CA2581899A1 - Driving mechanism for shaking table - Google Patents
Driving mechanism for shaking table Download PDFInfo
- Publication number
- CA2581899A1 CA2581899A1 CA 2581899 CA2581899A CA2581899A1 CA 2581899 A1 CA2581899 A1 CA 2581899A1 CA 2581899 CA2581899 CA 2581899 CA 2581899 A CA2581899 A CA 2581899A CA 2581899 A1 CA2581899 A1 CA 2581899A1
- Authority
- CA
- Canada
- Prior art keywords
- connecting rod
- drive shaft
- rocker
- junction
- axis
- 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.)
- Abandoned
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
- B65G27/12—Applications of devices for generating or transmitting jigging movements of shaking devices, i.e. devices for producing movements of low frequency and large amplitude
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
A rocker or slider imparts reciprocating motion to a shaking tray on which particulate material advances. A connecting rod is mounted to swivel relative to a drive shaft and is caused to rotate by the drive shaft. The connecting rod is mounted to pivot at a junction, of the connect-ing rod and the rocker or slider and causes the rocker or slider to reciprocate.
The junction is off-set from the axis.
The junction is off-set from the axis.
Description
This invention relates to an apparatus for causing material to advance from one stage to the next in a manufacturing process. More particularly this invention relates to apparatus for driving a shaking tray for causing particulate material including consumables and non-consumables such as metallic slugs to advance on the tray.
My U.S. patent no. 6,415,912, describes an apparatus for driving a shaking tray. The apparatus includes a number of components such as cams, followers, links, cranks and wrist pins.
I have invented a new apparatus having significantly fewer components but still capable of driving a shaking tray. Briefly, the new apparatus includes a drive shaft which rotates about an axis and a rocker or slider for imparting reciprocating motion to the shaking tray. A connecting rod is mounted to swivel relative to the drive shaft and is caused to rotate by the drive shaft. The connecting rod is mounted to pivot at a junction of the connecting rod and the rocker or slider and causes the rocker or slider to reciprocate. The junction is offset from the axis.
The driving apparatus for a shaking tray of the invention is described with reference to the accompanying drawings in which:
Figure 1 is a perspective view of a first embodiment of the driving apparatus together with a portion of a shaking tray;
Figure 2 is an elevation of the driving apparatus of Figure 1 together with a motor for causing the drive shaft of the apparatus to rotate;
Figures 3 and 4 are elevations of the components illustrated in Figure 2, in larger scale. In Figure 4, the position of the drive shaft is one quarter revolution past the position illustrated in Figure 3;
Figure 5 is a schematic representation of the connecting rod in two positions;
Figure 6 illustrates schematically the positions of the ear of the rocker in two positions;
Figure 7 is a graph which shows the speed of the connecting rod as the drive shaft rotates through one full revolution; and Figures 8 and 9 are elevations of a second embodiment of the driving apparatus in conjunction with a motor for driving the drive shaft and a portion of a shaking tray.
Like reference characters refer to like parts throughout the description of the drawings.
With reference to Figures 1 and 2, the driving apparatus, generally 10, is composed of a drive shaft 12, a connecting rod 14 or actuator and a rocker, generally 16.
The drive shaft is caused to rotate by a conventional electric motor 18 which is mounted to a base 20.
A collar 22 is attached by screws or a spline to the outer end of the drive shaft. An internally threaded sleeve 24 is mounted to the collar such that the longitudinal axis of the sleeve 24-24 is oriented at an oblique angle relative to the axis of rotation 26-26 of the drive shaft.
A bolt 28 is threadably received in the sleeve.
Connecting rod 14 interconnects the bolt and the rocker 16. The connecting rod is composed of two interconnected lower and upper eyebolts 32, 34. The lower eyebolt has a circular lower portion 32a in which an opening 36 is formed for receipt of bolt 28. The
My U.S. patent no. 6,415,912, describes an apparatus for driving a shaking tray. The apparatus includes a number of components such as cams, followers, links, cranks and wrist pins.
I have invented a new apparatus having significantly fewer components but still capable of driving a shaking tray. Briefly, the new apparatus includes a drive shaft which rotates about an axis and a rocker or slider for imparting reciprocating motion to the shaking tray. A connecting rod is mounted to swivel relative to the drive shaft and is caused to rotate by the drive shaft. The connecting rod is mounted to pivot at a junction of the connecting rod and the rocker or slider and causes the rocker or slider to reciprocate. The junction is offset from the axis.
