Trundle positioning and welding device

Abstract

The utility model discloses a trundle positioning and welding device, and relates to the technical field of split hub assembly, the trundle positioning and welding device comprises a welding assembly, a rotation driving part and a first translation seat capable of axially approaching relative to the rotation driving part, and the output end of the rotation driving part is inwards provided with a second limiting rod; a second limiting rod is rotatably arranged on the end portion of the first horizontal moving seat, a first limiting rod coaxial with the second limiting rod is rotatably arranged on the end portion of the first horizontal moving seat, and the welding end of the welding assembly points to the joint of the hub and the bearing after the hub is clamped, and has the technical advantages that the first limiting rod and the second limiting rod are controlled to get close in the axial direction through the first horizontal pushing assembly, and the hub is positioned from the inner side of the bearing; the hub and the bearing can achieve the precise circumferential welding effect after being positioned by rotating the driving piece; the angle of the welding gun can be adjusted, so that the welding gun can avoid a hub in the positioning process and can also be matched with welding of trundles of different sizes; and a contact type rotating speed sensor is adopted, so that the rotating speed and the number of turns during circumferential welding can be monitored in real time.

Description

Technical Field

[0001] The present application relates to the technical field of split wheel hub assembly equipment, and in particular to a caster positioning welding device. Background Art

[0002] The main feature of the caster with a split hub is that the hub part is composed of two independent half hubs, which can be easily assembled and disassembled. Compared with the traditional integrated hub, the advantage of the split hub is convenient installation and maintenance; the integrated hub is realized by sand casting process, which can only produce one casting at a time, and the casting mold cannot be reused after the casting is cooled and taken out due to the characteristics of the sand material, and a new casting mold needs to be made again, which leads to relatively low production efficiency of the single hub; the split hub design abandons the traditional integrated casting idea and adopts a modular design concept, dividing the hub into multiple parts that can be manufactured and assembled independently. This design allows each part to be mass-produced during the production process, and the interchangeability between parts is greatly improved, which not only simplifies the production process, but also greatly improves production efficiency.

[0003] During the assembly process of the split wheel hub, after the split wheel hub is assembled into a whole, it is necessary to weld the wheel hub and the bearing; since the components of the caster show diversity and flexibility in size, such as the differentiated design of width and diameter, the existing manual welding method is inefficient and has large welding errors, which puts higher requirements on the automated welding technology. However, a lot of time is still required for manual adjustment and positioning before automated welding, and it is still difficult to ensure the consistency and stability of the welding quality; how to design and implement a set of split wheel hub automated welding that can adapt to different widths and diameters and achieve precise positioning before welding has become a related technical problem that technical personnel in this field urgently need to solve. Utility Model Content

[0004] This device provides a caster positioning welding device, and the specific implementation method is as follows:

[0005] A caster positioning welding device, comprising:

[0006] A rotary drive member and a first translation seat that can be axially approached relative to the rotary drive member, a second limiting rod is provided inwardly at the output end of the rotary drive member, and a first limiting rod coaxial with the second limiting rod is rotatably provided at the end of the first translation seat, and axial clamping of the wheel hub and the two sides of the bearing after assembly is achieved by axially approaching the two limiting rods;

[0007] The welding assembly connected to the second push assembly has its welding end pointing to the junction between the wheel hub and the bearing after the wheel hub is clamped, and the wheel hub and the bearing are driven to rotate by the rotating driving member to achieve circumferential welding.

[0008] Based on the above technical solution, the axial positioning of the split wheel hub and the bearing is achieved by setting a coaxial second limit rod and a first limit rod, which not only ensures the close fit of the welding parts and improves the welding quality, but also greatly improves the automation level and work efficiency of the entire wheel hub and bearing welding process.

[0009] Preferably, the first limit rod and the second limit rod have the same structure and are arranged in opposite directions; taking the second limit rod as an example, its end is provided with an annular groove for the inner side of the bearing to engage and position, and its end face is provided with an annular chamfer that is conducive to the bearing being engaged.

