A muffler cotton filling mold

Abstract

The application provides a muffler cotton filling mold, which comprises an upper mold and a lower mold, wherein the upper mold comprises a first bottom plate and at least one barrel, one end of the barrel is fixedly connected to one side of the first bottom plate close to the lower mold, and the barrel extends in a first direction; the lower mold comprises a second bottom plate, the second bottom plate is arranged in the first direction and is spaced apart from the first bottom plate, a supporting assembly is fixedly connected to one side of the second bottom plate close to the upper mold, and a fixing assembly is fixedly connected to the supporting assembly and used for fixing the muffler. The muffler cotton filling mold provided by the embodiment of the application can uniformly fill the muffling cotton into the internal space of the muffler, improve the uniformity of the filling density, ensure that the pore structure in the muffling cotton is more stable and reasonable, and improve the sound absorption performance of the muffler.

Description

Technical Field

[0001] This invention belongs to the field of engine exhaust system technology, and particularly relates to a muffler filling mold. Background Technology

[0002] Silencers, as crucial noise reduction devices in modern industry and transportation, directly impact people's quality of life and production efficiency. With the acceleration of industrialization and increasing public concern about noise pollution, the design and manufacturing of silencers face higher demands. Sound-absorbing cotton, as a core component of silencers, directly affects the overall performance of the silencer through its performance and manufacturing process. However, existing direct-filling processes for sound-absorbing cotton in silencers suffer from low filling efficiency and uneven filling, easily leading to localized dense areas or gaps after filling, thus affecting the silencer's sound absorption performance. Summary of the Invention

[0003] To address at least one technical problem in the prior art, embodiments of the present invention provide a muffler filling mold with high filling efficiency and good filling effect. To achieve the above technical objectives, the technical solution adopted by embodiments of the present invention is as follows: This invention provides a muffler filling mold, comprising an upper mold and a lower mold: The upper mold includes: First base plate, At least one gun barrel, one end of which is fixedly connected to the side of the first base plate near the lower mold, and the gun barrel extends along a first direction; The lower mold includes: The second base plate is spaced apart from the first base plate along a first direction; A support component is fixedly connected to the side of the second base plate near the upper mold; A fixing component is fixedly connected to the support component, and the fixing component is used to fix the muffler.

[0004] Furthermore, the upper mold also includes an assembly conduit, the assembly conduit comprising: The first section has a plurality of first assembly holes on the first base plate, and the first section of the assembly guide tube can be inserted into the first assembly holes; The second section has a first through groove and a second through groove. The first through groove extends axially along the assembly guide tube, and the second through groove extends circumferentially along the assembly guide tube. The first through groove and the second through groove are in communication. One end of the second section is opposite to the first section, and keyholes are provided on both sides of the first through groove. The muffler filling mold also includes an installation key that can be inserted into the keyhole.

[0005] Furthermore, a step is provided on the outer side of the assembly conduit and between the first section and the second section. The step is circumferentially connected to the assembly conduit, and a plurality of first mounting holes are provided on the step. Any one of the first mounting holes penetrates the step along the axial direction of the assembly conduit. The first base plate is provided with a plurality of second assembly holes, the position and number of which correspond one-to-one with the position and number of the first mounting holes; The muffler filling mold also includes a plurality of first mounting bolts, each of which passes through a first mounting hole and is threadedly connected to a second assembly hole.

[0006] Furthermore, the upper mold also includes: A contoured base plate is disposed on the side of the first base plate near the second base plate and spaced apart from the first base plate. The contoured base plate is provided with a number of contoured through holes and clearance holes. The position and number of the contoured through holes correspond one-to-one with the position and number of the gun barrels. Any gun barrel passes through a contoured through hole. The clearance holes are used to avoid the silencer tube in the silencer. A sleeve, one end of which is fixedly connected to the first base plate and the other end of which is fixedly connected to the contour base plate.

