CN102976069A - Roller conveying parts positioning device - Google Patents

Abstract

Part positioner is carried to roll table, characterized by: the travel switch is arranged on the roller way and used for controlling the drive motor of the roller way to stop in a time-delay manner; the first part positioning system comprises a first push block, a first longitudinal positioning piece and a first push block driving device, wherein the first push block, the first longitudinal positioning piece and the first push block driving device are arranged above the roller way; the second part positioning system comprises a second push block above the roller way, a driving device of the second push block, a second longitudinal positioning piece and a second longitudinal positioning piece driving device, wherein the second longitudinal positioning piece and the second longitudinal positioning piece driving device are arranged between two adjacent rollers and can be lifted above the roller way; the fixed transverse positioning plate is arranged opposite to the working surfaces of the first pushing block and the second pushing block; in the conveying direction of the roller way, the first part positioning system, the second part positioning system and the travel switch are arranged in the sequence from front to back. The automatic part grabbing device can grab two parts at a time, and is accurate and reliable in positioning in the width direction and the length direction of the parts, and high in production efficiency.

Description

Roller conveying parts positioning device

technical field

The invention relates to a positioning device for roller conveying, in particular to a positioning device for roller conveying parts.

Background technique

At present, most of the roller conveyor positioning of parts uses travel switches, infrared rays, and machine vision to determine the stroke position. There is no positioning in the width direction of the parts. Especially the cylinder parts have complex structures and accurate positioning requirements. Robots are often used to grab parts. Sometimes Also grab two at a time, adopt the above method and just be difficult to finish the task.

Contents of the invention

In order to overcome the above-mentioned shortcomings in the prior art, the purpose of the present invention is to provide a positioning device for parts conveyed by rollers, which can grab two parts at a time, and the positioning in the width and length directions of the parts is accurate and reliable, and the production efficiency is high.

In order to solve the above problems, the present invention adopts the following technical solutions: a positioning device for parts conveyed by a roller table, the roller table includes a plurality of rollers and a roller driving system; the roller driving system includes a motor; it is characterized in that the positioning device includes:

The limit switch is arranged on the roller table, and generates a position signal when the part passes, and transmits it to the control device, and the control device controls the motor to stop with a delay according to the position signal;

The first part positioning system includes a first push block that is located above the roller table and can be translated and fixed along the axial direction of the roller, and also includes a first push block driving device for driving and fixing the first push block; the first One end surface of the push block is a working surface in contact with the first part; it also includes a first longitudinal positioning member arranged above the roller table, and the first longitudinal positioning member is positioned at the first pusher in the conveying direction of the roller table. the front of the block;

The second part positioning system includes a second push block that is located above the roller table and can be translated and fixed along the axial direction of the roller, and also includes a second push block driving device for driving and fixing the second push block; the second One end surface of the push block is a working surface in contact with the second part; it also includes a second longitudinal positioning member arranged between two adjacent rollers and can be raised above the roller table, and a second vertical positioning member that drives the second longitudinal positioning member to go up and down Longitudinal positioning member driving device, the second longitudinal positioning member is located in front of the second push block and behind the first push block in the conveying direction of the roller table;

Opposite to the working surface of the first pushing block and the working surface of the second pushing block, a lateral positioning plate is fixed on the other side of the roller table;

In the conveying direction of the roller table, the first part positioning system, the second part positioning system and the travel switch are arranged in sequence from front to back.

Preferably: the first push block driving device includes a first cylinder; the first cylinder is fixed on the first cylinder fixture, the first cylinder fixture is fixed on the frame, and the piston rod of the first cylinder is connected to the first cylinder The rollers are parallel and connected to the first push block.

Preferably: the second push block driving device includes a second cylinder and a second cylinder fixture; the second cylinder is fixed on the second cylinder fixture, the second cylinder fixture is fixed on the frame, and the second cylinder The piston rod is parallel to the roller and connected to the second push block.

Preferably: the driving device of the second longitudinal positioning member includes a third cylinder, the third cylinder is fixed on the frame, and the piston rod of the third cylinder is connected to the second longitudinal positioning member 14 .

Further: a front and rear position adjustment mechanism is provided corresponding to the second longitudinal positioning member.