[0010] Preferably, it further comprises a base and a first horizontal push assembly arranged on the base, the first horizontal push assembly is connected to the first translation seat, and a rotation driving member and a second horizontal push assembly are also installed on the base.

[0011] Preferably, the first push assembly includes a suspended plate arranged outside the base, a first cylinder is mounted on the suspended plate, a first guide rail slidably connected to the first translation seat is provided on the base, and an air arm of the first cylinder is connected to the first translation seat.

[0012] Preferably, the rotary drive member includes a vertically arranged raising platform and a motor, the output end of the motor is connected to the second limiting rod, and the raising platform is fixedly connected to the base.

[0013] Based on the above technical solution, the first limit rod and the second limit rod are precisely controlled to approach each other along the axial direction through the first push assembly, and the two limit rods fit the wheel hub from the inner side of the bearing to achieve precise positioning of the wheel hub. This positioning method ensures the absolute alignment between the wheel hub and the bearing, laying the foundation for subsequent welding operations; through the operation of the rotating drive member, the first limit rod and the second limit rod can achieve synchronous rotation while maintaining the positioning of the wheel hub, so that the wheel hub and the bearing can move relative to each other along the circumferential direction on the basis of being axially fixed, thereby achieving a circumferential welding effect during the rotation process.

[0014] Preferably, the second push assembly includes a base plate, a top of which is provided with a second guide rail and a second cylinder along the length direction, and an air arm of the second cylinder is connected to the welding assembly.

[0015] Preferably, the welding assembly comprises a second translation seat connected to the air arm end of the second cylinder, and a welding gun with a vertically adjustable angle is hinged on the top of the second translation seat.

[0016] Based on the above technical scheme, in order to improve welding efficiency and adapt to the welding requirements of casters of different specifications, the position and posture of the welding assembly in three-dimensional space can be flexibly controlled through the second push assembly, so that it can approach or move away according to the actual structure of the wheel hub and the bearing and the change of the welding position; the welding assembly carried by the second push assembly can ensure the smooth progress of the welding operation without affecting the positioning and assembly process of the wheel hub; the adjustability of the welding gun angle gives the system extremely high flexibility, so that it can be accurately adapted to split wheels of different diameters and widths, and the welding gun can be accurately aimed at the welding part regardless of how the caster size changes; the welding gun and the second translation seat are conventionally rotated together, and in order to keep the angle between the welding gun and the second translation seat fixed during welding, a corresponding pin hole can be set to fix the angle of the welding gun.

[0017] Preferably, the raising platform, the vertical baffle plate and the first translation seat are all connected to the base by bolts; the raising platform and the first translation seat are provided with outwardly open positioning slots on both sides along their width direction, and the vertical baffle plate is provided with outwardly open positioning slots on the side along the length direction of the raising platform, and the bolts are passed through each positioning slot and then threadedly connected to the base.

[0018] Based on the above technical solution, by adjusting the positions of the raising platform and the first translation seat in the positioning slot, it is possible to flexibly adapt to wheel hub assemblies of different specifications and heights, ensuring that the two limit rods can be accurately aligned and positioned before welding; secondly, through the open positioning slot, the position of the vertical baffle can be conveniently moved and adjusted, so that the depth of the wheel hub and the bearing inserted into the annular groove can be accurately controlled according to the specific structure and size of the wheel hub, ensuring that the contact area and tightness between the wheel hub and the bearing are in the optimal state, which is crucial to improving welding quality and stability.

[0019] Preferably, a vertical baffle is provided on the base, and the top height of the vertical baffle is higher than the height of the low end of the hub.

[0020] Preferably, it further comprises a rotation speed sensor which is arranged on the top of the rotating driving member via an L-shaped positioning seat, and a detection end of the rotation speed sensor abuts against the circumferential surface of the second limiting rod.

