A fuse cap pressing mechanism

Abstract

A fuse cap pressing mechanism includes a base, a mounting plate, a cap pressing support plate, a movable cap pressing rod, a cap pressing sleeve, a compression spring, and a pressure cylinder. The mounting plate is vertically mounted on the base, and the cap pressing support plate is fixed to the upper end of the mounting plate. The movable cap pressing rod includes a rod body and a lower cap. The upper end of the rod body is fixed to the cap pressing sleeve and then passes vertically downward through the cap pressing support plate. The lower cap stops at the bottom of the cap pressing support plate. The compression spring is sleeved on the rod body of the movable cap pressing rod and holds it between the cap pressing support plate and the cap pressing sleeve. The pressure cylinder is located above the cap pressing sleeve and pushes the cap pressing sleeve downward during pressing. One end of the tube body is fitted with the outer cap and placed in the positioning groove of the base. The other end of the tube body is fitted with the outer cap and located below the movable cap pressing rod. The downward-pushing cap pressing sleeve drives the lower cap to press down towards the tube body to tighten the outer cap. This invention ensures that the outer cap of the fuse is properly pressed into place at both ends of the tube body, guaranteeing product quality.

Description

Technical Field

[0001] This utility model relates to the field of fuse manufacturing technology, and more specifically to a fuse cap pressing mechanism. Background Technology

[0002] Fuses are used to protect various functional components of household appliances. When an abnormal short circuit or overload occurs, they can promptly cut off the circuit, protecting the functional components from damage caused by the large current. A tubular fuse generally consists of a tube containing the fuse, and end caps (commonly copper caps) located at both ends of the tube and connected to the fuse. The end caps are interference-fitted to the tube and mechanically assembled together.

[0003] Currently, some manufacturers of tubular fuses use manual assembly, while others use fully automatic capping machines. However, capping machines have a cumbersome overall structure. After automatic feeding, the capping mechanism drives the pressing component to press the end caps into place. During the capping process, there is significant impact, which can easily lead to indentations, tube damage, and detachment of the end caps. The capping stability is poor, and the machine's cost and maintenance are high. In manual assembly, the end cap is typically placed on one end of the fuse tube first, then on the other. Due to the small size of the product and variations in force applied during manual operation, the two end caps may not be pressed into the tube to the same depth, or one end cap may be pressed tightly while the other is not properly pressed. This results in inconsistent product quality (incomplete pressing) and increases the defect rate. Utility Model Content

[0004] The purpose of this utility model is to provide a fuse cap pressing mechanism, which can ensure that the fuse cap is properly pressed onto both ends of the tube and that the pressing depth is uniform, thus guaranteeing product quality.

[0005] To achieve the above objectives, the solution of this utility model is:

[0006] A fuse cap pressing mechanism is disclosed. The fuse includes outer caps fitted onto both ends of a tube. The mechanism includes a base, a mounting plate, a cap pressing support plate, a movable cap pressing rod, a cap pressing sleeve, a compression spring, and a pressure cylinder. The mounting plate is vertically mounted on the base, and the cap pressing support plate is fixed to the upper end of the mounting plate. The movable cap pressing rod includes a rod body and a lower cap. The rod body is fixed at its upper end to the cap pressing sleeve and then passes vertically downward through the cap pressing support plate. The lower cap is stopped at the bottom of the cap pressing support plate. The compression spring is sleeved on the rod body of the movable cap pressing rod and holds it between the cap pressing support plate and the cap pressing sleeve. The pressure cylinder is located above the cap pressing sleeve and pushes the cap pressing sleeve downward during pressing. One end of the tube is fitted with an outer cap and placed in a positioning groove on the base. The other end of the tube is fitted with an outer cap and located below the movable cap pressing rod. The downward-pushing cap pressing sleeve drives the lower cap of the movable cap pressing rod to press down towards the tube to tighten the outer cap.

[0007] Furthermore, it also includes a lifting guide rod, which is vertically located between the pressure cap support plate and the pressure cap force-bearing sleeve and parallel to the moving pressure cap rod. The upper end of the lifting guide rod is fixed to the pressure cap force-bearing sleeve and then passes downward longitudinally through the pressure cap support plate.

[0008] Furthermore, it also includes a length limiting rod, which extends downward from the bottom surface of the pressure cap bearing sleeve and is parallel to the moving pressure cap rod. After the pressure cap bearing sleeve moves downward, the length limiting rod abuts against the pressure cap support plate to prevent the moving pressure cap rod from moving excessively downward.

