Automatic hub assembling device and trundle hub

Abstract

The utility model provides an automatic hub assembling device and a trundle hub, the device comprises: an upper pressing die, the upper pressing die is provided with a first annular accommodating groove, the first annular accommodating groove is used for accommodating a first half hub to be assembled; the downward pressing mold is provided with a second annular containing groove, and the second annular containing groove is used for containing a second half hub to be assembled; when the upper pressing mold and the lower pressing mold are pressed, the first to-be-assembled hub half is located in the first annular containing groove, the second to-be-assembled hub half is located in the second annular containing groove, and the first to-be-assembled hub half and the second to-be-assembled hub half are mutually pressed and assembled into a whole. The device is simple in structure, half hubs to be assembled can be assembled only through press fit, and assembling is easy and convenient.

Description

Technical Field

[0001] This disclosure relates to the field of caster hub technology, and more particularly to an automatic hub assembly device and a caster hub. Background Technology

[0002] A caster (or caster wheel) is a component installed on the bottom of equipment to enable its easy movement. Casters have a wide range of applications, and the caster hub is an important part of the corresponding equipment. The caster hub is the core part of the wheel, responsible for supporting and fixing the wheel, and cooperating with the bearing to ensure that the wheel can rotate smoothly.

[0003] Currently, there are various types of wheel hubs on the market, and correspondingly, many types of wheel hub forging molds. For two-piece or multi-piece wheel hubs, an assembly process is required after forging. Traditional assembly processes use bolts or welding to connect the parts, which is time-consuming, labor-intensive, and yields poor results. A new type of wheel hub and assembly tool is needed to improve the processing effect of wheel hubs. Utility Model Content

[0004] The purpose of this disclosure is to provide an automatic wheel hub assembly device and a caster wheel hub, thereby solving the aforementioned problems existing in the prior art.

[0005] To achieve the above objectives, the technical solutions adopted in the embodiments of this disclosure are as follows:

[0006] This disclosure provides an automatic wheel hub assembly device for assembling caster wheel hubs, the device comprising:

[0007] An upper pressing mold is provided with a first annular receiving groove, which is used to receive a first wheel hub half to be assembled.

[0008] A pressing die, wherein the pressing die is provided with a second annular receiving groove, the second annular receiving groove being used to receive a second wheel hub half to be assembled;

[0009] When the upper pressing mold and the lower pressing mold are pressed together, the first half of the wheel hub to be assembled is located in the first annular receiving groove, and the second half of the wheel hub to be assembled is located in the second annular receiving groove. The first half of the wheel hub to be assembled and the second half of the wheel hub to be assembled are pressed together to form a whole.

[0010] For example, the upper pressing mold includes:

[0011] An upper pressure plate is disposed on a drive plate, the surface of which is opposite to the surface of the lower pressure mold;

[0012] An intermediate ring plate is slidably connected to the upper pressure plate and has an elastic gap with the upper pressure plate. Its inner sidewall is provided with grooves that avoid the ring at intervals, and each groove is provided with a first positioning post.

[0013] The upper pressure plate is disposed in the central area of ​​the intermediate ring plate, and the surface of the upper pressure plate facing the lower pressure mold and the side wall of the intermediate ring plate form a first annular receiving groove.

[0014] For example, the pressing die includes:

[0015] First base plate, the first base plate is disposed on the base;

[0016] The lower pressure plate is slidably connected to the first base plate and has an elastic gap with the first base plate. The lower pressure plate is provided with multiple through grooves in the circumferential direction.

[0017] An annular base plate is disposed on the surface of the lower pressure plate facing the upper pressure mold, and its inner sidewall is provided with grooves spaced apart in a circumferential direction to avoid the inner ring, and each groove is provided with a second positioning post;

[0018] The lower pressure plate is slidably disposed in the central area of ​​the annular base plate, and its bottom surface has an elastic gap with the lower pressure plate. The surface of the lower pressure plate facing the upper pressure mold forms a second annular receiving groove with the inner sidewall of the annular base plate.

