CN115308428A

CN115308428A - Automatic sample feeding device for vertical tube furnace

Info

Publication number: CN115308428A
Application number: CN202210945637.2A
Authority: CN
Inventors: 王闰鹏; 郭兆东; 周伟; 支丹阳; 王学华; 陈晓东
Original assignee: Steel Research Nanoco Jiangsu Testing Technology Research Institute Co ltd
Current assignee: Steel Research Nanoco Jiangsu Testing Technology Research Institute Co ltd
Priority date: 2022-08-08
Filing date: 2022-08-08
Publication date: 2022-11-08
Anticipated expiration: 2042-08-08
Also published as: CN115308428B

Abstract

The invention discloses an automatic sample feeding device for a vertical tube furnace, which comprises a tray, wherein a plurality of grooves are formed in the tray, and are communicated end to form a guide groove for transferring a crucible; the guide groove is rotationally connected with a plurality of gear shafts, the gear shafts are connected through a chain, and the chain is connected with a crucible holder for holding a crucible; the first driving motor is arranged at the bottom of the tray and can drive the gear shaft to rotate and drive the chain to move along the direction of the guide groove; the tray is connected with the correlation photoelectric switch who is located the guide way both sides, and one side of correlation photoelectric switch is equipped with the manipulator that is used for carrying the crucible, and the below of tray is equipped with can drive manipulator pivoted driving motor No. two, and No. two driving motor driving mechanical hand will be located the crucible of correlation point switch and carry, have improved the precision of a plurality of crucibles in accurate location ability and the handling of transfer process.

Description

Automatic sample feeding device for vertical tube furnace

Technical Field

The invention relates to the field of vertical tube furnaces, in particular to an automatic sample feeding device for a vertical tube furnace.

Background

The infrared carbon-sulfur analyzer is mainly used for quickly measuring the carbon and sulfur contents in carbon steel, alloy steel, stainless steel, cast iron, ductile iron and other ferrous metals, copper, cobalt, nickel and other nonferrous metals, praseodymium, neodymium, dysprosium and other rare earth metals, cement, ceramics, ores, coal, coke, furnace slag, catalysts, crude oil, rubber and other solid and liquid inorganic and organic materials.

In traditional vertical tube furnace automatic sampling equipment and foreign similar equipment, a sampling tray is small, so that the sampling position number is low, and the function of detecting large-batch incoming materials is difficult to realize; ABS material is selected for the tray material mostly, uses easy ageing deformation for a long time, influences positioning accuracy. In domestic similar equipment, the positioning is realized by adopting a mechanical positioning mode and a program control motor rotation mode in the aspect of positioning, mechanical parts are worn for a long time, so that the crucible taking and placing positions generate displacement, and the positioning precision can be changed. In terms of control, the traditional motor driver is complex to debug and is not beneficial to maintenance and debugging.

Disclosure of Invention

In order to solve the technical problem, the invention provides the automatic sample introduction device for the vertical tube furnace, and the automatic sample introduction device not only improves the number of sample introduction digits, but also improves the crucible positioning and detection precision.

The technical scheme of the invention is as follows: an automatic sample introduction device for a vertical tube furnace comprises a tray, wherein a plurality of grooves are formed in the tray, and are communicated end to form a guide groove for crucible transportation; the guide groove is rotatably connected with a plurality of gear shafts, the gear shafts are connected through chains, and the chains are connected with crucible holders for placing the crucibles; the bottom of the tray is provided with a first driving motor, and the first driving motor can drive the gear shaft to rotate and drive the chain to move along the direction of the guide groove;

the tray is connected with the correlation photoelectric switch that is located the guide way both sides, one side of correlation photoelectric switch is equipped with the manipulator that is used for carrying the crucible, the below of tray is equipped with can drive manipulator pivoted driving motor No. two, driving motor drive No. two the manipulator will be located the crucible of correlation point switch is carried.

Further, the crucible is equipped with 60, the crucible holds in the palm and is equipped with 60, 60 crucible holds in the palm equidistant connection in the chain.

Furthermore, the crucible support and the chain are detachably connected.

Further, the opposed-emission photoelectric switch includes: the two installation bases are symmetrically connected to the two sides of the guide groove, and the two inductors are respectively connected to the two installation bases; when the crucible is positioned between the two inductors, the chain stops rotating; when the crucible is far away from the two inductors, the chain continuously rotates.

