CN206542700U - It is a kind of to position the compact hoistable platform of reliable structure - Google Patents
It is a kind of to position the compact hoistable platform of reliable structure Download PDFInfo
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- CN206542700U CN206542700U CN201720076799.1U CN201720076799U CN206542700U CN 206542700 U CN206542700 U CN 206542700U CN 201720076799 U CN201720076799 U CN 201720076799U CN 206542700 U CN206542700 U CN 206542700U
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- screw
- compact
- hoistable platform
- reliable structure
- tensioning
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Abstract
The compact hoistable platform of reliable structure, including servomotor and lifting unit are positioned the utility model discloses a kind of, described lifting unit includes being provided with encoder on several elevating mechanisms, described servomotor.Described elevating mechanism, which includes being provided between leading screw and the screw being engaged with the leading screw, and described screw and lifting support in lifting support, described lifting support, is provided with bearing.The upper end of the screw is provided with driven pulley, and described driven pulley is connected by timing belt with the driving pulley being arranged on the servo motor output shaft.The upper end of the leading screw is fixedly installed platform.The lateral surface of the screw is the T-shaped rotary structure in section, and the upper surface of the bearing inner race is resisted against on the second step face of the screw, and the lower end of the screw is provided with locking nut.The hoistable platform is moved up and down by leading screw and screw band moving platform, not only compact conformation, and can effectively ensure that reliability.
Description
Technical field
The utility model is related to electronic component surface mounting technology field, specifically a kind of to be applied to Full Vision
The compact platform lifting device of the positioning reliable structure of equipment.
Background technology
In Full Vision equipment, hoistable platform mainly plays a part of to support and positioned.Due to the component of electronic product
Compare accurate, and from size for it is general smaller, therefore very high is required to the lifting position of hoistable platform during work,
This is accomplished by platform lifting device can reliably support and accurately position in a device.
Hoistable platform in existing Full Vision equipment all realized by cylinder drivening rod mechanism, this structure
Although the positioning and support for requiring position, the problem of there are following several respects can be realized：
First, complicated, volume is big；During due to cylinder drivening rod mechanism, cylinder does not remember long function, therefore
Must be provided with it is hard spacing, by collision it is hard it is spacing realize positioning and support, so can undoubtedly make lifting structure very complicated, and
Volume is big, and the requirement to installing space is also higher.
Second, need to support the thickness of the pcb board of positioning has in polytype, the hoistable platform position fixing process of cylinder control,
Due to the uncontrollable any pinpoint distance of cylinder, it can only lead to not flexibly adjust platform positioning by hard spacing
Position, needs to adjust the position location that hard restraining position carrys out control platform, cumbersome complexity every time.
3rd, due to the quick positioning of lowering or hoisting gear requirement, the platform of cylinder control can cause fortune in quick motion process
Row is unstable, causes platform to have certain impulsive force when reaching position location, therefore the platform mechanism speed of cylinder control is unsuitable
It is too fast, reduce operating efficiency.
4th, poor reliability；The main function of hoistable platform is the lifting by hoistable platform in mounting device, will be treated
The pcb board of attachment is clamped between the fixed plate above hoistable platform and hoistable platform, clamping force can not it is excessive can not be too small.
Traditional cylinder drivening rod mechanism be by collision it is hard it is spacing ensure suitable clamping force, so spacing position is just firmly
It is particularly important, but in the actual course of work, multiple collision, the unavoidable hard spacing movement that can occur position, thus
It is difficult to ensure that suitable clamping force, so as to cause the damage of pcb board.
Utility model content
In view of the above-mentioned problems, the utility model provides a kind of compact hoistable platform of positioning reliable structure, the lifting is put down
Platform is moved up and down by leading screw and screw band moving platform, not only compact conformation, and can effectively ensure that reliability.
