and 27b" of the cylindrical cover 27 "as in the torsional vibration part feeder 3 of the second conventional example shown in FIG. There is a method using a fastener 41 called a band set or a hose clip.
Since the torsional vibration parts feeder 3 is configured in the same manner as the torsional vibration parts feeder 2 shown in FIG. 7, the same components are denoted by the same reference numerals with ("), and the description thereof will be omitted. Only the method of attaching the cylindrical cover 27 ″ will be described.

FIG. 12 shows a curved plate 27 using a band set 41.
FIG. 2 is an enlarged plan view of a joint portion between a ″ and 27b ″, and FIG.
3 is a view taken along the line [13]-[13] in FIG. With reference to FIG. 12 and FIG. 13, a flat plate gear 4 in which a worm wheel in the worm gear mechanism is expanded to a flat plate
One end of the curved plate 27a ″ is fixed to the end of the curved plate 27a ″, and the worm gear 43 is supported by the support frame 44 thereof.
The flat plate gear 42 is inserted through the long hole 45 provided in the support frame 44 and meshes with the worm gear 43. The handle 46 pivotally mounted on the worm gear 43 holds the war gear 43 in place. In FIG. 13, the curved plates 27a "and 27a are rotated by rotating them clockwise.
b "is tightened, and the handle 46 is erected in the direction perpendicular to the axis of the worm gear 43, as shown in FIG. 13, and also serves as a loosening prevention. Further, in FIG. Curved plates 27a "and 27b"
Engagement is loosened.

The first conventional example shown in FIG. 9 using the screw 31 and the double grooved rubber rod 33 shown in FIG. 10 cannot be tightened, whereas the second conventional example uses the band set 41. The degree of tightening can be adjusted by the degree of rotation of the worm gear 43. Therefore, the curved plates 27a "and 27b" are fixed to the fixed block 2
4 "can be tightened on the outer peripheral side surface, and unlike the case of using the screw 31 or the rod-shaped rubber 33 with both grooves, the cylindrical cover 2
This has the advantage that it is not necessary to fix the lower end of the 7 "to the fixed block 24" with the screw 32. However, the band set 41 of the second conventional example has the complexity of having to manually rotate the worm gear 43 located in the vicinity of the flat plate gear 42, which is still satisfactory from the standpoint of reducing the number of work steps. is not.

[0010]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide an easily removable cover for covering the driving portion of the torsional vibration part feeder.

[0011]

[Means for Solving the Problems] The above object is a cylinder formed by abutting the linear edges of two arcuate curved plates against each other for covering the driving portion of the torsional vibration part feeder. -Shaped cover, the lower end of the cylindrical cover is inserted into the outer periphery of the low columnar fixed block of the drive unit to a predetermined depth to be self-supported, and at least one of the butting of the curved plates is Lever crank mechanism of a locking portion provided on a curved plate of the above, a hooking link serving as a connecting rod provided on the other curved plate having a locking end to the locking portion, and an opening / closing lever serving as a lever And a drive cover of a torsional vibration part feeder characterized by being tightened by a booster fastener.

[0012]

At least one of the straight edges of the two arcuate curved plates constituting the cylindrical cover of the drive unit is butted to each other at the engaging portion fixed to one curved plate and the other curved plate. Since the tightened fastener is simply tightened and released by the fixed booster, the man-hours required for attaching and detaching the cover are remarkably reduced.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A drive section cover for a torsional vibration parts feeder according to an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a partially cutaway side view of a torsional vibration parts feeder 1 to which a drive unit cover 27 of the embodiment is attached. Since the bowl 11 for accommodating and transferring the articles and the drive section 21 for applying the torsional vibration to the bowl 11 are basically the same as the torsional vibration parts feeder 2 of the first conventional example shown in FIG. 7,
The same components are denoted by the same reference numerals without the ('), and the description thereof is omitted. Only the attachment of the drive unit cover 27 and other different portions will be described.

The drive unit cover 27 is shown in FIG. 1, FIG. 2 which is a view in the direction of the [2]-[2] line in FIG. 1, and FIG. 3 which is an exploded perspective view of only the drive unit cover 27. There is. That is, the two 1/2 arc-shaped curved plates 27a and 27b
Cylindrical cover 2 by abutting the respective linear edges of the
7 is formed, one of the abutments is openably and closably joined by two slide hinges 51 provided on the upper and lower sides, and the other abutment is locked by an insertion guide 53 at the upper end portion thereof, and substantially at the center of the height. In part, it is tightened by a booster 61, commonly referred to as a patchon or T-shaped fastener. The alternate long and short dash line in FIG. 2 indicates the curved plates 27a and 27b before being attached.

