CN216656949U

CN216656949U - Tower mill helical blade welding frock

Info

Publication number: CN216656949U
Application number: CN202220023072.8U
Authority: CN
Inventors: 张家荣; 张勇; 孙志明; 贾令波; 李永满; 王浩磊
Original assignee: Shenyang Chengwei Machinery Manufacturing Co ltd
Current assignee: Shenyang Chengwei Machinery Manufacturing Co ltd
Priority date: 2022-01-07
Filing date: 2022-01-07
Publication date: 2022-06-03
Anticipated expiration: 2032-01-07

Abstract

The utility model relates to the technical field of tower mills, in particular to a welding tool for helical blades of a tower mill, which comprises a bottom plate and side plates arranged on two sides of the bottom plate, wherein a first electric push rod is arranged on the side plate on the left side, a motor is arranged on the side plate on the right side through a connecting plate, two pressing blocks are arranged between the two side plates, one pressing block is rotatably connected with the output end of the first electric push rod, the other pressing block is fixedly connected with the output end of the motor, the two side plates are connected with sliding rods, a moving block is slidably arranged on the sliding rods, a driving lead screw is rotatably arranged on the two side plates, the moving block is in threaded connection with the driving lead screw, the right end of the driving lead screw is in transmission connection with the output end of the motor, and a limiting plate with a limiting groove at the top is arranged at the top end of the moving block. In the rotary welding process of the spiral shaft and the spiral blade, the pitch of the spiral blade is limited by the limiting plate, so that the pitch of the spiral blade is equal in the welding process, and the welding quality of the spiral blade is improved.

Description

Tower mill helical blade welding frock

Technical Field

The utility model relates to the technical field of tower mills, in particular to a welding tool for helical blades of a tower mill.

Background

The tower mill is a crushing device, the stirrer is a key part for realizing the grinding, the stirrer generally comprises a stirring shaft and stirring blades welded on the stirring shaft, the operation process of the spiral stirrer rotating at a low speed causes the motion circulation of the ordered mode of the crushing medium and the material due to the action of centrifugal force, gravity and friction force, and the material in the tower mill is crushed under the action of extrusion, grinding, shearing and friction among the grinding media.

The prior publication No. CN206373543U discloses a welding tool for a screw shaft, which supports the screw shaft by an external support, and provides sufficient space for welding the screw blade, thereby facilitating the welding of the screw blade; the inner supports are uniformly distributed, the longer spiral shaft is divided into a plurality of sections with the outer supports, the number of the spiral blades welded when the spiral shaft is suspended is reduced, the coaxiality change caused by uneven weight is reduced, and the spiral shaft is simple in structure and easy to process and install. However, in the use process of the welding tool, the pitch of the uniform helical blade cannot be limited to be constant, so that the pitch precision of the helical blade is not high when the welding is finished, and the welding quality of the helical blade is reduced.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a welding tool for helical blades of a tower mill, which can keep the pitch of the helical blades unchanged in the welding process, improve the welding quality of the helical blades and solve the problem of low welding precision of the existing helical blades.

In order to achieve the purposes of keeping the pitch of the helical blade unchanged and improving the welding quality of the helical blade in the welding process, the utility model provides the following technical scheme: a tower mill helical blade welding tool comprises a bottom plate and side plates arranged on the left side and the right side of the bottom plate, wherein a first electric push rod is arranged on the side plate on the left side, a motor is arranged on the side plate on the right side through a connecting plate, the output end of the first electric push rod is coaxial with the output end of the motor, two press blocks are arranged between the two side plates, one press block is rotatably connected with the output end of the first electric push rod, the other press block is fixedly connected with the output end of the motor, the opposite side walls of the two side plates are connected with slide rods, the slide rods are positioned under the first electric push rod, moving blocks are arranged on the slide rods in a sliding manner, driving lead screws are rotatably arranged on the opposite side walls of the two side plates, the driving lead screws are positioned between the slide rods and the first electric push rod, and the moving blocks are in threaded connection with the driving lead screws, the right end of the driving screw rod is in transmission connection with the output end of the motor through a continuously variable transmission, and a limiting plate with a limiting groove at the top is installed at the top end of the moving block.

