CN211708313U

CN211708313U - Tension adjusting device of wire cutting machine

Info

Publication number: CN211708313U
Application number: CN201922327001.8U
Authority: CN
Inventors: 刘建俊; 蒋赟鑫; 宁祥春
Original assignee: Changzhou Qingyuan Machinery Technology Co ltd
Current assignee: Changzhou Qingyuan Machinery Technology Co ltd
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2020-10-20
Anticipated expiration: 2029-12-20

Abstract

The utility model relates to a tension adjusting device of a wire cutting machine, which comprises a machine tool, an XY workbench, a wire guiding component, a wire storage cylinder and the XY workbench, the top at the lathe is all installed to seal wire subassembly and storage silk section of thick bamboo, one side at the seal wire subassembly is installed to the storage silk section of thick bamboo, the below that one side of storage silk section of thick bamboo was kept away from to the seal wire subassembly is the XY workstation, the seal wire subassembly is including adjusting the support, first bank and second bank, adjust the vertical surface of installing at the lathe of support, the side and the second bank fixed connection of adjusting the support, first bank and the equal level setting of second bank, the second bank is located the top of XY workstation, first bank is located the top of second bank, the one end and the adjusting bracket sliding connection of first bank, the middle part of first bank and second bank all is provided with adjusting part, the one end that adjusting bracket was kept away from to first bank and second bank all is provided with balanced subassembly. The utility model discloses have the surface tension stability who keeps the cutting wire in the course of the work, improve the effect of product machining precision.

Description

Tension adjusting device of wire cutting machine

Technical Field

The utility model belongs to the technical field of wire cut electrical discharge machining's auxiliary device's technique and specifically relates to a wire cut electrical discharge machining's tension adjusting device is related to.

Background

The wire cutting machine mainly comprises three parts, namely a machine tool, a numerical control system and a high-frequency power supply, wherein the machine tool comprises a machine tool body, a wire storage mechanism, a wire frame, an XY workbench, an oil tank and the like. The cutting line wound on the wire storage cylinder reciprocates at high speed through the wire frame. The processing workpiece is fixed on the XY working table. X, Y are controlled by a stepper motor. When the numerical control system sends a signal, the stepping motor moves one step, and the screw rods in two directions are driven to rotate through the intermediate transmission mechanism, so that the X, Y working tables are respectively fed. It can cut materials such as high strength, high toughness, high hardness, high brittleness, magnetic materials, and precision fine and complex shaped parts. Wire cutting techniques and wire cutting machines are being widely used in various industries.

The utility model discloses a stable wire cut electrical discharge machining that bulletin number is CN106624224A, including the benchmark platform, the benchmark platform surface is provided with upright beam column, be provided with triaxial moving mechanism on the upright beam column top, triaxial moving mechanism one side is provided with first line cutting portion, first line cutting head sets up in the front end one side of extending the platform, first line cutting portion below is provided with second line cutting portion, second line cutting portion sets up on upright beam column, still be provided with line of cut tensioning mechanism on the upright beam column side, still be provided with first wire passing channel on the extension platform side, be provided with the second wire passing channel in the second line cutting portion, first wire passing channel, line of cut tensioning mechanism and second wire passing channel are located same one side, be provided with work piece moving mechanism on the benchmark platform of second line cutting portion below, still be provided with line of cut transmission mechanism on the benchmark platform of upright beam column rear side. The invention has high processing precision, good stability, long service life and controlled cost.

The above prior art solutions have the following drawbacks: in the in-service use process, the life of line of cut is closely related with line of cut straining device, and line of cut straining device also closely related with the machining precision of line of cut, and current line of cut straining device adjusts inconveniently, and too tightly can lead to the line of cut to take place the fracture, and too pine can lead to line of cut machining precision to reduce, leads to the yields lower.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a wire cut electrical discharge machining's that the line connection is stable tension adjusting device to the not enough of prior art existence.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

a tension adjusting device of a wire cutting machine comprises a machine tool, an XY workbench, a wire guiding assembly and a wire storage barrel, wherein the XY workbench, the wire guiding assembly and the wire storage barrel are all arranged above the machine tool, the wire storage barrel is arranged on one side of the wire guiding assembly, the XY workbench is arranged below one side of the wire guiding assembly, which is far away from the wire storage barrel, the wire guiding assembly comprises an adjusting support, a first wire frame and a second wire frame, the adjusting support is vertically arranged on the surface of the machine tool, the side surface of the adjusting support is fixedly connected with the second wire frame, the first wire frame and the second wire frame are both horizontally arranged, the second wire frame is positioned above the XY workbench, the first wire frame is positioned above the second wire frame, one end of the first wire frame is slidably connected with the adjusting support, and adjusting assemblies are arranged in the middles of the first wire frame and the second wire frame, and one ends of the first wire frame and the second wire frame, which are far away from the adjusting bracket, are provided with balancing components.

