Corrugated pipe forming die piece

Abstract

The utility model discloses a corrugated pipe forming die piece. The corrugated pipe forming die piece comprises a first split die, a second split die, a slewing bearing piece and a locking piece. Wherein the slewing bearing piece is used for achieving relative rotation of the first split mold and the second split mold to form an open state and a butt joint state, the open state is used for forming a corrugated pipe, and the butt joint state is used for forming a space for avoiding the corrugated pipe so that the mold piece can be separated from the corrugated pipe; and in the butt joint state, the relative position between the first split mold and the second split mold is locked through the locking piece. In the butt joint state, the corrugated pipe is formed through the first forming part and the second forming part; in the opening state, the first forming part and the second forming part are separated from each other to form a space for avoiding the corrugated pipe, so that the mold piece is separated from the corrugated pipe; compared with the complexity of disassembling and assembling an existing mold piece through a bolt, the mold piece provided by the embodiment of the utility model is more convenient and faster to use.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of metal bellows forming equipment, and particularly to a bellows forming die sheet. BACKGROUND

[0002] In the hydraulic forming process of the bellows, the pipe blank needs to be installed into the assembly of multiple die sheets, and then the pipe blank is closed at both ends. Then, hydraulic oil is injected into the pipe blank. Under the action of the hydraulic oil, the pipe wall of the pipe blank will be plastically deformed to form the bellows.

[0003] The existing die sheet is composed of two half-molds, and the two half-molds are combined into a complete die sheet by bolts. Before forming the bellows, the two half-molds are fixedly connected by bolts, and then are sleeved outside the pipe blank for hydraulic forming. After forming, the bolts are loosened, and the two half-molds are taken off respectively.

[0004] However, the present inventors found at least the following technical problems in the process of implementing the technical solutions of the embodiments of the present application:

[0005] Such a die sheet needs to be disassembled or installed with bolts when in use, and the use steps are complicated and the disassembly and assembly efficiency is low. CONTENT OF THE UTILITY MODEL

[0006] The embodiments of the present application provide a bellows forming die sheet, which solves the technical problem of low disassembly and assembly efficiency of the die sheet in the prior art, and improves the convenience of using the die sheet.

[0007] The embodiments of the present application provide a bellows forming die sheet, which includes:

[0008] The first die half includes:

[0009] The first base body has a first connecting end and a second connecting end;

[0010] The first forming part is arranged on the first base body;

[0011] The second die half includes:

[0012] The second base body has a third connecting end and a fourth connecting end;

[0013] The second forming part is arranged on the second base body;

[0014] The first connecting end and the third connecting end are hinged through the rotary supporting piece, so that the first die half and the second die half rotate relative to each other to form an open state and a butt joint state;

[0015] When the first die half and the second die half are in the open state, the first forming part is separated from the second forming part;

[0016] The first forming part and the second forming part are connected in series in a ring shape in the butt joint state between the first mold part and the second mold part.

[0017] The second connecting end and the fourth connecting end are connected through the locking piece in the butt joint state between the first mold part and the second mold part.

[0018] The one or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0019] The hinge connection between the first base body of the first mold part and the second base body of the second mold part is realized through the rotary supporting piece, and then the first mold part and the second mold part can relatively rotate to quickly form the open state and the butt joint state; in the butt joint state, the forming of the corrugated pipe is realized through the first forming part and the second forming part; in the open state, the first forming part and the second forming part are separated from each other to form a space for avoiding the corrugated pipe, so as to separate the mold piece from the corrugated pipe and take out the corrugated pipe; therefore, compared with the cumbersome bolt disassembly in the prior art, the mold piece provided in the embodiments of the present application is more convenient and fast to use. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 A structure schematic diagram of a corrugated pipe forming mold piece is shown in the embodiments of the present application;

[0021] Figure 2 A structure schematic diagram of the first mold part in the embodiments of the present application is shown;

[0022] Figure 3 A structure schematic diagram of a unit wave in the embodiments of the present application is shown;

[0023] Figure 4 A structure schematic diagram of the second mold part in the embodiments of the present application is shown;

[0024] Figure 5 An assembly position schematic diagram of the first mold part and the second mold part in the embodiments of the present application is shown;

[0025] Figure 6 Another structure schematic diagram of the fourth connecting end in the embodiments of the present application is shown;

[0026] Figure 7 Another structure schematic diagram of the second connecting end in the embodiments of the present application is shown;

[0027] Figure 8 An assembly position schematic diagram of the fourth connecting end and the second connecting end in the embodiments of the present application is shown;

[0028] Figure 9 A structure schematic diagram of a group of mold pieces in the embodiments of the present application is shown.

