CN220030085U - Tensioning wheel rapid Assembly frock - Google Patents

Abstract

The utility model discloses a quick assembly tooling for a tensioning wheel, which comprises a base and a press-fit head, wherein the base is rotatably arranged, the press-fit head is arranged above the base in a lifting manner, an annular groove for installing the lower end of a belt pulley, an eccentric shaft for sleeving a shaft core and an annular table for placing a riveting plate are arranged on the upper end surface of the base, the press-fit head is in press fit with the upper end of the shaft core, the lower end of the press-fit head is provided with a cylinder matched with an inner hole of the shaft core in a positioning manner, and the side wall of the press-fit head is provided with a notch matched with an upper flanging limit of a connecting plate, and the quick assembly tooling is characterized in that: the eccentric shaft is provided with a circle of conical surface bulges which are distributed at intervals on the outer circle adjacent to the upper end surface of the base, the conical surface bulges are matched and positioned in the inner holes of the annular platforms, and avoidance circles are arranged on the corresponding annular platforms and the riveting plates. The riveting device has the advantages of labor saving and reliable press fitting, and realizes that the spring and the riveting plate of the tensioning wheel can be installed at one time.

Description

Tensioning wheel rapid Assembly frock

Technical Field

The utility model relates to an improvement in the field of tensioning wheel assembly, in particular to an improvement in a quick tensioning wheel assembly fixture.

Background

In the prior art, when the tensioning wheel is used for assembling the spring, one end of the spring hook needs to be fixed, the other end of the spring can be twisted to generate torque, however, the design of some eccentric aluminum parts is compact, the maximum outer diameter does not exceed the belt pulley, the eccentric aluminum parts are deeper than the end face of the belt pulley and are difficult to fix due to the fact that the eccentric aluminum parts are clamped by files or ejector rods, the eccentric aluminum parts cannot freely rotate, then the connecting plate is manually pulled to enable the spring to twist to the nominal position of the tensioning wheel, namely the position in front of a stop block of the eccentric aluminum parts, then the spring is manually pressed down and kept unreleased, then the spring is placed on a machine, a riveting plate is placed on a product, and after the riveting plate is pressed and riveted by a press, the assembly is completed. Therefore, in the traditional manual assembly, firstly, the eccentric aluminum part is clamped by using a tool, so that the spring arm hung at one end of the eccentric aluminum part is not moved, the spring hook groove hung at the other end of the connecting plate is twisted, and then the spring hook groove is manually pressed after reaching the working position, and after the spring automatically rebounds to the front of the stop block, the spring is still required to be manually pressed, and the hand cannot be loosened. After the riveting plate is placed on a fixture of the equipment, the pressed sub-assembly is placed on the tool, and the riveting plate is pressed down according to a switch of the equipment to finish. During the time from the spring twisting to the stop to the riveting completion, the hand is required to press the sub-assembly all the time, otherwise the spring automatically bounces off to cause slipping to the pre-assembly state.

Disclosure of Invention

The utility model aims to solve the technical problem of overcoming the defects of the prior art and providing a tensioning wheel rapid assembly tool which is labor-saving in riveting and reliable in press fitting.

In order to solve the technical problems, the utility model is realized by adopting the following technical scheme: this kind of take-up pulley rapid Assembly frock, including base and pressure equipment head, the rotatable setting of base, pressure equipment head liftable sets up in the base top, be equipped with the ring channel that supplies belt pulley lower extreme to install on the base up end, supply the eccentric shaft that the axle core cup jointed and supply the annular table that the riveting board was placed, pressure equipment head and axle core upper end press fit, and pressure equipment head lower extreme be equipped with axle core hole location complex cylinder, be equipped with on the pressure equipment head lateral wall with the connecting plate turn-ups spacing complex notch, its characterized in that: the eccentric shaft is provided with a circle of conical surface bulges which are distributed at intervals on the outer circle adjacent to the upper end surface of the base, the conical surface bulges are matched and positioned in the inner holes of the annular platforms, and avoidance circles are arranged on the corresponding annular platforms and the riveting plates.

