Automatic wire feeding mechanism for flame brazing

Abstract

The utility model discloses an automatic wire feeding mechanism for flame brazing, which comprises a base, a lifting component is arranged above the base, and a wire feeding component is arranged above the lifting component. A plurality of brazing filler metal wires can be fed into a welding seam in batches at the same time, an operator does not need to fill new brazing filler metal wires frequently, the working efficiency is high, the workload is small, the brazing filler metal wires can be effectively positioned and guided in the wire feeding process, it is ensured that the brazing filler metal wires can be accurately fed into a flame brazing welding seam area, and the welding quality is improved. And the wire feeding height and angle can be adjusted at any time as required without dismounting and remounting related parts.

Description

Technical Field

[0001] The utility model belongs to the technical field of brazing wire feeding, in particular to an automatic wire feeding mechanism for flame brazing. Background Art

[0002] Flame brazing is a common brazing method that uses a controlled flame as a heat source to melt a filler metal and insert it between two base materials, thereby bonding them together. Flame brazing is widely used in metal piping, electronics, refrigeration equipment, and aerospace applications. It is also frequently used in the production and processing of copper tubes for air conditioner radiators.

[0003] When performing flame brazing, the solder wire needs to be continuously fed into the weld area so that the solder wire can melt and fill the joint to form a strong bond. The traditional brazing wire feeding method is for the operator to manually feed the solder wire into the welding area. Although this wire feeding method is suitable for short-term welding tasks, it has high requirements for the operator and requires skilled operation techniques. There are some automatic wire feeding devices on the market. For example, a welding wire feeding mechanism disclosed on the China Patent Network has a publication number of CN207013892U. This wire feeding mechanism can automatically feed the solder wire into the weld without manual operation. It is suitable for long welds or continuous mass production. However, there are some defects and deficiencies that need to be improved: (1) Due to structural design reasons, some existing wire feeding devices can only feed a single solder wire at the same time when feeding. After each solder wire is fed, the operator needs to refill the new solder wire, which not only reduces the overall work efficiency, but also reduces the overall work efficiency. rate, and also increases the workload of operators; (2) some existing wire feeding equipment is difficult to effectively position and guide the solder wire during the wire feeding process, and the solder wire is prone to slipping and deflecting during the wire feeding process, resulting in the solder wire being unable to be accurately fed into the weld area of the flame brazing, which in turn makes the weld quality unstable, resulting in insufficient strength of the flame brazing or waste of solder wire; (3) some existing wire feeding equipment can often only be fixed in a specified position for use, and it is difficult to adjust the wire feeding height and angle at any time during wire feeding. The relevant components need to be disassembled and reinstalled, which is cumbersome and inconvenient. Therefore, in response to the above problems, the automatic wire feeding mechanism for flame brazing provided by the utility model is of great significance. Utility Model Content

[0004] The utility model provides an automatic wire feeding mechanism for flame brazing, which can feed multiple solder wires into the weld in batches at the same time through the wire feeding assembly, without the need for the operator to frequently fill in new solder wires, thereby greatly improving the overall work efficiency and effectively reducing the workload of the operator; the solder wire can be clamped by the combined action of the positioning groove and the wire feeding groove to prevent the solder wire from slipping and displacement during the wire feeding process, and the solder wire can be guided by each guide hole to ensure that the solder wire can be accurately fed into the weld area of the flame brazing, thereby avoiding insufficient flame brazing or waste of solder wire due to unstable weld quality; the wire feeding height and angle can be adjusted at any time according to needs without disassembling and reinstalling the relevant components, thereby making the adjustment of the wire feeding process more convenient, and in summary, solves the problems in the background technology.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The utility model discloses an automatic wire feeding mechanism for flame brazing, comprising a base, a lifting assembly is arranged above the base, and a wire feeding assembly is arranged above the lifting assembly;

[0007] The lifting assembly includes an electric telescopic rod and a lifting frame. An adjustment hole is opened at the center of the top of the lifting frame, and a fixing plate is fixedly connected to the inner wall of the lifting frame. The electric telescopic rod is installed on the base, and the top end of the output shaft of the electric telescopic rod is fixedly connected to the bottom of the fixing plate.

