Hard alloy tooth dividing machine

Abstract

The utility model belongs to the technical field of band saw blade production equipment, and particularly relates to a hard alloy tooth dividing machine which comprises a working table, an operation panel and a plurality of function modules are arranged on the working table, and an electric control system is arranged in the working table. The front-back guiding and correcting part is used for guiding and correcting the saw blade which enters or is pushed out; the tooth stirring and belt conveying part is arranged on the workbench, and the tooth stirring and belt conveying part is driven by a servo motor and a linear module to stir and convey a saw blade; the tooth dividing part is arranged on the workbench, and the tooth dividing part is driven by a servo motor and a linear electric cylinder to divide teeth of the saw blade; and the saw band clamping part is arranged on the workbench, and the saw band clamping part is driven by a servo motor and a linear electric cylinder to clamp a saw blade. Wherein the tooth shifting and band feeding part, the tooth dividing part and the saw band clamping part are all controlled through the operation panel and the electric control system, and compared with the prior art, the tooth dividing effect of the saw blade is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of band saw blade production equipment, in particular to a hard alloy gear dividing machine. Background Art

[0002] Band saw blades: A tough, sharp-toothed saw blade stretched across a frame, used for cutting metal and other shaped materials. Band saw blades typically undergo a series of steps during production, including tooth splitting, which involves milling a bimetallic saw blade so that the teeth tilt left or right in a pattern.

[0003] In the existing tooth splitting process, the tooth splitting method usually manufactures a fixed tooth splitting mold according to the saw blade tooth shape, and the fixed tooth splitting form is regularly and repeatedly produced. The tooth splitting mold has high manufacturing precision requirements, is complex to manufacture, has high cost, and has a cumbersome mold trial adjustment process. In addition, the tooth splitting is performed by beat, which is limited by the accuracy of the saw band itself and the accuracy of the tooth splitting machine transmission mechanism. The tooth splitting accuracy fluctuates and the alternating change of large and small tooth splitting amounts cannot be performed. At the same time, the saw band clamping method in the existing structure adopts hydraulic clamping or sets a fixed gap to allow the saw blade to pass through. Since the carbide saw blade has greater elasticity, when the saw blade is moved to position, the greater elasticity often causes a slight offset in positioning or clamping, thereby changing the tooth splitting position and causing the tooth splitting amount to change. The accuracy cannot be achieved, further reducing the tooth splitting effect, so it is necessary to make improvements. Utility Model Content

[0004] The purpose of the utility model is to provide a carbide tooth-splitting machine to improve the tooth-splitting effect of a band saw blade in response to the above-mentioned technical problems.

[0005] In view of this, the present invention provides a cemented carbide gear-splitting machine, comprising:

[0006] A workbench, wherein an operation panel and several functional modules are provided on the workbench, and an electric control system is provided inside the workbench;

[0007] Also includes:

[0008] Front and rear guide parts, which are used to guide and align the saw blade that enters or is pushed out;

[0009] The tooth-feeding part is arranged on the workbench and drives the saw blade through a servo motor and a linear module;

[0010] A tooth dividing portion, the tooth dividing portion is arranged on a workbench and is driven by a servo motor and a linear electric cylinder to divide the teeth of the saw blade;

[0011] The saw band clamping part is arranged on the workbench and is driven by a servo motor and a linear electric cylinder to clamp the saw blade.

[0012] The tooth-shifting and belt-feeding part, the tooth-splitting part and the saw band clamping part are all controlled by an operation panel and an electric control system.

