CN219704822U - Positioning device - Google Patents

Abstract

The positioning device comprises a base, wherein a gear rack cavity is formed by downwards sinking the top surface of the base, the middle part of the gear rack cavity is provided with an air inflation cavity, the center of the air inflation cavity is vertically provided with a rotary shaft valve, the upper surface of the rotary shaft valve is provided with a sealing cover, the upper surface of the sealing cover is provided with a gear, the center of the gear is provided with a through hole, one side of the through hole is provided with a gear groove, a rack shaft is respectively arranged in meshing motion with the four sides of the gear, and the upper surface of the gear is provided with an upper cover. According to the utility model, the rack shaft is driven to reciprocate to enter and exit the base by respectively inflating the first small chamber and the second small chamber, so that the positioning block can perform opening and closing motions under the driving of the rack shaft connected with the positioning block, and the gear is driven to rotate without installing a power source such as an air cylinder or a motor, so that the whole volume of the positioning device is reduced, the production cost of the whole positioning device is reduced, the maintenance is simpler, the use is more convenient, and the automatic work is realized.

Description

Positioning device

Technical Field

The utility model relates to the field of machinery, in particular to a positioning device.

Background

The traditional workpiece positioning is generally performed by hands, and the hand positioning of the workpiece has the defects of poor positioning precision, low working efficiency, high labor intensity of workers, high labor cost of enterprises and the like. Later, in order to realize automated production, some positioning mechanisms or positioning devices appear on the market, and although the positioning mechanisms or positioning devices can automatically position the workpiece, the positioning mechanisms or positioning devices generally push each surface of the workpiece to limit and position through more than two air cylinders, and the positioning mechanisms or positioning devices with the structures have the problems of large volume, high production cost, difficult maintenance and the like, so that the positioning mechanisms or positioning devices are inconvenient to widely popularize and use.

Disclosure of Invention

The utility model aims to solve the technical problems of providing a positioning device, the whole structural design of which drives a rack shaft to reciprocate to enter and exit a base by adopting a mode of respectively inflating a first small cavity and a second small cavity, so that a positioning block can perform opening and closing motions under the driving of the rack shaft connected with the positioning block, the problems of large volume, high production cost and difficult maintenance caused by the fact that the positioning block is driven to rotate by a power source such as an air cylinder or a motor and the like without installing the power source to drive gears to reduce the whole volume of the positioning device and reduce the whole production cost of the positioning device, so that the positioning device is simpler to maintain and more convenient to use and can automatically work are effectively solved. The utility model is realized by the following technical scheme:

the positioning device comprises a base, wherein a gear rack cavity is formed in the top surface of the base in a downward sinking mode, an air inflation cavity is formed in the middle of the gear rack cavity, a rotary shaft valve is vertically arranged in the center of the air inflation cavity, a sealing cover is arranged on the rotary shaft valve, a gear is arranged on the sealing cover, a through hole is formed in the center of the gear, a gear groove is formed in one side of the through hole, a rack shaft is arranged in meshed movement with four sides of the gear respectively, an upper cover is arranged on the gear, and a positioning bearing is arranged in the center of the bottom surface of the upper cover; sealing rings are respectively arranged at the upper end and the lower end of the rotary shaft valve, and a shaft valve bearing is arranged at one side of each sealing ring; a positioning shaft is arranged in the through hole in the center of the gear, the upper end of the positioning shaft is arranged in the positioning bearing in the center of the bottom surface of the upper cover, and the lower end of the positioning shaft is connected and assembled with the bearing valve bearing at the upper end of the rotary shaft valve; a shaft valve protruding strip is arranged on one side of the outer circumference of the upper end of the rotary shaft valve. The rack and pinion cavity refers to a cavity for accommodating a rack and pinion shaft. Gear grooves are a functional description of the grooves.

