Bulging die

Abstract

The utility model relates to a bulging die. The bulging die comprises a base; a guide column is arranged between the driving part and the base, so that the driving part is arranged on the base in a sliding mode in the length direction of the guide column; the bulging parts are arranged outside the driving part in a surrounding manner; each bulging piece is movably arranged on the base and makes contact with the driving piece through a guide inclined face, the guide inclined faces intersect with the extending line of the driving piece in the sliding direction, and in the process that the driving piece slides in the direction close to the base relative to the base, the driving piece is driven by the guide inclined faces to stretch out of the driving piece in the sliding direction. And the guide inclined surface drives the plurality of bulging pieces to expand outwards. According to the bulging die, the driving piece drives the bulging pieces to move in the radial direction, so that workpieces arranged outside the bulging pieces in a sleeving mode are shaped, the shaping operation of the workpieces is convenient, and the shaping effect is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipe shaping, and in particular relates to a bulging die. Background Art

[0002] For the processing of aluminum alloy workpieces with hollow inner cavities, after the workpieces are cut, they may be deformed due to various reasons, or for some workpieces with high dimensional accuracy requirements, the workpieces need to be further shaped after cutting to further improve the dimensional accuracy of the workpieces. For example, for rectangular workpieces with hollow inner cavities, the existing shaping method is to manually knock on the four sides of the rectangular workpiece, which is not only time-consuming and labor-intensive, but the shaping effect depends entirely on the operator's knocking experience and is difficult to control. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a bulging die with convenient shaping operation and good shaping effect in view of the deficiencies of the prior art.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A bulging die, comprising:

[0006] Base;

[0007] A driving member, wherein a guide column is arranged between the driving member and the base, so that the driving member is slidably arranged on the base along the length direction of the guide column;

[0008] A plurality of bulging members are arranged around the driving member; each of the bulging members is movably arranged on the base, and each of the bulging members is in contact with the driving member through a guiding slope, the guiding slope intersects with an extension line of the sliding direction of the driving member, and when the driving member slides relative to the base toward the base, the guiding slope drives the plurality of bulging members to expand outward.

[0009] In some embodiments, each of the bulging members is slidably connected to the driving member along the length direction of the guiding inclined surface.

[0010] In some specific embodiments, one of each of the bulging member and the driving member is provided with a slide groove extending along the length direction of the guiding inclined surface, and the other member is provided with a guide rail capable of being inserted into and sliding in the slide groove.

[0011] In some embodiments, one of the bulging member and the driving member is provided with the guiding inclined surface, and the other member is provided with a matching surface capable of matching with the guiding inclined surface.

[0012] In some embodiments, the bulging die further includes an elastic member disposed between the base and the driving member, and the elastic member enables the driving member to slide relative to the base in a direction away from the base.

[0013] In some specific embodiments, the elastic member is a spring sleeved on the guide post.

[0014] In some specific embodiments, the driving member is provided with a slot at a position corresponding to the guide column, and a first through hole is provided on the base at a position corresponding to the guide column. One end of the guide column passes through the first through hole and is inserted into the slot and fixedly connected to the driving member. A radially enlarged first blocking portion is formed at the other end of the guide column, and the first blocking portion is used to prevent the guide column from detaching from the base. The elastic member is located in the slot.

[0015] In some specific embodiments, the guide column is a bolt.

[0016] In some embodiments, each of the expansion members is connected to the base via a connecting member, a second through hole is opened on the base at a position corresponding to the connecting member, one end of the connecting member passes through the second through hole and is fixedly connected to the expansion member, a second radially enlarged blocking portion is formed at the other end of the connecting member, the second blocking portion is used to prevent the connecting member from detaching from the base, and a radial sliding gap of the connecting member is formed between the second through hole and the connecting member, so that the multiple expansion members can expand outward or tighten inward.

[0017] In some specific embodiments, the connecting member is a bolt.

[0018] In some specific embodiments, there are four bulging members, and the four bulging members are arranged to form a rectangle.

[0019] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0020] The bulging die of the utility model drives a plurality of bulging parts to move in the radial direction through a driving part, so that the workpiece sleeved outside the bulging part is shaped, the shaping operation of the workpiece is convenient, and the shaping effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of a bulging die of a representative embodiment of the utility model;

[0022] Figure 2 for Figure 1 Schematic diagram of the structure of the bulging die after the workpiece is installed;

[0023] Figure 3 for Figure 1 Exploded view of the bulging die;

[0024] Figure 4 for Figure 1 A schematic diagram of the structure of a driving part of a bulging die;

[0025] Figure 5 for Figure 4 A side view of a driving member;

[0026] Figure 6 for Figure 1 A schematic diagram of the structure of a bulging component of a bulging die;

[0027] Figure 7 for Figure 6 Bottom view of

[0028] In the figure: 1. base; 2. driving member; 3. expansion member; 4. guide column; 5. elastic member; 6. connecting member; 7. first through hole; 8. second through hole; 9. slot; 10. guide slope; 11. slide groove; 12. guide rail; 13. workpiece. DETAILED DESCRIPTION

[0029] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0030] like Figures 1 to 7 The bulging die shown is used for shaping a workpiece 13 having a hollow inner cavity.

