Feeding device for grinding end face of engine connecting rod

Abstract

In order to solve the problems that in the prior art, an engine connecting rod end face grinding machining method is large in labor intensity, time-consuming, labor-consuming and the like, the utility model provides an engine connecting rod end face grinding machining feeding device which comprises a bottom plate, a feeding mechanism, a pushing mechanism, a feeding mechanism and a feeding guide groove. The bottom plate is a rectangular plate, and more than two storage grooves are formed in the upper surface of the rectangular plate; the feeding mechanism is arranged on a step on the side edge of the storage tank and comprises a rack, a guide rail, a gear, a feeding motor, a guide seat, a rotating arm and a feeding plate; the material pushing mechanism is arranged at the tail end of the bottom plate material storage groove and comprises a material pushing guide groove, a material pushing plate and a material pushing air cylinder. The engine connecting rod end face grinding feeding device has the advantages that engine connecting rod blanks can be placed in the storage tank at a time and then pushed to a grinding inlet through all the mechanisms, labor intensity is relieved, and production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to an engine connecting rod end surface grinding technology, in particular to an engine connecting rod end surface grinding feeding device. Background Art

[0002] The engine connecting rod is the main component of the engine's torque transmission. Its basic shape is a spoon-shaped straight rod with two connecting holes at each end. One hole is rotatably connected to the bottom of the engine piston, and the other hole is rotatably connected to the crankshaft of the engine crankshaft. Thus, the linear motion of the piston is converted into the circular motion of the crankshaft. Usually, the diameter of the hole connecting the crankshaft is larger, which is called the big end hole; the diameter of the hole connecting the piston is smaller, which is called the small end hole; the two are collectively called the engine connecting rod big and small holes (see attached). Figure 1 ). In order to ensure the effective connection between the engine connecting rod and the engine crankshaft and piston, and reduce shaking or noise, there are high requirements for the dimensional accuracy, surface roughness and position accuracy of the large and small holes of the engine connecting rod, especially the consistency of the hole spacing between the large and small holes. At the same time, there are also high requirements for the dimensional accuracy and surface roughness of the end face of the engine connecting rod.

[0003] In order to ensure that the dimensional accuracy and surface roughness of the engine connecting rod end face meet the design requirements, the engine connecting rod processing process must go through an end face mold processing step. Usually, the two end faces of the engine are ground with a grinding wheel or a grinding belt, that is, the two grinding surfaces of the grinding wheel or abrasive belt are set opposite to each other and rotate in different directions. The spacing between the two grinding surfaces of the grinding wheel or abrasive belt is slightly smaller than the thickness of the engine connecting rod and is adjustable. The engine connecting rod is placed horizontally and vertically between the two grinding surfaces, and the engine connecting rod is pushed through the two grinding surfaces by a push plate, so that the two end faces of the engine connecting rod are ground at one time. In order to ensure that the engine connecting rod can enter between the two grinding surfaces and come out from between the two grinding surfaces in a set posture, guide grooves are respectively set in front and behind the two grinding surfaces (see attached Figure 2 , in the figure, a is the sand belts arranged opposite to each other, b is the guide groove, and D is the engine connecting rod). In the prior art engine connecting rod end surface grinding method, the engine connecting rods are manually placed into the guide grooves at the front ends of the two grinding surfaces one by one, and a push plate is used to push the engine connecting rod between the two grinding surfaces. The operator can only stay beside the processing machine and operate it uninterruptedly, which is not only labor-intensive, but also time-consuming and labor-intensive.

[0004] Obviously, the prior art engine connecting rod end grinding method has the problems of not only high labor intensity but also time-consuming and labor-intensive. Summary of the invention

[0005] In order to solve the problems of the prior art engine connecting rod end surface grinding method, such as high labor intensity, time-consuming and labor-intensive, the utility model provides an engine connecting rod end surface grinding feeding device.