By adopting the technical scheme, the upper end and the lower end of the rotary shaft valve are respectively provided with the shaft valve bearing and the sealing ring, the lower end of the rotary shaft valve is arranged in the inflation cavity of the base through the shaft valve bearing positioned at the lower end of the rotary shaft valve, the upper end of the rotary shaft valve is arranged at the center of the sealing cover through the shaft valve bearing positioned at the upper end of the rotary shaft valve, the sealing ring is designed to ensure the tightness of the base, the rotary shaft valve and the sealing cover, and the phenomenon of air leakage after the inflation cavity is inflated can be avoided. The gear is arranged on the rotary shaft valve and can not rotate relatively, so that the gear can be stably arranged in the gear rack cavity. The positioning bearing is arranged at the center of the bottom surface of the upper cover, one end of the positioning shaft is arranged in the through hole of the gear, and the other end of the positioning shaft is arranged in the positioning bearing at the center of the bottom surface of the upper cover, so that the positioning shaft can provide a shaft positioning function for rotation of the gear.

Preferably, the inflation cavity can be divided into two small cavities through the rotary shaft valve, each small cavity comprises a first small cavity and a second small cavity, a first air hole is formed in each first small cavity, a second air hole is formed in each second small cavity, and the first air holes and the second air holes are respectively connected with an air pipe.

When the technical scheme is adopted, when the first air hole is inflated to the first small cavity through the air pipe connected with the first air hole and the second small cavity is not inflated, air pressure generated by the inflation of the first small cavity can force the rotary shaft valve to turn to the second small cavity, the rotary shaft valve can drive the gear to rotate clockwise when turning to the second small cavity, and the gear can drive the rack shaft meshed with the gear to move in the direction outside the base when rotating clockwise, so that each positioning block can move in an opening mode along with the movement of the rack shaft connected with the positioning block; similarly, when the second air hole inflates to the second small chamber through the air pipe connected with the second air hole and the first small chamber does not inflate, air pressure generated by the inflation of the second small chamber can force the rotary shaft valve to reversely rotate to turn to the first small chamber, the rotary shaft valve can drive the gear to synchronously reversely rotate when reversely rotating, the reversely rotating gear can drive the rack shaft meshed with the gear to reversely move, and the reversely moving rack shaft can move in the direction in the base, so that each positioning block can move together along with the movement of the rack shaft connected with the positioning block. The device adopts the inflation mode of the inflation cavity to control the opening and closing of the positioning block, so that the device can drive the gear to rotate without installing a power source such as an air cylinder or a motor, the whole volume of the device is reduced, the whole production cost of the device is reduced, the device is simpler to maintain and more convenient to use, and the device can automatically work, and the device effectively solves the problems that the prior positioning mechanism or positioning device on the market has large volume, high production cost and difficult maintenance because the structure of the positioning mechanism or positioning device pushes the workpiece to limit and position through more than two air cylinders.

Preferably, a balance bar is arranged on one side of each rack shaft, and the balance bars on the same side are arranged in parallel with the rack shafts.

By adopting the technical scheme, the balance rod can play a role in balancing and orienting for the movement of the rack shaft, so that the movement of the rack shaft is more stable.

Preferably, the same end of the balance rod and the rack shaft which are arranged in parallel is provided with a rack fixing block, and one side of the rack fixing block is provided with a positioning block. The rack mount is a functional description of the mount.

By adopting the technical scheme, the positioning block is arranged on the outer side of the rack fixing block, and the positioning block can be provided with various jigs or clamps with different shapes according to production requirements, so that workpieces with shapes such as flaky rectangles, polygons, circles and semi-circles can be clamped and positioned, and the purpose of strong universality is achieved.

Preferably, the four sides of the base are respectively provided with oilless bearing holes, and the oilless bearing holes are provided with more than one oilless bearing, and each oilless bearing hole is internally provided with an oilless bearing. Oilless bearing holes refer to holes for mounting oilless bearings.

By adopting the technical scheme, the oil-free bearing holes are formed in each side of the base, the oil-free bearings are arranged in each oil-free bearing hole, and after one end of the toothed structure of the rack shaft on each side of the base is meshed with the gear, the other end of the rack shaft penetrates through the oil-free bearings and is connected and assembled with the rack fixing block.

