Transformer insulation pad processing equipment

Abstract

Transformer insulation pad processing equipment relates to a device for processing transformer insulation pads. It is mainly designed to solve the problems of poor quality and low efficiency of current punching insulation pads. It consists of a feeding mechanism and a cutting mechanism; the feeding mechanism includes a frame, a conveying roller, a lower active roller and an upper pressure roller, etc. The slider and the first nut of the clamping frame are installed in conjunction with the transverse slide rail and the first lead screw of the machine base. The slider and the second nut of the front chassis are installed in conjunction with the longitudinal slide rail and the second lead screw on the machine base; the slider and the third nut of the rear chassis are installed in conjunction with the vertical slide rail and the third lead screw of the front chassis; the fourth nut on the top of the circular saw is installed in conjunction with the fourth lead screw of the rear chassis; there are two front milling cutters and two rear milling cutters in the rear chassis on the right side of the partition, and the front milling cutters and the rear milling cutters are connected to the connecting beam through a connecting arm, and the connecting beam is connected to the cylinder rod of the milling cutter lifting hydraulic cylinder, and the milling cutter lifting hydraulic cylinder is fixed on the top of the rear chassis. The advantages are fast production speed and good product quality.

Description

Technical Field

[0001] The invention relates to equipment for processing transformer insulating spacers. Background Art

[0002] With the development of the electric power industry, power transformers are developing towards high voltage, ultra-high voltage and large capacity. The coil assembly is a key component of the transformer and plays an important role in the performance of the transformer. The insulating pads are distributed between the layers of the coil. Their quality has a great influence on the electric field distribution and insulation performance of the transformer, and is related to the partial discharge, creepage or interlayer short circuit of the transformer. It is a key part of the transformer.

[0003] At present, the insulating spacers of transformer coils are usually made by punching insulating strips. The cuts of the punched insulating spacers are rough and have many burrs. It is difficult to clean and polish the cuts, resulting in slow production speed, low efficiency and poor product quality.

[0004] The labor intensity is high, and workers need to continuously feed strips for punching. After punching, the insulating pads and material heads are scattered into the collection box, which needs to be sorted manually. The material heads are picked out and the qualified insulating pads are sorted into a stack according to the front and back sides and put into the material box. The use of punched insulating pads is no longer allowed for transformers of 500kV and above. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a transformer insulating spacer processing equipment with high production speed, high working efficiency, reduced labor intensity of workers and good processed product quality.

[0006] The above objects are achieved in this way: it is composed of a feeding mechanism and a cutting mechanism;

[0007] The feeding mechanism includes a frame, and several conveying rollers are installed on the top of the rear half of the frame through shafts; the active roller control motor is fixed on the frame, and a pulley is installed on the shaft of the lower active roller, and the pulley on the shaft of the lower active roller is connected with the pulley on the shaft of the active roller control motor through a belt; there is an upper pressure roller above the lower active roller, and the upper pressure roller is installed on the upper pressure roller bracket through a shaft, and the upper pressure roller bracket is connected with the cylinder rod of the upper pressure roller control hydraulic cylinder, and the cylinder body of the upper pressure roller control hydraulic cylinder is fixed on the hydraulic cylinder bracket, and the lower end of the hydraulic cylinder bracket is fixed on the frame. Side baffles are fixed on the frames on both sides of the lower active roller.

[0008] The cutting mechanism is arranged in front of the feeding mechanism;

[0009] The cutting mechanism includes a machine base, a clamping frame control motor is fixed on the left end of the machine base, two horizontal slide rails arranged in the left and right directions are fixed on the rear end of the machine base, and two sliders at the front end of the clamping frame are respectively installed in cooperation with the two horizontal slide rails on the machine base; the right end of the first lead screw is installed on the machine base through a bearing, and a pulley is fixed on the left end of the first lead screw, and the pulley of the first lead screw is connected with the pulley on the output shaft of the clamping frame control motor through a belt; the first nut on the clamping frame is installed in cooperation with the first lead screw; the working power of the clamping frame control motor can drive the clamping frame to move left and right on the machine base; the lower support plate control hydraulic cylinder is fixed on the clamping frame, the cylinder rod of the lower support plate control hydraulic cylinder is facing upward, and the lower support plate is fixed on the cylinder rod of the lower support plate control hydraulic cylinder; there is an upper support plate above the lower support plate, and the upper support plate is fixed on the clamping frame.