[0006] The utility model discloses a feeding device for grinding the end surface of an engine connecting rod, comprising a bottom plate, a feeding mechanism, a pushing mechanism, a feeding mechanism and a feeding guide groove; the bottom plate is a rectangular plate, and two or more storage grooves are arranged on the upper surface of the rectangular plate, and the cross-sectional shape of the storage groove is a rectangle, and its width matches the length of the outer contour of the engine connecting rod, and its height matches the width of the outer contour of the engine connecting rod; a laterally extending support plate is arranged at the end of the bottom plate; the feeding mechanism is arranged on a step on the side of the storage groove, and comprises a rack, a guide rail, a gear, a feeding motor, a guide seat, a rotating arm and a feeding plate; the rack is arranged on the step on the side of the storage groove edge, and the same length as the storage trough; the guide rail is cylindrical and fixedly arranged obliquely above the rack; the gear is meshed with the rack, and the gear is fixedly connected to the output shaft of the feeding motor; the guide seat is a rectangular parallelepiped, and a guide hole is provided in the middle of the rectangular parallelepiped guide seat, and it is sleeved on the guide rail through the guide hole; a feeding motor is fixedly connected to the lower part of the guide seat, and the feeding motor shaft and the guide rail are perpendicular to each other; a rotating shaft is provided above the guide seat; the rotating arm is long and narrow, one end of which is provided with a circular through hole and is sleeved on the guide seat rotating shaft through the through hole, and the other end is provided with a rectangular through hole; the feeding plate is a rectangular cross-section The long strip plate can be slidably inserted into the rectangular through hole of the rotating arm; the pushing mechanism is arranged at the end of the base plate storage trough, including a pushing guide groove, a pushing plate and a pushing cylinder; the cross-sectional shape of the pushing guide groove is a horizontal U-shape, and its U-shaped opening is fixed at the end of the base plate facing the base plate storage trough, forming a rectangular channel with the end surface of the base plate, and the height and width of the rectangular channel respectively match the width and thickness of the outer contour of the engine connecting rod; the cross-sectional shape of the pushing plate matches the rectangular channel and is inserted into the rectangular channel; the pushing cylinder is fixed to the right side of the support plate at the end of the base plate, and the end of the piston is hinged with the end of the pushing plate The feeding mechanism is arranged on the left side of the supporting plate at the end of the bottom plate, close to the outlet of the pushing guide groove, and includes a feeding motor, a pair of rollers, an upper support plate and a lower support plate; the feeding motor is fixedly installed above the upper support plate, and its output shaft passes through the upper support plate and is fixedly connected to the left roller of the pair of rollers; the pair of rollers is installed between the upper support plate and the lower support plate, and the distance between the left roller and the right roller is smaller than the thickness of the engine connecting rod; the lower support plate is fixed on the left side of the supporting plate at the end of the bottom plate; the feeding guide groove is fixedly installed on the left side of the supporting plate at the end of the bottom plate, one end of which is close to the outlet of the pair of rollers of the feeding mechanism, and the other end is close to the entrance of the two grinding surfaces of the grinding machine.

[0007] Furthermore, the feeding device is also provided with a connecting rod storage mechanism, including a fixed handle, a through rod and a movable handle; the fixed handle has a rectangular outline, a lifting ear is provided on the upper part, and a fixed through hole is provided on the lower part; there are two fixed through holes, and their diameters are respectively the same as the large and small holes of the engine connecting rod, and the spacing between the two through holes is the same as the spacing between the large and small holes of the engine connecting rod; the through rod is a hollow round rod and there are two of them, and their diameters are respectively the same as the large and small holes of the engine connecting rod; one end of the through rod is respectively installed and fixed in the two through holes of the fixed handle, and the other end is respectively provided with a vertically upward pin hole, and the axis of the pin hole intersects perpendicularly with the axis of the through rod; the movable handle is detachably installed on the other end of the through rod, and includes a base, a pin shaft seat, a spring and a fixed lifting ear; the base is rectangular, and its lower part is provided with two blind holes with the same diameters as the large and small holes of the engine connecting rod, and the spacing between the two blind holes is the same as the spacing between the large and small holes of the engine connecting rod; on the rectangular base A circular sliding column is respectively extended upwardly on both sides of the surface, and a pin shaft through hole is respectively provided at a position on the upper surface of the rectangular base facing the axis of the two lower blind holes, and the axis of the pin shaft through hole is perpendicular to the axis of the lower blind hole; the pin shaft seat is a long rectangular strip and is overlapped and placed directly above the base; a pin shaft is extended downwardly at a position on the lower end surface of the pin shaft seat facing the pin shaft through hole of the base, and the length of the pin shaft is based on the front end of the pin shaft being able to extend out of the base through hole wall after the pin shaft is inserted into the pin shaft through hole of the base; sliding holes matching the sliding columns of the base are provided on both sides of the pin shaft seat, and a pin shaft lifting ear is provided between the two sliding holes of the pin shaft seat; the two pin shafts of the pin shaft seat are respectively inserted into the pin shaft through holes of the base, and at the same time, the two sliding holes of the pin shaft seat are respectively mounted on the two sliding columns of the base; there are two springs, which are respectively mounted on the two sliding columns of the base and above the pin shaft seat; the fixed lifting ear is U-shaped and invertedly fixed above the two sliding columns of the base.

