A wire feeding device with adjustable position

Abstract

The present invention relates to the field of conveying devices, and discloses an adjustable wire feeding device, including a base, a guide assembly for guiding the wire and a control assembly for driving the guide assembly are arranged above the base, a side plate for supporting the guide assembly and the control assembly is arranged above the base, and a bracket for rotating and supporting the side plate is fixedly installed on the top of the base; the wire can be moved by the control assembly and the guide assembly, and the wire can also be offset forward and backward along the moving direction. The present invention can adjust the position of the wire relative to the evaporation boat through the cooperation between the bracket, the side plate, the guide assembly and the control assembly, so that the wire can fall to the exact center of the evaporation boat, thereby ensuring the effective evaporation of the material, improving the evaporation efficiency and the material utilization rate, and not only improving the service life of the evaporation boat but also ensuring the production quality of the film material.

Description

Technical Field

[0001] The invention relates to the technical field of conveying devices, and in particular to an adjustable wire feeding device. Background Art

[0002] The wire is transported to the evaporation boat through a wire feeding device, and melts after contacting the high-temperature evaporation boat. The best contact point between the wire and the boat body is generally located at half the length of the boat. In this case, after the wire is melted, the molten liquid will not flow to the end of the evaporation boat or overflow from the boat body.

[0003] However, position deviations may occur in the actual production process, resulting in the wire not being able to contact the optimal position of the evaporation boat, and the existing wire feeding devices are often fixedly connected, and the wire outlet position cannot be changed. When the above problems occur, the wire outlet position cannot be adjusted in time, which in turn increases the production cost, the material evaporation is not uniform, and there are certain limitations in use.

[0004] Therefore, it is necessary to provide an adjustable wire feeding device to solve the above technical problems. Summary of the invention

[0005] The object of the present invention is to provide an adjustable wire feeding device to solve the problems raised in the above background technology.

[0006] In order to achieve the above objectives, an adjustable wire feeding device is designed which can realize stable wire feeding and adjust the wire outlet position.

[0007] Based on the above ideas, the present invention provides the following technical solutions: an adjustable wire feeding device, comprising a base, a guide assembly for guiding the wire and a control assembly for driving the guide assembly are arranged above the base, a side plate for supporting the guide assembly and the control assembly is arranged above the base, and a bracket for rotatably supporting the side plate is fixedly installed on the top of the base; the wire can be moved by the control assembly and the guide assembly, and the wire can also be offset forward and backward along the moving direction.

[0008] As a further solution of the present invention: the guide assembly includes a roller rotatably connected to the side plate and a guide roller slidably connected to the side plate, a first bevel gear transmission-connected to the control assembly is fixedly mounted on the outer surface of the roller, the guide roller is located directly above the roller and an annular groove is provided on its outer surface, and a first spring is fixedly mounted between the top of the guide roller and the side plate.

[0009] As a further solution of the present invention: the control assembly includes a motor fixedly connected to the side plate and a cylinder rotatably connected to the base, the output shaft of the cylinder is rotatably connected to the surface of the motor, and the output shaft of the motor is fixedly mounted with a second bevel gear transmission-connected to the guide assembly.

[0010] As a further solution of the present invention: two reel assemblies are arranged vertically above the base, a support assembly for supporting the two reel assemblies is provided on the base, two second wire guide tubes are fixedly installed on the surface of the side panel and located between the guide assembly and the reel assembly, and the two second wire guide tubes are arranged in an eight-shape as a whole.

[0011] As a further solution of the present invention: the reel assembly includes a cross bar that is movably engaged with the support assembly, there are two cross bars that correspond to each other front and back, a wire reel is fixedly installed between the two cross bars, and a gear ring that meshes with the support assembly is fixedly installed on the outer surface of one of the cross bars.

[0012] As a further solution of the present invention: the wire outlet directions of the upper and lower wire reels are arranged in opposite directions and correspond to two second wire guide tubes respectively.

[0013] As a further solution of the present invention: the support assembly includes a shell fixedly connected to the base, the side wall of the shell is provided with an opening for placing the cross bar, a rack meshing with both gear rings is slidably installed inside the shell, and a second spring is fixedly installed between the surface of the rack and the shell.

[0014] As a further solution of the present invention: the length dimension of the rack in the up-down direction is greater than or equal to the distance dimension between the centers of the two gear rings.