Through adopting above-mentioned technical scheme, first silk frame is used for going up the silk, and the second silk frame is used for receiving the silk, goes up the silk and receives the in-process of silk, adjusts the surface tension of cutting wire through setting up the same adjusting part, keeps balance between the two to at whole cutting process, balanced subassembly can further improve the surface tension's of cutting wire stability, thereby improves the machining precision.

The present invention may be further configured in a preferred embodiment as: the adjusting component comprises a connecting plate, a pressure sensor, a first adjusting rod, an adjusting spring and an adjusting plate, one end of the connecting plate is rotatably connected with the side wall of the first wire frame or the second wire frame through a rotating shaft, one side of the connecting plate, which is close to the rotating shaft, is connected with a first roller, a waist-shaped hole is formed in the surface of the connecting plate, a first limiting rod is arranged on one side of the waist-shaped hole of the first wire frame or the second wire frame, the pressure sensor is abutted against the first limiting rod, one end of the pressure sensor, which is far away from the first limiting rod, is fixedly connected with the first adjusting rod, the first adjusting rod penetrates through the waist-shaped hole, the adjusting spring is sleeved outside the first adjusting rod, the adjusting spring is positioned on one side of the first adjusting rod, which is far away from the pressure sensor, one end of the adjusting spring is abutted against the connecting plate, the other end of the adjusting spring is abutted to the adjusting plate, the adjusting plate is connected with the first adjusting rod in a sliding mode, the adjusting plate is perpendicular to the first adjusting rod, a sliding groove is formed in the inner wall of the first lead screw or the inner wall of the second lead screw, and the adjusting plate is far away from one end of the first adjusting rod and located inside the sliding groove.

Through adopting above-mentioned technical scheme, under the drive of regulating plate, adjusting spring moves along the length direction of first regulating lever to drive the regulating plate slope, thereby the surface tension of the first gyro wheel that the adjustment is connected with the connecting plate is located the surface tension size after the measurement adjustment that one section pressure sensor of first regulation pole can be accurate.

The present invention may be further configured in a preferred embodiment as: the adjusting spring with be provided with the protection shield between the connecting plate, the protection shield cover is established the outside of first regulation pole, protection shield one end with connecting plate looks butt, the other end with adjusting spring fixed connection, the cross section of protection shield is greater than the cross section in waist shape hole.

Through adopting above-mentioned technical scheme, the protection shield can play the guard action to lieing in adjusting spring, avoids adjusting spring to deviate from waist shape is downthehole in the adjustment process, leads to adjusting part to become invalid.

The present invention may be further configured in a preferred embodiment as: the inner wall of first silk frame or second silk frame all is provided with the second gag lever post, the second gag lever post is close to the pivot sets up, the second gag lever post is located the connecting plate is kept away from one side of first gyro wheel.

Through adopting above-mentioned technical scheme, the second gag lever post avoids connecting plate rotation amplitude too big, and in the course of working, surface tension's stability is relatively poor, and the precision of the work piece of processing out is lower.

The present invention may be further configured in a preferred embodiment as: the connecting plate is kept away from the one end of pivot is connected with the bumper shock absorber, the bumper shock absorber sets up perpendicularly, the bumper shock absorber includes telescopic link and sleeve pipe, the one end of telescopic link with the connecting plate is connected, the other end of telescopic link inserts the sheathed tube inside, sheathed tube other end fixed mounting be in the surface of first silk frame or second silk frame.

Through adopting above-mentioned technical scheme, the bumper shock absorber can effectively be alleviated in the course of working, and the vibration that the vibration of cutting wire brought the adjusting part improves the stability of the work of adjusting part to improve the machining precision of product.

The present invention may be further configured in a preferred embodiment as: the balanced subassembly includes fixing base, connecting lever and coupling spring, the fixing base fixed mounting be in the surface of first silk frame or second silk frame, the perforating hole has been seted up to the fixing base is inside, the one end of connecting lever is connected with the second gyro wheel, and the other end runs through the perforating hole, the connecting lever is kept away from the one end of second gyro wheel is provided with first locating lever, the surface of fixing base is provided with the second locating lever, pass through between first locating lever and the second locating lever coupling spring is connected.

