Wire feeding mechanism transmission device, wire feeding mechanism and industrial robot

Abstract

The utility model further provides a wire feeding mechanism transmission device, a wire feeding mechanism and an industrial robot, and the wire feeding mechanism transmission device comprises a motor and a transmission gear. The motor is provided with a transmission shaft, a mounting part is arranged at the tail end of the transmission shaft, the mounting part is provided with a rough surface, and the transmission gear is arranged on the mounting part of the transmission shaft in a sleeving mode and adheres to the rough surface of the mounting part. The transmission gear movably sleeves the transmission shaft of the motor and is bonded and fixed by adopting an adhesive, so that the assembly is convenient; and a rough connecting part is also arranged, so that better bonding force can be conveniently provided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of industrial robot equipment, and particularly relates to a wire feeding mechanism transmission device, a wire feeding mechanism and an industrial robot. BACKGROUND

[0002] Industrial robots have been widely applied in the field of welding, wherein a welding robot mainly comprises a robot body and a welding device, and a wire feeder is an important component of the welding device. The wire feeder is used to accurately and continuously feed welding wire into a welding torch to ensure the stability and efficiency of the welding process. The wire feeder mainly comprises a motor and a wire feeding assembly, and the motor is used to provide power to rotate the wire feeding assembly to feed the welding wire. The motor is connected with a transmission gear at the end, and the transmission mode adopts interference fit connection, for example, the transmission gear is heated and then is sleeved on the output shaft of the motor in a hot mounting mode. The installation scheme uses more tool accessories, and the overall assembly process has high requirements. In addition, the installation matching requirements of the output shaft and the transmission gear are relatively high. If the installation hole diameter of the transmission gear is too small, the internal stress will increase, and if the installation hole diameter is too large, the connection stability will decrease. SUMMARY

[0003] Therefore, the utility model aims to provide a wire feeding mechanism transmission device, a wire feeding mechanism and an industrial robot, which adopts a bonding mode to replace the transmission interference fit transmission gear connection mode, and is easier to assemble and has relatively low requirements on the gear installation hole diameter precision.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] In a first aspect, a wire feeding mechanism transmission device is provided, comprising a motor and a transmission gear. The motor is provided with a transmission shaft, the end of the transmission shaft is provided with a mounting portion, the mounting portion is provided with a rough surface, and the transmission gear is sleeved on the mounting portion of the transmission shaft and is bonded with the rough surface of the mounting portion.

[0006] In an implementation manner, the transmission shaft comprises a main shaft and a sleeve shaft at the end of the main shaft, and the sleeve shaft is provided with a mounting portion. The main shaft and the sleeve shaft are an integral structure, or the main shaft and the sleeve shaft are connected into one body.

[0007] In an implementation manner, the mounting portion is provided with a threaded hole in the axial direction, and is also provided with a screw. The screw is threadedly connected to the threaded hole, and the screw nut radius is greater than the center hole radius of the transmission gear.

[0008] In an implementation manner, the form of the rough surface of the mounting portion includes but is not limited to threads, tooth shapes, grids and dot-shaped protrusions.

[0009] A kind of implementation, still be provided with connecting component, the connecting component includes first connecting component and second connecting component, the first connecting component is used to connect wire feeding mechanism main body, the second connecting component is used to connect motor;The transmission gear passes through first connecting component and second connecting component and the driven gear tooth of wire feeding mechanism main body is toothed, for driving wire feeding mechanism work;

[0010] The motor, transmission gear and second connecting component form a movable whole, the second connecting component position adjustable installation is on first connecting component, for adjusting transmission gear transmission gap.

[0011] A kind of implementation, the second connecting component is provided with waist type hole, is equipped with the screw for fixing, screw passes through waist type hole and is connected with the matching screw hole of first connecting component Fixed.

[0012] A kind of implementation, the first connecting component is equipped with adjusting hole, the inner surface of adjusting hole is screw thread, and is also equipped with adjusting screw matched with adjusting hole.

[0013] Second aspect, provide a wire feeding mechanism, including wire feeding mechanism main body and the wire feeding mechanism transmission device of any one of the above, the first connecting component is connected with wire feeding mechanism main body, and the transmission gear is toothed with the driven gear tooth in wire feeding mechanism main body.

[0014] Third aspect, provide an industrial robot, the industrial robot body is installed with the above-mentioned wire feeding mechanism.

