Cutting device and guide wheel adjusting mechanism thereof

Abstract

The utility model discloses a cutting device and a guide wheel adjusting mechanism thereof. The guide wheel adjusting mechanism comprises an adjusting frame, a movable frame assembly, a cutting guide wheel and a cutting line. The first fixing seat is connected to the adjusting frame; the first fixing seat is provided with a horizontal adjusting hole; one end of the transverse movable rod is linearly and movably limited in the horizontal adjusting hole, and the other end of the transverse movable rod is connected to the second fixed seat; part of the cutting guide wheel is mounted on the second fixing seat; the second fixed seat is rotationally connected to the first rotating area of the rotating seat; one end of the transverse fixing rod is rotationally connected to the adjusting frame, and the other end of the transverse fixing rod is rotationally connected to the second rotating area of the rotating seat; and the cutting wire is wound on a plurality of cutting guide wheels of the adjusting frame. The cutting device is provided with the guide wheel adjusting mechanism. According to the scheme, the cutting angle of the cutting device can be rapidly adjusted, and the problems that the cutting angle of a traditional cutting device is inconvenient to adjust and the angle adjusting range is limited are solved.

Description

Technical Field

[0001] The utility model relates to the field of guide wheel adjusting mechanisms, in particular to a cutting device and its guide wheel adjusting mechanism. Background Art

[0002] In the existing wire electrical discharge machining (WEDM) machines, generally, a copper wire winds around multiple guide wheels, and by winding and unwinding the copper wire, the guide wheels are driven to rotate by the copper wire; while the angle of the copper wire in traditional WEDM machines is generally fixed, and generally, multiple cutting machines are used to cut workpieces at different angles respectively. Some WEDM machines drive two guide wheels to rotate simultaneously by a motor to adjust the angle of the copper wire; thus, traditional cutting machines have problems of inconvenient cutting angle adjustment and limited angle adjustment range. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a guide wheel adjusting mechanism, which can drive the second fixed seat to rotate relative to the rotating seat by the lateral moving rod moving relative to the first fixed seat, thereby driving the cutting guide wheel to swing to a specific angle, so that a section of the cutting wire between two cutting guide wheels has an angular offset, and the cutting angle of the cutting device can be adjusted quickly.

[0004] The utility model also provides a cutting device, which is provided with the above-mentioned guide wheel adjusting mechanism.

[0005] To achieve the above object, the utility model adopts the following technical solutions:

[0006] A guide wheel adjusting mechanism includes: an adjusting frame, a movable frame assembly, a cutting guide wheel and a cutting wire;

[0007] The movable frame assembly is installed on the adjusting frame;

[0008] The movable frame assembly includes: a first fixed seat, a second fixed seat, a lateral moving rod, a lateral fixed rod and a rotating seat;

[0009] The first fixed seat is connected to the adjusting frame; the first fixed seat is provided with a horizontal adjusting hole; one end of the lateral moving rod is linearly movably limited in the horizontal adjusting hole, and the other end of the lateral moving rod is connected to the second fixed seat; part of the cutting guide wheels are installed on the second fixed seat; the second fixed seat is rotatably connected to the first rotating area of the rotating seat; one end of the lateral fixed rod is rotatably connected to the adjusting frame, and the other end of the lateral fixed rod is rotatably connected to the second rotating area of the rotating seat;

[0010] The cutting wire winds around the plurality of cutting guide wheels on the adjusting frame.

[0011] Optimally, it further includes: a locking member;

[0012] The first fixing seat is provided with a locking hole; the locking member is in threaded fit with the locking hole and extends into the horizontal adjustment hole to abut against the transverse movable rod, so as to limit the position of the transverse movable rod in the locking hole.

[0013] Optimally, the movable frame assembly includes: a support and guiding seat;

[0014] The support and guiding seat is mounted on the adjusting frame; the support and guiding seat is provided with a rod guiding groove extending horizontally; the transverse movable rod moves horizontally in the rod guiding groove.

[0015] Optimally, the rotating seat is provided with a wire passing hole, and the cutting wire passes through the wire passing hole.