[0013] In the present technical solution, when the saw blade is performing the tooth segmentation process, the target data is first input through the operation panel, and the electric control system controls each servo motor and linear electric cylinder / linear module through the data input on the operation panel. The saw blade enters from the front and rear guide parts and moves to the tooth stripping and feeding part, and the tooth stripping and feeding part sends the saw blade to the tooth segmentation part. Then, the saw band clamping part clamps the saw blade, and the tooth segmentation part performs the tooth segmentation operation on the saw blade. After one tooth segmentation is completed, the tooth stripping and feeding part continues to send the saw blade, and so on. Finally, the saw blade is pushed out from the front and rear guide parts. Compared with the prior art, the present utility model The structure is simple, the rigidity is good, the tooth division status can be visually observed, and each transmission part adopts the mode of servo motor + linear electric cylinder / linear module, which has high precision and good stability. According to different tooth types and tooth division requirements, the target data is input through the operation panel to set the program production. The tooth division amount is accurate and the size of the tooth division amount can be set arbitrarily, which effectively improves the tooth division effect of the saw blade. After entering the automatic tooth division mode, it can be unmanned and the saw belt will automatically stop and wait after the tooth division is completed. Servo clamping is used instead of hydraulic clamps to improve production efficiency and reduce hydraulic failure downtime.

[0014] In the above technical solution, further comprising:

[0015] The damping part is arranged on the workbench and is used to provide a resistance to the saw blade during the feeding process.

[0016] In the above technical solution, further comprising:

[0017] The saw band positioning and clamping part is arranged on the workbench and is used for guiding and clamping the saw blade.

[0018] In the above technical solution, further, the toothed belt feeding portion further includes:

[0019] The pusher claw is driven by a servo motor and a linear module to move back and forth to push the saw blade. The pusher claw can drive the saw blade forward one tooth position when it moves back and forth once.

[0020] In the above technical solution, further, the toothed portion further includes:

[0021] A toothed slider, the toothed slider comprising a front slider and a rear slider;

[0022] Single-tooth segmented tooth molds, two of which are respectively arranged on the side surfaces of the front slider and the rear slider on opposite sides;

[0023] Among them, the tooth-splitting slider is slidably set on the functional module, and the front slider and the rear slider are driven to move back and forth by the corresponding servo motor and the linear electric cylinder respectively. The front slider and the rear slider move alternately, and the two single-tooth tooth-splitting modules separate the teeth of the saw blade as the front slider and the rear slider move.

[0024] In the above technical solution, further, the saw band clamping portion further includes:

[0025] A clamping jaw, which is provided on the functional module and located below the toothed slider, and includes a fixed jaw and a movable jaw;

[0026] A plug, the plug is wedge-shaped and is driven to move by a servo motor and a linear electric cylinder;

[0027] an elastic reset member, the elastic reset member being arranged on the functional module;

[0028] The movable jaw can be squeezed by the iron plug to move close to the fixed jaw to clamp the saw blade, and the elastic reset member is connected to the movable jaw to drive the movable jaw to reset to release the saw blade.

[0029] In the above technical solution, further, the damping part further includes:

[0030] A fixed friction block, wherein the fixed friction block is arranged on the functional module;

[0031] A movable friction block, which is movably arranged on the functional module and is driven to move by a friction block cylinder;

[0032] The movable friction block can be driven by a cylinder to approach the fixed friction block and clamp the saw blade. The friction block cylinder is controlled by an operating panel and an electronic control system.

[0033] In the above technical solution, further, the saw band positioning and clamping portion further includes:

[0034] A width positioning support plate, which is detachably mounted on the functional module and is used to support the bottom of the saw blade. Support rollers are provided at both ends of the width positioning support plate.

[0035] A bearing seat, the bearing seat includes a fixed bearing seat and a movable bearing seat, and the movable bearing seat is driven to move by a bearing seat cylinder;

[0036] A clamping bearing, wherein the clamping bearing is arranged on the fixed bearing seat and the movable bearing seat;

[0037] The bearing seat is arranged on the functional module and located above the width positioning support plate. The fixed bearing seat and the movable bearing seat are respectively located on both sides of the saw blade. The clamping bearing has an inclined angle for generating a downward cutting force when the saw blade is fed.

[0038] The beneficial effects of the utility model are:

[0039] 1. The servo motor + linear electric cylinder / linear module mode has high precision and good stability. According to different tooth profiles and tooth spacing requirements, the target data is input through the operation panel to set the program production. The tooth spacing accuracy is high and the tooth spacing size can be set arbitrarily, which effectively improves the tooth spacing effect of the saw blade.

