Telescopic positioning device

Abstract

The utility model relates to a conveying positioning device, in particular to a telescopic positioning device, which comprises a lifting base, the lifting cylinder is arranged on the lifting base; the lifting guide columns are arranged on the lifting base and located on the two sides of the lifting air cylinder. The positioning seat is arranged on the lifting guide column in a sliding manner and is connected with the lifting air cylinder; the positioning cylinder is arranged on the positioning seat; the buffer is arranged on the positioning seat; and the positioning plate is movably arranged on the positioning seat and is respectively connected with the positioning cylinder and the buffer. According to the telescopic positioning device, radial force is borne by additionally arranging the lifting guide columns, the service life of the lifting air cylinder is prolonged, springback of the positioning plate is avoided by adopting the buffer for buffering, the positioning plate is reset through the positioning air cylinder, and the telescopic positioning device is compact in overall structure, high in positioning accuracy and long in service life.

Description

Technical Field

[0001] The utility model relates to a conveying and positioning device, in particular to a telescopic positioning device. Background Art

[0002] A positioning device is usually provided on a conveying line. After detecting the conveyed article, the positioning device extends above the conveying line to position the article so as to enter the next process.

[0003] The telescopic device of the existing positioning device adopts a double-axis or multi-axis cylinder. Due to the relatively large mass of some articles, the impact force received when positioning the articles is relatively large, and the cylinder receives a radial force during positioning, so the service life of the cylinder is relatively short.

[0004] In addition, in order to achieve buffering during positioning, a spring is arranged between the positioning plate and the positioning seat for buffering. When the force of the spring is relatively large, the spring pushes the article to move in the reverse direction through the positioning plate, resulting in inaccurate positioning of the article. Summary of the Utility Model

[0005] In order to solve the problems of relatively short service life of the cylinder caused by large radial force and inaccurate positioning caused by spring force, the utility model provides a telescopic positioning device, which can not only improve the service life of the cylinder, but also has high positioning accuracy. The specific technical solutions are as follows:

[0006] A telescopic positioning device includes: a lifting base; a lifting cylinder provided on the lifting base; lifting guide columns provided on the lifting base and located on both sides of the lifting cylinder; a positioning seat slidably provided on the lifting guide columns and connected to the lifting cylinder; a positioning cylinder provided on the positioning seat; a buffer provided on the positioning seat; and a positioning plate movably provided on the positioning seat and connected to the positioning cylinder and the buffer respectively.

[0007] Preferably, the telescopic positioning device further includes: a lifting connecting rod, which is respectively connected to the lifting cylinder and the positioning seat.

[0008] Preferably, the telescopic positioning device further includes: a self-lubricating guide sleeve, which is provided on the positioning seat and movably inserted on the lifting guide column.

[0009] Preferably, the telescopic positioning device further includes: a positioning guide column, which is fixed on the positioning plate and movably inserted on the positioning seat.

[0010] Preferably, the telescopic positioning device further includes: a positioning screw, which is installed on the positioning seat and arranged opposite to the positioning plate for adjusting the position of the positioning plate.

[0011] Further, the telescopic positioning device further includes: a positioning nut, which is installed on the positioning screw rod and used for locking the position of the positioning screw rod.

[0012] Preferably, the telescopic positioning device further includes: a detection device, which is arranged on the lifting cylinder and the positioning cylinder and used for detecting the positions of the lifting cylinder and the positioning cylinder.

[0013] Further, the detection device includes: a first magnetic sensor, which is arranged on the lifting cylinder; and a second magnetic sensor, which is arranged on the positioning cylinder.

[0014] Preferably, a positioning groove is provided on the positioning seat, and the positioning plate is movably located in the positioning groove.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] A telescopic positioning device provided by the utility model bears radial force by adding lifting guide columns, improves the service life of the lifting cylinder, buffers by adopting a buffer, avoids the rebound of the positioning plate, and resets the positioning plate through a positioning cylinder. The overall structure is compact, the positioning accuracy is high, and the service life is long. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the present application;

[0018] Figure 2 is a top view of the present application;

[0019] Figure 3 is a cross-sectional view along Figure 2 line A-A in

[0020] Figure 4 is a cross-sectional view along Figure 3 line B-B in

[0021] Figure 5 is an assembly schematic diagram of the positioning seat, the positioning plate, the positioning cylinder, the positioning screw rod, the positioning guide column and the buffer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The present utility model will be further described below in conjunction with the accompanying drawings.