The driving apparatus for a shaking tray of the invention is described with reference to the accompanying drawings in which:
Figure 1 is a perspective view of a first embodiment of the driving apparatus together with a portion of a shaking tray;
Figure 2 is an elevation of the driving apparatus of Figure 1 together with a motor for causing the drive shaft of the apparatus to rotate;
Figures 3 and 4 are elevations of the components illustrated in Figure 2, in larger scale. In Figure 4, the position of the drive shaft is one quarter revolution past the position illustrated in Figure 3;
Figure 5 is a schematic representation of the connecting rod in two positions;
Figure 6 illustrates schematically the positions of the ear of the rocker in two positions;
Figure 7 is a graph which shows the speed of the connecting rod as the drive shaft rotates through one full revolution; and Figures 8 and 9 are elevations of a second embodiment of the driving apparatus in conjunction with a motor for driving the drive shaft and a portion of a shaking tray.
Like reference characters refer to like parts throughout the description of the drawings.
With reference to Figures 1 and 2, the driving apparatus, generally 10, is composed of a drive shaft 12, a connecting rod 14 or actuator and a rocker, generally 16.
The drive shaft is caused to rotate by a conventional electric motor 18 which is mounted to a base 20.
A collar 22 is attached by screws or a spline to the outer end of the drive shaft. An internally threaded sleeve 24 is mounted to the collar such that the longitudinal axis of the sleeve 24-24 is oriented at an oblique angle relative to the axis of rotation 26-26 of the drive shaft.
A bolt 28 is threadably received in the sleeve.
Connecting rod 14 interconnects the bolt and the rocker 16. The connecting rod is composed of two interconnected lower and upper eyebolts 32, 34. The lower eyebolt has a circular lower portion 32a in which an opening 36 is formed for receipt of bolt 28. The
2 circumference of the opening is somewhat larger than that of the bolt so that the bolt is free to swivel in the opening.
A stem 32b extends upwardly from the circular portion of the lower eyebolt. A
threaded bore is formed in the stem for receipt of the threaded shaft 34a of the upper eyebolt. The circular upper end 34b of the upper eyebolt is connected by means of a pin 40 to an ear 42. The ear is bolted to an axle 44 which is free to rotate in bearings within the housing 46 of the rocker. A
boss or knob 48 is formed on the head of the pin to retain it in the eye of the eyebolt.
With reference to Figure 3, the upper eyebolt pivots at its junction, generally 50, with pin 40. The junction is not stationary but moves as the upper eyebolt and the remainder of the connecting rod pivot. During each revolution of the drive shaft, the junction is partly, if not entirely, offset from axis 26-26. The extent or distance of the offset in Figure 3 is indicated by arrows 52, 52. That distance will vary during each revolution of the drive shaft.
With reference again to Figure 1, the rocker is composed of a pair of support blocks 54 having bearings in which the ends of an axle 56 are mounted for rotation. The lower edge of a plate 58 is welded to the axle. The plate has a circular opening in which housing 46 is pressure fitted. An upper cylinder 62 is welded to the upper edge of the plate and the cylinder is received in a curved opening formed in the lower wall of block 66 attached to the bottom of a shaking tray 68.
Figures 2, 3 and 4 illustrate three positions of the connecting rod during one half rotation
A stem 32b extends upwardly from the circular portion of the lower eyebolt. A
threaded bore is formed in the stem for receipt of the threaded shaft 34a of the upper eyebolt. The circular upper end 34b of the upper eyebolt is connected by means of a pin 40 to an ear 42. The ear is bolted to an axle 44 which is free to rotate in bearings within the housing 46 of the rocker. A
boss or knob 48 is formed on the head of the pin to retain it in the eye of the eyebolt.
With reference to Figure 3, the upper eyebolt pivots at its junction, generally 50, with pin 40. The junction is not stationary but moves as the upper eyebolt and the remainder of the connecting rod pivot. During each revolution of the drive shaft, the junction is partly, if not entirely, offset from axis 26-26. The extent or distance of the offset in Figure 3 is indicated by arrows 52, 52. That distance will vary during each revolution of the drive shaft.
With reference again to Figure 1, the rocker is composed of a pair of support blocks 54 having bearings in which the ends of an axle 56 are mounted for rotation. The lower edge of a plate 58 is welded to the axle. The plate has a circular opening in which housing 46 is pressure fitted. An upper cylinder 62 is welded to the upper edge of the plate and the cylinder is received in a curved opening formed in the lower wall of block 66 attached to the bottom of a shaking tray 68.
Figures 2, 3 and 4 illustrate three positions of the connecting rod during one half rotation
3 of the drive shaft. In Figure 2, bolt 28 which interconnects the connecting rod and the drive shaft extends downward from the drive shaft and the bolt is furthest from the rocker. In this position, the ear 42 of the rocker is closest to collar 22. Cylinder 62 of the rocker is similarly closest to the collar and is at the furthest point to the right as it reciprocates back and forth on axle 56. The shaking tray has reached the end of its travel to the right.