[0019] For example, one end of the first positioning post is connected to the pressure plate, and one end of the second positioning post is connected to the first base plate through a through groove;

[0020] The end face of the other end of the first positioning post is lower than the surface of the first annular receiving groove, forming a receiving groove with the corresponding groove to receive the edge of the first wheel hub half to be assembled. The other end of the second positioning post is lower than the surface of the second annular receiving groove, forming a receiving groove with the corresponding groove to receive the edge of the second wheel hub half to be assembled.

[0021] For example, the surfaces between adjacent grooves of the intermediate ring plate and the annular bottom plate are provided with inwardly recessed side grooves, which are used to set the edge of the corresponding wheel hub half to be assembled.

[0022] For example, the central regions of the first annular receiving groove and the second annular receiving groove are provided with axially elongated shaft protrusions, which are respectively used to pass through the shaft openings of the corresponding wheel hub halves to be assembled.

[0023] For example, the first wheel hub half to be assembled is the same as the second wheel hub half to be assembled, the first annular receiving groove is the same as the second annular receiving groove, and the first wheel hub half to be assembled or the second wheel hub half to be assembled includes:

[0024] A cavity with an open opening has a shaft opening in the central region, and a radially outward flange is provided circumferentially at the end of the open sidewall. The flange and the radial width of the sidewall end face form an engaging edge.

[0025] The outer circumferential side of the flange is provided with a plurality of cleaving teeth that extend away from the bottom wall of the cavity at a predetermined distance, and the connection between the cleaving teeth and the flange is an arc-shaped surface.

[0026] For example, the shaft opening is provided with a limiting post protruding axially into the cavity, and the height of the limiting post is the same as the thickness of the side wall.

[0027] For example, when assembling two wheel hub halves, the upper pressure mold rises and separates from the lower pressure mold. The lower pressure plate rises under the action of the elastic element, placing the second wheel hub halves to be assembled into the second annular receiving groove, with the opening facing away from the bottom wall of the second annular receiving groove. The first wheel hub halves to be assembled are placed on the second wheel hub halves to be assembled, with their openings facing each other, and the meshing teeth of the two wheel hub halves to be assembled are staggered. The upper pressure mold moves down, and the first wheel hub halves to be assembled enter the first annular receiving groove. The second wheel hub halves to be assembled are gradually pressed down, causing the lower pressure plate to move downwards until it moves to the bottom and fits against the lower pressure plate, and the first wheel hub halves to be assembled are completely inserted into the first annular receiving groove. The second wheel hub half to be assembled is fully inserted into the second annular receiving groove, the elastic gap disappears, the surface of the first positioning post is flush with the surface of the first annular receiving groove, the surface of the second positioning post is flush with the surface of the second annular receiving groove, the first wheel hub half to be assembled is pressed onto the second wheel hub half to be assembled, that is, the tooth gap between the engagement teeth of the first wheel hub half to be assembled and the two adjacent engagement teeth of the second wheel hub half to be assembled is interference fit, the ends of each engagement tooth are engaged with the flange of the other wheel hub half to be assembled, the engagement edge of the first wheel hub half to be assembled is in contact with the engagement edge of the second wheel hub half to be assembled, and the end faces of the two limiting posts are in contact with each other, thus completing the wheel hub assembly.

[0028] Another aspect of this disclosure provides a caster hub, which includes a hub assembled using the automatic hub assembly device described above; the two hub halves to be assembled include a meshing tooth and a flange, wherein the meshing teeth of the two hub halves to be assembled are interference-fitted with each other, and the end of the meshing tooth of one hub halves to be assembled is engaged with the flange of the other hub halves to be assembled.