Optionally, a second electric push rod is vertically installed between the limiting plate and the moving block.

Optionally, the limiting plate include with the fixed block that is the type of protruding that the second electric putter output is fixed and set up in the movable plate of the fixed block left and right sides, two the movable plate with form between the fixed block the spacing groove, transversely run through on the fixed block has stud, stud middle part pass through the bearing with the fixed block rotates to be connected, stud both ends respectively with two movable plate threaded connection.

Optionally, the tops of the fixed blocks and the two moving plates are respectively provided with a roller in a rotating mode on the opposite sides.

Optionally, the opposite side walls of the two pressing blocks are provided with supporting plates in a sliding mode along the radial direction, one side, close to the pressing block, of each supporting plate is provided with a dovetail slide block, dovetail grooves matched with sliding tracks of the dovetail slide blocks are formed in the pressing block, the supporting plates are connected with fixing screws in a threaded mode, and one ends, far away from nuts, of the fixing screws are abutted to the pressing blocks.

Optionally, the number of the dovetail grooves is two, length scales are carved on one side, close to the supporting plate, of the pressing block, the length scales are distributed along the radial direction of the pressing block, and the two dovetail grooves are symmetrically arranged on two sides of the length scales.

Compared with the prior art, the utility model provides a tower mill helical blade welding tool which has the following beneficial effects:

1. the screw pitch of the helical blade is limited when the limiting plate moves, so that the equal pitch of the helical blade in the welding process is ensured, and the welding quality of the helical blade is improved;

2. according to the utility model, the second electric push rod is arranged, and the distance between the limiting plate and the spiral shaft can be changed by the second electric push rod, so that the welding machine is suitable for welding spiral blades with different diameters;

3. according to the utility model, the limiting plate comprising the fixing block, the moving plate and the double-end screw rod is arranged, and the width of the limiting groove is changed by screwing the double-end screw rod, so that the limiting groove can clamp helical blades with different thicknesses, and the helical blades with different thicknesses are welded.

Drawings

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

FIG. 2 is a schematic front view of the present invention;

FIG. 3 is a schematic diagram of a stopper plate structure according to the present invention;

FIG. 4 is a schematic diagram of a disassembled structure of the pressing block and the supporting plate of the utility model.

In the figure: 1. a base plate; 2. a side plate; 3. a first electric push rod; 4. briquetting; 40. a dovetail groove; 5. a connecting plate; 6. a motor; 7. driving the screw rod; 8. a moving block; 9. a continuously variable transmission; 10. a screw shaft; 11. a helical blade; 12. a limiting groove; 13. a limiting plate; 130. a fixed block; 131. moving the plate; 14. a double-end screw rod; 15. a roller; 16. a second electric push rod; 17. a slide bar; 18. a support plate; 19. a dovetail slide block; 20. length scales; 21. and fixing the screw.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b): referring to fig. 1 to 4, an embodiment of the present invention provides a technical solution: a tower mill helical blade welding tool comprises a bottom plate 1 and side plates 2 arranged on the left side and the right side of the bottom plate 1, wherein a first electric push rod 3 is arranged on the left side plate 2, a motor 6 is arranged on the right side plate 2 through a connecting plate 5, the output end of the first electric push rod 3 is coaxial with the output end of the motor 6, two press blocks 4 are arranged between the two side plates 2, one press block 4 is rotatably connected with the output end of the first electric push rod 3, the other press block 4 is fixedly connected with the output end of the motor 6, opposite side walls of the two side plates 2 are connected with a slide bar 17, the slide bar 17 is positioned under the first electric push rod 3, a moving block 8 is slidably arranged on the slide bar 17, opposite side walls of the two side plates 2 are rotatably provided with a driving lead screw 7, the driving lead screw 7 is positioned between the slide bar 17 and the first electric push rod 3, the moving block 8 is in threaded connection with the driving screw 7, the right end of the driving screw 7 is in transmission connection with the output end of the motor 6 through the stepless speed changer 9, the output end of the motor 6 is fixed with the driving wheel of the stepless speed changer 9, the driving screw 7 is fixed with the driven wheel of the stepless speed changer 9, the top end of the moving block 8 is provided with a limiting plate 13 with a limiting groove 12, the screw shaft 10 of which the outer wall is sleeved with the screw blade 11 is clamped between the two pressing blocks 4 by utilizing the first electric push rod 3, during welding, the outer side of the screw blade 11 is arranged in the limiting groove 12 of the limiting plate 13, the right end of the screw blade 11 is welded with the screw shaft 10, then the motor 6 drives the screw shaft 10 to slowly rotate for welding, meanwhile, the motor 6 also drives the driving screw 7 to rotate through the stepless speed changer 9, the driving screw 7 drives the moving block 8 and the limiting plate 13 to move, the limiting groove 12 on the limiting plate 13 can limit the pitch of the screw blade 11 in the welding process, and the moving speed of the limit plate 13 can be controlled by the continuously variable transmission 9, so that the welding machine is suitable for welding the helical blades 11 with different pitches.