In Figure 3, the drive shaft has rotated one quarter of a revolution from the position illustrated in Figure 2. Bolt 28 has advanced toward the rocker and has caused the connecting rod and the upper cylinder 62 of the rocker to move to the left thereby causing the shaking tray to move in the same direction.
In Figure 4, the drive shaft has rotated one further quarter of a revolution and bolt 28 has reached its closest point to the rocker. The shaking tray has now reached the end of its travel to the left.
As the connecting rod moves from the position illustrated in Figure 2 to that illustrated in Figure 3, it causes the cylinder of the rocker to move relatively rapidly to the left with like movement of the shaking tray. As the connecting rod continues to the position illustrated in Figure 4, the cylinder and the shaking tray decelerate and eventually stop moving altogether.
Figure 5 illustrates the lowermost and uppermost positions of the connecting rod. The lowermost position is shown in solid lines and corresponds to the position of the rod in Figure 2.
The uppermost position is shown in broken lines and corresponds to the position illustrated in
In Figure 3, the drive shaft has rotated one quarter of a revolution from the position illustrated in Figure 2. Bolt 28 has advanced toward the rocker and has caused the connecting rod and the upper cylinder 62 of the rocker to move to the left thereby causing the shaking tray to move in the same direction.
In Figure 4, the drive shaft has rotated one further quarter of a revolution and bolt 28 has reached its closest point to the rocker. The shaking tray has now reached the end of its travel to the left.
As the connecting rod moves from the position illustrated in Figure 2 to that illustrated in Figure 3, it causes the cylinder of the rocker to move relatively rapidly to the left with like movement of the shaking tray. As the connecting rod continues to the position illustrated in Figure 4, the cylinder and the shaking tray decelerate and eventually stop moving altogether.
Figure 5 illustrates the lowermost and uppermost positions of the connecting rod. The lowermost position is shown in solid lines and corresponds to the position of the rod in Figure 2.
The uppermost position is shown in broken lines and corresponds to the position illustrated in
4 Figure 4. The movement of plate 58 of the rocker from one position to the other is also illustrated. Figure 6 illustrates the positions of ear 42 of the rocker in the two positions.
In the graph in Figure 7, the curve represents of the speed of the connecting rod during a complete revolution of the drive shaft. The speed is measured at the junction of the connecting rod and pin 40. The X axis of the graph sets out the degrees of rotation from zero which is the position of the connecting rod in Figure 2.
The speed of the connecting rod is greatest as the drive shaft rotates from the zero-degree position. The speed decreases rapidly during the first quarter of rotation, decreases more slowly during the second quarter of rotation and stops altogether when the connecting rod has completed one half of its rotation. The connecting rod then reverses direction and its speed increases slowly during the third quarter of rotation and increases rapidly during the fourth quarter. When it reaches the end of a complete revolution, the connecting rod again reverses direction.
When the connecting rod is at the 180-degree position, the reverse in direction occurs relatively slowly and smoothly whereas at the 360-degree position, the reversal is extremely rapid and jerky..
A rapid change in direction will occur when the sliding tray reaches the end of each forward movement. The tray will reverse direction and return to its starting position while the inertia of the material on the tray will restrain the material from moving in like manner.
With reference to Figures 8 and 9, the driving apparatus is the same as that described with reference to the previous drawings. A sliding bar 80 is however substituted for the rocker of the previous drawings. The sliding bar has a forward end which is bifurcated into two branches 82,84. Each branch has a hollow passageway having a longitudinal axis which is aligned with the like axis of the other passageway. A bolt 86 can accordingly be passed through both passageways and through the opening in the upper eyebolt of connecting rod 88.
The sliding bar is mounted for sliding in a housing 90 and its rear end is connected to sliding tray 92 which runs on wheels or slides on a table (not illustrated).
As illustrated in Figure 9, the upper eyebolt pivots about its junction, generally 94 with bolt 86 and that junction, equivalent to junction 50 mentioned previously, is offset from the axis 96a-96a of drive shaft 96 by the distance marked 98 in the Figure. The driving apparatus accordingly causes the shaking tray to reciprocate in the same manner as in the previous drawings.
It will be understood, of course, that modifications can be made in the structure of the driving apparatus described above without departing from the scope and purview of the invention as defined in the appended claims. For example, the lower end of connecting rod 14 can be connected to collar 22 by means of a universal joint. Similarly, the upper end of the connecting rod can be connected to ear 42 by a universal joint. In addition a resilient rod can be substituted for connecting rod 14.
In the graph in Figure 7, the curve represents of the speed of the connecting rod during a complete revolution of the drive shaft. The speed is measured at the junction of the connecting rod and pin 40. The X axis of the graph sets out the degrees of rotation from zero which is the position of the connecting rod in Figure 2.
