Connecting rod copper bush assembly tool

Abstract

The utility model relates to a connecting rod copper bush assembling tool which comprises a pressing head installed on a press machine, a circular pressing plate fixed to the lower end of the pressing head and a cylindrical supporting seat fixed to the pressing plate and capable of being inserted into a copper bush, two positioning pins capable of being inserted into or moved out of oil holes of the copper bush are arranged on the supporting seat, and the positioning pins are connected with a linkage telescopic mechanism. The upper end of the rotating shaft is rotationally connected with the pressing plate, the driving lever is used for driving the rotating shaft to rotate, the torsional spring is arranged on the rotating shaft in a sleeving mode and used for resetting the driving lever, a connecting plate is fixed to the lower end of the rotating shaft, and the two positioning pins are connected with the connecting plate through connecting arms respectively. A limiting piece used for limiting the shifting rod is installed on the pressing plate. According to the utility model, the problem of unqualified product quality caused by inaccurate oil hole alignment is avoided, and the production quality and the production efficiency of the product are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to connecting rod production technical field especially relates to a connecting rod copper bush assembly tool. BACKGROUND

[0002] Connecting rod needs to install copper bush in piston pin hole in production, copper bush has good wear resistance, heat conductivity and reliability, can effectively reduce the wear and tear and friction of piston pin and pin hole, and plays the role of lubrication and cooling simultaneously. Two oil holes are arranged on copper bush and piston pin hole wall respectively, and the oil holes on copper bush and piston pin hole wall need to be corresponded one by one during copper bush installation.

[0003] At present, copper bush is installed by aligning the oil holes on copper bush and piston pin hole wall through naked eye observation of staff, and then the copper bush is pressed into piston pin hole through pressing machine, because there is error in manual observation, the oil holes are often misaligned after copper bush installation, resulting in unqualified product quality, which seriously affects the production quality and production efficiency of connecting rod. Therefore, it is urgent to provide an assembly tool which can conveniently install copper bush into piston pin hole and accurately align the oil holes. SUMMARY

[0004] The utility model discloses a connecting rod copper bush assembly tool to solve the technical problems of the prior art.

[0005] The utility model provides a connecting rod copper bush assembly tool, including the pressure head of installation on the pressing machine, with the circular pressing plate of fixed lower end of pressure head and with the fixed support seat of cylindrical of inserting copper bush inside, set up two can insert or remove the positioning pin of copper bush oil hole on support seat, positioning pin is connected with the linkage telescopic mechanism, the linkage telescopic mechanism includes the rotation axis of upper end with the rotation connection of pressing plate, is used for the lever of driving rotation axis rotation and is set on the torsional spring of rotation axis and is used for the lever reset, rotation axis lower end fixed connecting plate, two positioning pins are connected with connecting plate through an arm respectively, install the limiting piece for the lever limiting on pressing plate.

[0006] Preferably, two pin holes are arranged on the support seat, one positioning pin is inserted into each pin hole, and the linkage telescopic mechanism can control the end of the positioning pin to extend out of the pin hole to insert into the oil hole of the copper bush, or control the end of the positioning pin to retract into the pin hole to remove the oil hole of the copper bush.

[0007] Preferably, the upper end of the support seat is fixed with the pressing plate, and the lower end is fixed with a cover plate, and the bottom is blocked by the cover plate.

[0008] Preferably, the lower end of the lever is fixed with the rotation axis through a cross bar, an arc through hole is arranged on the pressing plate with the rotation axis as the center, and the upper end of the lever extends above the pressing plate through the arc through hole. The rotation axis is rotated by driving the lever, and the rotation axis drives the positioning pin to extend out of the pin hole through the connecting plate and the connecting arm.

[0009] Preferably, one end of the connecting arm is hinged to the positioning pin, and the other end is hinged to the connecting plate.