On the basis of the above embodiments, a second electric push rod 16 is vertically installed between the limiting plate 13 and the moving block 8 of the present embodiment, the second electric push rod 16 is telescopic along the height direction of the moving block 8, and the second electric push rod 16 can change the distance between the limiting plate 13 and the screw shaft 10, so as to be suitable for welding the helical blades 11 with different diameters.

On the basis of the above embodiment, the limiting plate 13 of this embodiment includes a fixing block 130 fixed to the output end of the second electric putter 16 and shaped like a Chinese character 'tu' and moving plates 131 disposed on the left and right sides of the fixing block 130, a limiting groove 12 is formed between the two moving plates 131 and the fixing block 130, a stud screw 14 transversely penetrates through the fixing block 130, the middle of the stud screw 14 is rotatably connected to the fixing block 130 through a bearing, two ends of the stud screw 14 are respectively in threaded connection with the two moving plates 131, and by screwing the stud screw 14, the width of the limiting groove 12 can be changed, so that the limiting groove 12 can clamp helical blades 11 with different thicknesses, and thereby helical blades 11 with different thicknesses are welded.

On the basis of the above embodiments, the rollers 15 are rotatably disposed on the top of the fixed block 130 and the opposite sides of the two moving plates (131), and the arrangement of the rollers 15 converts the sliding friction between the limiting plate 13 and the helical blade 11 into rolling friction, thereby reducing the friction force and avoiding the limiting plate 13 from being worn too fast.

On the basis of the above embodiments, the two pressing blocks 4 of the present embodiment are provided with supporting plates 18 on opposite side walls thereof in a radial sliding manner, one side of each supporting plate 18 close to the corresponding pressing block 4 is provided with a dovetail slider 19, the pressing block 4 is provided with a dovetail groove 40 matched with the sliding track of the dovetail slider 19, the supporting plate 18 is connected with a fixing screw 21 through a thread, one end of the fixing screw 21 far away from the nut abuts against the corresponding pressing block 4, when the screw shaft 10 is fixed, the distance between the supporting plate 18 and the center of the pressing plate can be adjusted first to make the distance equal to the radius of the screw shaft 10, and then the two ends of the screw shaft 10 are placed on the supporting plates 18 on the two pressing blocks 4, so that the screw shaft 10 and the output end of the motor 6 are coaxial, and the welding precision of the screw shaft 10 and the screw blade 11 is ensured.

On the basis of the above embodiment, two dovetail grooves 40 are provided in the embodiment, a length scale 20 is engraved on one side of the pressing block 4 close to the supporting plate 18, the length scale (20) is radially distributed along the pressing block (4), the two dovetail grooves 40 are symmetrically arranged on two sides of the length scale (20), and the length scale 20 can facilitate a user to judge the relative position of the circle center of the supporting plate 18 and the circle center of the pressing block 4, so as to ensure the adjustment accuracy of the supporting plate 18.