[0040] 2. Through the setting of the damping part, the saw blade needs to overcome the resistance to move forward, which can stabilize the position of the saw blade and prevent the saw blade from drifting forward or backward due to the elastic force of the saw blade;

[0041] 3. Through the setting of the saw blade positioning clamping part, saw blades of different widths only need to replace the corresponding standard positioning plate. This is simple and reliable, avoiding the batch error caused by workers adjusting the height, thus achieving uniform quality.

[0042] 4. Through the setting of the saw band clamping part, the position of the clamping jaws can be accurately controlled to release and clamp, with a fast response speed, overcoming the problems of increased system oil pressure, multiple pipelines, oil leakage, complex system and high failure rate caused by frequent operation of the hydraulic cylinder;

[0043] 5. Through the setting of the tooth-feeding part, the claw on the linear module pushes the saw teeth to complete the feeding of the saw blade. The feeding stroke is set by the input of the operation panel. The feeding positioning is accurate and there will be no cumulative error caused by the overly long transmission chain of the original structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0045] Figure 1 It is a schematic structural diagram of a specific implementation method of the present utility model.

[0046] Figure 2 This is a schematic diagram of the main view structure of the utility model.

[0047] Figure 3 It is a schematic diagram of the top view structure of the utility model.

[0048] Figure 4 This is a schematic diagram of the plug iron structure of the utility model.

[0049] Figure 5 This is a schematic diagram of the structure of the pusher claw of the utility model.

[0050] Figure 6 This is a schematic diagram of the width positioning support plate structure of the utility model.

[0051] Figure 7 It is a schematic diagram of the vertical sectional structure of the utility model.

[0052] Figure 8 It is a schematic diagram of the horizontal cross-sectional structure of the utility model.

[0053] The marks in the figure are:

[0054] 1. Workbench; 2. Operation panel; 3. Functional module; 4. Front and rear guide parts; 40. Front guide wheel; 41. Rear guide wheel; 5. Tooth-shifting and belt-feeding part; 50. Shifting claw; 6. Tooth-splitting part; 60. Front slider; 61. Rear slider; 62. Single-tooth tooth-splitting die; 7. Saw band clamping part; 70. Fixed jaw; 71. Movable jaw; 72. Iron plug; 8. Damping part; 80. Fixed friction block; 81. Movable friction block; 82. Friction block cylinder; 9. Saw band positioning and clamping part; 90. Width positioning support plate; 91. Bearing seat; 92. Support roller; 93. Bearing seat cylinder; 94. Clamping bearing. DETAILED DESCRIPTION

[0055] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0056] In the description of this application, it should be noted that the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods and equipment known to ordinary technicians in the relevant fields may not be discussed in detail, but where appropriate, the technologies, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0057] Workbench, operation panel and electronic control system

[0058] This embodiment provides a conventional workbench 1 in the prior art. An operation panel 2 and an electric control system are provided, and several functional modules 3 are provided on the workbench 1. The operation panel 2 is installed on the workbench 1, and the electric control system is installed inside the workbench 1.

[0059] Moreover, the operation panel 2 and the electronic control system are conventional structures in this field. The functional module 3 is a conventional detachable mounting base, support base, mounting frame or support frame, which is generally fixed to the surface of the workbench 1 by bolts and screws. The functional module 3 has various mounting holes, positioning holes, screw holes, etc. for installing various component units.

[0060] Front and rear guide parts

[0061] The front and rear guiding parts 4 are used to guide and align the saw blade entering or being pushed out and to connect the material release and collection system. The front and rear guiding parts 4 include a front guide wheel 40 and a rear guide wheel 41 respectively arranged on the feeding side and the discharging side of the workbench 1. The saw blade enters from the front guide wheel 40 and is pushed out by the rear guide wheel 41.

[0062] Tooth feeding part

[0063] The tooth-feeding belt part 5 is arranged on the workbench 1. The tooth-feeding belt part 5 is driven by a servo motor and a linear module to feed the saw blade. The tooth-feeding belt part 5 also includes: a tooth 50. The tooth 50 is driven by a servo motor and a linear module to move back and forth to feed the saw blade. The tooth 50 can drive the saw blade forward one tooth position when it moves back and forth once.