The detachable hinge 51 is a female member 5 having a pin hole h.
Two 1a are attached to one end of the curved plate 27a at the upper and lower sides, and a male member 51b having a pin P is attached to a corresponding portion of the end of the other curved plate 27b.
The pin P of 1b is inserted into the pin hole h of the female member 51a from above and joined.

The insertion guide 53 is attached to the inner surface of the upper end portion of the end edge of one curved plate 27a, and the male member 53b is attached to the corresponding portion of the inner surface of the end edge of the other curved plate 27b. By inserting the male member 53b into the gap formed between 53a and the inner surface of the curved plate 27a, the curved plates 27a and 27b can be easily aligned during the abutting, and the surfaces of the curved plates 27a and 27b that have been fitted together are subjected to an external force. It is provided to prevent shifting due to

The booster fastener 61 mounted on the curved plate 27b has the locking member 62 mounted on the curved plate 27a, and the latch 64 at the tip of the hooking link 63 is hooked, and then the opening / closing lever 65 is placed on the side opposite to the locking portion 62. Bending plates 27a and 27
It is designed to tighten with b. That is, with reference to FIG. 1 and FIG. 4 which is an enlarged side view of the booster 61, the booster 61 is bifurcated on a support member 69 in the shape of a letter fixed to the outer surface of the end portion of the curved plate 27b. Both ends of one end of the opening / closing lever 65 are pivotally attached by pins 68, 68 ′,
A handle 66 is provided at the other end of the opening / closing lever 65. Also, both ends of one end of the hooking link 63 are rotatably attached to pins 67, 67 'at approximately the center of the length of the bifurcated opening / closing lever 65, and a latch 64 is hooked at the other end. The locking member 62 to be fixed is fixed.

Further, as shown in FIG. 3, a booster fastener 6
Although the mounting height is different from that of 1, the female member 53a of the insertion guide 53 is provided on the inner surface of the end portion of the curved plate 27a, and the curved plate 27a
A male member 53b is attached to the inner surface of the edge portion of b.

Curved plates 27a and 27b indicated by a chain double-dashed line in FIG.
Indicates the state before the butting, and from this state, the curved plate 27a
The respective edges of the curved plates 27a and 27b are abutted so that the male member 53b on the curved plate 27b is inserted into the gap between the female member 53a of the upper insertion guide 53 and the curved plate 27a. At the same time, the opening / closing lever 65 is tilted toward the locking portion 62, the latch 64 at the tip of the hooking link 63 is hooked on the locking member 62 as shown by the chain line, and then the opening / closing lever 65 is bent as shown by the solid line. The locking portion 62 is pulled up to a position in contact with the plate 27b, that is, by the hook link 63 entering between the bifurcated opening / closing levers 65 and the pin 67 being brought closer to the curved plate 27b side than the pin 68. Then, the curved plates 27a and 27b are tightened by abutting their edges.

In this booster 61, it is assumed that the distance L from the pin 68 to the point of action 72 of the handle 66 is twice the distance l from the pin 68 to the pin 67 (L).
= 2l), the force F ′ acting on the pin 67 by the principle of leverage is twice the force f acting on the point of action 72 (F ′ = 2
f). Since the force F acting on the engagement point 71 between the engagement portion 62 and the latch 64 is equal to the force F ′ exerted on the pin 67 connected by the latch 64 and the hooking link 63 (F = F ′),
The locking point 71 has a force (F) that is twice the force f that acts on the action point 72.
= 2f) will be tightened.

When the tightening device 61 is tightened, the locking point 71
The pin 67 as the other end of the hooking link 63 including the latch 64 is rotated about the center point, and the pin 67 moves the locking point 71.
When the pin 67 is at a point (dead point) on the extension of the line connecting the pin 68 and the pin 68, the pin 67 is farthest from the pin 68 and is most strongly tightened. When the pin 67 is closer to the curved plate 27b than the pin 68 (solid line position in FIG. 4), the pin 67 is closer to the pin 68 than the dead center position and the tightening force is slightly relaxed. However, since the force for moving the pin 67 upward beyond the dead point is required to release the tightening, the tightening is not loosened and released naturally.

