CA1232862A - Adjustable spring angle on vibratory bowl feeders - Google Patents
Adjustable spring angle on vibratory bowl feedersInfo
- Publication number
- CA1232862A CA1232862A CA000445742A CA445742A CA1232862A CA 1232862 A CA1232862 A CA 1232862A CA 000445742 A CA000445742 A CA 000445742A CA 445742 A CA445742 A CA 445742A CA 1232862 A CA1232862 A CA 1232862A
- Authority
- CA
- Canada
- Prior art keywords
- leaf spring
- base
- face
- faces
- angle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G27/00—Jigging conveyors
- B65G27/10—Applications of devices for generating or transmitting jigging movements
- B65G27/32—Applications of devices for generating or transmitting jigging movements with means for controlling direction, frequency or amplitude of vibration or shaking movement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G27/00—Jigging conveyors
- B65G27/08—Supports or mountings for load-carriers, e.g. framework, bases, spring arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigging Conveyors (AREA)
- Springs (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A vibratory parts feeder is provided having a base element and a cross arm element supported above the base through the use of leaf springs which are mounted to the base and the cross arm through and with a plurality of interchangeable wedges and flat spacers such that the angle of the leaf springs between the base and the cross-arm can be readily changed to facilitate different operat-ing conditions of the vibratory parts feeder.
A vibratory parts feeder is provided having a base element and a cross arm element supported above the base through the use of leaf springs which are mounted to the base and the cross arm through and with a plurality of interchangeable wedges and flat spacers such that the angle of the leaf springs between the base and the cross-arm can be readily changed to facilitate different operat-ing conditions of the vibratory parts feeder.
Description
aye ADJUSTABLE SPRING ANGLE ON VIBRATORY BOWL FEEDERS
The invention has to do with providing adjustability for leaf spring suspension elements in vibratory bowl feeders. More specifically, interchangeable components are provided in a suspension structure to allow adjustment of the angles of the leaf spring mountings of the feeder.
Vibratory bowl feeder apparatus, typically including a base and a driven component mounted on spring to the base, are vibrated through the use of an electromagnetic exciter. The frequency of the exciter's operation is dictated by the line frequency of the power source. Since feed rates vary for different materials or articles and since a bowl feeder should have some flexibility over the range and type of material that it is able to feed, some adjustment of the angle of motion is desirable.
According to an aspect of this invention, a vibratory material feeder of the type having a material feeder resiliently mounted to a base by a leaf spring suspension, the material feeder and the base having leaf spring mounting faces, and means for angularly adjusting the plane of the leaf spring suspension for changing the frequency of the material feeder, the angular adjusting means comprises at least one wedge member sandwiched between one of the leaf spring suspension and one of the associated leaf spring mounting faces, the wedge member having one face parallel with the plane of the leaf spring suspension and a second face non-parallel with the plane of the leaf spring suspension, the faces having an aperture there through, and a bolt extending through the apertures in the leaf spring and the faces of the wedge member connecting the one end of the leaf spring suspension to the associated leaf spring mounting face.
According to another aspect of the invention, a method of adjusting the leaf spring suspension of a vibratory bowl feeder having a base and a driven component mounted on leaf springs to the base, the leaf springs being removably attached at each end to spring mounting blocks respectively forming part of the base and the driven member, the method comprises inserting wedge ok I'
The invention has to do with providing adjustability for leaf spring suspension elements in vibratory bowl feeders. More specifically, interchangeable components are provided in a suspension structure to allow adjustment of the angles of the leaf spring mountings of the feeder.
Vibratory bowl feeder apparatus, typically including a base and a driven component mounted on spring to the base, are vibrated through the use of an electromagnetic exciter. The frequency of the exciter's operation is dictated by the line frequency of the power source. Since feed rates vary for different materials or articles and since a bowl feeder should have some flexibility over the range and type of material that it is able to feed, some adjustment of the angle of motion is desirable.