[0015] Compared with prior art, the utility model has following beneficial effects:

[0016] I, the utility model provides novel wire feeding machine motor and transmission gear's connecting mode, transmission gear is movably sleeved on the transmission shaft of motor, is fixed by adopting adhesive, compared with prior art adopts the mode of interference fit, and this method is more convenient to assemble;And still be provided with rough connecting part, it is convenient to provide better adhesive force.Compared with interference fit, internal stress is smaller, and it is favorable to improve the service life of gear.

[0017] II, the utility model also provides motor installation position adjustment setting, by setting structure such as waist type hole, so that motor installation position is movable, when transmission gear meshing gap is adjusted to work requirement, fasten motor so that transmission gear meshing is closely. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 it is the schematic diagram of wire feeding mechanism transmission device in first visual angle for wire feeding mechanism transmission device;

[0019] Figure 2 it is the schematic diagram of wire feeding mechanism transmission device in second visual angle for wire feeding mechanism transmission device;

[0020] Figure 3 Figure is a schematic diagram of the transmission gear and transmission shaft connection;

[0021] Figure 4 Figure is a schematic diagram of the connecting assembly;

[0022] Figure 5 Figure is a schematic diagram of the wire feeding mechanism;

[0023] Figure 6 Figure is a schematic diagram of the traditional wire feeding mechanism.

[0024] In the figure: motor 1, transmission shaft 2, main shaft 21, sleeve shaft 22, mounting part 23, transmission gear 3, threaded hole 4, screw 5, first connecting assembly 6, adjusting hole 61, adjusting screw 62, second connecting assembly 7, waist-shaped hole 71, wire feeding mechanism main body 8. DETAILED DESCRIPTION

[0025] In order to make the technical personnel in the art better understand the technical scheme of the utility model, the utility model will be further described in detail below in combination with specific embodiments.

[0026] The existing wire feeder or wire feeding mechanism for welding industrial robot, the motor 1 and the shell of the wire feeder body are fixedly installed in direct connection, such as mature connection mode of bolt; wherein the transmission shaft 2 of the motor 1 is connected with the transmission gear 3, both are connected by interference fit, then passes through the shell of the wire feeder body into the inside, and is connected with the driven gear inside, then the motor 1 can drive the driven gear to rotate when working, further drive the wire feeding wheel in the wire feeding mechanism to rotate, realize the conveying of welding wire. The interference fit installation mode such as hot assembly, a specific way is that the transmission gear 3 is sleeved on the transmission shaft 2 of the motor 1 after heating, there are many tools and procedures and operation points of the need of hot assembly.

[0027] With reference to the drawings, compared with the existing product, the application provides a new transmission device of a wire feeding mechanism, adopts a new connection mode, and specifically comprises a motor 1 and a transmission gear 3. The motor 1 is provided with a transmission shaft 2 and a rotating shaft of the motor 1. The transmission shaft 2 is provided at the end with a mounting portion 23. The mounting portion 23 is provided with a rough surface. The transmission gear 3 is sleeved on the mounting portion 23 of the transmission shaft 2 and is bonded with the rough surface of the mounting portion 23. The transmission gear 3 and the mounting portion 23 of the transmission shaft 2 can be kept in clearance fit. The bonding agent can be selected as any suitable product, for example, a commercially available bonding agent. The bonding agent can be selected according to the experimental selection of multiple products or the use range of the instruction manual of the bonding agent. The bonding agent meets the connection stability and reliability of the transmission gear 3 of the wire feeding mechanism of the industrial robot. The specific use mode of the bonding agent can be used with reference to the instruction manual. One optional mode is to apply the bonding agent on the rough surface and the inner surface of the hole of the transmission gear 3. Compared with the traditional mode, the new mode is applied to the gear of this type, which is generally small and mostly prepared by powder metallurgy. The scheme can reduce the effect of stress and play a role in protecting the gear. Meanwhile, the method is simpler and does not require professional tools. The size requirement of the motor 1 connecting shaft or the mounting portion 23 is more extensive.

[0028] In a specific embodiment, the transmission shaft 2 comprises two parts, a main shaft 21 of a front section and a sleeve shaft 22 located at the end of the main shaft 21. The sleeve shaft 22 is provided with a mounting portion 23, and the transmission gear 3 is connected with the sleeve shaft 22. The main shaft 21 and the sleeve shaft 22 are an integral structure, for example, prepared by integral molding. Alternatively, the main shaft 21 and the sleeve shaft 22 can be connected in an integral structure by matching the applicable modes such as a pin shaft, a spline, a screw 5, etc., while the coaxiality meets the rotation requirement. The transmission shaft 2 of the split structure can extend the length of the transmission shaft 2 by adding the sleeve shaft 22 on the basis of the standard transmission length of the motor 1, so as to realize the transmission connection assembly under specific working conditions or achieve other specific transmission requirements, such as the consideration of rotational inertia.

