CN207982175U - An automatic wire cutting device for winding machines used in the production of current transformers - Google Patents

Abstract

The utility model discloses an automatic thread cutting device of a winding machine for current transformer production, which comprises a thread cutting mounting seat, wherein both ends of the thread cutting mounting seat are provided with thread passing frames, the thread passing mounting plate is arranged on the thread passing frames, a thread passing cylinder is arranged on the thread passing mounting plate, a cutter fixing seat is arranged above the thread cutting mounting seat, a cutter driving cylinder is arranged on the cutter fixing seat, the output end of the cutter driving cylinder vertically downwards passes through the cutter fixing seat and is connected with the cutter mounting seat, the end surface of the lower end surface of the cutter mounting seat is provided with a cutter, two thread cutting seats are arranged between the two thread passing frames, a thread cutting groove is arranged between the two thread cutting seats, the cutter is just opposite to the thread cutting groove, both sides of the cutter are provided with fixed telescopic cylinders, the upper end of each fixed telescopic cylinder is fixedly connected with the cutter mounting seat, fixed rods are arranged in, the lines that kick-back and wind into a roll after the lines cutting is accomplished are prevented from loosening.

Description

An automatic wire cutting device for winding machines used in the production of current transformers

technical field

The utility model relates to the technical field of automatic winding, in particular to an automatic cutting device for winding machines used in the production of current transformers.

Background technique

A current transformer is an instrument that converts a large current on the primary side into a small current on the secondary side for measurement based on the principle of electromagnetic induction. A current transformer consists of a closed core and windings. Its primary side winding has few turns and is connected in series with the current line to be measured. Therefore, it often has all the current of the line flowing, and the number of turns of the secondary side winding is relatively large. It is connected in series with the measuring instrument and the protection circuit. When the current transformer is working, its secondary side circuit is always closed, so the measurement The impedance of the series coil of the instrument and the protection circuit is very small, and the working state of the current transformer is close to a short circuit. The current transformer converts the large current on the primary side into a small current on the secondary side for measurement, and the secondary side cannot be opened.

In recent years, with the continuous advancement of science and technology, the technical requirements for automatic winding machines in all walks of life have been further improved, and there are certain disadvantages while they are constantly improving. For example, the existing automatic winding machines are winding more When stranding the thread, it cannot automatically tear off the starting thread and the excess wire, and can only be cut off manually by the staff, which greatly reduces the overall production efficiency of the winding machine and increases the workload of the workers. Secondly, because the thread is being cut It was in a tight state before, so at the moment of cutting, the thread will rebound quickly, which will cause the thread wound into a roll to loosen. Again, after the thread is cut, the operator should hold the thread lead on the winding machine and wait The winding of the next stator not only consumes manpower, but also affects production efficiency.

Contents of the invention

In order to overcome the deficiencies of the existing technical solutions, the utility model provides a wire cutting machine that can automatically cut the wire, reduce labor costs, and at the same time improve the accuracy of the wire cutting, prevent the wire from rebounding after the wire is cut and the wire that is wound into a roll is loosened. The automatic wire cutting device of the winding machine produced by the current transformer can effectively solve the problems raised by the background technology.

The technical scheme that the utility model solves its technical problem adopts is:

An automatic thread cutting device for a winding machine used in the production of current transformers, comprising a thread cutting mounting seat, two ends of the thread cutting mounting seat are provided with a thread passing frame, and the thread threading frame is provided with a thread passing installation plate. A thread barrel is arranged on the thread-passing mounting plate, a cutter fixing seat is arranged above the thread-cutting mounting seat, a cutter driving cylinder is arranged on the cutter fixing seat, and the output end of the cutter driving cylinder is vertically passing through the cutter fixing seat and connected to the cutter mounting seat, the lower end surface of the cutter mounting seat is provided with a cutter;

Two thread cutting seats are arranged between the two thread passing frames, and there is a thread cutting groove between the two thread cutting seats. , the upper end of the fixed telescopic cylinder is fixedly connected with the cutter installation seat, a fixed rod is arranged in the fixed telescopic cylinder, and a buffer spring is arranged between the upper end of the fixed rod and the fixed telescopic cylinder.