The technical scheme in the invention for solving the technical problem is：
It is a kind of to position the compact hoistable platform of reliable structure, including servomotor and lifting unit, described lifting unit
Including several elevating mechanisms, encoder is provided with described servomotor；
Described elevating mechanism includes being provided with leading screw in lifting support, described lifting support and matched with the leading screw
Bearing is provided between the screw of conjunction, and described screw and lifting support；
The upper end of the screw is provided with driven pulley, and described driven pulley is by timing belt and is arranged at the servo
Driving pulley on motor output shaft is connected；
The upper end of the leading screw is fixedly installed platform.
Further, the lateral surface of the screw is the T-shaped rotary structure in section, the upper surface of the bearing inner race
It is resisted against on the second step face of the screw, the lower end of the screw is provided with locking nut.
Further, it is provided with holding screw between described locking nut and screw.
Further, the quantity of the elevating mechanism is at least three, and multiple described elevating mechanisms constitute just polygon
Shape, and described regular polygon is symmetrical on the plane of symmetry.
Further, stretching unit, described stretching unit bag are provided between described servomotor and lifting unit
Include to be fixedly installed on tensioning support, described tensioning support on tensioning shaft, described tensioning shaft and be provided with tensioning wheel.
Further, the quantity of the tensioning shaft and tensioning wheel is two, and the tensioning wheel described in two is on symmetrical
Face is symmetrical.
Further, the hole that is connected with equipment body of being used on the tensioning support is slotted hole, and described oval
Hole is parallel with the described plane of symmetry.
Further, the lateral surface of the screw is the T-shaped rotary structure in section, the upper surface of the bearing inner race
It is resisted against on the second step face of the screw, is connected between described bearing inner race and described screw by key.According to right
It is required that a kind of compact hoistable platform of positioning reliable structure described in 1, it is characterised in that：
Further, the upper end of the lifting support is provided with the cover plate for limiting bearing axial freedom.
The beneficial effects of the utility model are：
1st, lifting platform is driven by leading screw, screw, not only ensure that reliability of operation and stability, and structure is tight
Gather, reduce the volume of whole device.
2nd, due to hard spacing, position location is controlled by the encoder on servomotor, it is not necessary to according to PCB
The thickness of plate is frequently adjusted, easy to operate.
3rd, because servomotor can preset a compensation rate according to the speed of operation, to compensate the inertia in running
Impact, therefore the speed operation that the hoistable platform can be higher, improve operating efficiency.
Brief description of the drawings
Fig. 1 is dimensional structure diagram of the present utility model；
Fig. 2 is the mplifying structure schematic diagram of part A in Fig. 1；
Fig. 3 is to remove top view of the present utility model after platform；
Fig. 4 is front view of the present utility model；
Fig. 5 is the mplifying structure schematic diagram of part B in Fig. 4.
In figure：1- elevating mechanisms, 11- lifting supports, 12- leading screws, 13- screws, 14- bearings, 15- driven pulleys, 16- locks
Tight nut, 17- holding screws, 18- cover plates, 2- servomotors, 21- driving pulleys, 3- timing belts, 4- stretching units, 41- tensionings
Support, 42- tensioning shafts, 43- tensioning wheels, 5- platforms.
Embodiment
Embodiment one
As shown in figures 1 and 3, a kind of compact hoistable platform 5 of reliable structure that positions includes servomotor 2 and lifting list
Platform 5 is provided with above member, the lifting unit.Described lifting unit includes several elevating mechanisms 1.Described servo
Encoder is provided with motor 2.
Describe for convenience, the geometric figure now constituted with the axis of servomotor 2 and several elevating mechanisms 1 it is several
What plane determined by center is the plane of symmetry.
