A kind of expandable wheel rim positioning assembly mold

Abstract

The present invention discloses an expandable rim positioning assembly die, comprising a die base, a template, a faceplate, a cone disk and an expander assembly. The die base is fixed on an equipment workbench, and a receiving cavity is provided inside the die base. The template is fixed on the top of the die base, and the faceplate is fixed on the top of the template. The expander assembly comprises a top plate arranged in the receiving cavity, an ejection mechanism for driving the top plate to move up and down, a plurality of wedge blocks arranged circumferentially along the upper surface of the top plate, and a plurality of sliders installed on the top of the faceplate and capable of sliding radially. The cone disk is fixed above the slider, and the outer circumferential surface of the cone disk is provided with a first inclined surface for initial positioning of the rim. The outer side of the slider is provided with an arc surface matching the shape of the rim, and the upper part of the wedge block is provided with a second inclined surface for interference fit with the slider and driving the slider to expand and tighten the rim outward. The present invention can adapt to the positioning of rims with different inner diameters without replacing the cone disk, and has high positioning accuracy, high efficiency and good press-fitting quality.

Description

Technical Field

[0001] The invention relates to the technical field of wheel assembly tooling manufacturing, in particular to an expandable wheel rim positioning assembly die. Background Art

[0002] The wheel is a rotating component between the tire and the axle that bears the load. It is mainly composed of a rim, spokes and a hub. The rim is the component of the wheel that fixes the tire. The spokes are the supporting components between the axle and the rim. The hub is a rotating component that connects the wheel and the axle and is responsible for bearing the load between the tire and the axle. During assembly, the spokes are first pressed into the rim using a wheel press-fitting mold installed on the workbench of the press.

[0003] like Figure 1 As shown, the wheel press-fitting mold currently used is usually a positive structure, that is, the rim 100 is installed on the lower die seat, and the spoke 200 is pressed into the rim 100 from top to bottom to complete the press-fitting of the wheel. The rim 100 is positioned by using a cone disk with an inclined surface on the outer peripheral surface, and the inclined surface of the inner wall surface of the rim 100 close to the wheel edge is tightly matched with the inclined surface of the cone disk to achieve positioning. Although this positioning method can meet production requirements, the thickness of the rim is different. When the inner diameter of the rim changes, it is necessary to adaptively replace the cone disk with a different inner diameter. Since it takes about 1.5 hours to replace a cone disk, a cone disk must be replaced every time the rim is changed, which consumes a lot of manpower and time, and the production efficiency is low. In addition, the cone disk positioning method is prone to problems such as positioning deviation, large end diameter jump, and poor matching accuracy, resulting in low precision and poor quality of the press-fitted wheel hub. Summary of the invention

[0004] In view of the above problems, the purpose of the present invention is to provide an expandable rim positioning assembly mold that can adapt to rims with different inner diameters, solving the technical problem that the existing cone disc positioning mentioned in the background technology cannot adapt to rims with different inner diameters. The present invention has high positioning accuracy, high production efficiency and good press-fitting quality.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] A scalable rim positioning assembly mold includes a mold base, a template, a faceplate, a cone disk and a scalable component. The mold base is fixed on the equipment workbench. The mold base has a receiving cavity inside. The template is fixed on the top of the mold base, and the faceplate is fixed on the top of the template. The scalable component includes a top plate arranged in the receiving cavity, an ejection mechanism for driving the top plate to move up and down, a plurality of wedges arranged circumferentially along the upper surface of the top plate, and a plurality of sliders installed on the top of the faceplate and capable of sliding radially. The cone disk is fixed above the slider, and the outer circumferential surface of the cone disk is provided with a first inclined surface for initial positioning of the rim. The outer side of the slider is provided with an arc surface matching the shape of the rim, and the wedge passes through the template and the faceplate in sequence from bottom to top. The upper part of the wedge is provided with a second inclined surface for interference fit with the slider and driving the slider to scalp outward and tighten the rim. A slider reset assembly is installed on the top of the faceplate.

[0007] Preferably, in order to achieve better interference fit, a third inclined surface for interference fit with the second inclined surface is provided on the inner side of the sliding block.

[0008] Furthermore, in order to achieve automatic resetting of the slider so that the press-fitted wheel hub can be easily removed, the slider resetting assembly includes a block and a first resetting spring, the slider is provided with a mounting hole that completely penetrates the slider, the block is arranged in the mounting hole, the bottom of the block is fixed on the faceplate, and the two ends of the first resetting spring are respectively connected to the block and the slider.