[0007] Furthermore, the upper mold also includes: An intermediate base plate is disposed between the first base plate and the contour base plate. The intermediate base plate is provided with a plurality of intermediate through holes. The number and position of the intermediate through holes correspond one-to-one with the number and position of the gun barrels. Any gun barrel passes through one of the intermediate through holes. The sleeve includes: The first sleeve has one end fixedly connected to the first base plate and the other end fixedly connected to the intermediate base plate. The second sleeve has one end fixedly connected to the intermediate base plate and the other end fixedly connected to the contour base plate.

[0008] Furthermore, the end of the first sleeve and / or the end of the second sleeve is provided with a connecting block, and the connecting block is provided with a plurality of second mounting holes, the second mounting holes penetrating the connecting block along the first direction; The first base plate, the intermediate base plate, and the contour base plate are provided with a plurality of third assembly holes, and the number and position of the third assembly holes correspond one-to-one with the number and position of the second mounting holes. The muffler filling mold also includes several second mounting bolts, each of which passes through a second mounting hole and is threadedly connected to a third assembly hole.

[0009] Furthermore, a guide block is also provided on the side of the intermediate base plate near the second base plate; And / or, the end of the barrel near the second base plate is inclined at an angle of 30 to 60°; And / or, the end of the barrel near the second base plate is bent toward the side at an angle of 10 to 30°.

[0010] Furthermore, in the lower mold, the second base plate has the following features on the side near the first base plate: The adjusting plate is fixedly connected to the second base plate; The second contour base plate is located on the side of the adjustment plate opposite to the second base plate; The guide post is located in the middle of the second contour base plate. The positioning block is located on the side of the second base plate near the first base plate and on the outside of the adjustment plate.

[0011] Furthermore, the lower mold also includes: A backing plate is provided on the side of the second base plate near the first base plate and spaced apart from the second base plate. One side of the backing plate has a groove, and the fixing assembly is fixedly connected to the side of the backing plate near the groove. The mounting column extends along a first direction, with one end of the mounting column fixedly connected to the second base plate and the other end fixedly connected to the backing plate.

[0012] Furthermore, the fixing component includes: The bolt cutters include a fixed arm and a movable arm, the fixed arm being fixedly connected to the side of the backing plate near the groove. A fixing rod is used to securely connect the movable arm of the bolt clamp.

[0013] The beneficial effects of the technical solution provided by the embodiments of the present invention are as follows: The muffler filling mold provided in this embodiment of the invention, through an upper mold and a lower mold that can be close to or far apart from each other, and with several filling gun barrels set on the upper mold, facilitates the uniform filling of the muffler's internal space with sound-absorbing cotton, improves the uniformity of the filling density, ensures a more stable and reasonable pore structure inside the sound-absorbing cotton, improves the muffler's sound absorption performance, enhances product consistency and reliability, reduces subsequent trimming and adjustment time, and enables the filled muffler to meet the NVH requirements of China VI emission standards. This structure improves production efficiency and reduces development costs. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the installation of the muffler filling mold in an embodiment of the present invention.

[0015] Figure 2 This is a schematic diagram of the structure of the muffler filling mold in an embodiment of the present invention.

[0016] Figure 3 This is a schematic diagram of the upper mold in an embodiment of the present invention.

[0017] Figure 4 This is a schematic diagram of the assembly of the conduit in an embodiment of the present invention.

[0018] Figure 5 This is a schematic diagram of the lower mold in an embodiment of the present invention.

[0019] Figure 6 This is a top view of the lower mold in an embodiment of the present invention. Detailed Implementation

[0020] 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.

[0021] In the description of the embodiments of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "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 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, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can also refer to the internal connection of two components; and they can refer to a wireless connection or a wired connection. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0023] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0024] This invention provides a muffler filling mold, comprising an upper mold 1 and a lower mold 2: The upper mold 1 includes: First base plate 11, A plurality of gun barrels 12, one end of which is fixedly connected to the side of the first base plate 11 near the lower mold 2, and the gun barrels 12 extend along the first direction A; The lower mold 2 includes: The second base plate 21 is disposed at a distance from the first base plate 11 along the first direction A; Support component 22 is fixedly connected to the side of the second base plate 21 near the upper mold 1; The fixing component 23 is fixedly connected to the support component 22, and the fixing component 23 is used to fix the muffler.