The invention has the beneficial effects that it can grab two parts at a time, and the stop distance between the two parts can be adjusted, the positioning in the width and length directions of the parts is accurate and reliable, and the production efficiency is high.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

Fig. 1 is the front view of the embodiment of the present invention;

Fig. 2 is the top view of Fig. 1;

In the figure: 1. Motor; 2. Reducer; 3. First chain drive; 4. Second chain drive; 5. Travel switch; 6. Roller; 7. Bearing seat; 8. Rack; 9. Lateral positioning plate 10, the second part; 11, the second push block; 12, the second cylinder fixture; 13, the second cylinder; 14, the second longitudinal positioning member; 15, the third cylinder; 16, the first cylinder; 17 1. The first cylinder fixing part; 18. The first push block; 19. The first part; 20. The first longitudinal positioning part; 21. The first longitudinal positioning part bracket.

Detailed ways

As shown in accompanying drawings 1 and 2, the roller table for conveying parts includes a plurality of rollers 6 and a roller drive system; The roller drive system includes a motor 1, a reducer 2, a first chain drive 3, and a second chain drive 4; the motor 1 drives the first chain drive 3 and the second chain drive 4 through the reducer 2 so that the driven roller 6 also rotates together .

The positioning device for parts conveyed by the roller table mainly includes a travel switch 5, a first part positioning system, and a second part positioning system. In the conveying direction of the roller table, the first part positioning system, the second part positioning system and the travel switch 5 are arranged in sequence from front to back.

The limit switch 5 is arranged on the roller table, and generates a position signal when the part passes, and transmits it to the control device, and the control device controls the motor to stop with a delay according to the position signal, and the part stops at the required position.

The first part positioning system includes the first cylinder 16, the first cylinder fixing part 17, the first push block 18, the first part 19, the first longitudinal positioning part 20, the first longitudinal positioning part bracket 21, the first cylinder 16 Fixed on the first cylinder fixture 17, the first cylinder fixture 17 is fixed on the frame 8, the front end of the piston rod of the first cylinder 16 is connected with the first push block 18, and the first cylinder 16 pushes the first push block 18 along the roller axial movement. The outer surface of the first push block 18 is a working surface in contact with the outer surface of the first component 19 . Along the conveying direction of the roller table, a first longitudinal positioning member 20 is arranged in front of the first push block 18 , and the first longitudinal positioning member 20 is connected between two first longitudinal positioning member brackets 21 . Two first longitudinal positioning member brackets 21 are fixed on the frame 8 .

The second part positioning system includes a second push block 11 , a second cylinder fixing part 12 , a second cylinder 13 , a second longitudinal positioning part 14 and a third cylinder 15 . The second cylinder 13 is fixed on the second cylinder fixing part 12 , and the second cylinder fixing part 12 is fixed on the frame 8 . The second push block 11 is located above the roller table and is connected to the piston rod of the second air cylinder 13 . One end surface of the second push block 11 is a working surface in contact with the second component 10 . The third air cylinder 15 is also fixed on the frame 8, the piston rod of the third air cylinder 15 is connected to the second longitudinal positioning member 14, and the second longitudinal positioning member 14 is arranged between two adjacent rollers. The third cylinder 15 drives the second longitudinal positioning member 14 to rise above the roller table.

Opposite to the working surface of the first pushing block 18 and the working surface of the second pushing block 11 , a transverse positioning plate 9 is arranged and fixed on the other side of the roller table.

When the roller conveying part positioning device of the present invention is working, the starter motor 1 rotates, and a series of rollers 6 are driven to rotate through the reducer 2, the first chain drive 3, and the second chain drive 4, and the first parts 19 on the drive rollers 6 are driven to Move to the right, when the first part 19 moves to the limit switch 5 position, and the limit switch 5 is pressed down, the delay stops the rotation of the motor 1, and the first part 19 moves to contact with the first longitudinal positioning member 20 and stops moving. The third cylinder 15 starts to push the second longitudinal positioning member 14 to rise above the upper surface of the roller 6, and then starts the motor 1 to rotate again, driving a series of rollers 6 to drive the second part 10 to move to the right. When the second part 10 moves to position of the travel switch 5, and press the travel switch 5 to delay the rotation of the motor 1 again. The second part 10 moves to the raised second longitudinal positioning member 14 and stops moving. Although the first part 19 is in the On the roller 6, due to the blocking of the first longitudinal positioning member 20 and the first longitudinal positioning member support 21, the first part 19 rubs against the lower roller 6 and cannot move to the right. Start the first cylinder 16 and the second cylinder 13, the first cylinder 16 pushes the first push block 18, and the first type of parts 19 move forward until they contact and fix the lateral positioning plate 9, and the second cylinder 13 pushes the second push block 11. The second part 10 moves forward until it contacts and fixes with the lateral positioning plate 9, so that the first part 19 and the second part 10 are positioned and fixed in the longitudinal direction and the lateral direction. When the manipulator grabbed the first part 19 and the second part 10 at the same time, the first cylinder 16 and the first push block 18, the second cylinder 13 and the second push block 11, the third cylinder 15 and the second longitudinal positioning member 14 all Returning to the original place does not affect the grasping of the first part 19 and the second part 10.