According to an aspect of this invention, a vibratory material feeder of the type having a material feeder resiliently mounted to a base by a leaf spring suspension, the material feeder and the base having leaf spring mounting faces, and means for angularly adjusting the plane of the leaf spring suspension for changing the frequency of the material feeder, the angular adjusting means comprises at least one wedge member sandwiched between one of the leaf spring suspension and one of the associated leaf spring mounting faces, the wedge member having one face parallel with the plane of the leaf spring suspension and a second face non-parallel with the plane of the leaf spring suspension, the faces having an aperture there through, and a bolt extending through the apertures in the leaf spring and the faces of the wedge member connecting the one end of the leaf spring suspension to the associated leaf spring mounting face.
According to another aspect of the invention, a method of adjusting the leaf spring suspension of a vibratory bowl feeder having a base and a driven component mounted on leaf springs to the base, the leaf springs being removably attached at each end to spring mounting blocks respectively forming part of the base and the driven member, the method comprises inserting wedge ok I'
-2- ~2328~
spacers, of which opposed faces are angled to one another, between the spring ends and the respective mounting block.
The advantages of this invention and a complete understanding thereof will be apparent from the following description and study of the drawing figures wherein:
Figure 1 presents a plan view of a vibratory bowl feeder;
Figure 2 present a side elevation view of Figure l;
Figures 3, 4 and 5 present a single leaf spring assembly with several combinations of spacers yielding several different leaf spring angles.
The Figure 1 view is a plan view of a vibratory bowl feeder generally 10 having a base 12 that supports a cross arm element 14 to which a bowl, not shown, is attached in a conventional manner. Each of the appendages such as 16 of the cross arm element 14 are attached to an individual stack of leaf springs such as 20. Each leaf spring stack 20 may be composed of either a single leaf or a plurality of leaves and the two leaf spring stacks shown here are simple an example of a preferred embodiment.
The elevation view of Figure 2 shows the cross arm element 14, which is a supported member, and the 1~3~
appendage 16 supported by the four leaf spring stacks such as 20 to the base 12. The base 12 is a generally rectangular plate of significant mass that is provided with cutouts such as 22 to accommodate mounting of the leaf springs within the general perimeter of the machine.
Each cutout 22 projects normally from the edges of the base toward the center thereof and is machined generally as shown in Figure 2 so that at least a first face 24, hereinafter the base face of the base cutout, is formed at an angle to the vertical reference 26. In a preferred embodiment this base face angle would be 25.
figure 2 also shows that the appendages such as 16 are provided with an appendage face such as 30 that is machined on an angle relative to the vertical reference 26 in a direction opposite that of the first face angle of the base cutout. In a preferred embodiment this may be an angle of 15.
Each end of each leaf spring 20 is provided with a through aperture for accommodating a spring clamping bolt such as 32. There are eight identical bolts used in the embodiment shown but other fastening arrangements are contemplated. The bolts are ultimately received in drilled and tapped bores in respective base faces 24 and appendage faces 30 of the base 12 and the cross arm element 14 respectively. All the spring clamping bolt receiving bores are drilled at an angle to the horizontal plane of equal slope. In this embodiment the bores are 123~
drilled at 20 from the horizontal and are parallel to each other.
In order to provide the leaf spring mounting angle's adjustability a plurality of flat spacers and wedges are provided For purposes of this disclosure a flat spacer is a rectangular piece of stock having a given thickness and large flat faces on each side thereof with these faces being generally parallel to each other. These flat spacers, such as the one shown as 40 in Figure 2, are also provided with a hole that allows passage of the spring clamping bolt 32.
The wedges such as 42 in Figure 2 are similar to the flat spacers 40 except that the opposite large flat faces are formed at different angles to the normal plane thereof. For instance, a first face 44 is parallel to the normal plane while a second face 46 is formed at 5 from the normal plane, thus 5 relative to the first face 44.