[0009] Furthermore, in order to facilitate installation, the wedge block is fixed to the top plate through a wedge block fixing plate, and there is a distance between the top surface of the wedge block fixing plate and the bottom surface of the template.

[0010] Furthermore, in order to enable the top plate to be reset in time, a top plate reset component is also included, and the top plate reset component includes a screw and a second reset spring. A screw hole is opened at the bottom of the template, and a through hole for the screw to pass through is opened at a position corresponding to the screw hole on the top plate. The screw passes through the top plate from bottom to top and the end is fixed in the screw hole. The second reset spring is sleeved on the outside of the screw and is located between the template and the top plate.

[0011] Furthermore, it also includes a spoke positioning assembly, which includes a guide post, a washer, a third return spring, a guide sleeve, a support plate and a spoke center hole positioning disk. A spring accommodating groove is provided at the bottom center of the guide post, the third return spring is arranged in the spring accommodating groove, the bottom of the third return spring contacts the upper surface of the template, and there is a gap between the bottom of the guide post and the upper surface of the template. The washer and the guide sleeve are respectively sleeved on the outside of the guide post, the bottom of the washer is fixed on the template, the guide sleeve is fixed on the top of the washer, and the plurality of wedges are evenly arranged around the outer wall of the washer. The support plate is fixed on the top of the guide post, the bottom of the support plate is spaced from the upper surface of the guide sleeve, the spoke center hole positioning disk is fixed on the top of the support plate, and the spoke center hole positioning disk is concentric with the cone disk.

[0012] Wherein, the guide column comprises a main guide column and a guiding column, the guiding column is fixed at the bottom of the main guide column, and the guide sleeve comprises a main guide sleeve, a first guiding sleeve and a second guiding sleeve arranged in sequence from bottom to top.

[0013] Furthermore, a key slot is vertically provided on one side of the guide column, and a key which matches the shape of the key slot and can slide in the key slot is horizontally installed in the main guide sleeve.

[0014] Furthermore, the ejection mechanism includes an ejection rod and a stud, the ejection rod passes through the equipment workbench from bottom to top and extends into the accommodating cavity, the stud is arranged on the top of the ejection rod, and the top plate is fixed on the stud.

[0015] Furthermore, an external thread is provided on the outer wall surface of the stud, and an internal thread hole matching the external thread is provided at the center of the top plate, and the top plate is installed on the stud by threaded connection. A mold adjustment rod for adjusting the stud up and down is vertically fixed at the center of the stud, and the mold adjustment rod extends upward into the spring accommodating groove. A hexagonal head is provided on the top of the mold adjustment rod, and a hexagonal head matching the hexagonal head is provided at the bottom of the mold adjustment wrench. A mold adjustment wrench is detachably mounted on the mold adjustment rod, and a hexagonal head matching the hexagonal head is provided at the bottom of the mold adjustment wrench. The mold adjustment wrench extends upward and passes through the spoke center hole positioning plate, and a rotating handle is fixedly connected to the top of the mold adjustment wrench. The stud can be adjusted up and down by rotating the mold adjustment rod, thereby adjusting the stroke of the wedge block and the distance of the slider, so as to further adapt to the press-fitting of rims with different inner diameters.

[0016] The present invention has the following beneficial effects: providing an expandable rim positioning assembly mold, which can adapt to the positioning of rims with different inner diameters by setting an expandable component without replacing the cone disk, saving time and labor, saving production time, and improving production efficiency; the final positioning achieved by the slider has high reliability and high precision, smaller end diameter jump, and the quality of the press-fitted wheel hub is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The figure is a structural diagram of an existing wheel rim positioning assembly mold.

[0018] Figure 2 It is a schematic diagram of the structure of the present invention when the cone disk is initially positioned.

[0019] Figure 3 for Figure 2 A partial enlarged schematic diagram of part A.

[0020] Figure 4 It is a schematic diagram of the structure of the present invention when the slider is finally positioned.

[0021] Figure 5 for Figure 4 A partial enlarged schematic diagram of part B.

[0022] Figure 6 This is a schematic diagram of the flower disc's top view structure.

[0023] Figure 7 Schematic diagram of the cross-sectional structure of the cone disk.