As shown in Figure 4 and Figure 5, described elevating mechanism 1 includes being provided with lifting support 11, described lifting support 11
Stepped hole vertically.The inside for being located at stepped hole on leading screw 12, described leading screw 12 is provided with described stepped hole
It is provided with the screw 13 being engaged with described leading screw 12.Bearing 14 is provided between described screw 13 and lifting support 11,
The lower surface of the outer ring of bearing 14 is resisted against on the First terrace of the stepped hole, and the outer ring of the bearing 14 with it is described
Stepped hole between for interference fit, the inner ring of the bearing 14 is fixedly connected with described screw 13.Axle described herein
Connected mode between 14 inner rings and the screw 13 is held by a variety of, it is described in the present embodiment as a kind of embodiment
The lateral surface of screw 13 is the T-shaped rotary structure in section, and the upper surface of the inner ring of bearing 14 is resisted against the screw 13
Second step face on, the lower end of the screw 13, the i.e. less one end of diameter are provided with locking nut 16, the screw 13
Lower end is provided with the external screw thread being engaged with described locking nut 16.The inner ring of the bearing 14 is clamped at described second
Between step surface and the upper surface of locking nut 16.
Further, in order to prevent locking nut 16 from loosening, as shown in figure 5, described locking nut 16 and screw 13 it
Between be provided with holding screw 17.
As shown in figure 5, the upper end of the screw 13, that is, one end being relatively large in diameter is fixedly installed driven pulley 15, as
A kind of embodiment, the driven pulley 15 described in the present embodiment is fixedly connected by screw with described screw 13.Institute
The driven pulley 15 stated is connected by timing belt 3 with the driving pulley 21 being arranged on the output shaft of servomotor 2.The silk
The upper end of thick stick 12 is fixedly connected with described platform 5.
Further, as shown in figure 5, the upper end of the lifting support 11 is provided with for limiting the axial freedom of bearing 14
Cover plate 18, and the cover plate 18 internal diameter be less than the inner ring of bearing 14 external diameter be more than the outer ring of bearing 14 external diameter.
Further, in order to ensure each driven pulley 15 have suitable cornerite, it is to avoid the driven pulley 15 having
The cornerite of timing belt 3 is too small, influences the efficiency of transmission, and the quantity of the elevating mechanism 1 is at least three, and multiple described liftings
Mechanism 1 constitutes regular polygon.The regular polygon that multiple described elevating mechanisms 1 are constituted is symmetrical on the described plane of symmetry.
It is preferred that, the quantity of described elevating mechanism 1 is three or four.As a kind of embodiment, described in the present embodiment
The quantity of elevating mechanism 1 is three, and the elevating mechanism 1 described in three is laid out in equilateral triangle.
Further, in order that timing belt 3 keeps suitable rate of tension, as shown in figure 4, described servomotor 2 and liter
Stretching unit 4 is provided between drop unit.Described stretching unit 4 includes solid on tensioning support 41, described tensioning support 41
Surely it is provided with tensioning shaft 42, described tensioning shaft 42 and tensioning wheel 43, and described is rotatably connected to by the component of bearing 14
Bearing up pulley 43 is located at the outside of the timing belt 3, and from the timing belt 3 described in outer side compression.
Further, in order to ensure each driven pulley 15 have suitable cornerite, it is to avoid the driven pulley 15 having
The cornerite of timing belt 3 is too small, the efficiency of transmission is influenceed, as shown in figure 3, the quantity of the tensioning shaft 42 and tensioning wheel 43 is two
It is individual, and the tensioning wheel 43 described in two is symmetrical on the described plane of symmetry.
Further, because timing belt 3 can become loose during work, adjust for convenience, as shown in Fig. 2
The hole that is connected with equipment body of being used on the tensioning support 41 is slotted hole, and described slotted hole and the described plane of symmetry
It is parallel.So, when adjusting the rate of tension of timing belt 3, adjusted along the direction of arrow in Fig. 3.
Embodiment two
Described elevating mechanism 1 does not include locking nut 16 and holding screw 17, the inner ring and screw 13 of the bearing 14
Between be provided with key, connected between the described inner ring of bearing 14 and described screw 13 by key.Remaining structure be the same as Example one.