[0021] Based on the above technical solution, in order to ensure precise control and stable quality of the welding process, a contact-type speed sensor is used. This sensor is in contact with the second limit rod and can monitor and accurately measure the speed of the hub during circumferential welding and the accumulated number of rotations in real time. Through the precise control of the speed sensor, the system can automatically adjust the operating status of the welding equipment according to the preset welding process parameters, such as welding speed, weld width and the required number of welding circles, to ensure the precise matching of speed and position during the welding process, and effectively prevent quality problems caused by welding too fast or too slow, such as too thin weld, insufficient penetration or burn-through.

[0022] In summary, this application includes the following beneficial technical effects:

[0023] 1. The utility model controls the first limit rod and the second limit rod to approach axially through the first push assembly and positions the wheel hub from the inner side of the bearing, and the rotating driving member drives the first limit rod and the second limit rod to rotate synchronously, so that the wheel hub and the bearing can achieve accurate circumferential welding effect after positioning;

[0024] 2. In the utility model, a welding assembly that can approach and stay away from the welding position of the wheel hub and the bearing is arranged through the second push assembly, and the angle of the welding gun is adjustable, so that the welding gun can avoid the wheel hub positioning process and can also adapt to the welding of casters of different sizes;

[0025] 3. The utility model has a simple structure. In order to ensure accurate control and stable quality of the welding process, a contact speed sensor is adopted. This sensor is in contact with the second limit rod and can monitor and accurately measure the speed of the wheel hub during circumferential welding and the accumulated number of rotations in real time;

[0026] 4. The utility model can adjust the position of the heightening platform and the first translation seat through the open positioning slot, and can also adjust the position of the vertical baffle on the wheel hub, so that the depth of the wheel hub and the bearing inserted into the annular groove can be controlled. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of a split wheel hub;

[0028] Figure 2 This is a schematic diagram of the structure of the utility model Figure 1 ;

[0029] Figure 3 This is a schematic diagram of the structure of the utility model Figure 2 ;

[0030] Figure 4 It is an enlarged view of the local structure of the utility model;

[0031] Figure 5 It is a schematic diagram of the front view structure of the utility model;

[0032] Figure 6 It is a schematic diagram of the utility model when the wheel hub is clamped;

[0033] Figure 7 It is a structural schematic diagram of the second push assembly and the welding assembly in the utility model;

[0034] Figure 8 It is a structural schematic diagram of the second limiting rod and the rotating driving member in the utility model.

[0035] Description of reference numerals:

[0036] 1. Base, 2. First horizontal push assembly, 3. First translation seat, 4. First limit rod, 5. Second limit rod, 6. Rotation drive member, 7. Second horizontal push assembly, 8. Welding assembly, 9. Vertical baffle, 10. Wheel hub, 11. Bearing, 12. Bolt, 13. L-shaped positioning seat, 14. Speed ​​sensor, 15. Positioning slot,

[0037] 201, suspended plate, 202, first guide rail, 203, first cylinder, 501, annular groove, 502, annular chamfer, 601, raising platform, 602, motor, 701, bottom plate, 702, second guide rail, 703, second cylinder, 801, second translation seat, 802, welding gun. DETAILED DESCRIPTION

[0038] The following describes the specific implementation of the utility model in conjunction with the accompanying drawings and embodiments:

[0039] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them, and are not used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0040] At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of description and are not used to limit the scope of the implementation of the present utility model. Changes or adjustments to their relative relationships should be regarded as the scope of the implementation of the present utility model without substantially changing the technical content.

[0041] The following is combined with Figure 1-8 This application is described in further detail.

[0042] The embodiment of the present application discloses a caster positioning welding device.

