Production mold for spark net of silencer

Abstract

The utility model belongs to production equipment of silencer accessories, and particularly relates to a production mold of a spark mesh of a silencer. A production die for a spark mesh of a silencer comprises an upper die and a lower die, and is characterized in that the upper die is provided with a blanking hole, the lower die is provided with a lower die core matched with the blanking hole, an upper material pushing block is arranged in the blanking hole, the shape of the upper material pushing block is the same as that of the blanking hole, and the lower die core is arranged in the blanking hole. A concave area is machined on the surface of the upper pushing block, and a circle of press trimming edge is formed between the concave area and the edge of the upper pushing block. According to the production mold for the spark net of the silencer, the periphery of the spark net is pressed and shaped through the upper material pushing block in the spark net forming process, the flatness of the peripheral edge of the spark net is improved, and meanwhile the overall rigidity of the spark net is improved through pressing and shaping.

Description

Technical Field

[0001] The utility model belongs to production equipment for muffler accessories, in particular to a production mold for a spark net of a muffler. Background Art

[0002] The spark screen of the silencer is used to prevent sparks from entering the air outside the silencer to prevent fire and other situations.

[0003] The spark net of the muffler is generally directly stamped by a blanking die. There may be burrs on the edges of the stamped spark net, and there are problems of jamming and difficulty in assembly between the spark net and the muffler. There is no reinforced area on the edge of the stamped spark net, and the strength of the net itself is relatively weak. During the assembly process, the presence of burrs will cause the spark net body to deform. Summary of the invention

[0004] In view of the problems existing in the prior art, the utility model designs a production mold for the spark net of a silencer, which presses the four sides of the spark net during the spark net forming process by means of an upward pushing block, thereby improving the flatness of the edges around the spark net and also improving the overall rigidity of the spark net through pressing.

[0005] The technical solution of the utility model is as follows:

[0006] The production mold of the spark net of the silencer includes an upper mold and a lower mold, and is characterized in that: the upper mold is provided with a blanking hole, the lower mold is provided with a lower mold core matching the blanking hole, an upper push block is arranged in the blanking hole, the shape of the upper push block is the same as the shape of the blanking hole, the surface of the upper push block is processed with an inner concave area, and a circle of edge pressing is formed between the inner concave area and the edge of the upper push block.

[0007] Furthermore, the depth of the concave area is 0.3 mm.

[0008] Furthermore, the upper mold includes an upper base plate, an upper pad, an upper clamping plate and an upper mold plate. The upper pad is fixedly connected to the upper base plate. The fastener passes through the upper mold plate and the upper clamping plate and is fixedly connected to the upper pad. The upper mold plate is provided with a mounting hole. The upper mold insert is arranged in the mounting hole and is fixedly connected to the upper clamping plate. The blanking hole is arranged on the upper mold insert. The upper push block is arranged in the blanking hole. The upper clamping plate and the upper pad are provided with spring mounting holes. The spring is arranged in the spring mounting hole and its two ends are respectively against the upper base plate and the upper push block.

[0009] Furthermore, the lower mold includes a lower base plate, a lower pad, a lower clamping plate and a stripping plate, and the fasteners pass through the lower clamping plate and the lower pad and are fixedly connected to the lower base plate. The lower clamping plate and the lower pad are both provided with connecting through holes. The stripping plate is arranged above the lower pad and passes through the connecting through holes through fastening screws and is movably connected to the lower base plate. The stripping plate and the lower clamping plate are both provided with a lower mold core mounting hole. The lower mold core is installed in the lower mold core mounting hole and is fixedly connected to the lower pad through fasteners. The lower clamping plate is respectively provided with a group of spring mounting holes on both sides of the lower mold core mounting hole. The spring is arranged in the spring mounting hole and its two ends are respectively against the lower pad and the stripping plate.

[0010] Furthermore, a group of outer guide pillars are arranged on the upper base plate, and a group of outer guide sleeves are arranged on the lower base plate.

[0011] Furthermore, the cross section of the lower mold core includes a square base, a triangular portion is provided at one end of the square base in the length direction, the tip of the triangular portion is arc-shaped, and the connection between the triangular portion and the square base adopts an arc transition.

[0012] In summary, the utility model has the following beneficial effects:

[0013] The utility model improves the production mold of the spark net of the silencer, and presses the edge of the formed spark net by pushing up the material block while the spark net is being formed, thereby improving the flatness of the edge of the spark net, and improving the flatness eliminates burrs or protruding parts on the edge of the spark net, thereby avoiding the problem of the spark net being stuck with the assembly part of the muffler shell during the assembly process. Furthermore, the structural strength of the spark net can be improved. After the structural strength is improved, the overall rigidity of the spark net is improved, and it is not easy to deform during the mating process of the spark net and the muffler shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view schematic diagram of the utility model;

[0015] Figure 2 It is a structural schematic diagram of the upper mold insert;

[0016] Figure 3 It is a structural schematic diagram of the push-up material block;

[0017] Figure 4 It is a structural schematic diagram of the upper template;

[0018] Figure 5 Schematic diagram of the structure of the upper splint

[0019] Figure 6 is a structural schematic diagram of the upper pad;

[0020] Figure 7is a structural schematic diagram of the upper base plate;

[0021] Figure 8 It is a structural schematic diagram of the stripping plate;

[0022] Fig. 9 It is a structural schematic diagram of the lower mold core;

[0023] Fig.10 is a schematic diagram of the structure of the lower splint;

[0024] Fig.11 is a structural schematic diagram of the bottom pad;

[0025] Fig.12 Schematic diagram of the structure of the lower base plate

[0026] In the figure, 1 is an upper die, 10 is a blanking hole, 11 is an upper push block, 110 is an inner concave area, 100 is a pressing edge, 13 is an upper bottom plate, 14 is an upper pad, 15 is an upper clamping plate, 16 is an upper template, 160 is a mounting hole, 17 is an upper die insert, 18 is a spring mounting hole, 19 is a spring,

[0027] 2 is the lower die, 20 is the lower die core, 21 is the lower bottom plate, 22 is the lower pad, 23 is the lower clamping plate, 230 is the spring mounting hole, 24 is the stripper plate, 25 is the connecting hole, 26 is the lower die core mounting hole, 27 is the spring,

[0028] 201 is a square base, and 202 is a triangular portion. DETAILED DESCRIPTION

[0029] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0030] It should be noted that when an element is referred to as being "disposed on" or "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is referred to as being "fixed on" another element, or "fixedly connected" to another element, they may be fixed in a detachable manner or in a non-detachable manner. When an element is considered to be "connected" or "rotatably connected" to another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right", "upper", "lower" and similar expressions used are for illustrative purposes only and do not represent the only implementation method.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to restrict the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0032] The terms “first”, “second”, “third” and the like in the present invention do not represent specific quantities and orders, but are merely used to distinguish names.

[0033] See also Figure 1 As shown in FIG. , a production mold for a spark screen of a muffler comprises an upper mold 1 and a lower mold 2, wherein the upper mold 1 is provided with a blanking hole 10, and the lower mold 2 is provided with a lower mold core 20 matching the blanking hole, and an upper push block 11 is arranged in the blanking hole 10, and the shape of the upper push block 11 is the same as that of the blanking hole, and an inner concave area 110 is processed on the surface of the upper push block 11, and a circle of pressing edge 100 is formed between the inner concave area and the edge of the upper push block.

[0034] The utility model improves the production mold of the spark net of the silencer, firstly the spark net is blanked through the cooperation of the blanking hole and the lower mold core, and then the blanked spark net is further formed through the cooperation of the lower mold core and the upper push block, during the forming process, the set pressing edge cooperates with the lower mold core to extrude and press the edge of the spark net, while the spark net corresponding to the concave area in the middle part is not subjected to the effect of pressure, and still maintains the structure and shape of the spark net itself, and pressing the edge of the spark net can trim the burrs or deformation of the spark net generated in the blanking process, thereby improving the flatness of the edge of the spark net, and further, pressing the edge of the spark net also improves the strength of the edge of the spark net, and further improves the overall rigidity of the spark net, so that it can be easily installed in the subsequent assembly process of the spark net, and the installation efficiency is improved.

[0035] Furthermore, the depth of the concave area is 0.3 mm, which limits the depth of the concave area and effectively controls the distance between the surface of the concave area and the surface of the lower mold core after mold closing, avoiding the spark net corresponding to the concave area from being pressed, thereby ensuring the original shape and structure of the spark net in the concave area.

[0036] Furthermore, the upper mold 1 includes an upper base plate 13, an upper pad 14, an upper clamping plate 15 and an upper mold plate 16. The upper pad 14 is fixedly connected to the upper base plate 13. The fastener passes through the upper mold plate and the upper clamping plate and is fixedly connected to the upper pad, so that the upper mold plate, the upper clamping plate and the upper pad are connected. The upper mold plate 16 is provided with a mounting hole 160. The upper mold insert 17 is arranged in the mounting hole and is fixedly connected to the upper clamping plate 15. The blanking hole 10 is arranged on the upper mold insert. With the design of the upper mold insert, when the blanking hole is worn, it can be maintained by replacing the upper mold insert, thereby improving the maintenance efficiency of the mold and reducing the maintenance cost. The upper push block 11 is provided In the blanking hole 10, a spring mounting hole 18 is provided on the upper clamping plate 15 and the upper pad 14, and a spring 19 is arranged in the spring mounting hole and the two ends are respectively against the upper base plate and the upper push block. When the upper mold and the lower mold are closed, the blanking hole cooperates with the lower mold core to complete the blanking of the spark net first, and then, the spark net is pressed and adjusted on the edge of the spark net under the action of the upper push block and the lower mold core. At this time, the spring is compressed. When the upper mold and the lower mold are separated, the spring resets and pushes the upper push block to move in the blanking hole, and the spark net after pressing is pushed out of the blanking hole.

