Bulging die
By designing an swelling mold in the swelling device, and using the swelling sheet to insert and expand the swelling gap, the problem that the workpiece cannot be effectively expanded is solved, and the comprehensive swelling of the inner wall of the workpiece is achieved and the swelling quality is improved.
Patent Information
- Application Number
- CN202421752899.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-23
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-07-23
AI Technical Summary
During the expansion process, the existing expansion device has the gap formed between adjacent expansion blocks, and the workpiece is located in the gap part and cannot be effectively expanded, affecting the expansion effect.
A swelling mold is designed, including a swelling head, a number of swelling blocks and a number of swelling pieces. The swelling piece is inserted into the swelling gap and expands outward under the push of the swelling head, flush with the surface of the swelling block, thereby swelling the workpiece in a comprehensive manner.
Through the design of the swelling mold, the entire inner wall of the workpiece can be effectively expanded, improving the quality and effect of swelling.
Smart Images
Figure CN222830536U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bulging devices, in particular to a bulging die. Background Art
[0002] Bulging is a common processing method in the processing of annular thin-walled parts. The bulging device includes a bulging head and a plurality of bulging blocks. Inserting the bulging head between the bulging blocks can make the bulging blocks spread outward, and then expand the thin-walled workpiece wrapped outside to achieve the purpose of shaping. Since the bulging blocks spread out from each other, a gap will inevitably be formed between the two adjacent bulging heads after expansion. The part of the thin-walled part located in this gap will not be expanded, and thus a good bulging effect cannot be achieved. Utility Model Content
[0003] The utility model aims to provide a bulging die, which can bulge a workpiece at a bulging gap, thereby better ensuring the bulging quality.
[0004] The embodiments of the present invention are implemented by the following technical solutions:
[0005] A bulging die comprises a bulging head, a plurality of bulging blocks and a plurality of bulging sheets; the plurality of bulging blocks are distributed in a ring shape; the bulging head is arranged in conjunction with the plurality of bulging blocks so that when the bulging head is extended between the plurality of bulging blocks, the plurality of bulging blocks spread outward; there is a bulging gap between two adjacent bulging blocks; the bulging sheets are arranged in conjunction with the bulging head so that when the bulging sheets are inserted into the bulging gaps, the bulging sheets bulge outwards and are flush with the surfaces of the bulging blocks; each of the bulging gaps corresponds to one bulging sheet.
[0006] Furthermore, it also includes an annular plate; a number of the expansion blocks are slidably arranged on the annular plate and distributed along the circumference of the annular plate; the inner wall of the expansion block and the outer wall of the expansion head are arranged in a slope shape in cooperation with each other, so that when the expansion head extends into the interior of the number of the expansion blocks, the expansion head pushes the expansion blocks to open outward.
[0007] Furthermore, it also includes a connecting frame; the connecting frame has a plurality of connecting parts radiating from the middle to the surrounding areas; the bulging sheet and the connecting parts are provided with dovetail grooves and dovetail sliders to cooperate with each other, so that the bulging sheet can slide relative to the connecting parts; each of the connecting parts corresponds to one bulging sheet; the bulging sheet is also provided with an inclined surface to cooperate with the bulging head.
[0008] Furthermore, the annular plate is provided with a sliding block in cooperation with each of the bulging blocks; and the bulging blocks are provided with sliding grooves in cooperation with the sliding blocks, so that the bulging blocks can slide relative to the sliding blocks.
[0009] Furthermore, each of the expansion blocks is provided with a return spring so that a plurality of the expansion blocks can be retracted toward the middle when the expansion head is retracted.
[0010] Furthermore, a notch is provided at one side of the front end of the bulging sheet that cooperates with the bulging head, so that the width of the front end of the bulging sheet is smaller than the width of the rear end.
[0011] Furthermore, each of the bulging sheets is provided with a return spring so that the bulging sheet can be retracted toward the middle when being taken out of the bulging gap.
[0012] When the bulging die of the utility model is used, a plurality of bulging blocks are first gathered toward the middle, so that the annular workpiece can be smoothly sleeved on the outside of a plurality of bulging heads. Subsequently, the bulging head is pushed between the plurality of bulging blocks, so that the plurality of bulging blocks gradually spread out to the surroundings, thereby expanding the workpiece to the surroundings. When the plurality of bulging blocks spread out, a bulging gap is formed between adjacent bulging blocks. At this time, a plurality of bulging sheets are each inserted into a bulging gap and pushed into the bulging gap. In this process, the bulging sheets are gradually spread out to the surroundings under the pushing of the bulging head, thereby bulging the portion of the workpiece located in the bulging gap.