[0025] In a specific embodiment, such as Figure 1 , Figure 2 and Figure 3 As shown, the first base plate 11 and the second base plate 21 are spaced apart in the vertical direction. The gun barrel 12 is fixedly connected to the lower side of the first base plate 11. Any of the gun barrels 12 extends in the vertical direction. The support assembly 22 is provided on the upper side of the second base plate 21. The fixing assembly 23 is provided on the support assembly 22.

[0026] The number and position of the gun barrels 12 are not limited. It is understood that the number and position of the gun barrels 12 can be adjusted adaptively according to the structure and shape of the silencer. The more gun barrels there are and the more evenly they are distributed, the better it is to improve the filling efficiency and the uniformity of filling.

[0027] During operation, firstly, before filling with cotton, the upper mold 1 and the lower mold 2 are positioned far apart. The silencer is placed on the second base plate 21 of the lower mold 2, and the silencer is fixed to the support assembly 22 by the fixing assembly 23. Then, the upper mold 1 and the lower mold 2 are brought closer together, ensuring that the barrel 12 is inserted into the internal chamber of the silencer and that the lower end of the barrel 12 is close to the bottom of the silencer chamber. Finally, the silencer is filled with silencing cotton through the barrel 12, while the upper mold 1 and the lower mold 2 are moved away from each other. This process of filling with cotton while moving away from each other achieves continuous and uniform filling of the silencer's internal chamber with silencing cotton. This structure ensures that the filling pressure and the flow rate of the silencing cotton are controllable, thereby avoiding uneven filling of the silencing cotton and preventing large local density differences during the filling process, thus ensuring the sound absorption performance of the silencer.

[0028] One end of the barrel 12 is fixedly connected to the first bottom plate, and the connection method is not limited. In a specific embodiment, the outer wall of the end of the barrel 12 is welded to the first bottom plate 11.

[0029] In another specific embodiment, the first base plate 11 is provided with a threaded hole, and the end of the gun barrel 12 is provided with an external thread, so that the end of the gun barrel 12 can be screwed into the threaded hole, thereby fixing the gun barrel 12 to the first base plate 11.

[0030] In another specific embodiment, the upper mold 1 further includes an assembly conduit 13, the assembly conduit 13 comprising: The first segment 131 has a plurality of first assembly holes 11a on the first base plate 11, and the first segment 131 of the assembly guide tube 13 can be inserted into the first assembly holes 11a. The second segment 132 has a first through groove 133 and a second through groove 134. The first through groove 133 extends axially along the assembly guide tube 13, and the second through groove 134 extends circumferentially along the assembly guide tube 13. The first through groove 133 and the second through groove 134 communicate with each other. One end of the second segment 132 is opposite to the first segment 131, and keyholes 135 are provided on both sides of the first through groove 133. The muffler filling mold also includes an installation key, which can be inserted into the keyhole 135.

[0031] like Figure 4 As shown, the upper section of the assembly guide tube 13 is the first section 131, and the lower section is the second section 132. The first section 131 can be inserted into the first assembly hole 11a, thereby fixing the assembly guide tube 13 to the first base plate 11. The lower end of the second section 132 and each side of the first through groove 133 are provided with a key hole 135. Before filling with cotton, the upper end of the gun barrel 12 is inserted into the second section 132, and then the mounting key is inserted into the two key holes 135, thereby fixing the assembly guide tube 13 to the gun barrel 12. The gun barrel 12 is then fixed to the first base plate 11 through the assembly guide tube 13. The structure is simple, the gun barrel 12 is easy to disassemble, and it is beneficial for later maintenance.

[0032] The upper end of the gun barrel 12 is inserted into the lower end of the assembly guide tube 13, and the assembly guide tube 13 is fixedly connected to the gun barrel 12, thereby ensuring the stability of the gun barrel 12 during the filling process.