Through adopting above-mentioned technical scheme, connecting lever and second gyro wheel can be in the middle of the process of cutting wire processing, keep the straightness that hangs down of line of cut, and when tension changed, the connecting lever moved along the length direction of fixing base to under connecting spring's drive, in time reset, further improved the job stabilization nature of line of cut.

The present invention may be further configured in a preferred embodiment as: the four corners of the fixing seat are provided with grooves, the inner parts of the grooves are connected with adjusting rollers, and the adjusting rollers are abutted to the connecting lever.

Through adopting above-mentioned technical scheme, the regulating roller can keep the connecting lever to move along the length direction of fixing base on the one hand, and on the other hand can reduce the frictional force between connecting lever and the fixing base support, improves the life of balanced subassembly.

The present invention may be further configured in a preferred embodiment as: the inside cavity setting of adjusting the support, the slide rail has all been seted up along its length direction to the both sides of adjusting the support, the side of first bank of wires is provided with the slider, the slider is located the inside of slide rail, the top of adjusting the support is provided with adjustment handle, the inside of adjusting the support is provided with the second and adjusts the pole, the one end of second regulation pole is passed the top of adjusting the support with adjustment handle rotates to be connected, the other end pass through the connecting rod with first bank of wires is connected.

Through adopting above-mentioned technical scheme, first silk frame slides from top to bottom along the direction of height of adjusting the support under adjustment handle's drive to adjust the relative distance between first silk frame and the second silk frame, be convenient for process the work piece of different thickness.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the technical scheme that the adjusting assembly and the balancing assembly are arranged on the surfaces of the first wire frame and the second wire frame is adopted, so that the stability of the surface tension of the cutting wire in the working process can be kept, and the effect of the processing precision of a product is improved;

2. the technical scheme of the adjusting assembly with the first adjusting rod, the connecting plate and the adjusting plate is adopted, so that the effect of accurately adjusting the surface tension of the cutting line can be achieved;

3. the technical scheme of the adjusting support with the adjusting handle and the second adjusting rod is adopted, so that the relative height between the first wire frame and the second wire frame can be adjusted, and the effect of processing workpieces with different thicknesses is facilitated.

Drawings

Fig. 1 is a schematic view of the overall structure of the present embodiment.

Fig. 2 is a schematic structural view of the guide wire assembly in the present embodiment.

Fig. 3 is a schematic view of a connection structure of the adjusting assembly and the first wire frame in this embodiment.

Fig. 4 is a schematic view of a connection structure of the equalizing member and the first wire frame in this embodiment.

In the figure, 1, a machine tool; 2. an XY stage; 3. a guidewire assembly; 31. adjusting the bracket; 311. a slide rail; 312. an adjusting handle; 313. a second adjusting lever; 314. a connecting rod; 32. a first wire frame; 321. a rotating shaft; 322. a chute; 323. a first limit rod; 324. a second limiting rod; 325. a slider; 33. a second wire frame; 34. an adjustment assembly; 341. a connecting plate; 3411. a waist-shaped hole; 342. a pressure sensor; 343. a first adjusting lever; 344. adjusting the spring; 345. an adjusting plate; 346. a first roller; 347. a protection plate; 348. a shock absorber; 3481. a telescopic rod; 3482. a sleeve; 349. adjusting the bolt; 35. a balancing component; 351. a fixed seat; 3511. a through hole; 3512. a second positioning rod; 3513. a regulating roller; 352. a crank arm; 3521. a second roller; 3522. a first positioning rod; 353. a connecting spring; 4. a wire storage barrel; 5. a control cabinet.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the tension adjusting device of the wire cutting machine disclosed by the present invention, comprising a machine tool 1, an XY table 2, a wire guiding assembly 3, a wire storing barrel 4 and a control cabinet 5, the control cabinet 5 is located at one side of the machine tool 1 and electrically connected to the machine tool 1, the XY table 2, the wire guiding assembly 3 and the wire storing barrel 4 are all installed on the surface of the machine tool 1, the wire storing barrel 4 is installed at one side of the machine tool 1 through an installation support, the wire guiding assembly 3 is located at one side of the wire storing barrel 4, the wire guiding assembly 3 is located at the XY table 2 at the side far away from the wire storing barrel 4, the wire guiding assembly 3 comprises an adjustment support 31, a first wire frame 32, a second wire frame 33, an adjustment assembly 34 and a balance assembly 35, the adjustment support 31 is vertically installed at one side of the surface of the machine tool 1 close to the wire storing barrel 4, the first wire frame 32 and the second wire frame 33 are both installed on the surface of the adjustment support 31 and are horizontally arranged, the longitudinal section is the U-shaped groove of one side open-ended, the opening opposite direction of first silk frame 32 and second silk frame 33, first silk frame 32 opening up, second silk frame 33 opening is down, the cutting line of being convenient for passes and returns to the inside of storing up a silk section of thick bamboo 4, the one end and the regulation support 31 sliding connection of first silk frame 32, the one end fixed mounting of second silk frame 33 is on the surface of regulation support 31, adjusting part 34 is all installed at the middle part of first silk frame 32 and second silk frame 33, balanced subassembly 35 is all installed to the one end that first silk frame 32 and second silk frame 33 kept away from regulation support 31. The adjusting components 34 are arranged in the first wire frame 32 and the second wire frame 33, so that the surface tension of the cutting wire in the workpiece can be better kept to be more consistent, the balance between the cutting wire and the workpiece can be kept through the balancing components 35, the stability of the working state of the cutting wire is improved, and the quality of a processed product is guaranteed.