[0064] Moreover, the servo motor and linear module of the tooth feeding part 5 are installed on the corresponding functional module 3, and the finger 50 is installed on the linear module. The finger 50 is connected to the linear module through a conventional connecting seat. The finger 50 and the connecting seat are movably connected. The finger 50 can rotate around the axis. The finger 50 is inclined under the action of gravity and the front end of the finger 50 is naturally placed on the saw blade. The front end of the finger 50 is in a shape that matches the tooth groove on the saw blade. The finger can be passively lifted up under the obstruction of the saw blade teeth during the reciprocating movement, and can move the saw blade forward under the obstruction of the saw blade tooth groove during the forward stroke.

[0065] The tooth-feeding part 5 uses a servo motor + linear module mode, and pushes the saw teeth through the pusher claw 50 on the linear module to complete the feeding of the saw blade. The feeding stroke of the pusher claw 50 is set by the input of the operation panel 2. The operation panel 2 feeds back the signal to the electronic control system according to the input setting. The electronic control system controls the operation of the servo motor and the linear module to drive the operation of the pusher claw 50. The feeding positioning is accurate and there will be no cumulative error caused by the overly long transmission chain of the original structure.

[0066] Gear section

[0067] The tooth-splitting portion 6 is disposed on the workbench 1 and is driven by a servo motor and a linear electric cylinder to separate the teeth of the saw blade. The tooth-splitting portion 6 also includes a tooth-splitting slider, which includes a front slider 60 and a rear slider 61; and a single-tooth tooth-splitting die 62, which has two teeth and is disposed on opposite sides of the front slider 60 and the rear slider 61.

[0068] Among them, the tooth-splitting slider is slidingly set on the functional module 3, and the front slider 60 and the rear slider 61 are driven to move back and forth by the corresponding servo motor and linear electric cylinder respectively. The front slider 60 and the rear slider 61 move alternately, and the two single-tooth tooth-splitting molds 62 separate the teeth of the saw blade as the front slider 60 and the rear slider 61 move.

[0069] Moreover, the toothed slider is slidably mounted on the functional module 3 in a conventional manner, such as by installing a guide rail on the functional module 3 , and the toothed slider is connected to the guide rail and is thus slidably mounted on the functional module 3 .

[0070] The tooth division part 6 adopts the mode of servo motor + linear electric cylinder, and is composed of two parts: front / rear sliders 61. The linear electric cylinder pushes the tooth division sliders. A single-tooth tooth division die 62 is installed on each of the front / rear sliders 61. The order of tooth division and the amount of tooth division are set through the operation panel 2. No manual mechanical adjustment is required. It is intuitive and accurate. Any tooth division form and tooth division amount can be achieved by inputting numerical values.

[0071] Saw blade clamping part

[0072] The saw band clamping unit 7 is mounted on the workbench 1 and is driven by a servo motor and a linear electric cylinder to clamp the saw blade. The saw band clamping unit 7 also includes: a clamping jaw, which is mounted on the functional module 3 and located below the tooth slider. The clamping jaw includes a fixed jaw 70 and a movable jaw 71; a wedge-shaped stopper 72, which is driven and moved by a servo motor and a linear electric cylinder; and an elastic return element, which is mounted on the functional module 3.

[0073] The movable jaw 71 can be squeezed by the iron plug 72 to move close to the fixed jaw to clamp the saw blade, and the elastic reset member is connected to the movable jaw 71 to drive the movable jaw 71 to reset to release the saw blade.

[0074] Moreover, the movable jaw 71 and the fixed jaw 70 are both installed on the functional module 3 through guide rails. The fixed jaw 70 is fixed on the functional module 3 under normal circumstances. The fixed jaw 70 is connected to the functional module 3 through conventional bolts and nuts. By adjusting the bolts and nuts, the fixed jaw 70 can be driven to move along the guide rail to adjust the position of the fixed jaw 70. The side of the movable jaw 71 that contacts the iron plug 72 is in the shape of an inclined surface that matches the surface of the iron plug 72. The elastic reset part can be a conventional elastic telescopic rod or a spring, etc.

