Three-knife feed positioning cutting device

Abstract

The present application relates to a kind of three knife feed positioning cutting device.It solves the problem of poor cutting positioning effect of pipe material in prior art, and the problem of easy deviation during cutting.It includes rack base, rack base upper end is equipped with rack processing frame body, rack processing frame body is equipped with material insertion channel, material positioning channel is equipped with circumferential compression positioning assembly for positioning material, circumferential compression positioning assembly middle part is equipped with material annular cutting mechanism along material insertion channel circumferential setting, circumferential compression positioning assembly is driven by circumferential compression drive mechanism arranged in rack processing frame body, and material annular cutting mechanism is driven by cutting drive mechanism, circumferential compression drive mechanism drive and cutting drive mechanism are controlled by electric control assembly arranged outside rack processing frame body.The present application has the advantages of good positioning effect and improved cutting precision.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mechanical equipment, in particular to a three-knife feeding positioning cutting device. BACKGROUND

[0002] Pipe material is a material used for pipe fittings. Different pipe fittings require different pipe materials, and the quality of pipe fittings is directly determined by the quality of pipe materials. Construction engineering, power plants, chemical plants and the like use such pipe materials. Cutting is an indispensable step in the process of processing pipe materials. During cutting, most of the pipe materials are processed by cutting machines. During cutting, the pipe material may have a cutting edge, which affects the cutting accuracy. In addition, the existing pipe cutting equipment has poor positioning effect and is prone to displacement during cutting.

[0003] In order to solve the problems existing in the prior art, people have carried out long-term exploration and put forward various kinds of solutions. For example, a three-knife symmetrical cutting machine [CN202210697184.6] is disclosed in Chinese patent documents. The permeable pipe material to be processed is placed horizontally on the upper end face of the disc body, so that the pipe material is clamped between the two adjacent cutting knives. The operator pushes the pull rod inward, which pushes the penetrating shaft inward, so that the cutting knife is adjusted in parallel, and the inner end face of the cutting knife is attached to the two sides of the pipe material. Three cutting knives are used, and each driving motor is provided with a set of cutting ring pieces through a transmission shaft. The operator controls the forward and backward movement of the pull rod and the penetrating shaft. The inner end face of the three cutting knives can limit the processing pipe material to achieve accurate positioning, so that the cutting position will not be scrapped due to the position deviation of the pipe material. The three cutting knives limit the processing pipe material to ensure that the cutting edge phenomenon will not occur during pipe cutting.

[0004] The above-mentioned scheme solves the problem of cutting edge that may occur during pipe cutting of the pipe cutting equipment in the prior art to some extent, but the scheme still has many deficiencies, for example: the positioning effect is poor, displacement is prone to occur, and deviation may occur during cutting. SUMMARY

[0005] The purpose of the present application is to solve the above-mentioned problems, and provide a three-knife feeding positioning cutting device.

[0006] In order to achieve the above object, the following technical scheme is adopted in the present application: the three-knife feeding positioning cutting device comprises a rack base, an upper end of the rack base is provided with a rack processing frame body, a material insertion channel is arranged through the rack processing frame body, one end of the material insertion channel is provided with an insertion guide structure, the other end of the material insertion channel is provided with a length positioning structure, a circumferential compression positioning assembly for positioning the material is arranged in the material insertion channel, a material annular cutting mechanism is arranged in the circumferential compression positioning assembly and arranged circumferentially along the material insertion channel, the circumferential compression positioning assembly is driven by a circumferential compression driving mechanism arranged in the rack processing frame body, the material annular cutting mechanism is driven by a cutting driving mechanism, and the circumferential compression driving mechanism and the cutting driving mechanism are controlled by an electric control assembly arranged outside the rack processing frame body.

[0007] The circumferential compression positioning assembly is arranged in the material insertion channel to compress the two sides of the tubular material to be cut, and then the material annular cutting mechanism is used to cut the tubular material in a ring shape, so that the positioning effect is good and the displacement during cutting is avoided.

[0008] In the three-knife feeding positioning cutting device, an insertion pipe is arranged axially in the material insertion channel, an annular assembly pipe body is arranged circumferentially outside the insertion pipe, the circumferential compression positioning assembly and the material annular cutting mechanism are arranged circumferentially in the annular assembly pipe body, the insertion pipe is provided with a feeding hole corresponding to the circumferential compression positioning assembly and the material annular cutting mechanism, and a transparent cutting observation window for observing the cutting state is arranged on one side of the rack processing frame body. The transparent cutting observation window is arranged to facilitate timely observation of the cutting state.