[0008] The beneficial technical effect of the feeding device for grinding the end surface of the engine connecting rod of the utility model is that the engine connecting rod blank can be placed in the storage tank at one time, and then pushed to the grinding entrance by various mechanisms, thereby reducing labor intensity and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Attached Figure 1 It is a three-dimensional schematic diagram of a common specification engine connecting rod;

[0010] Attached Figure 2 It is a three-dimensional schematic diagram of belt grinding of engine connecting rod;

[0011] Attached Figure 3 It is a three-dimensional schematic diagram of the feeding device for grinding the end surface of the engine connecting rod of the utility model;

[0012] Attached Figure 4 Yes Figure 3 A local enlarged three-dimensional schematic diagram of point A in the middle;

[0013] Attached Figure 5 Yes Figure 3 A partial enlarged three-dimensional schematic diagram of point B in the middle;

[0014] Attached Figure 6 It is a three-dimensional schematic diagram of the feeding device for grinding the end surface of the engine connecting rod of the utility model from another angle;

[0015] Attached Figure 7 Yes Figure 6 A local enlarged three-dimensional schematic diagram of point A in the middle;

[0016] Attached Figure 8 Yes Figure 6 A partial enlarged three-dimensional schematic diagram of point B in the middle;

[0017] Attached Fig. 9 It is a three-dimensional schematic diagram of the connecting rod storage mechanism of the utility model;

[0018] Attached Fig.10 It is an exploded three-dimensional schematic diagram of the connecting rod storage mechanism of the utility model;

[0019] Attached Fig.11 It is a cross-sectional schematic diagram of the connecting rod storage mechanism of the utility model.

[0020] The feeding device for grinding the end surface of an engine connecting rod of the utility model will be further described below in conjunction with the accompanying drawings and specific implementations. DETAILED DESCRIPTION