[0075] The saw band clamping part 7 is realized by using a servo motor + linear electric cylinder to drive the plug iron 72. The servo motor + linear electric cylinder can accurately control the position of the clamping jaws to be released and clamped, with a fast response speed, overcoming the problems of increased system oil pressure, multiple pipelines, oil leakage, complex system and high failure rate caused by frequent operation of the hydraulic cylinder.

[0076] Damping part

[0077] The damping unit 8 is provided on the workbench 1 to provide resistance to the saw blade during the sawing process. The damping unit 8 also includes: a fixed friction block 80, which is provided on the functional module 3; a movable friction block 81, which is movably provided on the functional module 3 and driven by a friction block cylinder 82;

[0078] The movable friction block 81 can be driven by the friction block cylinder 82 to approach the fixed friction block 80 and clamp the saw blade. The friction block cylinder 82 is controlled by the operation panel 2 and the electronic control system.

[0079] The damping part 8 is composed of a friction block cylinder 82 and two friction blocks, and the clamping force is controlled by the pressure regulation of the friction block cylinder 82. During the tooth separation process, the saw blade is clamped throughout the entire process, and the tooth feeding needs to overcome the damping clamping friction force to prevent the saw blade from sliding up and down and forward and backward.

[0080] Saw blade positioning clamping part

[0081] The saw blade positioning and clamping part 9 is provided on the workbench 1 for guiding and clamping the saw blade. The saw blade positioning and clamping part 9 also includes: a width positioning support plate 90, which is detachably provided on the functional module 3 for supporting the bottom of the saw blade, with support rollers 92 provided at both ends of the width positioning support plate 90; a bearing seat 91, which includes a fixed bearing seat 91 and a movable bearing seat 91, and the movable bearing seat 91 is driven and moved by the bearing seat 91 cylinder; a clamping bearing 94, which is provided on the fixed bearing seat 91 and the movable bearing seat 91;

[0082] Among them, the bearing seat 91 is arranged on the functional module 3 and is located above the width positioning support plate 90. The fixed bearing seat 91 and the movable bearing seat 91 are respectively located on both sides of the saw blade. The clamping bearing 94 has an inclined angle for generating a downward cutting force when the saw blade is fed.

[0083] The saw band positioning clamping part 9 allows saw blades of different widths to be adjusted by simply replacing the corresponding standard positioning plate. This is simple and reliable, and avoids workers adjusting the height to cause product batch errors, ensuring that all saw blades produced with the same specifications are accurately positioned, thereby achieving uniform quality. The clamping bearing 94 controlled by the cylinder of the bearing seat 91 generates a clamping force. The clamping bearing 94 is tilted at an angle, and when clamping the saw blade, a downward cutting force is generated to ensure that the back of the saw blade is firmly positioned on the roller of the support plate.

[0084] Saw blade movement path

[0085] After the saw blade enters from the front guide wheel 40, it passes through the damping part 8, the saw band positioning and clamping part 9, the pusher claw 50 belt feeding part, the toothed part 6 (saw band clamping part 7) in sequence, and is finally pushed out by the rear guide wheel 41. The front guide wheel 40, the damping part 8, the saw band positioning and clamping part 9, the pusher claw 50 belt feeding part, the toothed part 6 (saw band clamping part 7) and the rear guide wheel are arranged in a straight line along the left and right directions of the workbench 1.

[0086] The embodiments of the present application are described above in conjunction with the accompanying drawings. Unless there is a conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A cemented carbide gear-splitting machine, comprising: A workbench (1), wherein an operation panel (2) and a plurality of functional modules (3) are provided on the workbench (1), and an electric control system is provided inside the workbench (1); It is characterized by further comprising: Front and rear guide and correction parts (4), the front and rear guide and correction parts (4) are used to guide and correct the saw blade that enters or is pushed out; A toothed belt feeding unit (5), wherein the toothed belt feeding unit (5) is arranged on the workbench (1), and the toothed belt feeding unit (5) is driven by a servo motor and a linear module to feed the saw blade; A tooth segmentation portion (6), the tooth segmentation portion (6) being arranged on the workbench (1), and the tooth segmentation portion (6) being driven by a servo motor and a linear electric cylinder to segment the teeth of the saw blade; A saw band clamping portion (7), the saw band clamping portion (7) being arranged on the workbench (1), and the saw band clamping portion (7) is driven by a servo motor and a linear electric cylinder to clamp the saw blade; The tooth-switching belt feeding portion (5), the tooth-splitting portion (6) and the saw belt clamping portion (7) are all controlled by the operating panel (2) and the electric control system.

