Expanding die for tubeless rim of steel wheel

Abstract

The utility model relates to an expansion mould of steel wheel tubeless rim relates to expansion mould technical field, including upper mould subassembly, lower mould subassembly and guide subassembly, upper mould subassembly includes upper template, upper adjusting nut, upper cone and upper module, upper adjusting nut is connected to upper template, upper cone is connected with upper adjusting nut, lower module is connected with lower adjusting nut. The upper modules are distributed around the upper cone in a circumferential array mode and slide in the radial direction of the upper cone. The lower die assembly comprises a lower die plate, a lower adjusting nut, a lower cone and a lower module, the lower adjusting nut is connected to the lower die plate, the lower cone is connected with the lower adjusting nut, the lower die plate is distributed around the lower cone in a circumferential array mode, the lower module slides in the radial direction of the lower cone, and one end of the guide assembly is fixedly connected with the upper die assembly or the lower die assembly. The other end of the guide assembly is in sliding connection with the lower die assembly or the upper die assembly. The expanding die for the tubeless rim of the steel wheel is simple in structure and can be suitable for machining of rims of various models.

Description

Technical Field

[0001] The utility model relates to an expansion die, in particular to an expansion die for a tubeless rim of a steel wheel. Background Art

[0002] In order to improve the processing quality of the rim, the dimensional accuracy and positional accuracy of the rim are improved through the expansion and shaping process during the rim processing. The expansion and shaping of the rim is achieved through a mold, as shown in the publication number CN219025643U, which is named a wheel rim expansion and finishing mold. The working principle of this mold is to push the shaping module to move horizontally through a core shaft with a conical surface to complete the expansion and shaping of the rim. The disadvantages of this mold are: (1) The structure is complex, which not only makes the manufacturing cost and maintenance cost too high, but also affects the processing accuracy due to the accumulation of processing errors or assembly errors; (2) It cannot be adapted to the processing of multiple models of rims at the same time. Utility Model Content

[0003] Technical purpose: In order to overcome the deficiencies in the prior art, the utility model provides an expansion die for a tubeless rim of a steel wheel.

[0004] Technical solution: To achieve the above-mentioned purpose, the utility model discloses an expansion mold for a tubeless rim of a steel wheel, comprising:

[0005] An upper mold assembly, comprising an upper mold plate, an upper adjustment nut, an upper cone, and an upper die block, wherein the upper adjustment nut is connected to the upper mold plate, the upper cone is connected to the upper adjustment nut, and their relative positions are adjustable, the upper die blocks are distributed in a circular array around the upper cone, and the upper die blocks are slidably connected to the upper mold plate, and the upper die blocks slide along the radial direction of the upper cone;

[0006] A lower mold assembly, comprising a lower mold plate, a lower adjustment nut, a lower cone, and a lower die block, wherein the lower adjustment nut is connected to the lower mold plate, the lower cone is connected to the lower adjustment nut, and their relative positions are adjustable, the lower die blocks are distributed in a circumferential array around the lower cone, and the lower die blocks are slidably connected to the lower mold plate, and the lower die blocks slide along the radial direction of the lower cone;

[0007] The upper mold assembly and the lower mold assembly slide relative to each other to move closer to or away from each other;

[0008] A guide assembly, one end of which is fixedly connected to the upper mold assembly or the lower mold assembly, and the other end of which is slidably connected to the lower mold assembly or the upper mold assembly.

[0009] Furthermore, the upper template includes an upper plate body and an upper guide plate, the upper plate body and the upper guide plate are placed superimposed on each other, the upper guide plate is connected to a guide rail, the upper module is provided with a guide groove, and the guide rail is slidably connected to the guide groove.

[0010] Furthermore, springs are arranged around the upper modules, and under the action of the springs, all the upper modules have a movement tendency to gather together.

[0011] Furthermore, the upper cone and the upper adjusting nut are sleeved together, and the upper cone and the upper adjusting nut are screwed together.