[0029] In a specific embodiment, the mounting portion 23 is provided with a threaded hole 4 in the axial direction, and is further provided with a screw 5. The screw 5 is threadedly connected to the threaded hole 4. The screw cap radius of the screw 5 is greater than the center hole radius of the transmission gear 3. By setting the screw 5 at the end, the transmission gear 3 is axially limited, and the connection stability of the transmission gear 3 and the transmission shaft 2 is further improved. The fixing and limiting of the other end can prevent the gear from moving inward by increasing the radius size, so as to achieve the purposes of auxiliary positioning and installation and axial limiting.

[0030] A specific embodiment, the form of the rough surface of the mounting portion 23 includes but is not limited to threads, teeth, grid, point-like protrusions, other forms of rough surface can also be used, the purpose is to increase the anchoring point when the adhesive is adhered, this application gives a schematic diagram of the rough surface with tooth-shaped structure.

[0031] A specific embodiment, compared with the existing installation method with only one fixed installation position, the application is indirectly connected and fixed by connecting assembly between the motor 1 and the wire feeding mechanism body shell. The connecting assembly includes a first connecting assembly 6 and a second connecting assembly 7, and the first connecting assembly 6 and the second connecting assembly 7 are respectively provided with a plurality of threaded holes 4 for mounting the wire feeding mechanism body 8 and the motor 1, wherein the first connecting assembly 6 is used to connect the wire feeding mechanism body 8, and the second connecting assembly 7 is used to connect the motor 1, and they can be tightly connected by the matched screws 5. The wire feeding mechanism body 8 can be selected from any product sold on the market, and a driven gear matched with the transmission gear 3 is installed inside. The first connecting assembly 6, the second connecting assembly 7 and the wire feeding mechanism body 8 shell are all provided with through holes for the transmission gear 3 to pass through, and after the transmission gear 3 and the driven gear are connected, the power of the motor 1 is transmitted to the wire feeding wheel of the wire feeding mechanism, so as to realize the purpose of driving the wire feeding mechanism to feed the wire.

[0032] The motor 1, the transmission gear 3 and the second connecting assembly 7 form an active whole, and the second connecting assembly 7 is adjustably installed on the first connecting assembly 6, that is, the whole has a plurality of installation positions relative to the first connecting assembly 6, which is used to adjust the transmission gap of the transmission gear 3. Different installation positions make the transmission gap of the transmission gear 3 and the driven gear different, and after the appropriate installation position is found, the first connecting assembly 6 and the second connecting assembly 7 are fastened. The indirect connection through the connecting assembly can realize the adjustment of the transmission gap, so that the performance of the wire feeding machine is better, the output toothed surface is increased, and the adverse effects such as jamming are avoided or prevented, and the influence of the long-term used wire feeding machine caused by factors such as wear is corrected.

[0033] A specific embodiment, the second connecting assembly 7 is provided with a waist-shaped hole 71, and a screw 5 for fixing is arranged, and the screw 5 passes through the waist-shaped hole 71 and is connected and fixed with the matched threaded hole 4 of the first connecting assembly 6. Specifically, since the waist-shaped hole 71 is designed, the hole is larger than the screw 5, and the screw 5 can move within the hole range, first fasten the motor 1 and the second connecting assembly 7 by the screw 5 and the like, and then after the installation position of the second connecting assembly 7 and the first connecting assembly 6 is adjusted, that is, the screw 5 passing through the waist-shaped hole 71 is fastened after being moved to the appropriate position of the waist-shaped hole 71.