Furthermore, two opposite sides of the mounting seat are provided with supporting blocks, and the supporting blocks are positioned above the guide groove to support the crucible holder.

Further, the manipulator comprises a gripper, a clamping cylinder and a rotating shaft, the gripper is connected with the clamping cylinder, the rotating shaft is connected with the clamping cylinder, and the rotating shaft is connected with the second driving motor through a connecting piece.

Further, the connecting piece comprises a friction ring, a friction ring and a friction cover, and the friction cover is connected to the friction ring; the friction ring is sleeved at the shaft end of the second driving motor and is positioned below the friction ring; and the shaft end of the second motor is inserted into the rotating shaft and is fixed with the friction cover through the friction ring.

Furthermore, the friction ring is connected with a positioning pin, the bottom of the rotating shaft is provided with a positioning hole matched with the positioning pin, and the positioning pin is connected with the positioning hole in a clamping mode.

Furthermore, an anti-backlash ring sleeved at the shaft end of the second driving motor is arranged below the friction ring, a support is sleeved on the side wall of the anti-backlash ring, one end of the support is connected with the second driving motor, and the other end of the support is connected with a lifting assembly.

Further, the lifting assembly comprises a vertical plate fixedly connected to the tray and a lifting cylinder connected to the vertical plate, and the telescopic end of the lifting cylinder is connected with the support.

The beneficial technical effects of the invention are as follows:

1. crucible and crucible hold in the palm all are equipped with 60, and 60 crucible holds in the palm and connects in the chain, transports the crucible of placing on crucible holds in the palm through the chain, has increased the autoinjection number of bits, and then can improve the efficiency that detects.

2. The crucible is positioned by adopting an infrared light detection mode of an inductor, so that the detection precision of the crucible positioning is improved.

3. The clearance between the second driving motor and the rotating shaft is eliminated through the clearance eliminating ring, so that the precision error in the rotating process is reduced.

4. The friction ring, the friction cover and the positioning pin are arranged, so that the position of the second driving motor driving gripper, the clamping cylinder and the rotating shaft in the rotating process is prevented from being deviated, and the precision of the rotating process is improved.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a top view of the present invention;

FIG. 3 is a bottom view of the present invention;

FIG. 4 is a schematic structural diagram of a correlation photoelectric switch according to the present invention;

FIG. 5 is a schematic view of the overall structure of the robot of the present invention;

fig. 6 is a sectional view of the robot hand of the present invention.

The reference signs are:

1. a tray; 11. a guide groove; 12. a gear shaft; 13. a first driving motor; 14. an origin position; 15. a crucible grabbing position; 16. a crucible placement position; 2. a correlation photoelectric switch; 21. a mounting base; 22. an inductor; 23. a support block; 3. a manipulator; 31. a gripper; 32. a clamping cylinder; 33. a rotating shaft; 34. a friction cover; 35. a friction ring; 36. a friction ring; 37. positioning pins; 38. positioning holes; 39. a gap eliminating ring; 4. a second drive motor; 5. a lifting cylinder; 6. a vertical plate; 7. a crucible holder; 8. a baffle plate; 9. and (4) a bracket.

Detailed Description

In order to make the technical means of the present invention more clearly understood and to make the implementation of the technical means in accordance with the content of the specification, the following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings and examples, which are used for illustrating the present invention but not for limiting the scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships described based on embodiments and shown in the drawings, or orientations or positional relationships that the present invention is usually placed in when the product is used, and are only for convenience of describing and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

As shown in fig. 1, fig. 2 and fig. 3, the invention specifically relates to an automatic sample introduction device for a vertical tube furnace, which comprises a tray 1, wherein a plurality of grooves are arranged on the tray 1, and are communicated end to form a guide groove 11 for transferring a crucible; the guide groove 11 is rotatably connected with a plurality of gear shafts 12, the gear shafts 12 are connected with each other through a chain (not shown), and the chain is connected with a crucible holder 7 for placing the crucible (not shown); a first driving motor 13 is arranged at the bottom of the tray 1, and the first driving motor 13 can drive the gear shaft 12 to rotate and drive the chain to move along the direction of the guide groove 11;

the chain is placed in the guide groove 11 and connected through a plurality of gear shafts 12, and when one of the gear shafts 12 is driven to rotate by the first driving motor 13, the chain can be driven to rotate synchronously with the other gear shafts 12. The crucible holds in the palm 7 and installs the tip at the chain, and on the crucible holds in the palm 7 is deposited with the crucible to the manual work, a driving motor 13 drive chain rotation and drive the crucible and remove to the assigned position.