[0009] Furthermore, the top surface of the pressure cap bearing sleeve is provided with a boss, and the length limiting rod is a screw. The length limiting rod is positioned after passing through a connecting hole provided on the pressure bearing sleeve. The length limiting rod is adjusted up and down in the connecting hole to change its length protruding on the bottom surface of the pressure cap bearing sleeve, and the height of the upper end of the length limiting rod after moving up is always lower than the height of the boss.

[0010] Furthermore, the mounting plate is equipped with a tube positioning seat, and the front side of the tube positioning seat is recessed with a limiting groove for the fuse tube to be embedded and positioned therein.

[0011] Furthermore, the mounting plate is provided with an outer cap positioning guide rail parallel to the tube body in the direction of tube body placement. A connecting piece is integrally formed on the side of the outer cap, and at least one pin extends downward from the bottom of the connecting piece. The pin is limited on the outer cap positioning guide rail when the outer cap is placed on the tube body.

[0012] Furthermore, the bottom of the connecting piece of the outer cap extends downward to form two pins, and the gap between the two pins forms a notch. The outer cap positioning guide forms a vertical rail that is inserted and limited in the notch. When the outer cap is placed on the tube body, the notch is limited on the outer cap positioning guide and can slide vertically along the outer cap positioning guide.

[0013] Furthermore, the lower pressure cap is integrally formed at the lower end of the pole body, and the pole body passes through the pressure cap force-bearing sleeve and the pressure cap support plate respectively. The upper end of the pole body is fixedly connected to the pressure cap force-bearing sleeve, and the area of ​​the lower pressure cap is larger than the area of ​​the outer cap.

[0014] Furthermore, the pressure cap support plate is provided with a rod body for moving the pressure cap rod and a first and second through hole through which the lifting guide rail passes downward, and the width of the compression spring is greater than the outer diameter of the first through hole.

[0015] Furthermore, the positioning groove on the base has a front opening formed inward on the base, and a guide surface is formed at the opening of the positioning groove.

[0016] With the above structure, the fuse cap pressing mechanism of this utility model has a simple overall structure. When pressing the cap, it can also limit the tube body or the outer cap. The pressing process is stable, and the operator can easily and efficiently press the outer cap. This ensures that the outer cap of the fuse is properly pressed into place at both ends of the tube body and that the pressing depth is uniform, thus guaranteeing product quality. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0018] Figure 2 This is a front view of the present utility model;

[0019] Figure 3 This is a side view of the present invention;

[0020] Figure 4 This is a schematic diagram of the fuse in this utility model. Detailed Implementation

[0021] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0022] Combination Figures 1 to 4As shown, this utility model discloses a fuse cap pressing mechanism. The fuse includes outer caps 12 fitted onto both ends of a tube body 11. The cap pressing mechanism includes a base 2, a mounting vertical plate 3, a cap pressing support plate 4, a movable cap pressing rod 5, a cap pressing sleeve 6, and a compression spring 7, and is equipped with a pressure cylinder (not shown in the figure). The mounting vertical plate 3 is vertically mounted on the base 2. The cap pressing support plate 4 is fixed to the upper end of the mounting vertical plate 3. The movable cap pressing rod 5 includes a lower cap 52 at the lower end of a rod body 51. The rod body 51 is fixed at the upper end to the cap pressing sleeve 6 and then passes vertically downward through the cap pressing support plate 4. The lower cap 52 is stopped at the bottom of the cap pressing support plate 4. The compression spring 7 is fitted onto the rod body 51 of the movable cap pressing rod 5 and is held between the cap pressing support plate 4 and the cap pressing sleeve 6. The pressure cylinder is located above the cap pressing sleeve 6. After receiving the start command, the pressure cylinder descends and retracts to its original position. When pressing down, the pressure cylinder pushes the pressure cap force sleeve 6 downward. During the cap pressing operation, one end (lower end) of the tube body 11 is fitted with the outer cap 2 and placed into the positioning groove 21 on the base 2. The other end (upper end) of the tube body 11 is fitted with the outer cap 12 and is located below the movable cap pressing rod 5. The downward-pushing pressure cap force sleeve 6 drives the lower cap 52 of the movable cap pressing rod 5 to press down towards the tube body 11 to press the outer cap 12, thereby completing one cap pressing action. At this time, after the cap pressing is performed by a uniform downward stroke, the outer caps 12 at both ends can be pressed tightly onto both ends of the tube body 11.

[0023] Specifically, it also includes a lifting guide rod 8, which is vertically located between the pressure cap support plate 4 and the pressure cap force-bearing sleeve 6 and parallel to the movable pressure cap rod 5. The upper end of the lifting guide rod 8 is fixed to the pressure cap force-bearing sleeve 6 and then passes downward longitudinally through the pressure cap support plate 4. The lifting guide rod 8 can further guide the downwardly moving pressure cap rod 5 to prevent deviation.

