A hot riveting tool for a flow resistance assembly in a filter

Abstract

The utility model discloses a kind of hot riveting tool of filter resistance flow subassembly, including riveting frame, workbench is provided on riveting frame, workbench upper end is provided with the feeding seat plate and riveting seat plate being vertically constrained, riveting seat plate is located below feeding seat plate, feeding seat plate is provided with the clamping piece that vertically passes through riveting seat plate downwards, clamping piece is used for clamping resistance flow subassembly;Two hot riveting pressure arms being laterally constrained are set in the lower end of riveting seat plate, two hot riveting pressure arms are symmetrically set in the opposite sides of resistance flow subassembly, and the end of two hot riveting pressure arms is set with the side opening of avoiding interference with resistance flow subassembly. The utility model has the following advantages and effects: resistance flow subassembly is clamped in advance by clamping piece, completely avoids its in-built spring elasticity and escapes or flies in the process of pressing down, and riveting failure and part plastic deformation scrapping caused by component loss are prevented.

Description

Technical Field

[0001] This utility model belongs to the technical field of fuel pump assembly, and specifically relates to a hot riveting fixture for a flow-blocking component inside a filter. Background Technology

[0002] In the fuel pump assembly filter, a flow-restricting component is typically installed inside to control fuel flow. During assembly, the flow-restricting component is placed into the mounting hole of the filter housing, and then the outer wall of the mounting hole is riveted to deform it, causing the orifice material to shrink inward and press the flow-restricting component into place. Currently, the industry commonly uses hot riveting or direct press riveting, but these methods have the following prominent problems: Because the flow-restricting component has a built-in spring, during the pressing process into the mounting hole, the spring force can easily cause the support part of the flow-restricting component to instantly fly off. Especially when the operator is negligent, the flying component may not be noticed, resulting in the absence of a critical component in the mounting hole. During subsequent hot riveting, the riveting force acts directly on the cavity or residual part, causing abnormal deformation of the orifice material. This leads to irreversible plastic deformation of the flow-restricting component, rendering the entire flow-restricting component unusable. Utility Model Content

[0003] The purpose of this invention is to provide a hot riveting fixture for the flow-blocking component inside a filter, so as to solve the problems mentioned in the background art.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution: A hot riveting fixture for a flow-blocking component inside a filter includes a riveting frame with a worktable for placing the filter to be assembled. The upper end of the worktable has a vertically constrained feeding plate and a riveting plate, with the riveting plate located below the feeding plate. The feeding plate has a clamp that extends vertically downwards through the riveting plate, used to clamp the flow-blocking component. The lower end of the riveting plate has two horizontally constrained hot riveting arms symmetrically arranged on opposite sides of the flow-blocking component, each with a side opening at its opposite end to avoid interference with the flow-blocking component. The riveting plate can move downwards synchronously with the feeding plate, and after the flow-blocking component is inserted into the assembly hole of the filter to be assembled, the riveting plate can continue to move downwards relative to the feeding plate. Through the pressing action of the two hot riveting arms, the outer wall of the filter assembly hole is riveted and fastened.

[0005] By adopting the above technical solution, the feeding seat plate and riveting seat plate move synchronously and relative to each other, enabling clear step-by-step coordinated operation of the flow-blocking component feeding and riveting actions. At the same time, the clamping parts pre-clamp the flow-blocking component, which can completely prevent it from coming off or flying away due to the internal spring force during the pressing process, eliminating assembly defects. Combined with the efficient action cycle, it significantly improves production efficiency. The side opening on the hot riveting arm naturally avoids the flow-blocking component during the extrusion process, avoiding mechanical interference and hard collisions, thereby effectively ensuring the structural integrity of the flow-blocking component during the assembly process.

[0006] A further feature is that the lower surfaces of the two opposing ends of the hot riveting arms are each provided with a riveting notch, and the two riveting notches can cooperate to form an enclosed mold cavity that is wider at the bottom and narrower at the top after they are fitted together.

[0007] By adopting the above technical solution, the material of the assembly hole opening on the filter is orderly gathered inward and adhered to the surface of the flow-blocking component during extrusion, thereby significantly improving the firmness and consistency of the riveting.

[0008] A further feature is that the horizontal cross-sectional shape of the enclosed mold cavity is circular at any height.

[0009] By adopting the above technical solution, a uniform circumferential extrusion force can be provided to ensure that the material of the assembly hole orifice on the filter undergoes uniform plastic deformation and forms a regular annular locking structure, thereby further enhancing the reliability and anti-loosening ability of the riveting connection.

[0010] A further configuration includes a clamping component comprising a driving block, a first cylinder, a clamping sleeve, and a main rod. The first cylinder is fixed to the lower end of the feeding seat plate, with its piston rod vertically downwards. The driving block is fixed to the lower end of the piston rod of the first cylinder. The main rod is fixed to the feeding seat plate. A driving sleeve is formed on the driving block, and the interior of the driving sleeve is hollow to form a through hole for the main rod to pass through. The clamping sleeve is formed at the lower end of the driving block and corresponds to the position of the through hole. The main rod includes a rod body and multiple elastic clamping petals formed at the lower end of the rod body. The outer surface of each elastic clamping petal is bent to form an oblique deformation surface. As the clamping sleeve moves vertically relative to the deformation surface, the clamping sleeve can squeeze each elastic clamping petal inwards to clamp the flow-blocking component.

[0011] By adopting the above technical solution, the clamping sleeve can uniformly squeeze the deformation surface of each elastic clamping petal and cause it to shrink radially inward when moving relative to each other, thereby achieving stable clamping of the flow blocking component. This ensures that the clamping force is uniform and controllable, and effectively prevents the flow blocking component from coming out or flying away due to the spring force when it is installed into the assembly hole, ensuring assembly reliability and continuity, and further improving production efficiency.

[0012] A further feature is that the drive block is also formed with multiple first sleeves, and the lower end of the feeding seat plate is fixedly provided with multiple first guide rods that can be respectively inserted into the corresponding first sleeves.

[0013] By adopting the above technical solution, the lifting and lowering movement of the drive block can be guided and constrained, effectively preventing the tightening sleeve from deviating or shaking during movement.

[0014] A further feature is that the lower end of the riveting base plate has two linear guide grooves, each of which is fitted with a slide table. The two hot riveting arms are respectively fixedly installed at the lower end of the corresponding slide table, and the two sides of the riveting base plate are respectively fixedly installed with second cylinders connected to the corresponding slide tables.

[0015] By adopting the above technical solution, the lateral movement of the two hot riveting arms is guided and controlled, ensuring that the two hot riveting arms can close smoothly during their opposite movement.

[0016] A further configuration is that a plurality of vertical second guide rods are fixedly installed on the upper end of the workbench, and a plurality of second sleeves respectively fitted onto each of the second guide rods are fixedly installed on the feeding seat plate. A top cover is provided on the top of each of the second guide rods, and a third cylinder connected to the feeding seat plate is fixedly installed on the top cover.

[0017] By adopting the above technical solution, a stable guide and driving force are provided for the overall lifting of the feeding seat plate, realizing the rapid and stable feeding of the flow obstruction component, and connecting it in an orderly manner with the riveting action, significantly shortening the single-piece operation cycle.

[0018] A further configuration includes multiple vertical third guide rods fixedly mounted on the upper end of the riveting base plate, multiple third sleeves respectively fitted onto each of the third guide rods fixedly mounted on the feeding base plate, and a fourth cylinder connected to the riveting base plate fixedly mounted on the feeding base plate. By adopting the above technical solution, the riveting seat plate can move independently vertically relative to the feeding seat plate, so that the riveting seat plate can continue to move downwards independently after the feeding seat plate stops.

[0019] In summary, this utility model has the following beneficial effects: it can realize efficient step-by-step collaborative operation of feeding and riveting of the flow-blocking component, significantly improving production efficiency; by pre-clamping the flow-blocking component with clamps, it completely avoids the component from coming off or flying away due to the built-in spring force during the pressing process, eliminating assembly defects and eliminating the risk of plastic deformation of parts and scrap of the whole part caused by the component flying away during hot riveting; at the same time, the hot riveting arm naturally avoids the flow-blocking component through the side opening during the opposite movement, avoiding mechanical interference and hard collision, thereby ensuring the structural integrity of the flow-blocking component during the assembly process. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the embodiment; Figure 2 This is a schematic diagram of the structure after the riveting frame is hidden in the embodiment; Figure 3 This is a schematic diagram of the riveting base plate and its upper part structure in the embodiment; Figure 4 for Figure 3 Enlarged view of section A in the middle; Figure 5 This is an exploded view of the main rod, clamping sleeve, and drive sleeve in the embodiment; Figure 6 This is a schematic diagram of the feeding seat plate, the riveting seat plate, and the upper part of the structure in the embodiment.

[0021] In the diagram: 11. Riveting frame; 12. Workbench; 21. Feeding seat plate; 22. Riveting seat plate; 31. Hot riveting arm; 311. Side opening; 312. Riveting notch; 41. Drive block; 42. First cylinder; 43. Tensioning sleeve; 44. Drive sleeve; 441. Perforation; 51. Main rod; 511. Rod body; 512. Elastic clamping flap; 5121. Deformation surface; 61. First sleeve; 62. First guide rod; 71. Linear guide groove; 72. Slide table; 73. Second cylinder; 81. Second guide rod; 82. Second sleeve; 83. Top cover; 84. Third cylinder; 91. Third guide rod; 92. Third sleeve; 93. Fourth cylinder. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings.

[0023] like Figures 1-6 As shown; This embodiment discloses a hot riveting fixture for a flow-blocking component inside a filter, aiming to solve the problem in existing hot riveting fixtures where the flow-blocking component is easily dislodged or bounced off by spring force during the pressing process, leading to assembly failure and scrapping of the hot riveting process, while significantly improving production efficiency. Specifically, it includes a riveting frame 11, on which a worktable 12 for placing the filter to be assembled is provided. The worktable is generally provided with a cylindrical base with an installation groove for placing the filter inside the base, which is prior art and therefore not described in detail. The upper end of the worktable 12 is provided with a vertically constrained feeding seat plate 21 and a riveting seat plate 22, with the riveting seat plate 22 located below the feeding seat plate 21. The feeding seat plate 21 is provided with a clamp that passes vertically downward through the riveting seat plate 22, and the clamp is used to clamp the flow-blocking component. The lower end of the riveting base plate 22 is provided with two horizontally constrained hot riveting arms 31. The two hot riveting arms 31 are symmetrically arranged on opposite sides of the flow-blocking component, and each of the two hot riveting arms 31 has a side opening 311 at the opposite end to avoid interference with the flow-blocking component. The riveting base plate 22 can move down synchronously with the feeding base plate 21. After the flow-blocking component is inserted into the assembly hole of the filter to be assembled, the riveting base plate 22 can continue to move down relative to the feeding base plate 21. Through the squeezing action of the two hot riveting arms 31, the outer wall of the filter assembly hole is riveted and fastened.

[0024] Specifically, four vertically extending second guide rods 81 are fixedly installed on the upper end of the workbench 12, and four second sleeves 82 respectively fitted onto each of the second guide rods 81 are fixedly installed on the feeding seat plate 21. A top cover 83 is provided on the top of each second guide rod 81, and a third cylinder 84 connected to the feeding seat plate 21 is fixedly installed on the top cover 83. Driven by the third cylinder 84, the feeding seat plate 21 can move vertically up and down relative to the workbench 12 along the guiding direction of the second guide rods 81, thereby realizing the synchronous up and down displacement of the feeding seat plate 21 and all its connected components. Four vertical third guide rods 91 are fixedly installed on the upper end of the riveting seat plate 22, and four third sleeves 92 respectively fitted onto each of the third guide rods 91 are fixedly installed on the feeding seat plate 21. A fourth cylinder 93 connected to the riveting seat plate 22 is also fixedly installed on the feeding seat plate 21. Driven by the fourth cylinder 93, the riveting seat plate 22 can move vertically up and down relative to the feeding seat plate 21 along the guiding direction of the third guide rod 91. This double-layer vertical drive structure allows the feeding seat plate 21 and the riveting seat plate 22 to move down synchronously as a whole, or the riveting seat plate 22 to continue moving down independently after the feeding seat plate 21 stops, thus realizing a clear step-by-step separation of the flow obstruction component placement and the riveting action.

[0025] Specifically, the clamping component includes a drive block 41, a first cylinder 42, a clamping sleeve 43, and a main rod 51. The first cylinder 42 is fixed to the lower end face of the feeding seat plate 21, with its piston rod vertically downward. The drive block 41 is fixed to the lower end of the piston rod of the first cylinder 42, and the main rod 51 is fixed to the feeding seat plate 21 and passes downward through the drive block 41. A drive sleeve 44 is formed on the drive block 41, and the drive sleeve 44 is hollow inside to form a through hole 441 for the main rod 51 to pass through. The clamping sleeve 43 is formed at the lower end of the drive block 41 and corresponds to the position of the through hole 441, that is, the axial center line of the clamping sleeve 43 coincides with the axial center line of the through hole 441. The main rod 51 includes a rod body 511 and four elastic clamping segments 512 formed at the lower end of the rod body 511. Each elastic clamping segment 512 is evenly distributed circumferentially, and the outer surface of each elastic clamping segment 512 is formed by bending to form an oblique deformation surface 5121. When the piston rod of the first cylinder 42 extends, the drive block 41, together with the drive sleeve 44 and the clamping sleeve 43, moves downward. The clamping sleeve 43 can squeeze each elastic clamping segment 512 radially inward, thereby clamping the flow-blocking component placed between each elastic clamping segment 512; reliably preventing the flow-blocking component from being ejected due to the internal spring force when it is subsequently inserted into the assembly hole. Conversely, when the piston rod of the first cylinder 42 retracts, the clamping sleeve 43 moves upward, and each elastic clamping segment 512 opens outward under the action of its own elastic restoring force, releasing the flow-blocking component. To ensure the smoothness and linearity of the movement of the drive block 41, two first sleeves 61 are formed on the drive block 41. Two first guide rods 62 are fixedly provided at the lower end of the feeding seat plate 21, which can be inserted into the corresponding first sleeves 61 respectively. The first guide rods 62 slide with the first sleeves 61 to provide guidance and constraint for the lifting and lowering movement of the drive block 41.

[0026] Specifically, the lower end face of the riveting base plate 22 has two linear guide grooves 71, each containing a slide table 72. The slide table 72 slides in slidably with the linear guide groove 71. Two hot riveting arms 31 are fixedly mounted on the lower ends of their respective slide tables 72. Second cylinders 73, connected to their respective slide tables 72, are fixedly mounted on both sides of the riveting base plate 22. Driven by the second cylinders 73, the slide table 72 drives the hot riveting arms 31 to move towards or away from each other along the direction of the linear guide grooves 71. Each of the two hot riveting arms 31 has a side opening 311 at its facing end. The outline of the side opening 311 matches the shape of the flow-blocking component. As the two hot riveting arms 31 gradually approach each other during their movement, the side opening 311 can accommodate a portion of the flow-blocking component's structure, thus preventing the hot riveting arms 31 from directly impacting the body of the flow-blocking component. Furthermore, each of the lower surfaces of the two opposing ends of the hot riveting arms 31 is provided with a riveting notch 312. After the two riveting notches 312 are fitted together, they can form a surrounding cavity that is wider at the bottom and narrower at the top. The horizontal cross-sectional shape of this surrounding cavity is circular at any height. When the two hot riveting arms 31 are fully closed, the surrounding cavity encloses the outer wall of the filter assembly hole. As the riveting base plate 22 continues to move downward, the narrow part of the surrounding cavity applies a radially inward compressive force to the outer wall of the assembly hole, causing the orifice material to undergo plastic deformation and retract inward, thereby riveting and fixing the flow-blocking component inside the assembly hole.

[0027] In actual operation, the first cylinder 42 of the clamping component is activated first, pushing the drive block 41 and the clamping sleeve 43 to move downward relative to the main rod 51. The clamping sleeve 43 compresses the deformation surfaces 5121 of each elastic clamping petal 512, causing each elastic clamping petal 512 to contract inward and clamp the flow-blocking component to the lower end of the main rod 51, thereby completely restraining the flow-blocking component and preventing its built-in spring from causing the bracket to spring away in subsequent actions. Then, the third cylinder 84 is activated, driving the feeding seat plate 21 and the riveting seat plate 22 to move downward as a whole. During this process, the clamping component holds the flow-blocking component and moves downward together until the flow-blocking component passes into the assembly hole of the filter to be assembled. After the flow-blocking component is inserted into place, the second cylinder 73 pushes the two slides 72 to slide towards each other along the linear guide groove 71, causing the two hot riveting arms 31 to move closer together from both sides. Because the hot riveting arms 31 have side openings 311, these openings always avoid the flow-blocking component during lateral movement, ensuring that the hot riveting arms 31 do not come into contact with it. When the two hot riveting arms 31 are fully closed, the riveting notches 312 on their lower surfaces together form a surrounding cavity that is wider at the bottom and narrower at the top. Subsequently, the fourth cylinder 93 continues to drive the riveting seat plate 22 to move further down relative to the feeding seat plate 21, causing the surrounding cavity to compress and deform against the outer wall of the filter assembly hole. The material at the orifice gradually converges inward along the conical surface of the cavity and presses against the surface of the flow-blocking component, thereby achieving the riveting fastening of the outer wall of the filter assembly hole. After riveting is completed, the fourth cylinder 93 drives the riveting seat plate 22 to return to its original position. Then, the second cylinder 73 drives the two hot riveting arms 31 to retract in the opposite direction. Subsequently, the first cylinder 42 moves in the opposite direction to move the clamping sleeve 43 upward. Each elastic clamping petal 512 opens outward under its own elastic restoring force, releasing the riveted flow-blocking component. Finally, the third cylinder 84 drives the feeding seat plate 21 to return to its original position upward as a whole, thus completing a complete riveting cycle.