The wedges are also provided with a hole to accommodate the spring clamp bolts such as 32.
The flat spacers 40 and the wedges 42 are arranged relative to the leaf spring stack 20, to provide various leaf spring angles shown in Figures 3 through 5.
In Figure 3 the leaf spring stacks are positioned at a 15 angle to the vertical as shown by included angle A. In this figure it can be seen that the appendage face 30 is formed on the appendage 16 of the cross arm element at an angle of 15, reference 50, from the vertical ~23~8~
reference 26. On the base 12 it can be seen that the face 24 is machined or formed at an angle of 25, reference 52, from the vertical reference 26. These face angles of the appendage face 30 and the cutout face 24 are constant in all of the exemplary versions shown but could be changed depending on designer's preference.
To get the 15 angle A through the leaf spring embodiment shown in Figure 3 the following arrangement of spacers is used. Since the cross arm appendage face 30 is already machined at 15 no spacers are needed between the upper ends of the leaf spring stacks and the appendage face 30. A wedge 42 is needed outboard of the leaf spring stacks to assure that the head of the spring clamping bolt contacts a surface which remains perpendicular to the major axis of the bore 34 and the bolt is not deflected by eccentric loads. The wedge 42 provides a face that is parallel to the appendage face 30 of the cross arm appendage. At the base cutout 22 where the base face 24 is formed at 25 to vertical two identical wedges aye and 42b are needed between the leaf spring stacks and the base face 24. The two wedges aye and 42b have their normal faces abutting each other so that a 10 wedge is constructed thus bringing the base face actual angle down to 15 from 25. Outboard of the springs a single wedge ~42c~ is used to assure that the bolt head aye contacts a surface which is 20 from the vertical reference an it not deflected by eccentric loads.
~Z3Z8~;z In the Figure 4 embodiment a 20 included angle B
between the leaf spring stack 20 and the vertical reference 26 is developed. Of course the elements used here are the same as those used in Figures l, 2 and 3 except that the flat spacers and wedges are arranged differently. Specifically at the cross arm a wedge 42d is placed between the leaf spring 20 and the appendage face 30 to steepen the face angle from 15 at 50 to 20. Since this face provides a complimentary angle for the spring clamping bolt 32 a flat spacer 40 is used outboard or the springs. At the base, where the base face is 25 (52) a wedge eye is used to bring the angle to 20 between the leaf spring 20 and the vertical reference 26. Outboard of the leaf spring 20 only a flat spacer is needed to assure concentric loading for the spring clamping bolt aye.
In the Figure 5 embodiment a 25 included angle C
is provided by inserting 10 of wedges, namely wedges 42f and 42g of 5 each between the leaf spring stacks and the appendage face 30. Outboard at the top end of the leaf spring stack a third wedge 421 is needed to get the contact surface alignment back to 20 so the spring clamp bolt 32 is concentrically loaded. At toe base no wedges are needed as the base face 24 is formed at 25, there-fore, the leaf spring stack is directly mounted adjacent the base face 24. A wedge 42j is used, however, to realign the spring clamp bolt aye and the threaded bore in the cross arm.
~3~i362 Although this disclosure deals with wedges having the face 5 from the normal plane and specific appendage face and base cutout face angular displacements it should be obvious that this disclosure attempts to set forth a S preferred embodiment and thus minor changes in angular values will be considered within the scope of this disk closure. Furthermore, the quantities of elements are not critical to the invention hence bases with more than four cutouts and cross arms with a plurality of arms are also contemplated.
Thus it can be seen that there has been provided a vibratory bowl feeder having adjustable spring angles provided by a set of flat spacers and wedges that fully meets the objects of the invention. The inventor contem-plates that several nuances of design are possible and such variations are intended to fall within the scope of the following claims.
spacers, of which opposed faces are angled to one another, between the spring ends and the respective mounting block.