[0013] The bulging die of the utility model can bulge the entire inner wall of the workpiece, thereby better ensuring the bulging effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0015] Figure 1 A schematic diagram of the structure of the bulging die provided by the utility model;
[0016] Figure 2 It is a schematic diagram of the cooperation between the bulging block and the workpiece;
[0017] Figure 3 It is a schematic diagram of the expansion of the bulging block;
[0018] Figure 4 It is a schematic diagram of the cooperation between the bulging sheet, the bulging head and the workpiece;
[0019] Figure 5 It is a schematic diagram of the cooperation between the sliding block and the bulging block.
[0020] Icons: 1-bulging head, 2-bulging block, 3-bulging sheet, 4-bulging gap, 5-annular plate, 6-connecting piece, 7-sliding block, 8-notch, 9-workpiece. DETAILED DESCRIPTION
[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0022] Example:
[0023] like Figure 1-Figure 5 As shown, the utility model provides a bulging die, including a bulging head 1, a plurality of bulging blocks 2 and a plurality of bulging sheets 3. The plurality of bulging blocks 2 are distributed in a ring shape. The bulging head 1 is arranged in conjunction with the plurality of bulging blocks 2, so that when the bulging head 1 extends between the plurality of bulging blocks 2, the plurality of bulging blocks 2 spread out to the surroundings. Commonly, both the bulging blocks 2 and the bulging head 1 are provided with inclined surfaces. When the bulging head 1 pushes the bulging blocks 2, the bulging head 1 pushes the bulging blocks 2 to the surroundings. There is a bulging gap 4 between two adjacent bulging blocks 2. The bulging sheet 3 is arranged in conjunction with the bulging head 1 in an inclined shape, so that when the bulging sheet 3 is inserted into the bulging gap 4, the bulging sheet 3 expands outwards under the push of the bulging head 1 and is flush with the surface of the bulging block 2. Each bulging gap 4 corresponds to a bulging sheet 3.
[0024] When the bulging die of the utility model is used, a plurality of bulging blocks 2 are first gathered to the middle, so that the annular workpiece 9 can be smoothly sleeved on the outside of a plurality of bulging heads 1. Subsequently, the bulging head 1 is pushed between the plurality of bulging blocks 2, so that the plurality of bulging blocks 2 gradually spread out to the surroundings, thereby expanding the workpiece 9 to the surroundings. When the plurality of bulging blocks 2 spread out, a bulging gap 4 is formed between adjacent bulging blocks 2. At this time, a plurality of bulging sheets 3 are each inserted into a bulging gap 4 and pushed into the bulging gap 4. In this process, the bulging sheets 3 are gradually spread out to the surroundings under the pushing of the bulging head 1, thereby bulging the portion of the workpiece 9 located in the bulging gap 4.
[0025] The bulging die of the utility model can bulge the entire inner wall of the workpiece 9, thereby better ensuring the bulging effect.
[0026] In this embodiment, an annular plate 5 is also included. A plurality of bulging blocks 2 are slidably arranged on the annular plate 5 and distributed along the circumference of the annular plate 5. A through hole is arranged in the middle of the annular plate 5 so that the bulging head 1 can be extended and then inserted between the plurality of bulging blocks 2. The inner wall of the bulging block 2 and the outer wall of the bulging head 1 are arranged in a slope shape in cooperation with each other so that when the bulging head 1 is extended into the plurality of bulging blocks 2, the bulging head 1 pushes the bulging blocks 2 to open outward. The annular plate 5 serves as a support for the bulging blocks 2, aggregates the plurality of bulging blocks 2 together, and thereby causes the plurality of bulging blocks 2 to expand or gather at the same time.
[0027] In this embodiment, a connecting frame is also included. Figure 1 and Figure 4 As shown, the connecting frame has a number of connecting members 6 radiating from the middle to the surroundings. The bulging sheet 3 and the connecting member 6 are provided with dovetail grooves and dovetail sliders that cooperate with each other so that the bulging sheet 3 can slide relative to the connecting member 6. At the same time, the cooperation of the dovetail groove and the dovetail slider allows the bulging sheet 3 and the connecting member 6 to only slide relative to each other without falling off. The dovetail groove and the dovetail slider are arranged on the surface where the bulging sheet 3 and the connecting member 6 meet. Since its structure is relatively conventional, it will not be repeated in the specification. Each connecting member 6 corresponds to a bulging sheet 3. The bulging sheet 3 is also provided with an inclined surface in cooperation with the bulging head 1.