Preferably, one side of the base is also provided with a joint, and the joint is provided with more than one.

Preferably, the heights of the holes of the oilless bearing holes positioned on the front side and the rear side of the base and the holes of the oilless bearing holes positioned on the left side and the right side of the base are staggered.

Preferably, the meshing heights of the two rack shafts on the left side and the right side are the same as those of the gears, and the meshing heights of the two rack shafts on the front side and the rear side are the same as those of the gears; and the meshing heights of the two rack shafts on the left side and the right side and the two rack shafts on the front side and the rear side with the gears are respectively staggered.

By adopting the technical scheme, the design of the positions of the two rack shafts on the left side and the right side and the two rack shafts on the front side and the rear side, which are respectively meshed with the gears, can ensure that each rack shaft is driven by the gears to stably move so as to ensure that the positioning device integrally clamps the workpiece with high accuracy and positioning accuracy.

In another embodiment, the utility model can also be used by arranging a motor seat below the base, arranging a motor below the motor seat, connecting and assembling the lower end of the rotary shaft valve with the motor, arranging a coupler, controlling and connecting the coupler with the motor, wherein the controller is a programmable controller which can be a programmable controller with the model of FX3U-16MR, but the utility model is not limited to the programmable controller; the above-mentioned structural design makes it through the angle that the motor can drive gear pivoted to realize can controlling the stroke of work piece centre gripping, thereby satisfy multipurpose use's demand. The motor cabinet is the mount pad or fixing base that are used for installing the motor.

Compared with the prior art, the utility model has the beneficial effects that: 1. the whole structural design of the positioning device drives the rack shaft to reciprocate to enter and exit the base in a mode of respectively inflating the first small cavity and the second small cavity, so that the positioning block can perform opening and closing motions under the driving of the rack shaft connected with the positioning block, the gear is driven to rotate without installing a cylinder or a motor and other power sources, the whole size of the positioning device is reduced, the whole production cost of the positioning device is reduced, the maintenance is simpler, the use is more convenient, the automation work is realized, and the problems that the positioning mechanism or the positioning device on the market at present is limited and positioned by pushing workpieces through more than two cylinders are effectively solved.

2. The fixture or the clamp with various shapes can be arranged on the positioning block according to the production requirement, and after the workpiece is placed on the upper cover, the fixture or the clamp can clamp and position the workpiece with the shape of a sheet rectangle, a polygon, a circle, a semicircle and the like, so that the purpose of strong universality is realized.

Drawings

For ease of illustration, the utility model is described in detail by the following preferred embodiments and the accompanying drawings.

Fig. 1 is an exploded perspective view of a positioning device of the present utility model.

Fig. 2 is an exploded perspective view of the assembly of the rotary shaft valve with the seal ring, the shaft valve bearing, the positioning bearing and the positioning shaft in the positioning device of the present utility model.

Fig. 3 is a schematic perspective view of the rotary shaft valve in the positioning device of the present utility model when rotated.

Fig. 4 is an assembled perspective view of a gear, a rack shaft, a positioning bearing, a positioning shaft and a rotary shaft valve in the positioning device of the present utility model.

Fig. 5 is an exploded perspective view of another embodiment of the positioning device of the present utility model employing a motor to drive the opening and closing thereof.

Fig. 6 is a top view of the positioning device of the present utility model with the upper cover removed and the positioning block in an open position.

Fig. 7 is a top view of the positioning device of the present utility model with the upper cover removed and the positioning block in a closed position.

Fig. 8 is a perspective view of a gear in the positioning device of the present utility model.