[0023] As Figures 1 to 5As shown in the figure, a telescopic positioning device includes a lifting base 1, a lifting cylinder 21, lifting guide columns 31, a positioning seat 4, a positioning cylinder 51, a buffer 8, and a positioning plate 6. The lifting base 1 is fixed on the conveying equipment. The lifting guide columns 31 are cylindrical guide columns, and the lifting guide rails are symmetrically fixed at both ends of the lifting base 1. The lifting cylinder 21 is fixed at the middle position of the lifting base 1. The piston rod of the lifting cylinder 21 is connected to the positioning seat 4. The two ends of the positioning seat 4 are movably inserted on the lifting guide columns 31. The lifting cylinder 21 drives the positioning seat 4 to lift and lower. The lifting guide columns 31 guide the positioning seat 4 to lift and lower in the vertical direction, and the lifting guide columns 31 are used to bear the radial force and radial impact force, thereby reducing the radial force on the lifting cylinder 21, improving the service life of the lifting cylinder 21, and reducing maintenance. The symmetrically arranged lifting guide columns 31 can not only improve the strength and bear a large radial force, but also prevent the positioning seat 4 from rotating, and make the force on the positioning seat 4 uniform, improving the reliability and stability. The positioning cylinder 51 is fixed on the positioning seat 4. The piston rod of the positioning cylinder 51 is connected to the positioning plate 6. The positioning plate 6 is movably located on one side of the positioning seat 4, and the positioning plate 6 faces the article. The buffer 8 is installed on the positioning seat 4 and symmetrically located on both sides of the positioning cylinder 51. The buffer 8 is also connected to the positioning plate 6. The buffer 8 is used to buffer when the article touches the positioning plate 6, reducing the impact force and vibration. The positioning cylinder 51 drives the positioning plate 6 to return to the buffer position, solving the problem that the buffer 8 has a small reset force and cannot reset the positioning plate 6. The positioning cylinder 51 is in a free state during buffering, and the piston rod of the positioning cylinder 51 can move freely, avoiding the positioning cylinder 51 restricting the movement of the positioning plate 6.

[0024] The lifting cylinder 21 drives the positioning seat 4 to descend below the conveying line without affecting the feeding of the conveying line.

[0025] The buffer 8 can be a nitrogen buffer 8 or a hydraulic buffer 8. The type of the buffer 8 is selected according to the maximum buffer force.

[0026] The stroke of the buffer 8 is also larger than that of the cylinder, which can reduce the width of the positioning seat 4 and make the structure compact.

[0027] The positioning cylinder 51 can also be supplied with high-pressure gas through a solenoid valve when the positioning plate 6 is compressed to the positioning position, so that the positioning cylinder 51 is in a retracted state, avoiding the buffer 8 driving the positioning plate 6 to reset, solving the problem that the positioning plate 6 resets under the action of a spring or buffering, ensuring the reliable positioning of the article, and increasing the reliability.

[0028] In order to reduce the weight of the positioning seat 4, a positioning groove 41 is provided on the positioning seat 4, and the positioning plate 6 is movably located in the positioning groove 41.

[0029] To reduce the length of the lifting cylinder 21 and thus the length of the overall telescopic positioning rotating shaft, the telescopic positioning device further includes a lifting connecting rod 23. The lifting connecting rod 23 is respectively connected to the lifting cylinder 21 and the positioning seat 4. The lifting connecting rod 23 facilitates the connection between the piston rod of the lifting cylinder 21 and the positioning seat 4, thereby shortening the length of the lifting cylinder 21.

[0030] To improve the flexibility of the lifting of the positioning seat 4 and reduce the friction, the telescopic positioning device further includes a self-lubricating guide sleeve 32. The self-lubricating guide sleeve 32 is fixed at both ends of the positioning seat 4, and the self-lubricating guide sleeve 32 is movably inserted on the lifting guide post 31.

[0031] To prevent the positioning plate 6 from rotating and improve the stability of the positioning plate 6, the telescopic positioning device further includes positioning guide posts 71. The positioning guide posts 71 are fixed on the positioning plate 6 and symmetrically located on both sides of the positioning cylinder 51. The positioning guide posts 71 are also movably inserted on the positioning seat 4. To reduce the friction, the positioning guide posts 71 are movably inserted on the positioning seat 4 through linear bearings.

[0032] To facilitate the adjustment of the position of the positioning plate 6, the telescopic positioning device further includes a positioning screw 81. The positioning screw 81 is installed in the threaded hole of the positioning seat 4. The end of the positioning screw 81 is arranged opposite to the positioning plate 6. The positioning screw 81 is arranged opposite to both ends of the positioning plate 6. Rotating the positioning screw 81 can adjust the length of the positioning screw 81 extending out of the positioning seat 4, thereby adjusting the distance between the positioning plate 6 and the positioning seat 4 and realizing the position adjustment of the positioning plate 6. The positioning screw 81 can adopt a fine thread to increase the adjustment accuracy.