[0008] The wire feeding assembly includes a wire feeding frame, a motor is installed on one side of the wire feeding frame, a wire feeding roller is fixedly connected to the output shaft of the motor, a roller body of the wire feeding roller is provided with a plurality of wire feeding grooves, and a wire pressing roller is provided above the wire feeding roller, the wire pressing roller is the same length as the wire feeding roller, a roller body is provided with a plurality of positioning grooves, and an axial hole is provided at the center of the wire pressing roller, a roller shaft is inserted into the axial hole, and both ends of the roller shaft are fixedly connected to the two sides of the wire feeding frame, a screw is fixedly connected to the bottom of the wire feeding frame, the diameter of the screw is equal to the aperture of the adjustment hole, and a nut matching it is threadedly connected to the screw, and the front end face of the wire feeding frame is fixedly connected to a wire guide frame, and a plurality of guide holes are provided on the wire guide frame.

[0009] Furthermore, the wire feeding grooves and positioning grooves are both arc-shaped, have the same number and equal diameters, and are linearly distributed at equal intervals along the length directions of the wire feeding roller and the wire pressing roller, respectively.

[0010] Furthermore, the number of the guide holes is the same as the number of the wire feeding slots and the positioning slots, and each of the guide holes is located between the corresponding wire feeding slot and the positioning slot.

[0011] Furthermore, the hole wall of each guide hole is provided with an anti-wear ring.

[0012] Furthermore, both sides of the lifting frame are L-shaped, and a number of limiting holes are opened at the bottom of both sides of the lifting frame. A number of guide rods are fixedly connected to both sides of the top of the base. The number of the guide rods is the same as the limiting holes, and the rod diameter is equal to the hole diameter of the limiting holes, and the center of each guide rod corresponds one-to-one to the center of each limiting hole.

[0013] Furthermore, a pair of limiting grooves are provided on the top of the lifting frame, the limiting grooves are arc-shaped and symmetrically distributed about the adjustment hole, and a pair of limiting rods are fixedly connected to the bottom of the wire feeding frame, the rod diameter of the limiting rods is equal to the groove width of the limiting grooves, and the bottom ends of the limiting rods extend into the corresponding limiting grooves.

[0014] Furthermore, a plurality of reinforcing ribs are fixedly connected to both sides of the top of the fixing plate. The reinforcing ribs are X-shaped, and the tops thereof are fixedly connected to the top inner wall of the lifting frame. The reinforcing ribs are equidistantly linearly distributed along the length direction of the fixing plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) When the automatic wire feeding mechanism for flame brazing in the present invention is in use, a plurality of solder wires can be fed into the weld in batches simultaneously through the wire feeding assembly, without the need for the operator to frequently fill new solder wires, thereby greatly improving the overall work efficiency and effectively reducing the workload of the operator;

[0017] (2) When the automatic wire feeding mechanism for flame brazing of the utility model is in use, the solder wire can be clamped by the combined action of the positioning groove and the wire feeding groove to prevent the solder wire from slipping and displacement during the wire feeding process, and the solder wire can be guided by the various guide holes to ensure that the solder wire can be accurately fed into the weld area of the flame brazing, thereby avoiding the flame brazing being not firm enough or the waste of solder wire due to unstable weld quality;

[0018] (3) When the automatic wire feeding mechanism for flame brazing in the utility model is used, the wire feeding height and angle can be adjusted at any time according to needs without disassembling and reinstalling the relevant components, thereby making the adjustment of the wire feeding process more convenient.

[0019] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 This is a structural schematic diagram of an automatic wire feeding mechanism for flame brazing according to the present invention;

[0022] Figure 2 This is a schematic structural diagram of the base in the present utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the lifting assembly in the utility model;

[0024] Figure 4 This is a schematic structural diagram of the wire feeding assembly in the present invention;

[0025] Figure 5 It is a structural schematic diagram of the wire guide frame in the utility model.

[0026] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0027] 1. Base; 2. Electric telescopic rod; 3. Lifting frame; 4. Adjustment hole; 5. Fixing plate; 6. Wire feed frame; 7. Motor; 8. Wire feed roller; 9. Wire feed groove; 10. Wire pressing roller; 11. Positioning groove; 12. Roller shaft; 13. Screw; 14. Nut; 15. Wire guide frame; 16. Guide hole; 17. Anti-wear ring; 18. Limit hole; 19. Guide rod; 20. Limit groove; 21. Limit rod; 22. Reinforcement rib. DETAILED DESCRIPTION

[0028] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be understood that terms such as "relative", "one end", "inside", "lateral", "end", "two ends", "both sides", "front", "one end face", "the other end face" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0030] See also Figure 1-5 As shown, the utility model is an automatic wire feeding mechanism for flame brazing, comprising a base 1, a lifting assembly is provided above the base 1, and a wire feeding assembly is provided above the lifting assembly;

[0031] The lifting assembly includes an electric telescopic rod 2 and a lifting frame 3. An adjustment hole 4 is opened at the top center of the lifting frame 3, and a fixing plate 5 is fixedly connected to the inner wall of the lifting frame 3. The electric telescopic rod 2 is installed on the base 1, and the top end of its output shaft is fixedly connected to the bottom of the fixing plate 5.

[0032] The wire feeding assembly includes a wire feeding frame 6, a motor 7 is installed on one side of the wire feeding frame 6, a wire feeding roller 8 is fixedly connected to the output shaft of the motor 7, a roller body of the wire feeding roller 8 is provided with a plurality of wire feeding grooves 9, and a wire pressing roller 10 is provided above the wire feeding roller 8, the wire pressing roller 10 is the same length as the wire feeding roller 8, a plurality of positioning grooves 11 are provided on its roller body, and an axial hole is provided at the center of the wire pressing roller 10, a roller shaft 12 is inserted into the axial hole, and both ends of the roller shaft 12 are fixedly connected to both sides of the wire feeding frame 6, and a screw 13 is fixedly connected to the bottom of the wire feeding frame 6, and the diameter of the screw 13 is the same as the aperture of the adjustment hole 4. The screw 13 is threadedly connected to a nut 14 that matches it. The front end surface of the wire feeding frame 6 is fixedly connected to a wire guide frame 15. The wire guide frame 15 is provided with a plurality of guide holes 16. When feeding the wire, multiple solder wires can be placed in the corresponding wire feeding grooves 9 on the wire feeding roller 8. At this time, the driving motor 7 can drive the wire feeding roller 8 to rotate. When the wire feeding roller 8 rotates, the solder wire can be driven to move, so that multiple solder wires can be fed into the weld in batches at the same time without the operator having to frequently fill in new solder wires, thereby greatly improving the overall work efficiency and effectively reducing the workload of the operator.

[0033] Among them, the wire feeding groove 9 and the positioning groove 11 are both arc-shaped, with the same number and equal diameter, and the wire feeding groove 9 and the positioning groove 11 are equidistantly linearly distributed along the length direction of the wire feeding roller 8 and the wire pressing roller 10 respectively. When feeding the wire, each positioning groove 11 and wire feeding groove 9 can be respectively fitted on the top and bottom of the corresponding solder wire. As the wire feeding roller 8 rotates, the wire pressing roller 10 will rotate together under the action of friction. At this time, the solder wire can be clamped by the joint action of the positioning groove 11 and the wire feeding groove 9 to prevent the solder wire from slipping and displacement during the wire feeding process.

[0034] Among them, the number of guide holes 16 is the same as the wire feeding groove 9 and the positioning groove 11, and each guide hole 16 is located between the corresponding wire feeding groove 9 and the positioning groove 11. When the solder wire moves with the rotation of the wire feeding roller 8, it can be aligned with and pass through the corresponding guide hole 16. The outlet of the guide hole 16 is aligned with the weld area of the flame brazing, so that the solder wire can be guided through each guide hole 16 to ensure that the solder wire can be accurately fed into the weld area of the flame brazing, thereby avoiding the flame brazing being not firm enough or the waste of solder wire due to unstable weld quality.

