Accurate sleeve pressing device for engine connecting rod production

Abstract

The utility model relates to the technical field of engine connecting rod machining, and discloses a precise pressing sleeve device for engine connecting rod production, which comprises a workbench, a base is fixedly mounted at the upper end of the workbench, a large hole positioning column is fixedly mounted on one side of the upper end of the base, and a small hole positioning column is arranged on the other side of the upper end of the base. A small hole positioning column is arranged on the base, a containing mechanism acting on the small hole positioning column is arranged in the base, a lining positioning column is fixedly installed at the upper end of the small hole positioning column, a pressing rod is erected above the lining positioning column in a suspended mode, and the pressing rod moves relative to the workbench through a lifting mechanism. The large hole positioning column, the small hole positioning column and the bushing positioning column are arranged, so that the connecting rod and the bushing can be quickly positioned, the bushing can be accurately inserted into the small hole of the connecting rod, and deviation is avoided; and the positioning rod and the lining positioning column can play a role in supporting the interior of the lining, and the lining is prevented from being extruded by the pressing rod to deform.

Description

TECHNICAL FIELD

[0001] The utility model relates to the engine connecting rod processing technical field, concretely is a kind of accurate sleeve pressing device for engine connecting rod production. BACKGROUND

[0002] Engine connecting rod is the component that connects piston and crankshaft, and transmits the force suffered by piston to crankshaft, and converts the reciprocating motion of piston into the rotary motion of crankshaft. In order to effectively improve the service life of engine connecting rod and each mechanical workpiece under cooperation, the connecting rod generally needs to be used with a bushing, which is installed in the small hole of the connecting rod. In the existing bushing installation process, a stamping device (such as a stamping cylinder, a stamping hydraulic cylinder, etc.) is usually used to press the bushing into the connecting rod.

[0003] The existing sleeve pressing device for engine connecting rod production lacks positioning measures for the bushing, and the bushing can be easily tilted during extrusion into the small hole of the connecting rod. At the same time, since the bushing has a hollow annular structure, it can be slightly deformed under force during extrusion into the small hole of the connecting rod. Therefore, an accurate sleeve pressing device for engine connecting rod production is proposed. SUMMARY

[0004] The utility model aims at providing an accurate sleeve pressing device for engine connecting rod production to solve the problems raised in the above background.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an accurate sleeve pressing device for engine connecting rod production, comprising a workbench, a base is fixedly installed on the upper end of the workbench, a large-hole positioning column is fixedly installed on one side of the upper end of the base, a small-hole positioning column is arranged on the other side of the upper end of the base, a receiving mechanism for the small-hole positioning column is arranged inside the base, a bushing positioning column is fixedly installed on the upper end of the small-hole positioning column, a pressing rod is suspended above the bushing positioning column, and the pressing rod is movably connected to the workbench through a lifting mechanism.

[0006] As a further preferred embodiment of the present technical solution, the diameter of the small-hole positioning column is equal to the hole diameter of the connecting rod small hole, the diameter of the bushing positioning column is equal to the hole diameter of the bushing, and the diameter of the pressing rod is greater than the diameter of the small-hole positioning column.

[0007] As a further preferred embodiment of the present technical solution, the small-hole positioning column, the bushing positioning column, and the pressing rod have the same axis.

[0008] As a further preferred embodiment of the present technical solution, the receiving mechanism comprises a movable plate and a spring, the bottom of the small-hole positioning column is fixedly connected with the movable plate, the movable plate is slidably inserted into the movable slot formed in the inside of the base, and the spring is fixedly connected between the bottom of the movable plate and the inner cavity bottom of the movable slot.

[0009] As a further preferred embodiment of the present application, the lifting mechanism comprises a vertical plate, a horizontal plate, a cylinder, a lifting plate and a connecting rod, the vertical plate is fixedly installed at the upper end of the workbench, the upper end of the vertical plate is fixedly installed with the horizontal plate, the upper end of the horizontal plate is fixedly installed with the cylinder, the telescopic rod of the cylinder is slidably penetrated through the horizontal plate and extends below the horizontal plate, the end of the telescopic rod of the cylinder is fixedly connected with the lifting plate, the bottom of the lifting plate is fixedly connected with the connecting rod, and the pressing rod is fixedly connected at the bottom of the connecting rod.

[0010] As a further preferred embodiment of the present application, the lifting plate is fixedly connected with a guide rod at both sides of the upper end, and the upper ends of the two guide rods are slidably penetrated through the horizontal plate.

[0011] As a further preferred embodiment of the present application, the bottom of the pressing rod is fixedly connected with a positioning rod, the axis of the positioning rod is the same as that of the pressing rod, and the diameter of the positioning rod is equal to that of the bushing positioning column.