Further, the wire passing installation plate is provided with a wire passing installation hole, and the wire passing barrel is detachably screwed into the wire passing installation hole.

Further, a fixing bracket is provided between the two ends of the cutter fixing seat and the tangent installation seat.

Further, the lower ends of the two fixing rods respectively correspond to two tangent seats.

Further, the lower end of the fixing rod is provided with a pressing pad made of rubber, and the lower end surface of the pressing pad is a concave arc surface.

Compared with the prior art, the beneficial effects of the utility model are:

(1) The utility model is provided with a cutter and a cutter driving cylinder. When the automatic thread cutting device is actually used, the line to be cut passes directly below the cutter, and the cutter drives the cylinder to drive the cutter to move vertically downwards, and the Line cutting, the above-mentioned Huocheng can be carried out automatically, without manpower cutting lines, reducing labor and labor saving, and reducing labor costs;

(2) The utility model sets two tangent seats and two fixed rods, the tangent groove between the two tangent seats is located directly below the cutter, and the line to be cut passes through the area between the tangent seats and the fixed rods. When the cutter goes down, the fixed rod also goes down, so that the fixed rod presses the thread on the thread cutting seat, so that the thread cannot move when it is cut, which improves the accuracy of thread cutting, and at the same time prevents the thread from springing back and being entangled after the thread is cut. The coiled wire is loosened, which is convenient for the next wire cutting and the coiled wire is put away.

Description of drawings

Fig. 1 is the overall structural representation of the utility model;

Fig. 2 is a side view structural schematic diagram of the cutter fixing seat of the present invention.

Labels in the figure:

1-Thread cutting mounting seat; 2-Thread passing frame; 3-Threading mounting plate; 4-Threading barrel; 5-Cutter fixing seat; 6-Cutter driving cylinder; 7-Cutter mounting seat; 8-Cutter ;

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

As shown in Figures 1 to 2, the utility model provides an automatic thread cutting device for winding machines used in the production of current transformers, including a thread cutting installation seat 1, and the two ends of the thread cutting installation seat 1 are provided with wire passing frames 2. The wire passing frame 2 is provided with a wire passing installation plate 3, the wire passing installation plate 3 is provided with a wire passing barrel 4, and the wire passing installation plate 3 is provided with a wire passing installation hole 14, so The thread-passing barrel 4 is detachably threaded in the thread-passing mounting hole 14, and a cutter fixing seat 5 is arranged above the thread-cutting mounting seat 1. There is a fixed bracket 15, the cutter holder 5 is provided with a cutter drive cylinder 6, the output end of the cutter drive cylinder 6 passes through the cutter holder 5 vertically downwards and is connected with a cutter holder 7 , the lower end surface of the cutter mount 7 is provided with a cutter 8 .

In the present invention, the insides of the two wire passing barrels 4 are provided with through holes for passing the wires, and the apertures of the through holes on the two wire passing barrels 4 are the same, and the apertures are also adapted to the diameters of the passing wires. Since the thread-passing barrel 4 is screw-connected to the thread-passing mounting hole 14 to be fixed on the thread-passing mounting plate 3, when it is necessary to cut off threads of different diameters, thread-passing barrels 4 of different apertures can be installed in the thread-passing installation 14, Thereby make the line passing barrel 4 keep matching with the line that needs to be cut off, because the thread passing barrel 4 and the line passing mounting hole 14 are detachably threaded, the connection and fixing and dismounting between the two are all very convenient, and will not cause damage to the thread. Replacing the spool 4 brings trouble. When the utility model is used for thread cutting, the output end of the cutter driving cylinder 6 stretches out, pushing the cutter mount 7 fixed thereon and the cutter 8 arranged on the cutter mount 7 to move down, and the cutter 8 The blade of the knife is facing the line below, so that the thread cutting operation can be carried out when the cutting knife 8 moves down.

