Enhanced Positioning System for the Metal Tape Cutting Unit in the Injection Molding Production of the Module Housing

Abstract

The present invention discloses an enhanced positioning system for metal strip cutting units in the injection molding production of module shells, which includes: a workbench, on the upper end surface of which a plurality of cutting stations are arranged at intervals; a base frame, horizontally fixed at each cutting station on the upper end surface of the workbench; an upper pressure plate, which is a plurality of cutting units set and evenly arranged along the length direction of the base frame, and the cutting units of each group are assembled on the upper end surface of each of the base frames front and back; two vibrating belt units are arranged below each cutting unit; a positioning mechanism is vertically arranged on the lower end surface of the base frame; in the present invention, two upper pressure plates are symmetrically installed above the material strip groove, and each upper pressure plate is provided with a vibrating belt unit, and the two vibrating belt units can cooperate with each other to provide high-frequency micro-amplitude vibration to the material strip in the horizontal direction, thereby effectively breaking the static friction between the metal material strip and the material strip groove structure; and the positioning mechanism can be able to adapt to the positioning hole and achieve precise positioning to ensure cutting accuracy.

Description

Technical Field

[0001] The present invention belongs to the technical field of automation equipment, and in particular relates to an enhanced positioning system for a metal strip cutting unit in the injection molding production of a module shell. Background Art

[0002] In the production process of module housings, especially for module housings with built-in speakers on mobile phones, cutting of metal strips is a common process. Existing technologies usually rely on the edges of the strips or simple positioning holes for positioning, and then cutting. However, since the strips themselves may have width tolerances and deformations, cumulative errors may occur during the feeding process, as well as vibrations or gaps in the equipment itself, resulting in unstable cutting accuracy. Especially in precision applications where the cutting surface is required to be lower than the material surface ("eating in") and no burrs are generated (such as parts that need to be subsequently injection molded or precisely assembled), existing positioning methods are difficult to continuously guarantee the required dimensional accuracy and cut quality, which may result in high scrap rates or affect subsequent processes.

[0003] Therefore, it is necessary to provide an enhanced positioning system for the metal strip cutting unit in the injection molding production of module housings to solve the problems raised in the above background technology. Summary of the Invention

[0004] To achieve the above objectives, the present invention provides the following technical solution: an enhanced positioning system for a metal strip cutting unit in the injection molding production of a module housing, comprising:

[0005] A workbench, on the upper end surface of which a plurality of cutting stations are arranged at intervals, a feeding wheel is rotatably provided at each cutting station on one side of the workbench, and a guide plate is fixed on the side of the upper end surface of the workbench close to the feeding wheel;

[0006] The bottom plate frame is horizontally fixed at each cutting station on the upper end surface of the workbench, and a through-type material strip groove is provided in the middle of the bottom plate frame along its length direction;

[0007] There are multiple upper pressing plates evenly arranged along the length of the bottom plate frame. The upper pressing plates are symmetrically distributed on both sides above the strip groove. Each upper pressing plate is also equipped with a strip pressing device.

[0008] The gusset mechanisms are symmetrically fixed on the bottom plate frame, and each of the gusset mechanisms is arranged in a one-to-one correspondence with the upper pressing plate, and is used to tightly buckle the upper pressing plate on the surface of the bottom plate frame;

[0009] Multiple groups of cutting units, each group of cutting units is composed of a plurality of cutting units, and the cutting units of each group are respectively vertically assembled on the upper end surface of each of the bottom plate frames;

[0010] Two vibrating belt shaking units are provided under each cutting unit, and the two vibrating belt shaking units are symmetrically distributed on the upper pressing plates on both sides of the material belt groove;

[0011] The positioning mechanism is vertically arranged on the lower end surface of the base frame and is located directly below the cutting unit.

[0012] Furthermore, preferably, the two vibration belt shaking units below the cutting unit are both set at least two belt pitches away from the positioning mechanism.