[0012] The utility model provides a kind of accurate bushing device for engine connecting rod production, with following beneficial effects:

[0013] The large-hole positioning column, the small-hole positioning column and the bushing positioning column can quickly position the connecting rod and the bushing, ensure that the bushing can be accurately inserted into the small hole of the connecting rod without deviation;The positioning rod and the bushing positioning column can support the inside of the bushing, preventing the bushing from deforming due to the extrusion of the pressing rod;The storage mechanism can store the small-hole positioning column and the bushing positioning column, preventing the small-hole positioning column and the bushing positioning column from affecting the pressing of the pressing rod. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is the schematic diagram of the overall structure of the utility model;

[0016] Figure 3 It is the schematic diagram of the overall structure of the utility model; Figure 2

[0017] Figure 4 It is the schematic diagram of the overall structure of the utility model;

[0018] ​In the figure: 1, workbench; 2, base; 3, vertical plate; 4, cross plate; 5, air cylinder; 6, lifting plate; 7, connecting rod; 8, pressing rod; 9, positioning rod; 10, guide rod; 11, large hole positioning column; 12, small hole positioning column; 13, bushing positioning column; 14, movable plate; 15, spring; 16, movable slot. DETAILED DESCRIPTION

[0019] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model.

[0020] The utility model provides technical scheme: as Figures 1 to 4 As shown in the figure, in the embodiment, a precise sleeve pressing device for engine connecting rod production, including workbench 1, the upper end of workbench 1 is fixedly installed with base 2, the upper end of base 2 is fixedly installed with large hole positioning column 11 on one side, the diameter of large hole positioning column 11 is equal to the hole diameter of connecting rod large hole, the other side of the upper end of base 2 is provided with small hole positioning column 12, the diameter of small hole positioning column 12 is equal to the hole diameter of connecting rod small hole, the inside of base 2 is provided with the receiving mechanism for small hole positioning column 12, the upper end of small hole positioning column 12 is fixedly installed with bushing positioning column 13, the diameter of bushing positioning column 13 is equal to the hole diameter of bushing, the upper side of bushing positioning column 13 is suspended and arranged with pressing rod 8, the diameter of pressing rod 8 is greater than the diameter of small hole positioning column 12, pressing rod 8 is relatively movable with workbench 1 through lifting mechanism, the shaft center of small hole positioning column 12, bushing positioning column 13 and pressing rod 8 is same.

[0021] When using, the large hole of connecting rod is sleeved on large hole positioning column 11, the small hole of connecting rod is sleeved on small hole positioning column 12, then the bushing is sleeved on bushing positioning column 13, since the shaft center of small hole positioning column 12, bushing positioning column 13 and pressing rod 8 is same, the shaft center of connecting rod small hole, bushing and pressing rod 8 is same at this time, by controlling pressing rod 8 to move downward through lifting mechanism, the bushing can be extruded into the small hole of connecting rod, since small hole positioning column 12 and bushing positioning column 13 exist, it can guarantee that the bushing can be inserted into the small hole vertically and will not appear skew, and the receiving mechanism arranged can receive small hole positioning column 12 and bushing positioning column 13 into the inside of base 2, avoid that small hole positioning column 12 and bushing positioning column 13 interfere with the descent of pressing rod 8, the diameter of pressing rod 8 is greater than the diameter of small hole positioning column 12, it can guarantee that pressing rod 8 will not be inserted into the inside of connecting rod small hole.

[0022] Among them, the receiving mechanism includes movable plate 14 and spring 15, the bottom of small hole positioning column 12 is fixedly connected with movable plate 14, movable plate 14 is slidably inserted in movable slot 16 opened in the inside of base 2, spring 15 is fixedly connected between the bottom of movable plate 14 and the bottom of the inner cavity of movable slot 16.

[0023] When the upper end of the bushing positioning column 13 is extruded, the small hole positioning column 12 is retracted into the movable slot 16, and the spring 15 is compressed, and when the extrusion force of the upper end of the bushing positioning column 13 disappears, the small hole positioning column 12 and the bushing positioning column 13 are restored to the initial position under the action of the spring 15 recovering deformation.

[0024] The lifting mechanism comprises a vertical plate 3, a horizontal plate 4, a cylinder 5, a lifting plate 6 and a connecting rod 7, the vertical plate 3 is fixedly installed at the upper end of the workbench 1, the upper end of the vertical plate 3 is fixedly installed with the horizontal plate 4, the upper end of the horizontal plate 4 is fixedly installed with the cylinder 5, the telescopic rod of the cylinder 5 is slidably penetrated through the horizontal plate 4 and extends below the horizontal plate 4, the telescopic rod of the cylinder 5 is fixedly connected with the lifting plate 6, the bottom of the lifting plate 6 is fixedly connected with the connecting rod 7, and the connecting rod 7 is fixedly connected with the pressing rod 8.

[0025] In use, the length of the telescopic rod of the cylinder 5 is controlled to control the height of the lifting plate 6, and then the height of the connecting rod 7 and the pressing rod 8 is controlled.

[0026] The upper ends of the two guide rods 10 are slidably penetrated through the horizontal plate 4.

[0027] The guide rods 10 can make the lifting plate 6 move up and down more stably.

[0028] The bottom of the pressing rod 8 is fixedly connected with a positioning rod 9, the axis of the positioning rod 9 is same as that of the pressing rod 8, and the diameter of the positioning rod 9 is equal to that of the bushing positioning column 13.