The advantages of this invention and a complete understanding thereof will be apparent from the following description and study of the drawing figures wherein:
Figure 1 presents a plan view of a vibratory bowl feeder;
Figure 2 present a side elevation view of Figure l;
Figures 3, 4 and 5 present a single leaf spring assembly with several combinations of spacers yielding several different leaf spring angles.
The Figure 1 view is a plan view of a vibratory bowl feeder generally 10 having a base 12 that supports a cross arm element 14 to which a bowl, not shown, is attached in a conventional manner. Each of the appendages such as 16 of the cross arm element 14 are attached to an individual stack of leaf springs such as 20. Each leaf spring stack 20 may be composed of either a single leaf or a plurality of leaves and the two leaf spring stacks shown here are simple an example of a preferred embodiment.
The elevation view of Figure 2 shows the cross arm element 14, which is a supported member, and the 1~3~
appendage 16 supported by the four leaf spring stacks such as 20 to the base 12. The base 12 is a generally rectangular plate of significant mass that is provided with cutouts such as 22 to accommodate mounting of the leaf springs within the general perimeter of the machine.
Each cutout 22 projects normally from the edges of the base toward the center thereof and is machined generally as shown in Figure 2 so that at least a first face 24, hereinafter the base face of the base cutout, is formed at an angle to the vertical reference 26. In a preferred embodiment this base face angle would be 25.
figure 2 also shows that the appendages such as 16 are provided with an appendage face such as 30 that is machined on an angle relative to the vertical reference 26 in a direction opposite that of the first face angle of the base cutout. In a preferred embodiment this may be an angle of 15.
Each end of each leaf spring 20 is provided with a through aperture for accommodating a spring clamping bolt such as 32. There are eight identical bolts used in the embodiment shown but other fastening arrangements are contemplated. The bolts are ultimately received in drilled and tapped bores in respective base faces 24 and appendage faces 30 of the base 12 and the cross arm element 14 respectively. All the spring clamping bolt receiving bores are drilled at an angle to the horizontal plane of equal slope. In this embodiment the bores are 123~
drilled at 20 from the horizontal and are parallel to each other.
In order to provide the leaf spring mounting angle's adjustability a plurality of flat spacers and wedges are provided For purposes of this disclosure a flat spacer is a rectangular piece of stock having a given thickness and large flat faces on each side thereof with these faces being generally parallel to each other. These flat spacers, such as the one shown as 40 in Figure 2, are also provided with a hole that allows passage of the spring clamping bolt 32.
The wedges such as 42 in Figure 2 are similar to the flat spacers 40 except that the opposite large flat faces are formed at different angles to the normal plane thereof. For instance, a first face 44 is parallel to the normal plane while a second face 46 is formed at 5 from the normal plane, thus 5 relative to the first face 44.
The wedges are also provided with a hole to accommodate the spring clamp bolts such as 32.
The flat spacers 40 and the wedges 42 are arranged relative to the leaf spring stack 20, to provide various leaf spring angles shown in Figures 3 through 5.
In Figure 3 the leaf spring stacks are positioned at a 15 angle to the vertical as shown by included angle A. In this figure it can be seen that the appendage face 30 is formed on the appendage 16 of the cross arm element at an angle of 15, reference 50, from the vertical ~23~8~
reference 26. On the base 12 it can be seen that the face 24 is machined or formed at an angle of 25, reference 52, from the vertical reference 26. These face angles of the appendage face 30 and the cutout face 24 are constant in all of the exemplary versions shown but could be changed depending on designer's preference.