[0013] Further, preferably, the vibration belt shaking unit includes:

[0014] There are two base plates arranged in parallel, one above the other. A plurality of fixing rods are vertically fixed on the upper base plate, one end of each fixing rod passes through the lower base plate and is slidably connected to the upper pressing plate.

[0015] A fixed plate, one end of which is horizontally fixed between the two base plates and the other end of which extends to the outside of the base plates, and a main gear disc is rotatably provided on the end of the fixed plate located between the base plates;

[0016] The driven gear is rotatably connected to the other side of the fixed plate, and the driven gear is connected to the main gear plate through a transmission belt.

[0017] A positioning guide pin is vertically rotatably connected to the bottom of the fixed plate and is coaxially arranged with the driven tooth. The upper end of the positioning guide pin is fixed to the driven tooth. The positioning guide pin adopts a two-stage rotation structure.

[0018] An eccentric block is axially distributed on the rotating upper end of the positioning guide pin;

[0019] An electric lifter is installed on the upper pressing plate, and an output end of the electric lifter is fixed to the base plate below.

[0020] Further, as a preference, the rotatable lower end of the positioning guide needle is provided with a guide cavity, a piston rod is slidably connected in the guide cavity, a bag sleeve is provided on the outer cover of the rotatable lower end of the positioning guide needle, and an air hole is opened on one side of the guide cavity, and the bag sleeve is connected to the guide cavity through the air hole;

[0021] A liquid guide seat is installed above the driven teeth on the fixed plate, and a guide plug rod is sealingly and slidingly connected in the liquid guide seat. The lower end of the guide plug rod slides into the positioning guide needle and is connected to the piston rod.

[0022] Furthermore, preferably, the vibration frequencies and vibration directions of the two vibration belt units are exactly the same.

[0023] Furthermore, preferably, the positioning mechanism includes:

[0024] A positioning column is vertically installed below the base frame. A positioning hole is opened in the base frame. The upper end of the positioning column is slidably inserted into the positioning hole in a clearance fit manner.

[0025] A lifting driver is installed on the lower end surface of the base frame, and a power output end of the lifting driver is connected to the positioning column;

[0026] A push rod is coaxially slidably disposed within the positioning column. A sealed air pressure chamber is disposed below the positioning column. The lower end of the push rod extends downward to form a piston structure that forms a sealing fit with the sealed air pressure chamber.

[0027] There are multiple side dividing plates distributed around the circumference, each of which is symmetrically fixed with a guide shaft, and forms a radial sliding pair with the positioning column through the guide shaft;

[0028] Guide plates are provided corresponding to the side panels, and the guide plates are vertically assembled in the positioning columns and fixed to the side panels;

[0029] A top shaft is configured as a conical structure and is fixed to the upper end of the propulsion rod, wherein the top shaft contacts each of the guide plates.

[0030] Furthermore, as a preference, the contact surface between the top shaft and the guide plate is a complementary inclined surface structure, and a pre-tightened return spring is sleeved on the outer periphery of the top shaft, so that each side partition plate can maintain a retracted state by the elastic force of the return spring in the absence of external force, and form a continuous cylindrical surface with the outer surface of the positioning column.

[0031] Furthermore, preferably, an axial air guide channel is integrated at the bottom of the positioning column, and the air guide channel is connected to the closed air pressure chamber to form a through-type air pressure compensation circuit;

[0032] A through opening is provided on the side wall of the positioning column, and a limit pin is vertically fixed on the push rod. A spirally adjustable limit ring is installed on the positioning column above the through opening. The limit ring is driven by a threaded pair to move axially along the positioning column, forming a mechanical locking mechanism for the movement stroke of the limit pin.