[0029] The beneficial effects of the embodiments disclosed herein are:

[0030] This disclosure provides an automatic wheel hub assembly device and a wheel hub. The wheel hub assembly tool has a simple structure and eliminates the need for bolts or welding for two-half wheel hubs with interlocking teeth, making assembly simple and convenient. Attached Figure Description

[0031] Figure 1This is a schematic diagram of the disassembly structure of an automatic wheel hub assembly device according to an embodiment of this disclosure;

[0032] Figure 2 This is a schematic diagram of another disassembled structure of an automatic wheel hub assembly device according to an embodiment of this disclosure;

[0033] Figure 3 This is a cross-sectional view of an automatic wheel hub assembly device according to an embodiment of this disclosure;

[0034] Figure 4 This is a schematic diagram of the structure of a wheel hub half to be assembled by an automatic wheel hub assembly device according to an embodiment of this disclosure;

[0035] Figure 5 This is a schematic diagram of the back structure of a wheel hub half to be assembled using an automatic wheel hub assembly device according to an embodiment of this disclosure;

[0036] Figure 6 This is a schematic diagram of a half-side structure of a wheel hub to be assembled using an automatic wheel hub assembly device according to an embodiment of this disclosure;

[0037] Figure 7 This is a partial structural diagram of the first positioning post and the first wheel hub half to be assembled before pressing together in an embodiment of the present disclosure, which is assembled using an automatic wheel hub assembly device.

[0038] Figure 8 This is a schematic diagram of a wheel hub structure assembled using an automatic wheel hub assembly device according to an embodiment of this disclosure;

[0039] Figure 9 yes Figure 8 Sectional view B-B.

[0040] In the picture,

[0041] 100. Upper pressing mold; 110. First annular receiving groove; 120. Upper pressing plate; 130. Middle annular plate; 140. Upper pressing plate; 150. First positioning post; 200. Lower pressing mold; 210. Second annular receiving groove; 220. First base plate; 230. Lower pressing plate; 240. Annular base plate; 250. Lower pressing plate; 260. Second positioning post; 300. Half of the wheel hub to be assembled; 310. Cavity; 320. Flanged edge; 330. Engaging edge; 340. Engaging tooth; 350. Arc-shaped surface; 360. Limiting post; 370. Shaft opening; 400. Side groove; 500. Wheel hub. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the embodiments of this disclosure will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the embodiments of this disclosure and are not intended to limit the embodiments of this disclosure.

[0043] like Figure 1 and Figure 2 As shown, one embodiment of this disclosure proposes an automatic wheel hub assembly device, the device comprising: an upper pressing mold 100, the upper pressing mold 100 being provided with a first annular receiving groove 110 for receiving a first wheel hub half to be assembled; and a lower pressing mold 200, the lower pressing mold 200 being provided with a second annular receiving groove 210 for receiving a second wheel hub half to be assembled; when the upper pressing mold 100 and the lower pressing mold 200 are pressed together, the first wheel hub half to be assembled is located in the first annular receiving groove 110, and the second wheel hub half to be assembled is located in the second annular receiving groove 210, and the first wheel hub half to be assembled and the second wheel hub half to be assembled are pressed together to form a whole.

[0044] The automatic wheel hub assembly device of this disclosure assembles the two-half wheel hub proposed in this disclosure embodiment. The two halves of the wheel hub have identical structures. The first and second annular receiving grooves have the same structure and dimensions, and the corresponding annular receiving grooves match the corresponding wheel hubs to be assembled. When assembling the wheel hub using the automatic wheel hub assembly device of this disclosure embodiment, the first and second halves of the wheel hub to be assembled are placed in the second annular receiving groove. The upper pressing mold is moved downwards, and the upper pressing mold and the lower pressing mold press together, allowing the first and second halves of the wheel hub to be assembled to fit together. Assembly is simple and quick; moreover, the automatic wheel hub assembly device has a simple structure and is easy to operate. After the wheel hubs are assembled together, polyurethane or rubber is wrapped around the outer edge of the wheel hub to create a caster.