[0016] Optimally, the second rotating area and the wire passing hole are located in the same plane of the rotating seat, and the wire passing hole is away from the linear extension direction of the transverse fixing rod.

[0017] Optimally, the cutting guide wheel includes: a wheel seat, a wheel body, a bearing and a threaded locking member;

[0018] The wheel seat is rotatably mounted on the rotating seat; the wheel seat is provided with a seat cavity;

[0019] One or more than two of the bearings are arranged in the seat cavity; the wheel body is provided with a wheel shaft and a wheel disc;

[0020] One end of the wheel shaft is connected to one side of the wheel disc, and the other end of the wheel shaft is fitted with the inner ring of the bearing; the outer ring of the bearing is fixed in the seat cavity; the wheel disc covers the opening at one end of the seat cavity, and the opening at the other end of the seat cavity is exposed from the rotating seat; the seat cavity is provided with a cavity baffle; the threaded hole of the threaded locking member is in threaded fit with the external thread structure of the wheel shaft, and the threaded locking member presses against the inner ring of the bearing; the outer ring of the bearing presses towards the direction of the cavity baffle.

[0021] Optimally, the cutting guide wheel further includes: an end cover and an outer plug;

[0022] The opening at one end of the seat cavity is provided with the cavity baffle, and the opening at the other end of the seat cavity is detachably installed with the end cover, and the end cover presses the outer ring of the bearing against the cavity baffle;

[0023] The rotating seat is provided with a rotating opening, and the wheel seat is rotatably mounted in the rotating opening; the outer plug is detachably installed in the rotating opening to cover the opening at one end of the seat cavity.

[0024] Optimally, the cutting guide wheel further includes: a wheel shell;

[0025] The shell cavity of the wheel hub is sleeved on the outside of the wheel seat; the wheel disc is provided with the wire driving groove, and the cutting wire winds through the wire driving groove; the shell cavity sleeve extends to the wheel disc, and the inner wall of the shell cavity sleeve and the wheel disc form a wheel surface gap; the shell cavity is provided with a plurality of external drainage ports, which are located on the side of the wheel disc away from the wheel shaft.

[0026] Optimally, a pair of the movable frame assemblies are installed on the adjusting frame, and the cutting guide wheels are installed on the second fixed seats of each of the movable frame assemblies; the cutting wire winds through the cutting guide wheels of the two movable frame assemblies.

[0027] A cutting device is provided with the above-mentioned guide wheel adjusting mechanism.

[0028] Compared with the prior art, one of the above technical solutions has the following beneficial effects:

[0029] This solution provides a guide wheel adjusting mechanism, which can drive the second fixed seat to rotate relative to the rotating seat by the relative movement of the transverse movable rod relative to the first fixed seat, thereby driving the cutting guide wheel to swing to a specific angle, so that a section of the cutting wire winding between the two cutting guide wheels has an angular offset, and the cutting angle of the cutting device can be quickly adjusted, solving the problems of inconvenient adjustment of the cutting angle and limited adjustment angle range of the traditional cutting device. Description of the Drawings

[0030] Figure 1 is the front view structural schematic diagram of one embodiment of the guide wheel adjusting mechanism;

[0031] Figure 2 is the structural schematic diagram of one embodiment of the guide wheel adjusting mechanism;

[0032] Figure 3 is Figure 2 the enlarged view of part A in

[0033] Figure 4 is the partial structural schematic diagram of the connection of the first fixed seat, the transverse movable rod and the transverse fixed rod;

[0034] Figure 5 is the partial structural schematic diagram of the connection of the second fixed seat, the transverse movable rod and the transverse fixed rod;

[0035] Figure 6 is the structural schematic diagram of one embodiment of the cutting guide wheel;

[0036] Figure 7 is the sectional structural schematic diagram of one embodiment of the cutting guide wheel.