[0033] To prevent the positioning screw 81 from rotating automatically due to impact, a positioning nut 82 is also installed on the positioning screw 81. After the positioning screw 81 is adjusted in place, the positioning nut 82 can be pressed against the positioning seat 4, thereby realizing the position locking of the positioning screw 81, preventing the positioning screw 81 from rotating automatically, and improving the reliability and stability of the positioning.

[0034] To accurately detect the position of the cylinders and improve the reliability of control, the telescopic positioning device further includes a detection device. The detection device is arranged on the lifting cylinder 21 and the positioning cylinder 51 for detecting the positions of the lifting cylinder 21 and the positioning cylinder 51. Specifically, the detection device includes a first magnetic sensor 22 and a second magnetic sensor 52. The first magnetic sensor 22 is arranged on the lifting cylinder 21; the second magnetic sensor 52 is arranged on the positioning cylinder 51.

[0035] When positioning is required, the piston rod of the lifting cylinder 21 extends, and the lifting cylinder 21 drives the positioning seat 4 to rise above the conveyor line. When the first magnetic sensor 22 detects the piston of the lifting cylinder 21, it indicates that the instruction manual has been lifted to the set position. Then the positioning cylinder 51 extends, and the positioning cylinder 51 drives the positioning plate 6 to move in front of the positioning seat 4. Next, the air circuit of the positioning cylinder 51 is disconnected, and the positioning cylinder 51 is in a free state. When the item touches the positioning plate 6, the item pushes the positioning plate 6 to move towards the positioning seat 4, and the buffer 8 buffers, causing the item to decelerate. When the positioning plate 6 touches the positioning screw rod 81, positioning is achieved. At this time, after the second sensor detects the piston rod of the positioning cylinder 51, the air circuit can be opened to keep the second cylinder in a retracted state, preventing the positioning plate 6 from moving under the action of the buffer 8. When positioning is completed, the lifting cylinder 21 drives the positioning seat 4 to descend below the conveyor line.

[0036] The technical principle of the present utility model has been described in combination with specific embodiments above. These descriptions are only for explaining the principle of the present utility model and cannot be interpreted in any way as a limitation to the protection scope of the present utility model. Based on the explanations herein, those skilled in the art can readily conceive of other specific embodiments of the present utility model without creative efforts, and these embodiments will fall within the protection scope of the claims of the present utility model.

Claims

1. A telescopic positioning device, characterized in that: include: Lifting base (1); A lifting cylinder (21) is arranged on the lifting base (1); Lifting guide columns (31) are arranged on the lifting base (1) and are located on both sides of the lifting cylinder (21); A positioning seat (4) is slidably disposed on the lifting guide column (31) and connected to the lifting cylinder (21); A positioning cylinder (51) is arranged on the positioning seat (4); A buffer (8) is arranged on the positioning seat (4); and A positioning plate (6) is movably disposed on the positioning seat (4) and is respectively connected to the positioning cylinder (51) and the buffer (8).

2. A telescopic positioning device according to claim 1, characterized in that: The telescopic positioning device further comprises: a lifting connecting rod (23), wherein the lifting connecting rod (23) is respectively connected to the lifting cylinder (21) and the positioning seat (4).

3. A telescopic positioning device according to claim 1, characterized in that: The telescopic positioning device further comprises: a self-lubricating guide sleeve (32), which is arranged on the positioning seat (4) and movably inserted on the lifting guide column (31).

4. A telescopic positioning device according to claim 1, characterized in that: The telescopic positioning device further comprises: a positioning guide column (71), wherein the positioning guide column (71) is fixed on the positioning plate (6) and movably inserted on the positioning seat (4).

5. The telescopic positioning device according to claim 1, characterized in that: The telescopic positioning device further comprises: a positioning screw (81), wherein the positioning screw (81) is mounted on the positioning seat (4) and is arranged opposite to the positioning plate (6) for adjusting the position of the positioning plate (6).

6. A telescopic positioning device according to claim 5, characterized in that: The telescopic positioning device further comprises: a positioning nut (82), wherein the positioning nut (82) is mounted on the positioning screw (81) and is used to lock the position of the positioning screw (81).

7. A telescopic positioning device according to any one of claims 1 to 6, characterized in that: The telescopic positioning device further comprises: a detection device, which is arranged on the lifting cylinder (21) and the positioning cylinder (51) and is used to detect the positions of the lifting cylinder (21) and the positioning cylinder (51).

8. A telescopic positioning device according to claim 7, characterized in that: The detection device comprises: a first magnetic sensor (22), the first magnetic sensor (22) being arranged on the lifting cylinder (21); and A second magnetic sensor (52), wherein the second magnetic sensor (52) is arranged on the positioning cylinder (51).

9. A telescopic positioning device according to any one of claims 1 to 6, characterized in that: The positioning seat (4) is provided with a positioning groove (41), and the positioning plate (6) is movably located in the positioning groove (41).

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