[0015] As a further solution of the present invention: when one of the wire reels starts to discharge material, the other wire reel can be placed towards the opening of the shell.

[0016] As a further solution of the present invention: a first wire guide tube for guiding the wire to be threaded out is fixedly installed on the surface of the side plate and at a position corresponding to the guide assembly.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: through the cooperation between the bracket, side plate, guide assembly and control assembly, the position of the wire relative to the evaporation boat can be adjusted, so that the wire can fall to the center of the evaporation boat, thereby ensuring effective evaporation of the material, improving the evaporation efficiency and material utilization rate, which not only increases the service life of the evaporation boat but also ensures the production quality of the film material; the overall structure is simple and occupies little space, so that more evaporation boats can be arranged along the width direction, thereby further ensuring the evaporation efficiency and being more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0019] Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the present invention;

[0020] Figure 2It is a schematic diagram of the overall structure of the second embodiment of the present invention;

[0021] Figure 3 It is a schematic diagram of the wire outlet direction of two wire reels of the present invention;

[0022] Figure 4 It is a schematic diagram of the structure of the roller and the second wire guide tube of the present invention;

[0023] Figure 5 It is a schematic diagram of the structure of the reel assembly of the present invention;

[0024] Figure 6 It is a schematic diagram of the second wire guide tube and bell mouth structure of the present invention;

[0025] Figure 7 It is a schematic diagram of the push plate and housing structure of the present invention;

[0026] Figure 8 for Figure 7 A magnified view of the structure at center;

[0027] Fig. 9 A top view of the push plate and the protrusion of the present invention;

[0028] Fig.10 It is a schematic diagram of the structure of the long filament tube and the short filament tube of the present invention.

[0029] In the figure: 1, base; 2, bracket; 3, side plate; 4, guide assembly; 5, control assembly; 6, first wire guide tube; 7, second wire guide tube; 8, support assembly; 9, reel assembly; 10, rotating assembly; 401, roller; 402, first bevel gear; 403, guide roller; 404, first spring; 501, motor; 502, cylinder; 503, second bevel gear; 701, bell mouth; 702, long wire tube; 703, short wire tube; 801, shell; 802, rack; 803, second spring; 804, opening; 805, avoidance groove; 806, push plate; 901, cross bar; 902, wire reel; 903, gear ring; 1001, connecting rod; 1002, bump. DETAILED DESCRIPTION

[0030] Embodiment 1:

[0031] See also Figure 1 to Figure 2 An embodiment of the present invention provides an adjustable wire feeding device, which is mainly used to adjust the contact position of the wire relative to the evaporation boat. The device includes a base 1, and a guide component 4 for guiding the wire and a control component 5 for driving the guide component 4 are arranged above the base 1. A side plate 3 for supporting the guide component 4 and the control component 5 is arranged above the base 1, and a bracket 2 for rotatably supporting the side plate 3 is fixedly installed on the top of the base 1.

[0032] When in use, the wire passes through the guide assembly 4, and the control assembly 5 is restarted to achieve stable movement of the wire through the guide assembly 4, and the wire can also be offset forward and backward along the moving direction through the guide assembly 4. In order to better guide the wire, a first wire guide tube 6 for the wire to pass through is also fixedly installed on the side plate 3.

[0033] In this embodiment, the base 1 is a part of the machine during actual operation. An evaporation boat (not shown in the figure) for heating the wire is also provided on the left side of the first wire guide tube 6. The length direction of the evaporation boat is parallel to the moving direction of the wire. When the control component 5 drives the wire to shift forward and backward along the moving direction, the wire is shifted forward and backward relative to the center position of the length direction of the evaporation boat.

[0034] See also Figures 1 to 3 In this embodiment, preferably: the guide assembly 4 includes a roller 401 rotatably connected to the side plate 3 and a guide roller 403 slidably connected to the side plate 3, and a first bevel gear 402 drivingly connected to the control assembly 5 is fixedly installed on the outer surface of the roller 401, so as to realize the power transmission of the roller 401. The guide roller 403 is located directly above the roller 401 and has an annular groove on its outer surface, so as to realize better positioning and guiding of the wire material, and a first spring 404 is fixedly installed between the top of the guide roller 403 and the side plate 3. Under the action of the first spring 404, the guide roller 403 has a tendency to slide vertically downward, so as to adapt to wire materials of different sizes.

