A sleeve cold-die forming die

Abstract

The utility model discloses a kind of axle sleeve cold-hubbing forming die, belong to forming die technical field, including fixed base, fixed base top is fixed with forming die seat, forming die seat top is provided with forming cavity, forming cavity inside is equipped with multiple sleeve-connected forming die ring, both sides of fixed base top are provided with sliding slot, two sliding slot interiors are equipped with sliding block, two sliding blocks top are fixed with support plate, support plate top is fixed with multiple equidistant distribution's locating block, the locating groove same as locating block quantity is provided with in each forming die ring top, multiple locating grooves are connected. With multiple sleeve-connected forming die ring, forming die ring and forming cavity are matched to build forming cavity, realize bearing processing, and push support plate drives locating block to move out from forming die ring top locating groove, dismounting part forming die ring can adjust forming cavity volume, can quickly adapt different needs, simple operation, precision is guaranteed, can also greatly shorten specification switching time, improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of molding die technology, specifically to a bushing cold heading molding die. Background Technology

[0002] Currently, electric bicycles have become an important mode of transportation due to their efficiency and environmental friendliness. Especially after the implementation of new regulations for electric bicycles, the performance of their human-powered drive systems has received even more attention. In the structure of an electric bicycle, the human-powered drive system transmits the power applied by the rider to the pedals through the bottom bracket, chainring, and chain to the drive wheel, propelling the bicycle forward. Therefore, the assembly structure of the chainring and bottom bracket in the human-powered drive system of an electric bicycle has a significant impact on its performance. Cold heading dies for bushings are used to deform metal blanks at room temperature through upsetting, transforming them into bushing-like parts. They offer advantages such as high production efficiency, high material utilization, and good product quality. The metal blank is placed into the die cavity, and the punch of the cold heading equipment moves downwards under pressure, upsetting the blank. Under the action of the punch and die, the blank undergoes plastic deformation, gradually filling the die cavity, and ultimately forming a bushing of the desired shape and size. For example, during the cold heading of a universal joint bushing, after the blank enters the die, the bottom is held up by the rear punch and the top is squeezed by the front punch. After multiple cold heading processes in the die, the blank is finally formed.

[0003] For example, a bushing molding die with prior art publication number CN220903985U can achieve the following: by placing the lower half of the die on the worktable, before demolding, a servo motor is started to control multiple vibration blocks to knock on the lower half of the die, so that the finished bushing is loosened in the injection groove, thereby facilitating the demolding of the bushing, improving the molding quality and demolding efficiency of the bushing, avoiding damage to the finished product by violent demolding, and improving the functionality of the bushing molding die.

[0004] However, the above-mentioned existing technologies still have the following problems when used: the forming cavity size of traditional bushing cold heading forming molds is uniform. When different sizes of bearings need to be produced, the operator needs to stop the machine first and then replace it with a suitable cold heading forming mold. Replacing the mold takes a long time and seriously affects production efficiency. Utility Model Content

[0005] To address this issue, this utility model provides a bushing cold heading forming mold to solve the problem of low production efficiency caused by the single size of the forming mold in the prior art, which makes it impossible to quickly change molds to produce bearings of different sizes.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A bushing cold heading mold includes a fixed base, a forming mold base fixedly mounted on the top of the fixed base, a forming cavity opened on the top of the forming mold base, a plurality of sleeved forming mold rings arranged inside the forming cavity, sliding grooves opened on both sides of the top of the fixed base, a slider arranged inside each of the two sliding grooves, a support plate fixedly mounted on the top of each of the two sliders, a plurality of equally spaced positioning blocks fixedly mounted on the top of the support plate, and a number of positioning slots equal to the number of positioning blocks opened on the top of each forming mold ring, the plurality of positioning slots being interconnected, and the positioning blocks being inserted into the positioning slots.

[0007] Furthermore, the inner walls of both slides are provided with multiple equally spaced threaded holes, and both slides are threaded with first fastening bolts that are compatible with the threaded holes.

[0008] Furthermore, each molding ring has multiple insert rods fixedly arranged in a ring array at its bottom. The bottom wall of the molding cavity has slots that are compatible with the insert rods. The insert rods are inserted into the slots, which improves the stability of the molding ring installation.

[0009] Furthermore, a pentagonal block is fixedly provided at the bottom of the molding mold base, and a pentagonal groove adapted to the pentagonal block is provided at the top of the fixed base. The pentagonal block is inserted into the pentagonal groove. By using the cooperation between the pentagonal block and the pentagonal groove, the connection between the molding mold base and the fixed base can be strengthened, and it is also convenient for workers to quickly position the mold and improve the installation efficiency.

[0010] Furthermore, mounting holes are provided on both the front and rear sides of the fixing base, and a second fastening bolt is provided inside each mounting hole. The second fastening bolt is detachably fixed to the pentagonal block. By fixing the pentagonal block with multiple second fastening bolts, the installation firmness of the molding base can be improved, and disassembly can be facilitated.