[0024] Furthermore, to prevent the movable cap-pressing rod 5 from being excessively pressed down during the pressing process, and to control the pressing distance of the movable cap-pressing rod 5, a length limiting rod 9 is also included. The length limiting rod 9 extends downward from the bottom surface of the cap-pressing sleeve 6 and is parallel to the movable cap-pressing rod 5. After the cap-pressing sleeve 6 moves downward, the length limiting rod 5 can abut against the cap-pressing support plate 4 to prevent the movable cap-pressing rod from moving excessively downward. To allow for adjustment of the length control function of the length limiting rod 9, a boss 61 can be provided on the top surface of the pressure cap sleeve 6. When the pressure cylinder presses down, it acts on the boss 61. The length limiting rod 9 can be a screw. After passing through a connecting hole (not shown in the figure) on the pressure cap sleeve 6, the length limiting rod 9 is positioned (in this example, it is positioned by connecting a nut to the length limiting rod 9). The length limiting rod 9 can be adjusted up and down in the connecting hole to change its length protruding from the bottom surface of the pressure cap sleeve 6. After being moved up, the height of the upper end of the length limiting rod 6 is always lower than the height of the boss 61 to avoid the pressure cylinder acting on the length limiting rod 9. At the same time, the upper end of the rod body 51 of the movable pressure cap rod 5 can be inserted into the boss 61 for fixation.

[0025] In this example, the lower pressure cap 52 can be integrally formed on the lower end of the rod body 51. The rod body 51 passes through the pressure cap force-bearing sleeve 6 and the pressure cap support plate 4 respectively. The upper end of the rod body 51 is fixedly connected to the pressure cap force-bearing sleeve 6. The lower pressure cap 52 can position the compression spring 7 after reset. The area of ​​the lower pressure cap 52 is larger than the area of ​​the fuse outer cap 12 to better realize the downward pressing action. The pressure cap support plate 4 is provided with a first through hole and a second through hole (not shown in the figure) for moving the rod body 51 of the pressure cap rod and for the lifting guide rail 8 to pass through downward. The width of the compression spring 7 is larger than the outer diameter of the first through hole.

[0026] Furthermore, a tube positioning seat 31 can be provided on the mounting vertical plate 3. The front side of the tube positioning seat 31 is recessed with a limiting groove 311 for the fuse tube 11 to be embedded and positioned therein, so as to limit the tube 11 when the cap is pressed and avoid displacement.

[0027] The mounting plate 3, facing the tube body 11, may also be provided with an outer cap positioning guide rail 32 parallel to the tube body 11. Corresponding to the outer cap structure of some fuses, a connecting piece 121 is integrally formed on the side of the outer cap 12. The bottom of the connecting piece 121 can extend downward to form at least one pin, which can limit the pin on the outer cap positioning guide rail when the outer cap 12 is placed on the tube body 11, thereby limiting the outer cap 12 and preventing offset or displacement. In this embodiment, the bottom of the connecting piece 121 of the outer cap extends downward to form two pins 122, and the gap between the two pins forms a notch 123. The outer cap positioning guide rail 32 forms a vertical rail that is inserted into and limited in the notch 123. The notch 123 can limit the outer cap 12 on the outer cap positioning guide rail 32 when the outer cap 12 is placed on the tube body 11 and can slide vertically along the outer cap positioning guide rail.

[0028] For the positioning groove 21 on the base 2, a groove with an open front end can be formed inward on the base 2. A guide surface 211 is formed at the opening of the positioning groove 21. The guide surface can be a slope or an arc surface. The guide surfaces 211 on both sides form a trumpet-shaped opening on the front side of the positioning groove 21, which better guides the tube body 11 of the lower end cap after sleeve into the positioning groove 21.

[0029] When using the cap-pressing mechanism of this utility model to press the fuse cap, one end of the tube 11 (single cap product) with the outer cap 12 already attached is placed into the positioning groove 21 of the base 1. The outer wall of the tube 11 can be inserted into the limiting groove 311 of the tank positioning seat 21 for limiting. Then, another outer cap 12 is attached to the other end (upper end) of the tube 11. In this example, the notches 123 of the two outer caps 12 can be inserted into the outer cap positioning guide rail 32 for positioning. Then, the pressure cylinder can be activated by a foot switch (starting the downward pressing action of the pressure cylinder). The pressure cylinder descends and pushes the cap-pressing sleeve 6 downward. The downward-pushed cap-pressing sleeve 6 drives the lower cap 52 of the moving cap-pressing rod 5 to press down towards the tube 11 to press the outer cap 12, thereby completing a cap-pressing action. The length can also be controlled by the length limiting rod 9 (controlling the pressing depth).