[0010] Two longitudinal slide rails arranged along the front-to-back direction are arranged on the top of the machine base, a front chassis movement control motor is fixed on the top of the machine base between the two longitudinal slide rails, a second lead screw is installed on the top of the machine base through a bearing, a rear end of the second lead screw is connected to an output shaft of the front chassis movement control motor, a front machine base is arranged above the machine base, two sliders at the bottom of the front machine base are respectively installed in cooperation with the two longitudinal slide rails at the top of the machine base, a second nut at the bottom of the front machine base is installed in cooperation with the second lead screw on the machine base, and the front machine base movement control motor works to drive the front machine base to move forward and backward on the machine base;

[0011] Two vertical slide rails arranged in the up-down direction are fixed on the rear side of the front chassis, the third lead screw is installed on the rear side of the front chassis between the two vertical slide rails through a bearing, the two sliders on the front side of the rear chassis are respectively installed in cooperation with the two vertical slide rails, the third nut on the front side of the rear chassis is installed in cooperation with the third lead screw on the rear side of the front chassis, the rear chassis lifting control motor is fixed on the top of the rear side of the front chassis, and the output shaft of the rear chassis lifting control motor is connected to the third lead screw; the rear chassis lifting control motor can drive the rear chassis to do lifting movement on the front chassis when it works;

[0012] A circular saw is arranged above the material clamping frame, a fourth nut is fixed on the top of the circular saw, a moving motor of the circular saw is fixed on the left end of the rear chassis, a fourth lead screw is arranged on the left part inside the rear chassis, the left end of the fourth lead screw is connected to the output shaft of the moving motor of the circular saw, the right end of the fourth lead screw is connected to the partition inside the rear chassis through a bearing, the fourth nut on the top of the circular saw is installed in coordination with the fourth lead screw, a transverse long hole is arranged on the rear side surface of the rear chassis, the rear end of the body of the circular saw is exposed from the transverse long hole of the rear chassis and the body of the circular saw is in sliding contact with the upper edge and the lower edge of the transverse long hole, that is, the shaft and the circular saw blade at the rear end of the circular saw are both located outside the rear chassis, and the working of the moving motor of the circular saw drives the fourth lead screw to rotate, thereby driving the circular saw to move left and right inside the rear chassis; there is an opening at the bottom of the rear chassis on the right side of the partition; a front right milling cutter, a front left milling cutter, a rear right milling cutter and a rear left milling cutter are arranged in the rear chassis on the right side of the partition;

[0013] The front right milling cutter and the front left milling cutter are respectively arranged opposite to the rear right milling cutter and the rear left milling cutter;

[0014] The front right milling cutter and the rear right milling cutter are both installed on their respective connecting arms, the upper ends of the two connecting arms are fixed with connecting beams, the cylinder body of the right milling cutter lifting hydraulic cylinder is fixed on the top of the rear chassis, and the cylinder rod of the right milling cutter lifting hydraulic cylinder is fixed on the connecting beam. When the right milling cutter lifting hydraulic cylinder works, it can drive the front right milling cutter and the rear right milling cutter to rise or fall, and when the two milling cutters are lowered, they can be exposed from the opening at the bottom of the rear chassis;

[0015] The front left milling cutter and the rear left milling cutter are both installed on their respective connecting arms, and connecting beams are also fixed at the upper ends of the two connecting arms. The cylinder body of the left milling cutter lifting hydraulic cylinder is fixed on the top of the rear chassis, and the cylinder rod of the left milling cutter lifting hydraulic cylinder is fixed on the connecting beam. The operation of the left milling cutter lifting hydraulic cylinder can drive the front left milling cutter and the rear left milling cutter to rise or fall, and when the two milling cutters are lowered, they can be exposed from the opening at the bottom of the rear chassis.

