Full-automatic gluing device for groove lining paper of stator bar of large hydro-generator

Abstract

The utility model provides a large-scale hydro-generator stator bar groove lining paper full-automatic gluing device which comprises an unwinding assembly, a leveling frame, a gluing assembly, a glue brush, a paper clamping barrel, a clamping belt, a cutting assembly and a winding barrel which are sequentially arranged in the groove lining paper unwinding direction, and the gluing assembly comprises a glue barrel and a gluing roller which is arranged at the bottom end of the glue barrel and horizontally rotates. The side wall of the glue coating roller blocks a discharging opening in the bottom end of the glue barrel, a groove is formed in the side wall of the glue coating roller, the clamping belt is in transmission connection with a length measuring wheel, the length measuring wheel is in control connection with the cutting-off assembly, a guiding structure is arranged between the winding barrel and the cutting-off assembly, and a negative pressure pipeline is arranged on the side wall of the winding barrel. According to the utility model, automatic gluing of the groove lining paper is realized, the gluing processing efficiency of the groove lining paper is improved, and the labor cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of stator bar slot liner paper gluing devices, and particularly relates to a full-automatic gluing device for stator bar slot liner paper of a large hydro-generator. Background Art

[0002] At present, when gluing the slot liner paper of the stator bar, a mechanical tooling is used. The mechanical tooling includes a glue application funnel, a clamping pair of wheels, and a winding wheel arranged in sequence along the flow direction of the slot liner paper. Three workers are required for the gluing line of one slot liner paper. One worker controls the feeding of the glue application funnel, one worker further clamps the slot liner paper downstream of the clamping pair of wheels, and one worker winds and cuts the slot liner paper of a fixed length, resulting in low processing efficiency of the slot liner paper gluing and high labor costs.

[0003] Therefore, there is an urgent need for a full-automatic gluing device for stator bar slot liner paper of a large hydro-generator to solve the above problems. Summary of the Invention

[0004] The purpose of the utility model is to overcome the above deficiencies and provide a full-automatic gluing device for stator bar slot liner paper of a large hydro-generator to solve the problems raised in the background art.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a full-automatic gluing device for stator bar slot liner paper of a large hydro-generator, which includes a unwinding assembly, a flattening frame, a gluing assembly, a glue brush, a paper clamping cylinder, a clamping belt, a cutting assembly, and a winding cylinder arranged in sequence along the unwinding direction of the slot liner paper. The gluing assembly includes a glue bucket and a glue application roller horizontally rotating at the bottom end of the glue bucket. The side wall of the glue application roller seals the discharge port at the bottom end of the glue bucket. Grooves are arranged on the side wall of the glue application roller. The clamping belt is drivingly connected with a length measuring wheel, the length measuring wheel is control-connected with the cutting assembly, a guiding structure is arranged between the winding cylinder and the cutting assembly, and a negative pressure pipeline is arranged on the side wall of the winding cylinder.

[0006] Preferably, the unwinding assembly is horizontally rotatably arranged, the winding cylinder is vertically rotatably arranged, and a guiding structure is arranged directly below the winding cylinder. The guiding structure includes a guiding cam and a limiting block. The guiding cam is vertically rotatably arranged, and a torsion spring is connected to the mounting shaft of the guiding cam. The torsion spring connects the guiding cam. A limiting block is arranged on one side of the guiding cam, and there is a gap between the guiding cam and the winding cylinder when the guiding cam contacts the limiting block.

[0007] Preferably, a guiding piece is arranged on the downstream side of the guiding cam. The guiding piece is an arc-shaped piece and is coaxial with the winding cylinder.

[0008] Preferably, the negative pressure pipeline includes a main negative pressure pipe and negative pressure branch pipes connected in parallel to the main negative pressure pipe. Both the main negative pressure pipe and the negative pressure branch pipes are located inside the winding drum. The intake pipes of the negative pressure branch pipes are distributed at equal angles along the axis of the winding drum. One end of the main negative pressure pipe away from the negative pressure branch pipes is located inside the annular seal. An intake pipe is also arranged inside the seal. The intake pipe is coaxially arranged with the main negative pressure pipe. Flange plates are provided at the connection ends of the intake pipe and the main negative pressure pipe.

[0009] Preferably, annular protrusions and annular grooves are respectively provided at the connection ends of the main negative pressure pipe and the intake pipe. The annular protrusion is located inside the annular groove, and the side wall of the annular protrusion fits against the inner side wall of the annular groove.