[0029] The components represented by the numbers in the drawings are listed as follows:

[0030] 100 - first split mold; 200 - second split mold; 300 - rotary support; 400 - locking piece;

[0031] 110 - first base body; 111 - first connecting end; 112 - second connecting end; 113 - groove; 114 - first positioning hole; 115 - first clamping groove; 116 - third positioning hole;

[0032] 120 - first forming part; 121 - unit wave; 121a - wave crest; 121b - first side wall; 121c - second side wall;

[0033] 210 - second base body; 211 - third connecting end; 212 - fourth connecting end; 213 - second positioning hole; 214 - second clamping groove; 215 - fourth positioning hole;

[0034] 220 - second forming part;

[0035] 310 - guide hole;

[0036] 410 - clamping block; 420 - rod piece. DETAILED DESCRIPTION

[0037] The die is a necessary mold in the production process of the corrugated pipe, and the existing die is composed of two half molds which are combined by bolts. The two half molds are combined into a complete die by bolts. The bolts need to be disassembled and assembled when the die is used, which is complicated and low in efficiency. Therefore, the embodiment of the present application provides a corrugated pipe forming die, which solves the technical problem of low disassembly and assembly efficiency of the die in the prior art and improves the convenience of using the die.

[0038] The technical scheme in the embodiment of the present application is to solve the problem of low disassembly and assembly efficiency of the die, and the general idea is as follows:

[0039] The first base body 110 of the first split mold 100 and the second base body 210 of the second split mold 200 are hinged through the rotary support 300, so that the first split mold 100 and the second split mold 200 rotate relative to each other to form an open state and a butt joint state. In the open state, the first forming part of the first split mold 100 and the second forming part of the second split mold 200 are separated from each other. In the butt joint state, the first forming part of the first split mold 100 and the second forming part of the second split mold 200 are connected end to end in a ring shape, and in this state, the relative position between the first base body 110 and the second base body 210 is locked by the locking piece 400.

[0040] Since the hinge connection between the first base body 110 and the second base body 210 is achieved through the swing bearing 300, the first mold piece 100 and the second mold piece 200 can be relatively rotated to quickly form the open state and the docking state, thereby making the mold piece more convenient and fast to use.

[0041] In order to better understand the above technical solutions, the above technical solutions will be described in detail below in combination with the drawings of the specification and specific embodiments.

[0042] As shown in Figure 1 A corrugated pipe forming mold piece includes a first mold piece 100, a second mold piece 200, a swing bearing 300, and a locking piece 400. The swing bearing 300 is used to achieve the relative rotation of the first mold piece 100 and the second mold piece 200 to form an open state and a docking state. The open state is used for the formation of the corrugated pipe, and the docking state is used to form a space for avoiding the corrugated pipe, so as to separate the mold piece from the corrugated pipe. In the docking state, the relative position between the first mold piece 100 and the second mold piece 200 is locked through the locking piece 400.

[0043] Next, each part will be discussed one by one.

[0044] As shown in Figure 2 The first mold piece 100 of the embodiment of the present application includes a first base body 110 and a first forming part 120. The first forming part 120 is used for the formation of the corrugated pipe and is arranged on the first base body 110. Overall, the first mold piece 100 is in a semi-ring shape.

[0045] In some examples, the first base body 110 and the first forming part 120 are integrally formed. In other examples, the first base body 110 and the first forming part 120 can also be designed separately, and the first base body 110 and the first forming part 120 are connected.

[0046] In some examples, the first forming part 120 includes a unit wave 121, which is used for the formation of the corrugated pipe.

[0047] As shown in Figure 3 The unit wave 121 includes a wave crest 121a, a first side wall 121b, and a second side wall 121c. The first side wall 121b is connected to one side of the wave crest 121a. The second side wall 121c is connected to the other side of the wave crest 121a, and the length of the second side wall 121c is greater than the length of the first side wall 121b.