[0037] Wherein:

[0038] Adjusting frame 1, movable frame assembly 2, cutting guide wheel 3, cutting wire 4; locking member 5;

[0039] The first fixed seat 21, the second fixed seat 22, the transverse movable rod 23, the transverse fixed rod 24, the rotating seat 25; the supporting and guiding seat 26;

[0040] Horizontal adjustment hole 211; locking hole 212; rod guiding groove 261; wire passing hole 251, first rotating area 252, second rotating area 253; rotating opening 254;

[0041] Wheel seat 31, wheel body 32, bearing 33, threaded locking member 34, end cover 35, outer plug 36; wheel shell 37;

[0042] Seat cavity 311; cavity baffle 312;

[0043] Wire driving groove 320; wheel axle 321, wheel disc 322; external drain port 371; wheel surface clearance 372; shell cavity 373. Detailed implementation manners

[0044] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention, and should not be construed as a limitation to the present invention.

[0045] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", "inner side", "outer side", "inner end", "outer end", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features, used to distinguish and describe features, without order or weight. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is more than two.

[0046] As Figure 1-7 , a guide wheel adjusting mechanism includes: an adjusting frame 1, a movable frame assembly 2, a cutting guide wheel 3 and a cutting wire 4;

[0047] The movable frame assembly 2 is installed on the adjusting frame 1;

[0048] The movable frame assembly 2 includes: a first fixed seat 21, a second fixed seat 22, a transverse movable rod 23, a transverse fixed rod 24, and a rotating seat 25;

[0049] The first fixed seat 21 is connected to the adjusting frame 1; the first fixed seat 21 is provided with a horizontal adjustment hole 211; one end of the transverse movable rod 23 is linearly movably limited in the horizontal adjustment hole 211, and the other end of the transverse movable rod 23 is connected to the second fixed seat 22; part of the cutting guide wheels 3 are installed on the second fixed seat 22; the second fixed seat 22 is rotatably connected to the first rotation area 252 of the rotating seat 25; one end of the transverse fixed rod 24 is rotatably connected to the adjusting frame 1, and the other end of the transverse fixed rod 24 is rotatably connected to the second rotation area 253 of the rotating seat 25;

[0050] The cutting wire 4 passes around a plurality of the cutting guide wheels 3 on the adjusting frame 1.

[0051] This solution provides a guide wheel adjustment mechanism. By relatively moving the transverse movable rod 23 with respect to the first fixed seat 21, it can drive the second fixed seat 22 to rotate relative to the rotating seat 25, thereby driving the cutting guide wheel 3 to swing to a specific angle, causing the section of the cutting wire 4 passing between two cutting guide wheels 3 to have an angular offset, and can quickly adjust the cutting angle of the cutting device, solving the problems of inconvenient cutting angle adjustment and limited adjustment angle range of traditional cutting devices.

[0052] Specifically, the cutting guide wheel 3 can be directly connected to the adjusting frame 1 or indirectly connected to the adjusting frame 1 through other mechanisms (for example, connected to the adjusting frame 1 through the movable frame assembly 2); in the initial state, the cutting guide wheel 3 on the movable frame assembly 2 can be vertically aligned or horizontally aligned with the cutting guide wheel 3 outside the movable frame assembly 2, so as to keep the cutting wire 4 vertical or horizontal when passing around the two cutting guide wheels 3; and when the workpiece needs to be obliquely cut, the transverse movable rod 23 can be adjusted to move linearly. Specifically, the first fixed seat 21 is connected to the adjusting frame 1, the second fixed seat 22 is rotatably connected to the adjusting frame 1, and the transverse movable rod 23 can be movably adjusted and limited in the horizontal adjusting hole 211 of the first fixed seat 21, that is, it can move and freely adjust the position of the transverse movable rod 23 in the horizontal adjusting hole 211 before being limited; and the movement of the transverse movable rod 23 drives the second fixed seat 22 to move. Since the second fixed seat 22 is rotatably connected to the first rotation area 252 of the rotating seat 25, and the second rotation area 253 of the rotating seat 25 is rotatably connected to the transverse fixed rod 24, and the second fixed seat 22 is rotatably connected to the adjusting frame 1, the linear movement of the second fixed seat 22 will drive the rotating seat 25 to swing around the second rotation area 253 as the axis, so as to adjust the position of the cutting guide wheel 3 of a certain movable frame assembly 2. The cutting guide wheel 3 of this movable frame assembly 2 has a relative displacement with the other cutting guide wheels 3, thereby driving the cutting wire 4 passing around the two cutting guide wheels 3 to deflect at an angle, so that the cutting wire 4 is adjusted to an inclined state and cuts the workpiece at an inclined angle.