[0009] In the three-knife feeding positioning cutting device, the material annular cutting mechanism comprises notch cutters symmetrically arranged on the lower left side and the lower right side of the annular assembly pipe body, the notch cutters are respectively positioned by notch cutter rods, one end of each notch cutter rod is connected with a feeding seat, a cutting cutter rod with a cutting cutter is arranged above the annular assembly pipe body, and one end of the cutting cutter rod is connected with a cutting seat; the cutting driving mechanism comprises a notch feeding cylinder for driving the feeding seat to move, and the cutting seat is connected with a cutting feeding cylinder.

[0010] The notch cutters are used to cut the opening circumferentially, and then the cutting cutter is used to cut from top to bottom, so that the cutting precision is high.

[0011] In the three-knife feeding positioning cutting device, the circumferential compression positioning assembly comprises rotation limiting structures arranged symmetrically in a circle, elastic compression structures arranged horizontally are arranged between two adjacent rotation limiting structures on the left and right sides, and locking and fixing structures arranged on the same axis are arranged between two adjacent rotation limiting structures on the upper and lower sides.

[0012] In the three-knife feeding positioning cutting device, the rotating limiting structure comprises a swing connecting head, the swing connecting head is positioned through a positioning connecting seat, a positioning connecting shaft is arranged on the positioning connecting seat, a limiting shaft is arranged on the swing connecting head, the limiting shaft is connected with the positioning connecting shaft through an anti-reverse connecting clasp, an open clamping groove is arranged on the anti-reverse connecting clasp, and the connecting swing is arranged in the open clamping groove. The rotating limiting structure can prevent the repeated cutting of the notch cutter caused by the rotation of the material direction.

[0013] In the three-knife feeding positioning cutting device, the elastic pressing structure comprises a pressing connecting head, the pressing connecting head is positioned through a pressing seat, a plurality of connecting insertion grooves are arranged on the end of the pressing connecting head, an elastic pressing piece is connected with a jacking spring in the connecting insertion groove, one end of the elastic pressing piece away from the jacking spring is exposed to the connecting insertion groove, and the end of the elastic pressing piece has an arc-shaped lapping part. The elastic pressing structure can effectively press and position the tubular material, and ensure the circumferential stability in the cutting process.

[0014] In the three-knife feeding positioning cutting device, the locking fixing structure comprises a locking clamp head, an adjusting socket is connected to the locking clamp head, a plurality of self-adapting adjusting gears are arranged on the adjusting socket in the longitudinal direction, and the locking clamp head is adjustably arranged in the adjusting socket; the circumferential pressing driving mechanism comprises a pressing driving cylinder for driving the pressing seat to move, and a position adjusting cylinder is connected to the positioning connecting seat and used for adjusting the position of the positioning connecting seat. The locking fixing structure can further improve the pressing force and enhance the stability effect.

[0015] In the three-knife feeding positioning cutting device, the plug-in guiding structure comprises a guide plug barrel arranged in the feeding end of the material insertion channel in the circumferential direction, a pressing rubber strip is arranged on the circumferential inner wall of the guide plug barrel, an arc-shaped rotating connecting seat is arranged on the circumferential outer wall of the guide plug barrel, an arc-shaped rotating clamping part for clamping the outer wall of the material is connected to the rotating connecting seat through a turnover shaft, and a rubber gasket is arranged on the arc-shaped rotating clamping part. The arc-shaped rotating clamping part can effectively press the one end of the tubular material, and prevent the movement in the circumferential direction or the length direction.

[0016] In the three-knife feeding positioning cutting device, the length positioning structure comprises a guide positioning cylinder connected with the material insertion channel, an infrared sensor is arranged on the end of the guide positioning cylinder away from the material insertion channel, and the infrared sensor is connected with a control module arranged outside. The cutting length of the material can be determined through the infrared sensor and the control module, and the cutting accuracy is ensured.