The working principle is as follows: firstly, fixing a screw shaft 10 sleeved with a screw blade 11, adjusting the position of a supporting plate 18 relative to a pressing block 4 according to the diameter of the screw shaft 10 when fixing, enabling the distance between the pressing block 4 and the inner side of the supporting plate 18 to be equal to the radius of the screw shaft 10, fixing the position of the supporting plate 18 through a fixing screw 21, then respectively placing two ends of the screw shaft 10 on the supporting plates 18 of two pressing blocks 4, starting a first electric push rod 3, clamping the screw shaft 10 between the two pressing blocks 4, embedding the outer side of the screw blade 11 into a limiting groove 12 on a limiting plate 13, then welding one end of the screw blade 11 with the screw shaft 10, finally adjusting the transmission ratio between a driving wheel and a driven wheel of a stepless speed changer 9 according to the welding pitch of the screw blade 11, starting the motor 6 after adjustment, driving the screw shaft 10 to rotate slowly by the motor 6, driving a driving screw rod 7 to rotate by the stepless speed changer 9, the driving screw rod 7 drives the moving block 8 and the limiting plate 13 to move along the axis direction of the spiral shaft 10, when the limiting plate 13 moves, the pitch of the spiral blade 11 can be limited, the corresponding spiral blade 11 and the spiral shaft 10 are subjected to spot welding and fixed according to the moving position of the moving block 8, so that the pitch of the spiral blade 11 is equal in the welding process, after the spot welding is finished, the tool is stopped, the spiral blade 11 can be subjected to full welding, and the welding quality of the spiral blade 11 is improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a tower mill helical blade welding frock which characterized in that: the electric push rod mechanism comprises a bottom plate (1) and side plates (2) arranged on the left side and the right side of the bottom plate (1), wherein a first electric push rod (3) is arranged on the side plate (2) on the left side, a motor (6) is arranged on the side plate (2) on the right side through a connecting plate (5), the output end of the first electric push rod (3) is coaxial with the output end of the motor (6), two pressing blocks (4) are arranged between the two side plates (2), one pressing block (4) is rotatably connected with the output end of the first electric push rod (3), the other pressing block (4) is fixedly connected with the output end of the motor (6), opposite side walls of the two side plates (2) are connected with sliding rods (17), the sliding rods (17) are positioned under the first electric push rod (3), moving blocks (8) are slidably arranged on the sliding rods (17), and driving screw rods (7) are rotatably arranged on opposite side walls of the two side plates (2), the driving screw rod (7) is located between the sliding rod (17) and the first electric push rod (3), the moving block (8) is in threaded connection with the driving screw rod (7), the right end of the driving screw rod (7) is in transmission connection with the output end of the motor (6) through a continuously variable transmission (9), and a limiting plate (13) with a limiting groove (12) in the top is installed at the top end of the moving block (8).

2. The tower mill helical blade welding tool according to claim 1, characterized in that: and a second electric push rod (16) is vertically arranged between the limiting plate (13) and the moving block (8).

3. The tower mill helical blade welding tool of claim 2, characterized in that: the limiting plate (13) comprises a fixing block (130) which is in a convex shape and fixed at the output end of the second electric push rod (16) and a moving plate (131) arranged on the left side and the right side of the fixing block (130), the moving plate (131) and the fixing block (130) form a limiting groove (12), a double-head screw rod (14) transversely penetrates through the fixing block (130), the middle of the double-head screw rod (14) is rotatably connected with the fixing block (130) through a bearing, and two ends of the double-head screw rod (14) are respectively in threaded connection with the moving plate (131).

4. The tower mill helical blade welding tool of claim 3, characterized in that: and rollers (15) are rotatably arranged on the top of the fixed block (130) and the opposite sides of the two moving plates (131).

5. The tower mill helical blade welding tool of claim 1, characterized in that: two the lateral wall in opposite directions of briquetting (4) all is equipped with layer board (18) along radial sliding, layer board (18) are close to briquetting (4) one side is equipped with forked tail slider (19), briquetting (4) go up open have with dovetail (40) of forked tail slider (19) slip orbit looks adaptation, threaded connection has set screw (21) on layer board (18), the one end that the nut was kept away from in set screw (21) with briquetting (4) offset.

6. The tower mill helical blade welding tool of claim 5, characterized in that: the two dovetail grooves (40) are arranged, one side of the pressing block (4) close to the supporting plate (18) is marked with length scales (20), the length scales (20) are distributed along the radial direction of the pressing block (4), and the two dovetail grooves (40) are symmetrically arranged on two sides of the length scales (20).