CN213945193U

CN213945193U - Wire tightener

Info

Publication number: CN213945193U
Application number: CN202022653718.4U
Authority: CN
Inventors: 林永淦
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-17
Filing date: 2020-11-17
Publication date: 2021-08-13
Anticipated expiration: 2030-11-17

Abstract

The utility model discloses a wire tightener, which comprises a mounting frame, a fixed seat, a guide rail and a locking piece, wherein the mounting frame is provided with a guide wheel and a slide seat, the mounting frame is provided with a mounting hole, and the mounting hole is transversely arranged; the fixed seat is provided with a guide wheel; the upper end of the guide rail is provided with a limiting block, the lower end of the guide rail is connected with the fixed seat, the guide rail is in sliding fit with the sliding seat, a spring is sleeved outside the guide rail and arranged between the sliding seat and the fixed seat, and the guide rail is also provided with a locking groove; the locking piece comprises a lock tongue, and the lock tongue penetrates through a mounting hole in the mounting frame to be in locking fit with the locking groove. When the molybdenum wire is threaded, the spring bolt is inserted into the locking groove to lock and fix the guide rail, the molybdenum wire is conveniently threaded, after the molybdenum wire is threaded, the spring bolt exits from the locking groove, the guide rail is in a free state, the molybdenum wire is wound on the first guide wheel and the second guide wheel, and the second guide wheel automatically adjusts the height according to the tightness of the molybdenum wire, so that the molybdenum wire is kept at a proper tension degree.

Description

Wire tightener

Technical Field

The utility model relates to an improved invention of a wire tightener, in particular to a wire tightener used on a wire cutting machine.

Background

The wire cutting machine adopts the molybdenum wire to carry out wire cutting on a product, when the wire cutting machine works, the molybdenum wire must be ensured to be in a proper tensioning state, when the wire cutting machine works, the wire cutting work can not be normally carried out, when the wire cutting machine works, the molybdenum wire can be pulled apart by over-tightening, and the wire tightener enables the molybdenum wire to be always kept in a proper tensioning state.

The existing wire tightener has the problems of complex structure, low sensitivity and inconvenience in threading a molybdenum wire.

Disclosure of Invention

In view of the technical problem that exists among the background art, the utility model aims at providing a simple and easy, the convenient and high thread tensioner of sensitivity of threading molybdenum wire of structure.

In order to solve the technical problem, the utility model discloses a following technical scheme: the wire tightener is characterized by comprising

The mounting frame is provided with a first guide wheel and a sliding seat, and is provided with a mounting hole which is transversely arranged;

the fixed seat is provided with a second guide wheel;

the guide rail is sleeved with a spring, the spring is arranged between the sliding seat and the fixed seat, and the guide rail is also provided with a locking groove;

and the locking part comprises a lock tongue, and the lock tongue penetrates through the mounting hole in the mounting frame to be in locking fit with the locking groove.

The utility model discloses be provided with the locking groove on the guide rail, when wearing the molybdenum filament, the spring bolt inserts the locking inslot, with guide rail locking, fixed, the rigidity of second guide pulley is convenient for wear the molybdenum filament like this, accomplishes after wearing the molybdenum filament, and the spring bolt withdraws from the locking groove, and the guide rail is in free state, and the molybdenum filament is around establishing on first guide pulley, second guide pulley, and the second guide pulley makes the molybdenum filament keep appropriate rate of tension according to the elasticity automatic rising regulation of molybdenum filament.

Preferably, the at least two locking grooves are vertically arranged on the guide rail, the position of the second guide wheel during threading of the molybdenum wire can be selected according to the tightness of the molybdenum wire, when the molybdenum wire is loose, the lock tongue is inserted into the upper locking groove, and when the molybdenum wire is tight, the lock tongue selects the lower locking groove, so that the molybdenum wire threading operation is facilitated, and the space for tightness adjustment of the molybdenum wire is facilitated.

Preferably, the locking groove is divided into a bottom locking groove and an upper locking groove, an outlet at the lower end of the upper locking groove is inclined downwards, when the bolt moves to the lower locking groove in the upper locking groove, the bolt inserted into the locking groove slides out along the obliquely arranged outlet along with the upward movement of the guide rail, so that the operation of workers is more convenient, the guide rail is not limited by the bolt when moving upwards, if the inlet end and the outlet end of the locking groove are 90 degrees to the surface of the guide rail, the bolt cannot slide out from the inlet end and the outlet end, the guide rail is limited to move upwards, and the bolt can only be pulled out of the locking groove and then can move upwards.