[0017] In the three-knife feeding positioning cutting device, the electric control assembly comprises an electric control box arranged on one side of the rack machining frame body, an operation control panel is arranged on the other side of the rack machining frame body, and an information display screen is arranged on the operation control panel, and the control module is arranged in the control box for loading the information display screen. The operation control panel and the information display screen can be used to control the pressing force and the cutting length and depth according to the actual situation of the tubular material, and the flexibility is good.

[0018] Compared with the prior art, the advantages of the present application are that the length positioning structure is used to determine the cutting length, the arc-shaped rotating clamping part arranged at one end of the material insertion channel is used for clamping during cutting, the circumferential pressing positioning assembly arranged in the material insertion channel is used for circumferential pressing positioning, the circumferential incision is made by the incision cutter during cutting, and the cutting is made from top to bottom by the cutting cutter, so that the cutting precision is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is the overall structure schematic view in the present application;

[0020] Figure 2 is the side structure schematic view of the present application;

[0021] Figure 3 is the material annular cutting mechanism structure schematic view in the present application;

[0022] Figure 4 is the structure schematic view of the material annular cutting mechanism in the present application during cutting;

[0023] Figure 5 is the circumferential pressing positioning assembly structure schematic view in the present application;

[0024] Figure 6 is the structure schematic view of the present application; Figure 5

[0025] Figure 7 is the elastic pressing structure schematic view in the present application;

[0026] Figure 8 is the partial structure sectional view in the present application;

[0027] Figure 9 is the partial structure connection block diagram in the present application;

[0028] ​In the diagram: 1. Machine base; 11. Machine processing frame; 12. Material insertion channel; 13. Material insertion tube; 14. Annular assembly tube; 15. Feed hole; 16. Transparent cutting observation window; 2. Insertion guide structure; 21. Guide cylinder; 22. Pressing rubber strip; 23. Rotary connecting seat; 24. Tilting shaft; 25. Arc-shaped rotating clamping part; 26. Rubber pad; 31. Length positioning structure; 31. Guide positioning cylinder; 32. Infrared sensor; 33. Control module; 4. Circumferential pressing positioning assembly; 41. Rotation limit structure; 41. Swing connector; 411. Positioning connecting seat; 412. Positioning connecting shaft; 413. Anti-reverse connection hook; 414. Open slot; 415. Limiting shaft; 416. Elastic pressing structure; 42. Pressing... 421. Connector 422. Pressing seat 423. Connecting slot 424. Top pressure spring 425. Elastic pressing part 426. Arc-shaped fitting part 427. Locking and fixing structure 43. Locking clip 431. Adjusting socket 432. Adaptive adjustment gear 433. Material ring cutting mechanism 5. Cutting knife 51. Cutting knife bar 52. Feeding knife holder 53. Cutting knife bar 54. Cutting knife holder 55. Cutting knife 56. Circumferential pressing drive mechanism 6. Pressing drive cylinder 61. Position adjusting cylinder 62. Cutting drive mechanism 7. Cutting feed cylinder 71. Cutting feed cylinder 72. Electrical control assembly 8. Electrical control box 81. Operation control panel 82. Information display screen 83. Control box 84. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0030] like Figures 1-2 As shown, this three-blade feed positioning and cutting device includes a frame base 1, a frame processing frame 11 on the upper end of the frame base 1, a material insertion channel 12 passing through the frame processing frame 11, a plug-in guide structure 2 at one end of the material insertion channel 12, a length positioning structure 3 at the other end of the material insertion channel 12, and a circumferential pressing and positioning component 4 for positioning the material inside the material positioning channel. A material annular cutting mechanism 5 is provided in the middle of the circumferential pressing and positioning component 4 along the circumference of the material insertion channel 12. The circumferential pressing and positioning component 4 is driven by a circumferential pressing drive mechanism 6 provided inside the frame processing frame 11, and the material annular cutting mechanism 5 is driven by a cutting drive mechanism 7. The circumferential pressing drive mechanism 6 and the cutting drive mechanism 7 are controlled by an electrical control component 8 provided outside the frame processing frame 11.

[0031] The length positioning structure 3 is used to detect the length to be cut, and the plug-in guide structure 2 is used to guide the material when it enters and to clamp it during cutting. During cutting, the circumferential pressing positioning component 4 presses the two ends of the material to be cut, and the material ring cutting mechanism 5 makes a circumferential cut and then cuts from top to bottom.