[0053] In some embodiments, some of the cutting guide wheels 3 are only installed on the adjusting frame 1, and some of the cutting guide wheels 3 are installed on the movable frame assembly 2;

[0054] In some embodiments, a pair of the movable frame assemblies 2 are installed on the adjusting frame 1, and the cutting guide wheel 3 is installed on the second fixed seat 22 of each movable frame assembly 2; the cutting wire 4 passes around the cutting guide wheels 3 of the two movable frame assemblies 2.

[0055] The movable frame assemblies 2 are preferably arranged in pairs, and each movable frame assembly 2 is correspondingly installed with a cutting guide wheel 3; thus, when adjusting the angle, only the transverse movable rod 23 of one of the movable frame assemblies 2 can be adjusted, or the transverse movable rods 23 of the two movable frame assemblies 2 can be adjusted; when the transverse movable rods 23 of the two movable frame assemblies 2 move synchronously by a specific distance, the angle of the cutting wire 4 can remain unchanged, which is mainly used to adjust the horizontal or vertical position of the cutting wire 4 during cutting; when the distances moved by the transverse movable rods 23 of the two movable frame assemblies 2 are different, for example, when the transverse movable rod 23 of one of the movable frame assemblies 2 is adjusted, the angle of the cutting wire 4 can be inclined, which is mainly used to adjust a specific inclined cutting angle.

[0056] One end of the horizontal movable rod 23 is linearly and movably adjusted and limited in the horizontal adjustment hole 211, which can be achieved by known connection methods, such as fixture fixation, snap fixation, etc., as long as the horizontal movable rod 23 can be limited after moving in the horizontal adjustment hole 211.

[0057] In the optimal embodiment, it further includes: a locking member 5;

[0058] The first fixing seat 21 is provided with a locking hole 212; the locking member 5 is in threaded fit with the locking hole 212 and extends into the horizontal adjustment hole 211 to abut against the horizontal movable rod 23 to limit the position of the horizontal movable rod 23 in the locking hole 212.

[0059] In this solution, it is preferably to use the threaded structure of the locking member 5 to limit the horizontal movable rod 23. When the locking member 5 is loosened, the horizontal movable rod 23 can freely move in the horizontal adjustment hole 211, so as to adjust the angle of the second fixing seat 22 and its cutting guide wheel 3; when the position of the horizontal movable rod 23 reaches a specific position, the locking member 5 can be tightened to make the locking member 5 in complete threaded fit with the locking hole 212, thereby limiting the position of the horizontal movable rod 23 in the horizontal adjustment hole 211.

[0060] Among them, the locking member 5 is a mechanism with a threaded structure, such as a screw, a bolt or a similar structure.

[0061] Optimally, the movable frame assembly 2 includes: a support guide seat 26;

[0062] The support guide seat 26 is installed on the adjustment frame 1; the support guide seat 26 is provided with a horizontally extending rod guide groove 261; the horizontal movable rod 23 moves horizontally in the rod guide groove 261.

[0063] The support guide seat 26 is installed on the adjustment frame 1, which is provided with a rod guide groove 261, which can be used to guide the horizontal movement of the horizontal movable rod 23 and can also provide a supporting effect for the horizontal movable rod 23 at multiple positions of the horizontal movable rod 23 to improve the movement smoothness of the horizontal movable rod 23.

[0064] Optimally, the rotating seat 25 is provided with a wire passing hole 251, and the cutting wire 4 passes through the wire passing hole 251.

[0065] The cutting wire 4 passes through the wire passing hole 251, and the wire passing hole 251 surrounds the outer periphery of the cutting wire 4, which can limit the movement range of the cutting wire 4, avoid the cutting wire 4 deviating from the preset range, and improve the cutting stability.

[0066] The second rotation area 253 and the wire passing hole 251 are located in the same plane of the rotation seat 25, and the wire passing hole 251 is away from the linear extension direction of the transverse fixing rod 24.

