Forming die and manufacturing method of large special-shaped pipeline

Abstract

The invention discloses a large special-shaped pipeline forming mold and a manufacturing method, the mold comprises an upper mold plate, a lower mold plate and a mold core, the matched end faces of the upper mold plate and the lower mold plate are concavely provided with special-shaped mold cavities, each special-shaped mold cavity is concavely provided with a spiral or a plurality of raised line grooves arranged at intervals, and the raised line grooves are matched with the upper mold plate and the lower mold plate. And the raised lines, the grooves and the special-shaped mold cavity form a special-shaped pipeline body which is matched with the mold core and is used for melting and flowing of rubber. In the prior art, aiming at a processing mode of a large special-shaped rubber pipeline, a pipeline with a corresponding diameter is prepared by using a rubber extrusion molding machine, then the pipeline is cut into a required length according to a product design requirement, and then the cut pipeline penetrates into a model manufactured according to the product design requirement and is fixed, so that the large special-shaped rubber pipeline is manufactured. The process has the defects of being too complicated, low in efficiency, high in small-batch production cost, difficult in product size control and low in percent of pass.

Description

Technical Field

[0001] The invention relates to the technical field of special-shaped pipe production, and in particular to a forming die and a manufacturing method for a large special-shaped pipe. Background Art

[0002] Special-shaped tubes are seamless steel tubes made of various special shapes by cold drawing. Special-shaped tubes are generally distinguished according to the cross-section. According to the material, they can be divided into seamless steel tube special-shaped tubes, aluminum alloy special-shaped tubes and plastic special-shaped tubes. The development of special-shaped tubes is mainly the development of product varieties, including cross-sectional shape, material and performance. Extrusion, oblique die rolling and cold drawing are effective methods for producing special-shaped tubes.

[0003] In the prior art, for the processing method of large special-shaped rubber pipes, a rubber extruder is first used to prepare a pipe of corresponding diameter, and then the pipe is cut into the required length according to the product design requirements, and then the cut pipe is inserted into a mold made according to the product design requirements and fixed, and then placed in a steam vulcanizer for heating and shaping. The disadvantages of this process are: too complicated, low efficiency, high cost of small batch production, difficult to control product size, and low pass rate. Summary of the invention

[0004] In view of the above technical problems, the purpose of the present invention is to overcome the processing method of large special-shaped rubber pipes in the prior art, which is to first prepare pipes of corresponding diameters using a rubber extrusion molding machine, then cut the pipes into required lengths according to product design requirements, and then insert the cut pipes into a model made according to product design requirements and fix them, and then put them into a steam vulcanizer for heating and shaping. The disadvantages of this process are: too complicated, low efficiency, high cost of small batch production, difficult to control product size, and low pass rate, so as to provide a molding mold and a manufacturing method for large special-shaped pipes that solve the above problems.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a forming mold and a manufacturing method for a large-scale special-shaped pipe, wherein the large-scale special-shaped pipe comprises: a special-shaped pipe body, wherein the outer surface of the special-shaped pipe body is integrally formed with spiral or several spaced convex strips, and one end of the special-shaped pipe body is provided with a limiting convex point for limiting the front end clamp to prevent the clamp from being too forceful and causing premature damage to the product, and the other end of the special-shaped pipe body is provided with a cross block for preventing the special-shaped pipe from deviating during vehicle driving, and a dust-proof enclosure is provided on the side of the cross block to prevent dust from entering the airway of the special-shaped pipe body during vehicle driving, and a through hole is provided on the side of the dust-proof enclosure for better positioning the special-shaped pipe body, wherein, The special-shaped pipe body, convex strips, cross bars, limit convex points and dustproof enclosure are all formed in one piece.

[0006] Preferably, the mold comprises an upper mold plate, a lower mold plate and a core, and the end surfaces of the upper mold plate and the lower mold plate that are adapted to each other are concavely provided with a special-shaped mold cavity, and each of the special-shaped mold cavities is concavely provided with a spiral or a plurality of convex grooves arranged at intervals, and the convex grooves and the special-shaped mold cavity form a special-shaped pipe body adapted to the core for the rubber to melt and flow, wherein, A convex groove is formed at one end opening of the special-shaped mold cavity, and the convex groove is used to form a limiting convex point at the end of the special-shaped pipe body. A horizontal block groove is formed at the opening of the other end of the special-shaped mold cavity, and the horizontal block groove is used to form a horizontal block at the end of the special-shaped pipe body. A retaining groove is provided on the side of the transverse retaining groove, and the retaining groove is used to form a dust-proof enclosure at the end of the special-shaped pipe body. A fixing column is provided on the side of the enclosure groove, and the fixing column is used to form a through hole at the end of the special-shaped pipe body.