Description of the embodiments

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the utility model. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

In this embodiment, referring to fig. 1 to 8, the positioning device of the present utility model includes a base 1, a rack and pinion cavity 2 is provided on the top surface of the base 1 in a downward concave manner, an inflation cavity 3 is provided in the middle of the rack and pinion cavity 2, a rotary shaft valve 4 is vertically installed in the center of the inflation cavity 3, a sealing cover 5 is provided on the rotary shaft valve 4, a gear 6 is provided on the sealing cover 5, a through hole 7 is provided in the center of the gear 6, a gear groove 8 is provided on one side of the through hole 7, rack shafts 9 are provided on the gear 6 in a manner of meshing with four sides of the gear 6 respectively, an upper cover 10 is provided on the upper surface of the gear 6, and a positioning bearing 11 is provided in the center of the bottom surface of the upper cover 10; the upper end and the lower end of the rotary shaft valve 4 are respectively provided with a sealing ring 12, and one side of each sealing ring 12 is provided with a bearing valve bearing 13; a positioning shaft 14 is arranged in the through hole 7 in the center of the gear 6, the upper end of the positioning shaft 14 is arranged in the positioning bearing 11 in the center of the bottom surface of the upper cover 10, and the lower end of the positioning shaft 14 is connected and assembled with the bearing shaft bearing 13 at the upper end of the rotary shaft valve 4; the rotary shaft valve 4 is provided with a shaft valve protrusion 15 on one side of the outer circumference of the upper end.

In one embodiment, the air-filling cavity 3 can be divided into two small cavities by the rotary shaft valve 4, the two small cavities comprise a first small cavity and a second small cavity, the first small cavity is provided with a first air hole 31, and the second small cavity is provided with a second air hole 32.

In one embodiment, a balance bar 16 is disposed on one side of each rack shaft 9, and each balance bar 16 on the same side of the base 1 is disposed parallel to each rack shaft 9.

In one embodiment, the same end of the balance bar 16 and the rack shaft 9 which are arranged in parallel is provided with a rack fixing block 17, and one side of the rack fixing block 17 is provided with a positioning block 18.

In one embodiment, the four sides of the base 1 are respectively provided with oilless bearing holes 19, and the oilless bearing holes 19 are provided with more than one oilless bearing 20, and each oilless bearing hole 19 is internally provided with an oilless bearing.

In one embodiment, the oilless bearing holes 19 on the front and rear sides of the base 1 are staggered from the oilless bearing holes 19 on the left and right sides of the base 1.

In one embodiment, one side of the base 1 is further provided with a joint 21, and the joint 21 is provided with more than one.

In one embodiment, the meshing heights of the two rack shafts 9 on the left and right sides and the gear 6 are the same, and the meshing heights of the two rack shafts 9 on the front and rear sides and the gear 6 are the same; the meshing heights of the two rack shafts 9 on the left side and the right side and the two rack shafts 9 on the front side and the rear side with the gear 6 are staggered.

In another embodiment, a motor seat 22 is arranged below the base 1, a motor 23 is arranged below the motor seat 22, and a coupling 24 is arranged at the lower end of the rotary shaft valve 4 and connected with the motor 23, so that the motor 23 can replace an inflation mode to control the opening and closing of each positioning block 18, the workpiece clamping device not only avoids the problem that the existing positioning mechanism or positioning device can clamp the workpiece by using at least two cylinders, but also can control the stroke of workpiece clamping, and further has the advantages of wider application and better applicability.