[0035] In the above structure, the outer surface of the roller 401 has carvings, and when the roller 401 rotates along with the first bevel gear 402, the annular groove of the guide roller 403 can drive the wire to move stably.

[0036] Further, the control assembly 5 includes a motor 501 fixedly connected to the side plate 3 and a cylinder 502 rotatably connected to the base 1, the output shaft of the cylinder 502 is rotatably connected to the surface of the motor 501, the output shaft of the motor 501 is fixedly mounted with a second bevel gear 503 drivingly connected to the first bevel gear 402, and the cylinder 502 can realize the offset of the motor 501 and the side plate 3 based on the bracket 2. Of course, the cylinder 502 can also be replaced by existing technologies such as an electric push rod or a connecting rod structure.

[0037] When in use, the wire passes through between the roller 401 and the guide roller 403 and then enters the first wire guide tube 6, and then the motor 501 is started to drive the roller 401 to rotate through the second bevel gear 503 and the first bevel gear 402, so as to realize the stable movement of the wire along the first wire guide tube 6; in this process, the starting cylinder 502 can drive the side plate 3, the motor 501, the roller 401 and the first wire guide tube 6 to swing as a whole, thereby realizing the position adjustment of the wire in the length direction of the evaporation boat.

[0038] To sum up, through the cooperation of structures such as the roller 401, the first wire guide tube 6, the guide roller 403 and the side plate 3, the position of the wire relative to the evaporation boat can be adjusted, so that the wire can fall to the center of the evaporation boat, thereby ensuring effective evaporation of the material, improving the evaporation efficiency and material utilization rate, which not only increases the service life of the evaporation boat but also ensures the production quality of the film material; the overall structure is simple and occupies little space, so that more evaporation boats can be arranged along the width direction, thereby further ensuring the evaporation efficiency and being more practical.

[0039] Embodiment 2:

[0040] See also Figures 1 to 4 On the basis of the first embodiment, in order to facilitate the replacement of the wire, two reel assemblies 9 arranged in an upper and lower manner are provided above the base 1, and a support assembly 8 for supporting the two reel assemblies 9 is also provided on the base 1.

[0041] Since there is still a distance between the reel assembly 9 and the roller 401, a second wire guide tube 7 is fixedly installed on the surface of the side plate 3 and between the roller 401 and the reel assembly 9. The two second wire guide tubes 7 correspond to the two reel assemblies 9 respectively, and are arranged in an eight-shaped shape as a whole. The wires of the two reel assemblies 9 are respectively led to the two second wire guide tubes 7, then enter between the roller 401 and the guide roller 403, and finally enter the first wire guide tube 6.

[0042] See also Figures 1 to 5 In this embodiment, preferably: the reel assembly 9 includes a cross bar 901 that is movably engaged with the support assembly 8, the number of the cross bars 901 is two and they correspond to each other in the front and back, a wire reel 902 is fixedly installed between the two cross bars 901, and a gear ring 903 that meshes and drives with the support assembly 8 is fixedly installed on the outer surface of one of the cross bars 901. When the roller 401 drives the wire to move, the wire is transported from the second wire guide tube 7 to the roller 401 through the wire reel 902, and then the gear is driven to move synchronously through the cross bar 901.

[0043] In the above structure, the wire output directions of the upper and lower wire discs 902 are opposite. Figure 3 It can be seen that the lower wire reel 902 discharges wire counterclockwise from the top, and the upper wire reel 902 discharges wire clockwise from the bottom, and they are respectively led to the corresponding second wire guide tubes 7.

[0044] Furthermore, the supporting assembly 8 includes a shell 801 fixedly connected to the base 1, and an opening 804 is provided on the right side of the shell 801 for quick access and placement of the cross bar 901. A rack 802 (the length of the rack 802 in the up and down directions is greater than or equal to the center distance between the two gear rings 903) is installed inside the shell 801 in an up and down sliding manner, and the second spring 803 is fixedly installed between the surface of the rack 802 and the shell 801. Under the action of the second spring 803, the rack 802 is located in the middle of the left side of the two gear rings 903 in the initial state. No matter whether the rack 802 moves downward to mesh with the lower gear ring 903, or moves upward to mesh with the upper gear ring 903, the second spring 803 has a tendency to reset the rack 802 back to the middle of the two gear rings 903.

[0045] Furthermore, the housing 801 has space at the top and bottom for the rack 802 to move (this can be achieved by opening a hole). If one wants to shorten the length of the rack 802 in the top and bottom directions, this can also be achieved by shortening the distance between the two wire reels 902 .

[0046] It should be noted that if Figure 4 As shown, the ends of the second wire guide tube 7 and the first wire guide tube 6 near the roller 401 are both provided with a slope, so that the wire can better enter the middle of the roller 401 and the guide roller 403, and the slope is also convenient for the arrangement of the two second wire guide tubes 7. At the same time, after the wire reel 902 is placed on the bracket 2 through the cross bar 901, it is necessary to insert a part of the length of the wire into the second wire guide tube 7 in advance to facilitate the subsequent movement of the wire.

[0047] When in use, the wire passes through the first wire guide tube 6 between the roller 401 and the guide roller 403 and then leads out. The working process and effect of this part are the same as those in Example 1, and will not be repeated here. The difference is that when the roller 401 and the guide roller 403 drive the wire of one of the wire reels 902 to move from the corresponding second wire guide tube 7, the wire will drive the wire reel 902 to rotate. When the lower wire reel 902 is pulled first, the lower gear ring 903 will be driven to rotate counterclockwise, thereby causing the rack 802 to move downward and squeeze the second spring 803. Finally, the rack 802 will move to the bottom of the lower gear ring 903, and under the action of the second spring 803, it will always remain in mesh with the lower gear ring 903; in this process, another reel is placed in the gap above the shell 801 and a certain length of wire is pre-placed in the upper second wire guide tube 7.

[0048] After the last roll of wire on the lower wire reel 902 is used, the movement of the wire driven by the roller 401 and the guide roller 403 can no longer drive the lower wire reel 902 to rotate. At this time, the lower wire reel 902 no longer rotates and the wire is no longer in contact with the lower wire reel 902. Under the action of the second spring 803, the rack 802 rises and resets and meshes with the upper wire reel 902 for transmission, so that the upper wire reel 902 rotates clockwise to further release the wire, so that more wire can move to the upper second wire guide tube 7. Finally, the wire of the upper wire reel 902 is extended by the upper second wire guide tube 7 to enter between the roller 401 and the guide roller 403, and is sandwiched between the roller 401 and the guide roller 403 for transportation. During the transportation process, the upper wire reel 902 drives the upper gear ring 903 to rotate continuously clockwise, so that the rack 802 is located above the upper gear ring 903 and can still remain engaged.

[0049] It should also be noted that in this embodiment, the two wire reels 902 are not placed at the same time. The roller 401 needs to drive the wire of one of the wire reels 902 to move before the other wire reel 902 can be placed. In this way, the rack 802 will not drive the other wire reel 902 to rotate and cause interference, and will not affect the wire release of the other wire reel 902 to the corresponding second wire guide tube 7.

[0050] At the same time, because when the wire material of one of the wire reels 902 is separated from the wire reel 902, the wire reel 902 will immediately drive the next wire reel 902 to further discharge the material into the corresponding second wire guide tube 7 through the rack 802, and the wire material corresponding to the previous wire reel 902 will still have residual material in the second wire guide tube 7, that is, during this period of time, the roller 401 and the guide roller 403 still maintain the feeding state to the first wire guide tube 6, and the subsequent next wire reel 902 further discharges the material into the corresponding second wire guide tube 7, which will make the wire material of the next wire reel 902 quickly replenished between the roller 401 and the guide roller 403, so that the wire material between the roller 401 and the guide roller 403 is uninterrupted.

[0051] In the first embodiment, the position adjustment of the wire is achieved through structures such as the roller 401 and the guide roller 403, but the replenishment of the wire is still very troublesome, thereby failing to improve the evaporation efficiency and ensure the production quality of the film material, and having certain limitations in use.

[0052] Compared with the first embodiment, the coordination of the gear, the gear ring 903, the second wire guide tube 7 and the housing 801 can realize the rapid and automatic replenishment of the wire material and the wire material is continuously replenished during replenishment, thereby further improving the evaporation efficiency and ensuring the production quality of the film material. The overall design is combined with the rotation of the wire reel 902 driven by the wire material, which will not affect the pre-discharge of the wire reel 902 to the second wire guide tube 7, and has stronger applicability.