[0011] Furthermore, each molding ring has an arc-shaped groove at its top, and a lever is fixed inside the arc-shaped groove. The lever makes it easy for workers to quickly pick up the molding ring, making the operation very convenient. This can shorten the disassembly time and thus improve production efficiency.

[0012] Furthermore, each of the two support plates has a connecting groove adapted to the positioning block on the side near the positioning block. One end of the positioning block is inserted into the connecting groove and is detachably connected to the support plate. The design of the connecting groove makes it easy for workers to quickly install the positioning block.

[0013] Furthermore, the top of the fixing base is provided with multiple fixing holes, which are evenly distributed on the fixing base. The design of multiple fixing holes can effectively improve the stability of the fixing base during use.

[0014] This utility model has the following advantages: This invention features multiple sleeveable molding rings within the molding cavity of the molding mold base. The molding cavity is constructed by the cooperation of the molding rings and the molding cavity, enabling bearing processing. If bearings of different diameters need to be produced, there is no need to change the entire mold. Simply push the support plate to move the positioning block out of the positioning groove at the top of the molding ring, and disassemble part of the molding ring to adjust the volume of the molding cavity. This allows for quick adaptation to different needs, simple operation, guaranteed precision, and can significantly shorten the specification changeover time and improve production efficiency.

[0015] The pentagonal blocks and pentagonal grooves make it easy for workers to quickly position the components and improve installation efficiency. At the same time, the bolt fixing method not only improves the firmness of the connection between the molding mold base and the fixed base, but also facilitates subsequent disassembly and maintenance, bringing great convenience to inspection and maintenance. Attached Figure Description

[0016] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0017] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0018] Figure 1 A schematic diagram of the overall structure of this utility model; Figure 2 A schematic diagram showing the separation of the molding mold base and the fixing base provided by this utility model; Figure 3 This is a schematic diagram showing the separation of the molding die ring and the molding die base provided by this utility model; Figure 4 This is a partial schematic diagram provided for this utility model; Figure 5 A schematic diagram showing the separation of the support plate and the positioning block provided by this utility model.

[0019] In the diagram: 1. Fixed base; 2. Molding mold base; 3. Molding cavity; 4. Molding mold ring; 5. Slide groove; 6. Slider; 7. Support plate; 8. Positioning block; 9. Positioning groove; 10. Threaded hole; 11. First fastening bolt; 12. Insert rod; 13. Slot; 14. Pentagonal block; 15. Pentagonal groove; 16. Mounting hole; 17. Second fastening bolt; 18. Arc-shaped groove; 19. Toggle rod; 20. Connecting groove; 21. Fixed hole. Detailed Implementation

[0020] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. 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 protection scope of this utility model.

[0021] Refer to the instruction manual Figures 1-5 This utility model provides a bushing cold heading forming mold, including a fixed base 1, a forming mold base 2 fixedly mounted on the top of the fixed base 1, a forming cavity 3 opened on the top of the forming mold base 2, a plurality of sleeved forming mold rings 4 inside the forming cavity 3, a sliding groove 5 opened on both sides of the top of the fixed base 1, a slider 6 inside each of the two sliding grooves 5, a support plate 7 fixedly mounted on the top of each of the two sliders 6, a plurality of equally spaced positioning blocks 8 fixedly mounted on the top of the support plate 7, a positioning groove 9 opened on the top of each forming mold ring 4 with the same number as the positioning blocks 8, the plurality of positioning grooves 9 being connected to each other, and the positioning blocks 8 being inserted into the positioning grooves 9.

[0022] Both slides 5 have multiple equally spaced threaded holes 10 on their inner walls. Both sliders 6 are threaded with first fastening bolts 11 that match the threaded holes 10. Both support plates 7 have connecting grooves 20 that match the positioning blocks 8 on the side near the positioning blocks 8. One end of the positioning block 8 is inserted into the connecting groove 20 and is detachably connected to the support plate 7 by bolts. The design of the connecting groove 20 allows the operator to simply insert the positioning block 8 into the connecting groove 20 and then tighten the bolts when installing the positioning block 8, thus facilitating the quick installation and removal of the positioning block 8.

[0023] In practical use, firstly, multiple interlocking forming mold rings 4 are pre-placed inside the forming cavity 3 of the forming mold base 2. The basic forming cavity is constructed by the cooperation of the forming mold rings 4 and the forming cavity 3. During production, the bearing cold heading material is placed into the basic forming cavity. The punch of the cold heading equipment moves downward under pressure to upset the blank and complete the stamping. Under the action of the punch and the basic forming cavity, the bearing cold heading material undergoes plastic deformation and gradually fills the mold cavity, eventually forming a bushing of the required shape and size. In addition, if bearings of different diameters need to be produced, there is no need to replace the entire mold. The operator only needs to loosen the first fastening bolt 11 on the slider 6, push the support plate 7 to move the positioning block 8, and move it out of the positioning groove 9 on the top of the multiple forming mold rings 4 in sequence. Then, by disassembling part of the forming mold rings 4, the actual volume of the forming cavity 3 can be adjusted to quickly adapt to the production needs of different bearings. The operation steps are simple and easy, which can not only ensure the forming accuracy, but also greatly shorten the specification changeover time and effectively improve production efficiency.