[0035] Among them, the hole wall of each guide hole 16 is provided with an anti-wear ring 17. The anti-wear ring 17 is made of elastic materials such as rubber and is fixed by glue or other means. When the solder wire passes through the guide hole 16, the anti-wear ring 17 can play an anti-wear protection role to prevent the solder wire from directly contacting the hole wall surface of the guide hole 16 and causing wear.

[0036] Among them, both sides of the lifting frame 3 are L-shaped, and a number of limiting holes 18 are opened at the bottom of both sides of the lifting frame 3. A number of guide rods 19 are fixedly connected to both sides of the top of the base 1. The number of guide rods 19 is the same as the limiting holes 18, and the rod diameter is equal to the aperture of the limiting holes 18. The center of each guide rod 19 corresponds one-to-one with the center of each limiting hole 18. By driving the electric telescopic rod 2, the lifting assembly can be driven up and down together with the wire feeding assembly, so that the wire feeding height can be adjusted at any time as needed. When the lifting frame 3 moves up and down, the mutual cooperation between the guide rods 19 and the limiting holes 18 can play a limiting role to prevent the lifting assembly from shaking and tilting during the up and down movement.

[0037] Among them, a pair of limit slots 20 are opened on the top of the lifting frame 3. The limit slots 20 are arc-shaped and symmetrically distributed about the adjusting hole 4. A pair of limit rods 21 are fixedly connected to the bottom of the wire feeding frame 6. The rod diameter of the limit rod 21 is equal to the slot width of the limit slot 20, and the bottom end of the limit rod 21 extends into the corresponding limit slot 20. The wire feeding frame 6 can drive the screw 13 to rotate around the adjusting hole 4 so as to adjust the wire feeding angle at any time according to needs. The angle of the wire feeding frame 6 can be fixed by tightening the nut 14 on the screw 13. When the wire feeding frame 6 rotates, it can drive the limit rod 21 to deflect along the limit slot 20. At this time, the mutual cooperation between the limit rod 21 and the limit slot 20 can play a limiting role to prevent the wire feeding frame 6 from shaking and tilting during the rotation process.

[0038] Among them, a number of reinforcing ribs 22 are fixedly connected to both sides of the top of the fixing plate 5. The reinforcing ribs 22 are X-shaped, and their tops are fixedly connected to the top inner wall of the lifting frame 3. The reinforcing ribs 22 are evenly distributed linearly along the length direction of the fixing plate 5. The fixing plate 5 and the lifting frame 3 can be supported and reinforced by multiple reinforcing ribs 22, so as to improve the structural strength of the fixing plate 5 and the lifting frame 3, thereby preventing them from bending and deformation after being subjected to stress for a long time.

[0039] The circuits, electronic components and chip modules involved in the present invention are all existing technologies and can be fully implemented by those skilled in the art. Needless to say, the content protected by the present invention does not involve improvements to software and methods.

[0040] The standard parts used in the application documents can all be purchased on the market. All the components in this application document can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt mature conventional means such as bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology. The electrical components appearing in this article are all electrically connected to the external main controller and 220V AC power, and the main controller is a conventional known device that can play a control role.

[0041] The working principle of this utility model is:

[0042] The present invention can be used to place the soldering wire in the wire feeding slot 9, and the wire feeding roller 8 can be driven by the driving motor 7 to rotate. When the wire feeding roller 8 rotates, the soldering wire can be driven to move so as to feed the soldering wire into the welding seam. A plurality of soldering wires can be placed at the same time through the plurality of wire feeding slots 9 to realize batch wire feeding without the need for the operator to frequently fill in new soldering wire, thereby greatly improving the overall working efficiency and effectively reducing the workload of the operator. When moving, it can be aligned with and pass through the corresponding guide hole 16 on the wire guide frame 15, and the outlet of the guide hole 16 is aligned with the weld area of flame brazing, so that the solder wire can be guided through each guide hole 16 to ensure that the solder wire can be accurately fed into the weld area of flame brazing, thereby avoiding the flame brazing being not firm enough or the waste of solder wire due to unstable weld quality. By driving the electric telescopic rod 2, the lifting assembly can be driven up and down together with the wire feeding assembly, so that the wire feeding height can be adjusted at any time as needed. At the same time, the wire feeding frame 6 can drive the screw 13 to rotate around the adjustment hole 4, so as to adjust the wire feeding angle at any time as needed. By tightening the nut 14 on the screw 13, the angle of the wire feeding frame 6 can be fixed. The entire adjustment process does not require the relevant components to be disassembled and reinstalled, thereby making the adjustment of the wire feeding process more convenient.