The speed of the connecting rod is greatest as the drive shaft rotates from the zero-degree position. The speed decreases rapidly during the first quarter of rotation, decreases more slowly during the second quarter of rotation and stops altogether when the connecting rod has completed one half of its rotation. The connecting rod then reverses direction and its speed increases slowly during the third quarter of rotation and increases rapidly during the fourth quarter. When it reaches the end of a complete revolution, the connecting rod again reverses direction.
When the connecting rod is at the 180-degree position, the reverse in direction occurs relatively slowly and smoothly whereas at the 360-degree position, the reversal is extremely rapid and jerky..
A rapid change in direction will occur when the sliding tray reaches the end of each forward movement. The tray will reverse direction and return to its starting position while the inertia of the material on the tray will restrain the material from moving in like manner.
With reference to Figures 8 and 9, the driving apparatus is the same as that described with reference to the previous drawings. A sliding bar 80 is however substituted for the rocker of the previous drawings. The sliding bar has a forward end which is bifurcated into two branches 82,84. Each branch has a hollow passageway having a longitudinal axis which is aligned with the like axis of the other passageway. A bolt 86 can accordingly be passed through both passageways and through the opening in the upper eyebolt of connecting rod 88.
The sliding bar is mounted for sliding in a housing 90 and its rear end is connected to sliding tray 92 which runs on wheels or slides on a table (not illustrated).
As illustrated in Figure 9, the upper eyebolt pivots about its junction, generally 94 with bolt 86 and that junction, equivalent to junction 50 mentioned previously, is offset from the axis 96a-96a of drive shaft 96 by the distance marked 98 in the Figure. The driving apparatus accordingly causes the shaking tray to reciprocate in the same manner as in the previous drawings.
It will be understood, of course, that modifications can be made in the structure of the driving apparatus described above without departing from the scope and purview of the invention as defined in the appended claims. For example, the lower end of connecting rod 14 can be connected to collar 22 by means of a universal joint. Similarly, the upper end of the connecting rod can be connected to ear 42 by a universal joint. In addition a resilient rod can be substituted for connecting rod 14.
Claims (4)
1. A driving apparatus for a shaking tray on which particulate material advances comprising:
a drive shaft rotating about an axis; a rocker for imparting reciprocating motion to said shaking tray; and a connecting rod being mounted to swivel relative to said drive shaft and caused to rotate thereby, said connecting rod further being mounted to pivot at a junction of said connecting rod and said rocker and to cause said rocker to reciprocate, said junction being offset from said axis.
a drive shaft rotating about an axis; a rocker for imparting reciprocating motion to said shaking tray; and a connecting rod being mounted to swivel relative to said drive shaft and caused to rotate thereby, said connecting rod further being mounted to pivot at a junction of said connecting rod and said rocker and to cause said rocker to reciprocate, said junction being offset from said axis.
2. A driving apparatus for a shaking tray on which particulate material advances comprising:
a drive shaft rotating about a first axis; a bar mounted to slide and causing said shaking tray to reciprocate; and a connecting rod being mounted to swivel relative to said drive shaft and caused to rotate thereby, said connecting rod further being mounted to pivot at a junction of said connecting rod and said bar and to cause said bar to reciprocate, said junction being offset from said axis.
a drive shaft rotating about a first axis; a bar mounted to slide and causing said shaking tray to reciprocate; and a connecting rod being mounted to swivel relative to said drive shaft and caused to rotate thereby, said connecting rod further being mounted to pivot at a junction of said connecting rod and said bar and to cause said bar to reciprocate, said junction being offset from said axis.
3. The driving apparatus of claims 1 or 2 further including a pin which extends outwardly from said drive shaft and rotates therewith, said connecting rod having a slot through which said pin extends and slides therein.
4. The driving apparatus of claim 3 further including means for preventing said pin from exiting from said slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2581899 CA2581899A1 (en) | 2007-03-08 | 2007-03-08 | Driving mechanism for shaking table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2581899 CA2581899A1 (en) | 2007-03-08 | 2007-03-08 | Driving mechanism for shaking table |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2581899A1 true CA2581899A1 (en) | 2008-09-08 |
Family
ID=39747223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2581899 Abandoned CA2581899A1 (en) | 2007-03-08 | 2007-03-08 | Driving mechanism for shaking table |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2581899A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110406911A (en) * | 2019-07-24 | 2019-11-05 | 安徽友邦矿业有限公司 | A kind of vibrofeeder |
-
2007
- 2007-03-08 CA CA 2581899 patent/CA2581899A1/en not_active Abandoned
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110406911A (en) * | 2019-07-24 | 2019-11-05 | 安徽友邦矿业有限公司 | A kind of vibrofeeder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |