Power mechanism for wire rod coil transfer device

Abstract

The invention discloses a power mechanism for a wire rod coil transfer device. The wire rod coil transfer device comprises a mounting plate and a shifting mechanism, and a bearing mechanism is connected to the upper portion of the shifting mechanism; a rear limiting mechanism and a front limiting mechanism are connected to the bearing mechanism side by side. The second motor module drives the driving rod to rotate, so that the distance between the two bearing plates can be adjusted in place to adapt to wire rod coils with different widths; a third motor module drives a plurality of belt wheels to rotate, so that a lead screw rotates and drives a transmission strip of a rear limiting mechanism to be close to or far away from a front limiting mechanism, and the device adapts to wire rod coils with different lengths; the second motor module and the third motor module can also be started at the same time, under driving of the second motor module, the distance between two second belt wheels in the multiple belt wheels changes, at the moment, the sliding sleeve slides up and down under the action of the tensioning spring, the synchronous belt is kept tensioned, meanwhile, it is guaranteed that the lead screw and the transmission shaft are in stable transmission connection all the time, and the transmission efficiency is improved. The transmission strip of the rear limiting mechanism can also move synchronously, and the use requirement is met.

Description

[0001] This application is a divisional application of the patent application with the application number 202310143315.0 and the application date of February 21, 2023, and the invention name of "A coil of wire rod transfer device". TECHNICAL FIELD

[0002] The present application belongs to the technical field of conveying and discharging, in particular to a power mechanism for a coil of wire rod transfer device. BACKGROUND

[0003] The prior patent application of the applicant with the patent application number "202111549138.3" discloses a coil of wire rod transfer trolley, which limits the coil of wire rod on the bearing seat by setting a front limiting mechanism and a rear limiting mechanism, so as to avoid the coil of wire rod from tilting forward or backward. The moving limiting piece in the rear limiting mechanism can move along the length direction of the bearing seat, so as to adjust the length of the accommodating area formed between the moving limiting piece and the rotating swing arm, so as to adapt to wire rods of different lengths.

[0004] The above-mentioned device has the following disadvantages: the rear limiting mechanism is a manual adjustment structure, which makes the length adjustment accuracy of the accommodating area formed between the moving limiting piece and the rotating swing arm poor, and there is a defect of adjusting the moving limiting piece multiple times; and the distance between the two bearing slopes and the inclination angle of the bearing slope are fixed values, and when transferring wire rods of different diameters, there may be problems such as poor bearing effect.

[0005] The applicant hopes to improve the above-mentioned coil of wire rod transfer trolley, so that the distance between the two bearing seats can be changed to adapt to the width change of the coil of wire rod; on this basis, the rear limiting mechanism also needs to be automatically close to the front limiting mechanism to adapt to the length change of the coil of wire rod. Considering the width and length change of the coil of wire rod, it is necessary to ensure that the adjustment of the distance between the two bearing seats and the distance adjustment of the front and rear limiting mechanisms can be carried out simultaneously or separately. SUMMARY

[0006] The present application provides a power mechanism for a coil of wire rod transfer device, which aims to solve the technical problems raised in the background.

