Exhaust pipe bending and necking forming integrated equipment

Abstract

The utility model discloses exhaust pipe bending and necking forming integrated equipment which comprises a bottom plate, a lower die body is arranged on the bottom plate, an upper die body capable of ascending and descending is arranged on the lower die body, a lower pipe bending groove is formed in the lower die body, an upper pipe bending groove matched with the lower pipe bending groove is formed in the upper die body, and a lower pipe bending groove matched with the upper pipe bending groove is formed in the lower die body. One end of the lower pipe bending groove and one end of the upper pipe bending groove abut against a limiting piece, a necking groove is formed in the other end of the lower pipe bending groove and the other end of the upper pipe bending groove, and a necking die assembly used for being connected with an exhaust pipe bending pipe is arranged at the necking groove. According to the exhaust pipe bending and necking forming integrated equipment, through the arrangement of the lower pipe bending groove, the upper pipe bending groove, the necking groove and the necking die assembly, the operations of bending, shaping and necking of an exhaust pipe can be completed at the same time, and the shape, the size and the caliber of the bent pipe of the exhaust pipe all meet the product quality requirements; and the whole integrated equipment is simple in structure, easy to manufacture and use and beneficial to improving the production and processing efficiency of exhaust pipe products.

Description

Technical Field

[0001] This utility model relates to the field of automotive exhaust pipe manufacturing technology, specifically to an integrated device for exhaust pipe bending and necking forming. Background Technology

[0002] The exhaust pipe is a major component of the automotive exhaust system. Depending on its location, the exhaust pipe can be either a bend or a straight pipe. Bends in the exhaust pipe usually require a bending and shaping operation followed by a necking operation, which necessitates two sets of equipment.

[0003] Moreover, existing necking equipment usually performs necking operations directly on the end of the exhaust pipe bend, which makes it difficult to ensure that the necking dimensions meet product quality requirements. Summary of the Invention

[0004] The purpose of this invention is to address the problems existing in the prior art by providing an integrated device for bending and narrowing exhaust pipes.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] An integrated device for forming and bending exhaust pipes includes a base plate, on which a lower mold body is provided, and on which a liftable upper mold body is provided. The lower mold body has a lower bending groove, and the upper mold body has an upper bending groove adapted to the lower bending groove. One end of the lower bending groove and the upper bending groove abuts against a limiting member, and the other end has a narrowing groove. A narrowing mold assembly for connecting the exhaust pipe bend is provided at the narrowing groove.

[0007] This integrated exhaust pipe bending and necking forming equipment, through the setting of the lower bending groove, the upper bending groove, the necking groove, and the necking mold assembly, can simultaneously complete the bending and necking operations of the exhaust pipe, ensuring that the shape, size, and diameter of the exhaust pipe bend meet product quality requirements. Moreover, the entire integrated equipment has a simple structure, is easy to manufacture and use, and helps to improve the production and processing efficiency of exhaust pipe products.

[0008] The upper mold body and the lower mold body cooperate with each other to allow the upper bending pipe groove and the lower bending pipe groove to come together to form a complete groove of the bending pipe. Under the pressure of the upper mold body, the bending pipe can maintain its shape and be formed. At the same time, the narrowing mold assembly is pressed into the opening of the exhaust pipe bending pipe at the narrowing groove, so that the opening is narrowed, realizing automatic narrowing.

[0009] Furthermore, the constriction groove is provided on one edge of the upper mold body and the lower mold body, and the upper mold body and the lower mold body are provided with a limiting groove on the other side near the edge. The limiting groove is provided with the limiting member, and the ends of the lower bend groove and the upper bend groove both extend to the limiting groove and abut against the limiting member.

[0010] The limiting member can limit the exhaust pipe bend placed in the lower bend groove. When its end abuts against the limiting member, a part of its other end (that is, the part that needs to be narrowed) is in the narrowing groove, which helps the narrowing mold assembly to accurately narrow the position that needs to be narrowed.