[0045] like Figure 2 As shown, the upper pressing mold 100 includes: an upper pressing plate 120, the upper pressing plate 120 being disposed on a driving plate away from the surface of the lower pressing mold 200; an intermediate ring plate 130, the intermediate ring plate 130 being slidably connected to the upper pressing plate 120 and having an elastic gap with the upper pressing plate, the inner sidewall of which is circumferentially provided with grooves that avoid the inner ring, each groove being provided with a first positioning post 150; and an upper pressing plate 140, the upper pressing plate 140 being disposed in the central area of ​​the intermediate ring plate 130, the surface of the upper pressing plate 140 facing the lower pressing mold 200 and the sidewall of the intermediate ring plate 130 forming a first annular receiving groove 110.

[0046] The intermediate ring plate and the upper pressure plate have an elastic gap; the connection method is not described here. The upper pressure plate is fixedly connected to the intermediate ring plate and moves together. A positioning blind groove is provided in the central area of ​​the upper pressure plate, and a threaded hole is provided in the middle of the positioning blind groove.

[0047] like Figure 1 As shown, the pressing mold 200 includes: a first base plate 220, which is disposed on a base; a pressing plate 230, which is slidably connected to the first base plate 220 and has an elastic gap with the first base plate, and the pressing plate 230 is provided with a plurality of through grooves in the circumferential direction; an annular base plate 240, which is disposed on the surface of the pressing plate 230 facing the upper pressing mold 100, and its inner sidewall is provided with grooves that avoid the inner ring in the circumferential direction, and each groove is provided with a second positioning post 260; and a pressing plate 250, which is slidably disposed in the central area of ​​the annular base plate 240, and its bottom surface has an elastic gap with the pressing plate 230, and the surface of the pressing plate 250 facing the upper pressing mold 100 and the inner sidewall of the third annular base plate 240 form a second annular receiving groove 210.

[0048] The elastic connection structure between the lower pressure plate and the first base plate, and the elastic connection structure between the lower pressure plate and the lower pressure plate, will not be described in detail here. A positioning blind groove is also provided in the central area of ​​the lower pressure plate, and a bolt hole is provided in the center of the blind groove. The lower pressure plate can be connected to the lower pressure plate via an elastic element; the connection structure will not be described in detail here.

[0049] The first positioning post of the upper pressing mold and the second positioning post of the lower pressing mold are staggered. One end of the first positioning post is connected to the upper pressing plate, and one end of the second positioning post is connected to the first base plate through a through groove. The end face of the other end of the first positioning post is lower than the surface of the first annular receiving groove, forming a receiving groove with the corresponding groove to receive the edge of the first wheel hub half to be assembled. The other end of the second positioning post is lower than the surface of the second annular receiving groove, forming a receiving groove with the corresponding groove to receive the edge of the second wheel hub half to be assembled. The first positioning post and the second positioning post can slide within the corresponding grooves.

[0050] Specifically, the distance between the end face of the other end of the first positioning post 150 and the surface of the first annular receiving groove 110, and the distance between the other end of the second positioning post 260 and the surface of the second annular receiving groove 210, can be set according to the actual situation.

[0051] The first and second annular receiving grooves are located on the surfaces between the corresponding positioning posts and are recessed inward to form side grooves, which are used to accommodate the edge of another wheel hub half to be assembled.

[0052] like Figure 3As shown, two limiting sleeves can also be provided on one side of the drive plate, and two limiting posts can be provided on one side of the base, with the limiting posts cooperating with the corresponding limiting sleeves.

[0053] When the upper die is lifted, the limiting post remains inside the limiting sleeve to maintain the correspondence between the upper and lower dies and improve the accuracy of wheel assembly.

[0054] like Figure 3 As shown, both the upper pressure plate 140 and the lower pressure plate 250 have openings (not shown in the figure) in their central areas. A shaft post is installed in each opening, with one end connected to the upper pressure plate 120 and the lower pressure plate 230 respectively. The other end extends out of the first annular receiving groove 110 and the second annular receiving groove 210 respectively. The extended portion is used to pass through the shaft opening 370 of the corresponding wheel hub half 300 to be assembled. The extended portion, i.e., the shaft protrusion, is used to pass through the shaft opening 370 of the corresponding wheel hub half 300 to be assembled; the end face of the shaft protrusion is lower than the surface of the corresponding annular receiving groove.