[0043] Example 1

[0044] Reference Figures 1 to 8The present embodiment discloses a caster positioning welding device, comprising a base and a first push assembly 2 arranged on the base, a rotating driving member 6 and a first translation seat 3 that can be axially approached relative to the rotating driving member 6, a second push assembly 7 and a welding assembly 8 connected to the second push assembly 7, the output end of the rotating driving member 6 is provided with a second limit rod 5 inwardly, the end of the first translation seat 3 is rotatably provided with a first limit rod 4 coaxial with the second limit rod 5, the welding end of the welding assembly 8 points to the junction between the wheel hub 10 and the bearing 11 after the wheel hub 10 is clamped, the rotating driving member 6 drives the wheel hub 10 and the bearing 11 to rotate to achieve circumferential welding, and the axial clamping of the two sides of the wheel hub 10 and the bearing 11 after assembly is achieved by axially approaching the two limit rods. In the present structure, the first push assembly 2 is connected to the first translation seat 3, and the rotating driving member 6 and the second push assembly 7 are also installed on the base 1.

[0045] The first limiting rod 4 and the second limiting rod 5 have the same structure and are arranged in opposite directions. Taking the second limiting rod 5 as an example, its end is provided with an annular groove 501 for the inner side of the bearing 11 to engage and position, and its end face is provided with an annular chamfer 502 which is conducive to the bearing being inserted. In this structure, the annular chamfer 502 is in an expanded diameter shape, which can facilitate the accurate insertion of the bearing 11.

[0046] The second push assembly 7 includes a bottom plate 701, on the top of which a second guide rail 702 and a second cylinder 703 are respectively provided along the length direction, the gas arm of the second cylinder 703 is connected to the rotating drive member 6, the welding assembly 8 includes a second translation seat 801 connected to the gas arm end of the second cylinder 703, and the top of the second translation seat 801 is hinged with an angle-adjustable welding gun 802, the first push assembly 2 includes a suspended plate 201 arranged outside the base, the suspended plate 201 is mounted with a first cylinder 203, the base 1 is provided with a first guide rail 202 slidably connected to the first translation seat 3, and the gas arm of the first cylinder 203 is connected to the first translation seat 3, the rotating drive member 6 includes a vertically arranged raising platform 601 and a motor 602, the output end of the motor 602 is connected to the second limiting rod 5, and the raising platform 601 is fixedly connected to the base 1, as shown in FIG. Figure 1 As shown, in this structure, there are four arrangements of the welding assembly 8 and the first push assembly 2, and any one of them can be selected.

[0047] The specific implementation process is as follows: the split wheel hub is formed by merging and splicing two-piece wheel hubs 10, and a central through hole for installing the bearing 11 is opened in the center of the two; after the three are assembled, they are clamped at the end of the first limit rod 4; the first push assembly 2 pushes out the first limit rod 4, so that the first limit rod 4 and the second limit rod 5 are respectively clamped at the two ends of the bearing 11; the second push assembly 7 pushes the welding assembly 8 into the welding position, at this time, the head of the welding gun 802 corresponds to a point at the junction of the bearing 11 and the wheel hub 10; the rotating drive 6 controls the wheel hub 10, the bearing 11, the first limit rod 4 and the second limit rod 5 to rotate synchronously, and the circumferential welding of the bearing 11 is realized under the action of the welding gun 802.

[0048] Example 2

[0049] Reference Figure 3 and Figure 4 , and based on Example 1, this embodiment also provides a caster positioning welding device, which also includes a speed sensor 14 arranged on the top of the rotating drive member 6 through an L-shaped positioning seat 13, and the detection end of the speed sensor 14 abuts against the circumferential surface of the second limit rod 5.

[0050] Example 3

[0051] Reference Figure 5 and Figure 6 , and based on Example 1, this embodiment further provides a caster positioning welding device, a vertical baffle plate 9 is provided on the base 1, the top height of the vertical baffle plate 9 is higher than the low end height of the wheel hub 10, the raising platform 601, the vertical baffle plate 9 and the first translation seat 3 are all connected to the base 1 by bolts 12, and the raising platform 601 and the first translation seat 3 in this structure are provided with outwardly open positioning slots 15 on both sides along their width direction, and the vertical baffle plate 9 is provided with outwardly open positioning slots 15 on the side along the length direction of the raising platform 601, and the bolts 12 are passed through each positioning slot 15 and then threadedly connected with the base 1, and the corresponding relationship between the vertical baffle plate 9 and the annular groove 501 is adjusted along the direction of the second limit rod 5 by changing the positional relationship between the bolt 12 and the positioning slot 15 at the bottom of the vertical baffle plate 9.