[0007] To solve the above-mentioned technical problems, the present application is realized by the following technical scheme: The present application is a power mechanism for a coil of wire rod transfer device, which includes a mounting plate and a displacement mechanism. The displacement mechanism is connected with a bearing mechanism above. The bearing mechanism is connected with a rear limiting mechanism and a front limiting mechanism side by side. The bearing mechanism includes a pair of symmetrically arranged L-shaped plates. The upper edges of the two L-shaped plates are inclinedly connected with bearing plates. The displacement mechanism can adjust the distance between the two L-shaped plates. The rear limiting mechanism comprises a pair of lead screws arranged horizontally on the opposite outer sides of the two L-shaped plates respectively; two nuts are threadedly connected to the lead screws; the upper surfaces of the two nuts are vertically fixed with transmission bars; the upper ends of the two transmission bars are connected by a rear limiting bar; the rear limiting bar is arranged above the bearing plate. The front limiting mechanism comprises a pair of rotating shafts arranged horizontally on the opposite outer sides of the two L-shaped plates respectively; the rotating shafts are coaxially arranged with the lead screws; the same ends of the rotating shafts are radially fixed with front limiting rods; the lead screws and the rotating shafts are connected by a power mechanism. The power mechanism comprises a third motor module fixed vertically on the lower surface of the mounting plate, and a pair of transmission shafts arranged horizontally on the opposite outer sides of the two L-shaped plates respectively; the transmission shafts are coaxially arranged with the lead screws; the output shaft of the third motor module is fixed with a first pulley; the transmission shafts are fixed with third pulleys; the other ends of the transmission shafts are connected by a first electromagnetic clutch; the other end of one transmission shaft is connected by a second electromagnetic clutch; the first pulley and the third pulleys are connected by a synchronous belt.

[0008] As a preferred technical solution of the present application, the same ends of the two L-shaped plates are connected with the two first sliders on the adjacent first guide rails respectively; the second guide rails are fixed on the lower surfaces of the two L-shaped plates respectively; the bearing space for the coil strip is formed between the two bearing plates.

[0009] As a preferred technical solution of the present application, the bearing plate is rotationally connected with the L-shaped plate; a plurality of second air cylinders are arranged side by side below the bearing plate; the tail ends of the second air cylinders are rotationally connected to the horizontal segments of the L-shaped plates; the output ends of the second air cylinders are rotationally connected to the lower surfaces of the bearing plates; the second air cylinders are arranged on the opposite outer sides of the two L-shaped plates.

[0010] As a preferred technical solution of the present application, the first mounting blocks are rotationally connected to the ends of the two L-shaped plates respectively; the second mounting blocks are rotationally connected to the other ends of the two L-shaped plates respectively.

[0011] As a preferred technical solution of the present application, a pair of accommodating grooves parallel to the first guide rails are symmetrically formed in the upper surface of the mounting plate; the second fixed pulleys are arranged in the accommodating grooves respectively.

[0012] As a preferred technical solution of the present application, the accommodating grooves correspond to the L-shaped plates one by one; the accommodating grooves are arranged between the lead screws and the rotating shafts.

[0013] As a preferred technical scheme of the present application, the power mechanism further comprises a guide rod vertically arranged on one side of the third motor module; the upper end of the guide rod is fixed to the lower surface of the mounting plate; a sliding sleeve is slidably arranged on the guide rod; the upper surface of the sliding sleeve is connected with the lower surface of the mounting plate through a tension spring; a second pulley is rotatably arranged on one side of the sliding sleeve; the second pulley is arranged below the first pulley; the first pulley, the second pulley, the two third pulleys and the two first fixed pulleys are connected through a synchronous belt transmission.

[0014] As a preferred technical scheme of the present application, the transmission shaft is rotatably connected with a third mounting block; the third mounting block is fixed to the horizontal segment of the L-shaped plate; the opposite outer sides of the two transmission shafts are provided with first fixed pulleys; the two first fixed pulleys are respectively arranged on the opposite two side edges of the mounting plate; a pair of second fixed pulleys are arranged between the two first fixed pulleys; the two second fixed pulleys are respectively fixed to the lower surfaces of the horizontal segments of the two L-shaped plates; the first pulley, the second pulley, the two third pulleys, the two first fixed pulleys and the two second fixed pulleys are connected through a synchronous belt transmission.

[0015] As a preferred technical scheme of the present application, one end of the shaft of the second fixed pulley is fixedly sleeved with a fourth pulley; the fourth pulley is connected with a fifth pulley through a belt transmission; the shaft of the fifth pulley is coaxially arranged with the transmission shaft; the other end of the shaft of the fifth pulley is connected with the other end of the other rotating shaft through a third electromagnetic clutch.