[0033] Furthermore, preferably, the belt pressing device includes:

[0034] An outer fixing plate is fixed on the upper pressing plate, and one side of the outer fixing plate is rotatably connected to a transfer arm;

[0035] A propulsion cylinder is mounted on the outer fixing plate, and an output end of the propulsion cylinder is hinged to one end of the transfer arm;

[0036] The rubber pressure plate is fixed horizontally on the other end of the transfer arm.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] In the present invention, the metal strip can be horizontally transmitted through the strip slot of the base frame so that the cutting unit can cut it in turn, wherein two upper pressure plates are symmetrically installed above the strip slot, and each upper pressure plate is provided with a vibration shaking unit. The two vibration shaking units can cooperate with each other to provide high-frequency micro-vibration in the horizontal direction to the strip, thereby effectively breaking the static friction between the metal strip (especially thin materials or materials with coated surfaces) and the strip slot structure, and preventing the metal strip from being locally adhered due to electrostatic adsorption, oil film tension or vacuum effect, which makes it difficult to accurately reposition and adjust it later; and the main positioning mechanism can control the positioning column to connect with the positioning hole of the metal strip through the lifting drive to achieve rough positioning, and then when the vibration shaking unit stops working, the push rod in the positioning column controls the uniform expansion of multiple side panels of its side wall, so as to adapt to the contact with the positioning hole and achieve precise positioning, completely eliminating the positioning error gap and ensuring cutting accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0040] Figure 2 Schematic diagram of the structure of a single-station cutting unit in the present invention;

[0041] Figure 3 Schematic diagram of the installation and distribution of the positioning mechanism and the vibration belt unit in the present invention;

[0042] Figure 4 Schematic diagram of the structure of the vibration belt unit in the present invention;

[0043] Figure 5 Schematic diagram of the internal structure of the positioning guide needle in the present invention;

[0044] Figure 6 Schematic diagram of the structure of the positioning mechanism of the present invention;

[0045] Figure 7 for Figure 6 A schematic diagram of the structure at center A;

[0046] Figure 8 Schematic diagram of the structure of the positioning mechanism of the present invention;

[0047] In the figure: 1. workbench; 11. feeding wheel; 12. guide plate; 13. cutting unit; 2. bottom plate frame; 21. material belt groove; 22. upper pressure plate; 23. buckle plate mechanism; 3. positioning mechanism; 31. positioning column; 32. through hole; 33. propulsion rod; 34. side dividing plate; 35. guide shaft; 36. guide plate; 37. top shaft; 38. air guide channel; 39. limit pin; 310. limit ring; 4. vibration belt unit; 41. base plate; 42. fixing rod; 43. fixing plate; 44. main gear disc; 45. driven gear; 46. eccentric block; 5. positioning mechanism; 51. outer fixing plate; 52. adapter arm; 53. propulsion cylinder; 54. rubber pressure plate; 6. positioning guide pin; 61. guide cavity; 62. piston rod; 63. bag sleeve; 64. liquid guide seat; 65. guide plug rod. DETAILED DESCRIPTION

[0048] See also Figures 1-8 In an embodiment of the present invention, an enhanced positioning system for a metal strip cutting unit in injection molding of a module housing comprises:

[0049] A workbench 1 has a plurality of cutting stations arranged at intervals on its upper end surface. A feed wheel 11 is rotatably provided at each cutting station on one side of the workbench 1, and a guide plate 12 is fixed on the side of the upper end surface of the workbench 1 close to the feed wheel 11.

[0050] The bottom plate frame 2 is horizontally fixed to each cutting station on the upper end surface of the workbench 1. A through-type material strip groove 21 is provided in the middle of the bottom plate frame 2 along its length direction. The metal material strip conveyed in the guide plate 12 can be horizontally transferred through the material strip groove 21.

[0051] There are multiple upper pressing plates 22 that are evenly arranged along the length of the bottom plate frame 2. The upper pressing plates 22 are symmetrically distributed on both sides above the strip groove 21, thereby effectively preventing the metal strip from deviating during transmission. Each upper pressing plate 22 is also equipped with a strip pressing device 5.

