Quickly-remodeling GBD reducing die

Abstract

The invention belongs to the technical field of exhaust systems of commercial fuel vehicles, and particularly relates to a GBD reducing die capable of achieving rapid remodeling. The GBD reducing die capable of achieving rapid remodeling comprises a plurality of die blocks, each die block comprises a die petal assembly and a back plate, the die petal assemblies are connected with the back plates in a buckled mode, the die petal assemblies can relatively slide in the length direction of the back plates, plungers are arranged on the back plates and used for positioning the die petal assemblies, safety columns are further arranged on the back plates, and the safety columns are connected with the die petal assemblies in a buckled mode. The safety column is used for limiting the first end of the die petal assembly, and the second end of the die petal assembly is provided with a first hanging ring. The die petal assemblies are connected with the back plate in a buckled mode, sharing of the back plate can be achieved, only the die petal assemblies need to be replaced during replacement, the back plate does not need to be replaced, rapid remodeling can be achieved, the weight of the die can be reduced, and the development cost of the die can be reduced.

Description

Technical Field

[0001] This invention belongs to the technical field of exhaust systems for commercial fuel vehicles, specifically relating to a quick-change GBD diameter reduction mold. Background Technology

[0002] GBD refers to the unit gap volume density. The GBD value in the exhaust system is the value of the liner weight divided by the liner area and the product of the group gaps. Our invention here is a diameter reduction mold that can form this value.

[0003] The existing diameter reduction die structure is as follows: Figures 13-17 As shown, the system comprises 16 identical modules arranged in a circle to form an equilateral structure with a circular inner surface and 16 faces on the outer ring. The equilateral structure is then cut along its edges using wire cutting, with a 2mm thickness reduction between cuts. Each module consists of a back plate and a mold flap assembly. The back plate is composed of 16 identical T-shaped strips arranged in a circular pattern. The T-shaped structure connects to the diameter reduction equipment. The mold flap assembly is positioned to the back plate using two positioning posts and connected by four screws. A lifting ring is screwed onto the head of the back plate for easy installation and removal of the mold. This forms a single module (one mold flap + one back plate + one lifting ring).

[0004] status quo: 1. The changeover process involves manually removing the 16 modular components one by one from the diameter reduction equipment, and then inserting the molds required for the product being changed into the equipment one by one. Each changeover requires 16 insertions and removals. Each module weighs approximately 8 kg, the back plate approximately 5 kg, and the mold piece approximately 3 kg. Each changeover is a significant physical challenge for the workers. Furthermore, each changeover requires two employees, resulting in a long changeover time and a large number of personnel involved.

[0005] 2. Each mold development requires the development of a back plate and mold segments. The back plate and mold segments need to be developed simultaneously, with one mold segment paired with one back plate for easy future adjustments. However, the back plates are generally of the same size, and their processing is difficult due to their length and precision requirements. Moreover, the price accounts for 2 / 3 of the total cost of the mold set. The disadvantage is that this is an invisible and meaningless increase. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a quick-change GBD diameter reduction mold. The mold segment assembly of this invention is snap-fitted to the back plate, enabling the back plate to be shared. During replacement, only the mold segment assembly needs to be replaced, without replacing the back plate, thus achieving quick changeover and reducing mold weight and development costs.

[0007] To achieve the above technical purposes, the technical scheme adopted by the embodiment of the present application is: The GBD reducing diameter die for quick type replacement comprises a plurality of modules, each of which comprises a die segment assembly and a back plate, the die segment assembly is buckled with the back plate, the die segment assembly can slide along the length direction of the back plate, a plunger is arranged on the back plate for positioning the die segment assembly, a safety column is further arranged on the back plate for limiting the first end of the die segment assembly, and a first lifting ring is arranged at the second end of the die segment assembly.

[0008] Further, the die segment assembly comprises a die and a fixed plate, the die and the fixed plate are connected through positioning columns and bolts, a gasket is arranged between the die and the fixed plate, and the first lifting ring is arranged on the fixed plate.

[0009] Further, the thickness or number of the gasket is replaced as needed to adjust the height of the die segment assembly.

[0010] Further, the first lifting ring is arranged at one end of the fixed plate, the other end of the fixed plate is provided with an inclined surface with an inclination angle of 35°-45°, the inclined surface is arranged on the side away from the die, and the highest point of the inclined surface is 0-1mm higher than the head of the plunger in a natural state.