[0010] Preferably, the limiting member comprises a fixed block fixed on the pressing plate, a first rotating arm hinged to the fixed block, and a stop block fixed on one end of the first rotating arm for stopping the lever, and in the natural state, one end of the first rotating arm with the stop block is naturally drooping. The two side wings of the torsion spring are blocked on one side of the lever, and when the positioning pin needs to be extended out of the pin hole, the lever is moved to the direction close to the first rotating arm to overcome the elastic force of the torsion spring, and when the lever moves below the first rotating arm, the lever is stopped and limited by the stop block, the positioning pin is extended out of the pin hole and inserted into the oil hole in the copper sleeve to position the copper sleeve. A placing groove for placing the connecting rod is arranged on the workbench below the utility model, and when the utility model is installed, the positioning pin corresponds to the two oil holes on the connecting rod piston pin hole arm placed in the placing groove. Therefore, when the connecting rod is placed in the placing groove, the two oil holes on the connecting rod piston pin hole arm correspond to the two oil holes on the copper sleeve, and the copper sleeve is pressed into the piston pin hole by the control press to complete the assembly of the copper sleeve. When the copper sleeve is installed, the copper sleeve is only needed to be sleeved on the supporting seat, and the lever is moved to position the copper sleeve by the positioning pin, which saves time and effort, greatly improves the working efficiency and accuracy of the copper sleeve assembly, and improves the product quality.

[0011] Preferably, when the copper sleeve is assembled into the piston pin hole, in order to automatically move the positioning pin out of the oil hole in the copper sleeve, a second rotating arm is hinged to the fixed block, the second rotating arm and the first rotating arm are hinged to the fixed block through the same connecting shaft, and the first rotating arm and the second rotating arm are fixed to form a U-shaped support through a supporting rod.

[0012] Preferably, a vertical through hole is arranged on the pressing plate below the second rotating arm, and a jacking shaft is inserted into the vertical through hole.

[0013] Preferably, the diameter of the upper end of the jacking shaft is larger than that of the lower end, so that the lower end of the jacking shaft is located below the pressing plate, and the upper end of the jacking shaft is located above the pressing plate. When the copper sleeve is gradually pressed into the piston pin hole of the connecting rod, the lower end of the jacking shaft contacts the connecting rod, the jacking shaft is pushed upward by the connecting rod, the U-shaped support is pushed upward to rotate and release the limitation of the stop block on the lever, the lever and the rotating shaft are reset under the action of the torsion spring, the positioning pin is retracted into the pin hole, and thus the positioning pin is moved out of the oil hole in the copper sleeve.

[0014] The utility model has the advantages that:

[0015] After the copper sleeve is assembled through the utility model, the oil hole on the copper sleeve can be accurately aligned with the oil hole on the piston pin hole wall, the problem of unqualified products caused by misalignment of the oil hole is avoided, and the production quality and production efficiency of the products are improved. DRAWINGS

[0016] Figure 1 It is a structural schematic view of one perspective of the utility model.

[0017] Figure 2 Structure diagram of another view of the utility model;

[0018] Figure 3 Structure diagram of the utility model linkage telescopic mechanism and pressing plate;

[0019] Figure 4 Structure diagram of the utility model linkage telescopic mechanism;

[0020] Figure 5 Diagram of the utility model when the push rod is limited;

[0021] As shown in the figure:

[0022] 1, pressing head, 2, pressing plate, 3, support seat, 4, positioning pin, 5, rotating shaft, 6, push rod, 7, torsional spring, 8, connecting plate, 9, connecting arm, 10, circular arc through hole, 11, fixed block, 12, first rotating arm, 13, stop block, 14, second rotating arm, 15, top shaft, 16, cover plate. DETAILED DESCRIPTION

[0023] In order to clearly illustrate the technical features of the present scheme, the present scheme will be described below through specific embodiments.

[0024] As shown in the figure, Figures 1-5 The utility model discloses a pressing head 1 installed on the press, a circular pressing plate 2 fixed with the lower end of the pressing head 1 and a cylindrical support seat 3 fixed with the pressing plate 2 and capable of being inserted into the inside of the copper sleeve, two positioning pins 4 capable of being inserted into or removed from the oil hole of the copper sleeve are arranged on the support seat 3, and the positioning pins 4 are connected with a linkage telescopic mechanism.

[0025] The upper end of the support seat 3 is fixed with the pressing plate 2, and the lower end is fixed with a cover plate 16, which blocks the bottom. Two pin holes are arranged on the support seat 3, and one positioning pin 4 is inserted into each pin hole. The linkage telescopic mechanism can control the end of the positioning pin 4 to extend out of the pin hole to be inserted into the oil hole of the copper sleeve, or control the end of the positioning pin 4 to retract into the pin hole to be removed from the oil hole of the copper sleeve.