[0010] Preferably, the clamping belts are arranged in pairs and are respectively located on both sides of the grooved liner paper. The clamping belts are in contact with the open edges of the folded grooved liner paper.

[0011] Preferably, the paper clamping cylinder includes a rectangular frame and a twisted plate connected to the end wall of the frame. The movable end of the twisted plate is horizontally arranged, the fixed end of the twisted plate is vertically arranged, and the twisted plates are symmetrically distributed on both sides of the end wall of the frame.

[0012] The utility model has the following beneficial effects:

[0013] 1. The utility model uses a motor to drive the winding. During the winding process, the already coated grooved liner paper is clamped by clamping belts with the same speed as the winding speed. During the clamping process, the length is measured. After the measured length reaches the set length, the grooved liner paper can be automatically cut off. The cut grooved liner paper can continue to be wound under the push of the measuring belt and under the action of the guiding structure and the re-pressurizing pipeline, so as to realize automatic cutting and automatic winding, improve the efficiency of grooved liner paper coating processing, and reduce labor costs;

[0014] 2. The utility model uses a motor to drive the coating roller to rotate. During the rotation of the coating roller, the glue in the side wall grooves is coated on the grooved liner paper for quantitative glue coating. After the glue coating, the glue is leveled by a glue brush, which can ensure the quality of the glue coating and avoid uneven glue brushing caused by manual control of operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a top view of an embodiment of the utility model;

[0016] Figure 2 is a schematic structural view of the glue coating assembly in an embodiment of the utility model;

[0017] Figure 3 is a schematic structural view of the coating roller in an embodiment of the utility model.

[0018] Figure 4This is a schematic structural diagram of the main negative pressure pipe in the embodiment of the utility model. Detailed implementation mode

[0019] The present utility model will be further described below in conjunction with the drawings and embodiments:

[0020] See Figures 1 to 4 , a fully automatic glue coating device for stator bar slot liner paper of a large hydrogenerator, which includes a unwinding assembly 1, a flattening frame 2, a glue coating assembly 3, a glue brush 4, a paper clamping cylinder 5, a clamping belt 6, a cutting assembly and a winding drum 12 arranged in sequence along the unwinding direction of the slot liner paper. The glue coating assembly 3 includes a glue bucket 3.1 and a glue coating roller 15 horizontally rotating at the bottom of the glue bucket. The side wall of the glue coating roller 15 seals the discharge port at the bottom of the glue bucket. Grooves are arranged on the side wall of the glue coating roller 15. The clamping belt 6 is drivingly connected with a length measuring wheel 7, and the length measuring wheel 7 is controlledly connected with the cutting assembly. A guiding structure is arranged between the winding drum 12 and the cutting assembly, and a negative pressure pipeline is arranged on the side wall of the winding drum 12.

[0021] Preferably, the unwinding assembly 1 is horizontally rotatably arranged, the winding drum 12 is vertically rotatably arranged, and a guiding structure is arranged directly below the winding drum 12. The guiding structure includes a guiding cam 10 and a limiting block 14. The guiding cam 10 is vertically rotatably arranged, and a torsion spring is connected to the mounting shaft of the guiding cam 10. The torsion spring is connected to the guiding cam 10. A limiting block 14 is arranged on one side of the guiding cam 10, and there is a gap between the guiding cam 10 and the winding drum 12 when the guiding cam 10 contacts the limiting block 14.

[0022] Preferably, a guiding piece 11 is arranged on the downstream side of the guiding cam 10. The guiding piece 11 is an arc-shaped piece and is coaxial with the winding drum 12.

[0023] Preferably, the negative pressure pipeline includes a main negative pressure pipe 16 and negative pressure branch pipes 13 connected in parallel to the main negative pressure pipe 16. Both the main negative pressure pipe 16 and the negative pressure branch pipes 13 are located inside the winding drum 12. The intake pipes of the negative pressure branch pipes 13 are evenly distributed at equal angles along the axis of the winding drum 12. One end of the main negative pressure pipe 16 away from the negative pressure branch pipes 13 is located inside an annular sealing sleeve 17. An intake pipe 18 is also arranged inside the sealing sleeve 17. The intake pipe 18 is coaxially arranged with the main negative pressure pipe 16. Flange plates are arranged at the connection ends of the intake pipe 18 and the main negative pressure pipe 16.