[0021] Attached Figure 3 This is a three-dimensional schematic diagram of the feeding device for grinding the end surface of the engine connecting rod of the utility model, with Figure 4 Yes Figure 3 A partial enlarged 3D schematic diagram of the A position in the middle, with Figure 5 Yes Figure 3 A partial enlarged 3D schematic diagram of point B in the figure, with Figure 6 This is a three-dimensional schematic diagram of another angle of the feeding device for grinding the end surface of the engine connecting rod of the utility model, with Figure 7 Yes Figure 6 A partial enlarged 3D schematic diagram of the A position in the middle, with Figure 8 Yes Figure 6A partial enlarged three-dimensional schematic diagram of B in the middle. In the figure, 1 is a bottom plate, 2 is a connecting rod storage mechanism, 3 is a feeding mechanism, 3-1 is a rack, 3-2 is a guide rail, 3-3 is a gear, 3-4 is a feeding motor, 3-5 is a guide seat, 3-6 is a rotating arm, 3-7 is a feeding plate, 4 is a pushing mechanism, 4-1 is a pushing guide groove, 4-2 is a pushing plate, 4-3 is a pushing cylinder, 5 is a feeding mechanism, 5-2 is a feeding motor, 5-2 is a pair of rollers, 5-3 is a lower support plate, 5-4 is an upper support plate, 6 is a feeding guide groove, and D is an engine connecting rod.As can be seen from the figure, the feeding device for grinding the end surface of the engine connecting rod of the utility model comprises a bottom plate 1, a feeding mechanism 3, a pushing mechanism 4, a feeding mechanism 5 and a feeding guide groove 6; the bottom plate 1 is a rectangular plate, and two or more storage grooves are arranged on the upper surface of the rectangular plate, and the cross-sectional shape of the storage groove is rectangular, and its width matches the length of the outer contour of the engine connecting rod, and its height matches the width of the outer contour of the engine connecting rod; a laterally extending support plate is arranged at the end of the bottom plate; the feeding mechanism 3 is arranged on the step on the side of the storage groove, and comprises a rack 3-1, a guide rail 3-2, a gear 3-3, a feeding motor 3-4, a guide seat 3-5, a rotating arm 3-6 and a feeding plate 3-7; the rack 3 -1 is arranged on the edge of the step on the side of the storage trough and has the same length as the storage trough; the guide rail 3-2 is cylindrical and fixedly arranged obliquely above the rack; the gear 3-3 is meshed with the rack, and the gear is fixedly connected to the output shaft of the feeding motor 3-4; the guide seat 3-5 is a rectangular parallelepiped, a guide hole is arranged in the middle of the rectangular parallelepiped guide seat, and it is sleeved on the guide rail through the guide hole; a feeding motor is fixedly connected to the lower part of the guide seat, and the feeding motor shaft and the guide rail are perpendicular to each other; a rotating shaft is arranged above the guide seat; the rotating arm 3-6 is long and has a circular through hole at one end and is sleeved on the guide seat rotating shaft through the through hole, and a rectangular through hole is arranged at the other end; the feeding plate 3-7 is a cross-sectional The long strip plate with a rectangular surface can be slidably inserted into the rectangular through hole of the rotating arm; the pushing mechanism 4 is arranged at the end of the base plate storage trough, including a pushing guide groove 4-1, a pushing plate 4-2 and a pushing cylinder 4-3; the cross-sectional shape of the pushing guide groove 4-1 is a horizontal U-shape, and its U-shaped opening is fixed at the end of the base plate facing the base plate storage trough, forming a rectangular channel with the end face of the base plate, and the height and width of the rectangular channel respectively match the width and thickness of the outer contour of the engine connecting rod; the cross-sectional shape of the pushing plate 4-2 matches the rectangular channel and is inserted in the rectangular channel; the pushing cylinder 4-3 is fixed to the right side of the support plate at the end of the base plate, and the end of the piston is hinged to the end of the pushing plate ; The feeding mechanism 5 is arranged on the left side of