[0048] As shown in Figure 4As shown, the second mold half 200 of the embodiment of the application comprises a second base body 210 and a second forming part 220; the second forming part 220 is used for forming the bellows, and the second forming part 220 is arranged on the second base body 210. Overall, the second mold half 200 is in a half-ring shape.

[0049] In some examples, the second base body 210 and the second forming part 220 are integrally formed; in other examples, the second base body 210 and the second forming part 220 can also be designed separately, and are connected to each other.

[0050] In some examples, the second forming part 220 comprises the unit wave 121 described above.

[0051] The slewing bearing 300 of the embodiment of the application is used to realize the relative rotation between the first mold half 100 and the second mold half 200. In examples, the first base body 110 has a first connecting end 111, and the second base body 210 has a third connecting end 211; the first connecting end 111 and the third connecting end 211 are hinged through the slewing bearing 300, so as to make the first mold half 100 and the second mold half 200 rotate relative to each other, and form an open state and an abutting state; when the first mold half 100 and the second mold half 200 are in the abutting state, the first forming part 120 and the second forming part 220 are connected in a ring shape, and in this state, the bellows are formed through the first forming part 120 and the second forming part 220.

[0052] In some examples, the first connecting end 111 is provided with a groove 113 along the thickness direction of the first base body 110 of the pair, as shown in Figure 5 When the first mold half 100 and the second mold half 200 are assembled, the third connecting end 211 is embedded into the groove 113.

[0053] Further, the first connecting end 111 is provided with a first positioning hole 114, and the third connecting end 211 is provided with a second positioning hole 213 coaxially arranged with the first positioning hole 114; the slewing bearing 300 is arranged in the first positioning hole 114 and the second positioning hole 213. Here, the slewing bearing 300 is in a columnar shape. Of the first positioning hole 114 and the second positioning hole 213, one is in interference fit with the slewing bearing 300, and the other is in clearance fit with the slewing bearing 300; for example, the first positioning hole 114 is in interference fit with the slewing bearing 300, and the second positioning hole 213 is in clearance fit with the slewing bearing 300; conversely, if the first positioning hole 114 is in clearance fit with the slewing bearing 300, the second positioning hole 213 is in interference fit with the slewing bearing 300.

[0054] In some examples, the slewing bearing 300 is provided with a guide hole 310.

[0055] The locking member 400 of the embodiment of the present application, see Figure 1 is used to lock the relative position between the first mold half 100 and the second mold half 200 in the above-mentioned docking state. Of course, when the relative rotation between the first mold half 100 and the second mold half 200 is needed, the locking member 400 can also be operated to release the relative position between the first mold half 100 and the second mold half 200. In the example, the above-mentioned first base body 110 also has a second connecting end 112, and the above-mentioned second base body 210 also has a fourth connecting end 212. In the docking state between the first mold half 100 and the second mold half 200, the second connecting end 112 and the fourth connecting end 212 are connected through the locking member 400.

[0056] In some examples, the above-mentioned second connecting end 112 is provided with a first clamping groove 115; the above-mentioned fourth connecting end 212 is provided with a second clamping groove 214; the locking member 400 includes a clamping block 410, one end of the clamping block 410 is detachably connected with the first clamping groove 115, and the other end of the clamping block 410 is detachably connected with the second clamping groove 214. When it is needed to release the locking, the clamping block 410 needs to be detached from the first clamping groove 115 and the second clamping groove 214. In order to facilitate the disassembly and assembly of the clamping block 410, here, a gap is arranged between the first clamping groove 115 and one end of the clamping block 410, and between the second clamping groove 214 and the other end of the clamping block 410, so that the clamping block 410 can be clamped from the gap by a tweezer, which is not shown in the figure.

[0057] In another example, as shown in Figures 6 to 8 , the second connecting end 112 is provided with a third positioning hole 116; the fourth connecting end 212 is provided with a fourth positioning hole 215; in the above-mentioned docking state between the first mold half 100 and the second mold half 200, the third positioning hole 116 and the fourth positioning hole 215 are coaxially arranged; the locking member 400 includes a rod member 420; the rod member 420 is arranged in the third positioning hole 116 and the fourth positioning hole 215. When it is needed to release the locking, the rod member 420 needs to be separated from the third positioning hole 116 and the fourth positioning hole 215.