Referring to fig. 2, the bottom of the adjusting bracket 31 is mounted on the surface of the machine tool 1 through screws, sliding rails 311 are respectively disposed on two sides of the adjusting bracket 31 along the height direction of the adjusting bracket, two sliding blocks 325 are disposed on one side of the first thread frame 32 close to the adjusting bracket 31, the sliding blocks 325 are disposed inside the sliding rails 311, the adjusting bracket 31 is hollow, a second adjusting rod 313 is vertically disposed inside the adjusting bracket, an adjusting handle 312 is connected to the top of the second adjusting rod 313 through the adjusting bracket 31, the adjusting handle 312 is rotatably connected to the top of the adjusting bracket 31, a connecting rod 314 horizontally disposed is connected to the other end of the second adjusting rod 313, and the connecting rod 314 penetrates through the side wall of the adjusting bracket 31 and is fixedly connected to the first. Under the driving of the adjusting handle 312, the second adjusting rod 313 drives the first lead screw to move along the height direction of the adjusting bracket 31, so as to adjust the distance between the first wire frame 32 and the second wire frame 33, thereby facilitating the processing of workpieces with different thicknesses.

Referring to fig. 3, the adjusting assembly 34 includes a connection plate 341, a pressure sensor 342, a first adjusting lever 343, an adjusting spring 344, an adjusting plate 345, a first roller 346, a protection plate 347, a damper 348, and an adjusting bolt 349. The top of the inner wall of the first screw frame 32 is provided with a first limiting rod 323, the lower part of the first limiting rod 323 is abutted against a pressure sensor 342, and one end of the pressure sensor 342, which is far away from the first limiting rod 323, is fixedly connected with a first adjusting rod 343. The first adjusting rod 343 is vertically arranged, a waist-shaped hole 3411 is formed in the middle of the connecting plate 341, the first adjusting rod 343 penetrates through the waist-shaped hole 3411, the protecting plate 347, the adjusting spring 344 and the adjusting plate 345 are all sleeved on a portion, below the connecting plate 341, of the first adjusting rod 343, one side of the protecting plate 347 is abutted to the connecting plate 341, the other side of the protecting plate 347 is abutted to the adjusting spring 344, the area of the cross section of the protecting plate 347 is larger than that of the waist-shaped hole 3411, separation of the adjusting spring 344, below the connecting plate 341, from the waist-shaped hole 3411 is avoided. One side that protection plate 347 was kept away from to regulating spring 344 is inconsistent with regulating plate 345, the one end that pressure sensor 342 was kept away from to first regulation pole 343 is provided with the anticreep arch, regulating plate 345 sets up with first regulation pole 343 is perpendicular, the one end that first regulation pole 343 was kept away from to regulating plate 345 is inserted in the inner wall of first silk frame 32, the recess has been seted up along the direction of height to the inner wall of first silk frame 32, the inside of recess is provided with the threaded rod, regulating plate 345 and threaded rod threaded connection, the bottom of threaded rod passes groove connection and has adjusting bolt 349, just with the height of adjusting first regulating part.