Preferably, the bolt is in threaded connection with the mounting hole.

As preferred, the retaining member is still including the stopping bolt, the stopping bolt is equipped with the centre bore, spacing cap is installed to the one end of spring bolt, the other end of spring bolt passes the centre bore, be equipped with limiting flange on the spring bolt, the stopping bolt sets up between limiting cap and limiting flange, the cover is equipped with spring two on the spring bolt, spring two sets up between stopping bolt and limiting flange, stopping bolt and mount pad threaded connection.

Preferably, the circumferential direction of the contact surface of the retaining bolt and the limiting cap is a relief surface.

Preferably, the mounting frame is provided with a movable limit bolt, and the lock tongue is provided with a clamping groove matched with the limit bolt.

Preferably, an inserting sheet is arranged between the retaining bolt and the limiting cap.

Preferably, the mounting surface of the mounting frame is an inclined surface, and the mounting frame is arranged on the wire frame in an inclined state due to the narrow distance between the wire frame and the wire barrel, so that the wire tightener can be arranged between the wire frame and the wire barrel, the moving stroke of the guide rail can be increased, the adjusting range of the wire tightener is expanded, and the mounting frame can be mounted in a smaller space.

Preferably, the mounting frame is provided with a wire breaking protection switch which comprises

The switch base is provided with a switch contact which is electrically connected with the electric controller;

one end of the switch pressure lever is a connecting end, the other end of the switch pressure lever is a matching end, and the connecting end of the switch pressure lever is hinged with the switch seat;

and an elastic member which enables the matching end of the switch pressure lever to incline upwards;

the switch contact is arranged below the switch pressing rod, and the matching end of the switch pressing rod is in press fit with the limiting block.

When the molybdenum wire is broken, the second guide wheel is not pulled by the molybdenum wire, the elastic force of the spring drives the fixing seat to be far away from the mounting frame, the guide rail moves downwards until the limiting block at the upper end of the guide rail presses the matching end of the switch pressing rod, the switch pressing rod swings downwards to be in contact with the switch contact, the switch contact sends information to the electric controller, and the electric controller sends an instruction to stop the wire barrel from rotating, so that the problems of wire winding and wire winding are avoided.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a rear view of the present invention.

Fig. 3 is a left side view of the present invention.

Fig. 4 is a schematic view of the present invention mounted on a wire stand.

Detailed Description

The following describes details and operational principles of embodiments and examples of the present invention with reference to the drawings. The wire tightener comprises an installation frame 6, a fixed seat 14, a guide rail 2 and a locking piece, wherein a first guide wheel 5 and a sliding seat 4 are installed on the installation frame, and installation holes are formed in the installation frame and arranged transversely; a second guide wheel 15 is arranged on the fixed seat; the upper end of the guide rail is provided with a limiting block 1, the lower end of the guide rail is connected with a fixed seat 14, the guide rail is in sliding fit with a sliding seat 4, the sliding seat is arranged between the limiting block 1 and the fixed seat 14, namely the sliding seat slides between the limiting block 1 and the fixed seat 14, and a gasket 3 can be arranged at the contact part of the mounting frame, the fixed seat and the limiting block to prevent the mounting frame, the fixed seat and the limiting block from being damaged due to hard collision; a spring 11 is sleeved outside the guide rail and arranged between the sliding seat 4 and the fixed seat 14, the fixed seat is far away from the mounting frame due to the elasticity of the spring, and a locking groove 12 is further arranged on the guide rail; the locking piece comprises a bolt 10 which passes through a mounting hole in the mounting frame and is in locking fit with the locking groove 12.

See fig. 4, the mounting bracket 6 is installed on the wire holder 26 of the machine tool, the molybdenum wire 24 is wound on the guide wheel arranged on the wire barrel 25, the first guide wheel 5, the second guide wheel 15 and the wire holder, the motor drives the wire barrel 25 to rotate, the molybdenum wire performs wire cutting operation on the workpiece, the molybdenum wire must keep stable tension degree during operation, the utility model discloses make the molybdenum wire keep proper tension during operation to guarantee the stable operation of the molybdenum wire. When the molybdenum wire 24 is threaded, in order to facilitate threading, the position of the second guide wheel 15 needs to be fixed, the guide rail 2 is moved to enable the bolt 10 to be inserted into the locking groove 12 on the guide rail, and the guide rail is locked and fixed, so that the position of the second guide wheel is fixed, and the molybdenum wire can be conveniently threaded; after the molybdenum wire is threaded, the bolt 10 exits from the locking groove, and the guide rail is in a free state; if the molybdenum wire 24 is loose, the elastic force of the spring 11 enables the fixed seat to move downwards, the distance between the first guide wheel 5 and the second guide wheel 15 is increased, and the molybdenum wire is tensioned; if the molybdenum wire is too tight, the tension of the molybdenum wire is larger than the elastic force of the spring, so that the fixing seat moves upwards, the distance between the first guide wheel and the second guide wheel is reduced, the molybdenum wire is properly loosened, and the molybdenum wire is ensured to be kept at proper tension degree during operation.