the support plate at the end of the bottom plate, adjacent to the outlet of the pushing guide groove, and includes a feeding motor 5-1, a pair of rollers 5-2, an upper support plate 5-4 and a lower support plate 5-3; the feeding motor 5-1 is fixedly installed above the upper support plate 5-4, and its output shaft passes through the upper support plate and is fixedly connected to the left roller in the pair of rollers; the pair of rollers 5-2 are installed between the upper support plate and the lower support plate, and the distance between the left roller and the right roller is smaller than the thickness of the engine connecting rod; the lower support plate 5-3 is fixed on the left side of the support plate at the end of the bottom plate; the feeding guide groove 6 is fixedly installed on the left side of the support plate at the end of the bottom plate, one end of which is adjacent to the outlet of the pair of rollers of the feeding mechanism, and the other end is adjacent to the entrance of the two grinding surfaces of the grinding machine.The utility model engine connecting rod end face grinding feeding device adopts a storage trough to place the engine connecting rod to be ground. Since the width of the storage trough matches the length of the outer contour of the engine connecting rod, and the height matches the width of the outer contour of the engine connecting rod, it is relatively easy to place and can be placed neatly; the feeding mechanism is used to transport the engine connecting rod to the push guide groove at the end of the storage trough, the push mechanism is used to transport the engine connecting rod to the end of the push guide groove, and the feeding mechanism is used to transport the engine connecting rod to the entrance of the two grinding surfaces of the grinding machine through the feed guide groove. Since a large number of engine connecting rods can be placed in the storage trough at one time, and the feeding mechanism, the push mechanism and the feeding mechanism can all operate in an orderly manner, and more than two storage troughs can be used to place the engine connecting rods in turn, the operator does not need to stay by the machine, nor does it need to operate uninterruptedly, and can place the engine connecting rod in the storage trough and perform other operations. It effectively reduces labor intensity and improves production efficiency. During the specific operation, the engine connecting rods are neatly arranged in a horizontal and vertical manner in the storage tank, the rotating arm of the feeding mechanism is rotated to the top of the storage tank, and the feeding plate is pushed downward so that the bottom of the feeding plate is against the back of the last engine connecting rod. The feeding motor is turned on, and the gear rotates to drive the guide seat to move forward on the guide rail, thereby driving the feeding plate to move forward, and then pushing the neatly arranged engine connecting rods to move forward, and the engine connecting rod at the end of the storage tank slides into the push guide groove; the push cylinder is started, and the feeding plate sends the engine connecting rod that slides into the push guide groove to the feed structure roller, and the feeding motor is always in operation. When the engine connecting rod is sent to the roller entrance, the roller will push the engine connecting rod to move to one side of the feed guide groove, and at the same time, push the front engine connecting rod into the two grinding surfaces of the machine, thereby completing the grinding process. In fact, the above steps are carried out continuously. After the previous connecting rod is fed into the roller, the next connecting rod slides into the push guide groove again. Similarly, when the current connecting rod is sent out of the rollers, the next connecting rod is sent to the roller entrance. Since there are more than two storage tanks, the operator can place the engine connecting rods in turn, without having to stay by the machine or operate continuously. The operator can place the engine connecting rod in the storage tank and perform other operations, which effectively reduces labor intensity and improves production efficiency.