[0024] Figure 8 Schematic diagram of the structure of the wedge.

[0025] Fig. 9 This is a schematic diagram of the structure of the slider.

[0026] Fig.10 Schematic diagram of the structure of the leading column.

[0027] Fig.11 The schematic diagram of the structure of the main set.

[0028] Fig.12 It is a schematic diagram of the structure of the mold adjusting rod.

[0029] Fig.13 It is a structural schematic diagram of the mold adjustment wrench.

[0030] Description of the main component symbols: 100, rim; 200, spoke; 1, mold base; 10, accommodating cavity; 2, template; 3, face plate; 4, cone plate; 40, first inclined surface; 51, top plate; 52, wedge block; 520, second inclined surface; 521, wedge block fixing plate; 53, slider; 530, mounting hole; 531, arc surface; 532, third inclined surface; 533, stopper; 534, first return spring; 541, ejector rod; 542, stud; 61, screw; 62. Second return spring; 701. Keyway; 702. Key; 71. Guide column; 710. Spring accommodating groove; 711. Main guide column; 712. Guiding column; 72. Washer; 73. Third return spring; 74. Guide sleeve; 741. Main guide sleeve; 742. First guiding sleeve; 743. Second guiding sleeve; 75. Support plate; 76. Spoke center hole positioning plate; 8. Adjusting die rod; 80. Hexagonal head; 9. Adjusting die wrench; 90. Hexagon socket head; 91. Rotating handle. DETAILED DESCRIPTION

[0031] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods.

[0032] like Figure 2-13 As shown, an expandable rim positioning assembly mold includes a mold base 1, a mold plate 2, a face plate 3, a cone plate 4, an expansion component, a top plate resetting component, a spoke positioning component, a mold adjusting rod 8 and a mold adjusting wrench 9.

[0033] The mold base 1 is fixed on the equipment workbench, and the mold base 1 has a receiving cavity 10 inside. The template 2 is fixed on the top of the mold base 1, and the faceplate 3 is fixed on the top of the template 2. The expansion assembly includes a top plate 51 arranged in the receiving cavity 10, an ejection mechanism for driving the top plate 51 to move up and down, a plurality of wedges 52 arranged circumferentially along the upper surface of the top plate 51, and a plurality of sliders 53 installed on the top of the faceplate 3 and capable of sliding in the radial direction. The cone disk 4 is fixed above the slider 53, and the cone disk 4 is connected and fixed to the faceplate 3 by bolts. The outer circumferential surface of the cone disk 4 is provided with a first inclined surface 40 for initial positioning of the rim. The outer side of the slider 53 is provided with an arc surface 531 matching the shape of the rim 100. The wedge 52 passes through the template 2 and the faceplate 3 from bottom to top in sequence. The upper part of the wedge 52 is provided with a second inclined surface 520 for interference fit with the slider 53 and driving the slider 53 to open and press the rim 100 outward. The inner side of the slider 53 is provided with a third inclined surface 532 for interference fit with the second inclined surface 520. The wedge 52 is fixed to the top plate 51 by a wedge fixing plate 521. There is a movable spacing of 25-35 mm between the top surface of the wedge fixing plate 521 and the bottom surface of the template 2.

[0034] A slider reset assembly is installed on the top of the face disc 3, and the slider reset assembly includes a stopper 533 and a first reset spring 534. The slider 53 is provided with a mounting hole 530 that completely penetrates the slider. The stopper 533 is arranged in the mounting hole 530. The bottom of the stopper 533 is fixed on the face disc 3. The two ends of the first reset spring 534 are respectively connected to the stopper 533 and the slider 53.

[0035] The top plate reset assembly includes a screw 61 and a second reset spring 62. A screw hole is provided at the bottom of the template 2, and a through hole for the screw to pass through is provided at a position corresponding to the screw hole on the top plate 51. The screw 61 passes through the top plate 51 from bottom to top and the end is fixed in the screw hole. The second reset spring 62 is sleeved on the outside of the screw 61 and is located between the template 2 and the top plate 51.

