Rim flange forming device

Abstract

The utility model discloses a rim flanging forming device, including base, bottom die, top seat, top die and mould, the lower extreme fixed connection base of bottom die, and the sleeve of bottom die has movable positioning sleeve, and the lower extreme fixed connection of movable positioning sleeve has a plurality of lift poles, and the upper extreme fixed connection top seat of top die, and the inside of top die is equipped with mould cavity, and the upper end all around of mould cavity is equipped with the direction surface, and the all around of top die is equipped with a plurality of installation mouth, and the side pressure rod is inserted respectively in installation mouth, and the mould is located in the inside of mould cavity, and the upper extreme fixed connection of mould has a plurality of springs, and spring fixed connection top seat. The rim flanging forming device of the utility model, movable positioning sleeve and guide rod cooperate, and the rim rough processing piece is positioned accurately, avoids the stamping deviation, reduces the size error, and does not need subsequent correction, reduces cost and working hours, and the side pressure rod circumferential array and multiple stamping cooperate arc direction surface, and the rim stress is dispersed, prevents crack wrinkle, and improves forming stability.

Description

Technical Field

[0001] This utility model belongs to the field of wheel rim forming technology, specifically relating to a wheel rim flanging forming device. Background Technology

[0002] Currently, the commonly used rim flanging forming equipment in the industry generally suffers from insufficient positioning accuracy: most devices use a single mold for positioning, and the rim initial processing parts are prone to radial displacement during the stamping process, resulting in excessive flanging size error. Subsequent correction processing is required, which increases production costs and time. Meanwhile, the forming stability of existing equipment is unsatisfactory. Traditional devices mostly complete the flanging through a single stamping, which concentrates the stress on the edge of the rim, making it prone to cracks or wrinkles. Furthermore, the fit clearance between the top die and the pressure die is difficult to control precisely, further exacerbating forming defects. In addition, there are also significant shortcomings in the demolding process: the formed rim is often difficult to remove because it fits too tightly into the mold cavity, requiring manual assistance for unloading. This is not only inefficient but may also cause scratches on the rim surface due to improper operation. Although some equipment is equipped with an ejection structure, uneven ejection force can easily lead to rim deformation, affecting the product qualification rate. Utility Model Content

[0003] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a rim flanging forming device, including a base, a bottom mold, a top seat, a top mold, and a pressing mold. The lower end of the bottom mold is fixedly connected to the base, and a movable positioning sleeve is fitted on the bottom mold. The upper end of the movable positioning sleeve is bent outward to form a linkage part. Several lifting rods are fixedly connected to the lower end of the movable positioning sleeve. The base is provided with a movable hole for the lifting rods to move through. After the lower end of the lifting rod passes through the movable hole, a lifting plate is fixedly connected. The upper end of the top mold is fixedly connected to the top seat. A mold cavity is provided inside the top mold. An insertion port for the bottom mold to extend into the mold cavity is provided on the lower end face of the top mold. A guide surface is provided around the upper end of the mold cavity. Several mounting ports are provided around the top mold. Side pressure rods are inserted into the mounting ports. One end of the side pressure rod is provided with an arc-shaped guide surface, and the other end is fixedly connected to a limit plate. The pressing mold is located inside the mold cavity. Several springs are fixedly connected to the upper end of the pressing mold, and the springs are fixedly connected to the top seat.

[0004] As a preferred embodiment of the above technical solution, a plurality of guide rods are fixedly connected around the upper end of the die, the top die is provided with guide holes for the guide rods to move through, the top seat is provided with guide channels for the upper ends of the guide rods to move, and a push rod is fixedly connected to the middle of the upper end of the die. The top die and the top seat are respectively provided with through holes for the push rods to move through. The diameter of the guide hole is smaller than the diameter of the guide channel, and the diameter of the guide hole is larger than the diameter of the upper end of the guide rod.

[0005] As a preferred embodiment of the above technical solution, a mounting plate is provided on one side of the base, a vertical slide rail is provided on the mounting plate, a slider is provided on the vertical slide rail, the base is fixedly connected to the mounting plate, and the slider is fixedly connected to the top seat.

[0006] As a preferred embodiment of the above technical solution, a spring is fitted onto the side pressure rod, and the spring is clamped between the limiting plate and the top mold.

[0007] As a preferred embodiment of the above technical solution, the number of side pressure rods is at least three, and all side pressure rods are distributed in a circular array around the top mold.