Although the booster 61 has elements corresponding to the lever and the connecting rod in the four-bar rotation mechanism,
Since it does not have an element corresponding to a crank, it cannot be said to be a true four-bar rotation mechanism, but when tightening and releasing, the locking point 71 slides and moves slightly, so that the locus of movement is on the circumference. It can be said that it is a pseudo four-bar rotation mechanism equipped with a virtual crank.

The drive section cover 27 of the torsional vibration part feeder 1 of the present embodiment is not limited to the first tightening method described above.
The cover 27 'of the torsional vibration part feeder 2 of the conventional example and the cover 27 "of the torsional vibration part feeder 3 of the second conventional example are different. That is, the bowl 1'in the first conventional example of FIG. Insert the upper end of the drive cover 27 'into the lower skirt 14' of the
In addition, in the second conventional example of FIG. 11, the outer diameter of the bowl 11 ″ is made larger than the outer diameter of the drive portion 21 ″ to deepen the overhang, so that the electromagnets 26 ′, 26 ″ are exposed from the outside. Although the entry of foreign matter is suppressed, the work of attaching and detaching the drive unit cover 27 'is troublesome in the first conventional example, and the installation space is large in the second conventional example. In the example, the electromagnet 2 is fixed at a fixed position between the bottom plate of the bowl 11 and the movable block 22.
A ring-shaped dustproof member 15 is provided so as to surround a portion corresponding to the upper part of 6 to prevent foreign matter from entering from the outside. Therefore, troublesomeness at the time of attaching and detaching the drive unit cover 27 is avoided, and the installation space is not unnecessarily enlarged.

Further, regarding the fixed block 24, in the first conventional example of FIG. 7, the lower end of the cylindrical drive unit cover 27 'is placed on the bottom plate 28' having a larger outer diameter than the fixed block 24 ', so that the fixed block is fixed. In addition to requiring an integrated process of the block 24 'and the bottom plate 28', the cover 27 'is a non-tightened attachment, and in order to prevent looseness of the drive unit cover 27' due to play around the fixed block 24 ', the fixed block is fixed. It was necessary to make the insertion depth into 24 'large, and the fixed block 24' had a height higher than necessary. Also, FIG.
Also in the second conventional example, in order to prevent the curved plates 27a "and 27b" at the butting points of the drive unit cover 27 "from being displaced, the fixed block 24" is provided with a height higher than necessary. It was On the other hand, in the present embodiment, in addition to the fact that the insertion guides 53 prevent the curved plates 27a and 27b from being displaced at the abutting points of the drive unit cover 27, the drive unit cover 27 is attached to the outer periphery of the fixed block 24. Since it can be tightened to the side wall and the insertion depth of the fixed block 24 into the outer peripheral side wall can be made shallow, the fixed block 24 has a stepped side wall and the bottom plate is omitted, and it is necessary for the step portion 24a. The drive block 27 is inserted with a proper insertion depth, and the fixed block 24 is inserted.
It also prevents the weight of the robot from unnecessarily increasing.

The drive unit cover 27 of the torsional vibration part feeder 1 of the present embodiment is constructed as described above, but the mounting thereof is performed by the curved plate 27a in the state of the one-dot chain line shown in FIG.
27b are connected and integrated by a detachable hinge 51, are hung on the stepped portion 24a of the fixed block 24 in the drive unit 21 and are wound, while the curved plate 27 is inserted by the insertion guide 53.
Butt the edges of a and 27b. Booster 61 at the same time
The opening / closing lever 65 is tilted toward the locking portion 62 to hook the latch 64 on the locking portion 62, and then the opening / closing lever 65 is tilted in the opposite direction to stop at the position in contact with the curved plate 27b. The cover 27 is tightened around the drive unit 21. The removal of the drive unit cover 27 can be performed in the reverse order. As described above, the attachment / detachment is extremely simple, and the man-hours for attachment / detachment during assembly and disassembly maintenance of the torsional vibration part feeder 1 are significantly reduced.

Although the embodiment of the present invention has been described above, the present invention is not limited to this, and various modifications can be made based on the technical idea of the present invention.