[0007] Preferably, a positioning seat is installed on the end surface of the upper template close to the lower template, and the positioning seat is engaged with an assembly groove recessed on the corresponding end surface of the lower template.

[0008] Preferably, a plurality of first guide posts are installed on the upper template, and the first guide posts are engaged with first limiting grooves recessed on the lower template for positioning.

[0009] Preferably, a plurality of second guide posts are installed on the lower template, and the second guide posts are engaged with second limiting grooves recessed on the upper template for positioning.

[0010] Preferably, a mounting groove for engaging and positioning with the core is recessed at an opening on one side of the special-shaped mold cavity of the lower mold plate.

[0011] Preferably, the method comprises the following steps: Step 1: Fix the upper template on the upper plate of the rubber vacuum vulcanizer, fix the lower template on the transfer template of the rubber vacuum vulcanizer, and control the vulcanization temperature at 170℃-190℃ Step 2: Remove the rubber vacuum vulcanizer template and place rubber on the upper and lower surfaces of the core. Step 2: After placing the rubber material, move the rubber vacuum vulcanizer transfer template into the rubber vacuum vulcanizer for pressurized vulcanization, and control the pressure to 20-135Mpa, the vulcanization temperature to 170℃-190℃, and the cycle time of the hot vulcanization stage to 5-8 minutes.

[0012] Step 4: The rubber vacuum vulcanizer automatically moves out the template and takes out the product.

[0013] According to the above technical solution, the forming die and manufacturing method of the large-scale special-shaped pipe provided by the present invention have the following beneficial effects: 1. By setting the special-shaped mold cavity, convex groove, horizontal groove, fixed column and enclosure groove, the special-shaped pipe can be quickly formed and processed better, avoiding cutting into the required length according to the product design requirements. Then the cut pipe is inserted into the model made according to the product design requirements and fixed, and then placed in the steam vulcanization tank for heating and shaping. In this way, the operation is more convenient, which greatly improves the work efficiency and practicability.

[0014] 2. Through holes are set to increase the positioning of the assembly and make the product more stable during vehicle movement without displacement. After the cross bar is inserted into the assembly docking parts, the product will not shift during vehicle driving. The limiting protrusions are used to limit the front clamp to prevent the clamp from being too forceful and causing premature damage to the product. The dustproof enclosure can effectively prevent dust from entering the airway while the vehicle is driving, thereby causing airway wear.

[0015] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation mode; and the parts not involved in the present invention are the same as the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the upper template structure of a forming die and a manufacturing method for a large-scale special-shaped pipe provided in a preferred embodiment of the present invention; Figure 2 It is a schematic diagram of the lower template structure of a forming die and a manufacturing method for a large-scale special-shaped pipe provided in a preferred embodiment of the present invention; Figure 3 It is a schematic diagram of the position structure of the lower mold plate and the core of a large-scale special-shaped pipe forming mold and a manufacturing method provided in a preferred embodiment of the present invention; Figure 4 It is a schematic diagram of a special-shaped pipe structure of a forming die and a manufacturing method of a large special-shaped pipe provided in a preferred embodiment of the present invention; Figure 5 It is a schematic diagram of the side view structure of a special-shaped pipe, a forming mold and a manufacturing method of a large special-shaped pipe provided in a preferred embodiment of the present invention.

[0017] Description of Reference Numerals In the figure: 1, upper template, 101, second limiting groove, 2, lower template, 201, first limiting groove, 202, assembly groove, 3, core, 4, first guide column, 5, positioning seat, 6, second guide column, 7, special-shaped cavity, 701, convex point groove, 702, cross block groove, 703, installation groove, 704, fixing column, 705, convex strip groove, 706, enclosure groove, 8, special-shaped pipe body, 801, convex strip, 802, cross block, 803, through hole, 804, dustproof enclosure, 805, limiting convex point. DETAILED DESCRIPTION