[0022] Attached Fig. 9 It is a three-dimensional schematic diagram of the connecting rod storage mechanism of the utility model, attached Fig.10 This is an exploded three-dimensional schematic diagram of the connecting rod storage mechanism of the utility model, with Fig.11It is a cross-sectional schematic diagram of the connecting rod storage mechanism of the utility model; in the figure, 2-1 is a fixed handle, 2-2 is a through rod, 2-3 is a movable handle, 2-3-1 is a base, 2-3-2 is a pin seat, 2-3-3 is a spring, 2-3-4 is a fixed lifting ear, and D is an engine connecting rod. It can be seen from the figure that as one of the preferred schemes, the feeding device is also provided with a connecting rod storage mechanism 2, including a fixed handle 2-1, a through rod 2-2 and a movable handle 2-3; the fixed handle 2-1 has a rectangular outline, a lifting ear is provided on the upper part, and a fixed through hole is provided on the lower part; there are two fixed through holes, and their diameters are the same as the large and small holes of the engine connecting rod, and the spacing between the two through holes is the same as the spacing between the large and small holes of the engine connecting rod; the through rod 2-2 is a hollow round rod and there are two of them, and their diameters are the same as the large and small holes of the engine connecting rod, respectively. The holes are the same; one end of the through rod is respectively installed and fixed in the two through holes of the fixed handle, and the other end is respectively provided with a vertically upward pin hole, and the axis of the pin hole is perpendicular to the axis of the through rod; the movable handle 2-3 is detachably installed at the other end of the through rod, including a base 2-3-1, a pin shaft seat 2-3-2, a spring 2-3-3 and a fixed lifting ear 2-3-4; the base 2-3-1 is rectangular, and its lower part is provided with two blind holes with the same diameter as the engine connecting rod hole, and the spacing between the two blind holes is the same as that of the engine connecting rod hole. The spacing between the large and small holes of the engine connecting rod is the same; a circular sliding column is extended upward on both sides of the upper surface of the rectangular base, and a pin through hole is provided at the position of the upper surface of the rectangular base facing the axis of the two lower blind holes, and the axis of the pin through hole is perpendicular to the axis of the lower blind hole; the pin seat 2-3-2 is a long rectangle and is overlapped and placed directly above the base; a pin is extended downward at the position of the lower end surface of the pin seat facing the pin through hole of the base, and the length of the pin is after the pin is inserted into the pin through hole of the base. The front end of the pin shaft can extend out of the through hole wall of the base; sliding holes matching the base sliding column are arranged on both sides of the pin shaft seat, and a pin shaft lifting ear is arranged between the two sliding holes of the pin shaft seat; the two pin shafts of the pin shaft seat are respectively inserted into the pin shaft through hole of the base, and at the same time, the two sliding holes of the pin shaft seat are respectively mounted on the two sliding columns of the base; there are two springs 2-3-3, which are respectively mounted on the two sliding columns of the base and above the pin shaft seat; the fixed lifting ear 2-3-4 is U-shaped and invertedly fixed above the two sliding columns of the base. The connecting rod storage mechanism as a matching device of the engine connecting rod end surface grinding feeding device of the utility model can conveniently store or transport the engine connecting rod. Since the diameter of the rod through the connecting rod storage mechanism is the same as the size hole of the engine connecting rod, the engine connecting rod can be conveniently loaded, unloaded or transported.When it is necessary to store or transport the engine connecting rod, pull the pin lifting ear of the movable handle upward, the pin seat overcomes the spring tension and moves upward, the front end of the pin slips out of the pin hole at the front end of the through rod, and the movable handle is removed from the front end of the through rod; the engine connecting rods are inserted into the large and small through rods one by one, and after reaching the set number, the pin lifting ear of the movable handle is slightly pulled upward, the blind hole of the movable handle base is mounted on the end of the through rod, and the pin is slightly moved to insert the pin into the pin hole at the end of the through rod; at this time, the engine connecting rod is firmly inserted into the through rod, which can be conveniently stored or transported, and is very convenient to count. When it is necessary to place the engine connecting rod in the storage trough of the engine connecting rod end grinding feeding device of the utility model, the whole string of engine connecting rods can be lifted and placed in the storage trough by the handles at both ends of the through rod, the movable handle is removed, and the feeding plate of the feeding mechanism is inserted into the back of the last engine connecting rod. It can be seen that the use of the utility model connecting rod storage mechanism can further reduce the labor intensity of the operator and is conducive to improving the material preparation efficiency.