The locking grooves 12 are at least two and are vertically arranged on the guide rail, the position of the second guide wheel during molybdenum wire threading can be properly selected according to the tightness of the molybdenum wire, when the molybdenum wire is loose, the lock tongue is inserted into the upper locking groove, and when the molybdenum wire is tight, the lock tongue selects the lower locking groove, so that molybdenum wire threading is facilitated. The locking groove is divided into a bottom locking groove and an upper locking groove, an outlet 13 at the lower end of the upper locking groove is inclined downwards, the locking groove is in a half-drop shape, a bolt inserted into the locking groove slides out along the inclined outlet along with the upward movement of the guide rail, the guide rail cannot be limited by the bolt when moving upwards, the guide rail can move upwards conveniently, and the guide rail is limited by the upper end of the locking groove when moving downwards; if the locking groove is semicircular or square, and the inlet end and the outlet end of the locking groove are approximately 90 degrees with the surface of the guide rail, the locking bolt cannot slide out from the inlet end and the outlet end, the guide rail is limited to move upwards, the locking bolt can only be moved upwards after being pulled out of the locking groove, and the bottom locking groove is semicircular or square.

The bolt 10 can adopt different structures when entering and exiting the locking groove 12, and the structure is listed as two; in the first embodiment, the bolt is in threaded connection with the mounting hole, so that the bolt can enter and exit the locking groove, and meanwhile, the bolt is firmly connected with the mounting frame and is not easy to slide. Embodiment two, see fig. 1-3, the retaining member still includes stopping bolt 8, stopping bolt is equipped with the centre bore, spacing cap 7 is installed to the one end of spring bolt 10, the other end of spring bolt passes the centre bore, be equipped with spacing flange 27 on the spring bolt, stopping bolt sets up between spacing cap 7 and spacing flange 27, the cover is equipped with spring two 9 on the spring bolt, spring two sets up between stopping bolt and spacing flange 27, stopping bolt 8 and mount pad threaded connection use external force to overcome the elasticity of spring two 9 and outwards draw spacing cap 7, make the spring bolt break away from locking groove 12, and guide rail 2 is in free state this moment, loosens spacing cap, and then the elasticity of spring two promotes spring bolt 10 and inwards extrudees, and when the locking groove on the guide rail was opposite with the spring bolt position, then the lock bolt inserts in the locking groove 12, locks the position of guide rail. After threading is finished, the lock tongue is separated from the locking groove, so the lock tongue needs to be fixed after being pulled out, an inserting piece can be arranged between the stopping bolt and the limiting cap and is clamped between the stopping bolt and the limiting cap to prevent the lock tongue from going deep, and when the lock tongue needs to operate, the inserting piece is pulled out; or, a movable limit bolt is arranged on the mounting frame, a clamping groove matched with the limit bolt is arranged on the spring bolt, after the limit cap is pulled outwards and the spring bolt is separated from the locking groove, the clamping groove on the spring bolt is just opposite to the limit bolt, the limit bolt is inserted into the clamping groove to fix the spring bolt and prevent the spring bolt from penetrating deeply again, and when the spring bolt needs to operate, the limit bolt is pulled out; or the circumferential direction of the contact surface of the retaining bolt and the limiting cap is a relief surface 22, the two are matched in the best state, namely the convex part of the retaining bolt is matched with the groove part of the limiting cap, the groove part of the retaining bolt is matched with the convex part of the limiting cap, when the convex part of the retaining bolt is arranged in the groove of the limiting cap, the bolt is inserted into the locking groove deeply, when the limiting cap is pulled out outwards, the relief surfaces of the two generate a space, at the moment, the limiting cap is rotated to enable the convex part of the limiting cap to be opposite to the convex part of the retaining bolt, the limiting cap is blocked by the retaining bolt, the bolt which is withdrawn cannot be inserted deeply, the guide rail is in a free state, when the bolt needs to operate, the limiting cap is rotated to enable the convex part of the limiting cap to be opposite to the groove part of the limiting bolt, the limiting cap is loosened, the two are attached, and the bolt is inserted into the locking groove deeply.