The first screw frame 32 is provided with a rotating shaft 321 inside, one end of the connecting plate 341 is rotatably connected with the rotating shaft 321, the other end of the connecting plate 341 is fixedly connected with the shock absorber 348, the first screw frame 32 is further provided with a second limiting rod 324 inside, the second limiting rod 324 is located above the connecting plate 341 and is arranged close to the rotating shaft 321, and the side surface of the connecting plate 341 is connected with a first roller 346. The shock absorber 348 comprises an expansion link 3481 and a sleeve 3482, one end of the expansion link 3481 is fixedly connected to the connecting plate 341, the other end is inserted into the sleeve 3482, one end of the sleeve 3482 far away from the expansion link 3481 is fixedly connected to the first wire frame 32, and the expansion link 3481 and the sleeve 3482 can further improve the stability of the adjusting assembly 34 during operation.

Referring to fig. 4, the balancing assembly 35 includes a fixing seat 351, a crank arm 352 and a connecting spring 353, the fixing seat 351 is fixedly installed at one end of the first wire frame 32 far away from the adjusting bracket 31, a through hole 3511 is formed in the fixing seat 351 along the length direction of the fixing seat, one end of the crank arm 352 horizontally penetrates through the through hole 3511 and is vertically provided with a first positioning rod 3522, a second positioning rod 3512 is vertically provided at the top of the fixing seat 351, and the first positioning rod 3522 and the second positioning rod 3512 are connected through the connecting spring 353. The recess has all been seted up at the four corners of fixing base 351, and the inside rotation of recess is connected with regulating roller 3513, and regulating roller 3513 and crank arm 352 looks butt keep the stability when crank arm 352 moves. One end of the crank arm 352, which is far away from the fixed seat 351, is rotatably connected with a second roller 3521, and the second roller 3521 is convenient for the cutting line to pass through.

The specific implementation process of the embodiment is as follows:

before processing the workpiece, the workpiece is placed on the surface of the XY table 2, the adjusting handle 312 is rotated according to the thickness of the workpiece, the first wire frame 32 is adjusted to a proper height by the driving of the second adjusting rod 313, and then the cutting wire is taken out from the inside of the wire storage barrel 4, passes through the first roller 346 and the second roller 3521 of the first wire frame 32, and the second roller 3521 and the first roller 346 of the second wire frame 33 in sequence, and then returns to the inside of the wire storage barrel 4. Then, the adjusting bolts 349 inside the first wire frame 32 and the second wire frame 33 are respectively adjusted, and the first adjusting rod 343 drives the connecting plate 341 to move under the driving of the adjusting plate 345, so as to adjust the surface tension of the cut on the first roller 346, observe the surface tension detected by the pressure sensor 342, and start the device after the surface tensions of the cut lines on the first wire frame 32 and the second wire frame 33 are adjusted to be consistent.

In the process of processing the workpiece, under the protection of the shock absorber 348 and the adjusting spring 344, the adjusting assembly 34 keeps a stable working state, the crank arm 352 of the equalizing assembly 35 moves along the length direction of the fixed seat 351, the vertical direction of the cutting line is kept, and the cutting precision is improved.

The device has the characteristics of high working stability, convenient use, high processing precision and the like.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a wire cutting machine's tension adjusting device, includes lathe (1), XY workstation (2), seal wire subassembly (3) and stores up a silk section of thick bamboo (4), XY workstation (2), seal wire subassembly (3) and store up a silk section of thick bamboo (4) and all install the top of lathe (1), store up a silk section of thick bamboo (4) and install one side of seal wire subassembly (3), seal wire subassembly (3) are kept away from the below of one side of storing up a silk section of thick bamboo (4) is XY workstation (2), its characterized in that: the guide wire assembly (3) comprises an adjusting bracket (31), a first wire frame (32) and a second wire frame (33), the adjusting bracket (31) is vertically arranged on the surface of the machine tool (1), the side surface of the adjusting bracket (31) is fixedly connected with the second wire frame (33), the first wire frame (32) and the second wire frame (33) are both horizontally arranged, the second wire frame (33) is positioned above the XY workbench (2), the first wire frame (32) is positioned above the second wire frame (33), one end of the first wire frame (32) is connected with the adjusting bracket (31) in a sliding way, the middle parts of the first wire frame (32) and the second wire frame (33) are respectively provided with an adjusting component (34), and one ends of the first wire frame (32) and the second wire frame (33) far away from the adjusting bracket (31) are respectively provided with a balance assembly (35).