[0016] The advantages of the present invention are: fast production speed, high work efficiency. According to tests, the work efficiency can be increased by more than 3 times, and the labor intensity is reduced. After the processing is completed, the insulating spacers do not need to be sorted when they are collected. They are naturally stacked and put into the material box. The surface and notch of the insulating spacers are smooth and free of burrs, and the product quality is good. The requirements of 500kV and above transformers on the quality of insulating spacers are met. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the main structure of the feeding mechanism in the present invention;

[0019] Figure 3 It is a left-side structural schematic diagram of the feeding mechanism in the present invention;

[0020] Figure 4 It is a schematic diagram of the main structure of the cutting mechanism in the present invention;

[0021] Figure 5 yes Figure 4 AA view;

[0022] Figure 6 It is a schematic diagram of the top view of the cutting mechanism in the present invention;

[0023] Figure 7 yes Figure 6 BB view. DETAILED DESCRIPTION

[0024] Combine the following Figure 1-7 The present invention is further described;

[0025] It consists of a feeding mechanism 1 and a cutting mechanism 2;

[0026] The feeding mechanism includes a frame 1-1, and several conveying rollers 1-2 are installed on the top of the rear half of the frame through shafts; the active roller control motor 1-3 is fixed on the frame, and a pulley is installed on the shaft of the lower active roller 1-4, and the pulley on the shaft of the lower active roller is connected with the pulley on the shaft of the active roller control motor through a belt; there is an upper pressure roller 1-5 above the lower active roller, and the upper pressure roller is installed on the upper pressure roller bracket 1-6 through a shaft, and the upper pressure roller bracket is connected with the cylinder rod of the upper pressure roller control hydraulic cylinder 1-7, and the cylinder body of the upper pressure roller control hydraulic cylinder is fixed on the hydraulic cylinder bracket 1-8, and the lower end of the hydraulic cylinder bracket is fixed on the frame. Side baffles 1-9 are fixed on the top of the frame on both sides of the lower active roller. Place several insulating slats upright (i.e., with the sides of the slats facing downward) on the lower active roller and the conveying roller, with both sides of the insulating slats in contact with the side baffles. The upper pressure roller controls the hydraulic cylinder to drive the upper pressure roller downward so that the upper pressure roller contacts the top of the insulating slats. The lower active roller controls the motor to drive the insulating slats forward.

[0027] The cutting mechanism is arranged in front of the feeding mechanism;

[0028] The cutting mechanism includes a machine base 2-1, a clamping frame control motor 2-2 is fixed at the left end of the machine base, two horizontal slide rails 2-3 arranged in the left and right directions are fixed at the rear end of the machine base, and two sliders at the front end of the clamping frame 2-4 are respectively installed in cooperation with the two horizontal slide rails on the machine base; the right end of the first lead screw 2-5 is installed on the machine base through a bearing, and a pulley is fixed at the left end of the first lead screw, and the pulley of the first lead screw is connected to the pulley on the output shaft of the clamping frame control motor through a belt; the first screw nut 2-6 on the clamping frame Installed in conjunction with the first lead screw; the clamping frame control motor can drive the clamping frame to move left and right on the machine base; the lower pallet control hydraulic cylinder 2-7 is fixed on the clamping frame, the cylinder rod of the lower pallet control hydraulic cylinder is facing upward, and the lower pallet 2-8 is fixed on the cylinder rod of the lower pallet control hydraulic cylinder; there is an upper pallet 2-9 above the lower pallet, and the upper pallet is fixed on the clamping frame. The front end of the workpiece enters the clamping frame from the feeder, and the lower pallet control hydraulic cylinder works to drive the lower pallet to move upward, so that the lower pallet contacts the lower end surface of the workpiece.