[0016] As a preferred technical scheme of the present application, the displacement mechanism comprises a pair of first guide rails fixed side by side on the upper surface of the mounting plate; a pair of first sliding blocks are slidably connected on the first guide rails; the first sliding blocks are connected to the bearing mechanism; a pair of second guide rails are arranged side by side between the two first guide rails; the length direction of the L-shaped plate is parallel to the length direction of the second guide rails; the screw rod is parallel to the second guide rails; the second guide rails are connected to the bearing mechanism; the second guide rails are perpendicular to the first guide rails; second sliding blocks are slidably connected on the second guide rails; the two second sliding blocks are connected through a driving rod; the driving rod is rotatably connected with the second sliding blocks; the middle part of the driving rod is fixed to the output shaft of a second motor module; the second motor module is vertically fixed to the mounting plate.

[0017] The present application has the following beneficial effects: In the present application, when the width of the wire rod coil changes, the second motor module drives the driving rod to rotate, so that the distance between the two bearing plates can be adjusted to adapt to wire rod coils of different widths; when the length of the wire rod coil changes, the third motor module drives the plurality of pulleys to rotate, so that the screw rod rotates and drives the transmission bars of the rear limiting mechanism to approach or move away from the front limiting mechanism, thereby adapting to wire rod coils of different lengths.

[0018] When the length and width of the coil change, the second and third motor modules can be started simultaneously, under the driving of the second motor module, the interval between two second pulleys in the plurality of pulleys changes, at this time, the sliding sleeve slides up and down under the action of the tension spring, adapts to the interval change of the two second pulleys, keeps the synchronous belt tensioned, at the same time, ensures that the lead screw and the transmission shaft are always stably connected, so that the interval of the two bearing plates is adjusted in place, and the transmission bar of the rear limiting mechanism can also be moved synchronously, meeting the use requirement. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed for the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0020] Figure 1 The structure schematic diagram of a power mechanism for a wire rod coil transfer device.

[0021] Figure 2 The structure front view of Figure 1 .

[0022] Figure 3 The structure schematic diagram of the connection between the walking mechanism and the lifting mechanism of the present application.

[0023] Figure 4 The structure schematic diagram of the connection between the shifting mechanism and the bearing mechanism of the present application.

[0024] Figure 5 The structure schematic diagram of the shifting mechanism of the present application.

[0025] Figure 6 The structure schematic diagram of the connection between the bearing mechanism, the rear limiting mechanism and the front limiting mechanism of the present application.

[0026] Figure 7 The structure side view of Figure 6 .

[0027] Figure 8 The structure schematic diagram of the connection between the rear limiting mechanism and the front limiting mechanism of the present application.

[0028] Figure 9 The structure schematic diagram of the power mechanism of the present application.

[0029] Figure 10 The relative position schematic diagram between the first electromagnetic clutch and the third electromagnetic clutch of the present application.