[0011] Further, the side of the fixed plate away from the die is provided with a T-shaped groove, the shape of the back plate is matched with the T-shaped groove, one side of the back plate is inserted into the T-shaped groove and buckled with the T-shaped groove, and the side of the back plate away from the die is inserted into a positioning groove inside the reducing diameter equipment.

[0012] Further, a second lifting ring is arranged on the back plate, the second lifting ring is located at the same end of the module as the first lifting ring, and the two are arranged in parallel.

[0013] Further, the plunger and the second lifting ring are arranged at the same end of the back plate, the fixed plate is provided with a die segment hole, and the size of the die segment hole is matched with that of the plunger.

[0014] Further, the side of the die away from the fixed plate is an arc surface.

[0015] The technical scheme provided by the embodiment of the present application has the following beneficial effects: 1. In the GBD reducing diameter die for quick type replacement, the die segment assembly is buckled with the back plate, the back plate can be shared, only the die segment assembly needs to be replaced when replacement is performed, the back plate does not need to be replaced, the die can be quickly replaced, and the weight of the die can be reduced and the development cost of the die can be reduced.

[0016] 2. The quick-change GBD reducing die of the present application comprises several modules, and the die segment assembly of the module is designed to realize self radial fine adjustment.

[0017] 3. The die segment assembly of the present application is connected with the back plate by buckle connection, and the die segment assembly can slide along the length direction of the back plate, the spring structure of the plunger can realize quick disassembly of the die segment assembly and the back plate, and the inclined surface structure of the fixed plate in the die segment assembly can realize quick assembly, thereby improving work efficiency and reducing labor intensity. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic view of the quick-change GBD reducing die in the embodiment of the present application.

[0019] Figure 2 is Figure 1 a top view of the quick-change GBD reducing die.

[0020] Figure 3 is Figure 1 a structural schematic view of a single module in the quick-change GBD reducing die.

[0021] Figure 4 is Figure 3 a top view of the single module.

[0022] Figure 5 is Figure 4 a B-B view of the single module.

[0023] Figure 6 is Figure 4 a right view of the single module.

[0024] Figure 7 is Figure 4 a structural schematic view of the die segment assembly in the single module.

[0025] Figure 8 is Figure 4 a sectional view of the die segment assembly in the single module.

[0026] Figure 9 is Figure 4 a right view of the die segment assembly in the single module.

[0027] Figure 10 is Figure 4 a structural schematic view of the back plate in the single module.

[0028] Figure 11 is Figure 4 a sectional view of the back plate in the single module.

[0029] Figure 12 is Figure 4Right view of the back panel in a single module.

[0030] Figure 13 This is a schematic diagram of the GBD diameter reduction mold for quick changeover in the comparative example of this invention.

[0031] Figure 14 yes Figure 13 Top view of the GBD diameter reduction die for quick changeover.

[0032] Figure 15 yes Figure 13 A schematic diagram of the structure of a single module in a GBD diameter reduction die for quick changeover.

[0033] Figure 16 yes Figure 13 AA cross-sectional view of a single module.

[0034] Figure 17 yes Figure 15 A cross-sectional view of the backplane in a single module.

[0035] Explanation of reference numerals in the attached drawings: 1-First lifting ring; 2-Plunger; 3-Positioning pin; 4-Mold assembly; 5-Back plate; 6-Safety pin; 7-Second lifting ring; 41-Mold; 42-Gasket; 43-Fixing plate; 44-Ceiling; 45-Bolt; 430-T-groove; 431-Mold hole. Detailed Implementation

[0036] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "inner" and "outer", "upper" and "lower", "left" and "right" is usually based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this invention.

[0037] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0038] Example 1 like Figures 1-2 As shown, a quick-change GBD diameter reduction mold includes 16 modules. The 16 identical modules are arranged in a circle to form an equilateral structure with a circular inner cavity surface and 16 faces on the outer ring. Then, wire cutting is used to cut the equilateral shape into equal parts along its edges, and the thickness is removed by cutting the gap by 2mm.

[0039] like Figures 3-6As shown in the drawings, each module comprises a die segment assembly 4 and a back plate 5, the die segment assembly 4 is snap-connected with the back plate 5, and the die segment assembly 4 can slide along the length direction of the back plate 5.

[0040] The detachable connection between the die segment assembly 4 and the back plate 5 enables the sharing of the back plate 5, and when adapting to products of different sizes, only the die segment assembly 4 can be replaced while the back plate 5 is retained. Since the back plate 5 is of the same size, and the back plate 5 is difficult to process due to the length and precision, and the price accounts for 2 / 3 of the cost of the whole mold, therefore, the sharing of the back plate 5 can greatly reduce the cost.