[0029] Two longitudinal slide rails 2-10 are arranged along the front-back direction on the top of the machine base, a front chassis movement control motor 2-11 is fixed on the top of the machine base between the two longitudinal slide rails, a second lead screw 2-12 is installed on the top of the machine base through a bearing, and the rear end of the second lead screw is connected to the output shaft of the front chassis movement control motor, a front chassis 2-13 is arranged above the machine base, two sliders at the bottom of the front chassis are respectively installed in cooperation with the two longitudinal slide rails on the top of the machine base, a second nut 2-14 at the bottom of the front chassis is installed in cooperation with the second lead screw on the machine base, and the front chassis movement control motor works to drive the front chassis to move forward and backward on the machine base;

[0030] Two vertical slide rails 2-15 arranged in the up-down direction are fixed on the rear side of the front chassis, the third lead screw 2-16 is installed on the rear side of the front chassis between the two vertical slide rails through a bearing, the two sliders on the front side of the rear chassis 2-17 are respectively installed in cooperation with the two vertical slide rails, the third nut 2-18 on the front side of the rear chassis is installed in cooperation with the third lead screw on the rear side of the front chassis, the rear chassis lifting control motor 2-19 is fixed on the top of the rear side of the front chassis, and the output shaft of the rear chassis lifting control motor is connected to the third lead screw; the rear chassis lifting control motor can drive the rear chassis to do lifting movement on the front chassis when it works;

[0031] A circular saw 2-20 is provided above the material clamping frame, a fourth nut 2-21 is fixed on the top of the circular saw, a circular saw moving motor 2-22 is fixed on the left end of the rear chassis, a fourth lead screw 2-23 is provided on the left part of the rear chassis, the left end of the fourth lead screw is connected to the output shaft of the circular saw moving motor, the right end of the fourth lead screw is connected to the partition 2-24 in the rear chassis through a bearing, the fourth nut on the top of the circular saw is installed in coordination with the fourth lead screw, a transverse long hole is provided on the rear side surface of the rear chassis, the rear end of the circular saw body is exposed from the transverse long hole of the rear chassis and the body of the circular saw is in sliding contact with the upper edge and the lower edge of the transverse long hole, that is, the shaft and the circular saw blade located at the rear end of the circular saw are both located outside the rear chassis, and the circular saw moving motor drives the fourth lead screw to rotate when it works, thereby driving the circular saw to move left and right in the rear chassis;

[0032] There is an opening at the bottom of the rear case on the right side of the partition; inside the rear case on the right side of the partition are a front right milling cutter 2-25, a front left milling cutter 2-26, a rear right milling cutter 2-27, and a rear left milling cutter 2-28;

[0033] The front right milling cutter and the front left milling cutter are respectively arranged opposite to the rear right milling cutter and the rear left milling cutter;

[0034] The front right milling cutter and the rear right milling cutter are both installed on their respective connecting arms 2-29, and the upper ends of the two connecting arms are fixed with connecting beams 2-30. The cylinder body of the right milling cutter lifting hydraulic cylinder 2-31 is fixed on the top of the rear chassis, and the cylinder rod of the right milling cutter lifting hydraulic cylinder is fixed on the connecting beam. The right milling cutter lifting hydraulic cylinder can drive the front right milling cutter and the rear right milling cutter to rise or fall when working, and when the two milling cutters are lowered, they can be exposed from the opening at the bottom of the rear chassis;

[0035] The front left milling cutter and the rear left milling cutter are both installed on their respective connecting arms, and connecting beams are also fixed to the upper ends of the two connecting arms. The cylinder body of the left milling cutter lifting hydraulic cylinder 2-32 is fixed on the top of the rear chassis, and the cylinder rod of the left milling cutter lifting hydraulic cylinder is fixed on the connecting beam. The operation of the left milling cutter lifting hydraulic cylinder can drive the front left milling cutter and the rear left milling cutter to rise or fall, and when the two milling cutters are lowered, they can be exposed from the opening at the bottom of the rear chassis.