[0052] The buckle plate mechanism 23 is symmetrically fixed on the bottom plate frame 2. Each of the buckle plate mechanisms 23 is provided in a one-to-one correspondence with the upper pressing plate 22, and is used to buckle the upper pressing plate 22 tightly against the surface of the bottom plate frame 2;

[0053] Multiple groups of cutting units 13, each group of cutting units 13 is composed of a plurality of cutting units 13, and the cutting units 13 of each group are respectively vertically assembled on the upper end surface of each of the bottom plate frames 2, and the cutting units 13 are used to cut each segment of the metal strip after positioning;

[0054] Two vibration belt shaking units 4 are provided below each cutting unit 13. The two vibration belt shaking units 4 are centrally and symmetrically distributed on the upper pressing plates 22 on both sides of the material belt groove 21.

[0055] The positioning mechanism 3 is vertically arranged on the lower end surface of the base frame 2 and is located directly below the cutting unit 13. During the transmission and positioning of the metal strip, the positioning holes on the metal strip can generally be accurately positioned directly through the positioning mechanism 3. After the metal strip has been transmitted for more than 4-6 pitches, the vibration belt shaking unit 4 can be used to provide it with high-frequency micro-vibration in the horizontal direction to accurately reset the metal strip, thereby realizing the timing coupling of efficient positioning of the metal strip and intelligent vibration positioning, thereby ensuring cutting efficiency and positioning accuracy. In special use, the vibration belt shaking unit 4 can vibrate and reset the metal strip of each segment. Although this prolongs the overall duration of the positioning process, it can significantly improve the positioning accuracy and reduce errors in subsequent processing.

[0056] After positioning is completed, the belt pressing device 5 can firmly fix the metal strip in position to avoid displacement during cutting.

[0057] In this embodiment, the two vibrating belt shaking units 4 below the cutting unit 13 are both set at least two material belt pitches away from the positioning mechanism to maintain a safe working distance and avoid material fatigue or microcracks caused by alternating stress caused by vibration.

[0058] As a preferred embodiment, the vibration belt unit 4 includes:

[0059] There are two base plates 41 arranged in parallel, one above the other. A plurality of fixing rods 42 are vertically fixed to the upper base plate 41 . One end of each fixing rod 42 passes through the lower base plate 41 and is slidably connected to the upper pressing plate 22 .

[0060] A fixed plate 43, one end of which is horizontally fixed between the two base plates 41 and the other end of which extends to the outside of the base plates 41. A main gear wheel 44 is rotatably provided on the end of the fixed plate 43 located between the base plates 41;

[0061] The driven gear 45 is rotatably connected to the other side of the fixed plate 43, and the driven gear 45 is connected to the main gear plate 44 through a transmission belt.

[0062] The positioning guide pin 6 is vertically rotatably connected to the bottom of the fixed plate 43 and is coaxially arranged with the driven gear 45. The upper end of the positioning guide pin 6 is fixed to the driven gear 6, so that when the main gear plate 44 rotates, it can drive the driven gear 6 to rotate synchronously through the transmission belt. At this time, the positioning guide pin 6 below the driven gear 6 moves accordingly. The positioning guide pin 6 adopts a two-stage rotation structure. Therefore, the rotating upper end of the positioning guide pin 6 can rotate synchronously with the driven gear 6, while its lower end is in a non-rotating state;

[0063] The eccentric block 46 is axially distributed on the rotating upper end of the positioning guide needle 6, so that the positioning guide needle 6 can achieve a centrifugal vibration effect as a whole during its continuous rotation;

[0064] An electric lifter (not shown) is mounted on the upper pressure plate 22 , and an output end of the electric lifter is fixed to the base plate 41 below, and is used to drive and control the positioning guide pin 6 to extend downward into the positioning hole of the metal strip or to detach from the positioning hole.