[0029] When the pressing rod 8 extrudes the bushing, the positioning rod 9 can be inserted into the hole of the bushing in advance, so that the inside of the upper half of the bushing is further supported, the upper end of the bushing is prevented from being deformed due to the extrusion of the pressing rod 8, and the bushing is further positioned.

[0030] The utility model provides a kind of accurate bushing device for engine connecting rod production, specific working principle as follows:

[0031] In use, the large hole of the connecting rod is sleeved on the large hole positioning column 11, the small hole of the connecting rod is sleeved on the small hole positioning column 12, then the bushing is sleeved on the bushing positioning column 13, since the axis of the small hole positioning column 12, the bushing positioning column 13 and the pressing rod 8 is same, the axis of the small hole of the connecting rod, the bushing and the pressing rod 8 is also same, then the length of the telescopic rod of the cylinder 5 is elongated, the pressing rod 8 and the positioning rod 9 are driven to move downwards.

[0032] The positioning rod 9 can be inserted into the hole of the bushing in a step, thereby further supporting the inside of the upper half of the bushing, avoiding the upper half of the bushing from being deformed due to the extrusion of the pressing rod 8, and further positioning the bushing;

[0033] When the bottom of the pressing rod 8 contacts the upper end of the bushing, the bushing is extruded downward, thereby being extruded into the two small holes;

[0034] Due to the existence of the small hole positioning column 12 and the bushing positioning column 13, the bushing can be accurately inserted into the small hole of the connecting rod, avoiding the bushing from being skewed during the insertion process;

[0035] When the upper end of the bushing positioning column 13 is extruded, the small hole positioning column 12 is retracted into the movable groove 16 and the spring 15 is compressed, thereby avoiding the small hole positioning column 12 and the bushing positioning column 13 from interfering with the descent of the pressing rod 8; when the extrusion force of the upper end of the bushing positioning column 13 disappears, the small hole positioning column 12 and the bushing positioning column 13 return to the initial position under the action of the spring 15 recovering the deformation;

[0036] The diameter of the pressing rod 8 is greater than the diameter of the small hole positioning column 12, thereby ensuring that the pressing rod 8 cannot continue to press the bushing downward when the bushing is completely inserted into the two small holes.

[0037] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A precision sleeve pressing device for engine connecting rod production, comprising a workbench (1), characterized in that: The upper end of the workbench (1) is fixedly installed with a base (2), one side of the upper end of the base (2) is fixedly installed with a large-hole positioning column (11), the other side of the upper end of the base (2) is provided with a small-hole positioning column (12), the inside of the base (2) is provided with a storage mechanism acting on the small-hole positioning column (12), the upper end of the small-hole positioning column (12) is fixedly installed with a bushing positioning column (13), the upper side of the bushing positioning column (13) is suspended with a pressing rod (8), the pressing rod (8) is movably connected with the workbench (1) through a lifting mechanism.

2. The precision sleeve pressing device for engine connecting rod production according to claim 1, characterized in that: The diameter of the small-hole positioning column (12) is equal to the hole diameter of the connecting rod small hole, the diameter of the bushing positioning column (13) is equal to the hole diameter of the bushing, and the diameter of the pressing rod (8) is greater than the diameter of the small-hole positioning column (12).

3. The precision sleeve pressing device for engine connecting rod production according to claim 1, characterized in that: The small-hole positioning column (12), the bushing positioning column (13) and the pressing rod (8) have the same axis.

4. The precision sleeve pressing device for engine connecting rod production according to claim 1, characterized in that: The storage mechanism comprises an activity plate (14) and a spring (15), the bottom of the small-hole positioning column (12) is fixedly connected with the activity plate (14), the activity plate (14) is slidingly inserted into the activity groove (16) formed in the inside of the base (2), and the bottom of the activity plate (14) is fixedly connected with the inner cavity bottom of the activity groove (16).

5. The precision sleeve press device for engine connecting rod production of claim 1, wherein: The lifting mechanism comprises a vertical plate (3), a horizontal plate (4), a cylinder (5), a lifting plate (6) and a connecting rod (7), the vertical plate (3) is fixedly installed at the upper end of the workbench (1), the upper end of the vertical plate (3) is fixedly installed with the horizontal plate (4), the upper end of the horizontal plate (4) is fixedly installed with the cylinder (5), the telescopic rod of the cylinder (5) slidingly penetrates through the horizontal plate (4) and extends to the lower side of the horizontal plate (4), the telescopic rod of the cylinder (5) is fixedly connected with the lifting plate (6), the bottom of the lifting plate (6) is fixedly connected with the connecting rod (7), and the pressing rod (8) is fixedly connected at the bottom of the connecting rod (7).

6. The precision sleeve press device for engine connecting rod production of claim 5, wherein: The upper end of the lifting plate (6) is fixedly connected with a guide rod (10) on both sides, and the upper ends of the two guide rods (10) slidingly penetrate through the horizontal plate (4).

7. The precision sleeve press device for engine connecting rod production of claim 1, wherein: The bottom of the pressing rod (8) is fixedly connected with a positioning rod (9), the axis of the positioning rod (9) is the same as that of the pressing rod (8), and the diameter of the positioning rod (9) is equal to that of the bushing positioning column (13).

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