Tray 1 is connected with the correlation photoelectric switch 2 that is located 11 both sides of guide way, one side of correlation photoelectric switch 2 is equipped with the manipulator 3 that is used for carrying the crucible, the below of tray 1 is equipped with can drive 3 pivoted driving motor 4 of manipulator, the drive of No. two driving motor 4 the manipulator 3 will be located the crucible of correlation point switch is carried.

The crucible is moved to the opposed photoelectric switch 2 by a chain, and the chain stops rotating after the opposed photoelectric switch 2 detects that the crucible reaches a specified position. No. two driving motor 4 drive manipulator 3 and rotate to correlation photoelectric switch 2's top, and manipulator 3 presss from both sides the crucible of placing on crucible support 7 and gets. After the crucible is successfully clamped, the second driving motor 4 drives the mechanical arm 3 to carry the crucible. At this moment, the correlation photoelectric switch 2 can not detect the crucible, the first driving motor 13 drives the chain to continue to rotate, so that the next crucible reaches the correlation photoelectric switch 2, the chain stops rotating again, and the reciprocating is carried out, so that the crucible is conveyed and detected.

The crucible is equipped with 60, the crucible holds in the palm 7 and is equipped with 60, 60 crucible holds in the palm 7 equidistant connect in the chain uses through the cooperation of crucible hold in the palm 7 and crucible each other, has improved the number of bits that the appearance detected, and then has improved the efficiency that detects.

The crucible holder 7 is detachably connected with the chain.

Wherein, detachable connected mode is multiple, can be: the connecting method comprises the steps of clamping connection, positioning connection, threaded connection and the like, all the connecting modes are conventional technical means in the prior art, and the clamping connection is adopted in the application without being stated one by one.

As shown in fig. 1 and 4, the opposed-beam photoelectric switch 2 includes: two installation bases 21 symmetrically connected to two sides of the guide groove 11 and two sensors 22 respectively connected to the two installation bases 21; when the crucible is positioned between the two inductors 22, the chain stops rotating; when the crucible is far away from the two inductors 22, the chain continuously rotates.

When the two sensors 22 are in the opposed state, and the crucible is moved between the two sensors 22 by the chain, the opposed state of the two sensors 22 blocks the crucible, and the robot 3 operates to complete the conveyance of the crucible. When the crucible is carried away by the manipulator 3, the correlation state between the two sensors 22 is recovered, and at the moment, the chain is in a state of continuous rotation until the crucible blocks the correlation state of the two sensors 22 again.

Similarly, the sensor 22 adopts an infrared light detection mode, so that the detection precision of crucible positioning is improved, the crucible can accurately reach a designated place, and the carrying of the manipulator 3 is facilitated.

Two opposite sides of the mounting seat 21 are provided with supporting blocks 23, and the supporting blocks 23 are positioned above the guide grooves 11 to support the crucible holder 7.

Wherein, the height that highly is less than mount pad 21 of supporting shoe 23, and the one end of supporting shoe 23 is located the top of guide way 11, and when the crucible removed to between two inductors 22, the crucible held in the palm 7 top that is located supporting shoe 23, and there was the clearance between crucible held in the palm 7 and the supporting shoe 23. The supporting block 23 ensures that the position of the crucible support 7 cannot change or fall off in the carrying process of the crucible, and the safety of the transferring and carrying process is ensured.

As shown in fig. 1 and 5, the manipulator 3 includes a gripper 31, a clamping cylinder 32 and a rotating shaft 33, the gripper 31 is connected to the clamping cylinder 32, the rotating shaft 33 is connected to the clamping cylinder 32, and the rotating shaft 33 is connected to the second driving motor 4 through a connecting member.

It should be noted that the clamping cylinder 32 can drive the gripper 31 to clamp, and an anti-skid rubber pad is arranged on the inner side of the gripper 31, so that stability in the clamping process is ensured; the clamping cylinder 32 is connected to the end of the rotating shaft 33 through a bolt, and the second driving motor 4 can drive the rotating shaft 33 to rotate and drive the gripper 31 to rotate, so that the gripper 31 accurately reaches the upper side of the correlation photoelectric switch 2.