For example, in the present embodiment, the curved plate 27a,
One of the butts of 27b is joined by the pull-out adjusting plate 51, and the other of the 27b is guided by the insertion guide 53 and tightened by the booster fastener 61. As a first modified example, as shown in FIGS. As shown, both abutments are inserted into respective insertion guides 53, 53 '(curved plates 27a, 27b, respectively).
Bent pieces 53a, 53a 'fixed to the strips, and strips 53b, 53b' engaged with these as shown in FIG. 5) and booster fasteners 61, 61 '(mutually identical structure). They may be joined together and tightened.

Further, in the present embodiment, the curved plates 27a, 27
Although the respective straight edges of b are simply butted against each other, a tape-like sheet having rubber elasticity may be sandwiched between the butts.

Further, in the present embodiment, the fixed block 24
The side wall of the drive unit 27 is stepped and the drive unit cover 27 is attached to the step portion 24a.
I installed the fixed block 2 if necessary.
A bottom plate having a diameter larger than 4 may be integrated with the bottom surface of the fixed block 24 to replace the stepped portion 24a.

In this embodiment, the ring-shaped dustproof member 15 is attached for dustproofing. Instead of this, the outer peripheral lower end of the bowl 11 and the upper end of the drive unit cover 27 are made of a flexible sheet material. You can connect them.

Further, in the present embodiment, the torsional vibration parts feeder has been described as a transfer device for transferring the articles or parts in the bowl 11, but it has a drive section for giving similar torsional vibrations and transfers the articles upward. Needless to say, the spiral vibration parts feeder of the present invention also includes a spiral elevator and a sieving feeder for sieving while transporting articles.

[0033]

As described above, since the drive cover of the torsional vibration parts feeder of the present invention can tighten and release the abutting of the straight edges of the arcuate curved plate with a booster, the tightening can be released. The attachment / detachment is extremely simple, and the work man-hours during assembly and disassembly and maintenance are significantly reduced.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view of a torsional vibration parts feeder to which a drive unit cover of the present embodiment is attached.

FIG. 2 is a view taken along the line [2]-[2] in FIG.

FIG. 3 is an exploded perspective view of a drive unit cover according to the present embodiment.

FIG. 4 is an enlarged side view of the booster fastener used in this embodiment.

FIG. 5 is a view corresponding to FIG. 2 and is a view in the direction of an arrow of the first modified example.

FIG. 6 is a view corresponding to FIG. 3, and is an exploded perspective view of a drive unit cover according to a first modification.

FIG. 7 is a partially cutaway side view of a torsional vibration parts feeder to which a drive unit cover of a first conventional example is attached.

8 is a sectional view taken along line [8]-[8] in FIG.

FIG. 9 is an enlarged plan view of a joining portion with the screw in FIG.

FIG. 10 is a view corresponding to FIG. 9, and is an enlarged plan view of a joint in which a rod-shaped rubber having both grooves is used instead of a screw.

FIG. 11 is a partially cutaway side view of a torsional vibration parts feeder to which a drive unit cover of a second conventional example is attached.

FIG. 12 is an enlarged plan view of a band set used in a second conventional example.

13 is a view taken along line [13]-[13] in FIG.

[Explanation of symbols]

 1 Torsional Vibration Parts Feeder 11 Bowl 21 Drive Unit 27 Drive Unit Cover 51 Sliding Hinge 53 Insertion Guide 61 Booster Fastener 62 Locking Part 63 Hooking Link 64 Latch 65 Opening / Covering 67 Pin 68 Pin 69 Supporting Member

Claims (3)

[Claims] 1. A cylindrical cover for covering a driving part of a torsional vibration parts feeder, which is formed by abutting straight edges of two arcuate curved plates against each other, and a lower end of the cylindrical cover. Part is inserted into the outer periphery of the low columnar fixed block of the drive part at a predetermined depth to be self-supported, and at least one of the abutting parts of the curved plates is an engaging part provided on the one curved plate. , Tightened by a booster fastener comprising a lever crank mechanism of a hooking link as a connecting rod provided on the other curved plate having an engaging end to the engaging portion and an opening / closing lever as a lever. The drive unit cover of the torsional vibration parts feeder, which is characterized in that 2. A male member of an insertion guide provided on the other curved plate is inserted into a gap formed by the abutting of the two curved plates formed by a female member of the insertion guide provided on the one curved plate. The drive section cover of the torsional vibration part feeder according to claim 1, wherein the drive section cover is positioned by the following method. 3. The driving part cover for the torsional vibration part feeder according to claim 1, wherein one of the butting of the two curved plates is connected by a hinge, and the other is tightened by the booster fastener. .