[0065] In this embodiment, a guide cavity 61 is provided at the rotating lower end of the positioning guide needle 6, and a piston rod 62 is slidably connected to the guide cavity 61. A bag 63 is provided on the outer cover of the rotating lower end of the positioning guide needle 6, and an air hole is opened on one side of the guide cavity 61. The bag 63 is connected to the guide cavity 61 through the air hole, so that when the piston rod 62 slides up and down, it can push the airflow in the guide cavity 61 into the bag 63, thereby causing the bag 63 to expand outward.

[0066] The guide pin 6 is pressed against the guide pin 63 and the guide pin 64 is pressed against the guide pin 63, so that the guide pin 63 is pressed against the guide pin 63.

[0067] In this embodiment, the vibration frequencies and vibration directions of the two vibration belt units 4 are exactly the same.

[0068] In this embodiment, the positioning mechanism 3 includes:

[0069] The positioning column 31 is vertically installed below the base frame 2. A through hole 32 is formed in the base frame 2. The upper end of the positioning column 31 is slidably inserted into the through hole 32 in a clearance fit manner.

[0070] A lifting actuator (not shown) is mounted on the lower end surface of the base frame 2. The power output end of the lifting actuator is connected to the positioning post 31, and is used to drive and control the positioning post 31 to slide upward to the outside of the through hole 32 so as to engage with the positioning hole of the metal strip.

[0071] The push rod 33 is coaxially slidably disposed within the positioning column 31. A sealed air pressure chamber is provided below the positioning column 31. The lower end of the push rod 33 extends downward to form a piston structure that forms a sealing fit with the sealed air pressure chamber.

[0072] There are multiple side dividing plates 34 distributed around the circumference. Each of the side dividing plates 34 is symmetrically fixed with a guide shaft 35, and forms a radial sliding pair with the positioning column 31 through the guide shaft 35.

[0073] Guide plates 36 are provided corresponding to the side panels 34 , and the guide plates 36 are vertically assembled in the positioning columns 31 and fixed to the side panels 34 ;

[0074] The top shaft 37 is set to a conical structure and fixed to the upper end of the push rod 33. The top shaft 37 is in contact with each of the guide plates 36. Therefore, during the axial sliding adjustment of the top shaft 37, it can radially push the side dividing plates 34 on the periphery of the positioning column 31 through the top shaft 37, so that the side dividing plates 34 can contact the inner wall of the positioning hole of the metal strip to achieve a precise positioning effect.

[0075] As a preferred embodiment, the contact surface between the top shaft 37 and the guide plate 36 is a complementary inclined surface structure, and a pre-tightened return spring is sleeved on the outer periphery of the top shaft 37, so that each side dividing plate 34 is kept in a retracted state by the elastic force of the return spring in the absence of external force, and forms a continuous cylindrical surface with the outer surface of the positioning column 31. That is to say, before the positioning column 31 slides upward through the lifting drive and connects with the positioning hole of the metal strip, each side dividing plate 34 is retracted and assembled on the surface of the positioning column 31, so that the positioning column 31 can maintain sufficient clearance with the positioning hole for sliding docking, wherein the diameter of the positioning column after retraction is ≤ positioning hole diameter - 2× safety clearance (recommended ≥0.3mm).

[0076] In this embodiment, an axial air guide channel 38 is integrated at the bottom of the positioning column 31, and the air guide channel 38 is connected to the closed air pressure chamber to form a through-type air pressure compensation circuit;

[0077] A through opening is provided on the side wall of the positioning column 31, and a limit pin 39 is vertically fixed on the push rod 33. A spirally adjustable limit ring 310 is installed on the positioning column 31 above the through opening. The limit ring 310 is driven by a threaded pair to axially displace along the positioning column 31, forming a mechanical locking mechanism for the movement stroke of the limit pin 39, that is, the limit ring 310 can mechanically limit the axial sliding length of the push rod 33, thereby preventing the side dividing plate 34 on the positioning column 31 from being pushed by the top shaft 37 to produce an excessive expansion range, resulting in damage to the metal strip. Among them, the limit ring 310 adopts M12×0.5 fine thread (lead accuracy ±0.01mm), and each 36° rotation corresponds to an axial displacement of 50μm. The expansion error of the side dividing plate 34 can be precisely controlled within the range of 0.02-0.15mm through precise adjustment.