[0018] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0019] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0020] like Figure 1-5 As shown, a forming mold and a manufacturing method of a large-scale special-shaped pipe, the large-scale special-shaped pipe comprises: a special-shaped pipe body 8, the outer surface of the special-shaped pipe body 8 is integrally formed with a spiral or a plurality of spaced convex strips 801, one end of the special-shaped pipe body 8 is provided with a limiting convex point 805 for limiting the front end clamp to prevent the clamp from being too forceful and causing premature damage to the product, and the other end of the special-shaped pipe body 8 is provided with a cross block 802 for preventing the special-shaped pipe from deviating during vehicle driving, the side of the cross block 802 is provided with a dustproof enclosure 804 to prevent dust from entering the airway of the special-shaped pipe body 8 during vehicle driving, and the side of the dustproof enclosure 804 is provided with a through hole 803 for better positioning the special-shaped pipe body 8, wherein, The special-shaped pipe body 8, the convex strip 801, the cross bar 802, the limiting protrusion 805 and the dustproof enclosure 804 are all formed in one piece.

[0021] Specifically, by providing a cross bar 802, a through hole 803, a limiting protrusion 805 and a dustproof enclosure 804 on the special-shaped pipe body 8, the special-shaped pipe can be better protected and damage caused by displacement or extrusion of the special-shaped pipe can be avoided. This greatly ensures the quality of the special-shaped pipe and also greatly improves the service life of the special-shaped pipe.

[0022] In this embodiment, the mold includes an upper mold plate 1, a lower mold plate 2 and a core 3. The end surfaces of the upper mold plate 1 and the lower mold plate 2 are concavely provided with a special-shaped mold cavity 7. Each of the special-shaped mold cavities 7 is concavely provided with a spiral or a plurality of convex grooves 705 arranged at intervals. The convex grooves 705 and the special-shaped mold cavity 7 form a special-shaped pipe body 8 adapted to the core 3 for the rubber to melt and flow, wherein: A convex groove 701 is formed at one end opening of the special-shaped mold cavity 7. The convex groove 701 is used to form a limiting convex point 805 at the end of the special-shaped pipe body 8. A horizontal block groove 702 is formed at the opening of the other end of the special-shaped mold cavity 7. The horizontal block groove 702 is used to form a horizontal block 802 at the end of the special-shaped pipe body 8. A retaining groove 706 is provided on the side of the horizontal retaining groove 702, and the retaining groove 706 is used to form a dustproof retaining groove 804 at the end of the special-shaped pipe body 8. A fixing column 704 is provided on the side of the enclosure groove 706 , and the fixing column 704 is used to form a through hole 803 at the end of the special-shaped pipe body 8 .

[0023] Specifically, by forming the special-shaped pipe body 8, the convex strip 801, the horizontal guard 802, the limit convex point 805 and the dustproof enclosure 804 into one piece, the special-shaped pipe can be processed better, avoiding the problem of cutting into the required length according to the product design requirements. Then, the cut pipe is inserted into the mold made according to the product design requirements, fixed, and then placed in the steam vulcanizer for heating and shaping. In this way, the operation is more convenient, thereby greatly improving the work efficiency and also greatly improving the practicality.

[0024] In this embodiment, a positioning seat 5 is installed on the end surface of the upper template 1 close to the lower template 2, and the positioning seat 5 is engaged with the assembly groove 202 recessed on the corresponding end surface of the lower template 2.

[0025] In this embodiment, a plurality of first guide posts 4 are installed on the upper template 1 , and the first guide posts 4 are engaged with the first limiting grooves 201 recessed on the lower template 2 for positioning.

[0026] In this embodiment, a plurality of second guide posts 6 are installed on the lower template 2, and the second guide posts 6 are engaged with second limiting grooves 101 recessed on the upper template 1 for positioning.

[0027] In this embodiment, a mounting groove 703 for engaging and positioning with the core 3 is recessed at an opening on one side of the special-shaped cavity 7 of the lower mold plate 2 .

[0028] Specifically, by arranging the mutual cooperation between the positioning seat 5, the first guide column 4 and the second guide column 6, the accurate positioning between the upper template 1 and the lower template 2 is better achieved, thereby ensuring that the product size will not deviate.

[0029] In this embodiment, the following steps are included: Step 1: Fix the upper template 1 on the upper plate of the rubber vacuum vulcanizer, fix the lower template 2 on the transfer template of the rubber vacuum vulcanizer, and control the vulcanization temperature at 170℃-190℃ Step 2: Remove the rubber vacuum vulcanizer template and place rubber on the upper and lower surfaces of the core 3. Step 2: After placing the rubber material, move the rubber vacuum vulcanizer transfer template into the rubber vacuum vulcanizer for pressurized vulcanization, and control the pressure to 20-135Mpa, the vulcanization temperature to 170℃-190℃, and the cycle time of the hot vulcanization stage to 5-8 minutes.