[0030] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A fuse cap pressing mechanism, wherein the fuse comprises outer caps respectively fitted onto both ends of a tube, characterized in that: The outer cap pressing mechanism includes a base, a mounting vertical plate, a cap pressing support plate, a movable cap pressing rod, a cap pressing sleeve, a compression spring, and a pressure cylinder. The mounting vertical plate is vertically mounted on the base, and the cap pressing support plate is fixed to the upper end of the mounting vertical plate. The movable cap pressing rod includes a rod body and a lower cap. The rod body is fixed at the upper end to the cap pressing sleeve and then passes vertically downward through the cap pressing support plate. The lower cap is stopped at the bottom of the cap pressing support plate. The compression spring is sleeved on the rod body of the movable cap pressing rod and holds it between the cap pressing support plate and the cap pressing sleeve. The pressure cylinder is located above the cap pressing sleeve and pushes the cap pressing sleeve downward when pressing down. One end of the tube is fitted with the outer cap and placed in the positioning groove provided on the base. The other end of the tube is fitted with the outer cap and located below the movable cap pressing rod. The downward-pushing cap pressing sleeve drives the lower cap of the movable cap pressing rod to press down towards the tube body to tighten the outer cap.

2. The fuse cap pressing mechanism as described in claim 1, characterized in that: It also includes a lifting guide rod, which is vertically located between the pressure cap support plate and the pressure cap force-bearing sleeve and parallel to the moving pressure cap rod. The upper end of the lifting guide rod is fixed to the pressure cap force-bearing sleeve and then passes downward longitudinally through the pressure cap support plate.

3. A fuse pressing cap mechanism as described in claim 1 or 2, characterized in that: It also includes a length limiting rod, which extends downward from the bottom of the pressure cap bearing sleeve and is parallel to the moving pressure cap rod. After the pressure cap bearing sleeve moves downward, the length limiting rod abuts against the pressure cap support plate to prevent the moving pressure cap rod from moving excessively downward.

4. The fuse cap pressing mechanism as described in claim 3, characterized in that: The top surface of the pressure cap bearing sleeve is provided with a boss, and the length limiting rod is a screw. The length limiting rod is positioned after passing through a connecting hole provided on the pressure bearing sleeve. The length limiting rod is adjusted up and down in the connecting hole to change its length protruding on the bottom surface of the pressure cap bearing sleeve, and the height of the upper end of the length limiting rod after moving up is always lower than the height of the boss.

5. The fuse pressing cap mechanism as described in claim 1, characterized in that: The mounting plate is equipped with a tube positioning seat, and the front side of the tube positioning seat is recessed with a limiting groove for the fuse tube to be embedded and positioned.

6. A fuse cap pressing mechanism as described in claim 1 or 5, characterized in that: The mounting plate has an outer cap positioning guide rail parallel to the tube body in the direction of tube body placement. A connecting piece is integrally formed on the side of the outer cap, and the bottom of the connecting piece extends downward to form at least one pin. The pin is limited on the outer cap positioning guide rail when the outer cap is put on the tube body.

7. A fuse cap pressing mechanism as described in claim 6, characterized in that: The bottom of the outer cap's connecting piece extends downward to form two pins, and the gap between the two pins forms a notch. The outer cap's positioning guide rail forms a vertical rail that is inserted into and limited in the notch. When the outer cap is placed on the tube body, the notch is limited on the outer cap's positioning guide rail and can slide vertically along the outer cap's positioning guide rail.

8. The fuse cap pressing mechanism as described in claim 1, characterized in that: The lower pressure cap is integrally formed at the lower end of the shaft. The shaft passes through the pressure cap force-bearing sleeve and the pressure cap support plate respectively. The upper end of the shaft is fixedly connected to the pressure cap force-bearing sleeve. The area of ​​the lower pressure cap is larger than that of the outer cap.

9. A fuse cap pressing mechanism as described in claim 2, characterized in that: The pressure cap support plate is provided with a rod body for moving the pressure cap rod and a first and second through hole through which the lifting guide rail passes downward. The width of the compression spring is greater than the outer diameter of the first through hole.

10. A fuse cap pressing mechanism as described in claim 1, characterized in that: The positioning groove on the base is formed by an inwardly formed groove with a front opening on the base, and a guide surface is formed at the opening of the positioning groove.

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