[0012] Furthermore, the lower template includes a lower plate body and a lower guide plate, the lower plate body and the lower guide plate are placed superimposed on each other, the lower guide plate is connected to a guide rail, the lower module is provided with a guide groove, and the guide rail is slidably connected to the guide groove.

[0013] Furthermore, springs are arranged around the lower modules, and under the action of the springs, all the lower modules have a movement tendency to gather together.

[0014] Furthermore, the lower cone and the lower adjusting nut are sleeved, and the lower cone and the lower adjusting nut are screwed together; a first connecting piece is also connected between the lower cone and the lower adjusting nut.

[0015] Furthermore, the guide assembly is a guide pin, which is connected to the upper cone through a second connecting piece; the guide pin passes through the upper cone and is screwed to the upper adjustment nut, and the lower cone is provided with a groove for the guide pin to pass through.

[0016] Furthermore, the lower mold assembly is connected to a guide rod, the upper mold assembly is connected to a guide sleeve, and the guide rod is slidably connected to the guide sleeve.

[0017] The expansion mold for the tubeless rim of a steel wheel of the utility model has the following technical effects:

[0018] (1) The device can adjust the sliding distance between the upper module and the lower module by adjusting the axial position relationship between the upper adjustment nut and the upper cone and the axial position relationship between the lower adjustment nut and the lower cone, thereby using the expansion of different types of rims.

[0019] (2) The overall structure is simplified to the greatest extent, which avoids the accumulation of errors caused by parts processing and assembly due to redundant structures and improves the processing accuracy of the workpiece.

[0020] (3) The upper module is connected to the upper guide plate through a guide rail and a guide groove, and the lower module is connected to the lower guide plate through a guide rail and a guide groove, which ensures that the upper module and the lower module slide strictly according to the established path to ensure the expansion effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of the utility model;

[0022] Figure 2Schematic diagram of the structure of the upper mold assembly;

[0023] Figure 3 It is a structural diagram of the lower mold assembly.

[0024] In the figure, 1. upper mold assembly; 101. upper mold plate; 102. upper adjusting nut; 103. upper cone; 104. upper module; 105. upper plate; 106. upper guide plate; 107. guide sleeve; 2. lower mold assembly; 201. lower mold plate; 202. lower adjusting nut; 203. lower cone; 204. lower module; 205. lower plate; 206. lower guide plate; 207. first connecting member; 208. groove; 209. guide rod; 3. guide assembly; 4. guide rail; 5. guide groove; 6. spring; 7. second connecting member; 8. workpiece. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1 To the attached Figure 3 The principles and features of the present invention are described, and the examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0026] A tubeless rim expansion die for a steel wheel comprises an upper die assembly 1, a lower die assembly 2, and a guide assembly 3. The upper die assembly 1 is positioned directly above the lower die assembly 2. The upper die assembly 1 and the lower die assembly 2 are slidably connected relative to each other, allowing them to slide toward or away from each other. The relative sliding between the upper die assembly 1 and the lower die assembly 2 is achieved by: a guide rod 209 is connected to the lower die assembly 2, and a guide sleeve 107 is connected to the upper die assembly 1. The guide rod 209 extends upward through the guide sleeve 107 and forms a slidable connection therewith. One end of the guide assembly 3 is fixedly connected to the upper die assembly 1 or the lower die assembly 2, while the other end of the guide assembly 3 is slidably connected to the lower die assembly 2 or the upper die assembly 1. Specifically, in this embodiment, the guide assembly 3 is a guide pin that passes through the upper cone 103 and is threadedly engaged with the upper adjustment nut 102. The lower cone 203 is provided with a groove 208 for the guide pin to pass through.