2. The tension adjusting apparatus of a wire cutting machine according to claim 1, wherein: the adjusting assembly (34) comprises a connecting plate (341), a pressure sensor (342), a first adjusting rod (343), an adjusting spring (344) and an adjusting plate (345), one end of the connecting plate (341) is rotatably connected with the side wall of the first wire frame (32) or the second wire frame (33) through a rotating shaft (321), one side of the connecting plate (341) close to the rotating shaft (321) is connected with a first roller (346), a waist-shaped hole (3411) is formed in the surface of the connecting plate (341), one side of the waist-shaped hole (3411) of the first wire frame (32) or the second wire frame (33) is provided with a first limiting rod (323), the pressure sensor (342) is abutted against the first limiting rod (323), one end of the pressure sensor (342) far away from the first limiting rod (323) is fixedly connected with the first adjusting rod (343), and the first adjusting rod (343) is arranged through the waist-shaped hole (3411), the adjusting spring (344) is sleeved outside the first adjusting rod (343), the adjusting spring (344) is located on one side, away from the pressure sensor (342), of the first adjusting rod (343), one end of the adjusting spring (344) is connected with the connecting plate (341) in a butting mode, the other end of the adjusting spring (344) is connected with the adjusting plate (345) in a butting mode, the adjusting plate (345) is connected with the first adjusting rod (343) in a sliding mode, the adjusting plate (345) is perpendicular to the first adjusting rod (343), a sliding groove (322) is formed in the inner wall of the first wire frame (32) or the inner wall of the second wire frame (33), and one end, away from the first adjusting rod (343), of the adjusting plate (345) is located inside the sliding groove (322).

3. The tension adjusting apparatus of a wire cutting machine according to claim 2, wherein: a protection plate (347) is arranged between the adjusting spring (344) and the connecting plate (341), the protection plate (347) is sleeved outside the first adjusting rod (343), one end of the protection plate (347) is abutted against the connecting plate (341), the other end of the protection plate is fixedly connected with the adjusting spring (344), and the cross section of the protection plate (347) is larger than that of the waist-shaped hole (3411).

4. The tension adjusting apparatus of a wire cutting machine according to claim 2, wherein: the inner wall of the first wire frame (32) or the second wire frame (33) is provided with a second limiting rod (324), the second limiting rod (324) is arranged close to the rotating shaft (321), and the second limiting rod (324) is positioned on one side, away from the first roller (346), of the connecting plate (341).

5. The tension adjusting apparatus of a wire cutting machine according to claim 2, wherein: one end, far away from the rotating shaft (321), of the connecting plate (341) is connected with a shock absorber (348), the shock absorber (348) is vertically arranged, the shock absorber (348) comprises a telescopic rod (3481) and a sleeve (3482), one end of the telescopic rod (3481) is connected with the connecting plate (341), the other end of the telescopic rod (3481) is inserted into the sleeve (3482), and the other end of the sleeve (3482) is fixedly mounted on the surface of the first wire frame (32) or the second wire frame (33).

6. The tension adjusting apparatus of a wire cutting machine according to claim 4, wherein: the equalizing assembly (35) comprises a fixed seat (351), a crank arm (352) and a connecting spring (353), wherein the fixed seat (351) is fixedly installed on the surface of the first wire frame (32) or the second wire frame (33), a through hole (3511) is formed in the fixed seat (351), one end of the crank arm (352) is connected with a second roller (3521), the other end of the crank arm penetrates through the through hole (3511), one end, far away from the second roller (3521), of the crank arm (352) is provided with a first positioning rod (3522), a second positioning rod (3512) is arranged on the surface of the fixed seat (351), and the first positioning rod (3522) and the second positioning rod (3512) are connected through the connecting spring (353).

7. The tension adjusting apparatus of a wire cutting machine according to claim 6, wherein: four corners of the fixed seat (351) are provided with grooves, the grooves are internally connected with adjusting rollers (3513), and the adjusting rollers (3513) are abutted to the crank arms (352).

8. The tension adjusting apparatus of a wire cutting machine according to claim 1, wherein: the inside cavity of adjusting support (31) sets up, slide rail (311) have all been seted up along its length direction to the both sides of adjusting support (31), the side of first silk frame (32) is provided with slider (325), slider (325) are located the inside of slide rail (311), the top of adjusting support (31) is provided with adjustment handle (312), the inside of adjusting support (31) is provided with second regulation pole (313), the one end of second regulation pole (313) is passed the top of adjusting support (31) with adjustment handle (312) rotate and are connected, the other end pass through connecting rod (314) with first silk frame (32) are connected.