A quick guide and positioning tool for bellows forming die

Abstract

A quick-type corrugated pipe forming mold guiding and positioning tooling comprises a base and a positioning column, wherein the inner wall of the base is evenly plugged with three positioning columns, the outer walls of the three positioning columns are fixedly equipped with a top plate, the upper end of the base is fixedly equipped with a lower plugging cover, the interior of the lower plugging cover is provided with a sealing pipe section, the upper end of the lower plugging cover is fixedly equipped with a second end piece, the inner wall of the second end piece is equipped with a second sealing ring fixed to the lower plugging cover, a tube blank is arranged between the second sealing ring and the second end piece, and a combination of multiple groups of positioning holes on the base can achieve full coverage of forming molds of common specifications; the sealing form of both ends of the tube blank is simplified, the sealing effect is improved, and the bellows forming with higher forming pressure can be achieved, thereby improving applicability and comprehensiveness; the base has a linkage structure and three positioning columns are linked to realize the overall rapid removal of the positioning block, the structure is simple, easy to maintain, the operating procedures are few, and the degree of automation of the tooling is improved.

Description

Technical Field

[0001] The invention relates to the technical field of bellows forming processing, and specifically relates to a quick-type bellows forming die guiding and positioning tool. Background Art

[0002] Metal bellows is a tubular part with a continuous corrugated profiled cross section, and is an important component of bellows components. Due to its special structure, it has better functions than straight-walled pipes or metal hoses in terms of connection, sealing, and shock absorption. It is also because of this special pipe wall shape that more requirements are placed on its molding technology and molding equipment;

[0003] As industrial production places more and more stringent and diversified demands on metal bellows, metal bellows have gradually differentiated into many types due to differences in styles. Metal bellows forming technology and equipment also follow this trend of diversity, using the latest academic achievements and innovative technologies to continuously update and develop themselves; as actual production requirements for metal bellows products continue to increase, people have conducted more in-depth research on metal bellows forming technology and intelligent equipment.

[0004] There are many kinds of forming technologies for metal bellows, and the most widely used technology in the field of bellows forming is hydraulic forming technology; especially in the production of thin-walled bellows with medium and small diameters, hydraulic forming occupies a large market share; bellows hydraulic forming technology is a typical application of modern hydraulic forming in pipe forming; hydraulically formed metal bellows have fewer forming processes, high production efficiency, good product quality, high degree of automation of forming equipment, and easy operation, but the existing hydraulically formed metal bellows have a low degree of automation, each forming pad needs to be placed and removed manually, the labor intensity is high, the three-petal sealing effect of the lock is poor, leakage occurs, it is difficult to achieve a higher forming pressure, the forming pressure in the tube blank is difficult to control constant, the mold cover is a semi-cylindrical opening and closing form, and the coaxiality of the bellows after forming is not well controlled. Summary of the invention

[0005] The purpose of the present invention is to provide a quick-type bellows forming die guiding and positioning tooling to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a quick-type corrugated pipe forming mold guiding and positioning tooling, comprising a base and a positioning column, the inner wall of the base is evenly plugged with three positioning columns, the outer walls of the three positioning columns are fixedly equipped with a top plate, the upper end of the base is fixedly equipped with a lower plugging cover, the interior of the lower plugging cover is provided with a sealing pipe section, the upper end of the lower plugging cover is fixedly equipped with a second end piece, the inner wall of the second end piece is equipped with a second sealing ring fixed to the lower plugging cover, a tube blank is arranged between the second sealing ring and the second end piece, the inner wall of the top plate is plugged with a connecting column, the lower end of the connecting column The end is fixedly equipped with an upper blocking cover, the lower end of the upper blocking cover is fixedly equipped with a first end piece, the inner wall of the first end piece is equipped with a first sealing ring fixed to the upper blocking cover, the tube blank is located between the first sealing ring and the first end piece, the outer wall of the positioning column is clamped with a plurality of limiting structures, the upper end of each of the limiting structures is fixedly equipped with a positioning block, the positioning block is sleeved on the outer wall of the positioning column, the inner end of each positioning block is fixedly equipped with a support plate, the upper end of the upper support plate is fitted with the first end piece, and the upper ends of the remaining support plates are equipped with middle mold pieces, and the base is connected to the three positioning columns through a linkage structure.