In one embodiment, the positioning device has the following structural design principle: the bearing valve bearings 13 and the sealing rings 12 are respectively arranged at the upper end and the lower end of the rotary shaft valve 4, the lower end of the rotary shaft valve 4 is arranged in the inflation cavity 3 of the base 1 through the bearing valve bearings 13 positioned at the lower end of the rotary shaft valve, the upper end of the rotary shaft valve 4 is arranged at the center of the sealing cover 5 through the bearing valve bearings 13 positioned at the upper end of the rotary shaft valve, the sealing rings 12 are designed to ensure the tightness of the assembly of the base 1, the rotary shaft valve 4 and the sealing cover 5, and the phenomenon of air leakage after the inflation cavity 3 is inflated can be avoided. The gear 6 is arranged on the rotary shaft valve 4 without relative rotation by arranging the shaft valve protruding strip 15 on one side of the outer circumference of the upper end of the rotary shaft valve 4 and arranging the through hole 7 in the center of the gear 6 and arranging the gear groove 8 in the through hole 7, wherein the gear groove 8 is used for being matched with the shaft valve protruding strip 15, so that the gear 6 can be stably arranged in the gear rack cavity 2. The positioning bearing 11 is arranged at the center of the bottom surface of the upper cover 10, one end of the positioning shaft 14 is arranged in the through hole 7 of the gear 6, and the other end of the positioning shaft 14 is arranged in the positioning bearing 11 at the center of the bottom surface of the upper cover 10, so that the positioning shaft can provide a shaft positioning function for the rotation of the gear 6. The oil-free bearing holes 19 are formed in each side of the base 1, meanwhile, the heights of the oil-free bearing holes 19 on the front side and the rear side of the base 1 and the open holes of the oil-free bearing holes 19 on the left side and the right side of the base 1 are set to be staggered, the oil-free bearings 20 are arranged in each oil-free bearing hole 19, after one end of the rack shaft 9 with a toothed structure on each side of the base 1 is meshed with the gear 6, the other end of the rack shaft 9 penetrates through the oil-free bearings 20 to be connected and assembled with the rack fixing block 17, a balance rod 16 which is in balance distribution with the rack shaft 9 in the same side of the base 1 penetrates through the other oil-free bearing 20 to be also arranged on the rack fixing block 17 arranged on the same side of the base 1, and the combined design of the balance rod 16 and the rack shaft 9 can play a role of balance and stability, so that the rack shaft 9 can move in a balance orientation when entering and exiting the base 1. The positioning block 18 is arranged on the outer side of the rack fixing block 17, and the positioning block 18 can be provided with various jigs or clamps with different shapes according to production requirements, so that workpieces with sheet-shaped rectangles, polygons, circles, semi-circles and the like can be clamped and positioned, and the purpose of strong universality is achieved. The two rack shafts 9 which are opposite to each other from left to right and the two rack shafts 9 which are opposite to each other from front to back are respectively meshed and assembled with the gear 6 in a horizontal dislocation mode, so that the two opposite rack shafts 9 can be positioned at the same horizontal height, the two rack shafts 9 on two adjacent sides of the base 1 can be positioned at different horizontal heights (namely, the horizontal heights of the two opposite rack shafts 9 are the same, and the horizontal heights of the two adjacent rack shafts 9 are misplaced), and the structural design can ensure that the gear 6 drives the rack shafts 9 to move stably. The inflatable cavity 3 can be divided into two small cavities through the rotary shaft valve 4, the two small cavities are a first small cavity and a second small cavity, a first air hole 31 is arranged in the first small cavity, a second air hole 32 is arranged in the second small cavity, the first air hole 31 and the second air hole 32 are respectively externally connected with an air pipe, when the first air hole 31 is inflated to the first small cavity through the air pipe connected with the first air hole and the second small cavity is not inflated, the rotary shaft valve 4 is forced to turn to the second small cavity by air pressure generated by the inflation of the first small cavity, the gear 6 can be driven to rotate clockwise when the rotary shaft valve 4 is rotated to the second small cavity, and the rack shaft 9 which is meshed with the gear 6 can be driven to move in the direction outside the base 1 when the gear 6 rotates clockwise, so that each positioning block 18 can move to open along with the movement of the rack shaft 9 connected with the positioning block; similarly, when the second air hole 32 is inflated to the second small chamber through the air pipe connected with the second air hole and the first small chamber is not inflated, air pressure generated by inflation of the second small chamber can force the rotary shaft valve 4 to reversely rotate to turn to the first small chamber, the rotary shaft valve 4 can drive the gear 6 to synchronously reversely rotate when reversely rotating, the reversely rotating gear 6 can drive the rack shaft 9 meshed with the gear 6 to reversely move, the reversely moving rack shaft 9 can move towards the direction in the base 1, so that each positioning block 18 can move together along with the movement of the rack shaft 9 connected with the positioning block, namely, the positioning block 18 connected with the positioning block can be driven to open or close when each rack shaft 9 moves back and forth to enter and leave the base 1; when the gear 6 drives the four rack shafts 9 to rotate forward, the positioning blocks 18 can be driven to open, when the gear 6 drives the four rack shafts 9 to rotate reversely, the positioning blocks 18 can be driven to close, and finally the four positioning blocks 18 can be opened and closed automatically. The opening and closing of the positioning block 18 are controlled by adopting a mode of inflating the inflatable cavity 3, so that the gear 6 can be driven to rotate without installing a cylinder or a motor 23 and other power sources, the whole volume of the positioning device can be reduced, the whole production cost of the positioning device is reduced, the maintenance is simpler and the use is more convenient, the automatic work can be realized, and the problems that the positioning mechanism or the positioning device on the market at present is limited and positioned by pushing workpieces through more than two cylinders are effectively solved, and the positioning mechanism or the positioning device has large volume, high production cost and difficult maintenance.