[0030] Step 4: The rubber vacuum vulcanizer automatically moves out the template and takes out the product.

[0031] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, a variety of simple modifications can be made to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

[0032] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0033] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A large special-shaped pipeline, characterized in that: The large-scale special-shaped pipe comprises: a special-shaped pipe body (8), the outer surface of the special-shaped pipe body (8) is integrally formed with spiral or multiple spaced convex strips (801), one end of the special-shaped pipe body (8) is provided with a limiting convex point (805) for limiting the front clamp to prevent the clamp from being too strong and causing premature damage to the product, and the other end of the special-shaped pipe body (8) is provided with a cross block (802) for preventing the special-shaped pipe from deviating during vehicle driving, the side of the cross block (802) is provided with a dustproof enclosure (804) for preventing dust from entering the airway of the special-shaped pipe body (8) during vehicle driving, and the side of the dustproof enclosure (804) is provided with a through hole (803) for better positioning the special-shaped pipe body (8), wherein: The special-shaped pipe body (8), the convex strip (801), the cross bar (802), the limit convex point (805) and the dustproof enclosure (804) are all formed in one piece.

2. A forming die for a large-sized special-shaped pipe according to claim 1, characterized in that: The mold comprises an upper mold plate (1), a lower mold plate (2) and a core (3); the end surfaces of the upper mold plate (1) and the lower mold plate (2) are concavely provided with a special-shaped mold cavity (7); each of the special-shaped mold cavities (7) is concavely provided with a spiral or a plurality of convex grooves (705) arranged at intervals; the convex grooves (705) and the special-shaped mold cavity (7) form a special-shaped pipe body (8) that is compatible with the core (3) and is provided for the melted rubber to flow, wherein: A convex groove (701) is provided at an opening of one end of the special-shaped mold cavity (7), and the convex groove (701) is used to form a limiting convex point (805) at the end of the special-shaped pipe body (8). A cross-piece groove (702) is concavely provided at the opening of the other end of the special-shaped mold cavity (7), and the cross-piece groove (702) is used to form a cross-piece (802) at the end of the special-shaped pipe body (8). A retaining groove (706) is provided on the side of the transverse retaining groove (702), and the retaining groove (706) is used to form a dustproof retaining groove (804) at the end of the special-shaped pipe body (8). A fixing column (704) is provided on the side of the enclosure groove (706), and the fixing column (704) is used to form a through hole (803) at the end of the special-shaped pipe body (8).

3. The forming die for a large-sized special-shaped pipe according to claim 1, characterized in that: A positioning seat (5) is installed on the end surface of the upper template (1) close to the lower template (2), and the positioning seat (5) is engaged with an assembly groove (202) recessed on the corresponding end surface of the lower template (2).

4. A forming die for a large-sized special-shaped pipe according to claim 1, characterized in that: A plurality of first guide columns (4) are mounted on the upper template (1), and the first guide columns (4) engage with first limiting grooves (201) recessed on the lower template (2) for positioning.

5. The forming die for a large-sized special-shaped pipe according to claim 1, characterized in that: A plurality of second guide columns (6) are mounted on the lower template (2), and the second guide columns (6) engage with second limiting grooves (101) recessed on the upper template (1) for positioning.

6. A forming die and manufacturing method for a large-scale special-shaped pipe according to claim 1, characterized in that: An installation groove (703) for engaging and positioning with the core (3) is recessed at an opening on one side of the special-shaped mold cavity (7) of the lower mold plate (2).

7. A method for manufacturing a large-scale special-shaped pipeline according to any one of claims 1 to 6, characterized in that: The following steps are involved: Step 1: Fix the upper template (1) on the upper plate of the rubber vacuum vulcanizer, fix the lower template (2) on the transfer template of the rubber vacuum vulcanizer, and control the vulcanization temperature at 170℃-190℃ Step 2: Remove the rubber vacuum vulcanizer template and place rubber on the upper and lower surfaces of the core (3). Step 2: After placing the rubber material, move the rubber vacuum vulcanizer transfer template into the rubber vacuum vulcanizer for pressurized vulcanization, and control the pressure to 20-135Mpa, the vulcanization temperature to 170℃-190℃, and the cycle time of the hot vulcanization stage to 5-8 minutes. Step 4: The rubber vacuum vulcanizer automatically moves out the template and takes out the product.

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