阅读说明：本技术 一种无铆钉连接的法兰及其加工方法 (Rivet-free connected flange and processing method thereof ) 是由 邱云幸 于 2020-11-02 设计创作，主要内容包括：本发明涉及风管法兰技术领域,一种无铆钉连接的法兰及其加工方法,包括第一型材以及第二型材,所述第一型材的上部与第二型材的上部固定连接,所述第一型材的两侧均向下延伸出外扣板,所述第二型材的下部两侧均向下延伸出内扣板；所述内扣板具有减小与其相邻外扣板间距的趋势。通过装配挤压成型两个型材,安装时,只需将风管的钢板插入两个型材之间,使得每块钢板均被两个面抵触支撑,提高稳定性,从而无需铆钉的加固。(The invention relates to the technical field of air pipe flanges, in particular to a rivet-free connected flange and a processing method thereof, wherein the rivet-free connected flange comprises a first section and a second section, the upper part of the first section is fixedly connected with the upper part of the second section, outer pinch plates extend downwards from both sides of the first section, and inner pinch plates extend downwards from both sides of the lower part of the second section; the inner gusset has a tendency to reduce the distance from its adjacent outer gusset. Through two section bars of assembly extrusion, during the installation, only need insert the steel sheet of tuber pipe between two section bars for every steel sheet all is contradicted by two faces and is supported, improves stability, thereby need not the reinforcement of rivet.)

1. The utility model provides a flange of no rivet connection which characterized in that: the novel steel plate comprises a first section bar and a second section bar (3), wherein the upper part of the first section bar is fixedly connected with the upper part of the second section bar (3), both sides of the first section bar extend downwards to form an outer buckling plate (12), and both sides of the lower part of the second section bar extend downwards to form an inner buckling plate (31);

the gusset (31) has a tendency to reduce the distance from its adjacent gusset (12).

2. A rivetless flange according to claim 1 wherein: one or two of the outer buckle plate (12) and the inner buckle plate (31) are made of elastic materials.

3. A rivetless flange according to claim 2 wherein: the first section bar is composed of a first connecting part (1) and a second connecting part (2) which are respectively arranged at the left side and the right side of the second section bar.

4. A rivetless flange according to claim 3 wherein: the upper parts of the first connecting part (1) and the second connecting part (2) are oppositely provided with clamping grooves (13); and clamping blocks (32) protruding outwards are arranged on both sides of the upper part of the second section bar (3), and the clamping grooves (13) are fixedly connected with the clamping blocks (32) on the same side.

5. A rivetless flange according to claim 4 wherein: the clamping groove (13) is of a step structure with the diameter increasing from outside to inside in the radial direction, and the clamping block (32) is matched with the clamping groove.

6. A rivetless flange according to claim 5 wherein: and a wedge-shaped anchoring part is arranged at the inlet of the clamping groove (13).

7. A rivetless flange according to claim 6 wherein: and the upper parts of the first connecting part (1) and the second connecting part (2) are both provided with heat insulation cavities (11).

8. A rivetless flange according to claim 7 wherein: the bottom of the gusset plate (31) is provided with a barb part (311) extending towards the outside.

9. A rivetless flange according to claim 8 wherein: and the upper part of the second section bar (3) is provided with a hollow groove.

10. A rivetless flange according to claim 9 wherein: the upper end of the inner buckle plate (31) is fixedly connected with a transition piece, and the transition piece is fixedly connected to the bottom of the second section bar (3).

11. A rivetless flange according to claim 10 wherein: the transition piece is of a right-angle structure, and a horizontal bottom surface is formed on one downward side.