2. A cemented carbide gear dividing machine according to claim 1, characterized in that: Also includes: A damping portion (8) is provided on the workbench (1) and is used to provide a resistance to the saw blade during the feeding process.

3. The carbide gear dividing machine according to claim 2, characterized in that: Also includes: A saw band positioning and clamping portion (9) is provided on a workbench (1) and is used for guiding and clamping the saw blade.

4. A cemented carbide gear dividing machine according to claim 3, characterized in that: The toothed belt feeding portion (5) further comprises: A pusher claw (50) is driven by a servo motor and a linear module to move back and forth to push the saw blade. The pusher claw (50) can drive the saw blade forward one tooth position after one reciprocating movement.

5. The carbide gear dividing machine according to claim 4, characterized in that: The toothed portion (6) further comprises: A toothed slider, the toothed slider comprising a front slider (60) and a rear slider (61); A single-tooth segmented tooth mold (62), wherein the single-tooth segmented tooth mold (62) has two segments and is respectively arranged on the side surfaces of the front slider (60) and the rear slider (61) on opposite sides; The tooth-splitting slider is slidably arranged on the functional module (3), and the front slider (60) and the rear slider (61) are driven to move back and forth by corresponding servo motors and linear electric cylinders respectively. The front slider (60) and the rear slider (61) move alternately, and the two single-tooth tooth-splitting dies (62) separate the teeth of the saw blade as the front slider (60) and the rear slider (61) move.

6. The carbide gear dividing machine according to claim 5, characterized in that: The saw band clamping portion (7) further comprises: A clamping jaw, the clamping jaw being arranged on the functional module (3) and located below the toothed slider, the clamping jaw comprising a fixed jaw (70) and a movable jaw (71); A plug iron (72), wherein the plug iron (72) is wedge-shaped and is driven to move by a servo motor and a linear electric cylinder; An elastic reset member, the elastic reset member being arranged on the functional module (3); The movable jaw (71) can be squeezed by the iron plug (72) to approach the fixed jaw (70) to clamp the saw blade, and the elastic reset member is connected to the movable jaw (71) to drive the movable jaw (71) to reset to release the saw blade.

7. The carbide gear dividing machine according to claim 6, characterized in that: The damping part (8) further includes: A fixed friction block (80), the fixed friction block (80) being arranged on the functional module (3); A movable friction block (81), the movable friction block (81) being movably arranged on the functional module (3) and driven to move by a friction block cylinder (82); The movable friction block (81) can be driven by a friction block cylinder (82) to approach the fixed friction block (80) and clamp the saw blade. The friction block cylinder (82) is controlled by an operating panel (2) and an electronic control system.

8. The carbide gear dividing machine according to claim 7, characterized in that: The saw band positioning and clamping portion (9) further comprises: a width positioning support plate (90), the width positioning support plate (90) being detachably arranged on the functional module (3) for supporting the bottom of the saw blade, and support rollers (92) being arranged at both ends of the width positioning support plate (90); A bearing seat (91), the bearing seat (91) comprising a fixed bearing seat (91) and a movable bearing seat (91), the movable bearing seat (91) being driven to move by a cylinder of the bearing seat (91); A clamping bearing (94), wherein the clamping bearing (94) is arranged on the fixed bearing seat (91) and the movable bearing seat (91); The bearing seat (91) is arranged on the functional module (3) and is located above the width positioning support plate (90), the fixed bearing seat (91) and the movable bearing seat (91) are respectively located on both sides of the saw blade, and the clamping bearing (94) has an inclined angle for generating a downward cutting force when the saw blade is fed.

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