[0053] Embodiment three:

[0054] See also Figures 1 to 9 On the basis of the second embodiment, in order to facilitate the pre-discharging of the wire reel 902 to the corresponding second wire guide tube 7, the end of the second wire guide tube 7 away from the roller 401 is configured as a bell mouth 701.

[0055] Further, in order to prevent the wire material pre-discharged in the second wire guide tube 7 below from automatically sliding downward due to gravity, the second wire guide tube 7 below is composed of a long wire tube 702 and a short wire tube 703 that is movably fitted with the long wire tube 702, and the bell mouth 701 is located on the side of the long wire tube 702 away from the short wire tube 703, wherein the short wire tube 703 is fixedly connected to the side plate 3, and a rotating assembly 10 is provided between the long wire tube 702 and the housing 801. When the lower wire reel 902 is discharged (i.e., when the lower wire reel 902 rotates), the rotating assembly 10 will not rotate, so that the long wire tube 702 and the short wire tube 703 remain in a fitted state, and when the upper wire reel 902 is discharged, the rotating assembly 10 rotates, so that the long wire tube 702 rotates counterclockwise and separates from the short wire tube 703, and at this time, the left side of the long wire tube 702 points downward (in the same direction as the second wire guide tube 7 above).

[0056] In order to realize the rotation of the rotating assembly 10, a push plate 806 corresponding to the position of the rotating assembly 10 is fixedly installed on the surface of the rack 802. The push plate 806 is L-shaped and located at the lower side of the rack 802. When the rack 802 is located between the two gear rings 903 or the gear ring 903 is located below the lower gear ring 903, the push plate 806 will not contact the rotating assembly 10; when the rack 802 contacts the upper gear ring 903 and the upper wire reel 902 starts to discharge, the push plate 806 rises with the rack 802 and then contacts the rotating assembly 10 to drive the rotating assembly 10 to rotate.

[0057] In order to enable the push plate 806 to move along with the rack 802 without interfering with the housing 801 , a vertically arranged avoidance groove 805 is provided through one side of the housing 801 close to the second wire guide tube 7 .

[0058] See also Figures 1 to 10 In this embodiment, preferably: the rotating component 10 includes a partition fixedly connected to the shell 801, and a connecting rod 1001 fixedly connected to the filament tube 702 is rotatably installed on the surface of the partition, and a protrusion 1002 corresponding to the upper and lower positions of the push plate 806 is fixedly installed on the outer surface of the connecting rod 1001. When the push plate 806 rises, it contacts the protrusion 1002 and drives the connecting rod 1001 and the filament tube 702 to rotate counterclockwise.

[0059] In order to ensure the active fit between the long filament tube 702 and the short filament tube 703 under normal conditions, a torsion spring (not shown in the figure) is also sleeved on the outer surface of the connecting rod 1001. Under the action of the torsion spring, the connecting rod 1001 has a tendency to drive the long filament tube 702 to rotate clockwise, thereby maintaining fit with the right side of the short filament tube 703.

[0060] In order to avoid interference between the right side of the short filament tube 703 and the long filament tube 702 , the right side of the short filament tube 703 and the left side of the long filament tube 702 can be provided with an arc, and the short filament tube 703 and the long filament tube 702 can fit exactly.

[0061] When in use, the wire passes through the first wire guide tube 6 from between the roller 401 and the guide roller 403 and is then led out, and the wire is continuously and automatically replenished through the toothed ring 903 and the rack 802. The working process and effect of this part are the same as those in Example 2 and will not be repeated here. The difference is that: when the machine is stopped and no material is being discharged, the rack 802 is located in the middle of the left side of the two toothed rings 903 under the action of the second spring 803, driving the push plate 806 to separate from the protrusion 1002. At this time, the filament tube 702 can remain in contact with the short filament tube 703 under the action of the torsion spring and the connecting rod 1001; when the lower wire reel 902 is discharging material, the rack 802 is located below the lower toothed ring 903. At this time, the push plate 806 separates from the protrusion 1002 and the filament tube 702 can also remain in contact with the short filament tube 703; when the upper wire reel 902 is discharging material, the rack 802 is located above the upper toothed ring 903. At this time, the rack 802 drives the push plate 806 to rise synchronously and contact with the protrusion 1002, which can drive the connecting rod 1001 to drive the filament tube 702 to rotate counterclockwise, so that the filament tube 702 and the upper second wire guide tube 7 are roughly in the same direction.