The notch of the press fitting head is a single-side groove, the single-side groove is provided with a groove bottom and a groove wall, and the groove wall is in limit fit with the upper flanging of the connecting plate.

The upper end face of the annular table is provided with a riveting plate limiting structure, the limiting structure is formed by two convex points and a straight-edge protrusion which are distributed on the edge of the upper end face of the annular table at intervals, and the riveting plate is provided with a notch corresponding to the limiting structure.

Four conical protrusions are arranged.

The improved quick assembly tooling for the tensioning wheel has the advantages that the rotating base and the lifting press-fit head which are matched with each other are arranged, the eccentric aluminum piece is positioned, the torsion and the pre-pressing of the spring are finished, the riveting plate is riveted to the shaft core, the spring and the riveting plate of the tensioning wheel can be installed at one time, the shaft core adopts conical surface protrusions which are distributed at intervals to prop up and rivet the riveting plate, and the point position effect enables the riveting to be more labor-saving; the notch of the press fitting head is a unilateral groove, the matching space with the upper flanging of the connecting plate is enlarged, and assembly errors caused by dislocation due to errors of angles when the press fitting head is pressed downwards to be preassembled with a product are avoided.

Drawings

The following describes the embodiments of the present utility model in further detail with reference to the accompanying drawings.

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a working state diagram of the present utility model.

Fig. 3 is a cross-sectional view of fig. 2 of the present utility model.

Fig. 4 is an enlarged view of the portion a of fig. 1 according to the present utility model.

Detailed Description

The drawings illustrate the structure of the present utility model, and details thereof are further described below with reference to the drawings. In this embodiment, referring to fig. 1-4, this tensioning wheel quick assembly tooling, including base 1 and pressure equipment head 2, base 1 rotatable setting to the configuration has rotatory power supply, pressure equipment head 2 liftable sets up in base 1 top to the configuration has the lift power supply, be equipped with annular groove 11 that supplies belt pulley 33 lower extreme to install on the base 1 up end, the eccentric shaft 12 that supplies core 31 to cup joint and supplies riveting plate 36 to place annular table 13, pressure equipment head 2 and core 31 upper end pressure fit, and pressure equipment head 2 lower extreme be equipped with core 31 hole locate fit's cylinder 21, be equipped with on the pressure equipment head 2 lateral wall with connecting plate 34 upturn 6 limit fit's notch 22, limit connecting plate 34 takes place to rotate, be equipped with one round conical surface interval distribution's conical surface protrusion 14 on the excircle adjacent base 1 up end, preferably be equipped with four, protruding 14 matches and is located annular table 13 hole, is equipped with circle 15 on corresponding annular table 13 and the riveting plate 36.

The tensioning wheel is of an existing structure and comprises a shaft core 31, an eccentric aluminum piece 32, a belt pulley 33, a connecting plate 34, a spring 35 and a riveting plate 36, wherein the eccentric aluminum piece 32 is arranged on the shaft core 31 through a self-lubricating bearing 37, the belt pulley 33 is arranged on the eccentric aluminum piece 32 through a bearing 38, the connecting plate 34 is in interference fit with the upper end of the shaft core 31, the spring 35 is twisted and pre-pressed between the connecting plate 34 and the eccentric aluminum piece 32, and the riveting plate 36 is riveted at the lower end of the shaft core 31.