As shown in fig. 3 and 6, the bottom of the rotating shaft 33 is connected with a blocking piece 8, the bottom of the tray 1 is connected with a plurality of positioning switches, the positioning switches are respectively an original point position 14 of the manipulator 3, a crucible grabbing position 15 and a crucible placing position 16, and the blocking piece 8 and the positioning switches are mutually matched for use, so that the gripper 31 can accurately reach a specified position.

As shown in fig. 6, the connecting member includes a friction ring 36, a friction ring 35, and a friction cover 34, wherein the friction cover 34 is connected to the friction ring 35; the friction ring 36 is sleeved at the shaft end of the second driving motor 4 and is positioned below the friction ring 35; the shaft end of the second motor is inserted into the rotating shaft 33 and fixed with the friction cover 34 through the friction ring 35.

It should be noted that, wherein, the shaft end of the second driving motor 4 is located inside the rotating shaft 33, the friction ring 35 is sleeved on the shaft end of the second driving motor 4 and is fixed through the friction cover 34, at this time, the friction ring 35 and the friction cover 34 are both located inside the rotating shaft 33, and when the shaft end of the second driving motor 4 rotates, the friction ring 35, the friction cover 34 and the rotating shaft 33 generate certain friction force, so that the rotating shaft 33 is ensured to be more accurate in the rotating process, and the phenomenon of deviation or slipping is not generated.

And the shaft end of the second driving motor 4 synchronously drives the friction ring 36 to rotate when rotating.

The friction ring 36 is connected with a positioning pin 37, a positioning hole 38 used for matching the positioning pin 37 is arranged at the bottom of the rotating shaft 33, and the positioning pin 37 is connected with the positioning hole 38 in a clamping mode.

Through the clamping connection of the positioning pin 37 and the positioning hole 38, the rotating shaft 33 is driven to rotate synchronously when the friction ring 36 rotates synchronously at the shaft end of the second driving motor 4.

In conclusion, the friction ring 36, the friction ring 35, the friction cover 34 and the positioning pin 37 are matched with each other, so that the friction force between the shaft end of the second driving motor 4 and the rotating shaft 33 is increased, the rotating shaft 33 is ensured to be more stable in the rotating process, and the position deviation is avoided.

An anti-backlash ring 39 sleeved at the shaft end of the second driving motor 4 is arranged below the friction ring 36, and a gap between the second driving motor 4 and the rotating shaft 33 is eliminated through the anti-backlash ring 39, so that the precision error in the rotating process is reduced. The side wall of the anti-backlash ring 39 is sleeved with a support 9, one end of the support 9 is connected with the second driving motor 4, and the other end of the support 9 is connected with a lifting assembly. The second driving motor 4 is connected with the lifting assembly through the bracket 9, and the lifting assembly can lift or lower the second driving motor 4, the rotating shaft 33 and the hand grip 31 through the bracket 9.

The lifting assembly comprises a vertical plate 6 fixedly connected with the tray 1 and a lifting cylinder 5 connected with the vertical plate 6, and the telescopic end of the lifting cylinder 5 is connected with the support 9.

Wherein,

riser

6 and 1 fixed connection of tray support lifting unit and No. two driving motor 4 and tongs 31 through riser 6, have guaranteed the stability of lifting unit and No. two driving motor 4 in the course of the work.

The working principle of the invention is as follows:

when the crucible reaches the position between the two inductors 22, the chain stops rotating, the second driving motor 4 drives the rotating shaft 33 to rotate, when the baffle reaches the crucible grabbing position 15, the second driving motor 4 stops rotating, and at the moment, the hand grip 31 reaches the upper part of the crucible; the lifting cylinder 5 drives the support 9 to move and drives the hand grips 31 to vertically move downwards, so that the hand grips 31 are located on two sides of the crucible, and the clamping cylinder 32 drives the hand grips 31 to clamp and fix the crucible. Lift cylinder 5 drive support 9 motion to drive the vertical upward movement of tongs 31, make tongs 31 carry the crucible, at this moment, the crucible breaks away from crucible support 7, is located the top that crucible support 7.