[0028] Since several bulging sheets 3 are connected together by the connecting frame, when several bulging blocks 2 are expanded, all bulging sheets 3 can be inserted into the bulging gap 4 at one time, thereby improving the insertion efficiency of the bulging sheets 3. At the same time, pushing the connecting frame can synchronously squeeze several bulging sheets 3 into the bulging gap 4, thereby improving the efficiency. The synchronization of pushing is also guaranteed. After the bulging is completed, the connecting frame can be withdrawn to pull out several bulging sheets 3 from the bulging gap 4.
[0029] In this embodiment, the annular plate 5 is provided with a sliding block 7 in cooperation with each bulging block 2. The bulging block 2 is provided with a sliding groove in cooperation with the sliding block 7, so that the bulging block 2 can slide relative to the sliding block 7. The sliding block 7 is embedded in the sliding groove, thereby making the sliding of the bulging block 2 relative to the annular plate 5 more stable.
[0030] In this embodiment, each bulging block 2 is provided with a return spring so that the bulging blocks 2 can be retracted to the middle when the bulging head 1 is retracted. The return spring enables the bulging head 1 to be retracted in time, thereby facilitating operation. Similarly, each bulging sheet 3 is provided with a return spring so that the bulging sheet 3 can be retracted to the middle when it is taken out of the bulging gap 4.
[0031] In this embodiment, a notch 8 is provided on one side of the front end of the bulging sheet 3 that matches the bulging head 1, so that the width of the front end of the bulging sheet 3 is smaller than the width of the rear end. Figure 4As shown, when the bulging sheet 3 is initially inserted into the bulging groove, the presence of the notch 8 prevents the bulging sheet 3 from expanding too much, thereby ensuring that the rear portion of the bulging sheet 3 can be smoothly inserted into the bulging gap 4 .
[0032] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A bulging die, characterized in that: It includes a bulging head, a plurality of bulging blocks and a plurality of bulging sheets; the plurality of bulging blocks are distributed in a ring shape; the bulging head is arranged in conjunction with the plurality of bulging blocks so that when the bulging head is extended between the plurality of bulging blocks, the plurality of bulging blocks spread outward; there is a bulging gap between two adjacent bulging blocks; the bulging sheet is arranged in conjunction with the bulging head so that when the bulging sheet is inserted into the bulging gap, the bulging sheet bulges outward and is flush with the surface of the bulging block; each bulging gap corresponds to one bulging sheet.
2. The bulging die according to claim 1, characterized in that: It also includes an annular plate; a number of expansion blocks are slidably arranged on the annular plate and distributed along the circumference of the annular plate; the inner wall of the expansion block and the outer wall of the expansion head are arranged in a slope shape in cooperation with each other, so that when the expansion head extends into the interior of a number of the expansion blocks, the expansion head pushes the expansion blocks to open outward.
3. The bulging die according to claim 2, characterized in that: It also includes a connecting frame; the connecting frame is provided with a plurality of connecting parts radiating from the middle to the surrounding areas; the bulging sheet and the connecting parts are provided with dovetail grooves and dovetail sliders to cooperate with each other, so that the bulging sheet can slide relative to the connecting parts; each of the connecting parts corresponds to one bulging sheet; the bulging sheet is also provided with an inclined surface to cooperate with the bulging head.
4. The bulging die according to claim 3, characterized in that: The annular plate is provided with a sliding block in cooperation with each of the bulging blocks; the bulging blocks are provided with a sliding groove in cooperation with the sliding blocks, so that the bulging blocks can slide relative to the sliding blocks.
5. The bulging die according to claim 4, characterized in that: Each of the expansion blocks is provided with a return spring so that a plurality of the expansion blocks can be retracted toward the middle when the expansion head is retracted.
6. The bulging die according to claim 5, characterized in that: A notch is provided on one side of the front end of the bulging sheet that cooperates with the bulging head, so that the width of the front end of the bulging sheet is smaller than the width of the rear end.
7. The bulging die according to claim 6, characterized in that: Each of the bulging sheets is provided with a return spring so that the bulging sheet can be retracted toward the middle when being taken out of the bulging gap.