[0031] The bulging mold includes a base 1, a driving member 2, a plurality of bulging members 3 and an elastic member 5, wherein a guide column 4 is arranged between the driving member 2 and the base 1, so that the driving member 2 is slidably arranged on the base 1 along the length direction of the guide column 4; a plurality of bulging members 3 are arranged outside the driving member 2, each bulging member 3 is movably arranged on the base 1, and each bulging member 3 is in contact with the driving member 2 through a guide slope 10, and the guide slope 10 intersects with the sliding direction extension line of the driving member 2, and when the driving member 2 slides relative to the base 1 in a direction close to the base 1, the guide slope 10 drives the plurality of bulging members 3 to expand outward; the elastic member 5 is arranged between the base 1 and the driving member 2, and the elastic member 5 enables the driving member 2 to slide relative to the base 1 in a direction away from the base 1.

[0032] See also Figure 2 When the workpiece 13 is shaped, the workpiece 13 is sleeved outside the bulging member 3, so that the driving member 2 slides relative to the base 1 toward the base 1, and the multiple bulging members 3 expand outward to achieve the shaping of the workpiece 13.

[0033] Each bulging member 3 is slidably connected to the driving member 2 along the length direction of the guiding slope 10. Specifically, each bulging member 3 is provided with a slide groove 11 extending along the length direction of the guiding slope 10, and the driving member 2 is provided with a guide rail 12 that can be inserted into the slide groove 11 and slide in the slide groove 11.

[0034] See also Figures 4-5 The guide slope 10 is arranged on the driving member 2 , and each bulging member 3 is provided with a matching surface that can match with the guide slope 10 .

[0035] A slot 9 is formed on the driving member 2 at a position corresponding to the guide column 4, and a first through hole 7 is formed on the base 1 at a position corresponding to the guide column 4. One end of the guide column 4 passes through the first through hole 7 and is inserted into the slot 9 and is fixedly connected to the driving member 2. A first radially enlarged blocking portion is formed on the other end of the guide column 4. The first blocking portion is used to prevent the guide column 4 from separating from the base 1. The elastic member 5 is a spring sleeved on the guide column 4, and the spring is located in the slot 9.

[0036] Each bulging member 3 is connected to the base 1 through a connecting member 6. A second through hole 8 is provided on the base 1 at a position corresponding to the connecting member 6. One end of the connecting member 6 passes through the second through hole 8 and is fixedly connected to the bulging member 3. A second blocking portion that becomes radially larger is formed at the other end of the connecting member 6. The second blocking portion is used to prevent the connecting member 6 from being separated from the base 1. A radial sliding gap of the connecting member 6 is formed between the second through hole 8 and the connecting member 6, so that multiple bulging members 3 can expand outward or tighten inward. This "outward expansion" refers to the expansion of multiple bulging members 3 in the direction away from the vertical center line of the driving member 2; "inward tightening" refers to the tightening of multiple bulging members 3 in the direction close to the vertical center line of the driving member 2.

[0037] In this example, there are two guide columns 4, which are bolts; there are four connecting members 6, which are bolts; there are also four bulging members 3, and the four bulging members 3 are arranged to form a rectangle.

[0038] In other embodiments, the plurality of bulging members 3 may also be arranged in a cylindrical shape or other shapes, which are specifically selected according to the shape of the workpiece 13 .

[0039] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly. They cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A bulging die, characterized in that: include: Base; A driving member, wherein a guide column is arranged between the driving member and the base, so that the driving member is slidably arranged on the base along the length direction of the guide column; A plurality of bulging members are arranged around the driving member; each of the bulging members is movably arranged on the base, and each of the bulging members is in contact with the driving member through a guiding slope, the guiding slope intersects with an extension line of the sliding direction of the driving member, and when the driving member slides relative to the base toward the base, the guiding slope drives the plurality of bulging members to expand outward.

2. The bulging die according to claim 1, characterized in that: Each of the bulging members is slidably connected to the driving member along the length direction of the guiding inclined surface.

3. The bulging die according to claim 2, characterized in that: One of the bulging member and the driving member is provided with a slide groove extending along the length direction of the guiding inclined surface, and the other member is provided with a guide rail capable of being inserted into and sliding in the slide groove.

4. The bulging die according to claim 1, characterized in that: One of the bulging member and the driving member is provided with the guiding inclined surface, and the other member is provided with a matching surface capable of matching with the guiding inclined surface.

5. The bulging die according to any one of claims 1 to 4, characterized in that: The bulging die further comprises an elastic member arranged between the base and the driving member, and the elastic member enables the driving member to slide relative to the base in a direction away from the base.

6. The bulging die according to claim 5, characterized in that: The elastic member is a spring sleeved on the guide column.

7. The bulging die according to claim 5, characterized in that: The driving member is provided with a slot at a position corresponding to the guide column, and the base is provided with a first through hole at a position corresponding to the guide column. One end of the guide column passes through the first through hole and is inserted into the slot and is fixedly connected to the driving member. A radially enlarged first blocking portion is formed at the other end of the guide column, and the first blocking portion is used to prevent the guide column from detaching from the base. The elastic member is located in the slot.

8. The bulging die according to claim 7, characterized in that: The guide column is a bolt.

9. The bulging die according to claim 1, characterized in that: Each of the expansion members is connected to the base via a connecting member, a second through hole is provided on the base at a position corresponding to the connecting member, one end of the connecting member passes through the second through hole and is fixedly connected to the expansion member, a second radially enlarged blocking portion is formed at the other end of the connecting member, the second blocking portion is used to prevent the connecting member from detaching from the base, a radial sliding gap of the connecting member is formed between the second through hole and the connecting member, so that the multiple expansion members can expand outward or tighten inward.

10. The bulging die according to claim 9, characterized in that: The connecting member is a bolt; and / or, there are four bulging members, and the four bulging members are arranged to form a rectangle.

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