[0026] The linkage telescopic mechanism comprises a rotating shaft 5 rotatably connected with the pressing plate 2 at the upper end, a push rod 6 for pushing the rotating shaft 5 to rotate, and a torsional spring 7 sleeved on the rotating shaft 5 and used for resetting the push rod 6. The lower end of the rotating shaft 5 is fixedly connected with a connecting plate 8, two positioning pins 4 are connected with the connecting plate 8 through a connecting arm 9 respectively, one end of the connecting arm 9 is hinged with the positioning pin 4, and the other end is hinged with the connecting plate 8.

[0027] The lower end of the poking rod 6 is fixed with the rotating shaft 5 through a cross rod, an arc through hole 10 is arranged on the pressing plate 2 and the rotating shaft 5 is taken as the center, the upper end of the poking rod 6 is inserted into the arc through hole 10 and extends above the pressing plate 2, the rotating shaft 5 is rotated by poking the poking rod 6, the rotating shaft 5 is rotated to drive the positioning pin 4 to extend out of the pin hole through the connecting plate 8 and the connecting arm 9. A limiting piece for limiting the poking rod 6 is arranged on the pressing plate 2, the limiting piece comprises a fixed block 11 fixed on the pressing plate 2, a first rotating arm 12 hinged with the fixed block 11 and a stop block 13 fixed on one end of the first rotating arm 12 and used for stopping the poking rod 6, and one end of the first rotating arm 12 installed with the stop block 13 naturally droops in the natural state.

[0028] The two side wings of the torsion spring 7 are stopped on one side of the poking rod 6, when the positioning pin 4 needs to extend out of the pin hole, the poking rod 6 is poked to move to the direction close to the first rotating arm 12 and overcome the elastic force of the torsion spring 7, when the poking rod 6 moves below the first rotating arm 12, the poking rod 6 is stopped and limited by the stop block 13, the positioning pin 4 extends out of the pin hole and inserts into the oil hole in the copper sleeve to position the copper sleeve. A placing groove for placing the connecting rod is arranged on the workbench below the utility model, when the utility model is installed, the positioning pin 4 corresponds to the two oil holes on the connecting rod piston pin hole arm placed in the placing groove. When the connecting rod copper sleeve is assembled subsequently, the two oil holes on the connecting rod piston pin hole arm correspond to the two oil holes on the copper sleeve after the connecting rod is placed in the placing groove, the copper sleeve is pressed into the piston pin hole by the control press to complete the assembly of the copper sleeve. When the copper sleeve is installed, the copper sleeve is only needed to be sleeved on the supporting seat 3, the poking rod 6 is poked to position the copper sleeve through the positioning pin 4, time and labor are saved, the working efficiency and accuracy of the copper sleeve assembly are greatly improved, and the product quality is improved.

[0029] When the copper sleeve is assembled into the piston pin hole, in order to automatically move the positioning pin 4 out of the copper sleeve oil hole, a second rotating arm 14 is hinged on the fixed block 11, the second rotating arm 14 and the first rotating arm 12 are hinged with the fixed block 11 through the same connecting shaft, and the first rotating arm 12 and the second rotating arm 14 form a U-shaped support through a supporting rod.

[0030] A vertical through hole is arranged on the pressing plate 2 below the second rotating arm 14, and a jacking shaft 15 is inserted into the vertical through hole. The upper end of the jacking shaft 15 has a larger diameter than the lower end, so that the lower end of the jacking shaft 15 is located below the pressing plate 2, and the upper end of the jacking shaft 15 is located above the pressing plate 2. When the copper sleeve is gradually pressed into the piston pin hole of the connecting rod, the lower end of the jacking shaft 15 contacts the connecting rod, the jacking shaft 15 is upwardly jacked by the connecting rod, the jacking shaft 15 moves upwardly to drive the U-shaped support to rotate upwardly to release the limitation of the stop block 13 on the poking rod 6, the poking rod 6 and the rotating shaft 5 are reset under the action of the torsion spring 7, the positioning pin 4 is retracted into the pin hole, so that the positioning pin 4 is moved out of the copper sleeve oil hole.