[0055] The upper and lower pressure plates have openings in their central areas, and shafts are installed in the openings. The shafts have threads in the middle, and one end of each shaft is installed in the positioning blind groove of the upper and lower pressure plates, respectively, and is fastened with bolts. The second end is located on the surface of the upper and lower pressure plates, respectively, forming a shaft protrusion.

[0056] like Figures 4 to 9 As shown, the first wheel hub half to be assembled is the same as the second wheel hub half to be assembled, the first annular receiving groove 110 is the same as the second annular receiving groove 210, and the first wheel hub half to be assembled or the second wheel hub half to be assembled includes: an open cavity 310, a shaft opening 370 is provided in the central region of the cavity 310, and a radially outward flange 320 is provided circumferentially at the end of the open sidewall. Figure 8 As shown, the flange 320 and the radial width of the side wall end face form an engaging edge 330; the flange 320 is provided with a plurality of engaging teeth 340 extending away from the bottom wall of the cavity 310 at a predetermined distance on its outer circumferential direction, and the connection between the engaging teeth 340 and the flange 320 is an arc-shaped surface 350.

[0057] Furthermore, the shaft opening is provided with a limiting post protruding axially into the cavity, and the height of the limiting post is the same as the thickness of the side wall.

[0058] The preset distance between the engagement teeth is slightly smaller than the width of the engagement teeth to achieve an interference fit during assembly. The assembly device of this embodiment presses two wheel hub halves together, with the engagement teeth of the two halves interlocking to achieve connection. The ends of the engagement teeth are further engaged with the flange of the other wheel hub halves. Assembly is simple, requiring no bolts or welding processes, and maintains the strength of the assembly.

[0059] like Figure 4 As shown, the shaft opening 370 is circumferentially provided with a limiting post 360 that protrudes axially into the cavity 310, and the height of the limiting post 360 is the same as the thickness of the side wall.

[0060] When assembling two wheel hub halves, the upper pressure mold rises and separates from the lower pressure mold. The lower pressure plate rises under the action of the elastic element. At this time, the height of the second annular receiving groove is less than the height of the second wheel hub halves to be assembled. The second wheel hub halves to be assembled are placed in the second annular receiving groove, with the shaft opening passing through the shaft protrusion. The opening is away from the bottom wall of the second annular receiving groove, i.e., upward. The edge of the clamping tooth corresponds to the corresponding receiving groove, and the clamping tooth is received in the corresponding receiving groove. The arc surface fits against the bottom surface of the receiving groove. The first wheel hub halves to be assembled are placed on the second wheel hub halves to be assembled, with their openings facing each other. The clamping teeth of the two wheel hub halves to be assembled are staggered, and the receiving groove of the first annular receiving groove corresponds to the corresponding clamping tooth. The upper pressure mold is moved down, and the first wheel hub halves to be assembled enter the first annular receiving groove. The clamping teeth of the first wheel hub halves to be assembled enter the corresponding receiving groove in the first annular receiving groove. The upper pressure mold continues to move downward, as... Figure 7 As shown, the end face of the first positioning post fits against the arc-shaped surface of the engagement tooth, gradually pressing down the second wheel hub half to be assembled, causing the pressure plate to move downwards until it reaches the bottom and fits against the pressure plate. The first wheel hub half to be assembled is completely inserted into the first annular receiving groove, and the second wheel hub half to be assembled is completely inserted into the second annular receiving groove. The elastic gap disappears, and the surface of the first positioning post is flush with the surface of the first annular receiving groove, pressing and engaging the engagement tooth in the receiving groove against the flange of the second wheel hub half to be assembled. The surface of the second positioning post is flush with the second... The surface of the annular receiving groove is flush with the surface of the groove. The engaging teeth within the groove are pressed and engaged against the flange of the first wheel hub half to be assembled, thus pressing the first wheel hub half against the second wheel hub half to be assembled. Specifically, there is an interference fit between the engaging teeth of the first wheel hub half and two adjacent engaging teeth of the second wheel hub half. The ends of each engaging tooth engage with the flange of the other wheel hub half to be assembled. The engaging edges of the first wheel hub half and the second wheel hub half are in contact with each other, and the end faces of the two limiting posts are in contact, completing the wheel hub assembly. The engaged teeth ends are accommodated within the side groove of the other wheel hub half to be assembled.