[0036] The working process of the present invention is as follows: a plurality of insulating strips 3 are placed upright (i.e., the side edges of the strips face downward) on the lower active roller and the conveying roller, the two sides of the insulating strips are in contact with the two side baffles respectively, the upper pressure roller controls the hydraulic cylinder to work to drive the upper pressure roller to move downward, so that the upper pressure roller contacts the top of the insulating strips, and the lower active roller controls the motor to work to drive the insulating strips to move forward. At this time, the clamping frame controls the motor to work so that the clamping frame is directly in front of the upper pressure roller and the active roller, and under the drive of the active roller and the upper pressure roller, the insulating strips enter the clamping frame from the feeding mechanism and the front end of the insulating strips is located in front of the upper support plate and the lower support plate, and at the same time, the upper end of the insulating strips contacts the upper support plate, the lower active roller controls the motor to stop working, and the lower support plate controls the hydraulic cylinder to work to drive the lower support plate to move upward, so that the lower support plate contacts the lower end of the insulating strips.

[0037] Adjust the position of the circular saw: the front chassis movement control motor works to drive the front chassis to move on the machine base, so that the circular saw is located behind the clamping rack; the circular saw movement motor works to drive the circular saw to move to the left end of the workpiece, and the rear chassis lifting control motor works to drive the circular saw downward, so that the saw blade of the circular saw is aligned with the insulating strips behind the upper and lower pallets, and the circular saw and the circular saw movement motor work to make the circular saw cut the insulating strips from left to right.

[0038] The material holder control motor works to drive the material holder to move rightward to the left side of the milling cutter. The left milling cutter lifting hydraulic cylinder works to drive the front left milling cutter and the rear left milling cutter to move downward and emerge from the bottom of the rear chassis. The front chassis movement control motor works to drive the front chassis to move and adjust the front and rear positions of the front left milling cutter. The left milling cutter lifting hydraulic cylinder works to adjust the height of the left milling cutter. The material holder control motor continues to work to make the material holder continue to move rightward, so that the front left milling cutter cuts a groove on the front side of the insulating strip. Then the front chassis movement control motor works to adjust the position of the rear left milling cutter. The material holder control motor rotates in the opposite direction to move the material holder to the left. While moving, the rear left milling cutter cuts a groove on the rear side of the workpiece. Then the front left milling cutter and the rear left milling cutter rise, and the front right milling cutter and the rear right milling cutter fall. Similarly, the position of the front right milling cutter is adjusted by the front chassis movement control motor and the right milling cutter lifting hydraulic cylinder. The material holder control motor works to move the material holder to the right, and the front right milling cutter mills a chamfer at the corner of the insulating strip. The position of the rear right milling cutter is adjusted by moving the control motor of the front chassis, and the control motor of the clamping frame works in the reverse direction to move the clamping frame to the left, so that the rear right milling cutter mills a chamfer at the corner on the other side of the workpiece. Finally, the control motor of the clamping frame drives the clamping frame back to the front of the feeding mechanism, and the worker holds the left and right ends of the workpiece. The lower support plate controls the cylinder rod of the hydraulic cylinder to retract, and the worker takes out the workpiece. After that, the feeding mechanism continues to transport the insulating strips into the clamping frame, and so on.