[0028] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A hot riveting fixture for a flow-blocking component inside a filter, comprising a riveting frame (11), wherein the riveting frame (11) is provided with a worktable (12) for placing the filter to be assembled, characterized in that: The upper end of the workbench (12) is provided with a vertically constrained feeding seat plate (21) and a riveting seat plate (22). The riveting seat plate (22) is located below the feeding seat plate (21). The feeding seat plate (21) is provided with a clamp that passes vertically downward through the riveting seat plate (22). The clamp is used to clamp the flow-blocking assembly. The lower end of the riveting seat plate (22) is provided with two horizontally constrained hot riveting arms (31). The two hot riveting arms (31) are symmetrically arranged on the flow-blocking assembly. On opposite sides, and at the opposite ends of the two hot riveting arms (31), there are side openings (311) to avoid interference with the flow blocking component; the riveting seat plate (22) can move down synchronously with the feeding seat plate (21), and after the flow blocking component is inserted into the assembly hole of the filter to be assembled, the riveting seat plate (22) can continue to move down relative to the feeding seat plate (21), and the outer wall of the filter assembly hole is riveted and fastened by the squeezing action of the two hot riveting arms (31).

2. The hot riveting fixture for a flow-blocking assembly inside a filter according to claim 1, characterized in that: The lower surfaces of the two opposing ends of the two hot riveting arms (31) are provided with riveting notches (312), and the two riveting notches (312) can cooperate to form an enclosed mold cavity that is wider at the bottom and narrower at the top after being fitted together.

3. The hot riveting fixture for a flow-blocking assembly inside a filter according to claim 2, characterized in that: The horizontal cross-sectional shape of the enclosed mold cavity is circular at any height.

4. The hot riveting fixture for a flow-blocking assembly inside a filter according to claim 1, characterized in that: The clamping component includes a drive block (41), a first cylinder (42), a clamping sleeve (43), and a main rod (51). The first cylinder (42) is fixed to the lower end of the feeding seat plate (21), and its piston rod is vertically downward. The drive block (41) is fixed to the lower end of the piston rod of the first cylinder (42). The main rod (51) is fixed to the feeding seat plate (21). A drive sleeve (44) is formed on the drive block (41). The drive sleeve (44) is hollow inside to form a through hole (441) for the main rod (51) to pass through. The clamping sleeve (43) is formed on the lower end of the drive block (41) and corresponds to the position of the perforation (441); the main rod (51) includes a rod body (511) and multiple elastic clips (512) formed on the lower end of the rod body (511). The outer surface of each elastic clip (512) is formed with an oblique deformation surface (5121) by bending. As the clamping sleeve (43) moves vertically relative to the deformation surface (5121), the clamping sleeve (43) can squeeze each elastic clip (512) inward to clamp the flow blocking component.

5. The hot riveting fixture for a flow-blocking assembly inside a filter according to claim 4, characterized in that: The drive block (41) is also formed with a plurality of first sleeves (61), and the lower end of the feeding seat plate (21) is fixedly provided with a plurality of first guide rods (62) that can be inserted into the corresponding first sleeves (61).

6. The hot riveting fixture for a flow-blocking assembly inside a filter according to claim 1, characterized in that: The riveting base plate (22) has two linear guide grooves (71) at its lower end. Each of the two linear guide grooves (71) is fitted with a slide table (72). The two hot riveting arms (31) are respectively fixedly installed at the lower end of the corresponding slide table (72). The riveting base plate (22) is respectively fixedly installed with a second cylinder (73) connected to the corresponding slide table (72) on both sides.

7. The hot riveting fixture for a flow-blocking assembly inside a filter according to claim 1, characterized in that: The upper end of the workbench (12) is fixedly provided with a plurality of vertical second guide rods (81), and the feeding seat plate (21) is fixedly provided with a plurality of second sleeves (82) respectively sleeved on each second guide rod (81). The top of each second guide rod (81) is provided with a top cover (83), and the top cover (83) is fixedly provided with a third cylinder (84) connected to the feeding seat plate (21).

8. The hot riveting fixture for a flow-blocking assembly inside a filter according to claim 1, characterized in that: The upper end of the riveting seat plate (22) is fixedly provided with a plurality of vertical third guide rods (91), the feeding seat plate (21) is fixedly provided with a plurality of third sleeves (92) respectively sleeved on each third guide rod (91), and the feeding seat plate (21) is fixedly provided with a fourth cylinder (93) connected to the riveting seat plate (22).

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