[0030] The components represented by the numbers in the drawings are listed as follows: 1-walking mechanism, 2-lifting mechanism, 3-shifting mechanism, 4-bearing mechanism, 5-rear limiting mechanism, 6-front limiting mechanism, 7-power mechanism, 101-rack, 102-supporting plate, 103-first motor module, 104-driving gear, 105-directional sleeve, 201-first cylinder, 202-telescopic rod, 203-mounting plate, 301-first guide rail, 302-first sliding block, 303-second guide rail, 304-second sliding block, 306-driving rod, 307-second motor module, 401-L-shaped plate, 402-bearing plate, 403-second cylinder, 501-screw rod, 502-first mounting block, 503-screw nut, 504-driving bar, 505-rear limiting bar, 601-rotation shaft, 602-second mounting block, 603-front limiting rod, 604-positioning protrusion, 701-third motor module, 702-driving shaft, 703-guide rod, 704-first electromagnetic clutch, 705-second electromagnetic clutch, 706-first fixed pulley, 707-second fixed pulley, 708-third electromagnetic clutch, 709-synchronous belt, 2031-containing groove, 7011-first pulley, 7021-third mounting block, 7022-third pulley, 7031-sliding sleeve, 7032-tension spring, 7033-second pulley, 7071-fourth pulley, 7072-fifth pulley, 7073-fourth mounting block. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0032] Specific embodiment one: please refer to Figures 1-2 As shown in the drawings, the present application is a wire rod coil transfer device, which comprises a walking mechanism 1 and a lifting mechanism 2 installed on the walking mechanism 1. The upper part of the lifting mechanism 2 is connected with a shifting mechanism 3. The upper part of the shifting mechanism 3 is connected with a bearing mechanism 4. The bearing mechanism 4 is connected with a rear limiting mechanism 5 and a front limiting mechanism 6 side by side. In use, the bearing space of the bearing mechanism 4 is adjusted by the shifting mechanism 3 to adapt to the bearing of wire rod coils of different diameters. Then the wire rod coils are lifted onto the bearing mechanism 4. The wire rod coils on the bearing mechanism 4 are then limited in front and back directions by the rear limiting mechanism 5 and the front limiting mechanism 6. Then the limited wire rod coils are transferred to a material receiving rack for stacking wire rod coils by the walking mechanism 1. The vertical height of the wire rod coils is adjusted by the lifting mechanism 2 to meet the transfer requirements of the wire rod coils, effectively improving the transfer efficiency and effect of the wire rod coils.

[0033] As shown in Figure 3 The walking mechanism 1 comprises a pair of rack gears 101 arranged side by side and a support plate 102 arranged horizontally between the two rack gears 101; the lower surface of the support plate 102 is fixed with a conventional first motor module 103 in the art; the first motor module 103 is composed of a servo motor and a two-stage bevel gear reducer; the first motor module 103 has a pair of coaxially arranged output shafts; a transmission gear 104 corresponding to the rack gear 101 is fixed on each output shaft of the first motor module 103; the transmission gear 104 is engaged with the rack gear 101; a directional sleeve 105 is arranged on each side of the transmission gear 104; two pairs of directional sleeves 105 are fixed on opposite sides of the support plate 102; and the directional sleeves 105 are slidingly connected to the rack gears 101. In use, the first motor module 103 drives the two transmission gears 104 to rotate synchronously and in the same direction, so as to drive the support plate 102 to move along the length direction of the rack gears 101, thereby realizing the transfer operation of the coil.

[0034] As shown in Figure 3 The lifting mechanism 2 comprises a first air cylinder 201 and an extension rod 202 vertically fixed to the lower surface of the support plate 102; the first air cylinder 201 is a conventional element in the art; the extension rod 202 is a conventional structure in the art, which is composed of a rod cylinder and a support rod slidingly inserted into the upper end of the rod cylinder; the output end of the first air cylinder 201 penetrates through the support plate 102 and is fixed with a mounting plate 203 horizontally; the output end of the first air cylinder 201 is in clearance fit with the support plate 102; the upper end of the extension rod 202 penetrates through the support plate 102 and is fixed to the lower surface of the mounting plate 203; and the upper end of the extension rod 202 is in clearance fit with the support plate 102. In use, the first air cylinder 201 drives the mounting plate 203 to move up and down along the length direction of the extension rod 202, thereby adjusting the vertical position of the coil. Specific embodiments