[0023] Obviously, the beneficial technical effect of the feeding device for grinding the end surface of the engine connecting rod of the utility model is that the engine connecting rod blank can be placed in the storage tank at one time, and then pushed to the grinding entrance by various mechanisms, which reduces labor intensity and improves production efficiency.

Claims

1. A feeding device for grinding the end surface of an engine connecting rod, characterized in that: The feeding device comprises a bottom plate, a feeding mechanism, a pushing mechanism, a feeding mechanism and a feeding guide groove; the bottom plate is a rectangular plate, and two or more storage grooves are arranged on the upper surface of the rectangular plate, and the cross-sectional shape of the storage groove is rectangular, and its width matches the length of the outer contour of the engine connecting rod, and its height matches the width of the outer contour of the engine connecting rod; a laterally extending support plate is arranged at the end of the bottom plate; the feeding mechanism is arranged on the step on the side of the storage groove, and comprises a rack, a guide rail, a gear, a feeding motor, a guide seat, a rotating arm and a feeding plate; the rack is arranged on the side of the storage groove The edge of the side step is the same as the length of the material storage trough; the guide rail is cylindrical and fixedly arranged obliquely above the rack; the gear is meshed with the rack, and the gear is fixedly connected to the output shaft of the feeding motor; the guide seat is a rectangular parallelepiped, a guide hole is provided in the middle of the rectangular parallelepiped guide seat, and it is sleeved on the guide rail through the guide hole; a feeding motor is fixedly connected to the lower part of the guide seat, and the feed motor shaft and the guide rail are perpendicular to each other; a rotating shaft is provided above the guide seat; the rotating arm is long and narrow, one end of which is provided with a circular through hole and is sleeved on the guide seat rotating shaft through the through hole, and the other end is provided with a A rectangular through hole is arranged; the feeding plate is a long strip with a rectangular cross section, which can be slidably inserted in the rectangular through hole of the rotating arm; the pushing mechanism is arranged at the end of the bottom plate storage tank, including a pushing guide groove, a pushing plate and a pushing cylinder; the cross-sectional shape of the pushing guide groove is a horizontal U-shape, and its U-shaped opening faces the bottom plate storage tank and is fixed at the end of the bottom plate, forming a rectangular channel with the end surface of the bottom plate, and the height and width of the rectangular channel respectively match the width and thickness of the outer contour of the engine connecting rod; the cross-sectional shape of the pushing plate matches the rectangular channel, and is inserted in the rectangular The push cylinder is fixed on the right side of the support plate at the end of the bottom plate, and the end of the piston is hinged to the end of the push plate; the feeding mechanism is arranged on the left side of the support plate at the end of the bottom plate, close to the outlet of the push guide groove, and includes a feeding motor, a pair of rollers, an upper support plate and a lower support plate; the feeding motor is fixedly installed above the upper support plate, and its output shaft passes through the upper support plate and is fixedly connected to the left roller in the pair of rollers; the pair of rollers is installed between the upper support plate and the lower support plate, and the distance between the left roller and the right roller is smaller than the thickness of the engine connecting rod; the lower support plate is fixed to the left side of the support plate at the end of the bottom plate; The feed guide groove is fixedly installed on the left side of the support plate at the end of the bottom plate, with one end close to the roller outlet of the feed mechanism and the other end close to the inlets of the two grinding surfaces of the grinding machine.

2. The feeding device for grinding the end surface of an engine connecting rod according to claim 1, characterized in that: The feeding device is also provided with a connecting rod storage mechanism, including a fixed handle, a through rod and a movable handle; the fixed handle has a rectangular outline, a lifting ear is provided on the upper part, and a fixed through hole is provided on the lower part; there are two fixed through holes, and their diameters are respectively the same as the large and small holes of the engine connecting rod, and the spacing between the two through holes is the same as the spacing between the large and small holes of the engine connecting rod; the through rod is a hollow round rod and there are two of them, and their diameters are respectively the same as the large and small holes of the engine connecting rod; one end of the through rod is respectively installed and fixed in the two through holes of the fixed handle, and the other end is respectively provided with a vertically upward pin hole, and the axis of the pin hole intersects the axis of the through rod at right angles; the movable handle is detachably installed on the other end of the through rod, and includes a base, a pin shaft seat, a spring and a fixed lifting ear; the base is rectangular, and its lower part is provided with two blind holes with the same diameters as the large and small holes of the engine connecting rod, and the spacing between the two blind holes is the same as the spacing between the large and small holes of the engine connecting rod; on the upper surface of the rectangular base A circular sliding column is respectively extended upwardly on both sides, and a pin shaft through hole is respectively provided at a position on the upper surface of the rectangular base facing the axis of the two lower blind holes, and the axis of the pin shaft through hole is perpendicular to the axis of the lower blind hole; the pin shaft seat is a long rectangular strip and is overlapped and placed directly above the base; a pin shaft is extended downwardly at a position on the lower end surface of the pin shaft seat facing the pin shaft through hole of the base, and the length of the pin shaft is based on the front end of the pin shaft being able to extend out of the base through hole wall after the pin shaft is inserted into the pin shaft through hole of the base; sliding holes matching the sliding columns of the base are provided on both sides of the pin shaft seat, and a pin shaft lifting ear is provided between the two sliding holes of the pin shaft seat; the two pin shafts of the pin shaft seat are respectively inserted into the pin shaft through holes of the base, and at the same time, the two sliding holes of the pin shaft seat are respectively mounted on the two sliding columns of the base; there are two springs, which are respectively mounted on the two sliding columns of the base and above the pin shaft seat; the fixed lifting ear is U-shaped and invertedly fixed above the two sliding columns of the base.

Images