[0033] In this embodiment, a step 136 is provided on the outer side of the assembly conduit 13 and between the first segment 131 and the second segment 132. The step 136 is circumferentially connected along the assembly conduit 13. A plurality of first mounting holes 136a are provided on the step 136. Any one of the first mounting holes 136a passes through the step 136 along the axial direction of the assembly conduit 13. The first base plate 11 is provided with a plurality of second assembly holes, the position and number of the second assembly holes corresponding one-to-one with the position and number of the first mounting holes 136a; The muffler filling mold also includes a plurality of first mounting bolts, each of which passes through a first mounting hole 136a and is threadedly connected to a second assembly hole. Figure 4 As shown, the step 136 facilitates the quick insertion of the upper end of the assembly conduit 13 into the first assembly hole 11a of the first base plate 11, thereby improving the assembly efficiency of the assembly conduit 13.

[0034] During installation, the upper end of the assembly guide tube 13 is inserted into the first assembly hole 11a, the first mounting bolt is passed through the first mounting hole 136a on the step 136 and threadedly connected to the second assembly hole on the first base plate 11, thereby fixing the assembly guide tube 13 onto the first base plate 11, and then the upper end of the gun barrel 12 is inserted into the lower end of the assembly guide tube 13.

[0035] Furthermore, the upper mold 1 also includes: The contoured base plate 14 is disposed on the side of the first base plate 11 near the second base plate 21 and spaced apart from the first base plate 11. The contoured base plate 14 is provided with a plurality of contoured through holes and clearance holes 14a. The position and number of the contoured through holes correspond one-to-one with the position and number of the gun barrels 12. Any gun barrel 12 passes through a contoured through hole, and the clearance hole 14a is used to avoid the silencer tube in the silencer. Sleeve 15, one end of which is fixedly connected to the first base plate 11 and the other end of which is fixedly connected to the contour base plate 14.

[0036] like Figure 3 As shown, the contour base plate 14 is located on the lower side of the first base plate 11. The upper end of the gun barrel 12 is fixedly connected to the first base plate 11, and the lower end extends downward after passing through the contour through hole. The contour base plate 14 can ensure that the interval between the gun barrels 12 remains unchanged, and ensure that the gun barrels 12 remain stable.

[0037] The upper end of the sleeve 15 is fixedly connected to the first base plate 11, and the lower end is fixedly connected to the contour base plate 14. Thus, the sleeve 15 can prevent relative displacement between the contour base plate 14 and the first base plate 11, thereby ensuring that the gun barrel 12 on the contour base plate 14 can remain vertical and ensure the filling effect.

[0038] The structure of the contouring base plate 14 is not limited, and the structure of the contouring base plate 14 and the number and position of the clearance holes 14a can be adjusted according to different muffler structures. During filling, the upper mold 1 gradually approaches the lower mold 2, and the contouring base plate 14 enters the muffler. The clearance holes 14a on the contouring base plate 14 can avoid the muffler pipe, thus preventing interference between the upper mold 1 and the components in the muffler.

[0039] Furthermore, the upper mold 1 also includes: An intermediate base plate 16 is disposed between the first base plate 11 and the contour base plate 14. The intermediate base plate 16 is provided with a plurality of intermediate through holes. The number and position of the intermediate through holes correspond one-to-one with the number and position of the gun barrels 12. Any gun barrel 12 passes through one of the intermediate through holes. The sleeve 15 includes: The first sleeve 151 has one end fixedly connected to the first base plate 11 and the other end fixedly connected to the intermediate base plate 16. The second sleeve 152 is fixedly connected at one end to the intermediate base plate 16 and at the other end to the contour base plate 14.

[0040] In a specific embodiment, such as Figure 3 As shown, the upper end of the first sleeve 151 is fixedly connected to the first base plate 11 and the lower end is fixedly connected to the intermediate base plate 16, and the upper end of the second sleeve 152 is fixedly connected to the intermediate base plate 16 and the lower end is fixedly connected to the contour base plate 14.