[0043] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An automatic wire feeding mechanism for flame brazing, characterized in that: It comprises a base, a lifting assembly is arranged above the base, and a wire feeding assembly is arranged above the lifting assembly; The lifting assembly includes an electric telescopic rod and a lifting frame. An adjustment hole is opened at the center of the top of the lifting frame, and a fixing plate is fixedly connected to the inner wall of the lifting frame. The electric telescopic rod is installed on the base, and the top end of the output shaft of the electric telescopic rod is fixedly connected to the bottom of the fixing plate. The wire feeding assembly includes a wire feeding frame, a motor is installed on one side of the wire feeding frame, a wire feeding roller is fixedly connected to the output shaft of the motor, a roller body of the wire feeding roller is provided with a plurality of wire feeding grooves, and a wire pressing roller is provided above the wire feeding roller, the wire pressing roller is the same length as the wire feeding roller, a roller body is provided with a plurality of positioning grooves, and an axial hole is provided at the center of the wire pressing roller, a roller shaft is inserted into the axial hole, and both ends of the roller shaft are fixedly connected to the two sides of the wire feeding frame, a screw is fixedly connected to the bottom of the wire feeding frame, the diameter of the screw is equal to the aperture of the adjustment hole, and a nut matching it is threadedly connected to the screw, and the front end face of the wire feeding frame is fixedly connected to a wire guide frame, and a plurality of guide holes are provided on the wire guide frame.

2. The automatic wire feeding mechanism for flame brazing according to claim 1, characterized in that: The wire feeding grooves and the positioning grooves are both arc-shaped, have the same number and the same diameter, and are linearly distributed at equal distances along the length direction of the wire feeding roller and the wire pressing roller respectively.

3. The automatic wire feeding mechanism for flame brazing according to claim 1, characterized in that: The number of the guide holes is the same as the number of the wire feeding slots and the positioning slots, and each of the guide holes is located between the corresponding wire feeding slot and the positioning slot.

4. The automatic wire feeding mechanism for flame brazing according to claim 1, characterized in that: The hole wall of each guide hole is provided with an anti-wear ring.

5. The automatic wire feeding mechanism for flame brazing according to claim 1, characterized in that: Both sides of the lifting frame are L-shaped, and a number of limiting holes are opened on the bottom of both sides of the lifting frame. A number of guide rods are fixedly connected to both sides of the top of the base. The number of the guide rods is the same as the limiting holes, and the rod diameter is equal to the hole diameter of the limiting holes. The center of each guide rod corresponds to the center of each limiting hole.

6. The automatic wire feeding mechanism for flame brazing according to claim 1, characterized in that: A pair of limiting grooves are provided on the top of the lifting frame. The limiting grooves are arc-shaped and symmetrically distributed about the adjustment hole. A pair of limiting rods are fixedly connected to the bottom of the wire feeding frame. The rod diameter of the limiting rods is equal to the groove width of the limiting grooves, and the bottom ends of the limiting rods extend into the corresponding limiting grooves.

7. The automatic wire feeding mechanism for flame brazing according to claim 1, characterized in that: A plurality of reinforcing ribs are fixedly connected to both sides of the top of the fixing plate. The reinforcing ribs are X-shaped, and the tops thereof are fixedly connected to the top inner wall of the lifting frame. The reinforcing ribs are equidistantly linearly distributed along the length direction of the fixing plate.

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