[0011] Furthermore, the cross-sectional dimension of the limiting groove is larger than the cross-sectional dimension of the upper bend groove or the lower bend groove, and the limiting member is a limiting baffle that is detachably connected to the limiting groove.

[0012] Furthermore, the inner diameter of the constriction groove is larger than the inner diameter of the lower bend groove or the upper bend groove, and the central axis of the constriction groove is arranged parallel to the parting surface of the lower mold body and the upper mold body.

[0013] Furthermore, the necking mold assembly includes an outer mold sleeve, an inner mold core disposed within the outer mold sleeve, and a connecting rod connecting the outer mold sleeve and the inner mold core. The outer mold sleeve is disposed within the necking groove, and there is a space between the outer periphery of the inner mold core and the inner periphery of the outer mold sleeve for accommodating the opening of the exhaust pipe bend.

[0014] Furthermore, the lower mold body is also provided with a clearance groove that spans the lower bend groove, so that the robotic arm can automatically load or unload the exhaust pipe bend.

[0015] Furthermore, the upper mold body and the lower mold body are provided with a necking pre-pressing component on the side away from the necking groove. The necking pre-pressing component includes a lower pre-pressing plate disposed outside the lower mold body and an upper pre-pressing plate disposed outside the upper mold body. The upper pre-pressing plate and the lower pre-pressing plate are arranged opposite to each other and are provided with pre-pressing grooves.

[0016] The pre-compression assembly for the constriction can pre-compress the opening of the exhaust pipe bend in advance, forming a rough constriction shape. Then, the constriction mold assembly is used to constrict the opening. Compared with direct constriction, this method is more conducive to the forming of the diameter size, ensuring that it meets the requirements.

[0017] Furthermore, the necking pre-compression assembly also includes a support plate disposed on one side of the base plate, the support plate being provided with a plurality of support frames, and the support frames being provided with support grooves for connecting the exhaust pipe bend.

[0018] Furthermore, the upper mold body is also provided with an upper connecting plate, and a guide rod is also provided between the lower mold body and the upper mold body.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This integrated exhaust pipe bending and necking forming equipment, through the setting of the lower bending groove, the upper bending groove, the necking groove, and the necking mold assembly, can simultaneously complete the bending and necking operations of the exhaust pipe, ensuring that the shape, size, and diameter of the exhaust pipe bend meet product quality requirements; moreover, the entire integrated equipment has a simple structure, is easy to manufacture and use, and is conducive to improving the production and processing efficiency of exhaust pipe products; 2. The setting of the limiting component can limit the exhaust pipe bend placed in the lower bending groove. When its end abuts against the limiting component, the other end that needs to be necked is exactly at the necking groove, which is conducive to the necking mold assembly accurately necking the required position; 3. The setting of the necking pre-compression component can pre-compress the pipe end of the exhaust pipe bend in advance to form a rough necking shape, and then use the necking mold assembly to neck it. Compared with direct necking, this operation method is more conducive to the forming of the diameter size, ensuring that it meets the requirements. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of an integrated device for bending and narrowing exhaust pipes according to the present invention. Figure 1 ;

[0021] Figure 2 This is a three-dimensional structural diagram of an integrated device for bending and narrowing exhaust pipes according to the present invention. Figure 2 ;

[0022] Figure 3 This is a schematic diagram showing the separation of the upper mold body and the lower mold body of this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the lower mold body of this utility model;

[0024] Figure 5 This is a schematic diagram of the bottom structure of the upper mold body of this utility model;

[0025] Figure 6 This is a schematic diagram showing the two exhaust pipe bends of this utility model arranged on the lower mold body and the necking pre-compression assembly, respectively.