[0061] like Figure 8 As shown, another aspect of this disclosure provides a caster hub, the caster hub comprising a hub 500 assembled using an automatic hub assembly device as described above.

[0062] like Figure 9 As shown, the engagement teeth 340 of the two wheel hub halves 300 to be assembled are interference-fitted with each other, and the end of the engagement tooth 340 of one wheel hub halves 300 to be assembled is engaged with the flange 320 of the other wheel hub halves 300 to be assembled; the engagement edges and the end faces of the limiting post of the two wheel hub halves to be assembled are in contact with each other.

[0063] The above description is only a preferred embodiment of the present disclosure. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present disclosure, and these improvements and modifications should also be considered within the protection scope of the present disclosure.

Claims

1. An automatic wheel hub assembly device, characterized in that, The device for assembling caster wheel hubs includes: An upper pressing mold (100) is provided with a first annular receiving groove (110), which is used to receive a first wheel hub half to be assembled; A pressing die (200) is provided with a second annular receiving groove (210) for accommodating a second wheel hub half to be assembled; When the upper pressing mold (100) and the lower pressing mold (200) are pressed together, the first half of the wheel hub to be assembled is located in the first annular receiving groove (110), and the second half of the wheel hub to be assembled is located in the second annular receiving groove (210). The first half of the wheel hub to be assembled and the second half of the wheel hub to be assembled are pressed together to form a whole.

2. The apparatus according to claim 1, characterized in that, The upper pressure mold (100) includes: An upper pressure plate (120) is disposed on a drive plate on a surface opposite to the lower pressure mold (200); The intermediate ring plate (130) is slidably connected to the upper pressure plate (120) and has an elastic gap with the upper pressure plate. Its inner sidewall is provided with grooves that avoid the ring in a circumferential manner, and each groove is provided with a first positioning post (150). The upper pressure plate (140) is disposed in the central area of ​​the intermediate ring plate (130). The surface of the upper pressure plate (140) facing the lower pressure mold (200) and the side wall of the intermediate ring plate (130) form a first annular receiving groove (110).

3. The apparatus according to claim 2, characterized in that, The pressing die (200) includes: First base plate (220), the first base plate (220) is disposed on the base; The lower pressure plate (230) is slidably connected to the first base plate (220) and has an elastic gap with the first base plate. The lower pressure plate (230) is provided with a plurality of through grooves in the circumferential direction. An annular base plate (240) is disposed on the surface of the lower pressure plate (230) facing the upper pressure mold (100), and its inner sidewall is provided with grooves that avoid the inner ring at intervals, and each groove is provided with a second positioning post (260). The lower pressure plate (250) is slidably disposed in the central area of ​​the annular base plate (240), and its bottom surface has an elastic gap with the lower pressure plate (230). The surface of the lower pressure plate (250) facing the upper pressure mold (100) forms a second annular receiving groove (210) with the inner sidewall of the annular base plate (240).

4. The apparatus according to claim 3, characterized in that, One end of the first positioning post (150) is connected to the upper pressure plate (120), and one end of the second positioning post (260) is connected to the first base plate (220) through a through groove; The end face of the other end of the first positioning post (150) is lower than the surface of the first annular receiving groove (110), forming a receiving groove with the corresponding groove to receive the edge of the first wheel hub half to be assembled. The other end of the second positioning post (260) is lower than the surface of the second annular receiving groove (210), forming a receiving groove with the corresponding groove to receive the edge of the second wheel hub half to be assembled.