[0034] A specific embodiment also provides a way to adjust the position of the second connecting assembly 7, by providing an adjusting hole 61 on the first connecting assembly 6, the inner surface of the adjusting hole 61 is threaded, and an adjusting screw 62 is provided to match the adjusting hole 61, the adjusting screw 62 abuts against the second connecting assembly 7, first pre-tighten and fix the first connecting assembly 6 and the second connecting assembly 7, since the adjusting screw 62 is screwed with the adjusting hole 61, rotating the adjusting screw 62 can move in the axial direction of the adjusting hole 61. The adjusting screw 62 abuts against the second connecting assembly 7, and can push the second connecting assembly 7 to move in the length direction of the waist-shaped hole 71, since the two are pre-tightened and fixed, the movement of the second connecting assembly 7 is not affected, when the adjusting screw 62 is rotated to the appropriate position, the transmission gear 3 and the driven gear reach the required clearance, stop rotating the adjusting screw 62, further tighten the first connecting assembly 6 and the second connecting assembly 7, so as to realize the position adjustment of the transmission gear 3 connected to the motor 1. As a preferred, the advancing direction of the adjusting screw 62 is parallel to the length direction of the waist-shaped hole 71, which is convenient for the position adjustment of the second connecting assembly 7. The schematic diagram of the adjusting screw 62 is not shown in the drawings of the present application, and an appropriate screw can be selected, such as a bolt without a nut. The present application provides a setting position of the waist-shaped hole 71, which is provided at the four corners of the second connecting assembly 7.

[0035] A wire feeding mechanism is also provided, as shown in Figure 5 The first connecting assembly 6 is connected with the wire feeding mechanism body 8, and the transmission gear 3 is in gear connection with the driven gear in the wire feeding mechanism body 8.

[0036] An industrial robot is also provided, and the industrial robot body is provided with the above-mentioned wire feeding mechanism. The industrial robot is not shown in the drawings, and the installation of the wire feeding mechanism and the industrial robot is not shown. The installation of the wire feeding mechanism on any existing industrial robot for welding can be referred to, and any used industrial robot for welding, including the related products of the applicant, can be matched.

[0037] The connection of each component or structure of the present application is not explicitly shown in the drawings, and can be connected by the connection method in the art. The present application does not limit the use of prior art if it is not explicitly stated. As shown in the drawings, a plurality of mounting holes and screw 5 installation methods are provided, and the mounting screw 5 is not completely shown in the drawings. The use of mounting holes and screws 5 can be set by technicians according to the actual situation of the scheme or product.

[0038] The above are only preferred embodiments of the present application, and it should be pointed out that the above preferred embodiments should not be regarded as a limitation to the present application, and the protection scope of the present application should be subject to the range defined by the claims. For ordinary skilled in the art, some improvements and refinements can be made without departing from the spirit and scope of the present application, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. A wire feeder drive, comprising: The motor is provided with a transmission shaft, the end of the transmission shaft is provided with a mounting part, the mounting part is provided with a rough surface, the transmission gear is sleeved on the mounting part of the transmission shaft and is bonded with the rough surface of the mounting part.

2. The wire feeder drive of claim 1, wherein, The transmission shaft comprises a main shaft and a sleeve shaft at the end of the main shaft, and the sleeve shaft is provided with a mounting part; the main shaft and the sleeve shaft are an integral structure; or the main shaft and the sleeve shaft are connected into an integral structure.

3. The wire feeder drive of claim 1, wherein, The mounting part is provided with a threaded hole in the axial direction, and is also provided with a screw, the screw is threadedly connected to the threaded hole, and the screw nut radius is greater than the center hole radius of the transmission gear.

4. The wire feeder drive of claim 1, wherein, The form of the rough surface of the mounting part comprises threads, teeth, grid, and dot-shaped protrusions.

5. The wire feeder drive of claim 1, wherein, A connecting assembly is further provided, which comprises a first connecting assembly and a second connecting assembly, the first connecting assembly is used for connecting the wire feeding mechanism body, and the second connecting assembly is used for connecting the motor; the transmission gear is toothed with the driven gear of the wire feeding mechanism body through the first connecting assembly and the second connecting assembly, and is used for driving the wire feeding mechanism to work. The motor, the transmission gear and the second connecting assembly form a movable whole, the second connecting assembly is adjustably installed on the first connecting assembly, and is used for adjusting the transmission gap of the transmission gear.

6. The wire feeder drive of claim 5, wherein, The second connecting assembly is provided with a waist-shaped hole and a fixing screw, and the screw is connected and fixed with a matching threaded hole provided on the first connecting assembly through the waist-shaped hole.

7. The wire feeder drive of claim 5, wherein, The first connecting assembly is provided with an adjusting hole, the inner surface of the adjusting hole is in a threaded form, and is also provided with an adjusting screw matched with the adjusting hole.

8. A wire feeder, comprising: The first connecting assembly is connected with the wire feeding mechanism body, and the transmission gear is toothed with the driven gear in the wire feeding mechanism body.

9. An industrial robot, characterized in that, The wire feeding mechanism is connected with the industrial robot body.

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