[0027] The upper mold assembly 1 includes an upper mold plate 101, an upper adjustment nut 102, an upper cone 103 and an upper module 104; the upper mold plate 101 includes an upper plate body 105 and an upper guide plate 106. The upper plate body 105 and the upper guide plate 106 are placed on top of each other, and the upper guide plate 106 is attached to the side of the upper plate body 105 facing the lower mold assembly 2. The upper guide plate 106 is fixed to the upper plate body 105 by bolts. The upper guide plate 106 is connected to the guide rail 4, and the guide rail 4 has multiple and radial array distributions. The upper adjustment nut 102 is connected to the upper mold plate 101 and is arranged at the array center of the guide rail 4. The upper cone 103 is connected to the upper adjustment nut 102, and the relative position is adjustable. Specifically, the upper cone 103 is sleeved with the upper adjustment nut 102, and the upper cone 103 is screwed with the upper adjustment nut 102. For the screwing position, please refer to the attached figure. Figure 2 At point A in the middle. The upper modules 104 are distributed in a circular array around the upper cone 103. A guide groove 5 is provided on the plane where the upper module 104 and the upper guide plate 106 are in contact. The guide rail 4 corresponds to the guide groove 5 one by one and forms a sliding connection. The guide groove 5 is adapted to the shape of the guide rail 4 and should be T-shaped or dovetail-shaped. Based on the above structure, the upper module 104 is slidably connected to the upper template 101, and the upper module 104 slides radially along the upper cone 103. The conical surface of the upper cone 103 is in contact with one of the side surfaces of the upper module 104. A spring 6 is provided around all the upper modules 104. The upper cone 103 moves axially along the upper module 104, and all the upper modules 104 are separated from each other; under the action of the spring 6, all the upper modules 104 have a movement tendency to gather together.

[0028] The lower mold assembly 2 includes a lower mold plate 201, a lower adjustment nut 202, a lower cone 203 and a lower module 204; the lower mold plate 201 includes a lower plate body 205 and a lower guide plate 206. The lower plate body 205 and the lower guide plate 206 are stacked on each other, and the lower guide plate 206 is attached to the side of the lower plate body 205 facing the upper mold assembly 1 and fixed to each other by bolts. The lower guide plate 206 is connected to the guide rail 4, and the guide rail 4 is distributed in a radial array. The lower cone 203 is connected to the lower adjustment nut 202, and the relative position is adjustable. Specifically, the lower cone 203 is sleeved with the lower adjustment nut 202, and the lower cone 203 is screwed with the lower adjustment nut 202. The screwing position is shown in the attached figure. Figure 3B in the figure. A first connecting member 207 is also connected between the lower cone 203 and the lower adjustment nut 202. The first connecting member 207 is a bolt. The lower template 201 is distributed in a circular array around the lower cone 203. A guide groove 5 is provided on the plane where the lower module 204 and the lower guide plate 206 are in contact. The guide rail 4 corresponds to the guide groove 5 one by one and forms a sliding connection. The guide groove 5 is adapted to the shape of the guide rail 4 and should be T-shaped or dovetail-shaped. Based on the above structure, the lower module 204 is slidably connected to the lower template 201, and the lower module 204 slides along the radial direction of the lower cone 203. The conical surface of the lower cone 203 is in contact with one of the side surfaces of the lower module 204. A spring 6 is provided around all the lower modules 204. Under the action of the lower cone 203, all the lower modules 204 have a tendency to move apart from each other; under the action of the spring 6, all the lower modules 204 have a tendency to move together.

[0029] The working principle of the device is as follows: (1) the upper die assembly 1 and the lower die assembly 2 are separated from each other, and the workpiece 8 to be shaped is placed on the lower die assembly 2; (2) the upper die assembly 1 is driven to move downward, and during the movement of the upper die assembly 1, the upper die block 104 and the lower die block 204 are first aligned with each other, and then the upper die assembly 1 continues to move downward. Under the action of the upper cone 103 and the lower cone 203, the upper die block 104 slides along the radial direction of the upper cone 103, and the lower die block 204 slides along the radial direction of the lower cone 203. The upper die block 104 and the lower die block 204 push the workpiece 8 to expand and complete the shaping.