[0026] Figure 7 This is a schematic cross-sectional view of the necking mold assembly of this utility model;

[0027] In the diagram: 1. Base plate; 2. Lower mold body; 201. Lower bend groove; 3. Upper mold body; 301. Upper bend groove; 4. Upper connecting plate; 5. Narrowing groove; 6. Narrowing mold assembly; 601. Outer mold sleeve; 602. Inner mold core; 603. Connecting rod; 7. Limiting component; 8. Limiting groove; 9. Guide rod; 10. Relief groove; 11. Narrowing pre-compression assembly; 1101. Lower pre-compression plate; 1102. Upper pre-compression plate; 1103. Pre-compression groove; 1104. Support plate; 1105. Support frame; 1106. Support groove; 12. Exhaust pipe bend. Detailed Implementation

[0028] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0029] In the description of this utility model, it should be noted that the terms "middle", "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] like Figures 1 to 7 As shown, an integrated device for forming an exhaust pipe bend and necking includes a base plate 1, a lower mold body 2 on the base plate 1, an upper mold body 3 that can be raised and lowered on the lower mold body 2, a lower bend groove 201 on the lower mold body 2, and an upper bend groove 301 on the upper mold body 3 that is adapted to the lower bend groove 201. One end of the lower bend groove 201 and the upper bend groove 301 abuts against a limiting member 7, and the other end is provided with a necking groove 5. A necking mold assembly 6 for connecting an exhaust pipe bend 12 is provided at the necking groove 5.

[0031] This integrated exhaust pipe bending and necking forming equipment, through the setting of the lower bending groove 201, the upper bending groove 301, the necking groove 5, and the necking mold assembly 6, can simultaneously complete the bending and necking operations of the exhaust pipe, ensuring that the shape, size, and diameter of the exhaust pipe bend meet product quality requirements. Moreover, the entire integrated equipment has a simple structure, is easy to manufacture and use, and helps to improve the production and processing efficiency of exhaust pipe products.

[0032] The upper mold body 3 and the lower mold body 2 cooperate with each other to allow the upper bending pipe groove 301 and the lower bending pipe groove 201 to come together to form a complete groove of the bending pipe. Under the pressure of the upper mold body, the bending pipe can maintain its shape and be formed. At the same time, the narrowing mold assembly 6 is pressed into the opening of the exhaust pipe bending pipe at the narrowing groove 5, so that the opening is narrowed, realizing automatic narrowing.

[0033] The limiting member 7 can limit the exhaust pipe bend 12 placed in the lower bend groove 201. When its end abuts against the limiting member, a part of its other end (that is, the part that needs to be narrowed) is located at the narrowing groove 5, which is conducive to the narrowing mold assembly accurately narrowing the position that needs to be narrowed.

[0034] Furthermore, the constriction groove 5 is provided at the edge of one side of the upper mold body 3 and the lower mold body 2, and the upper mold body 3 and the lower mold body 2 are provided with a limiting groove 8 near the edge on the other side. The limiting groove 8 is provided with the limiting member 7. The ends of the lower bend groove 201 and the upper bend groove 301 extend to the limiting groove 8 and abut against the limiting member 7.

[0035] The limiting grooves 8 are two arranged correspondingly at the top and bottom. The limiting member 7 is fixedly connected to the limiting groove of the lower mold body 2. When the upper mold body 3 is pressed down, the limiting groove below the upper mold body will also automatically connect to the limiting member to form a limit on the entire end face of the pipe opening.

[0036] Furthermore, the cross-sectional dimensions of the limiting groove 8 are larger than those of the upper bend groove 301 or the lower bend groove 201, and the depth and width are also larger than those of the bend groove. The limiting member 7 is a limiting baffle that is detachably connected to the limiting groove 8.

[0037] The bottom of the limiting baffle is connected to the bottom of the limiting groove 8 by bolts. The two side walls of the limiting baffle have a certain slope so that they can be inserted into the limiting groove of the upper mold body 3.