[0037] The lower mold 2 includes a lower base plate 21, a lower pad 22, a lower clamping plate 23 and a stripping plate 24. The fastener passes through the lower clamping plate and the lower pad and is fixedly connected to the lower base plate. In this embodiment, the lower pad and the lower clamping plate are both fixedly connected to the lower base plate and cannot be separated. The lower clamping plate 23 and the lower pad 22 are both provided with connecting through holes 25. The stripping plate 24 is arranged above the lower pad and is movably connected to the lower base plate 21 through the connecting through holes through the fastening screws 25, that is, the stripping plate in this embodiment can float up and down. The stripping plate 25 and the lower clamping plate 23 are both provided with a lower mold core mounting hole 26. The lower mold core 20 is installed in the lower mold core mounting hole 26 and fixedly connected to the lower pad through fasteners. The lower clamping plate 23 is provided with a group of spring mounting holes 230 on both sides of the lower mold core mounting hole. The spring 27 is arranged in the spring mounting hole and the two ends are respectively against the lower pad 22 and the stripping plate 24. In this embodiment, the lower mold core is a replaceable component. When the lower mold core is worn, it can be directly maintained by replacing the lower mold core, thereby reducing the maintenance cost of the mold.

[0038] The upper base plate 13 is provided with a group of outer guide pins, and the lower base plate 21 is provided with a group of outer guide sleeves. The outer guide pins cooperate with the outer guide sleeves to guide the upper and lower molds during the mold closing process, thereby ensuring the mold closing accuracy.

[0039] Furthermore, the shape of the lower mold core is described here. The cross-section of the lower mold core 20 includes a square base 201, and a triangular portion 202 is provided at one end in the length direction of the square base 201. The tip of the triangular portion 202 is arc-shaped, and an arc transition is adopted at the connection between the triangular portion and the square base. The triangular portion is provided with a tip area at one end of the spark net, which can quickly and easily fit into the installation area on the muffler housing, overcoming the problem of difficulty in aligning the two ends of the square end with the installation area in the prior art, improving the installation difficulty, and improving the installation efficiency.

[0040] In summary, the utility model has the following beneficial effects:

[0041] The utility model improves the production mold of the spark net of the silencer, and presses the edge of the formed spark net by pushing up the material block while the spark net is being formed, thereby improving the flatness of the edge of the spark net, and improving the flatness eliminates burrs or protruding parts on the edge of the spark net, thereby avoiding the problem of the spark net being stuck with the assembly part of the muffler shell during the assembly process. Furthermore, the structural strength of the spark net can be improved. After the structural strength is improved, the overall rigidity of the spark net is improved, and it is not easy to deform during the mating process of the spark net and the muffler shell.

[0042] Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

Claims

1. A production mold for a spark screen of a muffler, comprising an upper mold and a lower mold, characterized in that: The upper die is provided with a blanking hole, the lower die is provided with a lower die core cooperating with the blanking hole, an upper push block is arranged in the blanking hole, the shape of the upper push block is the same as the shape of the blanking hole, the surface of the upper push block is processed with an inner concave area, and a circle of pressing edge is formed between the inner concave area and the edge of the upper push block.

2. The production mold for the spark screen of the muffler according to claim 1, characterized in that: The depth of the concave area is 0.3 mm.

3. The production mold for the spark screen of the muffler according to claim 1, characterized in that: The upper mold includes an upper base plate, an upper pad, an upper clamping plate and an upper mold plate. The upper pad is fixedly connected to the upper base plate. The fastener passes through the upper mold plate and the upper clamping plate and is fixedly connected to the upper pad. The upper mold plate is provided with a mounting hole. The upper mold insert is arranged in the mounting hole and is fixedly connected to the upper clamping plate. The blanking hole is arranged on the upper mold insert. The upper push block is arranged in the blanking hole. The upper clamping plate and the upper pad are provided with spring mounting holes. The spring is arranged in the spring mounting hole and its two ends are respectively against the upper base plate and the upper push block.

4. The production mold for the spark screen of the muffler according to claim 3, characterized in that: The lower mold includes a lower base plate, a lower pad, a lower clamping plate and a stripping plate. The fasteners pass through the lower clamping plate and the lower pad and are fixedly connected to the lower base plate. The lower clamping plate and the lower pad are both provided with connecting through holes. The stripping plate is arranged above the lower pad and passes through the connecting through holes through fastening screws and is movably connected to the lower base plate. The stripping plate and the lower clamping plate are both provided with a lower mold core mounting hole. The lower mold core is installed in the lower mold core mounting hole and is fixedly connected to the lower pad through fasteners. The lower clamping plate is respectively provided with a group of spring mounting holes on both sides of the lower mold core mounting hole. The spring is arranged in the spring mounting hole and its two ends are respectively against the lower pad and the stripping plate.

5. The production mold for the spark screen of the muffler according to claim 4, characterized in that: A group of outer guide pillars are arranged on the upper bottom plate, and a group of outer guide sleeves are arranged on the lower bottom plate.

6. The production mold for the spark screen of the muffler according to claim 5, characterized in that: The cross section of the lower mold core comprises a square base, a triangular portion is provided at one end of the square base in the length direction, the tip of the triangular portion is in an arc shape, and the connection between the triangular portion and the square base adopts an arc transition.

Images