The main cause so designed is, in the lowering or hoisting gear, the platform 5, leading screw 12, screw 13 and driven pulley 15
Gravity be applied on the inner ring of the bearing 14, even if screw 13 described during work and the inner ring of bearing 14 it
Between there is no axially position, upward play will not also occur for screw 13, can not between screw 13 and the inner ring of bearing 14 as long as ensureing
Relative rotation.
Claims (9)
1. a kind of position the compact hoistable platform of reliable structure, it is characterised in that：It is described including servomotor and lifting unit
Lifting unit includes being provided with encoder on several elevating mechanisms, described servomotor；
Described elevating mechanism includes what is be provided with leading screw in lifting support, described lifting support and be engaged with the leading screw
Bearing is provided between screw, and described screw and lifting support；
The upper end of the screw is provided with driven pulley, and described driven pulley is by timing belt and is arranged at the servomotor
Driving pulley on output shaft is connected；
The upper end of the leading screw is fixedly installed platform.
2. a kind of compact hoistable platform of positioning reliable structure according to claim 1, it is characterised in that：The screw
Lateral surface is the T-shaped rotary structure in section, and the upper surface of the bearing inner race is resisted against the second step face of the screw
On, the lower end of the screw is provided with locking nut.
3. a kind of compact hoistable platform of positioning reliable structure according to claim 2, it is characterised in that：Described locking
Holding screw is provided between nut and screw.
4. a kind of compact hoistable platform of positioning reliable structure according to claim 1, it is characterised in that：The lift
The quantity of structure is at least three, and multiple described elevating mechanisms constitute regular polygon, and described regular polygon is on symmetrical
Face is symmetrical.
5. a kind of compact hoistable platform of positioning reliable structure according to claim 1, it is characterised in that：Described servo
Stretching unit is provided between motor and lifting unit, described stretching unit is included on tensioning support, described tensioning support
It is fixedly installed on tensioning shaft, described tensioning shaft and is provided with tensioning wheel.
6. a kind of compact hoistable platform of positioning reliable structure according to claim 5, it is characterised in that：The tensioning shaft
Quantity with tensioning wheel is two, and the tensioning wheel described in two is symmetrical on the plane of symmetry.
7. a kind of compact hoistable platform of positioning reliable structure according to claim 6, it is characterised in that：The tensioning branch
On frame is slotted hole for the hole that is connected with equipment body, and described slotted hole is parallel with the described plane of symmetry.
8. a kind of compact hoistable platform of positioning reliable structure according to claim 1, it is characterised in that：The screw
Lateral surface is the T-shaped rotary structure in section, and the upper surface of the bearing inner race is resisted against the second step face of the screw
On, connected between described bearing inner race and described screw by key.
9. a kind of compact hoistable platform of positioning reliable structure according to claim 1, it is characterised in that：The lifting branch
The upper end of frame is provided with the cover plate for limiting bearing axial freedom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720076799.1U CN206542700U (en) | 2017-01-20 | 2017-01-20 | It is a kind of to position the compact hoistable platform of reliable structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720076799.1U CN206542700U (en) | 2017-01-20 | 2017-01-20 | It is a kind of to position the compact hoistable platform of reliable structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206542700U true CN206542700U (en) | 2017-10-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720076799.1U Active CN206542700U (en) | 2017-01-20 | 2017-01-20 | It is a kind of to position the compact hoistable platform of reliable structure |
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| CN (1) | CN206542700U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106793748A (en) * | 2017-01-20 | 2017-05-31 | 山东日发纺织机械有限公司 | It is a kind of to position the compact hoistable platform of reliable structure |
-
2017
- 2017-01-20 CN CN201720076799.1U patent/CN206542700U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106793748A (en) * | 2017-01-20 | 2017-05-31 | 山东日发纺织机械有限公司 | It is a kind of to position the compact hoistable platform of reliable structure |
| CN106793748B (en) * | 2017-01-20 | 2022-08-05 | 山东日发纺织机械有限公司 | Lifting platform reliable in positioning and compact in structure |
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