Claims

1. Transformer insulation pad processing equipment, characterized by: It consists of a feeding mechanism (1) and a cutting mechanism (2); The feeding mechanism comprises a frame (1-1), a plurality of conveying rollers (1-2) are mounted on the top of the rear half of the frame via shafts; an active roller control motor (1-3) is fixed on the frame, a pulley is mounted on the shaft of a lower active roller (1-4), and the pulley on the shaft of the lower active roller is connected to the pulley on the shaft of the active roller control motor via a belt; an upper pressure roller (1-5) is arranged above the lower active roller, the upper pressure roller is mounted on an upper pressure roller bracket (1-6) via a shaft, the upper pressure roller bracket is connected to the cylinder rod of an upper pressure roller control hydraulic cylinder (1-7), the cylinder body of the upper pressure roller control hydraulic cylinder is fixed on a hydraulic cylinder bracket (1-8), and the lower end of the hydraulic cylinder bracket is fixed on the frame; The cutting mechanism is arranged in front of the feeding mechanism; The cutting mechanism comprises a machine base (2-1), a material clamping frame control motor (2-2) is fixed at the left end of the machine base, two transverse slide rails (2-3) arranged in the left and right directions are fixed at the rear end of the machine base, and two sliders at the front end of the material clamping frame (2-4) are respectively mounted in cooperation with the two transverse slide rails on the machine base; the right end of the first lead screw (2-5) is mounted on the machine base via a bearing, a pulley is fixed at the left end of the first lead screw, and the pulley of the first lead screw is connected to the pulley on the output shaft of the material clamping frame control motor via a belt; the first nut (2-6) on the material clamping frame is mounted in cooperation with the first lead screw; the lower support plate control hydraulic cylinder (2-7) is fixed on the material clamping frame, the cylinder rod of the lower support plate control hydraulic cylinder faces upward, and the lower support plate (2-8) is fixed on the cylinder rod of the lower support plate control hydraulic cylinder; an upper support plate (2-9) is provided above the lower support plate, and the upper support plate is fixed on the material clamping frame; Two longitudinal slide rails (2-10) are arranged along the front-back direction on the top of the machine base, a front chassis movement control motor (2-11) is fixed on the top of the machine base between the two longitudinal slide rails, a second lead screw (2-12) is installed on the top of the machine base through a bearing, a rear end of the second lead screw is connected to the output shaft of the front chassis movement control motor, a front chassis (2-13) is arranged above the machine base, two sliders at the bottom of the front chassis are respectively installed in cooperation with the two longitudinal slide rails at the top of the machine base, and a second nut (2-14) at the bottom of the front chassis is installed in cooperation with the second lead screw on the machine base; Two vertical slide rails (2-15) arranged in the up-down direction are fixed on the rear side of the front chassis, the third lead screw (2-16) is installed on the rear side of the front chassis between the two vertical slide rails through a bearing, two sliders on the front side of the rear chassis (2-17) are respectively installed in cooperation with the two vertical slide rails, the third nut (2-18) on the front side of the rear chassis is installed in cooperation with the third lead screw on the rear side of the front chassis, the rear chassis lifting control motor (2-19) is fixed on the top of the rear side of the front chassis, and the output shaft of the rear chassis lifting control motor is connected to the third lead screw; A circular saw (2-20) is provided above the material clamping frame, a fourth nut (2-21) is fixed on the top of the circular saw, a circular saw moving motor (2-22) is fixed at the left end of the rear chassis, a fourth lead screw (2-23) is provided on the left portion of the rear chassis, the left end of the fourth lead screw is connected to the output shaft of the circular saw moving motor, the right end of the fourth lead screw is connected to the partition (2-24) in the rear chassis via a bearing, the fourth nut on the top of the circular saw is mounted in coordination with the fourth lead screw, a transverse long hole is provided on the rear side surface of the rear chassis, the rear end of the circular saw body is exposed from the transverse long hole of the rear chassis, and the body of the circular saw is in sliding contact with the upper edge and the lower edge of the transverse long hole, that is, the shaft and the circular saw blade located at the rear end of the circular saw are both located outside the rear chassis; The bottom of the rear case on the right side of the partition is provided with an opening; the rear case on the right side of the partition contains a front right milling cutter (2-25), a front left milling cutter (2-26), a rear right milling cutter (2-27), and a rear left milling cutter (2-28); The front right milling cutter and the front left milling cutter are respectively arranged opposite to the rear right milling cutter and the rear left milling cutter; The front right milling cutter and the rear right milling cutter are both mounted on their respective connecting arms (2-29), the upper ends of the two connecting arms are fixed with connecting beams (2-30), the cylinder body of the right milling cutter lifting hydraulic cylinder (2-31) is fixed on the top of the rear chassis, and the cylinder rod of the right milling cutter lifting hydraulic cylinder is fixed on the connecting beam; The front left milling cutter and the rear left milling cutter are both mounted on their respective connecting arms, and connecting beams are also fixed to the upper ends of the two connecting arms. The cylinder body of the left milling cutter lifting hydraulic cylinder (2-32) is fixed to the top of the rear chassis, and the cylinder rod of the left milling cutter lifting hydraulic cylinder is fixed to the connecting beam.

2. The transformer insulating spacer processing equipment according to claim 1 is characterized in that: Side baffles (1-9) are fixed to the top of the frame on both sides of the lower active roller.

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