[0032] The material insertion channel 12 is provided with an axial material insertion tube 13, and an annular assembly tube 14 is provided on the outer side of the material insertion tube 13. The circumferential clamping and positioning component 4 and the material annular cutting mechanism 5 are circumferentially arranged inside the annular assembly tube 14. The material insertion tube 13 is provided with a feed hole 15 corresponding to the circumferential clamping and positioning component 4 and the material annular cutting mechanism 5. A transparent cutting observation window 16 for observing the cutting status is provided on one side of the machine frame processing frame 11.

[0033] like Figures 3-4 As shown, the material annular cutting mechanism 5 includes cutting blades 51 symmetrically arranged on the lower left and lower right sides of the annular assembly tube 14. The cutting blades 51 are positioned by cutting blade rods 52, and one end of the cutting blade rods 52 is connected to a feed holder 53. A cutting blade rod 54 with cutting blades 56 is arranged directly above the annular assembly tube 14, and one end of the cutting blade rod 54 is connected to a cutting holder 55. The cutting drive mechanism 7 includes a cutting feed cylinder 71 for driving the feed holder 53 to move, and a cutting feed cylinder 72 is connected to the cutting holder 55.

[0034] During cutting, the cutting blade 51 is first pushed forward by the cutting feed cylinder 71. The tubular material is rotated by external equipment to make a circumferential cut. During cutting, the material is pressed by the circumferential clamping and positioning component 4, and the cutting blade 56 is pushed out by the cutting feed cylinder 72 to make the cut.

[0035] like Figures 5-7 As shown, the circumferential clamping and positioning assembly 4 includes a rotation limiting structure 41 arranged circumferentially symmetrically, and an elastic clamping structure 42 arranged horizontally between two adjacent rotation limiting structures 41 on the left and right sides, and a locking and fixing structure 43 located on the same axis between two adjacent rotation limiting structures 41 on the upper and lower sides.

[0036] The rotation limiting structure 41 includes a swing connector 411, which is positioned by a positioning connector 412. The positioning connector 412 is provided with a positioning connecting shaft 413, and the swing connector 411 is provided with a limiting shaft 416. The limiting shaft 416 and the positioning connecting shaft 413 are connected by an anti-reverse connecting hook 414. The anti-reverse connecting hook 414 is provided with an open slot 415, and the aforementioned swinging motion is set in the open slot 415.

[0037] The anti-reverse connection hook 414 is in a fixed state. When the material rotates counterclockwise, the positioning connection seat 412 is in a movable state. The anti-reverse connection hook 414 limits the positioning connection seat 412 by limiting the limit shaft 416, thereby preventing the positioning connection seat 412 from moving in the same direction and ensuring that the material reverses.

[0038] In detail, the elastic pressing structure 42 comprises a pressing connector 421 positioned by a pressing seat 422, and the pressing connector 421 is provided with a plurality of connecting slots 423 at the end, and the connecting slots 423 are provided with elastic pressing pieces 425 connected by top pressing springs 424, and the elastic pressing pieces 425 are exposed to the connecting slots 423 at one end away from the top pressing springs 424, and the elastic pressing pieces 425 are provided with arc-shaped abutting portions 426 at the end.

[0039] When the material enters, the elastic pressing pieces 425 press the circumferential outer wall of the material due to the force of the top pressing springs 424, and the pressing driving cylinder 61 can adjust the position of the pressing seat 422 according to the diameter of the material, so as to ensure the pressing degree.

[0040] Preferably, the locking fixing structure 43 comprises a locking clamp head 431 connected with an adjusting socket 432, and the adjusting socket 432 is provided with a plurality of self-adapting adjusting positions 433 in the longitudinal direction, and the locking clamp head 431 is adjustably arranged in the adjusting socket 432; the circumferential pressing driving mechanism 6 comprises a pressing driving cylinder 61 for driving the pressing seat 422 to move, and the positioning connecting seat 412 is connected with a position adjusting cylinder 62 for adjusting the position of the positioning connecting seat 412. The locking fixing structure 43 here can also be driven by the cylinder to feed, and the material is pressed in the up-down position.

[0041] As shown in Figure 8 , the plug-in guide structure 2 comprises a guide plug 21 circumferentially arranged at the feeding end of the material insertion channel 12, the guide plug 21 is provided with a pressing rubber strip 22 on the circumferential inner wall, and the circumferential outer wall of the guide plug 21 is provided with an arc-shaped rotating connecting seat 23, the rotating connecting seat 23 is connected with an arc-shaped rotating clamping portion 25 for clamping the outer wall of the material by a turnover shaft 24, and the arc-shaped rotating clamping portion 25 is provided with a rubber gasket 26.