[0024] Preferably, annular protrusions 19 and annular grooves 20 are respectively arranged at the connection ends of the main negative pressure pipe 16 and the intake pipe 18. The annular protrusion 19 is located inside the annular groove 20, and the side wall of the annular protrusion 19 fits with the inner side wall of the annular groove 20. The sealing performance between the main negative pressure pipe 16 and the intake pipe 18 can be improved.

[0025] Preferably, the clamping belts 6 are arranged in pairs and are respectively located on both sides of the groove liner paper. The clamping belts 6 are in contact with the open edges of the folded groove liner paper. The clamping belts 6 only clamp the open edges of the groove liner paper, and will not squeeze out the glue inside the groove liner paper due to the clamping of the groove liner paper, and ensure that the clamping belts 6 can stably transport the groove liner paper.

[0026] Preferably, the paper clamping cylinder 5 includes a rectangular frame 5.1 and a twisted plate 5.2 connected to the end wall of the frame. The movable end of the twisted plate 5.2 is horizontally arranged, the fixed end of the twisted plate 5.2 is vertically arranged, and the twisted plates 5.2 are symmetrically distributed on both sides of the end wall of the frame 5.1. When the groove liner paper passes through the paper clamping cylinder 5, the two sides of the groove liner paper are moved upward through the twisted plate 5.2, and the middle part of the groove liner paper is kept still, and the groove liner paper is folded. Using the twisted plate 5.2 as the folding transition section can avoid damage to the groove liner paper when the downstream pulls the groove liner paper for folding in half.

[0027] The working principle of this embodiment is as follows:

[0028] The unwinding assembly 1 is horizontally rotatably arranged, and the leveling frame 2 is arranged on one side of the unwinding assembly 1. The leveling frame 2 includes a pressure roller at the top and a support table at the bottom. The pressure roller is horizontally rotatably arranged, and a gap for the groove liner paper to pass through is provided between the pressure roller and the support table. The leveling frame 2 is used to ensure that the output groove liner paper is in a flat and vertical state, which is convenient for subsequent folding in half;

[0029] The glue coating assembly 3 is connected to an external glue bucket through a pipeline, and a glue pump is installed on the pipeline for replenishing glue into the glue coating assembly 3. The staff controls the glue pump according to the liquid level of the glue in the glue coating assembly 3;

[0030] The top of the glue coating roller 15 seals the bottom end of the feeding hopper in the glue coating assembly 3. The glue coating roller 15 is driven to rotate by a motor, and the glue will enter the grooves on the side wall of the glue coating roller 15 and fall on the groove liner paper during the rotation of the glue coating roller 15;

[0031] After the cutting assembly cuts the groove liner paper, the clamping belts 6 continue to transport the groove liner paper. Due to the gap between the guiding cam 10 and the winding drum 12, the groove liner paper passes through between the guiding cam 10 and the winding drum 12. Under the action of the negative pressure pipeline, the groove liner paper is adsorbed on the outer side wall of the winding drum 12. As the output shaft of the motor drives the winding drum 12 to rotate, the groove liner paper is wound. During the process of the winding drum 12 continuing to wind the groove liner paper, the thickness of the groove liner paper on the outer side of the winding drum 12 increases, pressing down on the guiding cam 10. As the guiding cam 10 rotates around the mounting shaft, under the action of the torsion spring, the guiding cam 10 tightly presses the groove liner paper wound on the winding drum 12 to ensure the tightness of the groove liner paper winding;

[0032] After the slot liner paper reaches a certain length, the slot liner paper is cut off. The staff closes the drive motor of the negative pressure pipeline and the take-up reel 12, removes the wound slot liner paper. The guiding cam 10 loses the extrusion of the slot liner paper and rotates back under the action of the torsion spring. During the rotation of the guiding cam 10, it contacts the limit block 14 under the action of the limit block 14, and a gap for the slot liner paper to pass through is reserved.

[0033] During the process of the clamping belt 6 continuing to convey the slot liner paper, after the slot liner paper passes through the gap between the guiding cam 10 and the take-up reel 12, the guiding piece 11 makes the slot liner paper tilt towards the direction of the take-up reel 12, which can prevent the slot liner paper from being conveyed to the take-up reel 12 when the negative pressure pipeline fails to adsorb the slot liner paper, facilitating winding. When the motor drives the take-up reel 12 to rotate, the negative pressure main pipe 16 rotates accordingly. By utilizing the cooperation between the negative pressure main pipe 16 and the end of the suction pipe 18, it can ensure adsorption while meeting the rotation requirement of the negative pressure main pipe 16.