[0036] The spoke positioning assembly includes a guide post 71, a washer 72, a third return spring 73, a guide sleeve 74, a support plate 75 and a spoke center hole positioning plate 76. A spring receiving groove 710 is provided at the bottom center of the guide post 71, and the third return spring 73 is arranged in the spring receiving groove 710. The bottom of the third return spring 73 contacts the upper surface of the template 2, and there is a movable spacing of 35-45mm between the bottom of the guide post 71 and the upper surface of the template 2. The washer 72 and the guide sleeve 74 are respectively sleeved on the outside of the guide post 71, the bottom of the washer 72 is fixed on the template 2, the guide sleeve 74 is fixed on the top of the washer 72, and a plurality of wedges 52 are evenly arranged around the outer wall of the washer 72. The support plate 75 is fixed on the top of the guide column 71 , and there is a 20-30 mm gap between the bottom of the support plate 75 and the upper surface of the guide sleeve 74 . The spoke center hole positioning plate 76 is fixed on the top of the support plate 75 , and the spoke center hole positioning plate 76 is concentric with the cone plate 4 .

[0037] The guide post 71 includes a main post 711 and a guiding post 712, and the guiding post 712 is fixed at the bottom of the main post 711. The guide sleeve 74 includes a main sleeve 741, a first guiding sleeve 742, and a second guiding sleeve 743 arranged in sequence from bottom to top. A key slot 701 is vertically provided on one side of the guide post 71, and a key 702 that matches the shape of the key slot 701 and can slide in the key slot 701 is horizontally installed in the main sleeve 741.

[0038] The ejection mechanism includes an ejection rod 541 and a stud 542. The ejection rod 541 passes through the equipment workbench from bottom to top and extends into the accommodating chamber 10. The stud 542 is arranged at the top of the cylinder head of the ejection rod 541, and the top plate 51 is fixed on the stud 542. An external thread is arranged on the outer wall surface of the stud 542, and an internal thread hole matching the external thread is opened at the center of the top plate 51. The top plate 51 is installed on the stud 542 through a threaded connection. The mold adjustment rod 8 is vertically fixed at the center of the stud 542, and the mold adjustment rod 8 extends upward into the spring accommodating groove 710. A hexagonal head 80 is arranged on the top of the mold adjustment rod 8. The bottom of the mold adjusting wrench 9 is provided with an inner hexagon head 90 adapted to the hexagonal head 80. The mold adjusting wrench 9 passes through the spoke center hole positioning plate 76, the support plate 75 and the guide column 71 from top to bottom and is sleeved with the hexagonal head 80. The mold adjusting wrench 9 can be disassembled when not needed. The top of the mold adjusting wrench 9 is fixedly connected with a rotating handle 91.

[0039] The working principle of the present invention is as follows: according to the inner diameter of the rim 100, the mold adjustment wrench 9 is inserted into the spring receiving groove 710, so that the hexagonal head 90 of the mold adjustment wrench 9 is clamped on the hexagonal head 80 of the mold adjustment rod 8, and the handle 91 is turned to adjust the stud 542 up and down, thereby adjusting the stroke of the wedge block 52. After the adjustment is completed, the mold adjustment wrench 9 is taken out, and the rim with press fit is placed in the assembly mold, and the initial positioning is achieved through the first inclined surface 40 of the cone disk 4. The action of the ejector rod 541 drives the stud 542 and the top plate 51 to move upward, and the several wedge blocks 52 installed on the top of the top plate 51 move upward at the same time, and the second inclined surface 520 on the top of the wedge block 52 and the third inclined surface 532 of the slider 53 produce interference fit, so that the slider 53 is radially spread and supports the inner side of the wheel flange of the rim 100.

[0040] After the positioning is completed, the spoke 200 is installed on the spoke center hole positioning plate 76 through the center hole positioning, and the upper die (not shown in the figure) moves to press the spoke 200 down until it is pressed into the rim 100 with interference. After the press-fitting is completed, the upper die and the ejector rod 541 return to their respective positions, the top plate 51 and the plurality of wedges 52 installed thereon are reset downward under the action of the second reset spring 62, and the slider 53 is reset inward under the action of the first reset spring 534. Finally, the entire wheel hub that has been press-fitted can be taken out. The assembly die of the present invention can be applied to different rims with an inner diameter difference between 0-10mm, and can basically cover all rims of different thicknesses, and is suitable for promotion and use.