[0052] Many other changes and modifications can be made without departing from the concept and scope of the utility model. It should be understood that the utility model is not limited to a specific embodiment, and the scope of the utility model is defined by the appended claims.

Claims

1. A caster positioning welding device, characterized in that: include: A rotary drive member (6) and a first translation seat (3) that can be axially approached relative to the rotary drive member (6), a second limiting rod (5) is provided inwardly at the output end of the rotary drive member (6), and a first limiting rod (4) coaxial with the second limiting rod (5) is rotatably provided at the end of the first translation seat (3), and axial clamping of both sides of the wheel hub (10) and the bearing (11) after assembly is achieved by axially approaching the two limiting rods; A welding assembly (8) connected to the second thrust assembly (7), wherein the welding end of the welding assembly (8) points to the junction between the wheel hub (10) and the bearing (11) after the wheel hub (10) is clamped, and the wheel hub (10) and the bearing (11) are driven to rotate by the rotating drive member (6) to achieve circumferential welding.

2. A caster positioning welding device according to claim 1, characterized in that: The first limiting rod (4) and the second limiting rod (5) have the same structure and are arranged in opposite directions; Taking the second limiting rod (5) as an example, its end is provided with an annular groove (501) for engaging and positioning the inner side of the bearing (11), and its end surface is provided with an annular chamfer (502) that facilitates the engagement of the bearing (11).

3. A caster positioning welding device according to claim 2, characterized in that: It also comprises a base (1) and a first horizontal push assembly (2) arranged on the base (1), wherein the first horizontal push assembly (2) is connected to the first translation seat (3), and the base (1) is also equipped with the rotating drive member (6) and the second horizontal push assembly (7).

4. A caster positioning welding device according to claim 3, characterized in that: The second push assembly (7) comprises a bottom plate (701), the top of which is provided with a second guide rail (702) and a second cylinder (703) along the length direction, and the air arm of the second cylinder (703) is connected to the welding assembly (8).

5. A caster positioning welding device according to claim 4, characterized in that: The welding assembly (8) comprises a second translation seat (801) connected to the air arm end of the second air cylinder (703), and a welding gun (802) with an adjustable angle is hinged on the top of the second translation seat (801).

6. A caster positioning welding device according to claim 5, characterized in that: The first push assembly (2) comprises a suspended plate (201) arranged outside the base (1), a first cylinder (203) being mounted on the suspended plate (201), a first guide rail (202) being slidably connected to the first translation seat (3) being provided on the base (1), and an air arm end of the first cylinder (203) is connected to the first translation seat (3).

7. A caster positioning welding device according to claim 6, characterized in that: A vertical baffle (9) is provided on the base (1), and the top height of the vertical baffle (9) is higher than the height of the lower end of the wheel hub (10).

8. A caster positioning welding device according to claim 7, characterized in that: The rotary drive member (6) comprises a vertically arranged raising platform (601) and a motor (602), the output end of the motor (602) being connected to the second limiting rod (5), and the raising platform (601) being fixedly connected to the base (1).

9. A caster positioning welding device according to claim 8, characterized in that: The height-enhancing platform (601), the vertical baffle (9) and the first translation seat (3) are all connected to the base (1) via bolts (12); The raising platform (601) and the first translation seat (3) are provided with outwardly open positioning slots (15) on both sides along the width direction thereof, and the vertical baffle (9) is provided with outwardly open positioning slots (15) on the side along the length direction of the raising platform (601), and the bolts (12) are threadedly connected to the base (1) after passing through each of the positioning slots (15).

10. A caster positioning welding device according to claim 9, characterized in that: It also includes a rotation speed sensor (14) arranged on the top of the rotating drive member (6) through an L-shaped positioning seat (13), and the detection end of the rotation speed sensor (14) abuts against the circumferential surface of the second limiting rod (5).

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