[0067] The second rotation area 253 and the wire passing hole 251 are located in the same plane of the rotation seat 25. Specifically, it can be the bottom side of the rotation seat 25, and the wire passing hole 251 is located outside the linear extension direction of the transverse fixing rod 24. Therefore, the wire passing hole 251 and the transverse fixing rod 24 are not on the same straight line. The connection area between the transverse fixing rod 24 and the rotation seat 25 can be larger, and the connection tightness is higher, without affecting the size of the wire passing hole 251.

[0068] Optimally, the cutting guide wheel 3 includes: a wheel seat 31, a wheel body 32, a bearing 33, and a threaded locking member 34;

[0069] The wheel seat 31 is rotatably mounted on the rotation seat 25; the wheel seat 31 is provided with a seat cavity 311;

[0070] One or more than two of the bearings 33 are arranged in the seat cavity 311; the wheel body 32 is provided with a wheel shaft 321 and a wheel disc 322;

[0071] One end of the wheel shaft 321 is connected to one side of the wheel disc 322, and the other end of the wheel shaft 321 is fitted to the inner ring of the bearing 33; the outer ring of the bearing 33 is fixed to the seat cavity 311; the wheel disc 322 covers the opening at one end of the seat cavity 311, and the opening at the other end of the seat cavity 311 is exposed from the rotation seat 25; the seat cavity 311 is provided with a cavity baffle 312; the threaded hole of the threaded locking member 34 is threadedly engaged with the external thread structure of the wheel shaft 321, and the threaded locking member 34 presses against the inner ring of the bearing 33; the outer ring of the bearing 33 presses towards the direction of the cavity baffle 312.

[0072] The wheel body 32 is provided with a wheel axle 321 and a wheel disc 322. The wheel axle 321 can extend into the seat cavity 311 and be connected to the bearing 33 in the seat cavity 311, so that the wheel body 32 is rotatably limited in the seat cavity 311. In this solution, the fixing stability of the wheel body 32 can be further improved by the threaded lock 34, so that the wheel disc 322 fully presses the opening of the seat cavity 311. When the outer ring of the bearing 33 is actively or passively pressed against the cavity baffle 312, the position of the bearing 33 is fixed. At the same time, the wheel axle 321 of this solution can extend into the inner ring of the bearing 33 and cooperate with the external thread structure of the wheel axle 321 through the threaded hole of the threaded lock 34. When the thread fit is complete, the threaded lock 34 presses against the inner ring of the bearing 33, and the positions of the wheel axle 321 and the inner ring of the bearing 33 are relatively fixed, so that the position of the wheel body 32 is fixed. Thus, it is convenient to disassemble the wheel body 32 and the fixing stability of the wheel body 32 is improved. At the same time, since the outer ring of the bearing 33 in this solution is pressed against the cavity baffle 312, this solution can use either a single bearing 33 or a double bearing 33. The double bearings 33 can be arranged adjacent to each other or at intervals (that is, the two bearings 33 are separated by an intermediate spacer to extend the distance between the bearings 33 and make the movement of different positions of the wheel axle 321 smoother).

[0073] Optimally, the cutting guide wheel 3 further includes: an end cap 35 and an outer plug 36;

[0074] One end opening of the seat cavity 311 is provided with the cavity baffle 312, and the other end opening of the seat cavity 311 is detachably installed with the end cap 35, and the end cap 35 presses the outer ring of the bearing 33 against the cavity baffle 312;

[0075] The rotating seat 25 is provided with a rotating opening 254, and the wheel seat 31 is rotatably installed in the rotating opening 254; the outer plug 36 is detachably installed in the rotating opening 254 to cover the opening at one end of the seat cavity 311.