To get the 15 angle A through the leaf spring embodiment shown in Figure 3 the following arrangement of spacers is used. Since the cross arm appendage face 30 is already machined at 15 no spacers are needed between the upper ends of the leaf spring stacks and the appendage face 30. A wedge 42 is needed outboard of the leaf spring stacks to assure that the head of the spring clamping bolt contacts a surface which remains perpendicular to the major axis of the bore 34 and the bolt is not deflected by eccentric loads. The wedge 42 provides a face that is parallel to the appendage face 30 of the cross arm appendage. At the base cutout 22 where the base face 24 is formed at 25 to vertical two identical wedges aye and 42b are needed between the leaf spring stacks and the base face 24. The two wedges aye and 42b have their normal faces abutting each other so that a 10 wedge is constructed thus bringing the base face actual angle down to 15 from 25. Outboard of the springs a single wedge ~42c~ is used to assure that the bolt head aye contacts a surface which is 20 from the vertical reference an it not deflected by eccentric loads.
~Z3Z8~;z In the Figure 4 embodiment a 20 included angle B
between the leaf spring stack 20 and the vertical reference 26 is developed. Of course the elements used here are the same as those used in Figures l, 2 and 3 except that the flat spacers and wedges are arranged differently. Specifically at the cross arm a wedge 42d is placed between the leaf spring 20 and the appendage face 30 to steepen the face angle from 15 at 50 to 20. Since this face provides a complimentary angle for the spring clamping bolt 32 a flat spacer 40 is used outboard or the springs. At the base, where the base face is 25 (52) a wedge eye is used to bring the angle to 20 between the leaf spring 20 and the vertical reference 26. Outboard of the leaf spring 20 only a flat spacer is needed to assure concentric loading for the spring clamping bolt aye.
In the Figure 5 embodiment a 25 included angle C
is provided by inserting 10 of wedges, namely wedges 42f and 42g of 5 each between the leaf spring stacks and the appendage face 30. Outboard at the top end of the leaf spring stack a third wedge 421 is needed to get the contact surface alignment back to 20 so the spring clamp bolt 32 is concentrically loaded. At toe base no wedges are needed as the base face 24 is formed at 25, there-fore, the leaf spring stack is directly mounted adjacent the base face 24. A wedge 42j is used, however, to realign the spring clamp bolt aye and the threaded bore in the cross arm.
~3~i362 Although this disclosure deals with wedges having the face 5 from the normal plane and specific appendage face and base cutout face angular displacements it should be obvious that this disclosure attempts to set forth a S preferred embodiment and thus minor changes in angular values will be considered within the scope of this disk closure. Furthermore, the quantities of elements are not critical to the invention hence bases with more than four cutouts and cross arms with a plurality of arms are also contemplated.
Thus it can be seen that there has been provided a vibratory bowl feeder having adjustable spring angles provided by a set of flat spacers and wedges that fully meets the objects of the invention. The inventor contem-plates that several nuances of design are possible and such variations are intended to fall within the scope of the following claims.
Claims (10)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A vibratory material feeder of the type having a material feeder resiliently mounted to a base by a leaf spring suspension, the material feeder and the base having leaf spring mounting faces, and means for angularly adjusting the plane of the leaf spring suspension for changing the frequency of the material feeder, the angular adjusting means comprising at least one wedge member sandwiched between one end of the leaf spring suspension and one of the associated leaf spring mounting faces, the wedge member having one face parallel with the plane of the leaf spring suspension and a second face non-parallel with the plane of the leaf sprint suspension, the faces having an aperture there through, and a bolt extending through the apertures in the leaf spring and the faces of the wedge member connecting the one end of the leaf spring suspension to the associated leaf spring mounting face.
2. In the vibratory feeder according to claim 1, wherein the leaf spring mounting faces are non-vertical.
3. In the vibratory feeder according to claim 1 or 2, wherein the leaf spring mounting faces are non-parallel.
4. In a vibratory feeder according to claim 3, wherein the material feeder includes a cross arm element having a leaf spring mounting face on each arm and the base having a spring mounting face for each leaf spring suspension mounted to each cross arm element leaf spring mounting face.
5. In a vibratory feeder according to claim 4, wherein a plurality of wedge members are sandwiched between either end or both ends of the leaf spring suspension and the associated leaf spring mounting face or faces.