[0078] In this embodiment, the belt pressing device 5 includes:

[0079] The outer fixing plate 51 is fixed on the upper pressing plate 22, and one side of the outer fixing plate 51 is rotatably connected to the transfer arm 52;

[0080] A propulsion cylinder 53 is mounted on the outer fixing plate 51 , and an output end of the propulsion cylinder 53 is hinged to one end of the transfer arm 52 ;

[0081] The rubber pressure plate 54 is horizontally fixed at the other end of the transfer arm 52, wherein the rubber pressure plate 54 can be tightly pressed near the cutting edge of the metal strip, which can provide a strong pressing and fastening effect, avoid the metal strip from shifting and deviating during cutting, and improve the cutting effect.

[0082] The above is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, can make equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, which should be covered by the scope of protection of the present invention.

Claims

1. Enhanced positioning system for metal strip cutting unit, characterized in that: include: A workbench (1) has a plurality of cutting stations arranged at intervals on its upper end surface, a feeding wheel (11) is rotatably provided at each cutting station on one side of the workbench (1), and a guide plate (12) is fixed on one side of the upper end surface of the workbench (1) close to the feeding wheel (11); The bottom plate frame (2) is horizontally fixed at each cutting station on the upper end surface of the workbench (1), and a through-type material strip groove (21) is provided in the middle of the bottom plate frame (2) along its length direction; The upper pressing plates (22) are provided in plurality and are evenly arranged along the length direction of the bottom plate frame (2). The upper pressing plates (22) are symmetrically distributed on both sides above the material belt groove (21). Each upper pressing plate (22) is also equipped with a belt pressing device (5); The buckle plate mechanisms (23) are symmetrically fixed on the bottom plate frame (2), and each buckle plate mechanism (23) is arranged in a one-to-one correspondence with the upper pressing plate (22) and is used to buckle the upper pressing plate (22) tightly on the surface of the bottom plate frame (2); Multiple groups of cutting units (13), each group of cutting units (13) is composed of a plurality of cutting units (13), and each group of cutting units (13) is respectively vertically assembled on the upper end surface of each bottom plate frame (2) in the front and rear directions; Two vibrating belt shaking units (4) are provided below each cutting unit (13), and the two vibrating belt shaking units (4) are centrally and symmetrically distributed on the upper pressing plates (22) on both sides of the material belt groove (21); A positioning mechanism (3) is vertically arranged on the lower end surface of the base frame (2) and is located directly below the cutting unit (13); The vibration belt shaking unit (4) comprises: The base plates (41) are two upper and lower parallel plates, and a plurality of fixing rods (42) are vertically fixed on the upper base plate (41). One end of the fixing rod (42) passes through the lower base plate (41) and is slidably connected to the upper pressing plate (22). A fixed plate (43) with one end horizontally fixed between the two base plates (41) and the other end extending to the outside of the base plates (41); a main gear disc (44) is rotatably provided at one end of the fixed plate (43) located between the base plates (41); The driven gear (45) is rotatably connected to the other side of the fixed plate (43), and the driven gear (45) and the main gear plate (44) are connected and driven by a transmission belt; The positioning guide needle (6) is vertically rotatably connected to the bottom of the fixed plate (43) and is coaxially arranged with the driven tooth (45). The upper end of the positioning guide needle (6) is fixed to the driven tooth (45). The positioning guide needle (6) adopts a two-stage rotation structure. An eccentric block (46) is axially distributed on the rotating upper end of the positioning guide needle (6); An electric lifter is mounted on the upper pressing plate (22), and an output end of the electric lifter is fixed to a base plate (41) below; The positioning mechanism (3) comprises: A positioning column (31) is vertically mounted below the base frame (2). A through hole (32) is provided in the base frame (2). The upper end of the positioning column (31) is slidably inserted into the through hole (32) in a clearance fit manner. A lifting driver is installed on the lower end surface of the base frame (2), and a power output end of the lifting driver is connected to the positioning column (31); The push rod (33) is coaxially slidably arranged in the positioning column (31), and a sealed air pressure chamber is provided below the interior of the positioning column (31). The lower end of the push rod (33) extends downward to form a piston structure that forms a sealing fit with the sealed air pressure chamber. The side dividing plates (34) are multiple and distributed around the circumference. Each side dividing plate (34) is symmetrically fixed with a guide shaft (35) in the upper and lower directions, and forms a radial sliding pair with the positioning column (31) through the guide shaft (35); Guide plates (36) are provided corresponding to the side dividing plates (34), and the guide plates (36) are vertically assembled in the positioning columns (31) and fixed to the side dividing plates (34); The top shaft (37) is configured as a conical structure and is fixed to the upper end of the propulsion rod (33). The top shaft (37) is in contact with each guide plate (36).