[0076] In this solution, the bearing 33 can be first installed in the seat cavity 311, with the bearing 33 abutted against the cavity baffle 312. Then, the wheel main body 32 is installed, such that the wheel shaft 321 of the wheel main body 32 passes through the inner ring of the bearing 33. Next, the threaded lock 34 is installed in threaded engagement with the external thread of the wheel shaft 321, with the threaded lock 34 abutted against the inner ring of the bearing 33, thus completing the installation of the position of the wheel main body 32. In this solution, the step of installing the end cover 35 can preferably be taken as the second last installation step. The end cover 35 is detachably installed at the opening of the seat cavity 311 away from the cavity baffle 312, and it presses the outer ring of the bearing 33 against the cavity baffle 312, thereby locking the position of the outer ring of the bearing 33. In this solution, the step of installing the outer plug 36 can be taken as the last installation step. The outer plug 36 is installed at the rotation port 254 of the rotating seat 25, thereby covering the opening of the seat cavity 311, improving the aesthetics of the guide wheel adjustment mechanism, and preventing external impurities from entering the seat cavity 311.

[0077] When the end cover 35 needs to be disassembled, the outer plug 36 can be first removed, and then a tool is inserted into the opening of the seat cavity 311 to remove the end cover 35. Among them, the end cover 35 is installed at the opening of the seat cavity 311, and it can be a known detachable installation method, as long as the outer ring position of the bearing 33 is pressed against the cavity baffle 312, such as threaded fixation (for example, the outer thread of the end cover 35 is in threaded fit with the inner thread of the seat cavity 311), screw fixation (for example, screws are fixed to the seat cavity 311), clamp fixation (for example, the clamping end of the clamp clamps the end cover 35 to the seat cavity 311), mechanical device pressing (for example, pressing through a cylinder or an oil cylinder), etc.

[0078] Optimally, the cutting guide wheel 3 further includes: a wheel housing 37;

[0079] The housing cavity 373 of the wheel housing 37 is sleeved on the outside of the wheel seat 31; the wheel disc 322 is provided with the wire driving groove 320, and the cutting wire 4 winds through the wire driving groove 320; the housing cavity 373 sleeve extends to the wheel disc 322, and the inner wall of the housing cavity 373 sleeve forms a wheel surface gap 372 with the wheel disc 322; the housing cavity 373 is provided with a plurality of external drainage ports 371, located on the side of the wheel disc 322 away from the wheel shaft 321.

[0080] When it is necessary to drive the cutting guide wheel 3 to rotate, it is only necessary to wind the cutting wire 4 around the wire driving groove 320 of the cutting guide wheel 3. The winding and unwinding of the cutting wire 4 can drive the wire driving groove 320 to rotate, thereby driving the wheel body 32 to rotate; and under the rotation of the cutting guide wheel 3, it is necessary to use a coolant to cool the cutting guide wheel 3, especially the part of the wheel body 32; for this purpose, in this solution, the wire driving groove 320 is provided on the wheel disc 322. The wire driving groove 320 of the wheel disc 322 is used to accommodate the cutting wire 4. At the same time, the wheel disc 322 also forms a wheel surface gap 372 with the inner wall of the shell cavity 373 sleeve; in this solution, the output position of the coolant can be set above the wheel disc 322, and the top of the wire driving groove 320 is close to the output position of the coolant; after the coolant falls into the wire driving groove 320, the coolant can flow along the length direction of the wire driving groove 320, which can cool the wire driving groove 320 and its cutting wire 4; at the same time, the coolant can overflow outside the wire driving groove 320 and transfer from the wheel disc 322 to the wheel surface gap 372, and then transfer to the side of the wheel disc 322 away from the wheel shaft 321; the coolant flows through the wheel disc 322 away from the wheel shaft 321, thereby cooling the entire wheel body 32; the shell cavity 373 is provided with a plurality of external drain ports 371 on one side of the wheel body 32, and the external drain ports 371 can lead the coolant of the wheel body 32 to the outside, thereby preventing the coolant from accumulating in the cutting guide wheel 3. Thus, this solution solves the problem that the cutting guide wheel 3 is prone to water accumulation after long-term use.

[0081] A cutting device is provided with the above-described guide wheel adjustment mechanism, specifically an electric discharge wire cutting device.