[0041] As shown in the drawings, Figure 10 and 11 The back plate 5 is provided with a plunger 2 for positioning the die segment assembly 4, so as to control the relative position of the die segment assembly 4 on the back plate 5.

[0042] The plunger 2 is a common standard part, so the structure of the plunger 2 will not be described here.

[0043] As shown in the drawings, Figures 3-5 The back plate 5 is also provided with a safety column 6 for limiting the lower end of the die segment assembly 4. For safety reasons, when the plunger 2 fails, that is, the head of the plunger 2 cannot be ejected, the die segment assembly 4 will fall down along the back plate 5 due to gravity, and the addition of the safety column 6 on the back plate 5 can prevent the die segment assembly 4 from falling down.

[0044] The upper end of the die segment assembly 4 is provided with a first lifting ring 1, which facilitates the separation of the die segment assembly 4 and the back plate 5.

[0045] Specifically, as shown in the drawings, Figures 7-9 The die segment assembly 4 comprises a mold 41 and a fixed plate 43, the mold 41 and the fixed plate 43 are connected through positioning columns 3 and bolts, a gasket 42 is arranged between the mold 41 and the fixed plate 43, and the first lifting ring 1 is arranged on the fixed plate 43.

[0046] The side of the mold 41 away from the fixed plate 43 is an arc surface. The arrangement of the arc surface can prevent the mold 41 from damaging the tubular product.

[0047] The thickness or number of the gasket 42 can be replaced as needed to adjust the height of the die segment assembly 4. When assembling, the gasket with a thickness of 0.5mm can be pre-placed, and the purpose is to adjust the height of the die segment if the die segment assembly is uneven during production by increasing or decreasing the gasket.

[0048] The first hanging ring 1 is arranged at one end of the fixed plate 43, and the other end of the fixed plate 43 is provided with an inclined surface 44 with an inclination angle of 35°-45°, the inclined surface 44 is arranged on the side away from the mold 41, and the highest point of the inclined surface 44 is 0-1 mm higher than the head of the plunger 2 in a natural state.

[0049] When the mold segment assembly 4 is inserted into the back plate 5 from the side of the first hanging ring 1, because the front end of the mold segment assembly 4 is provided with the inclined surface 44, the head of the plunger 2 can be forced to retreat into the interior of the plunger 2, and when the mold segment hole 431 continues to move to the position of the head of the plunger 2, the head of the plunger 2 will be inserted into the mold segment hole 431 due to the spring effect in the plunger 2, thereby forming a positioning locking. The arrangement of the inclined surface 44 can realize quick assembly of the mold segment assembly 4 on the back plate 5, thereby improving work efficiency.

[0050] In addition to the positioning function, the plunger 2 also has the function of realizing quick separation of the mold segment assembly 4 and the back plate 5, when it is desired to separate, a cylindrical head with a diameter smaller than the mold segment hole 431 is used to push the head of the plunger 2, so that the head of the plunger 2 is retracted into the interior of the plunger 2, and at the same time, the first hanging ring 1 is held and moved upward, thereby realizing separation of the mold segment assembly 4 and the back plate 5.

[0051] The side of the fixed plate 43 away from the mold 41 is provided with a T-shaped groove 430, the back plate 5 is shaped to be matched with the T-shaped groove 430, one side of the back plate 5 is inserted into the T-shaped groove 430 and is buckled and connected with the T-shaped groove 430, and the side of the back plate 5 away from the mold 41 is inserted into a positioning groove in the interior of the equipment.

[0052] Specifically, as shown in Figure 12 , the back plate 5 is integrally formed, and the back plate 5 includes a first connecting portion 51 and a second connecting portion 52 along the length direction thereof, wherein the first connecting portion 51 is matched with the T-shaped groove 430 of the mold segment assembly 4, and the two are buckled and connected; and the second connecting portion 52 is inserted into a positioning groove in the interior of the diameter-reducing equipment.

[0053] As shown in Figure 6 and 11 , the back plate 5 is provided with a second hanging ring 7, the second hanging ring 7 is located at the same end of the mold as the first hanging ring 1, and the two are arranged in parallel.

[0054] The plunger 2 and the second hanging ring 7 are arranged at the same end of the back plate 5, and the fixed plate 43 is provided with a mold segment hole 431, the mold segment hole 431 is matched with the shape of the plunger 2.