[0062] It should be noted that, in conjunction with the design of the rotation of the filament tube 702 in the present embodiment, it is best to place the wire reel 902 in the upper opening 804 first when in use, and then place the wire reel 902 in the lower opening 804 when the upper wire reel 902 starts to discharge material. This allows the filament reel 902 to rotate counterclockwise so that the lower bell-shaped mouth 701 faces upward, making it easier to pre-discharge material into the filament tube 702 and further improving work efficiency.

[0063] In the second embodiment, the automatic replenishment of wire can be achieved through structures such as gears and gear rings 903. However, the second wire guide tube 7 below is arranged to be tilted upward, so that the pre-released wire will automatically fall off due to gravity when it enters the tube, thereby affecting the further release of the wire reel 902 below. It is also impossible to achieve subsequent replenishment of wire to the roller 401, and there are certain limitations in use.

[0064] Compared with the second embodiment, through the cooperation of the connecting rod 1001, the rack 802, the push plate 806 and the protrusion 1002, when not working and the lower wire reel 902 is unloading, the long filament tube 702 can keep in contact with the short filament tube 703 without affecting the stable feeding of the lower wire reel 902. When the upper wire reel 902 is unloading, the long filament tube 702 can be driven to rotate counterclockwise so that the bell mouth 701 of the long filament tube 702 faces upward; at this time, if the material is unloaded into the long filament tube 702 in advance, on the one hand, the bell mouth 701 faces upward to facilitate alignment and insertion, and on the other hand, it can prevent the wire from sliding out of the long filament tube 702 due to gravity, thereby ensuring the stable replenishment of the wire. The overall design is combined with the movement of the rack 802 to ensure the overall stable automatic feeding and meet more needs in actual use.

Claims

1. An adjustable wire feeding device, comprising a base, characterized in that: A guide assembly for guiding the wire and a control assembly for driving the guide assembly are arranged above the base, a side plate for supporting the guide assembly and the control assembly are arranged above the base, and a bracket for rotating the supporting side plate is fixedly installed on the top of the base; the wire can be moved by the control assembly and the guide assembly, and the wire can also be offset forward and backward along the moving direction; Two reel assemblies arranged in an upper and lower arrangement are arranged above the base, a support assembly for supporting the two reel assemblies is arranged on the base, two second wire guide tubes are fixedly installed on the surface of the side plate and located between the guide assembly and the reel assembly, and the two second wire guide tubes are arranged in an eight-shaped shape as a whole; The reel assembly includes a cross bar that is movably engaged with the support assembly, the number of the cross bars is two and they are arranged front to back, a wire reel is fixedly installed between the two cross bars, and a gear ring that meshes with the support assembly is fixedly installed on the outer surface of one of the cross bars; The support assembly includes a shell fixedly connected to the base, a side wall of the shell is provided with an opening for placing a cross bar, a rack meshing with two gear rings is slidably installed inside the shell, and a second spring is fixedly installed between the surface of the rack and the shell.

2. The adjustable wire feeding device according to claim 1, characterized in that: The guide assembly includes a roller rotatably connected to the side plate and a guide roller slidably connected to the side plate. A first bevel gear transmission-connected to the control assembly is fixedly mounted on the outer surface of the roller. The guide roller is located directly above the roller and an annular groove is provided on its outer surface. A first spring is fixedly mounted between the top of the guide roller and the side plate.

3. The adjustable wire feeding device according to claim 1, characterized in that: The control assembly includes a motor fixedly connected to the side plate and a cylinder rotatably connected to the base, the output shaft of the cylinder is rotatably connected to the surface of the motor, and the output shaft of the motor is fixedly mounted with a second bevel gear transmission-connected to the guide assembly.

4. The adjustable wire feeding device according to claim 1, characterized in that: The wire outlet directions of the upper and lower wire reels are oppositely arranged and correspond to two second wire guide tubes respectively.

5. The adjustable wire feeding device according to claim 1, characterized in that: The length dimension of the rack in the up-down direction is greater than or equal to the distance dimension between the centers of the two gear rings.

6. The adjustable wire feeding device according to claim 1, characterized in that: When one of the wire reels begins to discharge material, the other wire reel can be placed toward the opening of the shell.

7. The adjustable wire feeding device according to any one of claims 1 to 6, characterized in that: A first wire guide tube for guiding the wire material to be threaded out is fixedly installed on the surface of the side plate and at a position corresponding to the guide assembly.

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