5. The apparatus according to claim 3, characterized in that, The surfaces of the intermediate ring plate (130) and the annular bottom plate (240) between adjacent grooves are provided with inwardly recessed side grooves (400), which are used to accommodate the edge of another wheel hub half to be assembled.

6. The apparatus according to claim 3, characterized in that, The central regions of the first annular receiving groove (110) and the second annular receiving groove (210) are provided with axially elongated shaft protrusions, which are respectively used to pass through the shaft openings (370) of the corresponding wheel hub halves to be assembled.

7. The apparatus according to any one of claims 1 to 6, characterized in that, The first wheel hub half to be assembled is the same as the second wheel hub half to be assembled, and the first annular receiving groove (110) is the same as the second annular receiving groove (210). The first wheel hub half to be assembled or the second wheel hub half to be assembled includes: The cavity (310) has an open opening, and the central region of the cavity (310) is provided with a shaft opening (370). The end of the open sidewall is provided with a radially outward flange (320), and the flange (320) and the radial width of the sidewall end face form an engaging edge (330). The outer circumferential of the flange (320) is evenly provided with a plurality of engaging teeth (340) extending away from the bottom wall of the cavity (310) at a predetermined distance, and the connection between the engaging teeth (340) and the flange (320) is an arc-shaped surface (350).

8. The apparatus according to claim 7, characterized in that, The shaft opening (370) is circumferentially provided with a limiting post (360) that protrudes axially into the cavity (310), and the height of the limiting post (360) is the same as the thickness of the side wall.

9. The apparatus according to claim 8, characterized in that, When assembling two wheel hub halves, the upper pressing mold (100) rises and separates from the lower pressing mold. The lower pressing plate (250) rises under the action of the elastic element, placing the second wheel hub halves to be assembled in the second annular receiving groove (210), with the opening facing away from the bottom wall of the second annular receiving groove (210). The first wheel hub halves to be assembled are placed on the second wheel hub halves to be assembled, with the openings facing each other, and the meshing teeth (340) of the two wheel hub halves to be assembled are staggered. The upper pressing mold (100) moves down, and the first wheel hub halves to be assembled enter the first annular receiving groove (110). The second wheel hub halves to be assembled are gradually pressed down, causing the lower pressing plate (250) to move downward until it moves to the bottom and fits against the lower pressing plate (230). The first wheel hub halves to be assembled are completely inserted into the first annular receiving groove (110), and the second wheel hub halves to be assembled are then placed on top of the first annular receiving groove (210). The wheel hub half is fully inserted into the second annular receiving groove (210), the elastic gap disappears, the surface of the first positioning post (150) is flush with the surface of the first annular receiving groove (110), the surface of the second positioning post (260) is flush with the surface of the second annular receiving groove (210), the first wheel hub half to be assembled is pressed into the second wheel hub half to be assembled, that is, the tooth gap between the engagement tooth (340) of the first wheel hub half to be assembled and the two adjacent engagement teeth (340) of the second wheel hub half to be assembled is interference fit, the ends of each engagement tooth (340) are engaged with the flange (320) of the other wheel hub half to be assembled, the engagement edge (330) of the first wheel hub half to be assembled is in contact with the engagement edge (330) of the second wheel hub half to be assembled, and the end faces of the two limiting posts (360) are in contact, thus completing the wheel hub assembly.

10. A caster wheel hub, characterized in that, Includes a wheel hub assembled using the automatic wheel hub assembly device according to any one of claims 1 to 9; the two wheel hub halves to be assembled include a meshing tooth and a flange, wherein the meshing teeth (340) of the two wheel hub halves to be assembled are interference-fitted with each other, and the end of the meshing tooth (340) of one wheel hub halves to be assembled is engaged with the flange (320) of the other wheel hub halves to be assembled.

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