[0035] On the basis of the first specific embodiment, as shown in Figures 4-5As shown, the shifting mechanism 3 comprises a pair of first guide rails 301 fixed side by side on the upper surface of the mounting plate 203; the length direction of the first guide rails 301 is perpendicular to the length direction of the rack 101; a pair of first sliding blocks 302 are slidingly connected on the first guide rails 301; the first sliding blocks 302 are connected to the bearing mechanism 4; a pair of second guide rails 303 are arranged side by side between the two first guide rails 301; the second guide rails 303 are arranged perpendicular to the first guide rails 301; the second guide rails 303 are connected to the bearing mechanism 4; second sliding blocks 304 are slidingly connected on the second guide rails 303; the two second sliding blocks 304 are connected through a driving rod 306; the driving rod 306 is rotationally fitted with the second sliding blocks 304; the middle part of the driving rod 306 is fixed on the output shaft of a conventional second motor module 307 in the art; the second motor module 307 is vertically fixed on the mounting plate 203; the output shaft of the second motor module 307 is gap-fitted with the mounting plate 203; the second motor module 307 is composed of a servo motor and a two-stage bevel gear reducer; the bearing mechanism 4 comprises a pair of symmetrically arranged L-shaped plates 401; the length direction of the L-shaped plates 401 is parallel to the length direction of the second guide rails 303; the two ends of the L-shaped plates 401 facing the same direction are respectively connected with the two first sliding blocks 302 on the adjacent first guide rails 301 through screws; the two second guide rails 303 are respectively screw-connected on the lower surfaces of the two L-shaped plates 401; the upper edges of the two L-shaped plates 401 are both obliquely connected with bearing plates 402; a bearing space for the coil is formed between the two bearing plates 402; the bearing plates 402 are rotationally fitted with the L-shaped plates 401; a plurality of conventional second air cylinders 403 in the art are arranged side by side below the bearing plates 402; the tail ends of the second air cylinders 403 are rotationally connected to the horizontal segments of the L-shaped plates 401; the output ends of the second air cylinders 403 are rotationally connected to the lower surfaces of the bearing plates 402; the second air cylinders 403 are arranged on the opposite outer sides of the two L-shaped plates 401. In use, when it is necessary to adjust the distance between the two L-shaped plates 401, the second motor module 307 drives the driving rod 306 to swing horizontally, which drives the second sliding blocks 304 to slide on the second guide rails 303 and also drives the first sliding blocks 302 to slide on the first guide rails 301, so as to adjust the distance between the two L-shaped plates 401, which can meet the bearing requirements of coil with different diameters; when it is necessary to adjust the inclination angle of the bearing plates 402, the output ends of the second air cylinders 403 are extended or retracted, so as to adjust the inclination angle of the bearing plates 402, which can further ensure the bearing requirements of coil with different diameters. EMBODIMENTS