[0042] After the circumferential cutting of the cut is completed, the material is circumferentially clamped by the arc-shaped rotating clamping portion 25 to prevent rotation.

[0043] Among them, the length positioning structure 3 comprises a guide positioning cylinder 31 connected with the material insertion channel 12, and the guide positioning cylinder 31 is provided with an infrared sensor 32 at one end away from the material insertion channel 12, and the infrared sensor 32 is connected with a control module 33 arranged outside. The infrared sensor 32 is used for detecting the head or node position of the material.

[0044] As shown in Figure 1 , Figure 9As shown, the electric control assembly 8 includes an electric control box 81 arranged on one side of the rack processing frame 11, and an operation control panel 82 arranged on the other side of the rack processing frame 11, and the operation control panel 82 is provided with an information display screen 83, and the control module 33 is arranged in a control box 84 for loading the information display screen 83.

[0045] In summary, the principle of the embodiment is to insert the tubular material into the annular assembly pipe body 14, detect the head or node position of the material by the infrared sensor 32, make a circumferential cut on the position to be cut by the cutting tool, after the cutting is completed, the circumferential compression positioning assembly 4 is used to compress and position the material in the circumferential direction, and the arc-shaped rotating clamping part 25 is used to hold the material in the circumferential direction to prevent rotation, and the cutting knife 56 is driven to cut by the cutting feeding cylinder 72.

[0046] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

[0047] Although the terms such as rack base 1, rack processing frame 11, material insertion channel 12, material insertion pipe 13, annular assembly pipe body 14, feeding hole 15, transparent cutting observation window 16, plug-in guide structure 2, guide plug 21, compression rubber strip 22, rotating connection seat 23, overturning shaft 24, arc-shaped rotating clamping part 25, rubber gasket 26, length positioning structure 3, guide positioning cylinder 31, infrared sensor 32, control module 33, circumferential compression positioning assembly 4, rotating limiting structure 41, swing connection head 411, positioning connection seat 412, positioning connection shaft 413, anti-reverse connection clasp 414, open clamping groove 415, limiting shaft 416, elastic compression structure 42, compression connection head 421, compression seat 422, connection slot 423, top pressure spring 424, elastic compression part 425, arc-shaped lamination part 426, locking fixing structure 43, locking clamping head 431, adjustment socket 432, self-adaptive adjustment gear 433, material annular cutting mechanism 5, cutting tool 51, cutting tool rod 52, feeding knife seat 53, cutting tool rod 54, cutting knife seat 55, cutting tool 56, circumferential compression driving mechanism 6, compression driving cylinder 61, position adjustment cylinder 62, cutting driving mechanism 7, cutting feeding cylinder 71, cutting feeding cylinder 72, electric control assembly 8, electric control box 81, operation control panel 82, information display screen 83, control box 84, etc. are used in the description, but the possibility of using other terms is not excluded. The use of these terms is only to facilitate the description and explanation of the essence of the present application; any interpretation of them as any kind of additional limitation is contrary to the spirit of the present application.