In order to adjust the longitudinal distance between the first part 19 and the second part 10, the third air cylinder 15 is fixed on the frame 8 through a front-rear position adjustment mechanism. Adjusting the positions of the third cylinder 15 and the second longitudinal positioning member 14 along the conveying direction of the roller table can realize the adjustment of the longitudinal distance between the first part 19 and the second part 10. The front and rear position adjustment mechanism can be It is realized by the way of sliding seat and sliding rail, that is, the sliding rail is set on the frame along the conveying direction of the roller table, the third cylinder is arranged on a sliding seat, and the sliding seat is slidable to cooperate with the sliding rail.

As other implementation manners, the first push block, the second push block, and the second longitudinal positioning member may be driven by a hydraulic method or by a motor through a transmission mechanism.

The parts of the present invention that are not described in detail are known technologies of those skilled in the art.

Claims (5)

1. A positioning device for parts conveyed by a roller table, the roller table includes a plurality of rollers and a roller drive system; the roller drive system includes a motor; it is characterized in that the positioning device includes: The limit switch is arranged on the roller table, and generates a position signal when the part passes, and transmits it to the control device, and the control device controls the motor to stop with a delay according to the position signal; The first part positioning system includes a first push block that is located above the roller table and can be translated and fixed along the axial direction of the roller, and also includes a first push block driving device for driving and fixing the first push block; the first One end surface of the push block is a working surface in contact with the first part; it also includes a first longitudinal positioning member arranged above the roller table, and the first longitudinal positioning member is positioned at the first pusher in the conveying direction of the roller table. the front of the block; The second part positioning system includes a second push block that is located above the roller table and can be translated and fixed along the axial direction of the roller, and also includes a second push block driving device for driving and fixing the second push block; the second One end surface of the push block is a working surface in contact with the second part; it also includes a second longitudinal positioning member arranged between two adjacent rollers and can be raised above the roller table, and a second vertical positioning member that drives the second longitudinal positioning member to go up and down Longitudinal positioning member driving device, the second longitudinal positioning member is located in front of the second push block and behind the first push block in the conveying direction of the roller table; Opposite to the working surface of the first pushing block and the working surface of the second pushing block, a lateral positioning plate is fixed on the other side of the roller table; In the conveying direction of the roller table, the first part positioning system, the second part positioning system and the travel switch are arranged in sequence from front to back. 2. The positioning device for parts conveyed by roller table according to claim 1, characterized in that: said first push block driving device comprises a first air cylinder; said first air cylinder is fixed on the first air cylinder fixture, and the first The cylinder fixing part is fixed on the frame, and the piston rod of the first cylinder is parallel to the roller and connected with the first push block. 3. The roller conveying part positioning device according to claim 1 or 2, characterized in that: the second push block driving device includes a second cylinder and a second cylinder fixing member; the second cylinder is fixed on the second cylinder On the fixing part, the second air cylinder fixing part is fixed on the frame, and the piston rod of the second air cylinder is parallel to the roller and connected with the second push block. 4. The positioning device for parts conveyed by roller table according to claim 3, characterized in that: said second longitudinal positioning member driving device comprises a third cylinder, the third cylinder is fixed on the frame, and the piston rod of the third cylinder Attach the second longitudinal positioner. 5. The positioning device for parts conveyed by a roller table according to claim 1, wherein a front and rear position adjustment mechanism is provided corresponding to the second longitudinal positioning member.

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