[0030] When the lateral movement distance of the upper module 104 or the lower module 204 needs to be adjusted, the axial relative positions of the upper cone 103 and the upper adjustment nut 102 and the axial relative positions of the lower cone 203 and the lower adjustment nut 202 can be adjusted.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An expansion die for a tubeless rim of a steel wheel, characterized in that: include: An upper mold assembly (1), the upper mold assembly (1) comprising an upper mold plate (101), an upper adjustment nut (102), an upper cone (103) and an upper module (104), the upper adjustment nut (102) being connected to the upper mold plate (101), the upper cone (103) being connected to the upper adjustment nut (102), and the relative positions of the upper modules (104) being adjustable, the upper modules (104) being distributed in a circular array around the upper cone (103), and the upper modules (104) being slidably connected to the upper mold plate (101), and the upper modules (104) sliding along the radial direction of the upper cone (103); A lower mold assembly (2), the lower mold assembly (2) comprising a lower mold plate (201), a lower adjustment nut (202), a lower cone (203) and a lower module (204), the lower adjustment nut (202) being connected to the lower mold plate (201), the lower cone (203) being connected to the lower adjustment nut (202), and the relative positions of the lower modules (204) being adjustable, the lower modules (204) being distributed in a circumferential array around the lower cone (203), the lower modules (204) being slidably connected to the lower mold plate (201), and the lower modules (204) sliding along the radial direction of the lower cone (203); The upper mold assembly (1) and the lower mold assembly (2) slide relative to each other until they are close to each other or away from each other; A guide assembly (3), one end of the guide assembly (3) is fixedly connected to the upper mold assembly (1) or the lower mold assembly (2), and the other end of the guide assembly (3) is slidably connected to the lower mold assembly (2) or the upper mold assembly (1).

2. The expansion mold for a steel wheel tubeless rim according to claim 1, characterized in that: The upper template (101) includes an upper plate body (105) and an upper guide plate (106), wherein the upper plate body (105) and the upper guide plate (106) are stacked on each other, the upper guide plate (106) is connected to a guide rail (4), and the upper module (104) is provided with a guide groove (5), and the guide rail (4) is slidably connected to the guide groove (5).

3. The expansion mold for a steel wheel tubeless rim according to claim 1, characterized in that: Springs (6) are arranged around the upper modules (104), and under the action of the springs (6), all the upper modules (104) have a movement tendency of gathering together.

4. The expansion mold for a steel wheel tubeless rim according to claim 1, wherein: The upper cone (103) and the upper adjusting nut (102) are sleeved together, and the upper cone (103) and the upper adjusting nut (102) are screwed together.

5. The expansion mold for a steel wheel tubeless rim according to claim 1, wherein: The lower template (201) includes a lower plate body (205) and a lower guide plate (206), wherein the lower plate body (205) and the lower guide plate (206) are stacked on each other, the lower guide plate (206) is connected to a guide rail (4), and the lower module (204) is provided with a guide groove (5), and the guide rail (4) is slidably connected to the guide groove (5).

6. The expansion mold for a steel wheel tubeless rim according to claim 1, wherein: A spring (6) is arranged around the lower module (204), and under the action of the spring (6), all the lower modules (204) have a movement tendency of gathering together.

7. The expansion mold for a tubeless rim of a steel wheel according to claim 1, wherein: The lower cone (203) and the lower adjusting nut (202) are sleeved together, and the lower cone (203) and the lower adjusting nut (202) are screwed together; a first connecting member (207) is also connected between the lower cone (203) and the lower adjusting nut (202).

8. The expansion die for a tubeless rim of a steel wheel according to claim 1, wherein: The guide assembly (3) is a guide pin, which is connected to the upper cone (103) through a second connecting piece (7); the guide pin passes through the upper cone (103) and is screwed to the upper adjustment nut (102), and the lower cone (203) is provided with a groove (208) for the guide pin to pass through.

9. The expansion die for a tubeless rim of a steel wheel according to claim 1, wherein: The lower die assembly (2) is connected to a guide rod (209), the upper die assembly (1) is connected to a guide sleeve (107), and the guide rod (209) is slidably connected to the guide sleeve (107).

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