[0031] The method for assembling the connecting rod copper sleeve by using the above assembly tool comprises the following steps:

[0032] (1)First manually copper sleeve in support seat 3 outside, adjust the copper sleeve so that the oil hole on the copper sleeve and the positioning pin 4 on the support seat 3 position alignment, then dial dial lever 6 dial lever 6 moves to the first rotary arm 12 below and through the stop block 13 dial lever 6 limit, dial lever 6 driven shaft 5 rotation makes the positioning pin 4 inserted into the copper sleeve oil hole will copper sleeve positioning;

[0033] (2) In the workbench placed to be assembled copper sleeve connecting rod, control the press to make the utility model driven copper sleeve down and press the copper sleeve into the piston pin hole of connecting rod, when the top shaft 15 lower end contact to connecting rod, top shaft 15 is connected by the connecting rod up to make the U-shaped support rotate, remove the limit to dial lever 6, dial lever 6 and shaft 5 reset, the positioning pin 4 from the copper sleeve oil hole moves out, control the press to make the utility model up, support seat 3 from the copper sleeve moves out, complete the assembly of copper sleeve.

[0034] Through the utility model assembly copper sleeve, the oil hole on the copper sleeve and the oil hole on the piston pin hole wall can be accurately aligned, avoid the product quality problem caused by oil hole misalignment, improve the production quality and production efficiency of product.

[0035] Of course, the above description is not limited to the above examples, the utility model is not described technical features can be realized by or using prior art, hereinafter will not be repeated; The above embodiment and drawing are used to explain the technical scheme of the utility model and not limited to the utility model, the preferred embodiment is described in detail, the person skilled in the art should understand that the changes, modifications, additions or replacement made by the person skilled in the art within the utility model are not deviated from the purpose of the utility model, and should also belong to the protection scope of the claims of the utility model.

Claims

1. A connecting rod copper bush assembly tool, characterized by: The invention relates to a copper bush inserting device, which comprises a pressing head installed on a press, a circular pressing plate fixed to the lower end of the pressing head, and a cylindrical supporting seat fixed to the pressing plate and capable of being inserted into the copper bush, two positioning pins capable of being inserted into or removed from the oil hole of the copper bush are arranged on the supporting seat, and the positioning pins are connected with a linkage telescopic mechanism; the linkage telescopic mechanism comprises a rotating shaft with the upper end being rotatably connected with the pressing plate, a lever for driving the rotating shaft to rotate, a torsion spring sleeved on the rotating shaft and used for resetting the lever, a connecting plate fixed to the lower end of the rotating shaft, and two positioning pins each connected with the connecting plate through a connecting arm; a limiting member for limiting the lever is installed on the pressing plate.

2. The connecting rod copper bush assembly tool according to claim 1, characterized in that: Two pin holes are arranged on the supporting seat, one positioning pin is inserted into each pin hole, and the end of the positioning pin can be controlled to protrude out of the pin hole to be inserted into the oil hole of the copper bush or to be controlled to retract into the pin hole to be removed from the oil hole of the copper bush through the linkage telescopic mechanism.

3. The connecting rod copper bush assembly tool of claim 1, wherein: The lower end of the lever is fixed with the rotating shaft through a cross bar, an arc-shaped through hole with the rotating shaft as the center is arranged on the pressing plate, and the upper end of the lever passes through the arc-shaped through hole and extends above the pressing plate.

4. The connecting rod copper bush assembly tool of claim 1, wherein: One end of the connecting arm is hinged with the positioning pin, and the other end is hinged with the connecting plate.

5. The connecting rod copper bush assembly tool of claim 1, wherein: The limiting member comprises a fixed block fixed on the pressing plate, a first rotating arm hinged with the fixed block, and a stop block fixed on one end of the first rotating arm and used for stopping the lever, and in the natural state, one end of the first rotating arm with the stop block is naturally lowered.

6. The connecting rod brass bush assembly tool of claim 5, wherein: A second rotating arm is hinged on the fixed block, the second rotating arm and the first rotating arm are hinged with the fixed block through the same connecting shaft, and the first rotating arm and the second rotating arm are fixed to form a U-shaped support through a supporting rod.

7. The connecting rod brass bush assembly tool of claim 6, wherein: A vertical through hole is arranged on the pressing plate below the second rotating arm, and a jacking shaft is inserted into the vertical through hole.

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