[0036] On the basis of Embodiment Two, as Figures 6-10As shown, the rear limiting mechanism 5 comprises a pair of lead screws 501 horizontally arranged on the opposite outer sides of the two L-shaped plates 401 respectively; the two lead screws 501 are of the same rotation direction; the lead screws 501 are arranged in parallel with the second guide rails 303; one end of each of the two lead screws 501 is rotatably connected with a first mounting block 502; the two first mounting blocks 502 are fixed on one end of each of the two L-shaped plates 401 respectively; each of the two lead screws 501 is threadedly connected with a nut 503; the upper surface of each of the two nuts 503 is vertically fixed with a transmission bar 504 in L-shaped structure; the upper ends of the two transmission bars 504 are connected with each other through a rear limiting strip 505; the rear limiting strip 505 is arranged above the bearing plate 402; the front limiting mechanism 6 comprises a pair of rotary shafts 601 horizontally arranged on the opposite outer sides of the two L-shaped plates 401 respectively; the rotary shafts 601 are coaxially arranged with the lead screws 501; one end of each of the two rotary shafts 601 is rotatably connected with a second mounting block 602; the two second mounting blocks 602 are fixed on the other end of each of the two L-shaped plates 401 respectively; one end of each of the two rotary shafts 601 which are of the same direction is radially fixed with a front limiting rod 603; one end of the front limiting rod 603 is fixed with a positioning protrusion 604; the positioning protrusion 604 is arranged on one surface of the front limiting rod 603 close to the rear limiting strip 505; the upper surface of the mounting plate 203 is symmetrically provided with a pair of accommodating grooves 2031 parallel with the first guide rails 301; the two accommodating grooves 2031 correspond to the two L-shaped plates 401 respectively; the accommodating grooves 2031 are arranged between the lead screws 501 and the rotary shafts 601; the lead screws 501 and the rotary shafts 601 are connected through a power mechanism 7; The power mechanism 7 is arranged in the accommodating groove 2031; the power mechanism 7 comprises a third motor module 701 vertically fixed to the lower surface of the mounting plate 203, a guide rod 703 vertically arranged at one side of the third motor module 701 and a pair of transmission shafts 702 horizontally arranged at the opposite outer sides of the two L-shaped plates 401 respectively; the third motor module 701 is a conventional element in the art, which is composed of a servo motor and a two-stage bevel gear reducer; a first pulley 7011 is fixedly sleeved on the output shaft of the third motor module 701; the first pulley 7011 is arranged between the third motor module 701 and the guide rod 703; the upper end of the guide rod 703 is fixed to the lower surface of the mounting plate 203; a sliding sleeve 7031 is slidingly sleeved on the guide rod 703; the upper surface of the sliding sleeve 7031 and the lower surface of the mounting plate 203 are connected through a tension spring 7032; a second pulley 7033 is rotatably arranged on one side surface of the sliding sleeve 7031; the second pulley 7033 is arranged directly below the first pulley 7011; the transmission shaft 702 is coaxially arranged with the lead screw 501; a third mounting block 7021 is rotatably connected to the transmission shaft 702; the third mounting block 7021 is fixed to the horizontal section of the L-shaped plate 401; a third pulley 7022 is fixedly sleeved on the transmission shaft 702; one end of each of the two transmission shafts 702 and the other end of each of the two lead screws 501 are connected through a conventional first electromagnetic clutch 704 in the art; the other end of one transmission shaft 702 and the other end of one rotary shaft 601 are connected through a conventional second electromagnetic clutch 705 in the art; a first fixed pulley 706 in the art is arranged on the opposite outer sides of the two transmission shafts 702; the first fixed pulley 706 is composed of a U-shaped seat and a transmission belt pulley rotatably connected in the U-shaped seat; the two first fixed pulleys 706 are arranged on opposite two side edges of the mounting plate 203 respectively; a pair of second fixed pulleys 707 in the art are arranged between the two first fixed pulleys 706; the second fixed pulley 707 is composed of a U-shaped seat and a transmission belt pulley rotatably connected in the U-shaped seat; the two second fixed pulleys 707 are fixed to the lower surfaces of the horizontal sections of the two L-shaped plates 401 respectively; the two second fixed pulleys 707 are arranged in the two accommodating grooves 2031 respectively; the second fixed pulley 707 is clearance-fitted with the accommodating groove 2031; a fourth pulley 7071 is fixedly sleeved on one end of the shaft of one second fixed pulley 707; the fourth pulley 7071 is drivingly connected with a fifth pulley 7072 through a belt; the shaft of the fifth pulley 7072 is coaxially arranged with the transmission shaft 702; a fourth mounting block 7073 is rotatably connected to one end of the shaft of the fifth pulley 7072; the fourth mounting block 7073 is fixed to the horizontal section of one L-shaped plate 401; the other end of the shaft of the fifth pulley 7072 and the other end of the other rotary shaft 601 are connected through a conventional third electromagnetic clutch 708 in the art; the first pulley 7011, the second pulley 7033, the two third pulleys 7022, the two first fixed pulleys 706 and the two second fixed pulleys 707 are drivingly connected through a synchronous belt 709.When the power mechanism 7 is required to drive the rear limiting mechanism 5 to move, the transmission shaft 702 is connected with the lead screw 501 by setting the first electromagnetic clutch 704, and the transmission shaft 702 is separated from the rotating shaft 601 by setting the second electromagnetic clutch 705 and the third electromagnetic clutch 708, then the first pulley 7011 is driven to rotate by the third motor module 701, and the two lead screws 501 are driven to rotate synchronously and in the same direction by the second pulley 7033, the two third pulleys 7022, the two first fixed pulleys 706 and the two second fixed pulleys 707 under the transmission of the synchronous belt 709, so as to drive the nut 503 to drive the rear limiting strip 505 to move linearly through the transmission bar 504, thereby realizing the mechanical adjustment of the distance between the rear limiting strip 505 and the front limiting rod 603, and further realizing the rear side limiting of the coil, and effectively ensuring the adjustment efficiency and effect of the bearing space.