12. A method of manufacturing a rivetless flange according to claim 11: the method is characterized in that: a prefabrication stage: manufacturing a first connecting part (1), a second connecting part (2) and a second profile (3) by adopting a die casting method;

and (3) assembling: the clamping blocks (32) on two sides of the upper part of the second section bar (3) are placed into clamping grooves (13) of first connecting parts (1) which are respectively arranged on two sides, and the clamping blocks are arranged left and right for the first time to form an assembly structure of the first connecting parts (1) + the second section bar (3) + the second connecting parts;

and (3) forming: and an extrusion die and an extrusion assembly structure are adopted, so that the clamping block (32) is in interference fit with the clamping groove (13), and the fixation is finished.

Technical Field

The invention belongs to the technical field of air pipe flanges, and particularly relates to a rivet-free connected flange and a processing method thereof.

Background

Along with the increasing popularization of central air conditioners, the demand of ventilation pipelines is also larger and larger, and because the length of the ventilation pipelines is formed by connecting a section of air-saving pipe according to the ventilation distance, flanges are required to be fixedly connected at the joint of the ventilation pipelines. At present, the flange majority that is used for connecting the type tuber pipe of preventing discharging fume is angle steel flange and board flange etc. altogether, wherein the angle steel flange is more general, this flange is formed by the angle steel preparation of unidimensional not, it needs punch on the monolithic flange to make the back campsis, then link together several festivals tuber pipe with the rivet, the stability of angle steel flange is good, can satisfy in the national standard to rectangle tuber pipe what size warp little requirement, but its manufacturing procedure is complicated, it is big man-hour to consume, the cost is also higher, and also very heavy. Especially, the center hole distance of the flange connecting rivet is easy to deviate, thereby bringing a plurality of unexpected difficulties to the on-site butt joint of the air pipe, and leading to low efficiency and increased labor cost.

Therefore, a new flange needs to be developed to solve the problem of inconvenient installation.

Disclosure of Invention

In view of the above situation, the present invention provides a rivet-free flange and a method for manufacturing the same, which overcome the drawbacks of the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: a flange connected without rivets comprises a first section and a second section, wherein the upper part of the first section is fixedly connected with the upper part of the second section, two sides of the first section extend downwards to form an outer buckle plate, and two sides of the lower part of the second section extend downwards to form an inner buckle plate;

the inner gusset has a tendency to reduce the distance from its adjacent outer gusset.

Preferably, one or both of the external buckle plate and the internal buckle plate are made of elastic materials.

Preferably, the first section bar is composed of a first connecting portion and a second connecting portion, and the first connecting portion and the second connecting portion are made of aluminum alloy materials.

Preferably, the upper part of the first connecting part and the upper part of the second connecting part are oppositely provided with clamping grooves; the both sides on second section bar upper portion all are provided with outside convex fixture block, the both sides of second section bar are located to first connecting portion and second connecting portion, and the fixture block fixed connection of draw-in groove rather than the same one side.

Preferably, the clamping groove is of a step structure with an increased radial caliber from outside to inside, and the clamping block is matched with the clamping groove.

Preferably, a wedge-shaped anchoring part is arranged at the inlet of the clamping groove.

Preferably, the upper part of the first connecting part and the upper part of the second connecting part are both provided with a heat insulation cavity.

Preferably, the bottom of the gusset plate is provided with a barb part extending outwards.

Preferably, the upper part of the second section bar is provided with a hollow groove.

Preferably, the upper end of the inner buckle plate is fixedly connected with a transition piece, and the transition piece is fixedly connected to the bottom of the second profile.

Preferably, the transition piece is of a right-angle structure, and a horizontal bottom surface is formed on the downward side.

A processing method of a rivet-free connected flange comprises the following steps: a prefabrication stage: manufacturing a first connecting part, a second connecting part and a second section by adopting a die casting method;

and (3) assembling: clamping blocks on two sides of the upper part of the second profile are placed into clamping grooves of first connecting parts which are respectively arranged on two sides, and the clamping blocks are arranged left and right for the first time to form an assembly structure of the first connecting parts, the second profile and the second connecting parts; and (3) forming: an extrusion die and an extrusion assembly structure are adopted, so that the clamping block (32) is in interference fit with the clamping groove (13) to finish fixing

Compared with the prior art, the invention has the beneficial effects that:

1) through two section bars of assembly extrusion, during the installation, only need insert the steel sheet of tuber pipe between two section bars for every steel sheet is all supported by two face conflicts, improves stability, thereby need not the reinforcement of rivet.