According to the working principle of the self-lubricating bearing, the eccentric aluminum piece 32, the belt pulley 33, the bearings and the connecting plate 34 and the shaft core 31 are all pre-installed, firstly, the riveting plate 36 is placed on the annular table 13 of the base 1, then the self-lubricating bearing is sleeved on the eccentric shaft 12 of the base 1, the lower end of the corresponding belt pulley 33 is placed in the annular groove 11, the lower end of the eccentric aluminum piece 32 presses the riveting plate 36, then the upper end of the spring 35 is connected to a blocking arm of the connecting plate 34, the lower end of the spring 35 is connected to a hook groove of the spring 35 of the eccentric aluminum piece 32, then the cylinder 21 and the notch 22 of the press-fit head 2 respectively correspond to the inner hole of the shaft core 31 and the upturned edge 6 of the connecting plate 34, then the press-fit head 2 is pressed down for a distance, the shaft core 31 is pressed into one end distance between the eccentric shaft 12 and the self-lubricating bearing, then the base 1 is rotated to drive the eccentric shaft 12 to rotate, the eccentric aluminum piece 32 and the base 1 is limited in rotation through the eccentric of the belt pulley 33, namely, the nominal torsion of the spring 35 is realized, after the upper end of the spring 35 is connected to the blocking arm of the connecting plate 34, the lower end of the spring 35 is connected to the spring 35, the cylinder 21 and the notch 22 are pressed down correspondingly, the shaft core 31 is pressed down, the boss 31 is pressed down, and the boss 36 is not in a loose fit, and the boss is pressed, the boss is turned, and the boss is turned, and is turned, the is turned.

As a further improved specific embodiment, the notch 22 of the press-fit head 2 is a single-side groove, the single-side groove is provided with a groove bottom and a groove wall, the groove wall is in limit fit with the upturn 6 of the connecting plate 34, wherein the single-side groove increases the fit space with the upturn 6 of the connecting plate 34, and assembly errors caused by dislocation due to angle errors when the press-fit head 2 is pressed down to preassemble products are avoided.

As a further improved specific embodiment, the upper end surface of the annular table 13 is provided with a limiting structure of a riveting plate 36, the limiting structure comprises two convex points 4 and a straight-edge protrusion 5 which are distributed at intervals on the edge of the upper end surface of the annular table 13, and the riveting plate 36 is provided with a notch corresponding to the limiting structure. Wherein two bump 4 and a straight flange protruding 5 mutually support and play local spacing effect to riveting board 36, and straight flange protruding 5 can also prevent riveting board 36 rotation, is superior to whole circle spacing, because riveting board 36 takes place slight deformation after the riveting, leads to the clearance between maximum external diameter and the spacing circle to shrink, probably causes the interference, leads to unable normal taking out after the product riveting.

In summary, the above embodiments are only preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (4)

1. The utility model provides a take-up pulley quick assembly frock, including base and pressure equipment head, the rotatable setting of base, pressure equipment head liftable sets up in the base top, be equipped with the ring channel that supplies belt pulley lower extreme installation, the eccentric shaft that supplies the axle core to cup joint and the annular table that supplies the riveting board to place on the base up end, pressure equipment head and axle core upper end press fit, and pressure equipment head lower extreme be equipped with axle core hole location complex cylinder, be equipped with on the pressure equipment head lateral wall with the connecting plate on turn-ups spacing complex notch, its characterized in that: the eccentric shaft is provided with a circle of conical surface bulges which are distributed at intervals on the outer circle adjacent to the upper end surface of the base, the conical surface bulges are matched and positioned in the inner holes of the annular platforms, and avoidance circles are arranged on the corresponding annular platforms and the riveting plates.

2. The tensioner quick assembly tooling of claim 1, wherein: the notch of the press fitting head is a single-side groove, the single-side groove is provided with a groove bottom and a groove wall, and the groove wall is in limit fit with the upper flanging of the connecting plate.

3. The tensioner quick assembly tooling of claim 1, wherein: the upper end face of the annular table is provided with a riveting plate limiting structure, the limiting structure is formed by two convex points and a straight-edge protrusion which are distributed on the edge of the upper end face of the annular table at intervals, and the riveting plate is provided with a notch corresponding to the limiting structure.

4. The tensioner quick assembly tooling of claim 1, wherein: four conical protrusions are arranged.