[0082] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A guide wheel adjustment mechanism, characterized in that: include: Adjusting frame, movable frame assembly, cutting guide wheel and cutting line; The movable frame assembly is installed on the adjustment frame; The movable frame assembly comprises: a first fixed seat, a second fixed seat, a transverse movable rod, a transverse fixed rod and a rotating seat; The first fixed seat is connected to the adjustment frame; the first fixed seat is provided with a horizontal adjustment hole; one end of the transverse movable rod is linearly movable and limited to the horizontal adjustment hole, and the other end of the transverse movable rod is connected to the second fixed seat; part of the cutting guide wheel is installed on the second fixed seat; the second fixed seat is rotatably connected to the first rotation area of ​​the rotating seat; one end of the transverse fixed rod is rotatably connected to the adjustment frame, and the other end of the transverse fixed rod is rotatably connected to the second rotation area of ​​the rotating seat; The cutting wire is wound around the plurality of cutting guide wheels of the adjusting frame.

2. A guide wheel adjustment mechanism according to claim 1, characterized in that: Also includes: Locking parts; The first fixing seat is provided with a locking hole; the locking piece is threadedly matched with the locking hole and extends into the horizontal adjustment hole to abut against the transverse movable rod to limit the position of the transverse movable rod in the locking hole.

3. A guide wheel adjustment mechanism according to claim 2, characterized in that: The movable frame assembly comprises: a support guide seat; The support guide seat is installed on the adjustment frame; the support guide seat is provided with a horizontally extending rod guide groove; the transverse movable rod moves horizontally in the rod guide groove.

4. A guide wheel adjustment mechanism according to claim 1, characterized in that: The rotating seat is provided with a wire passing hole, and the cutting wire passes through the wire passing hole.

5. A guide wheel adjustment mechanism according to claim 4, characterized in that: The second rotating area and the wire-passing hole are located in the same plane of the rotating seat, and the wire-passing hole is far away from the linear extension direction of the transverse fixing rod.

6. A guide wheel adjustment mechanism according to claim 1, characterized in that: The cutting guide wheel comprises: a wheel seat, a wheel body, a bearing and a thread locking member; The wheel seat is rotatably mounted on the rotating seat; the wheel seat is provided with a seat cavity; A single or more than two bearings are arranged in the seat cavity; the wheel body is provided with a wheel axle and a wheel disc; One end of the wheel axle is connected to one side of the wheel disc, and the other end of the wheel axle is matched with the inner ring of the bearing; the outer ring of the bearing is fixed to the seat cavity; the wheel disc covers the opening at one end of the seat cavity, and the other end opening of the seat cavity is exposed from the rotating seat; the seat cavity is provided with a cavity baffle; the threaded hole of the threaded locking element is threadedly matched with the external thread structure of the wheel axle, and the threaded locking element is pressed against the inner ring of the bearing; the outer ring of the bearing is pressed toward the cavity baffle.

7. A guide wheel adjustment mechanism according to claim 6, characterized in that: The cutting guide wheel also includes: an end cap and an outer plug; The cavity baffle is disposed at one end opening of the seat cavity, and the end cover is detachably mounted at the other end opening of the seat cavity, and the end cover presses the outer ring of the bearing against the cavity baffle; The rotating seat is provided with a rotating opening, and the wheel seat is rotatably mounted on the rotating opening; the outer plug is detachably mounted on the rotating opening to cover the opening at one end of the seat cavity.

8. A guide wheel adjustment mechanism according to claim 6, characterized in that: The cutting guide wheel also includes: a wheel shell; The shell cavity of the wheel shell is arranged on the outer side of the wheel seat; the wheel disc is provided with a wire drive groove, and the cutting wire is wound around the wire drive groove; the shell cavity sleeve extends to the wheel disc, and the inner wall of the shell cavity sleeve forms a wheel surface gap with the wheel disc; the shell cavity is provided with a plurality of external drainage outlets, which are located on a side away from the wheel disc and away from the wheel axle.

9. A guide wheel adjustment mechanism according to any one of claims 1 to 8, characterized in that: A pair of movable frame assemblies are installed on the adjustment frame, and the second fixing seat of each movable frame assembly is installed with the cutting guide wheel; the cutting line is wound around the cutting guide wheels of the two movable frame assemblies.

10. A cutting device, characterized in that: A guide wheel adjustment mechanism according to any one of claims 1 to 9 is provided.

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