[0038] Furthermore, the inner diameter of the constriction groove 5 is larger than the inner diameter of the lower bend groove 201 or the upper bend groove 301, so that it can accommodate the outer mold sleeve 601 of the constriction mold assembly 6; the central axis of the constriction groove 5 is arranged parallel to the parting surface of the lower mold body 2 and the upper mold body 3. If the lower mold body 2 is rectangular, the central axis can be parallel to the long side of the rectangle. This arrangement is conducive to the constriction mold assembly being pressed horizontally into the constriction groove perpendicular to the side walls of the lower mold body and the upper mold body.

[0039] Furthermore, the constriction mold assembly 6 includes an outer mold sleeve 601, an inner mold core 602 disposed within the outer mold sleeve 601, and a connecting rod 603 connecting the outer mold sleeve 601 and the inner mold core 602. The outer mold sleeve 601 is disposed within the constriction groove 5, and there is a space between the outer periphery of the inner mold core 602 and the inner periphery of the outer mold sleeve 601 to accommodate the opening of the exhaust pipe bend 12.

[0040] Specifically, in combination Figure 7 As shown, the outer mold sleeve 601 has an open end and a central through hole at the other end. The inner mold core 602 is fitted inside the outer mold sleeve 601 and connected to the connecting rod 603 by bolts. The bolts can pass through the central through hole. This allows the connecting rod 603 to move both the inner mold core 602 and the outer mold sleeve 601 simultaneously when it moves. There is also a space between the outer mold sleeve 601 and the inner mold core 602 to accommodate the pipe wall of the pipe opening. The other end of the connecting rod 603 has a slot for connecting to a cylinder, using the cylinder's thrust to move the connecting rod.

[0041] After the upper mold body 3 is closed, the cylinder pushes the connecting rod 603 to move the inner mold core 602 and the outer mold sleeve 601 toward the narrowing groove 5, and presses the inner mold core 602 into the opening of the exhaust pipe bend. The narrowing and shaping operation is completed under the joint action of the inner mold core and the outer mold sleeve.

[0042] Furthermore, the lower mold body 2 is also provided with a clearance groove 10 that spans the lower bend groove 201.

[0043] The relief groove 10 is designed to facilitate the robotic arm's automatic loading or unloading of the exhaust pipe bend. This relief groove 10 can accommodate the robotic arm's gripper, preventing it from colliding with the lower mold body. Such relief grooves are not required on either side of the upper bend groove of the upper mold body.

[0044] Furthermore, a necking pre-pressing assembly 11 is provided on the side of the upper mold body 3 and the lower mold body 2 away from the necking groove 5. The necking pre-pressing assembly 11 includes a lower pre-pressing plate 1101 disposed outside the lower mold body 2 and an upper pre-pressing plate 1102 disposed outside the upper mold body 3. The upper pre-pressing plate 1102 and the lower pre-pressing plate 1101 are arranged opposite to each other and are provided with a pre-pressing groove 1103.

[0045] The pre-compression component 11 allows for pre-compression of the exhaust pipe bend in advance, forming a rough bend shape. Then, the bend is reduced using the bend mold component. Compared to direct bend reduction, this method is more conducive to the forming of the diameter size, ensuring that it meets the requirements.

[0046] The upper pre-press plate 1102 will move up and down together with the upper mold body 3. In the actual processing, two exhaust pipe bends will be processed. One is an exhaust pipe bend that has been pre-pressed, which will be placed in the lower bend groove. The other is an exhaust pipe bend to be pre-pressed, whose pipe opening will be set at the lower pre-press plate. When the upper mold body closes the mold, these two exhaust pipe bends will be processed together.

[0047] The lower preload plate 1101 can be connected to the lower mold body or the base plate by bolts; the upper preload plate 1102 can be connected to the upper mold body or the upper connecting plate above the upper mold body by bolts.