6. In the vibratory feeder according to claim 5, wherein the base is provided with cutouts machined with a plurality of leaf spring mounting faces formed at an angle to vertical and the cross arm element is provided with appendage leaf spring mounting faces formed at an angle from vertical.
7. In the vibratory feeder according to claim 6, wherein each base leaf mounting face angle and each appendage leaf spring mounting face angle are dissimilar.
8. In the vibratory feeder according to claim 4, wherein a plurality of leaf spring suspension stacks are attached to the base and to the cross arm element, the base having plurality of cutouts extending radially inwardly from a periphery of the base, each cutout having a cutout face formed at an angle to a vertical reference plane of the vibratory feeder, the cutout faces having a threaded bore in a non-perpendicular relationship therewith;
the cross arm element having a plurality of appendages, each appendage formed with an appendage face at an angle to the vertical reference plane of said vibratory feeder, the angle of the appendage face being different from the angle of the cutout face, the appendage face having a threaded bore in a non-perpendicular relationship therewith and in parallel relationship with base cutout threaded bore.
the cross arm element having a plurality of appendages, each appendage formed with an appendage face at an angle to the vertical reference plane of said vibratory feeder, the angle of the appendage face being different from the angle of the cutout face, the appendage face having a threaded bore in a non-perpendicular relationship therewith and in parallel relationship with base cutout threaded bore.
9. In the vibratory feeder according to claim 8, wherein the leaf spring suspensions are fastened at one end to the base cutout faces and project upwardly from the base cutout faces at an angle from said vertical plane dictated by the angle of the cutout face; and a plurality of wedge members are sandwiched between the appendage faces of the cross arm element and the opposite ends of the leaf spring suspensions, the ends of the leaf spring suspensions fastened to faces by bolts passing through apertures in said ends.
10. A method of adjusting the leaf spring suspension of a vibratory bowl feeder having a base and a driven component mounted on leaf springs to the base, the leaf springs being removably attached at each end to spring mounting blocks respectively forming part of the base and the driven member, the method comprising inserting wedge spacers, of which opposed faces are angled to one another, between the spring ends and the respective mounting block.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US45986483A | 1983-01-21 | 1983-01-21 | |
| US459,864 | 1983-01-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1232862A true CA1232862A (en) | 1988-02-16 |
Family
ID=23826432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000445742A Expired CA1232862A (en) | 1983-01-21 | 1984-01-20 | Adjustable spring angle on vibratory bowl feeders |
Country Status (4)
| Country | Link |
|---|---|
| AU (1) | AU558683B2 (en) |
| CA (1) | CA1232862A (en) |
| DE (1) | DE3402138A1 (en) |
| GB (1) | GB2135753B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999015282A1 (en) * | 1997-09-22 | 1999-04-01 | Carlos Galvan De La Garza | Vibration transmission mechanism |
| CN2480619Y (en) * | 2000-04-05 | 2002-03-06 | 韩德玮 | Swing device with back spring force |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB582806A (en) * | 1943-03-15 | 1946-11-28 | Nordberg Manufacturing Co | Improvements in vibrator screens |
| CA941397A (en) * | 1971-11-12 | 1974-02-05 | Daniel J. Baljet | Spring system for vibratory parts feeders |
-
1984
- 1984-01-20 GB GB08401476A patent/GB2135753B/en not_active Expired
- 1984-01-20 CA CA000445742A patent/CA1232862A/en not_active Expired
- 1984-01-23 AU AU23674/84A patent/AU558683B2/en not_active Ceased
- 1984-01-23 DE DE19843402138 patent/DE3402138A1/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| AU558683B2 (en) | 1987-02-05 |
| DE3402138C2 (en) | 1988-07-28 |
| AU2367484A (en) | 1984-07-26 |
| GB8401476D0 (en) | 1984-02-22 |
| GB2135753A (en) | 1984-09-05 |
| DE3402138A1 (en) | 1984-07-26 |
| GB2135753B (en) | 1986-07-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |