Engine recoil starter pull cord sheath riveting tool

Abstract

The utility model discloses an engine recoil starter pull rope sheath riveting tool, include: base plate, carousel, support subassembly, feeding assembly and stamping assembly, the base plate is rectangle, is fixed on operating platform or operating frame, the carousel is disc shape, is fixed in the base plate center through the pivot, is provided with carousel drive mechanism between the carousel and the base plate, support subassembly is cover body support subassembly and is three, is evenly distributed on the carousel, include: bottom plate, support column, support ring and top column, the bottom plate is rectangle, feeding assembly is fixed on the base plate, and with support subassembly corresponds, include: support I, feeding groove, cylinder I and feeding column, stamping assembly is fixed on the base plate, and with support subassembly corresponds, include: support II, cylinder II and press column, the utility model discloses beneficial technical effects are that can continuously rivet the cover body pull rope sheath, not only effectively improve the processing efficiency, also effectively eliminate the security risk.

Description

Technical Field

[0001] This utility model relates to the riveting technology of the pull rope sheath of an engine recoil starter, and in particular to a riveting fixture for the pull rope sheath of an engine recoil starter. Background Technology

[0002] The recoil starter is a key component of small gasoline and diesel engines. Its function is to rapidly rotate the engine's flywheel by quickly pulling the starter's cable. This rapid rotation causes the compression ratio in the engine cylinders to reach the diesel fuel's knock-off point, resulting in combustion and enabling the engine to operate normally. Typically, the recoil starter has a housing, with the cable leading out through a cable through-hole on the side of the housing (usually referred to as the housing through-hole). Because the recoil starter contains a coil spring, a pulley, and the cable, pulling the cable requires considerable force, and after the engine starts, the cable quickly winds around the pulley under the action of the coil spring. If the edge of the housing through-hole is thin or sharp, it could damage the cable. Usually, a protective sleeve is riveted to the housing through-hole, making the edge of the through-hole rounded, thus protecting the cable as it enters and exits the through-hole. The sheath is mushroom-shaped, including a head and a stem, and is formed by stamping a thin sheet metal. A through hole is provided in the stem of the sheath. After inserting the sheath stem into the through hole of the cover, the end of the sheath stem is then stamped outwards and flipped to rivet it onto the through hole of the cover (see Appendix). Figure 1 In the diagram, a represents the cover, and b represents the sheath. Current methods for riveting the pull rope sheath of engine recoil starters mostly rely on manual operation. This involves setting a top post on the worktable of a punch press, manually inserting the sheath into the through-hole of the cover, placing the cover with the sheath on top of the top post, and then starting the punch press. The upward and downward movement of the punches rivets the sheath onto the through-hole of the cover. Clearly, this riveting method is not only inefficient but also poses safety hazards. Summary of the Invention

[0003] To address the above problems, this utility model proposes a riveting fixture for the pull rope sheath of an engine recoil starter.

[0004] This utility model relates to a riveting fixture for a pull rope sheath of an engine recoil starter, comprising: a base plate, a turntable, a support assembly, a feeding assembly, and a stamping assembly; the base plate is rectangular and fixed on an operating table or operating frame; the turntable is disc-shaped and fixed to the center of the base plate via a rotating shaft, and a turntable drive mechanism is provided between the turntable and the base plate; the support assembly is a cover support assembly consisting of three parts, evenly distributed around the circumference of the turntable; it includes: a base plate, support columns, support rings, and a top column; the base plate is rectangular; the support columns are four in a rectangular distribution and fixed to the base plate; in each Each of the four support pillars has an inclined surface at its upper end, and the inclined surfaces of the four pillars form an inclined plane for fixing the support ring. The bottom of the support ring has a fastening groove for attaching to the edge of the cover, and symmetrical positioning posts are arranged at the top, with the position and size of the positioning posts matching the mounting holes on the edge of the cover. The top pillar is fixed to the base plate, and its upper end has a step for fitting a protective sleeve. The fixed position and height of the top pillar are such that, after the cover is placed on the support ring, the stepped column of the top pillar is exactly located at the center of the through hole in the cover, and the stepped plane of the top pillar is exactly below the through hole in the cover. The delivery... The material assembly is fixed on the base plate and corresponds to the support assembly; it includes: a support I, a feeding trough, a cylinder I, and a feeding column; the support I is L-shaped and fixed on the base plate, and a through hole for installing the feeding trough is provided on the upper part of the support I; the feeding trough is fixed to the upper part of the support I, and the shape and size of the hollow cross-section of the feeding trough match the head of the radial section of the sheath; the front end of the feeding trough extends directly above the top column of the support assembly, and a feeding through hole coaxial with the top column is provided at the front end; the piston of the cylinder I is fixed downward above the support I, and The piston axis is coaxial with the top column; the feeding column is fixed to the piston end of cylinder I, and a blind hole with a diameter larger than the stepped column of the top column is provided at the end of the feeding column; the stamping assembly is fixed on the base plate and corresponds to the support assembly; it includes: support II, cylinder II and pressure column; the support II is L-shaped and fixed on the base plate; the piston of cylinder II is fixed downward above the support II, and the piston axis is coaxial with the top column of the support assembly; the pressure column is fixed to the piston end of cylinder II, and a blind hole with a diameter larger than the stepped column of the top column is provided at the end of the pressure column.

[0005] Furthermore, a permanent magnet is provided at the end of the feeding column.

[0006] Furthermore, the stepped plane of the top column is provided with an annular arc-shaped groove.

[0007] Furthermore, the lower end face of the pressure column is provided with an annular arc-shaped groove that matches the upper end face of the sheath head.

[0008] The beneficial technical effect of this utility model engine recoil starter pull rope sheath riveting fixture is that it can continuously rivet the cover pull rope sheath, which not only effectively improves processing efficiency, but also effectively eliminates safety hazards. Attached Figure Description

[0009] Appendix Figure 1 A three-dimensional schematic diagram of the sheath riveted to the front and back of the cover;

[0010] Appendix Figure 2 This is a three-dimensional schematic diagram of the riveting fixture for the pull rope sheath of the engine recoil starter of this utility model;

[0011] Appendix Figure 3 This is a three-dimensional schematic diagram of the support component of this utility model;

[0012] Appendix Figure 4 This is a partial three-dimensional schematic diagram of the upper step of the top column of the support component of this utility model;

[0013] Appendix Figure 5 This is a three-dimensional schematic diagram of the feeding component of this utility model;

[0014] Appendix Figure 6 This is a three-dimensional schematic diagram of the stamping component of this utility model;

[0015] Appendix Figure 7 This is a three-dimensional schematic diagram of the riveting fixture in its processing state according to this utility model;

[0016] Appendix Figure 8 This is a partial three-dimensional schematic diagram of the feeding state of this utility model;

[0017] Appendix Figure 9 This is a partial three-dimensional schematic diagram of the present invention in the stamping state;

[0018] Appendix Figure 10 This is a cross-sectional schematic diagram of the upper step of the top column of this utility model;

[0019] Appendix Figure 11 This is a cross-sectional view of the lower end face of the pressure column of this utility model.

[0020] In the figure, 1 is the base plate, 2 is the turntable, 3 is the support assembly, 3-1 is the base plate, 3-2 is the support column, 3-3 is the support ring, 3-4 is the top column, 4 is the feeding assembly, 4-1 is the support I, 4-2 is the feeding trough, 4-3 is the cylinder I, 4-4 is the feeding column, 5 is the stamping assembly, 5-1 is the support II, 5-2 is the cylinder II, 5-3 is the pressure column, a is the cover, and b is the protective sleeve.

[0021] The following description, in conjunction with the accompanying drawings and specific embodiments, further illustrates the riveting fixture for the engine recoil starter pull rope sleeve of this utility model. Detailed Implementation

[0022] See appendix Figure 2-9As shown in the figure, the riveting fixture for the pull rope sheath of the engine recoil starter of this utility model includes: a base plate 1, a turntable 2, a support assembly 3, a feeding assembly 4, and a stamping assembly 5; the base plate is rectangular and fixed on the operating table or operating frame; the turntable is disc-shaped and fixed to the center of the base plate by a rotating shaft, and a turntable drive mechanism is provided between the turntable and the base plate; the support assembly is a cover support assembly consisting of three parts, evenly distributed around the turntable; including: a base plate 3-1, a support column 3-2, a support ring 3-3, and a top column 3-4; the base plate is rectangular; the support columns are four in number, rectangular... The support rings are fixed to the base plate in a shaped distribution. Each support column has an inclined surface at its upper end, and the inclined surfaces of the four support columns form an inclined plane for fixing the support ring. The bottom of the support ring has a fastening groove for attaching to the edge of the cover, and symmetrically arranged positioning posts at the top, with the position and size of the positioning posts matching the mounting holes on the edge of the cover. The top column is fixed to the base plate, and its upper end has a step for fitting a protective sleeve. The fixed position and height of the top column are such that, after the cover is placed on the support ring, the stepped column of the top column is exactly located at the center of the through hole in the cover, and the stepped plane of the top column is exactly below the through hole in the cover. The feeding assembly is fixed on the base plate and corresponds to the support assembly; it includes: a support I 4-1, a feeding trough 4-2, a cylinder I 4-3, and a feeding column 4-4; the support I is L-shaped and fixed on the base plate, and a through hole for installing the feeding trough is provided on the upper part of the support I; the feeding trough is fixed to the upper part of the support I, and the shape and size of the hollow cross-section of the feeding trough matches the head of the radial section of the sheath; the front end of the feeding trough extends directly above the top column of the support assembly, and a feeding through hole coaxial with the top column is provided at the front end; the piston of the cylinder I is fixed downward above the support I. The piston axis is coaxial with the top column; the feeding column is fixed to the piston end of cylinder I, and a blind hole with a diameter larger than the stepped column of the top column is provided at the end of the feeding column; the stamping assembly is fixed on the base plate and corresponds to the support assembly; including: support II 5-1, cylinder II 5-2 and pressure column 5-3; the support II is L-shaped and fixed on the base plate; the piston of cylinder II is fixed downward above the support II, and the piston axis is coaxial with the top column of the support assembly; the pressure column is fixed to the piston end of cylinder II, and a blind hole with a diameter larger than the stepped column of the top column is provided at the end of the pressure column. In specific riveting, the cover is placed on the support ring of the first support assembly, that is, the lower edge of the cover is fastened into the fastening groove at the bottom of the support ring, and the mounting through hole on the upper part of the cover is fitted onto the positioning column on the upper part of the support ring; at the same time, pay attention to fitting the through hole of the cover onto the stepped column of the top column (see Appendix). Figure 7 ); The drive unit is activated, and the turntable rotates 120 degrees; the first support assembly rotates to the corresponding position of the feeding assembly; cylinder I is activated, and the piston of cylinder I pushes the feeding column to push the sheath onto the stepped column of the top column of the first support assembly (see appendix). Figure 8Simultaneously, the cover is placed on the second support assembly; the drive device is activated, and the turntable rotates 120 degrees; the first support assembly rotates to the corresponding position of the stamping assembly, and the second support assembly rotates to the corresponding position of the feeding assembly; cylinders I and II are activated, the piston of cylinder I pushes the feeding column to push the sheath onto the stepped column of the top column of the second support assembly, and the piston of cylinder II pushes the pressure column to stamp the sheath on the first support assembly; simultaneously, the cover is placed on the third support assembly; the drive device is activated, and the turntable rotates 120 degrees; the first support assembly rotates to the operating position, and the second and third support assemblies rotate to the corresponding positions of the feeding assembly and the stamping assembly, respectively; this cycle is repeated to continuously rivet the sheath of the cover pull rope, effectively improving processing efficiency; at the same time, since the feeding and stamping are not in the operating position, safety hazards are effectively eliminated.

[0023] As one of the preferred technical solutions, a permanent magnet is provided at the end of the feeding column. Providing a permanent magnet at the end of the feeding column ensures that the sheath adheres to the end of the feeding column and does not fall off when the feeding column pushes the sheath from the feeding trough onto the stepped column of the support assembly's top column.