[0058] When bellows forming is required, the first mold 100 and the second mold 200 are in a docking state. At this time, the first forming part 120 and the second forming part 220 are connected end to end to form a ring. In this state, the relative position between the first base 110 and the second base 210 is locked by the locking member 400. Then, the bellows forming die is integrally mounted on the outside of the tube blank. Hydraulic oil is injected into the injected tube blank. Under the action of the hydraulic oil, the tube wall of the tube blank extends along the surface of the first forming part 120 and the surface of the second forming part 220 to form the bellows. Then, the locking member 400 is opened to unlock the relative position between the first base 110 and the second base 210, so that the first mold 100 and the second mold 200 are relatively rotated to an open state. In this state, the first forming part 120 and the second forming part 220 are separated to form a space to avoid the bellows, so that the die and the bellows can be separated and the bellows can be removed.

[0059] As described above, during the entire use process of the mold, the first sub-mold 100 and the second sub-mold 200 can quickly achieve an open state or a docking state, which is more convenient to use.

[0060] When using a set of dies, such as Figure 9 As shown, a set of mold pieces includes multiple bellows forming mold pieces. When the bellows forming mold pieces are stacked one after another, a guide rod 500 can be used to pass through the guide holes 310 of each bellows forming mold piece in sequence. In addition, the bellows forming mold pieces can also share the same rod 420, which can be used to simultaneously lock or release the locking position of each bellows forming mold piece. The locking position here refers to the relative position between the first sub-mold 100 and the second sub-mold 200 in the aforementioned docking state. This helps to further improve the efficiency of the assembly and disassembly of the bellows forming mold pieces.

[0061] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0062] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A bellows forming die, characterized in that: include: The first parting mold includes: A first substrate having a first connection end and a second connection end; a first forming portion, provided on the first substrate; The second parting mold includes: a second base having a third connecting end and a fourth connecting end; a second forming portion, provided on the second base; a slewing support, wherein the first connecting end and the third connecting end are hingedly connected via the slewing support, so that the first parting mold and the second parting mold can rotate relative to each other to form an open state and a docking state; When the first parting mold and the second parting mold are in an open state, the first molding part and the second molding part are separated; When the first parting mold and the second parting mold are in a butt-jointed state, the first forming portion and the second forming portion are connected end to end to form a ring shape; A locking piece, wherein when the first parting mold and the second parting mold are in a docking state, the second connecting end and the fourth connecting end are connected by the locking piece.

2. The corrugated pipe forming die according to claim 1, wherein: The first connecting end is provided with a groove along the thickness direction of the first base body, and the third connecting end is embedded in the groove.

3. The corrugated pipe forming die according to claim 2, wherein: The first connecting end is provided with a first positioning hole, the third connecting end is provided with a second positioning hole coaxially arranged with the first positioning hole, and the slewing support is passed through the first positioning hole and the second positioning hole.

4. The corrugated pipe forming die according to claim 1, wherein: A guide hole is provided on the slewing support.

5. The corrugated pipe forming die according to claim 1, wherein: The second connecting end is provided with a first card slot; The fourth connecting end is provided with a second card slot; The locking member includes a card block, one end of the card block is detachably connected to the first card slot, and the other end of the card block is detachably connected to the second card slot.

6. The corrugated pipe forming die according to claim 1, wherein: The second connecting end is provided with a third positioning hole; The fourth connecting end is provided with a fourth positioning hole; The locking member includes a rod. When the first parting mold and the second parting mold are in a docking state, the third positioning hole and the fourth positioning hole are coaxially arranged, and the rod is inserted into the third positioning hole and the fourth positioning hole.

7. The corrugated pipe forming die according to any one of claims 1 to 6, characterized in that: The first shaping portion and the second shaping portion both include unit waves.

8. The corrugated pipe forming die according to claim 7, wherein: The unit wave includes: crest; a first side wall connected to one side of the wave crest; The second side wall is connected to the other side of the wave crest, and the length of the second side wall is greater than the length of the first side wall.

9. The corrugated pipe forming die according to any one of claims 1 to 6, characterized in that: The first base and the first molding part are integrally molded, and the second base and the second molding part are integrally molded.

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