[0008] As a preferred embodiment of the above technical solution, a spring is fitted onto the lifting rod, and the spring is clamped between the base and the movable positioning sleeve.

[0009] The beneficial effects of this utility model are as follows: 1. The movable positioning sleeve and guide rod cooperate to accurately position the initial machined rim part, avoid stamping offset, reduce dimensional errors, eliminate the need for subsequent correction, and reduce costs and labor time; 2. The side pressure rods are arranged in a circumferential array and are stamped multiple times, combined with the arc-shaped guide surface, to disperse the force on the rim, prevent cracks and wrinkles, and improve molding stability; 3. The ejector rod and spring ejection structure can smoothly eject the formed rim, avoid scratches and deformation, and improve the pass rate and demolding efficiency; 4. The vertical slide rail and slider cooperate to ensure smooth lifting of the top mold, improve mold centering, meet the needs of high-precision production, and significantly optimize overall processing efficiency and quality. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0011] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0012] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0013] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0014] like Figure 1 As shown, the rim flanging forming device includes a base 1, a bottom mold 2, a top seat 3, a top mold 4, and a pressing mold 5. The lower end of the bottom mold 2 is fixedly connected to the base 1. A movable positioning sleeve 6 is fitted on the bottom mold 2. The upper end of the movable positioning sleeve 6 is bent outward to form a linkage part 7. Several lifting rods 8 are fixedly connected to the lower end of the movable positioning sleeve 6. The base 1 is provided with movable holes 9 for the lifting rods 8 to move through. After the lower end of the lifting rod 8 passes through the movable holes 9, a lifting plate 10 is fixedly connected. The upper end of the top mold 4 is fixedly connected to the top seat 3. The top mold 4 has a mold cavity 1 inside. 1. The lower end face of the top mold 4 is provided with an insertion port 12 for the bottom mold 2 to extend into the mold cavity 11. The upper end of the mold cavity 11 is provided with guide surfaces 13 around its perimeter. The top mold 4 is provided with several mounting ports 14 around its perimeter. Side pressure rods 15 are inserted into the mounting ports 14 respectively. One end of the side pressure rod 15 is provided with an arc-shaped guide surface 13. The mounting port 14 connects to the lower end of the arc-shaped guide surface 13, and the other end is fixedly connected to a limiting plate 16. The pressure mold 5 is located inside the mold cavity 11. Several springs 17 are fixedly connected to the upper end of the pressure mold 5. The springs 17 are fixedly connected to the top seat 3. The wheel rim preliminary processing part that needs to be flanged is placed on the bottom mold 2. The wheel rim preliminary processing part on the bottom mold 2 is positioned by the movable positioning sleeve 6. The top seat 3 is driven to descend by a hydraulic cylinder or other driving mechanism, which drives the top mold 4 and the pressure mold 5 to descend. The pressure mold 5 first contacts the wheel rim preliminary processing part and gradually presses the wheel rim preliminary processing part on the bottom mold 2. Simultaneously, the top mold 4 descends and presses down on the linkage 7, causing the movable positioning sleeve 6 to descend, and the wheel rim pre-processed part enters the top mold 4. The spring 17 is compressed, and the top mold 4 continues to descend. When the part of the wheel rim pre-processed part that needs to be flanged at the top approaches the lower end of the arc-shaped guide surface 13, the side pressure rod 15 is driven inward by a hydraulic cylinder or other driving mechanism, at which point the top mold 4 stops descending. The side pressure rod 15 presses the wheel rim pre-processed part inward, then retracts, and the top mold 4 continues to descend a certain distance. The side pressure rod 15 then presses the wheel rim pre-processed part inward again, repeating this process 3-4 times until the top mold 4 is completely lowered into place, and the upper part of the wheel rim is flanged.

[0015] Furthermore, several guide rods 25 are fixedly connected around the upper end of the die 5. The top die 4 is provided with guide holes 26 for the guide rods 25 to move through, and the top seat 3 is provided with guide channels 18 for the upper ends of the guide rods 25 to move. A push rod 19 is fixedly connected to the middle of the upper end of the die 5. The top die 4 and the top seat 3 are respectively provided with through holes 20 for the push rod 19 to move through. The diameter of the guide hole 26 is smaller than the diameter of the guide channel 18, and the diameter of the guide hole 26 is larger than the diameter of the upper end of the guide rod 25. The guide rods 25 make the movement of the die 5 more stable, and the die 5 can accurately cooperate with the bottom die 2 to fix the rim, so that the rim is stable and accurately positioned during the stamping and flanging process. By using a cylinder or other driving mechanism to drive the push rod 19, the rim that is stuck in the die cavity 11 after stamping can be pushed out of the die cavity 11, which facilitates the unloading of the rim from the die cavity 11. After the top seat 3 rises, the upper end of the guide rod 25 can be hung on the top mold 4, reducing the tension from the pressure mold 5 on the spring 17.