The installation face 23 of mounting bracket is the inclined plane, and is narrower because of the interval between line frame 26 and the silk section of thick bamboo, see figure 4, when mounting bracket 6 is installed on line frame 26, the silk tightener is the tilt state, and the silk tightener can set up between the two like this, if the installation face also is vertical setting, then the silk section of thick bamboo 25 is just touchhed easily to the guide rail, perhaps needs enlarge the distance of a silk section of thick bamboo and line frame, and the utility model discloses an adopt the installation face 23 of slope, make the relative line frame of guide rail be in the tilt state, not only can install in narrow space, but also can increase the removal stroke of guide rail, enlarge the control range of silk tightener.

The mounting frame is provided with a wire breaking protection switch, the wire breaking protection switch comprises a switch seat 20, a switch pressure lever 18 and an elastic piece which enables the matching end of the switch pressure lever to incline upwards, the elastic piece can adopt a torsion spring, the switch seat is provided with a switch contact 21, and the switch contact is electrically connected with the electric controller; one end of the switch compression bar is a connecting end 19, the other end of the switch compression bar is a matching end 17, the connecting end of the switch compression bar is hinged with the switch seat, and the torsion spring is arranged at the hinged position to enable the switch compression bar to be in an open state; the switch contact 21 is arranged below the switch pressure lever 18, and the matching end of the switch pressure lever is in press fit with the limiting block. When the molybdenum wire is broken, the second guide wheel 15 is not pulled by the molybdenum wire, the elastic force of the spring 11 drives the fixed seat 14 to be far away from the mounting frame 6, the guide rail 2 moves downwards until the limiting block 1 at the upper end of the guide rail presses the matching end 17 of the switch pressing rod, the switch pressing rod swings downwards to be in contact with the switch contact 21, the switch contact sends information to the electric controller, and the electric controller sends an instruction to stop the wire barrel 25 from rotating, so that the problems of wire winding and wire winding are avoided. In order to facilitate installation, the installation position of the switch base is far away from the limiting block, in order to avoid the situation that the matching end of the limiting block and the switch pressing rod cannot be pressed, a push rod 16 is arranged above the matching end of the switch pressing rod, the push rod can be arranged on the limiting block or a through hole is formed in the mounting frame, the push rod is inserted into the through hole and arranged above the switch pressing rod, when the limiting block moves downwards, the matching end of the switch pressing rod is pressed through the push rod, and finally the switch pressing rod swings downwards and contacts with the switch contact. When the molybdenum wire problem is solved, the elastic force of the elastic piece enables the matching end of the switch pressure lever to swing upwards, and the switch contact is recovered to be normal.

Claims

1. A wire tightener, which is characterized by comprising

The mounting frame is provided with a guide wheel and a sliding seat, and is provided with a mounting hole which is transversely arranged;

a fixed seat provided with a guide wheel;

2. The wire tensioner as claimed in claim 1, wherein the locking grooves are provided in at least two and are vertically aligned on the guide rail.

3. The wire tensioner as claimed in claim 2, wherein the locking groove is divided into a bottom locking groove and an upper locking groove, and a lower outlet of the upper locking groove is inclined downward.

4. The wire tensioner as in claim 1, wherein the locking tongue is threadably engaged with the mounting hole.

5. The wire tensioner according to claim 1, wherein the locking member further comprises a stopping bolt, the stopping bolt is provided with a central hole, a limiting cap is installed at one end of the spring bolt, the other end of the spring bolt penetrates through the central hole, a limiting flange is arranged on the spring bolt, the stopping bolt is arranged between the limiting cap and the limiting flange, a second spring is sleeved on the spring bolt, the second spring is arranged between the stopping bolt and the limiting flange, and the stopping bolt is in threaded connection with the mounting seat.

6. The wire tensioner as claimed in claim 5, wherein the contact surface between the retaining pin and the stop cap has a circumferential undulated surface.

7. The wire tensioner according to claim 5, wherein the mounting bracket is provided with a movable limit bolt, and the lock tongue is provided with a slot matched with the limit bolt.

8. The wire tensioner according to claim 5, wherein an insert is disposed between the retaining pin and the stop cap.

9. The tensioner of claim 1, wherein the mounting surface of the mounting bracket is a sloped surface.

10. The wire tensioner according to claim 1, wherein the mounting bracket is provided with a wire break protection switch, and the wire break protection switch comprises