2. The enhanced positioning system for a metal strip cutting unit according to claim 1, wherein: The two vibrating belt shaking units (4) below the cutting unit (13) are both arranged at least two belt pitches away from the positioning mechanism.

3. The enhanced positioning system for a metal strip cutting unit according to claim 1, wherein: The rotating lower end of the positioning guide needle (6) is provided with a guide cavity (61), a piston rod (62) is slidably connected in the guide cavity (61), a bag sleeve (63) is provided on the outer cover of the rotating lower end of the positioning guide needle (6), and an air hole is opened on one side of the guide cavity (61), and the bag sleeve (63) is connected to the guide cavity (61) through the air hole; A liquid guide seat (64) is installed above the driven tooth (45) on the fixed plate (43). A guide rod (65) is sealed and slidably connected in the liquid guide seat (64). The lower end of the guide rod (65) slides into the positioning guide needle (6) and is connected to the piston rod (62).

4. The enhanced positioning system for a metal strip cutting unit according to claim 1, wherein: The vibration frequencies and vibration directions of the two vibration belt units (4) are completely the same.

5. The enhanced positioning system for a metal strip cutting unit according to claim 1, wherein: The contact surfaces of the top shaft (37) and the guide plate (36) are in a complementary inclined surface structure, and a pre-tightened return spring is sleeved on the outer periphery of the top shaft (37), so that the side plates (34) are kept in a retracted state by the elastic force of the return spring in the absence of external force, and form a continuous cylindrical surface with the outer surface of the positioning column (31).

6. The enhanced positioning system for a metal strip cutting unit according to claim 1, wherein: An axial air guide channel (38) is integrated at the bottom of the positioning column (31), and the air guide channel (38) is connected to the closed air pressure chamber to form a through-type air pressure compensation circuit; A through opening is provided on the side wall of the positioning column (31), and a limiting pin (39) is vertically fixed on the propulsion rod (33). A spirally adjustable limiting ring (310) is mounted on the positioning column (31) above the through opening. The limiting ring (310) is driven by a threaded pair to move axially along the positioning column (31), thereby forming a mechanical locking mechanism for the movement stroke of the limiting pin (39).

7. The enhanced positioning system for a metal strip cutting unit according to claim 1, wherein: The belt pressing device (5) comprises: An outer fixing plate (51) is fixed on the upper pressing plate (22), and one side of the outer fixing plate is rotatably connected to a transfer arm (52); A propulsion cylinder (53) is mounted on the outer fixing plate (51), and an output end of the propulsion cylinder (53) is hinged to one end of the transfer arm (52); The rubber pressing plate (54) is horizontally fixed on the other end of the transfer arm (52).

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