[0048] Furthermore, the necking pre-compression assembly 11 also includes a support plate 1104 disposed on one side of the base plate. The support plate 1104 is provided with a plurality of support frames 1105, and the support frames 1105 are provided with support grooves 1106 for connecting the exhaust pipe bend 12. The arrangement of the support plate, the support frames, and the support grooves can support the exhaust pipe bend to be necked and pre-compressed. This support structure is both simple and practical.

[0049] Furthermore, the upper mold body 3 is also provided with an upper connecting plate 4, and a guide rod 9 is also provided between the lower mold body 2 and the upper mold body 3.

[0050] The upper connecting plate 4 facilitates the connection and installation of the upper mold body 3, and can also be used to connect lifting drive components, such as hydraulic cylinders, pneumatic cylinders or electric cylinders, to realize the lifting movement of the upper mold body; the guide rod 9 serves as a guide and also as a positioning function, which is conducive to accurate mold closing. The guide rod can be connected to the lower part of the upper mold body, and the lower mold body is provided with a guide hole that connects to the guide rod.

[0051] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated device for bending and narrowing exhaust pipes, comprising a base plate, a lower mold body on the base plate, and a liftable upper mold body on the lower mold body, characterized in that, The lower mold body is provided with a lower bending pipe groove, and the upper mold body is provided with an upper bending pipe groove that is adapted to the lower bending pipe groove. One end of the lower bending pipe groove and the upper bending pipe groove abuts against a limiting member, and the other end is provided with a narrowing groove. A narrowing mold assembly for connecting the exhaust pipe bend is provided at the narrowing groove.

2. The integrated equipment for exhaust pipe bending and necking forming according to claim 1, characterized in that, The constriction groove is located on one edge of the upper mold body and the lower mold body. The upper mold body and the lower mold body are provided with a limiting groove on the other side near the edge. The limiting groove is provided with the limiting member. The ends of the lower bend groove and the upper bend groove extend to the limiting groove and abut against the limiting member.

3. The integrated equipment for exhaust pipe bending and necking forming according to claim 2, characterized in that, The cross-sectional dimension of the limiting groove is larger than that of the upper bend groove or the lower bend groove, and the limiting member is a limiting baffle that is detachably connected to the limiting groove.

4. The integrated equipment for exhaust pipe bending and necking forming according to claim 1, characterized in that, The inner diameter of the constriction groove is larger than the inner diameter of the lower bend groove or the upper bend groove, and the central axis of the constriction groove is arranged parallel to the parting surface of the lower mold body and the upper mold body.

5. The integrated equipment for exhaust pipe bending and necking forming according to claim 1, characterized in that, The constriction mold assembly includes an outer mold sleeve, an inner mold core disposed within the outer mold sleeve, and a connecting rod connecting the outer mold sleeve and the inner mold core. The outer mold sleeve is disposed within the constriction groove, and there is a space between the outer periphery of the inner mold core and the inner periphery of the outer mold sleeve for accommodating the opening of the exhaust pipe bend.

6. The integrated equipment for exhaust pipe bending and necking forming according to claim 1, characterized in that, The lower mold body is also provided with a clearance groove that spans the lower bend groove.

7. The integrated equipment for exhaust pipe bending and necking forming according to claim 1, characterized in that, The upper mold body and the lower mold body are further provided with a necking pre-pressing component on the side away from the necking groove. The necking pre-pressing component includes a lower pre-pressing plate disposed outside the lower mold body and an upper pre-pressing plate disposed outside the upper mold body. The upper pre-pressing plate and the lower pre-pressing plate are arranged opposite to each other and are provided with pre-pressing grooves.

8. The integrated equipment for exhaust pipe bending and necking forming according to claim 7, characterized in that, The pre-compression assembly also includes a support plate disposed on one side of the base plate. The support plate is provided with several support frames, and the support frames are provided with support grooves for connecting the exhaust pipe bend.

9. The integrated equipment for exhaust pipe bending and necking forming according to claim 1, characterized in that, The upper mold body is also provided with an upper connecting plate, and a guide rod is also provided between the lower mold body and the upper mold body.

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