As shown in Figure 1, in the utility model, two thread cutting seats 9 are arranged between the two thread passing frames 2, and a thread cutting groove 10 is formed between the two thread cutting seats 9, and the edge of the cutting knife 8 Facing the tangent groove 10, the two sides of the cutter 8 are provided with a fixed telescopic tube 11, the upper end of the fixed telescopic tube 11 is fixedly connected with the cutter mounting seat 7, and the fixed telescopic tube 11 is provided with a fixed rod 12 , the lower ends of the two fixed rods 12 correspond to the two tangent seats 9 respectively, a buffer spring 13 is arranged between the upper ends of the fixed rods 12 and the fixed telescopic tube 11, and the lower end of the fixed rods 12 is provided with rubber The pressing pad 16, the lower end surface of the pressing pad 16 is a concave arc surface.

In the present utility model, two thread tangent seats 9 are arranged between the two wire passing frames 2. When the thread passes through the two thread passing barrels 4, the line between the two thread passing barrels 4 passes through two tangent lines. Seat 9, while the lower end of the line will be close to the upper surface of the tangent seat 9, because the cutter 8 is facing the tangent groove 10 between the two tangent seats 9, when the cutter 9 presses down on the line and cuts, the line Both sides of the mat to be cut are pressed on two tangent seats 9, and the tangent seats 9 provide upward supporting force for it to prevent the deformation of the lines and facilitate the cutting of the lines.

It is worth noting that, in the utility model, fixed telescopic tubes 11 are arranged on both sides of the cutter 8, and when the cutter 8 goes down, the fixed telescopic tube 11 and the fixed rod 12 inside it will also go down, when the cutter 9 When the thread is cut, the fixed rod 12 will also press the thread on the thread cutting seat 9, so that the thread cannot move, and at the same time, it can avoid the springback of the thread and the loosening of the thread wound into a roll after the thread is cut.

It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, no matter from all points of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, so it is intended to fall within the scope of the claims All changes within the meaning and range of equivalents of the required elements are included in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (5)

1. a kind of coil winding machine automatic tangent apparatus for current transformer production, it is characterised in that：Including tangent line mounting base （1）, the tangent line mounting base（1）Be provided at both ends with line crossing bracket（2）, the line crossing bracket（2）On be provided with line mounting plate （3）, described to cross line mounting plate（3）On be provided with spool（4）, the tangent line mounting base（1）Top is provided with cutter fixed seat （5）, the cutter fixed seat（5）On be provided with cutter driving cylinder（6）, the cutter driving cylinder（6）Output end it is vertical It is passed down through cutter fixed seat（5）And it is connected with cutting knife mounting seat（7）, the cutting knife mounting seat（7）Lower face be provided with and cut Knife（8）；

Line crossing bracket described in two（2）Between setting there are two tangent line seat（9）, two tangent line seats（9）Between to cut line groove（10）, The cutter（8）Edge of a knife face cut line groove（10）, the cutter（8）Both sides be provided with fixed retracting cylinder（11）, described solid Determine retracting cylinder（11）Upper end and cutting knife mounting seat（7）It is fixedly connected, the fixed retracting cylinder（11）Inside it is provided with fixed link （12）, the fixed link（12）Upper end and fixed retracting cylinder（11）Between be provided with buffer spring（13）.

2. a kind of coil winding machine automatic tangent apparatus for current transformer production according to claim 1, feature exist In：It is described to cross line mounting plate（3）It is upper to be arranged and had line mounting hole（14）, described to cross spool（4）Detachably it was threaded in Line mounting hole（14）It is interior.

3. a kind of coil winding machine automatic tangent apparatus for current transformer production according to claim 1, feature exist In：The cutter fixed seat（5）Both ends and tangent line mounting base（1）Between be provided with fixing bracket（15）.

4. a kind of coil winding machine automatic tangent apparatus for current transformer production according to claim 1, feature exist In：Two fixed links（12）Lower end respectively correspond to two tangent line seats（9）.

5. a kind of coil winding machine automatic tangent apparatus for current transformer production according to claim 1 or 4, feature It is：The fixed link（12）Lower end be provided with clamping pad made of rubber（16）, the clamping pad（16）Lower face be Recessed arc surface.