[0037] The preferred embodiments disclosed above are only used to help explain the present application. The preferred embodiments do not describe all the details and do not limit the present application to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of the present application. The present application is selected and described in detail in order to better explain the principles and practical applications of the present application, so that those skilled in the art can well understand and utilize the present application. The present application is limited by the claims and their full scope and equivalents.

Claims

1. A power mechanism for a coil of rod transport device, characterized by: The wire rod coil transferring device comprises a mounting plate (203), a shifting mechanism (3), a bearing mechanism (4) connected above the shifting mechanism (3), a rear limiting mechanism (5) and a front limiting mechanism (6) connected side by side on the bearing mechanism (4), a pair of symmetrically arranged L-shaped plates (401) comprising the bearing mechanism (4), a bearing plate (402) obliquely connected to the upper edges of the two L-shaped plates (401), and the shifting mechanism (3) capable of adjusting the distance between the two L-shaped plates (401). The rear limiting mechanism (5) comprises a pair of lead screws (501) horizontally arranged on the opposite outer sides of the two L-shaped plates (401), a nut (503) threadedly matched on each of the lead screws (501), a transmission bar (504) vertically fixed to the upper surfaces of the two nuts (503), and a rear limiting bar (505) connected between the upper ends of the two transmission bars (504) and arranged above the bearing plate (402). The front limiting mechanism (6) comprises a pair of rotating shafts (601) horizontally arranged on the opposite outer sides of the two L-shaped plates (401), the rotating shafts (601) coaxially arranged with the lead screws (501), a front limiting rod (603) radially fixed to the same end of each of the rotating shafts (601), and a power mechanism (7) connected between the lead screws (501) and the rotating shafts (601). The power mechanism (7) comprises a third motor module (701) vertically fixed to the lower surface of the mounting plate (203), and a pair of transmission shafts (702) horizontally arranged on the opposite outer sides of the two L-shaped plates (401), the transmission shafts (702) coaxially arranged with the lead screws (501), a first pulley (7011) fixedly sleeved on the output shaft of the third motor module (701), a third pulley (7022) fixedly sleeved on the transmission shaft (702), a first electromagnetic clutch (704) connected between one end of each of the transmission shafts (702) and the other end of each of the lead screws (501), a second electromagnetic clutch (705) connected between the other end of one of the transmission shafts (702) and the other end of one of the rotating shafts (601), and a synchronous belt (709) drivingly connected between the first pulley (7011) and the two third pulleys (7022).

2. A power mechanism for a coil transfer device for coiled wire rods as claimed in claim 1, characterized in that The same end of each of the two L-shaped plates (401) is connected with two first sliding blocks (302) on the adjacent first guide rails (301), the two second guide rails (303) are fixed to the lower surfaces of the two L-shaped plates (401), and a bearing space for the wire rod coil is formed between the two bearing plates (402).

3. A power mechanism for a coil transfer device for coiled wire rods as defined in claim 1, wherein The bearing plate (402) is rotationally matched with the L-shaped plate (401); a plurality of second air cylinders (403) are arranged side by side below the bearing plate (402); tail ends of the second air cylinders (403) are rotationally connected to horizontal sections of the L-shaped plates (401); output ends of the second air cylinders (403) are rotationally connected to lower surfaces of the bearing plates (402); and the second air cylinders (403) are arranged on opposite outer sides of the two L-shaped plates (401).