[0055] When in use, the 16 modules are respectively inserted into the positioning slots inside the diameter-reducing equipment. Since the positioning slots of the equipment are also distributed in a circle, the inner surfaces of the 16 module petal assemblies 4 (i.e. the side of the mold 41 away from the fixed plate 43) form a complete circle. The inner contraction and expansion of the positioning slots are driven by the up-and-down movement of the diameter-reducing equipment, so that the diameter of the circle formed by the inner wall of the diameter-reducing mold changes. The circle of the inner surface of the module petal assembly 4 becomes smaller as the upper surface of the equipment moves upward, and becomes larger as the upper surface of the equipment moves downward.

[0056] Comparative example As shown in Figure 13 and Figure 14 , a GBD diameter-reducing mold includes 16 modules, each of which includes a module petal assembly 4 and a back plate 5, and the module petal assembly 4 is fixedly connected with the back plate 5.

[0057] As shown in Figures 15-16 , the module petal assembly 4 includes a mold 41, and the mold 41 and the back plate 5 are fixedly connected through positioning columns 3 and bolts 45.

[0058] As shown in Figure 17 , the back plate 5 has a T-shaped structure and is inserted into the positioning slots inside the diameter-reducing equipment through a second connecting portion 52.

[0059] In the embodiment of the present application, the fixing mode of the module petal assembly 4 and the back plate 5 is changed from screwing in the comparative example to sliding fit, so that the back plate 5 can be shared, and when the mold is changed, only the module petal assembly 4 needs to be replaced, which can greatly reduce the development cost of the back plate 5. In addition, the snap connection mode of the module petal assembly 4 and the back plate 5 can realize quick installation and quick disassembly, improve work efficiency, and reduce labor intensity.

[0060] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the examples, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, and they should be covered in the scope of the claims of the present application.

Claims

1. A quick-change GBD diameter reduction die, characterized in that, It includes several modules, each module including a mold flap assembly (4) and a back plate (5). The mold flap assembly (4) is snapped to the back plate (5). The mold flap assembly (4) can slide relative to the back plate (5) along its length. A plunger (2) is provided on the back plate (5) for positioning the mold flap assembly (4). A safety post (6) is also provided on the back plate (5) for limiting the first end of the mold flap assembly (4). A first lifting ring (1) is provided on the second end of the mold flap assembly (4).

2. The GBD diameter reduction die for quick changeover according to claim 1, characterized in that, The mold assembly (4) includes a mold (41) and a fixing plate (43). The mold (41) and the fixing plate (43) are connected by positioning pins (3) and bolts. A gasket (42) is provided between the mold (41) and the fixing plate (43). The first lifting ring (1) is provided on the fixing plate (43).

3. The GBD diameter reduction die for quick changeover according to claim 1, characterized in that, The thickness or number of the gaskets (42) can be changed as needed to adjust the height of the mold panel assembly (4).

4. The GBD diameter reduction die for quick changeover according to claim 2, characterized in that, The first lifting ring (1) is set at one end of the fixed plate (43), and the other end of the fixed plate (43) is provided with an inclined surface (44) with an inclination angle of 35°-45°. The inclined surface (44) is set on the side away from the mold (41), and the highest point of the inclined surface (44) is 0-1mm higher than the head of the plunger (2) in its natural state.

5. The GBD diameter reduction die for quick changeover according to claim 2, characterized in that, The fixing plate (43) has a T-shaped groove (430) on the side away from the mold (41). The shape of the back plate (5) is adapted to the T-shaped groove (430). One side of the back plate (5) is inserted into the T-shaped groove (430) and snapped together with the T-shaped groove (430). The side of the back plate (5) away from the mold (41) is inserted into the positioning groove inside the diameter reduction device.

6. The GBD diameter reduction die for quick changeover according to claim 2, characterized in that, A second lifting ring (7) is provided on the back plate (5). The second lifting ring (7) and the first lifting ring (1) are located at the same end of the module and are arranged in parallel.

7. The GBD diameter reduction die for quick changeover according to claim 6, characterized in that, The plunger (2) and the second lifting ring (7) are located at the same end of the back plate (5). The fixing plate (43) is provided with a mold flap hole (431), which is adapted to the size of the plunger (2).

8. The GBD diameter reduction die for quick changeover according to claim 2, characterized in that, The side of the mold (41) away from the fixing plate (43) is an arc-shaped surface.

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