[0024] See appendix Figure 10 As shown in the figure, as one of the preferred technical solutions, the step plane of the top column is provided with an annular arc-shaped groove. The purpose of providing an annular arc-shaped groove on the step plane of the top column is to allow the shank end of the sheath to radiate outward under the action of the arc-shaped groove when the sheath is subjected to impact pressure, and to ensure that the folded surface is arc-shaped after the stamping is completed.

[0025] See appendix Figure 11 As shown in the figure, as one of the preferred technical solutions, the lower end face of the pressure column is provided with an annular arc-shaped groove that matches the upper end face of the sheath head. The purpose of providing an annular arc-shaped groove on the lower end face of the pressure column that matches the upper end face of the sheath head is to prevent damage to the annular arc shape of the upper end face of the sheath head during stamping, thus maintaining its rounded surface and shape.

[0026] Obviously, the beneficial technical effect of this utility model of engine recoil starter pull rope sheath riveting fixture is that it can continuously rivet the cover pull rope sheath, which not only effectively improves processing efficiency, but also effectively eliminates safety hazards.

Claims

1. A riveting fixture for an engine recoil starter pull rope sheath, characterized in that, The riveting fixture includes: a base plate, a turntable, a support assembly, a feeding assembly, and a stamping assembly; the base plate is rectangular and fixed on an operating table or frame; the turntable is disc-shaped and fixed to the center of the base plate via a rotating shaft, and a turntable drive mechanism is provided between the turntable and the base plate; the support assembly is a cover support assembly consisting of three parts, evenly distributed around the circumference of the turntable; it includes: a base plate, support columns, a support ring, and a top column; the base plate is rectangular; the four support columns are rectangularly distributed and fixed to the base plate; each support column has an inclined surface at its upper end, and... The inclined surfaces of the four pillars form the inclined plane of the fixed support ring; the bottom of the support ring is provided with a fastening groove for fastening the edge of the cover, and the upper part is symmetrically provided with positioning posts, the position and size of which match the mounting holes on the edge of the cover; the top post is fixed to the base plate, and the upper end is provided with a step for fitting a protective sleeve; the fixed position and height of the top post are such that after the cover is placed on the support ring, the stepped column of the top post is exactly located at the center of the through hole of the cover, and the stepped plane of the top post is exactly below the through hole of the cover; the feeding assembly is fixed to the base plate. The support assembly includes: a support I, a feeding trough, a cylinder I, and a feeding column; the support I is L-shaped and fixed to the base plate, with a through hole for mounting the feeding trough on its upper part; the feeding trough is fixed to the upper part of the support I, and the shape and size of the hollow cross-section of the feeding trough match the head of the radial section of the sheath; the front end of the feeding trough extends directly above the top column of the support assembly, and a feeding through hole coaxial with the top column is provided at the front end; the piston of the cylinder I is fixed downward above the support I, and the piston axis is... The feeding column is coaxial with the top column; the feeding column is fixed to the piston end of cylinder I, and a blind hole with a diameter larger than the stepped column of the top column is provided at the end of the feeding column; the stamping assembly is fixed on the base plate and corresponds to the support assembly; it includes: support II, cylinder II and pressure column; the support II is L-shaped and fixed on the base plate; the piston of cylinder II is fixed downward above the support II, and the piston axis is coaxial with the top column of the support assembly; the pressure column is fixed to the piston end of cylinder II, and a blind hole with a diameter larger than the stepped column of the top column is provided at the end of the pressure column.

2. The riveting fixture for the engine recoil starter pull rope sheath according to claim 1, characterized in that, A permanent magnet is provided at the end of the feeding column.

3. The riveting fixture for the engine recoil starter pull rope sheath according to claim 1 or 2, characterized in that, The step plane of the top column is provided with an annular arc-shaped groove.

4. The riveting fixture for the engine recoil starter pull rope sheath according to claim 3, characterized in that, The lower end face of the pressure column is provided with an annular arc-shaped groove that matches the upper end face of the sheath head.

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