[0041] The spacing between the first base plate 11 and the intermediate base plate 16, and between the intermediate base plate 16 and the contour base plate 14, is not limited and can be adjusted according to actual needs. When the barrel 12 is long, or when the silencer filling mold has barrels 12 of different lengths, the intermediate base plate 16 can further ensure that the barrel 12 remains vertical, thereby ensuring the stability of the barrel 12.

[0042] The method of fixing is not limited. In a specific embodiment, the first sleeve 151 and the first base plate 11, the first sleeve 151 and the intermediate base plate 16, the second sleeve 152 and the intermediate base plate 16, and the second sleeve 152 and the contour base plate 14 can all be connected by welding.

[0043] In another specific embodiment, the end of the first sleeve 151 and / or the end of the second sleeve 152 is provided with a connecting block 153, and the connecting block 153 is provided with a plurality of second mounting holes, the second mounting holes penetrating the connecting block 153 along the first direction A; The first base plate 11, the intermediate base plate 16, and the contour base plate 14 are provided with a plurality of third assembly holes, the number and position of the third assembly holes corresponding one-to-one with the number and position of the second mounting holes; The muffler filling mold also includes several second mounting bolts. Any second mounting bolt passes through a second mounting hole and is threadedly connected to a third assembly hole, thereby fixing the first sleeve 151 to the first base plate 11 and the intermediate base plate 16, and fixing the second sleeve 152 to the intermediate sleeve 15 and the contour sleeve 15. The structure is simple, easy to implement, and easy to replace parts, which is beneficial for later maintenance.

[0044] Furthermore, a gasket is provided between the barrel 12 and the contoured through hole, and between the barrel 12 and the intermediate through hole.

[0045] Furthermore, the intermediate base plate 16 is also provided with a guide block 161 on the side near the second base plate 21; And / or, the end of the barrel 12 near the second base plate 21 is inclined, with an inclination angle of 30 to 60°; And / or, the end of the barrel 12 near the second base plate 21 is bent toward the side at an angle of 10 to 30°.

[0046] It should be noted that, according to NVH requirements, the sound-absorbing cotton, after filling, needs to cover the silencing chamber, be evenly filled, and try to block the silencing holes on the silencing tube. Furthermore, while filling the barrel with sound-absorbing cotton, it is necessary to avoid barrel blockage, which could cause the cotton filling equipment to stop due to blockage. On one hand, the lower end of the barrel is designed with a bend to ensure that the sound-absorbing cotton does not clog during filling and to ensure that the sound-absorbing cotton covers the silencing chamber as much as possible. After the barrel is installed on the base plate, the barrels can form a clockwise circular cotton filling path, completing a closed loop. On the other hand, the lower end of the barrel is designed with an incline to ensure cotton filling stability and efficiency.

[0047] The guide block 161 facilitates the quick positioning of the intermediate base plate 16, making it easier to bring the upper mold 1 close to the silencer and insert the barrel 12 into the silencer. The position and number of the guide blocks 161 are not limited and can be adjusted according to the actual structure of the silencer.

[0048] Furthermore, in the lower mold 2, the second base plate 21 is provided on the side near the first base plate 11 with: Adjustment plate 24 is fixedly connected to the second base plate 21; The second contour base plate 25 is located on the side of the adjusting plate 24 opposite to the second base plate 21; Guide post 26 is located in the middle of the second contour base plate 25. The positioning block 27 is located on the side of the second base plate 21 near the first base plate 11 and on the outside of the adjusting plate 24.

[0049] In a specific embodiment, such as Figure 5 and Figure 6 As shown, the adjustment plate 24 is provided on the upper side of the second base plate 21, and the second contouring base plate 25 is provided on the upper side of the adjustment plate 24. During installation, the muffler is placed on the adjustment plate 24, ensuring that the second contouring base plate 25 is located at the lower end of the muffler, and the guide post 26 is located at the lower end of the muffler. The second contouring base plate 25 and the guide post 26 facilitate the quick determination of the installation position of the muffler, making it easy to place the muffler quickly.

[0050] The positioning block 27 can define the position of the muffler, which is beneficial for quickly locating and installing the muffler. The position and number of the positioning blocks 27 are not limited. In a specific embodiment, such as... Figure 6 As shown, the second base plate 21 is provided with two positioning blocks 27, one of which is located on the right side of the adjustment plate 24, and the other is located on the top side of the adjustment plate 24.

[0051] In another specific embodiment, the second base plate 21 is provided with four positioning blocks 27, which are respectively located on the upper, lower, left and right sides of the adjustment plate 24.

[0052] Furthermore, the lower mold 2 also includes: A backing plate 28 is provided on the side of the second base plate 21 near the first base plate 11 and spaced apart from the second base plate 21. A groove 28a is provided on one side of the backing plate 28, and the fixing component 23 is fixedly connected to the side of the backing plate 28 near the groove 28a. Mounting post 29 extends along the first direction A, with one end of the mounting post 29 fixedly connected to the second base plate 21 and the other end fixedly connected to the backing plate 28.

[0053] like Figure 5 As shown, the mounting posts 29 are located above the second base plate 21. The upper end of the mounting post 29 is fixedly connected to the backing plate 28, and the lower end is fixedly connected to the second base plate 21. The number and position of the mounting posts 29 are not limited. The more mounting posts 29 there are, the more stable the connection between the backing plate 28 and the second base plate 21 will be. In a specific embodiment, four mounting posts 29 are provided on the upper side of the lower mold 2.

[0054] like Figure 5As shown, the backing plate 28 is positioned above the second base plate 21. The shape of the groove 28a is not limited, but it should be the same as the cross-sectional shape of the muffler to facilitate the muffler's fit against the backing plate 28. The fixing component 23 is located on the side of the backing plate 28 near the groove 28a, which helps to fix the muffler. During filling, the muffler is placed on the second base plate 21. The groove 28a of the backing plate 28 can fit tightly against the side wall of the muffler, and the fixing component 23 can ensure that the muffler's position remains fixed, thus preventing the muffler from shifting during the filling process.

[0055] The structure of the fixing component 23 is not limited. In one specific embodiment, the fixing component 23 includes: The bolt cutters 231 include a fixed arm and a movable arm. The fixed arm is fixedly connected to the side of the backing plate 28 near the groove 28a. The fixing rod 232 is fixedly connected to the movable arm of the clamp 231.

[0056] In a specific embodiment, such as Figure 5 As shown, the lower side of the backing plate 28 is provided with the clamp 231. Since the fixed rod 232 is fixedly connected to the movable arm of the clamp 231, adjusting the movable arm of the clamp 231 can drive the fixed rod 232 to rotate. Before filling with cotton, the fixed rod 232 is rotated by the clamp 231 to place the muffler on the second base plate 21. Then, the fixed rod 232 is rotated by the clamp 231 and pressed against the outer wall of the muffler to fix the muffler, ensuring that the position of the muffler remains fixed during the filling process.

[0057] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A muffler filling mold, characterized in that, Including the upper mold (1) and the lower mold (2): The upper mold (1) includes: A first base plate (11) is provided with a plurality of first assembly holes (11a). At least one barrel (12), one end of which is fixedly connected to the first base plate (11) on the side near the lower mold (2), and the barrel (12) extends along a first direction (A); A contouring base plate (14) is provided on the side of the first base plate (11) near the lower mold (2) and spaced apart from the first base plate (11). The contouring base plate (14) is provided with a plurality of contouring through holes and clearance holes (14a). The position and number of the contouring through holes correspond one-to-one with the position and number of the gun barrels (12). Any gun barrel (12) passes through a contouring through hole. The clearance hole (14a) is used to avoid the silencer tube in the silencer. An intermediate base plate (16) is provided between the first base plate (11) and the contour base plate (14). The intermediate base plate (16) is provided with a plurality of intermediate through holes. The number and position of the intermediate through holes correspond one-to-one with the number and position of the gun barrels (12). Any gun barrel (12) passes through one of the intermediate through holes. Sleeve (15), said sleeve (15) comprising: The first sleeve (151) has one end fixedly connected to the first base plate (11) and the other end fixedly connected to the intermediate base plate (16). The second sleeve (152) has one end fixedly connected to the intermediate base plate (16) and the other end fixedly connected to the contour base plate (14). Assembly conduit (13), said assembly conduit (13) comprising: The first segment (131) of the assembly conduit (13) can be inserted into the first assembly hole (11a); The second section (132) is provided with a first through groove (133) and a second through groove (134). The first through groove (133) extends axially along the assembly guide tube (13), and the second through groove (134) extends circumferentially along the assembly guide tube (13). The first through groove (133) and the second through groove (134) are connected. The second section (132) is away from one end of the first section (131), and keyholes (135) are provided on both sides of the first through groove (133). One end of the gun barrel (12) is located in the second section (132). Installation key, which can be inserted into the key hole (135); The lower mold (2) includes: The second base plate (21) is spaced apart from the first base plate (11) along the first direction (A); Support component (22) is fixedly connected to the side of the second base plate (21) near the upper mold (1); The fixing component (23) is fixedly connected to the support component (22), and the fixing component (23) is used to fix the muffler.

2. The muffler filling mold as described in claim 1, characterized in that, A step (136) is provided on the outer side of the assembly conduit (13) and between the first section (131) and the second section (132). The step (136) is connected circumferentially along the assembly conduit (13). A plurality of first mounting holes (136a) are provided on the step (136). Any one of the first mounting holes (136a) passes through the step (136) along the axial direction of the assembly conduit (13). The first base plate (11) is provided with a plurality of second assembly holes, the position and number of the second assembly holes corresponding one-to-one with the position and number of the first mounting holes (136a); The muffler filling mold also includes a plurality of first mounting bolts, each of which passes through a first mounting hole (136a) and is threadedly connected to a second assembly hole.

3. The muffler filling mold as described in claim 1, characterized in that, The end of the first sleeve (151) and / or the end of the second sleeve (152) are provided with a connecting block (153), and the connecting block (153) is provided with a plurality of second mounting holes, the second mounting holes penetrating the connecting block (153) along the first direction (A). The first base plate (11), the intermediate base plate (16), and the contour base plate (14) are provided with a plurality of third assembly holes, the number and position of the third assembly holes corresponding one-to-one with the number and position of the second mounting holes; The muffler filling mold also includes several second mounting bolts, each of which passes through a second mounting hole and is threadedly connected to a third assembly hole.

4. The muffler filling mold as described in claim 1, characterized in that, The intermediate base plate (16) is also provided with a guide block (161) on the side near the second base plate (21). And / or, the barrel (12) is inclined at one end near the second base plate (21) at an angle of 30 to 60°; And / or, the end of the barrel (12) near the second base plate (21) is bent toward the side at an angle of 10 to 30°.

5. The muffler filling mold as described in claim 1, characterized in that, In the lower mold (2), the second base plate (21) is provided on the side near the first base plate (11): Adjustment plate (24) is fixedly connected to the second base plate (21); The second contour base plate (25) is located on the side of the adjustment plate (24) opposite to the second base plate (21); The guide post (26) is located in the middle of the second contour base plate (25); The positioning block (27) is located on the side of the second base plate (21) near the first base plate (11) and on the outside of the adjustment plate (24).

6. The muffler filling mold as described in claim 1, characterized in that, The support component (22) also includes: A backing plate (28) is provided on the side of the second base plate (21) near the first base plate (11) and spaced apart from the second base plate (21). A groove (28a) is provided on one side of the backing plate (28), and the fixing component (23) is fixedly connected to the side of the backing plate (28) near the groove (28a). Mounting post (29) extends along the first direction (A), one end of which is fixedly connected to the second base plate (21) and the other end is fixedly connected to the backing plate (28).

7. The muffler filling mold as described in claim 6, characterized in that, The fixing component (23) includes: A pair of bolt cutters (231), comprising a fixed arm and a movable arm, wherein the fixed arm is fixedly connected to the side of the backing plate (28) near the groove (28a). The fixed rod (232) is fixedly connected to the movable arm of the pliers (231).

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