[0007] Preferably, the linkage structure includes a first gear, the lower end of the base is rotatably equipped with the first gear, the lower ends of the three positioning columns are fixedly equipped with second gears, the outer wall of the first gear is meshed with a chain, the first gear is connected to the second gear through the chain, the second gear is meshed with the chain, and the outer wall of the axis of the first gear is fixedly equipped with a handle.

[0008] Preferably, the limiting structure comprises a limiting block, the limiting block is sleeved on the outer wall of the positioning column, the inner end of the limiting block is threaded with a screw, the screw is clamped with the positioning column, and the surface of the positioning column is equipped with a scale.

[0009] Preferably, a limiting column is fixedly assembled between the top plate and the base.

[0010] Preferably, bearings are fixedly mounted on both upper and lower ends of the positioning column, and the two bearings are respectively embedded in the top plate and the base.

[0011] Compared with the prior art, the beneficial effects of the present invention are: a quick-type bellows forming mold guiding and positioning tooling, a combination of multiple groups of positioning holes on the base to achieve full coverage of commonly used specifications of forming molds; the sealing form at both ends of the tube blank is simplified, and the sealing effect is improved, which can achieve bellows forming with higher forming pressure, and is suitable for hydraulic forming of metal bellows with different forming pressures; improves applicability and comprehensiveness; the use of positioning columns and limit columns can achieve precise control of the verticality and waveform parameters of the bellows, thereby improving product quality; the base has a linkage structure inside, and the three positioning columns are linked, and the base handle can be turned to achieve overall rapid removal of the positioning block, with a simple structure, easy maintenance, fewer operating procedures, high production efficiency, good product quality, and improved tooling automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the present invention;

[0013] Figure 2 A top view of the present invention;

[0014] Figure 3 It is a bottom view of the present invention;

[0015] Figure 4 It is an enlarged schematic diagram of the structure at location A of the present invention.

[0016] In the figure: 1-upper plugging cover, 2-first sealing ring, 3-first end piece, 4-middle mold piece, 5-tube blank, 6-second end piece, 7-second sealing ring, 8-lower plugging cover, 9-connecting column, 10-top plate, 11-limiting column, 12-positioning column, 13-positioning block, 14-limiting structure, 15-base, 16-support plate, 17-first gear, 18-second gear, 19-chain, 20-handle, 21-sealed pipe section, 22-limiting block, 23-screw, 24-scale. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-4The present invention provides a technical solution: a quick-type corrugated pipe forming mold guide positioning tool, comprising a base 15 and a positioning column 12, the inner wall of the base 15 is evenly plugged with three positioning columns 12, the outer walls of the three positioning columns 12 are fixedly equipped with a top plate 10, the upper end of the base 15 is fixedly equipped with a lower plugging cover 8, the interior of the lower plugging cover 8 is provided with a sealing pipe section 21, the upper end of the lower plugging cover 8 is fixedly equipped with a second end piece 6, the inner wall of the second end piece 6 is equipped with a second sealing ring 7 fixed to the lower plugging cover 8, a tube blank 5 is installed between the second sealing ring 7 and the second end piece 6, the inner wall of the top plate 10 is plugged with a connecting column 9, the lower end of the connecting column 9 is fixedly equipped with An upper plugging cover 1 is provided with a first end piece 3 fixedly mounted on the lower end of the upper plugging cover 1, and a first sealing ring 2 fixed to the upper plugging cover 1 is mounted on the inner wall of the first end piece 3. The tube blank 5 is located between the first sealing ring 2 and the first end piece 3. A plurality of limiting structures 14 are clamped on the outer wall of the positioning column 12. A positioning block 13 is fixedly mounted on the upper end of each limiting structure 14. The positioning block 13 is sleeved on the outer wall of the positioning column 12. A support plate 16 is fixedly mounted on the inner end of each positioning block 13. The upper end of the upper support plate 16 is fitted with the first end piece 3, and the upper ends of the remaining support plates 16 are provided with a middle mold piece 4. The base 15 is connected to the three positioning columns 12 through a linkage structure.

[0019] The combination of multiple groups of positioning holes on the base 15 can achieve full coverage of commonly used specifications of forming molds; the sealing form of both ends of the tube blank 5 is simplified, the sealing effect is improved, and the bellows forming with higher forming pressure can be realized, which is suitable for the hydraulic forming of metal bellows with different forming pressures; improve applicability and comprehensiveness; the positioning column 12 and the limit column 11 can realize the precise control of the verticality and waveform parameters of the bellows, and improve the quality of the product; the base 15 is internally linked by a linkage structure to ensure the linkage of the three positioning columns 12, and the rotating linkage structure can realize the overall rapid removal of the support plate 16 on the inner side of the positioning block 13, which has a simple structure, easy maintenance, fewer operating procedures, high production efficiency, good product quality, and improved tooling automation. The axis of the tube blank 5 forming mold is perpendicular to the working plane. Before hydraulic forming, the forming mold is selected according to the specification parameters of the corrugated pipe to be processed, and the bottom 15 is selected according to the outer diameter size of the forming mold. The limit column 12 is installed through a group of mounting holes, and the limit structure 14 on the positioning column 12 is adjusted according to the process. To the specified scale, install the positioning, 13, during hydraulic forming, place the prefabricated tube 5 parts on the lower plug cover 8, install the second sealing ring 7, and sequentially place the formed middle mold piece 4 on the support plate 16 inside the positioning block 13, install the first sealing ring 2 on the upper port of the tube 5 to be processed with corrugations, and install the upper plug, 1, start the hydraulic press, connect the column 9 to compact the upper plug cover 1, and pass the high-pressure emulsion into the sealing pipe section 21. When the pressure reaches the yield strength of the tube 5, the tube 5 is between the two adjacent The initial wave bulges outward between the sheets and the dies. At this time, the pressure inside the tube 5 is maintained constant, the linkage structure is rotated, and the three positioning columns 12 are linked to achieve the overall rapid removal of the support plate inside the positioning block 13. Then the pressure is increased to the molding pressure, and the press machine feeds at a uniform speed. The middle die sheet 4 and the first end sheet 3 and the second end sheet 6 are all fitted together, and the initial wave is squeezed to the specified wave thickness. The tube wall fits the mold cavity and is shaped. After the molding system is depressurized, the connection 9 is returned, the upper plug cover 1 is opened, and the die sheet is removed to obtain a hydraulically formed corrugated tube part.

[0020] Specifically, the linkage structure includes a first gear 17, the lower end of the base 15 is rotatably equipped with the first gear 17, the lower ends of the three positioning columns 12 are fixedly equipped with second gears 18, the outer wall of the first gear 17 is meshed with a chain 19, the first gear 17 is connected to the second gear 18 through the chain 19, the second gear 18 is meshed with the chain 19, and the outer wall of the axis of the first gear 17 is fixedly equipped with a turning handle 20.

[0021] When the turning handle 20 is turned, the first gear 17 is driven to rotate, and the first gear 17 drives the second gear 18 to rotate through the chain 19. At the same time, the second gear 18 drives the positioning column 12 to rotate, and drives the limiting structure 14 and the positioning block 13 to rotate through the positioning column 12.

[0022] Specifically, the limiting structure 14 includes a limiting block 22, which is sleeved on the outer wall of the positioning column 12, and the inner end of the limiting block 22 is threaded with a screw 23, which is clamped with the positioning column 12, and the surface of the positioning column 12 is equipped with a scale 24.

[0023] When using the limiting structure 14, firstly, the limiting block 22 needs to be aligned with the appropriate scale of the scale 24, and the screw 23 is tightened to ensure the fixing effect.

[0024] Specifically, a limiting column 11 is fixedly assembled between the top plate 10 and the base 15 .

[0025] The limiting column 11 plays a role of limiting.

[0026] Specifically, bearings are fixedly mounted on both the upper and lower ends of the positioning column 12 , and the two bearings are embedded in the top plate 10 and the base 15 respectively.

[0027] The bearing can ensure that the positioning column 12 rotates more smoothly.

[0028] Working principle: The axis of the tube blank 5 forming mold is perpendicular to the working plane. Before hydraulic forming, the forming mold is selected according to the specification parameters of the corrugated pipe to be processed, and the bottom 15 is selected according to the outer diameter size of the forming mold. The limit column 12 is installed, and the limit structure 14 on the positioning column 12 is adjusted to the specified scale according to the process. The positioning 13 is installed. During hydraulic forming, the prefabricated tube blank 5 parts are placed on the lower plug cover 8, the second sealing ring 7 is installed, and the formed middle mold piece 4 is placed on the support plate 16 inside the positioning block 13 in turn. The first sealing ring 2 is installed on the upper port of the tube blank 5 to be processed with corrugations, and the upper plug 1 is installed. Start the hydraulic The machine uses a connecting column 9 to compact the upper plugging cover 1. A high-pressure emulsion is introduced into the sealing pipe section 21. When the pressure reaches the yield strength of the tube blank 5, the tube blank 5 expands outward between the two adjacent die pieces to form an initial wave. At this time, the pressure inside the tube 5 is maintained constant, and the linkage structure is rotated. The three positioning columns 12 are linked to achieve the overall rapid removal of the support plate inside the positioning block 13. After that, the pressure is increased to the molding pressure, and the press machine feeds at a uniform speed. The middle die piece 4 and the first end piece 3 and the second end piece 6 are all fitted together, and the initial wave is extruded to a specified wave thickness. The tube wall fits the mold cavity for final shaping. After the molding system is depressurized, the connection 9 is returned, the upper plugging cover 1 is opened, and the die piece is removed to obtain a hydraulically formed corrugated pipe part.

[0029] In the description of the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", and "fix" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A quick-type bellows forming mold guiding and positioning tool, comprising a base (15) and a positioning column (12), wherein three positioning columns (12) are evenly inserted into the inner wall of the base (15), characterized in that: The outer walls of the three positioning columns (12) are fixedly mounted with a top plate (10); the upper end of the base (15) is fixedly mounted with a lower plugging cover (8); a sealing pipe section (21) is provided inside the lower plugging cover (8); the upper end of the lower plugging cover (8) is fixedly mounted with a second end piece (6); the inner wall of the second end piece (6) is mounted with a second sealing ring (7) fixed to the lower plugging cover (8); a tube blank (5) is mounted between the second sealing ring (7) and the second end piece (6); a connecting column (9) is inserted into the inner wall of the top plate (10); the lower end of the connecting column (9) is fixedly mounted with an upper plugging cover (1); the lower end of the upper plugging cover (1) is fixedly mounted with a first end piece (3); the first end piece (3) ) is provided with a first sealing ring (2) fixed to the upper plugging cover (1), the tube blank (5) is located between the first sealing ring (2) and the first end piece (3), the outer wall of the positioning column (12) is clamped with a plurality of limiting structures (14), the upper end of each limiting structure (14) is fixedly provided with a positioning block (13), the positioning block (13) is sleeved on the outer wall of the positioning column (12), the inner side end of each positioning block (13) is fixedly provided with a supporting plate (16), the upper end of the upper supporting plate (16) is fitted with the first end piece (3), the upper ends of the remaining supporting plates (16) are provided with middle mold pieces (4), and the base (15) is connected to the three positioning columns (12) through a linkage structure; The linkage structure comprises a first gear (17), the lower end of the base (15) is rotatably mounted with the first gear (17), the lower ends of the three positioning columns (12) are fixedly mounted with second gears (18), the outer wall of the first gear (17) is meshed with a chain (19), the first gear (17) is connected to the second gear (18) via the chain (19), the second gear (18) is meshed with the chain (19), and the outer wall of the axis of the first gear (17) is fixedly mounted with a turning handle (20); The limiting structure (14) comprises a limiting block (22), the limiting block (22) being sleeved on the outer wall of the positioning column (12), the inner end of the limiting block (22) being threaded with a screw (23), the screw (23) being snap-fitted with the positioning column (12), and the surface of the positioning column (12) being equipped with a scale (24).

2. A quick-guide positioning tool for a bellows forming die according to claim 1, characterized in that: A limiting column (11) is fixedly assembled between the top plate (10) and the base (15).

3. The quick-guide positioning tool for bellows forming mold according to claim 1, characterized in that: The upper and lower ends of the positioning column (12) are fixedly equipped with bearings, and the two bearings are respectively embedded in the top plate (10) and the base (15).

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