[0034] The above embodiments are only the preferred technical solutions of the present invention and should not be regarded as limitations on the present invention. The protection scope of the present invention should be the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, the equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A fully automatic gluing device for stator bar slot lining paper of a large hydro-turbine generator, characterized in that: The invention comprises an unwinding assembly (1), a leveling frame (2), a gluing assembly (3), a glue brush (4), a paper clamping drum (5), a clamping belt (6), a cutting assembly and a winding drum (12) which are sequentially arranged along the unwinding direction of the slot lining paper. The gluing assembly (3) comprises a glue barrel (3.1) and a gluing roller (15) which is arranged at the bottom end of the glue barrel and rotates horizontally. The side wall of the gluing roller (15) blocks the discharge port at the bottom end of the glue barrel. A groove is arranged on the side wall of the gluing roller (15). The clamping belt (6) is drivingly connected to a length measuring wheel (7). The length measuring wheel (7) is controllably connected to the cutting assembly. A guide structure is arranged between the winding drum (12) and the cutting assembly. A negative pressure pipeline is arranged on the side wall of the winding drum (12).

2. According to claim 1, a large-scale hydro-generator stator bar slot lining paper fully automatic gluing device is characterized in that: The unwinding assembly (1) is arranged to rotate horizontally, and the winding drum (12) is arranged to rotate vertically. A guide structure is provided directly below the winding drum (12), and the guide structure comprises a guide cam (10) and a limit block (14). The guide cam (10) is arranged to rotate vertically, and a torsion spring is connected to the installation shaft of the guide cam (10), and the torsion spring is connected to the guide cam (10). A limit block (14) is provided on one side of the guide cam (10), and when the guide cam (10) contacts the limit block (14), a gap is provided between the guide cam (10) and the winding drum (12).

3. The fully automatic gluing device for stator bar slot lining paper of a large hydro-turbine generator according to claim 2 is characterized in that: A guide piece (11) is provided on the downstream side of the guide cam (10); the guide piece (11) is an arc-shaped piece, and the guide piece (11) is coaxial with the winding drum (12).

4. The fully automatic gluing device for stator bar slot lining paper of a large hydro-turbine generator according to claim 1 is characterized in that: The negative pressure pipeline comprises a negative pressure main pipe (16) and a negative pressure branch pipe (13) connected in parallel to the negative pressure main pipe (16); the negative pressure main pipe (16) and the negative pressure branch pipe (13) are both located on the inner side of the winding drum (12); the air inlet pipe of the negative pressure branch pipe (13) is distributed at equal angles along the axis of the winding drum (12); the end of the negative pressure main pipe (16) away from the negative pressure branch pipe (13) is located in an annular sealing sleeve (17); an air intake pipe (18) is also provided in the sealing sleeve (17); the air intake pipe (18) is coaxially arranged with the negative pressure main pipe (16); and flange plates are provided at the connecting ends of the air intake pipe (18) and the negative pressure main pipe (16).

5. The fully automatic gluing device for stator bar slot lining paper of a large hydro-turbine generator according to claim 4 is characterized in that: The connecting ends of the negative pressure main pipe (16) and the air intake pipe (18) are respectively provided with an annular protrusion (19) and an annular groove (20); the annular protrusion (19) is located in the annular groove (20), and the side wall of the annular protrusion (19) is in contact with the inner side wall of the annular groove (20).

6. The fully automatic gluing device for stator bar slot lining paper of a large hydro-turbine generator according to claim 1 is characterized in that: The clamping belts (6) are arranged in pairs, and the clamping belts (6) are respectively located on both sides of the slot lining paper, and the clamping belts (6) are in contact with the opening edge of the slot lining paper after being folded in half.

7. The fully automatic gluing device for stator bar slot lining paper of a large hydro-turbine generator according to claim 1 is characterized in that: The paper clamping cylinder (5) comprises a frame (5.1) in a rectangular structure and a twisting plate (5.2) connected to the end wall of the frame, the movable end of the twisting plate (5.2) is arranged horizontally, the fixed end of the twisting plate (5.2) is arranged vertically, and the twisting plates (5.2) are symmetrically distributed on both sides of the end wall of the frame (5.1).

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