[0024] like Figure 2 and Figure 4 As shown, a pentagonal block 14 is fixedly provided at the bottom of the molding mold base 2, and a pentagonal groove 15 adapted to the pentagonal block 14 is provided on the top of the fixing base 1, and the pentagonal block 14 is inserted into the pentagonal groove 15.

[0025] And, as Figure 1 and Figure 2 As shown, mounting holes 16 are provided on both the front and rear sides of the mounting base 1. Each mounting hole 16 is provided with a second fastening bolt 17. The second fastening bolt 17 is detachably fixed together with the pentagonal block 14.

[0026] By using the pentagonal block 14 and the pentagonal groove 15 to cooperate, the connection between the molding mold base 2 and the fixed base 1 can be strengthened. At the same time, it is convenient for workers to quickly position and improve the installation efficiency. The pentagonal block 14 is fixed by multiple second fastening bolts 17, which can not only improve the installation strength of the molding mold base 2, but also facilitate disassembly. In addition, the second fastening bolts 17 are stored inside the mounting hole 16, which can prevent the second fastening bolts 17 from protruding and affecting the appearance.

[0027] Refer to the instruction manual Figure 3 Multiple insert rods 12 arranged in a ring array are fixed at the bottom of each molding ring 4. The bottom wall of the molding cavity 3 is provided with slots 13 that are adapted to the insert rods 12. The insert rods 12 are inserted into the slots 13. The stability of the molding ring 4 can be improved by inserting the insert rods 12 into the slots 13.

[0028] Each molding ring 4 has an arc-shaped groove 18 on its top, and a lever 19 is fixed inside the arc-shaped groove 18. The lever 19 makes it easy for workers to quickly pick up the molding ring 4, which is very convenient to operate and can shorten the disassembly time, thereby improving production efficiency.

[0029] The top of the mounting base 1 has multiple mounting holes 21, which are evenly distributed on the mounting base 1. The design of multiple evenly distributed mounting holes 21 can effectively improve the stability of the mounting base 1 during use.

[0030] Although the present invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A bushing cold-die forming die comprising a fixed seat (1), characterized in that, The top of the fixed base (1) is fixedly provided with a molding mold base (2), the top of the molding mold base (2) is provided with a molding cavity (3), and the molding cavity (3) is provided with a plurality of sleeved molding mold rings (4). The fixed base (1) has a sliding groove (5) on both sides of the top. The two sliding grooves (5) are equipped with sliders (6). The top of the two sliders (6) is fixed with a support plate (7). The top of the support plate (7) is equipped with multiple positioning blocks (8) distributed at equal intervals. The top of each forming mold ring (4) is equipped with the same number of positioning slots (9) as the positioning blocks (8). The multiple positioning slots (9) are connected to each other. The positioning blocks (8) are inserted into the positioning slots (9).

2. The bushing cold-stamping die of claim 1, wherein, The inner walls of the two slides (5) are provided with multiple equally spaced threaded holes (10), and the two sliders (6) are threaded with first fastening bolts (11) that are compatible with the threaded holes (10).

3. The bushing cold-stamping die of claim 1, wherein, Each molding ring (4) has multiple insert rods (12) arranged in a ring array at its bottom. The bottom wall of the molding cavity (3) has slots (13) that are compatible with the insert rods (12). The insert rods (12) are inserted into the slots (13).

4. The bushing cold-stamping die of claim 1, wherein, The bottom of the molding base (2) is fixed with a pentagonal block (14), and the top of the fixed base (1) is provided with a pentagonal groove (15) that matches the pentagonal block (14). The pentagonal block (14) is inserted into the pentagonal groove (15).

5. The bushing cold-stamping die of claim 4, wherein, The mounting base (1) has mounting holes (16) on both the front and rear sides. Each mounting hole (16) has a second fastening bolt (17) inside. The second fastening bolt (17) and the pentagonal block (14) can be detachably fixed together.

6. The bushing cold-stamping die of claim 1, wherein, Each molding ring (4) has an arc-shaped groove (18) at its top, and a lever (19) is fixedly installed inside the arc-shaped groove (18).

7. The bushing cold-stamping die of claim 1, wherein, Both support plates (7) have a connecting groove (20) adapted to the positioning block (8) on the side near the positioning block (8). One end of the positioning block (8) is inserted into the connecting groove (20) and is detachably connected to the support plate (7).

8. The bushing cold-stamping die of claim 1, wherein, The top of the fixing base (1) is provided with multiple fixing holes (21), which are evenly distributed on the fixing base (1).

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