[0016] Furthermore, a mounting plate 21 is provided on one side of the base 1, and a vertical slide rail 22 is provided on the mounting plate 21. A slider 23 is provided on the vertical slide rail 22. The base 1 is fixedly connected to the mounting plate 21, and the slider 23 is fixedly connected to the top seat 3. The cooperation between the vertical slide rail 22 and the slider 23 on the side of the mold makes the descent process of the top seat 3, the top mold 4, and the pressure mold 5 more stable, further reducing molding errors.

[0017] Furthermore, a spring is fitted onto the side pressure rod 15, and the spring is clamped between the limiting plate 16 and the top mold 4. Here, the spring allows the side pressure rod 15 to automatically return to its original position.

[0018] Furthermore, the number of side pressure rods 15 is at least three, and all side pressure rods 15 are distributed in a circumferential array around the top mold 4. The side pressure rods 15 apply force evenly from all around the rim to guide the rim edge to bend and form a flange.

[0019] Furthermore, a spring is fitted onto the lifting rod 8, and the spring is clamped between the base 1 and the movable positioning sleeve 6. This spring allows the movable positioning sleeve 6 to automatically move to its uppermost position on the bottom mold 2 without external force.

[0020] It is worth mentioning that the technical features of hydraulic cylinders, gas springs, etc. involved in this utility model patent application should be regarded as prior art. The specific structure, working principle, and possible control methods and spatial arrangement of these technical features can be adopted by conventional choices in the field and should not be regarded as the inventive point of this utility model patent. This utility model patent will not be further elaborated in detail.

[0021] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make many modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning or limited experimentation on the basis of the prior art should be within the scope of protection defined by the claims.

Claims

1. A rim flanging forming device, characterized in that, The device includes a base, a bottom mold, a top seat, a top mold, and a pressing mold. The lower end of the bottom mold is fixedly connected to the base. A movable positioning sleeve is fitted on the bottom mold. The upper end of the movable positioning sleeve is bent outward to form a linkage part. Several lifting rods are fixedly connected to the lower end of the movable positioning sleeve. The base has movable holes for the lifting rods to pass through. After the lower end of the lifting rod passes through the movable holes, a lifting plate is fixedly connected. The upper end of the top mold is fixedly connected to the top seat. The top mold has a mold cavity inside. The lower end face of the top mold has an insertion port for the bottom mold to extend into the mold cavity. The upper end of the mold cavity has guide surfaces around its perimeter. Several mounting ports are provided around the top mold. Side pressure rods are inserted into the mounting ports. One end of the side pressure rod has an arc-shaped guide surface, and the other end is fixedly connected to a limit plate. The pressing mold is located inside the mold cavity. Several springs are fixedly connected to the upper end of the pressing mold. The springs are fixedly connected to the top seat.

2. The rim flanging forming device as described in claim 1, characterized in that, Several guide rods are fixedly connected around the upper end of the mold. The top mold has guide holes for the guide rods to move through. The top seat has guide channels for the upper ends of the guide rods to move. A push rod is fixedly connected to the middle of the upper end of the mold. The top mold and the top seat have through holes for the push rod to move through. The diameter of the guide hole is smaller than the diameter of the guide channel, and the diameter of the guide hole is larger than the diameter of the upper end of the guide rod.

3. The rim flanging forming device as described in claim 1, characterized in that, The base has a mounting plate on one side, a vertical slide rail on the mounting plate, and a slider on the vertical slide rail. The base is fixedly connected to the mounting plate, and the slider is fixedly connected to the top seat.

4. The rim flanging forming device as described in claim 1, characterized in that, A spring is fitted onto the side pressure rod, and the spring is clamped between the limiting plate and the top mold.

5. The rim flanging forming device as described in claim 4, characterized in that, The number of side pressure rods is at least three, and all side pressure rods are distributed in a circular array around the top mold.

6. The rim flanging forming device as described in claim 1, characterized in that, A spring is fitted onto the lifting rod, and the spring is clamped between the base and the movable positioning sleeve.

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