Claims

1. A three-blade feed positioning and cutting device, comprising a frame base (1), wherein a frame processing frame (11) is provided at the upper end of the frame base (1), characterized in that, The machine frame (11) is provided with a material insertion channel (12), and one end of the material insertion channel (12) is provided with a plug-in guide structure (2). The other end of the material insertion channel (12) is provided with a length positioning structure (3). The material positioning channel is provided with a circumferential pressing positioning component (4) for positioning the material. The circumferential pressing positioning component (4) is provided with a material ring cutting mechanism (5) arranged circumferentially along the material insertion channel (12) in the middle. The circumferential pressing positioning component (4) is driven by a circumferential pressing drive mechanism (6) provided in the machine frame (11), and the material ring cutting mechanism (5) is driven by a cutting drive mechanism (7). The circumferential pressing drive mechanism (6) drives the material insertion channel (12) to position the material. The moving and cutting drive mechanism (7) is controlled by an electrical control component (8) located on the outside of the machine frame (11); the material ring cutting mechanism (5) includes cutting tools (51) symmetrically arranged on the lower left and lower right sides of the ring assembly tube (14), the cutting tools (51) are respectively positioned by cutting tool rods (52), and one end of the cutting tool rod (52) is connected to a feed tool holder (53), and a cutting tool rod (54) with cutting tools (56) is arranged directly above the ring assembly tube (14), and one end of the cutting tool rod (54) is connected to a cutting tool holder (55); the cutting drive mechanism (7) includes a cutting feed cylinder (71) for driving the feed tool holder (53) to move, and the cutting tool holder (56) is connected to a cutting tool holder (55) at one end; 5) Connected to the upper cutting feed cylinder (72); the circumferential pressing and positioning assembly (4) includes a circumferentially symmetrically arranged rotation limiting structure (41), and a horizontally arranged elastic pressing structure (42) is provided between two adjacent rotation limiting structures (41) on the left and right sides, and a locking and fixing structure (43) located on the same axis is provided between two adjacent rotation limiting structures (41) on the upper and lower sides; the rotation limiting structure (41) includes a swing connector (411), the swing connector (411) is positioned by a positioning connecting seat (412), and a positioning connecting shaft (413) is provided on the positioning connecting seat (412), and a limiting shaft (416) is provided on the swing connector (411), and the limiting shaft (416) is provided on the swing connector (411). 6) It is connected to the positioning connecting shaft (413) via an anti-reverse connecting hook (414), and the anti-reverse connecting hook (414) is provided with an open slot (415); the elastic pressing structure (42) includes a pressing connector (421), the pressing connector (421) is positioned by a pressing seat (422), and the end of the pressing connector (421) is provided with several connecting slots (423). The connecting slot (423) is provided with an elastic pressing member (425) connected by a top pressing spring (424), and the end of the elastic pressing member (425) away from the top pressing spring (424) is exposed in the connecting slot (423). The end of the elastic pressing member (425) has an arc-shaped fitting part (426).The locking and fixing structure (43) includes a locking head (431), on which an adjusting socket (432) is connected, and the adjusting socket (432) is provided with several adaptive adjustment positions (433) in the longitudinal direction. The locking head (431) is adjustablely disposed within the adjusting socket (432). The circumferential pressing drive mechanism (6) includes a pressing drive cylinder (61) for driving the pressing seat (422) to move, and a position adjusting cylinder (62) for adjusting the position of the positioning connecting seat (412) is connected to the positioning connecting seat (412).

2. The three-blade feed positioning and cutting device according to claim 1, characterized in that, The material insertion channel (12) is provided with a material insertion tube (13) in the axial direction. The material insertion tube (13) is provided with an annular assembly tube body (14) on the outer side of the circumference. The circumferential pressing and positioning component (4) and the material annular cutting mechanism (5) are arranged in the annular assembly tube body (14) in the circumferential direction. The material insertion tube (13) is provided with a feed hole (15) corresponding to the circumferential pressing and positioning component (4) and the material annular cutting mechanism (5) in the circumferential direction. The machine frame processing frame (11) is provided with a transparent cutting observation window (16) on one side for observing the cutting state.

3. The three-blade feed positioning and cutting device according to claim 1, characterized in that, The insertion guide structure (2) includes a guide tube (21) circumferentially arranged at the feed end of the material insertion channel (12). The guide tube (21) is provided with a pressing rubber strip (22) on its circumferential inner wall and an arc-shaped rotating connecting seat (23) on its circumferential outer wall. The rotating connecting seat (23) is connected to an arc-shaped rotating clamping part (25) for clamping the outer wall of the material via a flipping shaft (24), and a rubber gasket (26) is provided on the arc-shaped rotating clamping part (25).

4. The three-blade feed positioning and cutting device according to claim 1, characterized in that, The length positioning structure (3) includes a guide positioning cylinder (31) connected to the material insertion channel (12). An infrared sensor (32) is provided at one end of the guide positioning cylinder (31) away from the material insertion channel (12). The infrared sensor (32) is connected to a control module (33) located externally.

5. The three-blade feed positioning and cutting device according to claim 4, characterized in that, The electrical control component (8) includes an electrical control box (81) located on one side of the machine processing frame (11), an operation control panel (82) located on the other side of the machine processing frame (11), and an information display screen (83) located on the operation control panel (82). The control module (33) is located in a control box (84) for loading the information display screen (83).

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