4. A power mechanism for a coil transfer device for coiled wire rods as defined in claim 1, wherein One end of each of the two lead screws (501) is rotationally connected with a first mounting block (502); the two first mounting blocks (502) are fixed to one end of each of the two L-shaped plates (401); one end of each of the two rotating shafts (601) is rotationally connected with a second mounting block (602); and the two second mounting blocks (602) are fixed to the other end of each of the two L-shaped plates (401).

5. A power mechanism for a coil transfer device for coiled wire rods as defined in claim 1, wherein A pair of accommodating grooves (2031) parallel to the first guide rails (301) are symmetrically formed in the upper surface of the mounting plate (203); and the two second pulleys (707) are arranged in the two accommodating grooves (2031) respectively.

6. A power mechanism for a coil transfer device for coiled wire, according to claim 5, wherein The two accommodating grooves (2031) correspond to the two L-shaped plates (401) one by one; and the accommodating grooves (2031) are arranged between the lead screws (501) and the rotating shafts (601).

7. A power mechanism for a coil transfer device for coiled wire, according to claim 1, wherein The power mechanism (7) further comprises a guide rod (703) vertically arranged on one side of the third motor module (701); an upper end of the guide rod (703) is fixed to the lower surface of the mounting plate (203); a sliding sleeve (7031) is slidably sleeved on the guide rod (703); the upper surface of the sliding sleeve (7031) and the lower surface of the mounting plate (203) are connected through a tension spring (7032); a second pulley (7033) is rotationally arranged on one side surface of the sliding sleeve (7031); the second pulley (7033) is arranged below the first pulley (7011); and the first pulley (7011), the second pulley (7033) and the two third pulleys (7022) are drivingly connected through a synchronous belt (709).

8. A power mechanism for a coil transfer device for coiled wire, according to claim 7, characterized in that, A third mounting block (7021) is rotationally connected on the transmission shaft (702); the third mounting block (7021) is fixed to the horizontal section of the L-shaped plate (401); a first fixed pulley (706) is arranged on the opposite outer side of each of the two transmission shafts (702); the two first fixed pulleys (706) are arranged on opposite two side edges of the mounting plate (203) respectively; a pair of second fixed pulleys (707) are arranged between the two first fixed pulleys (706); the two second fixed pulleys (707) are fixed to the lower surfaces of the horizontal sections of the two L-shaped plates (401) respectively; and the first pulley (7011), the second pulley (7033), the two third pulleys (7022), the two first fixed pulleys (706) and the two second fixed pulleys (707) are drivingly connected through the synchronous belt (709).

9. A power mechanism for a coil transfer device for coiled wire, according to claim 8, characterized in that: One end of the axle of the second fixed pulley (707) is fixedly provided with a fourth pulley (7071); the fourth pulley (7071) is connected with a fifth pulley (7072) through belt transmission; the axle of the fifth pulley (7072) is coaxially arranged with the transmission shaft (702); the other end of the axle of the fifth pulley (7072) is connected with the other end of the other rotating shaft (601) through a third electromagnetic clutch (708).

10. A power mechanism for a coil transfer device for coiled wire as defined in claim 1, wherein: The shifting mechanism (3) comprises a pair of first guide rails (301) fixed side by side on the upper surface of the mounting plate (203); a pair of first sliding blocks (302) are slidably connected on the first guide rails (301); the first sliding blocks (302) are connected to the bearing mechanism (4); a pair of second guide rails (303) are arranged side by side between the first guide rails (301); the length direction of the L-shaped plate (401) is arranged in parallel with the length direction of the second guide rails (303); the screw rod (501) is arranged in parallel with the second guide rails (303); the second guide rails (303) are connected to the bearing mechanism (4); the second guide rails (303) are arranged perpendicularly to the first guide rails (301); second sliding blocks (304) are slidably connected on the second guide rails (303); the two second sliding blocks (304) are connected through a driving rod (306); the driving rod (306) is rotationally connected with the second sliding blocks (304); the middle part of the driving rod (306) is fixed on the output shaft of a second motor module (307); the second motor module (307) is vertically fixed on the mounting plate (203).

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