The second driving motor 4 drives the rotating shaft 33 to rotate, and when the shutter reaches the crucible placing position 16, the second driving motor 4 stops rotating. The lifting cylinder 5 drives the support 9 to move and drives the hand grip 31 to vertically move downwards, and the clamping cylinder 32 drives the hand grip 31 to loosen the crucible and place the crucible at a specified position.

The lifting cylinder 5 drives the support 9 to move and drives the gripper 31 to move vertically upwards, then the second driving motor 4 drives the rotating shaft 33 to rotate, and when the baffle reaches the original point position 14 of the manipulator 3, the second driving motor 4 stops rotating.

This is repeated, and the gripper 31 waits for the next gripping.

Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein.

Claims

1. An automatic sample introduction device for a vertical tube furnace is characterized by comprising a tray (1), wherein a plurality of grooves are formed in the tray (1), and are communicated end to form a guide groove (11) for transferring a crucible; the guide groove (11) is rotationally connected with a plurality of gear shafts (12), the gear shafts (12) are connected through chains, and the chains are connected with crucible holders (7) for placing the crucibles; a first driving motor (13) is arranged at the bottom of the tray (1), and the first driving motor (13) can drive the gear shaft (12) to rotate and drive the chain to move along the direction of the guide groove (11);

tray (1) is connected with correlation photoelectric switch (2) that are located guide way (11) both sides, one side of correlation photoelectric switch (2) is equipped with manipulator (3) that are used for carrying the crucible, the below of tray (1) is equipped with can drive manipulator (3) pivoted driving motor (4) No. two, driving motor (4) drive manipulator (3) will be located the crucible of correlation point switch is carried.

2. The automatic sample introduction device for the vertical tube furnace according to claim 1, wherein the number of the crucibles is 60, the number of the crucibles (7) is 60, and the 60 crucibles (7) are connected to the chain at equal intervals.

3. The automatic sample introduction device for a vertical tube furnace according to claim 2, wherein the crucible holder (7) is detachably connected to the chain.

4. The autosampler device for vertical tube furnace according to claim 1, wherein said correlation photoelectric switch (2) comprises: two installing seats (21) symmetrically connected to two sides of the guide groove (11) and two inductors (22) respectively connected to the two installing seats (21); when the crucible is positioned between the two inductors (22), the chain stops rotating; when the crucible is far away from the two inductors (22), the chain continuously rotates.

5. The automatic sample introduction apparatus for a vertical tube furnace according to claim 4, wherein support blocks (23) are provided at opposite sides of the two mounting seats (21), and the support blocks (23) are located above the guide grooves (11) to support the crucible holders (7).

6. The automatic sample introduction device for the vertical tube furnace according to claim 1, wherein the manipulator (3) comprises a hand grip (31), a clamping cylinder (32) and a rotating shaft (33), the hand grip (31) is connected with the clamping cylinder (32), the rotating shaft (33) is connected with the clamping cylinder (32), and the rotating shaft (33) is connected with the second driving motor (4) through a connecting piece.

7. The autoinjection device for vertical tube furnaces according to claim 6, wherein the connection piece comprises a friction ring (36), a friction ring (35), and a friction cover (34), the friction cover (34) being connected to the friction ring (35); the friction ring (36) is sleeved at the shaft end of the second driving motor (4) and is positioned below the friction ring (35); the shaft end of the second motor is inserted into the rotating shaft (33) and fixed with the friction cover (34) through the friction ring (35).

8. The automatic sample feeding device for the vertical tube furnace according to claim 7, wherein the friction ring (36) is connected with a positioning pin (37), a positioning hole (38) used for matching with the positioning pin (37) is formed in the bottom of the rotating shaft (33), and the positioning pin (37) is connected with the positioning hole (38) in a clamping mode.

9. The automatic sample feeding device for the vertical tube furnace according to claim 8, wherein an anti-backlash ring (39) sleeved at the shaft end of the second driving motor (4) is arranged below the friction ring (36), a bracket (9) is sleeved on the side wall of the anti-backlash ring (39), one end of the bracket (9) is connected with the second driving motor (4), and the other end of the bracket (9) is connected with a lifting assembly.

10. The autoinjection device for vertical tube furnaces according to claim 9, wherein the lifting assembly comprises a riser (6) fixedly connected to the tray (1) and a lifting cylinder (5) connected to the riser (6), the telescopic end of the lifting cylinder (5) being connected with the support (9).