2) The flange is simple and compact in overall structure, convenient and fast to assemble, firm in connection, good in sealing effect and convenient to use.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic diagram of the split structure of the present invention.

Fig. 3 is a schematic structural diagram of another embodiment of the present invention.

FIG. 4 is a view showing a state in extrusion molding of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b): as can be seen from fig. 1 and 2, the gusset plate comprises a first section bar and a second section bar 3, wherein the upper part of the first section bar is fixedly connected with the upper part of the second section bar 3, both sides of the first section bar extend downwards to form an outer gusset plate 12, and both sides of the lower part of the second section bar extend downwards to form an inner gusset plate 31;

the gusset 31 has a tendency to reduce the spacing from its adjacent gusset 12: referring to fig. 1, the inner fastening plate 31 is inclined outward, and when in use, the steel plate of the air duct is inserted between the inner fastening plate 31 and the outer fastening plate 12, and the two fastening plates interact with each other to tightly support the steel plate therebetween.

In order to improve the abutting force of the two pinch plates, one or both of the two pinch plates can be supported by elastic materials. For illustration, in the present embodiment, the first section is made of an aluminum alloy material, and the second section 3 is made of a plastic steel material.

Further improving the fixing property to the steel plate, a barb portion 311 extending outward is provided on the outer side of the gusset plate 31, and the low-pressure stress is increased by the barb structure.

In addition, the bottom surface of the barb 311 is formed to have an inclined structure in order to guide the insertion of the steel plate.

In addition, in order to reduce the difficulty of production and processing, the first section bar adopts a split type structure, referring to fig. 2, and the first section bar is composed of a first connecting part 1 and a second connecting part 2 which are made of aluminum alloy materials.

The connection relationship between the two connecting parts and the second section bar is as follows:

the upper parts of the first connecting part 1 and the second connecting part 2 are oppositely provided with clamping grooves 13; the two sides of the upper part of the second section bar 3 are both provided with clamping blocks 32 protruding outwards, the first connecting part 1 and the second connecting part 2 are respectively arranged on the two sides of the second section bar 3, and the clamping groove 13 is fixedly connected with the clamping blocks 32 on the same side.

During production and processing, the connection between the connecting part and the second profile can be shaped in a die extrusion mode. As shown with reference to fig. 4. B, C in the figure are an upper die and a lower die which are pressed towards each other to complete the process.

In order to improve the stability after molding, the clamping groove 13 is of a step structure with an increased radial caliber from outside to inside, and the clamping block 32 is matched with the clamping groove;

further, in order to facilitate extrusion, a wedge-shaped anchoring part is arranged at an inlet of the clamping groove 13, and the anchoring part is directly buckled into a diameter-variable section D of the second section matched with the step structure under stress after extrusion; referring to fig. 4, the die B is in two parts, corresponding to the anchoring parts of the two slots.

In another preferred embodiment of the present invention, in order to solve the problem of the second profile being broken when being squeezed, a transition piece (in the figure, a) is added at the connection part of the inner buckle plate 31 and the upper part of the second profile. Referring again to FIG. 4, die C is shown applying force directly to the transition piece. The two transition pieces are arranged at intervals, a transition deformation space is reserved between the two transition pieces, and a part of pressure is shared; under the action of the stress point, the inner buckle plate 31 can further deform outwards, and the extrusion stress of the inner buckle plate 31 towards the outside is improved.

To be fully stressed, the transition piece may be configured as a right angle as in fig. 3, with a planar bottom configuration for contact with the die.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.