[0041] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, it should be understood by those skilled in the art that various changes in form and details may be made to the present invention without departing from the spirit and scope of the invention as defined in the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. An expandable rim positioning assembly mold, characterized in that: The invention comprises a mold base, a template, a faceplate, a cone disk and a support component, wherein the mold base is fixed on a working table of the equipment, the mold base has a containing cavity inside, the template is fixed on the top of the mold base, the faceplate is fixed on the top of the template, the support component comprises a top plate arranged in the containing cavity, an ejection mechanism for driving the top plate to move up and down, a plurality of wedges arranged circumferentially along the upper surface of the top plate, and a plurality of sliders installed on the top of the faceplate and capable of sliding radially, the cone disk is fixed above the slider, the outer peripheral surface of the cone disk is provided with a first inclined surface for initial positioning of the wheel rim, the outer side of the slider is provided with an arc surface matching the shape of the wheel rim, the wedge passes through the template and the faceplate in sequence from bottom to top, the upper part of the wedge is provided with a second inclined surface for interference fit with the slider and driving the slider to support and tighten the wheel rim outward, and a slider reset component is installed on the top of the faceplate; The slider reset assembly includes a stopper and a first reset spring. The slider is provided with a mounting hole that completely penetrates the slider. The stopper is arranged in the mounting hole. The bottom of the stopper is fixed on the faceplate. Both ends of the first reset spring are connected to the stopper and the slider respectively. The ejection mechanism comprises an ejection rod and a stud, wherein the ejection rod passes through the equipment workbench from bottom to top and extends into the accommodating cavity, the stud is arranged on the top of the ejection rod, and the top plate is fixed on the stud.

2. The expandable rim positioning assembly mold according to claim 1, characterized in that: The inner side of the sliding block is provided with a third inclined surface for interference fit with the second inclined surface.

3. The expandable rim positioning assembly mold according to claim 1, characterized in that: The wedge block is fixed on the top plate via a wedge block fixing plate, and there is a distance between the top surface of the wedge block fixing plate and the bottom surface of the template.

4. The expandable rim positioning assembly mold according to claim 1, characterized in that: It also includes a top plate reset component, which includes a screw and a second reset spring. A screw hole is opened at the bottom of the template, and a through hole for the screw to pass through is opened at a position corresponding to the screw hole on the top plate. The screw passes through the top plate from bottom to top and the end is fixed in the screw hole. The second reset spring is sleeved on the outside of the screw and is located between the template and the top plate.

5. The expandable rim positioning assembly mold according to claim 1, characterized in that: The wheel spoke positioning assembly also includes a guide post, a washer, a third return spring, a guide sleeve, a support plate and a spoke center hole positioning disk. A spring accommodating groove is provided at the bottom center of the guide post. The third return spring is arranged in the spring accommodating groove. The bottom of the third return spring contacts the upper surface of the template. There is a spacing between the bottom of the guide post and the upper surface of the template. The washer and the guide sleeve are respectively sleeved on the outside of the guide post. The bottom of the washer is fixed on the template. The guide sleeve is fixed on the top of the washer. The plurality of wedges are evenly arranged around the outer wall of the washer. The support plate is fixed on the top of the guide post. There is a spacing between the bottom of the support plate and the upper surface of the guide sleeve. The spoke center hole positioning disk is fixed on the top of the support plate. The spoke center hole positioning disk is concentric with the cone disk.

6. The expandable rim positioning assembly mold according to claim 5, characterized in that: The guide column comprises a main guide column and a guiding column, the guiding column is fixed at the bottom of the main guide column, and the guide sleeve comprises a main guide sleeve, a first guiding sleeve and a second guiding sleeve arranged in sequence from bottom to top.

7. The expandable rim positioning assembly mold according to claim 6, characterized in that: A key slot is vertically provided on one side of the guide column, and a key which matches the shape of the key slot and can slide in the key slot is horizontally installed in the main guide sleeve.

8. The expandable rim positioning assembly mold according to claim 7, characterized in that: An external thread is provided on the outer wall surface of the stud, an internal thread hole matching the external thread is opened at the center of the top plate, the top plate is installed on the stud through a threaded connection, a mold adjusting rod for adjusting the stud up and down is vertically fixed at the center of the stud, the mold adjusting rod extends upward into the spring accommodating groove, a hexagonal head is provided on the top of the mold adjusting rod, a mold adjusting wrench is detachably installed on the mold adjusting rod, an inner hexagonal head matching the hexagonal head is provided at the bottom of the mold adjusting wrench, the mold adjusting wrench extends upward and passes through the spoke center hole positioning plate, and a rotating handle is fixedly connected to the top of the mold adjusting wrench.

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