The above embodiment is only an example of the present utility model and is not intended to limit the scope of the present utility model, and all technical solutions identical or equivalent to those described in the claims should be included in the scope of the present utility model.

Claims (9)

1. Positioning device, its characterized in that: the device comprises a base, wherein a gear rack cavity is arranged on the top surface of the base in a downward sinking manner, an air inflation cavity is arranged in the middle of the gear rack cavity, a rotary shaft valve is vertically arranged in the center of the air inflation cavity, a sealing cover is arranged on the rotary shaft valve, a gear is arranged on the sealing cover, a through hole is formed in the center of the gear, a gear groove is formed in one side of the through hole, a rack shaft is arranged in meshed movement with four sides of the gear respectively, an upper cover is arranged on the gear, and a positioning bearing is arranged in the center of the bottom surface of the upper cover; sealing rings are respectively arranged at the upper end and the lower end of the rotary shaft valve, and a shaft valve bearing is arranged at one side of each sealing ring; a positioning shaft is arranged in the through hole in the center of the gear, the upper end of the positioning shaft is arranged in the positioning bearing in the center of the bottom surface of the upper cover, and the lower end of the positioning shaft is connected and assembled with the bearing valve bearing at the upper end of the rotary shaft valve; a shaft valve protruding strip is arranged on one side of the outer circumference of the upper end of the rotary shaft valve.

2. The positioning device of claim 1, wherein: the air inflation cavity can be divided into two small cavities through the rotary shaft valve, each small cavity comprises a first small cavity and a second small cavity, a first air hole is formed in the first small cavity, and a second air hole is formed in the second small cavity.

3. The positioning device of claim 1, wherein: one side of each rack shaft is provided with a balance rod, and the balance rods on the same side are arranged in parallel with the rack shafts.

4. A positioning device as recited in claim 3, wherein: the balance rod and the same end of the rack shaft which are arranged in parallel are provided with rack fixing blocks, and one side of each rack fixing block is provided with a positioning block.

5. The positioning device of claim 1, wherein: the four sides of the base are respectively provided with oilless bearing holes, the oilless bearing holes are provided with more than one oilless bearing, and each oilless bearing hole is internally provided with an oilless bearing.

6. The positioning device of claim 5, wherein: the heights of the oilless bearing holes positioned on the front side and the rear side of the base and the open holes of the oilless bearing holes positioned on the left side and the right side of the base are staggered.

7. The positioning device of claim 1, wherein: one side of the base is also provided with a connector, and the connector is provided with more than one.

8. The positioning device of claim 1, wherein: the meshing heights of the two rack shafts on the left side and the right side are the same as those of the gears, and the meshing heights of the two rack shafts on the front side and the rear side are the same as those of the gears; and the meshing heights of the two rack shafts on the left side and the right side and the two rack shafts on the front side and the rear side with the gears are respectively staggered.

9. The positioning device of claim 1, wherein: the motor seat is arranged below the base, the motor is arranged below the motor seat, and the lower end of the rotary shaft valve is connected with the motor to be assembled and provided with a coupler.